WO1999012633A1 - Filter belt guide - Google Patents
Filter belt guide Download PDFInfo
- Publication number
- WO1999012633A1 WO1999012633A1 PCT/GB1998/002618 GB9802618W WO9912633A1 WO 1999012633 A1 WO1999012633 A1 WO 1999012633A1 GB 9802618 W GB9802618 W GB 9802618W WO 9912633 A1 WO9912633 A1 WO 9912633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide
- belt
- guide means
- edge
- means according
- Prior art date
Links
Classifications
-
- 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
- B01D33/044—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are pervious for filtering
- B01D33/048—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are pervious for filtering with endless filtering bands
-
- 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
- B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
Definitions
- This invention relates to guides for filter belts, for the purpose of guiding and centring filter belts of the kind with edge tracks provided by a bead provided on the edge of the belt.
- Belts of this kind are for example used on rotary vacuum drum filters.
- the usual guide arrangement for the belt comprises a pair of wheels at each edge which contact the rubber bead or edge-track at an angle.
- US Patent 3615023 discloses a centring or guiding device for a filter belt which exerts transverse tension in the belt, by means of pairs of glide sleeve members, engaging respective edge track beads on the edges of the belt, under tension urging the glide sleeves outwardly with respect to the belt.
- the glide shoes are in the form of cylindrical members extending parallel to the longitudinal direction of the belt and may be coated with a fluoropolymer to reduce friction. The cylindrical members do nothing to alleviate the problem of catching the belt/seam, since they are simply cut straight at their ends.
- An o.ject of this invention is to provide a filter belt guide apparatus which enables guidance and centring of the belt to be carried out, but which is free of the risk of catching in the belt seam thereby avoiding the damage which can be caused thereby.
- This invention accordingly provides, in an endless belt filtration machine, guide means for the filtration belt, mounted on the machine, and at each side of the intended path of the filtration belt, said guide means each comprising a pair of members, located each to bear respectively on upper and lower faces of an edge track bead on the respective edge of the belt, the members of each pair being formed at each end with means providing a guide surface merging with faces thereof which bear on the edge track faces.
- Each member may be in the nature of a skid or ski member, with a curved surface forming a surface which bears on one of the said edge track bead faces, and having a portion at each end which is bent out of the axis of the curved surface of the skid or ski member, away from the respective edge track bead face, thereby providing said merging guide surface.
- Each member may be carried on an L-shaped rod, the other end of which is mounted on a bracket.
- the bracket may have two leaves set at a right angle and mounted on the machine frame, each leaf carrying one of the L-shaped rods, with the leaves of the bracket straddling or embracing the respective edge of the belt.
- FIG. 1 is a general perspective view of a belt filtration machine provided with belt guides according to the invention.
- Fig 2 is a sectional view of one edge region of the belt, showing the guides and their mounting means;
- Fig 3 is a perspective view of the guides at one belt edge.
- a belt filtration machine comprises a drum 10, the lower part of which is immersed in a slurry vat 11, containing material to be filtered.
- a filter belt 12 extends about the drum, and at one side is guided off the drum 10 to pass about a filtrate discharge roll 13, a roller guide roll 14, and a tensioning roll 15.
- Guide assembles 16 are disposed one at each side of the belt 12, in the upper reach between the drum 10 and filtrate discharge roll 13, to centre and guide the belt.
- Each guide assembly 16 comprises a pair of guide members 17,18.
- One such guide member is disposed above, and one below the edge of the belt 10, bearing on a respective upper inside surface 19 and lower guide surface 20, of an edge track bead 21 connected to or formed on the drum 10.
- Each guide member comprises an elongate rod of circular cross-section, providing a respective curved bearing surface 17a or 18a having an axis of curvature coinciding with the axis of the rod.
- Each rod 17,18 is formed at each end with a portion 17a, 17b, 18a, 18b which is bent away from the edge track bead
- each guide member takes the form of a skid or ski member with up turned ends.
- the guide surfaces 22 ensure that there is no edge or stop presented to a raised feature on the belt such as a clipper seam joining the ends of the belt. Thus the guides will not catch any such raised part, avoiding snagging or damage from jamming of the belt.
- Guide member 17 is mounted on an L-shaped rod 23, whilst guide member 18 is symmetrically mounted on an L- shaped rod 24.
- the rods 23, 24 are directed towards the edge of belt 10, and are carried by means of screw and nut fastenings on respective leaves 25, 26 of a bracket, which is in turn mounted by a rod 27 to the frame of the filter machine.
- the guide members 17, 18 may be varied from the embodiment described above, for example by being in the form of curved shoes with turned up or curved ends, or part-tubular members again with turned up ends.
- the merging guide surface may, at the very least, be provided by contouring or chamfering the ends of otherwise plain rods or shoes forming the guide members.
- the guide members may of course be mounted in any manner desired, and may include springs or hydraulic means for varying the tension on the filter belt, or tensioning may be by means of screw and nut fastenings of the rods 23, 24 in the leaves of the bracket.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The edge of a filter belt (10) comprises an edge bead (21), with which guide members (17, 18) cooperate. The guide members are in the form of rods having upturned ends (17a, 17b, 18a, 18b) defining curved merging surfaces (22) between the ends and the main parts of the guide members, providing overall ski or skid shaped members. The guide members (17, 18) are connected by L-shaped rods (23, 24) to respective leaves or plates (25, 26) forming a bracket embracing the edge of the belt (10), and mounted on the machine by a member (27).
Description
FILTER BELT GUIDE
This invention relates to guides for filter belts, for the purpose of guiding and centring filter belts of the kind with edge tracks provided by a bead provided on the edge of the belt.
Belts of this kind are for example used on rotary vacuum drum filters. The usual guide arrangement for the belt comprises a pair of wheels at each edge which contact the rubber bead or edge-track at an angle. Sometimes problems arise as the wheels catch in the clipper se-αm used to join the ends of the filter belt to make it endless. Such catching affects the running of the machine, and damages the seam.
US Patent 3615023 discloses a centring or guiding device for a filter belt which exerts transverse tension in the belt, by means of pairs of glide sleeve members, engaging respective edge track beads on the edges of the belt, under tension urging the glide sleeves outwardly with respect to the belt. The glide shoes are in the form of cylindrical members extending parallel to the longitudinal direction of the belt and may be coated with a fluoropolymer to reduce friction. The cylindrical members do nothing to alleviate the problem of catching the belt/seam, since they are simply cut straight at their ends.
An o.ject of this invention is to provide a filter belt guide apparatus which enables guidance and centring of the belt to be carried out, but which is free of the
risk of catching in the belt seam thereby avoiding the damage which can be caused thereby.
This invention accordingly provides, in an endless belt filtration machine, guide means for the filtration belt, mounted on the machine, and at each side of the intended path of the filtration belt, said guide means each comprising a pair of members, located each to bear respectively on upper and lower faces of an edge track bead on the respective edge of the belt, the members of each pair being formed at each end with means providing a guide surface merging with faces thereof which bear on the edge track faces.
Each member may be in the nature of a skid or ski member, with a curved surface forming a surface which bears on one of the said edge track bead faces, and having a portion at each end which is bent out of the axis of the curved surface of the skid or ski member, away from the respective edge track bead face, thereby providing said merging guide surface.
Each member may be carried on an L-shaped rod, the other end of which is mounted on a bracket. The bracket may have two leaves set at a right angle and mounted on the machine frame, each leaf carrying one of the L-shaped rods, with the leaves of the bracket straddling or embracing the respective edge of the belt.
A preferred embodiment of filter belt guide according to the invention will now be described, with reference to the accompanying drawings, wherein: -
FEUILLE RECTIFIEE (REGLE 91)
Fig 1 is a general perspective view of a belt filtration machine provided with belt guides according to the invention;
Fig 2 is a sectional view of one edge region of the belt, showing the guides and their mounting means; and
Fig 3 is a perspective view of the guides at one belt edge.
A belt filtration machine comprises a drum 10, the lower part of which is immersed in a slurry vat 11, containing material to be filtered. A filter belt 12 extends about the drum, and at one side is guided off the drum 10 to pass about a filtrate discharge roll 13, a roller guide roll 14, and a tensioning roll 15.
Guide assembles 16 are disposed one at each side of the belt 12, in the upper reach between the drum 10 and filtrate discharge roll 13, to centre and guide the belt.
One of the guide assemblies 16 is shown in more detail in Figs 2 and 3. Each guide assembly comprises a pair of guide members 17,18. One such guide member is disposed above, and one below the edge of the belt 10, bearing on a respective upper inside surface 19 and lower guide surface 20, of an edge track bead 21 connected to or formed on the drum 10. Each guide member comprises an elongate rod of circular cross-section, providing a respective curved bearing surface 17a or 18a having an axis of curvature coinciding with the axis of the rod. Each rod 17,18 is formed at each end with a portion 17a, 17b, 18a, 18b which is bent away from the edge track bead
FEUILLE jRECTIFEEE (REGLE 91)
21, to provide at each bend a merging guide surface 22 so that each guide member takes the form of a skid or ski member with up turned ends. The guide surfaces 22 ensure that there is no edge or stop presented to a raised feature on the belt such as a clipper seam joining the ends of the belt. Thus the guides will not catch any such raised part, avoiding snagging or damage from jamming of the belt.
Guide member 17 is mounted on an L-shaped rod 23, whilst guide member 18 is symmetrically mounted on an L- shaped rod 24. The rods 23, 24 are directed towards the edge of belt 10, and are carried by means of screw and nut fastenings on respective leaves 25, 26 of a bracket, which is in turn mounted by a rod 27 to the frame of the filter machine.
The guide members 17, 18 may be varied from the embodiment described above, for example by being in the form of curved shoes with turned up or curved ends, or part-tubular members again with turned up ends. The merging guide surface may, at the very least, be provided by contouring or chamfering the ends of otherwise plain rods or shoes forming the guide members.
The guide members may of course be mounted in any manner desired, and may include springs or hydraulic means for varying the tension on the filter belt, or tensioning may be by means of screw and nut fastenings of the rods 23, 24 in the leaves of the bracket.
FEUILLE RECTIFIEE (REGLE 91)
Claims
1. In an endless belt filtration machine, guide means for the filtration belt, mounted on the machine and at each side of the intended edge location of the filtration belt, characterised in that said guide means each comprise a pair of members located to bear respectively on upper end and lower faces of an edge track bead on the respective edge of the belt, the members of each pair being formed at each end with means providing a guide surface merging with faces thereof which bear on the edge track faces.
2. Guide means according to claim 1, wherein each member of each pair has a curved surface which is continuous with a surface which bears on one of the edge track bead faces, and has a portion at each end which is bent out of the axis of the curved surface of the member, away from the respective edge track bead face, thereby providing said merging guide surface.
3. Guide means according to claim 1 or claim 2, wherein each member is carried on an L-shaped rod, the other end of which is mounted on a bracket comprising two leaves set at a right angle and mounted on the machine frame, each leaf carrying one of the L-shaped rods with the leaves of the bracket straddling or embracing the respective edge of the belt.
4. Guide means according to claim 2, wherein each guide member comprises an elongate rod of circular cross- section providing a respective curved bearing surface having an axis of curvature coinciding with the axis of the rod, and being formed at each end with a portion which is bent away from the edge track bead to provide at each end a merging guide surface, to ensure that no edge or step is presented to the belt.
5. Guide means according to claim 2 in the form of curved shoes with turned-up or curved ends.
6. Guide means according to claim 2 , comprising part tubular members with turned-up ends.
7. Guide means according to claim 2, wherein the merging guide surface is provided by contouring or chamfering the ends of otherwise plain rods or shoes forming the guide members .
8. Guide means according to any preceding claim, wherein the guide members are mounted on a rod.
9. Guide means according to any of claims 1 to 8, wherein the guide means are mounted on a mounting including springs or hydraulic means for varying the tension on the filter belt.
10. Guide means according to any of claims 1 to 8, wherein the guide means are mounted on means including a screw and nut fastening for varying the tension on the filter belt.
FEUILLE RECTIFIEE (REGLE 91)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU37492/97A AU3749297A (en) | 1997-09-11 | 1997-09-11 | Filter belt guide |
| AU37492/97 | 1997-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999012633A1 true WO1999012633A1 (en) | 1999-03-18 |
Family
ID=3724559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1998/002618 WO1999012633A1 (en) | 1997-09-11 | 1998-09-01 | Filter belt guide |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3749297A (en) |
| WO (1) | WO1999012633A1 (en) |
| ZA (1) | ZA987808B (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107106946A (en) * | 2014-11-14 | 2017-08-29 | Z-菲尔特私人有限公司 | Slender member |
| US20190193391A1 (en) * | 2012-03-15 | 2019-06-27 | Landa Corporation Ltd. | Endless flexible belt for a printing system |
| US10518526B2 (en) | 2012-03-05 | 2019-12-31 | Landa Corporation Ltd. | Apparatus and method for control or monitoring a printing system |
| US10569532B2 (en) | 2012-03-05 | 2020-02-25 | Landa Corporation Ltd. | Digital printing system |
| US10569534B2 (en) | 2012-03-05 | 2020-02-25 | Landa Corporation Ltd. | Digital printing system |
| US10596804B2 (en) | 2015-03-20 | 2020-03-24 | Landa Corporation Ltd. | Indirect printing system |
| US10632740B2 (en) | 2010-04-23 | 2020-04-28 | Landa Corporation Ltd. | Digital printing process |
| US10642198B2 (en) | 2012-03-05 | 2020-05-05 | Landa Corporation Ltd. | Intermediate transfer members for use with indirect printing systems and protonatable intermediate transfer members for use with indirect printing systems |
| US10703094B2 (en) | 2015-04-14 | 2020-07-07 | Landa Corporation Ltd. | Apparatus for threading an intermediate transfer member of a printing system |
| US10730333B2 (en) | 2012-03-05 | 2020-08-04 | Landa Corporation Ltd. | Printing system |
| US10759953B2 (en) | 2013-09-11 | 2020-09-01 | Landa Corporation Ltd. | Ink formulations and film constructions thereof |
| US10800936B2 (en) | 2012-03-05 | 2020-10-13 | Landa Corporation Ltd. | Ink film constructions |
| US10889128B2 (en) | 2016-05-30 | 2021-01-12 | Landa Corporation Ltd. | Intermediate transfer member |
| US10926532B2 (en) | 2017-10-19 | 2021-02-23 | Landa Corporation Ltd. | Endless flexible belt for a printing system |
| US10933661B2 (en) | 2016-05-30 | 2021-03-02 | Landa Corporation Ltd. | Digital printing process |
| US10960660B2 (en) | 2012-03-05 | 2021-03-30 | Landa Corporation Ltd. | Digital printing process |
| US10994528B1 (en) | 2018-08-02 | 2021-05-04 | Landa Corporation Ltd. | Digital printing system with flexible intermediate transfer member |
| US11267239B2 (en) | 2017-11-19 | 2022-03-08 | Landa Corporation Ltd. | Digital printing system |
| US11321028B2 (en) | 2019-12-11 | 2022-05-03 | Landa Corporation Ltd. | Correcting registration errors in digital printing |
| US11318734B2 (en) | 2018-10-08 | 2022-05-03 | Landa Corporation Ltd. | Friction reduction means for printing systems and method |
| US11465426B2 (en) | 2018-06-26 | 2022-10-11 | Landa Corporation Ltd. | Intermediate transfer member for a digital printing system |
| US11511536B2 (en) | 2017-11-27 | 2022-11-29 | Landa Corporation Ltd. | Calibration of runout error in a digital printing system |
| US11679615B2 (en) | 2017-12-07 | 2023-06-20 | Landa Corporation Ltd. | Digital printing process and method |
| US11707943B2 (en) | 2017-12-06 | 2023-07-25 | Landa Corporation Ltd. | Method and apparatus for digital printing |
| US11787170B2 (en) | 2018-12-24 | 2023-10-17 | Landa Corporation Ltd. | Digital printing system |
| US11833813B2 (en) | 2019-11-25 | 2023-12-05 | Landa Corporation Ltd. | Drying ink in digital printing using infrared radiation |
| US12001902B2 (en) | 2018-08-13 | 2024-06-04 | Landa Corporation Ltd. | Correcting distortions in digital printing by implanting dummy pixels in a digital image |
| US12011920B2 (en) | 2019-12-29 | 2024-06-18 | Landa Corporation Ltd. | Printing method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957082A (en) * | 2020-09-15 | 2020-11-20 | 江苏天将生物科技有限公司 | Vertical filter press |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3429447A (en) * | 1963-10-11 | 1969-02-25 | Steven S Davis | Aligning means for endless web filter |
| US3642142A (en) * | 1970-03-26 | 1972-02-15 | Dorr Oliver Inc | Centering devices for endless filter belt |
-
1997
- 1997-09-11 AU AU37492/97A patent/AU3749297A/en not_active Abandoned
-
1998
- 1998-08-27 ZA ZA987808A patent/ZA987808B/en unknown
- 1998-09-01 WO PCT/GB1998/002618 patent/WO1999012633A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3429447A (en) * | 1963-10-11 | 1969-02-25 | Steven S Davis | Aligning means for endless web filter |
| US3642142A (en) * | 1970-03-26 | 1972-02-15 | Dorr Oliver Inc | Centering devices for endless filter belt |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10632740B2 (en) | 2010-04-23 | 2020-04-28 | Landa Corporation Ltd. | Digital printing process |
| US10642198B2 (en) | 2012-03-05 | 2020-05-05 | Landa Corporation Ltd. | Intermediate transfer members for use with indirect printing systems and protonatable intermediate transfer members for use with indirect printing systems |
| US10730333B2 (en) | 2012-03-05 | 2020-08-04 | Landa Corporation Ltd. | Printing system |
| US10569532B2 (en) | 2012-03-05 | 2020-02-25 | Landa Corporation Ltd. | Digital printing system |
| US10569534B2 (en) | 2012-03-05 | 2020-02-25 | Landa Corporation Ltd. | Digital printing system |
| US10800936B2 (en) | 2012-03-05 | 2020-10-13 | Landa Corporation Ltd. | Ink film constructions |
| US10518526B2 (en) | 2012-03-05 | 2019-12-31 | Landa Corporation Ltd. | Apparatus and method for control or monitoring a printing system |
| US10960660B2 (en) | 2012-03-05 | 2021-03-30 | Landa Corporation Ltd. | Digital printing process |
| US10569533B2 (en) * | 2012-03-15 | 2020-02-25 | Landa Corporation Ltd. | Endless flexible belt for a printing system |
| US20190193391A1 (en) * | 2012-03-15 | 2019-06-27 | Landa Corporation Ltd. | Endless flexible belt for a printing system |
| US10759953B2 (en) | 2013-09-11 | 2020-09-01 | Landa Corporation Ltd. | Ink formulations and film constructions thereof |
| CN107106946A (en) * | 2014-11-14 | 2017-08-29 | Z-菲尔特私人有限公司 | Slender member |
| US10596804B2 (en) | 2015-03-20 | 2020-03-24 | Landa Corporation Ltd. | Indirect printing system |
| US10703094B2 (en) | 2015-04-14 | 2020-07-07 | Landa Corporation Ltd. | Apparatus for threading an intermediate transfer member of a printing system |
| US10889128B2 (en) | 2016-05-30 | 2021-01-12 | Landa Corporation Ltd. | Intermediate transfer member |
| US10933661B2 (en) | 2016-05-30 | 2021-03-02 | Landa Corporation Ltd. | Digital printing process |
| US10926532B2 (en) | 2017-10-19 | 2021-02-23 | Landa Corporation Ltd. | Endless flexible belt for a printing system |
| US11267239B2 (en) | 2017-11-19 | 2022-03-08 | Landa Corporation Ltd. | Digital printing system |
| US11511536B2 (en) | 2017-11-27 | 2022-11-29 | Landa Corporation Ltd. | Calibration of runout error in a digital printing system |
| US11707943B2 (en) | 2017-12-06 | 2023-07-25 | Landa Corporation Ltd. | Method and apparatus for digital printing |
| US11679615B2 (en) | 2017-12-07 | 2023-06-20 | Landa Corporation Ltd. | Digital printing process and method |
| US11465426B2 (en) | 2018-06-26 | 2022-10-11 | Landa Corporation Ltd. | Intermediate transfer member for a digital printing system |
| US10994528B1 (en) | 2018-08-02 | 2021-05-04 | Landa Corporation Ltd. | Digital printing system with flexible intermediate transfer member |
| US12001902B2 (en) | 2018-08-13 | 2024-06-04 | Landa Corporation Ltd. | Correcting distortions in digital printing by implanting dummy pixels in a digital image |
| US11318734B2 (en) | 2018-10-08 | 2022-05-03 | Landa Corporation Ltd. | Friction reduction means for printing systems and method |
| US11787170B2 (en) | 2018-12-24 | 2023-10-17 | Landa Corporation Ltd. | Digital printing system |
| US11833813B2 (en) | 2019-11-25 | 2023-12-05 | Landa Corporation Ltd. | Drying ink in digital printing using infrared radiation |
| US11321028B2 (en) | 2019-12-11 | 2022-05-03 | Landa Corporation Ltd. | Correcting registration errors in digital printing |
| US12011920B2 (en) | 2019-12-29 | 2024-06-18 | Landa Corporation Ltd. | Printing method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA987808B (en) | 1999-03-01 |
| AU3749297A (en) | 1999-03-25 |
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