Anti-impact swing check valve

Abstract

The utility model relates to the technical field of check valves, and discloses an anti-impact swing check valve which comprises a protection box, a protection door is arranged at the top of the protection box, a handle is fixedly connected to the top of the right side of the protection door, the protection door is rotationally connected with the protection box through hinges, the check valve is arranged in the protection box, and the handle is fixedly connected with the handle. And connecting discs are fixedly connected to the front end and the rear end of the protection box correspondingly, a valve is rotatably connected to the interior of the check valve, a fixing plate is fixedly connected to the inner wall of the check valve, a spring is fixedly connected between the fixing plate and the valve, and a second damper is fixedly connected to the bottom of the fixing plate. The fixing plate is extruded through the valve, buffering is conducted through the spring, buffering is conducted through the first connecting block, the second inclined rod, the sliding block and the extrusion spring, buffering is conducted, the valve is protected, the service life is prolonged, a pipeline at the bottom is clamped through the arc-shaped plate, the installation stability of the check valve is improved, installation is convenient and fast, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an impact-proof swing check valve. Background Art

[0002] A check valve is also called a one-way valve or a non-return valve. Its function is to prevent the medium in the pipeline from flowing back. The check valve belongs to the automatic valve type and is mainly used in pipelines where the medium flows in one direction. It only allows the medium to flow in one direction to prevent accidents.

[0003] After searching, the existing Chinese patent announcement number is: CN219263278U, which provides a flip check valve. This patent sets the rotation center outside the flow channel, the valve disc has a long rotation arm, and the swing amplitude is large. The valve disc moves smoothly and has high stability. It effectively reduces the impact and vibration of the valve disc on the valve body and itself during the opening and closing of the valve, and prevents the occurrence of water hammer.

[0004] Although the above patent can prevent the water hammer phenomenon, the above flip check valve still has the following problems: when the swing check valve is in use, the check valve disc opens too quickly during the process of rotating and closing, which will cause the impact force of the valve disc sealing surface on the valve seat sealing surface to be too large, which can easily damage the sealing surface, making the check valve unable to be effectively closed and reducing its service life.

[0005] In view of the above problems, an impact-proof swing check valve is proposed. Utility Model Content

[0006] The utility model aims to provide an impact-proof swing check valve, which solves the problem in the background technology that due to the closing speed being too fast, the impact force of the valve disc sealing surface on the valve seat sealing surface is too large, which is easy to damage the sealing surface, making the check valve unable to be effectively closed and reducing the service life.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-proof swing check valve, comprising a protection box, a protection door is arranged on the top of the protection box, a handle is fixedly connected to the top right side of the protection door, the protection door is rotatably connected to the protection box by a hinge, a check valve is arranged inside the protection box, a connecting disk is fixedly connected to both the front and rear ends of the protection box, a valve is rotatably connected inside the check valve, a fixing plate is fixedly connected to the inner wall of the check valve, a spring is fixedly connected between the fixing plate and the valve, a second damper is fixedly connected to the bottom of the fixing plate, a fixing disk is fixedly connected to the bottom of the second damper, and a first Damper, an extrusion plate is fixedly connected to the bottom of the first damper, and slide grooves are opened on the left and right sides of the fixed plate, and sliders are slidably connected to the inner walls of the slide grooves on the left and right sides, and extrusion springs are provided on the inner walls of the slide grooves, one end of the extrusion springs is fixedly connected to the slider, and the other end of the extrusion springs is fixedly connected to the fixed plate, and the bottom of the fixed plate is fixedly connected to a first connecting block, the bottom of the first connecting block is rotatably connected to a first oblique rod, and the first oblique rod is rotatably connected to the slider, the top of the extrusion plate is fixedly connected to a second connecting block, the top of the second connecting block is rotatably connected to a second oblique rod, and the second oblique rod is rotatably connected to the slider, and an installation assembly is provided on the inner wall of the bottom right side of the protection box.

[0008] By adopting the above technical solution, the valve is pushed upward by the water flow so that the water flows into the interior, and the valve cannot rotate in the opposite direction, so that water can only flow in but not out. The valve collides with the extrusion plate to provide buffer protection for the valve.

[0009] As a further description of the above technical solution: the installation component includes a connecting plate, the connecting plate is fixedly connected to the top right side of the protection box, and the front end of the connecting plate is fixedly connected to a motor.

[0010] By adopting the above technical solution, the motor is fixed by the connecting plate.

[0011] As a further description of the above technical solution: the output end of the motor is fixedly connected to a driving gear, and the inside of the right connecting plate is rotatably connected to a first bidirectional threaded rod.

[0012] By adopting the above technical solution, the driving gear is driven to rotate by the motor.

[0013] As a further description of the above technical solution: the outer ring of the first bidirectional threaded rod is fixedly connected with a driven gear, and the driven gear is meshingly connected with the driving gear.

[0014] By adopting the above technical solution, the driven gear is driven to rotate by the rotation of the driving gear.

[0015] As a further description of the above technical solution: the outer rings at both the front and rear ends of the first bidirectional threaded rod are threadedly connected with nut pairs.

[0016] By adopting the above technical solution, a limiting rod is arranged inside the nut pair to provide limiting guidance for the nut pair.

[0017] As a further description of the above technical solution: a moving plate is fixedly connected to the top of the nut pair, and an arc-shaped plate is fixedly connected to the opposite side of the moving plate.

[0018] By adopting the above technical solution, the pipeline connected to the check valve is clamped and installed by the arc plate.

[0019] As a further description of the above technical solution: the front end outer ring of the first bidirectional threaded rod is fixedly connected to a driving pulley, and the second bidirectional threaded rod is internally rotatably connected between the left connecting plates.

[0020] By adopting the above technical solution, the driving pulley is driven to rotate by the rotation of the first bidirectional threaded rod.

[0021] As a further description of the above technical solution: the outer ring at the front end of the second bidirectional threaded rod is fixedly connected to a driven pulley, and a belt is arranged between the driving pulley and the driven pulley.

[0022] By adopting the above technical solution, the driven pulley is driven to rotate by the driving pulley and the belt.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. The utility model provides an impact-proof swing check valve, which first squeezes the fixed plate through the valve, and then uses the spring for buffering. The extrusion plate squeezes the first damper, and the fixed plate squeezes the second damper on the extrusion plate for buffering. The first connecting block, the second inclined rod, the slider and the extrusion spring are used for buffering to protect the valve and increase its service life.

[0025] 2. The utility model provides an impact-proof swing check valve, which is moved by a first motor, a driving gear, a driven gear, a first bidirectional threaded rod, a nut pair, a movable plate and an arc plate. The driven pulley is driven to rotate by a driving pulley and a belt, so that the arc plate clamps the pipe at the bottom, thereby improving the stability of the check valve installation, and the installation is convenient and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the protection box of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the check valve of the utility model;

[0029] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0030] Figure 5 It is a structural schematic diagram of the arc plate of the utility model.

[0031] In the figure: 1. protection box; 2. protection door; 3. hinge; 4. handle; 5. check valve; 6. connecting plate; 7. valve; 8. fixed plate; 9. spring; 10. first connecting block; 11. first oblique rod; 12. fixed plate; 13. slide groove; 14. extrusion spring; 15. slider; 16. second oblique rod; 17. second connecting block; 18. extrusion plate; 19. first damper; 20. second damper; 21. connecting plate; 22. motor; 23. driving gear; 24. driven gear; 25. first bidirectional threaded rod; 26. nut pair; 27. moving plate; 28. driving pulley; 29. ​​belt; 30. driven pulley; 31. second bidirectional threaded rod; 32. arc plate. DETAILED DESCRIPTION

[0032] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0034] Reference Figure 1 and Figure 2 The utility model is an impact-proof swing check valve, comprising a protection box 1, a protection door 2 is arranged on the top of the protection box 1, a handle 4 is fixedly connected to the top right side of the protection door 2, the protection door 2 and the protection box 1 are rotatably connected through a hinge 3, the protection door 2 protects the internal check valve 5, the protection box 1 is provided with a check valve 5, and the front and rear ends of the protection box 1 are fixedly connected with connection plates 6.

[0035] Reference Figure 3 and Figure 4The check valve 5 is rotatably connected with the valve 7 inside, the inner wall of the check valve 5 is fixedly connected with a fixed plate 8, a spring 9 is fixedly connected between the fixed plate 8 and the valve 7, a second damper 20 is fixedly connected with the bottom of the fixed plate 8, a fixed disk 12 is fixedly connected with the bottom of the second damper 20, a first damper 19 is fixedly connected with the bottom of the fixed disk 12, an extrusion plate 18 is fixedly connected with the bottom of the first damper 19, a slide groove 13 is provided on the left and right sides of the fixed disk 12, a slider 15 is slidably connected with the left and right sides of the inner wall of the slide groove 13, an extrusion spring 14 is provided on the inner wall of the slide groove 13, one end of the extrusion spring 14 is fixedly connected with the slider 15, and the other end of the extrusion spring 14 is fixedly connected with the fixed disk 12, the bottom of the fixed plate 8 is fixedly connected with the first connecting block 10, the bottom of the first connecting block 10 is rotatably connected with the first inclined rod 11, and the first inclined rod 11 and the slider 15 are rotatably connected. The second connecting block 17 is connected to the top of the extrusion plate 18, and the second connecting block 17 is rotatably connected to the top of the second connecting block 17. The second oblique rod 16 is rotatably connected to the slider 15. The valve 7 is buffered and protected by the spring 9. The valve 7 is flushed by water flow, and the valve 7 is squeezed to squeeze the extrusion plate 18, so that the extrusion plate 18 squeezes the first damper 19, and the fixed plate 12 squeezes the fixed plate 8 with the second damper 20 for buffering. The extrusion plate 18 changes, so that the position of the second connecting block 17 changes, so that the second oblique rod 16 rotates, driving the slider 15 to slide on the inner wall of the slide groove 13, and the slider 15 squeezes the extrusion spring 14 for buffering. The slider 15 moves, driving the first oblique rod 11 to rotate, and rotates with the first connecting block 10 for buffering.

[0036] Reference Figure 5A mounting assembly is provided on the inner wall of the bottom right side of the protection box 1, and the mounting assembly includes a connecting plate 21, the connecting plate 21 is fixedly connected to the top right side of the protection box 1, a motor 22 is fixedly connected to the front end of the connecting plate 21, and a driving gear 23 is fixedly connected to the output end of the motor 22, a first bidirectional threaded rod 25 is rotatably connected inside the right connecting disk 6, a driven gear 24 is fixedly connected to the outer ring of the first bidirectional threaded rod 25, and the driven gear 24 is meshed with the driving gear 23, and a nut pair 26 is threadedly connected to the outer rings of the front and rear ends of the first bidirectional threaded rod 25, a moving plate 27 is fixedly connected to the top of the nut pair 26, and an arc plate 32 is fixedly connected to the opposite side of the moving plate 27, a driving pulley 28 is fixedly connected to the outer ring of the front end of the first bidirectional threaded rod 25, and a second bidirectional threaded rod 31 is rotatably connected inside between the left connecting disks 6, and the outer ring of the front end of the second bidirectional threaded rod 31 A driven pulley 30 is fixedly connected, a belt 29 is arranged between the driving pulley 28 and the driven pulley 30, the driving gear 23 is driven to rotate by the motor 22, the driving gear 23 is meshed with the driven gear 24, so that the first bidirectional threaded rod 25 is rotated, the driving pulley 28 is driven to rotate by the rotation of the first bidirectional threaded rod 25, the driven pulley 30 is driven to rotate by the driving pulley 28 and the belt 29, the second bidirectional threaded rod 31 inside is rotated by the rotation of the driven pulley 30, the nut pair 26 is driven to move by the rotation of the first bidirectional threaded rod 25 and the second bidirectional threaded rod 31, the two nut pairs 26 are guided by the limit rod, the movable plate 27 and the arc plate 32 are driven to move by the movement of the nut pair 26, the connecting pipes of different sizes are fixed, and the installation is fast and convenient.

[0037] Working principle: insert the pipe into the protection box 1, drive the driving gear 23 to rotate through the motor 22, the driving gear 23 is meshed with the driven gear 24, so that the first bidirectional threaded rod 25 is rotated, and the driving pulley 28 is driven to rotate through the first bidirectional threaded rod 25, and the driven pulley 30 is driven to rotate through the driving pulley 28 and the belt 29, and the second bidirectional threaded rod 31 is rotated through the driven pulley 30, and the nut pair 26 is moved by the first bidirectional threaded rod 25 and the second bidirectional threaded rod 31, and the two nut pairs 26 are guided by the limit rod, and the moving plate 27 and the arc plate 32 are moved by the movement of the nut pair 26. The pipe and the check valve 5 are installed, and the valve 7 is flushed by water flow, and the valve 7 is squeezed to squeeze the squeezing plate 18, so that the squeezing plate 18 squeezes the first damper 19, and the fixed plate 12 squeezes the second damper 20 to the fixed plate 8 for buffering. The squeezing plate 18 changes, so that the position of the second connecting block 17 changes, so that the second oblique rod 16 rotates, and drives the slider 15 to slide on the inner wall of the slide groove 13, and the slider 15 squeezes the squeezing spring 14 for buffering. The slider 15 moves, drives the first oblique rod 11 to rotate, and rotates with the first connecting block 10 for buffering.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact-proof swing check valve, comprising a protection box (1), characterized in that: The protection box (1) is provided with a protection door (2) at the top, a handle (4) is fixedly connected to the top right side of the protection door (2), the protection door (2) and the protection box (1) are rotatably connected via a hinge (3), a check valve (5) is provided inside the protection box (1), the front and rear ends of the protection box (1) are fixedly connected to connection plates (6), a valve (7) is rotatably connected inside the check valve (5), a fixing plate (8) is fixedly connected to the inner wall of the check valve (5), a spring (9) is fixedly connected between the fixing plate (8) and the valve (7), a second damper (20) is fixedly connected to the bottom of the fixing plate (8), a fixing plate (12) is fixedly connected to the bottom of the second damper (20), a first damper (19) is fixedly connected to the bottom of the fixing plate (12), a first damper (19) is fixedly connected to the bottom of the first damper (19), and a pressing plate (18) is fixedly connected to the bottom of the first damper (19). The fixed plate (12) is provided with a slide groove (13) on both sides, and the inner wall of the slide groove (13) is slidably connected with a slider (15) on both sides, and the inner wall of the slide groove (13) is provided with an extrusion spring (14), one end of the extrusion spring (14) is fixedly connected with the slider (15), and the other end of the extrusion spring (14) is fixedly connected with the fixed plate (12), the bottom of the fixed plate (8) is fixedly connected with a first connecting block (10), the bottom of the first connecting block (10) is rotatably connected with a first inclined rod (11), and the first inclined rod (11) is rotatably connected with the slider (15), the top of the extrusion plate (18) is fixedly connected with a second connecting block (17), the top of the second connecting block (17) is rotatably connected with a second inclined rod (16), and the second inclined rod (16) is rotatably connected with the slider (15), and the right bottom inner wall of the protection box (1) is provided with a mounting assembly.

2. The anti-shock swing check valve according to claim 1, characterized in that: The mounting assembly comprises a connecting plate (21), wherein the connecting plate (21) is fixedly connected to the top of the right side of the protection box (1), and a motor (22) is fixedly connected to the front end of the connecting plate (21).

3. The anti-shock swing check valve according to claim 2, characterized in that: The output end of the motor (22) is fixedly connected to a driving gear (23), and the inside of the right connecting plate (6) is rotatably connected to a first bidirectional threaded rod (25).

4. The anti-shock swing check valve according to claim 3, characterized in that: The outer ring of the first bidirectional threaded rod (25) is fixedly connected to a driven gear (24), and the driven gear (24) is meshingly connected to the driving gear (23).

5. The anti-shock swing check valve according to claim 3, characterized in that: The outer rings of the front and rear ends of the first bidirectional threaded rod (25) are both threadedly connected with nut pairs (26).

6. The anti-shock swing check valve according to claim 5, characterized in that: A moving plate (27) is fixedly connected to the top of the nut pair (26), and an arc-shaped plate (32) is fixedly connected to the opposite side of the moving plate (27).

7. The anti-shock swing check valve according to claim 3, characterized in that: The front end outer ring of the first bidirectional threaded rod (25) is fixedly connected to a driving pulley (28), and the second bidirectional threaded rod (31) is rotatably connected inside the left connecting disk (6).

8. The anti-shock swing check valve according to claim 7, characterized in that: The front end outer ring of the second bidirectional threaded rod (31) is fixedly connected to a driven pulley (30), and a belt (29) is provided between the driving pulley (28) and the driven pulley (30).

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