WO2007030062A1 - Dispositif permettant d'eliminer par rincage un materiau en poudre au niveau d'une courroie de transporteur - Google Patents

Dispositif permettant d'eliminer par rincage un materiau en poudre au niveau d'une courroie de transporteur Download PDF

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Publication number
WO2007030062A1
WO2007030062A1 PCT/SE2006/001014 SE2006001014W WO2007030062A1 WO 2007030062 A1 WO2007030062 A1 WO 2007030062A1 SE 2006001014 W SE2006001014 W SE 2006001014W WO 2007030062 A1 WO2007030062 A1 WO 2007030062A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzles
water
conveyor belt
spilled material
spilled
Prior art date
Application number
PCT/SE2006/001014
Other languages
English (en)
Inventor
Roger Bergman
Peter Oja
Maths Jakobsson
Original Assignee
Jobab Industriteknik 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 Jobab Industriteknik Ab filed Critical Jobab Industriteknik Ab
Publication of WO2007030062A1 publication Critical patent/WO2007030062A1/fr

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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
    • B65G45/00—Lubricating, cleaning, or clearing devices
    • B65G45/10—Cleaning devices
    • B65G45/22—Cleaning devices comprising fluid applying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work

Definitions

  • the invention relates to devices, system and methods for washing away powdered material. More specifically the invention relates to devices,' systems and methods where water is used for washing.
  • powdered material is transported by means of conveyor belts.
  • industrial plants are found in the mining- and metals industry such as ore dressing plants, ore concentrating works, palletizing plants as well as loading arrangement for vehicles, trains and ships.
  • Other examples of industrial plants where powdered material is transported are plants where grain and flour are handled.
  • Other examples of such plants are building material industry, such as a cement plant, and in chemical process industry.
  • powdered material is crushed mineral, dressed ore, powdered binding agents, raw material in chemical process industry, crushed coal and grain.
  • a problem is that spillage or drop of powdered material frequently occurs at industrial plants. Spillage must be removed in order to avoid disturbances in production. Disturbances in production may occur if the spilled material starts to build a pile to such height that it reaches up to the conveyor belt, the spilled material may also cause problems for professionals or vehicles, such as trucks, to pass the area with spilled material.
  • the scraper reduces the amount of material that is stuck to the belt and reduces the amount of spilled material under the conveyor belt as stuck material gradually falls off.
  • a known problem is that such scrapers are not entirely reliable as they are worn out. Because of the mentioned reasons spilled material occurs beneath the conveyor belt, especially at the end where the belt turns. It is necessary to remove the spilled material in order to avoid disturbances in production, which is costly for the owners of the industrial plant. Disturbances in production may correspond to lost production of a value of hundred thousand Euros per hour. Due to this the conveyor belts are checked by personal that removes spilled material. A commonly used method is to place water hoses at appropriate positions or by hand direct a water hose such that the flow of water is directed towards the spilled tnaterial.
  • a problem with such methods is that water splashes up towards the conveyor belt which may cause the belt to slip.
  • Arrangements may comprise devices such as pipes from where water is sprayed towards a wash water through or similar.
  • a wash water through may limit, at least initially, the area where spilled material build up piles and enables the flow of sprayed water to be directed to the wash water through.
  • a problem with the known pipe shaped devices is that when using high water pressure water, water splashes up against the conveyor belt which may cause the belt to slip.
  • a severe problem with the pipe shaped devices is that the nozzles clog after some time.
  • Alternative terms for a nozzle are a hole or spray opening. These types of pipe based devices may comprise a number of drilled openings where in front of each hole a nozzle is mounted which diverge the water. In order to get an enough concentrated water jet which efficiently diverge at the outer nozzle a size of openings of 3-4 mm is suitable. But with such a size of the holes they clog after some time. This depends on that the process water contains a relative large amount of particles.
  • An object of the invention is to overcome the above mentioned problems and similar problems to avoid disturbances in production at an industrial plant where powdered material is spilled.
  • An aim of the invention is to provide a device for washing away spilled material in a more efficient way than previous known devices .
  • Other aim are to provide a device which spreads an even flow of water over a relative large area, can be used for a variety of application and is more reliable than previous known devices.
  • Such a device is essentially oblong and comprises a number of nozzles, where the nozzles are positioned along the oblong device.
  • the openings of the nozzles are rotated such that they are directed in a down-wards direction and a direction opposite the direction of a plane in which a resulting water flow is intended to stream from the device.
  • the device comprises an inner long side at which water from the nozzles are intended to reflect.
  • Another advantage of the invention is that it provides an even flow of water along its full length.
  • An advantage compared to previous known devices is that this even flow remains over time, due to that the nozzles do not clog even when process water containing particles of different sizes is used.
  • the device may be used in a variety of applications. It may be attached at a position where spilled material occurs, for instance at a stand underneath a conveyor belt, it may also be positioned on a floor where there is a pile of spilled material.
  • Another advantage with the invention is that it provides a more efficient washing effect than previous known devices on crushed mineral, such as dressed ore, which has a relative high density.
  • the invention further provides that less volume of water per time unit is needed to remove spilled material. This is of particular importance at industrial plants where large amount of water is pressurized with comparatively high amount of energy. At such plants, for instance performing mineral processing, the size of pumps, energy consumption of pumps, and wear of pumps and pipes drives the cost of operation. In such a plant there may be hundreds of positions where spilled material must be washed away and the improved efficiency which is a result of the invention creates a positive effect on costs at investments and operation of the plant.
  • Another advantage with the device is that as it comprise a cover, splash of water in unwanted directions is avoided, such as towards a conveyor belt.
  • the energy of a water jet from a nozzle is diverged into an even flow before it hits the spilled material. This should be compared with the previous known devices where the water jet from an outer nozzle first hits the spilled material or the ground where the spilled material has landed, as that result in a greater risk of water splashing.
  • Splash of water on the underside of the conveyor belt often causes the belt to slip against roles it runs upon which causes an uneven on- and un-loading of the conveyor belt and further increase the risk of disturbances in production.
  • Another object of the invention is to provide a system to wash away spilled material that falls off a conveyor belt where the spilled material may be dressed ore and the water that the system utilizes is process water.
  • a system comprising a plate where spilled material falls, and a device which is essentially oblong.
  • the system is characterized in that the device comprises a number of nozzles ⁇ and the nozzles are positioned in the length of the inner part of the device and further that the nozzles are rotated in a down-wards direction and in a direction opposite a plane in which a resulting flow of water is intended to stream out of the device. The resulting stream of water is intended to stream along an area of the plate. Further characteristics of the system are shown in the patent claims .
  • the device is attached at the plate or above the plate at the end of a conveyor belt.
  • the system may also be configured such that the device is movable from one position under the conveyor belt to another position under the conveyor belt.
  • the device comprises means of attachment, such as a socket or clutch at each side of the device. It is an advantage if the means of attachment are made such that the device may be placed on different positions along the plate.
  • Figure 1 shows an example of a device according to the invention in a view from above. Water is evenly spread on the area from where spilled material is to be washed away.
  • Figure 2 is a device seen from the side. Water jets from the nozzles reflect against a back wall in the inner of the device.
  • Figure 3 is a view of the device seen from a position in front of the device. The water from each of the nozzles overlaps each other after being reflected against the back wall.
  • Figure 4 is an example of an element similar to a pipe comprising the nozzles.
  • Figure 5 is a simplified figure of a part of a plant where the invention is used.
  • the invention in figure 5, the invention is used in a position under a conveyor belt.
  • Figure 6 is a system according to the invention comprising a plate on which spilled material falls down and the device which efficiently washes away the powdered spilled material, such as dressed ore.
  • Figure 1 is an example of a device 1 according to the invention seen from a position in front of the device.
  • Figure 2 and 3 shows that water is spread evenly 6 over the area 12 from where spilled material is to be washed away. The water from each of the nozzles 2 reflects on the inner wall 5 of the device 1.
  • Figure 1 further shows that the device's upper part 7 is covered, wherein upwards splash of water is avoided. Water that hits the underside of the conveyor belt may otherwise cause the belt to start to slip.
  • a device 1 according to the invention may in an industrial plant be positioned at any of the positions where spilled material occurs. The device may for instance be positioned on a floor.
  • Figure 1 further shows that a device 1 according to the invention comprises some type of arrangement 14 for connecting it to a system of feed water.
  • the arrangement 14 is preferably a joint of pipe of a de-facto standard.
  • the device 1 may be connected to an already installed water hose at the plant, which in turn is connected to a water tap of the system of feed water.
  • the device 1 comprise more than one arrangement for connection 14. It may be suitable to configure the device with arrangements for connection 14 on both short sides of the device 1.
  • a device 1 according to the invention has a significant greater capability of avoiding clogging of nuzzles compared with previous known devices.
  • Figure 2 shows a cross section of the device 1 seen from the side.
  • Figure 2 shows an embodiment where the backside 5 has a round surface.
  • the backside is preferably made out of a plate or similar.
  • Figure 2 further shows that the water jets 9 from the nozzles reflect and diverge against an inner back wall 5 of the device 1.
  • the nozzles 2 are positioned along the length of the inner element of the device 1.
  • the openings of the nuzzles are directed in a direction 3 mainly in an opposite direction 4 of the plane in which the flow of water leaves the device 1, after being reflected against the inner back wall 5.
  • the nozzles are directed backwards 3 in comparison to the direction the water is intended to flow out of the device.
  • the nozzles 2 are also directed in the vertical plane, and that direction is diagonally downwards.
  • the nozzles 2 are arranged in an oblong element 8 which is shown in figure 4. It is an advantage if the oblong element is shaped as a round pipe.
  • the spread pattern of forward flowing water 4 depends on a number of parameters, such as water pressure, number of nozzles 2 of the oblong element 8, the shape of the nozzles 2 and the position at the back wall 5 where the water jets from each of the nozzles 2 hits.
  • the oblong element is preferably possible to rotate such it is possible to adjust the height h where the water hits the back wall. Adjustment is typically made at installation or when moving the device 1.
  • the height h influence the spread pattern of the forward flowing water 4, which is a result of interference of the reflecting water jets 6.
  • the inner back wall 5 and the upper part 6 may be manufactured in one piece of a plate of stainless steel.
  • the short sides 15 and 16 are in that embodiment preferably also made of plate. The sides may be welded against the edges of the back wall and the upper part 6.
  • the sides 15 and 16 preferably comprise sockets for the oblong element 8. In the embodiment where the oblong element 8 is a round pipe the sockets may have a round shape and may be drilled.
  • the lower part 17 of the device is in an alternative embodiment flat formed, which enables the device to be placed on a floor.
  • FIG 5 is a simplified figure of a section of an industrial plant where the invention is used.
  • a system 10 according to the invention is used at a position under a conveyor belt 11.
  • the system which is shown in figure 5 and 6 is particularly useful to wash away spilled material 20 which falls off the conveyor belt 11 where the spilled material comprise of powdered mineral, such as dressed ore, or other powdered material with a relative high density. Powdered material is loaded 19a at one end of the conveyor belt 11. At the other end the powdered material is unloaded 19b.
  • the system comprises a plate 12 where spilled material 20 falls.
  • the system further comprises the previous mentioned device 1.
  • Such a plate 12 may have folded edges such as is seen in figure 6.
  • An alternative term for such a plate is a wash-water through.
  • a floor drain 18 or other type of outlet 18' is positioned at the end of the plate 12.
  • the system 10 is suitable to be positioned at the end of the conveyor belt 11 where the material is unloaded. Despite that there is typically a scraper at the end of the conveyor belt a certain amount of the powdered material sticks to the surface of the belt. The powdered material gradually falls off from the belt when it travels face down.
  • the device 1 comprise an oblong element 8, which is shown in figure 4.
  • the oblong element comprises the nozzles which may be made as holes 2a.
  • the holes have a diameter (d) greater than 5 mm.
  • a suitable diameter is 8 mm.
  • the choice of diameter (d) of the holes depends on expected water pressure of the process water but also the occurrence of particles in the water. Compared with previous known devices and systems the invention provides an improved availability over time as a the nozzles of the device can be made with a greater diameter (d) than with previous known devices at a certain water pressure and a certain amount of particles in a volume of the process water.
  • the device 1 is movable.
  • Figure 5 indicates a system where the device can be positioned at a number of positions 15, 16 under the conveyor belt 11.
  • Figure 6 shows that the plate 12, or wash-water through, may comprise folded edges 18 in order to restrict the flow of water. These edges 18 can be used in order to position the device 1.
  • the device 1 may for instance comprise brackets, on each short end of the device 1, which corresponds to sockets in the edges 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

Cette invention concerne un dispositif (1) qui élimine efficacement par rinçage un matériau en poudre dispersé d'une zone relativement grande. Le matériau en poudre peut tomber d'une courroie de transporteur. Le dispositif (1) est particulièrement adapté à une utilisation dans des installations industrielles dans lesquelles un minéral en poudre est transporté, tel qu'un minerai concentré. Le dispositif (1) comporte une pluralité de buses (2) fixées sur la longueur d'un élément oblong du dispositif (1). Des jets d'eau sortant des buses (2) sont dirigés contre une paroi arrière intérieure (5). Ce dispositif (1) présente l'avantage d'améliorer la disponibilité de production de l'installation industrielle comparé à des dispositifs, systèmes et procédés connus jusqu'à présent.
PCT/SE2006/001014 2005-09-05 2006-09-05 Dispositif permettant d'eliminer par rincage un materiau en poudre au niveau d'une courroie de transporteur WO2007030062A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0501951A SE0501951L (sv) 2005-09-05 2005-09-05 En anordning för bortspolning av finfördelat material vid transportband
SESE0501951-8 2005-09-05

Publications (1)

Publication Number Publication Date
WO2007030062A1 true WO2007030062A1 (fr) 2007-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/001014 WO2007030062A1 (fr) 2005-09-05 2006-09-05 Dispositif permettant d'eliminer par rincage un materiau en poudre au niveau d'une courroie de transporteur

Country Status (2)

Country Link
SE (1) SE0501951L (fr)
WO (1) WO2007030062A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017046165A1 (fr) * 2015-09-17 2017-03-23 Supratec Dispositif de nettoyage de bande transporteuse
JP2020037089A (ja) * 2018-09-05 2020-03-12 増幸産業株式会社 洗浄機能付き摩砕機
JP2020037487A (ja) * 2018-08-29 2020-03-12 日本製鉄株式会社 洗浄装置
JP2021030174A (ja) * 2019-08-27 2021-03-01 日本製鉄株式会社 洗浄方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2071403A7 (fr) * 1969-12-29 1971-09-17 Europ Manutention
FR2286080A1 (fr) * 1974-09-25 1976-04-23 Mascia Fausto Dispositif de nettoyage hydropneumatique pour courroies transporteuses
DE8907915U1 (de) * 1989-06-29 1989-08-31 Holstein Und Kappert Ag, 4600 Dortmund Transportvorrichtung für Gefäße
AU2003213497A1 (en) * 2002-07-17 2004-02-05 Cadbury Schweppes Proprietary Limited Belt cleaner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2071403A7 (fr) * 1969-12-29 1971-09-17 Europ Manutention
FR2286080A1 (fr) * 1974-09-25 1976-04-23 Mascia Fausto Dispositif de nettoyage hydropneumatique pour courroies transporteuses
DE8907915U1 (de) * 1989-06-29 1989-08-31 Holstein Und Kappert Ag, 4600 Dortmund Transportvorrichtung für Gefäße
AU2003213497A1 (en) * 2002-07-17 2004-02-05 Cadbury Schweppes Proprietary Limited Belt cleaner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017046165A1 (fr) * 2015-09-17 2017-03-23 Supratec Dispositif de nettoyage de bande transporteuse
FR3041331A1 (fr) * 2015-09-17 2017-03-24 Supratec Dispositif de nettoyage de bande transporteuse.
JP2020037487A (ja) * 2018-08-29 2020-03-12 日本製鉄株式会社 洗浄装置
JP7260784B2 (ja) 2018-08-29 2023-04-19 日本製鉄株式会社 洗浄装置
JP2020037089A (ja) * 2018-09-05 2020-03-12 増幸産業株式会社 洗浄機能付き摩砕機
JP7101984B2 (ja) 2018-09-05 2022-07-19 増幸産業株式会社 洗浄機能付き摩砕機
JP2021030174A (ja) * 2019-08-27 2021-03-01 日本製鉄株式会社 洗浄方法
JP7280507B2 (ja) 2019-08-27 2023-05-24 日本製鉄株式会社 洗浄方法

Also Published As

Publication number Publication date
SE527682C2 (sv) 2006-05-09
SE0501951L (sv) 2006-05-09

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