EP0456540A1 - Dosierpumpe - Google Patents

Dosierpumpe Download PDF

Info

Publication number
EP0456540A1
EP0456540A1 EP91401042A EP91401042A EP0456540A1 EP 0456540 A1 EP0456540 A1 EP 0456540A1 EP 91401042 A EP91401042 A EP 91401042A EP 91401042 A EP91401042 A EP 91401042A EP 0456540 A1 EP0456540 A1 EP 0456540A1
Authority
EP
European Patent Office
Prior art keywords
valve
housing
parts
hoop
metering 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.)
Granted
Application number
EP91401042A
Other languages
English (en)
French (fr)
Other versions
EP0456540B1 (de
Inventor
Michel Texier
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.)
ALPHA-PLASTIQUES
Original Assignee
ALPHA-PLASTIQUES
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 ALPHA-PLASTIQUES filed Critical ALPHA-PLASTIQUES
Publication of EP0456540A1 publication Critical patent/EP0456540A1/de
Application granted granted Critical
Publication of EP0456540B1 publication Critical patent/EP0456540B1/de
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
    • F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • 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
    • F04B53/1037—Flap valves
    • F04B53/104—Flap valves the closure member being a rigid element oscillating around a fixed point
    • F04B53/1042—Flap valves the closure member being a rigid element oscillating around a fixed point by means of a flexible connection

Definitions

  • the present invention relates to metering pumps intended for the chemical industry for the supply of a very low flow rate of a liquid product, taken from a reserve and discharged towards a device for use.
  • the invention relates to metering pumps of the type described in patent FR-2,586,064.
  • the suction and delivery member consists of a membrane driven in a back and forth movement opposite a valve box constituted by a cylindrical body added in a corresponding housing and which has two channels, respectively suction and discharge of the liquid to be pumped.
  • Each valve consists of a movable pellet disposed in a housing provided at the outlet of the corresponding channel, therefore open, one towards the pumping volume and the other towards the delivery pipe.
  • Each of these valves is mounted in its housing with the interposition of an annular seal, while an elastic washer pierced with communication holes is disposed against its opposite face, the return of this valve in its normal closed position being ensured by a pad of elastic cellular material, with open porosity, serving as a spring.
  • this buffer is interposed between the elastic washer pierced with holes and the movable membrane serving as a suction and discharge member.
  • the elastic support pad is interposed between the corresponding elastic washer and the wall of the pump body cover.
  • the back and forth movements of the suction and discharge membrane are controlled by a mechanical or electromagnetic system.
  • the arrangement thus provided ensures successively the aspiration of a given volume of liquid through the suction valve, at the end of the stroke the closure of this valve then, the movement of the membrane reversing, the opening of the discharge valve and the expulsion of the volume of liquid previously sucked.
  • the present invention relates to a pump of the same general type but which is designed so as to eliminate the drawbacks mentioned above and to provide a certain number of improvements.
  • the pump according to the invention is essentially characterized in that, on either side of the body of the valve box, there are provided two pieces of molded material each comprising on the one hand a ring fitted on the corresponding edge of this body and able to seal the mounting thereof in its housing, and on the other hand an elastic tongue integral with said ring and carrying a support plate disposed against the pad of the corresponding valve in order to serve as a spring capable of ensuring the return of this pellet in the normal closed position after its lifting in the open position.
  • the dosing pump shown is of the type described in patent FR-2,586,064. It therefore comprises a membrane 1 of pre-formed plastic material which is intended to serve as a suction and delivery device. The edges of this membrane are trapped between the body 2 of the pump and a cylinder head 3 attached to it and fixed by means of screws 4 or claws making it possible to assemble, in a single operation, the cover 13, the cylinder head 3 , the membrane 1, the body 2 and the casing of the control electromagnet. On one of its faces, the membrane 1 comprises a protector 5 on which is fixed an operating rod 6. This crosses the coil 7 of an electromagnet and it carries at the end a magnet 8 capable of being attracted to it. A return spring 9 is also provided to return the membrane 1 to its normal position.
  • the opposite face of this membrane is arranged opposite a valve box constituted by a small cylindrical body 10.
  • the latter is disposed in a housing 11 provided inside the cylinder head 3 and which opens in the direction of the membrane 1.
  • the space 12 existing between this membrane and the corresponding face of the body 10 constitutes the pumping volume which is by definition extremely restricted, since it must correspond to the intended dose of the liquid to be pumped.
  • the body 10 is held in place by a cover 13 attached to the cylinder head 3 and which comprises a conduit 14 for discharging the pumped product.
  • the suction pipe 15 it is provided on the opposite side, inside the cylinder head 3, this pipe opening into the housing 11 of the valve box.
  • the body 10 of the valve box has two respectively suction 16 and discharge 17 channels which communicate one with the suction duct 15 and the other with the discharge duct 14.
  • the outlet of the suction channel 16 is located on the face of the body 10 which is placed opposite the membrane 1.
  • the outlet of the discharge channel 17 it is located on the opposite face of the body 10.
  • the corresponding face of this body 10 has a small cylindrical housing 18 inside which is disposed a rigid flat pad 19a or 19b, of preferably stainless steel which is suitable for use as a suction or discharge valve.
  • an annular collar 20 intended to constitute the seat of the corresponding valve.
  • the housing 18 of the suction valve 19a is open in the direction of the membrane 1.
  • the housing 18 of the suction valve 19b is open in the direction of a free space communicating with the discharge line 14.
  • each of these parts comprises first of all a ring 22 which is fitted around the corresponding body 10 and is capable of ensuring the mounting tightness of the latter in its housing.
  • each part 21a and 21b comprises a support plate 23 in the form of a bar which is arranged against the corresponding valve 19a or 19b. This bar extends transversely inside the ring 22 and at its ends it is integral with a hoop 24 which is attached to the ring 22 by two elastic tabs 25.
  • the parts 21a and 21b are molded from a synthetic resin chosen accordingly.
  • the whole formed by the bar 23, the arch 24 and the tongues 25 constitutes a deformable part which extends in a plane perpendicular to the axis of the ring 22 and the external face of which is normally in the same plane as the external face of this ring.
  • the body 10 of the valve box On its periphery, the body 10 of the valve box has an annular shoulder 26 which is intended to limit the interlocking of the rings 22 of the two parts 21a and 21b.
  • annular shoulder 26 On its periphery, the body 10 of the valve box has an annular shoulder 26 which is intended to limit the interlocking of the rings 22 of the two parts 21a and 21b.
  • this clearance J As illustrated in FIG. 4. The existence of this clearance will make it possible to constrain the deformable part of each part 21a and 21b when the assembly is tightened inside the housing 11, as explained in more detail below.
  • each part 21a and 21b is capable of constituting a return spring for the corresponding valve.
  • the cover 13 is put in place and tightened by means of the screws 4. This causes the rings 22 of the two parts 21a and 21b to be compressed, so that these seal the assembly. During this compression of the rings 22, the outer shell 28 plays the role of a hooping member allowing these rings to fully play their role.
  • the back and forth movements of the diaphragm 1 successively cause the valve 19a to be raised in the open position for suction of a dose of the liquid to be pumped, then the valve 19b to be lifted to the delivery of this same dose, the valve 19a then being pushed back into the closed position.
  • the support plate 23 of each piece 21a or 21b ensures the return of the corresponding valve in its normal closed position after it has been moved away from it. Consequently, these two parts play both the role of a seal and a spring for each of the valves. Consequently, each of these parts replaces several of the parts provided in current dosing pumps of the same kind. This results in a great simplification and a reduction in the cost price.
  • the assembly operations are also greatly simplified since the cylindrical body 10 can be put in place with all the parts associated with it.
  • the risks of incompatibility of the dosing pump with certain liquids used in the chemical industry are reduced.
  • the membrane 1 and the parts 21a and 21b can be molded from another synthetic resin having the desired qualities of elasticity and which is chosen according to the medium of use, the pellets 19a and 19b forming valves being for their part made of steel stainless.
  • the metering pump according to the invention is not limited to the single example of embodiment described above for information only.
  • the lifting pins 27 could possibly be eliminated, the initial reforming stress of the deformable part of the parts 21a and 21b then being ensured only by the take-up of the clearance J indicated in FIG. this game while maintaining the lifting pins 27.
  • the surrounding ferrule 28 can be eliminated, the rings 22 of the two parts 21a and 21b then applying directly against the internal wall of the corresponding housing 11.
  • FIG. 5 represents an alternative embodiment in which the transverse bar 23c of support is carried by an arch 24c similar to the arch 24 of Figure 3, but which is connected to the outer ring 22c by two tabs 25c arranged differently from the tabs 25 and also working in a different way. Indeed, these tabs are arranged on either side of this hoop and near the bar 23c. In such a case, these bars are then able to work in torsion to ensure the application of the bar 23c against the corresponding valve 19a or 19b.
  • the parts 21a and 21b forming both a seal and a return spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP91401042A 1990-05-11 1991-04-19 Dosierpumpe Expired - Lifetime EP0456540B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005894 1990-05-11
FR9005894A FR2661955B1 (fr) 1990-05-11 1990-05-11 Pompe doseuse.

Publications (2)

Publication Number Publication Date
EP0456540A1 true EP0456540A1 (de) 1991-11-13
EP0456540B1 EP0456540B1 (de) 1993-06-23

Family

ID=9396511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401042A Expired - Lifetime EP0456540B1 (de) 1990-05-11 1991-04-19 Dosierpumpe

Country Status (3)

Country Link
EP (1) EP0456540B1 (de)
DE (1) DE69100138T2 (de)
FR (1) FR2661955B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034450A (en) * 1956-05-09 1962-05-15 Tokheim Corp Hand operated diaphragm pump
GB1013298A (en) * 1962-10-12 1965-12-15 Vyzk Ustav Prislusenstvi Motor Electromagnetic fuel feeding pump
US3461808A (en) * 1967-07-03 1969-08-19 Wood John Co Diaphragm hand pumps
DE2855541A1 (de) * 1978-12-22 1980-06-26 Zahnradfabrik Friedrichshafen Ventil, insbesondere druckventil fuer eine kolbenpumpe
FR2586064A1 (fr) * 1985-08-06 1987-02-13 Alpha Plastiques Pompe doseuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034450A (en) * 1956-05-09 1962-05-15 Tokheim Corp Hand operated diaphragm pump
GB1013298A (en) * 1962-10-12 1965-12-15 Vyzk Ustav Prislusenstvi Motor Electromagnetic fuel feeding pump
US3461808A (en) * 1967-07-03 1969-08-19 Wood John Co Diaphragm hand pumps
DE2855541A1 (de) * 1978-12-22 1980-06-26 Zahnradfabrik Friedrichshafen Ventil, insbesondere druckventil fuer eine kolbenpumpe
FR2586064A1 (fr) * 1985-08-06 1987-02-13 Alpha Plastiques Pompe doseuse

Also Published As

Publication number Publication date
FR2661955B1 (fr) 1992-07-24
EP0456540B1 (de) 1993-06-23
FR2661955A1 (fr) 1991-11-15
DE69100138D1 (de) 1993-07-29
DE69100138T2 (de) 1993-09-30

Similar Documents

Publication Publication Date Title
EP2723504B1 (de) System zum verschliessen einer vorrichtung zur ausgabe eines pastösen flüssigstoffes bei niedrigem druck
EP0705143B1 (de) Sprühdüse und zerstauber mit einer solchen düse
EP1462180B1 (de) Vorrichtung zur wiederholten Abgabe von Mediendosen
EP2136931A1 (de) Vorrichtung zur ausgabe eines flüssigen bis pastösen produkts mittels dosierpumpe
FR2565130A1 (fr) Pulverisateur manuel et pompe a diaphragme pour pulverisateur
FR2758801A1 (fr) Systeme d'obturation d'un dispositif de distribution de produit fluide
FR2813283A1 (fr) Distributeur a pompe integree
FR3048192A1 (fr) Pompe pour receptacle, notamment un flacon de produit cosmetique, et dispositif de distribution comprenant une telle pompe
EP3592470B1 (de) Vorrichtung zur abgabe eines produkts mit verbesserter auslösung
FR2798368A1 (fr) Pompe de distribution de produit fluide amelioree, et dispositif de distribution de produit fluide comportant une telle pompe
FR2554088A1 (fr) Dispositif distributeur en vue de decharger un produit liquide ou pateux d'un recipient contenant un tel produit
WO2002004128A1 (fr) Pompe de distribution de produit fluide
FR2962986A1 (fr) Dispositif pour distribuer un liquide, et procede de fabrication d'un tel dispositif.
FR2791033A1 (fr) Systeme de remplissage de recipients
EP0456540B1 (de) Dosierpumpe
EP3416748A1 (de) Ausgabeelement und spender mit solch einem element
WO2006106256A2 (fr) Tête de distribution.
EP1631510B1 (de) Abgabeelement für ein flüssiges produkt
FR2814727A1 (fr) Valve destinee a equiper un dispositif pour la distribution sous pression d'un produit, et dispositif ainsi equipe
BE1008193A3 (fr) Doseur volumetrique de produits notamment pulverulents.
WO2003086646A1 (fr) Pompe de distribution de produit fluide
FR2497178A1 (fr) Distributeur de doses de produits pateux
EP0805719B1 (de) Pumpe mit einlassventil in mono-blockbauweise und formeinrichtung für ein solches ventil
FR3040270A1 (fr) Pompe de distribution de produit cosmetique et dispositif de distribution comprenant une telle pompe
FR2739084A1 (fr) Dispositif de distribution de produit fluide du type a actionnement par ecrasement manuel

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19920208

17Q First examination report despatched

Effective date: 19920527

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

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

Ref country code: GB

Effective date: 19930623

REF Corresponds to:

Ref document number: 69100138

Country of ref document: DE

Date of ref document: 19930729

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930623

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

Ref country code: DE

Payment date: 19940408

Year of fee payment: 4

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

Ref country code: DE

Effective date: 19960103

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: 20050419