EP1359322A2 - Vorrichtung zur Ansteuerung von Saugventilen - Google Patents
Vorrichtung zur Ansteuerung von Saugventilen Download PDFInfo
- Publication number
- EP1359322A2 EP1359322A2 EP03009400A EP03009400A EP1359322A2 EP 1359322 A2 EP1359322 A2 EP 1359322A2 EP 03009400 A EP03009400 A EP 03009400A EP 03009400 A EP03009400 A EP 03009400A EP 1359322 A2 EP1359322 A2 EP 1359322A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- valve
- piston
- pressure
- switching element
- 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.)
- Withdrawn
Links
Images
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
- F04B49/243—Bypassing by keeping open the inlet valve
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Definitions
- the invention relates to a device for controlling Suction valves of high pressure piston pumps, where the suction valves each coaxial with the pressure valves and the pump pistons are arranged. It is with high pressure piston pumps with several cylinders already known, depending on the pump can be switched off from the operating and operating conditions of the pump to make, with only individual cylinders switched off can be.
- DE 30 28 396 A1 describes, for example High pressure piston pumps where the suction valves are operated under positive control. With some of the described High-pressure piston pumps are the stroke movement of the closing element of the suction valve each perpendicular to the direction of movement of the associated pump piston, but this is the case with high-pressure piston pumps, who work with pressures over 400 bar Breaks in the pump body can result.
- the present invention has for its object a Device for switching the suction valves of high pressure piston pumps to propose with central valve arrangement that simple under construction and therefore not prone to wear.
- the task is carried out with a device for controlling Suction valves of high pressure piston pumps, where the suction valve arranged coaxially to the pressure valve and the pump piston is solved according to the invention in that it is a switching element has the closing member of the suction valve under a point or at a right angle to the stroke direction of the closing element applied.
- This type of actuation of the suction valves avoids the use of lever mechanisms with wear-prone Joints.
- the inclined guidance of the switching element enables a linear actuation of the switching element, the Type of drive can be selected differently.
- the switching element of the Ram of a piston of a hydraulic or pneumatic Switch cylinder The actuation mechanism is not through the pressure chamber, so that there are no sealing problems occur.
- the closing elements of the suction valves are usually included a conical area. With such an arrangement it is advantageous if the switching element at least approximately perpendicular to the conical surface of the conical Area acts, since then the power transmission to the Closing member is optimal.
- the device according to the invention can control the Cause suction valves.
- the shift cylinder one operated depending on the movement of the pump piston Control valve to be assigned, whereby the switching element Depending on the position of the pump piston, the suction valve opens causes.
- the switching element can counter the closing element open the force of a return spring.
- the device can also operate the suction valves in both directions depending on the signals of a sensor device that the Flow rate and / or the pressure conditions in the pressure chamber recorded, actively control.
- the pump can then be used as a metering pump deploy.
- the control can both the opening time as well as the opening width of the valves. This allows you to determine which during the suction phase Amount of the medium is sucked. During the printing phase too much aspirated medium can be partially returned become. If a large amount is to be funded, then can the valves only after a certain number of piston strokes be opened.
- FIG. 1 shows a pump body 10 in which a valve seat 11 is arranged.
- a closing member 12 of a suction valve 13 is arranged on one side of the valve seat 11 .
- a closing member 12 of a suction valve 13 is arranged on one side of the valve seat 11 .
- Pump piston shown pump medium from a suction channel 14 be sucked in.
- a further closing member 15 of a pressure valve 16 arranged on the opposite side of the valve seat 11 . If this valve 16 is opened, it can the pump medium through the pump piston into a pressure channel 17 be pressed.
- Closing member 12 of the suction valve 13 with the in Fig. 2 mechanism shown against the force of a return spring 18 can be opened.
- the pump piston then presses the medium sucked out of the suction channel 14 back into the channel 14, so that no delivery by the pump piston of pressure medium takes place.
- the closing member 15 of the Pressure valve 16 is counter to the force of a return spring 19 openable.
- Fig. 2 now shows how the suction valve 13 is positively controlled can be.
- the closing member 12 Ram 20 of a piston 21 of a shift cylinder 22 acts on the closing member 12 Ram 20 of a piston 21 of a shift cylinder 22.
- the Locking member 12 has a conical area 12.1 on, and the plunger 20 engages approximately perpendicular to the surface of the cone of area 12.1 on this.
- This acute-angled one Guide of the plunger 20 to the stroke direction 23 of the closing member 12 enables operation despite the limited space of the closing member 12 while avoiding lever and Joint mechanisms.
- the piston 21 with the plunger 20 is opposed the force of a return spring 24 can be actuated, so that in Rest position of the plunger 20, the closing member 12 is always closed is.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
- Fig. 1
- einen Querschnitt durch eine Saug- und Druckventilanordnung einer Hochdruck-Kolbenpumpe;
- Fig. 2
- eine Schnittdarstellung eines Ausschnitts der Saugventil- und Druckventilanordnung aus Fig. 1 mit einem Betätigungsmechanismus für das Saugventil.
Claims (9)
- Vorrichtung zur Ansteuerung von Saugventilen (13) von Hochdruck-Kolbenpumpen, bei denen das Saugventil (13) koaxial zum Druckventil (16) und zum Pumpenkolben angeordnet ist, dadurch gekennzeichnet, dass sie ein Schaltglied (20) aufweist, das das Schließglied (12) des Saugventils (13) unter einem spitzen oder einem rechten Winkel zur Hubrichtung des Schließglieds (12) beaufschlagt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Schließglied (12) einen kegelförmigen Bereich (12.1) aufweist und das Schaltglied (20) zumindest annähernd senkrecht auf die Kegelmantelfläche des kegelförmigen Bereichs (12.1) einwirkt.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Schaltglied (20) der Stößel eines Kolbens (21) eines hydraulischen oder pneumatischen Schaltzylinders (22) ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie eine Zwangssteuerung der Saugventile (13) bewirkt.
- Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass dem Schaltzylinder (20) ein in Abhängigkeit von der Pumpenkolbenbewegung betätigtes Steuerventil zugeordnet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Schaltglied (20) das Schließglied (12) entgegen der Kraft einer Rückstellfeder (18) öffnet.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie die Saugventile (13) in beiden Richtungen in Abhängigkeit der Signale eine Sensoreinrichtung, die die Durchflussmenge und/oder die Druckverhältnisse im Druckraum erfasst, aktiv ansteuert.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass sie den Öffnungszeitpunkt und die Öffnungsweite der Saugventile (13) steuert.
- Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass sie während der Druckphase einen Teil des angesaugten Mediums wieder zurückleitet wird, sofern die angesaugte Menge des Mediums die benötigte Menge übersteigt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20207106U | 2002-05-04 | ||
DE20207106U DE20207106U1 (de) | 2002-05-04 | 2002-05-04 | Vorrichtung zur Ansteuerung von Saugventilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1359322A2 true EP1359322A2 (de) | 2003-11-05 |
EP1359322A3 EP1359322A3 (de) | 2003-12-17 |
Family
ID=7970844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03009400A Withdrawn EP1359322A3 (de) | 2002-05-04 | 2003-04-25 | Vorrichtung zur Ansteuerung von Saugventilen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1359322A3 (de) |
DE (1) | DE20207106U1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008020970A1 (de) | 2008-04-25 | 2009-10-29 | Uraca Pumpenfabrik Gmbh & Co Kg | Plungerpumpe mit Saugventilauslösung |
DE102009012894A1 (de) * | 2009-03-12 | 2010-09-16 | Marco Systemanalyse Und Entwicklung Gmbh | Hochdruckpumpe |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3811801A (en) * | 1972-05-30 | 1974-05-21 | Ingersoll Rand Co | Multi-plunger reciprocating pump |
EP1162365A1 (de) * | 1999-02-09 | 2001-12-12 | Hitachi, Ltd. | Hochdruck-brennstoffpumpe für eine brennkraftmaschine |
-
2002
- 2002-05-04 DE DE20207106U patent/DE20207106U1/de not_active Expired - Lifetime
-
2003
- 2003-04-25 EP EP03009400A patent/EP1359322A3/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3811801A (en) * | 1972-05-30 | 1974-05-21 | Ingersoll Rand Co | Multi-plunger reciprocating pump |
EP1162365A1 (de) * | 1999-02-09 | 2001-12-12 | Hitachi, Ltd. | Hochdruck-brennstoffpumpe für eine brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE20207106U1 (de) | 2002-08-22 |
EP1359322A3 (de) | 2003-12-17 |
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