EP1416158A1 - Pump with filter - Google Patents

Pump with filter Download PDF

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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
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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
Application number
EP03103981A
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German (de)
French (fr)
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EP1416158B1 (en
Inventor
Rory Britz
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Hilti AG
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Hilti AG
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Publication of EP1416158A1 publication Critical patent/EP1416158A1/en
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Publication of EP1416158B1 publication Critical patent/EP1416158B1/en
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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
    • 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.

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  • 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

The pump (1), for liquids (2) contaminated with solid matter, has at least one filter (6) in the pump chamber (4). The pump chamber has an inflow (5) and an outflow (7) valve. The pump unit (8), with a membrane (9), is moved to and fro by a push rod (10), with a radial reciprocating movement. The pump drive (3), rotating around an axis (A), is mounted within a radially variable guide contour (11), in a positive fit. The push rod rides in the guide contour in a positive fit through a roller bearing (12).

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.
The invention is explained in more detail using an advantageous embodiment, the drawings show:
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 pump 1 for contaminated with solids Liquids 2 with a pump drive 3 at least one in a pump chamber 4 with a Inlet valve 5, a filter 6 and an outlet valve 7 back and forth movable pump means 8 with an elastically deformable pump membrane 9, which is drivably connected to a plunger 10, the plunger 10 moving radially back and forth movably mounted and in the pump drive 3 rotatable about an axis A in one Radially variable guide contour 11 radially via a roller bearing 12 is positively mounted. 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.

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 symmetrical guide contour 11 pseudo-continuous control method for the radially reciprocable pump means 8 in a first step, the pump membrane 9 is moved radially outwards, whereby the pump chamber 4 fills with liquid 2 via the line 17. At top dead center this Movement closes the inlet valve 5. In the second step that follows, it will Pump means 8 slowly moves radially inward, causing liquid 2 to pass through filter 6 flows and also fills the backwash chamber 16 against its bias. In the third step opens the outlet valve 7 and that of solids as a result of the internal pressure increase cleaned liquid 2 is pumped with residual pressure via line 18 issued. In the fourth step, 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. These steps are then repeated periodically three times per revolution of the pump drive 3.

Claims (7)

Pumpe für mit Feststoffen verunreinigte Flüssigkeiten (2) mit einem Pumpantrieb (3) mit zumindest einem, in einer Pumpkammer (4) mit einem Einlassventil (5), einem Filter (6) und einem Auslassventil (7) strömungsdicht hin- und herbewegbaren Pumpmittel (8), welches mit einem Stössel (10) antreibbar verbunden ist, dadurch gekennzeichnet, dass der Stössel (10) radial hin- und herbewegbar gelagert sowie in einem um eine Achse (A) drehbaren Pumpantrieb (3) in einer umfänglich radial veränderlichen Führungskontur (11) radial formschlüssig gelagert ist.Pump for liquids contaminated with solids (2) with a pump drive (3) with at least one pumping means (1), which can be moved back and forth in a fluid-tight manner in a pumping chamber (4) with an inlet valve (5), a filter (6) and an outlet valve (7) 8), which is drivably connected to a plunger (10), characterized in that the plunger (10) is mounted such that it can be moved back and forth radially and in a pump drive (3) rotatable about an axis (A) in a circumferentially radially variable guide contour ( 11) is radially positively mounted. Pumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Stössel (10) in der Führungskontur (11) formschlüssig über ein Rolllager (12) geführt ist.Pump according to claim 1, characterized in that the plunger (10) in the guide contour (11) is guided positively over a roller bearing (12). Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Pumpmittel (8) eine elastisch deformierbare Pumpmembran (9) aufweist, welche die Pumpkammer (4) gleitbewegungsfrei sowie strömungsdicht teilweise begrenzt.Pump according to claim 1 or 2, characterized in that the pump means (8) has an elastically deformable pump membrane (9) which partially delimits the pump chamber (4) without sliding movement and in a flow-tight manner. Pumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Pumpkammer (4) ein Konzentratauslass (13) über ein Konzentratauslassventil (14) durchströmbar zugeordnet ist, welches optional durch einen Radialanschlag (15) des Stössels (10) steuerbar ist.Pump according to one of claims 1 to 3, characterized in that the pump chamber (4) is assigned a concentrate outlet (13) through which a concentrate outlet valve (14) can flow, which can optionally be controlled by a radial stop (15) of the plunger (10). Pumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Pumpkammer (4) eine federnd vorgespannte Rückspülkammer (16) durchströmbar zugeordnet ist.Pump according to one of claims 1 to 4, characterized in that the pumping chamber (4) is associated with a flow through a spring-loaded backwashing chamber (16). Pumpe einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass jeweils mehrere Pumpkammern (4) mit zugeordneten Pumpmitteln (8) und Filtern (6) vorhanden sind.Pump according to one of claims 1 to 5, characterized in that there are several pumping chambers (4) with associated pumping means (8) and filters (6). Pumpe nach Anspruch 6, dadurch gekennzeichnet, dass jeweils genau drei Pumpkammern (8) mit zugeordneten Pumpmitteln (8) und Filtern (6) vorhanden sind, die optional umfänglich um 120° angeordnet sind.Pump according to claim 6, characterized in that exactly three pumping chambers (8) with associated pumping means (8) and filters (6) are present, which are optionally arranged circumferentially at 120 °.
EP20030103981 2002-10-29 2003-10-28 Pump with filter Expired - Lifetime EP1416158B1 (en)

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

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DE (2) DE10250241A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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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