A check valve with impact resistance

Abstract

The present invention relates to the field of check valves, and specifically discloses a check valve with impact resistance, including a valve seat, wherein the valve seat is installed in a pipeline, a control component matched with the valve seat is arranged in the pipeline, a friction component is arranged on the control component, a water storage component connected with the friction component is arranged on the pipeline, and an extrusion component for pressurization is arranged on the water storage component. The present invention can realize the ability to control water flow, and when the liquid stops suddenly, it can realize the slow closing function of the control component to reduce the phenomenon of sudden stop of water flow, and when the water hammer effect occurs, it can disperse the backflow water in time to reduce the impact force of the water flow, and can realize the storage buffering effect of the water flow, further reducing the impact of the water flow, thereby greatly reducing the impact force of the water flow on the pipeline, the valve seat and the control component, slowing down the wear, ensuring the safe and stable operation of the pipeline system, improving the stability of the system, and improving the service life of the system.

Description

Technical Field

[0001] The invention relates to the technical field of check valves, and in particular to a check valve with impact resistance. Background Art

[0002] A check valve, also known as a non-return valve or a one-way valve, is an automatic valve. The function of a check valve is to allow fluid, usually liquid or gas, to flow freely in one direction, and to prevent the passage of fluid in the opposite direction. The main purpose is to prevent fluid backflow, protect equipment from damage, or avoid pollution and other problems. Compared with other types of valves, check valves have unique functions and design features. Check valves usually do not require external power sources or manual intervention, but rely on the pressure changes of the fluid itself to automatically open or close, so they are also widely used.

[0003] In the existing patent CN107054327A, a check valve is disclosed, which is installed in a hole of a regulator block having an inlet path and an outlet path and is configured to control the flow of oil in one direction, and the check valve includes: a valve housing, which is installed in the hole, the valve housing includes an inlet and an outlet configured to be connected to the inlet path and the outlet path, respectively, and the valve housing has an open upper portion; a cover member, which is configured to seal the open upper portion of the valve housing and is fixed to the regulator block; a plunger, which is arranged to move forward or backward in the valve housing and is configured to open or close an internal path between the inlet and the outlet; and a spring, which is arranged between the cover member and the plunger and is configured to press the plunger to close the internal path.

[0004] In the above structure, the sealing performance of the check valve can be improved, but the anti-impact function cannot be achieved. When the liquid stops suddenly, such as the pump stops suddenly, the check valve will close quickly to prevent the liquid from flowing back. At this time, a water hammer effect will occur, causing the liquid to have a strong impact on the check valve and the pipeline, accelerating the wear of the check valve and even causing the check valve to break, affecting the normal performance of the check valve, making it difficult to ensure the safe and stable operation of the pipeline system, reducing the stability of the system, and shortening the service life of the check valve.

[0005] Therefore, how to provide a check valve with impact resistance is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0006] An object of the present invention is to provide a check valve with impact resistance. The check valve with impact resistance described in the present invention comprises a valve seat, the valve seat is installed in a pipeline, a control component adapted to the valve seat is arranged in the pipeline, a friction component is arranged on the control component, a water storage component connected to the friction component is arranged on the pipeline, an extrusion component for pressurizing is arranged on the water storage component, and the water storage component is connected to the pipeline;

[0007] A pulling component is arranged inside the pipeline, a connecting component is arranged on the pulling component, a water-dividing component is arranged on the connecting component, a transmission component is arranged on the pulling component, a pressing component is arranged between the extrusion component and the transmission component, and the pressing component acts on the extrusion component to force the extrusion component to squeeze the water in the water storage component;

[0008] When the water flow stops suddenly, the water flows back and impacts the water distribution component, the water distribution component disperses the water flow, and the water storage component stores the backflow water to achieve an anti-impact effect.

[0009] Preferably, the control component includes a fixed plate arranged in the pipeline, a control rod is arranged on the fixed plate, the control rod passes through the fixed plate, a valve plate adapted to the valve seat is arranged at the end of the control rod, and a control spring is arranged between the valve plate and the fixed plate and is sleeved on the outer ring of the control rod.

[0010] Preferably, the friction assembly includes a friction cylinder arranged on the fixed plate, the control rod passes through the friction cylinder, the end of the control rod is provided with a friction piston adapted to the friction cylinder, the friction piston is located inside the friction cylinder, the friction cylinder is connected to an air duct passing through the pipeline, an electromagnetic valve is installed on the air duct, and the other end of the air duct is connected to the water storage assembly.

[0011] Preferably, the water storage assembly includes a water tank arranged on the pipeline, the water tank is connected to the friction cylinder through the air guide pipe, the water tank is provided with a water inlet pipe and a water outlet pipe, the diameter of the water inlet pipe is larger than that of the water outlet pipe, and both the water inlet pipe and the water outlet pipe are installed with a one-way valve.

[0012] Preferably, the extrusion assembly includes an extrusion rod arranged on the water tank, the extrusion rod passes through the water tank, the end of the extrusion rod is provided with an extrusion piston located inside the water tank, the other end of the extrusion rod is provided with a contact plate, and an extrusion spring sleeved on the outer ring of the extrusion rod is provided between the contact plate and the water tank.

[0013] Preferably, the pulling assembly includes a mounting plate arranged inside the pipe, a pulling rod is arranged on the mounting plate, the pulling rod passes through the mounting plate, a baffle is arranged on the pulling rod, a pulling spring is arranged between the baffle and the mounting plate and is sleeved on the outer ring of the pulling rod, and a limiting plate is arranged on the side of the pulling rod away from the baffle.

[0014] Preferably, the connecting assembly comprises a connecting plate arranged on the pulling rod, a water collecting cylinder adapted to the pipeline is arranged on the connecting plate, the connecting plate is connected to the edge of the water collecting cylinder, and the connecting plate is arranged obliquely.

[0015] Preferably, the water diversion assembly includes a water diversion plate arranged on the water collecting cylinder, the water diversion plate is arranged at an angle, an arc plate is arranged between two of the water diversion plates, a water flow channel is formed between the arc plate and the water diversion plate, the water flow channel is connected to the water collecting cylinder, and a water hole is arranged on the water collecting cylinder.

[0016] Preferably, the transmission assembly includes a support plate arranged on the pipe, a shaft rod is connected to a bearing on the support plate, the shaft rod passes through the pipe, a spur rack is arranged on the pull rod, and a transmission gear meshing with the spur rack is fixedly sleeved on the shaft rod.

[0017] Preferably, the pressing assembly includes a threaded rod connected to the support plate by a bearing, the threaded rod is connected to the shaft rod, a connecting rod is threadedly connected to the threaded rod, the connecting rod passes through the support plate, the threaded rod thread passes through the connecting rod, and a pressing head adapted to the contact plate is provided at the end of the connecting rod, and the pressing head is located above the contact plate.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention installs the device on a pipeline that is prone to water hammer effect. When water flows normally, the water pressure generates a force on the control component, forcing the control component to separate from the valve seat, so that water flows from the valve seat into the pipeline. The water flows through the control component, the outer side of the friction component, the pulling component, the connecting component and the water distribution component to the downstream of the pipeline. At the same time, the control component drives the friction component to move, so that the friction component drives the squeezing component to move, so that the squeezing component squeezes the water in the water storage component and guides the water into the pipeline to flow away. When the liquid stops suddenly, such as the pump stops suddenly, the control component is not subjected to force, so that the control component slowly closes. Under the action of the friction component, the squeezing component is forced to move, so that the water storage space of the water storage component is increased. When the valve seat and the control component are closed, the water backflow first impacts the water distribution component. The water distribution component disperses the water flow into small streams, thereby reducing the impact force of the water flow, and introduces the water into the connecting component to the water storage component through the water distribution component. The water storage component will store the impacted water to achieve a buffering effect on the water flow, thereby further reducing the impact of the water flow. In summary, the check valve with impact resistance in the present application can achieve the ability to control the water flow. When the liquid stops suddenly, it can achieve the slow closing function of the control component to reduce the phenomenon of sudden stop of the water flow. When the water hammer effect occurs, the reflux water can be dispersed in time to reduce the impact force of the water flow, and the storage buffering effect of the water flow can be achieved, further reducing the impact of the water flow, thereby greatly reducing the impact force of the water flow on the pipeline, valve seat and control component, slowing down wear, ensuring the safe and stable operation of the pipeline system, improving the stability of the system, and increasing the service life of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structure entity diagram of the present invention;

[0022] Figure 2 It is a physical diagram of the internal structure of the present invention;

[0023] Figure 3 It is a partial structural entity diagram of the present invention;

[0024] Figure 4 A structural entity diagram of the control assembly of the present invention;

[0025] Figure 5 A diagram showing the relationship between the friction component and the water storage component of the present invention;

[0026] Figure 6 It is a structural entity diagram of the extrusion assembly of the present invention;

[0027] Figure 7 It is a structural entity diagram of the pulling component and the water distribution component of the present invention;

[0028] Figure 8 It is a front view of the water distribution assembly of the present invention;

[0029] Fig. 9 It is a structural entity diagram of the transmission assembly of the present invention;

[0030] Fig.10 It is a structural entity diagram of the pressing component of the present invention.

[0031] In the figure: 1, valve seat; 2, pipeline; 3, control assembly; 301, fixed plate; 302, control rod; 303, valve plate; 304, control spring; 4, friction assembly; 401, friction cylinder; 402, friction piston; 403, air guide pipe; 404, solenoid valve; 5, water storage assembly; 501, water storage tank; 502, water inlet pipe; 503, water outlet pipe; 6, extrusion assembly; 601, extrusion rod; 602, extrusion piston; 603, contact plate; 604, extrusion spring; 7, pulling assembly; 701, installation Mounting plate; 702, pulling rod; 703, baffle; 704, pulling spring; 705, limiting plate; 8, connecting assembly; 801, connecting plate; 802, water collecting cylinder; 9, water distribution assembly; 901, water distribution plate; 902, arc plate; 903, water flow channel; 904, water through hole; 10, transmission assembly; 1001, supporting plate; 1002, shaft; 1003, spur rack; 1004, transmission gear; 11, pressing assembly; 1101, threaded rod; 1102, connecting rod; 1103, pressing head. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] Embodiment 1:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, a check valve with impact resistance of the present invention comprises a valve seat 1, the valve seat 1 is installed in a pipeline 2, a control component 3 adapted to the valve seat 1 is arranged in the pipeline 2, a friction component 4 is arranged on the control component 3, a water storage component 5 connected to the friction component 4 is arranged on the pipeline 2, an extrusion component 6 for pressurizing is arranged on the water storage component 5, and the water storage component 5 is connected to the pipeline 2;

[0035] A pulling component 7 is provided inside the pipeline 2, a connecting component 8 is provided on the pulling component 7, a water distribution component 9 is provided on the connecting component 8, a transmission component 10 is provided on the pulling component 7, a pressing component 11 is provided between the squeezing component 6 and the transmission component 10, and the pressing component 11 acts on the squeezing component 6 to force the squeezing component 6 to squeeze the water in the water storage component 5;

[0036] When the water flow stops suddenly, the water flows back and impacts the water distribution component 9. The water distribution component 9 disperses the water flow, and the water storage component 5 stores the backflow water to achieve an anti-impact effect.

[0037] Working principle: The device is installed on the pipe 2 which is prone to water hammer effect. When the water flows normally, the water pressure generates a force on the control component 3, forcing the control component 3 to separate from the valve seat 1, so that the water flows from the valve seat 1 into the pipe 2. The water flows through the control component 3, the outside of the friction component 4, the pulling component 7, the connecting component 8 and the water distribution component 9 to the downstream of the pipe 2. At the same time, the control component 3 drives the friction component 4 to move, so that the friction component 4 drives the squeezing component 6 to move, so that the squeezing component 6 squeezes the water in the water storage component 5 and guides the water into the pipe 2 to flow away; when the liquid stops suddenly, such as the pump stops suddenly, the control component 3 is not subjected to force, so that the control component 3 slowly closes. Under the action of the friction component 4, the squeezing component 6 is forced to move, so that the water storage space of the water storage component 5 increases. When the valve seat 1 and the control component 3 are closed, the water flows back. First, the water distribution component 9 is impacted, and the water distribution component 9 disperses the water flow into small streams, thereby reducing the impact force of the water flow, and the water is introduced into the connecting component 8 to the water storage component 5 through the water distribution component 9. The water storage component 5 will store the impacted water to achieve a buffering effect on the water flow, thereby further reducing the impact of the water flow; in summary, the check valve with impact resistance in the present application can achieve the ability to control the water flow. When the liquid stops suddenly, it can achieve the slow closing function of the control component 3 to reduce the phenomenon of sudden stop of the water flow. When the water hammer effect occurs, the refluxed water can be dispersed in time to reduce the impact force of the water flow, and the storage buffering effect of the water flow can be achieved to further reduce the impact of the water flow, thereby greatly reducing the impact force of the water flow on the pipeline 2, the valve seat 1 and the control component 3, slowing down wear, ensuring the safe and stable operation of the pipeline 2 system, improving the stability of the system, and improving the service life of the system.

[0038] Embodiment 2:

[0039] like Figure 2 and Figure 4 As shown, a check valve with impact resistance of the present invention, the control component 3 includes a fixed plate 301 arranged in the pipeline 2, a control rod 302 is arranged on the fixed plate 301, the control rod 302 passes through the fixed plate 301, a valve plate 303 adapted to the valve seat 1 is arranged at the end of the control rod 302, and a control spring 304 sleeved on the outer ring of the control rod 302 is arranged between the valve plate 303 and the fixed plate 301.

[0040] like Figure 2 , Figure 4 and Figure 5 As shown, a check valve with impact resistance of the present invention, the friction component 4 includes a friction cylinder 401 arranged on a fixed plate 301, a control rod 302 passes through the friction cylinder 401, a friction piston 402 adapted to the friction cylinder 401 is arranged at the end of the control rod 302, the friction piston 402 is located inside the friction cylinder 401, the friction cylinder 401 is connected to an air guide pipe 403 passing through the pipeline 2, an electromagnetic valve 404 is installed on the air guide pipe 403, and the other end of the air guide pipe 403 is connected to the water storage component 5.

[0041] like Figure 1 , Figure 2 and Figure 5 As shown, a check valve with impact resistance of the present invention, the water storage component 5 includes a water tank 501 arranged on the pipeline 2, the water tank 501 is connected with the friction cylinder 401 through the air guide pipe 403, and the water tank 501 is provided with a water inlet pipe 502 and a water outlet pipe 503, the diameter of the water inlet pipe 502 is larger than that of the water outlet pipe 503, and the water inlet pipe 502 and the water outlet pipe 503 are both installed with a one-way valve.

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, a check valve with impact resistance of the present invention, the extrusion assembly 6 includes an extrusion rod 601 arranged on the water tank 501, the extrusion rod 601 penetrates the water tank 501, the end of the extrusion rod 601 is provided with an extrusion piston 602 located inside the water tank 501, the other end of the extrusion rod 601 is provided with a contact plate 603, and an extrusion spring 604 arranged on the outer ring of the extrusion rod 601 is provided between the contact plate 603 and the water tank 501.

[0043] like Figure 2 , Figure 3 and Figure 7As shown, a check valve with impact resistance of the present invention, the pulling assembly 7 includes a mounting plate 701 arranged inside the pipeline 2, a pulling rod 702 is arranged on the mounting plate 701, the pulling rod 702 passes through the mounting plate 701, a baffle 703 is arranged on the pulling rod 702, a pulling spring 704 is arranged between the baffle 703 and the mounting plate 701 and is sleeved on the outer ring of the pulling rod 702, and a limiting plate 705 is arranged on the side of the pulling rod 702 away from the baffle 703.

[0044] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, a check valve with impact resistance of the present invention, the connecting assembly 8 includes a connecting plate 801 arranged on the pull rod 702, and a water collecting cylinder 802 adapted to the pipeline 2 is arranged on the connecting plate 801, the connecting plate 801 is connected to the edge of the water collecting cylinder 802, and the connecting plate 801 is inclined.

[0045] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, a check valve with impact resistance of the present invention, the water distribution component 9 includes a water distribution plate 901 arranged on the water collecting cylinder 802, the water distribution plate 901 is inclined, an arc plate 902 is arranged between the two water distribution plates 901, a water flow channel 903 is formed between the arc plate 902 and the water distribution plate 901, the water flow channel 903 is connected to the water collecting cylinder 802, and a water hole 904 is arranged on the water collecting cylinder 802.

[0046] like Figure 2 , Figure 3 and Fig. 9 As shown, a check valve with impact resistance of the present invention, the transmission assembly 10 includes a support plate 1001 arranged on the pipeline 2, the support plate 1001 is connected to a shaft 1002 by a bearing, the shaft 1002 passes through the pipeline 2, a straight rack 1003 is arranged on the pull rod 702, and a transmission gear 1004 meshing with the straight rack 1003 is fixedly sleeved on the shaft 1002.

[0047] like Figure 1 , Figure 2 , Figure 3 and Fig.10As shown, a check valve with impact resistance of the present invention, the pressing assembly 11 includes a threaded rod 1101 whose bearing is connected to a support plate 1001, the threaded rod 1101 is connected to a shaft rod 1002, a connecting rod 1102 is threadedly connected to the threaded rod 1101, the connecting rod 1102 passes through the support plate 1001, the threaded rod 1101 threads through the connecting rod 1102, and a pressing head 1103 adapted to the contact plate 603 is provided at the end of the connecting rod 1102, and the pressing head 1103 is located above the contact plate 603.

[0048] Working principle: The device is installed on the pipe 2 which is prone to water hammer effect. When the water flows normally, the water pressure exerts a force on the valve plate 303, so that the valve plate 303 moves and separates from the valve seat 1, so that the water flows into the downstream of the pipe 2 from between the valve plate 303 and the valve seat 1. The movement of the valve plate 303 drives the control rod 302 to move, so that the control rod 302 slides on the fixed plate 301, so that the control spring 304 is compressed. At the same time, the control rod 302 drives the friction piston 402 to move in the friction cylinder 401, so that the friction piston 402 moves. The plug 402 squeezes the gas in the friction cylinder 401, opens the solenoid valve 404, and under the action of the air guide pipe 403, the gas enters the upper part of the water tank 501, so that the gas pushes the squeezing piston 602 to move in the water tank 501, so that the squeezing piston 602 moves to the position of the water inlet pipe 502 and the water outlet pipe 503, closes the solenoid valve 404, and disconnects the connection between the water tank 501 and the friction cylinder 401, thereby reducing the water storage space in the water tank 501, forcing very little water to enter the water tank 501, and ensuring the normal passage of water flow;

[0049] At this time, water flows from the valve seat 1 into the pipe 2, and the water flows through the fixed plate 301, the outer side of the friction cylinder 401, the mounting plate 701, the water collecting cylinder 802 and the water flow channel 903 to the downstream of the pipe 2;

[0050] When the liquid stops suddenly, such as the pump stops suddenly, since the valve plate 303 is not affected by the water pressure, the solenoid valve 404 is opened. Since the control spring 304 needs to return to its original state, the valve plate 303 and the valve seat 1 are slowly closed under the action of the control spring 304. At this time, the friction piston 402 generates friction in the friction cylinder 401 and retreats, consuming energy. At this time, the gas in the water tank 501 enters the friction cylinder 401, causing the gas in the friction cylinder 401 to gradually increase until the valve plate 303 and the valve seat 1 are completely closed, and the solenoid valve 404 is closed. At this time, the gas in the upper part of the water tank 501 is reduced, causing the extrusion piston 602 to move upward, forcing the water storage space in the water tank 501 to increase, until the contact plate 603 moves to the pressing head 1103, completing the water storage preparation work;

[0051] The backflow of water first impacts the water dividing plate 901 and the arc plate 902, so that the water dividing plate 901 disperses the water flow, so that the water flow is dispersed into small streams, reducing the impact force of the water flow. At this time, due to the action of the mounting plate 701 and the limiting plate 705, the movement of the water collecting cylinder 802, the connecting plate 801, the pulling rod 702, the pulling spring 704, the limiting plate 705 and the baffle 703 are restricted. Then the water flows through the water flow channel 903 and the water through hole 904, so that the water flows into the water collecting cylinder 802 and flows back to the water storage tank 501. At this time, when the water flow still generates a large impact force, the water flow will enter the water storage tank 501 through the water inlet pipe 502, so that the water flow with impact force is introduced into the water storage tank 501 for storage, realizing a buffering effect on the water flow, thereby further reducing the impact of the water flow.

[0052] Since the water tank 501 stores refluxed water, the water in the water tank 501 needs to be led out to the pipe 2. When the water is flowing normally, the valve plate 303 opens, forcing the friction piston 402 to move in the friction cylinder 401, causing the gas in the friction cylinder 401 to enter the upper part of the water tank 501, causing the squeezing piston 602 to squeeze the water in the water tank 501, which can achieve the goal of leading out a part of the water flow, but it is impossible to lead out all the water flow, which easily causes the water storage capacity of the water tank 501 to decrease.

[0053] At the moment when the valve plate 303 is opened, due to the setting of the two-port diameter of the water collecting cylinder 802, that is, the upstream section of the water collecting cylinder 802 has a large pipe opening, and the downstream section has a small pipe opening, when the water flow is released, it will enter the water collecting cylinder 802 for convergence and cannot pass through quickly, thereby causing the water flow to exert a force on the water collecting cylinder 802, causing the water collecting cylinder 802 to move downstream, and the water collecting cylinder 802 drives the connecting plate 801 to move, and the connecting plate 801 drives the pulling rod 702 to move. Under the action of the mounting plate 701, the pulling rod 702 moves forward, and the pulling rod 702 drives the baffle 703 to move. At this time, the pulling spring 704 is stretched, and the movement of the pulling rod 702 drives the spur rack 1003 to move, and the spur rack 1003 drives the transmission The movable gear 1004 rotates, forcing the shaft rod 1002 to rotate. The rotation of the shaft rod 1002 drives the threaded rod 1101 to rotate. Under the guidance of the support plate 1001, the threaded rod 1101 drives the connecting rod 1102 to move downward, forcing the connecting rod 1102 to drive the pressing head 1103 to move toward the contact plate 603, until the pressing head 1103 presses the contact plate 603 to a reasonable position, and the contact plate 603 drives the extrusion rod 601 to move, and the extrusion rod 601 drives the extrusion piston 602 to move, until the extrusion piston 602 moves to the position where the water outlet pipe 503 is connected to the water storage tank 501, so that the extrusion piston 602 can discharge all the water in the water storage tank 501 into the pipeline 2 through the water outlet pipe 503;

[0054] As water flows continuously into the water collecting tube 802, the water inside the water collecting tube 802 is led to the downstream, thereby reducing the effect of the water flow on the water collecting tube 802, that is, the water flow is conducted. At this time, the pulling spring 704 needs to be restored to its original state, so that the pulling rod 702, the connecting plate 801 and the water collecting tube 802 retreat to their original positions. The movement of the pulling rod 702 drives the spur rack 1003 to move in the opposite direction, and the spur rack 1003 drives the transmission gear 1004 to rotate in the opposite direction, forcing the shaft rod 1002 to rotate in the opposite direction. The rotation of the shaft rod 1002 drives the threaded rod 1101 to rotate in the opposite direction. Under the guiding action, the threaded rod 1101 drives the connecting rod 1102 to move upward, forcing the connecting rod 1102 to drive the pressing head 1103 to move upward. At this time, under the action of the extrusion spring 604, the contact plate 603 moves upward. At this time, the pressing head 1103 and the contact plate 603 move up synchronously until the contact plate 603 moves to a reasonable height. The pressing head 1103 continues to move up and separates from the contact plate 603, so that the pressing head 1103 returns to its original position, and the contact plate 603 returns to the height position when the gas in the friction cylinder 401 enters the upper part of the water tank 501.

[0055] The setting of the control component 3 can realize the control effect on the water flow and the control of the on and off of the water flow. When it is opened, the water flows through, and when it is closed, the water flow is disconnected, which can realize the automatic closing function and meet the principle requirements of the check valve. At the same time, it can realize the function of slow closing, effectively reduce the sudden stop of the fluid, reduce the generation of the water hammer effect, and at the same time can have an effect on the friction component 4; the setting of the friction component 4 can realize the conversion of the gas on the upper part of the water storage component 5, improve the control of the water storage component 5 and the extrusion component 6, and generate friction between the friction piston 402 and the friction component 4, thereby further reducing the closing of the valve plate 303, so that the valve plate 303 closes slowly; the setting of the water storage component 5 can realize the storage effect of the reflux of the water flow, thereby realizing The present invention can buffer the water flow and reduce the impact force of the water flow. At the same time, it can store the gas in the friction cylinder 401, realize the adjustment of the control rod 302, improve the stability of the friction piston 402, and avoid the friction piston 402 from moving back and forth; the setting of the extrusion component 6 can realize the water in the water storage tank 501 to be discharged into the pipeline 2, and at the same time can adjust the water storage volume of the water storage tank 501, improve the water storage capacity of the water storage tank 501, so that the water storage tank 501 can store more reflux water, thereby improving the buffering capacity and greatly improving the impact resistance; the setting of the pulling component 7 can realize the feedback effect on the positive water flow. The force of the water flow on the water collecting cylinder 802 at the moment when the valve plate 303 is opened makes the pulling rod 702 and the pulling spring 704 produce a pulling effect, thereby improving the device The supporting effect can improve the stability. The pulling spring 704 can restore the pulling rod 702 and the water collecting cylinder 802 to their original positions after the water flow stabilizes. The setting of the limiting plate 705 can achieve the limiting ability. When the water flows back, it will generate a force on the water collecting cylinder 802. At this time, the mounting plate 701 and the limiting plate 705 act to limit the free movement of the water collecting cylinder 802; the setting of the connecting component 8 can realize the connection between the pulling rod 702 and the water collecting cylinder 802, improve the rationality of the device, and achieve a stable connection. At the same time, the connecting plate 801 can disperse the water to avoid the water flow from having a large impact on the water collecting cylinder 802, thereby increasing the service life of the water collecting cylinder 802; the setting of the water distribution component 9 can achieve the dispersion of the refluxed water, thereby reducing the impact of the water flow. The function is to further improve the impact resistance. At the same time, the water flows into the water collecting cylinder 802 through the water flow channel 903 and the water hole 904, so as to realize the smooth circulation of the water flow, which is convenient for the storage of the return water in the water tank 501. The setting of the transmission component 10 can transmit the force of the movement of the pulling rod 702, and convert the linear motion into circular motion, so as to realize the control effect on the pressing component 11 and improve the transmission capacity of the device. The setting of the pressing component 11 can realize the effect on the squeezing component 6, so as to realize the effect of the squeezing component 6 on the water tank 501, so that the water in the water tank 501 is completely squeezed out, thereby improving the water storage capacity and drainage capacity of the water tank 501, avoiding the retention of the return water that was not completely drained in the water tank 501, and improving the rationality and practicality of the device.

[0056] This solution can achieve the ability to control the water flow. When the liquid stops suddenly, it can achieve the slow closing function of the valve plate 303 to reduce the phenomenon of sudden stop of the water flow. When the water hammer effect occurs, the backflow water can be dispersed in time to reduce the impact force of the water flow, and the storage and buffering effect of the water flow can be achieved to further reduce the impact of the water flow, thereby greatly reducing the impact force of the water flow on the pipeline 2, the valve seat 1 and the control component 3, slowing down the wear, ensuring the safe and stable operation of the pipeline 2 system, improving the stability of the system, and increasing the service life of the system; this solution reduces the impact force of the water flow from multiple aspects. On the one hand, it can achieve the slow closing function of the valve plate 303, reduce the sudden stop of the fluid, and reduce the occurrence of the water hammer effect. On the other hand, the water flow channel 903 is optimized. When the water hammer effect occurs, the impact force of the water flow can be reduced, and the backflow water can be stored to achieve a buffering effect, further reducing the impact force of the water flow, and greatly improving the impact resistance of the system.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A check valve with impact resistance, characterized in that: The invention comprises a valve seat (1), wherein the valve seat (1) is installed in a pipeline (2), wherein a control component (3) adapted to the valve seat (1) is arranged in the pipeline (2), wherein a friction component (4) is arranged on the control component (3), wherein the friction component (4) comprises a friction cylinder (401) and an air guide pipe (403), wherein a water storage component (5) connected to the friction component (4) is arranged on the pipeline (2), wherein an extrusion component (6) for pressurizing is arranged on the water storage component (5), and wherein the water storage component (5) is connected to the pipeline (2); wherein a pulling component (7) is arranged inside the pipeline (2), wherein a connecting component (8) is arranged on the pulling component (7), and wherein the connecting component (8) ) is provided with a water distribution component (9), the pulling component (7) is provided with a transmission component (10), a pressing component (11) is provided between the squeezing component (6) and the transmission component (10), the pressing component (11) acts on the squeezing component (6) to force the squeezing component (6) to squeeze the water in the water storage component (5); wherein, when the water flow suddenly stops, the water flow flows back to impact the water distribution component (9), the water distribution component (9) disperses the water flow, and the water storage component (5) stores the backflow water to achieve an impact resistance effect; the water storage component (5) comprises a water storage tank (501) provided on the pipeline (2), the water storage tank (501) is connected to the air guide pipe (4) 03) is connected to the friction cylinder (401), the water tank (501) is provided with a water inlet pipe (502) and a water outlet pipe (503), the diameter of the water inlet pipe (502) is larger than the water outlet pipe (503), and both the water inlet pipe (502) and the water outlet pipe (503) are installed with a one-way valve; the extrusion assembly (6) comprises an extrusion rod (601) provided on the water tank (501), the extrusion rod (601) penetrates the water tank (501), the end of the extrusion rod (601) is provided with an extrusion piston (602) located inside the water tank (501), and the other end of the extrusion rod (601) is provided with a contact plate (603), the contact plate An extrusion spring (604) sleeved on the outer ring of the extrusion rod (601) is arranged between the water storage tank (501); the pulling assembly (7) comprises a mounting plate (701) arranged inside the pipe (2); a pulling rod (702) is arranged on the mounting plate (701); the pulling rod (702) passes through the mounting plate (701); a baffle (703) is arranged on the pulling rod (702); a pulling spring (704) sleeved on the outer ring of the pulling rod (702) is arranged between the baffle (703) and the mounting plate (701); a limiting plate (705) is arranged on the side of the pulling rod (702) away from the baffle (703);The connecting assembly (8) comprises a connecting plate (801) arranged on the pulling rod (702), a water collecting cylinder (802) matched with the pipeline (2) being arranged on the connecting plate (801), the connecting plate (801) being connected to the edge of the water collecting cylinder (802), and the connecting plate (801) being arranged at an angle; the transmission assembly (10) comprises a supporting plate (1001) arranged on the pipeline (2), a shaft (1002) being connected to a bearing on the supporting plate (1001), the shaft (1002) passing through the pipeline (2), a spur rack (1003) being arranged on the pulling rod (702), a fixed sleeve on the shaft (1002) being matched with the pipeline (2) and a guide screw (1003) being provided on the shaft (1002). The pressing assembly (11) comprises a threaded rod (1101) connected to the support plate (1001) by a bearing, the threaded rod (1101) being connected to the shaft rod (1002), a connecting rod (1102) being threadedly connected to the threaded rod (1101), the connecting rod (1102) passing through the support plate (1001), the threaded rod (1101) threadedly passing through the connecting rod (1102), a pressing head (1103) adapted to the contact plate (603) being provided at the end of the connecting rod (1102), the pressing head (1103) being located above the contact plate (603). ; 2. A check valve with impact resistance according to claim 1, characterized in that: The control assembly (3) comprises a fixed plate (301) arranged in the pipeline (2), a control rod (302) being arranged on the fixed plate (301), the control rod (302) penetrating the fixed plate (301), a valve plate (303) matching the valve seat (1) being arranged at the end of the control rod (302), and a control spring (304) sleeved on the outer ring of the control rod (302) being arranged between the valve plate (303) and the fixed plate (301).

3. The anti-shock check valve according to claim 2, characterized in that: The friction assembly (4) comprises a friction cylinder (401) arranged on the fixing plate (301); the control rod (302) passes through the friction cylinder (401); a friction piston (402) matched with the friction cylinder (401) is arranged at the end of the control rod (302); the friction piston (402) is located inside the friction cylinder (401); the friction cylinder (401) is connected to an air guide pipe (403) passing through the pipeline (2); a solenoid valve (404) is installed on the air guide pipe (403); and the other end of the air guide pipe (403) is connected to the water storage assembly (5).

4. The anti-shock check valve according to claim 3, characterized in that: The water distribution assembly (9) comprises a water distribution plate (901) arranged on the water collection cylinder (802); the water distribution plate (901) is arranged at an angle; an arc plate (902) is arranged between two water distribution plates (901); a water flow channel (903) is formed between the arc plate (902) and the water distribution plate (901); the water flow channel (903) is connected to the water collection cylinder (802); and a water through hole (904) is arranged on the water collection cylinder (802).

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