Mechanical type lotion propellant rocket engine flame arrestor

The utility model discloses a mechanical type lotion propellant rocket engine flame arrestor, including being provided with the storage tank connecting portion that the lotion propellant goes out the medicine passageway, go out the piston shell that the medicine end linked firmly with the storage tank connecting portion, outer wall and internal face are formed by the face of cylinder of different diameters, and the major diameter face of cylinder of outer wall and piston shell inner wall sliding sealed fit's piston, spring on the minor diameter face of cylinder of cover wall outside the piston, one end links firmly with the piston shell, the other end stretch into in the piston and with the major diameter face of cylinder sliding sealed fit of inner surface of the piston face, and by the spacing lotion propellant gas generator of the step face between the minor diameter face of cylinder on the inner surface of the piston face and the major diameter face of cylinder, fix the porose disc seat that advances medicine mouth end at lotion propellant gas generator, the utility model discloses the principle is simple, the reliable operation, and low cost, the anti -backfire is effectual, and structural configuration is reasonable, and easily realizes microminiaturization.