The large rocks and big wastes in falling sludge could be cleaned out by the rolling cleaning device of sludge processing plant,and be fallen down to the dreg-out machine.

The Experience Research of the Self-circulation Self-cleaning Evaporators of High Efficiency;

Research of Self-cleaning Technique of Crystallizing Salt Adhered to the wall of Heating Tube in Salt Evaporator;

Dynamics Research on the Driving Force Moment of the Self-cleaning Twisted Strip with Inlet Contrarotation Enhancement and Engineering Application;

A kind of automatic cleaning technical equipment centered on the technology of a high-pressure water jet was introduced in the paper.

The paper discusses the present situation of cleaning equipment for high-speed trains in both China and foreign countries, introduces the research results of the automatic cleaning equipment for the high-fast-speed motor train unit, and analyzes the flowchart, brush sets, automatic control system and their successful utilization in the engineering practice.

This paper introduced the cleaning process of wastewater filter in high-temperature superconducting magnetic separation for purification of wastewater, and designed the fully automatic cleaning system of the wastewater filter based on PLC.

Economic loss caused by fouling of condensers equipped for steam turbines and the self-cleaning technology with twisted strips;

0 m/s,and it is difficult to have self-clean by using plastic twisted tape.

The natural cycle and self-cleaning evaporators with twisted tapes are the most ideal as for solving the fouling problem.