Rubber and plastic internal mixer rotor body process plug

Abstract

The invention relates to a rubber and plastic internal mixer rotor body process plug, which improves the design of the rotor body process plug, divides the original process plug integrating positioning, fixing and sealing functions into two parts, and separately designs the two parts, namely a positioning pin and a sealing plug. The improved design of the positioning pin comprises the following steps of: 1, amplifying the diameter of the positioning pin from original phi 50mm to phi 75mm; and 2, the length of the positioning pin is increased from the original 70mm to 100mm; the purpose is to increase the matching area of the pin and the rotor body and the mandrel by about 2.2 times (40 pi cm<2>), reduce the torque force of the pin on the unit area of the rotor body by more than 50%, delay the crack generation time of the rotor body, and ensure the first layer of guarantee without water seepage. The sealing plug is made of a low-carbon steel material (excellent in welding performance) and covers the upper end face of the pin, the beveled edge and the surface layer of the rotor are welded into a whole, the plug is independently separated from the pin and is not affected by torque force transmitted by the pin, the effect of an inner and outer crack extending barrier can be effectively achieved, and the second layer guarantee that water seepage does not occur is guaranteed.

Description

technical field [0001] The invention relates to a structure for fixing and sealing between a rotor body and a shaft under an alternating load condition, in particular to a structure for positioning and sealing between a rotor body and a core shaft of a rubber-plastic internal mixer. Background technique [0002] After three or four years of application and production operation, the imported equipment has gradually experienced symptoms of "acclimatization". Especially in the rubber mixing section, the core component of the mixer, the rotor, has experienced water seepage many times, seriously affecting the quality of the product. [0003] After the investigation and analysis of the equipment manufacturer Krupp Germany, the conclusion is that the raw materials and working conditions used by the user do not meet the conditions of equipment use (that is, the peak value of the alternating impact load on the rotor under the working condition is high and frequent, causing the rotor a...

AI Technical Summary

Problems solved by technology

[0003] After the investigation and analysis of the equipment manufacturer Krupp Germany, the conclusion is that the raw materials and working conditions used by the user do not meet the conditions of equipment use (that is, the peak value of the alternating impact load on the rotor under the working condition is high and frequent, causing the rotor and other components life cycle is shortened)

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