CN210978727U

CN210978727U - Butterfly valve convenient to seal

Info

Publication number: CN210978727U
Application number: CN201921679222.5U
Authority: CN
Inventors: 王宝军
Original assignee: Tianjin Jinzheng Valve Co ltd
Current assignee: Tianjin Jinzheng Valve Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-07-10
Anticipated expiration: 2029-10-09

Abstract

The utility model belongs to the technical field of the butterfly valve technique and specifically relates to a butterfly valve convenient to seal, which comprises a valve body, sliding connection has the valve plate on the inner wall of valve body, the positive fixedly connected with valve shaft of valve plate, the base is extended to the bottom of valve body, the bottom of valve shaft penetrates the inside of base and is connected with the inner wall rotation of base, be provided with the sealing washer in the gap between the bottom of valve body inner wall and the valve shaft, the valve body and fixedly connected with connecting pin are passed on the top of valve shaft, the inside sealed pad that is provided with in gap between the top of valve shaft and valve body. The utility model discloses with extrusion cover sliding connection at the screw rod surface that two can overturn and through the screw thread cover fastening of threaded connection on the threaded rod top, move the screw thread cover through twisting and promote the extrusion cover for the bottom of extrusion cover constantly compresses tightly sealed the pad, thereby reaches the effect of the sealed pad of compressing tightly, has promoted the sealed effect of filling up.

Description

Butterfly valve convenient to seal

Technical Field

The utility model relates to a butterfly valve field of making especially relates to a butterfly valve of convenient sealing.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline medium, i.e. a valve whose closing member is a disk and can be rotated around the valve shaft to open and close, and can be used for controlling the flow of various fluids of air, water, steam, various corrosive media, slurry, oil product, liquid metal and radioactive medium, etc. and mainly playing the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part 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 gap between butterfly valve and the valve shaft can be provided with sealed the pad, and sealed pad is not convenient for compress tightly setting up the in-process, makes the sealed not thorough enough of gap easily, influences sealed effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having the gap between butterfly valve and the valve shaft among the prior art and can be provided with sealed the pad, sealed pad is setting up the in-process, is not convenient for compress tightly, makes the sealed not thorough enough to the gap easily, influences the shortcoming of sealed effect, and the butterfly valve who conveniently seals who provides.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a butterfly valve convenient to seal comprises a valve body, wherein a valve plate is connected to the inner wall of the valve body in a sliding manner, a valve shaft is fixedly connected to the front side of the valve plate, a base extends out of the bottom of the valve body, the bottom end of the valve shaft penetrates into the base and is rotatably connected with the inner wall of the base, a sealing ring is arranged in a gap between the bottom of the inner wall of the valve body and the valve shaft, the top end of the valve shaft penetrates through the valve body and is fixedly connected with a connecting pin, a sealing gasket is arranged in the gap between the valve shaft and the top of the valve body, two symmetrically arranged mounting grooves are formed in the top of the valve body, threaded rods are rotatably connected to the inner wall of the mounting grooves, an extrusion sleeve is jointly and slidably connected between the two threaded rods, the extrusion sleeve is slidably connected to the surface of the valve shaft and, the top end of the threaded rod is in threaded connection with a threaded sleeve for fastening the extrusion sleeve, and the bottom of the threaded sleeve is in contact with the top of the extrusion sleeve.

Preferably, the front surface of the valve plate is fixedly connected with a fixing sleeve, and the inner wall of the fixing sleeve is fixedly connected with the surface of the valve shaft.

Preferably, the inner wall of the base is fixedly connected with a first bearing, and the inner wall of an inner ring of the first bearing is fixedly connected with the valve shaft.

Preferably, six connecting holes are formed in the edge of the opening of the front face and the edge of the opening of the back face of the valve body and are uniformly distributed in a circular shape.

Preferably, the top of the extrusion sleeve is fixedly connected with a support sleeve, the inner wall of the support sleeve is fixedly connected with a second bearing, and the inner wall of the inner ring of the second bearing is fixedly connected with the surface of the valve shaft.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses with extrusion cover sliding connection at the screw rod surface that two can overturn and through the screw thread cover fastening of threaded connection on the threaded rod top, move the screw thread cover through twisting and promote the extrusion cover for the bottom of extrusion cover constantly compresses tightly sealed the pad, thereby reaches the effect of the sealed pad of compressing tightly, has promoted the sealed effect of filling up.

Drawings

Fig. 1 is a structural section view of an elevation view of a butterfly valve convenient for sealing according to the present invention;

fig. 2 is a schematic structural diagram of a top view of a butterfly valve convenient for sealing according to the present invention;

fig. 3 is a perspective view of the butterfly valve of the present invention, which is convenient to seal.

In the figure: the valve comprises a valve body 1, a connecting hole 2, a valve plate 3, a valve shaft 4, a fixing sleeve 5, a base 6, a sealing ring 7, a first bearing 8, a sealing gasket 9, a mounting groove 10, a threaded rod 11, a threaded sleeve 12, an extrusion sleeve 13, a supporting sleeve 14, a second bearing 15 and a connecting pin 16.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-3, a butterfly valve convenient for sealing comprises a valve body 1, six connecting holes 2 are formed in the edge of an opening on the front side and the back side of the valve body 1, the six connecting holes 2 are uniformly distributed in a circular shape, a valve plate 3 is slidably connected to the inner wall of the valve body 1, a valve shaft 4 is fixedly connected to the front side of the valve plate 3, a fixing sleeve 5 is fixedly connected to the front side of the valve plate 3, the inner wall of the fixing sleeve 5 is fixedly connected with the surface of the valve shaft 4, and the connecting holes 2 are arranged to play a role in facilitating pipe connection of a plug-in connector at the edge of the.

Base 6 extends from the bottom of valve body 1, and the bottom of valve shaft 4 penetrates the inside of base 6 and rotates with the inner wall of base 6 to be connected, the first bearing 8 of fixedly connected with on the inner wall of base 6, the inner wall and the valve shaft 4 fixed connection of the 8 inner rings of first bearing, through setting up first bearing 8, has played the bottom of valve shaft 4 and the inner wall of base 6 and has rotated the effect of being connected.

Be provided with sealing washer 7 in the gap between the bottom of 1 inner wall of valve body and the valve shaft 4, valve body 1 and fixedly connected with connecting pin 16 are passed on the top of valve shaft 4, and the inside sealed pad 9 that is provided with in the gap between the top of valve shaft 4 and valve body 1 through setting up connecting pin 16, has played the effect of conveniently connecting the piece of stirring, through setting up sealed pad 9, has played the effect of sealing up the gap between the top of valve shaft 4 and valve body 1.

The top of the valve body 1 is provided with two symmetrically arranged mounting grooves 10, the inner wall of the mounting groove 10 is rotatably connected with a threaded rod 11, an extrusion sleeve 13 is slidably connected between the two threaded rods 11, the extrusion sleeve 13 is slidably connected on the surface of the valve shaft 4 and extends into a gap between the valve shaft 4 and the top of the valve body 1, the bottom of the extrusion sleeve 13 is contacted with the top of the sealing gasket 9, the top end of the threaded rod 11 is in threaded connection with a threaded sleeve 12 for fastening the extrusion sleeve 13, the bottom of the threaded sleeve 12 is contacted with the top of the extrusion sleeve 13, by arranging the rotatable threaded rod 11, the effect of conveniently turning over the threaded rod 11 to be horizontal and reverse is achieved, the storage is convenient, the extrusion sleeve 13 is slidably connected on the surfaces of the two turnable threaded rods 11 and is fastened through the threaded sleeve 12 which is in threaded connection with the top end, the bottom end of the extrusion sleeve 13 is enabled to continuously compress the sealing gasket 9, so that the effect of compressing the sealing gasket 9 is achieved, and the sealing effect of the sealing gasket 9 is improved.

The top of the extrusion sleeve 13 is fixedly connected with a support sleeve 14, the inner wall of the support sleeve 14 is fixedly connected with a second bearing 15, the inner wall of the inner ring of the second bearing 15 is fixedly connected with the surface of the valve shaft 4, and the support sleeve 14 and the second bearing 15 are arranged to support the valve shaft 4 in a rotating mode.

The theory of operation, with extrusion cover 13 sliding connection at two threaded rod 11 surfaces that can overturn and through the screw-thread tightening of the screw-thread bush 12 of threaded connection on 11 tops of threaded rod, through twisting screw-thread bush 12 promotion extrusion cover 13 for the sealed pad 9 of constantly compressing tightly is packed to the bottom of extrusion cover 13, thereby reaches the effect of compressing tightly sealed pad 9, has promoted the sealed effect of sealed pad 9.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The butterfly valve convenient to seal comprises a valve body (1) and is characterized in that a valve plate (3) is connected to the inner wall of the valve body (1) in a sliding mode, a valve shaft (4) is fixedly connected to the front face of the valve plate (3), a base (6) extends out of the bottom of the valve body (1), the bottom end of the valve shaft (4) penetrates into the base (6) and is connected with the inner wall of the base (6) in a rotating mode, a sealing ring (7) is arranged in a gap between the bottom of the inner wall of the valve body (1) and the valve shaft (4), the top end of the valve shaft (4) penetrates through the valve body (1) and is fixedly connected with a connecting pin (16), a sealing gasket (9) is arranged in the gap between the valve shaft (4) and the top of the valve body (1), two symmetrically arranged mounting grooves (10) are formed in the top of the valve body (1), two common sliding connection has extrusion cover (13) between threaded rod (11), extrusion cover (13) sliding connection is on the surface of valve shaft (4) and extend to in the gap between the top of valve shaft (4) and valve body (1), the bottom of extrusion cover (13) and the top of sealed pad (9) contact each other, the top threaded connection of threaded rod (11) has thread bush (12) of fastening extrusion cover (13), the bottom of thread bush (12) and the top of extrusion cover (13) contact each other.

2. A butterfly valve facilitating sealing according to claim 1, characterized in that a fixing sleeve (5) is fixedly connected to the front face of the valve plate (3), and the inner wall of the fixing sleeve (5) is fixedly connected to the surface of the valve shaft (4).

3. The butterfly valve convenient for sealing according to claim 1, wherein a first bearing (8) is fixedly connected to the inner wall of the base (6), and the inner wall of the inner ring of the first bearing (8) is fixedly connected to the valve shaft (4).

4. The butterfly valve convenient for sealing according to claim 1, wherein six connecting holes (2) are formed at the edge of the opening of the front surface and the edge of the opening of the back surface of the valve body (1), and the six connecting holes (2) are uniformly distributed in a circular shape.

5. The butterfly valve convenient for sealing is characterized in that a supporting sleeve (14) is fixedly connected to the top of the extruding sleeve (13), a second bearing (15) is fixedly connected to the inner wall of the supporting sleeve (14), and the inner wall of the inner ring of the second bearing (15) is fixedly connected with the surface of the valve shaft (4).