| 摘要 |
FIELD: starting facilities. SUBSTANCE: device has pneumatic valve with shutoff cone provided with rod installed at input. Space to provide closing is formed inside pneumatic valve. Air starter valve has also electromagnetic valve with rod and nozzle spaces which can be placed in communication with space providing closing and through throttle and filter, with input of pneumatic valve and through throttle, with atmosphere. Novelty in proposed device is that shutoff cone is provided with holes. Power cylinder with spring- loaded piston is formed inside pneumatic valve, piston being connected with rod of shutoff cone. Space to provide closing is located in under-piston part of cylinder, and space to provide opening is formed in above-piston space of cylinder. Above-piston space can be placed in communication through shutoff space and rod space of electromagnetic valve wit pneumatic valve input, and through spaces of shutoff and nozzle with atmosphere and with space providing closing of pneumatic valve communicating with atmosphere through throttle. Branch pipe to deliver air to electromagnetic valve turned in direction of flow is installed at valve inlet. EFFECT: prevention of dust and hard particles from getting into control spaces of pneumatic valve, reduced consumption of air for valve operation. 2 cl, 1 dwg
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