The new type of water lubricated ship shaft end face sealing device includes a fixed seat, a tire, a gland, a wear-resistant shaft sleeve, an end face sealing cover, a sealing ring, and a spare sealing ring. The wear-resistant shaft sleeve passes through the entire sealing device, and the inner hole of the wear-resistant shaft sleeve is fixedly connected to the ship shaft. The end face sealing cover is a split type structure, and the spare sealing ring is connected to the wear-resistant shaft sleeve placed on the outside of the entire sealing device near the ship collapse end.

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Drawing of marine water lubrication stern shaft end face sealing apparatus

After adopting the above structure, the wear-resistant shaft sleeve is set to pass through the entire sealing device, and the inner hole of the wear-resistant shaft sleeve is fixedly connected to the ship shaft, so that the inflated tire is directly wrapped on the wear-resistant shaft sleeve, avoiding the defect of ship shaft wear caused by direct contact between the tire and the shaft, and extending the service life of the shaft; At the same time, due to the setting of the end face sealing cover as a split structure, on the one hand, when the end face sealing cover is severely worn, it can be removed, reprocessed, and reused, thereby overcoming the inconvenience of maintenance and replacement caused by the original overall structure, and the defect of only replacing the end face sealing cover as a whole once wear occurs and affects the sealing performance, which has the advantages of convenient and fast maintenance and replacement; On the other hand, when it is necessary to replace the spare sealing ring, the end face sealing cover can be removed from the split surface, the damaged sealing ring can be removed, and then the spare sealing ring can be pushed to the original sealing ring workstation. This has the advantages of convenient and fast replacement of the sealing ring. Therefore, this setting not only extends the service life of the sealing device, but also facilitates maintenance and replacement; Furthermore, by attaching the spare sealing ring to the wear-resistant shaft sleeve located near the ship's end outside the entire sealing device, the spare sealing ring is separated from seawater, overcoming the defect of corrosion caused by direct immersion of the original spare sealing ring in seawater, prolonging the service life of the spare sealing ring, thereby correspondingly improving the service life of the entire sealing device and increasing the maintenance space of the sealing device.