SU1743650A1 - Device for separating loose materials - Google Patents

Abstract

Usage: The invention relates to the field of bulk material separation. SUMMARY OF THE INVENTION: material separation on curved surfaces. The device includes a curved chamber, a sieve, a collection of heavy fractions, an adjustable damper. 1 hp f-ly, 1 ill.

Description

The invention relates to agriculture, in particular to machines for the preparation of feed, intended for the separation of dry grass cutting with mineral admixture in the preparation of granulated feed and can also be used in the food industry.

A device for separating a homogeneous material into fractions is known.

A disadvantage of the known device is that it is intended for separation into fractions of a homogeneous material as well. In addition, the flow rate with the material decreases as the channel cross section widens, and the different soaring speed of the material fractions can be set by the value of the shutter covers. You should pay attention to the fact that the majority of butterfly valves are located along the forming small curvature of the device. There is one damper along the generatrix of greater curvature, but it is located in the direction of flow. The valve, directed against the flow, is immediately behind the loading neck and will not fall into the field of centrifugal action.

forces All valves are hinged on one side. When opening any damper, the outside air enters the flow and helps to reduce the flow rate, due to which the release of fractions is enhanced. Centrifugal forces are not involved in this device.

The device that includes the curvilinear air chamber, with a collection of heavy fractions in the lower part of the curvilinear chamber, is the most conspicuous to the proposed one.

A disadvantage of the known device is that along with heavy impurities a part of the material gets into the sorbet collector. Due to the fact that a stagnant zone is formed in the bunker, the particles of the processed material are not transferred from it, but are deposited and accumulated in it, which leads to a loss of material.

The purpose of the invention is to improve the quality of separation of dry grass cutting with a mineral impurity.

This goal is achieved by the fact that in a device for the separation of dry grass cutting with a mineral admixture including a curved air chamber with

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a collection of heavy fractions in its lower part, a rectilinear loading horizontal nozzle and a vertical nozzle for withdrawing light fractions; a flap is made of two plates hinged between each other, which is fixed above the collection of heavy fractions and with a sieve, fixed to the bottom of the chamber with one edge and the other facing the flap, wherein the axis of rotation of the plates is located on the line connecting the bottom edge of the screen to the bottom wall of the chamber.

The drawing shows a device for the separation of dry grass cutting with a mineral admixture.

The device consists of a curvilinear air chamber 1, a removable sieve 2 with a sub-sieve chamber 3, a collection of heavy fractions 4 with a gate 5, an adjustable damper 6.

A device for dividing dry grass cutting works as follows.

The dryness of the cutting grass and the mineral impurities in it are moved by the air flow through the curved air chamber 1. Under the influence of gravitational forces, the mixture particles in a straight horizontal loading pipe are distributed in layers. The heaviest mineral impurities are transferred to the lower layers of the stream. Lighter particles of dry grass are located in the upper layers of the air flow. At the same time, a part of the medium flow is separated by a raised rotary valve 6 and is directed to a collection of heavy fractions 4, where mineral impurities settle, since they have a low coefficient of windage as compared to dry grass cutting. Particles of dry grass cutting, having a large coefficient of windage, bending around the adjustable flap 6, will be carried away to the vertical pipe of the output of light fractions. Mineral impurities with a size of 1 - 2 mm fly with a portion of the flow

medium along the straight horizontal loading nozzle, directed above the rotary damper 6 and under the action of centrifugal forces hit the removable sieve 2 due to low windage, move along the surface into the collection of heavy fractions 4. Under the action of centrifugal forces also passes through the sieve 2, falls into the sieve

chamber 3, from which it moves along the pipe wall to the collection of heavy fractions 4. The air flow around the butterfly valve 6 facilitates the separation of dry grass cutting particles from mineral impurities and their removal to the vertical pipe. The valve can regulate the active cross-section of the input and output flows, depending on the presence of appropriate impurities in the composition

dry grass cutting.

The application of the proposed device improves the quality of separation of dry grass cutting with a mineral admixture.

Claims (2)

1. A device for separating bulk materials, including a curvilinear air chamber with a collection of heavy fractions in its lower part, rectilinear a loading horizontal nozzle and a vertical nozzle of the output of light fractions, characterized in that, in order to improve the quality of separation of dry grass cutting with mineral admixture, it is provided with a flap made in the form of two plates mounted above the collection of heavy fractions and with their edges hinged between by itself, and by the sieve, with one edge fixed on the bottom wall of the chamber, and the other facing the damper. 2. The device according to claim 1, wherein the axis of rotation of the flap plates is located on the line connecting the bottom edge of the sieve to the bottom wall of the chamber. HI HI HI  I YU  I i Yatał