Device For Separating Granular Material

• US 20080087581A1
• Filed: 09/08/2005
• Published: 04/17/2008
• Est. Priority Date: 11/09/2004
• Status: Abandoned Application

• Current Assignee: Buhler AG (Buhler Holding AG)
• Original Assignee: Buhler AG (Buhler Holding AG)
• Inventors: Linder, Marcel, Eisenhut, Erika
• Application Number:
  US11/665,933
• Publication Number:
  US 20080087581A1
• Time in Patent Office: Days
• US Class Current: 209/318
• CPC Class Codes: B03B 4/02 using swinging or shaking tables
• CPC Class Codes: B07B 1/4636 Regulation of screen apertures
• CPC Class Codes: B07B 13/08 according to weight B07B13/10 takes precedence
• CPC Class Codes: B07B 2201/04 Multiple deck screening devices comprising one or more superimposed screens
• CPC Class Codes: B07B 4/08 while the mixtures are supported by sieves, screens, or like mechanical elements

Abstract

The invention relates to a device for separating granular material, especially a light grain selector for cereal crops or similar, comprising a sieve cage with at least two sieve layers that are provided with perforated plates. The sieve layers can be penetrated by air from below. The sieve cage is equipped with at least one oscillating drive unit while each sieve layer (2 to 5) encompasses a final separation zone.

Claims

1. A device for separating granular material, which has a screen box with at least two screen layers with screen plates, wherein air can be passed through the screen layers from below, and the screen box is provided with at least one oscillating drive, and wherein each screen layer has a final separation zone or final separation device.

2. The device according to claim 1, wherein screen plates of the final separation devices are provided with openings, the size of which can be varied.

3. The device according to claim 1, wherein the inclination of the lowermost screen layer is variable.

4. The device according to claim 2, wherein the inclination of the lowermost screen layer is variable.

5. A light grain sorter for separating granular material, comprising:

a screen box provided with at least one oscillating drive, and

at least two screen layers with screen plates, wherein the screen layers are open to passage of air, and wherein each screen layer has a final separation zone or final separation device.