EP1416158A1 - Pump with filter - Google Patents
Pump with filter Download PDFInfo
- Publication number
- EP1416158A1 EP1416158A1 EP03103981A EP03103981A EP1416158A1 EP 1416158 A1 EP1416158 A1 EP 1416158A1 EP 03103981 A EP03103981 A EP 03103981A EP 03103981 A EP03103981 A EP 03103981A EP 1416158 A1 EP1416158 A1 EP 1416158A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- chamber
- pumping
- plunger
- 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.)
- Granted
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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 also designates a pump, preferably a drilling water pump a reciprocating pump means and a filter.
- Pseudo-continuous pumps take over in a first work cycle resiliently biased inlet valve a fluid in a pump chamber to this finally compress in a second cycle and via an outlet valve issue.
- drilling water pumps take heavily mixed solids Drilling water at low pressure and put both filtered at separate outlets Drilling water as well as drilling water concentrated with solids under higher pressures to disposal. Due to the strong solid content in the drilling water is a regular Backwashing the filter is necessary to avoid permanent clogging.
- a multi-cascaded, reciprocating piston is one Piston pump designed as a filter piston made of porous metal, which compresses at the same time and cleans. Such a construction is unsuitable for heavily contaminated fluids. Of It is also not possible to backwash the filter.
- the object of the invention is to implement a filtering pump for strong Solid fluids. Another aspect is the reliable sealing of the Pumping chamber.
- a pump for liquids contaminated with solids has a Pump drive at least one in a pump chamber with an inlet valve, a filter and an outlet valve fluidly reciprocable pump means, which with a plunger is drivably connected, the plunger being movable radially back and forth stored and in a pump drive rotatable about an axis in a radially circumferential changeable guide contour is radially positively mounted.
- the plunger is advantageously guided in a form-fitting manner via a roller bearing in the guide contour, thereby avoiding sliding friction.
- the pump means advantageously has an elastically deformable pump membrane, which the Pump chamber partially free of sliding movement and partially flow-tight, thus creating a disadvantageous sliding movement of the pump means can be avoided by the abrasive solids.
- the pump chamber is advantageously a concentrate outlet via a concentrate outlet valve assigned, which is further advantageously controllable by a radial stop of the ram is, whereby an emptying of the concentrate enriched with solids is possible.
- the pumping chamber can advantageously flow through a spring-loaded backwashing chamber assigned which, when the pump chamber relaxes, backwashes the filter causes.
- Exactly three pumping chambers with associated pumping means and filters are advantageous in each case available, which are further advantageously arranged circumferentially by 120 ° in the pump drive, which minimizes the resulting radial forces on the pump drive.
- the pump chamber 4 is a concentrate outlet 13 via a Concentrate outlet valve 14 assigned by a radial stop 15 of the Ram 10 is controllable.
- the pump chamber 4 is a spring-loaded Backwash chamber 16 assigned to flow through. There are exactly three pumping chambers 4 with assigned pump means 8 and filters 6, which are circumferentially offset by 120 ° are arranged.
- the plunger 10 coexists at the top dead center of this movement the radial stop 15 on the concentrate outlet valve 14 and forcibly opens this, whereby the liquid concentrate enriched in solids enters the concentrate outlet 13 arrives.
- This relaxation causes the exhaust valve to close in the fifth step 7 and with the now excessive pressure of the backwash chamber 16 backwashing the Liquid 2 through the filter 6.
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)
Abstract
Description
Die Erfindung bezeichnet eine, vorzugsweise als Bohrwasserpumpe ausgeführte, Pumpe mit einem hin- und herbewegten Pumpmittel und einem Filter.The invention also designates a pump, preferably a drilling water pump a reciprocating pump 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 work cycle resiliently biased inlet valve a fluid in a pump chamber to this finally compress in a second cycle and via an outlet valve issue.
Nach der DE20110244U1 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 DE20110244U1, drilling water pumps take heavily mixed solids Drilling water at low pressure and put both filtered at separate outlets Drilling water as well as drilling water concentrated with solids under higher pressures to disposal. Due to the strong solid content in the drilling water is a regular Backwashing the filter is necessary 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, a multi-cascaded, reciprocating piston is one Piston pump designed as a filter piston made of porous metal, which compresses at the same time and cleans. Such a construction is unsuitable for heavily contaminated fluids. Of It is also not possible to backwash the filter.
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 to implement a filtering pump for strong Solid fluids. Another aspect is the reliable sealing of the Pumping chamber.
Die Aufgabe wird im Wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The task is essentially solved by the features of the independent claims. Advantageous further developments result 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 liquids contaminated with solids has a Pump drive at least one in a pump chamber with an inlet valve, a filter and an outlet valve fluidly reciprocable pump means, which with a plunger is drivably connected, the plunger being movable radially back and forth stored and in a pump drive rotatable about an axis in a radially circumferential changeable guide contour is radially positively mounted.
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.Due to the radially positive mounting of the plunger driving the pump means a pumping back and forth movement when the pump drive rotates about the axis of the pump 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.The plunger is advantageously guided in a form-fitting manner via a roller bearing in the guide contour, thereby avoiding sliding friction.
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.The pump means advantageously has an elastically deformable pump membrane, which the Pump chamber partially free of sliding movement and partially flow-tight, thus creating a disadvantageous sliding movement of the pump means can be avoided by the abrasive solids.
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.The pump chamber is advantageously a concentrate outlet via a concentrate outlet valve assigned, which is further advantageously controllable by a radial stop of the ram is, whereby an emptying of the concentrate enriched with solids is possible.
Vorteilhaft ist der Pumpkammer eine federnd vorgespannte Rückspülkammer durchströmbar zugeordnet, welche bei einer Entspannung der Pumpkammer eine Rückspülung des Filters bewirkt.The pumping chamber can advantageously flow through a spring-loaded backwashing chamber assigned which, when the pump chamber relaxes, backwashes the filter causes.
Vorteilhaft sind jeweils mehrere Pumpkammern mit zugeordneten Pumpmitteln und Filtern vorhanden, wodurch der Flüssigkeitsdurchsatz erhöhbar ist.Several pumping chambers with associated pumping means and filters are advantageous in each case present, whereby the liquid throughput 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.Exactly three pumping chambers with associated pumping means and filters are advantageous in each case available, which are further advantageously arranged circumferentially by 120 ° in the pump drive, which minimizes the resulting radial forces on the pump drive.
Die Erfindung wird an einem vorteilhaften Ausführungsbeispiel näher erläutert, die Zeichnungen zeigen:
- Fig. 1
- Einen Längsschnitt durch eine Pumpe gemäss den Linien I-I in Fig. 2A und Fig. 2B;
- Fig. 2A
- einen Querschnitt gemäss Linie IIA - IIA in Fig. 1; und
- Fig. 2B
- einen Querschnitt gemäss Linie IIB - IIB in Fig. 1.
- Fig. 1
- A longitudinal section through a pump according to lines II in FIGS. 2A and 2B;
- Figure 2A
- a cross section along line IIA - IIA in Fig. 1; and
- Figure 2B
- 2 shows a cross section along line IIB - IIB in FIG. 1.
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.According 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.Determined by the threefold rotationally
Claims (7)
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 true EP1416158A1 (en) | 2004-05-06 |
EP1416158B1 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) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3354786A (en) * | 1960-12-21 | 1967-11-28 | Chamberlain Ind Ltd | Hydraulic motors |
US3915071A (en) * | 1972-07-28 | 1975-10-28 | Linde Ag | Piston for hydrostatic machines |
US3945303A (en) * | 1973-10-10 | 1976-03-23 | Sulzer Brothers Ltd. | Hydrostatic piston machine |
US4216704A (en) * | 1976-11-26 | 1980-08-12 | Linde Aktiengesellschaft | Piston for a hydrostatic axial-piston machine |
US6318241B1 (en) * | 2000-02-28 | 2001-11-20 | 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
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3354786A (en) * | 1960-12-21 | 1967-11-28 | Chamberlain Ind Ltd | Hydraulic motors |
US3915071A (en) * | 1972-07-28 | 1975-10-28 | Linde Ag | Piston for hydrostatic machines |
US3945303A (en) * | 1973-10-10 | 1976-03-23 | Sulzer Brothers Ltd. | Hydrostatic piston machine |
US4216704A (en) * | 1976-11-26 | 1980-08-12 | Linde Aktiengesellschaft | Piston for a hydrostatic axial-piston machine |
US6318241B1 (en) * | 2000-02-28 | 2001-11-20 | Sauer-Danfoss Inc. | Piston for a hydrostatic cylinder block |
Also Published As
Publication number | Publication date |
---|---|
EP1416158B1 (en) | 2005-09-07 |
DE10250241A1 (en) | 2004-05-13 |
DE50301137D1 (en) | 2005-10-13 |
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