Sedimentation device for separating a material mix and method for removing sediment from a sedimentation device

Patent metadata

Field	Value
Publication number	US-9643108-B2
Application number	US-201414272132-A
Country	US
Kind code	B2
Filing date	May 7, 2014
Priority date	May 21, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A sedimentation device for separating a material mix, preferably plastic flakes, including a sedimentation basin configured to receive the material mix and a liquid, for example water; an inlet configured to introduce the material mix and/or the liquid into the sedimentation basin; an outlet configured to remove sediment from the sedimentation basin; at least one stilling plate within the sedimentation basin configured as an ultrasonic oscillating element. The invention moreover relates to a method for removing sediment from a sedimentation device.

First claim

The invention claimed is:

1. A sedimentation device for separating a material mix, comprising:
a sedimentation basin configured to receive the material mix and a liquid,
an inlet configured to introduce the material mix and/or the liquid into the sedimentation basin,
an outlet configured to remove sediment from the sedimentation basin,
at least one stilling plate within the sedimentation basin, and
the at least one stilling plate configured as an ultrasonic oscillating element for supporting sedimentation and for reducing another swirling of sediment in the sedimentation basin when the sediment is being removed through the outlet.

2. The sedimentation device according to claim 1 , and an admission configured to introduce the liquid into the sedimentation basin.

3. The sedimentation device according to claim 1 , and a bottom of the sedimentation basin has a funnel-shape.

4. The sedimentation device according to claim 3 , and the outlet comprises a double gate.

5. The sedimentation device according to claim 3 , and the outlet comprises a worm.

6. The sedimentation device according to claim 1 , and a sand inlet.

7. The sedimentation device according to claim 6 , and a bottom of the sedimentation basin has a flat design.

8. The sedimentation device according to claim 6 , and the outlet comprises a conveyor.

9. The sedimentation device according to claim 6 , and a pusher disposed at a bottom of the sedimentation basin and configured to be moved along the bottom and bring sediment to the outlet.

10. The sedimentation device according to claim 1 , and a control device configured to:
stop an introduction of liquid into the sedimentation basin through the inlet and start an emission of ultrasonic sound through the at least one stilling plate within the sedimentation basin, and subsequently start a removal of the sediment from the sedimentation basin through the outlet; and
stop the removal of sediment from the sedimentation basin through the outlet and then start the introduction of liquid into the sedimentation basin through the inlet, and stop the emission of ultrasonic sound through the at least one stilling plate within the sedimentation basin.

11. The sedimentation device according to claim 1 , and the material mix comprises plastic flakes.

12. The sedimentation device according to claim 1 , and the liquid comprises water.

13. The sedimentation device according to claim 3 , and the outlet is arranged in a funnel mouth of the funnel-shaped sedimentation basin.

14. The sedimentation device according to claim 4 , and the double gate comprises a first gate and a second gate.

15. The sedimentation device according to claim 7 , and the outlet is arranged in a side wall of the sedimentation basin.

16. The sedimentation device according to claim 8 , and a plurality of transverse ribs are arranged on the conveyor.

Assignees

• Krones Ag

Inventors

• Friedlaender Thomas

Classifications

• B01D21/34

  Controlling the feed distribution; Controlling the liquid level {; Control of process parameters} · CPC title

• C02F2305/12

  Inert solids used as ballast for improving sedimentation (C02F3/1226 takes precedence) · CPC title

• C02F1/36

  ultrasonic vibrations · CPC title

• B01D21/2461

  Positive-displacement pumps; Screw feeders; Trough conveyors · CPC title

• B01D21/245

  Discharge mechanisms for the sediments · CPC title