Microfiltration machine with backwashing device, and microfiltration and precipitation integration machine

Abstract

The invention discloses a microfiltration machine with a backwashing device. The microfiltration machine comprises a filter screen support frame with a filter screen, and the backwashing device, the backwashing device comprises a backwashing water inlet pipe and at least two backwashing water outlet pipes, the water outlet of the backwashing water inlet pipe is communicated with the upper ends ofthe backwashing water outlet pipes, the lower ends of the backwashing water outlet pipes are distributed along the circumference of the filter screen support frame, the filter screen is vertically arranged, and a rotating mechanism capable of automatically rotating the lower ends of the backwashing water outlet pipes around the filter screen support frame is provided between the backwashing wateroutlet pipes and the backwashing water inlet pipe. The microfiltration machine with the backwashing device has the advantages of low control system requirements, good filtering effect, good backwashing effect, and no influences on normal running. The invention also discloses a microfiltration and precipitation integration machine.

Description

technical field [0001] The invention relates to the technical field of filtration equipment, in particular to a microfiltration machine with a backwashing device and a microfiltration and sedimentation integrated machine. Background technique [0002] The microfilter is a screen filter that traps fine suspended matter. Usually, a microporous screen of 80-200 mesh / square inch is fixed on the drum type filter equipment, and the solid particles in the water are intercepted through the screen to achieve solidification. liquid separation. The working principle of the horizontal drum microfiltration machine is: the treated water enters the drum of the horizontal drum microfiltration machine along the axial direction, and flows out through the screen in a radial radial shape, and the fine suspended matter in the water is trapped in the horizontal drum microfiltration machine. The inner surface of the filter screen on the drum of the rotary drum microfiltration machine. When the i...

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Problems solved by technology

Generally, solid-liquid separation equipment has the following problems: 1. In order to obtain a better sedimentation effect, the design of the sedimentation tank requires a small surface load, resulting in a large area of ​​the sedimentation tank; 2. The filter material in the filter tank is easy to block, It needs to be replaced regularly, requires high backwashing intensity and complicated operation; 3. The actual filtration area of ​​the drum microfilter is small, and it is generally designed to realize automatic backwashing through the liquid level in the machine, so the drum microfilter needs to be configured more High-demand control system, and the liquid level controller is easily damaged, resulting in backwash not starting in time and causing the filter to be clogged. In addition, when the water contains more solid pollutants, when the drum is used for a long time, impurities are easy to block in the drum The inside of the filter makes the drum unable to filter the impurities in the water more effectively, resulting in poor filtering effect and frequent backwashing, which affects the normal operation of the equipment

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