Spraying equipment type and application range
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Hydraulic sprayer has two basic functions of mixing and conveying. From the working principle, the hydraulic spray sowing planting machinery can be divided into three categories: jet agitation sprayer, mechanical agitation sprayer and pressure-assisted sprayer. The jet agitation sprayer and the mechanical agitation sprayer have the same conveying mode, and the mixing modes are different, and the mechanical structure is quite different. The mixing mode of the mechanical stirring sprayer and the pressure-assisted spraying sprayer is basically the same, but the conveying mode is different, and there is a big difference in the mechanical structure. 1. Jet mixing sprayer The jet mixing sprayer generally uses a tank-type mixing box. The upper and lower two jet tubes spray water to impinge on the slurry in the tank to form a two-dimensional circulation flow to achieve mixing of solids and water. The jet agitation sprayer has a simple structure and a small mixing force, so it needs a long mixing time, and the tank capacity can only be generally less than 2000 liters. Due to the structural limitations of the jet tube, the jet agitation sprayer generally allows only a medium concentration slurry of 7% to 15% solids content to be delivered. This kind of sprayer is generally suitable for small-scale greening projects with a high degree of surface soil maturation and courtyard gardens. 2. Mechanical stirring sprayer The mechanical stirring sprayer generally uses a tank-type mixing tank. A vertical shaft-type slurry stirrer stirs the slurry in the tank to form a two-dimensional or three-dimensional circulation flow to achieve the mixing of solids and water. The high stirring power of the paddle stirrer ensures that the high-concentration slurry with a solids content of 30% to 60% is fully mixed and kept in suspension throughout the spraying process. At the same time, the pump equipped with the mechanical stirring sprayer has the characteristics of low number of blades, wide flow channels, and low rotation speed, which ensures that high-concentration mixed slurry will not be blocked. The hydraulic continuously variable mechanical stirrer has a large adjustment range, and can adjust the direction, speed and force of the stirring at any time according to the concentration of the slurry, the tank capacity, and the degree of mixing, and can adapt to the construction needs of various sprayed and broadcast fiber coverings, and can also spray the peat. , Peat, etc., or artificially formulated growth matrices, whose performance is unmatched by jet agitation and constant-speed mechanical agitation. 3. The pressure-assisted spray jetting machine needs to spray the mixed slurry with a concentration of more than 50% when the bottom soil of the spray painting construction surface is poor in water permeability. The pressure-assisted sprayer is used to inject compressed air into the mixing tank to help mix out the slurry, and at the same time it uses a volumetric peristaltic pump to pump and realize the operation function. From the scope of application, it is also possible to divide spray-sowing planting machinery into small-sized sprayers for urban landscape engineering and professional-type sprayers for ecological restoration. The former is dominated by jet mixing. In the United States, Japan, and Taiwan, there are small-sized sprayers that have a simple structure and are suitable for the construction of courtyard gardens. The latter are mechanically agitated or supercharged, and developed countries are widely used in the field of environmental protection. The United States has strong economic and technological strength, a vast area, and extensive application of spray-casting technology. Therefore, there are many product brands, all specifications, and a wide range of structural types and functions. The tank capacity is 150 to 12,000 liters and the matching power is from 2.6 to 60 kilowatts.