Dynamic sealing structure of rotary shaft

Abstract

The invention discloses a dynamic sealing structure of a rotary shaft. The dynamic sealing structure comprises a rotary shaft. The rotary shaft is provided with an end cap, a bearing cap and an abrasive wheel seat in turn. The end cap is fixedly connected with the bearing cap by bolts. A first water storage and drainage channel is arranged on the side of the bearing cap connected with the abrasive wheel seat. A second water storage and drainage channel is arranged in the abrasive wheel seat which forms a slope with the outer surface of the second water storage and drainage channel. The first water storage and drainage channel and the second water storage and drainage channel cooperate to define a labyrinth groove, so as to achieve the function of sealing. The abrasive wheel seat is connected with the rotary shaft in a key joint manner. By The dynamic sealing structure, after the accumulation of grinding cooling liquid, the clogging situation does not occur under any mounted state of a glass edging machine. At the same time, the abrasive wheel seat and the rotary shaft are connected with in a key joint manner, and the holes opened by the key on the abrasive wheel seat are not connected with each other, so that the cooling liquid is prevented from flowing into the interior of a motor. The dynamic sealing structure is simple in structure, easy to process and good in applicability.

Description

technical field [0001] The invention relates to a rotary shaft dynamic sealing structure, in particular to a rotary shaft dynamic sealing structure used on a glass edge grinder. Background technique [0002] Glass edging machine is one of the earliest and most widely used cold processing equipment in glass machinery deep processing equipment. It is mainly suitable for the processing of furniture glass, architectural glass and craft glass, and plays a role in grinding and chamfering the bottom edge and chamfer of ordinary flat glass. The role of polishing. The grinding head can be adjusted at any angle between -45°-225°. A grinding head needs to be equipped with a motor drive, so the motor installation angle range is very large, and the dynamic seal of the motor shaft needs to be able to meet the protection requirements in every installation state. Requirements, the current domestically produced motor protection adopts a skeleton seal ring installed at the shaft hole of the ...

AI Technical Summary

Problems solved by technology

The grinding head can be adjusted at any angle between -45°-225°. A grinding head needs to be equipped with a motor drive, so the motor installation angle range is very large, and the dynamic seal of the motor shaft needs to be able to meet the protection requirements in every installation state. Requirements, the current domestically produced motor protection adopts a skeleton seal ring installed at the shaft hole of the end cover, and a labyrinth ring of about 1mm is added between the grinding wheel seat and the end cover for sealing. The above can achieve a better sealing effect, but it is not ideal when the shaft extension is installed at or below the horizontal position. When installed horizontally, the coolant will flow along the labyrinth to the shaft and seep into the motor bearing along the shaft. The bearings are corroded indoors, and the coolant will remain in the labyrinth ring groove when it is below the horizontal position, and the glass powder mixed in the coolant will solidify and block the labyrinth groove when the motor stops and does not run, so that the motor cannot rotate and burns out.

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