What problems should be paid attention to in the design of inclined screw conveyor

2014-09-16 09:31:22 Screw conveyors are widely used in various industries, such as building materials, chemical industry, electric power, metallurgy, coal coal, grain and other industries, suitable for horizontal or inclined conveying powder, granular and small lump materials , Such as coal mine, ash, slag, cement, grain, etc., the material temperature is less than 200 ℃. Screw conveyors are not suitable for conveying materials that are perishable, viscous, and easily agglomerated. In the concrete mixing plant, the role of the screw conveyor has been greatly embodied. 　　 As the inclined screw conveyor is widely used in boiler cleaning and slag removal, the rationality and scientificity of the body structure design is very important. . Based on many years of manufacturing experience, the machine gives a brief description of the structure of the inclined screw loading conveyor and the design of the main components. 1. Introduction to the main components of the machine body: As long as the operation of the inclined screw loading conveyor is driven by the driving device, the cinder enters the chute through the ash hopper. With the rotation of the screw blade shaft, the screw blade is driven to make the cinder rise in the direction of the inclined shaft. The cinder outlet above the trough is discharged.　　2. The design of spiral blades: most of the spiral blades are stamped from thin steel plates with a thickness of 4-8mm, and then welded to the shaft of the rotary shaft, and welded to each other. For conveying abrasive and viscous ash slag, the spiral surface is rolled from flat steel or cast iron. The spiral blade is generally made into a standard form, that is, the generatrix of the spiral surface is a straight line perpendicular to the spiral axis. For the slagging of boilers, steel plates for full-blade blades are generally used.　　3. The choice of spiral blades: the spiral shaft can be solid or tubular, the weight of the tubular shaft is much smaller under the same strength, and the mutual connection is more convenient. In the case of a tubular shaft, the segments are connected by insert bushes fixed by penetrating screws and round shaft segments, and these round shafts are used for the necks of the intermediate bearing and the end bearing. Stainless steel shafts can be used when transporting corrosive or contaminated materials. 4. Dust-proof seals on the first and both ends of the shaft: In the design of screw conveyors, it is often required to set up dust-proof seals on the head and tail of the shaft. The seal pressure difference and the tank end seal are used to prevent the tank from being in the tank. The dust or dust enters the bearing and prevents moisture from entering the groove along the shaft. The sealing seat at the end of the spiral groove body is made of gray iron.　　5. Filling factor selection: The filling factor is an important parameter to determine the cross-sectional area of u200bu200bthe material layer. In the trough, the filling factor of the material affects the transportation process and energy consumption.
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