RO134247A2 - Pneumatic oscillating system for drive and regulation of a piston pump used in medical research - Google Patents

Pneumatic oscillating system for drive and regulation of a piston pump used in medical research Download PDF

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Publication number
RO134247A2
RO134247A2 ROA201801028A RO201801028A RO134247A2 RO 134247 A2 RO134247 A2 RO 134247A2 RO A201801028 A ROA201801028 A RO A201801028A RO 201801028 A RO201801028 A RO 201801028A RO 134247 A2 RO134247 A2 RO 134247A2
Authority
RO
Romania
Prior art keywords
pneumatic
piston
cylinder
distributer
oscillating system
Prior art date
Application number
ROA201801028A
Other languages
Romanian (ro)
Inventor
Petrin Drumea
Liliana Dumitrescu
Gabriela Matache
Original Assignee
Institutul Naţional De Cercetare-Dezvoltare Pentru Optoelectronică - Inoe 2000 Ihp - Filiala Institutul De Cercetări
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 Institutul Naţional De Cercetare-Dezvoltare Pentru Optoelectronică - Inoe 2000 Ihp - Filiala Institutul De Cercetări filed Critical Institutul Naţional De Cercetare-Dezvoltare Pentru Optoelectronică - Inoe 2000 Ihp - Filiala Institutul De Cercetări
Priority to ROA201801028A priority Critical patent/RO134247A2/en
Priority to EP19020605.2A priority patent/EP3663577A1/en
Publication of RO134247A2 publication Critical patent/RO134247A2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • 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
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
    • F04B9/1253—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor one side of the double-acting piston fluid motor being always under the influence of the fluid under pressure
    • 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
    • F04B53/1077—Flow resistance valves, e.g. without moving parts
    • 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
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous

Landscapes

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

Abstract

The invention relates to a pneumatic oscillating system for actuation and regulation of a piston pump used in medical research. According to the invention, the pneumatic oscillating system for drive and regulation consists of an air preparation unit FRU (3), a pneumatic distributer (2), some discharge throttles (1), an oscillating and distributing valve (4), a piston (5), and the valve-control mechanism for pumping the work liquid, the rod cavity of the pneumatic cylinder being permanently connected to the pressure source, and the piston cavity (5) of the pneumatic cylinder being alternatively connected to the pressure source or to the atmosphere by means of the distributer (2) with pneumatic control, the pneumatic control of the distributer (2) being initially discharged into atmosphere by the throttle (1) and the cylinder piston (5), due to differential connection to the pressure source, moves to the right, until inside the cylinder an orifice (a) is connected to an orifice (b), when the pneumatic control of the distributer (2) is charged with pressure and it gets into the other distribution position connecting the piston cavity (5) of the cylinder to the atmosphere, now the pressure of the cylinder rod cavity enabling the cylinder piston (5) to move to the left for a while, until the control circuit pressure is discharged by the throttle (1) into the atmosphere, and the distributer (2) returns into the position given by the spring and differentially actuates the pneumatic cylinder again, the piston (5) moves again to the right until the connection between the orifice (a) and orifice (b) is made, when the cycle is resumed, thus the pneumatic cylinder rod actuating the piston (5) which pumps the work liquid.

Description

SISTEM PNEUMATIC OSCILANT DE ACȚIONARE Șl REGLARE A UNEI POMPE CU PISTON UTILIZATĂ ÎN CERCETAREA MEDICALĂPNEUMATIC PNEUMATIC SYSTEM FOR ACTUATION AND ADJUSTMENT OF A PISTON PUMP USED IN MEDICAL RESEARCH

Sistemul de comandă și de acționare pneumatică al unei pompei cu piston permite asigurarea debitului de fluid de lucru prin deplasarea pistonului de lucru pe o cursă (c) corelată cu frecvența de comandă pneumatică obținută prin variația debitului de alimentare a oscilatorului pneumatic.The pneumatic control and actuation system of a piston pump allows the working fluid flow to be ensured by moving the working piston on a stroke (c) correlated with the pneumatic control frequency obtained by varying the supply flow of the pneumatic oscillator.

Sunt cunoscute sisteme de acționare și reglare cu pompe hidraulice clasice, care utilizează ca fluid de lucru uleiul hidraulic, iar in cazul unei avarii acesta poate contamina grav mediul de lucru. Schemele hidraulice clasice conțin aparate de reglare a debitului si a presiunii si pe langa faptul ca se ridica prețul de cost al Instalației, se introduc si rezistente hidraulice in circuit, ceea ce creeaza pierderi de presiune si generează căldură reziduala nedorita.Actuation and regulation systems with conventional hydraulic pumps are known, which use hydraulic oil as working fluid, and in case of a failure it can seriously contaminate the working environment. The classic hydraulic schemes contain flow and pressure regulators and besides the fact that the cost price of the Installation is raised, hydraulic resistors are also introduced in the circuit, which creates pressure losses and generates unwanted residual heat.

Unele aplicatii permit acționari cu sisteme pneumatice, dar si acestea pot contamina mediul in care lucrează, din cauza refulării locale a aerului din fiecare aparat care este acționat. De asemenea sistemele pneumatice ca si cele hidraulice sunt foarte zgomotoase si necesita activitati de întreținere periodica.Some applications allow actuators with pneumatic systems, but they can also contaminate the environment in which they work, due to the local discharge of air from each device that is operated. Also, pneumatic and hydraulic systems are very noisy and require regular maintenance.

Sistemul pneumatic oscilant de acționare și reglare este alcătuit din:The pneumatic oscillating drive and adjustment system consists of:

a) bloc preparare aer (FRU) - 3;a) air preparation block (FRU) - 3;

b) distribuitor pneumatic - 2;b) pneumatic distributor - 2;

c) drosele de descărcare - 1;c) unloading trucks - 1;

d) sertar de distribuție și oscilație - 4;d) distribution and oscillation drawer - 4;

e) pistonul și distribuția cu supape pentru pomparea lichidului de lucru - 5;e) piston and valve distribution for pumping the working fluid - 5;

Descrierea funcționării:Description of operation:

Cavitatea de la tijă a cilindrului pneumatic este legată permanent la sursa de presiune, iar cavitatea de la piston a cilindrului pneumatic este legată alternativ la sursa de presiune sau la atmosferă prin intermediul distribuitorului cu comandă pneumatică 2.The rod cavity of the pneumatic cylinder is permanently connected to the pressure source, and the piston cavity of the pneumatic cylinder is alternately connected to the pressure source or to the atmosphere via the pneumatically controlled distributor 2.

Inițial comanda pneumatică a distribuitorului este descărcată la atmosferă prin droselul 1, și pistonul cilindrului datorită legării diferențiale la sursa de presiune se deplasează spre dreapta, până când în interiorul cilindrului se leagă orificiul „a la orificiul „b”. în acest moment se încarcă cu presiune comanda pneumatică a distribuitorului și acesta trece pe cealaltă poziție de distribuție legând la atmosferă cavitatea de la piston a cilindrului. Acum presiunea din cavitatea de la tijă a cilindrului face ca pistonul cilindrului să se deplaseze spre stânga o perioadă de timp până când presiunea din circuitul de comandă se descarcă prin droselul 1 la atmosferă.Initially the pneumatic control of the distributor is discharged to the atmosphere through the throttle 1, and the cylinder piston due to the differential connection to the pressure source moves to the right, until inside the cylinder the hole "a" is connected to the hole "b". At this point the pneumatic control of the distributor is loaded with pressure and it passes to the other distribution position connecting to the atmosphere the piston cavity of the cylinder. Now the pressure in the cylinder rod cavity causes the cylinder piston to move to the left for a period of time until the pressure in the control circuit is discharged through the throttle 1 into the atmosphere.

Distribuitorul revine pe poziția dată de arc și acționează din nou diferențial cilindrul pneumatic. Pistonul se deplasează din nou spre dreapta până când se face legătura între orificiile „a” și „b”, când se reia ciclul.The distributor returns to the position given by the spring and actuates the pneumatic cylinder again differentially. The piston moves to the right again until the holes "a" and "b" are connected when the cycle is resumed.

în acest fel tija cilindrului pneumatic acționează pistonul 5 care pompează lichidul de lucru.In this way the rod of the pneumatic cylinder actuates the piston 5 which pumps the working liquid.

Caracteristici funcționale: p=4+10 bar; f=0,5+10 Hz, Dp= 20+63 mm.Functional characteristics: p = 4 + 10 bar; f = 0.5 + 10 Hz, D p = 20 + 63 mm.

Claims (4)

REVENDICĂRI 1. Sistem oscilant pneumatic de acționare și reglare a unei pompe cu piston caracterizat prin aceea că se alimenează la o rețea pneumatică de max 10 bar și funcționează automat fără intervenția unui panou sau bloc electric - electronic de comandă.1. Pneumatic oscillating system for actuating and regulating a piston pump characterized in that it is fed to a pneumatic network of max 10 bar and operates automatically without the intervention of an electrical control panel or electronic block. 2. Sistem oscilant pneumatic caracterizat prin aceea că este alcătuit dintr-un grup de pompare aer - standard, un oscilator pneumatic cu comandă și acționare (CS) cu frecvență maximă de 10 Hz și un cilindru sertar pneumatic de acționare a pistonului de pompare a fluidului de lucru.2. Pneumatic oscillating system characterized in that it consists of a standard air-pumping unit, a pneumatic oscillator with control and actuation (CS) with a maximum frequency of 10 Hz and a pneumatic drawer cylinder for actuating the fluid pumping piston For work. 3. Sistem oscilant pneumatic caracterizat prin aceea că realizarea simplă a cursei de lucru se face fără echipamente de reglare doar prin alegerea a două orificii prestabilite care asigură limitele de deplasare.3. Pneumatic oscillating system characterized in that the simple realization of the working stroke is done without adjusting equipment only by choosing two predefined holes that ensure the travel limits. 4. Sistem oscilant pneumatic caracterizat prin aceea că reglarea frecvenței de lucru se realizează prin variația debitului de alimentare a oscilatorului pneumatic, prin intermediul regulatorului din blocul de preparare aer FRU.4. Pneumatic oscillating system characterized in that the regulation of the working frequency is achieved by the variation of the supply flow of the pneumatic oscillator, by means of the regulator in the FRU air preparation block.
ROA201801028A 2018-12-03 2018-12-03 Pneumatic oscillating system for drive and regulation of a piston pump used in medical research RO134247A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ROA201801028A RO134247A2 (en) 2018-12-03 2018-12-03 Pneumatic oscillating system for drive and regulation of a piston pump used in medical research
EP19020605.2A EP3663577A1 (en) 2018-12-03 2019-10-29 Piston pump drive and control pneumatic oscillating system used in medical research

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ROA201801028A RO134247A2 (en) 2018-12-03 2018-12-03 Pneumatic oscillating system for drive and regulation of a piston pump used in medical research

Publications (1)

Publication Number Publication Date
RO134247A2 true RO134247A2 (en) 2020-06-30

Family

ID=68617977

Family Applications (1)

Application Number Title Priority Date Filing Date
ROA201801028A RO134247A2 (en) 2018-12-03 2018-12-03 Pneumatic oscillating system for drive and regulation of a piston pump used in medical research

Country Status (2)

Country Link
EP (1) EP3663577A1 (en)
RO (1) RO134247A2 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528482A1 (en) * 1965-05-06 1969-08-21 Maschf Augsburg Nuernberg Ag Control and conveying device operated with compressed air
US3721091A (en) * 1971-04-23 1973-03-20 Tokyu Car Corp Impact hydraulic forming device
FR2333944A1 (en) * 1975-12-01 1977-07-01 Ecole Nale Sup Arts Metiers Solar energy powered engine - has reciprocating piston with grooves in stem acting as valve element in sleeve
DE3228109A1 (en) 1982-07-28 1984-02-02 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Linear drive for producing impulse-like rapid percussive motions
US4780065A (en) * 1987-09-25 1988-10-25 William Sayers Cylinder pump having an air sensor activated reversing valve
AT404291B (en) * 1996-07-10 1998-10-27 Hygrama Ag OSCILLATION VALVE
DE102012008902A1 (en) * 2012-05-08 2013-11-14 Tox Pressotechnik Gmbh & Co. Kg Hydropneumatic device for pressure transmission and riveting device

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Publication number Publication date
EP3663577A1 (en) 2020-06-10

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