阅读说明：本技术 一种防冲刷蝶阀 (Scour prevention butterfly valve ) 是由 黄延军 其他发明人请求不公开姓名 于 2020-07-03 设计创作，主要内容包括：本发明涉及一种防冲刷蝶阀,所述的防冲刷蝶阀包括：具有进口以及出口的阀体、以可旋转的方式设置于所述阀体上的阀杆、固定设置于所述阀杆上的蝶板,所述蝶板侧面环绕设置有密封圈,所述防冲刷蝶阀还包括调控件以及蝶板防护机构,当所述蝶板开启后,所述调控件控制所述蝶板防护机构贴合于所述蝶板靠近进口的一侧以防止所述蝶板被介质冲击。本发明的优点在于：通过设置蝶板防护机构以及锁定机构,当使蝶阀开启时,凸轮能够控制防护板向蝶板方向靠近并将蝶板上的密封圈封盖住,从而可以对密封圈起到保护作用,防止介质对密封圈的冲刷,提高了蝶阀的使用寿命。(The invention relates to an anti-scouring butterfly valve, which comprises: the valve body that has import and export, with rotatable mode set up in valve rod on the valve body, fixed set up in butterfly plate on the valve rod, the butterfly plate side is encircleed and is provided with the sealing washer, the scour prevention butterfly valve is still including transferring controlling part and butterfly plate protection machanism, works as the butterfly plate is opened the back, transfer controlling part control butterfly plate protection machanism laminating in one side that the butterfly plate is close to the import is in order to prevent the butterfly plate is strikeed by the medium. The invention has the advantages that: through setting up butterfly plate protection machanism and locking mechanical system, when making the butterfly valve open, the cam can control the guard plate and be close to and cover the sealing washer on the butterfly plate to the butterfly plate direction to can play the guard action to the sealing washer, prevent that the medium from to the washing away of sealing washer, improve the life of butterfly valve.)

1. An anti-erosion butterfly valve, the anti-erosion butterfly valve comprising: the valve body that has import and export, with rotatable mode set up in valve rod on the valve body, fixed set up in butterfly plate on the valve rod, the butterfly plate side is encircleed and is provided with the sealing washer, its characterized in that, the scour prevention butterfly valve still includes transfer controlling part and butterfly plate protection machanism, works as the back is opened to the butterfly plate, transfer controlling part control the laminating of butterfly plate protection machanism fits the butterfly plate is close to one side of import in order to prevent the sealing washer is strikeed by the medium.

2. An erosion control butterfly valve in accordance with claim 1, wherein said butterfly plate guard mechanism comprises:

the protective cover is covered on one side of the butterfly plate;

the sliding rod penetrates through the butterfly plate to be in sliding connection with the butterfly plate in a direction perpendicular to the butterfly plate, one end of the sliding rod is fixedly connected with the butterfly plate protective cover, and the other end of the sliding rod is connected with a shifting lever;

the elastic piece is abutted between the butterfly plate and the protective cover,

the regulating and controlling piece is abutted to the shifting rod, and after the butterfly plate is rotated and opened, the regulating and controlling piece abuts to the shifting rod, so that the protective cover is tightly attached to the butterfly plate and covers one side, close to the inlet, of the butterfly plate.

3. An erosion-proof butterfly valve according to claim 2, wherein the adjusting member comprises a cam and a link fixedly connected to the cam, the link is fixedly arranged on the valve body, the link is coaxial with the valve rod, the lever abuts against the cam, and the cam can push the lever to a side away from the butterfly plate along with rotation of the butterfly plate, so that the protective cover can cover the butterfly plate.

4. An erosion-resistant butterfly valve according to claim 3, wherein the valve body is provided with an annular valve seat, when the butterfly plate is closed, the sealing ring is tightly attached to the valve seat to block media on two sides of the butterfly plate, and when the butterfly plate is opened, the protection cover can be covered on one side of the sealing ring close to the inlet.

5. The erosion protection butterfly valve of claim 4, wherein the protective cover comprises a sector parallel to the butterfly plate and a side wall portion extending along an outer edge of the sector, the side wall portion overlying the seal ring when the sector is superimposed on the butterfly plate to prevent the seal ring from being media-flushed.

6. The erosion prevention butterfly valve of claim 3, wherein the butterfly plate is provided with a first connecting portion and a second connecting portion, the first connecting portion is fixedly connected with the valve rod, the second connecting portion is rotatably connected with the connecting rod, and the butterfly plate can be driven to rotate by rotating the valve rod.

7. The erosion prevention butterfly valve of claim 6, wherein the connecting rod is sleeved with a support sleeve, a lower end of the support sleeve abuts against the valve body, and an upper end of the support sleeve abuts against the second connecting portion.

8. An anti-scour butterfly valve according to claim 1, wherein the valve stem is provided at an upper end thereof with a locking mechanism comprising: be fixed in lock dish on the valve body and be fixed in the collet on the valve rod, a plurality of closure openings have been seted up on the lock dish, the collet can be blocked in the closure opening so that the valve rod with the valve body is fixed.

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to an anti-scouring butterfly valve.

Background

The butterfly valve is a valve which utilizes a circular butterfly plate to rotate along with a valve rod to open, close and adjust a fluid channel. Most butterfly valves can be used for controlling a conveying switch of suspended solid particle media, and can also be used for controlling the conveying switch of powder and particle media according to the strength of a sealing piece, so that the butterfly valves are widely used in the fields of petroleum, chemical engineering, metallurgy, electric power, food, medicine, water supply and drainage, gas conveying and the like. The multi-level three-eccentric metal sealing butterfly valve is widely applied in the butterfly valve and comprises a valve body, a butterfly plate, a valve shaft, a sealing ring and a sealing ring pressing plate, wherein the butterfly valve is eccentrically arranged in the valve body, the valve shaft is eccentrically arranged on the butterfly plate, the butterfly plate is controlled to be opened and closed, the sealing ring is arranged on the periphery of the butterfly plate, the sealing ring pressing plate is fixed to the sealing ring, and the sealing effect is achieved when the valve is closed.

The butterfly plate sealing ring of the butterfly valve is formed by overlapping a metal plate and a graphite plate, is washed by a high-speed flowing medium when the valve is fully opened, and is often washed away by the graphite in an interlayer, so that the sealing ring is loosened to cause the loss of the sealing performance of the valve, and the application of the valve in some systems is limited.

Disclosure of Invention

Therefore, it is necessary to provide an anti-erosion butterfly valve, which is provided with a butterfly plate protection structure, and can prevent a seal ring from being eroded and worn by a medium in an opening state of the butterfly plate.

The invention discloses an anti-scouring butterfly valve, which comprises: the valve body that has import and export, with rotatable mode set up in valve rod on the valve body, fixed set up in butterfly plate on the valve rod, the butterfly plate side is encircleed and is provided with the sealing washer, the scour prevention butterfly valve is still including transferring controlling part and butterfly plate protection machanism, works as the butterfly plate is opened the back, transfer controlling part control butterfly plate protection machanism laminating in one side that the butterfly plate is close to the import is in order to prevent the sealing washer is strikeed by the medium.

In one embodiment, the butterfly plate guard mechanism includes: the protection casing, slide bar, elastic component. The protective cover is covered on one side of the butterfly plate; the sliding rod penetrates through the butterfly plate in a direction perpendicular to the butterfly plate to be in sliding connection with the butterfly plate, one end of the sliding rod is fixedly connected with the butterfly plate protective cover, and the other end of the sliding rod is connected with a shifting lever; the elastic piece is abutted between the butterfly plate and the protective cover, the adjusting piece is abutted with the shifting rod, and after the butterfly plate is rotated and opened, the adjusting piece abuts against the shifting rod, so that the protective cover is tightly attached to the butterfly plate and covers one side, close to the inlet, of the butterfly plate.

In one embodiment, the regulating member includes a cam and a connecting rod fixedly connected to the cam, the connecting rod is fixedly disposed on the valve body, the connecting rod is coaxial with the valve rod, the shift lever abuts against the cam, and the cam can push the shift lever to a side away from the butterfly plate along with rotation of the butterfly plate, so that the protective cover can be covered on the butterfly plate.

In one embodiment, an annular valve seat is arranged on the valve body, when the butterfly plate is closed, the sealing ring is tightly attached to the valve seat to block media on two sides of the butterfly plate, and when the butterfly plate is opened, the protective cover can cover one side, close to the inlet, of the sealing ring.

In one embodiment, the protective cover comprises a sector part and a side wall part, the sector part is parallel to the butterfly plate, the side wall part extends along the outer edge of the sector part, and when the sector part is overlapped with the butterfly plate, the side wall part covers the sealing ring to prevent the sealing ring from being washed by media.

In one embodiment, a first connecting portion and a second connecting portion are arranged on the butterfly plate, the first connecting portion is fixedly connected with the valve rod, the second connecting portion is rotatably connected with the connecting rod, and the butterfly plate can be driven to rotate by rotating the valve rod.

In one embodiment, the connecting rod is sleeved with a support sleeve, the lower end of the support sleeve abuts against the valve body, and the upper end of the support sleeve abuts against the second connecting part.

In one embodiment, the upper end of the valve rod is provided with a locking mechanism, which comprises: be fixed in lock dish on the valve body and be fixed in the collet on the valve rod, a plurality of closure openings have been seted up on the lock dish, the collet can be blocked in the closure opening so that the valve rod with the valve body is fixed.

The invention has the advantages that: through setting up butterfly plate protection mechanism and adjusting control spare, when making the butterfly valve open, adjusting control spare can control the protection casing to be close to and cover the sealing washer on the butterfly plate to can play the guard action to the sealing washer, prevent that the medium from to the washing away of sealing washer, improved the life of butterfly valve.

Drawings

FIG. 1 is a semi-sectional view of an anti-erosion butterfly valve provided in accordance with the present invention, with the butterfly valve in a closed state;

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a semi-sectional view of another operating condition of an anti-erosion butterfly valve of the present invention, with the butterfly valve in an open position;

fig. 4 is a cross-sectional view taken along the direction B-B of fig. 3 according to the present invention.

In the figure, a valve body 1, an inlet 11, an outlet 12, a valve rod 2, a butterfly plate 3, a sealing ring 31, a first connecting part 32, a second connecting part 33, a regulating part 4, a cam 41, a connecting rod 42, a supporting sleeve 43, a butterfly plate protection mechanism 5, a protective cover 51, a fan-shaped part 511, a side wall part 512, a sliding rod 52, a deflector rod 53, an elastic part 54, a valve seat 6, a locking mechanism 7, a locking disc 71 and a locking clamp 72 are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the invention discloses an anti-erosion butterfly valve, which comprises: valve body 1 with import 11 and export 12, with rotatable mode set up in valve rod 2 on the valve body 1, fixed set up in butterfly plate 3 on the valve rod 2, 3 sides of butterfly plate encircle and are provided with sealing washer 31, the scour prevention butterfly valve is still including transferring controlling part 4 and butterfly plate protection machanism 5, works as butterfly plate 3 opens the back, transfer controlling part 4 control butterfly plate protection machanism 5 laminate in one side that butterfly plate 3 is close to import 11 is in order to prevent sealing washer 31 is strikeed by the medium.

Preferably, the butterfly plate guard mechanism 5 includes: a protective cover 51, a slide rod 52, a shift lever 53 and an elastic piece 54. The protective cover 51 can be covered on one side of the butterfly plate 3; the sliding rod 52 penetrates through the butterfly plate 3 in a direction perpendicular to the butterfly plate 3 to be in sliding connection with the butterfly plate 3, one end of the sliding rod 52 is fixedly connected with the protective cover 51 of the butterfly plate 3, and the other end of the sliding rod is connected with a shifting rod 53; the elastic piece 54 abuts between the butterfly plate 3 and the protective cover 51, the adjusting piece 4 abuts against the shifting rod 53, and after the butterfly plate 3 is rotated and opened, the adjusting piece 4 abuts against the shifting rod 53, so that the protective cover 51 is tightly attached to the butterfly plate 3 and covers one side of the butterfly plate 3 close to the inlet 11.

It should be noted that in the present embodiment, two sliding rods 52 are disposed on the protective cover 51, and the sliding rods 52 pass through the butterfly plate 3 and are connected to the shift lever 53.

It should be noted that, an annular valve seat 6 is arranged on the valve body 1, when the butterfly plate 3 is closed, the sealing ring 31 is tightly attached to the valve seat 6 to block the inlet 11 and the outlet 12, and when the butterfly plate 3 is opened, the protective cover 51 is tightly attached to the butterfly plate 3 and can be covered on one side of the sealing ring 31 close to the inlet 11.

Further, the protection cover 51 includes a sector 511 and a side wall 512, the sector 511 is parallel to the butterfly plate 3, the side wall 512 extends along the outer edge of the sector 511, when the sector 511 overlaps the butterfly plate 3, the side wall 512 covers the sealing ring 31 to prevent the sealing ring 31 from being washed by the medium.

Preferably, the adjusting and controlling member 4 includes a cam 41 and a link 42 fixedly connected to the cam 41, the link 42 is fixedly disposed on the valve body 1, the link 42 is coaxial with the valve rod 2, the shift lever 53 abuts against the cam 41, and the cam 41 can push the shift lever 53 toward a side away from the butterfly plate 3 with the rotation of the butterfly plate 3, so that the protective cover 51 can be attached to the butterfly plate 3.

Preferably, a first connecting portion 32 and a second connecting portion 33 are arranged on the butterfly plate 3, the first connecting portion 32 is fixedly connected with the valve rod 2, the second connecting portion 33 is rotatably connected with the connecting rod 42, and the butterfly plate 3 can be driven to rotate by rotating the valve rod 2.

Preferably, the connecting rod 42 is sleeved with a supporting sleeve 43, a lower end of the supporting sleeve 43 abuts against the valve body 1, and an upper end of the supporting sleeve 43 abuts against the second connecting portion 33.

Preferably, the upper end of the valve rod 2 is provided with a locking mechanism 7, which comprises: the locking device comprises a locking disc 71 fixed on the valve body 1 and a locking clamp 72 fixed on the valve rod 2, wherein a plurality of locking openings (not shown) are formed in the locking disc 71, and the locking clamp 72 can be clamped into the locking openings so that the valve rod 2 is fixed with the valve body 1.

The working mode of the invention is, as shown in fig. 1 and fig. 2, the butterfly valve is in the closed state, the deflector 53 is abutted against the proximal side of the cam 41, a certain gap is provided between the protective cover 51 and the butterfly plate 3, so that the butterfly plate 3 can be tightly attached to the valve seat 6, when the butterfly valve needs to be opened, the locking clamp 72 is separated from the locking opening, the locking clamp 72 is rotated to drive the valve rod 2 to rotate, so as to drive the butterfly plate 3 to rotate, in the rotation process of the butterfly plate 3, the cam 41 abuts against the deflector 53, and the deflector 53 is pushed towards the side far from the butterfly plate 3, so that the protective cover 51 is gradually attached to the surface of the butterfly plate 3, and the elastic piece 54 is simultaneously extruded, when the butterfly plate 3 rotates 90 degrees, the sector 511 of the protective cover 51 is attached to the front surface of the butterfly plate 3, the side wall 512 is attached to the side surface of the butterfly plate 3, so as to cover the sealing ring 31, in combination with fig. 3 and fig. 4, the seal ring 31 is protected by the protective cover 51 and is not impacted by the front side of the medium, so that the seal ring 31 is protected, and the service life of the seal ring 31 is prolonged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.