Hollow blade shaft-end sealing mechanism

Abstract

The invention relates to a hollow blade shaft-end sealing mechanism which comprises a packing seal and a mechanical seal arranged in the rear of the packing seal. A material collection box is arranged between the packing seal and the mechanical seal and communicated with the same, and a dust ring is arranged at the communicating position of the tail end of the material collection box and the mechanical seal. The material collection box is arranged between the packing seal and the mechanical seal, a traditional integral combination mode is changed to a split mode, the purpose is to separate the packing seal from the mechanical seal by the material collection box, the probability that solid granular matters such as dust enter the mechanical seal is lowered greatly by the aid of the material collection box, and accordingly sealing performance of the mechanical seal is improved, reliability of two-stage seal is improved, and sealing class is increased; meanwhile, by the aid of the material collection box, emptying time is prolonged, operation amount of workers is decreased, the workers can view material level in the material collection box through a sight glass hole, an empty valve is turned on to discharge excess materials after the material level reaches a certain height, and the hollow blade shaft-end sealing mechanism has high practicality.

Description

technical field [0001] The invention relates to a shaft end sealing mechanism, in particular to a shaft end sealing mechanism for preventing material leakage at the main shaft packing seat of a hollow paddle dryer. Background technique [0002] At present, the shaft end seal of the hollow paddle dryer includes a packing seat, a packing gland and a sealing mechanism composed of packing, and the shaft end sealing is mainly completed by the packing seal. Due to the small number of sealing channels in this sealing mechanism, there are phenomena of poor sealing and material leakage at the shaft end. [0003] The existing sealing methods include packing seal and mechanical seal. In order to increase the sealing performance, some people combine the two to form an integrated double seal. However, in this sealing structure, small solid particles such as dust are easy to be mechanically sealed. Accelerate the wear between the moving plate and the static plate in the mechanical seal, ...

AI Technical Summary

Problems solved by technology

[0003] The existing sealing methods include packing seal and mechanical seal. In order to increase the sealing performance, some people combine the two to form an integrated double seal. However, in this sealing structure, small solid particles such as dust are easy to be mechanically sealed. Accelerate the wear between the moving plate and the static plate in the mechanical seal, resulting in a short service life and loss of sealing performance

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