SU31723A1 - Pressure reducing valve - Google Patents

Description

In the proposed pressure reducing valve, which is a type of pressure reducing valve with a diaphragm, regulated by a pressure spring when air is passed in the forward direction, there are forward and backward valves that open and close to allow air or gas to flow in both the forward and backward directions. directions, depending on the available pressure from the corresponding side, due to which there is no need, for example, in constant operation of the compressor with pneumatic water supply with constant pressure.

In FIG. 1 shows a vertical section of the proposed reducing valve; FIG. 2 is a section along the line AB in FIG. 1 and top view.

On the stem 7, passing through the valve body 7, are fitted the straight valves 5 and b, held by the nut 8 and the split washer 4 and adjustable by the coil spring 20. The stem 7 at the bottom rests on the stop screw 23 through the gland 26 provided with a handwheel 27 and designed to stop valve operation. In the upper part of the housing there is a membrane / b, the chamber of which is connected by channels 2, 2 with the valve box 3 and 6; in the last part of the output part (389)

with a check valve 72, adjustable by a pressure spring 5 and a channel 9 connected to the valve box.

When the expansion valve is opened, the water starts to leave the water tank under a certain air pressure, which in the direction of the arrows / - / from the pneumatic tank is directed through the valve holes fO-JO to the water tank and presses on the water, displacing it into distribution network (valves 3-6 for their commissioning are regulated by a spring 20 to create a certain pressure on the water). When air moves along arrows / - /, valves 3-6 are open and reduce air, for example, from 6 am to 4 am; At this time, the check valves J2 are closed by air pressure, and the air to them, into the box //, flows through channel 9. In this way, direct air flow is created when water flows from the water tank. When the water flow from the water tank is stopped and the pumping station begins to replenish the water flow by pumping it through the injection line, the air in the water tank is compressed and the pressure rises to 4 at 4 o With increasing pressure the air begins to flow through the channels 2.2 under the diaphragm W, the latter is curved, carries the rod and the valves 5 and €, which cover the holes W, 10.

With equal pressures both from the side of the pneumatic and from the side of the water tank (in this example

6 am); valves 3, b and 12 will be closed. As the pumping station continues to operate, the pressure in the water tank increases, and usually the air is blown out or pumped out by a compressor,

. WHAT causes unnecessary costs during the explosive attack .i

In the proposed valve, when air pressure rises in a water tank from 6 am to, for example, 6.1 am, with valves 5, 6 closed, valves 12-72 will open,

 and air with an elevated pressure of 0.1 am returns back from the water tank, in the direction of the arrows // - // under check valves 12-12 to box 11 and through channel 9 to the air reservoir.

Thus, the air is reversed.

The subject matter of the invention.

Claims (2)

1. Reduction, valve with diaphragm for compressed air or gas, adjustable pressure spring with pro-. direct air or gas inlet, characterized in that it is provided with direct and non-return valves that open and close for Air or gas in the forward and reverse direction depending on the overpressure on one side or the other of the valves. 2. The form of the reduction valve according to claim 1, characterized in that the adjustment of the check valve (pressure valve) is an independent from valve to direct direction. figl