4results about How to "Suction in time" patented technology

The invention relates to the technical field of diesel engine part welding tools, in particular to a diesel engine branch pipe and flange assembling, welding and positioning device which comprises a base, a containing disc is installed at the top of the base, first radial guide grooves are evenly formed in the containing disc at intervals, and clamping blocks are arranged in the first radial guide grooves in a sliding mode. A mounting seat is fixedly connected to the bottom of the placement disc, a lifting disc is slidably arranged on the mounting seat, a second gear ring is rotatably arranged on the circumferential outer wall of the placement disc, positioning shafts are rotatably arranged on the circumferential direction of the placement disc at uniform intervals, and driven gears meshed with the second gear ring are mounted on the positioning shafts. When the second gear ring rotates, the driven gear drives the positioning shaft to rotate, the ball bearing ascends and descends along the spiral groove of the positioning shaft, then the lifting frame and the sliding block are driven to move, and the vertical rod is driven to horizontally move along the second radial guide groove so as to adapt to flange bodies with different diameters.

This utility model discloses a valve inner wall cleaning device for check valve production and processing, relating to the field of check valve inner wall cleaning technology. It includes a base with four fixed rods fixed to its upper end. The upper ends of the four fixed rods are fixed to the same top plate. A movable plate is located below the top plate, and a rotating tube is vertically inserted through the movable plate. The rotating tube is rotatably connected to the movable plate via bearings. The upper end of the rotating tube penetrates the top plate. Two cleaning mechanisms and four suction ports are located on the side wall of the rotating tube near its upper end. A rotating mechanism connected to the rotating tube is located at the lower end of the movable plate, and a lifting mechanism connected to the movable plate is located at the upper end of the base. This utility model can promptly suck away the dirt after cleaning, effectively improving the cleaning effect of the check valve inner wall while avoiding the problem of dirt affecting the working environment.

This utility model provides a tabletop lift-type laboratory fume hood, relating to the field of laboratory fume hoods. It includes: a cabinet body; an exhaust duct on the upper side of the cabinet body, with an exhaust fan connected to the outer end of the exhaust duct; a filter assembly connected to the outer end of the exhaust fan; a filter box containing filter elements and a partition inside the filter box; a dust collection hood on the inner side of the cabinet body, with a flexible hose connected to its rear side; the lower end of the flexible hose connecting to a rear exhaust port on the rear side of the operating table; an electric actuator connected to the lower end of the operating table; a tabletop on the lower side of the operating table; and a storage box on the lower side of the tabletop. This utility model facilitates height adjustment of the operating table inside the cabinet and enables effective filtration and suction close to the operating table.

The invention discloses a device for cutting and chiseling the position of an embedded part of a heat insulation board, which comprises a base, the tail part of the base is provided with a handle, and the back side of the base is provided with a motor; the cutting saw blade is rotationally arranged on the front side of the machine base; the sliding pipes are vertically arranged on the front side of the machine base and located on the two sides of the cutting saw blade. The sliding rod is vertically and slidably connected to the sliding pipe, and scale marks are arranged on the outer side wall of the sliding rod; the base is horizontally arranged between the pair of sliding rods, and the lower end face of the base is flush with the outer wall of the lower end of the cutting saw blade. According to the device, the base flush with the outer wall of the lower end of the cutting saw blade is arranged, the base abuts against the heat preservation plate, meanwhile, the base can vertically slide, the cutting depth of the cutting saw blade is the same as the sliding distance of the sliding rod, display can be conducted through scale marks, the cutting depth is accurately controlled, and the cutting efficiency is improved. The problems of inaccurate positioning, poor perception and poor subsequent repairing quality in the traditional cutting process are solved, the thermal insulation performance of the outer wall is guaranteed, and the construction cost is reduced.