Sealing element detection device
By using a gas leak detection method and observing bubbles in a transparent water tank, the problems of misjudgment due to moisture in sponges and damage from water media in traditional seal detection devices are solved, achieving high-precision and widely applicable seal detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HANCAI SEALING ELEMENT
- Filing Date
- 2025-07-23
- Publication Date
- 2026-05-15
AI Technical Summary
In traditional sealing device detection, sponges used as leak indicators are prone to moisture damage, leading to misjudgments. Furthermore, water may damage water-sensitive seals, resulting in insufficient detection accuracy and applicability.
The gas leak detection method is adopted, which uses a transparent water tank to observe bubbles. The leaked gas is introduced into the transparent water tank through an L-shaped tube. Combined with an electric push rod and a pressurizing piston, different pressure environments are simulated to ensure detection accuracy and applicability.
It improves detection accuracy, avoids misjudgments caused by environmental humidity, is suitable for seals made of various materials, and does not damage water-sensitive seals.
Smart Images
Figure CN224247235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a sealing component testing device, belonging to the field of sealing component testing technology. Background Technology
[0002] In the quality control of seals, accurate detection of their sealing performance and deformation is crucial. The quality of seals directly affects the overall performance and reliability of the product; therefore, rigorous testing is key to ensuring product qualification. Traditional seal testing equipment typically faces a series of challenges that affect the accuracy and reliability of the test results.
[0003] Chinese Patent CN216081913U discloses a sealing component testing device, including a testing base, a support frame, a hydraulic rod, a sealing component mounting seat, and a sealing component. The sealing component is fitted onto the sealing component mounting seat. The top of the sealing component mounting seat is connected to the hydraulic rod, and the base of the hydraulic rod is mounted on the support frame. The airtightness testing groove has an inverted convex structure. A leakage indicator is provided at the bottom of the airtightness testing groove. The sealing component mounting seat is located above the airtightness testing groove. A water tank is provided on one side of the testing base. The water tank is connected to a pumping pump through a pipe. A water supply pipe is connected to the pumping pump. This invention, by setting a leakage indicator at the bottom of the airtightness testing groove and placing an injection pipe in the cavity formed between the sealing component mounting seat and the airtightness testing groove, allows water to flow into the space formed between the sealing component mounting seat and the bottom of the airtightness testing groove when a leak occurs, thereby wetting the leakage indicator in the airtightness testing groove.
[0004] The aforementioned patent has some shortcomings: it uses a sponge as a leak indicator and relies on water penetration to determine whether a seal is leaking. However, this solution has obvious defects: the area around the sponge must be kept absolutely dry during the detection process. If the sponge is damp before the detection or if water accidentally contaminates the sponge during the detection, it will directly lead to misjudgment and seriously affect the detection accuracy. At the same time, the use of water as a medium may also damage some water-sensitive seals, making it less applicable. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a sealing component testing device to solve the issues raised in the background section.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a sealing component detection device, including an inspection table, a frame vertically installed on the top of the inspection table, and a lifting component provided on the frame, an annular lifting body provided above the inspection table, and a pressurizing component provided on the top of the annular lifting body, a circular cylinder installed on the top of the inspection table, and a support ring installed inside the circular cylinder, and a leakage detection component provided on the circular cylinder.
[0007] The leak detection assembly includes an L-shaped tube and a transparent water tank. The transparent water tank is installed on the top of the inspection table. One end of the L-shaped tube is inserted into the transparent water tank, and the other end of the L-shaped tube is installed through the circular cylinder. The through end of the L-shaped tube is located between the pressing ring and the placement groove. The L-shaped tube is used to guide the gas leaking between the placement groove and the pressing ring into the transparent water tank.
[0008] Preferably, the top of the support ring is provided with a placement groove, and the sealing element body is placed in the placement groove. The bottom of the annular lifting body is equipped with a pressing ring, which is used to squeeze and seal the top of the sealing element body.
[0009] Preferably, a rubber piston ring is fitted around the outer side of the annular lifting body, and the rubber piston ring is used to seal between the annular lifting body and the circular cylinder.
[0010] Preferably, the lifting assembly includes a first electric push rod, which is vertically installed through the top of the frame, and the output end of the first electric push rod is installed on the top of the lifting plate. Connecting plates are vertically symmetrically installed at the bottom of the lifting plate, and the bottom of each connecting plate is installed on the top of the annular lifting body.
[0011] Preferably, the pressurizing assembly includes a circular tube, a second electric push rod, and a pressurizing piston. The circular tube is vertically connected to the top of the annular lifting body, and the pressurizing piston is slidably installed inside the circular tube. The second electric push rod is vertically installed through the top of the lifting plate, and the output end of the second electric push rod is installed on the top of the pressurizing piston.
[0012] Preferably, guide columns are vertically and symmetrically installed on the top of the lifting plate, and the top of each guide column slides through the frame.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] High detection accuracy: It adopts the gas leak detection method, which can intuitively judge the leak by the generation of bubbles in the transparent water pool. It does not rely on the dryness of the sponge and avoids misjudgment caused by environmental humidity, making the detection results more reliable.
[0015] Wide applicability: The detection medium is gas, which will not damage water-sensitive seals and can be used for the detection of seals made of various materials. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0019] Figure 3 This is a cross-sectional structural diagram of the present invention in its working state.
[0020] In the diagram: 1. Inspection table; 2. Frame; 3. Lifting plate; 4. Circular cylinder; 5. Annular lifting body; 6. Circular tube; 7. Connecting plate; 8. First electric push rod; 9. Second electric push rod; 10. Transparent water tank; 11. L-shaped tube; 12. Support ring; 13. Placement groove; 14. Pressing ring; 15. Rubber piston ring; 16. Pressurizing piston; 17. Guide column; 18. Sealing body. 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] Please see Figure 1-3 This utility model provides a technical solution: a sealing component detection device, including an inspection table 1, a frame 2 vertically installed on the top of the inspection table 1, and a lifting component provided on the frame 2, an annular lifting body 5 provided above the inspection table 1, and a pressurizing component provided on the top of the annular lifting body 5, a circular cylinder 4 installed on the top of the inspection table 1, and a support ring 12 installed inside the circular cylinder 4, and a leakage detection component provided on the circular cylinder 4.
[0023] The leak detection assembly includes an L-shaped tube 11 and a transparent water tank 10. The transparent water tank 10 is installed on the top of the inspection table 1. One end of the L-shaped tube 11 is inserted into the transparent water tank 10, and the other end of the L-shaped tube 11 is installed through the circular cylinder 4. The through end of the L-shaped tube 11 is located between the pressing ring 14 and the placement groove 13. The L-shaped tube 11 is used to guide the gas leaking between the placement groove 13 and the pressing ring 14 into the transparent water tank 10.
[0024] Specifically, when there is a sealing defect in the sealing body 18, the leaked gas will precisely enter the gap between the pressing ring 14 and the placement groove 13. Since the through end of the L-shaped tube 11 is exactly at the position of this gap, the gas will flow along the pipe structure of the L-shaped tube 11 and finally be discharged from the end inserted into the transparent water tank 10. At this time, the gas will form clearly visible bubbles in the water. By observing whether bubbles are generated in the transparent water tank 10, the operator can quickly determine whether there is a gas leakage problem in the sealing component. The transparent water tank 10 is made of a high light transmittance material, which can ensure that the operator can observe the bubble situation from multiple angles in real time. Even tiny bubbles generated by minor leaks can be accurately captured.
[0025] Furthermore, the top of the support ring 12 is provided with a placement groove 13, and the sealing body 18 is placed in the placement groove 13. The bottom of the annular lifting body 5 is equipped with a pressing ring 14, and the pressing ring 14 is used to squeeze and seal the top of the sealing body 18.
[0026] Specifically, the shape and size of the placement groove 13 are strictly matched with the shape of the seal body 18 to be tested, so that it can be stably fitted in the groove, avoiding the impact of the test accuracy due to the displacement of the seal during the test. The bottom end face of the pressing ring 14 is precision polished to ensure that its contact area with the top of the seal body 18 is uniform. When the annular lifting body 5 descends, the pressing ring 14 will vertically squeeze the seal body 18 with a preset pressure, simulating the compression and sealing state of the seal in actual work, ensuring that the test environment is consistent with the actual application scenario.
[0027] Furthermore, a rubber piston ring 15 is fitted around the outer side of the annular lifting body 5, and the rubber piston ring 15 is used to seal between the annular lifting body 5 and the circular cylinder 4.
[0028] Specifically, the rubber piston ring 15 is made of highly elastic and aging-resistant rubber material. Its inner side is tightly fitted with the annular lifting body 5, while its outer side forms an interference fit with the inner wall of the circular cylinder 4. When the annular lifting body 5 moves up and down inside the circular cylinder 4, the rubber piston ring 15 will always maintain tight contact with the inner wall of the circular cylinder 4 due to its own elasticity, thereby completely blocking the gap between the annular lifting body 5 and the circular cylinder 4, preventing the gas generated by the pressurizing component from leaking out of the gap, ensuring that all leaked gas comes from the sealing defects of the sealing body 18, and ensuring the accuracy of the test results.
[0029] Furthermore, the lifting assembly includes a first electric push rod 8, which is vertically installed through the top of the frame 2, and the output end of the first electric push rod 8 is installed on the top of the lifting plate 3. Connecting plates 7 are vertically symmetrically installed at the bottom of the lifting plate 3, and the bottom of each connecting plate 7 is installed on the top of the annular lifting body 5.
[0030] Specifically, when the first electric push rod 8 is activated, the output end extends and retracts, causing the lifting plate 3 to move vertically. Then, the power is transmitted to the annular lifting body 5 through the symmetrically distributed connecting plates 7, so as to achieve precise lifting and lowering of the annular lifting body 5. During the lifting and lowering process, the pressing force of the pressing ring 14 on the sealing body 18 can be adjusted by controlling the extension and retraction of the first electric push rod 8, so as to meet the testing requirements of different sealing components for the pressing force.
[0031] Furthermore, the pressurizing assembly includes a circular tube 6, a second electric push rod 9, and a pressurizing piston 16. The circular tube 6 is vertically connected to the top of the annular lifting body 5, and the pressurizing piston 16 is slidably installed inside the circular tube 6. The second electric push rod 9 is vertically installed through the top of the lifting plate 3, and the output end of the second electric push rod 9 is installed on the top of the pressurizing piston 16.
[0032] Specifically, the circular tube 6 is connected to the internal space of the annular lifting body 5. The outer wall of the pressurizing piston 16 is tightly fitted with the inner wall of the circular tube 6 to form a good sealing structure. When the second electric push rod 9 is started, its output end pushes the pressurizing piston 16 to slide downward in the circular tube 6, thereby compressing the sealed space between the annular lifting body 5 and the circular cylinder 4, causing the gas pressure in the space to gradually increase. The pressure can be precisely adjusted by controlling the advance distance of the second electric push rod 9, which can simulate the sealing performance of the seal under different working pressures and is suitable for testing scenarios under various working conditions such as high pressure and low pressure.
[0033] Furthermore, guide columns 17 are vertically symmetrically installed on the top of the lifting plate 3, and the top of each guide column 17 slides through the frame 2;
[0034] Specifically, the guide post 17 is made of high-strength metal material, and its outer wall is smoothed. It forms a sliding fit with the through hole on the frame 2. When the lifting plate 3 is lifted and lowered by the first electric push rod 8, the guide post 17 will slide synchronously along the through hole of the frame 2, which plays a strict guiding and limiting role on the movement trajectory of the lifting plate 3, preventing the lifting plate 3 from tilting or deviating due to uneven force. This design ensures that the pressing ring 14 can always be vertically aligned with the sealing body 18, ensuring that the squeezing force is evenly distributed, and further improving the stability and reliability of the detection.
[0035] The workflow of this embodiment is as follows: The seal body 18 to be tested is smoothly placed into the placement groove 13 at the top of the support ring 12, ensuring that the seal is in close contact with the inner wall of the placement groove 13. The first electric push rod 8 is activated, and its output end extends to drive the lifting plate 3, connecting plate 7 and annular lifting body 5 to descend synchronously until the pressing ring 14 is tightly pressed against the top of the seal body 18, completing the initial fixing and sealing of the seal. The second electric push rod 9 is activated to push the pressure piston 16 to move downward in the circular tube 6, pressurizing the sealed space between the annular lifting body 5 and the circular cylinder 4, so that the seal is under the preset pressure ring. In the environment, if the sealing component body 18 has a sealing defect, the leaked gas will enter the L-shaped pipe 11 through the gap between the pressing ring 14 and the placement groove 13, and eventually be discharged into the transparent water tank 10, generating obvious bubbles. The operator can judge whether the sealing component is qualified by observing whether bubbles are generated in the transparent water tank 10. After the test is completed, the second electric push rod 9 is turned off, which drives the pressure piston 16 to reset and release the pressure in the sealed space. Then the first electric push rod 8 is started in reverse, which drives the annular lifting body 5 and the pressing ring 14 to rise and remove the sealing component body 18 from the placement groove 13, completing one test process.
[0036] 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, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sealing component testing device, characterized in that, The system includes an inspection table (1), a frame (2) is vertically mounted on the top of the inspection table (1), and a lifting component is provided on the frame (2). An annular lifting body (5) is provided above the inspection table (1), and a pressurizing component is provided on the top of the annular lifting body (5). A circular cylinder (4) is installed on the top of the inspection table (1), and a support ring (12) is installed inside the circular cylinder (4). A leak detection component is provided on the circular cylinder (4). The leak detection assembly includes an L-shaped tube (11) and a transparent water tank (10). The transparent water tank (10) is installed on the top of the inspection table (1). One end of the L-shaped tube (11) is inserted into the transparent water tank (10), and the other end of the L-shaped tube (11) is installed through the circular cylinder (4). The through end of the L-shaped tube (11) is located in the middle of the pressing ring (14) and the placement groove (13). The L-shaped tube (11) is used to guide the gas leaked between the placement groove (13) and the pressing ring (14) into the transparent water tank (10).
2. The sealing component testing device according to claim 1, characterized in that, The support ring (12) has a placement groove (13) at the top, and a sealing body (18) is placed in the placement groove (13). The bottom of the annular lifting body (5) is equipped with a pressing ring (14), and the pressing ring (14) is used to squeeze and seal the top of the sealing body (18).
3. The sealing component testing device according to claim 1, characterized in that, A rubber piston ring (15) is fitted around the outer side of the annular lifting body (5), and the rubber piston ring (15) is used to seal between the annular lifting body (5) and the circular cylinder (4).
4. The sealing component testing device according to claim 1, characterized in that, The lifting assembly includes a first electric push rod (8), which is vertically installed through the top of the frame (2), and the output end of the first electric push rod (8) is installed on the top of the lifting plate (3). A connecting plate (7) is vertically symmetrically installed at the bottom of the lifting plate (3), and the bottom of the connecting plate (7) is installed on the top of the annular lifting body (5).
5. A sealing component testing device according to claim 4, characterized in that, The pressurizing assembly includes a circular tube (6), a second electric push rod (9), and a pressurizing piston (16). The circular tube (6) is vertically connected to the top of the annular lifting body (5), and the pressurizing piston (16) is slidably installed inside the circular tube (6). The second electric push rod (9) is vertically installed through the top of the lifting plate (3), and the output end of the second electric push rod (9) is installed on the top of the pressurizing piston (16).
6. The sealing component testing device according to claim 4, characterized in that, The top of the lifting plate (3) is vertically symmetrically equipped with guide columns (17), and the top of the guide columns (17) slides through the frame (2).