Technological method for cleaning dust in air duct in motor train unit floor

Abstract

The invention provides a technological method for cleaning dust in an air duct in a motor train unit floor. The technological method comprises the following steps: extending a long air gun into the air duct via an air duct inlet in a motor train unit to blow dust in the air duct; then withdrawing the long air gun, and using cloth bag devices to protect all air return holes in the motor train unit; putting a flexible shaft machine and a dust cleaning device into an air duct inlet below the motor train unit and connecting to an air supply power source; extending the flexible shaft machine from the air duct inlet below the motor train unit, so that a brush of the flexible shaft machine is in contact with the inner surface of an air duct, starting forward-direction rotation to scatter dust in the air duct, and then withdrawing from the air duct inlet; putting the brush of the flexible shaft machine to the air duct inlet below the motor train unit again, and starting reverse-direction rotation to scatter dust; connecting the dust cleaning device with an air duct inlet below the motor train unit at the end I, and plugging an air duct inlet below the motor train unit at the end II with the cloth bag device; starting the dust cleaning device to blow dust; loosening the dust cleaning device from the air duct inlet to clean dust at the air duct inlet; and removing the cloth bag device in the motor train unit and cleaning collected dust. The technological method can be used for cleaning adhesive dirt in the air duct, and the operation method is simple and reliable as well as convenient and effective.

Description

technical field [0001] The invention relates to the technical field of air duct cleaning for EMUs, in particular to a process for cleaning the dust in the air ducts of the EMU floor, which is suitable for special structures with long lengths of air ducts, small air duct openings and large air volume requirements in the EMU floor . Background technique [0002] The air duct of the EMU is composed of two parts: the air duct on the car and the air duct under the car. The two parts are connected through the welded air duct of the car body. 1. The air supply duct on the car flows into the compartment, and then flows back to the air conditioner through the return air duct on the car and the return air duct under the car to form a cycle. After the long-term operation of the EMU, due to the continuous air supply passing through the air duct, dust will accumulate on the inner wall of the air duct, and the dirt with strong adhesion will accumulate over time, although the air quality ...

AI Technical Summary

Problems solved by technology

After the long-term operation of the EMU, due to the continuous air supply passing through the air duct, dust will accumulate on the inner wall of the air duct, and the dirt with strong adhesion will accumulate over time. Although the air quality in the compartment is good when the EMU is currently operating online , but as time goes on, the accumulation of dust and dirt will continue to increase, which will seriously affect the air quality in the compartment

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