EP0498279A1 - Device for making and pressing a cement suspension - Google Patents

Device for making and pressing a cement suspension Download PDF

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Publication number
EP0498279A1
EP0498279A1 EP92101407A EP92101407A EP0498279A1 EP 0498279 A1 EP0498279 A1 EP 0498279A1 EP 92101407 A EP92101407 A EP 92101407A EP 92101407 A EP92101407 A EP 92101407A EP 0498279 A1 EP0498279 A1 EP 0498279A1
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EP
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Prior art keywords
pump
container
treatment
compression
cement suspension
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Granted
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EP92101407A
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German (de)
French (fr)
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EP0498279B1 (en
Inventor
Walter Dipl.-Ing. Rosa
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Rodl Firma GmbH
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Rodl Firma GmbH
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Priority to DE9218689U priority Critical patent/DE9218689U1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

Definitions

  • the invention relates to a device for processing and grouting a cement suspension, in which a processing tank is connected to the inlet of a processing pump, which in turn is connected for a cement suspension circuit by means of a circuit line to the outlet of the processing pump, in which a grouting tank is connected to the inlet of a grouting pump which, in turn, is connected for a cement suspension circuit by means of a circuit line to the outlet of the injection pump, the cement suspension circulating in injection breaks via the injection pump and the circuit line, in which the outlet of the treatment pump is to be assigned to the injection container via an end hose and to the outlet of the injection pump a compression hose is connected, which is provided with a compression nozzle at the free end, and in which the circuit line of the treatment pump, the transfer line, the circuit line g of the injection pump and the injection hose can be shut off using a shut-off valve.
  • the treatment pump is designed as a centrifugal pump with an adjustable grinding gap.
  • the preparation tank and the compression tank are exposed to the respective ambient temperature.
  • This device is geared towards the preparation and compression of normal cement, the treatment pump and the injection pump operating at relatively low speed without clumping occurring.
  • the known device is not suitable for processing fine cement.
  • An object of the invention is therefore a device of the type mentioned that with larger batches works, which are provided for several temporally separate grouting operations, the cement suspension of the large batches must also be kept in a usable state in the grouting device over a prolonged period of time, in such a way that it is suitable for fine cement.
  • the device according to the invention is solving this problem, characterized in that a sieve is inserted into the circuit line of the treatment pump and that the treatment container and the compression container are each surrounded by a cooling device through which coolant flows, which is connected to a cooling unit through which the coolant flows.
  • any clumping is prevented by the sieve in the circuit line.
  • This strainer forms a reduced cross-section in the circuit line with a large number of small passages.
  • the cooling devices are provided, the treatment pump and the injection pump can work at high speed.
  • the liquid coolant can be kept at a temperature of from -5 ° C. to -10 ° C., which enables a specifically controllable cooling of the cement suspension.
  • the device is designed for the preparation and grouting of fine cement.
  • the cement suspension prepared and mixed by means of the treatment pump which is in a much larger batch, is conveyed away from the treatment device by means of the treatment pump, so that the treatment container does not have to be moved for this purpose.
  • This cement suspension is kept in a usable state in the compression device over a long period of time because a circuit is provided which keeps the cement suspension in motion and mixes and because the cement suspension is cooled in the compression container so that it is heated by the injection pump operating the circuit is prevented.
  • Working with the device according to the invention is simplified and accelerated.
  • the treatment pump is a centrifugal pump with a paddle wheel.
  • a centrifugal pump can deliver expedient high pressures which are favorable for an accelerated preparation mixture and for an accelerated transfer of the cement suspension.
  • processing container and the compression container are closed at the top during operation.
  • closure e.g. B. by means of a cover, site-related contamination of the cement suspension are avoided.
  • the sieve is formed from a perforated plate.
  • a perforated plate sieve is much more stable or stronger than a mesh or wire sieve and thus better matched to the relatively high pressures to be taken into account.
  • the sieve has sieve openings whose cross-section is reduced in the flow direction. This promotes the crushing of particles contained in the cement suspension.
  • a particularly expedient and advantageous embodiment of the invention exists if at least two sieves, the sieve openings of which have different cross-sections, are provided one after the other. These two or three or more sieves which are provided one after the other with a decreasing cross-section allow the crushing of larger particles in stages and thus more easily than if only one sieve is provided, the openings of which have the small cross-section matched to the desired fineness.
  • the compression pump is designed as a diaphragm or piston pump.
  • the simplest of these types of pumps are the pressures and flow velocities which are appropriate in the present application.
  • the preparation container and the compression container are free of a built-in rotating mixing element.
  • the cement suspension in the containers is mixed solely by circulation through the circulation lines. This simplifies the device and protects the cement suspension.
  • the device according to the drawing comprises a processing device 1 and a pressing device 2, which are connected to one another via a transfer hose 3.
  • a treatment tank 4 is arranged above a treatment pump 5, the underside of the treatment tank 4 being connected to the inlet 6 of the treatment pump 5 via a connecting piece.
  • the transfer hose 3, which is provided near the treatment pump with a shut-off valve 8, is connected to the outlet 7 of the treatment pump 5, and on the other hand is a tubular circuit line 9 connected, which is provided with a shut-off valve and is guided into the top of the processing container 4, which is provided with a lid 11.
  • a sieve 12 is arranged, which is illustrated in FIG. 3 and is provided with narrow openings 13.
  • the processing container 4 is enclosed by a cooling device 14 which has an annular space in which a conduit coil 15 runs, which is connected at both ends to a refrigeration unit 16.
  • Liquid coolant e.g. B. water mixed with glycol
  • the coolant then flows through a container 19 and is pressed out of this by a pump 20 via the outlet 18 into the cooling device 14.
  • a refrigerant 21 works on the container 19 by means of a helical line. According to FIG. B. whose pump 20 is working.
  • the transfer hose 3 enters the top of a compression container 24, which is closed by a cover 25 and the underside of which is connected via a connecting piece to the inlet 26 of a compression pump 27, which, for. B. is a diaphragm pump or a piston pump.
  • a compression pump 27 which, for. B. is a diaphragm pump or a piston pump.
  • a long compression hose 29 is connected, which carries a pressure gauge 32, runs out in a compression nozzle 30 and has a shut-off valve 31 close to it.
  • a circuit line 33 is also connected to the outlet 28 and is provided with a shut-off valve 34 and opens into the top of the compression container 24.
  • the pressing device 2 is with a control device, a temperature sensor and also provided a refrigeration unit in the same way as is shown and described in connection with the processing device 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

A device is provided in which a preparation tank 4 is connected to the inlet of a preparation pump 5 and, for a cement suspension circulation, is for its part connected by means of a circulation line 9 to the outlet of the preparation pump 5, and in which an injecting tank 24 is connected to the inlet of an injecting pump 27 and, for a cement suspension circulation, is for its part connected by means of a circulation line 33 to the outlet of the injecting pump 24. It is in this case desired for this device to be suitable in an improved way for a cement suspension of fine cement. This is achieved by a screen 12 being fitted in the circulation line 9 of the preparation pump 5 and by the preparation tank 4 and the injecting tank 24 in each case being surrounded by a cooling device 14 through which coolant flows and which is connected to a refrigerating unit 16 through which the coolant flows. The screen in the circulation line has the effect of preventing any formation of lumps and, since the cooling devices are provided, the preparation pump and the injecting pump can operate at higher speeds. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Aufbereiten und Verpressen einer Zementsuspension, bei der an den Einlaß einer Aufbereitungspumpe ein Aufbereitungsbehälter angeschlossen ist, der seinerseits für einen Zementsuspensionskreislauf mittels einer Kreislaufleitung an den Auslaß der Aufbereitungspumpe angeschlossen ist, bei der an den Einlaß einer Verpreßpumpe ein Verpreßbehälter angeschlossen ist, der seinerseits für einen Zementsuspensionskreislauf mittels einer Kreislaufleitung an den Auslaß der Verpreßpumpe angeschlossen ist, wobei die Zementsuspension in Verpreßpausen über die Verpreßpumpe und die Kreislaufleitung umläuft, bei der der Auslaß der Aufbereitungspumpe über ein Überleitungsschlauchende dem Verpreßbehälter zuzuordnen ist und an den Auslaß der Verpreßpumpe ein Verpreßschlauch angeschlossen ist, der mit einer Verpreßdüse am freien Ende versehen ist, und bei der die Kreislaufleitung der Aufbereitungspumpe, die Überleitung, die Kreislaufleitung der Verpreßpumpe und der Verpreßschlauch mittels Absperrhahn absperrbar sind.The invention relates to a device for processing and grouting a cement suspension, in which a processing tank is connected to the inlet of a processing pump, which in turn is connected for a cement suspension circuit by means of a circuit line to the outlet of the processing pump, in which a grouting tank is connected to the inlet of a grouting pump which, in turn, is connected for a cement suspension circuit by means of a circuit line to the outlet of the injection pump, the cement suspension circulating in injection breaks via the injection pump and the circuit line, in which the outlet of the treatment pump is to be assigned to the injection container via an end hose and to the outlet of the injection pump a compression hose is connected, which is provided with a compression nozzle at the free end, and in which the circuit line of the treatment pump, the transfer line, the circuit line g of the injection pump and the injection hose can be shut off using a shut-off valve.

Bei einer bekannten (DE-U-7 214 103) Vorrichtung dieser Art ist zwecks Zerkleinerung von Klumpen in der Zementsuspension die Aufbereitungspumpe als Kreiselpumpe mit einem verstellbaren Mahlspalt ausgebildet. Der Aufbereitungsbehälter und der Verpreßbehälter sind der jeweiligen Umgebungstemperatur ausgesetzt. Diese Vorrichtung ist auf das Aufbereiten und Verpressen von Normalzement abgestellt, wobei die Aufbereitungspumpe und die Verpreßpumpe relativ niedertourig arbeiten, ohne daß ein Verklumpen auftritt. Für das Verarbeiten von Feinzement ist die bekannte Vorrichtung nicht geeignet.In a known (DE-U-7 214 103) device of this type, for the purpose of comminuting lumps in the cement suspension, the treatment pump is designed as a centrifugal pump with an adjustable grinding gap. The preparation tank and the compression tank are exposed to the respective ambient temperature. This device is geared towards the preparation and compression of normal cement, the treatment pump and the injection pump operating at relatively low speed without clumping occurring. The known device is not suitable for processing fine cement.

Eine Aufgabe der Erfindung ist es somit, eine Vorrichtung der eingangs genannten Art , die mit größeren Chargen arbeitet, die für mehrere zeitlich voneinander getrennte Verpreßvorgänge vorgesehen sind, wobei die Zementsuspension der großen Chargen auch bei der Verpreßeinrichtung über eine verlängerte Zeitspanne in einem brauchbaren Zustand zu halten ist, derart zu schaffen, daß sie für Feinzement geeignet ist. Die erfindungsgemäße Vorrichtung ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß in die Kreislaufleitung der Aufbereitungspumpe ein Sieb eingesetzt ist und daß der Aufbereitungsbehälter und der Verpreßbehälter jeweils von einer von Kühlmittel durchflossenen Kühleinrichtung umgeben ist, die an ein von dem Kühlmittel durchflossenes Kühlaggregat angeschlossen ist.An object of the invention is therefore a device of the type mentioned that with larger batches works, which are provided for several temporally separate grouting operations, the cement suspension of the large batches must also be kept in a usable state in the grouting device over a prolonged period of time, in such a way that it is suitable for fine cement. The device according to the invention is solving this problem, characterized in that a sieve is inserted into the circuit line of the treatment pump and that the treatment container and the compression container are each surrounded by a cooling device through which coolant flows, which is connected to a cooling unit through which the coolant flows.

Durch das Sieb in der Kreislaufleitung wird jegliche Verklumpung unterbunden. Dieses Sieb bildet in der Kreislaufleitung einen verringerten Querschnitt mit einer Vielzahl kleiner Durchlässe. Wenn die Suspension mit relativ hohem Druck durch das Sieb gepreßt wird, dann werden in der Suspension befindliche Klümpchen zerteilt. Da die Kühleinrichtungen vorgesehen sind, können die Aufbereitungspumpe und die Verpreßpumpe hochtouriger arbeiten. Mittels des Kälteaggregates läßt sich das flüssige Kühlmittel auf eine Temperatur von - 5 C bis - 10° C halten, was eine gezielt steuerbare Kühlung der Zementsuspension ermöglicht. Die Vorrichtung ist auf das Aufbereiten und Verpressen von Feinzement abgestimmt.Any clumping is prevented by the sieve in the circuit line. This strainer forms a reduced cross-section in the circuit line with a large number of small passages. When the suspension is pressed through the screen at a relatively high pressure, lumps in the suspension are broken up. Since the cooling devices are provided, the treatment pump and the injection pump can work at high speed. By means of the cooling unit, the liquid coolant can be kept at a temperature of from -5 ° C. to -10 ° C., which enables a specifically controllable cooling of the cement suspension. The device is designed for the preparation and grouting of fine cement.

Die mittels der Aufbereitungspumpe aufbereitete und gemischte Zementsuspension, die in einer sehr viel größeren Charge vorliegt, wird mittels der Aufbereitungspumpe von der Aufbereitungseinrichtung weggefördert, so daß der Aufbereitungsbehälter hierzu nicht bewegt werden muß. Diese Zementsuspension wird bei der Verpreßeinrichtung über eine lange Zeitspanne in einem brauchbaren Zustand gehalten, weil ein Kreislauf vorgesehen ist, der die Zementsuspension in Bewegung hält und mischt und weil die Zementsuspension im Verpreßbehälter gekühlt wird, so daß eine Erwärmung durch die den Kreislauf betreibende Verpreßpumpe verhindert wird. Das Arbeiten mit der erfindungsgemäßen Vorrichtung ist vereinfacht und beschleunigt.The cement suspension prepared and mixed by means of the treatment pump, which is in a much larger batch, is conveyed away from the treatment device by means of the treatment pump, so that the treatment container does not have to be moved for this purpose. This cement suspension is kept in a usable state in the compression device over a long period of time because a circuit is provided which keeps the cement suspension in motion and mixes and because the cement suspension is cooled in the compression container so that it is heated by the injection pump operating the circuit is prevented. Working with the device according to the invention is simplified and accelerated.

Es ist möglich, die Wegförderung der Zementsuspension von der Aufbereitungseinrichtung über den Kreislaufschlauch zu bewerkstelligen und hierzu dessen freies Ende in den Verpreßbehälter zu stecken. In der Regel ist jedoch ein gesonderter Überleitungsschlauch vorgesehen, der an den Auslaß der Aufbereitungspumpe angeschlossen ist und mit einem Absperrhahn versehen absperrbar ist. Das Umstellen von Kreislaufbetrieb der Aufbereitungseinrichtung auf Überleitung zur Verpreßeinrichtung läßt sich einfacher, sauberer und ohne Unterbrechung der Suspensionsbewegung durchführen. Das freie Ende des Überleitungsschlauches wird in der Regel in den Verpreßbehälter gesteckt. Wenn die Verpreßeinrichtung von der Aufbereitungseinrichtung sehr weit entfernt ist, ist es auch möglich, das freie Ende des Überleitungsschlauches in einen Zwischenbehälter zu stecken, der gefüllt mit Zementsuspension mittels Kran zur Auspreßeinrichtung gebracht wird.It is possible to carry the cement suspension away from the processing device via the circuit hose and to insert its free end into the compression container for this purpose. As a rule, however, a separate transfer hose is provided, which is connected to the outlet of the treatment pump and can be shut off provided with a shut-off valve. The switch from circulatory operation of the processing device to transfer to the pressing device can be carried out more easily, more cleanly and without interrupting the suspension movement. The free end of the transfer hose is usually inserted into the compression container. If the pressing device is very far away from the processing device, it is also possible to insert the free end of the transfer hose into an intermediate container which is filled with cement suspension and brought to the pressing device by means of a crane.

Besonders zweckmäßig und vorteilhaft ist es, wenn die Aufbereitungspumpe eine Kreiselpumpe mit Schaufelrad ist. Eine Kreiselpumpe kann für den vorliegenden Fall zweckmäßige hohe Drücke liefern, die für eine beschleunigte Aufbereitungsmischung und für eine beschleunigte Überleitung der Zementsuspension günstig ist.It is particularly expedient and advantageous if the treatment pump is a centrifugal pump with a paddle wheel. For the present case, a centrifugal pump can deliver expedient high pressures which are favorable for an accelerated preparation mixture and for an accelerated transfer of the cement suspension.

Besonders zweckmäßig und vorteilhaft ist es auch, wenn der Aufbereitungsbehälter und der Verpreßbehälter beim Betrieb nach oben hin geschlossen sind. Durch den Verschluß, z. B. mittels eines Deckels, werden baustellenbedingte Verunreinigungen der Zementsuspension vermieden.It is also particularly expedient and advantageous if the processing container and the compression container are closed at the top during operation. Through the closure, e.g. B. by means of a cover, site-related contamination of the cement suspension are avoided.

Besonders zweckmäßig und vorteilhaft ist es ebenso, wenn eine Steuereinrichtung einerseits von einem Temperaturfühler, der in dem Behälter angeordnet ist, beaufschlagt ist und andererseits auf das Kälteaggregat arbeitet. Diese, in der Regel sowohl dem Aufbereitungsbehälter als auch dem Verpreßbehälter zugeordnete Steuereinrichtung bringt eine Vereinfachung des Betriebes der Vorrichtung.It is also particularly expedient and advantageous if a control device on the one hand by one Temperature sensor which is arranged in the container, is acted upon and on the other hand works on the refrigeration unit. This control device, which is generally assigned to both the treatment tank and the compression tank, simplifies the operation of the device.

Besonders zweckmäßig und vorteilhaft ist es weiterhin, wenn das Sieb von einem Lochblech gebildet ist. Ein solches Lochblech-Sieb ist sehr viel stabiler bzw. kräftiger als ein Maschen- bzw. Drahtsieb und damit auf die zu berücksichtigenden relativ hohen Drücke besser abgestimmt.It is also particularly expedient and advantageous if the sieve is formed from a perforated plate. Such a perforated plate sieve is much more stable or stronger than a mesh or wire sieve and thus better matched to the relatively high pressures to be taken into account.

Besonders zweckmäßig und vorteilhaft ist es sodann, wenn das Sieb Siebdurchbrüche aufweist, deren Querschnitt sich in Durchströmrichtung verringert. Dies fördert die Zerkleinerung von in der Zementsuspension enthaltenen Teilchen.It is then particularly expedient and advantageous if the sieve has sieve openings whose cross-section is reduced in the flow direction. This promotes the crushing of particles contained in the cement suspension.

Eine besonders zweckmäßige und vorteilhafte Ausführungsform der Erfindung liegt vor, wenn mindestens zwei Siebe, deren Siebdurchbrüche im Querschnitt verschieden groß sind, nacheinander vorgesehen sind. Diese zwei oder drei oder mehrere nacheinander mit abnehmendem Querschnitt vorgesehenen Siebe lassen das Zerkleinern größerer Teilchen stufenweise und damit einfacher zu, als wenn nur ein Sieb vorgesehen ist, dessen Durchbrüche den auf die erwünschte Feinheit abgestimmten kleinen Querschnitt haben.A particularly expedient and advantageous embodiment of the invention exists if at least two sieves, the sieve openings of which have different cross-sections, are provided one after the other. These two or three or more sieves which are provided one after the other with a decreasing cross-section allow the crushing of larger particles in stages and thus more easily than if only one sieve is provided, the openings of which have the small cross-section matched to the desired fineness.

Es sind z. B. zwei, drei oder mehr Siebe räumlich nacheinander fest in die Kreislaufleitung eingebaut, wobei in Durchströmrichtung zunächst die Siebdurchbrüche größten Querschnitts und am Schluß die Siebdurchbrüche kleinsten Querschnitts angeordnet sind. Es ist auch möglich, jeweils nur ein Sieb auswechselbar in die Kreislaufleitung einzubringen, wobei zeitlich nacheinander zunächst die Siebdurchbrüche größten Querschnitts und am Schluß die Siebdurchbrüche kleinsten Querschnitts eingesetzt werden.There are e.g. B. two, three or more screens spatially one after the other firmly installed in the circuit line, the screen openings of the largest cross-section being arranged in the flow direction and finally the screen openings of the smallest cross-section being arranged. It is also possible to insert only one sieve replaceably into the circuit line, the sieve openings being largest one after the other in time Cross-section and at the end the screen openings of the smallest cross-section are used.

Besonders zweckmäßig und vorteilhaft ist es auch, wenn die Verpreßpumpe als Membran- oder Kolbenpumpe ausgebildet ist. Diese Pumpenarten ermöglichen am einfachsten diejenigen Drücke und Fließgeschwindigkeiten, die im vorliegenden Anwendungsfall angebracht sind.It is also particularly expedient and advantageous if the compression pump is designed as a diaphragm or piston pump. The simplest of these types of pumps are the pressures and flow velocities which are appropriate in the present application.

Besonders zweckmäßig und vorteilhaft ist es ebenso, wenn der Aufbereitungsbehälter und der Verpreßbehälter frei von einem eingebauten rotierenden Mischorgan sind. Das Mischen der Zementsuspension in den Behältern erfolgt allein durch Umlauf über die Kreislaufleitungen. Dies vereinfacht die Vorrichtung und schont die Zementsuspension.It is also particularly expedient and advantageous if the preparation container and the compression container are free of a built-in rotating mixing element. The cement suspension in the containers is mixed solely by circulation through the circulation lines. This simplifies the device and protects the cement suspension.

In der Zeichnung ist eine bevorzugte Ausführungsform der Erfindung dargestellt und zeigt

Fig. 1
schematisch eine Vorrichtung zum Aufbereiten und Verpressen einer Zementsuspension,
Fig. 2
schematisch ein Kälteaggregat der Vorrichtung gemäß Fig. 1 in einem gegenüber Fig. 1 vergrößerten Maßstab und
Fig. 3
ein Sieb der Vorrichtung gemäß Fig. 1 in einem gegenüber Fig. 1 vergrößerten Maßstab.
In the drawing, a preferred embodiment of the invention is shown and shows
Fig. 1
schematically a device for preparing and pressing a cement suspension,
Fig. 2
schematically a refrigeration unit of the device according to FIG. 1 on an enlarged scale compared to FIG. 1 and
Fig. 3
a screen of the device of FIG. 1 on an enlarged scale compared to FIG. 1.

Die Vorrichtung gemäß Zeichnung umfaßt eine Aufbereitungseinrichtung 1 und eine Verpreßeinrichtung 2, die über einen Überleitungsschlauch 3 miteinander verbunden sind. Bei der Aufbereitungseinrichtung 1 ist ein Aufbereitungsbehälter 4 über einer Aufbereitungspumpe 5 angeordnet, wobei die Unterseite des Aufbereitungsbehälters 4 über einen Stutzen an den Einlaß 6 der Aufbereitungspumpe 5 angeschlossen ist. An den Auslaß 7 der Aufbereitungspumpe 5 ist einerseits der Überleitungsschlauch 3, der nahe der Aufbereitungspumpe mit einem Absperrhahn 8 versehen ist, angeschlossen, und ist andererseits eine rohrartige Kreislaufleitung 9 angeschlossen, die mit einem Absperrhahn versehen ist und in die Oberseite des Aufbereitungsbehälters 4 geführt ist, der mit einem Deckel 11 versehen ist. In dem in den Aufbereitungsbehälter 4 ragenden Endstück der Kreislaufleitung 9 ist ein Sieb 12 angeordnet, das in Fig. 3 verdeutlicht ist und mit engen Durchbrüchen 13 versehen ist.The device according to the drawing comprises a processing device 1 and a pressing device 2, which are connected to one another via a transfer hose 3. In the treatment device 1, a treatment tank 4 is arranged above a treatment pump 5, the underside of the treatment tank 4 being connected to the inlet 6 of the treatment pump 5 via a connecting piece. On the one hand, the transfer hose 3, which is provided near the treatment pump with a shut-off valve 8, is connected to the outlet 7 of the treatment pump 5, and on the other hand is a tubular circuit line 9 connected, which is provided with a shut-off valve and is guided into the top of the processing container 4, which is provided with a lid 11. In the end piece of the circulation line 9 projecting into the processing container 4, a sieve 12 is arranged, which is illustrated in FIG. 3 and is provided with narrow openings 13.

Der Aufbereitungsbehälter 4 ist von einer Kühleinrichtung 14 umschlossen, die einen Ringraum aufweist, in dem eine Leitungswendel 15 verläuft, die beiderends an ein Kälteaggregat 16 angeschlossen ist. Flüssiges Kühlmittel, z. B. mit Glycol vermischtes Wasser, durchfließt die Kühleinrichtung 14 und gelangt gemäß Fig. 2 über einen Einlaß 17 in das Kälteaggregat 16, um dieses bei einem Auslaß 18 zu verlassen. Das Kühlmittel durchströmt dann einen Behälter 19 und wird aus diesem von einer Pumpe 20 über den Auslaß 18 in die Kühleinrichtung 14 gedrückt. Auf den Behälter 19 arbeitet mittels einer Wendelleitung ein Kälteerzeuger 21. Gemäß Fig. 1 ist im Aufbereitungsbehälter 4 ein Temperaturfühler 22 angebracht, der über eine elektrische Leitung auf eine einstellbare Steuereinrichtung 23 arbeitet, die ihrerseits über eine elektrische Leitung auf das Kälteaggregat 16, z. B. dessen Pumpe 20 arbeitet.The processing container 4 is enclosed by a cooling device 14 which has an annular space in which a conduit coil 15 runs, which is connected at both ends to a refrigeration unit 16. Liquid coolant, e.g. B. water mixed with glycol, flows through the cooling device 14 and passes according to FIG. 2 via an inlet 17 into the refrigeration unit 16 in order to leave it at an outlet 18. The coolant then flows through a container 19 and is pressed out of this by a pump 20 via the outlet 18 into the cooling device 14. A refrigerant 21 works on the container 19 by means of a helical line. According to FIG. B. whose pump 20 is working.

Der Überleitungsschlauch 3 tritt in die Oberseite eines Verpreßbehälters 24 ein, der mittels eines Deckels 25 verschlossen ist und dessen Unterseite über einen Stutzen an den Einlaß 26 einer Verpreßpumpe 27 angeschlossen ist, die z. B. eine Membranpumpe oder eine Kolbenpumpe ist. Mit dem Auslaß 28 der Verpreßpumpe 27 ist ein langer Verpreßschlauch 29 verbunden, der ein Manometer 32 trägt, in einer Verpreßdüse 30 ausläuft und dicht bei dieser einen Absperrhahn 31 aufweist. Mit dem Auslaß 28 ist auch eine Kreislaufleitung 33 verbunden, die mit einem Absperrhahn 34 versehen ist und in die Oberseite des Verpreßbehälters 24 mündet. Die Verpreßeinrichtung 2 ist mit einer Steuereinrichtung, einem Temperaturfühler und auch einem Kälteaggregat in gleicher Weise versehen, wie es in Verbindung mit der Aufbereitungseinrichtung 1 gezeigt und beschrieben ist.The transfer hose 3 enters the top of a compression container 24, which is closed by a cover 25 and the underside of which is connected via a connecting piece to the inlet 26 of a compression pump 27, which, for. B. is a diaphragm pump or a piston pump. With the outlet 28 of the compression pump 27, a long compression hose 29 is connected, which carries a pressure gauge 32, runs out in a compression nozzle 30 and has a shut-off valve 31 close to it. A circuit line 33 is also connected to the outlet 28 and is provided with a shut-off valve 34 and opens into the top of the compression container 24. The pressing device 2 is with a control device, a temperature sensor and also provided a refrigeration unit in the same way as is shown and described in connection with the processing device 1.

Claims (9)

Vorrichtung zum Aufbereiten und Verpressen einer Zementsuspension,
bei der an den Einlaß einer Aufbereitungspumpe (5) ein Aufbereitungsbehälter (4) angeschlossen ist, der seinerseits für einen Zementsuspensionskreislauf mittels einer Kreislaufleitung (9) an den Auslaß der Aufbereitungspumpe (5) angeschlossen ist,
bei der an den Einlaß einer Verpreßpumpe (27) ein Verpreßbehälter (24) angeschlossen ist, der seinerseits für einen Zementsuspensionskreislauf mittels einer Kreislaufleitung (33) an den Auslaß der Verpreßpumpe (24) angeschlossen ist
wobei die Zementsuspension in Verpreßpausen über die Verpreßpumpe und die Kreislaufleitung (33) umläuft, bei der der Auslaß der Aufbereitungspumpe (5) über ein Überleitungsschlauchende dem Verpreßbehälter (24) zuzuordnen ist und an den Auslaß der Verpreßpumpe (27) ein Verpreßschlauch (29) angeschlossen ist, der mit einer Verpreßdüse (30) am freien Ende versehen ist, und
bei der die Kreislaufleitung (9) der Aufbereitungspumpe (5), die Überleitung (3), die Kreislaufleitung (33) der Verpreßpumpe (27) und der Verpreßschlauch (29) mittels Absperrhahn (18, 10, 31, 34) absperrbar sind,
dadurch gekennzeichnet,
daß in die Kreislaufleitung (9) der Aufbereitungspumpe (5) ein Sieb (12) eingesetzt ist und daß der Aufbereitungsbehälter (4) und der Verpreßbehälter (24) jeweils von einer von Kühlmittel durchflossenen Kühleinrichtung (14) umgeben ist, die an ein von dem Kühlmittel durchflossenes Kälteaggregat (16) angeschlossen ist.
Device for processing and pressing a cement suspension,
in which a treatment tank (4) is connected to the inlet of a treatment pump (5), which in turn is connected to the outlet of the treatment pump (5) for a cement suspension circuit by means of a circuit line (9),
in which a compression container (24) is connected to the inlet of a compression pump (27), which in turn is connected to the outlet of the compression pump (24) for a cement suspension circuit by means of a circuit line (33)
the cement suspension circulating in grouting pauses via the grouting pump and the circuit line (33), in which the outlet of the treatment pump (5) is to be assigned to the grouting container (24) via a transfer hose end and a grouting hose (29) is connected to the outlet of the grouting pump (27) is, which is provided with a pressing nozzle (30) at the free end, and
in which the circuit line (9) of the treatment pump (5), the transfer line (3), the circuit line (33) of the compression pump (27) and the compression hose (29) can be shut off by means of a shut-off valve (18, 10, 31, 34),
characterized,
that in the circuit line (9) of the treatment pump (5) a sieve (12) is inserted and that the treatment container (4) and the compression container (24) are each surrounded by a coolant through which a cooling device (14) which is connected to one of the Cooling unit through which the refrigeration unit (16) is connected.
Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Aufbereitungspumpe (5) eine Kreiselpumpe mit Schaufelrad ist.Device according to claim 1, characterized in that the treatment pump (5) is a centrifugal pump with a paddle wheel. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Aufbereitungsbehälter (4) und der Verpreßbehälter (24) beim Betrieb nach oben hin abgeschlossen sind.Apparatus according to claim 1 or 2, characterized in that the processing container (4) and the pressing container (24) are closed at the top during operation. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß eine Steuereinrichtung (23) einerseits von einem Temperaturfühler (22), der in dem Behälter (4, 24) angeordnet ist, beaufschlagt ist und andererseits auf das Kälteaggregat (16) arbeitet.Apparatus according to claim 1, 2 or 3, characterized in that a control device (23) is acted on the one hand by a temperature sensor (22) which is arranged in the container (4, 24) and on the other hand works on the refrigeration unit (16). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Sieb (12) von einem Lochblech gebildet ist.Device according to one of the preceding claims, characterized in that the screen (12) is formed by a perforated plate. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Sieb (12) Siebdurchbrüche (13) aufweist, deren Querschnitt sich in Durchströmrichtung verringert.Device according to one of the preceding claims, characterized in that the screen (12) has screen openings (13), the cross section of which decreases in the direction of flow. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens zwei Siebe (12), deren Siebdurchbrüche (13) im Querschnitt verschieden groß sind, nacheinander vorgesehen sind.Device according to one of the preceding claims, characterized in that at least two screens (12), the screen openings (13) of which are different in cross-section, are provided in succession. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verpreßpumpe (27) als Membran- oder Kolbenpumpe ausgebildet ist.Device according to one of the preceding claims, characterized in that the compression pump (27) is designed as a diaphragm or piston pump. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Aufbereitungsbehälter (4) und der Verpreßbehälter (24) frei von einem eingebauten rotierenden Mischorgan sind.Device according to one of the preceding claims, characterized in that the processing container (4) and the pressing container (24) are free of an installed rotating mixing element.
EP92101407A 1991-02-06 1992-01-29 Device for making and pressing a cement suspension Expired - Lifetime EP0498279B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9218689U DE9218689U1 (en) 1991-02-06 1992-01-29 Device for processing and grouting a cement suspension

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4103475A DE4103475A1 (en) 1991-02-06 1991-02-06 DEVICE FOR PREPARING AND COMPRESSING A CEMENT SUSPENSION
DE4103475 1991-02-06

Publications (2)

Publication Number Publication Date
EP0498279A1 true EP0498279A1 (en) 1992-08-12
EP0498279B1 EP0498279B1 (en) 1995-08-02

Family

ID=6424436

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Application Number Title Priority Date Filing Date
EP92101407A Expired - Lifetime EP0498279B1 (en) 1991-02-06 1992-01-29 Device for making and pressing a cement suspension

Country Status (6)

Country Link
EP (1) EP0498279B1 (en)
AT (1) ATE125730T1 (en)
DE (3) DE4103475A1 (en)
DK (1) DK0498279T3 (en)
ES (1) ES2075482T3 (en)
GR (1) GR3017525T3 (en)

Cited By (2)

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EP0768113A1 (en) * 1995-10-11 1997-04-16 Dyckerhoff Aktiengesellschaft Process and device for manufacturing fine cement/ultrafine binder suspensions
WO2000035645A1 (en) * 1998-12-11 2000-06-22 Senad Teknikbetong Ab Preparation method and arrangement therefore

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GB694117A (en) * 1950-09-11 1953-07-15 Colcrete Ltd Improvements in cement mixers
GB975637A (en) * 1962-03-02 1964-11-18 Colcrete Ltd Improvements in cement mixers
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Publication number Priority date Publication date Assignee Title
EP0768113A1 (en) * 1995-10-11 1997-04-16 Dyckerhoff Aktiengesellschaft Process and device for manufacturing fine cement/ultrafine binder suspensions
DE19537874A1 (en) * 1995-10-11 1997-04-17 Dyckerhoff Ag Process and device for the production of fine cement / fine binder suspensions
WO2000035645A1 (en) * 1998-12-11 2000-06-22 Senad Teknikbetong Ab Preparation method and arrangement therefore
US6561737B1 (en) 1998-12-11 2003-05-13 Senad Teknikbetong Ab Arrangement for post preparation of an injection compound
KR100665392B1 (en) * 1998-12-11 2007-01-04 세나드 테크니크베통 아베 Preparation method and arrangement therefore

Also Published As

Publication number Publication date
DK0498279T3 (en) 1995-09-18
ES2075482T3 (en) 1995-10-01
DE4103475A1 (en) 1992-08-20
EP0498279B1 (en) 1995-08-02
DE59203062D1 (en) 1995-09-07
DE9218689U1 (en) 1995-02-23
GR3017525T3 (en) 1995-12-31
ATE125730T1 (en) 1995-08-15

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