Impurity recovery structure of agricultural screening machine

Abstract

The invention discloses an impurity recovery structure of an agricultural screening machine. A vibration conveyor is arranged on the upper surface of a frame; the vibration conveyor consists of a hopper, a vibration motor, a spiral climbing rail and a conveying rail; a four-way screening box is arranged on the right side of the vibration conveyor; a feed valve, a discharge valve, an air supply valve and an impurity recovery valve are fixedly mounted in the four-way screening box; a flow separation screen is fixedly mounted in the four-way screening box; and the flow separation screen consistsof a funnel and a finish screening box. In the impurity recovery structure of the agricultural screening machine, impurities with larger sizes are naturally precipitated, so that the screening periodis shorter; when part of impurities are accumulated in the flow separation screen, air is blown to remove the impurities; at this time, the feed valve and the discharge valve are closed, and the air supply valve and the impurity recovery valve are opened; and the impurities are influenced by wind power for autonomous discharge, and are not easy to accumulate, so that the internal of the four-way screening box is not easy to block, the screening process is more smooth, and the working efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to an impurity recovery structure of an agricultural sieving machine. Background technique [0002] In most agricultural breeding bases, the breeding feed of poultry needs to be screened manually. This screening is not only inefficient, but also has high labor costs. Few of them use screening equipment for screening. The screening machine is a screening equipment. Widely used in agriculture, chemical industry, light industry, food, building materials and other industries, especially in the feed production and processing industry in the agricultural field, the raw materials for making agricultural feed may need to be sieved by a sieving machine to screen out feed of appropriate size. For animals of different ages, most of the existing sieving machines use vibration devices to vibrate the sieve plate to achieve the purpose of sieving, so the existing sieving machines ge...

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Problems solved by technology

[0003] In order to solve the problems of poor working stability and easy blockage of existing agricultural sieving machines, the purpose of the present invention is to provide an impurity recovery structure for agricultural sieving machines, which not only has the basic characteristics that general agricultural sieving machines can screen seeds, The most prominent is to be able to regularly clean the filter element, improve the filtration accuracy, to solve the problems raised in the above background technology

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