EP0598187B1 - Pulper particularly for treating domestic waste - Google Patents
Pulper particularly for treating domestic waste Download PDFInfo
- Publication number
- EP0598187B1 EP0598187B1 EP93112454A EP93112454A EP0598187B1 EP 0598187 B1 EP0598187 B1 EP 0598187B1 EP 93112454 A EP93112454 A EP 93112454A EP 93112454 A EP93112454 A EP 93112454A EP 0598187 B1 EP0598187 B1 EP 0598187B1
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- EP
- European Patent Office
- Prior art keywords
- container
- coarse dirt
- trough
- fibre
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000010791 domestic waste Substances 0.000 title abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 13
- 238000007790 scraping Methods 0.000 claims 1
- 238000004537 pulping Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000725 suspension Substances 0.000 description 9
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
Definitions
- the invention relates to a pulp pulper according to the preamble of claim 1.
- pulp pulpers are e.g. became known from DE 32 25 026 C2.
- the container of such a pulping device generally has the shape of a cylinder, the axis of which is vertical, which has a bottom at the bottom and which is open at the top.
- the rotor is generally in the bottom area. Its axis of rotation usually coincides with the longitudinal axis of the container, but an eccentric arrangement is also possible.
- the rotor consists of a flat disc.
- the shredding blades are arranged in the manner of rotor blades of a centrifugal pump.
- the fibers to be treated ie to be dissolved
- the container for example organic waste, and also a liquid, generally water.
- the fibrous materials are torn apart and crushed and mixed with the liquid, so that a suspension is formed.
- the rotor sets the suspension in a strong flow. This has - seen in an axial section through the pulp dissolver - a toroidal shape, with a radial flow initially forming in the rotor area towards the container wall, which then rises to flow radially inward again in the area of the surface, and from there down to the center of the rotor. This flow pattern is desirable; Because of the downward flow, the solids in suspension repeatedly reach the rotor area, where they are processed.
- a device for removing the coarse and heavy waste in paper preparation which has a flat sieve screen extending over the entire width of a container for collecting the coarse and heavy waste, which on a rope of a trolley is arranged.
- the sieve rake has tines which are arranged in straight sieve bars, the sieve bars running at least approximately parallel at a distance from one another.
- the sieve is at least partially acted upon by the paper pulp from both sides of the rake, so that the sieving effect of the foreign bodies is extremely time-consuming, since the foreign bodies can only be caught on the tine side of the sieve rack for lifting out, because the foreign bodies must at least temporarily remove the sieve flow through, which delays the flow rate and thus the sieving process due to the resulting resistance.
- foreign bodies can flow through the sieve nicks between the relatively far apart hook-shaped tines, and on the other hand the foreign bodies lay around the sieve bars and hook on the curved tines so that a Unloading the foreign body is difficult and in particular cannot be done without laborious manual work.
- the known coarse dirt traps are structurally very complex at first.
- the coarse dirt trap according to DE 32 25 026 C2 has a rake.
- the tines of this rake point downwards in a first phase; the coarse material loops around the tines.
- the rake is pivoted about a vertical axis so that the tines point upwards; now the rake with the coarse dirt attached to it can be moved out.
- a telescopic device is used to drive out.
- the rake In a third phase, the rake must be swung out of the area of the container. In addition, the rake must be turned again about the horizontal axis mentioned so that the dirt slides off the tines.
- the invention has for its object to design a pulp pulverizer according to the preamble of claim 1 that it is overall simpler and therefore cheaper. This applies particularly to the coarse dirt trap. Above all, this should be designed in such a way that the cleaning intervals become shorter, and that radial positioning is carried out, depending on the needs of practice, without additional design effort can be.
- a trough for receiving the coarse dirt trap is connected to the interior of the container; furthermore, the coarse dirt trap can be moved into the interior of the container from the trough by pivoting about a horizontal axis.
- Such a pulp dissolver works as follows: First, the material to be dissolved is introduced into the interior of the container and diluted with water. The rotor starts to run. The coarse dirt trap is in the waiting position outside the interior, namely in the trough.
- the suspension formed in the interior is drawn off through a sieve. Then the slide between the container and the trough opens. The remaining mass is filled up with dilution water to the immersion depth of the coarse dirt trap. The coarse dirt trap is then swiveled out of the trough into the interior of the container. The rotor continues to run. The coarse dirt loops around the catch elements of the coarse dirt catcher. These catch elements are generally rods or tines. In a further phase, the coarse dirt trap is pivoted in the opposite direction, whereby it emerges from the diluted suspension. The swivel angle is dimensioned such that the coarse dirt trap with the coarse dirt adhering to it is located above the upper edge of the trough.
- the coarse dirt is wiped off the coarse dirt catcher, generally by a special wiping device.
- the advantages of the embodiment according to the invention are that the coarse dirt trap is constructed much more simply than in the prior art.
- the pivoting movement can be realized much more easily than the previously described movements of the previously known coarse dirt trap. There is no need to turn the catch elements. This makes the construction cheaper.
- catch elements of the coarse dirt trap can be brought into any position in the radial direction, e.g. right up to the rotor, where the catch effect is optimal.
- the coarse dirt trap only covers a short distance. This shortens the cleaning interval considerably.
- the container - except for the open opening when entering - is completely closed and therefore odor-proof. Odor-tightness is also guaranteed between the container and the trough during the discharge of the coarse dirt, since the flushing water level is above the swivel opening of the coarse dirt collector. With the previously known rake, such a sealing could only be achieved with great technical effort due to the sequence of movements.
- Another advantage is that with a corresponding design of the coarse dirt trap and with a corresponding arrangement of the horizontal pivot axis, the removal of the coarse dirt from the catch elements and thus its unloading can take place on two diametrically opposite sides of the pulp dissolver.
- This can be advantageous if you are on this side of the pulp breaker there is a ramp that can be used both for driving up fresh waste and for moving away coarse dirt. This is not a problem with the intermittent mode of operation of the pulp dissolver.
- FIG. 1 shows a side view and a schematic representation of an overall system for dissolving household waste.
- FIGS. 2-5 show 4 different working phases of a fiber pulper according to the invention.
- Figure 6 shows a top view of the container and trough. It can be seen from FIG. 6, inter alia, that the trough 10 has a rectangular shape when viewed from above.
- the container 2 is octagonal. This has the following reason: If the entry is household waste, the use of stainless steel is excluded. However, the wetted surfaces must be lined with a material that is resistant to corrosion and wear. Flat surfaces are easier to line than round ones.
- the system according to FIG. 1 comprises a pulp dissolver 1 with a container 2, which rests on four columns 3.
- a rotor 4 in the form of a helix is located in the interior of the container.
- In the lower part of the container there is a cylindrical screen plate.
- a trough 10 is assigned to the pulp dissolver 1. As can be seen, the outer wall of the trough 10 is designed as a quarter circle. Seen from above, the trough forms a rectangle - see FIG. 5. The trough 10 is conductively connected to the interior of the container 2.
- a coarse dirt trap 20 is pivotally mounted in the upper part of the pulp dissolver 1. Accordingly, it can perform a circular arc movement according to arrow 21.
- the coarse dirt trap 20 includes i.a. a catcher 22 with prongs 23.
- the system also has a ramp 30. This is used to drive up fresh household waste. However, it can also be used to remove coarse dirt.
- the coarse dirt catcher 20 has to be pivoted through 270 ° from its position shown, so that the prongs 23 of the catcher 22 point towards the ramp 30.
- a precomminution device 9 is connected upstream of the pulp pulverizer 1, which is only indicated schematically here.
- FIG. 2 shows the phase of dissolving in the case of a fiber pulper according to the invention.
- Garbage was introduced into the container 2 from above, water was added, and the rotor 4 was put into circulation.
- the resulting suspension has a consistency of, for example, 7-10%.
- the coarse dirt trap 20 is in the waiting position in the trough 10.
- the slider 24 located between these two is closed.
- the trough is connected to a dilution water line 25.
- the dilution water supplied here can be return water, which accumulates at some point in the course of the process.
- FIG. 5 shows the phase in which the coarse dirt is released by the rake.
- a scraper device 27 is provided which can be actuated by a lifting cylinder unit in order to scrape off the coarse dirt from the prongs 23 of the catcher 22. It falls into a drip pan 28.
- the rotor 4 is overhung.
- the storage shown here, which is located above, has proven to be particularly advantageous.
- the rotor 4 thus dips into the interior of the container 2 from above.
- the biomass obtained can be thickened and fed to a digester. It can also be deposited as a rotte heap. Finally, anaerobic digestion can be used to obtain biogas.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft einen Faserstoffauflöser gemäß dem Oberbegriff von Anspruch 1. Solche Faserstoffauflöser sind z.B. bekanntgeworden aus DE 32 25 026 C2.The invention relates to a pulp pulper according to the preamble of claim 1. Such pulp pulpers are e.g. became known from DE 32 25 026 C2.
Der Behälter eines solchen Faserstoffauflösers hat im allgemeinen die Form eines Zylinders, dessen Achse vertikal verläuft, der unten einen Boden hat, und der oben offen ist. Der Rotor befindet sich im allgemeinen im Bodenbereich. Meist fällt seine Drehachse mit der Längsachse des Behälters zusammen, jedoch ist auch eine exzentrische Anordnung möglich. Im allgemeinen besteht der Rotor aus einer ebenen Scheibe. Die Zerkleinerungsflügel sind nach Art von Laufschaufeln einer Kreiselpumpe angeordnet.The container of such a pulping device generally has the shape of a cylinder, the axis of which is vertical, which has a bottom at the bottom and which is open at the top. The rotor is generally in the bottom area. Its axis of rotation usually coincides with the longitudinal axis of the container, but an eccentric arrangement is also possible. In general, the rotor consists of a flat disc. The shredding blades are arranged in the manner of rotor blades of a centrifugal pump.
Beim Betrieb werden in dem Behälter die zu behandelnden, d.h. aufzulösenden Faserstoffe eingetragen, z.B. Biomüll, und außerdem eine Flüssigkeit, im allgemeinen Wasser. Durch die Arbeit des Rotors werden die Faserstoffe auseinandergerissen und zerkleinert und dabei mit der Flüssigkeit vermischt, so daß eine Suspension entsteht. Die Suspension wird durch den Rotor in eine starke Strömung versetzt. Diese hat - in einem Axialschnitt durch den Faserstoffauflöser gesehen - eine Torusform, wobei sich im Rotorbereich zunächst eine Radialströmung nach außen gegen die Behälterwand hin ausbildet, die sodann nach oben steigt, um im Bereich der Oberfläche wieder radial nach innen zu strömen, und von da aus nach unten zum Zentrum des Rotors hin. Dieses Strömungsbild ist erwünscht; durch die Abwärtsströmung gelangen nämlich die in Suspension befindlichen Feststoffe immer wieder in den Rotorbereich, wo sie bearbeitet werden.During operation, the fibers to be treated, ie to be dissolved, are introduced into the container, for example organic waste, and also a liquid, generally water. Through the work of the rotor, the fibrous materials are torn apart and crushed and mixed with the liquid, so that a suspension is formed. The rotor sets the suspension in a strong flow. This has - seen in an axial section through the pulp dissolver - a toroidal shape, with a radial flow initially forming in the rotor area towards the container wall, which then rises to flow radially inward again in the area of the surface, and from there down to the center of the rotor. This flow pattern is desirable; Because of the downward flow, the solids in suspension repeatedly reach the rotor area, where they are processed.
Die Aufbereitung von Faserstoffen, insbesondere von Hausmüll und Altpapier, bringt besondere Probleme mit sich, die bereits beim Auflösen beginnen. Besonders unangenehm ist der Anteil spezifisch leichter Verunreinigungen, vor allem Kunststoff und wasserfesten Papieren.The processing of fibrous materials, especially household waste and waste paper, brings with it special problems that begin when it is dissolved. The proportion of specifically light impurities, especially plastic and waterproof papers, is particularly unpleasant.
Aus der DE-OS 30 24 485 ist eine Vorrichtung zum Entfernen des Grob- und Schwerabfalles bei der Papieraufbereitung bekannt, welche zum Auffangen des Grob- und Schwerabfalles einen sich über die ganze Breite eines Behälters erstreckenden ebenen Siebrechen aufweist, der an einem Seil einer Laufkatze angeordnet ist. Der Siebrechen weist Zinken auf, die in geradlinig verlaufenden Siebstäben angeordnet sind, wobei die Siebstäbe wenigstens annähernd parallel im Abstand zueinander verlaufen. Der siebrechen wird zumindest stellenweise von beiden Rechenseiten her vom Papierbrei beaufschlagt, so daß die Absiebwirkung der Fremdkörper äußerst zeitaufwendig ist, da die Fremdkörper nämlich nur auf der Zinkenseite des Siebrechens zum Herausheben aufgefangen werden können, müssen die Fremdkörper nämlich mindestens zeitweise vor dem Auffangen den Siebrechen durchströmen, was aufgrund des dabei entstehenden Widerstandes die Strömungsgeschwindigkeit und damit den Absiebvorgang verzögert. Außerdem können bei der Vorrichtung nach der DE-OS 30 24 485 einerseits zwischen den verhältnismäßig weit auseinander angeordneten hakenförmigen Zinken Fremdkörper auch von der Zinkenseite her den Siebrechen durchströmen, andererseits sich die Fremdkörper so um die Siebstäbe legen und an den gekrümmten Zinken verhaken, daß ein Abladen der Fremdkörper Schwierigkeiten bereitet und insbesondere nicht ohne mühselige Handarbeit vorgenommen werden kann.From DE-OS 30 24 485 a device for removing the coarse and heavy waste in paper preparation is known, which has a flat sieve screen extending over the entire width of a container for collecting the coarse and heavy waste, which on a rope of a trolley is arranged. The sieve rake has tines which are arranged in straight sieve bars, the sieve bars running at least approximately parallel at a distance from one another. The sieve is at least partially acted upon by the paper pulp from both sides of the rake, so that the sieving effect of the foreign bodies is extremely time-consuming, since the foreign bodies can only be caught on the tine side of the sieve rack for lifting out, because the foreign bodies must at least temporarily remove the sieve flow through, which delays the flow rate and thus the sieving process due to the resulting resistance. In addition, in the device according to DE-OS 30 24 485 on the one hand foreign bodies can flow through the sieve nicks between the relatively far apart hook-shaped tines, and on the other hand the foreign bodies lay around the sieve bars and hook on the curved tines so that a Unloading the foreign body is difficult and in particular cannot be done without laborious manual work.
Aus der DE-OS 28 18 778 ist eine andersartige Vorrichtung zum Entfernen des Grob- und Schwerschmutzes bekannt, bei welcher an einer um eine horizontale Achse rotierende Entnahmevorrichtung rechenartige Zinken befestigt sind.From DE-OS 28 18 778 a different type of device for removing coarse and heavy dirt is known, in which rake-like tines are attached to a removal device rotating about a horizontal axis.
Bei den bekannten Faserstoffauflösern ist die Vorrichtung zum Herausfischen des Grobschmutzes mit besonderen Problemen behaftet. Die bekannten Grobschmutzfänger sind zunächst baulich sehr aufwendig. Der Grobschmutzfänger gemäß DE 32 25 026 C2 weist einen Rechen auf. Die Zinken dieses Rechens weisen in einer ersten Phase nach unten; hierbei schlingt sich der Grobstoff um die Zinken herum. In einer zweiten Phase wird der Rechen um eine vertikale Achse verschwenkt, so daß die Zinken nach oben weisen; nunmehr läßt sich der Rechen mit dem daran hängenden Grobschmutz herausfahren. Zum Herausfahren wird eine Teleskopiereinrichtung verwendet. In einer dritten Phase muß der Rechen aus dem Bereich des Behälters herausgeschwenkt werden. Außerdem bedarf es einer erneuten Wendung des Rechens um die genannte horizontale Achse, damit der Schmutz von den Zinken herabrutscht.In the known fiber dissolvers, the device for fishing out the coarse dirt has particular problems. The known coarse dirt traps are structurally very complex at first. The coarse dirt trap according to DE 32 25 026 C2 has a rake. The tines of this rake point downwards in a first phase; the coarse material loops around the tines. In a second phase, the rake is pivoted about a vertical axis so that the tines point upwards; now the rake with the coarse dirt attached to it can be moved out. A telescopic device is used to drive out. In a third phase, the rake must be swung out of the area of the container. In addition, the rake must be turned again about the horizontal axis mentioned so that the dirt slides off the tines.
Hieraus folgt, daß der einzelne Reinigungsintervall verhältnismäßig lange dauert. Häufig dauert der Reinigungsintervall so lange, wie der Auflöseintervall.It follows from this that the individual cleaning interval takes a relatively long time. The cleaning interval often lasts as long as the dissolving interval.
Ein weiterer Nachteil besteht darin, daß die radiale Position des Rechens in Bezug auf die vertikale Achse des Rotors durch die Konstruktion ein für allemal vorgegeben ist. Statt dessen wäre eine radiale Positionierung des Rechens je nach Art des Faserstoffs wünschenswert, um eine optimale Fangwirkung zu erzielen. Mechanisch wäre dies nur mit weiterem Aufwand machbar.Another disadvantage is that the radial position of the rake with respect to the vertical axis of the rotor is predetermined once and for all by the design. Instead, radial positioning of the rake, depending on the type of fiber, would be desirable in order to achieve an optimal catching effect. Mechanically, this would only be possible with further effort.
Der Erfindung liegt die Aufgabe zugrunde, einen Faserstoffauflöser gemäß dem Oberbegriff von Anspruch 1 derart zu gestalten, daß er insgesamt einfacher und damit billiger wird. Dies gilt besonders für den Grobschmutzfänger. Dieser soll vor allem derart gestaltet werden, daß die Reinigungsintervalle kürzer werden, und daß eine radiale Positionierung je nach den Bedürfnissen der Praxis ohne zusätzlichen konstruktiven Aufwand vorgenommen werden kann.The invention has for its object to design a pulp pulverizer according to the preamble of claim 1 that it is overall simpler and therefore cheaper. This applies particularly to the coarse dirt trap. Above all, this should be designed in such a way that the cleaning intervals become shorter, and that radial positioning is carried out, depending on the needs of practice, without additional design effort can be.
Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.This object is solved by the characterizing features of claim 1.
Demgemäß wird an den Innenraum des Behälters ein Trog zur Aufnahme des Grobschmutzfängers angeschlossen; ferner ist der Grobschmutzfänger aus dem Trog durch Verschwenken um eine horizontale Achse in den Innenraum des Behälters einfahrbar.Accordingly, a trough for receiving the coarse dirt trap is connected to the interior of the container; furthermore, the coarse dirt trap can be moved into the interior of the container from the trough by pivoting about a horizontal axis.
Ein solcher Faserstoffauflöser arbeitet wie folgt: Zunächst wird in den Innenraum des Behälters das aufzulösende Gut eingeführt und mit Wasser verdünnt. Der Rotor beginnt zu laufen. Der Grobschmutzfänger befindet sich außerhalb des Innenraumes, nämlich im Trog, in Wartestellung.Such a pulp dissolver works as follows: First, the material to be dissolved is introduced into the interior of the container and diluted with water. The rotor starts to run. The coarse dirt trap is in the waiting position outside the interior, namely in the trough.
Nach dem Auflösevorgang wird die im Innenraum gebildete Suspension durch ein Sieb abgezogen. Danach öffnet sich der Schieber zwischen Behälter und Trog. Die verbleibende Masse wird mit Verdünnungswasser bis auf die Eintauchtiefe des Grobschmutzfängers aufgefüllt. Danach wird der Grobschmutzfänger aus dem Trog in den Innenraum des Behälters eingeschwenkt. Der Rotor läuft weiter. Der Grobschmutz schlingt sich um die Fangelemente des Grobschmutzfängers. Bei diesen Fangelementen handelt es sich im allgemeinen um Stäbe oder Zinken. In einer weiteren Phase wird der Grobschmutzfänger in Gegenrichtung verschwenkt, wobei er aus der verdünnten Suspension austaucht. Der Schwenkwinkel ist dabei derart bemessen, daß sich der Grobschmutzfänger mit dem daran haftenden Grobschmutz oberhalb der Oberkante des Troges befindet.After the dissolving process, the suspension formed in the interior is drawn off through a sieve. Then the slide between the container and the trough opens. The remaining mass is filled up with dilution water to the immersion depth of the coarse dirt trap. The coarse dirt trap is then swiveled out of the trough into the interior of the container. The rotor continues to run. The coarse dirt loops around the catch elements of the coarse dirt catcher. These catch elements are generally rods or tines. In a further phase, the coarse dirt trap is pivoted in the opposite direction, whereby it emerges from the diluted suspension. The swivel angle is dimensioned such that the coarse dirt trap with the coarse dirt adhering to it is located above the upper edge of the trough.
In einer letzten Phase wird der Grobschmutz vom Grobschmutzfänger abgestreift, und zwar im allgemeinen durch eine besondere Abstreifeinrichtung.In a final phase, the coarse dirt is wiped off the coarse dirt catcher, generally by a special wiping device.
Die Vorteile der erfindungsgemäßen Ausführungsform liegen darin, daß der Grobschmutzfänger wesentlich einfacher aufgebaut ist, als beim Stande der Technik. Die Schwenkbewegung läßt sich viel leichter verwirklichen, als die zuvor beschriebenen Bewegungen des vorbekannten Grobschmutzfängers. Es bedarf keines Wendens der Fangelemente. Damit wird die Konstruktion billiger.The advantages of the embodiment according to the invention are that the coarse dirt trap is constructed much more simply than in the prior art. The pivoting movement can be realized much more easily than the previously described movements of the previously known coarse dirt trap. There is no need to turn the catch elements. This makes the construction cheaper.
Ein weiterer Vorteil besteht darin, daß die Fangelemente des Grobschmutzfängers in radialer Richtung in jede beliebige Position verbringbar sind, also z.B. bis ganz nahe an den Rotor heran, wo die Fangwirkung optimal ist.Another advantage is that the catch elements of the coarse dirt trap can be brought into any position in the radial direction, e.g. right up to the rotor, where the catch effect is optimal.
Durch den geschilderten Aufbau legt der Grobschmutzfänger nur einen kurzen Weg zurück. Dadurch verkürzt sich der Reinigungsintervall ganz erheblich.Due to the structure described, the coarse dirt trap only covers a short distance. This shortens the cleaning interval considerably.
Ein weiterer Vorteil des GrobschmutzfängerS besteht darin, daß der Behälter - bis auf die geöffnete Einwurföffnung beim Eintragen - völlig geschlossen und damit geruchsdicht ist. Die Geruchsdichtigkeit ist auch zwischen Behälter und Trog während des Austrags des Grobschmutzes gewährleistet, da der Spülwasserstand oberhalb der Durchschwenköffnung des Grobschmutzfängers liegt. Beim vorbekannten Rechen wäre ein solches Abdichten aufgrund des Bewegungsablaufes nur mit großem technischen Aufwand zu erreichen.Another advantage of the coarse dirt trap is that the container - except for the open opening when entering - is completely closed and therefore odor-proof. Odor-tightness is also guaranteed between the container and the trough during the discharge of the coarse dirt, since the flushing water level is above the swivel opening of the coarse dirt collector. With the previously known rake, such a sealing could only be achieved with great technical effort due to the sequence of movements.
Ein weiterer Vorteil besteht darin, daß bei entsprechender Gestaltung des Grobschmutzfängers und bei entsprechender Anordnung der horizontalen Schwenkachse das Entfernen des Grobschmutzes von den Fangelementen und damit dessen Abladen auf zwei diametral einander gegenüberliegenden Seiten des Faserstoffauflösers stattfinden kann. Dies bedeutet, daß der Grobschmutz beispielsweise auf jener Seite abgeladen werden kann, auf welcher der Faserstoffauflöser mit Müll beschickt wird. Dies kann dann vorteilhaft sein, wenn sich gerade auf dieser einen Seite des Faserstoffauflösers eine Rampe befindet, die sowohl zum Heranfahren von frischem Müll als auch zum Abfahren von Grobschmutz befahrbar ist. Bei der intermittierenden Arbeitsweise des Faserstoffauflösers ist dies kein Problem.Another advantage is that with a corresponding design of the coarse dirt trap and with a corresponding arrangement of the horizontal pivot axis, the removal of the coarse dirt from the catch elements and thus its unloading can take place on two diametrically opposite sides of the pulp dissolver. This means that the coarse dirt can be dumped, for example, on the side on which the pulp dissolver is loaded with waste. This can be advantageous if you are on this side of the pulp breaker there is a ramp that can be used both for driving up fresh waste and for moving away coarse dirt. This is not a problem with the intermittent mode of operation of the pulp dissolver.
Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:
Figur 1 zeigt in einer Seitenansicht und in schematischer Darstellung eine Gesamtanlage zum Auflösen von Hausmüll. Die Figuren 2-5 zeigen 4 verschiedene Arbeitsphasen eines erfindungsgemäßen Faserstoffauflösers. Figur 6 zeigt eine Draufsicht auf Behälter und Trog. Aus Figur 6 erkennt man u.a., daß der Trog 10 in Draufsicht gesehen eine rechteckige Gestalt hat. Der Behälter 2 ist achteckig. Dies hat folgenden Grund: Handelt es sich bei dem Eintrag um Hausmüll, so scheidet die Verwendung von Edelstahl aus. Jedoch müssen die stoffberührten Flächen mit einem Material ausgekleidet sein, das korrosions- und verschleißfest ist. Ebene Flächen lassen sich aber leichter auskleiden als runde.The invention is explained in more detail with reference to the drawing. The following is shown in detail:
Figure 1 shows a side view and a schematic representation of an overall system for dissolving household waste. FIGS. 2-5
Die Anlage gemäß Figur 1 umfaßt einen Faserstoffauflöser 1 mit einem Behälter 2, der auf vier Säulen 3 ruht. Im Behälter-Innenraum befindet sich ein Rotor 4 in Form einer Wendel. Im unteren Teil des Behälters befindet sich ein zylindrisches Siebblech. Am Außenumfang der hier nicht erkennbaren Auflöseschraube (siehe Figur 5) des Rotors befinden sich Räumerorgane 6, die mit dem Rotor 3 fest verbunden sind und mit diesem umlaufen. Sie halten das Siebblech 5 beim Abpumpen der Suspension von Verstopfung frei.The system according to FIG. 1 comprises a pulp dissolver 1 with a
Dem Faserstoffauflöser 1 ist ein Trog 10 zugeordnet. Wie man erkennt, ist die Außenwandung des Troges 10 als Viertelkreis gestaltet. In Draufsicht gesehen bildet der Trog ein Rechteck - siehe Figur 5. Der Trog 10 ist mit dem Innenraum des Behälters 2 leitend verbunden.A
Ein Grobschmutzfänger 20 ist im oberen Teil des Faserstoffauflösers 1 schwenkbar gelagert. Demgemäß vermag er eine Kreisbogenbewegung gemäß des Pfeiles 21 auszuführen. Der Grobschmutzfänger 20 umfaßt u.a. einen Fänger 22 mit Zinken 23.A
Im unteren Teil des Behälterbodens befindet sich eine Schwerschmutzschleuse 7 radial außerhalb des zylindrischen Siebes 5 sowie ein Abzug 8 für die Suspension aus dem Raum innerhalb des zylindrischen Siebes 5.In the lower part of the bottom of the container there is a
Die Anlage weist ferner eine Rampe 30 auf. Diese dient zum Heranfahren von frischem Hausmüll. Sie kann jedoch ebensogut zum Abfahren von Grobschmutz benutzt werden. Zu diesem Zwecke muß nämlich der Grobschmutzfänger 20 aus seiner dargestellten Position um 270° verschwenkt werden, so daß die Zinken 23 des Fängers 22 zur Rampe 30 hin weisen.The system also has a
Dem Faserstoffauflöser 1 ist eine Vorzerkleinerungseinrichtung 9 vorgeschaltet, die hier nur schematisch angedeutet ist.A
Figur 2 zeigt bei einem erfindungsgemaßen Faserstoffauflöser die Phase des Auflösens. Es wurde Müll von oben her in den Behälter 2 eingetragen, Wasser hinzugegeben, und der Rotor 4 in Umlauf versetzt. Die dabei entstehende Suspension hat eine Stoffdichte von beispielsweise 7-10 %. Während des Auflösevorganges befindet sich der Grobschmutzfänger 20 im Trog 10 in Warteposition. Der zwischen diesen beiden befindliche Schieber 24 ist geschlossen. Der Trog ist an eine Verdünnungswasserleitung 25 angeschlossen. Das hierbei zugeführte Verdünnungswasser kann Rückwasser sein, das an irgendeiner Stelle im Verlaufe des Prozesses anfällt.FIG. 2 shows the phase of dissolving in the case of a fiber pulper according to the invention. Garbage was introduced into the
Bei der in Figur 3 dargestellten Phase ist ein Großteil des Gutstoffes aus dem Siebblech 5 umschlossenen Raum durch eine Leitung 5.1 abgezogen worden. Der angefallene Schwerschmutz wurde ebenfalls durch die Schleuse 7 abgezogen. Schieber 24 befindet sich in Offen-Stellung. Der Grobschmutzfänger 20 ist aus dem Trograum in den Behälter-Innenraum verschwenkt, und zwar derart, daß die Zinken 23 des Fängers 22 vertikal stehen und nach unten weisen, und daß sich Fänger 22 ganz nahe beim Siebblech 4 befindet. Aus dem Trog 10 strömt Verdünnungswasser in den Behälter-Innenraum und sorgt dafür, daß eine Mindestmenge in diesem Innenraum verbleibt. Der Rotor 4 läuft weiter um, so daß sich um die Zinken 23 des Fängers 22 die leichten Verunreinigungen schlingen.In the phase shown in Figure 3, a large part of the Gutstoffes from the
In Figur 4 erkennt man, daß der Grobschmutzfänger 20 aus dem Innenraum des Behälters 2 und auch aus dem Trog 10 herausgeschwenkt wurde. Der Rechen befindet sich nunmehr oberhalb der Unterkante des Troges 10. Der Fänger 22 fährt beim Herausschwenken an den Düsen der Verdünnungswasserleitung 25 vorbei. Hierbei kann Spritzwasser zugeführt werden, um die am Grobschmutz anhaftenden Faserstoffe abzuspülen.In Figure 4 it can be seen that the
Figur 5 zeigt die Phase, in welcher der Grobschmutz vom Rechen abgegeben wird. Dabei ist eine Abstreifeinrichtung 27 vorgesehen, die durch eine Hubzylindereinheit betätigbar ist, um den Grobschmutz von den Zinken 23 des Fängers 22 abzustreifen. Er fällt in eine Auffangwanne 28.Figure 5 shows the phase in which the coarse dirt is released by the rake. A
Der Betrieb ist hier zwar intermittierend dargestellt. Eine kontinuierliche Arbeitsweise ist jedoch ebenfalls möglich.The operation is shown intermittently here. However, continuous operation is also possible.
Wie man sieht, ist der Rotor 4 fliegend gelagert. Als besonders vorteilhaft hat sich dabei die hier dargestellte Lagerung erwiesen, die sich oben befindet. Der Rotor 4 taucht somit von oben her in den Innenraum des Behälters 2 ein.As you can see, the
Die Weiterverwendung der von Schwerschmutz und Grobschmutz befreiten Suspension ist nicht Gegenstand dieser Erfindung. Wie bekannt, gibt es hierzu zahlreiche Systeme. So kann die gewonnene Biomasse beispielsweise eingedickt und einem Faulturm zugeführt werden. Weiterhin kann sie als Rottehalde abgelagert werden. Schließlich kommt das anaerobe Vergären zur Gewinnung von Biogas in Betracht.The further use of the suspension freed from heavy dirt and coarse dirt is not the subject of this invention. As is known, there are numerous systems for this. For example, the biomass obtained can be thickened and fed to a digester. It can also be deposited as a rotte heap. Finally, anaerobic digestion can be used to obtain biogas.
Claims (7)
- Fibre dissolver, in particular for dissolving waste or paper, comprising1.1 a preferably cylindical or cornered container (2) with vertical axis;1.2 a rotor (4), which is arranged in the upper portion of the container and which also has a vertical axis;1.3 a device for gathering coarse dirt (20), which is driven into the container (2);
characterized by the following features:1.4 a trough (5) for receiving the device for gathering coarse dirt (20) is connected to the interior space of the container (2);1.5 the device for gathering coarse dirt (20) is driven from the trough (10) into the interior space of the container (2) by being pivoted around a horizontal axis. - A fibre dissolver according to Claim 1, characterized in that the interior space of the container (2) can be shut off from the trough (10).
- A fibre dissolver according to one of Claims 1 or 2, characterized in that the bottom of the trough (10) is arcshaped, as seen in a vertical cross-section, and that the trough (10) has a rectangular contour, as seen in a horizontal cross-section.
- A fibre dissolver according to one of Claims 1-3, characterized in that the device for catching coarse dirt (20) comprises a catcher (22) the prongs (23) of which are, whilst positioned inside the container (2), essentially vertical and oriented downwards.
- A fibre dissolver according to one of Claims 1-4, characterized in that the device for catching coarse dirt (20) is pivotal by at least virtually 270°.
- A fibre dissolver according to one of Claims 1-5, characterized in that the fibre dissolver (20) is associated with a scraper (27) for scraping off the coarse dirt.
- A fibre dissolver according to one of Claims 1-6, characterized in that the rotor (4) is suspended in a flying position in the upper area of the interior of the container or above the container (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4235119 | 1992-10-17 | ||
DE4235119A DE4235119C1 (en) | 1992-10-17 | 1992-10-17 | Fiber dissolver, especially for dissolving household waste |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0598187A1 EP0598187A1 (en) | 1994-05-25 |
EP0598187B1 true EP0598187B1 (en) | 1996-05-22 |
Family
ID=6470752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93112454A Expired - Lifetime EP0598187B1 (en) | 1992-10-17 | 1993-08-04 | Pulper particularly for treating domestic waste |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0598187B1 (en) |
AT (1) | ATE138431T1 (en) |
DE (1) | DE4235119C1 (en) |
DK (1) | DK0598187T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19824806A1 (en) * | 1998-06-03 | 1999-12-09 | Recycling Energie Abfall | Screening device and fabric dissolving device using this |
DE19829648A1 (en) * | 1998-07-02 | 2000-03-09 | Recycling Energie Abfall | Coarse dirt trap device for lifting the coarse material out of a pulper and corresponding working method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19627282A1 (en) | 1995-08-25 | 1997-02-27 | Lohse Verwaltungs Gmbh | Device to dissolve biological wastes and fibrous wastes |
EP0927788A3 (en) * | 1997-12-22 | 2000-05-03 | Roediger Anlagenbau GmbH | Process and apparatus for separating heavy and light materials from a suspension |
DE102007048137C5 (en) * | 2007-10-05 | 2019-06-19 | Wilhelm Niemann Gmbh & Co. | Process and preparation of organic materials for biogas plants |
SE538980C2 (en) * | 2013-05-07 | 2017-03-14 | Valmet Oy | An apparatus for separating particles in a pulp suspension |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2691324A (en) * | 1951-03-29 | 1954-10-12 | Downingtown Mfg Co | Apparatus for removing rags from stock pulpers |
AT360828B (en) * | 1978-03-06 | 1981-02-10 | Escher Wyss Gmbh | SORTING DEVICE FOR FABRIC LIQUID RECOVERED FROM WASTE PAPER |
DE3024485C2 (en) * | 1980-06-28 | 1982-10-28 | Ed. Mann GmbH & Co KG Papierfabrik, 6719 Ebertsheim | Device for removing coarse and heavy waste from waste paper processing |
DE3225026A1 (en) * | 1982-07-05 | 1984-01-05 | Martin Lohse GmbH, 7920 Heidenheim | Apparatus for eliminating the coarse and heavy waste in waste paper reprocessing |
-
1992
- 1992-10-17 DE DE4235119A patent/DE4235119C1/en not_active Expired - Fee Related
-
1993
- 1993-08-04 DK DK93112454.9T patent/DK0598187T3/en active
- 1993-08-04 AT AT93112454T patent/ATE138431T1/en not_active IP Right Cessation
- 1993-08-04 EP EP93112454A patent/EP0598187B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19824806A1 (en) * | 1998-06-03 | 1999-12-09 | Recycling Energie Abfall | Screening device and fabric dissolving device using this |
DE19829648A1 (en) * | 1998-07-02 | 2000-03-09 | Recycling Energie Abfall | Coarse dirt trap device for lifting the coarse material out of a pulper and corresponding working method |
DE19829648C2 (en) * | 1998-07-02 | 2000-06-29 | Recycling Energie Abfall | Coarse dirt trap device for lifting the coarse material out of a pulper |
Also Published As
Publication number | Publication date |
---|---|
DK0598187T3 (en) | 1996-10-07 |
ATE138431T1 (en) | 1996-06-15 |
DE4235119C1 (en) | 1994-04-21 |
EP0598187A1 (en) | 1994-05-25 |
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