A polytetrafluoroethylene gasket
By designing a polytetrafluoroethylene gasket including a gasket ring body, a fixed end, a connecting groove, a connecting ring, a limit ring, a driving ring body and a convex ring, the problem of the reduction in the sealing properties of the polytetrafluoroethylene sealing gasket in the prior art after long-term use is solved, and better sealing and service life are achieved.
Patent Information
- Application Number
- CN202421314568.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-11
AI Technical Summary
After long-term use, existing polytetrafluoroethylene sealing gaskets are difficult to maintain a good seal to the connection, which easily leads to fluid leakage.
A polytetrafluoroethylene gasket is designed, including a gasket ring body, a fixed end, a connecting groove, a connecting ring, a limit ring, a driving ring body and a convex ring. By extruding the driving ring body, the convex ring is inserted into the ring groove of the polytetrafluoroethylene ring body, which drives the polytetrafluoroethylene ring body to expand, fills the gap to improve sealing, and achieves shock absorption effect through the buffer spring.
It effectively improves the sealing of the gasket ring body, extends the service life, and avoids damage to the drive ring body caused by vibration.
Smart Images
Figure CN222702545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polytetrafluoroethylene gaskets, in particular to a polytetrafluoroethylene gasket. Background Art
[0002] PTFE sealing gaskets are widely used. They are flat gaskets, V-shaped gaskets, piston rings, ball valve gaskets, etc. made of PTFE rods, tubes or plates through mechanical turning or cutting. They can effectively solve the leakage problems of various equipments. They are made of various plastics into gaskets, washers, nuts, screws, shafts, stampings, special-shaped parts and other products.
[0003] The current polytetrafluoroethylene gasket is a component used to seal when two objects are connected. Long-term use of the existing polytetrafluoroethylene sealing gasket is not conducive to a good sealing of the connection and is prone to fluid leakage. Utility Model Content
[0004] The purpose of the utility model is to provide a polytetrafluoroethylene gasket to solve the problem that the current polytetrafluoroethylene gasket is a component used for sealing when connecting two objects, and the long-term use of the existing polytetrafluoroethylene sealing gasket is not conducive to a good sealing of the connection and is prone to cause fluid leakage.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A polytetrafluoroethylene gasket comprises a gasket ring body, wherein fixed ends are symmetrically provided on the upper and lower sides of the gasket ring body, a connecting groove is provided on the fixed end, a connecting ring is slidably connected in the connecting groove, a limiting ring is provided at one end of the connecting ring, a sliding groove extending into the connecting ring is provided on the limiting ring, a driving ring body is provided at the other end of the connecting ring, a convex ring is coaxially provided on the driving ring body outside the connecting ring, a diameter of the convex ring gradually decreases from one end close to the driving ring body to the end away from the driving ring body, a polytetrafluoroethylene ring body is coaxially provided on the gasket ring body outside the fixed end, and a ring groove corresponding to the convex ring is provided on the polytetrafluoroethylene ring body.
[0007] As a preferred technical solution of the utility model, a limit groove capable of allowing the limit ring to move up and down is opened in the fixed end, the limit groove is connected to the connecting groove, and a plurality of sliding rods evenly distributed around and one end of which is inserted into the sliding groove are provided on the bottom end face of the limit groove.
[0008] As a preferred technical solution of the utility model, a buffer spring is sleeved on the outer side of the slide rod between the limiting ring and the limiting groove.
[0009] As a preferred technical solution of the utility model, the driving ring body, the limiting ring, the connecting ring and the convex ring are an integrally formed structure.
[0010] As a preferred technical solution of the utility model, the size of the convex ring is larger than the size of the ring groove.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] When in use, the object squeezes the driving ring bodies on both sides of the gasket ring body, causing the two driving ring bodies to move toward the gasket ring body, and the convex ring on the driving ring body is inserted into the ring groove in the polytetrafluoroethylene ring body. The object applies different forces to the two driving ring bodies, and the convex ring is inserted into the ring groove to drive the polytetrafluoroethylene ring body to expand and deform to different degrees under pressure. The expanded part of the polytetrafluoroethylene ring body fills the gap between the object and the gasket ring body, thereby improving the sealing of the gasket ring body. At the same time, when the object is in compression contact with the driving ring body, the two driving ring bodies use the elastic reset function of the buffer spring to make the limit ring drive the two driving ring bodies to be compressed and loosened as the object continues to vibrate, thereby buffering and damping the two driving ring bodies, avoiding vibration of the object that causes damage and deformation of the two driving ring bodies, and greatly improving the service life of the gasket ring body. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the gasket ring body of the utility model;
[0015] Figure 3 It is a schematic structural diagram of the polytetrafluoroethylene ring body of the utility model;
[0016] Figure 4 This is a connection diagram of the driving ring body, the limiting ring, the connecting ring and the convex ring of the utility model;
[0017] In the figure: 1, gasket ring body; 2, fixed end; 3, driving ring body; 4, connecting groove; 5, convex ring; 6, polytetrafluoroethylene ring body; 7, limiting groove; 8, ring groove; 9, limiting ring; 10, sliding rod; 11, buffer spring; 12, sliding groove. DETAILED DESCRIPTION
[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] Example
[0021] Combination Figure 1-4 As shown, a polytetrafluoroethylene gasket comprises a gasket ring body 1 with a hollow structure inside, the gasket ring body 1 is symmetrically provided with fixed ends 2 on the upper and lower sides, the fixed ends 2 are provided with connecting grooves 4, a connecting ring is slidably connected in the connecting groove 4, one end of the connecting ring is provided with a limiting ring 9, the limiting ring 9 is provided with a sliding groove 12 extending into the connecting ring, the other end of the connecting ring is provided with a driving ring body 3, the driving ring body 3 outside the connecting ring is coaxially provided with a convex ring 5, the diameter of the convex ring 5 is from the end close to the driving ring body 3 It gradually decreases toward the end away from the driving ring body 3. A polytetrafluoroethylene ring body 6 is coaxially provided on the gasket ring body 1 outside the fixed end 2. A ring groove 8 corresponding to the convex ring 5 is formed on the polytetrafluoroethylene ring body 6. The size of the ring groove 8 is smaller than that of the convex ring 5. Therefore, when the convex ring 5 is subjected to different degrees of pressure and inserted into the ring groove 8, the polytetrafluoroethylene ring body 6 is squeezed and expanded to different degrees. The expanded part of the polytetrafluoroethylene ring body 6 can fill the gap between the gasket ring body 1 and the object, thereby greatly improving the sealing performance.
[0022] Among them, a limit groove 7 is opened in the fixed end 2 for the limit ring 9 to move up and down. Through the setting of the limit groove 7 and the limit ring 9, the displacement of the driving ring body 3 can be limited. The limit groove 7 is connected with the connecting groove 4. A plurality of sliding rods 10 are evenly distributed around and one end of which is inserted into the sliding groove 12. Through the setting of the sliding rods 10 and the sliding groove 12, the stability of the driving ring body 3 when it moves up and down is improved.
[0023] Among them, a buffer spring 11 is sleeved on the outer side of the sliding rod 10 between the limiting ring 9 and the limiting groove 7, one end of the buffer spring 11 is connected to the bottom end face of the limiting groove 7, and the other end of the buffer spring 11 is connected to the bottom end face of the limiting ring 9. Through the setting of the buffer spring 11, it is possible to avoid the vibration generated by the object that causes damage and deformation of the two driving ring bodies 3, thereby greatly improving the service life of the gasket ring body 1.
[0024] The driving ring body 3, the limiting ring 9, the connecting ring and the convex ring 5 are an integrally formed structure, and the driving ring body 3, the limiting ring 9, the connecting ring and the convex ring 5 are made of stainless steel.
[0025] The working principle of the utility model is:
[0026] When in use, the object squeezes the driving ring bodies 3 on both sides of the gasket ring body 1, so that the two driving ring bodies 3 are displaced toward the gasket ring body 1, and the convex ring 5 on the driving ring body 3 is inserted into the ring groove 8 in the polytetrafluoroethylene ring body 6. The object applies different forces to the two driving ring bodies 3. The convex ring 5 is inserted into the ring groove 8 to drive the polytetrafluoroethylene ring body 6 to be compressed and deformed to different degrees. The expanded part of the polytetrafluoroethylene ring body 6 fills the gap between the object and the gasket ring body 1, thereby improving the sealing performance of the gasket ring body 1. At the same time, when the object is in compression contact with the driving ring body 3, the two driving ring bodies 3 are elastically reset by the buffer spring 11, so that the limit ring 9 drives the two driving ring bodies 3 to be compressed and loosened as the object vibrates continuously, thereby buffering and damping the two driving ring bodies 3, avoiding vibration of the object that causes the two driving ring bodies 3 to be damaged and deformed, and greatly improving the service life of the gasket ring body 1.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A polytetrafluoroethylene gasket, comprising a gasket ring body (1), characterized in that: The gasket ring body (1) is symmetrically provided with fixed ends (2) on the upper and lower sides, and a connecting groove (4) is provided on the fixed end (2). A connecting ring is slidably connected in the connecting groove (4). A limiting ring (9) is provided at one end of the connecting ring, and a sliding groove (12) extending into the connecting ring is provided on the limiting ring (9). A driving ring body (3) is provided at the other end of the connecting ring. A convex ring (5) is coaxially provided on the driving ring body (3) outside the connecting ring, and the diameter of the convex ring (5) gradually decreases from one end close to the driving ring body (3) to one end away from the driving ring body (3). A polytetrafluoroethylene ring body (6) is coaxially provided on the gasket ring body (1) outside the fixed end (2), and a ring groove (8) corresponding to the convex ring (5) is provided on the polytetrafluoroethylene ring body (6).
2. A polytetrafluoroethylene gasket according to claim 1, characterized in that: A limiting groove (7) capable of allowing the limiting ring (9) to move up and down is provided in the fixed end (2); the limiting groove (7) is connected to the connecting groove (4); and a plurality of sliding rods (10) evenly distributed around and one end of which is inserted into the sliding groove (12) are provided on the bottom end surface of the limiting groove (7).
3. A polytetrafluoroethylene gasket according to claim 2, characterized in that: A buffer spring (11) is sleeved on the outer side of the slide rod (10) between the limiting ring (9) and the limiting groove (7).
4. A polytetrafluoroethylene gasket according to claim 1, characterized in that: The driving ring body (3), the limiting ring (9), the connecting ring and the convex ring (5) are an integrally formed structure.
5. The polytetrafluoroethylene gasket according to claim 1, characterized in that: The size of the convex ring (5) is larger than the size of the annular groove (8).