CN212226026U

CN212226026U - Butterfly valve

Info

Publication number: CN212226026U
Application number: CN202020574007.5U
Authority: CN
Inventors: 李德基; 余永寿; 蔡世康
Original assignee: Zhaoqing Zhengsu Technology Co ltd
Current assignee: Zhaoqing Zhengsu Technology Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-25
Anticipated expiration: 2030-04-16

Abstract

The utility model provides a butterfly valve, it includes valve body, valve rod, disk seat, butterfly plate and first sealing washer, the valve body with link up in the middle of the disk seat, disk seat detachably cover is established on the inner wall of valve body, the butterfly plate sets up in the disk seat, the valve rod passes valve body, disk seat and butterfly plate are fixed, first sealing washer cover is established the butterfly plate outside and with the inner wall butt of disk seat, the valve rod drives thereby the rotatory control of butterfly plate the open/close of butterfly valve. The utility model provides a butterfly valve is through setting up the detachable disk seat in the valve body, and the fungible uses the sealing washer of bulky, greatly reduced the cost of butterfly valve, simultaneously because disk seat and butterfly plate all are detachable, can change the butterfly plate of the disk seat of different materials according to fluidic chemical property in the in-service use process, make the use of butterfly valve convenient more nimble.

Description

Butterfly valve

Technical Field

The utility model belongs to the technical field of the pipeline valve technique and specifically relates to a butterfly valve is related to.

Background

In the chemical production or food and drug production process, complex pipeline design needs to be built, in the pipeline construction process, valves with various functions need to be arranged, and a butterfly valve is one of the important and commonly used valves. 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 which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The butterfly 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 existing butterfly valve adopts a sealing ring with a large size to penetrate through a valve body, and then a butterfly plate is arranged in the sealing ring, so that the cost of the sealing ring needed is high, and on the other hand, when fluid in a pipeline changes, the whole butterfly valve needs to be replaced to ensure that the butterfly valve adapts to the chemical property of new fluid, and the cost is high.

Therefore, it is desirable to provide a butterfly valve with a simple structure and low cost.

SUMMERY OF THE UTILITY MODEL

Therefore, a butterfly valve with a simple structure and low use cost is needed.

An embodiment of the utility model provides a butterfly valve, it includes valve body, valve rod, disk seat, butterfly plate and first sealing washer, the valve body with link up in the middle of the disk seat, disk seat detachably cover is established on the inner wall of valve body, the butterfly plate sets up in the disk seat, the valve rod passes valve body, disk seat and butterfly plate are fixed, first sealing washer cover is established the butterfly plate outside and with the inner wall butt of disk seat, the valve rod drives the butterfly plate is relative thereby valve body and the rotatory control of disk seat the open/close of butterfly valve.

Preferably, the butterfly valve further comprises a connecting seat, a connecting block and a handle, wherein a valve pipe is formed on one side of the valve body, the valve rod extends out of the valve pipe, the connecting seat is fixedly connected with the valve pipe, the connecting block is placed in the connecting seat and fixedly connected with the valve rod, meanwhile, the handle is fixedly connected with the connecting block, and the handle controls the valve rod to rotate so as to control the butterfly valve to be opened or closed.

Preferably, the surface of the connecting seat is provided with an angle scale which can be set to be 0-90 degrees, so that the rotating angle of the handle can be accurately controlled, and the flow can be accurately controlled.

Preferably, the handle is further provided with a fixing lock, the fixing lock is connected with the handle, a first end of the fixing lock abuts against the connecting seat to enable the handle not to rotate, and a second end of the fixing lock is pressed to enable the first end of the fixing lock to be far away from the connecting seat to enable the handle to rotate. After the handle rotates for a certain angle, the handle can be fixed by the fixing lock and does not rotate any more, so that the flow control of the butterfly valve is ensured to be accurate, and the butterfly plate cannot rotate due to the impact of fluid on the butterfly plate, so that the flow is not changed.

Preferably, the first end of the fixing lock is provided with one or more ratchets, the connecting seat is provided with a fluted disc corresponding to the ratchets, and the handle cannot rotate when the ratchets and the fluted disc are meshed and fixed. The ratchet and the fluted disc are simply and reliably matched, and the handle can be easily fixed.

Preferably, be provided with one or more protruding arris on the surface of disk seat, the valve body inner wall be provided with protruding arris corresponding recess, protruding arris with the recess cooperation is fixed the disk seat.

Preferably, two ends of the valve seat are provided with sealing grooves, and second sealing rings are arranged in the sealing grooves. The second sealing ring is used for preventing leakage between the butterfly valve and the pipeline when the pipeline is connected with the two ends of the butterfly valve.

Preferably, the material of the valve seat comprises one or more of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene or fluorinated rubber.

Preferably, the material of the butterfly plate comprises one or more of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene or fluorinated rubber.

The utility model provides a butterfly valve is through setting up the detachable disk seat in the valve body, and the fungible uses the sealing washer of bulky, greatly reduced the cost of butterfly valve, simultaneously because disk seat and butterfly plate all are detachable, can change the butterfly plate of the disk seat of different materials according to fluidic chemical property in the in-service use process, make the use of butterfly valve convenient more nimble.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of a butterfly valve according to an embodiment of the present invention.

Fig. 2 is a front view of the butterfly valve according to the embodiment of the present invention.

Fig. 3 is a side view of the butterfly valve according to the embodiment of the present invention.

Fig. 4 is a cross-sectional view of the B-B plane of the butterfly valve of fig. 3.

Fig. 5 is a top view of the butterfly valve according to the embodiment of the present invention.

Fig. 6 is an exploded schematic view of the butterfly valve and the fixing lock according to the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a first seal ring of a butterfly valve according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the present invention, the present invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

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 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 "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, an embodiment of the present invention provides a butterfly valve, which includes a valve body 1, a valve rod 9, a valve seat 2, a butterfly plate 3 and a first sealing ring 15, wherein the middle of the valve body 1 and the valve seat 2 is through for connecting pipelines at two ends of the butterfly valve, the inner diameter of the valve seat 2 is the same as the inner diameter of the pipeline, and leakage caused by a gap generated between the valve seat 2 and the pipeline is avoided during the use of the butterfly valve. The valve seat 2 is detachably sleeved on the inner wall of the valve body 1, and the outer diameter of the valve seat 2 corresponds to the inner diameter of the valve body 1, so that no gap exists between the valve seat 2 and the valve body 1. When the butterfly plate 3 is arranged in the valve seat 2, the butterfly plate 3 may be disc-shaped, and a through passage is provided in a radial direction of the butterfly plate 3, and the valve rod 9 passes through the valve body 1, the valve seat 2, and the butterfly plate 3 and is fixed. The valve rod 9 is fixed relative to the butterfly plate 3, and simultaneously the valve rod 9 can rotate 360 degrees relative to the valve body 1 and the valve seat 2, namely the valve rod 9 can drive the butterfly plate 3 to rotate in the valve seat 2, and the valve rod 9 drives the butterfly plate 3 to rotate relative to the valve body 1 and the valve seat 2 so as to control the opening/closing of the butterfly valve. First sealing washer 15 cover is established in the butterfly plate 3 outside and with the inner wall butt of disk seat 2, and first sealing washer 15 cover is established in discoid butterfly plate 3's external diameter department promptly, and when butterfly plate 3 is fixed the back, the first sealing washer 15 of establishing in the butterfly plate 3 outside and the inner wall butt of disk seat 2, at this moment, first sealing washer 15 and disk seat 2's inner wall production interference fit, effective reinforcing seal effect.

Referring to fig. 1 to 6, in a preferred embodiment, the butterfly valve further includes a connection seat 6, a connection block 10, and a handle 4. Valve body 1 forms valve pipe 7 in one side, valve pipe 7 communicates the inner wall of valve body 1, stretch out in valve pipe 7 from valve rod 9, connecting seat 6 is connected fixedly with valve pipe 7, connecting block 10 is placed in connecting seat 6 and is connected fixedly with valve rod 9, handle 4 is connected fixedly with connecting block 10 simultaneously, at this moment, connecting seat 6 is fixed for valve body 1, connecting block 10 is also fixed for valve rod 9, connecting block 10 can rotate and synchronous rotation along with valve rod 9 promptly, handle 4 is fixed back with connecting block 10, can drive the rotation of valve rod 9 through turning handle 4, thereby the rotation of handle 4 control valve rod 9 controls the opening/closing of butterfly valve.

Referring to fig. 1 and 5, in a preferred embodiment, an angle dial 8 is disposed on a surface of the connecting socket 6, the angle dial 8 may be set to 0 ° to 90 °, and the angle dials 8 may be disposed on two opposite ends of the surface of the connecting socket 6. When the butterfly valve is in a closed state, two ends of the handle 4 correspond to 0 degree of the angle dial 8, the handle 4 can rotate along the direction from small to large of the scales of the angle dial 8, the rotating angle of the handle 4, namely the rotating angle of the butterfly plate 3, can be determined through the reading of the angle dial 8, and therefore the rotating angle of the handle 4 can be accurately controlled, and the flow can be accurately controlled.

Referring to fig. 1, 2, 4 and 6, in a preferred embodiment, a fixing lock 5 is further disposed on the handle 4, the fixing lock 5 is disposed below the handle 4 and connected to the handle 4, and the fixing lock 5 can be connected to the handle 4 by using a pin mechanism (not specifically identified in the figures) to realize that the fixing lock 5 can rotate around the pin mechanism; the fixing lock 5 can also be provided with a cylindrical connecting shaft 19, meanwhile, a circular groove (not specifically marked in the figure) is arranged below the handle 4, and through the matching of the connecting shaft 19 and the circular groove, the fixing lock 5 can also realize that the fixing lock 5 can rotate around the connecting shaft 19. First end 12 of fixing lock 5 supports and leans on connecting seat 6, and is fixed with connecting seat 6 butt, makes handle 4 can not rotate, presses the second end 11 of fixing lock 5 and makes first end 12 of fixing lock 5 keep away from connecting seat 6, makes handle 4 rotate. The default state of the fixing lock 5 is fixedly abutted with the connecting seat 6, namely the handle 4 cannot rotate in the default state; in the working state, that is, when the handle 4 needs to be rotated, the second end 11 of the fixing lock 5 needs to be put down and pressed towards the handle 4, so that the first end 12 of the fixing lock 5 is separated from the connecting seat 6, and the handle 4 can be rotated. After the handle 4 rotates for a certain angle, the handle 4 can be fixed by the fixing lock 5 and does not rotate any more, so that the flow control of the butterfly valve is accurate, and the butterfly plate 3 cannot rotate due to the impact of fluid on the butterfly plate 3, so that the flow is not changed.

Referring to fig. 4 and 6, in a preferred embodiment, the first end 12 of the fixing lock 5 is provided with one or more ratchets 13, the connecting base 6 is provided with a toothed disc 14 corresponding to the ratchets 13, and the handle 4 cannot rotate when the ratchets 13 and the toothed disc 14 are engaged and fixed. The extension lines of the two ends of the fluted disc 14 form an included angle which is larger than or equal to 90 degrees. When the extension lines of the two tail ends of the fluted disc 14 form an included angle equal to 90 degrees, when the butterfly valve is in a closed state, the ratchet 13 of the fixed lock 5 is positioned at one tail end of the fluted disc 14, and at the moment, the tail end of the handle 4 corresponds to the 0-degree scale on the angle scale 8; when the butterfly valve is completely opened, the ratchets 13 of the fixing lock 5 are positioned at the other tail end of the fluted disc 14, and at the moment, the tail end of the handle 4 corresponds to 90-degree scales on the angle scale 8, so that the handle 4 can be ensured to rotate 90 degrees and can be fixed at any angle through the matching of the ratchets 13 and the fluted disc 14. When the angle formed by the extension lines of the two ends of the toothed disc 14 is larger than 90 °, the above limitation is not imposed. The ratchet 13 and toothed disc 14 are simple and reliable to fit and easily secure the handle 4.

Referring to fig. 1 and fig. 2, in a preferred embodiment, one or more protruding ribs 17 are disposed on the outer surface of the valve seat 2, a groove 18 corresponding to the protruding ribs 17 is disposed on the inner wall of the valve body 1, and the protruding ribs 17 and the groove 18 cooperate to fix the valve seat 2. During installation, the raised edge 17 of the valve seat 2 corresponds to the groove 18 of the valve body 1, and then the valve seat 2 is clamped into the valve body 1, so that the valve seat 2 can be detachably connected with the valve body 1 and cannot rotate in the valve body 1.

Referring to fig. 2, in a preferred embodiment, two ends of the valve seat 2 are respectively provided with a sealing groove (not specifically identified in the figure), and a second sealing ring 16 is disposed in the sealing groove. The second seal ring 16 is used to prevent leakage between the butterfly valve and the pipe when the pipe is connected to both ends of the butterfly valve.

In a preferred embodiment, the material of the valve seat 2 comprises one or more of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene or fluorinated rubber. The material of the butterfly plate 3 comprises one or more of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene or fluorinated rubber. In a further preferred embodiment, the valve seat 2 and the butterfly plate 3 may be made of the same material. Since the valve is often used in chemical production, the chemical property of the fluid in the pipeline can have a great influence on the butterfly valve, and thus the materials of the valve seat 2, the butterfly plate 3 and the sealing ring in the butterfly valve are determined, so when the fluid in the pipeline is acidic, the materials of the valve seat 2, the butterfly plate 3 and the first sealing ring 15 all need to be resistant to acid; when the fluid in the pipeline is alkaline, the material of valve seat 2, butterfly plate 3 and first sealing washer 15 all need be able to bear or endure alkaline, when the fluid in the pipeline is neutral and non-corrosive, the material of valve seat 2, butterfly plate 3 and first sealing washer 15 only need guarantee life can. Simultaneously, the cost of corrosion-resistant material is several times or tens times higher than ordinary material, consequently sets valve seat 2 and butterfly plate 3 to detachable, can change the valve seat 2 and the butterfly plate 3 of different materials according to the in service behavior, ability greatly reduced use cost.

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 the specific embodiments of the utility model, and the description thereof is specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a butterfly valve, its characterized in that, includes valve body, valve rod, disk seat, butterfly plate and first sealing washer, the valve body with link up in the middle of the disk seat, disk seat detachably cover is established on the inner wall of valve body, the butterfly plate sets up in the disk seat, the valve rod passes valve body, disk seat and butterfly plate are fixed, first sealing washer cover is established the butterfly plate outside and with the inner wall butt of disk seat, the valve rod drives the butterfly plate is relative thereby valve body and the rotatory control of disk seat the on/off of butterfly valve.

2. The butterfly valve of claim 1 further comprising a connecting seat, a connecting block, and a handle, wherein the valve body forms a valve tube on one side, the valve stem extends from the valve tube, the connecting seat is fixedly connected to the valve tube, the connecting block is disposed in the connecting seat and fixedly connected to the valve stem, and the handle is fixedly connected to the connecting block, the handle controls the rotation of the valve stem to control the opening/closing of the butterfly valve.

3. The butterfly valve of claim 2 wherein a surface of the attachment seat is provided with an angular scale.

4. The butterfly valve of claim 2 wherein said handle further includes a retainer lock, said retainer lock being coupled to said handle, a first end of said retainer lock abutting said coupling seat to prevent rotation of said handle, and depressing a second end of said retainer lock to move said first end of said retainer lock away from said coupling seat to allow rotation of said handle.

5. The butterfly valve of claim 4 wherein the first end of the retaining lock is provided with one or more ratchet teeth, the connecting base is provided with a toothed disc corresponding to the ratchet teeth, and the handle is prevented from rotating when the ratchet teeth and the toothed disc are engaged and fixed.

6. The butterfly valve of claim 1 wherein said valve seat has one or more raised ridges on an outer surface thereof, said valve body having grooves on an inner wall thereof corresponding to said raised ridges, said raised ridges and said grooves cooperating to secure said valve seat.

7. The butterfly valve of claim 1, wherein the valve seat has seal grooves disposed at both ends thereof, and a second seal ring is disposed in the seal grooves.

8. The butterfly valve of claim 1 wherein the valve seat material comprises one of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, or fluorinated rubber.

9. The butterfly valve of claim 1 wherein the material of the butterfly plate comprises one of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, or fluorinated rubber.