CN1047040A - Drum vacuum filter - Google Patents
Drum vacuum filter Download PDFInfo
- Publication number
- CN1047040A CN1047040A CN 89103139 CN89103139A CN1047040A CN 1047040 A CN1047040 A CN 1047040A CN 89103139 CN89103139 CN 89103139 CN 89103139 A CN89103139 A CN 89103139A CN 1047040 A CN1047040 A CN 1047040A
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- China
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- precipitation
- flushing
- drum
- pallet
- base plate
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Abstract
Drum vacuum filter has drum barrel (1), filtering material (3) is housed for it and part immersion Sheng is filtered in the storage tank (7) of liquid, also has the flushing settler, this device comprises the double walled floor pallet (9) of at least one flushing precipitation usefulness, and feed pipe (14) and helping air supply pipe (13).
Description
The present invention relates to the chemical technology field, the filtration and the flushing device of powdery product during particularly alumina is produced, it can be used for mining, petrochemical industry, coal, food and other industrial department.
Aluminium industry is most important department in the nonferrous metallurgy.
The raw material that electrolysis is produced aluminium is an aluminium oxide, and it is extracted by bauxite ore with the most current hydro chemical method.
Above-mentioned production method of alumina is a kind of production of a large amount of consumable materials.
The product that is obtained to pass through various processing, particularly aluminium hydroxide and aluminate solution multiphase system will through filtration with rinse stage in case separating solids mutually with liquid mutually, and rinse out the interior dissolved impurity of aluminium hydroxide.Preferably adopt high efficiency douche in this case with flushing liquor " displacement " aluminate solution.This a kind of situation can reduce the moisture that enters in the aluminate greatly, thereby reduces the consumption of steam when evaporating aluminate in the production cycle.
Known a kind of drum vacuum filter (B.A. scholar Re Kefu " separation theorem of suspension and put into practice ", nineteen sixty-eight, chemical publishing house, P.303).This device has drum barrel, and drum barrel is divided into rectangular section by inner grid, and is connected with vacuum source by the tubular journal on the drum barrel axle.On the mesh surface of drum barrel, filtering material is housed.The hollow shaft of drum barrel is contained on the sliding bearing, and the one end is connected with transmission mechanism, and the other end is connected with vacuum source.Drum barrel partly is in the storage tank, and this storage tank is furnished with agitator and scrapes the scraper of getting precipitation.The device of flushing precipitation is housed above drum vacuum filter, and it has the feed pipe of band shower nozzle and the belt band that moves on roller.At this moment the part band is connected with filtering material.
When drum barrel rotates, its each grid by tubular journal sequentially is connected with vacuum source with sequentially by filtration, dehydration and rinsing area.
In filtering area, because action of pressure, on filtering material, form the beds of precipitation, and the liquid that is filtered suspension enters in the gatherer partly.Air permeates by the beds of precipitation in drying zone, thereby has reduced the moisture of the beds of precipitation.
In rinsing area, supply with flushing liquor by shower nozzle to precipitation, flushing liquor passes the pore on the precipitation, takes away dissolved substance, is collected in another gatherer.
In order to prevent to form crackle in the flushing process on precipitating, precipitation is belt with cover firmly by part.Go in ring band owing to move along molgogger with the precipitation friction.That washed scraped by drum barrel by special scraper with precipitation drying.The filter weak point is could evenly spray flushing liquor to precipitation surface with shower nozzle.
The solid inclusion that shower nozzle usually is rinsed in the liquid is stopped up.At this moment because flushing liquor reduces flush efficiency greatly along the uneven distribution of precipitation surface.
With the drum vacuum filter of the immediate prior art of the present invention be the device of in BP (GB, A, 915330), announcing.This device has contains the storage tank be filtered liquid, is fixed with on it to rotate the bearing that the drum barrel hollow shaft uses and scrape the scraper of getting precipitation.
On the mesh surface of drum barrel filtering material is housed, this surface portion immerses to contain and is filtered in the storage tank of liquid.
Drum vacuum filter is connected with vacuum source by the tubular journal on the axle.The other end of drum barrel axle is connected with the transmission mechanism of rotation.The device of flushing precipitation is housed above the drum filter, and it is formed by the pallet that is connected with filtering material with to the feed pipe that pallet supplies water.Each pallet has end plate and vertical panel.Vertical panel contacts with filtering material by flexible member in this case.When being filtered liquid and entering that storage tank and drum barrel are inner to form vacuum, on filtering material, generate the beds of precipitation, at this moment liquid is introduced in the collecting box by tubular journal along special groove.Precipitation upwards rises the active region of access arrangement flushing precipitation along with drum barrel.Be in the flushing that the flushing liquor in the tray slot is replaced dissolved substances and promoted to precipitate by the pore of precipitation.
When the precipitation of partial flushing rose highlyer, second tray slot that purer flushing liquor is housed carried out the flushing second time to it.Precipitation through last flushing finally is mingled with by clean, and after deflating by precipitation, it is scraped by filtering on the filter cloth by scraper.Yet the work of above-mentioned drum vacuum filter is reliable inadequately, because the flexible member of pallet is connected with precipitation.When handling the polydispersion suspension of fast deposition, on filtering material, form the beds of precipitation in uneven thickness.At this moment form imprecision in the pallet bottom, flushing liquor flows into and is positioned at the pallet of bottom, thereby has reduced the efficient and the quality that has influenced the product that obtains of flushing.
Basic task of the present invention provides a kind of like this drum vacuum filter, makes it have high flush efficiency and functional reliability by means of the improvement of flushing settler structure.
The method that solves above-mentioned task is, in drum vacuum filter, has drum barrel, on its mesh surface filtering material is housed, drum barrel is connected with vacuum source, also have the Sheng that immerses the part drum barrel and be filtered the storage tank of liquid and the device of flushing precipitation, this device has the feed pipe of at least one pallet that is connected with filtering material and pallet, according to the present invention, the pallet of flushing settler is equipped with second layer base plate below the ground floor base plate, and between ground floor base plate and the second layer base plate helping air supply pipe is housed.
Below describe in detail with object lesson of carrying out and accompanying drawing, wherein:
Fig. 1 shows the full view of drum vacuum filter;
Fig. 2 shows the drawing in side sectional elevation of flusher;
Fig. 3 shows the profilograph of flusher.
Drum vacuum filter of the present invention has drum barrel 1(Fig. 1), on its mesh surface 2 filtering material 3 is housed.Drum barrel 1 rotates on hollow shaft 4, and is connected (not shown) by axle journal with vacuum source.The block bearing 6 of axle 4 is fixed on and is filtered on the liquid storage vessel 7, and drum barrel 1 part immerses in this storage tank.On the longitudinal edge of storage tank 7, be fixed with and scrape the scraper 8 of getting precipitation.Upper fixed at drum barrel 1 has flushing precipitation device.This device is made up of at least one pallet 9, and pallet has end wall 10(Fig. 2,3), they are contained on the filtering material 3 at certain intervals, and are furnished with the elastomeric material of porous.Below the ground floor base plate 11 of pallet 9, second layer base plate 12 is housed, and helping air supply pipe 13 is housed between the two-layer base plate.The top that is positioned at pallet 9 is a feed pipe 14, has a round 15 on it.On the wave material 3 excessively of Fig. 2, show and be filtered the beds of precipitation.
The working method of this device is as follows.
Filter energising work and after vacuum is caused in drum barrel 1 inside forms the beds of precipitation on filtering material 3.Pass through round 15 to pallet 9 water supply (or other flushing liquor) along feed pipe 14.Supply with compressed air along helping air supply pipe 13 simultaneously.At this moment flushing liquor is full of the bottom of pallet 9, along its evenly trickling of surface.The pore of flushing liquor infiltration elastomeric material waters precipitation equably, wherein dissolving is mingled with develop.
When precipitation surface produces inhomogeneities, their can be compensated by following effect: at first, elastomeric material tends to repeat to precipitate the cross section when sliding and the effect that produces, secondly, and by the effect of helping air supply pipe 13 ejection compressed air streams.Air overbottom pressure between base plate 11 and base plate 12 helps when device work base plate 12 to be overlayed on precipitation surface, prevented that liquid from trickling downwards, and base plate 11 protuberances forms the space of discharging for air.Scraped and enter subsequent processes by scraper 8 by the filtering material surface through flushing and the dry precipitation of part.
Therefore, this device because pallet 9 has air-tightness, has guaranteed high flush efficiency when washing precipitation in uneven thickness.
Eliminated the phenomenon that flushing liquor " is flushed away " owing to imprecision in the pallet 9 in this case, thereby improved serviceability greatly and improved the reliability of work.
Claims (1)
- Drum vacuum filter has drum barrel (1), on its mesh surface (2) filtering material (3) is housed, and drum barrel is connected with vacuum source; The Sheng that also has immersion part drum barrel (1) is filtered the storage tank (7) of liquid; And the device of flushing precipitation, this device has the feed pipe (14) of at least one pallet (9) that is connected with filtering material (3) and pallet, it is characterized in that described flushing settler is equipped with second layer base plate (12) below its ground floor base plate (11), and between ground floor base plate (11) and second layer base plate (12), helping air supply pipe (13) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103139 CN1047040A (en) | 1989-05-10 | 1989-05-10 | Drum vacuum filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103139 CN1047040A (en) | 1989-05-10 | 1989-05-10 | Drum vacuum filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1047040A true CN1047040A (en) | 1990-11-21 |
Family
ID=4855000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89103139 Pending CN1047040A (en) | 1989-05-10 | 1989-05-10 | Drum vacuum filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047040A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998874A (en) * | 2008-04-11 | 2011-03-30 | 奥图泰(滤器)公司 | Liquid extraction filter and method for cleaning it |
| CN113874099A (en) * | 2019-06-14 | 2021-12-31 | 加州大学评议会 | Basic cation enrichment and water electrolysis to provide CO2Mineralization and global scale carbon management |
-
1989
- 1989-05-10 CN CN 89103139 patent/CN1047040A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998874A (en) * | 2008-04-11 | 2011-03-30 | 奥图泰(滤器)公司 | Liquid extraction filter and method for cleaning it |
| CN113874099A (en) * | 2019-06-14 | 2021-12-31 | 加州大学评议会 | Basic cation enrichment and water electrolysis to provide CO2Mineralization and global scale carbon management |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |