Apparatus for separating materials of different flowability that are mixed together

Patent metadata

Field	Value
Publication number	US-11760050-B2
Application number	US-202117376536-A
Country	US
Kind code	B2
Filing date	Jul 15, 2021
Priority date	Jul 15, 2020
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

An apparatus for separating materials of different flowability that are mixed together has a frame structure; a hollow drum driven in a rotational direction and having a perforated peripheral surface and an open end face; a continuous press belt pressed from outside onto the peripheral surface when wrapped around part of the circumference of the drum; a product intake wedge formed by the belt and drum, for conducting a product stream into the apparatus between the drum and belt; and a device for discharging separated product, which has been pressed from the outside through the perforated peripheral surface into the hollow chamber, from the end face. The discharging device includes a scraping element in an upper region of the drum, and includes at least one scraping element section, which has a tilt angle of more than 90° to a tangential plane of the peripheral surface against the direction of rotation.

First claim

The invention claimed is:

1. An apparatus for separating materials of different flowability that are mixed together, comprising:
a frame structure;
a hollow drum mounted on the frame structure and driven in rotation in a rotational direction, the hollow drum having a perforated peripheral surface and at least one at least partially open end face;
a continuous press belt pressed from outside onto the peripheral surface of the hollow drum when wrapped around part of a circumference of the hollow drum, the continuous belt being driven in circulation in a conveying direction;
a product intake wedge formed by the press belt and hollow drum, for conducting a product stream, consisting of a product to be pressed, into the apparatus between the hollow drum and the press belt in an inlet area of the product stream; and
a device for discharging separated product pressed from the outside through the perforated peripheral surface into a hollow chamber of the hollow drum from the at least partially open end face of the hollow drum;
wherein the device for discharging the separated product comprises a stationary scraping element disposed in an upper region of the hollow drum, the scraping element having at least one scraping element section, the at least one scraping element section includes a first scraping element section which is adjacent to an inside of the peripheral surface and has a tilt angle of greater than or equal to 105° to a tangential plane of the peripheral surface against the direction of rotation.

2. The apparatus according to claim 1 , wherein the stationary scraping element in the upper region of the hollow drum is disposed in a position that corresponds at least substantially to a 12 o'clock position.

3. The apparatus according to claim 1 , wherein the tilt angle is greater than or equal to 110° or greater than or equal to 115°.

4. The apparatus according to claim 1 , wherein the at least one scraping element section includes a second scraping element section which has an angle to the first scraping element section and wherein the second scraping element section is radially inboard relative to the first scraping element section.

5. The apparatus according to claim 4 , wherein the second scraping element section is arranged on an edge of the first scraping element section facing away from the peripheral surface and substantially parallel to a direction of the active gravitational force.

6. The apparatus according to claim 1 , wherein the at least one scraping element section includes a third scraping element section which is arranged on an edge of the second scraping element section facing away from the first scraping element section and has an angle of less than 90°, or less than 75°, or less than 50°, to the tangential plane of the peripheral surface in the direction of rotation.

7. The apparatus according to claim 6 , wherein a length of the second scraping element section is at least twice, or at least three times, or at least four times a length of the first and/or third scraping element section.

8. The apparatus according to claim 1 , wherein a total extent of the stationary scraping element from the inside of the peripheral surface in a radial extent amounts to 0.5 to 1.5 times, or 0.8 to 1.3 times, or 0.9 to 1.1 times the drum radius.

9. The apparatus according to claim 1 , wherein between an end of the first scraping element section facing the peripheral surface and the peripheral surface, there is a distance of at least 0.5 mm, or at least 1 mm, or at least 2 mm, or at least 3 mm.

10. The apparatus according to claim 1 , wherein the at least one stationary scraping element is arranged parallel to the drum axis.

11. The apparatus according to claim 1 , further comprising a removable lip attached to an end of the first scraping element section facing the peripheral surface.

12. The apparatus according to claim 1 , wherein the at least one stationary scraping element is arranged on a carrier protruding into the hollow chamber of the hollow drum.

13. The apparatus according to claim 12 , wherein the at least one stationary scraping element is arranged on a crosspiece which is releasably attached to the frame structure.

14. The apparatus according to claim 1 , further comprising a cooling device assigned to the hollow drum and configured and adapted for cooling the separated product using a cryogenic cooling medium during processing.

15. A method for separating materials of different flowability that are mixed together, comprising the steps:
supplying a product stream, comprising a product to be pressed, into a product intake wedge which is formed by a hollow drum with a perforated peripheral surface and a press belt which lies on and is wrapped around a part of a circumference of the hollow drum from outside;
driving the hollow drum and/or the press belt in circulation in order to draw in the product stream between the hollow drum and the press belt;
wherein more easily flowing constituents of the product stream are pressed as separated product into a hollow chamber of the hollow drum by the press belt through the perforations of the peripheral surface of the hollow drum, and discharged from an at least partially open end face of the hollow drum, while less easily flowing constituents of the product stream remain on the outside of the peripheral surface of the hollow drum and are discharged separately;
scraping away separated product, which was pressed through the perforated peripheral surface into the hollow chamber of the hollow drum, from an inner surface of the hollow drum in an upper region of the hollow drum, the scraping away step comprising scraping away the separated product by a stationary scraping element with a first scraping element section which is adjacent to an inside of the peripheral surface and has an angle of greater than or equal to 105° to a tangential plane of the peripheral surface against a direction of rotation.

16. The method according to claim 15 , wherein the upper region of the hollow drum corresponds at least substantially to a 12 o'clock position.

17. The method according to claim 15 , wherein the angle is more than 130°.

18. The method according to claim 15 , further comprising providing the apparatus of claim 1 .

19. An apparatus for separating materials of different flowability that are mixed together, comprising:
a frame structure;
a hollow drum mounted on the frame structure and driven in rotation in a rotational direction, the hollow drum having a perforated peripheral surface and at least one at least partially open end face;
a continuous press belt pressed from outside onto the peripheral surface of the hollow drum when wrapped around part of a circumference of the hollow drum, the continuous belt being driven in circulation in a conveying direction;
a product intake wedge formed by the press belt and hollow drum, for conducting a product stream, consisting of a product to be pressed, into the apparatus between the hollow drum and the press belt in an inlet area of the product stream; and
a device for discharging separated product pressed from the outside through the perforated peripheral surface into a hollow chamber of the hollow drum from the at least partially open end face of the hollow drum;
wherein:
the device for discharging the separated product comprises a stationary scraping element disposed in an upper region of the hollow drum, the stationary scraping element having at least one scraping element section, the at least one scraping element section includes a first scrapi

Assignees

• Nordischer Maschinenbau

Inventors

• Fuchs Michael
• Hanf Friedemann
• Härtlein Joachim
• Karsten Uwe
• Schwarz Olaf

Classifications

• B30B9/241 Primary

  co-operating with a drum or roller · CPC title

• A22C17/04

  Bone cleaning devices · CPC title

• B30B15/08

  Accessory tools, e.g. knives; Mountings therefor · CPC title

• B30B15/30

  Feeding material to presses · CPC title