CN210440593U

CN210440593U - Butterfly valve seat

Info

Publication number: CN210440593U
Application number: CN201920931050.XU
Authority: CN
Inventors: 田立增
Original assignee: TIANJIN GALAXY VALVE CO Ltd
Current assignee: TIANJIN GALAXY VALVE CO Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-05-01
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a butterfly valve disk seat belongs to valve technical field, including cylindric disk seat body, its characterized in that: the inner circumferential surface of the valve seat body is provided with a circumferential sealing groove, a plurality of sunken prestressed grooves are uniformly distributed on the bottom surface of the sealing groove, the prestressed grooves are uniformly distributed along the circumferential direction of the circumferential sealing groove, a rubber ring and an extrusion ring are assembled in the sealing groove, the lower part of the rubber ring is provided with the extrusion ring, an elastic sheet is arranged in each prestressed groove, the middle of the elastic sheet is pressed against the extrusion ring, and the inner part of the extrusion ring is a hole cavity filled with liquid. The utility model discloses a sealed effect is better, long service life.

Description

Butterfly valve seat

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a butterfly valve disk seat.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. 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.

The valve seat is a bearing piece arranged between the valve body and the valve plate, in the prior art, the valve seat is directly contacted with the outer edge of the valve plate to realize sealing, or a sealing ring is arranged between the valve seat and the valve plate, in the process of long-term use, the acting force of the sealing ring is constant, the sealing strength is weakened along with the abrasion of parts, and the service life of the valve is limited.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a solve butterfly valve disk seat of the poor problem of current butterfly valve leakproofness.

The utility model discloses a realize like this, a butterfly valve disk seat, including cylindric disk seat body, its characterized in that: the inner circumferential surface of the valve seat is provided with a circumferential sealing groove, a plurality of sunken prestressed grooves are uniformly distributed on the bottom surface of the sealing groove, the prestressed grooves are uniformly distributed along the circumferential direction of the circumferential sealing groove, a rubber ring and an extrusion ring are assembled in the sealing groove, the lower part of the rubber ring is provided with the extrusion ring, an elastic sheet is arranged in each prestressed groove, the middle of the elastic sheet is pressed against the extrusion ring, and the inner part of the extrusion ring is a hole cavity filled with liquid.

The utility model discloses rely on the inside liquid mobility of extrusion circle to set up the elasticity automatic compensation of the elastic sheet of disk seat inside to the little rubber power part of sealing force on, make each part of sealing washer have the bulging force all the time to for the valve plate in long-term use because of the part combines or the effort reduces between the sealing member that wearing and tearing produced compensates, guarantee to keep there being sufficient leakproofness throughout between valve plate and the disk seat, the life of extension valve.

In the above technical solution, preferably, the rubber ring has a U-shaped structure, and a protruding rib clamped with the sealing groove is disposed on an outer side of the rubber ring. The rubber ring with the U-shaped structure can ensure the sealing performance and has enough elastic deformation, and the sealing is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention.

In the figure, 10, sealing groove; 20. a pre-stressed slot; 30. a rubber ring; 40. extruding a ring; 50. an elastic sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

For solving the poor drawback of current butterfly valve leakproofness, the utility model particularly provides a butterfly valve disk seat, sealed effect is more, and the life-span is longer. For further explanation of the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:

referring to fig. 1 and 2, a butterfly valve seat includes a cylindrical valve seat body, a circumferential sealing groove 10 is disposed on an inner circumferential surface of the valve seat body, and a plurality of sinking pre-stressed grooves 20 are uniformly distributed on a bottom surface of the sealing groove. The sealing groove is internally provided with a rubber ring 30 and an extrusion ring 40, the extrusion ring is arranged at the lower part of the rubber ring, an elastic sheet 50 is arranged in the pre-stress groove, and the middle part of the elastic sheet is pressed against the extrusion ring.

The inside of the extrusion ring is a pore cavity filled with liquid. The liquid fluidity and the elasticity of the extrusion ring can evenly apply the elasticity of the elastic sheets which are dispersedly arranged to the rubber ring, and the pressure compensation is carried out on the part with small sealing force of the rubber ring, so that the sealing performance between the parts is ensured. The utility model discloses carry out pressure compensation at any time with the prestressing force of some setting through the extrusion circle, guarantee the good work leakproofness in the rubber circle working process.

In this embodiment, the rubber ring has a U-shaped structure, and a protruding rib clamped with the sealing groove is disposed on the outer side of the rubber ring.

Under the elastic extrusion effect of the arc-shaped elastic sheet, the liquid fluidity enables the part of the sealing ring, which is positioned at the outer edge of the plate, to be always in an expansion state, so that the installation allowance and the abrasion allowance generated in the working process of the valve plate can be compensated, and the sealing property of the valve is improved.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a butterfly valve disk seat, includes cylindric disk seat body, its characterized in that: the inner circumferential surface of the valve seat body is provided with a circumferential sealing groove, a plurality of sunken prestressed grooves are uniformly distributed on the bottom surface of the sealing groove, the prestressed grooves are uniformly distributed along the circumferential direction of the circumferential sealing groove, a rubber ring and an extrusion ring are assembled in the sealing groove, the lower part of the rubber ring is provided with the extrusion ring, an elastic sheet is arranged in each prestressed groove, the middle of the elastic sheet is pressed against the extrusion ring, and the inner part of the extrusion ring is a hole cavity filled with liquid.

2. The butterfly valve seat of claim 1, wherein: the rubber ring is of a U-shaped structure, and convex ribs clamped with the sealing grooves are arranged on the outer side of the rubber ring.