Eccentric screw pump

Abstract

An eccentric screw pump with a helical rotor and a stator made of an elastomer material, in which the rotor rotates by forming several pump chambers, wherein the stator is vulcanized into a preferably metal support pipe, wherein the stator has at least one sensor, which is inseparably connected to the stator, wherein the inseparable connection between the stator and senor is made by vulcanization.

1 . An eccentric screw pump with a helical rotor and a stator made of an elastomer material, in which the rotor rotates by forming several pump chambers, wherein the stator is vulcanized into a preferably metal support pipe, wherein the stator has at least one sensor, which is inseparably connected to the stator. 
     
     
         2 . The eccentric screw pump according to  claim 1 , wherein the at least one sensor is configured, attached and connected so that during the connection of the stator into the support pipe assigned to it, it already delivers data. 
     
     
         3 . The eccentric screw pump according to  claim 1 , wherein the at least one sensor is fixed to the inner circumferential surface of the support pipe. 
     
     
         4 . The eccentric screw pump according to  claim 1 , wherein the at least one sensor is covered by an additional plastic seal, which is in a geometrically undefined state, thus is applied like paint or sealing material. 
     
     
         5 . The eccentric screw pump according to  claim 1 , wherein a connection cable of the at least one sensor is guided out of the elastomer material of the stator all the way to the accessible outer side of the support pipe; preferably over the front ring surface of the support pipe, which is ideally provided for this purpose with a recess, which forms a passage for the connection cable, wherein the connection cable is also vulcanized into the elastomer material of the stator area by area. 
     
     
         6 . The eccentric screw pump according to  claim 1 , wherein the at least one sensor is arranged on a flexible printed circuit board, which is adhered with its side facing away from the stator to the inner circumferential surface of the support pipe. 
     
     
         7 . The eccentric screw pump according to  claim 1 , wherein the flexible printed circuit board is coated with a PSA on its side facing away from the stator. 
     
     
         8 . The eccentric screw pump according to  claim 1 , wherein the connection cable and/or the connection cables to further sensors are also embodied as flexible printed circuit board with printed conductor tracks, wherein the flexible printed circuit board is preferably formed in one piece as a whole or at least across several sensors. 
     
     
         9 . The eccentric screw pump, according to  claim 1 , with several sensors, which are positioned so as to be spaced apart from one another, wherein the sensors, compared to one another, are covered with elastomer material of the stator with varying thickness. 
     
     
         10 . The eccentric screw pump according to  claim 1 , wherein in addition to the at least one sensor, a data storage is also vulcanized, on which data can be stored. 
     
     
         11 . The eccentric screw pump according to  claim 1 , wherein several different sensors are provided, preferably at least two from the group of the pressure sensors, the strain sensors and the inductive sensors. 
     
     
         12 . A method for producing an eccentric screw pump, wherein at least one sensor is attached and is made operational on a support pipe, which is not yet equipped with a stator, and the support pipe is then flooded with elastomer material, which is to be vulcanized, at least in the regions, in which the stator is to be molded, and is then vulcanized by means of heat application and at least one data value of the at least one sensor is used thereby, preferably in order to trigger an activity therewith, if necessary, which changes at least one parameter of the vulcanization process. 
     
     
         13 . The method according to  claim 12 , wherein the recess in the front ring surface, via which the connection cable is guided to the outside, is closed by means of the vulcanization of the stator. 
     
     
         14 . An eccentric screw pump with a helical rotor and a stator made of an elastomer material, in which the rotor rotates by forming several pump chambers, wherein the stator is vulcanized into a preferably metal support pipe, wherein the stator has at least one sensor, which is inseparably connected to the stator, wherein the inseparable connection between the stator and senor is made by vulcanization. 
     
     
         15 . The eccentric screw pump according to  claim 2 , wherein the at least one sensor is fixed to the inner circumferential surface of the support pipe. 
     
     
         16 . The eccentric screw pump according to  claim 2 , wherein the at least one sensor is covered by an additional plastic seal, which is in a geometrically undefined state, thus is applied like paint or sealing material. 
     
     
         17 . The eccentric screw pump according to  claim 2 , wherein a connection cable of the at least one sensor is guided out of the elastomer material of the stator all the way to the accessible outer side of the support pipe; preferably over the front ring surface of the support pipe, which is ideally provided for this purpose with a recess, which forms a passage for the connection cable, wherein the connection cable is also vulcanized into the elastomer material of the stator area by area. 
     
     
         18 . The eccentric screw pump according to  claim 2 , wherein the at least one sensor is arranged on a flexible printed circuit board, which is adhered with its side facing away from the stator to the inner circumferential surface of the support pipe. 
     
     
         19 . The eccentric screw pump according to  claim 2 , wherein the flexible printed circuit board is coated with a PSA on its side facing away from the stator. 
     
     
         20 . The eccentric screw pump according to  claim 2 , wherein the connection cable and/or the connection cables to further sensors are also embodied as flexible printed circuit board with printed conductor tracks, wherein the flexible printed circuit board is preferably formed in one piece as a whole or at least across several sensors.