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WO1998011346A1 - Pompes a liquides epais - Google Patents

Pompes a liquides epais Download PDF

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Publication number
WO1998011346A1
WO1998011346A1 PCT/EP1997/003948 EP9703948W WO9811346A1 WO 1998011346 A1 WO1998011346 A1 WO 1998011346A1 EP 9703948 W EP9703948 W EP 9703948W WO 9811346 A1 WO9811346 A1 WO 9811346A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
pump according
rib
feed
pipe
Prior art date
Application number
PCT/EP1997/003948
Other languages
German (de)
English (en)
Inventor
Hans Renz
Hellmut Hurr
Original Assignee
Putzmeister Aktiengesellschaft
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 Aktiengesellschaft filed Critical Putzmeister Aktiengesellschaft
Priority to JP51318198A priority Critical patent/JP2001508516A/ja
Priority to EP97936648A priority patent/EP0925450B1/fr
Priority to DE59707070T priority patent/DE59707070D1/de
Publication of WO1998011346A1 publication Critical patent/WO1998011346A1/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
    • 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
    • F04B7/0034—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 an orbital movement, e.g. elbow-pipe type members

Definitions

  • the invention relates to a thick matter pump with a material feed container, two conveying cylinders opening with their front openings into the interior of the material feed container and an engaging in the material feed container, with its one end carrying an axially displaceable wear ring alternating with the end openings of the feed cylinders and communicating with it the other end connected to a conveyor tube S-shaped swivel tube, which can be pivoted about a horizontal axis which is concentric with the end of the conveyor tube and is arranged above the conveyor cylinder, with a downward-pointing, essentially extending over the length of the pivot tube and up to the vicinity of the pivot tube on the pivot tube Clearing rib reaching the bottom of the container is formed,
  • the material to be conveyed is sucked into the cylinder from the material feed container during the backward stroke of the piston of the one feed cylinder, while with the simultaneous forward stroke of the piston of the other feed cylinder, the material to be sucked in beforehand is pressed through the swivel tube into the delivery line.
  • the wear ring arranged on the swivel pipe ensures that the swivel pipe is pressed tightly against the glasses-shaped wear plate which delimits openings of the conveying cylinders in order to prevent liquid or fine-grained components of the conveyed goods from escaping from the conveyed goods at this point.
  • the wear ring is constructed in such a way that it is pressed against the wear plate under the action of the delivery pressure during the pressure stroke. Due to the wear occurring when the swivel tube is switched over on the wear ring and on the spectacle-shaped wear plate, the swivel tube has to be readjusted from time to time by axial displacement within the material feed container. For this purpose, an adjustment screw accessible from the outside is arranged in the area of the swivel tube bearing. Due to the S-shaped curvature of the swivel tube, depending on the construction, there are more or less large dead spaces within the material feed container, in which thick material can accumulate. It is therefore important that after each pumping process the material feed container is emptied and cleaned thoroughly. In order to keep the dead spaces small, it has already been proposed to adapt the material feed container to the S-shaped course of the swivel tube, especially in the base area. However, this requires considerable construction effort.
  • the invention has for its object to improve the known thick matter pump of the type mentioned in such a way that a reliable seal between the swivel tube and delivery cylinders is ensured during the pressure stroke
  • the rib at its end facing away from the wear ring of the swivel tube carries a wear plate that is vertically aligned with the swivel axis and bears against a wear bar arranged on a container wall on the conveyor tube side and preferably axially adjustable relative to this container wall.
  • the wear plate is To this end, it is expediently arranged at the height of the wear ring, while the swivel tube is axially displaceably mounted in a pivot bearing of the rear wall.
  • the wear plate and the associated wear strip form a support bearing, which makes axial limitation in the region of the pivot tube pivot bearing unnecessary, and this ensures that during the pressure stroke Do not apply any tensile or bending forces to the axle shaft. Furthermore, a simple and convenient readjustment of the swivel tube within the material feed container in the wear accumulator is possible without additional assembly work in the area of the switching mechanism.
  • a further improvement in this regard will achieved by that the wear bar is arranged on an arranged in an opening of the conveyor tube-side container wall, sealed against this and with an outside arranged on the container wall adjusting mechanism adjustable.
  • the clearing rib is expediently delimited by broad side surfaces which point in the two swivel directions and are mirror-symmetrical to a radial plane which contains the swivel axis and the wear ring axis. So that the conveyed material located on the bottom can be lifted off the container bottom and mixed with the conveyed material located above during each switching operation, the broad side surfaces of the clearing rib are preferably toward the free bottom rib edge with an increase in the rib wall thickness towards opposite sides, preferably by approximately 90 ', concave curved outwards.
  • the material feed container can have an easily producible, partially cylindrical bottom that is concentric with the pivot axis, while the rib edge facing the container bottom can also have a partially cylindrical, partially cylindrical convex curvature with the pivot axis.
  • FIG. 1 shows a section through the material feed container of a two-cylinder thick matter pump with an S-shaped swivel tube
  • Fig. 2 shows a modified embodiment of a material feed container with an S-tube in a sectional view corresponding to Fig. 1;
  • FIG. 3 shows a section along the section line III-III of FIG. 1.
  • the two-cylinder high-pressure pump shown in sections in the drawing is intended for use in stationary and mobile concrete pumps. It consists essentially of two feed cylinders 10 with push-pull, not shown feed pistons, a material feed container 14 and an S-shaped pivot tube 16 engaging in the material feed container 14, which can be actuated by a U control mechanism 18.
  • the feed cylinders 10 are connected in the lower region 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 lies with its one end, which carries a wear ring 28, against the wear plate 26 and is supported by the reversing Mechanism 18 pivoted in front of one or the other opening 22 depending on the direction of movement of the delivery pistons in the delivery cylinders 10. In this way, material is sucked out of the material feed container 10 through the opening 22 into the relevant feed cylinder 10 when the feed piston is moved back, while material is transported via the other feed piston through the swivel tube 16 into a feed tube 30 located outside the material feed container 14.
  • the delivery pipe 30 can be connected to a delivery line, not shown, of a concrete placing boom.
  • the essentially S-shaped swivel tube is connected at its end 32 opposite the locking ring 28 to the delivery pipe 30 via a container-fixed pipe swivel connection 36 coaxial with its swivel axis 34, while in the case of those shown with FIG. 2 Embodiment, the conveyor tube end 32 of the swivel tube is passed through a simple rotary feedthrough 38 in the relevant container wall 40. In the latter case, an external pivot bearing with an additional pipe swivel joint may be required. In both cases, the container wall 40 can be removed from the material feed container for assembly and disassembly purposes.
  • the swivel tube engages with an axle shaft 42 designed as a drive shaft through a rotary bearing 44 of the material feed container 14
  • the axle shaft 42 is pivoted back and forth to a limited extent on the outside of the material feed container 14 by the reversing mechanism 18 about the pivot axis 34 in the direction of the double arrow 46 (FIG. 3).
  • the bottom 48 of the material feed container 14 is partially cylindrical in shape concentrically over its entire length with respect to the pivot axis 34.
  • a space rib 50 Shaped over the entire length of the swivel tube and extending into the vicinity of the container base 48 is formed a space rib 50, which is delimited by m the two swivel directions pointing in mirror symmetry to a radial plane 54 containing the swivel axis 34 and the wear ring axis 52.
  • the broad side surfaces 56 are for Free bottom edge of the rib 58 hm, increasing the thickness of the rib edge, concavely curved towards the outside on the opposite side and ensure that the material in the area near the bottom is stirred upward with each switching operation.
  • the rib edge 58 facing the container bottom 48 points at the bottom
  • a partially cylindrical convex curvature with the swivel axis 34 so that only a narrow gap 60 remains between the bottom of the container and the edge of the ribs.
  • the space rib 50 also carries a vertically oriented to the swivel axis 34, arranged on the height of the wear ring 28 Wear plate 62, which bears against a wear bar 64 arranged on the container wall 40 and adjustable axially parallel to it.
  • the wear strip is arranged on an adjusting bar which is guided in an opening 66 in the container wall 40, is sealed against it and can be displaced with an adjusting mechanism 68 arranged on the outside of the container wall 40.
  • the wear bar 64 serves as a support bearing for the swivel tube, which eliminates the need for an axial limitation in the area of the swivel tube bearing and avoids tensile and bending loads on the axle shaft 42. In addition, these measures make it easy to readjust the swivel tube in the event of wear in the area of the wear ring 28 and the spectacle-shaped wear plate 26.
  • the invention relates to a thick matter pump, in particular for conveying concrete.
  • the thick matter pump has a material feed container 14, two feed cylinders 10 opening with their end openings 22 into the interior of the material feed container 14 and a feed cylinder 10 which engages in the material feed container 14, one end of which intermittently communicates with the end openings 22 of the feed cylinder 10 and the other end 32 connected to a delivery pipe 30 S-shaped swivel pipe.
  • the swivel tube can be swiveled about a horizontal swivel axis 34 which is concentric with its end 32 on the delivery tube side and is arranged above the delivery cylinder 10.
  • the clearing rib has, at its end facing away from the delivery cylinders 10, a wear plate 64 oriented perpendicular to the pivot axis 34, which abuts against a wear bar 64 arranged on a container wall 40 on the feed pipe side and adjustable axially parallel thereto.

Landscapes

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

Abstract

L'invention concerne une pompe à liquides épais servant notamment à refouler du béton. Cette pompe à liquides épais comporte une cuve d'alimentation en matériau (14), deux cylindres d'alimentation (10) débouchant par leurs ouvertures (22) latérales dans la cuve d'alimentation en matériau (14) et un tuyau pivotant en S, qui entre dans la cuve d'alimentation en matériau (14), communique en alternance de manière cadencée par une de ses extrémités avec les ouvertures (22) latérales des cylindres d'alimentation (10) et est raccordé par son autre extrémité (32) à un tuyau d'alimentation (30). Le tuyau pivotant peut pivoter autour d'un axe de pivotement (34) horizontal, situé au-dessus des cylindres d'alimentation (10) et concentrique à son extrémité (32) côté alimentation. Sur le tuyau pivotant, il est prévu une pièce saillante (50) s'étendant sensiblement sur toute sa longueur pour arriver à proximité du fond (38) de la cuve. La pièce saillante comporte sur sa face opposée aux cylindres d'alimentation (10), une plaque d'usure (62) orientée perpendiculairement à l'axe de pivotement (34), ladite plaque reposant contre une bande d'usure (64) montée sur une paroi (40) de la cuve, côté alimentation, et déplaçable parallèlement à l'axe par rapport à ladite paroi.
PCT/EP1997/003948 1996-09-14 1997-07-22 Pompes a liquides epais WO1998011346A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP51318198A JP2001508516A (ja) 1996-09-14 1997-07-22 濃厚物質用ポンプ
EP97936648A EP0925450B1 (fr) 1996-09-14 1997-07-22 Pompes a liquides epais
DE59707070T DE59707070D1 (de) 1996-09-14 1997-07-22 Dickstoffpumpe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637560 1996-09-14
DE19637560.6 1996-09-14

Publications (1)

Publication Number Publication Date
WO1998011346A1 true WO1998011346A1 (fr) 1998-03-19

Family

ID=7805678

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003948 WO1998011346A1 (fr) 1996-09-14 1997-07-22 Pompes a liquides epais

Country Status (4)

Country Link
EP (1) EP0925450B1 (fr)
JP (1) JP2001508516A (fr)
DE (2) DE59707070D1 (fr)
WO (1) WO1998011346A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033507A1 (fr) * 2003-09-11 2005-04-14 Putzmeister Aktiengesellschaft Systeme a coulisse pour pompe a fluides epais et barre d'usure pour ce systeme

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10155787A1 (de) * 2001-11-14 2003-05-22 Putzmeister Ag Materialaufgabebehälter für Zweizylinder-Dickstoffpumpen
GB2416569A (en) 2004-07-27 2006-02-01 Clarke Uk Ltd Method of and a pump for pumping drill cuttings
DE102007037148B4 (de) 2007-08-07 2011-04-21 Krüger, Holger Verschleißkörper für eine Betonpumpe und Verfahren zur Herstellung eines Verschleißkörpers für eine Betonpumpe
CN103216439B (zh) * 2013-04-03 2015-12-23 三一重工股份有限公司 泵送机构的动密封组件、该动密封组件的检测系统和检测方法
DE102022112508A1 (de) 2022-05-18 2023-11-23 Schwing Gmbh Rohrweichengehäuse für eine Dickstoffpumpe und Dickstoffpumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963385A (en) * 1975-05-05 1976-06-15 Caban Angel M Valve assembly for concrete pumps
DE2632816C2 (de) * 1976-07-21 1982-07-29 Friedrich Wilh. Schwing Gmbh, 4690 Herne Abdichtvorrichtung für eine Doppelzylinderpumpe, insbesondere für die Förderung von Beton
GB2101228A (en) * 1981-06-09 1983-01-12 Scheele Maschf W Apparatus for conveying materials in particular concrete
WO1995030088A1 (fr) * 1994-04-28 1995-11-09 Putzmeister-Werk Maschinenfabrik Gmbh Pompe a matieres epaisses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963385A (en) * 1975-05-05 1976-06-15 Caban Angel M Valve assembly for concrete pumps
DE2632816C2 (de) * 1976-07-21 1982-07-29 Friedrich Wilh. Schwing Gmbh, 4690 Herne Abdichtvorrichtung für eine Doppelzylinderpumpe, insbesondere für die Förderung von Beton
GB2101228A (en) * 1981-06-09 1983-01-12 Scheele Maschf W Apparatus for conveying materials in particular concrete
WO1995030088A1 (fr) * 1994-04-28 1995-11-09 Putzmeister-Werk Maschinenfabrik Gmbh Pompe a matieres epaisses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033507A1 (fr) * 2003-09-11 2005-04-14 Putzmeister Aktiengesellschaft Systeme a coulisse pour pompe a fluides epais et barre d'usure pour ce systeme
CN100400865C (zh) * 2003-09-11 2008-07-09 粉刷师股份公司 用于泥浆泵的滑动装置及其磨损板条

Also Published As

Publication number Publication date
JP2001508516A (ja) 2001-06-26
DE19731335A1 (de) 1998-03-19
EP0925450A1 (fr) 1999-06-30
DE59707070D1 (de) 2002-05-23
EP0925450B1 (fr) 2002-04-17

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