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EP0022851B1 - Pompe a deux cylindres, en particulier pour le pompage de liquides epais - Google Patents

Pompe a deux cylindres, en particulier pour le pompage de liquides epais Download PDF

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Publication number
EP0022851B1
EP0022851B1 EP80900342A EP80900342A EP0022851B1 EP 0022851 B1 EP0022851 B1 EP 0022851B1 EP 80900342 A EP80900342 A EP 80900342A EP 80900342 A EP80900342 A EP 80900342A EP 0022851 B1 EP0022851 B1 EP 0022851B1
Authority
EP
European Patent Office
Prior art keywords
conveying
tube
pump according
rear wall
swivel
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
Application number
EP80900342A
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German (de)
English (en)
Other versions
EP0022851A1 (fr
Inventor
Karl Schlecht
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0022851A1 publication Critical patent/EP0022851A1/fr
Application granted granted Critical
Publication of EP0022851B1 publication Critical patent/EP0022851B1/fr
Expired 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
    • F04B7/0084—Component parts or details specially adapted therefor
    • F04B7/0088—Sealing arrangements between the distribution members and the housing
    • F04B7/0096—Sealing arrangements between the distribution members and the housing for pipe-type distribution 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

  • the invention relates to a pump with two cylinders arranged parallel to one another, opening into a filling container, in particular for conveying thick materials, such as, for. B.
  • a filling container in particular for conveying thick materials, such as, for. B.
  • Concrete with an S-shaped curve, arranged within the filling container, pivotally mounted at its end on the delivery line side in the wall of the filling container, with its end on the delivery cylinder side alternately in front of the delivery cylinder, which can be pivoted against the tube via a wear ring sealed against the tube wall of the filling cylinder on the delivery cylinder side and abuts against the end face of the delivery line via a sealing ring.
  • the conveyed material is sucked from the filling container into this cylinder during the backward stroke of the piston of the one conveying cylinder, while during the simultaneous forward stroke of the piston of the other conveying cylinder, the conveyed material previously sucked into this conveying cylinder through the swivel pipe into the conveying line connected to the swivel pipe is pressed.
  • a reliable seal is to be achieved according to a further proposal (DEA2632816) in that the wear ring is movably and advantageously pivotably mounted on an additional tensioning device relative to the end of the swivel tube, in order in this way to counteract uneven wear of the wear ring, which is caused by the fact that the Regions of the wear ring which are closer to the pivot axis of the pivot tube are subject to less wear than the more distant regions which sweep over a larger area of the container rear wall or its pressure plate during a pivoting movement.
  • the invention is therefore based on the object of ensuring reliable sealing of the swivel tube both at its end on the delivery cylinder side and at its end on the bearing side using structurally simpler means, to achieve uniform wear of the wearing parts and to facilitate their interchangeability, and advantageously to design the swivel tube so that it can optionally be installed pivoted by 180 ° about a transverse axis.
  • the outer diameter of the end face of the axially displaceable swivel tube which is acted upon by the pressure of the conveyed material is greater than the effective effective diameter of the annular contact surface with which the wear ring is directly or indirectly against the wall on the delivery cylinder side - in the following » Rear wall «- of the filling container.
  • the end face of the swivel tube on the delivery line side is advantageously acted hydrostatically via an elastic element, which advantageously simultaneously performs a sealing function.
  • the swivel bearing on the delivery line side advantageously has an axial abutment, which is formed by the pressure flange of a connecting tube, which is used to adjust a certain preload of the elastic element or for its adjustment is advantageously connected by means of tie rods to the filling container, preferably to the rear wall thereof.
  • the conveying material pressure acting on the parts of the pivot bearing is converted into an axial thrust force acting on the end face of the pivot tube and thus an increased pressure of the wear ring against the rear wall of the filling container or against one against the Pressed back wall of the filling container, made of wear-resistant material, causes two recesses corresponding to the inner diameter of the delivery cylinder.
  • the swivel device consists of the shift lever 12, the shift shaft 11 mounted in the rear wall 44 of the filling container 1 and the swivel lever 10 partially encompassing the end of the swivel tube 5.
  • the shift lever 12 is actuated by means of two hydraulic cylinders 40, which are formed by extensions 43 of the rear wall 44 Joint sockets 42 are mounted and their piston rods engage in ball joints of the shift lever 12.
  • the hydraulic cylinders 40 as can be seen from Fig., Form an acute angle with the rear wall 44, an axial force is exerted on the selector shaft 11, which the axial pressure of the pivot tube 5 or the wear ring 20 arranged on it against the pressure plate 22 - hereinafter referred to as "glasses plate" - supports.
  • the bearing 18 is designed in such a way that the cardan shaft 11 can move gently.
  • the selector lever 12 and the pivot lever 10 are fastened by means of clamping screws 13 and 15, respectively.
  • the hydraulic pressure driving the pistons 3 of the delivery cylinders 2 advantageously acts, so that with increasing pressure the force component of the hydraulic cylinders 40 acting in the axial direction of the selector shaft 11 exerts an increasing, sealing contact pressure on the swivel tube 5.
  • the bearing 18 is sealed by means of sealing rings 17.
  • the eyeglass plate 22 To hold the eyeglass plate 22 in a pressure-resistant manner, it has an inclined surface 7 in its region adjacent to the housing of the bearing 18 and in the edge region adjacent to the bottom of the filling container 1, which is provided by inclined counter surfaces such as those on the circumference 8 of the bearing housing and on terminal strips 9 are intended to be encroached upon.
  • This type of attachment of the eyeglass plate 22 makes it possible to manufacture it from wear-resistant, hard material which makes drilling difficult, and it is easy to replace.
  • the wear ring 20 is sealed off from the swivel tube 5 by means of a sealing ring 21 bearing against an annular shoulder. This leaves the wear ring a certain freedom of movement, so that it fits tightly in the event of misalignment or elastic deformations over the entire circumference of the circular recesses provided in the eyeglass plate 22 and matching the cylinder openings 25.
  • the wear ring 20 is under pressure against the pivot lever 10, which in turn rests against an annular shoulder 38 of the pivot tube, thereby preventing the sealing ring 21 from being crushed if the axial pressing force is too great.
  • a spherical contact surface is provided between the pivot lever 10 or the pivot tube 5 and the wear ring 20.
  • a bearing bush 32 is inserted into a cylindrical recess, the outer diameter 28 (B) of which is larger than the effective effective diameter 26 (A) of the end face of the wear ring 20 resting against the spectacle plate 22.
  • This bearing bush 32 is in the Bearing shell 31 mounted, the conical end face of which is overlapped by the collar of a pot-shaped part 30, which is fastened to the wall of the filling container 1 with screws.
  • the elastic element 33 acting as a sealing ring is arranged, which is enclosed by a pressure sleeve 34.
  • Tie rods 36 the other end of which is screwed into the rear wall 44, engage on lateral approaches of the connecting tube 4.
  • Self-locking nuts 37 are screwed onto these tie rods, which limit the preload of the bearing shell 31 and the sealing ring 33 and facilitate installation and removal while avoiding incorrect settings.
  • This design of the pivot bearing in connection with the tensioning screws 15 enables the pivot tube 5 to be easily removed in the event of wear. After removing the connecting tube 4 and dismantling the pot 30, the pivot tube 5 can also be removed upwards. An expansion of the swivel tube 5 is also possible after removing the connecting tube 4 with the bearing shell 31 still installed in the axial direction towards the pressure side.
  • the pressure exerted on the bearing shell 31 by the pressure sleeve 34 brings about radial pressure and readjustment of the bearing shell 31, as a result of which bearing wear is compensated for and the penetration of conveyed goods into the bearing is prevented.
  • the annular recesses at the two ends of the swivel tube 5 have the same dimensions, so that with the same outer diameters 27 and 29, the swivel tube 5 can be installed pivoted about 180 ° around the transverse axis with one-sided wear.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (13)

1. Pompe à deux cylindres, disposés parallèlement l'un à l'autre et débouchant dans un récipient de remplissage, destinée en particulier au transport de liquides épais tels que le béton, ladite pompe comprenant un tube en »S« disposé à l'intérieur du récipient de remplissage, monté à pivotement par son extrémité tournée vers la canalisation de transport dans la paroi du révipient de remplissage, et dont l'extrémité tournée vers les cylindres de refoulement peut pivoter pour venir alternativement devant ces cylindres de refoulement, ledit tube s'appliquant, en formant un joint étanche, contre la paroi de refoulement du récipient de remplissage par l'intermédiaire d'une bague d'usure et contre la paroi avant de la conduite de refoulement par l'intermédiaire d'une bague d'étanchéité, caractérisée en ce que le diamètre extérieur de la surface frontale du tube pivotant (5) (monté pour pouvoir se déplacer axialement) qui est tournée vers la canalisation de transport et qui est soumise à la pression exercée par la matière à transporter, est plus grand que le diamètre efficace de joint (26) de la surface annulaire de contact par laquelle la bague d'usure (20) s'applique avec ou sans intermédiaire contre la paroi (44) du récipient de remplissage tournée vers les cylindres de refoulement, paroi qui sera ci-après appelée »paroi arrière« du récipient de remplissage.
2. Pompe selon la revendication 1, caractérisée en ce que la surface frontale tournée vers la canalisation de transport, du tube pivotant (5) est soumise hydrostatiquement à la pression de la matière à transporter par l'intermédiaire d'un joint d'étanchéité réalisé sous forme d'un élément élastique.
3. Pompe selon les revendications 1 et 2, caractérisée en ce que le palier de pivotement tourné vers la canalisation de transport comporte une butée axiale (4) qui est réalisée sous la forme d'un tube de liaison présentant une bride de poussée.
4. Pompe selon la revendication 3, caractérisée en ce que le tube de liaison (4) peut être réglé axialement par des tirants (36) et est lié au récipient de remplissage (1) de façon à être aisément détachable.
5. Pompe selon la revendication 4, caractérisée en ce que le tube de liaison (4) est relié par des tirants (36) à la paroi arrière (44) du récipient de remplissage (1).
6. Pompe selon une des revendications 1 à 5, caractérisée en ce que la bague d'usure (20) vient coiffer l'extrémité tournée vers les cylindres du tube pivotant (5), s'applique contre une plaque de pression (22) qui s'appuie sur la paroi (44) du récipient de remplissage tournée vers les cylindres de refoulement, et est faite d'un matériau résistant à l'usure et présente deux ouvertures correspondant au diamètre intérieur des cylindres de refoulement (2).
7. Pompe selon la revendication 6, caractérisée en ce que la plaque de pression (22) est agencée pour être amovible et qu'elle est appliquée contre la paroi arrière (44) du récipient de remplissage par des listels de serrage (9) qui la saississent par ses bords et sont fixés par des vis sur la paroi arrière du récipient de remplissage.
8. Pompe selon la revendication 7, caractérisée en ce que, entre la plaque de pression (22) et la paroi arrière (44) du récipient de remplissage (1), est disposée une bague d'étanchéité (23).
9. Pompe selon une des revendications 1 à 8, caractérisée en ce que la bague d'usure (20) qui vient coiffer le tube oscillant (5) auquel elle est reliée par un joint étanche présente une bague d'étanchéité (21) épaulée par une gorge annulaire.
10. Pompe selon une des revendications 1 à 9, caractérisée en ce que les extrémités du tube pivotant (5) - qui présente le même diamètre sur toute sa longueur - présentent sur leur pourtour extérieur des gorges annulaires cylindriques, de même configuration, dans lesquelles est logée une coquille de palier (32) qui s'applique d'une part contre l'épaulement annulaire formé par la gorge sur le tube pivotant (5) et d'autre part contre l'élément élastique (33) agencé pour servir de bague d'étanchéité, et, (du côté des cylindres de refoulement) viennent s'engager les mâchoires d'un levier de pivotement (10) tourillonnant dans la paroi arrière (44) du récipient de remplissage (1).
11. Pompe selon une des revendications 1 à 5 et 10, caractérisée en ce que, entre une coquille (31) du palier de pivotement et la bride de pression du tube de liaison (4) est disposée une douille de pression (34) qui s'applique sur la périphérie de l'élément élastique (33).
12. Pompe selon la revendication 1, caractérisée en ce que la bague d'usure (20), rendue étanche, par rapport au tube pivotant (5), au moyen de la bague d'étanchéité (21) est agencée pour pouvoir tourner sur l'extrémité du tube pivotant.
13. Pompe selon les revendications 1 et 10, caractérisée en ce que le levier de pivotement (10) est disposé sur un arbre de commutation (11) tourillonnant dans la paroi arrière (44) du récipient de remplissage (1), et sur l'extrémité arrière duquel est relié un levier de commutation (12) actionné par deux vérins hydrauliques (40) disposés dans les plans faisant un angle aigu avec la paroi arrière (44), qui viennent s'articuler dans des cavités (42) formées par des prolongements (43) de la paroi arrière (44) et dont les tiges de piston attaquent des articulations sphériques (41) du levier de commutation (12).
EP80900342A 1979-02-01 1980-08-15 Pompe a deux cylindres, en particulier pour le pompage de liquides epais Expired EP0022851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903749 1979-02-01
DE2903749A DE2903749C2 (de) 1979-02-01 1979-02-01 Kolbenpumpe mit S-förmig gekrümmtem Schwenkrohr

Publications (2)

Publication Number Publication Date
EP0022851A1 EP0022851A1 (fr) 1981-01-28
EP0022851B1 true EP0022851B1 (fr) 1983-02-09

Family

ID=6061868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900342A Expired EP0022851B1 (fr) 1979-02-01 1980-08-15 Pompe a deux cylindres, en particulier pour le pompage de liquides epais

Country Status (8)

Country Link
US (1) US4382752A (fr)
EP (1) EP0022851B1 (fr)
JP (1) JPS55501189A (fr)
AT (1) ATE2457T1 (fr)
DE (2) DE2903749C2 (fr)
ES (1) ES488121A1 (fr)
IT (1) IT1129587B (fr)
WO (1) WO1980001594A1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933128C2 (de) * 1979-08-16 1985-09-26 Friedrich Wilh. Schwing Gmbh, 4690 Herne Dickstoffpumpe, insbesondere zur Förderung von Beton
DE3153268C2 (en) * 1981-01-31 1988-01-28 Friedrich Wilh. Schwing Gmbh, 4690 Herne, De Two-cylinder viscous-material pump, preferably concrete pump
DE3122825C2 (de) * 1981-06-09 1984-11-08 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Vorrichtung zur Förderung von breiigen Massen, insbesondere Beton
AU540469B2 (en) * 1981-06-10 1984-11-22 Niigata Engineering Co., Ltd. Valve unit for use in concrete pumps
DE3240465C2 (de) * 1982-06-25 1986-10-30 WIBAU AG, 6466 Gründau Vorrichtung zur Förderung von breiigen Massen, insbesondere Beton
DE3347288A1 (de) * 1983-12-28 1985-07-18 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Zweizylinder-pumpe, insbesondere zur foerderung von dickstoffen
DE3419832A1 (de) * 1984-05-26 1985-11-28 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Rohrweiche einer dickstoff, insbesondere beton foerdernden doppelkolbenpumpe
DE3524033A1 (de) * 1984-09-25 1986-04-03 Friedrich Wilh. Schwing Gmbh, 4690 Herne Zweizylinder-dickstoffpumpe mit rohrweiche
US5302094A (en) * 1988-07-19 1994-04-12 Putzmeister-Werk Maschinenfabrik Gmbh Tube switch for a double-cylinder sludge pump
DE3905366C2 (de) * 1989-02-22 1996-07-11 Schlecht Karl Rohrweiche für Zweizylinder-Dickstoffpumpen
DE4344632A1 (de) * 1993-12-24 1995-06-29 Putzmeister Maschf Schiebervorrichtung für eine Zweizylinder-Dickstoffpumpe
DE19654023A1 (de) * 1996-12-21 1998-06-25 Putzmeister Ag Rohrweiche für eine Zweizylinder-Dickstoffpumpe
JP3882152B2 (ja) * 1997-04-18 2007-02-14 石川島建機株式会社 揺動弁形コンクリートポンプの揺動管跳上方法
CA2203708A1 (fr) * 1997-04-25 1998-10-25 Chin-Yen Kao Soupape de pompe a structure amelioree pour camions de pompage concus pour le melange de beton
DE19724504A1 (de) * 1997-06-11 1998-12-17 Schwing Gmbh F Zweizylinderdickstoffpumpe
DE10155787A1 (de) * 2001-11-14 2003-05-22 Putzmeister Ag Materialaufgabebehälter für Zweizylinder-Dickstoffpumpen
DE102004015181A1 (de) * 2004-03-25 2005-10-13 Putzmeister Ag Materialaufgabebehälter für eine Dickstoffpumpe
KR100809615B1 (ko) 2007-04-05 2008-03-05 주식회사 정명 개선된 절환밸브를 갖는 복동식 피스톤 펌프
DE102013208101A1 (de) * 2013-05-03 2014-11-20 Putzmeister Engineering Gmbh Behälter zur Aufnahme von Dickstoffen
DE102013114008A1 (de) * 2013-12-13 2015-06-18 MPS-Matter Pumpsysteme GmbH Dickstoffpumpvorrichtung, insbesondere für eine fahrbare Dickstoffpumpe
DE102013114009A1 (de) * 2013-12-13 2015-06-18 MPS-Matter Pumpsysteme GmbH Dickstoffpumpvorrichtung, insbesondere für eine fahrbare Dickstoffpumpe
DE102018126374A1 (de) * 2018-10-23 2020-04-23 Schwing Gmbh Kontinuierlich fördernde Kolbenpumpe
CN109653505B (zh) * 2019-01-29 2023-10-24 平顶山市中创橡塑制品有限公司 挤压式湿式喷浆机用的挤压管旋转装置
DE102020133021A1 (de) * 2020-12-10 2022-06-15 Liebherr-Mischtechnik Gmbh Dickstofffördervorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940198C (de) * 1952-10-04 1956-03-15 Torkret Ges Mit Beschraenkter Hydraulisch angetriebene Kolbenpumpe zur Foerderung von dickfluessigen breiigen Massen, z. B. Beton
NL129372C (fr) * 1960-08-08
GB1397778A (en) * 1972-08-09 1975-06-18 Winget Ltd Slurry pumps
FR2244085B1 (fr) * 1973-09-17 1979-10-19 Case Co J I
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
DE2614895C3 (de) * 1976-04-07 1987-01-22 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Betonpumpen-Rohrweiche
DE2632816C2 (de) * 1976-07-21 1982-07-29 Friedrich Wilh. Schwing Gmbh, 4690 Herne Abdichtvorrichtung für eine Doppelzylinderpumpe, insbesondere für die Förderung von Beton
DE2709635A1 (de) * 1977-03-05 1978-09-07 Schlecht Karl Rohrweiche fuer zweizylindrige dickstoffpumpe
DE2729159A1 (de) * 1977-06-28 1979-01-11 Rotacrete Ltd Kolbenpumpe
IT1114648B (it) * 1977-08-18 1986-01-27 Italiana Forme Acciaio Valvola distributrice a tre vie per pompe a due cilindri per calcestruzzo
JPS591354B2 (ja) * 1978-12-11 1984-01-11 極東開発工業株式会社 コンクリ−トポンプ

Also Published As

Publication number Publication date
ES488121A1 (es) 1980-09-16
DE2903749C2 (de) 1983-11-10
DE2903749A1 (de) 1980-08-14
JPS55501189A (fr) 1980-12-25
IT8019603A0 (it) 1980-01-31
EP0022851A1 (fr) 1981-01-28
ATE2457T1 (de) 1983-03-15
IT1129587B (it) 1986-06-11
DE3061836D1 (en) 1983-03-17
US4382752A (en) 1983-05-10
WO1980001594A1 (fr) 1980-08-07

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