EP0540944B1 - Dosierpumpe für hochviskoses Füllgut - Google Patents

Dosierpumpe für hochviskoses Füllgut Download PDF

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Publication number
EP0540944B1
EP0540944B1 EP92118043A EP92118043A EP0540944B1 EP 0540944 B1 EP0540944 B1 EP 0540944B1 EP 92118043 A EP92118043 A EP 92118043A EP 92118043 A EP92118043 A EP 92118043A EP 0540944 B1 EP0540944 B1 EP 0540944B1
Authority
EP
European Patent Office
Prior art keywords
metering pump
lever
slide valve
rotary slide
pivoted lever
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
EP92118043A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0540944A1 (de
Inventor
Klaus Doede
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.)
Kloeckner Haensel GmbH
Original Assignee
Kloeckner Haensel 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 Kloeckner Haensel GmbH filed Critical Kloeckner Haensel GmbH
Publication of EP0540944A1 publication Critical patent/EP0540944A1/de
Application granted granted Critical
Publication of EP0540944B1 publication Critical patent/EP0540944B1/de
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
    • 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
    • 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
    • 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 metering pump for highly viscous filling material, with a crankshaft-like drive for a reciprocating movement of a piston in a cylinder and a drive derived therefrom for a back and forth rotary movement of a rotary valve, the rotary valve having openings and its housing connections for a suction line and an outlet line of the piston / cylinder unit and for the rotary movement of the rotary valve a control disc, a coupling linkage and a clamping lever acting on the rotary valve are provided.
  • the invention relates to a metering pump for introducing appropriate portion amounts into a film strand with chambers located in tight order. Under a highly viscous product, viscous products, pastes, etc. The like understood, for example ketchup, mustard, cosmetic products, toothpaste, etc.
  • a metering pump of the type described at the outset is known (from FR-A-2 644 851, for example), in which the coupling linkage has a transmission lever which acts on the clamping lever.
  • the clamping lever sits radially on the rotary valve.
  • the transmission lever is variable in length. For this purpose it is subdivided and provided with corresponding threaded pieces.
  • the clamping lever engages the rotary valve using a feather key, so that the radial position of the clamping lever relative to the rotary valve and its openings cannot be changed.
  • the length of the transmission lever can only be changed while the dosing pump is at a standstill.
  • the entire setting process must be repeated. If this is not the case, the entire setting process must be repeated. If the viscosity of the filling changes during the filling process, which can happen, a readjustment is practically not possible with the known metering pump. Such readjustment is, however, very desirable or indispensable in many cases during the filling process of filling goods which are difficult to handle. Since the rotary valve acts as a valve to connect the filling container of the filling material with the piston / cylinder unit in the suction stroke and to shut off this connection in the exhaust stroke and to connect the space of the piston / cylinder unit with the outlet line, there will always be such conditions show that the strand of the filling material must tear off in the end region of the outlet line, that is to say beyond the rotary slide valve, in order to give the respective portion.
  • the invention has for its object to develop a metering pump of the type described in such a way that the position of the angle of rotation of the rotary valve and thus the conditions when the filling material strand is torn off while the metering pump is running can be changed.
  • This applies both to a basic setting, which depends, for example, on the type of the filling material, and to a readjustment, such as occurs, for example, when the filling material changes in viscosity.
  • the coupling linkage has a rocker arm, at one end of which a joint is formed which is mounted on a displaceably arranged bearing block, and in that an actuating drive for changing the position of the bearing block is independent is provided by the crankshaft-like drive.
  • An essential component of the coupling linkage is a rocker arm, whereby such a rocker arm is understood to mean a lever which swings back and forth like a pointer around a joint provided at one end. The remaining components of the coupling linkage do not act on this joint, but on the one hand on the other end of the rocker arm and still somewhere in the middle of the rocker arm.
  • the coupling linkage can have a push rod engaging on the control disk, the rocking lever and a transmission lever articulated on the clamping lever, the push rod pivotally engaging the central bearing of the rocking lever; the other end joint of the rocker arm is then articulated on the transmission lever.
  • Such a coupling linkage is suitable for a metering pump in which a control disk, seated on the drive shaft, is used, with one end of the push rod moving its back and forth Moving movement decreases from the eccentrically formed circumference or a sliding groove of the control disc.
  • the bearing block can be moved on a guide rod and can be adjusted by means of a thread via a control spindle as part of the actuator.
  • the axes of the guide rod and the control spindle are arranged parallel to each other. They both penetrate the bearing block, so that it is non-rotatably mounted and nonetheless linearly displaceable.
  • the push rod can be expediently guided in a straight line, and its central bearing, which engages in the central region of the swivel lever, is then displaceably arranged on the swivel lever in the direction of extension thereof.
  • This displaceability is necessary because the rocker arm also performs a circular arc movement in its central region, while the push rod is guided in a straight line. The differences caused by this are thus compensated.
  • a piston 1 is shown, which is driven back and forth in a cylinder according to arrow 3.
  • a drive similar to a crankshaft is provided, but is not shown.
  • the piston is shown in its front dead center position, i.e. at the end of the exhaust stroke or at the beginning of the return stroke.
  • the piston / cylinder unit 1, 2 thus provides a suction or displacement space which provides the pumping action.
  • the piston / cylinder unit 1, 2 is assigned a rotary slide valve 4, which is wave-shaped and is rotatably mounted in a housing 5.
  • the rotary valve 4 is penetrated by T-shaped openings 6, which extend radially to the axis of the rotary valve 4.
  • a suction line 7 is connected at the top, while an outlet line 8 begins at the side.
  • the suction line 7 is connected to a storage container for filling material, so that during the suction stroke of the piston / cylinder unit 1, 2 filling material according to arrow 9 can pass through the subsequent openings 6 into the space formed between the piston 1 and the cylinder 2.
  • the rotary valve 4 is in the position shown in FIG.
  • the rotary valve 4 has to make a rotary movement back and forth by approximately 90 °.
  • this pivoting range is shown in its basic setting 11.
  • An adjustment range 12 is illustrated, which can be approximately 15 ° here. It can thus be seen that the swivel range 11 can be maximally changed in its relative position by approximately the adjustment range 12.
  • the maximum changed swivel range 13 is the position of the swivel angle at which the maximum back suction of the filling material is reached contrary to arrow 10.
  • a coupling linkage 14 is switched on in the drive train for the forward and backward rotary movement of the rotary valve 4.
  • the coupling linkage 14 has a push rod 15 (see also FIG. 4) which is guided in a straight line with the aid of a bearing bush 16.
  • the push rod carries out a straight reciprocating movement according to arrow 17.
  • a rocker arm 20 is provided on the housing or frame 18 in a bearing block 19 as an essential component of the coupling linkage 14.
  • a joint 21 is arranged, via which the rocker arm 20 is connected to the bearing block 19.
  • a central bearing 22 is formed, via which the front end of the push rod 15 hinges on the rocker arm 20.
  • This central bearing 22 is arranged to be displaceable in the main direction of extension of the rocker arm 20 by the required amount, as can be seen in particular in FIG. 3. This displaceability is necessary because the push rod 15 executes a straight-line reciprocating movement, while the rocker arm 20 executes an arc-shaped movement about the joint 21.
  • a lever 23 is provided on the rocker arm 20, on which a transmission lever 24 engages, which also also belongs to the coupling linkage 14.
  • the gear connection is supplemented by a clamping lever 25, which is clamped in a rotationally fixed manner on the rotary slide 4 with the aid of a feather key 26, namely laterally on a shaft-like extension 27.
  • the clamping lever 25 extends radially to the axis of the rotary slide 4.
  • the clamping lever 25 and the transmission lever 24 are connected by means of a joint 28. It can be seen that the reciprocating movement of the push rod 15 according to arrow 17 is converted into a reciprocating movement of the rocking lever 20 around the joint 21, this movement taking place according to arrow 29. Via the transmission lever 24 and the clamping lever 25, the rotary slide 4 is thus transmitted in the forward and backward rotary movement according to the pivoting range in the basic position 11.
  • an actuator 30 which engages on the bearing block 19 and thus changes the relative position of the joint 21 to the frame 18.
  • An essential component of the actuator is a control spindle 31, that is to say a threaded rod, which is rotatably mounted in the frame 18 and is guided outwards, ie accessible from there, in a rotary knob 32.
  • the bearing block 19 is not only penetrated by the control spindle 31, but also by a guide rod 33, the axes of the control spindle 31 and the guide rod 33 being arranged in parallel with one another, so that in this way and by means of a sliding surface 34 on the frame 18 the bearing block is ultimately linearly adjustable on the frame 18.
  • the adjustment area 35 need not be particularly large. It is sufficient here about 4 mm for an adjustment range 12 of 15 °, since the rocker arm 20 causes a corresponding translation.
  • the thread of the control spindle 31 can expediently be a fine thread in order to enable sensitive adjustment and readjustment.
  • Figure 4 shows that the drive for the coupling linkage 14 or the push rod 15 is removed from a control disk 36 which is seated on a drive shaft 37 which is part of the common drive of the piston 1 according to arrow 3 and the rotary valve 4.
  • the end of the push rod 15 facing the control disk 36 engages with the aid of a sliding block 38 in a groove 39 of the control disk 36.
  • the groove 39 is formed eccentrically to the axis of the drive shaft 37, in order in this way to derive the reciprocating translatory movement of the push rod 15 according to arrow 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP92118043A 1991-11-02 1992-10-22 Dosierpumpe für hochviskoses Füllgut Expired - Lifetime EP0540944B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4136097A DE4136097C1 (pt) 1991-11-02 1991-11-02
DE4136097 1991-11-02

Publications (2)

Publication Number Publication Date
EP0540944A1 EP0540944A1 (de) 1993-05-12
EP0540944B1 true EP0540944B1 (de) 1995-03-29

Family

ID=6443930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92118043A Expired - Lifetime EP0540944B1 (de) 1991-11-02 1992-10-22 Dosierpumpe für hochviskoses Füllgut

Country Status (3)

Country Link
US (1) US5330331A (pt)
EP (1) EP0540944B1 (pt)
DE (2) DE4136097C1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0690232A1 (de) * 1994-06-28 1996-01-03 MTA Automation AG Membranpumpe
US5741261A (en) * 1996-06-25 1998-04-21 Sdgi Holdings, Inc. Minimally invasive spinal surgical methods and instruments
GB2374039B (en) * 2001-02-24 2005-08-03 P O Marketing Ltd A personalisable presentation item
DE102005024174A1 (de) * 2005-05-23 2006-12-07 Schwing, Friedrich, Dipl.-Ing. Verfahren zum Steuern einer Pumpvorrichtung zur Förderung breiiger Massen sowie Steuerung einer Pumpvorrichtung zur Förderung breiiger Massen
US9579429B2 (en) * 2006-03-29 2017-02-28 Novartis Ag Surgical cassette with compliant clamping zone
US7712802B2 (en) * 2006-06-12 2010-05-11 Alcon, Inc. Cassette clamping mechanism
US20080015515A1 (en) * 2006-06-29 2008-01-17 Mark Alan Hopkins Top and bottom clamping for a surgical cassette
EP2133609B1 (en) * 2008-06-13 2013-01-23 Willcox Investments S.A. Precision dispense valve
BR112017007471B1 (pt) 2014-10-13 2022-09-06 Alfa S.R.L. Bomba de deslocamento positivo e grupo de bombeamento para produtos fluidos e método para o uso dos mesmos
US11035348B2 (en) * 2018-08-28 2021-06-15 National Oilwell Varco, L.P. Reciprocating pumps having a pivoting arm

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1066660A (en) * 1913-07-08 Charles P Ross Liquid-measuring apparatus.
US2017975A (en) * 1932-02-17 1935-10-22 Jacobus C Kooyman Concrete pump
US2032163A (en) * 1932-09-30 1936-02-25 Ralph B Bagby Filling machine
US2125283A (en) * 1936-05-06 1938-08-02 Leo S Madlem Pump for semifluids
US2384783A (en) * 1943-09-23 1945-09-11 Chain Belt Co Pump for plastic concrete mixtures
US2448104A (en) * 1945-12-06 1948-08-31 Chain Belt Co Differential concrete pump
DE1010377B (de) * 1954-09-06 1957-06-13 Lewa O H G Ott & Schestag Dosierpumpe fuer Fluessigkeiten
DE1013519B (de) * 1955-09-19 1957-08-08 Lewa O H G Ott & Schestag Dosierpumpe fuer Fluessigkeiten
CH464698A (de) * 1965-09-15 1968-10-31 Nikex Nehezipari Kulkere Vorrichtung an Arbeitsmaschinen zur Verstellung des Hubes eines hin- und hergehenden Kolbens der Arbeitsmaschine
US3506382A (en) * 1968-05-21 1970-04-14 Zurcon Corp Concrete pump
US3552440A (en) * 1969-01-09 1971-01-05 Hercules Concrete Pumps Inc Valve for controlling flow of concrete
GB1513468A (en) * 1975-10-07 1978-06-07 Chrysler Uk Rotor balancing devices
FR2644851A1 (fr) * 1988-11-24 1990-09-28 Kechich David Pompe pour pompage des produits alimentaires liquides contenant des parties solides dont la temperature est voisine de 180 degres celsius

Also Published As

Publication number Publication date
US5330331A (en) 1994-07-19
DE59201773D1 (de) 1995-05-04
DE4136097C1 (pt) 1993-03-04
EP0540944A1 (de) 1993-05-12

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