Two-stage rotary screen with firm support and foldable roller

Abstract

The invention relates to a chemical fertilizer production device, and in particular relates to a two-stage rotary screen with a firm support and a foldable roller. The two-stage rotary screen with the firm support and the foldable roller comprises a bracket, a motor, a coupling, a screen shaft, a screen body, supporting frames and the foldable rollers; the motor is arranged on the bracket; two ends of the screen shaft are connected with the bracket through a bearing; the screen body is connected with the screen shaft through the supporting frame; the motor is connected with the screen shaft through the coupling; the screen body comprises a first screen part and a second screen part; the meshes of the first screen part are smaller than those of the second screen part; the supporting frames are arranged every interval of 60 degrees along the screen shaft in the radial shaft and are fixedly connected with the screen shaft by welding; the foldable rollers are arranged at four corners of the bracket and are movably connected with the bracket. The two-stage rotary screen with the firming supporting frame and two types of screens has the advantages that the circumstance that the meshes are blocked can be prevented, the production cost can be saved, and the production efficiency can be greatly increased.

Description

technical field [0001] The present invention relates to a fertilizer production plant, in particular to a two-stage trommel screen with firm support and foldable rollers. Background technique [0002] In the production of compound fertilizers, sorting fertilizer granules is an essential step before packaging finished products. The uniformity of fertilizer granules is an important indicator to measure the quality of fertilizers. Due to the certain viscosity of compound fertilizer granules, existing In the technology, in order to prevent the screen from clogging, the front screen mesh is larger than the rear screen mesh, and the larger particles are preferentially screened out to prevent the blockage of the screen from affecting the work of the rear screen. The particles are sieved together, and the particles sieved out of the front screen need to be re-screened, which reduces the production efficiency. In addition, because the drum sieve works at a fast speed, and the ferti...

AI Technical Summary

Problems solved by technology

[0002] In the production of compound fertilizers, sorting fertilizer granules is an essential step before packaging the finished product. The uniformity of fertilizer granules is a measure of the quality of fertilizers. Because the compound fertilizer particles have a certain viscosity, in the prior art, in order to prevent the screen from clogging, the front screen mesh is larger than the rear screen mesh, and the larger particles are preferentially screened out to prevent the screen from clogging. It affects the work of the rear screen, but often sieves out the particles with a qualified size. It is necessary to re-screen the particles screened out of the front screen, which reduces the production efficiency. In addition, because the drum screen works at a fast speed, and The fertilizer inside is heavy, and the sieve body often has a certain deformation after a period of use, which requires additional corrections to it, which affects normal production and reduces production efficiency. Moreover, most of the rollers have a large mass. When it is necessary to move the roller Screening often requires the joint efforts of multiple people or additional mechanical equipment to move it. There are also mobile rollers installed at the four corners of the trommel screen bracket. However, due to the high speed of the trommel screen when it is working, it is easy to shake and affect the trommel screen. work quality and efficiency, reducing production efficiency

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