3results about How to "Stable ventilation" patented technology

This utility model discloses an acetone adsorption and recovery device, relating to the field of acetone adsorption and recovery technology. The utility model includes a base plate, with a recovery box fixedly connected to the top of the base plate; a particulate filter assembly is installed on the top of the recovery box, the particulate filter assembly including a vertical pipe connected to the top of the recovery box, a first gear movably connected to the top of the vertical pipe, a fixed pipe movably connected to the top of the first gear, and a filter cylinder fixed inside the fixed pipe; a rotating spray assembly is installed inside the recovery box, the rotating spray assembly including a fixed cylinder fixedly connected to the bottom of the recovery box. This utility model, through the filter cylinder and cleaning brush in the particulate filter assembly, can effectively remove particulate impurities from the exhaust gas, preventing them from occupying adsorption sites, thereby improving the adsorption efficiency of acetone. The design of the rotating spray assembly allows the diverter plate and connecting frame to rotate, achieving uniform spraying, enhancing gas-liquid contact efficiency, and further improving the acetone recovery rate.

The utility model discloses a heat dissipation cooling system for a high-temperature mine, which comprises a front-end refrigeration unit, a middle-section refrigeration unit, an air supply pipe, a plurality of groups of cooling units, a liquid supply pipe and a circulating pipe, the front-end refrigeration unit is arranged on the ground surface, the middle-section refrigeration unit is arranged on the middle-rear section of the mine, and the liquid supply pipe is arranged in the middle-rear section of the mine. The cooling units are arranged in mining areas of the rear section of a mine and attached to the inner wall of the mine, the front-end refrigeration unit is sequentially connected with the middle-section refrigeration unit and the cooling units through air supply pipes, and the middle-section refrigeration unit is further connected with a cold source through a liquid supply pipe and a circulating pipe. The device is compact in layout in a mine, small in occupied area, stable in ventilation and high in air quality, the air temperature in the mine is always kept below 30 DEG C, the problem of heat damage can be effectively solved, the production operation environment is improved, and the occupational health of underground mine operation personnel is guaranteed.

The utility model relates to the technical field of transportation unmanned aerial vehicles, and discloses a cargo grabbing device for an unmanned aerial vehicle, which comprises a mounting plate, a mounting assembly is arranged at the bottom of the mounting plate, the mounting assembly comprises a mounting box and a mounting block, a grabbing assembly is arranged at the bottom of the mounting box, and the grabbing assembly comprises an adjusting box. The grabbing assembly is arranged, the distance between a supporting plate and a limiting plate can be adjusted by controlling a second electric push rod to stretch out and draw back, adjustment can be conveniently conducted according to the height of a container, the position of an extending plate can be adjusted by controlling a third electric push rod to stretch out and draw back, and adjustment can be conveniently conducted according to the width of the container; by controlling forward rotation and reverse rotation of a stepping motor, the distance between the two supporting plates can be conveniently adjusted, adjustment can be conveniently conducted according to the length of a cargo box, therefore, the cargo boxes of different sizes can be conveniently grabbed, adjustment and use are convenient, by arranging an installation assembly, the grabbing assembly can be conveniently installed and disassembled, and maintenance is convenient.