Abstract: The present application proposes an air purification device with filter cartridge self-cleaning, which includes: cabinet, air filter cartridge and centrifugal fan, a first mounting plate and a second mounting plate are arranged in the interior of the cabinet from top to bottom, the first mounting plate and the second mounting plate divide the interior of the cabinet into a first chamber, a second chamber, and a third chamber, the cabinet is provided with an air inlet communicating with the first chamber, and with a plurality of air outlets communicating with the third chamber; the air filter cartridge is arranged in the second chamber, the air filter cartridge includes an end cover, a bottom cover and a filter cylinder, and the two ends of the filter cylinder are respectively connected with the end cover and the bottom cover, and the filter cylinder is used for filtering and purifying the air, a cleaning assembly is arranged in the filter cylinder for removing dust adsorbed on the filter cylinder; the centrif

Abstract: An air purification device includes a case divided into first and second chambers, a filter unit disposed in the first chamber, and a negative pressure generator disposed in the second chamber. The filter unit comprises an outer frame, a filter screen disposed in the outer frame, and a dust removing device including a dust removing assembly, a first driving mechanism and a second driving mechanism. A peripheral edge of the filter screen is connected to an inner side of the outer frame. The dust removing assembly is movably mounted on the outer frame for removing dust from the filter screen. The first driving mechanism drives the dust removing assembly to move back and forth in a width direction of the filter screen, and the second driving mechanism drives the dust removing assembly to move back and forth in a length direction of the filter screen.

Abstract: A new type of electrostatic barbed wire includes a plurality of barbs. The plurality of the barbs are woven together to form a fixed body with a strip-like structure. Ends of the plurality of the barbs are located outside the fixed body. A barbed net is also disclosed. The barbed net is woven by the electrostatic barbed wire. In the present application, the proposed new type of electrostatic barbed wire and barbed net are woven with the plurality of the barbs, and a processing technique thereof is simple.

Abstract: A urine sample device includes a funnel for receiving urine, the funnel in connection with a guide tube at a lower portion of the funnel. The urine sample device also includes a urine collection tube for collecting the urine that flows from the funnel and through the guide tube. The urine sample device further includes a guide tube fixation member located at a lower portion of the funnel and an upper portion of the guide tube along an outer periphery of the guide tube. The guide tube fixation member connected to the urine collection tube at an upper portion of the urine guide tube. The urine sample device also includes a vent located inside the guide tube fixation member.