Stern shaft sealing device

Abstract

The invention belongs to the technical field of ships and relates to a stern shaft sealing device. The stern shaft sealing device comprises an installation base; an air bag is fixed into an inner hole of the installation base; the installation base is provided with a first sealing ring bracket which is connected with a second sealing ring bracket through a connecting piece; the outer end of the second sealing ring bracket is fixedly connected with a sealing ring; the end surface of the sealing ring is provided with a supporting ring in an attached mode; the supporting ring is connected with a transmission ring; an emergency sealing body is installed between the installation base and the first sealing ring bracket and is a whole circle defined by a plurality of equational circular-arc structures; and each circular-arc structure can move in the radial direction. The stern shaft sealing device has an adjustable emergency sealing function, and an emergency mechanism can be repeatedly used; adjusting is convenient, and the service life is long; and thus, the emergency capacity of a ship during sailing is greatly improved, and the effect that the ship can continue to keep sailing for a long time after a main stern shaft sealing body breaks down during distant sailing is ensured.

Description

technical field [0001] The invention belongs to the technical field of ships and relates to a stern shaft sealing device. Background technique [0002] The traditional anti-shock type end face sealing device of ship stern shaft (see patent No. 200810024665.0) will lead to a gradual increase in the amount of water leakage due to the increase in the wear of the relative moving surface of the sealing friction pair, and it is harmful to the harsh environment in the water, such as sediment Poor adaptability, etc., will cause the dynamic and static friction pair of the sealing device to fail in severe cases, affecting the normal navigation of the ship. Contents of the invention [0003] Aiming at the above problems, the present invention provides a stern shaft sealing device, which has an emergency sealing function. [0004] According to the technical solution of the present invention: a stern shaft sealing device, it is characterized in that it includes a mounting base, an air...

AI Technical Summary

Problems solved by technology

[0002] The traditional anti-shock type end face sealing device of ship stern shaft (see patent No. 200810024665.0) will lead to a gradual increase in the amount of water leakage due to the increase in the wear of the relative moving surface of the sealing friction pair, and it is harmful to the harsh environment in the water, such as sediment Poor adaptability, etc., will lead to failure of the dynamic and static friction pair of the sealing device in severe cases, affecting the normal navigation of the ship

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