CN210265866U

CN210265866U - Rubber and tetrafluoro film composite sealing element and spring assembling device

Info

Publication number: CN210265866U
Application number: CN201921272397.4U
Authority: CN
Inventors: 文浩; 文明义
Original assignee: Sichuan Taiyi High Tech Materials Co Ltd
Current assignee: Sichuan Taiyi High Tech Materials Co Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-04-07
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a rubber and PTFE film composite sealing element, which comprises a PTFE sheet and a rubber layer, wherein the center of the PTFE sheet is provided with a mounting hole, and one surface of the PTFE sheet is provided with an annular clamping groove which is coaxial with the mounting hole; the rubber layer is coated on the surface of the Teflon sheet with the clamping groove, a ring-shaped spring is coaxially arranged in the clamping groove, and the spring is contracted on the inner wall of the clamping groove. A spring assembling device for a rubber and PTFE film composite sealing element comprises an assembling body, wherein the diameter of a large-diameter end of the assembling body is larger than that of a mounting hole; a plurality of sliding grooves are arranged on the assembly body; also included are fittings. One surface of the sealing element of the utility model is a rubber layer, and the other surface is a Teflon sheet which is respectively suitable for different working conditions, thereby simultaneously meeting the requirements of different use environments; and the spring that sets up has elastic fastening effect, when satisfying the dynamic seal demand, can avoid the sealing member to become invalid, has improved the life of sealing member.

Description

Rubber and tetrafluoro film composite sealing element and spring assembling device

Technical Field

The utility model relates to a sealing member technical field, in particular to rubber and compound sealing member of tetrafluoro film and spring assembly device.

Background

In dynamic sealing, such as oil sealing, a sealing element needs to have good temperature resistance, wear resistance, pressure resistance and corrosion resistance, and simultaneously needs certain elasticity to prevent deformation and failure due to the movement of the sealing element during sealing. The existing sealing element is only made of rubber, has poor performance, is easy to lose efficacy due to movement plastic deformation of the sealing element, has short service life and single application environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a rubber and PTFE film composite sealing element and a spring assembling device, one surface of the rubber and PTFE film composite sealing element is a rubber layer, and the other surface of the rubber and PTFE film composite sealing element is a PTFE sheet which is respectively suitable for different working conditions and can simultaneously meet the requirements of different use environments; and the spring that sets up has elastic fastening effect, when satisfying the dynamic seal demand, can avoid the sealing member to become invalid, improves the life of sealing member.

The purpose of the utility model is realized through the following technical scheme:

a rubber and tetrafluoro film composite sealing element comprises a tetrafluoro sheet and a rubber layer, wherein a mounting hole is formed in the center of the tetrafluoro sheet, and an annular clamping groove coaxial with the mounting hole is formed in one surface of the tetrafluoro sheet;

the rubber layer is coated on the surface of the Teflon sheet with the clamping groove, a ring-shaped spring is coaxially arranged in the clamping groove, and the spring contracts on the inner wall of the clamping groove.

Further, the rubber layer extends to cover the side wall of the teflon sheet and the other surface of the teflon sheet, the rubber layer on the other surface of the teflon sheet is annular, and the diameter of an inner ring of the annular rubber layer is larger than that of the mounting hole.

Further, the four fluorine pieces and the rubber layer are of an integrated structure.

Furthermore, the surfaces of the rubber layers on the two sides of the tetrafluoro sheet are provided with annular bulges.

Further, the inner wall end of the clamping groove faces away from the center of the clamping groove and extends in the direction to form a clamping protrusion.

The utility model provides a spring assembly quality for rubber and tetrafluoro film composite seal spare, includes the assembly body, the assembly body is the frustum structure, the diameter of the big diameter end of assembly body is greater than the diameter of mounting hole.

Furthermore, a plurality of sliding grooves which are uniformly distributed along the radial direction of the assembly body are formed in the assembly body along the axial direction of the assembly body, and one end of each sliding groove extends to the end face of the small-diameter end of the assembly body; still include the assembly part, the assembly part includes slider and assembly piece, the slider with spout sliding fit connects, the assembly piece is connected perpendicularly the slider is close to the tip of assembly body major diameter end, the assembly piece is located outside the spout.

The utility model has the advantages that:

1) one surface of the sealing element of the utility model is a rubber layer, and the other surface is a Teflon sheet which is respectively suitable for different working conditions, thereby simultaneously meeting the requirements of different use environments; and the spring that sets up has elastic fastening effect, when satisfying the dynamic seal demand, can avoid the sealing member to become invalid, has improved the life of sealing member.

2) The spring assembly quality who sets up makes things convenient for the spring to pack into the joint groove, has avoided the artifical loaded down with trivial details and complicated assembly, packs into simply labour saving and time saving.

Drawings

FIG. 1 is a schematic view of the overall structure of a composite sealing element of rubber and PTFE film according to an embodiment of the present invention;

FIG. 2 is a front view of a rubber and PTFE film composite seal according to an embodiment of the present invention;

FIG. 3 is a back view of a rubber and PTFE film composite seal according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the rubber and PTFE film composite sealing member in the embodiment of the present invention

FIG. 5 is a view showing a state of use of a spring assembling apparatus for a rubber and PTFE film composite seal;

FIG. 6 is a top view of a spring assembly for a rubber and PTFE film composite seal;

in the figure, 1-four fluorine sheet; 2-a rubber layer; 3-mounting holes; 4-clamping groove; 5-a spring; 6-annular protrusion; 7-clamping the bulge; 8-assembly; 9-a chute; 10-an assembly member; 11-a slide block; 12-assembling the block.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a rubber and tetrafluoro film composite sealing element comprises a teflon sheet 1 and a rubber layer 2, wherein a mounting hole 3 is formed in the center of the teflon sheet 1, and an annular clamping groove 4 coaxial with the mounting hole 3 is formed in the upper surface of the teflon sheet 1;

the rubber layer 2 is coated on the upper surface of the Teflon sheet 1, a ring-shaped spring 5 is coaxially arranged in the clamping groove 4, and the spring 5 is contracted on the inner wall of the clamping groove 4.

The rubber layer 2 here covers only the surface of the teflon sheet 1 without covering the mounting hole 3. The upper surface here refers to fig. 4.

The PTFE sheet 1 is made of PTFE material, has good sealing property, high lubrication non-stick property, electrical insulation property, good ageing resistance and excellent temperature resistance, and is suitable for various occasions needing acid-base resistance and organic solvents. The spring 5 is an expansion spring.

The operation of the piston as a seal to be sealed is described herein.

The working principle is as follows: when the sealing member moves, the hole wall of the mounting hole 3 is forced to expand, and the spring 5 is forced to be further stretched. The reaction force of the spring 5 acts on the inner wall of the clamping groove 4 at the moment, the direction of the reaction force is opposite to the stress direction of the hole wall of the mounting hole 3, and the hole wall of the mounting hole 3 is tightened by the reaction force. The hole wall of the mounting hole 3 is prevented from being expanded infinitely to cause plastic deformation failure by the aid of the spring 5, and meanwhile, the hole wall of the mounting hole 3 can be tightened on a sealed piece automatically, so that sealing effect in use is guaranteed. One side of the sealing element is a rubber layer 2, and the other side of the sealing element is a tetrafluoro sheet 1, and two different materials are respectively suitable for different working conditions, so that the requirements of different use environments can be met.

One surface of the sealing element of the utility model is a rubber layer 2, and the other surface is a tetrafluoro sheet 1, which are respectively suitable for different working conditions, thereby simultaneously meeting the requirements of different use environments; and the spring 5 has elastic fastening effect, so that the failure of the sealing element can be avoided while the dynamic sealing requirement is met, and the service life of the sealing element is prolonged.

Further, the rubber layer 2 extends to cover the side wall of the teflon sheet 1 and the other surface of the teflon sheet, the rubber layer 2 on the other surface of the teflon sheet 1 is annular, and the diameter of the inner ring of the annular rubber layer 2 is larger than that of the mounting hole 3. The tetrafluoro sheet 1 and the rubber layer 2 are of an integrated structure.

So set up, guaranteed that tetrafluoro piece 1 and rubber layer 2 are the closely continuous integral structure, guarantee the user demand.

Further, the surface of the rubber layer 2 on both sides of the four-fluorine sheet 1 is provided with an annular bulge 6. The provision of the annular projection 6 provides superior sealing performance when both sides of the seal are pressed against the flat surfaces of other parts.

Further, the inner wall end of the clamping groove 4 faces away from the center of the clamping groove 4 and extends in the direction to form a clamping protrusion 7. The clamping bulge 7 can prevent the spring 5 from separating from the clamping groove 4.

A spring 5 assembling device for a rubber and PTFE film composite sealing element comprises an assembly body 8, wherein the assembly body 8 is of a frustum structure, and the diameter of the large-diameter end of the assembly body 8 is larger than that of a mounting hole 3;

a plurality of sliding grooves 9 uniformly distributed along the radial direction of the assembly body 8 are formed in the assembly body 8 along the axial direction of the assembly body, and one end of each sliding groove 9 extends to the end face of the small-diameter end of the assembly body 8; the assembling part 10 comprises a sliding block 11 and an assembling block 12, the sliding block 11 is connected with the sliding groove 9 in a sliding fit mode, the assembling block 12 is vertically connected to the end portion, close to the large-diameter end of the assembling body 8, of the sliding block 11, and the assembling block 12 is located outside the sliding groove 9.

The working principle is as follows: after the four fluorine sheets 1 and the rubber layer 2 are molded, the spring 5 needs to be sleeved. The Teflon sheet 1 and the rubber layer 2 are integrally and horizontally arranged on a table top, and the clamping groove 4 faces upwards. The assembly body 8 is coaxially arranged at the upper end of the mounting hole 3, the spring 5 is sleeved from a small-diameter end of the assembly body 8, the diameter of the small-diameter end is smaller than the initial diameter of the spring 5, and the spring 5 is axially slid along the assembly body 8 until the initial diameter of the spring 5 is the same as the outer diameter of the assembly body 8. After the spring 5 is sleeved, the sliding blocks 11 are assembled, the two sliding blocks 11 slide simultaneously, and when the sliding blocks 11 slide, the assembling blocks 12 on the sliding blocks push the spring 5 to move towards the clamping groove 4. When the lower surface of the assembling block 12 slides to be level with the bottom end of the sliding groove 9, the spring 5 is pushed into the clamping groove 4, and the spring 5 automatically tightens on the inner wall of the clamping groove 4, so that the assembling of the spring 5 is completed.

The spring assembly quality who sets up makes things convenient for the spring to pack into the joint groove, has avoided the artifical loaded down with trivial details and complicated assembly, packs into simply labour saving and time saving.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. Rubber and compound sealing member of tetrafluoro film, its characterized in that: the Teflon sheet comprises a Teflon sheet and a rubber layer, wherein a mounting hole is formed in the center of the Teflon sheet, and an annular clamping groove coaxial with the mounting hole is formed in one surface of the Teflon sheet;

2. The rubber and tetrafluoro film composite seal according to claim 1, characterized in that: the rubber layer extends to cover the side wall of the Teflon sheet and the other surface of the Teflon sheet, the rubber layer on the other surface of the Teflon sheet is annular, and the diameter of an inner ring of the annular rubber layer is larger than that of the mounting hole.

3. The rubber and tetrafluoro film composite seal according to claim 2, characterized in that: the four fluorine pieces and the rubber layer are of an integrated structure.

4. The rubber and tetrafluoro film composite seal according to claim 3, characterized in that: and annular bulges are arranged on the surfaces of the rubber layers positioned on the two sides of the tetrafluoro sheet.

5. The rubber and tetrafluoro film composite seal according to claim 4, characterized in that: the inner wall end of the clamping groove faces away from the center of the clamping groove and extends in the direction to form a clamping protrusion.

6. A spring assembling device for the rubber-tetrafluoroethylene film composite seal member according to any one of claims 1 to 5, wherein: the assembly body is of a frustum structure, and the diameter of the large-diameter end of the assembly body is larger than that of the mounting hole.

7. The spring assembling apparatus of a rubber and tetrafluoro film composite seal according to claim 6, wherein: a plurality of sliding grooves which are uniformly distributed along the radial direction of the assembly body are arranged on the assembly body along the axial direction of the assembly body, and one end of each sliding groove extends to the end surface of the small-diameter end of the assembly body; still include the assembly part, the assembly part includes slider and assembly piece, the slider with spout sliding fit connects, the assembly piece is connected perpendicularly the slider is close to the tip of assembly body major diameter end, the assembly piece is located outside the spout.