High-efficiency waterproof hammer check valve

Abstract

The utility model relates to check valve technical field discloses a kind of efficient water hammer check valves, including support panel one, the right side top of support panel one is fixedly connected with lifting ring connecting plate one, the right side of lifting ring connecting plate one is fixedly connected with support panel two, the bottom of lifting ring connecting plate one is fixedly connected with lifting ring connecting plate two, the right side bottom of support panel one is fixedly connected with lifting ring connecting plate three, the right side rear end of support panel one is fixedly connected with entity connecting plate.The utility model in the present application, therefore, the closing time can be optimized and adjusted according to actual situation, the slow-closing stroke can release excessive water hammer pressure, so that system pressure gradually flattens to safe and stable pressure value, while check valve is opened by water flow rate, only need to adjust the locking nut at the end of damper to make the valve stable to corresponding opening degree, avoid the problem of broken shaft caused by repeated shaking of butterfly plate under normal condition of rated working condition.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and in particular to a high-efficiency waterproof check valve against water hammer. Background Technology

[0002] Check valves, also known as backflow valves, non-return valves, back pressure valves, and one-way valves, mainly rely on the force generated by the flow of the medium in the pipeline to automatically open and close. Their function is to prevent backflow of the medium, prevent pump and drive motor reversal, and prevent the medium from leaking from the container. Depending on the material, check valves can be used in pipelines with various media and are widely used in the petroleum refining, long-distance pipelines, chemical, papermaking, pharmaceutical, and gas industries. At the moment the check valve closes, the medium rapidly drops from its maximum backflow velocity to zero, while the pressure rapidly increases. Water hammer is a pressure wave caused by transient flow in pressure pipelines, resulting from the incompressibility of the fluid and the inertia of fluid motion.

[0003] During pipeline fluid transport, sudden changes in fluid velocity can trigger pressure shock waves, generating a water hammer effect. The sudden pressure surge caused by water hammer can cause pipeline rupture, while the sudden pressure drop can cause pipeline collapse. In the pipeline system of water pump units, water hammer impact may cause the water pump unit to experience reverse force, accelerating mechanical wear. Pipeline rupture or equipment damage can lead to work stoppages, production halts, and losses. Existing check valves installed in transport systems to combat water hammer cannot activate the drop hammer to close before the water flow velocity reaches zero, cannot achieve a smooth and gradual closing to reduce water hammer pressure rise, have significant impact, and lack applicability, as they cannot adjust the flow velocity required for the maximum valve opening. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency water hammer check valve, aiming to improve the existing technology's inability to activate the drop hammer closure before the water flow velocity reaches zero, the inability to achieve a smooth transition between closing and closing, reduce water hammer pressure rise, and minimize impact. Furthermore, it suffers from limited applicability and cannot adjust the flow velocity required for the valve's maximum opening.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency waterproof hammer check valve, comprising a support panel one, a lifting ring connecting plate one fixedly connected to the top right side of the support panel one, a support panel two fixedly connected to the right side of the lifting ring connecting plate one, a lifting ring connecting plate two fixedly connected to the bottom of the lifting ring connecting plate one, a lifting ring connecting plate three fixedly connected to the bottom right side of the support panel one, a solid connecting plate fixedly connected to the rear right side of the support panel one, a trunnion bearing support one rotatably connected to the front side of the solid connecting plate, and a damping hydraulic cylinder connected to the outer wall of the trunnion bearing support one. First, a hydraulic control valve assembly is fixedly connected to the outer wall of the first damping hydraulic cylinder, and a second damping hydraulic cylinder assembly is fixedly connected to the top of the first damping hydraulic cylinder. A diamond-shaped bracket is provided on the rear side of the second bracket panel, and a check valve is provided on the front left side of the first bracket panel. An extension plate crank panel is rotatably connected to the outer wall of the second bracket panel, and an extension plate crank panel is provided on the outer wall of the first extension plate crank panel. A crank bushing is rotatably connected to the rear top of the first and second extension plate crank panels, and a weight block is provided on the front side between adjacent extension plate crank panels.

[0006] As a further description of the above technical solution:

[0007] The right front end of the bracket panel two is rotatably connected to a self-lubricating bearing two, and the other end of the self-lubricating bearing two is fixedly connected to a main shaft bearing support.

[0008] As a further description of the above technical solution:

[0009] The right rear end of the second bracket panel is rotatably connected to a pin, and the left rear end of the first bracket panel is rotatably connected to a trunnion bearing support.

[0010] As a further description of the above technical solution:

[0011] An extension plate crank panel three is provided on the rear side between adjacent bracket panel two and bracket panel one.

[0012] As a further description of the above technical solution:

[0013] A hanging ring is fixedly connected to the top of the weight block.

[0014] As a further description of the above technical solution:

[0015] A self-lubricating bearing is provided on the left front end of the bracket panel.

[0016] As a further description of the above technical solution:

[0017] An opening pointer is fixedly connected to the outer wall of the main shaft bearing support.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, by connecting bracket panel one and bracket panel two through a lifting ring connecting plate one, the hydraulic control valve group and damping hydraulic cylinder one are assembled with screws, and the main shaft bearing support passes through bracket panel two and is fitted into self-lubricating bearing two. Therefore, the closing time can be optimized and adjusted according to the actual situation. The adjustment time is not affected by temperature. This slow closing stroke can release excessive water hammer pressure, so that the system pressure gradually flattens to a safe and stable pressure value. At the same time, the check valve opens the valve based on the water flow velocity. When it reaches 1.6m / s, the valve can be fully opened. However, for some low flow rate pump stations, the valve cannot be fully opened. In this case, it is only necessary to adjust the locking nut at the end of the damper to stabilize the valve to the corresponding opening degree, avoiding the problem of shaft breakage caused by repeated shaking of the butterfly plate under rated operating conditions of the pump station. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a high-efficiency waterproof hammer check valve proposed in this utility model;

[0021] Figure 2 This is a partial structural diagram of a high-efficiency waterproof hammer check valve proposed in this utility model;

[0022] Figure 3 This is a structural diagram of a high-efficiency waterproof hammer check valve proposed in this utility model;

[0023] Figure 4 This is a partial structural diagram of a high-efficiency waterproof check valve proposed in this utility model;

[0024] Figure 5 This is a partial structural diagram of a high-efficiency waterproof hammer check valve proposed in this utility model;

[0025] Figure 6 This is a side view of a high-efficiency waterproof hammer check valve proposed in this utility model.

[0026] Legend:

[0027] 1. Lifting eye connecting plate one; 2. Lifting eye connecting plate two; 3. Bracket panel one; 4. Lifting eye connecting plate three; 5. Solid connecting plate; 6. Bracket panel two; 7. Crank bushing; 8. Extended plate crank panel one; 9. Extended plate crank panel two; 10. Hydraulic control valve assembly; 11. Damping hydraulic cylinder one; 12. Diamond bracket; 13. Extended plate crank panel three; 14. Damping hydraulic cylinder assembly two; 15. Weight block; 16. Opening pointer; 17. Check valve; 18. Main shaft bearing support; 19. Trunnion bearing support one; 20. Pin; 21. Trunnion bearing support two; 22. Self-lubricating bearing one; 23. Self-lubricating bearing two; 24. Hanging ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a high-efficiency waterproof hammer check valve, comprising a support panel 3, a lifting ring connecting plate 1 fixedly connected to the top right side of the support panel 3, a support panel 6 fixedly connected to the right side of the lifting ring connecting plate 1, a lifting ring connecting plate 2 fixedly connected to the bottom of the lifting ring connecting plate 1, a lifting ring connecting plate 3 4 fixedly connected to the bottom right side of the support panel 3, a solid connecting plate 5 fixedly connected to the rear right side of the support panel 3, a trunnion bearing support 19 rotatably connected to the front side of the solid connecting plate 5, and a damping hydraulic cylinder 11 connected to the outer wall of the trunnion bearing support 19. A hydraulic control valve assembly 10 is fixedly connected to the outer wall of the first 11. A damping hydraulic cylinder assembly 2 14 is fixedly connected to the top of the damping hydraulic cylinder first 11. A diamond-shaped bracket 12 is provided on the rear side of the bracket panel 2 6. A check valve 17 is provided on the front left side of the bracket panel 3. An extended plate crank panel 1 8 is rotatably connected to the outer wall of the bracket panel 2 6. An extended plate crank panel 2 9 is provided on the outer wall of the extended plate crank panel 1 8. A crank bushing 7 is rotatably connected to the rear top of the extended plate crank panel 1 8 and the extended plate crank panel 2 9. A weight block 15 is provided on the front side between adjacent extended plate crank panels 1 8 and extended plate crank panels 2 9.

[0030] Specifically, a lifting ring connecting plate 3 4 is fixedly connected to the bottom right side of the bracket panel 3. The lifting ring connecting plate 3 4 further enhances the connection function of the bracket panel 3. A solid connecting plate 5 is fixedly connected to the rear right side of the bracket panel 3. The solid connecting plate 5 is made of thick material and has high strength. The front side of the solid connecting plate 5 is rotatably connected to the trunnion bearing support 19 through rotating connecting parts such as a rotating shaft. The trunnion bearing support 19 can rotate flexibly. The outer wall of the trunnion bearing support 19 is connected to the damping hydraulic cylinder 11 to achieve stable buffering and positioning. The outer wall of the damping hydraulic cylinder 11 is fixedly connected to the hydraulic control valve group 10.

[0031] The hydraulic control valve assembly 10 can precisely control the hydraulic oil flow and pressure of the damping hydraulic cylinder 11, thereby achieving precise control of the movement of the damping hydraulic cylinder 11. The top of the damping hydraulic cylinder 11 is fixedly connected to the damping hydraulic cylinder assembly 2 14, which works in conjunction with the damping hydraulic cylinder 11. A diamond-shaped bracket 12 is provided on the rear side of the bracket panel 2 6. The diamond-shaped bracket 12 has a stable structure and high strength, which can enhance the rigidity and stability of the entire structure. A check valve 17 is provided on the front left side of the bracket panel 3. The check valve 17 can effectively prevent the backflow of the medium and ensure the safety and stability of operation.

[0032] Please see the appendix Figure 4 - Appendix Figure 6 A self-lubricating bearing 23 is rotatably connected to the front right side of bracket panel 26. A main shaft bearing support 18 is fixedly connected to the other end of the self-lubricating bearing 23. An extended plate crank panel 3 13 is provided on the rear side between adjacent bracket panel 26 and bracket panel 13. A hanging ring 24 is fixedly connected to the top of the weight block 15. A pin 20 is rotatably connected to the rear right side of bracket panel 26. A trunnion bearing support 21 is rotatably connected to the rear left side of bracket panel 13. A self-lubricating bearing 22 is provided at the front left side of bracket panel 13. An opening pointer 16 is fixedly connected to the outer wall of the main shaft bearing support 18.

[0033] Specifically, an extended crank panel 3 13 is provided on the rear side between adjacent support panel 2 6 and support panel 1 3. The extended crank panel 3 13 cooperate with each other. The weight block 15 is used for adjustment in the whole structure. The top of the weight block 15 is fixedly connected to the hanging ring 24. The hanging ring 24 is reasonably designed and facilitates the installation, disassembly or position adjustment of the weight block 15 by hoisting equipment. The right rear end of support panel 2 6 is rotatably connected to the pin shaft 20. The pin shaft 20 is a key component for connection and rotation. The left rear end of support panel 1 3 is rotatably connected to the trunnion bearing support 21. The trunnion bearing support 21 also has a stable support and rotation function. The left front end of support panel 1 3 is provided with a self-lubricating bearing 22. The self-lubricating bearing 22 and the self-lubricating bearing 23 complement each other to ensure the smooth operation of the rotating parts in the whole structure.

[0034] Working principle: The bracket panel 1 (3) and bracket panel 2 (6) are welded together via lifting eye connecting plate 1 (1), lifting eye connecting plate 2 (2), lifting eye connecting plate 3 (4), and solid connecting plate 5. This, combined with the diamond bracket 12, crank bushing 7, and extended crank panel 1 (8) and extended crank panel 2 (9) are welded together to form extended crank panel 3 (13). The hydraulic control valve assembly 10 and damping hydraulic cylinder 1 (11) are assembled with screws to form damping hydraulic cylinder assembly 2 (14). Then, the trunnion of damping hydraulic cylinder 1 (11) is inserted... The trunnion bearing support 19 and trunnion bearing support 21 of the rhomboid bracket 12 trunnion hole are fitted together. The trunnion bearing support 19 is fixed to the bracket panel 2 6 by bolts, and the trunnion bearing support 21 is fixed to the bracket panel 3. The self-lubricating bearing 22 is installed into the shaft hole of the bracket panel 3. Then the self-lubricating bearing 23 is installed into the tail of the crank sleeve 7. The head of the crank sleeve 7 is fitted into the self-lubricating bearing 22 on the bracket. The main shaft bearing support 18 passes through the bracket panel 2 6 and is fitted into the self-lubricating bearing 23.

[0035] The main shaft bearing support 18 is fixed to the bracket panel 2 6 with bolts. A long screw is passed through the main shaft bearing support 18 and screwed into the bottom threaded hole of the crank sleeve 7. The other end of the long screw is screwed into the opening pointer 16 and the cap nut. Then, the damping hydraulic cylinder assembly 2 14 is connected to the extended plate crank panel 3 13 by the pin 20. After that, the weight block 15 is fixed in the middle of the extended plate crank panel 3 13 by the screw and nut. Finally, the entire assembled actuator is connected to the check valve 17 through the valve flange. Therefore, the closing time can be adjusted according to the actual situation. The system can be optimized and adjusted according to the actual situation. The adjustment time is not affected by external conditions such as temperature and pressure. The slow closing stroke can release excessive water hammer pressure and gradually smooth the system pressure to a safe and stable pressure value. At the same time, the check valve 17 opens the valve based on the water flow velocity. When it reaches 1.6m / s, the valve can be fully opened. However, for some low flow velocity pump stations, the valve cannot be fully opened. In this case, it is only necessary to adjust the locking nut at the end of the damper to stabilize the valve to the corresponding opening degree, so as to avoid the problem of shaft breakage caused by repeated shaking of the butterfly plate under the rated operating conditions of the pump station.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency waterproof hammer check valve, comprising a support panel (3), characterized in that: A lifting ring connecting plate 1 (1) is fixedly connected to the top right side of the support panel 1 (3). A support panel 2 (6) is fixedly connected to the right side of the lifting ring connecting plate 1 (1). A lifting ring connecting plate 2 (2) is fixedly connected to the bottom of the lifting ring connecting plate 1 (1). A lifting ring connecting plate 3 (4) is fixedly connected to the bottom right side of the support panel 1 (3). A solid connecting plate (5) is fixedly connected to the rear right side of the support panel 1 (3). A trunnion bearing support 1 (19) is rotatably connected to the front side of the solid connecting plate (5). A damping hydraulic cylinder 1 (11) is connected to the outer wall of the trunnion bearing support 1 (19). A hydraulic control valve assembly (10) is fixedly connected to the outer wall of the damping hydraulic cylinder 1 (11). The top of the first damping hydraulic cylinder (11) is fixedly connected to the second damping hydraulic cylinder assembly (14). A diamond-shaped bracket (12) is provided on the rear side of the second bracket panel (6). A check valve (17) is provided on the left front end of the first bracket panel (3). An extension plate crank panel (8) is rotatably connected to the outer wall of the second bracket panel (6). An extension plate crank panel (9) is provided on the outer wall of the first extension plate crank panel (8). A crank bushing (7) is rotatably connected to the rear top of the first extension plate crank panel (8) and the second extension plate crank panel (9). A weight block (15) is provided on the front side between adjacent extension plate crank panels (8) and the second extension plate crank panel (9).

2. The high-efficiency anti-hammer check valve according to claim 1, characterized in that: The right front end of the bracket panel 2 (6) is rotatably connected to a self-lubricating bearing 2 (23), and the other end of the self-lubricating bearing 2 (23) is fixedly connected to a main shaft bearing support (18).

3. The high-efficiency anti-hammer check valve according to claim 1, characterized in that: The right rear end of the bracket panel 2 (6) is rotatably connected to a pin (20), and the left rear end of the bracket panel 1 (3) is rotatably connected to a trunnion bearing support 2 (21).

4. The high-efficiency anti-hammer check valve according to claim 1, characterized in that: An extended crank panel three (13) is provided on the rear side between adjacent bracket panel two (6) and bracket panel one (3).

5. The high-efficiency anti-hammer check valve according to claim 1, characterized in that: A hanging ring (24) is fixedly connected to the top of the weight block (15).

6. The high-efficiency anti-hammer check valve according to claim 1, characterized in that: A self-lubricating bearing (22) is provided on the left front end of the bracket panel (3).

7. The high-efficiency anti-hammer check valve according to claim 2, characterized in that: An opening pointer (16) is fixedly connected to the outer wall of the main shaft bearing support (18).

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