EP0414621A1 - Entwässerungspresse - Google Patents

Entwässerungspresse Download PDF

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Publication number
EP0414621A1
EP0414621A1 EP90460028A EP90460028A EP0414621A1 EP 0414621 A1 EP0414621 A1 EP 0414621A1 EP 90460028 A EP90460028 A EP 90460028A EP 90460028 A EP90460028 A EP 90460028A EP 0414621 A1 EP0414621 A1 EP 0414621A1
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EP
European Patent Office
Prior art keywords
press according
plates
endless
press
bands
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.)
Withdrawn
Application number
EP90460028A
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English (en)
French (fr)
Inventor
Raymond Burger
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0414621A1 publication Critical patent/EP0414621A1/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band

Definitions

  • the present invention relates to a dehydrating press, that is to say a press intended for the extraction of a liquid contained in a liquid / solid suspension, suspension which is in the form of a paste or a semi-liquid mud.
  • the invention relates more precisely to a so-called filter belt press, of the type comprising a pair of endless porous and mobile bands moving continuously and arranged to receive and press between them the material which is to be dehydrated.
  • Document FR-A-1 526 592 relates to a fruit press, the filter strips of which have two parallel strands which enclose the material to be dehydrated, in this case pieces of fruit or vegetables. These two strands, which extend horizontally, are clamped between two pressure plates formed by frames carrying support rollers; each pressure plate acts against the strip strand associated with it by means of a movable endless belt.
  • This mat is hollowed out, on the side which bears against the filter band, with a series of grooves allowing the flow ment and the evacuation of the liquid which has been extracted by the pressing of the cake trapped between the two strips, and which has passed through the pores thereof.
  • Appropriate sealing means are provided along the longitudinal edges of the filter bands to retain the material therebetween.
  • the endless belt is constituted by an assembly of pressing plates which are articulated on each other in the manner of a track.
  • This type of press is generally satisfactory in current applications, in particular for pressing fruit, in which a low or moderate pressure (of the order of 5 bars) is sufficient to carry out the desired extraction.
  • one of the objectives of the present invention is to provide a press of the type mentioned above which makes it possible to work under appreciably greater pressures than those which can be obtained hitherto, this without significant modifications of this type. Press.
  • Another objective of the invention is to propose a press of simple and robust structure, the various elements of which are protected from early wear or deterioration.
  • Another objective is to provide a press that is easy to implement and can work with a high yield.
  • the dewatering press according to the invention is of the type comprising a pair of endless movable filter bands of which two approximately parallel strands enclosing the material to be dehydrated are pinched between two pressure plates, each of these acting against one of the strands strip through a movable endless belt, and sealing means being provided at the edges of said strip strands to confine the material therein.
  • each of these pressing plates is associated with at least one endless rolling chain, and preferably a plurality of endless rolling chains which are arranged parallel to each other and are driven jointly, these chains carrying a series of free rotating rollers, which are inserted between the pressure plate and the endless belt.
  • rollers which are interposed between each of the pressure plates and the associated endless belt will therefore be able both transmit pressure forces without damage and, since the chains are driving, carry out the drive of the endless belt against which they are supported; correlatively, they will therefore also cause or facilitate the entrainment of the filter band which tends, as a result of the pressure, to adhere to the associated moving mat, as well as the cake.
  • each of the belts has the shape of a caterpillar consisting of a set of flat plates which are articulated to each other around transverse axes, that is to say perpendicular to the direction of advance of the carpet and chains.
  • means are provided which ensure the relative guiding of the chains and of the associated belt in their direction of movement; these means are for example elongated shoes which are fixed to at least some of the plates constituting the caterpillar, and which are inserted between two neighboring chains.
  • each pressure plate carries a series of rails which serve to guide the rollers of each of the rolling chains.
  • the sealing means provided at the edges of the strip strands can consist simply in a 180 ° folding of one of the strips, under the other.
  • the press shown in FIGS. 1 to 5 comprises a frame 1 which includes a lower bed base 10, an upper bed base 11 and vertical uprights 12.
  • a lower pressure plate 2 and an upper pressure plate 3 are arranged between the box springs 10 and 11 which consist for example of "H" beams arranged longitudinally (parallel to the plane of FIG. 1) and welded to each other.
  • Appropriate guide means are provided which allow the guiding of each of the pressure plates 2, 3 in the frame in a vertical direction, from top to bottom and from bottom to top. These means nevertheless allow a slight pivoting of at least one of the two pressure plates in the longitudinal direction, allowing them to converge towards each other when moving from right to left in Figure 1 .
  • Each of the pressure plates 2, 3 can be moved vertically by hydraulic cylinders.
  • the upper plate 3 is driven by four double-acting cylinders 30 arranged in a rectangle and mounted on the upper base 11.
  • the lower plate 2 consists of three independent sections 201, 202, 203, which can be actuated independently, each by four jacks 20 carried by the lower base 10.
  • the press is equipped with two endless filter bands designated by the reference 6, the upper band being referenced 6a and the lower band 6b.
  • Each of these bands have a horizontal rectilinear section, or strand 63 which passes between the two pressure plates 2, 3. Between these pressure plates, the two strands 63a and 63b are located at a short distance from each other and are approximately parallel.
  • these two bands are guided by deflection rollers 62 which are rotatably mounted in appropriate bearings integral with the press frame.
  • the filter strips are made of a porous material, but not very permeable (due to the importance of the pressures), with very fine pores.
  • fabrics of fibrous material either natural such as linen, or synthetic or mineral such as fiberglass, are suitable in many applications.
  • the strip strands 63 move from right to left in FIG. 1, in the direction of arrow G.
  • the upstream part of the lower strand 63b passes under a hopper 7 which distributes the product to be dehydrated.
  • a conveyor 8 for example a conveyor belt, capable of receiving and evacuating the dehydrated product.
  • Scraping members 80, 81 of the strips, as well as suitable cleaning devices (not shown) are advantageously also provided at this end.
  • a tarpaulin 100 is placed inside the lower bed base 10. This tarpaulin is intended for collecting the liquid having passed through the filtering strips during the pressing process which is carried out between the two plates 2 and 3.
  • Each of the endless bands 6 is supported by its horizontal strand 63 against an endless belt of shorter length.
  • the upper and lower belts are respectively referenced 5a and 5b in Figure 1 and are shown in broken lines.
  • the press is equipped with two series of rolling chains 4a, 4b. Each of the series is arranged inside a mat 5a, 5b. It is shown in broken dashed lines in Figure 1.
  • Each series comprises a certain number of identical chains, arranged parallel to each other and passing over a series of idler sprockets 60, 61 mounted respectively at the downstream and upstream ends of the frame 1.
  • the sprockets 60 arranged downstream are fixed on a shaft horizontal and transverse common which is driven in rotation, at continuous and uniform speed, by a geared motor controlled by a variable speed drive.
  • the two sets of upper 4a and lower 4b chains are driven either by a single motor, via an appropriate transmission, or each by an independent motor, so that they move jointly at the same speed between the two pressure plates 2 and 3.
  • the arrows F have shown the rotation of the motor pinions 60a and 6ob.
  • the sets of upstream pinions 61a and 61b are idler gears free to rotate, not driven.
  • the rolling chains 4 are preferably handling chains conforming to the international standard "ISO 1977". They are formed by rollers 40 connected by lateral blades 41, 42. The rollers 40 are carried by pins 44 and are free to rotate on these.
  • This rolling chain is of the same type as that which is the subject of French Patent No. 2,512,135.
  • each chain is offset longitudinally with respect to the neighboring chain so as to achieve a regular distribution of the rollers in the horizontal plane and correspondingly obtain a homogeneous distribution of the support pressures exerted by the associated pressure plate.
  • Each of the rolling chains is guided in the longitudinal direction in rails 21, 31 which are fixed, for example by means of screws, to the pressing plates 2 respectively 3.
  • the moving belts 5 have the form of tracks. They consist of an assembly of rectangular plates 50 which are articulated to each other by means of transverse axes 51. As can be seen in FIG. 3, the adjacent edges of two adjacent plates preferably have a complementary bevelled shape suitable for ensure a correct transmission of the forces from one plate to the next, while allowing their relative pivoting when the strip is wound at the same time as the chains around the end sprockets 60 and 61.
  • Some of the plates carry an elongated shoe 43 which is shaped and positioned to be placed between the blades of two adjacent chains in order to ensure the stability of the belts 5 in the transverse direction.
  • the shoes have for example a "T” shape (see FIG. 5), the edges of the transverse bar of the "T” coming into contact with the blades constituting the chain links.
  • Each of the filter strips 6a, 6b is in contact against the plates 50 of one of the movable strips 5a respectively 5b.
  • the wall of the plates 50 of the liquid passage channels consist of holes passing through the plates and / or of grooves capable of directing the liquid extracted on the sides of the press.
  • these channels consist of holes passing through the plates and / or of grooves capable of directing the liquid extracted on the sides of the press.
  • the plates 50 of the upper belt Sa one can provide grooves, transverse or oblique, directing the liquid on the sides of the press, where additional means can then be intended to conduct this liquid by gravity into the cover 100.
  • the seal is simply ensured by virtue of the fact that the lower strip 6b has a greater width than the upper strip 6a, and that its protruding edge 65 is folded 180 ° inwards and towards the high so as to pass under the upper band, and to be pinched between the plates 50 and this upper band, which ensures its retention (see FIG. 5).
  • the two strips 6a, 6b therefore form a pocket in which the material to be treated is confined.
  • edges of the filter bands are reinforced, for example are made of a less porous material but more resistant than the rest of the bands, so as to be able to resist without risk of tearing the high pressures which develop at inside the pocket and which tend to push the material laterally on the sides of the press.
  • the two filter bands 6a, 6b are driven positively, in the same direction as the chains according to arrow G ), but at a speed double of the latter, for a reason which will be explained later.
  • suitable motors are provided which rotate certain of the deflection rollers 62a and 62b.
  • the jacks 30 are first actuated, so as to lower the pressure plate 3 and bring it into contact with the upper rolling chains 4a.
  • the function of the jacks 30 is to allow rapid movement of the upper pressure plate, which is useful for example for cleaning the press and / or maintenance work; they are not intended to control the clamping pressure of the bands, this function being assigned to the jacks 20 which act on the lower pressure plate 2.
  • the jacks 20 are then actuated so as to bring the different sections 201, 202 and 203 to the desired distance from the upper plate. These movements are made over a small amplitude, so that the various elements interposed between the pressing plates, namely the filtering bands, the chains and the moving belts, which have a certain flexibility, do not hinder these movements.
  • the actuation of the lower cylinders 20 is determined so that the two opposite faces of the plates 2 and 3, and correspondingly the two strip strands 63a and 63b, converge very slightly in the direction of advance G of the material.
  • this angle is less than 1 degree, the spacing of the two strands 63a, 63b varying for example from 30 to 15 mm from upstream to downstream.
  • each of the sections 201, 202, 203 is stressed differently so that the pressure within the cake will be gradually increasing.
  • this pressure will for example be of the order of 5 to 15 bars in the area of the first section 201, from 15 to 30 bars in the area of the second section 202, and from 30 to 50 bars in the area of the third and last section 203.
  • the material to be treated for example a sludge from a treatment plant, is continuously discharged from the hopper 7.
  • Known means are provided which ensure an almost regular distribution of the material over the entire width of the lower band 6b.
  • the material is continuously transported between the pressing plates 2 and 3 where it is pinched under high pressure between the two filter strips 6a and 6b.
  • the vertical force H exerted by each of the pressing plates (in this case the upper plate 3 in FIG. 1A) is transmitted to the filter band 6 associated via the rollers 40 and the platelets 50.
  • each of the filter bands adheres to the moving mat which is associated with it and moves together with it, driving the cake who is trapped between the two bands.
  • This adhesion is generally sufficient to drive the filter strips 6a, 6b.
  • it is possible to positively drive the filter bands (at a speed double that of the chains), to help their movement, in particular when empty. These bands are not subjected to any significant tensile or shear force and they therefore work in excellent conditions.
  • the cake is subjected to a progressively increasing compressive force which achieves the extraction of the liquid contained in the cake through the filtering strips, this liquid being collected in the sheet 100.
  • the dehydrated material is detached from the filter strips to which it tends to adhere by means of the scrapers 80, 81, and it is deposited on the conveyor 8 which routes it either to a storage area or to a subsequent processing machine.
  • each of the pressing zones corresponding to the sections 201, 202, 203 may have a length of the order of 2 m, which gives a total pressing length of 6 m.
  • the width of the bands will be of the order of 1 to 1.5 m depending on the capacities of the press that are desired.
  • the number of rolling chains associated with each of the pressing plates will be as large as possible, for example ten for a width of 1 m.
  • the diameter of the rollers 40 will for example be 70 mm.
  • the chains and the beams constituting the pressing plates will preferably be made of hard steel treated so as to withstand without deformation the high pressures developed by the press.
  • the lower pressure plate 2 could be made in one piece (and not be composed of independent sections).
  • the control means of the movable plate could consist, in a variant, in a force multiplier system with articulated parallelogram or toggle switch, actuated by jack.
  • the vertical displacement of the two pressure plates 2, 3 is achieved by horizontal displacement of a control part 301.
  • a control part 301 On each side of the press are provided two series of links 300, 200 articulated at one of their ends on one of the plates 3, 2, by means of axes 303, respectively 302. At their other end, these links are articulated, by means of a common axis 304 on the part 301 control, whose movement is provided by a cylinder (not shown).
  • the control part 301 is arranged under the lower plate 2, and the links 300 ensuring its connection with the upper plate 3 have an arcuate shape.
  • the axes 303, 302 are located in the same vertical plane and, during the pressing phase, the axis 304 also tends to approach this same plane. Thanks to this arrangement, a relatively low tensile force Q on the part 301 makes it possible to develop a pressing force R which, at the end of the stroke, is extremely high.
  • one of the two pressure plates with longitudinal stops - for example in plastic material with a low coefficient of friction (such as PTFE) - used to support the edges of the strips.
  • the guiding of the track-like belt with respect to the chains could be done, in a variant, by means of longitudinal grooves formed on the back of the plates, through which the rollers of the chains would pass.
  • the various plates constituting the tracks could be connected to each other not by axes, but by different connecting elements, for example chains or cables.
  • a press according to the invention can advantageously be placed downstream of a traditional press, in particular of the kind described in FR-B-2 580 946 already cited, which will have varied the dry matter content of the product from about 3% to 15 % about. Without adding product between the two presses, the press of the invention is then capable of increasing this rate from approximately 15% to approximately 30%.
  • the dehydrated product obtained is in the form of a very thin layer, the subsequent drying of which can be carried out easily, for example in a traditional drying tunnel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Treatment Of Sludge (AREA)
  • Press Drives And Press Lines (AREA)
EP90460028A 1989-08-25 1990-08-22 Entwässerungspresse Withdrawn EP0414621A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911360 1989-08-25
FR8911360A FR2651176A1 (fr) 1989-08-25 1989-08-25 Procede et dispositif de pressage en continu pour l'extraction de liquides.

Publications (1)

Publication Number Publication Date
EP0414621A1 true EP0414621A1 (de) 1991-02-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90460028A Withdrawn EP0414621A1 (de) 1989-08-25 1990-08-22 Entwässerungspresse

Country Status (6)

Country Link
US (1) US5082562A (de)
EP (1) EP0414621A1 (de)
JP (1) JPH0386393A (de)
CN (1) CN1023454C (de)
CA (1) CA2023048A1 (de)
FR (1) FR2651176A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022666A1 (en) * 1993-04-06 1994-10-13 Velo S.P.A. Process for pressing in particular, although not exclusively, grapes at a varying pressure, and machine for implementing said process
CN106739088A (zh) * 2016-12-02 2017-05-31 诸城市清润环保科技有限公司 一种四网带式糟渣脱水机

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AT402517B (de) * 1995-11-10 1997-06-25 Andritz Patentverwaltung Vorrichtung zur entwässerung von feststoff-flüssigkeitssuspensionen, insbesondere zellstoffsuspensionen
CN1085960C (zh) * 1995-11-10 2002-06-05 安德里茨-专利管理有限公司 用于对固－液悬浮液进行脱水的设备
US7381329B1 (en) * 2006-11-07 2008-06-03 William Harris Moss Belt press apparatus and method for high solids capture and high solids content
US7964105B2 (en) * 2008-08-07 2011-06-21 William Harris Moss Method for improving belt press dewatering
JP5490232B2 (ja) * 2009-06-15 2014-05-14 ドンイルキャンバスエンジニアリング株式会社 電気浸透式スラッジ減量装置
US20110297617A1 (en) * 2010-06-03 2011-12-08 Baker Hughes Incorporated Separator and method
US9242191B2 (en) 2011-12-13 2016-01-26 Industrial Technology Research Institute Filtration dehydration apparatus
CN102653438B (zh) * 2012-05-22 2013-12-11 江苏百新环境工程有限公司 电渗透带式压榨污泥脱水装备
CN102806624A (zh) * 2012-09-12 2012-12-05 胡玉 一种泡沫板连续成型机的脱膜方法及装置
CN103332842B (zh) * 2013-07-05 2014-05-14 浙江科力尔环保设备有限公司 电渗透污泥脱水机
CN103358581B (zh) * 2013-07-22 2016-05-04 智思控股集团有限公司 挤干机
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CN107187093A (zh) * 2017-05-25 2017-09-22 贵州省榕江县盛源天然食品开发有限公司 一种葛根面条生产用葛根提取设备
CN108056179A (zh) * 2017-12-19 2018-05-22 沈阳揽月工业设计有限公司 一种连续压制干豆腐机
CN107998705A (zh) * 2017-12-19 2018-05-08 沈阳理工大学 一种履带板夹压式污泥压滤机
CN108640470A (zh) * 2018-06-01 2018-10-12 江苏卡托科技有限公司 高效污泥压榨机
CN108863007A (zh) * 2018-08-31 2018-11-23 佛山市锐拓环境工程设备有限公司 一种移动式污泥脱水机
RU2698686C1 (ru) * 2018-10-24 2019-08-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" Ленточный фильтр-пресс для непрерывного обезвоживания материала
RU187828U1 (ru) * 2018-11-13 2019-03-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" Ленточный фильтр-пресс непрерывного действия
RU194404U1 (ru) * 2019-08-09 2019-12-09 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тверской государственный технический университет" Ленточный фильтр-пресс для непрерывного обезвоживания материала
CN110450448B (zh) * 2019-08-18 2020-12-08 郑多多 一种水压力式食用植物油榨取装置
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CN113144727A (zh) * 2021-04-15 2021-07-23 康觉 一种压滤机侧边密封连续高压脱水装置
CN113248099A (zh) * 2021-05-20 2021-08-13 霍邱县昌荣鹅业养殖有限公司 一种用于家庭农场中禽舍的废弃物处理设备
CN115177977B (zh) * 2022-08-01 2023-07-18 湖南凯耀生物科技有限公司 一种绞股蓝全草批量化提取绞股蓝皂苷的方法及其装置

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GB191013656A (en) * 1910-06-06 1911-09-06 Nils Testrup Improvements in Band Presses.
FR601270A (fr) * 1925-07-23 1926-02-26 Presse continue pour fruits ou autres matières
DE472419C (de) * 1926-10-10 1929-03-01 Franziska Gertrud Horst Presse aus zwei endlosen, keilfoermig gegeneinanderlaufenden Baendern
FR746330A (fr) * 1932-02-17 1933-05-26 Presse convenant pour la déshydratation de la tourbe et d'autres matières colloïdales
FR1096275A (fr) * 1954-01-15 1955-06-17 Presse à compression continue
FR2002087A1 (de) * 1968-02-16 1969-10-03 Willmes Josef Kg
DE2166552A1 (de) * 1971-11-22 1974-10-03 Kuesters Eduard Presse zur ausuebung einer flaechenpressung auf einen laengenabschnitt einer laufenden bahn
DE2421955A1 (de) * 1974-05-07 1975-12-04 Sandco Ltd Bandpresse, insbesondere hydraulische doppelbandpresse, fuer fortlaufend zu behandelndes material
FR2331365A1 (fr) * 1975-11-13 1977-06-10 Bruderhaus Maschinen Gmbh Filtre-presse a bande

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191013656A (en) * 1910-06-06 1911-09-06 Nils Testrup Improvements in Band Presses.
FR601270A (fr) * 1925-07-23 1926-02-26 Presse continue pour fruits ou autres matières
DE472419C (de) * 1926-10-10 1929-03-01 Franziska Gertrud Horst Presse aus zwei endlosen, keilfoermig gegeneinanderlaufenden Baendern
FR746330A (fr) * 1932-02-17 1933-05-26 Presse convenant pour la déshydratation de la tourbe et d'autres matières colloïdales
FR1096275A (fr) * 1954-01-15 1955-06-17 Presse à compression continue
FR2002087A1 (de) * 1968-02-16 1969-10-03 Willmes Josef Kg
DE2166552A1 (de) * 1971-11-22 1974-10-03 Kuesters Eduard Presse zur ausuebung einer flaechenpressung auf einen laengenabschnitt einer laufenden bahn
DE2421955A1 (de) * 1974-05-07 1975-12-04 Sandco Ltd Bandpresse, insbesondere hydraulische doppelbandpresse, fuer fortlaufend zu behandelndes material
FR2331365A1 (fr) * 1975-11-13 1977-06-10 Bruderhaus Maschinen Gmbh Filtre-presse a bande

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PATENT ABSTRACTS OF JAPAN, vol. 7, no. 112 (M-215)[1257], 17 mai 1983; & JP-A-58 032 600 (HITACHI ZOSEN) 25-02-1983 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022666A1 (en) * 1993-04-06 1994-10-13 Velo S.P.A. Process for pressing in particular, although not exclusively, grapes at a varying pressure, and machine for implementing said process
CN106739088A (zh) * 2016-12-02 2017-05-31 诸城市清润环保科技有限公司 一种四网带式糟渣脱水机

Also Published As

Publication number Publication date
US5082562A (en) 1992-01-21
JPH0471640B2 (de) 1992-11-16
CN1049629A (zh) 1991-03-06
FR2651176A1 (fr) 1991-03-01
CN1023454C (zh) 1994-01-12
CA2023048A1 (en) 1991-02-26
JPH0386393A (ja) 1991-04-11

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