CN210637522U

CN210637522U - Self-sealing butterfly valve

Info

Publication number: CN210637522U
Application number: CN201921536787.8U
Authority: CN
Inventors: 徐鹏
Original assignee: Wuhan Qingshan Beihu Nanfeng Equipment Co Ltd
Current assignee: Wuhan Qingshan Beihu Nanfeng Equipment Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-29
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a self sealss butterfly valve, including pipeline, case, valve rod, left spacing and the right spacing, the case sets up in the pipeline, the valve rod with the case is fixed to be set up, the valve rod passes the pipeline, the valve rod with the pipeline forms a revolute pair, a left side spacing with the right spacing is fixed the setting respectively on the internal surface of pipeline, a left side spacing with the fixed sealing washer that is equipped with respectively on the spacing in the right side, work as when the self sealss butterfly valve is in the closure state, the sealing washer all with the mutual butt of case adopts this kind of butterfly valve, when reaching the accurate butterfly valve of adjusting to the closure position, can also make its leakproofness good mesh.

Description

Self-sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve field, concretely relates to self sealss butterfly valve.

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 which is opened and closed by a closing member (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft, and the produced butterfly valve has the following problems due to the production and manufacturing reasons of the existing butterfly valve: 1. when the valve rod of the butterfly valve is adjusted to the closed position, the butterfly valve is not actually in the closed state, namely the butterfly valve cannot be accurately adjusted to the closed position; 2. the butterfly valve is not very good in sealing effect, has the problem of leakage, and therefore the existing problem is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a self sealss butterfly valve reaches the accuracy and adjusts the butterfly valve to the closed position in, can also make the good purpose of its leakproofness.

In order to achieve the above object, the utility model relates to a self sealss butterfly valve, including pipeline, case, valve rod, left spacing and right spacing, the case sets up in the pipeline, the valve rod with the case is fixed to be set up, the valve rod passes the pipeline, the valve rod with the pipeline forms a revolute pair, a left side spacing with the right side spacing is fixed the setting respectively on the internal surface of pipeline, a left side spacing with it is equipped with the sealing washer to fix respectively on the right side spacing, works as when the self sealss butterfly valve is in the closure state, the sealing washer all with the mutual butt of case.

Furthermore, the left limiting strip, the right limiting strip and the sealing ring are all designed in a semicircular shape.

Further, a handle is arranged on the valve rod.

Further, the right limiting strip and the left limiting strip are both stuck on the inner surface of the pipeline.

Further, the sealing ring is an elastic gasket.

Compared with the prior art, the utility model, its beneficial effect is:

make the case rotatory round the center of valve rod through twisting the valve rod of moving the butterfly valve, when the valve rod is rotatory to the position that can not rotate, this moment, case and sealing washer butt each other promptly, at this moment, operating personnel just knows this butterfly valve and has been in encapsulated situation, owing to all be equipped with the sealing washer on left spacing strip and the right spacing strip, then can realize when this butterfly valve is in the closure, the problem of revealing prevents to appear in the sealed between case and the pipeline.

Drawings

Fig. 1 is a front view of a self-sealing butterfly valve of the present invention;

fig. 2 is a rear view of a self-sealing butterfly valve of the present invention;

3 fig. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3 of 3 a 3 self 3- 3 sealing 3 butterfly 3 valve 3 according 3 to 3 the 3 present 3 invention 3. 3

In the figure: 1. a pipeline; 2. a valve core; 3. a valve stem; 4. a left limit strip; 5. a right limit strip; 6. and (5) sealing rings.

Detailed Description

In order to explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following embodiments are described in detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.

Referring to fig. 1, and also referring to fig. 2-3, the present invention provides an embodiment:

the utility model provides a for realize above-mentioned purpose, the utility model relates to a self sealss butterfly valve, including pipeline 1, case 2, valve rod 3, left spacing 4 and right spacing 5, case 2 sets up in the pipeline 1, valve rod 3 with case 2 is fixed to be set up, valve rod 3 passes pipeline 1, valve rod 3 with pipeline 1 forms a revolute pair, left side spacing 4 with right spacing 5 is fixed the setting respectively on the internal surface of pipeline 1, left side spacing 4 with it is equipped with sealing washer 6 to fix respectively on the spacing 5 in the right side, works as when the self sealss butterfly valve is in the closure state, sealing washer 6 all with 2 mutual butts of case.

The valve rod 3 of the butterfly valve is screwed to enable the valve core 2 to rotate around the center of the valve rod 3, when the valve rod 3 rotates to a position incapable of rotating, namely the valve core 2 and the sealing ring 6 are abutted against each other, at the moment, an operator knows that the butterfly valve is in a sealing state, and because the sealing rings 6 are arranged on the left limiting strip 4 and the right limiting strip 5, when the butterfly valve is closed, the valve core 2 and the pipeline 1 can be sealed, so that the problem of leakage is prevented;

furthermore, the left limiting strip 4, the right limiting strip 5 and the sealing ring 6 are all designed in a semicircular shape.

Because the leakage of the butterfly valve generally occurs at the contact part of the valve core 2 and the pipeline 1, the leakage problem can occur once a gap occurs, and the semicircular design is adopted, so that the contact parts of all the valve cores 2 and the pipeline 1 can be covered, and the sealing effect of the butterfly valve can be enhanced;

further, a handle is arranged on the valve rod 3.

The valve rod 3 is convenient for operators to screw;

further, the right limiting strip 5 and the left limiting strip 4 are both stuck on the inner surface of the pipeline 1.

The fixation in a sticking way can realize convenient installation and disassembly, and the left limiting strip 4 and the right limiting strip 5 are convenient to replace;

further, the seal ring 6 is an elastic washer.

Adopt the elastic washer can be so that when the elastic washer atress, the elastic washer can produce elastic deformation, and the part that produces deformation can fill the clearance department that exists between case 2 and the pipeline 1, and then can make the sealed effect of this butterfly valve more outstanding.

Claims

1. A self sealss butterfly valve which characterized in that: the self-sealing butterfly valve is characterized by comprising a pipeline (1), a valve core (2), a valve rod (3), a left limiting strip (4) and a right limiting strip (5), wherein the valve core (2) is arranged in the pipeline (1), the valve rod (3) and the valve core (2) are fixedly arranged, the valve rod (3) penetrates through the pipeline (1), the valve rod (3) and the pipeline (1) form a revolute pair, the left limiting strip (4) and the right limiting strip (5) are fixedly arranged on the inner surface of the pipeline (1) respectively, a sealing ring (6) is fixedly arranged on the left limiting strip (4) and the right limiting strip (5) respectively, and when the self-sealing butterfly valve is in a closed state, the sealing ring (6) is abutted to the valve core (2) mutually.

2. The self-sealing butterfly valve of claim 1, wherein: the left limiting strip (4), the right limiting strip (5) and the sealing ring (6) are all designed in a semicircular shape.

3. The self-sealing butterfly valve of claim 1, wherein: and a handle is arranged on the valve rod (3).

4. The self-sealing butterfly valve of claim 1, wherein: the right limiting strip (5) and the left limiting strip (4) are both stuck on the inner surface of the pipeline (1).

5. The self-sealing butterfly valve of claim 1, wherein: the sealing ring (6) is an elastic gasket.