SU941771A1 - Air-escape valve - Google Patents

Description

(54) VANTOUZ

one

The invention relates to pipe fittings, in particular to devices providing air inlet and outlet in conduits.

Known plunger containing air, boron chamber and an exhaust device with a float valve, and the exhaust device is connected to the air intake chamber and the main pipeline through channels equipped with locking devices 1.

The main disadvantages of such a plunger are the large size, freezing, and low reliability of the process of filling and emptying the main pipeline due to the inertia of the valve.

Also known plunger, containing the air-collecting chamber, the exhaust device and the pipe with a shut-off valve connected by a lever with a float 2.

The disadvantage of such a plunger is its limited functionality due to the inability to automatically control the flow rate of air inlet or outlet from the main pipeline at operating pressure therein.

The purpose of the invention is to expand the functionality of the plunger and to enable it to be repaired without disconnecting the main pipeline.

five

This goal is achieved by the fact that in a plunger containing an air collection chamber, an exhaust device and a socket with a shut-off valve connected by a lever

 with a float, the exhaust device is equipped with an additional valve, the flow area of which is larger than the flow area and the check valve, and the additional valve is supported through a brush placed in the chamber on the diaphragm forming with the chamber

15 a closed cavity, which is connected by means of a throttle orifice with an outlet, and with an air collection chamber, a channel in which a shut-off valve is installed.

In addition, the air collection chamber is connected to the main pipeline via connecting channels equipped with shut-off devices.

The drawing shows a schematic representation of the proposed plunger.

The plunger contains an air-collecting chamber 1, an outlet 2, a shut-off valve 3 with a lever 4 and a float 5, an additional valve 6 with a stem 7, a membrane 8, a closed cavity 9, a throttle bore 10, a channel 11, a filter mesh 12, connecting channels 13, shut-off the device 14 and the repair hatch 15. The plunger is installed directly in the upper part of the main pipeline 16.

The plunger works as follows.

If there is no water in the main pipeline 16 and, accordingly, in the air collecting chamber 1, the float 5 is lowered, the shut-off valve 3 is open and communicates the air collection chamber 1 through channel I, the throttle hole 10 and the outlet 2 with the atmosphere. Moreover, the additional valve 6 is closed under its own weight.

As the main pipeline 16 is filled with water, air from it through the connecting channels 13 enters the air collecting chamber 1 and from it through the open shut-off valve 3, channel 11 and the throttle opening 10 into the outlet 2 When the pressure in the main pipeline 16 increases and, accordingly, the air flow coming into the air collection

chamber 1, an increase in pressure occurs in the closed cavity 9, the membrane 8 bends upward and opens an additional valve 6 for venting air from the air collection chamber 1 with a high flow rate.

When the main pipeline 16 is completely filled with water, it also fills the air collecting chamber 1. The float 5 rises up and through the lever 4 closes the shut-off valve 3. The pressure in the closed cavity 9 drops to atmospheric, the membrane 8 bends downwards and the additional valve 6 closes.

If in a pipeline completely filled with water, under working pressure, air flows through the valve, it will assemble in air collection chamber 1. As a result, the float 5 will fall down and through the lever 4 will open the shut-off valve 3. At the same time, the air will be released into the exhaust pipe under working pressure 2 and through it to the atmosphere or through the throttle orifice 10, or through an additional valve 6.

In the case of emptying the main pipeline 16, the water level in the air collecting chamber 1 is lowered. The float 5 goes down and through the lever 4 opens the shut-off valve 3. At the same time, the air from the rhythmos through the outlet 2, the throttle hole 10 and the channel 11 enters the air collecting chamber 1 and from it through the connecting channels 13 into the main pipeline 16. If the main pipeline 16 it is emptied at a high speed, a vacuum is formed in it, and air flows into it through an additional valve 6, which opens directly under the action of atmospheric pressure.

In case of malfunctions in the work of the plunger, its repair can be carried out without stopping the operation of the main pipeline 16 by disconnecting the plunger from it using shut-off devices 14.

Thus, the supply of the exhaust device with an additional valve, the flow area of which is greater than the flow area of the check valve, the additional valve being supported through the stem on the diaphragm forming a closed loop, which is connected through an orifice to the air inlet chamber — the channel in which a shut-off valve allows for increased functionality of the vent. And the communication of the air-collecting chamber with the main pipeline with the help of connecting channels equipped with shut-off devices ensures the possibility of repairing the plunger without disconnecting the main pipeline.

Claims (2)

1. A plunger containing an air-collecting chamber, an exhaust device and a port with a shut-off valve connected by a lever with a float, characterized in that, in order to expand its functionality, the exhaust device is equipped with an additional valve, the flow area of which is more than that of the shut-off valve, and the additional valve supported through the rod, placed in the chamber, on the membrane, which forms a closed cavity with the chamber, which is connected by means of a throttle opening to the outlet, and air collection chamber - channel in which the shut-off valve is mounted. 2. Vantuz on p. 1, characterized in that, in order to enable the manufacture of its repair without disconnecting the main pipeline, the air collection chamber communicates with the main pipeline by means of connecting channels equipped with shut-off devices. Sources of information taken into account in the examination 1. USSR author's certificate number 171534, cl. F 16 K 24/00, 1964. 2. USSR author's certificate No. 643712, cl. F 16 T 1/45, 1977 (prototype). sixteen