A self-aligning roller unit

Abstract

The invention belongs to the field of structural design of stirring equipment, and in particular relates to a self-aligning roller shaft unit. The invention includes a stator shaft and a relatively rotatable rotary sleeve sleeved on the stator shaft. The mating section on the stator shaft and the rotary sleeve has a spindle-shaped structure with thin ends and a thick middle part. The sleeve structure of the spherical inner cavity; on the axial section through the axis of the stator shaft, the diameters of the busbars at the above-mentioned matching section of the stator shaft are consistent and the centers of the circles are located on the same horizontal plane, and the circle centers of the busbars at the cavity of the rotary sleeve are consistent with the stator shaft The center of the bus bar is arranged on the same plane, and the diameter of the bus bar at the cavity of the rotary sleeve is larger than the diameter of the above-mentioned bus bar of the stator shaft; There is a minimum clearance in the radial direction. It can be used with a conventional bearing frame to achieve the shaft fixing effect of the stirring shaft within the allowable deflection range, and has a long service life and stable and reliable operation.

Description

Technical field [0001] The invention belongs to the field of structural design of mixing equipment, and particularly relates to a self-aligning roller shaft unit. Background technique [0002] At present, in the mixing equipment produced and sold on the market, the bottom of the mixing shaft is basically a bottomless bearing device, and only the single shaft end of the top of the mixing shaft is fixed to achieve the effect of suspension mixing. When the above-mentioned stirring shaft is rotating, or the shaft body is skewed due to the installation error of the stirring shaft, or due to the unbalanced horizontal fluid power acting on the shaft during operation, or the radial load caused by the weight of the impeller on the stirring shaft Uneven, the bottom end of the stirring shaft will produce a quantitative swing. In actual work, the above-mentioned deflection of the stirring shaft is allowed to be within a certain range. Especially for the shaft seal when the sealing device i...

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