Two-stage rotary screen with dust collector and firm supporting frame

Abstract

The invention relates to a chemical fertilizer production device, and in particular relates to a two-stage rotary screen with a dust collector and a firm supporting frame. The two-stage rotary screen with the dust collector and the firm supporting frame comprises a bracket, a motor, a coupling, a screen shaft, a screen body, supporting frames and the dust collector; 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 dust collector is arranged in the same direction as a waste opening; 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 two-stage rotary screen with the dust collector and the firm supporting frame has the advantages that the circumstance that the meshes are blocked can be prevented, operators can be protected well, and thus the safety and flexibility in use of the rotary screen can be improved.

Description

technical field [0001] The invention relates to a fertilizer production equipment, in particular to a two-stage drum screen with a dust suction device and a firm support frame. 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. Particles are screened out together, and the particles screened out by the front screen need to be screened again, which reduces the production efficiency. In addition, it is well known that the main components of c...

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 screen mesh in the front section is larger than the screen mesh in the rear section, 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 that are qualified in size. It is necessary to re-screen the particles screened out of the front screen, which reduces the production efficiency. In addition, it is well known that the main components of compound fertilizers are nitrogen and phosphorus. , Potassium and other chemical components, due to the high rotational speed of the drum screen, it is inevitable that large dust will be generated, and most of the dust contains chemical components. If things go on like this, working in this environment is bound to have adverse effects on the health of operators. Moreover, because the rotating speed of the trommel screen is very fast, and the fertilizer inside is heavy, the screen body often has a certain deformation after a period of use, which requires additional corrections to affect normal production. Therefore, it is of great significance to provide a two-stage trommel screen with a dust suction device and a firm support frame.

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