4results about How to "Prevent powdering" patented technology

The utility model provides a sprayed powder recycling device, belongs to the technical field of automobile coating, and aims at solving the problem that the powder recycling operation of an existing recycling device is tedious. Comprising a powder spraying room body, a supporting frame, a storage body, a powder suction fan, a powder suction pipeline, a filtering shield, a powder suction mechanism and a suction filtering mechanism. The supporting frame is located on the front end face of the powder spraying room body. The storage body is located on the left side of the supporting frame. The powder suction fan is fixedly connected to the upper end face of the supporting frame. The left side of the powder suction pipeline is fixedly connected to a lower side air opening of the powder suction fan. The filtering protective cover is fixedly connected to the interior of the powder spraying room main body, and the filtering protective cover is fixedly connected with the powder suction pipeline; the powder absorbing mechanism is arranged in the powder spraying room main body; and the powder absorbing mechanism is adopted, so that workers can conveniently and uniformly recycle the recycled powder, and the absorbing and filtering mechanism is adopted, so that the service life of the recycling device is prolonged.

The invention relates to the technical field of agricultural chemistry, and provides a preparation method and application of a compound water-soluble fertilizer.The preparation method of the compound water-soluble fertilizer.The preparation method comprises the following steps that S1, nutrient elements and a flexibilizer are mixed and then smashed, and a wrapping agent is obtained; s2, dissolving polyvinyl alcohol in water to obtain a polyvinyl alcohol aqueous solution; dissolving borax in water to obtain a borax aqueous solution, and adding a disintegrating agent into the borax aqueous solution to obtain a composite solution; s3, after the polyvinyl alcohol aqueous solution is sprayed on urea, a wrapping agent is added, finally, the composite solution is sprayed, and the composite water-soluble fertilizer is obtained after drying. Through the technical scheme, the problems of easy powder removal and low utilization rate of the compound fertilizer in related technologies are solved.

This invention discloses a high-friction, low-thermal-conductivity prestressed concrete pipe pile processing device, belonging to the field of concrete pipe pile processing technology. The device includes a mold, a drive unit, and a connecting shaft. It also includes a mixing mechanism comprising a mixing paddle and a telescopic mechanism. The telescopic mechanism drives the mixing paddle to move radially along the mold, and the mixing paddle mixes the concrete raw materials inside the reinforcing cage. A moisture content meter detects the real-time moisture content of the concrete raw materials. When the real-time moisture content is less than a threshold value, the controller controls the telescopic mechanism to contract, so that the distance from the sidewall of the mixing paddle to the axis of the connecting shaft is equal to the designed inner diameter of the pre-processed pipe pile, and the length direction of the mixing paddle is parallel to the axial direction of the mold. This high-friction, low-thermal-conductivity prestressed concrete pipe pile processing device can suppress the segregation of fly ash hollow microspheres, avoid powder shedding from the inner wall, and increase the friction of the processed pipe pile.

The utility model relates to the field of buildings, in particular to a multifunctional heat shielding coating structure. Comprising a base layer, an anti-crack coarse mortar layer, a first primer layer, an aerogel heat insulation floating coat, an aerogel primer layer and a heat reflection heat insulation coating layer which are sequentially arranged from inside to outside. The utility model provides a multifunctional heat shielding coating structure which can reduce the cracking and falling risks of a coating and improve the heat insulation performance.