Pump Housing Part

Abstract

The invention relates to a housing part, in particular a pump housing part, having a metering unit fastened in a pressure-tight manner to the housing part so as to be detachable, that is to say separable repeatedly without destruction. In order to optimize the fastening of the functional part, a collar is provided on the housing part, the collar having a tapered collar face against which a first tapered face of at least one tapered element bears, the tapered element having a second tapered face with which a tapered ring face of a tapered ring comes into contact when the tapered ring is moved from an open position into a closed position in order to press a positively locking face of the tapered element against a mating face which is provided on the functional unit.

1 - 8 . (canceled) 
   
   
       9 . In a pump housing part metering unit secured thereon, and attachment means for releasably repeatedly nondestructively separably securing the metering unit in pressure-tight fashion on the housing part, the attachment means comprising a collar on the housing part and having a tapered collar face, at least one tapered element having a first tapered face resting on the tapered cellar face and a positive engagement face, the element having a second tapered face, a tapered ring movable from an open to a closed position and having tapered ring face contacting the second tapered face when the tapered ring is moved from the open position to the closed position pressing the positive-engagement face of the tapered element against a counterpart face on the functional unit. 
   
   
       10 . The housing part as defined by  claim 9 , wherein the collar extends over a circumferential angle of more than 180° and less than 360°, whereby the collar is not embodied continuously in the circumferential direction but instead has a mounting opening. 
   
   
       11 . The housing part as defined by  claim 10 , wherein the collar extends over a circumferential angle of approximately 270°. 
   
   
       12 . The housing part as defined by  claim 9 , wherein at least two tapered elements are disposed between the tapered collar face and the counterpart face. 
   
   
       13 . The housing part as defined by  claim 10 , wherein at least two tapered elements are disposed between the tapered collar face and the counterpart face. 
   
   
       14 . The housing part as defined by  claim 11 , wherein at least two tapered elements are disposed between the tapered collar face and the counterpart face. 
   
   
       15 . The housing part as defined by  claim 9 , further comprising a rim on the metering unit, the counterpart face being embodied on the functional unit. 
   
   
       16 . The housing part as defined by  claim 10 , further comprising a rim on the metering unit, the counterpart face being embodied on the functional unit. 
   
   
       17 . The housing part as defined by  claim 12 , further comprising a rim on the metering unit, the counterpart face being embodied on the functional unit. 
   
   
       18 . The housing part as defined by  claim 9 , wherein the second tapered face is disposed at an angle of 81 to 89° relative to the positive-engagement face of the tapered element. 
   
   
       19 . The housing part as defined by  claim 10 , wherein the second tapered face is disposed at an angle of 81 to 89° relative to the positive-engagement face of the tapered element. 
   
   
       20 . The housing part as defined by  claim 12 , wherein the second tapered face is disposed at an angle of 81 to 89° relative to the positive-engagement face of the tapered element. 
   
   
       21 . The housing part as defined by  claim 15 , wherein the second tapered face is disposed at an angle of 81 to 89° relative to the positive-engagement face of the tapered element. 
   
   
       22 . The housing part as defined by  claim 9 , wherein the second tapered face is disposed at an angle of 40 to 90° relative to the first tapered face of the tapered element. 
   
   
       23 . The housing part as defined by  claim 10 , wherein the second tapered face is disposed at an angle of 40 to 90° relative to the first tapered face of the tapered element. 
   
   
       24 . The housing part as defined by  claim 15 , wherein the second tapered face is disposed at an angle of 40 to 90° relative to the first tapered face of the tapered element. 
   
   
       25 . The housing part as defined by  claim 18 , wherein the second tapered face is disposed at an angle of 40 to 90° relative to the first tapered face of the tapered element. 
   
   
       26 . The housing part as defined by  claim 9 , wherein the tapered ring has an annular groove extending around its outer circumference. 
   
   
       27 . The housing part as defined by  claim 10 , wherein the tapered ring has an annular groove extending around its outer circumference. 
   
   
       28 . The housing part as defined by  claim 25 , wherein the tapered ring has an annular groove extending around its outer circumference.