EP0604888A1 - Dickstoffpumpe mit einem Drehschieberarmatur - Google Patents

Dickstoffpumpe mit einem Drehschieberarmatur Download PDF

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Publication number
EP0604888A1
EP0604888A1 EP19930120650 EP93120650A EP0604888A1 EP 0604888 A1 EP0604888 A1 EP 0604888A1 EP 19930120650 EP19930120650 EP 19930120650 EP 93120650 A EP93120650 A EP 93120650A EP 0604888 A1 EP0604888 A1 EP 0604888A1
Authority
EP
European Patent Office
Prior art keywords
chamber
pump according
discharge
piston
plug
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
EP19930120650
Other languages
English (en)
French (fr)
Other versions
EP0604888B1 (de
Inventor
Michel Deal
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.)
Manufacture Francaise des Pneumatiques Michelin SAS
Original Assignee
Sedepro SA
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 Sedepro SA filed Critical Sedepro SA
Publication of EP0604888A1 publication Critical patent/EP0604888A1/de
Application granted granted Critical
Publication of EP0604888B1 publication Critical patent/EP0604888B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0007—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having a rotating movement
    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87788—With valve or movable deflector at junction
    • Y10T137/8782—Rotary valve or deflector

Definitions

  • the present invention relates to piston pumps for very viscous materials. More particularly, it relates to the distribution members of these pumps.
  • the object of the present invention is to perfectly control the open and closed state of the discharge orifice in a piston pump used with a material extremely viscous like unvulcanized rubber. It is necessary to guarantee this perfect closure, while guaranteeing sufficient opening of the outlet orifice, without obstructing the flow of rubber when the pump is in the delivery phase.
  • Another object of the present invention is to provide a passage section opening sufficient not to oppose the flow of an extremely viscous material such as unvulcanized rubber when the pump is in the intake phase or in phase exhaust.
  • Another object of the present invention is to provide a pump having a minimum of moving parts, and the movements of which are as simple as possible to control.
  • a rotary distribution member which serves both to control the admission into the cylinder and to control the discharge from the cylinder.
  • the piston pump according to the invention has an inlet and an outlet. It comprises at least one piston sliding in a pumping chamber, between a top dead center and a bottom dead center. It comprises intake boosting organs, arranged in a supply chamber, ensuring a forced mechanical transfer of the rubber from a rubber introduction orifice arranged in the supply chamber, towards said pumping chamber, and is characterized in that it comprises a rotary distribution member inserted between said supply chamber and said pumping chamber, the distribution member comprising bores arranged and distributed to sometimes put the chamber in communication with the inlet, sometimes put the room in communication with the discharge, or to isolate the room of any communication with the inlet or the outlet, and in that it comprises means for controlling the rotational movement of the dispensing member and the synchronized movement of the piston.
  • said pumping chamber is a cylinder in which said piston slides, the cylinder having a light disposed beyond said top dead center, used both for admission and for discharge.
  • said piston is a plunger penetrating into said pumping chamber.
  • the preferred application envisaged for such a machine is a pump for raw rubber. However, other applications can be envisaged.
  • the piston slides in a cylinder, thanks to the fact that the only lumen is located at the top dead center, the cylinder itself has no drilling, which means that guiding the piston poses no difficulty. It is the same light that is used for both intake and exhaust. In this way, it can be as large as necessary, until it has a section comparable to that of the cylinder. This is very favorable for a good flow of the material as well towards the interior of the cylinder on admission, as out of the cylinder during the delivery. There is no longer a compromise to be sought between admission and refoulement.
  • the invention offers the possibility of adapting the distribution member to distribute the flow output of the pump between several pipes without the need to use a separate distributor or to multiply the pumps used.
  • FIG. 1 is a general diagram of the invention.
  • Figure 2 is a flat development of the outer surface of the dispensing member.
  • FIG. 3 is a flat development of the sheath corresponding to the dispensing member illustrated in FIG. 2.
  • Figure 4 is a flat development of the outer surface of the dispensing member of another alternative embodiment of the invention.
  • FIG. 5 is a flat development of the sheath corresponding to the dispensing member of FIG. 4.
  • FIG. 6 is a side view of the dispensing member illustrated in FIGS. 4 and 5.
  • FIG. 7 is a front view of the member shown in FIG. 6.
  • FIG. 8 illustrates another variant embodiment of the invention.
  • FIG. 9 illustrates yet another alternative embodiment of the invention.
  • the pump comprises boosting members arranged in a supply chamber, to ensure a forced mechanical transfer of rubber from an introduction orifice 80 arranged in the supply chamber, towards the lateral face 12 of the dispensing member 1 against which the rubber is pressed under pressure.
  • This is for example a screw 8 of the kind that is found in conventional extruders.
  • a light 4 provides communication between the cylinder 2 and the inlet or outlet.
  • the dispensing member is a plug having a surface of revolution 10 (here cylindrical) and two lateral faces 12 and 13 on either side thereof. The side faces are in this example flat.
  • the plug is rotatably mounted in a sheath whose shape corresponds to the shape of the surface of revolution 10.
  • the sheath is here a cylinder 11.
  • the light 4 opens into the internal surface of the sheath 11. The admission of the pump results in one 12 of the side faces and the discharge leads to the other 13 of the side faces.
  • the axis of rotation of the dispensing member is here perpendicular to the sliding movement of the piston 3. Holes are distributed all along the surface of revolution of the dispensing member 1.
  • the holes take for example the form d 'recesses 5 notching one of the side faces and the surface of revolution 10. These holes pass over the light 4. They put it in communication alternately with the intake and then with the discharge.
  • the movements of rotation of the distribution member and of translation of the piston must of course be synchronized.
  • the reduction ratio existing between these two members depends on the number of bores arranged on the outer cylindrical surface 10 of the dispensing member 1. If for example for a piston cycle, the dispensing member makes a full turn, then there is a hole communicating towards the admission and a hole communicating towards the discharge.
  • Figures 2 and 3 provide a better understanding of the operation of the pump through a developed representation of the surface 10 of the dispensing member ( Figure 2) and the corresponding surface of the sleeve ( Figure 3).
  • the distribution member 12 having the appearance of a cylinder, the development of its outer cylindrical surface is a rectangle.
  • the width D thereof corresponds to the thickness of the dispensing member 1 in the direction of its axis of rotation.
  • the edge between the two vertical lines separated by the distance D corresponds to the part of the inner surface of the sleeve 11 in contact with the dispensing member.
  • the length of the rectangle is 2 ⁇ R, R being the radius of the dispensing member 1.
  • the dimensions of the bore formed by the sleeve are of course identical, apart from the functional clearance.
  • the width 1 of the light 4 is materialized by two parallel broken lines.
  • the development L of the light appears in FIG. 3.
  • the slice between the two vertical lines separated by the distance 1 corresponds to the part of the exterior surface of the dispensing member which passes in front of the light 4 .
  • Figure 2 shows the surface of the four recesses 5, two of which communicate with the inlet on the left side of the figure, and two others communicate with the discharge on the right side of the figure.
  • the recess 5 and the lumen 4 overlap exactly in the direction of the width of the figures to maximize the transfer of materials. This is not what is shown in schematic figures 2 and 3 in order to clearly understand the operating limits of the invention. The admission continues until the light 4 has not completely passed the first recess 5.
  • the surface 10 of the distribution member 1 obscures the light 4. To properly separate the intake from the discharge, it is therefore sufficient that the distance separating the end of the first recess 5 (corresponding to the intake) of the start of the second recess 5 (corresponding to the discharge), that is to say at least equal, and preferably very slightly greater than the length L of the light 4.
  • the distance separating each time the end of the intake recess from the start of the exhaust recess and vice versa must be at least L.
  • the simplest embodiment of the invention consists in making the screw 8 and the dispensing member integral.
  • the booster screw 8 is in direct engagement with the dispensing member 1, whose axis of rotation coincides with that of the screw 8. If we have two crank turns of the piston 3 a feeding screw turn 8, then one realizes on the member distribution 1 two recesses 5 at the inlet and two recesses 5 at the outlet.
  • the shape of the light 4 can be adapted as a function of considerations relating to the flow of the material to be pumped, and / or as a function of considerations relating to the machining of the parts.
  • This shape can approach, or even correspond to the shape of cylinder 2.
  • Only the length L of the light in the direction of development must be chosen or adjusted according to the length in the direction of development of the holes made on the surface of the distribution body. Apart from these constraints, the invention offers the possibility of adopting multiple variants of shapes.
  • Figures 4 and 5 are also diagrams giving a developed representation of the dispensing member ( Figure 4) and the corresponding sleeve ( Figure 5).
  • the distribution unit has four intake holes and four delivery holes.
  • the intake holes are all produced by recesses 5 opening on the lateral face 12 at the periphery 13 thereof (see FIGS. 6 and 7).
  • the distribution member makes it possible to distribute the flow discharged by the pump between two different pipes.
  • one of the lateral faces here, that 13 corresponding to the discharge, which is that shown in FIG. 6
  • has several concentric and separate tracks here, two
  • each track being in communication with a pipe. different, each track communicating with at least one hole. It is of course possible to produce concentric tracks on the intake side or on the exhaust side according to the desired use for the pump.
  • track means the arrangement in a circle, that is to say always at the same radial level, of the outlet orifice of all the holes intended to collect (intake) or conduct (discharge) the material to or from the same pipeline.
  • a fourth hole 5R extends into a pipe 51, internal to the dispensing member, which leads to an orifice 52 constituting a second track, concentric with the first.
  • the pumped material is distributed in a ratio of 3/4 - 1/4 between two different delivery pipes: a first annular collector collects the material at the periphery of the lateral face 13 of the distribution member, and a second collector, radially inside the first, collects the material discharged through the pipe 51.
  • FIG. 8 another alternative embodiment of a pump for raw rubber is shown, in which a plunger 9 can penetrate a pumping chamber 90.
  • the pumping chamber 90 appears twice, associated each time with the piston 9 in a different phase of operation, as will be explained below.
  • the dispensing member is a plug 1 ′ having a surface of revolution 100 and two lateral faces 12 and 13 on either side thereof. The side faces are flat.
  • the plug 1 ' is rotatably mounted in a sleeve 11' whose shape corresponds to the shape of the surface of revolution 100.
  • the pumping chamber 90 opens onto the surface of the sleeve 11 '.
  • the plug seen in radial section, has the appearance of an "H" whose transverse branch 15 includes the axis of rotation of the plug, the sheath forming a protrusion penetrating between the vertical branches 16 of the "H".
  • the pumping chamber 90 is constituted by a channel parallel to the axis of rotation of the plug, produced in said protuberance 11 right through it, and the holes 91, 92 are arranged in the vertical branches of the "H” , on either side of the transverse branch 15.
  • FIG. 9 illustrates an alternative embodiment in which the recesses 5 of a 1 '' cylindrical plug, here similar in appearance to that shown in Figures 1 to 3, are always in communication with several at the same time with the intake , or respectively with the repression.
  • a pumping chamber 90 opening onto the surface of the sleeve associated with the valve 1 '' in several places, here in two places 20 and 21.
  • a plunger 9 ensures the admission and the discharge of the material into and out of the pumping chamber 90.
  • the present invention makes it possible to produce a distribution with a single moving part, and with a very simple movement since it is a rotation. Those skilled in the art can easily see all the possible applications, and adapt the implementation of the invention to the envisaged application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Multiple-Way Valves (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP19930120650 1992-12-31 1993-12-22 Dickstoffpumpe mit einem Drehschieberarmatur Expired - Lifetime EP0604888B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9216053 1992-12-31
FR9216053A FR2699966A1 (fr) 1992-12-31 1992-12-31 Machine à piston comportant un organe de distribution rotatif.

Publications (2)

Publication Number Publication Date
EP0604888A1 true EP0604888A1 (de) 1994-07-06
EP0604888B1 EP0604888B1 (de) 1996-06-12

Family

ID=9437395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930120650 Expired - Lifetime EP0604888B1 (de) 1992-12-31 1993-12-22 Dickstoffpumpe mit einem Drehschieberarmatur

Country Status (11)

Country Link
US (1) US5466132A (de)
EP (1) EP0604888B1 (de)
JP (1) JP3559057B2 (de)
CN (1) CN1042166C (de)
AT (1) ATE139303T1 (de)
BR (1) BR9305100A (de)
CA (1) CA2112730A1 (de)
DE (1) DE69303153T2 (de)
ES (1) ES2089689T3 (de)
FR (1) FR2699966A1 (de)
RU (1) RU2121604C1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911374A1 (fr) * 2007-01-11 2008-07-18 Michelin Soc Tech Pompe volumetrique a piston et procede de controle de debit de cette pompe
FR3022958A1 (fr) * 2014-06-30 2016-01-01 Michelin & Cie Pompe volumetrique a piston et a moyen de distribution rotatif

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001073933A (ja) 1999-09-01 2001-03-21 Bridgestone Corp 容積型押出装置および粘性材料の押出方法
FR2832467B1 (fr) * 2001-11-19 2004-01-30 Pcm Dosys Pompe doseuse a boisseau
US7980197B2 (en) * 2006-11-03 2011-07-19 Illinois Tool Works, Inc. Method and apparatus for dispensing a viscous material on a substrate
EP1925811B1 (de) * 2006-11-23 2009-09-16 Willibrord Lösing Filterproduktion GmbH Pumpe für ein fluides Medium, insbesondere für den manuellen Einsatz in mit Dieselkraftstoff betriebenen Brennkraftmaschinen
US9897080B2 (en) * 2012-12-04 2018-02-20 General Electric Company Rotary control valve for reverse osmosis feed water pump with energy recovery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR545198A (fr) * 1921-12-22 1922-10-06 Anciens Etablissements Berger Perfectionnements apportés aux pompes à piston
EP0400496A1 (de) * 1989-06-01 1990-12-05 Sedepro Volumetrische Pumpe und Verfahren zum volumetrischen Pumpen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952440A (en) * 1909-05-26 1910-03-15 Burrell D H & Co Air-pump.
US1932636A (en) * 1932-04-13 1933-10-31 S R Dresser Mfg Co Rotary valve for compressors
US2516388A (en) * 1946-12-20 1950-07-25 Humphreys Railways Inc Pump
US2696343A (en) * 1953-06-15 1954-12-07 Mallory Res Co Internal-combustion engine with compressor
US2944288A (en) * 1957-01-28 1960-07-12 Owens Illinois Glass Co Combination plasticizer, extruder and injection cylinder with recirculation
US3012286A (en) * 1959-03-25 1961-12-12 Owens Illinois Glass Co Method of making plastic articles
FR1317853A (de) * 1961-03-20 1963-05-08
US3192914A (en) * 1963-02-25 1965-07-06 Kopczyk Thomas Power and pumping apparatus
US3552440A (en) * 1969-01-09 1971-01-05 Hercules Concrete Pumps Inc Valve for controlling flow of concrete
US4167374A (en) * 1977-09-13 1979-09-11 Smith Thomas H Pump and valve arrangement
JPS58210381A (ja) * 1982-05-31 1983-12-07 Hino Motors Ltd エアコンプレツサ
BR8906480A (pt) * 1988-03-30 1990-09-04 Aliva Ag Bomba de pistao de cilindro multiplo

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR545198A (fr) * 1921-12-22 1922-10-06 Anciens Etablissements Berger Perfectionnements apportés aux pompes à piston
EP0400496A1 (de) * 1989-06-01 1990-12-05 Sedepro Volumetrische Pumpe und Verfahren zum volumetrischen Pumpen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911374A1 (fr) * 2007-01-11 2008-07-18 Michelin Soc Tech Pompe volumetrique a piston et procede de controle de debit de cette pompe
FR3022958A1 (fr) * 2014-06-30 2016-01-01 Michelin & Cie Pompe volumetrique a piston et a moyen de distribution rotatif
WO2016001187A1 (fr) * 2014-06-30 2016-01-07 Compagnie Generale Des Etablissements Michelin Pompe volumétrique à piston et à moyen de distribution rotatif
US10400756B2 (en) 2014-06-30 2019-09-03 Compagnie Generale Des Etablissements Michelin Positive-displacement piston pump and rotary distribution means

Also Published As

Publication number Publication date
DE69303153D1 (de) 1996-07-18
CN1091499A (zh) 1994-08-31
JPH06213145A (ja) 1994-08-02
US5466132A (en) 1995-11-14
CA2112730A1 (fr) 1994-07-01
JP3559057B2 (ja) 2004-08-25
RU2121604C1 (ru) 1998-11-10
ES2089689T3 (es) 1996-10-01
FR2699966A1 (fr) 1994-07-01
EP0604888B1 (de) 1996-06-12
DE69303153T2 (de) 1996-11-21
ATE139303T1 (de) 1996-06-15
BR9305100A (pt) 1994-08-16
CN1042166C (zh) 1999-02-17

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