CN214946453U

CN214946453U - Center line flange type butterfly valve with lining ring not easy to shift

Info

Publication number: CN214946453U
Application number: CN202022939399.3U
Authority: CN
Inventors: 仇立强
Original assignee: Jiangsu Gaoda Valve Co ltd
Current assignee: Jiangsu Gaoda Valve Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-11-30
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a central line flange formula butterfly valve that junk ring is difficult for aversion, including the valve body and the junk ring that is located the valve body inner wall, valve body both ends inboard is equipped with the round notch, and the junk ring is equipped with the flange limit that turns into the notch, is equipped with a plurality of recesses on the valve body, is equipped with the arch that a plurality of cards go into the recess on the junk ring. The utility model discloses in notch and recess were gone into to centre line flange formula butterfly valve's junk ring card, rotate the in-process at the butterfly plate and can not lead to the junk ring displacement, guaranteed the leakproofness of butterfly valve, improve the life of valve.

Description

Center line flange type butterfly valve with lining ring not easy to shift

Technical Field

The utility model discloses valve accessory field especially relates to a central line flange formula butterfly valve that junk ring is difficult for shifting.

Background

When the center line flange butterfly valve is opened, the butterfly plate takes the valve rod as the center, and when the butterfly plate is rotated, the butterfly plate is separated from or contacted with the lining ring, and the lining ring can be driven to move slightly. When the valve is opened and closed frequently, the lining ring can displace along with opening and closing, and after a long time, the sealing is not tight, leakage is generated, and the service life of the valve is reduced. Therefore, the lining ring structure of the center line flange type butterfly valve needs to be adjusted, the sealing performance of the butterfly valve is guaranteed, and the service life of the valve is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a central line flange formula butterfly valve that junk ring is difficult for shifting.

The utility model discloses an innovation point lies in the utility model discloses in notch and recess are gone into to center line flange formula butterfly valve's junk ring card, rotate the in-process at the butterfly plate and can not lead to the junk ring displacement, guaranteed the leakproofness of butterfly valve, improve the life of valve.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that: the utility model provides a central line flange formula butterfly valve that junk ring is difficult for aversion, includes valve body and the junk ring that is located the valve body inner wall, valve body both ends inboard is equipped with the round notch, the junk ring is equipped with the flange limit that turns into the notch, be equipped with a plurality of recesses on the valve body, be equipped with the arch of a plurality of cards income recesses on the junk ring. The lining ring of the center line flange type butterfly valve is clamped into the notch and the groove, so that the lining ring cannot be displaced in the rotation process of the butterfly plate, the sealing performance of the butterfly valve is ensured, and the service life of the valve is prolonged.

Preferably, the flange extends beyond the end of the valve body. After the flange edge is butted with other flanges, the flange edge of the lining ring is clamped and pressed, and is not easy to displace.

Preferably, the section of the inner wall of the lining ring is arc-shaped, and the diameter of the middle of the inner wall of the valve body is smaller than the diameters of the two ends. Is not easy to displace.

The utility model has the advantages that:

1. the utility model discloses in well central line flange formula butterfly valve's junk ring card income notch and recess, can not lead to the junk ring displacement at the butterfly plate rotation in-process, guaranteed the leakproofness of butterfly valve, improve the life of valve.

2. The utility model discloses well flange limit surpasss the valve body tip, flange limit and other flange butt joints back, and the flange limit of junk ring is pressed down by pressing tightly, more is difficult for shifting.

3. The lining ring in the utility model is gradually stressed to form sealing when the valve is closed after the lining ring has a certain radian. When the valve is opened, the valve plate is separated from the lining ring gradually, and the lining ring is stressed less, so that the displacement phenomenon cannot be generated.

Drawings

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

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1: as shown in figure 1, the center line flange type butterfly valve with the lining ring not easy to shift comprises a valve body 1 and the lining ring 2 located on the inner wall of the valve body 1, wherein a circle of notches 3 are formed in the inner sides of two ends of the valve body 1, the lining ring 2 is provided with a flange edge 4 turning into the notches 3, and the flange edge 4 exceeds the end portion of the valve body 1. The valve body 1 is provided with a plurality of grooves 5, and the lining ring 2 is provided with a plurality of bulges 6 clamped into the grooves 5. The section of the inner wall of the lining ring 2 is arc-shaped, and the diameter of the middle of the inner wall of the valve body 1 is smaller than the diameters of the two ends.

The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. The utility model provides a central line flange formula butterfly valve that junk ring is difficult for aversion, includes the valve body and is located the junk ring of valve body inner wall, valve body both ends inboard is equipped with the round notch, the junk ring is equipped with the flange limit that turns into the notch, its characterized in that, be equipped with a plurality of recesses on the valve body, be equipped with the arch of a plurality of cards income recesses on the junk ring.

2. The gasket less prone to shifting center line flange butterfly valve of claim 1 wherein the flange edge extends beyond the valve body end.

3. The center line flange butterfly valve with a gasket not prone to displacement as claimed in claim 1, wherein the cross section of the inner wall of the gasket is arc-shaped, and the diameter of the middle of the inner wall of the valve body is smaller than the diameters of the two ends.