PURPOSE: To provide a gun for a highly viscous fluid for preventing the small amount emission of the highly viscous fluid from an emitting orifice after the gun is turned OFF, constituted so that an reciprocal lever advances and retracts in an emitting chamber with the advance and retraction of an auxiliary piston when the jet value of the fluid is opened and closed with the advance and retraction of a main piston.
CONSTITUTION: A pilot signal So applied to the introducing port 35 of a signal fluid So is sent to a space C in such a state that a highly viscous fluid (l) to be injected is supplied from an inlet 13 and an auxiliary piston 50 is pushed to left. At the same time, the signal So enters a space A through a compressed fluid passage 36 to push a main piston 40 to right. As a result, the reciprocal lever 51 integrally fixed to the piston 50 is moved to left and allowed to advance into the fluid emitting chamber 26 of a nozzle 24. On the other hand, a valve stem 1 integrally fixed to the piston 40 is moved to right and the valve body 42 provided to the leading end thereof is spaced apart from a valve seat part 22. Therefore, the fluid (l) entering a fluid chamber 21 through a fluid passage 12 and a fluid chamber 11 is sent to the fluid emitting chamber 26 through a passing orifice 23 to be emitted from the nozzle orifice 27 through the hollow bore of the nozzle 24.
OOTA KOUJI
HASHIMOTO HIROBUMI
KUSUNOKI HAJIME
HAYASHI SENSUKE
