Corrosion-resistant polytetrafluoroethylene gasket with composite structure

Abstract

The corrosion-resistant polytetrafluoroethylene gasket with the composite structure comprises a polytetrafluoroethylene gasket body, metal sheets are installed on the upper side and the lower side of the polytetrafluoroethylene gasket body, and positioning grooves are formed in the upper side and the lower side of the polytetrafluoroethylene gasket body at equal angles. Positioning blocks are mounted on the sides, close to the polytetrafluoroethylene gaskets, of the metal sheets at equal angles, the positioning blocks are clamped into the positioning grooves, mounting plates are mounted on the outer sides of the metal sheets at equal angles, and the mounting plates on the upper metal sheet and the lower metal sheet are in one-to-one correspondence; in the working process, the side groove is formed in the side, close to the polytetrafluoroethylene gasket, of the fixing sleeve, the side plate is installed on the side, close to the polytetrafluoroethylene gasket, of the insertion plate, and the side plate is flush with the fixing sleeve, so that when the polytetrafluoroethylene gasket is pressed, the polytetrafluoroethylene gasket is not prone to falling off. The side wall of the fixing sleeve and the side wall of the side plate can play a consistent role in preventing deformation of the polytetrafluoroethylene gasket, and the anti-deformation effect of the polytetrafluoroethylene gasket is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polytetrafluoroethylene gaskets, in particular to a corrosion-resistant polytetrafluoroethylene gasket with a composite structure. Background Art

[0002] According to the patent document with the authorization announcement number "CN214743285U" and the invention name "A polytetrafluoroethylene composite sealing gasket", its description states: When in use, the polytetrafluoroethylene ring is sleeved at the interface of the pipe, and the polytetrafluoroethylene ring is in sealing contact with the outer edge of the pipe. When the two ring bodies are squeezed, the two ring bodies approach each other, the polytetrafluoroethylene ring expands under pressure, the slider slides in the slide groove, and the overlapping part of the vertical parts of the upper rod and the lower rod increases. Under the blocking effect of the vertical parts of the upper rod and the lower rod, the deformation of the polytetrafluoroethylene ring toward the outside of the ring body is limited, thereby preventing the polytetrafluoroethylene ring from being damaged due to large deformation after being compressed. When the two ring bodies approach each other, the wedge ring moves in the wedge ring groove, and the wedge ring can make the polytetrafluoroethylene ring part on its inner side squeeze the outer edge of the pipe, thereby making the polytetrafluoroethylene ring have better sealing performance on the pipe. Under the cooperation of the two ring bodies, the upper rod, the lower rod, the wedge-shaped ring groove, the wedge-shaped ring, the ring groove and the convex ring, the polytetrafluoroethylene ring can be stabilized between the two ring bodies. The sealing gasket has better stability during use, but still has the following defects:

[0003] When the polytetrafluoroethylene ring is connected to the two ring bodies, the connection is performed by clamping through the wedge-shaped ring groove and the wedge-shaped ring. The connection strength is poor, and the polytetrafluoroethylene ring may be separated from the two ring bodies and fall off. 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 corrosion-resistant polytetrafluoroethylene gasket with a composite structure, which effectively solves the problem of poor connection strength when a polytetrafluoroethylene ring is connected to two ring bodies.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant polytetrafluoroethylene gasket with a composite structure, comprising a polytetrafluoroethylene gasket, wherein metal sheets are installed on the upper and lower sides of the polytetrafluoroethylene gasket, positioning grooves are provided at equal angles on the upper and lower sides of the polytetrafluoroethylene gasket, a positioning block is installed at equal angles on one side of the metal sheet close to the polytetrafluoroethylene gasket, the positioning block is inserted into the inside of the positioning groove, a mounting plate is installed at equal angles on the outer side of the metal sheet, the mounting plates on the upper and lower metal sheets correspond to each other one by one, a circumferential limit assembly is provided between the two mounting plates, and the circumferential limit assembly is provided at equal angles on the circumference of the polytetrafluoroethylene gasket.

[0006] Preferably, the circumferential limiting assembly includes a fixed sleeve and an insert plate, the fixed sleeve is fixedly mounted on the bottom end of the upper mounting plate, the insert plate is fixedly mounted on the top end of the lower mounting plate, and the insert plate is slidably mounted inside the fixed sleeve.

[0007] Preferably, a side groove is formed on the side of the fixing sleeve close to the polytetrafluoroethylene gasket, a side plate is fixedly installed on the side of the insert plate close to the polytetrafluoroethylene gasket, a side of the fixing sleeve close to the metal sheet is flush with a side of the side plate close to the polytetrafluoroethylene gasket, and a side of the fixing sleeve close to the polytetrafluoroethylene gasket and a side of the side plate close to the polytetrafluoroethylene gasket are in contact with the outer wall of the polytetrafluoroethylene gasket.

[0008] Preferably, a limiting groove is provided on the side wall of the plug plate, the bottom end of the limiting groove passes through to the bottom of the plug plate, a screw barrel is fixedly installed on one side of the fixing sleeve, a limiting screw is installed on the internal thread of the screw barrel, one end of the limiting screw is inserted into the interior of the limiting groove, and the outer wall of the limiting screw is in contact with the inner top wall of the limiting groove.

[0009] Preferably, a fixed box is fixedly installed on one side of the fixed sleeve close to the screw barrel, the fixed box is located above the screw barrel, a movable block is slidably installed inside the fixed box, a connecting rod is symmetrically installed on the bottom end of the movable block, the connecting rod passes through the bottom of the fixed box, a baffle is fixedly installed on the bottom end of the connecting rod, and the baffle is in contact with the end of the limit screw away from the plug plate.

[0010] Preferably, a spring is symmetrically mounted on the top of the movable block, and the top of the spring is fixedly connected to the inner top wall of the fixed box.

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

[0012] During operation, a side groove is provided on the side of the fixed sleeve close to the polytetrafluoroethylene gasket, and a side plate is installed on the side of the plug plate close to the polytetrafluoroethylene gasket. The side plate is flush with the fixed sleeve, so that when the polytetrafluoroethylene gasket is under pressure, the side wall of the fixed sleeve and the side wall of the side plate can play a consistent role in blocking deformation of the polytetrafluoroethylene gasket, thereby improving the anti-deformation effect of the polytetrafluoroethylene gasket.

[0013] During work, after the set plug plate is inserted into the fixed sleeve, the limiting screw is screwed into the screw barrel so that the limiting screw is inserted into the limiting groove to limit the plug plate, which is convenient for the installation of the polytetrafluoroethylene gasket and the metal sheet. At the same time, the baffle limits the end of the limiting screw to prevent the limiting screw from loosening and improve the installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the structure of a corrosion-resistant polytetrafluoroethylene gasket with a composite structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the polytetrafluoroethylene gasket and the metal sheet of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing sleeve and the plug plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the circumferential limit assembly of the utility model.

[0020] In the figure: 1. polytetrafluoroethylene gasket; 2. metal sheet; 3. positioning groove; 4. positioning block; 5. mounting plate; 6. circumferential limit assembly; 601. fixing sleeve; 602. plug-in plate; 603. side groove; 604. side plate; 605. limit groove; 606. screw barrel; 607. limit screw; 608. fixing box; 609. movable block; 610. connecting rod; 611. baffle; 612. spring. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1, by Figure 1-4 The utility model relates to a corrosion-resistant polytetrafluoroethylene gasket with a composite structure, comprising a polytetrafluoroethylene gasket 1, metal sheets 2 are installed on the upper and lower sides of the polytetrafluoroethylene gasket 1, positioning grooves 3 are opened at equal angles on the upper and lower sides of the polytetrafluoroethylene gasket 1, a positioning block 4 is installed at equal angles on the side of the metal sheet 2 close to the polytetrafluoroethylene gasket 1, the positioning block 4 is inserted into the interior of the positioning groove 3, and a mounting plate 5 is installed at equal angles on the outer side of the metal sheet 2, the mounting plates 5 on the upper and lower metal sheets 2 correspond to each other one by one, a circumferential limit assembly 6 is provided between the two mounting plates 5, and the circumferential limit assembly 6 is arranged at equal angles on the circumference of the polytetrafluoroethylene gasket 1.

[0023] The circumferential limit assembly 6 includes a fixed sleeve 601 and an insert plate 602. The fixed sleeve 601 is fixedly installed at the bottom end of the upper mounting plate 5. The insert plate 602 is fixedly installed at the top of the lower mounting plate 5. The insert plate 602 is slidably installed inside the fixed sleeve 601. A side groove 603 is provided on the side of the fixed sleeve 601 close to the polytetrafluoroethylene gasket 1. A side plate 604 is fixedly installed on the side of the insert plate 602 close to the polytetrafluoroethylene gasket 1. The side of the fixed sleeve 601 close to the metal sheet 2 is flush with the side of the side plate 604 close to the polytetrafluoroethylene gasket 1. The side of the fixed sleeve 601 close to the polytetrafluoroethylene gasket 1 and the side plate 604 close to the polytetrafluoroethylene gasket 1 are flush. One side of the polytetrafluoroethylene gasket 1 is in contact with the outer wall of the polytetrafluoroethylene gasket 1, a side groove 603 is provided on the side of the fixing sleeve 601 close to the polytetrafluoroethylene gasket 1, a side plate 604 is installed on the side of the plug plate 602 close to the polytetrafluoroethylene gasket 1, and the side plate 604 is flush with the fixing sleeve 601, so that when the polytetrafluoroethylene gasket 1 is under pressure, the side wall of the fixing sleeve 601 and the side wall of the side plate 604 can play a consistent role in blocking deformation of the polytetrafluoroethylene gasket 1, thereby improving the anti-deformation effect of the polytetrafluoroethylene gasket 1, and a limiting groove 605 is provided on the side wall of the plug plate 602, and the bottom end of the limiting groove 605 passes through the bottom of the plug plate 602 A screw barrel 606 is fixedly installed on one side of the fixed sleeve 601, and a limiting screw 607 is installed on the internal thread of the screw barrel 606. One end of the limiting screw 607 is inserted into the interior of the limiting groove 605, and the outer wall of the limiting screw 607 contacts the inner top wall of the limiting groove 605. A fixed box 608 is fixedly installed on the side of the fixed sleeve 601 close to the screw barrel 606. The fixed box 608 is located above the screw barrel 606. A movable block 609 is slidably installed inside the fixed box 608. A connecting rod 610 is symmetrically installed at the bottom end of the movable block 609. The connecting rod 610 penetrates to the bottom of the fixed box 608, and the bottom end of the connecting rod 610 is fixed A baffle 611 is fixedly installed, and the baffle 611 contacts the end of the limiting screw 607 away from the plug plate 602. A spring 612 is symmetrically installed on the top of the movable block 609, and the top of the spring 612 is fixedly connected to the inner top wall of the fixed box 608. After the plug plate 602 is inserted into the fixed sleeve 601, the limiting screw 607 is screwed into the screw barrel 606, so that the limiting screw 607 is inserted into the limiting groove 605, and the plug plate 602 is limited, which facilitates the installation of the polytetrafluoroethylene gasket 1 and the metal sheet 2. At the same time, the baffle 611 limits the end of the limiting screw 607 to prevent the limiting screw 607 from loosening and improve the installation stability.

[0024] Working principle: When working, during installation, the positioning blocks 4 on the upper and lower metal sheets 2 are correspondingly inserted into the positioning grooves 3 on the polytetrafluoroethylene gasket 1, so that the plug plate 602 is inserted into the interior of the fixing sleeve 601, and then the baffle 611 is pulled upward, and the limiting screw 607 is screwed into the screw barrel 606 until the end of the limiting screw 607 is inserted into the limiting groove 605, so as to limit the plug plate 602, and finally the baffle 611 is loosened, so that the baffle 611 limits the outer end of the limiting screw 607 to prevent the limiting screw 607 from loosening;

[0025] Since a side groove 603 is provided on the side of the fixing sleeve 601 close to the polytetrafluoroethylene gasket 1, a side plate 604 is installed on the side of the plug plate 602 close to the polytetrafluoroethylene gasket 1, and the side plate 604 is flush with the fixing sleeve 601, when the polytetrafluoroethylene gasket 1 is under pressure, the fixing sleeve 601 and the side plate 604 can play a consistent role in blocking deformation of the polytetrafluoroethylene gasket 1, thereby improving the anti-deformation effect of the polytetrafluoroethylene gasket 1.

Claims

1. A corrosion-resistant polytetrafluoroethylene gasket with a composite structure, comprising a polytetrafluoroethylene gasket (1), characterized in that: The upper and lower sides of the polytetrafluoroethylene gasket (1) are both provided with metal sheets (2), the upper and lower sides of the polytetrafluoroethylene gasket (1) are provided with positioning grooves (3) at equal angles, a positioning block (4) is installed at equal angles on the side of the metal sheet (2) close to the polytetrafluoroethylene gasket (1), the positioning block (4) is inserted into the interior of the positioning groove (3), a mounting plate (5) is installed at equal angles on the outer side of the metal sheet (2), the mounting plates (5) on the upper and lower metal sheets (2) correspond to each other one by one, a circumferential limit assembly (6) is provided between the two mounting plates (5), and the circumferential limit assembly (6) is arranged at equal angles on the circumference of the polytetrafluoroethylene gasket (1).

2. The corrosion-resistant polytetrafluoroethylene gasket with a composite structure according to claim 1, characterized in that: The circumferential limiting assembly (6) comprises a fixing sleeve (601) and an inserting plate (602); the fixing sleeve (601) is fixedly mounted on the bottom end of the upper mounting plate (5); the inserting plate (602) is fixedly mounted on the top end of the lower mounting plate (5); and the inserting plate (602) is slidably mounted inside the fixing sleeve (601).

3. The corrosion-resistant polytetrafluoroethylene gasket with a composite structure according to claim 2, characterized in that: A side groove (603) is formed on the side of the fixing sleeve (601) close to the polytetrafluoroethylene gasket (1); a side plate (604) is fixedly mounted on the side of the plug plate (602) close to the polytetrafluoroethylene gasket (1); a side of the fixing sleeve (601) close to the metal sheet (2) is flush with a side of the side plate (604) close to the polytetrafluoroethylene gasket (1); and a side of the fixing sleeve (601) close to the polytetrafluoroethylene gasket (1) and a side of the side plate (604) close to the polytetrafluoroethylene gasket (1) are in contact with the outer wall of the polytetrafluoroethylene gasket (1).

4. The corrosion-resistant polytetrafluoroethylene gasket with a composite structure according to claim 2, characterized in that: A limiting groove (605) is provided on the side wall of the inserting plate (602), and the bottom end of the limiting groove (605) extends to the bottom of the inserting plate (602). A screw barrel (606) is fixedly installed on one side of the fixing sleeve (601), and a limiting screw rod (607) is installed on the internal thread of the screw barrel (606). One end of the limiting screw rod (607) is inserted into the interior of the limiting groove (605), and the outer wall of the limiting screw rod (607) contacts the inner top wall of the limiting groove (605).

5. The corrosion-resistant polytetrafluoroethylene gasket with a composite structure according to claim 4, characterized in that: A fixed box (608) is fixedly installed on one side of the fixed sleeve (601) close to the screw barrel (606), and the fixed box (608) is located above the screw barrel (606). A movable block (609) is slidably installed inside the fixed box (608), and a connecting rod (610) is symmetrically installed at the bottom end of the movable block (609). The connecting rod (610) passes through the bottom of the fixed box (608), and a baffle (611) is fixedly installed at the bottom end of the connecting rod (610), and the baffle (611) contacts the end of the limiting screw (607) away from the plug plate (602).

6. The corrosion-resistant polytetrafluoroethylene gasket with a composite structure according to claim 5, characterized in that: A spring (612) is symmetrically mounted on the top of the movable block (609), and the top of the spring (612) is fixedly connected to the inner top wall of the fixed box (608).

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