CN112957784A - Sludge filter press and treatment method thereof - Google Patents
Sludge filter press and treatment method thereof Download PDFInfo
- Publication number
- CN112957784A CN112957784A CN202110361415.1A CN202110361415A CN112957784A CN 112957784 A CN112957784 A CN 112957784A CN 202110361415 A CN202110361415 A CN 202110361415A CN 112957784 A CN112957784 A CN 112957784A
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- China
- Prior art keywords
- frame
- plate
- filter
- filter cloth
- holes
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- 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
- B01D25/32—Removal of the filter cakes
-
- 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
- B01D25/21—Plate and frame presses
- B01D25/215—Construction of the filter plates, frames
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a sludge filter press, which comprises a frame, wherein a plurality of plate frames are arranged on the frame in a sliding manner, an oil cylinder for driving the plate frames to slide on the frame is installed at one end of the frame, the plate frames comprise outer frames, pressing plates are fixed on the inner sides of the outer frames, filter plates are fixed on the edges of one sides of the outer frames, a plurality of filtrate holes are uniformly formed in the filter plates, filter cloth is installed on the outer sides of the filter plates, mounting grooves are formed in the edges of the filter plates, a plurality of threaded holes and a cleaning liquid jack are uniformly formed in the mounting grooves, first through holes which correspond to the threaded holes one by one are formed in the filter cloth, the edges of the filter cloth are pressed and connected in the mounting grooves through rubber tubes, the open ends of the rubber tubes are inserted into the. The invention can improve the defects of the prior art, prolong the service life of the filter cloth and facilitate the disassembly and replacement of the filter cloth.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a sludge filter press and a treatment method thereof.
Background
The sludge filter press is equipment for dehydrating sludge with high water content. The water content of the dewatered mud cake is reduced, and the mud cake is convenient to transport and recycle. Sludge filter presses are of many types, and plate and frame filter presses are widely used due to their high dehydration rate. The separation of mud and moisture is realized through the filter cloth in the sheet frame to the sheet frame pressure filter, and damage and pollution can appear to the filter cloth in the use, and this is just need to be changed the filter cloth, but because the filter cloth takes place the adhesion with sheet frame and remaining mud easily, leads to not being convenient for to dismantle the change operation, leads to the filter cloth to appear the large tracts of land damage easily when dismantling simultaneously for the filter cloth can't carry out recovery processing and recycle.
Disclosure of Invention
The invention aims to provide a sludge filter press and a treatment method thereof, which can overcome the defects of the prior art, prolong the service life of filter cloth and facilitate the disassembly and replacement of the filter cloth.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A sludge filter press comprises a frame, wherein a plurality of plate frames are arranged on the frame in a sliding manner, an oil cylinder for driving the plate frames to slide on the frame is installed at one end of the frame, each plate frame comprises an outer frame, a pressing plate is fixed on the inner side of the outer frame, a filter plate is fixed on the edge of one side of the outer frame, a plurality of filtrate holes are uniformly formed in the filter plate, filter cloth is installed on the outer side of each filter plate, a liquid supply hole is formed in the top of each outer frame, liquid supply holes of adjacent plate frames are connected end to end when the plate frames are closed, a liquid inlet hole communicated with the liquid supply hole is formed below the liquid supply hole, the liquid inlet hole is located on the outer; the edge of filter plate is provided with the mounting groove, evenly be provided with a plurality of screw hole and a washing liquid jack in the mounting groove, be provided with the first through-hole with the screw hole one-to-one on the filter cloth, the rubber tube is with the edge crimping of filter cloth in the mounting groove, the open end of rubber tube is pegged graft on the washing liquid jack, be provided with the second through-hole with the screw hole one-to-one on the rubber tube, the second through-hole is kept apart with the inside seal of rubber tube, the lateral wall of rubber tube is provided with a plurality of drain hole, the bolt passes and is connected with the screw hole behind second through-hole and the first through-hole, be connected with the washing liquid pipe with washing liquid jack intercommunication on the frame, one side that the frame is not fixed with the filter plate.
Preferably, the rubber sealing strip comprises a base plate, a protruding portion is arranged in the center of the base plate, pressing plates are symmetrically arranged on two sides of the protruding portion and fixed on the base plate, when the rubber sealing strip is in compression joint with the rubber tube in a sealing mode, the pressing plates are inserted into a gap between the rubber tube and the mounting groove, and the protruding portion is in compression joint with the rubber tube.
Preferably, the edge of the mounting groove is provided with an inclined plane part, and the pressing plate is provided with a plurality of third through holes.
Preferably, an elastic sheet is arranged between every two adjacent threaded holes, the middle of the elastic sheet is connected with the bottom of the mounting groove through a spring, arc-shaped portions are arranged at two ends of the elastic sheet respectively, the arc-shaped portions are in sliding compression joint with the bolts, and the width of the elastic sheet is smaller than the distance between the two pressing plates.
Preferably, the elastic sheet is provided with a through groove.
Preferably, a cleaning solution guide hole communicated with the cleaning solution insertion hole is formed in the filter plate, and the cleaning solution guide hole is communicated with the filtrate hole.
The treatment method of the sludge filter press comprises the following steps:
A. the oil cylinder drives the plate frames to be pressed and closed mutually, the rubber sealing strips are pressed and sealed with the rubber pipes on the adjacent frames, turbid liquid containing sludge is injected into each plate frame through the liquid supply holes, and filtrate is discharged through the liquid discharge holes after passing through the filter cloth;
B. after filtering, the oil cylinder drives the plate frame to separate, so that the mud cake falls off;
C. injecting cleaning liquid into the rubber tube through a cleaning liquid tube, and spraying the cleaning liquid out of the liquid outlet hole to wash the pressing area;
D. checking the state of the filter cloth, and replacing the filter cloth if the filter cloth is damaged or the blocked area exceeds 10%; when the filter cloth is replaced, the bolts used for fixing the filter cloth are firstly detached, then the rubber pipes are detached, the filter cloth to be replaced is taken down, finally the filter cloth to be used is laid outside the filter plate, the first through holes are aligned to the corresponding threaded holes, the rubber pipes are inserted back into the mounting grooves, and the bolts are used for fixing.
Preferably, in the step C, the plate frame is closed again through the oil cylinder before flushing, and then the plate frame is driven to be separated along with the beginning of the oil cylinder, so that the flushing is synchronously performed.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: according to the invention, through designing a brand-new filter cloth mounting structure, the service life of the filter cloth is obviously prolonged, and the replacement convenience is obviously improved. According to the invention, the rubber tube and the bolt are used for compression-jointing and fixing the filter cloth, and the cleaning liquid is conveyed and sprayed by the rubber tube, so that the direct compression-jointing part of the filter cloth is effectively washed, the probability of adhesion and damage during filter cloth replacement is effectively reduced, the structure is compact, and the sealing performance of the edge during plate frame compression is ensured by compression-jointing the rubber sealing strip and the rubber tube. The clamp plate on the rubber sealing strip is used for limiting the rubber tube, dislocation and excessive deformation occur to the rubber tube when the bulge is avoided being pressed on the rubber tube, the inclined plane part on the mounting groove is convenient for dismounting the rubber tube on the one hand, and the clamp plate can be guided when the clamp plate is inserted, so that clamping stagnation of the clamp plate and the mounting groove is avoided. When cleaning is carried out by using the cleaning liquid, after the cleaning liquid sprayed outwards is sprayed onto the rubber sealing strip, a larger area around the mounting groove can be covered under the reflection of the convex part and the pressing plate, so that the cleaning effect is further improved. And the third through hole on the pressing plate is used for guiding the cleaning liquid, so that the cleaning effect of the cleaning liquid on the rubber sealing strip is ensured. The shell fragment of rubber tube below installation is under the extrusion of bolt, and the middle part of shell fragment can produce elastic deformation (uplift) to form small gap between rubber tube and mounting groove, the washing liquid of being convenient for flows through and washs the rubber tube below, and the shell fragment middle part can be pushed down when the crimping power is applyed to rubber sealing strip, and its elastic deformation can be dispersed to whole shell fragment on, thereby has guaranteed that the crimping leakproofness of rubber sealing strip and rubber tube is not destroyed. Meanwhile, the elastic clamping of the elastic sheet to the bolt can also prevent the bolt from loosening. The cleaning liquid diversion holes on the filter plate can divert the cleaning liquid to the whole filter plate, and the contact surface of the filter plate and the filter cloth is cleaned, so that the filter cloth can be fully cleaned after being filtered every time, sludge adhesion connection blocks are reduced, and the service life of the filter cloth is prolonged.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Fig. 2 is a block diagram of a panel frame in an embodiment of the present invention.
Fig. 3 is a structural view of a rubber tube installed in an installation groove in an embodiment of the present invention.
Fig. 4 is a partially enlarged view of a portion a in fig. 3 (the arrow in the figure indicates the flow direction of the cleaning liquid).
FIG. 5 is a structural view of a rubber weather strip according to an embodiment of the present invention.
Fig. 6 is a structural view of the elastic sheet, the filter cloth and the rubber tube installed in the installation groove in one embodiment of the present invention.
Fig. 7 is an enlarged view of a portion of a filter plate according to an embodiment of the present invention.
In the figure: 1. a frame; 2. driving the plate frame; 3. an oil cylinder; 4. an outer frame; 5. pressing a plate; 6. filtering the plate; 7. a filtrate well; 8. filtering cloth; 9. a liquid supply hole; 10. a liquid inlet hole; 11. a drain hole; 12. mounting grooves; 13. a threaded hole; 14. a cleaning liquid insertion hole; 15. a first through hole; 16. a rubber tube; 17. a second through hole; 18. a liquid outlet hole; 19. a bolt; 20. cleaning a liquid pipe; 21. a rubber seal strip; 22. a substrate; 23. a boss portion; 24. pressing a plate; 25. an inclined plane part; 26. a third through hole; 27. a spring plate; 28. a spring; 29. an arc-shaped portion; 30. a through groove; 31. a cleaning fluid diversion hole; 32. a chute.
Detailed Description
Referring to fig. 1-7, a specific embodiment of the invention includes a frame 1, a plurality of plate frames 2 are slidably disposed on the frame 1, an oil cylinder 3 for driving the plate frames 2 to slide on the frame 1 is mounted at one end of the frame 1, the plate frames 2 include an outer frame 4, a pressure plate 5 is fixed on the inner side of the outer frame 4, a filter plate 6 is fixed on the edge of one side of the outer frame 4, a plurality of filtrate holes 7 are uniformly disposed on the filter plate 6, filter cloth 8 is mounted on the outer side of the filter plate 6, a liquid supply hole 9 is disposed at the top of the outer frame 4, when the plate frame 2 is closed, the liquid supply holes 9 of adjacent plate frames 2 are connected end to end, a liquid inlet hole 10 communicated with the liquid supply hole 9 is disposed below the liquid supply hole 9, the liquid inlet hole 10 is disposed on the outer side of the pressure plate 5; the edge of the filter plate 6 is provided with a mounting groove 12, a plurality of threaded holes 13 and a cleaning solution jack 14 are uniformly arranged in the mounting groove 12, first through holes 15 corresponding to the threaded holes 13 one by one are arranged on the filter cloth 8, the rubber tube 16 presses the edge of the filter cloth 8 in the mounting groove 12, the open end of the rubber tube 16 is inserted in the cleaning solution jack 14, second through holes 17 corresponding to the threaded holes 13 one by one are arranged on the rubber tube 16, the second through holes 17 are isolated from the inside of the rubber tube 16 in a sealing way, a plurality of liquid outlet holes 18 are arranged on the side wall of the rubber tube 16, a bolt 19 passes through the second through holes 17 and the first through holes 15 and then is connected with the threaded holes 13, a cleaning solution tube 20 communicated with the cleaning solution jack 14 is connected on the outer frame 4, a rubber sealing strip 21 is, the rubber sealing strip 21 is in pressure sealing engagement with the rubber tube 16 on the adjacent frame 4 when the panel frame 2 is closed. The rubber sealing strip 21 comprises a base plate 22, a protruding portion 23 is arranged in the center of the base plate 22, pressing plates 24 are symmetrically arranged on two sides of the protruding portion 23, the pressing plates 24 are fixed on the base plate 22, when the rubber sealing strip 21 and the rubber tube 16 are in compression joint sealing, the pressing plates 24 are inserted into a gap between the rubber tube 16 and the installation groove 12, and the protruding portion 23 is in compression joint on the rubber tube 16. The edge of the mounting groove 12 is provided with an inclined plane part 25, and the pressing plate 24 is provided with a plurality of third through holes 26. An elastic sheet 27 is arranged between two adjacent threaded holes 13, the middle part of the elastic sheet 27 is connected with the bottom of the mounting groove 12 through a spring 28, arc parts 29 are respectively arranged at two ends of the elastic sheet 27, the arc parts 29 are in sliding compression joint with the bolts 19, and the width of the elastic sheet 27 is smaller than the distance between the two pressing plates 24. The elastic sheet 27 is provided with a through groove 30. The cleaning liquid diversion hole 31 communicated with the cleaning liquid jack 14 is arranged in the filter plate 6, and the cleaning liquid diversion hole 31 is communicated with the filtrate hole 7.
The middle position of the bottom surface of the elastic sheet 27 is provided with a sliding groove 32, the sliding direction of the sliding groove 32 and the mounting groove 12 are in the same plane, and the top of the spring 28 is clamped in the sliding groove 32 in a sliding manner. When the spring plate 27 is pressed down, the top of the spring 28 can slide in the slide groove 32, thereby changing the supporting angle of the spring 28. During the pressing process of the elastic sheet 27, if the pressing force changes in position and angle, the spring 28 can realize the self-adaptive change of the supporting angle, thereby improving the uniformity of the supporting force of the elastic sheet 27 on the rubber tube 16.
The treatment method of the sludge filter press is characterized by comprising the following steps:
A. the oil cylinder 3 drives the plate frames 2 to be pressed and closed mutually, the rubber sealing strip 21 is pressed and sealed with the rubber tube 16 on the adjacent frame 4, turbid liquid containing sludge is injected into each plate frame 2 through the liquid supply hole 9, and filtrate is discharged through the liquid discharge hole 11 after passing through the filter cloth 8;
B. after filtering, the oil cylinder 3 drives the plate frame 2 to separate, so that the mud cake falls off;
C. cleaning liquid is injected into the rubber tube 16 through the cleaning liquid tube 20, and the cleaning liquid is sprayed out from the liquid outlet hole 18 to wash the pressing area;
D. checking the state of the filter cloth 8, and if the filter cloth 8 is damaged or the blocked area exceeds 10%, replacing the filter cloth 8; when the filter cloth is replaced, the bolt 19 for fixing the filter cloth 8 is firstly detached, then the rubber tube 16 is detached, the filter cloth 8 to be replaced is taken down, finally the filter cloth 8 to be used is laid outside the filter plate 6, the first through hole 15 is aligned with the corresponding threaded hole 13, the rubber tube 16 is inserted back into the mounting groove 12, and the bolt 19 is used for fixing.
In the step C, the plate frame 2 is closed again through the oil cylinder 3 before flushing, and then the plate frame 2 is driven to be separated along with the oil cylinder 3 to be flushed synchronously.
The invention can effectively clean the filter cloth 8, prolong the service life of the filter cloth 8, reduce the adhesion of sludge on the filter cloth and reduce the possibility of damage of the filter cloth 8 during disassembly. Meanwhile, the existing plate-and-frame filter press is also very suitable for upgrading and reconstruction according to the invention, and the reconstruction cost is lower.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a sludge filter press, includes frame (1), and frame (1) is gone up to slide and is provided with a plurality of sheet frame (2), and frame (1) one end is installed and is used for driving gliding hydro-cylinder (3) of sheet frame (2) in frame (1), its characterized in that: the plate frame (2) comprises an outer frame (4), a pressing plate (5) is fixed on the inner side of the outer frame (4), a filter plate (6) is fixed on the edge of one side of the outer frame (4), a plurality of filtrate holes (7) are uniformly formed in the filter plate (6), filter cloth (8) is installed on the outer side of the filter plate (6), a liquid supply hole (9) is formed in the top of the outer frame (4), the liquid supply holes (9) of adjacent plate frames (2) are connected end to end when the plate frame (2) is closed, a liquid inlet hole (10) communicated with the liquid supply hole (9) is formed below the liquid supply hole (9), the liquid inlet hole (10) is located on the outer side, away from the filter plate (6), of the pressing plate (5), a liquid discharge hole (11) is formed in the bottom of the outer frame (4), and the liquid; the edge of the filter plate (6) is provided with a mounting groove (12), a plurality of threaded holes (13) and a cleaning liquid jack (14) are uniformly arranged in the mounting groove (12), first through holes (15) which are in one-to-one correspondence with the threaded holes (13) are arranged on the filter cloth (8), the rubber tube (16) presses the edge of the filter cloth (8) in the mounting groove (12), the open end of the rubber tube (16) is inserted into the cleaning liquid jack (14), second through holes (17) which are in one-to-one correspondence with the threaded holes (13) are arranged on the rubber tube (16), the second through holes (17) are isolated from the interior of the rubber tube (16) in a sealing way, a plurality of liquid outlet holes (18) are arranged on the side wall of the rubber tube (16), a bolt (19) is connected with the threaded holes (13) after penetrating through the second through holes (17) and the first through holes (15), a cleaning liquid pipe (20) communicated with, one side of the frame (4) which is not fixed with the filter plate (6) is fixed with a rubber sealing strip (21), and when the plate frame (2) is closed, the rubber sealing strip (21) is in compression joint with a rubber pipe (16) on the adjacent frame (4).
2. The sludge filter press according to claim 1, wherein: the rubber sealing strip (21) comprises a base plate (22), a protruding portion (23) is arranged at the center of the base plate (22), pressing plates (24) are symmetrically arranged on two sides of the protruding portion (23), the pressing plates (24) are fixed on the base plate (22), when the rubber sealing strip (21) and the rubber tube (16) are in compression joint sealing, the pressing plates (24) are inserted into a gap between the rubber tube (16) and the installation groove (12), and the protruding portion (23) is in compression joint on the rubber tube (16).
3. The sludge filter press according to claim 2, wherein: the edge of the mounting groove (12) is provided with an inclined plane part (25), and the pressing plate (24) is provided with a plurality of third through holes (26).
4. The sludge filter press according to claim 3, wherein: an elastic sheet (27) is arranged between every two adjacent threaded holes (13), the middle of the elastic sheet (27) is connected with the bottom of the mounting groove (12) through a spring (28), arc-shaped portions (29) are arranged at two ends of the elastic sheet (27) respectively, the arc-shaped portions (29) are in sliding compression joint with the bolts (19), and the width of the elastic sheet (27) is smaller than the distance between the two pressing plates (24).
5. The sludge filter press according to claim 4, wherein: the elastic sheet (27) is provided with a through groove (30).
6. The sludge filter press according to claim 1, wherein: and a cleaning liquid diversion hole (31) communicated with the cleaning liquid jack (14) is formed in the filter plate (6), and the cleaning liquid diversion hole (31) is communicated with the filtrate hole (7).
7. A method for treating a sludge press filter according to any one of claims 1 to 6, characterized by comprising the steps of:
A. the oil cylinder (3) drives the plate frames (2) to be pressed and closed mutually, the rubber sealing strip (21) is pressed and sealed with the rubber pipe (16) on the adjacent frame (4), turbid liquid containing sludge is injected into each plate frame (2) through the liquid supply hole (9), and filtrate is discharged through the liquid discharge hole (11) after passing through the filter cloth (8);
B. after filtering, the oil cylinder (3) drives the plate frame (2) to separate, so that the mud cake falls off;
C. cleaning liquid is injected into the rubber tube (16) through a cleaning liquid tube (20), and the cleaning liquid is sprayed out from the liquid outlet hole (18) to wash the pressing area;
D. checking the state of the filter cloth (8), and replacing the filter cloth (8) if the filter cloth (8) is damaged or the blocking area exceeds 10%; when the filter cloth is replaced, the bolts (19) used for fixing the filter cloth (8) are firstly detached, then the rubber pipes (16) are detached, the filter cloth (8) to be replaced is taken down, finally the filter cloth (8) to be used is laid on the outer side of the filter plate (6), the first through holes (15) are aligned to the corresponding threaded holes (13), the rubber pipes (16) are inserted back into the mounting grooves (12), and the bolts (19) are used for fixing.
8. The method for processing a sludge filter press according to claim 7, wherein: and in the step C, the plate frame (2) is closed again through the oil cylinder (3) before flushing, and then the plate frame (2) is driven to be separated along with the oil cylinder (3) to be flushed synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110361415.1A CN112957784B (en) | 2021-04-02 | 2021-04-02 | Sludge filter press and treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110361415.1A CN112957784B (en) | 2021-04-02 | 2021-04-02 | Sludge filter press and treatment method thereof |
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| Publication Number | Publication Date |
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| CN112957784A true CN112957784A (en) | 2021-06-15 |
| CN112957784B CN112957784B (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110361415.1A Active CN112957784B (en) | 2021-04-02 | 2021-04-02 | Sludge filter press and treatment method thereof |
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| CN (1) | CN112957784B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114306688A (en) * | 2022-01-22 | 2022-04-12 | 浙江杰为凯过滤科技有限公司 | Biological medicine level totally closed pressure filter |
| CN114455795A (en) * | 2022-03-06 | 2022-05-10 | 广州绿邦环境技术有限公司 | Filter press filter plate with sludge drying function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114306688A (en) * | 2022-01-22 | 2022-04-12 | 浙江杰为凯过滤科技有限公司 | Biological medicine level totally closed pressure filter |
| CN114455795A (en) * | 2022-03-06 | 2022-05-10 | 广州绿邦环境技术有限公司 | Filter press filter plate with sludge drying function |
| CN114455795B (en) * | 2022-03-06 | 2023-12-12 | 广州绿邦环境技术有限公司 | Filter press filter plate with sludge drying function |
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| CN112957784B (en) | 2021-10-26 |
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