CA1088874A - Plate-type filter press - Google Patents
Plate-type filter pressInfo
- Publication number
- CA1088874A CA1088874A CA276,222A CA276222A CA1088874A CA 1088874 A CA1088874 A CA 1088874A CA 276222 A CA276222 A CA 276222A CA 1088874 A CA1088874 A CA 1088874A
- Authority
- CA
- Canada
- Prior art keywords
- plate
- guide
- filter
- filter plates
- filter press
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/19—Clamping means for closing the filter press, e.g. hydraulic jacks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
PLATE-TYPE FILTER PRESS
Abstract of the Disclosure A plate-type filter press having filter plates suspended by centrally disposed support means is provided with a flushing unit insertable from below into the space between adjacent filter plates. Guide means are arranged in the proximity of at least one of the upper corners of the filter plates to prevent the plates from swinging relative to the support means and still permit insertion of the flushing unit between adjacent filter plates.
Abstract of the Disclosure A plate-type filter press having filter plates suspended by centrally disposed support means is provided with a flushing unit insertable from below into the space between adjacent filter plates. Guide means are arranged in the proximity of at least one of the upper corners of the filter plates to prevent the plates from swinging relative to the support means and still permit insertion of the flushing unit between adjacent filter plates.
Description
;~
~ `; '.: ':`.`
,,~"":~
, . , . ~
;, `, .
This invention relates to a pIate-type filter press : ..
embodying centrally suspended ~ilter plates with guide~means ;
to prevent the plates from swinging back and forth and a ; ~`~
flushing device having a spray tube which i9 insertable from below and between adjacent filter plates. ; ;
In the filter presses hereto~ore employed, in par- ~-ti¢ular for the dewatering of sewage sludges, the filtration;
chambers are opened by pulling adjacent filter plates apart .
80 that the ilter cake can drop out. A disadvantage enccun~
tered in the use of known apparatus lies in that remnants of~
filter cake adhere to the filter cloths and that these rem-nants gradually decrease the permeability of the filter cloths. Accordingly, the cloths are flushed at regular ; ~;~
intervals with water ùnder pressure to remove such remaining ~olid9.
This flushing operation is carried out by moving a ; `~
spray tube intc;the space between every two adjacent, sepa~
rate filter '' -1-: ,',,, ,' ' ,,` :~, .
plates. The simplest solution, in view of kinematics, is a design wherein the spray tube is horizontally arranged and guided at both ends so as to be introduced from below into the open filter chambers between adjacent filter plates.
Heretofore, this washing operation has been a time consuming procedure. This is primarily due to the guide ele-ments which prevent the filter plates from swinging back and forth while they are being moved. Such prior art guide ele-ments are in the form of rods which extend adjacent the lower edges of the filter plates over the entire length of the fil-ter press and are en~aged from above by conventional lug means arranged on the filter plates. This design requires the rods to be unlocked and disengaged from the lugs before the spray nozzle can be operated.
The present invention provides in a plate-type filter press comprising vertically extending filter plates suspended by centrally disposed upper support means for horizontal step-wise movement to define a space between adjacent filter plates, a flushing device having horizontally arranged spray nozzles and mounted for movement from a position below said filter plates into and within the confines of said space between ad-jacent filter plates, guide means carried by at least one upper corner of each filter plate, and an elongated guide member extending horizontally and parallel to said upper support means adjacent said upper corner in position to engage said guide meansand pre~entthe filter platesErom swinginglaterally and back and forth relative to said support means. An advan-tage of this arrangement is that the filter plates can be cleaned by means of the flushing device without any prepara-tional work being required. A further advantage is that the improved features of the present invention serve to protect -~
the surroundings from being polluted by filter cakes dropping out of the filter press. Heretofore, filter cakes have occasionally --------------------------- -------------------.r~ -2-dropped onto the iow~r guide rods b~ splatteriny laterally from the filter press.
The guide elements according to our invention are no longer required to be spaced at maximum distance from the central suspension means, as would be the case if the guide elements were arrancJed at the lower corners of the filter plates. We have found, not only in large but also in medium ~, and small filter plates, that the space between the upper ' corners of the filter plate and the central suspension means ,' 1~ is sufficient to accommodate guide means to prevent oscillating movements.
The guide means according to our invention preferably consist of a closed guide block surrounding each guide rod.
The enclosing of the~guide rod assures optimum guiding action. ~ ~
In addition, the guide blocks may serve as suspension means for ~ ~, the filter plates in case the central suspension means should break for any reason. Accordingly, the filter plates will be '~
prevented from dropping down whereby repair work can be post~
poned until such time as repair is convenient. The guide block `~ '~
may be detachably mounted on the filter plates so as to be replaced whenever necessary.
Each guide block preferably comprises a U-shaped base ~
part and a locking p,iece secured thereon. This construction '' ' has the advantage of being particularly simple. Alsoi screw ~ ; ' ' 25- means may be provided for fastening not only the locking piece to the base part but also the base part to the filter plate. ; ~;
~s an additional advantage the surfaces of the guide , blocks directly in contact with the guide rod have chamfered "~
or beveled edges which reduces friction inside the guide means. - ~
~30 This is especially important in view of the fact that there '~' , should be a minimum of friction`between the inner surface of , -~`
3~
3~7~
the lockin~ piece and the guide rod. Friction is further reduced by forming the guide blocks of plastic material.
Description of the Drawing The inveiltion will now be described more in detail, reference being had to a preferred embodiment illustrated in the accompanying drawing, wherein:
FIG. 1 is a fraymental, front view o a filter plate with the support and guide means therefor being partially in section;
FIG. 2 is an enlarged fragmental fronk view of ~he guide means; and FIG. 3 is a fragmental sectional view taken generally along line 3-3 of FIG. 2 and showing a pair of adjacent ilter plates with flushing means therebetween.
. .
Detailed Description ~``
Referring now to FIG. 1, there is illustrated a filter plate 1 havins a conventional central suspension unit~2 enabling a displacement of the filter plate m a direction ;~
perpendicular to the plane of the filter plate or vertical to the drawing plane. In addition, guide means 3 lS provided at the upper corner of each plate to prevent the plates from swinging to and fro.
The guide means 3 is shown clearly in FIG. 2 and FIG. 3 .
and comprises a guide rod 4 which is completely enclosed around the entire surface thereof by a guide block 5. The guide block 5 comprises a U-shaped base part 6 and an ùpper locking ele-ment 7 connected thereto by screw members 8 which extend through the loaking element 7 and through the~base~part~6 and into the filter plate 1.
3a As shown in FIG. 3, the inner surfaces of the guide block 5 which contact the guide rod 4 have chamfered or bevelled , . .
. . .
- 108B~379~
edges to reduce fric-tion and thereby acilitate move~ent of the guide block 5 relative to ~he guide rod 4. To reduce friction further, the guide block 5 is made of plastic material.
In certain cases it may be sufficient to provide guide means 3 at only one corner of the filter plate 1. In all :~
cases tne lower plate area up to the central suspension unit ~ :
~ `; '.: ':`.`
,,~"":~
, . , . ~
;, `, .
This invention relates to a pIate-type filter press : ..
embodying centrally suspended ~ilter plates with guide~means ;
to prevent the plates from swinging back and forth and a ; ~`~
flushing device having a spray tube which i9 insertable from below and between adjacent filter plates. ; ;
In the filter presses hereto~ore employed, in par- ~-ti¢ular for the dewatering of sewage sludges, the filtration;
chambers are opened by pulling adjacent filter plates apart .
80 that the ilter cake can drop out. A disadvantage enccun~
tered in the use of known apparatus lies in that remnants of~
filter cake adhere to the filter cloths and that these rem-nants gradually decrease the permeability of the filter cloths. Accordingly, the cloths are flushed at regular ; ~;~
intervals with water ùnder pressure to remove such remaining ~olid9.
This flushing operation is carried out by moving a ; `~
spray tube intc;the space between every two adjacent, sepa~
rate filter '' -1-: ,',,, ,' ' ,,` :~, .
plates. The simplest solution, in view of kinematics, is a design wherein the spray tube is horizontally arranged and guided at both ends so as to be introduced from below into the open filter chambers between adjacent filter plates.
Heretofore, this washing operation has been a time consuming procedure. This is primarily due to the guide ele-ments which prevent the filter plates from swinging back and forth while they are being moved. Such prior art guide ele-ments are in the form of rods which extend adjacent the lower edges of the filter plates over the entire length of the fil-ter press and are en~aged from above by conventional lug means arranged on the filter plates. This design requires the rods to be unlocked and disengaged from the lugs before the spray nozzle can be operated.
The present invention provides in a plate-type filter press comprising vertically extending filter plates suspended by centrally disposed upper support means for horizontal step-wise movement to define a space between adjacent filter plates, a flushing device having horizontally arranged spray nozzles and mounted for movement from a position below said filter plates into and within the confines of said space between ad-jacent filter plates, guide means carried by at least one upper corner of each filter plate, and an elongated guide member extending horizontally and parallel to said upper support means adjacent said upper corner in position to engage said guide meansand pre~entthe filter platesErom swinginglaterally and back and forth relative to said support means. An advan-tage of this arrangement is that the filter plates can be cleaned by means of the flushing device without any prepara-tional work being required. A further advantage is that the improved features of the present invention serve to protect -~
the surroundings from being polluted by filter cakes dropping out of the filter press. Heretofore, filter cakes have occasionally --------------------------- -------------------.r~ -2-dropped onto the iow~r guide rods b~ splatteriny laterally from the filter press.
The guide elements according to our invention are no longer required to be spaced at maximum distance from the central suspension means, as would be the case if the guide elements were arrancJed at the lower corners of the filter plates. We have found, not only in large but also in medium ~, and small filter plates, that the space between the upper ' corners of the filter plate and the central suspension means ,' 1~ is sufficient to accommodate guide means to prevent oscillating movements.
The guide means according to our invention preferably consist of a closed guide block surrounding each guide rod.
The enclosing of the~guide rod assures optimum guiding action. ~ ~
In addition, the guide blocks may serve as suspension means for ~ ~, the filter plates in case the central suspension means should break for any reason. Accordingly, the filter plates will be '~
prevented from dropping down whereby repair work can be post~
poned until such time as repair is convenient. The guide block `~ '~
may be detachably mounted on the filter plates so as to be replaced whenever necessary.
Each guide block preferably comprises a U-shaped base ~
part and a locking p,iece secured thereon. This construction '' ' has the advantage of being particularly simple. Alsoi screw ~ ; ' ' 25- means may be provided for fastening not only the locking piece to the base part but also the base part to the filter plate. ; ~;
~s an additional advantage the surfaces of the guide , blocks directly in contact with the guide rod have chamfered "~
or beveled edges which reduces friction inside the guide means. - ~
~30 This is especially important in view of the fact that there '~' , should be a minimum of friction`between the inner surface of , -~`
3~
3~7~
the lockin~ piece and the guide rod. Friction is further reduced by forming the guide blocks of plastic material.
Description of the Drawing The inveiltion will now be described more in detail, reference being had to a preferred embodiment illustrated in the accompanying drawing, wherein:
FIG. 1 is a fraymental, front view o a filter plate with the support and guide means therefor being partially in section;
FIG. 2 is an enlarged fragmental fronk view of ~he guide means; and FIG. 3 is a fragmental sectional view taken generally along line 3-3 of FIG. 2 and showing a pair of adjacent ilter plates with flushing means therebetween.
. .
Detailed Description ~``
Referring now to FIG. 1, there is illustrated a filter plate 1 havins a conventional central suspension unit~2 enabling a displacement of the filter plate m a direction ;~
perpendicular to the plane of the filter plate or vertical to the drawing plane. In addition, guide means 3 lS provided at the upper corner of each plate to prevent the plates from swinging to and fro.
The guide means 3 is shown clearly in FIG. 2 and FIG. 3 .
and comprises a guide rod 4 which is completely enclosed around the entire surface thereof by a guide block 5. The guide block 5 comprises a U-shaped base part 6 and an ùpper locking ele-ment 7 connected thereto by screw members 8 which extend through the loaking element 7 and through the~base~part~6 and into the filter plate 1.
3a As shown in FIG. 3, the inner surfaces of the guide block 5 which contact the guide rod 4 have chamfered or bevelled , . .
. . .
- 108B~379~
edges to reduce fric-tion and thereby acilitate move~ent of the guide block 5 relative to ~he guide rod 4. To reduce friction further, the guide block 5 is made of plastic material.
In certain cases it may be sufficient to provide guide means 3 at only one corner of the filter plate 1. In all :~
cases tne lower plate area up to the central suspension unit ~ :
2 and to the guide means 3 is free of additional components, so that a spray nozzle 10 of a flushing device 11 can be introduced from below and in parallel relationship with the plane of the filter plates 1 and the space between adjacent filter plates 1.
.. ~ .
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., :"
~':
.. ::
..
, . ~ ''' `: ' . - . .
' ` .:
~, -5- ~ ~
.. ~ .
"' ':
., :"
~':
.. ::
..
, . ~ ''' `: ' . - . .
' ` .:
~, -5- ~ ~
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A plate-type filter press comprising vertically extending filter plates suspended by centrally disposed upper support means for horizontal stepwise movement to define a space between adjacent filter plates, a flushing device having horizontally arranged spray nozzles and mounted for movement from a position below said filter plates into and within the confines of said space between adjacent filter plates, guide means carried by at least one upper corner of each filter plate, and an elongated guide member extending horizontally and parallel to said upper support means adjacent said upper corner in position to engage said guide means and prevent the filter plates from swinging laterally and back and forth rela-tive to said support means.
2. A plate-type filter press as defined in Claim 1, in which said guide member comprises a guide rod and each said guide means comprises a closed guide block mounted at the up-per corner of each filter plate and closed around and contac-ting said guide rod.
3. A plate-type filter press as defined in Claim 2, in which each said guide block comprises a U-shaped base mem-ber and a locking element secured thereon.
4. A plate-type filter press as defined in Claim 2, in which the inner surfaces of said guide block which contact said guide rod have chamfered edges.
5. A plate-type filter press as defined in Claim 2, in which each said guide block is made of plastic material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2618437.2 | 1976-04-27 | ||
| DE19762618437 DE2618437C2 (en) | 1976-04-27 | 1976-04-27 | Plate filter press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1088874A true CA1088874A (en) | 1980-11-04 |
Family
ID=5976398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA276,222A Expired CA1088874A (en) | 1976-04-27 | 1977-04-14 | Plate-type filter press |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS52131269A (en) |
| CA (1) | CA1088874A (en) |
| CH (1) | CH616597A5 (en) |
| DE (1) | DE2618437C2 (en) |
| FR (1) | FR2349352A1 (en) |
| GB (1) | GB1566159A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920385A1 (en) * | 1979-05-19 | 1980-11-27 | Rittershaus & Blecher Gmbh | Prevention of filter plates swinging - by mounting two removable beams along the two upper outer corners of the plate which need only be removed to change plates or cloths |
| DE8002233U1 (en) * | 1980-01-30 | 1980-04-30 | Rittershaus & Blecher Gmbh, 5600 Wuppertal | PLATE FILTER PRESS WITH STOP BARS FOR PLATE GUIDE |
| DE3606301A1 (en) * | 1986-02-27 | 1987-09-03 | Rittershaus & Blecher Gmbh | FILTER PRESS |
| DE4239005A1 (en) * | 1992-11-19 | 1994-06-09 | Passavant Werke | Suspension and guide device for the filter plates of a filter press |
| JPH0648673U (en) * | 1992-12-14 | 1994-07-05 | 積水化学工業株式会社 | Wound dressing |
| DE19716927C1 (en) * | 1997-04-23 | 1998-05-20 | Netzsch Erich Holding | Filter plate |
| CN107952267A (en) * | 2017-10-31 | 2018-04-24 | 无锡德沃精工设备有限公司 | One kind cleaning convenient planer-type filter press of filter residue |
| CN108404472B (en) * | 2018-05-11 | 2024-03-15 | 北京同创碧源水务科技发展有限公司 | Filter-pressing unit of filter press and filter press |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE110883C (en) * | ||||
| GB674032A (en) * | 1947-02-24 | 1952-06-18 | Cherry Burrell Corp | Improvements in or relating to plate apparatus in particular to plate-type heat exchangers and filter presses |
| DE1008711B (en) * | 1952-12-08 | 1957-05-23 | Ziemann A G A | Mash filter |
| DE1109647B (en) * | 1957-12-24 | 1961-06-29 | Rittershaus & Blecher | Filter press |
| DE1158478B (en) * | 1960-11-25 | 1963-12-05 | Christoffers Maschinenfabrik A | Filter press for higher pressures with alternating filter frames and filter plates |
| DE1302541B (en) * | 1961-03-25 | 1972-05-31 | ||
| DE1240820B (en) * | 1964-05-30 | 1967-05-24 | Klara Emele Geb Messmer | Automatic shifting device for plates and frames in filter presses |
| DE1461447A1 (en) * | 1964-12-11 | 1968-12-19 | Passavant Werke | Cleaning facility |
| DE1611097C3 (en) * | 1968-01-12 | 1973-09-27 | Paul 4740 Oelde Hammelmann | Cleaning device, in particular for plate filter presses |
| DE6927408U (en) * | 1969-07-09 | 1969-11-13 | Passavant Werke | FILTER PRESS WITH CLEANING DEVICE. |
| DE2119295C3 (en) * | 1971-04-21 | 1973-07-19 | Pumpen & Maschinenbau Abel KG, 4300 Essen | Cleaning device |
| JPS4865515U (en) * | 1971-10-30 | 1973-08-20 | ||
| JPS506669A (en) * | 1973-05-19 | 1975-01-23 | ||
| CH603209A5 (en) * | 1975-07-03 | 1978-08-15 | Passavant Werke |
-
1976
- 1976-04-27 DE DE19762618437 patent/DE2618437C2/en not_active Expired
-
1977
- 1977-02-02 JP JP982477A patent/JPS52131269A/en active Granted
- 1977-04-14 CA CA276,222A patent/CA1088874A/en not_active Expired
- 1977-04-19 GB GB1624977A patent/GB1566159A/en not_active Expired
- 1977-04-21 CH CH493077A patent/CH616597A5/en not_active IP Right Cessation
- 1977-04-26 FR FR7712503A patent/FR2349352A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| CH616597A5 (en) | 1980-04-15 |
| FR2349352A1 (en) | 1977-11-25 |
| DE2618437A1 (en) | 1977-11-10 |
| DE2618437C2 (en) | 1982-11-25 |
| JPS6236727B2 (en) | 1987-08-08 |
| JPS52131269A (en) | 1977-11-04 |
| GB1566159A (en) | 1980-04-30 |
| FR2349352B1 (en) | 1982-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |