EP0642844A2 - Dispositif de tamisage de laboratoire - Google Patents

Dispositif de tamisage de laboratoire Download PDF

Info

Publication number: EP0642844A2
Authority: EP; European Patent Office
Prior art keywords: housing; leaf springs; springs; screening machine; machine according
Prior art date: 1993-09-13
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.): Granted

Application number

EP94114272A

Other languages

German (de)

English (en)

Other versions

EP0642844A3 (fr

EP0642844B1 (fr

Inventor

Harald Fischer

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.)

F Kurt Retsch GmbH and Co KG

Original Assignee

F Kurt Retsch GmbH and Co KG

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.)

1993-09-13

Filing date

1994-09-10

Publication date

1995-03-15

1994-09-10 Application filed by F Kurt Retsch GmbH and Co KG filed Critical F Kurt Retsch GmbH and Co KG

1995-03-15 Publication of EP0642844A2 publication Critical patent/EP0642844A2/fr

1995-10-04 Publication of EP0642844A3 publication Critical patent/EP0642844A3/fr

1998-04-08 Application granted granted Critical

1998-04-08 Publication of EP0642844B1 publication Critical patent/EP0642844B1/fr

2014-09-10 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- 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
- 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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens

Definitions

the invention relates to a sieving machine with a three-dimensional sieve movement with a sieve carrier having a horizontally oriented base plate for the at least one sieve bottom, wherein the sieve carrier, which is movably arranged in the vertical direction relative to the housing and is acted upon by an electromagnet as a drive, is supported against the housing via springs.
a generic screening machine is known from use according to the company brochure "Retsch-Labor Siebmaschine, VIBRO, 006/1985";
the screen carrier having a three-armed spider is supported with the spider arms on a spring arranged on the housing and movably arranged with respect to the housing, the springs being aligned in a substantially vertical arrangement with respect to the filter carrier and inclined in a tangential oblique position with respect to the vertical vertical axis of the screening machine .
An electromagnet arranged under the portafilter creates a vertical vibration level by acting on the spider of the portafilter, the vertical movement of the portafilter being converted into a three-dimensional movement of the sieve plates arranged on the portafilter via the movement along the axis of the inclined springs.
the sieving success achieved with the three-dimensional sieving movement can still be increased. It is therefore the object of the invention to provide a generic screening machine in which the screening success is further improved.
the springs are designed as leaf springs running in a plane that is essentially parallel to the base plate of the portafilter, the clamps of which on the housing on the one hand and on the portafilter on the other hand are each tilted in the same direction by an angular amount related to the horizontal baseplate plane, so that the respective spring surfaces of the leaf springs have a course correspondingly tilted about their longitudinal axis out of their course plane.
the basic orientation of the leaf springs in a plane parallel to the portafilter has the advantage that the vertical component of the sieve movement is thus increased compared to the prior art, because the portafilter held by the leaf springs acts on the leaf springs perpendicular to their longitudinal spring axis; With the help of the clamping of the leaf springs, which is tilted at its two ends about its longitudinal axis, the vertical vibration component of the portafilter is now overlaid with the desired further vibration component for generating a three-dimensional sieve movement. It has been found that the sieving success is significantly improved in the inventive design of the sieving machine; in addition, the screening machine is easy to manufacture and assemble with just a few individual parts.
the angular amount by which the leaf springs 18 are tilted about their longitudinal axis is one to five degrees.
the housing is pot-shaped with an edge encompassing the portafilter and having the housing-side fixtures for the leaf springs, the leaf springs being arranged in a star shape between the edge and the portafilter.
the filter holder has a clamping block which projects into the area enclosed by the edge of the pot-like housing and on which the leaf springs are clamped.
three or six leaf springs can be provided in a symmetrical arrangement; however, the invention can be implemented with any number of leaf springs which are to be aligned in a symmetrical arrangement.
the screening machine has a housing 10 which is fastened to a base plate 12 by screws 11, which base plate 12 has feet 13 by means of which the screening machine can be set up.
a cover 14 enclosing the housing 10 rises on the base plate 12, an actuator 15 and an electrical connection 15a being integrated in the cover 14, for example.
a cover 24 is seated on the upper sieve tray 23, and the collecting tray and sieve trays are braced against one another via a holder 25.
the filter holder 19 now extends through the upper part 14a of the cover 14 with a clamping block 20 into the part enclosed by the edge 16 of the housing 10, so that leaf springs 18 extending from the clamps 17 in the edge 16 of the housing 10 have their other end to hold in clamps 21 formed on the clamping block 20 are.
the leaf springs 18 are initially basically aligned in a plane parallel to the base plate of the portafilter 19;
the leaf springs 18, which are preferably designed as rectangular springs with a spring surface 18a, do not lie with their spring surface 18a parallel to the plane of the filter holder 19, rather the clamps 17, 21 are tilted in the same direction relative to the plane of the filter holder 19, so that the leaf springs 18 have a course in which their respective spring surface 18a is tilted out of this course plane about its longitudinal axis by an angular amount between 1 and 5 degrees from the course plane parallel to the filter holder 19.
the tilted arrangement of the plurality of star springs 18 arranged in a star shape is of course in the same direction in order to ensure the desired superimposition of the vertical vibration.
an electromagnet 26 is arranged, the upper edge of which extends into the vicinity of the clamping block 20 in such a way that the clamping block 20 can be set in motion with the electromagnet 26.

Landscapes

Combined Means For Separation Of Solids (AREA)

EP94114272A 1993-09-13 1994-09-10 Dispositif de tamisage de laboratoire Expired - Lifetime EP0642844B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4331028A DE4331028C1 (de)	1993-09-13	1993-09-13	Laborsiebmaschine
DE4331028		1993-09-13

Publications (3)

Publication Number	Publication Date
EP0642844A2 true EP0642844A2 (fr)	1995-03-15
EP0642844A3 EP0642844A3 (fr)	1995-10-04
EP0642844B1 EP0642844B1 (fr)	1998-04-08

Family

ID=6497585

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94114272A Expired - Lifetime EP0642844B1 (fr)	1993-09-13	1994-09-10	Dispositif de tamisage de laboratoire

Country Status (3)

Country	Link
EP (1)	EP0642844B1 (fr)
DE (2)	DE4331028C1 (fr)
ES (1)	ES2117745T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10134871A1 (de) *	2001-07-18	2003-02-06	Hte Ag The High Throughput Exp	Siebvorrichtung zur Klassierung von Feststoffen
CN107096715A (zh) *	2017-06-19	2017-08-29	柳州三农科技有限公司	一种用于谷物的筛选细化装置
CN112474270A (zh) *	2020-11-05	2021-03-12	江晓岚	一种耐火材料生产用振动筛分机
WO2024200284A1 (fr)	2023-03-27	2024-10-03	RUHR-UNIVERSITäT BOCHUM	Procédé de mécanocatalyse directe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE20219150U1 (de)	2002-12-10	2003-03-06	Haver & Boecker, 59302 Oelde	Laborsiebmaschine
CN106807626A (zh) *	2015-12-02	2017-06-09	镇江市润州金山金属粉末厂	一种铝粒用高效筛分机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL197841A (fr) *	1954-06-14
DE4012902C1 (fr) *	1990-04-23	1991-04-18	F. Kurt Retsch Gmbh & Co Kg, 5657 Haan, De

1993
- 1993-09-13 DE DE4331028A patent/DE4331028C1/de not_active Expired - Fee Related
1994
- 1994-09-10 DE DE59405624T patent/DE59405624D1/de not_active Expired - Fee Related
- 1994-09-10 ES ES94114272T patent/ES2117745T3/es not_active Expired - Lifetime
- 1994-09-10 EP EP94114272A patent/EP0642844B1/fr not_active Expired - Lifetime

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10134871A1 (de) *	2001-07-18	2003-02-06	Hte Ag The High Throughput Exp	Siebvorrichtung zur Klassierung von Feststoffen
DE10134871B4 (de) *	2001-07-18	2006-09-07	Hte Ag The High Throughput Experimentation Company	Siebvorrichtung zur Klassierung von Feststoffen und deren Verwendung
US7147109B2 (en)	2001-07-18	2006-12-12	Hte Aktiengesellschaft The High Throughput Experimentation Company	Sieve device for screening solid material
CN107096715A (zh) *	2017-06-19	2017-08-29	柳州三农科技有限公司	一种用于谷物的筛选细化装置
CN112474270A (zh) *	2020-11-05	2021-03-12	江晓岚	一种耐火材料生产用振动筛分机
WO2024200284A1 (fr)	2023-03-27	2024-10-03	RUHR-UNIVERSITäT BOCHUM	Procédé de mécanocatalyse directe

Also Published As

Publication number	Publication date
ES2117745T3 (es)	1998-08-16
DE4331028C1 (de)	1995-03-23
EP0642844A3 (fr)	1995-10-04
EP0642844B1 (fr)	1998-04-08
DE59405624D1 (de)	1998-05-14

Legal Events

Date	Code	Title	Description
1995-01-27	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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