EP0298140A1 - Pompe de dosage avec un piston rotatif - Google Patents

Pompe de dosage avec un piston rotatif Download PDF

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Publication number
EP0298140A1
EP0298140A1 EP87109720A EP87109720A EP0298140A1 EP 0298140 A1 EP0298140 A1 EP 0298140A1 EP 87109720 A EP87109720 A EP 87109720A EP 87109720 A EP87109720 A EP 87109720A EP 0298140 A1 EP0298140 A1 EP 0298140A1
Authority
EP
European Patent Office
Prior art keywords
hub
axis
angle
rotary piston
dosing pump
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.)
Withdrawn
Application number
EP87109720A
Other languages
German (de)
English (en)
Inventor
András Odrobina
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.)
Dozsa Mezogazdasagi Termeloszovetketzet
Original Assignee
Dozsa Mezogazdasagi Termeloszovetketzet
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 Dozsa Mezogazdasagi Termeloszovetketzet filed Critical Dozsa Mezogazdasagi Termeloszovetketzet
Priority to EP87109720A priority Critical patent/EP0298140A1/fr
Publication of EP0298140A1 publication Critical patent/EP0298140A1/fr
Withdrawn legal-status Critical Current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
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/06—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports the pistons and cylinders being relatively reciprocated and rotated

Definitions

  • the invention relates to a metering pump with a rotary piston, the stroke length and delivery capacity can be changed continuously during operation, and which works without valves.
  • Dosing pumps with rotary lobes are mainly used in the chemical, pharmaceutical and food industries when the necessary liquid components are continuously supplied during a work process. For this reason, such pumps are commonly referred to as metering pumps.
  • the first group includes those machines whose pistons perform a pendulum motion of variable length.
  • the characteristic of this type of machine is that the control of the conveyed liquid flowing in one direction is ensured by automatic valves.
  • the second group includes metering pumps with pistons but without valves. With these machines, the piston moving back and forth makes one complete revolution per stroke. This complex piston movement makes it possible for the piston which carries out a pendulum or rotary movement to alternately open and close the suction opening or the pressure opening, as a result of which the conveyed liquid only flows in one direction.
  • the invention is based on the object of developing a mechanism which sets the piston in motion, which enables reduced machine dimensions and machine dimensions as well as advantageous and simple producibility and easy assembly.
  • the machine according to the invention is also intended to be suitable for designing series and twin machines and series machines in a multi-headed design, based on the principle of the modular system.
  • the invention relates to a metering pump with a slot-controlled rotary piston in which a rotating hub is provided for moving the rotary piston.
  • the center point of the driver ball joint fastened to the hub and arranged outside the axis of rotation lies in the bore of the free-running and rotatable control disk which encloses an angle with the axis of rotation.
  • the free-running control disk of the metering pump is arranged in the interior of the adjusting disk, wherein the angle enclosed with the axis of the hub can be changed.
  • the angle of inclination of the adjusting disc of the metering pump is changed with the aid of the - advantageously articulatedly connected - in the direction of the nut and axially adjustable threaded spindle.
  • the radial axis of symmetry of the driver ball joint encloses an angle of 90 ° or approximately 90 ° with the radial axis of symmetry of the control opening configured on the piston skirt.
  • a switching element which permits axial displacement between the drive shaft and the hub, advantageously a feather key, is arranged.
  • the metering pump is moved using the output shaft 1 of any drive.
  • the drive shaft 1 is detachably connected to a hub 3 via a parallel key 2.
  • the feather key 2 is designed such that a slight axial movement of the hub 3 is possible.
  • the hub 3 carries a driver ball joint 4 which engages in the radial bore of a free-running control disk 5.
  • the control disk 5 can be tilted with an adjusting disk 6 about the axis center point "A", the tilt angle being determined by a driver pin 8 guided between the legs of a fork 7 or its position.
  • the driving pin 8 forms a unit with a nut 9, the axial position of which can be changed by turning a screw spindle 10 provided with a handwheel.
  • a rotary piston 14 is connected in a rotationally fixed manner to the hub 3 via a securing pin 13 and is mounted in the interior of a cylinder 16 via a seal 15.
  • a suction port 17 and a pressure port 20 are connected to the cylinder 16, which is closed by a closure cap 19 which is arranged adjacent to the free end of the rotary piston 14.
  • the stroke length is proportional to the distance between the zero point "O" of the scale present on the window 11 and the character "D" present on the displaced nut 9:
  • C the distance between the screw spindle and the center of the axis
  • O the starting point of the position sign
  • D the given point on the map describe.
  • the hub 3 During a complete revolution of the output shaft 1, the hub 3 also executes a reciprocating movement of the size "S" in addition to the complete revolution.
  • the free end of the rotary piston 14 is hollow on the end face.
  • a control opening 18 lies in this bore.
  • the radial axis of symmetry of the control opening 18 and the radial axis of the driving ball joint 4 form an angle of 90 ° with one another.
  • the suction port 17 and the pressure port 20 are closed by the piston skirt in the upper and lower dead positions of the driver ball joint 4.
  • the control opening 18 connects the suction port 17, or another time the pressure port 20, alternately with the space of the cylinder 16 Role of the pressure port 20 takes over.
  • the metering pump according to the invention with a rotary piston works without valves.
  • the omission of the valves is made possible by the mechanism according to the invention, which ensures the rotating and oscillating movement of variable length required for slot control.
  • the advantage of the invention is in particular that the mechanism is much smaller than in the known solutions, that its arrangement and dimensions allow easy adaptation to the output shaft of any drive, and that the stroke length can be changed easily and also during operation, which in addition, an infinitely variable change in the delivery rate enables.

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  • Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP87109720A 1987-07-06 1987-07-06 Pompe de dosage avec un piston rotatif Withdrawn EP0298140A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP87109720A EP0298140A1 (fr) 1987-07-06 1987-07-06 Pompe de dosage avec un piston rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87109720A EP0298140A1 (fr) 1987-07-06 1987-07-06 Pompe de dosage avec un piston rotatif

Publications (1)

Publication Number Publication Date
EP0298140A1 true EP0298140A1 (fr) 1989-01-11

Family

ID=8197111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109720A Withdrawn EP0298140A1 (fr) 1987-07-06 1987-07-06 Pompe de dosage avec un piston rotatif

Country Status (1)

Country Link
EP (1) EP0298140A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4409994A1 (de) * 1994-03-23 1995-09-28 Prominent Dosiertechnik Gmbh Verdrängerkolbenpumpe
FR2764343A1 (fr) * 1997-06-09 1998-12-11 Saphirwerk Ind Prod Pompe de dosage, sans soupape, pour fluides, a debit controlable
WO2002040864A1 (fr) * 2000-11-15 2002-05-23 Gimelli Produktions Ag Pompe a piston
EP1260366A1 (fr) * 2001-05-23 2002-11-27 Kabushiki Kaisha Tokyo Kikai Seisakusho Pompe étanche pour le dispositif d'encrage d'une machine d'impression rotative
GB2410301A (en) * 2004-01-23 2005-07-27 Rocky Mountain Parabolic Produ A pump having a plunger with rotating and reciprocating motion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR542213A (fr) * 1921-10-10 1922-08-08 Pompe à piston
DE943876C (de) * 1951-12-29 1956-06-01 Lorraine De Travaux Ferroviair Kolbenpumpe
US2896459A (en) * 1957-02-15 1959-07-28 Thunderbird Engineering Compan Fluid pump
US3168872A (en) * 1963-01-23 1965-02-09 Harry E Pinkerton Positive displacement piston pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR542213A (fr) * 1921-10-10 1922-08-08 Pompe à piston
DE943876C (de) * 1951-12-29 1956-06-01 Lorraine De Travaux Ferroviair Kolbenpumpe
US2896459A (en) * 1957-02-15 1959-07-28 Thunderbird Engineering Compan Fluid pump
US3168872A (en) * 1963-01-23 1965-02-09 Harry E Pinkerton Positive displacement piston pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4409994A1 (de) * 1994-03-23 1995-09-28 Prominent Dosiertechnik Gmbh Verdrängerkolbenpumpe
US5472320A (en) * 1994-03-23 1995-12-05 Prominent Dosiertechnik Gmbh Displacement piston pump
FR2764343A1 (fr) * 1997-06-09 1998-12-11 Saphirwerk Ind Prod Pompe de dosage, sans soupape, pour fluides, a debit controlable
BE1012533A5 (fr) * 1997-06-09 2000-12-05 Saphirwerk Ind Prod Pompe de dosage, sans soupape, pour fluides, a debit controlable.
AT413869B (de) * 1997-06-09 2006-06-15 Saphirwerk Ind Prod Vorrichtung zur dosierten förderung von flüssigkeiten
WO2002040864A1 (fr) * 2000-11-15 2002-05-23 Gimelli Produktions Ag Pompe a piston
EP1260366A1 (fr) * 2001-05-23 2002-11-27 Kabushiki Kaisha Tokyo Kikai Seisakusho Pompe étanche pour le dispositif d'encrage d'une machine d'impression rotative
GB2410301A (en) * 2004-01-23 2005-07-27 Rocky Mountain Parabolic Produ A pump having a plunger with rotating and reciprocating motion
GB2410301B (en) * 2004-01-23 2007-12-05 Rocky Mountain Parabolic Produ Reversible pump for driving hydraulic cylinders

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Inventor name: ODROBINA, ANDRAS