Pump

Abstract

A pump for conveying a fluid comprises a pump housing ( 1 ) with a fluid inlet ( 26 ), a pumping chamber ( 4 ), which has a flow connection to the fluid inlet ( 26 ), and a fluid outlet ( 25 ), which has a flow connection to the pumping chamber ( 4 ). The pump furthermore has a drivable pump body ( 2 ), which at least partially limits the pumping chamber ( 4 ), and a pump body drive device. The pump body drive device comprises a pump body drive mechanism ( 3 ) which is connected to the pump body ( 2 ) and which comprises a first drive magnet ( 16 ) and is moveable along a displacement path, and a second drive magnet ( 11 ) arranged adjacent to the pump body drive mechanism ( 3 ) for moving the pump body drive mechanism ( 3 ) along the displacement path. The pump also comprises an actuable fixing device ( 33 ) for fixing the pump body drive mechanism ( 3 ), which, in a release position, releases the pump body drive mechanism ( 3 ) and, in a fixing position, fixes the pump body drive mechanism ( 3 ).

1 . Pump for conveying a fluid, comprising
 a) a pump housing ( 1 ),   b) with at least one fluid inlet ( 26 ),   c) with at least one pumping chamber ( 4 ), which has a flow connection to the at least one fluid inlet ( 26 ), and   d) with at least one fluid outlet ( 25 ), which has a flow connection to the at least one pumping chamber ( 4 ),   e) at least one drivable pump body ( 2 ), which   f) at least partially limits the at least one pumping chamber ( 4 ),   g) at least one pump body drive mechanism, which has   h) at least one pump body drive mechanism ( 3 ) connected to the at least one pump body ( 2 ) for driving the at least one pump body ( 2 ), wherein the at least one pump body drive mechanism ( 3 ) is movable along a displacement path, and characterised by   i) at least one actuatable fixing device ( 33 ;  33   a;    33   b;    33   c ) for fixing the at least one pump body drive mechanism ( 3 ), wherein the at least one fixing device ( 33 ;  33   a;    33   b ;  33   c )   j) in a release position, releases the at least one pump body drive mechanism ( 3 ), wherein the at least one pump body drive mechanism ( 3 ) is then movable along its displacement path, and   k) in a fixing position, fixes the at least one pump body drive mechanism ( 3 ) and an exchange of the at least one pump body ( 2 ) is possible,   l) can be actuated by at least one actuating device ( 32 ;  32   a;    32   b;    32   c ) which is actuably mounted on the pump housing ( 1 ), and   m) comprises at least one fixing part ( 47 ,  87 ;  47   a ;  47   b ;  47   c )
 which can be displaced by the at least one actuating device ( 32 ;  32   a ;  32   b ;  32   c ) for fixing the at least one pump body drive mechanism ( 3 ), 
 being movable between the release position and the fixing position, and 
 in its fixing position, fixes the at least one pump body drive mechanism ( 3 ) at least in the direction of its displacement path. 
   
     
     
         2 . Pump for conveying a fluid, comprising
 a) a pump housing ( 1 ),   b) with at least one fluid inlet ( 26 ),   c) with at least one pumping chamber ( 4 ), which has a flow connection to the at least one fluid inlet ( 26 ), and   d) with at least one fluid outlet ( 25 ), which has a flow connection to the at least one pumping chamber ( 4 ),   e) at least one drivable pump body ( 2 ), which   f) at least partially limits the at least one pumping chamber ( 4 ),   g) at least one pump body drive mechanism, which has   h) at least one pump body drive mechanism ( 3 ) connected to the at least one pump body ( 2 ) for driving the at least one pump body ( 2 ), wherein the at least one pump body drive mechanism ( 3 ) is movable along a displacement path   i) at least one actuatable fixing device ( 33 ;  33   a ;  33   b ;  33   c ) for fixing the at least one pump body drive mechanism ( 3 ), wherein the at least one fixing device ( 33 ;  33   a ;  33   b ;  33   c )   j) when the pump is in an operating state, is in a release position, wherein in the release position, the at least one pump body drive mechanism is movable along its displacement path, and   k) in a fixing position,
 centers the at least one pump body drive mechanism in the direction of its displacement path, and 
 also transversely to its displacement path, and 
 further fixes the at least one pump body drive mechanism in the direction of its displacement path, and 
 in the direction transverse to its displacement path, 
   l) wherein the at least one pump body ( 2 ) may be removed from the at least one pump body drive mechanism with the at least one pump body drive mechanism being maintained in the fixing position by the at least one fixing device ( 33 ;  33   a ;  33   b ;  33   c ).   
     
     
         3 . Pump according to  claim 2 , wherein the fixing device ( 33 ;  33   a ;  33   b ;  33   c ) can be actuated by at least one actuating device ( 32 ;  32   a ;  32   b ;  32   c ), which is actuably mounted, preferably pivotably, on the pump housing ( 1 ), the at least one actuating device ( 32 ;  32   a ;  32   b ;  32   c ) preferably comprising at least one actuating means ( 36 ) for the actuation thereof. 
     
     
         4 . Pump according to  claim 3 , wherein the fixing device ( 33 ;  33   a ;  33   b ;  33   c ) comprises at least one fixing part ( 47 ,  87 ;  47   a ;  47   b ;  47   c ) which can be displaced by the actuating device ( 32 ;  32   a ;  32   b ;  32   c ) for fixing the pump body drive mechanism ( 3 ), the at least one fixing part ( 47 ,  87 ;  47   a ;  47   b ;  47   c ) being movable between the release position and the fixing position. 
     
     
         5 . Pump according to  claim 1 , wherein the fixing part ( 47 ,  47   a ;  47   b ;  47   c ), in its fixing position, fixes the pump body drive mechanism ( 3 ) at least in the direction of its displacement path. 
     
     
         6 . Pump according to  claim 1 , wherein at least one actuable centering part ( 48 ;  48   a ;  48   b ,  73 ;  48   c ) for centering the pump body drive mechanism ( 3 ), wherein the at least one centering part ( 48 ;  48   a ;  48   b ,  73 ;  48   c ) preferably has at least one centering flank for interaction with the pump body drive mechanism ( 3 ). 
     
     
         7 . Pump according to  claim 6 , wherein the centering part ( 48 ;  48   a ;  48   b ;  48   c ) centers the pump body drive mechanism ( 3 ) in the direction of its displacement path. 
     
     
         8 . Pump according to  claim 6 , wherein the centering part ( 48 ;  48   a ;  73 ;  48   c ) centers the pump body drive mechanism ( 3 ) transversely to its displacement path. 
     
     
         9 . Pump according to any one of claims  claim 6 , wherein the centering part ( 48 ;  48   a ;  48   b ,  73 ;  48   c ) is connected to the fixing device ( 33 ;  33   a ;  33   b ;  33   c ). 
     
     
         10 . Pump according to  claim 1 , wherein the fixing device ( 33   a ) has at least one wedge mechanism ( 58 ), the at least one wedge mechanism ( 58 ) having a coupling wedge ( 59 ), which can be actuated by the actuating device ( 32   a ), and the fixing part ( 47   a ), which interacts with the coupling wedge ( 59 ) and is configured in a wedge-like manner, at least one spring element ( 70 ) also preferably being provided to move the fixing part ( 47   a ) into its release position. 
     
     
         11 . Pump according to  claim 1 , wherein the fixing device ( 33   b ) has at least one encompassing body ( 47   b ) to at least partially encompass the pump body drive mechanism ( 3 ), the at least one encompassing body ( 47   b ) preferably having at least one encompassing receiver ( 75 ). 
     
     
         12 . Pump according to  claim 1 , wherein the fixing part ( 47   a ;  47   b ;  47   c ) and the actuating device ( 32   a ;  32   b ;  32   c ) are coupled to one another by at least one link arrangement, the at least one link arrangement having at least one link pin ( 71 ;  71   c ) and at least one link ( 54 ;  54   b ;  54   c ) for guiding the at least one link pin ( 71 ;  71   c ). 
     
     
         13 . Pump according to  claim 12 , wherein the link ( 54 ;  54   b ;  54   c ) has at least one link pin actuating portion ( 56 ;  56   b ;  56   c ) for actuating the link pin ( 71 ;  71   c ), the link ( 54 ;  54   b ;  54   c ) preferably also having a fixing portion ( 57 ;  57   b ) for locally securing the link pin ( 71 ;  71   c ). 
     
     
         14 . Pump according to  claim 13 , wherein the link pin ( 71   c ) forms the fixing part ( 47   c ). 
     
     
         15 . Pump according to  claim 1 , wherein the actuating device ( 32 ) and the fixing device ( 33 ) are rigidly connected to one another, the fixing part ( 47 ) preferably being configured as a fixing face for resting on the pump body drive mechanism ( 3 ). 
     
     
         16 . Pump according to  claim 15 , wherein the actuating device ( 32 ) comprises at least one resilient spring means ( 50 ), which, in the fixing position of the fixing part ( 47 ), rests on the pump body drive mechanism ( 3 ) for holding the actuating device ( 32 ) in its fixing position.