CN114653127B - Self-adjusting scraper device for vacuum disc filter - Google Patents
Self-adjusting scraper device for vacuum disc filter Download PDFInfo
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- CN114653127B CN114653127B CN202210184831.3A CN202210184831A CN114653127B CN 114653127 B CN114653127 B CN 114653127B CN 202210184831 A CN202210184831 A CN 202210184831A CN 114653127 B CN114653127 B CN 114653127B
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- Prior art keywords
- scraper
- scraper blade
- filter
- slurry tank
- roller
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- 239000004744 fabric Substances 0.000 claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 17
- 239000012065 filter cake Substances 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—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
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
-
- 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
-
- 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
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
A self-adjusting scraper device of a distribution head of a vacuum disc filter can aim at different material properties, one end of a scraper blade is connected with a first supporting shaft of a roller, the roller is clamped on a roller track on a guide rail of a sector plate fixing device, and a universal joint ball head on a second supporting shaft at the other end is fixed on a slurry tank side plate through a ball head seat. The guide rail of the sector plate is clamped at the top of the sector plate provided with the filter cloth, the guide rail can synchronously swing along with the deflection of the sector plate, and the roller track on the guide rail synchronously swings along with the guide rail. The roller rails can drive the scraper to synchronously swing along with the swing of the sector plates, so that the distance between the scraper blade and the filter cloth is kept relatively unchanged all the time, the thickness of the residual filter cake on the filter cloth after the scraper is scraped is unchanged, and the scraper blade can always scrape and remove all the residual filter cakes. The method can control the productivity and the water content to meet the requirements aiming at the thickness change of filter cakes caused by different material properties.
Description
The technical field is as follows:
the invention belongs to the technical field of vacuum disc type filters, and particularly relates to a self-adjusting scraper device of a vacuum disc type filter.
The background art comprises the following steps:
the vacuum disc type filter is widely applied to the filtration and separation of solid particles with different material properties, such as concentrate, tailings and the like in the power industry and the mine industry.
The vacuum disc filter uses filter cloth as a filter medium, a plurality of sector plates provided with the filter cloth are arranged on a central shaft, and the excircle of the sector plate is provided with a guide rail device for fixing the sector plate to form a filter disc. The filter disc runs slowly in the slurry tank, and the solid particles form a filter cake on the filter cloth under the action of vacuum negative pressure. And (3) absorbing the filter cake, then conveying the filter cake to a discharge bin, finishing discharging by a scraper and blowing assistance, and discharging the solid particles from the filter cloth to realize solid-liquid separation of the material.
Traditional vacuum disc filter's scraper discharge apparatus comprises scraper seat and scraper blade of fixing at the thick liquid groove, the scraper seat welds in advance on the thick liquid groove curb plate, the scraper blade passes through the bolt fastening according to certain angle on scraping the blade seat, there is the tight bolt in top in the bottom of scraper blade, a distance for adjusting scraper blade and filter cloth, through the operation debugging, fix the scraper blade in a position, in order to prevent to scrape broken filter cloth and guarantee the productivity, need strictly guarantee the distance between filter cloth and the scraper blade.
Different mines and thermal power plants can cause different material densities and particle sizes due to the difference of raw ore and production process system control, and the thickness of a filter cake can be continuously changed. Adopt original fixed scraper device, because the scraper is fixed, when filter cake thickness is uneven or thickness variation is great, can appear unable scraping and scrape the less condition of material volume, cause the unstability of the important index productivity and the moisture content of vacuum disk filter, further influence whole process systems's production.
In addition, when the filter disc is seriously deflected, one side of the fan-shaped plate is far away from the scraper, the scraper cannot scrape materials, and the other side of the fan-shaped plate is very close to the scraper and even tightly clings to the scraper, so that the filter cloth is easily scraped or the fan-shaped plate is damaged, and serious consequences are caused. If the filter cake is difficult to remove for a long time, the filter cloth can be blocked, the service life of the filter cloth is seriously shortened, the filter cloth is frequently replaced, and the use cost is increased. Therefore, the machine needs to be stopped periodically according to the change of the material property to adjust the distance between the scraper blade and the filter cloth. Because the technical bottleneck of original fixed scraper causes the productivity unstable, can lead to the thick liquid groove liquid level to be difficult to control, easily appears the liquid level overflow or the liquid level is low excessively, influences the production of back process system.
The invention content is as follows:
in order to overcome the defects, the invention provides a self-adjusting scraper device of a vacuum disc type filter.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a self-adjusting scraper assembly for a vacuum disc filter dispensing head comprising:
the slurry tank side plates are positioned in the slurry tank of the filter and distributed on two sides of the filter disc;
the scraper structure sets up on the thick liquids groove curb plate, include:
the fixing plate is fixed with the slurry tank side plate through a bolt assembly;
a doctor blade;
the hinge is used for connecting the fixing plate and the scraper blade;
the scraper limiting structure is arranged on the slurry tank side plate and used for limiting the scraper blade; and the number of the first and second groups,
scraper is from pendulum structure includes:
the first support shaft is arranged at one end of the scraper blade, one end of the first support shaft extends out of the scraper blade and is provided with a roller, and the roller is clamped on a roller track on a guide rail of the sector plate fixing device;
the second support shaft is arranged at the other end of the scraper blade, one end of the second support shaft extends out of the scraper blade and is provided with a universal joint ball head, and the universal joint ball head is fixed on the slurry tank side plate through a ball head support and a support fixing frame;
the roller tracks synchronously deflect along with deflection of the sector plates, the scraper blade is driven by the first supporting shaft to synchronously deflect along with the sector plates, and the distance between the scraper blade and the filter cloth is kept relatively unchanged.
Scraper limit structure includes:
the limiting blocks are of wedge-shaped structures and are distributed on the side plate of the slurry tank at intervals;
spacing subassembly of bolt includes:
the limiting bolt fixing frame is arranged on the slurry tank side plate;
the limiting bolt is arranged on the limiting bolt fixing frame, and the swinging range of the scraper blade can be adjusted by screwing the limiting bolt.
Due to the adoption of the technical scheme, the invention has the following advantages:
a self-adjusting scraper device of a distribution head of a vacuum disc filter can aim at different material properties, one end of a scraper blade is connected with a first supporting shaft of a roller, the roller is clamped on a roller track on a guide rail of a sector plate fixing device, and a universal joint ball head on a second supporting shaft at the other end is fixed on a slurry tank side plate through a ball head seat. The guide rail of the sector plate is clamped at the top of the sector plate provided with the filter cloth, the guide rail can synchronously swing along with the swing of the sector plate, and the roller rail on the guide rail synchronously swings along with the guide rail. The roller rails can drive the scraper to synchronously swing along with the swing of the sector plates, so that the distance between the scraper blade and the filter cloth is kept relatively unchanged all the time, the thickness of the residual filter cake on the filter cloth after the scraper is scraped is unchanged, and the scraper blade can always scrape and remove all the residual filter cakes. The production capacity and the water content can be controlled to meet the requirements aiming at the thickness change of filter cakes caused by different material properties.
Description of the drawings:
FIG. 1 is a schematic view of the final assembly of the present invention;
FIG. 2 isbase:Sub>A schematic view of the structure of FIG. 1 taken along line A-A;
FIG. 3 is a schematic view of the cross-sectional structure B-B of FIG. 2;
in the figure: the scraper comprises a scraper blade 1, a limiting bolt 2, a hinge 3, a limiting bolt fixing frame 4, filter cloth 5, a roller track 6, a roller 7, a limiting block 8, a bolt assembly 9, a fixing plate 10, a first supporting shaft 11, a second supporting shaft 12, a universal joint ball head 13, a ball head support 14, a support fixing frame 15 and a slurry tank side plate 16.
The specific implementation mode is as follows:
the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the present invention is usually placed in when used, it is merely for convenience of description and simplification of the description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.
A self-adjusting scraper assembly for a vacuum disc filter dispensing head, substantially as described herein with reference to the accompanying drawings, comprising: the device comprises a slurry tank side plate 16, a scraper structure, a scraper limiting structure and a scraper self-swinging structure;
the slurry tank side plate 16 is positioned in a slurry tank of the filter and is distributed on two sides of the filter disc;
the scraper structure sets up on the thick liquids groove curb plate 16 specifically includes: the scraper comprises a fixing plate 10 and a scraper blade 1, wherein the fixing plate 10 is fixed with a slurry tank side plate 16 through a bolt assembly 9, the fixing plate 10 is connected with the scraper blade 1 through a hinge 3, the scraper blade 1 can swing on the fixing plate 10 under the action of the hinge 3, and then the distance between the cutter point of the scraper blade 1 and filter disc filter cloth 5 is changed as required;
the scraper limiting structure is arranged on the slurry tank side plate 16 and used for limiting the scraper blade 1;
the scraper is from pendulum structure includes:
first supporting shaft 11 sets up the one end of scraper blade 1, the one end of first supporting shaft 11 is extended scraper blade 1, and has gyro wheel 7, gyro wheel 7 dress card is on the gyro wheel track 6 on the sector plate fixing device guide rail, so, gyro wheel track 6 is along with the beat of sector plate and synchronous beat, and then by the one end that first supporting shaft 11 drove scraper blade 1 is along with the synchronous beat of sector plate.
The second support shaft 12 is arranged at the other end of the scraper blade 1, one end of the second support shaft 12 extends out of the scraper blade 1 and is provided with a universal joint ball head 13, and the universal joint ball head 13 is fixed on the slurry tank side plate 16 through a ball head support 14 and a support fixing frame 15; when the end of the first support shaft 11 on the scraper blade 1 swings, the scraper blade 1 can drive the second support shaft 12 to swing, and the end of the second support shaft 12 is a universal joint ball head 13 and can turn, so that the scraper blade 1 at the end can swing along with the swing of the first support shaft 11 completely, the universal joint ball head 13 provides a pivot capable of rotating towards all directions for the end of the scraper blade 1, the scraper blade 1 can swing along with a filter disc completely, and therefore the distance between the whole scraper blade 1 and the filter disc and the distance between the filter cloth 5 are kept relatively unchanged, and the purpose of self adjustment is achieved.
As shown in fig. 2 and 3, the scraper limiting structure includes: a plurality of stop blocks 8 and bolt stop assemblies;
the limiting blocks 8 are of wedge-shaped structures and are distributed on the slurry tank side plates 16 at intervals, as shown in fig. 3, the longitudinal sections of the limiting blocks 8 are right-angled trapezoids, trapezoidal inclined surfaces are arranged opposite to the scraper blade 1, and the trapezoidal inclined surfaces of the limiting blocks 8 determine the lower swing limit of the scraper blade 1;
the spacing subassembly of bolt includes: the limiting bolt fixing frame 4 and the limiting bolt 2 are arranged on the slurry tank side plate 16; spacing bolt 2 sets up on the spacing bolt mount 16, spacing bolt 2 has decided the swing upper limit of scraper blade 1, through revolving soon spacing bolt 2 can adjust the hunting range of scraper blade 1.
The swing range of the scraper blade 1 is limited by the limiting block 8 and the limiting bolt 2, so that the swing range of the scraper blade 1 can be limited, and the scraper blade 1 can automatically swing along with the fan-shaped white, and due to the fact that the force action is mutual, the scraper structure can further correct a filter disc, the filter disc is prevented from being deflected too much, and a slurry tank is scraped by a scraper to cause accidental parking or even damage to the filter disc.
The scraper structures on the two sides of the sector plate always synchronously deflect along with the guide rail of the sector plate, the distance between the scraper blade 1 and the filter cloth 5 is always stable and unchanged, and the problems that the scraper on one side of the sector plate cannot scrape materials and the scraper on one side breaks the filter cloth 5 can be solved.
For materials which are low in concentration and extremely fine in granularity and difficult to filter, a filter cake is thin, and in order to guarantee the productivity, the thickness of the filter cake which can be scraped by the scraper blade 1 needs to be strictly controlled for the vacuum disc type filter. According to the design, the limiting bolt 2 is adjusted according to actual needs, after the distance between the scraper blade 1 and the filter cloth 5 reaches the requirement, the relative distance between the scraper blade 1 and the filter cloth 5 is always stable and unchanged, the thickness of the scraped filter cake is ensured, stable filtering performance is obtained, the thickness of the residual filter cake on the filter cloth 5 is ensured, the vacuum degree of an equipment system is stabilized, and the filter cloth is prevented from being scraped.
When material thick liquid quality is stable, if the thick liquid groove overflow, scraper 1 is pushed down to spacing bolt 2 in the 1 outside of accessible scraper, reduces the distance of scraper point and filter cloth 5, increases the filter cake thickness of scraping down to the increase productivity is with stabilizing thick liquid groove liquid level, guaranteeing process systems's behind stability.
When material thick liquid steady quality, the productivity satisfies under the condition, if the thick liquid groove liquid level is crossed lowly, leads to equipment vacuum to reduce, and when filter cake moisture was on the high side, spacing bolt 2 was loosened soon to the accessible, and the increase scraper point and the distance of filter cloth 5 reduce the thickness of scraping the filter cake down, guarantee vacuum to reach the moisture content requirement.
For the mining super-large vacuum disc type filter with large capacity requirement, small floor area and good energy-saving effect, because the diameter of the sector plate is very large, the deflection amplitude of the filter disc can be increased in the operation process, and the scraper matched with the sector plate is very long. Frequent blowing and unloading can seriously affect the vacuum degree of equipment, a larger vacuum system needs to be equipped for ensuring the operation effect, the energy consumption is greatly increased, and a scraping device is needed to be adopted as a main unloading mode. The scraper structure always restricts the technical bottleneck of the development of the vacuum disc filter to be super-huge and energy-saving, the original fixed scraper device cannot meet the use requirement, the scraping effect cannot be influenced along with the increase of the diameter of the filter disc, and the distance between the scraper and the filter cloth can be accurately controlled, so that the performance requirements of equipment with different material properties are met. The invention has more advanced design, simpler structure, more convenient use and more convenient disassembly and replacement. In addition, the scraper structure does not need to be manually adjusted frequently, so that a large amount of manpower and material resources are saved. The novel vacuum disc type filter can be popularized and used on various vacuum disc type filters, can promote the development of the mining vacuum disc type filter to the super-large size, and has wide market application prospect.
The details of the above-mentioned parts are not described in detail since they are prior art.
Claims (2)
1. A self-adjusting scraper device for a vacuum disc filter, characterized in that: the method comprises the following steps:
the slurry tank side plates are positioned in the slurry tank of the filter and distributed on two sides of the filter disc;
the scraper structure sets up on the thick liquids groove curb plate, include:
the fixing plate is fixed with the slurry tank side plate through a bolt assembly;
a doctor blade;
the hinge is used for connecting the fixing plate and the scraper blade;
the scraper limiting structure is arranged on the side plate of the slurry tank and used for limiting the scraper blade; and the number of the first and second groups,
scraper is from pendulum structure includes:
the first support shaft is arranged at one end of the scraper blade, one end of the first support shaft extends out of the scraper blade and is provided with a roller, and the roller is clamped on a roller track on a guide rail of the sector plate fixing device;
the second support shaft is arranged at the other end of the scraper blade, one end of the second support shaft extends out of the scraper blade and is provided with a universal joint ball head, and the universal joint ball head is fixed on the slurry tank side plate through a ball head support and a support fixing frame;
the roller tracks synchronously deflect along with deflection of the sector plates, the scraper blade is driven by the first supporting shaft to synchronously deflect along with the sector plates, and the distance between the scraper blade and the filter cloth is kept relatively unchanged.
2. A self-adjusting scraper device for a vacuum disc filter according to claim 1, wherein: scraper limit structure includes:
the limiting blocks are of wedge-shaped structures and are distributed on the side plate of the slurry tank at intervals;
spacing subassembly of bolt includes:
the limiting bolt fixing frame is arranged on the slurry tank side plate;
the limiting bolt is arranged on the limiting bolt fixing frame, and the swinging range of the scraper blade can be adjusted by screwing the limiting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184831.3A CN114653127B (en) | 2022-02-28 | 2022-02-28 | Self-adjusting scraper device for vacuum disc filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184831.3A CN114653127B (en) | 2022-02-28 | 2022-02-28 | Self-adjusting scraper device for vacuum disc filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114653127A CN114653127A (en) | 2022-06-24 |
| CN114653127B true CN114653127B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210184831.3A Active CN114653127B (en) | 2022-02-28 | 2022-02-28 | Self-adjusting scraper device for vacuum disc filter |
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| Country | Link |
|---|---|
| CN (1) | CN114653127B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126655A2 (en) * | 1983-05-24 | 1984-11-28 | Dorr-Oliver Incorporated | Vacuum expressor device for rotary drum filter |
| CN2548717Y (en) * | 2002-05-14 | 2003-05-07 | 汕头市金通实业有限公司 | Scraper controll mechanism of coating machine |
| CN2764462Y (en) * | 2004-03-11 | 2006-03-15 | 高彬 | Scraper of ceramic filter |
| CN204723860U (en) * | 2015-06-23 | 2015-10-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of adjustable scraper |
| CN113617109A (en) * | 2021-09-24 | 2021-11-09 | 洛阳宝诺重型机械有限公司 | Cleaning device for vertical disc filter |
-
2022
- 2022-02-28 CN CN202210184831.3A patent/CN114653127B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126655A2 (en) * | 1983-05-24 | 1984-11-28 | Dorr-Oliver Incorporated | Vacuum expressor device for rotary drum filter |
| CN2548717Y (en) * | 2002-05-14 | 2003-05-07 | 汕头市金通实业有限公司 | Scraper controll mechanism of coating machine |
| CN2764462Y (en) * | 2004-03-11 | 2006-03-15 | 高彬 | Scraper of ceramic filter |
| CN204723860U (en) * | 2015-06-23 | 2015-10-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of adjustable scraper |
| CN113617109A (en) * | 2021-09-24 | 2021-11-09 | 洛阳宝诺重型机械有限公司 | Cleaning device for vertical disc filter |
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| Publication number | Publication date |
|---|---|
| CN114653127A (en) | 2022-06-24 |
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Effective date of registration: 20240326 Address after: 471000 No. 206, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: CITIC HEAVY INDUSTRIES Co.,Ltd. Country or region after: China Patentee after: Luoyang Mining Machinery Engineering Design Institute Co.,Ltd. Patentee after: CITIC Corporation of China Address before: 471000 No. 206, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: CITIC HEAVY INDUSTRIES Co.,Ltd. Country or region before: China Patentee before: Luoyang Mining Machinery Engineering Design Institute Co.,Ltd. |
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