Differential type multi-station valve test bench

Abstract

The utility model relates to the technical field of valve detection, in particular to a differential type multi-station valve test bench which comprises a support, an experiment table is arranged between the bottom ends of the support, cylinders are symmetrically arranged on a top plate of the support, a pressing disc is fixed to the output ends of the cylinders, vertical shafts installed on the top plate of the support are symmetrically arranged on the two sides of the pressing disc, and the vertical shafts are arranged on the top plate of the support. A vertical shaft is arranged on the top of the experiment table, a push sleeve slidably sleeves the vertical shaft, a telescopic column is arranged on the outer side of the push sleeve, pressing rods are arranged on the two sides of the top of the pressing disc, supporting blocks corresponding to the pressing rods in position are arranged on one side of the push sleeve, and arc-shaped clamps are symmetrically arranged on the two sides of the top of the experiment table. According to the differential type multi-station valve test bench, the buffer structure is additionally arranged to absorb impact energy in the rapid clamping and loosening process of the valve, efficient detection is guaranteed, meanwhile, the structural integrity of the valve is maintained, the test precision is guaranteed, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, in particular to a differential-speed multi-position valve test bench. Background Art

[0002] As a key component for controlling and regulating fluid flow, valves play a vital role in many industries. Ensuring the functional reliability and safety of valves, especially their sealing performance and pressure bearing capacity, is essential for preventing accidents, protecting the environment, improving efficiency and saving resources. Therefore, after production, valves must undergo a series of rigorous tests to verify whether they meet the design standards and relevant safety regulations. These tests mainly include sealing tests and strength (pressure) tests.

[0003] The patent with publication number CN218444365U discloses a multi-station valve test bench. The utility model adopts a multi-station design. Each cylinder has a control valve that independently controls the air source. When all control valves are closed and the air source is open, the control valves can be actuated one by one to achieve clamping and loosening of multiple valve test benches one by one. When all control valves are open, multiple valve test benches can be clamped and loosened at one time by opening / closing the air source, which greatly improves the valve test efficiency and the production efficiency per unit time, and has a greater economic effect; the gas-driven cylinder replaces manpower to rotate the screw to tighten and loosen the valve, which not only improves the test efficiency, but also reduces the labor intensity of workers; it solves the problem that the existing valve test bench has only one test station and requires manual operation, resulting in low production efficiency and high labor intensity.

[0004] Although the above scheme has significantly improved the efficiency of valve testing and reduced labor intensity, there is still a potential problem, that is, the rapid handling of the valve lacks the necessary buffer protection measures, which can easily lead to impact force at the moment of clamping or loosening. This instantaneous impact force is not only easy to damage the fine structure of the valve, especially those high-end valves with precision structure or fragile materials, but also cause small displacements during the test. In severe cases, it will affect the sealing evaluation and pressure test accuracy of the valve. In the long run, the rapid operation strategy without buffering will accelerate the wear of the test bench itself and the valve to be tested, shortening their service life. In view of the above problems, designing a differential multi-station valve test bench that integrates an efficient buffer system to maintain the structural integrity of the valve, ensure test accuracy, and extend the service life of the equipment while ensuring efficient detection has become an urgent need and important development direction for the upgrading of valve detection technology. Utility Model Content

[0005] The purpose of the utility model is to provide a differential multi-station valve test bench to solve the problem raised in the above background technology that the current valve test bench lacks necessary buffer protection measures for the rapid processing of valves, resulting in impact force damaging the valve structure when clamping and loosening, affecting the test accuracy and shortening the life of the equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a differential multi-position valve test bench, comprising a bracket, a laboratory bench is provided between the bottom ends of the bracket, and a cylinder is symmetrically provided on the top plate of the bracket, a pressure plate is fixed to the output end of the cylinder, and vertical shafts installed on the top plate of the bracket are symmetrically provided on both sides of the pressure plate, a push sleeve is provided on the external sliding sleeve of the vertical shaft, a telescopic column is provided on the outer side of the push sleeve, and pressure rods are provided on both sides of the top of the pressure plate, a support block corresponding to the position of the pressure rod is provided on one side of the push sleeve, and clamps are symmetrically provided on both sides of the top of the laboratory bench.

[0007] Preferably, both sides of the top of the laboratory bench are provided with empty grooves, and hydraulic push rods are symmetrically arranged inside the empty grooves, and a push block is fixed to the output end of the hydraulic push rod, and the top end of the push block extends to the outside of the top of the laboratory bench and is fixedly connected to the bottom end of the clamp.

[0008] Preferably, a plurality of adjusting studs are evenly inserted into the clamp through a threaded structure, and a pressing block is fixed to one end of the adjusting stud located inside the clamp.

[0009] Preferably, the outer sleeve at the top end of the vertical shaft is provided with a fixed ring, and an elastic rope is symmetrically connected between the fixed ring and the top of the push sleeve.

[0010] Preferably, the telescopic column consists of a lower pressure rod, an upper sleeve and a compression spring, the upper sleeve is fixed to one side of the outer wall of the push sleeve, the compression spring is arranged inside the top end of the upper sleeve, and the upper end of the lower pressure rod movably extends into the interior of the upper sleeve and is connected to the compression spring.

[0011] Preferably, a threaded interface is provided at the connection between the bottom of the bracket top plate and the vertical axis, and a threaded structure is provided on the outer wall of the top end of the vertical axis.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the differential multi-station valve test bench absorbs the impact energy during the rapid clamping and loosening of the valve by adding a buffer structure, ensuring efficient detection while maintaining the structural integrity of the valve, ensuring the test accuracy, and extending the service life of the equipment. The differential multi-station valve test bench symmetrically installs vertical shafts on both sides of the pressure plate. The push sleeves on the outside of the vertical shafts can move downward synchronously with the pressure plate under the cooperation of the pressure rod and the support block. When the push sleeves move downward, they can pre-drive the telescopic column to flexibly press against the table surface of the test bench. In this way, the telescopic column forms a buffer zone. When the pressure plate continues to apply pressure during its detection process, any impact energy that may be generated will be effectively absorbed by the telescopic column, significantly reducing the mechanical shock directly transmitted to the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a differential multi-position valve test bench of the utility model;

[0014] Figure 2 This is a schematic diagram of the external structure of the vertical axis of a differential multi-position valve test bench of the utility model;

[0015] Figure 3 The utility model is a schematic diagram of the top structure of a differential multi-position valve test bench.

[0016] In the figure: 1. bracket; 2. test bench; 3. cylinder; 4. pressure plate; 5. vertical axis; 6. push sleeve; 7. telescopic column; 71. lower pressure rod; 72. sleeve; 73. compression spring; 8. pressure rod; 9. support block; 10. fixing ring; 11. elastic rope; 12. clamp; 13. adjusting stud; 14. pressure block; 15. empty slot; 16. hydraulic push rod; 17. push block. DETAILED DESCRIPTION

[0017] The following will be combined with 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 in 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.

[0018] See also Figure 1-3The utility model provides a technical solution: a differential multi-station valve test bench, comprising a bracket 1, a top plate is welded and fixed between the top ends of the brackets 1, a test bench 2 is arranged between the bottom ends of the brackets 1, an angle steel is welded and fixed to the inner side of the bottom end of the bracket 1, and the angle steel can firmly support the test bench 2, and a cylinder 3 is symmetrically fixed to the top plate of the bracket 1 by bolts, the output end of the cylinder 3 passes through the bottom of the top plate of the bracket 1 and is fixed with a pressure plate 4, both sides of the pressure plate 4 are symmetrically provided with vertical shafts 5 installed on the top plate of the bracket 1, and each group of vertical shafts 5 is symmetrically distributed on both sides of the pressure plate 4, the external sliding sleeve of the vertical shaft 5 is provided with a push sleeve 6, and a telescopic column 7 is fixed to the outside of the push sleeve 6, and pressure rods 8 are fixed to both sides of the top of the pressure plate 4 by screws, and one side of the push sleeve 6 is welded A support block 9 corresponding to the position of the pressure rod 8 is fixed, and arc-shaped clamps 12 are symmetrically arranged on both sides of the top of the experimental table 2. The experimental table 2 with this structure can be firmly clamped by placing two valves on its top and using the clamps 12. When the cylinder 3 drives the pressure plate 4 downward on the top plate of the bracket 1 to detect the pressure of the valve, the pressure plate 4 can press the support block 9 through the pressure rod 8 during the downward advancement of the pressure plate 4 to make the push sleeve 6 synchronously slide downward on the outside of the vertical axis 5. During the sliding process of the push sleeve 6, the telescopic column 7 will be driven in advance to flexibly press against the table top of the experimental table 2, so that the pressure plate 4 will be buffered under the force of the telescopic column 7 to absorb part of the impact energy, significantly reducing the mechanical impact directly transmitted to the valve, thereby protecting the valve structure. In order to ensure that the structure is not damaged and the accuracy of the detection and the long-term reliability of the valve are ensured, both sides of the top of the experimental table 2 are provided with empty grooves 15, and hydraulic push rods 16 are symmetrically fixedly installed inside the empty grooves 15. The output shafts of each group of hydraulic push rods 16 are in different directions, and a push block 17 is welded and fixed to the output end of the hydraulic push rod 16, and the top of the push block 17 extends to the outside of the top of the experimental table 2 and is fixedly connected to the bottom end of the fixture 12. A transverse opening that matches the push block 17 structure is provided on the top wall of the empty groove 15. When each group of hydraulic push rods 16 of this structure is driven, it will drive the push block 17 to move in the transverse opening on the empty groove 15 to generate linkage with the fixture 12, which enables each group of fixtures 12 to quickly close or move away from each other on the top of the experimental table 2 to achieve rapid valve adjustment. The function of precise positioning is to ensure the stability of the valve when it is tested on the top of the test bench 2. A number of adjusting studs 13 are evenly interspersed on the clamp 12 through a threaded structure, and a pressing block 14 is fixed at one end of the adjusting stud 13 located on the inner side of the clamp 12. The adjusting stud 13 of this structure can adjust a number of pressing blocks 14 to different positions by rotating on the clamp 12. In this way, when each set of clamps 12 is closed, the pressing blocks 14 can be pressed against different positions on the outer wall of the valve to adapt to the precise positioning of valves with more complex specifications, ensure that the valve is fixed in position during the test process, and prevent test errors caused by vibration or external forces. A fixed ring 10 is provided on the outer sleeve of the top of the vertical shaft 5, and the connection between the fixed ring 10 and the vertical shaft 5 is fixed by welding.The top of the push sleeve 6 is symmetrically connected with an elastic rope 11. When the pressure plate 4 of this structure is retracted upward and does not exert force on the push sleeve 6, the push sleeve 6 will quickly reset under the elastic tension of the elastic rope 11, thereby improving its practicality. The telescopic column 7 is composed of a lower pressure rod 71, an upper sleeve 72 and a compression spring 73. The upper sleeve 72 is fixed to one side of the outer wall of the push sleeve 6, and the compression spring 73 is arranged inside the top of the upper sleeve 72. The top of the compression spring 73 is fixedly connected to the top inner wall of the upper sleeve 72, and the upper end of the lower pressure rod 71 is movably extended into the upper sleeve 7 2 and connected to the compression spring 73. When the bottom end of the lower pressure rod 71 of this structure is pressed against the surface of the experimental table 2, it will shrink inside the upper sleeve 72 and squeeze the compression spring 73, so that the telescopic column 7 is flexibly pressed against the surface of the experimental table 2 to achieve a buffering effect. The bottom of the top plate of the bracket 1 and the connection between the vertical axis 5 are both provided with a threaded interface, and the outer wall of the top of the vertical axis 5 is provided with a threaded structure. The vertical axis 5 of this structure can be quickly installed in the threaded interface at the bottom of the top plate of the bracket 1 through the threaded structure at the top, and the disassembly process is more convenient.

[0019] Working principle: When using the differential multi-position valve test bench, firstly, place two valves on the top of the test bench 2 and respectively between two groups of fixtures 12, then pre-rotate the adjusting stud 13 on the fixture 12 according to the specifications of the valve, and when the adjusting stud 13 is rotated, several pressing blocks 14 can be adjusted to different positions respectively, until several pressing blocks 14 are adjusted to appropriate positions, and each group of hydraulic push rods 16 is started, and when the hydraulic push rods 16 are driven, the push blocks 17 will be driven to move in the horizontal opening on the empty slot 15, so that each group of fixtures 12 can be quickly closed with each other on the top of the test bench 2, until each group of fixtures 12 presses the pressing blocks 14 against different positions of the outer wall of the valve for positioning, and then the cylinder 3 is started, and the cylinder 3 When driven on the top plate of the bracket 1, the pressure plate 4 will be driven to move downward. During the downward movement of the pressure plate 4, the support block 9 will be pressed by the pressure rod 8. When the support block 9 is subjected to force, the push sleeve 6 will slide downward synchronously on the outside of the vertical axis 5. During the sliding process of the push sleeve 6, the telescopic column 7 will be driven in advance to flexibly press against the table surface of the experimental table 2. When the telescopic column 7 is pressed, its lower pressure rod 71 will shrink inside the upper sleeve 72 and squeeze the compression spring 73. In this way, the pressure plate 4 will be buffered under the action of the telescopic column 7 to absorb part of the impact energy. At the same time, when the pressure plate 4 is recovered upward and does not generate pressure on the push sleeve 6, the push sleeve 6 will generate elastic tension on the elastic rope 11 with the cooperation of the fixed ring 10, so as to quickly slide upward for reset, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A differential multi-position valve test bench, comprising a bracket (1), a test bench (2) being arranged between the bottom ends of the bracket (1), and cylinders (3) being symmetrically arranged on the top plate of the bracket (1), a pressure plate (4) being fixed at the output end of the cylinder (3), characterized in that: Vertical shafts (5) mounted on the top plate of the bracket (1) are symmetrically provided on both sides of the pressure plate (4), a push sleeve (6) is provided on the outer sliding sleeve of the vertical shaft (5), a telescopic column (7) is provided on the outer side of the push sleeve (6), and pressure rods (8) are provided on both sides of the top of the pressure plate (4), a support block (9) corresponding to the position of the pressure rod (8) is provided on one side of the push sleeve (6), and clamps (12) are symmetrically provided on both sides of the top of the experimental table (2).

2. A differential multi-position valve test bench according to claim 1, characterized in that: Empty grooves (15) are provided on both sides of the interior of the top of the experimental table (2), and hydraulic push rods (16) are symmetrically provided inside the empty grooves (15), and a push block (17) is fixed to the output end of the hydraulic push rod (16), and the top end of the push block (17) extends to the outside of the top of the experimental table (2) and is fixedly connected to the bottom end of the clamp (12).

3. The differential multi-position valve test bench according to claim 1, characterized in that: A plurality of adjusting studs (13) are evenly inserted through the clamp (12) via a threaded structure, and a pressing block (14) is fixed to one end of the adjusting stud (13) located inside the clamp (12).

4. The differential multi-position valve test bench according to claim 1, characterized in that: A fixing ring (10) is provided on the outer sleeve of the top end of the vertical shaft (5), and an elastic rope (11) is symmetrically connected between the fixing ring (10) and the top of the push sleeve (6).

5. The differential multi-position valve test bench according to claim 1, characterized in that: The telescopic column (7) is composed of a lower pressure rod (71), an upper sleeve (72) and a compression spring (73), wherein the upper sleeve (72) is fixed to one side of the outer wall of the push sleeve (6), the compression spring (73) is arranged inside the top end of the upper sleeve (72), and the upper end of the lower pressure rod (71) is movably extended into the interior of the upper sleeve (72) and connected to the compression spring (73).

6. The differential multi-position valve test bench according to claim 1, characterized in that: A threaded interface is provided at the connection between the bottom of the top plate of the bracket (1) and the vertical shaft (5), and a threaded structure is provided on the outer wall of the top end of the vertical shaft (5).

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