A water supply and drainage control device

Abstract

The application discloses a kind of water supply and drainage control devices, including pressure-resistant barrier and fabric hose, hose entrance is sealedly connected with outlet passage;Pressure-resistant barrier is set to the outlet of outlet passage, is installed in outlet passage or the outlet of outlet passage;When the pressure in hose is less than the pressure outside hose, at least part of the inner wall of hose can be tightly adhered to each other under the action of pressure difference between inside and outside of hose and form static seal.The structure can utilize the pressure difference between inside and outside of hose to make the hose form static seal, thereby realizing outlet passage check, cutoff and other controls, ensuring the sealing shielding effect of product.At the same time, the structure can also be directly installed to the outlet of valve, drainage vehicle water pump, marine ballast water pump and the like, to realize the check, cutoff and other controls of valve, water pump, and the structure can also be combined with valve to effectively solve the problem that the sealing performance of existing valve is relatively low and medium leakage is easy to occur.In addition, the structure can also be used for river dredging or maintenance.

Description

Technical Field

[0001] This invention relates to the field of fluid machinery technology, specifically to a water supply and drainage control device. Background Technology

[0002] Valves are key components of fluid control systems, typically used in environments controlling liquid or gaseous fluids. Therefore, valves are widely applied in various industrial sectors where fluid control is designed. Currently, the main application areas for valves include: petroleum, natural gas, power, chemical, water and wastewater treatment, papermaking, metallurgy, pharmaceuticals, food, mining, non-ferrous metals, and electronics industries. Among these, the petroleum and natural gas, energy and power, and chemical sectors are the most important application areas for valves; however, the sealing performance of valves is the most crucial technical performance indicator.

[0003] Traditional valves are complex in structure, have long dimensions, occupy a large space, and cannot achieve static sealing, resulting in both internal and external leakage. Poor valve sealing performance will affect the valve's ability to cut off the medium, causing significant economic losses. In cases where the medium is toxic or corrosive, leaks can even endanger human lives due to the release of toxic or corrosive substances. Summary of the Invention

[0004] The purpose of this invention is to provide a water supply and drainage control device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the first aspect of the present invention provides a water supply and drainage control device, comprising:

[0006] A hose, the inlet of which is used for a sealed connection with the outlet channel, the hose being a hose lined with fabric;

[0007] A pressure-resistant blocking component is provided corresponding to the outlet of the water outlet channel. It is installed inside the water outlet channel or at the outlet of the water outlet channel, and the medium flowing out from the outlet of the water outlet channel can pass through the pressure-resistant blocking component and then flow out through the hose.

[0008] Wherein, when the pressure inside the hose is less than the pressure outside the hose, at least a portion of the inner wall of the hose can fit tightly together and form a static seal under the action of external atmospheric pressure and / or the pressure of the medium outside the hose.

[0009] The inlet portion of the hose is sealingly connected with the water outlet channel, and the remaining part of the hose is in a non-fixed state, that is, the remaining part of the hose is in a non-fixed natural state except that the inlet portion is sealingly connected with the water outlet channel directly or indirectly, that is, the tail portion of the hose is not fixed by an external object, so that the outside of the hose is communicated with the external environment of the whole device, so that the pressure near the outer side wall of the hose is consistent with the pressure of the whole environment. At the same time, it is also considered that the hose in the present application is a hose with fabric and cannot be expanded, that is, the hose cannot be expanded under pressure, so that the hose cannot rely on the expansion deformation of the hose itself for sealing, and when the pressure in the hose is less than the external environment pressure of the hose, the hose will retract to different degrees into the water outlet channel under the action of the internal and external pressure difference, so that the remaining part of the hose is in a non-fixed natural state, so that the hose can freely retract and move, and any position of the hose can be crushed to form a static seal. That is, in the present application, the hose is required to be a hose that cannot be expanded and can be crushed, so that the hose will not expand after being pressed, and the inner wall can also be pressed to adhere to each other, thereby forming a static seal.

[0010] In the above technical solution, preferably, the inlet of the hose is directly sealingly connected with the water outlet channel, and the pressure-resistant barrier is installed in the water outlet channel or at the outlet of the water outlet channel.

[0011] In another technical solution, preferably, the inlet of the hose is sealingly connected with the water outlet channel through a connecting pipeline, and the pressure-resistant barrier is installed in the water outlet channel or in the connecting pipeline, wherein when the pressure-resistant barrier is installed in the connecting pipeline, the pressure-resistant barrier and the connecting pipeline are in an integral structure or a split structure.

[0012] Further preferably, the edges of the pressure-resistant barrier are connected with the side wall of the water outlet channel or the side wall of the connecting pipeline, that is, when the pressure-resistant barrier is installed in the water outlet channel or the connecting pipeline, there is no gap between the pressure-resistant barrier and the inner wall of the water outlet channel or the connecting pipeline in the radial direction.

[0013] In another technical solution, preferably, part of the edges of the pressure-resistant barrier are connected with the side wall of the water outlet channel or the side wall of the connecting pipeline, and the other part of the edges of the pressure-resistant barrier are provided with a predetermined distance from the side wall of the water outlet channel or the side wall of the connecting pipeline, that is, the upper and lower sides or the left and right sides of the pressure-resistant barrier are not in complete contact with the inner wall of the water outlet channel or the connecting pipeline, but some gaps are provided, such as the pressure-resistant barrier is installed to about half the height of the water outlet channel or the connecting pipeline in the radial direction.

[0014] In any of the above technical solutions, preferably, the inlet of the hose is directly and sealingly connected with the water outlet channel, and a flange structure is arranged at the inlet of the hose, a connecting flange is arranged at the outlet of the water outlet channel, and the hose and the water outlet channel can be directly and sealingly connected through the flange structure and the connecting flange. In this structure, the flange structure is part of the hose, and the flange structure and the hose can be an integral structure or a split structure.

[0015] Preferably, the inlet of the hose is sealingly connected with the water outlet channel through a connecting pipeline, one end of the connecting pipeline is detachably and sealingly connected with the water outlet channel, and the hose is airtightly installed on the other end of the connecting pipeline. The connecting pipeline can be a connecting flange or the like structure.

[0016] Further preferably, when the pressure-resistant barrier is installed in the connecting pipeline, the pressure-resistant barrier and the connecting pipeline are welded into an integral structure, injection molded into an integral structure, or cast into an integral structure.

[0017] Further preferably, the connecting pipeline comprises an outer frame ring and an outer extension pipe, the outer extension pipe is connected with the outer frame ring in a stepped manner, the outer extension pipe is used for sealingly connecting with the hose, the outer frame ring is used for sealingly connecting with the water outlet channel, and the spacer rib is installed in the outer frame ring in a radial direction.

[0018] In any of the above technical solutions, preferably, the pressure-resistant barrier is installed in the water outlet channel in a radial direction of the water outlet channel or at the outlet of the water outlet channel, or the pressure-resistant barrier is arranged at a preset angle with respect to the axial direction of the water outlet channel, and the preset angle is greater than 0° and less than 90°.

[0019] In any of the above technical solutions, preferably, the connecting pipeline is a quick-change connector or a connecting flange.

[0020] In any of the above technical solutions, preferably, the pressure-resistant barrier is a protruding structure installed in the water outlet channel, for example, when this structure is used in a pump with a tongue, the pressure-resistant barrier can be directly a tongue arranged at the outlet of the pump. Or the protruding structure is a ring-shaped structure arranged on the inner wall of the water outlet channel in a circumferential direction of the water outlet channel.

[0021] In any of the above technical solutions, preferably, the water inlet and / or water outlet of the channel connected with the hose is circular or square.

[0022] Preferably, the hose and the pressure-resistant barrier can be assembled into an assembly.

[0023] Preferably, the pressure-resistant barrier is an integral structure.

[0024] Preferably, the pressure-resistant barrier is composed of one or more bars, preferably a horizontal bar, a cross bar or a vertical bar, which facilitates the installation of the pressure-resistant barrier into the hose or the connecting pipe. Of course, the pressure-resistant barrier in the present application can also be a structure comprising an outer ring and a bar, the two ends of the bar being installed on the outer ring, wherein the bar is used to separate the inner hole of the outer ring into multiple channels.

[0025] Preferably, the hose is a fabric-reinforced pressure-bearing hose and / or the hose is made of a gas-tight pressure-bearing soft material. Further, the hose is a fabric-reinforced, high and low temperature resistant, corrosion resistant, wear resistant and fireproof gas-tight pressure-bearing hose.

[0026] Preferably, the inlet and / or outlet of the channel connected to the hose is circular or square.

[0027] In any of the above technical solutions, preferably, the pressure-resistant barrier is welded into an integrated structure or the pressure-resistant barrier is injection molded into an integrated structure, or the pressure-resistant barrier is cast into an integrated structure.

[0028] The technical solution of the second aspect of the present application provides a water supply and drainage control device, comprising:

[0029] a water outlet channel;

[0030] a hose, the inlet of the hose being sealingly connected to the water outlet channel, the hose being a fabric-reinforced hose;

[0031] wherein when the pressure inside the hose is greater than the pressure outside the hose, the water outlet channel is in communication with the hose, and when the pressure inside the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly attached to each other under the action of the external atmospheric pressure and / or the pressure of the medium outside the hose and form a static seal.

[0032] Further preferably, the outlet of the water outlet channel is smaller than the inlet of the hose, i.e. the inner wall cross-sectional area of the outlet section of the water outlet channel is smaller than the inner wall cross-sectional area of the inlet of the hose, so that the hose can be blocked by the outlet section of the water outlet channel, thereby preventing the hose from shrinking. Specifically, for example, the outlet section of the water outlet channel can be designed to be gradually inwardly tapered, or the inlet and outlet of the water outlet channel can be designed as a stepped structure, and the inlet area of the water outlet channel is greater than the outlet area of the water outlet channel.

[0033] Further preferably, the water supply and drainage control device comprises a self-priming pump, and the water outlet channel is arranged on the self-priming pump, i.e. the hose with the fabric is directly connected to the outlet of the water outlet channel of the self-priming pump. In this structure, when the self-priming pump is priming, the pressure in the hose is less than the external pressure, and the hose can be adhered to form a static seal under the action of the external pressure. After the pump is normally working, the pressure in the hose is greater than the external pressure, and the hose is normally connected to the water outlet channel of the self-priming pump.

[0034] Of course, this structure can also be directly used for ship ballast pumps such as ships, at this time, the hose is directly connected to the outlet of the water outlet channel of the ship ballast pump.

[0035] The technical scheme of the third aspect of the present application provides a water supply and drainage control device, comprising:

[0036] A mounting channel is arranged for sealing connection with the water outlet channel;

[0037] A hose is arranged in the mounting channel, and an installation structure is arranged at the inlet of the hose, the installation structure is installed in the mounting channel or at the inlet of the mounting channel, and the hose is a hose with a fabric;

[0038] A pressure-resistant barrier is arranged at the inlet of the hose, and the medium entering from the inlet of the mounting channel can flow out of the hose after passing through the pressure-resistant barrier;

[0039] When the pressure in the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly adhered to each other and form a static seal under the action of the external atmospheric pressure and / or the pressure of the medium outside the hose.

[0040] Preferably, the inlet portion of the hose is fixed by the mounting structure, and the remaining part of the hose is in a non-fixed state, that is, the remaining part of the hose is in a non-fixed natural state except that the inlet is fixed by the mounting structure, and the tail of the hose is not fixed by an external object, so that the outside of the hose is communicated with the external environment of the entire device, so that the pressure near the outer wall of the hose is consistent with the pressure of the entire environment. At the same time, it is also considered that the hose in the present application is a hose with fabric and cannot be expanded, that is, the pressure-bearing hose cannot be expanded, so that the hose cannot rely on the expansion deformation of the hose itself for sealing, and when the pressure in the hose is less than the external environment pressure of the hose, the hose will retract to different degrees into the water outlet channel under the action of the internal and external pressure difference, so that the remaining part of the hose is in a non-fixed natural state, so that the hose can freely retract and move, and any position of the hose can be crushed to form a static seal. That is, in the present application, the hose is required to be a hose that cannot be expanded and can be crushed, so that the hose will not expand after being pressed, and the inner wall can also be pressed to adhere to each other, thereby forming a static seal.

[0041] In the above technical solution, preferably, a first connecting flange is arranged at the outlet of the water outlet channel, a second connecting flange matched with the first connecting flange is arranged at the inlet of the mounting channel, the mounting structure is a flange structure capable of being mounted at the inlet of the mounting channel, and the outer ring of the pressure-resistant barrier is mounted in a gas-tight manner between the flange structure and the first connecting flange.

[0042] In another scheme, the pressure-resistant barrier and the water outlet channel are connected in a detachable and gas-tight manner through a quick-change joint or a connecting flange, and the hose is mounted in a gas-tight manner on the pressure-resistant barrier.

[0043] In another scheme, the pressure-resistant barrier is mounted in the hose and arranged close to the inlet of the hose, or the pressure-resistant barrier is mounted in the water outlet channel, and at this time, the pressure-resistant barrier is preferably arranged in a structure composed of one or more grid bars without an outer ring. Of course, the pressure-resistant barrier can also be mounted in a sealed manner at the inlet of the hose to form a whole with the hose.

[0044] In the above technical solution, the hose and the water outlet channel can be directly connected in a sealed manner, or can be connected in a sealed manner through a connecting pipe, and when the hose and the water outlet channel are connected in a sealed manner through the connecting pipe, the pressure-resistant barrier is preferably integrated with the connecting pipe to realize the connection between the hose, the water outlet channel, the connecting pipe and the pressure-resistant barrier. Of course, the pressure-resistant barrier can also be welded or detachably mounted in the hose, the water outlet channel and the connecting pipe.

[0045] Preferably, the mounting channel is a hard pipe.

[0046] Preferably, the installation channel, the hose and the pressure-resistant barrier can be assembled into an assembly.

[0047] Preferably, the pressure-resistant barrier is of an integral structure.

[0048] Preferably, the pressure-resistant barrier is composed of one or more bars, preferably, the pressure-resistant barrier is a straight bar, a cross bar or a checkered bar, that is, the pressure-resistant barrier is of a structure without an outer ring, and such a structure facilitates the installation of the pressure-resistant barrier into the hose or the water outlet channel. Of course, when the pressure-resistant barrier needs to be installed between the hose and the water outlet channel, the pressure-resistant barrier can be provided as a structure including a tubular part and a bar part, the bar part being installed in the tubular part in the radial direction and separating the inside of the tubular part into multiple channels. Further preferably, the pressure-resistant barrier is composed of an outer ring and one or more bars installed in the outer ring.

[0049] Preferably, the hose is a fabric pressure-bearing hose and / or the hose is made of airtight pressure-bearing soft material such as fireproof cloth.

[0050] Further, the hose is a fabric pressure-bearing airtight hose that is resistant to high and low temperatures, corrosion, abrasion and fire.

[0051] Preferably, the water inlet and / or water outlet of the channel connected to the hose are circular or square, or the hose is of a tubular structure or a sheet structure.

[0052] In any of the above technical solutions, preferably, the pressure-resistant barrier is welded into an integral structure or the pressure-resistant barrier is injection molded into an integral structure, or the pressure-resistant barrier is cast into an integral structure.

[0053] Preferably, the pressure-resistant barrier includes an outer ring and a bar, the two ends of the bar being installed on the outer ring, wherein the bar is used to separate the internal channels of the outer ring. Further preferably, the pressure-resistant barrier includes an outer ring, an outer extension tube and a bar, the outer extension tube being provided on the inner wall of the outer ring and being used to connect the hose, and the bar being integrally installed on the outer ring.

[0054] In any of the above technical solutions, preferably, the pressure-resistant barrier is provided at a preset angle with respect to the axis direction of the water outlet channel, the preset angle being greater than 0° and less than or equal to 90°.

[0055] In any of the above technical solutions, preferably, the water outlet channel is provided on a valve or a water pump, when the water outlet channel is provided on the water pump, the water outlet channel is used to realize the drainage of the water pump, and when the water outlet channel is provided on the valve, the water outlet channel is a fluid channel of the valve.

[0056] The hose, the pressure-resistant barrier and the valve or the pump are integrally connected or detachably connected.

[0057] Preferably, the water pump herein can be a water pump of a water pump truck, or a ballast water pump of a ship, a warship or the like. That is, the structure of the pressure-resistant barrier and the hose in the application can be directly installed at a water outlet of the water pump of the water pump truck or in a water outlet pipeline, to prevent the water in the water outlet pipeline of the water pump from flowing back after the water pump truck pumps water. Meanwhile, the structure of the pressure-resistant barrier and the hose in the application can also be directly installed at a water outlet of the ballast water pump of the ship or in a water outlet pipeline, so that the water outlet pipeline of the ballast water pump can be shielded after the weight of the ship body is adjusted by pumping water, to prevent seawater from flowing back into the cabin. Since the pressure of seawater is very large, the hose is pressed very tightly, so that the water outlet pipeline of the ballast water pump is completely shielded, to achieve the shielding effect of no internal leakage and no external leakage. Thus, the sealing and shielding effect of the ballast water pump is completely ensured, the problem of water leakage in the bottom cabin caused by a valve of the ballast water pump of the ship or the warship not being tightly closed is avoided, and the fault maintenance caused by water leakage in the bottom cabin and the social security risk caused by water leakage in the bottom cabin are also avoided. Meanwhile, the pressure-resistant barrier and the hose can be installed outside the ship body or slightly retracted from the outside to the inside of the ship body, so that the space in the ship body is basically not occupied, to solve the problem of insufficient space in the ship body for installing a large sealing and shielding system.

[0058] Of course, the structure of the water outlet channel combined with the hose can also be directly used for the water pump of the water pump truck or the ballast water pump of the ship or the warship. That is, when the hose is formed into a static seal by the pressure outside the hose, whether the pressure-resistant barrier is used can be determined according to the pressure outside the hose. Specifically, when the pressure outside the hose is large, the pressure-resistant barrier can be provided to prevent the hose from retracting. When the pressure outside the hose is not large or the hose itself has a strong pressure resistance, the pressure-resistant barrier can not be provided, and a hose with fabric can be directly connected at the water outlet channel.

[0059] The technical scheme of the fourth aspect of the application provides a water supply and drainage control device, which comprises:

[0060] A valve, which comprises a housing assembly and an opening and closing assembly, the housing assembly is provided with a fluid channel, and the opening and closing assembly is movably installed in the fluid channel.

[0061] A pressure-resistant barrier is arranged in the fluid channel and is arranged close to the inlet of the fluid channel, and at least one water passage is arranged on the pressure-resistant barrier and / or at least one water passage is formed between the pressure-resistant barrier and the inner wall of the fluid channel;

[0062] A hose is arranged in the fluid channel and is sealingly connected to the pressure-resistant barrier, and all water passages are sealingly communicated with the hose, and the medium entering from the inlet of the fluid channel can flow out from the hose after passing through the at least one water passage, and the hose is a hose with fabric.

[0063] The opening and closing assembly can be used to extrude the hose and make the inner walls of the hose tightly adhere to each other and form a static seal, and the opening and closing assembly is also used to loosen the hose so that the hose can be opened, and when the pressure in the hose is less than the pressure outside the hose, at least part of the inner walls of the hose can tightly adhere to each other under the action of the external atmospheric pressure and / or the medium pressure outside the hose and form a static seal.

[0064] Further preferably, part of the hose is sealingly connected to the pressure-resistant barrier, and the remaining part of the hose is in a non-fixed state. That is, in addition to the part fixed to the pressure-resistant barrier, the remaining part of the hose is in a non-fixed natural state, that is, the tail of the hose is not fixed by an external object, so that the outside of the hose is communicated with the external environment of the entire device, so that the pressure near the outer wall of the hose is consistent with the pressure of the entire environment. At the same time, it is also considered that the hose in the present application is a hose with fabric and cannot be expanded, that is, the hose cannot be expanded under pressure, so that the hose cannot rely on its own expansion and deformation for sealing, and when the pressure in the hose is less than the pressure outside the hose, the hose will retract to different degrees into the water outlet channel under the action of the pressure difference between the inside and outside, so that the remaining part of the hose is in a non-fixed natural state, so that the hose can freely retract and move, and any position of the hose can be flattened to form a static seal. That is, in the present application, the hose is required to be a hose that cannot be expanded and can be flattened, so that the hose will not expand after being pressed, and its inner walls can also be pressed to adhere to each other, thereby forming a static seal.

[0065] Preferably, the pressure-resistant barrier is arranged at a preset angle with respect to the axis direction of the fluid channel, and the preset angle is greater than 0° and less than or equal to 90°, and the pressure-resistant barrier is preferably a pressure-resistant barrier.

[0066] In one specific embodiment of the valve, the housing assembly comprises a valve seat and a valve cover, the fluid passage is arranged on the valve seat, and a switching passage communicating with the fluid passage is also arranged on the valve seat, the valve cover is arranged at one end of the switching passage away from the fluid passage, the valve further comprises a valve rod and an actuator, one end of the valve rod is located outside the valve cover and connected with the actuator, the other end of the valve rod penetrates through the valve cover and is telescopically arranged in the fluid passage by the switching passage, the switching assembly is connected with the other end of the valve rod and can reciprocate along the axial direction of the switching passage when the valve rod is telescopically extended or retracted, so as to squeeze or loosen the hose, and the actuator is used to control the extension and retraction of the valve rod.

[0067] The switching assembly is a sliding assembly capable of reciprocating along the axial direction of the switching passage in the fluid passage, the sliding assembly comprises a sliding frame and a roller, one end of the sliding frame is connected with the end of the valve rod penetrating into the fluid passage, and the roller is arranged at the end of the sliding frame away from the valve rod, the sliding assembly can squeeze the hose by the roller and make the inner walls of the hose tightly adhere to each other to form a static seal.

[0068] A rod static seal device is arranged on the valve rod and located in the valve seat, a through hole for arranging the valve rod is arranged on the valve cover, the rod static seal device can seal the end of the through hole close to the valve seat to prevent the medium from leaking outwards from the valve seat through the through hole, the material of the rod static seal device is the same as that of the hose, and the rod static seal device is a telescopic bellows structure.

[0069] In another specific embodiment of the valve, the housing assembly comprises a valve seat and a valve cover, the fluid passage is arranged on the valve seat, and a switching passage communicating with the fluid passage is also arranged on the valve seat, the valve cover is arranged at one end of the switching passage away from the fluid passage, the valve further comprises a valve rod and an actuator, one end of the valve rod is located outside the valve cover and connected with the actuator, the other end of the valve rod penetrates through the valve cover and is telescopically arranged in the fluid passage by the switching passage, the switching assembly is connected with the other end of the valve rod and can reciprocate along the axial direction of the switching passage when the valve rod is telescopically extended or retracted, so as to squeeze or loosen the hose, and the actuator is used to control the extension and retraction of the valve rod.

[0070] The opening and closing assembly is a gate assembly capable of sliding back and forth in the fluid channel along the axial direction of the opening and closing channel, the gate assembly comprises a gate and a wear-resistant hard rubber layer, one end of the gate is connected with the end of the valve rod extending into the fluid channel, the other end of the gate is semicircular, and the wear-resistant hard rubber layer is arranged on the outer surface of the gate close to the hose. The gate assembly can extrude the hose and make the inner walls of the hose tightly close to each other to form a static seal by reciprocating motion, and the gate assembly can also loosen the hose by reciprocating motion.

[0071] The valve rod is provided with a rod static sealing device located in the valve seat, the valve cover is provided with a through hole for mounting the valve rod, the rod static sealing device can seal the end of the through hole close to the valve seat to prevent medium from leaking out from the through hole in the valve seat, the material of the rod static sealing device is the same as that of the hose, and the rod static sealing device is a telescopic bellows structure.

[0072] In a specific scheme of the third valve, the pressure-resistant barrier is a tubular structure with one end open and the other end gradually inwardly recessed in an arc shape; the inlet end of the hose is sleeved and mounted on the end of the pressure-resistant barrier away from the inlet of the fluid channel, and the inside of the outlet end of the hose is provided with a metal strip or a reinforcing fabric spacer;

[0073] The housing assembly is composed of a valve seat and a valve cover, the fluid channel is arranged on the valve seat, the valve seat is further provided with an opening and closing channel communicating with the fluid channel, the valve cover is arranged at the end of the opening and closing channel away from the fluid channel, the valve further comprises an actuator and two valve rods, one end of the two valve rods is located outside the valve cover and connected with the actuator, the other end of the two valve rods penetrates through the valve cover and extends into the fluid channel through the opening and closing channel, and valve flaps are arranged on the ends of the two valve rods extending into the fluid channel. The two valve flaps can rotate in two directions under the action of the two valve rods, and when the two valve flaps rotate forward, they can extrude the hose from both sides of the hose to the center of the hose to make the inner walls of the hose tightly close to each other to form a static seal, and when the two valve flaps rotate reversely, they can loosen the hose to make the hose open;

[0074] The valve further comprises a rack and two gears, the two gears are respectively engaged with the two sides of the rack, the rack is connected with the actuator and can slide under the action of the actuator, and one end of the two valve rods extending out of the valve cover is connected to one of the gears;

[0075] The valve stem is provided with a stem static sealing device, which is located in the valve seat, the valve cover is provided with a through hole for installing the valve stem, the stem static sealing device can seal one end of the through hole close to the valve seat to prevent the medium from leaking out from the through hole in the valve seat, the material of the stem static sealing device is the same as that of the hose, and the stem static sealing device is a telescopic bellows structure.

[0076] In a specific scheme of the water supply and drainage control device provided in the fourth aspect, the pressure-resistant barrier and the hose are connected into an integrated duckbill valve structure in the fluid channel, and an inlet of the integrated duckbill valve structure is arranged close to an inlet of the fluid channel, and an outlet of the integrated duckbill valve structure is arranged close to an outlet of the fluid channel.

[0077] The housing assembly is composed of a valve seat and a valve cover, the fluid channel is arranged on the valve seat, the valve seat is further provided with an opening and closing channel in communication with the fluid channel, the valve cover is arranged at one end of the opening and closing channel away from the fluid channel, the valve further comprises an actuator and two valve stems, one end of the two valve stems is located outside the valve cover and connected with the actuator, the other end of the two valve stems penetrates through the valve cover and extends into the fluid channel through the opening and closing channel, and valve flaps are arranged on the ends of the two valve stems extending into the fluid channel, the two valve flaps can rotate in two directions under the action of the two valve stems, when the two valve flaps rotate in the forward direction, they can extrude the integrated duckbill valve structure from both sides of the integrated duckbill valve structure to the center of the integrated duckbill valve structure, so that the integrated duckbill valve structure is sealed, and when the two valve flaps rotate in the reverse direction, they can loosen the integrated duckbill valve structure, so that the integrated duckbill valve structure can be opened under the pressure at the inlet of the fluid channel.

[0078] Further preferably, the valve further comprises a rack and two gears, the two gears are respectively engaged with two sides of the rack, the rack is connected with the actuator and can slide under the action of the actuator, and one end of each of the two valve stems extending out of the valve cover is connected to one of the gears.

[0079] Further preferably, the valve stem is provided with a stem static sealing device, which is located in the valve seat, the valve cover is provided with a through hole for installing the valve stem, the stem static sealing device can seal one end of the through hole close to the valve seat to prevent the medium from leaking out from the through hole in the valve seat, the material of the stem static sealing device is the same as that of the hose, and the stem static sealing device is a telescopic bellows structure.

[0080] In any of the technical solutions provided in the fourth aspect of the present application, preferably, the opening size of the fluid passage can be adjusted by the opening and closing component, and / or the opening and closing of the fluid passage can be controlled by the opening and closing component, that is, when the opening and closing component is closed, the inner wall of the valve seat and the opening and closing component are tightly fitted without leaving a gap, so that the opening and closing component is not only a structure for pressing or releasing the hose, but also can realize the normal opening and closing of the valve, and the function of the hose is only to further ensure that the opening and closing component does not leak after being closed. Of course, in other solutions, the opening and closing component can also not be used to realize the normal opening and closing of the valve, but only be a structure for pressing or releasing the hose.

[0081] The technical solution of the fifth aspect of the present application provides a water supply and drainage control device, which comprises:

[0082] a valve, the valve comprising a housing assembly and an opening and closing component, the housing assembly being provided with a fluid passage, and the opening and closing component being movably installed in the fluid passage and used for adjusting the opening size of the fluid passage and / or controlling the opening and closing of the fluid passage;

[0083] a pressure-resistant barrier installed in the fluid passage, the pressure-resistant barrier being provided with at least one water passage or the pressure-resistant barrier and the inner wall of the fluid passage forming at least one water passage, the pressure-resistant barrier being arranged close to the inlet of the fluid passage in the fluid passage, and the opening and closing component being arranged on the outlet side of the pressure-resistant barrier, or the pressure-resistant barrier being arranged close to the outlet of the fluid passage in the fluid passage, and the opening and closing component being arranged on the inlet side of the pressure-resistant barrier;

[0084] a hose located in the fluid passage, on the outlet side of the pressure-resistant barrier, and in sealing connection with the pressure-resistant barrier, the hose being a hose with fabric, and all the water passages being in sealing communication with the inside of the hose, so that the medium entering from the inlet of the fluid passage can flow out through the hose after passing through the at least one water passage;

[0085] wherein when the pressure in the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly fitted and form a static seal under the action of the external atmospheric pressure and / or the medium pressure outside the hose, and the opening and closing component can press the hose and make the inner wall of the hose tightly fitted and form a static seal when the fluid passage is disconnected.

[0086] Further preferably, part of the hose is in sealing connection with the pressure-resistant barrier, and the remaining part of the hose is in a non-fixed state.

[0087] In a specific solution, the housing assembly comprises a valve seat and a valve cover, the fluid passage is arranged on the valve seat, and a start-stop passage in communication with the fluid passage is further arranged on the valve seat, the valve cover is arranged at one end of the start-stop passage away from the fluid passage, the valve further comprises a valve rod and an actuator, one end of the valve rod is located outside the valve cover and connected with the actuator, the other end of the valve rod penetrates through the valve cover and extends into the fluid passage through the start-stop passage, the start-stop assembly is a butterfly plate rotatably arranged in the fluid passage and connected with the valve rod, the valve rod can rotate relative to the valve seat and drive the butterfly plate to rotate, and the butterfly plate can adjust the opening size of the fluid passage and / or control the on-off of the fluid passage when rotating, and the butterfly plate can also extrude the hose and make the inner walls of the hose tightly adhere to each other and form a static seal when the fluid passage is disconnected.

[0088] The valve rod is provided with a rod static sealing device located in the valve seat, and the valve cover is provided with a through hole for mounting the valve rod, the rod static sealing device is used for sealing one end of the through hole close to the valve seat to prevent medium from leaking outwards from the through hole in the valve seat, the material of the rod static sealing device is the same as that of the hose, and the rod static sealing device is a telescopic bellows structure.

[0089] The sixth aspect of the technical solution of the present application provides a water supply and drainage control device, which comprises:

[0090] A valve, the valve comprises a housing assembly and a start-stop assembly, the housing assembly is provided with a fluid passage, and the start-stop assembly is slidably arranged in the fluid passage along the radial direction of the fluid passage and used for adjusting the opening size of the fluid passage and / or controlling the on-off of the fluid passage.

[0091] A pressure-resistant barrier is arranged in the fluid passage and located between the start-stop assembly and the inlet of the fluid passage or between the start-stop assembly and the outlet of the fluid passage, the outer ring of the pressure-resistant barrier is in sealing connection with the inner wall of the fluid passage, and at least one water passage is arranged on the pressure-resistant barrier and / or formed between the pressure-resistant barrier and the inner wall of the fluid passage.

[0092] The gas-tight pressure-bearing soft cloth is arranged on one side of the start-stop assembly close to the pressure-resistant barrier, the gas-tight pressure-bearing soft cloth can seal and wrap the periphery of the pressure-resistant barrier under the pressure of the medium in the fluid passage when the start-stop assembly disconnects the fluid passage, so as to realize the sealing of the pressure-resistant barrier by the gas-tight pressure-bearing soft cloth.

[0093] In one specific embodiment, the housing assembly comprises a valve seat and a valve cover, the fluid passage is arranged on the valve seat, and a valve opening and closing passage is arranged on the valve seat and communicates with the fluid passage, the valve cover is arranged at one end of the valve opening and closing passage away from the fluid passage, the valve further comprises a valve stem and an actuator, one end of the valve stem is located outside the valve cover and connected with the actuator, the other end of the valve stem penetrates through the valve cover and is telescopically arranged in the fluid passage through the valve opening and closing passage, the opening and closing assembly is connected with the other end of the valve stem and can reciprocate along the axial direction of the valve opening and closing passage when the valve stem is telescopically extended or retracted, so as to adjust the opening size of the fluid passage and / or control the on-off of the fluid passage, and the actuator is used to control the extension and retraction of the valve stem.

[0094] The opening and closing assembly comprises a frame assembly connected with the end of the valve stem extending into the fluid passage, an inner telescopic rod, and the air-tight pressure-bearing soft cloth, the air-tight pressure-bearing soft cloth is sealed and covered on one side of the frame assembly close to the pressure-resistant barrier, the frame assembly comprises a frame and a pre-release pressure rod, one end of the frame is connected with the valve stem, and the other end of the frame is open, the pre-release pressure rod is arranged at the opening of the other end of the frame and connected with the inner telescopic rod, and the pre-release pressure rod can pull the air-tight pressure-bearing soft cloth close to the valve opening and closing passage under the action of the inner telescopic rod.

[0095] When the actuator drives the opening and closing assembly to slide close to the bottom side wall of the fluid passage, the air-tight pressure-bearing soft cloth can be sealed and wrapped around the periphery of the pressure-resistant barrier under the action of the medium pressure in the fluid passage, so as to realize the sealing of the air-tight pressure-bearing soft cloth to the pressure-resistant barrier, in the process of opening the fluid passage by the actuator driving the opening and closing assembly, the valve stem first pulls the air-tight pressure-bearing soft cloth close to the valve opening and closing passage through the inner telescopic rod and the pre-release pressure rod under the action of the actuator, after the air-tight pressure-bearing soft cloth is pulled to a preset height, the fluid passage is depressurized through the outlet of the fluid passage, and after the fluid passage is depressurized for a preset time, the valve stem gradually lifts the air-tight pressure-bearing soft cloth through the frame assembly under the action of the actuator, and gradually opens the fluid passage.

[0096] In any of the above technical solutions, preferably, the actuator drives the valve stem to extend or retract through a T-shaped threaded pair.

[0097] Preferably, a stem static sealing device is arranged on the valve stem, the stem static sealing device is mounted in the valve seat, a through hole for mounting the valve stem is arranged on the valve cover, the stem static sealing device can seal one end of the through hole close to the valve seat to prevent the medium from leaking out of the valve seat through the through hole, the stem static sealing device is made of the same material as the air-tight pressure-bearing soft cloth, and the stem static sealing device is a telescopic bellows structure.

[0098] Preferably, the air-tight pressure-bearing soft cloth is made of air-tight fabric material.

[0099] Preferably, the bottom edge of the air-tight pressure-bearing soft cloth covers the pre-release pressure rod, the remaining edges of the air-tight pressure-bearing soft cloth cover the frame, and the middle part of the air-tight pressure-bearing soft cloth is in a non-tensioned state, or the bottom edge of the air-tight pressure-bearing soft cloth covers the pre-release pressure rod, the upper edge of the air-tight pressure-bearing soft cloth covers the frame, and after the air-tight pressure-bearing soft cloth is pulled to a preset height, the pre-release pressure rod can also drive the lower edge of the air-tight pressure-bearing soft cloth to move upward relative to the frame and form a wrinkle under the action of the inner telescopic rod, and the middle part of the air-tight pressure-bearing soft cloth is in a non-tensioned state.

[0100] Preferably, the pre-release pressure rod is one, or the pre-release pressure rod includes two segmented rods connected to each other.

[0101] The pre-release pressure rod is an elastic rod, and the pre-release pressure rod can be deformed in a direction close to the opening and closing channel under the action of the inner telescopic rod to realize the pulling of the air-tight pressure-bearing soft cloth.

[0102] Preferably, the pre-release pressure rod is a carbon fiber rod or a non-carbon fiber rod.

[0103] The seventh aspect of the present application provides a water supply and drainage control device, which comprises:

[0104] A pressure-resistant barrier is sealingly mounted in the intercepting dam and arranged close to the inlet of the intercepting dam.

[0105] A hose is air-tightly mounted on one end of the pressure-resistant barrier close to the outlet of the intercepting dam, or the hose is directly air-tightly mounted at the outlet of the intercepting dam, and the other end of the hose extends out of the outlet of the intercepting dam by a preset distance, the hose is a hose with fabric, and at least part of the inner wall of the hose can be tightly attached to each other and form a static seal under the action of the medium pressure outside the hose when the pressure inside the hose is less than the pressure outside the hose.

[0106] The intercepting device is installed at the entrance of the intercepting dam, and comprises a housing assembly, an opening and closing assembly installed on the housing assembly, and an actuator connected with the opening and closing assembly. The opening and closing assembly is slidably installed at the entrance of the intercepting dam in the up-down direction to adjust the opening size of the entrance of the intercepting dam and / or control the opening and closing of the entrance of the intercepting dam. The actuator is used to drive the opening and closing assembly to slide up and down, so that the opening and closing assembly can adjust the opening size of the entrance of the intercepting dam and / or control the opening and closing of the entrance of the intercepting dam.

[0107] The opening and closing assembly is provided with an air-tight pressure-bearing soft cloth on the side close to the pressure-resistant barrier. The air-tight pressure-bearing soft cloth can seal and wrap around the periphery of the pressure-resistant barrier under the action of the medium pressure in the intercepting dam when the opening and closing assembly closes the entrance of the intercepting dam, so as to realize the sealing of the pressure-resistant barrier by the air-tight pressure-bearing soft cloth.

[0108] The opening and closing assembly comprises a movable rod installed in the housing assembly and connected with the actuator. The other end of the movable rod is telescopically installed at the entrance of the intercepting dam. The opening and closing assembly further comprises a frame assembly connected with the end of the movable rod extending into the entrance of the intercepting dam, an inner telescopic rod, and the air-tight pressure-bearing soft cloth. The air-tight pressure-bearing soft cloth is sealed and covered on the side of the frame assembly close to the pressure-resistant barrier. The frame assembly comprises a frame and a pre-release pressure rod. The upper end of the frame is connected with the movable rod, and the lower end of the frame is open. The pre-release pressure rod is installed at the opening of the lower end of the frame and connected with the inner telescopic rod. The pre-release pressure rod can lift the air-tight pressure-bearing soft cloth upward under the action of the inner telescopic rod.

[0109] When the actuator drives the opening and closing assembly to slide downward and close the entrance of the intercepting dam, the air-tight pressure-bearing soft cloth can seal and wrap around the periphery of the pressure-resistant barrier under the action of the medium pressure in the intercepting dam, so as to realize the sealing of the pressure-resistant barrier by the air-tight pressure-bearing soft cloth. During the process that the actuator drives the opening and closing assembly to open the entrance of the intercepting dam, the movable rod first lifts the air-tight pressure-bearing soft cloth upward through the inner telescopic rod and the pre-release pressure rod under the action of the actuator. After the air-tight pressure-bearing soft cloth is lifted to a preset height, the intercepting dam is depressurized through the outlet of the intercepting dam. After a preset time of depressurization, the movable rod gradually lifts the air-tight pressure-bearing soft cloth through the frame assembly under the action of the actuator, and the entrance of the intercepting dam is opened.

[0110] Further preferably, part of the soft tube is air-tightly installed on the pressure-resistant barrier, and the remaining part of the soft tube is in a non-fixed state.

[0111] In any of the above technical solutions, the circulating medium can be one or more of a liquid, a gas, and a granular substance such as rice.

[0112] In any of the above embodiments, the inlet portion of the hose is fixed, and the remaining portion of the hose is in a non-fixed state, that is, the remaining portion of the hose is in a non-fixed natural state in addition to the fixed inlet, that is, the tail portion of the hose is not fixed by an external object, so that the outside of the hose communicates with the external environment of the entire device, so that the pressure near the outer side wall of the hose is consistent with the pressure of the entire external environment. That is, the hose cannot form a closed cavity structure with other objects, so that the outer side of the hose is basically exposed to the environment in which the hose is located, so that the pressure outside the hose is the pressure of the environment in which the hose is located. At the same time, it is also considered that the hose in the present application is a hose with fabric and cannot be inflated, that is, the hose cannot be expanded under pressure, so the present application cannot rely on the inflation deformation of the hose itself to seal, therefore, in the present application, the hose is simply sealed by two pieces of fabric. When the two pieces of fabric are attached together, both pieces of fabric do not expand and deform, and because the inner wall of the hose does not expand and deform, the inner wall of the hose can form a static seal when it is attached. When the internal pressure of the hose is less than the external environment pressure of the hose, the hose will retract to varying degrees into the water outlet channel under the action of the internal and external pressure difference, so that the remaining portion of the hose is in a non-fixed natural state, so that the hose can freely retract and move, and any position of the hose can be flattened to form a static seal. That is, the hose in the present application is a hose that cannot be inflated and can be flattened, so that the hose does not expand after being pressed, and the inner wall of the hose can also be attached without expanding and deforming under pressure, thereby forming a static seal.

[0113] In any of the above embodiments, the hose is a hose with fabric, that is, a non-inflatable hose, such as a non-elastic hose. That is, a pipe that can withstand a certain pressure and will not expand, such as a soft cloth pipe. The hose can withstand a certain pressure and will not expand, that is, the hose in the present application cannot expand and deform under the action of the internal and external pressure difference, it can only be flattened under the action of the internal and external pressure difference, so that the inner wall of the hose is tightly attached to form a static seal. That is, the inner wall of the hose in the present application is tightly sealed by the external environment pressure, rather than relying on the elastic deformation of the hose to achieve sealing. That is, the hose in the present application is essentially squeezed by the external environment pressure when the external environment pressure is greater than the internal pressure of the hose, so that the inner wall of the hose is attached together, and the inner wall of the hose does not deform and expand during the attachment of the inner wall of the hose. This makes the attachment between the inner walls of the hose belong to the sealing attachment between two non-inflatable surfaces, and thus belongs to a true static seal.

[0114] In any of the above technical solutions, the pressure outside the hose refers to the pressure of the environment in which the hose is located. For example, when the hose is installed in air, the pressure outside the hose is the atmospheric pressure. When the hose is installed in liquid such as river water or sea water, the pressure outside the hose is the pressure of the liquid such as river water or sea water outside the hose. When the hose is installed in a valve passage, the pressure outside the hose is the pressure of the medium in the valve passage.

[0115] According to the above-mentioned technical solutions of the present application, the water supply and drainage control device at least comprises a hose or a hose and a pressure-resistant blocking piece, and in specific use, the hose or the hose and the pressure-resistant blocking piece can be installed at the outlet of a medium channel. According to the flow principle of water, air and other media, when the pressure at the inlet side of the water outlet channel increases, for example, when a water pump at the inlet side of the water outlet channel is started, the hose is naturally expanded under the pressure, the pipeline inside the whole channel is unobstructed, and the medium flows. When the pressure at the water outlet channel decreases or forms a negative pressure, for example, after the water, air and other media in the water outlet channel stop flowing, the pressure in the channel connected with the water outlet channel and the hose is less than the pressure outside the hose (i.e. the pressure of the environment outside the hose, i.e. the pressure of the environment where the hose is located), so that part or even the whole hose is compressed under the pressure outside the hose, i.e. under the pressure difference between the inside and outside of the hose, so that the inner wall of the hose near the pressure-resistant blocking piece can be tightly attached to each other and form a static seal under the action of the external atmospheric pressure and / or the medium pressure outside the hose, thereby blocking the medium from flowing in or out. This sealing method can realize self-sealing of the hose through the pressure difference between the inside and outside of the hose. When the hose is attached under pressure, it will not expand and deform, so it belongs to the sealing attachment between two static surfaces, which realizes a true static seal, has very good sealing effect and strong medium blocking capacity, and thus realizes true sealing shielding and zero leakage. In this way, the sealing performance of the product and the medium blocking capacity can be ensured, and the phenomena of gas, liquid and other leakage caused by poor sealing performance can be avoided, thereby avoiding economic losses caused by gas, liquid and other leakage, and avoiding the impact on people's life safety caused by the volatilization of toxic or corrosive substances due to leakage when the medium is toxic or corrosive. At the same time, this sealing method can form a long sealing section on the hose by irregularly pressing the hose from multiple directions using the pressure outside the hose, thereby ensuring the sealing effect. In addition, the larger the pressure difference between the inside and outside of the hose, the better the sealing effect, which solves the problem that the larger the pressure difference between the inside and outside of the existing scheme, the worse the shielding effect. This structure can directly replace the original medium conveying pipe with the hose to realize medium conveying through the hose, and can also directly install the hose in the original medium conveying pipe. Both of these two ways will not change the volume and structure of the original structure too much, and the volume of this structure is very small, the structure is very simple, and the cost is relatively low, so high-efficiency sealing and shielding can be realized at low cost and small volume, which solves the technical problems of high cost, large volume and complex structure of the existing sealing and shielding structure.

[0116] Wherein, in this application, the pressure-resistant barrier mainly provides resistance or bearing for the hose, so that when the hose is extruded by external atmospheric pressure or external liquid medium pressure, the hose can be blocked and prevented from being extruded and retracted into the water outlet channel, so that when the hose is extruded by external atmospheric pressure or external liquid medium pressure, it can be compressed and stacked on the pressure-resistant barrier without being directly sucked into the water outlet channel. When the external pressure is not particularly large, the pressure-resistant barrier can also not be set, and when the pressure-bearing capacity of the hose is sufficient or the structure of the water outlet channel is special so that the hose cannot retract into the water outlet channel, the pressure-resistant barrier can also not be set. At this time, the basis of this application only includes the water outlet channel and the hose.

[0117] Wherein, when the hose is long enough, such as a drain pipe of a water pump, if the water pump is started for the first time and vacuumized, the internal wall of the hose will be crushed to form a static seal under the action of external atmospheric pressure, and at the same time, the hose will be extruded and retracted by external pressure due to the negative pressure inside the hose. At this time, the pressure-resistant barrier can intercept the hose to prevent it from being sucked into the water outlet channel due to negative pressure, so that the hose can be partially retracted and stacked on the pressure-resistant barrier while forming a static seal. However, if the water pump is paused after pumping and restarted, if the hose is long enough and the tail of the hose is full of medium, at this time, the part of the hose close to the pressure-resistant barrier has no medium and can still be extruded and crushed under the action of the internal and external pressure difference, so that the internal wall of the hose is tightly fitted to form a self-seal. However, at this time, due to the gravity of the water or other medium inside the hose, the tail of the hose is dragged, so that when the internal wall of the hose is crushed to form a static seal under the action of external atmospheric pressure, the hose will still be extruded and retracted by external pressure, but the retraction length is much smaller than that when the water pump is started for the first time.

[0118] Wherein, the water outlet channel is used for the flow of water, air and other media, the pressure-resistant barrier and the hose are preferably air-tight connected, the hose is preferably in the form of a layer, and an air-tight hose with fabric, high and low temperature resistance, corrosion resistance, wear resistance, bending resistance and pressure resistance is selected. At the same time, the hose is preferably a pipe that can be fitted or separated with the internal wall under the influence of external medium, and the length of the hose can be determined according to the size of the medium flow. The pressure-resistant barrier can be set as a straight type, a cross type or a cross type.

[0119] The basic structure of the hose and the pressure-resistant barrier or the structure of the single hose can be used alone at the outlet of the water outlet channel to open or close the water outlet channel. Meanwhile, the basic structure of the hose and the pressure-resistant barrier or the structure of the single hose can be combined with the part with the mounting channel to protect the pressure-resistant barrier and the hose by using the mounting channel of other parts and to expand the application scenarios of the basic structure. Specifically, the basic structure of the hose and the pressure-resistant barrier or the structure of the single hose can be directly mounted in the mounting channel of other parts, such as a pipe or a valve. Of course, when the basic structure of the hose and the pressure-resistant barrier or the structure of the single hose is combined with the part with the mounting channel, the mounting mode of the hose and the pressure-resistant barrier can be flexibly mounted according to actual needs, such as being mounted at the inlet of the mounting channel or at the connection between the water outlet channel and the mounting channel.

[0120] Further, the basic structure one of the hose and the pressure-resistant barrier or the basic structure two of the hose, the pressure-resistant barrier and the part with the mounting channel or the structure of the single hose can be applied to the drain vehicle. Specifically, the basic structure one or the basic structure two or the structure of the single hose can be directly connected with the water outlet of the water pump of the drain vehicle to control the outlet of the water pump of the drain vehicle by the structure of the hose and the pressure-resistant barrier or the structure of the single hose.

[0121] To form a static seal by tightly adhering the inner walls of the hose to each other, the hose needs to meet certain length requirements. When the structure of the hose, the pressure-resistant barrier or the structure of the single hose is applied to the drain vehicle, the length of the hose can be designed according to the sealing needs of the hose. In this case, the hose, the pressure-resistant barrier and the hard pipe with the mounting channel can be combined into a basic structure and then mounted between the pump outlet of the water pump and the drain pipe of the water pump of the drain vehicle. Alternatively, the length of the hose can be designed according to the length requirements of the drain pipe of the water pump instead of the sealing needs of the hose, so that the hose can be long enough to be directly used as the drain pipe of the water pump. In this way, the drain pipe of the water pump, the pressure-resistant barrier and the basic structure of the hose can be combined together.

[0122] Meanwhile, the basic structure one composed of the hose and the pressure-resistant barrier or the basic structure two composed of the hose, the pressure-resistant barrier and the part with the installation channel of the belt or the structure of the single hose can be directly combined with the valve, for example, the basic structure one or the basic structure two or the structure of the single hose can be directly installed at the outlet of a valve. On the other hand, the basic structure one composed of the hose and the pressure-resistant barrier or the structure of the single hose can be directly installed into the fluid channel of the valve, so as to form a combined valve structure. The combined valve structure can be used as a regulating valve, a shut-off valve or a check valve, and the combined valve structure has the shielding and no-leakage features, so as to effectively solve the problem of low valve sealing performance and easy medium leakage in the prior art. In the combined valve structure, the pressure-resistant barrier and the hose can be preferentially arranged at the inlet of the valve, and the opening and closing assembly in the valve can be further used to drive the deformation of the hose, so that the hose can form a static seal by means of the extrusion of the opening and closing assembly in the valve in addition to the pressure difference between the inside and outside of the hose, so as to increase the close-fitting force of the inner wall of the hose and increase the sealing effect of the hose in the static seal, thereby improving the medium cutting capacity of the water supply and drainage control device. Of course, on the other hand, the opening and closing assembly in the valve and the hose can be arranged in a separate structure, so that the basic structure composed of the hose and the pressure-resistant barrier and the opening and closing assembly can independently work.

[0123] In addition, in the present application, the hose, the pressure-resistant barrier and the valve can be combined and applied to the intercepting dam, so as to realize the opening and closing of the intercepting dam and the river dredging by the combined structure of the hose, the pressure-resistant barrier and the valve. Meanwhile, in the present application, the opening and closing assembly with the air-tight pressure-bearing soft cloth can be arranged at the inlet of the valve, and the pressure-resistant barrier can be arranged near the outlet of the valve, so that the air-tight pressure-bearing soft cloth can be driven to move by the opening and closing assembly, and when the opening and closing assembly closes the channel of the valve, the air-tight pressure-bearing soft cloth can form a seal to the pressure-resistant barrier under the action of the medium pressure at the inlet of the valve, so as to ensure the sealing shielding effect of the valve and ensure that the valve has no internal leakage.

[0124] It should be understood that the content described in the disclosure part is not intended to limit the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0125] Figure 1 Structure schematic diagram of a water supply and drainage control device provided for embodiment 1 of the present application;

[0126] Figure 2 Structure schematic diagram of another water supply and drainage control device provided for embodiment 1 of the present application;

[0127] Figure 3Structure diagram of another water supply and drainage control device provided for Embodiment 1 of the present application;

[0128] Figure 4 Structure diagram of a water supply and drainage control device provided for Embodiment 3 of the present application;

[0129] Figure 5 Structure diagram of a water supply and drainage control device provided for Embodiment 3 of the present application when the hose is in a closed state;

[0130] Figure 6 Structure diagram of another water supply and drainage control device provided for Embodiment 3 of the present application;

[0131] Figure 7 Structure diagram of a pressure-resistant barrier of a water supply and drainage control device provided for Embodiment 3 of the present application;

[0132] Figure 8 Structure diagram of a water supply and drainage control device provided for Embodiment 5 of the present application;

[0133] Figure 9 Structure diagram of another water supply and drainage control device provided for Embodiment 5 of the present application;

[0134] Figure 10 Structure diagram of another water supply and drainage control device provided for Embodiment 5 of the present application;

[0135] Figure 11 Structure diagram of a first water supply and drainage control device provided for Embodiment 6 of the present application;

[0136] Figure 12 Structure diagram of a water supply and drainage control device provided for Embodiment 6 of the present application when the hose is in a closed state; Figure 11

[0137] Structure diagram of another water supply and drainage control device provided for Embodiment 6 of the present application; Figure 13 Figure 11 Structure diagram of a second water supply and drainage control device provided for Embodiment 6 of the present application;

[0138] Figure 14 Structure diagram of a water supply and drainage control device provided for Embodiment 6 of the present application when the hose is in a closed state;

[0139] Figure 15 Figure 14 Structure diagram of another water supply and drainage control device provided for Embodiment 6 of the present application;

[0140] Figure 16 Structure diagram of another water supply and drainage control device provided for Embodiment 6 of the present application; Figure 14

[0141] Structure diagram of another water supply and drainage control device provided for Embodiment 6 of the present application; Figure 17 Figure 14 ​​​Another structural view of the water supply and drainage control device in the embodiment 6 of the present application;

[0142] Figure 18 A structural view of a third water supply and drainage control device provided in the embodiment 6 of the present application;

[0143] Figure 19 A structural view of the water supply and drainage control device in the embodiment 7 of the present application; Figure 18 A top sectional view of the water supply and drainage control device in the embodiment 7 of the present application;

[0144] Figure 20 A structural view of the water supply and drainage control device in the embodiment 7 of the present application; Figure 18 A rack and pinion view of the water supply and drainage control device in the embodiment 7 of the present application;

[0145] Figure 21 A structural view of the water supply and drainage control device provided in the embodiment 7 of the present application;

[0146] Figure 22 A structural view of the water supply and drainage control device provided in the embodiment 8 of the present application;

[0147] Figure 23 A structural view of the water supply and drainage control device in the embodiment 8 of the present application; Figure 22 Another structural view of the water supply and drainage control device in the embodiment 8 of the present application when in a closed state;

[0148] Figure 24 Another structural view of the water supply and drainage control device in the embodiment 8 of the present application when in a closed state; Figure 22

[0149] A structural view of another water supply and drainage control device provided in the embodiment 8 of the present application; Figure 25

[0150] A structural view of the water supply and drainage control device provided in the embodiment 9 of the present application; Figure 26

[0151] A structural view of the water supply and drainage control device in the embodiment 9 of the present application; Figure 27 Figure 26 Another structural view of the water supply and drainage control device provided in the embodiment 9 of the present application.

[0152] Figure 28 Correspondence between the reference signs and the component names in the embodiment 9 of the present application is as follows:

[0153] Correspondence between the reference signs and the component names in the embodiment 9 of the present application is as follows: Figures 1 to 28

[0154] ​​12 pressure resistance barrier, 14 hose, 16 water outlet channel, 18 connecting pipe, 22 pressure resistance barrier, 222 outer frame ring, 224 partition rib, 24 hose, 26 mounting channel, 28 water outlet channel, 32 valve, 34 pressure resistance barrier, 36 hose, 38 mounting channel, 42 valve, 421 valve seat, 4212 fluid channel, 4214 opening and closing channel, 422 sliding assembly, 4222 sliding frame, 4224 roller, 423 valve cover, 424 valve rod, 425 actuator, 426 rod static sealing device, 427 limiting block, 428 guide wheel, 429 guide groove, 44 pressure resistance barrier, 46 hose, 52 valve, 521 valve seat, 5212 fluid channel, 5214 opening and closing channel, 522 gate plate, 523 wear-resistant hard rubber layer, 524 valve cover, 525 valve rod, 526 actuator, 527 rod static sealing device, 54 pressure resistance barrier, 56 hose, 62 valve, 621 valve seat, 6212 fluid channel, 6214 opening and closing channel, 622 valve flap, 623 valve cover, 624 valve rod, 625 actuator, 626 rod static sealing device, 627 rack, 628 gear, 64 pressure resistance barrier, 66 hose, 72 valve, 721 valve seat, 7212 fluid channel, 7214 opening and closing channel, 722 butterfly plate, 723 valve cover, 724 valve rod, 725 actuator, 74 pressure resistance barrier, 76 hose, 82 valve, 821 valve seat, 8212 fluid channel, 8214 opening and closing channel, 8216 guide groove, 822 valve cover, 823 valve rod, 824 inner telescopic rod, 825 rod static sealing device, 826 first release pressure rod, 827 frame, 8272 guide sliding block, 828 actuator, 829 limiting block, 84 air-tight pressure-bearing soft cloth, 86 pressure resistance barrier, 92 intercepting device, 921 shell assembly, 922 frame, 923 actuator, 924 air-tight pressure-bearing soft cloth, 925 movable rod, 926 inner telescopic rod, 927 first release pressure rod, 94 pressure resistance barrier, 96 hose, 98 intercepting dam. DETAILED DESCRIPTION

[0155] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0156] The water supply and drainage control device provided by the present application has strong control ability and at least includes a hose or at least includes a pressure resistance barrier and a hose. Figures 1 to 3 The pressure resistance barrier and the hose can be assembled into an independent basic structure I and used alone to achieve outlet check control and stop control of a pump, and the pressure resistance barrier and the hose can also be assembled into an independent basic structure II and used alone to achieve inlet check control and stop control of a pump. Figures 4 to 6The two parts with the installation channel are assembled into a separate basic structure to realize the control of the pump outlet check valve, stop valve, etc. Figures 8 to 10 The two basic structures can be directly installed at the outlet of the valve, water pump, etc. Figures 11 to 25 of the water draining vehicle to realize the control of the valve, water pump, etc. The combined valve can be used as a regulating valve, a cut-off valve, a check valve, etc. Figures 26 to 28 The pressure-resistant blocking piece and the hose can also be combined with the intercepting device or the valve to be used for river dredging. Of course, the pressure-resistant blocking piece and the hose can also be used for river dredging alone. In addition, the pressure-resistant blocking piece can be removed, and the hose is connected to the water outlet channel alone. The structure of the hose alone can be installed at the outlet of the valve, water pump, etc.

[0157] The water supply and drainage control device provided by the present application is described below in combination with nine specific embodiments.

[0158] Embodiment 1

[0159] As shown in Figures 1 to 3 , the embodiment 1 of the present application provides a water supply and drainage control device, which comprises a pressure-resistant blocking piece 12 and a hose 14, wherein:

[0160] The inlet of the hose 14 is used for sealing connection with a water outlet channel 16, and the hose 14 is a hose 14 with fabric;

[0161] The pressure-resistant blocking piece 12 is arranged corresponding to the outlet of the water outlet channel 16, is installed in the water outlet channel 16 or at the outlet of the water outlet channel 16, and the medium flowing out of the outlet of the water outlet channel 16 can flow out through the hose 14 after passing through the pressure-resistant blocking piece 12;

[0162] When the pressure in the hose 14 is less than the pressure outside the hose 14, at least part of the inner wall of the hose 14 can be tightly attached to each other under the action of the external atmospheric pressure and / or the pressure of the medium outside the hose 14 and form a static seal.

[0163] The water supply and drainage control device provided according to an embodiment of the present invention includes a pressure-resistant blocking member 12 and a hose 14. The hose 14 can be sealed and installed at the outlet of a water outlet channel 16 of a pump, valve, etc. The water outlet channel 16 of the pump, valve, etc. is used for the flow of media such as water and air. The water outlet channel 16 of the pump, valve, etc. can be a pipe-like structure with a wall thickness, or it can be a passageway in other structures. The pressure-resistant blocking member 12 is installed at the inlet of the water outlet channel 16. Specifically, it can be installed on the water outlet channel 16 of the pump, valve, etc., or it can be tightly installed by the water outlet channel 16 and the hose 14. Of course, the pressure-resistant blocking member 12 can also be directly installed inside the hose 14. Specifically, the hose 14 and the water outlet channel 16 can be directly and sealed or indirectly and sealed through a connecting pipe 18. The pressure-resistant blocking member 12 is preferably installed inside the water outlet channel 16 or inside the connecting pipe 18. The flexible hose 14 is preferably a single layer, but a multi-layered, stacked design is also possible. It should be a breathable hose with fabric, resistant to high and low temperatures, corrosion, wear, flexural strength, and pressure, such as a fire hose. The hose 14 is preferably designed so that its inner walls can fit together or separate depending on the influence of the external medium. The length of the hose 14 can be determined according to the diameter of the medium flowing through it. A length of five times the inner diameter of the outlet channel 16 is generally preferred. All water passages on the pressure-resistant barrier 12, or the water passages formed by the inner walls of the pressure-resistant barrier 12, the outlet channel 16, or the connecting pipe 18, are located inside the hose 14 and are connected to it. This means the hose wall surrounds all water passages, allowing water, air, and other media passing through the pressure-resistant barrier 12 to enter the hose 14 only through these passages, preventing leakage. The size of the water passages only needs to be large enough to block the hose, so they can be appropriately large. Preferably, the pressure-resistant barrier 12 can be configured as a straight rib, a cross rib, or a grid rib. Simultaneously, based on the flow principles of media such as water and air, when the pressure at the inlet side of the outlet channel 16 increases, for example, when a water pump starts at the inlet side of the outlet channel 16, the hose 14 is naturally expanded under pressure, allowing the medium to flow. Conversely, when the pressure in the outlet channel 16 decreases, for example, after the water or air in the outlet channel 16 stops flowing, the pressure in the channel connecting the outlet channel 16 and the hose 14 will be less than the pressure outside the hose 14 (the pressure outside the hose 14 refers to the pressure of the external environment of the hose 14, i.e., the pressure of the environment where the hose 14 is located). Thus, part or even all of the hose 14 will be flattened under the external pressure, i.e., the pressure difference between the inside and outside of the hose 14. This allows the inner wall of the hose 14, at least near the pressure-resistant barrier section, to tightly adhere to each other and form a static seal under the action of external atmospheric pressure and / or the pressure of the medium outside the hose 14, thereby blocking the inflow or outflow of the medium.This sealing method achieves self-sealing of the hose 14 through the pressure difference between its internal and external surfaces. This static sealing method provides excellent sealing performance and strong media interception capability, thus achieving true airtight shielding and zero leakage. This ensures the product's sealing performance and media interception capability, preventing gas and liquid leaks caused by poor sealing performance. This avoids economic losses due to gas and liquid leaks and protects lives from the release of toxic or corrosive substances from leaked media. Furthermore, this sealing method utilizes external pressure to irregularly compress the hose 14 from multiple directions, creating a longer sealing section and ensuring a strong seal. Moreover, the greater the pressure difference between the inside and outside of the hose 14, the better the sealing effect, thus solving the problem in existing solutions where a larger pressure difference leads to a weaker shielding effect. Furthermore, this structure can directly replace the original medium delivery pipe with the flexible hose 14, thereby realizing the medium delivery through the flexible hose 14. Alternatively, the flexible hose 14 can be directly installed inside the original medium delivery pipe. Neither of these methods significantly alters the volume or structure of the original structure. Moreover, this structure is very small in volume, very simple in structure, and relatively low in cost. Therefore, it can achieve efficient sealing and shielding with low cost and small volume, thus solving the technical problems of high cost, large volume, and complex structure of existing sealing and shielding structures.

[0164] In this design, the inlet portion of the hose 14 is sealed to the outlet channel 16, while the rest of the hose 14 is in a non-fixed state. That is, apart from the direct or indirect sealed connection between the inlet and outlet channel 16, the remaining portion of the hose 14 is in a non-fixed, natural state, meaning the tail of the hose 14 is not fixed by any external object. This allows the outside of the hose 14 to communicate with the external environment of the entire device, ensuring that the pressure near the outer wall of the hose 14 is consistent with the pressure of the surrounding environment. Furthermore, considering that the hose 14 in this application is a non-expandable hose with fabric, meaning it will not expand under pressure, this application cannot rely on the hose 14's own expansion and deformation for sealing. When the pressure inside the hose 14 is lower than the external environmental pressure, the hose 14 will retract into the outlet channel to varying degrees under the influence of the internal and external pressure difference, leaving the remaining portion of the hose 14 in a non-fixed, natural state. This allows the hose 14 to move freely and can be flattened at any point to form a static seal. That is, in this application, the hose 14 is required to be a non-expandable and compressible hose, so that the hose 14 will not expand after being compressed, and its inner walls can be compressed and fit together to form a static seal.

[0165] The pressure outside the hose 14 refers to the pressure of the external environment of the hose 14, that is, the pressure of the environment in which the hose 14 is located.

[0166] In this application, the pressure-resistant blocking member 12 primarily serves to block or support the hose 14, preventing it from being squeezed back into the water outlet channel 16 when it is compressed by external atmospheric pressure or external liquid pressure. This allows the hose 14 to be compressed and accumulated on the pressure-resistant blocking member 12, preventing it from being directly sucked into the water outlet channel 16. In this application, the medium pressure outside the hose 14 mainly includes the liquid outside the hose 14.

[0167] In this case, when the hose 14 is long enough, for example, as the drain pipe of a water pump, if the water pump is started for the first time and a vacuum is drawn, a negative pressure will be formed inside the hose 14 due to the vacuum drawn by the water pump. At this time, the inner wall of the hose 14 will be flattened under the action of external atmospheric pressure to form a static seal. At the same time, due to the attraction of the negative pressure inside the hose 14, the hose 14 will also be squeezed back by external pressure. At this time, the pressure-resistant blocking member 12 can intercept the hose 14 to prevent the hose 14 from being sucked into the water outlet channel 16 due to the negative pressure. In this way, the hose 14 will partially retract and stack on the pressure-resistant blocking member 12 while forming a static seal. However, if the water pump pauses and then restarts after pumping water, and if the hose 14 is long enough and its tail is filled with medium, the portion of the hose 14 near the pressure-resistant barrier 12 will still be flattened under the pressure difference, allowing the internal parts of the hose 14 to fit tightly together and form a self-sealing seal. However, because the tail of the hose 14 is held back by the weight of the water or other medium inside, the inner wall of the hose 14 will still be compressed and retracted by external pressure when forming a static seal under atmospheric pressure. However, the retraction length will be much shorter than the retraction length during the initial pump start-up. Furthermore, when a pressure difference exists between the inside and outside of the hose 14, if the inlet section of the hose 14 is filled with water or other medium, the water or other medium in the inlet section will be squeezed out, allowing the hose 14 to also be flattened and its internal parts to fit together and form a static seal.

[0168] Meanwhile, when the hose 14 is not filled with a medium, the inner wall of the hose 14 will be completely flattened by the external pressure. When the tail of the hose 14 is filled with water, the inner wall of the front end of the hose 14 will be flattened, causing the interiors to fit together and form a static seal.

[0169] Specifically, the pressure inside the hose 14 being less than the pressure outside the hose 14 includes the following situations: the water outlet channel 16 is evacuated, the water supply to the water outlet channel 16 is suddenly stopped, or there is no medium in the channel formed by the water outlet channel 16 and the hose 14, but there is water or other liquid outside the hose 14. In this case, the hose 14 will also be flattened under the pressure of the external medium, so that the inside of the hose 14 can be pressed tightly together to form a static seal.

[0170] in, Figures 1 to 3 The arrows in the diagram indicate the direction of medium flow.

[0171] In the above scheme, the pressure-resistant blocking component 12 and the hose 14 can be installed in different ways according to actual needs. This application introduces the following specific installation methods:

[0172] Method 1: The inlet of the hose 14 is directly and sealed to the outlet channel 16, and the pressure-resistant blocking component 12 is installed inside the outlet channel 16 or at the outlet of the outlet channel 16.

[0173] Method 2: The inlet of the hose 14 is sealed to the outlet channel 16 through the connecting pipe 18. The pressure-resistant blocking component 12 is installed in the outlet channel 16 or the connecting pipe 18. When the pressure-resistant blocking component 12 is installed in the connecting pipe 18, the pressure-resistant blocking component 12 and the connecting pipe 18 are an integral structure or a separate structure. Preferably, the pressure-resistant blocking component 12 and the connecting pipe 18 are welded into an integral structure.

[0174] More preferably, such as Figures 1 to 3 As shown, the edges of the pressure-resistant blocking member 12 are all connected to the side wall of the water outlet channel 16 or the side wall of the connecting pipe 18. That is, when the pressure-resistant blocking member 12 is installed in the water outlet channel 16 or the connecting pipe 18, there is no gap between the pressure-resistant blocking member 12 and the inner wall of the water outlet channel 16 or the connecting pipe 18 in the radial direction.

[0175] In another embodiment, preferably, (not shown in the figure) part of the edge of the pressure-resistant barrier 12 is connected to the side wall of the water outlet channel 16 or the side wall of the connecting pipe 18, and another part of the edge of the pressure-resistant barrier 12 is provided with a preset distance from the side wall of the water outlet channel 16 or the side wall of the connecting pipe 18. That is, the upper and lower sides or the left and right sides of the pressure-resistant barrier 12 are not completely in contact with the inner wall of the water outlet channel 16 or the connecting pipe 18, but are provided with some gaps. For example, the pressure-resistant grid is only installed to about half the height of the water outlet channel 16 or the connecting pipe 18 in the radial direction.

[0176] In any of the above embodiments, preferably, a flange structure is provided at the inlet of the hose 14, and a connecting flange is provided at the outlet of the water outlet channel 16, allowing the hose 14 and the water outlet channel 16 to be directly and sealingly connected via the flange structure and the connecting flange. With this configuration, the hose 14 and the water outlet channel 16 can be installed via the flange. A pressure-resistant blocking component can be installed inside the water outlet channel 16 or at its outlet. Furthermore, in this structure, the flange structure is part of the hose 14; the flange structure and the hose 14 can be an integral structure or a separate structure.

[0177] Preferably, such as Figures 1 to 3 As shown, the inlet of the hose 14 is sealed to the outlet channel 16 via a connecting pipe 18. One end of the connecting pipe 18 and the outlet channel 16 are detachably and sealed together, and the hose 14 is airtightly installed on the other end of the connecting pipe 18. The connecting pipe 18 can be a connecting flange or similar structure. In this case, the pressure-resistant barrier 12 can be installed at any position on the connecting pipe 18, including the port, and the pressure-resistant barrier 12 and the connecting pipe 18 can be connected as a single unit or integrally formed. Alternatively, the pressure-resistant barrier 12 and the connecting pipe 18 can be welded together.

[0178] More preferably, when the pressure-resistant blocking component 12 is installed inside the connecting pipe 18, the pressure-resistant blocking component 12 and the connecting pipe 18 are welded into an integral structure, injection molded into an integral structure, or cast into an integral structure.

[0179] More preferably, such as Figures 1 to 3 As shown, the connecting pipe 18 includes an outer frame ring and an outer extension pipe. The outer extension pipe is connected to the outer frame ring in a stepped manner. The outer extension pipe is used for a sealed connection with the hose 14. The outer frame ring is used for a sealed connection with the water outlet channel 16. The baffle is installed inside the outer frame ring in the radial direction.

[0180] In any of the above embodiments, preferably, the pressure-resistant blocking member 12 is installed in the water outlet channel 16 or at the outlet of the water outlet channel 16 along the radial direction of the water outlet channel 16. That is, the pressure-resistant blocking member 12 is installed vertically in the water outlet channel 16, or the pressure-resistant blocking member 12 is set at a preset angle with the axial direction of the water outlet channel 16. The preset angle is greater than 0° and less than 90°. That is, the pressure-resistant blocking member 12 can also be installed at an angle relative to the water outlet channel 16, and does not necessarily have to be installed vertically.

[0181] In any of the above embodiments, preferably, the connecting pipe 18 is a quick-connect fitting or a connecting flange.

[0182] In any of the above embodiments, preferably, the pressure-resistant blocking member 12 is a protruding structure installed in the water outlet channel 16. For example, when this structure is used in a pump with a tongue, the pressure-resistant blocking member 12 can be directly a tongue installed at the pump outlet.

[0183] In any of the above embodiments, preferably, the pressure-resistant barrier 12 has a structure with one or more ribs, and the pressure-resistant barrier 12 is preferably a straight rib, a cross rib, or a grid rib. This arrangement facilitates the installation of the pressure-resistant barrier 12 into the hose 14 or the connecting pipe 18.

[0184] Preferably, the pressure-resistant blocking component 12 and the hose 14 can be assembled into a single component, thus making it convenient to disassemble and store the pressure-resistant blocking component 12 and the hose 14 as a whole.

[0185] Preferably, the pressure-resistant blocking component 12 is an integral structure.

[0186] Preferably, the hose 14 is a fabric-lined pressure-bearing hose 14 and / or the hose 14 is made of an airtight pressure-bearing soft material. Further, the hose 14 is a fabric-lined, high and low temperature resistant, corrosion resistant, wear resistant, and fire resistant pressure-bearing airtight hose 14.

[0187] Preferably, the inlet and / or outlet of the channel connected to the hose 14 is round or square. For example, when the hose 14 is directly connected to the connecting pipe 18, the inlet and / or outlet of the connecting pipe 18 can be round or square. Similarly, when the hose 14 is directly connected to the water outlet channel 16, the outlet of the water outlet channel 16 can be round or square.

[0188] Example 2 (not shown in the figure)

[0189] The second aspect of the present invention provides a water supply and drainage control device, comprising:

[0190] Water outlet channel;

[0191] The hose has a sealed connection between its inlet and outlet channels, and is a hose lined with fabric.

[0192] Specifically, when the pressure inside the hose is greater than the pressure outside the hose, the water outlet channel is connected to the hose; when the pressure inside the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly pressed together to form a static seal under the action of external atmospheric pressure and / or the pressure of the medium outside the hose.

[0193] More preferably, the outlet size of the water outlet channel is smaller than the inlet size of the hose, that is, the cross-sectional area of ​​the inner wall of the outlet section of the water outlet channel is smaller than the cross-sectional area of ​​the inner wall of the hose inlet. This allows the outlet section of the water outlet channel to create a certain obstruction on the hose, thereby preventing the hose from shrinking inward. Specifically, for example, the outlet section of the water outlet channel can be designed with a gradually inward-curving structure, or the inlet and outlet of the water outlet channel can be designed with a stepped structure, and the inlet area of ​​the water outlet channel is larger than the outlet area of ​​the water outlet channel.

[0194] More preferably, the water supply and drainage control device includes a self-priming pump, and the water outlet channel is set on the self-priming pump, that is, the flexible hose with fabric is directly connected to the outlet of the water outlet channel of the self-priming pump. With this structure, when the self-priming pump draws a vacuum, the pressure inside the hose is less than the external pressure, and the hose can fit together under the action of external pressure to form a static seal. After the pump is working normally, the pressure inside the hose is greater than the external pressure, and the hose is normally connected to the water outlet channel of the self-priming pump.

[0195] Of course, this structure can also be used directly for marine ballast pumps such as those used on ships. In this case, a hose can be directly connected to the outlet of the water outlet channel of the marine ballast pump.

[0196] Example 3

[0197] like Figures 4 to 7 As shown, an embodiment of the third aspect of the present invention provides a water supply and drainage control device, including a pressure-resistant blocking member 22, a flexible hose 24, and an installation channel 26, wherein:

[0198] Installation channel 26 is used for a sealed connection with water outlet channel 28;

[0199] The hose 24 is located inside the installation channel 26. An installation structure is provided at the inlet of the hose 24. The installation structure is installed inside the installation channel 26 or at the inlet of the installation channel 26. The hose 24 is a hose with fabric or a soft cloth tube.

[0200] The pressure-resistant barrier 22 is installed at the inlet of the hose 24, so that the medium entering from the inlet of the installation channel 26 can pass through the pressure-resistant barrier 22 and then flow out of the hose 24.

[0201] When the pressure inside the hose 24 is less than the pressure outside the hose 24, at least a portion of the inner wall of the hose 24 can be tightly pressed together to form a static seal under the action of external atmospheric pressure and / or the pressure of the medium outside the hose 24.

[0202] The water supply and drainage control device provided according to an embodiment of the present invention includes a pressure-resistant blocking member 22, a hose 24, and an installation channel 26. The installation channel 26 can specifically be a fluid channel on a valve or a pipe. In this embodiment, the structure and shape of the hose 24 and the pressure-resistant blocking member 22, as well as the installation method, can refer to Embodiment 1. Furthermore, the function and effect of the hose 24 and the pressure-resistant blocking member 22 are the same as in Embodiment 1, and will not be repeated here. The only difference between this embodiment and Embodiment 1 is that in this embodiment, an installation channel 26 is provided outside the hose 24. Therefore, during installation, the installation channel 26 can be directly connected to the water outlet channel 28, thus protecting the hose 24.

[0203] Specifically, the pressure inside the hose 24 being less than the pressure outside the hose 24 includes the following situations: the water outlet channel 28 is evacuated, the water supply to the water outlet channel 28 is suddenly stopped, or there is no medium in the channel formed by the water outlet channel 28 and the hose 24, but there is water or other liquid outside the hose 24. In this case, the hose 24 will also be flattened under the pressure of the external medium, so that the inside of the hose 24 can be pressed tightly together to form a static seal.

[0204] Preferably, the pressure-resistant blocking member 22 is provided with at least one water passage, and / or at least one water passage is formed between the pressure-resistant blocking member 22 and the inner wall of the installation channel 26, and all water passages are sealed and connected to the hose 24.

[0205] in, Figure 4 and Figure 5 The arrows in the diagram indicate the direction of medium flow.

[0206] In any of the above embodiments, preferably, such as Figures 4 to 6 As shown, a first connecting flange is provided at the outlet of the water outlet channel 28, and a second connecting flange is provided at the inlet of the installation channel 26 to mate with the first connecting flange. The installation structure is a flange structure that can be installed at the inlet of the installation channel 26. The edge or outer ring of the pressure-resistant blocking member 22 is airtightly installed between the flange structure and the first connecting flange. This arrangement allows the water outlet channel 28 and the installation channel 26 to be connected via flanges.

[0207] In another embodiment, the pressure-resistant barrier 22 and the water outlet channel 28 are detachably and airtightly connected via a quick-connect coupling or a connecting flange, and the hose 24 is airtightly mounted on the pressure-resistant barrier 22. This arrangement allows for quick and easy assembly and disassembly between the pressure-resistant barrier 22 and the water outlet channel 28.

[0208] In any of the above embodiments, preferably, the installation channel 26 is a rigid tube. The rigid tube has a certain strength, thus ensuring that the flexible tube 24 is not damaged.

[0209] Preferably, the mounting channel 26, the hose 24, and the pressure-resistant barrier 22 can be assembled into a single component.

[0210] Preferably, the pressure-resistant blocking component 22 is an integral structure.

[0211] Preferably, the pressure-resistant blocking component 22 is a straight rib, a cross rib, or a grid rib.

[0212] Preferably, the hose 24 is a fabric-lined pressure-bearing hose or the hose 24 is made of an airtight pressure-bearing soft material such as fire-resistant cloth. Further, the hose 24 is a fabric-lined, high and low temperature resistant, corrosion resistant, wear resistant, and fire-resistant pressure-bearing airtight hose.

[0213] Preferably, the inlet and / or outlet of the channel connected to the hose 24 is round or square. For example, when the hose 24 is directly connected to the channel on the pressure-resistant barrier 22, the inlet and / or outlet of the channel on the pressure-resistant barrier 22 can be round or square. Or, when the hose 24 is directly connected to the water outlet channel 28, the outlet of the water outlet channel 28 can be round or square. Or, when the hose 24 is directly connected to the connecting flange, the inlet and / or outlet of the connecting flange can be round or square.

[0214] Preferably, the flexible tube 24 can be either a tubular structure or a sheet structure.

[0215] In any of the above embodiments, preferably, the pressure-resistant blocking component 22 is welded into an integral structure, or the pressure-resistant blocking component 22 is injection molded into an integral structure, or the pressure-resistant blocking component 22 is cast into an integral structure.

[0216] In any of the above embodiments, preferably, such as Figure 7 As shown, the pressure-resistant barrier 22 includes an outer frame ring 222, an extended tube, and a baffle 224. The extended tube is disposed on the inner wall of the outer frame ring 222 and is used to connect the hose 24. The baffle 224 is integrally installed on the outer frame ring. In this structure, the outer frame ring is equivalent to the flange structure of the pressure-resistant barrier 22, while the extended tube serves as the pipe connection part of the pressure-resistant barrier 22 for installing the hose 24. The baffle's function is to block the hose 24 and prevent it from being squeezed into the water outlet channel 28 when squeezed by external pressure. Of course, in other embodiments, the pressure-resistant barrier 22 can also be configured as a structure of one or more grid bars. In this case, an additional connecting structure can be provided, and the hose 24 and the pressure-resistant barrier 22 can be installed through the connecting structure.

[0217] Preferably, the inlet portion of the hose 24 is fixed by the mounting structure, while the rest of the hose 24 is in a non-fixed state; that is, apart from the inlet being fixed by the mounting structure, the rest of the hose 24 is in a non-fixed, natural state. The benefits of this arrangement are the same as in the embodiment, and will not be repeated here.

[0218] In any of the above embodiments, preferably, the pressure-resistant blocking member 22 is installed in the water outlet channel 28 or at the outlet of the water outlet channel 28 along the radial direction of the water outlet channel 28. That is, the pressure-resistant blocking member 22 is installed vertically in the water outlet channel 28, or the pressure-resistant blocking member 22 is set at a preset angle with the axial direction of the water outlet channel 28. The preset angle is greater than 0° and less than 90°. That is, the pressure-resistant blocking member 22 can also be installed at an angle relative to the water outlet channel 28, and does not necessarily have to be installed vertically.

[0219] Example 4

[0220] Embodiment 4 of the present invention provides a water supply and drainage control device, including: a basic structure composed of a hose and a pressure-resistant blocking member or a structure consisting of a single hose as provided in any one of the first, second or third embodiments; and a water pump (not shown in the figure), which is provided with a water outlet channel for realizing the drainage of the water pump.

[0221] More preferably, the water pump is a drainage truck water pump. The hose, pressure-resistant blocking component, and water pump are detachably connected.

[0222] Specifically, for example, a base structure consisting of a hose and a pressure-resistant barrier, or a base structure consisting of a hose, a pressure-resistant barrier, and a part with an installation channel, or a hose structure alone, can be applied to a drainage vehicle. Specifically, for example, the aforementioned base structure one or base structure two can be directly connected to the outlet of the drainage vehicle's water pump so that backflow prevention, shut-off, and other controls on the drainage vehicle's water pump outlet can be achieved through the pressure-resistant barrier and hose.

[0223] When applying the structure of hoses and pressure-resistant blocking components to drainage vehicles, on one hand, the hose length can be designed according to the hose sealing requirements. In this case, the hose, pressure-resistant blocking component, and rigid pipe with installation channel can be combined into a basic structure and then installed between the pump outlet and the pump drain pipe of the drainage vehicle. On the other hand, the hose length can be designed according to the required length of the drain pipe, rather than according to the hose sealing requirements. This allows the hose to be long enough to be directly used as the pump drain pipe, thus combining the pump drain pipe, pressure-resistant blocking component, and hose basic structure together.

[0224] In one specific embodiment, the water supply and drainage control device is part of the water pumping equipment. In this case, the control structure consisting of a pressure-resistant baffle and a hose can be connected between the water pump outlet and the drain pipe of the water pumping equipment, and the hose is inserted into the drain pipe. Simultaneously, the water pump is installed on the ground, and the pumping pipe is airtightly inserted into the water tank. With this structure, after the water pump stops pumping, the pressure inside the pump decreases. This causes part or even all of the hose to be flattened by the external pressure, i.e., the pressure difference between the inside and outside of the hose. This allows the inner wall of the hose, at least the section closest to the pressure-resistant baffle, to tightly adhere to each other under the action of atmospheric pressure and / or the pressure of the medium outside the hose, forming a static seal. This prevents water in the drain pipe from flowing back into the water pump through the pressure-resistant baffle. The static seal formed by the inner wall of the hose acts as a check valve, thereby protecting the internal structure of the water pump.

[0225] Simultaneously, in this structure, when the water pump is not operating, the hose naturally droops under gravity. During the initial vacuum priming of the water pump, a vacuum gradually forms within the channel formed by the pump and hose. This causes the pressure inside the hose to be lower than the atmospheric pressure outside. Because the hose is a pressure-bearing and easily compressible structure, it is flattened under the influence of atmospheric pressure (or the pressure difference between the inside and outside of the hose). This flattens the inner wall of the hose, creating a static seal. At the same time, since there is no water flowing through the hose to hold it in place, the hose is further compressed by the negative pressure inside and pushed back towards the pressure-resistant barrier. The pressure-resistant barrier then intercepts the hose, preventing it from being sucked into the outlet channel due to the negative pressure. Thus, the hose partially retracts and stacks onto the pressure-resistant barrier while forming a static seal. A more intuitive observation is that after the water inlet section of the hose is flattened to form a static seal, the hose retracts noticeably and accumulates at the pressure-resistant barrier. By creating a static seal through the flexible hose, the airtightness of the water pump at the outlet side is ensured. The pump's suction pipe, inserted into the water tank, is also sealed by water, ensuring effective sealing on both the inlet and outlet sides. This allows sufficient negative pressure (vacuum) to be created inside the pump, enabling water pumping. However, in existing solutions, whether using gate valves, ball valves, or butterfly valves, issues such as particles, crystals, corrosion, abrasion, sewage, high temperatures, or low temperatures can cause incomplete sealing or prevent opening. Therefore, when the pump starts, the outlet valve often doesn't close completely, preventing the necessary negative pressure from forming inside the pump and thus preventing water from the tank from being drawn into the pump chamber. The water supply and drainage control device provided in this application utilizes the pressure difference formed on both sides of the pressure-resistant barrier during vacuum priming of the water pump to seal the hose itself and partially compress it against the pressure-resistant barrier, thereby achieving a seal. This ensures a true seal at the pump outlet during vacuum priming, allowing the pump to generate the necessary negative pressure for pumping. Once the negative pressure inside the pump is sufficient, atmospheric pressure forces water into the pump chamber, and the hose opens after the pump starts operating.

[0226] When the water pump stops and then restarts, the hose fills with water. At this time, the section of the hose near the pressure-resistant barrier is higher and has no medium. Therefore, this section can still be compressed and flattened under the pressure difference, creating a tight seal between the hose's internal components. However, because the hose's tail is held in place by the weight of the water and other medium inside, the hose's inner wall is compressed under atmospheric pressure to form a static seal. Even when this seal is formed, the hose will still be partially retracted by external pressure, but the retraction length will be much shorter than during the initial pump start-up. The most noticeable difference is that the water inlet section of the hose is compressed to form a static seal, but the retraction of the hose itself is not significant.

[0227] In the above embodiments, preferably, the pump is a self-priming pump, so that the above-mentioned pumping equipment can complete self-priming drainage. Of course, the pump can also be used in conjunction with a vacuum device to achieve the vacuum required for pumping water.

[0228] In any of the above embodiments, preferably, the installation channel is a rigid pipe, which facilitates the connection of both ends of the installation channel to pumps, pipes, etc.

[0229] More preferably, the installation channel is detachably connected between the pump and the drain pipe, and the installation channel is preferably a rigid pipe, that is, the installation channel is a rigid pipe that can be independently connected between the pump and the drain pipe.

[0230] In this embodiment, the material, installation location, and shape of the pressure-resistant blocking component of the hose can be set with reference to the previous embodiment, and will not be repeated here. The pump is a relatively common structure, and will not be described further here.

[0231] In another embodiment, the structure consisting of the pressure-resistant blocking component and the hose described in this application is directly installed at the outlet or inside the outlet pipe of the ballast water pump used on ships, warships, etc. This allows the outlet pipe of the ballast water pump to be shielded after the ship's weight has been adjusted by pumping water, preventing seawater from flowing back into the hull. This sealing method ensures that after the ballast water pump stops pumping water, the hose forms a very tight static seal under the pressure of the seawater. Because the seawater pressure is very high, it compresses the hose very tightly, thus completely shielding the outlet pipe of the ballast water pump. This achieves a shielding effect with no internal or external leakage, fully ensuring the sealing and shielding effect of the ballast water pump. This avoids problems such as water leakage in the bilge caused by improper valve closure of the ballast water pump on ships, warships, etc., thereby reducing the maintenance and repair costs caused by bilge leakage and preventing safety hazards to civilians caused by bilge leakage. Meanwhile, this structure allows the pressure-resistant blocking components and hoses to be installed on the outside of the hull or slightly recessed from the outside into the hull during installation, thus taking up virtually no space inside the ship. This solves the problem of insufficient space on board, making it unsuitable to install large sealed shielding systems.

[0232] Example 5

[0233] like Figures 8 to 10As shown, Embodiment 5 of the present invention provides a water supply and drainage control device, comprising: a basic structure consisting of a hose 36 and a pressure-resistant blocking member 34 as provided in any one of the first or second embodiments; and a valve 32, which has a water outlet channel, which is a fluid channel of the valve 32; wherein the basic structure consisting of the hose 36 and the pressure-resistant blocking member 34 as provided in any one of the first or second embodiments is installed at the outlet of the valve 32, that is, the valve 32 is installed at the inlet of the hose 36; wherein the valve 32 and the installation channel 38 are an integral structure, or the valve 32 and the installation channel 38 are detachably connected.

[0234] According to an embodiment of the present invention, the water supply and drainage control device combines a control structure consisting of a pressure-resistant blocking member 34 and a hose 36 with a valve 32. This allows for dual control of the medium through either a basic structure consisting of the valve 32, the pressure-resistant blocking member 34, and the hose 36, or a second basic structure consisting of the valve 32, the installation channel 38, the pressure-resistant blocking member 34, and the hose 36. Specifically, the dynamic seal of the valve itself enables backflow prevention and shut-off control of the medium, while the static seal formed by the inner wall of the hose provides internal sealing and zero leakage, thus ensuring that the product has no internal leakage issues.

[0235] Specifically, the structure of the valve 32 can be configured in different types according to actual needs, such as ball valve, butterfly valve or gate valve, etc., without specific limitations.

[0236] When valve 32 is a gate valve, the structure of the basic structure consisting of mounting channel 38, pressure-resistant blocking component 34, and hose 36 combined with the gate valve is as follows: Figure 8 As shown. When valve 32 is a ball valve, the structure of the basic structure consisting of mounting channel 38, pressure-resistant blocking component 34, and hose 36 combined with the ball valve is as follows. Figure 9 As shown, when valve 32 is a butterfly valve, the structure of the basic structure consisting of mounting channel 38, pressure-resistant blocking component 34, and hose 36 combined with the butterfly valve is as follows: Figure 10 As shown, ball valves, butterfly valves, or gate valves are relatively common valve structures. Therefore, the specific structure of ball valves, butterfly valves, or gate valves can be found in existing solutions and will not be described in detail here.

[0237] Example 6

[0238] like Figures 11 to 20 As shown, the fifth aspect of the present invention provides a water supply and drainage control device, including a valve, a pressure-resistant blocking element, and a hose. Specifically, the valve can be valve 42, valve 52, or valve 62; the pressure-resistant blocking element can be pressure-resistant blocking element 44, pressure-resistant blocking element 54, or pressure-resistant blocking element 64; and the hose can be hose 46, hose 56, or hose 66. Specifically:

[0239] The valve includes a housing assembly (mainly composed of a valve seat and a valve cover) and an opening and closing assembly. The housing assembly has a fluid passage, and the opening and closing assembly is movably installed in the fluid passage.

[0240] The pressure-resistant barrier is installed inside the fluid channel and is positioned near the inlet of the fluid channel. The pressure-resistant barrier is provided with at least one water passage, and / or at least one water passage is formed between the pressure-resistant barrier and the inner wall of the fluid channel.

[0241] The hose is located inside the fluid channel and is sealed to the pressure-resistant barrier. All water passages are sealed to the hose. The medium entering from the inlet of the fluid channel can flow out of the hose after passing through at least one water passage. The hose is a fabric-covered hose, i.e., a non-expandable hose.

[0242] The opening and closing assembly can be used to squeeze the hose and make the inner walls of the hose fit together tightly to form a static seal. The opening and closing assembly can also be used to loosen the hose so that the hose can be opened. When the pressure inside the hose is less than the pressure outside the hose, at least part of the inner walls of the hose can fit together tightly to form a static seal under the action of external atmospheric pressure and / or the pressure of the medium outside the hose.

[0243] The water supply and drainage control device provided by the embodiments of the invention realizes the combination of valve, hose, and pressure-resistant blocking component. The combined structure can realize the valve's flow regulation, opening and closing control functions through the valve. At the same time, the combined valve can also achieve internal sealing shielding when shut off through the hose, so that the combined valve has the characteristic of no internal leakage when shut off, effectively solving the problem of low valve sealing performance and easy medium leakage in the prior art. The specific structure of the valve can be set as a ball valve, butterfly valve, etc., according to actual needs. The valve itself can be used as a regulating valve, shut-off valve, or check valve. In the combined valve structure, the pressure-resistant blocking element and the hose are installed within the valve's fluid passage. Specifically, the pressure-resistant blocking element and the hose can be positioned at the valve inlet, that is, the pressure-resistant blocking element is placed in front of the opening and closing assembly. The positions of the opening and closing assembly and the hose can be strategically chosen to further compress and deform the hose using the action of the opening and closing assembly. This allows the hose to not only be flattened to form a static seal due to the pressure difference between its inner and outer sides, but also to achieve a static seal through the opening and closing assembly within the valve. This increases the force of the hose's flattening and static seal formation, thereby enhancing the sealing effect and improving the ability of the water supply and drainage control device to cut off the medium. Furthermore, this structure allows the opening and closing assembly to press down one end of the hose, preventing the hose from retracting towards the inlet of the passage under the combined action of the pressure-resistant blocking element and the opening and closing assembly.

[0244] More preferably, part of the hose is sealed to the pressure-resistant barrier, while the rest of the hose is in a non-fixed state. That is, apart from part being fixed, the rest of the hose is in a non-fixed natural state, which allows the rest of the hose to be flattened under the action of internal and external pressure difference to form a seal.

[0245] When the pressure-resistant blocking component is placed on the front side of the opening and closing assembly, that is, at the valve inlet, the length of the hose can be reasonably set to ensure the sealing effect of the hose.

[0246] More preferably, the opening and closing assembly can adjust the opening size of the fluid channel and / or control the opening and closing of the fluid channel. That is, when closed, the opening and closing assembly fits snugly against the inner wall of the housing assembly without leaving any gaps. Therefore, the opening and closing assembly is not merely a structure for squeezing or releasing the hose; it can also realize the normal opening and closing of the valve itself. The hose's role is simply to further ensure the internal sealing of the valve through static sealing, thus preventing internal leakage after the opening and closing assembly is closed. Of course, in other solutions, the opening and closing assembly may not need to realize the normal opening and closing of the valve; it may simply be a structure for squeezing or releasing the hose.

[0247] The structure of the valve described above will be described in detail below with reference to three specific embodiments.

[0248] In a specific valve design, such as Figures 11 to 13 As shown, the valve is valve 42. In valve 42, the housing assembly includes a valve seat 421 and a valve cover 423. A fluid passage 4212 is disposed on the valve seat 421. The valve seat 421 is also provided with an opening and closing passage 4214 connected to the fluid passage 4212. The valve cover 423 is disposed at the end of the opening and closing passage 4214 away from the fluid passage 4212. Valve 42 also includes a valve stem 424 and an actuator 425. One end of the valve stem 424 is located outside the valve cover 423 and is connected to the actuator 425. The other end of the valve stem 424 passes through the valve cover 423 and is telescopically installed into the fluid passage 4212 by the opening and closing passage 4214. The opening and closing assembly is connected to the other end of the valve stem 424 and can move back and forth along the axial direction of the opening and closing passage 4214 when the valve stem 424 extends or retracts, so as to squeeze or release the hose 46. The actuator 425 is used to control the extension and retraction of the valve stem 424.

[0249] The opening and closing assembly is a sliding assembly 422 that can slide back and forth in the fluid channel 4212 and along the axial direction of the opening and closing channel 4214. The sliding assembly 422 includes a sliding frame 4222 and a roller 4224. One end of the sliding frame 4222 is connected to the end of the valve stem 424 that extends into the fluid channel 4212. The roller 4224 is located at the end of the sliding frame 4222 away from the valve stem 424. The sliding assembly 422 squeezes the hose 46 through the roller 4224 and makes the inner walls of the hose 46 fit tightly together to form a static seal. The sliding assembly 422 can also release the hose 46 through the roller 4224.

[0250] A stem static seal device 426 is provided on the valve stem 424. The stem static seal device 426 is located inside the valve seat 421. The valve cover 423 is provided with a through hole for installing the valve stem 424. The stem static seal device 426 can seal the end of the through hole near the valve seat 421 to prevent the medium from leaking out of the valve seat 421 through the through hole. The material of the stem static seal device 426 is the same as that of the hose 46. The stem static seal device 426 is a telescopic corrugated tubular structure.

[0251] More preferably, a limit block 427 is installed at the bottom of the inner wall of the valve seat 421; guide wheels 428 are provided on both sides of the sliding frame 4222, and the guide wheels 428 can slide in the guide grooves 429 on both sides of the valve seat 421.

[0252] In this embodiment, the combined structure of valve 42, pressure-resistant blocking member 44, and hose 46 can be specifically used in equipment such as water pump trucks. When the water pump truck stops pumping water, a signal is transmitted to the actuator 425, causing the valve stem 424 to move downward instantaneously. One end of the valve stem 424 is provided with a sliding frame 4222, and guide wheels 428 are provided on both sides of the sliding frame 4222. The sliding frame 4222 slides through the guide grooves 429 on both sides of the valve seat 421. A roller 4224 is provided at the front end of the sliding frame 4222. The roller 4224 is used to squeeze the hose 46 and make the inner walls of the hose 46 fit tightly together to form a static seal, or to loosen the hose 46. At the same time, the pressure on the inlet side is low, forming a negative pressure chamber, and the inner walls of the hose 46 fit tightly together to form a static seal. At the same time, the hose 46 may retract partly towards the pressure-resistant blocking member 44. Conversely, when the water pump truck starts, the roller 4224 is rapidly lifted, the hose 46 opens, and the medium passes through. In this structure, the pressure-resistant blocking element 44 allows the medium to pass through while also providing a barrier for the hose 46. This prevents the hose from being sucked into the valve inlet side when it is flattened to form a static seal. The hose 46, through this static seal, improves the internal shielding effect of the valve 42, ensuring that the valve 42 does not leak internally after closing. The hose 46 is preferably a fabric hose, possessing characteristics such as pressure resistance, temperature resistance, and corrosion resistance. The roller 4224 serves only as an auxiliary seal; when the inlet pressure is very low, a gap may exist at the fold of the hose 46, and the roller 4224 will provide some pressure. This configuration reduces the motor power required for the actuator 425, resulting in energy savings.

[0253] In a preferred embodiment, such as Figures 11 to 13As shown, valve 42 includes valve seat 421, roller 4224, sliding frame 4222, stem static seal device 426, valve cover 423, valve stem 424, actuator 425, limit block 427, guide groove 429, and guide wheel 428, while fluid channel 4212 is disposed within valve seat 421; wherein: the end face of valve seat 421 is airtightly connected to valve cover 423, valve stem 424 is installed inside valve seat 421, the first end of valve stem 424 is connected to actuator 425, the second end is mounted with sliding frame 4222, roller 4224 is disposed at the front end of sliding frame 4222, and stem static seal device 426 is mounted on valve stem 424; the bottom of the inner wall of valve seat 421 A limit block 427 is installed; guide wheels 428 can be installed on both sides of the sliding frame 4222, and the guide wheels 428 can slide in the guide grooves 429 on both sides of the valve seat 421; the roller 4224 is controlled to move up and down by the actuator 425 to achieve shielded, leak-free, shut-off and backflow prevention operation; the hose 46 and the pressure-resistant blocking component 44 are installed at the bottom inlet of the valve seat 421, and during the descent of the roller 4224, the roller 4224 squeezes the hose 46 and makes the inner walls of the hose 46 fit tightly together to form a static seal, and when the roller 4224 descends to the bottom, the left side fits tightly against the hose 46, the right side fits against the limit block 427, and the bottom fits against the inner wall of the valve. In the valve 42, the opening and closing assembly consists of the sliding frame 4222 and the roller 4224.

[0254] In another specific valve design, such as Figures 14 to 17 As shown, the valve is valve 52. In valve 52, the housing assembly includes a valve seat 521 and a valve cover 524. A fluid passage 5212 is disposed on the valve seat 521. The valve seat 521 is also provided with an opening and closing passage 5214 connected to the fluid passage 5212. The valve cover 524 is disposed at the end of the opening and closing passage 5214 away from the fluid passage 5212. Valve 52 also includes a valve stem 525 and an actuator 526. One end of the valve stem 525 is located outside the valve cover 524 and is connected to the actuator 526. The other end of the valve stem 525 passes through the valve cover 524 and is telescopically installed into the fluid passage 5212 by the opening and closing passage 5214. The opening and closing assembly is connected to the other end of the valve stem 525 and can reciprocate along the axial direction of the opening and closing passage 5214 when the valve stem 525 extends or retracts, so as to squeeze or release the hose 56. The actuator 526 is used to control the extension and retraction of the valve stem 525.

[0255] The opening and closing assembly is a gate assembly that can slide back and forth in the fluid channel 5212 and along the axial direction of the opening and closing channel 5214. The gate assembly includes a gate 522 and a wear-resistant hard rubber layer 523. One end of the gate 522 is connected to the end of the valve stem 525 that extends into the fluid channel 5212. The other end of the gate 522 is semi-arc. The wear-resistant hard rubber layer 523 is disposed on the outer surface of the gate 522 near the hose 56. The gate assembly can squeeze the hose 46 and make the inner walls of the hose 46 fit tightly together to form a static seal through reciprocating motion. The gate assembly can also release the hose 56 through reciprocating motion.

[0256] A stem static seal device 527 is provided on the valve stem 525. The stem static seal device 527 is located inside the valve seat 521. The valve cover 524 is provided with a through hole for installing the valve stem 525. The stem static seal device 527 can seal the end of the through hole near the valve seat 521 to prevent the medium from leaking out of the valve seat 521 through the through hole. The material of the stem static seal device 527 is the same as that of the hose 56. The stem static seal device 527 is a telescopic corrugated tubular structure.

[0257] In this embodiment, the gate 522 can be used to seal and open the hose 56. The wear-resistant hard rubber layer 523 can further compress the hose, thereby sealing the pressure-resistant blocking element 54 and ensuring that there is no internal leakage after the valve 52 is closed. At the same time, in this embodiment, the structure of the gate 522 can be reasonably set so that the gate 522 can fit closely to the inner wall of the valve seat 521 when closed, without leaving gaps. This allows the gate 522 to adjust the opening size of the fluid passage 5212 and / or control the opening and closing of the fluid passage 5212. Thus, the gate 522 is not only a structure used to compress the hose 56 to form a static seal or release the hose 56, but it can also realize the normal opening and closing of the valve 52. The role of the hose 56 is only to further ensure that there is no internal leakage after the gate 522 is closed through static sealing, thereby achieving true shielding inside the valve and thus achieving zero leakage. Of course, in other solutions, the gate 522 may not be used to realize the normal opening and closing of the valve 52; it may simply be a structure used to squeeze or release the hose 56.

[0258] In the specific design of the third valve, such as Figures 18 to 20 As shown, the pressure-resistant barrier 64 is a tubular structure with one end open and the other end curved and gradually tapering inward; the inlet end of the hose 66 is sleeved and installed on the end of the pressure-resistant barrier 64 away from the inlet of the fluid channel 6212, and the outlet end of the hose 66 is provided with metal strips or reinforcing fabric ribs.

[0259] The valve is designated as valve 52. In valve 52, the housing assembly consists of a valve seat 621 and a valve cover 623. A fluid passage 6212 is disposed on the valve seat 621, which also has an opening / closing passage 6214 connected to the fluid passage 6212. The valve cover 623 is disposed at the end of the opening / closing passage 6214 away from the fluid passage 6212. Valve 62 also includes an actuator 625 and two valve stems 624. One end of each valve stem 624 is located outside the valve cover 623 and connected to the actuator 625. The other ends of each valve stem 624 pass through the valve cover 623. The cover 623 extends into the fluid channel 6212 through the opening and closing channel 6214. Each of the two valve stems 624 is provided with a valve disc 622 at one end of its extension into the fluid channel 6212. The two valve discs 622 can rotate in both directions under the action of the two valve stems 624. When the two valve discs 622 rotate in the forward direction, they can squeeze from both sides of the hose 66 toward the center of the hose 66 so that the inner walls of the hose 66 can fit tightly together to form a static seal. When the two valve discs 622 rotate in the reverse direction, they can loosen the hose 66 so that the hose 66 can be opened.

[0260] Valve 62 also includes rack 627 and two gears 628. The two gears 628 mesh with the two sides of rack 627 respectively. Rack 627 is connected to actuator 625 and can slide under the action of actuator 625. The ends of the two valve stems 624 that extend out of valve cover 623 are each connected to a gear 628.

[0261] A stem static seal device 626 is provided on the valve stem 624. The stem static seal device 626 is located inside the valve seat 621. The valve cover 623 is provided with a through hole for installing the valve stem 624. The stem static seal device 626 can seal the end of the through hole near the valve seat 621 to prevent the medium from leaking out of the valve seat 621 through the through hole. The material of the stem static seal device 626 is the same as that of the hose 66. The stem static seal device 626 is a telescopic corrugated tubular structure.

[0262] In this implementation, the combined structure can be used in structures such as water pumps. When the water pump or other structure stops working, the reduced inlet pressure is converted into an electrical signal and transmitted to the actuator 625. The piston rod of the actuator 625 drives the rack 627 via the support, which in turn drives the gears 628 at the ends of the valve stems 624 on both sides to rotate. Each valve stem 624 is equipped with a valve disc 622, which compresses the hose 66 towards the center, causing the inner wall of the hose 66 to press tightly, forming a seal and preventing backflow of the medium. When the water pump restarts, the valve discs 622 open on both sides of the hose 66, thus clearing away the deposited medium. This device has a compact structure and is suitable for installations with limited space. In the third combined valve, the opening and closing assembly consists of two valve stems 624 and two valve discs 622, and the two valve discs 622 constitute the opening and closing assembly of the third combined valve.

[0263] in, Figure 19In the diagram, the dashed line indicates the closed position when valve disc 622 compresses hose 66. Figure 19 In the middle, valve disc 622 is in the open state.

[0264] In a preferred embodiment, valve 62 includes: valve seat 621, valve cover 623, valve stem 624, valve disc 622, stem static sealing device 626, guide groove, rack 627, actuator 625, and gear 628. Valve seat 621 and valve cover 623 are combined to form a housing assembly. Pressure-resistant blocking member 64 is designed in a herringbone arc shape. The opening end of hose 66 is covered with a metal strip. The first end of valve stem 624 is connected to rack 627, and gears 628 are connected to the left and right sides of rack 627 respectively. The bottom of rack 627 is connected to guide groove. Valve stem 624 is also connected to stem static sealing device 626, and the second end of valve stem 624 is connected to valve disc 622. The actuator 625... The plug rod drives the rack 627 via the support, which in turn drives the gears 628 at the ends of the valve stems 624 on both sides to rotate. Each valve stem 624 is equipped with a valve disc 622, which compresses the hose 66 towards the center, causing the inner wall of the hose 66 to press tightly against the end face of the pressure-resistant blocking member 64. Under the action of the metal strip at the hose 66 opening, a regular sealing surface is formed, blocking the flow of the medium. This device has a double valve stem and double valve disc structure. During the opening and closing of the valve discs 622, the medium deposited at the bottom can be actively cleaned. The device transmits torque by driving the gears 628 on both sides via the rack 627. The flow rate and other parameters can be controlled by adjusting the position of the rack 627. The valve seat 621 has no sealing seat, so the power of the selected actuator 625 can be reduced.

[0265] In a specific scheme of the water supply and drainage control device provided in the fourth aspect (not shown in the figure), the pressure-resistant blocking component and the hose are connected in the fluid channel to form an integrated duckbill valve structure (not shown in the figure), and the inlet of the integrated duckbill valve structure is set close to the inlet of the fluid channel, and the outlet of the integrated duckbill valve structure is set close to the outlet of the fluid channel.

[0266] The housing assembly consists of a valve seat and a valve cover. A fluid passage is located on the valve seat, which also has an opening and closing channel communicating with the fluid passage. The valve cover is located at the end of the opening and closing channel away from the fluid passage. The valve also includes an actuator and two valve stems. One end of each valve stem is located outside the valve cover and connected to the actuator. The other end of each valve stem passes through the valve cover and extends into the fluid passage through the opening and closing channel. Each valve stem has a valve disc at the end extending into the fluid passage. The two valve discs can rotate in both directions under the action of the two valve stems. When the two valve discs rotate in the forward direction, they can squeeze the integrated duckbill valve structure from both sides toward the center of the integrated duckbill valve structure to form a seal. When the two valve discs rotate in the reverse direction, they can loosen the integrated duckbill valve structure so that it can open under the inlet pressure of the fluid passage.

[0267] In this embodiment, the pressure-resistant barrier and the hose are connected within the fluid channel to form an integrated duckbill valve structure. The inlet of the integrated duckbill valve structure is located near the inlet of the fluid channel, and the outlet of the integrated duckbill valve structure is located near the outlet of the fluid channel. That is, in this embodiment, there are no separately provided pressure-resistant barrier and hose; instead, there is an integrated duckbill valve structure. The valve disc can squeeze the integrated duckbill valve structure from both sides towards the middle to seal it. After the valve disc opens, the integrated duckbill valve structure automatically opens to allow the medium to pass through. With this structure, when the medium passes through, the valve port of the integrated duckbill valve structure is forced open; when no medium passes through, the valve port naturally closes, thus enabling the integrated duckbill valve structure to seal itself. However, the drawback of the integrated duckbill valve structure is that when it is automatically closed, if the outlet pressure is high, there will be pressure pushing the integrated duckbill valve structure, which will deform the valve port and may open. By adding valve discs that can be opened and closed on both sides of the integrated duckbill valve structure, the valve port of the integrated duckbill valve structure can be closed tightly.

[0268] More preferably, the valve further includes a rack and two gears, the two gears meshing with the two sides of the rack respectively, the rack being connected to the actuator and able to slide under the action of the actuator, and the ends of the two valve stems extending outside the valve cover being connected to a gear;

[0269] More preferably, the valve stem is provided with a stem static seal device located inside the valve seat. The valve cover is provided with a through hole for installing the valve stem. The stem static seal device can seal the end of the through hole near the valve seat to prevent the medium from leaking out of the valve seat through the through hole. The material of the stem static seal device is the same as that of the hose. The stem static seal device is a telescopic corrugated tubular structure.

[0270] Example 7

[0271] like Figure 21 As shown, the fifth aspect of the present invention provides a water supply and drainage control device, comprising:

[0272] Valve 72 includes a housing assembly consisting of an opening and closing component, a valve seat 721, and a valve cover 723. A fluid passage 7212 is provided inside the housing assembly. The opening and closing component is movably installed inside the fluid passage 7212 and is used to adjust the opening size of the fluid passage 7212 and / or control the opening and closing of the fluid passage 7212.

[0273] A pressure-resistant barrier 74 is installed inside the fluid channel 7212. The pressure-resistant barrier 74 is provided with at least one water passage, and / or at least one water passage is formed between the pressure-resistant barrier 74 and the inner wall of the fluid channel 7212.

[0274] The pressure-resistant barrier 74 is disposed within the fluid channel 7212 near the inlet of the fluid channel 7212, and the opening and closing component is disposed on the outlet side of the pressure-resistant barrier 74; or the pressure-resistant barrier 74 is disposed within the fluid channel 7212 near the outlet of the fluid channel 7212, and the opening and closing component is disposed on the inlet side of the pressure-resistant barrier 74.

[0275] The hose 76 is located inside the fluid channel 7212, on the outlet side of the pressure-resistant barrier 74, and is sealed to the pressure-resistant barrier 74. All water passages are sealed to the hose 76. The medium entering from the inlet of the fluid channel 7212 can flow out through the hose 76 after passing through at least one water passage. The hose 76 is a hose with fabric.

[0276] Wherein, when the pressure inside the hose 76 is less than the pressure outside the hose 76, at least part of the inner wall of the hose 76 can be tightly pressed together to form a static seal under the action of external atmospheric pressure and / or the medium pressure outside the hose 76, and the opening and closing component can squeeze the hose 76 and make the inner wall of the hose 76 tightly pressed together to form a static seal when the fluid passage 7212 is disconnected.

[0277] The water supply and drainage device provided by the embodiment of the present invention is a combination structure of valve 72, pressure-resistant blocking member 74, and hose 76. In this structure, valve 72 itself is designed with an opening and closing component that can close and open fluid passage 7212. At the same time, the opening and closing component can compress hose 76, thereby assisting hose 76 in achieving static sealing. In this way, the first sealing of the fluid can be achieved under the action of the opening and closing component, and the internal shielding seal can be achieved under the action of the static seal formed by hose 76. This achieves double sealing, thus ensuring the water supply and drainage device's ability to cut off the medium and ensuring that the water supply and drainage device will not have internal leakage problems.

[0278] Preferably, a portion of the hose 76 is sealed to the pressure-resistant barrier 74, while the remaining portion of the hose 76 is in a non-fixed state.

[0279] In a specific scheme, such as Figure 21As shown, the housing assembly includes a valve seat 721 and a valve cover 723. A fluid passage 7212 is disposed on the valve seat 721, and the valve seat 721 also has an opening / closing passage 7214 connected to the fluid passage 7212. The valve cover 723 is disposed at the end of the opening / closing passage 7214 away from the fluid passage 7212. The valve also includes a valve stem 724 and an actuator 725. One end of the valve stem 724 is located outside the valve cover 723 and connected to the actuator 725. The other end of the valve stem 724 passes through the valve cover 723 and is connected to the opening / closing passage 7214. 14 extends into the fluid passage 7212. The opening and closing assembly is a butterfly plate 722 that is rotatably installed in the fluid passage 7212 and connected to the valve stem 724. The valve stem 724 can rotate relative to the valve seat 721 and drive the butterfly plate 722 to rotate. When the butterfly plate 722 rotates, it can adjust the opening size of the fluid passage 7212 and / or control the opening and closing of the fluid passage 7212. The butterfly plate 722 can also squeeze the hose 76 and make the inner walls of the hose 76 fit tightly together to form a static seal when the fluid passage 7212 is disconnected.

[0280] A stem static seal device is provided on the valve stem 724. The stem static seal device is located inside the valve seat 721. The valve cover 723 is provided with a through hole for installing the valve stem 724. The stem static seal device is used to seal the end of the through hole near the valve seat 721 to prevent the medium from leaking out of the valve seat 721 through the through hole. The material of the stem static seal device is the same as that of the hose 76. The stem static seal device is a telescopic corrugated tubular structure.

[0281] In this embodiment, the pressure-resistant blocking component 74, the hose 76, and the butterfly valve are combined, so that the water supply and drainage control device has all the functions of the butterfly valve, and can also achieve effective internal sealing and shielding of the water supply and drainage control device through the static seal formed by the internal fit of the hose 76, ensuring that there is no internal leakage problem after the water supply and drainage control device is closed. Specifically, this device can be installed at the water pump outlet. When the water pump stops working, it transmits a signal to the actuator 725. The actuator 725 drives the valve stem 724 to rotate 90°, and the valve stem 724 drives the butterfly plate 722 to rotate 90° to close the cross section. At the same time, under the action of internal negative pressure, the inner wall of the hose 76 is tightly fitted to form a static seal, thus completing the internal sealing and shielding of the valve. In this structure, the sealing of the butterfly plate 722 plays an auxiliary role, and there is no need to set a sealing seat. Therefore, the power of the actuator 725 can be appropriately reduced, which can achieve the effect of energy saving and consumption reduction.

[0282] In another specific implementation scheme of Implementation 6, the structure of the water supply and drainage control device can be as follows: Figures 14 to 16 In this structure, the gate of valve 52 is required to be able to open and disconnect the fluid passage 5212. This structure can be specifically referred to in previous embodiments, and will not be repeated here.

[0283] Example 8

[0284] like Figures 22 to 25 As shown, an embodiment of the sixth aspect of the present invention provides a water supply and drainage control device, comprising:

[0285] Valve 82 includes a housing assembly and an opening / closing assembly. The housing assembly is provided with a fluid passage 8212. The opening / closing assembly is slidably installed in the fluid passage 8212 along the radial direction of the fluid passage 8212 and is used to adjust the opening size of the fluid passage 8212 and / or control the opening and closing of the fluid passage 8212.

[0286] A pressure-resistant barrier 86 is installed inside the fluid channel 8212, located between the opening and closing assembly and the inlet of the fluid channel 8212, or between the opening and closing assembly and the outlet of the fluid channel 8212. The outer ring of the pressure-resistant barrier 86 is sealed to the inner wall of the fluid channel 8212. At least one water passage is provided on the pressure-resistant barrier 86, and / or at least one water passage is formed between the pressure-resistant barrier 86 and the inner wall of the fluid channel 8212.

[0287] Among them, an airtight pressure-bearing soft cloth 84 is provided on the side of the opening and closing component near the pressure-resistant barrier 86. When the opening and closing component disconnects the fluid channel 8212, the airtight pressure-bearing soft cloth 84 can seal and wrap the periphery of the pressure-resistant barrier 86 under the action of the medium pressure in the fluid channel 8212, so as to achieve the sealing of the pressure-resistant barrier 86 by the airtight pressure-bearing soft cloth 84.

[0288] The water supply and drainage control device provided according to an embodiment of the present invention includes a valve 82 and a pressure-resistant blocking member 86. The valve includes an opening and closing assembly, on which an airtight pressure-bearing soft cloth 84 is provided, which can form a sealing pair with the pressure-bearing blocking member 86. This structure can realize the flow and cut-off control of the medium through the opening and closing assembly in the valve 82. At the same time, since the airtight pressure-bearing soft cloth 84 can form a sealing pair with the pressure-bearing blocking member 86, the airtight pressure-bearing soft cloth 84 can further improve the sealing performance of the opening and closing assembly, so that the valve 82 has the characteristic of no internal leakage when shut off, effectively solving the problem of low valve sealing performance and easy medium leakage in the prior art. The specific structure of the valve 82 can be set as a ball valve, butterfly valve, etc., according to actual needs. The valve 82 itself can be used as a regulating valve, as well as a shut-off valve and a check valve. Meanwhile, in this structure, the pressure-resistant blocking element 86 is located at the outlet of the valve 82, that is, the pressure-resistant blocking element 86 is located on the rear side of the opening and closing assembly. The opening and closing assembly can directly cut off the inlet water flow of the fluid channel 8212 through the airtight pressure-resistant soft cloth 84. After the airtight pressure-resistant soft cloth 84 cuts off the inlet water flow of the fluid channel 8212, the inlet pressure of the fluid channel 8212 is greater than the outlet pressure of the fluid channel 8212. This creates a pressure difference on both sides of the airtight pressure-resistant soft cloth 84, allowing the airtight pressure-resistant soft cloth 84 to be pressed against the pressure-resistant blocking element 86 under the medium pressure at the inlet of the fluid channel 8212. Thus, when the opening and closing assembly is closed, the airtight pressure-resistant soft cloth 84 can further form a sealing structure with the pressure-resistant blocking element 86 with better sealing effect by utilizing the medium pressure in the fluid channel 8212.

[0289] In a specific scheme, such as Figures 22 to 25 As shown, the housing assembly includes a valve seat 821 and a valve cover 822. A fluid passage 8212 is disposed on the valve seat 821. The valve seat 821 is also provided with an opening and closing passage 8214 communicating with the fluid passage 8212. The valve cover 822 is disposed at the end of the opening and closing passage 8214 away from the fluid passage 8212. The valve 82 also includes a valve stem 823 and an actuator 828. One end of the valve stem 823 is located outside the valve cover 822 and is connected to the actuator 828. The other end of the valve stem 823 passes through the valve cover 822 and is telescopically installed into the fluid passage 8212 by the opening and closing passage 8214. The opening and closing assembly is connected to the other end of the valve stem 823 and can reciprocate along the axial direction of the opening and closing passage 8214 when the valve stem 823 extends or retracts, so as to adjust the opening size of the fluid passage 8212 and / or control the opening and closing of the fluid passage 8212. The actuator 828 is used to control the extension and retraction of the valve stem 823.

[0290] The opening and closing assembly includes a frame assembly connected to one end of the valve stem 823 that extends into the fluid passage 8212, an inner telescopic rod 824, and an airtight pressure-bearing soft cloth 84. The airtight pressure-bearing soft cloth 84 seals and covers the side of the frame assembly near the pressure-resistant barrier 86. The frame assembly includes a frame 827 and a pre-release pressure rod 826. One end of the frame 827 is connected to the valve stem 823, and the other end of the frame 827 is open. The pre-release pressure rod 826 is installed at the opening at the other end of the frame 827 and is connected to the inner telescopic rod 824. The pre-release pressure rod 826 can pull the airtight pressure-bearing soft cloth 84 toward the opening and closing passage 8214 under the action of the inner telescopic rod 824.

[0291] When the inlet pressure of the fluid channel 8212 decreases, causing the actuator 828 to slide the opening and closing assembly closer to the bottom side wall of the fluid channel 8212, the airtight pressure-bearing soft cloth 84 can seal and wrap around the pressure-resistant barrier 86 under the pressure of the medium inside the fluid channel 8212, thus achieving a seal between the airtight pressure-bearing soft cloth 84 and the pressure-resistant barrier 86. During the process of the actuator 828 opening the fluid channel 8212, the valve stem 823... Under the action of the actuator 828, the airtight pressure-bearing soft cloth 84 is first pulled towards the opening and closing channel 8214 via the inner telescopic rod 824 and the pre-release pressure rod 826. After the airtight pressure-bearing soft cloth 84 is pulled to the preset height, the fluid channel 8212 is depressurized through the outlet of the fluid channel 8212. After the fluid channel 8212 is depressurized for a preset time, the valve stem 823 is gradually raised by the frame assembly under the action of the actuator 828, and the fluid channel 8212 is gradually opened.

[0292] In these embodiments, the housing assembly is composed of a valve seat 821 and a valve cover 822. The actuator 828 preferably drives the valve stem 823 to open and close up and down through a T-shaped threaded pair. The valve stem 823 passes through the through hole in the center of the valve cover 822. Preferably, a rod static sealing device 825 is provided around the valve stem 823 to prevent the medium from leaking out from the inner cavity of the valve seat 821 through the central hole of the valve cover 822. The valve stem 823 is connected to an inner telescopic rod 824 and a hollow frame assembly in the middle. The frame assembly includes a frame 827 and a pre-release pressure rod 826. The frame 827 and the pre-release pressure rod 826 are installed in the same plane. One end of the frame 827 is connected to the valve stem 823, and the other end of the frame 827 is open. The pre-release pressure rod 826 is installed at the opening at the other end of the frame 827. Specifically, the frame 827 can be a U-shaped or C-shaped structure. Of course, the frame 827 can also be a crossbeam. In this case, the frame assembly consists of the crossbeam connected by the inner telescopic rod 824 and the pre-release pressure rod 826. The pre-release pressure rod 826 is preferably symmetrically arranged about the inner telescopic rod 824 and connected to the inner telescopic rod 824. The airtight pressure-bearing soft cloth 84 is preferably sealed and covered on the side of the frame assembly near the pressure-resistant barrier 86 by processes such as low-temperature bonding and high-temperature vulcanization. This structure, such as Figure 24 As shown, when the opening and closing assembly, composed of frame 827, inner telescopic rod 824, and airtight pressure-bearing soft cloth 84, moves rapidly downward along guide groove 8216 via guide slider 8272, for example, when the inlet pressure of valve seat 821 decreases, the airtight pressure-bearing soft cloth 84 can seal and wrap around pressure-resistant barrier 86, thereby blocking the inlet water flow of fluid channel 8212. After the airtight pressure-bearing soft cloth 84 cuts off the inlet water flow of fluid channel 8212, the inlet pressure of fluid channel 8212 is greater than the outlet pressure of fluid channel 8212. Therefore, the airtight pressure-bearing soft cloth 84 can be pressed against pressure-resistant barrier 86 under the inlet pressure of fluid channel 8212. In this way, when the opening and closing assembly is closed, the airtight pressure-bearing soft cloth 84 can seal and wrap around the periphery of pressure-resistant barrier 86 under the action of medium pressure in fluid channel 8212, so as to achieve the sealing of pressure-resistant barrier 86 by airtight pressure-bearing soft cloth 84, while the limit blocks 829 at both ends limit the movement. When the inlet pressure of valve seat 821 gradually increases, requiring valve 82 to be opened, such as... Figure 25As shown, the valve stem 823 pulls the inner telescopic rod 824, causing the pressure release rod 826 to deform upwards, and the lower edge of the airtight pressure-bearing soft cloth 84 is pulled upwards to a preset height, so that a small opening can be made at the bottom of the frame 827. After the small opening at the bottom of the frame 827, part of the pressure at the inlet of the fluid channel 8212 will be released through the outlet of the fluid channel 8212. In this way, the fluid channel 8212 achieves partial pressure relief between the fully open and closed components. After the pressure relief is delayed for a preset time, the pressure difference between the inlet and outlet of the valve 82 decreases. Therefore, after the pressure relief, the force of the medium acting on the opening and closing components composed of the frame 827, the inner telescopic rod 824 and the airtight pressure-bearing soft cloth 84 is much less than the force of the medium acting on the opening and closing components before the pressure relief. This reduces the total force on the valve stem 823 and the opening and closing components, thereby reducing the thrust of the actuator 828 required to open the valve 82, making the valve 82 easier to open. Subsequently, the actuator 828 can be used to lift the entire opening and closing assembly further upwards until the opening and closing assembly fully opens the fluid passage 8212. This structure, by releasing pressure in advance through the pressure release rod 826, can reduce the force required to open the valve 82, thus enabling the overall structure of the valve 82 to be smaller and lighter, while reducing the manufacturing cost of the valve 82, improving the economic efficiency of the valve, and achieving the purpose of energy saving and consumption reduction.

[0293] in, Figure 24 and Figure 25 The arrows indicate the direction of movement of the frame components and the airtight pressure-bearing soft cloth 84.

[0294] Preferably, the actuator 828 drives the valve stem 823 to extend and retract via a T-shaped threaded pair.

[0295] Preferably, a stem static seal device 825 is provided on the valve stem 823. The stem static seal device 825 is installed inside the valve seat 821. The valve cover 822 is provided with a through hole for installing the valve stem 823. The stem static seal device 825 can seal the end of the through hole near the valve seat 821 to prevent the medium from leaking out of the valve seat 821 through the through hole. The material of the stem static seal device 825 is the same as the material of the airtight pressure-bearing soft cloth 84. The stem static seal device 825 is a telescopic corrugated tubular structure.

[0296] Preferably, the airtight pressure-bearing soft cloth 84 is sealed and covered on the side of the annular composite frame near the pressure-resistant blocking component 86 by low-temperature bonding and high-temperature vulcanization process.

[0297] Preferably, the airtight pressure-bearing soft cloth 84 is made of an airtight fabric material, for example, the airtight pressure-bearing soft cloth 84 can be made of fire-fighting cloth.

[0298] In one specific embodiment, such as Figure 24As shown, the bottom edge of the airtight pressure-bearing soft cloth 84 is covered with the pre-release pressure rod 826, and the upper edge of the airtight pressure-bearing soft cloth 84 is covered with the frame 827. After the airtight pressure-bearing soft cloth 84 is lifted to the preset height, the pre-release pressure rod 826 can also drive the lower edge of the airtight pressure-bearing soft cloth 84 to move upward relative to the frame 827 and form folds under the action of the inner telescopic rod 824, and the middle part of the airtight pressure-bearing soft cloth 84 is in a non-tensioned state.

[0299] In this embodiment, the airtight pressure-bearing soft cloth 84 is only mounted on the pre-release pressure rod 826 with its bottom edge covered, and connected to the frame 827 with its top edge. However, the left and right sides of the airtight pressure-bearing soft cloth 84 are not fixed. Simultaneously, after the airtight pressure-bearing soft cloth 84 is pulled to a preset height, the pre-release pressure rod 826 can also, under the action of the inner telescopic rod 824, cause the lower edge of the airtight pressure-bearing soft cloth 84 to move upward relative to the frame 827 and form folds. That is to say, after the fluid channel 8212 is depressurized, the lower edge of the airtight pressure-bearing soft cloth 84 can also be pulled upward relative to the frame 827 under the action of the pre-release pressure rod 826 and the inner telescopic rod 824. This allows the lower edge of the airtight pressure-bearing soft cloth 84 to be rolled up relative to the frame 827, thus opening the frame 827. This structure allows the airtight pressure-bearing soft cloth 84 to be opened like a venetian blind. After depressurization, when valve 82 needs to be fully opened, the frame assembly and the airtight pressure-bearing soft cloth 84 can be moved upwards as a whole a certain distance. Then, the end of the airtight pressure-bearing soft cloth 84 near the pre-pressure release rod is moved upwards to form a pleated layer. Compared with the scheme where the airtight pressure-bearing soft cloth 84 is fixed on all four sides, this structure requires the frame assembly to move upwards a shorter distance to fully open valve 82, thus reducing the space of the valve cavity and the volume of valve 82. The middle part of the airtight pressure-bearing soft cloth 84 is in a non-tensioned state, allowing some soft cloth to accumulate in the middle, increasing the area of ​​the airtight pressure-bearing soft cloth 84 and improving the sealing effect when the airtight pressure-bearing soft cloth 84 is squeezed against the pressure-resistant barrier 86 to form a seal.

[0300] In another specific embodiment, such as Figure 25 As shown, the bottom edge of the airtight pressure-bearing soft cloth 84 is covered with the pre-release pressure rod 826, the remaining edges of the airtight pressure-bearing soft cloth 84 are covered with the frame 827, and the middle part of the airtight pressure-bearing soft cloth 84 is in a non-tensioned state.

[0301] In this embodiment, the bottom edge of the airtight pressure-bearing soft cloth 84 covers the pre-release pressure rod 826, while the remaining edges are covered and installed on the frame 827, thus fixing the airtight pressure-bearing soft cloth 84 around its perimeter. Specifically, the frame 827 can be configured as a U-shape or C-shape, with the pre-release pressure rod 826 positioned at the opening of the U-shape or C-shape, so that the frame 827 and the pre-release pressure rod 826 can form a ring frame structure, thereby fixing the airtight pressure-bearing soft cloth 84 around its perimeter through the ring frame structure. With this structure, the airtight pressure-bearing soft cloth 84 can only be slightly lifted to a certain height when the pre-release pressure rod 826 deforms upwards, thereby allowing the fluid channel 8212 to release pressure first. After the pressure is released, the frame assembly and the airtight pressure-bearing soft cloth 84 move upwards as a whole, thus fully opening the fluid channel 8212. This structure requires a relatively large valve cavity space because the frame assembly and the airtight pressure-bearing soft cloth 84 need to move upwards as a whole. The middle part of the airtight pressure-bearing soft cloth 84 is in a non-tensioned state, allowing some soft cloth to accumulate in the middle, thus increasing the area of ​​the airtight pressure-bearing soft cloth 84 and improving the sealing effect when it is compressed and forms a seal with the pressure-resistant barrier 86.

[0302] Preferably, such as Figure 24 and Figure 25 As shown, the pre-release pressure rod 826 is a single rod, which includes two interconnected segmented rods.

[0303] Preferably, such as Figure 24 and Figure 25 As shown, the pre-release pressure rod 826 is an elastic rod. Under the action of the inner telescopic rod 824, the pre-release pressure rod 826 can deform towards the opening / closing channel 8214 to achieve the lifting of the airtight pressure-bearing soft cloth 84. Among these, in... Figure 25 In the image, the position of the pressure release lever 826 after deformation is shown by a dashed line.

[0304] Preferably, the pre-release pressure rod 826 is a carbon fiber rod because carbon fiber rods have the advantages of high strength and easy deformation. Of course, the pre-release pressure rod 826 can also be a non-carbon fiber rod.

[0305] Example 9

[0306] like Figures 26 to 28 As shown, an embodiment of the seventh aspect of the present invention provides a water supply and drainage control device, including an interception device 92, a pressure-resistant blocking member 94, and a hose 96, specifically:

[0307] The pressure-resistant barrier 94 is sealed and installed inside the interception dam 98, near the inlet of the interception dam 98;

[0308] One end of the hose 96 is airtightly installed on the pressure-resistant barrier 94 near the outlet of the interception dam 98, or the hose 96 is directly airtightly installed at the outlet of the interception dam 98, and the other end of the hose 96 extends out of the outlet of the interception dam 98 by a predetermined distance. The hose 96 is a hose with fabric, and the other end of the hose 96 is preferably in a non-fixed state. Of course, it can also be in a partially fixed state. When the pressure inside the hose 96 is less than the pressure outside the hose 96, at least part of the inner wall of the hose 96 can be tightly pressed together and form a static seal under the action of the medium pressure outside the hose 96.

[0309] The interception device 92 is installed at the inlet of the interception dam 98. The interception device 92 includes a housing assembly 921 and an opening and closing assembly mounted on the housing assembly 921, as well as an actuator 923 connected to the opening and closing assembly. The opening and closing assembly is slidably installed at the inlet of the interception dam 98 in the vertical direction to adjust the opening size of the inlet of the interception dam 98 and / or control the opening and closing of the inlet of the interception dam 98. The actuator 923 is used to drive the opening and closing assembly to slide up and down so that the opening and closing assembly can adjust the opening size of the inlet of the interception dam 98 and / or control the opening and closing of the inlet of the interception dam 98.

[0310] Among them, an airtight pressure-bearing soft cloth 924 is provided on the side of the opening and closing component close to the pressure-resistant barrier 94. When the opening and closing component closes the inlet of the interception dam 98, the airtight pressure-bearing soft cloth 924 can seal and wrap the periphery of the pressure-bearing barrier 94 under the action of the medium pressure in the interception dam 98, so as to achieve the sealing of the pressure-bearing barrier 94 by the airtight pressure-bearing soft cloth 924.

[0311] The opening and closing assembly includes a movable rod 925, one end of which is installed inside the housing assembly 921 and connected to the actuator 923. The other end of the movable rod 925 is telescopically mounted to the inlet of the interception dam 98. The opening and closing assembly also includes a frame assembly, an inner telescopic rod 926, and an airtight pressure-bearing soft cloth 924, which are connected to the end of the movable rod 925 that extends into the inlet of the interception dam 98. The airtight pressure-bearing soft cloth 924 seals and covers the side of the frame assembly near the pressure-resistant barrier 94. The frame assembly includes a frame 922 and a pre-release pressure rod 927. The upper end of the frame 922 is connected to the movable rod 925, and the lower end of the frame 922 is open. The pre-release pressure rod 927 is installed at the opening at the lower end of the frame 922 and is connected to the inner telescopic rod 926. The pre-release pressure rod 927 can lift the airtight pressure-bearing soft cloth 924 upward under the action of the inner telescopic rod 926.

[0312] When the inlet pressure of the intercepting dam 98 decreases, causing the actuator 923 to slide downwards and close the inlet of the intercepting dam 98, the airtight pressure-bearing soft cloth 924 can seal and wrap around the pressure-resistant blocking member 94 under the pressure of the medium inside the intercepting dam 98, thus achieving a seal between the airtight pressure-bearing soft cloth 924 and the pressure-resistant blocking member 94. During the process of the actuator 923 opening the inlet of the intercepting dam 98, for example, when the inlet pressure of the intercepting dam 98 increases, the movable rod 925, under the action of the actuator 923, first lifts the airtight pressure-bearing soft cloth 924 upwards through the inner telescopic rod 926 and the pre-release pressure rod 927. After the airtight pressure-bearing soft cloth 924 is lifted to a preset height, the intercepting dam 98 releases pressure through its outlet. After a preset pressure release time, the movable rod 925, under the action of the actuator 923, gradually raises the airtight pressure-bearing soft cloth 924 through the frame assembly, thus opening the inlet of the intercepting dam 98.

[0313] According to an embodiment of the present invention, a water supply and drainage control device is provided for a river interception dam 98 to realize the opening and closing of the interception dam 98. During installation, a pressure-resistant blocking member 94 is installed inside the interception dam 98, near the inlet of the interception dam 98, and a hose 96 is installed on the pressure-resistant blocking member 94 and extends a certain length from the outlet of the interception dam 98. An interception device 92 is installed at the inlet of the interception dam 98 to realize the opening and closing of the interception dam 98 through an opening and closing assembly. Specifically, the interception device 92 includes an opening and closing assembly, on which an airtight pressure-bearing soft cloth 924 is provided that can form a sealing pair with the pressure-resistant blocking member 94. This structure enables flow and cut-off control of the medium through the opening and closing components within the interception device 92. Furthermore, since the airtight pressure-bearing soft cloth 924 forms a sealing pair with the pressure-resistant blocking component 94, the airtight pressure-bearing soft cloth 924 further improves the sealing performance of the opening and closing components. This results in the interception device 92 having no internal leakage when intercepting the interception dam 98, effectively solving the problem of low sealing performance and easy medium leakage in existing interception devices 92. Meanwhile, in this structure, the pressure-resistant blocking element 94 is located at the inlet of the interception device 92. The opening and closing assembly can directly cut off the water flow at the inlet of the interception dam 98 through the airtight pressure-resistant soft cloth 924. After the airtight pressure-resistant soft cloth 924 cuts off the water flow at the inlet of the interception dam 98, the pressure at the inlet of the interception dam 98 is greater than the pressure at the outlet of the interception dam 98. This creates a pressure difference on both sides of the airtight pressure-resistant soft cloth 924, allowing it to be pressed against the pressure-resistant blocking element 94 under the pressure of the water flow at the inlet of the interception dam 98. Thus, when the opening and closing assembly is closed, the airtight pressure-resistant soft cloth 924 can further utilize the medium pressure within the interception dam 98 to form a better sealing structure with the pressure-resistant blocking element 94. With this structure, when no siltation is required and only water flow needs to be intercepted, the airtight pressure-resistant soft cloth 924 can be used to press against the pressure-resistant blocking element 94 to form a seal, thereby enabling the interception device 92 to open and close the interception dam 98. When river dredging is required, the upstream intercepting dam 98 can be closed first to stop the upstream water flow. Then, the actuator 923 can be operated to close the downstream intercepting dam 98, cutting off the downstream water flow. Afterwards, a water pump can be used to drain the water between the two intercepting dams 98, allowing for river maintenance or dredging. However, after draining the water between the two intercepting dams 98, the downstream water pressure will be greater than the upstream water pressure, posing a risk of downstream water being drawn back into the upstream. The flexible hose 96 is designed to be flattened by the downstream water pressure, allowing its inner walls to fit tightly together to form a static seal. This allows the flexible hose 96 to seal the intercepting dam 98 during dredging, preventing downstream water from flowing back upstream.After the river channel repair or dredging is completed, the actuator 923 can be restarted to open the opening and closing components, release water upstream, and allow the river to flow normally.

[0314] Meanwhile, the opening and closing assembly includes a movable rod 925, with an inner telescopic rod 926 and a hollow frame assembly connected to the end of the movable rod 925. The frame assembly includes a frame 922 and a pre-release pressure rod 927, which are installed in the same plane. One end of the frame 922 is connected to the movable rod 925, and the other end of the frame 922 is open. The pre-release pressure rod 927 is installed at the opening at the other end of the frame 922. Specifically, the frame 922 can be a U-shaped or C-shaped structure. Of course, the frame 922 can also be a crossbeam. In this case, the frame assembly consists of the crossbeam connected by the inner telescopic rod 926 and the pre-release pressure rod 927. Preferably, the pre-release pressure rod 927 is symmetrically arranged about the inner telescopic rod 926 and connected to the inner telescopic rod 926. The airtight pressure-bearing soft cloth 924 is preferably sealed and covered on the side of the frame assembly near the pressure-resistant blocking member 94 by processes such as low-temperature bonding and high-temperature vulcanization. In this structure, when the interceptor 92 needs to close the interceptor dam 98, such as Figure 28As shown, the opening and closing assembly, composed of frame 922, inner telescopic rod 926, and airtight pressure-bearing soft cloth 924, moves rapidly downward along the guide groove via a guide slider, causing the airtight pressure-bearing soft cloth 924 to seal the pressure-resistant blocking member 94, thereby blocking the inlet water flow of the intercepting dam 98. After the airtight pressure-bearing soft cloth 924 cuts off the inlet water flow of the intercepting dam 98, the inlet pressure of the intercepting dam 98 is greater than the outlet pressure of the intercepting dam 98. Therefore, the airtight pressure-bearing soft cloth 924 can be pressed against the grid under the action of the inlet water flow of the intercepting dam 98. In this way, when the opening and closing assembly is closed, the airtight pressure-bearing soft cloth 924 can form a seal with the pressure-resistant blocking member 94 under the pressure of the water flow inside the intercepting dam 98, while the limit blocks at both ends limit the movement. As the inlet pressure of the intercepting dam 98 gradually increases, the movable rod 925 pulls the inner telescopic rod 926, causing the pressure release rod 927 to deform upwards. This pulls the lower edge of the airtight pressure-bearing soft cloth 924 upwards to a preset height, allowing a small opening to be made at the bottom of the frame 922. After this opening, some of the pressure at the inlet of the intercepting dam 98 is released through its outlet. This partially relieves pressure between the fully open and closed components of the intercepting dam 98. After a preset pressure relief time, the pressure difference between the inlet and outlet of the intercepting device 92 decreases. Therefore, after pressure relief, the force exerted by the medium on the opening and closing components (composed of the frame 922, inner telescopic rod 926, and airtight pressure-bearing soft cloth 924) is much less than the force exerted before pressure relief. This reduces the total force on the movable rod 925 and the opening and closing components, thereby reducing the thrust required by the actuator 923 to open the intercepting device 92, making it easier to open. Subsequently, the actuator 923 can be used to lift the entire opening and closing assembly further upwards until the opening and closing assembly fully opens the interception dam 98. This structure, by releasing pressure in advance through the pressure release rod 927, reduces the force required to open the interception device 92, thus enabling the overall structure of the interception device 92 to be smaller and lighter, while also reducing the manufacturing cost of the interception device 92, improving the economic efficiency of the interception device 92, and achieving the goal of energy saving and consumption reduction.

[0315] in, Figure 28 The arrows indicate the direction of movement of the frame components and the airtight pressure-bearing soft cloth 924.

[0316] Preferably, the actuator 923 drives the movable rod 925 to extend and retract via a T-shaped threaded joint.

[0317] Preferably, the airtight pressure-bearing soft cloth 924 is made of an airtight fabric material, for example, the airtight pressure-bearing soft cloth 924 can be made of fire-fighting cloth.

[0318] In one specific embodiment, such as Figure 28As shown, the bottom edge of the airtight pressure-bearing soft cloth 924 is covered with the pre-release pressure rod 927, and the upper edge of the airtight pressure-bearing soft cloth 924 is covered with the frame 922. After the airtight pressure-bearing soft cloth 924 is lifted to the preset height, the pre-release pressure rod 927 can also drive the lower edge of the airtight pressure-bearing soft cloth 924 to move upward relative to the frame 922 and form folds under the action of the inner telescopic rod 926, and the middle part of the airtight pressure-bearing soft cloth 924 is in a non-tensioned state.

[0319] In this embodiment, the airtight pressure-bearing soft cloth 924 is only mounted on the pre-release pressure rod 927 with its bottom edge covered, and connected to the frame 922 with its top edge. However, the left and right sides of the airtight pressure-bearing soft cloth 924 are not fixed. Simultaneously, after the airtight pressure-bearing soft cloth 924 is pulled to a preset height, the pre-release pressure rod 927 can also, under the action of the inner telescopic rod 926, cause the lower edge of the airtight pressure-bearing soft cloth 924 to move upward relative to the frame 922 and form folds. That is to say, after the fluid channel is depressurized, the lower edge of the airtight pressure-bearing soft cloth 924 can also be pulled upward relative to the frame 922 under the action of the pre-release pressure rod 927 and the inner telescopic rod 926. This allows the lower edge of the airtight pressure-bearing soft cloth 924 to be rolled up relative to the frame 922, thus opening the frame 922. With this structure, the airtight pressure-bearing soft cloth 924 can be opened like a venetian blind. After depressurization, when the interceptor device 92 needs to be fully opened, the frame assembly and the airtight pressure-bearing soft cloth 924 can be moved upwards as a whole a certain distance. Then, the end of the airtight pressure-bearing soft cloth 924 near the pre-pressure release rod is moved upwards to form a pleated layer. Compared with the scheme where the airtight pressure-bearing soft cloth 924 is fixed on all four sides, this structure requires the frame assembly to move upwards a smaller distance to fully open the interceptor device 92, thus reducing the space inside the interceptor device 92 and consequently reducing its volume. Furthermore, the middle of the airtight pressure-bearing soft cloth 924 is in a non-tensioned state, allowing some soft cloth to accumulate in the middle, increasing its area and improving the sealing effect when it is compressed against the pressure-resistant barrier 94 to form a seal.

[0320] In another specific embodiment (not shown in the figure), the bottom edge of the airtight pressure-bearing soft cloth 924 covers the pre-release pressure rod 927, the remaining edges of the airtight pressure-bearing soft cloth 924 cover the frame 922, and the middle part of the airtight pressure-bearing soft cloth 924 is in a non-tensioned state.

[0321] In this embodiment, the bottom edge of the airtight pressure-bearing soft cloth 924 covers the pre-release pressure rod 927, while the remaining edges are covered and installed on the frame 922, thus fixing the airtight pressure-bearing soft cloth 924 around its perimeter. Specifically, the frame 922 can be configured as a U-shape or C-shape, with the pre-release pressure rod 927 positioned at the opening of the U-shape or C-shape, allowing the frame 922 and the pre-release pressure rod 927 to form a ring-shaped frame structure. This ring-shaped frame structure enables the airtight pressure-bearing soft cloth 924 to be fixed around its perimeter. With this structure, the airtight pressure-bearing soft cloth 924 can only be slightly lifted to a certain height when the pre-release pressure rod 927 deforms upwards, thus allowing the interception dam to release pressure first. After the pressure is released, the frame assembly and the airtight pressure-bearing soft cloth 924 move upwards as a whole, achieving full opening of the interception dam. In this structure, because the frame assembly and the airtight pressure-bearing soft cloth 924 need to move upwards as a whole, the required cavity space of the intercepting device 92 is relatively large. Since the middle part of the airtight pressure-bearing soft cloth 924 is in a non-tensioned state, some soft cloth can be piled up in the middle of the airtight pressure-bearing soft cloth 924. This increases the area of ​​the airtight pressure-bearing soft cloth 924 and improves the sealing effect when the airtight pressure-bearing soft cloth 924 is compressed against the pressure-resistant barrier 94 and forms a seal with the pressure-resistant barrier 94.

[0322] Preferably, such as Figure 28 As shown, the pre-release pressure rod 927 is a single rod, but it also includes two interconnected segmented rods.

[0323] Preferably, such as Figure 28 As shown, the pre-release pressure rod 927 is an elastic rod. Under the action of the inner telescopic rod 926, the pre-release pressure rod 927 can deform towards the opening and closing channel to achieve the lifting of the airtight pressure-bearing soft cloth 924.

[0324] Preferably, the pre-release pressure rod 927 is a carbon fiber rod because carbon fiber rods have the advantages of high strength and easy deformation. Of course, the pre-release pressure rod 927 can also be a non-carbon fiber rod.

[0325] In any of the above embodiments, the medium flowing through the channel can be one or more substances among liquids, gases, and particulate matter such as rice.

[0326] In any of the above embodiments, the pressure-resistant barrier is set at a preset angle to the axial direction of the fluid channel, where the preset angle is greater than 0° and less than or equal to 90°. That is, the pressure-resistant barrier can be installed along the radial direction of the fluid channel, i.e., the pressure-resistant barrier is installed vertically in the fluid channel, or the pressure-resistant barrier is set at a preset angle to the axial direction of the fluid channel, where the preset angle is greater than 0° and less than 90°, i.e., the pressure-resistant barrier can also be installed at an angle relative to the fluid channel, and does not necessarily have to be installed vertically.

[0327] In any of the above embodiments, the inlet portion of the hose is fixed, while the rest of the hose is in a non-fixed state. That is, apart from the fixed inlet, the rest of the hose is in a free-flowing, unfixed state, meaning the end of the hose is not fixed by any external object. This allows the outside of the hose to communicate with the external environment of the entire device, making the pressure near the outer wall of the hose consistent with the pressure of the surrounding environment. This prevents the hose from forming a closed cavity with other objects, leaving the outside of the hose essentially exposed to its environment. Therefore, the pressure outside the hose is the same as the pressure of the surrounding environment. Furthermore, considering that the hose in this application is a non-expandable, fabric-covered hose—meaning it won't expand under pressure—it cannot rely on the hose's own expansion and deformation for sealing. Therefore, in this application, sealing the hose simply involves attaching two pieces of fabric together. Neither piece of fabric expands or deforms during this process. Because the inner wall of the hose does not expand or deform, a static seal is formed when the inner walls of the hose are attached. When the pressure inside the hose is lower than the ambient pressure outside the hose, the hose will retract to varying degrees into the water outlet channel under the influence of the pressure difference, leaving the rest of the hose in a non-fixed, natural state. This allows the hose to move freely and can be flattened at any point to form a static seal. In other words, this application requires the hose to be non-expandable and compressible, ensuring that it does not expand under pressure and that its inner wall can conform to the surface without expansion or deformation under pressure, thus forming a static seal.

[0328] In any of the above embodiments, the hose is a fabric-covered hose, i.e., a non-expanding hose, such as a non-elastic hose. This means it is a tube capable of withstanding a certain pressure without expanding, such as a soft fabric hose. The hose's ability to withstand pressure without expansion means that the hose in this application cannot expand or deform under the pressure difference between its inner and outer surfaces; it can only be flattened under the pressure difference, resulting in a tight seal between the inner walls of the hose, forming a static seal. In other words, the inner wall of the hose in this application is sealed by external environmental pressure, not by the elastic deformation of the hose. Essentially, the hose in this application is compressed by external environmental pressure when the external environmental pressure is greater than the internal pressure, causing the inner walls of the hose to adhere together. During this adhesion process, the inner walls of the hose do not deform or expand, making the adhesion between the inner walls a true static seal between two non-expanding surfaces.

[0329] In any of the above embodiments, the pressure outside the hose in this application refers to the pressure of the environment in which the hose is located. For example, when the hose is installed in the air, the pressure outside the hose is the external atmospheric pressure. When the hose is installed in a liquid such as river water or seawater, the pressure outside the hose is the pressure of the liquid such as river water or seawater located outside the hose. When the hose is installed in the valve body channel, the pressure outside the hose is the pressure of the medium located in the valve body channel.

[0330] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0331] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0332] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0333] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water supply and drainage control device, characterized in that, include: A pressure-resistant barrier component is sealed and installed inside the interception dam, located near the inlet of the interception dam; A hose, one end of which is airtightly installed on the pressure-resistant barrier near the outlet of the interception dam, or the hose is directly airtightly installed at the outlet of the interception dam, and the other end of which extends out of the outlet of the interception dam by a predetermined distance and is in a non-fixed natural state, the hose is a hose with fabric, and when the pressure inside the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly pressed together by the medium pressure outside the hose to form a static seal; An interception device is installed at the entrance of the interception dam. The interception device includes a housing assembly and an opening and closing assembly mounted on the housing assembly, as well as an actuator connected to the opening and closing assembly. The opening and closing assembly is slidably installed at the entrance of the interception dam in a vertical direction to adjust the opening size of the interception dam entrance and / or control the opening and closing of the interception dam entrance. The actuator is used to drive the opening and closing assembly to slide vertically so that the opening and closing assembly can adjust the opening size of the interception dam entrance and / or control the opening and closing of the interception dam entrance. The opening and closing assembly is provided with an airtight pressure-bearing soft cloth on one side near the pressure-resistant barrier. When the opening and closing assembly closes the entrance of the interception dam, the airtight pressure-bearing soft cloth can seal and wrap the periphery of the pressure-resistant barrier under the action of the medium pressure in the interception dam, so as to achieve the sealing of the pressure-resistant barrier by the airtight pressure-bearing soft cloth. The opening and closing assembly includes a movable rod with one end installed inside the housing assembly and connected to the actuator. The other end of the movable rod can be telescopically installed at the inlet of the interception dam. The opening and closing assembly also includes a frame assembly, an inner telescopic rod, and the airtight pressure-bearing soft cloth connected to the end of the movable rod that extends into the inlet of the interception dam. The airtight pressure-bearing soft cloth seals and covers the side of the frame assembly near the pressure-resistant barrier. The frame assembly includes a frame and a pre-release pressure rod. The upper end of the frame is connected to the movable rod, and the lower end of the frame is open. The pre-release pressure rod is installed at the opening at the lower end of the frame and connected to the inner telescopic rod. The pre-release pressure rod can lift the airtight pressure-bearing soft cloth upward under the action of the inner telescopic rod. When the actuator drives the opening and closing assembly to slide downward and close the dam inlet, the airtight pressure-bearing soft cloth can seal and wrap around the pressure-resistant barrier under the pressure of the medium inside the dam, thereby achieving the sealing of the pressure-resistant barrier by the airtight pressure-bearing soft cloth. During the process of the actuator driving the opening and closing assembly to open the dam inlet, the movable rod, under the action of the actuator, first lifts the airtight pressure-bearing soft cloth upward through the inner telescopic rod and the pre-release pressure rod. After the airtight pressure-bearing soft cloth is lifted to a preset height, the dam releases pressure through the dam outlet. After a preset pressure release time, the movable rod, under the action of the actuator, gradually raises the airtight pressure-bearing soft cloth through the frame assembly and opens the dam inlet. The hose is a fabric-lined pressure-bearing hose and / or the hose is made of an airtight pressure-bearing soft material.

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