EP3502281B1 - Dispositif de broyage et de mélange - Google Patents

Dispositif de broyage et de mélange Download PDF

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Publication number
EP3502281B1
EP3502281B1 EP18000973.0A EP18000973A EP3502281B1 EP 3502281 B1 EP3502281 B1 EP 3502281B1 EP 18000973 A EP18000973 A EP 18000973A EP 3502281 B1 EP3502281 B1 EP 3502281B1
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EP
European Patent Office
Prior art keywords
mixing
product
machine housing
size reduction
accordance
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.)
Active
Application number
EP18000973.0A
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German (de)
English (en)
Other versions
EP3502281A1 (fr
Inventor
Stefano L. Zampini
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.)
Hosokawa Alpine AG
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Hosokawa Alpine AG
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Publication date
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Publication of EP3502281A1 publication Critical patent/EP3502281A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/22—Disintegrating by mills having rotary beater elements ; Hammer mills with intermeshing pins ; Pin Disk Mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B45/00—Cutting machines specially adapted for sugar
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B50/00—Sugar products, e.g. powdered, lump or liquid sugar; Working-up of sugar

Definitions

  • the invention relates to a device for comminuting and mixing one or more products.
  • a large number of methods are known for maintaining the flowability of fine powders after comminution.
  • calcium carbonate is ground in a pin mill with the addition of stearic acid.
  • the ground particles are coated with a hydrophobic layer.
  • the addition of flow aids is also known, in which case the flow aid does not form an intensive bond with the product.
  • An example is the addition of corn starch to ground sugar.
  • Other methods use high-energy mixers.
  • the surfaces are "reactivated” by means of a particularly high shearing force, which results in optimum mixing.
  • Still other processes are aimed at the "passivation" of the surfaces that are newly created during the comminution, i.e. active surfaces.
  • sugar is ground in a conditioned atmosphere with increased humidity.
  • the DE 101 01 464 C2 discloses a plant for the production of icing sugar, in which, after grinding, the icing sugar is conditioned in a collection container.
  • the collection container is charged with conditioned air.
  • the aim here is to transport away the amount of water released after recrystallization so that it does not remain in the heap, dissolve the icing sugar crystals and cause the icing sugar to harden or clump together as it dries out.
  • steam is blown into the mill or into the conveying line to the collecting tank, so that the recrystallization time is shortened and the recrystallization in the collecting tank is completed.
  • Compressed air jets hit the collection container from below in order to loosen the icing sugar so that the excess moisture can escape from the icing sugar heap.
  • the EP 0838529 A2 discloses a method for recrystallizing sugar.
  • conditioning takes place during the grinding of the sugar.
  • the mill is supplied with sugar via a feed and at the same time air is sucked out of the space around the mill through an intake opening in the mill.
  • the air in the room was previously set to a specific temperature and humidity.
  • the sugar is conditioned with air with an increased water content of at least 17 to 30 g H2O/kg air and a temperature of at least 25°C to 45°C.
  • intermediate storage takes place. This interim storage is carried out in a stirred tank, which is connected between the mill and the bagging system, in which the icing sugar is constantly moved for a defined period of time.
  • U.S. 2008/0008805 A1 Devices that combine different process areas are known, for example, from U.S. 2008/0008805 A1 . It describes a device for processing beans. It has two process tanks. The first tank has an agitator and a crusher located at the bottom. Beans and water are soaked, boiled and crushed in the first tank. The mixture is then further treated before and in the second process tank.
  • EP 0 498 543 B1 discloses a device for processing hay bales with three horizontally arranged rotors in a housing that is open at the top. A first helical rotor with knives is used to chop hay bales, the rotor below distributes the material along the length of the device and conveys the material to a third rotor with rakes in the main chamber.
  • the WO 2017/095042 A1 discloses a high-pressure reactor for processing biomass with an upstream pin mill.
  • a disadvantage of two separate apparatuses, as is known from the prior art, is the poor quality of the icing sugar, because the fresh surfaces are already degraded before the subsequent mixing.
  • the invention is therefore based on the object of creating a solution that makes it possible to carry out a process of comminution, conditioning and mixing of products in one apparatus, i.e. in a common machine housing. Furthermore, it is an aim of the invention to optimally mix different products under different conditions, including freshly comminuted products, in one device. In addition, it is an object of the invention to maintain the flowability of the comminuted product via long-term stabilization.
  • the object is achieved by a device that combines a comminution area with a comminution element and a mixing area with a mixing element in a common machine housing.
  • the comminution element and the mixing element are arranged sequentially from top to bottom in the common machine housing in such a way that the product is first comminuted and then mixed in the lower part of the housing and conditioned at the same time.
  • different products can be fed into the machine housing and mixed with it.
  • the invention is directed to the comminution of sugar and recrystallization of the powdered sugar produced in a machine housing.
  • a comminuting area with a comminuting element and a mixing area with a mixing element are arranged sequentially one after the other in this housing from top to bottom
  • the crushing and mixing process takes place in this atmosphere.
  • gas with a defined temperature and humidity is introduced into the machine housing.
  • the gas is air or an inert gas such as nitrogen.
  • the conditioned gas should be brought to the surfaces newly created during the crushing of the product as soon as possible in order to avoid degradation of the product. Ideally, it is fed into the shredding unit together with the product. However, it can also be fed separately from the product directly into the machine housing before the end of the mixing process.
  • the crushed product is then treated in the mixing area.
  • the residence time of the product in the mixing area can be adjusted depending on the product properties. This can be controlled by the power consumption of the mixing element, alternatively the machine housing load cells are set. In this way, the residence time can be controlled for a given throughput.
  • a transition area from the crushing to the mixing area in the machine housing is required so that the particles are kept in the conditioned atmosphere for a defined exposure time before there is intensive contact between the particles in the mixing area.
  • the defined exposure time results from the time for the diffusion of the individual atmospheric components into the fresh particle surface.
  • a transition area is therefore provided between the comminution area and the mixing area in order to separate the areas of comminution and mixing, so that the comminution is complete before the comminuted product is subjected to mixing.
  • the device according to the invention offers the possibility, in addition to the product to be comminuted, to add one or more additional components to the device and to mix them with the freshly ground product. At least one additional component is placed directly in the machine housing. If desired, this can also be comminuted and subsequently mixed in.
  • the comminution can take place in the same comminution element or in another one, which is also arranged in the same machine housing.
  • the shredding parameters can be adapted to the products to be ground, e.g. in terms of fineness and conditioning conditions in the shredding area.
  • a device with a plurality of comminuting elements can each be fed with the same or different material.
  • the comminuting element is mounted on one side in the machine housing, preferably it is arranged in the door of a manhole of the housing, so it can be easily swiveled out and is accessible for maintenance and cleaning purposes on both the drive side and the rotor side.
  • two crushing elements are arranged in the machine housing. They can also be arranged at different heights in order to give the different ground products a different residence time in the transition area.
  • the mixing element can be a paddle mixer or helical stirrer, although the selection is not limited to these mixers.
  • Non-mechanical mixers such as pneumatic mixers can also be used.
  • Rotors and stators of impact mills are preferably used as comminution elements.
  • the device is suitable for the production of powdered sugar from sugar.
  • the sugar to be crushed is fed to the crushing element together with conditioned air and is thus crushed and conditioned at the same time.
  • a defined atmosphere is created in the machine housing.
  • the ground icing sugar is mixed in the defined atmosphere during a defined dwell time in the mixing area so that the recrystallization of the icing sugar is complete before the icing sugar is discharged, bagged and/or stored.
  • the product is crushed in the upper part of the common machine housing and mixed in the lower part, where a defined atmosphere prevails in the housing and the recrystallization of the icing sugar is completed. This means that less equipment is required than with separate machines for the products and process steps, and the quality of the product is higher.
  • the invention also relates to a method for operating the device, in which the product is comminuted in a comminution element of a comminution area and then treated directly with a mixing element in a mixing area for a defined residence time, with a defined atmosphere prevailing in the machine housing.
  • the advantage of the inventive device is the improvement in quality of the product due to the direct mixing on the freshly created surfaces.
  • the small amount of equipment is advantageous due to the integration of the comminution element and the mixing element in a common machine housing.
  • a defined atmosphere in the machine housing prevents degradation of the freshly formed surfaces.
  • the device is energetically cheaper because of the smaller machine surfaces and the optimisable, holistic handling of the product flow.
  • FIG 1 a device 1 according to the invention for comminuting and mixing is shown.
  • the machine housing 2 of the device 1 accommodates a crushing element 3 and a mixing element 4 .
  • the device 1 thus has a crushing zone 13 with a crushing element 3 , a transition zone 12 and a mixing zone 14 with a mixing element 4 , arranged sequentially one above the other from top to bottom.
  • the machine housing is cylindrical in the comminution area 13 and transitions into a conical mixing area 14, which is adjoined by the discharge 9.
  • the crushing element 3 is mounted on one side in the upper area of the machine housing 2, the crushing area 13.
  • the comminuting element 3 can be driven in rotation by the motor 15 via a horizontally aligned shaft.
  • the product P to be comminuted is fed directly into the grinding chamber 6 of the comminution organ 3 via a sluice 5, e.g.
  • the comminution element 3 is a rotor and stator of an impact crusher, specifically 2 pin discs of a pin mill.
  • Conditioned air L is fed into the comminution element 3 with the product, so that the comminution takes place in a conditioned atmosphere.
  • the ground product falls through the transition area 12 into the mixing area 14.
  • the mixing element 4 is arranged in the lower funnel-shaped area of the machine housing 2, the mixing area 14.
  • the product is treated in the defined atmosphere in the machine housing. This is the prerequisite that the process of crushing and mixing takes place in a common atmosphere.
  • the shaft 8 of the mixing element 4 is arranged vertically and the drive 15 is located on the machine housing 2.
  • the mixing element is a paddle stirrer.
  • the end product E is discharged via the discharge, here a cellular wheel sluice 9. After that it will be fed to the bagging or a silo.
  • the device 1 stands on load cells 10, which enables the degree of filling of the device 1 to be determined and also enables the residence time of the ground product in the mixing area 14 to be set in order to complete the recrystallization in the mixing area 14, such as with powdered sugar.
  • the product inlet and outlet are designed as cellular wheel sluices 5 and 9.
  • the device 1 has a further product task 11 for a second product P2.
  • the product is fed in via the top of the device 1; it is also possible to arrange the product feed via the side wall above the transition area 12.
  • the product P2 is mixed into the crushed product P1 in the mixing area 14 in a controlled atmosphere.
  • FIG. 3 a device 1 with two comminution elements 3 in the comminution area 13 is shown.
  • two crushing elements 3 are arranged opposite one another at the same height.
  • Two products P1 and P3 can now be ground separately, which require different grinding conditions and different conditioning conditions and are then mixed in a jointly defined atmosphere and possibly also recrystallized.
  • Another product P2 is added without grinding and mixed with the other products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)

Claims (8)

  1. Dispositif 1 destiné au broyage et mélange d'un ou de plusieurs produits, caractérisé par le fait qu'une zone de broyage 13 avec l'organe de broyage 3 et une zone de mélange 14 avec l'organe de mélange 4, sont disposés séquentiellement l'une après l'autre du haut en bas par rapport à l'axe central du dispositif 1 dans un boîtier de machine commun 2 et dans le boîtier de machine commun 2 règne une atmosphère définie pour conditionner le produit.
  2. Dispositif 1 suivant la revendication 1, caractérisé par le fait que le dispositif destiné au broyage d'un produit, sert additionnellement au traitement d'un ou de plusieurs autres composants.
  3. Dispositif 1 suivant la revendication 2, caractérisé par le fait que le dispositif sert au traitement du composant additionnel ou de composants additionnels qui sont alimentés en même temps ou l'un après l'autre par le même organe de broyage 3 ou par d'autres organes de broyage additionnels 3 ou directement dans la zone de l'organe de mélange 4 dans le boîtier de machine commun 2.
  4. Dispositif 1 suivant une ou plusieurs des revendications 1 à 3, caractérisé par le fait qu'une zone de transition 12 se trouve entre la zone de broyage 13 et la zone de mélange 14.
  5. Dispositif 1 suivant une ou plusieurs des revendications 1 à 4, caractérisé par le fait que la zone de broyage 13, la zone de transition 12 et la zone de mélange 14 sont disposées séquentiellement l'une après l'autre du haut en bas par rapport à l'axe central du dispositif 1.
  6. Dispositif 1 suivant une ou plusieurs des revendications 1 à 5, caractérisé par le fait que le dispositif sert au traitement de sucre.
  7. Dispositif 1 suivant une ou plusieurs des revendications 1 à 6, caractérisé par le fait que le dispositif 1 est placé sur des capteurs de pesage 10.
  8. Procédé destiné au fonctionnement du dispositif 1 suivant une ou plusieurs des revendications 1 à 7, caractérisé par le fait que le produit est broyé dans un organe de broyage 3 situé dans une zone de broyage et qu'il est traité directement après par un organe de mélange 4 situé dans une zone de mélange 14 pour un temps de séjour défini et dans le boîtier de machine commun 2 règne une atmosphère définie pour conditionner le produit.
EP18000973.0A 2017-12-22 2018-12-14 Dispositif de broyage et de mélange Active EP3502281B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017011980.5A DE102017011980A1 (de) 2017-12-22 2017-12-22 Vorrichtung zum Zerkleinern und Mischen

Publications (2)

Publication Number Publication Date
EP3502281A1 EP3502281A1 (fr) 2019-06-26
EP3502281B1 true EP3502281B1 (fr) 2023-03-08

Family

ID=64744357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18000973.0A Active EP3502281B1 (fr) 2017-12-22 2018-12-14 Dispositif de broyage et de mélange

Country Status (3)

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EP (1) EP3502281B1 (fr)
DE (1) DE102017011980A1 (fr)
ES (1) ES2942679T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111672406A (zh) * 2020-07-11 2020-09-18 林慧 一种中医药药剂加工混合配比装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143310A (en) * 1991-02-08 1992-09-01 Roto-Mix Enterprises, Ltd. Combined hay processor and feed mixer
DE19643472C2 (de) 1996-10-22 2001-05-23 Suedzucker Ag Verfahren zur Konditionierung von feinvermahlenem Zucker durch Mahlraumbefeuchtung
DE10101464C2 (de) 2001-01-12 2003-03-06 Babcock Bsh Gmbh Anlage zur Herstellung von Puderzucker aus Kristallzucker oder invertiertem Zucker
FR2851416B1 (fr) * 2003-02-20 2006-02-17 Lucas Sa G Machine melangeuse distributrice en particulier de produits pour l'alimentation du betail
TW200800042A (en) * 2006-06-23 2008-01-01 Brasfanta Ind E Com Ltda Bean processing device and method for using the same
WO2017095042A1 (fr) * 2015-12-03 2017-06-08 Korea Research Institute Of Chemical Technology Développement de technologie de pré-traitement de biomasse par le biais d'un système d'alimentation régulée de biomasse fibreuse dans un réacteur à haute pression continu

Also Published As

Publication number Publication date
EP3502281A1 (fr) 2019-06-26
DE102017011980A1 (de) 2019-06-27
ES2942679T3 (es) 2023-06-05

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