GB2033242A - Screening Apparatus - Google Patents
Screening Apparatus Download PDFInfo
- Publication number
- GB2033242A GB2033242A GB7936400A GB7936400A GB2033242A GB 2033242 A GB2033242 A GB 2033242A GB 7936400 A GB7936400 A GB 7936400A GB 7936400 A GB7936400 A GB 7936400A GB 2033242 A GB2033242 A GB 2033242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- members
- screening apparatus
- support member
- secured
- 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.)
- Withdrawn
Links
- 238000012216 screening Methods 0.000 title claims abstract description 39
- 239000010419 fine particle Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4681—Meshes of intersecting, non-woven, elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
- B01D33/275—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces using contiguous impervious surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/28—Strainers not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/02—Filtering elements having a conical form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
- B01D29/445—Bar screens
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
In screening apparatus having a screen surface formed by a plurality of panels (12) each comprising a plurality of wires (18) secured in spaced relation to one another by cross-members (20) to define slit apertures (30) for the passage of fluid or fine particles, the cross-members being secured at their ends to elongate support members (22), failure of the joints between the cross- members (20) and support members (22) is rendered less likely by arranging the cross-members (20) to extend across, and be secured to, at least part of the width of the support member (22). Conveniently the ends of the cross-members are welded into slots in the support member, which support member may have a strengthening rib secured thereto and may be of T or cruciform cross- section. Additional reinforcing ribs (50) may be secured to the cross- members of a plurality of panels. The screening surface may be flat or curved, e.g. for use as a centrifuge basket. <IMAGE>
Description
SPECIFICATION
Screening Apparatus
The invention relates to screening apparatus and in particular to screening apparatus in which a screen surface is formed by a plurality of screen panels secured edge-to-edge, each panel having a plurality of wires secured in spaced relation by cross-members to define slit apertures for the passage of fluid or fine particles. The screening surface may be flat, curved or cylindrical, e.g.
conical, as in centrifuge drums or baskets.
In such centrifuge drums or baskets the panels, one or more of which may be trapezoidal, are usually secured together with the wires extending longitudinally of the drum and the crossmembers, which are arcuate as they extend circumferentially of the drum, welded to support bars extending along the juxtaposed edges of the adjacent panels.
The invention is particularly, but not exclusively, applicable to centrifuge drums which, in use, are rotated or/and vibrated to force fluid or fine particles to pass through the apertures in the drum, the residue being removed from the end of the drum.
It has been found in some applications, such as dewatering coal slurry, that the life of such drums is relatively short, one of the reasons being considered to be failure of the welded joints between the cross-members and the associated support members.
The present invention seeks to improve the reliability of such screening apparatus and to this end the cross-members are arranged to extend transversely of the support member and are secured thereto, e.g. welded, over at least part of the transversely extending portion of the crossmember.
Such an arrangement, permitting the crossmember to be welded to the support member over at least part of the width of the member, will generally provide a stronger joint, with greater resistance to panel flexure loads, than where the cross-member is merely butt-welded to the support-bar.
Interengagement of the support member and that part of the cross-member extending across the width of the support member may be provided, for example by rebating or recessing one or both of the members.
In preferred embodiments of the invention the support member is provided with transverse slots or recesses into which the cross-members extend and are welded.
Penetration of the weld may be facilitated by providing clearance between the sides of the cross-member and slot walls, conveniently but not necessarily by their relative inclination. To further facilitate weld penetration the ends of the cross-members may be chamfered to provide a Vshaped notch, either between adjacent panel cross-member ends, where the slot extends across the entire width of the support-bar, or between the cross-member end and the end of the slot, where the latter extends only partly across the support bar.
The sidewalls of the support member may be stepped to form shoulders parallel to the screening surface so that the endmost wires of the panel, i.e. those carried by the parts of the cross-members extending across the width of the support member are supported above the shoulders. Such shoulders may be provided by flanges comprising the arm portions of a support member of inverted T-shaped cross-section.
The distance between the wire-supporting shoulder surface and the uppermost i.e. upstream face of the support member, i.e. that adjacent the screen surface, at least for assembly, is preferably less than the depth of the wire supported thereupon, in one specific embodiment by about 0.1 mm.
Where a panel is trapezoidal, as may be the case where the screening apparatus comprises a conical centrifuge drum, the wires may extend at an acute angle to the support bar and their end portions be supported by the corresponding shoulder or flange.
Reinforcing ribs may be provided extending across the joint between adjacent panels and secured to their respective cross-members at each side of the joint or/and to the support bar at the joint. In the case of a centrifuge drum such reinforcing ribs may take the form of continuous hoops.
With some embodiments of the invention, it has been found that the incidence of failure of joints between cross-members and longitudinal support members can be further reduced by reinforcing the support members for at least part of their length, in particular for one third to one half of the distance from that end of the drum which is attached to the drive.
It is believed that such reinforcement is especially advantageous for centrifuge drums because it reduces the tendency for the support members to flex circumferentially due to torsional vibratory forces such as are caused by speed/mass variations, for example due to intermittent application of the aggregate to the drum.
The reinforcement may comprise a rib projecting from that face of the support member directed away from the screening surface. The rib may be integral, for example as one limb or flange of a support member of T or cruciform section.
Alternatively, and perhaps preferably, a separate rib may be secured to the support member, conveniently after the cross-members have been secured thereto.
In a preferred embodiment the rib is hollow to provide greater stiffness than a solid rib of the same weight per unit length. Such a hollow rib conveniently takes the form of a generally Ushaped channel secured by its edges to the flanges of the support member.
Where, as previously mentioned, reinforcing hoops are provided, they too can be secured to the longitudinal reinforcement ribs.
Embodiments of the invention will now be described by way of example only and with reference to the accompanying drawings, in which~ Figure 1 shows screening apparatus comprising a conical centrifuge drum;
Figure 2 is a detail view of a portion of the drum from the outside or downstream side of the screening surface;
Figure 3 is a partial cross-sectional view taken on the line AA of Figure 2;
Figure 4 shows a portion of the support member of the drum;
Figure 5 illustrates a joint between two screen panels viewed from the drum interior, one panel having its wires acutely inclined to the support bar;
Figure 6 shows a joint employing an alternative form of support member;
Figure 7 is a view corresponding to Figure 3 but of a further embodiment of the invention; and
Figure 8 shows an alternative form of support member.
Referring to Figure 1, a centrifuge drum in the form of a truncated cone 10 comprises a plurality of screen panels 12 each extending between and secured to flanged end rings 14 and 16 at the narrower and wider ends, respectively. Some of the panels are rectangular and others are trapezoidal.
In a particular application for dewatering coal, the drum is rotated about a horizontal axis, typically at 400 r.p.m. The coal is fed into one, usually the narrower, end of the drum, the whole drum being horizontally vibrated to assist passage of the dewatered coal down the inclined conical inner surface of the basket to exit from the other, wider, end.
Each panel 12 comprises a plurality of parallel wires 18 extending the entire length of the panel.
The wires are secured to cross-members in the form of arcuate ribs 20 which extend circumferentially of the drum. Adjacent ones of panels 12 are secured edge-to-edge by support bars 22 which are of T-shaped cross-section and extend between the end rings 14 and 16, being welded to the latter as at 24, with the limb 26 of the "T" directed towards the interior of the drum.
Referring to Figures 2 to 5, the wires 18 are of wedge cross-section and are secured to the cross-members 20 by a known technique such as resistance welding. Slit apertures 30 defined between the wires 18 allow passage of fluid and/or fine particles from the interior of the drum to the exterior.
The side flanges portions 32 of the support bars 22 have slots 34 at intervals corresponding to the spacing of the cross-members 20. The end
portions 36 of the cross-members project into the
slots 34 so that the endmost wires 38 of each
panel lie upon the inner shoulder surface 40 of
the corresponding flange portion 32 of the
support bar 22. Where the wires lie at an acute
angle to the support bar, as in the case when the panel is trapezoidal, the ends of the wires extend onto the flange 22 as indicated in Figure 5.
The cross-member end portions 36 are welded to the side and end walls of the slots 34. The welding is indicated at 42 in Figure 3 but is omitted from Figure 2 in order to show the parts after assembly but prior to welding. The ends of the cross-members are chamfered at about 600 to form a V-shaped notch between each crossmember and the adjacent end wall of the slot 34.
This facilitates penetration of the weld. Also as can be seen from Figure 3, the slots 34 are wider than the end portions of the cross-members, thus leaving gaps 35 to facilitate weld penetration between the sides of the slots 34 and the end portions of the cross-members.
In a preferred method of assembling such a centrifuge drum, the panels 12 are formed by resistance-welding the plurality of wires onto the cross-members 20 and then assembled with the end rings 14, 1 6 and support bars 22 onto a conical support structure (not shown). Pressure is applied to the support bars and the crossmembers 20 to hold the assembly together and then the various welds are made.
It has been found particularly advantageous to make the length r of the limb of the T-shaped support bar, (see Figure 4) slightly less than the depth d of the wires (see Figure 3) say by about 0.1 mm. This ensures that when pressure is applied to the support bar the end-most wires, or wire ends in the case of a trapezoidal panel, are clamped between the inner surface 40 of the flange 32 and the conical support structure. Then when the cross-member 20 has been welded into the associated slot 34 the endmost wires or wire ends will generally remain clamped against the flange.
Usually the centrifuge drum will have one or more reinforcing hoops or ribs 50 at intervals along its length. Each hoop may coincide with a cross-member 20 and be welded to the outer end of the cross-member, as indicated at 52 in Figure 3, and to the support bar 22. It is envisaged that the hoop will provide such additional support each side of the joint between adjacent panels that it might be sufficient to weld the crossmembers to only a part of the associated slot e.g.
the end.
The invention encompasses the use of support members of alternative cross-sectional shape slotted as described or with slots extending across the whole width of the bar and also the use of cross-members of alternative cross-sectional shape, e.g. circular.
Figure 6 illustrates an alternative arrangement in which the support bar 60 is or rectangular section and has slots 62 across its width. The cross-members 20 of the panels 12 each project beyond the endmost wires 38 of the panel and halfway across the slot 62. The ends of the crossmembers 20 are welded together and to the slot 62, as indicated at 70, conveniently in a similar manner to that previously described. In this embodiment the endmost wires 38 abut the sides of the support bar 60, and the dimensions of the slot, support bar and wires are such that the bar and wires provide a substantially continuous inner drum surface.
Figure 7 and 8 illustrate embodiments in which the support members have longitudinal reinforcing ribs 80', 80". These additional ribs serve to increase the resistance of the support members to lateral flexing under the action of torsional forces due to sudden load variations and which tend to flex or twist the drum about its rotational axis. The additional ribs extend from the driven end flange 14 for a distance between one third and one half of the length of the support member.
In Figure 7 the additional rib 80' comprises a generally U-shaped member welded at its edges 81 to the downstream face of a T-shaped support member 26.
In Figure 8 the additional rib comprises a flange 80" of a support member 26 of cruciform section. In other respects the support member 26 corresponds to that shown in Figure 4.
Where transverse reinforcing ribs or circumferential hoops 50 are provided they may be notched to fit around the longitudinal rib 80 or cut-short and butt-jointed to it, as indicated by broken lines in Figure 7. Welding the transverse and longitudinal ribs together at their intersections further increases the rigidity of the structure in the vicinity of the joints between cross-members 20 and support members 22.
It will be appreciated that in the above embodiments the depth of the support members may be increased to give greater rigidity. The depth of the cross-members 20 may then be less than the depth of slot in which case the remainder of the slot may be filled during welding to preserve the strength of the support bar.
It is also envisaged that, especially for flat screens, the wires might be of comparable depth to the support bar, in which case the latter need not be slotted as the cross-member could be welded to its rear face. If required, say where the wires were of slightly less depth than the support
member, the end portions of the cross-members
might be stepped to extend transversely of the rear face of the support member.
Embodiments of the invention, having attachment of the cross-members distributed across the width of the support members, give an increased resistance to fatigue failure of the joint due to flexing of the cross-members, between consecutive support bars, due to intermittent loading of the panel as the drum rotates.
Although especially applicable to centrifuge drums, it will be appreciated that the invention could be applied with advantage to other types of screening apparatus such as flat bed or curved
run-down screens where joint failure is likely due to vibration.
Claims (22)
1. Screening apparatus having a screen surface formed by a plurality of screen panels each
comprising a plurality of wires secured in spaced
relation one to another by cross-members to
define slit apertures for the passage of fluid or fine
particles, crossmembers of adjacent panels
extending in a direction transversely of, and being
secured to, an elongate support member, wherein
the cross-members extend across, and are
secured to, at least part of the width of the
support member.
2. Screening apparatus as claimed in claim 1,
wherein that part of each cross-member
extending across the width of the support
member is accommodated at least partially by a
slot in the support member.
3. Screening apparatus as claimed in claim 2,
wherein juxtaposed sidewalls of the said part and
the slot, respectively, are spaced apart.
4. Screening apparatus as claimed in claim 3,
wherein said sidewalls of slot and cross-member
part, respectively, are relatively inclined to provide
a a notch which diverges away from the bottom of
the slot.
5. Screening apparatus as claimed in claim 2,3 or 4, wherein the slot extends across the entire
width of the support member and cross-members
of the adjacent panels extend into the slot from
opposite ends thereof.
6. Screening apparatus as claimed in claim 5,
wherein opposed end faces of the cross-members
are relatively inclined forming a notch diverging in
a a direction away from the screening surface.
7. Screening apparatus as claimed in claim 2,3 or 4, wherein end portions of cross-members of
adjacent panels at least partially are
accommodated in slots extending for part only of the width of the support member.
8. Screening apparatus as claimed in claim 7,
wherein the opposed end faces of the slot and
cross-member accommodated thereby are
relatively inclined to form a notch diverging in the
direction away from the screening surface.
9. Screening apparatus as claimed in any
preceding claim, wherein the cross-members are
welded to the support member.
10. Screening apparatus as claimed in claim 9,
as appendant to any of claims 3 to 8, wherein
weld material substantially fills the spaces
between the cross-members and slot sidewalls.
11. Screening apparatus as claimed in any
preceding claim, wherein sidewalls of the support
member are stepped to provide shoulder surfaces
extending generally parallel to the screening
surface, and the wires carried by those parts of
the cross-members extending across the width of
the support member are supported upon the
shoulders.
12. Screening apparatus as claimed in claim
11, wherein the distance between the shoulders
and the upstream face of the support member is
less than the depth of the wires supported
thereupon.
13. Screening apparatus as claimed in claim
11 or 12, wherein the wires of a panel extend at
an acute angle to the support member and their end portions are supported upon, or/and secured to, the shoulder surface.
14. Screening apparatus as claimed in any preceding claim, including transverse rib members extending across the support member and secured to the cross-members of the adjacent panels.
15. Screening apparatus as claimed in claim 14, wherein the rib members are secured to the support member.
16. Screening apparatus as claimed in any preceding claim, wherein at least some of the support members have longitudinal rib members projecting from the downstream face thereof for at least part of their lengths.
17. Screening apparatus as claimed in claim 16, wherein each longitudinal rib member comprises a generally U-shaped channel member secured by its edges to the support member.
18. Screening apparatus as claimed in claim 16, wherein the longitudinal rib member comprises a flange of a support member of cruciform cross-section.
19. Screening apparatus as claimed in claim 16, 17 or 18, comprising a centrifuge drum adapted at one end to be rotatably driven, wherein the longitudinal rib members extending from the driven end for a distance between one third and one half of the length of the drum.
20. Screening apparatus as claimed in any one of claims 16, 17 or 18, as appendant to claim 14, wherein the transverse rib members intersect and are secured to the longitudinal rib members.
21. Screening apparatus as claimed in any one of claims 1 to 17, wherein the support member is of T-shaped cross-section.
22. Screening apparatus substantially as herein described with reference to and as shown in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7936400A GB2033242A (en) | 1978-10-20 | 1979-10-19 | Screening Apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7841469 | 1978-10-20 | ||
| GB7936400A GB2033242A (en) | 1978-10-20 | 1979-10-19 | Screening Apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2033242A true GB2033242A (en) | 1980-05-21 |
Family
ID=26269280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7936400A Withdrawn GB2033242A (en) | 1978-10-20 | 1979-10-19 | Screening Apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2033242A (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4487695A (en) * | 1983-12-27 | 1984-12-11 | Connolly James D | Centrifuge screen basket |
| US4555055A (en) * | 1982-08-06 | 1985-11-26 | Connolly James D | Method of making centrifuge screen baskets |
| US4569761A (en) * | 1982-09-27 | 1986-02-11 | Sulzer-Escher Wyss Ag | Centrifuge sieve and method of producing the same |
| GB2204506A (en) * | 1987-05-12 | 1988-11-16 | Surescreen Mfg | Separating screens |
| US4885090A (en) * | 1987-04-16 | 1989-12-05 | The Black Clawson Company | Screen plates |
| AU603666B2 (en) * | 1987-05-12 | 1990-11-22 | Johnson Filtration Systems (Australia) Pty. Ltd. | Improvements to separating apparatus |
| GB2239824A (en) * | 1990-01-13 | 1991-07-17 | F W Screens Limited | Screening machine for rock |
| US5054386A (en) * | 1989-03-07 | 1991-10-08 | Moulinex (Societe Anonyme) | Centrifuge basket |
| US5064536A (en) * | 1989-07-03 | 1991-11-12 | Bratten Jack R | Wedgewire filter and method of manufacture |
| US5705069A (en) * | 1995-08-02 | 1998-01-06 | Harusuke Naito | Centrifugal water treatment device |
| GB2318991A (en) * | 1996-10-16 | 1998-05-13 | Morimura Kousan Kabushiki Kais | Filter screen made of filaments |
| US6663774B2 (en) * | 2000-10-16 | 2003-12-16 | Weatherford/Lamb, Inc. | Centrifuge screen |
| WO2006058567A1 (en) * | 2004-11-30 | 2006-06-08 | Siebtechnik Gmbh | Centrifuge basket for a screen centrifuge |
| DE102006051236A1 (en) * | 2006-10-31 | 2008-05-08 | Siebtechnik Gmbh | Carrying basket of a sieving centrifuge |
| US8297445B2 (en) | 2007-11-14 | 2012-10-30 | Filtration Fibrewall Inc. | Screen basket |
| US8469198B2 (en) | 2005-05-09 | 2013-06-25 | Kadant Canada Corp. | Screen basket with replaceable profiled bars |
| FR2992237A1 (en) * | 2012-06-22 | 2013-12-27 | Euroslot Kdss France | FILTRATION SIEVE FOR CENTRIFUGATION BASKET |
| CN103842091A (en) * | 2011-09-27 | 2014-06-04 | 伟尔矿物澳大利亚私人有限公司 | Centrifugal screen apparatus |
| CN106925508A (en) * | 2017-04-11 | 2017-07-07 | 中国科学院近代物理研究所 | A kind of high-temperature vacuum granule screening machine |
| CN111632811A (en) * | 2020-06-04 | 2020-09-08 | 中国建筑第二工程局有限公司 | Sand screening device for constructional engineering and manufacturing method thereof |
| WO2020194169A1 (en) | 2019-03-22 | 2020-10-01 | Flsmidth A/S | Centrifugal separator and screen having blades for same |
| WO2021072365A1 (en) * | 2019-10-10 | 2021-04-15 | Aqseptence Group, Inc. | Adjustable screen joint and related methods for assembling a batch centrifuge screen filter |
| CN114406552A (en) * | 2022-03-04 | 2022-04-29 | 中国石油大学(华东) | A kind of anti-fatigue welding manufacturing method for drum filter press drum |
| CN115315302A (en) * | 2020-04-17 | 2022-11-08 | 三菱重工环境·化学工程株式会社 | Sieve device, concentration system, dehydration system, and water treatment system |
| WO2025133536A1 (en) * | 2023-12-21 | 2025-06-26 | Faivre Group | Drum for a drum filter |
-
1979
- 1979-10-19 GB GB7936400A patent/GB2033242A/en not_active Withdrawn
Cited By (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555055A (en) * | 1982-08-06 | 1985-11-26 | Connolly James D | Method of making centrifuge screen baskets |
| US4569761A (en) * | 1982-09-27 | 1986-02-11 | Sulzer-Escher Wyss Ag | Centrifuge sieve and method of producing the same |
| US4487695A (en) * | 1983-12-27 | 1984-12-11 | Connolly James D | Centrifuge screen basket |
| US4885090A (en) * | 1987-04-16 | 1989-12-05 | The Black Clawson Company | Screen plates |
| GB2204506A (en) * | 1987-05-12 | 1988-11-16 | Surescreen Mfg | Separating screens |
| DE3816214A1 (en) * | 1987-05-12 | 1989-03-16 | Surescreen Mfg | TURNTABLE |
| AU603666B2 (en) * | 1987-05-12 | 1990-11-22 | Johnson Filtration Systems (Australia) Pty. Ltd. | Improvements to separating apparatus |
| GB2204506B (en) * | 1987-05-12 | 1991-12-11 | Surescreen Mfg | Improvements relating to separating screens |
| US5054386A (en) * | 1989-03-07 | 1991-10-08 | Moulinex (Societe Anonyme) | Centrifuge basket |
| AU635245B2 (en) * | 1989-03-07 | 1993-03-18 | Moulinex | Centrifuge basket |
| US5064536A (en) * | 1989-07-03 | 1991-11-12 | Bratten Jack R | Wedgewire filter and method of manufacture |
| GB2239824A (en) * | 1990-01-13 | 1991-07-17 | F W Screens Limited | Screening machine for rock |
| US5705069A (en) * | 1995-08-02 | 1998-01-06 | Harusuke Naito | Centrifugal water treatment device |
| GB2318991A (en) * | 1996-10-16 | 1998-05-13 | Morimura Kousan Kabushiki Kais | Filter screen made of filaments |
| GB2318991B (en) * | 1996-10-16 | 2001-03-21 | Morimura Kousan Kabushiki Kais | Solid-liquid separating filter medium for sewage,waste water,etc |
| US6663774B2 (en) * | 2000-10-16 | 2003-12-16 | Weatherford/Lamb, Inc. | Centrifuge screen |
| WO2006058567A1 (en) * | 2004-11-30 | 2006-06-08 | Siebtechnik Gmbh | Centrifuge basket for a screen centrifuge |
| US8469198B2 (en) | 2005-05-09 | 2013-06-25 | Kadant Canada Corp. | Screen basket with replaceable profiled bars |
| US8231782B2 (en) | 2006-10-31 | 2012-07-31 | Seibtechnik GmbH | Support basket of a screen centrifuge |
| DE102006051236A1 (en) * | 2006-10-31 | 2008-05-08 | Siebtechnik Gmbh | Carrying basket of a sieving centrifuge |
| US8297445B2 (en) | 2007-11-14 | 2012-10-30 | Filtration Fibrewall Inc. | Screen basket |
| US9861915B2 (en) | 2011-09-27 | 2018-01-09 | Weir Minerals Australia Limited | Centrifugal screen apparatus |
| CN103842091A (en) * | 2011-09-27 | 2014-06-04 | 伟尔矿物澳大利亚私人有限公司 | Centrifugal screen apparatus |
| EP2760588A4 (en) * | 2011-09-27 | 2015-05-27 | Weir Minerals Australia Ltd | centrifuge screen |
| AU2016202933B2 (en) * | 2011-09-27 | 2017-02-02 | Weir Minerals Australia Ltd | Centrifugal screen apparatus |
| FR2992237A1 (en) * | 2012-06-22 | 2013-12-27 | Euroslot Kdss France | FILTRATION SIEVE FOR CENTRIFUGATION BASKET |
| WO2013190374A1 (en) * | 2012-06-22 | 2013-12-27 | Euroslot Kdss France | Filtering screen for centrifuge basket |
| CN106925508A (en) * | 2017-04-11 | 2017-07-07 | 中国科学院近代物理研究所 | A kind of high-temperature vacuum granule screening machine |
| WO2020194169A1 (en) | 2019-03-22 | 2020-10-01 | Flsmidth A/S | Centrifugal separator and screen having blades for same |
| WO2021072365A1 (en) * | 2019-10-10 | 2021-04-15 | Aqseptence Group, Inc. | Adjustable screen joint and related methods for assembling a batch centrifuge screen filter |
| CN115315302A (en) * | 2020-04-17 | 2022-11-08 | 三菱重工环境·化学工程株式会社 | Sieve device, concentration system, dehydration system, and water treatment system |
| CN115315302B (en) * | 2020-04-17 | 2024-05-31 | 三菱重工环境·化学工程株式会社 | Screen device, concentration system, dewatering system and water treatment system |
| CN111632811A (en) * | 2020-06-04 | 2020-09-08 | 中国建筑第二工程局有限公司 | Sand screening device for constructional engineering and manufacturing method thereof |
| CN111632811B (en) * | 2020-06-04 | 2023-06-20 | 中国建筑第二工程局有限公司 | Sand screening device for constructional engineering and manufacturing method thereof |
| CN114406552A (en) * | 2022-03-04 | 2022-04-29 | 中国石油大学(华东) | A kind of anti-fatigue welding manufacturing method for drum filter press drum |
| CN114406552B (en) * | 2022-03-04 | 2023-10-10 | 中国石油大学(华东) | An anti-fatigue welding manufacturing method for the drum of a drum filter press |
| WO2025133536A1 (en) * | 2023-12-21 | 2025-06-26 | Faivre Group | Drum for a drum filter |
| FR3157216A1 (en) * | 2023-12-21 | 2025-06-27 | Faivre Group | Drum for a drum filter |
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