Rotating-disc type ultrasonic self-cleaning microstrainer

Abstract

The invention discloses a rotating-disc type ultrasonic self-cleaning microstrainer and relates to the field of wastewater processing. The rotating-disc type ultrasonic self-cleaning microstrainer comprises a casing body, a main filtration system and a cleaning system, wherein the main filtration system is arranged in the casing body, and comprises filter disc bodies. The rotating-disc type ultrasonic self-cleaning microstrainer is characterized in that: the cleaning system comprises an anti-sucking assembly and a mud discharging assembly; ultrasonic cleaning assemblies are provided between an upper portion of the mud discharging pipe and the filter disc body; a control system is provided for determining blocking degree of the filter disc body according to a liquid level of filtering water area, and for automatic controlling operating times of the ultrasonic cleaning assemblies, the anti-sucking assembly and the mud discharging assembly. With employing the ultrasonic cleaning assemblies, times of carrying out anti-sucking is substantially reduced, the whole equipment wearing is decreased, energy consumption is reduced. According to the present invention, all filter disc bodies are cleaned simultaneously at one time, such that a cleaning program is simplified. The rotating-disc type ultrasonic self-cleaning microstrainer provided by the present invention can be widely applicable for situations of surface water purifying and advanced wastewater treatment.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a rotary disc type ultrasonic self-cleaning microfilter. Background technique [0002] Fiber turntable filtration is a kind of deep filtration technology, which can be widely used in surface water purification and advanced sewage treatment, especially suitable for the discharge transformation of urban sewage treatment plants and the deep treatment of sewage reuse. The fiber turntable filter system is composed of parallel filter discs installed vertically on the central cylinder for supporting the filter cloth in series. The number of filter discs in a set of devices is generally 2 to 20, and each filter disc consists of 6 small pieces. The fan-shaped filter is combined, and each fan-shaped filter is covered with fiber wool filter cloth. Although the currently used fiber disc filter has a wide range of uses, it still has the following deficiencies: [0003] 1. Since the filtering ca...

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Problems solved by technology

[0003]1. Since the filter capacity of the filter cloth decreases rapidly during the filtration, it is necessary to start the reverse suction pump more frequently, thus reducing the working efficiency and accelerating the wear of the equipment

[0004]2. The filter cloth cleaning adopts partition cleaning, the cleaning cycle is long, the efficiency is low, the control system is complicated, the pipeline installation is difficult, the filter cloth wears a lot, the service life is short, and Energy consumption is also large

[0005] 3. Since each filter disc body is composed of several fan-shaped filter discs, without reinforcement measures, the filter discs are independent of each other, the flatness of the entire filter disc body is poor, it is not easy to adjust, and the filter cloth is easy to wrinkle

[0006]4. Adding hexagonal connectors on the periphery of the circular central cylinder is difficult to manufacture and high in manufacturing cost. The connection between the disc and the disc is easy to be misplaced, the suction cup is easy to deform at the misplaced place, and the filter cloth is also easy to wear out at the misplaced place, and the cleaning effect is poor

[0007]5. The suction cup is in direct contact with the filter cloth, the filter cloth is easy to wear, the service life of the filter cloth is short, and the cleaning effect is poor

[0008]6. The water level of the outlet tank is adjusted with a valve. When the water volume is large, it is easy to form a vortex, which affects the filtering effect

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