Dual auger internal clean-in-place bearing

Patent metadata

Field	Value
Publication number	US-2020205366-A1
Application number	US-201816233155-A
Country	US
Kind code	A1
Filing date	Dec 27, 2018
Priority date	Dec 27, 2018
Publication date	Jul 2, 2020
Grant date	—

Abstract

An auger assembly (1) for receiving and conveying cheese curd downstream along a cheese processing line (32) includes an auger housing (2), a first auger (3) having a first shaft (5) extending through the auger housing (2), a second auger (4) having a second shaft (6) extending through the auger housing (2) and arranged Dcolinearly with the first shaft (5), a first bearing (9) mounted to the auger housing (2) and arranged at the end (7) of the first shaft (5), and a second bearing (10) mounted to the auger housing (2) and arranged at the end (8) of the second shaft (6). The first bearing (9) and second bearing (10) are colinear and facing each other. At least one slotted groove (11, 12) is formed the bearings (9, 10) to enable a cleaning fluid to contact a surface (13, 14) of the respective bearing (9, 10).

First claim

1 . An auger assembly for receiving particles of cheese curd and conveying the particles of cheese curd downstream along a cheese processing line, the auger assembly comprising:
an auger housing, a first auger having a first shaft extending through the auger housing, a second auger having a second shaft extending through the auger housing and arranged colinearly with the first shaft, the second shaft having an end that faces an end of the first shaft, a first bearing mounted to the auger housing and arranged at the end of the first shaft, and a second bearing mounted to the auger housing and arranged at the end of the second shaft, the first bearing and second bearing being colinear and facing each other, and at least one slotted groove formed in each of the first bearing and the second bearing to enable a cleaning fluid to contact a surface of the respective bearing.

2 . The auger assembly according to claim 1 , wherein the at least one slotted groove extends through an entire longitudinal length of the respective bearing.

3 . The auger assembly according to claim 1 , wherein the first and second bearing each have a slip fit connection with the first and second shaft, respectively.

4 . The auger assembly according to claim 1 , wherein the first shaft and the second shaft are axially spaced from each other by a predetermined distance.

5 . The auger assembly according to claim 1 , wherein the first and second bearing are fixedly secured to the auger housing and the first and second shaft are rotatable relative to the first and second bearing within the auger housing.

6 . The auger assembly according to claim 1 , further comprising at least one locating pin arranged on each of the first and second bearing.

7 . The auger assembly according to claim 6 , wherein the at least one locating pin is seal welded to each of the first and second bearing.

8 . The auger assembly according to claim 1 , further comprising a mounting bracket that is attached to the first and second bearing.

9 . The auger assembly according to claim 8 , further comprising a cleaning fluid line that is supported by the mounting bracket to direct the cleaning fluid to the at least one slotted groove formed in each of the first and second bearing.

10 . The auger assembly according to claim 8 , wherein each of the first and second bearing has a radially extending shoulder to retain the first and second bearing against the mounting bracket.

11 . The auger assembly according to claim 8 , wherein the mounting bracket and the first and second bearing are removably attachable to the auger housing.

12 . The auger assembly according to claim 8 , wherein the mounting bracket includes a plate attached to a wall of the auger housing and a mounting arm extending from the plate to the first and second bearing.

13 . The auger assembly according to claim 1 , further comprising:
a first spiral flight attached to the first shaft, a second spiral flight attached to the second shaft, a first outlet arranged at an opposite end of the first shaft opposite the end that faces the end of the second shaft, and a second outlet arranged at an opposite end of the second shaft opposite the end that faces the end of the first shaft.

14 . The auger assembly according to claim 13 , further comprising:
a first drive that is arranged at the opposite end of the first shaft for driving the first shaft, and a second drive that is arranged at the opposite end of the second shaft for driving the second shaft.

15 . A method for operating an auger assembly arranged to rotate a first auger and a second auger to convey cheese curd downstream along a cheese processing line, the method comprising:
supplying particles of cheese curd to the first auger and the second auger that are colinearly arranged, driving a first shaft of the first auger and a second shaft of the second auger, expelling the particles of cheese curd through outlets at an end of the first auger and at an end of the second auger to convey the particles of cheese curd downstream along the cheese processing line, and supplying a cleaning fluid directly to bearings in the first and second auger that are arranged for mounting the first and second shaft within an auger housing.

Assignees

• Tetra Laval Holdings & Finance

Inventors

• Johnson Kyle
• Olson Michael

Classifications

• A01J25/002 Primary

  continuously · CPC title

• B01F2101/11

  Mixing of cheese ingredients · CPC title

• B65G33/18

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

• B65G33/32

  Adaptations of bearings or couplings for supporting and connecting screws (B65G33/16 takes precedence) · CPC title

• B65G45/005

  Cleaning conveyor screws · CPC title