Device for measuring thrust load acting on rotor of sealed kneading apparatus

A device for measuring a thrust load acting on a rotor of a hermetically sealed kneader which includes a pair of rotors which are arranged adjacent to each other at a predetermined interval so that axes are in parallel with each other and which rotate in directions different from each other and bearings provided at opposite ends of each of the pair of rotors, where the bearings support a load in a radial direction which acts on each rotor, and where a load in a thrust direction acting on the rotor is supported by one of the bearings at one end of the opposite ends of each rotor, the device comprising:

• at least one or more displacement sensors arranged on an outer ring fixing member for fixing an outer ring of the bearing at the one end or on a casing to which the outer ring fixing member is attached, and
• a load calculating unit configured to calculate the thrust load acting on the rotor;
• wherein the at least one or more displacement sensors are configure to measure a relative displacement in an axial direction between the outer ring fixing member or the casing and an inner ring fixing member for fixing an inner ring of the bearing at the one end or the rotor to which the inner ring fixing member is attached, and
• wherein the load calculating unit calculates the thrust load acting on the rotor by multiplying the relative displacement measured by the at least one or more displacement sensors by a conversion coefficient.