| 摘要 |
The present invention relates to an exhaust unit for repair and maintenance, which is capable of spraying drug and has a replaceable filter. According to the present invention, the exhaust unit, which filters a toxic exhaust gas before releasing the gas to the outside, comprises: a unit pipe body (100) which is located on an exhaust side of a body having an inner space and includes a guiding hole for guiding a toxic gas generated in the inner space to the outside; a hole covering plate (200) removably joined on the entrance of the guiding hole of the unit pipe body (100); a filter (300) located in the middle portion of the unit pipe body (100) and removably joined in a downward direction by a coupling means, and filtering contaminants from a gas discharged through the guiding hole and releasing the filtered gas to the outside; a spray nozzle (400) whose one end forms a fixing opening, which is removably fixed on the inner wall of the entrance of the guiding hole of the unit pipe body (100), while being selectively connected to a tube connected to a drug-containing chamber on the outside, and whose the other end forms a drug spraying port including a plurality of nozzle holes on the external surface thereof such that liquids are sprayed from the bottom surface of the filter; and an opening/closing pipe (500) which is disposed on the exit side of the unit pipe body (100) and opens or closes the guiding hole by being rotated. |
