EP0358632B1 - Siebvorrichtung - Google Patents

Siebvorrichtung Download PDF

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Publication number
EP0358632B1
EP0358632B1 EP89890229A EP89890229A EP0358632B1 EP 0358632 B1 EP0358632 B1 EP 0358632B1 EP 89890229 A EP89890229 A EP 89890229A EP 89890229 A EP89890229 A EP 89890229A EP 0358632 B1 EP0358632 B1 EP 0358632B1
Authority
EP
European Patent Office
Prior art keywords
systems
eccentric shaft
screening device
another
distance
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.)
Expired - Lifetime
Application number
EP89890229A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0358632A2 (de
EP0358632A3 (de
Inventor
Leander Ing. Ahorner
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.)
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Original Assignee
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
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 IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft filed Critical IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Publication of EP0358632A2 publication Critical patent/EP0358632A2/de
Publication of EP0358632A3 publication Critical patent/EP0358632A3/de
Application granted granted Critical
Publication of EP0358632B1 publication Critical patent/EP0358632B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48—Stretching devices for screens
    • B07B1/485—Devices for alternately stretching and sagging screening surfaces

Definitions

  • the invention relates to a sieve device with at least two frame systems which can be moved relative to one another, with grate bars assigned to each system, which engage in pairs and are connected by flexible sieve elements which are attached to them and bridge the distance between the bars and which are connected by means of a means exclusively to the two systems stored and caused by a drive in rotation eccentric shaft relative movement of the two systems can be tensioned and relaxed.
  • a vibrating sieve has become known in which a box containing at least one sieve bottom and elastically supported at its ends in the area of one of its oscillation centers with a vibrator in the form of an arranged in the longitudinal center plane of the box and provided with an imbalance Shaft is connected.
  • the invention aims to provide a screening device which is simple in construction, inexpensive to operate and has a long service life. Above all, however, it should perform well. According to the invention this is achieved in a screening device of the type mentioned in the introduction in that the eccentric shaft is arranged at one end of the two systems and this at the other end or at a distance therefrom by means of an element which ensures an essentially linear relative movement of the two systems to one another, such as handlebars , Pushing rubber blocks and the like, are connected to one another.
  • the handlebar or handlebar-like connection ensures that the systems initially perform circular vibrations which gradually take the form of ellipses and in the area of the handlebars take the form of a flat circular arc or a straight line.
  • the desired decrease in the vibration effect is achieved in the design according to the invention without further assistance. This also results in the avoidance of unnecessary drive energy, so that a high level of efficiency is achieved.
  • the frame systems on the screen material discharge side again describe elliptical vibrations, which may be desirable for certain screen material.
  • the links or the like are arranged in the region of the acceleration pole of the vibration system.
  • the distance between the eccentric shaft and the handlebars or the like can be about 60-80% of the screen length.
  • FIG. 1 shows the screening device in a side view and partially in section
  • FIG. 2 shows a cross section
  • FIG. 3 shows a section along the line III-III in FIG. 1
  • FIG. 4 shows a body to which a force acts eccentrically.
  • the screening device has a first frame system 1, which is supported by spring elements 2 on the foundation or machine frame, not shown.
  • An eccentric shaft 3 is by means of the bearings 4 in the frame system 1 and their Eccentric 5 guided in bearings 6, which are connected to the second frame system 7.
  • the frame system 7 is connected to grate bars 8 which pass through an opening 9 in the frame system 1 and are screwed to the web of the frame 7.
  • the opening 9 is covered on the inside by means of a disk 10 which moves with the system 7.
  • the frame 1 is also screwed to the grate bars 11, the grate bars 8 and 11 alternating.
  • the two systems 1 and 7 are connected to one another by means of spring links 12. Due to the vibration of the two systems to one another caused by the eccentric shaft, the screen elements 13 are alternately tensioned and relaxed between the grate bars 8 and 11. The mutual relative movement in the longitudinal direction of the screen elements 13 is 2e if e is the measure of the eccentricity of the shaft 3.
  • the extent of the oscillating movement of the system 1 in the region of the eccentric shaft can be influenced favorably. For example, can be achieved that the system vibrates almost exclusively parallel to the screen surface, the amplitude being sufficient for self-cleaning of the system 1.
  • the invention can have yet another embodiment, the physical basis of which is explained with reference to FIG. 4.
  • 4 shows a body K whose center of gravity is P o .
  • the force F starts at a point P F , whereby the body K is given a tangential acceleration a t and an angular acceleration ⁇ around the center of gravity P o .
  • the normal acceleration of the mass points increases with the distance from the center of gravity P o and is perpendicular to the connecting line center of gravity P o - mass point.
  • the mass points which lie in a plane E perpendicular to the force F and passing through the center of gravity P o , it is parallel to the tangential acceleration a t .
  • the normal acceleration is rectified and to the right of it the tangential acceleration.
  • the handlebars 12 or the like are arranged in the region of the acceleration pole, restoring forces acting damping on the drive are eliminated, as a result of which the required drive power is reduced.
  • the system From the feed side of the screen to the acceleration pole, the system has an accelerating effect on the screened material. From the acceleration pole to the end of the sieve there is an increasing delay of the material to be sieved, so that there is a longer dwell time on the sieve for the sieving of the boundary grains and thus a better sieving in this grain size range.
  • the mass of the material to be sieved on the sieve can also be taken into account in the determination of the acceleration pole by including the mass of the material to be sieved in the calculation of the moment of inertia around the common center of gravity.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Transmission Devices (AREA)
EP89890229A 1988-09-05 1989-09-04 Siebvorrichtung Expired - Lifetime EP0358632B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0217888A AT390898B (de) 1988-09-05 1988-09-05 Siebvorrichtung
AT2178/88 1988-09-05

Publications (3)

Publication Number Publication Date
EP0358632A2 EP0358632A2 (de) 1990-03-14
EP0358632A3 EP0358632A3 (de) 1991-01-02
EP0358632B1 true EP0358632B1 (de) 1993-04-21

Family

ID=3529383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89890229A Expired - Lifetime EP0358632B1 (de) 1988-09-05 1989-09-04 Siebvorrichtung

Country Status (9)

Country Link
US (1) US5051170A (sv)
EP (1) EP0358632B1 (sv)
AT (1) AT390898B (sv)
CA (1) CA1327957C (sv)
CS (1) CS277461B6 (sv)
DE (1) DE58904135D1 (sv)
ES (1) ES2040504T3 (sv)
FI (1) FI91488C (sv)
HU (1) HU206465B (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT175U1 (de) * 1994-05-20 1995-04-25 Eduard Mannsberger Ges M B H I Schwing- bzw. ruettelsiebanordnung
US6000554A (en) * 1996-05-13 1999-12-14 Comcorp, Inc. Reciprocating screening conveyor
AT411336B (de) * 2002-01-30 2003-12-29 Peytec Aschauer & Peyfuss Oeg Schwingvorrichtung
AT5816U3 (de) * 2002-09-19 2003-05-26 Binder Co Ag Siebvorrichtung
US7654394B2 (en) * 2004-06-14 2010-02-02 Action Equipment Company, Inc. Flexible mat screening or conveying apparatus
US7344032B2 (en) * 2004-06-14 2008-03-18 Action Equipment Company, Inc. Flexible sieve mat screening apparatus
US8757392B2 (en) 2011-11-23 2014-06-24 Action Vibratory Equipment, Inc. Flexible mat screening apparatus with offset supports
CN104624488B (zh) * 2015-02-02 2016-01-20 江苏鹏飞集团股份有限公司 直线弛张筛
CN107537767B (zh) * 2017-09-19 2023-09-15 安徽理工大学 两自由度摆动筛

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204920B (de) * 1963-01-05 1965-11-11 Albert Wehner Sieb- oder Foerdermaschine
DE1206372B (de) * 1964-09-26 1965-12-09 Albert Wehner Siebrost
DE2158128C3 (de) * 1971-11-24 1980-06-04 Hein, Lehmann Ag, 4000 Duesseldorf Siebvorrichtung
DE2209721A1 (de) * 1972-03-01 1973-09-13 Albert Wehner Vorrichtung zum sieben, sichten, filtern o.dgl
DE2220070A1 (de) * 1972-04-24 1973-11-08 Albert Wehner Sieb-, sicht-, filter- oder waschmaschine
US4064051A (en) * 1972-06-02 1977-12-20 Hein, Lehmann Akt. Elastic transporting, sieving or filtering base with swinging drive
US4188288A (en) * 1972-11-30 1980-02-12 Hein, Lehmann Ag Screen with tubular frame systems coupled for rectilinear motion
DE3214943A1 (de) * 1982-04-22 1983-10-27 Naučno-issledovatel'skij i proektnyj institut po obogaščeniju i aglomeracii rud černych metallov "Mechanobrčermet", Krivoj Rog Vibrationssieb
DE3221344C1 (de) * 1982-06-05 1983-10-27 Hein, Lehmann AG, 4000 Düsseldorf Siebmaschine
DE3524895C1 (de) * 1985-07-12 1986-12-18 Hein, Lehmann AG, 4000 Düsseldorf Siebmaschine
DE8816250U1 (de) * 1988-01-14 1989-03-02 Hein, Lehmann AG, 4000 Düsseldorf Spannwell-Siebmaschine

Also Published As

Publication number Publication date
ATA217888A (de) 1990-01-15
FI894093A0 (sv) 1989-08-31
AT390898B (de) 1990-07-10
DE58904135D1 (de) 1993-05-27
EP0358632A2 (de) 1990-03-14
EP0358632A3 (de) 1991-01-02
CS277461B6 (en) 1993-03-17
HU206465B (en) 1992-11-30
CA1327957C (en) 1994-03-22
ES2040504T3 (es) 1993-10-16
FI91488B (sv) 1994-03-31
US5051170A (en) 1991-09-24
CS510789A3 (en) 1992-10-14
FI91488C (sv) 1994-07-11
FI894093A (sv) 1990-03-06
HUT54928A (en) 1991-04-29

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