Open double filter

Abstract

The invention relates to an open double filter, comprising a barrel and a filter mechanism arranged inside the barrel, wherein the top of the barrel is opened; a water inlet pipe is arranged above the top of the barrel; the filter mechanism comprises two layers of filter plates which are arranged up and down; an upper-layer filter material is arranged on the top surface of the upper-layer filter plate; a lower-layer filter material is arranged on the top surface of the lower-layer filter plate; a plurality of filter heads are uniformly arranged on the panels of the upper-layer filter plate and the lower-layer filter plate respectively. The open double filter is simpler than a pressure filter in structure, convenient to operate, small in weight, easy to fabricate, and low in cost; the upper part is open, so that the filter material can easily enter the filter.

Description

technical field [0001] The present invention relates to a filter. Background technique [0002] The pressure filter is a widely used water treatment equipment. Its main features are hemispherical heads on the top and bottom, and a cylinder in the middle, which is airtight. Due to the relatively simple structure and convenient management, the filtered water can be directly sent to the water point, and there are ready-made products on the market, which are widely used in factories, mines, community water supply and reclaimed water reuse. However, due to its fully enclosed and fully sealed features, it is subject to certain restrictions in use, and it has the following disadvantages: ① It is a sealed structure, and the coagulation cannot be observed in time after adding the coagulant As a result, it is difficult to control the dosage of coagulant, which affects the quality of effluent water; ② When treating groundwater, the method of filling air with air compressor is general...

AI Technical Summary

Problems solved by technology

However, due to its fully enclosed and fully sealed features, it is subject to certain restrictions in use, and it has the following disadvantages: ① It is a sealed structure, and the coagulation cannot be observed in time after adding the coagulant As a result, it is difficult to control the dosage of coagulant, which affects the quality of effluent water; ② When treating groundwater, the air compressor is generally used to inject air to dissolve oxygen, which has high equipment costs, complicated management, and high operating costs. When some raw water When it is necessary to remove CO2 and increase the pH value, the above method will not work, and other aeration equipment needs to be built

However, this device still cannot overcome the above-mentioned three shortcomings, such as the difficulty in entering and exiting the filter material, and the difficulty in maintenance.

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