CN218818231U

CN218818231U - High security butterfly valve

Info

Publication number: CN218818231U
Application number: CN202222328141.9U
Authority: CN
Inventors: 成杰; 沈卫星
Original assignee: Dongtai Xinhang Marine Accessories Co ltd
Current assignee: Dongtai Xinhang Marine Accessories Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-04-07
Anticipated expiration: 2032-08-31

Abstract

The utility model belongs to the technical field of the sealing member technique and specifically relates to a high security butterfly valve, including outside valve body and case, the outside valve body medial surface is located case left side front end and has first arc sealing strip, and the outside valve body medial surface is located case right side rear end and has second arc sealing strip. The utility model discloses a high security butterfly valve is located the first arc sealing strip and the second arc sealing strip that the case both sides were fixed with internally mounted arc buffer in external valve body medial surface, can deal with the water hammer phenomenon that produces when closed and open through setting up at the upset closed end back, makes the whole pipeline security promote greatly; and the valve body is convenient to be safe by adopting a built-in layout, and the durability is more excellent.

Description

High security butterfly valve

Technical Field

The utility model belongs to the technical field of the sealing member technique and specifically relates to a high security 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 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 fluid 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.

In the pressure pipeline, the flow rate of water is suddenly changed due to some external reasons (such as sudden closing of a valve and sudden stop of a water pump unit), so that water hammer is caused, and the hydraulic phenomenon is called water hammer or water hammer.

The existing butterfly valve is simple in structure, has no mechanism for dealing with water hammer, and is limited in protection performance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, an improved high-safety butterfly valve is provided, and the problems that the existing butterfly valve is simple in structure, does not have a mechanism for dealing with the water hammer phenomenon, and is limited in protection performance are solved.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a high security butterfly valve, includes external valve body and case, the external valve body medial surface be located case left side front end and have first arc sealing strip, the external valve body medial surface be located case right side rear end and have second arc sealing strip, the external valve body in the top surface on offer the circular adjusting through-hole that is used for assembling the case, the external valve body in bottom surface middle part offer the circular assembly blind hole that is used for assembling the case, first arc sealing strip front end lateral wall and second arc sealing strip rear end lateral wall on have arc buffer, the external valve body lateral surface on offer with the inside arc gas guide mouth that is linked together of arc buffer.

The arc-shaped buffer device comprises an arc-shaped housing, an internal assembly frame, an internal reset spring and a telescopic piston, wherein the arc-shaped housing is fixed on the side wall of the front end of the first arc-shaped sealing strip and the side wall of the rear end of the second arc-shaped sealing strip, the internal assembly frame is fixed on the inner wall of the middle part of the arc-shaped housing, the internal reset spring is installed on the two side walls of the internal assembly frame, and the telescopic piston is fixed at the non-fixed connecting end of the internal reset spring.

And two side walls of the arc-shaped housing are provided with top liquid guide ports internally provided with metal filter screens.

Lateral control holes are formed in the outer side surfaces of the first arc-shaped sealing strip and the second arc-shaped sealing strip, and lateral limiting mechanisms used for limiting telescopic pistons are elastically assembled in the lateral control holes.

The lateral limiting mechanism comprises a lateral overturning rod elastically assembled in the lateral overturning groove, a lateral limiting block fixed at the top end of the outer side surface of the lateral overturning rod and an internal sealing extrusion block inserted in the lateral control hole.

The contact end of the lateral overturning rod is provided with a lateral limiting groove.

The utility model has the advantages that:

(1) The utility model discloses a high security butterfly valve is located the first arc sealing strip and the second arc sealing strip that the case both sides were fixed with internally mounted arc buffer in external valve body medial surface, can deal with the water hammer phenomenon that produces when closed and open through setting up at the upset closed end back, makes the whole pipeline security promote greatly;

(2) And the valve body is convenient to be safe by adopting a built-in layout, and the durability is more excellent.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an internal cross-sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the middle lateral limiting mechanism of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 and 2 show a high security butterfly valve, including external valve body 1 and case 2, 1 medial surface of external valve body is located 2 left sides front ends of case and has first arc sealing strip 3, 1 medial surface of external valve body is located 2 right sides rear ends of case and has second arc sealing strip 4, set up the circular adjusting through hole that is used for assembling case 2 on the top surface in the external valve body 1, the circular assembly blind hole that is used for assembling case 2 is seted up at bottom surface middle part in the external valve body 1, arc buffer has on 3 front end lateral walls of first arc sealing strip and the 4 rear end lateral walls of second arc sealing strip, set up the arc gas guide mouth 5 that is linked together with arc buffer on the 1 lateral surface of external valve body.

In order to cooperate with elastic buffering, the arc-shaped buffering device comprises an arc-shaped housing 6 fixed on the side wall of the front end of the first arc-shaped sealing strip 3 and the side wall of the rear end of the second arc-shaped sealing strip 4, an internal assembly frame 7 fixed on the inner wall of the middle part of the arc-shaped housing 6, internal reset springs 8 installed on the two side walls of the internal assembly frame 7 and a telescopic piston 9 fixed at the non-fixed connecting end of the internal reset spring 8.

In order to avoid internal blockage, two side walls of the arc-shaped housing 6 are provided with top liquid guide ports 10 internally provided with metal filter screens.

In order to improve the sealing performance in a closed state, lateral control holes 11 are formed in the outer side faces of the first arc-shaped sealing strip 3 and the second arc-shaped sealing strip 4, and a lateral limiting mechanism used for limiting the telescopic piston 9 is elastically assembled in the lateral control holes 11.

As shown in fig. 3, in order to cooperate with the extrusion to control the separation and the reset, a lateral turning groove 12 communicated with a lateral control hole 11 is formed on the inner side surface of the arc-shaped housing 6, and the lateral limiting mechanism comprises a lateral turning rod 13 elastically assembled inside the lateral turning groove 12, a lateral limiting block 14 fixed at the top end of the outer side surface of the lateral turning rod 13, and an internal sealing extrusion block 15 inserted inside the lateral control hole 11.

The lateral overturning rod 13 is inserted into the inner wall of the lateral overturning groove 12 through a lateral rotating shaft and movably assembled with the arc-shaped housing 6, and then the elastic overturning reset is controlled through an internal extrusion elastic sheet.

In order to improve the extrusion stability, a lateral limiting groove 16 is formed in the contact end of the lateral overturning rod 13.

The utility model discloses a high security butterfly valve is located case 2 both sides and is fixed with first arc sealing strip 3 and second arc sealing strip 4 of internally mounted arc buffer in external valve body 1 medial surface, can deal with the water hammer phenomenon that produces when closed and opening through setting up at the upset closed end back, makes the whole pipeline security promote greatly; and the valve body is convenient to be safe by adopting a built-in layout, and the durability is more excellent.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high security butterfly valve, includes external valve body (1) and case (2), characterized by: the inner side surface of the external valve body (1) is located at the front end of the left side of the valve core and is provided with a first arc-shaped sealing strip (3), the inner side surface of the external valve body (1) is located at the rear end of the right side of the valve core and is provided with a second arc-shaped sealing strip (4), the inner top surface of the external valve body (1) is provided with a circular adjusting through hole for assembling the valve core (2), the middle part of the inner bottom surface of the external valve body (1) is provided with a circular assembling blind hole for assembling the valve core (2), the front side wall of the first arc-shaped sealing strip (3) and the rear side wall of the second arc-shaped sealing strip (4) are provided with an arc-shaped buffer device, and the outer side surface of the external valve body (1) is provided with an arc-shaped gas guide hole (5) communicated with the inside of the arc-shaped buffer device.

2. A high safety butterfly valve in accordance with claim 1, wherein: the arc-shaped buffer device comprises an arc-shaped housing (6) fixed on the side wall of the rear end of the first arc-shaped sealing strip (3) and the side wall of the rear end of the second arc-shaped sealing strip (4), an internal assembly frame (7) fixed on the inner wall of the middle part of the arc-shaped housing (6), internal reset springs (8) installed on the two side walls of the internal assembly frame (7) and a telescopic piston (9) fixed at the non-fixed connecting end of the internal reset spring (8).

3. A high safety butterfly valve in accordance with claim 2, wherein: and top liquid guide ports (10) with built-in metal filter screens are formed in two side walls of the arc-shaped housing (6).

4. A high safety butterfly valve in accordance with claim 2, wherein: lateral control holes (11) are formed in the outer side surfaces of the first arc-shaped sealing strip (3) and the second arc-shaped sealing strip (4), and a lateral limiting mechanism used for limiting the telescopic piston (9) is elastically assembled in each lateral control hole (11).

5. The high safety butterfly valve of claim 4, wherein: the inner side surface of the arc-shaped housing (6) is provided with a lateral overturning groove (12) communicated with the lateral control hole (11), and the lateral limiting mechanism comprises a lateral overturning rod (13) elastically assembled inside the lateral overturning groove (12), a lateral limiting block (14) fixed at the top end of the outer side surface of the lateral overturning rod (13) and an internal sealing extrusion block (15) inserted inside the lateral control hole (11).

6. The high safety butterfly valve of claim 5, wherein: the outer side surface of the internal sealing extrusion block (15) is provided with a lateral limiting groove (16) at the contact end with a lateral overturning rod (13).