Hydraulic valve leakage and pressure resistance detection equipment

Abstract

The utility model relates to the technical field of hydraulic valve detection, in particular to hydraulic valve leakage and pressure resistance detection equipment which comprises a main frame, a fixing plate is fixedly installed in the middle of the main frame, a sealing cavity is formed in the middle of the fixing plate, an inserting groove is formed in one side of the middle of the sealing cavity, a sealing pipe is inserted in the upper portion of the sealing cavity, and a sealing groove is formed in the lower portion of the sealing pipe. An inserting rod is fixedly installed on one side of the lower end of the sealing pipe, a clamping groove is formed in one side of the lower end of the inserting rod, a movable groove is formed in one side of the middle of the fixing plate, a limiting groove is formed in the middle of one side of the movable groove, a spring is fixedly installed in the middle of one end of the movable groove, and a sliding rod is fixedly installed at one end of the spring. And a pressing rod is fixedly mounted at one end of the sliding rod. According to the utility model, the problems that the traditional detection equipment is relatively fixed in design, flange plates with different specifications are difficult to flexibly replace to adapt to hydraulic valves with different sizes, and many defects exist in actual use are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve testing technology, specifically to a hydraulic valve leakage and pressure resistance testing device. Background Technology

[0002] A hydraulic valve is a component used to control the flow direction, pressure, and flow rate of hydraulic fluid in a hydraulic system. It plays a crucial role in the hydraulic system. After production, it typically undergoes sealing and pressure resistance testing. Sealing testing prevents oil leakage during operation. Leakage not only wastes oil but can also lead to system pressure drops, malfunctioning actuators, and even environmental contamination and safety accidents. Pressure resistance testing focuses on verifying the structural strength and sealing performance of the hydraulic valve under the system's maximum operating pressure, or even higher pressures. This ensures that the valve will not crack or deform under extreme conditions, guaranteeing the long-term stable and reliable operation of the hydraulic system.

[0003] Traditional testing equipment has a relatively fixed design, making it difficult to flexibly replace flanges of different specifications to adapt to hydraulic valves of different sizes, which has many shortcomings in practical use. For example, when testing multiple models of hydraulic valves, traditional equipment cannot be adapted to the interfaces of new specifications of hydraulic valves, requiring the purchase of multiple dedicated testing devices, which significantly increases equipment purchase costs and maintenance expenses. In addition, frequent equipment changes also require a lot of time to disassemble, reinstall flanges and debug before testing, which greatly reduces testing efficiency and affects production schedules. Utility Model Content

[0004] One of the technical problems this application aims to solve is that traditional testing equipment has a relatively fixed design, making it difficult to flexibly replace flanges of different specifications to adapt to hydraulic valves of different sizes, which has many shortcomings in actual use.

[0005] To address the aforementioned technical problems, this application provides a hydraulic valve leakage and pressure resistance testing device, comprising a main frame, a fixed plate fixedly installed in the middle of the main frame, a sealing cavity formed in the middle of the fixed plate, a slot formed on one side of the middle of the sealing cavity, a sealing tube inserted into the upper part of the sealing cavity, an insertion rod fixedly installed on one side of the lower end of the sealing tube, a slot formed on one side of the lower end of the insertion rod, a movable groove formed on one side of the middle of the fixed plate, a limit groove formed in the middle of one side of the movable groove, a spring fixedly installed in the middle of one end of the movable groove, a sliding rod fixedly installed on one end of the spring, a pressing rod fixedly installed on one end of the sliding rod, and locking blocks fixedly installed at both ends of the middle of one side of the sliding rod.

[0006] In some embodiments, a placement space is formed between the lower end of the fixing plate and the bottom of the main frame. An oil storage tank is fixedly installed on one side of the middle of the placement space, and a liquid pump is fixedly installed on the other side of the middle of the placement space. An injection pipe is connected and fixed to one side of the oil storage tank.

[0007] In some embodiments, a connecting pipe is fixedly connected to the other side of the oil storage tank, one end of the connecting pipe is fixedly connected to the input end of the liquid pump, and a liquid guide pipe is fixedly connected to the output end of the liquid pump, one end of the liquid guide pipe is fixedly connected to the sealing cavity.

[0008] In some embodiments, the slot and the movable groove are connected, one of the locking blocks and the slot are slidably engaged, and the other locking block abuts against the inner wall of the movable groove near the pressing rod.

[0009] In some embodiments, a positioning groove is provided on the other side of the middle of the sealing cavity, and a positioning rod is fixedly installed on the other side of the lower end of the sealing tube, the positioning rod and the positioning groove being connected.

[0010] In some embodiments, a flange is fixedly installed at the upper end of the sealing tube, and the slide rod is slidably engaged in the middle of the movable groove.

[0011] In some embodiments, the insert and the slot are slidably engaged.

[0012] In some embodiments, the sealing cavity and the sealing tube are connected, and the sealing tube is connected to the fixing plate through a plug rod and a positioning rod.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. When in use, this utility model can be adapted to test hydraulic valves of different sizes. When facing the testing needs of hydraulic valves of different sizes and specifications in the market, pressing the pressing rod can realize the engagement or disengagement of the sliding rod and the insert rod, thereby facilitating the quick installation and disassembly of the sealing tube and the upper flange. Different specifications of sealing tubes can be flexibly replaced, so that the flange on the top can be accurately adapted to the interface size of various hydraulic valves, which has higher practicality.

[0015] 2. When in use, this utility model has good sealing performance and is stable and reliable. The sealing tube is connected to the sealing cavity through the insertion rod and positioning rod. With the cooperation of the sliding rod and the locking structure of the slot, a multi-directional stable connection is formed, which ensures that the sealing tube and the sealing cavity fit tightly, prevents oil leakage during testing, and ensures the accuracy of the test results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first appearance structure of the present utility model;

[0017] Figure 2This is a schematic diagram of the second appearance structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the fixing plate and the sealing tube of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixing plate of this utility model.

[0020] In the diagram: 1. Main frame; 11. Placement space; 12. Oil tank; 13. Injection pipe; 14. Liquid pump; 15. Connecting pipe; 16. Liquid guide pipe; 20. Sealing cavity; 2. Fixing plate; 21. Sealing pipe; 22. Insert rod; 23. Slot; 24. Positioning rod; 25. Positioning groove; 26. Slot; 27. Movable groove; 28. Slide rod; 29. ​​Pressing rod; 30. Limiting groove; 31. Spring; 32. Locking block; 33. Flange. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figure 1-4This utility model provides a technical solution: a hydraulic valve leakage and pressure resistance testing device, including a main frame 1, a fixing plate 2 fixedly installed in the middle of the main frame 1, a sealing cavity 20 opened in the middle of the fixing plate 2, a slot 26 opened on one side of the middle of the sealing cavity 20, a sealing tube 21 inserted into the upper part of the sealing cavity 20, an insertion rod 22 fixedly installed on one side of the lower end of the sealing tube 21, a slot 23 opened on one side of the lower end of the insertion rod 22, a movable groove 27 opened on one side of the middle of the middle of the fixing plate 2, a limit groove 30 opened in the middle of one side of the movable groove 27, a spring 31 fixedly installed in the middle of one end of the movable groove 27, a sliding rod 28 fixedly installed on one end of the spring 31, and a pressing rod 29 fixedly installed on one end of the sliding rod 28. Both ends of the middle section of one side of the slide rod 28 are fixedly installed with locking blocks 32. The slot 26 and the movable groove 27 are connected. One of the locking blocks 32 and the slot 23 are slidably engaged. The other locking block 32 abuts against the inner wall of the movable groove 27 near the pressing rod 29. A positioning groove 25 is opened on the other side of the middle section of the sealing cavity 20. A positioning rod 24 is fixedly installed on the other side of the lower end of the sealing tube 21. The positioning rod 24 and the positioning groove 25 are connected. A flange 33 is fixedly installed on the upper end of the sealing tube 21. The slide rod 28 is slidably engaged in the middle of the movable groove 27. The insertion rod 22 and the slot 26 are slidably engaged. The sealing cavity 20 and the sealing tube 21 are connected. The sealing tube 21 is connected to the fixed plate 2 through the insertion rod 22 and the positioning rod 24.

[0023] In this embodiment, pressing the pressing rod 29 causes the sliding rod 28 to move the locking block 32, thereby enabling the insertion rod 22 to engage or disengage from the slot 26. This facilitates the installation and removal of the sealing tube 21, allowing for the rapid replacement of sealing tubes 21 of different specifications to adapt to the testing of different models of hydraulic valves. This improves the versatility and efficiency of the testing equipment. When testing hydraulic valves of different sizes, the corresponding sealing tube 21 can be quickly replaced without complicated operating procedures. The sealing tube 21 is connected to the fixing plate 2 via the insertion rod 22 and the positioning rod 24. The insertion rod 22 has a locking groove 23 that engages with the locking block 32 on the sliding rod 28, and the positioning rod 24 cooperates with the positioning groove 25. This multi-part connection and positioning method ensures a tight connection between the sealing tube 21 and the sealing cavity 20, effectively preventing oil leakage and ensuring... For accurate testing, during leakage and pressure resistance testing of hydraulic valves, a stable sealing structure prevents external air from entering or oil from leaking out, ensuring that the test results are not affected by external factors. A flange 33 is installed at the upper end of the sealing pipe 21 for easy connection to the hydraulic valve under test. The flange 33 connection provides reliable connection strength, ensuring that the hydraulic valve and sealing pipe 21 will not loosen or detach during testing, guaranteeing smooth testing. During high-pressure testing, the flange 33 connection can withstand greater pressure, maintaining a tight connection between the hydraulic valve and sealing pipe 21. The main frame 1 is fixedly mounted with a fixing plate 2, and the sealing cavity 20 is located in the middle of the fixing plate 2. The connections between all components are tight and orderly, resulting in a stable overall structure capable of withstanding the pressure during hydraulic testing, ensuring the reliability and service life of the equipment.

[0024] Example 2: Figure 1-3 As shown, a placement space 11 is formed between the lower end of the fixing plate 2 and the bottom of the main frame 1. An oil storage tank 12 is fixedly installed on one side of the middle of the placement space 11, and a liquid pump 14 is fixedly installed on the other side of the middle of the placement space 11. An injection pipe 13 is fixedly connected to one side of the oil storage tank 12, and a connecting pipe 15 is fixedly connected to the other side of the oil storage tank 12. One end of the connecting pipe 15 is fixedly connected to the input end of the liquid pump 14, and a guide pipe 16 is fixedly connected to the output end of the liquid pump 14. One end of the guide pipe 16 is fixedly connected to the sealing cavity 20.

[0025] In this embodiment, the space between the lower end of the fixed plate 2 and the bottom of the main frame 1 is used to install components such as the oil storage tank 12 and the hydraulic pump 14, making full use of the idle space inside the equipment and making the layout of the entire equipment more reasonable and compact. The oil storage tank 12, hydraulic pump 14, injection pipe 13, connecting pipe 15, and guide pipe 16 constitute a complete oil circulation system. The oil storage tank 12 is used to store hydraulic oil, and the hydraulic pump 14 can draw hydraulic oil from the oil storage tank 12 and deliver it to the sealing cavity 20 through the guide pipe 16, providing the required oil and pressure for the testing of the hydraulic valve. After the test is completed, the oil can flow through the corresponding loop. The return oil tank 12 enables the recycling of oil, reducing oil waste and lowering testing costs. The various components are connected via connecting pipes 15 and guide pipes 16, with a fixed connection method. This connection method ensures the stability of the oil during transportation, preventing oil leakage. A stable oil supply system ensures that the hydraulic valve remains under appropriate pressure and oil conditions during testing, guaranteeing the accuracy and stability of the test and thus improving testing efficiency. Simultaneously, the recycling of oil reduces the time spent on refueling and draining, further enhancing overall testing efficiency.

[0026] like Figure 1-4As shown, the hydraulic valve to be tested is connected and fixed to the upper end of the sealing pipe 21 via flange 33, ensuring a tight connection. At this time, the insertion rod 22 at the lower end of the sealing pipe 21 is inserted into the slot 26 of the sealing cavity 20, and the positioning rod 24 is inserted into the positioning groove 25. Simultaneously, the locking block 32 on the slide rod 28 engages with the locking groove 23 on the insertion rod 22, ensuring a stable connection between the sealing pipe 21 and the sealing cavity 20 and guaranteeing the sealing performance of the sealing cavity 20. Then, the hydraulic pump 14 is started, drawing hydraulic oil from the oil tank 12 through the connecting pipe 15. The hydraulic oil is then transported to the sealing cavity 20 and the hydraulic valve connected to the sealing cavity 20 via the guide pipe 16. As the oil is injected, the pressure in the sealing cavity 20 and the hydraulic valve gradually increases until it reaches the set detection pressure value. Once the pressure reaches the set value, it is maintained for a period of time, typically five to ten minutes. During this period, the pressure resistance of the hydraulic valve is assessed by observing whether there is oil leakage around the hydraulic valve and the sealing cavity 20, or whether the equipment exhibits abnormal deformation or unusual noises. If there is no oil leakage, abnormal deformation of the equipment, or abnormal noise, it indicates that the hydraulic valve can withstand the pressure and has good pressure resistance. If there is oil leakage or abnormal conditions of the equipment, it indicates that the hydraulic valve has a pressure resistance problem. During the entire testing process, carefully observe the sealing cavity 20, the hydraulic valve, and the connection parts for any traces of oil leakage. If oil leakage is found, it indicates that there is a leakage problem in the hydraulic valve; if no leakage is found, it is preliminarily judged that the hydraulic valve has good sealing performance. After the test is completed, turn off the hydraulic pump 14, and let the oil in the sealing chamber 20 and the hydraulic valve flow back to the oil tank 12 through the guide pipe 16 under the action of gravity or other auxiliary power. Then remove the tested hydraulic valve from the sealing pipe 21 to complete a complete test process. When it is necessary to test hydraulic valves of different sizes, the pressing rod 29 can be pressed to make the slide rod 28 drive the locking block 32 to move, thereby realizing the engagement or disengagement of the insertion rod 22 and the slot 26, which facilitates the installation and disassembly of the sealing pipe 21 and the upper flange 33, and is used to replace the sealing pipe 21 of different specifications to adapt to the testing of different models of hydraulic valves.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A hydraulic valve leakage and pressure resistance testing device, comprising a main frame (1), wherein a fixing plate (2) is fixedly installed in the middle of the main frame (1), characterized in that: A sealing cavity (20) is provided in the middle of the fixed plate (2). A slot (26) is provided on one side of the middle of the sealing cavity (20). A sealing tube (21) is inserted into the upper part of the sealing cavity (20). A rod (22) is fixedly installed on one side of the lower end of the sealing tube (21). A slot (23) is provided on one side of the lower end of the rod (22). A movable groove (27) is provided on one side of the middle of the fixed plate (2). A limit groove (30) is provided in the middle of one side of the movable groove (27). A spring (31) is fixedly installed in the middle of one end of the movable groove (27). A slide rod (28) is fixedly installed in one end of the spring (31). A pressing rod (29) is fixedly installed in one end of the slide rod (28). Both ends of the middle of one side of the slide rod (28) are fixedly installed with locking blocks (32).

2. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: A placement space (11) is formed between the lower end of the fixing plate (2) and the bottom of the main frame (1). An oil storage tank (12) is fixedly installed on one side of the middle of the placement space (11), and a liquid pump (14) is fixedly installed on the other side of the middle of the placement space (11). An injection pipe (13) is connected and fixed to one side of the oil storage tank (12).

3. The hydraulic valve leakage and pressure resistance testing equipment according to claim 2, characterized in that: A connecting pipe (15) is fixedly connected to the other side of the oil storage tank (12). One end of the connecting pipe (15) is fixedly connected to the input end of the liquid pump (14). A liquid guide pipe (16) is fixedly connected to the output end of the liquid pump (14). One end of the liquid guide pipe (16) is fixedly connected to the sealing cavity (20).

4. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: The slot (26) and the movable slot (27) are connected, one of the locking blocks (32) and the slot (23) are slidably engaged, and the other locking block (32) abuts against the inner wall of the movable slot (27) near the pressing rod (29).

5. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: A positioning groove (25) is provided on the other side of the middle part of the sealing cavity (20), and a positioning rod (24) is fixedly installed on the other side of the lower end of the sealing tube (21). The positioning rod (24) and the positioning groove (25) are connected.

6. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: A flange (33) is fixedly installed at the upper end of the sealing tube (21), and the slide rod (28) is slidably engaged in the middle of the movable groove (27).

7. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: The insert (22) and the slot (26) are slidably engaged.

8. The hydraulic valve leakage and pressure resistance testing equipment according to claim 1, characterized in that: The sealing cavity (20) and the sealing tube (21) are connected. The sealing tube (21) is connected to the fixing plate (2) through the insertion rod (22) and the positioning rod (24).

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