Adjustable screw conveyor for material processing

Patent metadata

Field	Value
Publication number	US-12589946-B2
Application number	US-202418603506-A
Country	US
Kind code	B2
Filing date	Mar 13, 2024
Priority date	Mar 13, 2024
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

An adjustable screw conveyor includes a plurality of adjustable helical blades disposed in an enclosure having an inlet at a first end of the enclosure and an outlet at a second end of the enclosure, where the plurality of adjustable helical blades includes a first blade and a second blade. The adjustable screw conveyor further includes the plurality of adjustable helical blades being coupled to a first shaft via a plurality of pitch adjustment modules, where a pitch between the first blade and the second blade of the plurality of adjustable helical blades is adjustable.

First claim

What is claimed is:

1 . An adjustable screw conveyor comprising:
a plurality of adjustable helical blades disposed in an enclosure having an inlet at a first end of the enclosure and an outlet at a second end of the enclosure, wherein the plurality of adjustable helical blades includes a first blade and a second blade; and the plurality of adjustable helical blades are coupled to a first shaft via a plurality of pitch adjustment modules located along a length of the first shaft, wherein a pitch between the first blade and the second blade of the plurality of adjustable helical blades is adjustable.

2 . The adjustable screw conveyor of claim 1 , further comprising:
a second shaft disposed within the first shaft, wherein the first shaft is an outer shaft and the second shaft is an inner shaft; and the second shaft coupled to a motor mechanism.

3 . The adjustable screw conveyor of claim 2 , wherein the first shaft is coupled to a shaft coupling mechanism.

4 . The adjustable screw conveyor of claim 3 , wherein the shaft coupling mechanism in an engaged position mechanically couples the first shaft to the second shaft and a rotational torque applied by the motor mechanism to the second shaft is transferred to the first shaft.

5 . The adjustable screw conveyor of claim 3 , wherein the shaft coupling mechanism in a disengaged position mechanically decouples the first shaft to the second shaft and a rotational torque applied by the motor mechanism to the second shaft is not transferred to the first shaft.

6 . The adjustable screw conveyor of claim 3 , further comprising:
a track positioned on an exterior surface of the second shaft.

7 . The adjustable screw conveyor of claim 6 , further comprising:
a first pitch adjustment module coupled to the first blade, wherein a first block of the first pitch adjustment module is configured to engage with the track on the exterior surface of the second shaft when activated; and a second pitch adjustment module coupled to the second blade, wherein a second block of the second pitch adjustment module is configured to engage with the track on the exterior surface of the second shaft when activated.

8 . The adjustable screw conveyor of claim 7 , wherein a first portion of the plurality of adjustable helical blades coupled to the first shaft are at a first pitch and a second portion of the plurality of adjustable helical blades coupled to the first shaft are at a second pitch.

9 . The adjustable screw conveyor of claim 8 , wherein the first portion of the plurality of adjustable helical blades coupled to the first shaft are positioned between the inlet at the first end of the enclosure and the outlet at the second end of the enclosure.

10 . The adjustable screw conveyor of claim 9 , wherein the second portion of the plurality of adjustable helical blades coupled to the first shaft are positioned between the outlet at the second end of the enclosure and an end cap of the enclosure.

11 . The adjustable screw conveyor of claim 10 , wherein the first portion of the plurality of adjustable helical blades coupled to the first shaft includes the first blade and the second blade.

12 . The adjustable screw conveyor of claim 11 , wherein the second portion of the plurality of adjustable helical blades coupled to the first shaft includes a third blade and a fourth blade.

13 . The adjustable screw conveyor of claim 2 , wherein the plurality of adjustable helical blades is a helical spring structure.

14 . The adjustable screw conveyor of claim 6 , further comprising:
a first pitch adjustment module coupled to the first blade, wherein a first block of the first pitch adjustment module is configured to disengage with the track on the exterior surface of the second shaft when deactivated; and a second pitch adjustment module coupled to the second blade, wherein a second block of the second pitch adjustment module is configured to disengage with the track on the exterior surface of the second shaft when deactivated.

15 . The adjustable screw conveyor of claim 2 , wherein the second shaft is disposed through a first central axis of the first shaft.

16 . The adjustable screw conveyor of claim 12 , wherein the first shaft is disposed through a second central axis of the plurality of adjustable helical blades.

17 . A method for configuring an adjustable screw conveyor, the method comprising:
determining material specification and a plurality of material processing properties; determining a configuration for the adjustable screw conveyor based on the material specification and the plurality of material processing properties; deactivating a shaft coupling mechanism for the adjustable screw conveyor; activating a plurality of pitch adjustment modules for the adjustable screw conveyor; and activating a motor mechanism for the adjustable screw conveyor.

18 . The method of claim 17 , wherein deactivating the shaft coupling mechanism decouples an outer shaft with a plurality of adjustable helical blades from an inner shaft.

19 . The method of claim 18 , wherein activating the plurality of pitch adjustment modules includes a plurality of blocks engaging with a track positioned on an exterior surface of the inner shaft.

20 . The method of claim 19 , wherein activating the motor mechanism applies a rotational torque to the inner shaft and adjusts a pitch for the plurality of adjustable helical blades on the outer shaft via the plurality of blocks engaging with the track positioned on the exterior surface of the inner shaft.

Assignees

• IBM

Inventors

• Rakshit Sarbajit K
• Thomas Binoy
• Kairali Sudheesh S

Classifications

• B65G33/14

  comprising a screw or screws enclosed in a tubular housing · CPC title

• B65G2207/08

  Adjustable and/or adaptable to the article size · CPC title

• B65G33/265 Primary

  with a continuous helical surface (flexible screws B65G33/16) · CPC title

• B65G33/18

  with multiple screws in parallel arrangements {, e.g. concentric} · CPC title

• B65G33/24 Primary

  Details · CPC title