EP1416158B1 - Pump with filter - Google Patents
Pump with filter Download PDFInfo
- Publication number
- EP1416158B1 EP1416158B1 EP20030103981 EP03103981A EP1416158B1 EP 1416158 B1 EP1416158 B1 EP 1416158B1 EP 20030103981 EP20030103981 EP 20030103981 EP 03103981 A EP03103981 A EP 03103981A EP 1416158 B1 EP1416158 B1 EP 1416158B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- pumping means
- chamber
- tappet
- pump according
- 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 - Lifetime
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
Definitions
- the invention refers to a, preferably designed as a well water pump with a reciprocating pumping means and a filter.
- Pseudo-continuous pumps take over in a first cycle over resiliently biased inlet valve, a fluid in a pumping chamber to this Finally, to compress in a second cycle and an exhaust valve issue.
- Bohrwasserpumpen take heavily mixed with solids Drilling water at low pressure and provide at separate outputs both filtered Drilling water as well as solids concentrated drilling water at higher pressures to disposal. Due to the strong solid content in the drilling water is a regular Backwash the filter required to avoid permanent clogging.
- the object of the invention is in the realization of a filtering pump for strong with Solids added fluids. Another aspect is the reliable sealing of the Pumping chamber.
- a pump for solids contaminated liquids has one Pump drive at least one in a pumping chamber with an inlet valve, a filter and an outlet valve fluidly reciprocable pumping means, which with a ram is drivingly connected, wherein the plunger movable radially back and forth stored and in a circumferentially rotatable about an axis pump drive in a circumferentially variable guide contour is mounted radially form-fitting.
- the plunger in the guide contour is positively guided over a roller bearing, whereby a sliding friction is avoided.
- the pumping means on an elastically deformable pumping membrane, which the Pumping chamber slidable and flow-tight partially limited, creating a by the abrasive solids disadvantageous sliding movement of the pumping means is avoidable.
- the pumping chamber is a concentrate outlet via a concentrate outlet valve associated, which further advantageously controlled by a radial stop of the ram is, whereby a discharge of the solids-enriched concentrate is possible.
- the pumping chamber can be flown through a spring-biased backflushing chamber associated, which in a relaxation of the pumping chamber, a backwash the filter causes.
- a pump drive 3 in one circumferentially radially variable guide contour 11 via a roller bearing 12 radially is mounted positively.
- the pumping chamber 4 is a concentrate outlet 13 via a Concentrate outlet valve 14 associated, which by a radial stop 15 of the Stössels 10 is controllable.
- the pumping chamber 4 is a spring-biased Assigned backwash chamber 16 throughflow.
- the pumping membrane 9 is moved radially outward, resulting in the pumping chamber 4 via line 17 with liquid 2 fills. At top dead center of this Movement closes the inlet valve 5.
- the Pumping means 8 slowly moves radially inwardly, whereby the liquid 2 through the filter. 6 flows and fills the backwashing 16 against the bias.
- the outlet valve 7 opens and that of solids cleaned liquid 2 is with a pumping effective residual pressure via the line 18th issued.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung bezeichnet eine, vorzugsweise als Bohrwasserpumpe ausgeführte, Pumpe mit einem hin- und herbewegten Pumpmittel und einem Filter.The invention refers to a, preferably designed as a well water pump with a reciprocating pumping means and a filter.
Pseudokontinuierlich arbeitende Pumpen nehmen in einem ersten Arbeitstakt über ein federnd vorgespanntes Einlassventil ein Fluid in einer Pumpkammer auf, um dieses schliesslich in einem zweiten Arbeitstakt zu verdichten und über ein Auslassventil auszugeben.Pseudo-continuous pumps take over in a first cycle over resiliently biased inlet valve, a fluid in a pumping chamber to this Finally, to compress in a second cycle and an exhaust valve issue.
Nach der DE20110224U1 nehmen Bohrwasserpumpen stark mit Feststoffen versetztes Bohrwasser bei niedrigem Druck auf und stellen an separaten Ausgängen sowohl gefiltertes Bohrwasser als auch mit Feststoffen aufkonzentriertes Bohrwasser unter höheren Drücken zur Verfügung. Durch den starken Feststoffanteil im Bohrwasser ist eine regelmässige Rückspülung des Filters erforderlich, um eine dauerhafte Zusetzung dessen zu vermeiden.According to DE20110224U1 Bohrwasserpumpen take heavily mixed with solids Drilling water at low pressure and provide at separate outputs both filtered Drilling water as well as solids concentrated drilling water at higher pressures to disposal. Due to the strong solid content in the drilling water is a regular Backwash the filter required to avoid permanent clogging.
Nach der US3915071 ist ein, mehrfach kaskadierter, hin- und herbewegter Kolben einer Kolbenpumpe als Filterkolben aus porösem Metall ausgeführt, welcher gleichzeitig verdichtet und reinigt. Für stark verunreinigte Fluide ist eine derartige Konstruktion ungeeignet. Des Weiteren ist eine Rückspülung des Filters nicht möglich.According to US3915071 is a, multiple cascaded reciprocating piston a Piston pump designed as a filter piston made of porous metal, which compacts at the same time and cleans. For heavily contaminated fluids, such a construction is unsuitable. Of Furthermore, a backwash of the filter is not possible.
Die Aufgabe der Erfindung besteht in der Realisierung einer filternden Pumpe für stark mit Feststoffen versetzte Fluide. Ein weiterer Aspekt besteht in der zuverlässigen Abdichtung der Pumpkammer.The object of the invention is in the realization of a filtering pump for strong with Solids added fluids. Another aspect is the reliable sealing of the Pumping chamber.
Die Aufgabe wird im Wesentlichen durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of the independent claim. Advantageous developments emerge from the subclaims.
Im Wesentlichen weist eine Pumpe für mit Feststoffen verunreinigte Flüssigkeiten mit einem Pumpantrieb zumindest ein in einer Pumpkammer mit einem Einlassventil, einem Filter und einem Auslassventil strömungsdicht hin- und herbewegbares Pumpmittel auf, welches mit einem Stössel antreibbar verbunden ist, wobei der Stössel radial hin- und herbewegbar gelagert sowie in einem um eine Achse drehbaren Pumpantrieb in einer umfänglich radial veränderlichen Führungskontur radial formschlüssig gelagert ist.In essence, a pump for solids contaminated liquids has one Pump drive at least one in a pumping chamber with an inlet valve, a filter and an outlet valve fluidly reciprocable pumping means, which with a ram is drivingly connected, wherein the plunger movable radially back and forth stored and in a circumferentially rotatable about an axis pump drive in a circumferentially variable guide contour is mounted radially form-fitting.
Durch die radial formschlüssige Lagerung des das Pumpmittel antreibenden Stössels wird bei der Drehung des Pumpantriebes um die Achse eine pumpende Hin- und Herbewegung des Pumpmittels ausgeführt, welches eine Flüssigkeit durch den Filter drückt.By the radially form-fitting mounting of the pump means driving ram is during the rotation of the pump drive about the axis a pumping reciprocation the pumping means which pushes a liquid through the filter.
Vorteilhaft ist der Stössel in der Führungskontur formschlüssig über ein Rolllager geführt, wodurch eine Gleitreibung vermieden wird.Advantageously, the plunger in the guide contour is positively guided over a roller bearing, whereby a sliding friction is avoided.
Vorteilhaft weist das Pumpmittel eine elastisch deformierbare Pumpmembran auf, welche die Pumpkammer gleitbewegungsfrei sowie strömungsdicht teilweise begrenzt, wodurch eine durch die abrasiven Feststoffe nachteilige Gleitbewegung des Pumpmittels vermeidbar ist.Advantageously, the pumping means on an elastically deformable pumping membrane, which the Pumping chamber slidable and flow-tight partially limited, creating a by the abrasive solids disadvantageous sliding movement of the pumping means is avoidable.
Vorteilhaft ist der Pumpkammer ein Konzentratauslass über ein Konzentratauslassventil zugeordnet, welches weiter vorteilhaft durch einen Radialanschlag des Stössels steuerbar ist, wodurch eine Entleerung des mit Feststoffen angereicherten Konzentrats möglich ist.Advantageously, the pumping chamber is a concentrate outlet via a concentrate outlet valve associated, which further advantageously controlled by a radial stop of the ram is, whereby a discharge of the solids-enriched concentrate is possible.
Vorteilhaft ist der Pumpkammer eine federnd vorgespannte Rückspülkammer durchströmbar zugeordnet, welche bei einer Entspannung der Pumpkammer eine Rückspülung des Filters bewirkt.Advantageously, the pumping chamber can be flown through a spring-biased backflushing chamber associated, which in a relaxation of the pumping chamber, a backwash the filter causes.
Vorteilhaft sind jeweils mehrere Pumpkammern mit zugeordneten Pumpmitteln und Filtern vorhanden, wodurch der Flüssigkeitsdurchsatz erhöhbar ist.In each case, several pumping chambers with associated pumping means and filters are advantageous present, whereby the liquid flow rate can be increased.
Vorteilhaft sind jeweils genau drei Pumpkammern mit zugeordneten Pumpmitteln und Filtern vorhanden, die weiter vorteilhaft umfänglich um 120° im Pumpantrieb angeordnet sind, wodurch die resultierenden Radialkräfte auf den Pumpantrieb minimiert werden.In each case exactly three pumping chambers with associated pumping means and filters are advantageous present, which are further advantageously circumferentially arranged at 120 ° in the pump drive, whereby the resulting radial forces are minimized on the pump drive.
Die Erfindung wird an einem vorteilhaften Ausführungsbeispiel näher erläutert, die
Zeichnungen zeigen:
Nach den Fig. 1, Fig. 2A und Fig. 2B weist eine Pumpe 1 für mit Feststoffen verunreinigte
Flüssigkeiten 2 mit einem Pumpantrieb 3 zumindest einen in einer Pumpkammer 4 mit einem
Einlassventil 5, einem Filter 6 und einem Auslassventil 7 strömungsdicht hin- und
herbewegbaren Pumpmittel 8 mit einer elastisch deformierbaren Pumpmembran 9 auf,
welcher mit einem Stössel 10 antreibbar verbunden ist, wobei der Stössel 10 radial hin- und
herbewegbar gelagert sowie in dem um eine Achse A drehbaren Pumpantrieb 3 in einer
umfänglich radial veränderlichen Führungskontur 11 über ein Rolllager 12 radial
formschlüssig gelagert ist. Der Pumpkammer 4 ist ein Konzentratauslass 13 über ein
Konzentratauslassventil 14 zugeordnet, welches durch einen Radialanschlag 15 des
Stössels 10 steuerbar ist. Der Pumpkammer 4 ist eine federnd vorgespannte
Rückspülkammer 16 durchströmbar zugeordnet. Es sind genau drei Pumpkammern 4 mit
zugeordneten Pumpmittel 8 und Filtern 6 vorhanden, die umfänglich um 120° versetzt
angeordnet sind.Referring to Figs. 1, 2A and 2B, a
Im durch die dreizählig rotationssymmetrische Führungskontur 11 bestimmten
pseudokontinuierlichen Steuerverfahren für das radial hin- und herbewegbare Pumpmittel 8
wird in einem ersten Schritt die Pumpmembran 9 nach radial aussen bewegt, wodurch sich
die Pumpkammer 4 über die Leitung 17 mit Flüssigkeit 2 füllt. Im oberen Totpunkt dieser
Bewegung schliesst das Einlassventil 5. Im nachfolgenden zweiten Schritt wird das
Pumpmittel 8 langsam radial nach innen bewegt, wodurch die Flüssigkeit 2 durch den Filter 6
strömt und auch die Rückspülkammer 16 gegen deren Vorspannung füllt. Im dritten Schritt
öffnet in Folge des inneren Druckanstiegs das Auslassventil 7 und die von Feststoffen
gereinigte Flüssigkeit 2 wird mit einem pumpend wirksamen Restdruck über die Leitung 18
abgegeben. Im vierten Schritt stösst im oberen Totpunkt dieser Bewegung der Stössel 10 mit
dem Radialanschlag 15 an dem Konzentratauslassventil 14 an und öffnet dies zwangsweise,
wodurch das mit Feststoffen angereicherte Flüssigkeitskonzentrat in den Konzentratauslass
13 gelangt. Diese Entspannung bewirkt im fünften Schritt ein Schliessen des Auslassventils
7 und mit dem nunmehr überhöhten Druck der Rückspülkammer 16 ein Rückspülen der
Flüssigkeit 2 durch den Filter 6. Anschliessend wiederholen sich diese Schritte periodisch
dreimal je Umdrehung des Pumpantriebs 3.Im determined by the threefold rotationally
Claims (7)
- Pump for liquids polluted by solids, comprising a pump drive (3) with at least one pumping means (8), which can be moved to and fro in a flow-sealed manner in a pump chamber (4) with an inlet valve (5), a filter (6) and an outlet valve (7) and which is in a driven manner linked to a tappet (10), characterised in that the tappet (10) is mounted so as to be radially movable to and fro and positively mounted in a pump drive (3), which is rotary around an axis (A), in a peripherally radially changeable guide contour (11).
- Pump according to Claim 1, characterised in that the tappet (10) is positively guided in the guide contour (11) via a roller bearing (12).
- Pump according to Claim 1 or 2, characterised in that the pumping means (8) comprises an elastically deformable pump diaphragm (9) which partially defines the pump chamber (4) free of slide movement and flow-sealed.
- Pump according to one of Claims 1 to 3, characterised in that associated with the pump chamber (4) is a concentrate outlet (13) which can be flowed through via a concentrate outlet valve (14) which is optionally controllable by a radial stop (15) of the tappet (10).
- Pump according to one of Claims 1 to 4, characterised in that the pump chamber (4) is in a throughflow manner associated with a sprung pretensioned return-flushing chamber (16).
- Pump according to one of Claims 1 to 5, characterised in that a respective plurality of pump chambers (4) with associated pumping means (8) and filters (6) is provided.
- Pump according to Claim 6, characterised in that precisely three pump chambers (8) are provided with associated pumping means (8) and filters (6), optionally arranged peripherally around 120°.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10250241 | 2002-10-29 | ||
DE2002150241 DE10250241A1 (en) | 2002-10-29 | 2002-10-29 | Pump with filter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1416158A1 EP1416158A1 (en) | 2004-05-06 |
EP1416158B1 true EP1416158B1 (en) | 2005-09-07 |
Family
ID=32087259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030103981 Expired - Lifetime EP1416158B1 (en) | 2002-10-29 | 2003-10-28 | Pump with filter |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1416158B1 (en) |
DE (2) | DE10250241A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1012672A (en) * | 1960-12-21 | 1965-12-08 | Chamberlain Ind Ltd | Improvements in hydraulic motors |
US3915071A (en) * | 1972-07-28 | 1975-10-28 | Linde Ag | Piston for hydrostatic machines |
CH570541A5 (en) * | 1973-10-10 | 1975-12-15 | Sulzer Ag | |
DE2653866A1 (en) * | 1976-11-26 | 1978-06-01 | Linde Ag | PISTON FOR A HYDROSTATIC PISTON MACHINE |
US6293185B1 (en) * | 2000-02-28 | 2001-09-25 | Sauer-Danfoss Inc. | Piston for a hydrostatic cylinder block |
-
2002
- 2002-10-29 DE DE2002150241 patent/DE10250241A1/en not_active Withdrawn
-
2003
- 2003-10-28 DE DE50301137T patent/DE50301137D1/en not_active Expired - Fee Related
- 2003-10-28 EP EP20030103981 patent/EP1416158B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10250241A1 (en) | 2004-05-13 |
DE50301137D1 (en) | 2005-10-13 |
EP1416158A1 (en) | 2004-05-06 |
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