JPH06235473A - Solenoid valve for air purging - Google Patents

Abstract

PURPOSE:To purge air and gas automatically and in simple structure by installing a valve plate on a shaft bar, one end side of which is connected to a plunger of a solenoid, and by opening and closing an air passage port by this valve plate. CONSTITUTION:On a central part of a bottom plate 3 of a valve body 2, an air passage port 4 of required diamter is drilled. Subsequently, by connecting its one end side to a plunger 8 of a solenoid 7 through a pin 11 and providing a shaft bar 9 the other end side of which is inserted into the air passage port 4, a valve plate 10 is provided on the other end side of the shaft bar 9. The valve plate 10 is energized to constantly close by a coil spring 12 as an O ring 11 is installed on a surface making contact with the bottom plate 3. Consequently, when the solenoid 7 is electrified, the shaft bar 9 moves as the plunger 8 advances and retreats, and the valve plate 10 provided on the one end side of the shaft bar 9 opens and closes the air passage port 4. At the time when the valve plate 10 opens the air passage port 4, air and the like discharged from an air purging port of a pipe and the like is discharged through the air passage port 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bleeding solenoid valve.

[0002]

2. Description of the Related Art Conventionally, there has been no suitable device for automatically extracting air or gas in a sealed tube or container with a simple structure.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a solenoid valve capable of automatically releasing air or gas with a simple structure. It is something to do.

[0004]

The gist of the present invention is to provide an air passage having a required diameter at the center of the bottom plate of the valve body, while connecting one end to the plunger of the solenoid. A valve plate is attached to the shaft rod, and the air passage is opened and closed by the valve plate.

[0005]

Next, the operation of the present invention will be described. When the solenoid is energized, the shaft rod moves through the advance / retreat of the plunger, and the valve plate attached to one end side of the shaft rod opens and closes the air passage port of the bottom plate of the valve body. And
When the valve plate opens the air passage, air or the like discharged from the air vent such as a pipe is discharged through the air passage.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a partially cutaway front view of a first embodiment of the present invention, and FIG. 2 is a side view of the same.

In the figure, 1 is a solenoid valve body, 2 is a valve body, and 3 is a bottom plate of the valve body. Further, the bottom plate 3 of the valve body is provided with an air passage 4 having a required diameter at the center thereof, and an insertion hole 6 of a screw 5 for connecting to a pipe or the like is formed at the outer end thereof.

Reference numeral 7 is a solenoid, and 8 is a plunger of the solenoid 7. Reference numeral 9 is a shaft rod of a valve plate described later, one end side of which is connected to the plunger 8 via a pin 11 and the other end side is inserted into the air passage port 4. 10 is the shaft rod 9
An O-ring 11 for packing is attached to the surface of the valve body that contacts the bottom plate 3 of the valve body. Reference numeral 12 is a coil spring which biases the valve plate 10 so that it is always closed.

Next, a second embodiment of the present invention shown in FIG. 3 will be described. The difference between this embodiment and the first embodiment is that the valve plate 10 in the first embodiment is configured to close the air passage 4 from the lower surface side of the bottom plate 3 of the valve body. In this embodiment, the structure is such that it is closed from the upper surface side.

Furthermore, in this embodiment, the O-ring 11 is attached not to the valve plate 10 but to the bottom plate 3 side of the valve body. Since the other construction is the same as that of the first embodiment, the same members are designated by the same reference numerals and detailed description thereof will be omitted.

Next, a third embodiment of the present invention shown in FIG. 4 will be described. The difference between this embodiment and the first embodiment is that the valve plate 10 is the same as the second embodiment in this embodiment from the upper surface side of the bottom plate 3 of the valve body to the air passage port 4.
There is a point that the rubber plate 13 is configured to be closed, and that a disk-shaped rubber plate 13 is used as a packing material. Since the other construction is the same as that of the first embodiment, the same members are designated by the same reference numerals and detailed description thereof will be omitted.

[0012]

EFFECTS OF THE INVENTION The present invention has the above-described structure and operation, and can automatically extract air and gas from a sealed pipe or container. Further, since the structure is simple, it can be manufactured with few failures and at low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a first embodiment of the present invention.

FIG. 2 is a side view of the first embodiment of the present invention.

FIG. 3 is a central vertical sectional front view of a second embodiment of the present invention.

FIG. 4 is a central longitudinal front view of a third embodiment of the present invention.

[Explanation of symbols]

 1 Solenoid valve body 2 Valve body 3 Bottom plate of valve body 4 Air passage 7 Solenoid 8 Plunger of solenoid 9 Valve rod of valve plate 10 Valve plate 11 O-ring 12 Coil spring 13 Disc-shaped rubber plate

Claims (1)

[Claims] 1. An air passage having a required diameter is formed in the center of a bottom plate of a valve body, and a valve plate is attached to a shaft rod whose one end side is connected to a plunger of a solenoid, and the valve plate holds the air passage. Solenoid valve for bleeding air, characterized by opening and closing.