METHOD AND APPARATUS FOR FILLING OPEN CONTAINERS WITH A POWDERY PRODUCT

• US 20110056585A1
• Filed: 11/09/2010
• Published: 03/10/2011
• Est. Priority Date: 05/14/2004
• Status: Active Grant

• Current Assignee: Haver & Boecker OHG
• Original Assignee: Haver & Boecker OHG
• Inventors: COMBRINK, ALOIS
• Granted Patent: US 8,069,882 B2
• Time in Patent Office: Days
• US Class Current: 141/74
• CPC Class Codes: B65B 1/22 by vibration
• CPC Class Codes: B65B 1/26 by pneumatic means, e.g. suction
• CPC Class Codes: B65B 1/32 by weighing check-weighing of filled containers or receptacles B65B1/46
• CPC Class Codes: G01G 13/006 Container supply or discharge mechanism means for automatic loading or discharging G01G13/02, G01G13/16, G01G13/24

Abstract

Apparatus and method for filling a container (7), particularly an open bag, with a powdery product has the following features” a net scale (1) situated above a tube arrangement and/or hopper arrangement (2), which terminates in a filler neck (6) above the container (7) to be filled while preferably projecting into this container. An intermediate chamber (3) is arranged downstream of the net scale and upstream of the container (7) to temporarily hold at least a portion of the product released by the net scale, and a compacting device (8, 9) is provided for compacting the product placed inside the container (7).

Claims

1. Apparatus for filling an open-topped container, such as a bag, with a powdery product, comprising:

a net scale for releasing a product;

a tube arrangement and/or hopper arrangement disposed below the net scale and terminating in a filling neck arranged above a container to be filled;

an intermediate chamber disposed downstream of the net scale and upstream of the container for temporarily holding at least a first portion of the product released by the net scale; and

a compaction device for compacting the product filled into the container.

2. The apparatus of claim 1, wherein the filling neck projects into the container.

3. The apparatus of claim 1, wherein the intermediate chamber is arranged in the tube arrangement and/or hopper arrangement and extends across part of a cross section of the tube arrangement and/or hopper arrangement so that the first portion of the product is introduced via the intermediate chamber into the container while a remaining second portion of the product released by the net scale is introduced directly into the container.

4. The apparatus of claim 1, wherein the first portion of the product amounts to about 20-50% of the product.

5. The apparatus of claim 1, wherein the first portion of the product amounts to about ⅓

of the product.

6. The apparatus of claim 1, further comprising a fill level sensor for detecting a fill level in the container.

7. The apparatus of claim 1, wherein the intermediate chamber is comprised of several sub-chambers which can be emptied separately.

8. The apparatus of claim 1, further comprising a dosing member provided in the intermediate chamber for metered release of the first portion of the product into the container.

9. The apparatus of claim 8, wherein the dosing member is a rotary feeder.

10. The apparatus of claim 8, wherein the dosing member is a controllable swivel gate.

11. The apparatus of claim 1, wherein the intermediate chamber is constructed of variable volume.

12. The apparatus of claim 1, wherein the filling neck is provided with ventilation channels.

13. The apparatus of claim 1, wherein the compaction device includes a probe projecting into the container.

14. The apparatus of claim 1, wherein the compaction device includes a shaking unit.

15. The apparatus of claim 1, wherein the compaction device includes a vibrating table upon which the container is placed.

16. The apparatus of claim 1, wherein the intermediate chamber extends across an entire cross section of the tube/hopper arrangement so that the product released by the net scale is received in its entirety in the intermediate chamber.

17. The apparatus of claim 1, constructed as a rotating filling machine.