Mechanical sealing device capable of adapting to radial movement of shaft for stirrer

Abstract

The invention relates to the technical field of mechanical sealing, and discloses a mechanical sealing device for a stirrer capable of adapting to radial movement of a shaft, the mechanical sealing device for the stirrer capable of adapting to the radial movement of the shaft comprises a sealing mechanism, the sealing mechanism comprises a primary gland, and a prompt mechanism is inserted into the sealing mechanism. According to the mechanical sealing device capable of adapting to the radial movement of the shaft and used for the stirrer, a first sealing cavity and a third sealing cavity are formed between the static ring and the second-stage gland and between the static ring and the fourth-stage gland, and then the static ring is matched with a second sealing cavity formed between the transmission sleeve and the third-stage gland for use, so that when the shaft sleeve moves along with the radial movement of the stirring shaft, an enough buffer space is provided; and the first sealing cavity, the third sealing cavity and the second sealing cavity are separated by the static rings, so that the first sealing cavity and the third sealing cavity can play a temporary leakage-proof function, and the effects of being capable of adapting to radial movement of the stirring shaft and high in sealing quality are achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a mechanical seal device for mixers capable of adapting to radial movement of shafts. Background technique [0002] Mechanical seal refers to a device that prevents fluid leakage and is composed of at least one pair of end faces perpendicular to the axis of rotation under the action of fluid pressure and the elastic force of the compensation mechanism and the cooperation of auxiliary seals to prevent fluid leakage. Classification can be divided into seals for pumps, seals for kettles, seals for compressors, etc. Seals for kettles are often used with mixers. [0003] The existing mechanical seal device for mixers will move radially during use, which will accelerate the wear between the mixer shaft and the mechanical seal, which will lead to leakage of the sealing medium and failure of the sealing device for a long time. At the same time, the existing mechanical seal devic...

AI Technical Summary

Problems solved by technology

[0003] The existing mechanical seal device for mixers will move radially during use, which will accelerate the wear between the mixer shaft and the mechanical seal, which will lead to leakage of the sealing medium and failure of the sealing device for a long time. At the same time, the existing mechanical seal device does not have Leakage protection function, when the sealing medium leaks, it will pollute the product, and in severe cases, it will cause a safety accident

Images