A toothed tetrafluoroethylene-filled metal wound gasket structure

Abstract

The utility model discloses a kind of metal winding gasket structures filled with tooth-shaped tetrafluoroethylene, solve the inner and outer ring non-rigid connection of gasket, the problem of not good in the use condition under easily impacted use, it includes two gasket bodies, two The gasket body is arranged in parallel up and down, connecting reinforcement component is arranged between the upper and lower gasket body, gasket body includes outer ring of outside and inner ring of inside, gasket piece is arranged between outer ring and inner ring, gasket piece is formed by metal band and tooth-shaped tetrafluoroethylene band mutual winding, positioning installation component is set on outer ring and inner ring, connecting reinforcement component and positioning installation component cooperate and strengthen and fix outer ring and inner ring;The utility model, in work, install connecting plate body between the upper and lower gasket body set, by screwing screw, push positioning block to move, so that clamping block is clamped into slot, the outer ring and inner ring are clamped and fixed, to improve the connection strength.

Description

Technical Field

[0001] This utility model belongs to the field of metal spiral wound gasket technology, specifically a toothed PTFE-filled metal spiral wound gasket structure. Background Technology

[0002] The structural design of metal spiral wound gaskets integrates the rigid support of metal with the flexible sealing properties of non-metallic materials. Its core structure consists of a metal strip, a non-metallic filler strip, and optional inner and outer rings. The toothed PTFE-filled metal spiral wound gasket structure generally consists of an inner ring, an outer ring, a toothed metal spiral wound strip, and a toothed PTFE filler strip. The toothed metal spiral wound strip and the toothed PTFE filler strip together form the metal spiral wound gasket. The connection between the metal spiral wound gasket and the outer and inner rings is not through rigid fixing methods such as welding or bonding, but rather based on a flexible fit and positioning according to mechanical structure design and winding tension. However, the following drawbacks still exist:

[0003] Since the inner and outer rings are not rigidly fixed, in some operating conditions that are prone to impact, the fixed connection between the inner and outer rings is not effective and they are easily damaged by impact, causing the inner and outer rings to shift, thus affecting the sealing stability. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a toothed PTFE-filled metal spiral wound gasket structure, which effectively solves the problem that the inner and outer rings of the gasket are not rigidly connected and are not suitable for use in impact-prone working conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a toothed PTFE-filled metal spiral wound gasket structure, comprising two gasket bodies, the two gasket bodies being arranged vertically in parallel, and a connecting reinforcement component being provided between the two upper and lower gasket bodies;

[0006] The gasket body includes an outer ring on the outside and an inner ring on the inside. A gasket component is provided between the outer ring and the inner ring. The gasket component is made of metal strip and toothed PTFE strip wound together.

[0007] Positioning and mounting components are provided on the outer ring and the inner ring. The connecting reinforcement components work together with the positioning and mounting components to reinforce and fix the outer ring and the inner ring.

[0008] Preferably, the positioning and installation component includes a first positioning groove formed at equal angles on the top and bottom walls of the outer ring, and a second positioning groove formed at equal angles on the top and bottom walls of the inner ring.

[0009] Preferably, the first positioning groove near the outer ring axis and the second positioning groove near the inner ring axis are both provided with a slot.

[0010] Preferably, the connection reinforcement component includes a connecting plate disposed between the upper and lower gasket bodies, the connecting plate having a first movable groove at equal angles and a second movable groove at equal angles, the first movable groove corresponding to the first positioning groove and the second movable groove corresponding to the second positioning groove.

[0011] Preferably, positioning blocks are installed on the inner sides of the first movable groove and the inner sides of the second movable groove. The two ends of the positioning blocks are located on the upper and lower sides of the connecting plate, respectively. Two locking blocks are symmetrically installed on the side of the positioning blocks closest to the axis of the connecting plate.

[0012] Preferably, a connecting groove is provided between the first and second movable grooves located on the same straight line, and a connecting rod is provided inside the connecting groove, with both ends of the connecting rod being fixedly connected to two positioning blocks respectively.

[0013] Preferably, a screw cylinder is installed at the end of the first movable groove away from the second movable groove, a screw rod is installed on the internal thread of the screw cylinder, a limiting rotating block is fixedly installed at one end of the screw rod, the limiting rotating block is rotatably installed inside the limiting rotating groove, and the limiting rotating groove is opened on the positioning block located inside the first movable groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In operation, a connecting plate is installed between the upper and lower gasket bodies. The positioning block enters the first and second positioning slots to position the two gasket bodies. Then, by turning the screw, the positioning block is moved so that the locking block is engaged in the slot, and the outer ring and inner ring are locked together and fixed, thereby improving the connection strength.

[0016] During operation, when the outer and inner rings need to be snapped together, the upper and lower metal spiral wound gaskets are tightly attached to the surfaces of the two flanges to complete the seal. In situations where the outer and inner rings do not require excessive fixing strength, the two gasket bodies can seal independently, making them convenient to use. Attached Figure Description

[0017] 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.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of a toothed PTFE-filled metal spiral wound gasket structure according to the present invention.

[0020] Figure 2 This is a schematic diagram of the gasket body structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the outer and inner ring structures of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection reinforcement component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the positioning block structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the screw and the positioning block of this utility model.

[0025] In the figure: 1. Gasket body; 101. Outer ring; 102. Inner ring; 103. Toothed metal spiral band; 104. Toothed PTFE filling band; 2. Connecting reinforcement assembly; 201. Connecting plate; 202. First movable groove; 203. Second movable groove; 204. Positioning block; 205. Locking block; 206. Connecting groove; 207. Connecting rod; 208. Screw; 209. Screw; 210. Limiting rotating block; 211. Limiting rotating groove; 3. Positioning installation assembly; 301. First positioning groove; 302. Second positioning groove; 303. Locking groove. Detailed Implementation

[0026] 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.

[0027] Depend on Figure 1-6 This utility model relates to a toothed PTFE-filled metal spiral wound gasket structure, comprising two gasket bodies 1 arranged parallel to each other vertically, with a connecting reinforcement component 2 between the two gasket bodies 1. Each gasket body 1 includes an outer ring 101 and an inner ring 102. A gasket element is provided between the outer ring 101 and the inner ring 102, and the gasket element is formed by intertwining a metal strip and a toothed PTFE strip. A positioning and mounting component 3 is provided on the outer ring 101 and the inner ring 102. The connecting reinforcement component 2 and the positioning and mounting component 3 cooperate to reinforce and fix the outer ring 101 and the inner ring 102. When the outer ring 101 and the inner ring 102 need to be snapped together, the two metal spiral wound gaskets are tightly attached to the surfaces of the two flanges respectively to complete the seal. Under the condition that the fixing strength of the outer ring 101 and the inner ring 102 does not need to be too high, the two gasket bodies 1 can seal independently, which is convenient to use.

[0028] The positioning and installation component 3 includes a first positioning groove 301 formed at equal angles on the top and bottom walls of the outer ring 101, and a second positioning groove 302 formed at equal angles on the top and bottom walls of the inner ring 102. A slot 303 is formed at the end of the first positioning groove 301 near the axis of the outer ring 101 and at the end of the second positioning groove 302 near the axis of the inner ring 102.

[0029] The connecting reinforcement assembly 2 includes a connecting plate 201 disposed between two upper and lower gasket bodies 1. The connecting plate 201 has a first movable groove 202 and a second movable groove 203 formed at equal angles. The first movable groove 202 corresponds one-to-one with the first positioning groove 301, and the second movable groove 203 corresponds one-to-one with the second positioning groove 302. Positioning blocks 204 are installed on the inner sides of both the first and second movable grooves 202 and 203, respectively. The two ends of each positioning block 204 are located on the upper and lower sides of the connecting plate 201. Two locking blocks 205 are symmetrically installed on the side of the positioning block 204 closest to the axis of the connecting plate 201. A connecting groove 206 is formed between the first and second movable grooves 202 and 203, which are on the same straight line. A connecting rod 207 is disposed inside the connecting groove 206. Both ends of 7 are fixedly connected to two positioning blocks 204 respectively. A screw cylinder 208 is installed at the end of the first movable groove 202 away from the second movable groove 203. A screw rod 209 is installed on the internal thread of the screw cylinder 208. A limiting rotating block 210 is fixedly installed at one end of the screw rod 209. The limiting rotating block 210 is rotatably installed inside the limiting rotating groove 211. The limiting rotating groove 211 is opened on the positioning block 204 located inside the first movable groove 202. A connecting plate 201 is installed between the upper and lower gasket bodies 1. The positioning of the two gasket bodies 1 is completed by the positioning block 204 entering the first positioning groove 301 and the second positioning groove 302. Then, by turning the screw rod 209, the positioning block 204 is pushed to move, so that the locking block 205 is locked into the locking groove 303, and the outer ring 101 and the inner ring 102 are locked and fixed, thereby improving the connection strength.

[0030] Working principle: During installation, the gasket body 1 is installed between the upper and lower flanges, and then positioned to complete the installation. The metal spiral wound gasket, which is set between the outer ring 101 and the inner ring 102, is tightly attached to the upper and lower sides of the two flanges to complete the seal. The metal spiral wound is formed by interlocking toothed metal spiral wound 103 and toothed PTFE filler 104. The toothed metal spiral wound 103 itself forms a "spring-like" structure through spiral winding, and the toothed design further enhances its axial elasticity. When the flange is compressed by preload, the toothed metal spiral wound 103 undergoes elastic deformation and stores potential energy. When the operating conditions fluctuate, the toothed metal spiral wound 103 releases elastic potential energy, pushing the toothed PTFE filler 104 to continuously adhere to the sealing surface and maintain a stable sealing pressure.

[0031] When in use, since the connection between the metal spiral wound gasket and the outer ring 101 and the inner ring 102 is not through rigid fixing methods such as welding or bonding, but based on the mechanical structure design and flexible fitting and positioning of the winding tension, the fixing strength between the outer ring 101 and the inner ring 102 is not high. When a higher fixing effect between the outer ring 101 and the inner ring 102 is required, the following treatment is required.

[0032] Two gasket bodies 1 are stacked vertically, and a connecting plate 201 is installed between the two gasket bodies 1. The two ends of the positioning block 204 inside the first movable groove 202 of the connecting plate 201 are inserted into the first positioning grooves 301 on the two outer rings 101 respectively. The two ends of the positioning block 204 inside the second movable groove 203 of the connecting plate 201 are inserted into the second positioning grooves 302 on the two inner rings 102 respectively to complete the positioning. Then the screw 209 is tightened. Since the screw 209 is threadedly connected to the screw barrel 208, during the tightening process, the screw 209 moves towards the positioning block 204, thereby pushing the positioning block 204 to move, so that the locking block 205 on the positioning block 204 is engaged into the locking groove 303, thereby locking and fixing the outer rings 101 and inner rings 102 on the two gasket bodies 1. At the same time, the two metal spiral wound gaskets are tightly attached to the surfaces of the two flanges on the side closest to each other to complete the seal and improve the installation strength.

Claims

1. A toothed PTFE-filled metal spiral wound gasket structure, comprising two gasket bodies (1), characterized in that: The two gasket bodies (1) are arranged in parallel, and a connecting reinforcement component (2) is provided between the two gasket bodies (1). The gasket body (1) includes an outer ring (101) on the outside and an inner ring (102) on the inside. A gasket is provided between the outer ring (101) and the inner ring (102). The gasket is made of metal strip and toothed PTFE strip wound together. Positioning and mounting components (3) are provided on the outer ring (101) and the inner ring (102). The connecting reinforcement component (2) and the positioning and mounting component (3) cooperate to reinforce and fix the outer ring (101) and the inner ring (102). The positioning and installation component (3) includes a first positioning groove (301) that is opened at equal angles on the top and bottom walls of the outer ring (101), and a second positioning groove (302) that is opened at equal angles on the top and bottom walls of the inner ring (102). A slot (303) is opened at one end of the first positioning groove (301) near the axis of the outer ring (101) and at one end of the second positioning groove (302) near the axis of the inner ring (102). The connecting reinforcement assembly (2) includes a connecting plate (201) disposed between two upper and lower gasket bodies (1). A first movable groove (202) is formed at equal angles on the connecting plate (201), and a second movable groove (203) is formed at equal angles on the connecting plate (201). Positioning blocks (204) are installed on the inner side of the first movable groove (202) and the inner side of the second movable groove (203). The two ends of the positioning blocks (204) are located on the upper and lower sides of the connecting plate (201), respectively. Two locking blocks (205) are symmetrically installed on the side of the positioning blocks (204) near the axis of the connecting plate (201). The first movable groove (202) and the second movable groove (205) are located on the same straight line. A connecting groove (206) is provided between the movable grooves (203). A connecting rod (207) is provided inside the connecting groove (206). The two ends of the connecting rod (207) are fixedly connected to two positioning blocks (204) respectively. A screw barrel (208) is installed at the end of the first movable groove (202) away from the second movable groove (203). A screw rod (209) is installed in the internal thread of the screw barrel (208). A limit rotating block (210) is fixedly installed at one end of the screw rod (209). The limit rotating block (210) is rotatably installed inside the limit rotating groove (211). The limit rotating groove (211) is opened on the positioning block (204) located inside the first movable groove (202).

2. The toothed PTFE-filled metal spiral wound gasket structure according to claim 1, characterized in that: The first movable slot (202) corresponds one-to-one with the first positioning slot (301), and the second movable slot (203) corresponds one-to-one with the second positioning slot (302).

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