CN210950056U

CN210950056U - Desulfurization butterfly valve with prevent backward flow function

Info

Publication number: CN210950056U
Application number: CN201921772193.7U
Authority: CN
Inventors: 吴夏芬
Original assignee: Tianjin Bintel Valve Manufacturing Co Ltd
Current assignee: Tianjin Bintel Valve Manufacturing Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-07
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a desulfurization butterfly valve with prevent function of backward flow, including valve body and anti-return mechanism, the both sides of valve body all are provided with the flange, the activity is provided with the regulating spindle on the valve body, the regulating spindle is provided with the lead screw in the inside of valve body, the screw thread mirror image setting of lower extreme on the lead screw, the upper and lower end of lead screw is provided with first ball nut and second ball nut respectively, the valve body is inside to be provided with the first video disc of a plurality of and second video disc in the both sides of lead screw in the activity respectively, anti-return mechanism sets up the inside one side of keeping away from the lead screw in the valve body, anti-return mechanism comprises mount, first spring, oval piece and baffle, the inside one end of keeping away from the lead screw of valve body is provided with the mount, one side that the mount is. The utility model discloses simple structure, convenient to use, reasonable in design can prevent the fluid backward flow effectively, improves desulfurization effect, and sealed effect is better simultaneously, convenient control.

Description

Desulfurization butterfly valve with prevent backward flow function

Technical Field

The utility model relates to a butterfly valve technical field specifically is a desulfurization butterfly valve with prevent backward flow function.

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 part (valve clack or butterfly plate) as a disk and rotating around a valve shaft to open and close. 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 butterfly valve also has wide movement in the desulfurization process, but the existing butterfly valve can only simply control the flow of fluid and cannot prevent the backflow of the fluid to influence the desulfurization effect, and meanwhile, after the butterfly valve is used for a long time, the disc plate is easy to wear, and the air seal is lowered.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a desulfurization butterfly valve with prevent backward flow function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a desulfurization butterfly valve with backflow prevention function comprises a valve body and a backflow prevention mechanism, wherein flanges are arranged on two sides of the valve body, an adjusting shaft is movably arranged on the valve body, a screw rod is arranged inside the valve body through the adjusting shaft, thread mirrors at the upper end and the lower end of the screw rod are arranged, a first ball nut and a second ball nut are respectively arranged at the upper end and the lower end of the screw rod, a plurality of first discs and second discs are respectively and movably arranged on two sides of the screw rod inside the valve body, the backflow prevention mechanism is arranged on one side, away from the screw rod, inside the valve body, and consists of a fixing frame, a first spring, an oval block and a baffle plate, a fixing frame is arranged at one end, away from the screw rod, inside the valve body, a first spring is arranged on one side, close to the screw rod, of the fixing frame, the other end of the first spring is provided with the oval block, and a, and the baffle is provided with a flow guide hole matched with the elliptical block.

Preferably, a sealing gasket is arranged on the side face, away from the valve body, of the flange.

Preferably, the upper end of the adjusting shaft is provided with an adjusting block, and the adjusting block is provided with adjusting threads.

Preferably, a second spring is arranged between the first discs and between the second discs, and the first discs and the second discs are semicircular.

Preferably, the fixing frame is arranged in a cross shape.

Preferably, the baffle is provided with limiting plates at the upper end and the lower end of the side surface of one side, close to the oval block, of the baffle, and the limiting plates are provided with grooves matched with the oval block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with anti-return mechanism, anti-return mechanism sets up the one side of keeping away from the lead screw in the valve body, and anti-return mechanism comprises mount, first spring, oval piece and baffle, is provided with the water conservancy diversion hole with oval piece assorted on the baffle, through the effect of anti-return mechanism, can prevent the fluid backward flow effectively, prevent that the fluid backward flow from leading to polluting between the fluid, improve desulfurization effect;

2. the utility model discloses a be provided with the lead screw in the inside of valve body on the regulating spindle, the screw thread mirror image setting of lower extreme on the lead screw, the upper and lower end of lead screw is provided with first ball nut and second ball nut respectively, and the valve body is inside to be provided with the first video disc of a plurality of and second video disc in the both sides of lead screw activity respectively, through the effect of first video disc and second video disc, can increase the gas tightness of butterfly valve effectively, prevents that the butterfly plate from rotating wear and tear and lead to the gas tightness decline.

Drawings

FIG. 1 is a schematic view of the overall internal structure of a butterfly valve with backflow prevention function;

FIG. 2 is a schematic view of the installation of the first and second discs of a desulfurization butterfly valve with backflow prevention function according to the present invention;

fig. 3 is the utility model relates to a desulfurization butterfly valve ellipse block and limiting plate connection schematic diagram with prevent backward flow function.

In the figure: 1. a valve body; 2. a backflow prevention mechanism; 21. a fixed mount; 22. a first spring; 23. an elliptical block; 24. a baffle plate; 241. a flow guide hole; 3. a flange; 31. a gasket; 4. an adjustment shaft; 41. an adjusting block; 5. a screw rod; 51. a first ball nut; 52. a second ball nut; 6. a first disc; 7. a second disc; 8. a second spring; 9. and a limiting plate.

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 a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a desulfurization butterfly valve with backflow prevention function comprises a valve body 1 and a backflow prevention mechanism 2, wherein flanges 3 are welded on two sides of the valve body 1, an adjusting shaft 4 is installed on the valve body 1 through a through hole, a screw 5 is welded inside the valve body 1 by the adjusting shaft 4, threads on the upper end and the lower end of the screw 5 are distributed in a mirror image mode, the upper end and the lower end of the screw 5 are respectively in threaded connection with a first ball nut 51 and a second ball nut 52, a plurality of first disc sheets 6 and second disc sheets 7 are respectively installed on two sides of the screw 5 inside the valve body 1 through pin shafts, the backflow prevention mechanism 2 is installed on one side, far away from the screw 5, inside the valve body 1, the backflow prevention mechanism 2 is composed of a fixing frame 21, a first spring 22, an oval block 23 and a baffle plate 24, a fixing frame 21 is welded on one end, far away from the screw 5, of the fixing frame 21 is installed on one side, a baffle plate 24 is welded on one side, far away from the first spring 22, of the oval block 23 inside the valve body 1, and a flow guide hole 241 matched with the oval block 23 is formed in the baffle plate 24.

The side of the flange 3 far away from one side of the valve body 1 is adhered with a sealing gasket 31 through glue, so that the flange is favorably connected with a conveying pipe, and the connection stability is improved.

The upper end welding of regulating spindle 4 has regulating block 41, has seted up the regulation screw thread on the regulating block 41, is favorable to rotating regulating spindle 4 better.

The second springs 8 are arranged between the first discs 6 and between the second discs 7, and the first discs 6 and the second discs 7 are both semicircular, so that the first discs 6 and the second discs 7 can be quickly reset.

The fixing frame 21 is cross-shaped, which is beneficial to reducing the blockage of fluid.

Limiting plates 9 are welded at the upper end and the lower end of the side face, close to the elliptical block 23, of the baffle plate 24, grooves matched with the elliptical block 23 are formed in the limiting plates 9, and stability of the elliptical block 23 in the motion process is improved.

The working principle is as follows: when using this device, through rotating regulating spindle 4, can make lead screw 5 rotate, lead screw 5 rotates and makes first ball nut 51 and second ball nut 52 move, promote between the first dish 6 and the second dish 7 closed each other, the butterfly valve is opened, the effect of this device anti-return mechanism 2 can prevent the fluid backward flow effectively, prevent that the fluid backward flow from leading to polluting between the fluid, improve desulfurization effect, can increase the gas tightness of butterfly valve effectively, prevent that the butterfly plate from rotating wear and tear and leading to the gas tightness decline.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a desulfurization butterfly valve with prevent backward flow function, includes valve body (1) and backflow prevention mechanism (2), its characterized in that: the anti-backflow valve is characterized in that flanges (3) are arranged on two sides of the valve body (1), an adjusting shaft (4) is movably arranged on the valve body (1), a screw rod (5) is arranged inside the valve body (1) through the adjusting shaft (4), thread mirror images of the upper end and the lower end of the screw rod (5) are arranged, a first ball nut (51) and a second ball nut (52) are respectively arranged at the upper end and the lower end of the screw rod (5), a plurality of first disc sheets (6) and second disc sheets (7) are respectively movably arranged on two sides of the screw rod (5) inside the valve body (1), the anti-backflow mechanism (2) is arranged on one side, far away from the screw rod (5), inside the valve body (1), the anti-backflow mechanism (2) is composed of a fixing frame (21), a first spring (22), an oval block (23) and a baffle (24), and a fixing frame (21) is arranged at one end, far, one side that mount (21) is close to lead screw (5) is provided with first spring (22), the other end of first spring (22) is provided with oval piece (23), valve body (1) is inside to be provided with baffle (24) in one side that oval piece (23) kept away from first spring (22), be provided with on baffle (24) with oval piece (23) assorted water conservancy diversion hole (241).

2. The butterfly valve with a function of preventing backflow according to claim 1, wherein: and a sealing gasket (31) is arranged on the side surface of the flange (3) far away from one side of the valve body (1).

3. The butterfly valve with a function of preventing backflow according to claim 1, wherein: the upper end of adjusting shaft (4) is provided with regulating block (41), be provided with the regulation screw thread on regulating block (41).

4. The butterfly valve with a function of preventing backflow according to claim 1, wherein: and second springs (8) are arranged between the first discs (6) and between the second discs (7), and the first discs (6) and the second discs (7) are semicircular.

5. The butterfly valve with a function of preventing backflow according to claim 1, wherein: the fixing frame (21) is in a cross shape.

6. The butterfly valve with a function of preventing backflow according to claim 1, wherein: the baffle (24) is close to the upper and lower ends of one side of the elliptical block (23) and is provided with a limiting plate (9), and the limiting plate (9) is provided with a groove matched with the elliptical block (23).