Kobe Steel, Ltd.

Yusuke Tanaka

Yasuaki Yamane

Toru Okada

Eiji Takahashi

Kazuhisa Fukutani

Norifumi Yamada

Chitaka Manabe

Masaki Naoi

Toshihide Fukui

Masaaki Uemura

Taro Uchida

A protecting tube deterioration detecting apparatus applies a predetermined electric current to a measurement target thermocouple with protecting tube for a predetermined time, calculates a temperature rise amount of the thermocouple, and determines, when the calculated temperature rise amount exceeds a predetermined threshold, that the protecting tube is deteriorated.

Protecting tube deterioration detecting apparatus and method therefor

The relative displacement in the axial direction between an outer ring fixing member or casing and an inner ring fixing member or rotor is determined, said outer ring fixing member being a member for affixing an outer ring of a bearing on one side, and said inner ring fixing member being a member for affixing an inner ring of the bearing on the one end side. When calculating a thrust load acting on the rotor by multiplying the determined relative displacement by a conversion coefficient, an axial force measuring bolt is used as a tightening bolt for affixing the bearing on the one end side, said axial force measuring bolt enabling measurement of a load acting in the axial direction. The axial force measured by the axial force measuring bolt and the relative displacement during measurement of the axial force are used to calibrate the conversion coefficient.

Thrust load measuring device for sealed mixing device and calibration method for same

A device for measuring a thrust load acting on a rotor of a hermetically sealed kneader includes displacement sensors () and a load-calculating member. The displacement sensors () are configured to measure relative displacement along the axial direction of an outer ring-fixing member (), which is for fixing the outer ring () of one end of a bearing (), or a casing () with respect to an inner ring-fixing member (), which is for fixing the inner ring () of the one end of the bearing (), or the rotor (). The load-calculating unit calculates the thrust load acting on the rotor () by multiplying the relative displacement measured by the displacement sensors () by a conversion coefficient.

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

A mixing rotor includes: a rotor shaft portion that includes a cooling passageway formed therein, and a mixing blade portion that is formed in an outer circumferential portion of the rotor shaft portion, wherein each of the long blades of the mixing blade portion includes a land portion as an end surface of the long blade facing a radially outside of the mixing rotor, a length of each of the long blades in the axis direction is set to be 0.6 times or more as large as a length of the mixing blade portion in the axis direction, a biting angle of each of the long blades is set to an angle equal to or smaller than 31&#xb0;, and a center angle with respect to a land width as a width of the land portion in the cross-section of each of the long blades orthogonal to the axis direction is set to an angle equal to or larger than 7&#xb0;.

Mixing rotor and internal mixer

An internal batch mixer is provided with: a casing within which a material is mixed; a door which opens and closes a material discharge opening of the casing by being rotated about the axis thereof and closes the material discharge opening when in a closed state; and a latch mechanism which, when the material is mixed in the casing, holds the door in a latched state, the latched state being a state in which the material discharge opening is being closed by the door and cannot be opened, and which, when the material having been mixed in the casing is discharged from the inside of the casing, releases the door from the latched state. The latch mechanism is provided with a linear actuator which has a movable section capable of moving linearly and moves the movable section to the door side to supply power to the latch member, the power causing the latch member to move to the door side, and a linear sensor for measuring the distance of linear movement of the movable section caused by the linear actuator. Information relating to the displacement of the latch member is displayed on a display device on the basis of the distance of linear movement of the movable section measured by the linear sensor.

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Takasago, Japan

Yusuke Tanaka