Water purifier with hollow microfiltration membranes

Abstract

The invention relates to a water purifier with hollow microfiltration membranes. The water purifier comprises a cover, a mandrel, hollow microfiltration membranes and a case, wherein the cover is connected with the case; a water inlet and a water outlet are arranged on the left and right sides of the cover respectively; a projecting hollow trough is arranged inside the cover; the mandrel is inserted into the hollow trough; hollow small holes are uniformly formed in the surface of the mandrel; a plurality of hollow microfiltration membranes pass through the mandrel uniformly; the inflow direction of the water inlet of the cover is designed into an oblique direction which can be used for washing the hollow trough in a rotary manner; the hollow microfiltration membranes are upper and lower compact layers; the filter precision of runner layer structure membranes of hollow cavities is 0.1-10mu m; filtration holes inside the membranes are of asymmetric structures and form an irregular bent passage; the hollow cavities are formed by radial reinforcing ribs arranged in the cavities and a plurality of small radial cavities formed by the upper and lower compact layers; and the small holes in the mandrel are communicated with the hollow cavities of the hollow microfiltration membranes. The water purifier has high filter precision and long service life, does not have wastewater, is not easy to block and does not produce secondary pollution.

Description

technical field [0001] The invention belongs to purification equipment in the field of water treatment, and in particular relates to a hollow microfiltration membrane water purifier. The hollow microfiltration membrane in the water purifier is especially suitable for the surface with large changes in indicators such as suspended solids, turbidity, and microorganisms. The water is used as drinking water in the drinking water production equipment. Background technique [0002] Due to environmental pollution and water shortage in today's world, the rapid development of water treatment technology is forced. At present, the water purification equipment used in the field of water supply treatment is usually filtered by filter elements or filter rods made of filter materials (filter precision > 20μm), and is equipped with a solenoid valve with a wastewater ratio for continuous concentration. And flushing, because the filter element and filter rod are integrally formed, the fil...

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Problems solved by technology

At present, the water purification equipment used in the field of water supply treatment is usually filtered by filter elements or filter rods made of filter materials (filter precision > 20μm), and is equipped with a solenoid valve with a wastewater ratio for continuous concentration. And flushing, because the filter element and filter rod are integrally formed, the filtration capacity is limited, the output of filtration capacity per unit area is low, and the pollutants intercepted on the surface are easy to block the filter holes, resulting in a short service life of the filter material and cannot be reused; at the same time, the waste water ratio Solenoid valve accessories not only increase the cost, the solenoid valve is prone to failure, and the filtration method is cross-flow filtration, which continuously discharges waste water, resulting in a great waste of water resources

[0003] At the same time, in the field of water supply treatment, there is also a type of liquid filter used in water purification equipment. It is a filter with an overall cavity, and there are several small cavities in the cavity. Since the upper and lower layers are both filter layer, so the filter area is increased and the service life is increased. However, the internal filter holes of the upper and lower filter layers are symmetrical structures, and the pollutants intercepted by the filter membrane are easy to stay in the hollow cavity, polluting the water quality, breeding bacteria, and bringing Secondary pollution

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