Gravity type multilayered valve-free filtering water treatment device

Abstract

The invention provides a gravity type multilayered valve-free filtering water treatment device, comprising a filter (16). The device is characterized in that at least two water inlets (3) are arranged on the filter; at least two layers of filtering areas (6) and a clean water chamber (8) are arranged in the filter from bottom to top; clean water filtered by the filtering area (6) on a bottom layer is directly sent to the clean water chamber (8) through a clean water outlet pipe (7); a water outlet (15) is arranged on the clean water chamber (8); the filtering area (6) on an upper layer sends the filtered clean water to a clean water area at the lower part of the filtering area (6) on the bottom layer through corresponding communication pipes (4), and then sends the filtered clean water to the clean water chamber (8) through the clean water outlet pipe (7); a siphon back-flushing pipe (9) is arranged in each layer of filtering area; the lower end of each siphon back-flushing pipe (9) is communicated with a water inlet area of the filtering area (6) in the corresponding layer, and the upper end of each siphon back-flushing pipe (9) extends out from a filter (16) and is communicated with the upper end of a siphon auxiliary pipe (12); and a corresponding siphon damage pipe (10) is mounted on each siphon back-flushing pipe (9). The gravity type multilayer valve-free filtering water treatment device provided by the invention has the advantages of simple structure and small occupied area.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a device for water treatment using a valveless filter, in particular to a gravity type multi-layer valveless filter water treatment device. Background technique [0002] At present, valveless filters are widely used in surface water purification, landscape water purification, river and lake water purification, groundwater iron and manganese removal, industrial circulating water bypass filtration, production wastewater removal of suspended impurities, organic sewage biochemical treatment, secondary precipitation treatment subsequent filtering process. [0003] The existing valveless filters are divided into filtering state and backwashing state, but more than two need to be used in parallel, such as figure 1 shown. It occupies a large area and adopts a traditional single-layer gravel support layer. The filter material is easy to be plated and stratified, so the filter material needs t...

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Problems solved by technology

[0004] The purpose of the present invention is to design a gravity-type multi-layer filter with a small footprint and a good filtering effect in view of the problems that the existing valveless filter has a large floor area, the filter material needs to be replaced regularly, and the sedimentation effect is not obvious. Valve filter water treatment device

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