| 摘要 |
PURPOSE: To provide a check type pressure nozzle which is constructed in a round shape so that the nozzle injects nitrogen into a feed hopper in an angle corresponding to the nozzle shape and prevents backflown pulverized coal from being penetrated into the nozzle to prevent wear of the nozzle and feed hopper and hunting of pulverized coal injection quantity. CONSTITUTION: A check type pressure nozzle of pulverized coal injection feed hopper comprises a body nozzle(100) which is clamped to an end of a branch pipe for uniformly pressurizing nitrogen during pulverized coal injection, in which a hole(180) inclined to an angle corresponding to a round angle of the feed hopper is formed, and on both side surfaces of which injection ports(170) communicated with the hole are formed; an approximately triangle shaped moved object(200) which has an inclination angle corresponding to an inclination angle of the hole and is inserted into the injection ports to selectively open or close the hole; and a socket bolt(150) which is inserted into the backside of the nozzle body and disposed in such a way that a front portion of the socket bolt elastically presses the moved object.
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