NO742497L - - Google Patents

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Publication number
NO742497L
NO742497L NO742497A NO742497A NO742497L NO 742497 L NO742497 L NO 742497L NO 742497 A NO742497 A NO 742497A NO 742497 A NO742497 A NO 742497A NO 742497 L NO742497 L NO 742497L
Authority
NO
Norway
Prior art keywords
vanes
chamber
cylinder
cylindrical
pressure
Prior art date
Application number
NO742497A
Other languages
Norwegian (no)
Inventor
A Mercier
Original Assignee
Fives Cail Babcock
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 Fives Cail Babcock filed Critical Fives Cail Babcock
Publication of NO742497L publication Critical patent/NO742497L/no

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B10/00—Production of sugar juices
    • C13B10/08—Extraction of sugar from sugar beet with water
    • C13B10/10—Continuous processes
    • C13B10/102—Continuous processes having rotatable means for agitation or transportation
    • C13B10/105—Rotating apparatus
    • 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
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/25—Supported filter elements arranged for outward flow filtration open-ended the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of 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
    • B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—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 multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—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 multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • 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
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/603—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by flow measuring
    • 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
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • 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
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/902—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
    • 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
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B01D29/945—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
    • 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
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • 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
    • B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
    • B01D33/37—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection
    • B01D33/39—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection concentrically or coaxially
    • 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
    • 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
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
    • 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
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
    • B01D33/722—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
    • 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
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B01D33/763—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
    • 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
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • 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
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/806—Accessories integrally combined with devices for controlling the filtration by flow measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Paper (AREA)

Description

Apparat'for ekstrahering ved hjelp av trykk av den væske som holdes tilbake i et hydratisert materiale, for eksempel pulp av roer _ _._ Apparatus for the extraction by pressure of the liquid retained in a hydrated material, for example beet pulp _ _._

Foreliggende oppfinnelse angår separering ved hjelp av trykk av den væske som foreligger i sterkt hydratiserte materialer, såsom pulp av roer fremkommet i sukkerindustrien.ved utgangen av diffusjonsapparater. The present invention relates to the separation by means of pressure of the liquid present in highly hydrated materials, such as beet pulp produced in the sugar industry, at the exit of diffusion devices.

Til denne operasjon anvender man vanligvis skruepresser som omfatter et sylinderisk kammer, hvor veggen består av en sikt og i hvis indre dreier seg en skrue som danner en stumpkjegleformet kjerne med en skrueformet gjenge. Tverrsnittet av det ringformede rom som er dannet mellom sikten og skruekjernen, avtar fra inngangen til utlopet, slik at det er mulig progressivt å oke trykket i dette rom. For samme formål kan den skrueformede gjenges stigning avtas fra inngangen mot utlopet. For this operation, screw presses are usually used which comprise a cylindrical chamber, the wall of which consists of a sieve and in the interior of which a screw rotates which forms a frustoconical core with a screw-shaped thread. The cross-section of the annular space formed between the screen and the screw core decreases from the entrance to the outlet, so that it is possible to progressively increase the pressure in this space. For the same purpose, the pitch of the helical thread can be decreased from the entrance towards the outlet.

I disse presser er således trykket fastlagt ved konstruk-sjonen og kan ikke reguleres i avhengighet' av kvaliteten av det pro-dukt som behandles. Forovrig forskyver det materiale som sKa"!<p>resses, seg parallelt med sikten og materialet i kontakt med sikten blir ikks. fornyet. Den væske som inneholdes i de materiallag som er lengst borte fra sikten, har således små muligheter for å nå sistnevnte på grunn av den lille gjennomtrengelighet av det pressede materiale, hvilket gjor ekstraheringen meget vanskelig. Endelig foregår rensingen av sikten bare en gang pr. omdreining, nemlig ved passering av skruegjengen. Imidlertid er dreiehastigheten for skruegjengen, hvilken avhenger av arbeidsbetingelsene, alltid meget lav og rensingen av sikten hindrer gjennomstrømningen av væsken. In these presses, the pressure is thus fixed by construction and cannot be regulated depending on the quality of the product being processed. Incidentally, the material that sKa"!<p>resses moves parallel to the sieve and the material in contact with the sieve is instantly renewed. The liquid contained in the material layers furthest away from the sieve thus has little chance of reaching the latter due to the small permeability of the pressed material, which makes the extraction very difficult. Finally, the cleaning of the sieve takes place only once per revolution, namely when passing the screw thread. However, the speed of rotation of the screw thread, which depends on the working conditions, is always very low and the cleaning of the sieve prevents the flow of the liquid.

Formålet med oppfinnelsen er å eliminere disse ulemperThe purpose of the invention is to eliminate these disadvantages

ved kjente apparater ved å frembringe det nodvendige trykk ved hjelp av en hjelpemateanordning som befinner seg utenfor trykkammeret og ved å sikre rensing av sikten og en blanding som tillater fornyelse av materialet i kontakt med sikten, ved hjelp av*dreibare skovler, hvis antall, profil og dreiehastighet kan velges for bedre tilpasning til funksjonene. by known devices by generating the necessary pressure by means of an auxiliary feeding device located outside the pressure chamber and by ensuring cleaning of the screen and a mixture that allows renewal of the material in contact with the screen, by means of*rotating vanes, the number, profile and turning speed can be selected for better adaptation to the functions.

Apparatet ifdlge foreliggende oppfinnelse består av to sylindriske siktende overflater anbragt konsentrisk og som danner et ringformet kammer hvor materialet holdes under trykk og forskyves kontinuerlig fra den ene ende til den annen av kammeret, idet den ene av de siktende overflater er ubevegelig og den annen dreier seg om sin akse, og oppfinnelsen utmerker seg ved at de to siktende overflater bærer skovler som skraper mot den motstående siktflate og er anbragt i sirkulære rekker, idet rekkene av faste skovler veksler med rekkene av dreibare skovler og disse s-kovler står skrått i forhold til siktflåtene, slik at materialet fjernes radialt og det kan erstattes av materiale som kommer fra et sted i kammeret fjernt fra overflaten, og i forhold til generatriser til disse flater for å utove på materialet en skyvekraft rettet fra innldpet mot utlopet av kammeret. Ifolge et annet trekk ved oppfinnelsen er skovlenes radiale plassbehov mindre enn halvparten av den radiale bredde av kammeret og det aksiale plassbehov for armene som bærer skovlene, er vesentlig mindre enn skovlenes lengde, hvilket muliggjor overlapping av de faste og bevegelige skovler. The apparatus according to the present invention consists of two cylindrical aiming surfaces arranged concentrically and which form an annular chamber where the material is held under pressure and is continuously displaced from one end to the other of the chamber, one of the aiming surfaces being stationary and the other rotating about its axis, and the invention is distinguished by the fact that the two aiming surfaces carry vanes that scrape against the opposite aiming surface and are arranged in circular rows, the rows of fixed vanes alternating with the rows of rotatable vanes and these s-vanes are inclined in relation to the screening floats, so that the material is removed radially and it can be replaced by material coming from a place in the chamber far from the surface, and in relation to the generatrices of these surfaces to exert on the material a thrust force directed from the inlet towards the outlet of the chamber. According to another feature of the invention, the radial space requirement of the vanes is less than half of the radial width of the chamber and the axial space requirement for the arms that carry the vanes is significantly less than the length of the vanes, which enables overlapping of the fixed and movable vanes.

Materialet fores inn under trykk i kammeret ved den eneThe material is fed under pressure into the chamber at one

av dettes ender, ved hjelp av en volumetrisk pumpe og slik at det går of its ends, using a volumetric pump and so that it goes

gjennom en åpning anordnet ved den annen ende og lukket av en bevegelig bunn som er elastisk påvirket slik a't den danner en ventil som opprettholder det onskede trykk i det indre av kammeret. through an opening provided at the other end and closed by a movable bottom which is elastically actuated so as to form a valve which maintains the desired pressure in the interior of the chamber.

De siktende flater er fortrinnsvis anbragt vertikalt, idet materialet innfores ved den ovre ende av kammeret og forlater dette ved dets nedre ende. I en særlig utforelsesform av oppfinnelsen er den ytre siktflate båret av en ubevegelig sylinder og den indre siktflate er båret av en dreibar sylinder, idet den ovre ende av det kammer som dannes mellom- de to sylindre, er lukket av en ubevegelig bunn og den nedre ende er lukket av en aksialt forskyvbar bunn som påvir-kes elastisk mot sin lukkestilling. Denne beveglige bunn er fort av et sylindrisk skjort fast forbundet med den ytre sylinder og koaksialt med denne, og hydrauliske sylindere forbundet med en hydropneu-matisk akkumulator soker å trykke bunnen mot sitt faste sete. Den bærer ruller som ruller på en indre sylindrisk overflate av den dreibare sylinder og tjener til å sentrere denne.. Foringen av den bevegelige bunn og sentreringen av den dreibare sylinder er utformet for å.tillate bunnen å stille seg skrått i forhold til et plan loddrett på sylinderens akse. The aiming surfaces are preferably arranged vertically, the material being introduced at the upper end of the chamber and leaving it at its lower end. In a particular embodiment of the invention, the outer viewing surface is supported by an immovable cylinder and the inner viewing surface is supported by a rotatable cylinder, the upper end of the chamber formed between the two cylinders being closed by an immovable bottom and the lower end is closed by an axially displaceable bottom which is acted upon elastically towards its closed position. This movable bottom is fast by a cylindrical skirt firmly connected to the outer cylinder and coaxially with this, and hydraulic cylinders connected to a hydropneumatic accumulator seek to press the bottom against its fixed seat. It carries rollers which roll on an inner cylindrical surface of the pivotable cylinder and serve to center it. The lining of the movable base and the centering of the pivotable cylinder are designed to permit the base to be inclined relative to a plane vertical. on the axis of the cylinder.

Den indre sylinder drives med dreiebevegelse ved hjelp av en ring som ved sin ovre ende er ubevegelig festet og tjener likeledes til å sentrere og understdtte samme. The inner cylinder is driven with a turning movement by means of a ring which is immovably fixed at its upper end and also serves to center and support the same.

Veggene av sylindrene er perforert for å tillate passering av væske som er filtrert gjennom de siktende overflater. Denne væske samles opp for det forste i en kapsling som omgir den faste sylinder og for det annet i det indre av den dreibare sylinder, hvorfra den tas ut ved hjelp av et sentralt ror tilkoplet dens bunn. The walls of the cylinders are perforated to allow the passage of liquid filtered through the screening surfaces. This liquid is collected firstly in an enclosure which surrounds the fixed cylinder and secondly in the interior of the rotatable cylinder, from which it is taken out by means of a central rudder connected to its bottom.

Det pressede materiale gjenvinnes i et kar anbragt under pressekammeret og.tas ut gjennom en eller flere åpninger boret i bunnen av dette kar, ved hjelp av skovler fast forbundet med den dreibare sylinder. The pressed material is recovered in a vessel placed below the press chamber and taken out through one or more openings drilled in the bottom of this vessel, by means of paddles firmly connected to the rotatable cylinder.

Oppfinnelsen vil bedre.forstås ut fra folgende detaljerte beskrivelse under henvisning til tegningene som viser et rent'eksempel og hvor fig. 1 er et sideriss delvis i snitt av et apparat for pressing av pulp utfort i samsvar med oppfinnelsen og .av den tilhøren-de matepumpe, idet snittet er tatt i et vertikalt plan som omfatter apparatets akse, og fig. 2 er et snitt av apparatet loddrett på dettes akse. The invention will be better understood from the following detailed description with reference to the drawings which show a pure example and where fig. 1 is a side view partially in section of an apparatus for pressing pulp out in accordance with the invention and of the associated feed pump, the section being taken in a vertical plane that includes the axis of the apparatus, and fig. 2 is a section of the device perpendicular to its axis.

Det på tegningene viste apparat består hovedsakelig avThe apparatus shown in the drawings mainly consists of

en ubevegelig sylinder eller stator 11 og én dreibar sylinder eller rotor 12 som avgrenser et ringformet, kammer 10 som er lukket ved sin ovre ende ved hjelp av en fast bunn 13 og ved sin nedre ende ved hjelp av en bunn som har et fast parti 24 og et bevegelig parti 25. Tetningspakninger 14 og 40 er anordnet mellom rotoren og bunnene respektive 13 og 2$. a stationary cylinder or stator 11 and one rotatable cylinder or rotor 12 defining an annular chamber 10 which is closed at its upper end by means of a fixed bottom 13 and at its lower end by means of a bottom having a fixed portion 24 and a movable part 25. Sealing gaskets 14 and 40 are arranged between the rotor and the bottoms 13 and 2$ respectively.

Sylinderen 11 er dannet av en hylse 20 forsynt med borin-ger og hvis indre overflate bærer et gitter 19, mot hvilket stotter seg en sikt 18. Gitteret 19 tillater sirkulasjon av den væske som er filtrert ved gjennomgang av sikten frem til boringene i hylsen. The cylinder 11 is formed by a sleeve 20 provided with bores and whose inner surface carries a grid 19, against which a sieve 18 rests. The grid 19 allows the circulation of the liquid that has been filtered by passing through the sieve to the bores in the sleeve.

Sylinderen 12 er dannet på samme måte av en perforert hylse 20', et gitter 19' og en sikt 18', men gitteret og sikten er montert på yttersiden av hylsen. The cylinder 12 is formed in the same way by a perforated sleeve 20', a grid 19' and a screen 18', but the grid and the screen are mounted on the outside of the sleeve.

Skovler 22 og 23 fast forbundet henholdsvis med rotorenVanes 22 and 23 firmly connected respectively to the rotor

og statoren, er montert i det indre av kammeret 10. De er anbragt i sirkulære rekker,og festet til de respektive hylser ved hjelp av armer, hvis aksiale plassbehov er merkbart mindre enn skovlenes lengde. Rekkene av faste skovler veksler med rekkene av bevegelige skovler og den radiale bredde av skovlene er mindre enn halvparten av den radiale bredde av kammeret 10, slik at det er mulig for de faste og bevegelige skovler å overlappe hverandre. and the stator, are mounted in the interior of the chamber 10. They are arranged in circular rows, and attached to the respective sleeves by means of arms, whose axial space requirement is noticeably less than the length of the vanes. The rows of fixed vanes alternate with the rows of movable vanes and the radial width of the vanes is less than half the radial width of the chamber 10, so that it is possible for the fixed and movable vanes to overlap each other.

Angrepskanten for disse skovler befinner seg tett inntil siktene 18 og 18', slik at de kan sikre deres rensing. De står skrått i forhold til sikten for å sikre rensing av det avsatte lag og fore dette mot det indre av kammeret 10. Den relative dreining av skovlene og siktene frembringer et overtrykk foran skovlene og et under-trykk bak disse som bevirker en radial forskyvning av materialet og tillater erstatning av de allerede ekstraherte lag med lag hvis ekstra-heringsgrad er mindre. The leading edge of these vanes is located close to the sieves 18 and 18', so that they can ensure their cleaning. They stand at an angle in relation to the screen to ensure cleaning of the deposited layer and guide this towards the interior of the chamber 10. The relative rotation of the vanes and the screens produces an overpressure in front of the vanes and an underpressure behind them which causes a radial displacement of the material and allows the replacement of the already extracted layers with layers whose degree of extra-hardening is less.

Disse skovler er dessuten skrå i forhold til generatriser til sylindrene for på materialet å utove en skyvekraft rettet nedover som tillater kompensering av trykkfallet som er et resultat av indre og ytre friksjon av materialet under dettes utstromning. These vanes are also inclined in relation to the generatrices of the cylinders in order to exert on the material a thrust force directed downwards which allows compensation of the pressure drop which is a result of internal and external friction of the material during its outflow.

Bunnen 24 består av en ring festet på en flens fast forbundet med statoren 11 og hvis indre kant har en storre diameter enn rotoren 12, slik at der skaffes en ringformet åpning 26. Denne er lukket ved hjelp av den bevegelige bunn 25 som trykkes mot et sete fast forbundet med bunnen 24 ved hjelp av hydrauliske sylindere 31. Bunnen 25 er sentrert på aksen for sylindrene 11 og 12 ved hjelp av en hylse 29, hvortil den er festet ved hjelp av armer 30, og som bærer en ring 28 montert glidende i det indre av et sj/lindrisk skjort 27 på bunnen 24. Den ytre overflate av ringen 28 har en sfærisk del, hvis radius er lik den for den indre overflate av skjortet 27. The base 24 consists of a ring attached to a flange firmly connected to the stator 11 and whose inner edge has a larger diameter than the rotor 12, so that an annular opening 26 is provided. This is closed by means of the movable base 25 which is pressed against a seat firmly connected to the base 24 by means of hydraulic cylinders 31. The base 25 is centered on the axis of the cylinders 11 and 12 by means of a sleeve 29, to which it is attached by means of arms 30, and which carries a ring 28 mounted slidingly in the interior of a cylindrical shirt 27 on the bottom 24. The outer surface of the ring 28 has a spherical part, the radius of which is equal to that of the inner surface of the shirt 27.

Sylindrene 31 bibeholdes under trykk ved hjelp av en hydrepneumatisk akkumulator hvis karakteristikk er valgt for å oppnå den dnskede trykkvariasjon i avhengighet av sylindrenes bevegelse og folgelig av graden av åpning av den bevegelige bunn. The cylinders 31 are maintained under pressure by means of a hydropneumatic accumulator whose characteristic is chosen to achieve the desired pressure variation in dependence on the movement of the cylinders and consequently on the degree of opening of the movable bottom.

Bunnen 25 bærer tre trinser eller ruller 37 anbragt med en vinkelavstand på 120 ° og som sikrer sentrering av rotoren i dens nedre parti. Det midtre plan for disse ruller faller sammen med det for bunnen 25 og for ringen 28 og deres rulleflate er buet og har en bueradius målt i det plan som inneholder deres akse, lik den for ro-torens sylindriske overflate, på hvilken de ruller. The base 25 carries three pulleys or rollers 37 placed at an angular distance of 120° and which ensure centering of the rotor in its lower part. The central plane of these rollers coincides with that of the base 25 and of the ring 28 and their rolling surface is curved and has a radius of curvature measured in the plane containing their axis equal to that of the cylindrical surface of the rotor on which they roll.

Den bevegelige bunn 25 oppforer seg som en ventil som åpner seg når de pressede materialer på denne utover en kraft som er stdrre enn den som utoves av sylindrene. Den beskrevne montasje gjor det således mulig å unngå at bunnen kiler seg fast når den står skrått. Ved normal funksjon er dens hellning ikke merkbar fordi det indre trykk er godt fordelt, men den kan bli merkbar hvis ett fremmedlegeme forblir fastkilt mellom den faste og den bevegelige bunn. The movable bottom 25 behaves like a valve which opens when materials are pressed onto it beyond a force greater than that exerted by the cylinders. The assembly described thus makes it possible to avoid the bottom getting wedged when it is at an angle. In normal operation, its tilt is not noticeable because the internal pressure is well distributed, but it can become noticeable if a foreign body remains wedged between the fixed and the movable bottom.

Den væske som har passert statorens vegg, blir gjenvun-net i en sylindrisk kapsling 4l som omgir statoren og tommes ved hjelp av en ror stuss 42 som munner ut i en ikke vist sirkulær opp-samler . The liquid which has passed the stator wall is recovered in a cylindrical enclosure 4l which surrounds the stator and is emptied by means of a rudder nozzle 42 which opens into a circular collector, not shown.

I det indre av rotoren vil den væske som har gått gjennom sikten 18' og hylsen 20' stromme ut gjennom et sentralt ror 43 som munner i et fast kar .44 og deretter tas ut gjennom en ledning 45.. In the interior of the rotor, the liquid that has passed through the sieve 18' and the sleeve 20' will flow out through a central tube 43 which opens into a fixed vessel .44 and is then taken out through a line 45..

De pressede materialer faller ned i et sirkulært kar 46 og blir ved hjelp av roterende skovler 47 som er fast forbundet med rotoren, skjovet videre mot åpninger 48, under hvilke er anbrage en ikke vist transportor. The pressed materials fall into a circular vessel 46 and, by means of rotating vanes 47 which are firmly connected to the rotor, are pushed further towards openings 48, below which a conveyor (not shown) is attached.

Rotoren er understottet og drevet med dreiebevegelse ved hjelp av en ring 51 ubevegelig festet til det ovre parti av rotoren og montert i et lager 50 festet til statoren. Rotoren kan være drevet ved hjelp av en tannhjulsmotor som driver et tannhjul i inn-grep med en fortanning festet på ringen. Driften kem være virkelig-gjort ved hjelp av et system med sperrehjul og sperreklinke som drives av hydrauliske sylindere. The rotor is supported and driven with rotary motion by means of a ring 51 immovably attached to the upper part of the rotor and mounted in a bearing 50 attached to the stator. The rotor may be driven by means of a gear motor which drives a gear in engagement with a toothing attached to the ring. The operation will be made real using a system with locking wheel and locking pawl operated by hydraulic cylinders.

Matningen av pressen sikres ved hjelp av en volumetrisk pumpe med to overlappende gjenger og en variabel hastighet og som på tegningen er betegnet med 6o, hvilken tillater en matning under trykk med variabel kapasistet. The feeding of the press is ensured by means of a volumetric pump with two overlapping threads and a variable speed and which is denoted by 6o in the drawing, which allows a feeding under pressure with variable capacity.

Trykket i det indre av kammeret 10 styres ved hjelp av sylindrene 31 som utover et mottrykk på bunnen 25. Dette mottrykk kan reguleres etter onske for å oppnå det indre trykk som svarer tii de beste ekstraheringsbetingelser i avhengighet av kvaliteten av det materiale som presses. The pressure in the interior of the chamber 10 is controlled by means of the cylinders 31 as a counter-pressure on the bottom 25. This counter-pressure can be regulated as desired to obtain the internal pressure which corresponds to the best extraction conditions depending on the quality of the material being pressed.

Reguleringene av tilforselskapasiteten gjor det mulig å variere oppholdstiden i pressen og fdlgelig ekstraheringsgraden og reguleringen av mottrykket ved utlopet tillater oppnåelsen av dette resultat ved optimale trykkforhold. The regulation of the supply capacity makes it possible to vary the residence time in the press and consequently the degree of extraction, and the regulation of the back pressure at the outlet allows the achievement of this result at optimal pressure conditions.

Skovlene 22 og 23 frembringer en radial bevegelse av materialet som sikrer en systematisk blanding som er gunstig for pres-singen av materialet med liten permeabilitet, særlig når det dreier seg om pulp av roer, som byr en betydelig hindring mot diffusjon av væske mot den siktende overflate. The vanes 22 and 23 produce a radial movement of the material which ensures a systematic mixing which is favorable for the pressing of the material with low permeability, especially when it concerns beet pulp, which offers a significant obstacle to the diffusion of liquid towards the sieve surface.

Claims (7)

1. Apparat for ekstrahering ved hjelp av trykk av den væske som holdes tilbake i et hydratisert materiale, bestående av to sylindriske siktende overflater anbragt konsentriske for å danne et kammer med konstant ringformet tverrsnitt, hvori materialet innfores og holdes under trykk og kontinuerlig forskyver seg fra den ene ende til den andre, idet en av de siktende overflater er ubevegelig og den andre dreier seg om sin akse, karakterisert ved at de to siktende overflater bærer skovler som skraper mot den motstående siktflate og er anbragt i sirkulære rekker, idet rekkene av faste skovler veksler med rekkene av dreibare skovler og disse skovler står skrått i forhold til siktflåtene, slik at materialet fjernes radialt og det kan erstattes av materiale som kommer fra et sted i kammeret fjernt fra overflaten, og i forhold til generatriser til disse flater for å utove på materialet en skyvekraft rettet fra inn-lopet mot utlopet av kammeret.1. Apparatus for extracting by pressure the liquid retained in a hydrated material, consisting of two cylindrical screening surfaces arranged concentrically to form a chamber of constant annular cross-section, into which the material is introduced and held under pressure and continuously displaced from one end to the other, with one of the aiming surfaces being stationary and the other revolving around its axis, characterized in that the two aiming surfaces carry vanes which scrape against the opposite aiming surface and are arranged in circular rows, the rows of fixed vanes alternate with the rows of rotatable vanes and these vanes are inclined in relation to the screening floats, so that the material is removed radially and it can be replaced by material coming from a place in the chamber far from the surface, and in relation to the generatrices of these surfaces to utow on the material a thrust force directed from the inlet towards the outlet of the chamber. 2. Apparat ifolge krav 1, karakterisert ved at skovlenes radiale plassbehov er mindre enn halvparten av den radiale bredde av kammeret, og det aksiale plassbehov for armene som bærer skovlene, er vesentlig mindre enn skovlenes lengde, hvilket muliggjor overlapping av.de faste og bevegelige skovler.2. Apparatus according to claim 1, characterized in that the radial space requirement of the vanes is less than half of the radial width of the chamber, and the axial space requirement for the arms that carry the vanes is significantly less than the length of the vanes, which enables overlapping of the fixed and movable shovels. 3. Apparat ifolge krav 1 eller 2, karakterisert ved at det innvendige trykk i kammeret er frembragt ved hjelp av en volumetrisk matepumpe tilkoplet kammerinnlopet.3. Apparatus according to claim 1 or 2, characterized in that the internal pressure in the chamber is produced by means of a volumetric feed pump connected to the chamber inlet. 4. Apparat ifolge krav 1, 2 eller 3, hvor aksen for sikt-flatene er vertikal, idet den ytre siktflate er båret av en ubevegelig sylinder mens den indre flate er båret av en dreibar sylinder og den nedre ende av det kammer som dannes mellom de to flater, er lukket ved en ringformet bunn, forskyvbar aksialt og elastisk påvirket mot sin lukkestilling, karakterisert ved at denne bunn er fort ved hjelp av et sylindrisk skjdrt fast forbundet med den ubevegelige sylinder og koaksialt med denne, idet foringene foregår ved hjelp av en ring som befinner seg i bunnens plan i det indre av skjdrtet og har en ytre kuleformet overflate, hvis radius er lik den for skjdrtets innvendige overflate.4. Apparatus according to claim 1, 2 or 3, where the axis of the viewing surfaces is vertical, the outer viewing surface being supported by an immovable cylinder while the inner surface is supported by a rotatable cylinder and the lower end of the chamber formed between the two surfaces, are closed by an annular bottom, axially displaceable and elastically influenced towards its closed position, characterized in that this bottom is quickly connected by means of a cylindrical shear to the immovable cylinder and coaxially with this, as the liners take place by means of a ring which is located in the plane of the bottom in the interior of the joint and has an outer spherical surface, the radius of which is equal to that of the internal surface of the joint. 5. Apparat ifolge krav 4>karakterisert ved at den nevnte bunn bærer ruller som ruller i det indre av en sylindrisk o del som forlenger den dreibare sylinder nedover og koaksialt med denne•5. Apparatus according to claim 4> characterized in that the said base carries rollers which roll in the interior of a cylindrical o part that extends the rotatable cylinder downwards and coaxially with it• 6. Apparat ifolge krav 5>karakterisert ved at rullene befinner seg i bunnens plan, idet deres ruileflate er buet og bueformens radius målt i et plan som inneholder deres akse, er lik den indre radius av nevnte sylindriske del.6. Apparatus according to claim 5> characterized in that the rollers are located in the plane of the bottom, as their rolling surface is curved and the radius of the arc, measured in a plane containing their axis, is equal to the inner radius of said cylindrical part. 7. Apparat ifolge krav 4, 5 eller 6, karakterisert ved at den dreibare sylinder er opphengt i en ring festet ved sin ovre ende og montert på lageret båret av den ubevegelige sylinder.7. Apparatus according to claim 4, 5 or 6, characterized in that the rotatable cylinder is suspended in a ring attached at its upper end and mounted on the bearing carried by the stationary cylinder.
NO742497A 1973-07-10 1974-07-09 NO742497L (en)

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DE (1) DE2433017A1 (en)
ES (1) ES428105A1 (en)
FR (1) FR2236652B1 (en)
GB (1) GB1477702A (en)
IT (1) IT1015531B (en)
NL (1) NL7409359A (en)
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CH602161A5 (en) * 1975-12-11 1978-07-31 Escher Wyss Ag
GB2247187B (en) * 1990-08-24 1994-04-27 Chen Tsong Hae Liquid filter assembly
DE4128210C2 (en) * 1991-08-26 1994-04-21 Mann & Hummel Filter Filters for liquids
US6833071B2 (en) 2002-05-15 2004-12-21 Sean R. Duby Displacement filter apparatus
CN111035960B (en) * 2019-12-31 2023-06-13 昆明弘承食品科技有限公司 Extraction equipment with prefilter function for slurry and application method of extraction equipment
CN113209677B (en) * 2021-05-10 2023-04-11 湖南景涂乐新材料有限公司 Convenient type water proof coating filter-pressing equipment

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DE2433017A1 (en) 1975-01-30
ES428105A1 (en) 1976-07-16
NL7409359A (en) 1975-01-14
FR2236652B1 (en) 1976-09-17
BE817498A (en) 1974-11-04
GB1477702A (en) 1977-06-22
IT1015531B (en) 1977-05-20
FR2236652A1 (en) 1975-02-07

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