SU1006337A1 - Thrower for loose materials - Google Patents

Abstract

METAL OF BULK MATERIALS, including a drum with containers, covered by an endless belt, supported by the driving and driven drums, a hopper with a valve and a feeder, and an actuator, characterized in that, in order to improve the quality of materials cleaning during their throwing and simplify the design, the drum capacity The cross-section is made in the form of cells, the front wall of each of which is inclined at an angle of 30-60 ° C. to the surface of the tape at the point of contact.

Description

The invention relates to grain cleaning machines, namely, grain throwers, widely used in agriculture for loading, unloading and cleaning grain at currents and in storage rooms.

The earth-throwing machine is known, it turns on, and the drum with containers, covered by an endless belt, supports it on the drums, and the drive 1.

The lack of a working body of this machine is that it does not provide high quality of the transported material.

Closest to the proposed description is a bulk materials thrower, including a drum with containers, covered by an endless belt, supported by the driving and driven drums, a hopper with a valve and a feeder, and an actuator 2.

A disadvantage of the known metatel is that part of the grain does not have time to go through the through holes of the drum, in which the speed reaches 300-600 rpm, i.e. does not reach the surface of the tape and therefore there is a large scatter of the ejected material. As a result, the full grain enters the waste and, thus, the quality of cleaning the grain mixture is reduced.

The aim of the invention is to improve the quality of cleaning materials when throwing them and simplify the design.

The goal is achieved by the fact that in the bulk materials trowel, including a drum with containers, covered by an endless belt supported on the leading and driven drums, a hopper with a valve and a feeder and a drive, the drum capacities in cross section are made in the form of wedges, the front wall of each of which is tilted at an angle of 30-60 ° to the surface of the tape at the point of contact.

FIG. 1 is a side view of the thrower (section A-A in FIG. 2); in fig. 2 - thrower without a cap, top view; in fig. 3 shows a section BB in FIG. 2; in fig. 4 - drum with tanks.

The thrower consists of a lead 1 and slave 2 drums, covered by an endless belt 3, a drum 4 with containers, a hopper 5 with an adjustable valve 6. The belt receives movement from the electric motor 7 through a V-belt transmission 8. The thrower is equipped with moving wheels 9, serving

to move it, and a screw mechanism consisting of a support screw 10 with a stop nut 11, designed to adjust the inclination of the masking to the horizon.

The drum 4 is mounted on a cantilever shaft 12 mounted in a support bearing 13 mounted on the frame 14.

The drum 4 consists of two end disks 15, between which wedge-shaped blades 16 are mounted, fixed to the disks by means of screws 17. These blades with their front wall are inclined to the surface of the tape at an angle of 30-60 ° and contribute to the preliminary separation of the granular material in the drum itself prior to release.

Thrower works as follows. The granular material to be cleaned is fed by gravity from the hopper 5 to the drum 4, where it is caught by the blades 16

0 and stacked on the belt 3 as it moves. The amount of granular material fed into the drum can be adjusted by the valve 6. Then, when the driving drum 1 is bent around the tape 3, portions of the granular material are ejected to the horizon below

angle equal to the angle of inclination of the tape. In flight, these portions are divided into separate fractions by aerodynamic properties: seeds, as the heaviest particles fly farthest, and light impurities fall closer. Thus, the grain is cleaned from light impurities when it is thrown away by the thrower. In portions of the granular material selected by the blade, when the drum 4 is rotated, it is preliminary divided into fractions due to centrifugal force. Heavy particles (seeds) are located in the lower part of the portion, and light particles are placed in the upper part. Thus, pre-divided portions are better divided into fractions in flight.

Inclined paddles assist:) t rapid sedimentation of a portion of grain on the tape. Therefore, the entire chunk manages to rest on the tape and when throwing it, it turns out to be a compact jet and no scatter is observed. As a result, the cleaning efficiency is improved.

The table presents the test results of the proposed metatel at different angles of inclination of the blades.

Blade angle

to tape, grad153045

Cleaning efficiency,% 8295.1 9693,285.1

60

75

As can be seen from the table, the highest efficiency of grain cleaning from impurities is achieved at blade angles of inclination to the belt in the range from 30 to 60 °, while the known thrower provides a cleaning efficiency of 82%.

Using the proposed metatel will improve the quality of cleaning and reduce the loss of valuable grain to waste, as well as simplify the design of the drum, it does not need transverse discs, blades located at an angle of 30-60 ° to the tape surface, provide a preliminary separation of the granular material in the drum before the release, which contributes to a more efficient division of material in flight.

Claims (1)

THROWER OF BULK MATERIALS, including a drum with containers covered by an endless belt resting on the driving and driven drums, a loading hopper with a valve and a feeder and a drive, characterized in that in order to improve the quality of cleaning materials when throwing and simplify the design, drum capacity in the cross section is made in the form of wedges, the front wall of each of which is inclined at an angle of 30-60 ° to the surface of the tape at the point of contact.