EP4031288A1 - Pompe à précompression haute pression - Google Patents
Pompe à précompression haute pressionInfo
- Publication number
- EP4031288A1 EP4031288A1 EP20785811.9A EP20785811A EP4031288A1 EP 4031288 A1 EP4031288 A1 EP 4031288A1 EP 20785811 A EP20785811 A EP 20785811A EP 4031288 A1 EP4031288 A1 EP 4031288A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- spring
- outlet valve
- sleeve
- piston
- 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
Links
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
- B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
- B05B11/1039—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being mechanically opened after a defined accumulation stroke
-
- 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
- B05B11/1066—Pump inlet valves
- B05B11/107—Gate valves; Sliding valves
-
- 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
- B05B11/1094—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 having inlet or outlet valves not being actuated by pressure or having no inlet or outlet 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
- B05B11/01—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
- B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
-
- 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
Definitions
- the present invention relates to a pump for dispensing metered quantities of fluid. More particularly, the pump is a precompression pump in which the fluid product is dispensed at a high pressure of at least 15 bars.
- the object of the present invention is to provide a pump which does not reproduce the aforementioned drawbacks.
- the object of the present invention is in particular to provide a pump in which no residual drop remains at the outlet of the pump after each actuation.
- Another object of the present invention is to provide a pump which delivers the fluid product at a higher pressure compared to traditional pumps.
- Another object of the present invention is to provide such a pump which is simple and easy to manufacture and assemble, and reliable in its use.
- Another object of the present invention is to provide such a pump which ensures complete and reproducible distribution of the contents of the pump chamber with each actuation, regardless of the user's actuation speed.
- the present invention therefore relates to a fluid product dispensing pump, comprising a piston integral with an actuating rod and sliding in a pump body comprising a pump chamber defined between an inlet valve and an outlet valve.
- said outlet valve comprising an outlet valve element which slides during actuation in a sealed manner in the pump chamber
- said pump chamber comprising passage means such that, at the end of actuation of the pump, said outlet valve element cooperates in an unsealed manner with said passage means to open said outlet valve to allow the expulsion of the product contained in the pump chamber
- said inlet valve comprising a sliding inlet valve element after closing the inlet valve in a sleeve of the pump body, said sleeve having a reduced diameter and containing a spring resting on the one hand on said inlet valve element and on the other hand be started on a bottom of said sleeve, said spring, in addition to expelling the product, also returning the piston to its rest position
- said outlet valve element being formed by a separate part which is
- said sleeve comprises a shoulder defining said means of passage of said outlet valve.
- said second spring expands and moves said outlet valve element axially downward with respect to said piston, generating a vacuum which sucks in the residual liquid which remains in and / or near said actuating rod after each actuation.
- said sleeve of the pump body in which said inlet valve element slides comprises external reinforcing ribs.
- said fluid product is dispensed at a pressure of at least 15 bars.
- the present invention also relates to a fluid dispenser device comprising a pump as described above.
- FIG. 1 is a schematic view in cross section of a pump according to an advantageous embodiment, in the rest position
- FIG. 2 is a view similar to that of FIG. 1, in the actuated position
- FIG. 3 is an enlarged detail view of a part in figure 2.
- top and bottom refer to the upright position of the pump shown in the figures.
- axial refers to the longitudinal central axis of the pump.
- the pump according to the invention comprises a pump body 3 in which slides a piston 1 integral with an actuating rod 2 on which the user presses to actuate the pump.
- the piston 1 slides in a pump chamber 5 defined in the pump body 3 between a valve inlet 11 and an outlet valve 12.
- a fixing ring 4 for example crimpable, screwable or snap-fit, enables the pump to be fixed to a reservoir.
- the inlet valve 11, open in the rest position of the pump, as shown in Figure 1, is formed by an inlet valve member 10 movable in the pump body 3 during actuation of the pump. Said inlet valve element 10 cooperates in a sealed manner from the start of actuation of the pump with a sleeve 9 of the pump body 3 to close the inlet valve 11.
- a spring 20 is supported on the one hand. on the inlet valve element 10 and on the other hand on the bottom of said sleeve 9.
- the outlet valve 12 comprises an outlet valve element 39 made in such a way that, when the pump is actuated, it is only opened at the end of the actuation of the pump to allow the product to be expelled. contained in the pump chamber. This opening is made at the level of passage means 40 formed at the level of a radial internal shoulder of the pump chamber 5.
- the objective of said passage means 40 is to form at least one fluid passage when the element of outlet valve 39, which during the entire actuation stroke of the pump cooperates in a sealed manner with the pump chamber 5, comes to the end of the actuation stroke at said passage means 40.
- the expulsion of the product contained in the pump chamber 5 is carried out independently of the actuation speed exerted by the user.
- the inlet valve element 10 cooperates with the spring 20 which, upon actuation of the pump, is compressed by the movement of the inlet valve element 10 under the effect of the pressure. pressure created in the pump chamber.
- said compressed spring 20 At the end of the pump actuation stroke, when the outlet valve 12 is open, said compressed spring 20 will be suddenly released, so that the product contained in the pump chamber is expelled through said spring.
- said spring 20 of the inlet valve 11 also acts as a return spring for the pump, thus returning the piston 1 to its rest position after expulsion of the product.
- the side wall of the pump chamber 5 can be reinforced by inserting a sleeve 50 into the pump body 3.
- This sleeve 50 can be integral, for example in one piece, with the fixing ring 4.
- This sleeve 50 thus forms a double wall in the pump chamber 5, which makes it possible to avoid deformation of the internal side wall of the pump chamber 5 because of the high pressure created by the pump during actuation.
- This sleeve 50 advantageously comprises the radial shoulder forming passage means 40 which defines the outlet valve.
- a sealed weld 55 for example by ultrasound, preferably between two radial flanges respectively of said pump body 3 and of said fixing ring 4 which incorporates the sleeve 50.
- the sleeve 9 which cooperates with the inlet valve element 10, axially extends the pump body 3 downwards in the orientation of the figures and contains said inlet valve element 10 and said spring 20.
- the sleeve 9 has a reduced diameter with respect to the pump body 3. It advantageously comprises external reinforcing ribs 90. This implementation of the sleeve 9 makes it possible to reduce its radial dimensions.
- the sleeve 9 of the pump could have a diameter of less than 4.2 mm, advantageously less than 4 mm, preferably 3.9 mm.
- the pump therefore significantly improves the sealing capabilities of the various sealed parts, namely the piston 1, the outlet valve element 39 and the inlet valve element 10.
- a spring having a greater force typically at least 20 N, advantageously 25 N.
- the present invention makes it possible to provide a precompression pump capable of distributing the fluid product at a pressure of at least 15 bars, advantageously around 20 bars, which is much higher. than traditional pumps and even superior to valves operating with propellant gas.
- the actuation force of such a pump with a spring at 25 N and the surface S of 12 mm 2 is less than 60 N, advantageously about 50 N, which remains acceptable.
- Such a pump is in particular suitable for being associated with a spray nozzle comprising a plurality of micro-holes, in particular with a hole diameter of less than 5 ⁇ m, or even less than 2 ⁇ m.
- the outlet valve element 39 is formed by a separate part which is movably inserted into the piston 1, with the interposition of a second spring 60.
- This second spring 60 exerts, in the rest position shown in Figure 1, a force greater than that of the spring 20, so that in this rest position, the second spring 60 biases the outlet valve element 39 axially towards the bottom, away from said piston 1.
- the second spring 60 can again relax, which moves the outlet valve member 39 axially downward with respect to said piston 1, generating a vacuum which sucks in the residual liquid which remains in and / or near the actuating rod 2 after each actuation.
- the present invention therefore makes it possible to re-aspirate after each actuation this small quantity of residual fluid, thus preventing any risk of partial or total clogging of a spray nozzle arranged downstream of the actuating rod 2.
- the actuator rod 2 is pushed downwards, which moves the piston 1, the second spring 60, the outlet valve member 39 and the inlet valve member 10 also towards the bottom relative to the pump body 3.
- the inlet valve 11 closes, by sealed cooperation between the lips of the inlet valve member 10 and the internal cylindrical surface of the sleeve 9, while the outlet valve 12 remains closed.
- the spring 20 is then compressed under the effect of the inlet valve element 10 which slides in the sleeve 9.
- the sleeve 9 having a reduced diameter with respect to the sleeve 50 arranged in the pump body 3, and the fluid contained in the pump chamber 5 being incompressible, this compression of the spring 20 occurs relatively easily, despite the high force of said spring 20.
- the outlet valve member 39 When approaching the end of actuation, the outlet valve member 39 approaches the shoulder 40 of the outlet valve, to open the latter.
- FIG. 2 illustrates the actuated position, with the outlet valve open and therefore the contents of the pump chamber 5 which are expelled under the effect of the spring 20 which expands.
- the fluid product is then expelled with a pressure of at least 15 bars, advantageously of at least 20 bars.
Landscapes
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1910258A FR3100724B1 (fr) | 2019-09-17 | 2019-09-17 | Pompe à précompression haute pression |
| PCT/FR2020/051596 WO2021053291A1 (fr) | 2019-09-17 | 2020-09-16 | Pompe à précompression haute pression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4031288A1 true EP4031288A1 (fr) | 2022-07-27 |
| EP4031288B1 EP4031288B1 (fr) | 2023-09-13 |
Family
ID=68501835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20785811.9A Active EP4031288B1 (fr) | 2019-09-17 | 2020-09-16 | Pompe à précompression haute pression |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12208404B2 (fr) |
| EP (1) | EP4031288B1 (fr) |
| CN (1) | CN114364615B (fr) |
| FR (1) | FR3100724B1 (fr) |
| WO (1) | WO2021053291A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120270810B (zh) * | 2025-06-06 | 2025-08-05 | 莱芜金山矿产资源有限公司 | 一种用于生产铁精粉的存储设备及工艺 |
Family Cites Families (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2149669A5 (fr) * | 1971-08-19 | 1973-03-30 | Step | |
| ES409434A1 (es) * | 1971-12-16 | 1976-01-01 | Pfeiffer Kunststofftech Gmbh | Perfeccionamientos en los dispositivos para emitir liquidoso productos pastosos o cremosos. |
| US3761022A (en) * | 1972-04-04 | 1973-09-25 | H Kondo | A spring pressure accumulative spray device |
| FR2320788A2 (fr) * | 1975-08-14 | 1977-03-11 | Pulverisation Step Ste Tech | Perfectionnements apportes aux vaporisateurs |
| FR2260391B2 (fr) * | 1974-02-08 | 1976-11-26 | Step | |
| CA1008825A (en) * | 1974-03-28 | 1977-04-19 | William E. Warren | Pump assembly for an atomizing piston pump |
| US4022354A (en) * | 1976-02-17 | 1977-05-10 | The Risdon Manufacturing Company | Accumulator release pump |
| US4029261A (en) * | 1976-04-30 | 1977-06-14 | Jaime Olegnowicz | Piston displacement liquid spray pumps |
| FR2403465A2 (fr) * | 1977-09-16 | 1979-04-13 | Valois Sa | Pompe manuelle a piston pour distribution ou pulverisation |
| IT1092596B (it) * | 1978-02-09 | 1985-07-12 | Ruscitti Tommaso | Pompetta a mano per dispensare liquidi micronizzati a pressione prestabilita |
| US4325499A (en) * | 1980-10-31 | 1982-04-20 | Ethyl Products Company | Extended spray pump |
| US4325500A (en) * | 1980-10-31 | 1982-04-20 | Ethyl Products Company | Extended spray pump |
| US4643338A (en) * | 1983-05-24 | 1987-02-17 | Yoshino Kogyosho Co., Ltd. | Manual liquid dispenser |
| DE3445562A1 (de) * | 1984-12-14 | 1986-06-19 | Ing. Erich Pfeiffer GmbH & Co KG, 7760 Radolfzell | Schubkolben-pumpe fuer wirkstoff-spender |
| US4693675A (en) | 1986-01-16 | 1987-09-15 | The Pharmasol Corporation | Non-throttling discharge pump |
| GB8625491D0 (en) | 1986-10-24 | 1986-11-26 | Bespak Plc | Discharge pump assembly |
| EP0345132B1 (fr) * | 1988-06-02 | 1993-09-22 | Societe Technique De Pulverisation Step | Pompe-doseuse à précompression à amorçage amélioré |
| US5038965A (en) * | 1990-04-06 | 1991-08-13 | Spruhventile Gmbh | Pump dispenser for delivering a predetermined dosage regardless of method of actuation |
| US5147073A (en) * | 1991-02-11 | 1992-09-15 | Spruhventile Gmbh | Fluid pump dispenser for pharmaceutical use |
| US5217148A (en) * | 1991-02-11 | 1993-06-08 | Spruhventile Gmbh | Pharmaceutical pump dispenser |
| FR2686377B1 (fr) * | 1992-01-20 | 1994-03-25 | Valois | Pompe a precompression perfectionnee. |
| US5655688A (en) * | 1994-10-19 | 1997-08-12 | Aptargroup, Inc. | Atomizing pump with high stroke speed enhancement and valve system therefor |
| SI9600118A (en) * | 1995-04-13 | 1996-10-31 | Monturas Sa | Precompression pump sprayer |
| US6170713B1 (en) * | 1998-10-28 | 2001-01-09 | Emson, Inc. | Double spring precompression pump with priming feature |
| FR2795779B1 (fr) | 1999-06-30 | 2001-09-14 | Valois Sa | Pompe a precompression amelioree |
| US6145710A (en) * | 1999-08-09 | 2000-11-14 | Carter; Miro S. | Metered output fluid dispenser |
| BR0101069A (pt) * | 2000-03-15 | 2001-11-06 | Saint Gobain Calmar Sa | Distribuidor de bomba de fluìdo |
| DE10334032B4 (de) * | 2003-07-18 | 2005-06-23 | Ing. Erich Pfeiffer Gmbh | Ventileinrichtung |
| FR2910449B1 (fr) * | 2006-12-22 | 2009-03-06 | Rexam Dispensing Systems Sas | Pompe compacte a capacite de rotulage du gicleur par rapport au piston. |
| ITMI20091648A1 (it) * | 2009-09-25 | 2011-03-26 | Modapack S R L | "gruppo per la pressurizzazione e l'erogazione di sostanze fluide per una pompa ad azionamento manuale e pompa comprendente detto gruppo" |
| FR3002293B1 (fr) | 2013-02-15 | 2015-04-10 | Aptar France Sas | Pompe a precompression amelioree. |
| CN110053863A (zh) * | 2019-05-29 | 2019-07-26 | 浙江晟祺实业有限公司 | 一种喷头结构 |
-
2019
- 2019-09-17 FR FR1910258A patent/FR3100724B1/fr active Active
-
2020
- 2020-09-16 US US17/760,961 patent/US12208404B2/en active Active
- 2020-09-16 CN CN202080062631.XA patent/CN114364615B/zh active Active
- 2020-09-16 EP EP20785811.9A patent/EP4031288B1/fr active Active
- 2020-09-16 WO PCT/FR2020/051596 patent/WO2021053291A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3100724A1 (fr) | 2021-03-19 |
| US20220379331A1 (en) | 2022-12-01 |
| FR3100724B1 (fr) | 2023-03-24 |
| US12208404B2 (en) | 2025-01-28 |
| CN114364615B (zh) | 2023-10-24 |
| EP4031288B1 (fr) | 2023-09-13 |
| CN114364615A (zh) | 2022-04-15 |
| WO2021053291A1 (fr) | 2021-03-25 |
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