EP0202475B1 - Vorrichtung zum Auswaschen von organischen und lehmartigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen - Google Patents

Vorrichtung zum Auswaschen von organischen und lehmartigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen Download PDF

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Publication number
EP0202475B1
EP0202475B1 EP86105250A EP86105250A EP0202475B1 EP 0202475 B1 EP0202475 B1 EP 0202475B1 EP 86105250 A EP86105250 A EP 86105250A EP 86105250 A EP86105250 A EP 86105250A EP 0202475 B1 EP0202475 B1 EP 0202475B1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
chute
machine frame
height adjustment
adjustment mechanism
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
EP86105250A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0202475A2 (de
EP0202475A3 (en
Inventor
Klaus Bleh
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.)
Rohr GmbH
Original Assignee
Rohr GmbH
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 Rohr GmbH filed Critical Rohr GmbH
Publication of EP0202475A2 publication Critical patent/EP0202475A2/de
Publication of EP0202475A3 publication Critical patent/EP0202475A3/de
Application granted granted Critical
Publication of EP0202475B1 publication Critical patent/EP0202475B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating

Definitions

  • the invention relates to a device for washing out organic and clay-like impurities from continuously supplied coarse and fine-grained solids, such as freshly dredged and processed gravel, with a chute and shower for the washing liquid which feed the material, consisting of an endless conveyor belt supported on support rollers , which are mounted on the machine frame in such a way that a first part of the conveyor belt is arranged downstream of the chute and is provided as a washing trough, and the other part of the conveyor belt is arranged below the chute and ascending against the direction of flow of the material supplied, the conveyor belt counter to the direction of flow of the Material fed via the chute is driven such that the conveyor belt on the middle support of the machine frame is guided in a height-adjustable manner on an upper pressure roller, and a deflection for this pressure roller for the first part of the conveyor belt role connects, which is assigned a further external deflection roller, a horizontally extending part of the conveyor belt is provided between the deflection rollers and that an outer deflection roller of the belt part located below
  • a device with these features is known (DE-B-2 542 940), the conveyor belt designed as a smooth belt being arranged on both end edges between tightly fitting housing side parts.
  • the device can be adapted to any degree of contamination and also to the respective type of material.
  • the pressure roller arranged on the central stand the depth of the washing trough is changed, a small flow being achieved at a large depth and, conversely, a larger flow at a shallow depth.
  • the machine must therefore be adjusted to the composition of the material being conveyed and if the composition of the material being conveyed changes, it is always necessary to make adjustments to the machine in order to change the dimension of the washing trough. This involves considerable effort, since the machine has to be turned off each time and the position of the various deflection rollers on the conveyor belt has to be changed.
  • the invention has for its object to change the effect of the separation distance with a stepless adjustment after making a basic setting without changing the overflow heights, widths and speeds in order to be able to constantly adapt to the different task material.
  • the machine frame is arranged on a base frame, that the machine frame on one side of the base frame is mounted transversely to the running direction of the conveyor belt on a support and that the machine frame is arranged on the opposite side on a height adjustment device .
  • An advantageous embodiment consists in that a screw spindle mounted on the machine frame and the base frame is provided as the height adjustment device and can be driven by a geared motor.
  • a hydraulic or pneumatic lifting unit or a cable drive is provided as the height adjustment device.
  • the settings of the height adjustment device via limit switches, light barriers, proximity switches and the like. are set.
  • a basic setting is first made on the machine by moving the height-adjustable pressure roller to its lowest position, so that a washing trough is created in which all the fine material, namely fine sand, mineral raw materials and the like, is retained.
  • the bed depth can be changed by lowering or raising the entire machine frame, so that an immediate reaction when the proportion of fine sand is changed in the task of the sand-water mixture is possible without the machine having to be shut down.
  • the device shown in the drawings has a machine frame 1, which is composed of individual carriers 2, 26, which are clad with an inner lining to form a container 27 with a wood-water outlet funnel 28.
  • a machine frame 1 which is composed of individual carriers 2, 26, which are clad with an inner lining to form a container 27 with a wood-water outlet funnel 28.
  • pressure or deflection rollers are held, around which a conveyor belt 29 is guided.
  • the upper part of the conveyor belt 29 is used, with a part 9 of the conveyor belt 29 arranged downstream of the chute 12 forming the actual washing trough 30 and a further part 11 of the conveyor belt 29 arranged below the chute 12 so as to rise against the direction of flow of the material being fed is.
  • brakes 50 In the area of part 11 there are brakes 50.
  • the endless conveyor belt 29 is supported on the middle carrier 2 on the upper pressure roller 18 and at the bottom on a deflection roller 31, the pressure roller 18 being adjustable in height.
  • the conveyor belt 29 is guided over a deflection roller 6 and an external further deflection roller 32, which also serves as a tensioning roller, a horizontally extending part 33 of the conveyor belt 29 being provided between the rollers 6 and 32.
  • This horizontally extending part 33 of the conveyor belt 29 has the meaning of a calming section.
  • the physical effect of this calming section 33 results from the fact that when coarse and fine-grained solids (gravel, sand and the like) are separated from impurities, the frictional force between the conveyor belt and the granular solids to be cleaned is greater than the counter-current force caused by the Washing liquid.
  • the washing liquid thus takes along all the particles to be separated out which, due to their specific weight, float in the liquid in such a way that the opposing frictional force does not take these particles with them by the movement of the conveyor belt 29.
  • the fine sand discharge can be influenced by changing the depth of the washing trough 30.
  • the depth of the washing trough can be brought about by adjusting the pressure roller 18 or the roller 7. For this purpose, however, a number of settings, including adjustment of the roller 31, are required each time, which is complex and leads to downtimes of the device.
  • the part 11 of the conveyor belt 29 located below the chute 12 is guided in a kind of wave movement over support rollers 17 or pressure rollers 18 'and finally via a deflection roller 7 serving as a drive roller with the drive motor 34 .
  • the conveyor belt 29 is driven against the direction of flow of the material fed in via the chute 12.
  • the conveyor belt 29 is located between the side walls 36 of the material collecting container 27.
  • This entire device described above is arranged on a rectangular base frame 3.
  • the device is here on a narrow side, i.e. supported transversely to the running direction of the conveyor belt 29 on a support 4, this support having stub axle 5 and the entire device can be pivoted vertically about this axis 5.
  • On the opposite side of the device it is supported on a height adjustment device 8, which can be designed differently.
  • a screw spindle 13 is attached between a carrier 26 on the device and the base frame 3 and is driven by a gear motor 14, the screw spindle 13 being fastened to the carrier 26 and the base frame 3 in each case at joints 15.
  • a pneumatic or hydraulic lifting unit can also be used, for example.
  • the depth of the washing trough 30 can be changed and thus also the flow rate of the washing liquid.
  • Sand found in nature contains fine grain 0.25 mm up to about 50%. Since a proportion of about 10 to 20% is required in the production of mixed sands for the concrete industry, the machine must be adjusted accordingly so that the fine sand is partially contaminated, i.e. is discharged via the belt part 9, while the used mixture is obtained via the belt part 11. If the proportion of fine sand changes, the depth of the washing trough must be adapted to these conditions. Appropriate markings on the height adjustment device 8 can be used to determine these values so that the operator can orientate themselves to them.
  • the various settings can also be defined via limit switches, light barriers or proximity switches and called up if necessary. This enables the machine to be automatically adapted to the various operating conditions.

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Structure Of Belt Conveyors (AREA)
EP86105250A 1985-05-18 1986-04-16 Vorrichtung zum Auswaschen von organischen und lehmartigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen Expired - Lifetime EP0202475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853517982 DE3517982A1 (de) 1985-05-18 1985-05-18 Vorrichtung zum auswaschen von organischen und lehmartigen verunreinigungen aus fortlaufend zugefuehrten grob- und feinkoernigen feststoffen
DE3517982 1985-05-18

Publications (3)

Publication Number Publication Date
EP0202475A2 EP0202475A2 (de) 1986-11-26
EP0202475A3 EP0202475A3 (en) 1989-08-23
EP0202475B1 true EP0202475B1 (de) 1991-11-13

Family

ID=6271105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105250A Expired - Lifetime EP0202475B1 (de) 1985-05-18 1986-04-16 Vorrichtung zum Auswaschen von organischen und lehmartigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen

Country Status (11)

Country Link
US (1) US4696736A (enrdf_load_stackoverflow)
EP (1) EP0202475B1 (enrdf_load_stackoverflow)
JP (1) JPH0722718B2 (enrdf_load_stackoverflow)
AT (1) AT394503B (enrdf_load_stackoverflow)
AU (1) AU577690B2 (enrdf_load_stackoverflow)
BE (1) BE904788A (enrdf_load_stackoverflow)
CH (1) CH667224A5 (enrdf_load_stackoverflow)
DE (2) DE3517982A1 (enrdf_load_stackoverflow)
FR (1) FR2581899B1 (enrdf_load_stackoverflow)
GB (1) GB2174927B (enrdf_load_stackoverflow)
IT (1) IT1204236B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839666C1 (enrdf_load_stackoverflow) * 1988-11-24 1990-02-01 Rohr Gmbh, 6701 Otterstadt, De
DE19738676C1 (de) * 1997-09-04 1999-06-24 Wolfgang Rohr Vorrichtung zum Auswaschen und Sortieren von organischen lehmartigen und sonstigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen
AU745251B2 (en) * 1998-04-08 2002-03-14 De Beers Consolidated Mines Limited Method and apparatus for processing a conglomerate
CN100441306C (zh) * 2006-08-28 2008-12-10 喻炳高 毛毡吸附选矿机

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US228915A (en) * 1880-06-15 John mcooll
US1316038A (en) * 1917-05-26 1919-09-16 Robert D Jackson Pulp-classifier.
US1519019A (en) * 1923-12-01 1924-12-09 Ore Reclamation Company Separator and classifier
US2314542A (en) * 1941-03-15 1943-03-23 Fred T Kern Apparatus for separating materials
FR916244A (fr) * 1942-11-14 1946-11-29 Perfectionnements apportés ou relatifs à la séparation des matières solides ayant différents poids spécitiques, au moyen d'agents liquides
US2929502A (en) * 1957-03-14 1960-03-22 Blue Channel Corp Apparatus for recovering meat from bony material by flotation
US2930484A (en) * 1958-01-08 1960-03-29 Oreclone Concentrating Corp Apparatus for concentrating ores
CH503508A (it) * 1968-08-23 1971-02-28 O M F P Di Tarcisio Pozzato & Apparecchio per la separazione di corpi solidi da liquidi di peso specifico inferiore, particolarmente per la separazione di sabbia dall'acqua
DE2263549C3 (de) * 1972-12-27 1975-06-05 Wolfgang 6701 Waldsee Rohr Vorrichtung zum Auswaschen von Verunreinigungen aus körnigen Feststoffen
FR2261065A1 (en) * 1974-02-19 1975-09-12 Rohr Wolfgang Gravel washing eqpt. with belt conveyor - sprays and sloping zig-zag belt section above horizontal section
US4092229A (en) * 1975-12-17 1978-05-30 Bhattacharya Bhairab C Thermal convection counter streaming sedimentation and forced convection galvanization method for controlling the sex of mammalian offspring
DE2542940C3 (de) * 1975-09-26 1980-01-31 Wolfgang 6701 Waldsee Rohr Vorrichtung zum Auswaschen von organischen und lehmartigen Verunreinigungen aus fortlaufend zugeführten grob- und feinkörnigen Feststoffen
US4055488A (en) * 1976-05-28 1977-10-25 Siri Systems, Inc. Wood cleaning and separating apparatus
US4169787A (en) * 1977-12-12 1979-10-02 Campbell Soup Company Apparatus and method for liquid separation of materials
JPS564307A (en) * 1979-06-20 1981-01-17 Mitsubishi Electric Corp Looper controller for continuous rolling mill
US4272363A (en) * 1979-07-11 1981-06-09 Cargile Jr Neil H Coal washing apparatus
SE441523C (sv) * 1980-02-22 1987-01-19 Laxa Bruks Ab Metod och anordning for uppsamling av mineralfibrer som bildas genom fibrering av en mineralsmelta
JPS5815017A (ja) * 1981-07-15 1983-01-28 Central Glass Co Ltd リン酸二石灰２水塩安定化剤
DE3148728C1 (de) * 1981-12-09 1982-12-16 Wolfgang 6720 Speyer Rohr Vorrichtung zum Auswaschen von organischen und Iehmartigen Verunreinigungen aus fortlaufend zugefuehrten grob- und feinkoernigen Feststoffen
AU571597B2 (en) * 1983-10-26 1988-04-21 Taylor, C.H. Magnetic recovery means
AU5290386A (en) * 1985-01-31 1986-08-07 Hunt, F.L. Material separation

Also Published As

Publication number Publication date
FR2581899B1 (fr) 1990-08-03
CH667224A5 (de) 1988-09-30
GB8610187D0 (en) 1986-05-29
JPH0722718B2 (ja) 1995-03-15
DE3682429D1 (de) 1991-12-19
DE3517982A1 (de) 1986-11-20
AT394503B (de) 1992-04-27
IT8683357A0 (it) 1986-05-16
AU5730786A (en) 1986-11-27
DE3517982C2 (enrdf_load_stackoverflow) 1987-06-11
BE904788A (fr) 1986-09-15
US4696736A (en) 1987-09-29
FR2581899A1 (fr) 1986-11-21
GB2174927A (en) 1986-11-19
EP0202475A2 (de) 1986-11-26
IT1204236B (it) 1989-03-01
ATA97786A (de) 1991-10-15
JPS62273063A (ja) 1987-11-27
AU577690B2 (en) 1988-09-29
EP0202475A3 (en) 1989-08-23
GB2174927B (en) 1988-05-11

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