Valve test bed

Abstract

The utility model discloses a valve test bench, which comprises a base, the upper end of the base is provided with a control box, the upper end of the base is detachably connected with a lower blind plate and a support frame, the upper end of the support frame is provided with an air cylinder, the output end of the air cylinder is fixedly connected with an upper blind plate, the lower end of the upper blind plate is provided with a limiting assembly, and the limiting assembly is fixedly connected with the upper blind plate. A fixing assembly is arranged on one side of the lower blind plate and one side of the upper blind plate and comprises four identical sliding grooves formed in the upper end of the lower blind plate, screw rods are arranged on the inner walls of the sliding grooves, moving blocks are slidably connected to the inner walls of the sliding grooves, and the moving blocks are in threaded connection with the screw rods. A fixing rod is fixedly connected to the upper end of the moving block, a square hole is formed in the arc face of the fixing rod, and square blocks are slidably connected to the two sides of the inner wall of the square hole. The utility model has the following advantage and effect: the blind plate is prevented from being extruded by the cylinder to deform.

Description

Technical Field

[0001] The utility model relates to the field of test benches, and more specifically, to a valve test bench. Background Art

[0002] The valve test bench is used to test the air tightness of the valve. The valve test bench consists of a base, a control box, a support frame, a cylinder, and a pair of blind plates. When using the valve test bench to test the air tightness of the valve, place the valve on the blind plate on the base, start the cylinder on the support frame, so that the blind plate is close to the upper end of the valve, thereby closing both ends of the valve, and starting the control box so that the water in the control box enters the valve through the pipeline from the low-pressure pump, and at the same time uses the high-pressure pump to increase the pressure. When the pressure reaches the set value, stop the pressure increase and start the pressure holding time. When the pressure holding time is up, the test is completed. During use, the cylinder is used to drive the upper blind plate to move downward, so that the upper blind plate is squeezed to the valve, and then the valve squeezes the lower blind plate, thereby closing the valve. During the closing process, the blind plate will always be subjected to the force transmitted by the cylinder, and the force-bearing part where the blind plate contacts the valve is subjected to greater force, which causes the blind plate to deform, affecting the blind plate to close the valve, which may cause errors in valve detection. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a valve test bench which can prevent the blind plate from being deformed by being squeezed by the cylinder.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve test bench, comprising a base, a control box is provided at the upper end of the base, a lower blind plate and a support frame are detachably connected to the upper end of the base, a cylinder is installed at the upper end of the support frame, an upper blind plate is fixedly connected to the output end of the cylinder, a limiting assembly is provided at the lower end of the upper blind plate, a fixing assembly is provided on one side of the lower blind plate and the upper blind plate, the fixing assembly comprises four identical slide grooves opened at the upper end of the lower blind plate, a screw is provided on the inner wall of the slide groove, a moving block is slidably connected to the inner wall of the slide groove, the moving block is threadedly connected to the screw, a fixing rod is fixedly connected to the upper end of the moving block, a square hole is provided on the arc surface of the fixing rod, and square blocks are slidably connected to the inner walls of the square hole.

[0005] By adopting the above technical solution and setting a fixing component, when fixing the valve, the screw is rotated by the driving mechanism, so that the moving block is rotated in the slide groove, so that the moving block moves. After moving to a suitable position, the valve is lowered, so that the fixing rod passes through the mounting hole on the valve, and the square blocks on both sides of the square hole are squeezed onto the valve surface, so that the lower end of the valve and the lower blind plate are fixed, and then the upper blind plate and the upper end of the valve are fixed in the same way, so as to avoid using the cylinder to squeeze the blind plate and cause the blind plate to deform.

[0006] The utility model is further configured as follows: one side of the square block is fixedly connected with a spring, and the other end of the spring is fixed to the square block on the other side.

[0007] By adopting the above technical solution and arranging springs, the square blocks on both sides are reset.

[0008] The utility model is further configured as follows: a motor is installed on the arc surface of the lower blind plate, and the output end of the motor is fixed to the screw rod.

[0009] By adopting the above technical solution, the motor is started to drive the screw to rotate.

[0010] The utility model is further configured as follows: limiting grooves are provided on both sides of the inner wall of the slide groove, and the two ends of the moving block are fixedly connected to the limiting blocks, and the limiting blocks slide in the limiting grooves.

[0011] By adopting the above technical solution and providing the limiting block and the limiting groove, the auxiliary screw rod limits the moving block.

[0012] The utility model is further configured as follows: the position limiting assembly comprises a mounting groove arranged on the arc surface of the fixing rod, and a gasket is arranged on the inner wall of the mounting groove.

[0013] The utility model is further configured as follows: a limiting rope is fixedly connected between the two fixing rods, and the limiting rope is an elastic rope.

[0014] The utility model is further configured as follows: the two limit ropes are fixed to the fixing rod in a cross shape.

[0015] By adopting the above technical solution, the gasket is clamped into the installation groove, and the gasket is limited by the action of two cross-shaped limiting ropes.

[0016] By adopting the above technical solution and setting a fixing component, when fixing the valve, the screw is rotated by the driving mechanism, so that the moving block is rotated in the slide groove, so that the moving block moves. After moving to a suitable position, the valve is lowered, so that the fixing rod passes through the mounting hole on the valve, and the square blocks on both sides of the square hole are squeezed onto the valve surface, so that the lower end of the valve and the lower blind plate are fixed, and then the upper blind plate and the upper end of the valve are fixed in the same way, so as to avoid using the cylinder to squeeze the blind plate and cause the blind plate to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the utility model;

[0018] FIG2 is a schematic diagram of the structure of the utility model from another angle;

[0019] FIG3 is a partial schematic diagram of a fixing assembly of the present invention;

[0020] Figure 4 is a schematic diagram of the present utility model Figure 2 A magnified view of center.

[0021] In the figure: 1. base; 2. fixing assembly; 3. limiting assembly; 4. control box; 5. support frame; 6. cylinder; 7. upper blind plate; 8. lower blind plate; 21. slide groove; 22. moving block; 23. fixing rod; 24. square hole; 25. square block; 26. spring; 27. limiting groove; 28. limiting block; 29. ​​screw; 210. motor; 31. mounting groove; 32. gasket; 33. limiting rope. DETAILED DESCRIPTION

[0022] Refer to Figures 1 to Figure 4 The utility model is further described in detail.

[0023] Referring to Figures 1 to 3, a first embodiment is shown: a valve test bench, comprising a base 1, a control box 4 is provided at the upper end of the base 1, a lower blind plate 8 and a support frame 5 are detachably connected to the upper end of the base 1, a cylinder 6 is installed at the upper end of the support frame 5, an output end of the cylinder 6 is fixedly connected to an upper blind plate 7, a limiting assembly 3 is provided at the lower end of the upper blind plate 7, a fixing assembly 2 is provided on one side of the lower blind plate 8 and the upper blind plate 7, the fixing assembly 2 comprises four identical slide grooves 21 opened at the upper end of the lower blind plate 8, a screw 29 is provided on the inner wall of the slide groove 21, a moving block 22 is slidably connected to the inner wall of the slide groove 21, the moving block 22 and the screw 29 are threadedly connected, a fixing rod 23 is fixedly connected to the upper end of the moving block 22, a square hole 24 is provided on the arc surface of the fixing rod 23, and square blocks 25 are slidably connected on both sides of the inner wall of the square hole 24. A spring 26 is fixedly connected to one side of the square block 25, and the other end of the spring 26 is fixed to the square block 25 on the other side. A motor 210 is installed on the arc surface of the lower blind plate 8, and the output end of the motor 210 is fixed to the screw 29. Limiting grooves 27 are provided on both sides of the inner wall of the slide 21, and the two ends of the moving block 22 are fixedly connected to the limiting blocks 28, and the limiting blocks 28 slide in the limiting grooves 27.

[0024] Reference Figure 2 And Figure 4 is a second embodiment:

[0025] The limiting assembly 3 includes a mounting groove 31 formed on the arc surface of the fixing rod 23 , and a gasket 32 ​​is disposed on the inner wall of the mounting groove 31 .

[0026] A limit rope 33 is fixedly connected between the two fixing rods 23, and the limit rope 33 is an elastic rope. The two limit ropes 33 are fixed to the fixing rods 23 in a cross shape.

[0027] Here’s how to do it

[0028] Step 1: Start the motor 210 to drive the screw rod 29 to rotate, so that the moving block 22 rotates in the slide groove 21. After moving to a suitable position, the mounting hole on the valve and the fixing rod 23 are horizontally and vertically aligned, and the motor 210 is turned off;

[0029] Step 2: Drag the valve and pass the fixing rod 23 through the mounting hole on the valve so that the square blocks 25 on both sides of the square hole 24 are squeezed onto the valve surface;

[0030] Step 3: Move the upper blind plate 7 and start the motor 210 on its surface to rotate the screw rod 29. After the screw rod 29 is moved to a suitable position, the mounting hole on the valve and the fixing rod 23 are aligned horizontally and vertically, and the motor 210 is turned off.

[0031] Step 4: Start the blind plate 7 on the cylinder 6, so that the fixing rod 23 is inserted into the mounting hole on the valve, so that the square blocks 25 on both sides of the square hole 24 are pressed onto the valve surface, thereby fixing the valve.

[0032] 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 valve test bench, comprising a base (1), a control box (4) is arranged at the upper end of the base (1), a lower blind plate (8) and a support frame (5) are detachably connected to the upper end of the base (1), a cylinder (6) is installed at the upper end of the support frame (5), an upper blind plate (7) is fixedly connected to the output end of the cylinder (6), a limit assembly (3) is arranged at the lower end of the upper blind plate (7), and a fixing assembly (2) is arranged on one side of the lower blind plate (8) and the upper blind plate (7), wherein: The fixing assembly (2) comprises four identical slide grooves (21) provided at the upper end of the lower blind plate (8), the inner wall of the slide groove (21) is provided with a screw rod (29), the inner wall of the slide groove (21) is slidably connected with a moving block (22), the moving block (22) and the screw rod (29) are threadedly connected, the upper end of the moving block (22) is fixedly connected with a fixing rod (23), the circular arc surface of the fixing rod (23) is provided with a square hole (24), and the inner walls of the square hole (24) are slidably connected with square blocks (25) on both sides.

2. The valve test bench according to claim 1 is characterized in that: A spring (26) is fixedly connected to one side of the square block (25), and the other end of the spring (26) is fixed to the square block (25) on the other side.

3. The valve test bench according to claim 1 is characterized in that: A motor (210) is mounted on the arc surface of the lower blind plate (8), and an output end of the motor (210) is fixed to a screw rod (29).

4. The valve test bench according to claim 1 is characterized in that: Limiting grooves (27) are provided on both sides of the inner wall of the sliding groove (21), and the two ends of the moving block (22) are fixedly connected to limiting blocks (28), and the limiting blocks (28) slide in the limiting grooves (27).

5. The valve test bench according to claim 1 is characterized in that: The limiting assembly (3) comprises a mounting groove (31) formed on the arc surface of the fixing rod (23), and a gasket (32) is provided on the inner wall of the mounting groove (31).

6. The valve test bench according to claim 1 is characterized in that: A limiting rope (33) is fixedly connected between the two fixing rods (23), and the limiting rope (33) is an elastic rope.

7. The valve test bench according to claim 6 is characterized in that: The two limiting ropes (33) are fixed to the fixing rod (23) in a cross shape.

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