CN211852836U

CN211852836U - Novel butterfly valve

Info

Publication number: CN211852836U
Application number: CN201922429732.3U
Authority: CN
Inventors: 高永祥
Original assignee: Tianjin Hualida Valve Co ltd
Current assignee: Tianjin Hualida Valve Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-03
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a novel butterfly valve, including valve body, valve rod and disk seat, valve plate, the valve body lower extreme is provided with sealed chamber, and the valve rod lower extreme inserts sealed intracavity, and sliding seal has cup jointed the sealing rubber circle on being located the valve rod of sealed intracavity, spacing sleeve sliding seal cup joints on the valve rod, the sealing rubber circle is located in the spacing sleeve and outer periphery and spacing sleeve sliding seal are connected, and sealing rubber circle bottom face and spacing bottom face contact, the spacing sleeve below is provided with the screw thread kicking block, the screw thread kicking block with valve rod sliding seal be connected and with valve body threaded connection, sealed chamber below is provided with the end cover, the end cover passes through bolted connection with the valve body. The lower end of the valve body is arranged on the detachable structure, so that the valve body can be easily replaced; the rubber sealing ring is limited through the limiting sleeve, so that the sealing effect is improved; the end cover is provided with a detachable sliding block, so that the sliding block can be simply replaced.

Description

Novel butterfly valve

Technical Field

The utility model relates to a valve structure technical field especially relates to a novel butterfly valve.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, and can be used for the switch control of low-pressure pipeline media. 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 body lower extreme of butterfly valve that uses at present, valve rod lower extreme male inslot, it is tight sealed, the inside gets into debris easily to influence the rotation of valve rod, influence opening of valve.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists among the above-mentioned prior art, the aim at of this application provides a novel butterfly valve.

In order to realize the purpose of the utility model, the utility model provides a novel butterfly valve, which comprises a valve body, a valve rod, a valve seat and a valve plate,

the valve body lower extreme is provided with sealed chamber, and the valve rod lower extreme inserts sealed intracavity, and sliding seal has cup jointed the sealing rubber circle on being located the valve rod of sealed intracavity, spacing sleeve sliding seal cup joints on the valve rod, the sealing rubber circle is located in the spacing sleeve and outer periphery and spacing sleeve sliding seal are connected, and sealing rubber circle bottom face and spacing bottom face contact, the spacing sleeve below is provided with the screw thread kicking block, the screw thread kicking block with valve rod sliding seal be connected and with valve body threaded connection, sealed chamber below is provided with the end cover, the end cover passes through bolted connection with the valve body.

The valve rod is inserted into the sliding block and is in sliding connection with the sliding block.

Compared with the prior art, the utility model has the advantages that,

1. the lower end of the valve body is arranged in a detachable structure, and if the sealing performance of the rubber sealing ring is reduced, the rubber sealing ring can be easily replaced;

2. the rubber sealing ring is limited by the limiting sleeve, so that the rubber sealing ring cannot be easily deformed in the axial direction and the lateral direction, and the sealing effect is improved;

3. be provided with the sliding block that can dismantle on the end cover, if after valve rod frictional wear, can simply change the sliding block can, the cost is lower, maintenance speed piece.

Drawings

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

FIG. 2 is a schematic view of the valve seat of the present application;

in the figure, 1-valve rod, 2-valve body, 3-valve seat, 4-valve plate, 5-thread top block, 6-end cover, 7-sliding block, 8-bolt, 9-limiting sleeve, 10-sealing rubber ring, 31-pressing block, 32-L type limiting block and 33-inclined plane sealing ring.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when used in this specification the singular forms "a", "an" and/or "the" include "specify the presence of stated features, steps, operations, elements, or modules, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Examples

As shown in figure 1 of the drawings, in which,

the embodiment discloses a novel butterfly valve, which comprises a valve body 2, a valve rod 1, a valve seat 3 and a valve plate 4,

the lower end of the valve body 2 is provided with a sealing cavity, the lower end of the valve rod 1 is inserted into the sealing cavity, a sealing rubber ring 10 is sleeved on the valve rod 1 in the sealing cavity in a sliding sealing mode, a limiting sleeve 9 is connected to the valve rod 1 in a sliding sealing mode, the sealing rubber ring 10 is located in the limiting sleeve 9, the outer circumferential surface of the limiting sleeve 9 is connected with the limiting sleeve 9 in a sliding sealing mode, the bottom end face of the sealing rubber ring 10 is in contact with the limiting bottom end face, a threaded top block is arranged below the limiting sleeve 9 and is connected with the valve rod 1 in a sliding sealing mode and in threaded connection with the valve body 2, an end cover 5 is arranged below the sealing cavity, and the end cover 5 is connected with the valve body.

Wherein, be provided with the recess on the end cover 5, be provided with sliding block 7 in the recess, valve rod 1 inserts in the sliding block 7 and sliding connection.

As shown in fig. 2, the sealing connection surface of the valve seat 3 and the valve plate 4 is an inclined surface, the right end of the valve seat 3 is sequentially provided with an annular inclined surface sealing ring 33, an annular L-shaped limit block 32 and an annular pressing block 31, the contact surface of the inclined surface sealing ring 33 and the valve plate 4 is an inclined surface, the inclined surface sealing ring 33 is arranged on the L-shaped limit block 32, and the annular pressing block 31 is pressed on the L-shaped limit block 32 and the valve seat 3 and is connected with the valve seat 3 through a bolt 8.

The structure further improves the sealing performance of the valve seat 3 and the valve plate 4, and the L-shaped limiting block 32 can limit the inclined sealing ring 33, so that the inclined sealing ring 33 is prevented from deforming, and the sealing performance of the inclined sealing ring 33 is kept.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A novel butterfly valve is characterized by comprising a valve body, a valve rod, a valve seat and a valve plate,

the valve body lower extreme is provided with sealed chamber, and the valve rod lower extreme inserts sealed intracavity, and sliding seal has cup jointed the sealing rubber circle on being located the valve rod of sealed intracavity, and limiting sleeve sliding seal cup joints on the valve rod, the sealing rubber circle is located in the limiting sleeve and outer periphery and limiting sleeve sliding seal are connected, and sealing rubber circle bottom face and limiting bottom face contact, the limiting sleeve below is provided with the screw thread kicking block, screw thread kicking block and valve rod sliding seal be connected and with valve body threaded connection, the sealed chamber below is provided with the end cover, the end cover passes through bolted connection with the valve body.

2. The new butterfly valve of claim 1 wherein said end cap has a recess and a sliding block is disposed in said recess, and said valve stem is inserted into said sliding block and slidably coupled thereto.