DE339722C - Safety device for centrifugal pumps - Google Patents

Safety device for centrifugal pumps

Info

Publication number
DE339722C
DE339722C DE1920339722D DE339722DD DE339722C DE 339722 C DE339722 C DE 339722C DE 1920339722 D DE1920339722 D DE 1920339722D DE 339722D D DE339722D D DE 339722DD DE 339722 C DE339722 C DE 339722C
Authority
DE
Germany
Prior art keywords
safety device
centrifugal pumps
housing
pump housing
drive
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
DE1920339722D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE339722C publication Critical patent/DE339722C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Sicherheitsvorrichtung für. Kreiselpumpen. Beim Betrieb von Kreiselpumpen besteht die Gefahr, daß sich dile Pumpen festlaufen und beschädigt werden, wenn sie infolge undichten Fußventils bzw. infolge Luftansaugens zu großer Saughöhe o. dgl. wasserfrei werden.Safety device for. Centrifugal pumps. When operating centrifugal pumps there is a risk of the pumps seizing up and being damaged if they due to leaky foot valve or due to air intake too high suction height or the like. Like. Be anhydrous.

Die Erfindung betrifft eine Sicherheitsvorrichtung, durch welche .die Pumpe stillgesetzt oder ihr Anlassen verhindert wird, sofern für sie die geschilderte Gefahr besteht. Nach der Erfindung ist die Antriebsvorrichtung der Pumpe mit einer Schaltvorrichtung versehen, deren Stellung von der Füllung des Pumpengehäuses abhängig gemacht ist. In dem Gehäuse oder einem mit ihm in Verbindung stehenden Nebenraum ist beispielsweise ein Schwimmer oder eine durch; den Wasserstand beeinflußte Kontaktvorrichtung ange-'bracht, durch die mittelbar oder unmittelbar auf den Antrieb der Maschine eingerückt wird. Es kann z. B. durch diese Vorrichtung. der Stromkreis eines elektrischen Antriebsmotors geschlossen und geäffnet und das Einlaßventil eines anderen Motors, eine Kupplung oder ein Riemenverschieber bewegt werden.The invention relates to a safety device through which .die The pump is stopped or it is prevented from starting, provided that the above is for you There is danger. According to the invention, the drive device of the pump is provided with a Provided switching device, the position of which depends on the filling of the pump housing is made. In the housing or in an adjoining room connected to it is for example a swimmer or a through; contact device influenced the water level attached, directly or indirectly to the drive of the machine is indented. It can e.g. B. by this device. the circuit of an electric Drive motor closed and open and the inlet valve of another motor, a clutch or a belt shifter can be moved.

In der Zeichnung sind zwei Ausführungsformen dargestellt.Two embodiments are shown in the drawing.

Es zeigen: Fig. z eine Vorrichtung mit Kontaktvorrichtung im Pumpengehäuse, Fig. a eine Vorrichtung mit Schwimmer. Durch: das Gehäuse a der Kreiselpumpe sind isoliert zwei Leitungen b, c geführt, die in dem Saugraum d enden. In dem Stromkreis, zu dem diese Leitungen gehören, liegen die Stromquelle e und der Elektromagnet f. Der unter der Wirkung der Feder g stehende Anker h dieses, Elektromagneten bilidet den Schalter für den Stromkreis i des Antriebsmotors k.They show: FIG. 2 a device with a contact device in the pump housing, Fig. A shows a device with a float. By: the housing a of the centrifugal pump are insulated two lines b, c out, which end in the suction chamber d. In the circuit to which these lines belong, are the power source e and the electromagnet f. The armature h, which is under the action of the spring g, forms this electromagnet the switch for the circuit i of the drive motor k.

Der Antriebsmotor erhält somit nur so lange Strom, als die Enden der Leitungen b, c durch .die im Gehäuse a befindliche Flüssigkeit leitend verbunden sind, da der Anker h durch die Feder g sofort zurückgezogen wird, wenn, beim Fallen des Wassers im Pumpengehäuse der Elektromagnet f stromlos wird.The drive motor thus only receives current as long as the ends of the lines b, c are conductively connected by the liquid in the housing a, since the armature h is immediately withdrawn by the spring g when the water falls in the pump housing Electromagnet f is de-energized.

Bei der Ausführungsform nach der Fig. a ist mit dem Saugraum d des Pumpengehäuses a ein besonderer Schwimmerraum L verbunden, in dem der Schwimmer m angeordnet ist, dessen Stange o ein Kontaktstück p trägt. Wenn das Gehäuse a und damit der Raum l mit Flüssigkeit gefüllt ist, ist der Stromkreis i des Motors k geschlossen, während beim Fallen des Wassers im Gehäuse der Stromkreis geöffnet und der Motor stillgesetzt wird. Dieser Schwimmer könnte beispielsweise auch unmittelbar das: Ventil eines anderen Motors, eine Kupplung o. dgl. beeinflussen oder etwa ein Fallgewicht auslösen, welches seinerseits den Antrieb einschaltet.In the embodiment according to FIG. A, the suction chamber d of the Pump housing a connected to a special float space L, in which the float m is arranged, the rod o carries a contact piece p. When the case a and so that the space l is filled with liquid, the circuit i of the motor is k closed, while when the water falls in the housing, the circuit is opened and the motor is stopped. This swimmer could, for example, also directly that: affect the valve of another engine, a clutch or the like, or something like that Trigger the drop weight, which in turn switches on the drive.

Claims (3)

PATENT-ANSPRÜcHE: z. Sicherheitsvorrichtung für Kreiselpumpen, dadurch gekennzeichnet, daß die Schaltvorrichtung des Antriebes (m) durch den Wasserstand im Pumpengehäuse (a) beeinflußt wird. PATENT CLAIMS: e.g. Safety device for centrifugal pumps, thereby characterized in that the switching device of the drive (m) by the water level is influenced in the pump housing (a). 2. Sicherheitsvorrichtung nach Anspruch i, dadurch gekennzeichnet, daß im Pumpengehäuse (a) oder einem mit ihm in Verbindung stehenden Raum eine Kontaktvorrichtung (b, c) angebracht ist, die durch die im Gehäuse befindliche Flüssigkeit geschlossen wird (Fig. i). 2. Safety device according to claim i, characterized in that in the pump housing (a) or one with a contact device (b, c) is attached to the room connected to it, which is closed by the liquid in the housing (Fig. i). 3. Sicherheitsvorrichtung nach Anspruch i, dadurch gekennzeichnet, daB in dem Pumpengehäuse (a) oder einem mit ihm in Verbindung stehenden Raum (l) ein Schwimmer (m) angeordnet ist, der mittelbar oder unmittelbar den Antrieb ein- und ausschaltet (Fig. 2).3. Safety device according to claim i, characterized in that in the pump housing (a) or a with it connected room (l) a float (m) is arranged, which indirectly or immediately switches the drive on and off (Fig. 2).
DE1920339722D 1920-10-21 1920-10-21 Safety device for centrifugal pumps Expired DE339722C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE339722T 1920-10-21

Publications (1)

Publication Number Publication Date
DE339722C true DE339722C (en) 1921-08-04

Family

ID=6223933

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1920339722D Expired DE339722C (en) 1920-10-21 1920-10-21 Safety device for centrifugal pumps

Country Status (1)

Country Link
DE (1) DE339722C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130293B (en) * 1959-12-29 1962-05-24 W Dan Bergman Ab Immersion drainage pump with float switch device in the liquid channel
DE1653686B1 (en) * 1967-03-03 1970-08-27 Cdm Co Ltd Control device for an underwater pump
DE3440977A1 (en) * 1984-11-09 1986-05-22 Loewe Pumpenfabrik GmbH, 2120 Lüneburg System for automatically switching liquid pumps on and off
EP1510698A2 (en) 2003-08-26 2005-03-02 Herborner Pumpenfabrik J.H.Hoffmann GmbH & Co. Device for protecting a pump against dry running

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130293B (en) * 1959-12-29 1962-05-24 W Dan Bergman Ab Immersion drainage pump with float switch device in the liquid channel
DE1653686B1 (en) * 1967-03-03 1970-08-27 Cdm Co Ltd Control device for an underwater pump
DE3440977A1 (en) * 1984-11-09 1986-05-22 Loewe Pumpenfabrik GmbH, 2120 Lüneburg System for automatically switching liquid pumps on and off
EP1510698A2 (en) 2003-08-26 2005-03-02 Herborner Pumpenfabrik J.H.Hoffmann GmbH & Co. Device for protecting a pump against dry running

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