EP1971774B1 - Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif - Google Patents
Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif Download PDFInfo
- Publication number
- EP1971774B1 EP1971774B1 EP06841880A EP06841880A EP1971774B1 EP 1971774 B1 EP1971774 B1 EP 1971774B1 EP 06841880 A EP06841880 A EP 06841880A EP 06841880 A EP06841880 A EP 06841880A EP 1971774 B1 EP1971774 B1 EP 1971774B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- connecting rod
- hydraulic machine
- elastic means
- valve
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000002441 reversible effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000007373 indentation Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/26—Reciprocating-piston liquid engines adapted for special use or combined with apparatus driven thereby
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- 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
- F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/107—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
Definitions
- a hydraulic motor of this kind is known, for example according to EP-B-0 255 791 , or after US-A-5505 224 or after EP-B-1 151 196 .
- This hydraulic motor can be used. to drive a device for injecting an additive into a main liquid ensuring the operation of the engine.
- the number of parts of hydraulic motors of this kind is relatively important, especially to achieve the trigger means with elastic means. This results in relatively complicated assembly and disassembly operations, which does not facilitate manufacture or maintenance, for example for the replacement of worn parts. It is further desirable that the trigger means be formed by a simple mechanism.
- the invention therefore aims, above all, to provide a hydraulic machine of the kind defined above, including a hydraulic motor, the assembly and disassembly are made simpler and faster. It is also desirable to make the manufacturing easier with a reduced number of parts.
- the proposed solution should remove any metal parts, including metal springs, to increase the resistance of the machine to chemicals to be dosed. It would be advantageous for the injection of the product to be determined, in particular chemical product, to take place in the only exit chamber of the machine.
- a hydraulic reciprocating machine in particular a hydraulic motor, of the kind defined above is characterized in that the elastic means is integral; at each of its ends, a hinge member received respectively in a housing provided on the link and on another moving part of the machine, each housing being open in a direction substantially opposite to the direction of the force exerted by the elastic means in the housing, so that each hinge member of the resilient means can be extracted from its housing - open against said effort, assembly and disassembly being simplified.
- the hinge member integral with the elastic means at each of its ends is advantageously constituted by a cylindrical pin, transverse to the direction of the force exerted by the resilient means, forming hinge axis.
- the elastic means may be constituted by a curved arc-shaped spring blade, in particular substantially in the form of a semicircle.
- This spring blade is advantageously made of plastic material and the hinge pins provided at each end are molded in one piece with this leaf spring.
- the switching means may comprise a valve holder with at least a first valve whose seat is provided on the small section of the piston, and at least one second valve whose seat is provided on the large section of the piston, each valve having a rod coupled to the valve holder, one of the valves being located on the same side as the link, even compared to the piston; and the other valve being located on the opposite side with a rod which passes through the seat for coupling to the valve holder; the coupling of the valve stem located on the opposite side to the rod is preferably performed by a snap on the valve holder, this snap being accessible from the piston side where the link is located so that the disassembly of the valve and the Extraction of the valve holder is facilitated.
- the link is articulated at its end remote from the elastic means at a fixed point relative to the piston.
- the connecting rod is integral, at its end remote from the elastic means, a hinge pin oriented transversely to the link, received in a notch provided in a wall integral with the piston and parallel to the axis of the piston, this notch being open in the direction opposite to that of the force exerted by the elastic means on the rod.
- the axis of the rod is simply engaged in this notch, which allows disassembly particularly simple and fast.
- each elementary connecting rod having at its proximal end of the elastic means an open housing facing the other link for receiving an end of the hinge axis integral with the elastic medium.
- Each link may comprise two parallel branches between which is provided the axis of articulation on the piston, this axis being molded in one piece with the two branches of the link.
- the pusher is integral at the top of a gantry with two walls surrounding the elastic means, and at least one notch opening on the opposite side to the rod, each notch receiving one end of the axis of articulation of the elastic means.
- the two walls flanking the elastic means extend on the opposite side to the rod and are joined by a cross member at the top, this cross member constituting the upper abutment of the pusher.
- the two walls of the gantry may comprise, on either side of the zones provided with notches receiving the axis of articulation of the elastic means, external projections capable of cooperating with integral walls of the piston for guiding the pusher relative to the piston. .
- the valve holder may have the form of a frame, vertical in the operating position, having on its two vertical sides ribs projecting outwards adapted to cooperate with corresponding guide grooves provided in the piston.
- the lower horizontal side of the frame has open housings allowing an easily removable hitch of at least one and preferably two valves having their seat on the small section of the piston and located on the same side as the rod.
- the upper horizontal side of the frame is extended at each end beyond the vertical uprights and has open housing for receiving by simply snapping the stem of a valve, having its seat on the large section of the piston, the opposite side at the link.
- the valve holder may comprise, on its upper horizontal side, a stirrup projecting upwards, flanking by its lateral wings the elastic means formed by a curved arcuate blade. This stirrup is intended for ensure a bypass operation of the machine when it bears against the cover of the envelope.
- the piston is provided at its large section and small section of sealing lips oriented in opposite directions and facing one another.
- these sealing lips are provided on removable circular rings, and the piston is molded in one piece.
- Each sealing ring is advantageously fixed to the piston by a bayonet type assembly having radial projections on the inner surface of the seal and corresponding peripheral grooves on the outer surface of the piston, with grooves parallel to the geometric axis of the piston for allow each projection of the seal to come into contact with a corresponding peripheral groove of the piston.
- the ring provided at the level of the large section of the piston advantageously has a V profile whose concavity is turned towards the small section, and has on the opposite side a frustoconical sealing lip whose diameter increases towards the cover of the 'envelope.
- the circular ring of the small section of the piston has a V-shaped cross section whose concavity is turned towards the large section.
- a hydraulic machine constituted by a reciprocating differential hydraulic motor.
- the following description essentially relates to a differential motor, that is to say a motor whose piston has two zones of different sections, but the invention can also be applied to single-piston engines, or membrane-type engines. place of the piston.
- the motor M comprises a casing 1 consisting of a cylindrical body 2 surmounted by a cover 3 assembled to the body 2 in a removable manner, in particular by screwing.
- a differential piston 4 is disposed in the casing 1 to slide in reciprocating motion.
- the piston 4 comprises, in the upper part, a zone 5 of large section, in the form of a ring, the periphery of which bears tightly against the inner wall of the casing 1.
- the lower part of the barrel 6 slides in sealed manner in a cylindrical housing 7 coaxial with the casing 1.
- the barrel 6 is closed at the bottom by a bottom 6a, constituting the zone of small section of the piston.
- the piston 4 separates the interior volume of the envelope 1 into two chambers, respectively 8 located below the crown 5, and 9 located above the crown 5.
- the chamber 8 is an annular chamber between the envelope 1, the outer surface of the housing 7 and the outer surface of the barrel 6.
- An inlet manifold 10 opens at the bottom of the chamber 8.
- the interior volume of the housing 7 located below the bottom 6a of the piston constitutes a third chamber 11, or outlet chamber, to which is connected an outlet pipe 12 axis orthogonal to that of the casing.
- a cylindrical sleeve 13 coaxial with the casing 1 extends downwards to allow connection to an injection device J of a liquid additive in the outlet chamber 11.
- This injection device is actuated by the motor whose piston 4 is connected by a rod 4r to a pumping means of the additive.
- Hydraulic switching means C are provided for the supply of liquid and the evacuation of the chambers 8, 9 separated by the piston. These switching means C are controlled by the displacements of the piston 4 and comprise a rod 14 acting on a dispensing member 15 which can assume two stable positions. In one of the stable positions, the chamber 8 receives the liquid under pressure while the chamber 9 is connected to the outlet 12. In the other dispensing organ position 15, the chamber 9 receives the liquid under pressure and is isolated from the chamber 11.
- the dispensing member 15 is constituted by a valve holder comprising at least a first valve 16 whose seat is located under the crown 5, the valve 16 having a head located in the chamber 8
- the valve 16 closes moving from bottom to top according to the drawings.
- the dispensing member 15 is provided with at least one other valve 17 whose head is located in the chamber 9.
- the seat of each valve 17 is located on the bottom 6a. The valve 17 closes by a downward movement against its seat.
- the motor further comprises triggering means comprising a pusher 18 capable of causing, at the end of the stroke of the piston, by bearing against a stop, a sudden change in the position of the switching means C under the action of a elastic means E, for reversing the piston stroke.
- triggering means comprising a pusher 18 capable of causing, at the end of the stroke of the piston, by bearing against a stop, a sudden change in the position of the switching means C under the action of a elastic means E, for reversing the piston stroke.
- the rod 14 is articulated at one end 14a at a fixed point relative to the piston 4.
- the other end 14b of the rods can move in a vertical window 19 of the valve holder and abut against one of the two ends of this window, in one of the two stable positions of the dispensing member 15.
- the resilient means E is integral at each of its ends with a hinge member 20a, 20b respectively received in a housing 21 provided on the link and 22 on another moving part of the machine, namely the pusher 18 in the example shown.
- Each housing 21, 22 is open in a direction substantially opposite to the direction of the force exerted by the resilient means E in the wall of the housing considered.
- Disassembly of the articulation member 20a, 20b of its housing is effected by a simple translational movement exerting a force contrary to that of the elastic means E.
- the maintenance of articulation members 20a, 20b, in their housing is provided by the force developed by the elastic means E.
- This elastic means E is advantageously constituted by a leaf spring 23 substantially arc-shaped convex curve, in particular substantially in a semicircle.
- the blade 23 is integral at each end of a cylindrical pin orthogonal to the plane of the curve arc, this pin constituting the articulation member 20a, 20b.
- the leaf spring 23 is made of plastic material, and is molded in one piece with the cylindrical pins 20a, 20b The leaf spring 23 turns its convexity on the opposite side to the bottom 6a of the piston.
- the billet 14 is articulated, at its end 14a remote from the housing 21 receiving the pin 20a, in a notch 24 ( Fig.6 ), fixed with respect to the piston 4.
- the rod 14 ( fig2 and 6 ) is advantageously formed by two parallel elementary links 25, 26 interconnected by a cross member 27 closer to the end 14b than the other end 14a.
- the ends of the rods 25 and 26 forming the end 14b have a cylindrical shape of axis-geometric orthogonal to the longitudinal direction of the rods.
- Each of these cylindrical ends has a housing 21 facing the other elementary rod, and open on the opposite side to the end 14a.
- Each housing 21 receives an end of the pin 20a which protrudes transversely on either side of the blade 23.
- a snap of the pin 20a in the housing 21 is provided.
- Each elementary rod 25, 26 has two parallel branches between which is provided at the end 14a, a hinge pin 28 received in the notch 24 of the piston.
- An axle 28 is provided for each elementary link 25, 26.
- Each axis 28 is molded in one piece with the two branches of the elementary link.
- the two elementary links 25, 26 are molded in one piece with the cross member 27 so that the rod 14 is constituted by a single piece of plastic material.
- the indentations 24 of articulation on the piston form a housing substantially in a semicircle for free engagement of an axis 28.
- the notches 24 are provided in walls 29,30 parallel to each other and to the geometric axis of the piston, equidistant from these walls.
- the spacing between the walls 29, 30 is equal to the spacing between the hinge pins 28 of the two elementary links, while the thickness of the walls 29; 30 is less than the distance between the inner faces of the two parallel branches of the same elementary link.
- Each wall 29, 30 is framed by two parallel branches of a single elementary rod.
- Each notch 24 is open in the opposite direction to the force exerted by the resilient blade 23 on the rod 14, which force pushes and maintains each axis 28 bearing against the bottom of the notch 24.
- the axle 28 is simply engaged in the notch 24, preferably without snapping.
- the assembly and disassembly of the link 14, with its two axes 28 respectively in the indentations 24, are particularly simple and fast.
- the pusher 18, as visible on Fig.6 comprises a rod 31, for example of cruciform section, guided in sliding in a well 32 ( Fig.2 ) of the piston.
- the rod 31 comprises, substantially mid-length, a groove 33 for receiving an O-ring 34 providing a tight sliding in the well 32.
- the upper end of the rod 18 is integral with a frame 35 having a transverse base integral with the upper end of the rod 18.
- the frame 35 also comprises two longitudinal walls 35a, 35b, parallel to the geometric axis of the rod 18, flanking the resilient blade 23 and connected at the top by a crossmember 36.
- Each wall 35a, 35b has at its base integral with the rod 18 a notch 22 substantially in a semicircle, opening on the opposite side to the rod 14.
- Each notch 22 receives one end of the hinge pin 20b, preferably with latching .
- the frame 35 forms a kind of gantry and the cross member 36 at the top is the high abutment of the pusher.
- the ends of the blade 23 preferably have a reduced width which determines the minimum spacing between the facing faces of the inner end walls of the housing 21 or 22.
- the pusher 18 with its frame 35 is also made of a single piece of plastic material.
- the mounting or dismounting of the pin 20b in the housings 22 is particularly simple and fast, by elastic deformation of the blade 23.
- the two longitudinal walls 35a, 35b of the gantry 35 comprise outwards, on either side of the zones provided with the indentations 22, protrusions 37, for example in the form of truncated pyramids, bounded by a planar top face parallel to the geometric axis of the rod 31 and orthogonal to the pin 20b.
- the projections 37 are adapted to cooperate with walls 38 ( Fig.5 and 6 ) in the form of a straight dihedral, integral with the piston, guiding the gantry 35.
- the walls 38 are connected to the walls 30 along an edge parallel to the axis of the piston, on the opposite side to the indentations 24.
- the valves 16, 17 are mounted on the valve holder 15 ( Fig.6 ) having substantially the shape of a frame 39, vertical in the engine operating position, having on its two vertical sides ribs 40 projecting outwards, clean. to cooperate with guide grooves (not visible) provided in the piston 4.
- the lower horizontal side of the frame 39 has two open housings 41 allowing a coupling, snap-fastening of the cylindrical rod of a valve 17, by a translation perpendicular to the plan of the frame 39.
- the lower edges of each housing 41 are housed, with a certain clearance in a direction parallel to the axis of the piston, between two flanges or disks 42a, 42b ( Fig.4 ) integral with the valve stem.
- the valve itself is constituted by a disk having at its periphery a groove 43 ( Fig.4 ) to receive a seal.
- valves 17 are provided on the bottom 6a of small section of the piston 4.
- the valves 17 are located on the side of the rod 14 relative to the piston 4.
- the upper horizontal side of frame 39 extends beyond the vertical uprights of the frame and comprises, at each end, a laterally open housing 44 with a cross-section greater than a semicircle for receiving a cylindrical rod 45 ( Fig.4 )
- the rod 45 comprises two flanges projecting radially between which is housed the housing wall 44.
- Two valves 16 are provided which correspond to two seats 45 on the large section 5 of the piston, symmetrically with respect to a plane passing through the axis of the piston and orthogonal to the pivot axis of the rod 14.
- valves 16 are oriented with their rod 45 directed upwards which is engaged through the opening of the seat to be hooked to the housing 44, on the same side of the large section 5 as the rod 14.
- the valve holder 15, 39 advantageously comprises, on its upper horizontal side, a stirrup 46 projecting upwardly flanking, by its lateral wings, the elastic blade 23 ( Fig.5 ).
- This stirrup 46 is designed to ensure, when it comes into abutment against the lid 3 of the envelope, for example as a result of a failure of a part of the engine, a machine operation in bypass (bypass) , the valves being kept open.
- valve holder. 15, 39 forms a single piece which can be made of molded plastic:
- Columns 47 three for example, having a cross-section with three branches, integral with the large section 5 of the piston, project upwards parallel to the axis of the piston and are distributed at 120 ° to one of the other in the vicinity of the periphery of the piston.
- the posts 47 constitute mechanical safety stops against the cover 3 of the envelope in the event of breakage of a part or overhead, the height of these posts 47 being provided accordingly.
- the piston 4 is provided, at its large section and small section, with sealing lips 48, 49 ( Fig.6 . and 7 ) turned towards each other.
- the sealing lips 48, 49 are provided on removable circular sealing rings 50, -51, clearly visible on Fig.7 .
- the piston 4 can thus be molded in one piece, advantageously made of plastic.
- Each sealing ring 50, 51 is advantageously fixed to the piston 4 by a bayonet type assembly having radial projections 52, 53 on the inner surface of the respective rings 50, 51.
- the projections 52, 53 are adapted to cooperate with corresponding peripheral grooves 54, 55 provided on the outer surface of the large section and the small section of the piston.
- Disengagements 56, 57 with generatrices parallel to the axis of the piston are provided on the outer periphery of the large and small sections to allow to bring the radial projections 52, 53 opposite the inlet of the peripheral grooves 54, 55 by a translation movement parallel to the axis of the piston.
- the sealing ring 50 provided at the large section of the piston has a V profile whose concavity is turned towards the small section, that is to say downwardly according to the representation of the drawings.
- This V-shaped profile is limited on the outside by the lip 48 which seals against the wall of the casing and, on the inside, by a slightly frustoconical lip 58 which seals against the piston.
- the ring 50 comprises, on the opposite side to the lips 48, 58, another frustoconical sealing lip 59 turned in the opposite direction, the diameter of which increases towards the cover of the casing.
- This lip 59 provides protection of the sealing zone between the piston and the envelope, at the level of the lip 48, against a fallout of abrasive particles.
- the circular ring 51 of the small section of the piston has a V-shaped cross section whose concavity is turned towards the large section, that is, upwards according to Fig.7 .
- the outer arm of the V forms the sealing lip 49 between piston and casing.
- the outer wall of the piston .4, as visible on Fig.6 , has two recessed areas such as 4a, extending under the seats of the valves 16 and allowing their vertical reciprocating movements.
- the motor M can be mounted in the following manner.
- Sealing rings 50,51 shown on Fig.7 , can be assembled to the piston 4, by the bayonet attachment, before placing the valves.
- a subset ( Fig. 6 ) can be constituted by engaging the pin 20b of the resilient blade 23 in the notches 22 of the pusher 18, while the pin 20a is engaged in the housing 21 of the rod 14.
- This subassembly can then be put in place in the piston 4 by engaging the rod 31 of the pusher 18 in the guide well 32 and engaging the pins 28 of the rod 14 in the notches 24.
- Another subassembly is prepared from the valve holder 15, 39 in the lower part of which are snapped the valves 17, the valve holder 15,39. is then engaged in the piston 4 in a vertical downward movement by introducing the ribs 40 in the corresponding guide grooves of the piston.
- valves 16 with their upwardly directed rods are then presented below the crown 5.
- the stem 45 of each valve 16 is then passed through the opening of the corresponding seat in order to snap the upper end of this rod. in the housing 44 of the valve holder 15,39.
- the operation of the motor is similar to that described in EP 151,196 and will only be briefly recalled with reference to Fig. 1 where the piston 4 is in ascending stroke.
- the pressurized liquid usually water, arrives through the inlet 10 .
- the valves 16 are closed while the valves 17 are open, allowing the delivery of the liquid from the chamber 9 to the chamber 11 and the outlet 12.
- the pusher 18 comes to bear against an abutment linked to the cover 13, which causes under the effect of the leaf spring 23 the tilting of the link 14 towards the other low stable position, with movement of the door valves 15 to the bottom 6a of the piston.
- the valves 17 close while the valves 16 open.
- the pressurized liquid passes into the closed chamber 9 and the movement of the piston is reversed.
- the pusher 18 At the end of the downward stroke, the pusher 18 by its lower end meets a stop G integral with the casing, which causes a new tilting of the rod 14 to the raised position and a displacement of the valve holder 15 causing the closing of valves 16 and the opening of the valves 17.
- the movement of the piston 5 is reversed again and the piston starts up again.
- Fig. 11 illustrates an alternative embodiment of the pusher 18, the rod 31a is made in two parts 31b, 31c assembled removably.
- the upper part 31b extends downwards by a cylindrical shaft 31d of outside diameter smaller than that of the upper part of 31b.
- the lower part 31c is cylindrical tubular to receive the shaft 31d.
- a lock is provided between the two parts, in particular by a bayonet system 31e, 31f provided at the lower end of the parts.
- the pusher seal is advantageously constituted by a plastic ring 34a with a V-shaped section, with a double lip similar to the ring 51, but of smaller diameter.
- the concavity of the V is preferably turned upwards.
- the ring 34a is mounted on the lower part 31c with a quarter-turn bayonet fastening system, similar to that described with respect to the Fig.7 to 9 .
- This arrangement allows an easy change of the ring 34c in case of wear and a choice of plastic for the ring 34a, having a good chemical inertia with respect to the liquids passing through the motor and the metering device.
- Fig.12 illustrates an alternative embodiment of the removable sealing rings 50, 51.
- a snap rings 50,51 on the piston 4 is provided at the end of rotation of the bayonet assembly.
- the ring 50 has a radially inward projection 52a provided at one end of a rib 52.
- a corresponding window 52b is provided in the side wall of the piston so that at the end of rotation of the assembly, the projection 52a enters the window 52b.
- a locking rotation of the ring 50 is thus achieved and prevents undesirable disassembly of the ring 50 in operation.
- To disassemble the ring 50 using a tool we push from the inside, through the window 52b, the projection 52a outwardly to disengage it from the window.
- the hydraulic motor more generally the hydraulic machine, according to the invention can be made entirely of plastic, including the elastic means E formed by the blade 23, and has a high resistance to chemicals without any metal parts.
- the sealing ring 50 of the large section of the piston incorporates a protective lip 59.
- the removable sealing rings 50, 51 make it possible to maintain the opposite sealing directions in order to obtain the injection of the additive product entering through the sleeve. 13 in the exit chamber 11.
- the mechanism for controlling the tilting of the link 14 and the positional loading of the valve gate 15, 39 is particularly simple of the three-point type.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Reciprocating Pumps (AREA)
- Actuator (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
- Adornments (AREA)
- Fluid-Pressure Circuits (AREA)
- Shovels (AREA)
- Lubricants (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0600315A FR2896281B1 (fr) | 2006-01-13 | 2006-01-13 | Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif. |
PCT/FR2006/002673 WO2007080249A1 (fr) | 2006-01-13 | 2006-12-07 | Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1971774A1 EP1971774A1 (fr) | 2008-09-24 |
EP1971774B1 true EP1971774B1 (fr) | 2009-05-06 |
Family
ID=36353903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06841880A Active EP1971774B1 (fr) | 2006-01-13 | 2006-12-07 | Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif |
Country Status (16)
Country | Link |
---|---|
US (1) | US7975597B2 (ja) |
EP (1) | EP1971774B1 (ja) |
JP (1) | JP5465434B2 (ja) |
CN (1) | CN101371040B (ja) |
AT (1) | ATE430878T1 (ja) |
AU (1) | AU2006334587B2 (ja) |
BR (1) | BRPI0620997B1 (ja) |
CA (1) | CA2636627C (ja) |
DE (1) | DE602006006724D1 (ja) |
EA (1) | EA013712B1 (ja) |
ES (1) | ES2326924T3 (ja) |
FR (1) | FR2896281B1 (ja) |
MX (1) | MX2008009067A (ja) |
NZ (1) | NZ569650A (ja) |
UA (1) | UA90205C2 (ja) |
WO (1) | WO2007080249A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015063668A1 (fr) | 2013-10-30 | 2015-05-07 | Dosatron International | Pompe a membrane et dispositif a clapets pour une telle pompe |
US11644020B2 (en) | 2019-07-29 | 2023-05-09 | Diversey, Inc. | Fluid dosing system |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2896279B1 (fr) * | 2006-01-13 | 2008-02-29 | Dosatron International | Machine hydraulique, en particulier moteur hydraulique, et doseur comportant un tel moteur. |
IL196598A0 (en) * | 2009-01-19 | 2009-09-22 | Anton Babushkin | Dosing pump |
FR2967218B1 (fr) * | 2010-11-08 | 2016-09-02 | Dosatron International | Doseur proportionnel d'un liquide auxiliaire dans un liquide principal. |
FR3001003B1 (fr) * | 2013-01-17 | 2015-03-20 | Dosatron International | Dispositif de dosage pour introduire un additif liquide dans un courant de liquide principal. |
ES2879965T3 (es) * | 2014-12-19 | 2021-11-23 | Zhengzhou Sanhua Tech & Industry Co Ltd | Bomba de pasta de color capaz tanto de inyección masiva como de microinyección |
AU366231S (en) * | 2015-06-18 | 2015-12-23 | Dosatron International | Metering pump |
FR3039862B1 (fr) | 2015-08-06 | 2017-08-11 | Dosatron International | Dispositif de dosage proportionnel supervise et procedes de supervision d'une pompe doseuse |
FR3042235B1 (fr) * | 2015-10-13 | 2020-03-27 | Dosatron International | Machine hydraulique et pompe doseuse reversible equipee d'une telle machine |
FR3049993B1 (fr) | 2016-04-07 | 2018-04-20 | Dosatron International | Mecanisme de dosage d'une pompe, procedes de verrouillage et de deverrouillage d'un tel mecanisme |
FR3049992B1 (fr) * | 2016-04-07 | 2018-04-20 | Dosatron International | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
FR3054004B1 (fr) | 2016-07-13 | 2018-08-24 | Dosatron International | Mecanisme de dosage d'une pompe a dosage proportionnel, pompe et procede de mise en œuvre associes |
GB2593774A (en) | 2020-04-03 | 2021-10-06 | Hydro Systems Europe Ltd | Liquid dispenser comprising piezoelectric detector |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558715A (en) * | 1984-05-16 | 1985-12-17 | Kowatachi International, Ltd. | Apparatus for injecting measured quantities of liquid into a fluid stream |
FR2586761B1 (fr) | 1985-09-05 | 1989-06-30 | Cloup Jean | Compteur de liquide utilisable comme moteur notamment pour pompe doseuse |
FR2602282B1 (fr) * | 1986-07-31 | 1988-09-23 | Cloup Jean | Perfectionnement aux dispositifs d'injection d'un produit additif dose dans un fluide principal |
FR2619165B1 (fr) * | 1987-08-04 | 1989-12-01 | Cloup Jean | Dispositif d'actionnement d'un distributeur a clapets pour machine volumetrique motrice ou receptrice |
FR2629171B1 (fr) * | 1988-03-25 | 1993-04-09 | Moiroux Auguste | Dispositif de transmission hydrostatique et application a un groupe motopropulseur ou un vehicule automobile |
US5058768A (en) * | 1989-03-31 | 1991-10-22 | Fountain Technologies, Inc. | Methods and apparatus for dispensing plural fluids in a precise proportion |
US5137435A (en) * | 1991-03-25 | 1992-08-11 | Frank And Robyn Walton 1990 Family Trust | Compression spring fluid motor |
JPH0712161A (ja) * | 1993-06-29 | 1995-01-17 | Fuji Photo Film Co Ltd | 引張りバネ |
FR2707350B1 (fr) * | 1993-07-05 | 1995-09-01 | Ody Civile Ste Rech | Dispositif de commande des déplacements alternatifs d'un piston différentiel, et pompe doseuse comportant un tel dispositif. |
FR2789457B1 (fr) * | 1999-02-09 | 2001-03-30 | Dosatron Internat Sa | Biellette pour dispositif a genouillere , et dispositif a genouillere comportant une telle biellette |
FR2789445B1 (fr) * | 1999-02-09 | 2001-03-23 | Dosatron Internat Sa | Machine hydraulique differentielle a mouvement alternatif, en particulier moteur hydraulique differentiel |
US6910405B2 (en) * | 2003-07-08 | 2005-06-28 | Dosmatic Usa, Inc. | On/off switch for liquid additive injection pump |
-
2006
- 2006-01-13 FR FR0600315A patent/FR2896281B1/fr not_active Expired - Fee Related
- 2006-12-07 US US12/160,311 patent/US7975597B2/en active Active
- 2006-12-07 CA CA2636627A patent/CA2636627C/fr active Active
- 2006-12-07 EP EP06841880A patent/EP1971774B1/fr active Active
- 2006-12-07 ES ES06841880T patent/ES2326924T3/es active Active
- 2006-12-07 CN CN2006800526839A patent/CN101371040B/zh active Active
- 2006-12-07 DE DE602006006724T patent/DE602006006724D1/de active Active
- 2006-12-07 WO PCT/FR2006/002673 patent/WO2007080249A1/fr active Application Filing
- 2006-12-07 BR BRPI0620997A patent/BRPI0620997B1/pt not_active IP Right Cessation
- 2006-12-07 NZ NZ569650A patent/NZ569650A/en unknown
- 2006-12-07 MX MX2008009067A patent/MX2008009067A/es active IP Right Grant
- 2006-12-07 AU AU2006334587A patent/AU2006334587B2/en active Active
- 2006-12-07 EA EA200870165A patent/EA013712B1/ru not_active IP Right Cessation
- 2006-12-07 UA UAA200810358A patent/UA90205C2/ru unknown
- 2006-12-07 AT AT06841880T patent/ATE430878T1/de not_active IP Right Cessation
- 2006-12-07 JP JP2008549896A patent/JP5465434B2/ja active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015063668A1 (fr) | 2013-10-30 | 2015-05-07 | Dosatron International | Pompe a membrane et dispositif a clapets pour une telle pompe |
US11644020B2 (en) | 2019-07-29 | 2023-05-09 | Diversey, Inc. | Fluid dosing system |
Also Published As
Publication number | Publication date |
---|---|
ATE430878T1 (de) | 2009-05-15 |
US20100282072A1 (en) | 2010-11-11 |
NZ569650A (en) | 2010-04-30 |
CA2636627A1 (fr) | 2007-07-19 |
AU2006334587A1 (en) | 2007-07-19 |
EP1971774A1 (fr) | 2008-09-24 |
EA013712B1 (ru) | 2010-06-30 |
UA90205C2 (ru) | 2010-04-12 |
CN101371040B (zh) | 2012-11-28 |
MX2008009067A (es) | 2008-11-14 |
JP5465434B2 (ja) | 2014-04-09 |
FR2896281A1 (fr) | 2007-07-20 |
JP2009523212A (ja) | 2009-06-18 |
US7975597B2 (en) | 2011-07-12 |
EA200870165A1 (ru) | 2008-12-30 |
BRPI0620997A2 (pt) | 2011-11-29 |
ES2326924T3 (es) | 2009-10-21 |
DE602006006724D1 (de) | 2009-06-18 |
CN101371040A (zh) | 2009-02-18 |
BRPI0620997B1 (pt) | 2020-05-19 |
CA2636627C (fr) | 2013-02-26 |
FR2896281B1 (fr) | 2008-02-29 |
AU2006334587B2 (en) | 2011-09-29 |
WO2007080249A1 (fr) | 2007-07-19 |
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