Maintenance-free air filter assembly

Abstract

The invention relates to a maintenance-free air filter assembly. The maintenance-free air filter assembly comprises a housing, a pre-filter element, a main filter element, a pressure relief cavity body, a diversion cavity body, a bottom cover, a subsidiary bottom cover, an air passage and a high-pressure pipe, the housing is fixed to a bracket. A main gas opening is formed in the housing. The outer side of the main gas opening is provided with a first filter device. The pre-filter element is provided with a pre-filter cover. The inner side of the pre-filter element is sleeved with the diversion cavity body. The inner ring of the bottom cover is covered by the subsidiary bottom cover. A gas passage is arranged between the bottom cover and the subsidiary bottom cover. The side face, oppositeto the outside of the bottom cover, of the air passage is provided with a jet exhaust. The jet exhaust is connected with the high-pressure pipe. The high-pressure pipe is connected with a rushing port. The maintenance-free air filter assembly has the characteristics of application is convenient, sealing and reliability are achieved, the cost is low, the size is small, the filter precision is high, engine grinding in advance is prevented efficiently, the service life of a filter is prolonged, and the energy consumption in production is lowered.

Description

technical field [0001] The invention relates to a sealed automatic dust-removing air filter device for vehicles, in particular to a maintenance-free air filter assembly. Background technique [0002] At present, engineering vehicles mostly use a composite filter system, which consists of a pre-filter part and a main filter part. The filter efficiency of the pre-filter part is very low, resulting in a large dust in the main filter part, which needs to be cleaned manually, causing a lot of work for maintenance personnel. When in use, the filter of the main filter part must be often removed and cleaned with an air gun. During the cleaning operation, there are special requirements for gas pressure, dust removal angle, dust removal direction, etc., and the technical level of maintenance personnel is uneven, and they often make mistakes Maintenance will cause the filter to fail, causing early wear and tear of the engine and increasing the cost of the vehicle. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0002] At present, engineering vehicles mostly use a composite filter system, which consists of a pre-filter part and a main filter part. The filter efficiency of the pre-filter part is very low, resulting in large dust in the main filter part, which needs to be cleaned manually, causing a lot of work for maintenance personnel. When in use, the filter of the main filter part must be often removed and cleaned with an air gun. During the cleaning operation, there are special requirements for gas pressure, dust removal angle, dust removal direction, etc., and the technical level of maintenance personnel is uneven, and they often make mistakes Maintenance, leading to filter failure, causing early engine wear and increasing vehicle use costs

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