Environmental medium pressure adaptive sealing-packing pressing device

Abstract

A sealing packing compacting device adaptive to the pressure of the environmental medium, including a stuffing box, the stuffing box is provided with a stepped through hole, a rotating shaft passes through the stepped through hole and forms a filling cavity with the stepped through hole, and the sealing packing is filled in the filling cavity ;In the inner side of the stuffing box, a pressing plate is installed, and the inner end surface of the central through hole of the pressing plate is provided with a flange to match the filling cavity. The compact disk is connected, and an axial expansion bag is installed on the outer end surface of the compression disk, and the axial expansion bag is connected with the pressure medium outside the cabin through the supercharger through the pipeline. The invention uses the pressure of the environmental medium as the power source, saves energy, is green and environmentally friendly, and is suitable for low energy consumption requirements during long-term voyages; at the same time, it ensures the sealing performance and the normal work of the sealing packing; the pressing force changes rapidly following the environmental pressure, and responds quickly Good safety; the shut-off valve is set at an easy-to-operate position, which reduces the burden on personnel and has good safety.

Description

technical field [0001] The invention belongs to the technical field of ship sealing design, and in particular relates to a sealing packing compacting device adaptive to the pressure of the environment medium. Background technique [0002] Packing seal is a commonly used sealing method in marine products. It is often used to seal the transmission shaft passing through the pressure hull of the hull, such as the stern shaft, the tongue valve transmission rod, etc., to prevent seawater from entering the cabin. [0003] The packing seal relies on external force to compress the packing to achieve the sealing of the sealing part. Traditionally, this external force is generally realized by people tightening bolts, etc., which has the following disadvantages: 1) Human strength is limited, and it is difficult to generate a large compressive force to compress The packing forms an effective seal, especially when the seawater pressure is high, it cannot prevent a large amount of seawater...

AI Technical Summary

Problems solved by technology

[0003] The packing seal relies on external force to compress the packing to achieve the sealing of the sealing part. Traditionally, this external force is generally realized by people tightening bolts, etc., which has the following disadvantages: 1) Human strength is limited, and it is difficult to generate a large compressive force to compress The packing forms an effective seal, especially when the seawater pressure is high, it cannot prevent a large amount of seawater from entering the cabin; 2) The manual compaction speed is slow, it is difficult to quickly compact the packing, and the seal is not timely; 3) Once the sealing part leaks , form water mist, and it is difficult for personnel to access the sealing packing of the sealing part; 4) If the sealing packing pressing force is too large, it is difficult to ensure the normal use of the transmission shaft, and at the same time accelerate the wear of the sealing packing, which may cause the shaft to be stuck or the packing to be damaged. Friction generates high temperature and damages

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