SU1431872A1 - Arrangement for washing lump materials - Google Patents

Abstract

The invention improves the quality of washing bulk materials, such as plastics waste, due to the connection of the pre-flush bath 17 and the washing chamber 13 by means of a hollow cylinder 2, which includes the end of the feeder screw I, as well as making the lower part of the washing rotor of the washing chamber the cone 4. The materials to be cleaned by the screw 1 are fed through the bath 12 into the washing chamber. When moving through the cylinder 2, they are sealed, preventing the passage of contaminated liquid from the bath 17 into the lower conical part 3 of the washing chamber. The lump material in the lower part of the washing chamber is twisted by blades 22 and blades 7 on the conical part 4 of the drum 6, which promotes the separation of contaminants, and then blades 7 on the cylindrical part of the drum 6 is fed to the outlet nozzle 12, incidentally cleaned with liquid supplied by nozzles 8. 5 z. P. f-ly, 1 ill. I (Lgo 4: 00 00 yo

Description

The invention relates to washing and can be used, for example, for washing waste plastics.

The purpose of the invention is to improve the quality of washing.

The drawing shows the device, a longitudinal section.

A device for washing bulk materials contains a loading opening A,; screw feeder 1, hollow cylinder 2, washing chamber, the lower part of which is made in the form of a cone 3, the rotor, the lower part of which is made in the form of a cone 4.

The upper part of the chamber is made in the form of an E-vertical cylinder 5, and the upper part of the rotor is in the form of a drum 6. The blades 7 are made on the surface of the rotor. In the upper part of the chamber, sprayers | 8 of washing liquid are installed. The device also contains an electric motor 9, a V-belt 1 transmission 10, blades 11 unloading

I fan, outlet 12, spray gun 13 for supplying flushing fluid fTH, gearbox 14, V-belt drive 15, Electric motor 16, pre-flushing bath 17 with a bottom in the form of a cone 18, I sludge discharge pipe 19, BEARING unit 20, shaft 21, blades 22. A hollow cylinder | 2 serves to connect the exit of the bath 17 to the entrance to the washing chamber. It includes the end of the screw 1.

; The operation of the device for washing lump: materials is considered on the example of cleaning waste polymeric materials.

Waste is fed through the boot from-: version A to a motor driven by an electric motor 16 via a V-belt drive 15 and a gearbox 14 auger-feeder 1, which transports them to the bottom of the washing cell. The waste is exposed to pressurized jets of flushing fluid from the nozzles 13, which are mounted at an angle of 45-90 ° to the axis of the auger feeder 1. Installing nozzles at an angle of more than 90 ° makes it difficult to transport the waste to the washing chamber, and installing them under an angle of less than 45 ° facilitates contamination. When combined, the impact of the turns of the auger auger 1 and the jets of flushing fluid supplied to the material at the specified angles causes the waste of polymeric materials to be flooded, and the most severe contaminants such as large stones, rubble, nails, etc. it is deposited in the bath 17 on its conical bottom 18, from where it is discharged through the nozzle 19 of the schlama outlet. The waste of polymeric materials is fed by the screw feeder 1 into the hollow cylinder 2, in which they are compacted, thereby preventing the passage of highly contaminated washing liquid from the bath 17 to the washing chamber. In the conical part 3 of the washing chamber, waste of polymeric materials together with the washing liquid of the blade 7 on the cone, 4 blades 22 are thrown against the wall and twisted. The contaminants, which have a higher density than polymeric materials, under the action of the centrifugal forces accumulate on the wall of the cone 3, slide down and out of it through the discharge outlet pipe 19. The discharge of the sludge is carried out continuously or periodically, by gravity or with special equipment.

The waste released from the contamination rises upward under the action of the blades. 7 of the cylindrical drum 6 and washed with liquid from the nozzles 8 supplied by the countercurrent. Then the waste materials under the action of the blades 7 are dewatered in the cylindrical part 5 of the washing chamber above the nozzles 8. The washed and dehydrated waste by the fan blades 11 of the fan is discharged through the opening 12. Shaft 21

mounted in bearing assemblies 20 and driven from electric motor 9 via a V-belt transmission 10.

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Claims (6)

1. A device for washing lumpy materials, mainly polymeric wastes, containing a pre-rinse bath with an outlet, a feeder, a means of intensifying rinsing, a vertical cylindrical washing chamber with an inlet associated with the outlet of the bath, and outlet openings located respectively in its lower and upper parts, placed in the chamber coaxially with the rotor with guides for moving the material to be cleaned, i-outlet and nozzles for supplying the washing liquid The lower part of the rotor is located at the level of the inlet, characterized in that, in order to increase the quality of the wash, the lower part of the rotor is made in the form of a cone with vanes placed on its surface, and the outlet of the bath is connected to the inlet the chamber through the hollow cylinder under the diameter of the auger-feeder, in which the end of the screw is positioned. 2. The device according to claim 1, wherein the rotor is provided with radial blades located under the cone. 3. The device according to claim 1, characterized in that the lower part of the cylindrical chamber is made conical. 4. The device according to claim 1, characterized in that the bottom of the bath is made conical. 5. The device according to claim 1, characterized in that the means for intensifying the pre-rinsing is made in the form of spaced dispensers over the bath. 6. The device according to claim 5, characterized in that the nozzles are directed at an angle of 45-90 ° to the axis of the auger-feeder.