SU1192864A2 - Pneumatic classifier for separating loose materials - Google Patents

Abstract

PNEUMATIC CLASSIF ICATOP FOR SEPARATION OF BULK MATERIALS by author. St. No. 1045954, characterized in that, in order to make the classification clearer, it is provided with a gas-tight plate, positioned by a feeder and an initial part of the working upper branch of the tape with overlapping part of the latter and mounted for movement in the material feed direction by the feeder. (P l 00 d) 4

Description

.one

The invention relates to the technique of separating bulk materials, can be used in agriculture to classify grain, as well as to solve selection problems in the allocation of highly productive, resistant to seed disease of individual lines, and is an improvement of the invention on the main author. No. 1045954.

The purpose of the invention is to clarify the classification.

FIG. 1 shows a pneumatic classifier for separating bulk materials, a general view; On the fit. 2 is a section A-A in FIG. FIG. 3 is a view of B in FIG.

The pneumatic classifier for separating bulk materials contains a hopper 1 installed under one of the ends of the perforated surface of the feeder 2. The other end of the feeder 2 is located under the upper Ebtvy endless perforated Tape 3. Between the feeder 2 and the outer section of the upper branch of the tape 3 is located. mounted on the frame of the classifier with the ability to move in the plane of supply of the initial mixture by the feeder 2.

Plate 4 is located above the chute at a level that allows the initial mixture to move freely under the upper branch of the belt 3. The endless belt 3. with holes is mounted on the rotating pulleys. A suction duct 5 is provided above the tape, equipped with a device for controlling the speed of the air flow along the tape, made, for example, in the form of a diverging flap towards the feed of the material to the initial part of the channel, which provides a post 9286 .4X

Foam decreases the flow rate along the course of the material sucked to the tape.

Between the branches of the tape there are 5 receivers of 6 fractions with tray stitches 7 and partitions 8. The surface of the slope 7 is made breathable to reduce the resistance to movement of the pneumatic flow. The flue duct 5 in the upper part is connected via an elastic pipe 9 to a fan, at the outlet of which a gate is installed to control the total air flow through the pneumatic channel (not shown).

Classifier works as follows.

The initial grain mixture from the hopper 1 is fed to the feeder 2, which is mixed to the upper branch of the endless belt 3. Setting the plate 4 to a certain position, sucking the seed from the feeder and moving them with the help of tape 3 under the channel is carried out along the longitudinal axis of the duct five.

For any particle, there comes a time when the air flow rate under a certain channel will be less than the feed speed of the particle and it will be released into the corresponding fraction receiver. Submission for a specific zone of the channel allows for the same impact of the existing flow rates established along the line of movement of the particles under the channels. This excludes the influence of any differences in local velocities over the cross section of the channel, and hence the difference in the dependences of their variation along the length of the tape. All this leads to the fact that seeds with the same aerodynamic properties, having a direct connection with the biological properties of the seeds, are placed in the same receivers.

Claims (1)

PNEUMATIC CLASSIFIER FOR SEPARATION OF BULK MATERIALS by ed. St. No. 1045954, characterized in that, in order to improve the clarity of the classification, it is equipped with a gas-tight plate located between the feeder and the initial section of the working upper branch of the tape with overlapping part of the last and installed with the possibility of movement in the direction of material feed by the feeder. SU „, .1192864> 119286.4