Double-channel adjusting check valve and control system

Abstract

The utility model discloses a two-channel adjusting check valve and a control system, the two-channel adjusting check valve comprises a main body, a check piece and an adjusting piece, the main body is provided with a main flow channel, a one-way flow channel and an adjusting flow channel, and the one-way flow channel and the adjusting flow channel are arranged in parallel and both communicated with the main flow channel; the non-return piece is arranged in the one-way flow channel and can limit the fluid in the one-way flow channel to flow in the preset direction; the adjusting part is arranged in the adjusting flow channel and can adjust the flow in the adjusting flow channel. The double-channel adjusting check valve is configured in the mode that when fluid flows in the preset direction, a check piece opens a one-way flow channel so that the fluid can flow in the preset direction; when the fluid flows in the direction opposite to the preset direction, the check piece closes the one-way flow channel, the adjusting piece opens the adjusting flow channel, and the flow in the adjusting flow channel is adjusted. The double-channel adjusting check valve can reduce manufacturing cost and improve adjusting efficiency, and is applied to the technical field of valves.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially in two passageway regulating check valve and control system. BACKGROUND

[0002] The inlet bypass pipe and the outlet bypass pipe of the pipe force valve are each equipped with an ordinary ball valve for adjusting the water flow size of the upper cavity and the lower cavity of the diaphragm to control the opening speed and the closing speed of the pipe force valve.

[0003] In the related art, multiple ball valves need to be arranged to control the speed of the pipe force valve during opening and closing, but the flow of the pipe force valve is large during opening and can be controlled by the ball valve, while the flow of the pipe force valve is small during closing and is difficult to control by the ball valve, so that the closing speed of the pipe force valve is difficult to accurately adjust, and multiple ball valves need to be arranged with multiple pipelines, which is more costly and more inconvenient to adjust. SUMMARY

[0004] The utility model aims at solving the technical problem existing in the prior art. Therefore, the utility model provides a two passageway regulating check valve, which can accurately adjust the opening and closing speed of the pipe force valve, reduce the manufacturing cost, and reduce the pipeline of the control system.

[0005] A control system with the above two passageway regulating check valve is also provided.

[0006] The two passageway regulating check valve according to the first aspect of the utility model comprises:

[0007] A main body has a main flow channel, a one-way flow channel and an adjusting flow channel which are arranged in parallel and are connected to the main flow channel;

[0008] A check element is arranged in the one-way flow channel and can limit the flow of fluid in the one-way flow channel in a preset direction;

[0009] An adjusting element is arranged in the adjusting flow channel and can adjust the flow size in the adjusting flow channel;

[0010] The two passageway regulating check valve is configured to: when the fluid flows in the preset direction, the check element opens the one-way flow channel to allow the fluid to flow in the preset direction; when the fluid flows in the opposite direction of the preset direction, the check element closes the one-way flow channel, the adjusting element opens the adjusting flow channel, and adjusts the flow size in the adjusting flow channel.

[0011] The double-channel regulating check valve has at least the following beneficial effects: the check piece can be opened when fluid flows in a preset direction, fluid can quickly pass through the main body, and the check piece can be closed when fluid flows in the opposite direction of the preset direction, so that fluid mainly passes through the main body through the regulating flow channel; meanwhile, a user can adjust the size of the regulating flow channel through the adjusting piece to control the speed of fluid passing through the regulating flow channel, the speed of fluid with small flow is conveniently adjusted, the double-channel regulating check valve integrates the functions of multiple valve structures through a single valve structure, the manufacturing cost is lower, the installation efficiency is higher, and the adjusting efficiency is higher through the adjusting piece to adjust the flow.

[0012] According to some embodiments of the utility model, the main body further includes a first stop portion and a second stop portion arranged in sequence along the preset direction, the check piece is arranged between the first stop portion and the second stop portion, the first stop portion has a first communication port communicating with the one-way flow channel, the second stop portion has a second communication port for fluid to pass through, and the check piece has a first state and a second state.

[0013] The check piece is configured to: when the fluid flows in the preset direction, be in the first state, abut against the second stop portion, and the second communication port be at least partially open, and the first communication port be open; and when the fluid flows in the opposite direction of the preset direction, be in the second state, abut against the first stop portion, and close the first communication port, and the second communication port be open.

[0014] According to some embodiments of the utility model, the check piece includes a stop ball, the first stop portion has an arc surface surrounding the first communication port, and the outer peripheral surface of the stop ball can be attached to the arc surface.

[0015] According to some embodiments of the utility model, the check piece includes a stop ball, the second stop portion has a positioning portion, the positioning portion is arranged in radial misalignment with the second communication port along the one-way flow channel, and the outer peripheral surface of the stop ball can be sealedly attached to the positioning portion.

[0016] According to some embodiments of the utility model, the main body has a mounting hole communicating with the regulating flow channel, the adjusting piece is sealingly arranged in the mounting hole and can move in the axial direction of the mounting hole to adjust the size of the regulating flow channel.

[0017] According to some embodiments of the utility model, the adjusting piece is screw-connected to the mounting hole.

[0018] According to some embodiments of the present application, the adjusting member comprises an adjusting rod and a sliding sealing ring, the outer circumferential surface of the adjusting rod has a mounting groove in the axial direction of the adjusting rod, and the sliding sealing ring is arranged in the mounting groove.

[0019] According to some embodiments of the present application, the adjusting member comprises an adjusting rod and an adjusting part arranged at one end of the adjusting rod, the adjusting part has a conical circumferential surface, the adjusting flow channel has a third communication port communicated with the main flow channel or the one-way flow channel, the third communication port is opposite to the mounting hole, and the conical circumferential surface can abut against and close the third communication port.

[0020] According to some embodiments of the present application, the main body comprises a valve body and a valve cover, and the valve cover is detachably connected to the valve body.

[0021] According to the control system of the second aspect of the present application, the control system comprises:

[0022] The control cavity has a control cavity;

[0023] The pressure-receiving moving assembly is arranged in the control cavity and separates the control cavity into a first cavity and a second cavity, the pressure-receiving moving assembly can move relative to the control cavity body and change the proportion of the first cavity relative to the whole control cavity body;

[0024] The linkage assembly is drivingly connected to the pressure-receiving moving assembly;

[0025] The inlet bypass pipeline is communicated with the first cavity;

[0026] The outlet bypass pipeline is communicated with the second cavity;

[0027] The first control valve is arranged in the inlet bypass pipeline;

[0028] The second control valve is arranged in the outlet bypass pipeline;

[0029] The first control valve and the second control valve are both the double-channel adjusting check valve of the first aspect of the present application, the first preset direction of the first control valve is opposite to the second preset direction of the second control valve;

[0030] The double-channel adjusting check valve is configured to: when the pressure value of the inlet bypass pipeline is greater than the pressure value of the outlet bypass pipeline, the fluid in the first control valve flows in the first preset direction, and the fluid in the second control valve flows in the opposite direction of the second preset direction.

[0031] The control system according to the second aspect of the utility model has at least the following beneficial effects: the control system can adjust and accurately control the opening speed and the closing speed of the pipe force valve respectively, reduces the water hammer pressure rise, and effectively prevents water hammer accidents.

[0032] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0033] The utility model will be further explained in connection with the drawings and examples, wherein:

[0034] Figure 1 It is the cross section schematic view of double channel adjusting check valve of an embodiment of the utility model;

[0035] Figure 2 It is the overhead schematic view of the second stop portion in double channel adjusting check valve of an embodiment of the utility model;

[0036] Figure 3 It is the cross section schematic view of the control system with double channel adjusting check valve of an embodiment of the utility model when inlet bypass pipeline is in water;

[0037] Figure 4 It is the cross section schematic view of the control system with double channel adjusting check valve of an embodiment of the utility model when inlet bypass pipeline is in water.

[0038] REFERENCE NUMERALS:

[0039] Main body 100;Main flow channel 110;One-way flow channel 120;Adjusting flow channel 130;Third communication port 131;First stop portion 140;First communication port 141;Second stop portion 150;Second communication port 151;Positioning portion 152;Mounting hole 160;Valve body 170;Valve cover 180;Fixed sealing ring 190;

[0040] Check piece 200;

[0041] Adjusting piece 300;Adjusting rod 310;Mounting groove 311;Sliding sealing ring 320;Adjusting portion 330;

[0042] Control cavity 1000;First cavity 1100;Second cavity 1200;

[0043] Pressure receiving moving assembly 2000;

[0044] Linkage assembly 3000;

[0045] Inlet bypass pipeline 4000;

[0046] Outlet bypass pipeline 5000;

[0047] The first control valve 6000;

[0048] The second control valve 7000. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and should not be understood as a limitation of the present application.

[0050] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0051] In the description of the present application, several means one or more than one, and multiple means two or more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0052] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0053] The pipe force valve does not need external power and relies on the pressure difference of the medium flowing through the valve to drive the control system to work, and is commonly used at the outlet of the water pump, plays a role of controlling the pump current and reducing the pump water hammer, prevents the water hammer accident, and protects the safety of the water pump and the pipeline system.

[0054] Specifically, the pipe force valve comprises a connecting channel, a valve plate assembly arranged in the connecting channel, and a control cavity arranged outside the connecting channel, the valve plate assembly can open or close the connecting channel, the control cavity is used for controlling the opening or closing of the valve plate assembly, and the opening speed and the closing speed of the valve plate assembly. Generally, the control cavity comprises a control pipeline and a control valve arranged in the control pipeline, and the opening and closing and the opening and closing speed of the valve plate assembly are indirectly controlled through the control valve.

[0055] Based on this, referring to Figures 1 to 4The utility model discloses a first aspect embodiment proposes a kind of double-channel regulating check valve, mainly applied to the control pipeline of various control system structures, to indirectly control the opening and closing and opening and closing speed of valve plate assembly, double-channel regulating check valve includes:

[0056] The main body 100 has a main flow channel 110, a one-way flow channel 120 and an adjusting flow channel 130 connected in parallel and communicated with the main flow channel 110; the one-way flow channel 120 and the adjusting flow channel 130 are connected in parallel, which means that when only the one-way flow channel 120 or the adjusting flow channel 130 is in an open state, the main body 100 as a whole is still in a communication state, and fluid can still pass through the main body 100. Specifically, one end of the adjusting flow channel 130 is connected to the one-way flow channel 120, and the other end is connected to the main flow channel 110.

[0057] The check member 200 is arranged in the one-way flow channel 120 and can restrict the flow of fluid in the one-way flow channel 120 in a predetermined direction; in other words, when the fluid in the one-way flow channel 120 flows in the predetermined direction, the check member 200 will not close the one-way flow channel 120, and the fluid can enter the main flow channel 110 through the one-way flow channel 120; when the fluid in the one-way flow channel 120 flows in the opposite direction of the predetermined direction, the check member 200 will close the one-way flow channel 120, and it will be difficult for the fluid to enter the main flow channel 110 through the one-way flow channel 120.

[0058] The adjusting member 300 is arranged in the adjusting flow channel 130 and can adjust the size of the flow in the adjusting flow channel 130; specifically, the adjusting member 300 changes the size of the cross section in the adjusting flow channel 130 to change the size of the flow through the adjusting flow channel 130.

[0059] The double-channel regulating check valve is configured to: when the fluid flows in the predetermined direction, the check member 200 opens the one-way flow channel 120 to allow the fluid to flow in the predetermined direction; at this time, the adjusting member 300 can control the adjusting flow channel 130 to be in an open or closed state, and the opening and closing of the adjusting flow channel 130 does not affect the smoothness of the one-way flow channel 120 and the main flow channel 110, which is more suitable for scenarios with large flow.

[0060] It is worth understanding that the check valve 200 can be opened when the fluid flows in the preset direction, facilitating the fluid to pass through the main body 100 quickly, and can be closed when the fluid flows in the opposite direction of the preset direction, so that the fluid mainly passes through the main body 100 through the adjusting flow channel 130, and the user can adjust the size of the adjusting flow channel 130 through the adjusting part 300 to control the speed of the fluid passing through the adjusting flow channel 130, facilitating the adjustment of the speed of the small flow of fluid. The double-channel regulating check valve integrates the functions of multiple valve structures through a single valve structure, has lower manufacturing cost, higher installation efficiency, and adjusts the flow through the adjusting part 300, so that the adjustment steps are fewer and the adjustment efficiency is higher.

[0061] With reference to Figure 1 With Figure 2 As shown in the utility model, in some specific embodiments of the utility model, the main body 100 further includes a first stop portion 140 and a second stop portion 150 arranged in sequence along the preset direction, the check valve 200 is arranged between the first stop portion 140 and the second stop portion 150, the first stop portion 140 has a first communication port 141 communicating with the one-way flow channel 120, the second stop portion 150 has a second communication port 151 for the fluid to pass through, and the check valve 200 has a first state and a second state; wherein the check valve 200 is configured to: when the fluid flows in the preset direction, be in the first state, abut against the second stop portion 150, and the second communication port 151 is at least partially open, and the first communication port 141 is open; when the fluid flows in the opposite direction of the preset direction, be in the second state, abut against the first stop portion 140, and close the first communication port 141, and the second communication port 151 is open.

[0062] In the embodiment, the first stop portion 140 is arranged at the communication position of the one-way flow channel 120 and the main flow channel 110, the second stop portion 150 is arranged in the main flow channel 110, and the check valve 200 is limited by the first stop portion 140 and the second stop portion 150, so that the check valve 200 mainly moves freely between the first stop portion 140 and the second stop portion 150, thereby realizing the function of the check valve 200 limiting the fluid in the one-way flow channel 120 to flow in the preset direction.

[0063] Specifically, when the fluid flows in the preset direction, the fluid will push the check valve 200 to abut against the second stop portion 150, and the check valve 200 will not block the second communication port 151, so that the one-way flow channel 120 and the main flow channel 110 can still keep unobstructed, and there will be a gap between the check valve 200 and the inner circumferential wall of the main pipeline for the fluid to pass through.

[0064] When the fluid flows in the opposite direction of the preset direction, the fluid will push the check piece 200 to abut against the first stop portion 140, at this time, the check piece 200 will block the first communication port 141, and because of the pushing force of the fluid, the check piece 200 continuously abuts against the first communication port 141, realizing the closing of the one-way flow channel 120, at this time, the opening and closing of the adjusting flow channel 130 can be adjusted through the adjusting piece 300, realizing the control of the opening and closing of the main body 100.

[0065] Referring to Figure 1 As shown in some specific embodiments of the utility model, the check piece 200 includes a stop ball, the first stop portion 140 has an arc surface surrounding the first communication port 141, and the outer peripheral surface of the stop ball can be attached to the arc surface. The arc surface can be a cylindrical surface, a conical surface or a spherical surface.

[0066] In this embodiment, when the check piece 200 abuts against the first stop portion 140, the sealing pair between the check piece 200 and the first stop portion 140 is formed by the attachment of the outer peripheral surface of the stop ball to the arc surface, thereby sealing the first stop portion 140 and being able to block the communication between the one-way flow channel 120 and the main flow channel 110, realizing the control of the one-way flow channel 120, which is realized by the flow direction of the fluid without the intervention of external force, has low use cost, realizes self-adaptive control and has wider application range.

[0067] Referring to Figure 1 As shown in some specific embodiments of the utility model, the check piece 200 includes a stop ball, the second stop portion 150 has a positioning portion 152, the positioning portion 152 is arranged in radial direction of the one-way flow channel 120 and is misaligned with the second communication port 151, and the outer peripheral surface of the stop ball can be sealingly attached to the positioning portion 152.

[0068] It is worth understanding that the second stop portion 150 positions the check piece 200 through the positioning portion 152, when the check piece 200 abuts against the positioning portion 152 due to the pushing force of the fluid, will be guided by the positioning portion 152 and fixed at the position where the positioning portion 152 is located, preventing the check piece 200 from moving on the surface of the second stop portion 150.

[0069] In this embodiment, the positioning portion 152 is arranged at the middle portion of the second stop portion 150, the second stop portion 150 has a plurality of second communication ports 151, the plurality of second communication ports 151 are arranged around the positioning portion 152, when the stop ball is in the positioning portion 152, the outer peripheral surface of the stop ball will form an annular channel with the inner peripheral surface of the main flow channel 110, the fluid passes through the annular channel and then passes through the second communication port 151 to enter the inlet bypass pipe 2000, forming a stable flow channel.

[0070] Referring to Figure 1As shown in some specific embodiments of the present application, the main body 100 has a mounting hole 160 connected to the adjusting flow channel 130, the adjusting member 300 is sealingly arranged in the mounting hole 160 and can move along the axial direction of the mounting hole 160 to adjust the size of the adjusting flow channel 130.

[0071] It is worth understanding that the adjusting member 300 is moved along the axial direction of the mounting hole 160, so that part of the adjusting member 300 can extend into the adjusting flow channel 130 to form a stop in the adjusting flow channel 130 and reduce the cross-sectional area of the adjusting flow channel 130, thereby adjusting the adjusting flow channel 130.

[0072] Referring to Figure 1 As shown in some specific embodiments of the present application, the adjusting member 300 is threadedly connected to the mounting hole 160.

[0073] It is worth understanding that the rotation of the adjusting member 300 is converted into the axial movement of the adjusting member 300 along the mounting hole 160, so that the adjustment of the adjusting member 300 is more convenient, and the number of rotations of the adjusting member 300 can be used to control the distance of the axial movement of the adjusting member 300 along the mounting hole 160, so that the adjustment of the adjusting member 300 is more accurate.

[0074] Referring to Figure 1 As shown in some specific embodiments of the present application, the adjusting member 300 includes an adjusting rod 310 and a sliding sealing ring 320, the outer circumferential surface of the adjusting rod 310 has a mounting groove 311 in the axial direction of the adjusting rod 310, and the sliding sealing ring 320 is arranged in the mounting groove 311.

[0075] It is worth understanding that in the process of rotating the adjusting rod 310, the adjusting rod 310 is sealed by the sliding sealing ring 320, so that even if the adjusting rod 310 is in a state of motion, the gap between the adjusting rod 310 and the inner circumferential surface of the mounting hole 160 is in a sealed state, which can effectively prevent the fluid in the main body 100 from leaking and improve the stability of the entire system.

[0076] In this embodiment, the adjusting rod 310 has three mounting grooves 311 spaced apart in the axial direction of the adjusting rod 310, and the three sliding sealing rings 320 are arranged in the three mounting grooves 311, respectively. In the process of moving the adjusting rod 310, the sliding sealing ring 320 moves with the adjusting rod 310, so that the sliding sealing ring 320 is not easy to fall out of the adjusting rod 310, and the sealing performance of the adjusting rod 310 is more reliable.

[0077] Referring to Figure 1As shown, in some specific embodiments of the utility model, the adjusting piece 300 includes adjusting rod 310 and adjusting part 330 arranged at one end of adjusting rod 310, adjusting part 330 has taper peripheral surface, adjusting flow channel 130 has third communication port 131 communicated with one-way flow channel 120, taper peripheral surface can abut and close third communication port 131.

[0078] It is worth understanding that by taper peripheral surface of adjusting part 330 and the abutment of the opening edge of third communication port 131, a separate sealing pair is formed, so that adjusting part 330 can close third communication port 131, and further adjusting piece 300 can control the opening and closing of adjusting flow channel 130, facilitating the active control of adjusting flow channel 130, and under the premise that one-way flow channel 120 realizes automatic control through check piece 200, the user can realize the opening and closing of main body 100 through the active control of adjusting flow channel 130.

[0079] Referring to Figure 1 As shown, in some specific embodiments of the utility model, main body 100 includes valve body 170 and valve cover 180, valve cover 180 is detachably connected to valve body 170.

[0080] It is worth understanding that valve cover 180 has first stop portion 140, valve body 170 has second stop portion 150, and first stop portion 140 and second stop portion 150 form a mounting space, check piece 200 is arranged in the mounting space, and the detachable connection of valve cover 180 and valve body 170 facilitates the replacement or maintenance of check piece 200, and also facilitates the installation of check piece 200. In this embodiment, valve cover 180 is detachably connected to valve body 170 by bolts, and a fixed sealing ring 190 is arranged between valve cover 180 and valve body 170 to seal the gap therebetween.

[0081] Referring to Figure 3 With Figure 4 As shown, the second aspect of the utility model provides a control system, which can specifically control the opening and closing speed of the pipe force valve. It is worth understanding that the control system can adjust and accurately control the opening and closing speed of the pipe force valve respectively, reduce the water hammer pressure rise, and effectively prevent water hammer accidents.

[0082] Referring to Figure 3 With Figure 4 As shown, in some specific embodiments of the utility model, the control system includes: control cavity 1000, pressure receiving moving assembly 2000, linkage assembly 3000, inlet bypass pipeline 4000, outlet bypass pipeline 5000, first control valve 6000, and second control valve 7000.

[0083] The control cavity 1000 has a control cavity; the pressure-receiving moving assembly 2000 is arranged in the control cavity and separates the control cavity into a first cavity 1100 and a second cavity 1200, the pressure-receiving moving assembly 2000 can move relative to the control cavity 1000 and change the proportion of the first cavity 1100 relative to the whole control cavity 1000; the linkage assembly 3000 is in transmission connection with the pressure-receiving moving assembly 2000; the inlet bypass pipeline 4000 is communicated with the first cavity 1100; the outlet bypass pipeline 5000 is communicated with the second cavity 1200; the first control valve 6000 is arranged in the inlet bypass pipeline 4000; the second control valve 7000 is arranged in the outlet bypass pipeline 5000; wherein the first control valve 6000 and the second control valve 7000 are both the double-channel regulating check valve of the first aspect, the first preset direction of the first control valve 6000 is opposite to the second preset direction of the second control valve 7000; wherein the double-channel regulating check valve is configured to: when the pressure value of the inlet bypass pipeline 4000 is greater than the pressure value of the outlet bypass pipeline 5000, the fluid in the first control valve 6000 flows in the first preset direction, and the fluid in the second control valve 7000 flows in the opposite direction of the second preset direction.

[0084] Referring to Figure 3 In the embodiment, when the pressure value of the inlet bypass pipeline 4000 is greater than the pressure value of the outlet bypass pipeline 5000, the water flow in the inlet bypass pipeline 4000 moves in the first preset direction, the water flow in the first control valve 6000 pushes the first check piece to move upward and opens the first one-way flow channel, when the first regulating flow channel is in the open state, the first one-way flow channel and the first regulating flow channel together supply the water flow to move in the first preset direction, the water flow enters the first cavity 1100 through the inlet bypass pipeline 4000 and pushes the pressure-receiving moving assembly 2000 to move upward, the pressure-receiving moving assembly 2000 drives the linkage assembly 3000 to move upward, and the tube force valve slowly opens under the pushing of the pressure water; at the same time, the pressure water in the second cavity 1200 enters the outlet bypass pipeline 5000, the water flow passes through the second control valve 7000 in the first preset direction, the pressure water pushes the second check piece to move downward and closes the second one-way flow channel, and the water flow mainly flows out of the outlet bypass pipeline 5000 through the second regulating flow channel, at this time, the second regulating piece is adjusted, that is, the flow area of the second regulating flow channel is adjusted, so as to control the water discharge speed in the second cavity 1200, and then adjust the opening speed of the tube force valve.

[0085] Referring to Figure 4As shown, when the pressure value of the inlet bypass pipeline 4000 is less than the pressure value of the outlet bypass pipeline 5000, the water flow in the outlet bypass pipeline 5000 moves along the second preset direction, the water flow in the second control valve 7000 pushes the second check valve to move upwards, and the second one-way flow channel is opened, when the second regulating flow channel is in the open state, the second one-way flow channel and the second regulating flow channel together supply the water flow to move along the second preset direction, the water flow enters the second cavity 1200 along the outlet bypass pipeline 5000, and pushes the pressure moving assembly 2000 to move downwards, the pressure moving assembly 2000 drives the linkage assembly 3000 to move downwards, and the pipe force valve is slowly closed under the pushing of the pressure water; at the same time, the pressure water in the first cavity 1100 enters the inlet bypass pipeline 4000, the water flow passes through the first control valve 6000 along the second preset direction, the pressure water pushes the first check valve to move downwards, and the first one-way flow channel is closed, the water flow mainly flows out of the inlet bypass pipeline 4000 through the first regulating flow channel, at this time, the first regulating member is adjusted, that is, the flow area of the first regulating flow channel is adjusted, so as to control the water discharge speed in the first cavity 1100, and then the closing speed of the pipe force valve is adjusted.

[0086] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A dual pass regulating check valve characterized by, include: The main body has a main flow channel, parallel unidirectional flow channels and regulating flow channels connected to the main flow channel; A check valve is provided in the one-way flow channel and can restrict the fluid in the one-way flow channel from flowing in a preset direction; An adjusting element is disposed in the adjusting flow channel and is capable of adjusting the flow rate in the adjusting flow channel; The dual-channel regulating check valve is configured such that when the fluid flows in the preset direction, the check element opens the one-way flow channel to allow the fluid to flow in the preset direction; when the fluid flows in the opposite direction to the preset direction, the check element closes the one-way flow channel, the regulating element opens the regulating flow channel, and the flow rate in the regulating flow channel is adjusted.

2. The dual passageway regulating check valve of claim 1, wherein: The main body also includes a first stop portion and a second stop portion arranged sequentially along the preset direction. The check valve is disposed between the first stop portion and the second stop portion. The first stop portion has a first communication port connecting to the one-way flow channel. The second stop portion has a second communication port for allowing fluid to pass through. The check valve has a first state and a second state. The check valve is configured such that: when the fluid flows in the preset direction, it is in the first state, abutting against the second stop portion, and the second communication port is at least partially open, while the first communication port is open; when the fluid flows in the opposite direction of the preset direction, it is in the second state, abutting against the first stop portion, sealing the first communication port, while the second communication port is open.

3. The dual pass regulating check valve of claim 2, wherein: The check valve includes a stop ball, the first stop portion has an arcuate surface surrounding the first communication port, and the outer peripheral surface of the stop ball can conform to the arcuate surface.

4. The dual pass regulating check valve of claim 2, wherein: The check valve includes a stop ball, and the second stop portion has a positioning portion. The positioning portion and the second communication port are radially offset along the unidirectional flow channel, and the outer peripheral surface of the stop ball can be sealed and fitted to the positioning portion.

5. The dual pass regulating check valve of claim 1, wherein: The main body has a mounting hole communicating with the regulating flow channel. The regulating member is sealed within the mounting hole and can move axially along the mounting hole to adjust the size of the regulating flow channel.

6. The dual pass regulating check valve of claim 5, wherein: The adjusting element is threadedly connected to the mounting hole.

7. The dual pass regulating check valve of claim 5, wherein: The adjusting component includes an adjusting rod and a sliding sealing ring. The outer peripheral surface of the adjusting rod has a mounting groove along the axial direction of the adjusting rod, and the sliding sealing ring is disposed within the mounting groove.

8. The dual pass regulating check valve of claim 5, wherein: The adjusting member includes an adjusting rod and an adjusting part disposed at one end of the adjusting rod. The adjusting part has a tapered circumferential surface. The adjusting channel has a third connecting port that communicates with the main channel or the unidirectional channel. The tapered circumferential surface can abut against and close the third connecting port relative to the mounting hole.

9. The dual pass regulating check valve of claim 1, wherein: The main body includes a valve body and a valve cover, the valve cover being detachably connected to the valve body.

10. A control system characterized by, include: The control cavity is equipped with a control chamber. A pressure-bearing moving component is disposed in the control cavity and spaced apart from the control cavity to form a first cavity and a second cavity. The pressure-bearing moving component is capable of moving relative to the control cavity and changing the proportion of the first cavity relative to the entire control cavity. A linkage component is connected to the pressure-receiving moving component via a transmission mechanism; an inlet bypass duct communicating with the first chamber; an outlet bypass duct communicating with the second chamber; a first control valve provided in the inlet bypass duct; a second control valve provided in the outlet bypass duct; wherein the first control valve and the second control valve are both the double-pass regulating check valve according to any one of claims 1 to 9, and a first preset direction of the first control valve is opposite to a second preset direction of the second control valve; wherein the double-pass regulating check valve is configured to cause fluid in the first control valve to flow in the first preset direction and fluid in the second control valve to flow in a direction opposite to the second preset direction when a pressure value of the inlet bypass duct is greater than a pressure value of the outlet bypass duct.

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