Safety device for separating small grain composite solid rocket motor case and

A small composite solid rocket motor safety housing and grain separating apparatus, comprising a seal sealing seat mounted on the engine housing to be treated the upper and lower ends, the lower seal seat; sealing seat provided on a liquid inlet, a liquid inlet at the connection for adjusting the sense of entering into the downcomer liquid flow valve of the engine housing to be treated; flow sealing seat is provided at the liquid outlet, the liquid outlet of the downcomer is connected to sense for adjusting the effluent to be treated of the engine housing of the liquid valve; seal seat equipped with a cylindrical knife for cutting the grain to be treated within the engine housing; knife cylinder closed upper end, a lower end opening edge cylindrical structure; cutting knife down cylinder for pushing grains push lever through the sealing seat is connected with the cylinder blade; push rod contacts the sealing seat of the dynamic seal. The present invention is a safe, efficient and high investment in equipment of small advantages. Suitable for recycling scrap solid rocket motor is small.