Novel body cover connection seal

Abstract

The invention discloses a novel body cover connection seal. The novel body cover connection seal comprises a body cover body, a sealing unit and a decompression unit are included; the body cover bodyis of a hollow structure, a fixed thread is arranged on the side surface of the inner cavity of the body cover body, a vacuum groove is formed in the side surface of the inner cavity of the body coverbody, air holes in different numbers are evenly formed in the side surface of the inner cavity of the body cover body, and penetrate the vacuum groove and the side surface of the inner cavity of thebody cover body, and the side surface of the inner cavity of the body cover body is fixedly connected with a substrate. The sealing unit comprises an exhaust pipe, a vacuum pump and an exhaust pipe. The vacuum pump is arranged on the upper surface of the substrate. The novel body cover connection seal is fixedly connected with an external object by the fixed thread, then the joint is sealed by thesealing unit, sealing is recyclable, and when the body cover needs to be removed, the body cover is unsealed by the decompression unit.

Description

technical field [0001] The invention relates to the technical field, in particular to a novel body cover connection sealing form. Background technique [0002] At present, the mainstream sealing method is the mechanical seal, but the pure mechanical seal cannot achieve zero leakage, and the large amount of wear is likely to cause pollution to the sealing medium or the working environment. [0003] The existing application number is CN201510333106.8, a new type of multi-stage magnetic liquid sealing device. By controlling the external pressure pump and the pressure control valve, when the shaft is rotating, the spiral groove on the shaft acts as a pressurizer, and at the same time, the The inflow of gas isolates the magnetic liquid from the sealed medium, avoids the mutual dissolution and pollution of the magnetic liquid and the sealed medium, and can meet the sealing requirements of zero leakage, but the sealing effect is general and cannot be recycled, and more importantly,...

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream sealing method is the mechanical seal, but the pure mechanical seal cannot achieve zero leakage, and the large amount of wear is likely to cause pollution to the sealing medium or the working environment

[0003] The existing application number is CN201510333106.8, a new type of multi-stage magnetic liquid sealing device. By controlling the external pressure pump and the pressure control valve, when the shaft is rotating, the spiral groove on the shaft acts as a pressurizer, and at the same time, the The inflow of gas isolates the magnetic liquid from the sealed medium, avoids the mutual dissolution and pollution of the magnetic liquid and the sealed medium, and can meet the sealing requirements of zero leakage, but the sealing effect is general and cannot be recycled, and more importantly, its cost High, and the sealing form of the device is relatively cumbersome, so it cannot be used for the connection of the body cover

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