DE935595C - Auxiliary suction slide for piston pumps with slide control - Google Patents

Auxiliary suction slide for piston pumps with slide control

Info

Publication number
DE935595C
DE935595C DESCH8523A DESC008523A DE935595C DE 935595 C DE935595 C DE 935595C DE SCH8523 A DESCH8523 A DE SCH8523A DE SC008523 A DESC008523 A DE SC008523A DE 935595 C DE935595 C DE 935595C
Authority
DE
Germany
Prior art keywords
slide
auxiliary suction
suction
piston
pressure
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
DESCH8523A
Other languages
German (de)
Inventor
Kurt Dr-Ing Schoene
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
Priority to DESCH8523A priority Critical patent/DE935595C/en
Application granted granted Critical
Publication of DE935595C publication Critical patent/DE935595C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/16Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

In dem Patent 911 451 ist ein Hilfsansaugschieber für doppeltwirkende Kolbenpumpen beschrieben, die durch einen den Kolben zentrisch umgebenden rohrförmigen Schieber gesteuert werden, der den Saugkanal bei oder vor Beendigung des Druckhubes öffnet, um entweder zu Beginn des Saughubes Flüssigkeit aus dem Druckraum in den Hubraum einströmen zu lassen, oder beim vorzeitigen Abschluß des Druckkanales Flüssigkeit aus dem Hubraum in den Saugraum entweichen zu lassen.In the patent 91 1 451 an auxiliary suction valve for double-acting piston pumps is described, which are controlled by a tubular slide centrally surrounding the piston, which opens the suction channel at or before the end of the pressure stroke in order to either transfer fluid from the pressure chamber into the displacement chamber at the beginning of the suction stroke to flow in, or in the event of the premature closure of the pressure channel, to allow liquid to escape from the displacement into the suction chamber.

In dem Patent 9i i 45i ist als Hilfsansaugschieber ein hin und her gehender Rohrschieber vorgesehen. Mit Rücksicht auf den Antrieb des Schiebers, besonders wenn er vom Kreuzkopf aus angetrieben wird, bietet jedoch ein Drehschieber Vorteile. Ein weiterer Vorzug des Drehschiebers gegenüber dem Rohrschieber ist die Möglichkeit, ihn so auszubilden, daß er durch den Flüssigkeitsdruck gegen die Lauffläche gedrückt wird und sich dauernd schleift.In the patent 9i i 45i is a back and forth as an auxiliary suction valve outgoing pipe valve provided. With regard to the drive of the slide, especially however, a rotary valve offers advantages when driven from the crosshead. Another advantage of the rotary valve over the tubular valve is the possibility of to train it so that it is pressed against the tread by the pressure of the liquid is and constantly drags.

Der Gegenstand der Erfindung ist die Verwendung eines von außen gesteuerten Drehschiebers für den genannten Zweck. Die Erfindung soll an Hand der Zeichnungen beschrieben werden.The object of the invention is the use of an externally controlled Rotary valve for the stated purpose. The invention is to be based on the drawings to be discribed.

Abb. i ist ein axialer Längsschnitt durch den Pumpenkörper und Abb.2 ein Schnitt durch den Pumpenkörper senkrecht zur Längsachse desselben.Fig. I is an axial longitudinal section through the pump body and Fig. 2 a section through the pump body perpendicular to the longitudinal axis of the same.

i ist der Pumpenkörper mit zwei ringförmigen Saugräumen und einem mittleren Druckraum. 2 ist der Kolben, der durch die Kolbenstange 3 hin und her bewegt wird. 4 sind die beiden ringförmigen Schieber, welche den Kolben zentrisch umgeben und durch Stege 3 miteinander verbunden sind und durch nicht gezeichnete Schieberstangen hin und her bewegt werden. Die Schieber 4 öffnen und schließen die Saug- und Druckkanäle im Augenblick der Totlagen des Kolbens 2.i is the pump body with two annular suction spaces and one middle pressure chamber. 2 is the piston that goes back and forth through the piston rod 3 is moved. 4 are the two ring-shaped slides that center the piston surrounded and connected by webs 3 and by not shown Slide rods are moved back and forth. The slide 4 open and close the Suction and pressure channels at the moment of the dead center of the piston 2.

Wenn der Schieber 4 zu Beginn des -Saughubes den Saugkanal zu öffnen beginnt, kann der äußere Luftdruck die Wassersäule im Saugkanal nicht genügend beschleunigen, daß sie vom Kolbenboden nicht abreißt. Der Hubraum muß aber ständig mit Flüssigkeit gefüllt sein, da sonst im Augenblick der verspäteten Füllung heftige Stöße eintreten. Daher ist ein Drehschieber 6 vorgesehen, der sich in einer Büchse 7 mit Längsschlitzen dreht und durch die Spindel 8 mit dem Vierkant 9 so durch eine äußere Steuerung hin und her gedreht wird, daß er beide Pumpenseiten steuert, und zwar so, daß er kurz vor Beendigung des Druckhubes eine Verbindung freigibt zwischen Hubz- und Druckraum durch die Kanäle ii bzw. 12 und kurz nach Beginn des Saughubes wieder schließt, so daß zu Beginn des Saughubes Flüssigkeit aus dem Druckin den Hubraum strömt bis der Schieber 4 den Saugkanal genügend geöffnet hat, so daß der Hubraum immer voll gefüllt bleibt. Auf diese Weise wird ein stoßfreies Ansaugen der Pumpe auch bei hohen Drehzahlen und großen Saughöhen erreicht.When the slide 4 opens the suction channel at the beginning of the suction stroke begins, the external air pressure cannot accelerate the water column in the suction channel enough, that it does not tear off the piston crown. The displacement must always be fluid be filled, otherwise violent impacts occur at the moment of the delayed filling. Therefore, a rotary valve 6 is provided, which is located in a sleeve 7 with longitudinal slots rotates and through the spindle 8 with the square 9 so by an external control is rotated back and forth so that it controls both sides of the pump, in such a way that it shortly before the end of the pressure stroke, a connection is released between the stroke space and pressure space through channels ii or 12 and closes again shortly after the start of the suction stroke, so that at the beginning of the suction stroke liquid flows out of the pressure into the displacement up to the slide 4 has opened the suction channel sufficiently so that the cubic capacity is always full remains filled. In this way, the pump will also be able to suck in smoothly high speeds and large suction heights.

Der Drehschieber 6 wird ständig gegen die Büchse 7 durch den Flüssigkeitsdruck des Druckraumes gepreßt, da in einem der Kanäle ii oder i2 stets Saugspannung herrscht. Um i'hn auch bei Leerlauf der Pumpe angedrückt zu halten, ist zwischen Vierkant 9 und Schieber 6 die Blattfeder io vorgesehen.The rotary valve 6 is constantly against the sleeve 7 by the liquid pressure of the pressure chamber, since suction tension always prevails in one of the channels ii or i2. In order to keep it pressed down even when the pump is idling, there is a square between 9 and slider 6 the leaf spring io provided.

Der Antrieb des Schiebers 6 kann in mannigfacher Weise vom Kreuzkopf oder der Welle der Maschine aus erfolgen; am einfachsten nach Abb. i durch einen auf der Spindel _8 befestigten Hebel 13, der vom Kreuzkopf aus angetrieben wird.The drive of the slide 6 can be in many ways from the cross head or the shaft of the machine can be made from; the easiest way according to Fig. i by a on the spindle _8 attached lever 13, which is driven from the cross head.

Claims (1)

PATENTANSPRUCH: Von außen gesteuerter Hilfsansaugschieber für doppeltwirkende Kolbenpumpen, die durch einen den Kolben .zentrisch umgebenden rohrförmigen Schieber gesteuert werden, der die Saug- und Druckkanäle in den Totlagen des Kolbens öffnet und schließt, während der Hilfsansaugschieber zwischen den beiden Hubräumen angeordnet ist und so gesteuert ist, daß Flüssigkeit aus dem Druckraum in die Hubräume strömen kann, nach Patent 91145 i dadurch gekennzeichnet, daß der Hilfsansaugschieber als Drehschieber (6) ausgebildet ist, dessen Innenraum mit dem Druckraum der Pumpe in Verbindung steht und der in der Laufbüchse -(7) vorgesehene Längsschlitze steuert, die durch Kanäle (i i bzw. 12) mit den Hubräumen verbunden sind. Angezogene Druckschriften: Deutsche Patentschriften Nr. 302 152, 66a 562.PATENT CLAIM: Externally controlled auxiliary suction slide for double-acting piston pumps, which are controlled by a tubular slide that surrounds the piston in the center and which opens and closes the suction and pressure channels in the dead ends of the piston, while the auxiliary suction slide is arranged between the two displacements and is controlled in this way is that liquid can flow from the pressure chamber into the displacement, according to patent 91 1 45 i characterized in that the auxiliary suction valve is designed as a rotary valve (6), the interior of which is in connection with the pressure chamber of the pump and which is in the liner - ( 7) controls provided longitudinal slots which are connected to the displacements by channels (ii or 12). Cited publications: German patent specifications No. 302 152, 66a 562.
DESCH8523A 1952-01-12 1952-01-12 Auxiliary suction slide for piston pumps with slide control Expired DE935595C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH8523A DE935595C (en) 1952-01-12 1952-01-12 Auxiliary suction slide for piston pumps with slide control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH8523A DE935595C (en) 1952-01-12 1952-01-12 Auxiliary suction slide for piston pumps with slide control

Publications (1)

Publication Number Publication Date
DE935595C true DE935595C (en) 1955-11-24

Family

ID=7425835

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH8523A Expired DE935595C (en) 1952-01-12 1952-01-12 Auxiliary suction slide for piston pumps with slide control

Country Status (1)

Country Link
DE (1) DE935595C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302152C (en) *
DE662562C (en) * 1938-07-16 Kurt Schoene Dr Ing Liquid pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302152C (en) *
DE662562C (en) * 1938-07-16 Kurt Schoene Dr Ing Liquid pump

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