KR100433479B1 - A Feed Valve Structure for Boiler - Google Patents

Abstract

The present invention relates to a structure of a water supply valve used in a boiler, wherein a coil is wound around an outside of a plunger supported by a spring, and a diaphragm is installed below the plunger, wherein the water supply valve is provided. A cap 5 of a predetermined shape is mounted on the lower portion of the cap 5, and a filter 7 is mounted inside the cap 5, and closely adheres to the inner surface 5a of the cap 5 via the filters 7. Is provided with a blocking rod (9) is installed to move up and down, it is to be able to physically control the flow of water flowing from the inlet (A) of the water supply valve by moving the blocking rod (9) up and down as necessary.

Description

A Feed Valve Structure for Boiler}

The present invention relates to a water supply valve used in a boiler, and in particular, serves to serve as an automatic water supply valve and a manual water supply valve in one valve, reducing the number of components of the boiler, as well as extending the life of the components and winter freezing accidents. It relates to the structure of the boiler feed valve to prevent the.

As is well known, a general structure of a water supply valve installed between a hot water line and a heating line having a function of supplying and blocking a heating medium such as water to a heating line of a boiler, and as shown in FIG. A coil 112 is wound around the outside of the plunger 110 supported by the 111, and a diaphragm 113 is installed below the plunger 110, and a filter that filters various dirt at the bottom of the water supply valve part. 115 is installed, the cap 114 is formed to surround the filter 115 is combined.

Accordingly, the water supplied through the boiler pipe is introduced into the water supply valve through the inlet (A) of the water supply valve, and then moved to the diaphragm 113 through the filter 115, wherein the water supply valve is opened. An electrical signal is generated to raise or lower the plunger 110 to open or close the diaphragm 113 to control the flow of water flowing out toward the outlet B of the water supply valve.

However, the water supply valve is always exposed to foreign matters, and even if the filter 115 is installed to filter the foreign matters, if foreign matters are caught in the diaphragm 113 or when water is generated, sufficient airtightness is not maintained. Accordingly, even though electricity is not applied to the water supply valve, water is supplied by the water pressure, and water is supplied to the heat exchanger and the heating line, and eventually the overflow of the open expansion tank causes the boiler room and the surrounding facilities to be submerged.

In this case, since the water supply valve itself is not conventionally shut off, the water supply has been shut off by operating a valve installed in the main water meter or the boiler direct water (cold water) supply line. There was a problem that can not use cold / hot water at all.

In addition, the water supply time varies depending on the zone when the water supply is cut off, and thus, the water in the boiler heat exchanger flows out along the water line. Some products have a built-in check valve to prevent the water from draining out. As it was not completely blocked by foreign matters, the low water level was taken and the boiler was not operated, which caused the freezing of the boiler during the cold winter season.

In order to solve this problem, conventionally, as shown in FIG. 4, the manual water supply valve 101 and the automatic water supply valve 102 are separately connected to the water supply line 100 to supply water supplied to the heat exchanger 103. Although it is configured and used to control, in this case, the structure is complicated and the manual water supply valve 101 has to be installed separately, so there is a problem that the overall manufacturing cost of the boiler is increased.

The present invention has been invented to solve the above problems, and serves to serve as an automatic water supply valve and a manual water supply valve through a single water supply valve, simplifying the component configuration of the boiler, reducing the manufacturing cost and extending the life of the parts. The purpose is to provide a structure of a boiler feedwater valve that can be used.

1 is a longitudinal sectional view of a water supply valve according to the present invention;

Figure 2 is a partial longitudinal cross-sectional view of the water supply valve showing the flow of the fluid in the open state the blocking rod according to the present invention,

Figure 3 is a corresponding figure of Figure 1 showing an automatic water supply valve according to the prior art,

Figure 4 is a prior art, the piping diagram of the boiler separately installed manual feed valve and automatic feed valve.

-Explanation of symbols for the main parts of the drawings-

1: plunger 2: spring

3: coil 4: diaphragm

5: cap 5a: inner

6: blocking surface 7: filter

8: lever 9: blocking rod

10: Packing A: Inlet

B: exit

In the present invention for achieving the above object, in the solenoid type water supply valve in which a coil is wound on the outside of the plunger carried by the spring and a diaphragm is installed in the lower portion of the plunger, A cap having a predetermined shape is mounted, and a filter is mounted inside the cap, and a blocking rod is provided to be in close contact with the inner surface of the cap via the filters and to be moved up and down.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of the water supply valve according to the present invention, Figure 2 is a partial longitudinal cross-sectional view of the water supply valve showing the flow of the fluid in the open state the blocking rod according to the present invention.

The present invention provides a solenoid type water supply valve in which a coil is wound on an outside of a plunger supported by a spring, and a diaphragm is installed below the plunger, and a cap 5 having a predetermined shape is mounted below the water supply valve. The filter 7 is mounted inside the cap 5, and the blocking rod 9 is provided to be in close contact with the inner surface 5a of the cap 5 via the filters 7 and to move up and down. Is done.

Here, the lever 8 for vertical movement is formed in the lower portion of the blocking rod 9, while the packing 10 is mounted in the middle and the upper portion, respectively.

Hereinafter, the operation of the water supply valve according to the present invention will be described in detail.

First, in the state in which the blocking rod 9 is opened, it is the same as the operation of a general automatic water supply valve.

That is, the water introduced through the inlet (A) of the water supply valve is moved toward the diaphragm (4) through the filter (7), as shown by the arrow in FIG. When the plunger 1 is raised or lowered, the opening of the diaphragm 4 is determined to control the flow of water. When the water supply valve is signaled in more detail (when power is applied to the coil 3), As the plunger 1 rises by overcoming the elastic force of the spring 2 by the magnetic force, the diaphragm 4 is opened so that water can move toward the outlet B. On the contrary, when the power is cut off, the plunger 1 is lowered. As a result, the diaphragm 4 is closed to block the flow of water toward the outlet B of the water supply valve.

On the other hand, when the blocking rod 9 is pushed upward, power is applied to the coil 3 of the water supply valve so that the plunger 1 is raised as described above and the diaphragm 4 is opened so that the outlet B is opened. Even if the water flowing from the inlet (A) side is physically blocked by the blocking rod (9) to prevent the water from moving toward the outlet (B).

Looking at this process in more detail, the packing 10 mounted on the upper part of the blocking rod (9) is in close contact with the blocking surface (6) formed inclined to the lower portion of the water supply valve is the water flowing through the inlet (A) of the water supply valve This prevents the filter 7 from entering the interior of the filter 7, which in turn physically locks the water supply valve.

Therefore, it is possible to physically control the flow of water flowing from the inlet (A) of the water supply valve by moving the blocking rod (9) up and down using the lever (8) as needed.

As described above, according to the present invention, it is possible to automatically adjust the water supply through a single water supply valve, as well as to manually control the operation of the water supply valve using a blocking rod as needed, to prevent winter boiler accidents, By simplifying the components of the boiler to lower the manufacturing cost, there is an effect that can extend the life of the boiler by preventing the trouble.

Claims (3)

In the solenoid type water supply valve in which a coil is wound on the outside of the plunger carried by the spring and a diaphragm is installed at the lower portion of the plunger, A cap 5 of a predetermined shape is mounted on the lower part of the water supply valve, and a filter 7 is mounted inside the cap 5, and the inner surface 5a of the cap 5 is passed between the filters 7. ), The structure of the boiler feedwater valve, characterized in that the blocking rod (9) provided to be in close contact with the up and down movement. The structure of a boiler feed valve according to claim 1, wherein a lever (8) for vertical movement is formed at a lower portion of the blocking rod (9), and packings (10) are mounted at middle and upper portions, respectively. The structure of the boiler feedwater valve according to claim 1, wherein the shutoff rod (9) is moved up and down to physically control the flow of water introduced from the inlet (A) of the feedwater valve.