EP1000246A1 - Perfectionnement d'un corps de pompe et procede de fabrication - Google Patents
Perfectionnement d'un corps de pompe et procede de fabricationInfo
- Publication number
- EP1000246A1 EP1000246A1 EP98941492A EP98941492A EP1000246A1 EP 1000246 A1 EP1000246 A1 EP 1000246A1 EP 98941492 A EP98941492 A EP 98941492A EP 98941492 A EP98941492 A EP 98941492A EP 1000246 A1 EP1000246 A1 EP 1000246A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- pump
- pump according
- transverse dimension
- projection
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 238000007493 shaping process Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F04B53/1002—Ball valves
- F04B53/101—Ball valves having means for limiting the opening height
-
- 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
- B05B11/1067—Pump inlet valves actuated by pressure
-
- 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
- B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49274—Piston ring or piston packing making
- Y10T29/49279—Piston ring or piston packing making including rolling or die forming, e.g., drawing, punching
Definitions
- the present invention relates to a pump and more particularly to an improvement of the intake valve of the pump as well as to a method of manufacturing such a pump.
- the invention relates to pumps of the type comprising in particular a substantially cylindrical body in one piece, provided, in its lower part, with a product inlet duct and with a valve.
- This valve is constituted in a known manner, of a cavity forming a seat and containing an element capable of moving between a low stop corresponding to a closed position of the intake duct and a high stop corresponding to the opening of said duct and when filling the pump body with the product.
- the stroke of the movable element which generally consists of a ball, must be adjusted so as to obtain regular delivery by the pump of identical and constant doses.
- the upper and lower stops must be positioned precisely.
- the upper stop consists of the lower turn of a helical return spring housed in the pump body.
- this spring creates problems of space and / or compatibility with the product.
- An alternative embodiment of this upper stop consists of fixing an insert in the lower part of the pump body above the movable element.
- Another solution involves the presence of retaining bosses made directly during the molding of the pump body.
- bosses protrude inside the pump body and delimit upwards the cavity in which the movable element is housed.
- the transverse dimension of these bosses measured from the internal wall of the body always remains small compared to the internal diameter of the cavity to allow the release of the body and the subsequent introduction of the movable element into the cavity.
- the section of these retaining bosses does not have an angular zone or a free edge undercut.
- the present invention aims to solve, satisfactorily, the technical problems posed by the prior art.
- a pump of the type comprising in particular a substantially cylindrical body in a single piece provided, in its lower part with a product inlet duct and a valve constituted a cavity containing an element capable of moving between a low stop corresponding to the closure of said intake duct and a high stop corresponding to the opening of said duct, characterized in that said high stop is formed of at least a discontinuous internal projection whose transverse dimension measured in the cavity is at least equal to 20% of the largest transverse dimension of the movable element.
- said projection has an inner edge whose generatrices are substantially parallel to the axis of the body.
- said movable element is a ball and said cavity is cylindroconical.
- said cavity has an upper orifice delimited laterally by the internal projection and the diameter is between 50% and 90% of the largest transverse dimension of the movable element.
- the upper face of said projection is wider than its lower face.
- said projection is surmounted, outside of said cavity, by an at least partially cylindrical cut whose generatrices are parallel to the axis of the body.
- the upper stop comprises four diametrically opposite projections two by two. These four projections are preferably separated by free sectors capable of letting the product pass.
- the free sectors have an angular length of between 30 ° and 80 °.
- Another object of the invention is a method of manufacturing a pump, characterized in that the pump body is produced, then at least one discontinuous internal projection is formed by shaping the internal wall of said body by means of a punch, the diameter of the head is between 110% and 140% of the largest transverse dimension of the mobile element.
- the transverse dimension of the internal projection, the diameter of the upper orifice of the cavity as well as the diameter of the head of the punch are parameters which are chosen with reference to the largest transverse dimension of the movable element but which also depend the penetration depth of the punch in the wall of the pump body. This depth is limited by the available wall thickness in the area intended for shaping and has been fixed, for the determination of the values of the above parameters, at 25% of the wall thickness of the pump body.
- said body is internally shaped by pushing with the punch, the constituent material of the wall downwards and inwards so as to partially close the cavity.
- said body is internally shaped with a punch with four diametrically opposite blades two by two.
- the movable element is introduced into the lower part of the body, prior to the formation of said internal projection.
- the pump of the invention thus comprises a particularly reliable and precise intake valve. With such a valve, the risks of jamming or escape of the movable element are practically nonexistent.
- the method of the invention makes it possible to produce projections whose transverse dimension is so large that they would not be possible by molding and which, moreover, would not allow the subsequent positioning of the mobile element.
- FIG. 1 shows a sectional view of a pump body according to the prior art
- FIG. 2a and 2b show detailed sectional views of an embodiment of a pump body according to the invention, respectively in the closed position and in the open position of the valve;
- Figure 4b shows a bottom view of the punch of Figure 4a
- FIG. 5 shows a sectional view of the pump body during the implementation of the method of the invention.
- the body 1 shown in FIG. 1 corresponds to that of a traditional pump A used, for example, for sprayers of liquids such as perfumes.
- the body 1 is substantially cylindrical and is made in one piece, for example, by injection molding of a thermoplastic material.
- the body 1 is provided in its lower part 1a with an intake duct 11 supplied with product from a reservoir (not shown) and possibly extended downwards by a dip tube.
- the intake duct 11 opens out through an orifice 11a on a valve made up of a cavity 10 containing a movable element such as a ball 2.
- the ball 2 is capable of moving axially between a low stop 12b corresponding to the closing of the conduit 11 and therefore to the closing of the valve, and a high stop 12a corresponding to the opening of said valve and the passage of the product towards the chamber. B of pump A.
- the lower stop 12b is formed by the frusto-conical wall of the cavity 10 against which the ball 2 comes into sealing contact.
- the upper stop 12a is formed here of retaining elements produced directly by molding, with the entire pump body, at the upper part of the cavity 10.
- These retaining elements are bosses which provide the ball
- each boss has a transverse dimension of at most 20% of the radius R of the ball 2, which is insufficient to guarantee perfect functioning of the valve.
- Figures 2a and 2b show partial sectional views of an embodiment of the body 1 of a pump according to the invention respectively in the closed and open position of the valve.
- the upper stop 12a is here formed of at least one internal projection 120 produced on the upper periphery of the cavity 10 and in a discontinuous manner by providing at least one lateral passage for the product around the ball 2.
- the transverse dimension X of the projection 12a measured in the cylindroconical cavity 10 is at least equal to 20% of the largest transverse dimension of the movable element and therefore of the diameter of the ball 2 or to 40% of its radius R.
- the cavity 10 is therefore delimited and partially closed in its upper part by a transverse wall portion whose total length corresponds to twice the transverse dimension X, ie at least 40% of the diameter of the ball 2 (or at 80% of the radius R), which guarantees a blocking in translation of the ball without jamming.
- the upper orifice 10a of the cavity 10 is therefore relatively narrow and its diameter is between 50% and 90% of the largest transverse dimension of the mobile element which here corresponds to the diameter of the ball 2.
- the projection 120 has an inner edge 120c whose generatrices are substantially parallel to the axis of the body 1.
- the projection 120 is surmounted, outside the cavity 10, by an at least partially cylindrical cutout 13 whose generatrices are substantially parallel to the axis of the body 1.
- the upper face 120a of the projection 120 which faces outwards from the cavity 10 is wider than the lower face 120b which is shown here for reasons of simplification, parallel to the upper face 120a and perpendicular to the internal wall of the cavity 10 in its upper part.
- the lower face 120b of the projection 120 is inclined, curvilinear or consists of a bulge but in no case has a zone of contact with the ball 2 in the high stop position to avoid any guiding or sliding. of the ball out of the cavity 10.
- Figures 3a and 3b correspond to an embodiment with four projections 120, 121, 122, 123 diametrically opposite two by two on the upper periphery of the cavity 10. In these figures, the ball 2 has not been shown.
- the cuts 13 are interrupted at the discontinuities of the projections 120, 121, 122, 123 to delimit free sectors 14.
- the profile of the internal wall of the pump body has not been modified and is therefore smooth and continuous, so as to present no obstacle from the inside to the outside of the cavity 10 for allow free passage of the product.
- the projections 120, 121, 122, 123 are here centered, on either side, on two perpendicular diameters.
- the pump A of the invention and in particular, the body 1 of said pump is produced in a traditional manner, for example, by injection molding of plastic or thermoplastic material.
- the ball 2 is introduced into the lower part 1a of the body 1 prior to shaping, when the internal wall is still uniform.
- the internal projection 120 is elastically deformable and / or flexible, it is then possible to proceed with the introduction of the ball after shaping, by deforming support on said projection.
- This shaping or stamping operation is carried out by means of a punch P such as that which is represented in FIGS. 4a and 4b.
- the punch P comprises a mandrel M carrying a head T.
- the mandrel M ensures the centering, the guiding and the setting of the punch in the pump body during the shaping.
- the head T ensures the shaping of the body by axial and forced translation of the mandrel M as shown in FIG. 5.
- the head T has at least one, and here four blades L intended to push the material on the wall of the body 1 above and around the ball 2, forming the cutouts 13, and the projections 120, 121 , 122, 123 as shown in FIG. 5.
- the diameter d of the head is between 110% and 140% of the diameter of the ball for a penetration depth of about 25% of the thickness of the wall of the body
- the geometry of the blades L shown in bottom view in FIG. 4b determines the subsequent geometry of the cutouts 13 of the projections 120, 121, 122, 123 and of the free sectors 14.
- the lower face C of the blades L acts by its outer edge in the manner of a knife or a tooth with respect to the plastic material by causing it to creep towards the inside of the head.
- the width and the length of the lower face C is determined beforehand as a function of the dimensions sought for the projections.
- the transverse dimension X of the protrusions to be produced will depend on the volume of material pushed down and inward by each of the blades L on the inner periphery of the cavity 10. This volume therefore corresponds to the volume delimited by the cutouts 13. However, this volume is itself a function of the diameter of the head T, the width x of the lower face C and the penetration depth, the angular length y and the height h of the blades L.
- the external face 1 of the blades L is straight and parallel to the axis of the mandrel M while their internal face is inclined towards the mandrel M and towards the center of the head T with an angle ⁇ close to 45 ° so as not to use the ball when working the head.
- the mandrel M has a face E intended to come into abutment against a shoulder lb of the pump body (see FIGS. 2a and 2b) to limit the sinking of the head T.
- the position of the upper stop 12a, and therefore, the stroke of the ball 2 will be determined as a function of the height h of the blades L relative to the face E of the mandrel.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Check Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9709861 | 1997-08-01 | ||
FR9709861A FR2766879B1 (fr) | 1997-08-01 | 1997-08-01 | Perfectionnement d'un corps de pompe et procede de fabrication |
PCT/FR1998/001691 WO1999006701A1 (fr) | 1997-08-01 | 1998-07-30 | Perfectionnement d'un corps de pompe et procede de fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1000246A1 true EP1000246A1 (fr) | 2000-05-17 |
EP1000246B1 EP1000246B1 (fr) | 2001-10-24 |
Family
ID=9509920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98941492A Expired - Lifetime EP1000246B1 (fr) | 1997-08-01 | 1998-07-30 | Perfectionnement d'un corps de pompe et procede de fabrication |
Country Status (16)
Country | Link |
---|---|
US (1) | US6343916B1 (fr) |
EP (1) | EP1000246B1 (fr) |
JP (1) | JP2001512214A (fr) |
CN (1) | CN1097167C (fr) |
AT (1) | ATE207578T1 (fr) |
AU (1) | AU8985098A (fr) |
BR (1) | BR9810848A (fr) |
CA (1) | CA2299520A1 (fr) |
DE (1) | DE69802195T2 (fr) |
DK (1) | DK1000246T3 (fr) |
ES (1) | ES2167925T3 (fr) |
FR (1) | FR2766879B1 (fr) |
HK (1) | HK1030446A1 (fr) |
PT (1) | PT1000246E (fr) |
TW (1) | TW408080B (fr) |
WO (1) | WO1999006701A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2849477B1 (fr) * | 2002-12-26 | 2006-05-19 | Rexam Dispensing Sys | Procede d'integration d'un clapet anti-retour a bille dans un corps de pompe |
US9475607B2 (en) * | 2008-10-01 | 2016-10-25 | Rehrig Pacific Company | Plastic beer keg |
CA2752830C (fr) | 2009-04-20 | 2018-01-02 | Rehrig Pacific Company | Fut a biere en matiere plastique |
US8967407B2 (en) * | 2009-07-27 | 2015-03-03 | Rehrig Pacific Company | Plastic beer keg |
US9434505B2 (en) * | 2010-01-26 | 2016-09-06 | Rehrig Pacific Company | Plastic beer keg |
DE112011101830T5 (de) | 2010-07-12 | 2013-03-14 | Illinois Tool Works Inc. | Filteranordnung |
EP2450290B1 (fr) * | 2010-11-09 | 2014-03-19 | Rehrig Pacific Company | Fût de bière en plastique |
EP2599744A3 (fr) | 2010-11-09 | 2013-09-25 | Rehrig Pacific Company | Clapet de fût de bière |
CN103062038B (zh) * | 2011-10-21 | 2015-12-23 | 兴必盛塑业(南通)有限公司 | 桌上型液体泵出机 |
FR2995801B1 (fr) * | 2012-09-27 | 2016-02-19 | Rexam Dispensing Sys | Procede de realisation d’un corps de pompe pour la distribution d’un produit fluide |
JP6319977B2 (ja) * | 2013-09-27 | 2018-05-09 | スリーエム イノベイティブ プロパティズ カンパニー | カプセルフィルタ |
AU2015203479A1 (en) | 2014-06-23 | 2016-01-21 | Rehrig Pacific Company | Plastic beer keg |
CN108591032B (zh) * | 2018-07-06 | 2024-02-02 | 上海如迪流体输送设备有限公司 | 卫生级气动隔膜泵 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2294568A (en) * | 1941-04-21 | 1942-09-01 | Karl P Neilsen | Ball valve cage |
US3044413A (en) * | 1959-09-21 | 1962-07-17 | Drackett Co | Pump pistons |
DK426978A (da) * | 1977-09-27 | 1979-03-28 | Unilever Nv | Haandbetjent pumpeforstoever |
US4197875A (en) * | 1978-05-16 | 1980-04-15 | Liquid Metronics Incorporated | Ball check valve |
JPS5573364A (en) * | 1978-11-25 | 1980-06-03 | Yoshino Kogyosho Co Ltd | Pump mechanism for manual small sized atomizer |
JP2826847B2 (ja) * | 1989-11-13 | 1998-11-18 | 株式会社吉野工業所 | 液体噴出器用シリンダ部材の弁室形成方法 |
JPH03161006A (ja) * | 1989-11-17 | 1991-07-11 | Hitachi Ltd | 吸着塔構造 |
JP2826848B2 (ja) * | 1989-11-21 | 1998-11-18 | 株式会社吉野工業所 | 液体噴出器用シリンダ部材の弁室形成方法 |
FR2764005B1 (fr) * | 1997-05-29 | 2004-12-10 | Sofab | Pompe a piston articule |
US6045008A (en) * | 1998-04-30 | 2000-04-04 | Calmar-Monturas, S.A. | Fluid pump dispenser |
-
1997
- 1997-08-01 FR FR9709861A patent/FR2766879B1/fr not_active Expired - Fee Related
-
1998
- 1998-07-30 AT AT98941492T patent/ATE207578T1/de not_active IP Right Cessation
- 1998-07-30 PT PT98941492T patent/PT1000246E/pt unknown
- 1998-07-30 US US09/463,400 patent/US6343916B1/en not_active Expired - Fee Related
- 1998-07-30 ES ES98941492T patent/ES2167925T3/es not_active Expired - Lifetime
- 1998-07-30 EP EP98941492A patent/EP1000246B1/fr not_active Expired - Lifetime
- 1998-07-30 DK DK98941492T patent/DK1000246T3/da active
- 1998-07-30 JP JP2000505420A patent/JP2001512214A/ja active Pending
- 1998-07-30 WO PCT/FR1998/001691 patent/WO1999006701A1/fr active IP Right Grant
- 1998-07-30 CA CA002299520A patent/CA2299520A1/fr not_active Abandoned
- 1998-07-30 CN CN98808732A patent/CN1097167C/zh not_active Expired - Fee Related
- 1998-07-30 DE DE69802195T patent/DE69802195T2/de not_active Expired - Fee Related
- 1998-07-30 AU AU89850/98A patent/AU8985098A/en not_active Abandoned
- 1998-07-30 BR BR9810848-4A patent/BR9810848A/pt not_active IP Right Cessation
- 1998-09-22 TW TW087112700A patent/TW408080B/zh not_active IP Right Cessation
-
2001
- 2001-02-23 HK HK01101327A patent/HK1030446A1/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9906701A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6343916B1 (en) | 2002-02-05 |
ES2167925T3 (es) | 2002-05-16 |
JP2001512214A (ja) | 2001-08-21 |
TW408080B (en) | 2000-10-11 |
FR2766879B1 (fr) | 1999-10-22 |
DE69802195D1 (de) | 2001-11-29 |
DE69802195T2 (de) | 2002-06-20 |
BR9810848A (pt) | 2000-07-25 |
WO1999006701A1 (fr) | 1999-02-11 |
PT1000246E (pt) | 2002-04-29 |
ATE207578T1 (de) | 2001-11-15 |
HK1030446A1 (en) | 2001-05-04 |
FR2766879A1 (fr) | 1999-02-05 |
DK1000246T3 (da) | 2002-02-18 |
AU8985098A (en) | 1999-02-22 |
EP1000246B1 (fr) | 2001-10-24 |
CN1269000A (zh) | 2000-10-04 |
CA2299520A1 (fr) | 1999-02-11 |
CN1097167C (zh) | 2002-12-25 |
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