Solutions for shaft end sealing of existing concrete mixers

Concrete mixing device is an essential device commonly used in construction, mainly composed of brackets, driving devices, mixing drums, etc. The main shaft of the mixing drum needs to be provided with shaft end seals. However, the existing shaft end seal is only provided with one sealing device, which has short service time and high replacement frequency, and because the sealing device is a built-in type, replacement and maintenance are troublesome. Therefore, the quality of the sealing performance of the shaft end of the mixer is a special concern of the construction unit.

Now we propose a concrete mixer shaft end seal, which solves the problems of short service time and high maintenance and replacement frequency of the single rod seal device in the prior art, including the static ring hoop, and the side wall of the static ring hoop is provided with mixed oil injection A skeleton oil rod seal and a floating oil seal are arranged in the inner cavity of the static hoop, and a sealing ring is also arranged between the floating oil rod seal and the inner wall of the static hoop.

It also includes a movable hoop, a sealing ring and a floating oil seal are also arranged in the inner cavity of the movable hoop, a first dust ring is arranged between the outer wall of the movable hoop and the inner wall of the static hoop, and the outer wall of the movable hoop and the seal A second dustproof ring is arranged between the pressure plates, and the static ring hoop and the sealing pressure plate are connected by bolts. The utility model is provided with two sealing devices: a skeleton oil seal, a floating oil seal, a first dustproof ring and a second dustproof ring, which have good sealing effect and prevent mortar leakage.

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