Fertilizer impurity screening device

Abstract

The invention discloses a fertilizer impurity screening device, and relates to the technical field of fertilizer production. The fertilizer impurity screening device comprises a screening box, the bottom of the screening box is fixedly installed on the top of a base, a feeding port and a discharging port are formed in the top of the rear side and the bottom of the front side of the screening box separately, a driving motor is fixedly installed on the top of the right side of the base, and an output shaft of the driving motor is fixed to a screening shaft. According to the fertilizer impurity screening device, in the rotating process of the screening shaft and a screening arc plate, an auxiliary wrapping mechanism on the screening arc plate can wrap a fertilizer, when the screening arc plate rotates to be close to a magnetic adsorption layer, the auxiliary wrapping mechanism enables the fertilizer to be separated from the screening arc plate under the magnetic action of a magnetic adsorption layer, the fertilizer flies out under the action of centrifugal force and slightly collides with the magnetic adsorption layer, scrap iron in the fertilizer is adsorbed by the magnetic adsorption layer, so that the scrap iron in the fertilizer is screened out, and the influence of the scrap iron on the fertilizer applying effect is prevented.

Description

Technical field [0001] The present invention relates to a technical field fertilizer production, in particular to a fertilizer impurity screening apparatus. Background technique [0002] Chemical fertilizer, referred to as fertilizer. Containing one or more nutrients required for growth of crops made of chemical fertilizer and (or) physical methods. Also known inorganic fertilizer comprising nitrogen, phosphorus, potassium, fertilizer, compound fertilizer and the like. Which has the following features in common: simple ingredients, a high nutrient content; fast fertilizer, fertilizer Jinmeng; acid-base reaction of certain fertilizers; generally free of organic matter, soil building without effect. There are many types of chemical fertilizers, the nature and administration methods are different. [0003] In the process of fertilizer production machinery, equipment operation process will produce portions of iron, in which iron filings will fall under gravity to the inside of fertil...

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Problems solved by technology

[0003] During the production process of chemical fertilizer machinery, some iron filings will be generated during the operation of the production equipment. These iron filings will fall into the inside of the fertilizer under the action of gravity. When using chemical fertilizers, these iron filings may affect the fertilization effect of chemical fertilizers. The existing method of processing iron filings is usually to directly use a magnet to suck the iron filings out of the fertilizer. However, during the process of taking the magnet out of the fertilizer, the resistance of the fertilizer to the magnet may bring down the iron filings on the surface of the magnet, resulting in The cleaning effect of iron filings is not good, and there are certain defects

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