A plug valve durability testing device

Abstract

The present invention relates to a durability testing device for a plug valve, comprising an equipment box and a plug valve, a motor is arranged on the rear side of the equipment box, an output shaft of the motor passes through the equipment box and is fixedly connected with a rotating circular plate, and the rotating circular plate is arranged in the equipment box, a sliding plate is arranged on the left side of the rotating circular plate, the sliding plate is slidably connected to the equipment box, a first mounting plate is symmetrically arranged on one side of the sliding plate close to the rotating circular plate, a rotating shaft is fixedly connected between the first mounting plates and on the front side of the rotating circular plate, a connecting rod is arranged between the sliding plate and the rotating circular plate, and two ends of the connecting rod are respectively arranged on the outside of the rotating shaft. The present invention has a simple structure and a reasonable design, and can drive the sliding plate to slide back and forth in the equipment box through the rotation of the motor, so that the pushing rod pushes the fixed plate, and drives the handle to rotate back and forth, thereby being able to test the durability of the plug valve.

Description

Technical Field

[0001] The invention relates to a plug valve durability testing device, belonging to the technical field of valves. Background Art

[0002] The plug valve is a rotary valve in the shape of a closing piece or a plunger. It is a valve that can be opened or closed by rotating 90 degrees to make the channel opening on the valve plug the same as or separate from the channel opening on the valve body. In the production of plug valves, the on-off performance or service life of the plug valve must be tested. Generally, the service life of the plug valve that meets the market demand is tens of thousands of times, even hundreds of thousands or even hundreds of thousands of times. It is necessary to be able to more conveniently perform durability testing through the handle on the plug valve. Therefore, further improvement is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a durability testing device for a plug valve, which can drive the sliding plate to slide back and forth in the equipment box through the rotation of the motor, so that the push rod pushes the fixed plate, driving the handle to rotate back and forth, thereby testing the durability of the plug valve to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A plug valve durability test device comprises an equipment box and a plug valve, wherein a motor is arranged at the rear side of the equipment box, an output shaft of the motor penetrates the equipment box and is fixedly connected with a rotating circular plate, and the rotating circular plate is arranged in the equipment box, a sliding plate is arranged on the left side of the rotating circular plate, the sliding plate is slidably connected with the equipment box, a first mounting plate is symmetrically arranged on one side of the sliding plate close to the rotating circular plate, a rotating shaft is fixedly connected between the first mounting plates and on the front side of the rotating circular plate, a connecting rod is arranged between the sliding plate and the rotating circular plate, and both ends of the connecting rod are respectively arranged on the rotating shaft On the outside, the connecting rod is movably connected with the rotating shaft, a pushing rod is arranged on the left side of the sliding plate, a fixing plate is arranged on the side of the pushing rod away from the sliding plate, the fixing plate and the side of the sliding plate close to the pushing rod are fixedly connected with the second mounting plate, movable blocks are symmetrically arranged at both ends of the pushing rod, and the movable blocks are connected to the second mounting plate through a rotating shaft, a first fastening plate and a second fastening plate are arranged on the left side of the fixing plate, and the first fastening plate is fixedly connected to the fixing plate, and a handle is arranged on the stopcock, and the handle is arranged between the first fastening plate and the second fastening plate.

[0006] Furthermore, first limiting blocks are symmetrically arranged on upper and lower sides of the sliding plate, and the first limiting blocks are fixedly connected to the sliding plate.

[0007] Furthermore, a first limiting groove is provided in the equipment box, and the first limiting groove corresponds to the first limiting block.

[0008] Furthermore, a groove is provided in the equipment box, and the groove is symmetrically arranged on both sides of the equipment box.

[0009] Furthermore, a second limiting groove is formed in the fixing plate, and the second limiting groove is symmetrically arranged on both sides of the fixing plate.

[0010] Furthermore, a second limiting block is slidably connected in the second limiting groove, and the second limiting block is fixedly connected to the second fastening plate.

[0011] Furthermore, a bolt is provided on the top of the second fastening plate, and the bolt tail passes through the second fastening plate and is threadedly connected to the first fastening plate.

[0012] The beneficial effects of the present invention are:

[0013] 1. Through the rotation of the motor, the sliding plate can be driven to slide back and forth in the equipment box, so that the push rod pushes the fixed plate, driving the handle to rotate back and forth, so as to test the durability of the plug valve;

[0014] 2. By providing the first limiting block and the first limiting groove, the sliding plate can be limited to make the sliding plate more stable. By providing the second limiting groove and the second limiting block, the second fastening plate can be limited while the second fastening plate can be raised and lowered. Handles of different sizes can be fixed. By providing bolts, the first fastening plate and the second fastening plate can be fixed to fix the handle. By providing grooves, the two sides of the equipment box can be prevented from affecting the rotation of the push rod during detection. The device is highly practical and suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification for explaining the present invention, but do not constitute a limitation of the present invention.

[0016] Figure 1 It is a front view of a plug valve durability testing device of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of a plug valve durability testing device of the present invention;

[0018] Figure 3 It is a side view of a plug valve durability testing device of the present invention;

[0019] Figure 4 It is a schematic structural diagram of a second fastening plate of a plug valve durability testing device of the present invention;

[0020] Figure 5It is an enlarged schematic diagram of part A of a plug valve durability testing device of the present invention;

[0021] Numbers in the figure: 1. Equipment box; 2. Plug valve; 3. Motor; 4. Rotating circular plate; 5. Sliding plate; 6. First mounting plate; 7. Rotating shaft; 8. Connecting rod; 9. Push rod; 10. Fixed plate; 11. Second mounting plate; 12. Movable block; 13. First fastening plate; 14. Second fastening plate; 15. Handle; 16. First limiting block; 17. First limiting groove; 18. Groove; 19. Second limiting groove; 20. Second limiting block; 21. Bolt. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-5 As shown, a plug valve durability testing device comprises an equipment box 1 and a plug valve 2, a motor 3 is arranged at the rear side of the equipment box 1, the output shaft of the motor 3 passes through the equipment box 1 and is fixedly connected with a rotating circular plate 4, and the rotating circular plate 4 is arranged in the equipment box 1, a sliding plate 5 is arranged on the left side of the rotating circular plate 4, the sliding plate 5 is slidably connected with the equipment box 1, a first mounting plate 6 is symmetrically arranged on one side of the sliding plate 5 close to the rotating circular plate 4, a rotating shaft 7 is fixedly connected between the first mounting plates 6 and on the front side of the rotating circular plate 4, a connecting rod 8 is arranged between the sliding plate 5 and the rotating circular plate 4, and both ends of the connecting rod 8 are respectively arranged on the outside of the rotating shaft 7, and the connecting rod 8 is movably connected with the rotating shaft 7, through the rotation of the output shaft of the motor 3, the rotating circular plate 4 plays the effect of an eccentric wheel, a pushing rod 9 is arranged on the left side of the sliding plate 5, To push, a fixed plate 10 is provided on the side of the push rod 9 away from the sliding plate 5, and a second mounting plate 11 is fixedly connected to the fixed plate 10 and the side of the sliding plate 5 close to the push rod 9. Movable blocks 12 are symmetrically provided at both ends of the push rod 9, and the movable blocks 12 are connected to the second mounting plate 11 through a rotating shaft, so that the two ends of the push rod 9 can be rotatably connected to the fixed plate 10 and the sliding plate 5 respectively, so that the push rod 9 will not affect the rotation of the fixed plate 10 and the handle 15, thereby enabling the handle 15 to achieve a reciprocating rotation effect. A first fastening plate 13 and a second fastening plate 14 are provided on the left side of the fixed plate 10, and the first fastening plate 13 is fixedly connected to the fixed plate 10, and a handle 15 is provided on the stopcock 2, and the handle 15 is provided between the first fastening plate 13 and the second fastening plate 14, and the handle 15 is fixed.

[0025] In this embodiment, the first limiting blocks 16 are symmetrically arranged on the upper and lower sides of the sliding plate 5, and the first limiting blocks 16 are fixedly connected to the sliding plate 5. A first limiting groove 17 is opened in the equipment box 1, and the first limiting groove 17 corresponds to the first limiting block 16, which limits the sliding plate 5 and makes the sliding plate 5 more stable.

[0026] In this embodiment, a second limiting groove 19 is opened in the fixing plate 10, and the second limiting groove 19 is symmetrically arranged on both sides of the fixing plate 10. A second limiting block 20 is slidably connected in the second limiting groove 19, and the second limiting block 20 is fixedly connected to the second fastening plate 14. While restricting the second fastening plate 14, the second fastening plate 14 can be raised and lowered, and handles 15 of different sizes can be fixed.

[0027] Embodiment 2:

[0028] like Figure 1-3 As shown, a groove 18 is opened in the equipment box 1, and the groove 18 is symmetrically arranged on both sides of the equipment box 1. During inspection, the two sides of the equipment box 1 are prevented from affecting the rotation of the push rod 9. A bolt 21 is arranged on the top of the second fastening plate 14, and the tail of the bolt 21 passes through the second fastening plate 14 and is threadedly connected with the first fastening plate 13, so as to fix the first fastening plate 13 and the second fastening plate 14, thereby fixing the handle 15.

[0029] Working principle of the present invention: the handle 15 on the plug valve 2 is placed between the first fastening plate 13 and the second fastening plate 14, and the second fastening plate 14 is fixed to the first fastening plate 13 by bolts 21, so as to achieve the effect of fixing the handle 15, and the motor 3 is turned on, and the rotating circular plate 4 is driven to rotate by the rotation of the output shaft of the motor 3, and the sliding plate 5 is made to slide linearly in the equipment box 1 through the effect of the connecting rod 8 and the rotating shaft 7, and when the sliding plate 5 slides, the push rod 9 pushes the fixed plate 10, and through the second mounting plate 11, the push rod 9 does not affect The fixed plate 10 and the handle 15 rotate, so that the handle 15 can achieve the effect of reciprocating rotation. The setting of the first limiting block 16 and the first limiting groove 17 can limit the sliding plate 5, so that the sliding plate 5 can be more stable. The second limiting groove 19 and the second limiting block 20 are provided, which can limit the second fastening plate 14 while allowing the second fastening plate 14 to be raised and lowered, and can fix handles 15 of different sizes. The groove 18 is provided, which can prevent the two sides of the equipment box 1 from affecting the rotation of the push rod 9 during detection. The structure is simple, the operation is convenient, and the practicability is strong.

[0030] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A plug valve durability testing device, comprising an equipment box (1) and a plug valve (2), characterized in that: A motor (3) is arranged at the rear side of the equipment box (1); an output shaft of the motor (3) passes through the equipment box (1) and is fixedly connected to a rotating circular plate (4); the rotating circular plate (4) is arranged in the equipment box (1); a sliding plate (5) is arranged on the left side of the rotating circular plate (4); the sliding plate (5) is slidably connected to the equipment box (1); A first mounting plate (6) is symmetrically arranged on one side of the sliding plate (5) close to the rotating circular plate (4); a rotating shaft (7) is fixedly connected between the first mounting plates (6) and the front side of the rotating circular plate (4); a connecting rod (8) is arranged between the sliding plate (5) and the rotating circular plate (4), and both ends of the connecting rod (8) are respectively arranged on the outside of the rotating shaft (7), and the connecting rod (8) is movably connected to the rotating shaft (7); A push rod (9) is arranged on the left side of the sliding plate (5), a fixed plate (10) is arranged on the side of the pushing rod (9) away from the sliding plate (5), the fixed plate (10) and the side of the sliding plate (5) close to the pushing rod (9) are both fixedly connected with a second mounting plate (11), movable blocks (12) are symmetrically arranged at both ends of the pushing rod (9), and the movable blocks (12) are connected to the second mounting plate (11) through a rotating shaft, a first fastening plate (13) and a second fastening plate (14) are arranged on the left side of the fixed plate (10), and the first fastening plate (13) is fixedly connected to the fixed plate (10), and a handle (15) is arranged on the plug valve (2), and the handle (15) is arranged between the first fastening plate (13) and the second fastening plate (14); The sliding plate (5) is symmetrically provided with first limiting blocks (16) on both upper and lower sides, and the first limiting blocks (16) are fixedly connected to the sliding plate (5); A groove (18) is provided in the equipment box (1), and the groove (18) is symmetrically arranged on both sides of the equipment box (1).

2. A plug valve durability testing device according to claim 1, characterized in that: A first limiting groove (17) is provided in the equipment box (1), and the first limiting groove (17) corresponds to the first limiting block (16).

3. A plug valve durability testing device according to claim 1, characterized in that: A second limiting groove (19) is provided in the fixing plate (10), and the second limiting groove (19) is symmetrically arranged on both sides of the fixing plate (10).

4. A plug valve durability testing device according to claim 3, characterized in that: A second limiting block (20) is slidably connected in the second limiting groove (19), and the second limiting block (20) is fixedly connected to the second fastening plate (14).

5. The plug valve durability testing device according to claim 1, characterized in that: A bolt (21) is provided on the top of the second fastening plate (14), and the tail of the bolt (21) passes through the second fastening plate (14) and is threadedly connected to the first fastening plate (13).

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