SU542794A1 - Device for the destruction of soil by combustion products - Google Patents

Description

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The invention relates to earthmoving machines having devices for breaking ground with combustion products.

A free piston gas generator is known, which includes a combustion chamber, a floating piston and an exhaust valve, by mixing the piston of which a variable volume of the combustion chamber is provided at a constant pressure of the combustion products 1, 2.

The closest to the described technical software invention is a device for destroying the ground with combustion products, including a combustion chamber, a floating piston with a spring placed in a nadpore cavity, a controlled exhaust valve, a system for supplying a combustible mixture and an ignition system 3.

A disadvantage of the known devices is their unsatisfactory performance.

The purpose of the invention is to improve the performance of the device by regulating the volume of the combustion chamber. This is achieved by the fact that the sleeping device is equipped with a stopper mounted in the combustion chamber and interacting with the floating piston, with the piston cavity communicated via a non-return valve to the exhaust valve.

The drawing shows the proposed device for the destruction of soil by products of disposal.

The device includes: a floating piston 1 with a spring 2 placed in a naps around cavity; a exhaust valve 3 controlled by a piston; a combustible mixture supply system with a supply nozzle 4 and an ignition system with a candle 5. The device is equipped with a stopper 6 mounted in the combustion chamber 7 and interacting with the floating piston, and nadporshnev cavity communicated through the check valve 8 with the exhaust valve 3.

The device also contains a control device 9, which is equipped with a stopper, an annular stop 10 and a channel 11, made in the housing of the chamber 7. The chamber communicates through the manifold 12 with the channels of the grille 13, and the cavity 14 of the exhaust valve 3 - with the atmosphere through the throttle 15 and the cavity through the pipe 16. The exhaust valve stem 3 podrull inen spring 17.

The device works as follows.

Before starting to charge the chamber, the piston is lowered to the ring stop 10, and the exhaust valve 3 is closed. The combustible mixture is fed through the pipe 4 and the piston 1 is displaced from the ring stop upward to the distance a. Then the combustible mixture is ignited by the spark plug 5. The pressure in the chamber increases, the piston moves upward by a distance b from the stop 10 and the excess air from the piston space flows into the atmosphere through channel 11.

At the top of the stroke, the hole opens a channel in the wall of the chamber and products of combustion from the chamber through the back clan S and pipeline 16. They are pushed into the floor 14 of the exhaust valve 3, which is opened under the pressure differential and releases the products of combustion from the chamber through the manifold 12 and the grid into the ground for its destruction and movement.

As a result of the pressure drop in the chamber, the piston 1 is lowered, facilitating the emptying of the chamber. The return valve 8 is closed, keeping the overpressure in the cavity 14. At the low point of the stroke, the piston reaches the ring stop 10 and the valve 3 closes. The over-piston space is filled with atmospheric air through channel 11. From cavity 14, the combustion products are vented to the atmosphere through controlled throttle 15, the adjustment of the flow area of which provides a predetermined operating mode of the device. When it is necessary to work with a constant volume of the combustion chamber, for example, on strong soils, at the maximum pressure in the chamber, the piston is fixed at the top dead center of the stroke by means of a stopper 6, actuated by the control device 9.

By regulating the volume of the combustion chamber, the charge volume of the chamber is reduced, the response frequency of the device increases, the quality of the chamber purge is improved.

combustion and loss of combustible smb s are reduced by condensation along camera steaks. Thus, the system for activating the exhaust valve, which is associated with the floating piston, facilitates the control of the device and improves its performance when the soil of the product is destroyed by combustion.

Claims (3)

1.S. V. Bel N "Technical Thermodynamics and Heat Engines. L., “Mechanical Engineering, 1973, p. 254. 2.D. I. Adamidze, Explosive Works with High-Pressure Compressed Air, M., Gosgortekhizdat, 1963, p. nineteen. 3. US patent number 3461577, cl. 37-1, 1969 (prototype).