4results about How to "Improve powder selection efficiency" patented technology

The utility model provides a kind of efficient powder concentrator, it is related to powder concentrator technical field, it includes shell, at least one upper air inlet and at least one lower air inlet are circumferentially provided on the outer wall surface of shell;Airflow guide vane assembly, it is located inside shell and extends to the boundary of shell upper portion and shell lower portion, for the airflow from upper air inlet and / or lower air inlet is guided into rotating airflow;Rotor vane assembly, it is located inside shell and is located inside airflow guide vane assembly, for guiding part powder flow turns to air outlet;Rotor vane assembly and the airflow guide vane assembly between form with the powder selection channel that is connected with feed inlet and discharge port, and in the rotor upper portion is provided with a secondary distribution plate in primary distribution plate middle portion.Setting secondary distribution plate in the utility model compared with prior art, powder can make powder in powder selection path stay longer, to ultimately improve the efficiency of powder selection.

The application discloses a vertical roller mill and a machine-made sand production system, and relates to grinding equipment technology. The roller mill comprises a grinding part, wherein a grinding disc and a grinding roller constitute part of the grinding part. The roller mill comprises a pre-milling part and an adaptive material blocking adjusting part. The pre-milling part is composed of a feeding center shaft and milling units, and the feeding center shaft is located above the grinding disc. The N milling units are uniformly distributed around the feeding center shaft, and the pre-milling part of the milling units is in contact with the grinding end face of the grinding disc. The adaptive material blocking adjusting part comprises a rocker seal frame, a material blocking device and a linkage assembly. The rocker seal frame serves as a grinding roller support and is installed on the roller mill rack. The material blocking device comprises a fixed material blocking device and a sliding material blocking device combined with the fixed material blocking device through vertical movement, and the two devices jointly form a surrounding blocking structure. The linkage assembly connects the rocker seal frame and the sliding material blocking device, so that the rocker seal frame drives the sliding material blocking device to move upwards through the linkage assembly. Through the technical innovations, the performance of the vertical roller mill is comprehensively improved.

The utility model discloses a V-shaped powder concentrator wind and material distribution structure which comprises a material distribution box and an air inlet pipe, the air inlet pipe is arranged in the center of the top end of the material distribution box, powder outlet pipes are arranged at the positions, on the two sides of the air inlet pipe, of the top end of the material distribution box, and a supporting plate is arranged in the center of the interior of the material distribution box. A plurality of sets of scattering plates are arranged on the two sides of the supporting plate at equal intervals, movable shafts are arranged at the ends, close to the supporting plate, of the scattering plates, the scattering plates are movably connected with the supporting plate through the movable shafts, and a plurality of sets of triangular open holes are formed in the surfaces of the scattering plates at equal intervals; the triangular holes in every two adjacent groups of scattering plates are designed in a staggered manner, angle iron stop blocks are arranged on the surfaces of the scattering plates on one sides of the triangular holes, and grooves of the angle iron stop blocks face the triangles. According to the material distributing and powder selecting device, a multi-stream three-dimensional material curtain is achieved, material powder can be evenly selected conveniently, and the material distributing and powder selecting efficiency is improved.

This invention relates to a high-efficiency powder classifier, comprising a housing with a feed inlet and a powder outlet. A blower plate and an agitator are installed inside the housing. The blower plate is installed at the bottom of the housing, and the agitator is located above the blower plate, used to agitate the dust accumulated on the blower plate through friction. By agitating the dust material piled on the blower plate, large-mesh dust particles are re-floated by the airflow from the blower plate, improving powder classification efficiency and ensuring more thorough one-time powder classification. This effectively reduces the proportion of large-mesh dust in the discharged powder. Simultaneously, the agitator increases the friction between itself and the dust material, effectively grinding large dust particles. The agitator also disturbs the dust material, maintaining the flow of dust even when the blower plate is operating at low power.