Rotary joint with sealing function

Abstract

The invention discloses a rotary joint with a sealing function. The rotary joint comprises a rotary joint shell and a rotating shaft arranged inside the rotary joint shell, wherein a joint end cover is fixedly arranged at the end, close to the rotating shaft, of the rotary joint shell, the rotating shaft penetrates through a through hole in the middle of the joint end cover and is in clearance fitwith the through hole, an auxiliary sealing mechanism is arranged between the joint end cover and the rotating shaft, and an elastic sealing ring and a sealing cover form the auxiliary sealing mechanism. The rotary joint has the beneficial effects that the auxiliary sealing mechanism has an emergency sealing effect when a sealing mechanism inside the rotary joint fails, so that the phenomenon that a rotary joint is replaced in the production process so as to influence normal use of equipment and influence production is avoided.

Description

technical field [0001] The utility model relates to a rotary joint, in particular to a rotary joint with a sealing function. Background technique [0002] A rotary joint is a connection sealing device for fluid medium input from a stationary pipeline to a rotating or reciprocating device. It generally includes a rotary joint shell and a rotating shaft inside the rotary joint shell. There is a sealing device between them. One end of the shell is connected to the rotating shaft with a stationary pipe, and one end of the shaft is connected to the equipment that rotates or reciprocates. The medium flows through the joint to cool or heat the equipment. The rotary joint itself has good sealing performance. However, in the long-term use, the sealing structure inside the rotary joint will also cause failure and leakage during use due to various reasons such as aging or wear of the seal. Ordinary The rotary joint does not have an auxiliary sealing function, so the fluid flow must be...

AI Technical Summary

Problems solved by technology

The rotary joint itself has good sealing performance. However, in the long-term use, the sealing structure inside the rotary joint will also cause failure and leakage during use due to various reasons such as aging or wear of the seal. Ordinary The rotary joint does not have an auxiliary sealing function, so the fluid flow must be cut off immediately, the equipment must be stopped and the rotary joint replaced. However, in actual use, the equipment connected to the rotary joint is often used in a continuous production line. Replacement of a rotary joint will stop production. Especially in the case of heat conduction oil heating, the temperature must be lowered first, and then the heat conduction oil in the channel must be released before replacing the joint. The entire process of replacing the rotary joint is complicated and takes a long time, which seriously affects the normal production of the production line.

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