WO2007119374A1 - 遠心分離機、円筒バスケットの口部材及び遠心分離方法 - Google Patents
遠心分離機、円筒バスケットの口部材及び遠心分離方法 Download PDFInfo
- Publication number
- WO2007119374A1 WO2007119374A1 PCT/JP2007/055225 JP2007055225W WO2007119374A1 WO 2007119374 A1 WO2007119374 A1 WO 2007119374A1 JP 2007055225 W JP2007055225 W JP 2007055225W WO 2007119374 A1 WO2007119374 A1 WO 2007119374A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylindrical
- basket
- cylindrical basket
- cake
- screen
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B7/04—Casings facilitating discharge
-
- 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
- B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type 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
- B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
Definitions
- the present invention relates to an extrusion-type centrifuge that extrudes and discharges a cake, a mouth member of a cylindrical basket used in the centrifuge, and a centrifugation method using these.
- centrifuges such as a coral type and an extrusion type.
- an extrusion-type centrifuge for example, a rotating cylindrical basket, a cylindrical screen fixed to the inner surface of the cylindrical basket, an extrusion mechanism for a cake formed on the inner surface of the cylindrical screen, and this And a cake discharge port extruded by an extrusion mechanism (see, for example, Patent Document 1) o
- a slurry-like object to be processed is put into a cylindrical basket, the cylindrical basket is rotated, and the filtrate is discharged to the outside through the cylindrical screen, so that the cake is placed on the inner surface of the cylindrical screen.
- the cake is extruded by an extrusion mechanism and discharged.
- the extrusion-type centrifuge thus formed is excellent in practical use, and is now used in various facilities.
- Patent Document 1 Japanese Patent No. 2936270
- a main problem to be solved by the present invention is to provide a centrifugal separator, a cylindrical basket member, and a centrifugal separation method that are excellent in filtration performance.
- a rotating cylindrical basket, a cylindrical screen fixed to the inner surface of the cylindrical basket, an extrusion mechanism for the cake formed on the inner surface of the cylindrical screen, and a discharge port for the cake extruded by the extrusion mechanism are provided. Centrifuge,
- a rotating cylindrical basket, a cylindrical screen fixed to the inner surface of the cylindrical basket, an extrusion mechanism for the cake formed on the inner surface of the cylindrical screen, and a discharge port for the cake extruded by the extrusion mechanism are provided.
- the centrifugal member having a small diameter portion having an inner diameter smaller than the inner diameter of the cylindrical screen.
- An outer cylindrical basket that rotates, an inner cylindrical basket disposed coaxially with the outer cylindrical basket, an outer cylindrical screen fixed to the inner surface of the outer cylindrical basket, and an inner cylindrical screen fixed to the inner surface of the inner cylindrical basket;
- the inner cylindrical basket An extrusion mechanism that extrudes the cake formed on the inner surface of the outer cylindrical screen and pushes out the cake formed on the inner surface of the inner cylindrical screen by retreating the inner cylindrical basket; And a discharge port for the cake extruded on the inner surface of the outer cylindrical screen by the extrusion mechanism,
- a centrifuge in which a mouth member is attached to an end of the extrusion side of at least one of the outer cylindrical basket and the inner cylindrical basket,
- the centrifugal member has a small diameter portion having an inner diameter smaller than a corresponding cylindrical screen inner diameter.
- the rear end of at least one of the small-diameter portions has an inclined surface with a smaller inner diameter on the extrusion side, and the inclined surface has an inclination angle of 5 to 40 ° with respect to the inner surface of the corresponding cylindrical screen.
- a cake receiving ring is provided for receiving cake discharged from the rotating cylindrical basket
- a tip end portion of the small-diameter portion is an inclined surface having an inner diameter that extends toward an extrusion destination side.
- a rotating cylindrical basket, a cylindrical screen fixed to the inner surface of the cylindrical basket, an extrusion mechanism for the cake formed on the inner surface of the cylindrical screen, and a discharge port for the cake extruded by the extrusion mechanism are provided. Used for a centrifuge,
- An opening member for a cylindrical basket wherein the cylindrical basket mouth member is attached to an end of the cylindrical basket at a push-out side, and has a small diameter portion smaller than an inner diameter of the cylindrical screen.
- a centrifuge method in which a cylindrical basket having a cylindrical screen fixed on its inner surface is rotated, and the cake formed on the inner surface of the cylindrical screen is extruded and discharged by this rotation.
- a centrifugal separation method comprising using a cylindrical basket having a small-diameter portion having an inner diameter smaller than the inner diameter of the cylindrical screen at an end portion on the extrusion side.
- centrifugal separator a centrifugal separator, a cylindrical basket member, or a centrifugal separation method having excellent filtration performance is obtained.
- FIG. 1 is a cross-sectional side view of a centrifuge.
- FIG. 2 is a front sectional view of a centrifuge.
- FIG. 3 An example of an end ring.
- FIG. 4 An example of a form of end ring.
- FIG. 5 is a graph showing test results.
- a cylindrical casing 1 fixed to the ground is provided at the front of the apparatus.
- the cylindrical casing 1 has an outer cylinder.
- a basket 11 and an inner cylindrical basket 12 disposed coaxially with the outer cylindrical basket 11 are provided.
- the outer cylindrical screen 11A is fixed to the inner surface of the outer cylindrical basket 11, and the inner cylindrical screen 12A force is fixed to the inner surface of the inner cylindrical basket 12.
- the outer cylindrical socket 11 is integrally joined with a holding plate 11B, which is bolted to the tip of the main shaft 30, by a bolt or the like.
- the main shaft 30 rotates when the output from a motor or the like (not shown) is transmitted to the pulley 33. This rotation causes the outer cylindrical basket 11 and the outer cylindrical screen 11 A to rotate in the circumferential direction.
- a filtrate outlet 6 is provided on the side surface of the cylindrical casing 1. From the filtrate outlet 6, the filtrate (mother liquid) filtered by centrifugation by the rotation of the outer cylindrical basket 11 and the inner cylindrical basket 12 and the cleaning liquid supplied at the time of cleaning are discharged.
- an extrusion shaft 31 is fitted into the main shaft 30 with play.
- the rear end portion of the extrusion shaft 31 is integrated with a piston 32 that can move back and forth.
- a holding plate 12B is bolted to the tip of the extrusion shaft 31.
- An inner cylindrical basket 12 is fixed to and integrated with the holding plate 12B by a bolt or the like.
- An extrusion plate 13 is disposed in the inner cylindrical basket 12.
- the pushing plate 13 is fixed to a holding plate 11B holding the outer cylindrical basket 11 via a plurality of support arms 11C, 11C.
- the plurality of support arms 11C, 11C may Penetrate through the holding plate 12B with play.
- the main pushing plate 13 functions as a plate for pushing the cake formed on the inner surface of the inner cylindrical screen 12A forward when the inner cylindrical basket 12 is moved backward by the piston 32.
- a distributor plate 14 is bolted to the extrusion plate 13.
- the distributor plate 14 functions as a plate for dispersing the slurry, which is the object to be processed, supplied from the slurry supply pipe 2.
- a cleaning liquid supply pipe 15 for supplying a cleaning liquid such as distilled water is provided on the cylindrical casing 1 from the front side.
- the cleaning liquid supply pipe 15 is provided with a plurality of cleaning nozzles 15A, 15A. From the cleaning nozzles 15A, 15 ⁇ , the cleaning liquid is sprayed toward the inner surface of the outer cylindrical basket 11 and the inner cylindrical basket 12 (including the outer cylindrical screen 11A and the inner cylindrical screen 12A). Of this cleaning solution The spraying is performed for cake washing. The washing liquid sprayed for washing the cake is discharged from the filtrate outlet 6.
- the slurry as the object to be processed is supplied from the slurry supply pipe 2 toward the distributor plate 14.
- the outer cylindrical basket 11 and the outer cylindrical screen 11A rotate, and the inner cylindrical basket 12 and the inner cylindrical screen 12A also rotate in the same direction.
- the extrusion shaft 31 is moved back and forth by the piston 32.
- the piston 32 moves back and forth, the retracted inner cylindrical basket 12 moves forward, and is attached to the end of the inner end of the inner cylindrical basket 12 to be pushed out. 12 C force inner surface of the outer cylindrical screen 11A Move forward. With this advance, the cake accumulated on the inner surface of the outer cylindrical screen 11A is pushed forward and discharged into the cake receiving ring 16.
- the cake receiving ring 16 is positioned ahead of the outer cylindrical basket 11 in order to receive the portion pushed forward of the cake accumulated on the inner surface of the outer cylindrical screen 11A.
- the cake receiving ring 16 is separate from the outer cylindrical basket 11, and is fixed to the inner surface of the cylindrical casing 1 via a cake receiving ring bracket 16A. Therefore, the cake receiving ring 16 does not rotate even when the outer cylindrical basket 11 rotates.
- the cake receiving ring 16 has a ring-shaped member with a substantially half-cylindrical cross section.
- a cylindrical discharge pipe 16B is connected to a part of the ring-shaped member. The cake that receives the normal force due to the rotation of the outer cylindrical basket 11 swivels in a ring shape within the ring-shaped member, and is finally discharged from the discharge pipe 16B, which is the cake discharge port.
- the inner cylindrical socket 12 is retracted to the original position. With this retreat, the peripheral end portion of the push-out plate 13 described above advances relatively on the inner surface of the inner cylindrical basket 12. By this advance, a part of the cake formed on the inner surface of the inner cylindrical screen 12A is pushed out onto the inner surface of the outer cylindrical basket 11 (transition).
- solid-liquid separation (filtration) of the slurry as the object to be processed is performed through the inner cylindrical screen 12A by the rotation of the inner cylindrical basket 12.
- the cake pushed onto the inner surface of the outer cylindrical basket 11 is also covered by the outer cylindrical screen 11A by the rotation of the outer cylindrical basket 11.
- Solid-liquid separation (filtration) of the slurry that is the processed product is performed.
- the filtrate filtered through the cylindrical screens 11A and 12A is discharged from the filtrate outlet 6 through the through holes of the cylindrical gaskets 11 and 12.
- a multi-stage (two-stage) extrusion centrifuge having an outer cylindrical socket 11 and an inner cylindrical socket 12 arranged coaxially therewith is described.
- the invention is not limited to this.
- a single-stage extrusion centrifuge having only a single-stage cylindrical basket may be used.
- a small-diameter portion having an inner diameter smaller than the inner diameter of the outer cylindrical screen 11A or the inner cylindrical screen 12A is provided at the push-out side end (tip portion) of the outer cylindrical basket 11 or the inner cylindrical basket 12. It is provided.
- the small-diameter portion can also be configured by deforming the push-out side end itself of the outer cylindrical basket 11 or the inner cylindrical basket 12.
- the outer cylindrical socket 11 or the inner cylindrical basket 12 is constructed by attaching a powerful mouth member such as a ring-shaped base having a small diameter portion to the pushing end side of the inner cylindrical basket 12. This configuration is economical because it requires almost no change to existing equipment.
- the small-diameter portion to which force is applied is effective even if it is provided in the outer cylindrical basket 11 and the inner cylindrical basket 12, but it is more effective if provided in both.
- the end ring 21 serving as a mouth member having a small diameter portion is attached only to the pushing end side end portion of the outer cylindrical basket 11. Therefore, the end ring 21 will be described in detail below.
- the attachment method of the end ring 21 is not particularly limited.
- it can be fixed by a fixing means such as a bolt.
- the conventional end ring 121 is made to be the same horizontal as the inner surface of the outer cylindrical screen 11A. That is, the conventional end ring 121 has the same inner diameter as the inner diameter of the outer cylindrical screen 11 A! /.
- the end ring 21 of the present embodiment is inward of the inner surface of the outer cylindrical screen 11A. It has a protruding small diameter part. That is, the end ring 21 of the present embodiment has a small diameter portion having an inner diameter smaller than the inner diameter of the outer cylindrical screen 11A. Therefore, when the retracted inner cylindrical basket 12 moves forward and the pushing portion 12C provided at the end of the pushing end advances on the inner surface (inner peripheral surface) of the outer cylindrical screen 11A, the outer cylindrical basket 12C moves forward. The cake deposited on the inner surface of the screen 11A moves to the extrusion side (discharge side) while receiving the resistance of the end ring 21 having a small diameter.
- the cake receives a centrifugal force from the inside, receives an extrusion force from the rear (extruded side), and receives resistance from the end ring 21 small-diameter portion from the front (extruded side).
- the filtrate resulting from this compression is filtered through the outer cylindrical screen 11A. Therefore, the filtration performance is improved as compared with the case of using only the centrifugal force.
- the end ring 21 having the small-diameter portion of the present embodiment can be attached to the end portion on the push-out side of the inner cylindrical basket 12 as well. When this attachment is performed, the compression effect of the cake on the inner surface of the inner cylindrical screen 12A when the inner cylindrical basket 12 retracts is improved.
- the small diameter portion of the end ring 21 does not have a step 21e having a smaller inner diameter on the extrusion side as shown in (2) of FIG. More preferably, does not have a step 21f having a large inner diameter. If the step 21e or the step 21f is provided, the cake may remain in this portion.
- the small-diameter portion of the end ring 21 has at least a rear end portion force, preferably a total force, as shown in FIG. 3 (2).
- the ⁇ force is preferably 5 ° or less, and more preferably 5 to 40 °. If the inclination angle ⁇ is too small, the effect of improving the filtration performance cannot be obtained. On the other hand, if the inclination angle ⁇ is too large, problems such as the cake remaining without being discharged and a large load applied to the piston 32 for reciprocating the inner cylindrical basket 12 occur.
- the above description is not limited to the force plane described for the case where the inner surface of the small diameter portion of the end ring 21 is a plane.
- it may be a concave curved surface 21b as shown in (3) of FIG. 3 or a convex curved surface 21c as shown in (4) of FIG.
- end ring A horizontal surface 21d may be present on the inner surface of the 21 small diameter portion as shown in FIG.
- the tip of the small diameter portion of the end ring 21 is preferably inclined surfaces 21g and 21h having a larger inner diameter on the extrusion side. According to this form, the filtered cake is smoothly extruded (discharged) toward the cake receiving ring 16.
- the cake receiving ring 16 When the cake receiving ring 16 is provided as in the present embodiment, it is also preferable to attach the blade 22 to the end ring 21 so as to be positioned in the cake receiving ring 16 as shown in FIG. If the blades 22 are attached, the cake can be prevented from accumulating in the cake receiving ring 16.
- FIG. 5 shows that the cake moisture content (wt% WB) increases as the slurry supply flow rate increases.
- the present invention relates to an extrusion-type centrifuge that extrudes and discharges a cake, and the centrifuge It can be applied as a mouthpiece of a cylindrical basket used in the present invention, and as a centrifugal separation method using these.
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- Centrifugal Separators (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007800134822A CN101421046B (zh) | 2006-04-14 | 2007-03-15 | 离心分离机、圆筒转鼓的口部件以及离心分离方法 |
| KR1020087027909A KR101468600B1 (ko) | 2006-04-14 | 2008-11-14 | 원심 분리기 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006112260A JP4548791B2 (ja) | 2006-04-14 | 2006-04-14 | 遠心分離機 |
| JP2006-112260 | 2006-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007119374A1 true WO2007119374A1 (ja) | 2007-10-25 |
Family
ID=38609170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/055225 Ceased WO2007119374A1 (ja) | 2006-04-14 | 2007-03-15 | 遠心分離機、円筒バスケットの口部材及び遠心分離方法 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4548791B2 (ja) |
| KR (1) | KR101468600B1 (ja) |
| CN (1) | CN101421046B (ja) |
| TW (1) | TWI382876B (ja) |
| WO (1) | WO2007119374A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773171A (zh) * | 2012-08-07 | 2012-11-14 | 江苏华大离心机股份有限公司 | 活塞推料离心机中的液压式推料驱动装置 |
| WO2019142401A1 (ja) * | 2018-01-17 | 2019-07-25 | 月島機械株式会社 | 押出型遠心分離機およびその運転方法 |
| SE543866C2 (en) * | 2019-03-04 | 2021-08-17 | Kennametal Inc | Centrifuge feed pipes and associated method |
| WO2023089920A1 (ja) * | 2021-11-19 | 2023-05-25 | 月島機械株式会社 | スラリの脱水乾燥システム及び脱水乾燥方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201300292A (zh) * | 2011-06-28 | 2013-01-01 | wei-ling Chen | 可拆裝的袋體氣閥及其使用方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505413B1 (ja) * | 1969-09-10 | 1975-03-04 | ||
| JP2006061859A (ja) * | 2004-08-27 | 2006-03-09 | Tsukishima Kikai Co Ltd | 遠心分離機 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328925B2 (ja) * | 1973-05-18 | 1978-08-17 | ||
| DE2909716A1 (de) * | 1979-03-13 | 1980-09-18 | Krauss Maffei Ag | Schubzentrifuge |
| US7025211B2 (en) * | 2003-04-16 | 2006-04-11 | Ferrum Ag | Double pusher centrifuge |
-
2006
- 2006-04-14 JP JP2006112260A patent/JP4548791B2/ja active Active
-
2007
- 2007-03-15 WO PCT/JP2007/055225 patent/WO2007119374A1/ja not_active Ceased
- 2007-03-15 CN CN2007800134822A patent/CN101421046B/zh active Active
- 2007-04-14 TW TW096113195A patent/TWI382876B/zh active
-
2008
- 2008-11-14 KR KR1020087027909A patent/KR101468600B1/ko active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505413B1 (ja) * | 1969-09-10 | 1975-03-04 | ||
| JP2006061859A (ja) * | 2004-08-27 | 2006-03-09 | Tsukishima Kikai Co Ltd | 遠心分離機 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773171A (zh) * | 2012-08-07 | 2012-11-14 | 江苏华大离心机股份有限公司 | 活塞推料离心机中的液压式推料驱动装置 |
| WO2019142401A1 (ja) * | 2018-01-17 | 2019-07-25 | 月島機械株式会社 | 押出型遠心分離機およびその運転方法 |
| JP2019122923A (ja) * | 2018-01-17 | 2019-07-25 | 月島機械株式会社 | 押出型遠心分離機およびその運転方法 |
| SE543866C2 (en) * | 2019-03-04 | 2021-08-17 | Kennametal Inc | Centrifuge feed pipes and associated method |
| US11318480B2 (en) | 2019-03-04 | 2022-05-03 | Kennametal Inc. | Centrifuge feed pipes and associated apparatus |
| WO2023089920A1 (ja) * | 2021-11-19 | 2023-05-25 | 月島機械株式会社 | スラリの脱水乾燥システム及び脱水乾燥方法 |
| JP2023075618A (ja) * | 2021-11-19 | 2023-05-31 | 月島ホールディングス株式会社 | スラリの脱水乾燥システム及び脱水乾燥方法 |
| JP7402853B2 (ja) | 2021-11-19 | 2023-12-21 | 月島機械株式会社 | スラリの脱水乾燥システム及び脱水乾燥方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4548791B2 (ja) | 2010-09-22 |
| CN101421046A (zh) | 2009-04-29 |
| TW200800401A (en) | 2008-01-01 |
| CN101421046B (zh) | 2013-06-26 |
| KR101468600B1 (ko) | 2014-12-04 |
| KR20080113282A (ko) | 2008-12-29 |
| JP2007283193A (ja) | 2007-11-01 |
| TWI382876B (zh) | 2013-01-21 |
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