Compound fertilizer screening device for automatic cleaning

Abstract

The invention discloses a compound fertilizer screening device for automatic cleaning, and relates to a rotary screen cleaning device. The device comprises a stand, a shell, a rotary screen scraping cleaning part and a air blowing cleaning part; the scraping cleaning part comprises a support frame, a scraper and a cleaning brush; two ends of the support frame are slidingly connected to the stand; the scraper is fixed on the support frame; the cleaning brush is contacted with the inner wall of the top of a rotary screen; the air blowing cleaning part comprises an air blower and a cleaning air pipe; the cleaning air pipe is fixed in the shell, and is positioned above the rotary screen; the air blower is connected with the cleaning air pipe; the cleaning air pipe is provided with multiple air blowing holes towards the side wall of the rotary screen; the rotary screen is divided into a screening part and a pushing part through one plane of a central shaft of the rotary screen; multiple pushing plates are fixedly arranged on the inner wall of the pushing part at equal intervals; the scraper is provided with a gap for passing through the pushing plates; and when the rotary screen rotates, the support frame performs a left-right reciprocating motion, so that the interference between the pushing plates and the scraper can be prevented when bonded materials are removed.

Description

technical field [0001] The invention relates to a drum screen cleaning device, in particular to an automatic cleaning compound fertilizer screening device. Background technique [0002] In the field of compound fertilizer production, the trommel screen is a kind of screening equipment with strong screening ability, but during the rotation process of the trommel screen, due to the centrifugal force and the mutual extrusion force between materials, the trommel screen often falls on the inner screen surface of the trommel screen. A layer of compound fertilizer is pasted on it, and the sieve holes are blocked in a short time, which seriously affects the sieving effect. If it is manually cleaned, the trommel screen cannot be fully enclosed, and large dust will be formed during operation, which is not conducive to manual cleaning on site, not to mention that manual cleaning increases the labor load, and the flying of dust leads to poor production environment and increased raw mate...

AI Technical Summary

Problems solved by technology

The device hits the trommel screen with vibrating balls to vibrate the screen mesh of the trommel screen to complete the cleaning. On the one hand, this cleaning method is very easy to damage the trommel screen mesh, and on the other hand, the cleaning effect is not good because the vibration should not be too large

[0004] In addition, there is also a device that automatically cleans the trommel screen through the brush. The main structure is to fix the brush and stick it to the side wall of the trommel. When the trommel rolls, it can be cleaned; The effect is still not good

Because there are spiral blades in the trommel screen, the purpose of material feeding can be achieved while the trommel screen is rolling, so that the materials can be screened on different levels of screens; therefore, if a brush is installed inside the trommel screen, the spiral blades will squeeze Press the brush, making the brush extremely easy to damage

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