CN212731313U - Flat-disc filter - Google Patents
Flat-disc filter Download PDFInfo
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- CN212731313U CN212731313U CN202020971515.7U CN202020971515U CN212731313U CN 212731313 U CN212731313 U CN 212731313U CN 202020971515 U CN202020971515 U CN 202020971515U CN 212731313 U CN212731313 U CN 212731313U
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Abstract
The utility model discloses a flat disc filter, which comprises a central upright post, wherein a central platform is arranged on the central upright post, a distribution mechanism is arranged below the central platform, a flat disc assembly is arranged around the central platform and is connected with a driving assembly, and the driving assembly drives the flat disc assembly to rotate around the central platform; the pan assembly comprises: an annular filter disc; a spiral discharge mechanism; the two baffle plates are arranged close to the feeding surface of the screw rod; the filtrate distributor is used for feeding and is positioned in the distribution area of the annular filter disc; and each washing liquid distributor comprises a liquid inlet pipe and a water tank, a liquid outlet of the liquid inlet pipe extends towards the bottom of the water tank, an overflow plate body of the water tank is lower than plate bodies on other side surfaces, an overflow groove is arranged at the overflow plate, and an inclined water guide plate is arranged at the groove edge of the overflow groove. The flat disc filter of the utility model has high output and long service life of the filter cloth.
Description
Technical Field
The utility model relates to the field of equipment for producing aluminum oxide, in particular to a flat disc filter.
Background
The flat disc filter is a key device in the production process of aluminum oxide, and is mainly used for filtering and separating aluminum hydroxide in a sodium aluminate solution, thereby reducing the water content and the floating alkali content of the aluminum hydroxide and improving the performance quality of the aluminum hydroxide. The flat disc filter is provided with a feeding area, a vacuum area, a washing area and a discharging area, solid-liquid separation is carried out by utilizing a vacuum suction filtration mode, then particles at the separation position are washed, scraped and conveyed, and then the next circulation is carried out.
However, the existing flat disc filter has the problem that the residual filter cake is thicker (5-8cm) after unloading, which causes low product yield; when the filter cloth is regenerated in the back blowing area, the back blowing effect of compressed air is influenced, and water and floating alkali are not easy to seep down, so that the quality of aluminum hydroxide is influenced. In the actual production process, the residual material layer can be remained after the filter cloth is unloaded, and simultaneously, because the filter cloth can remain scabs after being used for multiple times of filtering, under the action of vacuum, particles in the slurry can block filter holes of the filter cloth, so that the filtering effect of the filter cloth is influenced.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flat disc filter to overcome the shortcoming that output is low, filter cloth reuse rate is low.
In order to achieve the above object, the utility model provides a flat disc filter, which comprises a central upright post, wherein a central platform is arranged on the central upright post, a distribution mechanism is arranged below the central platform, a flat disc assembly is arranged around the central platform, the flat disc assembly is connected with a driving assembly, and the driving assembly drives the flat disc assembly to rotate around the central platform; the pan assembly comprises: the annular filter disc comprises a discharging area, a back blowing area, a material distribution area, a mother liquor filtering area, a strong filtrate filtering area, a weak filtering area and a washing water filtering area; the spiral unloading mechanism comprises a spiral rod and a slag receiving hopper, the slag receiving hopper is positioned below the discharge end of the spiral rod, one end of the spiral rod is connected with a driving motor, the other end of the spiral rod is arranged on a supporting seat of the central platform, an upper baffle is arranged above the spiral rod, a scraping plate is fixedly arranged on the upper baffle, the scraping plate is arranged along the axial direction of the spiral rod and positioned on the rear side surface of the spiral rod, the middle lower part of the scraping plate is of an arc structure, and the distance between the lower end surface of the scraping plate and the filter cloth on the annular filter disc is smaller than the distance between the lower end surface of the spiral rod and the filter cloth on the annular filter disc; the two baffle plates are arranged close to the feeding surface of the spiral rod and respectively arranged at the inner edge and the outer edge of the annular filter disc, and each baffle plate is provided with an arc-shaped scraper which extends into the annular filter disc; the filtrate distributor is used for feeding and is positioned in the distribution area of the annular filter disc; and each washing liquid distributor comprises a liquid inlet pipe and a water tank, a liquid outlet of the liquid inlet pipe extends towards the bottom of the water tank, an overflow plate body of the water tank is lower than plate bodies on other side surfaces, an overflow groove is arranged at the overflow plate, and an inclined water guide plate is arranged at the groove edge of the overflow groove.
Preferably, in the above technical scheme, the baffle both sides are equipped with the mounting panel, be equipped with a plurality of connecting holes on the vertical direction of mounting panel, the scraper passes through the connecting hole with the baffle detachable is connected.
Preferably, in the above technical scheme, a regeneration flushing pipe is arranged at the tail end of the back blowing zone, and the regeneration flushing pipe is communicated with a washing water pipe arranged in the washing water filtering zone.
Preferably, in the above technical solution, the regeneration flushing pipe is provided with a plurality of venturi nozzles.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses flat-disc filter scrapes the flitch at the rear side of hob, and the hob is unloading the back in the district, and remaining clout layer is scraped by the flitch of scraping of rear side, and the material is carried out by the hob. The residual material layer on the filter cloth can be reduced by scraping through the scraping plate. A gap is formed between the scraping plate and the filter cloth, so that the surface of the filter cloth can not be directly scraped in the scraping process, and the filter cloth is not damaged. The residual material layer on the filter cloth is thin, so that the filter cloth can be cleaned relatively cleanly when the filter cloth is processed in the back blowing area, and the service life of the filter cloth is prolonged.
(2) The baffle plates are arranged on the two sides of the feeding surface of the screw rod, so that the materials can be prevented from splashing around during transportation. The arc scraper that extends to annular filter disc in the below of baffle, the arc scraper is not hard up to the edge of material in advance shovels on the annular filter disc, helps clearing up the dead angle, can comparatively thorough transport away the material simultaneously.
(3) The utility model discloses be equipped with the regeneration flushing pipe at the end in blowback district, wash the filter cloth after the blowback district is handled, can wash away remaining tiny granules such as scar in the filter cloth, prolong the life of filter cloth.
Drawings
Figure 1 is a schematic structural view of a flat disc filter according to the present invention.
FIG. 2 is a schematic view of the structure of a ring-shaped filter disc in a flat disc filter according to the present invention;
FIG. 3 is a schematic structural view of a spiral discharging structure in a flat disc filter according to the present invention;
FIG. 4 is a schematic structural view of a washing liquid distributor in a flat disc filter according to the present invention;
FIG. 5 is a schematic structural view of a baffle plate in a flat disc filter according to the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 5, the flat disc filter according to the embodiment of the present invention comprises a central upright 1, a central platform 2 is disposed on the central upright 1, and a distribution mechanism 3 is disposed below the central platform and used for distributing the filtrate. The periphery of the central platform 2 is provided with a flat disc assembly in a surrounding mode, the flat disc assembly is connected with a driving assembly 4, and the flat disc assembly is driven to rotate around the central platform 2 through the driving assembly 4.
The flat disc assembly comprises an annular filter disc 5, and the annular filter disc 5 is divided into a discharging area A, a back blowing area B, a distributing area C, a mother liquid filtering area D, a strong filtrate filtering area E, a weak filtering area F and a washing water filtering area G. The spiral discharging mechanism 6 is arranged on the annular filter disc 5 and is positioned at the discharging area A. The spiral discharging mechanism 6 comprises a spiral rod 61 and a slag receiving hopper 62, wherein the slag receiving hopper 62 is positioned below the discharging end of the spiral rod 61 and is used for collecting materials conveyed by the spiral rod 61. One end of the screw rod 61 is connected with the driving motor 63, the other end of the screw rod is arranged on the supporting seat of the central platform 2, the screw rod 61 is driven to rotate by the driving motor 63, the screw rod 61 rotates, materials in the discharging area on the annular filter disc 5 are conveyed out of the filter disc 5, and the materials drop into the slag receiving hopper 62. An upper baffle plate 64 is arranged above the screw rod 61, certain dust can be stirred up by the screw rod 61 in the process of unloading and transporting materials, and the upper baffle plate 64 is arranged to prevent the dust from flying. The upper baffle plate 64 is fixedly provided with a scraping plate 65, and the scraping plate 65 is arranged along the axial direction of the screw rod 61 and is positioned on the rear side surface of the screw rod 61. The middle lower part of the scraping plate 65 is of an arc structure, and the distance from the lower end face of the scraping plate 65 to the filter cloth on the annular filter disc 5 is smaller than the distance from the lower section of the screw rod 61 to the filter cloth on the annular filter disc. Preferably, the distance from the lower end surface of the scraper plate 65 to the filter cloth is 2-3 cm. In operation, after the screw 61 is discharged in the discharge area, the remaining residual material layer is scraped by the rear scraper 65, and the material is conveyed out by the screw 61. The residual material layer on the filter cloth can be reduced by scraping through the scraping plate 65. A gap is formed between the scraping plate and the filter cloth, so that the surface of the filter cloth can not be directly scraped in the scraping process, and the filter cloth is not damaged. The residual material layer on the filter cloth is thin, so that the filter cloth can be cleaned relatively cleanly when the filter cloth is processed in the back blowing area, and the service life of the filter cloth is prolonged.
Two baffles 7 are arranged in front of the feeding surface of the screw rod 61 and close to the screw rod 61, a baffle 71 is arranged at the inner edge of the annular filter disc 5, and a baffle 72 is arranged at the outer edge of the annular filter disc 5. The baffle 71 and the baffle 72 have the same structure. Taking the baffle 71 as an example, the baffle 71 is provided with an arc-shaped scraper 73, and the scraper 73 extends into the annular filter disc 5. The baffle plates are arranged on the two sides of the feeding surface of the screw rod, so that the materials can be prevented from splashing around during transportation. The arc scraper that extends to annular filter disc in the below of baffle, the arc scraper is not hard up to the edge of material in advance shovels on the annular filter disc, helps clearing up the dead angle, can comparatively thorough transport away the material simultaneously.
A filtrate distributor 10 is arranged above the distributing area of the annular filter disc 5, and the material to be processed enters the annular filter disc 5 through a filtrate distributor 7 to be filtered. The strong filtrate filtering area E, the weak filtrate filtering area F and the washing water filtering area G on the annular filter disc 5 are respectively provided with a liftable washing liquid distributor 8, the washing liquid distributor 8 comprises a liquid inlet pipe 81 and a water tank 82, a liquid outlet of the liquid inlet pipe 81 extends to the bottom of the tank, the water tank 82 is provided with an overflow plate 821, the upper end part of the plate body of the overflow plate 821 is lower than the upper end parts of other side panel bodies, the outer wall of the overflow plate 821 is provided with an overflow groove 83, and the groove edge of the overflow groove 83 is provided with an inclined water guide plate 84. The lotion distributing device adopts the intaking of overflow, and rivers are comparatively releived steady equilibrium, and rivers can not erode the filter cake surface to form the impact dent as for the filter cake surface, it is better to the washing effect of filter cake. The liquid inlet pipe 81 extends towards the bottom of the water tank 82, and the liquid outlet directly scours the bottom of the tank during feeding, so that a certain scouring effect is achieved on the bottom of the tank, and materials are prevented from being deposited on the bottom of the tank.
Preferably, mounting plates 74 are arranged on two sides of the baffle 71, a plurality of connecting holes 75 are arranged in the vertical direction of the mounting plates 74, and the scraper 73 is detachably and fixedly connected with the baffle 71 through a connecting piece. The connecting piece is a screw. During installation, the scraper 73 and the baffle 71 can be fixedly connected by screwing the screw through the connecting hole 75. When the distance between the bottom end of the scraper 73 and the filter cloth needs to be adjusted, the fixing position of the scraper 73 and the baffle connecting hole 75 can be adjusted.
Preferably, the end of the back blowing area B on the annular filter disc 5 is provided with a regeneration flushing pipe 9, and the regeneration flushing pipe 9 is communicated with a washing water pipe arranged in the washing water filtering area G. A water inlet pipe (not shown) is in communication with the regeneration wash pipe 9 and the wash pipe. When the filter cloth needs to be washed, the washing water pipe is closed, the switch of the regeneration washing pipe 9 is opened, and the filter cloth can be washed through the regeneration washing pipe 9. The filter cloth processed by the back blowing area is washed, so that residual scabs and other fine particles in the filter cloth can be washed out, and the service life of the filter cloth is prolonged.
Preferably, the regeneration flushing pipe 9 is provided with a plurality of venturi nozzles. Through setting up a plurality of venturi shower nozzles, during washing, can produce certain impulsive force to the filter cloth, improve the washing efficiency.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. A flat disc filter comprises a central upright post, wherein a central platform is arranged on the central upright post, a distribution mechanism is arranged below the central platform, a flat disc assembly is arranged around the central platform and connected with a driving assembly, and the driving assembly drives the flat disc assembly to rotate around the central platform; characterized in that, the plate assembly includes:
the annular filter disc comprises a discharging area, a back blowing area, a material distribution area, a mother liquor filtering area, a strong filtrate filtering area, a weak filtering area and a washing water filtering area;
the spiral unloading mechanism comprises a spiral rod and a slag receiving hopper, the slag receiving hopper is positioned below the discharge end of the spiral rod, one end of the spiral rod is connected with a driving motor, the other end of the spiral rod is arranged on a supporting seat of the central platform, an upper baffle is arranged above the spiral rod, a scraping plate is fixedly arranged on the upper baffle, the scraping plate is arranged along the axial direction of the spiral rod and positioned on the rear side surface of the spiral rod, the middle lower part of the scraping plate is of an arc structure, and the distance between the lower end surface of the scraping plate and the filter cloth on the annular filter disc is smaller than the distance between the lower end surface of the spiral rod and the filter cloth on the annular filter disc;
the two baffle plates are arranged close to the feeding surface of the spiral rod and respectively arranged at the inner edge and the outer edge of the annular filter disc, and each baffle plate is provided with an arc-shaped scraper which extends into the annular filter disc;
the filtrate distributor is used for feeding and is positioned in the distribution area of the annular filter disc; and
the washing liquid distributor comprises a plurality of washing liquid distributors, each washing liquid distributor comprises a liquid inlet pipe and a water tank, a liquid outlet of the liquid inlet pipe extends towards the bottom of the water tank, an overflow plate body of the water tank is lower than plate bodies on other side surfaces, an overflow groove is arranged at the overflow plate, and an inclined water guide plate is arranged at the groove edge of the overflow groove.
2. The flat disc filter according to claim 1, wherein mounting plates are provided on both sides of the baffle, a plurality of connecting holes are provided in the mounting plates in the vertical direction, and the scraper is detachably connected to the baffle by passing through the connecting holes through connecting members.
3. The flat-disc filter according to claim 1, wherein the end of the back-blowing zone is provided with a regeneration flushing pipe, and the regeneration flushing pipe is communicated with a washing water pipe arranged in the washing water filtering zone.
4. The flat disc filter according to claim 3, wherein the regeneration flushing pipe is provided with a plurality of venturi nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971515.7U CN212731313U (en) | 2020-06-01 | 2020-06-01 | Flat-disc filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971515.7U CN212731313U (en) | 2020-06-01 | 2020-06-01 | Flat-disc filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212731313U true CN212731313U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020971515.7U Active CN212731313U (en) | 2020-06-01 | 2020-06-01 | Flat-disc filter |
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| Country | Link |
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| CN (1) | CN212731313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304541A (en) * | 2021-04-28 | 2021-08-27 | 朱雯 | Cosmetic extracting solution processing device with residue filtering function |
| CN115054978A (en) * | 2022-08-11 | 2022-09-16 | 江苏新宏大集团有限公司 | Filter is used in phosphoric acid production |
-
2020
- 2020-06-01 CN CN202020971515.7U patent/CN212731313U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304541A (en) * | 2021-04-28 | 2021-08-27 | 朱雯 | Cosmetic extracting solution processing device with residue filtering function |
| CN115054978A (en) * | 2022-08-11 | 2022-09-16 | 江苏新宏大集团有限公司 | Filter is used in phosphoric acid production |
| CN115054978B (en) * | 2022-08-11 | 2022-10-25 | 江苏新宏大集团有限公司 | Filter is used in phosphoric acid production |
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