EP0776425A1 - Dispositif pour l'ouverture et la fermeture d'un clapet - Google Patents

Dispositif pour l'ouverture et la fermeture d'un clapet

Info

Publication number
EP0776425A1
EP0776425A1 EP94925434A EP94925434A EP0776425A1 EP 0776425 A1 EP0776425 A1 EP 0776425A1 EP 94925434 A EP94925434 A EP 94925434A EP 94925434 A EP94925434 A EP 94925434A EP 0776425 A1 EP0776425 A1 EP 0776425A1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
closure flap
hydraulic
drive unit
container
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.)
Granted
Application number
EP94925434A
Other languages
German (de)
English (en)
Other versions
EP0776425B1 (fr
Inventor
Hartmut Benckert
Hellmut Hurr
Paul BÄUMEN
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
Putzmeister Werk Maschinenfabrik 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 Putzmeister AG, Putzmeister Werk Maschinenfabrik GmbH filed Critical Putzmeister AG
Publication of EP0776425A1 publication Critical patent/EP0776425A1/fr
Application granted granted Critical
Publication of EP0776425B1 publication Critical patent/EP0776425B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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 an arrangement for opening and closing a closure flap arranged on a bottom-side cleaning opening of a container, in particular a material feed container for thick matter pumps.
  • the closure flap is arranged on a swivel joint fixed to the container and can be opened and closed by swiveling by hand to empty and clean the task container of a concrete pump. Above all during the opening process, due to the material adhering to the closure flap, increased frictional resistances occur, which make manual operation of the closure flap more difficult.
  • the invention is based on the object of a simple arrangement of the initially specified To create a way with which a closure flap on a container, such as a material feed container of a thick matter pump, can be opened and closed by an operator with little work and without risk of injury.
  • a hydraulic drive unit coupled with the closure flap and movable between an initial and an end position is proposed for adjusting the closure flap between a closed position sealing the cleaning opening and an outlet position at least partially releasing the cleaning opening, the closing flap being actuated ⁇ supply of a hydraulic actuator controlling the pressure oil supply to the hydraulic drive unit is adjustable in its outlet position, and by means of a mechanical actuator with simultaneous resetting of the hydraulic drive unit to its starting position lung can be reset manually to its closed position.
  • the hydraulic drive unit has a drive piston which is displaceable in a single-acting hydraulic piston which can be acted upon with pressure oil at the bottom and which is connected to the rod side with an oil tank or with the atmosphere.
  • the feed of the drive piston can be converted into a pivoting movement of the closure flap via a linkage connected to the piston rod.
  • the drive piston can be coupled to the closure flap via a rocker arm articulated on the piston rod, in which case the hydraulic cylinder is arranged on the container so as to be pivotable about an axis parallel to the axis of the cleaning opening.
  • the mechanical actuator can be designed as a handle or hand lever rigidly connected to the piston rod or to the closure cover.
  • the hydraulic supply to the hydraulic cylinder is advantageously controlled by a control valve designed as a 3/2-way valve, the bottom side of the hydraulic cylinder being in a preferably manually operated switching position of the directional valve with the pressure oil supply and in a spring-centered rest position of the directional valve connected to the oil tank.
  • a control valve designed as a 3/2-way valve
  • the bottom side of the hydraulic cylinder being in a preferably manually operated switching position of the directional valve with the pressure oil supply and in a spring-centered rest position of the directional valve connected to the oil tank.
  • the opening speed of the closure flap can be controlled by a flow valve which influences the pressure oil supply to the hydraulic drive unit and is preferably designed as a controllable throttle valve.
  • the closure lid is advantageously pressed against a sealing ring in its closed position by a run-up slope of a stop piece arranged on the container bottom.
  • FIG. 1 and 2 an arrangement for closing a cleaning opening of a container with the closure flap open and closed in FIG partially graphical representation.
  • FIG 3 shows a bottom view of a further variant of a closure arrangement in the closed (solid lines) and open (dashed lines) position.
  • closure arrangements shown in the drawing essentially consist of a closure flap 16 arranged on a bottom-side cleaning opening 10 of a container 12 of a thick matter pump 14, which is coupled to a hydraulic drive unit 20, the closure flap after triggering a hydraulic actuator 22 hydraulically opened and can be closed again in a liquid-tight manner by actuating a mechanical actuating member designed as a hand lever 23.
  • the hydraulic drive unit 20 has a drive piston 26 which is displaceable in a single-acting hydraulic cylinder 24 and which in the exemplary embodiment according to FIGS. 1 and 2 is connected via its piston rod 28 and one of two is connected to the piston rod 28 and to one another via rotary joints 30, 34
  • Coupling members 32, 36 existing linkage 18 is coupled to the closure flap 16, which in turn is arranged on the outside of the container bottom so as to be pivotable about an axis parallel to the axis 58 of the cleaning opening 10.
  • the Cleaning opening 10 is closed in a liquid-tight manner by the closure flap 16 in its closed position.
  • the thick material pump 14 has two conveying cylinders 38, 40, the front openings of which open into the container 12 and are alternately connected to a conveying line 44 via a swivel tube 42 during the pressure stroke.
  • the closure flap 16 is opened hydraulically (FIG. 1).
  • the hydraulic actuator 22 which is arranged between the bottom connection of the hydraulic cylinder 24 and the pressure side of a pump 46 and consists of a 3/2-way valve 48 and an adjustable throttle valve 50 connected upstream of the directional valve 48, is actuated.
  • the directional control valve 48 which is manually operated by means of trigger element 52, connects the bottom side of hydraulic cylinder 24 to the pressure oil supply in its switching position a, whereby piston 26 is moved into its outlet position, which opens cleaning opening 10, by pivoting closure flap 16.
  • the rod side of the hydraulic cylinder 24 is either, as shown, connected to an oil tank 51 or is directly relieved of the atmosphere.
  • the flow rate can be controlled by regulated throttling of the pressure oil supply via the throttle valve 50.
  • valve 48 in its spring-centered rest position b back, in which it connects the bottom side of the hydraulic cylinder 24 to the oil tank 51 (FIG. 2).
  • the closure flap 16 can be pivoted back into its closed position by means of the hand lever 23 rigidly arranged on the piston rod 28.
  • the hand lever 23 is pressed in the direction of the arrow 54 while simultaneously returning the piston 26 to its starting position, the pressure oil flowing back from the bottom side onto the rod side of the hydraulic cylinder 24 or into the tank 51.
  • FIG. 3 shows a modified embodiment of a closure arrangement in which the same parts are provided with the same reference numerals.
  • the hydraulic cylinder 24 is arranged on the container base so as to be pivotable about an axis 56 fixed to the container and the piston rod is connected to the closure cover 16 via a rocking lever 64 which can be rotated about the axis 58 fixed to the container, the pivot axes 56, 58 and the axis of the swivel joint 30 being parallel are arranged to the axis of the cleaning opening 10.
  • the closure cover 16 can be swiveled hydraulically into its outlet position by means of the hydraulic drive unit 20 in the manner already described and pivoted back into its closed position against the stop pieces 60 by means of the hand lever 23 rigidly connected to the closure cover 16.
  • the closure cover 16 engages under a run-up slope 61 formed on the stop pieces 60 and is thereby in its closed position pressed against a sealing ring that seals the cleaning opening 10 in a liquid-tight manner.
  • Closure arrangements according to the invention can also be used on other feed and storage containers and on premix troughs in addition to the field of application mentioned above.
  • the invention relates to an arrangement for opening and closing a closure flap 16 arranged on a bottom-side cleaning opening 10 of a material feed container 12 of a thick matter pump 14.
  • the closure flap 16 coupled to a hydraulic drive unit 20 can be hydraulically actuated by actuating a control valve 48 be swung out into their outlet position which opens the cleaning opening 10.
  • the closing flap 16 is pivoted back into its closed position by hand by means of a mechanical actuator 23 while simultaneously resetting the hydraulic drive unit 20 to its starting position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

La présente invention concerne un dispositif pour l'ouverture et la fermeture d'un capuchon (16) disposé sur l'orifice de nettoyage (10) au fond d'un récipient de distribution (12) d'une pompe à liquides épais (14). Le capuchon de fermeture (16), accouplé à une unité d'entraînement hydraulique (20), peut être pivoté par man÷uvre d'une soupape de commande hydraulique (48) vers sa position de sortie dégageant l'orifice de sortie. Le pivotement en arrière du capuchon (16) vers sa position de fermeture se fait manuellement au moyen d'un organe de réglage mécanique (23), avec remise simultanée de l'unité d'entraînement hydraulique (20) à sa position de départ.
EP94925434A 1993-08-13 1994-08-05 Dispositif pour l'ouverture et la fermeture d'un clapet Expired - Lifetime EP0776425B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4327177A DE4327177A1 (de) 1993-08-13 1993-08-13 Anordnung zum Öffnen und Schließen einer Verschlußkappe
DE4327177 1993-08-13
PCT/EP1994/002603 WO1995005538A1 (fr) 1993-08-13 1994-08-05 Dispositif pour l'ouverture et la fermeture d'un capuchon

Publications (2)

Publication Number Publication Date
EP0776425A1 true EP0776425A1 (fr) 1997-06-04
EP0776425B1 EP0776425B1 (fr) 1998-11-04

Family

ID=6495083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94925434A Expired - Lifetime EP0776425B1 (fr) 1993-08-13 1994-08-05 Dispositif pour l'ouverture et la fermeture d'un clapet

Country Status (6)

Country Link
US (1) US5823748A (fr)
EP (1) EP0776425B1 (fr)
JP (1) JPH10508074A (fr)
DE (2) DE4327177A1 (fr)
ES (1) ES2124907T3 (fr)
WO (1) WO1995005538A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101682147B1 (ko) 2010-04-05 2016-12-05 삼성전자주식회사 변환 및 역변환에 기초한 보간 방법 및 장치
DE102011079121A1 (de) * 2011-07-14 2013-01-17 Putzmeister Engineering Gmbh Dickstoffpumpe mit einem eine Reinigungsöffnung aufweisenden Materialaufgabebehälter
US9371743B2 (en) 2013-02-21 2016-06-21 United Technologies Corporation Cap drain plug

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600499A (en) * 1948-09-25 1952-06-17 Everlasting Valve Co Swinging gate valve mechanism
DE809291C (de) * 1948-12-07 1951-07-26 Ver Baubeschlag Gretsch Co Mit Druckmittel arbeitendes Geraet zum Betrieb einer Schiebetuer, Schwingtuer o. dgl.
DE2547639C2 (de) * 1975-10-24 1984-09-27 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Trichter für Betonpumpe
DE2632816C2 (de) * 1976-07-21 1982-07-29 Friedrich Wilh. Schwing Gmbh, 4690 Herne Abdichtvorrichtung für eine Doppelzylinderpumpe, insbesondere für die Förderung von Beton
DE2943967A1 (de) * 1979-10-31 1981-05-14 Friedrich Wilh. Schwing Gmbh, 4690 Herne Rohrleitungsarmatur mit einem in leitungen, die unter druck stehende dickstoffe, vorzugsweise beton foerdern, einbaubarem gehaeuse zum einwechseln eines wischers
AU540469B2 (en) * 1981-06-10 1984-11-22 Niigata Engineering Co., Ltd. Valve unit for use in concrete pumps
CH657181A5 (en) * 1982-08-31 1986-08-15 Baumgartner & Co Hans Door drive, especially for rail and road vehicles
DE3304985A1 (de) * 1983-02-12 1984-08-23 Rudolf Ing. Riker (grad.), 8940 Memmingen Pumpeneinheit fuer schwerfliessende stoffe, etwa beton
DE3524033A1 (de) * 1984-09-25 1986-04-03 Friedrich Wilh. Schwing Gmbh, 4690 Herne Zweizylinder-dickstoffpumpe mit rohrweiche
DE3538404A1 (de) * 1985-10-29 1987-04-30 Kurt Jooss Drehplattenschieber
AT389501B (de) * 1987-08-12 1989-12-27 Hoerbiger Hydraulik Servosteuerung fuer motorboote
DE3813758A1 (de) * 1988-04-23 1989-11-02 Putzmeister Maschf Materialaufgabebehaelter fuer dickstoffpumpen
CA2007977C (fr) * 1990-01-17 1996-04-23 Rene Letarte Pompe a boues

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9505538A1 *

Also Published As

Publication number Publication date
DE4327177A1 (de) 1995-02-16
WO1995005538A1 (fr) 1995-02-23
US5823748A (en) 1998-10-20
JPH10508074A (ja) 1998-08-04
DE59407244D1 (de) 1998-12-10
ES2124907T3 (es) 1999-02-16
EP0776425B1 (fr) 1998-11-04

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