Vacuum sweeper with rear-mounted fan

Abstract

The invention relates to the technical field of cleaning vehicles, in particular to a vacuum sweeper with a rear-mounted fan. The vacuum sweeper with the rear-mounted fan comprises a carriage, and thefan and a power machine are arranged on the rear side of the carriage. A subsidence box is arranged on the rear side of the fan, the subsidence box is provided with a garbage suction device, and a filter screen is arranged between the subsidence box and a suction opening of the fan. A garbage can is arranged on the front side of the fan, the fan is provided with a sound reduction exhaust outlet extending into the garbage can, and an exhaust device is arranged on the upper part of the garbage can. The vacuum sweeper with the rear-mounted fan had the advantages that 1, wind force from the garbage suction device to the exhaust device is gradually decreased, large and heavier garbage falls into the subsidence box due to reduced suction and cannot be blocked at the position of the filter screen, smaller garbage penetrates through the filter screen and penetrates through the fan to enter into the garbage can, the wind force is further decreased and generally does not rise to a filter element to block the filter element, an air duct is unobstructed, and the wind force cannot be decreased due to blocking; 2, noise pollution is reduced; and 3, the fan can quickly empty the subsidence box to form negative pressure, and the working efficiency of the wind force is improved.

Description

technical field [0001] The invention relates to the technical field of cleaning vehicles, in particular to a fan rear mounted vacuum cleaning vehicle. Background technique [0002] Vacuum trucks (or road sweepers) are commonly used sanitation equipment, which can clean the road surface and are widely used in highway, park, municipal and other road cleaning. Existing vacuum cleaners generally first use the sweeping mechanism to gather garbage together, and then use vacuum negative pressure to suck the garbage into the vehicle-mounted garbage bin. [0003] The blower fan of existing vacuum cleaner is generally installed near the front portion of the compartment. Negative pressure is generated in the dustbin and the suction nozzle. Due to the large volume of the dustbin, the air in the dustbin needs to be pumped out before it can generate suction on the road surface, which makes the suction power weak for a period of time when the fan is turned on and off, and cannot vacuum. ...

AI Technical Summary

Problems solved by technology

[0003] The blower fan of existing vacuum cleaner is generally installed near the front portion of the compartment. Negative pressure is generated in the dustbin and the suction nozzle. Due to the large volume of the dustbin, the air in the dustbin needs to be pumped out before it can generate suction on the road surface, which makes the suction power weak for a period of time when the fan is turned on and off, and cannot vacuum. Reduced energy utilization efficiency; in addition, after the sweeper works for a period of time, dust and garbage are easily blocked at the filter element or screen, which reduces the efficiency of the fan

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