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EP1843041B1 - Verdrängungspumpe zum Fördern von Lebensmitteln - Google Patents

Verdrängungspumpe zum Fördern von Lebensmitteln Download PDF

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Publication number
EP1843041B1
EP1843041B1 EP06425247A EP06425247A EP1843041B1 EP 1843041 B1 EP1843041 B1 EP 1843041B1 EP 06425247 A EP06425247 A EP 06425247A EP 06425247 A EP06425247 A EP 06425247A EP 1843041 B1 EP1843041 B1 EP 1843041B1
Authority
EP
European Patent Office
Prior art keywords
chamber
valve
pump
piston
product
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.)
Not-in-force
Application number
EP06425247A
Other languages
English (en)
French (fr)
Other versions
EP1843041A1 (de
Inventor
Ercole Barusi
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.)
BERTOLI Srl
Original Assignee
BERTOLI Srl
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 BERTOLI Srl filed Critical BERTOLI Srl
Priority to DE602006003863T priority Critical patent/DE602006003863D1/de
Priority to AT06425247T priority patent/ATE415557T1/de
Priority to EP06425247A priority patent/EP1843041B1/de
Publication of EP1843041A1 publication Critical patent/EP1843041A1/de
Application granted granted Critical
Publication of EP1843041B1 publication Critical patent/EP1843041B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/007—Cylinder heads
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • 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
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0266—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated the inlet and discharge means being separate members

Definitions

  • pumps for pumping fluid products containing solid parts have been used for a considerable time; these pumps are used, for example, for pumping jams, mustard, tomatoes in pieces immersed in their juice, vegetable soups containing pieces of vegetable matter, and the like.
  • These pumps normally comprise a sliding piston which aspirates the product from an inlet mouth, generally provided with a single-acting globe valve, and pumps it through an outlet mouth, also generally provided with a single-acting globe valve.
  • One of these pumps is illustrated and described, for example, in Italian patent IT 1180935 belonging to the same applicant.
  • Both documents US 3,807,909 and US 2,888,034 disclose a positive displacement pump for liquid or semi-liquid food products.
  • the pump is controlled by a spool type valve and includes a product metering cylinder into which product is drawn during an intake stroke of a piston and from which product is expelled during a discharge stroke of the piston.
  • a chamber is provided within the body of the valve having a higher valve seating and a lower valve seating.
  • the valve spool has a higher and a lower plunger section reciprocating within the valve body and the two valve seatings.
  • the piston and spool are reciprocated in timed relationship so that during a product intake stroke of the piston, the higher plunger section is in a position wherein it does not contact the higher valve seating, while the lower plunger section closes the lower seating valve.
  • the two conditions are inverted and the higher plunger section closes the higher valve seating, while the lower plunger section is in a position wherein it does not contact the lower seating valve.
  • Document US 5,252,037 discloses a piston pump for conveying fragile particulate food products without damaging the product.
  • the pump includes a filler and a discharge conduit containing piston valves actuated by hydraulic cylinders.
  • the pumping chamber in which the product is compressed is equipped with a linear displacement transducer/magnet sensor which senses not only the position, but the speed of the piston.
  • a proportioning valve releases hydraulic fluid at increasing pressure to a desired maximum, to the hydraulic cylinder actuating the piston in the pumping chamber of a second pump operating in tandem with the first pump.
  • the product is expelled alternatively from the two pumps at the maximum desired pressure appropriate for the character of the product.
  • the pump also includes means for flushing the pump without dismantling.
  • the main aim of the present invention is to provide a geometry in this kind of pump which eliminates or minimises the above-mentioned drawbacks.
  • An advantage of the invention is that it provides a pump which is easy and rapid to clean and maintain.
  • the pump of the invention comprises a piston 1 which is slidable internally of a chamber 1a afforded in the body of the pump; as with known-type pumps, the piston slides by connecting, for example by means of a joint 9, an end of the piston 1 to a movement system, not illustrated, which can for example be represented by a con rod powered by a motor.
  • the chamber 1a affords an inlet mouth 2, provided with a first single-acting valve 3, and an outlet mouth 4 provided with a second single-acting valve 5.
  • the chamber 1a develops with a longitudinal axis and has a cylindrical shape; the inlet mouth and the outlet mouth have axes which are perpendicular to the axis of the chamber and are arranged on opposite sides of the chamber 1a axis, and are not located side-by-side of one another.
  • the inlet and outlet mouths are arranged at a reciprocal distance, calculated according to the axial direction of the chamber 1a, which distance is about the same as the axial run of the piston 1.
  • the piston is arranged coaxially to the axis of the chamber 1a and is located at an end of the chamber itself; the length of the piston run is such that the piston 1 moves between two extreme positions, i.e., a position which is more internal of the chamber, from which the aspiration stage initiates, and a position more external of the chamber from which the pumping stage starts, so that it never obstructs the inlet and outlet mouths.
  • the first valve 3 and the second valve 5 are globe valves, of known type and used for these pumps. They exhibit an obturator, which rests on a valve seating, and a stem which, as with pumps of known type, is activated not only by the action of the piston but also by double-acting pneumatic cylinders which render the movement of the valve readier and more effective.
  • the obturator 3a of the first valve is internal of the chamber 1a, the seating 3b of the first valve is afforded on the internal wall of the chamber 1a, and the stem 3c of the valve projects from the chamber 1a from the opposite side to the valve seating 3b.
  • the obturator 5a and the stem 5b of the second valve 5 are external of the chamber 1a, and the seating 5b of the second valve 5 is afforded on the external wall of the chamber 1a.
  • the pump is maintained, during its operation, with the axis in a horizontal lie in order to arrange the inlet mouth 2 facing upwards.
  • the inlet mouth 2 can be connected directly and with no curves to a fluid supply pipe, not shown in the figures.
  • the fluid exiting the pump passes through an outlet pipe, not shown in the figures, which is connected to an opening 10 located downstream of the outlet mouth 4 and in communication with the outlet mouth 4 when the second single-acting valve 5 is open.
  • the piston 1, which moves in the direction indicated by the arrow A, is in an aspirating stage in which it causes the introduction of the product into the chamber 1a.
  • the product is aspirated by the inlet mouth 2 through the first single-acting valve 3, which, due both to the aspiration of the piston and the action of the relative pneumatic cylinder, is in the open position.
  • the product also by force of gravity, enters the chamber 1a directly and without encountering any obstacles, causing a mixing of the product which, as will be seen herein below, is already present in the chamber 1a.
  • the chamber 1a is full of product and the piston 1 begins its delivery run, moving in the direction indicated by the arrow B of figure 2 ; during this delivery stage the first valve 3 is closed, the second valve 5 is open, and the product exits the chamber 1a through the outlet mouth 4 and the second single-acting valve 5.
  • the exiting fluid flow further performs a complete cleaning of the pump zone comprised between the aperture 5b of the second valve 5 and the opening 10 to which the outlet pipe is connected, through which the exiting fluid is sent on to further work stages.
  • the chamber 1a is still full of fluid and the pump restarts the aspiration cycle as described above, during which, as previously mentioned, the product in the chamber is mixed up with the new product entering the chamber during the following aspiration stage.
  • the pump performs a fluid delivery a volume of which is equal to the straight section of the chamber over the piston run. Note that as the overall volume of the chamber is more than double the volume of the fluid delivery, the product remains inside the chamber for several operating cycles; this however leads to no drawbacks, indeed it constitutes an advantage since, as mentioned previously, it is exactly this presence of fluid in the chamber at the end of the delivery stage which enables a cleaning of all the parts of the chamber to be performed with the fluid.
  • the geometry of the pump of the invention enables: a considerable ease of passage of the product through the pump, with the obvious advantage of preventing deterioration, in particular, of the solid pieces contained in the product itself; an effective and constant cleaning of the chamber and the various parts of the pump crossed by the product, obtained with the product flow itself, which prevents stagnating of the product internally of the pump; a pump structure which enables easy and rapid maintenance operations, and trouble-free periodic cleaning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (5)

  1. Verbesserte positive Verdrängungspumpe zum Pumpen von flüssigen Produkten, insbesondere von Lebensmittelprodukten, von einem Typ enthaltend einen Kolben (1), gleitbar im Inneren einer Kammer (1a), welcher Kolben (1) das Produkt in die Kammer (1a) einleitet, und zwar durch Ansaugen des Produktes durch eine Einlassöffnung (2), die mit einem ersten, einfachwirkenden Ventil (3) versehen ist, und das Produkt aus der Kammer (1a) ausstösst, und zwar durch eine Auslassöffnung (4), versehen mit einem zweiten, einfachwirkenden Ventil (5), wobei die Kammer (1a) sich entlang einer längsverlaufenden Achse erstreckt; die Einlassöffnung (2) und die Auslassöffnung (4) Achsen haben, welche lotrecht zu der Achse der Kammer (1a) verlaufen; der Kolben (1) koaxial zu der Achse der Kammer (1a) angeordnet ist, und zwar an einem Ende der Kammer (1a), und zwischen zwei extremen Position auf solche Weise gleitet, dass er nie die Weiten der Einlassöffnung (2) und der Auslassöffnung (4) verdeckt, dadurch gekennzeichnet, dass das Gesamtvolumen der Kammer (1a) mehr als das Doppelte des Volumens der Zufuhr des flüssigen Produktes beträgt.
  2. Pumpe nach Patentanspruch 1, dadurch gekennzeichnet, dass die Einlassöffnung (2) und die Auslassöffnung (4) an entgegengesetzten Seiten von der Achse der Kammer (1a) angeordnet und nicht einander zugewandt sind.
  3. Pumpe nach Patentanspruch 2, dadurch gekennzeichnet, dass das erste Ventil (3) und das zweite Ventil (5) Schieberventile sind; wobei das erste Ventil (3) einen Verschluss (3a) aufweist, der sich im Inneren der Kammer (1a) befindet, einen Sitz (3b) hat, aufgewiesen an einer Innenwand der Kammer (1a), sowie einen Schaft (3c), welcher auf einer von dem Sitz (3b) des ersten Ventils (3) entgegengesetzten Seite hervorsteht; und wobei das zweite Ventil (5) einen Verschluss (5a) und einen Schaft (5c) aufweist, welche sich ausserhalb der Kammer (1a) befinden, sowie einen Sitz (5b), welcher an einer Aussenwand der Kammer (1a) aufgewiesen ist.
  4. Pumpe nach Patentanspruch 2, dadurch gekennzeichnet, dass die Einlassöffnung (2) und die Auslassöffnung (4) mit einem gegenseitigen Abstand voneinander angeordnet sind, welcher Abstand in Übereinstimmung mit einer axialen Richtung der Kammer (1a) entsprechend einem axialen Hub des Kolbens (1) berechnet ist.
  5. Pumpe nach Patentanspruch 2, dadurch gekennzeichnet, dass während des Betriebes die Pumpe mit ihrer Achse in einer horizontalen Lage gehalten wird und die Einlassöffnung (2) nach oben zeigend angeordnet ist.
EP06425247A 2006-04-07 2006-04-07 Verdrängungspumpe zum Fördern von Lebensmitteln Not-in-force EP1843041B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602006003863T DE602006003863D1 (de) 2006-04-07 2006-04-07 Verdrängungspumpe zum Fördern von Lebensmitteln
AT06425247T ATE415557T1 (de) 2006-04-07 2006-04-07 Verdrängungspumpe zum fördern von lebensmitteln
EP06425247A EP1843041B1 (de) 2006-04-07 2006-04-07 Verdrängungspumpe zum Fördern von Lebensmitteln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425247A EP1843041B1 (de) 2006-04-07 2006-04-07 Verdrängungspumpe zum Fördern von Lebensmitteln

Publications (2)

Publication Number Publication Date
EP1843041A1 EP1843041A1 (de) 2007-10-10
EP1843041B1 true EP1843041B1 (de) 2008-11-26

Family

ID=36952551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425247A Not-in-force EP1843041B1 (de) 2006-04-07 2006-04-07 Verdrängungspumpe zum Fördern von Lebensmitteln

Country Status (3)

Country Link
EP (1) EP1843041B1 (de)
AT (1) ATE415557T1 (de)
DE (1) DE602006003863D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108602491B (zh) * 2016-03-31 2022-04-12 株式会社电装 车载光学传感器清洗装置
WO2023179865A1 (en) * 2022-03-24 2023-09-28 Transitions Optical, Ltd. Dispense system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888034A (en) * 1956-08-02 1959-05-26 Glegg Douglas One-piece double check valve
US3807909A (en) * 1972-05-01 1974-04-30 Owens Illinois Inc Pump for dispensing food products
IT1180935B (it) * 1984-12-14 1987-09-23 Vittorio Bertoli Pompa volumetrica,in particolare per prodotti alimentari fluidi contenenti parti solide
US5252037A (en) * 1992-07-30 1993-10-12 Aseptic Technology Engineering Co. Piston valved vertical pump for particulate materials

Also Published As

Publication number Publication date
DE602006003863D1 (de) 2009-01-08
ATE415557T1 (de) 2008-12-15
EP1843041A1 (de) 2007-10-10

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