Low-temperature-resistant sealing gasket

Abstract

The utility model relates to the technical field of sealing gaskets, and discloses a low-temperature-resistant sealing gasket which solves the problem that the sealing performance of an existing sealing gasket is reduced in a low-temperature environment and comprises a first sealing gasket, a groove is formed in the top of the first sealing gasket, and an elastic mechanism is arranged in the groove. The elastic mechanism comprises a sealing gasket II movably sleeved in the groove; according to the utility model, through the cooperation between the abutting ring and the second sealing gasket as well as between the second movable ring and the bottom column, when the first sealing ring is extruded, each spring deforms, meanwhile, each elastic ball deforms, and the first sealing ring is tightly attached to the sealing surface under the action of the elasticity of the springs and the elastic balls; meanwhile, the sealing ring I is made of a polytetrafluoroethylene material, the polytetrafluoroethylene material has excellent chemical stability, corrosion resistance and high temperature resistance, and meanwhile, the polytetrafluoroethylene material can keep stable performance in an extremely low temperature environment, so that the low temperature resistance of the whole sealing gasket is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of sealing gasket technology, specifically a low-temperature resistant sealing gasket. Background Technology

[0002] A gasket is a material or structure used to fill the gap between two relatively stationary objects to achieve the purpose of sealing, isolating, or preventing leakage. However, existing gaskets have simple structures and are generally made of rubber materials. As a result, in low-temperature environments, the gasket material becomes harder and less elastic. This leads to a decrease in the contact pressure between the gasket and the sealing surface, which in turn reduces the sealing performance of the gasket and makes it easy for the seal to fail and leak. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a low-temperature resistant sealing gasket, which effectively solves the problem of reduced sealing performance of current sealing gaskets in low-temperature environments.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature resistant sealing gasket, comprising a sealing gasket one, wherein the top of the sealing gasket one is provided with a groove, and an elastic mechanism is provided inside the groove;

[0005] The elastic mechanism includes a sealing gasket 2 that is movably fitted into the groove, an abutment ring that is fixedly installed on the top of the sealing gasket 2, and a sealing ring 1 that is fixedly installed on the top of the abutment ring. The sealing ring 1 is made of polytetrafluoroethylene.

[0006] Preferably, a fixed ring is fixedly installed inside the groove, a second movable ring is movably installed inside the groove above the fixed ring, a second sealing gasket is fixed to the top of the second movable ring, a first movable ring is movably installed inside the groove below the fixed ring, and multiple bottom posts are fixedly connected at equal angles between the first movable ring and the second movable ring, each bottom post passing through the fixed ring and movably connected to the fixed ring.

[0007] Preferably, multiple springs are fixedly connected at equal angles between the movable ring and the fixed ring, and each spring is respectively sleeved on the outside of each bottom post.

[0008] Preferably, multiple support columns are fixedly connected at equal angles on the inner bottom wall of the groove, and an elastic ball that abuts against the bottom of the movable ring is fixedly connected to the top of each support column.

[0009] Preferably, a top ring is fixedly installed on the top of the sealing gasket one, a sealing ring two is fixedly installed on the outer side of the top ring, a wear-resistant layer is fixedly installed on the outer side of the sealing ring two, and the outer side of the wear-resistant layer is in contact with the inner side of the abutment ring.

[0010] Preferably, the wear-resistant layer is made of polyurethane.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) In this utility model, through the cooperation between the abutment ring and the sealing gasket 2, as well as the movable ring 2 and the bottom column, when the sealing ring 1 is squeezed, each spring is deformed and each elastic ball is deformed. Under the action of the spring and elastic ball, the sealing ring 1 is tightly attached to the sealing surface, which improves the sealing performance of the entire sealing gasket. At the same time, the sealing ring 1 is made of polytetrafluoroethylene, which has excellent chemical stability, corrosion resistance and high temperature resistance. It can also maintain stable performance in extremely low temperature environments, thereby ensuring the low temperature resistance of the entire sealing gasket.

[0013] (2) The new type of gasket improves the sealing performance of the entire gasket by cooperating between the top ring and the sealing ring II, as well as the wear-resistant layer and the abutment ring. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the low-temperature resistant sealing gasket structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the sealing gasket of this utility model;

[0018] Figure 3 This is a schematic diagram of the elastic mechanism structure of this utility model.

[0019] In the diagram: 1. Sealing gasket one; 2. Elastic mechanism; 201. Sealing gasket two; 202. Abutment ring; 203. Sealing ring one; 204. Base post; 205. Spring; 206. Movable ring one; 207. Fixed ring; 208. Movable ring two; 3. Support post; 4. Elastic ball; 5. Top ring; 6. Sealing ring two; 7. Groove; 8. Wear-resistant layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example 1, by Figure 1As shown, the present invention includes a sealing gasket 1, the top of which is provided with a groove 7, and the interior of the groove 7 is provided with an elastic mechanism 2.

[0022] Specifically, by Figure 2-3 The elastic mechanism 2 includes a second sealing gasket 201 movably fitted into the groove 7. An abutment ring 202 is fixedly installed on the top of the second sealing gasket 201, and a first sealing ring 203 is fixedly installed on the top of the abutment ring 202. The first sealing ring 203 is made of polytetrafluoroethylene. A fixing ring 207 is fixedly installed inside the groove 7. Above the fixing ring 207 is a second movable ring 208 movably installed into the groove 7. The second sealing gasket 201 is fixed to the top of the second movable ring 208. Below the fixing ring 207 is a second movable ring 208 movably installed into the groove 7. Multiple base posts 204 are fixedly connected at equal angles between the moving ring 206, the movable ring 206, and the movable ring 208. Each base post 204 passes through the fixed ring 207 and is movably connected to the fixed ring 207. Multiple springs 205 are fixedly connected at equal angles between the movable ring 208 and the fixed ring 207. Each spring 205 is sleeved on the outside of each base post 204. Multiple support posts 3 are fixedly connected at equal angles on the inner bottom wall of the groove 7. Each support post 3 has an elastic ball 4 fixedly connected to the top of it, which abuts against the bottom of the movable ring 206.

[0023] When the sealing ring 203 is pressed by the sealing surface, the moving ring 208 moves through the abutment ring 202 and the sealing gasket 201, and the moving ring 206 moves through the bottom posts 204. At the same time, the elastic balls 4 are compressed. At this time, the spring 205 and the elastic balls 4 are deformed. Under the action of the elastic force of the spring 205 and the elastic balls 4, the sealing ring 203 is tightly attached to the sealing surface, improving the sealing performance of the entire sealing gasket. The sealing ring 203 is made of polytetrafluoroethylene, which has excellent chemical stability, corrosion resistance and high temperature resistance. At the same time, it can maintain stable performance in extremely low temperature environments, ensuring the low temperature resistance of the entire sealing gasket.

[0024] Specifically, by Figure 2 As shown, a top ring 5 is fixedly installed on the top of the sealing gasket 1, a sealing ring 6 is fixedly installed on the outside of the top ring 5, a wear-resistant layer 8 is fixedly installed on the outside of the sealing ring 6, the outside of the wear-resistant layer 8 is in contact with the inside of the abutment ring 202, and the wear-resistant layer 8 is made of polyurethane material.

[0025] In use, firstly, a top ring 5 is fixed on the top of the sealing gasket 1, and a sealing ring 2 6 is set on the outside of the top ring 5. At the same time, a wear-resistant layer 8 that fits against the abutment ring 202 is set on the outside of the sealing ring 2 6 to further improve the sealing performance of the entire sealing gasket. The wear-resistant layer 8 is made of polyurethane material, which has high strength and wear resistance, and finally prevents the sealing ring 2 6 from being worn.

Claims

1. A low-temperature resistant sealing gasket, comprising a sealing gasket one (1), characterized in that: The top of the sealing gasket (1) is provided with a groove (7), and the interior of the groove (7) is provided with an elastic mechanism (2); The elastic mechanism (2) includes a sealing gasket two (201) that is movably fitted into the groove (7). An abutment ring (202) is fixedly installed on the top of the sealing gasket two (201). A sealing ring one (203) is fixedly installed on the top of the abutment ring (202). The sealing ring one (203) is made of polytetrafluoroethylene.

2. The low-temperature resistant sealing gasket according to claim 1, characterized in that: A fixing ring (207) is fixedly installed inside the groove (7). Above the fixing ring (207) is a movable ring two (208) that is movably installed inside the groove (7). A sealing gasket two (201) is fixed to the top of the movable ring two (208). Below the fixing ring (207) is a movable ring one (206) that is movably installed inside the groove (7). Multiple bottom posts (204) are fixedly connected at equal angles between the movable ring one (206) and the movable ring two (208). Each bottom post (204) passes through the fixing ring (207) and is movably connected to the fixing ring (207).

3. The low-temperature resistant sealing gasket according to claim 2, characterized in that: Multiple springs (205) are fixedly connected at equal angles between the movable ring (208) and the fixed ring (207), and each spring (205) is sleeved on the outside of each bottom post (204).

4. The low-temperature resistant sealing gasket according to claim 1, characterized in that: Multiple support columns (3) are fixedly connected at equal angles on the inner bottom wall of the groove (7), and each support column (3) has an elastic ball (4) fixedly connected to the top of the top of the support column (3) and abutting against the bottom of the movable ring (206).

5. A low-temperature resistant sealing gasket according to claim 1, characterized in that: A top ring (5) is fixedly installed on the top of the sealing gasket (1), a sealing ring (6) is fixedly installed on the outside of the top ring (5), a wear-resistant layer (8) is fixedly installed on the outside of the sealing ring (6), and the outside of the wear-resistant layer (8) is in contact with the inside of the abutment ring (202).

6. A low-temperature resistant sealing gasket according to claim 5, characterized in that: The wear-resistant layer (8) is made of polyurethane.

Images