Check valve convenient to maintain

Abstract

The utility model discloses a check valve convenient to maintain, which belongs to the technical field of check valves and comprises a valve body, a valve hole is arranged in the valve body, and the top of the valve body is in threaded connection with a threaded seat. The device has the beneficial effects that by arranging a rotating plate, a threaded column, a pulling plate and a trapezoidal clamping block, the rotating plate drives the threaded column to rotate in a threaded hole by rotating the rotating plate, one end of the threaded column pushes a second movable plate to descend, the second movable plate compresses a first telescopic assembly, and it is conveniently guaranteed that the first telescopic assembly is maintained under normal elastic force; by pulling a pulling plate, under the action of a second telescopic assembly, the pulling plate drives a third movable plate to move through a connecting block, the third movable plate drives a trapezoidal clamping block to be separated from a clamping groove, meanwhile, the pulling plate is lifted upwards, and the pulling plate drives a mounting base to be separated from a containing groove; and the first telescopic assembly can be replaced and maintained conveniently, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and more specifically, to a check valve which is convenient to maintain. Background Art

[0002] A check valve is a valve whose opening and closing part is a circular disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement modes are divided into lifting type and swing type. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the disc weight and its flow resistance, the valve is opened. Conversely, the valve is closed when the medium flows back. However, most of the existing check valves are one-piece structures and cannot be quickly disassembled. It is inconvenient when the internal equipment of the check valve needs to be replaced or maintained. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a check valve that is easy to maintain, which has the feature of facilitating replacement and maintenance of the internal equipment of the check valve.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides a check valve which is easy to maintain, including a valve body, a valve hole is opened inside the valve body, the top of the valve body is threadedly connected to a threaded seat, the top of the threaded seat is opened with a movable groove, the bottom of the movable groove is fixedly connected to a cartridge, the inside of the cartridge is movably connected to a first movable plate, the bottom of the first movable plate is fixedly connected to a movable rod, the bottom end of the movable rod is fixedly connected to a valve core, the top of the first movable plate is overlapped with a first telescopic component, the top of the first telescopic component is fixedly connected to a second movable plate, the top of the second movable plate is fixedly connected to a bearing, and the inside of the bearing is movably connected to a threaded column, the movable The interior of the groove is movably connected with a mounting seat, a threaded hole is provided on the top of the mounting seat, the threaded column is threadedly connected to the inside of the threaded hole, a rotating plate is fixedly connected to the top of the threaded column, a groove is provided inside the mounting seat, a second telescopic component is fixedly connected to the inner wall of the groove, one end of the second telescopic component is fixedly connected to the third movable plate, a trapezoidal clamping block is fixedly connected to the surface of the third movable plate, a clamping groove is provided on the inner wall of the threaded seat, one end of the trapezoidal clamping block is clamped in the inside of the clamping groove, a connecting plate is fixedly connected to the top of the third movable plate, a rectangular through hole is provided on the top of the mounting seat, and a pull plate is fixedly connected to the connecting plate through the rectangular through hole.

[0007] When using the easy-to-maintain check valve of the present technical solution, the rotating plate is driven by the rotating plate to rotate the threaded column inside the threaded hole, so that one end of the threaded column pushes the second movable plate down, and the second movable plate compresses the first telescopic component, so as to ensure that the first telescopic component is maintained under normal elastic force, thereby reducing the replacement frequency of the telescopic component, and by pulling the pull plate, under the action of the second telescopic component, the pull plate drives the third movable plate to move through the connecting block, so that the third movable plate drives the trapezoidal clamping block to disengage from the clamping slot, and at the same time, the pull plate is lifted upward, so that the pull plate drives the mounting seat to disengage from the placement slot, so as to facilitate the replacement and maintenance of the first telescopic component, and the operation is simple and convenient, and by rotating the threaded seat, the threaded seat is separated from the valve body, and the threaded seat drives the valve core to separate from the valve body through the clamping cylinder, so as to facilitate the disassembly and maintenance of the valve core.

[0008] Furthermore, the first telescopic assembly includes a first telescopic rod, a spring is movably sleeved on the surface of the first telescopic rod, and the other ends of the telescopic rod and the spring are fixedly connected to the second movable plate.

[0009] Furthermore, the second telescopic assembly has the same structure as the first telescopic assembly.

[0010] Furthermore, a buckle plate is fixedly connected to the surface of the threaded seat.

[0011] Furthermore, a first sealing gasket is arranged between the mounting seat and the threaded seat, and a second sealing gasket is arranged between the valve body and the threaded seat.

[0012] Furthermore, the surface of the rotating plate is provided with anti-slip grooves.

[0013] (3) Beneficial effects

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. The check valve convenient for maintenance is provided with a rotating plate, a threaded column, a pulling plate and a trapezoidal block. By rotating the rotating plate, the rotating plate drives the threaded column to rotate inside the threaded hole, so that one end of the threaded column pushes the second movable plate down, so that the second movable plate compresses the first telescopic component, which is convenient for ensuring that the first telescopic component is maintained under normal elastic force, and reducing the replacement frequency of the telescopic component. By pulling the pulling plate, under the action of the second telescopic component, the pulling plate drives the third movable plate to move through the connecting block, so that the third movable plate drives the trapezoidal block to disengage from the slot, and at the same time, the pulling plate is lifted upward, so that the pulling plate drives the mounting seat to disengage from the placement slot, which is convenient for replacing and maintaining the first telescopic component, and the operation is simple and convenient.

[0016] 2. The check valve which is easy to maintain is provided with a threaded seat, and the threaded seat is rotated to separate the threaded seat from the valve body, so that the threaded seat drives the valve core to separate from the valve body through the cartridge, so that the valve core can be easily disassembled and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of a three-dimensional cross section of the utility model;

[0019] Figure 2 For this utility model Figure 1 The enlarged structural diagram of the middle A part;

[0020] Figure 3 It is a schematic diagram of the structure of the first telescopic component in the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.

[0022] The symbols in the accompanying drawings are:

[0023] 1. Valve body; 2. Threaded seat; 3. Movable groove; 4. Card cylinder; 5. First movable plate; 6. Movable rod; 7. Valve core; 8. Valve hole; 9. First telescopic assembly; 901. Telescopic rod; 902. Spring; 10. Second movable plate; 11. Mounting seat; 12. Threaded hole; 13. Threaded column; 14. Turn plate; 15. Groove; 16. Second telescopic assembly; 17. Third movable plate; 18. Rectangular through hole; 19. Connecting plate; 20. Pull plate; 21. Trapezoidal block; 22. Card groove; 23. First sealing gasket; 24. Discharge pipe; 25. Input pipe. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, not all styles.

[0025] Example:

[0026] The following is combined with Figure 1-4 The utility model is described in further detail.

[0027] See also Figure 1-4The utility model provides a technical solution: a check valve that is easy to maintain, comprising a valve body 1, a valve hole 8 is opened inside the valve body 1, a threaded seat 2 is threadedly connected to the top of the valve body 1, a movable groove 3 is opened on the top of the threaded seat 2, a cartridge 4 is fixedly connected to the bottom of the movable groove 3, a first movable plate 5 is movably connected to the inside of the cartridge 4, a movable rod 6 is fixedly connected to the bottom of the first movable plate 5, a valve core 7 is fixedly connected to the bottom end of the movable rod 6, the threaded seat 2 is set, the threaded seat 2 is rotated to separate the threaded seat 2 from the valve body 1, and the threaded seat 2 drives the valve core 7 to separate from the valve body 1 through the cartridge 4, so that the valve is easy to maintain. The core 7 is disassembled and maintained, the top of the first movable plate 5 is overlapped with the first telescopic component 9, the top of the first telescopic component 9 is fixedly connected to the second movable plate 10, the top of the second movable plate 10 is fixedly connected to the bearing, and the inner movably connected with the threaded column 13, the inner movably connected with the mounting seat 11, the top of the mounting seat 11 is provided with a threaded hole 12, the threaded column 13 is threadedly connected to the inside of the threaded hole 12, the top of the threaded column 13 is fixedly connected with a rotating plate 14, the inside of the mounting seat 11 is provided with a groove 15, the inner wall of the groove 15 is fixedly connected with the second telescopic component 16, the second One end of the telescopic assembly 16 is fixedly connected to the third movable plate 17, and the surface of the third movable plate 17 is fixedly connected to a trapezoidal block 21. A slot 22 is provided on the inner wall of the threaded seat 2, and one end of the trapezoidal block 21 is clamped in the inside of the slot 22. The top of the third movable plate 17 is fixedly connected to a connecting plate 19, and a rectangular through hole 18 is provided on the top of the mounting seat 11. The connecting plate 19 passes through the rectangular through hole 18 and is fixedly connected to a pull plate 20. By setting the rotating plate 14, the threaded column 13, the pull plate 20 and the trapezoidal block 21, the rotating plate 14 is rotated to drive the threaded column 13 to rotate inside the threaded hole 12. The second movable plate 10 is moved so that one end of the threaded column 13 pushes the second movable plate 10 to descend, so that the second movable plate 10 compresses the first telescopic component 9, so as to ensure that the first telescopic component 9 is maintained under normal elastic force, and reduce the replacement frequency of the telescopic component. By pulling the pull plate 20, under the action of the second telescopic component 16, the pull plate 20 drives the third movable plate 17 to move through the connecting block, so that the third movable plate 17 drives the trapezoidal block 21 to disengage from the slot 22, and at the same time, the pull plate 20 is lifted upward, so that the pull plate 20 drives the mounting seat 11 to disengage from the placement slot, so as to facilitate the replacement and maintenance of the first telescopic component 9, and the operation is simple and convenient.

[0028] Specifically, the first telescopic assembly 9 includes a first telescopic rod 901 , a spring 902 is movably sleeved on the surface of the first telescopic rod 901 , and the other ends of the telescopic rod 901 and the spring 902 are fixedly connected to the second movable plate 10 .

[0029] By adopting the above technical solution, the first telescopic component 9 plays a role of telescopic elastic force.

[0030] Specifically, the second telescopic assembly 16 has the same structure as the first telescopic assembly 9 .

[0031] Specifically, a buckle plate is fixedly connected to the surface of the threaded seat 2 .

[0032] By adopting the above technical solution, the threaded seat 2 can be easily rotated through the buckle plate.

[0033] Specifically, a first sealing gasket 23 is provided between the mounting seat 11 and the threaded seat 2 , and a second sealing gasket is provided between the valve body 1 and the threaded seat 2 .

[0034] By adopting the above technical solution, the sealing performance between the mounting seat 11 and the threaded seat 2 is improved by the first sealing gasket 23, and the sealing performance between the valve body 1 and the threaded seat 2 is increased by the second sealing gasket.

[0035] Specifically, the surface of the rotating plate 14 is provided with anti-slip grooves.

[0036] By adopting the above technical solution, the rotation adjustment of the rotating plate 14 is facilitated by the anti-slip grooves.

[0037] The working principle of the utility model is:

[0038] In use, when the elastic force of the first telescopic assembly 9 is weakened, the rotating plate 14 is rotated to drive the threaded column 13 to rotate inside the threaded hole 12, so that one end of the threaded column 13 pushes the second movable plate 10 down, so that the second movable plate 10 compresses the first telescopic assembly 9, so that the first telescopic assembly 9 is maintained under normal elastic force to ensure the normal operation of the check valve. When the first telescopic assembly 9 needs to be replaced, the pull plate 20 is pulled, and under the action of the second telescopic assembly 16, the pull plate 20 drives the third movable plate 10 to rotate through the connecting block. The movable plate 17 moves, so that the third movable plate 17 drives the trapezoidal block 21 to disengage from the slot 22, and at the same time, the pull plate 20 is lifted upward, so that the pull plate 20 drives the mounting seat 11 to disengage from the placement slot, and the first telescopic component 9 can be disassembled, and the first telescopic component 9 can be replaced or maintained. When the valve core 7 needs to be replaced or maintained, the buckle plate is rotated to drive the threaded seat 2 to rotate, so that the threaded seat 2 is separated from the valve body 1, and the threaded seat 2 drives the valve core 7 to disengage from the valve body 1 through the cartridge 4, so that the valve core 7 can be disassembled, and the valve core 7 can be replaced or maintained.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A check valve that is easy to maintain, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve hole (8) inside, the top of the valve body (1) is threadedly connected to a threaded seat (2), the top of the threaded seat (2) is provided with a movable groove (3), the bottom of the movable groove (3) is fixedly connected to a cartridge (4), the inside of the cartridge (4) is movably connected to a first movable plate (5), the bottom of the first movable plate (5) is fixedly connected to a movable rod (6), the bottom end of the movable rod (6) is fixedly connected to a valve core (7), the top of the first movable plate (5) is overlapped with a first telescopic component (9), the top of the first telescopic component (9) is fixedly connected to a second movable plate (10), the top of the second movable plate (10) is fixedly connected to a bearing, and the inside of the bearing is movably connected to a threaded column (13), the inside of the movable groove (3) is movably connected to a mounting seat (11), the top of the mounting seat (11) is provided with a threaded A hole (12) is formed in the threaded seat (2), the threaded column (13) is threadedly connected inside the threaded hole (12), the top of the threaded column (13) is fixedly connected to a rotating plate (14), a groove (15) is provided inside the mounting seat (11), a second telescopic component (16) is fixedly connected to the inner wall of the groove (15), one end of the second telescopic component (16) is fixedly connected to a third movable plate (17), a trapezoidal clamping block (21) is fixedly connected to the surface of the third movable plate (17), a clamping groove (22) is provided on the inner wall of the threaded seat (2), one end of the trapezoidal clamping block (21) is clamped inside the clamping groove (22), a connecting plate (19) is fixedly connected to the top of the third movable plate (17), a rectangular through hole (18) is provided on the top of the mounting seat (11), and the connecting plate (19) passes through the rectangular through hole (18) and is fixedly connected to a pull plate (20).

2. A check valve that is easy to maintain according to claim 1, characterized in that: The first telescopic assembly (9) comprises a first telescopic rod (901), a spring (902) being movably sleeved on the surface of the first telescopic rod (901), and the other ends of the telescopic rod (901) and the spring (902) are fixedly connected to the second movable plate (10).

3. The maintenance-friendly check valve according to claim 1, characterized in that: The second telescopic assembly (16) has the same structure as the first telescopic assembly (9).

4. The maintenance-friendly check valve according to claim 1, characterized in that: A buckle plate is fixedly connected to the surface of the threaded seat (2).

5. The maintenance-friendly check valve according to claim 1, characterized in that: A first sealing gasket (23) is provided between the mounting seat (11) and the threaded seat (2), and a second sealing gasket is provided between the valve body (1) and the threaded seat (2).

6. The maintenance-friendly check valve according to claim 1, characterized in that: The surface of the rotating plate (14) is provided with anti-slip grooves.

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