PNEUMATIC-PULSE GENERATOR FOR SURFACE CLEANING Russian patent published in 2010 - IPC F28G1/16 

FIELD: power engineering.

SUBSTANCE: generator consists of accumulating tank, of lock case rigidly fixed on bottom of said tank, also relief valve is installed in through cylinder cavity of lock case; through cylinder cavity is constantly communicated with accumulating tank via discharge channel and is equipped with blind cover on one end and with exhaust pipe on another; relief valve is conjugated with said cavity on side surface; together with blind cover it forms control chamber continuously communicated with source of compressed gas; control chamber is constantly connected with accumulating tank via channels in case; notably, control chamber is constantly tied with atmosphere trough lock element secured in cover. The relief valve is made in form of a cylinder two-step cartridge with a blind bottom; the free end of bigger by diametre step of the cartridge is constantly in the control chamber, while its lesser step periodically enters into a corresponding to it by diametre coaxial groove at valve locking; the groove is formed at the entrance into exhaust pipe; also exhaust pipe is made integral with the case; with its free end equipped with packing it contact surface of end belt facing the case; the end belt is created with a coaxial groove at the internal side wall of the exhaust pipe. The end belt located between side surfaces of small and big steps of the valve is constantly inside a circular groove created on internal side surface of the case; the circular groove envelops the bigger step of the valve; also the discharge channel from the accumulating tank enters through side surface of the bigger step of the valve into the cavity of the case. The blind bottom placed inside the big step of the valve consists of the free end of the blind cover facing the valve at distance in essence equal to maximal lengthwise stroke of the valve.

EFFECT: increased reliability and efficiency of generator operation.

1 dwg