Patent ID: 7513447

Claim:
A muller comprising: a nozzle unit including a feed line and a hollow pipe line for surrounding the feed line and radially spaced from an outer surface of the feed line, the feed line having one end into which air of high pressure and very low temperature flows and the other end at which a nozzle is provided; a mulling unit connected to the nozzle at one end thereof, the mulling unit including a mulling head spaced from the nozzle on the same axis as the nozzle therein and a downwardly tapered, opened outlet; and an input device connected to the feed line at the middle of the nozzle unit, the input device including a hopper and a feeder for supplying a material to be processed, whereby the material inputted from the input device is mixed with the air within the feed line and injected from the nozzle to collide with the mulling heads, wherein the feed line and the hollow pipe line include a first feed line and a second feed line, and a first hollow pipe line and a second hollow pipe line, respectively, wherein the nozzle unit further includes: a first connector connected to the first feed line and the first hollow pipe line, respectively, the first connector having a flow path for communicating with the first feed line, an inlet for an inflow of the air, and a refrigerant inlet, respectively, the flow path of the first connector communicating with the air inlet and the refrigerant inlet, respectively, a second connector for connecting the first feed line and the first hollow pipe line with the second feed line and the second hollow pipe line, respectively, the second connector having a flow path for communicating with the first feed line and the second feed line, and an inlet hole for an inflow of the material supplied from the input device, respectively, the flow path of the second connector communicating with the inlet hole, and a third connector for connecting the second feed line and the second hollow pipe line with the nozzle, respectively, the third connector having a flow path for communicating with the second feed line, the flow path of the third connector communicating with a flow path within the nozzle, whereby the first connector, the second connector, the third connector, the first feed line, the second feed line, the first hollow pipe line, the second hollow pipe line, and the nozzle are arranged as separate elements, each element of the nozzle unit being formed with a flange, adjacent ones of the elements being connected through the facing flanges, while interposing a sealing gasket therebetween.