CN214662117U

CN214662117U - Rubber valve seat with double sealing effect

Info

Publication number: CN214662117U
Application number: CN202021572342.8U
Authority: CN
Inventors: 苑宝奇
Original assignee: Tianjin Qilite Plastics Co ltd
Current assignee: Tianjin Qilite Plastics Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-11-09
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a rubber valve seat with double seal effect belongs to valve technical field, the novel nipple rectifier comprises a cylindrical shel, the pressure chamber has been seted up to the inside of barrel, the outside symmetry of barrel is fixed with the spacing ring. The utility model discloses make the disk seat have fine compressibility, because the pressure of pressure cavity is greater than external pressure, therefore the barrel outside all tympanites the arch with the inboard, when the outside position of bulging and the inboard contact of butterfly valve, the butterfly valve inboard is flattened the position of bulging, make the barrel inboard bulge more, the spacing ring can be drawn close to the butterfly valve when the deformation of the barrel outside simultaneously, and then increase and the leakproofness between the butterfly valve, the fastness of disk seat has been improved, and the inboard bulge of barrel has increased the leakproofness with the butterfly plate outside, thereby the holistic leakproofness of this rubber valve seat has been improved, when the butterfly plate frequently rotates messenger's barrel and produces wearing and tearing simultaneously, the gaseous inside arch of barrel and the laminating of butterfly plate that still outwards expands makes the intracavity, the life of disk seat has been prolonged.

Description

Rubber valve seat with double sealing effect

Technical Field

The utility model relates to a rubber valve seat especially relates to a rubber valve seat with double seal effect, belongs to valve technical field.

Background

A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

At present, rubber valves are widely used in various mechanical parts due to the characteristics of small volume, light weight, good sealing performance, long service life, flexible installation, large buffering force and the like. The butterfly valve is widely used in various pipelines to regulate or cut off fluid in the pipelines, the rubber valve seat is one of main parts of the butterfly valve, and when the valve plate is driven by the rotating shaft to rotate and is arranged on the valve body, the valve plate is contacted with the rubber valve seat, so that the valve is closed to achieve the sealing effect;

when the existing butterfly valve is used, because some fine solid particle impurities exist in flowing substances, the butterfly valve is easily clamped by fine solid particles between the valve seat and the butterfly plate when the butterfly valve is closed, and in addition, under the long-term rotation of the butterfly plate, the inside of the valve seat can not be abraded, the sealing performance of the butterfly valve is finally poor, the butterfly valve can be leaked after long-term use, so that the butterfly valve needs to be frequently replaced, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a rubber valve seat with double sealing effect to solve among the prior art problem that the disk seat easily weares and teares and lead to the leakproofness poor.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a rubber valve seat with dual seal effect, includes the barrel, the pressure chamber has been seted up to the inside of barrel, the outside symmetry of barrel is fixed with the spacing ring, and is two sets of the spacing groove has all been seted up to one side of spacing ring, the symmetry is provided with the collar on the barrel, the one end of collar is fixed with the beaded finish, be linked together between beaded finish and the collar.

Preferably: the pressure cavity is an annular pressure cavity, and the pressure inside the pressure cavity is higher than the pressure outside.

Preferably: the quantity of the reinforcing rings is two groups, and the two groups of reinforcing rings are symmetrically arranged by taking the horizontal center line of the cylinder body as a symmetry axis.

Preferably: the outside of spacing ring is provided with anti-skidding line, and anti-skidding line is annular anti-skidding line.

Preferably: and the inner side of the cylinder body is provided with a wear-resistant layer.

Preferably: the diameter of one end of the reinforcing ring far away from the installation ring is smaller than that of the installation ring.

The utility model has the advantages that:

the utility model provides a pair of rubber disk seat with double sealing effect: the valve seat has good compressibility through the mutual matching use of the barrel, the limiting ring, the limiting groove and the pressure cavity, and the pressure intensity in the pressure cavity is greater than the external pressure intensity, so that the outer side and the inner side of the barrel are both bulged, when the bulging position at the outer side is contacted with the inner side of the butterfly valve, the bulging position is flattened at the inner side of the butterfly valve, so that the inner side of the barrel is bulged, meanwhile, the limiting ring can be drawn close to the butterfly valve when being deformed at the outer side of the barrel, further, the sealing performance between the limiting ring and the butterfly valve is improved, the firmness of the valve seat is improved, the bulging at the inner side of the barrel is improved, the sealing performance between the inner side of the barrel and the outer side of the butterfly plate is improved, meanwhile, when the barrel is worn due to the frequent rotation of the butterfly plate, the gas in the cavity still expands outwards to enable the bulging at the inner side of the barrel to be attached to the butterfly plate, and the service life of the valve seat is prolonged; through the mutually supporting use of collar and beaded finish, when the valve rod runs through the beaded finish, beaded finish and valve rod laminating, therefore increase the leakproofness between valve rod and the disk seat, prevent that flowing material from flowing in the clearance of barrel and valve rod to the leakproofness of disk seat has been improved.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

fig. 3 is a perspective view of the present invention.

In the figure: 1. a barrel; 2. a limiting ring; 3. a limiting groove; 4. a pressure chamber; 5. a mounting ring; 6. a reinforcement ring.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-3, the present embodiment provides a rubber valve seat with dual sealing effect, which includes a barrel 1, a pressure chamber 4 is provided inside the barrel 1, limiting rings 2 are symmetrically fixed outside the barrel 1, limiting grooves 3 are provided on one side of each of the two sets of limiting rings 2, mounting rings 5 are symmetrically provided on the barrel 1, a reinforcing ring 6 is fixed on one end of each of the mounting rings 5, and the reinforcing ring 6 is communicated with the mounting rings 5.

In this embodiment, as shown in fig. 1, the pressure chamber 4 is an annular pressure chamber, and the pressure inside the pressure chamber 4 is greater than the pressure outside, so that the inside and the outside of the cylinder 1 are always bulged outwards.

In this embodiment, as shown in fig. 1, the number of the reinforcing rings 6 is two, and the two groups of reinforcing rings 6 are symmetrically arranged with the horizontal center line of the cylinder 1 as the symmetry axis, so that the sealing between the valve rod and the cylinder 1 is tighter, and in addition, the leakage of the fluid object from the gap between the valve rod and the mounting ring 5 can be blocked.

In this embodiment, as shown in fig. 3, the outside of spacing ring 2 is provided with anti-skidding line, and anti-skidding line is annular anti-skidding line, and the anti-skidding line in the 2 outsides of spacing ring increases the frictional force between spacing ring 2 and the crowbar, prizes the disk seat wholly more easily, makes things convenient for the staff to dismantle whole disk seat.

In this embodiment, as shown in fig. 1, the inner side of the cylinder 1 is provided with a wear-resistant layer, so as to enhance the wear resistance of the inner side of the cylinder 1, slow down the wear of the inner side of the cylinder 1, and prolong the service life of the valve seat.

In this embodiment, as shown in fig. 1, the diameter of the end of the reinforcing ring 6 away from the mounting ring 5 is smaller than the diameter of the mounting ring 5, so that the valve stem is more attached to the reinforcing ring 6 after the valve stem is mounted, and the sealing performance between the valve seat and the valve stem is improved.

As shown in fig. 1 to 3, the present embodiment provides a rubber valve seat with double sealing effect, which works as follows:

step 1: the limiting ring 2 on the outer side of the cylinder 1 is clamped and installed on a butterfly valve, because the pressure cavity 4 in the cylinder 1 is filled with inert gas and the pressure is greater than the outside, and the rubber material of the cylinder 1 has the characteristic of good ductility, the cylinder 1 can bulge, and the butterfly valve after installation extrudes the cylinder 1 inwards to enable the outer side of the cylinder 1 to be flattened, so that the inner side of the cylinder 1 is more convex;

step 2: the inner side of the cylinder body 1 is contacted with the outer side of the butterfly plate, and when the inner side of the cylinder body 1 becomes thin due to long-term friction between the butterfly plate and the inner side of the cylinder body 1, the gas in the pressure cavity 4 still expands towards the drum, so that the sealing state between the cylinder body 1 and the butterfly plate is still kept;

and step 3: the pore of butterfly plate is aimed at the block in advance in the outside of beaded finish 6, installs the butterfly plate block in the inside of barrel 1 afterwards, during the installation valve rod, need pass the valve rod in collar 5 and beaded finish 6, and the beaded finish 6 between valve rod and the barrel 1 plays sealed effect to both this moment, prevents that the fluid object from revealing from the clearance between collar 5 and the valve rod.

The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.

Claims

1. The utility model provides a rubber valve seat with dual seal effect which characterized in that: the novel cylinder is characterized by comprising a cylinder body (1), wherein a pressure cavity (4) is formed in the cylinder body (1), a limiting ring (2) is symmetrically fixed to the outer side of the cylinder body (1), the limiting ring (2) is arranged in two groups, a limiting groove (3) is formed in one side of the limiting ring (2), mounting rings (5) are symmetrically arranged on the cylinder body (1), reinforcing rings (6) are fixed to one ends of the mounting rings (5), and the reinforcing rings (6) are communicated with the mounting rings (5).

2. A rubber valve seat with double sealing effect according to claim 1, wherein: the pressure cavity (4) is an annular pressure cavity, and the pressure inside the pressure cavity (4) is higher than the pressure outside.

3. A rubber valve seat with double sealing effect according to claim 1, wherein: the number of the reinforcing rings (6) is two, and the two groups of reinforcing rings (6) are symmetrically arranged by taking the horizontal center line of the cylinder body (1) as a symmetry axis.

4. A rubber valve seat with double sealing effect according to claim 1, wherein: the outer side of the limiting ring (2) is provided with anti-slip lines which are annular anti-slip lines.

5. A rubber valve seat with double sealing effect according to claim 1, wherein: the inner side of the cylinder body (1) is provided with a wear-resistant layer.

6. A rubber valve seat with double sealing effect according to claim 1, wherein: the diameter of one end, far away from the mounting ring (5), of the reinforcing ring (6) is smaller than that of the mounting ring (5).