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WO2007147586A1 - Pompe pour matières épaisses à deux cylindres présentant deux tubes de distribution - Google Patents

Pompe pour matières épaisses à deux cylindres présentant deux tubes de distribution Download PDF

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Publication number
WO2007147586A1
WO2007147586A1 PCT/EP2007/005447 EP2007005447W WO2007147586A1 WO 2007147586 A1 WO2007147586 A1 WO 2007147586A1 EP 2007005447 W EP2007005447 W EP 2007005447W WO 2007147586 A1 WO2007147586 A1 WO 2007147586A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
delivery
pump according
diverters
slurry pump
Prior art date
Application number
PCT/EP2007/005447
Other languages
German (de)
English (en)
Inventor
Reinhold Erner
Volker Beissner
Original Assignee
Schwing 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 Schwing Gmbh filed Critical Schwing Gmbh
Publication of WO2007147586A1 publication Critical patent/WO2007147586A1/fr

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
    • 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
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0011—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having an oscillating movement

Definitions

  • the invention relates to a two-cylinder slurry pump according to the preamble of claim 1.
  • piping systems In order to be able to convey thick materials, for example concrete, over height and length differences, so-called piping systems are used which are fastened, for example, to a mast boom. Such mast booms are stationary or mounted for mobile use on trucks, rail vehicles and ships.
  • corresponding pumping devices In order to be able to convey the thick matter through the piping system, corresponding pumping devices, so-called thick matter feed pumps, are required. Such pumping devices are well known in the prior art.
  • such a thick matter feed pump comprises at least one delivery cylinder, which sucks the thick matter, for example, from a storage container in the suction stroke and virtually presses the absorbed thick material into the pipeline system in the opposite delivery stroke.
  • the delivery cylinder must be alternately connected to the reservoir and the delivery line system, for which appropriate switches are used.
  • Known turnout systems are flat slide, poppet valves and diverter valves (also referred to as swivel tubes) in different configurations.
  • the sludge pumps of the type described above generally have two delivery cylinders, which suck in the thick matter in push-pull and eject into the delivery line system. Such two-cylinder thick matter pumps are now operated almost exclusively with pipe softening systems.
  • Such a two-cylinder sludge pump with diverter shows, for example, the generic patent DE 29 09 964 C2.
  • the thick matter pump described therein has a filling container, attach to the two delivery cylinders and sucked in push-pull thick matter from this.
  • the two delivery cylinders are each connected by means of a diverter valve with the delivery line system, wherein the two diverter valves are arranged within the filling container and pivotally attached to the container wall with their delivery line ends.
  • Such two-cylinder thick matter pumps with two diverter valves have been increasingly replaced in recent years by the advanced systems with only one diverter valve. These have the advantage of a lower overall weight, but also a reduced production engineering and control engineering effort.
  • Such two-cylinder thick matter pumps are described, for example, in the patents DE-OS 29 03 749 and DE 26 11 944 A.
  • the invention is therefore based on the object to provide a two-cylinder slurry pump which produces a more continuous flow and which is also suitable for mass production.
  • the two diverters each have kidney-shaped end faces at their ends on the delivery line side, with blocking surfaces and exit cross sections integrated therein. With these restricted areas can be close the corresponding pressure opening in the wall of Vorhell capableers to the pipe system out with only a small swing stroke of the pipe switch, or vice versa reopen. Due to the low swing stroke very short switching times and very precise switching operations are possible.
  • the respective integrated blocking surface allows a reliable, low-wear and thus low-maintenance closure possibility for the pressure openings, resulting in a robust and suitable for continuous operation construction of erf Dickndungsdorfen sludge pump.
  • Such kidney-shaped end faces with integrated blocking surfaces are already known in a similar design, the use of such a technology for a thick matter pump of the type according to the invention not previously considered by experts and synergetic effects remained unexplored.
  • kidney-shaped in the sense of the patent application refers to the outer contour of a cross-sectional area (relative to a vertical section) or an end face of the tube diverters.
  • Another advantage of the invention is that the two pipe switches are independently operable. Due to the individual control option for both diverter valves, it is possible for one of the two delivery cylinders to begin their delivery stroke before the other cylinder has finished its delivery stroke (so-called stroke overlay), so that both delivery cylinders together promote the thick material into the delivery line system, at least for a brief moment and thus, despite completion of the delivery stroke of the other cylinder, a nearly continuous, d. H. pullsationsokoer and uninterrupted flow rate is maintained.
  • the two individual pipe switches considered in each case have a significantly lower vibration mass, which causes less severe vibrations and which is also easier to handle control technology.
  • the switching process designed so much more sensitive.
  • the diverters are fan-shaped or rock-shaped, ie, their cross-sectional areas increase more or less continuously from the cylinder-side end to the delivery-line end. This ensures that the diverters, despite their large kidney-shaped end faces at the delivery line ends, not disproportionate space, eg. In Vorhell capableer take. In addition, weight is saved.
  • the two diverters are rigidly arranged on each of a shaft, wherein these two waves extend through the Vorhell considereder and are preferably also mounted on this.
  • both ends of the pipe switches are thus moved translationally to the inlet or outlet openings of the prefilling container.
  • Another advantage of this embodiment is that the actuation forces required for pivoting are no longer directly introduced into the diverter valves, as is conventional in the past, for example by a lever of the pivoting mechanism acting directly on the diverter, but only indirectly via the shafts. This results in significantly lower loads for the diverter valves which also lead to significantly lower deformations derselbigen, which especially increases the life of the face seals (so-called. Cutting rings).
  • the diverters and the shafts are made as separate parts and mounted to each other, to which the diverters have at least two and preferably exactly two steering arms.
  • the steering arms are preferably formed integrally with the pivot tubes, but may also be provided as separate parts. It is also possible to integrate the pivot arms in the tube switches, without departing from the basic idea of the Schwenkarmkars.
  • the attachment of the pivot arms to the waves is done by a positive connection such as a wedge connection, on the forces and moments can be transferred very well and a connection maintaining the screw.
  • suitable fastening devices may be provided, such as. Welded connections.
  • a one-piece design of the waves with the pivot arms is possible, as well as the shaft, steering arms and pipe switch comprehensive integral training.
  • the steering levers of the diverters have different lengths. It is provided here that the shorter steering lever is arranged at the delivery line end and the longer steering lever is arranged at the cylinder-side end of a transfer tube. This results in a particularly advantageous torque compensation.
  • the resulting frictional force at the delivery line end due to the larger contact surface due to the kidney shape) is greater than at the cylinder-side end with the smaller contact surface.
  • the shorter steering lever and thus the shorter lever arm and the smaller cylinder-side end of the longer steering lever with the longer lever arm is arranged on the larger friction surface, ie on the kidney-shaped conveying line end of the pipe switch, so that the moment effect as a result of the resulting Frictional forces at both ends of the pipe switch is about the same and thus no tilting moment is caused (so-called torque compensation).
  • torque compensation the moment effect as a result of the resulting Frictional forces at both ends of the pipe switch is about the same and thus no tilting moment is caused.
  • the shafts are supported on a respective front end wall and a rear end wall of the prefill container so as to extend therethrough.
  • the bearing seats of the waves can be very well finished and reworked.
  • the prefill container has at its rear end wall two approximately circular inlet openings, through which the delivery cylinders open into the prefill container, and which are also referred to as suction openings.
  • An opposite front end wall likewise has two approximately circular so-called outlet openings, on which the two outgoing delivery lines begin, which are also referred to as pressure openings.
  • the method for operating such a two-cylinder thick matter pump provides that the two diverters are mechanically driven or actuated independently of each other in order to connect a respective delivery cylinder with one conveyor line intermittently (or temporarily).
  • each one of the two delivery cylinder begins its delivery stroke before the other cylinder has finished its delivery stroke (so-called Hubbergerlagerung), whereby the corresponding diverter valve is brought into a winning legisha so that both delivery cylinders together at least temporarily convey the thick matter into the delivery line system.
  • the movement of the delivery pistons in the delivery cylinders with each other and preferably also the movement of the diverter valves is coordinated with one another and in particular also with respect to the delivery pistons, for which purpose suitable regulating, control or signaling devices (eg, buttons) are provided.
  • the application of force to the lever or connecting rod mechanism for the rotational drive of the shafts is advantageously carried out by hydraulic, in particular double-acting, actuating cylinders.
  • FIG. 1 shows a two-cylinder concrete pump according to the invention in a perspective view.
  • FIG. 2b shows the diverter valve of Figure 2a in a perspective view overlooking the cylinder-side end ..
  • FIG. 3a shows the control system of the two-cylinder concrete pump according to FIG. 1 in a front view, wherein the diverters are in a first position
  • FIG. FIG. 3b shows the control system of the two-cylinder concrete pump according to FIG. 1 in a front view, wherein the diverters are in a second position
  • FIG. 3c shows the control system of the two-cylinder concrete pump according to FIG. 1 in a front view, wherein the diverters are in a third position
  • FIG. FIG. 4a shows the control system of the two-cylinder concrete pump according to FIG. 1 in a plan view, wherein the diverter valves according to FIG.
  • FIG. 3a are in a first position
  • FIG. FIG. 4b shows the control system of the two-cylinder concrete pump according to FIG. 1 in a plan view, wherein the diverters according to FIG. 3b are in a second position
  • FIG. FIG. 4c shows the control system of the two-cylinder concrete pump according to FIG. 1 in a plan view, wherein the diverter valves according to FIG. 3c are in a third position
  • Fig. 1 shows a generally designated 1 two-cylinder concrete pump in a perspective view.
  • the concrete pump 1 comprises a control system, generally designated 2, which is arranged substantially in a housing 3 designed as a prefill container.
  • the housing comprises a front and a rear end wall 4 and 5 and is open to the concrete receptacle upwards.
  • the cylinder chambers by appropriate respectivelysl. Suction openings 6a and 6b open into the prefilling container 3.
  • the two diverters 8a and 8b are mirror-symmetrical, but this need not necessarily be the case.
  • the diverters 8 a and 8 b are double-cranked and thus quasi S-shaped along the course of the current.
  • the diverters 8a and 8b are fan-shaped, ie they have along the flow path, ie from their cylinder-side ends toward the delivery line ends, increasing cross-sectional areas, which is why they are also referred to as fan shifter.
  • each of the two diverter valves 8a and 8b has approximately circular end faces with approximately circular inlet cross-sections 13 (see Fig.
  • the diverters 8a and 8b have arranged at their end faces seals, so-called. Cutting rings.
  • the arranged at the delivery line ends of the diverter 8a and 8b cutting rings 17 are kidney-shaped and, as can be seen from Fig. 2a, secured in correspondingly prepared grooves 18.
  • the cutting rings are substantially annular in shape and, as is apparent in particular from FIG. 2b, secured in corresponding recesses.
  • the two diverters 8a and 8b between the two end faces or walls 4 and 5 inside the Vor Strukturll mattersers 3 (which is also referred to as a slide housing) rotatably or pivotally mounted. That the two diverters 8a and 8b can perform a pivoting movement about their respective drive shaft 9a and 9b, and thereby assume different working positions or switching positions.
  • the pipe switch 8a belonging to the delivery cylinder A is in the conveying operating position
  • the transfer tube 8 belonging to the transfer tube 8b is in the suction operating position.
  • the diverters 8a and 8b each have two, in this case, different, long, steering levers 20 with which they are respectively attached to the shafts 9a and 9b.
  • a wedge-shaped form-locking connection is provided, wherein the attachment is effected by a screw connection, for which the steering lever 20 are provided with at least one threaded hole.
  • FIGS. 3 a to 3 c show the prefill container 3 in a front view with a view of the front end wall 4, which is shown partially transparent.
  • the two pressure ports 7a and 7b which provide a provide binding from the interior of the prefill container 3 to two outgoing feed lines (not shown).
  • the two outgoing delivery lines are summarized downstream by, for example, a Y- or downpipe to a single delivery line or are already designed as parts of a manifold.
  • the suction ports 6a and 6b on the rear end wall 5 through which the cylinder chambers of the delivery cylinders A and B are connected to the interior of Vorhell mattersers 3, and the elastically formed, annular seals 12th
  • the position of the diverters 8a and 8b in FIG. 3a corresponds to that of FIG. 1.
  • the delivery cylinder A more precisely the delivery piston in the delivery cylinder A, is in the delivery or compression stroke.
  • the concrete contained in the cylinder space of the delivery cylinder A is forced through the suction opening 6a, the pipe switch 8a and the pressure port 7a into the outgoing delivery line.
  • the delivery volume flow of the concrete is deflected by the S-shaped flow path of the pipe switch 8a quasi between the front and the rear end wall 4 and 5.
  • the pressure-side outlet cross section 16 of the kidney-shaped delivery line-side end of the diverter 8a is located during the delivery stroke of the cylinder A in register with the pressure port 7a in the front end wall 4.
  • the diverter 8a is thus therefore in the conveying mode position.
  • the pipe switch 8b belonging to the delivery cylinder B is in the suction mode position.
  • it assumes a pivotal position, in which the suction cylinder 6 b associated with the suction opening 6 b is released in the rear end wall 5, ie the delivery cylinder B is directly connected to the interior of Vorhell mattersers 3 in which there is the concrete to be pumped.
  • this concrete sucks from the Vor Stahlier 3 in its cylinder chamber.
  • the locking surface 15 of the kidney-shaped delivery line end of the pipe switch 8b, the pressure port 7b in the front end wall 4 of the Vorphilll matterers are closes in this pivot position.
  • the diverter 8b belonging to the delivery cylinder B also pivots in the conveying position.
  • the cutting ring arranged at the cylinder-side end of the pipe switch 8b quasi shears off the volume flow into the delivery cylinder B.
  • the delivery cylinder B begins with its print or Delivery stroke, whereby the concrete contained in its cylinder chamber is pressed through the suction port 6b, the diverter 8b and the pressure port 7b into the outgoing feed line. Accordingly, when the delivery cylinder A has completed its pressure stroke, the delivery cylinder B is already in the pressure stroke, thus producing a delivery volume flow which is continuous, that is, interruption-free and pulsation-free, departing from the concrete pump.
  • the associated diverter 8a pivots to the position suction mode.
  • the blocking surface 15 of the kidney-shaped delivery line-side end of the diverter 8a is pushed in front of the pressure opening 7a and thus in turn prevents a volume return flow from the outgoing delivery line system.
  • the cylinder-side end of the pipe switch 8a is moved away from the suction opening 6a in the rear end wall 5, so that a direct connection of the delivery cylinder A to the interior of the prefilling container 3 is released.
  • This position of the two diverter valves is shown in FIG. 3c.
  • the delivery cylinder A begins now with its suction stroke, is sucked in the concrete from the interior of Vorhell anyers 3.
  • the suction stroke is carried out faster than the delivery stroke of the other delivery cylinder B, so that the delivery cylinder A can already change back into the delivery stroke before the delivery cylinder B ends his delivery.
  • FIGS. 4a to 4c show the control system 2 in a view from above.
  • Figs. 4a and 4c can be seen how is created by the pivoting of the diverters 8a and 8b in the position suction operation (8b in Fig. 4a and 8a in Fig. 4c) between this place, through which the from above into the Vor colll capableer 3 inflowing concrete without deflection to the suction ports 6a and 6b can reach in the rear end wall 5 of the housing.
  • This effect is favored by the fan shape of the tube switches still. This advantageously increases the achievable degree of filling of the delivery cylinders A and B.
  • a suitable control of the delivery cylinders A and B and the diverters 8a and 8b is provided for the delivery operation of the type described above.
  • the strokes of the pistons in the delivery cylinders A and B are matched.
  • the adjusting movement of the two diverters 8a and 8b can thus be coordinated.
  • an electrical, hydraulic or pneumatic control is provided, or combinations thereof.
  • means for detecting the piston position in the delivery cylinders A and B are provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe pour matières épaisses, en particulier pour le transport du béton, comprenant un premier (A) et un second (B) cylindres de transport qui débouchent dans un réservoir de pré-remplissage (3), et deux tubes de distribution pivotants (8a, 8b), de préférence incurvés en forme générale de 'S', qui sont disposés dans le réservoir de pré-remplissage (3) et qui connectent de manière périodique, respectivement, un cylindre de transport (A, B) avec, respectivement, un conduit de transport, les deux tubes de distribution (8a, 8b) présentant chacun une extrémité côté cylindre et une extrémité côté conduit de transport. L'invention est caractérisée en ce que chacun des deux tubes de distribution présente à son extrémité côté conduit de transport, une face frontale réniforme (14), ladite face frontale comprenant une face de blocage intégrée (15) et une sortie qui est sensiblement circulaire en coupe transversale.
PCT/EP2007/005447 2006-06-20 2007-06-20 Pompe pour matières épaisses à deux cylindres présentant deux tubes de distribution WO2007147586A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610028329 DE102006028329A1 (de) 2006-06-20 2006-06-20 Zweizylinder-Dickstoffpumpe mit zwei Rohrweichen
DE102006028329.5 2006-06-20

Publications (1)

Publication Number Publication Date
WO2007147586A1 true WO2007147586A1 (fr) 2007-12-27

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ID=38721017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/005447 WO2007147586A1 (fr) 2006-06-20 2007-06-20 Pompe pour matières épaisses à deux cylindres présentant deux tubes de distribution

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DE (1) DE102006028329A1 (fr)
WO (1) WO2007147586A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590996A (zh) * 2013-11-22 2014-02-19 中联重科股份有限公司 泵送设备及泵送方法
US9352914B2 (en) 2014-04-16 2016-05-31 Ngoc Minh Le Pneumatic tube carrier system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619719B (zh) * 2012-04-25 2014-12-10 中联重科股份有限公司 泵送分配机构、泵送装置及其控制方法、混凝土泵车

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063020A (en) * 1963-11-08 1967-03-22 Eugene Lee Sherrod Reciprocating pump for semi-iiquid materials
DE2909964A1 (de) * 1979-03-14 1980-09-25 Schwing Gmbh F Dickstoffpumpe, insbesondere fuer beton
EP0315750A1 (fr) * 1987-11-12 1989-05-17 Putzmeister-Werk Maschinenfabrik Gmbh Pompe pour matière épaisse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063020A (en) * 1963-11-08 1967-03-22 Eugene Lee Sherrod Reciprocating pump for semi-iiquid materials
DE2909964A1 (de) * 1979-03-14 1980-09-25 Schwing Gmbh F Dickstoffpumpe, insbesondere fuer beton
EP0315750A1 (fr) * 1987-11-12 1989-05-17 Putzmeister-Werk Maschinenfabrik Gmbh Pompe pour matière épaisse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590996A (zh) * 2013-11-22 2014-02-19 中联重科股份有限公司 泵送设备及泵送方法
US9352914B2 (en) 2014-04-16 2016-05-31 Ngoc Minh Le Pneumatic tube carrier system and method

Also Published As

Publication number Publication date
DE102006028329A1 (de) 2007-12-27

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