Filter by part of the housing, multiple filters, backwash agencies, and differential pressure controllers and other components. Transverse bulkhead within the housing cavity into which the upper and lower chambers, the upper chamber is equipped with multiple filter, so full of the filter space, significantly reducing the volume of the filter, installed under the chamber backwash sucker. Work, turbid fluid through the inlet into the next filter chamber filter, and filter through the bulkhead hole into the cavity. The gap is larger than the filter element impurities are trapped, net fluid across the gap to reach the upper chamber, and finally discharged from the outlet. Filter using high-strength wedge filter, through pressure control, timing control automatic cleaning filter. When the filter impurities accumulate in the filter surface caused by the pressure difference increases to a set value, or the timer reaches the preset time, the electric control box sends a signal to drive the backwash mechanism. When the filter backwash suction Handicap and imports are on, the drain valve is open, then the system pressure relief drainage, medial sucker with the emergence of a relative pressure below the filter cartridge lateral pressure of negative pressure zone, forcing the circulating water from the outside part of the net filter flows into the inside of the filter, the filter is adsorbed on the inner wall of the impurity particles flowing into and discharged from the discharge valve Rang tray. Specially designed internally generated filter cartridge makes jet effect, any impurities will be washed away from the smooth inner wall. When the filter pressure drop back to normal or timer setting time has elapsed, the whole process, the material continues to flow, backwash water consumption, to achieve a continuous, automated production. Filters are widely used in metallurgy, chemical, petroleum, paper, pharmaceutical, food, mining, electricity, urban water supply areas. Regeneration, such as industrial waste, recycling water filtration, emulsion, oil filter processing, metallurgical industry, casting water systems, blast furnace water systems, hot high-pressure water descaling systems. Is an advanced, efficient and easy to operate automatic filter. Development of a prototype air filter is an air filter respiratory protective device to protect people breathe and use. According to records automatic drain air filter, back in Rome a century, people in the time of purification of mercury to be protected by a mask made from hemp. After a long time for this, the air filter also made progress, but mainly as a respiratory protective device for some dangerous industries, such as the production of harmful chemicals. 1827 Brown discovered the movement of tiny particles, people have a better understanding of the mechanism of the air filter. The rapid development of air filters is the development of military industry and the electronics industry, closely related. During World War I, due to a variety of chemical agents used to asbestos fiber filter paper as a military gas mask filter smoke layer emerged. Glass fiber filter media for air filtration in October 1940 to obtain patents in the United States. 1950s, the United States of glass fiber filter paper production process conducted in-depth research, the air filter has been improved and developed. 60s straight-automatic sewage filter, HEPA filters come; the 1970s, the use of fine glass fiber filter paper as a HEPA filter media filter the water filter on the 013-micron particle filtration efficiency up to 99.9998%. Since the eighties, with the emergence of new testing methods, the use of filters to improve and enhance the performance requirements of the evaluation found that HEPA filter there is a serious problem, so he produced a higher performance ULPA filters. States are still trying to study, it is estimated there will soon be more advanced air filters. Water filters, Run-green (certified), Taiyuan, Shanxi filter provided by Run-Environmental Engineering Limited. Run-Environmental Engineering Co., Ltd. Shanxi (www.sxruntong.com) is a leader in Taiyuan, sewage treatment equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Run-environmental leadership with the staff warmly welcome all inquiries negotiations to create a better environment Runtong future.