In order to purify the resources and resources of the original fluids, a simple device for separating solid particles from liquids or gases, or for fully contacting different substances, speeding up the reaction time, can protect the normal operation of the equipment or the cleanliness of the air. When the fluid enters a filter element with a certain size of filter screen, the impurities are removed. Obstructed, clean streams flow through the filter element. Liquid filter element makes the liquid (including oil, water, etc.) so that the contaminated liquid is cleaned to the production and living needs of the state, that is, to make the liquid to a certain degree of cleanliness.