5results about How to "Reduce dust phenomenon" patented technology

The aggregate screening device for concrete production comprises a material conveying frame, a material screening box and a butt joint clamping seat, the material conveying frame is fixedly installed on the outer surface of one end of the material screening box, the butt joint clamping seat is fixedly installed on the outer surface of the other end of the material screening box, and a screen is movably installed on the inner side of the material screening box; the screening box and the screen are connected and fixed through a vibrating frame, a first rotating rod matched with the screen for use is movably installed on the lower portion of one end of the vibrating frame, a second rotating rod matched with the screen for use is movably installed on the lower portion of the other end of the vibrating frame, and the first rotating rod and the second rotating rod are symmetrically arranged. The vibration frame and the screening box are connected and fixed through a buffer. A material receiving box is mounted on the inner side of the butt joint clamping seat in a splicing manner; when the aggregate screening device for concrete production is used, the retention time during aggregate screening can be flexibly controlled, meanwhile, the size of the screen can be flexibly adjusted, and the aggregate screening effect is improved.

The invention relates to the field of powder drying, in particular to electric smelting zirconium yttrium production drying equipment which comprises a fixing frame, a rotary drum and the like. The fixed frame is rotationally connected with a rotary drum; a plug plate is arranged on the upper side of the drum; a heating pipe is arranged in the rotary drum; a plurality of exhaust ports are formed in the right side of the drum; and a blocking part is arranged on the rotary drum. Compared with an existing mode that a roller or a stirring barrel is used for mixing and drying, double-layer heating is conducted on powder through the heating pipes arranged in the material barrel and the rotating barrel, and the drying efficiency of the powder is improved; secondly, compared with an existing mode that a roller or a stirring barrel is used for mixing and drying, the moving space in the powder mixing process is limited through the area between the rotating barrel and the material barrel, the dust raising condition generated in the powder mixing process is reduced, the surface of the material barrel can be cleaned when the stirring blades of the rotating barrel rotate, powder is prevented from being attached to the surface of the material barrel, and the drying efficiency is improved. The heating effect is influenced.

The utility model discloses a kind of automatic packing equipment of coal powder, it is related to coal powder processing technical field, the utility model includes equipment main body, equipment main body inside is separately provided with feeding assembly, transfer assembly, powder loading assembly, hanger, upper cover assembly, gland assembly and discharging assembly;Transfer assembly includes electric turntable installed in the equipment main body inside below, photoelectric proximity switch installed in the equipment main body inside one side and four ultrasonic sensors installed in the hanger top.The utility model is equipped with powder loading assembly, upper cover assembly and gland assembly, in powder loading assembly, dust brush is attached to the top of coal powder barrel, can reduce dust raising phenomenon in powder loading process, reduce material loss and environmental impact;Weigher is attached to the bottom of coal powder barrel under lifting cylinder drive, through numerical zeroing to remove barrel body self-weight, real-time measurement is carried out to coal powder, can reduce the situation of uneven powder loading amount, guarantee the consistency of the weight of each coal powder;It is convenient for automatic filling, convenient operation.

The invention discloses a coal bed gas particulate matter filtering device, and belongs to the field of coal bed gas, the filtering device comprises a box body, an air inlet pipe arranged at one end of the box body, an air outlet pipe arranged at the other end of the box body and communicated with the air inlet pipe, and a filter screen arranged in the air inlet pipe; a bent pipe communicated with the air inlet pipe and the air outlet pipe is arranged on the box body; the box body is provided with a purging structure used for purging pulverized coal particles adsorbed to the lower end of the filter screen. The blowing structure comprises an air collecting pipe inserted into the bent pipe, an air capturing pipe which is fixedly arranged at one end, close to the air inlet pipe, of the air collecting pipe and is used for capturing gas, a microporous aeration pipe which is arranged on the air inlet pipe and corresponds to the lower end of the filter screen, and connecting pipes which are arranged at two ends of the air collecting pipe and are communicated with the microporous aeration pipe. The pulverized coal particles at the lower end of the filter screen can be purged through the purging structure, the aggregation degree of the pulverized coal particles is reduced, the filtering efficiency is improved, frequent cleaning of the filter screen is reduced, and the service life of the filter screen is prolonged.

The utility model relates to the technical field of building engineering, disclose a multifunctional earthmoving device for building engineering, including the frame, the top fixed coupling of frame has the water tank, the one end of frame swing installation has the fender, one side surface fixed coupling of fender has first shower nozzle, the top fixed coupling of first shower nozzle has the sleeve pipe, one side surface fixed coupling of water tank has the plug -in pipe. The utility model has the advantages and effects that: when the frame is walking, the lowering of the lifting frame makes the bulldozer bucket contact with the ground and push the earth, at this time, the clean water in the water tank enters the sleeve pipe from the plug -in pipe, and then enters the first shower nozzle, and fine mist is sprayed from the atomizing nozzle, the water pipe sends the clean water to the second shower nozzle, improves the water mist spraying range, and the fine water droplets are beneficial to drift, the moderate water volume can evaporate in a relatively short time after being sprayed, and the water mist is limited to inhibiting dust in the air, reducing the dust raising phenomenon, thereby facilitating the continuous construction of the working environment.