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WO2007032605A1 - Séparateur solide-liquide à vis - Google Patents

Séparateur solide-liquide à vis Download PDF

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Publication number
WO2007032605A1
WO2007032605A1 PCT/KR2006/003050 KR2006003050W WO2007032605A1 WO 2007032605 A1 WO2007032605 A1 WO 2007032605A1 KR 2006003050 W KR2006003050 W KR 2006003050W WO 2007032605 A1 WO2007032605 A1 WO 2007032605A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
separation apparatus
cleaning
liquid separation
blade
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
Application number
PCT/KR2006/003050
Other languages
English (en)
Inventor
Sang-Chul Byun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2007032605A1 publication Critical patent/WO2007032605A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/824—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using pistons
    • 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

Definitions

  • the present invention relates, in general, to screw type solid-liquid separation apparatuses and, more particularly, to a screw type solid-liquid separation apparatus which removes liquid from sewage sludge, suspensions, various kinds of industrial waste, etc. (hereinafter, referred to simply as sludge) generated from a sewage disposal plant, a waste disposal plant, a manure disposal plant or a paper factory.
  • sludge a screw type solid-liquid separation apparatus which removes liquid from sewage sludge, suspensions, various kinds of industrial waste, etc.
  • sewage sludge generated in a sewage disposal plant has a low concentration (99.3 to 99.5 weight % of water content).
  • sewage sludge which has a low concentration, is carried to another place using a transport vehicle to be disposed of in landfill, incinerated, or reused.
  • a transport vehicle to be disposed of in landfill, incinerated, or reused.
  • it is concentrated and dehydrated before being carried.
  • rings are arranged in an axial direction at predetermined small intervals and are securely coupled to each other, thus constructing a cylindrical body. Furthermore, a screw, which has spiral blades provided on a screw shaft in an axial direction, is inserted into a space defined in the cylindrical body, thus constructing a sludge carrying screw conveyor. Cleaning blades, which are placed in the respective fine gaps defined between the rings, are provided on the respective spiral blades to return solids that enter the fine gaps to the space defined in the cylindrical body.
  • the solid-liquid separation apparatus of Korean Patent Registration No. 121732 includes a solid-liquid separation unit, a screw conveyor and a drive means.
  • the solid- liquid separation unit has a plurality of stationary rings, which are arranged in an axial direction, are spaced apart from each other at regular intervals, and are integrally coupled to each other, and movable rings, which are disposed in the respective gaps defined between the stationary rings.
  • the screw conveyor is rotatably disposed inside the stationary rings and the movable rings.
  • the drive means rotates the screw conveyor.
  • the inner diameters of the movable rings are smaller than the outer diameter of the screw conveyor.
  • a protrusion which is forcibly rotated by the screw conveyor, is provided on the circumferential inner surface of each movable ring.
  • ring-shaped rotary plates are arranged between ring- shaped stationary plates in a circular shape, thus constructing a typical filtration body.
  • An inlet is formed in one end of the filtration body, and an outlet is formed in the other end of the filtration body.
  • a screw is rotatably placed in the filtration body.
  • sludge which is supplied through the inlet, is carried to the outlet by rotation of the screw.
  • liquid separated from the sludge is discharged through gaps between the stationary plates and the rotary plates.
  • the rotary plates are rotatably supported and have gears, which are coupled to the actuator through a gear train, so that the rotary plates are rotated by the actuator.
  • protrusions are provided on the circumferential inner surfaces of the rotary plates so as to be able to contact the screw, so that the rotary plates are rotated depending on the rotation of the screw.
  • the 413164 includes a separation tank, which has at opposite ends thereof a sludge supply part and a solid discharge part, and a separation means.
  • the separation means has stationary plates which are placed in the separation tank at regular intervals, and movable plates which are disposed between the stationary plates, with fine gaps defined between the stationary plates and the movable plates.
  • the separation apparatus further includes a screw, which is installed in space defined in the separation means, and a movable plate drive means, which is operated in conjunction with the screw.
  • the movable plate drive means includes a cam, which is provided on the screw shaft, a drive plate, which is supported at the center of the upper end thereof on the cam, and connection bars, which are coupled to respective opposite sides of the lower end of the drive plate and are supported by support members provided on the movable plates.
  • the movable plates are moved along the outline of the cam.
  • Patent Publication No. Heisei. 6-42928 because the fine gaps are directly formed between the rings constituting the cylindrical body in order to remove liquid through the fine gaps, there is the advantage of reduced volume of the apparatus.
  • the screw conveyor has a structure in which the spiral blades are provided on the screw shaft and in which the cleaning blades, which are provided on the outer edges of the respective spiral blades, are placed in respective fine gaps, the spiral blades are easily damaged, and a lot of time is required to replace the spiral blades with new ones. Therefore, there is a disadvantage in that the maintenance cost is high.
  • the rotating structure of the movable rings is simple, but, because the solid-liquid separation unit consists of both stationary rings and movable rings, the volume of the separation apparatus is increased, thereby a relatively large space is required. Furthermore, the inner diameter of the movable rings is smaller than the outer diameter of the screw conveyor, and the movable rings are directly rotated by the blade of the screw conveyor. Therefore, due to abrasion between the movable rings and the blade of the screw conveyor, the lifetime of the separation apparatus is reduced.
  • the separation means consists of the stationary plates and the movable plates, the volume of the separation apparatus is increased, so that a relatively large installation space is required.
  • the movable plate drive means includes the cam, the drive plate and the connection bars, the structure thereof is complex. As well, if the movable plates are overloaded, movement of the drive plate along the outline of the cam becomes difficult. Therefore, the fine gaps may not be sufficiently cleaned. Disclosure of Invention
  • an object of the present invention is to provide a screw type solid-liquid separation apparatus which is reduced in volume and can satisfactorily clean fine gaps, and in which the structure of a cleaning means is simplified, so that the likelihood of malfunction is reduced, and installation and disassembly thereof can be easily conducted.
  • the present invention provides a screw type solid-liquid separation apparatus, including: a casing, having a sludge supply part at a first end thereof, a solid discharge part at a second end thereof, and a water collection tub at a lower position thereof; a separating means having a plurality of stationary rings fastened to support plates, which are provided at least at opposite ends of the casing, such that fine gaps are defined between the stationary rings, with a screw insertion space defined through the stationary rings; a screw inserted into the screw insertion space of the separating means, with a spiral blade provided on the screw; and a cleaning means rotated by rotating force of the screw, the cleaning means having a support member fastened to a circumferential outer edge of the spiral blade in an axial direction of the screw, and a plurality of cleaning blades coupled to the support member such that at least one cleaning blade is placed in each fine gap.
  • a cleaning means has a structure such that a support member is provided on an outer edge of a spiral blade of a screw, and the cleaning blades, which are placed in the respective fine gaps, are supported by the support member.
  • a process of removing solids from the fine gaps can be automatically conducted using only the force of the screw rotating in all of the fine gaps.
  • the efficiency of with which liquid is removed is increased compared to the conventional art, which uses movable rings.
  • abrasion of the cleaning blades is markedly reduced. Even if the cleaning blades are worn by use for a long period, they are easily and rapidly removed and replaced with new ones. Hence, productivity is increased, and maintenance costs are reduced.
  • FIG. 1 is a longitudinal sectional view of a screw type solid-liquid separation apparatus, according to an embodiment of the present invention
  • FlG. 2 is a sectional view taken along the line A-A of FlG. 1 ;
  • FlG. 3 is an exploded perspective view showing critical parts of the screw type solid-liquid separation apparatus of FlG. 1 ;
  • FIGS. 4 through 7 are views showing the operation of the screw type solid-liquid separation apparatus of FlG. 1 ;
  • FIGS. 8 through 10 are views showing a process of removing a cleaning blade of the screw type solid-liquid separation apparatus of FlG. 1.
  • FlG. 1 is a longitudinal sectional view of a screw type solid-liquid separation apparatus according to an embodiment of the present invention.
  • FlG. 2 is a sectional view taken along the line A-A of FlG. 1.
  • FlG. 3 is an exploded perspective view showing critical parts of the screw type solid-liquid separation apparatus.
  • the screw type solid-liquid separation apparatus of the present invention includes a casing 10, a separating means 20, a screw 30 and a cleaning means 40.
  • the casing 10 has a sludge supply part 11 at a first end thereof and has a solid discharge part 12 at a second end thereof.
  • the casing 10 further has casing walls 13a and 13b at front and rear positions thereof, and a water collection tub 14 at a lower position thereof.
  • the casing 10 is placed on a support bed 15.
  • the separating means 20 includes a plurality of stationary rings 21.
  • Each stationary ring 21 has therein a circular hole 22, which has a diameter such that the stationary ring 21 does not interfere with the rotation of a screw, which will be explained herein later.
  • Four fastening pieces 23 are integrally provided around the outer edge of each stationary ring 21.
  • a support hole 24 is formed through each fastening piece 23.
  • Spacers 25, each having a predetermined thickness, are interposed between the fastening pieces 23, and support bars 26 are inserted through the support holes 24 and the spacers 25, so that fine gaps (g) ranging from 0.2 mm to 1 mm are defined between the stationary rings 21, and a screw insertion space (S) is defined by the circular holes 22 of the stationary rings 21.
  • Opposite ends of the support bars 26 are fastened to support plates 27a and 27b, which are supported on the support bed 15 and are respectively disposed at positions adjacent to the sludge supply part 11 and the solid discharge part 12, using locking nuts 28a and 28b.
  • the screw 30 includes a screw shaft 31, and a spiral blade 32, which is provided around the circumferential outer surface of the screw shaft 31.
  • the screw 30 is inserted into the screw insertion space (S).
  • First and second ends of the screw shaft 31 are respectively supported by the support plate 27a and the outer wall of the solid discharge part 12.
  • the second end of the screw shaft 31 is coupled to a drive unit 33, which is provided adjacent to the solid discharge part 12.
  • the screw 30 having the above-mentioned construction serves to carry sludge, which is supplied through the sludge supply part 11, to the solid discharge part 12.
  • a back pressure plate 34 is slidably provided on the second end of the screw shaft 31 which is adjacent to the solid discharge part 12, thus adjusting the pressure at which solids are discharged, thereby adjusting the dehydration rate of the apparatus.
  • the sludge supply part 11 is provided such that the discharge center thereof is formed around the center of the screw shaft 31. Furthermore, the lower part of the outer wall 16 of the sludge supply part 11 is inclined towards the solid discharge part 12, so that, when flocculated sludge is input into the sludge supply part 11, the flock? is prevented from being damaged, thus increasing separation efficiency.
  • a hole 17 is formed through the outer wall 16, and an openable cover plate 18, which openably closes the hole 17, is provided on the outer wall 16, so as to facilitate interior inspection and the removal of sludge when an excessively large amount of sludge is input.
  • the separation means 20 is sectioned at an intermediate position by a sectional plate 29.
  • a portion adjacent to the sludge supply part 11 (the right portion in FIG. 1) is defined as a concentration section
  • a portion adjacent to the solid discharge part 12 (the left portion in FIG. 1) is defined as a dehydration section.
  • the spiral blade 32 of the screw 30 is constructed such that the pitch of the part thereof adjacent to the dehydration section is smaller than the pitch of the part thereof adjacent to the concentration section.
  • the cleaning means 40 includes a support member 41, which is provided in an outer edge of the spiral blade 32 in the axial direction of the screw 30, and at least one cleaning blade 44, which is supported by the support members 41 and is placed in each fine gap (g) defined between the stationary rings 21.
  • the cleaning blades 44 are rotated merely by the rotating force of the screw 30.
  • Each cleaning blade 44 has a thickness less than the size of the fine gap (g), so that water films can be formed between the stationary rings 21 and the opposite surfaces of the cleaning blade 44.
  • the support member 41 comprises a pair of support bars 42. Notches 43a and 43b are formed in the outer edge of the spiral blade 32 at positions spaced apart from each other by a regular distance.
  • the support bars 42 are inserted into and welded to the notches 43a and 43b, so that the support bars 42 maintain a constant distance therebetween.
  • Each cleaning blade 44 includes a blade body 45, which has locking stops 46a and 46b on opposite ends thereof, so that the locking stops 46a and 46b are hooked to the respective support bars 42.
  • each cleaning blade 44 has an inclined edge 47 on an end thereof, that is, on a leading rotation end thereof, so that, when the blade body 45 rotates in the fine gap (g), the inclined edge 47 minimizes the rotating resistance and makes it easy for solids to enter the center space of the stationary rings 21, thus efficiently conducting the cleaning operation.
  • the blade body 45 has a tool stop notch 48 on the other end thereof, such that when replacement of the cleaning blade 44 is required, it can be conveniently removed.
  • two support members 41 may be provided at opposite positions. Alternatively, more than two support members 41 may be provided. As such, in the case that two or more support members 41 are provided, even if the cleaning blades 44 cannot be provided on one support member 41 at some positions of the fine gaps (g) of the stationary rings 21 because the outer edge of the spiral blade 32 interferes with the desired positions of the fine gaps (g), the cleaning blades 44 can be selectively provided on the other support member 41 at positions at which the outer edge of the spiral blade 32 does not interfere with the fine gaps (g). Therefore, the cleaning blades 44 can be provided in all fine gaps (g), and the separation efficiency of the separation apparatus can thus be maximized.
  • Sludge which has been flocculated by previously mixing it with flocculant, is supplied into the sludge supply part 11 provided on the first end of the casing 10, while the screw 30 is rotated by the drive unit 33.
  • the sludge is carried to the solid discharge part 12.
  • the sludge is concentrated by the spiral blade 32 of the screw 30 in the screw insertion space (S) and the fine gaps (g) defined between the stationary rings 21.
  • liquid is dropped into the water collection tub 14 after passing through the fine gaps (g).
  • the liquid collected in the water collection tub 14 is carried to a subsequent processing place.
  • solids are discharged to the solid discharge part 12 in a concentrated state, that is, in a dehydrated state. As a result, the weight of the sludge is reduced.
  • the fine gaps (g) may be adjusted by changing the thickness of the spacers 25 interposed between the stationary rings 21, and the inclination angle of the separation means 20 can be adjusted.
  • the water content that is, the concentration of the sludge, can be adjusted through such adjustment. As such, if 75 to 80 weight % of the water content of the sludge is removed, it is convenient to treat the sludge in subsequent processes.
  • a cleaning means has a structure such that a support member is provided on an outer edge of a spiral blade of a screw, and the cleaning blades, which are placed in the respective fine gaps, are supported by the support member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Le séparateur solide-liquide à vis de la présente invention comporte un boîtier (10), qui possède une partie pour l’admission des boues (11) et une partie pour le refoulement des solides (12) respectivement au niveau des première et deuxième extrémités dudit séparateur, ainsi qu’une cuve de récupération d’eau (14) à une position plus basse de celui-ci. Le séparateur comporte en outre un moyen de séparation (20) doté d’anneaux stationnaires (21) fixés pour soutenir des plaques (27a) et (27b) de façon à ce que des espaces fins (g) soient définis entre les anneaux stationnaires (21), avec un espace d’insertion de vis (S) défini au travers des anneaux stationnaires (21). Le séparateur comporte en outre une vis (30) insérée dans l’espace d’insertion de vis (S) et possède une lame en spirale (32) sur celui-ci, ainsi qu’un moyen de nettoyage (40), qui comprend un organe de support (41) fixé à la lame en spirale dans le sens axial de la vis (30), et des lames de nettoyage (44) accouplées à l’organe de support (41) de façon à ce qu’au moins une lame de nettoyage (44) soit placée dans chaque espace fin (g).
PCT/KR2006/003050 2005-09-12 2006-08-03 Séparateur solide-liquide à vis Ceased WO2007032605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0084526 2005-09-12
KR1020050084526A KR100672218B1 (ko) 2005-09-12 2005-09-12 스크류식 고체ㆍ액체분리장치

Publications (1)

Publication Number Publication Date
WO2007032605A1 true WO2007032605A1 (fr) 2007-03-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/003050 Ceased WO2007032605A1 (fr) 2005-09-12 2006-08-03 Séparateur solide-liquide à vis

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KR (1) KR100672218B1 (fr)
WO (1) WO2007032605A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105727614A (zh) * 2016-04-21 2016-07-06 安尼康（福建）环保设备有限公司 一种螺旋格栅脱水机
JP2019107628A (ja) * 2017-12-20 2019-07-04 株式会社クボタ スクリュープレス型脱水機の運転方法及びスクリュープレス型脱水機の制御装置
CN114451818A (zh) * 2022-02-21 2022-05-10 添可智能科技有限公司 固液分离装置、清洁工具和清洁设备
CN120097012A (zh) * 2025-05-09 2025-06-06 泰州胜威塑业有限公司 一种塑料制品生产用原材料装载输送装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100878562B1 (ko) * 2008-08-05 2009-01-15 주식회사 천보엔지니어링 스크류식 고액 분리 장치
KR100887938B1 (ko) 2008-08-05 2009-03-12 주식회사 천보엔지니어링 슬러지 응집 겸 농축장치
KR200446110Y1 (ko) 2009-05-19 2009-09-25 김상웅 음식물쓰레기용 탈수장치
CN106477843A (zh) * 2015-08-27 2017-03-08 宗峰松 无磨损叠螺式污泥脱水机
CN107854892A (zh) * 2017-12-21 2018-03-30 徐州腾宇羽绒制品设备有限公司 羽绒污水分离器
CN109249637A (zh) * 2018-11-26 2019-01-22 蓝德环保科技集团股份有限公司 螺压脱水机及脱水方法

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KR0121732B1 (ko) * 1992-02-21 1997-12-04 1997년12월04일 고액분리장치
JPH1133316A (ja) * 1997-07-24 1999-02-09 Ebara Jitsugyo Kk スクリュー式固液分離装置
KR20030000984A (ko) * 2001-06-27 2003-01-06 (주)오에치케이 스크류식 고체·액체분리장치
JP2004160324A (ja) * 2002-11-12 2004-06-10 Tsurumi Mfg Co Ltd スクリュー式濾過脱水装置
JP4131107B2 (ja) * 2002-02-08 2008-08-13 日産自動車株式会社 車室内設定ユニット

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
KR0121732B1 (ko) * 1992-02-21 1997-12-04 1997년12월04일 고액분리장치
JPH1133316A (ja) * 1997-07-24 1999-02-09 Ebara Jitsugyo Kk スクリュー式固液分離装置
KR20030000984A (ko) * 2001-06-27 2003-01-06 (주)오에치케이 스크류식 고체·액체분리장치
JP4131107B2 (ja) * 2002-02-08 2008-08-13 日産自動車株式会社 車室内設定ユニット
JP2004160324A (ja) * 2002-11-12 2004-06-10 Tsurumi Mfg Co Ltd スクリュー式濾過脱水装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105727614A (zh) * 2016-04-21 2016-07-06 安尼康（福建）环保设备有限公司 一种螺旋格栅脱水机
JP2019107628A (ja) * 2017-12-20 2019-07-04 株式会社クボタ スクリュープレス型脱水機の運転方法及びスクリュープレス型脱水機の制御装置
JP7017399B2 (ja) 2017-12-20 2022-02-08 株式会社クボタ スクリュープレス型脱水機の運転方法及びスクリュープレス型脱水機の制御装置
CN114451818A (zh) * 2022-02-21 2022-05-10 添可智能科技有限公司 固液分离装置、清洁工具和清洁设备
CN120097012A (zh) * 2025-05-09 2025-06-06 泰州胜威塑业有限公司 一种塑料制品生产用原材料装载输送装置

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