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EP2754552B1 - Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse - Google Patents

Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse Download PDF

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Publication number
EP2754552B1
EP2754552B1 EP13000088.8A EP13000088A EP2754552B1 EP 2754552 B1 EP2754552 B1 EP 2754552B1 EP 13000088 A EP13000088 A EP 13000088A EP 2754552 B1 EP2754552 B1 EP 2754552B1
Authority
EP
European Patent Office
Prior art keywords
screen
screw
retaining element
longitudinal direction
press separator
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.)
Active
Application number
EP13000088.8A
Other languages
German (de)
English (en)
Other versions
EP2754552A1 (fr
Inventor
DI Otto Roiss
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.)
Roehren und Pumpenwerk Bauer GmbH
Original Assignee
Roehren und Pumpenwerk Bauer GmbH
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 Roehren und Pumpenwerk Bauer GmbH filed Critical Roehren und Pumpenwerk Bauer GmbH
Priority to PL13000088T priority Critical patent/PL2754552T3/pl
Priority to EP13000088.8A priority patent/EP2754552B1/fr
Priority to HUE13000088A priority patent/HUE038801T2/hu
Priority to ES13000088.8T priority patent/ES2681047T3/es
Priority to US14/760,088 priority patent/US10195806B2/en
Priority to PCT/EP2014/050018 priority patent/WO2014108349A1/fr
Publication of EP2754552A1 publication Critical patent/EP2754552A1/fr
Application granted granted Critical
Publication of EP2754552B1 publication Critical patent/EP2754552B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B30B9/12—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 pressing worms or screws co-operating with a permeable casing
    • B30B9/121—Screw constructions
    • 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
    • B30B9/12—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 pressing worms or screws co-operating with a permeable casing
    • 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
    • B30B9/26—Permeable casings or strainers

Definitions

  • the present invention relates to a press screw separator for separating solid components from a slurry containing solid and liquid components according to claim 1, and a method for operating the press screw separator according to claim 11.
  • Press screw separators comprise a cylindrical screen, such as US 2011/0186499 A1 is known.
  • a rotating screw is arranged in the sieve.
  • the pulp is squeezed out within the sieve, so that the liquid components pass through the lateral surface of the sieve.
  • a Feststoffpfropfen forms.
  • Wastewater from municipal, industrial or agricultural enterprises eg liquid manure or flocculants treated municipal sewage sludge
  • cleaning of the screen is required at regular intervals.
  • a press screw separator according to the preamble of claim 1, for example, from JP 2004-066306 A known. It is an object of the present invention to provide a press screw separator, which can be operated at low cost production and installation low maintenance. In particular, the cylindrical sieve should be rotatable together with the screw for cleaning purposes. Furthermore, it is an object of the present invention to specify a corresponding method for operating the press screw separator. The object is achieved by the features of the independent claims. The dependent claims relate to advantageous embodiments of the invention. Thus, the object is achieved by a press screw separator for separating solid components from a slurry containing solid and liquid components. Wastewater from municipal, industrial or agricultural enterprises is used as the slurry, which may be stabilized with flocculants.
  • the press screw separator comprises a housing and a cylindrical screen disposed in the housing. Furthermore, a worm is rotatably mounted in the housing. The worm extends at least partially into the cylindrical sieve. According to the cylindrical shape of the screen, a longitudinal direction and a circumferential direction are defined. The worm is rotatably mounted about the longitudinal axis. For cleaning the screen is provided that the screen is arranged rotatably about the longitudinal direction.
  • the sieve does not require its own drive, since with a sufficient solids content between the screw and the sieve a torque is transmitted from the screw to the sieve.
  • at least one retaining element is arranged in the housing, in particular between a housing wall and the lateral surface of the screen. Furthermore, an actuator is provided.
  • the holding element By means of the actuator, the holding element can be moved into a locking position and in a freewheeling position.
  • One end of the actuator is in particular firmly connected to the housing.
  • the other end of the actuator is connected to the retaining element.
  • On the screen, in particular on the lateral surface of the screen, at least one fixed stop is provided on the screen, in particular on the lateral surface of the screen.
  • This "locking position” is also referred to as "working position”.
  • the at least one holding element is moved by means of the actuator in the freewheeling position.
  • the retaining element moves away from the stop. In the free-running position, the screen rotates with the worm. This makes it possible to clean the sieve from all sides. According to the invention, therefore, the retaining element is actively moved, with the actuator, in the locking position and freewheeling position.
  • the holding element and the corresponding stop on the screen can act over the entire length of the screen, so that the force between the holding element and the stop is transmitted over as large a surface as possible.
  • the worm it is possible in accordance with the invention for the worm to rotate in the same direction both when the pulp is pressed out and when the sieve is cleaned.
  • the holding element is designed as a longitudinally extending holding rail.
  • the retaining rail extends in the longitudinal direction over a holding element length.
  • the sieve extends longitudinally over a sieve length. It is preferably provided that the holding element length is at least 50%, preferably at least 75%, particularly preferably 100%, of the sieve length. Furthermore, it is preferably provided that the stop or the plurality of stops extend over at least 50%, preferably over at least 75%, particularly preferably over at least 95%, of the holding element length.
  • the force between stop and retaining element is transmitted over as large as possible. Due to the fact that the sieve is supported against rotation on the retaining rail not only at its front ends but along its entire length, the sieve does not have to be very rigid. This has significant advantages during the squeezing of the pulp.
  • the sieve deforms elliptically, depending on the position of the usually double-barreled screw and / or the amount of the solid.
  • the inventive design of the press screw separator the screen may be relatively unstable, so that this deformation is possible during the squeezing of the pulp. Furthermore, the gap between the screw flights and the inner diameter of the screen can thereby be kept as small as possible, since contact between the screw flights and the screen is effectively avoided.
  • the retaining rail is preferably arranged parallel to the longitudinal direction.
  • the retaining rail is moved away from the lateral surface of the screen to the outside. In particular, this movement takes place in a radial direction perpendicular to the longitudinal direction.
  • the retaining rail is arranged parallel to the longitudinal direction both in the locking position and in the freewheeling position.
  • the retaining rail is preferably mounted on at least one guide element in the housing.
  • This guide element preferably has a housing-fixed cylinder, in which a piston is guided. The piston is connected to the retaining rail.
  • washing nozzles distributed along the longitudinal direction are preferably arranged.
  • water can be sprayed from outside onto the sieve in order to clean the sieve. Since the screen rotates during cleaning, it is sufficient to arrange only one row of washing nozzles.
  • a sensor for detecting a rotational angle and / or a rotational speed of the sieve is preferably provided.
  • the movement of the at least one retaining element from the freewheeling position into the locking position preferably takes place as a function of the data detected by the sensor. This will ensure that the Retaining element moves in the locking position at the right time, so that the stop rests against the holding element.
  • a plurality of holding elements are provided along the circumferential direction of the screen.
  • at least one actuator and in each case at least one fixedly connected to the screen stop is provided.
  • the actuator is preferably hydraulically, pneumatically or electrically operated.
  • the worm preferably comprises a conical worm core and at least one worm helix arranged on the worm core. Furthermore, an inlet for the pulp is arranged on the press screw separator on one end face of the cylindrical screen. At the other end of the screen a solids outlet is formed.
  • the conical worm core preferably tapers towards the inlet.
  • a cone ring is preferably arranged, which regulates the discharge amount of the solid.
  • the invention further comprises a method for operating the proposed press screw separator. The following steps are provided: (i) squeezing the slurry, wherein the screw is rotated and the holding element is in the locking position, (ii) moving the holding element into the free-running position, (iii) rotating the screw while the holding element is in the free-running position, so that the wire rotates with the screw, and (iv) cleaning the wire while the wire is rotating with the screw.
  • a short-term switching off of the drive of the worm is preferably carried out.
  • the worm is set in rotation again.
  • the screw rotates to squeeze the pulp and during cleaning of the sieve in the same direction.
  • the mentioned washing nozzles are turned on.
  • the rotation of the screen is monitored by the sensor.
  • the sensor passes a certain turning path of the screen to the actuator. Accordingly, the actuator moves the retaining element back into the Lock position. The sieve is caught by the holding elements and prevented from further rotation. Then again the squeezing of the pulp can take place.
  • the holding elements can also be adjusted for maintenance, for example, to prevent falling of the screen when disassembling the screw.
  • Fig. 1 shows three different views of the press screw separator 1.
  • the Fig. 2 to 3 show the in Fig. 1 marked sections.
  • Fig. 5 shows that in Fig. 4 marked detail V.
  • the press screw separator 1 comprises a housing 2.
  • a cylindrical sieve 3 is arranged.
  • a worm 4 is rotatably mounted in the housing 2.
  • the worm 4 extends through the cylindrical sieve 3.
  • a drive 5 designed as an electric motor or hydraulic motor, is provided.
  • an inlet 6 is formed in the housing.
  • the pulp to be squeezed out is directed into the interior of the sieve 3.
  • a solids outlet 8 is provided at the left end of the screen 3.
  • a drain 7 is provided at the bottom of the housing 2, for the liquid components of the slurry. Another sequence 7 is possible at a front end of the hollow screw 4.
  • the supplied via the inlet 6 pulp is squeezed by the rotation of the screw 4 from right to left. This forms a solid plug in the left area.
  • the solid leaves the press screw separator 1 via the solids outlet 8.
  • the separated liquid constituents flow out through the sieve 3 and leave the press screw separator 1 via the outlet 7.
  • Fig. 2 shows a conical ring 9 at the solids outlet 8.
  • the position of the cone ring 9, the amount of the discharged solid is regulated.
  • the screw 4 comprises a screw core 10 and at least one arranged on the screw core 10 screw flight 11.
  • the screw core 10 is conical and tapers in the direction of the inlet. 6
  • Fig. 2-4 show a longitudinal direction 13.
  • this longitudinal direction 13 extend the sieve 3 and the screw 4.
  • the screw 4 is rotated about the longitudinal direction 13.
  • Perpendicular to the longitudinal direction 13 is a radial direction 14.
  • the circumferential direction 15 is defined around the longitudinal direction 13.
  • a plurality of washing nozzles 12 are arranged along the longitudinal direction 13.
  • a liquid in particular water, can be injected from the outside onto the sieve 3.
  • Fig. 3 shows two retaining elements 17, designed as retaining rails.
  • the holding elements 17 each extend in the longitudinal direction 13.
  • the holding elements 17 are connected via an actuator 16 and guide elements 18 fixed to the housing 2.
  • the actuator 16 By means of the actuator 16, the holding elements 13 can be moved inwards, in the direction of the wire 3, and outwardly, away from the wire 3.
  • Fig. 3 shows further that 3 stops 19 are formed on the screen.
  • the exact design of the holding member 17 and the stopper 19 shows the enlarged view in FIG Fig. 5 ,
  • the stop 19 shown is firmly connected to the wire 3.
  • the stop 19 abuts against the retaining element 17.
  • the position shown in the figures is referred to as the "locking position".
  • the actuator 16 By means of the actuator 16, the holding member 17 can be moved to the outside. As a result, the stop 19 is no longer on the holding element 17, whereby a rotation of the wire 3 is possible.
  • the guide elements 18 have a housing-fixed cylinder 23. In this cylinder 23, a piston 24 is guided linearly movable. The piston 24 is connected to the holding element 17.
  • Fig. 2 shows a Siebrati 20 of the screen 3.
  • Fig. 3 shows a holding element length 21 of the holding member 17.
  • the holding element length 21 is formed as large as possible, so that over as large a portion of the Siebin 20, the force between the holding member 17 and the stopper 19 can be transmitted.
  • Fig. 4 shows a sensor 22. By means of the sensor 22, the rotational movement of the screen 3 is detected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Treatment Of Sludge (AREA)

Claims (11)

  1. Séparateur à vis sans fin de presse (1) pour la séparation de particules solides d'une eau trouble contenant des particules solides et liquides, comprenant
    - un boîtier (2),
    - un tamis (3) cylindrique disposé dans le boîtier (2) sur lequel un sens longitudinal (13) et un sens périphérique (15) sont définis, dans lequel le tamis (3) est mobile en rotation autour du sens longitudinal (13),
    - une vis sans fin (4) disposée dans le tamis (3) pour le pressage de l'eau trouble, dans lequel la vis sans fin (4) est mobile en rotation autour du sens longitudinal (13),
    - au moins un élément de retenue (17) disposé dans le boîtier (2),
    - au moins un actionneur (16) pour le déplacement de l'au moins un élément de retenue (17) entre une position de verrouillage et une position de marche à vide,
    - au moins une butée (19) raccordée fixement au tamis (3) qui est réalisée pour le repos contre l'élément de retenue (17) dans la position de verrouillage de sorte que, dans la position de verrouillage, le tamis (3) soit résistant à la rotation dans au moins un sens périphérique (15) et, dans la position de marche à vide, le tamis (3) tourne avec la vis sans fin (4),
    dans lequel par les particules solides de l'eau trouble un couple peut être transmis de la vis sans fin (4) au tamis (3) afin d'entraîner le tamis (3) dans la position de marche à vide de l'élément de retenue (17), caractérisé en ce que l'élément de retenue (17) est réalisé en tant que rail de retenue s'étendant dans le sens longitudinal (13).
  2. Séparateur à vis sans fin de presse selon la revendication 1, caractérisé en ce que le rail de retenue s'étend dans le sens longitudinal (13) sur une longueur d'élément de retenue (21) et le tamis (3), dans le sens longitudinal (13) sur une longueur de tamis (20), dans lequel la longueur d'élément de retenue (21) s'élève au moins à 50 %, de préférence au moins à 75 %, de la longueur de tamis (20).
  3. Séparateur à vis sans fin de presse selon la revendication 1 ou 2, caractérisé en ce que la butée (19) ou les plusieurs butées s'étendent sur au moins 50 %, de préférence sur au moins 75 %, de la longueur d'élément de retenue (21).
  4. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé en ce que le rail de retenue est disposé dans la position de verrouillage et dans la position de marche à vide parallèlement au sens longitudinal (13).
  5. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs buses de lavage (12) réparties le long du sens longitudinal (13) sont disposées dans le boîtier (2).
  6. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé par un capteur (22) pour la détection d'un angle de rotation et/ou d'une vitesse de rotation du tamis (3).
  7. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé par plusieurs éléments de retenue (17) répartis le long du sens périphérique (15) du tamis (3) avec respectivement au moins un actionneur (16) et respectivement au moins une butée (19) raccordée fixement au tamis (3).
  8. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé en ce que l'actionneur (16) fonctionne par voie hydraulique ou pneumatique ou électrique.
  9. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé en ce que la vis sans fin (4) comporte une tige de vis sans fin (10) conique et au moins une hélice de vis sans fin (11) disposée sur la tige de vis sans fin (10).
  10. Séparateur à vis sans fin de presse selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une alimentation (6) pour l'eau trouble est réalisée sur un côté avant du tamis (3) cylindrique, et une sortie de matières solides (8) est réalisée sur l'autre côté avant.
  11. Procédé de fonctionnement d'un séparateur à vis sans fin de presse (1) selon l'une quelconque des revendications précédentes, comprenant les étapes suivantes :
    - pressage d'une eau trouble, dans lequel la vis sans fin (4) tourne et l'élément de retenue (17) est dans la position de verrouillage,
    - déplacement de l'élément de retenue (17) dans la position de marche à vide,
    - rotation de la vis sans fin (4), alors que l'élément de retenue (17) est dans la position de marche à vide de sorte que le tamis (3) tourne avec la vis sans fin (4), et
    - nettoyage du tamis (3) alors que le tamis (3) tourne avec la vis sans fin (4).
EP13000088.8A 2013-01-09 2013-01-09 Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse Active EP2754552B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL13000088T PL2754552T3 (pl) 2013-01-09 2013-01-09 Separator ślimakowy oraz sposób działania separatora ślimakowego
EP13000088.8A EP2754552B1 (fr) 2013-01-09 2013-01-09 Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse
HUE13000088A HUE038801T2 (hu) 2013-01-09 2013-01-09 Préscsigás szeparátor és eljárás préscsigás szeparátor üzemeltetésére
ES13000088.8T ES2681047T3 (es) 2013-01-09 2013-01-09 Separador por presión helicoidal y procedimiento para la operación del separador por presión helicoidal
US14/760,088 US10195806B2 (en) 2013-01-09 2014-01-02 Screw press separator and method for operating the screw press separator
PCT/EP2014/050018 WO2014108349A1 (fr) 2013-01-09 2014-01-02 Séparateur à vis à pression et procédé permettant de faire fonctionner un séparateur à vis à pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13000088.8A EP2754552B1 (fr) 2013-01-09 2013-01-09 Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse

Publications (2)

Publication Number Publication Date
EP2754552A1 EP2754552A1 (fr) 2014-07-16
EP2754552B1 true EP2754552B1 (fr) 2018-05-02

Family

ID=47522375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13000088.8A Active EP2754552B1 (fr) 2013-01-09 2013-01-09 Séparateur à vis sans fin de presse et procédé de fonctionnement du séparateur à vis sans fin de presse

Country Status (6)

Country Link
US (1) US10195806B2 (fr)
EP (1) EP2754552B1 (fr)
ES (1) ES2681047T3 (fr)
HU (1) HUE038801T2 (fr)
PL (1) PL2754552T3 (fr)
WO (1) WO2014108349A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3026026T3 (da) * 2013-07-26 2019-07-08 Ishigaki Mech Ind Genindvindingsapparat og genindvindingsfremgangsmåde til genindvinding af specifikt materiale fra slam
US10486383B1 (en) * 2018-12-18 2019-11-26 V.Y.F. Express Inc. Screw press having screen vibration
US11162218B1 (en) 2020-09-30 2021-11-02 Robert Clayton Biomass pulp digester

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Publication number Priority date Publication date Assignee Title
US4844799A (en) * 1986-07-17 1989-07-04 Lee Chung Y Filtration apparatus having spaced-apart driving members for changing a size of a treatment zone
KR970010548B1 (ko) * 1991-09-24 1997-06-28 이사가키 기고우 가부시끼가이샤 스크류 프레스
JP2868146B2 (ja) * 1994-06-09 1999-03-10 株式会社石垣 スクリュープレスの外筒スクリーンの洗浄装置
AU759648B2 (en) * 1999-11-30 2003-04-17 Ishigaki Company Limited Screw press apparatus
JP2003033896A (ja) * 2001-07-17 2003-02-04 Kubota Corp スクリュープレスの外胴構造
JP3944723B2 (ja) * 2002-08-07 2007-07-18 株式会社石垣 濃縮機能を有するスクリュープレス
JP4472459B2 (ja) * 2004-08-11 2010-06-02 前澤工業株式会社 スクリュープレスのスクリーン洗浄装置
JP4427798B2 (ja) * 2005-04-14 2010-03-10 株式会社石垣 差速回転濃縮機における運転制御方法並びに運転制御装置
DE202010001758U1 (de) * 2010-02-02 2011-06-09 UTS Biogastechnik GmbH, 85399 Schneckenseparator
KR101106168B1 (ko) * 2011-09-30 2012-01-18 주식회사 이앤에프 스크류탈수기
US9561978B2 (en) * 2012-04-20 2017-02-07 Anaergia Inc. Sludge screw thickener with screen rotation during cleaning

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
HUE038801T2 (hu) 2018-11-28
EP2754552A1 (fr) 2014-07-16
PL2754552T3 (pl) 2018-12-31
US20160001516A1 (en) 2016-01-07
US10195806B2 (en) 2019-02-05
WO2014108349A1 (fr) 2014-07-17
ES2681047T3 (es) 2018-09-11

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