SU393475A1 - PISTON ENGINE - Google Patents

Description

one

Reciprocating reciprocating hydraulic motors are known, supplied from a constant pressure fluid source with a distributor automatically reversible to the extreme positions of the piston, which is located coaxially with the engine.

However, due to the large radial dimensions, the known hydraulic motors cannot be used as a drive for a submersible pump, for example, for polluted media.

To reduce the radial dimensions of the hydraulic motor and ensure reliable operation on contaminated liquids, the distributor is designed as coaxially arranged two pairs of valves, an auxiliary piston with a rod, and a piston-driven hydraulic piston controlled by a piston.

The drawing shows the structural scheme of the hydraulic engine.

The pressurized fluid is supplied through the orifice / in the cavity 2-5 and acts on the piston of the hydraulic engine from below. The piston moves up, displacing the working fluid from the upper cavity of the cylinder 7 into the cavity 8 and further through the hole 9 and the cavity 10 into the drain line //. At the end of the upward stroke, the piston 6 raises the piston rod 13 through the annular juice 12. The pressure of the valve 14 also rises and closes

opening 15, disconnecting the drain line 16. Raising, the pilot rod opens the ball valve 17, and the pressurized fluid from the cavity 4 enters the cavities 18 and 19. The piston with the piston rod 20 is stirred up, the valve 21 rises under the pressure of the fluid and closes the opening 9. As a result, the drainage of fluid from the upper working cavity of the hydraulic engine is stopped. With

Further movement of the piston with the rod 20, the latter opens the ball valve 22, the pressurized fluid from the cavity 2 enters the upper working cavity of the hydraulic engine, and the piston 6 moves downwards. With

approach to the lower position of the piston 6 by means of a flange 23 t no rod-pilot down. The valve 17 is closed, the valve 14 is opened, the cavity 19 is connected to the drain, and the piston with the rod 20 moves downward. Following up

This closes the valve 22, and then opens the opening 9. The cavity under the piston 6 is connected to the drain, and the piston moves up again. With 6 piston hydrodv, igatel through rod 24

The piston 25 of the pump, which is moved in the cylinder 26, is rigidly connected. When the piston 25 moves upward through the valve 27, liquid is drawn in. During the course of this piston down the liquid through the valve 28 enters the working cavity

the pump above the piston, and from there during the course of the piston