EP2519744A2 - Pompe ayant une valve avec un dispositif d'amortissement - Google Patents

Pompe ayant une valve avec un dispositif d'amortissement

Info

Publication number
EP2519744A2
EP2519744A2 EP11719157A EP11719157A EP2519744A2 EP 2519744 A2 EP2519744 A2 EP 2519744A2 EP 11719157 A EP11719157 A EP 11719157A EP 11719157 A EP11719157 A EP 11719157A EP 2519744 A2 EP2519744 A2 EP 2519744A2
Authority
EP
European Patent Office
Prior art keywords
valve
valve body
pump
outlet
pump according
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
EP11719157A
Other languages
German (de)
English (en)
Other versions
EP2519744B1 (fr
Inventor
Axel MÜLLER
Olaf OHLIGSCHLÄGER
Stefan Quast
Michael Feckler
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.)
Thomas Magnete GmbH
Original Assignee
Thomas Magnete GmbH
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 Thomas Magnete GmbH filed Critical Thomas Magnete GmbH
Publication of EP2519744A2 publication Critical patent/EP2519744A2/fr
Application granted granted Critical
Publication of EP2519744B1 publication Critical patent/EP2519744B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/048—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing around the moving part of the motor
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • 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
    • F04B53/001—Noise damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/06—Valve parameters
    • F04B2201/0604—Valve noise
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0406—Vibration
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids

Definitions

  • the invention relates to a pump according to the preamble of claim 1.
  • DE 10 2006 019 584 A1 shows a designed as a reciprocating pump electromagnetic pump.
  • a check valve with a valve body is provided, which is firmly inserted between an outlet nozzle and a piston rod leading dosing and an outlet flange.
  • the disadvantage here is that impacts of the piston rod on the valve body cause noise and initiate vibrations in the entire pump.
  • EP 1 748 88 A1 shows a designed as a reciprocating pump electromagnetic pump in which the outlet side, a check valve is provided. A valve body of the check valve is firmly inserted in a cooperating with a piston rod dosing. In the event of contact of piston rod and valve body arise unwanted vibrations and noise that are mitigated by an intended Anzzidämpf description only inadequate.
  • the magnetic pump comprises a magnetically displaceable armature piston with a piston rod, which together at
  • the suction valve comprises a valve body which fits into a receptacle of a
  • Kernflansches is received axially immovable, and having a central bore, can pass through the liquid from an antechamber into a guide sleeve leading the piston rod.
  • the disadvantage is that upon energization of the coil, the end face of the piston rod abuts against the valve body and thus noise and vibration in the pump
  • CONFIRMATION COPY be initiated. Furthermore, it is disadvantageous that when the coil is de-energized, the liquid is tracked exclusively via the central bore, so that a comparatively high negative pressure is established in the guide sleeve, which can form a counterforce to the return movement of the armature piston.
  • the pump according to the invention which is preferably an electromagnetic pump, arranges a delivery space between an inlet and an outlet, wherein to achieve a required
  • valve Pumping power between the inlet and the delivery chamber and / or between the delivery chamber and the outlet is arranged a valve.
  • the valve has a valve body whose valve seat in the outlet direction, ie in
  • valve member substantially prevents a return of funded fluid against the conveying direction.
  • the valve member is in this case biased against the valve seat to achieve a closed position, and are in the conveying direction by lifting against the bias of a spring, for example, the passage of fluid free.
  • the valve body is accommodated in a receptacle of a pump part, for example in a receptacle of a core flange, a connecting piece, or a part accommodated in one of said parts, such as a bushing or a guide sleeve.
  • valve body with respect to the receiving it receiving axially displaceable during operation of the pump, so that the valve body can recede upon contact with a different from the valve movable part of the pump, in particular a piston rod or an armature piston of the drive.
  • the force or energy otherwise introduced into the valve body upon impact of the movable part does not become noises, vibrations, vibrations and / or heat but converted into an axial movement of the valve body.
  • the pump runs low-vibration and quiet and thus increases the life of the pump as a whole.
  • the valve body is assigned a resilient damping arrangement which loads the valve body into a starting position.
  • the initial position of the valve body in this case corresponds to that, expediently by a stop in the receptacle of the pump part limited end position, which occupies the valve body with de-energized drive. If a piston rod is displaced in the direction of the valve body when the drive is energized, the valve body is able to follow the last part of the axial displacement of the piston rod under its load, wherein the resilient damping arrangement is elastically reversibly compressed, deformed or tensioned. After de-energizing the drive causes the damper assembly in the manner of a spring the
  • Displacement path of the valve body expediently makes less than half of the axial thickness of the damping arrangement, so that it can be configured with a rigidity that reliably resets the valve body.
  • the axial displacement path of the valve body and thus the amount of axial displaceability does not make up more than a quarter of the axial thickness of the damping arrangement, in particular not more than one-eighth.
  • the damping arrangement expediently has the same axial strength as the peripheral portion of the valve body, which is guided in the receptacle. The damping arrangement thus stores displacement energy of the piston rod and thus dampens noise and vibration.
  • the return stroke of the piston rod already causes a negative pressure at the outlet-side end side of the valve body, depending on the arrangement of the valve in the case of a suction valve, the valve member lifts off from the valve seat, or, in the case of a check valve arranged on the outlet side, additionally sucks the valve member in the direction of the valve seat.
  • This vacuum can also - in addition to the damping arrangement or alone - as a restoring force for the axial
  • displaceable valve body can be used in total, since the negative pressure arises during the return stroke of the piston rod, so that the negative pressure can reset the valve body in total.
  • displaceable valve body can be advantageously formed in the piston rod end face facing the diameter of the piston rod adapted cylindrical recess which favors without affecting the valve function, a suction of the entire valve body favors.
  • Damper assembly comprises an elastomeric ring, which may be formed in the manner of an O-ring or the like.
  • the elastomer ring is expediently supported at one end on a corresponding contact surface of the valve body, and at the other end is supported on an abutment which is axially immovable with respect to the receptacle receiving the valve body.
  • the damping arrangement comprises in addition to the elastomer ring even more parts, such as a damping plate, which may be formed of plastic or metal and expediently on the
  • the damping arrangement comprises a spring, such as a plate spring, which biases the valve body back into its initial position.
  • damping arrangement on the valve body, for example by fixing the damping arrangement to a section of the valve body in a positive-locking or force-locking manner.
  • vulcanize or shrink the elastomeric ring onto the valve body which can be made in one piece or from the same material as other elastomer surfaces attached to the valve body, for example a lining for the valve seat or a valve seat
  • valve body on the Radial circumference, where it is guided in the recording, with a
  • Slip coating or the like equipped, such as Teflon, to avoid sticking or tilting It is alternatively possible to provide an arrangement in the manner of a liner or a bearing for this purpose.
  • Verstemmring having a central hole through which one end of the valve body axially project into an antechamber in the core flange upstream portion of the pump.
  • an eccentric perforation may be provided in the Verstemmring next to the central hole, which allows a fluid connection between the antechamber and an inner region of the pump or the core flange, so that two ways for tracking are given by fluid in the interior of the pump. As a result, excessively high negative pressures are advantageously avoided.
  • valve body is encased in its radial receptacle with an elastomer material which allows axial mobility, but at the same time ensures an at least liquid-tight, preferably also gas-tight seal for receiving.
  • valve body The axial mobility of the valve body thus allows the formation of the pump such that the piston rod comes into contact with the valve body and thus is particularly small-sized. Further, the axial distance between the valve body and piston rod is achieved in the range of zero, so that the negative pressure is reached early and reliably in the return of the piston.
  • Fig. 1 shows a longitudinal section through a preferred
  • Fig. 2 shows an enlarged section of the longitudinal section through the
  • FIG. 3 shows an alternative embodiment of the pump according to FIG. 1.
  • the designated in Fig.1 total of 1 pump is designed as a magnetic pump, which is a through-flow type.
  • the pump has a modular design in a simple way and can be easily mounted thereby.
  • the pump comprises a magnetic drive which is accommodated in a housing 2, wherein the housing 2 surrounds a coil carrier 3, on which a coil 4 is wound. About a led out of the housing 2 connection area 5, the coil to a power supply
  • an output flange 6 is on the output side clamped, which limits the output side of the housing 2 on the output side substantially and an outlet channel 7, through which the liquid to be conveyed is ejected. Dash-dotted with 8 a cap for the outlet channel 7 is shown.
  • the output flange 6 forms an outlet of the pump 1.
  • a magnet-carrying core flange 9 is pressed into the housing, which has an inner portion with a smaller diameter, which is insertable into the inner region of the bobbin 3, and which has an outer portion with a larger diameter which protrudes from the housing 2.
  • an inlet nozzle 10 is used on its side facing away from the housing 2, which has an inlet channel 11, can pass through the liquid to be supplied.
  • an external thread is provided on the outer circumference of the inlet nozzle 10, which with an internal thread in a projecting annular region of the
  • Kernflansches 9 allows the connection.
  • the inlet nozzle 10 is sealed against the core flange 9 with a seal 12.
  • a one-piece filter 12a made of a plastic-coated mesh is inserted between the inlet nozzle 10 and the core flange 9, a one-piece filter 12a made of a plastic-coated mesh is inserted. Dash-dotted with 8 'a cap for the inlet port 11 is shown.
  • the core flange 9 and the inlet nozzle 10 form an outlet of the pump 1.
  • the output flange has an approximately cylindrical central recess 6a, in which the armature piston 13 of a drive unit, which consists of the
  • Anchor piston 13 and a set in a recess 13 a of the armature piston 13 piston rod 14 is received axially displaceable.
  • the armature piston 13 and the piston rod 14 are caulked together.
  • the armature piston 13 is in its de-energized coil. 4
  • the piston rod 14 has a continuous central bore 14b.
  • an insert member 60 is inserted, which has a cylindrical main portion 60a, which connects to a likewise formed as a flange mounting portion 60b.
  • the attachment portion 60b is caulked in a hollow cylindrical receptacle 13b of the armature piston 13 widened in relation to the recess 13a.
  • Main section 60a this is continued by a tapered portion 60c, which itself merges into a conical centering pin 60d.
  • On the opposite side of the main portion 60a of the mounting portion 60b projects with the remaining portions concentric cylindrical extension 60e, on which a sealing ring 61 sits in the joint area with the mounting portion 60b.
  • Another, identical to the sealing ring 61 sealing ring 62 is disposed at the mouth of the outlet channel 7 in the central recess 6a.
  • the two sealing rings 61, 62 abut each other, and the extension 60 penetrates a distance into the sealing ring 62, so that a largely dense separation of the outlet channel 7 from the central recess 6a.
  • the sealing rings 61, 62 dampen the stop of the moving parts.
  • the core flange 9 has a central recess 9a facing the inlet nozzle 10 and, at its end facing the armature piston 13, a conically tapered end, to the cone shape of the outlet
  • a guide sleeve 15 is inserted, which has a central bore 15d into which the piston rod 14 can penetrate. This jumps a cylindrical ring portion 15e of
  • the guide sleeve 15 in the web portion 9 d and centered the guide sleeve in the through hole 9 c.
  • the guide sleeve 15 has a radial inlet 15a, which opens into an annular gap region 16 between the core flange 9 and the guide sleeve 15 and thus a connection between an inner region 15b of the guide sleeve 15 and the annular gap 16 produces.
  • the guide sleeve 15 also has a recess 15c facing the inlet nozzle 10 in the form of an annular step widening the bore 15d into which a valve arrangement 17, which will be explained in more detail below, can be inserted. In Fig. 2, this area of the pump 1 is enlarged and thus shown better recognizable. It can be seen that the recess 15c forms a receptacle for the valve 17, which is provided in a pump part, in the present case the guide sleeve 15. It is understood that such
  • Recording can also be provided in another part of the pump.
  • a compression spring 18 which rests with its opposite end against a shoulder 13b defining end portion of the armature piston 13 and thus biases the armature piston 13 in the outlet direction.
  • the central bore 14b of the piston rod 14 creates in the area not filled by the insert member 60, a fluid connection between the inner region 15b and a delivery chamber 19, which is bounded by the output flange 6, the core flange 9 and the bobbin 3 of the housing 2.
  • the piston rod 14 has radial connecting bores 14a which, in the region of the end face of the armature piston 13 facing the inlet, establish a connection between the central bore 14b of the piston rod 14 and the delivery chamber 19.
  • valve assembly 17 is designed as a suction valve and has a
  • Valve body 30 which has a central continuous valve bore 30a, in which a valve member plunger 31 is axially displaceable.
  • a valve seat 32 On a side facing the armature piston 13 end face of the valve body 30 is a valve seat 32 defining recess, which is lined with an elastomeric material 35 is formed.
  • the elastomeric material 35 coats the valve seat, but at the same time forms a Anschlagdämpf
  • this has a radially outwardly widening stop surface 31a, which is greater than the valve bore 30a of the valve body 30 and thus forms a valve member for closing the valve assembly, if this under the bias of a helical spring trained preload spring 33 is pulled against the valve seat 32.
  • the preload spring 33 is supported at one end against an annular region 30b of the valve body 30 and at the other end against an attachment part 34, which faces away from the anchor piston 13
  • Valve member 31 a in the direction of the valve seat 32 in a closed position, so that the Ventilanordung 17 a check valve against the
  • valve arrangement 17 has the advantage that, at least in the closed state of the valve arrangement 17, the valve member 31a does not have the piston rod end side of the valve
  • Valve body 30 protrudes.
  • a Verstemmring 36 is caulked radially in a step 10d of the inlet nozzle 10 and thus forms a non-positive abutment against
  • Verstemmring 36 has a central hole 36 a, through which the valve body 30 protrudes toward the inlet nozzle 10, and an eccentric
  • Perforation 37 which for a fluid connection in a radial region to the Annular gap 16 is determined.
  • a fluid connection between the annular gap 16 and the perforation 37 takes place through a connecting region 16a.
  • a damper assembly 40 Disposed between the caulking ring 36 and a step 30a of the valve body 30 is a damper assembly 40 having an elastomeric ring 41 (shown in black in FIG. 2) formed in the manner of an O-ring, which is supported directly on the step 30a, and a molded plastic
  • Damping plate 42 which is supported against the Verstemmring 36 includes.
  • a radial extension 42a of the damping plate 42 penetrates between the end face of the sliding sleeve 15 and the Verstemmring 36 a.
  • the damping plate 42 may also be made of metal or other material suitable as a spacer. In particular, it is also possible, if appropriate
  • the valve body 30 has a cylindrical lateral surface portion 30 c, which is adapted to the diameter of the recess 15 c, wherein the outer diameter of the lateral surface portion 30 c with the
  • Damping assembly 40 is approximately aligned.
  • the lateral surface portion 30c is not caulked in the recess 15c, but axially displaceable to this. Due to its elastic property, the damping arrangement 40 in this case biases the valve body 30 in the direction of the outlet against the corresponding annular shoulder 15f of the guide sleeve 15. It is possible the
  • Damper assembly 40 also form as a spring member. Alternatively, it is also possible to inject the damping arrangement 40 completely or partially to the valve body 30.
  • FIG. 3 shows an alternative embodiment to that of FIGS. 1 and 2, in which the same reference numerals as in FIGS. 1 and 2 denote the same or structurally comparable parts.
  • Fig. 1 In contrast to Fig. 1 are the same reference numerals as in FIGS. 1 and 2 denote the same or structurally comparable parts.
  • Support body 71 made of metal or plastic and an elastomeric jacket 72 applied thereto with a Dehnungsringaus Principleung 72a provided for this purpose.
  • the elastomer sheathing 72 is vulcanized or shrunk onto the carrier body 71 and surrounds it in particular radially as well as on the end face facing the piston rod 14.
  • the insert 70 has a through opening. This can be the tightness of the
  • Suction valve improve because the elastomeric material 35 of the valve seat 32 is then not mechanically stressed by shocks.
  • valve member 31a is returned to the valve seat 32 under the force of the preload spring 33.
  • Valve body 30 hits. Even at low, especially at high
  • Displaced guide sleeve 15 damps the Anschlagdämpf constitutional 35 a of the elastomeric material 35 in the valve body 30, the kickback, so that vibrations or noises are avoided even when knocking back.
  • valve assembly is designed as a suction valve on the inlet side of the pump 1. It is understood that the valve assembly may also be arranged as a check valve on the outlet side of the pump, in which case the damping arrangement on the side of the valve seat and the
  • Anintuitdämpf evaluation 35a are provided on the valve seat opposite side of the valve body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Check Valves (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

L'invention concerne une pompe destinée à refouler un fluide, comprenant une entrée, une sortie et une chambre de refoulement, une soupape (17) étant disposée entre l'entrée et la chambre de refoulement ou entre la chambre de refoulement et la sortie. Ladite soupape (17) comporte un corps de soupape (30) muni d'un siège de soupape (32) dirigé vers la sortie et un obturateur (31a) coopérant avec le siège de soupape (32). L'obturateur (31a) est poussé sous précontrainte contre le siège de soupape (32) amenant ainsi la soupape (17) en position fermée et laisse passer le fluide dans le sens de refoulement en étant soulevé dans le sens opposé à la précontrainte, le corps de soupape (30) étant logé dans un logement (15c) d'une partie (15) de la pompe. En outre, l'invention concerne une pompe dans laquelle le développement du bruit et des vibrations est réduit par le fait que, lors du fonctionnement de la pompe, le corps de soupape (30) est mobile axialement par rapport au logement (15c) qui le reçoit.
EP11719157.7A 2010-03-26 2011-03-18 Pompe ayant une valve avec un dispositif d'amortissement Not-in-force EP2519744B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010013106A DE102010013106A1 (de) 2010-03-26 2010-03-26 Pumpe
PCT/DE2011/000284 WO2011116752A2 (fr) 2010-03-26 2011-03-18 Pompe

Publications (2)

Publication Number Publication Date
EP2519744A2 true EP2519744A2 (fr) 2012-11-07
EP2519744B1 EP2519744B1 (fr) 2013-07-24

Family

ID=44510613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11719157.7A Not-in-force EP2519744B1 (fr) 2010-03-26 2011-03-18 Pompe ayant une valve avec un dispositif d'amortissement

Country Status (6)

Country Link
US (1) US9464628B2 (fr)
EP (1) EP2519744B1 (fr)
CN (1) CN102918267B (fr)
DE (1) DE102010013106A1 (fr)
RU (1) RU2527928C2 (fr)
WO (1) WO2011116752A2 (fr)

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DE102008013440A1 (de) * 2008-03-10 2009-09-17 Thomas Magnete Gmbh Magnetbetätigte Hubkolbenpumpe mit hydraulischer Dämpfung

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Also Published As

Publication number Publication date
CN102918267A (zh) 2013-02-06
EP2519744B1 (fr) 2013-07-24
CN102918267B (zh) 2016-08-31
US20130034459A1 (en) 2013-02-07
US9464628B2 (en) 2016-10-11
RU2527928C2 (ru) 2014-09-10
WO2011116752A2 (fr) 2011-09-29
RU2012145471A (ru) 2014-05-10
DE102010013106A1 (de) 2011-09-29
WO2011116752A3 (fr) 2012-03-01

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