SU899918A1 - Apparatus for boosting liquid pressure - Google Patents

Description

(54) DEVICE FOR INCREASING PRESSURE

one

The invention relates to stone cutting equipment and can be used in the stone processing industry.

A device for increasing the pressure of a fluid, comprising a power cylinder, a housing connected to a hydraulic pulse chamber 1 is known.

A disadvantage of this device is low work efficiency.

The closest to the invention in technical essence and the achieved effect is a device for increasing fluid pressure, including a power cylinder with a partition, two pistons with rods and supports 2.

A disadvantage of the known device is that the increase in fluid pressure is limited to leaks, between the brush.

and a barrel, since the creation of an effective seal that reliably operates at high pressure drops is an unsolved problem.

The purpose of the invention is to increase work efficiency.

This goal is achieved by the fact that in the device for increasing the liquid, including FLUID

power hydraulic cylinder with a partition, two pistons with brushes and stops, the hydraulic cylinder is equipped with an additional partition, induction coil located between the partitions, check valves and shut-off valve with shanks installed with the possibility of interaction with the induction coil, while the shutters of the locking valve have longitudinal holes In which are located the shtoki with stops.

ten

The drawing shows a schematic of a device for pressurizing.

The device consists of a hydraulic cylinder 1. divided by partitions 2 and 3 into three chambers. In the extreme cameras are installed

15 pistons 4 and 5 with brushes 6, 7 and 8, 9. Stops 10 and 11 are fixed at the ends of the brushes 7 and 8. In the middle chamber connected by pipe 12 through the accumulator 13 to the high-pressure oil pump is installed in the induction coil 14 valve 15 with shanks. The ends 16 and 17 are fixed at the ends of the shanks. The axes 7 and 8 are located in the axial holes of the shanks. The chambers formed by pistons 4 and 5 and partitions 2 and 3 are connected to the drain

line through shut-off valves 18 and 19, respectively. The shafts of check valves 18 and 19 are located inside the induction coils 20 and 21. The chambers formed by pistons 4 and 5 and the bottom, cylinder 1 are connected through check valves 22 and 23 to a water pump, through check valves 24 n 25 - with a nozzle 26 and through shut-off valves 27 and 28 - with a drain line.

The valves 27 and 28 are spring-loaded and fixed on the two-shoulder levers 29 and 30, which are installed pivotally on the bottoms of the cylinder 1. Under the nozzle 26 a slab of stone 31 is installed.

The operation of the device consists in that the chambers formed by the bottoms of the cylinder 1 and the pistons 4 and 5 are alternately filled with water with a small pressure, which is then squeezed out through the nozzle 26 alternately the pistons 4 and 5, driven by the oil supplied under a large pressure alternately into chambers formed by bulkheads 2 and 3 and pistons 4 and 5. Suppose, for example, the piston 5 is in the upper position, the piston 4 is also in the upper position, the valve 15 closes the opening in the partition 2, the shut-off valves 19 and 28 are closed. Then the oil, entering high pressure from line 12 through the open axial opening in the partition 3 into the chamber between partition 3 and the piston 5, moves the piston 5 down, and the water from the chamber between the piston 5 and the bottom of the cylinder 1, opens the check valve 25, enters the nozzle 26 and makes cutting the slab out of the stone 31. At the same time, the check valve 24 blocks the flow of water into the chamber between the piston 4 and the bottom of the cylinder 1. When the piston 5 moves down, the piston 4 also moves downwards due to the pressure of water coming from the water pump through back to apan 22. When this shut-off valve 19 is closed, since the induction coil draws the shank of the valve. The piston 4 moves faster than the piston 5, since the water pump delivers more fluid than the flow rate through the calibrated orifice in the charge box 26. When the piston 4 reaches the lower position, the induction coil 20 switches, the valve stem 18 pulls into the coil 20 and valve 18 is closed.

When the piston 5 moves downward, the rod 8 moves out of the hole in the valve stem 15 until the stop 11 comes into contact with the stop 17 fixed to the end of the tail.

When the piston 5 moves down, before the stop 11 comes into contact with the stop 17, the rod 9 comes into contact with the shoulder of the double-arm lever 30 and, overcoming the high water pressure acting on the valve 28, opens the valve 28. Then the stop 11 enters

contact with the stop 17 and the piston 5 opens the valve 15 from the hole in the baffle 2. Simultaneously, the induction coil 14 is turned on, which pushes the valve 15 down, and the valve 15 closes the hole in the baffle 3. High pressure oil passes through the hole in the baffle 2 into the chamber between the piston 4 enters the piston 4 and the baffle 2 and the valve 4 enters into operation. The valve 15 moves down at a higher speed than the piston 5, therefore the rod 8 moves again

into the axial hole in the shank of the valve 15. After the valve 15 closes the hole in the septum 3, fluid continues to flow as the valve 28 is open and the pressure drops in the chamber between the piston 5 and the septum 3 due to the fact that the piston 5 has the ability to move down , as the rod is pushed into the axial bore of the shank.

Then the induction coil 21 is switched in such a way that

push out the valve stem 19, and after the pressure in the chamber drops, the valve 19 opens and under the pressure of water flowing through the check valve 23 into the chamber between the reservoir 5 and the bottom, the piston 5 raises the oil out of the chamber between the reservoir 5 and a baffle 3. Moreover, after the brush 9 comes out of contact with the lever arm 30, the valve 28 is closed by the action of the springs. Water inflow under high. the pressure from the line connecting to the nozzle 26 is prevented by the check valve 25.

After reaching the extreme upper position by the pitch 5, the induction coil 21 is switched, the valve stem 19 is retracted and the valve 19 is closed. Then, after the piston 4 reaches the upper position and opens the hole in the bulkhead 3, the cycle of operation of the device is repeated again. Water, flowing under high pressure from the nozzle 26, produces cutting

slabs of stone 31.

Dissolved water pumps do not provide enough water pressure to cut rocks.

The proposed device allows the oil pressure generated by the high pressure oil pump to be converted to a water pressure sufficient to cut the rock.

The device allows the conversion of high oil pressure to water pressure with minor leaks due to the use of valve manifolds providing complete sealing.

The division of the cylinder by partitions into three chambers and the installation in the extreme chambers of the plates ensures the continuous supply of water to the cutting zone, carried out alternately by two pistons from the chambers formed by these pistons and the cylinder heads.

Claims (2)

1. USSR author's certificate number 250825, cl. E 21 C 25/60, 1968. 2. USSR author's certificate No. 385043, cl. E 21 C 45/00, 1973 (prototype).