| 摘要 |
FIELD: civil engineering, mining, metallurgy, and food industry; devices for restoration of looseness of dispersed materials. SUBSTANCE: device has inlet branch pipe 2 and outlet branch pipe 3 and barrel 5 through which air is ejected. Barrel is stopped by piston 9 whose movement is limited by stop 10. Projections 15 on inner surface of outer cylinder 6 form space through which air from inlet branch pipe 2 gets through holes 12 into piston space. Housing is divided by partition 12 with through holes. Ejection of air is provided when outlet branch pipe 3 is connected with atmosphere through control device 4. To provide reliable locking of barrel cylindrical recess 16 is made in piston end face and circular groove 17 is made in housing around inlet hole of barrel. Diameter of recess 16 exceeds inner diameter of groove 17 which is filled with shock absorbing material. EFFECT: improved operation reliability. |
