DE19546299A1 - Double piston pump for particle analyzer - Google Patents
Double piston pump for particle analyzerInfo
- Publication number
- DE19546299A1 DE19546299A1 DE19546299A DE19546299A DE19546299A1 DE 19546299 A1 DE19546299 A1 DE 19546299A1 DE 19546299 A DE19546299 A DE 19546299A DE 19546299 A DE19546299 A DE 19546299A DE 19546299 A1 DE19546299 A1 DE 19546299A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- piston
- control
- valve
- liquid
- 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.)
- Granted
Links
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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/047—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
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- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
- F04B7/0023—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having a rotating movement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
- Reciprocating Pumps (AREA)
- Steroid Compounds (AREA)
Abstract
Description
Mit klassischen Pumpen (Zahnradpumpen, Schlauchpumpen, Kolbenpumpen usw.) ist eine derartige Förderung nur mit sehr hohem technischen Aufwand möglich. Große Totvolumen, Partikelabriebe im Pumpensystem, und zusätzlich benötigte teure Meßsysteme zur Durchflußregulierung und zur Volumenkontrolle müssen beim Einsatz der klassischen Systeme in Kauf genommen werden. Häufig können die Pumpensysteme nicht gegen Eingangsdrücke arbeiten oder sind nicht in der Lage viskose Flüssigkeiten anzusaugen. Zahnradpumpen und Schlauchpumpen verfälschen das Meßergebnis einer Partikelanalyse, da die Partikel von der Pumpenmechanik zerkleinert werden. Zudem verschleißen Zahnradpumpen bei der Förderung von partikelbehafteten Flüssigkeiten.With classic pumps (gear pumps, peristaltic pumps, piston pumps, etc.) Such funding is only possible with very high technical effort. Large dead volume, particle abrasion in the pump system, and additionally required expensive measuring systems for flow regulation and for volume control must be with Use of the classic systems can be accepted. Often they can Pump systems do not work or are unable to work against inlet pressures suck in viscous liquids. Adulterate gear pumps and peristaltic pumps the measurement result of a particle analysis, since the particles from the pump mechanics be crushed. Gear pumps also wear out when pumping liquids containing particles.
Fig. 1 zeigt einen Schnitt durch die Pumpe. Die beiden Kolben (1, 2) werden von dem Getriebemotor mit Linearantrieb (10) hin und her bewegt. Die Kolben werden nach dem Starten in eine Endlage gebracht (Referenz). Bevor die Bewegungsrichtung der Kolben geändert wird, muß das Stellventil (4) von der Steuerung in die richtige Position (S1, S2) gebracht werden. Während eine Kammer (6) die Flüssigkeit durch den Einsaugflansch (5) ansaugt, wird aus der zweiten Kammer (7) die Flüssigkeit über den Auslaß (8) aus der Pumpe gedrückt. Die Kolben werden in diesem Fall beide nach links bewegt. Sobald sich das Kolbenpaar in die linke Endlage bewegt hat, wird das Steilventil (4) umgestellt und das Kolbenpaar bewegt sich wieder nach rechts. Je nach geforderter Fördermenge werden von der Pumpe entsprechend viele Zyklen ausgeführt. Das Volumen in einer Kammer entspricht bei der Musterpumpe einem Volumen von 10 ml. Je nach Einsatzgebiet der Pumpe kann das Kammervolumen jedoch zwischen wenigen µl und mehreren Litern Rauminhalt ausgeführt werden. Fig. 1 shows a section through the pump. The two pistons ( 1 , 2 ) are moved back and forth by the gear motor with linear drive ( 10 ). After starting, the pistons are brought into an end position (reference). Before the direction of movement of the pistons is changed, the control valve ( 4 ) must be brought into the correct position (S1, S2) by the control. While one chamber ( 6 ) sucks the liquid through the intake flange ( 5 ), the liquid is pressed out of the pump via the outlet ( 8 ) from the second chamber ( 7 ). In this case, the pistons are both moved to the left. As soon as the pair of pistons has moved to the left end position, the steep valve ( 4 ) is switched over and the pair of pistons moves to the right again. Depending on the required flow rate, the pump executes a corresponding number of cycles. The volume in a chamber corresponds to a volume of 10 ml with the sample pump. Depending on the area of application of the pump, the chamber volume can be between a few µl and several liters.
Fig. 2 zeigt wie das Stellventil (4) aussehen kann. Das Stellventil (4) wird von einem Getriebemotor (11) jeweils um 180° gedreht. Beide Motoren (Motor für Stellventil, Motor für Linearbewegung) werden von einer Elektronikkarte gesteuert. Die Endlage wird mit Hilfe von Endschaltern erfaßt. Ist eine feine Flüssigkeitsmengendosierung erforderlich, wird mit einem Schrittmotor (10) oder mit einem Lineargeber zur Erfassung der Kolbenposition gearbeitet. Fig. 2 shows how the control valve ( 4 ) can look. The control valve ( 4 ) is rotated by 180 ° by a geared motor ( 11 ). Both motors (motor for control valve, motor for linear movement) are controlled by an electronic card. The end position is detected with the help of limit switches. If a fine amount of liquid is required, a step motor ( 10 ) or a linear encoder is used to record the piston position.
Fig. 3 zeigt das Verbindungselement (9) zur Kopplung der Kolben (1, 2). Kolben 2 ist mit der Gewindespindel (15) fest verbunden. Die Gewindespindel und das Verbindungsgestell (9) wird vom Linearantrieb (10) hin und her bewegt. Kolben 1 ist ebenfalls mit dem Verbindungselement fest verbunden. Die Pumpe wird am Pumpengehäuse (3) mit Ansaugflansch und Ausgußflansch in ein Gehäuse eingebaut bzw. aufgehängt. Fig. 3 shows the connecting element ( 9 ) for coupling the pistons ( 1 , 2 ). Piston 2 is firmly connected to the threaded spindle ( 15 ). The threaded spindle and the connecting frame ( 9 ) are moved back and forth by the linear drive ( 10 ). Piston 1 is also firmly connected to the connecting element. The pump is installed or suspended in a housing on the pump housing ( 3 ) with suction flange and discharge flange.
Fig. 4 zeigt die Integration der Pumpe (12) in ein Flüssigkeitssystem. Die Pumpe fördert die gewünschte Menge durch den Sensor (14). Mit der Ansaugleitung A wird die Probe aus einem Behälter oder aus einem Drucksystem gefördert. Durch das Bypassventil (13) wird erreicht, daß bei hohen Eingangsdrücken eine Druck kompensation stattfindet. Der Druck (p1, p2) auf beide Kolbenflächen ist dabei nahezu gleich groß. Der Linearantrieb (10) muß somit lediglich gegen den Differenzdruck (p1-p2) arbeiten. Fig. 4 shows the integration of the pump ( 12 ) in a liquid system. The pump delivers the desired amount through the sensor ( 14 ). With the suction line A the sample is conveyed from a container or from a pressure system. The bypass valve ( 13 ) ensures that pressure compensation takes place at high inlet pressures. The pressure (p1, p2) on both piston surfaces is almost the same. The linear drive ( 10 ) thus only has to work against the differential pressure (p1-p2).
Fig. 5 zeigt die Pumpe bzw. Dosiereinheit (12) mit dem Partikelsensor (14) und einem Stromregelventil (16). Die Außenkammern des Pumpensystems sind über ein Stromregelventil miteinander verbunden. Der sogenannte Steuerkreislauf wird mit einem flüssigen oder gasförmigen Medium befüllt. Das Meßmedium wird dem System unter Druck an Punkt A zugeführt. Die Probennahme erfolgt aus einer Druckleitung. Flaschenproben können mit Hilfe von Preßluft unter Druck gesetzt werden und so dem System zugeführt werden. Fig. 5 shows the pump or metering unit ( 12 ) with the particle sensor ( 14 ) and a flow control valve ( 16 ). The outer chambers of the pump system are connected to each other via a flow control valve. The so-called control circuit is filled with a liquid or gaseous medium. The measuring medium is fed to the system under pressure at point A. Sampling takes place from a pressure line. Bottle samples can be pressurized using compressed air and fed to the system.
Die Durchflußgeschwindigkeit durch den Sensor läßt sich mit Hilfe dieses Steuerkreislaufs durch das Stromregelventil unabhängig von den Eigenschaften des zu messenden Mediums steuern.The flow rate through the sensor can be with the help of this Control circuit through the flow control valve regardless of the properties of the control the medium to be measured.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19546299A DE19546299B4 (en) | 1994-12-31 | 1995-12-12 | Double piston pump |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9420962U DE9420962U1 (en) | 1994-12-31 | 1994-12-31 | Double piston pump |
DEG9420962.6 | 1994-12-31 | ||
DE19546299A DE19546299B4 (en) | 1994-12-31 | 1995-12-12 | Double piston pump |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19546299A1 true DE19546299A1 (en) | 1996-07-04 |
DE19546299B4 DE19546299B4 (en) | 2011-11-03 |
Family
ID=6918096
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9420962U Expired - Lifetime DE9420962U1 (en) | 1994-12-31 | 1994-12-31 | Double piston pump |
DE19546299A Expired - Lifetime DE19546299B4 (en) | 1994-12-31 | 1995-12-12 | Double piston pump |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9420962U Expired - Lifetime DE9420962U1 (en) | 1994-12-31 | 1994-12-31 | Double piston pump |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE9420962U1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135495A1 (en) * | 2001-07-20 | 2003-02-06 | Micro Mechatronic Technologies | metering |
DE102005059564A1 (en) * | 2005-12-13 | 2007-06-14 | Brueninghaus Hydromatik Gmbh | Device and method for condition monitoring in hydrostatic displacement units |
US8082125B2 (en) | 2005-12-13 | 2011-12-20 | Brueninghaus Hydromatik Gmbh | Apparatus and method for the condition-dependent maintenance of hydrostatic displacement units |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE152965C (en) * | ||||
US3695788A (en) * | 1970-01-09 | 1972-10-03 | Bernard A Loomans | Apparatus for pumping fluids |
US5564912A (en) * | 1995-09-25 | 1996-10-15 | Peck; William E. | Water driven pump |
-
1994
- 1994-12-31 DE DE9420962U patent/DE9420962U1/en not_active Expired - Lifetime
-
1995
- 1995-12-12 DE DE19546299A patent/DE19546299B4/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135495A1 (en) * | 2001-07-20 | 2003-02-06 | Micro Mechatronic Technologies | metering |
DE102005059564A1 (en) * | 2005-12-13 | 2007-06-14 | Brueninghaus Hydromatik Gmbh | Device and method for condition monitoring in hydrostatic displacement units |
US7860683B2 (en) | 2005-12-13 | 2010-12-28 | Brueninghaus Hydromatik Gmbh | Device and method for state monitoring in hydrostatic displacement units |
US8082125B2 (en) | 2005-12-13 | 2011-12-20 | Brueninghaus Hydromatik Gmbh | Apparatus and method for the condition-dependent maintenance of hydrostatic displacement units |
Also Published As
Publication number | Publication date |
---|---|
DE19546299B4 (en) | 2011-11-03 |
DE9420962U1 (en) | 1995-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: KLOTZ, MARKUS, 75378 BAD LIEBENZELL, DE |
|
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120204 |
|
R071 | Expiry of right |