EP0569262B1 - Pompe volumétrique - Google Patents

Pompe volumétrique Download PDF

Info

Publication number
EP0569262B1
EP0569262B1 EP93400864A EP93400864A EP0569262B1 EP 0569262 B1 EP0569262 B1 EP 0569262B1 EP 93400864 A EP93400864 A EP 93400864A EP 93400864 A EP93400864 A EP 93400864A EP 0569262 B1 EP0569262 B1 EP 0569262B1
Authority
EP
European Patent Office
Prior art keywords
piston
orifice
pumping
closure member
closure
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
EP93400864A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0569262A1 (fr
Inventor
André Graffin
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.)
Societe dEtude et Realisation dApplications Composites SA SERAC
Original Assignee
Societe dEtude et Realisation dApplications Composites SA SERAC
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 Societe dEtude et Realisation dApplications Composites SA SERAC filed Critical Societe dEtude et Realisation dApplications Composites SA SERAC
Publication of EP0569262A1 publication Critical patent/EP0569262A1/fr
Application granted granted Critical
Publication of EP0569262B1 publication Critical patent/EP0569262B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/122—Valves; Arrangement of valves arranged in or on pistons the piston being free-floating, e.g. the valve being formed between the actuating rod and the piston

Definitions

  • the present invention relates to a positive displacement pump intended in particular to equip a machine for metering a heterogeneous liquid or viscous product.
  • Numerous positive displacement pumps are known in which the product to be metered is in contact with one of the sides of a piston mounted mobile in a cylindrical pumping chamber, the pump being equipped at one end with an opening which is alternately connected to a pipeline. supply and a distribution pipe, or an inlet opening and a distribution opening which are open and closed alternately.
  • the second side of the piston is in contact with the ambient medium and the risks of contamination of the product handled are significant.
  • An object of the invention is to provide a positive displacement pump having a low risk of contamination of the packaged product and which can be easily cleaned and sterilized.
  • the pumping orifice is alternately open and closed by acting on the operating member of the closing member so that the product is packaged while benefiting from the advantages of contact of the product with the two faces of the piston and, for cleaning, the pumping orifice is kept open so that cleaning and sterilization liquid can be sent with a high flow rate through the pump to ensure complete cleaning of the latter without any dismantling.
  • the piston operating rod is eccentric relative to the piston.
  • a rotation of the piston on itself is avoided without it being necessary to provide a particular member for this purpose.
  • the piston operating rod is mounted to slide axially on a pivoting lug, and the closing member is rigidly fixed to the operating rod and is kept applied to the piston by a elastic support member supported by the piston.
  • the elastic member has a stop and the closure member has a cavity having a depth sufficient to allow movement of the piston relative to the closure member in an axial direction of the operating rod when the cavity the closure member is opposite the elastic support member.
  • closure member is normally applied in a sealed manner to the surface facing the piston, but when the cavity of the closure member is opposite the elastic support member, the latter comes into abutment and the axial movement to which the piston can be subjected relative to the closing member then makes it possible to space the closing member of the piston and to ensure a cleaning and sterilization of the closure member on all of its faces.
  • the positive displacement pump comprises a housing 1 delimiting a cylindrical pumping chamber 2 having a longitudinal axis 3 and comprising a supply orifice 4 and a distribution orifice 5 at opposite ends.
  • a piston 6 pierced with a pumping orifice 7 is arranged to slide in an alternating movement in the pumping chamber 2 between the supply orifice 4 and the dispensing orifice 5.
  • the position of the piston 6 is controlled by an operating rod 8, the lower end of which is mounted to pivot on a pivoting pin 9 fixed on the upper face of the piston 6 eccentrically with respect thereto.
  • a closing member 10, in the form of a pallet in the illustrated embodiment, is integral with the rod operation 8.
  • the closure member 10 comprises a substantially planar lower closure face 11 facing the piston 6 and kept applied against the upper face of the piston 6 by a support member 12 in the form of a stud comprising a flange so urged elastic by a spring 13 to bear on the closure member 10.
  • the support member 12 is carried by a bracket 14 fixed to the piston 6.
  • the closure member 10 has on its face opposite the support member 12, a cavity 15, here a groove whose bottom forms an inclined ramp towards the edge of the closure member 10, which comes opposite the support member 12 when the closure 10 is pivoted according to a movement which will be explained in more detail below.
  • the operating rod 18 comprises a grooved part 20 on which is engaged an operating member 21 comprising complementary grooves for driving the operating rod 8 according to a pivoting around the pivoting pin 9 when the member 21 is moved by a control member such as a pneumatic cylinder (not shown).
  • a control member such as a pneumatic cylinder (not shown).
  • the operating rod 8 is associated with a control member (not shown) such as a pneumatic cylinder to move it along its longitudinal axis in an alternating movement intended to move the piston 6 alternately in the cylindrical pumping chamber 2.
  • the operation of the pump according to the invention is as follows: the piston 6 having been brought into the high position as illustrated in FIG. 1 by an appropriate longitudinal displacement of the operating rod 8, the operating member 21 is controlled so that the closure member 10 comes to cover the pumping orifice 7 as illustrated in solid lines in FIG. 2.
  • the operating rod 8 is then controlled to lower the piston 6 so that the product to be conditioned is sucked up by the supply orifice 4 until the piston 6 is in the low position illustrated in thin dashed line in FIG. 1.
  • the operating member 21 is then controlled to pivot the closing member 10 as illustrated in line mixed end in FIG. 2 so as to release the pumping orifice 7.
  • the operating rod 8 is controlled to raise the piston 6 and the product to be conditioned passes through the pumping orifice 7 to come below the piston 6 of so that at the stroke of the pump according to a determined quantity of product corresponding to the volume swept by the piston is pushed through the dispensing orifice 5.
  • the pump is operated several times at start-up to fill the lower part of the housing 1 and the distribution pipe not shown.
  • usual means such as controlled valves are provided on the supply and distribution lines of the pump to avoid displacement of the product to be packaged in the opposite direction to that desired.
  • the piston 6 When it is desired to clean, and if necessary sterilize the pump, the piston 6 is brought into an extreme lower position in a part 23 of the housing 1 having a diameter greater than the diameter of the piston 6. This position is illustrated in FIG. 3. Simultaneously, the closure member 10 is pivoted until the cavity 15 of the closure member 10 is opposite the support member 12 as illustrated in FIG. 4. The support member 12 come then in contact with a stop 24 formed by the lower wing of the bracket 14 so that the distance between the lower end of the support member and the upper face of the piston is greater than the thickness of the piston at the level from the cavity 15. Cleaning and sterilization product is sent through the inlet port 4 and flows through the pumping port 7 and all around the piston 6.
  • the operating rod 8 of the piston 6 serves simultaneously to rotate the closing member 10, it is possible to produce a pump comprising a separate operating rod for the closing member 10 .
  • an oversized zone 29 is shown extending continuously between the pumping orifice 7 and the pivot axis of the operating rod 8. It is of course possible to provide two separate extra thickness zones forming a rim of the same thickness around the operating rod 8 and the pumping orifice 7 in order to minimize the friction of the closure member 10 on the face of the piston 6.
  • the pump according to the invention can be produced with a pumping chamber of non-circular section, for example oval or elliptical. In this case there is no longer any risk of turning the piston on itself around the longitudinal axis of the pumping chamber and the operating rod 8 can therefore be arranged along the axis of the pumping chamber. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
EP93400864A 1992-04-07 1993-04-02 Pompe volumétrique Expired - Lifetime EP0569262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204232A FR2689570B1 (fr) 1992-04-07 1992-04-07 Pompe volumetrique.
FR9204232 1992-04-07

Publications (2)

Publication Number Publication Date
EP0569262A1 EP0569262A1 (fr) 1993-11-10
EP0569262B1 true EP0569262B1 (fr) 1995-07-05

Family

ID=9428581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400864A Expired - Lifetime EP0569262B1 (fr) 1992-04-07 1993-04-02 Pompe volumétrique

Country Status (6)

Country Link
US (1) US5292236A (es)
EP (1) EP0569262B1 (es)
BR (1) BR9300903A (es)
DE (1) DE69300240T2 (es)
ES (1) ES2075765T3 (es)
FR (1) FR2689570B1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3388921B2 (ja) * 1994-11-29 2003-03-24 株式会社東芝 集積回路カードの製造方法
JPH08326655A (ja) * 1995-06-05 1996-12-10 Calsonic Corp 斜板式コンプレッサ
FR2817848B1 (fr) * 2000-12-12 2003-03-07 Rexam Sofab Micropompe electronique
US10859071B2 (en) * 2018-08-14 2020-12-08 Stinger Oil Tools Llc Rotary traveling valve
IT201800009425A1 (it) * 2018-10-12 2020-04-12 Romaco Srl Dispositivo e apparecchiatura per l’erogazione di quantità dosate di un materiale liquido

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322552A (en) * 1919-11-25 Francis j
US1419151A (en) * 1920-06-25 1922-06-13 Christian S Kurtz Pump
US2175000A (en) * 1937-06-23 1939-10-03 Schlesinger Sigmund Apparatus for the picking up of loops or meshes dropped in hosiery and knitted goods
US2231941A (en) * 1939-09-05 1941-02-18 Nels M Ohman Vacuum gold dredge
US3981635A (en) * 1973-09-14 1976-09-21 Hedlund Manufacturing Co., Inc. Material handling system
JPS5751973A (en) * 1980-09-11 1982-03-27 Okimoto Tamada Piston pump
EP0093691B1 (de) * 1982-04-21 1985-12-27 Kurt Stauffer Kolbenpumpe für Flüssigkeiten
DE3541708A1 (de) * 1985-08-16 1987-05-27 Heinz Buechner Kolbenpumpe ohne ein- und auslassventile
US4878819A (en) * 1988-04-14 1989-11-07 Edward Bozoyan OTR safety urinal pumps

Also Published As

Publication number Publication date
DE69300240D1 (de) 1995-08-10
ES2075765T3 (es) 1995-10-01
DE69300240T2 (de) 1996-04-04
FR2689570B1 (fr) 1994-05-27
US5292236A (en) 1994-03-08
FR2689570A1 (fr) 1993-10-08
EP0569262A1 (fr) 1993-11-10
BR9300903A (pt) 1993-10-13

Similar Documents

Publication Publication Date Title
EP1971774B1 (fr) Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif
FR2518658A1 (fr) Pompe distributrice de liquide
FR2711554A1 (fr) Ensemble de distribution à reprise d'air commandée.
EP1971776B1 (fr) Machine hydraulique, en particulier moteur hydraulique, et doseur comportant un tel moteur.
FR2565130A1 (fr) Pulverisateur manuel et pompe a diaphragme pour pulverisateur
FR2719789A1 (fr) Dispositif de distribution d'un produit en mélange avec un fluide, ensemble de distribution comprenant un tel dispositif.
FR2745858A1 (fr) Perfectionnenents apportes aux pompes doseuses
EP0569262B1 (fr) Pompe volumétrique
EP0020554B1 (fr) Commande et verrouillage d'aiguille pivotante pour transporteur a tubes pneumatiques
EP1565653B1 (fr) Machine hydraulique
FR2692569A1 (fr) Procédé et dispositif de remplissage d'un distributeur doseur de substance fluide.
EP0592312B1 (fr) Doseur, robinet doseur, appareil de dosage en cadence de liquide
FR2707350A1 (fr) Dispositif de commande des déplacements alternatifs d'un piston différentiel, et pompe doseuse comportant un tel dispositif.
CA2317930C (fr) Pompe destinee a equiper un recipient
EP1084764B1 (fr) Dispositif de distribution destiné à équiper un récipient
FR2526403A1 (fr) Ensemble a pompe actionne a la main
FR3036389B1 (fr) Procede et dispositif de remplissage de reservoir.
EP1554513B2 (fr) Vanne d'arret
WO2000006453A1 (fr) Dispositif de distribution, notamment pour doseur de machine de remplissage, et doseur equipe d'un tel dispositif
EP0324698A1 (fr) Vanne pour le transfert de produits pulvérulents ou liquides sous atmosphère contrôlée
FR2980182A1 (fr) Dispositif d'echappement controle associe a un dispositif de distribution sous pression de liquide dans un recipient
FR2639066A1 (fr) Pompe doseuse a boisseau
FR2613782A1 (fr) Pompe doseuse a boisseau
EP1971775A1 (fr) Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif, et piston differentiel pour une telle machine
EP0912829A1 (fr) Pompe doseuse a commande magnetique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930408

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB IT LI NL

17Q First examination report despatched

Effective date: 19941215

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES GB IT LI NL

REF Corresponds to:

Ref document number: 69300240

Country of ref document: DE

Date of ref document: 19950810

ITF It: translation for a ep patent filed

Owner name: BARZANO'E ZANARDO S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950829

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2075765

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19970409

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970416

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19970430

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970505

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970528

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980402

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

BERE Be: lapsed

Owner name: SERAC FRANCE

Effective date: 19980430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981101

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19981101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990402

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990402

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050402