JP2946018B2 - Air valve with cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air valve for sucking and exhausting a water pipe, in which foreign matter adheres near a valve seat and a ventilation passage, and the valve body adheres to the dried foreign matter over time. The present invention relates to an air valve with a cleaning device that reliably prevents malfunction.

[0002]

2. Description of the Related Art An air valve connected to a water pipe for suction and exhaust of a water pipe is mounted on a valve box connected to a connection port 1A of the water pipe 1 as shown in FIG. 2 and
The valve body 2 includes a float 3 housed inside the valve box 2 and a valve body 5 covered with the float 3 and moved up and down with the float 3 to guide the guide member 4. 5 has an upwardly facing sheet portion 5A formed on the outer periphery thereof. A lid 7 having an intake / exhaust hole 6 is attached to an upper portion of the valve box 2.
A valve seat 8 attached downward to the outer peripheral portion of the intake / exhaust hole 6 faces the seat portion 5A of the valve body 5. Therefore, in an initial state in which the piping of the water pipe 1 is completed, the float 3 and the valve body 5 are held at the illustrated valve-open positions. Therefore, when the water pipe 1 is filled with water, the air in the water pipe 1 is released from the valve box 2.
Notch (not shown) of the guide member 4 and the suction / exhaust hole 6
, A space defined by a space between the lid 7 and a cover 9 attached to the upper portion of the lid 7, that is, an intake / exhaust hole 6, and an air passage formed by the space between the lid 7 and the cover 9. The air is rapidly exhausted to the outside through 10. On the other hand, when water flows into the valve box 2 due to the filling of the water pipe 1, the float 3
Buoyancy is generated in the float 3 and the valve body 5
Is floated on the guide so that the sheet portion 5A of the valve body 5 comes into close contact with the valve seat 8 to close the suction / exhaust hole 6 and stop water.

However, when the fluid passing through the water pipe 1 is seawater, the intake / exhaust holes 6 in the valve seat 8 and the ventilation passage 10 are not provided.
There is a possibility that foreign matter such as salt adheres and dries in the vicinity of, and the valve body 5 adheres to the valve seat 8 due to the foreign matter such as salt which has adhered and dried, and malfunction may occur. Therefore, at the time of regular maintenance, it is necessary to perform an operation of removing the foreign substances by bothering the operator manually.

[0004]

The problem to be solved is that foreign matter such as salt adheres and dries in the vicinity of the valve seat and the ventilation path, and when a malfunction occurs, the trouble is caused by the manual work of the operator. This is the point where removal work is necessary.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a valve box mounted in communication with a water pipe, a float housed in the valve box, and a valve coupled to an upper portion of the float. An air valve having a body, a valve seat that is opened and closed by the valve body that moves up and down together with the float in the valve box, and an air passage that communicates the valve seat with the outside of the valve box. It is equipped with a cleaning device that sprays cleaning water toward the vicinity of the ventilation path, preventing foreign matter such as salt from adhering and drying near the valve seat and the ventilation path and preventing malfunction. Thus, the object of eliminating the need for the worker to manually remove the foreign matter has been achieved.

[0006]

According to the present invention, the cleaning device is operated periodically to inject the cleaning water toward the vicinity of the valve seat and the ventilation passage, whereby the salt adhering to the vicinity of the valve seat and the ventilation passage is obtained. And other foreign matter can be removed before drying.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. The same or corresponding parts as those in the conventional example of FIG. 2 are denoted by the same reference numerals and described. In FIG. 1, a pneumatic valve includes a valve box 2 mounted in communication with a connection port 1A of a water pipe 1, a float 3 housed inside the valve box 2, and a cover on the float 3. And the guide member 4 together with the float 3
The valve body 5 is moved up and down with the guide as a guide, and an upwardly facing sheet portion 5A is formed on the outer peripheral portion of the valve body 5. A lid 7 having an intake / exhaust hole 6 is attached to an upper portion of the valve box 2, and a valve seat 8 attached downward to an outer peripheral portion of the intake / exhaust hole 6 is provided with a sheet portion 5 </ b> A of the valve body 5. Facing. Therefore, in an initial state in which the piping of the water pipe 1 is completed, the float 3 and the valve body 5 are held at the illustrated valve-open positions. Therefore, when the water pipe 1 is filled with water, the air in the water pipe 1
The space from the valve box 2 to a cover 7 and a cover 9 attached to the upper portion of the cover 7, that is, a suction / exhaust hole, passes through a notch (not shown) of the guide member 4 and a suction / exhaust hole 6 of the guide member 4. 6, an air passage 10 formed by the space between the lid 7 and the cover 9
Is rapidly exhausted to the outside. On the other hand, as the water flows into the valve box 2 due to the filling of the water pipe 1, buoyancy is generated in the float 3, and the float 3 and the valve element 5 guide the guide member 4 to guide. The seat portion 5A of the valve body 5 comes into close contact with the valve seat 8 so as to close the suction / exhaust hole 6 to stop water.

On the other hand, a cleaning device 11 is mounted through the center of the cover 9. The cleaning device 11 is for injecting cleaning water (clear water such as tap water) toward the vicinity of the intake / exhaust holes 6 in the valve seat 8 and the ventilation path 10.
The apparatus includes a high-pressure water source 11A, a cleaning water supply pipe 11B connected to the high-pressure water source 11A, and a control valve 11C such as a solenoid valve or a ball valve provided in the cleaning water supply pipe 11B. And the tip nozzle part of the washing water supply pipe 11B is
The cover 9 is mounted downward through the center of the cover 9 and has directivity so that washing water can be sprayed toward the vicinity of the intake / exhaust hole 6 in the valve seat 8 and the ventilation passage 10. The control valve 11C is configured to automatically open and close in a predetermined cycle according to the time setting of a timer (not shown).

With this configuration, when the control valve 11C of the cleaning device 11 is opened based on the time set by the timer, the cleaning water flows from the high-pressure water source 11A through the cleaning water supply pipe 11B and the valve seat 8 and the ventilation hole. The fuel is injected near the road 10. As a result, foreign matters such as salt adhering near the intake / exhaust holes 6 in the valve seat 8 and the ventilation passage 10 can be reliably removed before drying. Therefore, it is possible to reliably prevent foreign matter such as salt from adhering and drying in the vicinity of the valve seat 8 and the intake / exhaust holes 6 and to cause malfunction, and to remove foreign matter by a manual operation of a worker conventionally performed. Work can be made unnecessary.

In the above embodiment, the control valve 11C is described as being constituted by a solenoid valve or a ball valve which automatically opens and closes based on the time setting of a timer. However, the present invention is limited only to the above embodiment. Instead, the control valve 11C may be constituted by a manual on-off valve.

[0011]

As described above, according to the present invention, the cleaning device is periodically operated to inject the cleaning water toward the vicinity of the valve seat and the ventilation passage, so that the vicinity of the valve seat and the ventilation passage is provided. Foreign matter such as salt adhering to the valve can be removed before drying, so that foreign matter such as salt adheres and dries in the vicinity of the valve seat and the ventilation path and reliably prevents malfunction, This eliminates the need for a worker to manually remove foreign matter, which has been conventionally performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a conventional example.

[Description of Signs] 1 water pipe 2 valve box 3 float 5 valve body 8 valve seat 10 ventilation path 11 cleaning device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F16K 51/00-51/02 F16K 31/12-31/42 F16K 55/07

Claims (1)

(57) [Claims] 1. A valve box which is attached in communication with a water pipe,
A float housed in the valve box, a valve body coupled to an upper portion of the float, a valve seat opened and closed by the valve body that moves up and down with the float in the valve box; An air valve having an air passage for communicating a valve seat with the outside of a valve box, wherein a cleaning device for jetting washing water toward the vicinity of the valve seat and the air passage is provided. With air valve.