A hydraulic testing mechanism for an integrated hydraulic cartridge valve

Abstract

This utility model provides an integrated hydraulic cartridge valve testing mechanism, belonging to the field of valve testing technology. It includes a first test pipeline, a first shut-off valve installed at the input end of the first test pipeline, a relief valve detachably installed at the top of the first test pipeline, quick-release structures installed between the first test pipeline and the relief valve, and between the cartridge valve seat and the second test pipeline, respectively, and a closed structure housed inside a fixed sleeve. In this utility model, pulling down the movable sleeve releases the obstruction of the fixing bead, enabling quick insertion and locking of the cartridge valve. During disassembly, pulling the movable sleeve again, combined with the spring force of the return spring, pushes out the cartridge valve without additional tools. This process significantly shortens the replacement time of the relief valve or cartridge valve seat, reduces the difficulty of replacement, improves testing efficiency to a certain extent, and significantly enhances the convenience of the hydraulic testing mechanism.

Description

Technical Field

[0001] This utility model relates to the field of valve testing technology, specifically to a hydraulic testing mechanism for an integrated hydraulic cartridge valve. Background Technology

[0002] Integrated hydraulic cartridge valves are widely used in hydraulic systems, and their performance directly affects system safety and efficiency. Existing testing platforms for hydraulic cartridge valves and relief valves are mostly imported, resulting in high manufacturing costs, complex processing techniques, and difficulty in guaranteeing accuracy. Furthermore, they cannot easily test single functions. Therefore, an integrated hydraulic cartridge valve testing mechanism has been developed. This mechanism effectively solves the above problems, meets diverse testing needs, and improves testing efficiency and convenience.

[0003] Because existing hydraulic cartridge valve and relief valve testing devices mostly adopt an integrated structure, the valve and pipeline are highly integrated. Disassembly requires special tools and the steps are cumbersome, which makes valve replacement not only time-consuming, but also prone to hydraulic oil leakage. It is difficult to quickly complete valve replacement and debugging, which reduces testing efficiency to a certain extent and increases maintenance costs and safety hazards. Utility Model Content

[0004] This invention provides a hydraulic testing mechanism for an integrated hydraulic cartridge valve, which solves the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An embodiment of this utility model provides a hydraulic testing mechanism for an integrated hydraulic cartridge valve, comprising:

[0007] First test pipeline;

[0008] The first shut-off valve is installed at the input end of the first test pipeline, and the input end of the first shut-off valve is connected to a high-pressure pipeline.

[0009] The pressure gauge is detachably installed on one side of the top of the first test pipeline, and the other side of the pressure gauge is provided with an instrument installation interface for connecting to the first test pipeline;

[0010] The second shut-off valve is installed at the output end of the first test pipeline, and one side of the second shut-off valve is connected to the second test pipeline through a pipe.

[0011] A vent valve is detachably installed at the top of the first test line;

[0012] A cartridge valve seat is detachably mounted on the top of the second test line, and a hydraulic cartridge valve is inserted into the inside of the top of the cartridge valve seat;

[0013] A quick-release structure is installed between the first test line and the relief valve, and between the cartridge valve seat and the second test line, respectively. The quick-release structure includes a fixed sleeve fixed to the top of the first test line and the second test line, a movable sleeve slidably connected to the outside of the fixed sleeve, a plug tube inserted into the top of the fixed sleeve and connected to the relief valve or the cartridge valve seat, and a locking component disposed inside the movable sleeve.

[0014] A closed structure, located inside the fixed sleeve, is used to automatically seal the fixed sleeve after the relief valve or cartridge valve seat is pulled out.

[0015] The above technical solution involves delivering hydraulic oil to the input end of the first test pipeline via a high-pressure pipeline to test the relief valve. A pressure gauge monitors the pressure value in the pipeline in real time to provide data support for the test. The hydraulic cartridge valve is then tested using hydraulic oil in the second test pipeline. This allows for simultaneous testing of both the relief valve and the hydraulic cartridge valve, improving testing efficiency.

[0016] Furthermore, a support frame is fixed to the outside of the first test pipeline, and a base is fixed to the bottom of the support frame.

[0017] The above technical solution provides stable support for the entire hydraulic testing mechanism by setting a support frame and fixing the base on the outside of the first test pipeline, distributing the weight of the pipeline and components, and preventing the pipeline from shaking and shifting due to pressure fluctuations.

[0018] Furthermore, the locking assembly includes a telescopic spring fixed inside the movable sleeve and connected to the fixed sleeve, a movable groove opened at the top of the inside of the movable sleeve, a locking groove opened at the bottom of the movable groove, a fixing bead rotatably connected to the inner side wall of the fixed sleeve, and a buckle groove opened on the outside of the insertion tube.

[0019] With the above technical solution, by pulling down the movable sleeve, the insertion tube can be inserted into the fixed sleeve. Then, the fixing bead is embedded in the buckle groove to fix the position of the insertion tube. When disassembly is required, the movable sleeve is pulled down again, and the elastic force of the return spring pushes the insertion tube upward, which assists in the removal of the insertion tube. This reduces the force required for manual insertion and removal to a certain extent, making the disassembly process easier and more convenient.

[0020] Furthermore, the movable sleeve forms a telescopic structure in the vertical direction with the fixed sleeve through a telescopic spring.

[0021] The above technical solution enables the movable sleeve to compress or stretch the spring when subjected to force, flexibly adjust its position, provide space for the movement of the fixed bead, and facilitate the insertion and removal of the connector.

[0022] Furthermore, when the insertion tube is inserted into the fixed sleeve, the telescopic spring is in its natural state, the fixing bead is located inside the locking groove, and the fixing bead is embedded inside the buckle groove.

[0023] By using the above technical solution, the position of the fixing bead in the natural state of the telescopic spring is limited when the insertion tube is inserted into the fixing sleeve, ensuring that the fixing bead can be accurately embedded into the buckle groove after the insertion tube is inserted, thus achieving a stable lock.

[0024] Furthermore, the closed structure includes a fixed seat fixed to the bottom of the fixed sleeve, a movable rod slidably connected inside the fixed seat, a movable ring fixed to the top of the movable rod, a sealing ring fixed to the top of the movable ring, a lower washer fixed to the bottom of the movable ring, a baffle fixed to the outside of the movable rod, a rubber pad fixed to the top of the baffle, a return spring installed on the top of the fixed seat and connected to the baffle, and a stop fixed to the inner side wall of the fixed seat.

[0025] The above technical solution uses a moving ring to separate or close the baffle and the stop seat as the insertion or removal of the connector, thus sealing and opening the inside of the fixed sleeve. This avoids hydraulic oil leakage to a certain extent, ensures the safety and cleanliness of the working environment, and also reduces the waste of hydraulic oil.

[0026] Furthermore, the frontal cross-section of the bottom through hole of the baffle is a funnel-shaped inclined structure, and the shape of the top of the baffle matches the shape of the bottom through hole of the baffle.

[0027] By using the above technical solution, the bottom through hole of the baffle is designed as a funnel-shaped inclined structure, and the top shape of the baffle is matched with it. When the closed structure is working, the baffle can be moved up and fit tightly with the baffle, and the inclined structure enhances the sealing effect.

[0028] The above-described solution of this utility model has at least the following beneficial effects:

[0029] 1. This utility model allows the fixing bead to be released by pulling down the movable sleeve, enabling quick insertion and locking of the insertion tube. During disassembly, pulling the movable sleeve again, combined with the elastic force of the return spring, pushes out the insertion tube without the need for additional tools. This process significantly shortens the replacement time of the relief valve or cartridge valve seat, reduces the difficulty of replacement, improves the testing efficiency to a certain extent, and significantly enhances the convenience of the hydraulic testing mechanism.

[0030] 2. This utility model achieves automatic sealing and opening of the internal channel of the fixed sleeve by moving the ring to separate or close the baffle and the stop seat when the connecting pipe is inserted or pulled out. This design does not require additional manual operation and completes the oil circuit on / off control simultaneously when the components are loaded and unloaded, which avoids hydraulic oil leakage to a certain extent, reduces oil waste, and ensures the safety of the system in the disassembled state, thus improving the reliability and ease of use of the device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 In this utility model Figure 1 Another structural diagram from a different angle;

[0033] Figure 3 This is a partial cross-sectional view of the structure of this utility model;

[0034] Figure 4 Provided by this utility model Figure 3 Enlarged cross-sectional view of a portion of point A in the middle section;

[0035] Figure 5 A three-dimensional cross-sectional structural diagram of the quick-release structure provided by this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. First test pipeline; 2. Quick-release structure; 201. Moving sleeve; 202. Fixing bead; 203. Fixing sleeve; 204. Movable groove; 205. Locking groove; 206. Telescopic spring; 207. Insert pipe; 208. Snap groove; 3. Support frame; 4. First shut-off valve; 5. High-pressure pipeline; 6. Pressure gauge; 7. Relief valve; 8. Hydraulic cartridge valve; 9. Sealing structure; 901. Moving ring; 902. Baffle; 903. Fixed seat; 904. Moving rod; 905. Return spring; 906. Rubber pad; 907. Sealing ring; 908. Lower washer; 909. Stop seat; 10. Cartridge valve seat; 11. Second test pipeline; 12. Second shut-off valve; 13. Base; 14. Instrument mounting interface. Detailed Implementation

[0038] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0039] like Figures 1 to 5 As shown, an embodiment of this utility model provides a hydraulic testing mechanism for an integrated hydraulic cartridge valve, including a first test line 1, and further comprising:

[0040] The first shut-off valve 4 is installed at the input end of the first test pipeline 1, and the input end of the first shut-off valve 4 is connected to the high-pressure pipeline 5.

[0041] Pressure gauge 6 is detachably installed on one side of the top of the first test pipeline 1, and the other side of pressure gauge 6 is provided with an instrument mounting interface 14 connected to the first test pipeline 1.

[0042] The second shut-off valve 12 is installed at the output end of the first test line 1, and one side of the second shut-off valve 12 is connected to the second test line 11 through a pipe.

[0043] The relief valve 7 is detachably installed at the top of the first test pipeline 1;

[0044] The cartridge valve seat 10 is detachably installed at the top of the second test line 11, and a hydraulic cartridge valve 8 is inserted into the inside of the top of the cartridge valve seat 10.

[0045] The quick-release structure 2 is installed between the first test line 1 and the relief valve 7, and between the cartridge valve seat 10 and the second test line 11. The quick-release structure 2 includes a fixed sleeve 203 fixed to the top of the first test line 1 and the second test line 11, a movable sleeve 201 slidably connected to the outside of the fixed sleeve 203, a plug tube 207 inserted into the top of the fixed sleeve 203 and connected to the relief valve 7 or the cartridge valve seat 10, and a locking component disposed inside the movable sleeve 201.

[0046] The closed structure 9 is located inside the fixed sleeve 203 and is used to automatically seal the fixed sleeve 203 after the relief valve 7 or the cartridge valve seat 10 is pulled out.

[0047] The outer side of the first test pipeline 1 is fixed with a support frame 3, and the bottom end of the support frame 3 is fixed with a base 13.

[0048] like Figures 1 to 5 As shown, the locking assembly includes a telescopic spring 206 fixed inside the movable sleeve 201 and connected to the fixed sleeve 203, a movable groove 204 opened at the top of the movable sleeve 201, a locking groove 205 opened at the bottom of the movable groove 204, a fixing bead 202 rotatably connected to the inner side wall of the fixed sleeve 203, and a buckle groove 208 opened on the outside of the insertion tube 207. The movable sleeve 201 forms a telescopic structure in the vertical direction with the fixed sleeve 203 through the telescopic spring 206. When the insertion tube 207 is inserted into the fixed sleeve 203, the telescopic spring 206 is in its natural state, the fixing bead 202 is located inside the locking groove 205, and the fixing bead 202 is embedded inside the buckle groove 208.

[0049] In this embodiment of the invention, when it is necessary to install the relief valve 7 or the cartridge valve seat 10, firstly, by pulling down the movable sleeve 201, the telescopic spring 206 is compressed, causing the movable sleeve 201 to move downward along the outside of the fixed sleeve 203. Then, the fixing bead 202 slides from the locking groove 205 into the movable groove 204, preventing the fixing bead 202 from blocking the insertion of the insertion tube 207. Subsequently, the insertion tube 207 is aligned with the inside of the fixed sleeve 203 and inserted. After the insertion tube 207 is fully inserted, the movable sleeve 201 is released, the telescopic spring 206 returns to its original position, and pushes the movable sleeve 201 upward. At this time, the fixing bead 202 slides back from the movable groove 204 to the locking groove 205, and then the fixing bead 202 is embedded in the buckle on the outside of the insertion tube 207. The insertion tube 207 is fixed in the fixed sleeve 203 within the groove 208, thus completing the quick installation of the relief valve 7 or the cartridge valve seat 10. When disassembly is required, the movable sleeve 201 is pulled down again, and the telescopic spring 206 is compressed, causing the fixed bead 202 to disengage from the latch groove 208 and enter the movable groove 204. At this time, the elastic force of the return spring 905 pushes the movable ring 901 upward, causing the movable ring 901 to push the insertion tube 207 upward a certain distance, assisting in the pull-out operation of the insertion tube 207. This reduces the force required for manual insertion and removal to a certain extent, making the disassembly process easier and more convenient, and realizing the quick disassembly of components. The quick-release structure 2 improves the convenience of component installation, shortens the replacement time of the detection valve, and improves detection efficiency.

[0050] like Figures 1 to 5 As shown, the closed structure 9 includes a fixed seat 903 fixed to the bottom of the fixed sleeve 203, a movable rod 904 slidably connected inside the fixed seat 903, a movable ring 901 fixed to the top of the movable rod 904, a sealing ring 907 fixed to the top of the movable ring 901, a lower washer 908 fixed to the bottom of the movable ring 901, a baffle 902 fixed to the outside of the movable rod 904, a rubber pad 906 fixed to the top of the baffle 902, a return spring 905 installed on the top of the fixed seat 903 and connected to the baffle 902, and a stop 909 fixed to the inner wall of the fixed seat 903. The frontal cross-section of the through hole at the bottom of the stop 909 is a funnel-shaped inclined structure, and the shape of the top of the baffle 902 matches the shape of the through hole at the bottom of the stop 909.

[0051] In this embodiment of the invention, when the insertion tube 207 is inserted into the fixed sleeve 203, the insertion tube 207 pushes the moving ring 901 downward, causing the moving ring 901 to drive the baffle 902 downward via the moving rod 904. Immediately afterwards, the baffle 902 separates from the stop seat 909. At this time, the internal channel of the fixed sleeve 203 opens, allowing hydraulic oil to pass smoothly. After the insertion tube 207 is fully inserted into the fixed sleeve 203, the sealing ring 907 seals the contact area between the insertion tube 207 and the moving ring 901 to prevent hydraulic oil leakage. The lower washer 908 and the stop seat 909... The 09 contact further enhances the sealing effect. When the insertion pipe 207 is pulled out, the return spring 905 pushes the baffle 902 upward, so that the baffle 902 contacts the stop seat 909, sealing the fixed sleeve 203. At the same time, the rubber gasket 906 improves the sealing between the baffle 902 and the stop seat 909, preventing hydraulic oil leakage. Through the closed structure 9, the fixed sleeve 203 can be automatically sealed after the relief valve 7 or the cartridge valve seat 10 is pulled out, which avoids hydraulic oil leakage to a certain extent, ensures the safety and cleanliness of the working environment, and also reduces the waste of hydraulic oil.

[0052] During operation, the device is supplied with oil via an ultra-high pressure manual hydraulic pump, which delivers hydraulic oil to the input end of the first test pipeline 1 through the high-pressure pipeline 5. The inflow of hydraulic oil is controlled by the first shut-off valve 4, and the pressure value in the pipeline is monitored in real time by the pressure gauge 6 to provide data support for testing. When the pressure in the first test pipeline 1 exceeds the set value of the relief valve 7, the relief valve 7 opens to release the excess pressure. The relief valve 7 is then tested. After the second shut-off valve 12 is opened, the hydraulic oil in the first test pipeline 1 flows into the second test pipeline 11 through the pipeline. The test reaches the cartridge valve seat 10, thereby testing the hydraulic cartridge valve 8. Through the cooperation of the first test line 1 and the second test line 11, the mechanism can simultaneously test both the relief valve 7 and the hydraulic cartridge valve 8, improving testing efficiency and reducing the footprint and cost of the testing equipment to a certain extent. The instrument mounting interface 14 provides a reserved mounting hole for the testing instruments, allowing other instruments to be installed. After the test is completed, the relief valve 7 can be quickly replaced or the cartridge valve seat 10 adapted to different sizes of hydraulic cartridge valves 8 can be replaced through the quick-release structure 2.

[0053] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. Hydraulic detection mechanism of an integrated hydraulic cartridge valve comprising a first test line (1), characterized in that, Also includes: The first shut-off valve (4) is installed at the input end of the first test pipeline (1), and the input end of the first shut-off valve (4) is connected to a high-pressure pipeline (5). The pressure gauge (6) is detachably installed on one side of the top of the first test pipeline (1), and the pressure gauge (6) is provided with an instrument installation interface (14) connected to the first test pipeline (1) on the side. The second shut-off valve (12) is installed at the output end of the first test line (1), and the second test line (11) is connected to one side of the second shut-off valve (12) through a pipe. A relief valve (7) is detachably installed at the top of the first test line (1); A cartridge valve seat (10) is detachably installed at the top of the second test line (11), and a hydraulic cartridge valve (8) is inserted into the inside of the top of the cartridge valve seat (10). The quick-release structure (2) is installed between the first test line (1) and the relief valve (7), and between the cartridge valve seat (10) and the second test line (11), respectively. A closed structure (9) is set inside the fixed sleeve (203) to automatically seal the fixed sleeve (203) after the relief valve (7) and the cartridge valve seat (10) are pulled out. The quick-release structure (2) includes a fixed sleeve (203) fixed to the top of the first test pipe (1) and the second test pipe (11) respectively, a movable sleeve (201) slidably connected to the outside of the fixed sleeve (203), a plug pipe (207) inserted into the top of the fixed sleeve (203) and connected to the relief valve (7) and the cartridge valve seat (10) respectively, and a locking component disposed inside the movable sleeve (201).

2. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 1, wherein, The first test pipeline (1) is fixed with a support frame (3) on the outside, and the bottom end of the support frame (3) is fixed with a base (13).

3. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 1, wherein, The locking assembly includes a telescopic spring (206) fixed inside the movable sleeve (201) and connected to the fixed sleeve (203), a movable groove (204) opened at the top of the inside of the movable sleeve (201), a locking groove (205) opened at the bottom of the movable groove (204), a fixing bead (202) rotatably connected to the inner side wall of the fixed sleeve (203), and a buckle groove (208) opened on the outside of the insertion tube (207).

4. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 3, wherein, The movable sleeve (201) forms a telescopic structure in the vertical direction with the fixed sleeve (203) through the telescopic spring (206).

5. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 3, wherein, The fixing bead (202) is located inside the locking groove (205) and is embedded inside the buckle groove (208).

6. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 1, wherein, The closed structure (9) includes a fixed seat (903) fixed to the bottom of the fixed sleeve (203), a movable rod (904) slidably connected to the inside of the fixed seat (903), a movable ring (901) fixed to the top of the movable rod (904), a sealing ring (907) fixed to the top of the movable ring (901), a lower washer (908) fixed to the bottom of the movable ring (901), a baffle (902) fixed to the outside of the movable rod (904), a rubber pad (906) fixed to the top of the baffle (902), a return spring (905) installed at the top of the fixed seat (903) and connected to the baffle (902), and a stop (909) fixed to the inner wall of the fixed seat (903).

7. The integrated hydraulic cartridge valve hydraulic sensing mechanism of claim 6, wherein, The frontal cross-section of the bottom through hole of the stop (909) is a funnel-shaped inclined structure, and the top shape of the baffle (902) matches the shape of the bottom through hole of the stop (909).

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