Ceramic bearing type reaction kettle

Abstract

The invention provides a ceramic bearing reaction kettle which comprises a kettle body, a power plant, a power transmission device, a shaft coupling, a stirring shaft and a stirrer. The ceramic bearing type reaction kettle is characterized in that a base supporting bearing consisting of a kettle body base plate, a support rack, a ceramic shaft, a ceramic ring and the stirring shaft is arranged toform an antifriction bearing operating mode by taking the stirring shaft as an inner ring, the ceramic shaft and the ceramic ring as ball bearing, the support rack as a ball bracket and the reaction caldron base plate as an outer ring. The invention prevents the oversize radial swing of the stirring shaft during operation, avoids the radial swing of the stirring shaft exceeding the permitted radial deviation of the sealed position of the stirring shaft, plays a role in avoiding swing, ensures the safe operation of the stirring reaction kettle, is provided with a base support device without lubrication and prolongs the service life of the base support by utilizing the wearable performance of ceramic, and simultaneously, a planetary type structure is suitable for reaction media containing solid materials.

Description

technical field [0001] The invention belongs to the technical field of stirred reactors, in particular to a stirred reactor whose bottom supports adopt ceramic bearings. Background technique [0002] Stirring reactor is an indispensable load-bearing pressure vessel in the production process of chemical industry and petrochemical industry. Stirring reactor is composed of reactor body, stirring transmission device, agitator, etc. The power is transmitted from the stirring transmission device to the stirring shaft. The stirring shaft drives the agitator to run to meet the requirements of stirring medium materials to complete various chemical process requirements. The stirring shaft is generally in a cantilever beam structure, which is convenient for installation, maintenance, and reduces the impact of medium corrosion. The cantilever of the large stirring reactor is too long , the diameter of the agitator is large, and the power consumption is large, so the torsion of the agita...

AI Technical Summary

Problems solved by technology

[0002] Stirring reactor is an indispensable load-bearing pressure vessel in the production process of chemical industry and petrochemical industry. Stirring reactor is composed of reactor body, stirring transmission device, agitator, etc. The power is transmitted from the stirring transmission device to the stirring shaft. The stirring shaft drives the agitator to run to meet the requirements of stirring medium materials to complete various chemical process requirements. The stirring shaft is generally in a cantilever beam structure, which is convenient for installation, maintenance, and reduces the impact of medium corrosion. The cantilever of the large stirring reactor is too long , the diameter of the agitator is large, and the power consumption is large, so the torsion of the agitator shaft is large, and the effect of the centrifugal force of the agitation is also increased. Often, the agitator shaft is twisted, and the swing of the agitator shaft exceeds the allowable range of the shaft seal, causing agitation reaction. The shaft seal of the kettle is damaged, so that the stirred reactor cannot work normally. In actual production, in order to prevent the radial deflection of the stirring shaft from being too large during operation, which exceeds the allowable radial deviation of the shaft seal of the stirring shaft, to ensure that the equipment is normal In operation, a bottom support is added between the lower end of the stirring shaft and the bottom of the reactor to improve the support conditions of the large-scale stirred reactor, reduce the deflection of the stirring shaft, and ensure that the radial deflection of the stirring shaft operates within the allowable range. The support can be divided into three-leg type, bottom flange type, labyrinth type, and detachable type according to different methods. Now the sliding operation mode between the rotating sleeve and the fixed sleeve is mainly used. The addition of the bottom support changes the support conditions of the stirring shaft. At the same time, the fulcrum of the stirring shaft is also increased, which puts forward very high requirements for the installation of the bottom bearing. If the installation is not good, it will increase the eccentricity, aggravate the wear of the bearing and generate vibration. In addition, the bottom bearing uses liquid medium in the reaction medium. Lubrication, but when there are small solid particles, they will enter the bottom bearing and cause the bearing to wear, block and seize

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