DE917221C - Freewheel check valve - Google Patents

Freewheel check valve

Info

Publication number
DE917221C
DE917221C DESCH7425A DESC007425A DE917221C DE 917221 C DE917221 C DE 917221C DE SCH7425 A DESCH7425 A DE SCH7425A DE SC007425 A DESC007425 A DE SC007425A DE 917221 C DE917221 C DE 917221C
Authority
DE
Germany
Prior art keywords
closure piece
flap according
seat
free
seat surface
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
DESCH7425A
Other languages
German (de)
Inventor
Willi Odendahl
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.)
H SCHROEDER AND CO
Original Assignee
H SCHROEDER AND CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by H SCHROEDER AND CO filed Critical H SCHROEDER AND CO
Priority to DESCH7425A priority Critical patent/DE917221C/en
Application granted granted Critical
Publication of DE917221C publication Critical patent/DE917221C/en
Expired legal-status Critical Current

Links

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
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member

Description

Die Verlustleistung einer Kreiselpumpe setzt sich in Wärme um. Die Abführung dieser Wärme wird mit kleiner werdender Fördermenge schwierig. Bei Unterschreitung einer durch Pumpe und Betriebsverhältnisse bestimmten Fördermenge reicht die Abführung der Wärme nicht mehr aus, so daß nun Gefahr besteht, daß der Pumpeninhalt verdampft, die Pumpe also festläuft. Zur Beiseitigung dieser Gefahr haben sich in die Druckleitung eingebaute Freilauf-Rückschlagventile und -klappen bewährt, die bei abnehmender Fördermenge mittels des Kegels bzw. der Klappe über Hebel und Gestänge eine Freilaufdüse öffnen, so daß die kritische Fördermenge nicht mehr unterschritten «-erden kann.The power loss of a centrifugal pump is converted into heat. the Removal of this heat becomes difficult as the flow rate decreases. When falling below the discharge is sufficient for a delivery rate determined by the pump and operating conditions the heat no longer dissipates, so that there is now a risk that the contents of the pump will evaporate, the pump is stuck. To eliminate this danger you have to go into the pressure pipe built-in free-wheeling check valves and flaps proven to be effective with decreasing Delivery rate by means of the cone or the flap via lever and linkage to a free-running nozzle open so that the critical delivery rate can no longer be undershot.

Die üblichen Freilauf-Rückschlagventile fallen in ihren Abmessungen und Gewichten groß aus, während die üblichen Freilauf-Rückschlagklappen strömungstechnisch ungünstig sind und große Druckverluste hervorrufen.The usual free-wheeling check valves fall in their dimensions and weights big, while the usual free-wheeling non-return valves are fluidic are unfavorable and cause large pressure losses.

Erfindungsgemäß werden durch Vereinigung der beiden Bauarten diese Nachteile beseitigt.According to the invention, by combining the two types, these Disadvantages eliminated.

Ein Kegelkörper i ist ober- und unterhalb einer Sitzfläche durch zwei Lenker 2 und 3 im Gehäuse 4: befestigt und kann sich parallel zu sich verstellen. Er führt also die Schwenkbewegung einer Klappe aus, vermeidet jedoch durch die Parallelverstellung und seine stromlinienförmige Ausbildung die Entstehung von Wirbeln. Der obere Lenker 2 hat in seinen Gelenken ausreichend Spiel, so daß die Sitzfläche sich setzen kann. Der untere Lenker 3 betätigt durch einen Drehschieber 5 die Freilaufdüse 6. Durch die Anwendung eines Drehschiebers ergeben sich ein einfacher Aufbau, ein großes Hebelverhältnis und dadurch kleine Baulänge und geringes Gewicht.A cone body i is above and below a seat by two Handlebars 2 and 3 in housing 4: fixed and can be adjusted parallel to itself. So it executes the pivoting movement of a flap, but avoids the parallel adjustment and its streamlined design creates eddies. The upper handlebar 2 has enough play in its joints so that the seat can sit down. The lower link 3 actuates the free-wheeling nozzle 6 through a rotary slide valve 5 the use of a rotary valve results in a simple structure, a large one Leverage ratio and thus small overall length and low weight.

Claims (5)

PATENTANSPRÜCHE: i. Freilauf-Rückschlagklappe, dadurch gekennzeichnet, daß das Verschlußstück (i) ober-und unterhalb der Sitzfläche durch je einen Lenker (2,3) im Gehäuse (4.) in Durchflußrichtung parallel oder nahezu parallel zu sich selbst beweglich befestigt ist, wobei der in Durchflußrichtung vor der Sitzfläche liegende Lenker (3) einen Drehschieber (5) betätigt, der eine Freilaufdüse (6) rechtzeitig öffnet, wenn sich das Verschlußstück der Schließlage nähert, so daß die von der Pumpe geförderte Flüssigkeitsmenge nie den kritischen Mindestwert unterschreitet. PATENT CLAIMS: i. Free-wheeling non-return valve, characterized in that the closure piece (i) above and below the seat surface by a link (2, 3) each in the housing (4) is movably attached in the flow direction parallel or almost parallel to itself, the in Direction of flow in front of the seat area handlebar (3) actuates a rotary valve (5) which opens a free-running nozzle (6) in good time when the closure piece approaches the closed position, so that the amount of liquid delivered by the pump never falls below the critical minimum value. 2. Klappe nach Anspruch i, dadurch gekennzeichnet, daß das Gelenk (5) des Lenkers (3) als Drehschieber ausgebildet ist. 2. Flap according to claim i, characterized in that the joint (5) of the handlebar (3) is designed as a rotary valve. 3. Klappe nach Anspruch i, dadurch gekennzeichnet, daß das Verschlußstück (i) stromlinienförmig ausgebildet ist. q.. 3. flap according to claim i, characterized in that that the closure piece (i) is streamlined. q .. Klappe nach Anspruch i, dadurch gekennzeichnet, daß sie vertikal eingebaut ist, so daß das Verschlußstück vom Strom der geförderten Flüssigkeitsmenge entgegen seinem Gewicht in Offenlage gehalten wird. Flap according to claim i, characterized in that it is installed vertically so that the closure piece of the flow of the amount of liquid conveyed against its weight in the open position is held. 5. Klappe nach Anspruch i, dadurch gekennzeichnet, daß das Verschlußstück (i) an dem von der Sitzfläche entfernt liegenden Lenker (2) mit Spiel befestigt ist, so daß seine Sitzfläche sich dem Klappensitz am Gehäuse anpassen kann. Angezogene Druckschriften: Deutsche Patentschriften Nr. 410 567, 651 997, 705696. 5. Flap according to claim i, characterized in that the closure piece (i) is attached to the link (2) remote from the seat surface with play, so that its seat surface can adapt to the valve seat on the housing. Cited publications: German patent specifications No. 410 567, 651 997, 705696.
DESCH7425A 1951-09-01 1951-09-01 Freewheel check valve Expired DE917221C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH7425A DE917221C (en) 1951-09-01 1951-09-01 Freewheel check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH7425A DE917221C (en) 1951-09-01 1951-09-01 Freewheel check valve

Publications (1)

Publication Number Publication Date
DE917221C true DE917221C (en) 1954-08-26

Family

ID=7425359

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH7425A Expired DE917221C (en) 1951-09-01 1951-09-01 Freewheel check valve

Country Status (1)

Country Link
DE (1) DE917221C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967300C (en) * 1954-10-19 1957-10-31 Schroeder & Co H Free-running check valve
US3027909A (en) * 1957-06-06 1962-04-03 David F Wiseman & Sons Ltd Fluid control valves

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE410567C (en) * 1923-01-02 1925-03-03 Elektr App Fr Sauter A G Fab Safety valve with handlebar guide for the valve carrier
DE651997C (en) * 1936-01-01 1937-10-23 Klein Device for the automatic discharge of conveying fluid through centrifugal pumps, in particular boiler feed pumps, with the pressure line shut off
DE705696C (en) * 1938-04-01 1941-05-07 Klein Schanzlin & Becker Akt G Device for the automatic discharge of conveying fluid through centrifugal pumps, in particular boiler feed pumps, with the pressure line shut off

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE410567C (en) * 1923-01-02 1925-03-03 Elektr App Fr Sauter A G Fab Safety valve with handlebar guide for the valve carrier
DE651997C (en) * 1936-01-01 1937-10-23 Klein Device for the automatic discharge of conveying fluid through centrifugal pumps, in particular boiler feed pumps, with the pressure line shut off
DE705696C (en) * 1938-04-01 1941-05-07 Klein Schanzlin & Becker Akt G Device for the automatic discharge of conveying fluid through centrifugal pumps, in particular boiler feed pumps, with the pressure line shut off

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967300C (en) * 1954-10-19 1957-10-31 Schroeder & Co H Free-running check valve
US3027909A (en) * 1957-06-06 1962-04-03 David F Wiseman & Sons Ltd Fluid control valves

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