DE699525C - Overpressure piston valve - Google Patents
Overpressure piston valveInfo
- Publication number
- DE699525C DE699525C DE1937E0050512 DEE0050512D DE699525C DE 699525 C DE699525 C DE 699525C DE 1937E0050512 DE1937E0050512 DE 1937E0050512 DE E0050512 D DEE0050512 D DE E0050512D DE 699525 C DE699525 C DE 699525C
- Authority
- DE
- Germany
- Prior art keywords
- overpressure
- piston valve
- piston
- overpressure piston
- valve
- 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
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
Description
Überdruckkolbenschieber Die Erfindung bezieht sich auf einen übexdruckkolbenschieber; insbesondere für Pumpen und Kompressoren. Stehen, bei solchen nur geringe Druckunterschiede zum Bewegen des Kolbens zur Verfügung, so kann der Kolben leicht hängenbleiben. Dies hat aber insbesondere bei Kraftstofförderpumpen die große Gefahr, daß de Maschine nicht die nötige Brennstoffmenge erhält und stehenbleibt.Overpressure piston valve The invention relates to an overpressure piston valve; especially for pumps and compressors. Stand, with such only slight pressure differences available to move the piston, the piston can easily get stuck. However, especially in the case of fuel pumps, this has the great risk that the machine does not receive the necessary amount of fuel and stops.
Um, diesen Nachteil zu vermeiden, ist erfindungsgemäß der Kolben mit Führungsmitteln versehen, die ihm während der axialen Bewegung zugleich eine drehende Bewegung erteilen.In order to avoid this disadvantage, the piston is according to the invention with Provided guide means that give him a rotating at the same time during the axial movement Grant movement.
Solche Führungsmittel sind an sich bekannt. Bekannt ist es auch, einen Kolbenschieber in ständig drehender Bewegung zu halten. Derartige Anordnungen haben aber den Nachteil, däß zur Erzielung der drehenden Bewegung eine besondere Antriebsvorrichtung erforderlich ist 'und daß sie stark dem Verschleiß unterworfen sind.Such guide means are known per se. It is also known to have one To keep the piston valve in constantly rotating motion. Have such arrangements but the disadvantage that a special drive device to achieve the rotating movement is required 'and that they are highly subject to wear.
Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung an einer doppeltwirkenden Zahnradpumpe dargestellt. . Dabei zeigt Abb. i :einen Querschnitt nach der Linie A-B der Abb: z und Abb. z einen .Längsschnitt nach der Linie C-b, der Abb. I.In the drawing, an embodiment of the invention is on a double-acting gear pump shown. . Fig. I shows a cross section according to the line A-B of fig: z and fig. z a longitudinal section according to the line C-b, Fig. I.
Der in die Führunga eingebaute überdruckkolhenscliieb-er-b - steht mit der Druckleitung c unmittelbar in Verbindung. Am Umfang des über druckkolbenschiebers b ist eine spiralförmig verlaufende Kurve d vorgesehen, in- die der rührungszapfend',- der mit einer Leitrolle versehen sein kann, eingreift. Bei eintretendem überdruck wird daher der überdruckkolbenschieber b nicht Aur achsrecht bewegt, sondern auch gleichzeitig um seine Achse gedreht. Der Überdruck -ird durch den überläufkanal e abgeleitet, sobald der Kolbenschieber diesen freigegeben hat. Der Überlaufkanal e kann als Ringkanal ausgebildet sein. Er kann mit dem Zylinderraum durch spiralförmig verlaufende und entsprechend versetzte Schlitze f, durch die der überlauf erfolgt, verbunden . sein. Im letzteren Falle wird eine bessere Führung des überdruckkolbenschieb:ers erreicht, so daß derselbe beim öffnen nicht einseitig durch Strömungen beesnflußt werden kann. An Stelle der Kurve !d und des F"uhrungsstiftes d' kann der übtrdruckkolb@enschieber auch mit Steilgewinde g versehen werden.The overpressure piston valve-er-b - built into the guide a - is standing with the pressure line c directly in connection. At the circumference of the over pressure piston valve b a spiral curve d is provided, in which the tapping ', - which can be provided with a guide roller engages. When overpressure occurs Therefore, the overpressure piston valve b is not moved axially but also rotated around its axis at the same time. The overpressure is generated through the overflow channel e derived as soon as the piston valve has released it. The overflow channel e can be designed as an annular channel. It can spiral through with the cylinder space running and correspondingly offset slots f through which the overflow occurs, tied together . be. In the latter case, better guidance of the overpressure piston slide: ers reached, so that it is not unilaterally affected by currents when it is opened can be. Instead of the curve! D and the guide pin d ', the overpressure piston valve can also be provided with high helix thread g.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937E0050512 DE699525C (en) | 1937-12-09 | 1937-12-09 | Overpressure piston valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937E0050512 DE699525C (en) | 1937-12-09 | 1937-12-09 | Overpressure piston valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE699525C true DE699525C (en) | 1940-11-30 |
Family
ID=7081173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937E0050512 Expired DE699525C (en) | 1937-12-09 | 1937-12-09 | Overpressure piston valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE699525C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE935910C (en) * | 1952-12-24 | 1955-12-01 | Teves Kg Alfred | Oil separator with float control, especially for refrigeration machines |
-
1937
- 1937-12-09 DE DE1937E0050512 patent/DE699525C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE935910C (en) * | 1952-12-24 | 1955-12-01 | Teves Kg Alfred | Oil separator with float control, especially for refrigeration machines |
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