US3726614A - Pump construction - Google Patents

Pump construction Download PDF

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Publication number
US3726614A
US3726614A US00162370A US3726614DA US3726614A US 3726614 A US3726614 A US 3726614A US 00162370 A US00162370 A US 00162370A US 3726614D A US3726614D A US 3726614DA US 3726614 A US3726614 A US 3726614A
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US
United States
Prior art keywords
conduit
inlet
pump
apertures
hopper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00162370A
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English (en)
Inventor
W Schellenberg
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.)
Torkret GmbH
Original Assignee
Torkret 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 Torkret GmbH filed Critical Torkret GmbH
Application granted granted Critical
Publication of US3726614A publication Critical patent/US3726614A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Definitions

  • a substantially S-shaped conduit is located in the hopper and has an outlet opening coaxial and communicating with the inlet, and an inlet opening.
  • a shaft member is fast with the conduit and coaxial with the inlet, the shaft member being mounted for turning movement whereby it effects pivoting of the conduit between two end posi tions in which the inlet opening of the conduit respectively registers with one of the apertures. The pivoting movement is timed so that the inlet opening of the conduit registers with the aperture of that cylinder in which the piston is about to perform its working stroke.
  • the present invention relates generally to a pump construction, and more particularly to a pump for viscous materials, such as concrete in its flowable state.
  • Pumps of the general type here under discussion are of course already known. Generally speaking they use two or more cylinders each of which has a piston reciprocably mounted therein, and a hopper in which the material to be pumped is accommodated and from which it is admitted into the respective cylinders via suitable apertures.
  • a distributor is provided which alternately connects the cylinders with the channel or conduit which is to receive the pumped material from the cylinders.
  • the cylinders operate alternately, meaning that when the piston of one cylinder performs its suction stroke and draws viscous material into the associated cylinder from the hopper, the piston of the other cylinder performs its working stroke and expels material from the associated cylinder into the receiving channel or conduit.
  • the alternate connection of the cylinders with the hopper and the receiving channel is achieved by providing each cylinder with a separate sliding plate which is held and guided by two laterally mounted sliding rods. These extend to the exterior of the pump and are sealed at their ends by suitable sealing arrangements. However, even at a very low degree of wear these rods tend to draw quantities of the material to be pumped to the exterior, that is out of the respective cylinder. These quantities are usually in form of liquid and very fine particles of the material, and the loss of such water is facilitated by the fact that the material in the cylinders is in very high pressure during the operating stroke.
  • the viscous material being pumped is a concrete, that is a mixture of water and cement
  • the loss of matter will disadvantageously influence the composition of the concrete, not to mention the improper pumping operation itself.
  • a rubber lip engages the sliding plate within the housing intermediate the openings for the hopper and the receiving channel, but cannot be adjusted for wear. Because of the structural configuration of this prior-art embodiment a uniform cross-section in the passage to the receiving channel is not possible, and this means that where the cross-section decreases the material must be forced through at high pressure which is. disadvantageous.
  • the sliding plates must be moved at the expenditure of relatively high forces because it is necessary for them to pass through the viscous material which is itself under high pressure.
  • Another embodiment known from the art provides for a distributor in form of a single pivotable flap member which is utilized in a two-cylinder pump. In this construction, however, an even passage for the viscous material cannot be achieved, that is an even flow, and it is also not possible to provide for mechanical adjustments to compensate for wear of the flap member or sealing components associated therewith.
  • a further object of the invention is to provide such an improved pump which has advantageous flow crosssections and which is sealed very tightly.
  • a pump for viscous materials particularly for concrete, which according to one embodiment comprises at least two cylinders each accommodating a reciprocable piston.
  • a receiving channel is adapted to receive material expelled from the respective cylinders and has an inlet.
  • a hopper is adapted to contain viscous material and communicates via two apertures with the respective cylinders.
  • An S-shaped conduit is located in the hopper and has an outlet opening which is coaxial and in axial registry with the inlet, and further has an inlet opening.
  • a shaft member fast with the conduit is coaxial with the inlet and journalled for movement in a sense pivoting the conduit between two end positions in each of which the inlet opening of the conduit registers with one of the apertures.
  • the S-shaped configuration of the conduit assures that over the entire length of the latter at all points there can be provided an approximately identical crosssection, a consideration which is highly advantageous in terms of affording advantageous flow of material. Furthermore, the pivoting of the conduit can be carried out in a very simple and highly effective manner, because the components which must be moved are under no or under very little pressure.
  • the end of the conduit which is provided with the outlet opening is connected with the receiving channel at the inlet thereof by means of a coupling structure which permits not only pivotal but also axial movement of the conduit with reference to the inlet or receiving channel.
  • the shaft member (which is coaxial with the inlet) can be displaced axially of itself whereby the conduit itself can also be displaced axially of the inlet. This means that any play resulting from wear of the components can be readily adjusted.
  • wear rings could be of one piece with one another, but it is advantageous to make them separately to facilitate their replacement individually, because in this manner it is only necessary to pivot the conduit away from the aperture whose ring must be replaced.
  • the wear which occurs on the respective wear rings can be compensated for by adjustment of the conduit via the shaft member to a certain extent, as well as via the pressure tight axially displaceable connection of the conduit with the receiving channel, and when the extent to which compensation can be made is exceeded, the wear ring is replaced.
  • conduit that the general plane of the inlet opening thereof extends in parallelism with the bottom of the hopper, thereby avoiding the danger that larger constituent components of the viscous material might become wedged against the conduit during the pivoting of the latter.
  • FIG. 1 is a fragmentary diagrammatic sectional elevational illustrating one embodiment of the invention
  • FIG. 2 is a detail view in a sectional elevational illustrating the distributor components of the embodiment in FIG. 1;
  • FIG. 3 is a view taken on line III-III of FIG. 1;
  • FIG. 4 is a sectional view on line IV-lV of FIG. 2;
  • FIG. 5 is a view similar to FIG. 1 illustrating a further embodiment of the invention.
  • FIG. 6 is a section taken on line VI-Vl of FIG. 5.
  • reference numerals 1 and 2 identify two cylinders of the novel pump, which extend in parallelism with one another and each of which accommodates a reciprocable piston 3.
  • the pistons 3 in the two cylinders l and 2 move in mutually opposite directions,
  • FIG. 1 only one of the cylinders and one of the pistons is visible but in FIG. 3 the relationship of the cylinders will become clearer.
  • Reference numeral 4 identifies the support or housing via which the cylinders 1 and 2 are connected with a hopper 5 for accommodation of a viscous material, for instance flowable concrete.
  • the viscous material can of course be introduced into the hopper 5 in suitable manner which forms no part of the present invention.
  • Two openings 6 and 7 are provided by means of which the hopper 5 communicates with the housing 4 which in turn leads to the cylinders 1 and 2.
  • a distributor arrangement in form of a substantially S-shaped conduit 8.
  • the inlet opening 9 of the conduit 8 cooperates with the openings 6 and 7, and the outlet opening 10 is coaxial with and associated with the inlet of the receiving channel or pressure conduit 11 which is to receive material expelled from the respective cylinders 1 and 2.
  • Reference numeral 12 identifies a coupling which sealingly connects the outlet 10 with the inlet of the channel or conduit 11, but which permits a pivoting movement of the conduit 8 about the axis of its outlet 10 as well as permitting an axial movement with respect to the inlet of the channel 11.
  • a shaft 13 which is fast with the conduit 8, in the illustrated embodiment by being of one piece therewith.
  • the shaft could also be a separate component which is connected in suitable manner with the conduit 8 so as to be fast therewith.
  • the shaft 13 is journalled in the support 14 for turning movement about its longitudinal axis, and it will be noticed that it is coaxial with the opening 10.
  • the lower end portion of the shaft is provided with an external thread which is in turn engaged by a nut 15 (see FIG. 2) and which passes through the support 14.
  • a slide bearing 16 being interposed between the nut 15 and the support 14.
  • FIG. 4 shows a hydraulic drive 18 which is connected via an arm 19, 19a with a portion 20 of the shaft 13 so that, when the drive 18 is operated, the shaft 13 is turned about its longitudinal axis in order to thereby pivot the shaft and concomitantly the conduit 8 to and fro between the two positions in which the opening 9 of the conduit 8 respectively registers with the openings 6 and 7.
  • the conduit 8 is pivoted to and fro between its two end positions in which its inlet opening 9 respectively registers with the openings 6 and 7.
  • the interior of the conduit 8 is alternately connected with the cylinder 1 and with the cylinder 2, so that the quantity of viscous material accommodated in the respective cylinder and expelled therefrom by the associated piston 3, is expelled through the conduit 8 and into the channel 11, whereas simultaneously the piston 3 of the other cylinder sucks material from the hopper 5 through the associated opening (if the opening 6 communicates with the inlet opening 9, then material will be sucked into the other cylinder via the opening 7, and vice versa).
  • FIGS. 5 and 6 A further embodiment of the invention is illustrated in FIGS. 5 and 6.
  • the substantially S-shaped conduit 8 is again of one piece with the shaft 13, but in addition it is also of one piece with a drum 21.
  • the shaft 13 is mounted and turnable in the same manner as discussed above with respect to the embodiment of FIGS. 1-4.
  • the drum 21 pivots about its longitudinal axis that is connected at its opposite axial ends via seals 22 of suitable construction with the hopper 5 on the one hand and the frame or housing 14 of the pump on the other hand. Pivoting of the drum 21 of course alternately brings the inlet opening 9 of the conduit 8 into communication with the openings 6 or 7 in the end wall of the fragmentarily illustrated support or housing 14, this end wall being identified with reference numeral 20.
  • FIGS. 5 and 6 has the advantage that the curvature of the conduit 8 is flatter than is possible in the embodiment of FIGS. 1-4, and that the hopper 5 can be lower.
  • An additional advantage is the fact that less force is required for pivoting the drum with the conduit 8.
  • the material which is accommodated in the drum is turned along with the latter and must not be displaced in the drum by the moving conduit 8, as would be the case if the conduit 8 were movable relative to the drum.
  • the fact that the seals 22 must be provided is of no importance and any suitable seal can be utilized, because the material in the drum 21 is not under pressure so that no particular forces must be accommodated by these seals.
  • a pump for viscous materials particularly for concrete, in combination, at least two cylinders each accommodating a reciprocable piston; a receiving channel adapted to receive material expelled from the respective cylinders, and having an inlet; a hopper adapted to contain viscous material and communicating via two apertures with the respective cylinders; a curved conduit in said hopper having an outlet opening coaxial and axially registering with said inlet, and an inlet opening; a shaft member fast with said conduit and coaxial with said inlet, said shaft member being journalled for movement in a sense pivoting said conduit between two end positions in each of which said inlet opening registers with one of said apertures; and displacing means for displacing said shaft member in axial direction of the same.
  • said displacing means comprising nut means.
  • said hopper having an open end and a closed end provided with an endwall having said apertures; and wherein the general plane of said inlet opening parallels the general plane of said endwall.
  • a'pump for viscous materials particularly for concrete, in combination, at least two cylinders each accommodating a reciprocable piston; a receiving channel adapted to receive material expelled from the respective cylinders, and having an inlet; a hopper adapted to contain viscous material and communicating via two apertures with the respective cylinders; a curved conduit in said hopper having an outlet opening coaxial and axially registering with said inlet, and an inlet opening, said conduit having an annular surface surrounding said inlet opening; a pair of wear rings each releasably surrounding one of said apertures and adapted for sealing engagement with said annular surface in response to registry of said inlet opening with the respective aperture; and a shaft member fast with said conduit and coaxial with said inlet, said shaft member being journalled for movement in a sense pivoting said conduit between two end positions in each of which said inlet opening registers with one of said apertures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US00162370A 1971-01-29 1971-07-14 Pump construction Expired - Lifetime US3726614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2104191A DE2104191C3 (de) 1971-01-29 1971-01-29 Vorrichtung zur Förderung von breiigen, abbindenden Massen

Publications (1)

Publication Number Publication Date
US3726614A true US3726614A (en) 1973-04-10

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Application Number Title Priority Date Filing Date
US00162370A Expired - Lifetime US3726614A (en) 1971-01-29 1971-07-14 Pump construction

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US (1) US3726614A (de)
JP (1) JPS5210201B1 (de)
DE (1) DE2104191C3 (de)
GB (1) GB1383768A (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832097A (en) * 1971-12-16 1974-08-27 Putzmeister Interholding Gmbh Pump for concrete and other sludging materials
USB351055I5 (de) * 1972-04-18 1975-01-28
US3877847A (en) * 1972-10-05 1975-04-15 Walter Scheele Kg Fa Concrete pump
US3920357A (en) * 1974-03-13 1975-11-18 Case Co J I Pumping apparatus
US3929400A (en) * 1972-08-09 1975-12-30 Winget Ltd Slurry pumps
US3982857A (en) * 1973-10-17 1976-09-28 Karl Schlecht Support means for movable connector in concrete pump arrangement
US3989420A (en) * 1974-05-15 1976-11-02 J. I. Case Company Concrete pumping apparatus
US4106882A (en) * 1975-07-25 1978-08-15 Sherrod Eugene L Positive displacement pump for semi-fluid materials
US4142846A (en) * 1976-10-08 1979-03-06 Niigata Engineering Co., Ltd. Valve means for use in a concrete material pump
US4178142A (en) * 1976-07-21 1979-12-11 Friedrich Wilh. Schwing Gmbh Double-cylinder pump especially for conveying cement
DE3122819A1 (de) * 1981-06-09 1982-12-30 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Lagerung fuer den schwenkarm des verteilers einer betonpumpe
US20030215344A1 (en) * 2002-05-15 2003-11-20 Condon Gary J. Ring for concrete pump
US20100260625A1 (en) * 2007-11-08 2010-10-14 Jambrecina Drago Concrete pump
US20120118412A1 (en) * 2010-11-16 2012-05-17 Charles Ward Barry Centrifugal Pump with Coaxial Inlet and Outlet and Liquid Level Detector
US10900302B2 (en) 2018-07-27 2021-01-26 Country Landscapes & Tree Service, LLC Directional drilling systems, apparatuses, and methods
WO2023222544A1 (de) * 2022-05-18 2023-11-23 Schwing Gmbh Rohrweichengehäuse für eine dickstoffpumpe und dickstoffpumpe

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT995848B (it) * 1973-10-12 1975-11-20 Italiana Forme Acciaio Valvola distributrice a tre vie per pompe a due cilindri per calcestruz zo
DE2933128C2 (de) * 1979-08-16 1985-09-26 Friedrich Wilh. Schwing Gmbh, 4690 Herne Dickstoffpumpe, insbesondere zur Förderung von Beton
DE3122751A1 (de) * 1981-06-09 1983-01-20 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Verteilerrohr fuer betonpumpen mit verschleissausgleich
EP0085521B2 (de) * 1982-01-22 1991-11-13 Hydroseal Concrete Pumps Limited Dickstoffpumpe
DE3240465C2 (de) * 1982-06-25 1986-10-30 WIBAU AG, 6466 Gründau Vorrichtung zur Förderung von breiigen Massen, insbesondere Beton

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR910526A (fr) * 1945-04-27 1946-06-11 Pompe à béton
US3380388A (en) * 1966-02-03 1968-04-30 Robert T Sherrod Automatic control system for concrete pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR910526A (fr) * 1945-04-27 1946-06-11 Pompe à béton
US3380388A (en) * 1966-02-03 1968-04-30 Robert T Sherrod Automatic control system for concrete pump

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832097A (en) * 1971-12-16 1974-08-27 Putzmeister Interholding Gmbh Pump for concrete and other sludging materials
USB351055I5 (de) * 1972-04-18 1975-01-28
US3914074A (en) * 1972-04-18 1975-10-21 Heinz Bille Apparatus for pumping liquid concrete
US3929400A (en) * 1972-08-09 1975-12-30 Winget Ltd Slurry pumps
US3877847A (en) * 1972-10-05 1975-04-15 Walter Scheele Kg Fa Concrete pump
US3982857A (en) * 1973-10-17 1976-09-28 Karl Schlecht Support means for movable connector in concrete pump arrangement
US3920357A (en) * 1974-03-13 1975-11-18 Case Co J I Pumping apparatus
US3989420A (en) * 1974-05-15 1976-11-02 J. I. Case Company Concrete pumping apparatus
US4106882A (en) * 1975-07-25 1978-08-15 Sherrod Eugene L Positive displacement pump for semi-fluid materials
US4178142A (en) * 1976-07-21 1979-12-11 Friedrich Wilh. Schwing Gmbh Double-cylinder pump especially for conveying cement
US4142846A (en) * 1976-10-08 1979-03-06 Niigata Engineering Co., Ltd. Valve means for use in a concrete material pump
DE3122819A1 (de) * 1981-06-09 1982-12-30 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Lagerung fuer den schwenkarm des verteilers einer betonpumpe
US20030215344A1 (en) * 2002-05-15 2003-11-20 Condon Gary J. Ring for concrete pump
US6857861B2 (en) * 2002-05-15 2005-02-22 Kennametal Inc. Ring for concrete pump
US20100260625A1 (en) * 2007-11-08 2010-10-14 Jambrecina Drago Concrete pump
US8439657B2 (en) * 2007-11-08 2013-05-14 Jambrecina Drago Concrete pump
AU2008324712B2 (en) * 2007-11-08 2014-04-10 Drago Jambrecina Improved concrete pump
US20120118412A1 (en) * 2010-11-16 2012-05-17 Charles Ward Barry Centrifugal Pump with Coaxial Inlet and Outlet and Liquid Level Detector
US8657583B2 (en) * 2010-11-16 2014-02-25 Diversitech Corporation Centrifugal pump with coaxial inlet and outlet and liquid level detector
US10900302B2 (en) 2018-07-27 2021-01-26 Country Landscapes & Tree Service, LLC Directional drilling systems, apparatuses, and methods
WO2023222544A1 (de) * 2022-05-18 2023-11-23 Schwing Gmbh Rohrweichengehäuse für eine dickstoffpumpe und dickstoffpumpe

Also Published As

Publication number Publication date
GB1383768A (en) 1974-02-12
DE2104191C3 (de) 1975-10-23
JPS5210201B1 (de) 1977-03-22
DE2104191A1 (de) 1972-08-03
DE2104191B2 (de) 1975-03-13

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