US3840191A - Vibrating plate mill for batch operation - Google Patents

Vibrating plate mill for batch operation Download PDF

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Publication number
US3840191A
US3840191A US00331744A US33174473A US3840191A US 3840191 A US3840191 A US 3840191A US 00331744 A US00331744 A US 00331744A US 33174473 A US33174473 A US 33174473A US 3840191 A US3840191 A US 3840191A
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United States
Prior art keywords
milling
vessel
milling vessel
outlet opening
vibrating plate
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Expired - Lifetime
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US00331744A
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English (en)
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G Herzog
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting

Definitions

  • a vibrating plate mill for batch operation comprises a resiliently mounted milling vessel for pulverizing, homogenizing and mixing solids, including abradable materials in the preparation of building materials, chemical products, ceramics and a number of other feeds.
  • the vibrating plate mill further comprises a bob weight driven by a separate electric driving motor rotating about a vertical axis, the bob weight rotating and thereby inducing milling elements in the form of impact plates to rotate in planetary motion inside the milling vessel.
  • the milling vessel is provided with an outlet opening in its floor or its side for discharging the pulverized product, said outlet opening being controllable by a flush closing valve element operable by appropriate means.
  • the milling vessel has the form of a long narrow shaft which vibrates in a vertical plane, and which is filled with impact elements such as rods, the feed to be pulverized travelling in a direction normal to the vibrations and being crushed by the rods before leaving the milling vessel through a floor resembling a screen.
  • the milling vessel rests on supporting springs and vibrates at a high rate, each point of the milling vessel travelling in an arcuate path.
  • the milling vessel performs vibratory motions in circular or elliptical paths contained in a horizontal plane.
  • the milling vessels contain ring-shaped grinding elements, the feed being conducted into their inside grinding path.
  • the sizebrating table is attached to an underframe by elastic elements, such as metal or rubber springs, a shaft mounted in the underframe provided with eccentrically located pins engaging the carrier plate and bearing a counterweight on the opposite side to the pins.
  • inertial vibrating conveyors which concentrically embrace one or more feeding or discharging points and perform rapidlow amplitude vibrations induced by several rotating out-ofbalance inertial weights.
  • the conveyor or screening trough is energized by the bob weights on each side rotating with a relative phase displacement of so that the trough vibrates about a virtual axis in the middle between the bob weights. Since the conveyor trough is supported by springs which are so disposed that the direction of vibration is tangential to the circle, the vibrations of the conveyor trough are not in the plane of this circle but slightly inclined in relation thereto.
  • these conventional devices are unsuitable to be employed for the size reduction of a feed.
  • an apparatus which contains a rapidly vibrating body in the interior of a rotating drum.
  • the feed adheres by centrifugal force to the wall of the drum and the vibrating body is resiliently mounted at each end and is thus itself designed to generate vibrations, or a vibrator may be contained in its interior. It is a defect of this arrange ment that the considerable grinding effect on the feed causes a correspondingly high rate of wear of the vibrating body, so that the product is unevenly ground. Even continuous readjustment of the amplitude of vibration and of the several consequential parameters cannot eliminate the described defect.
  • vibrating plate mills For fine milling so-called vibrating plate mills have also been proposed. These consist of a cylindrical milling vessel containing milling elements, one or more rings and a stone. The cylindrical milling vessel is induced to perform rotary vibrations by a bob weight mounted on the vertical drive shaft of a motor. The milling elements inside the cylindrical milling vessel are forced to perform planetary gyrations and they grind and break down the feed which is introduced at a rate bearing a fixed relationship to the capacity of the milling vessel. The milling operation proceeds in batches, the milling vessel being charged and discharged by manual control. In view of the requirements of up-todate technology the need for manual control is a drawback.
  • the object of the invention is to enlarge the range-of available vibrating plate mills by an improved form of construction in which the above criticized shortcomings are eliminated and a feed can be automatically size-reduced in batches.
  • a vibrating plate mill for batch operation, which comprises a resiliently mounted milling vessel for pulveriz- 3 ing, homogenizing and mixing solids, including abradable materials in the preparation of building materials, chemical products, ceramics and a number of other feeds; a bob weight driven by a separate electric driving motor rotating about a vertical axis, said bob weight performing vibratory gyrations and thereby inducing milling elements in the form of impact plates to rotate in planetary motion inside the milling vessel; a charging hopper surmounting the milling vessel, and an outlet opening in thefloor or side of the milling vessel for discharging the pulverized product being controllable by a flush closing valve element operable by appropriate means.
  • the means for operating the valve element controlling the outlet opening may have the form of pneumatic or hydraulic actuating cylinders, electric lifting magnets or like actuating means which are operable via pressure pipes, time switches or the like.
  • the valve element may be attached to the piston rod of a piston head controllably movable inside the actuating cylinder.
  • outlet opening of the milling vessel may directly communicate with a descending discharge pipe for the product.
  • FIGURE is a longitudinal middle section of a vibrating plate mill according to the invention.
  • the drawing illustrates a vibrating impact plate mill having a vibrator unit which comprises an electric driving motor 12 and a bob weight 13 in a casing 14 that is freely pendantly suspended from compression springs 11 surmounting a machine frame 10.
  • the bob weight 13 driven by the electric driving motor 12 causes a cylindrical milling vessel 1 containing a grinding chamber 18 to build up a circular vibrating motion. Consequently the milling elements 15 (one or more rings and a stone) of the vibrating plate mill perform planetary gyrating motions and by impact pulverize a feed introduced into the milling vessel 1 through a charging hopper 2.
  • the feed is introduced into the milling vessel 1 by pneumatic conveyor means.
  • the speed of rotation of the driving motor 12 can be adjustably controlled.
  • a valve element is closed during the milling operation and forms a flush closure in an outlet opening 3 in the floor of the milling vessel 1 and thus prevents portions of the feed from catching or being retained in the outlet opening 3.
  • a cylinder 4 which contains a piston head 8' attached to a piston rod 8 formed integrally with the valve element 5 is detachably bolted to the milling vessel 1.
  • valve element 5 When a prescribed milling time has elapsed the valve element 5 is opened. In the illustrated embodiment this is done in that a pressure medium which had previously entered the cylinder 4 through a pressure pipe 6 and which had thus kept the valve closed is now introduced into the cylinder 4 through a pressure pipe 7.
  • This pressure medium which may be oil or compressed air flows into the interior of the cylinder 4 and now forcesv the piston head 8' to descend. Since the piston head 8, the piston rod 8 and the valve element 5 form a single unit the outlet opening 3 in the bottom of the milling-vessel 1 will be opened, allowing the pulverized feed to be discharged through the outlet opening 3 into an inclined discharge pipe 9.
  • the valve element 5 can be closed in analogous manner by reintroducing the pressure medium into the interior of the cylinder 4 through the pressure pipe 6.
  • a cover plate 16 which forms a dust-tight closure on the charging hopper 2 as well as the milling vessel 1 are both fitted with suitable connections 17 for the necessary pipes.
  • the cover plate 16 is taken off, the outlet open-. ing 3 is closed by the valve element 5 and a fresh batch of feed is filled into the milling vessel 1, so that the described working cycle can repeat itself.
  • the illustratively described vibrating plate mill permits a feed to be pulverized in a fully automated process.
  • This novel facility effectively enriches the conventional technology in the field of vibrating plate mills used for analytical purposes.
  • a vibrating plate mill for batch operation comprising a resiliently mounted milling vessel for pulverizing, homogenizing and mixing solids, including abradable materials in the preparation of building materials, chemical products, ceramics and a number of other feeds; a bob weight driven by a separate electric driving motor rotating about a vertical axis, said bob weight rotating and causing said milling vessel to perform vibratory gyrations and thereby inducing milling elements inside said milling vessel to rotate in planetary motion; a charging. hopper surmounting the milling vessel, and an outlet opening in the floor of the milling vessel for discharging the pulverized product being controllable by a flush closing valve element operable by appropriate means.
  • said means for operating the valve element controlling the outlet opening have the form of fluid actuating cylinders operable via pressure pipes.
  • valve element is attached to the piston rod of a piston head controllably movable inside the actuating cylinder.
  • a vibrating mill for pulverizing, homogenizing and mixing solids comprising a base, a frame and resilient means mounting said frame on said base, said frame including a. a milling vessel having a floor and wall means about the perimeter thereof transverse to said floor,
  • valve means for opening and closing said outlet
  • weight means mounted for eccentric movement about an axis transverse to the floor of said vessel
  • said rotating eccentric weight means causes said milling vessel to revolve inducing said milling element to move in a planetary motion inside said milling vessel.
  • said means for operating said valve means comprises a fluid operated piston-cylinder arrangement.
  • a mill according to claim 8 further comprising a charging hopper for feeding material into said milling vessel and a descending discharge pipe connected to said outlet opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US00331744A 1972-04-15 1973-02-13 Vibrating plate mill for batch operation Expired - Lifetime US3840191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19727214240U DE7214240U (de) 1972-04-15 1972-04-15 Schwingmuehle zum mahlen homogenisieren und vermengen von feststoffen chemischen produkten und deren ausgangsstoffe

Publications (1)

Publication Number Publication Date
US3840191A true US3840191A (en) 1974-10-08

Family

ID=6629648

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Application Number Title Priority Date Filing Date
US00331744A Expired - Lifetime US3840191A (en) 1972-04-15 1973-02-13 Vibrating plate mill for batch operation

Country Status (10)

Country Link
US (1) US3840191A (ja)
JP (1) JPS5635510B2 (ja)
BE (1) BE791276A (ja)
CA (1) CA978165A (ja)
CH (1) CH543896A (ja)
DE (1) DE7214240U (ja)
ES (1) ES409274A1 (ja)
FR (1) FR2163189A5 (ja)
GB (1) GB1367580A (ja)
IT (1) IT969964B (ja)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923255A (en) * 1973-07-03 1975-12-02 Keith W G Leonard Vertical spindle pulverisers
US4373674A (en) * 1979-02-14 1983-02-15 Marion Barrera Crushing method and apparatus
WO1999059723A1 (en) * 1998-05-19 1999-11-25 Giorgio Berselli Mill for grinding loose materials
WO2009037160A1 (de) 2007-09-14 2009-03-26 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Schwingmühle und reinigungsverfahren für schwingmühle
US20110139913A1 (en) * 2009-12-11 2011-06-16 Flsmidth A/S Milling device
RU2477660C2 (ru) * 2007-07-14 2013-03-20 Реч Гмбх Лабораторная вибрационная мельница с установленными под углом помольными чашами
CN103706450A (zh) * 2013-12-26 2014-04-09 枣庄矿业集团高庄煤业有限公司 密封式化验制样粉碎机
CN106423489A (zh) * 2016-12-14 2017-02-22 湖南万通科技股份有限公司 研磨机
CN109174286A (zh) * 2018-11-13 2019-01-11 永平县泰达废渣开发利用有限公司 一种改进型双辊式破碎机
US20190111438A1 (en) * 2017-10-13 2019-04-18 SPEX SamplePrep, LLC Grinding mill with securing frame
CN113976252A (zh) * 2021-11-24 2022-01-28 天津博瑞联特智能科技有限公司 自动研磨机
CN115634733A (zh) * 2022-09-30 2023-01-24 义乌市森山健康科技产业有限公司 一种铁皮石斛连续破碎机检测工艺及设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682617B1 (fr) * 1991-10-22 1994-01-14 Laboratoires Scientifiques Indls Broyeur, en particulier a masses oscillantes, et bol pour un tel broyeur.
DE102012009989B4 (de) * 2012-05-22 2017-07-13 Fritsch Gmbh Backenbrecher im Labormaßstab
EP3772377A1 (de) * 2019-08-06 2021-02-10 Herzog Maschinenfabrik GmbH & Co. KG Scheibenschwingmühle mit sensorik
CN113457816B (zh) * 2021-07-01 2022-08-19 厦门艾思欧标准砂有限公司 一种采用立式研磨机制备球形化粉体的系统及工艺
DE102022201991B3 (de) * 2022-02-25 2023-03-30 Hs-Tumbler Gmbh Vorrichtung und Verfahren zum Sieben

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330602Y1 (ja) * 1968-06-29 1968-12-13

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923255A (en) * 1973-07-03 1975-12-02 Keith W G Leonard Vertical spindle pulverisers
US4373674A (en) * 1979-02-14 1983-02-15 Marion Barrera Crushing method and apparatus
WO1999059723A1 (en) * 1998-05-19 1999-11-25 Giorgio Berselli Mill for grinding loose materials
US6494393B1 (en) 1998-05-19 2002-12-17 Giorgio Berselli Mill for grinding loose materials
RU2477660C2 (ru) * 2007-07-14 2013-03-20 Реч Гмбх Лабораторная вибрационная мельница с установленными под углом помольными чашами
WO2009037160A1 (de) 2007-09-14 2009-03-26 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Schwingmühle und reinigungsverfahren für schwingmühle
US20110139913A1 (en) * 2009-12-11 2011-06-16 Flsmidth A/S Milling device
US8091817B2 (en) * 2009-12-11 2012-01-10 Flsmidth A/S Milling device
CN103706450A (zh) * 2013-12-26 2014-04-09 枣庄矿业集团高庄煤业有限公司 密封式化验制样粉碎机
CN106423489A (zh) * 2016-12-14 2017-02-22 湖南万通科技股份有限公司 研磨机
US20190111438A1 (en) * 2017-10-13 2019-04-18 SPEX SamplePrep, LLC Grinding mill with securing frame
US10518269B2 (en) * 2017-10-13 2019-12-31 SPEX SamplePrep, LLC Grinding mill with securing frame
US11524302B2 (en) 2017-10-13 2022-12-13 SPEX SamplePrep, LLC System with securing frame
CN109174286A (zh) * 2018-11-13 2019-01-11 永平县泰达废渣开发利用有限公司 一种改进型双辊式破碎机
CN113976252A (zh) * 2021-11-24 2022-01-28 天津博瑞联特智能科技有限公司 自动研磨机
CN115634733A (zh) * 2022-09-30 2023-01-24 义乌市森山健康科技产业有限公司 一种铁皮石斛连续破碎机检测工艺及设备

Also Published As

Publication number Publication date
JPS5635510B2 (ja) 1981-08-18
CA978165A (en) 1975-11-18
FR2163189A5 (ja) 1973-07-20
BE791276A (fr) 1973-03-01
CH543896A (de) 1973-11-15
ES409274A1 (es) 1976-03-16
GB1367580A (en) 1974-09-18
IT969964B (it) 1974-04-10
DE7214240U (de) 1972-07-27
JPS4916959A (ja) 1974-02-14

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