34results about How to "Keep the air clean" patented technology

The application provides a ventilation system, comprising: a pressure-out negative pressure air duct, which is used in connection with a combined excavating and anchoring machine, the combined excavating and anchoring machine being used for excavating a first roadway; a telescopic air duct, a first end of the telescopic air duct being in communication with the pressure-out negative pressure air duct; a pressure-out positive pressure air duct, the pressure-out positive pressure air duct being used in communication with a second end of the telescopic air duct, and the pressure-out positive pressure air duct being used in communication with a return air roadway; wherein the telescopic air duct is telescopically arranged along the distribution direction of the pressure-out positive pressure air duct and the pressure-out negative pressure air duct, so that the pressure-out negative pressure air duct moves relative to the pressure-out positive pressure air duct through the telescopic air duct when the combined excavating and anchoring machine drives the pressure-out negative pressure air duct to move. The ventilation system solves the problem that dust control is difficult in the mining process of the prior art.

The utility model discloses a textile workshop ground cleaning device, and relates to the technical field of ground cleaning devices. The device comprises a device body, a maintenance plate, a moving wheel mechanism and a controller, and further comprises two sets of fixing frames which are oppositely arranged at the bottom of the device body, connecting rods are hinged to the two sets of fixing frames, and two sets of fixing discs are hinged to the ends, away from the fixing frames, of the two connecting rods respectively. The fixing frame is provided with an adjusting assembly used for adjusting the position of the fixing disc, the fixing disc extends out of the device body, the fixing disc is rotationally connected with a sweeping assembly through a rotating shaft, the fixing disc is provided with a driving assembly for driving the sweeping assembly to rotate, and the device body is provided with a spraying assembly matched with the sweeping assembly. Through the adjustable fixing disc and the cleaning assembly, the device can clean wall corners and can adapt to different workshop ground conditions and cleaning requirements, and the applicability and the cleaning effect of the device are improved.