Sealing system of submerged pump

Abstract

The invention discloses a sealing system of a submerged pump. The sealing system of the submerged pump comprises a pump shaft located in a housing; the pump shaft is provided with a first bearing anda second bearing which are arranged in the axial direction of the pump shaft in a spaced manner; a mechanical seal is arranged between the pump shaft and the housing; the portion, below the mechanicalseal, of the pump shaft and the housing are sealed through a packing; the mechanical seal and the packing are both located above a bottom plate; the situation that lubricating oil used for the mechanical seal directly leaks into media is avoided, that is to say the situation that the lubricating oil can leak into an area between the packing and the housing is avoided; it is prevented that the media are polluted, and the media cannot volatilize into the work environment; and in this way, the life safety of workers is guaranteed, and it is guaranteed that volatile and toxic media are safely conveyed.

Description

technical field [0001] The invention relates to the technical field of submerged pump manufacturing, in particular to a sealing system of a submerged pump. Background technique [0002] In some fields, it is necessary to pump easily and toxic media, such as titanium tetrachloride solution, which is generally pumped through a submerged pump. Only one mechanical seal is installed on the pump shaft of the existing submerged pump. It is used to prevent volatile medium from entering the working environment through the gap between the pump shaft and the bearing seat, and to ensure the personal safety of the staff. However, when the mechanical seal is damaged, on the one hand, the lubricating oil used for the mechanical seal will leak directly. Into the medium, causing a large amount of medium to be polluted; on the other hand, the medium will directly volatilize into the working environment, threatening the life safety of the staff. Contents of the invention [0003] The object...

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Problems solved by technology

[0002] In some fields, it is necessary to pump easily and toxic media, such as titanium tetrachloride solution, which is generally pumped through a submerged pump. Only one mechanical seal is installed on the pump shaft of the existing submerged pump. It is used to prevent volatile medium from entering the working environment through the gap between the pump shaft and the bearing seat, and to ensure the personal safety of the staff. However, when the mechanical seal is damaged, on the one hand, the lubricating oil used for the mechanical seal will leak directly. into the medium, causing a large amount of medium to be polluted; on the other hand, the medium will directly volatilize into the working environment, threatening the life safety of the staff

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