EP0757756B1 - Thick matter pump - Google Patents

Thick matter pump Download PDF

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Publication number
EP0757756B1
EP0757756B1 EP95917350A EP95917350A EP0757756B1 EP 0757756 B1 EP0757756 B1 EP 0757756B1 EP 95917350 A EP95917350 A EP 95917350A EP 95917350 A EP95917350 A EP 95917350A EP 0757756 B1 EP0757756 B1 EP 0757756B1
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EP
European Patent Office
Prior art keywords
pipe
cleaning
conveyor
thick matter
material feed
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
Application number
EP95917350A
Other languages
German (de)
French (fr)
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EP0757756A1 (en
Inventor
Klaus BÜHRER
Hellmut Hurr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Putzmeister AG filed Critical Putzmeister AG
Priority to EP97111499A priority Critical patent/EP0805273B1/en
Priority to EP97111498A priority patent/EP0805272B1/en
Publication of EP0757756A1 publication Critical patent/EP0757756A1/en
Application granted granted Critical
Publication of EP0757756B1 publication Critical patent/EP0757756B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0233Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers
    • F04B7/0258Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an orbital movement, e.g. elbow-pipe type members

Definitions

  • the invention relates to a thick matter pump with a material feed container, two with theirs end openings in the interior of the material feed container opening, hydraulically driven delivery cylinders , one in the material feed container engaging, alternating with one end in cycles with the front openings of the feed cylinders communicating and with its other end at one Conveyor tube connected swivel tube and with an in close to the end of the delivery pipe on the swivel tube side or in an outside of the material feed container arranged section of the swivel tube in the relevant Pipe wall arranged closable cleaning opening.
  • Thick matter pumps of this type are primarily used for pumping of concrete and more or less viscous Sludges are used, which solidify after long periods of inactivity can. Therefore the pipelines of the Thick matter pump and the material feed container at the end of a conveying process can be emptied and cleaned.
  • the Delivery line which is usually on a placing boom in concrete pumps attached, either by sucking it back of the concrete contained in it in the material feed container through the thick matter pump itself or under pressure in the reverse direction with the help of an in the delivery line injected pressure medium, such as compressed air or water.
  • Wiping the Pipelines are made using elastomeric sponge balls or cleaning body, either over the free end of the conveyor pipe sucked to the material feed container or via suitable pipe fittings (EP-A-22 251) in the opposite direction. Further it is known (EP-A-171 796), in the region of the swivel tube lockable cleaning openings in the pipeline wall to be provided through for cleaning purposes access to the inside of the pipeline is possible is. This has not yet been satisfactorily resolved Problem of emptying using the in the material feed container remaining concrete. Also the Handling the sponge balls in the course of cleaning the Pipelines have so far left something to be desired.
  • the invention is based on the object the known concrete pumps of the initially mentioned kind of improving that the conveyor pipe can be emptied and cleaned in a few simple steps can.
  • the invention proposes in the pipe wall of the conveyor pipe and / or the swivel tube already existing cleaning openings in addition to introducing sponge balls on the one hand and / or for emptying the material feed container to use on the other hand and to those in the pipe wall the delivery pipe and / or the swivel pipe lockable cleaning opening one-sided open to the cleaning opening, at least one Cleaning cartridge with compressed air and / or pressurized water connection connect, with the conveyor pipe and / or the swivel tube on the delivery cylinder side by means of a Shut-off device is closable.
  • the cleaning cartridge is advantageously by means of a locking member, in particular a gate valve lockable towards the cleaning opening.
  • a locking member in particular a gate valve lockable towards the cleaning opening.
  • the cleaning cartridge in the area of the cleaning opening articulated on the conveyor tube or swivel tube so that it from the cleaning opening, preferably when it is closed Gate valve releasing their front Opening is pivotable.
  • the same result can be achieved in that the cleaning cartridge and the gate valve rigidly connected to each other and optional are movable against the cleaning opening.
  • the cleaning slide can also be used for two cleaning cartridges be connected, optionally with sponge balls, Cleaning pigs or filled with liquid-filled bags can be.
  • a transport pipe can also be attached to the cleaning opening connected via which the material feed container with the help of the delivery cylinder except for one small remaining amount can be emptied.
  • a conveyor tube or swivel tube Shut-off device closing towards the free end of the conveyor pipe intended.
  • the invention proposed that the in Material feed container opening front cylinder openings at least partially against air ingress from the material feed container to the vicinity of the container base preferably covered by a slider or are lockable.
  • the shut-off device can be used, for example, as a gate valve be formed, which is useful in the area of a Conveyor pipe-side connection flange outside the material feed container is arranged.
  • the shut-off device can also be used as a Pipe inside against the conveyor pipe or swivel pipe wall compressible, preferably deformable under pressure Be formed sealing body of the Cleaning cartridge from in the conveyor or swivel tube insertable and in this preferably by means of a limp, band or chain-like holding member is positionable.
  • a sealing body not unintentionally from the conveyor pipe or the Swivel tube is pushed out, regardless of the holding element or in addition to it into the inside of the pipe, preferably engaging from the cleaning opening Seat or support element for the sealing body be provided.
  • a preferred embodiment of the Invention provides that the sealing body as under the Exposure to a pressure medium, preferably compressed air or hydraulic fluid spreadable, and against the inner surface of the tube or ball can be pressed is.
  • the two-cylinder slurry pumps shown in the drawing are for use in stationary and mobile concrete pumps determined. They essentially exist from two delivery cylinders 10 with hydraulic in Push-pull driven delivery piston 12, a material feed container 14 and one with a swivel tube 16 engaging in the material feed container 14, with a reversing mechanism 18 actuable slide device 20.
  • the feed cylinder 10 are in the lower area via openings 22 to the rear wall 24 of the material feed container 14 connected, the openings 22 on the inside of the material feed container 14 through an eyeglass-shaped wear plate 26 are limited.
  • the swivel tube 16 lies with its one a wear ring 28 bearing end against the Wear plate 26 and is by the reversing mechanism 18 depending on the direction of movement the delivery piston 12 in the delivery cylinders 10 in front of the one or the other opening 22 is pivoted. In this way is when the delivery piston is moved back in the direction of arrow 30 12 Material from the material feed container 14 through the opening 22 in the direction of arrow 32 in the relevant feed cylinder 10 sucked in while over the other delivery piston 12 material in the direction arrows 34, 36, 38 through the swivel tube 16 into an outside of the material feed container 14 Delivery pipe 42 is transported.
  • the conveyor pipe 42 can on a delivery line, not shown of a concrete placing boom.
  • FIGS. 1 and 3 differ mainly in the shape of the swivel tube 16.
  • this is Swivel tube is essentially S-shaped. It is on its opposite the delivery cylinders End over a container-fixed, to its swivel axis coaxial rotary pipe connection 43 with the delivery pipe 42 connected, and engages on the other side with one designed as a drive shaft axle shaft 45 by a Pivot bearing 47 of the material feed container 14 therethrough.
  • the stub of the axle shaft projecting outwards 45 is rotationally fixed with a reversing lever 46 of the reversing mechanism 18 connected up at his facing end two facing opposite sides, bearings 48 designed as ball sockets for the connection of a piston-side ball head 50 of the two drive cylinders 52 of the reversing mechanism 18 has.
  • the drive cylinders are on the cylinder side 52 with a further ball head 54 in one Supporting cylinder-fixed bearing designed as a ball socket 56 stored.
  • a C-shaped pivot tube 16 that from above into the material feed container 14 engages.
  • the swivel tube 16 is over a Flange 40 with the extension tube Conveyor tube 42 connected, which in turn via a Pipe rotary connection, not shown, to a delivery line a concrete placing boom is connected.
  • the flange 40 is connected by means of two clamping screws 44 the reversing lever 46 of the reversing mechanism 18 releasably connected, the opposite at its lower end two Side-facing ball pans Bearings 48 for the connection of a piston side Ball head 50 of the two drive cylinders 52 of the reversing mechanism 18.
  • On the cylinder side are the drive cylinders 52 with another Ball head 54 in a conveyor cylinder fixed, as Ball socket trained bearing 56 stored.
  • the Drive cylinders 52 can be pressurized with pressure oil on one side and contain a ball head 50 Plunger 60.
  • the pipelines the thick matter pump and the material feed container are emptied and be cleaned.
  • the pipelines the thick matter pump and the material feed container are emptied and be cleaned.
  • cleaning openings 80 are provided, the one with a cover 82 and a coupling member 84 are closable.
  • the cleaning ports 80 optionally one essentially cylindrical cleaning cartridge 86 connected with cleaning bodies 88,88 'or with liquid bags 88 '' equipped and via the connections 90, 92 with pressurized water or compressed air can.
  • a shut-off device is provided on the side of the delivery cylinder, that in the case of FIGS. 2a, b and c and 4a as Gate valve 94.96 and in the case of FIG. 5 as at the Inner surface of the swivel tube 16 compressible inflatable Balloon 98 is formed.
  • the locking slide 94 according to FIGS. 2a to c is located in the area of the pipe joint 43, and is in there Direction of the double arrow 100 is vertically displaceable arranged.
  • the cleaning opening 80 for the connection the cleaning cartridge 86 is in this case on a conveyor tube piece designed as a folding tube 42, which after loosening the quick-release fastener 102 Joint 104 for cleaning purposes with the release of Pipe rotary connection 43 is pivotable.
  • the cleaning cartridge 86 demonstrates in the exemplary embodiment Fig. 2a on a gate valve 106, which during the Conveying process is closed and during the cleaning process can be brought into its open position.
  • the cleaning cartridge 86 the joint 108 can be pivoted relative to the cleaning opening 80, after previously removing the coupling member 84 has been. This way, with a few Handles the opening of the cleaning cartridge 86 to Filling with the cleaning bodies 88 released.
  • Fig. 4a to c is one of two cleaning cartridges 86 and a slide plate 110 existing cartridge valve 112 provided, the to the cleaning opening 80 of the conveyor pipe 42nd is flanged. By moving the cleaning cartridges to the side 86 beyond the base plate 112 the cleaning body 88, 88 ', 88 "from below in the cleaning cartridges 86 are inserted.
  • the gate valve is activated first 96 closed in the conveyor tube 42. Then one of the Cleaning cartridges 86 through the cleaning opening 80 pushed and briefly exposed to water at connection 90, so that two of the three cleaning bodies 88 in the pipeline is pressed in. Then will the water connection is closed and the third cleaning body 88 with compressed air via port 92 in the Delivery line pressed. At the end of the delivery line mounted a discharge stand, not shown, so that the Concrete and the cleaning elements can be safely removed from the delivery line can exit.
  • the cleaning cartridges 86 can also be used as a pumping aid by one filled with a lubricant or lubricant Bag 88 '' inserted with water into the delivery line pressed and then with the concrete to the exit of the Delivery line is pumped.
  • the bag opens 88 '' and distributes its contents on the inner surface the delivery line.
  • the cleaning body for wiping the conveyor line again End of the delivery line through the switch to suction mode Feed pump 10, 12 with shut-off element 94 open, 96.98 conveyed back into the material feed container 14 become. In this way, this also becomes the material feed container leading last conveyor pipe section 42 velvet Swivel tube 16 cleaned.
  • the invention refers to a thick matter pump, in particular a concrete pump with a material feed container 14, two with their end openings 22 into the interior of the material feed container 14 opening conveying cylinders 10, which engages in the material feed container 14, with one end alternating in cycles with the front openings 22 of the feed cylinder communicating and with its other end at one Conveyor tube 42 connected swivel tube 16 and with one near the swivel tube end of the Conveyor tube 42 or in an outside of the material feed container arranged section of the swivel tube 16 arranged closable in the relevant pipe wall Cleaning opening 80.
  • a cleaning cartridge 86 to the cleaning opening 80 connectable, the a compressed air and / or pressurized water connection 90.92, while the conveyor pipe 42nd and / or the swivel tube 16 on the delivery cylinder side by means of a shut-off device 94, 96, 98 can be closed.

Description

Die Erfindung betrifft eine Dickstoffpumpe mit einem Materialaufgabebehälter, zwei mit ihren stirnseitigen Öffnungen in das Innere des Materialaufgabebehälters mündenden, hydraulisch angetriebenen Förderzylindern , einem in den Materialaufgabebehälter eingreifenden, mit seinem einen Ende taktweise abwechselnd mit den stirnseitigen Öffnungen der Förderzylinder kommunizierenden und mit seinem anderen Ende an ein Förderrohr angeschlossenen Schwenkrohr und mit einer in der Nähe des schwenkrohrseitigen Endes des Förderrohrs oder in einem außerhalb des Materialaufgabebehälters angeordneten Abschnitt des Schwenkrohrs in der betreffenden Rohrwand angeordneten verschließbaren Reinigungsöffnung.The invention relates to a thick matter pump with a material feed container, two with theirs end openings in the interior of the material feed container opening, hydraulically driven delivery cylinders , one in the material feed container engaging, alternating with one end in cycles with the front openings of the feed cylinders communicating and with its other end at one Conveyor tube connected swivel tube and with an in close to the end of the delivery pipe on the swivel tube side or in an outside of the material feed container arranged section of the swivel tube in the relevant Pipe wall arranged closable cleaning opening.

Dickstoffpumpen dieser Art werden vor allem zum Fördern von Beton und von mehr oder weniger dickflüssigen Schlämmen eingesetzt, die bei längerem Stillstand erstarren können. Deshalb müssen die Rohrleitungen der Dickstoffpumpe und der Materialaufgabebehälter am Ende eines Fördervorgangs entleert und gereinigt werden. Die Förderleitung, die bei Betonpumpen meist an einem Verteilermast befestigt ist, kann entweder durch Zurücksaugen des in ihr enthaltenen Betons in den Materialaufgabebehälter durch die Dickstoffpumpe selbst oder unter Druck in umgekehrter Richtung mit Hilfe eines in die Förderleitung eingepreßten Druckmittels, wie Druckluft oder Wasser, entleert werden. Das Auswischen der Rohrleitungen erfolgt mittels elastomerer Schwammkugeln oder Reinigungskörper, die entweder über das freie Förderrohrende zum Materialaufgabebehälter gesaugt oder über geeignete Rohrleitungsarmaturen (EP-A-22 251) in die entgegengesetzte Richtung gedrückt werden. Weiter ist es bekannt (EP-A-171 796), im Bereich des Schwenkrohrs verschließbare Reinigungsöffnungen in der Rohrleitungswand vorzusehen, durch die hindurch zu Reinigungszwecken ein Zugriff in das Rohrleitungsinnere möglich ist. Noch nicht befriedigend gelöst ist bisher das Problem der Entleerung unter Verwertung des im Materialaufgabebehälter befindlichen Restbetons. Auch die Handhabung der Schwammkugeln im Zuge der Reinigung der Rohrleitungen läßt bisher zu wünschen übrig.Thick matter pumps of this type are primarily used for pumping of concrete and more or less viscous Sludges are used, which solidify after long periods of inactivity can. Therefore the pipelines of the Thick matter pump and the material feed container at the end of a conveying process can be emptied and cleaned. The Delivery line, which is usually on a placing boom in concrete pumps attached, either by sucking it back of the concrete contained in it in the material feed container through the thick matter pump itself or under pressure in the reverse direction with the help of an in the delivery line injected pressure medium, such as compressed air or water. Wiping the Pipelines are made using elastomeric sponge balls or cleaning body, either over the free end of the conveyor pipe sucked to the material feed container or via suitable pipe fittings (EP-A-22 251) in the opposite direction. Further it is known (EP-A-171 796), in the region of the swivel tube lockable cleaning openings in the pipeline wall to be provided through for cleaning purposes access to the inside of the pipeline is possible is. This has not yet been satisfactorily resolved Problem of emptying using the in the material feed container remaining concrete. Also the Handling the sponge balls in the course of cleaning the Pipelines have so far left something to be desired.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, die bekannten Betonpumpen der eingangs angegebenen Art dahingehend zu verbessern, daß das Förderrohr mit einfachen Handgriffen entleert und gereinigt werden können.Proceeding from this, the invention is based on the object the known concrete pumps of the initially mentioned Kind of improving that the conveyor pipe can be emptied and cleaned in a few simple steps can.

Zur Lösung dieser Aufgabe werden die im Patentanspruch 1 angegebenen Merkmale vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem are in the claim 1 features proposed. Advantageous configurations and further developments of the invention themselves from the dependent claims.

Zur Lösung dieser Aufgabe wird gemäß der Erfindung vorgeschlagen, die in der Rohrwand des Förderrohrs und/ oder des Schwenkrohrs ohnehin vorhandenen Reinigungsöffnungen zusätzlich zum Einschleusen von Schwammkugeln einerseits und/oder zur Entleerung des Materialaufgabebehälters andererseits zu nutzen und an die in der Rohrwand des Förderrohrs und/oder des Schwenkrohrs befindliche verschließbare Reinigungsöffnung eine einseitig zur Reinigungsöffnung hin offene, mindestens einen Preßluft- und/oder Druckwasseranschluß aufweisende Reinigungspatrone anzuschließen, wobei das Förderrohr und/ oder das Schwenkrohr förderzylinderseitig mittels eines Absperrorgans verschließbar ist. Um im Betriebszustand einen Dickstoffzutritt zur Reinigungspatrone zu vermeiden, ist die Reinigungspatrone vorteilhafterweise mittels eines Sperrorgans, insbesondere eines Sperrschiebers zur Reinigungsöffnung hin absperrbar. Zweckmäßig ist die Reinigungspatrone im Bereich der Reinigungsöffnung am Förderrohr oder Schwenkrohr so angelenkt, daß sie von der Reinigungsöffnung vorzugsweise bei geschlossenem Sperrschieber unter Freigabe ihrer stirnseitigen Öffnung wegschwenkbar ist. Das gleiche Ergebnis kann dadurch erzielt werden, daß die Reinigungspatrone und der Sperrschieber starr miteinander verbunden und wahlweise gegen die Reinigungsöffnung verschiebbar sind. Mit dem Sperrschieber können auch zwei Reinigungspatronen verbunden sein, die wahlweise mit Schwammkugeln, Putzmolchen oder mit flüssigkeitsgefüllten Beuteln bestückt werden können.To achieve this object, the invention proposes in the pipe wall of the conveyor pipe and / or the swivel tube already existing cleaning openings in addition to introducing sponge balls on the one hand and / or for emptying the material feed container to use on the other hand and to those in the pipe wall the delivery pipe and / or the swivel pipe lockable cleaning opening one-sided open to the cleaning opening, at least one Cleaning cartridge with compressed air and / or pressurized water connection connect, with the conveyor pipe and / or the swivel tube on the delivery cylinder side by means of a Shut-off device is closable. To in the operating state to prevent thick matter from entering the cleaning cartridge, the cleaning cartridge is advantageously by means of a locking member, in particular a gate valve lockable towards the cleaning opening. Appropriately is the cleaning cartridge in the area of the cleaning opening articulated on the conveyor tube or swivel tube so that it from the cleaning opening, preferably when it is closed Gate valve releasing their front Opening is pivotable. The same result can can be achieved in that the cleaning cartridge and the gate valve rigidly connected to each other and optional are movable against the cleaning opening. The cleaning slide can also be used for two cleaning cartridges be connected, optionally with sponge balls, Cleaning pigs or filled with liquid-filled bags can be.

Nach einer vorteilhaften Weiterbildung der Erfindung kann an die Reinigungsöffnung auch ein Transportrohr angeschlossen werden, über welches der Materialaufgabebehälter mit Hilfe der Förderzylinder bis auf eine kleine Restmenge entleert werden kann. In diesem Falle ist zusätzlich ein das Förderrohr oder das Schwenkrohr zum freien Förderrohrende hin verschließendes Absperrorgan vorgesehen. According to an advantageous development of the invention a transport pipe can also be attached to the cleaning opening connected via which the material feed container with the help of the delivery cylinder except for one small remaining amount can be emptied. In this case is also a conveyor tube or swivel tube Shut-off device closing towards the free end of the conveyor pipe intended.

Um den Materialaufgabebehälter nahezu vollständig entleeren zu können, wird gemäß einer bevorzugten Ausgestaltung der Erfindung vorgeschlagen, daß die in den Materialaufgabebehälter mündenden stirnseitigen Förderzylinderöffnungen zumindest teilweise gegen Luftzutritt aus dem Materialaufgabebehälter bis in die Nähe des Behälterbodens vorzugsweise mittels eines Schiebers abdeckbar oder verschließbar sind.To empty the material supply container almost completely according to a preferred embodiment the invention proposed that the in Material feed container opening front cylinder openings at least partially against air ingress from the material feed container to the vicinity of the container base preferably covered by a slider or are lockable.

Das Absperrorgan kann beispielsweise als Absperrschieber ausgebildet sein, der zweckmäßig im Bereich eines förderrohrseitigen Anschlußflansches außerhalb des Materialaufgabebehälters angeordnet ist.The shut-off device can be used, for example, as a gate valve be formed, which is useful in the area of a Conveyor pipe-side connection flange outside the material feed container is arranged.

Grundsätzlich kann das Absperrorgan auch als in das Rohrinnere gegen die Förderrohr- oder Schwenkrohrwand anpreßbarer, vorzugsweise unter Druckeinwirkung verformbarer Dichtkörper ausgebildet sein, der von der Reinigungspatrone aus in das Förder- oder Schwenkrohr einführbar und in diesem vorzugsweise mittels eines biegeschlaffen, band- oder kettenartigen Halteorgans positionierbar ist. Um sicherzustellen, daß der Dichtkörper nicht ungewollt aus dem Förderrohr oder dem Schwenkrohr herausgedrängt wird, kann unabhängig von dem Halteorgan oder zusätzlich dazu ein in das Rohrinnere, vorzugsweise von der Reinigungsöffnung aus eingreifendes Sitz- oder Stützorgan für den Dichtkörper vorgesehen werden. Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der Dichtkörper als unter der Einwirkung eines Druckmediums, vorzugsweise von Druckluft oder Druckflüssigkeit aufspreizbarer, und gegen die Rohrinnenfläche anpreßbarer Ball oder Ballon ausgebildet ist.Basically, the shut-off device can also be used as a Pipe inside against the conveyor pipe or swivel pipe wall compressible, preferably deformable under pressure Be formed sealing body of the Cleaning cartridge from in the conveyor or swivel tube insertable and in this preferably by means of a limp, band or chain-like holding member is positionable. To ensure that the sealing body not unintentionally from the conveyor pipe or the Swivel tube is pushed out, regardless of the holding element or in addition to it into the inside of the pipe, preferably engaging from the cleaning opening Seat or support element for the sealing body be provided. A preferred embodiment of the Invention provides that the sealing body as under the Exposure to a pressure medium, preferably compressed air or hydraulic fluid spreadable, and against the inner surface of the tube or ball can be pressed is.

Im folgenden wird die Erfindung anhand einiger in der Zeichnung in schematischer Weise dargestellter Ausführungsbeispiele näher erläutert. Es zeigen

Fig. 1
eine schaubildliche Darstellung einer Dickstoffpumpe mit S-förmigem Schwenkrohr;
Fig. 2a bis c
zwei Ausführungsvarianten einer Dickstoffpumpe entsprechend Fig. 1 mit Reinigungspatrone in einer Rückseitenansicht und einer ausschnittsweisen Draufsicht;
Fig. 3
eine schaubildliche Darstellung einer Dickstoffpumpe mit C-förmigem Schwenkrohr;
Fig. 4a
eine Seitenansicht der Dickstoffpumpe nach Fig. 3 in teilweise geschnittener Darstellung;
Fig. 4b und c
einen Schnitt durch die Reinigungspatrone entlang der Schnittlinie A-A der Fig. 4a mit unterschiedlicher Füllung;
Fig. 5
eine Darstellung entsprechend Fig. 4a mit an einer Reinigungsöffnung des Schwenkrohrs angeflanschter Reinigungspatrone;
Fig. 6a
eine Darstellung entsprechend Fig. 5 mit am Schwenkrohr angeflanschtem Transportrohr und mit förderzylinderseitigen Begrenzungsschiebern;
Fig. 6b
eine Stirnseitenansicht der Begrenzungsschieber nach Fig. 6a.
In the following, the invention will be explained in more detail with reference to some exemplary embodiments shown schematically in the drawing. Show it
Fig. 1
a diagram of a thick matter pump with an S-shaped swivel tube;
2a to c
two variants of a thick matter pump according to FIG. 1 with cleaning cartridge in a rear view and a partial plan view;
Fig. 3
a diagram of a thick matter pump with a C-shaped swivel tube;
Fig. 4a
a side view of the thick matter pump of Figure 3 in a partially sectioned representation.
4b and c
a section through the cleaning cartridge along the section line AA of Figure 4a with different filling.
Fig. 5
4a with a cleaning cartridge flanged to a cleaning opening of the swivel tube;
Fig. 6a
a representation corresponding to Figure 5 with flanged on the swivel tube transport tube and with delivery cylinder side limit slides.
Fig. 6b
an end view of the limit slide according to Fig. 6a.

Die in der Zeichnung dargestellten Zweizylinder-Dickstoffpumpen sind für den Einsatz in stationären und fahrbaren Betonpumpen bestimmt. Sie bestehen im wesentlichen aus zwei Förderzylindern 10 mit hydraulisch im Gegentakt angetriebenen Förderkolben 12, einem Materialaufgabebehälter 14 und einem mit einem Schwenkrohr 16 in den Materialaufgabebehälter 14 eingreifenden, mit einem Umsteuermechanismus 18 betätigbaren Schiebervorrichtung 20. Die Förderzylinder 10 sind im unteren Bereich über Öffnungen 22 an die Rückwand 24 des Materialaufgabebehälters 14 angeschlossen, wobei die Öffnungen 22 auf der Innenseite des Materialaufgabebehälters 14 durch eine brillenförmige Verschleißplatte 26 begrenzt sind. Das Schwenkrohr 16 liegt mit seinem einen, einen Verschleißring 28 tragenden Ende gegen die Verschleißplatte 26 an und wird durch den Umsteuermechanismus 18 in Abhängigkeit von der Bewegungsrichtung der Förderkolben 12 in den Förderzylindern 10 vor die eine oder andere Öffnung 22 geschwenkt. Auf diese Weise wird bei in Richtung des Pfeils 30 zurückbewegtem Förderkolben 12 Material aus dem Materialaufgabebehälter 14 durch die Öffnung 22 in Richtung des Pfeils 32 in den betreffenden Förderzylinder 10 angesaugt, während über den anderen Förderkolben 12 Material in Richtung der Pfeile 34,36,38 durch das Schwenkrohr 16 hindurch in ein außerhalb des Materialaufgabebehälters 14 befindliches Förderrohr 42 transportiert wird. Das Förderrohr 42 kann an eine nicht dargestellte Förderleitung eines Betonverteilermasts angeschlossen werden.The two-cylinder slurry pumps shown in the drawing are for use in stationary and mobile concrete pumps determined. They essentially exist from two delivery cylinders 10 with hydraulic in Push-pull driven delivery piston 12, a material feed container 14 and one with a swivel tube 16 engaging in the material feed container 14, with a reversing mechanism 18 actuable slide device 20. The feed cylinder 10 are in the lower area via openings 22 to the rear wall 24 of the material feed container 14 connected, the openings 22 on the inside of the material feed container 14 through an eyeglass-shaped wear plate 26 are limited. The swivel tube 16 lies with its one a wear ring 28 bearing end against the Wear plate 26 and is by the reversing mechanism 18 depending on the direction of movement the delivery piston 12 in the delivery cylinders 10 in front of the one or the other opening 22 is pivoted. In this way is when the delivery piston is moved back in the direction of arrow 30 12 Material from the material feed container 14 through the opening 22 in the direction of arrow 32 in the relevant feed cylinder 10 sucked in while over the other delivery piston 12 material in the direction arrows 34, 36, 38 through the swivel tube 16 into an outside of the material feed container 14 Delivery pipe 42 is transported. The conveyor pipe 42 can on a delivery line, not shown of a concrete placing boom.

Die in Fig. 1 und 3 gezeigten Ausführungsbeispiele unterscheiden sich vor allem in der Form des Schwenkrohrs 16. Bei dem Ausführungsbeispiel nach Fig. 1 ist das Schwenkrohr im wesentlichen S-förmig ausgebildet. Es ist an seinem den Förderzylindern gegenüberliegenden Ende über eine behälterfeste, zu seiner Schwenkachse koaxiale Rohrdrehverbindung 43 mit dem Förderrohr 42 verbunden, und greift auf der anderen Seite mit einer als Antriebswelle ausgebildeten Achswelle 45 durch ein Drehlager 47 des Materialaufgabebehälters 14 hindurch. Der nach außen überstehende Wellenstumpf der Achswelle 45 ist drehfest mit einem Umsteuerhebel 46 des Umsteuermechanismus 18 verbunden, der an seinem nach oben weisenden Ende zwei nach entgegengesetzten Seiten weisende, als Kugelpfannen ausgebildete Lagerstellen 48 für den Anschluß je eines kolbenseitigen Kugelkopfes 50 der beiden Antriebszylinder 52 des Umsteuermechanismus 18 aufweist. Auf der Zylinderseite sind die Antriebszylinder 52 mit einem weiteren Kugelkopf 54 in je einer förderzylinderfesten, als Kugelpfanne ausgebildeten Lagerstelle 56 gelagert.The exemplary embodiments shown in FIGS. 1 and 3 differ mainly in the shape of the swivel tube 16. In the exemplary embodiment according to FIG. 1, this is Swivel tube is essentially S-shaped. It is on its opposite the delivery cylinders End over a container-fixed, to its swivel axis coaxial rotary pipe connection 43 with the delivery pipe 42 connected, and engages on the other side with one designed as a drive shaft axle shaft 45 by a Pivot bearing 47 of the material feed container 14 therethrough. The stub of the axle shaft projecting outwards 45 is rotationally fixed with a reversing lever 46 of the reversing mechanism 18 connected up at his facing end two facing opposite sides, bearings 48 designed as ball sockets for the connection of a piston-side ball head 50 of the two drive cylinders 52 of the reversing mechanism 18 has. The drive cylinders are on the cylinder side 52 with a further ball head 54 in one Supporting cylinder-fixed bearing designed as a ball socket 56 stored.

Im Unterschied dazu ist bei dem in Fig. 3 gezeigten Ausführungsbeispiel ein C-förmiges Schwenkrohr 16 vorgesehen, das von oben her in den Materialaufgabebehälter 14 eingreift. Das Schwenkrohr 16 ist über einen Flansch 40 mit dem als Verlängerungsrohr ausgebildeten Förderrohr 42 verbunden, das seinerseits über eine nicht dargestellte Rohrdrehverbindung an eine Förderleitung eines Betonverteilermasts angeschlossen ist. Der Flansch 40 ist mittels zweier Spannschrauben 44 mit dem Umsteuerhebel 46 des Umsteuermechanismus 18 lösbar verbunden, der an seinem unteren Ende zwei nach entgegengesetzten Seiten weisende, als Kugelpfannen ausgebildete Lagerstellen 48 für den Anschluß je eines kolbenseitigen Kugelkopfes 50 der beiden Antriebszylinder 52 des Umsteuermechanismus 18 aufweist. Auf der Zylinderseite sind die Antriebszylinder 52 mit einem weiteren Kugelkopf 54 in je einer förderzylinderfesten, als Kugelpfanne ausgebildeten Lagerstelle 56 gelagert. Die Antriebszylinder 52 sind einseitig mit Drucköl beaufschlagbar und enthalten einen den Kugelkopf 50 tragenden Plungerkolben 60.In contrast, the one shown in Fig. 3 Embodiment provided a C-shaped pivot tube 16, that from above into the material feed container 14 engages. The swivel tube 16 is over a Flange 40 with the extension tube Conveyor tube 42 connected, which in turn via a Pipe rotary connection, not shown, to a delivery line a concrete placing boom is connected. The flange 40 is connected by means of two clamping screws 44 the reversing lever 46 of the reversing mechanism 18 releasably connected, the opposite at its lower end two Side-facing ball pans Bearings 48 for the connection of a piston side Ball head 50 of the two drive cylinders 52 of the reversing mechanism 18. On the cylinder side are the drive cylinders 52 with another Ball head 54 in a conveyor cylinder fixed, as Ball socket trained bearing 56 stored. The Drive cylinders 52 can be pressurized with pressure oil on one side and contain a ball head 50 Plunger 60.

Am Ende eines Fördervorgangs müssen die Rohrleitungen der Dickstoffpumpe und der Materialaufgabebehälter entleert und gereinigt werden. Zu diesem Zweck sind im Bereich der Rohrwandungen des Schwenkrohrs 16 (Fig. 3) und/oder des Förderrohrs 42 Reinigungsöffnungen 80 vorgesehen, die mit einem Deckel 82 und einem Kupplungsorgan 84 verschließbar sind.At the end of a conveying process, the pipelines the thick matter pump and the material feed container are emptied and be cleaned. For this purpose are in the area the tube walls of the swivel tube 16 (Fig. 3) and / or the delivery pipe 42, cleaning openings 80 are provided, the one with a cover 82 and a coupling member 84 are closable.

Wie aus den Fig. 2 und 4 bis 6 zu ersehen ist, kann an die Reinigungsöffnungen 80 wahlweise eine im wesentlichen zylindrische Reinigungspatrone 86 angeschlossen werden, die mit Reinigungskörpern 88,88' oder mit Flüssigkeitsbeuteln 88'' bestückt und über die Anschlüsse 90, 92 mit Druckwasser oder Preßluft beaufschlagt werden kann. Um die Reinigungskörper 88,88' und den Flüssigkeitsbeutel 88'' mit dem Druckwasser oder der Preßluft durch das Förderrohr 42 und die anschließende Förderleitung unter Mitnahme des darin befindlichen Betons hindurchtransportieren zu können, ist zusätzlich auf der Seite der Förderzylinder ein Absperrorgan vorgesehen, das im Falle der Fig. 2a, b und c sowie 4a als Sperrschieber 94,96 und im Falle der Fig. 5 als an der Innenfläche des Schwenkrohrs 16 anpreßbarer aufblasbarer Ballon 98 ausgebildet ist.As can be seen from FIGS. 2 and 4 to 6, can the cleaning ports 80 optionally one essentially cylindrical cleaning cartridge 86 connected with cleaning bodies 88,88 'or with liquid bags 88 '' equipped and via the connections 90, 92 with pressurized water or compressed air can. Around the cleaning body 88, 88 'and the liquid bag 88 '' with pressurized water or compressed air through the delivery pipe 42 and the subsequent delivery line taking the concrete inside To be able to transport through is also on a shut-off device is provided on the side of the delivery cylinder, that in the case of FIGS. 2a, b and c and 4a as Gate valve 94.96 and in the case of FIG. 5 as at the Inner surface of the swivel tube 16 compressible inflatable Balloon 98 is formed.

Der Sperrschieber 94 nach Fig. 2a bis c befindet sich im Bereich der Rohrdrehverbindung 43, und ist dort in Richtung des Doppelpfeils 100 vertikal verschiebbar angeordnet. Die Reinigungsöffnung 80 für den Anschluß der Reinigungspatrone 86 befindet sich in diesem Falle an einem als Klapprohr ausgebildeten Förderrohrstück 42, das nach Lösen des Schnellverschlusses 102 um das Gelenk 104 zu Reinigungszwecken unter Freigabe der Rohrdrehverbindung 43 verschwenkbar ist. Die Reinigungspatrone 86 weist bei dem Ausführungsbeispiel nach Fig. 2a einen Sperrschieber 106 auf, der während des Fördervorgangs geschlossen ist und beim Reinigungsvorgang in seine Offenstellung gebracht werden kann.The locking slide 94 according to FIGS. 2a to c is located in the area of the pipe joint 43, and is in there Direction of the double arrow 100 is vertically displaceable arranged. The cleaning opening 80 for the connection the cleaning cartridge 86 is in this case on a conveyor tube piece designed as a folding tube 42, which after loosening the quick-release fastener 102 Joint 104 for cleaning purposes with the release of Pipe rotary connection 43 is pivotable. The cleaning cartridge 86 demonstrates in the exemplary embodiment Fig. 2a on a gate valve 106, which during the Conveying process is closed and during the cleaning process can be brought into its open position.

Alternativ oder in Kombination dazu ist bei dem Ausführungsbeispiel nach Fig. 2b die Reinigungspatrone 86 um das Gelenk 108 gegenüber der Reinigungsöffnung 80 verschwenkbar, nachdem zuvor das Kupplungsorgan 84 entfernt worden ist. Auf diese Weise wird mit wenigen Handgriffen die Öffnung der Reinigungspatrone 86 zum Befüllen mit den Reinigungskörpern 88 freigegeben.Alternatively or in combination with the embodiment 2b, the cleaning cartridge 86 the joint 108 can be pivoted relative to the cleaning opening 80, after previously removing the coupling member 84 has been. This way, with a few Handles the opening of the cleaning cartridge 86 to Filling with the cleaning bodies 88 released.

Bei dem in Fig. 4a bis c gezeigten Ausführungsbeispiel ist ein aus zwei Reinigungspatronen 86 und einer Schieberplatte 110 bestehender Patronenschieber 112 vorgesehen, der an die Reinigungsöffnung 80 des Förderrohrs 42 angeflanscht ist. Durch seitliches Verschieben der Reinigungspatronen 86 über die Grundplatte 112 hinaus können die Reinigungskörper 88, 88',88" von unten her in die Reinigungspatronen 86 eingeführt werden.In the embodiment shown in Fig. 4a to c is one of two cleaning cartridges 86 and a slide plate 110 existing cartridge valve 112 provided, the to the cleaning opening 80 of the conveyor pipe 42nd is flanged. By moving the cleaning cartridges to the side 86 beyond the base plate 112 the cleaning body 88, 88 ', 88 "from below in the cleaning cartridges 86 are inserted.

Beim Reinigungsvorgang wird zunächst der Sperrschieber 96 im Förderrohr 42 geschlossen. Sodann wird eine der Reinigungspatronen 86 über die Reinigungsöffnung 80 geschoben und kurzzeitig am Anschluß 90 mit Wasser beaufschlagt, so daß zwei der drei Reinigungskörper 88 in die Rohrleitung eingepreßt werden. Anschließend wird der Wasseranschluß geschlossen und der dritte Reinigungskörper 88 mit Preßluft über den Anschluß 92 in die Förderleitung gedrückt. Am Ende der Förderleitung ist ein nicht dargestellter Auslaufbock montiert, damit der Beton und die Reinigungskörper gefahrlos aus der Förderleitung austreten können.During the cleaning process, the gate valve is activated first 96 closed in the conveyor tube 42. Then one of the Cleaning cartridges 86 through the cleaning opening 80 pushed and briefly exposed to water at connection 90, so that two of the three cleaning bodies 88 in the pipeline is pressed in. Then will the water connection is closed and the third cleaning body 88 with compressed air via port 92 in the Delivery line pressed. At the end of the delivery line mounted a discharge stand, not shown, so that the Concrete and the cleaning elements can be safely removed from the delivery line can exit.

Wie aus Fig. 4c zu ersehen ist, können die Reinigungspatronen 86 auch als Anpumphilfe verwendet werden, indem ein mit einem Schmier- oder Gleitmittel gefüllter Beutel 88'' eingesetzt, mit Wasser in die Förderleitung gepreßt und anschließend mit dem Beton zum Ausgang der Förderleitung gepumpt wird. Dabei öffnet sich der Beutel 88'' und verteilt seinen Inhalt auf der Innenfläche der Förderleitung.As can be seen from Fig. 4c, the cleaning cartridges 86 can also be used as a pumping aid by one filled with a lubricant or lubricant Bag 88 '' inserted with water into the delivery line pressed and then with the concrete to the exit of the Delivery line is pumped. The bag opens 88 '' and distributes its contents on the inner surface the delivery line.

Bei dem in Fig. 5 gezeigten Ausführungsbeispiel ist die Reinigungspatrone 86 an die Reinigungsöffnung 80 des C-förmigen Schwenkrohrs 16 angeschlossen. Um beim Reinigungsvorgang den Rückweg zum Materialaufgabebehälter 14 abzusperren, ist in das Innere des Schwenkrohrs 16 ein aufblasbarer Ballon 98 eingesetzt, der unverlierbar an einem Band 116 mit der Reinigungspatrone 86 verbunden ist und sich zum förderzylinderseitigen Ende hin in einem eigens hierfür vorgesehenen Sitz 118 abstützt. Beim Reinigungsvorgang werden zunächst die beiden vorderen Reinigungskörper 88 mit Druckwasser über den Anschluß 90 in Richtung der Pfeile 120 in das Förderrohr 42 gedrückt, um anschließend nach Abstellen der Wasserzufuhr zusammen mit dem dritten Reinigungskörper 88 und der davor befindlichen Betonsäule zum Auslaß der Förderleitung gedrückt zu werden.In the embodiment shown in FIG Cleaning cartridge 86 to the cleaning opening 80 of the C-shaped Swivel tube 16 connected. To during the cleaning process the way back to the material feed container 14 shut off is in the interior of the pivot tube 16 inflatable balloon 98 used, which is captive a band 116 connected to the cleaning cartridge 86 and is in one towards the end on the delivery cylinder side supports seat 118 provided specifically for this purpose. At the The first two cleaning processes are first Cleaning body 88 with pressurized water via the connection 90 pressed in the direction of the arrows 120 into the conveyor tube 42, to then switch off the water supply together with the third cleaning body 88 and the concrete column in front of it to the outlet of the delivery line to be pressed.

Bei allen Ausführungsbeispielen können die Reinigungskörper zum nochmaligen Auswischen der Förderleitung vom Förderleitungsende durch die auf Saugbetrieb umgeschaltete Förderpumpe 10,12 bei geöffnetem Absperrorgan 94, 96,98 in den Materialaufgabebehälter 14 zurückgefördert werden. Auf diese Weise wird auch das zum Materialaufgabebehälter führende letzte Förderrohrstück 42 samt Schwenkrohr 16 gereinigt.In all embodiments, the cleaning body for wiping the conveyor line again End of the delivery line through the switch to suction mode Feed pump 10, 12 with shut-off element 94 open, 96.98 conveyed back into the material feed container 14 become. In this way, this also becomes the material feed container leading last conveyor pipe section 42 velvet Swivel tube 16 cleaned.

An der Unterseite des Materialaufgabebehälters 14 befindet sich eine mit einem Schwenkdeckel 70 verschließbare Öffnung 72, über die der Materialaufgabebehälter 14 vollständig entleert werden kann.Located on the underside of the material feed container 14 a closable with a swivel lid 70 Opening 72 through which the material feed container 14 can be completely emptied.

Bei dem in Fig. 6a und b gezeigten Ausführungsbeispiel kann der Materialaufgabebehälter 14 auch über die Betonpumpe entleert werden. Dazu wird die Reinigungsöffnung 80 am Schwenkrohr 16 mit einem Druckschlauch 122 bestückt und der Weg zum Förderrohr 42 durch den Ballon 98 versperrt. Wenn zusätzlich über die im Bereich der brillenförmigen Verschleißplatte 26 angeordneten, von oben nach unten verschiebbaren Schieber 124 dafür gesorgt wird, daß beim Ansaugen nur der untere Bereich der Förderzylinderöffnungen 22 zum Materialaufgabebehälter 14 hin offen ist, kann der Materialaufgabebehälter mit diesen Maßnahmen nahezu vollständig entleert werden. Der dann noch verbleibende Restbeton kann über die Öffnung 72 entfernt werden.In the embodiment shown in Fig. 6a and b can the material feed container 14 via the concrete pump be emptied. This is the cleaning opening 80 on the swivel tube 16 with a pressure hose 122 equipped and the way to the conveyor tube 42 through the balloon 98 blocked. If in addition about that in the area of glasses-shaped wear plate 26 arranged from Slider 124 displaceable up and down ensures this is that only the lower area when sucking the feed cylinder openings 22 to the material feed container 14 is open, the material feed container almost completely emptied with these measures become. The remaining concrete left over can then opening 72 are removed.

Zusammenfassend ist folgendes festzustellen: Die Erfindung bezieht sich auf eine Dickstoffpumpe, insbesondere eine Betonpumpe, mit einem Materialaufgabebehälter 14, zwei mit ihren stirnseitigen Öffnungen 22 in das Innere des Materialaufgabebehälters 14 mündenden Förderzylindern 10, einem in den Materialaufgabebehälter 14 eingreifenden, mit seinem einen Ende taktweise abwechselnd mit den stirnseitigen Öffnungen 22 der Förderzylinder kommunizierenden und mit seinem anderen Ende an ein Förderrohr 42 angeschlossenen Schwenkrohr 16 und mit einer in der Nähe des schwenkrohrseitigen Endes des Förderrohrs 42 oder in einem außerhalb des Materialaufgabebehälters angeordneten Abschnitt des Schwenkrohrs 16 in der betreffenden Rohrwand angeordneten verschließbaren Reinigungsöffnung 80. Erfindungsgemäß ist an die Reinigungsöffnung 80 eine Reinigungspatrone 86 anschließbar, die einen Preßluft- und/oder Druckwasseranschluß 90,92 aufweist, während das Förderrohr 42 und/oder das Schwenkrohr 16 förderzylinderseitig mittels eines Absperrorgans 94,96,98 verschließbar ist.In summary, the following can be stated: The invention refers to a thick matter pump, in particular a concrete pump with a material feed container 14, two with their end openings 22 into the interior of the material feed container 14 opening conveying cylinders 10, which engages in the material feed container 14, with one end alternating in cycles with the front openings 22 of the feed cylinder communicating and with its other end at one Conveyor tube 42 connected swivel tube 16 and with one near the swivel tube end of the Conveyor tube 42 or in an outside of the material feed container arranged section of the swivel tube 16 arranged closable in the relevant pipe wall Cleaning opening 80. According to the invention a cleaning cartridge 86 to the cleaning opening 80 connectable, the a compressed air and / or pressurized water connection 90.92, while the conveyor pipe 42nd and / or the swivel tube 16 on the delivery cylinder side by means of a shut-off device 94, 96, 98 can be closed.

Claims (12)

  1. A thick matter pump with a material feed container (14), having two hydraulically driven conveyor cylinders (10) ending with their front-side openings (22) opening into the inside of the material feed container (14), a swivelling pipe (16) extending into the material feed container (14) communicating with one end alternately in pulses with the front-side openings (22) in the conveyor cylinders (10), and being connected with other end to a conveyor pipe (42), and with a closable cleaning aperture (80) arranged in the appropriate pipe wall in the vicinity of the end of the conveyor pipe (42) on the side of the swivelling pipe or in a section of the swivelling pipe (16) arranged outside of the material feed container (14), characterized in that a cleaning cartridge (86) is connectable from the outside to the pipe wall, which cleaning cartridge is open on one side toward the cleaning aperture and has at least one compressed air and/or pressure water connection (90, 92), and that the conveyor pipe (42) and/or the swivelling pipe (16) is adapted to be closed off on the side of the conveyor cylinder by means of a blocking member (94, 96, 98).
  2. The thick matter pump according to Claim 1, characterized in that the cleaning cartridge (86) can be blocked off toward the cleaning aperture (80) by means of a blocking member, in particular a blocking slide (106, 10).
  3. The thick matter pump according to Claim 1 or 2, characterized in that the cleaning cartridge (86) is connected by a hinge in the area of the cleaning aperture (80) to the conveyor pipe (42) or to the swivelling pipe (16) in such a manner that the cleaning cartridge can be swung away from the cleaning aperture (80) freeing its frontal opening.
  4. The thick matter pump according to Claim 2, characterized in that at least one cleaning cartridge (86) and the blocking slide (106) are rigidly connected 5 to one another and can be moved selectively against the cleaning aperture (80).
  5. The thick matter pump according to one of the Claims 1 to 4, characterized in that a transporting pipe (122), which is open toward the cleaning aperture (80), can be connected from the outside to the pipe wall, and that the conveyor pipe (42) or the swivelling pipe (16) can be closed off toward the open conveyor pipe end by means of a blocking member (98).
  6. The thick matter pump according to Claim 5, characterized in that the front-side conveyor cylinder openings (22) ending in the material feed container (14) can be at least partially covered or closed off against the entry of air from the material feed container (14) adjacent the material feed container base, preferably by means of a slide (124).
  7. The thick matter pump according to one of the Claims 1 to 6, characterized in that the blocking member is designed as a blocking slide (94, 96).
  8. The thick matter pump according to Claim 7, characterized in that the blocking slide (96) is arranged adjacent a connecting flange (40) on the side of the conveyor pipe outside of the material feed container (14).
  9. The thick matter pump according to one of the Claims 1 to 6, characterized in that the blocking member is designed as a sealing member (98), which is adapted to be pressed against the conveyor pipe or swivelling pipe wall inside of the pipe, and can be deformed preferably under the action of pressure.
  10. The thick matter pump according to Claim 9, characterized in that the sealing member (98) is adapted to be guided from the cleaning cartridge into the conveyor or swivelling pipe and can be positioned in same preferably by means of a flexible band or chainlike holding member (116).
  11. The thick matter pump according to Claim 9 or 10, characterized in that the sealing member (98) is designed as a balloon or a ball, which can be expanded under the action of a pressure medium, preferably by compressed air or pressurized liquid, and is adapted to be pressed against the inside surface of the pipe.
  12. The thick matter pump according to one of the Claims 9 to 11, characterized by a seat or support member (118) for the sealing member (98), which member extends into the inside of the pipe, preferably from the cleaning aperture.
EP95917350A 1994-04-28 1995-04-21 Thick matter pump Expired - Lifetime EP0757756B1 (en)

Priority Applications (2)

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EP97111499A EP0805273B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP97111498A EP0805272B1 (en) 1994-04-28 1995-04-21 Thick matter pump

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4414845 1994-04-28
DE4414845 1994-04-28
PCT/EP1995/001516 WO1995030088A1 (en) 1994-04-28 1995-04-21 Thick matter pump

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EP0757756A1 EP0757756A1 (en) 1997-02-12
EP0757756B1 true EP0757756B1 (en) 1999-01-27

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EP95917350A Expired - Lifetime EP0757756B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP97111498A Expired - Lifetime EP0805272B1 (en) 1994-04-28 1995-04-21 Thick matter pump

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JP (1) JPH09512321A (en)
DE (4) DE59504991D1 (en)
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Also Published As

Publication number Publication date
DE59510099D1 (en) 2002-04-11
EP0805273B1 (en) 2002-03-06
EP0805272A2 (en) 1997-11-05
EP0805273A2 (en) 1997-11-05
DE59504991D1 (en) 1999-03-11
DE19514750A1 (en) 1995-11-02
EP0805273A3 (en) 1998-01-07
ES2128725T3 (en) 1999-05-16
EP0757756A1 (en) 1997-02-12
ES2171785T3 (en) 2002-09-16
EP0805272A3 (en) 1998-01-07
ES2171784T3 (en) 2002-09-16
DE59510098D1 (en) 2002-04-11
EP0805272B1 (en) 2002-03-06
JPH09512321A (en) 1997-12-09
US5957675A (en) 1999-09-28
WO1995030088A1 (en) 1995-11-09

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