EP0350830A2 - Screening machine - Google Patents
Screening machine Download PDFInfo
- Publication number
- EP0350830A2 EP0350830A2 EP89112565A EP89112565A EP0350830A2 EP 0350830 A2 EP0350830 A2 EP 0350830A2 EP 89112565 A EP89112565 A EP 89112565A EP 89112565 A EP89112565 A EP 89112565A EP 0350830 A2 EP0350830 A2 EP 0350830A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- screening machine
- cross members
- cross
- shaft
- members
- 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.)
- Granted
Links
- 238000012216 screening Methods 0.000 title claims abstract description 17
- 230000005484 gravity Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
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
- B07B1/48—Stretching devices for screens
- B07B1/485—Devices for alternately stretching and sagging screening surfaces
Definitions
- the invention relates to a screening machine with a plurality of cross members arranged parallel to one another and at intervals, between which flexible screen linings are fastened and of which every second cross member moves relative to the other intermediate second cross members in order to alternately stretch and compress the screen linings.
- the object of the invention is to improve a screening machine of the type mentioned in such a way that it is structurally simple and achieves high screening performance.
- This object is achieved in that the second crossbeams in between are approximately caused to oscillate in a circle by an unbalance.
- the structurally very simple unbalance drive takes over the movement of the second crossbeams in between, so that movable support is only required for the directly driven crossbeams.
- the other cross members can be fastened to machine parts, in particular to the screen box, which is moved by the eccentric.
- Construction and drive are particularly simplified if the imbalance is attached to a shaft that drives the first crossbeam with at least one eccentric. It is preferably proposed that the shaft be mounted in the machine parts, in particular the screen box, to which the second cross members are attached.
- the screening machine has a screen box with two side cheeks 1, 2, which run perpendicular and parallel to one another and between which the cross members 3, 4 are at right angles. While the first cross members 3 are rotatably mounted on the side cheeks, the second cross members 4 located therebetween are immovably fixed on the side cheeks 1, 2. The first and second cross members 3, 4 alternate with each other, so that when the first cross member 3 swings back and forth, the flexible screen mats 5 located above the cross members 3, 4 are alternately stretched and compressed.
- the drive axis of the first cross member 3 are inserted through both side cheeks 1, 2 and fastened there to rocker arms 6 which are essentially vertical and are fastened with their upper sides to a coupling rod 7.
- the coupling rod is in turn connected via a joint rod to a ring element 9 which is fastened on an eccentric 10.
- the eccentric 10 sits on a shaft 11 which is driven by an electric motor 13 via a gear 12.
- the electric motor 13 thus generates a regular swiveling back and forth of the cross members 3 about their longitudinal axes via the aforementioned members.
- the shaft 11 with the two end-side eccentrics 10 is arranged approximately in the center of gravity of the machine parallel to the cross members, so that 10 joint rods 8 and coupling rods 7 are arranged on both sides of the shaft 11 and the eccentric, with a coupling rod 7 drives one half of the cross members 3 and the other opposite horizontal coupling rod 7 drives the other half of the cross members 3 via rocker arms 6.
- Sector-shaped unbalance elements 14 are fastened on the shaft 11, which is rotatably mounted in the side cheeks 1, 2, on both outer sides of the side cheeks 1, 2, which are rotationally adjustable with respect to the shaft and thus also the eccentrics 10.
- these unbalance elements 14, both of which are set at the same angle and thus parallel to one another, the entire screen box is set in vibration.
- the underside of the screen box or the undersides of both side cheeks 1, 2 are placed on elastic bearings 15, in particular spring elements.
- the cross members 4 are placed in circular vibrations exactly or approximated, which also superimpose the oscillating movements of the cross members 3, since these cross members 3 are also exposed to the circular vibrations. This not only improves the screening performance and transport of the material to be screened, it also increases self-cleaning.
- the supports 4 located in between can also be driven in a tilting manner by a second tilting drive.
- eccentrics can be attached to the shaft of the second tilt drive.
- FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 in that the cross members 3 are connected to one another by lateral bars 16 which are opposite one another Move the side walls parallel to the longitudinal direction of the screening machine.
- the spars 16 rest on vertical links 17.
- These reciprocating link 17 can also be inclined relative to the spars to additionally support the transport of the screenings.
- the screening machine is also possible to design the screening machine as a double deck, i.e. Arrange and drive two screen surfaces with the first and second cross members in parallel one above the other.
- a second screen deck can also be fastened over the driven screen deck according to FIG. 1 or FIG. 3, the cross member of which is driven only via the unbalance and which serves as a protective deck with larger opening widths.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Holo Graphy (AREA)
- Eye Examination Apparatus (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Fish Paste Products (AREA)
- Bakery Products And Manufacturing Methods Therefor (AREA)
Abstract
Description
Die Erfindung betrifft eine Siebmaschine mit mehreren parallel nebeneinander und in Abständen angeordneten Querträgern, zwischen denen flexible Siebbeläge befestigt sind und von denen jeder zweite Querträger sich relativ zu den übrigen dazwischen liegenden zweiten Querträgern bewegt, um die Siebbeläge abwechselnd zu strecken und zu stauchen.The invention relates to a screening machine with a plurality of cross members arranged parallel to one another and at intervals, between which flexible screen linings are fastened and of which every second cross member moves relative to the other intermediate second cross members in order to alternately stretch and compress the screen linings.
Es sind Siebmaschinen mit Querträgern bekannt, bei denen jeder zweite Querträger einem Bewegungssystem angehört und die dazwischen befindlichen Querträger einem zweiten Bewegungssystem.Screening machines with cross members are known in which every second cross member belongs to a movement system and the cross members located between them belong to a second movement system.
Aufgabe der Erfindung ist es, eine Siebmaschine der eingangs genannten Art so zu verbessern, daß sie konstruktiv einfach ist und hohe Siebleistungen erreicht.The object of the invention is to improve a screening machine of the type mentioned in such a way that it is structurally simple and achieves high screening performance.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die dazwischen liegenden zweiten Querträger durch eine Unwucht angenähert in Kreisschwingungen versetzt werden.This object is achieved in that the second crossbeams in between are approximately caused to oscillate in a circle by an unbalance.
Der konstruktiv sehr einfache Unwuchtantrieb übernimmt die Bewegung der dazwischen liegenden zweiten Querträger, so daß eine bewegliche Lagerung nur noch für die direkt angetriebenen Querträger erforderlich ist.' Die übrigen Querträger können dagegen an Maschinenteilen, insbesondere am Siebkasten, befestigt sein, der durch den Exzenter bewegt wird.The structurally very simple unbalance drive takes over the movement of the second crossbeams in between, so that movable support is only required for the directly driven crossbeams. ' The other cross members, however, can be fastened to machine parts, in particular to the screen box, which is moved by the eccentric.
Konstruktion und Antrieb werden besonders dann vereinfacht, wenn die Unwucht auf einer Welle befestigt ist, die mit mindestens einem Exzenter die ersten Querträger antreibt. Vorzugsweise wird vorgeschlagen, daß die Welle in den Maschinenteilen, insbesondere dem Siebkasten, gelagert ist, an denen die zweiten Querträger befestigt sind.Construction and drive are particularly simplified if the imbalance is attached to a shaft that drives the first crossbeam with at least one eccentric. It is preferably proposed that the shaft be mounted in the machine parts, in particular the screen box, to which the second cross members are attached.
Eine optimale Kräfteverteilung wird dann erreicht, wenn die Welle im Schwerpunkt des Siebkastens gelagert ist. Es läßt sich nicht nur die Größe der Unwucht verstellen, sondern es können auch siebtechnische Probleme dadurch gelöst werden, daß Unwucht und Exzenter relativ zueinander drehverstellbar sind.An optimal distribution of forces is achieved when the shaft is supported in the center of gravity of the screen box. Not only can the size of the unbalance be adjusted, but also sieving problems can be solved in that the unbalance and eccentric can be rotated relative to one another.
Zwei Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen:
- Fig. 1 einen senkrechten Längsschnitt durch ein erstes Ausführungsbeispiel;
- Fig. 2 einen Schnitt nach A-A in Fig. 1;
- Fig. 3 einen senkrechten Längsschnitt durch ein zweites Ausführungsbeispiel; und
- Fig. 4 einen Schnitt nach A-A in Fig. 3.
- Figure 1 is a vertical longitudinal section through a first embodiment.
- Fig. 2 shows a section along AA in Fig. 1;
- 3 shows a vertical longitudinal section through a second embodiment; and
- 4 shows a section according to AA in FIG. 3.
Die Siebmaschine weist einen Siebkasten mit zwei Seitenwangen 1, 2 auf, die senkrecht und zueinander parallel verlaufen und zwischen denen rechtwinklig die Querträger 3, 4 liegen. Während die ersten Querträger 3 an den Seitenwangen drehbeweglich gelagert sind, sind die dazwischen befindlichen zweiten Querträger 4 an den Seitenwangen 1, 2 unbeweglich fest. Die ersten und zweiten Querträger 3, 4 wechseln einander ab, so daß bei einer schwenkenden Hin- und Herbewegung der ersten Querträger 3 die oberhalb der Querträger 3, 4 befindlichen flexiblen Siebmatten 5 abwechselnd gestreckt und gestaucht werden.The screening machine has a screen box with two
Die Antriebsachse der ersten Querträger 3 sind durch beide Seitenwangen 1, 2 hindurchgesteckt und dort an Kipphebeln 6 befestigt, die im wesentlichen senkrecht stehen und mit ihren Oberseiten an einer Koppelstange 7 befestigt sind. Die Koppelstange ist wiederum über einen Gelenkstab mit einem Ringelement 9 verbunden, das auf einem Exzenter 10 befestigt ist. Der Exzenter 10 sitzt auf einer Welle 11, die über ein Getriebe 12 von einem Elektromotor 13 angetrieben ist. Damit erzeugt der Elektromotor 13 über die vorgenannten Glieder ein regelmäßiges Hin- und Herschwenken der Querträger 3 um ihre Längsachsen.The drive axis of the
Im Ausführungsbeispiel ist die Welle 11 mit den zwei endseitigen Exzentern 10 mittig angenähert im Schwerpunkt der Maschine parallel zu den Querträgern angeordnet, so daß zu beiden Seiten der Welle 11 und der Exzenter 10 Gelenkstäbe 8 und Koppelstangen 7 angeordnet sind, wobei eine Koppelstange 7 die eine Hälfte der Querträger 3 und die andere gegenüberliegende waagerechte Koppelstange 7 die andere Hälfte der Querträger 3 über Kipphebel 6 antreibt.In the exemplary embodiment, the
Auf der Welle 11, die in den Seitenwangen 1, 2 drehbar gelagert ist, sind auf beiden Außenseiten der Seitenwangen 1, 2 sektorförmige Unwuchtelemente 14 befestigt, die gegenüber der Welle und damit auch den Exzentern 10 drehverstellbar sind. Durch diese Unwuchtelemente 14, die beide im selben Winkel, und damit zueinander parallel eingestellt sind, wird der gesamte Siebkasten in Schwingungen gesetzt. Hierzu ist die Unterseite des Siebkastens bzw. sind die Unterseiten beider Seitenwangen 1, 2 auf elastische Lager 15, insbesondere Federelemente, gestellt.Sector-
Durch die Unwucht 14 werden die Querträger 4 exakt oder angenähtert in Kreisschwingungen versetzt, die darüber hinaus die Schwingbewegungen der Querträger 3 überlagern, da auch diese Querträger 3 den Kreisschwingungen ausgesetzt sind. Es werden damit nicht nur Siebleistung und Transport des Siebgutes verbessert, sondern es wird auch die Selbstreinigung erhöht.Due to the
In einer nicht dargestellten Alternative können auch die dazwischen liegenden Träger 4 kippbeweglich durch einen zweiten Kippantrieb angetrieben sein. Auch hier können auf der Welle des zweiten Kippantriebs Exzenter befestigt werden.In an alternative, not shown, the supports 4 located in between can also be driven in a tilting manner by a second tilting drive. Here too, eccentrics can be attached to the shaft of the second tilt drive.
Das Ausführungsbeispiel nach den Figuren 3 und 4 unterscheidet sich von dem nach den Figuren 1 und 2 dadurch, daß die Querträger 3 durch seitliche Holme 16 miteinander verbunden sind, die sich gegenüber den Seitenwänden parallel zur Siebmaschinenlängsrichtung bewegen. Hierbei liegen die Holme 16 auf senkrechten Lenkern 17 auf. Diese hin- und herschwingenden Lenker 17 können aber auch gegenüber den Holmen schräggestellt sein, um den Transport des Siebgutes zusätzlich zu unterstützen.The exemplary embodiment according to FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 in that the
Weiterhin ist es möglich, die Siebmaschine als Doppeldeck auszuführen, d.h. zwei Siebflächen mit ersten und zweiten Querträgern parallel übereinander anzuordnen und anzutreiben. Ferner kann aber auch über dem angetriebenen Siebdeck nach Fig. 1 oder Fig. 3 ein zweites Siebdeck befestigt werden, dessen Querträger nur über die Unwucht angetrieben sind und das mit größeren Öffnungsweiten als Schondeck dient.It is also possible to design the screening machine as a double deck, i.e. Arrange and drive two screen surfaces with the first and second cross members in parallel one above the other. Furthermore, a second screen deck can also be fastened over the driven screen deck according to FIG. 1 or FIG. 3, the cross member of which is driven only via the unbalance and which serves as a protective deck with larger opening widths.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89112565T ATE93420T1 (en) | 1988-07-14 | 1989-07-10 | SCREENING MACHINE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3823896A DE3823896A1 (en) | 1988-07-14 | 1988-07-14 | SCREENING MACHINE |
DE3823896 | 1988-07-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0350830A2 true EP0350830A2 (en) | 1990-01-17 |
EP0350830A3 EP0350830A3 (en) | 1990-12-27 |
EP0350830B1 EP0350830B1 (en) | 1993-08-25 |
Family
ID=6358673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89112565A Expired - Lifetime EP0350830B1 (en) | 1988-07-14 | 1989-07-10 | Screening machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0350830B1 (en) |
JP (1) | JPH02169073A (en) |
AT (1) | ATE93420T1 (en) |
DE (2) | DE3823896A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103623997A (en) * | 2013-11-30 | 2014-03-12 | 信宜市恒大机械设备厂 | Vibrating screen |
CN107931114A (en) * | 2017-12-25 | 2018-04-20 | 郑州丽福爱生物技术有限公司 | One kind rotates screening type sandstone processing unit |
CN108526005A (en) * | 2018-04-19 | 2018-09-14 | 张慧芳 | A kind of vibrating screen for granular materials optional equipment with intermittent feeding function |
CN114226223A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Asphalt mixture screening device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06107315A (en) * | 1992-09-29 | 1994-04-19 | Matsuura Kikai Seisakusho:Kk | Conveyor |
AT175U1 (en) * | 1994-05-20 | 1995-04-25 | Eduard Mannsberger Ges M B H I | SWINGING OR SHAKER SCREEN ARRANGEMENT |
DE102019003163A1 (en) * | 2019-05-06 | 2020-11-12 | Hein, Lehmann Gmbh | Flip-Flow Screening Machine |
DE102020002308B3 (en) * | 2020-03-06 | 2020-12-03 | WIMA Wilsdruffer Maschinen- und Anlagenbau GmbH | Sieve device, in particular flip-flop sieve device |
CN112170173B (en) * | 2020-09-22 | 2021-07-20 | 灵山县建灵投资有限公司 | Preparation method of concrete water reducing agent |
CN112191510A (en) * | 2020-10-19 | 2021-01-08 | 安徽黎搏装饰工程有限公司 | Screening plant for construction |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1275339B (en) * | 1967-07-13 | 1968-08-14 | Albert Wehner | Sieving machine |
DE3411719A1 (en) * | 1983-04-11 | 1984-10-11 | Binder & Co AG, Gleisdorf, Steiermark | Screen device |
EP0197191A2 (en) * | 1985-04-03 | 1986-10-15 | Carl Schenck Ag | Screening machine with a flexible screen bottom |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1206372B (en) * | 1964-09-26 | 1965-12-09 | Albert Wehner | Screen grate |
JPS4713022U (en) * | 1971-03-16 | 1972-10-16 | ||
DE2158128C3 (en) * | 1971-11-24 | 1980-06-04 | Hein, Lehmann Ag, 4000 Duesseldorf | Sieve device |
JPS5551578U (en) * | 1978-09-30 | 1980-04-04 | ||
JPS592545A (en) * | 1982-06-24 | 1984-01-09 | Mitsubishi Electric Corp | Manufacture of yoke |
-
1988
- 1988-07-14 DE DE3823896A patent/DE3823896A1/en not_active Withdrawn
-
1989
- 1989-07-10 EP EP89112565A patent/EP0350830B1/en not_active Expired - Lifetime
- 1989-07-10 DE DE89112565T patent/DE58905369D1/en not_active Expired - Lifetime
- 1989-07-10 AT AT89112565T patent/ATE93420T1/en not_active IP Right Cessation
- 1989-07-14 JP JP1180628A patent/JPH02169073A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1275339B (en) * | 1967-07-13 | 1968-08-14 | Albert Wehner | Sieving machine |
DE3411719A1 (en) * | 1983-04-11 | 1984-10-11 | Binder & Co AG, Gleisdorf, Steiermark | Screen device |
EP0197191A2 (en) * | 1985-04-03 | 1986-10-15 | Carl Schenck Ag | Screening machine with a flexible screen bottom |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103623997A (en) * | 2013-11-30 | 2014-03-12 | 信宜市恒大机械设备厂 | Vibrating screen |
CN107931114A (en) * | 2017-12-25 | 2018-04-20 | 郑州丽福爱生物技术有限公司 | One kind rotates screening type sandstone processing unit |
CN108526005A (en) * | 2018-04-19 | 2018-09-14 | 张慧芳 | A kind of vibrating screen for granular materials optional equipment with intermittent feeding function |
CN114226223A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Asphalt mixture screening device |
Also Published As
Publication number | Publication date |
---|---|
EP0350830B1 (en) | 1993-08-25 |
ATE93420T1 (en) | 1993-09-15 |
EP0350830A3 (en) | 1990-12-27 |
DE3823896A1 (en) | 1990-01-18 |
JPH02169073A (en) | 1990-06-29 |
DE58905369D1 (en) | 1993-09-30 |
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