RU2428001C1 - Grain mixture separator - Google Patents

Abstract

FIELD: agriculture. ^ SUBSTANCE: invention refers to agricultural engineering industry. The grain mixture separator comprises a receiving-loading device, a screw and a separating channel. The upper end of the separating channel is connected to a chamber of light admixtures acceptance with a fan installed in its upper part. The injection nozzle of the fan is communicated to the lower part of the separating channel by means of an air supply channel. There is a throttling gate installed in the air supply channel. There is a device of cleaned grain discharge in the lower part of the separating channel. The screw is installed serially in the receiving-loading device, the separating channel and the device of coarse admixtures discharge. On the screw section, which is installed in the separating channel, there are rigidly fixed elements for grain mixture mixing. Under the screw in the separating channel there is a sieve installed coaxially. Below the sieve there is a deflector. ^ EFFECT: separator provides for increased efficiency of grain mixture cleaning. ^ 2 dwg

Description

The invention relates to agricultural machinery, and in particular to devices for cleaning a grain mixture.

Known pneumatic separator containing a receiving and loading device, with a screw installed in it, under which a mesh conveyor, suction and discharge channels are inclined, with a throttle valve located in the middle of the latter, a chamber for receiving light impurities, in which a diametrical fan and discharge screw are installed light impurities (Oknin BS. Machines for post-harvest grain processing [Text] / B.S.Oknin // Textbook for the training of mass professions. - M.: Agropromizdat, 1987 - P.19).

The disadvantage of the described pneumatic separator is the low cleaning efficiency due to the presence of large impurities in the cleaned grain passing through the mesh conveyor cells.

The closest to the proposed invention in terms of technical nature and the achieved result (prototype) is a pneumatic separator containing a loading and receiving device, a screw, a separation channel connected by its upper end to a light impurities receiving chamber with a diametrical fan installed in the upper part, the discharge pipe of which is through an air supply channel communicated with the lower part of the separating channel, in which there is a device for outputting refined grains, and a throttle valve located air supply channel. In this case, the upper part of the separation channel is connected via an air exhaust channel with an inertial louvre separator located in the chamber for receiving light impurities, at the outlet of which a counter-current dust separator is installed. Between the separating and air supply channels there is a channel for partial removal of dusty air, the inlet portion of which is located at the inner surface of the fan in the place of interfacing with the wall of the air supply channel. The channel for the partial removal of dusty air is in communication with the air outlet channel, the separating and air supply channels are divided in width by two partitions. A sluice gate was used as a device for removing purified grain, and a sluice gate for removing light impurities was also installed at the bottom of the chamber for receiving light impurities. The screw is installed in the receiving and loading device (Tarasenko AP Modern machines for post-harvest processing of grain and seeds [Text]: Textbook for universities / AP Tarasenko. - M.: KolosS, 2008. - S.99).

The disadvantage of the described pneumatic separator is the low cleaning efficiency due to the impossibility of separation of large impurities and grain in the separating channel by the air flow created by the diametrical fan by the aerodynamic properties, as well as the difficulty of separating part of light impurities due to the dense flow of the grain mixture into the separation channel, which facilitates capture and removal from separator together with refined grain of a certain part of light impurities.

The present invention solves the problem of increasing the efficiency of cleaning the grain mixture.

To achieve this technical result, in a grain mixture separator containing a loading and receiving device, a screw, a separation channel connected by its upper end to a light impurities receiving chamber with a diametrical fan installed in the upper part, the discharge pipe of which is in communication with the lower part of the separation channel through an air supply channel, in which the throttle is located, the screw is located sequentially in the receiving-loading device, the separating channel and the output device cr solid impurities, while in the area of the screw located in the separating channel, elements for mixing the grain mixture are rigidly fixed, a sieve is coaxially placed under it, and a deflector is installed below.

Improving the efficiency of cleaning the grain mixture from large and small impurities is achieved by the fact that the screw is located sequentially in the receiving and loading device, the separation channel and the device for removing large impurities, while elements for mixing the grain mixture are rigidly fixed on the section of the screw located in the separation channel, a sieve is coaxially placed under it, and a deflector is installed below.

The invention is illustrated by drawings, where figure 1 shows a separator of grain mixture, front view; figure 2 is the same, left view.

In addition, in figures 1 and 2, the arrows show:

The grain mixture separator comprises a loading and receiving device 1, a screw 2, a separation channel 3 connected by its upper end to a light impurity receiving chamber 4 with a diametrical fan 5 installed in the upper part, whose discharge pipe (not shown) is connected to the lower part by means of the air supply channel 6 separating channel 3, in which there is a device 7 output cleaned grain, made, in particular, in the form of a lock gate. The throttle valve 8, designed to control the speed of the air flow, is located in the middle part of the air supply channel 6. The screw 2 is located sequentially in the receiving-loading device 1, the separation channel 3 and the device 9 for the removal of large impurities, while in the area of the screw 2 located in the separation channel 3, elements 10 for mixing the grain mixture are rigidly fixed, a sieve 11 is coaxially placed under it, and a deflector 12 is installed below. The receiving and loading device contains, in particular, a hopper 13, in the lower the first part of which is located feeder 14.

The grain separator works as follows.

The grain mixture from the hopper 13 of the pick-and-place device 1 is fed by means of a feeder 14 to a section of the screw 2 located in the pick-and-place device 1. Next, the grain mixture by the screw 2 is fed into the separation channel 3, in which it moves along the coaxially located sieve 11 and is affected elements 10 and the air flow created by the diametrical fan 5. Elements 10 the grain mixture is thrown up, the distances between the components increase, which leads to an increase in the efficiency of separation of the lungs esey which are picked up by the air flow generated by flow fan 5, and are carried into the chamber 4 receiving light impurities and grain fraction is lowered to a sieve 11, it passes through the hole and into the withdrawal device 7 clean grain. Large impurities in the grain mixture are held up by the sieve 11 and are moved by the screw 2 into the device 9 output large impurities. The air flow rate is controlled by the throttle 8. The deflector 12 directs the air flow coming through the air supply channel 6 from the diametrical fan 5 to the part of the sieve 11, which is more loaded with the grain mixture, located near the outlet of the receiving-loading device 1.

Thus, the use of the invention improves the cleaning efficiency of the grain mixture.

Claims (1)

The grain mixture separator containing the receiving and loading device, a screw, a separation channel connected to the upper end with a light impurities receiving chamber with a diametrical fan installed in the upper part, the discharge pipe of which is connected through the air supply channel to the lower part of the separation channel, in which the cleaned discharge device is located grain, and a throttle valve located in the air supply channel, characterized in that the screw is located sequentially in the receiving and loading device In addition, the separator channel and the device for the removal of large impurities, while elements for mixing the grain mixture are rigidly fixed on the part of the screw located in the separating channel, a sieve is coaxially placed under it, and a deflector is installed below.

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