SU1689229A1 - Pneumatic-pulse debridging device - Google Patents

Abstract

BACKGROUND OF THE INVENTION The invention relates to the breaking of arches and freezing of bulk materials in bunkers. The purpose of the invention is to increase the efficiency of the crushing. The device case is divided into two parts by an elastic partition — one part with an exhaust barrel and the other with a control valve including a cylinder with a lid, a spring-loaded piston with an annular cavity, which is configured to communicate alternately with both parts of the housing. The adjustment to the received actuation pressure is carried out by means of a spring located between the piston and the cylinder head. 2 Il.

Description

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BACKGROUND OF THE INVENTION The invention relates to devices for breaking down arches and freezing bulk materials in bunkers.

The purpose of the invention is to increase the efficiency of the crushing.

FIG. 1 shows a device during the period of filling with compressed air, a general view; in fig. 2 - the same, during the period of operation.

Pneumatic impulse device consists of a body consisting of two parts - part 1 with cover 2 and membrane 3 placed between them and barrel 4 for ejecting compressed air and part 5 separated from part 1 by an elastic partition 6.

In part 5 of the housing, a control valve 7 is installed, consisting of a cylinder 8 and a stepped piston 9. The piston 9 is preloaded with a spring LO with an adjusting screw 11, the cavity of part 5 of the housing is connected by pipeline 12 to a valve 13 with an annular cavity 14 on the piston 9. In the wall the cylinder 8 has an opening 15 for communication with the atmosphere. The cavity of the cover 2 is connected to a source of compressed air by pipes 16 to 18 fans 19. The ring cavity 14 in the extreme positions is connected to the cavities of parts 1 and 5 by pipes 20 and 12, respectively, and to the cavity of the cover 2 by pipe 21 with a check valve 22. On pipe 16 is installed valve 23.

The device works as follows.

When the valve 19 is turned on, the compressed air from the pneumatic source enters the cavity of the cover 2 and, in connection with its small volume, the membrane 3 quickly moves and presses against the barrel 4. At the same time, the air enters the annular cavity 14 of the piston S and then goes along it the pipeline 12 into the cavity of part 5. the filling of which continues to those

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until the air pressure in it reaches the value to which the spring 10 is adjusted. Upon reaching this pressure value, the piston 9 moves to the stop and the annular cavity 14 communicates between itself the pipelines 20 and 21, as a result of which the compressed air from the cavity of the cover 2 enters the cavity part 1; At the same time, the supply of compressed air to the cavity of part 5 is stopped, since the piston 9 blocks access to the pipeline 12,

Upon completion of filling the cavity of part 1 with compressed air, the device is ready for operation (shot).

The device is activated (shot) when valve 19 closes and valve 23 opens. When valve 23 is open, compressed air from the cavity of cover 2 is released into the atmosphere, causing a rapid drop in air pressure in it, membrane 3 under the action of higher air pressure in part 1 cavity detached from the exhaust barrel 4 and the air with high pulse energy is emitted through it in the zone of the frozen material,

The device provides the release of a jet of high-energy compressed air im-. pulse. This is due to the fact that the outgoing air stream is additionally affected by air through the elastic partition, which is under pressure in the cavity of part 5, as well as the elasticity of the partition 6 itself.

For the subsequent operation of the device, first close the valve 23 and then repeat all the described actions.

The use of the proposed device makes it possible to increase the efficiency of the material-collapse of the material by increasing the magnitude of the air jet pulse.

Claims (1)

Invention Formula A pneumatic impulse sabotage device comprising a housing with a lid and a membrane located between the lid and the housing with the formation of a cavity, a barrel installed in the housing for air discharge, an air supply system consisting of pneumatic tubing and valves, control valve, characterized in that, in order to increase the efficiency of the collapse by providing the ability to control and increase the magnitude of the impulse of the air stream when it is discharged from the exhaust barrel, it is equipped with a dividing body into an elastic partition into the part a housing comprising a lid and a membrane, wherein the housing is provided with fittings fixed in the second part with a discharge valve and an air distribution unit consisting of a cylinder with a lid and placed in eat a spring-loaded piston made with his the surfaces are annular grooves, with holes in the wall of the cylinder for alternately communicating via pneumatic tubing with the valves of the cavities formed by annular grooves on the spring-loaded piston and the wall of the cylinder, with the body cavity under the membrane and the cavity formed by the cover and the membrane. // 18 Fm.1