CN111336263A

CN111336263A - Butterfly valve with handle locking mechanism

Info

Publication number: CN111336263A
Application number: CN201811557089.6A
Authority: CN
Inventors: 章文忠
Original assignee: Hubei Taihe Petrochemical Equipment Co ltd
Current assignee: Hubei Taihe Petrochemical Equipment Co ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-06-26

Abstract

The invention provides a butterfly valve with a handle locking mechanism, which comprises a valve body, a valve shaft and a butterfly plate, wherein a wear-resistant layer is arranged in the valve body, a valve body hole for the valve shaft to pass through is formed in the valve body, the part, located in a valve body channel, of the valve shaft is connected with the butterfly plate, a control handle is arranged at the upper end of the valve shaft, a limiting handle is arranged at the lower side of the control handle, one end of the limiting handle is rotatably connected with the control handle through a pin, a spring is arranged between the limiting handle and the control handle, a supporting plate is arranged at the upper end of the valve body, and a. The butterfly valve can limit and lock the handle, and prevents the valve shaft from rotating to influence the opening and closing state of the valve.

Description

Butterfly valve with handle locking mechanism

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a butterfly valve with a handle locking mechanism.

Background

A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, can be used for the on-off control of low-pressure pipeline media, and is a valve which is opened and closed by rotating around a valve shaft and taking a closing member (a valve clack or a butterfly plate) as a disc.

The 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 is not provided with a locking device, and the valve shaft is rotated due to misoperation or touching of a handle in the use process, so that the opening and closing state of the valve is changed.

Disclosure of Invention

The invention aims to solve the technical problem of providing a butterfly valve with a handle locking mechanism, which can limit and lock a handle and prevent a valve shaft from rotating to influence the opening and closing state of the valve.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a take handle locking mechanical system's butterfly valve, includes valve body, valve shaft and butterfly plate, is equipped with the wearing layer in the valve body, is equipped with the valve body hole that supplies the valve shaft to pass on the valve body, and the butterfly plate is connected to the part that the valve shaft is located the valve body passageway, the valve shaft upper end is equipped with brake valve lever, and spacing handle setting is at brake valve lever's downside, and spacing handle's one end is connected through the pin rotation with brake valve lever, is equipped with the spring between spacing handle and the brake valve lever, and the valve body upper end is equipped with the backup pad, and the backup pad.

In the preferred scheme, the shape of backup pad is fan-shaped, and spacing bayonet socket's quantity is a plurality of, distributes along the arc circumference in the backup pad outside.

In the preferred scheme, the cross section of the connecting position of the valve shaft and the control handle is a polygon, one end of the control handle is provided with a polygonal mounting hole matched with the valve shaft, and the upper end of the valve shaft is provided with a limit nut.

In a preferable scheme, two sides of the part, located in the valve body channel, of the valve shaft are connected with semicircular filter plates, and the filter plates are perpendicular to the butterfly plates.

In a preferred scheme, a sealing ring is arranged on the circumferential side of the butterfly plate.

In a preferred scheme, the butterfly plate is provided with a reinforcing rib.

According to the butterfly valve with the handle locking mechanism, under the action of the spring, the limiting handle is matched with the limiting buckle, the limiting buckle limits rotation of the limiting handle, and therefore misoperation of the valve is prevented when the valve is not operated.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

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

FIG. 2 is a schematic view of the mounting structure of the control handle;

in the figure: the valve comprises a valve body 1, a valve shaft 2, a butterfly plate 3, a wear-resistant layer 4, a control handle 5, a limiting handle 6, a spring 7, a supporting plate 8, a limiting bayonet 9, a mounting hole 10, a limiting nut 11, a filter plate 12, a sealing ring 13 and a reinforcing rib 14.

Detailed Description

As shown in fig. 1-2, a take handle locking mechanical system's butterfly valve, including valve body 1, valve shaft 2 and butterfly plate 3, be equipped with wearing layer 4 in the valve body 1, the wearing layer 4 material is nitrile rubber or fluororubber, is equipped with the valve body hole that supplies valve shaft 2 to pass on the valve body 1, and butterfly plate 3 is connected to the part that valve shaft 2 is located the 1 passageway of valve body, 2 upper ends of valve shaft are equipped with brake valve lever 5, and limit handle 6 sets up the downside at

brake valve lever

5, and 6 one end of limit handle are connected through the pin rotation with brake valve lever 5, are equipped with spring 7 between limit handle 6 and the

brake valve lever

5, and 1 upper end of valve body is equipped with backup pad 8, and the backup pad 8 outside is equipped with carries out spacing.

The quantity of spacing buckle 9 is two at least, and the angle of two spacing buckles 9 is 90 degrees, and it is spacing to carry out the block to spacing handle 6 when the valve is closed and is opened respectively, guarantees that the valve keeps opening or closed state, prevents to change the open-close state because the mistake bumps control handle 5 and makes valve shaft 2 take place to rotate.

During specific use, when the valve state needs to be changed, an operator holds the control handle 5 and the limiting handle 6 at the same time, the spring 7 is compressed, the limiting handle 6 is enabled to rotate upwards, the limiting handle 6 is enabled to be separated from the limiting position of the limiting buckle 9, the control handle 5 is rotated, the valve shaft 2 is driven to rotate simultaneously, the opening state of the valve is changed, the limiting handle 6 is loosened, the limiting handle 6 rotates downwards under the action of the spring 7, the limiting handle 6 is clamped in the limiting buckle 9 again, and the valve is locked.

In this embodiment, the contact surface between the limit buckle 9 and the limit handle 6 is an inclined surface parallel to the limit handle 6.

Preferably, the supporting plate 8 is fan-shaped, and the number of the limiting bayonets 9 is multiple and is distributed along the arc circumference of the outer side of the supporting plate 8. Through spacing 6 spacing in the spacing buckle 9 of different positions with spacing handle, realize the regulation of flow, when guaranteeing the valve use moreover, can not take place the condition that the mistake bumped.

The cross section of the connecting position of the valve shaft 2 and the control handle 5 is polygonal, one end of the control handle 5 is provided with a polygonal mounting hole 10 matched with the valve shaft 2, and the upper end of the valve shaft 2 is provided with a limit nut 11. The control handle 5 is detachably connected with the valve shaft 2, so that filling of valve filler and replacement of the control handle 5 are facilitated.

Preferably, the valve shaft 2 is connected with a semicircular filter plate 12 on two sides of the part positioned in the channel of the valve body 1, and the filter plate 12 is arranged perpendicular to the butterfly plate 3.

When the butterfly plate 3 is arranged parallel to the water flow direction, the valve is in an open state, in which the filter plate 12 is perpendicular to the water flow direction, so that the flow medium can be filtered.

The butterfly plate 3 is provided with a sealing ring 13 at the circumferential side. The sealing performance of the butterfly plate 3 and the valve body 1 is improved.

And reinforcing ribs 14 are arranged on the butterfly plate 3. Because the butterfly valve is generally applied to the on-off control of large-diameter pipelines, the butterfly plate is easy to damage in frequent opening and closing and fluid scouring processes, and the strength of the butterfly plate 3 is improved by arranging the reinforcing ribs 14.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. The utility model provides a take handle locking mechanical system's butterfly valve, includes valve body (1), valve shaft (2) and butterfly plate (3), is equipped with wearing layer (4) in valve body (1), is equipped with the valve body hole that supplies valve shaft (2) to pass on valve body (1), and butterfly plate (3), its characterized in that are connected to the part that valve shaft (2) are located valve body (1) passageway: valve shaft (2) upper end is equipped with brake valve lever (5), and limit handle (6) set up the downside at brake valve lever (5), and the one end and brake valve lever (5) of limit handle (6) are connected through the pin rotation, are equipped with spring (7) between limit handle (6) and brake valve lever (5), and valve body (1) upper end is equipped with backup pad (8), and backup pad (8) outside is equipped with carries out spacing bayonet socket (9) to limit handle (6).

2. The butterfly valve with handle locking mechanism according to claim 1, wherein: the shape of backup pad (8) is fan-shaped, and the quantity of spacing bayonet socket (9) is a plurality of, distributes along the arc circumference in backup pad (8) outside.

3. The butterfly valve with handle locking mechanism according to claim 1, wherein: the cross section of the connecting position of the valve shaft (2) and the control handle (5) is polygonal, one end of the control handle (5) is provided with a polygonal mounting hole (10) matched with the valve shaft (2), and the upper end of the valve shaft (2) is provided with a limiting nut (11).

4. The butterfly valve with handle locking mechanism according to claim 1, wherein: the valve shaft (2) is positioned in the channel of the valve body (1), two sides of the part are connected with semicircular filter plates (12), and the filter plates (12) are arranged perpendicular to the butterfly plate (3).

5. The butterfly valve with handle locking mechanism according to claim 1, wherein: and a sealing ring (13) is arranged on the circumferential side of the butterfly plate (3).

6. The butterfly valve with handle locking mechanism according to claim 1, wherein: and reinforcing ribs (14) are arranged on the butterfly plate (3).