DE293005C - - Google Patents
Info
- Publication number
- DE293005C DE293005C DENDAT293005D DE293005DA DE293005C DE 293005 C DE293005 C DE 293005C DE NDAT293005 D DENDAT293005 D DE NDAT293005D DE 293005D A DE293005D A DE 293005DA DE 293005 C DE293005 C DE 293005C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- pressure
- control edge
- pressurized water
- pump
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 2
- 230000002688 persistence Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, 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
- F04B49/22—Control, 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 means of valves
- F04B49/24—Bypassing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
- F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
- F04B11/0025—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring the spring fluid being in direct contact with the pumped fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
— JlH 293005■:-■■■■" KLASSE 59«. GRUPPE- JlH 293005 ■: - ■■■■ " CLASS 59 «. GROUP
GEORG DUFFING in BERLIN-SÜDENDE.GEORG DUFFING in BERLIN-SÜDENDE.
Patentiert im Deutschen Reiche vom 2. Februar 1915 ab.Patented in the German Empire on February 2, 1915.
Die Betriebsgeschwindigkeit von Pumpen wird bisher bekanntlich begrenzt durch die Stoßerscheinungen, die beim Schluß der Ventile, insbesondere des Saugventiles,. auftreten. Dena das Saugventil kann sich bei der gebräuchlichen Ausführung von Pumpen erst längere Zeit nach Beginn des Druckhubes schließen, worauf alsdann erst nach stoßartigem Druckanstieg das Druckventil sich öffnet.The operating speed of pumps is known to be limited by the Shock phenomena that occur when the valves, in particular the suction valve, are closed. appear. Dena the suction valve can only be used in the common design of pumps close a long time after the start of the pressure stroke, whereupon only after a sudden Pressure increase the pressure valve opens.
ίο Man hat nun zwar bereits vorgeschlagen, diesen Nachteil dadurch zu beseitigen, daß man am Ende des Saughubes, bevor noch der Kolben seinen Druckhub beginnt, Druckwasser in den Pumpenraum einläßt. Zu diesem Zwecke ließ man beispielsweise den Kolben gegen das Saughubende durch Überschleifung einer Steuerkante einen Kanal freilegen, durch welchen unter Vermittelung .eines selbsttätigen Äusgleichventiles das Druckwasser in den Pum-ίο It has already been suggested that to eliminate this disadvantage that at the end of the suction stroke before the Piston begins its pressure stroke, pressurized water lets into the pump chamber. To this For example, the piston was left against the end of the suction stroke by grinding a control edge expose a channel through which through mediation .eines an automatic Equalizing valve, the pressurized water in the pump
ao penraum einströmte. Dieses Hilfsventil war hierbei aber zwischen Steuerkante und Pumpenraum angeordnet, was zur Folge hatte, daß der beabsichtigte Erfolg infolge der Trägheitserscheinungen der Ventil- und Flüssig-' keitsmasse nicht auftreten konnte.ao pen room flowed in. This auxiliary valve was between the control edge and the pump room arranged, which had the consequence that the intended success as a result of the indolence the valve and liquid 'keitsgut could not occur.
Bei der vorliegenden Erfindung ist dieser Nachteil vermieden, und zwar dadurch, daß das selbsttätige Ausgleichventil im festen Pumpengehäuse zwischen Steuerkante und Druck-In the present invention, this disadvantage is avoided by the fact that the automatic equalizing valve in the fixed pump housing between the control edge and the pressure
raum angeordnet äst. Da bei dieser Anordnung die erwähnten Bjeharrungserscheinungen nicht auftreten können, so ist es ohne weiteres möglich, dem Ventil diejenige Größe und Masse zu geben, wie es zur Erreichung des Druckausgleiches, der in sehr kurzer Zeit vor sich gehen muß, notwendig ist.space arranged aest. As with this arrangement the above-mentioned persistence phenomena cannot occur, so it is without further ado possible to give the valve the size and mass required to achieve the Pressure equalization, which must take place in a very short time, is necessary.
In der Zeichnung ist die neue Pumpe in einer Aüsführungsform veranschaulicht. Ein Plungerkolben e bewegt sich innerhalb des Arbeitsraumes f der Pumpe, welche das Saugventil g und das Druckventil h besitzt. Kurz vor Ende des Saughubes überläuft der Kolben die Steuerkante m. Zwischen dieser Steuerkante und dem Druckraum i der Pumpe ist das Ausgleichventil Z angeordnet. Gegen Ende des Saughubes also wird dieses Ventil durch den im Räume i herrschenden Flüssigkeitsdruck abwärts gedrückt und hierdurch Druckwasser in den Arbeitsraum f eingelassen. Nahe bei Beginn des Druckhubes ist der Druckausgleich erfolgt, so daß sich das Ausgleich ventil I unter der Kraft der Feder wieder selbsttätig schließt. Das genannte Ventil kann so stark belastet sein, daß sein Schluß annähernd gleichzeitig mit dem Schluß des Saugventiles a erfolgt.In the drawing, the new pump is illustrated in one embodiment. A plunger piston e moves within the working space f of the pump, which has the suction valve g and the pressure valve h . Shortly before the end of the suction stroke, the piston passes over the control edge m. The equalizing valve Z is arranged between this control edge and the pressure chamber i of the pump. Towards the end of the suction stroke, this valve is pressed downwards by the liquid pressure prevailing in space i , and pressurized water is thereby admitted into working space f. The pressure equalization has taken place near the start of the pressure stroke, so that the equalization valve I closes again automatically under the force of the spring. Said valve can be so heavily loaded that its closure takes place almost simultaneously with the closure of the suction valve a.
Anstatt mit dem Druckraum i der Pumpe könnte die Verbindung aiii Saughubende gegebenenfalls auch mit einer besonderen Druckwasserquelle erfolgen.Instead of the pressure chamber i of the pump, the connection aiii suction stroke end could possibly also be made with a special pressurized water source.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE293005C true DE293005C (en) |
Family
ID=547718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT293005D Active DE293005C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE293005C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000001947A2 (en) * | 1998-07-07 | 2000-01-13 | The University Of Reading | Pump mechanism |
-
0
- DE DENDAT293005D patent/DE293005C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000001947A2 (en) * | 1998-07-07 | 2000-01-13 | The University Of Reading | Pump mechanism |
WO2000001947A3 (en) * | 1998-07-07 | 2002-09-19 | Univ Reading | Pump mechanism |
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