EP3031527A1 - Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis - Google Patents

Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis Download PDF

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Publication number
EP3031527A1
EP3031527A1 EP14197012.9A EP14197012A EP3031527A1 EP 3031527 A1 EP3031527 A1 EP 3031527A1 EP 14197012 A EP14197012 A EP 14197012A EP 3031527 A1 EP3031527 A1 EP 3031527A1
Authority
EP
European Patent Office
Prior art keywords
sieve
grinding
screen
grinding device
piece
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Withdrawn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
EP14197012.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Antoine Virdis
Christophe PASQUIER
Glenn Corminboeuf
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.)
FREWITT FABRIQUE DE MACHINES SA
Original Assignee
FREWITT FABRIQUE DE MACHINES SA
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 FREWITT FABRIQUE DE MACHINES SA filed Critical FREWITT FABRIQUE DE MACHINES SA
Priority to EP14197012.9A priority Critical patent/EP3031527A1/fr
Priority to US15/533,689 priority patent/US20180207642A1/en
Priority to PCT/IB2015/059413 priority patent/WO2016092456A1/fr
Priority to CN201580075699.0A priority patent/CN107206429A/zh
Publication of EP3031527A1 publication Critical patent/EP3031527A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/06—Cone or disc shaped screens
    • 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
    • B02C13/26—Details
    • B02C13/282—Shape or inner surface of mill-housings
    • B02C13/284—Built-in screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/062—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives with rotor elements extending axially in close radial proximity of a concentrically arranged slotted or perforated ring
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165—Screen denying egress of oversize material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/04—The screen or the screened materials being subjected to ultrasonic vibration

Definitions

  • the present invention relates to a sieve system for a grinding device for materials, particularly powdery materials, which allows a better flow rate of the material through the sieve during the grinding operation.
  • the invention also relates to a grinding device comprising such a sieve system.
  • the known grinding treatment systems for a material such as a solid or powdery substance intended for the manufacture of a pharmaceutical, food or other product, use a rotor rotatably mounted against a filtering part, or sieve.
  • the material to be granulated is pressed between the rotor and the screen.
  • the screen is typically designed in two or more elements, for example a canvas and a frame, interconnected by different chemical means (glue) or mechanical (welding).
  • the sieve is used to sort the crushed material as it flows through the sieve.
  • the sieve is generally composed of a sieving cloth surrounded by a frame, or welded sheets.
  • the fragility of thin sheets requires that they be supported by thicker sheets, forming a rigid frame. This connection between the thin sheet and the thicker part of the frame is however not ideal when combined with the use of the rotor pressing the material against the screen.
  • a sieve architecture in several components interconnected generates a fragility of the sieve. Indeed, during the grinding operation in which the material is pressed against the sieve, the welds between the sheets are likely to be weakened, potentially leading to a risk of deterioration of the sieve. Indeed the manufacture of sieves for grinding machine is conventionally obtained by welding between a sheet of thin perforated thickness to let the treated materials to a thicker sheet used as cradles. The two metal plates are thus bonded by mechanical or chemical means, which can be described as fragile or of little effectiveness since their connection whatever it may be may be deteriorated by the weight of the treated materials. Such an arrangement further promotes a high rate of retention of materials. The milled material can thus infiltrate gaps between the perforated plate and the thick plate. This can increase the clogging effect of the milled material in the sieve.
  • the patent application FR2682050 relates to a sieving device comprising a support frame carrying at least one vibrating casing, equipped with a frame carrying a sieving cloth.
  • the frame is in the form of a rigid structure that carries a screen cloth.
  • the screen fabric is bonded to this frame via a glue joint.
  • a sonotrode coupled to an electro-acoustic converter is fixed to the frame by means of screws.
  • the ultrasonic vibrations generated by the sonotrode are transmitted to the fabric via the frame and the glue joint.
  • the displacement that can be given to the sieving cloth being limited for mechanical reasons, the increase of the acceleration must therefore result from the increase of the frequency of the vibration.
  • the document WO13004229 discloses a sieve frame for an ultrasonic sieve which includes an upper face for attaching a screen cloth, a bottom face opposite to the top face, and an opening surrounded in the sieve frame.
  • the frame of the sieve has at least one groove extending around the opening so that the part of the frame which is located in the edge of the groove points towards the opening, and the opening forms an acoustic fabric conductor which is at least partially decoupled from the rest of the frame, from the point of view of the transmission of ultrasound.
  • the sieve architecture here is composed of two or more structured parts.
  • the document WO08040540 relates to a device for activating a filter fabric encircled with a filter frame, by means of ultrasound.
  • This ultrasound means comprises a transition piece and / or an ultrasound conductor, and means for introducing the ultrasound into the filter fabric, in particular an ultrasound conductor.
  • the ultrasonic transport system travels in a passageway through the filter frame and is attached thereto.
  • the sieve is non-metallic, it resides in a device in two parts comprising on the one hand a filtering textile, and on the other hand a filter frame.
  • the patent application FR2768948 proposes an assistance device for sieving and unclogging the fabric of a sieve which comprises a vibrating structure which is in contact with the screen fabric, and which is vibrated by a wave generator, in particular ultrasonic.
  • This structure consists of a piece having in section, the shape of an L returned with a base and a shoulder; the lower face of said base is connected to the generator and at least the end of the shoulder is in integral contact with the fabric, which overflows on either side of the base.
  • the sieve referred to in this document is a two-part non-metallic device attached to a wave generator.
  • the invention provides various technical means.
  • a first object of the invention is to provide a sieve system for a grinding process, in particular solid or powdery materials, for carrying out the grinding method in continuous flow mode.
  • Another object of the invention allows the grinding of powdery materials with a fluid circulation of the powdery materials avoiding possible risks of stagnation thereof in the sieve, that is to say by minimizing the clogging of the material crushed in the sieve
  • Yet another object of the invention is to provide a sieve configuration that allows to reduce the risk of deterioration of the screen when vibrations are transmitted on its structure to facilitate the flow of powdery materials.
  • Another object of the invention is further to ensure optimal transmission of ultrasonic vibrations exerted on the sieve.
  • the one-piece sieve has advantageous characteristics.
  • a one-piece arrangement allows easy circulation of powdery materials as part of the treatment by grinding, greatly reducing the risk of stagnation, or clogging, of materials.
  • Such a configuration also allows to avoid the risk of damage to the object when vibrations are exerted on it continuously.
  • the use of a one-piece sieve makes it possible to increase the grinding efficiency and to reduce the micro-heating.
  • such a sieve configuration makes it possible to envisage a grinding treatment system for various categories of solid or powdery materials.
  • the screen constitutes a one-piece element in which the filtering portion is integral with the support part.
  • This one-piece and single-material configuration makes it possible to optimize the level of transmission of the frame towards the filtering part, for a better overall efficiency of the grinding system.
  • the screen constitutes a one-piece element which is made of metal alloy.
  • the support consists of a surface provided with a plurality of openings, each being provided with a filtration zone having openings adapted to this function.
  • the one-piece element is obtained by chemical machining using specific masks.
  • the chemical machining is preferably carried out by placing a raw plate in a chemical bath on which masks sized respectively for the support part and for the filtering part are affixed.
  • the screen is connected by a connector ring to a vibration generator facilitating the continuous flow of powdery materials through the filtering portion.
  • the invention also provides a grinding device comprising a sieve consisting of a one-piece element. Vibrations generated by a vibration generator can be exerted on the screen, all of which is an integral part of an enclosure, grouping the functional elements of said device.
  • the figure 1 illustrates an embodiment of a screen 1 for a grinding device, in a perspective view where the screen is shown flat.
  • the one-piece sieve 1 is made of a metal alloy material, consisting of a filter portion 6 and a support portion 5 arranged to form a single block.
  • the support part 5 is provided with large openings 3 in which the elements of the filtering part 6 appear.
  • the support part constitutes a thick and solid element, ensuring the screen 1 a certain rigidity.
  • the filtering portion 6 is composed of thin openings 4 in order to facilitate a fluid flow rate of materials.
  • Such a one-piece sieve arrangement 1 allows, as opposed to prior sieves consisting of several glued or welded elements, to prevent powdery materials are likely to interfere in cavities, nonexistent in this architecture.
  • the shapes and dimensions specific to the different openings of the one-piece sieve are here represented in circular form; however, the rounded shape is not exhaustive since a multitude of shapes can be envisaged to fulfill the same function.
  • the figure 2 is a perspective representation of a part of the one-piece sieve 1 included in a grinding device 10, hammer mill type grinder.
  • the grinding device 10 comprises an enclosure 11 which defines a grinding chamber 16, which can be filled with the material to be ground, a rotor assembly 12 rotatably mounted in the enclosure 11 and a screen 1 for splitting the material ground by the rotor assembly 12, which moves and unfolds below the rotor assembly 12.
  • a drive unit 20 is arranged to control the movements of the rotor assembly 12 relative to the screen 1 during the grinding operation.
  • the figure 3 illustrates another example of a grinding device 10 as a whole, here a conical sieve type shown in section, using a one-piece sieve 1 as previously described.
  • This system is integrated in a tubular protection enclosure 11 defining the grinding chamber 16 and in which the screen 1 is mounted coaxially.
  • the screen 1 is of frustoconical shape which narrows downwards.
  • a rotor assembly 12 is rotatably mounted in the screen 1.
  • the rotor 12 comprises two symmetrical milling blades 121 arranged so that the space between each blade 121 and the screen is substantially constant.
  • the rotor 12 rotates relative to the inner wall of the screen 1 so as to press the material to be grinded from the top of the chamber 26 against the screen 1 and passing it through the openings 4 of the screen 1.
  • the enclosure 11 of protection makes it possible to dispose the functional assembly of a grinding system of powdery materials in a closed and protected environment so that the grinding process can be carried out under specifically controlled conditions.
  • the enclosure 11 is delimited by a wall 13 whose dimensions are adapted according to the volume required to house the functional assembly of the grinding system.
  • the one-piece sieve 1 shown in the various figures, at various angles, is a one-piece sieve 1 of metal alloy. This one-piece element is obtained by means of a specific manufacturing process by chemical machining which opposes the previously known sieve manufacturing process.
  • the manufacture of the one-piece sieve is made possible by chemical machining.
  • a raw plate is immersed in a chemical bath. Different masks are used on both sides of the plate.
  • the perforation depths are then accurately managed to obtain a filamentous portion 6 with thin openings on one side 4, and a support part 5 with wide openings 3 on the other.
  • the one-piece sieve 1 is coupled to a vibration generator 7 through a connector ring 12, surrounding the sieve 1.
  • a vibration generator 7 Such a configuration has the effect of facilitating the flow of the milled material through 1.
  • the effect of the vibration prevents the material from agglomerating in the openings 4 of the sieve 1 during the grinding operation, thus allowing a continuous flow of the milled material, without human intervention.
  • the vibrations generated by the vibration generator 7 are transmitted to the filtering portion of the screen 6 in a very efficient manner. This leads to an acceleration of the circulation of the crushed material, in particular to avoid the risk of stagnation of powdery materials.
  • the one-piece architecture also prevents embrittlement of the sieve by the vibrations exerted when the latter is devoid of bonding areas or welding.
  • the vibration generator 7 is coupled to the connector ring 12 via a vibration-conducting arm 9 and an adapter 8, or connector.
  • the figure 4 is a perspective representation of the same grinding system as that of the figure 3 but where the internal elements of the protective enclosure 11 are shown outside thereof, in order to further visualize certain functional elements of the vibration chain, and in particular the vibration-transmitting ring 12.
  • the coupling of the vibration generator 7 to the screen 1 may be provided by a configuration other than that of the connector ring 12 illustrated in FIGS. figures 2 and 4 .
  • the vibration generator 7 can be coupled directly to the support portion 5 of the screen 1.
  • the vibration generator 7 is coupled to the screen 1 via an arc 12 disposed at one end of the sieve 1 of cylindrical shape.
  • the enclosure 11 allows not only grinding of the powdery materials in a healthy and opaque environment, but also serves to collect the powdery materials having passed through the sieve 1 piece.
  • the grinding system of the powdery materials by grinding thus allows a treatment of continuous material without human intervention, through the combination between the monobloc sieve 1 and the vibration device 7, 8, 9.
  • the dimensions of the enclosure 11 are also advantageously defined so as to take into account the vibration device connected with a sieve.
  • the flow rate of the material through the screen can be up to 50% greater than the flow rate achieved by using a screen comprising two or more several parts and in the absence of vibration exerted on the sieve. There is therefore less retention of material in the grinding chamber thus improving the yield of the grinding operation.
  • Other advantages include the lower temperature generated by the grinding operation and less power to rotate the rotor during the grinding operation.
  • the treatment system previously described is advantageously used in the context of a process for treating materials, in particular powdery materials, with steps involving mechanical operations carried out on the material, such as, for example, sieving, centrifugation, weighing, sorting, granulometry, or other mechanical operation.
  • the process is particularly suitable for powdery materials, without excluding other forms of material, for example granular.
EP14197012.9A 2014-12-09 2014-12-09 Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis Withdrawn EP3031527A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14197012.9A EP3031527A1 (fr) 2014-12-09 2014-12-09 Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis
US15/533,689 US20180207642A1 (en) 2014-12-09 2015-12-07 Sieve system for a grinding device, and grinding device using this type of sieve system
PCT/IB2015/059413 WO2016092456A1 (fr) 2014-12-09 2015-12-07 Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis
CN201580075699.0A CN107206429A (zh) 2014-12-09 2015-12-07 用于研磨装置的筛系统及使用所述筛系统的研磨装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197012.9A EP3031527A1 (fr) 2014-12-09 2014-12-09 Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis

Publications (1)

Publication Number Publication Date
EP3031527A1 true EP3031527A1 (fr) 2016-06-15

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Family Applications (1)

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EP14197012.9A Withdrawn EP3031527A1 (fr) 2014-12-09 2014-12-09 Système de tamis pour un dispositif de broyage et dispositif de broyage utilisant un tel système de tamis

Country Status (4)

Country Link
US (1) US20180207642A1 (zh)
EP (1) EP3031527A1 (zh)
CN (1) CN107206429A (zh)
WO (1) WO2016092456A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11642700B2 (en) * 2017-12-01 2023-05-09 Glatt Maschinen- Und Apparatebau Ag Screen apparatus
CN116571314A (zh) * 2023-06-28 2023-08-11 广东鸿凯智能科技有限公司 直驱筛网振动式研磨机振动筛

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900011376A1 (it) * 2019-07-10 2021-01-10 Itea Spa Procedimento e dispositivo per la macinazione di matrici eterogenee
US11203021B2 (en) 2019-07-22 2021-12-21 Cloudious9 Inc. Herb grinder
AU2020328440A1 (en) * 2019-08-12 2022-03-17 Cloudious9 Inc. Herb grinder
FR3100430B1 (fr) 2019-09-05 2022-07-08 Culinari Mundi Procédé de fabrication de miettes alimentaires

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682050A1 (fr) 1991-10-08 1993-04-09 Chauvin Sarl Ets Dispositif de tamisage equipe de moyens de decolmatage.
FR2768948A1 (fr) 1997-09-30 1999-04-02 Sinaptec Dispositif d'assistance au tamisage et au decolmatage a structure vibrante ultra-sonore et installation de tamisage equipee d'un tel dispositif
WO2008040540A1 (de) 2006-10-05 2008-04-10 Artech Systems Ag Vorrichtung zum anregen eines in einem siebrahmen eingefassten siebgewebes mittels ultraschall
WO2011066283A2 (en) * 2009-11-24 2011-06-03 M-I L.L.C. Flanged perforated metal plate for separation of pellets and particles
WO2012003877A1 (en) * 2010-07-09 2012-01-12 Frewitt Fabrique De Machines Sa Milling device with adjustable milling operation
WO2013004229A2 (de) 2011-07-04 2013-01-10 Artech Systems Ag Siebrahmen für ultraschallsieb und ultraschallsieb

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GB8418658D0 (en) * 1984-07-21 1984-08-22 Thule United Ltd Filtering screens
US20120018355A1 (en) * 2010-07-24 2012-01-26 Grant Young Method of separating material in a vibratory device
CN103537430A (zh) * 2013-10-24 2014-01-29 高州市丰盛食品有限公司 可拆式桂圆分拣振动筛
CN203725361U (zh) * 2014-01-16 2014-07-23 宝山钢铁股份有限公司 具有高筛分能力的固定筛

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682050A1 (fr) 1991-10-08 1993-04-09 Chauvin Sarl Ets Dispositif de tamisage equipe de moyens de decolmatage.
FR2768948A1 (fr) 1997-09-30 1999-04-02 Sinaptec Dispositif d'assistance au tamisage et au decolmatage a structure vibrante ultra-sonore et installation de tamisage equipee d'un tel dispositif
WO2008040540A1 (de) 2006-10-05 2008-04-10 Artech Systems Ag Vorrichtung zum anregen eines in einem siebrahmen eingefassten siebgewebes mittels ultraschall
WO2011066283A2 (en) * 2009-11-24 2011-06-03 M-I L.L.C. Flanged perforated metal plate for separation of pellets and particles
WO2012003877A1 (en) * 2010-07-09 2012-01-12 Frewitt Fabrique De Machines Sa Milling device with adjustable milling operation
WO2013004229A2 (de) 2011-07-04 2013-01-10 Artech Systems Ag Siebrahmen für ultraschallsieb und ultraschallsieb

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Title
ANONYMOUS: "ACG Value Links", 5 September 2014 (2014-09-05), XP055185911, Retrieved from the Internet <URL:https://web.archive.org/web/20140905053204/http://www.acg-valuelinks.com/milling-sieving.php> [retrieved on 20150424] *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11642700B2 (en) * 2017-12-01 2023-05-09 Glatt Maschinen- Und Apparatebau Ag Screen apparatus
CN116571314A (zh) * 2023-06-28 2023-08-11 广东鸿凯智能科技有限公司 直驱筛网振动式研磨机振动筛
CN116571314B (zh) * 2023-06-28 2024-03-15 广东鸿凯智能科技有限公司 直驱筛网振动式研磨机振动筛

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WO2016092456A1 (fr) 2016-06-16
US20180207642A1 (en) 2018-07-26
CN107206429A (zh) 2017-09-26

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