CN214368496U

CN214368496U - Flange sealing member for PTFE (Polytetrafluoroethylene) pipe

Info

Publication number: CN214368496U
Application number: CN202022433104.5U
Authority: CN
Inventors: 王健; 乔忠强
Original assignee: Jiangsu Xiangjian New Material Technology Co ltd
Current assignee: Jiangsu Xiangjian New Material Technology Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-10-08
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a flange sealing member for PTFE pipe relates to PTFE pipe seal technical field, only uses the bolt to come fixed connection for solving current flange sealing member, and sealed effect is not good, and long-term the use leads to contact surface wearing and tearing serious, also can cause the problem of sealed not tight, pipeline leakage simultaneously. The connecting pipe is installed at the top of last ring flange, the connecting pipe is installed down to the bottom of lower ring flange, the bottom of going up the ring flange is provided with the sealing washer, the top of lower ring flange is provided with the sealing washer, the inside of going up the connecting pipe is provided with the through-hole, the inside of connecting pipe is provided with down the through-hole down, all be provided with fixed screw all around of going up the ring flange bottom, and fixed screw is provided with eight, the buffer block is installed to one side of fixed screw, and the buffer block is provided with eight, install the slipmat on the inner wall of going up the through-hole, the bottom of going up the through-hole is provided with threaded connection, and goes up the through-hole and passes through threaded connection and last ring flange threaded connection.

Description

Flange sealing member for PTFE (Polytetrafluoroethylene) pipe

Technical Field

The utility model relates to a PTFE manages sealed technical field, specifically is a flange sealing member for PTFE pipe.

Background

The Polytetrafluoroethylene (PTFE) has excellent chemical stability, can resist strong acid, strong alkali and strong oxidant, and does not react with various organic solvents. The PTFE has a wide application temperature range, can be applied to minus 180 ℃ to 250 ℃ for a long time under normal pressure, and has small change of mechanical properties after being treated for 1000 hours at a high temperature of 250 ℃. PTFE has very low friction factor, is a good antifriction and self-lubricating material, and has the static friction coefficient smaller than the dynamic friction coefficient, so that the PTFE has the advantages of small starting resistance and smooth running when being used for manufacturing bearings. Since PTFE is non-polar, heat resistant and non-hygroscopic, it is also an excellent electrical insulating material. Also has excellent aging resistance, non-stickiness and non-inflammability. The special-shaped material and parts made of polytetrafluoroethylene, such as bars, pipes, films, bearings, gaskets, valves and the like, are widely applied to the fields of machinery, chemical engineering, aviation, electrical and electronic, national defense industry, advanced science and technology, medical sanitation, electrical insulation and the like.

However, the existing flange sealing element is only fixedly connected by bolts, the sealing effect is poor, the contact surface is seriously abraded after long-term use, and meanwhile, the problems of poor sealing and pipeline leakage are caused; thus, the existing requirements are not met, and a flange seal for PTFE pipes is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flange sealing member for PTFE pipe to solve the current flange sealing member that proposes in the above-mentioned background art and only use the bolt to come fixed connection, sealed effect is not good, and long-term the use leads to contact surface wearing and tearing serious, also can cause sealed not tight, the problem of pipeline leakage simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a flange sealing element for PTFE pipes comprises an upper flange plate and a lower flange plate, wherein an upper connecting pipe is installed at the top of the upper flange plate, a lower connecting pipe is installed at the bottom of the lower flange plate, a sealing ring is arranged at the bottom of the upper flange plate, a sealing ring is arranged at the top of the lower flange plate, an upper through hole is formed in the upper connecting pipe, a lower through hole is formed in the lower connecting pipe, fixing screw holes are formed in the periphery of the bottom of the upper flange plate, eight fixing screw holes are formed in each fixing screw hole, a buffer block is installed on one side of each fixing screw hole and provided with eight buffer blocks, an anti-skid pad is installed on the inner wall of each upper through hole, a threaded joint is arranged at the bottom of each upper through hole, the upper through holes are in threaded connection with the upper flange plate through threaded joints, the anti-skid pads are installed on the inner wall of the lower through holes, and threaded joints are arranged at the tops of the lower through holes, and the lower through hole is in threaded connection with the upper flange plate through a threaded joint, an inner sealing ring is arranged inside the upper flange plate, and an inner sealing ring is arranged inside the lower flange plate.

Preferably, all be provided with fixed screw around the lower flange bottom, and fixed screw is provided with eight, the buffer block is installed to one side of fixed screw, and the buffer block is provided with eight.

Preferably, the fixing screw holes are provided with fixing screws, the gaskets are arranged on one sides of the fixing screws, the tops of the fixing screws are provided with fixing nuts, and the upper flange plate is in threaded connection with the lower flange plate through the fixing screws.

Preferably, the upper end and the lower end of the upper flange plate are both provided with a limiting ring, a limiting groove is formed in the limiting ring, the upper end and the lower end of the lower flange plate are both provided with a limiting ring, and a limiting bulge is formed in the limiting ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the buffer block on the ring flange, the device that causes when avoiding long-time oppression damages, extension fixture's life to the outside of ring flange is provided with the sealing washer, and the inboard seals the circle of installing, and the sealed effect of dual seal reinforcing has been avoided long-term use to lead to contact surface wearing and tearing serious, causes simultaneously sealed not tight, the problem of pipeline leakage, the outside of ring flange sets up the stability when spacing arch and spacing recess's joint reinforcing backing ring installation.

2. Fixing nut is installed through the bottom at set screw to set up the gasket with the contact position of ring flange and install the reinforcement, simple structure promotes flange integral erection intensity, uses more firmly, and the sealing member adopts polytetrafluoroethylene's material simultaneously, has excellent chemical stability, can be able to bear or endure all strong acid, strong base, strong oxidizer, also do not take place the effect with various organic solvent, heat-resisting and not absorbing water, still have good ageing resistance, stickness and incombustibility.

Drawings

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic view of the front view of the internal structure of the present invention;

fig. 3 is a schematic view of the top view of the internal structure of the present invention;

in the figure: 1. an upper flange plate; 2. a lower flange plate; 3. an upper through hole; 4. a lower through hole; 5. a set screw; 6. a gasket; 7. fixing a nut; 8. fixing screw holes; 9. a buffer block; 10. an inner sealing ring; 11. A limiting ring; 12. a limiting groove; 13. an upper connecting pipe; 14. a lower connecting pipe; 15. a seal ring; 16. A threaded joint; 17. a non-slip mat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a flange sealing element for PTFE (polytetrafluoroethylene) pipes comprises an upper flange plate 1 and a lower flange plate 2, wherein an upper connecting pipe 13 is arranged at the top of the upper flange plate 1, a lower connecting pipe 14 is arranged at the bottom of the lower flange plate 2, a sealing ring 15 is arranged at the bottom of the upper flange plate 1, a sealing ring 15 is arranged at the top of the lower flange plate 2, an upper through hole 3 is arranged inside the upper connecting pipe 13, a lower through hole 4 is arranged inside the lower connecting pipe 14, fixing screw holes 8 are formed in the periphery of the bottom of the upper flange plate 1, eight fixing screw holes 8 are formed in the fixing screw holes 8, a buffer block 9 is arranged on one side of each fixing screw hole 8, eight buffer blocks 9 are arranged, an anti-skid pad 17 is arranged on the inner wall of the upper through hole 3, a threaded joint 16 is arranged at the bottom of the upper through hole 3, the upper through hole 3 is in threaded connection with the upper flange plate 1 through the threaded joint 16, the anti-skid pad 17 is arranged on the inner wall of the lower through hole 4, the top of the lower through hole 4 is provided with the threaded joint 16, and lower through-hole 4 passes through screwed joint 16 and upper flange 1 threaded connection, and the internally mounted of upper flange 1 has interior sealing washer 10, and the internally mounted of lower flange 2 has interior sealing washer 10, and the ring flange passes fixed screw 8 through set screw 5 and carries out the effect that fixed connection carries out, and sealing washer 15 and the sealed effect of 10 double seal reinforcing seal have avoided long-term use to lead to the contact surface wearing and tearing serious, cause simultaneously sealed not tight, the problem of pipeline leakage.

Further, all be provided with fixed screw 8 around 2 bottoms of lower flange dish, and fixed screw 8 is provided with eight, and buffer block 9 is installed to one side of fixed screw 8, and buffer block 9 is provided with eight, and the device that causes when buffer block 9 avoids long-time oppression damages, extension means's life.

Further, install set screw 5 on the fixed screw hole 8, gasket 6 is installed to one side of set screw 5, and fixation nut 7 is installed at set screw 5's top, and goes up ring flange 1 through set

screw

5 and 2 threaded connection of lower ring flange, sets up gasket 6 and fixation nut 7 and install the reinforcement, and simple structure promotes flange integral erection intensity, uses more firmly.

Further, the upper end and the lower end of the upper flange plate 1 are provided with limiting rings 11, limiting grooves 12 are formed in the limiting rings 11, the upper end and the lower end of the lower flange plate 2 are provided with the limiting rings 11, limiting protrusions are arranged in the limiting rings 11, and the clamping connection of the limiting protrusions and the limiting grooves 12 is used for enhancing the stability of the cushion ring during installation.

The working principle is as follows: when the gasket is used, the limiting protrusion and the limiting groove 12 are firstly clamped, the stability of the gasket during installation is enhanced, the gasket is connected through the fixing screw 5, the fixing nut 7 is installed at the bottom of the fixing screw 5, and the gasket 6 is arranged at the contact position of the fixing screw 5 for installation and reinforcement, the structure is simple, the overall installation strength of the flange is improved, the use is more stable, meanwhile, the sealing element is made of polytetrafluoroethylene, the gasket has excellent chemical stability, can resist all strong acid, strong alkali and strong oxidant, does not react with various organic solvents, is heat-resistant and does not absorb water, has excellent aging resistance, adhesion and incombustibility, the buffer block 9 is arranged on the flange, the damage of the device caused by long-time compression is avoided, the service life of the device is prolonged, the sealing ring 15 is arranged on the outer side of the flange, the inner sealing ring 10 is installed on the inner side of the flange, and the sealing effect is enhanced by double sealing, the problems of severe abrasion of the contact surface, poor sealing and pipeline leakage caused by long-term use are avoided.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flange seal spare for PTFE pipe, includes last ring flange (1) and lower ring flange (2), its characterized in that: an upper connecting pipe (13) is installed at the top of the upper flange plate (1), a lower connecting pipe (14) is installed at the bottom of the lower flange plate (2), a sealing ring (15) is arranged at the bottom of the upper flange plate (1), the sealing ring (15) is arranged at the top of the lower flange plate (2), an upper through hole (3) is formed in the upper connecting pipe (13), a lower through hole (4) is formed in the lower connecting pipe (14), fixing screw holes (8) are formed in the periphery of the bottom of the upper flange plate (1), eight fixing screw holes (8) are formed in the periphery of the bottom of the upper flange plate (1), a buffer block (9) is installed on one side of each fixing screw hole (8), the buffer blocks (9) are eight, an anti-skid pad (17) is installed on the inner wall of the upper through hole (3), a threaded joint (16) is arranged at the bottom of the upper through hole (3), and the upper through hole (3) is in threaded connection with the upper flange plate (1) through the threaded joint (16), install slipmat (17) on the inner wall of lower through-hole (4), the top of lower through-hole (4) is provided with screwed joint (16), and through-hole (4) pass through screwed joint (16) and last ring flange (1) threaded connection down, the internally mounted of going up ring flange (1) has interior sealing washer (10), the internally mounted of lower ring flange (2) has interior sealing washer (10).

2. The flange seal for a PTFE tube according to claim 1, wherein: all be provided with fixed screw (8) around lower flange dish (2) bottom, and fixed screw (8) are provided with eight, buffer block (9) are installed to one side of fixed screw (8), and buffer block (9) are provided with eight.

3. The flange seal for a PTFE tube according to claim 2, wherein: install set screw (5) on fixed screw (8), gasket (6) are installed to one side of set screw (5), fixation nut (7) are installed at the top of set screw (5), and go up ring flange (1) through set screw (5) and lower ring flange (2) threaded connection.

4. The flange seal for a PTFE tube according to claim 1, wherein: the upper flange plate and the lower flange plate are characterized in that limiting rings (11) are arranged at the upper end and the lower end of the upper flange plate (1), limiting grooves (12) are formed in the limiting rings (11), the upper end and the lower end of the lower flange plate (2) are provided with the limiting rings (11), and limiting bulges are arranged in the limiting rings (11).