High-pressure-resistant PE bottle cap sealing device with multi-layer buffer structure
By introducing a multi-layered cushioning structure into the PE bottle cap, including compression springs and sealing gaskets, the problems of cap deformation and sealing failure under high pressure are solved, achieving better cushioning and sealing effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-17
AI Technical Summary
Existing PE bottle caps are prone to deformation or seal failure under high pressure, leading to leakage or liquid deterioration.
A PE bottle cap with a multi-layer buffer structure was designed, including a compression spring, a movable ring, a fixed frame, a movable frame, a connecting groove, and a venting groove. These components are used to buffer and release pressure under high pressure, and multiple compression springs provide secondary buffering. The sealing performance is improved by combining a sealing gasket and a PE sealing ring.
It effectively improves the cushioning and sealing performance of the bottle cap, prevents leakage and liquid deterioration, and enhances the stability of use under high pressure.
Smart Images
Figure CN224000134U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of PE bottle cap sealing devices, specifically a high-pressure PE bottle cap sealing device with a multi-layer buffer structure. Background Technology
[0002] Polyethylene (chemical abbreviation PE) is a thermoplastic resin obtained by polymerizing ethylene. It is odorless, non-toxic, and has a waxy feel. It has excellent low-temperature resistance, good chemical stability, and can withstand the corrosion of most acids and alkalis. Bottle caps made from PE through injection molding have high-pressure resistance.
[0003] Existing PE bottle caps are installed on the bottle body during use. When the bottle contains fermenting liquids, the fermenting liquids release gas, causing the internal pressure of the bottle to increase. Existing PE bottle caps usually do not have a buffer structure. Under high pressure, the PE bottle caps are prone to deformation or seal failure after being subjected to continuous impact from the internal pressure, which can lead to leakage or cause the liquid inside the bottle to deteriorate. Summary of the Invention
[0004] The purpose of this invention is to provide a high-pressure PE bottle cap sealing device with a multi-layer buffer structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-pressure resistant PE bottle cap sealing device with a multi-layer buffer structure is provided, including a PE bottle cap. A compression spring is fixedly connected to the inner top of the PE bottle cap. A movable ring is fixedly connected to the end of the compression spring away from the inner top of the PE bottle cap, and the movable ring is slidably connected to the inner sidewall of the PE bottle cap. A fixed frame is fixedly connected to the inner sidewall of the PE bottle cap. A first limiting groove is provided at the bottom of the fixed frame. A movable frame is slidably connected to the outside of the fixed frame. A protruding ring is provided at the inner bottom of the movable frame, and the protruding ring is slidably connected to the inside of the first limiting groove. A connecting groove is provided inside the protruding ring. A venting groove is provided on the inner sidewall of the fixed frame, and the venting groove corresponds to the position of the connecting groove. A sealing gasket is fitted on the circumferential surface of the fixed frame, and the end of the movable frame is in contact with the bottom of the sealing gasket.
[0006] Optionally, the number of compression springs is multiple, and they are arranged in a ring shape at the top of the movable ring.
[0007] Optionally, a second limiting groove is provided between the movable frame and the convex ring, and the circumferential surface of the fixed frame is in contact with the inner sidewall of the second limiting groove.
[0008] Optionally, a mounting bracket is fixedly connected to the inner wall of the PE bottle cap, and a PE sealing ring is installed inside the mounting bracket.
[0009] Optionally, the inner wall of the PE bottle cap is provided with an internal thread, and the internal thread is located below the PE sealing ring.
[0010] Optionally, the PE bottle cap has an anti-slip texture on its exterior, and the number of anti-slip textures is multiple.
[0011] Optionally, a connecting tube is installed inside the PE bottle cap. The top of the connecting tube has a vent hole, and the inner wall of the vent hole has a pressure relief groove. The inner wall of the connecting tube has a connecting hole that communicates with the pressure relief groove. A support ring is fixedly connected to the inner wall of the connecting tube, and a movable plate is slidably connected to the inner wall of the connecting tube. A connecting column is fixedly connected to the bottom of the movable plate, and the bottom of the connecting column is fixedly connected to the top of the movable ring.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This utility model is equipped with a compression spring, a movable ring, a fixed frame, a movable bracket, a connecting groove, and a venting groove. In use, this utility model is installed on the bottle body. When the internal air pressure of the bottle body increases, it pushes the movable bracket to squeeze the sealing gasket, causing the connecting groove at the bottom of the movable bracket to move upward and connect with the venting groove on the inner side wall of the fixed frame, thereby buffering and relieving pressure. The released pressure pushes the movable ring to compress the compression spring, thereby providing secondary buffering of the released pressure, which helps to improve the buffering performance of the device.
[0014] 2. This utility model is equipped with a mounting bracket and a PE sealing ring. When the bottle mouth is connected to the PE bottle cap through the internal thread, it fits into the PE sealing ring. The limiting effect of the mounting bracket helps to improve the sealing performance of the bottle. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;
[0019] Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.
[0020] In the diagram: 1. PE bottle cap; 2. Compression spring; 3. Movable ring; 4. Fixing bracket; 5. Sealing gasket; 6. Movable bracket; 7. First limiting groove; 8. Vent groove; 9. Connecting groove; 10. Mounting bracket; 11. PE sealing ring; 12. Second limiting groove; 13. Anti-slip texture; 14. Internal thread; 15. Raised ring; 16. Connecting pipe; 17. Vent hole; 18. Pressure relief groove; 19. Connecting hole; 20. Movable plate; 21. Support ring; 22. Connecting column. Detailed Implementation
[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] Reference Figure 1-4 A high-pressure resistant PE bottle cap sealing device with a multi-layer buffer structure includes a PE bottle cap 1. A compression spring 2 is fixedly connected to the inner top of the PE bottle cap 1. A movable ring 3 is fixedly connected to the end of the compression spring 2 away from the inner top of the PE bottle cap 1, and the movable ring 3 is slidably connected to the inner side wall of the PE bottle cap 1. A fixing frame 4 is fixedly connected to the inner side wall of the PE bottle cap 1. A first limiting groove 7 is opened at the bottom of the fixing frame 4. A movable frame 6 is slidably connected to the outside of the fixing frame 4. A protruding ring 15 is provided at the inner bottom of the movable frame 6, and the protruding ring 15 is slidably connected to the inside of the first limiting groove 7. A connecting groove 9 is opened inside the protruding ring 15. A venting groove 8 is opened on the inner side wall of the fixing frame 4, and the venting groove 8 corresponds to the position of the connecting groove 9. A sealing gasket 5 is fitted on the circumferential surface of the fixing frame 4, and the end of the movable frame 6 is in contact with the bottom of the sealing gasket 5. When in use, this utility model is installed on the bottle body. When the internal air pressure of the bottle body increases, it pushes the movable frame 6 to squeeze the sealing gasket 5, causing the connecting groove 9 at the bottom of the movable frame 6 to move upward and connect with the ventilation groove 8 on the inner side wall of the fixed frame 4, thereby buffering and relieving pressure. The released pressure pushes the movable ring 3 to compress the compression spring 2, thereby providing secondary buffering for the released pressure, which helps to improve the buffering performance of the device.
[0023] There are multiple compression springs 2, which are arranged in a ring at the top of the movable ring 3. The compression resistance of the movable ring 3 can be improved by using multiple compression springs 2.
[0024] A second limiting groove 12 is provided between the movable frame 6 and the convex ring 15, and the circumferential surface of the fixed frame 4 is in contact with the inner sidewall of the second limiting groove 12. The fixed frame 4 and the movable frame 6 are connected to each other, and the connecting groove 9 and the venting groove 8 are connected by squeezing the sealing gasket 5.
[0025] A mounting bracket 10 is fixedly connected to the inner wall of the PE bottle cap 1, and a PE sealing ring 11 is installed inside the mounting bracket 10. When the bottle mouth is connected to the PE bottle cap 1, it contacts the PE sealing ring 11, thereby improving the sealing performance of the bottle.
[0026] The inner wall of the PE bottle cap 1 is provided with an internal thread 14, and the internal thread 14 is located below the PE sealing ring 11, which facilitates connection with the bottle mouth.
[0027] The PE bottle cap 1 has anti-slip textures 13 on its outer surface, and there are multiple anti-slip textures 13. The anti-slip textures 13 make it easy to twist the PE bottle cap 1.
[0028] A connecting pipe 16 is installed inside the PE bottle cap 1. A vent hole 17 is provided at the top of the connecting pipe 16, and a pressure relief groove 18 is provided on the inner wall of the vent hole 17. A connecting hole 19 is provided on the inner wall of the connecting pipe 16, and the connecting hole 19 communicates with the pressure relief groove 18. A support ring 21 is fixedly connected to the inner wall of the connecting pipe 16, and a movable plate 20 is slidably connected to the inner wall of the connecting pipe 16. A connecting post 22 is fixedly connected to the bottom of the movable plate 20, and the bottom of the connecting post 22 is fixedly connected to the top of the movable ring 3. When the movable ring 3 is pushed by pressure, it pushes the movable plate 20 upward through the connecting post 22, causing the internal air pressure to enter the pressure relief groove 18 through the connecting hole 19 and be discharged through the vent hole 17. After the internal pressure is discharged, the compression spring 2 pushes the movable ring 3, causing the connecting post 22 to move downward, so that the movable plate 20 seals the connecting hole 19, thereby achieving a tight seal for the connecting pipe 16.
[0029] Working principle: During use, the internal thread 14 inside the PE bottle cap 1 is connected to the bottle mouth, and the bottle mouth contacts the PE sealing ring 11, thereby improving the sealing performance of the bottle. When the air pressure inside the bottle increases, it pushes the movable frame 6 to squeeze the sealing gasket 5, causing the connecting groove 9 at the bottom of the movable frame 6 to move upward and connect with the vent groove 8 on the inner side wall of the fixed frame 4, thereby buffering and relieving pressure. The released pressure pushes the movable ring 3 to compress the compression spring 2, thereby providing secondary buffering for the released pressure. The multi-layer buffer structure helps to improve the buffering performance of the device.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 high-pressure-resistant PE bottle cap sealing device with a multi-layer buffer structure, comprising a PE bottle cap (1), characterized in that: The inner top of the PE bottle cap (1) is fixedly connected with a compression spring (2), one end of the compression spring (2) away from the inner top of the PE bottle cap (1) is fixedly connected with a movable ring (3), and the movable ring (3) is slidably connected with the inner side wall of the PE bottle cap (1), the inner side wall of the PE bottle cap (1) is fixedly connected with a fixed frame (4), the bottom of the fixed frame (4) is provided with a first limiting groove (7), the outer portion of the fixed frame (4) is slidably connected with a movable frame (6), the inner bottom of the movable frame (6) is provided with a convex ring (15), and the convex ring (15) is slidably connected with the inner portion of the first limiting groove (7), the inner portion of the convex ring (15) is provided with a connecting groove (9), the inner side wall of the fixed frame (4) is provided with a ventilation groove (8), and the ventilation groove (8) corresponds to the position of the connecting groove (9), the circumferential surface of the fixed frame (4) is provided with a sealing washer (5), and the end portion of the movable frame (6) is attached to the bottom of the sealing washer (5).
2. The high-pressure resistant PE bottle cap sealing device with a multi-layer buffer structure according to claim 1, characterized in that: The number of the compression spring (2) is multiple, and the compression spring (2) is annularly distributed on the top of the movable ring (3).
3. The high pressure resistant PE bottle cap sealing device with multi-layer buffer structure according to claim 2, characterized in that: The second limiting groove (12) is arranged between the movable frame (6) and the convex ring (15), and the circumferential surface of the fixed frame (4) is attached to the inner side wall of the second limiting groove (12).
4. The high-pressure resistant PE bottle cap sealing device with a multi-layer buffer structure according to claim 3, characterized in that: The inner side wall of the PE bottle cap (1) is fixedly connected with a mounting frame (10), and the mounting frame (10) is internally mounted with a PE sealing ring (11).
5. The high pressure resistant PE bottle cap sealing device with multi-layer buffer structure according to claim 4, characterized in that: The inner side wall of the PE bottle cap (1) is provided with an internal thread (14), and the internal thread (14) is located below the PE sealing ring (11).
6. A high pressure resistant PE bottle cap sealing device with multi-layer buffer structure according to claim 5, characterized in that: The outer portion of the PE bottle cap (1) is provided with anti-skid lines (13), and the number of the anti-skid lines (13) is multiple.
7. A high pressure resistant PE bottle cap sealing device with multi-layer buffer structure according to claim 6, characterized in that: The inside of the PE bottle cap (1) is mounted with a connecting pipe (16), the top of the connecting pipe (16) is provided with a deflation hole (17), the inner side wall of the deflation hole (17) is provided with a pressure relief groove (18), the inner side wall of the connecting pipe (16) is provided with a connecting hole (19), the connecting hole (19) is in communication with the pressure relief groove (18), the inner side wall of the connecting pipe (16) is fixedly connected with a supporting ring (21), the inner side wall of the connecting pipe (16) is slidably connected with a movable plate (20), the bottom of the movable plate (20) is fixedly connected with a connecting column (22), and the bottom of the connecting column (22) is fixedly connected with the top of the movable ring (3).