EP1544132A2 - Conteneur avec un dispositif de vidange, en particulier pour pastilles combustibles - Google Patents

Conteneur avec un dispositif de vidange, en particulier pour pastilles combustibles Download PDF

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Publication number
EP1544132A2
EP1544132A2 EP04106179A EP04106179A EP1544132A2 EP 1544132 A2 EP1544132 A2 EP 1544132A2 EP 04106179 A EP04106179 A EP 04106179A EP 04106179 A EP04106179 A EP 04106179A EP 1544132 A2 EP1544132 A2 EP 1544132A2
Authority
EP
European Patent Office
Prior art keywords
container
main sheet
sheet
emptying
walls
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Withdrawn
Application number
EP04106179A
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German (de)
English (en)
Other versions
EP1544132A3 (fr
EP1544132A8 (fr
Inventor
Dennis Karlsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denson-Produkter AB
Original Assignee
Denson-Produkter AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denson-Produkter AB filed Critical Denson-Produkter AB
Publication of EP1544132A2 publication Critical patent/EP1544132A2/fr
Publication of EP1544132A8 publication Critical patent/EP1544132A8/fr
Publication of EP1544132A3 publication Critical patent/EP1544132A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/10—Large containers rigid parallelepipedic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/58—Large containers characterised by means facilitating filling or emptying by displacement of walls
    • B65D88/60—Large containers characterised by means facilitating filling or emptying by displacement of walls of internal walls

Definitions

  • the invention is a container with an emptying device for storing and emptying of flowing, granular dry products such as pellets.
  • the invention is particularly intended for use as a prefabricated container (L) for fuel pellets (P) and can be built in situ in restricted spaces such as boiler rooms (R) or the like (see Fig. 1a ).
  • the invention belongs to the category pellet stores.
  • pellets (P) are fed by means of a screw (S) from the container (L) to the burner (B).
  • S a screw
  • M the area where the screw intake is positioned.
  • the container is in the shape of a box like in the Figure - to take up as little space as possible in the room (R) - there will finally be pellets only along the edges and in the corners of the container and there will no pellets be left that the screw can feed.
  • the simple pellet stores are built with an inclined bottom like a funnel with the feeding area adjacent to the spout.
  • FIG. 1b One half of such a store is shown in two variants in Figs 1b, 1c .
  • An inclined plane having the width (y) and the angle of inclination (b) is positioned along one of the walls.
  • An inclined screw i.e. the type shown in Fig. 1a
  • a small width (y) according to Fig. 1b
  • M small area
  • (x) half the length of the transverse wall of the container, must then be great.
  • a bottom screw which is positioned horizontally along the bottom and has a plurality of feed openings, i.e.
  • the length (x) can be small according to Fig. 1c .
  • An advantage of a short transverse wall, i.e. a small (x), is that the useless volume under the inclined plane will be relatively small. In order to further manage volume losses, stores with a slantable bottom have been developed (see the next paragraph).
  • a further problem involves easy and reliable emptying.
  • the weight of the pellets is a particularly important parameter - both with regard to the mechanical construction and with regard to the fact that angling occurs by manual power.
  • the store should hold at least 5 cubic meters since this is the smallest volume to be delivered in bulk (by a lorry blow-feeding pellets through a hose). This corresponds to approx. 3 tonnes.
  • bottom screws are generally more expensive than inclined screws. An inclined screw may even be better since, in general, it cannot jam due to pellets getting stuck between the screw and the tube, which is a known problem of bottom screws.
  • Fig. 2 Four main types of container with a slantable bottom for emptying of flowing products are illustrated in Fig. 2 : the bottom is slanted by raising a cloth on the sides, by raising a sheet, by gathering the waist of a bag together, or by injecting air under a cloth (or into a bag).
  • US Patent 4,541,765 has a winch arranged on the outside of the container (essentially according to Fig. 2a ).
  • the device of DE 1 531 920 works according to the same principle, but the winch is replaced by weights. The weights are suspended freely on the outside of the container and thus raise the cloth.
  • Patent Specification US 2,829,803 contains an example of a device which essentially works according to Fig. 2b. In particular each lifting jack (103) for inclining the associated bottom sheet (102') is positioned under the container. The function of the product "Pellistore” is based on a bag (102) being pulled together essentially as shown in Fig. 2c , as far as we understand.
  • FR Patent 2,512,790 discloses a device according to Fig. 2d , where the bottom sheet (102') can be inclined by means of compressed air (103).
  • a particularly compact container is obtained, since the mechanism (for angling the bottom of the container) can be placed inside the container (in contrast to the mechanisms that are shown in Figs 2a, 2b ).
  • the mechanism can also be made quite manual: a compressed air apparatus as shown in Fig. 2c or another power source than manual power is not required.
  • the holes for filling (201), venting (202) and screw feeding (203) can easily be placed where it suits best in every room - the holes can be placed on any side and do not require particular expert knowledge, special tools or special sets of connection. As far as we understand, such individual adaptation is easier to perform, compared with a store whose emptying mechanism uses a cloth like in Fig. 2c .
  • FIG. 3 One embodiment is shown in Fig. 3 .
  • the container with the roof removed and part of the walls cut away is shown in Fig. 3a .
  • the emptying device is shown separately in Fig. 3b .
  • the container (see Fig. 3a ) is limited by sheets of plywood consisting of a bottom (81), two transverse walls (82), two longitudinal walls (83) and a roof (84). These sheets are mounted on a body consisting of five U-shaped frames made of joists (71). Strips (72, 73) help to seal the container.
  • the emptying device (separately drawn in Fig. 3b ) is divided into two active parts, each part comprising, inter alia, one sheet of plywood (1), another sheet of plywood (2), a shaft (3) and two wires (4).
  • the sheet (1) - referred to as "main sheet” - abuts against, and is articulated to, blocks (5) fixed to the bottom sheet (81).
  • the main sheet (1) is inclined by wires (4) being wound onto a shaft (3).
  • the sheet (2) - referred to as "side sheet” - is articulated by a joint (6) to the main sheet (1).
  • the side sheet (2) is pressed against the associated transverse wall (82) by its own weight and by the pellets.
  • Angle bars (61) prevent the side sheet from falling flat on the main sheet when the container is empty.
  • the shafts (3) are rotatable in the support bearings (31).
  • a support bearing may, like in this case, consist of a short pipe welded to a plate which can be screwed to the joists (71).
  • a simpler solution is support bearings in the form of holes through the joists with some kind of plastic bushing or the like in the holes. It has been found that, for instance, joists that are only 40 mm thick will work.
  • a blocking device is indicated by the symbol (9).
  • it consists of a ratchet (91) fixed to the shaft (3), a catch (92) fixed to the outside of the support bearing (31) or on the outside of the joist (71), and a cover (93) that covers the ratchet.
  • wires Only one wire is required for each main sheet (although a plurality of wires may, of course, be used). A single wire may extend in the form of a "U”, down to the main sheet and under the same, along a flat bar or the like (41) that reinforces the sheet, and then up again.
  • the device is used in the following way.
  • the rod (33) has a sleeve (32') which is fastened over one of the shaft nuts (32).
  • the wires are wound onto the shaft (3), resulting in the main sheet (1) being raised at an angle.
  • the side sheet (2) is carried along, scraping over the transverse wall (82).
  • the main sheet can be gradually slanted up to a certain maximum position. If the rod (33) is rotated further, the main sheet can be lifted from the bottom. This facilitates removal of pellet dust collected under the sheets (1, 2).
  • the joint device (5) may need to be attached to the main sheet as well (and not only attached to the bottom like in the embodiment). To be able to lift the main sheet from the bottom in such a case, the joint device may be provided with an opening lock of some kind, such as lockable wires or chains or other prior-art devices.
  • Holes are made in the sheets of plywood for supplying pellets, for ventilation and for feeding pellets to the screw, for instance in the positions designated (201, 202, 203) in Fig. 1 .
  • the holes can be positioned on any side of the container including the roof.
  • the container may also be provided with a manhole cover for access (cleaning, manual redistribution of the very last amount of pellets, and repair).
  • the container may also suitably be provided with a window for inspection of the pellet level. The window can be positioned in the manhole cover for instance.
  • the emptying device comprises at least one active unit, shown in three variants in Fig. 4a , Fig. 4b and Fig. 4c .
  • An active unit comprises two sheets that are articulated to each other: a main sheet (1) and a side sheet (2). It also comprises one or more couplings (4), preferably wires or chains, that are to be wound onto a shaft (3). The couplings are attached to the main sheet (1) adjacent to the joint (6) between the sheets (1) and (2). It is to be noted that the main sheet need not be in one piece (like in Figs 4a, 4c ) but may also be articulated in two (like in Fig. 4b ) or more units. It is also to be noted that the main sheet, except being articulated to the side sheet, can also be movable along the same like in Fig. 4c .
  • Main Sheet The function of the main sheet is, of course, understood to force the heap of pellets (P) to be inclined more than the angle of repose (a), which then results in the heap becoming unstable and pellets falling down to the feeding area (M) until the angle of repose has been taken once more.
  • the shaft is supported by some kind of bearings - two examples have been described, but exactly how this is done is not critical to the function of the invention.
  • the shaft can be rotated by manual power using some kind of rod extending radially from the shaft (for instance like the rod (33) in Fig. 3 ), but the rotation of the shaft can, of course, also be driven in some other way.
  • the shaft can be provided with some kind of blocking mechanism which locks the shaft when the power rotating the shaft ceases.
  • One example has been given (see (9) in Fig. 3) , but other prior-art techniques can also be employed.
  • the characteristic features of the container are as follows. It is basically necessary for the two walls (83) to be parallel and flat in order to seal against the edges of the sheets (1, 2).
  • the walls (83) have been referred to as longitudinal walls, but here they are more generally called “transverse walls” to indicate that they are perpendicular to the sheets (1, 2), and that (83) in general need not necessarily be longer than the walls (82).
  • the "longitudinal walls” (82) must be flat to seal against the side sheets (2).
  • the fact that the walls are “longitudinal” refers to their positioning along the inclined plane which consists of the sheets (1, 2).
  • Fig. 3 An example of how the just described seal between the walls and the sheets can easily be performed in a lasting manner is illustrated in Fig. 3 .
  • the following may also be noted.
  • sheets of plywood were mentioned, but of course other sheets may also be used.
  • the sheets cover the body on the inside, thus forming a gap both under the container and outside each transverse wall.
  • This has, for instance, the advantage of ensuring a ventilating function between the floor of the room and the container and between the walls of the room and the container, which prevents diffusion of moisture (or creeping moisture).
  • the construction of the body is, of course, limited by strength.
  • a sufficiently strong container can be obtained, for example, with a body made of joists.
  • use is especially made of five U-shaped frames joined by suitably dimensioned joists.
  • the number need not be five but may be larger or smaller depending on the size of the container and the dimension of the joists.
  • the U-shaped frames can be delivered assembled by nail plate joints or the like.
  • the joists (71) create a large surface in the joints between the side walls (82, 83); the strips (72, 73) create a large surface in the joints between the bottom (81) and the side walls on the one hand and between the roof (84) and the side walls on the other hand.
  • the invention relates to the containers for pellets (or in general whole pieces, more or less large, of a material or a product), which are provided with an emptying device.
  • the emptying device consists of active units, at least one, but preferably two, which can be moved between a lowered position and different degrees of raised positions.
  • a common feature is also that there is a limited area (M), or a small number of such areas, close to the bottom of the container, from which the contents are emptied.
  • the transverse walls are in substantial parts flat and parallel.
  • such an active unit comprises at least the components main sheet (1), side sheet (2), rotary shaft (3) and coupling (4): these have the properties, and cooperate with each other and with the container and with the pellets, as will now be described.
  • the main sheet (1) is articulated by a joint (5) at the bottom of the container on an axis which is perpendicular to the transverse walls and positioned close to the emptying area (M).
  • the main sheet is further characterised in that it has a width equalling the distance between the transverse walls and a length approximately equalling the distance from the joint (5) to a longitudinal wall.
  • the side sheet (2) is articulated by a joint (6) to the rear edge of the main sheet (1) on an axis perpendicular to the transverse walls. Also the side sheet has a width equalling the distance between the transverse walls.
  • the rotary shaft (3) extends between two of the walls, suitably, but not necessarily, between the transverse walls and perpendicular to the same.
  • Each coupling (4), an active unit may have one or more couplings, is characterised in that it extends from the rotary shaft down to the main sheet close to the joint to the side sheet.
  • the coupling is wound onto the shaft, resulting first in the main sheet being slanted up from the lowered position in order to make pellets fall down to the emptying area and, second, in the side sheet, by way of the joint (6), being carried along by the main sheet to prevent pellets from falling down under the main sheet.
  • the latter also determines the minimum length of the side sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP04106179A 2003-12-01 2004-11-30 Conteneur avec un dispositif de vidange, en particulier pour pastilles combustibles Withdrawn EP1544132A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0303216 2003-12-01
SE0303216A SE525237C2 (sv) 2003-12-01 2003-12-01 Behållare med tömningsanordning, särskilt för bränslepellets
SE3032166 2003-12-01

Publications (3)

Publication Number Publication Date
EP1544132A2 true EP1544132A2 (fr) 2005-06-22
EP1544132A8 EP1544132A8 (fr) 2005-10-19
EP1544132A3 EP1544132A3 (fr) 2006-02-22

Family

ID=29729222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106179A Withdrawn EP1544132A3 (fr) 2003-12-01 2004-11-30 Conteneur avec un dispositif de vidange, en particulier pour pastilles combustibles

Country Status (2)

Country Link
EP (1) EP1544132A3 (fr)
SE (1) SE525237C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1947031A1 (fr) * 2007-01-18 2008-07-23 CLAAS Selbstfahrende Erntemaschinen Dispositif d'agrandissement pour un récipient de matières en vrac
DE102008047900A1 (de) * 2008-09-19 2010-05-12 Renergie Systeme Gmbh & Co. Kg Vorrichtung für die Lagerung von Schüttgut
NL1038751C2 (nl) * 2011-04-13 2012-10-16 Taks Tuinbouwtechniek B V Containersysteem.
EP2937145A1 (fr) 2014-04-24 2015-10-28 Robatech AG Dispositif de transport d'un fluide à fines particules
US10399765B2 (en) * 2016-01-20 2019-09-03 Transload Equipment, LLC Systems and methods for safely transporting granular material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829803A (en) * 1954-11-22 1958-04-08 Paton Holdings Ltd Transportation and storage hopper
US4317410A (en) * 1978-08-16 1982-03-02 Achille Prunet Device for transforming an enclosure or container into a self-evacuating container and container comprising such a device
FR2512790A1 (fr) * 1981-09-11 1983-03-18 Nodet Gougis Tremie de faible hauteur pour stockage de matieres granulaires
DE3342281A1 (de) * 1983-11-23 1985-06-05 Drehtainer Container-Technik GmbH & Co, 2000 Hamburg Container mit einem laderaum fuer stueck- und schuettgut

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1947031A1 (fr) * 2007-01-18 2008-07-23 CLAAS Selbstfahrende Erntemaschinen Dispositif d'agrandissement pour un récipient de matières en vrac
DE102008047900A1 (de) * 2008-09-19 2010-05-12 Renergie Systeme Gmbh & Co. Kg Vorrichtung für die Lagerung von Schüttgut
DE102008047900B4 (de) * 2008-09-19 2012-02-02 Renergie Systeme Gmbh & Co. Kg Vorrichtung für die Lagerung von Schüttgut
NL1038751C2 (nl) * 2011-04-13 2012-10-16 Taks Tuinbouwtechniek B V Containersysteem.
EP2937145A1 (fr) 2014-04-24 2015-10-28 Robatech AG Dispositif de transport d'un fluide à fines particules
US9643776B2 (en) 2014-04-24 2017-05-09 Robatech Ag Device for conveying a fine-particle medium
US10399765B2 (en) * 2016-01-20 2019-09-03 Transload Equipment, LLC Systems and methods for safely transporting granular material

Also Published As

Publication number Publication date
SE0303216L (sv) 2005-01-11
SE525237C2 (sv) 2005-01-11
EP1544132A3 (fr) 2006-02-22
EP1544132A8 (fr) 2005-10-19
SE0303216D0 (sv) 2003-12-01

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