WO1988003061A1 - Vertical screening device - Google Patents

Vertical screening device Download PDF

Info

Publication number
WO1988003061A1
WO1988003061A1 PCT/SE1987/000466 SE8700466W WO8803061A1 WO 1988003061 A1 WO1988003061 A1 WO 1988003061A1 SE 8700466 W SE8700466 W SE 8700466W WO 8803061 A1 WO8803061 A1 WO 8803061A1
Authority
WO
WIPO (PCT)
Prior art keywords
feed screw
screening device
cylinder screen
end portion
screening
Prior art date
Application number
PCT/SE1987/000466
Other languages
French (fr)
Inventor
Ingmar Andrén
Original Assignee
Lindema Kommanditbolag
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 Lindema Kommanditbolag filed Critical Lindema Kommanditbolag
Priority to UA4614108A priority Critical patent/UA25906A1/en
Priority to DE8787907029T priority patent/DE3777662D1/en
Priority to AT87907029T priority patent/ATE73693T1/en
Publication of WO1988003061A1 publication Critical patent/WO1988003061A1/en
Priority to DK338588A priority patent/DK161306C/en
Priority to SU894614108A priority patent/RU2023518C1/en

Links

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
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators

Definitions

  • the present invention relates to a vertical screen ⁇ ing device having at least one cylinder screen, said screeening device being adapted to be connected with its lower end portion to a similar screening device or a drive unit and, with its upper end portion, to a similar screening device or a distributor device, said screening device further being adapted, together with the other devices connected thereto, to be im ⁇ parted a movement of rotation.
  • the screening device may thus be of the type disclosed in Swedish Patent
  • the screening device comprises a bearing device for a feed screw cooperating with the cylinder screen, said bearing device being disposed within the cylinder screen and fixedly connected thereto, and said feed screw being connected through a link extending outside the periphery of the cylinder screen, to- a fixed point provided outside the screening device for holding the feed screw still.
  • the advantage of a stationary feed screw is that the screening material to be fed is imparted a predetermined feed rate, and that the material moves helically downwards in the cylinder screen. This means improved distribution and mixing of the screening material.
  • the present invention has made it possible to use a stationary feed screw in the screening device contemplated.
  • Fig. 1 shows the screening device in vertical cross-section.
  • Fig. 2 shows the bearing device in vertical cross-section.
  • Fig. 3 shows the bearing device from above.
  • Fig. 4 is a section taken along the line A-A in Fig. 2
  • Fig. 5 is a top plan view showing the link with the parts associated therewith.
  • the screening device 1 comprises a bearing device 3, disposed within the cylinder screen 2 and fixedly connected thereto, for a feed screw 4 cooperating with the cylinder screen 2 and connected through a link 5 extending outside the periphery of the cylinder screen 2 , to a fixed point 6 provided outside the screening device 1 for holding the feed screw 4 sta ⁇ tionary. More specifically, the fixed point 6 is lo- cated at a fixed outer cylinder disposed outside the screening device 1.
  • the bearing device 3 for the feed screw 4 con ⁇ stitutes a fixed connection for transmitting rotational and torsional forces, between the upper and lower end portions 7 and 8, respectively, of the screening device 1, which suitably consist of flanges.
  • the cy ⁇ linder screen 2 is however fixedly connected to only one end portion 7 r there being a space defined between the cylinder screen 2 and the other end portion 8. This space is used for the link 5 of the feed screw 4.
  • the link 5 of the feed screw 4 is fixed to a flange 9 fixedly connected to the feed screw 4 and located opposite the end flange 8 and opposite a cor ⁇ responding flange 10 on the cylinder screen 2. Sealing means 11 are provided between the flanges 8, 9 and 10. As seen in the drawings, the sealing means 11, here being brushes, are mounted on the flange 9 so as to engage the flanges 8 and 10.
  • the bearing device 3 comprises a cylindrical tube 12 which is lower than the screening device 1.
  • the feed screw 4 is mounted around the tube 12 by means of a substantially equally high tubular cen- tral body 13, while the screw 14 itself extends with a fully open part above the tubular central body 13.
  • the body 13 suitably consists of a thin-walled steel cylinder on the outer side of which a steel helix forming the screw 14 proper is wound and fixed by welding.
  • a rubber helix 15 is fixed to the underside of the steel helix 14.
  • the tubular central body 13 is provided on its inside with rollers 16 and 17 which for guiding the screw 4 in both the radial and the axial sense, are adapted to roll on tracks 18 and 19 provided at the outer side of the cylindrical tube 12 of the bearing device 3.
  • the rollers 16, guiding the screw 4 radially are suitably six in number and evenly distributed pairwise along the periphery, while the rollers 17, guiding the screw 4 axially, are suitably four in number and pairwise diametrically disposed.
  • the tracks 18 and 19 preferable consist of plastic rings.
  • the bearing device 3 comprises a number of axially extending rods 20 which are disposed above the cylindrical tube 12 and evenly distributed along the inner periphery of the feed screw 4. Further, between the cylindrical tube 12 and the axially extending rods 20 there is provided a radial plate 21.
  • the bearing device 3 serves to transmit rotational and torsional forces between the flanges 7 and 8.
  • the cylinder screen 2 is provided with an inwardly directed cone 22 guiding the screening material so that it will not unecessarily interfere with the brushes serving as sealing means 11.
  • the interconnection of two screening devices 1 according to the invention can be brought about by connecting the flange 7 of one device directly to the flange 8 of the other device.
  • use may however be made of a flanged ring or the like as coupling means.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Filtration Of Liquid (AREA)
  • Screen Printers (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Earth Drilling (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Threshing Machine Elements (AREA)

Abstract

Vertical screening device (1) having at least one cylinder screen (2) and connectible with its lower end portion (8) to a similar screening device or a drive unit and, with its upper end portion (7), to a similar screening device or a distributor device. The screening device is adapted, together with the other devices connected to it, to be imparted a movement of rotation. The invention is characterized in that the screening device (1) comprises a bearing device (3) for a feed screw (4) cooperating with the cylinder screen (2). The bearing device (3) is disposed within the cylinder screen (2) and fixedly connected thereto. The feed screw (4) is connected through a link (5) extending outside the periphery of the cylinder screen (2), to a fixed point (6) provided outside the screening device (1) for holding the feed screw (4) still.

Description

VERTICAL SCREENING DEVICE
The present invention relates to a vertical screen¬ ing device having at least one cylinder screen, said screeening device being adapted to be connected with its lower end portion to a similar screening device or a drive unit and, with its upper end portion, to a similar screening device or a distributor device, said screening device further being adapted, together with the other devices connected thereto, to be im¬ parted a movement of rotation. The screening device may thus be of the type disclosed in Swedish Patent
434,349, although it must not necessarily be imparted an oscillating angular velocity. The screening device is so designed that it can be removed laterally once the connection with the other devices has been undone. The novel features of the invention reside in that the screening device comprises a bearing device for a feed screw cooperating with the cylinder screen, said bearing device being disposed within the cylinder screen and fixedly connected thereto, and said feed screw being connected through a link extending outside the periphery of the cylinder screen, to- a fixed point provided outside the screening device for holding the feed screw still. The advantage of a stationary feed screw is that the screening material to be fed is imparted a predetermined feed rate, and that the material moves helically downwards in the cylinder screen. This means improved distribution and mixing of the screening material. Thus, the present invention has made it possible to use a stationary feed screw in the screening device contemplated.
The invention will be described in more detail hereinbelow with reference to the accompanying drawings showing, by way of example only, one embodiment of the screening device. Fig. 1 shows the screening device in vertical cross-section. Fig. 2 shows the bearing device in vertical cross-section. Fig. 3 shows the bearing device from above. Fig. 4 is a section taken along the line A-A in Fig. 2, and Fig. 5 is a top plan view showing the link with the parts associated therewith.
The screening device 1 comprises a bearing device 3, disposed within the cylinder screen 2 and fixedly connected thereto, for a feed screw 4 cooperating with the cylinder screen 2 and connected through a link 5 extending outside the periphery of the cylinder screen 2 , to a fixed point 6 provided outside the screening device 1 for holding the feed screw 4 sta¬ tionary. More specifically, the fixed point 6 is lo- cated at a fixed outer cylinder disposed outside the screening device 1.
The bearing device 3 for the feed screw 4 con¬ stitutes a fixed connection for transmitting rotational and torsional forces, between the upper and lower end portions 7 and 8, respectively, of the screening device 1, which suitably consist of flanges. The cy¬ linder screen 2 is however fixedly connected to only one end portion 7 r there being a space defined between the cylinder screen 2 and the other end portion 8. This space is used for the link 5 of the feed screw 4. The link 5 of the feed screw 4 is fixed to a flange 9 fixedly connected to the feed screw 4 and located opposite the end flange 8 and opposite a cor¬ responding flange 10 on the cylinder screen 2. Sealing means 11 are provided between the flanges 8, 9 and 10. As seen in the drawings, the sealing means 11, here being brushes, are mounted on the flange 9 so as to engage the flanges 8 and 10.
As appears from Fig. 5, the link 5 is fixed to the outer side of the flange 9 outwardly of the sealing means 11, whereby the link 5 will in no way interfere therewith. The bearing device 3 comprises a cylindrical tube 12 which is lower than the screening device 1. The feed screw 4 is mounted around the tube 12 by means of a substantially equally high tubular cen- tral body 13, while the screw 14 itself extends with a fully open part above the tubular central body 13. The body 13 suitably consists of a thin-walled steel cylinder on the outer side of which a steel helix forming the screw 14 proper is wound and fixed by welding. A rubber helix 15 is fixed to the underside of the steel helix 14.
The tubular central body 13 is provided on its inside with rollers 16 and 17 which for guiding the screw 4 in both the radial and the axial sense, are adapted to roll on tracks 18 and 19 provided at the outer side of the cylindrical tube 12 of the bearing device 3. The rollers 16, guiding the screw 4 radially, are suitably six in number and evenly distributed pairwise along the periphery, while the rollers 17, guiding the screw 4 axially, are suitably four in number and pairwise diametrically disposed. The tracks 18 and 19 preferable consist of plastic rings.
As best seen in Fig. 2, the bearing device 3 comprises a number of axially extending rods 20 which are disposed above the cylindrical tube 12 and evenly distributed along the inner periphery of the feed screw 4. Further, between the cylindrical tube 12 and the axially extending rods 20 there is provided a radial plate 21. By this arrangement and by the bearing device 3 being directly or indirectly connected to the flanges 7 and 8 at its upper and lower portions, the bearing device 3 serves to transmit rotational and torsional forces between the flanges 7 and 8.
At its lower end, the cylinder screen 2 is provided with an inwardly directed cone 22 guiding the screening material so that it will not unecessarily interfere with the brushes serving as sealing means 11. The interconnection of two screening devices 1 according to the invention can be brought about by connecting the flange 7 of one device directly to the flange 8 of the other device. As in the patent mentioned above, use may however be made of a flanged ring or the like as coupling means.
The invention is not restricted to the embodiment described above and illustrated in the drawings, but may be modified within the spirit and scope of the accompanying claims.

Claims

1. A vertical screening device having at least one cylinder screen, said screening device (1) being adapted to be connected with its lower end portion (8) to a similar screening device or a drive unit and, with its upper end portion (7 ), to a similar screen¬ ing device or a distributor device, said screening de¬ vice (1) further being adapted, together with the other devices connected thereto, to be imparted a movement of rotation, c h a r a c t e r i z e d in that the screening device (1) comprises a bearing device (3) for a feed screw (4) cooperating with the cylinder screen (2), said bearing device being disposed within the cylinder screen (2) and fixedly connected there¬ to, and said feed screw (4) being connected through a link (5) extending outside the periphery of the cylinder screen (2), to a fixed point (6) provided outside the screening device (1) for holding the feed screw (4) still.
2. Vertical screening device as claimed in claim 1, c h a r a c t e r i z e d in that the bearing device (3) for the feed screw (4) constitutes a fixed con¬ nection transmitting rotational and torsional forces between the upper (7) and lower (8) end portions, suitably consisting of flanges, of the screening de- vice (1), while the cylinder screen (2) is fixedly connected only to one end portion (7), a space being provided between the cylinder screen (2) and said other end portion (8) for said link (5) of the feed screw (4 ) .
3. Vertical screening device as claimed in claim 2, c h a r a c t e r i z e d in that the link (5) of the feed screw (4) is fixed to a flange (9) fixedly con¬ nected to the feed screw (4) and located opposite the flange (8) forming said other end portion of the screen- ing device (1), and opposite a corresponding flange (10) on the cylinder screen (2), there being provided sealing means (11) between said three flanges (8-10).
4. Vertical screening device as claimed in claim 2 or 3, c h a r a c t e r i z e d in that the bearing device (3) for the feed screw (4) comprises a cylin¬ drical tube (12) which is lower than the screening device (1) and around which the feed screw (4) is mounted by means of a substantially equally high tubu- lar central body (13), the feed screw (4) extending with a fully open part above said tubular central body (13).
5. Vertical screening device as claimed in claim 4, c h a r a c t e r i z e d in that the tubular central body (13) of the feed screw (4) is provided on its inner side with rollers (16, 17) which, for guiding the screw (4) both radially and axially, are adapted to roll on tracks (18, 19) provided at the outer side of the cylindrical tube (12) of the bearing device (3).
6. Vertical screening device as claimed in claim 5, c h a r a c t e r i z e d in that the bearing device (3) for the feed screw (4) comprises a number of axially extending rods (20) disposed above the cylindrical tube (12) and evenly distributed along the inner periphery of the feed screw ( ) .
7. Vertical screening device as claimed in claim 6, c h a r a c t e r i z e d in that the bearing device (3) is- provided with a radially extending plate (21) between the cylindrical tube (12) and the axially extending rods (20).
PCT/SE1987/000466 1986-10-22 1987-10-14 Vertical screening device WO1988003061A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
UA4614108A UA25906A1 (en) 1986-10-22 1987-10-14 SORTING DEVICE
DE8787907029T DE3777662D1 (en) 1986-10-22 1987-10-14 VERTICAL SCREEN ARRANGEMENT.
AT87907029T ATE73693T1 (en) 1986-10-22 1987-10-14 VERTICAL SCREEN ARRANGEMENT.
DK338588A DK161306C (en) 1986-10-22 1988-06-21 Vertically oriented sighting device
SU894614108A RU2023518C1 (en) 1986-10-22 1989-04-21 Sorting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604513A SE455674B (en) 1986-10-22 1986-10-22 VERTICAL SALES DEVICE
SE8604513-5 1986-10-22

Publications (1)

Publication Number Publication Date
WO1988003061A1 true WO1988003061A1 (en) 1988-05-05

Family

ID=20366037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000466 WO1988003061A1 (en) 1986-10-22 1987-10-14 Vertical screening device

Country Status (9)

Country Link
US (1) US4957618A (en)
EP (1) EP0327564B1 (en)
AU (1) AU8150187A (en)
CA (1) CA1313846C (en)
DE (1) DE3777662D1 (en)
DK (1) DK161306C (en)
SE (1) SE455674B (en)
UA (1) UA25906A1 (en)
WO (1) WO1988003061A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014516A1 (en) * 1990-03-23 1991-10-03 Lindéma Kommanditbolag Vertical screening device with feeding screw

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5482556A (en) * 1990-10-09 1996-01-09 Nordson Corporation Apparatus for mounting and moving coating dispensers
US5095811A (en) * 1990-10-09 1992-03-17 Nordson Corporation Automotive powder coating booth with modulated air flow
AT402028B (en) * 1995-04-28 1997-01-27 Morawetz Oskar Compost screen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434349B (en) * 1982-12-01 1984-07-23 Lindema Kb VERTICAL CYLINDERSALL CLEANING MACHINE
EP0185843A2 (en) * 1984-12-11 1986-07-02 Satake Engineering Co., Ltd. Vertical type screening machine for granular material
DK150100B (en) * 1978-11-28 1986-12-08 Uk Nii Mekh Elek Selsk Khoz MACHINE FOR CLEANING AND / OR SORTING LOST MATERIAL

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US263564A (en) * 1882-08-29 Niels nielsen
US745743A (en) * 1903-02-05 1903-12-01 Eugene T S Thayer Rag-dusting machine.
SU435867A1 (en) * 1972-11-09 1974-07-15 институт Серго Орджоникидзе SEPARATOR
SU1256785A1 (en) * 1984-09-13 1986-09-15 Минский научно-исследовательский институт строительных материалов Classifier
SU1458003A1 (en) * 1986-10-23 1989-02-15 Государственный Всесоюзный Научно-Исследовательский Институт Цементной Промышленности Screw hydraulic classifier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK150100B (en) * 1978-11-28 1986-12-08 Uk Nii Mekh Elek Selsk Khoz MACHINE FOR CLEANING AND / OR SORTING LOST MATERIAL
SE434349B (en) * 1982-12-01 1984-07-23 Lindema Kb VERTICAL CYLINDERSALL CLEANING MACHINE
EP0185843A2 (en) * 1984-12-11 1986-07-02 Satake Engineering Co., Ltd. Vertical type screening machine for granular material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014516A1 (en) * 1990-03-23 1991-10-03 Lindéma Kommanditbolag Vertical screening device with feeding screw
AU631494B2 (en) * 1990-03-23 1992-11-26 Lindema Kommanditbolag Vertical screening device with feeding screw

Also Published As

Publication number Publication date
CA1313846C (en) 1993-02-23
DE3777662D1 (en) 1992-04-23
DK161306B (en) 1991-06-24
US4957618A (en) 1990-09-18
UA25906A1 (en) 1999-02-26
SE8604513L (en) 1988-04-23
EP0327564A1 (en) 1989-08-16
SE8604513D0 (en) 1986-10-22
AU8150187A (en) 1988-05-25
DK338588A (en) 1988-06-21
DK161306C (en) 1991-12-02
DK338588D0 (en) 1988-06-21
EP0327564B1 (en) 1992-03-18
SE455674B (en) 1988-08-01

Similar Documents

Publication Publication Date Title
GB8724576D0 (en) Wheel hub assembly
EP0260034B1 (en) Rotatable supply and discharge unit of a centrifugal separator
DE3307625C2 (en) Articulated helicopter rotor
WO1988003061A1 (en) Vertical screening device
GB2084294A (en) Feed roll apparatus
US4636277A (en) Tire building drum
TW328984B (en) Drain cleaning apparatus
GB2045884A (en) Safety guards for cardan shafts
US5310287A (en) Method and device for driving a pile or the like into and out of the ground
ATE282157T1 (en) PROTECTIVE DEVICE FOR A DRIVE ARRANGEMENT WITH A DOUBLE UNIVERSAL JOINT
US4763854A (en) Container for continuous supply of wire
BR9600245A (en) Electric machine with a slip ring arrangement arranged outside the machine and process elongation for producing a slip ring arrangement
US3810571A (en) Self-centering rolls
ES279733U (en) Mechanical seal.
GB1588373A (en) Centrifuges
CN214326245U (en) Driving shaft for belt conveyor
US4077679A (en) Rotary drum for rotary autoclave
CN1005426B (en) Rotatable drum assembly
RU2023518C1 (en) Sorting device
US5909788A (en) Coupling assembly component
DE3263559D1 (en) Ball valve
SU1627639A1 (en) Isolating reducer
US6325379B1 (en) Shaft assembly having improved seal
SU1754874A1 (en) Core barrel
JPH08141789A (en) Screw type dehydrator

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU DK HU JP SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1987907029

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1987907029

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1987907029

Country of ref document: EP