EP0011339B1 - Steuervorrichtung für Verdrängungspumpen - Google Patents

Steuervorrichtung für Verdrängungspumpen Download PDF

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Publication number
EP0011339B1
EP0011339B1 EP79200655A EP79200655A EP0011339B1 EP 0011339 B1 EP0011339 B1 EP 0011339B1 EP 79200655 A EP79200655 A EP 79200655A EP 79200655 A EP79200655 A EP 79200655A EP 0011339 B1 EP0011339 B1 EP 0011339B1
Authority
EP
European Patent Office
Prior art keywords
relay
contact
contactor
pump body
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79200655A
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English (en)
French (fr)
Other versions
EP0011339A3 (en
EP0011339A2 (de
Inventor
Jean Massaux
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Individual
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Individual
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Filing date
Publication date
Priority claimed from BE191850A external-priority patent/BE872167A/xx
Application filed by Individual filed Critical Individual
Priority to AT79200655T priority Critical patent/ATE3912T1/de
Publication of EP0011339A2 publication Critical patent/EP0011339A2/de
Publication of EP0011339A3 publication Critical patent/EP0011339A3/fr
Application granted granted Critical
Publication of EP0011339B1 publication Critical patent/EP0011339B1/de
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped

Definitions

  • the subject of the present invention is a device for regulating the flow rate of a pneumatic pump without a membrane, consisting of a pump body, inlet solenoid valves respectively for discharging a gas under pressure in the pump body, filling valves respectively for discharging liquid pumped into, respectively out of the pump body, an upper detector of the highest level of the liquid in the pump body, a lower detector of the lowest level of the liquid in the pump body and an intermediate detector of an intermediate level of the liquid in the pump body, said device comprising means for electrically controlling the opening, respectively the closing of the inlet valves, respectively of discharge pressurized gas under the influence of the upper level detector and the lower level detector, as well as means ensuring the closure of the pressure gas discharge valve under the influence of d intermediate level sensor when filling the pump body.
  • This type of pump can, in fact, a priori, be controlled in two ways: either by subjecting the admission and evacuation of gases under pressure, at the level of the liquid in the body of the pump, or by regulating the relative duration of the inlet and outlet times for gases under pressure.
  • a pneumatic pump with constant volume and double body comprising two float pump bodies each provided with gas inlet and outlet valves, valves for filling and discharging pumped liquid, two extreme level detectors and an intermediate level detector.
  • This pump aims above all to remedy the pressure interruptions during the supply of filter presses.
  • a locking device comprising a three-position switch connected to the two extreme level detectors of one of the pump bodies and to the intermediate level detector of the other pump body, ensures that neither the floats , nor the regulating devices are simultaneously in neutral, so as not to interrupt the supply pressure of the filter press.
  • the intermediate level detector is connected to a timing device. This device ensures that the evacuation time of one pump body does not start until the other pump body is partially filled.
  • the present invention aims to avoid the drawbacks described above and relates to a device for regulating the flow rate of a positive displacement pump.
  • the regulation device essentially comprises a timing device not synchronized by the signals of the level detectors and acting on the control means of the gas evacuation solenoid valve, so as to cause, during filling. , the closing of this discharge valve during a stopping time, so that the total duration of the operating cycle of the pump, including the time of filling with liquid, the time of delivery of the latter and said temporary stop time of the pump, ie constant and equal to a value determined by the setting of the timing device.
  • said devices for controlling the opening of the inlet and outlet valves of the pressurized gas consist of the coils of electromagnetic valves.
  • this magnetic float is preferably arranged to slide on a central hollow rod, made of non-ferromagnetic material, in which said magnetic contactors / switches are housed.
  • Said hollow rod can, very advantageously, be provided at its lower part with a deflector, in order to regulate the movement of the float by acting on the fluid filling current in the body of the pump.
  • This magnet 14 has the effect of engaging the mini-contactors 11, 12, 13.
  • mini-contactors are normally open and close under the action of the magnetic field of the permanent magnet 14.
  • the assembly can, in addition, include a device for signaling the start of operation of the pump, such as a lamp 18, which lights up when the switch 17 is closed.
  • a device for signaling the start of operation of the pump such as a lamp 18, which lights up when the switch 17 is closed.
  • FIG. 2 represents the electrical diagram in the rest position: the contacts 110, 120 and 130 of the magnetic mini-contactors 11, 12 and 13 are normally open.
  • the normally closed contacts 101, 101 ', 201, 301 and 401 of the relays 10, 20, 30 and 40 are also shown in the rest position.
  • Contacts 102, 102 ', 202, 202' and 302 are normally open.
  • the coil 400 opens the electromagnetic valve 4 for evacuating pressurized gas.
  • This discharge valve 4 is normally closed in the rest position.
  • the flashing relay 40 is activated and the lamp 18 signaling that the pump has started operating lights up.
  • the electromagnetic inlet valve 3 of the compressed air remains closed, the relay 10 capable of being contacted by the contact 110 of the upper magnetic contactor 11 being in fact de-energized and thereby leaving the coil 400 of the valve 4 energized by the normally closed contact 101 of relay 10.
  • the pump body 2 is therefore filled via the suction valve 6.
  • the magnetic contactor-switch 120 closes temporarily and thus connects the relay 20 to the voltage source.
  • the orders given by the relay 20 are the opening of the switch 201 and the closing of the switches 202 and 202 '.
  • the inlet 3 and outlet 4 valves remain closed and open respectively.
  • the passage of the float 9 in front of the intermediate detector .13 causes the temporary closure of the magnetic contactor / switch 130, the relay 30 is energized and commands the closing of the normally open contact 302 and the opening of the normally closed contact 301 of the relay 30, which causes the evacuation valve 4 to close, the intake valve 3 remaining closed.
  • the setting of the flashing relay 40 makes it possible to determine the complete duration of a pumping cycle.
  • the counting of the predetermined time begins.
  • the lighting of the signal lamp 19 therefore corresponds to the simultaneous closing time of the two valves.
  • This closing time in fact constitutes the margin between the total time of the volumetrically adjusted cycle (set time of the flashing relay) and the time necessary for a complete filling and delivery cycle of the pump, without interruption, to take place.
  • the float When the float reaches the upper level, in the pump body, it closes the magnetic contactor 11. This results in the supply of the relay 10, with closing of the closed contacts under voltage 102 and 102 '(and their maintenance ), which results in the opening of the intake valve 3 (the coil 300 being supplied) and the closing of the discharge valve 4 (by opening the normally closed contacts 101 and 101 ').
  • the compressed air available at sufficient pressure and flow rate, discharges the liquid contained in the body 2 of the pump.
  • the float goes down at the same time as the level of the liquid in the pump.
  • the magnetic mini-contactor placed at this location reverses the process, by switching on (and maintaining) the relay 20 and releasing the relay 10.
  • the drain valve 4 s' opens (the coil 400 being supplied by the normally closed contacts 101 and 301) and the inlet valve 3 closes (by opening the contacts 102 and 102 'closed under voltage).
  • the flow rate ensured by this regulating device is maximum and exclusively a function of the dimensioning of the pump and the conditions of filling and delivery (pressure losses, density of the pumped liquid, head, etc.).
  • the regulating device shown diagrammatically in FIG. 2 allows flow regulation (volumetric regulation) of the operation of pneumatic pumps without a membrane as shown in FIG. 1.
  • volumetric regulation of the device according to this embodiment of the invention will therefore be maintained as long as the filling and delivery conditions are such that they allow a flow rate greater than the set flow rate.
  • An alarm can be incorporated in the assembly to signal the case where the real time of the normal filling and delivery cycle of the pump comes to exceed the set time of the flashing relay.
  • FIG. 2 is designed for a time delay for the duration of the opening of the evacuation valve 4 for pressurized gas (filling of the pump), it is obvious that similar operation can be obtained by a time delay for the opening of the pressure gas inlet valve (pump discharge).
  • the contactors 110, 120 and 130 can be contactors of any type belonging to or influenced by any detectors of the level of fluid in the body of the pump, instead of magnetic contactors as indicated for the embodiments of the invention specifically described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Claims (6)

1. Vorrichtung zur Steuerung der Durchflussleistung einer membranlosen penumatischen Pumpe, bestehend aus einem Pumpenkörper (2), einem Einlass- (3) bzw. Ablass- (4)-Magnet-Ventil für ein unter Druck stehendes Gas in den bzw. aus dem Pumpenkörper (2), einer Füllklappe (6) und einer Ablassklappe (7) für die in den bzw. aus dem Pumpenkörper zu befördernde Flüssigkeit, einem oberen Niveaufühler (11) für das Abfühlen des höchsten Pegelstandes und einem unteren Niveaufühler (12) für das Abfühlen des untersten Pegelstandes der Flüssigkeit in dem Pumpenkörper (2), sowie einem mittleren Niveaufühler (13) für das Feststellen eines mittleren Pegelstandes der Flüssigkeit in dem Pumpenkörper (2), begreifend Elektroschaltmittel (Figur 2) für das durch den oberen (11) bzw. unteren (12) Niveaufühler gesteuerte Öffnen bzw. Schliessen des Einlass- (3) bzw. Ablass- (4)-Magnetventils für das unter Druck stehende Gas, sowie Mittel für eine durch den mittleren Niveaufühler gesteuerte Schliessung des Ablassventils für das unter Druck stehende Gas während des Füllens des Pumpenkörpers, dadurch gekennzeichnet, dass dieselbe eine nicht durch die Impulse der Niveaufühler synchronisierte Zeitschaltung (40) begreift, welche derart auf die Schaltung des Ablassventils (4) für das Gas einwirkt, dass dieses Ablassventil (4) während des Füllens für eine gewisse Haltezeit geschlossen gehalten wird und die globale Arbeitszyklusdauer der Pumpe, bestehend aus der Füllzeit der Flüssigkeit, der Ausstosszeit derselben und der besagten vorübergehenden Haltezeit, konstant ist und einem mit Hilfe der Zeitschaltung (40) einstellbaren Sollwert entspricht.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die drei Niveaufühler (11, 12, 13) als durch einen an einem Führungselement (8) gleitenden magnetischen Schwimmer (9) betätigbare magnetische Einschalter/Aussschalter (110, 120, 130) ausgebildet sind.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die besagten Elektroschaltmittel (Figur 2) folgende Elemente begreifen :
- ein erstes Schaltrelais (10) mit Kontakten (101, 101', 102, 102'), welches durch einen dem Niveaufühler (11) des oberen Pegelstandes der Flüssigkeit im Pumpenkörper (2) zugehörigen oder durch diesen gesteuerten ersten Einschalter (110) betätigt wird, wobei das erste Relais und der erste Einschalter in Reihenschaltung montiert sind ;
- ein zweites Schaltrelais (20) mit Kontakten (201, 202, 202'), welches durch einen dem Niveaufühler (12) des unteren Pegelstandes der Flüssigkeit im Pumpenkörper zugehörigen oder durch diesen gesteuerten zweiten Einschalter (120) betätigt wird, wobei das zweite Relais und der zweite Einschalter ebenfalls in Reihenschaltung montiert sind ;
- ein drittes Schaltrelais (30), welches durch einen dem Niveaufühler (13) für einen zwischen dem oberen und dem unteren Pegelstand liegenden mittleren Pegelstand zugehörigen oder durch diesen gesteuerten dritten Einschalter (130) betätigt wird und ebenfalls mit diesem dritten Einschalter in Reihenschaltung montiert ist ;

und besagte Elemente wie folgt untereinander verbunden sind :
der erste normal geschlossene Kontakt (101) des ersten Relais (10) ist, in Reihenschaltung mit dem normal geschlossenen Kontakt (301) des dritten Relais (30), mit dem das Öffnen des oder der Ablassventile für das unter Druck stehende Gas bewirkenden Steuerschalter (400) verbunden und der zweite normal geschlossene Kontakt (101') ist, in Reihenschaltung mit dem unter Spannung geschlossenen Kontakt (202) des zweiten Relais (20), mit diesem zweiten Relais (20) verbunden und die Reihenschaltung zwischen dem normal geschlossenen Kontakt (101') des ersten Relais (10) und dem unter Spannung geschlossenen Kontakt (202) des zweiten Relais (20) ist parallel mit dem zweiten Einschalter (120) geschaltet;
der dritte, unter Spannung geschlossene Kontakt (102) des ersten Relais (10) ist mit dem das Öffnen des oder der Einlassventile (3) für das unter Druck stehende Gas bewirkenden Steuerschalter (300) verbunden und der unter Spannung geschlossene vierte Kontakt (102') ist in Reihenschaltung mit dem normal geschlossenen Kontakt (201) des zweiten Relais (20) und mit dem ersten Relais (10) verbunden und die Reihenschaltung zwischen dem normal geschlossenen Konatkt (201) des zweiten Relais und dem unter Spannung geschlossenen vierten Kontakt (102') des ersten Relais ist parallel mit dem ersten Einschalter (110) geschaltet;
der unter Spannung geschlossene Kontakt (302) des dritten Relais (30) ist, in Reihenschaltung mit dem zweiten unter Spannung geschlossenen Kontakt (202') des zweiten Relais (20), mit dem dritten Relais (30) verbunden und der unter Spannung geschlossene Kontakt (302) des dritten Relais (30) parallel mit dem dritten Einschalter (130) geschaltet;
der normal geschlossene Kontakt (401) des Blinkrelais (40) ist in Reihenschaltung, einerseits mit der den zweiten Einschalter (120) begreifenden Parallelschaltung und der Reihenschaltung des zweiten Kontakts (101') des ersten Relais (10) und des unter Spannung geschlossenen ersten Kontakts (202) des zweiten Relais (20) und andererseits mit dem zweiten Relais (20) verbunden.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die das Öffnen des Einlass-(3) und Ablass- (4)-Ventils für das unter Druck stehende Gas bewirkenden Steuerschalter durch die Spulen der elektromagnetischen Ventile (300, 400) gebildet werden.
5. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der magnetische Schwimmer (9) auf einem zentralen Hohlschaft (8) aus einem nicht ferromagnetischen Material, im welchem die magnetischen Einschalter/Ausschalter (110, 120, 130) untergebracht sind, gleitet.
6. Pneumatische Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Hohlschaft (8) an seinem unteren Ende eine auf den Füllstrom der in den Pumpenkörper (2) eintretenden Flüssigkeit wirkende Ablenkplatte (15) trägt.
EP79200655A 1978-11-21 1979-11-08 Steuervorrichtung für Verdrängungspumpen Expired EP0011339B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79200655T ATE3912T1 (de) 1978-11-21 1979-11-08 Steuervorrichtung fuer verdraengungspumpen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE191850A BE872167A (fr) 1978-11-21 1978-11-21 Pompe regulante a liquides charges ou non.
BE191850 1978-11-21

Publications (3)

Publication Number Publication Date
EP0011339A2 EP0011339A2 (de) 1980-05-28
EP0011339A3 EP0011339A3 (en) 1980-11-12
EP0011339B1 true EP0011339B1 (de) 1983-06-22

Family

ID=3843165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200655A Expired EP0011339B1 (de) 1978-11-21 1979-11-08 Steuervorrichtung für Verdrängungspumpen

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US (1) US4439110A (de)
EP (1) EP0011339B1 (de)
AT (1) ATE3912T1 (de)
DE (1) DE2965758D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653989A (en) * 1985-11-18 1987-03-31 Poly Oil Pump, Inc. Oil well pumping mechanism
DE3635539A1 (de) * 1986-10-18 1988-04-28 Laempe Joachim Dosiervorrichtung fuer bindemittel
US5046925A (en) * 1989-12-19 1991-09-10 Air Products And Chemicals, Inc. Gas piston liquid flow controller
US5141404A (en) * 1990-06-25 1992-08-25 Q.E.D. Environmental Systems, Inc. Pump apparatus
US5186611A (en) * 1990-07-20 1993-02-16 Frandsen Aksel S Pump arrangement for pumping liquid by means of compressed air
AU4772493A (en) * 1992-07-15 1994-02-14 United States Of America, Represented By The Secretary, Department Of Health And Human Services, The Sulfo-derivatives of adenosine
US5390636A (en) * 1994-02-14 1995-02-21 Wynn Oil Company Coolant transfer apparatus and method, for engine/radiator cooling system
US5664699A (en) * 1995-04-04 1997-09-09 Simpson Technologies Corporation Core sand preparation apparatus
AU4436699A (en) 1998-06-11 1999-12-30 John E. Marvel Fluid well pump
WO2003062583A2 (en) 2002-01-21 2003-07-31 Airlift Systems International, Inc. Fluid well pumping system
DE10240804B4 (de) * 2002-08-30 2012-04-19 Oase Gmbh Schlammsauger

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US1056709A (en) * 1912-01-12 1913-03-18 Henry J Pollacek Pump.
US2982467A (en) * 1956-03-06 1961-05-02 Ingersoll Rand Co Compressor control system
US3556682A (en) * 1968-08-12 1971-01-19 Hitachi Ltd Apparatus for liquid displacement transfer
AT310699B (de) * 1970-11-28 1973-10-10 Apaw Sa Niveauschalter
US3907462A (en) * 1972-11-01 1975-09-23 Worthington Pump Int Hydraulic displacement type pumping system
DE2309790A1 (de) * 1973-02-27 1974-08-29 Goetzelmann Ind Abwasser Einrichtung zum messen eines fluessigkeitsniveaus
DE2345413A1 (de) * 1973-09-08 1975-03-20 Otto Tuchenhagen Vorrichtung zum pumpen hauptsaechlich von dickstoff
JPS5340797B2 (de) * 1974-11-25 1978-10-28
US3991825A (en) * 1976-02-04 1976-11-16 Morgan Thomas H Secondary recovery system utilizing free plunger air lift system
FR2342483A2 (fr) * 1976-02-27 1977-09-23 Kuebler Impulsgeraete Capteur pour un palpeur de chemin
DE2702736A1 (de) * 1977-01-24 1978-07-27 B W Controls Inc Niveaufuehler fuer fluessigkeiten

Also Published As

Publication number Publication date
EP0011339A3 (en) 1980-11-12
EP0011339A2 (de) 1980-05-28
US4439110A (en) 1984-03-27
ATE3912T1 (de) 1983-07-15
DE2965758D1 (en) 1983-07-28

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