EP0437139A1 - Vordruckdosierpumpe - Google Patents

Vordruckdosierpumpe Download PDF

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Publication number
EP0437139A1
EP0437139A1 EP90403739A EP90403739A EP0437139A1 EP 0437139 A1 EP0437139 A1 EP 0437139A1 EP 90403739 A EP90403739 A EP 90403739A EP 90403739 A EP90403739 A EP 90403739A EP 0437139 A1 EP0437139 A1 EP 0437139A1
Authority
EP
European Patent Office
Prior art keywords
ring
piston
pump
differential piston
pump body
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
EP90403739A
Other languages
English (en)
French (fr)
Other versions
EP0437139B1 (de
Inventor
Claude Jouillat
Michel Brunet
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 Technique de Pulverisation STEP
Original Assignee
Societe Technique de Pulverisation STEP
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 Technique de Pulverisation STEP filed Critical Societe Technique de Pulverisation STEP
Priority to AT90403739T priority Critical patent/ATE94430T1/de
Publication of EP0437139A1 publication Critical patent/EP0437139A1/de
Application granted granted Critical
Publication of EP0437139B1 publication Critical patent/EP0437139B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1061—Pump priming means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer

Definitions

  • the present invention relates to an improvement of a precompression dosing pump which is used, in the prior art, for dispensing liquid or pasty products in the form of sprays. And, in this case, it will improve the priming while ensuring the simplicity of assembly of the pump.
  • the precompression dosing pumps have many advantages.
  • the emission of the fluid product essentially results from a mechanical actuation. This eliminates the need for a propellant, such as freon, which is accused of being an atmospheric pollutant, or even nitrogen, which occupies a dead volume in the container.
  • a propellant such as freon
  • nitrogen which occupies a dead volume in the container.
  • the latter also does not need to be particularly reinforced to contain a product under high pressure.
  • the metering function is also very useful in the cosmetic or pharmaceutical industry, that is to say when the quantity of product delivered each time the pump is actuated must be sufficiently precise.
  • the spring 5 ensures the closing of the emission channel 33 by again pressing the needle 41 of the differential piston 4 against the throttle 32 of the rod 31. By releasing moreover, the external compression force, the spring 5 causes the pistons 3 and 4 to rise. The pump chamber 23 sees its volume increase again. There is therefore a depression. As soon as the skirt 42 of the differential piston 4 releases the sleeve 24, this causes the product to be sucked in from the reservoir into the chamber 23. The product which it now contains is none other than the next dose which will be emitted during a subsequent actuation of the pump.
  • This priming method has several drawbacks. In the first place, and this whatever the nature of the product to be emitted, this pump is of a delicate manufacture.
  • the gadroon 25 is none other than a small rib barely projecting from the surface of the sleeve 24 (typically 4/100 mm). Also the molds inside which the pump body 2 is poured they see the corresponding notch dull quickly after a few uses alternating with cleaning.
  • a discharge of the air initially contained in the pump chamber was then sought towards the outside of the tank.
  • S.T.E.P. in a European patent application no. 89-401 449.7 under priority of three French applications: FR88-07337, FR88-16722 and FR89-06817) proposed for this purpose a priming assembly comprising elastic means as well as a cylindrical piece.
  • This assembly is adapted to be housed in the emission channel 33 of the first piston 3 within an enlargement of its section which extends from the seat 32 of the usual outlet valve to near the mouth of the rod 31.
  • the cylindrical part is able to collaborate both with the needle 41 of the differential piston 4 and with the rod 31 in order to constitute, at the same level of the usual valve, a second outlet valve.
  • the latter opens in the low position of the pistons (cf. the priming position of FIG. 2) while the differential piston 4, in abutment against the sleeve 24, pushes the cylindrical part against the return action of the means elastic housed in the rod 31.
  • this priming assembly gives the pump all the advantages which result from the discharge of air outside, it remains inconvenient essentially from the point of view of the assembly of the parts. Compared to the pump of the prior art, this indeed requires several additional operations to set up the elastic means and the cylindrical part within the widening of the emission channel 33 provided for this purpose. These operations are also liable, due to their delicacy, to result in poor centering of the part which can become jammed across the channel 33 ... In other words, the presence of the priming assembly ultimately leads to an increase in the rate of improper pumps to be rejected.
  • the present invention aims to develop an improvement of the precompression dosing pump mentioned so far which allows the discharge of the air initially contained in the pump chamber to the outside and which, at the same time , lends itself to more favorable assembly conditions both by a reduction in the number of operations to be carried out and by an almost automatic positioning of the parts relative to each other.
  • said means for abutting said ring of said ring consist of an annular shoulder of the inner wall of said pump body.
  • said centering finger extends to the level of the extreme edge of said skirt.
  • said step of said differential piston is inclined on said axis of revolution to form a truncated cone, the smallest section of which is on the side opposite to said reservoir.
  • said each head has an ovoid shape.
  • said each head has an extreme hook curved towards the inside of said ring as well as a branching of said tongue which extends from its back parallel to said axis of revolution.
  • said base of said first piston may prove to be advantageous for said base of said first piston to have an annular notch adapted to receive the free end of said ramification of said each head, said first contact point then being at the bottom of said notch so that its distance from said axis of revolution does not vary.
  • said ring is molded in a plastic material adapted to spring.
  • each head 104 is relatively close to each other, at a radius of the axis of the ring 10 less than the radius of the ring 101. According to the first form of this improvement which is the subject of the figures 4 to 8, each head 104 finally has a somewhat ovoid shape.
  • each of the heads 104 is in contact with the horizontal base 34 of the piston 3 at a point bearing the reference number 130 and with the step 44 of the differential piston 4 at a point bearing the number 140.
  • the tabs 102 and the ring 101 extend on their side around the differential piston 4.
  • most of the interposition ring 10 is fitted around the widened part of the differential piston 4, the needle 41 of the latter being engaged between the various heads 104 while its skirt 42 emerges from the ring 101 in the opposite direction.
  • the fitting is also provided to guarantee a large clearance between ring 10 and piston 4. If necessary, the shape of the latter is modified for this purpose compared to that preferred in the prior art.
  • the differential piston 4 in fact comprises guide fins 46 which guarantee its centering in the pump body 2 throughout its stroke.
  • centering is ensured due to the fitting within the ring 10 mentioned above.
  • the outer radius of the ring 101 is such that the ring 10 can engage within the pump body 2 and circulate along its inner wall with a slight friction.
  • the latter is of the order of the friction of the sealing lips carried by the base 34 of the piston 3 so that the actuation of the pump provided with this improvement is not made significantly more difficult.
  • the axis of the ring 10 once it has been placed in the pump body 2, does it remain coincident with the axis of the pump.
  • the support of the heads 104 on the step 44 inclined at the various contact points 140 then determines the self-centering of the differential piston 4.
  • this self-centering is further favored by the extension of the finger 47 which projects on the differential piston 4 at the center of its skirt 42.
  • this finger 47 is used to hold the spring 5. It preferably extends here to level of the sealing lip 43.
  • the spring 5 which surrounds it thus prevents any loss of coaxiality.
  • this particular structure of the finger 47 has another advantage which is located in terms of the hydraulic operation of the pump. It will be explained in more detail in the following paragraphs which are more particularly devoted to this aspect of the invention.
  • the small driving depth between these two successive abutments corresponds to the bending undergone by the tongues 102 of the ring 10 that the piston 3 compresses. It therefore determines a certain damping effect at the end of the piston stroke. Furthermore, given the inclination of the tongues 102, this bending is inevitably accompanied by a translation of the heads 104 which approach the axis of the pump. In other words, a ring deformation mechanism 10 is caused which corresponds to the tightening of the heads 104 from one another, the tongues 102 bending towards the axis of the ring 101 and tending in some way to close on it.
  • the return spring 5 can again relax. It causes the pistons 3 and 4 and the ring 10 to be raised, always interposed between them. From the first moments, the tabs 102 relax, causing at the same time the distance of the heads 104 from the axis of the pump and therefore the closure of the outlet valve. Then the ring 10 leaves the shoulder 25. The friction of its ring 101 against the wall of the pump body 2 constantly brakes its ascent while the heads 104 are on the contrary driven towards the top 21 of the pump body 2. This guarantees a good straightening of the tongues 102 and, by this, a support of the needle 41 against the constriction 32 sufficient to let the elasticity of the parts play and ensure the sealing of the outlet valve.
  • the extended finger 47 manifests the second advantage introduced above.
  • the finger 47 actually occupies a large part of the internal volume of the sleeve 24. Also, while it goes up, a relatively large space is cleared which does not stop to grow quickly. This already causes a suction effect of the product which passes through the opening in the bottom 22 of the pump body 2 from the reservoir to the sleeve 24. And the product so called has no difficulty in penetrating in the pump chamber 23 as soon as the sleeve 24 is released by the skirt 42.
  • This aspect of the present improvement is particularly advantageous in the case, first of all, of pasty products. These are increasingly packaged in tanks with a deformable envelope while a precompression metering pump without air intake is fixed thereto in a leaktight manner. It is then sufficient to carry out this fixing while the pump is maintained in its low position. In this way, the interior of the sleeve 24 is occupied by the finger 47 and contains a very reduced quantity of air. After securing the pump, its relaxation already leads to a penetration of the paste into the pump body 2. The priming as described above only completes this penetration, the air evacuated outside the tank being replaced in the pump chamber by a dose of product.
  • the extended finger 47 is also of interest for reservoirs of liquid products maintained at atmospheric pressure. It manifests itself particularly when the maximum volume of the chamber is significantly less than the volume of the dip tube. Because the latter is initially filled with air just like the room. And, at the end of priming, product should have been sucked through the entire tube. The suction effect caused by the sharp movement of the extended finger 47 manages to give this result, the volume involved within the sleeve 24 coming to supplement that, weaker, of the pump chamber 23.
  • FIG. 9 illustrates another embodiment of the present improvement.
  • an interposing ring 10 whose tongues 102 have new heads. These consist first of all of a sort of hook 105 curved inwards. And it is the end of this hook 105 which is in contact at the point referenced 140 with the inclined step 44 of the differential piston 4.
  • the tongue 102 is provided with a sort of branching 106. This extends from the outside back of the tongue 102 according to a direction parallel to the axis of the pump. Its free end is in contact at the point referenced 130 with the piston 3.
  • this second ring 10 is able to collaborate with the pistons 3 and 4 in an identical manner to the previous one, that is to say by wedge effect, another mechanism is here possible. It could certainly come to add to the corner effect as the man of the art will understand it easily on reading the following paragraphs.
  • this second embodiment provides that the end of the branches 106 are engaged in an annular notch 35 formed at the base 34 of the piston 3. In other words, there is no longer any question of seeing the contact points 130 move over this base 34, the ramifications 106 being blocked by the edges of the notch 35.
  • this pivoting is noted ⁇ 10, the index recalling that it is about the ring 10. It occurs around a point C close to the root of the ring on the ring 101, the latter does not deforming so to speak not. However, the end of the hook 105 is located farther from point C than the branch 106 is on the tongue 102. With ⁇ 10 equal pivoting, the displacement vertical ⁇ 4 of the hook 105 is therefore greater than that ⁇ 3 of the branch 106. The differential piston 4 therefore moves more than the piston 3 between the moment when the ring 10 meets the shoulder 25 and that when the differential piston 4 meets the sleeve 24. And this guarantees the distance of the needle 41 from the seat 32, or the desired opening of the outlet valve. In summary, this second embodiment of the ring 10 this time uses a lever arm effect.
  • the ring 10 intervenes by wedge effect, lever arm effect or the two combined effects, it is essential that it be sufficiently flexible. It is therefore preferably molded in a plastic material adapted to spring. The molded ring is mounted in one operation by engagement within the pump body following the differential piston. And, as pointed out above, the centering of the ring relative to the pistons is automatic. This is how the present improvement perfectly solves the problem posed.
EP90403739A 1990-01-08 1990-12-21 Vordruckdosierpumpe Expired - Lifetime EP0437139B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90403739T ATE94430T1 (de) 1990-01-08 1990-12-21 Vordruckdosierpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9000116 1990-01-08
FR9000116A FR2656901B1 (fr) 1990-01-08 1990-01-08 Perfectionnement d'une pompe-doseuse a precompression pour en ameliorer l'amorcage et garantir sa simplicite d'assemblage.

Publications (2)

Publication Number Publication Date
EP0437139A1 true EP0437139A1 (de) 1991-07-17
EP0437139B1 EP0437139B1 (de) 1993-09-15

Family

ID=9392563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403739A Expired - Lifetime EP0437139B1 (de) 1990-01-08 1990-12-21 Vordruckdosierpumpe

Country Status (7)

Country Link
US (1) US5105994A (de)
EP (1) EP0437139B1 (de)
JP (1) JPH04298687A (de)
AT (1) ATE94430T1 (de)
CA (1) CA2033736A1 (de)
DE (1) DE69003373T2 (de)
FR (1) FR2656901B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5566865A (en) * 1993-12-22 1996-10-22 Valois S.A. Manual atomizing pump with adjustable dosage
EP0791398A1 (de) * 1996-02-22 1997-08-27 Caideil M.P. Teoranta Austragvorrichtung für Medien
FR2795779A1 (fr) * 1999-06-30 2001-01-05 Valois Sa Pompe a precompression amelioree
FR2906233A1 (fr) * 2006-09-27 2008-03-28 Valois Sas Dispositif de distribution de produit fluide.

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664182B1 (fr) * 1990-07-09 1992-10-09 Valois Pompe-doseuse pour pulverisateur sous pression avec securite intrinseque.
FR2665733A1 (fr) * 1990-08-07 1992-02-14 Valois Perfectionnement d'une pompe-doseuse a precompression permettant d'en ameliorer le rendement par admission precoce dans la chambre de pompe.
BR9201113A (pt) * 1992-03-30 1993-10-05 Jack Brakarz Aperfeicoamento em micro-bomba atomizadora de liquidos
US5687883A (en) * 1995-11-16 1997-11-18 Su; Cheng-Yuan Inductor valve of an atomizer
US6050457A (en) * 1995-12-06 2000-04-18 The Procter & Gamble Company High pressure manually-actuated spray pump
WO1998025111A1 (es) * 1996-12-05 1998-06-11 Olegnowicz W Jaime Bomba mecanica impelente de liquidos en forma atomizada, con medios de sello no deslizantes
JP3731192B2 (ja) * 1997-03-24 2006-01-05 伸晃化学株式会社 液体噴射用のポンプ機構
ES2165789B1 (es) * 1999-12-27 2003-10-01 Saint Gobain Calmar Sa Atomizador de bomba de precompresion.
US7147135B2 (en) * 2002-07-25 2006-12-12 Valois Sas Manually actuated fluid dispenser pump
US7255248B2 (en) * 2002-08-29 2007-08-14 Emsar, Inc. Plug style pump
NZ524938A (en) * 2003-03-24 2005-10-28 Simcro Tech Ltd Dispenser, for treating animals, with damping to avoid shock waves
FR2854822B1 (fr) * 2003-05-16 2005-06-24 Rexam Dispensing Sys Distributeur de produit liquide ou en gel
US8464962B2 (en) * 2005-02-22 2013-06-18 Showerstart, Llc 3-stage temperature control valve
CN112516358B (zh) * 2020-12-01 2022-09-02 上海芜玮金智智能科技有限公司 一种消毒杀菌设备夹持联动式控制系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025224A2 (de) * 1979-09-10 1981-03-18 Ing. Erich Pfeiffer GmbH & Co. KG Handbetätigte Pumpe
FR2626851A1 (fr) * 1988-02-05 1989-08-11 Step Soc Tech Pulverisation Dispositif pour faciliter le remplissage des vaporisateurs
EP0345132A1 (de) * 1988-06-02 1989-12-06 Societe Technique De Pulverisation Step Vordruck Dosierpumpe mit verbessertem Ansaugverhalten

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133259A5 (de) * 1971-04-08 1972-11-24 Step
DE3514719A1 (de) * 1985-04-24 1986-10-30 Ing. Erich Pfeiffer GmbH & Co KG, 7760 Radolfzell Schubkolbenpumpe zur ausgabe von medien
IT1205155B (it) * 1987-06-19 1989-03-15 Coster Tecnologie Speciali Spa Dispsotivo con tasto incorporante un mezzo intercettazione,per l'erogazione di liquidi in forma nebulizzata

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025224A2 (de) * 1979-09-10 1981-03-18 Ing. Erich Pfeiffer GmbH & Co. KG Handbetätigte Pumpe
FR2626851A1 (fr) * 1988-02-05 1989-08-11 Step Soc Tech Pulverisation Dispositif pour faciliter le remplissage des vaporisateurs
EP0345132A1 (de) * 1988-06-02 1989-12-06 Societe Technique De Pulverisation Step Vordruck Dosierpumpe mit verbessertem Ansaugverhalten

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5566865A (en) * 1993-12-22 1996-10-22 Valois S.A. Manual atomizing pump with adjustable dosage
EP0791398A1 (de) * 1996-02-22 1997-08-27 Caideil M.P. Teoranta Austragvorrichtung für Medien
AU712492B2 (en) * 1996-02-22 1999-11-11 Caideil M.P. Teoranta Dispenser for media
KR100458173B1 (ko) * 1996-02-22 2005-01-15 카이데일 엠. 피. 테오란타 매체방출장치
FR2795779A1 (fr) * 1999-06-30 2001-01-05 Valois Sa Pompe a precompression amelioree
WO2001002100A1 (fr) * 1999-06-30 2001-01-11 Valois S.A. Pompe a precompression amelioree
FR2906233A1 (fr) * 2006-09-27 2008-03-28 Valois Sas Dispositif de distribution de produit fluide.
WO2008037910A1 (fr) * 2006-09-27 2008-04-03 Valois Sas Dispositif de distribution de produit fluide.
US7770759B2 (en) 2006-09-27 2010-08-10 Valois S.A.S Liquid dispenser device
CN101534958B (zh) * 2006-09-27 2012-06-13 瓦卢瓦有限合伙公司 流体产品分配装置

Also Published As

Publication number Publication date
FR2656901A1 (fr) 1991-07-12
ATE94430T1 (de) 1993-10-15
CA2033736A1 (en) 1991-07-09
DE69003373D1 (de) 1993-10-21
DE69003373T2 (de) 1994-03-17
US5105994A (en) 1992-04-21
EP0437139B1 (de) 1993-09-15
JPH04298687A (ja) 1992-10-22
FR2656901B1 (fr) 1993-02-19

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