A large gear sealing device for a large mill

Abstract

The invention relates to a large-gear sealing device for a large-sized mill, which is characterized in that the outer side of a gear cover, which is close to a large gear end, is fixedly provided with a fine wool felt sealing layer and a press ring, wherein the fine wool felt sealing layer is arranged between the press ring and the gear cover, the lower end of the fine wool felt sealing layer is contacted with a supporting ring, the outer end of the supporting ring is provided with a stop edge, and the inner end of the supporting ring is fixed on a large gear. Along the rotation of the large gear, lubricating oil on the large gear can be splashed onto the junction between the supporting ring and the fine wool felt sealing layer, the radial seal which is formed by the fine wool felt and the supporting ring effectively prevents the leakage of the oil, and the supporting ring is provided with the stop edge, so that the lubricating oil can return to the tooth meshing place of the large gear. Since angle steel tip on the supporting ring is plugged into rubber asbestos inside a large gear groove to seal, so that the large gear is connected with the supporting ring into a whole, and the sealing effect is better than the sealing of an ordinary end surface. The lubricating oil is not easy to leak. The press ring is provided with a lower stop edge, so that dust can be effectively prevented from entering the large gear.

Description

Technical field [0001] The invention relates to a large gear sealing device for a large-scale mill, in particular to a large gear sealing device for a large-scale ball mill, and belongs to the field of mechanical engineering. Background technique [0002] At present, large gear seals for ball mills are generally divided into radial seals and end face seals. The end face seals can only play a role in dust prevention. Because the felt directly slides relative to the end face of the large gear, the oil leakage prevention effect is not good, so it is generally not used; The radial seal is effective in preventing dust and oil leakage. However, in addition to the effective tooth surface at both ends of the large gear, a convex edge must be cast and the circumferential surface must be machined to make the felt and the large tooth relatively slide in the circumferential direction to achieve a radial The sealing effect will invisibly increase the weight and cost of the large gear, and if ...

AI Technical Summary

Problems solved by technology

[0002] At present, the large gear seals used in ball mills are generally divided into radial seals and end face seals. The end face seals can only play a dust-proof role. Since the felt directly slides relative to the end face of the large gear, the oil leakage prevention effect is not good, so it is generally not used; Its radial sealing effect is good for dustproof and oil leakage prevention, but the two ends of the large gear must cast convex edges and process the circumferential surface in addition to the effective tooth surface, so that the felt can slide relative to the circumferential direction of the large tooth, so as to play a radial role. In this way, the weight and cost of the large gear will increase virtually, and if it is operated for a long time, the oil will easily seep out from the seal, and the leaked oil will accumulate in small amounts and eventually flow into the outside of the large gear

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