KR200225879Y1 - External disc seat ring adjustable butterfly valve - Google Patents

Abstract

The present invention is a butterfly valve seat ring watertight device which improves the watertightness of the valve by expanding the inside of the disc seat ring using pneumatic or water pressure using air, other liquids It is about.

According to the present invention, the disc seat ring gland ring 3 for fixing the disc seat ring 2 of a special shape, which is an elastic body embedded in the outer peripheral surface of the valve disc 1, is fixed with a plurality of fixing bolts 4, It is transmitted to the inside 2 'of the disc seat ring 2 through a passage 6 for transmitting air or water pressure supplied from the outside of the valve body to the valve shaft 5, so that the disc seat ring 2, which is an elastic body, expands. There is provided an external disc seat ring adjustable butterfly valve having a watertight device, characterized in that the index is made by pressing with the valve body seat ring 7.

Description

External Disc Seat Ring Adjustable Butterfly Valve {.}

The present invention relates to an external disk seat ring-type butterfly valve that blocks a fluid in a certain section of a pipeline through which various fluids such as water flow, and in particular, by supplying external air pressure or water pressure to an air or hydraulic inlet installed at a valve shaft end. It is transmitted to the inside of the disc seat ring of the elastic body fixed to the valve disc through a passage formed in the valve rotation shaft, the external shape that expands the special shape of the disc seat ring of the elastic body to expel the fluid acting on the pipe by the valve body seat ring and compression Disc seat ring adjustable butterfly valve.

The butterfly valve has been proposed and used in the past, but in general, the valve body seat ring is fixed to the inner circumferential surface of the cylindrical valve body, and the elastic disk seat ring is fixed to the outer circumferential surface of the disc disk, which is installed on the valve body with the rotating shaft. It has a structure fixed by a plurality of seat ring fixing bolts, and the disk seat ring is pressed against the valve body seat ring by rotating the disk to close the water pipe.

However, the conventional butterfly valve is designed to block the working pressure of the fluid flow by the contact compression force in the direction of the fluid flow of the body seat ring with the inclined surface and the disc seat ring with the elastic body when the valve is closed. By tightening the disc seat ring fixing bolts, the disc seat ring of the elastic body is permanently deformed and the life is shortened due to the loss of elastic force, which makes it difficult to index. If it is necessary to readjust the elastic disc seat ring for a long time, or if the valve is installed in the water supply line and the leak occurs, the valve body seat ring and the disc seat ring need to be adjusted. A person enters the pipeline and tightens the seat adjustment bolt. Not only were maintenance not easy, such as saving, but there were significant economic losses.

An object of the present invention, the disc seat ring, which is a special shape of the elastic body embedded in the outer circumferential surface of the valve disc is transferred to the disc seat ring of the elastic body by using air pressure or water pressure supplied from the outside through a passage formed in the valve shaft, A butterfly valve with a watertight device, characterized in that the disc seat ring expands and the index is formed by the valve body seat ring and compression, reducing the manufacturing cost, increasing the efficiency, convenient maintenance, compact, long time dimension There is no problem at all economical.

1 is a cross-sectional view showing the configuration and operation of the existing valve

Figure 2 is a cross-sectional view showing the configuration and operation of the present invention

3 is a cross-sectional view of the main components of the present invention

Figure 4 is an enlarged view of Figure 2 showing the configuration and operation of the subject innovation device

A) is a cross-sectional view when the main disk seat ring is reduced.

B) early stage cross section

<Explanation of symbols for main parts of drawing>

1.valve disc

2. Disc seat ring 2 'inside

3. Disc sheet gland ring

4. Fixing bolt

5. Valve Shaft

6. Pathway

7. Valve body seat ring

According to the present invention, the special shape of the elastic body embedded in the outer peripheral surface of the valve disc (1) ) Secures the disc seat ring gland ring (3) for fixing the disc seat ring (2) with a plurality of fixing bolts (4), and transfers the air pressure or water pressure supplied from the valve body to the valve shaft (5). It is transmitted to the inside 2 'of the disc seat ring 2 through the passage 6, and the disc seat ring 2, which is an elastic body, expands and is compressed evenly with the valve body seat ring 7 so that the index is reduced. An external disc seat ring adjustable butterfly valve having a watertight device is provided.

Hereinafter, described with reference to the accompanying drawings, preferred embodiments of the present invention is as follows.

In order to shut off the flow of the fluid, the valve disc 1 is closed and the rotary shaft 5 is rotated to close the valve disc 1. The disc seat ring 3 is pressed against the valve body seat ring 7 to be completely closed. If so, shut off the flow of fluid correctly.

At this time, a special shape is provided through a passage 6 for transmitting air pressure or water pressure supplied from the outside of the valve body formed on the valve shaft 5 so that the pressing force of the disc seat ring 3 and the valve body seat ring 7 is equally applied. It is transmitted to the inside 2 'of the disc seat ring 2, and the disc seat ring 3, which is an elastic body, expands and compresses evenly with the valve body seat ring 7. When opening the closed valve, there is no problem.When the air pressure or water pressure is removed, the disc seat ring (3), which is an elastic body, contracts and hardly interferes with the valve body seat ring (7). It requires less power when opening and closing.

As described above, according to the present invention, the external air pressure or hydraulic pressure so as to equally act the pressing force with the special shape of the disc seat ring 2 and the valve body seat ring 7 which are elastic bodies embedded in the outer peripheral surface of the valve disc 1. Is supplied to the inside of the disc seat ring (2 ') through the passage (6) of the valve shaft (5), the expansion effect of the disc seat ring (2), which is an elastic body, complete index for the flow of the fluid, semi-permanent It can be used to reduce manufacturing cost, increase utility, compact, take less power when opening and closing valves, and it is economical because it is easy to maintain and has no problems with long orders.

Claims (1)

A disk seat ring gland ring (3) for fixing a specially shaped disk seat ring (2), which is an elastic body embedded in the outer peripheral surface of the valve disk (1), is fixed with a plurality of fixing bolts (4), and the valve shaft (5) External air pressure or water pressure is transmitted to the inside 2 'of the disc seat ring 2 through the passage 6 formed therein so that the disc seat ring 2, which is an elastic body, is equally aligned with the valve body seat ring 7 An external disc seat ring adjustable butterfly valve having a watertight device, which is compressed to form an index.