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WO2008020674A1 - Déshydrateur centrifuge - Google Patents

Déshydrateur centrifuge Download PDF

Info

Publication number
WO2008020674A1
WO2008020674A1 PCT/KR2007/002075 KR2007002075W WO2008020674A1 WO 2008020674 A1 WO2008020674 A1 WO 2008020674A1 KR 2007002075 W KR2007002075 W KR 2007002075W WO 2008020674 A1 WO2008020674 A1 WO 2008020674A1
Authority
WO
WIPO (PCT)
Prior art keywords
bowl
pulley
centrifugal dehydrator
screw conveyor
shaft
Prior art date
Application number
PCT/KR2007/002075
Other languages
English (en)
Inventor
Jae Sun Kim
Original Assignee
Hwa Yang Machinery Co. Ltd
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 Hwa Yang Machinery Co. Ltd filed Critical Hwa Yang Machinery Co. Ltd
Publication of WO2008020674A1 publication Critical patent/WO2008020674A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/205—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with special construction of screw thread, e.g. segments, height
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2083—Configuration of liquid outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2091—Configuration of solids outlets
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Definitions

  • the present invention relates to a centrifugal dehydrator for sludge extraction which does not use a coagulant.
  • a conventional sludge extracting method generally, sludge produced from the process of treating foul water or waste water of livestock farming is inserted to a centrifugal separator in order to concentrate and dehydrate by physical centrifugal force.
  • a conventional centrifugal separator extracts sludge inserted by operation of a screw conveyor as illustrated in Korean Patent No. 407896. The centrifugal separator inserts sludge containing water and solid to a rotating bowl, and then separates the water and solid by applying centrifugal force with low power. During this process, specific coagulant is inserted to extract the sludge.
  • This process is illustrated in Fig. 1 in more detail.
  • the present invention intends to solve the above problems of a conventional centrifugal separator.
  • a centrifugal dehydrator comprising a bowl having an inner surface in which at least one crush unit is disposed; and a screw conveyor disposed inside the bowl and having a fan making a certain gap with the crush unit and the inner surface of the bowl.
  • Another object of the present invention is to provide a centrifugal dehydrator separating and extracting celluloid, optical fiber, sebum, etc., which are main components of sludge through a plurality of partitions by different specific gravities.
  • Another object of the present invention is to provide a centrifugal dehydrator having a bowl and a screw conveyor which are rotated with backlash, wherein the velocities of the bowl and the screw conveyor may be 2500-7000RPM.
  • the centrifugal dehydrator of the present invention comprises a bowl having an inner surface in which at least one crush unit is disposed; and a screw conveyor disposed inside the bowl, and having a fan making a certain gap with the crush unit.
  • four crush units may be disposed with a same space in the inner surface of the bowl, and the gap between the fan and the crush unit may be no more than lmm. Also, the gap between the fan and the inner surface of the bowl may be in the range of lmm to 3mm.
  • a first screw shaft is connected to one end of the bowl, and a second screw shaft is connected to one end of the screw conveyor, wherein the screw conveyor includes a pipe acceptance part, and a pipe passing through the first screw shaft is accepted to the pipe acceptance part via slide connection.
  • a first rotor shaft is connected to one end of the first screw shaft, and a first pulley is connected to one end of the first rotor shaft.
  • a second rotor shaft is connected to one end of the second screw shaft, and a second pulley is connected to one end of the second rotor shaft.
  • a power transmitted from the first pulley rotates the bowl, and a power transmitted from the second pulley rotates the screw conveyor.
  • the first pulley is linked with a third pulley connected onto shaft of the first motor through a V belt
  • the second pulley is linked with a fourth pulley connected onto shaft of the second motor through a V belt, wherein the first motor and the second motor rotate with backlash.
  • a plate is formed in the center of the pipe acceptance part, and a projection part is protruded onto the front side of the plate, and a sludge extracted from an outlet of the pipe is guided to the projection part.
  • a plurality of partitions are formed inside the pipe acceptance part, and a plurality of holes formed outside the partitions pass through the screw conveyor.
  • the centrifugal hydrator according to the present invention can have the following advantages.
  • the centrifugal dehydrator of the present invention comprises at least one crush unit disposed on an inner surface of a bowl, and the gap of between a fan of a screw conveyor and a crush unit is different from that of between a fan of the screw conveyor and the inner surface of the bowl.
  • the centrifugal dehydrator of the present invention does not need a separate coagulant.
  • the present process is simpler, and can reduce environmental pollution by waste from using coagulant, and the present sludge may be used as a barnyard manure.
  • the centrifugal dehydrator of the present invention may set the percentage of water content of the sludge to 30% lower than that of the conventional sludge.
  • FIG. 1 is a sectional view of a conventional centrifugal separator
  • FIG. 2 is a sectional view of a combined state of the centrifugal dehydrator according to one embodiment of the present invention
  • Fig. 3 is a sectional view of a disassembled state of the centrifugal dehydrator of Fig.
  • FIG. 4 is a side view of a first rotor shaft
  • FIG. 5 is a perspective view of the first rotor shaft
  • Fig. 6 is a side view of a second rotor shaft
  • Fig. 7 is a perspective view of the second rotor shaft.
  • Fig. 2 is a sectional view of a combined state of the centrifugal dehydrator according to one embodiment of the present invention.
  • a bowl 1 is inserted into a housing 5, and a screw conveyor 2 is combined into the bowl 1.
  • At least one crush unit 14 is disposed on the inner surface of the bowl 1 according to the length direction of the bowl 1.
  • the number of the crush unit 14 is not limited specifically, and four crush units 14 or eight crush units 14 may be disposed with a same space in the inner surface of the bowl 1.
  • FIG. 44 An enlarged view for the upper side of the bowl 1 illustrates the crush unit 14 disposed on the inner surface of the bowl 1.
  • the screw conveyor 2 includes a pipe acceptance part 23, and a pipe 3 passing through the first screw shaft 12 is accepted to the pipe acceptance part 23 via a slide connection.
  • a plate 24 is formed in the center of the pipe acceptance part 23, and a projection part 25 is protruded onto the front side of the plate 24.
  • a sludge extracted from an outlet 31 of the pipe 3 is guided to the projection part 25, and makes friction with the projection part 25 as shown by arrow in Fig. 2.
  • the screw conveyor 2 and bowl 1 make a backlash, and a centrifugal separating operation occurs, and by gravity differences, molecules having different gravities are guided to a plurality of partitions 26a and 26b.
  • each molecule in the sludge may be separated to celluloid whose gravity is light, optical fiber, sebum, grease oil, etc., and each molecule may be guided to different partitions 26a and 26b.
  • the velocities of the bowl 1 and the screw conveyor 2 may be
  • Fig. 3 is a sectional view of a disassembled state of the centrifugal dehydrator of Fig.
  • a third pulley 43 and a fourth pulley 44 are connected to shaft of a first motor Ml and shaft of a second motor M2, respectively, and are linked with a first pulley 41 and a second pulley 42 connected to shafts of the bowl 1 and screw conveyor 2, respectively, through V belts 411 and 421.
  • a power supplied from the first motor Ml and the second motor M2 is transmitted to the first pulley 41 and the second pulley 42, respectively.
  • Fig. 4 is a side view of a first rotor shaft; and Fig. 5 is a perspective view of the first rotor shaft.
  • Fig. 6 is a side view of a second rotor shaft; and Fig. 7 is a perspective view of the second rotor shaft.
  • One end of the second rotor shaft 21 is connected to the second pulley 42, and the other end of the second rotor shaft 21 is connected to the second screw shaft 22, whereby a power transmitted from the second pulley 42 rotates the screw conveyor 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un déshydrateur centrifuge destiné à l'extraction des boues qui fonctionne sans coagulant. Le déshydrateur centrifuge de l'invention comprend : un cylindre possédant une surface interne, à l'intérieur duquel est placée au moins une unité de broyage; et un transporteur à vis sans fin disposé à l'intérieur du cylindre et équipé d'un ventilateur séparé par une certaine distance de l'unité de broyage. L'unité de broyage peut comprendre quatre (4) ou huit (8) unités, qui peuvent être situées dans un même espace sur la surface interne du cylindre, l'espace qui sépare le ventilateur de l'unité de broyage ne dépassant pas 1mm. Par ailleurs, l'espace qui sépare le ventilateur de la face interne du cylindre peut être compris entre 1mm et 3 mm.
PCT/KR2007/002075 2006-08-16 2007-04-27 Déshydrateur centrifuge WO2008020674A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2006-0077348 2006-08-16
KR1020060077348A KR100688036B1 (ko) 2006-08-16 2006-08-16 응집제를 사용하지 않고 슬러지가 추출되는 원심탈수기

Publications (1)

Publication Number Publication Date
WO2008020674A1 true WO2008020674A1 (fr) 2008-02-21

Family

ID=38102067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2007/002075 WO2008020674A1 (fr) 2006-08-16 2007-04-27 Déshydrateur centrifuge

Country Status (2)

Country Link
KR (1) KR100688036B1 (fr)
WO (1) WO2008020674A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104556599A (zh) * 2014-12-04 2015-04-29 浙江海洋学院 一种油污泥回收分离处理技术
CN105435533A (zh) * 2015-12-14 2016-03-30 无锡市永亿精密铸造有限公司 一种离心式泥水分离器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100740608B1 (ko) 2007-03-02 2007-07-18 (주)이화에코시스템 응집,농축 및 원심탈수장치
KR100916032B1 (ko) * 2007-11-20 2009-09-08 이자빈 축산폐수 침전 슬러지 탈수용 원심탈수기
KR101428762B1 (ko) * 2013-02-01 2014-08-12 덕산엔지니어링 주식회사 슬러지용 원심탈수기
KR101422567B1 (ko) 2014-03-12 2014-07-24 (주)이화에코시스템 배출성능 향상형 배출구를 갖는 원심 분리기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002224891A (ja) * 2001-02-01 2002-08-13 Hitachi Zosen Corp 廃棄物の脱水装置およびその運転方法
US6589154B2 (en) * 2001-05-30 2003-07-08 Alfa Laval Inc. Decanter centrifuge with a gear box mounted on the bowl
KR200407420Y1 (ko) * 2005-11-15 2006-01-31 이기영 원심탈수기
KR200411144Y1 (ko) * 2005-12-12 2006-03-10 (주)이화에코시스템 슬러지 제거용 원심분리기

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200316299Y1 (ko) * 2003-02-27 2003-06-18 오인숙 탈수 촉진장치를 가진 슬러리용 스크류 컨베이어-원통형원심분리기
KR20030067632A (ko) * 2003-07-25 2003-08-14 주식회사 무한기술 협잡물과 슬러지 처리 복합 원심분리기
KR20050017257A (ko) * 2003-08-11 2005-02-22 김윤호 탈수기

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002224891A (ja) * 2001-02-01 2002-08-13 Hitachi Zosen Corp 廃棄物の脱水装置およびその運転方法
US6589154B2 (en) * 2001-05-30 2003-07-08 Alfa Laval Inc. Decanter centrifuge with a gear box mounted on the bowl
KR200407420Y1 (ko) * 2005-11-15 2006-01-31 이기영 원심탈수기
KR200411144Y1 (ko) * 2005-12-12 2006-03-10 (주)이화에코시스템 슬러지 제거용 원심분리기

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104556599A (zh) * 2014-12-04 2015-04-29 浙江海洋学院 一种油污泥回收分离处理技术
CN105435533A (zh) * 2015-12-14 2016-03-30 无锡市永亿精密铸造有限公司 一种离心式泥水分离器
CN105435533B (zh) * 2015-12-14 2017-07-14 无锡市永亿精密铸造有限公司 一种离心式泥水分离器

Also Published As

Publication number Publication date
KR100688036B1 (ko) 2007-03-02

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