WO2005102495A1 - Filtre a compression rotatif equipe d’une racle de soufflage fendue - Google Patents

Filtre a compression rotatif equipe d’une racle de soufflage fendue Download PDF

Info

Publication number
WO2005102495A1
WO2005102495A1 PCT/JP2004/005801 JP2004005801W WO2005102495A1 WO 2005102495 A1 WO2005102495 A1 WO 2005102495A1 JP 2004005801 W JP2004005801 W JP 2004005801W WO 2005102495 A1 WO2005102495 A1 WO 2005102495A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen
scraper
rotary compression
liquid
compression filter
Prior art date
Application number
PCT/JP2004/005801
Other languages
English (en)
Japanese (ja)
Inventor
Kouji Fujimoto
Jun Ohashi
Original Assignee
Tomoe Engineering 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 Tomoe Engineering Co. Ltd. filed Critical Tomoe Engineering Co. Ltd.
Priority to CNA2004800426085A priority Critical patent/CN1933886A/zh
Priority to JP2006512461A priority patent/JPWO2005102495A1/ja
Priority to PCT/JP2004/005801 priority patent/WO2005102495A1/fr
Publication of WO2005102495A1 publication Critical patent/WO2005102495A1/fr

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
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • 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
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • 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

Definitions

  • the present invention is an apparatus for performing dehydration by filtering and pressing a mixture of a solid substance and a liquid substance (processed undiluted solution) such as a raw material of a processed food, a semi-processed product thereof, or sludge.
  • the present invention relates to a rotary compression filter that performs a dehydration treatment by gradually applying pressure to a stock solution to be processed as it progresses in a formed annular filtration chamber.
  • a rotary compression filter (rotary press filter) is, for example, as disclosed in Japanese Patent Application Laid-Open No. 2001-113109, in which an annular filtration chamber formed around a rotation axis is processed. This is a device that introduces the stock solution and rotates the hollow disk-shaped screen to advance the stock solution to the front, and gradually applies pressure to perform the dehydration process.
  • the processing stock solution is introduced into the filtration chamber from the stock solution supply port, and sequentially proceeds in the filtration chamber in a predetermined direction due to the frictional force generated between the stock solution and the rotating screen.
  • the screen since the screen has a large number of small holes, as the undiluted solution passes through the filtration chamber, the moisture in the undiluted solution passes through the small holes of the screen and goes out of the filtration chamber. It will be discharged first.
  • the treated stock solution which was in a liquid state at the time of introduction into the machine, becomes semi-solid before passing through a position (initial filtration zone) about half a lap from the stock solution supply port. It is discharged (extracted cake) from the cake outlet to the outside of the machine.
  • the screen Since the screen rotates continuously, it returns to the initial filtration zone after passing through the initial filtration zone, the subsequent filtration, squeezing zone, and final squeezing zone. It will be transported continuously.
  • a scraper whose edge contacts the inner surface of the rotating screen at an acute angle is attached, and the surface of the screen is covered by the lump of fine particles contained in the processing stock solution.
  • the “rotary compression filtration machine” of the present invention has been made to solve the above-mentioned problems of the prior art, and as the solution proceeds in an annular filtration chamber formed around the rotation axis, In a rotary compression filter that dewaters the liquid by changing the undiluted solution into a cake, the edge is sharply in contact with the inner surface of the rotating screen.
  • the scraper is characterized in that the scraper is configured to be able to jet a gas or a liquid toward the inner surface of the staline.
  • the scraper is disposed in a range (initial filtration zone) from the undiluted solution supply port to about a half turn.
  • the solids layer can be mechanically peeled off during the initial filtration stage, and Fine particles agglomerating into the small holes can be directly eliminated, and clogging at the initial filtration stage can be suitably prevented.
  • the cleaning liquid or gas is configured to be ejected from the scraper at a pressure higher than the liquid pressure on the inlet side of the untreated solution, it is more preferable to remove the fine particle clumps remaining in the stirrup holes. Can be.
  • the “scraper for a rotary compression filter” is characterized in that a large number of openings facing the inner surface of the screen are formed along the longitudinal direction, and a flow path communicating with the opening. Is formed.
  • FIG. 1 is a sectional view of a rotary compression filter 3 according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA of the rotary compression filter 3 shown in FIG.
  • FIG. 3 is an enlarged view of the scraper 40 shown in FIG.
  • FIG. 4 is a sectional view taken along line CC of the scraper 40 shown in FIG.
  • FIG. 5 is an explanatory diagram of a cleaning process of the fine particle mass by the scraper 40.
  • FIG. 1 is a sectional view of a “rotary compression filter” according to the present invention.
  • the rotary compression filter 3 includes a rotating shaft 32, an inner ring spacer 33, an outer ring spacer 34, two donut-shaped water-permeable screens 35, 35, It is composed of a partition plate 36, an outer casing 37, and a drive device (not shown).
  • the rotating shaft 32 is held almost horizontally, and is rotated at a low speed (about 0.2 to 3 rotations Z) in the direction of arrow B shown in FIG. 1 by the driving force supplied by the driving device. It is supposed to.
  • the inner ring spacer 33 is fixed around the rotation axis 32, and rotates according to the rotation axis 32.
  • the outer race spacer 34 is arranged outside the inner race spacer 33 and fixed and held by an outer casing 37 (see FIG. 2). Further, the outer ring spacer 34 is arranged so as to always face the inner peripheral surface 34 c force S and the outer peripheral surface 33 a of the inner ring spacer 33 at a constant interval.
  • the two screens 35, 35 have a diameter of 0.3 to ensure water permeability.
  • It has a large number of small holes of about 8 mm, and functions as a filter for removing water from the processing stock solution as described later.
  • These screens 35, 35 are fixed on both side surfaces of the inner ring spacer 33, respectively, and rotate together with the rotating shaft 32 and the inner ring spacer 33 when they rotate. It has become. Further, the screens 35 and 35 are arranged at positions and dimensions such that the outer peripheral edge portions are close to both side surfaces of the outer ring spacer 34.
  • the partition plate 36 is held substantially horizontally and in a direction orthogonal to the axial direction of the rotating shaft 32.
  • the inner end 36a of the partition plate 36 matches the curvature of the outer peripheral surface 33a of the inner ring spacer 33, and is formed so as to be in surface contact with the curvature and slide.
  • the outer end 36b (the end opposite to the inner end 36a) of the partition plate 36 is between the base end 34a and the end 34b of the outer ring spacer 34. , And are held at predetermined intervals.
  • the space secured between the outer end 36 b and the base end 34 a of the outer ring spacer 34 serves as a stock solution supply port 38 for supplying a stock solution to be introduced into the apparatus.
  • Used for The space secured between the outer end 36 b and the end 34 b of the outer race spacer 34 functions as a cake outlet 39.
  • the rotary compression filter 3 is sealed by an outer casing 37 except for a stock solution supply port 38, a cake outlet 39, and a liquid discharge port 42.
  • the rotary compression filter 3 is a space formed between the filtration chamber 41 (the inner ring spacer 33 and the partition plate 36 and the outer ring spacer 34). A space from the stock solution supply port 38 to the cake outlet 39 is formed.
  • the cross section of the filtration chamber 41 has a rectangular shape, and, as shown in FIG. 1, a portion extending in an annular (C-shaped) shape. (Annular part) and a part (straight part) extending linearly.
  • scrapers 40 are attached to the outer ring spacer 34 of the rotary compression filter 3.
  • These scrapers 40 are slit blow type scrapers, and are a lump of fine particles in the processing solution adhering to the inner surface of the screen 35 rotating in a predetermined direction and stay in the small holes of the screen 35.
  • the fine particle clumps and the like can be suitably removed in the initial filtration stage, so that it is possible to suitably avoid a decrease in the amount of liquid removed due to clogging of the screen 35 (a decrease in processing capacity). .
  • these scrapers 40 have a base end fixed to the side surface of the outer ring spacer 34 in a direction such that the tip thereof is directed toward the inner ring spacer 33. The edge is brought into sharp contact with the inner surface of the screen 35.
  • four scrapers 40 are attached to each of the two sides of the outer ring spacer 34 (a total of eight scrapers on both sides). In the range (initial filtration zone), they are almost evenly distributed (at 45 ° intervals).
  • FIG. 3 is an enlarged view of the scraper 40
  • FIG. 4 is a sectional view of the scraper 40 of FIG. 3 taken along the line CC.
  • the scraper 40 has a narrower width at the tip portion 40a than at the base portion 40b side, that is, a “tapered shape”.
  • the hollow channel 2 extending in the longitudinal direction is formed.
  • a number of slits 4 are formed along the longitudinal direction. Each of these slits 4 is arranged inside (at a position close to the center) of the front end 40 c of the edge, and communicates with the hollow flow path 2. Then, the cleaning liquid is supplied into the inside of the scraper 40 (hollow flow path 2) from the opening 5 on the base end side side, and as shown in FIG.
  • the cleaning liquid can be sprayed toward the side surface at a high pressure (higher than the liquid pressure on the inlet side of the processing stock solution). More specifically, the inlet side liquid pressure of the processing stock solution is usually 10 to 5 OKPa, but here, the cleaning solution is sprayed at a higher pressure of 0.4 to 1 MPa. be able to. That is, the slit 4 of the scraper 40 functions as an injection port for the cleaning liquid.
  • the cleaning liquid is jetted from the slit 4 toward the inner surface of the screen 35 at a high pressure, the fine particles remaining in the small holes of the screen 35 are removed from the opposite side (the outer surface of the screen 35). ), The inside of the small hole can be washed, and the clogged state of the screen 35 can be eliminated.
  • the slits 4 are all located inside the edge tip 40c as described above, as shown in FIG.
  • the cleaning liquid can be directly sprayed into the small holes of the screen 35. Effectively eliminate clogging of screen 35 You can.
  • the cleaning liquid used here is not particularly limited, and may be, for example, water or warm water, or a surfactant or the like.
  • a surfactant, or the like When warm water, a surfactant, or the like is used, even if fats and oils or the like adhere or remain in the small holes of the screen 35, they can be suitably removed.
  • high-pressure cleaning liquid instead of the high-pressure cleaning liquid, high-pressure air (or other gas) or high-temperature steam can be injected.
  • high-pressure air or other gas
  • high-temperature steam can be injected at the same time.
  • the scraper 40 is formed by integrally molding the entire plate, or by using two plate members having grooves formed on the surface so that the grooves are on the inside. It is also possible to use a member in which a hollow flow path and a slit are formed inside by laminating.
  • the shape of the injection port is not necessarily limited to the slit, and a large number of circular, elliptical, or rectangular injection ports may be arranged in parallel instead of the slit.
  • the injection port is arranged so that the cleaning liquid or the like can be injected substantially over the entire area of the screen 35 in the radial direction. It is not necessary for the injection ports to be arranged over the entire range up to the part 40b.
  • the injection port is formed only on the base end portion 40b side, and in the second scraper 40 adjacent to this, the injection port is formed only on the intermediate portion.
  • an injection port is formed only on the tip portion 40 a side, and the plurality of scrapers 40 are configured so that the entire area of the screen 35 is reinforced. You can also.
  • the opening area of the injection port in one scraper 40 can be reduced, and as shown in FIG. 3, the injection port is formed over almost the entire length in the longitudinal direction. Compared to the scraper 40, a larger injection pressure can be realized with a smaller supply pressure.
  • the rotary compression filter of the present invention is configured so that gas or liquid can be ejected from the scraper toward the inner surface of the screen, the solid material layer adhered to the inner surface of the screen is formed. In addition to stripping off the particles, it is possible to remove the fine particle clumps remaining in the small holes of the screen, and it is possible to preferably eliminate the clogged state of the screen.

Landscapes

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

Abstract

Filtre à compression rotatif (3) capable non seulement de décoller et d’ôter une couche de matières solides adhérant à la surface intérieure d’un tamis, mais aussi d’éliminer des amas de particules qui se sont accumulés dans les petits trous du tamis afin de décolmater correctement le tamis, dans lequel une pression est progressivement appliquée au liquide d’origine à traiter tandis que le liquide d’origine est transféré dans une chambre de filtration annulaire (41) formée autour d’un arbre rotatif (32) afin de modifier le liquide d’origine de type liquide et lui donner la forme d’un gâteau en vue d’un traitement de déshydratation. Le filtre (3) est caractérisé en ce que des racles (40) formées de manière à pouvoir injecter du gaz ou du liquide en direction de la surface intérieure du tamis (35) sont montées sur la surface intérieure du tamis (35) de façon à amener leurs bords au contact de cette surface selon des angles aigus.
PCT/JP2004/005801 2004-04-22 2004-04-22 Filtre a compression rotatif equipe d’une racle de soufflage fendue WO2005102495A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNA2004800426085A CN1933886A (zh) 2004-04-22 2004-04-22 具有狭缝喷吹式刮板的旋转式压缩过滤机
JP2006512461A JPWO2005102495A1 (ja) 2004-04-22 2004-04-22 スリットブロー式スクレーパを有する回転式圧縮濾過機
PCT/JP2004/005801 WO2005102495A1 (fr) 2004-04-22 2004-04-22 Filtre a compression rotatif equipe d’une racle de soufflage fendue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/005801 WO2005102495A1 (fr) 2004-04-22 2004-04-22 Filtre a compression rotatif equipe d’une racle de soufflage fendue

Publications (1)

Publication Number Publication Date
WO2005102495A1 true WO2005102495A1 (fr) 2005-11-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/005801 WO2005102495A1 (fr) 2004-04-22 2004-04-22 Filtre a compression rotatif equipe d’une racle de soufflage fendue

Country Status (3)

Country Link
JP (1) JPWO2005102495A1 (fr)
CN (1) CN1933886A (fr)
WO (1) WO2005102495A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2005105263A1 (ja) * 2004-04-28 2008-09-18 巴工業株式会社 高脱水型回転加圧脱水機
CN105013229A (zh) * 2014-11-26 2015-11-04 安徽嘉智信诺化工有限公司 一种脱水装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101152754B1 (ko) * 2011-11-25 2012-06-18 배정용 액즙기
CN106241973A (zh) * 2015-09-09 2016-12-21 无锡亮慧环保机械有限公司 污泥水的磁性分离处理装置
CN109159449B (zh) * 2018-11-13 2021-02-12 宁夏西粮粮油集团有限公司 一种食用油制作用的自动压榨设备
CN109351032B (zh) * 2018-11-14 2021-01-05 哈尔滨华东电站配件维修有限公司 一种火电厂循环水排污水处理系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001058107A (ja) * 1999-06-17 2001-03-06 Ishigaki Co Ltd フイルタープレス
JP2002210308A (ja) * 2001-01-19 2002-07-30 Ishigaki Co Ltd フイルタープレス
WO2003004130A1 (fr) * 2001-07-05 2003-01-16 Les Industries Fournier Inc. Procede et appareil permettant d'extraire un liquide present dans une masse humide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001058107A (ja) * 1999-06-17 2001-03-06 Ishigaki Co Ltd フイルタープレス
JP2002210308A (ja) * 2001-01-19 2002-07-30 Ishigaki Co Ltd フイルタープレス
WO2003004130A1 (fr) * 2001-07-05 2003-01-16 Les Industries Fournier Inc. Procede et appareil permettant d'extraire un liquide present dans une masse humide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2005105263A1 (ja) * 2004-04-28 2008-09-18 巴工業株式会社 高脱水型回転加圧脱水機
JP4546954B2 (ja) * 2004-04-28 2010-09-22 巴工業株式会社 高脱水型回転加圧脱水機
CN105013229A (zh) * 2014-11-26 2015-11-04 安徽嘉智信诺化工有限公司 一种脱水装置

Also Published As

Publication number Publication date
JPWO2005102495A1 (ja) 2008-03-06
CN1933886A (zh) 2007-03-21

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