Mounting Configuration For Thermocouple Temperature Detector On Kneader For High Viscosity Kneading Material

摘要

There is provided a thermocouple temperature detector mounting structure for a mixing tank for which the temperature detecting end of the thermocouple temperature detector mounted on the high viscosity mixing material mixer is capable of measuring temperature in real time and for which the mechanical load applied, by the flow of the material being mixed, on the temperature detecting end is made as small as possible. A temperature sensing portion with a hemispherical tip, of a protective inner tube that accommodates a thermocouple element of a thermocouple temperature detector, is mounted on a mixing tank, for mixing a high viscosity mixing material, so as to project from the end of a protective tip that projects into the mixing tank. With the outside diameter of a projecting base section of the protective tip that projects into the mixing tank being 2 to 3 times that of the protective inner tube, and with the projecting length (h) that projects into the mixing tank being the same length as the difference of the radius of the projecting base section of the protective tip and the radius of the protective inner tube, the outer circumferential face of a shoulder section of the protective tip, that is from the projecting base section of the protective tip to the site connecting to the outer circumference of the protective inner tube, is formed in a convex arcuate face that has a radius that is the difference of the radius of the projecting base section of the protective tip and the radius of the protective inner tube.

主权项

1. A mounting configuration of a thermocouple temperature detector for detachably mounting the thermocouple temperature detector on a kneader for high viscosity kneading material, in which the thermocouple temperature detector that measures a temperature of a high viscosity kneading material which is kneaded by rotation of a kneading rotor in a kneading tank of a closed pressure type kneader is configured such that a thermocouple element which is made up of two types of metal wires that generate a thermoelectromotive force is housed in a protective tube, each one of ends of the two types of metal wires being welded in a small hole formed at a tip of a protective inner tube in the protective tube so as to form a heat sensing section, and the other of ends of the two types of metal wires being led to a terminal board provided on the other end of the protective tube and housed in the protective tube, so that the heat sensing section is located in a flow area of the kneading material that flows along an inner surface of the kneading tank of the kneader, wherein
the protective tube is configured such that the heat sensing section of a hemispherical shape formed at a distal end of the protective inner tube protrudes from a center on a distal end of a short tubular shaped protective chip which has a shoulder at a distal end which protrudes in a flow area of the kneading material in the kneading tank, a protrusion proximal end of the protective chip which protrudes in the kneading tank has an outer diameter which is 2 to 3 times as large as that of the protective inner tube, a protruding length which protrudes from the protrusion proximal end into the kneading tank has the same length as the difference between a radius of the protrusion proximal end of the protective chip and a radius of the protective inner tube, an outer peripheral surface of the shoulder of the protective chip which extends from the protrusion proximal end of the protective chip to a position in the protruding length which is in contact with the outer periphery of the protective inner tube is formed in a convex curvature surface having a radius which corresponds to a difference between the radius of the protrusion proximal end of the protective chip and the radius of the protective inner tube, and the thermocouple temperature detector is mounted on the kneading tank such that the protrusion proximal end of the protective chip is located at a position along an inner surface of the kneading tank, the shoulder of the protective chip protrudes in the flow area of the kneading material so that a flow of the kneading material which flows along the inner surface of the kneading tank toward the temperature detection end is directed to a direction bypassing the protective chip, and a portion of the flow which flows toward the temperature detection end is directed to flow along the top of the heat sensing section which protrudes from the protective chip.