JPH0424217Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an air valve, and more specifically, the invention relates to an air valve. A floating valve body that opens and closes, a first float that pushes up the floating valve body to close the valve body, and a cylindrical guide that guides the vertical movement of the floating valve body and the first float, and further includes a valve body. The present invention relates to an air valve for sewage and agricultural water, in which a second float for pushing up the first float is installed in the lower part of the valve via an interlocking rod.

[Conventional technology]

Conventionally, in the above-mentioned pneumatic valves for sewage and agricultural water use, a guide that houses the floating valve body and the first float is mounted so as to be movable up and down along the inner circumferential surface of the upper part of the valve box, and the guide is attached to the floating valve body to allow the second float to float. Accordingly, by lifting and operating the floating valve body and the first float together with the guide, the large and small vents are sequentially opened and closed. was divided above the lower end of the guide (see, for example, Japanese Utility Model Application No. 139973/1983).

[Problem that the invention attempts to solve]

The above-mentioned conventional air valve for sewage and agricultural water is completed as a single air valve by combining the upper divided part and the lower divided part, and the guide protrudes from the lower end of the upper divided part. Because it has a split configuration, the first float is equipped with the components required for a general air valve, such as a vent, a floating valve body, a first float, and a guide, but the upper split part cannot be used alone. It could not be used as a general air valve.

Therefore, on the manufacturer side, sewage and
It is necessary to manufacture the air valve for agricultural and water use and the air valve for general use completely separately, which poses the problem of high production costs as a whole.

The purpose of the present invention is to achieve dual use as an air valve for sewage/agriculture and general use with extremely simple improvements.

[Means for solving problems]

The technical means of the present invention taken to achieve the above object includes: a floating valve body that opens and closes the vent in a valve box having a vent at the upper end and a fluid inlet at the lower end; A first float that pushes up and closes the floating valve body, and a cylindrical guide that guides the vertical movement of the floating valve body and the first float are installed inside the valve body, and an interlocking rod is provided at the lower part of the valve body. In an air valve for sewage and agricultural water, which is equipped with a second float that pushes up the first float through the air valve,
The present invention is equipped with the configurations described in [A] to [B] below.

[A] The valve box is formed by a combination of an upper divided portion including the vent, a floating valve body, a first float, and a guide, and a lower divided portion including the second float.

[B] The guide includes the floating valve body and the first
A float is fixed to the upper divided portion in a state in which it is movable up and down, and a through hole is formed at the bottom through which the interlocking rod is inserted so as to be movable up and down.

[C] The dividing position of the upper divided portion and the lower divided portion of the valve box is set lower than the lower end of the guide, and
The float and the interlocking rod are configured to be separable from each other.

[Effect]

The effects of taking the above technical measures are as follows.

In other words, with the above configuration, while the guide is fixed to the valve box side, the movement of the second float can be transmitted to the first float through the through hole formed at the bottom of the guide, so the valve box can be moved up and down. Even if the valve box is divided into parts, only the upper part of the valve box can maintain its role as an air valve.

Moreover, since the valve body is divided below the guide, the guide does not protrude from the lower end of the upper divided part even after being divided. Therefore, when the lower divided part and the interlocking rod are removed, Vent, floating valve body,
The upper divided portion including the first float and the guide can be used alone as a general air valve.

[Effect of idea]

Due to the above effects, manufacturers have decided to make the upper part of the sewage/agriculture air valve and the general air valve have the same structure so that they can be used together, thereby reducing the number of manufactured products and reducing the overall production cost. This has the effect of making it possible to reduce the

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a pipe line 2 to be
The valve box 5 has a fluid inlet 3 at the lower end and a vent 4 at the upper end.
The interior includes a floating valve body 6 that opens and closes, a first float 7 that pushes up the floating valve body 6 to close it, and a bottomed cylindrical guide 8 that guides the floating valve body 6 and the first float 7 to move up and down. On the other hand, at the bottom of the valve box 5,
A second float 10 that pushes up the first float 7 via the interlocking rod 9 as the water level inside the valve box rises;
A seat 11 for the second float 10 is provided inside. The guide 8 is fixed to the upper divided portion 5A with the floating valve body 6 and the first float 7 housed therein so as to be able to move up and down, and the interlocking rod 9 is attached to the bottom of the guide 8 so as to be able to move up and down. A through hole 8a is formed for insertion.

That is, when the exhaust from the vent 4 progresses and the water level of the fluid that has flowed into the valve box 5 from the target pipe line 2 rises, the second float 10 rises accordingly, and the first The float 7 and the floating valve body 6 are pushed up, and the vent 4 is automatically closed by the floating valve body 6, as shown in FIG.

In addition, a cleaning water supply port 13 with an on-off valve 12 is formed in the valve box 5, and during cleaning, the cleaning water is supplied with the three-way repair valve 1 switched to the cleaning position as shown in FIG. By discharging the wash water supplied into the valve box 5 from the port 3 through the opened drain valve 14, the inside of the valve box 5 can be cleaned by discharging the waste water and the dust inside the valve box.

The floating valve body 6 is formed with a small ventilation hole 15 that is closed when the first float 7 comes into contact with it, and when the air mixed in the fluid flowing through the target pipe line 2 accumulates in the valve box 5, When the water level in the valve box 5 falls, the first and second floats 7 and 10 fall accordingly, causing the first float 7 to separate from the floating valve body 6, opening the small ventilation hole 15, and then, Air inside the valve box 5 is exhausted from the ventilation hole 15. and,
When the water level rises again as air is discharged from the ventilation hole 15, the second float 10 pushes up the first float 7 and closes the ventilation hole 15. Additionally, when the water level in the valve box 5 decreases due to fluid in the target pipe 2 being discharged from another location, and the pressure inside the valve box 5 becomes negative, the first and second floats 7 and 10 descend. At the same time, the floating valve body 6 is configured to smoothly lower and open the valve under its own weight.

The valve box 5 has an upper divided portion 5 including a vent 4, a floating valve body 6, a first float 7, and a guide 8.
A, a second float 10, and a lower divided part 5B that includes a seat 11 thereof, and the mutual connection of both divided parts 5A and 5B is a flange structure, and the two divided parts are connected by bolts 16. 5
A and 5B are connected.

Further, the dividing position of both divided portions 5A and 5B is lower than the lower end of the guide 8, and the interlocking rod 9
The interlocking rod 9 and the first float 7 are designed so that they can be separated from each other, so that the first float 7 is only brought into contact with the end thereof.

In other words, by arranging the division positions as described above and by making the first float 7 and the interlocking rod 9 separable, the vent 4, the floating valve body 6, the first float 7, and the guide 8 can be connected to each other. The upper divided part 5A, which has the structure required for a general air valve, can be used alone as a general air valve as shown in FIG. It is also used as an air valve.

[Another example]

Next, other embodiments of the present invention will be listed.

(a) Various improvements can be made to the specific shapes and structures of the floating valve body 6, the first float 7, the guide 8, and the second float 10.

(b) The first float 7 and the interlocking rod 9 may be connected by a threaded structure or an appropriate connector as long as they have a structure that allows separation.

(c) Various improvements can be made to the specific shapes and structures of the upper divided portion 5A and lower divided portion 5B of the valve box 5, and the specific connection structure between the two divided portions 5A and 5B. Various improvements are possible.

(d) The air valve for sewage and agricultural water that combines the upper divided part 5A and the lower divided part 5B is suitable for sewage and agricultural water, but the target fluid is not limited to sewage and agricultural water. Further, when the upper divided portion 5A is used alone as a general air valve, the target fluid is not limited.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention,
FIG. 1 is an overall sectional view, FIG. 2 is a view showing the valve in a closed state, FIG. 3 is a view showing a cleaning state, and FIG. 4 is a sectional view showing a state in which it is used as a general air valve. 3...Fluid inlet, 4...Vent, 5...Valve box, 5A...Upper side division part, 5B...Lower side division part, 6...Idle valve body, 7...First float,
8...Guide, 9...Interlocking rod, 10...Second float.

Claims (1)

[Claims for Utility Model Registration] A floating valve body 6 for opening and closing the vent 4 is provided in a valve box 5 having a vent 4 formed at the upper end and a fluid inlet 3 at the lower end, and the floating valve. A first float 7 that pushes up the body 6 to close it, and a cylindrical guide 8 that guides the floating valve body 6 and the first float 7 up and down are installed inside the valve body 5, and further, in the lower part of the valve body 5, This air valve for sewage and agricultural water is equipped with a second float 10 that pushes up the first float 7 via an interlocking rod 9, and has the configurations described in [A] to [B] below. [B] The valve box 5 is divided into an upper divided portion 5A including the vent 4, the floating valve body 6, the first float 7, and the guide 8, and the second float 10.
It is formed in combination with the lower side divided portion 5B having the following. [B] The guide 8 is fixed to the upper divided portion 5A with the floating valve body 6 and the first float 7 housed therein so as to be able to rise and fall freely, and
A through hole 8a is formed at the bottom, through which the interlocking rod 9 is inserted so as to be vertically movable. [C] The dividing position of the upper divided portion 5A and the lower divided portion 5B of the valve box 5 is determined by the guide 8.
The first float 7 and the interlocking rod 9 are configured to be separable from each other.