Вибрационная сортировка

Очиститель картонной массы

Фильтрующее устройство

VERFAHREN UND VORRICHTUNG ZUM FRAKTIONIEREN VON SUSPENSIONEN.

Knotenfaenger

Schwingsieb

Verfahren zur Herstellung von harzarmem Zellstoff

Haengelenker fuer Siebe, Foerdereinrichtungen o. dgl.

Schaumflotationsvorrichtung zur Altpapier-Regenerierung

Improvements in or relating to flat shaking separating screens for the manufacture of wood pulp, cellulose, esparto and the like

... 434,069. Strainers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Voith, W., Voith, H., and Voith, H., (trading as Voith, J. M., [Firm of]), Heidenheim-on-Brenz, Wiirtemberg, Germany. Dec. 11, 1934, No. 35612. [Class 46] [See also Group II] Apparatus for sifting or straining materials suspended in liquid, such as wood pulp &c. comprises a screen 1 having a gyrating motion at the feed end and an upwardly and forwardly inclined reciprocating motion at the discharge end, in combination with a trough 3 having an overflow for the screened material which is set so that its surface is maintained about'the level of the mean position of the screen. In the example described with reference to the Figure, the screen is driven directly by eccentrics 6 on a shaft 7 and is supported at its forward end by inclined links 9. According to a modification, the screen is supported by leaf springs from a bar in turn supported on helical springs and carries a shaft with rotary unbalanced weights. The forward ...

Process and apparatus of implementation of a method for purifying fibrous vegetable matters.

SIEB ZUM TRENNEN VON FESTSTOFFEN AUS EINER SUSPENSION

SORTIERGERAET, INSBESONDERE FUER PAPIERFASERSTOFF- SUSPENSIONEN

WASCHFILTER ZUR AUFBEREITUNG VON FASERSTOFFSUSPENSIONEN

VORRICHTUNG ZUM ABTRENNEN VON NICHT ERWUENSCHTEN TEILCHEN AUS EINEM FASERSTOFF

SORTER, IN PARTICULAR FOR PULP SUSPENSIONS

FILTER FOR THE SEPARATION FROM SOLIDS FROM A SUSPENSION

DEVICE FOR SEPARATING FROM NOT DESIRED PARTICLES FROM A FIBROUS MATERIAL

DEVICE TO SEVEN OF A SUSPENSION, IN PARTICULAR PULP SUSPENSION

SORT DEVICE FOR STOFFSUSPENSIONEN FOR PAPER TRADE

SORTIERER

DEVICE FOR THE TREATMENT OF A CELLULOSE

PROCEDURE AND DEVICE FOR THE TREATMENT OF A FIBRE SUSPENSION.

PROCEDURE FOR THE ASSORTMENT OF FIBROUS MATERIAL SUSPENSION AS WELL AS SORT DEVICE FOR ITS EXECUTION

PROCEDURE FOR SUSPENDING AND CLEANING STÖRSTOFFHALTIGEN PAPER RAW MATERIALS

Filter sheet metal or filter plate for the production of fiber boards u.dgl.

Sheet filter to wet seven of particles from fibrous material, e.g. fibrous material bloatings

Apparatus for washing of pulp

SCREENING APPARATUS FOR PAPER MAKING STOCK

Apparatus for screening papermaking stock comprises two annular flat screening plates arranged in parallel spaced relation to form a screening chamber therebetween which is bounded on its outer periphery by a cylindrical wall, and wherein a rotor includes vane portions which extend into this screening chamber to agitate the stock so that particles of sufficiently small size can pass through the screening plates into annular compartments outside the screening plates from which they flow into a peripheral chamber having an outlet port. The screening chamber includes an annular space which is surrounded by the accepts chamber and is radially beyond the vane portions of the rotor wherein reject material collects for discharge through an outlet tube which extends through the accepts chamber to the outside of the apparatus. The apparatus as a whole comprises a main assembly which includes one of the screening plates and the rotor, and a subassembly which includes the other screening plate and ...

MECHANICAL PULP FRACTIONATION WITH A SPRAY DISK FILTER

A method for removing coarse fibers from mechanical pulp comprising the steps of spraying the pulp containing coarse fibers under pressure against a rotating disk filter such that a first fraction of the pulp passes through the filter and constitutes an accepts fraction and a second fraction of said pulp is retained on the filter and constitutes an enriched concentration of the coarse fibers and constitutes a rejects fraction, and removing the accepts fraction and the rejects fraction from the filter.

FEEDING SUSPENSION TO A DISC FILTER

A disc filter assembly includes a number of filter discs mounted in a vat by a horizontal shaft with an inter-disc volume between the discs. A feed mechanism is provided that makes it possible to feed the pulp suspension onto the surface of the liquid, directed toward the most concentrated pulp in the vat, in such a manner that the feed is insensitive to fluctuations of the suspension surface level in the vat. This is accomplished by feeding the suspension into the vat interior directly into each of the inter-disc volumes, as by using a chute (which may have the approximate configuration of a hollow triangular parallelepiped) for each volume. A header for supplying pulp suspension to the chutes may be mounted on or spaced from the sidewall of the vat, or above the vat.

METHOD FOR FABRICATING A FLAT OR CENTRIPETAL WIRE

Method of making a flat or centripetal wire of the type comprising a plurali ty of bars in substantially axially parallel arrangement relative to one another and including wire slots contained in between. Said method comprises providing a plurality of bars an d providing at least two bar support members. Each bar support member includes laterally open recesses provided along a longitudinal edge of the bar support member. Each bar support member is capable of being flexed from an initial state to a final state. At the initial state, t he longitudinal edge has an initial radius of curvature such that the laterally open recesses are open sufficiently to receive the bars and wherein at the final state, the longitudinal edge has a final radiu s of curvature larger than the initial radius of curvature such that the laterally open recesses a re sufficiently closed to exert a clamping force upon the bars retained in said recesses. The bars are inserted into the laterally open recesses of the bar ...

Einrichtung zur Erzeugung von Schwingungen mit Mitteln zum Ändern der Schwingungsamplitude während des Betriebes.

Planknotenfänger.

Vorrichtung zur Behandlung von faseriger Aufschwemmung

Siebblech zur Herstellung von Faserplatten und ähnlichen Erzeugnissen

PROCEDURE FOR THE FRACTIONATION OF FROM WASTE PAPER WON FIBROUS MATERIAL AS WELL AS PLANT FOR THE EXECUTION OF THE PROCEDURE.

PROCEDURE AND DEVICE FOR CLEANING A FIBROUS MATERIAL SUSPENSION.

FILTER FOR THE SEPARATION FROM SOLIDS FROM A SUSPENSION.

SORTER, IN PARTICULAR FOR FIBRE SUSPENSIONS OF THE PAPER INDUSTRY.

WASH FILTER FOR THE PROCESSING OF WASTE PAPER.

Pressure screen frame capable of being rapidly assembled and used

APPAREIL POUR LE TRAITEMENT DE VIEUX PAPIERS

FILTRE DE LAVAGE POUR INSTALLATION DE TRAITEMENT DE VIEUX PAPIERS. L'APPAREIL COMPREND UNE CHAMBRE DE CIRCULATION 5 DANS LAQUELLE EST DISPOSE UN FILTRE CYLINDRIQUE ET PLAT DE LAVAGE 4, DEVANT LEQUEL EST DISPOSE UN ROTOR DE CIRCULATION 7. A L'OPPOSE DU FILTRE EST AGENCEE UNE CHAMBRE D'ADMISSION 9 DE DIAMETRE PLUS REDUIT, DANS LAQUELLE DEBOUCHENT UNE TUBULURE CENTRALE ET COAXIALE D'ADMISSION 57 POUR L'EAU DE LAVAGE ET UNE TUBULURE TANGENTIELLE D'ADMISSION 56 POUR LES FIBRES EN SUSPENSION. LA PATE TRAITEE EST EVACUEE PAR UNE TUBULURE 59 EN AVAL DU FILTRE, TANDIS QUE LES IMPURETES SONT EXTRAITES A TRAVERS UNE AUTRE TUBULURE TANGENTIELLE 58 RACCORDEE A LA CHAMBRE DE CIRCULATION 5. APPLICATION A L'INDUSTRIE DE TRAITEMENT DES VIEUX PAPIERS.

Device for sorting and cleaning the scrap paper, the rags, and other matters similar

PROCEDE ET INSTALLATION DE PREPARATION ET D'EPURATION DE MATIERE FIBREUSE

Dans l'installation représentée, il est prévu entre la sortie de refus 23, 58 du classeur de courant principal 20, 50 et le défibreur (seconde partie de l'appareil 24 ou de l'appareil 60) un autre classeur sous pression (première partie de l'appareil 24 ou de l'appareil 60) pour le refus, le tamis de ce second classeur comportant des orifices de plus petites dimensions que coin du classeur de courant principal et son volume prévu pour le refus étant relié au défibreur. L'installation est destin& à alimenter une machine à papier.

Apparatus of sifting

INFRARED RADIATION FOR THE MANUFACTURE OF PULP

SCREENING DEVICE.

CE DISPOSITIF EST DU TYPE CONSTITUE ESSENTIELLEMENT D'UN CARTER FERME1 AVEC UN RACCORD POUR L'ENTREE2 A UNE EXTREMITE, POUR LE REFUS3 A UNE CERTAINE DISTANCE DE CELLE-CI ET POUR LE PASSE ENTRE LES DEUX, AINSI QUE D'UN ROTOR24 MONTE ROTATIF DANS CE CARTER ET PRESENTANT DES NERVURES25 QUI, AU COURS DE LA ROTATION DE CE ROTOR, SE DEPLACENT LE LONG D'UNE SURFACE DE CRIBLAGE6 DISPOSEE DANS LE CARTER ET PRESENTANT DES ORIFICES CONVENABLES, AVEC UNE CHAMBRE DE PASSE SITUEE SUR SA FACE ARRIERE. LE PROBLEME POSE CONSISTE A PERMETTRE UN CRIBLAGE AU MOINS DOUBLE. SUIVANT L'INVENTION, LA SURFACE DE CRIBLAGE EST DIVISEE EN AU MOINS DEUX PARTIES AVEC POUR CHACUNE DE PASSE7, 11 SITUEE SUR LA FACE ARRIERE ET PRESENTANT CHACUNE UNE SORTIE SEPAREE4, 5. L'INVENTION TROUVE UNE APPLICATION AVANTAGEUSE DANS LE CRIBLAGE DES PATES DE FIBRES DE CONSISTANCE MOYENNE. THIS DEVICE IS OF THE TYPE CONSTITUTES ESSENTIALLY OF A CLOSED CASING1 WITH A CONNECTION FOR INLET2 AT ONE END, FOR REFUSAL3 AT A CERTAIN DISTANCE FROM IT AND FOR THE PASS BETWEEN THE TWO, AS WELL AS A ROTOR24 ROTARY MOUNTED IN THIS CRANKCASE AND PRESENTING RIBS25 WHICH, DURING THE ROTATION OF THIS ROTOR, MOVE ALONG A SCREENING SURFACE6 ARRANGED IN THE CRANKCASE AND PRESENTING SUITABLE ORIFICES, WITH A PASS CHAMBER LOCATED ON ITS REAR FACE. THE PROBLEM IS TO ALLOW AT LEAST DOUBLE SCREENING. FOLLOWING THE INVENTION, THE SCREENING SURFACE IS DIVIDED INTO AT LEAST TWO PARTS WITH EACH PASS7, 11 LOCATED ON THE REAR SIDE AND EACH SHOWING A SEPARATE OUTLET4, 5. THE INVENTION FINDS AN ADVANTAGEOUS APPLICATION IN THE SCREENING OF PASTA. MEDIUM CONSISTENCY FIBERS.

CLASSIFIER APPARATUS/DEBUGGER PASTE

PERFECTIONING IN ESPALHADOR OF FLOW, DEVICE TO DIRECT A MATERIAL FLOW TO BE BOLTED THROUGH A SURFACE OF EXHAUSTION OF AGUA AND PROCESS OF FEEDING MATERIAL TO A SURFACE OF TREATMENT OF MATERIAL, IN GENERAL PARABOLICALLY CURVE

SILPLAT OCH SILANORDNING

FILTER SECTOR OF A DISC FILTER

The invention relates to a filter sector (1) of a filter disc (3), which rotates about a hollow shaft (2), for a disc filter for separating liquids from a suspension, in particular from a fibrous material suspension (4), consisting of a first (5) filter plate and an opposing second (6) filter plate which are perforated and profiled and delimit the interior (7) of the filter sector (1), said filter plates being held by two common, circumferentially interspaced plate retainers (8) which run radially and which enclose the radially running edges of the filter plates (5, 6) starting from a base part (9) which is connected to the hollow shaft (2). In order to improve the efficiency with as little expenditure as possible, the profiling of the filter plates (5, 6) extends, at least in part, into the plate retainer (8).

Apparatus for cleaning fibers

The fibers of recycled paper are cleaned by agitating the slurry containing the fibers to maintain the fibers in suspension, and contacting the slurry with wash water to remove ink and other contaminants. The apparatus includes a passageway having screens forming opposite sides of the passageway. Agitators are within the passageway, and create enough turbulence to prevent fibers from settling or agglomerating. Channels adjacent to each screen carry wash water, and pump pressure creates a pressure differential across the screens to cause the wash water to contact the slurry and to be removed from the passageway.

METHOD OF PRODUCING CELLULOSE NANOFIBRILS

A cellulose nanofibrils production method comprising the steps of: identifying a desired level of cellulose nanofibrils pulp purity, partially refining pulp to produce a cellulose nanofibrils pulp purity between 5% and 15% less than the desired desired purity, and then separating out the cellulose nanofibrils from the longer fibers to produce the desired level of cellulose nanofibrils pulp purity. 1. A cellulose nanofibrils production method comprising the steps of: identifying a desired level of cellulose nanofibrils pulp purity , partially refining pulp to produce a cellulose nanofibrils pulp purity between 5% and 20% less than the desired desired purity , and then separating out the cellulose nanofibrils from the longer fibers to produce the desired level of cellulose nanofibrils pulp purity.2. A cellulose nanofibrils production method according to wherein the cellulose nanofibrils are separated from the longer fibers by a screening plate.3. A cellulose nanofibrils production method according to wherein the pulp to be refined has a feed consistency of no greater than 1.25%.4. A cellulose nanofibrils production method according to wherein the pulp to be refined has a feed consistency of less than 1%. There are some applications of Nano-Fibrillated Cellulose (NFC) that require greater purity or less long fiber than others. Conventional production of this purer product requires longer refining times to reach that condition. NFC, also commonly referred to as Microfibrillated Cellulose (MFC), Micro-Nano Fibrillated Cellulose (MNFC), Cellulose Nanomaterials, etc., are small cellulose fibers on the order of about 0.25 to 0.05 mm in length.The knotter uses a barrier, or screen cylinder, with perforations in the 8 to 12 mm diameter range being most common, although perforations as small as 6 mm or as large as 16 have been used. The most common size is 9.5 mm diameter. Pulp stock passes through this screen cylinder, while the larger pieces of uncooked wood chips cannot ...

Method for increasing the wear resistance of housings in waste paper recycling equipment

Waste paper recovery drum, has anti-abrasion welded lining made of carbon, chrome and niobate or retro fitted as pre-made panel A suspension of waste paper is broken down for recycling in a rotating metal drum (2) with esp. an anti-wear lining (3) made of a highly abrasion-resistant material (3) covering virtually all of and attached to the exposed drum inner face. The lining covers at least 90 per cent of the metal drum inner face. In a first embodiment the lining is applied by welding as a coating (3) containing carbon, chrome and niobate and is welded to a flat metal panel (2) and then bent to shape. In this embodiment, the weld beading (4) is orientated transverse to the direction of bending. In a second embodiment the lining consists of a pre-shaped panels which are pre-cut to shape and then welded in place or secured by fixtures.

Screening device for wet screening of pulp suspensions

Sheet metal sieve, for the classification of a suspension of paper fibres, has low-wear battens on front face attached by screw to rear face support A sieve assembly processes a wet suspension of paper fibre. The assembly has a flat sieve panel (1) with numerous apertures (7) and a rear detachable support (2). The front has countersunk detachable countersunk low-wear cross-pieces (3). Each cross-piece has a hole for a screw (8) which engages in a matching hole and thread (12) in the support (2). The sheet metal sieve (1) is circular or ring-shaped. The cross-pieces (3) are placed in a radial array and located in grooves (4) whose width (b1) is greater than that of the cross-piece width (b2). The sieve sheet metal panel is sub-divided into a number of radial interlocking segments. Each segment has two steps (11) of equal height.

PROCESS AND CONTAINER FOR STACKING PAPER FIBER STOCK

PROBLEM TO BE SOLVED: To provide a process for stacking and diluting paper fiber stock by stacking a high-consistency stock in a 1st volume chamber 1 for a defined dwell time, conveying the stock to a 2nd volume chamber 2 and diluting the stock to a state extractable as a suspension S through a filter 5 furnished with a rotor 4, thereby enabling sure stacking of the high-consistency paper fiber stock and, at the same time, enabling the dilution and pumping with a simple means requiring a narrow installation space. SOLUTION: A flow 8 of the paper fiber stock in the axial direction of a spiral screw 7 is formed by the spiral screw 7 placed directly in front of the rotor and the suspension is guided by the flow to a direction to separate the suspension from the filter. COPYRIGHT: (C)2003,JPO ...

METHOD FOR TREATING WASTE PAPER

PURPOSE: To extremely improve efficiency in separation effects on foreign materials such as tacky agents and adhesives in cleaning steps and obtain reclaimed pump without any trouble in sheet-forming steps by specifying the amount of the foreign materials in a pulp slurry prepared by disintegrating waste paper containing the above-mentioned foreign materials. CONSTITUTION: Waste paper containing tacky agents, adhesives and/or plastics is initially disintegrated. In the process, the disintegration degree of the waste paper is regulated so as to provide the total number of ≤10 pieces of the tacky agents, adhesives and plastics in the pulp based no 20g dried pulp in passing the resultant pulp slurry prepared by disintegrating the aforementioned waste paper through an experimental flat screen equipped with a screen having slits with 8/1000 inch width. The pump slurry with the specified content of the foreign materials such as the tacky agents is then subjected to cleaning treatment with a screening ...

РАЗДЕЛИТЕЛЬНОЕ УСТРОЙСТВО

Предложенная группа изобретений относится к области разделения составляющих текучей среды, причем такая среда может быть жидкой, газообразной или твердой. Может быть использовано в области рециклинга и/или переработки промышленных отходов, более конкретно в области изготовления бумажной массы или свежей или вторичной целлюлозы для производства писчей бумаги, газетной бумаги, туалетной бумаги, оберточной бумаги и т.д. Устройство для разделения составляющих текучей среды включает разделительный элемент для упомянутых составляющих, участвующий в определении границ, над и/или под разделительным элементом, замкнутую камеру, с которой соединен по меньшей мере один трубопровод. Трубопровод включает по меньшей мере одно активируемое уплотнительное средство, которое после активации способно, по меньшей мере частично, закрывать и открывать упомянутый трубопровод. Устройство снабжено средством управления активацией упомянутого уплотнительного средства, способным управлять закрыванием и открыванием ...

Verfahren zur Sortierung von Faserstoffsuspension sowie Siebvorrichtung zu seiner Durchführung

Schuettelnder Planknotenfaenger fuer die Papier- und Celluloseherstellung mit auf-gehaengtem Knotenauslauf, der eine hin und her gehende Bewegung ausfuehrt

Massenausgleich fuer Schwingsiebe

Paper sorting sieve - consists of drum on horizontal axis to divide the tank into two chambers

Paper fibre suspension assembly is a tank divided into two chamebrs by a drum sieve, where the drum is on a horizontal axis. A section of the first chamber, downsteram of the drum, has a cylindrical form. Material feed opening, from the feed channel, connected to the first outlet opening for the first outlet channel, opens at a tangent to the circle of the cylindrical form. Part of the first outlet channel, or the whole channel, is connected to the first outlet opening, within a projection of the feed channel. A housing forming the section of the prim. chamber is upstream of the rotating drum, on its driven side, while an opening of a section of the prim. chamber is displaced from the drum side of the housing and downstream of the drum. An opening of the sec. chamber is closed by a cover. Pref. the cover for the opening in the second chamber is in two parts, to deflect relatively light foreign matter through a second outlet opening, positioned opposite the centre of the drum. A third outlet ...

Sieb II

Die Erfindung betrifft ein Sieb zur Behandlung eines flüssigen bis pastösen Mediums bestehend aus mehreren Schichten (5, 6, 7) und mit einer Vielzahl von Sieböffnungen (1) sowie einer entgegen der Durchströmrichtung (2) weisenden Zulaufseite (3) und einer in Durchströmrichtung (2) weisenden Ablaufseite (4). Dabei soll eine möglichst gleichbleibende Sortierwirkung bei möglichst konstantem Durchsatz dadurch erreicht werden, dass die Ablaufseite (4) von einer Schicht (6) mit verminderter Adhäsion gebildet wird.

Vorrichtung zum mechanischen Reinigen der Schlitzplatten von Membransichtern fuer Zellstoff, Papierstoff o. dgl.

Continuous disc filter

... 957,991. Filters for liquids. IMPROVED MACHINERY Inc. Feb. 1, 1962 [Feb. 6, 1961], No. 3835/62. Heading BID. A continuous disc filter has a slurry-containing bath 20, Figs. 1 and 3, and comprises a core assembly 23 supported to turn on a horizontal axis and having a series of parallel longitudinal discharge conduits 120 each tapered to provide a conduit of increasing cross-section in the direction of discharge, parallel discs 36 each comprising sections 90 covered by filter screens, and a suction exhaust conduit from each section 90 connecting with an associated discharge conduit and with a common exhaust manifold housing 136 (Fig. 12). Fig. 6 shows the root of a filter section 90, having radially and transversely extending grooves such as 108 between walls 102 and the filter screens. The grooves communicate with one of the conduits 120 through an exhaust conduit 110 in the section. The core assembly is rotated from a driven pulley 46 by a worm drive on a shaft 48, Fig. 1. A jet spray 68 ...

IMPROVEMENTS IN OR RELATING TO PULPING APPARATUS

Method of assorting, dewatering or the like of fibrous material suspended in water

A suspension (e.g. cellulose pulp) from which water and, optionally, fine components such as short resin fibres and resin are to be removed, is sprayed in the form of at least one divergent jet against a screen wall arranged substantially transversely to the jet axis, the screen wall having a greater area than the area of impact of the jet. On the opposite side of the screen wall a vacuum is maintained, and is adjusted so that material from the jet is caused to form a layer of residue on the area around the area of impact, this residue layer being driven outwards along the screen wall by the jet. A suitable vacuum is 5 metres of water column.

Paper pulp screen

A screen for paper pulp suspensions has an inlet 3, an outlet 6 for the cleaned suspension, a rejects outlet 7, a disc-like sieve 2 between the inlet and the outlet 6 and a revolving rotor 9. The rotor has sieve-cleaning propeller-like blades 10 having an angle of incidence which is such that a rotating low or high pressure area is created between the blades 10 and the surface of the sieve. The blades can be arranged upstream or downstream of the sieve and are twisted so that their angle with the sieve decreases radially outwards. ...

PARALLEL FLOW VIBRATING SCREEN SEPARATOR

... 1,260,187. Vibrating screen separator; sifting apparatus. SWECO Inc. 26 March, 1969 [3 April, 1968], No. 15744/69. Headings B1D and B2H. A screen assembly, for separating liquids and solids or grading dry solids, comprises a stack of flat screens 30, 40, 41, 42 mounted on a common plate 4, which is vibrated by motor 7 with out-of-balance weights 8, 9, at least some screens operating in parallel and having incoming material supplied thereto from pipe 79. In Fig. 1, all screens operate in parallel and material passes on to a pair of dishes 66, 67, with apertures whose effective area is adjusted by rotating one dish upon the other to determine the fraction of material which falls therethrough. This fraction is divided by baffles 57, 56, which project inwards and divert successive fractions of material through apertures 65, 64 on to screens 41, 40. Material which overflows from dishes 66, 67 falls on to screen 42, and material passing baffle 56 falls on to screen 30. The fraction passing through ...

PROCEDURE FOR THE PRODUCTION OF A FLAT OR A CENTRIPETAL FILTER

VERFAHREN UND VORRICHTUNG ZUR TRENNUNG EINER SUSPENSION, VORZUGSWEISE EINE FASERSUSPENSION

SIEBVORRICHTUNG ZUM UEBERFUEHREN, BEI UEBERDRUCK, VON CELLULOSEFASERN AUS EINEM SUSPENSIONSFL¨SSIGKEITSSTROM IN EINEN ANDEREN STROM

Rotating drum screen

Die Erfindung betrifft eine rotierende Trommel (1) zur Behandlung von Faserstoff (2), deren Rotationsachse (3) höchstens 30° zur Horizontalen geneigt ist, in die an einer ersten Stirnseite (4) mit Wasser vermischter Faserstoff (2) zugeführt wird, welcher innerhalb der Trommel (1) mittels Hebe- und Förderelementen (6) durchmischt und von der ersten (4) zur zweiten Stirnseite (5) transportiert wird. Dabei soll der Bildung von Verspinnungen dadurch wirksam entgegengewirkt werden, dass an der Innenseite der Trommel (1) Verwirbelungselemente (7) angebracht sind, die von der Innenseite mindestens 50% weiter zur Rotationsachse (3) hin reichen als die Hebe- und Förderelemente (6).

ARRANGEMENT FOR THE PROCESSING OF WASTE PAPER.

SORT DEVICE FOR STOFFSUSPENSIONEN FOR PAPER TRADE

FILTER FOR THE SEPARATION FROM SOLIDS FROM A SUSPENSION

FILTERING DEVICE FOR TRANSFERRING, WITH POSITIVE PRESSURE, CELLULOSE FIBERS FROM A SUSPENSION FLOW DIRECTION INTO ANOTHER RIVER

WASH FILTER FOR THE PROCESSING OF FIBROUS MATERIAL SUSPENSIONS

SCREENING

Means for filtering and fractionation of suspensions containing fibres, fibre fragments, fines and other particles

Adjustable control valve system for rotating disc filter

METHOD FOR SCREENING OR FRACTIONATION

PULPING APPARATUS INCLUDING IMPROVED ROTOR

DRILLING MUD COMPRISING A HIGH SURFACE AREA MAGNETITE CONCENTRATE

A DRILLING MUD COMPRISING A HIGH SURFACE AREA MAGNETITE CONCENTRATE A mixture of iron oxides obtained by pyrite roasting is subjected to magnetic separation. The magnetic fraction so obtained is a magnetite concentrate which is highly efficient in absorbing hydrogen sulfide evolved from oil drilling wells. It can be incorporated into drilling muds even in non-alkaline medium.

DEVICE FOR A ROTARY FILTER

A rotary filter, formed by a number of annular filter discs, mounted substantially parallel on a driving shaft, for the uptake and dewatering of fibre suspension from a container, fibre cakes being formed, adhering to the outer sides of the filter discs. The filter is provided with spraying nozzles, arranged in a removal zone for removal of said fibre cake. The invention consists of cake supporting elements provided in the removal zone for supporting the upper loosened part of the fibre cake to prevent it from folding out and rolling during the preceding removal process, to thereby enhance the complete removal of the cake.

RUPTURE WARNING PROTECTED STRAINING APPARATUS

METHOD FOR FABRICATING A FLAT OR CENTRIPETAL WIRE

The invention concerns a method for the fabrication of wires comprised of a plurality of bars of substantially axially parallel arrangements with wire slots contained in between and with at least two wire support elements provided with laterally open recesses; the bars are in the area of their ends inserted in the laterally open recesses of the bar support elements and fastened. The invention is characterized by the following features: the fastening is effected in positive fashion, by clamping due to plastic deformation of the bar support elements.

STRAINER FOR PAPER MAKING

Bulk material device for pulper

Bamboo pulp shale shaker

Vibrating motor type vibrating screen

METHOD FOR FRACTIONATION OF FIBROUS MATERIAL PRODUCED FROM WASTE PAPER AND INSTALLATION FOR CARRYING OUT SAID METHOD

Apparatus to purify suspensions of fibrous matter and matters similar

PRETREATMENT APPARATUS FOR REMOVING PITH FROM CORNSTALK, PULP MANUFACTURING METHOD USING CORNSTALK, AND PAPER MANUFACTURING METHOD USING CORNSTALK PULP

A pretreatment apparatus for removing pith from cornstalks and separating husks therefrom includes a casing that receives cornstalks in a free-fall manner through an upper side thereof and allows the corn stalks to be discharged through a lower side thereof, and a rotor inserted into the casing and rotating inside the casing to hit cornstalk chips. The rotor includes a shaft inserted into the casing to be rotated by external force, a cover member holding the shaft so as to allow rotation of the shaft therein and connected to the entirety or part of an open upper side of the casing, and a hitting unit formed on a circumference of the shaft and hitting the corn stalks input into the casing. 1. A pretreatment apparatus for removing pith from cornstalks and separating husks therefrom , comprising:a casing which receives cornstalks in a free-fall manner through an upper side thereof and allows the corn stalks to be discharged through a lower side thereof; and a shaft inserted into the casing to be rotated by external force,', 'a cover member holding the shaft so as to allow rotation of the shaft therein and connected to the entirety or part of an open upper side of the casing, and', 'a hitting unit formed on a circumference of the shaft and hitting the corn stalks input into the casing., 'a rotor inserted into the casing and rotating inside the casing to hit cornstalk chips, the rotor comprising2. The pretreatment apparatus of claim 1 , wherein the hitting unit comprises a plurality of plates disposed in an axial direction of the shaft claim 1 , and a plurality of bars disposed along an edge of each plate.3. The pretreatment apparatus of claim 2 , wherein the hitting unit comprises a hitting rib detachably attached to the bar and hitting the cornstalks falling through the lower side of the casing.4. The pretreatment apparatus of claim 3 , wherein the bar or the hitting rib has a curved section.5. The pretreatment apparatus of claim 2 , wherein the shaft is connected to a ...

PROCESSING OF RECYCLED MATERIAL

An apparatus and a method for processing recycled material, comprising a first pulper () having an inlet () for receiving recycled material (), a water inlet () for producing a mixture of water and particles of recycled material, a first rotor unit (R) configured to slush recycled material and a first screen plate () connected to a first outlet () configured to extract a first portion of recycled material from the first pulper (); a last pulper () having a reject washer configured to remove coarse rejected recycled material from the last pulper (); and an upper channel () from the first pulper () to the last pulper (), wherein the mixture of water and particles of recycled material is configured to flow over from the first pulper () to the last pulper (). The apparatus comprises a of the last pulper () being lower than or at the same level as the first pulper (); a lower channel () at the bottom of the first pulper () extending to the last pulper (); and a gate () at the lower channel (), configured to cause, when open, the mixture of water and particles of recycled material to flush to the last pulper ().

ROTOR UNIT FOR PROCESSING RECYCLED MATERIAL

A rotor unit in a vessel containing a mixture of water and particles of recycled material, comprising a rotor unit body (); a screen plate () installed to the vessel; a rotor () connected to the rotor unit body () and configured to rotate inside the vessel, comprising at least two wings () configured to slush recycled material in a rotating action and at least two foils () configured to clean the screen plate () by rotating above the screen plate (); a space () around the rotor () defined by a rotor body (); pipework () configured to bring diluting water from outside the vessel to the space () around the rotor (); wherein the rotor body () defining the space () around the rotor () comprises an opening () allowing the diluting water to pass through the opening () towards the mixture of water and particles of recycled material. The opening () at the rotor body () is at the same level with the lower edge of the at least two wings () or the at least two foils (), wherein the diluting water is allowed to pass through the opening () to the screen plate (). 1. A rotor unit in a vessel containing a mixture of water and particles of recycled material , comprising:a rotor unit body;a screen plate installed to the rotor unit body, configured to separate accepted recycled material penetrated through the screen plate and rejected recycled material remaining in the vessel;an outlet for the accepted recycled material in the lower portion of the vessel;a rotor connected to the rotor unit body and configured to rotate inside the vessel, comprising at least two wings configured to slush recycled material in a rotating action and at least two foils configured to clean the screen plate by rotating above the screen plate;a space around the rotor defined by a rotor body; and 'the rotor body defining the space around the rotor comprises at least one opening allowing the diluting water to pass through the at least one opening towards the mixture of water and particles of recycled material ...

PULPER FOR CIRCULATING A FIBROUS STOCK SUSPENSION

A pulper for circulating a fibrous stock suspension. The pulper includes at least one screen, having a screen surface which is provided with screen openings, and over which a rotor passes. The rotor is formed by a rotor head, to which a plurality of rotor blades are attached on the outer circumference. The rotor circle of the screen, which is passed over by the rotor wings, includes a plurality of bar-shaped elevations. In the process, pulping is to be improved, while wear is to be minimized, in that the angle of intersection between the working edge of the rotor blades pointing in the direction of rotation and the shear edge of the elevations pointing counter to the direction of rotation does not decrease radially outwardly. 1. A pulper for circulating a fibrous stock suspension which is present in a vat , comprising:at least one screen including a screen surface with a plurality of screen openings therein, the at least one screen further including a plurality of bar-shaped elevations, each elevation defining a shear edge that points in a first direction;a rotor that is configured to pass over the screen surface, the rotor being formed by a rotor head and a plurality of rotor blades attached to the rotor head, each rotor blade defining a working edge that points in a second direction which is opposite to the first direction, the second direction being a direction of rotation of the rotor,wherein an angle of intersection between the working edge of each rotor blade and the shear edge of each elevation remains constant radially outwardly, at least in sections, and/or increases, at least in sections.2. The pulper according to claim 1 , wherein each working edge has a length claim 1 , wherein the angle of intersection remains constant radially outwardly at least across two-thirds of the length of each working edge.3. The pulper according to claim 2 , wherein the angle of intersection remains constant radially outwardly across the entire length of each working edge.4. ...

SHEET MANUFACTURING APPARATUS AND METHOD FOR MANUFACTURING SHEET

A sheet manufacturing apparatus includes comprises a screening unit configured to screen a defibrated material obtained by defibration treatment, and a sheet forming unit configured to form a sheet with the defibrated material screened with the screening unit. The screening unit has a first screening unit to which a plurality of first openings are provided and a second screening unit to which a plurality of second openings larger than the first openings are provided, and the defibrated material is screened by the first screening unit and the second screening unit. The defibrated material is screened at one of either the first screening unit or the second screening unit and thereafter screened at the other, and the sheet forming unit forms the sheet with the defibrated material that does not pass through the first openings and does pass through the second openings. 1. A sheet manufacturing apparatus , comprisinga screening unit configured to screen a defibrated material obtained by defibration treatment, anda sheet forming unit configured to form a sheet with the defibrated material screened by the screening unit,the screening unit having a first screening unit to which a plurality of first openings are provided and a second screening unit to which a plurality of second openings larger than the first openings are provided, the defibrated material being screened by the first screening unit and the second screening unit,the defibrated material being screened by one of the first screening unit and the second screening unit, and thereafter screened by the other of the first screening unit and the second screening unit, andthe sheet forming unit being configured to form the sheet with the defibrated material that does not pass through the first openings and passes through the second openings.2. The sheet manufacturing apparatus as set forth in claim 1 , whereinthe first screening unit is movable, andthe first screening unit is configured to move faster than the second ...

Paper material refining apparatus

내용 없음. No content.

Production process of harmless regenerated high-grade double-ash fiber special paper

本申请涉及一种无害化再生高档双灰纤维特种纸的生产工艺，属于纸张生产的领域，包括以下步骤：S1.将原料加入水力碎浆机，进行水力碎浆，得到碎浆液；S2.将碎浆液加入高浓除渣器，除去泥沙，剩余为粗浆液；S3.将粗浆液加入斜筛机，分离出纸浆液和粗渣；S4.纸浆液运送至下一步工序，粗渣通过回用装置运送回水力碎浆机；本申请具有原料利用率，减少浪费的效果。

Process and an installation for the klimination by the floatation of impurities in the form of solid particles contained in a liquid

The impurities in the form of solid particles contained in a liquid is eliminated in the floating container(1) by the floating. The floating container(1) comprises flow-inlet port and air babbles mixing chamber(8). The fluid flows through the mixing chamber walls which has many through-holes, through which air stream is supplied. Flow velocity is adjusted and air bubbles volume is changed by the distance between two walls.

Method for treating broken paper in papermaking

本发明公开了一种造纸损纸的处理方法，首先通过损纸碎浆机对损纸进行粉碎，得到损纸浆料，并送入损纸塔暂存；然后通入疏解机构，疏解机构通过搅拌单元对损纸浆料进行进料和搅拌，并推送其进入疏解单元，通过疏解单元对损纸浆料进行再次疏解；再通过筛分机构对疏解后的损纸浆料进行筛分过滤，将筛分得到的损纸良浆送回混合浆池进行配浆，而后参与进行抄纸工序；本发明通过设置疏解机构和筛分机构，对造纸生产过程中产生的损纸浆料进行疏解合并筛分处理后得到良浆，而后直接加入混合浆池，送入配浆系统抄纸使用，避免了资源浪费。

APPARATUS FOR PROCESSING OLD PAPERS

FILTRE DE LAVAGE POUR INSTALLATION DE TRAITEMENT DE VIEUX PAPIERS. L'APPAREIL COMPREND UNE CHAMBRE DE CIRCULATION 5 DANS LAQUELLE EST DISPOSE UN FILTRE CYLINDRIQUE ET PLAT DE LAVAGE 4, DEVANT LEQUEL EST DISPOSE UN ROTOR DE CIRCULATION 7. A L'OPPOSE DU FILTRE EST AGENCEE UNE CHAMBRE D'ADMISSION 9 DE DIAMETRE PLUS REDUIT, DANS LAQUELLE DEBOUCHENT UNE TUBULURE CENTRALE ET COAXIALE D'ADMISSION 57 POUR L'EAU DE LAVAGE ET UNE TUBULURE TANGENTIELLE D'ADMISSION 56 POUR LES FIBRES EN SUSPENSION. LA PATE TRAITEE EST EVACUEE PAR UNE TUBULURE 59 EN AVAL DU FILTRE, TANDIS QUE LES IMPURETES SONT EXTRAITES A TRAVERS UNE AUTRE TUBULURE TANGENTIELLE 58 RACCORDEE A LA CHAMBRE DE CIRCULATION 5. APPLICATION A L'INDUSTRIE DE TRAITEMENT DES VIEUX PAPIERS. WASHING FILTER FOR OLD PAPER TREATMENT PLANT. THE APPLIANCE INCLUDES A CIRCULATION CHAMBER 5 IN WHICH IS PROVIDED A CYLINDRICAL FILTER AND WASHING PLATE 4, IN FRONT OF WHICH IS A CIRCULATION ROTOR 7. OPPOSITE THE FILTER IS AN INLET CHAMBER 9 OF LOWER DIAMETER , IN WHICH THERE ARE A CENTRAL AND COAXIAL INLET TUBING 57 FOR THE WASHING WATER AND A TANGENTIAL INLET TUBING 56 FOR THE FIBERS IN SUSPENSION. THE TREATED PULP IS EVACUATED THROUGH A TUBING 59 DOWNSTREAM OF THE FILTER, WHILE IMPURITIES ARE EXTRACTED THROUGH ANOTHER TANGENTIAL TUBING 58 CONNECTED TO THE CIRCULATION CHAMBER 5. APPLICATION TO THE OLD PAPER PROCESSING INDUSTRY.

DEVICE FOR SEPARATING NON-DESIRED PARTICLES PRESENT IN A FIBER PASTE

CE DISPOSITIF COMPREND UN CARTER DANS LEQUEL EST MONTE ROTATIF UN ARBRE 10 ET QUI EST CONSTITUE D'UNE PREMIERE CHAMBRE PRESENTANT UNE ENTREE 2 POUR LA PATE ET UNE SORTIE 6 POUR LES PARTICULES NON DESIREES, UNE SECONDE CHAMBRE PRESENTANT UNE SORTIE 4 POUR LA PATE DONT ONT ETE ESSENTIELLEMENT EXTRAITES LES PARTICULES NON DESIREES, ET UNE OUVERTURE MENAGEE ENTRE CES CHAMBRES. LE PROBLEME POSE CONSISTE A EVITER UN ENDOMMAGEMENT PROVOQUE PAR DES PARTICULES NON DESIREES. SUIVANT L'INVENTION, UN DISQUE 13 FIXE SUR L'ARBRE EST MONTE TOURNANT DANS L'OUVERTURE, EN FORMANT UNE FENTE 15 ENTRE SA PERIPHERIE ET LA PERIPHERIE DE L'OUVERTURE, ET UN DISPOSITIF 16, DISPOSE AVANT LE DISQUE, EST MONTE ROTATIF EN MEME TEMPS QUE CE DISQUE ET EST EQUIPE D'ORGANES EN FORME DE DENT QUI TRAVERSENT LA FENTE SUIVANT LA DIRECTION RADIALE. L'INVENTION TROUVE UNE APPLICATION AVANTAGEUSE DANS LA SEPARATION DES PARTICULES NON DESIREES PRESENTES DANS LES PATES DE FIBRES. THIS DEVICE INCLUDES A CASING IN WHICH IS ROTATING A SHAFT 10 AND WHICH CONSISTS OF A FIRST CHAMBER PRESENTING AN INPUT 2 FOR THE DOUGH AND AN OUTPUT 6 FOR UNWANTED PARTICLES, A SECOND CHAMBER PRESENTING AN OUTPUT 4 FOR THE DOUGH OF WHICH HAVE BEEN ESSENTIALLY EXTRACTED UN DESIRED PARTICLES, AND AN OPENING BETWEEN THESE ROOMS. THE PROBLEM IS TO AVOID DAMAGE CAUSED BY UNWANTED PARTICLES. FOLLOWING THE INVENTION, A DISC 13 FIXED ON THE SHAFT IS MOUNTED ROTATING IN THE OPENING, FORMING A SLOT 15 BETWEEN ITS PERIPHERY AND THE OPENING PERIPHERY, AND A DEVICE 16, ARRANGED BEFORE THE DISC, IS ROTATING MOUNTED AT THE SAME TIME AS THIS DISC AND IS EQUIPPED WITH TOOTH-SHAPED ORGANS THROUGH THE SLIT IN THE RADIAL DIRECTION. THE INVENTION FINDS AN ADVANTAGEOUS APPLICATION IN THE SEPARATION OF UNWANTED PARTICLES PRESENTED IN FIBER PASTA.

DEVICE FOR SORTING SUSPENSION OF MATERIAL FOR THE MANUFACTURE OF PAPER

L'INVENTION CONCERNE UN DISPOSITIF DE TRIAGE DES MATIERES SERVANT A LA FABRICATION DU PAPIER. LE DISPOSITIF COMPREND UN BOITIER 1 DONT L'ENVELOPPE PERIPHERIQUE 2 EST SOUS LA FORME D'UN CORPS DE REVOLUTION SUR L'UN DES COTES EXTREMES DUQUEL SE TROUVE UN TAMIS 3. DES DEFLECTEURS 17 DEPASSANT DANS LA CHAMBRE INTERNE DU BOITIER 1 SONT DISPOSES SUR LA PAROI EXTREME 13 DU BOITIER 1 QUI EST A L'OPPOSE DU TAMIS 3. LE BOITIER COMPORTE UN ROTOR 7 DONT LES BRANCHES 6 SONT MISES EN MOUVEMENT LE LONG DU TAMIS 3. APPLICATION A LA PREPARATION DES MATIERES UTILISEES LORS DE LA PRODUCTION DU PAPIER. THE INVENTION RELATES TO A DEVICE FOR SORTING MATERIALS USED IN PAPER MANUFACTURING. THE DEVICE INCLUDES A BOX 1 WHOSE PERIPHERAL ENCLOSURE 2 IS IN THE FORM OF A REVOLUTION BODY ON ONE OF THE EXTREME SIDES OF WHICH A SIEVE IS LOCATED 3. DEFLECTORS 17 protruding in the internal chamber of the box 1 are located on THE EXTREME WALL 13 OF THE BOX 1 WHICH IS OPPOSITE THE SIEVE 3. THE BOX INCLUDES A ROTOR 7 WHOSE BRANCHES 6 ARE MOVED ALONG THE SIEVE 3. APPLICATION TO THE PREPARATION OF MATERIALS USED IN PAPER PRODUCTION .

METHOD AND DEVICE FOR SORTING A MIXTURE OF PAPER PULP AND IMPURITIES

PRESSURE-PURPOSE PERFORATED ROTATING FLAT DISC PLATE FOR MEDIUM CONSISTENCY PRODUCTS AND SCREENING METHOD

L'INVENTION A POUR OBJET UN PROCEDE ET UN APPAREIL DE TAMISAGE DE LA PATE A PAPIER OU D'UNE SUSPENSION SIMILAIRE D'UNE CONSISTANCE D'ENVIRON 6 A 15. ON FAIT PASSER LA PATE DANS UNE CHAMBRE 12 AYANT UN TAMIS 18 SOUS FORME D'UN PLATEAU PLAT ET ON FLUIDISE LA PATE PAR ROTATION D'UN DISQUE 23 PORTANT DES AILETTES 30 A COTE DU TAMIS; LE DISQUE PEUT PERMETTRE LA CIRCULATION DES SUBSTANCES A REJETER DANS LA CHAMBRE; CETTE CHAMBRE PEUT COMMUNIQUER AVEC UNE SECONDE CHAMBRE CONTENANT UN TAMIS ET UN DISQUE SIMILAIRES, LA SORTIE DES SUBSTANCES A REJETER DE LA SECONDE CHAMBRE ETANT EN COMMUNICATION AVEC L'ENTREE DE LA SUSPENSION DANS LA PREMIERE CHAMBRE. TAMISAGE DES PATES A PAPIER POUR LES DEBARRASSER DES IMPURETES. THE SUBJECT OF THE INVENTION IS A PROCESS AND APPARATUS FOR SCREENING PAPER PULP OR A SIMILAR SUSPENSION OF A CONSISTENCY OF ABOUT 6 TO 15. THE PULP IS PASSED THROUGH A CHAMBER 12 HAVING A SIEVE 18 IN THE FORM OF A FLAT TRAY AND THE DOUGH IS FLUIDIZED BY ROTATION OF A DISC 23 CARRYING FINS 30 NEXT TO THE SIEVE; THE DISK MAY ALLOW THE CIRCULATION OF SUBSTANCES TO BE REJECTED INTO THE CHAMBER; THIS BEDROOM CAN COMMUNICATE WITH A SECOND BEDROOM CONTAINING A SIMILAR SCREEN AND DISK, THE OUTLET OF THE SUBSTANCES TO BE REJECTED FROM THE SECOND BEDROOM BEING IN COMMUNICATION WITH THE ENTRY OF THE SUSPENSION IN THE FIRST BEDROOM. SIEVING PAPER PULP TO REMOVE IMPURITIES.

PRESSURE PERFORATED ROTARY FLAT SIEVE AND SCREEN APPARATUS FOR MEDIUM CONSISTENCY PRODUCTS AND SCREENING METHOD

Pulper is used in production of environmental protection cow hide vermicelli boxboard paper

本发明属于碎浆机技术领域，尤其是一种环保牛皮挂面箱板纸生产用碎浆机，针对现有的板纸生产用碎浆机在对纸浆进行打碎，打碎的纸浆不够彻底，且操作过于繁杂，需要多步骤的对纸浆进行破碎筛选的问题，现提出如下方案，其包括壳体，所述壳体的顶部固定安装有进料斗，所述壳体的一侧固定安装有电机，电机的输出轴上固定安装有第一转杆，所述壳体的内壁上固定安装有定位板，定位板上转动连接有第二转杆，定位板上开设有出料孔，第二转杆与第一转杆传动连接。本发明操作简单，使用方便，能够对纸浆进行破碎同时还能进行过滤筛选，同时还能对筛选出来的粗浆进行再次破碎，方便人们对纸浆的利用。

Device for cleaning and/or moistening surfaces or spaces, in particular for peeling off the filter cakes from filter plates in paper manufacturing

In a device for cleaning and/or moistening surfaces or spaces, for precipitating dust or foams, in particular for peeling off the filter cakes from filter plates in paper manufacture, pipe branches start from a spray liquid feed pipe and serve to hold spray cans which apply the liquid to the object to be cleaned or moistened. A cylindrical housing is releasably attached to the connection part of the pipe branch, which serves to feed the liquid, in the manner of a T-element and has a radial recess in which a nozzle having a widened portion is arranged in such a way that the nozzle outlet located at the apex point or approximately at the apex point of the widened portion projects into the interior of the cylindrical housing. The cylindrical housing is penetrated axially by a manually operable cleaning device for the nozzle outlet. By means of such a device it is possible to clean individual contaminated or blocked nozzles without the entire system having to be shut down for this purpose. The contaminated or blocked nozzles remain in their mounted position during the cleaning process. Since as a result of this the outage times of the entire system can be virtually reduced to zero, it is now possible to a very large extent to dispense with the expensive fresh water which was used previously to a certain extent and with the equally expensive systems for cleaning and processing circulation water. Instead, the unrestricted use of circulation water containing impurities is possible.

Wire cloth and method of producing the same

Adjustable control valve system for rotating disc filter and method of operating the system

A control system for the vacuum cut-off valve of a rotating disc or drum filter is provided. The control system includes an actuator that is connected to the vacuum cut-off valve for adjusting the rotation of the vacuum cut-off valve with respect to the core. The actuator is linked to a controller which receives communications from a vacuum sensor that senses the level of vacuum inside the vacuum box. The controller sends signals to the actuator to either move the vacuum cut-off valve forward (or to a higher position) or rearward (or to a lower position) in response to the vacuum or pressure level inside the vacuum box.

A disc filter and a method for feeding a pulp suspension into a disc filter

Apparatus and method for treating recycled material

Processing of recycled material

An apparatus and a method for processing recycled material, comprising a first pulper (3) having an inlet (2) for receiving recycled material (1), a water inlet (26) for producing a mixture of water and particles of recycled material, a first rotor unit (R1) configured to slush recycled material and a first screen plate (18) connected to a first outlet (20) configured to extract a first portion of recycled material from the first pulper (3); a last pulper (8) having a reject washer configured to remove coarse rejected recycled material from the last pulper (8); and an upper channel (4) from the first pulper (3) to the last pulper (8), wherein the mixture of water and particles of recycled material is configured to flow over from the first pulper (3) to the last pulper (8). The apparatus comprises a bottom of the last pulper (8) being lower than or at the same level as the first pulper (3); a lower channel (40) at the bottom of the first pulper (3) extending to the last pulper (8); and a gate (45) at the lower channel (40), configured to cause, when open, the mixture of water and particles of recycled material to flush to the last pulper (8).

A screening device

Dehydration unit for fluid dough

Strainer device for cellulose digester

A strainer device for separating liquid from a suspension of fibrous material in a cellulose digester. The strainer plate consists of flat annular members separated by concentric slots. Rhombic shaped cleaning members attached to a rotary shaft move in the slots to keep them open and push back particles tending to clog them.

Rotor unit for processing recycled material

本发明涉及一种在容纳水与回收材料颗粒的混合物的容器中的转子单元，其包括：转子单元本体(19)；安装在容器上的筛板(18)；与转子单元本体(19)连接并且构造成在容器内旋转的转子(78)，其包括构造成以旋转动作对回收材料碎浆的至少两个翼板(81)和构造成通过在筛板(18)上方旋转来清洁筛板(18)的至少两个箔片(82)；由转子本体(77)限定的围绕转子(78)的空间(89)；管道(21)，其构造成将稀释用水从容器外部输送到围绕转子(78)的空间(89)；其中，限定围绕转子(78)的空间(89)的转子本体(77)包括开口(76)，从而允许稀释用水经开口(76)流向水与回收材料颗粒的混合物。转子本体(77)处的开口(76)位于与所述至少两个翼板(81)的下部边缘或所述至少两个箔片(82)相同的高度处，其中允许稀释用水经开口(76)流向筛板(18)。

FIBERFRAKTIONERINGSANORDNING.

Device for hanging up shaken Masc u. like

Pulper with a screening sheet and uses of such a pulper

The pulper (1) has a perforated plate (2), an agitator (3) that is arranged over the perforated plate, a drain outlet that is provided above the perforated plate and another drain outlet that is provided below the perforated plate. The pulper is provided with a closed area that is set under positive pressure, where balls are provided. The balls are made of poly-vinyl chloride.

Apparatus for treating papermaking pulp

658,526. Treating paper pulp. CONSOLIDATED MACHINE TOOL CORPORATION. Aug. 31, 1948, No. 22980. Convention date, Sept. 9, 1947. [Class 96] In a machine for carrying out continuously the process of Specification 660,570, paper pulp admitted at 26 is swept by a moving head 25 over a draining plate 40 on to a roughened plate 70 and another e.g. roughened plate 100 is mounted over them so that it can be moved towards them to press the pulp and across them to roll it. The inlet 26 may be in the middle of the plate 40 which may be surrounded by the plate 70 and the plate 100 may be moved eccentrically about an axis 84 extending in the direction of that of the head 25. The latter may have arms 28 which may curve spirally, may be close to the plate 40 and may have sloping upper surfaces. The plate 70 may have holes leading into annular channels connected to pipes 73 through which liquid may be obtained from or supplied to the pulp. One plate, e.g. plate 70 may be made in adjustable sections. The plates 70 and 100 may have toothed working surfaces and some teeth may be inclined thereto, pointing, for example, away from the inlet. The inclined teeth may be pyramidal and may be arranged symmetrically. The plate 100 may be moved periodically toward and from the plate 70 as by a pair of fluid-operated pistons 120 reciprocating in cylinders 121, Fig. 14, and connected to rocking plates 130 and 131 themselves connected through gimbals 140 and 142 with the plate 100. Fluid may be supplied to one end of each cylinder 121 through a valve 202, Fig. 17, a third cylinder 175 being connected through a valve 200 with the said end of each cylinder 121, a piston 176 being reciprocated in the cylinder 175 as by a cam 187 &c. Fluid may also be supplied to all three cylinders through a reciprocating valve 167 actuated as by a cam 170 and when the valves 202 and 167 are closed the three cylinders form part of a closed system in which movement of the piston 176 is transmitted to the pistons ...

Patent FR2005785A1

A rotor unit for processing materials to be recycled

본 발명은 재활용되는 재료의 입자들과 물의 혼합물을 포함하는 베슬에서의 로터 유닛에 관한 것이며, 이 로터 유닛은 로터 유닛 본체(19); 베슬에 설치되는 스크린 플레이트(18); 로터 유닛 본체(19)에 연결되고 그리고 베슬 내측에서 회전하도록 구성되는 로터(78)─회전 작동시에 재활용되는 재료를 슬러싱하도록 구성되는 적어도 2개의 윙들(81) 및 스크린 플레이트(18) 위에서 회전함으로써 스크린 플레이트(18)를 세정하도록 구성되는 적어도 2개의 포일들(82)을 포함함─; 로터 본체(77)에 의해 규정되는 로터(78) 주위에 있는 공간(89); 베슬 외측으로부터 로터(78) 주위에 있는 공간(89)으로 희석수를 가져오도록 구성되는 파이프워크(21)를 포함하며; 여기서 로터(78) 주위에 있는 공간(89)을 규정하는 로터 본체(77)는, 개구(76)를 포함하며, 개구(76)는 희석수가 재활용되는 재료의 입자들과 물의 혼합물을 향하여 개구(76)를 통해 통과하는 것을 허용한다. 로터 본체(77)에 있는 개구(76)는 적어도 2개의 윙들(81) 또는 적어도 2개의 포일들(82)의 하부 에지와 동일한 높이에 있으며, 희석수는 개구(76)를 통해 스크린 플레이트(18)를 통과하도록 허용된다.

METHOD OF EXPERIENCE AND APPARATUS FOR SILVERING SUSPENSIONS OF MEDIUM CONSISTENCY

Patent JPS62148600U

Screen segment for filters for thickening fiber suspensions

Abstract In a sector-shaped screen segment for disk filters or thickeners with a folded screen for thickening fiber sus-pensions comprising a frame, two screen carriers and a screen resting on the outer sides of the screen carriers, manufacture is rendered simpler and less expensive by the frame and the screen carriers forming an integral molded part in which the screen is embedded in the molding pro-cess.

DEVICE FOR THE TREATMENT OF OLD PAPER.

Pulp screen plate

Process and device for diffusing flow

DEVICE FOR SCREENING A SUSPENSION, IN PARTICULAR PAPER FIBER FIBER SUSPENSION

Means for defibrating and sorting pulp in paper and cellulose industry

A means for defibrating and sorting pulp in paper and cellulose industry, comprising a defibrating means (1,2) consisting of a rotor (2) and a stator (1), wherebetween is established a defibrating zone, and of a sorter (3,4) consisting of another rotor (3) and another stator (4), wherebetween is established a sorting zone, and said stator (4) of the sorter being formed to be sieve-like, and said means comprising a pulp feed (6), accept removal (7) and reject removal (8). At present, defibrating and sorting processes have to be carried out using separate apparatus, which is expensive and space-consuming. With the aid of the present invention, the problem is solved in that the angle (α) between the centre-line of the shaft (9) of the rotor (2) of the defibrating means (1,2) and the defibrating zone is 5 to 45° and the angle (β) between the sorting zone and the shaft (9) of the rotor (3) of the sorter (3,4) is 75 to 105°, and that the defibrating and the sorting processes take place in the same pulp space (5).

SCREEN DEVICE

Filter for paper pulp

ANORDNING FOER BEHANDLING AV FIBERHALTIGA SUSPENSIONER

Patent FR2128967A5

Sieve assembly to separate foreign bodies from a fiber suspension in a paper making process has a profiled sieve setting up vortices in incoming suspension

In a paper making process a sorting assembly removes foreign bodies from a fibrous suspension. The assembly has a separation chamber with a suspension inlet, a clean suspension outlet, and a discharge for foreign bodies. The separation chamber is sub-divided into two by a sieve. The sieve is profiled on the suspension inlet and reject material side. The profiled sieve sets up vortices in the incoming suspension. The sieve surface may be flat, cambered or corrugated with peaks and troughs of between 0.3 and 1.5 mm. The sieve is a perforated plate with slits. The incoming suspension impinges on the slots at an angle of between 70 and 110 degrees. The plate may be sheet metal, ceramic or plastic and bears an anti-wear coating. Also claimed is a multi-stage sorting assembly.

Apparatus for fractionating fiber suspensions

Apparatus for cleaning fibrous suspensions

Pulp screen

Method of and apparatus for flow spreading

Abstract of the Disclosure Flow spreading method and apparatus particularly adapted for use with a geneally parabolic, slotted screening or dewatering surface, which redimensions the cross-sectional shape of a flow of material from a relatively narrow width, deep depth flow to a relatively shallow depth, wide width flow approximately equal to the width of the surface to which the flow is delivered. The apparatus includes a curved plate pre-ferably having a substantially constant radius of curvature and a conduit which directs the material against the curved plate non-tangentially with respect to its surface to induce a smooth but rapid redirection and hence, redimensioning of the flow cross-sectional configuration. The conduit feeding the material may have at least its terminal portion constructed of a flexible material which allows the conduit outlet to be pressed against the surface of the curved plate and deformed somewhat to enhance flow spreading while still permitting the passage of relatively large objects through the conduit.

Screen apparatus for transferring cellulose fiber from one suspension stream to other suspension stream under high pressure atmosphere

DEFIBRATION AND SORTING DEVICE IN THE PAPER AND CELLULOSE INDUSTRY.

Screen device

SORTING DEVICE FOR A MIXTURE OF PAPER PULP AND CONTAMINANTS.

Dispositif de triage d'un mélange de pâte à papier et de contaminants du genre formé d'un volume globalement cylindrique séparé en deux volumes (1, 2) par une paroi (3) comportant une grille calibrée, la pâte à papier contaminée étant admise par une ouverture (4) du volume d'entrée (1) située dans la paroi (6) opposée à la paroi (3) de séparation, la pâte à papier nettoyée étant évacuée par une canalisation de sortie (10) débouchant dans le volume de sortie (2) tandis que les contaminants sont éliminés par une sortie (7) du volume d'entrée (1), caractérisé en ce qu'une hélice de brassage (5) est prévue près de la surface amont de la paroi (3) de séparation tandis qu'une hélice de nettoyage (11) est prévue près de la surface avale de la paroi (3) de séparation. Device for sorting a mixture of paper pulp and contaminants of the kind formed from a generally cylindrical volume separated into two volumes (1, 2) by a wall (3) comprising a calibrated grid, the contaminated pulp being admitted through an opening (4) of the inlet volume (1) located in the wall (6) opposite the separation wall (3), the cleaned paper pulp being discharged through an outlet pipe (10) opening into the volume outlet (2) while the contaminants are removed by an outlet (7) of the inlet volume (1), characterized in that a stirring propeller (5) is provided near the upstream surface of the wall (3 ) separation while a cleaning propeller (11) is provided near the downstream surface of the separation wall (3).

Method for fractionating and processing a fibre suspension

A method for fractioning and processing a paper fiber suspension (S), to give fiber-enriched fiber fraction(s) (R12) and fines-enriched fines fraction(s) (A2) involves a first wet sieving (1) to obtain a long fiber retentate fraction (R1) and a short fiber permeate fraction (A1); and a second wet sieving (2) of the retentate, to enrich fines in the permeate to give the fines fraction (A2) and enrich fibers in the retentate to give a fiber fraction (R2).

Paper pulp filter equipment of waste paper recovery processing

本发明公开了一种废纸回收处理的纸浆过滤装置，包括支撑底座，所述支撑底座上轴承连接有转辊的两端，所述传送带上安装有2个定位框，且2个定位框上分别连接有集料容器和集杂容器，所述支撑底座的中部上端连接有支撑板，且支撑板的上端安装有进料斗，所述支撑板的中部贯穿有轴端，且轴端的外端键连接有摇杆，所述轴端的内端连接于过滤筒的外侧，且轴端的外侧通过第一皮带传动结构与转辊的外侧相连接。该废纸回收处理的纸浆过滤装置能使得滤网上下移动，从而使得滤网在弹簧的作用下产生振动，并在其上下移动的过程中，使得搅拌叶对滤网上的纸浆进行搅拌，有利于提高纸浆的过滤效率，且能对滤网上的杂质进行收集处理。

Tramp material separator

ABSTRACT OF THE INVENTION Separator for separation of unwanted particles present in fibre pulp, consisting of a housing with two chambers, between which a slot (15) is formed between a stationary ring (14) and a rotating disc (13), in front of which slot a wheel (16) equipped with tooth-like devices (30) rotates. Before the passage of the fibre pulp through the slot the wheel throws out the unwanted particles to an outlet (6), while the accepted pulp with increased speed passes through the slot to the second chamber, where it is discharged by means of a device (18) like a pump wheel. The separator will primarily be used within the fibre pulp industry in order to prevent unwanted particles damaging the following machinery and equipment.

Screening apparatus

Fiberizer of papermaking stock suspension

Sieve IV

Die Erfindung betrifft ein Sieb für die Behandlung einer zur Faserstoffbahnerzeugung geeigneten Faserstoffsuspension, bestehend aus mindestens zwei miteinander verbundenen und Durchbrüche (2) aufweisenden Siebschichten (1) und mit von den Durchbrüchen (2) gebildeten und durch das Sieb führenden Sieböffnungen. Dabei soll der Durchfluss dadurch verbessert werden, dass der Strömungsquerschnitt der Durchbrüche (2) wenigstens einer Siebschicht (1) Ecken und zumindest einer Siebschicht (1) keine Ecken (5) besitzt oder der Strömungsquerschnitt der Durchbrüche (2) aller Siebschichten (1) Ecken (5) besitzt und der Krümmungsradius wenigstens zweier in Strömungsrichtung (3) hintereinander liegender Ecken (5) zweier Siebschichten (1) unterschiedlich ist. The invention relates to a screen for the treatment of a pulp suspension suitable for Faserstoffbahnerzeugung, consisting of at least two interconnected and apertures (2) having screen layers (1) and from the openings (2) formed and leading through the screen openings. In this case, the flow is to be improved in that the flow cross-section of the openings (2) has at least one screen layer (1) corners and at least one screen layer (1) no corners (5) or the flow cross-section of the openings (2) of all screen layers (1) corners (5) and the radius of curvature of at least two in the flow direction (3) one behind the other lying corners (5) of two screen layers (1) is different.

Patent JPH0343394B2

Method for screening or fractionation

An improved method for screening and fractionation. By using a housing interiorly divided by a screen plate into a primary and a secondary chamber with the secondary chamber further divided by a fluid impermeable wall, a process fluid stream containing particulate material has a second and a third process fluid stream diverted from it. The second stream is outputed from the housing while the third stream is recirculated to the first chamber. It is demonstrated that high screening or fractionation efficiency is obtained by this method.

FOREIGN MATERIAL SEPARATOR

Method and apparatus for treating fiber suspension

Method of and device for fractionating suspensions.

Dans le procédé décrit, qui sert à fractionner des suspensions telles que de préférence des suspensions contenant de la pulpe fibreuse, la suspension à fractionner est vaporisée sous la forme d'au moins un jet (en 8a) contre une face d'une grille de filtrage (2-5) pendant le déplacement relatif de la grille de filtrage (2-5) et du jet de suspension l'un par rapport à l'autre, de sorte que la suspension est séparée en une fraction fine, qui passe à travers les trous de criblage de la grille de filtrage (2-5) et qui contient des particules fines, et en une fraction grossière, qui ne passe pas à travers les trous de criblage et qui contient des particules grossières et quelques particules fines. Selon la présente invention, un liquide de nettoyage se présentant sous la forme d'au moins un jet (en 22) est vaporisé contre la grille de filtrage (2-5), la grille de filtrage (2-5) et le jet de liquide de nettoyage étant déplacés l'un par rapport à l'autre, de sorte que le jet de liquide de nettoyage heurte les trous de criblage de la grille de filtrage (2-5) contre lesquels a été vaporisée la suspension. La présente invention se rapporte également à un dispositif de réalisation d'un tel procédé de fractionnement de suspensions. In the process described, which serves to fractionate suspensions such as preferably suspensions containing fibrous pulp, the suspension to be fractionated is vaporized in the form of at least one jet (at 8a) against a face of a grid of filtering (2-5) during the relative movement of the filter grid (2-5) and the slurry jet with respect to each other, so that the slurry is separated into a fine fraction, which passes to through the screen holes of the filter grid (2-5) and which contains fine particles, and in a coarse fraction, which does not pass through the screen holes and which contains coarse particles and some fine particles. According to the present invention, a cleaning liquid in the form of at least one jet ( ...

Patent JPH0561396B2

Disc filter

A disc filter and a method for supplying fibre pulp suspension into the disc filter is provided. The disc filter comprises at least one movable flow control element for directing at least part of the flow of the fibre pulp suspension to the surface or close to the surface of fibre pulp suspension in the supply box or in the vat. The movable flow control element is supported to a separation wall between an inlet chamber and an outlet chamber of the supply box or to a wall between the vat and the supply box and arranged to turn about a joint along a line of circular arch or move linearly in a vertical direction, and comprises a surface over which at least part of the flow of the fibre pulp suspension flows.

Screen apparatus for papermaking material

A screen apparatus includes a tank for receiving papermaking material; a cylindrical first screen having a closed end, an open end and a plurality of circumferential first openings partitioning the tank into first and second chambers; an annular second screen adjacent the first screen; and a rotating member in the first chamber. The second screen has second openings in a plate and a large center opening. The rotating member faces the large opening of the second screen and the closed end of the first screen, and includes agitating members facing both screens. When papermaking material is supplied to the first chamber, foreign materials are removed by the first and second screens, and refined papermaking material is discharged through the second chamber.

Sorting device for pulp suspensions for paper production

Die Sortiervorrichtung enthält ein Gehäuse (1) mit einem Umfangsmantel (2) in der Form eines Rotationskörpers, an dessen einer Endseite sich ein Sieb (3) befindet. An der dem Sieb (3) entgegengesetzten Endwand (13) des Gehäuses sind in den Innenraum des Gehäuses vorstehende Leitbleche (17) angeordnet. Im Gehäuse ist ein Rotor (7) vorgesehen, welcher Arme (6) aufweist, die entlang des Siebes (3) beweglich sind. The sorting device contains a housing (1) with a circumferential jacket (2) in the form of a rotary body, on one end of which there is a sieve (3). On the end wall (13) of the housing opposite the sieve (3), guide plates (17) protruding into the interior of the housing are arranged. A rotor (7) is provided in the housing, which has arms (6) which can be moved along the screen (3).

Filter sector for use in rotary disc filters for separating pulp suspensions

A filter sector ( 1 ) for use in rotary disc filters for separating pulp suspensions has opposite filtration walls ( 2 ) of a substantially rigid net, wherein a filtrate chamber ( 4 ) is formed between the filtration walls for receiving filtrate that has flowed through the filtration walls. Each filtration wall is profiled to form a multiplicity of cavities ( 5 ) and humps ( 6 ), and each cavity and hump, respectively, includes a multiplicity of meshes of the net. The provision of cavities and humps increases the effective filtering area of the filter sector, which results in increased capacity of the filter sector.

SCREEN TO DRAIN THE LIQUID FROM A FIBER SLURRY

Plank node sieve

SIKTSEGMENT FOER FILTER FOER KONCENTRERING AV FIBERSUSPENSION.

FOERFARANDE OCH ANORDNING FOER BEHANDLING AV FIBERSUSPENSION.

Horizontal sifter for the manufacture of paper pulp and cellulose with a screen submerged in the aqueous paper pulp

WASHING FILTER FOR THE TREATMENT OF PARTICULARLY THE PURIFICATION OF SUSPENSIONS OF FIBERS, PARTICULARLY OF WASTE PAPER

Endless fabric for condensing paper material and method of making thereof

An endless woven fabric for condensing paper material and a method for forming such an endless fabric which removes ink and other extraneous substances from the aqueous solution of reclaimed paper material. On the endless fabric formed by weaving plastic monofilaments, an antiflexing part, 30-50 mm in width, is provided on at least one end of the selvage in the direction of width by causing thermoplastic resin to fill not less than 85% of an empty space in the endless woven fabric. Further, a guide ridge of thermoplastic resin is formed by causing thermoplastic resin to fill an empty space in the end parts on the running surface of the endless fabric, and is welded with the antiflexing part integrally. Platelike reinforcing strips are formed in a length nearly equal to the width of the endless fabric. The strips are extended between the opposite ends of the endless fabric by causing thermoplastic resin of the strips to fill not less than 85% of an empty space in the endless fabric.

Pulper with a screen plate and uses of such a pulper

Screening apparatus

A screening apparatus (2) for separating a liquid mixture has a chamber (8) and an opening (10) thereto, and a circular screen disc (20) covering said opening. During operation a first fraction of a liquid mixture, which enters the chamber, passes through the screen disc, while a second fraction of the liquid mixture develops in the chamber. The screening apparatus further has a pulse generating device (40) for generating pulses that counteract clogging of the screen holes of the screen disc, and a motor (22) for rotating the screen disc relative to the pulse generating device. The pulse generating device (40) generates pressure pulses against the screen disc at the downstream side thereof, when the screen disc is rotated by the drive means.

Patent DE3344586C2

Filtration device for transferring cellulose fibers under pressure from one suspending liquid stream to another

FOERFARANDE OCH ANORDNING FOER RENING ELLER SILNING AV EN MATERIALSUSPENSION

Paper pulp filter equipment of waste paper recovery processing

本发明公开了一种废纸回收处理的纸浆过滤装置，包括支撑底座，所述支撑底座上轴承连接有转辊的两端，所述传送带上安装有2个定位框，且2个定位框上分别连接有集料容器和集杂容器，所述支撑底座的中部上端连接有支撑板，且支撑板的上端安装有进料斗，所述支撑板的中部贯穿有轴端，且轴端的外端键连接有摇杆，所述轴端的内端连接于过滤筒的外侧，且轴端的外侧通过第一皮带传动结构与转辊的外侧相连接。该废纸回收处理的纸浆过滤装置能使得滤网上下移动，从而使得滤网在弹簧的作用下产生振动，并在其上下移动的过程中，使得搅拌叶对滤网上的纸浆进行搅拌，有利于提高纸浆的过滤效率，且能对滤网上的杂质进行收集处理。

A DEVICE TO FRACTION A SUSPENSION OF FIBERS

METHOD AND DEVICE FOR SORTING A MIXTURE OF PAPER PULP AND IMPURITIES

The invention relates to a method and apparatus for sorting out recycled paper pulp obtained from scrap material containing contaminants in the form of large pieces of foreign material such as plastics, adhesives, pieces of rope and the like. The invention avoids the need to disintegrate such large pieces of foreign material prior to their removal. The device of the invention comprises a drum (1) with an horizontal axis (2), an end wall (3) of the drum being fitted with a perforated plate (4) and an helical stirrer (5) having profiled blades rotating in a plane parallel to this plate at a short distance thereof, these blades having a transverse cross-section with a hydrodynamic profile adapted for generating a depression in front of the perforated plate, and a leading edge (6) forming a Bernouilli spiral with a constant angle of approximately 30 DEG , the drum (1) comprising a pulp inlet (10) with a valve (11) located opposite the perforated plate, an auxiliary enclosure (7) for recovering accepted pulp behind the perforated plate, connected to the suction side of a pump (8), a water inlet (12) with a valve (13), a vent (16) and a large bottom opening (14) with a valve (15) for discharging the refuse after the accepted pulp has been recovered. While the above-described device is designed for batch operation, a modified embodiment is provided in which twin units of the above design are associated for continuous operation (1a and 1b, FIG. 5) controlled by a 3-way valve (24) for alternatively feeding contaminated pulp to either sorting unit. In either case, the refuse is washed clear and water is drained out of the refuse before its discharge, so that it may be readily discarded without further processing, and the stirrer permanently prevents the perforated plate from becoming plugged.

Filtering devices

A filtering device suitable for use in, for example, the papermaking industry has a generally-horizontal circular screen (7) onto which the liquid to be filtered flows from a tank (l) around the periphery of the screen. Solids filtered out of the liquid remain on the screen and are moved by a shower (l8) to an outlet (6) at the centre of the screen. The shower (l8) comprises several horizontal spray bars which extend radially across the screen and rotate about an axis at the centre of the screen. Each bar has a set of nozzles (l9), the locations of which are staggered with respect to the nozzle locations on the other bars. This ensures that the impact areas of one set of nozzles (l9) on the screen (7) do not follow the same paths over the screen as the preceding set of nozzles so that a more even coverage of the screen by the shower (l8) is achieved.

DEVICE FOR SEPARATING UNWANTED PARTICLES FROM A FIBER FIBER

PROCEDURE AND DEVICE FOR SEPARATION OF FIBER SUSPENSIONS

DEVICE AND PROCEDURE FOR SILING A SUSPENSION

Method of straining fibrous suspensions

Waste paper recovery drum, has anti-abrasion welded lining made of carbon, chrome and niobate or retro fitted as pre-made panel

A suspension of waste paper is broken down for recycling in a rotating metal drum (2) with esp. an anti-wear lining (3) made of a highly abrasion-resistant material (3) covering virtually all of and attached to the exposed drum inner face. The lining covers at least 90 per cent of the metal drum inner face. In a first embodiment the lining is applied by welding as a coating (3) containing carbon, chrome and niobate and is welded to a flat metal panel (2) and then bent to shape. In this embodiment, the weld beading (4) is orientated transverse to the direction of bending. In a second embodiment the lining consists of a pre-shaped panels which are pre-cut to shape and then welded in place or secured by fixtures.

PROCEDURE AND DEVICE FOR TREATING A FIBER SOLUTION.

The present invention relates to a method and apparatus for treating fiber suspension. The method and apparatus in accordance with the present invention is especially suitable for treating the fiber suspensions of the wood processing industry, for example, in thickening or washing pulp. The methods and apparatuses in accordance with prior art techniques have recently been based on using vacuum filters. In other words, the separation of liquid from the pulp has been based on the fact that an underpressure has been arranged on one side of the pulp cake, whereby the external atmospheric pressure has displaced liquid in the pulp. Thereby air has passed into the pulp causing slime problems among other things. On the other hand, a drawback with such apparatus has been their poor ability to utilize the filter surface, because only 50 - 60 % of the total filter surface area has even under the best conditions being efficiently used. The method and apparatus in accordance with the present invention enables the use of almost the whole filter surface by arranging the pressurized feed of the pulp to the apparatus, whereby liquid is separated due the lower pressure, for example the normal atmospheric pressure prevailing behind the filter surface. On the other hand, the discharge of the pulp cake has been arranged to be carried out from only a very limited portion of the filter surface, whereby the use of the filter surface area is even further intensified.

DEVICE TO INCREASE THE FLOW RATE OF DISC FILTERS

Process and apparatus for sorting a mixture of paper pulp and impurities

The invention relates to a method and apparatus for sorting out recycled paper pulp obtained from scrap material containing contaminants in the form of large pieces of foreign material such as plastics, adhesives, pieces of rope and the like. The invention avoids the need to disintegrate such large pieces of foreign material prior to their removal. The device of the invention comprises a drum (1) with an horizontal axis (2), an end wall (3) of the drum being fitted with a perforated plate (4) and an helical stirrer (5) having profiled blades rotating in a plane parallel to this plate at a short distance thereof, these blades having a transverse cross-section with a hydrodynamic profile adapted for generating a depression in front of the perforated plate, and a leading edge (6) forming a Bernouilli spiral with a constant angle of approximately 30 DEG , the drum (1) comprising a pulp inlet (10) with a valve (11) located opposite the perforated plate, an auxiliary enclosure (7) for recovering accepted pulp behind the perforated plate, connected to the suction side of a pump (8), a water inlet (12) with a valve (13), a vent (16) and a large bottom opening (14) with a valve (15) for discharging the refuse after the accepted pulp has been recovered. While the above-described device is designed for batch operation, a modified embodiment is provided in which twin units of the above design are associated for continuous operation (1a and 1b, FIG. 5) controlled by a 3-way valve (24) for alternatively feeding contaminated pulp to either sorting unit. In either case, the refuse is washed clear and water is drained out of the refuse before its discharge, so that it may be readily discarded without further processing, and the stirrer permanently prevents the perforated plate from becoming plugged.

Waste paper shredding device with opening and closing device

本发明公开了一种具有开闭装置的废纸碎纸装置，包括主支撑架，所述主支撑架包括上放置安装槽体，上放置安装槽体的底部外侧壁上固定有多个支腿，支腿固定在地面上，上放置安装槽体中插套有内搅拌壳体，所述内搅拌壳体的左侧板的下部成型有出料通孔，上放置安装槽体的左侧板的下部外侧壁固定有压紧油缸，压紧油缸的推杆伸入上放置安装槽体中并固定有压紧块，压紧块的右侧壁压靠在内搅拌壳体的左侧板的下部外侧壁，压紧块的右侧壁与内搅拌壳体的左侧板的下部外侧壁相对应。它可以在搅拌破碎时停止浆液输出，提高搅拌效果，大大降低破碎的碎片的颗粒大小，减少后续加工的时间和次数，大大提高生产效率。