Method for carrying out inflating and flushing on filter

Abstract

The invention relates to a method for carrying out inflating and flushing on a filter. The invention does not depend on direct impact of an airflow and only needs to uniformly distribute gas on the bottom of the filter. The principle of the invention is that in the backwashing process, when air bubbles and water move upwards, the air bubbles are broken and polymerized continuously after being cut by filter material particles and being torn by the water flow, a water-phase medium and a gas-phase medium surrounding the filter material particles are rapidly converted to form a high-speed turbulent flow, then the bubbles crack to form impact to make the filter material particles collide mutually, and various mechanisms make impurities adsorbed on the surface of a filter material drop off so as to realize carrying out complete flushing on the heavy-duty filter material. The method has low requirement on the inlet pressure and the flow, wherein the gas source pressure is 0.5 to 2 times of the flushing pressure; and the air flow is 0.5 to 2.5 times of the flushing water flow. A microminiature air pump can meet the requirements and can be integrated with a water purifying machine main body. The method for carring out inflating and flushing on the filter has the advantages of low working noise, safe operation and low manufacturing and operating cost, solves the problem of flushing the heavy-duty filter material in the filter under the condition that the working environment is limited and is particularly suitable for civil and domestic water purification systems.

Description

technical field [0001] The invention relates to a method for cleaning filter material in water treatment, in particular to the cleaning of heavy filter material and highly accumulated filter material of a terminal filter device. Background technique [0002] Filter material is an important filter medium in water treatment, which can filter out harmful substances and adjust the hardness of water. After the filter device works for a period of time, the filter material particles and their internal pores are covered and blocked by sediments, adsorbates, chemical and electrochemical reactants, and organism corpses, resulting in the filter material gradually losing its water treatment efficiency. Rinse and regenerate to ensure the long-lasting and stable water output capacity and water quality of the water treatment device. [0003] Since the conventional flushing flow rate is generally less than twice the maximum working flow rate, this flushing method can only meet the cleaning...

AI Technical Summary

Problems solved by technology

[0008] 1. The setting of the nozzle greatly increases the complexity of the filter;

[0009] 2. The airflow pressure is required to be high, and the pressure resistance performance of the device is high, which may easily lead to overpressure damage to components and seal leakage. Once the sewage system is blocked, there may be a risk of bursting of the water treatment container;

[0010] 3. Large air intake is required, and an air pump with large power and volume is required;

[0011] 4. It is easy to cause the filter material to be broken

[0012] 5. Not only the cost has risen sharply, but it also takes up a lot of space and produces a lot of working noise

[0013] Therefore, difficult to implement in domestic and commercial water treatment systems

[0014] The reason for these problems is that there are defects in its implementation method and the mechanism used, mainly because it only focuses on the macroscopic and orderly effects of the obvious high-pressure air flow, and does not expect or ignore the three-phase material of gas, water, and solid filter particles. The microcosmic, disordered motion and its interaction mechanism between

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