Corrosion testing device for rubber O-shaped ring
By incorporating a multi-chamber and rotating structure into the rubber O-ring corrosion testing device, the problem of traditional devices being limited to single-environment testing is solved, achieving multi-environment simulation and accurate evaluation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CHUYUE SEAL MFG CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional rubber O-ring corrosion testing devices can only be used to test in a single medium environment and temperature, making it difficult to accurately assess their corrosion resistance in real complex environments.
A rubber O-ring corrosion testing device was designed. The experimental cylinder is divided into eight chambers by a partition. Each chamber can be independently set with different corrosive media. By rotating the outer shell and lifting the cover, the rubber O-ring can be switched between different chambers to simulate various corrosive environments.
It enables accurate testing of rubber O-rings under various corrosive environments, and the test results better reflect their performance in real environments, ensuring the purity and standardization of the testing environment.
Smart Images
Figure CN224189841U_ABST
Abstract
Description
A rubber O-ring corrosion testing device Technical Field
[0001] This utility model relates to the field of materials testing technology, and in particular to a rubber O-ring corrosion testing device. Background Technology
[0002] Rubber O-ring corrosion testing devices are specialized equipment that systematically test the performance of rubber O-rings under various corrosive conditions by simulating multiple real-world working environments, thereby accurately evaluating their corrosion resistance. From an industrial production perspective, rubber O-rings are widely used in sealing processes in various fields such as petrochemicals, automotive manufacturing, and aerospace. Their corrosion resistance directly affects the operational stability and safety of the entire equipment. Therefore, rubber O-ring corrosion testing devices play a crucial role in the quality inspection and research and development of rubber products.
[0003] Taking a traditional cylindrical apparatus commonly used to test the corrosion resistance of rubber O-rings as an example, the process is roughly as follows: First, the test cylinder needs to be cleaned. Open the bottom valve, inject approximately 1 mL of distilled water, and rotate the cylinder to wet the wall. Then, allow any remaining liquid to drain out. This step ensures a pure testing environment and prevents impurities from interfering with the test results. Next, carefully observe the color of the rubber gasket, weigh it, and accurately measure and record its inner and outer diameters and thickness using calipers. This step is to obtain the initial parameters of the O-ring, facilitating subsequent comparative analysis of its changes in a corrosive environment.
[0004] Next, use tweezers to hold the clean rubber gasket to be tested, hang it on the hook on the cylinder cover, and place it into the cylinder, ensuring that the bottom edge of the rubber gasket is at least 2 cm from the bottom of the cylinder. Then assemble the instrument and close the relevant valves. Next, place the test cylinder vertically on the cylinder rack, and place the cylinder rack containing the test cylinder on a platform scale. Connect the adapter with a pressure gauge that can control the filling pressure and flow rate. Connect the other end of the adapter to the sample outlet line of the sample cylinder.
[0005] Once everything is ready, close some valves, invert the test cylinder to remove air, then return it to a vertical position to discharge residual liquid and close the valves. Next, open the sample source and the relevant valves on the cylinder to allow the sample to enter the cylinder, fill it with liquefied gas, and close the bottom valve when a stable flow of liquefied gas is observed. Continue filling with liquid sample, controlling the filling volume based on changes in the balance mass.
[0006] Finally, the cylinder connected to the sample cylinder is vertically fixed on the cylinder rack and placed on a platform scale to prevent the O-ring rubber gasket from getting wet. The cylinder is then vertically immersed in a constant temperature water bath at the specified temperature. After a certain period of time, it is removed and the color of the rubber gasket is observed again. Its mass is weighed, and its inner and outer diameters and thickness are measured with vernier calipers. The data are then compared with the data before the test to determine the corrosion resistance of the O-ring rubber sealing gasket.
[0007] Traditional testing devices can only place O-rings in a single medium environment provided by the sample cylinder and a single temperature environment simulated by a constant-temperature water bath. This greatly limits the accurate assessment of the corrosion resistance of O-rings in real-world complex environments, making it difficult to meet the growing demands of product development and quality improvement. Therefore, a rubber O-ring corrosion testing device is proposed to address these issues. Summary of the Invention
[0008] To overcome the above shortcomings, this utility model provides a rubber O-ring corrosion testing device, which aims to improve the problem of the existing technology that limits the accurate evaluation of the corrosion resistance performance of O-rings in actual complex environments.
[0009] To achieve the above objectives, the present invention adopts the following technical solution: a rubber O-ring corrosion testing device, comprising a base, a shell rotatably connected to the top of the base, an experimental cylinder fixedly connected to the inner wall of the shell, both the experimental cylinder and the top of the shell being open, a lifting cover contacting the top of the shell, and an environmental simulation component being provided on the shell.
[0010] The environmental simulation component includes a toothed structure, which is fixedly connected to the outer wall of the outer shell. A partition is fixedly connected to the inner wall of the experimental cylinder. An installation groove is provided on the top of the base. A motor is fixedly installed on the inner wall of the installation groove. A drive gear is fixedly connected to the output shaft of the motor. The outer wall of the drive gear meshes with the toothed structure. Arc-shaped ramps are fixedly connected to the inner side of the outer shell and the outer side of the experimental cylinder. A fixing rod is fixedly connected to the center of the top of the experimental cylinder. The middle part of the lifting cover is movably sleeved on the surface of the fixing rod. A support rod is fixedly connected to the bottom of the lifting cover. A ball bearing is fixedly connected to the bottom end of the support rod. A material storage component is provided on the top of the lifting cover.
[0011] As a further description of the above technical solution: the storage assembly includes a sample chamber with an opening at the top, a cover hinged to the top edge of the sample chamber, a hook fixedly connected to the bottom of the cover, and a through hole at the connection between the sample chamber and the lifting cover.
[0012] As a further description of the above technical solution: a limiting ring is fixedly sleeved on the surface of the fixing rod, a spring is sleeved on the surface of the fixing rod, the top end of the spring is fixedly connected to the bottom of the limiting ring, and the bottom end of the spring is fixedly connected to the top of the lifting cover.
[0013] As a further description of the above technical solution: the surface of the fixed rod is provided with a sliding groove, and a slider is fixedly connected to the inner side of the middle part of the lifting cover. The lifting cover is slidably connected to the inner wall of the sliding groove through the slider.
[0014] As a further description of the above technical solution: a rubber ring is fixedly connected to the bottom of the chamber cover, and the bottom of the chamber cover is in sealed contact with the top surface of the sample chamber through the rubber ring.
[0015] As a further description of the above technical solution: the surface of the ball is slidably connected to the inner side of the outer shell and the outer side of the experimental cylinder, and the ball is configured to cooperate with the arc-shaped ramp.
[0016] As a further description of the above technical solution: the arc-shaped slope blocks are symmetrically arranged at equal intervals, and the adjacent sides of the arc-shaped slope blocks are arranged as inclined planes.
[0017] As a further description of the above technical solution: the inner wall of the experimental cylinder is divided into eight chambers by partitions, the eight chambers are of the same size, the sample chamber is cylindrical, and the number of sample chambers is the same as the number of chambers.
[0018] This utility model has the following beneficial effects:
[0019] 1. In this utility model, the environmental simulation component is set up to divide the experimental cylinder into eight chambers using partitions. Each chamber can be independently set with different corrosive media. With the rotation of the outer shell, the rubber O-rings enter each chamber in sequence, simulating a variety of different corrosive environments, ensuring that the test results can better reflect the performance of the product in the real environment.
[0020] 2. In this utility model, the rubber O-ring is fixed by the storage component and hook to prevent displacement or falling off during the test. The sealing design of the chamber cover effectively avoids contamination of the sample by external impurities, ensuring the purity of the test environment. The sample chamber can accurately send the rubber O-ring into the corresponding chamber in a predetermined order, ensuring the standardization and orderliness of the test process. Attached Figure Description
[0021] Figure 1 is a front view of a rubber O-ring corrosion testing device proposed in this utility model;
[0022] Figure 2 is a schematic diagram of the structure of the lifting cover of the rubber O-ring corrosion testing device proposed in this utility model after it is raised.
[0023] Figure 3 is a structural schematic diagram of the shell, experimental cylinder, arc-shaped ramp, and partition of the rubber O-ring corrosion testing device proposed in this utility model.
[0024] Figure 4 is a bottom view of the lifting cover of a rubber O-ring corrosion testing device proposed in this utility model;
[0025] Figure 5 is a schematic diagram of the structure of the rubber O-ring corrosion testing device after the cover is opened.
[0026] Legend:
[0027] 1. Base; 2. Motor; 3. Drive gear; 4. Outer shell; 5. Sample chamber; 6. Chamber cover; 7. Fixing rod; 8. Limiting ring; 9. Lifting cover; 10. Support rod; 11. Ball bearing; 12. Spring; 13. Experimental cylinder; 14. Partition; 15. Arc-shaped ramp; 16. Through hole; 17. Sealing gasket; 18. Hook. Detailed Implementation
[0028] 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.
[0029] Referring to Figures 1 and 2, one embodiment of this utility model provides a rubber O-ring corrosion testing device, including a base 1. A housing 4 is rotatably connected to the top of the base 1, allowing the housing 4 to rotate around the base 1, thereby enabling switching between different testing environments and providing a motion basis for simulating varying environments. An experimental cylinder 13 is fixedly connected to the inner wall of the housing 4, providing the main testing space for the corrosion testing of the rubber O-ring. Simultaneously, the fixed connection with the housing 4 ensures that the experimental cylinder 13 moves synchronously when the housing 4 rotates. Both the experimental cylinder 13 and the housing 4 have openings at the top. A lifting cover 9 contacts the top of the housing 4, covering the top opening to prevent external impurities from entering the testing space and affecting the test results. During device operation, the lifting cover 9 also participates in switching between testing environments. An environmental simulation component is provided on the housing 4, which can simulate various different corrosion environments that the rubber O-ring may encounter in actual use, making the test results closer to the actual application scenario.
[0030] Referring to Figures 1-3, the environmental simulation component includes a toothed structure fixedly connected to the outer wall of the outer shell 4. A partition 14 is fixedly connected to the inner wall of the experimental cylinder 13, dividing the inner wall of the cylinder 13 into eight chambers. Each chamber can be equipped with different corrosive media, providing physical space for simulating various corrosive environments. This allows the rubber O-rings to be tested sequentially in different chambers. A mounting slot is provided on the top of the base 1, providing a dedicated mounting position for the motor 2 and ensuring the stability of the motor 2 installation. The motor 2 is fixedly mounted on the inner wall of the mounting slot. The output of the motor 2... A drive gear 3 is fixedly connected to the shaft. The outer wall of the drive gear 3 meshes with the teeth. The drive gear 3 transmits the rotational motion output by the motor 2 to the teeth, thereby driving the outer shell 4 to rotate. Arc-shaped ramps 15 are fixedly connected to the inner side of the outer shell 4 and the outer side of the experimental cylinder 13. The arc-shaped ramps 15 are symmetrically arranged at equal intervals. Through the inclined structure, the lifting cover 9 can be lifted and lowered, thereby controlling the rubber O-ring to enter different chambers for testing. The adjacent sides of the arc-shaped ramps 15 are inclined. This inclined design facilitates the smooth sliding of the ball bearing 11 on it, thereby realizing the smooth lifting and lowering of the lifting cover 9.
[0031] Referring to Figures 1, 2, and 4, a fixed rod 7 is fixedly connected to the center of the top of the experimental cylinder 13. The fixed rod 7 provides center positioning and support for the lifting cover 9. The middle part of the lifting cover 9 is movably fitted onto the surface of the fixed rod 7. A sliding groove is formed on the surface of the fixed rod 7. A slider is fixedly connected to the inner side of the middle part of the lifting cover 9. The lifting cover 9 is slidably connected to the inner wall of the sliding groove through the slider. This connection method ensures that the lifting cover 9 can rise and fall smoothly along the fixed rod 7, while also limiting the movement trajectory of the lifting cover 9, preventing the lifting cover 9 from deviating. A limiting ring 8 is fixedly sleeved on the surface of the fixed rod 7. The limiting ring 8 is used to limit the upward movement of the spring 12 and the lifting cover 9, prevent the lifting cover 9 from detaching from the fixed rod 7, and ensure the safety and stability of the device. The surface of the fixed rod 7 is sleeved with a spring 12. The top end of the spring 12 is fixedly connected to the bottom of the limiting ring 8, and the bottom end of the spring 12 is fixedly connected to the top of the lifting cover 9. The spring 12 provides elastic force to the lifting cover 9. When the ball 11 leaves the inclined surface of the arc-shaped ramp 15, it pushes the lifting cover 9 downward so that it covers the top opening of the outer shell 4.
[0032] Referring to Figure 4, a support rod 10 is fixedly connected to the bottom of the lifting cover 9, and a ball bearing 11 is fixedly connected to the bottom end of the support rod 10. The support rod 10 connects the lifting cover 9 and the ball bearing 11, transmitting the movement and force of the lifting cover 9 and ensuring that the ball bearing 11 can move with the lifting cover 9. The surface of the ball bearing 11 is slidably connected to the inner side of the outer shell 4 and the outer side of the experimental cylinder 13, respectively. The ball bearing 11 reduces the friction between the lifting cover 9 and the outer shell 4 and the experimental cylinder 13, making the movement of the lifting cover 9 smoother. The lifting cover 9 is raised and lowered by cooperating with the arc-shaped ramp 15. The ball bearing 11 is set to cooperate with the arc-shaped ramp 15. When the ball bearing 11 slides along the inclined surface of the arc-shaped ramp 15, it drives the lifting cover 9 to rise. When the ball bearing 11 slides down the arc-shaped ramp 15, the lifting cover 9 falls under the action of the spring 12. The top of the lifting cover 9 is provided with a material storage component, which is used to store rubber O-rings. During the operation of the device, the rubber O-rings are sent into different chambers in sequence for testing.
[0033] Referring to Figure 5, the storage assembly includes a sample chamber 5, which provides space for storing rubber O-rings. Each sample chamber 5 corresponds to a cavity, facilitating accurate placement of the rubber O-rings into the corresponding cavity. The top of the sample chamber 5 has an opening for easy insertion of the rubber O-rings. A cover 6 is hinged to the top edge of the sample chamber 5 to seal it and prevent the rubber O-rings from being affected by the external environment before testing. A hook 18 is fixedly connected to the bottom of the cover 6 to suspend the rubber O-rings, keeping them stable in the sample chamber 5 for subsequent entry into the cavity for testing. A through hole 16 is provided at the connection between the sample chamber 5 and the lifting cover 9. To ensure that the rubber O-rings in the sample chamber 5 can smoothly enter the chamber during the lifting and lowering process of the lifting cover 9, without affecting the normal movement of the lifting cover 9, a sealing gasket 17 is fixedly connected to the bottom of the chamber cover 6. The bottom of the chamber cover 6 is in sealed contact with the top surface of the sample chamber 5 through the sealing gasket 17. The sealing gasket 17 is made of rubber, which not only enhances the sealing between the chamber cover 6 and the sample chamber 5, but also prevents external impurities from entering the sample chamber 5 and affecting the test results of the rubber O-rings. The eight chambers are of the same size, and the sample chamber 5 is cylindrical. The number of sample chambers 5 is the same as the number of chambers. This design allows each chamber to correspond to one sample chamber 5, realizing the orderly and accurate testing of rubber O-rings.
[0034] Working principle: Open the chamber cover 6, hang the inner side of the rubber O-ring on the hook 18, so that the surface of the rubber O-ring contacts the inner wall of the sample chamber 5, and then close the chamber cover 6. The chamber cover 6 is sealed by the sealing gasket 17. Then start the motor 2, so that the output shaft of the motor 2 drives the drive gear 3 to rotate. Through the meshing of the drive gear 3 with the teeth, the drive gear 3 drives the outer shell 4 to rotate on the top of the base 1. The bottom of the lifting cover 9 slides between the outer shell 4 and the experimental cylinder 13 through the support rod 10 and the bottom ball bearing 11. When the ball bearing 11 slides to the top along the inclined surface of the arc, At that time, the lifting cover 9 slides upward in the groove opened on the surface of the fixed rod 7 via the inner slider, so that the lifting cover 9 squeezes the spring 12. When the ball 11 slides from above the arc-shaped ramp 15 to the inner cavity of the partition 14, it drives the lifting cover 9 to move downward under the longitudinal elastic potential energy of the spring 12 until the bottom of the lifting cover 9 fits against the top opening of the outer shell 4. Since different corrosive media are set in each cavity, the rubber O-rings are tested between these cavities in sequence, so that the O-rings are alternately exposed between different areas, simulating the variable environment that they may encounter in actual use.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A rubber O-ring corrosion testing device, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a shell (4), and an experimental cylinder (13) is fixedly connected to the inner wall of the shell (4). Both the experimental cylinder (13) and the shell (4) have openings at the top. A lifting cover (9) is in contact with the top of the shell (4). An environmental simulation component is provided on the shell (4). The environmental simulation component includes teeth, which are fixedly connected to the outer wall of the shell (4). A partition (14) is fixedly connected to the inner wall of the experimental cylinder (13). The top of the base (1) has an installation groove, and a motor (2) is fixedly installed on the inner wall of the installation groove. The output shaft of the motor (2) is fixedly connected to a drive gear (3), the outer wall of the drive gear (3) meshes with the teeth, the inner side of the outer shell (4) and the outer side of the experimental cylinder (13) are both fixedly connected to arc-shaped ramps (15), the top center of the experimental cylinder (13) is fixedly connected to a fixing rod (7), the middle part of the lifting cover (9) is movably sleeved on the surface of the fixing rod (7), the bottom of the lifting cover (9) is fixedly connected to a support rod (10), the bottom end of the support rod (10) is fixedly connected to a ball bearing (11), and the top of the lifting cover (9) is provided with a material storage assembly.
2. The rubber O-ring corrosion testing device according to claim 1, characterized in that: The storage assembly includes a sample chamber (5), the sample chamber (5) has an opening at the top, a cover (6) is hinged to the top edge of the sample chamber (5), a hook (18) is fixedly connected to the bottom of the cover (6), and a through hole (16) is provided at the connection between the sample chamber (5) and the lifting cover (9).
3. The rubber O-ring corrosion testing device according to claim 1, characterized in that: A limiting ring (8) is fixedly sleeved on the surface of the fixing rod (7), and a spring (12) is sleeved on the surface of the fixing rod (7). The top end of the spring (12) is fixedly connected to the bottom of the limiting ring (8), and the bottom end of the spring (12) is fixedly connected to the top of the lifting cover (9).
4. The rubber O-ring corrosion testing device according to claim 1, characterized in that: The surface of the fixed rod (7) is provided with a sliding groove, and a slider is fixedly connected to the inner side of the middle part of the lifting cover (9). The lifting cover (9) is slidably connected to the inner wall of the sliding groove through the slider.
5. The rubber O-ring corrosion testing device according to claim 2, characterized in that: A rubber ring is fixedly connected to the bottom of the chamber cover (6), and the bottom of the chamber cover (6) is in sealed contact with the top surface of the sample chamber (5) through the rubber ring.
6. The rubber O-ring corrosion testing device according to claim 1, characterized in that: The surface of the ball (11) is slidably connected to the inner side of the outer shell (4) and the outer side of the experimental cylinder (13), respectively, and the ball (11) is configured to cooperate with the arc-shaped ramp (15).
7. The rubber O-ring corrosion testing device according to claim 1, characterized in that: The arc-shaped slope blocks (15) are symmetrically arranged at equal intervals, and the adjacent sides of the arc-shaped slope blocks (15) are arranged as inclined surfaces.
8. The rubber O-ring corrosion testing device according to claim 2, characterized in that: The inner wall of the experimental cylinder (13) is divided into eight chambers by partitions (14). The eight chambers are of the same size. The sample chamber (5) is cylindrical. The number of sample chambers (5) is the same as the number of chambers.