EP0000012A1 - Bypass valve for pumps and heating installations - Google Patents

Bypass valve for pumps and heating installations Download PDF

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Publication number
EP0000012A1
EP0000012A1 EP78100020A EP78100020A EP0000012A1 EP 0000012 A1 EP0000012 A1 EP 0000012A1 EP 78100020 A EP78100020 A EP 78100020A EP 78100020 A EP78100020 A EP 78100020A EP 0000012 A1 EP0000012 A1 EP 0000012A1
Authority
EP
European Patent Office
Prior art keywords
valve
bypass
plate
bypass valve
drive plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP78100020A
Other languages
German (de)
French (fr)
Other versions
EP0000012B1 (en
Inventor
Ewald Nolte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebr Tuxhorn
TUSHORN GEB
Original Assignee
Gebr Tuxhorn
TUSHORN GEB
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
Priority claimed from DE19787802444 external-priority patent/DE7802444U1/en
Application filed by Gebr Tuxhorn, TUSHORN GEB filed Critical Gebr Tuxhorn
Publication of EP0000012A1 publication Critical patent/EP0000012A1/en
Application granted granted Critical
Publication of EP0000012B1 publication Critical patent/EP0000012B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2582—Including controlling main line flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2582—Including controlling main line flow
    • Y10T137/2584—Relief or bypass closes as main opens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2587—Bypass or relief valve biased open
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2592—Carried choke

Definitions

  • the invention relates to a bypass valve for pumps and heating systems with a control element which has two valve plates which are different in size and connected via a rod.
  • the invention is based on the object of designing a valve of the type mentioned at the outset which, irrespective of the pressure and with a decrease in the quantity consumed, continuously supplies part or all of the delivery volume to the suction line of the pump.
  • valve plate and the rod connecting it are mounted so that they can move in the flow direction of the valve and the valve plate can only be steplessly controlled via the flow.
  • valves according to the invention can be used without any special adjustment.
  • the quantities of liquid delivered can be regulated continuously down to zero.
  • the larger plate of the control element is designed as a drive plate.
  • An annular flow cross-section is always present between the outer edge of the drive plate and the housing wall. Since there is no valve seat for the drive plate, the construction is simple in terms of production technology.
  • the drive plate assumes its position under the influence of the liquid flowing through and controls the bypass valve plate via the connecting rod, it is expedient, on the one hand, to direct the flow onto the drive plate by a corresponding choice of the inner contours of the housing and, on the other hand, to provide a sufficient flow cross section for the flow around the drive plate .
  • the interior of the housing is provided with a conical taper in the flow direction behind the inlet opening to the bypass, which tapers into the region of the end position of the drive plate when the bypass is open. Then the interior of the housing extends into the area of the end position of the drive plate when the bypass is closed.
  • the bypass valve according to FIG. 1 is used in self-priming pumps.
  • the valve housing 1 has three connections, which are identified by directional arrows, namely the inlet, the outlet and the bypass. Furthermore, the valve housing is equipped with two opposing seats, namely a larger GS for the outlet and a smaller KS for the bypass.
  • the valve seats are associated with valve plates 6 and 7, which, together with a connecting rod 2, form the control element of the valve, which is movably mounted in the flow direction of the valve.
  • the storage of the rod 2 is not shown in the figures.
  • valve plate 7 is rigidly connected to the rod 2, while the valve plate 6 is arranged displaceably on the rod 2.
  • a spring 4 which is supported on the valve plate 6 and on an end plate of the rod 2, both valve plates are held against one another in tension.
  • a hood 5 prevents liquid from flowing between the bore in the valve plate 6 and the rod 2.
  • both valve plates When the pump is at a standstill, both valve plates are pressed against the respective valve seats by the spring 4. In this position, the valve plate 6 as a return valve and the valve plate 7 acts ver - prevents that the pump sucks in air at the re-start via the bypass.
  • the valve shown in FIG. 2 can be installed in the heating system behind the pump in closed heating systems.
  • the bypass opens into the return.
  • valve plate 6 When the heating regulating valves are open, the valve plate 6 is moved in the flow direction by the flow. The valve plate 7 is pulled through the rod 2 and closes the bypass. If the flow rate is reduced by closing the heating regulating valves, the forces acting on the valve plate 6 also decrease, while at the same time the forces acting on the Increase valve plate 7 acting forces. When the forces are balanced, the bypass begins to open. The opening takes place to the extent that the flow is throttled.
  • the larger plate 16 of the control element is designed as a drive plate.
  • No valve seat is assigned to this drive plate in the valve housing.
  • the interior of the housing tapers conically in the flow direction behind the inlet opening to the bypass up to the region of the end position of the drive plate when the bypass is open. This position of the drive plate is shown in FIG. 4.
  • the inside diameter of the housing is marked D at the point of greatest taper. From this point, the housing widens conically in the direction of flow, up to the end position of the drive plate 16 when the bypass is closed. This position of the drive plate is shown in FIG. 3.
  • This spatial shape of the housing ensures that when the bypass is open, the annular flow cross-section between the outer edge of the drive plate and the housing wall is small and, through the housing taper, the liquid flowing through the housing onto the unit slave disk 16 is aligned.
  • the annular flow cross section between the drive plate and the housing increases. In this area, there is less resistance to the flow around the drive plate.
  • valve plate 7 is assigned a closing spring which engages on the underside of the valve plate and is supported at the other end on a surface of the bypass line.
  • the valve plate 7 is pressed against the valve seat in the rest position shown in FIG. 3 and held in this position.
  • valve housing 1 is traversed by the medium in a straight direction.
  • the spring 14 is dimensioned so that it closes the bypass in the rest position (Fig. 3), but has no influence on the control.
  • the outlet line is open, the force of the medium flowing through acts on the drive plate 16. The force is transmitted to the valve plate 7 and keeps the bypass closed.
  • bypass valve additionally takes on the function of a check valve.
  • Such a valve can be used in pump systems with a greater pressure head and in pump systems in which the pump is temporarily shut down.
  • a check cone 15 is slidably mounted on the drive plate 16a and a valve seat GS is provided for this check cone in the housing 1.
  • This valve seat GS forms the end of the conical taper of the housing interior in the flow direction.
  • the spring 15 is dimensioned such that the valve plate 7 is not lifted from the vacuum occurring on the suction side when the pump starts.
  • valve is shown in the position in which the outlet is open.
  • the non-return cone 15 is in the position lifted off from the drive plate 16a.
  • the bypass is closed by the valve plate 7.
  • the flow through the valve housing 1 takes place in a straight direction.
  • FIG. 6 shows the valve when the pump is at a standstill. The check valve and the bypass are closed. There is no liquid flow.
  • Fig. 7 the outlet of the valve is closed.
  • the check valve is in the closed position.
  • the bypass is open and the liquid flows from the inlet nozzle to the bypass.
  • bypass valve The performance of a bypass valve according to the invention is shown in size 2 "in the diagram according to FIG. 8, specifically when used in two different systems with pumps of different strengths.
  • the quantity to be drawn is equal to the flow rate (see point Al or A2). If the purchase quantity is reduced, the curve of the purchase quantity runs parallel to the pump characteristic up to the point Bl or B2. From point B1 or B2, the quantity can be reduced continuously to the value zero (see point Cl or C2), while the bypass flow increases at the same time to point D1 or D2 to point E1 or E2. Any point between points B and C can be controlled and held for an unlimited time.
  • the position of points B and E on the pump characteristic curve are determined by the size ratio of the drive plate 16 to the valve plate 7.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

Zur Entlastung von Pumpen und zur Aufrechterhaltung einer Mindestumlaufmenge bei teilweise oder ganz geschlossenen Abnahmeleitungen ist es bekannt, druckgesteuerte Überströmventile einzusetzen. Gegenstand der Erfindung ist ein Bypassventil für Pumpen und Heizungsanlagen mit einem Steuerelem-ent, das zwei in der Größe unterschiedliche Ventilteller 6, 7 aufweist, die über eine Stange 2 verbunden sind und bei dem die Ventilteller und die sie verbindende Stange in der Durchflußrichtung bewegbar gelagert und die Ventilteller ausschließlich über den Durchfluß stufenlos steuerbar sind. Der größere Telier des Steuerelements kann als Mitnehmerscheibe 16 ausgebildet sein, zwischen deren Aussenrand und der Gehäusewand ein ringförmiger Strömungsquerschnitt vorhanden ist. Bei einer Verringerung der Abnahmemenge wird bei dem erfindungsgemäßen Bypassventil unabhängig vom Druck stufenlos ein Teil der Fördermenge oder die gesamte Fördermenge der Saugleitung der Pumpe wïeder zugeführt.It is known to use pressure-controlled overflow valves to relieve the pressure on pumps and to maintain a minimum circulation quantity in the case of partially or completely closed supply lines. The invention relates to a bypass valve for pumps and heating systems with a Steuerelem-ent, which has two different size valve plates 6, 7, which are connected via a rod 2 and in which the valve plate and the rod connecting them movably mounted in the flow direction and the valve disc can only be steplessly controlled via the flow. The larger telier of the control element can be designed as a drive plate 16, between the outer edge and the housing wall of which there is an annular flow cross section. With a reduction in the quantity taken up, in the bypass valve according to the invention, part of the delivery rate or the entire delivery rate is infinitely supplied to the suction line of the pump regardless of the pressure.

Description

Die Erfindung bezieht sich auf ein Bypassventil für Pumpen und Heizungsanlagen mit einem Steuerelement, das zwei in der Größe unterschiedliche, über eine Stange verbundene Ventilteller aufweist.The invention relates to a bypass valve for pumps and heating systems with a control element which has two valve plates which are different in size and connected via a rod.

Es ist bekannt, zur Entlastung von Pumpen und zur Aufrechterhaltung einer Mindestumlaufmenge bei teilweise oder ganz geschlossenen Abnahmeleitungen druckgesteuerte Überströmventile einzusetzen.It is known to use pressure-controlled overflow valves to relieve the pressure on pumps and to maintain a minimum circulation quantity with partially or completely closed take-off lines.

Der Erfindung liegt die Aufgabe zugrunde, ein Ventil der eingangs genannten Art so zu gestalten, welches unabhängig vom Druck bei einer Verringerung der Abnahmemenge stufenlos einen Teil oder die gesamte Fördermenge der Saugleitung der Pumpe wieder zuführt.The invention is based on the object of designing a valve of the type mentioned at the outset which, irrespective of the pressure and with a decrease in the quantity consumed, continuously supplies part or all of the delivery volume to the suction line of the pump.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Ventilteller und die sie verbindende Stange in der Durchflußrichtung des Ventils bewegbar gelagert und die Ventilteller ausschließlich über den Durchfluß stufenlos steuerbar sind.This object is achieved according to the invention in that the valve plate and the rod connecting it are mounted so that they can move in the flow direction of the valve and the valve plate can only be steplessly controlled via the flow.

Die Ventile nach der Erfindung können ohne eine besondere Einstellung eingesetzt werden. Die Abnahmemengen der geförderten Flüssigkeit können stufenlos bis auf Null heruntergeregelt werden.The valves according to the invention can be used without any special adjustment. The quantities of liquid delivered can be regulated continuously down to zero.

Bei einer Ausführungsform der Erfindung ist der größere Teller des Steuerelementes als Mitnehmerscheibe ausgebildet. Zwischen dem Aussenrand der Mitnehmerscheibe und der Gehäusewand ist ständig ein ringförmiger Strömungsquerschnitt vorhanden. Da für die Mitnehmerscheibe ein Ventilsitz entfällt, ergibt sich eine fertigungstechnisch einfache Konstruktion.In one embodiment of the invention, the larger plate of the control element is designed as a drive plate. An annular flow cross-section is always present between the outer edge of the drive plate and the housing wall. Since there is no valve seat for the drive plate, the construction is simple in terms of production technology.

Da die Mitnehmerscheibe unter dem Einfluß der durchströmenden Flüssigkeit ihre Lage einnimmt und über die Verbindungsstange den Bypassventilteller steuert, ist es zweckmäßig, durch eine entsprechende Wahl der Innenkonturen des Gehäuses die Strömung einerseits auf die Mitnehmerscheibe äuszurichten und andererseits einen ausreichenden Strömungsquerschnitt für das Umströmen der Mitnehmerscheibe vorzusehen.Since the drive plate assumes its position under the influence of the liquid flowing through and controls the bypass valve plate via the connecting rod, it is expedient, on the one hand, to direct the flow onto the drive plate by a corresponding choice of the inner contours of the housing and, on the other hand, to provide a sufficient flow cross section for the flow around the drive plate .

Um dies zu erreichen, wird der Gehäuseinnenraum in der Flußrichtung hinter der Einlaßöffnung zum Bypass mit einer konischen Verjüngung versehen, die sich bis in den Bereich der Endstellung der Mitnehmerscheibe bei geöffnetem Bypass erstreckt. Anschließend erweitert sich der Gehäuseinnenraum bis in den Bereich der Endstellung der Mitnehmerscheibe bei geschlossenem Bypass. Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden beschrieben.To achieve this, the interior of the housing is provided with a conical taper in the flow direction behind the inlet opening to the bypass, which tapers into the region of the end position of the drive plate when the bypass is open. Then the interior of the housing extends into the area of the end position of the drive plate when the bypass is closed. Embodiments of the invention are shown in the drawings and are described below.

Es zeigen:

  • Fig. 1 ein Bypassrückschlagventil für selbstansaugende Pumpen im Längsschnitt,
  • Fig. 2 ein Bypassventil, bei dem beide Ventilteller an der Verbindungsstange festgelegt sind,
  • Fig. 3 ein weiteres Ausführungsbeispiel eines
  • und 4 Bypassventils, bei dem der größere Teller des Steuerelements als Mitnehmerscheibe ausgebildet ist,
  • Fig. 5,6 eine weitere Ausführungsform eines By-
  • und 7 passrückschlagventils und
  • Fig. 8 ein Diagramm.
Show it:
  • 1 shows a bypass check valve for self-priming pumps in longitudinal section,
  • 2 shows a bypass valve in which both valve plates are fixed to the connecting rod,
  • Fig. 3 shows another embodiment of a
  • and 4 bypass valve, in which the larger plate of the control element is designed as a drive plate,
  • 5,6 shows a further embodiment of a by-
  • 7 and p assr ü ck blow valve and
  • Fig. 8 is a diagram.

Das Bypassventil nach der Fig. 1 wird bei selbstansaugenden Pumpen eingesetzt.The bypass valve according to FIG. 1 is used in self-priming pumps.

Das Ventilgehäuse 1 weist drei Anschlüsse auf, die durch Richtungspfeile gekennzeichnet sind, und zwar den Eintritt, den Austritt und den Bypass. Ferner ist das Ventilgehäuse mit zwei sich gegenüberliegenden Sitzflächen ausgerüstet, nämlich eine größere GS zum Austritt und eine kleinere KS zum Bypass. Den Ventilsitzen sind Ventilteller 6 und 7 zugeordnet, die mit einer Verbindungsstange 2 das Steuerelement des Ventils bilden, das in der Durchflußrichtung des Ventils bewegbar gelagert ist. Die Lagerung der Stange 2 ist in den Figuren nicht aufgezeigt.The valve housing 1 has three connections, which are identified by directional arrows, namely the inlet, the outlet and the bypass. Furthermore, the valve housing is equipped with two opposing seats, namely a larger GS for the outlet and a smaller KS for the bypass. The valve seats are associated with valve plates 6 and 7, which, together with a connecting rod 2, form the control element of the valve, which is movably mounted in the flow direction of the valve. The storage of the rod 2 is not shown in the figures.

Bei dem Ausführungsbeispiel nach der Fig. 1 ist nur der Ventilteller 7 mit der Stange 2 starr verbunden, während der Ventilteller 6 auf der Stange 2 verschiebbar angeordnet ist. Durch eine Feder 4, die sich an dem Ventil teller 6 und an einer Endscheibe der Stange 2 abstützt, werden beide Ventilteller gegeneinander auf Spannung gehalten. Eine Haube 5 verhindert, daß zwischen der Bohrung im Ventilteller 6 und der Stange 2 Flüssigkeit durchströmen kann.In the embodiment according to FIG. 1, only the valve plate 7 is rigidly connected to the rod 2, while the valve plate 6 is arranged displaceably on the rod 2. By a spring 4, which is supported on the valve plate 6 and on an end plate of the rod 2, both valve plates are held against one another in tension. A hood 5 prevents liquid from flowing between the bore in the valve plate 6 and the rod 2.

Beim Stillstand der Pumpe werden beide Ventilteller durch die Feder 4 an die jeweiligen Ventilsitze gedrückt. In dieser Stellung wirkt der Ventilteller 6 als Rückflußverhinderer und der Ventilteller 7 ver- hindert, daß die Pumpe beim Wiederanlaufen über den Bypass Luft ansaugt.When the pump is at a standstill, both valve plates are pressed against the respective valve seats by the spring 4. In this position, the valve plate 6 as a return valve and the valve plate 7 acts ver - prevents that the pump sucks in air at the re-start via the bypass.

Das in der Fig. 2 aufgezeigte Ventil, kann in geschlossenen Heizungsanlagen hinter der Pumpe in den Vorlauf eingebaut werden. Der Bypass mündet in den Rücklauf ein.The valve shown in FIG. 2 can be installed in the heating system behind the pump in closed heating systems. The bypass opens into the return.

Bei geöffneten Heizungsregulierventilen wird der Ventilteller 6 durch den Förderstrom in Flußrichtung verschoben. Der Ventilteller 7 wird durch die Stange 2 mit gezogen und schließt den Bypass. Wird durch Schließen der Heizungsregulierventile der Förderstrom geringer, so verringern sich auch die auf den Ventilteller 6 einwirkenden Kräfte, während sich gleichzeitig die auf den Ventilteller 7 einwirkenden Kräfte erhöhen. Beim Ausgleich der Kräfte beginnt der Bypass zu öffnen. Das Öffnen vollzieht sich in dem Maße, in dem der Förderstrom, gedrosselt wird.When the heating regulating valves are open, the valve plate 6 is moved in the flow direction by the flow. The valve plate 7 is pulled through the rod 2 and closes the bypass. If the flow rate is reduced by closing the heating regulating valves, the forces acting on the valve plate 6 also decrease, while at the same time the forces acting on the Increase valve plate 7 acting forces. When the forces are balanced, the bypass begins to open. The opening takes place to the extent that the flow is throttled.

Bei dem AUsführungsbeispiel nach den Fig. 3 und 4 ist der größere Teller 16 des Steuerelementes als Mitnehmerscheibe ausgebildet. Dieser Mitnehmerscheibe ist im Ventilgehäuse kein Ventilsitz zugeordnet. Zwischen dem Aussenrand der Mitnehmerscheibe 16 und der Gehäuseinnenwandung ist ständig ein ringförmiger Strömungsquerschnitt vorhanden, der sich bei der Bewegung des Steuerelements in Flußrichtung des Gehäuses aufgrund der in den Fig. 3 und 4 gewählten Innenkontur des Gehäuses ändert.3 and 4, the larger plate 16 of the control element is designed as a drive plate. No valve seat is assigned to this drive plate in the valve housing. Between the outer edge of the drive plate 16 and the housing inner wall there is always an annular flow cross section, which changes when the control element moves in the flow direction of the housing due to the inner contour of the housing selected in FIGS. 3 and 4.

Der Gehäuseinnenraum verjüngt sich konisch in der Flußrichtung hinter der Einlaßöffnung zum Bypass bis in den Bereich der Endstellung der Mitnehmerscheibe bei geöffnetem Bypass. Diese Stellung der Mitnehmerscheibe ist in der Fig. 4 aufgezeigt. Der Gehäuseinnendurchmesser ist an der Stelle der größten Verjüngung mit D bezeichnet. Von dieser Stelle aus erweitert sich das Gehäuse konisch in Flußrichtung, und zwar bis zu der Endlage der Mitnehmerscheibe 16 bei geschlossenem Bypass. Diese Lage der Mitnehmerscheibe ist in der Fig. 3 dargestellt.The interior of the housing tapers conically in the flow direction behind the inlet opening to the bypass up to the region of the end position of the drive plate when the bypass is open. This position of the drive plate is shown in FIG. 4. The inside diameter of the housing is marked D at the point of greatest taper. From this point, the housing widens conically in the direction of flow, up to the end position of the drive plate 16 when the bypass is closed. This position of the drive plate is shown in FIG. 3.

Durch diese Raumform des Gehäuses wird erreicht, daß bei geöffnetem Bypass der ringförmige Strömungsquerschnitt zwischen dem äusseren Rand der Mitnehmerscheibe und der Gehäusewand klein ist und durch die Gehäuseverjüngung die durch das Gehäuse strömende Flüssigkeit auf die Mitnehmerscheibe 16 ausgerichtet wird. Auf dem Weg der Mitnehmerscheibe von der Stellung nach der Fig. 4 in die Stellung nach der Fig. 3 vergrößert sich der ringförmige Strömungsquerschnitt zwischen der Mitnehmerscheibe und dem Gehäuse. In diesem Bereich wird also dem Umströmen der Mitnehmerscheibe ein geringerer Widerstand entgegengesetzt.This spatial shape of the housing ensures that when the bypass is open, the annular flow cross-section between the outer edge of the drive plate and the housing wall is small and, through the housing taper, the liquid flowing through the housing onto the unit slave disk 16 is aligned. On the path of the drive plate from the position according to FIG. 4 to the position according to FIG. 3, the annular flow cross section between the drive plate and the housing increases. In this area, there is less resistance to the flow around the drive plate.

Bei dem Ausführungsbeispiel nach den Fig. 3 und 4 ist dem Ventilteller 7 eine Schließfeder zugeordnet, die an der Unterseite des Ventiltellers angreift und sich am anderen Ende an einer Fläche der Bypassleitung abstützt. Durch die Feder 14 wird der Ventilteller 7 in der in der Fig. 3 aufgezeigten Ruhestellung an den Ventilsitz gedrückt und in dieser Stellung gehalten.3 and 4, the valve plate 7 is assigned a closing spring which engages on the underside of the valve plate and is supported at the other end on a surface of the bypass line. By means of the spring 14, the valve plate 7 is pressed against the valve seat in the rest position shown in FIG. 3 and held in this position.

Zwischen dem Eintritt und dem Austritt gibt es keine verschließbare Öffnung und keine Druckdifferenz. Das Ventilgehäuse 1 wird in gerader Richtung vom Medium durchströmt. Die Feder 14 ist so bemessen, daß sie den Bypass in Ruhestellung schließt (Fig. 3), aber auf die Steuerung keinen Einfluß hat. Bei geöffneter Austrittsleitung wirkt die Kraft des durchströmenden Mediums auf die Mitnehmerscheibe 16. Die Kraft überträgt sich auf den Ventilteller 7 und hält den Bypass geschlossen.There is no closable opening and no pressure difference between the inlet and the outlet. The valve housing 1 is traversed by the medium in a straight direction. The spring 14 is dimensioned so that it closes the bypass in the rest position (Fig. 3), but has no influence on the control. When the outlet line is open, the force of the medium flowing through acts on the drive plate 16. The force is transmitted to the valve plate 7 and keeps the bypass closed.

Bei einer Verringerung der Abnahmemenge werden die Flußgeschwindigkeit sowie die auf die Mitnehmerscheibe 16 einwirkenden Kräfte verringert. Sobald zwischen den auf die Mitnehmerscheibe 16 und den auf den Ventilteller 7 einwirkenden Kräften ein Ausgleich eintritt, beginnt der Bypass zu öffnen. Bei einer weiteren Verringerung der Abnahmemenge verschiebt sich das Steuerelement 2,7,16 gegen die Flußrichtung und öffnet den Bypass im gleichen Verhältnis, in dem die Abnahmemenge verringert wird. Der Übergang ist stufenlos und kann in jeder Stellung zeitlich unbegrenzt gehalten werden.With a decrease in the quantity to be consumed, the flow velocity and the forces acting on the drive plate 16 are reduced. As soon as between on the drive plate 16 and on the valve The bypass begins to open when 7 forces act. With a further reduction in the quantity to be taken up, the control element 2, 7, 16 shifts against the direction of flow and opens the bypass in the same ratio by reducing the quantity to be taken up. The transition is smooth and can be held indefinitely in any position.

Bei dem Ausführungsbeispiel nach den Fig. 5,6 und 7 übernimmt das Bypassventil zusätzlich die Funktion eines Rückschlagventils.In the exemplary embodiment according to FIGS. 5, 6 and 7, the bypass valve additionally takes on the function of a check valve.

Ein derartiges Ventil kann in Pumpenanlagen mit größerer Druckhöhe und in Pumpenanlagen eingesetzt werden, bei denen die Pumpe zeitweise stillgelegt wird.Such a valve can be used in pump systems with a greater pressure head and in pump systems in which the pump is temporarily shut down.

Bei diesem Bypass-Rückschlagventil ist auf der Mitnehmerscheibe 16a ein Rückschlagkegel 15 verschiebbar gelagert und für diesen Rückschlagkegel im Gehäuse 1 ein Ventilsitz GS vorgesehen. Dieser Ventilsitz GS bildet in Flußrichtung das Ende der konischen Verjüngung des Gehäuseinnenraums. Die Feder 15 ist so bemessen, daß der Ventilteller 7 beim Anlaufen der Pumpe von dem dabei saugseitig auftretenden Vakuum nicht abgehoben wird.In this bypass check valve, a check cone 15 is slidably mounted on the drive plate 16a and a valve seat GS is provided for this check cone in the housing 1. This valve seat GS forms the end of the conical taper of the housing interior in the flow direction. The spring 15 is dimensioned such that the valve plate 7 is not lifted from the vacuum occurring on the suction side when the pump starts.

In der Fig. 5 ist das Ventil in der Stellung dargestellt, in der der Austritt geöffnet ist. Der Rückschlagkegel 15 ist in der gegenüber der Mitnehmerscheibe 16a abgehobenen Stellung. Der Bypass ist durch den Ventilteller 7 geschlossen. Der Durchfluß durch das Ventilgehäuse 1 erfolgt in gerader Richtung.5, the valve is shown in the position in which the outlet is open. The non-return cone 15 is in the position lifted off from the drive plate 16a. The bypass is closed by the valve plate 7. The flow through the valve housing 1 takes place in a straight direction.

In der Fig. 6 ist das Ventil bei stillstehender Pumpe dargestellt. Das Rückschlagventil und der Bypass sind geschlossen. Es findet kein Flüssigkeitsdurchlauf statt.6 shows the valve when the pump is at a standstill. The check valve and the bypass are closed. There is no liquid flow.

In der Fig. 7 ist der Austritt des Ventils geschlossen. Das Rückschlagventil ist in der geschlossenen Stellung. Der Bypass ist geöffnet und der Flüssigkeitsdurchfluß erfolgt vom Eintrittsstutzen zum Bypass.In Fig. 7 the outlet of the valve is closed. The check valve is in the closed position. The bypass is open and the liquid flows from the inlet nozzle to the bypass.

Im Diagramm nach der Fig. 8 sind die Leistungen eines Bypassventils nach der Erfindung in der Größe 2" dargestellt, und zwar beim Einsatz in zwei verschiedenen Anlagen mit verschieden starken Pumpen.The performance of a bypass valve according to the invention is shown in size 2 "in the diagram according to FIG. 8, specifically when used in two different systems with pumps of different strengths.

Bei ganz geöffneter Austrittsleitung ist die Abnahmemenge gleich der Fördermenge (sh. Punkt Al bzw. A2). Wir die Abnahmemenge verringert, so verläuft die Kurve der Abnahmemenge parallel zur Pumpenkennlinie bis zum Punkt Bl bzw. B2. Vom Punkt Bl bzw. B2 lässt sich die Abnahmemenge stufenlos bis auf den Wert Null (sh. Punkt Cl bzw. C2) verringern, während der Bypassdurchfluß sich gleichzeitig zum Punkt Dl bzw. D2 bis auf den Punkt E1 bzw. E2 erhöht. Zwischen den Punkten B und C kann jeder beliebige Punkt angesteuert und auf unbegrenzte Zeit gehalten werden. Die Lage der Punkte B und E auf der Pumpenkennlinie werdendurch das Größenverhältnis der Mitnehmerscheibe 16 zum Ventilteller 7 konstruktiv festgelegt.When the outlet line is fully open, the quantity to be drawn is equal to the flow rate (see point Al or A2). If the purchase quantity is reduced, the curve of the purchase quantity runs parallel to the pump characteristic up to the point Bl or B2. From point B1 or B2, the quantity can be reduced continuously to the value zero (see point Cl or C2), while the bypass flow increases at the same time to point D1 or D2 to point E1 or E2. Any point between points B and C can be controlled and held for an unlimited time. The position of points B and E on the pump characteristic curve are determined by the size ratio of the drive plate 16 to the valve plate 7.

Claims (7)

1. Bypassventil für Pumpen und Heizungsanlagen mit einem Steuerelement, das zwei in der Größe unterschiedliche, über eine Stange verbundene Ventilteller aufweist, dadurch gekennzeichnet, daß die Ventilteller (6,7) und die sie verbindende Stange (2) in der Durchflußrichtung bewegbar gelagert und die Ventilteller ausschließlich über den Durchfluß stufenlos steuerbar sind.1. Bypass valve for pumps and heating systems with a control element which has two different in size, connected via a rod valve plate, characterized in that the valve plate (6,7) and the connecting rod (2) movably mounted in the flow direction and the valve disc can only be steplessly controlled via the flow. 2. Bypassventil nach Anspruch 1, dadurch gekennzeichnet, daß der Ventilteller (6) auf der Stange (2) verschiebbar gelagert und an dem Ventilteller (6) eine Feder (4) sich abstützt, deren anderes Ende an einer Endscheibe der Stange (2) anliegt.2. Bypass valve according to claim 1, characterized in that the valve plate (6) on the rod (2) slidably mounted and on the valve plate (6) a spring (4) is supported, the other end of an end plate of the rod (2) is present. 3. Bypassventil nach Anspruch 2, dadurch gekennzeichnet, daß dem Ventilteller (6) eine sich am Ventilteller (6) abstützende Haube (5) zugeordnet ist, in deren Innenraum die Endscheibe und die Feder (4) vorgesehen sind.3. Bypass valve according to claim 2, characterized in that the valve plate (6) on the valve plate (6) supporting hood (5) is assigned, in the interior of which the end plate and the spring (4) are provided. 4. Bypassventil nach Anspruch 1, dadurch gekennzeichnet, daß der dem Bypass zugeordnete Ventilteller (7) mit einer an der Unterseite angreifenden Schließfeder (14) belastet ist.4. Bypass valve according to claim 1, characterized in that the valve plate associated with the bypass (7) is loaded with a closing spring acting on the underside (14). 5. Bypassventil nach Anspruch 1, dadurch gekennzeichnet, daß der größere Teller des Steuerelements als Mitnehmerscheibe (16) ausgebildet ist, zwischen deren Aussenrand und der Gehäusewand ein ringförmiger Strömungsquerschnitt vorhanden ist.5. Bypass valve according to claim 1, characterized in that the larger plate of the control element is designed as a drive plate (16), between the off senrand and the housing wall an annular flow cross-section is present. 6. Bypassventil nach Anspruch 5, dadurch gekennzeichnet, daß der Gehäuseinnenraum sich in der Flußrichtung hinter der Einlaßöffnung zum Bypass bis in den Bereich der Endstellung der Mitnehmerscheibe (16) bei geöffnetem Bypass konisch verjüngt und der Gehäuseinnenraum sich anschließend bis in den Bereich der Endstellung der Mitnehmerscheibe bei geschlossenem Bypass konisch erweitert.6. Bypass valve according to claim 5, characterized in that the housing interior tapers in the flow direction behind the inlet opening to the bypass into the area of the end position of the drive plate (16) with open bypass and the housing interior then tapers into the area of the end position Drive plate conically expanded when the bypass is closed. 7. Bypassventil nach Anspruch 5, dadurch gekennzeichnet, daß auf der Mitnehmerscheibe (16a) ein Rückschlagkegel (15) verschiebbar gelagert und für diesen Rückschlagkegel im Gehäuse (1) ein Ventilsitz GS vorgesehen ist.7. Bypass valve according to claim 5, characterized in that on the drive plate (16a) a check cone (15) is slidably mounted and a valve seat GS is provided for this check cone in the housing (1).
EP78100020A 1977-06-03 1978-06-01 Bypass valve for pumps and heating installations Expired EP0000012B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2725044 1977-06-03
DE2725044 1977-06-03
DE7802444U 1978-01-27
DE19787802444 DE7802444U1 (en) 1978-01-27 1978-01-27 BYPASS VALVE FOR PUMPS AND HEATING SYSTEMS

Publications (2)

Publication Number Publication Date
EP0000012A1 true EP0000012A1 (en) 1978-12-20
EP0000012B1 EP0000012B1 (en) 1980-01-09

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Family Applications (1)

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EP78100020A Expired EP0000012B1 (en) 1977-06-03 1978-06-01 Bypass valve for pumps and heating installations

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US (1) US4243064A (en)
EP (1) EP0000012B1 (en)
CA (1) CA1087491A (en)
DD (1) DD136525A5 (en)
DK (1) DK155457C (en)
FI (1) FI781713A (en)
NO (1) NO781925L (en)

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US4243064A (en) * 1977-06-03 1981-01-06 Tuxhorn Kg Bypass valve for pumps, heating systems and the like
GB2154707A (en) * 1984-02-22 1985-09-11 Ross Operating Valve Co Inlet poppet valve
FR2589972A1 (en) * 1985-11-08 1987-05-15 Mariotti Rene FLOW CONTROL VALVE, IN PARTICULAR FOR SUPPLYING OIL FROM A FRYING VESSEL
US4872474A (en) * 1988-10-14 1989-10-10 Ore-Ida Vended Products, Inc. Diverter valve
USRE33712E (en) * 1981-03-13 1991-10-08 Ore-Ida Vended Products, Inc. Deep-fryer pan for industrial fryers
WO2010148005A1 (en) 2009-06-18 2010-12-23 Tyco Fire Products Lp Dual-purpose fluid control valve
GB2608863A (en) * 2021-07-15 2023-01-18 Absolute Water Tech Solutions Ltd Water supply diversion device

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DE3612063C1 (en) * 1986-04-10 1991-09-26 Westfalia Separator Ag Device for regulating the concentrate drain of a centrifuge
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DE19543085A1 (en) * 1995-11-18 1997-05-22 Luk Automobiltech Gmbh & Co Kg pump
US6357467B1 (en) 2000-03-27 2002-03-19 Grinnell Corporation Automatic water supply shutoff valve
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US8215330B2 (en) * 2007-03-30 2012-07-10 Tyco Valves & Controls, LP Adjustable recirculating valve
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US9657847B2 (en) 2012-07-18 2017-05-23 Pres-Vac Engineering Aps Pressure relief valve
CN102900866B (en) * 2012-11-14 2014-01-29 王文龙 Pneumatic valve and working method thereof
KR102382093B1 (en) * 2016-12-13 2022-04-04 현대자동차주식회사 Check valve including vacuum hoses for reducing costs and improving performance
US11446681B2 (en) * 2018-06-25 2022-09-20 Robert Dale Beggs Liquid recirculating valve
US11000863B2 (en) * 2019-03-26 2021-05-11 Pentair Flow Technologies, Llc Push valve assembly and method
CN110440024A (en) * 2019-08-13 2019-11-12 澎阳泵业泰州有限公司 A kind of reversible back-flow preventer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243064A (en) * 1977-06-03 1981-01-06 Tuxhorn Kg Bypass valve for pumps, heating systems and the like
USRE33712E (en) * 1981-03-13 1991-10-08 Ore-Ida Vended Products, Inc. Deep-fryer pan for industrial fryers
GB2154707A (en) * 1984-02-22 1985-09-11 Ross Operating Valve Co Inlet poppet valve
FR2589972A1 (en) * 1985-11-08 1987-05-15 Mariotti Rene FLOW CONTROL VALVE, IN PARTICULAR FOR SUPPLYING OIL FROM A FRYING VESSEL
EP0223696A1 (en) * 1985-11-08 1987-05-27 René Mariotti Flow control valve, especially for feeding oil into a deep-frying vessel
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US4872474A (en) * 1988-10-14 1989-10-10 Ore-Ida Vended Products, Inc. Diverter valve
WO2010148005A1 (en) 2009-06-18 2010-12-23 Tyco Fire Products Lp Dual-purpose fluid control valve
EP2443369A1 (en) * 2009-06-18 2012-04-25 Tyco Fire Products LP Dual-purpose fluid control valve
EP2443369A4 (en) * 2009-06-18 2015-02-18 Tyco Fire Products Lp Dual-purpose fluid control valve
GB2608863A (en) * 2021-07-15 2023-01-18 Absolute Water Tech Solutions Ltd Water supply diversion device

Also Published As

Publication number Publication date
FI781713A (en) 1978-12-04
DD136525A5 (en) 1979-07-11
DK246578A (en) 1978-12-04
DK155457C (en) 1989-10-23
CA1087491A (en) 1980-10-14
NO781925L (en) 1978-12-05
DK155457B (en) 1989-04-10
EP0000012B1 (en) 1980-01-09
US4243064A (en) 1981-01-06

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