EP0757756A1 - Thick matter pump - Google Patents

Thick matter pump

Info

Publication number
EP0757756A1
EP0757756A1 EP95917350A EP95917350A EP0757756A1 EP 0757756 A1 EP0757756 A1 EP 0757756A1 EP 95917350 A EP95917350 A EP 95917350A EP 95917350 A EP95917350 A EP 95917350A EP 0757756 A1 EP0757756 A1 EP 0757756A1
Authority
EP
European Patent Office
Prior art keywords
pipe
material feed
feed container
cleaning
opening
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.)
Granted
Application number
EP95917350A
Other languages
German (de)
French (fr)
Other versions
EP0757756B1 (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
Putzmeister Werk Maschinenfabrik GmbH
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, Putzmeister Werk Maschinenfabrik GmbH filed Critical Putzmeister AG
Priority to EP97111498A priority Critical patent/EP0805272B1/en
Priority to EP97111499A priority patent/EP0805273B1/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

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning 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
    • B08B9/055—Cleaning 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0233—Piston 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
    • F04B7/0258—Piston 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 hydraulically driven conveying cylinders opening with their front openings into the interior of the material feed container, an engaging in the material feed container, with one end alternating in cycles with the end openings of the feed cylinders and communicating with its other End connected to a conveyor tube pivot tube.
  • Thick matter pumps of this type are used above all for conveying concrete and more or less viscous sludge, which can freeze up after a long period of inactivity. Therefore, the pipes of the thick matter pump and the material feed container must be emptied and cleaned at the end of a conveying process.
  • the delivery line which is usually attached to a distributor in concrete pumps, can either be sucked back by the concrete contained in the material feed container through the thick matter pump itself or under pressure in the opposite direction with the help of a pressure medium pressed into the delivery line. such as compressed air or water.
  • the pipelines are wiped out by means of elastomeric sponge balls or cleaning bodies, which are either sucked over the free end of the conveying pipe to the material feed container or into the opposite direction using suitable pipeline fittings.
  • the invention is based on the object of improving the known concrete pumps of the type specified at the outset in such a way that the delivery pipes and the material feed container can be emptied and cleaned with simple handles.
  • the cleaning openings which are present in the tube wall of the delivery tube and / or the swivel tube in addition to injecting sponge balls on the one hand and / or for emptying the material feed container on the one hand and to the in the Closable cleaning opening located on the pipe wall of the delivery pipe and / or of the swivel pipe a cleaning cartridge that is open on one side towards the cleaning opening and has at least one compressed air and / or pressurized water connection, the delivery pipe and / or the swivel pipe on the delivery cylinder side being closable by means of a shut-off device.
  • the cleaning cartridge can advantageously be shut off by means of a locking member, in particular a locking slide, towards the cleaning opening.
  • the cleaning cartridge is expediently articulated in the region of the cleaning opening on the delivery pipe or swivel pipe so that it can be swiveled away from the cleaning opening, preferably with the locking slide closed, with the opening of its front opening.
  • the cleaning cartridge and the locking slide are rigidly connected to one another and can optionally be moved against the cleaning opening.
  • the cleaning slide can also be connected to two cleaning cartridges, which can optionally be fitted with sponge balls, cleaning pigs or with liquid-filled bags.
  • a transport tube can also be optionally connected to the cleaning opening, via which the material feed container can be emptied to a small residual amount with the aid of the delivery cylinders.
  • a shut-off device closing the delivery pipe or the swivel pipe to the free end of the delivery pipe is additionally provided.
  • the end-side delivery cylinder openings opening into the material feed container can be at least partially covered against air access from the material feed container to near the bottom of the container, preferably by means of a slide or are lockable.
  • the shut-off device can, for example, be designed as a shut-off valve, which is expediently arranged in the region of a connecting flange on the delivery pipe side outside the material feed container.
  • the shut-off element can also be designed as a sealing body that can be pressed into the inside of the pipe against the wall of the delivery pipe or swivel pipe, preferably deformable under the action of pressure, which can be inserted into the delivery or swivel pipe from the cleaning cartridge and in this preferably by means of a slack, belt or chain-like holding member is positionable.
  • a seat or support member for the sealing body which engages in the interior of the tube, preferably from the cleaning opening, can be provided independently of or in addition to the holding member become.
  • a preferred embodiment of the invention provides that the sealing body as under the action of a pressure medium, preferably pressure Air or hydraulic fluid can be expanded and a ball or balloon can be pressed against the inner surface of the tube.
  • FIG. 1 shows a diagrammatic representation of a thick matter pump with an S-shaped swivel tube
  • FIG. 2a to c show two embodiment variants of a thick matter pump corresponding to FIG. 1 with cleaning cartridge in a rear view and a partial plan view;
  • FIG. 3 shows a diagrammatic representation of a thick matter pump with a C-shaped swivel tube
  • FIG. 4a shows a side view of the thick matter pump according to FIG. 3 in a partially sectioned illustration
  • FIG. 4b and c show a section through the cleaning cartridge along the section line A-A of FIG. 4a with different filling
  • FIG. 5 shows a representation corresponding to FIG. 4a with a cleaning cartridge flanged to a cleaning opening of the swivel tube;
  • 6a is an illustration corresponding to FIG. 5 with on Swivel tube flanged transport tube and with limit slides on the delivery cylinder side;
  • Fig. 6b is an end view of the limit slide according to Fig. 6a.
  • the two-cylinder thick matter pumps shown in the drawing are intended for use in stationary and mobile concrete pumps. They essentially consist of two delivery cylinders 10 with delivery pistons 12 driven hydraulically in push-pull, a material feed container 14 and a slide device 20 which engages with a swivel tube 16 in the material feed container 14 and can be actuated by a reversing mechanism 18 lower region connected via openings 22 to the rear wall 24 of the material feed container 14, the openings 22 on the inside of the material feed container 14 being delimited by an eyeglass-shaped wear plate 26.
  • the swivel tube 16 bears with its end bearing a wear ring 28 against the wear plate 26 and is pivoted by the reversing mechanism 18 depending on the direction of movement of the delivery pistons 12 in the delivery cylinders 10 in front of one or the other opening 22.
  • the delivery pipe 42 can be connected to a delivery line (not shown) of a concrete placing boom.
  • the exemplary embodiments shown in FIGS. 1 and 3 differ primarily in the shape of the swivel tube 16.
  • the swivel tube is essentially S-shaped. It is connected at its end opposite the feed cylinders to the feed pipe 42 via a tubular pipe swivel 43, which is fixed to the container and coaxial with its pivot axis, and on the other hand it engages with an axle shaft 45 designed as a drive shaft through a rotary bearing 47 of the material feed container 14.
  • the outwardly projecting stub shaft of the axle shaft 45 is connected in a rotationally fixed manner to a reversing lever 46 of the reversing mechanism 18 which, at its upward-facing end, has two bearing points 48, which are designed as ball sockets, for the connection of a spherical head 50 each on the piston side has two drive cylinders 52 of the reversing mechanism 18.
  • the drive cylinders 52 are supported with a further ball head 54 in a bearing point 56 which is fixed to the delivery cylinder and is designed as a ball socket.
  • a C-shaped swivel tube 16 is provided, which is inserted into the material feed container from above. ter 14 engages.
  • the swivel tube 16 is connected via a flange 40 to the delivery tube 42, which is designed as an extension tube and which in turn is connected to a delivery line of a concrete placing boom via an unillustrated tube rotary connection.
  • the flange 40 is detachably connected by means of two clamping screws 44 to the reversing lever 46 of the reversing mechanism 18, which has at its lower end two bearing points 48, which are designed as ball sockets, on the opposite side, for the connection of a piston head 50 of the two on each side Has drive cylinder 52 of the reversing mechanism 18.
  • the drive cylinders 52 are supported with a further ball head 54 in a bearing point 56, which is fixed to the delivery cylinder and is designed as a ball socket.
  • the drive cylinders 52 can be pressurized with pressure oil on one side and contain a plunger 60 carrying the ball head 50.
  • cleaning openings 80 are provided in the area of the tube walls of the swivel tube 16 (FIG. 3) and / or the delivery tube 42, which can be closed with a cover 82 and a coupling member 84.
  • an essentially cylindrical cleaning cartridge 86 can optionally be connected to the cleaning openings 80, said cleaning cartridge 86 being equipped with cleaning bodies 88, 88 'or with rivers.
  • liquid bags 88 '' and pressurized water or compressed air can be applied to them via the connections 90, 92.
  • an additional is on the side of the conveying cylinder Shut-off device provided, which in the case of FIGS. 2a, b and c and 4a is designed as a blocking slide 94, 96 and in the case of FIG. 5 as an inflatable balloon 98 which can be pressed onto the inner surface of the swivel tube 16.
  • the locking slide 94 according to FIGS. 2a to c is located in the area of the pipe rotary connection 43, and is arranged there to be vertically displaceable in the direction of the double arrow 100.
  • the cleaning opening 80 for the connection of the cleaning cartridge 86 is located on a conveyor tube piece 42 designed as a folding tube, which can be pivoted around the joint 104 for loosening the quick-release fastener 102 for cleaning purposes while releasing the rotating tube connection 43.
  • the cleaning cartridge 86 has a locking slide 106 which is closed during the conveying process and can be brought into its open position during the cleaning process.
  • the cleaning cartridge 86 can be pivoted about the joint 108 relative to the cleaning opening 80 after the coupling element 84 has been removed beforehand. has been removed. In this way, the opening of the cleaning cartridge 86 for filling with the cleaning bodies 88 is released in a few simple steps.
  • a cartridge slide 112 consisting of two cleaning cartridges 86 and a slide plate 110 is provided, which is flanged onto the cleaning opening 80 of the delivery pipe 42.
  • the cleaning bodies 88, 88 ', 88' ' can be inserted into the cleaning cartridges 86 from below.
  • the blocking slide 96 in the delivery pipe 42 is first closed. Then one of the cleaning cartridges 86 is pushed over the cleaning opening 80 and briefly charged with water at the connection 90, so that two of the three cleaning bodies 88 are pressed into the pipeline. Then the water connection is closed and the third cleaning body 88 is pressed with compressed air via the connection 92 into the delivery line.
  • a discharge stand (not shown) is mounted at the end of the delivery line so that the concrete and the cleaning bodies can safely exit the delivery line.
  • the cleaning cartridges 86 can also be used as a pumping aid by inserting a bag 88 ′′ filled with a lubricant or lubricant, pressing it into the delivery line with water and then using the concrete to Output of Delivery line is pumped.
  • the bag 88 ′′ opens and distributes its contents on the inner surface of the delivery line.
  • the cleaning cartridge 86 is connected to the cleaning opening 80 of the C-shaped swivel tube 16.
  • an inflatable balloon 98 is inserted into the interior of the swivel tube 16, which is captively connected to the cleaning cartridge 86 on a belt 116 and is provided in a specially provided for this purpose at the end on the delivery cylinder side Seat 118 supports.
  • the two front cleaning bodies 88 are first pressed with pressurized water via the connection 90 in the direction of the arrows 120 into the delivery pipe 42, and then, after the water supply has been shut off, together with the third cleaning body 88 and the concrete column located in front of it, for the outlet of the delivery line to be pressed.
  • the cleaning bodies can be conveyed back into the material feed container 14 from the end of the conveying line by the conveying pump 10, 12 switched to suction operation when the shut-off element 94, 96, 98 is open. In this way, the last conveyor pipe section 42 including the swivel pipe 16 leading to the material feed container is also cleaned.
  • the material feed container 14 can also be emptied via the concrete pump.
  • the cleaning opening 80 on the swivel tube 16 is equipped with a pressure hose 122 and the path to the delivery tube 42 is blocked by the balloon 98.
  • the slide 124 arranged in the area of the spectacle-shaped wear plate 26 and displaceable from top to bottom ensures that only the lower area of the feed cylinder openings 22 is open to the material feed container 14 during suction, the material feed container can also be used these measures are almost completely emptied. The remaining concrete then remaining can be removed via the opening 72.
  • the invention relates to a thick matter pump, in particular a concrete pump, with a material feed container 14, two conveying cylinders 10 opening with their front openings 22 into the interior of the material feed container 14, and one which engages in the material feed container 14 , with one end intermittently alternatingly communicating with the front openings 22 of the delivery cylinders and with its other end connected to a delivery pipe 42 and with a swivel pipe near the end of the delivery pipe 42 or outside of the material section of the swivel tube 16 arranged in the dispensing container and arranged in the relevant tube wall, closable cleaning opening 80 the swivel tube 16 can be closed on the delivery cylinder side by means of a shut-off element 94, 96, 98.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The invention relates to a thick matter pump, especially a concrete pump, with a material feed container (14), two conveyor cylinders (10) opening at the front (22) into the inside of the material feed container (14), a swivelling pipe (16), one end of which alternately in pulses communicates with the frontal apertures (22) in the conveying cylinder and the other end being connected to a conveyor pipe (42) and with a closable cleaning aperture (80) in the appropriate pipe wall arranged near the end of the conveyor pipe (42) or in a section of the swivelling pipe (16) outside the material feed container. According to the invention, a cleaning cartridge (86) can be connected to the cleaning aperture (80) having a compressed air and/or pressurised water connection (90, 92) while the feed pipe (42) and/or the swivelling pipe (16) can be closed on the conveyor cylinder side by means of a blocking system (94, 96, 98).

Description

DickstoffpumpeSlurry pump
Beschreibungdescription
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 stirn¬ seitigen Öffnungen der Förderzylinder kommunizierenden und mit seinem anderen Ende an ein Förderrohr ange¬ schlossenen Schwenkrohr.The invention relates to a thick matter pump with a material feed container, two hydraulically driven conveying cylinders opening with their front openings into the interior of the material feed container, an engaging in the material feed container, with one end alternating in cycles with the end openings of the feed cylinders and communicating with its other End connected to a conveyor tube pivot tube.
Dickstoffpumpen dieser Art werden vor allem zum Fördern von Beton und von mehr oder weniger dickflüssigen Schlämmen eingesetzt, die bei längerem Stillstand er¬ starren 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 Ver- teilermaεt befestigt ist, kann entweder durch Zurück¬ saugen des in ihr enthaltenen Betons in den Material¬ aufgabebehälter durch die Dickstoffpumpe selbst oder unter Druck in umgekehrter Richtung mit Hilfe eines in die Förderleitung eingepreßten Druckmittels, wie Druck¬ luft oder Wasser, entleert werden. Das Auswischen der Rohrleitungen erfolgt mittels elastomerer Schwammkugeln oder Reinigungskörper, die entweder über das freie För¬ derrohrende zum Materialaufgabebehälter gesaugt oder über geeignete Rohrleitungsarmaturen in die entgegenge- setzte Richtung gedrückt werden. Weiter ist es bekannt, im Bereich des Schwenkrohrs verschließbare Reinigungs¬ öffnungen in der Rohrleitungswand vorzusehen, durch die hindurch zu Reinigungszwecken ein Zugriff in das Rohr¬ leitungsinnere möglich ist. Noch nicht befriedigend gelöst ist bisher das Problem der Entleerung unter Ver¬ wertung 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 used above all for conveying concrete and more or less viscous sludge, which can freeze up after a long period of inactivity. Therefore, the pipes of the thick matter pump and the material feed container must be emptied and cleaned at the end of a conveying process. The delivery line, which is usually attached to a distributor in concrete pumps, can either be sucked back by the concrete contained in the material feed container through the thick matter pump itself or under pressure in the opposite direction with the help of a pressure medium pressed into the delivery line. such as compressed air or water. The pipelines are wiped out by means of elastomeric sponge balls or cleaning bodies, which are either sucked over the free end of the conveying pipe to the material feed container or into the opposite direction using suitable pipeline fittings. set direction to be pushed. Furthermore, it is known to provide closable cleaning openings in the pipeline wall in the region of the swivel tube, through which access into the interior of the pipeline is possible for cleaning purposes. The problem of emptying using the residual concrete in the material feed container has not yet been satisfactorily solved. The handling of the sponge balls in the course of cleaning the pipes has so far left something to be desired.
Ausgehend hiervon liegt der Erfindung die Aufgabe zu¬ grunde, die bekannten Betonpumpen der eingangs angege¬ benen Art dahingehend zu verbessern, daß die Förderroh¬ re und der Materialaufgabebehälter mit einfachen Hand¬ griffen entleert und gereinigt werden können.Proceeding from this, the invention is based on the object of improving the known concrete pumps of the type specified at the outset in such a way that the delivery pipes and the material feed container can be emptied and cleaned with simple handles.
Zur Lösung dieser Aufgabe werden die in den Patentan¬ sprüchen 1, 6 und 8 angegebenen Merkmalskombinationen vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiter¬ bildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To achieve this object, the combinations of features specified in patent claims 1, 6 and 8 are proposed. Advantageous refinements and developments of the invention result from the dependent claims.
Zur Lösung dieser Aufgabe wird gemäß einer ersten Er¬ findungsvariante vorgeschlagen, die in der Rohrwand des Förderrohrs und/oder des Schwenkrohrs ohnehin vorhande¬ nen 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 Reinigungsöff- nung eine einseitig zur Reinigungsöffnung hin offene, mindestens einen Preßluft- und/oder Druckwasseranschluß aufweisende Reinigungspatrone anzuschließen, wobei das Förderrohr und/oder das Schwenkrohr förderzylindersei- tig mittels eines Absperrorgans verschließbar ist. Um im Betriebszustand einen Dickstoffzutritt zur Reini¬ gungspatrone zu vermeiden, ist die Reinigungspatrone vorteilhafterweise mittels eines Sperrorgans, insbeson¬ dere eines Sperrschiebers zur Reinigungsöffnung hin absperrbar. Zweckmäßig ist die Reinigungspatrone im Bereich der Reinigungsöffnung am Förderrohr oder Schwenkrohr so angelenkt, daß sie von der Reinigungs¬ öffnung vorzugsweise bei geschlossenem Sperrschieber unter Freigabe ihrer stirnseitigen Öffnung wegschwenk¬ bar ist. Das gleiche Ergebnis kann dadurch erzielt wer¬ den, daß die Reinigungspatrone und der Sperrschieber starr miteinander verbunden und wahlweise gegen die Reinigungsöffnung verschiebbar sind. Mit dem Sperr¬ schieber können auch zwei Reinigungspatronen verbunden sein, die wahlweise mit Schwammkugeln, Putzmolchen oder mit flüssigkeitsgefüllten Beuteln bestückt werden kön¬ nen.To solve this problem, according to a first variant of the invention, it is proposed to use the cleaning openings which are present in the tube wall of the delivery tube and / or the swivel tube in addition to injecting sponge balls on the one hand and / or for emptying the material feed container on the one hand and to the in the Closable cleaning opening located on the pipe wall of the delivery pipe and / or of the swivel pipe a cleaning cartridge that is open on one side towards the cleaning opening and has at least one compressed air and / or pressurized water connection, the delivery pipe and / or the swivel pipe on the delivery cylinder side being closable by means of a shut-off device. In order to prevent thick material from entering the cleaning cartridge in the operating state, the cleaning cartridge can advantageously be shut off by means of a locking member, in particular a locking slide, towards the cleaning opening. The cleaning cartridge is expediently articulated in the region of the cleaning opening on the delivery pipe or swivel pipe so that it can be swiveled away from the cleaning opening, preferably with the locking slide closed, with the opening of its front opening. The same result can be achieved in that the cleaning cartridge and the locking slide are rigidly connected to one another and can optionally be moved against the cleaning opening. The cleaning slide can also be connected to two cleaning cartridges, which can optionally be fitted with sponge balls, cleaning pigs or with liquid-filled bags.
Nach einer zweiten Erfindungsvariante kann an die Rei¬ nigungsöffnung wahlweise auch ein Transportrohr ange¬ schlossen werden, über welches der Materialaufgabebe¬ hälter mit Hilfe der Förderzylinder bis auf eine kleine Restmenge entleert werden kann. In diesem Falle ist zu¬ sätzlich ein das Förderrohr oder das Schwenkrohr zum freien Förderrohrende hin verschließendes Absperrorgan vorgesehen. Um den Materialaufgabebehälter nahezu vollständig ent¬ leeren zu können, wird gemäß einer bevorzugten oder alternativen Ausgestaltung der Erfindung vorgeschlagen, daß die in den Materialaufgabebehälter mündenden stirn¬ seitigen Förderzylinderöffnungen zumindest teilweise gegen Luftzutritt aus dem Materialaufgabebehälter bis in die Nähe des Behälterbodens vorzugsweise mittels eines Schiebers abdeckbar oder verschließbar sind.According to a second variant of the invention, a transport tube can also be optionally connected to the cleaning opening, via which the material feed container can be emptied to a small residual amount with the aid of the delivery cylinders. In this case, a shut-off device closing the delivery pipe or the swivel pipe to the free end of the delivery pipe is additionally provided. In order to be able to empty the material feed container almost completely, it is proposed according to a preferred or alternative embodiment of the invention that the end-side delivery cylinder openings opening into the material feed container can be at least partially covered against air access from the material feed container to near the bottom of the container, preferably by means of a slide or are lockable.
Das Absperrorgan kann beispielsweise als Absperrschie¬ ber ausgebildet sein, der zweckmäßig im Bereich eines förderrohrseitigen Anschlußflansches außerhalb des Ma¬ terialaufgabebehälters angeordnet ist.The shut-off device can, for example, be designed as a shut-off valve, which is expediently arranged in the region of a connecting flange on the delivery pipe side outside the material feed container.
Grundsätzlich kann das Absperrorgan auch als in das Rohrinnere gegen die Förderrohr- oder Schwenkrohrwand anpreßbarer, vorzugsweise unter Druckeinwirkung ver¬ formbarer 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 Dicht¬ körper nicht ungewollt aus dem Förderrohr oder dem Schwenkrohr herausgedrängt wird, kann unabhängig von dem Halteorgan oder zusätzlich dazu ein in das Rohrin¬ nere, vorzugsweise von der Reinigungsöffnung aus ein¬ greifendes 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 Druck- luft oder Druckflüssigkeit aufspreizbarer, und gegen die Rohrinnenflache anpreßbarer Ball oder Ballon ausge¬ bildet ist.In principle, the shut-off element can also be designed as a sealing body that can be pressed into the inside of the pipe against the wall of the delivery pipe or swivel pipe, preferably deformable under the action of pressure, which can be inserted into the delivery or swivel pipe from the cleaning cartridge and in this preferably by means of a slack, belt or chain-like holding member is positionable. In order to ensure that the sealing body is not inadvertently forced out of the delivery tube or the swivel tube, a seat or support member for the sealing body, which engages in the interior of the tube, preferably from the cleaning opening, can be provided independently of or in addition to the holding member become. A preferred embodiment of the invention provides that the sealing body as under the action of a pressure medium, preferably pressure Air or hydraulic fluid can be expanded and a ball or balloon can be pressed against the inner surface of the tube.
Im folgenden wird die Erfindung anhand einiger in der Zeichnung in schematischer Weise dargestellter Ausfüh¬ rungsbeispiele näher erläutert. Es zeigenIn the following, the invention is explained in more detail with reference to some exemplary embodiments shown schematically in the drawing. Show it
Fig. 1 eine schaubildliche Darstellung einer Dick¬ stoffpumpe mit S-förmigem Schwenkrohr;1 shows a diagrammatic representation of a thick matter pump with an S-shaped swivel tube;
Fig. 2a bis c zwei Ausführungsvarianten einer Dick¬ stoffpumpe entsprechend Fig. 1 mit Reinigungs- patrone in einer Rückseitenansicht und einer ausschnittsweisen Draufsicht;2a to c show two embodiment variants of a thick matter pump corresponding to FIG. 1 with cleaning cartridge in a rear view and a partial plan view;
Fig. 3 eine schaubildliche Darstellung einer Dick¬ stoffpumpe mit C-förmigem Schwenkrohr;3 shows a diagrammatic representation of a thick matter pump with a C-shaped swivel tube;
Fig. 4a eine Seitenansicht der Dickstoffpumpe nach Fig. 3 in teilweise geschnittener Darstellung;4a shows a side view of the thick matter pump according to FIG. 3 in a partially sectioned illustration;
Fig. 4b und c einen Schnitt durch die Reinigungspatrone entlang der Schnittlinie A-A der Fig. 4a mit unterschiedlicher Füllung;4b and c show a section through the cleaning cartridge along the section line A-A of FIG. 4a with different filling;
Fig. 5 eine Darstellung entsprechend Fig. 4a mit an einer Reinigungsöffnung des Schwenkrohrs ange¬ flanschter Reinigungspatrone;5 shows a representation corresponding to FIG. 4a with a cleaning cartridge flanged to a cleaning opening of the swivel tube;
Fig. 6a eine Darstellung entsprechend Fig. 5 mit am Schwenkrohr angeflanschtem Transportrohr und mit förderzylinderseitigen Begrenzungsschie¬ bern;6a is an illustration corresponding to FIG. 5 with on Swivel tube flanged transport tube and with limit slides on the delivery cylinder side;
Fig. 6b eine Stirnseitenansicht der Begrenzungsschieber nach Fig. 6a.Fig. 6b is an end view of the limit slide according to Fig. 6a.
Die in der Zeichnung dargestellten Zweizylinder-Dick¬ stoffpumpen sind für den Einsatz in stationären und fahrbaren Betonpumpen bestimmt. Sie bestehen im wesent¬ lichen aus zwei Förderzylindern 10 mit hydraulisch im Gegentakt angetriebenen Förderkolben 12, einem Mate¬ rialaufgabebehälter 14 und einem mit einem Schwenkrohr 16 in den Materialaufgabebehälter 14 eingreifenden, mit einem Umsteuermechanismus 18 betätigbaren Schiebervor¬ richtung 20. Die Förderzylinder 10 sind im unteren Be¬ reich über Öffnungen 22 an die Rückwand 24 des Mate¬ rialaufgabebehälters 14 angeschlossen, wobei die Öff¬ nungen 22 auf der Innenseite des Materialaufgabebehäl¬ ters 14 durch eine brillenförmige Verschleißplatte 26 begrenzt sind. Das Schwenkrohr 16 liegt mit seinem ei¬ nen, einen Verschleißring 28 tragenden Ende gegen die Verschleißplatte 26 an und wird durch den Umsteuerme¬ chanismus 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 För¬ derkolben 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 be¬ findliches Förderrohr 42 transportiert wird. Das För¬ derrohr 42 kann an eine nicht dargestellte Förderlei¬ tung eines Betonverteilermasts angeschlossen werden.The two-cylinder thick matter pumps shown in the drawing are intended for use in stationary and mobile concrete pumps. They essentially consist of two delivery cylinders 10 with delivery pistons 12 driven hydraulically in push-pull, a material feed container 14 and a slide device 20 which engages with a swivel tube 16 in the material feed container 14 and can be actuated by a reversing mechanism 18 lower region connected via openings 22 to the rear wall 24 of the material feed container 14, the openings 22 on the inside of the material feed container 14 being delimited by an eyeglass-shaped wear plate 26. The swivel tube 16 bears with its end bearing a wear ring 28 against the wear plate 26 and is pivoted by the reversing mechanism 18 depending on the direction of movement of the delivery pistons 12 in the delivery cylinders 10 in front of one or the other opening 22. In this way, when the delivery piston 12 moves back in the direction of the arrow 30, material is sucked out of the material feed container 14 through the opening 22 in the direction of the arrow 32 into the relevant delivery cylinder 10, while material is directed in the direction via the other delivery piston 12 arrows 34, 36, 38 is transported through the swivel tube 16 into a delivery tube 42 located outside the material feed container 14. The delivery pipe 42 can be connected to a delivery line (not shown) of a concrete placing boom.
Die in Fig. 1 und 3 gezeigten Ausführungsbeispiele un¬ terscheiden 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 Umsteu¬ ermechanismus 18 verbunden, der an seinem nach oben weisenden Ende zwei nach entgegengesetzten Seiten wei¬ sende, 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 Antriebszy¬ linder 52 mit einem weiteren Kugelkopf 54 in je einer förderzylinderfesten, als Kugelpfanne ausgebildeten La¬ gerstelle 56 gelagert.The exemplary embodiments shown in FIGS. 1 and 3 differ primarily in the shape of the swivel tube 16. In the exemplary embodiment according to FIG. 1, the swivel tube is essentially S-shaped. It is connected at its end opposite the feed cylinders to the feed pipe 42 via a tubular pipe swivel 43, which is fixed to the container and coaxial with its pivot axis, and on the other hand it engages with an axle shaft 45 designed as a drive shaft through a rotary bearing 47 of the material feed container 14. The outwardly projecting stub shaft of the axle shaft 45 is connected in a rotationally fixed manner to a reversing lever 46 of the reversing mechanism 18 which, at its upward-facing end, has two bearing points 48, which are designed as ball sockets, for the connection of a spherical head 50 each on the piston side has two drive cylinders 52 of the reversing mechanism 18. On the cylinder side, the drive cylinders 52 are supported with a further ball head 54 in a bearing point 56 which is fixed to the delivery cylinder and is designed as a ball socket.
Im Unterschied dazu ist bei dem in Fig. 3 gezeigten Ausführungsbeispiel ein C-förmiges Schwenkrohr 16 vor¬ gesehen, das von oben her in den Materialaufgabebehäl- ter 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 Förder¬ leitung 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 entge¬ gengesetzten Seiten weisende, als Kugelpfannen ausge¬ bildete Lagerstellen 48 für den Anschluß je eines kol¬ benseitigen Kugelkopfes 50 der beiden Antriebszylinder 52 des Umsteuermechanismus 18 aufweist. Auf der Zylin¬ derseite sind die Antriebszylinder 52 mit einem weite¬ ren Kugelkopf 54 in je einer förderzylinderfesten, als Kugelpfanne ausgebildeten Lagerstelle 56 gelagert. Die Antriebszylinder 52 sind einseitig mit Drucköl beauf¬ schlagbar und enthalten einen den Kugelkopf 50 tragen¬ den Plungerkolben 60.In contrast to this, in the embodiment shown in FIG. 3, a C-shaped swivel tube 16 is provided, which is inserted into the material feed container from above. ter 14 engages. The swivel tube 16 is connected via a flange 40 to the delivery tube 42, which is designed as an extension tube and which in turn is connected to a delivery line of a concrete placing boom via an unillustrated tube rotary connection. The flange 40 is detachably connected by means of two clamping screws 44 to the reversing lever 46 of the reversing mechanism 18, which has at its lower end two bearing points 48, which are designed as ball sockets, on the opposite side, for the connection of a piston head 50 of the two on each side Has drive cylinder 52 of the reversing mechanism 18. On the cylinder side, the drive cylinders 52 are supported with a further ball head 54 in a bearing point 56, which is fixed to the delivery cylinder and is designed as a ball socket. The drive cylinders 52 can be pressurized with pressure oil on one side and contain a plunger 60 carrying the ball head 50.
Am Ende eines Fördervorgangs müssen die Rohrleitungen der Dickstoffpumpe und der Materialaufgabebehälter ent¬ leert und gereinigt werden. Zu diesem Zweck sind im Be¬ reich der Rohrwandungen des Schwenkrohrs 16 (Fig. 3) und/oder des Förderrohrs 42 Reinigungsöffnungen 80 vor¬ gesehen, die mit einem Deckel 82 und einem Kupplungsor¬ gan 84 verschließbar sind.At the end of a conveying process, the pipes of the thick matter pump and the material feed container must be emptied and cleaned. For this purpose, cleaning openings 80 are provided in the area of the tube walls of the swivel tube 16 (FIG. 3) and / or the delivery tube 42, which can be closed with a cover 82 and a coupling member 84.
Wie aus den Fig. 2 und 4 bis 6 zu ersehen ist, kann an die Reinigungsöffnungen 80 wahlweise eine im wesentli¬ chen zylindrische Reinigungspatrone 86 angeschlossen werden, die mit Reinigungskörpern 88,88' oder mit Flüs- sigkeitsbeuteln 88 ' ' bestückt und über die Anschlüsse 90, 92 mit Druckwasser oder Preßluft beaufschlagt wer¬ den kann. Um die Reinigungskörper 88,88 und den Flüs¬ sigkeitsbeutel 88 ' ' mit dem Druckwasser oder der Pre߬ luft durch das Förderrohr 42 und die anschließende För¬ derleitung unter Mitnahme des darin befindlichen Betons hindurchtransportieren zu können, ist zusätzlich auf der Seite der Förderzylinder ein Absperrorgan vorgese¬ hen, 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 aufblasba¬ rer Ballon 98 ausgebildet ist.As can be seen from FIGS. 2 and 4 to 6, an essentially cylindrical cleaning cartridge 86 can optionally be connected to the cleaning openings 80, said cleaning cartridge 86 being equipped with cleaning bodies 88, 88 'or with rivers. liquid bags 88 '' and pressurized water or compressed air can be applied to them via the connections 90, 92. In order to be able to transport the cleaning bodies 88, 88 and the liquid bag 88 ″ with the pressurized water or the compressed air through the conveying pipe 42 and the subsequent conveying line with the concrete contained therein, an additional is on the side of the conveying cylinder Shut-off device provided, which in the case of FIGS. 2a, b and c and 4a is designed as a blocking slide 94, 96 and in the case of FIG. 5 as an inflatable balloon 98 which can be pressed onto the inner surface of the swivel tube 16.
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 Reini¬ gungspatrone 86 weist bei dem Ausführungsbeispiel nach Fig. 2a einen Sperrschieber 106 auf, der während des Fördervorgangs geschlossen ist und beim Reinigungsvor¬ gang in seine Offenstellung gebracht werden kann.The locking slide 94 according to FIGS. 2a to c is located in the area of the pipe rotary connection 43, and is arranged there to be vertically displaceable in the direction of the double arrow 100. In this case, the cleaning opening 80 for the connection of the cleaning cartridge 86 is located on a conveyor tube piece 42 designed as a folding tube, which can be pivoted around the joint 104 for loosening the quick-release fastener 102 for cleaning purposes while releasing the rotating tube connection 43. In the exemplary embodiment according to FIG. 2a, the cleaning cartridge 86 has a locking slide 106 which is closed during the conveying process and can be brought into its open position during the cleaning process.
Alternativ oder in Kombination dazu ist bei dem Ausfüh¬ rungsbeispiel nach Fig. 2b die Reinigungspatrone 86 um das Gelenk 108 gegenüber der Reinigungsöffnung 80 ver¬ schwenkbar, nachdem zuvor das Kupplungsorgan 84 ent- fernt 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, in the exemplary embodiment according to FIG. 2b, the cleaning cartridge 86 can be pivoted about the joint 108 relative to the cleaning opening 80 after the coupling element 84 has been removed beforehand. has been removed. In this way, the opening of the cleaning cartridge 86 for filling with the cleaning bodies 88 is released in a few simple steps.
Bei dem in Fig. 4a bis c gezeigten Ausführungsbeispiel ist ein aus zwei Reinigungspatronen 86 und einer Schie¬ berplatte 110 bestehender Patronenschieber 112 vorgese¬ hen, der an die Reinigungsöffnung 80 des Förderrohrs 42 angeflanscht ist. Durch seitliches Verschieben der Rei¬ nigungspatronen 86 über die Grundplatte 112 hinaus kön¬ nen die Reinigungskörper 88, 88',88'' von unten her in die Reinigungspatronen 86 eingeführt werden.In the exemplary embodiment shown in FIGS. 4 a to c, a cartridge slide 112 consisting of two cleaning cartridges 86 and a slide plate 110 is provided, which is flanged onto the cleaning opening 80 of the delivery pipe 42. By moving the cleaning cartridges 86 laterally beyond the base plate 112, the cleaning bodies 88, 88 ', 88' 'can be inserted into the cleaning cartridges 86 from below.
Beim Reinigungsvorgang wird zunächst der Sperrschieber 96 im Förderrohr 42 geschlossen. Sodann wird eine der Reinigungspatronen 86 über die Reinigungsoffnung 80 geschoben und kurzzeitig am Anschluß 90 mit Wasser be¬ aufschlagt, so daß zwei der drei Reinigungskörper 88 in die Rohrleitung eingepreßt werden. Anschließend wird der Wasseranschluß geschlossen und der dritte Reini¬ gungskörper 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 För¬ derleitung austreten können.During the cleaning process, the blocking slide 96 in the delivery pipe 42 is first closed. Then one of the cleaning cartridges 86 is pushed over the cleaning opening 80 and briefly charged with water at the connection 90, so that two of the three cleaning bodies 88 are pressed into the pipeline. Then the water connection is closed and the third cleaning body 88 is pressed with compressed air via the connection 92 into the delivery line. A discharge stand (not shown) is mounted at the end of the delivery line so that the concrete and the cleaning bodies can safely exit the delivery line.
Wie aus Fig. 4c zu ersehen ist, können die Reinigungs¬ patronen 86 auch als Anpumphilfe verwendet werden, in¬ dem 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 Beu¬ tel 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 inserting a bag 88 ″ filled with a lubricant or lubricant, pressing it into the delivery line with water and then using the concrete to Output of Delivery line is pumped. The bag 88 ″ opens and distributes its contents on the inner surface of 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 Reini¬ gungsvorgang 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 ei¬ nem 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 ge¬ drückt, um anschließend nach Abstellen der Wasserzufuhr zusammen mit dem dritten Reinigungskörper 88 und der davor befindlichen Betonsäule zum Auslaß der Förderlei¬ tung gedrückt zu werden.In the exemplary embodiment shown in FIG. 5, the cleaning cartridge 86 is connected to the cleaning opening 80 of the C-shaped swivel tube 16. In order to shut off the return path to the material feed container 14 during the cleaning process, an inflatable balloon 98 is inserted into the interior of the swivel tube 16, which is captively connected to the cleaning cartridge 86 on a belt 116 and is provided in a specially provided for this purpose at the end on the delivery cylinder side Seat 118 supports. During the cleaning process, the two front cleaning bodies 88 are first pressed with pressurized water via the connection 90 in the direction of the arrows 120 into the delivery pipe 42, and then, after the water supply has been shut off, together with the third cleaning body 88 and the concrete column located in front of it, for the outlet of the delivery line to be pressed.
Bei allen Ausführungsbeispielen können die Reinigungs¬ körper zum nochmaligen Auswischen der Förderleitung vom Förderleitungsende durch die auf Saugbetrieb umgeschal¬ tete Förderpumpe 10,12 bei geöffnetem Absperrorgan 94, 96,98 in den Materialaufgabebehälter 14 zurückgefördert werden. Auf diese Weise wird auch das zum Materialauf¬ gabebehälter führende letzte Förderrohrstück 42 samt Schwenkrohr 16 gereinigt.In all of the exemplary embodiments, the cleaning bodies can be conveyed back into the material feed container 14 from the end of the conveying line by the conveying pump 10, 12 switched to suction operation when the shut-off element 94, 96, 98 is open. In this way, the last conveyor pipe section 42 including the swivel pipe 16 leading to the material feed container is also cleaned.
An der Unterseite des Materialaufgabebehälters 14 be- findet sich eine mit einem Schwenkdeckel 70 verschlie߬ bare Öffnung 72, über die der Materialaufgabebehälter 14 vollständig entleert werden kann.Loading on the underside of the material feed container 14 there is an opening 72 which can be closed with a swivel lid 70 and 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 Be¬ tonpumpe entleert werden. Dazu wird die Reinigungsöff¬ nung 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 ge¬ sorgt wird, daß beim Ansaugen nur der untere Bereich der Förderzylinderöffnungen 22 zum Materialaufgabebe¬ hälter 14 hin offen ist, kann der Materialaufgabebehäl¬ ter mit diesen Maßnahmen nahezu vollständig entleert werden. Der dann noch verbleibende Restbeton kann über die Öffnung 72 entfernt werden.In the exemplary embodiment shown in FIGS. 6a and b, the material feed container 14 can also be emptied via the concrete pump. For this purpose, the cleaning opening 80 on the swivel tube 16 is equipped with a pressure hose 122 and the path to the delivery tube 42 is blocked by the balloon 98. If, in addition, the slide 124 arranged in the area of the spectacle-shaped wear plate 26 and displaceable from top to bottom ensures that only the lower area of the feed cylinder openings 22 is open to the material feed container 14 during suction, the material feed container can also be used these measures are almost completely emptied. The remaining concrete then remaining can be removed via the opening 72.
Zusammenfassend ist folgendes festzustellen: Die Erfin¬ dung 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 Förderzylin¬ dern 10, einem in den Materialaufgabebehälter 14 ein¬ greifenden, 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 Materialauf- gabebehalters angeordneten Abschnitt des Schwenkrohrs 16 in der betreffenden Rohrwand angeordneten ver¬ schließbaren Reinigungsöffnung 80. Erfindungsgemäß ist an die Reinigungsöffnung 80 eine Reinigungspatrone 86 anschließbar, die einen Preßluft- und/oder Druckwasser¬ anschluß 90,92 aufweist, während das Förderrohr 42 und/oder das Schwenkrohr 16 förderzylinderseitig mit¬ tels eines Absperrorgans 94,96,98 verschließbar ist. In summary, the following can be stated: The invention relates to a thick matter pump, in particular a concrete pump, with a material feed container 14, two conveying cylinders 10 opening with their front openings 22 into the interior of the material feed container 14, and one which engages in the material feed container 14 , with one end intermittently alternatingly communicating with the front openings 22 of the delivery cylinders and with its other end connected to a delivery pipe 42 and with a swivel pipe near the end of the delivery pipe 42 or outside of the material section of the swivel tube 16 arranged in the dispensing container and arranged in the relevant tube wall, closable cleaning opening 80 the swivel tube 16 can be closed on the delivery cylinder side by means of a shut-off element 94, 96, 98.

Claims

Patentansprüche Claims
1. Dickstoffpumpe mit einem Materialaufgabebehälter (14) , zwei mit ihren stirnεeitigen Öffnungen (22) in das Innere des Materialaufgabebehälters (14) mündenden, hydraulisch angetriebenen Förderzylin¬ dern (10) , einem in den Materialaufgabebehälter (14) eingreifenden, mit seinem einen Ende taktwei¬ se abwechselnd mit den stirnseitigen Öffnungen (22) der Förderzylinder (10) kommunizierenden und mit seinem anderen Ende an ein Förderrohr (42) angeschlossenen Schwenkrohr (16) und mit einer in der Nähe des schwenkrohrseitigen Endes des Förder¬ rohrs (42) oder in einem außerhalb des Material¬ aufgabebehälters (14) angeordneten Abschnitt des Schwenkrohrs (16) in der betreffenden Rohrwand angeordneten verschließbaren Reinigungsöffnung (80) , dadurch gekennzeichnet, daß an die Reini¬ gungsöffnung (80) eine einseitig zur Reinigungs¬ öffnung hin offene, mindestens einen Preßluft- und/ oder Druckwasseranschluß (90,92) aufweisende Reinigungspatrone (86) anschließbar ist und daß das Förderrohr (42) und/ oder das Schwenkrohr (16) förderzylinderseitig mittels eines Absperrorgans (94,96,98) verschließbar ist.1. thick matter pump with a material feed container (14), two with their end openings (22) opening into the interior of the material feed container (14), hydraulically driven conveying cylinders (10), one engaging in the material feed container (14) with one end cyclically alternating with the front openings (22) of the delivery cylinders (10) and with its other end connected to a delivery pipe (42) swivel pipe (16) and with a near the end of the delivery pipe (42) on the delivery pipe side in a section of the swivel tube (16) arranged outside the material feed container (14) in the relevant tube wall, there is a closable cleaning opening, characterized in that at least one opening on the cleaning opening (80) towards the cleaning opening is open a cleaning cartridge (86) having a compressed air and / or pressurized water connection (90, 92) can be connected and that the delivery pipe (42) and / or the swivel pipe (16) can be closed on the delivery cylinder side by means of a shut-off element (94, 96, 98).
2. Dickstoffpumpe nach Anspruch l, dadurch gekenn¬ zeichnet, daß die Reinigungspatrone (86) mittels eines Sperrorgans, insbesondere eines Sperrschie¬ bers (106,110) zur Reinigungsöffnung (80) hin ab¬ sperrbar ist. 2. slurry pump according to claim 1, characterized gekenn¬ characterized in that the cleaning cartridge (86) by means of a locking member, in particular a lock slide (106, 110) to the cleaning opening (80) can be shut off.
3. Dickstoffpumpe nach Anspruch 1 oder 2, dadurch ge¬ kennzeichnet, daß die Reinigungspatrone (86) im Bereich der Reinigungsöffnung (80) am Förderrohr (42) oder am Schwenkrohr (16) so angelenkt ist, daß sie von der Reinigungsöffnung (80) unter Frei¬ gabe ihrer stirnseitigen Öffnung wegschwenkbar ist.3. thick matter pump according to claim 1 or 2, characterized ge indicates that the cleaning cartridge (86) in the region of the cleaning opening (80) on the delivery pipe (42) or on the swivel pipe (16) is articulated so that it from the cleaning opening (80) can be pivoted away with the release of its front opening.
4. Dickstoffpumpe nach Anspruch 2, dadurch gekenn¬ zeichnet, daß mindestens eine Reinigungspatrone (86) und der Sperrschieber (106) starr miteinander verbunden und wahlweise gegen die Reinigungsöff¬ nung (80) verschiebbar sind.4. slurry pump according to claim 2, characterized gekenn¬ characterized in that at least one cleaning cartridge (86) and the locking slide (106) rigidly connected to one another and optionally against the cleaning opening (80) are displaceable.
5. Dickstoffpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß an die Reinigungsöff¬ nung (80) ein Transportrohr (122) anschließbar ist und daß das Förderrohr (42) oder das Schwenkrohr (16) zum freien Förderrohrende hin mittels eines Absperrorganε (98) verschließbar ist.5. slurry pump according to one of claims 1 to 4, characterized in that a transport pipe (122) can be connected to the cleaning opening (80) and that the delivery pipe (42) or the swivel pipe (16) to the free delivery pipe end by means of a shut-off device (98) can be closed.
6. Dickstoffpumpe mit einem Materialaufgabebehälter (14) , zwei mit ihren stirnseitigen Öffnungen (22) in das Innere des Materialaufgabebehälters (14) mündenden, hydraulisch angetriebenen Förderzylin¬ dern (10) , einem in den Materialaufgabebehälter (14) eingreifenden, mit seinem einen Ende taktwei¬ se abwechselnd mit den stirnseitigen Öffnungen (22) der Förderzylinder (10) kommunizierenden und mit seinem anderen Ende an ein Förderrohr (42) angeschlossenen Schwenkrohr (16) und mit einer in der Nähe des schwenkrohrseitigen Endes des Förder¬ rohrs (42) oder in einem außerhalb des Material¬ aufgabebehälters (14) angeordneten Abschnitt des Schwenkrohrs (16) in der betreffenden Rohrwand angeordneten verschließbaren Reinigungsöffnung (80) , dadurch gekennzeichnet, daß an die Reini¬ gungsöffnung (80) ein Transportrohr (122) an¬ schließbar ist und daß das Förderrohr (42) oder das Schwenkrohr (16) zum freien Förderrohrende hin mittels eines Absperrorgans (98) verschließbar ist.6. thick matter pump with a material feed container (14), two with their front openings (22) opening into the interior of the material feed container (14), hydraulically driven conveying cylinders (10), one engaging in the material feed container (14) with one end alternating with the end openings (22) of the delivery cylinders (10) and with its other end to a delivery pipe (42) connected swivel pipe (16) and with a closable cleaning opening (80) arranged in the vicinity of the swivel pipe end of the conveyor pipe (42) or in a section of the swivel pipe (16) arranged outside the material feed container (14), characterized in that a transport pipe (122) can be connected to the cleaning opening (80) and that the delivery pipe (42) or the swivel pipe (16) can be closed towards the free delivery pipe end by means of a shut-off device (98).
Dickstoffpumpe nach Anspruch 5 oder 6, dadurch ge¬ kennzeichnet, daß die in den Materialaufgabebehäl¬ ter (14) mündenden stirnseitigen Förderzylinder¬ öffnungen (22) gegen Luftzutritt aus dem Material¬ aufgabebehälter (14) zumindest teilweise bis in die Nähe des Materialaufgabebehälterbodens, vor¬ zugsweise mittels eines Schiebers (122) abdeckbar oder verschließbar sind.Thick matter pump according to claim 5 or 6, characterized in that the end-side delivery cylinder openings (22) opening into the material feed container (14) prevent air from the material feed container (14) at least partially up to near the bottom of the material feed container ¬ can be covered or closed by means of a slide (122).
Dickstoffpumpe mit einem Materialaufgabebehälter (14) , zwei mit ihren stirnseitigen Öffnungen (22) in das Innere des Materialaufgabebehälters (14) mündenden, hydraulisch angetriebenen Förderzylin¬ dern (10), einem in den Materialaufgabebehälter (14) eingreifenden, mit seinem einen Ende taktwei¬ se abwechselnd mit den stirnseitigen Öffnungen (22) der FörderZylinder (10) kommunizierenden und mit seinem anderen Ende an ein Förderrohr (42) angeschlossenen Schwenkrohr (16) , dadurch gekenn¬ zeichnet, daß die in den Materialaufgabebehälter (14) mündenden stirnseitigen Förderzylinderöff¬ nungen (22) gegen Luftzutritt aus dem Materialauf¬ gabebehälter (14) zumindest teilweise bis in die Nähe des Materialaufgabebehälterbodens, vorzugs¬ weise mittels eines Schiebers (122) abdeckbar oder verschließbar sind.Thick matter pump with a material feed container (14), two hydraulically driven conveying cylinders (10) opening into the interior of the material feed container (14) with their front openings (22), one engaging in the material feed container (14), with one end tact-white se alternating with the front openings (22) of the delivery cylinder (10) communicating and with its other end to a delivery pipe (42) Connected swivel tube (16), characterized in that the end-side delivery cylinder openings (22) opening into the material feed container (14) prevent air from entering the material feed container (14) at least partially up to the vicinity of the material feed container bottom, preferably by means of of a slide (122) can be covered or closed.
9. Dickstoffpumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Absperrorgan als Absperrschieber (94,96) ausgebildet ist.9. slurry pump according to one of claims 1 to 7, characterized in that the shut-off element is designed as a gate valve (94,96).
10. Dickstoffpumpe nach Anspruch 9, dadurch gekenn¬ zeichnet, daß der Absperrschieber (96) im Bereich eines förderrohrseitigen Anschlußflanschs (40) außerhalb des Materialaufgabebehälters (14) ange¬ ordnet ist.10. slurry pump according to claim 9, characterized gekenn¬ characterized in that the gate valve (96) is arranged in the region of a feed pipe-side connection flange (40) outside of the material feed container (14).
11. Dickstoffpumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Absperrorgan als im Rohrinneren gegen die Förderrohr- oder Schwenk¬ rohrwand anpreßbarer, vorzugsweise unter Druckein¬ wirkung verformbarer Dichtkörper (98) ausgebildet ist.11. Thick matter pump according to one of claims 1 to 7, characterized in that the shut-off element is designed as a sealing body (98) which can be pressed in the interior of the pipe against the delivery pipe or pivoting pipe wall, preferably deformable under the action of pressure.
12. Dickstoffpumpe nach Anspruch 11, dadurch gekenn¬ zeichnet, daß der Dichtkörper (98) von der Reini¬ gungspatrone aus in das Förder- oder Schwenkrohr einführbar und in diesem vorzugsweise mittels ei¬ nes biegeschlaffen, band- oder kettenartigen Hai- teorgans (116) positionierbar ist.12. slurry pump according to claim 11, characterized gekenn¬ characterized in that the sealing body (98) from the cleaning cartridge from the feed or swivel tube insertable and in this preferably by means of a limp, ribbon or chain-like shark teorgans (116) can be positioned.
13. Dickstoffpumpe nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß der Dichtkörper (98) als unter der Einwirkung eines Druckmediums, vorzugsweise von Druckluft oder Druckflüssigkeit aufspreizba- rer, gegen die Rohrinnenfläche anpreßbarer Ballon oder Ball ausgebildet ist.13. Thick matter pump according to claim 11 or 12, characterized in that the sealing body (98) is designed as a balloon or ball which can be pressed against the inner surface of the pipe under the action of a pressure medium, preferably compressed air or pressurized liquid.
14. Dickstoffpumpe nach einem der Ansprüche 11 bis 13, gekennzeichnet durch ein in das Rohrinnere, vor¬ zugsweise von der Reinigungsoffnung aus eingrei¬ fendes Sitz- oder Stützorgan (118) für den Dich¬ tungskörper (98) . 14. Thick matter pump according to one of claims 11 to 13, characterized by a seat or support member (118) for the sealing body (98) which engages into the tube interior, preferably from the cleaning opening.
EP95917350A 1994-04-28 1995-04-21 Thick matter pump Expired - Lifetime EP0757756B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97111498A EP0805272B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP97111499A EP0805273B1 (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

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP97111499A Division EP0805273B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP97111498A Division EP0805272B1 (en) 1994-04-28 1995-04-21 Thick matter pump

Publications (2)

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

Family

ID=6516672

Family Applications (3)

Application Number Title Priority Date Filing Date
EP97111498A Expired - Lifetime EP0805272B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP95917350A Expired - Lifetime EP0757756B1 (en) 1994-04-28 1995-04-21 Thick matter pump
EP97111499A Expired - Lifetime EP0805273B1 (en) 1994-04-28 1995-04-21 Thick matter pump

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Country Link
US (1) US5957675A (en)
EP (3) EP0805272B1 (en)
JP (1) JPH09512321A (en)
DE (4) DE59510098D1 (en)
ES (3) ES2171785T3 (en)
WO (1) WO1995030088A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59707070D1 (en) * 1996-09-14 2002-05-23 Putzmeister Ag DICK FUEL PUMP
NL1004549C2 (en) * 1996-11-18 1998-05-19 Hama Nederland B V Mobile pumping device and coupling.
DE19804863A1 (en) * 1998-02-09 1999-08-12 Putzmeister Ag Slide device for a two-cylinder slurry pump
DE19850009A1 (en) * 1998-09-28 2000-03-30 Putzmeister Ag Truck-mounted concrete pump
DE10054408A1 (en) * 2000-11-02 2002-05-08 Putzmeister Ag Material feed container with sieve grill
DE10155787A1 (en) * 2001-11-14 2003-05-22 Putzmeister Ag Material feed container for two-cylinder thick matter pumps
DE10311066B4 (en) * 2003-03-13 2006-06-08 Schwing Gmbh Pipe cleaning system with safety device
US6802909B1 (en) 2003-04-24 2004-10-12 Doyle J. Crenshaw Method for improving the operation of a pipeline by employing soap pigs
DE102004009363B4 (en) * 2004-02-26 2008-01-24 Schwing Gmbh Piston slurry pump
DE102006020776A1 (en) * 2006-05-03 2007-11-08 Putzmeister Ag Device for introducing cleaning bodies into a delivery line
DE102011079121A1 (en) * 2011-07-14 2013-01-17 Putzmeister Engineering Gmbh Slurry pump with a material supply container having a cleaning opening
CN110067390B (en) * 2019-04-25 2021-06-11 安徽砼筑新材料科技有限公司 Concrete alternate pumping method
DE102020133039A1 (en) * 2020-12-10 2022-06-15 Liebherr-Mischtechnik Gmbh Thick material conveyor device with folding arch and folding arch
DE102022211179A1 (en) * 2022-10-21 2024-05-02 Putzmeister Engineering Gmbh Process, fluid system and system
DE102023110126B3 (en) 2023-04-20 2024-05-08 Putzmeister Engineering Gmbh Thick matter pump and method for operating a thick matter pump

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063079A (en) * 1960-03-31 1962-11-13 Panhandle Eastern Pipe Line Co Combination valve and cleaning ball launcher for use in pressure flow lines
US3146477A (en) * 1963-04-22 1964-09-01 Panhandle Eastern Pipe Line Co Combination valve and cleaning ball launcher
DE1927501A1 (en) * 1969-05-30 1970-12-17 Blaupunkt Werke Gmbh Circuit arrangement for convergence adjustment in multi-standard color television receivers
US3543324A (en) * 1969-06-02 1970-12-01 Kenneth M Knapp Pipeline pig and associated apparatus
CH597513A5 (en) * 1977-02-22 1978-04-14 Niklaus Seiler Reciprocating pump for conveying viscous material
DE2927324C3 (en) * 1979-07-06 1994-09-15 Schwing Gmbh F Pipe fitting with a housing that can be installed in lines that convey pressurized thick materials, preferably concrete, for changing a wiper
US4373225A (en) * 1979-07-06 1983-02-15 Friedrich Wilh. Schwing, Gmbh Piping valve with a housing for the transfer of a wiper insertable in conduits that supply pressurized viscous material, preferably concrete
DE2943967A1 (en) * 1979-10-31 1981-05-14 Friedrich Wilh. Schwing Gmbh, 4690 Herne Cleaning device for concrete pump - has chamber containing cleaning ball, moved from external disengaged position into injection position
JPS58113589A (en) * 1981-12-28 1983-07-06 Niigata Eng Co Ltd Cleaning device for pump with reciprocating pipe
DE3229103C1 (en) * 1982-08-04 1984-03-01 WIBAU AG, 6466 Gründau Cleaning device for emptying and cleaning the feed line of a concrete pump equipped with a charging container
JPS59190485A (en) * 1983-04-11 1984-10-29 Kichio Tokuyama Pressure conveyance equipment for concrete pump
JPS6056186A (en) * 1983-09-07 1985-04-01 Ishikawajima Harima Heavy Ind Co Ltd Concrete pump cleaner
DE3430193A1 (en) * 1984-08-16 1986-02-27 Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH, 8754 Großostheim SWIVEL TUBE SYSTEM FOR CONCRETE PUMPS
JPH03149360A (en) * 1989-11-07 1991-06-25 Mitsubishi Heavy Ind Ltd Cleaning device for concrete pump
CA2007977C (en) * 1990-01-17 1996-04-23 Rene Letarte Sludge pump
JP3151536B2 (en) * 1990-11-26 2001-04-03 石川島建機株式会社 Method and apparatus for cleaning suction / discharge valve of high viscosity fluid pump
JP3158256B2 (en) * 1991-07-01 2001-04-23 石川島建機株式会社 Concrete hopper
JP2895322B2 (en) * 1992-07-21 1999-05-24 三菱重工業株式会社 Residual concrete treatment method for concrete pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9530088A1 *

Also Published As

Publication number Publication date
DE19514750A1 (en) 1995-11-02
EP0805272B1 (en) 2002-03-06
DE59510098D1 (en) 2002-04-11
EP0805273A2 (en) 1997-11-05
EP0757756B1 (en) 1999-01-27
ES2128725T3 (en) 1999-05-16
EP0805272A2 (en) 1997-11-05
US5957675A (en) 1999-09-28
JPH09512321A (en) 1997-12-09
EP0805273B1 (en) 2002-03-06
WO1995030088A1 (en) 1995-11-09
ES2171785T3 (en) 2002-09-16
ES2171784T3 (en) 2002-09-16
DE59504991D1 (en) 1999-03-11
DE59510099D1 (en) 2002-04-11
EP0805272A3 (en) 1998-01-07
EP0805273A3 (en) 1998-01-07

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