CN211501758U

CN211501758U - Butterfly valve capable of preventing backflow

Info

Publication number: CN211501758U
Application number: CN201922109135.2U
Authority: CN
Inventors: 洪丽芳; 陈志民
Original assignee: Tianjin Xintangda Valve Co ltd
Current assignee: Tianjin Xintangda Valve Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-15
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a butterfly valve of waterproof refluence, including valve body and inlet tube, outlet pipe, the valve body respectively with inlet tube, the perpendicular fixed connection of outlet pipe, the cavity has been seted up between inlet tube and the outlet pipe, is provided with the threaded rod in the cavity, the threaded rod below is equipped with the spliced pole, threaded cavity has been seted up in the spliced pole, the threaded rod extends to threaded cavity inside, the threaded rod passes through threaded connection with threaded cavity, the spliced pole bottom end fixedly connected with spoiler, inside the spoiler extended to the valve body through spacing pipe, spoiler and spacing pipe sliding connection, the valve body pipe wall corresponds the spoiler position and is equipped with the recess. Through the cooperation action of threaded rod, spliced pole, spoiler, reciprocate the spoiler, adjust the flow size as required, the spoiler can prevent the phenomenon of water refluence through rotating, and has further prevented intraductal rivers from leaking through setting up choked flow spare and closure member.

Description

Butterfly valve capable of preventing backflow

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a butterfly valve of waterproof refluence.

Background

A butterfly valve, also called a flap valve, is a simple and convenient regulating valve, 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 by taking a closing member (a valve clack or a butterfly plate) as a disk and mainly plays a role in cutting off and throttling on a pipeline. In the conventional technology, the phenomenon of water backflow frequently occurs in the butterfly valve, the use of a user is affected very much, the internal air pressure is easy to be unstable, and the equipment is further damaged.

The utility model aims at solving the problem and providing a butterfly valve capable of preventing water backflow.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a butterfly valve for preventing water backflow comprises a valve body, a water inlet pipe and a water outlet pipe, wherein the valve body is respectively and fixedly connected with the water inlet pipe and the water outlet pipe in a vertical mode, the water inlet pipe and the water outlet pipe are located at the same horizontal height, and threads are uniformly arranged on the water inlet pipe and the water outlet pipe;

the improved water-saving valve is characterized in that a cavity is formed between the water inlet pipe and the water outlet pipe, a threaded rod is arranged in the cavity, a handle is arranged at the upper end of the threaded rod, a connecting column is arranged below the threaded rod, a threaded cavity is formed in the connecting column, the threaded rod extends to the inside of the threaded cavity, the threaded rod is in threaded connection with the threaded cavity, a spoiler is fixedly connected to the bottom end of the connecting column, the spoiler extends to the inside of the valve body through a limiting pipe, the spoiler is in sliding connection with the limiting pipe, and a groove is formed in.

Preferably, a choke piece is arranged between the limiting pipe and the spoiler, and a choke piece is also arranged between one side of the groove, which is close to the water inlet pipe, and the spoiler.

Preferably, the flow blocking piece comprises a flow blocking column and a spring, a sliding groove is formed in the position, corresponding to the flow blocking column, of the pipe wall of the valve body, the flow blocking column is connected with the sliding groove in a sliding mode, and the bottom end of the flow blocking column is connected with the sliding groove in a springing mode through the spring.

Preferably, concave holes are formed in the surfaces of the two sides of the spoiler, and the diameter of each concave hole is equal to that of each flow blocking column.

Preferably, one side of the spoiler, which is close to the water outlet pipe, is provided with a water retaining wall, the upper end of the water retaining wall is rotationally connected with the pipe wall of the valve body, the water retaining wall is composed of three water retaining pieces, and the water retaining pieces are rotationally connected with each other.

Preferably, the water blocking piece upper end that is located the below is close to spoiler one side and offsets with top water blocking piece bottom, and is located the below the water blocking piece upper end is close to outlet pipe one side and offsets with top water blocking piece contactless, the top the water blocking piece upper end is close to spoiler one side and offsets with the valve body pipe wall, and the top the water blocking piece upper end is close to outlet pipe one side and valve body pipe wall contactless.

The utility model discloses possess following advantage:

1. the up-and-down movement of the spoiler can be realized through the matching action of the threaded rod, the connecting column and the spoiler, and a user can adjust the flow or close the valve according to the requirement;

2. by arranging the flow blocking piece, a gap between the flow blocking plate and the valve body can be blocked, and water flow in the pipe is prevented from leaking out of the pipe through the gap under a certain pressure to influence the use of a user;

3. the water blocking pieces are rotatably connected and only rotate towards the direction of the water outlet pipe, and when the water backflow phenomenon occurs in the pipe, the water blocking pieces can block a channel between the valve body and the water outlet pipe to prevent the water from flowing backwards;

4. the utility model discloses the size of rivers in the user can be adjusted as required to can prevent the phenomenon of water refluence, and further prevent that intraductal rivers from leaking through setting up the choked flow piece.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a part a of the structure of the present invention.

In the figure: the water-saving valve comprises a valve body 1, a water inlet pipe 2, a connecting column 3, a threaded rod 4, a threaded cavity 5, a water blocking piece 6, a flow blocking plate 7, a water blocking wall 8, a water outlet pipe 9, a sliding groove 10, a spring 11, a flow blocking column 12, a flow blocking piece 13, a concave hole 14, a limiting pipe 15 and a groove 16.

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.

Referring to fig. 1-2, a butterfly valve for preventing water backflow comprises a valve body 1, a water inlet pipe 2 and a water outlet pipe 9, wherein the valve body 1 is respectively and fixedly connected with the water inlet pipe 2 and the water outlet pipe 9 in a vertical manner, the water inlet pipe 2 and the water outlet pipe 9 are positioned at the same horizontal height, and threads are uniformly arranged on the water inlet pipe 2 and the water outlet pipe 9;

a cavity is formed between the water inlet pipe 2 and the water outlet pipe 9, a threaded rod 4 is arranged in the cavity, a handle is arranged at the upper end of the threaded rod 4, a connecting column 3 is arranged below the threaded rod 4, a threaded cavity 5 is formed in the connecting column 3, the threaded rod 4 extends into the threaded cavity 5, the threaded rod 4 is in threaded connection with the threaded cavity 5, a spoiler is fixedly connected to the bottom end of the connecting column 3, the spoiler 7 extends into the valve body 1 through a limiting pipe 15, and a groove 16 is formed in the pipe wall of the valve body 1 corresponding to the;

the spoiler 7 is close to outlet pipe 9 one side and is provided with

breakwater

8, 8 upper ends of breakwater rotate with 1 pipe wall of valve body to be connected, breakwater 8 comprises three fender 6, rotate between fender 6 to be connected, 6 upper ends of fender 6 that are located the below are close to 7 one side of spoiler and offset with 6 bottoms of top fender, and 6 upper ends of fender 6 that are located the below are close to outlet pipe 9 one side and 6 contactless of top fender, 6 upper ends of top fender are close to 7 one side of spoiler and offset with 1 pipe wall of valve body, and 6 upper ends of top fender are close to outlet pipe 9 one side and 1 pipe wall contactless of valve body, the effect of breakwater 8 lies in: when water flows forwards, the water retaining wall 8 is turned over and cannot block the water flow, and when the water flows backwards, the water retaining wall 8 blocks the pipeline and prevents the water from flowing backwards;

spoiler

7 and 15 sliding connection of spacing pipe, be provided with spoiler 13 between 15 of spacing pipe and the spoiler 7, recess 16 is close to and is provided with spoiler 13 equally between 2 one side of inlet tube and the spoiler 7, spoiler 13 is by hindering post 12, spring 11 constitutes, spout 10 has been seted up to 1 pipe wall correspondence of valve body and the 12 positions of hindering post,

hinder post

12 and 10 sliding connection of spout, it is connected with 10 elastic movements of spout through spring 11 to hinder 12 bottoms of post, 7 both sides surfaces of spoiler are equipped with shrinkage pool 14, shrinkage pool 14 diameter equals with 12 diameters of shrinkage pool post, spoiler 13's effect lies in: the gap between the spoiler 7 and the valve body 1 can be blocked, and the water flow in the pipe is prevented from leaking out of the pipe through the gap under certain pressure.

During the use, drive threaded rod 4 through rotating the handle and rotate, threaded rod 4 drives spliced pole 3 and rotates, and spliced pole 3 drives spoiler 7 and reciprocates, adjusts intraductal flow, and when intraductal water forward flow, the breakwater 8 stirs under the promotion of rivers, can not hinder rivers and flow, and when the refluence appears in intraductal water, breakwater 8 blocks up the pipeline, prevents water refluence.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. A butterfly valve for preventing water backflow comprises a valve body (1), a water inlet pipe (2) and a water outlet pipe (9), and is characterized in that the valve body (1) is respectively and fixedly connected with the water inlet pipe (2) and the water outlet pipe (9) vertically, the water inlet pipe (2) and the water outlet pipe (9) are positioned at the same horizontal height, and threads are uniformly arranged on the water inlet pipe (2) and the water outlet pipe (9);

seted up the cavity between inlet tube (2) and outlet pipe (9), be provided with threaded rod (4) in the cavity, threaded rod (4) upper end is equipped with the handle, threaded rod (4) below is equipped with spliced pole (3), threaded cavity (5) have been seted up in spliced pole (3), threaded rod (4) extend to threaded cavity (5) inside, threaded rod (4) pass through threaded connection with threaded cavity (5), spliced pole (3) bottom fixedly connected with spoiler (7), spoiler (7) extend to valve body (1) inside through spacing pipe (15), spoiler (7) and spacing pipe (15) sliding connection, valve body (1) pipe wall corresponds spoiler (7) position and is equipped with recess (16).

2. A butterfly valve for preventing water from flowing backwards as claimed in claim 1, characterized in that a flow resisting element (13) is arranged between the limiting tube (15) and the flow resisting plate (7), and a flow resisting element (13) is also arranged between one side of the groove (16) close to the water inlet pipe (2) and the flow resisting plate (7).

3. The butterfly valve for preventing water backflow according to claim 2, wherein the flow resisting element (13) is composed of a flow resisting column (12) and a spring (11), a sliding groove (10) is formed in the position, corresponding to the flow resisting column (12), of the pipe wall of the valve body (1), the flow resisting column (12) is in sliding connection with the sliding groove (10), and the bottom end of the flow resisting column (12) is elastically connected with the sliding groove (10) through the spring (11).

4. A butterfly valve for preventing water from flowing backwards as claimed in claim 3, characterized in that said flow blocking plate (7) has recesses (14) on both side surfaces, said recesses (14) having a diameter equal to the diameter of said flow blocking post (12).

5. The butterfly valve for preventing water backflow according to claim 1, wherein a water retaining wall (8) is arranged on one side of the flow blocking plate (7) close to the water outlet pipe (9), the upper end of the water retaining wall (8) is rotatably connected with the pipe wall of the valve body (1), the water retaining wall (8) is composed of three water retaining pieces (6), and the water retaining pieces (6) are rotatably connected with each other.

6. The butterfly valve of waterproof refluence of claim 5, characterized in that, be located the below keep off water piece (6) upper end and be close to spoiler (7) one side and offset with top fender water piece (6) bottom, and be located the below keep off water piece (6) upper end and be close to outlet pipe (9) one side and keep off water piece (6) contactless above, the top keep off water piece (6) upper end and be close to spoiler (7) one side and offset with valve body (1) pipe wall, and the top keep off water piece (6) upper end and be close to outlet pipe (9) one side and valve body (1) pipe wall contactless.