Polytetrafluoroethylene composite sealing product

Abstract

The utility model relates to the technical field of sealing products, and discloses a polytetrafluoroethylene composite sealing product, which solves the problem that the existing polytetrafluoroethylene sealing ring is easy to deform and lose elasticity under the influence of factors such as air temperature, humidity and pressure, and comprises an inner ring, and an outer ring is arranged on the outer side of the inner ring. A connecting mechanism and a supporting mechanism are installed between the inner ring and the outer ring, two polytetrafluoroethylene sealing rings are symmetrically arranged between the inner ring and the outer ring, and the connecting mechanism comprises a fixing block fixed to the outer side of the inner ring; according to the sealing device, through the cooperation of the connecting block and the sliding block and the cooperation of the L-shaped round rod and the movable rod, when the polytetrafluoroethylene sealing ring is extruded, the guide block can slide along the guide column conveniently, the spring deforms, and then the polytetrafluoroethylene sealing ring is tightly attached to an external object under the action of the elastic force of the spring; therefore, the polytetrafluoroethylene sealing ring has elasticity to improve the sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing products, in particular to a polytetrafluoroethylene composite sealing product. Background Art

[0002] Polytetrafluoroethylene sealing products are a kind of high-performance sealing material, which are widely used in various occasions requiring high sealing performance. They are mainly made of polytetrafluoroethylene materials and have excellent chemical corrosion resistance, high temperature resistance, low friction coefficient and good sealing performance. Polytetrafluoroethylene sealing products are widely used in defense, chemical industry, coal, petroleum, metallurgy, transportation and machinery manufacturing industries, and have become basic parts and accessories in various industries. In addition, due to its non-toxic, odorless and food hygiene requirements, polytetrafluoroethylene sealing products are also widely used in household appliances such as household refrigerators, washing machines and televisions. In medical equipment, due to its excellent biocompatibility and chemical stability, polytetrafluoroethylene seals are also widely used in artificial joints, catheters and other medical devices. In electronic equipment, polytetrafluoroethylene seals are used in capacitors, cables and switchgear due to their excellent insulation properties and stable physical and chemical properties.

[0003] Most of the existing polytetrafluoroethylene sealing rings are of an integrated structure. The polytetrafluoroethylene sealing ring is easily deformed and loses its elasticity under the influence of factors such as temperature, humidity, and pressure, thereby causing the sealing performance of the polytetrafluoroethylene sealing ring to deteriorate. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a polytetrafluoroethylene composite sealing product, which effectively solves the problem that the current polytetrafluoroethylene sealing ring is easily deformed and loses elasticity due to factors such as temperature, humidity, and pressure.

[0005] To achieve the above object, the utility model provides the following technical solution: a polytetrafluoroethylene composite sealing product, comprising an inner ring, an outer ring is arranged outside the inner ring, a connecting mechanism and a supporting mechanism are installed between the inner ring and the outer ring, and two polytetrafluoroethylene sealing rings are symmetrically arranged between the inner ring and the outer ring;

[0006] The connecting mechanism includes a fixed block fixed to the outer side of the inner ring, a guide column is fixedly connected between the fixed block and the outer ring, an L-shaped round rod is fixedly connected between the top and bottom of the fixed block and the inner ring, sliders are movably sleeved on the outer sides of the two L-shaped round rods, connecting blocks are fixedly installed on the sides of the two sliders away from each other, and the two connecting blocks are respectively fixedly connected to the sides of the two polytetrafluoroethylene sealing rings close to each other.

[0007] Preferably, a guide block is movably sleeved on the outer side of the guide column, a spring is fixedly connected between the guide block and the fixed block, and the spring is sleeved on the outer side of the guide column.

[0008] Preferably, the outer side of the guide block is symmetrically rotatably connected to two movable rods, and one end of the two movable rods away from the guide block is rotatably connected to the two sliding blocks respectively.

[0009] Preferably, the support mechanism comprises a support ring located between the inner ring and the outer ring, and elastic balls are fixedly mounted on the support ring at equal angles.

[0010] Preferably, a fixing ring is fixedly mounted on one side of the polytetrafluoroethylene sealing ring close to the supporting ring, and the fixing ring is in contact with the elastic ball.

[0011] Preferably, a support block 1 is fixedly connected at an equal angle between the support ring and the inner ring, and a support block 2 is fixedly connected at an equal angle between the support ring and the outer ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model, through the cooperation between the connecting block and the slider, and the L-shaped round rod and the movable rod, when the polytetrafluoroethylene sealing ring is squeezed, it is convenient for the guide block to slide along the guide column, so that the spring is deformed, and then the polytetrafluoroethylene sealing ring is closely fitted with the external object under the action of the spring elastic force, so that the polytetrafluoroethylene sealing ring has elasticity to improve the sealing effect;

[0014] (2) The new type of sealing ring is convenient for the fixed ring to squeeze the elastic ball when the polytetrafluoroethylene sealing ring is squeezed, thereby further improving the sealing performance of the entire sealing ring by relying on the elastic effect of the elastic ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a 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 to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of the polytetrafluoroethylene composite sealing product of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer ring of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connection mechanism of the utility model;

[0020] Figure 4This is a schematic diagram of the support mechanism structure of the utility model.

[0021] In the figure: 1. inner ring; 2. connecting mechanism; 201. fixed block; 202. L-shaped round rod; 203. connecting block; 204. movable rod; 205. guide column; 206. guide block; 207. spring; 208. slider; 3. supporting mechanism; 301. supporting ring; 302. elastic ball; 303. fixing ring; 304. supporting block one; 305. supporting block two; 4. outer ring; 5. polytetrafluoroethylene sealing ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Embodiment 1, by Figure 1-2 It is given that the utility model comprises an inner ring 1, an outer ring 4 is arranged on the outer side of the inner ring 1, a connecting mechanism 2 and a supporting mechanism 3 are installed between the inner ring 1 and the outer ring 4, and two polytetrafluoroethylene sealing rings 5 ​​are symmetrically arranged between the inner ring 1 and the outer ring 4.

[0024] Specifically, by Figure 3 It is given that the connection mechanism 2 includes a fixed block 201 fixed to the outer side of the inner ring 1, a guide column 205 is fixedly connected between the fixed block 201 and the outer ring 4, an L-shaped round rod 202 is fixedly connected between the top and bottom of the fixed block 201 and the inner ring 1, and sliders 208 are movably sleeved on the outer sides of the two L-shaped round rods 202, and connecting blocks 203 are fixedly installed on the sides of the two sliders 208 that are away from each other, and the two connecting blocks 203 are respectively fixedly connected to the sides of the two polytetrafluoroethylene sealing rings 5 ​​that are close to each other, and a guide block 206 is movably sleeved on the outer side of the guide column 205, and a spring 207 is fixedly connected between the guide block 206 and the fixed block 201, and the spring 207 is sleeved on the outer side of the guide column 205, and the outer side of the guide block 206 is symmetrically rotatably connected to two movable rods 204, and the ends of the two movable rods 204 away from the guide block 206 are respectively rotatably connected to the two sliders 208;

[0025] When in use, first when the polytetrafluoroethylene sealing ring 5 is squeezed, it drives the connecting block 203 to move, and drives the slider 208 to slide along the L-shaped round rod 202, and then drives the guide block 206 to slide along the guide column 205 through the movable rod 204. At this time, the spring 207 is deformed, and under the action of the elastic force of the spring 207, the polytetrafluoroethylene sealing ring 5 is tightly fitted with the external object, finally ensuring the sealing performance of the entire sealing ring.

[0026] Specifically, by Figure 4 It is given that the support mechanism 3 includes a support ring 301 located between the inner ring 1 and the outer ring 4, an elastic ball 302 is fixedly installed at an equal angle on the support ring 301, a fixing ring 303 is fixedly installed on the side of the polytetrafluoroethylene sealing ring 5 close to the support ring 301, the fixing ring 303 is fitted with the elastic ball 302, a support block 1 304 is fixedly connected at an equal angle between the support ring 301 and the inner ring 1, and a support block 2 305 is fixedly connected at an equal angle between the support ring 301 and the outer ring 4;

[0027] When the polytetrafluoroethylene sealing ring 5 is squeezed in use, it drives the fixing ring 303 to move and squeeze each elastic ball 302. At this time, each elastic ball 302 is deformed. Finally, the elastic effect of the elastic ball 302 further improves the sealing performance of the entire sealing ring.

Claims

1. A polytetrafluoroethylene composite sealing product, comprising an inner ring (1), characterized in that: An outer ring (4) is provided on the outer side of the inner ring (1), a connecting mechanism (2) and a supporting mechanism (3) are installed between the inner ring (1) and the outer ring (4), and two polytetrafluoroethylene sealing rings (5) are symmetrically provided between the inner ring (1) and the outer ring (4); The connection mechanism (2) comprises a fixed block (201) fixed to the outer side of the inner ring (1); a guide column (205) is fixedly connected between the fixed block (201) and the outer ring (4); an L-shaped round rod (202) is fixedly connected between the top and bottom of the fixed block (201) and the inner ring (1); sliders (208) are movably sleeved on the outer sides of the two L-shaped round rods (202); a connection block (203) is fixedly installed on the side of the two sliders (208) that are away from each other; and the two connection blocks (203) are respectively fixedly connected to the sides of the two polytetrafluoroethylene sealing rings (5) that are close to each other.

2. A polytetrafluoroethylene composite sealing product according to claim 1, characterized in that: A guide block (206) is movably sleeved on the outer side of the guide column (205), a spring (207) is fixedly connected between the guide block (206) and the fixed block (201), and the spring (207) is sleeved on the outer side of the guide column (205).

3. A polytetrafluoroethylene composite sealing product according to claim 2, characterized in that: The outer side of the guide block (206) is symmetrically rotatably connected to two movable rods (204), and one end of the two movable rods (204) away from the guide block (206) is rotatably connected to two sliding blocks (208) respectively.

4. The polytetrafluoroethylene composite sealing product according to claim 1, characterized in that: The support mechanism (3) comprises a support ring (301) located between the inner ring (1) and the outer ring (4), and elastic balls (302) are fixedly mounted at equal angles on the support ring (301).

5. The polytetrafluoroethylene composite sealing product according to claim 1, characterized in that: A fixing ring (303) is fixedly mounted on one side of the polytetrafluoroethylene sealing ring (5) close to the supporting ring (301), and the fixing ring (303) is fitted with the elastic ball (302).

6. The polytetrafluoroethylene composite sealing product according to claim 4, characterized in that: A support block 1 (304) is fixedly connected at an equal angle between the support ring (301) and the inner ring (1), and a support block 2 (305) is fixedly connected at an equal angle between the support ring (301) and the outer ring (4).

Images