SU123502A1 - Device for increasing the pressure of water in the pipeline during hydraulic coal blasting - Google Patents

Description

DEVICE FOR INCREASING THE WATER PRESSURE IN THE PIPELINE DURING HYDRAULIC COAL RELEASE

4 November 1949 for L 421758 in State Technical Institute of the USSR Published in the Bulletin of Inventions L 21 for 1959

The known devices for increasing the pressure of water in the pipeline during hydraulic coal blasting do not provide a continuously pulsating supply of water with normal and elevated pressure to the jetting machine.

In the proposed device, this disadvantage is eliminated by the fact that a check valve is mounted between the supply pipe, the pipeline and the small diameter cylinder. In addition, the device case is assembled from two flange nozzles of different diameters, in which twin pistons are attached, and a larger diameter cylinder (tube) periodically communicates with the atmosphere or the supply pipeline using a remote-controlled three-way valve. The device provides a continuous and pulsating supply of normal and elevated water to the jetting machine.

The drawing shows a General view of the device.

When the device is idle, water is supplied to the jet monitor / supplied through pipe 2 through the non-return valve 5. Then, if it is required to obtain a pulsating pressure of water, the handle 4 of the three-way valve 5 is started to rotate in series with the large cylinder 6 with the water 7 or atmosphere. Rotation of the handle of the three-way valve can be performed remotely, hydraulically or electrically. When the large cylinder 6 is connected to the water line, the piston 8 is advanced and advances the piston 9, squeezing water out of the small cylinder 10, at which time the pressure in the small cylinder rises significantly and water under this pressure flows into the monitor. In this case, the check valve 5 is closed. The pressure value is determined by the ratio of the areas of the large and small pistons, as well as by the speed of rotation of the valve. When the large cylinder is connected to the atmosphere, the check valve 3 opens and the water, entering the monitor with normal pressure, depresses to the initial

No. 123502-2 is a small position, and with it a large piston that squeezes water out of a large cylinder. Thus, a full cycle is performed.

Subject invention

Claims (3)

1. A device for increasing the pressure of water in the pipeline during hydraulic coal blasting, characterized in that for a continuous and pulsating supply to the water jetting machine of normal and increased pressure, a check valve is built in between the supply pipe and the small diameter cylinder. 2. The form of the apparatus according to claim I, characterized in that its casing is assembled from two flange nozzles of different diameters in which the twin pistons are placed. 3. The form of the device according to paragraphs. 1 and 2, characterized in that the cylinder of large diameter is intermittently connected with the atmosphere or the supply line by means of a remotely switched three-way valve.