WO1990015766A1 - Device for feeding out bulk material - Google Patents
Device for feeding out bulk material Download PDFInfo
- Publication number
- WO1990015766A1 WO1990015766A1 PCT/SE1990/000217 SE9000217W WO9015766A1 WO 1990015766 A1 WO1990015766 A1 WO 1990015766A1 SE 9000217 W SE9000217 W SE 9000217W WO 9015766 A1 WO9015766 A1 WO 9015766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- containers
- drum
- sections
- rotatable
- ratio
- Prior art date
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
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
Definitions
- the present invention relates to a device for a common feed out of from separate containers in a desire mixing ratio, the outlets of the containers being placed abo separate sections of an essentially horizontal conveying screw.
- NO-C-83 991 shows an example of this technique.
- the value of the par screw is limited, since it can not be made very long with a maintained reasonable thickness.
- it is useful only in smaller units, e.g. for the use described in NO-C-83 991, namely mobile concrete mixers.
- the object of the present invention is to suggest an improv device of the type set forth in the preamble of the patent claim, which does not have the drawbacks, which devices know in the art have.
- a particular object is to suggest a device which can feed out and homogenize the bulk materials from s parate containers in a certain mixing ratio with a high acc racy and simultaneously provide a comparatively high feedin capacity.
- An additional object is to, in an efficient way, able to vary the mixing ratio without also lowering the fee ding capacity.
- FIG. 1 is a perspective view showing the basic principle of the invention
- Fig. 2 is a sectional side view of the discharge device as well as the containers according to a first embodiment; and Fig. 3 shows in a side view a second embodiment of the dis- charge device.
- a first container is des nated 1 and a second container designated 2.
- Containers 1 a 2 respectively contain a first bulk material 3 and a seco bulk material 4 respectively, the latter to be mixed with first bulk material in a certain desired mixing proportio Between containers 1 and 2 there is a partition 5.
- F der tube 6 comprises, according to the pricinples known th i.a. this patent specification, a cylindrical drum 7, de ⁇ signed to rotate about its axis 8, and inside drum 7 a co veying screw 9, coaxially disposed in relation to the dru and its direction of rotation being opposite to the direc tion of rotation of drum 7.
- Drum 7 is rotated by means of motor 10 and screw 9 is rotated by means of a motor 11, F 2.
- Feeder tube 6 is, as has been mentioned, disposed in t bottom of containers 1 and 2 and surrounded by bulk mater
- drum 7 and conveying screw 9 When drum 7 and conveying screw 9 are rotated in opposite rections,bulk materials 3 and 4 fall, into drum 7 through slits 14 along the entire length L.
- Drum 7 and screw 9 are rotated with such a speed, that the material which is fed to drum 7 will not fill.-.; it to a greater extent than to a tain part of its cross-section. Consequently, the particle in bulk materials 3 and 4 are not stopped by materials, wh have already been fed into drum 7, but are able to fall th slits 14 with the same ease regardless where they are loca ted along length L of the drum.
- the bulk materia is allowed to be fed into the drum completely uniformly at different locations along length Ll of first container 1 a along length L2 of second container 2 respectively. Howeve the loading speed of the two bulk materials 3 and 4 can be different, depending on the different properties and parti sizes of materials 3 and 4.
- partition 5 preferably is disposed in such a way that it can be located in different positions along length i.e. for an adjustment of the ratio L-./L-. Through a varia tion of the ratio L 1 /L_ the mixing ratio.in the discharged material 18 is adjusted.
- Fig. 3 shows another particular embodiment of the inventio
- partition 5 preferably can be placed in different positio which, according to this embodiment, can be used to roughl adjust the mixing ratio in the discharged bulk material 18
- the novel feature of this embodiment is that the drum has subdivided into two sections 7A and 7B. The two sections 7 and 7B can be rotated independently of each other but are nected to each other through a race bearing 20. Race bear 20 is according to Fig.
- First drum section 7A is driven by means of a moto and second drum section 7B by means of a motor 10.
- Convey screw 9 s common to the two drum sections 7A and 7B and tends through the two sections. It is driven by motor 11.
- drum sections 7A and 7B resp tively can be rotated with different and varying rotation speeds, and in this way the loading speed of bulk materials 3 and 4 to the assembled drum 7A/7B can be adjusted.
- This can be utilized to fineadjust the mixing ratio, but it can also be used as the only adjustment instrument, in case par tition 5 is fixedly disposed between containers 1 and 2.
- Th possibility of influencing the mixing ratio through a varia tion of the absolute and/or relative rotation speeds of dru sections 7A and 7B is of course particularly advantageous, since this adjustment can be done, when containers 1 and 2 already have been filled with bulk materials 3 and 4 respec tively, whereas it is very difficult or impossible to move partition 5 in this situation.
- holes/slits 14 are evenly distr ubbed on the surface of the drum.
- the hol non-uniformly, e.g. use more holes per surface unit in one section of the drum in order to increase the feeding into t section.
- the drum can also be disposed in such a way, known per se, that it is laterally movable, the drum digging its path through the bulk material.
- the present invention is not limited to the de ribed embodiments, which merely serve as two illustrated em bodiments within the scope of protection of the inventive idea.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Accessories For Mixers (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8902138A SE8902138L (en) | 1989-06-14 | 1989-06-14 | TUB FEEDERS FOR MIXING DIFFERENT MATERIALS |
SE8902138-0 | 1989-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990015766A1 true WO1990015766A1 (en) | 1990-12-27 |
Family
ID=20376276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1990/000217 WO1990015766A1 (en) | 1989-06-14 | 1990-04-03 | Device for feeding out bulk material |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0477202A1 (en) |
AU (1) | AU628985B2 (en) |
SE (1) | SE8902138L (en) |
WO (1) | WO1990015766A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995021784A1 (en) * | 1994-02-14 | 1995-08-17 | Norsk Hydro A.S | Device for uniform draw-down, homogenization and continuous mixing of bulk solids from silos and stockpiles |
EP2010822A1 (en) * | 2006-04-21 | 2009-01-07 | Lidani AB | Device at a container for combustible goods arranged to be transported by a conveyor from the container to subsequent management |
WO2014163567A1 (en) * | 2013-04-03 | 2014-10-09 | Main Engineering Ab | Feeder tube and method relating to a feeder tube |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1200788B (en) * | 1963-11-23 | 1965-09-16 | Bayer Ag | Continuously working mixing and reaction machine |
FR2171055A2 (en) * | 1972-02-10 | 1973-09-21 | Hindermann Erich | Bulk materials mixer - with dosing device for low proportion additive |
SE404684B (en) * | 1976-10-26 | 1978-10-23 | Forsberg G L K | DEVICE FOR EXTRACTING MASSAGE FROM A WAREHOUSE |
-
1989
- 1989-06-14 SE SE8902138A patent/SE8902138L/en not_active Application Discontinuation
-
1990
- 1990-04-03 WO PCT/SE1990/000217 patent/WO1990015766A1/en not_active Application Discontinuation
- 1990-04-03 EP EP19900908142 patent/EP0477202A1/en not_active Withdrawn
- 1990-04-03 AU AU56615/90A patent/AU628985B2/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1200788B (en) * | 1963-11-23 | 1965-09-16 | Bayer Ag | Continuously working mixing and reaction machine |
FR2171055A2 (en) * | 1972-02-10 | 1973-09-21 | Hindermann Erich | Bulk materials mixer - with dosing device for low proportion additive |
SE404684B (en) * | 1976-10-26 | 1978-10-23 | Forsberg G L K | DEVICE FOR EXTRACTING MASSAGE FROM A WAREHOUSE |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995021784A1 (en) * | 1994-02-14 | 1995-08-17 | Norsk Hydro A.S | Device for uniform draw-down, homogenization and continuous mixing of bulk solids from silos and stockpiles |
EP2010822A1 (en) * | 2006-04-21 | 2009-01-07 | Lidani AB | Device at a container for combustible goods arranged to be transported by a conveyor from the container to subsequent management |
EP2010822A4 (en) * | 2006-04-21 | 2012-08-08 | Lidani Ab | Device at a container for combustible goods arranged to be transported by a conveyor from the container to subsequent management |
WO2014163567A1 (en) * | 2013-04-03 | 2014-10-09 | Main Engineering Ab | Feeder tube and method relating to a feeder tube |
EP2981490A4 (en) * | 2013-04-03 | 2016-11-23 | Main Engineering Ab | Feeder tube and method relating to a feeder tube |
Also Published As
Publication number | Publication date |
---|---|
EP0477202A1 (en) | 1992-04-01 |
SE8902138D0 (en) | 1989-06-14 |
AU628985B2 (en) | 1992-09-24 |
AU5661590A (en) | 1991-01-08 |
SE8902138L (en) | 1990-12-15 |
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