CA2034918A1 - Rotational member of a centrifuge - Google Patents
Rotational member of a centrifugeInfo
- Publication number
- CA2034918A1 CA2034918A1 CA 2034918 CA2034918A CA2034918A1 CA 2034918 A1 CA2034918 A1 CA 2034918A1 CA 2034918 CA2034918 CA 2034918 CA 2034918 A CA2034918 A CA 2034918A CA 2034918 A1 CA2034918 A1 CA 2034918A1
- Authority
- CA
- Canada
- Prior art keywords
- rotational member
- liquids
- solids
- screen
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 33
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 230000000717 retained effect Effects 0.000 claims abstract description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000237074 Centris Species 0.000 description 1
- 101150014691 PPARA gene Proteins 0.000 description 1
- 240000004543 Vicia ervilia Species 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 101150112154 outJ gene Proteins 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/06—Arrangement of distributors or collectors in centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/16—Sieves or filters
Landscapes
- Centrifugal Separators (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improvement in a rotational member of a centrifuge.
The rotational member has a top, an open bottom, and a circumferential frame which extends between the top and the bottom. A screen is mounted on the circumferential frame. A
deflector is centrally positioned adjacent the top of the rotational member such that liquids flowing into the hollow central cavity of the rotational member are deflected by the deflector toward the screen. Solids are retained within the hollow central cavity by the screen and liquids pass through the screen striking sidewalls of a containment housing and flowing down the side walls to a liquids outlet. The solids pass by force of gravity along the screen to the open bottom of the rotational member which serves as a solids outlet.
An improvement in a rotational member of a centrifuge.
The rotational member has a top, an open bottom, and a circumferential frame which extends between the top and the bottom. A screen is mounted on the circumferential frame. A
deflector is centrally positioned adjacent the top of the rotational member such that liquids flowing into the hollow central cavity of the rotational member are deflected by the deflector toward the screen. Solids are retained within the hollow central cavity by the screen and liquids pass through the screen striking sidewalls of a containment housing and flowing down the side walls to a liquids outlet. The solids pass by force of gravity along the screen to the open bottom of the rotational member which serves as a solids outlet.
Description
The preserlt inventic~rl relates to an improvement in a centriuge.
BACKGROUND OF THE INVENTION
Centr;fu~es are machines which -use centrifugal force to separate particles of varying density, or draw off moisture. Centrifuges consis-t of a housing having side walls, an liquids inlet and a iiquids outlet. A
rotational member is rotatably mounted in the housing.
10 ~enerally, the rotation member has a hollow central cavity which communicates with the inle-t whereby liquids are fed from the inle-t into the rotational member.
Drive means are coupled with the rotational member such that the rotational member is rotated at high speed 15 (over 2000 R.P.M.) whereby liquids are propelled against the side walls of the housing by centrifugal force and flow down the side walls of the housing to the liquids outlet.
M~t centri~uyeH are incapable of harldling liquids which have a high solids content.
SUMMARY OF TH~ INVENTION
What is required is a centrifuge which is capable 25 f handling liquids with a high solids content.
According to the present invention there is provided an improvement in a centrifuge. That part of the present invention which is ~nown in the prior art 30 will first be described. A housing is provided having side walls, an liquids inlet and a liquids outlet. A
rotational member is rotatably mounted in the housing.
The rotation member has a hollow central cavity which 35 communicates with the inlet whereby liquids are fed from the inlet into the rotational member. Drive means are 2~3~ 8 coupled with the rotational member such that the rotational member is rotated at high speed whereby l;quids are propelled ayainst the side w~lls of the housing by centrifugal force and flow down the side wall~ o the housirlg to the liquids outlet.
The improvement is comprised of modifications to the rota-Liorlal member. The rotational member has a top an open bott:om, and a circumferential frame which 10 extends between the top and the bottom. A screen is mounted on the circumferential frame. A deflector is centrally positioned adjacent the top of the rotational member sucn that liquids flowing from the inlet into the hollow central cavity of the rotational member are 15 deflected by the deflector toward the screen. Solids are retained within the hollow central cavity by the ~creen and liquids pass through the screen striking the sidewalls of the hou~irlg arld flowiny down the s:ide wall~
to th~ liquids au~let. T~ oJid~ pa~ ~y force ~7f ~r~vity ~l~ng t~l~ ffcr~erl -t~ the oper~ bc~ttom ~f the rotational member which ~erve~ as a ~olids outlet.
T~l:i~ conf iguratiorl Oe centrifuge permits the continuou~ flow througn of liquids having a high solids 25 content Although heneficial results may be obtai-rled through the u~e of the improved centrifuge as de~cribed, even more beneficial results may be ob~ained is a further improvement is added to prevent the buildup of solids The further improvement consists of the 30 addition of a stationary solids grater which extends into the bottom of the rotational member The solid~
grater has a rough surface with a plurality af openings whereby solids are ground down in-to parLiculate ~i~e~
36 which pass through the opening~ and drop by force of gravity through the open bottom o the rotational member 2~3~91~
which serves as the solids outlet.
Al-though beneficial results will be obtained through the use of the improved centrifuge as described, ,~ ;t: .is preferre(1 that the rotat;onal member being ~rlera]ly conical in shape, the frame decr-easing i~
c.ircumference from the top to the bottom. This shape of rotational member acsists in directing solids toward the 801 ids grater.
BRI~F DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the followint3 description in which reference is made to the appended drawings, 15 wherein FIGURE 1 i~ a lonyitudinal section view of a centrifuge constructed in accordance with the teachings ~f ~ E~r~etlt invention~
z~ DETAILED D~SCR~PTION 0~ TH~ PRE~RR~D ~MBODIM~NT
Th~ preerred embodime~lt, a centrifuge generally 1derl-tifi~d by refererlce nl~meral 10, will now be deffcribed with reference to FIGUR~ 1.
That part of centrifuge 10 which is known in the prior art will first be described. A housin(3 12 is provided having side walls 14, an liquids inlet 16 and a liquids outlet 18. A rotational member 20 i5 rotatably mounted in housing 12. Rotation member 20 has a hollow 30 central cavity 23 which communicates with inlet 16 whereby liquids are fed from inlet 16 into rotational member 20. Drive means, in the forM of motor 21, are coupled by a belt 22 and a pulley 24 with rotational 35 member 20 such that rotational membt~r 20 i~ rotated at high speed whereby liquids are propelled again~t ~ide . . , 2 0 ~
walls 14 of housirlg 12 by centrifugal force and flow down side walls 14 of housing 12 to liquids outlet 18.
The improvement consists of modifications to rotational member 20. Referring to FIGURE 1, ro-tational member ~0 has a top 26, an open bottom 28, and a yenerally oniGa~ cir~cllmfererltiai frarne 30 which extends between ~op 26 and bott-om 2B. A screen 32 is mounted on circumfererltial frame 30. A deflector 34 is centrally 10 positioned within hollow central cavity 23 adjacent top 26 of rotational member 20. A stationary solids ~rater 36 extends into bottom 28 of rotational member 20. The solids grater has a rough ex-terior ~urface 38 with a plurality of openings 40. Solids grater 36 is connected 15 to a solids transmission pipe 31 which leads to a solids transmission outlet 35. A plurality of bearings 42 are po~itioned wherever rotational member 20 is in communica~ion with housing 12. Deflector 34 is ~uspended within hollow central cavity 23 by a shaft 44.
20 Shaft 44 ha~ a plurality :irlclir1ed vane~ 46.
T~le u~e ~nd operatiotl of cerltrift1ge 10 will now be de~cribed with reference to FIGURE 1. Centrif~ge 10 is intended to handle a corltinuous flow of liquid which has 25 a high ~olids content, An example of 5uch arl application i~ in the treatment of sewage sludye. The definition o what constitutes a hiyh ~olids cosltent will vary with the application. In order to maintain the desired continuous flow a balance must be obtained 30 between the flow rate and the type of screen used.
Continuous flow is desirable but is not an essential part of the invention. Liquids flow rom inlet 16 into hollow central cavity 23 of rotatiorlal member 20.
35 Inclined vanes 46 are positiorled in the flow path and serve as impellers to force the incoming liq~id toward 2~3~18 s deflector 34. As the l;quids str;ke deflector 34 tney are deflected toward screen 32. Solids are retained withirl hollow cerltral cavity 23 by screen 32 and liquids pas8 through screen 32. Liquids which pass through 5 screerl 32 strike siclewalls 14 of ho~ inc3 12 and flow down ~3ide wa].l~ 14 to liquid~ outlet 18. Solids re-tained wit~lin hollow central cavity 23 pass by force of gravity along screen 32 to soli,ds grater 36. Solids grater 36 opera-tes in a similar fas'rlion to household 10 graters used to grate cheese or vegetables. Solids in contact with rough ex-terior surface 38 are ground down into particulate sizes which pass through openings 40.
The solids then drop by force of gravity through open bottom 28 of rotational member 20 which serves as a 15 solids outlet~ Extending through bo-ttom 28 and communicating wit'rl ~olids grater 36 is solids tran~miss,iorl pipe 31 which leads to solids transmission outJ,et 35.
2~ l~ wil.l b~ ~ppar~rlt to ~}le ~killea ir~ the ar-t that the improved centrifuge, a~ de~cribed, i~ capable of harl/qlirl~ liquids with a nigh soliA~ conteTIt, It will also ~e apparent to one skilled in the art that modiications can be made to the emhodiment illustrated 25 without departing from the spirit and scope of the invention as defined by the claim~, ' 30 .
BACKGROUND OF THE INVENTION
Centr;fu~es are machines which -use centrifugal force to separate particles of varying density, or draw off moisture. Centrifuges consis-t of a housing having side walls, an liquids inlet and a iiquids outlet. A
rotational member is rotatably mounted in the housing.
10 ~enerally, the rotation member has a hollow central cavity which communicates with the inle-t whereby liquids are fed from the inle-t into the rotational member.
Drive means are coupled with the rotational member such that the rotational member is rotated at high speed 15 (over 2000 R.P.M.) whereby liquids are propelled against the side walls of the housing by centrifugal force and flow down the side walls of the housing to the liquids outlet.
M~t centri~uyeH are incapable of harldling liquids which have a high solids content.
SUMMARY OF TH~ INVENTION
What is required is a centrifuge which is capable 25 f handling liquids with a high solids content.
According to the present invention there is provided an improvement in a centrifuge. That part of the present invention which is ~nown in the prior art 30 will first be described. A housing is provided having side walls, an liquids inlet and a liquids outlet. A
rotational member is rotatably mounted in the housing.
The rotation member has a hollow central cavity which 35 communicates with the inlet whereby liquids are fed from the inlet into the rotational member. Drive means are 2~3~ 8 coupled with the rotational member such that the rotational member is rotated at high speed whereby l;quids are propelled ayainst the side w~lls of the housing by centrifugal force and flow down the side wall~ o the housirlg to the liquids outlet.
The improvement is comprised of modifications to the rota-Liorlal member. The rotational member has a top an open bott:om, and a circumferential frame which 10 extends between the top and the bottom. A screen is mounted on the circumferential frame. A deflector is centrally positioned adjacent the top of the rotational member sucn that liquids flowing from the inlet into the hollow central cavity of the rotational member are 15 deflected by the deflector toward the screen. Solids are retained within the hollow central cavity by the ~creen and liquids pass through the screen striking the sidewalls of the hou~irlg arld flowiny down the s:ide wall~
to th~ liquids au~let. T~ oJid~ pa~ ~y force ~7f ~r~vity ~l~ng t~l~ ffcr~erl -t~ the oper~ bc~ttom ~f the rotational member which ~erve~ as a ~olids outlet.
T~l:i~ conf iguratiorl Oe centrifuge permits the continuou~ flow througn of liquids having a high solids 25 content Although heneficial results may be obtai-rled through the u~e of the improved centrifuge as de~cribed, even more beneficial results may be ob~ained is a further improvement is added to prevent the buildup of solids The further improvement consists of the 30 addition of a stationary solids grater which extends into the bottom of the rotational member The solid~
grater has a rough surface with a plurality af openings whereby solids are ground down in-to parLiculate ~i~e~
36 which pass through the opening~ and drop by force of gravity through the open bottom o the rotational member 2~3~91~
which serves as the solids outlet.
Al-though beneficial results will be obtained through the use of the improved centrifuge as described, ,~ ;t: .is preferre(1 that the rotat;onal member being ~rlera]ly conical in shape, the frame decr-easing i~
c.ircumference from the top to the bottom. This shape of rotational member acsists in directing solids toward the 801 ids grater.
BRI~F DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the followint3 description in which reference is made to the appended drawings, 15 wherein FIGURE 1 i~ a lonyitudinal section view of a centrifuge constructed in accordance with the teachings ~f ~ E~r~etlt invention~
z~ DETAILED D~SCR~PTION 0~ TH~ PRE~RR~D ~MBODIM~NT
Th~ preerred embodime~lt, a centrifuge generally 1derl-tifi~d by refererlce nl~meral 10, will now be deffcribed with reference to FIGUR~ 1.
That part of centrifuge 10 which is known in the prior art will first be described. A housin(3 12 is provided having side walls 14, an liquids inlet 16 and a liquids outlet 18. A rotational member 20 i5 rotatably mounted in housing 12. Rotation member 20 has a hollow 30 central cavity 23 which communicates with inlet 16 whereby liquids are fed from inlet 16 into rotational member 20. Drive means, in the forM of motor 21, are coupled by a belt 22 and a pulley 24 with rotational 35 member 20 such that rotational membt~r 20 i~ rotated at high speed whereby liquids are propelled again~t ~ide . . , 2 0 ~
walls 14 of housirlg 12 by centrifugal force and flow down side walls 14 of housing 12 to liquids outlet 18.
The improvement consists of modifications to rotational member 20. Referring to FIGURE 1, ro-tational member ~0 has a top 26, an open bottom 28, and a yenerally oniGa~ cir~cllmfererltiai frarne 30 which extends between ~op 26 and bott-om 2B. A screen 32 is mounted on circumfererltial frame 30. A deflector 34 is centrally 10 positioned within hollow central cavity 23 adjacent top 26 of rotational member 20. A stationary solids ~rater 36 extends into bottom 28 of rotational member 20. The solids grater has a rough ex-terior ~urface 38 with a plurality of openings 40. Solids grater 36 is connected 15 to a solids transmission pipe 31 which leads to a solids transmission outlet 35. A plurality of bearings 42 are po~itioned wherever rotational member 20 is in communica~ion with housing 12. Deflector 34 is ~uspended within hollow central cavity 23 by a shaft 44.
20 Shaft 44 ha~ a plurality :irlclir1ed vane~ 46.
T~le u~e ~nd operatiotl of cerltrift1ge 10 will now be de~cribed with reference to FIGURE 1. Centrif~ge 10 is intended to handle a corltinuous flow of liquid which has 25 a high ~olids content, An example of 5uch arl application i~ in the treatment of sewage sludye. The definition o what constitutes a hiyh ~olids cosltent will vary with the application. In order to maintain the desired continuous flow a balance must be obtained 30 between the flow rate and the type of screen used.
Continuous flow is desirable but is not an essential part of the invention. Liquids flow rom inlet 16 into hollow central cavity 23 of rotatiorlal member 20.
35 Inclined vanes 46 are positiorled in the flow path and serve as impellers to force the incoming liq~id toward 2~3~18 s deflector 34. As the l;quids str;ke deflector 34 tney are deflected toward screen 32. Solids are retained withirl hollow cerltral cavity 23 by screen 32 and liquids pas8 through screen 32. Liquids which pass through 5 screerl 32 strike siclewalls 14 of ho~ inc3 12 and flow down ~3ide wa].l~ 14 to liquid~ outlet 18. Solids re-tained wit~lin hollow central cavity 23 pass by force of gravity along screen 32 to soli,ds grater 36. Solids grater 36 opera-tes in a similar fas'rlion to household 10 graters used to grate cheese or vegetables. Solids in contact with rough ex-terior surface 38 are ground down into particulate sizes which pass through openings 40.
The solids then drop by force of gravity through open bottom 28 of rotational member 20 which serves as a 15 solids outlet~ Extending through bo-ttom 28 and communicating wit'rl ~olids grater 36 is solids tran~miss,iorl pipe 31 which leads to solids transmission outJ,et 35.
2~ l~ wil.l b~ ~ppar~rlt to ~}le ~killea ir~ the ar-t that the improved centrifuge, a~ de~cribed, i~ capable of harl/qlirl~ liquids with a nigh soliA~ conteTIt, It will also ~e apparent to one skilled in the art that modiications can be made to the emhodiment illustrated 25 without departing from the spirit and scope of the invention as defined by the claim~, ' 30 .
Claims (3)
1. An improvement in a centrifuge consisting of a housing having side walls, and liquids inlet and a liquids outlet; a rotational member rotatably mounted in the housing, the rotation member having a hollow central cavity which communicates with the inlet whereby liquids are fed from the inlet into the rotational member; drive means coupled with the rotational member such that the rotational member is rotated at high speed whereby liquids are propelled against the side walls of the housing by centrifugal force and flow down the side walls of the housing to the liquids outlet, the improvement comprising:
the rotational member having a top, and open bottom, and a circumferential frame which extends between the top and the bottom, a screen being mounted on the circumferential frame, and a deflector being centrally positioned adjacent the top of the rotational member such that liquids flowing from the inlet into the hollow central cavity of the rotational member are deflected by the deflector toward the screen whereby solids are retained within the hollow central cavity by the screen and liquids pass through the screen striking the sidewalls of the housing and flowing down the side walls to the liquids outlet, the solids passing by force of gravity along the screen to the open bottom of the rotational member which serves as a solids outlet.
the rotational member having a top, and open bottom, and a circumferential frame which extends between the top and the bottom, a screen being mounted on the circumferential frame, and a deflector being centrally positioned adjacent the top of the rotational member such that liquids flowing from the inlet into the hollow central cavity of the rotational member are deflected by the deflector toward the screen whereby solids are retained within the hollow central cavity by the screen and liquids pass through the screen striking the sidewalls of the housing and flowing down the side walls to the liquids outlet, the solids passing by force of gravity along the screen to the open bottom of the rotational member which serves as a solids outlet.
2. The improved centrifuge as defined in Claim 1, having a stationary solids grater extending into the bottom of the rotational member, the solids grater having a rough surface with a plurality of openings whereby solids are ground down into particulate sizes which pass through the openings and drop by force of gravity through the open bottom of the rotational member which serves as the solids outlet.
3. The improved centrifuge as defined in Claim 2, the rotational member being generally conical in shape, the frame decreasing in circumference from the top to the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2034918 CA2034918A1 (en) | 1991-01-25 | 1991-01-25 | Rotational member of a centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2034918 CA2034918A1 (en) | 1991-01-25 | 1991-01-25 | Rotational member of a centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2034918A1 true CA2034918A1 (en) | 1992-07-26 |
Family
ID=28048199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2034918 Abandoned CA2034918A1 (en) | 1991-01-25 | 1991-01-25 | Rotational member of a centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2034918A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19540488C2 (en) * | 1995-10-20 | 1999-08-19 | Schatz | Method and device for separating suspensions loaded with solids |
| WO2000050150A1 (en) * | 1999-02-24 | 2000-08-31 | Schmidt Gerhard R | Centrifugal filtration apparatus |
| CN111545356A (en) * | 2020-05-12 | 2020-08-18 | 安徽省益农化工有限公司 | Pesticide dregs of a decoction filter equipment |
-
1991
- 1991-01-25 CA CA 2034918 patent/CA2034918A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19540488C2 (en) * | 1995-10-20 | 1999-08-19 | Schatz | Method and device for separating suspensions loaded with solids |
| WO2000050150A1 (en) * | 1999-02-24 | 2000-08-31 | Schmidt Gerhard R | Centrifugal filtration apparatus |
| CN111545356A (en) * | 2020-05-12 | 2020-08-18 | 安徽省益农化工有限公司 | Pesticide dregs of a decoction filter equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |