WO2008123704A2 - Solid-liquid separator, apparatus and method using the same - Google Patents
Solid-liquid separator, apparatus and method using the same Download PDFInfo
- Publication number
- WO2008123704A2 WO2008123704A2 PCT/KR2008/001918 KR2008001918W WO2008123704A2 WO 2008123704 A2 WO2008123704 A2 WO 2008123704A2 KR 2008001918 W KR2008001918 W KR 2008001918W WO 2008123704 A2 WO2008123704 A2 WO 2008123704A2
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- WIPO (PCT)
- Prior art keywords
- liquid
- solid
- slurry
- solids
- rotary filter
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
-
- 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
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- 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
- B01D33/70—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
- B01D33/725—Special treatment of the feed stream before contacting the filtering element, e.g. cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
Definitions
- the present invention relates to a solid-liquid separator for separating solids and liquid from slurry using high-speed rotation and vacuum suction force and an apparatus and method for separating solids and liquid from slurry using the same, and, more particularly, to a solid- liquid separator, in which slurry is sprayed on a filter, which rotates at high speed, and thus solids and liquid are instantaneously separated from the slurry by centrifugal force, and then the solids and liquid are separated from each other by vacuum suction force and then discharged, and an apparatus and method for separating solids and liquid from slurry using the same.
- slurry is a general term for mixtures, such as a mixture of solids and liquid, that is, a suspension in which fine solid particles are suspended in water, etc.
- examples of slurry include industrial waste, manure, food rubbish, etc.
- the pressing process which is a process of treating slurry by pressing slurry using several porous plates and screens and then separating the slurry, is advantageous in that solids in slurry can be caked and then treated.
- the filtering process which is a process of treating slurry by placing slurry on a porous plate or a net and then separating the slurry using vibrations, is advantageous in that the process can be continuously performed.
- an object of the present invention is to provide a solid-liquid separator in which a rotary filter and a scraper are provided and rotated, and slurry is thinly sprayed on the rotary filter, which rotates at high speed, so that solids and liquid are instantaneously separated from the slurry by strong centrifugal force, and the solid adhered to the rotary filter is removed from the rotary filter by the action of the scraper and is simultaneously discharged to the outside by suction force, thereby efficiently separating solids and liquid from slurry.
- Another object of the present invention is to provide a solid- liquid separator which can very simply and instantaneously separate solids and liquid from slurry, thus separating solids and liquid from various slurries at low cost and high speed.
- the present invention provides a method of separating slurry into solids and liquid, including: introducing slurry into a solid-liquid separator using a vacuum suction force; spraying the introduced slurry into a rotary filter installed in the solid-liquid separator and rotating at high speed; filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid using strong centrifugal force! removing the solids adhered to the rotary filter from the rotary filter using a scraper and simultaneously discharging the removed solids to the outside using the suction force of a vacuum suction apparatus', and discharging the liquid separated from the solids to the outside through an additional liquid discharge pipe.
- the process of filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid may be conducted multiple times.
- the present invention provides a solid-liquid separator for separating slurry into solids and liquid, including: a case including a slurry introduction pipe for introducing slurry at one side thereof and a liquid discharge pipe for discharging liquid of slurry at a bottom side thereof; a rotary filter assembly including a solid discharge pipe for discharging solids of slurry provided at the opposite side of the slurry introduction pipe of the case, and a porous rotary filter for separating solids and liquid from slurry using centrifugal force and discharging only the liquid through the liquid discharge pipe; a power transmission unit coaxial Iy connected to the solid discharge pipe such that the rotary filter assembly is rotated; a scraper adjacent to the rotary filter such that the solids adhered to the rotary filter are separated from the rotary filter; and a vacuum suction apparatus for generating a vacuum suction force connected to the solid discharge pipe in order to suck the solids separated from the rotary filter by the scraper.
- the slurry introduction pipe is provided therein with a fixed fan, and the fixed fan applies rotation force to the introduced slurry. That is, when slurry is introduced into the solid-liquid separator through the slurry introduction pipe, the introduced slurry passes through the fixed fan, and simultaneously rotates in one direction depending on the shape of the fixed fan, and is thinly sprayed thereinto.
- air suction holes are formed in one side of the case, air flows into the solid-liquid separator when slurry is sucked by a vacuum.
- the porous rotary filters may have a cylindrical shape, and may be multi-layered. It is preferred that the multi-layered porous rotary filters be configured such that the pore size is gradually decreased from the inner filter to the outer filter.
- the scraper is formed of a net, and includes a protrusion which is formed along the lengthwise direction of the scraper and serves to separate the solids adhered to the rotary filter therefrom, and a rotary fan provided at the front end thereof.
- the solid-liquid separation system provided with the solid-liquid separator, may include a slurry tank supplying slurry into the solid- liquid separator, a flat solid-liquid separator connected to a liquid discharge pipe of the solid-liquid separator and secondarily separating the slurry into solids and liquid, a liquid collection tank collecting the liquid separated through the flat solid-liquid separator, and a solid collection tank collecting the solids discharged from the solid-liquid separator and the flat solid-liquid separator.
- the solid-liquid separator may include: flat filters; spray nozzles for spraying a suspension into the flat filters; and solid suction tubes for sucking the solids filtered by the flat filters using the vacuum suction force of the vacuum suction apparatus, wherein, when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid-liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction pipes by the vacuum suction force of the vacuum suction apparatus.
- FIG. 1 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to an embodiment of the present invention
- FIG.2 is an assembled sectional view of the solid-liquid separator according to an embodiment of the present invention.
- FIG. 3 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to another embodiment of the present invention.
- FIG. 4 is a sectional view showing a flat-type solid-liquid separator according to the present invention.
- FIG. 5 is a schematic view showing an entire solid-liquid separation system including the solid-liquid separator of the present invention. description of the elements in the drawings> 10 : slurry tank 12 : air suction pipe 20 ' vacuum solid-liquid separator 50 : vacuum suction apparatus
- FIG. 1 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and a vacuum suction force, according to an embodiment of the present invention
- FIG. 2 is an assembled sectional view of the solid-liquid separator according to an embodiment of the present invention
- a solid-liquid separator 100 includes a tubular or cylindrical case 120, and a rotary filter assembly 160 and scraper 140 inserted into the case 120.
- the rotary filter assembly 160 and scraper 140 also have a tubular or cylindrical shape.
- the case 120 is provided at one side thereof with a slurry introduction pipe 126 for introducing slurry, and is provided at a bottom side thereof with a liquid discharge pipe 13 for discharging liquid of slurry therethrough.
- the slurry introduction pipe 126 is provided therein with a fixed fan 122, and the fixed fan 122 serves to enable the rotation of slurry. That is, when slurry flows into the case 120 due to the suction force of the vacuum suction apparatus, the slurry passes through the fixed fan 122, and simultaneously rotates in one direction according to the shape of the fixed fan 122, and thus sucked.
- air suction holes 124 are formed in one side of the case 120. It is preferred that the air suction holes 124 be disposed at regular intervals. A vacuum suction apparatus, described later, sucks air from outside through the air suction holes 124.
- the rotary filter assembly 160 is inserted into the case 120, and includes a porous rotary filter 162 for separating solids and liquid from slurry using centrifugal force and discharging only the liquid through the liquid discharge pipe 13.
- the porous rotary filter 162 having a plurality of pores, is formed to have a cylindrical shape, and serves to pass only liquid therethrough. Therefore, solids do not pass through the rotary filter 162, but adhere closely to the surface thereof.
- a solid discharge pipe 18 for discharging solids of slurry therethrough is provided at the other side of the rotary filter assembly 160, that is, at the opposite side of the slurry introduction pipe 126 of the case 120.
- the solid discharge pipe 18, through which solids of slurry are discharged by a vacuum suction force of the vacuum suction apparatus, is coaxial Iy formed at the other side of the rotary filter assembly 160.
- the rotary filter assembly 160 Since the rotary filter assembly 160 is connected to a power transmission unit 168, driven by a driving motor (not shown), into which the solid discharge pipe 18 is inserted, when the driving motor is rotated, the driving motor transfers the rotation force to the rotary filter assembly 160 through the power transmission unit 168, so that the rotary filter assembly 160 is also rotated, with the result that centrifugal force is generated, thereby separating solids and liquid from slurry using centrifugal force.
- a driving motor not shown
- Relative centrifugal force 1.119*HT 5 Xr*rpm 2 That is, since centrifugal force is proportional to rpm 2 , the centrifugal force becomes several times ⁇ several hundreds times gravity as the rotation speed is increased, and thus slurry is instantaneously separated into solids and liquid by strong centrifugal force because it is thinly sprayed on a rotary filter, and thus the deposition time thereof is very short .
- the scraper 140 is adjacent to the rotary filter 162 such that the solids adhered to the rotary filter 162 are separated from the rotary filter 162, and is configured such that both ends of the scraper 140 are engaged with the rotary filter assembly 160 using bearings 145 and 165, and thus the scraper 140 is rotated together with the rotary filter 162.
- the scraper 140 is formed of a net, and includes a protrusion 144 which is formed in the lengthwise direction of the scraper 140 and serves to separate the solids adhered to the rotary filter therefrom.
- the scraper 140 is provided at the front end thereof with a rotary fan 142.
- the rotary fan 142 When the scraper 140 is coupled with the case 120, the rotary fan 142 is rotated by the slurry, supplied with rotation force by the fixed fan 122, so that an anti-rotation force is applied to the scraper 140, with the result that there is a difference in rotation speed between the scraper 140 and the rotary filter.
- the protrusion 144 formed on the scraper 140 scrapes the rotary filter such that the solids adhered to the rotary filter can be separated from the rotary filter, although the scraper 140 is also rotated.
- a vacuum suction apparatus (not shown) for generating a vacuum suction force is connected to the solid discharge pipe 18 in order to suck the solids separated from the rotary filter by the scraper.
- FIG.3 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to another embodiment of the present invention, in which the rotary filters are provided in multiple layers.
- the rotary filters 262, 264 and 266 are provided in triple layers.
- the multi-layered porous rotary filters can more efficiently separate slurry into solids and liquid.
- respective solids included in the slurry can be separated according to the particle size thereof.
- the triple-layered filters 262, 264 and 266 are configured such that the pore size is gradually decreased from the inner filter to the outer filter.
- a solid discharge pipe 18 for discharging solids therethrough is provided at the other side of the rotary filter assembly 260, that is, at the opposite side of the slurry introduction pipe 126 of the case 220.
- the solid discharge pipe 18, through which solids of slurry are discharged by the vacuum suction force of the vacuum suction apparatus, is coaxial Iy formed at the other side of the rotary filter assembly 260.
- the rotary filter assembly 260 is connected to a power transmission unit 268, driven by a driving motor (not shown), into which the solid discharge pipe 18 is inserted, when the driving motor is rotated, the driving motor transfers rotation force to the rotary filter assembly 260 through the power transmission unit 268, so that the rotary filter assembly 260 is also rotated, with the result that centrifugal force is generated, thereby separating solids and liquid from slurry using centrifugal force.
- a solid discharge hole 262a for separately discharging a very small amount of solids is formed between two outer rotary filters 264 and 262 of the triple-layered rotary filters 266, 264 and 262.
- the very small amount of solids, filtered by the rotary filters 264 and 262, may be discharged to the outside through the solid discharge hole 262a, and may also be discharged outside through a solid discharge pipe 15 formed in the lower end of the case 220.
- the reference number "225" designates a liquid blocking ring.
- the liquid blocking ring 225 which is formed on the inner surface of the case 220 at a predetermined height, serves to block the liquid of slurry such that the liquid is not mixed with the solids filtered by the rotary filter 262.
- the scraper 240 is adjacent to the rotary filters such that the solids adhered to the rotary filters are separated from the rotary filters, and is configured such that both ends of the scraper 240 are engaged with the rotary filter assembly 260 using bearings 245 and 265, and thus the scraper 240 is rotated together with the rotary filters.
- the scraper 240 is formed of a net, and includes protrusions 244 and 248, which are formed in the lengthwise direction of the scraper 240 and serve to separate the solids adhered to the rotary filters therefrom. Further, the scraper 240 is provided at the front end thereof with the rotary fan 242.
- the rotary fan 242 When the scraper 240 is coupled with the case 220, the rotary fan 242 is rotated by the slurry, which is supplied with rotation force by the fixed fan 222, so that an anti-rotation force is applied to the scraper 240, with the result that there is a difference in rotation speed between the scraper 240 and the rotary filters.
- the protrusions 244 and 248 formed on the scraper 240 scrapes the rotary filters such that the solids adhered to the rotary filters can be separated from the rotary filters, even though the scraper 240 is also rotated.
- a vacuum suction apparatus (not shown) for generating vacuum suction force is connected to the solid discharge pipe 18 in order to suck the solids separated from the rotary filters by the scraper 240.
- slurry is separated into solids and liquid by the centrifugal force generated due to the rotation of the rotary filter assembly 260, the scraper 240 separates the solids adhered to the rotary filters therefrom, and the vacuum suction apparatus generates suction force for sucking the solids separated from the rotary filters, so that liquid is discharged to the outside through the liquid discharge pipe 13, and solids are discharged thereto through the solid discharge pipe 18.
- a method of separating slurry into solids and liquid according to the present invention includes: introducing slurry into a solid-liquid separator using a vacuum suction force; spraying the introduced slurry on a rotary filter installed in the solid-liquid separator and rotating at high speed; filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid by strong centrifugal force; removing the solids adhered to the rotary filter from the rotary filter using a scraper and simultaneously discharging the removed solids to the outside using the suction force of a vacuum suction apparatus; and discharging the liquid separated from the solids to the outside through an additional liquid discharge pipe.
- the step of filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid may be conducted multiple times.
- slurry is thinly sprayed on the porous rotary filter, which rotates at high speed, so that the sprayed slurry is instantaneously separated into solids and liquid by strong centrifugal force, and the solids adhered to the rotary filter are removed from the rotary filter by the action of the scraper and are simultaneously discharged to the outside by vacuum suction force, with the result that the solids and liquid are separately discharged through individual pipes, thereby efficiently separating the slurry into solids and liquid.
- FIG. 5 shows a solid-liquid separation system including the solid- liquid separator of the present invention.
- the solid-liquid separation system includes a solid-liquid separator 20, a slurry tank 10, supplying slurry into the solid-liquid separator 20, a flat solid-liquid separator 60 connected to a liquid discharge pipe 13 of the solid-liquid separator 20 and secondarily separating the slurry into solids and liquid, a liquid collection tank 70, collecting the liquid separated through the flat solid-liquid separator 60, and a solid collection tank 40, collecting the solids discharged from the solid-liquid separator 20 and the flat solid- liquid separator 60.
- an air suction pipe 12 for sucking air be formed at the front end of the vacuum solid-liquid separator 20, and that a liquid tank 30 for storing liquid be provided between the vacuum solid-liquid separator 20 and the flat solid-liquid separator 60.
- the solids and liquid of slurry are sucked by the suction force of a vacuum suction apparatus 50.
- the vacuum suction apparatus must communicate with other apparatuses through pipes.
- the flat solid-liquid separator 60 includes multi-layered flat filters 62, 64 and 66, spray nozzles 61, 63 and 65 for spraying a suspension into the flat filters, and solid suction tubes 67, 68 and 69 for sucking the solids filtered by the flat filters using the vacuum suction force of the vacuum suction apparatus.
- the flat solid-liquid separator 60 when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid-liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction pipes by the vacuum suction force of the vacuum suction apparatus.
- liquid collection plates 62a, 64a and 66a are provided under the flat filters 62, 64 and 66, respectively.
- the spray nozzles 61, 63 and 65 are connected to a suspension supply pipe 14, and the solid suction tubes 67, 68 and 69 are connected to a solid suction pipe 16.
- the spray nozzles 61, 63 and 65 and the solid suction tubes 67, 68 and 69 reciprocate while operating.
- the configuration for reciprocating the spray nozzle and solid suction tubes may be variously applied, and the present invention is not limited in regards thereto.
- the flat solid-liquid separator 60 when a suspension is sprayed onto the flat filters through the spray nozzles 61, 63 and 65 and then passes through the flat filters 62, 64 and 66 due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid- liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction tubes by the vacuum suction force of the vacuum suction apparatus. Further, in the flat solid-liquid separator 60, the flat filters are provided in multiple layers, thus separating a large amount of suspension into solids and liquid at a time.
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Abstract
Disclosed herein is a solid-liquid separator in which a porous rotary filter and a scraper are provided and rotated at high speed, and slurry is thinly sprayed on the porous rotary filter, which rotates at high speed, so that solids and liquid are instantaneously separated from the slurry by strong centrifugal force, and the solids adhered to the porous rotary filter are removed from the porous rotary filter by the action of the scraper and are simultaneously discharged to the outside by suction force, with the result that the solids and liquid are separately discharged through individual pipes, thereby efficiently separating solids and liquid from various slurries at low cost and high speed, and an apparatus and method for separating solids and liquid from slurry using the same.
Description
[Invention Title]
SOLID-LIQUID SEPARATOR, APPARATUS AND METHOD USING THE SAME [Technical Field]
The present invention relates to a solid-liquid separator for separating solids and liquid from slurry using high-speed rotation and vacuum suction force and an apparatus and method for separating solids and liquid from slurry using the same, and, more particularly, to a solid- liquid separator, in which slurry is sprayed on a filter, which rotates at high speed, and thus solids and liquid are instantaneously separated from the slurry by centrifugal force, and then the solids and liquid are separated from each other by vacuum suction force and then discharged, and an apparatus and method for separating solids and liquid from slurry using the same. [Background Art] Generally, slurry is a general term for mixtures, such as a mixture of solids and liquid, that is, a suspension in which fine solid particles are suspended in water, etc., and examples of slurry include industrial waste, manure, food rubbish, etc.
As methods of treating slurry, such as industrial waste, manure, food rubbish, etc., a natural dry process and a mechanical process are used. However, the natural dry process is problematic in that bad smells and sewage water are generated when slurry is dried, thus causing severe environmental pollution.
As the mechanical process of treating slurry, a pressing process and a filtering process are used.
The pressing process, which is a process of treating slurry by pressing slurry using several porous plates and screens and then separating the slurry, is advantageous in that solids in slurry can be caked and then treated. Further, the filtering process, which is a process of treating slurry by placing slurry on a porous plate or a net and then separating the slurry using vibrations, is advantageous in that the process can be continuously performed.
As such, in industrial fields, it takes a lot of time and is expensive to treat industrial waste and agricultural and livestock waste.
However, as described above, conventional technologies are problematic in that the apparatuses used in these technologies are complicated and thus difficult to operate, and it is expensive to install the apparatuses. Further, the conventional mechanical process is also problematic in that many apparatuses must be installed to treat slurry, and an apparatus for discharging slurry is additionally installed, so that it takes a lot of time and is expensive to install the apparatuses, and in addition, the maintenance and operation thereof is difficult even after the installation thereof.
[Disclosure] [Technical Problem]
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a solid-liquid separator in which a rotary filter and a scraper are provided and rotated, and slurry is thinly sprayed on the rotary filter, which rotates at high speed, so that solids and liquid are instantaneously separated from the slurry by strong centrifugal force, and the solid adhered to the rotary filter is removed from the rotary filter by the action of the scraper and is simultaneously discharged to the outside by suction force, thereby efficiently separating solids and liquid from slurry.
Another object of the present invention is to provide a solid- liquid separator which can very simply and instantaneously separate solids and liquid from slurry, thus separating solids and liquid from various slurries at low cost and high speed. [Technical Solution]
In order to accomplish the above objects, the present invention provides a method of separating slurry into solids and liquid, including: introducing slurry into a solid-liquid separator using a vacuum suction force; spraying the introduced slurry into a rotary filter installed in the solid-liquid separator and rotating at high speed; filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid using strong centrifugal force! removing the solids adhered to the rotary filter from the rotary filter using a scraper and simultaneously discharging the removed solids to the outside using the suction force of a vacuum suction apparatus', and discharging the liquid separated from the solids to the outside through an additional liquid discharge pipe. Here, the process of filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid may be conducted multiple times.
Through the above processes, solids and liquid are each separated from slurry, which is industrial waste, thus preventing environmental pollution.
Further, in order to accomplish the above objects, the present invention provides a solid-liquid separator for separating slurry into solids and liquid, including: a case including a slurry introduction pipe for introducing slurry at one side thereof and a liquid discharge pipe for discharging liquid of slurry at a bottom side thereof; a rotary filter assembly including a solid discharge pipe for discharging solids of slurry provided at the opposite side of the slurry introduction pipe of the case, and a porous rotary filter for separating solids and liquid from slurry using centrifugal force and discharging only the liquid through the liquid
discharge pipe; a power transmission unit coaxial Iy connected to the solid discharge pipe such that the rotary filter assembly is rotated; a scraper adjacent to the rotary filter such that the solids adhered to the rotary filter are separated from the rotary filter; and a vacuum suction apparatus for generating a vacuum suction force connected to the solid discharge pipe in order to suck the solids separated from the rotary filter by the scraper.
Here, the slurry introduction pipe is provided therein with a fixed fan, and the fixed fan applies rotation force to the introduced slurry. That is, when slurry is introduced into the solid-liquid separator through the slurry introduction pipe, the introduced slurry passes through the fixed fan, and simultaneously rotates in one direction depending on the shape of the fixed fan, and is thinly sprayed thereinto.
Further, since air suction holes are formed in one side of the case, air flows into the solid-liquid separator when slurry is sucked by a vacuum.
The porous rotary filters may have a cylindrical shape, and may be multi-layered. It is preferred that the multi-layered porous rotary filters be configured such that the pore size is gradually decreased from the inner filter to the outer filter.
Here, the scraper is formed of a net, and includes a protrusion which is formed along the lengthwise direction of the scraper and serves to separate the solids adhered to the rotary filter therefrom, and a rotary fan provided at the front end thereof. The solid-liquid separation system, provided with the solid-liquid separator, may include a slurry tank supplying slurry into the solid- liquid separator, a flat solid-liquid separator connected to a liquid discharge pipe of the solid-liquid separator and secondarily separating the slurry into solids and liquid, a liquid collection tank collecting the liquid separated through the flat solid-liquid separator, and a solid collection tank collecting the solids discharged from the solid-liquid separator and the flat solid-liquid separator.
Moreover, the solid-liquid separator may include: flat filters; spray nozzles for spraying a suspension into the flat filters; and solid suction tubes for sucking the solids filtered by the flat filters using the vacuum suction force of the vacuum suction apparatus, wherein, when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid-liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction pipes by the vacuum suction force of the vacuum suction apparatus.
[Advantageous Effects]
According to the present invention, environmental pollution can be prevented because solids and liquid are each separated from slurry, which is industrial waste, and solids and liquid can be separated from various slurries at low cost and high speed because solids and liquid are very simply and instantaneously separated from slurry. [Description of Drawings]
FIG. 1 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to an embodiment of the present invention;
FIG.2 is an assembled sectional view of the solid-liquid separator according to an embodiment of the present invention;
FIG. 3 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to another embodiment of the present invention;
FIG. 4 is a sectional view showing a flat-type solid-liquid separator according to the present invention; and
FIG. 5 is a schematic view showing an entire solid-liquid separation system including the solid-liquid separator of the present invention. description of the elements in the drawings> 10 : slurry tank 12 : air suction pipe 20 ' vacuum solid-liquid separator 50 : vacuum suction apparatus
60 : flat solid-liquid separator 62, 64, 66 : flat filters 70 : liquid collection tank
120 case 122 fixed fan 124 air suction holes 140 scraper 142 rotary fan 144 protrusion 160 rotary filter assembly 162 rotary filter 168 power transmission unit [Best Mode]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.
FIG. 1 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and a vacuum suction force, according to an embodiment of the present invention, and FIG. 2 is an assembled sectional view of the solid-liquid separator according to an embodiment of
the present invention;
As shown in FIG. 1, a solid-liquid separator 100 according to an embodiment of the present invention includes a tubular or cylindrical case 120, and a rotary filter assembly 160 and scraper 140 inserted into the case 120.
Here, the rotary filter assembly 160 and scraper 140 also have a tubular or cylindrical shape. The case 120 is provided at one side thereof with a slurry introduction pipe 126 for introducing slurry, and is provided at a bottom side thereof with a liquid discharge pipe 13 for discharging liquid of slurry therethrough.
Here, the slurry introduction pipe 126 is provided therein with a fixed fan 122, and the fixed fan 122 serves to enable the rotation of slurry. That is, when slurry flows into the case 120 due to the suction force of the vacuum suction apparatus, the slurry passes through the fixed fan 122, and simultaneously rotates in one direction according to the shape of the fixed fan 122, and thus sucked.
Further, air suction holes 124 are formed in one side of the case 120. It is preferred that the air suction holes 124 be disposed at regular intervals. A vacuum suction apparatus, described later, sucks air from outside through the air suction holes 124.
The rotary filter assembly 160 is inserted into the case 120, and includes a porous rotary filter 162 for separating solids and liquid from slurry using centrifugal force and discharging only the liquid through the liquid discharge pipe 13. The porous rotary filter 162, having a plurality of pores, is formed to have a cylindrical shape, and serves to pass only liquid therethrough. Therefore, solids do not pass through the rotary filter 162, but adhere closely to the surface thereof.
Meanwhile, a solid discharge pipe 18 for discharging solids of slurry therethrough is provided at the other side of the rotary filter assembly 160, that is, at the opposite side of the slurry introduction pipe 126 of the case 120.
The solid discharge pipe 18, through which solids of slurry are discharged by a vacuum suction force of the vacuum suction apparatus, is coaxial Iy formed at the other side of the rotary filter assembly 160.
Since the rotary filter assembly 160 is connected to a power transmission unit 168, driven by a driving motor (not shown), into which the solid discharge pipe 18 is inserted, when the driving motor is rotated, the driving motor transfers the rotation force to the rotary filter assembly 160 through the power transmission unit 168, so that the rotary filter assembly 160 is also rotated, with the result that centrifugal force is generated, thereby separating solids and liquid from slurry using centrifugal force.
Here, as the rotation speed of the rotary filter assembly 160 is
increased, centrifugal force is also increased. The reason is that relative centrifugal force is determined by Equation 1 below. [Equation 1]
Relative centrifugal force = 1.119*HT5Xr*rpm2 That is, since centrifugal force is proportional to rpm2, the centrifugal force becomes several times ~ several hundreds times gravity as the rotation speed is increased, and thus slurry is instantaneously separated into solids and liquid by strong centrifugal force because it is thinly sprayed on a rotary filter, and thus the deposition time thereof is very short .
Based on this principle, in the present invention, when slurry is thinly sprayed on the rotary filter 162, and, simultaneously, the rotary filter assembly 160 is rotated at high speed, strong centrifugal force is generated, and thus the slurry is instantaneously separated into liquid and solids by the strong centrifugal force. At this time, the solids are sucked using the suction force of a vacuum suction apparatus.
Meanwhile, the scraper 140 is adjacent to the rotary filter 162 such that the solids adhered to the rotary filter 162 are separated from the rotary filter 162, and is configured such that both ends of the scraper 140 are engaged with the rotary filter assembly 160 using bearings 145 and 165, and thus the scraper 140 is rotated together with the rotary filter 162.
Here, the scraper 140 is formed of a net, and includes a protrusion 144 which is formed in the lengthwise direction of the scraper 140 and serves to separate the solids adhered to the rotary filter therefrom.
Further, the scraper 140 is provided at the front end thereof with a rotary fan 142.
When the scraper 140 is coupled with the case 120, the rotary fan 142 is rotated by the slurry, supplied with rotation force by the fixed fan 122, so that an anti-rotation force is applied to the scraper 140, with the result that there is a difference in rotation speed between the scraper 140 and the rotary filter.
Therefore, due to the difference in rotation speed between the scraper 140 and the rotary filter 142, the protrusion 144 formed on the scraper 140 scrapes the rotary filter such that the solids adhered to the rotary filter can be separated from the rotary filter, although the scraper 140 is also rotated.
Meanwhile, a vacuum suction apparatus (not shown) for generating a vacuum suction force is connected to the solid discharge pipe 18 in order to suck the solids separated from the rotary filter by the scraper.
In the solid-liquid separator configured in this manner, as shown in FIG. 2, slurry is separated into solids and liquid by the centrifugal force generated due to the rotation of the rotary filter assembly 160, the scraper 140 separates the solids adhered to the rotary filter therefrom,
and the vacuum suction apparatus generates suction force for sucking the solids separated from the rotary filter, so that liquid is discharged to the outside through the liquid discharge pipe 13, and solids are discharged thereto through the solid discharge pipe 18. FIG.3 is an exploded perspective view showing a solid-liquid separator, using high-speed rotation and vacuum suction force, according to another embodiment of the present invention, in which the rotary filters are provided in multiple layers.
As shown in FIG.3, in the solid-liquid separator according to another embodiment of the present invention, the rotary filters 262, 264 and 266 are provided in triple layers. The multi-layered porous rotary filters can more efficiently separate slurry into solids and liquid. When the pore sizes of the rotary filters are adjusted such that they are different from each other, respective solids included in the slurry can be separated according to the particle size thereof.
In another embodiment of the present invention, the triple-layered filters 262, 264 and 266 are configured such that the pore size is gradually decreased from the inner filter to the outer filter.
Meanwhile, a solid discharge pipe 18 for discharging solids therethrough is provided at the other side of the rotary filter assembly 260, that is, at the opposite side of the slurry introduction pipe 126 of the case 220.
The solid discharge pipe 18, through which solids of slurry are discharged by the vacuum suction force of the vacuum suction apparatus, is coaxial Iy formed at the other side of the rotary filter assembly 260.
Since the rotary filter assembly 260 is connected to a power transmission unit 268, driven by a driving motor (not shown), into which the solid discharge pipe 18 is inserted, when the driving motor is rotated, the driving motor transfers rotation force to the rotary filter assembly 260 through the power transmission unit 268, so that the rotary filter assembly 260 is also rotated, with the result that centrifugal force is generated, thereby separating solids and liquid from slurry using centrifugal force.
Further, a solid discharge hole 262a for separately discharging a very small amount of solids is formed between two outer rotary filters 264 and 262 of the triple-layered rotary filters 266, 264 and 262.
The very small amount of solids, filtered by the rotary filters 264 and 262, may be discharged to the outside through the solid discharge hole 262a, and may also be discharged outside through a solid discharge pipe 15 formed in the lower end of the case 220.
The reference number "225" designates a liquid blocking ring. The liquid blocking ring 225, which is formed on the inner surface of the case 220 at a predetermined height, serves to block the liquid of slurry such that the liquid is not mixed with the solids filtered by the rotary filter
262.
Meanwhile, the scraper 240 is adjacent to the rotary filters such that the solids adhered to the rotary filters are separated from the rotary filters, and is configured such that both ends of the scraper 240 are engaged with the rotary filter assembly 260 using bearings 245 and 265, and thus the scraper 240 is rotated together with the rotary filters.
Here, the scraper 240 is formed of a net, and includes protrusions 244 and 248, which are formed in the lengthwise direction of the scraper 240 and serve to separate the solids adhered to the rotary filters therefrom. Further, the scraper 240 is provided at the front end thereof with the rotary fan 242.
When the scraper 240 is coupled with the case 220, the rotary fan 242 is rotated by the slurry, which is supplied with rotation force by the fixed fan 222, so that an anti-rotation force is applied to the scraper 240, with the result that there is a difference in rotation speed between the scraper 240 and the rotary filters.
Therefore, due to the difference in rotation speed between the scraper 240 and the rotary filters, the protrusions 244 and 248 formed on the scraper 240 scrapes the rotary filters such that the solids adhered to the rotary filters can be separated from the rotary filters, even though the scraper 240 is also rotated.
Meanwhile, a vacuum suction apparatus (not shown) for generating vacuum suction force is connected to the solid discharge pipe 18 in order to suck the solids separated from the rotary filters by the scraper 240. In the solid-liquid separator configured in this manner, slurry is separated into solids and liquid by the centrifugal force generated due to the rotation of the rotary filter assembly 260, the scraper 240 separates the solids adhered to the rotary filters therefrom, and the vacuum suction apparatus generates suction force for sucking the solids separated from the rotary filters, so that liquid is discharged to the outside through the liquid discharge pipe 13, and solids are discharged thereto through the solid discharge pipe 18.
A method of separating slurry into solids and liquid according to the present invention includes: introducing slurry into a solid-liquid separator using a vacuum suction force; spraying the introduced slurry on a rotary filter installed in the solid-liquid separator and rotating at high speed; filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid by strong centrifugal force; removing the solids adhered to the rotary filter from the rotary filter using a scraper and simultaneously discharging the removed solids to the outside using the suction force of a vacuum suction apparatus; and discharging the liquid separated from the solids to the outside through an additional liquid discharge pipe.
Here, the step of filtering the sprayed slurry using the rotary
filter to separate the slurry into solids and liquid may be conducted multiple times.
Therefore, in the method of separating slurry into solids and liquid according to the present invention, slurry is thinly sprayed on the porous rotary filter, which rotates at high speed, so that the sprayed slurry is instantaneously separated into solids and liquid by strong centrifugal force, and the solids adhered to the rotary filter are removed from the rotary filter by the action of the scraper and are simultaneously discharged to the outside by vacuum suction force, with the result that the solids and liquid are separately discharged through individual pipes, thereby efficiently separating the slurry into solids and liquid.
FIG. 5 shows a solid-liquid separation system including the solid- liquid separator of the present invention. The solid-liquid separation system includes a solid-liquid separator 20, a slurry tank 10, supplying slurry into the solid-liquid separator 20, a flat solid-liquid separator 60 connected to a liquid discharge pipe 13 of the solid-liquid separator 20 and secondarily separating the slurry into solids and liquid, a liquid collection tank 70, collecting the liquid separated through the flat solid-liquid separator 60, and a solid collection tank 40, collecting the solids discharged from the solid-liquid separator 20 and the flat solid- liquid separator 60.
Here, it is preferred that an air suction pipe 12 for sucking air be formed at the front end of the vacuum solid-liquid separator 20, and that a liquid tank 30 for storing liquid be provided between the vacuum solid-liquid separator 20 and the flat solid-liquid separator 60.
In the solid-liquid separation system, the solids and liquid of slurry are sucked by the suction force of a vacuum suction apparatus 50.
For this, as shown in FIG. 5, the vacuum suction apparatus must communicate with other apparatuses through pipes. Here, as shown in FIG.4, the flat solid-liquid separator 60 includes multi-layered flat filters 62, 64 and 66, spray nozzles 61, 63 and 65 for spraying a suspension into the flat filters, and solid suction tubes 67, 68 and 69 for sucking the solids filtered by the flat filters using the vacuum suction force of the vacuum suction apparatus. In the flat solid-liquid separator 60, when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid-liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction pipes by the vacuum suction force of the vacuum suction apparatus.
Further, liquid collection plates 62a, 64a and 66a are provided under the flat filters 62, 64 and 66, respectively. When the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged
and collected onto the liquid collection plates, and the liquid collected on the liquid collection plates is discharged into a liquid collection tank 70.
Here, although not shown in FIG.4, the spray nozzles 61, 63 and 65 are connected to a suspension supply pipe 14, and the solid suction tubes 67, 68 and 69 are connected to a solid suction pipe 16.
Further, it is preferred that the spray nozzles 61, 63 and 65 and the solid suction tubes 67, 68 and 69 reciprocate while operating.
Here, the configuration for reciprocating the spray nozzle and solid suction tubes may be variously applied, and the present invention is not limited in regards thereto.
As such, in the flat solid-liquid separator 60, when a suspension is sprayed onto the flat filters through the spray nozzles 61, 63 and 65 and then passes through the flat filters 62, 64 and 66 due to gravity, the liquid of the suspension is discharged to the bottom of the flat solid- liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction tubes by the vacuum suction force of the vacuum suction apparatus. Further, in the flat solid-liquid separator 60, the flat filters are provided in multiple layers, thus separating a large amount of suspension into solids and liquid at a time.
Claims
[CLAIMS] [Claim 1]
A method of separating slurry into solids and liquid, comprising: introducing slurry into a solid-liquid separator using a vacuum suction force! spraying the introduced slurry into a rotary filter installed in the solid-liquid separator and rotating at high speed; filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid using a strong centrifugal force! removing the solids adhered to the rotary filter from the rotary filter using a scraper and simultaneously discharging the removed solids to the outside using the suction force of a vacuum suction apparatus; and discharging the liquid separated from the solids to the outside through an additional liquid discharge pipe.
[Claim 2]
The method of separating slurry into solids and liquid according to claim 1, wherein the step of filtering the sprayed slurry using the rotary filter to separate the slurry into solids and liquid is conducted multiple times.
[Claim 3]
A solid-liquid separator for separating slurry into solids and liquid, comprising: a case including a slurry introduction pipe for introducing slurry at one side thereof and a liquid discharge pipe for discharging liquid of slurry at a bottom side thereof; a rotary filter assembly including a solid discharge pipe for discharging solids of slurry provided at an opposite side of the slurry introduction pipe of the case, and a porous rotary filter for separating solids and liquid from slurry using a centrifugal force and discharging only the liquid through the liquid discharge pipe; a power transmission unit coaxial Iy connected to the solid discharge pipe such that the rotary filter assembly is rotated; a scraper adjacent to the rotary filter such that the solids adhered to the rotary filter are separated from the rotary filter; and a vacuum suction apparatus for generating a vacuum suction force connected to the solid discharge pipe in order to suck the solids separated from the rotary filter by the scraper.
[Claim 4]
The solid-liquid separator according to claim 3, wherein the slurry introduction pipe is provided therein with a fixed fan, and the fixed fan applies a rotation force to the introduced slurry.
[Claim 5]
The solid-liquid separator according to claim 3, wherein air suction holes are formed in one side of the case.
[Claim 6]
The solid-liquid separator according to claim 3, wherein the porous rotary filters have a cylindrical shape, and are multi-layered.
[Claim 7] The solid-liquid separator according to claim 6, wherein the multi- layered porous rotary filters are configured such that pore size is gradually decreased from the inner filter to the outer filter. [Claim 8]
The solid-liquid separator according to claim 3, wherein the scraper is formed of a net, and includes a protrusion which is formed in the lengthwise direction of the scraper and serves to separate the solids adhered to the rotary filter therefrom, and a rotary fan provided at the front end thereof. [Claim 9] The solid-liquid separator according to claim 8, wherein the scraper separates the solids adhered to the rotary filter therefrom while rotating. [Claim 10]
A solid-liquid separation system, comprising the solid-liquid separator of any one of claims 3 to 9. [Claim 11]
A solid-liquid separator, comprising: flat filters; spray nozzles for spraying suspension into the flat filters; and solid suction tubes for sucking the solids filtered by the flat filters using a vacuum suction force of the vacuum suction apparatus, wherein, when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters by gravity, the liquid of the suspension is discharged to the bottom of the flat solid-liquid separator, and the solids of the suspension are filtered and then sucked into the solid suction pipes by the vacuum suction force of the vacuum suction apparatus. [Claim 12]
The solid-liquid separator according to claim 11, wherein the flat filters are multi-layered, liquid collection plates are provided under the flat filters, respectively, and when the suspension, sprayed on the flat filters through the spray nozzles, passes through the flat filters due to gravity, the liquid of the suspension is discharged and collected onto the liquid collection plates, and the liquid collected on the liquid collection plates is discharged to a liquid collection tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0034357 | 2007-04-06 | ||
| KR1020070034357A KR100805335B1 (en) | 2007-04-06 | 2007-04-06 | Solid-liquid separator, apparatus and method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008123704A2 true WO2008123704A2 (en) | 2008-10-16 |
| WO2008123704A3 WO2008123704A3 (en) | 2008-12-18 |
Family
ID=39382649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2008/001918 WO2008123704A2 (en) | 2007-04-06 | 2008-04-04 | Solid-liquid separator, apparatus and method using the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100805335B1 (en) |
| WO (1) | WO2008123704A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504877A (en) * | 2022-03-04 | 2022-05-17 | 广东中浩水务投资有限公司 | Atomized water turbulence separation water purification device |
| CN117504416A (en) * | 2024-01-08 | 2024-02-06 | 成都金山化学试剂有限公司 | Solid-liquid separation equipment for chemical production |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101484189B1 (en) * | 2013-05-28 | 2015-01-20 | 한일원자력(주) | Method for preconditioning waste liquid and centrifugal separator used in the method |
| KR101366910B1 (en) * | 2013-07-19 | 2014-02-24 | 조영우 | Manufacturing method of uv pearl coated panel using curtain coating device |
| KR101392483B1 (en) | 2014-01-14 | 2014-05-08 | 주식회사 폴라리스이엔비 | Centrifugal separator |
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| JP2003024827A (en) * | 2001-07-17 | 2003-01-28 | Sharp Corp | Cyclone separator |
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| JP2004016843A (en) * | 2002-06-12 | 2004-01-22 | Mishima Kosan Co Ltd | Method and apparatus for separating liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4743997A (en) * | 1986-12-22 | 1988-05-10 | Carpenter Jr Roy B | High-voltage systems surge eliminators for transmission lines and distribution station protection |
| KR910004518A (en) * | 1989-08-16 | 1991-03-28 | 히로시 오나까 | Solid-liquid manure treatment method and device |
| KR200230001Y1 (en) | 2001-02-23 | 2001-07-03 | 전상근 | An excretions isolation device |
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2007
- 2007-04-06 KR KR1020070034357A patent/KR100805335B1/en not_active IP Right Cessation
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2008
- 2008-04-04 WO PCT/KR2008/001918 patent/WO2008123704A2/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003024827A (en) * | 2001-07-17 | 2003-01-28 | Sharp Corp | Cyclone separator |
| JP2003200082A (en) * | 2002-01-07 | 2003-07-15 | Sharp Corp | Cyclone separator |
| JP2003245505A (en) * | 2002-02-21 | 2003-09-02 | Tsurumi Mfg Co Ltd | Solid-liquid separator |
| JP2004016843A (en) * | 2002-06-12 | 2004-01-22 | Mishima Kosan Co Ltd | Method and apparatus for separating liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504877A (en) * | 2022-03-04 | 2022-05-17 | 广东中浩水务投资有限公司 | Atomized water turbulence separation water purification device |
| CN117504416A (en) * | 2024-01-08 | 2024-02-06 | 成都金山化学试剂有限公司 | Solid-liquid separation equipment for chemical production |
| CN117504416B (en) * | 2024-01-08 | 2024-04-02 | 成都金山化学试剂有限公司 | Solid-liquid separation equipment for chemical production |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100805335B1 (en) | 2008-02-20 |
| WO2008123704A3 (en) | 2008-12-18 |
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