CN217815008U

CN217815008U - High-temperature-resistant three-eccentric metal hard seal butterfly valve

Info

Publication number: CN217815008U
Application number: CN202220965803.0U
Authority: CN
Inventors: 刘震
Original assignee: Anshan General Valve Co ltd
Current assignee: Anshan General Valve Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-11-15
Anticipated expiration: 2032-04-25

Abstract

The utility model belongs to the technical field of three eccentric butterfly valves, concretely relates to three eccentric metal hard seal butterfly valves of high temperature resistance, which comprises a valve seat, the valve rod is installed in the inboard rotation of disk seat, fixed mounting has the valve plate on the valve rod, the bottom fixedly connected with base of disk seat, the side threaded connection of base has the external screw thread bolt, the one end fixedly connected with holder of disk seat, the fixation clamp is equipped with sealed face between holder and the disk seat, excessive inclined plane has been seted up to the inboard of disk seat, it has seted up the impact groove to link up on the excessive inclined plane, the top fixed mounting of disk seat has the apron, the contrast groove has been seted up on the apron, the bottom of valve rod is rotated and is installed the ball, the top side fixedly connected with contrast pole of valve rod, reduce the impact force that sealed face received through impacting the groove, improve the life of sealed face, wear-resisting heat treatment wearing layer receives fluidic direct washing away, guarantee the life of valve plate, the lubricating oil accessible of valve rod bottom is torn open and is got the external screw thread bolt and is carried out convenient change.

Description

High-temperature-resistant three-eccentric metal hard seal butterfly valve

Technical Field

The utility model belongs to the technical field of three eccentric butterfly valves, concretely relates to high temperature resistant three eccentric metal butterfly valves sealed firmly.

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 with a closing member which is a disc and rotates around a valve shaft to open and close. 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 industry in china is numerous, but not a valve strong country. In general, china has already taken a step in the world valve big country, but from the viewpoint of product quality, china still has a long gap from the valve strong country. The phenomena of low production concentration, low valve research and development capability matched with high-end products, low manufacturing technical level of the valve industry and the like still exist in the industry, and the import and export trade adverse difference is continuously expanded. There are absolutely not so many valve companies that can really survive in the market. However, such high-speed oscillation in the valve industry will bring a huge chance, and the oscillation result will make the market operate more rationally. The localization of high-end valves is often "frustrating". The basic parts become short boards which restrict the development of the manufacturing industry of China to high-end, and the government will continue to increase the localization of high-end equipment parts in twelve and five seasons.

The sealing surface of the existing triple eccentric butterfly valve is easily eroded by fluid, the service life is short, the edge of the valve plate is directly eroded by the fluid when the valve plate is opened, the abrasion speed is faster than that of other parts, in addition, the upper end and the lower end of the valve rod of the butterfly valve need to be lubricated, the service life of lubricating oil is short under the high-temperature condition, and frequent maintenance and replacement are needed.

SUMMERY OF THE UTILITY MODEL

The sealing surface of the existing triple eccentric butterfly valve is easily eroded by fluid, the edge part of the valve plate is directly eroded by the fluid when the valve plate is opened, the abrasion speed is higher than that of other parts, and in addition, lubricating oil of the valve rod needs to be frequently maintained and replaced. The utility model provides a three eccentric metal hard seal butterfly valves of high temperature resistance reduces the impact force that sealed face received through strikeing the groove, improves the life of sealed face, and wear-resisting thermal treatment wearing layer receives fluidic direct scouring, guarantees the life of valve plate, and the lubricating oil accessible of valve rod bottom is torn open and is got the external screw thread bolt and carry out convenient change.

The utility model provides a following technical scheme: the utility model provides a three eccentric metal hard seal butterfly valves of high temperature resistant, includes the disk seat, the inboard of disk seat is rotated and is installed the valve rod, fixed mounting has the valve plate on the valve rod, the bottom fixedly connected with base of disk seat, the side threaded connection of base has the external screw thread to tie, the one end fixedly connected with holder of disk seat, fixation clamp is equipped with sealed face between holder and the disk seat, excessive inclined plane has been seted up to the inboard of disk seat, it has seted up the impact groove to link up on the excessive inclined plane, the top fixed mounting of disk seat has the apron, the contrast groove has been seted up on the apron, the bottom of valve rod is rotated and is installed the ball, the top side fixedly connected with contrast pole of valve rod.

The impact grooves are arc-shaped channels, the number of the impact grooves is multiple, the impact grooves are arranged around the axis of the valve seat at equal intervals in the circumferential direction of the shaft, and one end port of each impact groove, which is close to the sealing surface, is obliquely arranged towards the axis direction of the valve seat.

Wherein, the inner wall of the impact groove is provided with a spiral rifling structure; when the valve plate is opened, a part of medium enters the impact groove and flows at an accelerated speed under the action of the rifling, so that the medium flows to the sealing surface to collide, the impact force on the sealing surface is reduced, and the service life of the sealing surface is prolonged.

Wherein, the side surface of the curved surface of the valve plate is circumferentially provided with a heat treatment wear-resistant layer; when the valve plate is opened, the wear-resistant heat treatment wear-resistant layer is directly washed by fluid, so that the service life of the valve plate is ensured.

Wherein, the side surface of one side of the valve seat is provided with an internal thread through hole which is in threaded connection with the external thread bolt; the lubricating oil accessible of valve rod bottom is torn open and is got the external screw thread bolt and carry out convenient change.

The center of the bottom surface of the valve rod is provided with a hemispherical groove matched with a ball, and the ball is in rolling connection with the inner bottom surface of the valve seat; the ball plays the roll supporting role, reduces the frictional force between the bottom of valve rod and the disk seat.

The number of the comparison grooves is two, an included angle between horizontal lines of the axes of the two comparison grooves connected with the valve rod is 90 degrees, and the comparison rods are fixedly installed along the radial direction of the valve rod; the operating personnel can judge the opening and closing state of the valve visually by comparing the position of the comparison rod between the two comparison grooves.

The utility model has the advantages that: when the valve plate is opened, a part of medium enters the impact groove and accelerates to flow under the action of the rifling, so that the medium collides with the medium flowing to the sealing surface, the impact force on the sealing surface is reduced, and the service life of the sealing surface is prolonged; when the valve plate is opened, the wear-resistant heat treatment wear-resistant layer is directly washed by fluid, so that the service life of the valve plate is ensured; the lubricating oil at the bottom of the valve rod can be conveniently replaced by detaching the external threaded bolt; the ball plays a role in rolling support, and the friction force between the bottom end of the valve rod and the valve seat is reduced; an operator can visually judge the opening and closing state of the valve by comparing the positions of the comparison rods between the two comparison grooves.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

Fig. 1 is a side cross-sectional view of the present invention;

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

fig. 3 is a top view of the present invention;

fig. 4 is a top cross-sectional view of the present invention;

in the figure: 1. a valve seat; 2. a valve stem; 3. a valve plate; 301. heat-treating the wear-resistant layer; 4. a clamping member; 5. A sealing surface; 6. a transition slope; 7. an impact groove; 8. a ball bearing; 9. an external threaded bolt; 10. a base; 11. A reference bar; 12. a cover plate; 13. and (4) comparing the tanks.

Detailed Description

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a high temperature resistant three eccentric metal butterfly valve sealed firmly, includes disk seat 1, the inboard of disk seat 1 is rotated and is installed valve rod 2, fixed mounting has valve plate 3 on the valve rod 2, the bottom fixedly connected with base 10 of disk seat 1, the side threaded connection of base 10 has external screw thread bolt 9, the one end fixedly connected with holder 4 of disk seat 1, fixedly clamped between holder 4 and the disk seat 1 has sealed face 5, excessive inclined plane 6 has been seted up to the inboard of disk seat 1, link up on excessive inclined plane 6 and seted up impact groove 7, the top fixed mounting of disk seat 1 has apron 12, contrast groove 13 has been seted up on the apron 12, the bottom of valve rod 2 is rotated and is installed ball 8, the top side fixedly connected with contrast pole 11 of valve rod 2.

The impact grooves 7 are arc-shaped channels, the number of the impact grooves 7 is multiple, the impact grooves are circumferentially arranged around the axis of the valve seat 1 at equal intervals, and one end port of each impact groove 7, which is close to the sealing surface 5, is obliquely arranged towards the axis of the valve seat 1.

The inner wall of the impact groove 7 is provided with a spiral rifling structure; when the valve plate 3 is opened, a part of medium enters the impact groove 7 and flows at an accelerated speed under the action of the rifling, so that the medium flows to the sealing surface 5 to collide, the impact force on the sealing surface 5 is reduced, and the service life of the sealing surface 5 is prolonged.

A heat treatment wear-resistant layer 301 is circumferentially arranged on the side surface of the curved surface of the valve plate 3; when the valve plate 3 is opened, the wear-resistant heat treatment wear-resistant layer 301 is directly washed by fluid, so that the service life of the valve plate 3 is ensured.

An internal thread through hole in threaded connection with an external thread bolt 9 is formed in the side face of one side of the valve seat 1; the lubricating oil of valve rod 2 bottom can be carried out convenient change by tearing open external screw bolt 9.

The center of the bottom surface of the valve rod 2 is provided with a hemispherical groove matched with a ball 8, and the ball 8 is in rolling connection with the inner bottom surface of the valve seat 1; the ball 8 plays a role of rolling support, and reduces the friction force between the bottom end of the valve rod 2 and the valve seat 1.

The number of the comparison grooves 13 is two, an included angle between horizontal lines of the axes of the two comparison grooves 13 connected with the valve rod 2 is 90 degrees, and the comparison rod 11 is fixedly installed along the radial direction of the valve rod 2; an operator can intuitively judge the opening and closing state of the valve by comparing the position of the comparison rod 11 between the two comparison grooves 13.

The utility model discloses a theory of operation and use flow: when valve plate 3 is opened, some medium gets into in strikeing groove 7, flow with higher speed under the effect of rifling, and then take place the striking with the medium of the sealed face 5 of flow direction, reduce the impact force that sealed face 5 received, improve the life of sealed face 5, valve plate 3 is when opening, wear-resisting heat treatment wearing layer 301 receives fluidic direct scouring, guarantee valve plate 3's life, the lubricating oil accessible of valve rod 2 bottom is torn open and is got external screw thread bolt 9 and carry out convenient change, when operating personnel rotated valve rod 2, ball 8 plays the roll supporting role, reduce the frictional force between the bottom of valve rod 2 and the disk seat 1, and operating personnel accessible contrast pole 11 is the audio-visual open-close state of judging valve in the position between two contrast grooves 13.

Claims

1. The utility model provides a three eccentric metal hard seal butterfly valves of high temperature resistant which characterized in that: the valve seat comprises a valve seat body, the inboard of disk seat is rotated and is installed the valve rod, fixed mounting has the valve plate on the valve rod, the bottom fixedly connected with base of disk seat, the side threaded connection of base has the external screw thread to tie, the one end fixedly connected with holder of disk seat, the fixation clamp is equipped with sealed face between holder and the disk seat, excessive inclined plane has been seted up to the inboard of disk seat, link up on the excessive inclined plane and seted up the impact groove, the top fixed mounting of disk seat has the apron, set up the contrast groove on the apron, the bottom of valve rod is rotated and is installed the ball, the top side fixedly connected with contrast pole of valve rod.

2. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: the impact grooves are arc-shaped channels, the number of the impact grooves is multiple, the impact grooves are arranged around the axis of the valve seat at equal intervals in the circumferential direction of the shaft, and one end port of each impact groove, which is close to the sealing surface, is obliquely arranged towards the axis direction of the valve seat.

3. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: the inner wall of the impact groove is provided with a spiral rifling structure.

4. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: and a heat treatment wear-resistant layer is circumferentially arranged on the side surface of the curved surface of the valve plate.

5. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: and an internal thread through hole in threaded connection with the external thread bolt is formed in the side surface of one side of the valve seat.

6. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: the bottom surface center of the valve rod is provided with a hemispherical groove matched with the ball, and the ball is in rolling connection with the inner bottom surface of the valve seat.

7. The high temperature resistant triple offset metal hard seal butterfly valve of claim 1, wherein: the quantity of comparing the groove is two, and two are compared the contained angle between the water flat line of groove connection valve rod and be 90 degrees, it is fixed to compare the radial direction installation of pole along the valve rod.