5results about How to "Achieve dust reduction" patented technology

The invention is applicable to the technical field of road construction, and provides a digging and filling method for highway subgrade construction, which comprises the following steps: T1, carrying out construction operation according to a construction drawing, digging a pavement through a digging machine to form a groove, and piling dug soil on the ground on two sides of the groove; t2, the grooves are evenly filled with filling materials such as stone, coal cinder and gravel; t3, the road roller is controlled to slowly move along the foundation pit, a soil returning device at the front end of the road roller is used for backfilling soil on the two sides of the foundation pit, and a compaction steel wheel at the rear end of the road roller is used for compacting the backfilled groove; the soil returning device comprises a fixing assembly and a backfilling assembly arranged on the fixing assembly in a sliding mode. According to the method, the rotating shaft is controlled to rotate to drive the two sets of spiral conveying blades with opposite spiral directions to synchronously rotate, most of soil on the two sides of the groove is conveyed into the groove, the two sets of bulldozing plates are driven to push the residual coating into the groove through linkage of all the parts, and the backfilling efficiency is improved.

The utility model relates to the field of particle cleaning dust removal, in particular to a full-automatic synchronous particle cleaning dust remover which comprises a box body, filtering air inlets are formed in the front side and the rear side of the box body, a water spraying mechanism is arranged on the left side of the box body, a maintenance door is arranged on the right side of the box body, and a filtering mechanism is arranged on the lower portion in the box body. The filtering mechanism comprises a particle filtering cavity and a dust filtering cavity, an air outlet cavity is formed in the upper portion of the interior of the box body, a fan mechanism is arranged in the air outlet cavity, filtering air inlets are formed in the box body to enter the particle filtering cavity and the dust filtering cavity, and compared with a traditional single filter element, the design can optimally treat different types of pollutants; meanwhile, clean water is converted into water mist through the water spraying mechanism, and the dust falling and cleaning effects are achieved.

This invention relates to the field of thin stone processing technology and discloses a high-efficiency cutting device for thin stone processing, including a processing frame. A cutting mechanism is provided on the top of the processing frame, and a fixing mechanism is provided on the top of the cutting mechanism. A recycling frame is fixedly connected to the top inner side of the processing frame, and a drainage frame is fixedly connected to the right side of the recycling frame. A cooling mechanism is provided inside the recycling frame. The cutting mechanism includes a cutting component and a water spraying component. The cutting component is located on the top of the processing frame, and the water spraying component is located on top of the cutting component. In use, when it is necessary to cut thin stone, the part to be cut is first placed on the top of the placement frame. The placement frame is located at the bottom of the cutting disc and does not overlap with the position of the cutting disc. Multiple sets of cutting discs are symmetrically distributed around the rotating shaft, which can realize multi-pass synchronous cutting of stone, greatly reducing the number of cuttings and improving processing efficiency.

The utility model discloses a refractory castable raw material crushing and dust collecting device which comprises a crushing box and a conveying box, a feeding nozzle is arranged on the top face of the crushing box, and the bottom of the crushing box is communicated with the conveying box. According to the dust collection device, the dust collection fan installed in the dust collection box is started, the air suction opening of the dust collection fan sucks air in the dust collection cavity through the filter cover, the dust collection cavity in the negative pressure state sucks dust at the position of the feeding nozzle through the dust collection pipe and the dust collection cover, and the dust in the feeding nozzle is discharged through the dust collection pipe when the dust collection fan is in the continuous working state. Dust in the crushing stage of the crushing box is collected, on the basis, water is pressurized and pumped into the spraying pipe, the water is promoted to enter the dispersing shell in a water mist mode through the multiple atomization nozzles on the spraying pipe, and then the water mist is evenly diffused to the surface of the conveying belt through the multiple round holes in the bottom face of the dispersing shell; compared with the prior art, dust collection at the feeding end of the castable and dust reduction at the discharging end of the castable are achieved.