Valve fatigue test device

Abstract

The invention discloses a valve fatigue test device, which comprises a test bench, and the test bench comprises a mounting assembly, a fixing assembly, a cleaning assembly and a test assembly. A valve is clamped and fixed through mutual approaching of clamping rods, and when the clamping rods approach, a cleaning brush is driven to brush the valve through rotation of a conveying belt, so that dust and impurities attached to the valve are cleaned; when a moving block moves, a gear rotates through a gear strip, an inclined block repeatedly abuts against an abutting rod, a folding corrugated barrel is driven to move back and forth, air stored in the folding corrugated barrel is repeatedly blown out, dust on a valve is blown to remove dust, and cleaning is further enhanced in cooperation with brushing of a cleaning brush. Through driving of the driving motor, transmission of the two-way lead screw, the conveying belt and the one-way lead screw is driven, energy is saved, the cleaning brushes are driven to move and brush synchronously when the clamping rods conduct clamping, and time is saved.

Description

Technical Field

[0001] The invention relates to a valve fatigue testing device, in particular to a valve fatigue testing device, belonging to the technical field of valve performance testing equipment. Background Art

[0002] Valves are widely used in industrial production. Their reliability and durability directly affect the safe and stable operation of the entire system. Valve fatigue detection is a device for detecting valve quality. After the valve is produced, the high-frequency rotation of the valve handle is used to make the valve quickly reach a certain number of opening and closing times, and then the valve is subjected to a leak-proof test to achieve valve fatigue detection.

[0003] After searching, Chinese patent number CN118190393A discloses a multifunctional valve fatigue testing device. When multiple sliding columns move downward, some of the sliding columns will be stuck in the gap of the handwheel. The sliding columns blocked by the handwheel will shrink into the interior of the sliding cavity. In this case, starting the motor will cause the rotating disk to drive the sliding columns to rotate, and then drive the handwheel to rotate. This can be applied to the rotation operation of handwheels of different sizes, greatly improving practicality and convenience. However, the above-mentioned patented product can only clamp and fix the valve. However, in actual use, before performing fatigue testing on the valve, in order to better perform fatigue testing on the valve, the valve needs to be cleaned to prevent impurities from interfering with the final test results. This step is often manually cleaned, which is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of the present invention is to provide a valve fatigue testing device in order to solve the above problems.

[0005] The present invention achieves the above-mentioned object through the following technical solutions: a valve fatigue test device, comprising a test bench, wherein the test bench comprises an installation component, a fixing component, a cleaning component and a test component;

[0006] The installation assembly includes a simulated pipeline and a valve body, and the installation assembly is used to install the valve body that needs to be tested;

[0007] The fixing assembly clamps and fixes both sides of the valve body through the clamping rod to prevent the valve body from shaking during the test;

[0008] The cleaning assembly includes a folding bellows and a cleaning brush, and is used to clean impurities attached to the valve body before and after the test to improve the stability of the test;

[0009] The test assembly performs fatigue test operation on the valve body through the execution motor and the clamping block.

[0010] Preferably, a base is provided at the bottom end of the test bench, a supporting device is provided on the base, a mounting platform is provided on one side of the test bench, the mounting platform is horizontally connected to the simulation pipeline, and the valve body is vertically installed at the top end of the simulation pipeline.

[0011] Preferably, the test bench is provided with a back plate, the fixing assembly and the cleaning assembly are arranged on the back plate, the cleaning assembly is arranged above the fixing assembly, a driving motor is provided on one side inside the back plate, a bidirectional screw rod is provided at the execution end of the driving motor, threaded blocks are provided on both sides of the bidirectional screw rod, the threaded block is provided with a clamping rod close to the valve body, and a fixed rubber pad is provided on the opposite side of the two clamping rods.

[0012] Preferably, a unidirectional screw rod is provided above the bidirectional screw rod, a conveyor belt is provided between the end of the bidirectional screw rod away from the drive motor and the unidirectional screw rod, a moving block is provided on the unidirectional screw rod, and a cleaning brush is provided on the side of the moving block close to the valve body.

[0013] Preferably, a gear bar is provided in the back plate near the top of the moving block, a first gear and a second gear are provided on both sides of the moving block from top to bottom, a tilting block is provided on the second gear, a limiting sleeve is provided outside the tilting block, the folding bellows is arranged on both sides of the cleaning brush, a pressure rod is provided on the side of the folding bellows close to the tilting block, a nozzle is provided on the end of the folding bellows close to the valve body, a fixing ring is provided between the folding bellows and the cleaning brush, and a reset spring is provided between the limiting sleeve and the folding bellows.

[0014] Preferably, the threaded block and the moving block are respectively connected to the bidirectional screw and the unidirectional screw nut, the gear bar, the first gear and the second gear are hinged to each other, and the pressure rod is fixedly connected to the folding bellows and movably connected to the tilting block.

[0015] Preferably, a telescopic cylinder is provided at the top of the test bench, an actuating end of the telescopic cylinder is close to the valve body and an actuating motor is provided at the actuating end of the telescopic cylinder, and a clamping block is provided at the actuating end of the actuating motor.

[0016] Preferably, the clamping rod is arranged between the valve body and the simulation pipeline.

[0017] Preferably, the nozzle is arranged in a rectangular shape, and the length of the nozzle is larger than the diameter of the valve body.

[0018] The present invention has the following beneficial effects:

[0019] 1. Before the fatigue test of the valve, clamp the valve by bringing the clamping rods close to each other, and when the clamping rods are close, the conveyor belt rotates to drive the cleaning brush to brush the valve to clean the dust and impurities attached to it;

[0020] 2. When the moving block moves, the gear rotates through the gear bar, causing the tilting block to repeatedly press against the pressure rod, driving the folding bellows to move back and forth, repeatedly blowing out the stored air inside, and removing the dust on the valve. The cleaning brush is then used to further enhance cleaning.

[0021] 3. The drive of a driving motor drives the transmission of the bidirectional screw, conveyor belt and unidirectional screw, saving energy. When the clamping rod is clamped, the cleaning brush is driven to move and brush synchronously, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the overall structure of a valve fatigue testing device proposed by the present invention;

[0023] Figure 2 This is a schematic plan view of the overall structure of a valve fatigue testing device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the back plate structure of a valve fatigue testing device proposed by the present invention;

[0025] Figure 4 This is a three-dimensional diagram of the structure of the fixing assembly and cleaning assembly of a valve fatigue testing device proposed by the present invention;

[0026] Figure 5 This is a three-dimensional diagram of the structure of the fixing assembly and cleaning assembly of a valve fatigue testing device proposed by the present invention;

[0027] Figure 6 This is a three-dimensional diagram of the cleaning component structure of a valve fatigue testing device proposed by the present invention;

[0028] Figure 7 This is a three-dimensional diagram of the cleaning component structure of a valve fatigue testing device proposed by the present invention.

[0029] In the figure: 1. Test bench; 101. Support device; 102. Back plate; 2. Mounting assembly; 201. Base; 202. Mounting table; 203. Simulated pipeline; 204. Valve body; 3. Fixing assembly; 301. Drive motor; 302. Bidirectional screw rod; 303. Threaded block; 304. Clamping rod; 305. Fixed rubber pad; 4. Cleaning assembly; 401. One-way screw rod; 402. Moving block; 403. Gear bar; 404. First gear; 405. Second gear; 406. Tilt block; 407. Limiting sleeve; 408. Folding bellows; 409. Fixing ring; 410. Cleaning brush; 411. Pressure rod; 412. Nozzle; 413. Return spring; 5. Conveyor belt; 6. Test assembly; 601. Telescopic cylinder; 602. Actuator motor; 603. Clamping block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1:

[0032] Reference Figure 1-7 , a valve fatigue test device, comprising a test bench 1, the test bench 1 comprising an installation component 2, a fixing component 3, a cleaning component 4 and a test component 6;

[0033] The fixing assembly 3 clamps and fixes both sides of the valve body 204 through the clamping rod 304 to prevent the valve body 204 from shaking during the test;

[0034] The cleaning assembly 4 includes a folding bellows 408 and a cleaning brush 410. The cleaning assembly 4 is used to clean the impurities attached to the valve body 204 before and after the test to improve the stability of the test.

[0035] A back plate 102 is provided on the test bench 1, and a fixing component 3 and a cleaning component 4 are arranged on the back plate 102. The cleaning component 4 is arranged above the fixing component 3. A driving motor 301 is provided on one side of the back plate 102. A bidirectional screw rod 302 is provided at the execution end of the driving motor 301. Threaded blocks 303 are provided on both sides of the bidirectional screw rod 302. A clamping rod 304 is provided on the threaded block 303 near the valve body 204. A fixed rubber pad 305 is provided on the opposite side of the two clamping rods 304. A unidirectional screw rod 401 is provided above the bidirectional screw rod 302. A conveyor belt 5 is provided between the end of the bidirectional screw rod 302 away from the driving motor 301 and the unidirectional screw rod 401. A moving block 402 is provided on the unidirectional screw rod 401. A cleaning brush 410 is provided on the side of the moving block 402 close to the valve body 204.

[0036] A gear bar 403 is provided inside the back plate 102 near the top of the moving block 402, and a first gear 404 and a second gear 405 are provided on both sides of the moving block 402 from top to bottom. A tilting block 406 is provided on the second gear 405, and a limiting sleeve 407 is provided outside the tilting block 406. A folding bellows 408 is provided on both sides of the cleaning brush 410, and a pressure rod 411 is provided on the side of the folding bellows 408 close to the tilting block 406. A nozzle 412 is provided at the end of the folding bellows 408 close to the valve body 204, and a fixing ring 409 is provided between the folding bellows 408 and the cleaning brush 410, and a return spring 413 is provided between the limiting sleeve 407 and the folding bellows 408.

[0037] The threaded block 303 and the moving block 402 are respectively connected to the bidirectional screw rod 302 and the unidirectional screw rod 401 nut. The gear bar 403, the first gear 404 and the second gear 405 are hinged to each other. The pressure rod 411 is fixedly connected to the folding bellows 408 and movably connected to the tilting block 406.

[0038] The nozzle 412 is rectangular in shape, and the length of the nozzle 412 is greater than the diameter of the valve body 204 .

[0039] In this embodiment, it should be noted that: when performing a fatigue test on the valve body 204, the valve body 204 that has been checked to meet the test standards is installed on the simulated pipeline 203. Before performing the fatigue test on it, the valve body 204 is first cleaned.

[0040] The driving motor 301 starts and drives the bidirectional screw rod 302 to rotate forward, and the threaded blocks 303 connected to the nuts on both sides of the bidirectional screw rod 302 approach each other, so that the clamping rod 304 approaches the bottom end of the valve body 204 to clamp it. The fixed rubber pad 305 enhances the friction force on the one hand, and on the other hand, the fixed rubber pad 305 can buffer the gap between the clamping rod 304 and the valve body 204, thereby preventing the clamping rod 304 from causing damage to the valve body 204.

[0041] When the bidirectional screw rod 302 rotates forward, the conveyor belt 5 rotates synchronously and drives the one-way screw rod 401 to rotate. The moving block 402 connected to the nut of the one-way screw rod 401 moves on the one-way screw rod 401, driving the cleaning brush 410 to brush the valve body 204.

[0042] Cleaning brush 410 can be made of nylon or pig bristle, depending on your needs. Nylon brushes are flexible and wear-resistant, and won't scratch valve surfaces. They're suitable for cleaning valves of various materials, especially plastic valves or valves with coatings. Nylon brushes also have a certain degree of chemical resistance and can be used in a variety of media. Pig bristle brushes are soft and elastic, able to penetrate into the tiny gaps and holes in valves to remove dust, debris, and other impurities without damaging the valve surface. They are commonly used to clean valves with high cleanliness requirements and sensitive surfaces, such as instrument valves and small precision valves.

[0043] When the moving block 402 moves, the first gear 404 will engage and rotate with the gear bar 403. When the first gear 404 rotates, it drives the second gear 405 to rotate, and then the tilting block 406 installed on the second gear 405 rotates. When the tilting block 406 rotates, it drives the pressure rod 411 to move on the spiral surface of the tilting block 406, and then drives the pressure rod 411 to squeeze the folding bellows 408 back and forth. The structure of the folding bellows 408 is similar to that of a folding air pump, so when the pressure rod 411 moves on the tilting block 406 and performs piston movement based on the position pull of the return spring 413, it drives the folding bellows 408 to fold and unfold, so that it is in a state of storing and exhausting air, blowing impurities attached to the valve body 204, and cleaning it with the attached cleaning brush 410.

[0044] When the test is finished, the driving motor 301 rotates in the reverse direction, the clamping rod 304 is released, and the cleaning brush 410 is reset to clean the valve body 204 after the test again to remove impurities and dust caused by the test.

[0045] Example 2:

[0046] The difference from the first embodiment is that, referring to Figure 1-2 This embodiment also has the following further content: the installation component 2 includes a simulated pipeline 203 and a valve body 204, and the installation component 2 is used to install the valve body 204 that needs to be tested.

[0047] A base 201 is provided at the bottom of the test bench 1, and a supporting device 101 is provided on the base 201. A mounting platform 202 is provided on one side of the test bench 1. The mounting platform 202 is horizontally connected to the simulation pipeline 203, and the valve body 204 is vertically installed at the top of the simulation pipeline 203.

[0048] In this embodiment, it should be noted that the simulation pipeline 203 and the mounting platform 202 are detachably connected to facilitate the installation and fixation of the valve body 204. At the same time, in addition to the components mentioned above, the test bench 1 also has various sensors, such as pressure sensors, displacement sensors, temperature sensors, force sensors, and leakage sensors, to collect various data in the valve fatigue test.

[0049] Example 3:

[0050] Reference Figure 1-2 Compared with the first and second embodiments, in this embodiment: the test assembly 6 performs a fatigue test operation on the valve body 204 by executing the motor 602 and the clamping block 603.

[0051] A telescopic cylinder 601 is provided at the top of the test bench 1 . The execution end of the telescopic cylinder 601 is close to the valve body 204 and the execution end of the telescopic cylinder 601 is provided with an execution motor 602 . The execution end of the execution motor 602 is provided with a clamping block 603 .

[0052] The clamping rod 304 is disposed between the valve body 204 and the simulation pipeline 203 .

[0053] In this embodiment, it should be noted that: after the valve 204 is installed and clamped, the telescopic cylinder 601 is started to drive the actuator motor 602 to move downward, so that the clamping block 603 is inserted into the top of the valve body 204, and the actuator motor 602 rotates forward and reverse, driving the valve body 204 to open and close repeatedly to perform fatigue testing.

Claims

1. A valve fatigue test device, comprising a test bench (1), characterized in that: The test bench (1) comprises a mounting assembly (2), a fixing assembly (3), a cleaning assembly (4) and a test assembly (6); The installation assembly (2) comprises a simulated pipeline (203) and a valve body (204), and the installation assembly (2) is used to install the valve body (204) to be tested; The fixing assembly (3) clamps and fixes both sides of the valve body (204) via the clamping rod (304) to prevent the valve body (204) from shaking during the test; The cleaning assembly (4) comprises a folded bellows (408) and a cleaning brush (410), and the cleaning assembly (4) is used to clean impurities attached to the valve body (204) before and after the test, thereby improving the stability of the test; The test assembly (6) performs a fatigue test operation on the valve body (204) by executing the motor (602) and the clamping block (603).

2. A valve fatigue testing device according to claim 1, characterized in that: The bottom end of the test bench (1) is provided with a base (201), and the base (201) is provided with a supporting device (101). One side of the test bench (1) is provided with a mounting platform (202), and the mounting platform (202) is horizontally connected to the simulation pipeline (203). The valve body (204) is vertically installed on the top of the simulation pipeline (203).

3. A valve fatigue testing device according to claim 2, characterized in that: The test bench (1) is provided with a back plate (102), the fixing assembly (3) and the cleaning assembly (4) are arranged on the back plate (102), the cleaning assembly (4) is arranged above the fixing assembly (3), a driving motor (301) is provided on one side inside the back plate (102), a bidirectional screw rod (302) is provided at the execution end of the driving motor (301), thread blocks (303) are provided on both sides of the bidirectional screw rod (302), a clamping rod (304) is provided on the thread block (303) close to the valve body (204), and a fixed rubber pad (305) is provided on the opposite side of the two clamping rods (304).

4. A valve fatigue testing device according to claim 3, characterized in that: A unidirectional screw rod (401) is provided above the bidirectional screw rod (302), a conveyor belt (5) is provided between the end of the bidirectional screw rod (302) away from the drive motor (301) and the unidirectional screw rod (401), a moving block (402) is provided on the unidirectional screw rod (401), and a cleaning brush (410) is provided on the side of the moving block (402) close to the valve body (204).

5. A valve fatigue testing device according to claim 4, characterized in that: A gear bar (403) is provided in the back plate (102) near the top of the moving block (402), a first gear (404) and a second gear (405) are provided on both sides of the moving block (402) from top to bottom, a tilting block (406) is provided on the second gear (405), a limiting sleeve (407) is provided outside the tilting block (406), the folding bellows (408) is arranged on both sides of the cleaning brush (410), a pressing rod (411) is provided on the side of the folding bellows (408) close to the tilting block (406), a nozzle (412) is provided on the end of the folding bellows (408) close to the valve body (204), a fixing ring (409) is provided between the folding bellows (408) and the cleaning brush (410), and a return spring (413) is provided between the limiting sleeve (407) and the folding bellows (408).

6. A valve fatigue testing device according to claim 5, characterized in that: The threaded block (303) and the moving block (402) are respectively connected to the bidirectional screw rod (302) and the unidirectional screw rod (401) nuts, the gear bar (403), the first gear (404) and the second gear (405) are hinged to each other, and the pressing rod (411) is fixedly connected to the folding bellows (408) and movably connected to the tilting block (406).

7. A valve fatigue testing device according to claim 6, characterized in that: A telescopic cylinder (601) is provided at the top of the test bench (1), an actuating end of the telescopic cylinder (601) is close to the valve body (204), an actuating motor (602) is provided at the actuating end of the telescopic cylinder (601), and a clamping block (603) is provided at the actuating end of the actuating motor (602).

8. A valve fatigue testing device according to claim 7, characterized in that: The clamping rod (304) is arranged between the valve body (204) and the simulation pipeline (203).

9. A valve fatigue testing device according to claim 8, characterized in that: The nozzle (412) is arranged in a rectangular shape, and the length of the nozzle (412) is greater than the diameter of the valve body (204).

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