Exhaust fan capable of purifying toxic gases

• Main Author: CAI KAIKAI
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SEPARATION; TRANSPORTING; WEAPONS

The utility model provides an exhaust fan capable of purifying toxic gases. The exhaust fan comprises a base, a fan, an exhaust fan air inlet, an exhaust fan air outlet and an exhaust fan casing. The exhaust fan is characterized by further comprising a filter, a liquid groove, a liquid injection pipe, a residue liquid drain pipeline, a valve and a spray device, wherein the fan is mounted on the base, the exhaust fan air inlet and the exhaust fan air outlet are formed in the exhaust fan casing, the fan is connected with the exhaust fan air inlet, the filter and the spray device are arranged in the exhaust fan casing, the liquid groove is formed in the exhaust fan casing, the liquid injection pipe is arranged on the liquid groove, the residue liquid drain pipeline is arranged at the lower end of the liquid groove, the valve is arranged on the residue liquid drain pipeline, and the back end of the liquid groove is connected with the exhaust fan air outlet. Waste gas is absorbed by using physical properties of activated carbon and chemical properties of alkali liquor, emission of dust and toxic gases can be effectively reduced, and environmental pollution is reduced. The spray device can be used for cleaning the exhaust fan.