KR19990030447A - Air valve for water pipe - Google Patents

Abstract

The present invention relates to an air valve for a water pipe, comprising a chamber having a large diameter seat for rapid exhaust and a chamber having a limited exhaust means, each chamber having a float ball provided with a large diameter seat. A float ball actuating means (21) provided in the chamber (22) in which the float ball (24) is coupled to the end, and a holder (27) fixed to the body of the air valve to hold the float ball actuating means; The large diameter seat opening float ball operating means is coupled through the float ball 24 as a pipe 26, the end is open so that water can be discharged together with the air in the chamber 22, the pipe (26) is provided with an on-off valve (28) to selectively open and close to drain and exhaust through its own pipeline, the pipe (26) is provided with a nipple at its outer end The air drain hose 30 may be connected, and the pipe 26 is provided with a pressure gauge 29 so that the pressure inside the chamber 22 of the large diameter sheet 21 can be checked from the outside.

Description

Air valve for water pipe

The present invention relates to an air valve for a water pipe, and more particularly, is installed on the water pipe to discharge the air quickly in the pipe when filling the water in the pipe or to allow the air to be sucked into the pipe when releasing the water in the pipe To an air valve for quickly and efficiently carrying out water supply or drainage

In general, water valves are provided with air valves for discharging air in the pipes or for taking air into the pipes.

In particular, such air valves should be ensured to operate smoothly even if they are installed with a slope within 2 degrees of vertical.

The air dissolved in the protrusions and water in the pipe should be exhausted from the pipe smoothly. If the air is not discharged to the outside, the reduction of the communication surface and the risk of damage to the pipe are increased. If not, the water in the pipe is not completely discharged, and the inside of the pipe is close to vacuum, which causes a problem that the pipe may be deformed by external pressure.

In this case, air inlet and outlet air valves are to be provided in the water pipeline.

As an air valve installed for the inflow and discharge of air in a pipeline, a twin-stage air valve, a single-stage air valve, and a rapid air valve are used, but mainly a twin-screw air valve is used, so the object of the present invention is directed to a twin-screw air valve. It is about.

As shown in FIG. 1, the conventional bi-spherical air valve has a seat 1 that is hermetically mounted to a hole formed in a conduit, and is opened from the outside to open and close a passage 2 formed at the center of the seat. An operable manual valve 3 is provided, and chambers 4 and 5 are formed on both sides to communicate with the passage 2 when the manual valve 3 is raised and lowered.

Each of the chambers 4 and 5 is provided with a cylindrical guide member 6 having a diameter smaller than the inner diameter of the chamber so that a gap is formed between the inner walls of the chamber, and is moved up and down in the cylindrical guide member 6. The float ball 7 is possibly provided.

A conical packing member 8 is provided on the upper side of the chamber 4, while a large diameter sheet 9 is formed on the upper side of the chamber 5.

In the state in which the chambers 4 and 5 are not filled with water, the float balls 7 are positioned at the bottom of the chamber, so that the air in the conduit is smoothly flowed through the large diameter sheet 9 as indicated by the arrow. Exhausted.

However, when water is filled in the chambers 4 and 5, the float ball 7 moves upward in the guide member 6 to the position indicated by the upper circle in the drawing by the buoyancy force. The sheet 9 having a diameter is sealed, and the chamber 4 is configured such that small bubbles of air are exhausted through the conical packing member 8.

In the conventional twin-spherical air valve of this structure, for example, the air in the conduit remains bubbled even after the water is filled in the chambers 4 and 5 on both sides in the process of passing water after completion of the repair work for some sections. The exhaust gas should be evacuated quickly so as not to damage the pipeline and reduce the fluidity of the pipeline due to water hammer.

However, there is a case where the float ball 7 rises to the top due to the rapid discharge of air to block the discharge port, and at this time, since the rapid exhaust cannot be made, it is inevitable to manually separate the float ball 7 from the large-diameter sheet 9 by the large diameter. The seat 9 should be opened and quickly vented.

To this end, the operator must push the float ball 7 downward using the rod 10 as shown only partially in FIG. 2 with the float ball guide member omitted, wherein air in the bubble state In addition to being discharged through the large-diameter sheet (9) and the water is ejected by the pressure of the water, the operator will be flooded with water, and the leaked water is collected in the air valve room, and additional work is required to be drained through a separate pumping work. The air valve is easily corroded by the water leaked to the outside, obstructed by the cover 11 has a problem that the operator is inconvenient to push the float ball (7) into the rod or rod to take a lot of work time.

The present invention is to solve the problems of the prior art described above, can be applied without changing the basic structure of the existing double-spherical air valve significantly, it is possible to open a large diameter seat quickly and easily for rapid exhaust An object of the present invention is to provide an air valve for a water pipe having a float ball operating means.

Another object of the present invention is to provide an air valve for a water pipe, in which a float ball actuating means for opening a large diameter seat and an auxiliary exhaust means are integrated.

It is still another object of the present invention to provide an air valve for a water pipe, which can be automatically discharged from the chamber in which a large diameter sheet is formed or simply as necessary, and water is guided to a drain without being ejected to the outside.

1 is a schematic cross-sectional view of a bi-spherical air valve for a conventional water pipe.

2 is a cross-sectional view schematically showing the rapid exhaust operation of the air valve of FIG.

3 is a schematic cross-sectional view of an air valve provided with a rapid exhaust means in accordance with the present invention in a basic bi-spherical air valve structure;

FIG. 4 is a schematic partial cross-sectional view of another embodiment of FIG. 3 with a drain hose mounted on a pipe; FIG.

Figure 5 is a schematic cross-sectional view showing the float ball holding means when using a stainless steel pipe.

6 is a plan view of the pipe holder;

7 is a plan view of a support plate disposed between the pipe holder and the air valve body.

Explanation of symbols on the main parts of the drawings

20: air valve 21: large diameter seat

22 chamber 24 float ball

26 pipe 27 holder

28: valve 30: hose

In order to achieve the above object, the air valve for a water pipe of the present invention has a chamber having a large diameter seat for rapid exhaust and a chamber having a limited exhaust means, and each chamber has a double ball type air valve provided with a float ball. And a float ball actuating means provided in the chamber on which the large diameter sheet is formed and the float ball is coupled to the end, and a holder fixed to the body of the air valve to hold the float ball actuating means.

The large diameter seat opening float ball actuating means may be coupled through the float ball as a pipe, and may be configured such that the end is open so that water can be discharged with the exhaust. The float ball actuating means may also be provided with a valve to selectively open and close drainable and ventable through its own conduit.

The float ball operating means may be formed of a synthetic resin or metal pipe, and an nipple may be provided at an outer end thereof to connect a drain hose, and the pipe may externally check an internal pressure of a chamber of a large diameter sheet. A pressure gauge can be provided to make this possible.

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

As shown schematically in FIG. 3, a guide provided in a chamber 22 in which a large diameter seat 21 is formed for rapid evacuation in a twin-shape air valve 20 having basically the same structure as in the prior art according to the present invention. Actuating means 25 are provided to actuate the float ball 24 disposed in the member 23.

The operating means 25 is a holder for mounting the float ball 24 at the bottom and extending to the outside of the pipe 26 and the body of the air valve 20 to hold the pipe 26 to be movable up and down It is comprised including 27.

Opening and closing valves 28 may be provided at the outer ends of the pipes 26 to open and close the inner passages of the pipes, and nipples may be provided at the outer ends of the pipes 26 to externally pressure the chamber 22. A pressure gauge 29 may be provided to confirm.

FIG. 4 shows only a portion of the chamber 22 side of the air valve 20 in a simplified state in which the float ball guide member is omitted, and the hose 30 instead of the pressure gauge on the upper nipple of the pipe 26 of FIG. 3. Is provided, and the pressure in the chamber 22 is high, so that when the water is ejected during exhaust, it is guided to the outside of the drain or air valve chamber so as not to leak to the outside to prevent corrosion of the air valve and separate pumping of the air valve chamber. Eliminate the need for work

In FIG. 5, in the case where the pipe 26 is made of stainless steel, the socket 31 is mounted on the upper side where the float ball 24 is fitted, and the float ball (for example, a brass nut 32 at the bottom) is used. 24) to be firmly fixed to the pipe.

The pipes of Figs. 3 and 4 are made of plastic, and at this time, they are fixed with an adhesive or the like.

6 and 7 the holder 26 is attached to the body of the air valve 20 in order to hold the pipe 26 to which the float ball 24 is coupled to move upward from the bottom of the chamber as the chamber 22 is filled with water. 27 and a support plate 33 fitted below it is schematically shown in plan view.

The holder 27 has a shape in which a central portion thereof is bent upwards, and both ends thereof are fixed to the body of the air valve by bolts, and the support plate 33 is a flat strip to facilitate fixing by the holder 27 fixing bolts. Grooves 34 are formed at both ends thereof.

In the center of the support plate 33 and the holder 27, holes 35 and 36 for pipe penetration are formed.

As described above, the effect of the arrangement of the float ball 24 operating means arranged in the chamber 22 having a large diameter seat is formed according to the present invention in the twin-spherical air valve will be described.

As water is filled in the chamber 22 of the bi-spherical air valve 20 from the conduit, the float ball 24 located at the bottom of the chamber in FIG. 3 is roughly circled upward with the pipe 26 by buoyancy. As a result, the seat 21 of the large diameter is sealed to prevent the air from being discharged, and the air introduced from the conduit is trapped under the float ball 24.

If the operator checks the pressure from the pressure gauge 29 and the pressure is significantly higher than the normal pipeline pressure, the operator judges the abnormal state due to the impediment of the flow of water by air bubbles rather than the water in the pipeline, and prevents damage to the pipeline. In order to first open the valves (28,31) provided in the pipe 26 to allow the air to be discharged to the outside through the pipe together with the water, at this time can discharge the water through the hose 30 as shown in Figure 4 Or, the pipe 26 is pushed downward to move the float ball 24 of the chamber 22 downward so as to be separated from the large diameter sheet 21 so that the air in the conduit can be quickly discharged.

The material and the diameter of the pipe are selected in consideration of the size of the pipe and the water pressure condition. If the water pressure is 3 kg / cm 2 or more, the pipe may be made of 10 ° stainless steel.

According to the present invention, it is possible to easily and quickly discharge the air in the pipeline from the chamber to the outside or whenever necessary at a low cost without significantly changing the structure of the conventional double-spherical air valve when forced exhaust as in the conventional Solve the problem and can easily discharge the air and water, there is an advantage that the water is not ejected to the outside during the exhaust.

Claims (6)

In the twin-spherical air valve provided with a chamber having a large diameter seat for rapid exhaust and a limited exhaust means, and each chamber is provided with a float ball, provided in the chamber 22 having a large diameter seat 21. Float ball actuating means, the float ball 24 is coupled to the end, and a holder (27) fixed to the body of the air valve to hold the float ball actuating means. The float ball actuating means for opening the large diameter sheet is coupled through the float ball 24 as a pipe 26, and an end thereof is opened so that water can be discharged together with the air in the chamber 22. Air valve for water pipes, characterized in that. 3. An air valve according to claim 2, characterized in that the pipe (26) is provided with an opening / closing valve (27) to selectively open and close the drain and exhaust through its own pipeline. 4. The air valve of claim 3, wherein the pipe (26) has a nipple formed at an outer end thereof to which a drain hose (30) can be connected. The air valve according to claim 3 or 4, wherein the pipe (26) is provided with a pressure gauge (29) so as to externally check the pressure inside the chamber (22) of the large diameter sheet (21). According to claim 1, wherein the holder 27 has a central portion bent upwards, both ends thereof are fixed to the body of the air valve by a bolt, the support plate 33 between the holder 27 and the body of the air valve Is provided, the support plate has a flat strip form grooves 34 are formed at both ends in order to facilitate the fixing by the fixing bolt, the pipe in the center of the support plate 33 and the holder 27 A through-hole 35, 36 is formed to hold the pipe 26 to move up and down, the air valve for a water pipe.