FI121609B - Method and apparatus for accurate control of fluid flow - Google Patents

Method and apparatus for accurate control of fluid flow Download PDF

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Publication number
FI121609B
FI121609B FI20095654A FI20095654A FI121609B FI 121609 B FI121609 B FI 121609B FI 20095654 A FI20095654 A FI 20095654A FI 20095654 A FI20095654 A FI 20095654A FI 121609 B FI121609 B FI 121609B
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FI
Finland
Prior art keywords
shaft
hollow
wheel
rotation
wall
Prior art date
Application number
FI20095654A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20095654A (en
FI20095654A0 (en
Inventor
Pekka Leskinen
Original Assignee
Pekka Leskinen
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Application filed by Pekka Leskinen filed Critical Pekka Leskinen
Priority to FI20095654A priority Critical patent/FI121609B/en
Publication of FI20095654A0 publication Critical patent/FI20095654A0/en
Priority to PCT/FI2010/050426 priority patent/WO2010142842A1/en
Publication of FI20095654A publication Critical patent/FI20095654A/en
Application granted granted Critical
Publication of FI121609B publication Critical patent/FI121609B/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
    • G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
    • G01F11/22—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for liquid or semiliquid
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Measuring Volume Flow (AREA)

Description

Menetelmä ja laite nestevirtauksen tarkaksi säätämiseksi Tämä keksintö koskee menetelmää ja laitetta nestevirtauksen tarkaksi säätämi-5 seksi.This invention relates to a method and apparatus for fine-tuning a liquid flow.

Suomalaisessa patenttihakemuksessa 20080086 on kuvattu laite, jonka avulla on mahdollista jakaa nestevirtaus tasan useampaan kohteeseen. Keksinnön mukaisesti hammasratasparien kuljettama nestevirtaus täsmätään yhtäläiseksi käyttä-10 mällä itsesäätyvää järjestelmää, joka perustuu siihen, että epätasapaino korjaantuu itsesäätyvästi ontolla akselilla rajoitetusti pyörivän rattaan liikkeen aiheuttaman kuristusvaikutuksen takia.The Finnish patent application 20080086 describes a device which enables the liquid flow to be evenly distributed over several objects. According to the invention, the fluid flow conveyed by the gear wheels is matched using a self-adjusting system, which is based on the fact that the imbalance is corrected automatically on the hollow shaft due to the throttle effect caused by the rotation of the wheel.

Tämän keksinnön tarkoitus on käyttää olennaisesti edellä kuvatun tyyppistä ratkai-15 sua, mutta nyt onkin yllättäen havaittu, että käyttämällä ulkopuolisen käyttölaitteen aikaansaamaa onton akselin pyöritystä saadaan aikaan pyöritysnopeudesta riippuva nesteen itsesäätyvä, tarkka annostelu.It is an object of the present invention to substantially utilize a solution of the type described above, but it has now surprisingly been found that the use of a hollow shaft rotation provided by an external actuator provides a self-adjusting, fluid-dependent, metering of fluid.

Edellä mainittu ja muut tämän keksinnön edut ja hyvät puolet on aikaansaatu siten 20 kuin esitetään tunnusomaiseksi oheisissa patenttivaatimuksissa.The foregoing and other advantages and advantages of the present invention are provided as set forth in the appended claims.

Keksintöä kuvataan seuraavassa lähemmin viittaamalla oheisiin piirustuksiin, 0 joissa δ c\i ^ 25 Kuvio 1 esittää rajäytyskuvaa keksinnön mukaisesta laitteesta jaThe invention will now be described in more detail with reference to the accompanying drawings, in which: δ c \ i ^ Figure 1 shows a schematic view of an apparatus according to the invention and

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o ^ Kuviossa 2 esitetään poikkileikkaus mainitusta laitteesta.Fig. 2 is a cross-sectional view of said device.

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Kuviossa 1 esitetään siis räjäytyskuva keksinnön eräästä suoritusmuodosta.Thus, Figure 1 is an exploded view of an embodiment of the invention.

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Laite 1 muodostuu akseleille 2 ja 3 kiinnitetyistä hammasrattaista 4 ja 5. Kootussa laitteessa rattaat 4 ja 5 ovat hyvin tiiviillä tavalla sovitettuina rataspesän 6 käsittävään välikappaleeseen 7. Kun päätykappaleet 8 ja 9 on koottu paketiksi välikappaleen 7 kanssa, rattaat 4 ja 5 ovat pesässä 6 siten, että välyksetön sovitus sekä 2 pesän 6 seinämiin että päätykappaleisiin 8 ja 9 on varmistettu. Kokoaminen voidaan suorittaa sopivasti ruuveilla, joiden reikiä on viitteenomaisesti merkitty numerolla 12. Mikä tahansa muukin kiinnitystäpä on toki mahdollinen.The device 1 consists of sprockets 4 and 5 attached to the shafts 2 and 3. In the assembled device, the sprockets 4 and 5 are fitted very tightly to the spacer 7 comprising the gear housing 6. When the end pieces 8 and 9 are assembled with the spacer 7, the sprockets , to ensure that there is no clearance between the walls of the housing 2 and the end pieces 8 and 9. The assembly can be conveniently performed by means of screws, the holes of which are indicated by reference 12. Any other attachment head is of course possible.

5 Akselin 3 tiiviys on varmistettu päätytulppien 10 ja 11 avulla. Rattaan 5 sovitus akselille 3 on vapaasti pyörivä. Sen sijaan rattaan 4 pyöriminen akselilla 2 on rajoitettu niin, että vain tietyn suuruinen suhteellinen liike akselin ja rattaan välillä on mahdollista.5 Shaft 3 is sealed with end plugs 10 and 11. The fitting of the sprocket 5 to the shaft 3 is rotatable. Instead, the rotation of the wheel 4 on the shaft 2 is limited so that only a certain relative movement between the shaft and the wheel is possible.

10 Kuviossa 2 esitetään edellä mainitun suhteellisen liikkeen mahdollistava ominaisuus lähemmin. Nimittäin rattaassa 4 on lähinnä akselia 2 syvennys 13, joka kuten nähdään, on muodoltaan akselin säteen suuntaisin reunoin varustettu. Syvennys ulottuu etenkin rattaan reunasta toiseen. Akselilla 2 on puolestaan tappimainen elin 14, jonka suunta on edullisesti akselin säteen suuntainen. Kun laite on koottu, 15 tappi 14 on syvennyksen sisällä ja akselin ja rattaan keskinäinen liike on mahdollinen siinä laajuudessa, jossa tappi liikkuu syvennyksessä sen reunasta toiseen. Tapin 14 toista ääriasentoa on hahmoteltu viitenumerolla 14’.Figure 2 illustrates the above-mentioned relative motion enabling feature in greater detail. Namely, the wheel 4 has a recess 13 closest to the shaft 2, which, as can be seen, is provided in the form of radial edges of the shaft. In particular, the recess extends from one end of the wheel to the other. The shaft 2, in turn, has a pin-like member 14, the direction of which is preferably parallel to the radius of the shaft. Once the device has been assembled, the pin 15 is within the recess and movement between the shaft and the wheel is possible to the extent that the pin moves within the recess from one edge to the other. The second end position of the pin 14 is outlined by reference numeral 14 '.

Sekä kuviossa 1 että kuviossa 2 nähdään reikä tai kanava 15. Tätä kanavaa myö-20 ten syötetään keksinnön mukaisella laitteella tarkasti annosteltava neste laitteeseen. Moottoria, joka pyörittää laitetta nesteen annostelemiseksi, on merkitty viitenumerolla 16. Moottori kytkeytyy akseliin 2 sopivan välikappaleen 18 avulla.Both Fig. 1 and Fig. 2 show a hole or channel 15. This channel is also used to supply the device according to the invention with a metering fluid. The motor which rotates the device for dispensing the liquid is designated by reference numeral 16. The motor engages the shaft 2 by means of a suitable spacer 18.

o ^ Akseli 2 on ontto, kuten selkeästi on nähtävissä kuviosta 2. Akselin seinämän £! 25 lävistävää reikää/kanavaa on merkitty viitenumerolla 20.o ^ The shaft 2 is hollow, as is clearly seen in Figure 2. The shaft wall £! The 25 piercing holes / channels are designated 20.

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o ϊ Lyhyesti sanottuna toiminta on seuraava. Paineenalainen, annosteltava nesteo ϊ In short, the operation is as follows. Pressurized liquid to dispense

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^ tuodaan rattaiden 4 ja 5 väliin kanavan 15 kautta. Rattaat suorittavat nesteenis introduced between the strollers 4 and 5 through the channel 15. The wheels carry fluid

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^ kuljetuksen eteenpäin päätykappaleessa 9 olevan syvennyksen 20 kautta ontontransporting through the recess 20 in the end piece 9 is hollow

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o 30 akselin 2 vaipassa olevan kanavan 17 kautta akselin sisälle ja ulostulonipan 1930 through a passage 17 in the sheath 2 of the shaft 2 to the inside of the shaft and an outlet nipple 19

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kautta eteenpäin haluttuun kohteeseen.through to the desired destination.

Keksinnön mukaisen laitteen avulla saavutetaan tarkka nesteen virtauksen säätö siten, että rattaan 4 ja akselin 2 edellä kuvattu keskinäisen aseman muutos tapin 3 14 ja rattaan 4 syvennyksen 13 suhteen aikaansaa automaattisesti tarkan säädön. Nimittäin, jos kanavasta 15 sisään virtaava neste pyrkii pyörittämään rattaita 4 ja 5 nopeammin kuin mitä moottori 16 pyörittää akselia 2, se merkitsee rattaan 4 aseman muuttumista akselin 2 suhteen. Tämä muutos merkitsee rattaan suhteellista 5 pyörähtämistä “vastapäivään” akselin suhteen. Tämä liike alkaa sulkea virtausauk-koa 17, mikä kuristus merkitsee tasapainotilaan hakeutumista ja virtauksen pysymistä erittäin tarkasti moottorin antamassa tahdissa.By means of the device according to the invention, precise control of the fluid flow is achieved such that the above-mentioned change of the relative position of the gear 4 and the shaft 2 with respect to the pin 3 14 and the recess 13 of the gear 4 Namely, if the fluid flowing in from the channel 15 tends to rotate the sprockets 4 and 5 faster than the motor 16 rotates the shaft 2, it implies a change in the position of the sprocket 4 relative to the shaft 2. This change implies a relative rotation of the wheel 5 counterclockwise relative to the axis. This movement begins to close the flow aperture 17, which is a throttle which means reaching the equilibrium state and maintaining the flow very accurately at the rate provided by the engine.

Kuviossa 2 on vielä esitetty eräs toisen suoritusmuodon mahdollistava osa, nimit-10 täin jousi 21. Silloin kun käytetään moottoria 16, jousta 21 ei käytetä. Mutta kun syvennykseen 13 lisätään tappimaisen elimen 14 tiettyyn asemaan normaalitilanteessa kääntävä jousi 21, voidaan moottori 16 korvata jarrulla, jota tähän ei ole esitetty. Jarrulaite ja jousi toimivat yhdessä samalla tavalla kuin toimii moottori 16 ilman jousta 21.Figure 2 further shows a part allowing another embodiment, denominated as a spring 21. When the motor 16 is used, the spring 21 is not used. But, when a pivoting spring 14 is inserted in a certain position of the pin-like member 14 in a normal position, the motor 16 can be replaced by a brake (not shown). The brake device and the spring work together in the same way as the motor 16 operates without the spring 21.

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Edellä esitetyssä perusrakenteessa on vain yksi hammasrataspari. On kuitenkin selvää, että pareja voi olla useampia, jos siihen on tarvetta.There is only one set of gears in the above structure. However, it is clear that there may be more pairs if needed.

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Claims (8)

1. Förfarande för exakt dosering av vätska under tryck med hjälp av en anordning som omfattar ett kugghjulpar (4,5) monterade pä axlar (2, 3) i ett kugghjulhus har 5 en kanal (15) i sin vägg, varvid axeln (2) är ihälig och axeln (2) har en öppning (17) i sin vägg för att möjliggöra ett vätskeflöde mellan axelns in- och utsida, kän-netecknat av att doseringshastigheten för vätskan som tillförs kugghjulparet (4, 5) genom kanalen (15) installs genom att rotera den ihäliga axeln (2) med hjälp av en drivanordning (16) eller med användande av en bromsande anordning förbunden 10 med en fjäder (21) som motstär axelns (2) vridning, och att den del av flödet som överskrider den önskade mängden skärs bort genom hjulets (4) vridning i förhäl-lande tili axeln (2), varvid man genom vridningen stryper öppningen (17).A method for accurately dispensing liquid under pressure by means of a device comprising a gear pair (4,5) mounted on shafts (2, 3) in a gear housing having a channel (15) in its wall, the shaft (2) ) is hollow and the shaft (2) has an aperture (17) in its wall to allow a fluid flow between the inside and outside of the shaft, characterized in that the dosing rate of the fluid supplied to the gear pair (4, 5) through the channel (15) is installed by rotating the hollow shaft (2) by means of a drive device (16) or by using a braking device 10 connected to a spring (21) which opposes the rotation of the shaft (2), and that the portion of the flow exceeding it the desired amount is cut away by the rotation of the wheel (4) in relation to the shaft (2), whereby the opening (17) is throttled by the rotation. 2. Förfarande enligt patentkrav 1, kännetecknat av att det exakt doserade väts-15 keutflödet styrs ut genom axelns (2) ihäliga insida i axelns ända.Method according to claim 1, characterized in that the precisely dosed liquid flow is controlled through the hollow inside of the shaft (2) at the end of the shaft. 3. Förfarande enligt patentkrav 1, kännetecknat av att hjulets (4) vridning i förhäl-lande tili axeln (2) begränsas med ett tappliknande organ (14) pä axeln (2) som rör sig i en fördjupning i hjulets mot axelytan liggande yta. 20Method according to claim 1, characterized in that the rotation of the wheel (4) in relation to the shaft (2) is limited by a pin-like member (14) on the shaft (2) which moves in a depression in the surface of the wheel against the shaft surface. 20 4. Anordning för exakt dosering av vätska under tryck, omfattande ett kugghjulpar (4,5) monterade pä axlar (2, 3) i ett kugghjulhus som har en kanal (15) i sin vägg, varvid axeln (2) är ihälig och axeln (2) har en öppning (17) i sin vägg för att möjlig- 2 göra ett vätskeflöde mellan axelns in- och utsida, kännetecknad av att anordnin- ^ 25 gen omfattar en drivanordning (16) som roterar axeln (2) eller en bromsanordning ^ förbunden med en fjäder (21) som motstär axelns (2) vridning, och att hjulet (4) i ° begränsad män kan vridas i förhällande tili den ihäliga axeln (2) för att göra öpp- CC ningen (17) mindre i regleringssyfte. sj- LD CD LO g 30 5. Anordning enligt patentkrav 4, kännetecknad av att anordningen omfattar en o stuts (19) i den ihäliga axelns (2) ända för att leda ut den doserade vätskan genom axelns (2) ihäliga insida.Apparatus for precise metering of liquid under pressure, comprising a gear pair (4,5) mounted on shafts (2, 3) in a gear housing having a channel (15) in its wall, the shaft (2) being hollow and the shaft (2) has an aperture (17) in its wall to allow a fluid flow between the inside and outside of the shaft, characterized in that the device comprises a drive (16) rotating the shaft (2) or a braking device. förb connected to a spring (21) which counteracts the rotation of the shaft (2), and that the wheel (4) in ° restricted men can be rotated relative to the hollow shaft (2) to make the opening (17) smaller for the purpose of regulation . 5. Device according to claim 4, characterized in that the device comprises an o-plug (19) in the end of the hollow shaft (2) for passing the dosed liquid through the hollow inside of the shaft (2). 6. Anordning enligt patentkrav 4, kännetecknad av att pa axeln (2) finns ett tapp-liknande organ (14) för att begränsa hjulets (4) vridning i förhallande till axeln (2) och att hjulet omfattar en fördjupning (13) där tappen (14) kan röra sig frän den ena kanten till den andra kanten avfördjupningen. 5Device according to claim 4, characterized in that on the shaft (2) there is a pin-like means (14) for limiting the rotation of the wheel (4) in relation to the shaft (2) and the wheel comprises a recess (13) where the pin (14) can move from one edge to the other edge of the depression. 5 7. Anordning enligt patentkrav 4, kännetecknad av att drivanordningen (16) är en elmotor som kan kopplas till den ihäliga axelns ända för att rotera den.Device according to claim 4, characterized in that the driving device (16) is an electric motor which can be coupled to the end of the hollow shaft for rotating it. 8. Anordning enligt patentkrav 6, kännetecknad av att fjädem (21) är placerad i 10 fördjupningen (13) och är stödd mot det tappliknande organet (14) och fördjupnin- gens vägg. o δ CM CM CO 0Device according to claim 6, characterized in that the spring (21) is located in the depression (13) and is supported against the pin-like member (14) and the wall of the depression. o δ CM CM CO 0 1 CC CL LO CD LO CD O O CM1 CC CL LO CD LO CD O O CM
FI20095654A 2009-06-11 2009-06-11 Method and apparatus for accurate control of fluid flow FI121609B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20095654A FI121609B (en) 2009-06-11 2009-06-11 Method and apparatus for accurate control of fluid flow
PCT/FI2010/050426 WO2010142842A1 (en) 2009-06-11 2010-05-27 Method and device for the precise regulation of a liquid flow

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FI20095654A FI121609B (en) 2009-06-11 2009-06-11 Method and apparatus for accurate control of fluid flow
FI20095654 2009-06-11

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FI20095654A FI20095654A (en) 2010-12-12
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB440652A (en) * 1934-06-29 1935-12-30 Geoffrey Mccall A new or improved self closing valve
US3650305A (en) * 1970-01-29 1972-03-21 Harvey Dental Specialty Co Valve for dispensing measured quantities of liquid
GB2057572B (en) * 1979-08-30 1984-03-07 White W T Device for metering fluid flow
US5120206A (en) * 1991-04-08 1992-06-09 Bridgestone/Firestone, Inc. Gear metering pump for compounded elastomeric material
GB9221624D0 (en) * 1992-10-15 1992-11-25 Kodak Ltd Fluid flow divider
WO2002093506A1 (en) * 2001-05-11 2002-11-21 Roper Pump Company Improved fluid metering device
KR100838025B1 (en) * 2007-01-19 2008-06-12 주식회사 경동나비엔 Flow control valve

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WO2010142842A1 (en) 2010-12-16
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