[go: up one dir, main page]

WO2025163348A1 - Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes - Google Patents

Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes

Info

Publication number
WO2025163348A1
WO2025163348A1 PCT/IB2024/050925 IB2024050925W WO2025163348A1 WO 2025163348 A1 WO2025163348 A1 WO 2025163348A1 IB 2024050925 W IB2024050925 W IB 2024050925W WO 2025163348 A1 WO2025163348 A1 WO 2025163348A1
Authority
WO
WIPO (PCT)
Prior art keywords
dosing
opening
dosing device
screw
tank
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.)
Pending
Application number
PCT/IB2024/050925
Other languages
English (en)
Inventor
Luigi Sacchi
Massimiliano Sacchi
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.)
Flli Sacchi Di Sacchi Angelo E C SNC
Original Assignee
Flli Sacchi Di Sacchi Angelo E C SNC
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 Flli Sacchi Di Sacchi Angelo E C SNC filed Critical Flli Sacchi Di Sacchi Angelo E C SNC
Priority to PCT/IB2024/050925 priority Critical patent/WO2025163348A1/fr
Publication of WO2025163348A1 publication Critical patent/WO2025163348A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
    • G01F11/282—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement for fluent solid material not provided for in G01F11/34, G01F11/40, G01F11/46
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
    • B65B1/12—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of screw type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
    • B65B1/14—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of centrifugal type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/10—Means for removing bridges formed by the material or article, e.g. anti-clogging devices
    • 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
    • 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
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4836—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and moving material over a stationary surface, e.g. sweep arms or wheels

Definitions

  • the present invention relates to a dosing apparatus for powder, granule or flake material.
  • the invention relates to a dosing apparatus for dispensing with great precision dosed quantities of dry loose products, in powder, granule, flake, chip or pellet state.
  • Dosers are known from the prior art that comprise a containing chamber that is fed, for example by a hopper, with the material to be dosed.
  • a feed screw dosing device is arranged, which can comprise a single feed screw or also a double feed screw, with a substantially horizontal axis of rotation, each of which is driven by a respective motor.
  • a homogenizing device is also arranged that mixes the material to be dosed and maintains the material aerated.
  • the homogenizing device comprises a plurality of vanes fixed to a shaft that can rotate around a substantially horizontal axis of rotation.
  • the object of the homogenizing device is to prevent, as far as possible, the risk that material accumulates above the dosing device, compromising correct operation of the dosing apparatus.
  • One object of the present invention is to eliminate the risk of material accumulating in the transit zone between the containing chamber containing the material to be dosed and the dosing device, thus ensuring constant dosing precision of the dosing device.
  • Another object of the present invention is to ensure constant feeding to the dosing device so as to improve the dosing precision of the dosing apparatus and extend both the continuous and batch dosing range.
  • a dosing apparatus for powder, granule, flake, chip and pellet materials comprising a tank, opened above, configured to contain a material to be dosed, wherein the tank communicates with a first dosing device and with a second dosing device, wherein the first dosing device and the second dosing device communicate with a dispensing element by which said material can be dispensed into a container, characterized in that the tank is provided with a flat bottom in which a first opening is made, through which the material to be dosed is fed to the first dosing device, and a second opening is made, through which the material to be dosed is fed to the second dosing device, wherein inside the tank a stirring element is arranged, which can rotate around a respective axis of rotation substantially perpendicular to the bottom of the tank, said stirring element being provided with one or more stirring arms, one of which can be internally hollow and be provided with a plurality of openings facing the bottom of the tank, by which
  • the invention further permits very high dosing precision.
  • the double feed screw further enables the dosing range to be extended.
  • figure l is a perspective top view of a dosing apparatus according to the invention
  • figure 2 is a perspective bottom view of the doser of figure 1
  • figure 3 is a raised view of the dosing apparatus of figure 1
  • figure 4 is a plan view of the dosing apparatus of figure 1
  • figure 5 is a section of the dosing apparatus according to the invention, along the line V-V in figure 3
  • figure 6 is a section of the dosing apparatus according to the invention, along the line VI- VI in figure 4
  • figure 7 is a section of the dosing apparatus according to the invention, along the line VII- VII in figure 4
  • figure 8 is an enlarged detail of figure 5
  • figure 9 is an enlarged detail of figure 7.
  • a dosing apparatus 1 for dosing powder, granule, flake, chip and pellet materials includes a tank 2, for example in the form of a hopper open above intended to contain the material to be dosed.
  • the tank 2 is fixed to a support element 3, which is in turn fixed to a base 4 of the dosing apparatus 1.
  • the base 4 can comprise a plate 36, provided with a plurality of pins 37, which constitute a hooking system, by which the base 4 can be hooked by a robot arm to move the dosing apparatus 1.
  • the tank 2 is provided with a flat bottom 5, in which a first opening 6 is made, through which the material to be dosed is fed to a first dosing device 8, and a second opening 7 is made through which the material to be dosed is fed to a second dosing device 9.
  • a plurality of holes or nozzles can be provided by means of which a compressed gas can be injected to fluidify the material to be dosed and prevent the formation of bridges of material that could obstruct, even only partially, the openings 6 and 7, compromising dosing precision.
  • the first dosing device 8 and the second dosing device 9 are fixed to the support element 3.
  • a stirring element 24 is arranged, which can rotate around a respective axis of rotation 25 substantially perpendicular to the bottom 5 of the tank 2.
  • the stirring element 24 is used to mix the material contained in the tank 2, so as to fluidify the material and prevent material bridges being formed that could obstruct, even only partially, the first opening 6 and/or the second opening 7, compromising dosing precision.
  • the stirring element 24 is rotated by a respective motor 26 connected to a respective shaft 27 of the stirring element 24 by a respective reduction gear, or worm reduction gear [0019]
  • the stirring element 24 is provided with a plurality of stirring arms 42, for example three, which extend radially from a hub 43 fixed to the respective shaft 27.
  • the stirring arms 42 are arranged preferably at a constant angular pitch around the hub 43 and extend on a plane substantially parallel to the bottom 5 of the tank 2.
  • At least one of the stirring arms 42 can be hollow and be provided with a plurality of openings 44 facing the bottom 5 of the tank 2.
  • the hollow stirring arm 42 can be connected to a compressed air source so as to send, through the aforesaid openings 44, a flow of compressed air to the first opening 6 and/or the second opening 7, to break up possible bridges of material that start to form on the first opening 6 or on the second opening 7. In this manner, it is possible to prevent with certainty the formation of the aforesaid bridges, which might form despite the continuous action of mixing the material to be dosed, which is performed by the stirring arms 42.
  • the hub 43 can be provided with a gas supply system, which has a dual function: supplying the hollow stirring arm 42 and supplying a dust seal system placed therein. This dust seal system prevents dust entering inside the rotation shaft and water infiltrations during washing operations.
  • the respective shaft 27 of the stirring element is associated with an inductive sensor 35, or with an encoder, or a similar system, which is used to detect the angular position of the respective shaft 27 of the stirring element 24, so as to command the dispensing of compressed air when the hollow stirring arm 42 is at the first opening 6, or at the second opening 7.
  • the first dosing device 8 is a feed screw dosing device, which comprises a first cylindrical casing 10, with a first inner diameter D 1 , inside which a first screw 11 is arranged, which is rotated around a first axis of rotation 12 by a first motor 13, for example a brushless motor, connected to a first shaft 14 of the first screw 11, for example by a first reduction gear 15.
  • a first motor 13 for example a brushless motor
  • the first inner diameter DI corresponds to the outer diameter of the first screw 11, less the clearance necessary to enable the first screw 11 to rotate inside the first cylindrical casing 10.
  • the rotation speed of the first motor 13 is adjustable, for example, between 0 and 3000 rpm, or between 0 and 6000 rpm, or between 0 and 12000 rpm.
  • the reduction ratio of the first reduction gear 15 can be advantageously set at 1/10, or have any other value.
  • the first cylindrical casing 10 has a third opening 22, that, together with the first opening 6, places the inside of the tank 2 in communication with the inside of the first cylindrical casing 10 of the first feed screw dosing device 8.
  • the first screw 11 has a first pitch P0 in a first zone 35, that is at the third opening 22, and a second pitch Pl, in a second zone 36, which follows the first zone 35.
  • the first pitch P0 can be less than the second pitch Pl, to facilitate breaking up of possible bridges of material that may form in the opening 22.
  • the second dosing device 9 is a feed screw dosing device that comprises a second cylindrical casing 16, with a second inner diameter D2, inside which a second screw 17 is arranged, with a third pitch P2 that is less than the second pitch Pl.
  • the second screw 17 is rotated around a second axis of rotation 18 by a second motor 19, for example a brushless motor, connected to a second shaft 20 of the second screw 17, for example by a second reduction gear 21.
  • the second inner diameter D2 corresponds to the outer diameter of the second screw 17 less the clearance necessary to enable the second screw 17 to rotate inside the second cylindrical casing 16.
  • the rotation speed of the second motor 19 is adjustable, for example, between 1 and 3000 rpm.
  • the reduction ratio of the second reduction gear 21 can be advantageously set at 1/15, or have any other value.
  • the second cylindrical casing 16 has a fourth opening 23, that, together with the second opening 7, places the inside of the tank 2 in communication with the inside of the second cylindrical casing 16 of the second feed screw dosing device 9.
  • the first dosing device 8 is provided with a first discharge port 29, obtained at an end of the first cylindrical casing 10 and communicating with a chamber 31 of a dispensing element 30.
  • the second dosing device 9 is provided with a second discharge port 32, obtained at an end of the second cylindrical casing 16 and communicating with the chamber 31 of the dispensing element 30.
  • the chamber 31 communicates below with a dispensing frustoconical element 33, terminating in a dispensing opening 34, through which the material, discharged into the chamber 31 by the first dosing device 8 and by the second dispensing device, is dispensed into a floppy or stiff container, which is not shown.
  • the dispensing element 30 can be further provided with a powder recovery system, for recovering the powder that could exit the container in which the material is being dosed. This system extends along the perimeter of the frustoconical element 33.
  • the first discharge port 29 of the first dosing device 8 can be closed by a sliding first closing device 38, for example a plate, arranged inside the chamber 31, and movable, by a first operating cylinder 39, for example a pneumatic operating cylinder, between a first position, in which the first closing device 38 does not interact with the first discharge port 29, and a second position, in which the first closing device 38 occludes completely the first discharge port 29.
  • a sliding first closing device 38 for example a plate, arranged inside the chamber 31, and movable, by a first operating cylinder 39, for example a pneumatic operating cylinder, between a first position, in which the first closing device 38 does not interact with the first discharge port 29, and a second position, in which the first closing device 38 occludes completely the first discharge port 29.
  • the second discharge port 32 of the second dosing device 9 can be closed by a sliding second closing device 40, for example a plate, arranged inside the chamber 31, and movable, by a second operating cylinder 41, for example a pneumatic operating cylinder, between a first position, in which the second closing device 40 does not interact with the second discharge port 32, and a second position in which the second closing device 40 occludes completely the second discharge port 32.
  • a sliding second closing device 40 for example a plate, arranged inside the chamber 31, and movable, by a second operating cylinder 41, for example a pneumatic operating cylinder, between a first position, in which the second closing device 40 does not interact with the second discharge port 32, and a second position in which the second closing device 40 occludes completely the second discharge port 32.
  • the first dosing device 8 performs initial rough dosage of the material to be dosed, whereas the second doser 9 performs precision dosage of the material. For dosing very small or very large quantities of material, also just one of the two screws can be used. [0045]
  • the dosing precision that can be achieved by the dosing apparatus according to the invention is equal to 0.1g.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Un appareil de dosage (1) pour matériaux en poudre, en granulés ou en paillettes comprend un réservoir (2) configuré pour contenir un matériau à doser, le réservoir (2) communiquant avec un premier dispositif de dosage (8) et avec un second dispositif de dosage (9), le premier dispositif de dosage (8) et le second dispositif de dosage (9) communiquant avec un élément de distribution (30) par lequel ledit matériau peut être distribué dans un récipient, le réservoir (2) étant pourvu d'un fond plat (5) dans lequel une première ouverture (6) est réalisée, à travers laquelle le matériau à doser est introduit dans le premier dispositif de dosage (8), et une seconde ouverture (7) est réalisée, à travers laquelle le matériau à doser est introduit dans le second dispositif de dosage (9), à l'intérieur du réservoir (2) étant agencé un élément d'agitation (24), qui peut tourner autour d'un axe de rotation respectif (25) sensiblement perpendiculaire au fond (5) du réservoir (2), ledit élément d'agitation (24) étant pourvu d'un ou de plusieurs bras d'agitation (42), au moins l'un des bras d'agitation (42) pouvant être intérieurement creux et pourvu d'une pluralité d'ouvertures (44) faisant face au fond (5) du réservoir (2), par lesquelles un écoulement de gaz comprimé peut être envoyé à la première ouverture (6) et à la seconde ouverture (7).
PCT/IB2024/050925 2024-02-01 2024-02-01 Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes Pending WO2025163348A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2024/050925 WO2025163348A1 (fr) 2024-02-01 2024-02-01 Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2024/050925 WO2025163348A1 (fr) 2024-02-01 2024-02-01 Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes

Publications (1)

Publication Number Publication Date
WO2025163348A1 true WO2025163348A1 (fr) 2025-08-07

Family

ID=90417636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2024/050925 Pending WO2025163348A1 (fr) 2024-02-01 2024-02-01 Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes

Country Status (1)

Country Link
WO (1) WO2025163348A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015768A1 (fr) * 1989-06-14 1990-12-27 Spido Technik Gmbh Entwicklung Dispositif de dosage pour materiaux pulverulents ou granules en vrac
EP0412330B1 (fr) * 1989-08-09 1993-06-16 I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.p.A. Trémie pour l'alimentation de matériau pulvérulent
JP2013040014A (ja) * 2011-08-16 2013-02-28 Chino Gijutsu Kk 撹拌装置及び該撹拌装置を有する物品移動装置
CN209241816U (zh) * 2018-11-29 2019-08-13 天津马赫科技有限公司 一种橡胶行业用破拱型螺旋粉体加料器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015768A1 (fr) * 1989-06-14 1990-12-27 Spido Technik Gmbh Entwicklung Dispositif de dosage pour materiaux pulverulents ou granules en vrac
EP0412330B1 (fr) * 1989-08-09 1993-06-16 I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.p.A. Trémie pour l'alimentation de matériau pulvérulent
JP2013040014A (ja) * 2011-08-16 2013-02-28 Chino Gijutsu Kk 撹拌装置及び該撹拌装置を有する物品移動装置
CN209241816U (zh) * 2018-11-29 2019-08-13 天津马赫科技有限公司 一种橡胶行业用破拱型螺旋粉体加料器

Similar Documents

Publication Publication Date Title
US4443109A (en) Method and apparatus for continuous feeding, mixing and blending
KR870000082B1 (ko) 혼합물 제조를 위한 혼합장치
EP0911130B1 (fr) Mélangeur
CA1115688A (fr) Melangeur-doseur coaxial a vis sans fin
JPS62140633A (ja) 連続的及び断続的な作業形式のための２軸式強制ミキサ−
US6644847B2 (en) Quasi-continuous treatment of particulate materials with cleansing nozzle system
KR100493433B1 (ko) 중합체물질을연속혼합시키기위한방법및부분적으로접하고상호침투하는회전자를갖는관련기계
CN110433726A (zh) 一种快速混合装置
CN111941657A (zh) 一种高性能混凝土预拌料的生产装置及使用方法
WO2025163348A1 (fr) Appareil de dosage pour matériaux en poudre, en granulés ou en paillettes
KR100203621B1 (ko) 모르타르 혼합장치
KR0140980B1 (ko) 교반기와 교반기의 사용방법 및 교반된 분말상 제품의 제조방법
US3989229A (en) Process for continuous metering and mixing
EP3727790B1 (fr) Appareil de mesure pour mesurer des ingrédients de composés en particulier pour des pneus et procédé de mesure d'ingrédients de composés en particulier pour des pneus
CN213133048U (zh) 一种计量混合一体机
KR101600691B1 (ko) 교반 및 이송장치
GB1599856A (en) Mixing apparatus
KR200307733Y1 (ko) 분말형상의 재료 공급장치
CN214934216U (zh) 一种石灰加药管防堵装置
KR200223250Y1 (ko) 스크류 콘믹서용 첨가제 투입장치
CN210544940U (zh) 用于砂浆的自动配料机
CN115742016A (zh) 一种石膏板促凝剂粉料给料方法及系统
CN208801479U (zh) 一种生产塑木复合材料的混料设备
CN219585146U (zh) 一种干混砂浆的输送装置
RU2841410C2 (ru) Устройство дозирования для дозирования ингредиентов смесей, в частности, для шин и способ дозирования ингредиентов смесей, в частности, для шин

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24713529

Country of ref document: EP

Kind code of ref document: A1