Sealing ring

Abstract

The invention discloses a sealing ring which is an integrated part made of rubber. The sealing ring is characterized in that the sealing ring comprises a main body portion and a projection portion which have the same axis as the central axis of the sealing ring; the main body portion is in the shape of an integral circular ring plate and the projection portion is in the shape of an integral circular truncated cone shell; the projection portion is located in the center of the main body portion and internally connected to the main body portion; the inner cavity of the circular truncated cone shell-shaped projection portion serves as a coil outlet hole which is namely the central hole of the sealing ring and the axis of the central hole is namely the central axis of the sealing ring; a linear kerf which serves as an adjusting seam is arranged on the sealing ring, the self-rear portion of the linear kerf is cut open along the direction from upper right to left lower, the front end of the adjusting seam is communicated with the coil outlet hole, and the rear end of the adjusting seam is communicated with outside space; two sections which are formed into the adjusting seam of the sealing ring abut against each other and an included angle alpha which is formed by each of the sections and the central axis of the sealing ring is 20 degrees to 70 degrees.

Description

technical field [0001] The invention relates to a sealing ring, in particular to a sealing ring used in a lower sealer of a vulcanization pipeline. Background technique [0002] The lower sealer is the device used for sealing the lower end of the vulcanization pipeline of the nitrogen cross-linking unit. Together with the upper sealer, it forms a closed system for the entire pipeline, enabling the cable to achieve continuous vulcanization and cooling processes in the pipeline. Chinese patent document CN202388768U (patent application number 201120541570.3) discloses "a lower closure device". This kind of lower closure device adopts a secondary sealing device, which pushes the connecting rod and the gland through the oil cylinder, compresses the gasket, and seals the tail of the equipment pipeline. The cable outlet of the cable is sealed, which makes up for the disadvantages of the original equipment such as air leakage and lax sealing, and the sealing effect is better. It is ...

AI Technical Summary

Problems solved by technology

When connecting the pull wire and the extruded cable, the sealing of the joint is very important. Once the steam enters the cable, it will seriously affect the quality of the cable and cause serious waste

In order to ensure the tightness of the joint between the traction wire and the extruded cable, some coating and sealing treatment will be done on the joint. The outer diameter of the wrapped joint is usually larger than the wire diameter of the extruded cable; When the joint passes through the lower closure, if the pore diameter of the conical gasket 6-4 is too small, it may cause the joint to be stuck, resulting in equipment jamming. If the pore diameter of the conical gasket 6-4 is too large, It will seriously affect the tightness of the lower closure, the water level in the return tank will rise, and the water level in the cold water section of the vulcanized pipe will decrease, failing to achieve the purpose of cooling

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