Special tool for measuring abrasion loss of thermocouple of internal mixer

Abstract

The utility model relates to a special tool for measuring the abrasion loss of a thermocouple of an internal mixer, and belongs to the field of testing tools for mixing tire rubber. The measuring scale is of a cylindrical structure, data scales are machined on the outer cylinder wall of the measuring scale, a screw hole is machined in the cylinder wall of the measuring scale, a locking bolt is screwed in the screw hole in a threaded fit mode, a compression spring is installed in an inner cavity of the measuring scale in the axial direction, and the outer end of the compression spring is connected with a cone. The device has the beneficial effects that data deviation caused by incorrect measurement in the measurement process is avoided, and the data for measuring the abrasion loss of the wear-resistant head of the thermocouple is accurate.

Description

Technical Field

[0001] This utility model relates to the field of testing tools for tire rubber compounding, specifically a special tool for measuring thermocouple wear in a mixer. Background Technology

[0002] As is well known, the quality of rubber compounding in an internal mixer largely depends on the sensitivity of the thermocouple, the temperature monitoring device. The completion of the mixing cycle is controlled by collecting the temperature of the rubber compound inside the mixing chamber. Currently, the only method for collecting temperature in an internal mixer is through thermocouples. The thermocouple works by having a wear-resistant material with high thermal conductivity at its head, which contacts the rubber compound inside the mixing chamber and provides real-time feedback on temperature changes. During mixing, friction between the rubber compound and the thermocouple inevitably causes wear. Excessive wear will compromise the accuracy of temperature measurements, directly affecting the quality of rubber compounding. Currently, wear measurement is done manually. However, due to limitations in the thermocouple's installation location and the internal structure of the internal mixer, using ordinary measuring tools is difficult due to misalignment of the tools and irregular wear points, making it hard to obtain accurate wear values ​​and effectively control the thermocouple's lifespan and the stability of the rubber compounding process. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this utility model provides a special tool for measuring the wear of thermocouples in a mixing mill, thus solving the problem of stable operation of rubber compound testing spare parts.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a special tool for measuring the wear of thermocouples in a mixer, which is equipped with a measuring ruler. The measuring ruler is cylindrical in shape, and data scales are machined on the outer wall of the measuring ruler. A screw hole is machined on the wall of the measuring ruler, and a locking bolt is screwed into the screw hole through threaded fit. A compression spring is installed axially in the inner cavity of the measuring ruler, and a cone is connected to the outer end of the compression spring.

[0005] The beneficial effect of this utility model is that it eliminates data deviation caused by incorrect measurement during the measurement process, and ensures accurate data on the wear of thermocouple wear heads. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a schematic diagram of the structure of the present invention.

[0008] In the diagram: 1. Spiral iron of the mixing chamber of the internal mixer; 2. Thermocouple; 3. Data scale; 4. Wear-resistant head of the thermocouple; 5. Cone; 6. Compression spring; 7. Locking bolt; 8. Measuring ruler. Detailed Implementation

[0009] In the figure, the present invention is provided with a measuring ruler 8, which is a cylindrical structure. The outer wall of the measuring ruler 8 is machined with data scale 3, and the cylindrical wall of the measuring ruler 8 is machined with a screw hole. A locking bolt 7 is screwed into the screw hole through threaded fit. A compression spring 6 is installed axially in the inner cavity of the measuring ruler 8, and a cone 5 is connected to the outer end of the compression spring 6.

[0010] Thermocouple 2 passes through the installation channel inside the mixing chamber spike 1 of the internal mixer. The thermocouple wear-resistant head 4 at the end of thermocouple 2 is higher than the mixing chamber spike 1 and is used for contact detection of the rubber compound. A cylindrical measuring ruler 8 is held and fitted onto the thermocouple wear-resistant head 4. The cone 5 is tightly fitted onto the thermocouple wear-resistant head 4 by the thrust of thermocouple 2 and the force of the compression spring 6. The inner wall of the measuring ruler 8 and the outer surface of the thermocouple wear-resistant head 4 are in a clearance fit to prevent skewing. When the measuring ruler 8 is inserted to the point of contact with the mixing chamber spike 1, the locking bolt 7 on the measuring ruler 8 is tightened, and the measurement value is locked by rotation. The value is read according to the data scale 3 on the measuring ruler 8 and recorded. After comparing with the previously recorded data, the wear value of thermocouple 2 is calculated to achieve accurate measurement.

Claims

1. A special tool for measuring thermocouple wear in an internal mixer, equipped with a measuring scale, characterized in that, The measuring ruler has a cylindrical structure. Data scales are machined on the outer wall of the measuring ruler. Screw holes are machined on the wall of the measuring ruler, and locking bolts are screwed into the screw holes through threaded fit. A compression spring is installed axially in the inner cavity of the measuring ruler, and a cone is connected to the outer end of the compression spring.

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