Motor end cover sealing device capable of preventing dust and sand from entering interior of motor

Abstract

The invention relates to a motor end cover sealing device capable of preventing dust and sand from entering the interior of a motor. A plane and a positioning circle step are machined at the inner side of a motor end cover at the motor shaft extension end of the motor; a rubber oil seal seat is arranged on the positioning circle step; the rubber oil seal seat comprising a seat body and a cover plate is fixed on the motor end cover through bolts; a rubber oil seal is arranged in the rubber oil seal seat; a lip of the rubber oil seal faces to the motor end cover; the inner ring of the rubber oil seal closely clings to a motor shaft; and a tension spring ring is arranged in the groove lip of the rubber oil seal. The motor end cover sealing device can prevent dust and sand from entering the interior of the motor through a shaft hole gap of the motor end cover to damage a bearing part and burn out the motor and can also prolong the service life of the motor. The motor provided with the motor end cover sealing device is particularly suitable for occasions with more sand dust and dust.

Description

technical field [0001] The invention relates to a motor end cover sealing device, in particular to a motor end cover sealing device capable of preventing lime sand from entering the motor. Background technique [0002] The molding sand used in clay sand molding in foundry production should be mixed with a sand mixer. The commonly used ones are S1823B inclined disc automatic sand mixer and Y315M1-4 three-phase guide motor. Their motor shafts extend out of the motor end cover. Finally, the V-belt pulley usually drives the blades of the sand mixer to stir and mix. However, due to the process of feeding, stirring, and discharging of the sand mixer, there will be lime sand entering the motor through the shaft hole gap of the motor end cover and directly entering the bearing. In many places where there is a lot of dust and dust, there will also be dust and sand entering the motor through the shaft hole gap of the motor end cover and directly entering the bearing. Motor bearings ...

AI Technical Summary

Problems solved by technology

Motor bearings are generally lubricated with high-speed grease, and the ash and sand adhere to the grease to make the ball cage wear out first, the ball jumps, and the raceway will be stuck, causing the motor shaft to stop.

Too much instantaneous current will burn out the motor

Although the outer end of the shaft hole of the motor end cover is also equipped with felt at the beginning, there is no automatic compensation function after the felt is worn out, so it has no dustproof effect

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