EP0861980A2 - Fluidic pump making use of hydrodynamic supply and charging - Google Patents

Abstract

The pump has a feed and simultaneous conveyor conduit (5), a hydrodynamic fluid media flow control unit (6) for control of the fluid medium in the required direction during the pump phases of "suction" and "delivery". A conveyor conduit (7) is provided to the fluid media forward flow point. A fluid medium feed container (8) ensures that the fluid level to be maintained in it causes the funnel connection of the fluid media flow control unit (6) remains hermetically closed. A combination device can be used for handling solid matter by means of fluid media using the hydrodynamic pump, avoiding the employment of cut-offs and other valves and taps affecting the fluid media flow.

Description

Field of the Invention

The invention relates to a pump for conveying liquid media, which are possibly heavily contaminated with solids, according to the principle of the valve-less hydrodynamic supply and discharge of the liquid media to be conveyed, to and from the pump body and specific application devices of the pump.
In order to ensure a continuous pump delivery, at least two pump units are connected simultaneously, which alternately function. In specific cases, for example in the liquid media circuit, the inventive pump is of preferred advantage.

State of the art

No adequate state of the art is known on the hydrodynamic principle of pumps. The problem lies in special areas of application, for example are liquid media loaded with abrasive substances, in the area of Valve function and general material wear. As a pump body are those of Suitable for double membrane types. Apart from the need for improvement The valve problem is not solved here either, the lifetime of the membrane material. The same applies to progressing cavity pumps. Although these are suitable for conveying Excellent thick matter. However, as soon as to promote solid-laden liquid media the hard rubber stator is used disproportionately quickly In the practice of the metal industry, when finishing raw cast parts or pickling of oxidation layers, the pump problem has so far been a permanent problem.

Description of the invention

1) einem Gasverdrängungsbehälter 1, mit den Flüssigkeitsfüllstandssensoren 10 und 11, dem Gaszuleitstutzen 3 dem Gasableitstutzen 4 und dem Anschluss für eine Flüssigmedien-Speise/Förderleitung,

2) einer Speise- und gleichzeitig Förderleitung 5, einem hydrodynamischen Flüssigmedienströmungssteuerungsaggregat 6, für die Steuerung des Flüssigmediums in die jeweils gewünschte Richtung, während der Pumpphasen des

Saugens" und des Förderns",

3) einer Förderleitung 7, sowie

4) einem Speisebehälter 8, der Quelle für die Speisung von Behälter 1 ist und gleichzeitig über das in Behälter 8 aufrechterhaltene Flüssigkeitsniveau bewirkt, dass der Trichterstutzen 22 des Aggregats 6 hermetisch abgeschlossen ist.

The object of the invention was to provide a pump with the associated hydrodynamic guide units, which overcomes the disadvantages of the prior art, or which only produces an advanced state of the art. Furthermore, an application-specific device, using the new pump,
This object was achieved according to the invention by a pump unit with the designation, hydrodynamic pump P, consisting of;

1) a gas displacement container 1, with the liquid level sensors 10 and 11, the gas supply connection 3, the gas discharge connection 4 and the connection for a liquid media feed / delivery line,

2) a feed and at the same time delivery line 5, a hydrodynamic liquid media flow control unit 6, for controlling the liquid medium in the desired direction during the pumping phases of the

Sucking "and the Funding ",

3) a delivery line 7, as well

4) a feed container 8, which is the source for feeding container 1 and at the same time, via the liquid level maintained in container 8, causes the funnel connection 22 of the unit 6 to be hermetically sealed.

Figur 1

als Gesamtkonzept dargestellt, sowie der

Figur 2

die das Aggregat 6 der hydrodynamischen Flüssigmedienströmungsführung für die Funktionen Saugen" und Pumpen" zeigt.

This part of the task solution is schematically based on the

Figure 1

presented as an overall concept, as well as the

Figure 2

which the unit 6 of the hydrodynamic liquid media flow guide for the functions Suck "and Pumps "shows.

The concept of Figures 1 and 2 shows the solution to the problem of the invention when the Liquid delivery is discontinuous. In that case, the liquid medium will drain the supply source is sucked via line 5 into the gas displacement container 1 and after filling it with a gas, for example nitrogen or air, over the same line 5, the hydrodynamic liquid flow control 6 and the delivery line 7 pressed into a flow container 13. By repeating this Procedure, a batch-wise, discontinuous pump delivery takes place.

In order to ensure continuous pumping of the liquid media, it was also an object of the invention to further develop the hydrodynamic flow control so that at least two pump unit units can alternately function.
The object was achieved by means of an assembly 17 for the hydrodynamic direction of the flow direction of at least two liquid flows. The liquid flows coming from the delivery lines 7 are alternately directed by means of the unit 17 into a central delivery line 18, from which the delivery liquid flows into a flow container.

As a consequence, a continuously operating pump unit must include at least two single pump units P and one unit 17 for conducting the Liquid flows coming from the delivery lines 7 into a central one Delivery line 18, as in FIG. 3.

The original task was the surface treatment of metals that are produced in the casting process or in other thermal processes. The surface treatment is often carried out in wet processes by so-called pickling or finishing. The treatment liquids are often alkaline and therefore chemically aggressive, or they contain abrasive solids. For practical reasons, it is therefore desirable for the treatment liquids to get from the pump unit into the treatment tank by the shortest route. If possible without having to pass valve shut-offs or other wear-sensitive fittings. The aim was a device that forms a unit with the pump.
According to the invention, this specialized device for the surface treatment of metal bodies could be provided using the new pump unit in such a way that the pump unit and the treatment device form a unit. The object was thus achieved by a device A according to the invention for the surface treatment of metal bodies B, by means of liquid media C, in the immersion process of the bodies to be treated, according to the liquid media circuit principle, using hydrodynamic pumps P and valveless liquid flow guidance by means of the hydrodynamic liquid media control and conducting principle with the help of the control units 6 and the directing units 17, the treatment device and the pump unit forming a unit.

The application of hydrodynamic fluid flow control and Conducting has an essential part in the realization of the subject matter of the invention. It is based on the Le Chatelier-Braun principle of priority of the least Resistance or the lowest energy requirement. The technical use according to the present invention was not obvious to a person skilled in the art, rather unlikely. It is all the more surprising that the principle according to the invention is working. This is intended to be closer to the two items of liquid flow control here by means of unit 6 and the liquid flow direction by means of Unit 17, with Figures 2 to 2f and 3 and 4, are explained.

Liquid flow control

The lack of valves in the pump requires a specific liquid suction and delivery system. This could be developed with the unit 6 of the hydrodynamic flow control in connection with a food container 8.
During the pressure phase of the pumping function of the pump, the liquid medium, despite the open pipe bridge R, runs between the delivery lines 5 and 7 through the feed container 8 filled with liquid medium, without the conveyed liquid escaping into the feed container.
It is a condition that corresponding geometrical constructions of the units 6, which bridge the bridge R without wires, are designed in the direction of the feed container 8 such that a higher pressure energy expenditure is required for a change in direction of the liquid flow than for the desired direction of flow of the liquid. In the exemplary practice according to FIG. 2, the funnel-shaped design of the lower connecting piece 16 of the delivery line 7 would have to reverse the flow of the liquid media flow. The energy expenditure is extremely high in such a case, since the existing flow rate would have to be slowed down to almost zero. Consequently, the liquid media flow looks for the easier path in terms of energy, namely in the direction of the delivery line 7, towards the flow container or the delivery line end connector of the line 7 in the direction of which the liquid only has to overcome the energy of the gravitational counterpressure. The hydrodynamic principle expressly does not work on the principle of jet pumps. Therefore, the liquid level in the feed tank 8 remains unchanged during the pumping phase. It is expedient that the liquid level of the feed container 8 remains above the lower end of the connector 17 during the pumping phase in order to maintain the hermetic seal. Exemplary further constructions of the unit 6 are shown in FIGS. 2a to 2f and 10.

Liquid flow direction

In the continuous operation of the inventive pump, it is necessary that at least two pump units, switched simultaneously, function alternately to create a continuous stream of liquid media. The alternate The generated liquid media flow is at least one according to the invention two inlet nozzle 19 possessing unit 17, for directing liquid media in a central delivery line 18 conducts from where the pumped liquid, as in Case of the single pump, gets into the outlet or the pre-discharge tank.

The hydrodynamic operating principle of the unit 17 is based on the specific geometric construction of the aggregate that causes the Flow of the liquid medium coming from one of the inlet connections 19 in the direction is directed to the central conveyor. The geometric construction of the Unit 17 is designed so that the flow of liquid flow in the direction of the central Delivery line 18 is energetically preferred. So that is also key in this the installation of valves is not necessary and the entire system therefore works The obtuse-angled radii R and Ri support the preferred unit construction ction.

Combination device for treating metal bodies using the described hydrodynamic pump

In the area of the final or intermediate treatment of raw castings, raw steel bodies or the like, using liquid media, it is a great advantage if treatment tanks, pumps and pipelines can be kept as compact as possible, as this reduces repair work and material wear and energy costs can be reduced.
Since the treatment system is operated without pressure or only under low pressure of the freely flowing treatment media, the use of the inventive hydrodynamic pump system is virtually predestined. In other cases, when working with higher pump pressures, the pressure of the liquid entering the treatment tank would have to be throttled, which would require another undesirable valve. The combination device works on the so-called overflow principle. This means that the body to be treated is immersed in a treatment container 2 in which it is subjected to the action of the treatment medium. The treatment medium then flows into an overflow basin 8, which can also serve as a pump feed container 8. This embodiment is shown in a simplified, schematic, basic embodiment in FIG. 5. FIG. 7 shows an exemplary variant of the device, three hydrodynamic pump units being used. In such a case, the phase sequence of the functioning of the pump units is detected by means of sensor scanning of the filling level of the gas displacement container, and the gas supply nozzle 3 and gas discharge nozzle 4 are opened or closed accordingly by means of pneumatic control, as is shown with the circuit diagram in FIG. The figures show the compactness of the device in the combination of the pump units P and the treatment unit A for treating the body to be treated.

Functional description of a hydrodynamic pump unit

The operation of the hydrodynamic pump according to FIG. 1 is described as an example. The feed container 8 is filled with the liquid to be used when the valve of the gas discharge nozzle 4 is open until the sensor 10 of the gas displacement container 1 is at fully "comes into operation and the valve of the connection piece 4 closes and, moreover, the filling mark of the food container 8 is reached above the end of connection piece 16 of the unit 6. The valve of the gas inlet connection piece 3 is now opened and air is pressed into container 1. Via the line 5 and the hydrodynamic flow control 6, the liquid medium is pumped via the delivery line 7 into the flow container 13 until the level sensor 11 reaches the mark empty "is reached. This completes one pump cycle. The next pump cycle takes place according to the same pattern.
In the circulatory mode, when the flow tank is an overflow tank with liquid return in tank 8, no further liquid is fed to the circulatory system. Otherwise the food container must always be refilled.
This shows the preferred use of the hydrodynamic pump for recycling cycles in general and for recycling cycles after Liquid overflow principle "in particular, as is used in the combination device described above.

Examples

Fig.1

das Basismodel der hydrodynamischen Flüssigmedienpumpe P gemäss dem Funktionsprinzip, mit dem Gasverdrängungsbehälter 1 mit Gaszuleitstutzen 3 und Gasableitstutzen 4,der Flüssigmedienspeise- und gleichzeitig Förderleitung 5, dem Aggregat der hydrodynamischen Strömungssteuerung 6 des Flüssigmediums, dem Pumpenspeisebehälter 8, der Förderleitung 7 und dem Vorlaufbehälter 13, deren Funktionsprinzip im Detail beschrieben wurde.

Fig.1a

den Gasverdrängunsbehälter mit den Flüssigkeitsfüllstandssensoren 10 und 11, 10 für den Füllstand voll" , 11 für den Füllstand leer", einem Schwimmer 15 oder einer anderen Einrichtung, mittels der ein Impuls an die Sensoren abgegeben wird, beim Passieren derselben, den Gaszuleit- 3 und Ableitstutzen 4, den Regelungseinrichtungen gemäss Fig. 8, für die Gaseinleitung in Gasverdrängungsbehälter 1 sowie für die Gasableitung aus Behälter 1, sowie gegebenenfalls einem Abflusstrichter mit Bodenverschluss , für Anwendungsfälle bei Flüssigmedien, die stark mit Feststoffen, zum Beispiel Quarzsand beladen sind.

Fig.1b

einen Längsschnitt Variante von Gasverdrängungsbehälter 1 in möglicher vereinfachter Bauweise, ohne abmontierbarem Boden und Deckel, mit einem Einlaufschild 14 zur Verhinderung von Gasblasenbildung, den Sensoren 10 und 11, dem Gasableitstutzen 4 mit Gasableitventil und Gaszuleitstutzen 3 mit Gaszuleitventil mit Geräuschdämpfer.

Fig.2

einen Längsschnitt des hydrodynamischen Flüssigmedienströmungsaggregats 6, in der Kombination von Endstutzen 21 der Förderleitung 5 mit dem Trichterstutzen 22 der Förderleitung 7. In Abhängigkeit von der Viskosität der zu fördernden Flüssigkeit und bedingt, durch den auf den Verdrängungsbehälter 1 einwirkenden Gasdruck erzeugten Strömungsgeschwindigkeit des Flüssigmediums, kann die Distanz S , der Eindringtiefe von Stutzen 21 in den Trichterstutzen 22 variiert werden. Dadurch wird die Durchmesserquerschnittsfläche X, bei konstantem Winkel β3, kleiner oder grösser und dementsprechend der Flüssigkeitsströmungsrückstau grösser oder kleiner. Insofern ist die Strömungsrichtung des Flüssigmediums in Richtung der Förderleitung 7 beeinflussbar.

Fig. 2a bis 2d

mögliche Varianten der Längs- und Querschnitte des hydrodynamischen Flüssigmedienströmungsaggregats 6. Allen gemeinsam ist das Strömungsbevorzugungsprinzip in Richtung der Förderleitung 7. In der Regel besitzt die Zulaufleitung den gleichen Durchmesser wie die Ablaufleitung.Bei entsprechend schikanöser Rückstaukonstruktion zum Speisebehälter hin, kann der Durchmesser der Ablaufleitung auch grösser als der der Zulaufleitung sein.

Fig.2e bis 2f

Längsschnitte weiterer möglicher Varianten des Aggregats 6 mit geschlossenem, brückenlosen Förderleitungssystem der Förderleitungen 5 und 7 jedoch mit angesetzen Flüssigmedienspeisestutzen 22, mit bevorzugter Winkelstellung β1 und β2 der Stutzen.

Fig.3

ein Aggregat 17 zur hydrodynamischen Flüssigkeitsströmungsrdirigierung im Längsschnitt mit den unteren Zulaufstutzen 19 und der zentralen Förderleitung 18. Die gezeigten gestrichelten Pfeile zeigen in der geometrischen Konstruktionsanordnung die energetisch benachteiligten Strömungsrichtungen eines Flüssigmediums, während der gestrichene, achsiale Pfeil die bevorzugte, dirigierte Strömungsrichtung zeigt. Einflussgebende Faktoren zur bevorzugten Strömungsdirigierung sind die Durchmesser der Leitungen d1, d2 und d3, sowie der Spreitzwinkel β und die Distanz N der Radien von d1 und2. Die geometrische Konstellation der genannten Faktoren ist weitgehend variabel und ist den Verhältnissen der eingehenden Förderleitungen zu den Zulaufstutzen 19 anpassbar. Oberstes Kriterium ist jeweils, dass die Strömungsrichtung in Richtung der zentralen Förderleitung 18 bevorzugt bleibt. Spreitzwinkel β ist bevorzugt spitzwinklig und liegt im Bereich von 10^o bis 90^o,vorzugsweise von 20^o bis 70^o.d1 und d2 sind je gleich oder kleiner als d3, wobei d1 und d2 unlimitiert sind.

Fig.4

Konstruktionsvarianten der hydrodynamischen Flüssigkeitsströmunsdirigierungen 17 mit zwei Zulaufstutzen T, drei Zulaufstutzen M und vier Zulaufstutzen 0.

Fig.5

ein Allgemeinschema einer Kombinationsvorrichtung zur Behandlung von Festkörpern mit Einbindung der hydrodynamischen Pumpe. Die Vorrichtung zeigt auf einfachste Weise die vorteilhafte Anwendungsmöglichkeit der neuen Pumpe, die sich praktisch in der Vorrichtung befindet. In diesem Falle handelt es sich um eine Pumpe nach der Batch- Arbeitsweise. Dies ist möglich wenn die zu behandelnden Festkörper einige Einwirkungszeit benötigen. Im Detail zeigt Fig.5 das Schema; Pumpe P, Behandlungsbehälter 2, Überlauf- und Pumpenspeisebehälter 8 ,mit den entsprechenden Speise und Förderleitungen, sowie den sich im Behandlungsbehälter befindenden zu bearbeitenden Körper B.

Fig.6

eine Kombinationsbehandlungsvorrichtung, wie in Fig.5, jedoch mit zwei hydrodynamischen Pumpeinheiten P . mit einem Überlauf-Festkörperbehandlungsbehälter 2, dem Überlaufbehälter 8, der gleichzeitig Pumpenspeisebehälter ist und einem Zweiweg-Strömungsdirigieraggregat 17. Diese Vorrichtung stellt im Gegensatz zur batchweisen Arbeitsweise, wie in Fig.5, eine Vorrichtung in kontinuierlicher und schneller Arbeitsweise dar.

Fig.7

eine Kombinationsvorrichtung mit drei hydrodynamischen Pumpeinheiten und einem Strömungsdirigieraggregat 17, die eine höhere Leistung bei kontinuierlicher Arbeitsweise gestattet. In Abhängigkeit von der Viskosität und des spezifischen Gewichts der Flüssigmedien verläuft die Entleerung der Gasverdrängungsbehälter nicht so schnell wie die Befüllung, es sei denn, die Entleerung erfolgt mit Hilfe von Vacuum.Um eine Taktgerechte Entleerungs und Befüllarbeitsweise zu gewährleisten erfolgt die taktgerechte Arbeitsweise der Vorrichtung im Dreipumpeneinheitsystem.

Fig.8

das Schaltschema der pneumatischen Steuerung des Taktablaufs beim Einsatz von drei hydrodynamischen Pumpeinheiten. Der Taktablauf einer Pumpeneinheit verläuft wie folgend;
Bei Gasverdrängungsbehälter 1 wird das Gasableitventil 9 des Stutzens 4 geöffnet. Behälter 1 ist leer, dementsprechend gibt Sensor 11 einen Impuls zum Elektromagneten, des Hilfsventils 40 zum öffnen des Hauptventils 9. Gleichzeizig wird das Gaszuleitventil 12 , mittels elektrischer Steuerung geschlossen. Das zu fördernde Flüssigmedium befüllt nun durch gravimetrisches Gefälle, über die Ansaugöffnung X von Aggregat 6 und Speiseleitung 5, den Behälter 1. Beim Erreichen der Marke voll" ,gibt Sensor 10 ,mittels elektrischer Übermittlung, einen Impuls über das Hilsventil 40 an das Ventil 9 zum Schliessen". Gleichzeitig wird mittels elektrischer Steuerung das Gaszuleitventil 12 pneumatisch geöffnet. Das nun in Behälter 1 einströmende Gas, in der Regel Pressluft, drückt nun das Flüssigmedium über Förderleitung 5, Flüssigmedienströmungssteuerung 6, und Förderleitung 7, Flüssigmedienströmungsdirigierung 17 und die zentrale Förderleitung 18 in ein Vorlaufgefäss. Erreicht der Schwimmer 15 mit dem sensorspezifischen Impulsgeber die Marke leer" des Behälters 1, tritt Sensor 11 in Funktion mit dem beschriebenen weiteren Regelungsablauf unter Einschaltung einer entsprechend programmierten Speicher-Programmier-Steuerung, die die weiteren Pumpeneinheiten taktgerecht in Funktion setzt mit Pumpablauf des nächsten und folgenden Behälters. Die Befüllungs- und Entleerungsprozedur der Behälter 1 ist derart geregelt, dass alle Behälter 1 gleichzeitig entleert werden können, jedoch die Flüssigkeitsververdrängungsprozedur mit jeweils nur einem Behälter 1 hintereinander erfolgt. Dies begünstigt die Pumpeneffektivität, da der Behälterentleerungszyklus in der Regel eine längere längere Zeit beansprucht als der Flüssigkeitsverdrängungszyklus des befüllten Behälters.
Die weiteren im Schema skizzierten Nummerierungen bedeuten;

42

Druckluftquelle, 43 Filter,

45

Druckminderer oder Proportionalventil zur automatischen Druckregelung,

46

Aufbereitungseinheit der Steuerungsdruckluft,

47

Vaccumanschluss oder Schalldämpfer.

Fig.9

eine Abwandlung der hydrodynamischen Pumpe P, mit Gasdruckverdrängungsbehälter1,einer anderen Variante der hydrodynamischen Flüssigmedienströmungssteuerung 26, mit geschlossener, geometrisch-konstruktiver Strömungsbevorzugungskonzeption, mit Speisebehälter 8 , Speise- und Förderleitung 28, Förderleitung 7 und Vorlaufbehälter 13.

Fig. 10

im Längsschnitt eine Variante der hydrodynamischen Flüssigmedienströmungssteuerung 26, mit Förder-Speiseleitungsteil 5, Förderleitungsteil 7 und dem Speiseleitungsstutzen 27. Winkel β5 ist spitzwinklig bis rechtwinklig, bevorzugt spitzwinklig. Die Durchmesser von Speiseleitungsstutzen 27, und Förderleitungen 5 und 7, sind bevorzugt gleich. Der Durchmesser von Förderleitung 7 kann jedoch auch grösser als der der anderen Leitungen sein, was jedoch einen Verlust an Flüssigkeitsströmungsgeschwindigkeit zur Folge hat. Auch bei dieser Variante des Teils der Flüssigkeitsströmungssteuerung gilt uneingeschränkt das Prinzip des kleinsten Zwanges.

Fig.11

eine Kombinationsvorrichtung entsprechend der von Fig. 6 unter Anwendung der Pumpenvariante gemäss Fig. 9. Die hydrodynamische Strömungsregulierung gemäss 17, kommt entsprechend zum Einsatz.

Fig. 12

eine Variante der hydrodynamischen Pumpe unter Anwendung eines dynamischen Ventils gemäss Fig. 13.

Fig. 13

ein Konzept eines dynamischen Ventils 27, wenn die hydrodynamische Pumpe mit höherem Leistung arbeiten soll. Zur Anwendung kommt gemäss diesem Konzept eine Pumpeneinheit mit einem zweiten Gasverdrängungsbehälter 1a. Der Förderstutzen 29 von Behälter 1a mündet in einen Trichterstutzen 30, der spitzwinklig in Förderleitung 5 mündet. In Funktion strömt aus Förderstutzen 29 ein Flüssigkeitsstrom mit einem solchen Druck, dass der dynamische Druck von Stutzen 29 im Gleichgewicht ist mit dem statischen Druck von Stutzen 31 ,Winkel β6 ist spitzwinklig, bevorzugt im Bereich von 5^o bis 45^o, Behälter 1a mit Ventil 27 ,wirkt dynamisch wie ein Absperrventil ist jedoch ohne mechanische Teile.

Fig.14

eine Kombinationsvorrichtung zum Behandeln von Festkörpern unter Anwendung eines dynamischen Ventils gemäss der Figuren 12 und 13.

Fig.15

eine Vorrichtung gemäss Fig.11 jedoch unter Anwendung von Dispersstoff-Aufwirbeldrehstäben 33. Bei Flüssigmedien mit einem hohen Anteil an Dispersstoffen ist der Wirbeleffekt, verursacht durch die Strömungsgeschwindigkeit der hydrodynamischen Pumpe, nicht stark genug um ein Absetzen der Dispersstoffe zu verhindern. Die Wirbeldrehstäbe treten impulsartig in Funktion.
Die Kegel 34 liegen nicht in der Kegelmulde 35 auf. Ein mechanischer Schleifeffekt wird dadurch vermieden. Die Anwendung der Aufwirbeldrehstäbe ist beschränkt auf Sondererfordernisse.

The invention is described by way of example by the following figures. The figures show;

Fig. 1

the basic model of the hydrodynamic liquid media pump P according to the functional principle, with the gas displacement container 1 with gas supply nozzle 3 and gas discharge nozzle 4, the liquid medium feed and delivery line 5, the aggregate of the hydrodynamic flow control 6 of the liquid medium, the pump feed tank 8, the delivery line 7 and the flow tank 13, whose operating principle has been described in detail.

Fig.1a

the gas displacement container with the liquid level sensors 10 and 11, 10 for the level full ", 11 for the level empty ", a float 15 or another device by means of which a pulse is emitted to the sensors, when passing through them, the gas inlet 3 and outlet nozzle 4, the control devices according to FIG. 8, for the gas introduction into the gas displacement container 1 and for the gas discharge from container 1, and optionally a drain funnel with bottom closure, for applications with liquid media which are heavily loaded with solids, for example quartz sand.

Fig.1b

a longitudinal section variant of gas displacement container 1 in a possible simplified design, without removable bottom and lid, with an inlet shield 14 to prevent gas bubbles, the sensors 10 and 11, the gas discharge pipe 4 with gas discharge valve and gas supply pipe 3 with gas supply valve with silencer.

Fig. 2

a longitudinal section of the hydrodynamic liquid media flow unit 6, in the combination of end nozzle 21 of the delivery line 5 with the funnel connection 22 of the delivery line 7. Depending on the viscosity of the liquid to be conveyed and due to the flow velocity of the liquid medium generated on the displacement container 1, gas pressure can be generated the distance S, the penetration depth of nozzle 21 in the funnel nozzle 22 can be varied. As a result, the diameter cross-sectional area X becomes smaller or larger at a constant angle β3, and accordingly the liquid flow backflow becomes larger or smaller. In this respect, the direction of flow of the liquid medium in the direction of the delivery line 7 can be influenced.

2a to 2d

Possible variants of the longitudinal and cross-sections of the hydrodynamic liquid media flow unit 6. Common to all is the flow preference principle in the direction of the delivery line 7. Generally, the inlet line has the same diameter as the outlet line. If the backwater construction is correspondingly difficult, the diameter of the outlet line can also be be larger than that of the inlet pipe.

Fig.2e to 2f

Longitudinal sections of further possible variants of the unit 6 with a closed, bridge-free delivery line system of the delivery lines 5 and 7, but with attached liquid media feed ports 22, with preferred angles β1 and β2 of the ports.

Fig. 3

a unit 17 for hydrodynamic fluid flow guidance in longitudinal section with the lower inlet connection 19 and the central delivery line 18. The dashed arrows shown in the geometric constructional arrangement show the energetically disadvantageous flow directions of a liquid medium, while the dashed, axial arrow shows the preferred directed direction of flow. Influencing factors for preferred flow direction are the diameter of the lines d1, d2 and d3, as well as the spreading angle β and the distance N of the radii of d1 and2. The geometric constellation of the factors mentioned is largely variable and can be adapted to the conditions of the incoming delivery lines to the inlet connection 19. The uppermost criterion is that the flow direction in the direction of the central delivery line 18 remains preferred. Spreading angle β is preferably acute and is in the range from 10 ^o to 90 ^o , preferably from 20 ^o to 70 ^o. D1 and d2 are each equal to or less than d3, d1 and d2 being unlimited.

Fig. 4

Design variants of the hydrodynamic liquid flow directors 17 with two inlet ports T, three inlet ports M and four inlet ports 0.

Fig. 5

a general scheme of a combination device for the treatment of solids with integration of the hydrodynamic pump. The device shows in the simplest way the advantageous application of the new pump, which is practically in the device. In this case it is a pump according to the batch mode of operation. This is possible if the solids to be treated require some exposure time. Fig. 5 shows the scheme in detail; Pump P, treatment tank 2, overflow and pump feed tank 8, with the corresponding feed and delivery lines, as well as the body B to be processed located in the treatment tank.

Fig. 6

a combination treatment device, as in Figure 5, but with two hydrodynamic pump units P. with an overflow solid-state treatment tank 2, the overflow tank 8, which is also a pump feed tank and a two-way flow directing unit 17. This device, in contrast to the batch mode, as in FIG. 5, represents a device in continuous and fast mode.

Fig. 7

a combination device with three hydrodynamic pump units and a flow directing unit 17, which allows a higher performance with continuous operation. Depending on the viscosity and the specific weight of the liquid media, the emptying of the gas displacement container does not proceed as quickly as the filling, unless the emptying is carried out with the help of Vacuum. In order to ensure that the emptying and filling procedure is carried out according to the clock, the device operates according to the clock Three-pump unit system.

Fig. 8

the circuit diagram of the pneumatic control of the cycle sequence when using three hydrodynamic pump units. The cycle sequence of a pump unit is as follows;
With gas displacement container 1, the gas discharge valve 9 of the connector 4 is opened. Container 1 is empty, accordingly sensor 11 gives a pulse to the electromagnet, the auxiliary valve 40 to open the main valve 9. At the same time, the gas supply valve 12 is closed by means of an electrical control. The liquid medium to be pumped now fills the container 1 through a gravimetric gradient, via the suction opening X of the unit 6 and feed line 5, when the mark is reached full ", gives sensor 10, by means of electrical transmission, a pulse via auxiliary valve 40 to valve 9 for At the same time, the gas supply valve 12 is opened pneumatically by means of electrical control. The gas now flowing into container 1, usually compressed air, now presses the liquid medium via delivery line 5, liquid medium flow control 6, and delivery line 7, liquid media flow direction 17 and the central delivery line 18 in the float 15 reaches the mark with the sensor-specific pulse generator empty "of the container 1, sensor 11 comes into operation with the further control sequence described, with the activation of a correspondingly programmed memory programming control, which puts the other pump units into operation with the pumping sequence of the next and subsequent containers. The filling and emptying procedure of the containers 1 is regulated in such a way that all containers 1 can be emptied at the same time, but the liquid displacement procedure is carried out in succession with only one container 1. This favors the pump effectiveness, since the container emptying cycle generally takes a longer time than the liquid displacement cycle of the filled container.
The other numberings outlined in the diagram mean;

42

Compressed air source, 43 filters,

45

Pressure reducer or proportional valve for automatic pressure control,

46

Conditioning unit for the control compressed air,

47

Vacuum connection or silencer.

Fig. 9

a modification of the hydrodynamic pump P, with gas pressure displacement container 1, another variant of the hydrodynamic liquid media flow control 26, with a closed, geometrical-constructive flow preference concept, with feed container 8, feed and delivery line 28, delivery line 7 and flow container 13.

Fig. 10

in longitudinal section a variant of the hydrodynamic liquid media flow control 26, with feed-feed line part 5, feed line part 7 and the feed line connector 27. Angle β5 is acute to rectangular, preferably acute. The diameters of feed line connecting piece 27 and delivery lines 5 and 7 are preferably the same. However, the diameter of the conveying line 7 can also be larger than that of the other lines, which, however, results in a loss of liquid flow rate. In this variant of the part of the liquid flow control, the principle of the smallest constraint applies without restriction.

Fig. 11

a combination device corresponding to that of FIG. 6 using the pump variant according to FIG. 9. The hydrodynamic flow regulation according to FIG. 17 is used accordingly.

Fig. 12

a variant of the hydrodynamic pump using a dynamic valve according to FIG. 13.

Fig. 13

a concept of a dynamic valve 27 if the hydrodynamic pump is to operate at a higher output. According to this concept, a pump unit with a second gas displacement container 1a is used. The delivery nozzle 29 from the container 1a opens into a funnel connection 30 which ends at an acute angle in the delivery line 5. In operation flows from feed nozzle 29, a liquid stream at such a pressure that the dynamic pressure of nozzle 29 in equilibrium β6 with the static pressure of nozzle 31, angle is an acute angle, preferably in the range 5 ^o to 45 ^o, the container 1a with valve 27, acts dynamically like a shut-off valve but without mechanical parts.

Fig. 14

a combination device for treating solids using a dynamic valve according to Figures 12 and 13.

Fig. 15

a device according to FIG. 11, however, using dispersant whirling torsion bars 33. In the case of liquid media with a high proportion of dispersants, the swirl effect, caused by the flow rate of the hydrodynamic pump, is not strong enough to prevent the dispersants from settling. The vortex torsion bars start to function in an impulse.
The cones 34 do not lie in the cone trough 35. This avoids a mechanical grinding effect. The application of the swivel torsion bars is limited to special requirements.

The inventive pump and combination device for treating solid bodies make a significant contribution to technical progress, in particular the environmental benefit is to be emphasized by saving material through less wear and energy.

Claims (8)

Hydrodynamic pump (P), for the transfer of liquid media (C), consisting of; 1) a gas displacement container (1) with the liquid level sensors (10) and (11), the gas inlet connection (3), gas outlet connection (4) and the connection for a liquid media feed / delivery line, 2) a feed and at the same time delivery line (5), a hydrodynamic liquid media flow control unit (6) for controlling the liquid medium in the desired direction during the pumping phases of the

Sucking "and the Funding ", 3) a delivery line (7) to the liquid media flow target, and 4) a liquid media feed container (8) which is considered a storage container for the liquid medium to be conveyed and at the same time, via the liquid level to be maintained in the container (8), causes the funnel nozzle (22) of the unit (6) to remain hermetically sealed. Hydrodynamic liquid media flow control unit (6) according to claim 1 with the function of valveless Sucking "and the Conveying "the liquid media according to the flow principle of the smallest constraint, the unit being designed constructively such that the liquid media flow is preferred in the desired direction during the pump delivery phase and wherein the liquid medium flow towards the container (1) is open without valves during the pump suction phase. Liquid media flow control unit (6) according to claims 1 and 2, wherein, in the case of constructions of the unit in the form of the nozzle feed, the liquid media flow via nozzle 21, and the liquid medium flow conveyance, via the valveless Intake bridge ", in the funnel connection (22) of the delivery line (7) can be designed such that the diameter (d4) of the connection (21) is equal to or smaller than the diameter (d5) of the delivery line (7), the half angle of ( β3) is acute to right-angled and the distance (S) of the penetration depth of connection piece (21) into funnel connection piece (22) is designed such that the round surface (X) is not larger than the area of connection piece (21) the conversion of (d4) results, according to the proportional enlargement of (X), for a larger one (S) at a constant angle (β3). Liquid media flow control unit (6) according to claims 1 and 2, the constructive suction bridge designs are each constructed in such a way that the suction openings (23) at the suction point, with a straight, continuous Continuation of the delivery line (7) are smaller in area than the diameter the continuing liquid delivery line (7), as well as with branching Intake points (Fig. 2 e and 2f), the branch angle (β2) or branch half-angle (β1) are acute and the sum of the diameter areas of the Intake ports are not larger than the diameter area of the inlet ports in the further delivery line (7), in contrast to the delivery line (5) can be expanded when a drop in liquid flow rate is irrelevant. Combination device (K) for treating solids using liquid media Using the hydrodynamic pump (P), avoiding shut-off valves and other valves and taps that affect the liquid media flow, consisting of at least 5) a pump unit (P) 6) a treatment tank (2) for the solids (B) and with continuous pump operation. 7) a liquid flow directing unit (17) consisting of at least two liquid inlet connections (19) and a liquid outlet connection opening into the central delivery line (18), the unit being so geometrically and structurally designed that an angle (β) formed from the curvature the connection piece (19) for opening into the central connection piece has an angular inclination of 10 ^o to 150 ^o , preferably 30 ^o to 90 ^o and the inlet connection pieces (19) are at a distance (N) from one another such that the radii of curvature (R) and Ri) can be constructed at an obtuse angle such that the curvatures cause only a low dynamic liquid flow resistance and the diameter (d3) is at least as large as the respective diameters of the liquid supply nozzles (d1) and (d2) Combination device according to claim 5, wherein the liquid media spouts from Treatment tank (2) with swirling torsion bars (33) with swirl cone (34) and cone trough (35) are provided to disperse solids in the liquid circuit attributed. The hydrodynamic pump (P) of claim 1, wherein the liquid media feed of the gas displacement container (1) by means of a closed variant (26) of the Liquid media flow control takes place. A hydrodynamic pump (P) according to claim 1, wherein the liquid media flow, supported by a dynamic valve (27) and by a second gas displacement container (1a) takes place according to the special requirements of the application.

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