Dynamic sealing structure of high-pressure piston
By using a combination of fixed ring, cavity, connecting assembly, spring, sliding ring and sleeve in the high-pressure piston dynamic sealing structure, the problem of high-pressure piston being unable to be sealed is solved, and effective sealing and safety improvement of the internal medium of the piston is achieved.
Patent Information
- Application Number
- CN202421854929.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The existing high-pressure piston cannot be effectively sealed during use, resulting in medium leakage and affecting the safety of the device.
A high-pressure piston moving sealing structure is adopted, including a fixing ring, a cavity, a connecting assembly, a spring, a sliding ring and a sleeve. The sleeve rotates outside the connecting pipe through the sleeve to compress the spring to seal the inside of the piston.
It realizes effective sealing of the internal media of the piston, prevents leakage, and improves the safety of the device's use.
Smart Images
Figure CN222894317U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, in particular to a high-pressure piston dynamic sealing structure. Background Art
[0002] In internal combustion engines, the seal between the piston and the cylinder is crucial to ensure that the high-pressure gas works effectively in the combustion chamber while preventing lubricating oil from entering the combustion chamber. In various types of compressors (such as air compressors, refrigerant compressors, etc.), the piston dynamic seal structure is used to keep the high-pressure gas in the compression chamber for effective gas compression. In hydraulic systems, the piston dynamic seal structure is used to ensure the sealing performance of the hydraulic cylinder to prevent hydraulic oil leakage and maintain the working efficiency of the system.
[0003] However, some existing high-pressure pistons cannot be sealed when in use, which may cause the medium to leak from between the piston and the cylinder during the use of the device, thereby affecting the safety of the device. Therefore, a high-pressure piston dynamic sealing structure is proposed to solve the above problem. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides a high-pressure piston dynamic sealing structure, which aims to improve the problem in the prior art that the high-pressure piston cannot be sealed when the high-pressure piston is used.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A high-pressure piston dynamic seal structure, comprising a fixing ring 1, a cavity is provided inside the fixing ring 1, a connecting assembly is fixedly connected inside the cavity, a fixing ring 2 is fixedly connected outside the connecting assembly, a spring is sleeved outside the connecting assembly, a sliding ring is slidably connected to the right side of the outside of the connecting assembly, a threaded groove is provided on the right side of the outside of the connecting assembly, a sleeve is threadedly connected to the right side of the connecting assembly, and a sealing ring is fixedly connected to the right side of the inside of the sleeve;
[0007] As a further description of the above technical solution:
[0008] The connecting assembly comprises a connecting pipe, the outside of the connecting pipe is fixedly connected to the inside of the cavity, the middle of the second fixing ring is fixedly connected to the outside of the connecting pipe, the middle of the sliding ring is slidably connected to the outside of the connecting pipe, the spring is sleeved on the outside of the connecting pipe, and the left side of the inside of the sleeve is threadedly connected to the right side of the outside of the connecting pipe;
[0009] As a further description of the above technical solution:
[0010] One end of the spring is fixedly connected to the right side of the second fixing ring, and the other end of the spring is fixedly connected to the left side of the sliding ring;
[0011] As a further description of the above technical solution:
[0012] The outside of the sliding ring contacts the inside of the cavity, and the right side of the sliding ring contacts the left side of the sleeve;
[0013] As a further description of the above technical solution:
[0014] The left side of the second fixing ring contacts the left inner wall of the first fixing ring.
[0015] The utility model has the following beneficial effects:
[0016] 1. In the utility model, by rotating the sleeve outside the connecting pipe, the sleeve will pass through the compression spring, and under the action of the spring return, the sliding ring will seal the inside of the piston, thereby preventing the medium inside the piston from leaking during the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional schematic diagram of a high-pressure piston dynamic seal structure proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the structure inside the cavity of a high-pressure piston dynamic seal structure proposed by the utility model;
[0019] Figure 3 The present invention is a schematic structural diagram of a thread groove of a high-pressure piston dynamic seal structure.
[0020] Legend:
[0021] 1. Fixed ring 1; 2. Cavity; 3. Connecting pipe; 4. Fixed ring 2; 5. Spring; 6. Sliding ring; 7. Thread groove; 8. Sleeve; 9. Sealing ring. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Reference Figure 1 - Figure 3, an embodiment provided by the utility model: a high-pressure piston dynamic sealing structure, comprising a fixing ring 1, a cavity 2 is provided inside the fixing ring 1, a connecting component is fixedly connected inside the cavity 2, so that the cavity 2 can provide support for the connecting component, a fixing ring 2 4 is fixedly connected outside the connecting component, and then the connecting component can provide support for the fixing ring 2 4, the left side of the fixing ring 2 4 contacts the left inner wall of the fixing ring 1, and then the fixing ring 1 can further provide support for the fixing ring 2 4, a spring 5 is sleeved outside the connecting component, and a sliding ring 6 is slidably connected to the right side of the outside of the connecting component, so that the connecting component can make the sliding ring 6 slide more stably, a thread groove 7 is provided on the right side of the outside of the connecting component, and a sleeve 8 is threadedly connected to the right side of the connecting component, and then the sleeve 8 is threadedly connected to the connecting component through the thread groove 7, and the connecting component includes a connecting pipe 3, the outside of the connecting pipe 3 is fixedly connected to the inside of the cavity 2, the middle part of the fixing ring 2 4 is fixedly connected to the outside of the connecting pipe 3, and the middle part of the sliding ring 6 is slidably connected to the outside of the connecting pipe 3.
[0024] One end of the spring 5 is fixedly connected to the right side of the fixed ring 24, and the other end of the spring 5 is fixedly connected to the left side of the sliding ring 6, so that the sliding ring 6 will compress the spring 5 when it moves, the outside of the sliding ring 6 is in contact with the inside of the cavity 2, and the right side of the sliding ring 6 is in contact with the left side of the sleeve 8, so that the sleeve 8 will press the sliding ring 6 when it moves, and the spring 5 is sleeved on the outside of the connecting pipe 3, and the inner left side of the sleeve 8 is threadedly connected to the outer right side of the connecting pipe 3, and the inner right side of the sleeve 8 is fixedly connected with a sealing ring 9, so that the sealing ring 9 can seal the inside of the sleeve 8.
[0025] Working principle: When it is necessary to seal the inside of the device, the inner left side of the sleeve 8 can be sleeved on the outside of the connecting pipe 3. At this time, the sleeve 8 is rotated to make the sleeve 8 move outside the connecting pipe 3 through the threaded groove 7, so that the sleeve 8 will press the sliding ring 6 when moving, and then the sliding ring 6 will compress the spring 5, and then under the action of the spring 5 returning, the right side of the sliding ring 6 and the left side of the sleeve 8 will fit more closely, so as to achieve the sealing of the inside of the device and prevent the leakage of the medium inside the device during the use of the device. The degree of sealing can be achieved through the distance that the sleeve 8 rotates outside the connecting pipe 3, and the inside of the sleeve 8 can be sealed through the sealing ring 9.
[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-pressure piston dynamic seal structure, comprising a fixing ring (1), characterized in that: The interior of the fixing ring 1 (1) is provided with a cavity (2), the interior of the cavity (2) is fixedly connected with a connecting component, the exterior of the connecting component is fixedly connected with a fixing ring 2 (4), the exterior of the connecting component is sleeved with a spring (5), the exterior right side of the connecting component is slidably connected with a sliding ring (6), the exterior right side of the connecting component is provided with a threaded groove (7), the right side of the connecting component is threadedly connected with a sleeve (8), and the interior right side of the sleeve (8) is fixedly connected with a sealing ring (9).
2. A high pressure piston dynamic seal structure according to claim 1, characterized in that: The connection assembly comprises a connection pipe (3), the outside of the connection pipe (3) is fixedly connected to the inside of the cavity (2), the middle part of the second fixing ring (4) is fixedly connected to the outside of the connection pipe (3), the middle part of the sliding ring (6) is slidably connected to the outside of the connection pipe (3), the spring (5) is sleeved on the outside of the connection pipe (3), and the left side of the inside of the sleeve (8) is threadedly connected to the right side of the outside of the connection pipe (3).
3. A high pressure piston dynamic seal structure according to claim 1, characterized in that: One end of the spring (5) is fixedly connected to the right side of the second fixing ring (4), and the other end of the spring (5) is fixedly connected to the left side of the sliding ring (6).
4. A high-pressure piston dynamic seal structure according to claim 1, characterized in that: The outside of the sliding ring (6) is in contact with the inside of the cavity (2), and the right side of the sliding ring (6) is in contact with the left side of the sleeve (8).
5. A high pressure piston dynamic seal structure according to claim 1, characterized in that: The left side of the second fixing ring (4) contacts the left inner wall of the first fixing ring (1).