EP0139032A1 - Tuyère de remplissage pour sac à valve - Google Patents
Tuyère de remplissage pour sac à valve Download PDFInfo
- Publication number
- EP0139032A1 EP0139032A1 EP83110513A EP83110513A EP0139032A1 EP 0139032 A1 EP0139032 A1 EP 0139032A1 EP 83110513 A EP83110513 A EP 83110513A EP 83110513 A EP83110513 A EP 83110513A EP 0139032 A1 EP0139032 A1 EP 0139032A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- bag
- filling
- low pressure
- valve
- 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- Withdrawn
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Classifications
-
- 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
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
Definitions
- the present invention relates to the filling of valve bags with particulate material and, more particularly, to a novel filling nozzle which eliminates the sifting of product from the valve bag during and after the bag filling operation.
- Particulate materials are commonly packaged in bags that are made from multiple layers of paper and have a "valve" in one upper corner.
- the valve provides an opening through which the material is dispensed during the bag filling operation.
- the valve bag is typically filled by inserting a spout or nozzle into the valve and causing material to flow through the nozzle into the bag.
- the flow of material is halted and the nozzle is withdrawn from the valve usually by moving the bag away from the nozzle.
- the valve is sealed to prevent egress of the material from the bag during shipping and handling.
- the spout of the present invention is particularly suited for use in conjunction with the filler sleeve disclosed in co-pending U.S. patent application Serial No. 300,038 filed September 8, 1981.
- the filler sleeve comprises an elongated tubular member which is connected to the top end of the bag.
- the tubular member includes an open end which is contiguous with a filler opening provided in the top end of the bag.
- the opposed end of the tubular member is closed, e.g., by heat sealing or folding.
- a longitudinally extending slit is provided in the tubular member disposed on the bottom surface thereof.
- the tubular member is formed from a stretchable material such as polyethylene, so that during the filling of the bag, the flow of the product stretches the material.
- the filling nozzle of the present invention is particularly suited for use with the slitted filler sleeve disclosed in the aforementioned co-pending application, those skilled in the art will appreciate that the present nozzle is also adaptable for use in conventional valve bags.
- Such entrapment of material can occur if the filling nozzle does not directly discharge product through the slitted sleeve. Material can also become entrapped if product dribbles out of the nozzle into the sleeve at the end of the filling cycle.
- a filling nozzle for a valve bag which directs the flow of product downwardly into the bag, thereby avoiding the direct discharge of product into the back end of the valve bag sleeve. It would be further advantageous if such a filling nozzle included a purge system to clear the nozzle of all product after a bag has been filled, to substantially reduce product dribble out of the nozzle, and to clear any product from the valve sleeve which remains after the bag has been filled.
- This invention relates to such a filling nozzle.
- a filling nozzle is provided for filling a valve bag.
- the nozzle comprises an elongated tube having a material passage therethrough. Means are provided for coupling one end of the material passage to a source of flowing particulate material.
- Low pressure conduit means runs along the tube for transmitting air under low pressure therethrough. Means for coupling the low pressure conduit means to a source of low pressure air, along with means for venting low pressure air from the low pressure conduit means through a port on the external surface of the tube are provided.
- a vacuum suction passage communicates with the material passage and means are provided for coupling the vacuum suction passage to a source of vacuum.
- a high pressure conduit means is provided in communication with the material passage, along with means for coupling the high pressure conduit means to a source of high pressure air.
- An inflatable boot can optionally be provided on the filling nozzle to seal the nozzle within a valve sleeve during the.bag filling operation.
- the bag In order to fill a valve bag, the bag is placed on the filling nozzle.
- the boot if provided, is expanded to seal the nozzle within the valve sleeve.
- Product is then caused to flow through the material passage in the nozzle to fill the bag.
- the product flow stops and high pressure air is injected into the material passage within the nozzle to clear excess product therefrom.
- Low pressure air is then injected outside of the nozzle to suspend product dribblings in. the valve sleeve.
- a vacuum is then applied to the vacuum suction passage to remove the dribblings suspended in the valve sleeve.
- the overall structure of the filling nozzle of the present invention is best shown in FIGURES 1 and 2.
- the nozzle includes an elongated tube 10, which is hollow to provide a material passage 15 therethrough.
- the nozzle is inserted into the bag as shown in FIGURE 5.
- Product flows into end 16 of the nozzle through product supply conduit 58.
- the product which is typically a particulate material, emerges from the nozzle through opening 12.
- the valve bag shown in FIGURE 5 includes a valve sleeve 52 having a slit 54 therein through which particulate material 56 passes. Once particulate material 56 has passed through slit 54, it is within the interior of bag 50.
- valve bag filling nozzles of prior design the opening at which the particulate product emerges for filling the bag is not designed to direct the flow of material exiting therefrom through a slitted valve sleeve.
- a slitted sleeve such as sleeve 52 shown in FIGURE 5
- product is forced into the closed end 53 of sleeve 52 where it can become lodged or otherwise remain after the filling of the bag has been completed.
- Product remaining at end 53 of valve sleeve 52 can later find its way out of the valve sleeve, causing the material (which may be hazardous or toxic) to exit from the bag. Any such leakage of product from the bag is highly undesirable.
- nozzles of prior design can cause the closed end 53 of the valve sleeve 52 to rupture due to the direct force of material which impacts the closed end.
- opening 12 is situated so that when the nozzle is inserted into a slitted valve sleeve, the product flowing through the nozzle will be directed through the slit and into the bag, thereby minimizing the risk that the product will be caught in the closed end of the valve sleeve.
- the design of opening 12, by directing product downwardly, also prevents the rupture of the closed end of the valve sleeve.
- the filling nozzle of the present invention also includes various means for clearing the nozzle of residual particulate material after the product flow has ceased and for removing any particulate material which may otherwise remain in the valve sleeve after the bag has been filled. Also provided is means for sealing the nozzle within the valve sleeve of a bag during the filling operation.
- the sealing of the nozzle within-a valve sleeve is accomplished by an inflatable rubber boot 14.
- Rubber boot 14 is inflated by a pressurized fluid, for example, pressurized air, which is introduced to the boot through a conduit 34.
- Conduit 34 is most clearly shown in FIGURES 2 and 3 and is connected to a hose 38 by coupling 36.
- Hose 38 is fed by a timed source of pressurized air (not shown) which is caused by suitable control means to inflate rubber boot 14 just after the nozzle is inserted into an empty valve bag, and to deflate rubber boot 14 just prior to the removal of the filled bag from the nozzle.
- the pressure used to inflate boot 14 will typically be on the order of 3 to 5 pounds per square inch.
- a blast of high pressure air is introduced into material passage 15 of the nozzle to clear the nozzle of any particulate material remaining therein:
- the blast of high pressure air is passed through hose 46 to conduit 42.
- Hose 46 is coupled to conduit 42 by coupling 44.
- the blast of high pressure air will typically be at a pressure on the order of 100 pounds per square inch.
- low pressure air at a pressure on the order of 50 pounds per square inch is introduced between the nozzle and the valve sleeve at ports 20.
- the low pressure air is carried to ports 20 by conduits 18.
- Conduits 18 are coupled, through couplings 22, to hoses 23 which carry the low pressure air.
- the term "low pressure" is used in describing this air source simply to -differentiate it from the high pressure burst of air which is introduced into material passage 15 by conduit 42 and is used to clear material passage 15 of extraneous particulate material after a bag has been filled.
- the purpose of providing a burst of low pressure air between the nozzle and the valve sleeve into which the nozzle is inserted is to suspend any particulate product material remaining in the bag sleeve after the bag has been filled. Any such particles remaining in the valve sleeve after the bag has been filled are referred to as "dribblings".
- dribblings Any such particles remaining in the valve sleeve after the bag has been filled are referred to as "dribblings”.
- Conduit 40 is a vacuum suction passage which communicates with material passage 15. The vacuum is drawn as the nozzle is being removed from the bag, and as a result any suspended dribblings are sucked into material passage 15, and through conduit 40 to effect their removal from the bag.
- slit 54 can be analogized to a one-way valve, which allows product to enter, but not exit from the bag.
- Vacuum valve 24 includes a pneumatic actuator controlled through ports 32 and 33 which are connected to a pre- surized air source through conduits 28 and 26 respectively.
- a vacuum source can be connected at end 30 of conduit 40 through a coupling 31.
- the vacuum source can be turned on prior to the time at which it is desired to draw a vacuum through conduit 40, to enable the vacuum to reach its full operating capacity.
- pressurized air is introduced into port 28 to cause valve 24 to open.
- pressurized air is introduced through port 26 to shut valve 24 off.
- the vacuum source attached at end 30 of conduit 40 can comprise a venturi or any other well known vacuum source.
- FIGURE 4 clearly shows the nozzle opening 12 and ports 20 which supply the low pressure air externally of tube 10.
- the filling nozzle of the present invention achieves a dustless, spill-proof and leakproof bag filling operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP83110513A EP0139032A1 (fr) | 1983-10-21 | 1983-10-21 | Tuyère de remplissage pour sac à valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP83110513A EP0139032A1 (fr) | 1983-10-21 | 1983-10-21 | Tuyère de remplissage pour sac à valve |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0139032A1 true EP0139032A1 (fr) | 1985-05-02 |
Family
ID=8190767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83110513A Withdrawn EP0139032A1 (fr) | 1983-10-21 | 1983-10-21 | Tuyère de remplissage pour sac à valve |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0139032A1 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3572401A (en) * | 1969-08-22 | 1971-03-23 | California & Hawaiian Sugar | Bag filler |
US3578041A (en) * | 1968-09-23 | 1971-05-11 | Nippon Jido Fukurozumeki Mfg C | Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation |
US3886983A (en) * | 1971-06-24 | 1975-06-03 | Cementa Ab | Sack-filling device |
US4066108A (en) * | 1975-11-24 | 1978-01-03 | Black Products Company | Valve bag filler, handling and sealing system |
FR2471315A1 (fr) * | 1979-12-17 | 1981-06-19 | Sapal Plieuses Automatiques | Machine ensacheuse-peseuse pour le conditionnement de produits divises |
US4387749A (en) * | 1981-09-08 | 1983-06-14 | Champion International Corporation | Filler sleeve for use in conjunction with a bag adapted to contain a granular product |
US4391310A (en) * | 1981-09-22 | 1983-07-05 | Champion International Corporation | Bag filler spout |
-
1983
- 1983-10-21 EP EP83110513A patent/EP0139032A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3578041A (en) * | 1968-09-23 | 1971-05-11 | Nippon Jido Fukurozumeki Mfg C | Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation |
US3572401A (en) * | 1969-08-22 | 1971-03-23 | California & Hawaiian Sugar | Bag filler |
US3886983A (en) * | 1971-06-24 | 1975-06-03 | Cementa Ab | Sack-filling device |
US4066108A (en) * | 1975-11-24 | 1978-01-03 | Black Products Company | Valve bag filler, handling and sealing system |
FR2471315A1 (fr) * | 1979-12-17 | 1981-06-19 | Sapal Plieuses Automatiques | Machine ensacheuse-peseuse pour le conditionnement de produits divises |
US4387749A (en) * | 1981-09-08 | 1983-06-14 | Champion International Corporation | Filler sleeve for use in conjunction with a bag adapted to contain a granular product |
US4391310A (en) * | 1981-09-22 | 1983-07-05 | Champion International Corporation | Bag filler spout |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19851023 |
|
17Q | First examination report despatched |
Effective date: 19860411 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19860822 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LEPISTO, GEORGE J. |