Two-stage drum screen with protecting cover and dust absorbing device

Abstract

The invention relates to chemical fertilizer production equipment, and in particular relates to a two-stage drum screen with a protecting cover and a dust absorbing device. The two-stage drum screen with the protecting cover and the dust absorbing device comprises a bracket, a motor, a coupling, a screen shaft, a supporting frame, the protecting cover and the dust absorbing device; 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 cloth part and a second screen cloth part; the meshes of the first screen cloth part are smaller than those of the second screen cloth part; one side of the protecting cover is fixedly connected with the bracket, and while the other side of the protecting cover is detachably connected with the bracket; the dust absorbing cover and a waste opening are arranged in the same direction. With the adoption of the two-stage drum screen with the protecting cover and the dust absorbing device, the working quality and efficiency can be increased, and the use safety is improved.

Description

technical field [0001] The invention relates to a fertilizer production equipment, in particular to a two-stage drum screen with a protective cover and a dust suction device. 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, due to the high speed of the drum sieve, it is i...

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. Affects the work of the rear screen, but often sieves out the particles with a qualified size, and needs to re-screen the particles screened out of the front screen, which reduces the production efficiency; in addition, due to the high speed of the drum screen, it is inevitable Larger dust will be produced, and most of the dust contains chemical components. Working in this environment in the long run will inevitably pose a strong threat to the health of operators

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