EP0017552B1 - Pump with pistons and cylinders in axial arrangement - Google Patents

Pump with pistons and cylinders in axial arrangement Download PDF

Info

Publication number
EP0017552B1
EP0017552B1 EP80400385A EP80400385A EP0017552B1 EP 0017552 B1 EP0017552 B1 EP 0017552B1 EP 80400385 A EP80400385 A EP 80400385A EP 80400385 A EP80400385 A EP 80400385A EP 0017552 B1 EP0017552 B1 EP 0017552B1
Authority
EP
European Patent Office
Prior art keywords
pump
conduits
liquid
axis
discharge
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.)
Expired
Application number
EP80400385A
Other languages
German (de)
French (fr)
Other versions
EP0017552A1 (en
Inventor
Gérard Pere
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.)
Creusot Loire SA
Original Assignee
Creusot Loire 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 Creusot Loire SA filed Critical Creusot Loire SA
Priority to AT80400385T priority Critical patent/ATE363T1/en
Publication of EP0017552A1 publication Critical patent/EP0017552A1/en
Application granted granted Critical
Publication of EP0017552B1 publication Critical patent/EP0017552B1/en
Expired 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders

Definitions

  • the present invention relates to a pump comprising several capacities for pumping the liquid formed by cylinders and pistons, the arrangement of which is said to be in barrels.
  • the present invention is particularly applicable to pumps for pumping sludge.
  • a suction valve is placed upstream of a pumping capacity so as to open under the effect of the vacuum created by the suction stroke of the piston.
  • a discharge valve is placed downstream of each pumping capacity so as to open during the discharge stroke of the piston, the suction valve being closed.
  • the liquid pumping capacities are connected to a common suction pipe via pipes, the circulation of the liquid being controlled by the suction valves.
  • the pumping capacities are also connected to a common delivery pipe by pipes, the circulation of the liquid being controlled by the delivery valves.
  • the object of the present invention is to limit the drawbacks linked, in known pumps, to the pipes which serve to channel the liquid up to the pumping capacities and from these capacities to the common evacuation pipe.
  • the subject of the invention is a pump of the barrel type in which the use of pipes serving to channel the liquid to be displaced is avoided, upstream and downstream of the pumping capacities.
  • the liquid to be moved is channeled in short lengths of pipes between on the one hand the general intake piping and the capacities and on the other hand between these capacities and the general delivery piping. This results in an equal distribution of the liquid to be moved in the conduits and in some cases allows the elimination of the booster pump.
  • the risks of cavitation due to pulsations can be reduced Maintenance is easy thanks to the use of easily removable cylinder heads which are pierced with conduits channeling the liquid to be moved and are equipped with valves.
  • the size of the pump according to the invention is also smaller than that of known pumps.
  • the pump according to the invention comprises several pumping capacities formed by cylinders fixed to a frame in a barrel arrangement and by pistons capable of sliding in these cylinders under the action of a drive mechanism, in which the liquid is channeled after the general suction piping by a central distribution channel and by radial conduits which communicate downstream of suction valves with said pumping capacities downstream of which discharge valves control the flow of the liquid which is channeled by radial collecting ducts which open into a collecting channel connected to the general discharge piping and it is essentially characterized in that it comprises a central cylinder head pierced on the one hand with said central distribution channel and with said radial ducts and on the other hand, said radial collecting ducts and the delivery collecting duct and lateral cylinder heads on which are fitted with suction and discharge valves and which are pierced with conduits communicating with the radial conduits and with the pumping capacities, each of the lateral cylinder heads being applied with sealing against a bearing surface of the central cylinder head.
  • the pump comprises a group of cylinders 11 which are fixed to a frame 2 according to a so-called barrel arrangement, the axes of these cylinders being generators of a fictitious cylinder whose axis is identified 21.
  • a piston is engaged in each cylinder 12.
  • This piston is provided with a seal which seals with the bore of the cylinder.
  • This piston and this cylinder together form, on the side of the active face 14 of the piston, a pumping capacity 15 which contains the liquid to be displaced.
  • Each piston is secured to a piston rod 13 which is linked, optionally by couplings, to a slide 16 guided in a jacket 17 secured to the frame.
  • Each slide 16 is linked to a connecting rod 31 by a ball joint 311.
  • This connecting rod is linked by a ball joint 312 to a plate 32 forming part of a drive mechanism 3 known per se.
  • the plate 32 is inclined on the axis 21 so that the articulations 312 of the connecting rods are contained in a plane inclined with respect to the axis 21.
  • This plate is animated by a nutation movement around the axis 21 by the drive mechanism.
  • Such a drive mechanism adapted to the reciprocating movement of the pistons 12 is for example described in French patent 2,211,090 or in French patent 2,271,459.
  • the liquid to be moved enters the pump through a general suction pipe 81 and exits through a general delivery pipe 82. These two pipes are coaxial with the axis 21.
  • the liquid to be moved is channeled, between the piping 81 and the piping 82, in a central cylinder head 4 and in side cylinder heads 5.
  • the central cylinder head 4 is fixed to the frame by tie rods 91.
  • the side cylinder heads 5 are applied by means of bearings planes against flat bearing surfaces 43 of the central cylinder head, these bearing surfaces being parallel to the axis 21.
  • the lateral cylinder heads are moreover applied by flanges 54 against the frame 2.
  • the central cylinder head comprises a central distribution channel 41 which is connected coaxially to the general suction piping 81.
  • This channel 41 supplies bypass conduits 42 which radiate all around the axis 21 so that the outlets at the bearing surfaces 43 are located in a plane perpendicular to this axis 21.
  • the liquid flows in these conduits 42 from the center outwards, in the direction of the arrows.
  • the liquid to be moved circulates in each side cylinder head 5, being controlled by a suction valve 61 and by a discharge valve 71.
  • the suction valve 61 is associated with a seat 62 against which it is applied by a spring 64.
  • the suction valve 61 moves along an axis perpendicular to the axis 21.
  • the assembly can be disassembled by means of a plug 63 which screws into the body of the lateral cylinder head.
  • the discharge valve 71 is associated with a seat 72 against which it is applied by a spring 74.
  • the discharge valve moves along an axis parallel to the axis 21. All of the members associated with the discharge valve can be removed thanks to a plug 73 screwing into the body of the side bolt.
  • Each lateral cylinder head comprises, upstream of the seat 62 associated with the suction valve, a radial channel 51 which extends a bypass duct 42 of the central cylinder head.
  • the seal between the conduits 42 and 51 is ensured by seals.
  • This radial conduit communicates downstream of the valve 61 with a pumping capacity 15 via a conduit 52 which is parallel to the axis 21.
  • This conduit 52 communicates with a chamber 56 between the suction valve 61 and the discharge valve 71.
  • the flow of the liquid, downstream of the chamber 56, is controlled by the discharge valve 71. Downstream of this valve 71, the liquid is channeled in a radial discharge conduit 53.
  • the central cylinder head is pierced radially by manifold conduits 45 which open into a collecting channel 44.
  • This channel 44 is connected coaxially to the general delivery pipe 82.
  • Each collecting pipe 45 is connected to a radial delivery pipe 53 of a cylinder head lateral. The seal, at the lateral surfaces, between the conduits 45 and 53 is ensured by seals.
  • the axis of movement of the suction valve 61 is perpendicular to the axis 21, the axis of movement of the discharge valve 71 being parallel to this axis 21.
  • the central cylinder head 4 and the side cylinder heads 5 can be obtained by molding.
  • the central cylinder head 4 can possibly be made in two parts.
  • the pistons 12 are driven in an alternating movement which sucks in and discharges the liquid supplied by the general suction pipe 81.
  • the suction valve 61 of a side cylinder head 5 rises under the effect of the vacuum created by the suction stroke of the piston associated with this cylinder head.
  • a quantity of liquid coming from the bypass conduits 42 is then admitted into the pumping capacity 15.
  • the suction valve 61 is applied against the associated seat 62.
  • the delivery valve 71 moves away from the seat associated so as to allow the flow of liquid in the discharge conduits 53 and 45. Because the pistons 12 are offset along the axis 21 of the pump, the flow of liquid in the general discharge piping 82 is relatively regular in time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A reciprocating pump comprising several pumping volumes formed by cylinders fixed to a frame in an axial piston arrangement, and by pistons capable of sliding in the cylinders under the action of a driving mechanism, and including a ducting assembly conveying the liquid to be displaced from a general intake conduit to the pumping volumes, through intake valves, and from the pumping volumes to a general delivery conduit, through delivery valves. The ducting assembly comprises both a central cylinder head through which passes a central distribution channel connected to the general intake conduit and supplying off-take passages which radiate around it to the side bearing surfaces, and side cylinder heads through which run passages conveying the liquid.

Description

La présente invention se rapporte à une pompe comportant plusieurs capacités de pompage du liquide formées par des cylindres et des pistons dont l'agencement est dit en barillet.The present invention relates to a pump comprising several capacities for pumping the liquid formed by cylinders and pistons, the arrangement of which is said to be in barrels.

La présente invention s'applique notamment à des pompes servant au pompage de boues.The present invention is particularly applicable to pumps for pumping sludge.

On connaît une pompe décrite par exemple dans le brevet Français 904061 comprenant plusieurs capacités de pompage formées chacune d'un cylindre et d'un piston se déplaçant dans l'alésage de ce cylindre. Les cylindres sont fixés au bâti selon une disposition dite "en barillet", les pistons étant déplacés selon les génératrices d'un cylindre fictif. Ces pistons sont solidaires de tiges qui sont articulées à des bielles elles-mêmes articulées à un plateau incliné par rapport à l'axe longitudinal de la pompe. Le plateau incliné est animé d'un mouvement de nutation par un mécanisme d'entrainement.We know a pump described for example in French patent 904061 comprising several pumping capacities each formed by a cylinder and a piston moving in the bore of this cylinder. The cylinders are fixed to the frame in a so-called "barrel" arrangement, the pistons being displaced according to the generatrices of a fictitious cylinder. These pistons are integral with rods which are articulated to connecting rods themselves articulated to a plate inclined relative to the longitudinal axis of the pump. The inclined plate is animated by a nutation movement by a drive mechanism.

La circulation du liquide, en amont et en aval de chaque capacité de pompage, est contrôlée par les clapets assurant un fonctionnement à simple effet. Un clapet d'aspiration est placé en amont d'une capacité de pompage de manière à s'ouvrir sous l'effet de la dépression créée par la course d'aspiration du piston. Un clapet de refoulement est placé en aval de chaque capacité de pompage de manière à s'ouvrir lors de la course de refoulement du piston, le clapet d'aspiration étant fermé.The circulation of the liquid, upstream and downstream of each pumping capacity, is controlled by the valves ensuring a single-effect operation. A suction valve is placed upstream of a pumping capacity so as to open under the effect of the vacuum created by the suction stroke of the piston. A discharge valve is placed downstream of each pumping capacity so as to open during the discharge stroke of the piston, the suction valve being closed.

Les capacités de pompage du liquide sont raccordées à un tuyau d'aspiration commun par l'intermédiaire de tuyauteries, la circulation du liquide étant contrôlée par les clapets d'aspiration. Les capacités de pompage sont par ailleurs raccordées à un tuyau de refoulement commun par des tuyauteries, la circulation du liquide étant contrôlée par les clapets de refoulement.The liquid pumping capacities are connected to a common suction pipe via pipes, the circulation of the liquid being controlled by the suction valves. The pumping capacities are also connected to a common delivery pipe by pipes, the circulation of the liquid being controlled by the delivery valves.

Il est nécessaire de déposer les tuyauteries mentionnées précédemment lorsque les clapets et les sièges de clapet doivent être changés. Or la durée de vie de ces éléments est relativement brève et leur remplacement doit pouvoir être effectué rapidement et facilement.It is necessary to remove the pipes mentioned above when the valves and valve seats need to be changed. However, the life of these elements is relatively short and their replacement must be able to be carried out quickly and easily.

La présente invention a pour objet de limiter les inconvénients liés, dans les pompes connues, aux tuyauteries qui servent à canaliser le liquide jusqu'aux capacités de pompage et de ces capacités jusqu'au tuyau commun d'évacuation. L'invention a pour objet une pompe du type à barillet dans laquelle on évite l'emploi de tuyauteries servant à canaliser le liquide à déplacer, en amont et en aval des capacités de pompage. Le liquide à déplacer est canalisé dans des conduits de faibles longueurs entre d'une part la tuyauterie générale d'admission et les capacités et d'autre part entre ces capacités et la tuyauterie générale de refoulement. Ceci entraine une égale répartition du liquide à déplacer dans les conduits et permet dans certains cas la suppression de la pompe de gavage. Par ailleurs les risques de cavitation dûs aux pulsations peuvent être réduits L'entretien est facile grâce à l'emploi de culasses facilement démontables qui sont percées de conduits canalisant le liquide à déplacer et sont équipées de clapets. L'encombrement de la pompe selon l'invention est par ailleurs plus faible que celui des pompes connues.The object of the present invention is to limit the drawbacks linked, in known pumps, to the pipes which serve to channel the liquid up to the pumping capacities and from these capacities to the common evacuation pipe. The subject of the invention is a pump of the barrel type in which the use of pipes serving to channel the liquid to be displaced is avoided, upstream and downstream of the pumping capacities. The liquid to be moved is channeled in short lengths of pipes between on the one hand the general intake piping and the capacities and on the other hand between these capacities and the general delivery piping. This results in an equal distribution of the liquid to be moved in the conduits and in some cases allows the elimination of the booster pump. In addition, the risks of cavitation due to pulsations can be reduced Maintenance is easy thanks to the use of easily removable cylinder heads which are pierced with conduits channeling the liquid to be moved and are equipped with valves. The size of the pump according to the invention is also smaller than that of known pumps.

La pompe selon l'invention comporte plusieurs capacités de pompage formes par des cylindres fixés à un bâti selon une disposition en barillet et par des pistons susceptibles de coulisser dans ces cylindres sous l'action d'un mécanisme d'entraînement, dans laquelle le liquide est canalisé après la tuyauterie générale d'aspiration par un canal central de distribution et par des conduits radiaux qui communiquent en aval de clapets d'aspiration avec lesdites capacités de pompage en aval desquelles des clapets de refoulement contrôlent l'écoulement du liquide qui est canalisé par des conduits collecteurs radiaux qui débouchent dans un canal collecteur raccordé à la tuyauterie générale de refoulement et elle est essentiellement caractérisée par le fait qu'elle comporte une culasse centrale percée d'une part dudit canal central de distribution et desdits conduits radiaux et d'autre part desdits conduits collecteurs radiaux et du conduit collecteur de refoulement et des culasses latérales sur lesquelles sont montés les clapets d'aspiration et de refoulement et qui sont percées de conduits communiquant avec les conduits radiaux et avec les capacités de pompage, chacune des culasses latérales étant appliquée avec étanchéité contre une portée de la culasse centrale.The pump according to the invention comprises several pumping capacities formed by cylinders fixed to a frame in a barrel arrangement and by pistons capable of sliding in these cylinders under the action of a drive mechanism, in which the liquid is channeled after the general suction piping by a central distribution channel and by radial conduits which communicate downstream of suction valves with said pumping capacities downstream of which discharge valves control the flow of the liquid which is channeled by radial collecting ducts which open into a collecting channel connected to the general discharge piping and it is essentially characterized in that it comprises a central cylinder head pierced on the one hand with said central distribution channel and with said radial ducts and on the other hand, said radial collecting ducts and the delivery collecting duct and lateral cylinder heads on which are fitted with suction and discharge valves and which are pierced with conduits communicating with the radial conduits and with the pumping capacities, each of the lateral cylinder heads being applied with sealing against a bearing surface of the central cylinder head.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés.

  • La figure 1 est une coupe longitudinale de la pompe selon l'invention.
  • La figure 2 est une vue en perspective écfa- tée d'une partie de la pompe représentée par la figure 1.
The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the accompanying drawings.
  • Figure 1 is a longitudinal section of the pump according to the invention.
  • FIG. 2 is an exploded perspective view of a part of the pump represented by FIG. 1.

En se référant aux figures 1 et 2, la pompe comporte un groupe de cylindres 11 qui sont fixés sur un bâti 2 selon une disposition dite en barillet, les axes de ces cylindres étant des génératrices d'un cylindre fictif dont l'axe est repéré 21. Dans chaque cylindre est engagé un piston 12. Ce piston est muni d'une garniture d'étanchéité qui assure l'étanchéité avec l'alésage du cylindre. Ce piston et ce cylindre forment ensemble, du côté de la face active 14 du piston, une capacité de pompage 15 qui contient le liquide à déplacer. Chaque piston est solidaire d'une tige de piston 13 qui est liée, éventuellement par des accouplements, à un coulisseau 16 guidé dans une chemise 17 solidaire du bâti. Chaque coulisseau 16 est lié à une bielle 31 par une articulation à rotule 311. Cette bielle est liée par une articulation à rotule 312 à un plateau 32 faisant partie d'un mécanisme d'entrainement 3 connu en soi. Le plateau 32 est incliné sur l'axe 21 de manière que les articulations 312 des bielles soient contenues dans un plan incliné par rapport à l'axe 21. Ce plateau est animé d'un mouvement de nutation autour de l'axe 21 par le mécanisme d'entraine- ment. Un tel mécanisme d'entrainement adapté au déplacement alternatif des pistons 12 est par exemple décrit dans le brevet français 2.211.090 ou dans le brevet français 2.271.459.Referring to Figures 1 and 2, the pump comprises a group of cylinders 11 which are fixed to a frame 2 according to a so-called barrel arrangement, the axes of these cylinders being generators of a fictitious cylinder whose axis is identified 21. A piston is engaged in each cylinder 12. This piston is provided with a seal which seals with the bore of the cylinder. This piston and this cylinder together form, on the side of the active face 14 of the piston, a pumping capacity 15 which contains the liquid to be displaced. Each piston is secured to a piston rod 13 which is linked, optionally by couplings, to a slide 16 guided in a jacket 17 secured to the frame. Each slide 16 is linked to a connecting rod 31 by a ball joint 311. This connecting rod is linked by a ball joint 312 to a plate 32 forming part of a drive mechanism 3 known per se. The plate 32 is inclined on the axis 21 so that the articulations 312 of the connecting rods are contained in a plane inclined with respect to the axis 21. This plate is animated by a nutation movement around the axis 21 by the drive mechanism. Such a drive mechanism adapted to the reciprocating movement of the pistons 12 is for example described in French patent 2,211,090 or in French patent 2,271,459.

Le liquide à déplacer entre dans la pompe par une tuyauterie générale d'aspiration 81 et sort par une tuyauterie générale de refoulement 82. Ces deux tuyauteries sont coaxiales à l'axe 21.The liquid to be moved enters the pump through a general suction pipe 81 and exits through a general delivery pipe 82. These two pipes are coaxial with the axis 21.

Le liquide à déplacer est canalisé, entre la tuyauterie 81 et la tuyauterie 82, dans une culasse centrale 4 et dans des culasses latérales 5. La culasse centrale 4 est fixée au bâti par des tirants 91. Les culasses latérales 5 sont appliquées par des portées planes contre des portées plane 43 de la culasse centrale, ces portées étant parallèles à l'axe 21. Les culasses latérales sont par ailleurs appliquées par des brides 54 contre le bâti 2.The liquid to be moved is channeled, between the piping 81 and the piping 82, in a central cylinder head 4 and in side cylinder heads 5. The central cylinder head 4 is fixed to the frame by tie rods 91. The side cylinder heads 5 are applied by means of bearings planes against flat bearing surfaces 43 of the central cylinder head, these bearing surfaces being parallel to the axis 21. The lateral cylinder heads are moreover applied by flanges 54 against the frame 2.

La culasse centrale comporte un canal central de distribution 41 qui est raccordé coaxialement à la tuyauterie générale d'aspiration 81. Ce canal 41 alimente des conduits de dérivation 42 qui rayonnent tout autour de l'axe 21 de manière que les sorties au niveau des portées 43 soient situées dans un plan perpendiculaire à cet axe 21. Le liquide s'écoule dans ces conduits 42 du centre vers l'extérieur, selon le sens des flèches.The central cylinder head comprises a central distribution channel 41 which is connected coaxially to the general suction piping 81. This channel 41 supplies bypass conduits 42 which radiate all around the axis 21 so that the outlets at the bearing surfaces 43 are located in a plane perpendicular to this axis 21. The liquid flows in these conduits 42 from the center outwards, in the direction of the arrows.

Le liquide à déplacer circule dans chaque culasse latérale 5 en étant contrôlé par un clapet d'aspiration 61 et par un clapet de refoulement 71. Le clapet d'aspiration 61 est associé à un siège 62 contre lequel il est appliqué par un ressort 64. Le clapet d'aspiration 61 se déplace selon un axe perpendiculaire à l'axe 21. L'ensemble peut être démonté grâce à un bouchon 63 qui se visse dans le corps de la culasse latérale. Le clapet de refoulement 71 est associé à un siège 72 contre lequel il est appliqué par un ressort 74. Le clapet de refoulement se déplace selon un axe parallèle à l'axe 21. L'ensemble des organes associés au clapet de refoulement peut être démonté grâce à un bouchon 73 se vissant dans le corps de la culasse latérale.The liquid to be moved circulates in each side cylinder head 5, being controlled by a suction valve 61 and by a discharge valve 71. The suction valve 61 is associated with a seat 62 against which it is applied by a spring 64. The suction valve 61 moves along an axis perpendicular to the axis 21. The assembly can be disassembled by means of a plug 63 which screws into the body of the lateral cylinder head. The discharge valve 71 is associated with a seat 72 against which it is applied by a spring 74. The discharge valve moves along an axis parallel to the axis 21. All of the members associated with the discharge valve can be removed thanks to a plug 73 screwing into the body of the side bolt.

Chaque culasse latérale comporte, en amont du siège 62 associé au clapet d'aspiration, un canal radial 51 qui prolonge un conduit de dérivation 42 de la culasse centrale. L'étanchéité entre les conduits 42 et 51 est assurée par des joints. Ce conduit radial communique à l'aval du clapet 61 avec une capacité de pompage 15 par l'intermédiaire d'un conduit 52 qui est parallèle à l'axe 21. Ce conduit 52 communique avec une chambre 56 comprise entre le clapet d'aspiration 61 et le clapet de refoulement 71. L'écoulement du liquide, en aval de la chambre 56, est contrôlé par le clapet de refoulement 71. En aval de ce clapet 71, le liquide est canalisé dans un conduit de refoulement radial 53.Each lateral cylinder head comprises, upstream of the seat 62 associated with the suction valve, a radial channel 51 which extends a bypass duct 42 of the central cylinder head. The seal between the conduits 42 and 51 is ensured by seals. This radial conduit communicates downstream of the valve 61 with a pumping capacity 15 via a conduit 52 which is parallel to the axis 21. This conduit 52 communicates with a chamber 56 between the suction valve 61 and the discharge valve 71. The flow of the liquid, downstream of the chamber 56, is controlled by the discharge valve 71. Downstream of this valve 71, the liquid is channeled in a radial discharge conduit 53.

La culasse centrale est percée radialement par des conduits collecteurs 45 qui débouchent dans un canal collecteur 44. Ce canal 44 est raccordé coaxialement à la tuyauterie générale de refoulement 82. Chaque conduit collecteur 45 est raccordé à un conduit de refoulement radial 53 d'une culasse latérale. L'étanchéité, au niveau des portées latérales, entre les conduits 45 et 53 est assurée par des joints d'étanchéité.The central cylinder head is pierced radially by manifold conduits 45 which open into a collecting channel 44. This channel 44 is connected coaxially to the general delivery pipe 82. Each collecting pipe 45 is connected to a radial delivery pipe 53 of a cylinder head lateral. The seal, at the lateral surfaces, between the conduits 45 and 53 is ensured by seals.

Sur chaque culasse latérale, l'axe de déplacement du clapet d'aspiration 61 est perpendiculaire à l'axe 21, l'axe de déplacement du clapet de refoulement 71 étant parallèle à cet axe 21. La culasse centrale 4 et les culasses latérales 5 peuvent être obtenues par moulage. La culasse centrale 4 peut éventuellement être réalisée en deux parties.On each lateral cylinder head, the axis of movement of the suction valve 61 is perpendicular to the axis 21, the axis of movement of the discharge valve 71 being parallel to this axis 21. The central cylinder head 4 and the side cylinder heads 5 can be obtained by molding. The central cylinder head 4 can possibly be made in two parts.

Le fonctionnement de la pompe illustrée par les figures 1 et 2 va maintenant être décrit.The operation of the pump illustrated in Figures 1 and 2 will now be described.

Les pistons 12 sont animés d'un mouvement alternatif qui aspire et refoule le liquide amené par la tuyauterie générale d'aspiration 81. Lors de la phase d'aspiration, le clapet d'aspiration 61 d'une culasse latérale 5 se lève sous l'effet de la dépression créée par la course d'aspiration du piston associé à cette culasse. Une quantité de liquide venant des conduits dérivation 42 est alors admise dans la capacité de pompage 15. Lors de la phase de refoulement, le clapet d'aspiration 61 est appliqué contre le siège associé 62. Le clapet de refoulement 71 s'écarte du siège associé de manière à permettre l'écoulement du liquide dans les conduits de refoulement 53 et 45. Du fait que les pistons 12 sont décalés selon l'axe 21 de la pompe, le débit de liquide dans la tuyauterie générale de refoulement 82 est relativement régulier dans le temps.The pistons 12 are driven in an alternating movement which sucks in and discharges the liquid supplied by the general suction pipe 81. During the suction phase, the suction valve 61 of a side cylinder head 5 rises under the effect of the vacuum created by the suction stroke of the piston associated with this cylinder head. A quantity of liquid coming from the bypass conduits 42 is then admitted into the pumping capacity 15. During the delivery phase, the suction valve 61 is applied against the associated seat 62. The delivery valve 71 moves away from the seat associated so as to allow the flow of liquid in the discharge conduits 53 and 45. Because the pistons 12 are offset along the axis 21 of the pump, the flow of liquid in the general discharge piping 82 is relatively regular in time.

Il est bien entendu que l'on peut sans sortir du cadre de l'invention imager des variantes et perfectionnements de détails et de même envisager l'emploi de moyens équivalents.It is understood that it is possible without departing from the scope of the invention to imagine variants and improvements of details and even to envisage the use of equivalent means.

Claims (5)

1. A pump comprising a plurality of pumping chambers (15) which are formed by cylinders (11) which are fixed to a support structure (2) in a barrel type arrangement and pistons (12) which are capable of sliding in said cylinders (11) under the action of a drive mechanism (3), wherein the liquid is carried after the general intake pipe (81) by a central distribution passage (41) and radial conduits (42, 51) which communicate downstream of intake valves (61) which said pumping chambers (15), downstream of which discharge valves (71) control the flow of liquid which is carried by radial collector conduits (53, 45) which open into a collector passage (44) connected to the general . discharge pipe (82), characterised in that it comprises a central cylinder head (4) which is provided on the one hand with said central distribution passage (41) and said radial conduits (42) and on the other hand said radial collector conduits (45) and the discharge collector passage (44) and lateral cylinder heads (5) on which the intake valves (61) and discharge valves (71) are mounted and which are provided with conduits (51, 52, 56, 53) communicating with the radial conduits and with the pumping chambers, each of the lateral cylinder heads (5) being sealingly applied against a surface (43) of the central cylinder head.
2. A pump according to claim 1 characterised in that the central cylinder head (4) is delimited by flat bearing surfaces (43) parallel to the axis of the pump.
3. A pump according to either of the preceding claims characterised in that the lateral cylinder heads (5) are applied against the support structure (2).
4. A pump according to any one of the preceding claims characterised in that the central distribution passage (41) and the discharge collector passage (44) are disposed along the axis (21) of the pump.
5. A pump according to any one of the preceding claims characterised in that the lines of movement of the intake valves (61) are disposed perpendicularly to the axis of the pump and the lines of movement of the discharge valves (71) are disposed parallel to the axis of the pump.
EP80400385A 1979-03-30 1980-03-21 Pump with pistons and cylinders in axial arrangement Expired EP0017552B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400385T ATE363T1 (en) 1979-03-30 1980-03-21 PUMP WITH PISTONS AND CYLINDERS IN AXIAL ARRANGEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7908006A FR2461127A1 (en) 1979-03-30 1979-03-30 ALTERNATIVE PUMP
FR7908006 1979-03-30

Publications (2)

Publication Number Publication Date
EP0017552A1 EP0017552A1 (en) 1980-10-15
EP0017552B1 true EP0017552B1 (en) 1981-11-04

Family

ID=9223747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400385A Expired EP0017552B1 (en) 1979-03-30 1980-03-21 Pump with pistons and cylinders in axial arrangement

Country Status (5)

Country Link
US (1) US4342544A (en)
EP (1) EP0017552B1 (en)
AT (1) ATE363T1 (en)
DE (1) DE3060068D1 (en)
FR (1) FR2461127A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548284B1 (en) * 1983-07-01 1987-10-23 Creusot Loire OBLIQUE PLATE MECHANISM FOR THE CONTROL OF A PUMP
NL8501315A (en) * 1985-05-08 1986-12-01 Multinorm Bv PUMP.
DE8514497U1 (en) * 1985-05-15 1985-07-18 Kränzle, Josef, 7918 Illertissen High pressure piston pump
US4707789A (en) * 1985-11-29 1987-11-17 General Motors Corporation Adaptive direct pressure shift control for a motor vehicle transmission
US4653350A (en) * 1985-11-29 1987-03-31 General Motors Corporation Adaptive direct pressure shift control for a motor vehicle transmission
US4734013A (en) * 1986-02-18 1988-03-29 V-Tech Industries Inc. Rotary pressure intensifier
US7007589B1 (en) * 1997-09-15 2006-03-07 R. Sanderson Management, Inc. Piston assembly
US6446587B1 (en) 1997-09-15 2002-09-10 R. Sanderson Management, Inc. Piston engine assembly
US6460450B1 (en) * 1999-08-05 2002-10-08 R. Sanderson Management, Inc. Piston engine balancing
US7011469B2 (en) * 2001-02-07 2006-03-14 R. Sanderson Management, Inc. Piston joint
US7331271B2 (en) 2001-02-08 2008-02-19 R. Sanderson Management, Inc. Variable stroke/clearance mechanism
US6854377B2 (en) 2001-11-02 2005-02-15 R. Sanderson Management, Inc. Variable stroke balancing
US6913447B2 (en) * 2002-01-22 2005-07-05 R. Sanderson Management, Inc. Metering pump with varying piston cylinders, and with independently adjustable piston strokes
AU2003234656A1 (en) 2002-05-28 2003-12-12 R. Sanderson Management, Inc. Overload protection mecanism
US7325476B2 (en) 2004-05-26 2008-02-05 R. Sanderson Management, Inc. Variable stroke and clearance mechanism
IT201900024283A1 (en) 2019-12-17 2021-06-17 Mixtron S R L INCLINED PLATE AXIAL PISTON PUMP

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR860429A (en) * 1939-06-22 1941-01-14 Olaer Soc New liquid pump
US2400119A (en) * 1942-01-14 1946-05-14 Joseph F Joy Variable displacement pump
FR904061A (en) * 1943-12-13 1945-10-25 Morane Jeune Ets Variable displacement hydraulic compression pump
FR1007900A (en) * 1948-04-13 1952-05-12 Cie Gen Equip Aeronautique Improvement in self-regulating pumps
FR1007901A (en) * 1948-04-13 1952-05-12 Cie Gen Equip Aeronautique Self-regulating pump with progressive adjustment
DE921246C (en) * 1950-12-12 1954-12-13 Teves Kg Alfred High pressure piston pump
GB913980A (en) * 1961-09-04 1962-12-28 Applied Power Ind Inc Slide plate type volume control valve
CH401693A (en) * 1962-06-04 1965-10-31 Bergwerksverband Gmbh Axial piston pump for pumping non-self-lubricating liquid media
GB1067962A (en) * 1964-02-15 1967-05-10 Hydraulik Gmbh Improvements in/or relating to swash plate pumps
FR1453856A (en) * 1965-03-29 1966-09-30 Bennes Marrel Improvements to axial piston hydraulic pumps
US3746476A (en) * 1971-04-01 1973-07-17 Applied Power Ind Inc Hydraulic pump
FR2204230A5 (en) * 1972-10-20 1974-05-17 Dowell Schlumberger
US4105369A (en) * 1977-06-30 1978-08-08 Owatonna Tool Company Two-stage pump

Also Published As

Publication number Publication date
US4342544A (en) 1982-08-03
ATE363T1 (en) 1981-11-15
FR2461127B1 (en) 1982-02-26
DE3060068D1 (en) 1982-01-14
FR2461127A1 (en) 1981-01-30
EP0017552A1 (en) 1980-10-15

Similar Documents

Publication Publication Date Title
EP0017552B1 (en) Pump with pistons and cylinders in axial arrangement
FR2689014A1 (en) Medical liquid infusion pump.
EP0082039B1 (en) Hydrostatic clutch
FR2627238A1 (en) WAVE AIR COMPRESSOR
CA2595360A1 (en) Multi-shaft vacuum pump with circular translation cycle
FR2736688A3 (en) Swashplate pump for water jet cleaning unit
FR2608223A1 (en) AXIAL PISTON PUMP
FR2569779A1 (en) Metering injection device and irrigation installation comprising the application thereof
FR2664661A1 (en) HYDRAULIC ROTATING MACHINE.
FR2711182A1 (en) Air distributor with low friction and anti-icing system.
FR2774313A1 (en) Painting tool for painting large-scale structure
FR2610875A1 (en) HYDRAULIC POWER TRANSMISSION APPARATUS
FR2535371A1 (en) Mixer, transporter and sprayer for dry powder and liq.
FR2981993A1 (en) Gear pump i.e. fuel pump, for turboshaft engine of aircraft, has secondary toothed wheel arranged between and engaged with primary toothed wheels and axially moved with respect to primary toothed wheels to vary displacement of pump
WO2024231636A1 (en) Improved pressure adapter for hydraulic system
FR2585413A1 (en) Manual emergency pump with variable flow rate
FR2711189A1 (en) Hydraulic engine-speed varying assembly for a motor vehicle
FR2637945A1 (en) HYDRAULIC APPARATUS HAVING AN ORIFICE ROTATING PLATE
FR2730006A1 (en) Rigid crankshaft coupling for IC engine, pump or compressor
FR2671833A3 (en) Compressor with liquid ring with long-term feed
FR2751035A1 (en) MAGNETICALLY CONTROLLED DOSING PUMP
WO2024231637A1 (en) Improved pressure adaptor for a hydraulic system
FR2645598A1 (en) Pump intended for pumping thick (viscous) products
WO2024231634A1 (en) Improved pressure adapter for hydraulic system
BE563131A (en)

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

Designated state(s): AT BE CH DE GB IT NL SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT NL SE

REF Corresponds to:

Ref document number: 363

Country of ref document: AT

Date of ref document: 19811115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3060068

Country of ref document: DE

Date of ref document: 19820114

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

Ref country code: CH

Payment date: 19890223

Year of fee payment: 10

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

Ref country code: AT

Payment date: 19890224

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19890309

Year of fee payment: 10

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

Ref country code: SE

Payment date: 19890321

Year of fee payment: 10

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890331

Year of fee payment: 10

Ref country code: GB

Payment date: 19890331

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19890412

Year of fee payment: 10

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

Ref country code: GB

Effective date: 19900321

Ref country code: AT

Effective date: 19900321

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

Ref country code: SE

Effective date: 19900322

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

Ref country code: CH

Effective date: 19900331

Ref country code: BE

Effective date: 19900331

BERE Be: lapsed

Owner name: CREUSOT-LOIRE

Effective date: 19900331

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

Ref country code: NL

Effective date: 19901001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19910201

EUG Se: european patent has lapsed

Ref document number: 80400385.3

Effective date: 19910109

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