EP0988450B1 - Two-cylinder thick matter pump - Google Patents
Two-cylinder thick matter pump Download PDFInfo
- Publication number
- EP0988450B1 EP0988450B1 EP98933598A EP98933598A EP0988450B1 EP 0988450 B1 EP0988450 B1 EP 0988450B1 EP 98933598 A EP98933598 A EP 98933598A EP 98933598 A EP98933598 A EP 98933598A EP 0988450 B1 EP0988450 B1 EP 0988450B1
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- EP
- European Patent Office
- Prior art keywords
- delivery
- cylinder
- filling tank
- limb
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
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- 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
- F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
- F04B7/0023—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having a rotating movement
Definitions
- the invention relates to a two-cylinder high-pressure pump according to the preamble of claim 1.
- the thick matter pump according to the invention serves to promote Substances or mixtures of substances from muddy to viscous Consistency, which is preferably solid particles in a particular May contain concentration.
- An example of such Mixtures of materials forms concrete, in which the solid particles of sand and Gravel grains are present.
- Such pumps convey the thick matter with their alternating suction and delivery cylinders under pressure through a delivery line.
- One serves the cylinders upstream filling container, the suction feed cylinder to offer a sufficiently large amount of the thick matter.
- the filling container therefore has an agitator, which on the one hand keeps the thick matter in motion in the container and on the other hand feeds the openings of the feed cylinders, so that they cannot suck in air during normal operation.
- To the shaft of the agitator is arranged in the filling container and carries stirring tools, which have a conveying effect in the direction the cylinder openings result and usually the shape of have paddles.
- Pipe slide valve which forms the end of the delivery line, with this but is articulated.
- the free end of the pipe slide moves between the two openings of the feed cylinder in time with the intake and Delivery strokes of their pistons, so that the delivery cylinder Thick material is pressed into the inlet leg of the pipe slide valve the opening of the other feed cylinder is released, d. H. in direct connection with those contained in the feed cylinder Thick matter stands and sucks it.
- the one in the entry leg thick matter conveyed under pressure gets into the Exit leg of the slide valve and then occurs immediately from this into the delivery line.
- the Two-cylinder high-pressure pump according to the invention as a car pump is mobile, there is a need to adjust the height of the filling container to restrict. Then a sufficient filling volume is required a relatively large width of the filling container and a funnel-shaped inclination of at least its front wall, d. H. the wall that is in extension of the feed cylinder outside is arranged, while the rear wall delimiting the filling container forms at the delivery cylinder ends.
- the arrangement of the Pipe slide valve in the filling container, which in the invention Two-cylinder high-pressure pump is provided that leads to a movement in addition to the agitator in the thick matter results as soon as the pipe slide valve makes its control movements receives.
- Such two-cylinder high-density pumps are already available as concrete pumps known (DE-AS 23 15 857). This results in the arrangement the paddle at the ends of the agitator shaft in immediate Close to the side wall of the filling container. Between the circles, which the paddles arranged outside when the Describe the agitator shaft, the openings of the cylinders. The inlet leg of the tube slide valve is in front of the cylinder openings arranged in the filling container.
- the paddle can use the two-cylinder thick matter pump to remove the thick matter Do not feed directly to the cylinder openings for suction exclude air into the delivery cylinder during the suction cycle, because the one that goes back and forth in front of the cylinder openings Inlet leg of the pipe slide between the middle space the two paddles on the agitator shaft. That is why the paddles have the desired loosening effect in the middle area of the filling container in front of the cylinder openings not instead. In operation it therefore happens that in this middle area the thick material thickens and for example in the case of concrete, it forms a bridge which is used to suck in the concrete hindered or even prevented in the cylinders. This will at least the delivery rate, especially for concrete pumps greatly reduced.
- two-cylinder thick matter pumps are known (US Pat. No. 3,929,400), in which a pipe slide is arranged with its outlet leg behind the agitator shaft on the rear wall of the filling container of a two-cylinder thick matter pump.
- the inlet openings of the feed cylinders are arranged behind the rear wall of the container and the outlet leg is located between the agitator shaft and the rear wall of the filling container.
- the inlet and outlet legs of the pipe slide form an approximately right-angled L-shaped overall arrangement, the outlet leg being oriented vertically and the inlet leg leading to the two-cylinder thick matter pump running horizontally.
- the object of the invention is to develop a two-cylinder thick matter pump of the generic type in such a way that, after the thick matter conveyance has ended, the thick matter, which can only be removed with difficulty, is to be reduced.
- the central axis of the exit leg towards the back wall of the filling container the vertical is inclined so that the entry leg of the L-shaped Unit faces down.
- the cylinder openings are here deeper than the bottom of the filling container, creating the residual thick be kept low in the filling container after the thick matter has been conveyed can, with the agitator the thick matter to the middle of the Filling container promotes.
- the advantage of such a two-cylinder high-pressure pump is also that after the shutdown of the Funding no longer eligible thick matter independently of the filling volume of the filling container.
- the level of the filler by sufficient Enlargement of the filling container without difficulty lift so far that when the thick material is sucked in, no suction craters at high suction speed in the filling container can form, get through the air into the feed cylinder can. Loss of thick matter and disposal difficulties with Clearing out the no longer recoverable thick matter residue from the Filling containers can be significantly reduced as a result.
- the cylinder openings are lower than the bottom of the filling container a hydrostatic thick matter in front of the respective suction opening or concrete pressure available, which corresponds to the height of the filling container bottom exceeds, so that at the end of the conveyor operation the filling container can be practically emptied.
- the invention also the features of the claim 4, after which u. a. the rotary bearing of the pipe slide, which whose control movements allow on the outside of the Rear wall of the filling container is arranged.
- the upper one Make the opening of the filling container completely free and given Dimensions of the filling container the narrowing of the filling opening through the pipe valve, with L-shaped pipe valves mainly through its exit leg to a minimum to reduce.
- the cylinder openings laid in a specially built channel-shaped housing which is closed except for an opening in the filling container is.
- the channel shape encloses the entry leg of the Pipe slide valve and ensures that the of the entry leg displacement of the pipe switch caused by swiveling remains low. This is desirable because the Swiveling the pipe slide on the back of the entry leg occurring stern wave no longer to a cavity leads and thereby improves the filling of the suction cylinder becomes.
- the driving forces of the Pipe switch which is also a significant advantage.
- the generally designated 1 slurry pump according to the Embodiment has a filling container 2, in the of above the concrete to be conveyed, for example from a truck mixer is introduced via a slide.
- the filling container has a rectangular opening 3, the parallel longer sides of which Form front wall 4 and a rear wall 5.
- the floor plans of the Side walls 6 and 7 show a lower arch 8 and diverging Leg 9 or 10. This results in an open top Trough shape of the filling container 2.
- a filling shaft 2 passes through an agitator shaft 11.
- This is equipped with stirring tools, which non-rotatably attached to the shaft and offset against each other as well spaced apart in the longitudinal direction of the shaft are.
- the stirring tools 12 to 14 are symmetrical to Longitudinal plane of the filling container 3 arranged and range with increasing Atomic number up to the exit leg 15 one generally designated 16, the other Leg serves as an entry leg for the concrete and with the Exit leg 15 includes an angle of approximately 90 °.
- a pivot bearing 20 supports the pipe slide 16 on a crossbar 21 starting at 22 and 23 at both ends of rising Supports is worn.
- a channel-shaped housing 24 has its inner opening 25 flanged to the tank bottom at 26.
- the housing 24 has an arcuate rear wall 27 whose arc of pivoting movement of the entry leg corresponds.
- On the inside of the arcuate wall 27 sits an eyeglass plate 28 while a Cutting ring 29 the wearable end of the entry leg 17th forms and with a rubber-elastic seal 30 against the Glasses plate 28 is pressed.
- connection housing 31 which hinges on both sides to rising Supports 32 and 33 are connected to form the connection to the feed cylinders 34 and 35.
- the glasses plate encloses the two openings 45 and 46, through which the feed cylinders 34, 35 suck or through the Promote pipe slider 16 in the delivery line 19 concrete.
- This Openings form the inner end of two pipe sockets 38 and 39, which face outward from the arcuate rear wall 27 of the channel housing 24 are curved to the design lateral distance between the two feed cylinders 34 and 35 with to bridge their pistons 36 and 37.
- the L-shaped unit from the entry leg 17 and the Exit leg 15 and the 90 ° elbow of the pipe slide 16 is towards the rear towards the rear wall 5 of the filling container 2 and the delivery cylinders 34, 35 behind it by approx. 30 ° inclined.
- the entry leg 17 and the him enclosing channel housing 24 down.
- Under the opening of the channel housing in the filling container 2 results from this Chute 47, on which the concrete in front of the delivery cylinder openings 45 and 46 is funded.
- the pipe slide 16 swings in time with the opposing pistons 36 and 37 in front of the feed cylinder openings of the intake Piston 37 about the longitudinal axis of its outlet leg 15 in the bearing 20 and the pipe swivel 18 of the delivery line 19.
- the pipe slide is also with the pin 48 of his lower drive shaft 40 supported on the bottom of the chute 47. Transfer a lower drive 41 or an upper drive 42 the kinetic energy for the pipe slide on the shaft 40 or the upper end of the outlet leg 15 between the Bearing 20 and the tubular swivel joint 18th
- the delivery cylinders 34, 35 are perpendicular tilted backwards upwards.
- the connection between the slope the chute 47 and the channel housing 24 with the delivery cylinder ends manufactures the connector housing 31 that the pipe elbow 49, 50 and at 43 and 44 to the channel housing 24 is connected.
- the concrete is placed at an angle employed paddle 12 to 14 of the agitator from both sides of the filling container 2 shoveled to the center and reaches the Chute 47 in front of the cylinder openings 45 and 46 respectively suction feed cylinder 34 and 35.
- the filling container can be practically emptied because no residual concrete in the filling container 2 due to the action of the paddles remains.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung betrifft eine Zweizylinderdickstoffpumpe gemäß dem Oberbegriff des Anspruches 1.The invention relates to a two-cylinder high-pressure pump according to the preamble of claim 1.
Die erfindungsgemäße Dickstoffpumpe dient zur Förderung von Stoffen oder Stoffgemischen von schlammiger bis zähflüssiger Konsistenz, die vorzugsweise feste Partikel in einer bestimmten Konzentration enthalten können. Ein Beispiel für derartige Stoffgemische bildet Beton, in dem die festen Partikel aus Sandund Kieskörnern vorliegen. Solche Pumpen fördern den Dickstoff mit ihren abwechselnd ansaugenden und fördernden Zylindern unter Druck durch eine Förderleitung. Dabei dient ein den Zylindern vorgeschalteter Füllbehälter dazu, dem saugenden Förderzylinder eine hinreichend große Menge des Dickstoffes anzubieten.The thick matter pump according to the invention serves to promote Substances or mixtures of substances from muddy to viscous Consistency, which is preferably solid particles in a particular May contain concentration. An example of such Mixtures of materials forms concrete, in which the solid particles of sand and Gravel grains are present. Such pumps convey the thick matter with their alternating suction and delivery cylinders under pressure through a delivery line. One serves the cylinders upstream filling container, the suction feed cylinder to offer a sufficiently large amount of the thick matter.
Die meisten Dickstoffe neigen jedoch, insbesondere in der Ruhe zur Verfestigung. Das kann eine Folge von Sedimentationserscheinungen sein, bei der Förderung von Beton kommen auch andere Entmischungstendenzen vor, die zum frühzeitigen Verfestigen des Betons führen. Bei der erfindungsgemäßen Dickstoffpumpe weist der Füllbehälter deswegen ein Rührwerk auf, welches einerseits den Dickstoff im Behälter in Bewegung hält und andererseits den Öffnungen der Förderzylinder zuführt, so daß diese im Normalbetrieb keine Luft ansaugen können. Dazu ist die Welle des Rührwerkes im Füllbehälter angeordnet und trägt Rührwerkzeuge, welche einen Fördereffekt in Richtung auf die Zylinderöffnungen ergeben und in der Regel die Form von angestellten Paddeln aufweisen.However, most fats tend to, especially at rest for solidification. This can be a result of sedimentation come in when conveying concrete too other segregation tendencies before that solidify early of the concrete. In the thick matter pump according to the invention the filling container therefore has an agitator, which on the one hand keeps the thick matter in motion in the container and on the other hand feeds the openings of the feed cylinders, so that they cannot suck in air during normal operation. To the shaft of the agitator is arranged in the filling container and carries stirring tools, which have a conveying effect in the direction the cylinder openings result and usually the shape of have paddles.
Zur Auf- und Zusteuerung der Förderzylinderöffnungen dienen bei der erfindungsgemäßen Zweizylinderdickstoffpumpe ein Rohrschieber, der das Ende der Förderleitung bildet, mit dieser aber gelenkig verbunden ist. Das freie Ende des Rohrschiebers bewegt sich unter Zuführung von Antriebsenergie zwischen den beiden Öffnungen der Förderzylinder im Takt der Ansaug- und Förderhübe ihrer Kolben, so daß der fördernde Zylinder den Dickstoff in den Eintrittsschenkel des Rohrschiebers preßt, während die Öffnung des anderen Förderzylinders freigegeben ist, d. h. in unmittelbarer Verbindung mit den im Förderzylinder enthaltenen Dickstoff steht und diesen ansaugt. Der in den Eintrittsschenkel unter Druck geförderte Dickstoff gelangt in den Austrittsschenkel des Rohrschiebers und tritt dann unmittelbar aus diesem in die Förderleitung über.Serve to open and close the feed cylinder openings in the two-cylinder high-pressure pump according to the invention Pipe slide valve, which forms the end of the delivery line, with this but is articulated. The free end of the pipe slide moves between the two openings of the feed cylinder in time with the intake and Delivery strokes of their pistons, so that the delivery cylinder Thick material is pressed into the inlet leg of the pipe slide valve the opening of the other feed cylinder is released, d. H. in direct connection with those contained in the feed cylinder Thick matter stands and sucks it. The one in the entry leg thick matter conveyed under pressure gets into the Exit leg of the slide valve and then occurs immediately from this into the delivery line.
Aus verschiedenen Gründen, insbesondere aber dann, wenn die erfindungsgemäße Zweizylinderdickstoffpumpe als Autopumpe mobil ist, ergibt sich die Notwendigkeit, die Höhe des Füllbehälters zu beschränken. Dann verlangt ein ausreichendes Füllvolumen eine verhältnismäßig große Breite des Füllbehälters und eine trichterförmige Neigung mindestens seiner Vorderwand, d. h. der Wand, die in Verlängerung der Förderzylinder außen angeordnet ist, während die Rückwand die Begrenzung des Füllbehälters an den Förderzylinderenden bildet. Die Anordnung des Rohrschiebers im Füllbehälter, die bei der erfindungsgemäßen Zweizylinderdickstoffpumpe vorgesehen ist führt dazu, daß sich ein zusätzlich zu dem Rührwerk einstellende Bewegung im Dickstoff ergibt, sobald der Rohrschieber seine Steuerbewegungen aufnimmt.For various reasons, especially if the Two-cylinder high-pressure pump according to the invention as a car pump is mobile, there is a need to adjust the height of the filling container to restrict. Then a sufficient filling volume is required a relatively large width of the filling container and a funnel-shaped inclination of at least its front wall, d. H. the wall that is in extension of the feed cylinder outside is arranged, while the rear wall delimiting the filling container forms at the delivery cylinder ends. The arrangement of the Pipe slide valve in the filling container, which in the invention Two-cylinder high-pressure pump is provided that leads to a movement in addition to the agitator in the thick matter results as soon as the pipe slide valve makes its control movements receives.
Solche Zweizylinderdickstoffpumpen sind als Betonpumpen bereits bekannt (DE-AS 23 15 857). Hierbei ergibt sich die Anordnung der Paddel an den Enden der Rührwerkwelle in unmittelbarer Nähe der Seitenwand des Füllbehälters. Zwischen den Teilkreisen, die die außen angeordneten Paddel bei der Drehung der Rührwerkwelle beschreiben, liegen die Öffnungen der Zylinder. Der Eintrittsschenkel des Rohrschiebers ist vor den Zylinderöffnungen im Füllbehälter angeordnet. Bei einem derartigen Aufbau der Zweizylinderdickstoffpumpe können die Paddel den Dickstoff den Zylinderöffnungen nicht unmittelbar zuführen, um das Ansaugen von Luft in die Förderzylinder beim Saugtakt auszuschließen, weil der vor den Zylinderöffnungen hin- und hergehende Eintrittsschenkel des Rohrschiebers den mittleren Raum zwischen den beiden Paddeln auf der Rührwerkwelle beansprucht. Deswegen findet die erwünschte auflockernde Wirkung der Paddel im mittleren Bereich des Füllbehälters vor den Zylinderöffnungen nicht statt. Im Betrieb kommt es deswegen vor, daß in diesem mittleren Bereich der Dickstoff andickt und beispielsweise bei Beton eine Brücke bildet, welche das Ansaugen des Betons in die Zylinder behindert oder gar verhindert. Dadurch wird die Förderleistung insbesondere bei Betonpumpen mindestens stark herabgesetzt.Such two-cylinder high-density pumps are already available as concrete pumps known (DE-AS 23 15 857). This results in the arrangement the paddle at the ends of the agitator shaft in immediate Close to the side wall of the filling container. Between the circles, which the paddles arranged outside when the Describe the agitator shaft, the openings of the cylinders. The inlet leg of the tube slide valve is in front of the cylinder openings arranged in the filling container. With such a structure The paddle can use the two-cylinder thick matter pump to remove the thick matter Do not feed directly to the cylinder openings for suction exclude air into the delivery cylinder during the suction cycle, because the one that goes back and forth in front of the cylinder openings Inlet leg of the pipe slide between the middle space the two paddles on the agitator shaft. That is why the paddles have the desired loosening effect in the middle area of the filling container in front of the cylinder openings not instead. In operation it therefore happens that in this middle area the thick material thickens and for example in the case of concrete, it forms a bridge which is used to suck in the concrete hindered or even prevented in the cylinders. This will at least the delivery rate, especially for concrete pumps greatly reduced.
Ferner sind Zweizylinderdickstoffpumpen bekannt (US - A 3 929
400), bei denen ein Rohrschieber mit seinem Austrittsschenkel
hinter der Rührwerkwelle an der Rückwand des Füllbehälters einer
Zweizylinderdickstoffpumpe angeordnet ist. Hierbei sind die
Eintrittsöffnungen der Förderzylinder hinter der Rückwand des
Behälters angeordnet und befindet sich der Austrittsschenkel
zwischen der Rührwerkwelle und der Rückwand des Füllbehälters.
Der Eintritts- und der Austrittsschenkel des Rohrschiebers
bilden hierbei eine etwa rechtwinklige L-förmige Gesamtanordnung,
wobei der Austrittsschenkel vertikal ausgerichtet ist und
der zur Zweizylinderdickstoffpumpe führende Eintrittsschenkel
horizontal verläuft. Bei dieser Bauweise kann am Ende des
Pumpvorgangs Restbeton im Füllbereich verbleiben, der, um eine
Aushärtung und damit eine Störung im späteren Pumpbetrieb zu
vermeiden, zumeist sehr mühsam entfernt werden muss. Diese
Probleme treten bei Arbeitspausen am Ende der Dickstofförderung
auf.
Aufgabe der Erfindung ist es, eine Zweizylinderdickstoffpumpe
der gattungsgemäßen Art derart weiterzubilden, dass nach Beendigung
der Dickstofförderung der nur mühsam entfernbare Dickstoff
verringert werden soll.Furthermore, two-cylinder thick matter pumps are known (US Pat. No. 3,929,400), in which a pipe slide is arranged with its outlet leg behind the agitator shaft on the rear wall of the filling container of a two-cylinder thick matter pump. Here, the inlet openings of the feed cylinders are arranged behind the rear wall of the container and the outlet leg is located between the agitator shaft and the rear wall of the filling container. The inlet and outlet legs of the pipe slide form an approximately right-angled L-shaped overall arrangement, the outlet leg being oriented vertically and the inlet leg leading to the two-cylinder thick matter pump running horizontally. With this type of construction, residual concrete can remain in the filling area at the end of the pumping process, which usually has to be removed very laboriously in order to avoid hardening and thus a malfunction in the later pumping operation. These problems occur during work breaks at the end of the thick matter production.
The object of the invention is to develop a two-cylinder thick matter pump of the generic type in such a way that, after the thick matter conveyance has ended, the thick matter, which can only be removed with difficulty, is to be reduced.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 geklärt, wobei die Unteransprüche zweckmäßige Weiterbildungen betreffen.This object is achieved by the features of Claim 1 clarified, the subclaims expedient Further training concerns.
Nach Maßgabe der Erfindung ist die Mittelachse des Austrittsschenkels in Richtung auf die Rückwand des Füllbehälters gegen die Vertikale geneigt ist, so dass der Eintrittsschenkel der L-förmigen Baueinheit nach unten weist. Dadurch wirkt der Eintrittsschenkel nach Beendigung der Dickstofförderung als schräggerichtete Schurre, auf die der Dickstoff vor die Förderzylinderöffnungen gefördert wird. Die Zylinderöffnungen liegen hierbei tiefer als der Boden des Füllbehälters, wodurch der Restdickstoff im Füllbehälter nach der Dickstofförderung gering gehalten werden kann, wobei auch das Rührwerk den Dickstoff zur Mitte des Füllbehälters fördert. Der Vorteil einer solchen Zweizylinderdickstoffpumpe liegt außerdem darin, dass die nach Stillsetzen der Förderung nicht mehr förderbare Dickstoffmenge unabhängig vom Füllvolumen des Füllbehälters ist. Daher kann man bei Verwirklichung der Erfindung den Spiegel des Füllstoffes durch ausreichende Vergrößerung des Füllbehälters ohne Schwierigkeiten so weit anheben, dass sich beim Ansaugen des Dickstoffes selbst bei hoher Sauggeschwindigkeit im Füllbehälter keine Saugkrater bilden können, durch die Luft in die Förderzylinder gelangen kann. Dickstoffverluste und Entsorgungsschwierigkeiten beim Ausräumen des nicht mehr förderbaren Dickstoffrestes aus dem Füllbehälter lassen sich dadurch entscheidend vermindern. Dadurch, dass in Folge der erfindungsgemäßen Bauweise die Zylinderöffnungen tiefer als der Boden des Füllbehälters liegen, steht vor der jeweiligen Ansaugöffnung ein hydrostatischer Dickstoff- bzw. Betondruck zur Verfügung, der die Höhe des Füllbehälterbodens übersteigt, so dass am Ende des Förderbetriebs der Füllbehälter praktisch leergezogen werden kann.According to the invention, the central axis of the exit leg towards the back wall of the filling container the vertical is inclined so that the entry leg of the L-shaped Unit faces down. This makes the entry leg work after the end of the thick matter conveyance as inclined Chute on which the thick material in front of the feed cylinder openings is promoted. The cylinder openings are here deeper than the bottom of the filling container, creating the residual thick be kept low in the filling container after the thick matter has been conveyed can, with the agitator the thick matter to the middle of the Filling container promotes. The advantage of such a two-cylinder high-pressure pump is also that after the shutdown of the Funding no longer eligible thick matter independently of the filling volume of the filling container. Therefore one can at realization the invention the level of the filler by sufficient Enlargement of the filling container without difficulty lift so far that when the thick material is sucked in, no suction craters at high suction speed in the filling container can form, get through the air into the feed cylinder can. Loss of thick matter and disposal difficulties with Clearing out the no longer recoverable thick matter residue from the Filling containers can be significantly reduced as a result. Thereby, that as a result of the construction according to the invention the cylinder openings are lower than the bottom of the filling container a hydrostatic thick matter in front of the respective suction opening or concrete pressure available, which corresponds to the height of the filling container bottom exceeds, so that at the end of the conveyor operation the filling container can be practically emptied.
Vorzugsweise verwirklicht man bei den bisher beschriebenen Ausführungsformen der Erfindung auch die Merkmale des Anspruches 4, wonach u. a. das Drehlager des Rohrschiebers, welches dessen Steuerbewegungen ermöglicht an der Außenseite der Rückwand des Füllbehälters angeordnet ist. Hierdurch ist es nämlich möglich, im Gegensatz zum Stand der Technik die obere Öffnung des Füllbehälters völlig frei zu machen und bei gegebenen Abmessungen des Füllbehälters die Einengung der Einfüllöffnung durch den Rohrschieber, bei L-förmigen Rohrschiebern hauptsächlich durch dessen Austrittsschenkel auf ein Minimum zu verringern. One preferably realizes in the previously described embodiments the invention also the features of the claim 4, after which u. a. the rotary bearing of the pipe slide, which whose control movements allow on the outside of the Rear wall of the filling container is arranged. This is it namely, in contrast to the prior art, the upper one Make the opening of the filling container completely free and given Dimensions of the filling container the narrowing of the filling opening through the pipe valve, with L-shaped pipe valves mainly through its exit leg to a minimum to reduce.
Mit den Merkmalen des Anspruches 5 werden die Zylinderöffnungen
in ein eigens angebautes kanalförmiges Gehäuse verlegt,
welches bis auf eine Öffnung in den Füllbehälter in sich geschlossen
ist. Die Kanalform umschließt den Eintrittsschenkel des
Rohrschiebers und sorgt dafür, daß die von dem Eintrittsschenkel
der Rohrweiche beim Schwenken verursachte Dickstoffverdrängung
gering bleibt. Das ist wünschenswert, weil die beim
Schwenken des Rohrschiebers an der Rückseite des Eintrittsschenkels
auftretende Heckwelle nicht mehr zu einem Hohlraum
führt und dadurch die Füllung des ansaugenden Zylinders verbessert
wird. Außerdem vermindern sich die Antriebskräfte der
Rohrweiche, was ebenfalls von erheblichem Vorteil ist.With the features of
Die Einzelheiten, weiteren Merkmale und andere Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispieles anhand der Figuren in der Zeichnung. Es zeigen
- Fig. 1
- eine im Querschnitt gezeichnete Teilansicht einer Betonpumpe gemäß der Erfindung,
- Fig. 2
- eine ebenfalls teilweise im Schnitt gehaltene Draufsicht auf den Gegenstand der Fig. 1 etwa längs der Linie II-II der Fig. 1 und
- Fig. 3
- eine Teilansicht im wesentlichen längs der Linie III-III der Fig. 2.
- Fig. 1
- 2 shows a cross-sectional partial view of a concrete pump according to the invention,
- Fig. 2
- a likewise partly in section plan view of the object of FIG. 1 approximately along the line II-II of FIGS. 1 and
- Fig. 3
- a partial view substantially along the line III-III of FIG. 2nd
Die allgemein mit 1 bezeichnete Dickstoffpumpe gemäß dem
Ausführungsbeispiel weist einen Füllbehälter 2 auf, in den von
oben der zu fördernde Beton beispielsweise aus einem Fahrmischer
über eine Rutsche eingeführt wird. Der Füllbehälter hat
eine rechteckige Öffnung 3, deren parallele längere Seiten eine
Vorderwand 4 und eine Rückwand 5 bilden. Die Grundrisse der
Seitenwände 6 bzw. 7 zeigen einen unteren Bogen 8 und divergierende
Schenkel 9 bzw. 10. Dadurch ergibt sich eine oben offene
Trogform des Füllbehälters 2.The generally designated 1 slurry pump according to the
Embodiment has a
Etwa in der Quermitte durchsetzt den Füllbehälter 2 eine Rührwerkwelle
11. Diese ist mit Rührwerkzeugen besetzt, welche
drehfest auf der Welle befestigt und gegeneinander versetzt sowie
in Längsrichtung der Welle im Abstand voneinander angeordnet
sind. Die Rührwerkzeuge 12 bis 14 sind symmetrisch zur
Längsebene des Füllbehälters 3 angeordnet und reichen mit steigender
Ordnungszahl etwa bis zum Austrittsschenkel 15 eines
allgemein mit 16 bezeichneten Rohrschiebers, dessen anderer
Schenkel als Eintrittsschenkel für den Beton dient und mit dem
Austrittsschenkel 15 einen Winkel von ca. 90° einschließt.
Dadurch ergibt sich eine L-förmige Anordnung des Rohrschiebers,
der in einem Rohrdrehgelenk 18 um die Mittelachse des
aufgehenden Austrittsschenkels 15 schwenkt, wodurch das Rohrdrehgelenk
18 mit dem Ende einer Förderleitung 19 verbunden
ist. Ein Drehlager 20 stützt den Rohrschieber 16 auf einer Traverse
21 ab, die an beiden Enden bei 22 und 23 von aufgehenden
Stützen getragen wird.Approximately in the center, a filling
Ein kanalförmiges Gehäuse 24 ist mit seiner inneren Öffnung 25
bei 26 an den Behälterboden angeflanscht. Das Gehäuse 24 hat
eine bogenförmige Rückwand 27 deren Bogen der Schwenkbewegung
des Eintrittsschenkels entspricht. Auf der Innenseite der
bogenförmigen Wand 27 sitzt eine Brillenplatte 28, während ein
Schneidring 29 das verschleißbare Ende des Eintrittsschenkels 17
bildet und mit einer kautschuk-elastischen Dichtung 30 gegen die
Brillenplatte 28 gepreßt wird.A channel-shaped
Ein Anschlußgehäuse 31, welches beiderseits gelenkig an aufgehende
Stützen 32 und 33 angeschlossen ist, bildet die Verbindung
zu den Förderzylindern 34 und 35.A
Die Brillenplatte umschließt die beiden Öffnungen 45 und 46,
durch die die Förderzylinder 34, 35 ansaugen bzw. durch den
Rohrschieber 16 in die Förderleitung 19 Beton fördern. Diese
Öffnungen bilden das jeweils innere Ende von zwei Rohrstutzen
38 und 39, welche nach außen von der bogenförmigen Rückwand
27 des Kanalgehäuses 24 gekrümmt sind, um den bauartbedingten
seitlichen Abstand der beiden Förderzylinder 34 und 35 mit
ihren Kolben 36 und 37 zu überbrücken.The glasses plate encloses the two
Die L-förmige Baueinheit aus dem Eintrittsschenkel 17 und dem
Austrittsschenkel 15 sowie dem 90°-Krümmer des Rohrschiebers
16 ist nach hinten in Richtung auf die Rückwand 5 des Füllbehälters
2 und die dahinterliegenden Förderzylinder 34, 35 um ca. 30°
geneigt. Dadurch weisen der Eintrittsschenkel 17 und das ihn
umschließende Kanalgehäuse 24 nach unten. Unter der Öffnung
des Kanalgehäuses in den Füllbehälter 2 ergibt sich hieraus eine
Schurre 47, auf die der Beton vor die Förderzylinderöffnungen 45
und 46 gefördert wird.The L-shaped unit from the entry leg 17 and the
Der Rohrschieber 16 schwingt im Takt der gegenläufigen Kolben
36 und 37 vor die Förderzylinderöffnungen des jeweils ansaugenden
Kolbens 37 um die Längsachse seines Austrittsschenkels 15
in dem Lager 20 und dem Rohrdrehgelenk 18 der Förderleitung
19. Der Rohrschieber ist zusätzlich mit dem Zapfen 48 seiner
unteren Antriebswelle 40 auf dem Boden der Schurre 47 abgestützt.
Ein unterer Antrieb 41 oder ein oberer Antrieb 42 übertragen
die Bewegungsenergie für den Rohrschieber auf die Welle
40 oder das obere Ende des Austrittsschenkels 15 zwischen dem
Lager 20 und dem Rohrdrehgelenk 18.The
Bauartbedingt sind die Förderzylinder 34, 35 aus der Senkrechten
nach hinten oben geneigt. Die Verbindung zwischen der Neigung
der Schurre 47 und des Kanalgehäuses 24 mit den Förderzylinderenden
stellt das Anschlußgehäuse 31 her, das die Rohrkrümmer
49, 50 aufweist und bei 43 und 44 an das Kanalgehäuse
24 angeschlossen ist.Due to the design, the
Im Betrieb wird der Beton mit Hilfe der unter einem Winkel
angestellten Paddel 12 bis 14 des Rührwerkes von beiden Seiten
des Füllbehälters 2 zur Mitte geschaufelt und gelangt auf der
Schurre 47 vor die Zylinderöffnungen 45 und 46 der jeweils
ansaugenden Förderzylinder 34 und 35. Dadurch steht vor der
jeweiligen Ansaugöffnung ein hydrostatischer Betondruck zur
Verfügung, der die Höhe des Bodens 8 des Füllbehälters 2 übersteigt,
wobei das Rührwerk dafür sorgt, daß stets ausreichend
Beton zur Verfügung steht, um die Bildung von Saugkratern vor
den Öffnungen 45 und 46 zu verhindern. Am Ende des Förderbetriebes
kann der Füllbehälter praktisch leergezogen werden, da
kein Restbeton im Füllbehälter 2 durch die Wirkung der Paddel
verbleibt. In operation, the concrete is placed at an angle
employed
- 11
- DickstoffpumpeSlurry pump
- 22
- FüllbehälterStorage capacities
- 33
- Öffnungopening
- 44
- Vorderwandfront wall
- 55
- Rückwandrear wall
- 66
- SeitenwandSide wall
- 77
- SeitenwandSide wall
- 88th
- Bogenarc
- 99
- Schenkelleg
- 1010
- Schenkelleg
- 1111
- Rührwerkwelleagitator shaft
- 1212
- Rührwerkzeugagitator
- 1313
- Rührwerkzeugagitator
- 1414
- Rührwerkzeugagitator
- 1515
- Austrittsschenkelexit leg
- 1616
- Rohrschiebersleeve valve
- 1717
- Eintrittsschenkelinlet arm
- 1818
- RohrdrehgelenkSwivel Joint
- 1919
- Förderleitungdelivery line
- 2020
- Drehlagerpivot bearing
- 2121
- Traversetraverse
- 2222
- Stützesupport
- 2323
- Stützesupport
- 2424
- Kanalgehäusechannel housing
- 2525
- Öffnungopening
- 2626
- Flanschflange
- 2727
- bogenförmige Rückwandarched rear wall
- 2828
- Brillenplattespectacle plate
- 2929
- Schneidring cutting ring
- 3030
- Dichtungpoetry
- 3131
- Anschlußgehäusejunction box
- 3232
- aufgehende Stützerising support
- 3333
- aufgehende Stützerising support
- 3434
- Förderzylinderdelivery cylinders
- 3535
- Förderzylinderdelivery cylinders
- 3636
- Kolbenpiston
- 3737
- Kolbenpiston
- 3838
- Rohrstutzenpipe socket
- 3939
- Rohrstutzenpipe socket
- 4040
- Antriebswelledrive shaft
- 4141
- Schwingantrieboscillating drive
- 4242
- Schwingantrieboscillating drive
- 4343
- Flanschflange
- 4444
- Flanschflange
- 4545
- FörderzylinderöffnungConveying cylinder opening
- 4646
- FörderzylinderöffnungConveying cylinder opening
- 4747
- Schurrechute
- 4848
- Zapfenspigot
- 4949
- Rohrkrümmerelbow
- 5050
- Rohrkrümmerelbow
Claims (7)
- Two-cylinder slurry (1) including a filling tank (2) for receiving slurry, an agitator, whose shaft (11) is situated in the filling tank (2), and a pivotal sleeve valve (16), which is disposed in the filling tank (2), for controlling the alternating suction and delivery phases of the delivery cylinders and a pivotal inlet limb (17) in front of the inlet openings of the delivery cylinders (34, 35) and an outlet limb rotatably connected to the delivery conduit (19), whereby the inlet openings (46, 45) of the delivery cylinders (34, 35) are disposed behind the rear wall (5) of the filling tank (2) and the outlet limb (15) is disposed between the agitator shaft (11) and the rear wall (5) on the latter and the inlet and outlet limbs of the sleeve valve (16) define an approximately right-angled, L-shaped overall arrangement, characterised in that the central axis of the outlet limb (15) is inclined to the vertical in the direction towards the rear wall (5) of the filling tank (2) so that the inlet limb (17) of the L-shaped unit points downwardly.
- Two-cylinder slurry pump as claimed in claim 1, characterised in that the central axis of the outlet (15) is inclined by 30° to the vertical in the direction toward the rear wall (5) of the filling tank (2).
- Two-cylinder slurry pump as claimed in claim 1 or claim 2, characterised in that the sleeve valve is mounted at the top on the outer surface of the rear wall (27) of the filling tank (2) and at the bottom, in an extension of its outlet limb (15) on the base of a chute (47), which serves as a connection to the delivery cylinder openings (45, 46).
- Two-cylinder slurry pump as claimed one or more of the preceding claims, characterised in that adjoining the filling tank (2) there is a passage housing (24), which is closed with the exception of an opening into the filling tank (2) and encloses at least the front end of the inlet limb (17) of the sleeve valve (16).
- Two-cylinder slurry pump as claimed in one or more of the preceding claims, characterised in that the passage housing (24) has sockets (38, 39), which are so constructed and arranged that the lateral spacing of the delivery cylinder openings (46, 45) is less than that of the delivery cylinders (34, 35).
- Two-cylinder slurry pump as claimed in one or more of the preceding claims, characterised in that provided between the sockets (38, 39) of the passage housing (24) and the delivery cylinders (34, 35) there is a connection housing (31), which defines a transition curvature from the downwardly directed inclination of the chute (47) and/or of the passage housing (24) into the direction of the delivery cylinder (34, 35).
- Two-cylinder slurry pump as claimed in one or more of the preceding claims, characterised in that the pin (48) of the lower rotary bearing or the outlet limb (15) of the sleeve valve (16) between the rotary joint (18) and the delivery conduit (19) serve as drive shafts of the sleeve valve (16).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19724504A DE19724504A1 (en) | 1997-06-11 | 1997-06-11 | Two-cylinder nitrogen pump |
| DE19724504 | 1997-06-11 | ||
| PCT/EP1998/003459 WO1998057063A1 (en) | 1997-06-11 | 1998-06-09 | Two-cylinder thick matter pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0988450A1 EP0988450A1 (en) | 2000-03-29 |
| EP0988450B1 true EP0988450B1 (en) | 2002-09-11 |
Family
ID=7832075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98933598A Expired - Lifetime EP0988450B1 (en) | 1997-06-11 | 1998-06-09 | Two-cylinder thick matter pump |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6206662B1 (en) |
| EP (1) | EP0988450B1 (en) |
| JP (1) | JP4041169B2 (en) |
| KR (1) | KR100550236B1 (en) |
| CN (1) | CN1104559C (en) |
| AT (1) | ATE224008T1 (en) |
| AU (1) | AU729302B2 (en) |
| BR (1) | BR9810111A (en) |
| CA (1) | CA2293748C (en) |
| DE (2) | DE19724504A1 (en) |
| ES (1) | ES2183392T3 (en) |
| HK (1) | HK1023388A1 (en) |
| RU (1) | RU2179262C2 (en) |
| TR (1) | TR199903049T2 (en) |
| WO (1) | WO1998057063A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10155787A1 (en) * | 2001-11-14 | 2003-05-22 | Putzmeister Ag | Material feed container for two-cylinder thick matter pumps |
| US6857861B2 (en) * | 2002-05-15 | 2005-02-22 | Kennametal Inc. | Ring for concrete pump |
| GB2416569A (en) | 2004-07-27 | 2006-02-01 | Clarke Uk Ltd | Method of and a pump for pumping drill cuttings |
| US7513758B2 (en) * | 2005-11-08 | 2009-04-07 | Good Earth Tools, Inc. | Sealing rings for abrasive slurry pumps |
| DE102009005318B3 (en) * | 2009-01-16 | 2010-09-30 | Schwing, Friedrich, Dipl.-Ing. | Process for conveying mushy masses and pumping device for conveying mushy masses |
| DE102013208101A1 (en) * | 2013-05-03 | 2014-11-20 | Putzmeister Engineering Gmbh | Container for absorbing thick matter |
| CN103967736B (en) * | 2014-05-12 | 2016-02-24 | 黄恩权 | Four cylinder H-shaped valve concrete pumps |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3682575A (en) * | 1970-12-10 | 1972-08-08 | Karl Guddal | Concrete pump |
| DE2162406C3 (en) * | 1971-12-16 | 1979-03-01 | Karl Dipl.-Ing. 7024 Bernhausen Schlecht | Slider device for a pump with two cylinders working in push-pull for pumping concrete or the like |
| GB1397778A (en) * | 1972-08-09 | 1975-06-18 | Winget Ltd | Slurry pumps |
| DE2315857B2 (en) * | 1973-03-30 | 1975-02-13 | Friedrich Dipl.-Ing. 4680 Wanne-Eickel Schwing | Pump for pumping pasty masses, especially concrete and mortar |
| DE2903749C2 (en) * | 1979-02-01 | 1983-11-10 | Karl Dipl.-Ing. 7000 Stuttgart Schlecht | Piston pump with an S-shaped swivel tube |
| DE2909132A1 (en) * | 1979-03-08 | 1980-09-11 | Stetter Gmbh | Two cylinder reciprocating concrete pump - has linkage lifting swivel pipe as it rotates to reduce wear on end of pipe |
| US4337017A (en) * | 1979-09-26 | 1982-06-29 | Evenson William R | Hydraulic sleeve valve and seal arrangement for piston pump |
| GB2090924B (en) * | 1980-12-05 | 1984-03-28 | Elba Werk Maschinen Gmbh & Co | Apparatus for conveying materials in particular concrete |
| AU540469B2 (en) * | 1981-06-10 | 1984-11-22 | Niigata Engineering Co., Ltd. | Valve unit for use in concrete pumps |
| JPS5815772A (en) * | 1981-07-22 | 1983-01-29 | Ishikawajima Harima Heavy Ind Co Ltd | Concrete pump |
| EP0085521B2 (en) * | 1982-01-22 | 1991-11-13 | Hydroseal Concrete Pumps Limited | Slurry pump |
| US5061158A (en) * | 1988-03-30 | 1991-10-29 | Aliva Aktiengesellschaft | Multi-cylinder piston pump |
| US5281113A (en) * | 1990-11-16 | 1994-01-25 | Friedrich Wilh, Schwing Gmbh | Thick materials pump with paired, preferably parallel feed cylinders which alternatingly deliver and intake |
| US5180294A (en) * | 1992-03-04 | 1993-01-19 | Confloat Consulting Ltd. | Concrete pump having pressurized seal for swing tube |
| DE4209471A1 (en) * | 1992-03-24 | 1993-09-30 | Schwing Gmbh F | Thick matter pump for feed cylinders, especially two-cylinder concrete pumps |
| JP3578361B2 (en) * | 1994-11-24 | 2004-10-20 | 大平洋機工株式会社 | Channel switching device for reciprocating double row pump |
| JPH0960579A (en) * | 1995-08-25 | 1997-03-04 | Furukawa Co Ltd | Bearing mechanism of oscillating pipe of piston pump |
-
1997
- 1997-06-11 DE DE19724504A patent/DE19724504A1/en not_active Withdrawn
-
1998
- 1998-06-09 AU AU83364/98A patent/AU729302B2/en not_active Ceased
- 1998-06-09 US US09/445,781 patent/US6206662B1/en not_active Expired - Fee Related
- 1998-06-09 CN CN98806083A patent/CN1104559C/en not_active Expired - Fee Related
- 1998-06-09 BR BR9810111-0A patent/BR9810111A/en not_active IP Right Cessation
- 1998-06-09 JP JP50157799A patent/JP4041169B2/en not_active Expired - Fee Related
- 1998-06-09 CA CA002293748A patent/CA2293748C/en not_active Expired - Fee Related
- 1998-06-09 KR KR1019997011684A patent/KR100550236B1/en not_active IP Right Cessation
- 1998-06-09 ES ES98933598T patent/ES2183392T3/en not_active Expired - Lifetime
- 1998-06-09 AT AT98933598T patent/ATE224008T1/en not_active IP Right Cessation
- 1998-06-09 RU RU2000100979/06A patent/RU2179262C2/en not_active IP Right Cessation
- 1998-06-09 DE DE59805521T patent/DE59805521D1/en not_active Expired - Fee Related
- 1998-06-09 TR TR1999/03049T patent/TR199903049T2/en unknown
- 1998-06-09 EP EP98933598A patent/EP0988450B1/en not_active Expired - Lifetime
- 1998-06-09 WO PCT/EP1998/003459 patent/WO1998057063A1/en not_active Application Discontinuation
-
2000
- 2000-04-18 HK HK00102307A patent/HK1023388A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998057063A1 (en) | 1998-12-17 |
| TR199903049T2 (en) | 2000-03-21 |
| KR100550236B1 (en) | 2006-02-08 |
| JP4041169B2 (en) | 2008-01-30 |
| BR9810111A (en) | 2002-05-21 |
| CN1260029A (en) | 2000-07-12 |
| AU8336498A (en) | 1998-12-30 |
| HK1023388A1 (en) | 2000-09-08 |
| KR20010013672A (en) | 2001-02-26 |
| DE19724504A1 (en) | 1998-12-17 |
| RU2179262C2 (en) | 2002-02-10 |
| JP2002511125A (en) | 2002-04-09 |
| ES2183392T3 (en) | 2003-03-16 |
| AU729302B2 (en) | 2001-02-01 |
| EP0988450A1 (en) | 2000-03-29 |
| CA2293748A1 (en) | 1998-12-17 |
| CA2293748C (en) | 2007-07-24 |
| CN1104559C (en) | 2003-04-02 |
| ATE224008T1 (en) | 2002-09-15 |
| US6206662B1 (en) | 2001-03-27 |
| DE59805521D1 (en) | 2002-10-17 |
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