DE463521C - Rotary lobe pump with piston drum and slide piston rotating eccentrically in the housing - Google Patents
Rotary lobe pump with piston drum and slide piston rotating eccentrically in the housingInfo
- Publication number
- DE463521C DE463521C DEA47352D DEA0047352D DE463521C DE 463521 C DE463521 C DE 463521C DE A47352 D DEA47352 D DE A47352D DE A0047352 D DEA0047352 D DE A0047352D DE 463521 C DE463521 C DE 463521C
- Authority
- DE
- Germany
- Prior art keywords
- piston
- housing
- drum
- rotary lobe
- slide
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
Drehkolbenpumpe mit exzentrisch im Gehäuse umlaufender Kolbentrommel und Schieberkolben Drehkolbenpumpen mit exzentrisch in einem zylindrischen Gehäuse umlaufender Kolbentrommel sind in verschiedenen Ausführungsformen bekannt. Bei sämtlichen bekannten Pumpen dieser Art sind Saugkanal und Druckkanal symmetrisch angeordnet, derart, daß beide Kanäle nicht bis zur Stelle des größten Abstandes zwischen Kolbentrommel und Gehäuse reichen. Der Raum zwischen Kolbentrommel und Gehäuse vom Ende des Saugkanals bis zum Totpunkt vergrößert sich allmählich in der Drehrichtung des Kolbens, um sich dann bis zum Beginn des Druckkanals wieder zu verengen. Infolge dieser Raumvergrößerung kann das, angesaugte Wasser der Kolbenbewegung nicht hinreichend rasch folgen, die Wassersäule reißt manchmal ab, es entstehen Wasserschläge, welche ein einwandfreies Arbeiten der Pumpe, insbesondere bei großer Saughöhe und hohen Drehzahlen, unmöglich machen.Rotary lobe pump with piston drum rotating eccentrically in the housing and slide piston rotary lobe pumps with eccentric in a cylindrical housing rotating piston drum are known in various embodiments. With all of them known pumps of this type are symmetrically arranged suction channel and pressure channel, in such a way that the two channels do not extend to the point of the greatest distance between the piston drum and housing range. The space between the piston barrel and the housing from the end of the suction channel up to the dead center gradually increases in the direction of rotation of the piston then to narrow again up to the beginning of the pressure channel. As a result of this increase in space the sucked in water cannot follow the piston movement sufficiently quickly The water column sometimes breaks off, and there are water hammers, which is a perfect one It is impossible for the pump to work, especially at high suction lifts and high speeds do.
Dieser Mißstand der bekannten Pumpen wird gemäß vorliegender Erfindung dadurch beseitigt, daß Saug- und Druckkanal nicht symmetrisch, sondern unsymmetrisch zur senkrechten Mittelebene der Pumpe angeordnet sind, derart, daß der Saugkanal an der Stelle des größten Abstandes zwischenKolbentrommel und Gehäuse endet und der Druckkanal hinter dieser Stelle in einer Entfernung vom Saugkanal beginnt, welche dem Abstand zweier Kolbenschieber voneinander einschließlich einer geringen Überdeckung entspricht.This drawback of the known pumps is made in accordance with the present invention this eliminates the fact that the suction and pressure channels are not symmetrical, but asymmetrical are arranged to the vertical center plane of the pump, such that the suction channel ends at the point of greatest distance between piston drum and housing and the pressure channel behind this point at a distance from the suction channel begins, which the distance between two piston slides including a slight overlap is equivalent to.
Infolge dieser Anordnung von Saug- und Druckkanal ist der Raum zwischen Kolbentrommel und Gehäuse vom Ende des Saugkanals bis zum Anfang des Druckkanals keilförmig gestaltet, derart, daß er sich in der Drehrichtung der Kolbentrommel allmählich verengt. Diese Raumverengung hat dieselbe Wirkung wie eine Verzögerung der Kolbentrommelbewegung, so daß die obenerwähnten Wasserschläge nicht mehr auftreten. Außerdem ist der Eintritt für das angesaugte Wasser in den größten Querschnitt des Arbeitsraumes verlegt. Auf der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel dargestellt. Es zeigt die Pumpe: Abb. i im Querschnitt und Abb. 2 im Längsschnitt.As a result of this arrangement of suction and pressure channel, the space is between Piston drum and housing from the end of the suction channel to the beginning of the pressure channel designed wedge-shaped so that it is in the direction of rotation of the piston drum gradually narrowed. This narrowing of space has the same effect as a delay the piston drum movement, so that the above-mentioned water hammer no longer occur. In addition, the inlet for the sucked water is in the largest cross section of the Relocated work space. The subject of the invention is shown in one embodiment in the drawing shown. It shows the pump: Fig. I in cross section and Fig. 2 in longitudinal section.
Die Kolbentrommel besteht aus einem zentrisch auf der Welle i sitzenden Zylinder 2 mit auf den Stirnflächen aufgeschraubten Deckeln 3 und mit sechs etwa unter q.5° gegen die Radiale geneigten Schlitzen 4. zur Aufnahme der Kolben 5.The piston drum consists of a center seated on the shaft i Cylinder 2 with lids 3 screwed onto the end faces and approximately six Slits inclined at q.5 ° against the radial line 4. to accommodate the pistons 5.
Die Kolbentrommel 2 liegt mit ihrer Welle i exzentrisch im Pumpengehäuse dessen Saug- und Druckstutzen tangential in den zylindrischen Arbeitsraum einmünden. Der Arbeitsraum der Pumpe wird seitlich durch zwei mit angedrehten Paßringen versehene Lagerdeckel '1i, 12 abgeschlossen, welche mittels Sehrauben am Gehäuse befestigt sind.The piston drum 2 lies with its shaft i eccentrically in the pump housing whose suction and pressure nozzles open tangentially into the cylindrical working space. The working space of the pump is provided with two fitted rings on the side Bearing cover '1i, 12 completed, which is attached to the housing by means of visual screws are.
Bei der Drehung der Kolbentrommel in der Pfeilrichtung a verengt sieh der Raum zwischen Kolben und Gehäuse vom Ende 13" des Saugkanals 13 bis zum Beginn iqP des Druckkanals 1q.. Das Wasser kann also gut nachströmen und es entstehen keine Wasserschläge, zumal der Wassereintritt an der Stelle .des größten Querschnittes liegt. Daher eignet sich die Pumpe insbesondere für hohe Drehzahlen (z: B. 3000 Umdrehungen pro Minute) und große Förderhöhen.When the piston drum is rotated in the direction of the arrow a, the space between the piston and the housing narrows from the end 13 "of the suction channel 13 to the beginning iqP of the pressure channel 1q The pump is therefore particularly suitable for high speeds (e.g. 3000 revolutions per minute) and high delivery heads.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA47352D DE463521C (en) | Rotary lobe pump with piston drum and slide piston rotating eccentrically in the housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA47352D DE463521C (en) | Rotary lobe pump with piston drum and slide piston rotating eccentrically in the housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE463521C true DE463521C (en) | 1928-07-30 |
Family
ID=6935744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA47352D Expired DE463521C (en) | Rotary lobe pump with piston drum and slide piston rotating eccentrically in the housing |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE463521C (en) |
-
0
- DE DEA47352D patent/DE463521C/en not_active Expired
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