SU1346813A1 - Hydraulic system of power mine support - Google Patents

Abstract

The invention is intended for use in mining industry in mine mechanized supports and automated supports with reversible mains. The goal is to increase the reliability of the filter and switching devices in the drain line of the pump station. For this, the hydraulic support system has a hydraulically controlled valve (K) 4. Inlet K 4 is connected by hydroline 10 to the hydraulic distribution - (L with IC O5 CX) 00

Description

litter (GR), 1. One of the outlets To 4 is connected by hydroline 11 to the filter 2, the other exit To 4 is connected by lines 12 and 6 to the drain tank of the pumping station 7. The control cavity To 4 is connected by hydroline 13 to the drain 9. By the hydroline 14 GR 1 it is connected to the pressure main 8. With a low pressure in the line, valve K 4 is spring-loaded to the extreme position (position I). In this case, the fluid from K 4 enters the filter 2 and then into the retaining K 3, which sets a limited pressure level. It provides

one

The invention is intended for use in the mining industry in mine mechanized and automated supports with reversible main lines.

The aim of the invention is to improve the reliability of the filter and switching devices in the drain line of the pumping station.

The drawing shows the hydraulic system

The hydraulic system contains a hydraulic distributor 1 switching the line, a filter 2, a retaining valve 3, a hydraulically controlled valve 4, pressure lines 5 and discharge 6 of the pumping station 1, pressure 8 and drain 9 lines to which the hydraulic equipment sets are connected. lining. The inlet of the hydraulic valve 4 is connected by hydroline 10 to the hydraulic distributor 1, one of the outlets is connected by hydroline 11 in series with the filter 2 and the second hydroline 12 parallel to the filter 2 and the retaining valve 3 is connected to the drain tank of the pumping station 7 via the hydroline 6. The control cavity of the valve 4 is connected by hydroline 13 with a drain line 9. The valve 1 by means of a hydroline 14 is connected to a pressure line 8.

The hydraulic system works as follows.

At the position of the hydraulic distributor 1 in position A, the pump station 7 delivers fluid to the pressure line 5 and from it to the main line 8.

the implementation of the management of the support. With this, GR 1 is in position A. When GR 1 is switched to position B, pump station 7 simultaneously supplies fluid through the pressure line 5 to the pressure line 8 and through hydraulic line 14, GR 1 to the drain line 9, providing remote control of the downhole conveyor arising in the drain line 9, acts through the hydroline 13 on the gate K 4, which connects the hydroline 10. 1 Il.

From the drain line 9, a low-pressure fluid enters the control valve 1 and through it into the valve 4, the control cavity of which

D) is connected to the drain line 9. With a low pressure in the line 9, the valve valve 4 is spring-loaded to the extreme position (position I), at which the fluid from valve 4 flows into filter 2 and then into the stop valve. valve 3, which sets the O1 pressure level to them. From the retaining valve 3 in the tank of the pumping station 7, the liquid flows through the line

5 6 plum. In the lava at this time are operations for the management of support.

When switching the valve 1 to position B, pump station 7 simultaneously supplies liquid through

0 line 5 head to the line 8 head and through the line 14 n the valve 1 - in the drain line 9, providing remote control of the bottomhole conveyor. Head pressure

 arising in the drain line 9, acts through the hydroline 13 on the valve 4, which connects the line 10, going from the hydraulic distributor 1 to the valve, with the drain line 6,

0 by preparing the discharge of fluid from the line 9, by the filter 2 and the retaining valve 3. This position of the valve 4 is preserved even after the return valve 1 returns to position A to

5 as long as the pressure in the line 9 exceeds the limit level, which ensures that the filter 2 operates only at a low and safe pressure level, which is set by adjusting the valve spring 4.

Claims (1)

Invention Formula A mine mechanized roof support system, including a pressure line, a pump station with a pressure line and a drain line, a coupling filter with a pump station tank, a valve changeover valve, connected by one of the outputs to the drain line, and one of the inputs to the pressure line of the pump station , so that, in order to increase the reliability of the filter and Compiled by V.Ponomareva Editor A.Vorovich Tekhred A.Kravchuk Order 5106/33 Circulation 452 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 346813 I Kommytatsiynyx devices of the drain line of the pumping station when reversing the pressure and drain lines, it is equipped with a hydraulically controlled valve, made with a spring return and spool, which is connected to one of the outputs to the filter, and the other to the pumping station 1Q drain line, while its input is connected to the free output of the valve switching valve and the control cavity to the drain line, and the pressure line is 5 the pine station is connected to the pressure line, and the spool of the hydraulically controlled valve is made with the possibility of connecting its input to the drain line of the pumping station or the filter 2Q. Proofreader M.Sharoshi