CN212643576U

CN212643576U - Flange type butterfly valve

Info

Publication number: CN212643576U
Application number: CN202020542916.0U
Authority: CN
Inventors: 杨春雨
Original assignee: Shanghai Shengfan Fluid Control Co ltd
Current assignee: Shanghai Shengfan Fluid Control Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-03-02
Anticipated expiration: 2030-04-14

Abstract

The utility model provides a flange formula butterfly valve, including valve body, valve rod, butterfly plate, be equipped with the mounting hole on the butterfly plate, be equipped with the dead lever on the valve rod, be equipped with the fixed orifices on the lateral wall of mounting hole, dead lever and fixed orifices grafting cooperation, the inside disk seat that is equipped with of valve body are equipped with the lining fluorine layer on the internal surface of disk seat, and the butterfly plate outside is equipped with the sealing layer, the sealing layer with lining fluorine layer butt cooperation forms sealedly. The utility model provides a flange formula butterfly valve has that the operation is reliable, two way seal is effectual characteristics, and butterfly plate and valve rod on it adopt dead lever fixed connection, have improved the reliability of this butterfly valve operation, and the sealing layer that the butterfly plate outside set up forms sealedly with the lining fluorine layer butt cooperation that sets up on the disk seat internal surface, has improved the sealed effect of this butterfly valve.

Description

Flange type butterfly valve

Technical Field

The utility model relates to the technical field of valves, specifically a flange formula butterfly valve.

Background

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, and mainly plays a role in cutting off and throttling on a pipeline. A 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, namely a valve which is opened and closed by rotating around a valve shaft, wherein a valve clack or a butterfly plate of a closing member is a disc.

The fluorine-lined butterfly valve is a component for realizing the on-off and flow control of a pipeline system, is widely applied in many fields of petroleum, chemical industry, metallurgy, water and electricity and the like, and generally comprises a valve body, a valve seat, a butterfly plate and a valve rod.

The butterfly valve is sealed to be hugged closely through the disk seat in butterfly plate and the valve body and forms sealedly usually, because the valve rod passes disk seat and butterfly plate fixed connection respectively, after using a period, leads to the joint of valve rod and butterfly plate to appear not hard up phenomenon easily like this, when opening or closing the butterfly valve, causes the phenomenon of relative pivoted between valve rod and the butterfly plate easily, has reduced the reliability of the operation of valve, has shortened the life of product.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides a flange formula butterfly valve has the stable characteristics of operation.

The technical scheme of the utility model is realized like this:

the utility model provides a flange formula butterfly valve, includes valve body, valve rod, butterfly plate, its characterized in that: the valve body includes valve body and lower valve body, go up the valve body with adopt bolted connection down between the valve body, the butterfly plate upper end is equipped with the mounting hole, the lower extreme of valve rod is equipped with the accommodation hole, be equipped with the dead lever that the symmetry set up in the accommodation hole, be equipped with the spring between the dead lever, be equipped with the fixed orifices that the symmetry set up on the lateral wall of mounting hole, the dead lever is in under the spring force effect with the fixed orifices cooperation of pegging graft, the butterfly plate lower extreme is equipped with articulated post, be equipped with the hinge hole down on the valve body, the hinge post with the hinge hole is articulated to be set up, the butterfly plate outside is equipped with the sealing layer, the butterfly plate parcel is in.

The utility model discloses further set up to: be located the valve rod with all cup jointed location buffer on the articulated post, buffer includes holding ring, silica gel pad, gasket, the holding ring is located and is close to one side of butterfly plate, the silica gel pad be located the holding ring with between the gasket.

The utility model discloses further set up to: the upper end and the lower end of the sealing layer are respectively provided with a fixing ring, and the fixing rings are in butt fit with the positioning rings.

The utility model discloses further set up to: and O-shaped rings are arranged between the sealing layer and the upper end surface and the lower end surface of the butterfly plate.

The utility model discloses further set up to: the valve body is internally provided with a valve seat, the inner surface of the valve seat is provided with a fluorine lining layer, and the sealing layer is abutted and matched with the fluorine lining layer to form sealing.

To sum up, the beneficial effects of the utility model are that: the utility model provides a flange formula butterfly valve has the operation reliably, two way seal is effectual characteristics, and butterfly plate and valve rod on it adopt dead lever fixed connection, have improved the reliability of this butterfly valve operation, and the lining fluorine layer butt cooperation that sets up on the sealing layer that the butterfly plate outside set up and the disk seat internal surface forms sealedly, has improved the sealed effect of this butterfly valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

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

fig. 2 is a half sectional view of a side view of the present invention;

fig. 3 is a cross-sectional view of a side view of the present invention;

fig. 4 is an enlarged view of the a-portion structure of the present invention.

Reference numerals: 1. a valve body; 101. an upper valve body; 102. a lower valve body; 103. a hinge hole; 2. a valve stem; 201. An accommodation hole; 3. a butterfly plate; 301. mounting holes; 302. a fixing hole; 303. a hinged column; 4. a valve seat; 5. A fluorine lining layer; 6. a filler; 7. pressing the sleeve; 8. fixing the rod; 9. a spring; 10. a sealing layer; 1001. a stationary ring; 11. an O-shaped ring; 12. a positioning ring; 13. a silica gel pad; 14. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the present invention.

The present invention is described below with reference to fig. 1-4:

the utility model provides a flange formula butterfly valve, includes valve body 1, valve rod 2, butterfly plate 3, valve body 1 includes valve body 101 and lower valve body 102, go up valve body 101 with adopt bolted connection between the valve body 102 down, 1 inside disk seat 4 that is equipped with of valve body, be equipped with lining fluorine layer 5 on the internal surface of disk seat 4, butterfly plate 3 with lining fluorine layer 5 butt cooperation forms sealedly, go up valve body 101 with the articulated position of valve rod 2 is equipped with filler 6, filler 6 is located valve body 1 with between the valve rod 2, filler 6 top is equipped with presses cover 7, press cover 7 with the cooperation of filler 6 butt is used for right go up valve body 101 with the articulated position of valve rod 2 seals.

The butterfly plate 3 upper end is equipped with mounting hole 301, the lower extreme of valve rod 2 is equipped with accommodation hole 201, be equipped with the dead lever 8 that the symmetry set up in the accommodation hole 201, be equipped with spring 9 between the dead lever 8, be equipped with the fixed orifices 302 that the symmetry set up on the lateral wall of installation hole 301, dead lever 8 be in spring 9 elastic force effect down with the cooperation of pegging graft of fixed orifices 302, dead lever 8 with the cooperation of pegging graft of fixed orifices 302 prevents valve rod 2 with relative slip has appeared between the butterfly plate 3, has improved valve rod 2 is right the nature controlled of butterfly plate 3.

The butterfly plate 3 lower extreme is equipped with hinge post 303, be equipped with hinge hole 103 on the valve body 102 down, hinge post 303 with hinge hole 103 is articulated to be set up and is convenient for right butterfly plate 3 rotates, the butterfly plate 3 outside is equipped with the sealing layer 10 that adopts FEP material to make, sealing layer 10 with all be equipped with O type circle 11 on the upper and lower two terminal surfaces of butterfly plate 3.

Be located the valve rod 2 with all cup jointed location buffer on the articulated column 303, location buffer includes holding ring 12, silica gel pad 13, gasket 14, holding ring 12 is located and is close to one side of butterfly plate 3, silica gel pad 13 is located holding ring 12 with between the gasket 14, holding ring 12 is used for right valve rod 2 with the articulated column 303 leads and fixes a position, is convenient for valve rod 2 with the installation of articulated column 303, the upper and lower both ends of sealing layer 10 all are equipped with solid fixed ring, gu fixed ring 1001 with the cooperation of holding ring 1001 12 butt is used for sealing layer 10 with the butt position of holding ring 12 seals, gu fixed ring 1001 with when 12 butt of holding ring is joined in marriage, silica gel pad 13, gasket 14 are used for the buffering.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a flange formula butterfly valve, includes valve body (1), valve rod (2), butterfly plate (3), its characterized in that: the valve body (1) comprises an upper valve body (101) and a lower valve body (102), the upper valve body (101) is connected with the lower valve body (102) through bolts, a mounting hole (301) is formed in the upper end of the butterfly plate (3), a containing hole (201) is formed in the lower end of the valve rod (2), fixing rods (8) which are symmetrically arranged are arranged in the containing hole (201), springs (9) are arranged between the fixing rods (8), fixing holes (302) which are symmetrically arranged are formed in the side wall of the mounting hole (301), the fixing rods (8) are matched with the fixing holes (302) in a splicing mode under the elastic action of the springs (9), a hinge column (303) is arranged at the lower end of the butterfly plate (3), a hinge hole (103) is formed in the lower valve body (102), the hinge column (303) is hinged with the hinge hole (103), a sealing layer (10) is arranged on the outer side of the butterfly plate (, the butterfly plate (3) is wrapped in the sealing layer (10).

2. A flange butterfly valve according to claim 1, characterised in that: be located valve rod (2) with all cup jointed location buffer on articulated post (303), buffer includes holding ring (12), silica gel pad (13), gasket (14), holding ring (12) are located and are close to one side of butterfly plate (3), silica gel pad (13) are located holding ring (12) with between gasket (14).

3. A flange butterfly valve according to claim 2, characterized in that: the upper end and the lower end of the sealing layer (10) are respectively provided with a fixing ring (1001), and the fixing rings (1001) are in butt fit with the positioning rings (12).

4. A flange butterfly valve according to claim 1, characterised in that: and O-shaped rings (11) are arranged between the sealing layer (10) and the upper end surface and the lower end surface of the butterfly plate (3).

5. A flange butterfly valve according to claim 1, characterised in that: the valve body (1) is internally provided with a valve seat (4), the inner surface of the valve seat (4) is provided with a fluorine lining layer (5), and the sealing layer (10) is abutted and matched with the fluorine lining layer (5) to form sealing.