GB2240969A - Discharging material from a flexible container - Google Patents
Discharging material from a flexible container Download PDFInfo
- Publication number
- GB2240969A GB2240969A GB9003624A GB9003624A GB2240969A GB 2240969 A GB2240969 A GB 2240969A GB 9003624 A GB9003624 A GB 9003624A GB 9003624 A GB9003624 A GB 9003624A GB 2240969 A GB2240969 A GB 2240969A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- passage
- flexible passage
- flexible
- discharge apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/181—Preventing escape of dust by means of sealed systems
- B65G69/182—Preventing escape of dust by means of sealed systems with aspiration means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B69/00—Unpacking of articles or materials, not otherwise provided for
- B65B69/0008—Opening and emptying bags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Material flows downwardly through the neck 10 of a bag and through a tube 14 which extends into that neck, and that material falls into a discharge area 16 from which material is lead away via a tube 20. A small proportion of material may leak between the neck 10 and the tube 14 and that material falls on the outside of the tube 14 on to a downwardly tapering conical surface 22 and into the discharge area 18. The material passing down the conical surface 22 creates a dam 26 of material with that material in the dam taking momentum out of any particles caught in a back pressure moving upwardly. Vents 28 may be provided, and can be connected to an extractor fan. A resilient seal 16 pushes the neck 10 against the tube 14. <IMAGE>
Description
IMPROVEMENTS IN OR RELATING TO MATERIAL DISCHARGE.
The present invention relates to discharge apparatus and to methods of discharging material through a flexible passage and is particularly, although not exclusively applicable with such apparatus and methods for discharging material from flexible bulk containers.
In a known discharge arrangement for a bulk bag of material having a flexible outlet nozzle, a rigid end of a discharge pipe is inserted into the nozzle, and bands are fastened over the nozzle to hold the nozzle against the pipe. During discharge, material passes from the bag through the pipe. However, as the bands cannot be attached at the very uppermost end of the pipe, and as there is inevitably a spillage of material when fastening and unfastening the discharge pipe and because of the difficulty in getting an effective band to seal the nozzle to the pipe there is spillage of the material outside of the pipe, particularly during connection and disconnection of the bag but also during discharge of material from the bag.The tendency of material to pass over the side of the pipe is increased because of the weight of the material in the bag tending to push the outlet passage open as wide as possible.
According to one aspect of the present invention, discharge apparatus includes a member arranged to be located within a flexible passage and a discharge passage located beneath the member arranged, in use, to receive material passing between a flexible passage and the member. With such an apparatus, any material passing between the member and the flexible passage is able to pass to the discharge region rather than being spilled.
Preferably the member includes a hollow portion, and. the discharge passage may be arranged to receive material passing through the hollow portion as well as material passing between the support member and a flexible passage.
One or more openings may be provided through which material which has passed between the member and a flexible passage is able to pass into the discharge passage.
The material which has passed between the member and a flexible passage may be arranged to move inwardly, or downwardly and inwardly into the discharge passage.
One or more vents may be provided with the or each vent being located above the discharge passage.
The member may be circular in cross-section at at least part of its extent arranged to be located within a flexible passage.
The discharge passage may be arranged to receive material passing between a flexible passage and the member from around the complete extent of the member.
Gripping means may be provided arranged to hold a flexible passage against the member. The gripping means may be arranged to seal a flexible passage onto the member or to seal with the flexible passage or both.
The present invention also includes a flexible passage having the member of the herein referred to discharge apparatus extending therein.
According to another aspect of the present invention, a method of discharging material through a flexible passage comprises locating a member within the flexible passage and allowing any material passing between the member and the flexible passage to pass to a discharge region located beneath the member.
The method may also comprise material passing within the member to pass to the discharge region.
The method may comprise allowing any material which has passed between the member and the flexible passage to pass through an opening or openings into the discharge region.
The method may comprise allowing any material which has passed between the member and the flexible passage to pass inwardly, or inwardly and downwardly into the discharge region.
The method may comprise allowing any pressure to be vented from above the discharge region.
The method may comprise the discharge region being able to receive any material passing between the member and the flexible passage from around the complete extent of the member.
The method may comprise gripping the flexible passage against the member. The flexible passage may be sealed against the member.
According to a further aspect of the present invention, discharge apparatus which is arranged to receive material from a flexible passage includes a discharge region arranged to be located beneath a flexible passage and vent means through which pressure in the discharge region is arranged to be vented.
The discharge apparatus may include a member arranged to be located within a flexible passage, and the discharge region may be arranged to receive material passing between the member and a flexible passage.
In use, pressure in the discharge region may be arranged to be vented through a dam of material which is arranged to be discharged by the apparatus.
The discharge apparatus may include a member arranged to be located within a flexible passage. The discharge region may be arranged to receive material passing between the member and a flexible passage. The material in the dam through which pressure in the discharge region may be arranged to be vented may be provided by material which is passed between a flexible passage and the member arranged to be located in a flexible passage.
According to another aspect of the present invention a method of discharging material from a flexible passage through a discharge region comprises venting pressure in the discharge region.
The method may comprise venting pressure in the discharge region through a dam of the material which is being discharged.
The method may comprise locating a member into the flexible passage and providing material for the dam through which pressure may be vented from material which has passed between the member and the flexible passage.
The present invention includes any of the herein described features.
The present invention may be carried into practice in various ways but one embodiment will now be described by way of example and with reference to the accompanying drawing which is a schematic cross-sectional view showing the lower end of an outlet neck 10 of a large flexible bag (not shown) fitted to a discharge device 12.
The neck 10 is fitted to the device 12 as follows. The bag is sealed with a draw band (not shown) above the bottom of the neck and the bag is manoeuvred until the free neck 10 is in the region of the device.
The flexible circular neck 10 is then arranged over the end of an upwardly extending circular tube 14. As the neck 10 is slid downwardly over the tube it is tucked inside a resilient seal 16, which seal pushes the neck against the tube 14.
When discharge of material within the bag is to occur, the drawband (not shown) above the neck is released and material flows downwardly through the neck 10 and the tube 14 and falls into a discharge area 18 from which material is led away via a tube 20, which is connected further down to a valve (not shown).
A small proportion of material may also leak between the neck 10 and the tube 14, and that material falls on the outside of the tube 14 onto a downwardly tapering conical surface 22 and into the discharge area 18. The tube 14 is supported by, but spaced above the face of the conical surface 22 by four equispaced flanges 24 which connect those parts. Thus the material is able to pass through the four large openings between the tube and the conical surface. If the leakage of material between the neck 10 and the tube 14 is more than a very small amount (which may be the case as a result of the high downwards pressure of the material in the bag around the top of the tube or which may also be the case if the seal 16 is not present), then a "dam" 26 of material may be present during discharge immediately above the discharge area 18.Alternatively or additionally, when discharge is complete, and when the neck is being disconnected from the tube, leakage of material may also occur between the neck and the tube, with that leakage falling to the discharge area.
In the event that a back pressure is experienced during discharge in the discharge area 18, which can often be the case, that back pressure can either be dissipated into the bag through the tube or, alternatively or additionally, the pressure can be dissipated through a pair of vents 28 located on opposed sides and extending from the top of the conical surface 22. Those vents can be connected to an extractor fan or pump to assist in the venting of the discharge area. The provision of the vents and the seal 16 help in maintaining the ambient environment substantially dust free.
When a dam 26 is present, any air moving because of the back pressure has to pass through the dam before entering the vents 28, and the particles of material in the dam serve to take the momentum out of the back pressure and to .pa entrap any particles which may be moving upwardly from the discharge region thereby assisting in maintaining the vents substantially dust or particle free.
Claims (30)
1. Discharge apparatus including a member arranged to be located within a flexible passage and a discharge passage located beneath the member arranged, in use, to receive material passing between a flexible passage and the member.
2. Discharge apparatus as claimed in Claim 1 in which the member may include a hollow portion, and the discharge passage may be arranged to receive material passing through the hollow portion as well as material passing between the support member and a flexible passage.
3. Discharge apparatus as claimed in Claim 1 or 2 including an opening or openings through which material which has passed between the member and a flexible passage is able to pass into the discharge passage.
4. Discharge apparatus as claimed in any preceding claim in which the material which has passed between the member and a flexible passage is arranged to move inwardly into the discharge passage.
5. Discharge apparatus as claimed in any preceding claim in which the material which has passed between the member and the flexible passage is arranged to move downwardly and inwardly into the discharge passage.
6. Discharge apparatus as claimed in any preceding claim including one or more vents with the or each vent being located above the discharge passage.
7. Discharge apparatus as claimed in any preceding claim in which the member is circular in cross-section at at least part of its extent arranged to be located within a flexible passage.
8. Discharge apparatus as claimed in any preceding claim in which the discharge passage is arranged to receive material passing between the flexible passage and the member from around the complete extent of the member.
9. Discharge apparatus as claimed in any preceding claim including gripping means arranged to hold a flexible passage against the member.
10. Discharge apparatus as claimed in Claim 9 in which the gripping means are arranged to seal a flexible passage on to the member.
11. Discharge apparatus as claimed in Claim 9 or 10 in which the gripping means are arranged to seal with the flexible passage.
12. A discharge arrangement including a flexible passage having a member of a discharge apparatus as claimed in any of Claims 1 to 11 extending therein.
13. A method of discharging material through a flexible passage comprising locating a member within the flexible passage and allowing any material passing between the member and the flexible passage to pass to a discharge region located beneath the member.
14. A method as claimed in Claim 13 comprising material passing within the member passing to the discharge region.
15. A method as claimed in Claim 13 or 14 comprising allowing any material which has passed between the member and the flexible passage to pass through an opening or openings into the discharge region.
16. A method as claimed in any of Claims 13 to 15 comprising allowing any material which has passed between the member and the flexible passage to pass inwardly into the discharge region.
17. A method as claimed in any of Claims 13 to 16 comprising allowing any material which has passed between the member and the flexible passage to pass inwardly and downwardly into the discharge region.
18. A method as claimed in any of Claims 13 to 17 comprising allowing any pressure to be vented from above the discharge region.
19. A method as claimed in any of Claims 13 to 18 comprising the discharge region being able to receive any material passing between the member and the flexible passage from around the complete extent of the member.
20. A method as claimed in Claim 19 comprising the flexible passage sealing against the member.
21. Discharge apparatus arranged to receive material from a flexible passage, the apparatus including a discharge region arranged to be located beneath a flexible passage and vent means through which pressure in the discharge region is arranged to be vented.
22. Discharge apparatus as claimed in Claim 21 including a member arranged to be located within a flexible passage, the discharge region being arranged to receive material passing between the member and a flexible passage.
23. Discharge apparatus as claimed in Claim 22 in which the discharge region is arranged to receive material passing between the member and a flexible passage.
24. Discharge apparatus as claimed in Claim 22 or 23 in which, in use, pressure in the discharge region is arranged to be vented through a dam of material.
25. Discharge apparatus as claimed in Claim 22 or 23 and
Claim 24 in which the material in the dam through which pressure in the discharge region is arranged to be vented is provided by material which has passed between a flexible passage and the member arranged to be located in a flexible passage.
26. Discharge apparatus substantially as herein described with reference to, and as shown in the accompanying figure.
27. A method of discharging material from a flexible passage through a discharge region comprising venting pressure in the discharge region.
28. A method as claimed in Claim 27 comprising venting pressure in the discharge region through a dam of material which is being discharged.
29. A method as claimed in Claim 27 or 28 comprising locating a member into the flexible passage and providing material for the dam through which pressure may be vented from material which has passed between the member and the flexible passage.
30. A method of discharging material from a flexible passage substantially as herein described with reference to, and as shown in the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9003624A GB2240969A (en) | 1990-02-16 | 1990-02-16 | Discharging material from a flexible container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9003624A GB2240969A (en) | 1990-02-16 | 1990-02-16 | Discharging material from a flexible container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9003624D0 GB9003624D0 (en) | 1990-04-11 |
| GB2240969A true GB2240969A (en) | 1991-08-21 |
Family
ID=10671174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9003624A Withdrawn GB2240969A (en) | 1990-02-16 | 1990-02-16 | Discharging material from a flexible container |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2240969A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507602A (en) * | 1994-10-14 | 1996-04-16 | J. M. Huber Corporation | Powder transfer from supersack containers and dispersion into a homogeneous slurry |
| FR2783815A1 (en) * | 1998-09-26 | 2000-03-31 | Flomat Bagfilla Int Ltd | METHOD AND APPARATUS FOR EMPTYING BAGS |
| CN105358438A (en) * | 2013-07-03 | 2016-02-24 | 株式会社普利司通 | Method and device for crushing and discharging granular clump material inside flexible container |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114919879B (en) * | 2022-06-02 | 2023-07-18 | 安徽云龙粮机有限公司 | Discharge caliber-adjustable environment-friendly grain receiving bin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001278A1 (en) * | 1979-11-05 | 1981-05-14 | S Carlsson | An apparatus for emptying single or multi-walled packages |
| US4290466A (en) * | 1979-11-15 | 1981-09-22 | Oscar Villa | Convertible container-holder that becomes the neck of a folding receptacle |
| GB2135652A (en) * | 1983-01-17 | 1984-09-05 | Hollister Inc | Access port forming device and method |
| US4492294A (en) * | 1980-03-03 | 1985-01-08 | The W. W. Sly Manufacturing Co. | Bulk conveyor apparatus |
-
1990
- 1990-02-16 GB GB9003624A patent/GB2240969A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001278A1 (en) * | 1979-11-05 | 1981-05-14 | S Carlsson | An apparatus for emptying single or multi-walled packages |
| US4290466A (en) * | 1979-11-15 | 1981-09-22 | Oscar Villa | Convertible container-holder that becomes the neck of a folding receptacle |
| US4492294A (en) * | 1980-03-03 | 1985-01-08 | The W. W. Sly Manufacturing Co. | Bulk conveyor apparatus |
| GB2135652A (en) * | 1983-01-17 | 1984-09-05 | Hollister Inc | Access port forming device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507602A (en) * | 1994-10-14 | 1996-04-16 | J. M. Huber Corporation | Powder transfer from supersack containers and dispersion into a homogeneous slurry |
| FR2783815A1 (en) * | 1998-09-26 | 2000-03-31 | Flomat Bagfilla Int Ltd | METHOD AND APPARATUS FOR EMPTYING BAGS |
| CN105358438A (en) * | 2013-07-03 | 2016-02-24 | 株式会社普利司通 | Method and device for crushing and discharging granular clump material inside flexible container |
| CN105358438B (en) * | 2013-07-03 | 2017-05-03 | 株式会社普利司通 | Method and device for crushing and discharging granular clump material inside flexible container |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9003624D0 (en) | 1990-04-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |