CN115253457A - Flat disc filter and filtering method thereof - Google Patents
Flat disc filter and filtering method thereof Download PDFInfo
- Publication number
- CN115253457A CN115253457A CN202211012641.XA CN202211012641A CN115253457A CN 115253457 A CN115253457 A CN 115253457A CN 202211012641 A CN202211012641 A CN 202211012641A CN 115253457 A CN115253457 A CN 115253457A
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- Prior art keywords
- filter
- washing
- flat
- filter plate
- flat disc
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-
- 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
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/17—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables
- B01D33/19—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables the table surface being divided in successively tilted sectors or cells, e.g. for discharging the filter cake
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- 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
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- 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
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- 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
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
-
- 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
- B01D33/80—Accessories
- B01D33/801—Driving means, shaft packing systems or the like
-
- 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
- B01D33/80—Accessories
- B01D33/803—Accessories in which the filtering elements are moved between filtering operations ; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- 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
- B01D33/80—Accessories
- B01D33/804—Accessories integrally combined with devices for controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
Abstract
The invention discloses a flat disc filter and a filtering method thereof, and the flat disc filter comprises a base body and a flat disc body which can rotate outside the base body, wherein a blanking auger, a distributing device and a washing pipeline are arranged around the base body, a filter screen is arranged on the surface of the flat disc body, the filter screen is detachably arranged on a filter disc below the flat disc body, a conical closed container is arranged below the flat disc body, a discharge port and a communicating pipe are arranged on the closed container, a triangular area is also arranged between the blanking auger and the distributing device, the triangular area is formed by a first scraper plate and back blowing air at two sides, and the angle between the first scraper plate and the back blowing air is 30-45 degrees; the flat disc filter and the filtering method thereof can ensure that materials are flat and stable when in use, can not generate the phenomena of dust raising and the like, can timely adjust the size of the filter holes according to the specifications of the materials, improve the filtering efficiency and are suitable for popularization and use.
Description
Technical Field
The invention relates to the technical field of flat disc filtering equipment, in particular to a flat disc filter and a filtering method thereof.
Background
The production process of the aluminum oxide comprises the steps of preparing raw ore pulp, pre-desiliconizing the ore pulp, dissolving out under high pressure, diluting the dissolved ore pulp, separating and washing red mud, decomposing fine seeds, grading and washing aluminum hydroxide, roasting the aluminum hydroxide, evaporating mother liquor and causticizing soda.
The slurry containing aluminum hydroxide generated in the fine seed decomposition process is usually filtered, separated and washed by a flat disc filter; and traditional flat-disc filter is usually along with a large amount of aluminium hydroxide dust when aluminium hydroxide rotary filtration, influences air circumstance in the workshop, and can't in time adjust the filtration demand according to aluminium hydroxide filter cake specification when using, and traditional flat-disc filter is difficult for getting rid of the alkali on filter cake surface when washing in addition, influences production quality, and it is inconvenient to use.
Disclosure of Invention
The invention aims to solve the problems and provide a flat disc filter and a filtering method thereof, wherein the flat disc filter can ensure that materials are flat and stable when in use, the phenomena of dust emission and the like are avoided, the size of a filter hole can be timely adjusted according to the specification of the materials, the filtering efficiency is improved, alkali on the surface of an aluminum hydroxide filter cake can be timely removed, and the product quality is improved.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a flat-disk filter, includes the outside rotatable flat-disk body of base member and base member, be equipped with unloading auger, distributing device and washing pipeline way around the base member, the surface of flat-disk body is equipped with the filter screen, and filter screen detachable establishes on the filter disc of below, the below of flat-disk body is equipped with conical airtight container, airtight container is last to be equipped with discharge gate and communicating pipe.
Preferably, a triangular area is further arranged between the blanking auger and the distributing device, the triangular area is formed by the first scraping plates on two sides and the reverse blow, and the angle between the first scraping plates and the reverse blow is 30-45 degrees.
Preferably, a second scraper and a third scraper are respectively arranged on two sides of the washing pipeline, a plurality of flushing pipes are uniformly arranged below the washing pipeline along the length direction of the washing pipeline, a washing area is formed between the second scraper and the third scraper, and the temperature of washing water in the washing pipeline is 90-100 ℃.
Preferably, a support is arranged between the closed container and the flat disc body, the filter disc is arranged on the support, the filter disc is composed of a plurality of filter plates with the same size, and the size of filter holes in the filter plates is adjustable.
Preferably, the filter plate includes lower filter plate and upper filter plate, lower filter plate is fixed on the support, lower filter plate surface is equipped with the arc slide rail, the bottom surface of upper filter plate is equipped with the gyro wheel with arc slide rail matched with, and upper filter plate passes through the gyro wheel and rotates on lower filter plate with the cooperation of arc slide rail, when lower filter plate and upper filter plate coincide, the filtration pore on the lower filter plate corresponds with the filtration pore on the upper filter plate, when upper filter plate is rotatory on lower filter plate, filtration pore on the lower filter plate is crisscross with the filtration pore on the upper filter plate.
Preferably, when the filter plates are opened, every two adjacent upper filter plates are contacted.
A filtering method of a flat disc filter comprises the following steps: (1) Connecting the closed container with a vacuum pump through a communicating pipe, and sealing the discharge hole; (2) Conveying the material to be filtered into the flat disc body by a blanking auger; (3) The flat disc body is driven to enable the materials to sequentially enter a triangular area, a material distribution area and a washing area; (4) driving a vacuum pump to generate negative pressure in the closed container; (5) The filtered slurry falls into a closed container to complete filtration, and a discharge port is opened to collect the slurry.
Preferably, the washing zone in step (3) comprises a first washing and a second washing, the first washing is carried out by washing with weak filtrate, and the second washing is carried out by washing with hot water, wherein the weak filtrate is liquid after the second washing.
The invention discloses a flat disc filter and a filtering method thereof, wherein the flat disc filter comprises a base body and a flat disc body which can rotate outside the base body, a blanking auger, a distributing device and a washing pipeline are arranged around the base body, a filter screen is arranged on the surface of the flat disc body and is fixed on a filter disc below the flat disc body, a conical closed container is arranged below the flat disc body, a discharge port and a communicating pipe are arranged on the closed container, a triangular area is also arranged between the blanking auger and the distributing device and consists of first scrapers at two sides and back blowing, and the angle between the first scrapers and the back blowing is 30-45 degrees; compared with the prior art, the aluminum hydroxide filter has the beneficial effects that the material can be ensured to be flat and stable when in use, the phenomena of dust emission and the like can not occur, in addition, the size of the filter hole can be timely adjusted according to the material specification, the filtering efficiency is improved, the alkali on the surface of an aluminum hydroxide filter cake can be timely removed, and the product quality is improved.
Drawings
FIG. 1 is a first structural schematic diagram of a flat disc filter of the present invention.
FIG. 2 is a second structural schematic diagram of a flat-disc filter according to the present invention.
FIG. 3 is a third schematic structural view of a flat disc filter of the present invention.
FIG. 4 is a schematic structural diagram of a closed container in a flat-disc filter according to the present invention.
FIG. 5 is a schematic view of the structure of a filter disc in a flat disc filter according to the present invention.
FIG. 6 is a schematic structural diagram of a filter plate in a flat disc filter according to the present invention.
In the figure: 1. a flat pan body; 11. a triangular area; 12. filtering with a screen; 13. a filter disc; 131. filtering the plate; 1311. a lower filter plate; 1312. an upper filter plate; 1313. an arc-shaped slide rail; 2. a substrate; 21. a blanking auger; 22. a first squeegee; 23. back blowing; 24. a distributing device; 25. a second squeegee; 26. washing a pipeline; 27. a flush tube; 28. a third squeegee; 3. a closed container; 31. a discharge port; 32. a communicating pipe; 33. and (4) a bracket.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Referring to fig. 1-6, a flat disc filter comprises a base body 2 and a flat disc body 1 which is rotatable outside the base body 2, wherein a blanking auger 21, a distributing device 24 and a washing pipeline 26 are arranged around the base body 2, materials are uniformly laid through the distributing device 24 after being laid into the flat disc body 1 through the blanking auger 21, a filter screen 12 is arranged on the surface of the flat disc body 1, the filter screen 12 is detachably arranged on a filter disc 13 below the flat disc body 1, a conical closed container 3 is arranged below the flat disc body 1, a discharge port 31 and a communicating pipe 32 are arranged on the closed container 3, the discharge port 31 is normally in a closed state, the communicating pipe 32 is connected with a vacuum pump, when the flat disc filter is used, the materials are conveyed to the flat disc body 1 through the blanking auger 21 and pass through the distributing device 24 and the washing pipeline 26, so that the materials are more uniform in the flat disc body 1, the slurry is filtered out conveniently, and the washing pipeline is convenient for washing the alkali on the surface of an aluminum hydroxide filter cake, and flows into the closed container along with the slurry.
In the scheme of the invention, a triangular area 11 is further arranged between the blanking auger 21 and the distributor 24, the triangular area 11 is composed of first scraping plates 22 and back blowing air 23 on two sides, no vacuum and no negative pressure are ensured in the triangular area 11, material dust can be avoided, the angle between the first scraping plates 22 and the back blowing air 23 is 30-45 degrees, the first scraping plates 22 can scrape materials to prevent the materials from being accumulated, and in addition, the triangular area formed by the first scraping plates 22 and the back blowing air 23 is a vacuum area, namely a dead area without blowing air, so that the materials on the flat plate body 1 can be more smooth and stable.
Furthermore, a second scraper 25 and a third scraper 28 are respectively arranged on two sides of the washing pipeline 26, a plurality of flushing pipes 27 are uniformly arranged below the washing pipeline 26 along the length direction of the washing pipeline, a washing area is formed between the second scraper 25 and the third scraper 28, and the temperature of washing water in the washing pipeline 26 is 90-100 ℃.
In this embodiment, a cleaning pipe is disposed between the second scraper 25 and the distributor 24, the cleaning pipe and the cleaning pipe 26 have the same structure, and baffles are disposed on both sides of the cleaning pipe and the cleaning pipe, and the baffles contact the surface of the material, that is, scrapers are disposed on both sides of the cleaning pipe and the cleaning pipe 26, so as to stop water and prevent the liquid in the cleaning area from flowing to other areas; and further washing off the alkali on the surface of the aluminum hydroxide.
In the scheme of the invention, a support 33 is arranged between the closed container 3 and the flat disc body 1, the filter disc 13 is arranged on the support 33, wherein the filter disc 13 is composed of a plurality of filter plates 131 with the same size, and the size of the filter holes on the filter plates 131 is adjustable, namely, the size of the filter holes can be adjusted according to the material specification, so that the product quality is improved. The filter plates 131 comprise a lower filter plate 1311 and an upper filter plate 1312, the lower filter plate 1311 is fixed on the bracket 33, the surface of the lower filter plate 1311 is provided with arc-shaped slide rails 1313, the bottom surface of the upper filter plate 1312 is provided with rollers matched with the arc-shaped slide rails 1313, the upper filter plate 1312 is matched with the arc-shaped slide rails 1313 through the rollers to rotate on the lower filter plate 1311, when the lower filter plate 1311 and the upper filter plate 1312 are overlapped, filter holes on the lower filter plate 1311 correspond to filter holes on the upper filter plate 1312, when the upper filter plate 1312 rotates on the lower filter plate 1311, the filter holes on the lower filter plate 1311 are staggered with the filter holes on the upper filter plate, and after the upper filter plate 1312 rotates on the lower filter plate 1311, the filter holes are staggered, and the inner diameters of the staggered filter holes become small, so that the filter efficiency can be further improved. When the filter plates 13 are opened (the upper filter plates 1312 rotate on the lower filter plates 1311), every two adjacent upper filter plates 1312 are in contact with each other, the flat disc body 1 is fully paved at the moment, when the filter plates 13 are not opened, a gap is reserved between every two adjacent filter plates 13, a filter screen 12 is arranged above the filter plates 13, and the filter screens 12 and the filter plates 13 are matched for filtering; when the size of the filter holes needs to be adjusted, the filter screen is firstly discarded, and then the upper filter plate 1312 is moved one by one.
The invention also comprises a filtering method of the flat disc filter, which comprises the following steps: (1) Connecting the closed container with a vacuum pump through a communicating pipe, and sealing the discharge hole; (2) Conveying the material to be filtered into the flat disc body by a blanking auger; (3) The flat disc body is driven to enable the materials to sequentially enter a triangular area, a material distribution area and a washing area; (4) Driving a vacuum pump to generate negative pressure in the closed container, so that the slurry can conveniently fall into the closed container through the filter screen and the filter plate; (5) The filtered slurry falls into a closed container to complete filtration, and a discharge port is opened to collect the slurry.
Based on the above filtration method, the washing zone in step (3) comprises a first washing and a second washing, the first washing is washing by weak filtrate in the cleaning pipe, the second washing is washing by hot water in the washing pipe 26, wherein the weak filtrate is liquid after the second washing, that is, the first washing is washing liquid after the second washing, which not only can save energy, but also can improve the efficiency of alkali removal, and further improve the product quality after filtration.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The utility model provides a flat-disk filter, includes the outside rotatable flat-disk body of base member and base member, its characterized in that, be equipped with unloading auger, distributing device and washing pipeline way around the base member, the surface of flat-disk body is equipped with the filter screen, and filter screen detachable establishes on the filter disc of below, the below of flat-disk body is equipped with conical airtight container, airtight container is last to be equipped with discharge gate and communicating pipe.
2. The flat disc filter according to claim 1, wherein a triangular area is further arranged between the blanking auger and the distributor, the triangular area is formed by the first scraping plates on two sides and the reverse blow, and the angle between the first scraping plates and the reverse blow is 30-45 degrees.
3. The flat disc filter according to claim 2, wherein a second scraper and a third scraper are respectively provided at both sides of the washing pipe, a plurality of washing pipes are uniformly provided below the washing pipe along the length direction thereof, a washing zone is formed between the second scraper and the third scraper, and the temperature of the washing water in the washing pipe is 90-100 ℃.
4. The flat-disc filter according to claim 1, wherein a support is provided between the closed vessel and the flat-disc body, and the filter disc is provided on the support, wherein the filter disc is composed of a plurality of filter plates having the same size, and the size of the filter holes on the filter plates is adjustable.
5. The flat disc filter according to claim 4, wherein the filter plates comprise a lower filter plate and an upper filter plate, the lower filter plate is fixed on the support, the surface of the lower filter plate is provided with arc-shaped slide rails, the bottom surface of the upper filter plate is provided with rollers which are matched with the arc-shaped slide rails, the upper filter plate is matched with the arc-shaped slide rails through the rollers to rotate on the lower filter plate, when the lower filter plate and the upper filter plate are coincided, the filter holes on the lower filter plate correspond to the filter holes on the upper filter plate, and when the upper filter plate rotates on the lower filter plate, the filter holes on the lower filter plate are staggered with the filter holes on the upper filter plate.
6. A flat disc filter according to claim 4, wherein each two adjacent upper filter plates are in contact when the filter plates are open.
7. A method of filtering in a flat disc filter according to any one of claims 1 to 5, comprising the steps of: (1) Connecting the closed container with a vacuum pump through a communicating pipe, and simultaneously sealing the discharge hole; (2) Conveying the material to be filtered into the flat disc body through a blanking auger; (3) The flat disc body is driven to enable the materials to sequentially enter a triangular area, a material distribution area and a washing area; (4) driving a vacuum pump to generate negative pressure in the closed container; (5) The filtered slurry falls into a closed container to complete filtration, and a discharge port is opened to collect the slurry.
8. The flat disc filter filtering method according to claim 6, wherein the washing zone in step (3) comprises a first washing and a second washing, the first washing is by washing with weak filtrate, the second washing is by washing with hot water, wherein the weak filtrate is liquid after the second washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012641.XA CN115253457A (en) | 2022-08-23 | 2022-08-23 | Flat disc filter and filtering method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012641.XA CN115253457A (en) | 2022-08-23 | 2022-08-23 | Flat disc filter and filtering method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115253457A true CN115253457A (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211012641.XA Pending CN115253457A (en) | 2022-08-23 | 2022-08-23 | Flat disc filter and filtering method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115253457A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB136309A (en) * | 1918-12-30 | 1919-12-18 | Albert Edgar Alexander | Improvements in and relating to Continuous Vacuum Filters. |
| WO1990010490A1 (en) * | 1989-03-13 | 1990-09-20 | Hedemora Ab | Filter for continuous filtration |
| CN1390618A (en) * | 2001-06-12 | 2003-01-15 | 平果铝业公司 | Methd for improving filtrate distributing tray of horizontal disk filter |
| CN204307436U (en) * | 2014-11-03 | 2015-05-06 | 信发科技开发有限公司 | A kind of square position wash mill |
| CN108176118A (en) * | 2018-02-26 | 2018-06-19 | 无锡华盛橡胶新材料科技股份有限公司 | For the vacuum filter of insoluble sulfur separation of solid and liquid |
| CN110560365A (en) * | 2019-07-29 | 2019-12-13 | 重庆神斧锦泰化工有限公司 | Filter is used in production of environmental protection safety explosive |
| CN211887923U (en) * | 2019-12-23 | 2020-11-10 | 南通市滤神环保净化材料有限公司 | Metal photocatalyst active carbon filter screen |
| CN112371069A (en) * | 2020-10-23 | 2021-02-19 | 无锡市张华医药设备有限公司 | Continuous reaction, crystallization, filtration, washing, drying system |
| CN215434915U (en) * | 2021-02-26 | 2022-01-07 | 江苏国新金属制品有限公司 | Feeding device for production of dust collector pipe |
| CN114130106A (en) * | 2021-11-30 | 2022-03-04 | 龙佰襄阳钛业有限公司 | Vacuum rotary table filter and filtering process |
-
2022
- 2022-08-23 CN CN202211012641.XA patent/CN115253457A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB136309A (en) * | 1918-12-30 | 1919-12-18 | Albert Edgar Alexander | Improvements in and relating to Continuous Vacuum Filters. |
| WO1990010490A1 (en) * | 1989-03-13 | 1990-09-20 | Hedemora Ab | Filter for continuous filtration |
| CN1390618A (en) * | 2001-06-12 | 2003-01-15 | 平果铝业公司 | Methd for improving filtrate distributing tray of horizontal disk filter |
| CN204307436U (en) * | 2014-11-03 | 2015-05-06 | 信发科技开发有限公司 | A kind of square position wash mill |
| CN108176118A (en) * | 2018-02-26 | 2018-06-19 | 无锡华盛橡胶新材料科技股份有限公司 | For the vacuum filter of insoluble sulfur separation of solid and liquid |
| CN110560365A (en) * | 2019-07-29 | 2019-12-13 | 重庆神斧锦泰化工有限公司 | Filter is used in production of environmental protection safety explosive |
| CN211887923U (en) * | 2019-12-23 | 2020-11-10 | 南通市滤神环保净化材料有限公司 | Metal photocatalyst active carbon filter screen |
| CN112371069A (en) * | 2020-10-23 | 2021-02-19 | 无锡市张华医药设备有限公司 | Continuous reaction, crystallization, filtration, washing, drying system |
| CN215434915U (en) * | 2021-02-26 | 2022-01-07 | 江苏国新金属制品有限公司 | Feeding device for production of dust collector pipe |
| CN114130106A (en) * | 2021-11-30 | 2022-03-04 | 龙佰襄阳钛业有限公司 | Vacuum rotary table filter and filtering process |
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