Horizontal spiral unloading sedimentation centrifuge airtight explosion-proof structure

Abstract

The invention discloses an airtight explosion-proof structure of a horizontal spiral unloading sedimentation centrifuge, which comprises a sealing seat located between the bearing seat of the centrifuge and the machine cover and fitted on the end cover of the drum of the centrifuge with clearance fit, and the sealing seat is fixedly mounted on There is a dynamic sealing structure between the sealing seat and the drum end cover, a static sealing structure between the sealing seat and the machine cover, and a dynamic sealing structure between the machine cover and the drum end cover to prevent materials from entering. The barrier sealing structure of the structure and the static sealing structure; the dynamic sealing structure includes an air connection hole arranged on the sealing seat, and the two sides of the air connection hole are respectively provided with at least one graphite ring seal between the sealing seat and the centrifuge drum end cover and At least one polytetrafluoroethylene ring seal, the graphite ring seal is located between the polytetrafluoroethylene ring seal and the air hole. Not only can it prevent volatilization of the solvent from leaking out of the machine cover and prevent air from entering the inside of the centrifuge, but it will not affect the stability and reliability of the centrifuge.

Description

technical field [0001] The invention belongs to the technical field of sealing, in particular to an airtight explosion-proof structure of a horizontal spiral unloading sedimentation centrifuge. Background technique [0002] In some special chemical fields, if the liquid phase is methanol, isopropanol and acetone, which are flammable and explosive substances, the selected decanter centrifuge must have a closed air-tight structure, and inert gas should be injected to prevent solvent volatilization and leakage Out of the hood, but also to block air from entering the inside of the centrifuge. [0003] At present, the air seal structure of small-sized horizontal screw discharge sedimentation centrifuges generally adopts mechanical seals, and if the air seal structure of large-scale horizontal screw discharge sedimentation centrifuges also uses mechanical seals, it will inevitably lead to complex structures, and It will increase the axial dimension, which will be unfavorable to t...

AI Technical Summary

Problems solved by technology

[0003] At present, the air seal structure of small-sized horizontal screw discharge sedimentation centrifuges generally adopts mechanical seals, and if the air seal structure of large-scale horizontal screw discharge sedimentation centrifuges also uses mechanical seals, it will inevitably lead to complex structures, and It will increase the axial dimension, which will be detrimental to the stability and reliability of the centrifuge

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