Sand and gravel screen integrated back cleaning filter device

Abstract

The invention discloses a sand screen integrated reverse cleaning and filtering device. The sand screen integrated reverse cleaning and filtering device comprises a tank body, wherein the outer side of the tank body is provided with a controller; the tank body is internally separated into a sand filtering chamber, a screen filtering chamber and a water collecting chamber which are mutually independent by a cross baffle and a vertical baffle, wherein the vertical baffle is separated into the sand filtering chamber with large volume and the screen filtering chamber with small volume; the water collecting chamber is arranged on the bottom parts of the sand filtering chamber and the screen filtering chamber and is used for communicating the sand filtering chamber and the screen filtering chamber. According to thedevice, three operation modes can be realized by controlling different valves to start and stop; the transition process is simple; the sand screen integrated reverse cleaning and filtering device is used according to different water quality situations, and is relatively wide in application range.

Description

technical field [0001] The invention belongs to the technical field of liquid filtering devices, and in particular relates to an integrated backwashing and filtering device with sand and gravel screens. Background technique [0002] Sand filter and screen filter are widely used in water-saving irrigation projects. The sand filter adopts a unique three-dimensional filtration method, which has strong sewage interception ability, convenient cleaning, and good organic filter effect. However, the cleaning of the sand filter It must be carried out under the condition of multi-tank combination, and it cannot be cleaned under the condition of a single tank. The filter element of the screen filter is usually a nylon filter element or a stainless steel filter element, which has a poor filtering effect on organic matter, and the filter element is easily damaged when the clogging is serious. Sand filter and screen filter are usually used in combination to filter complex water sources, ...

AI Technical Summary

Problems solved by technology

[0002] Sand filter and screen filter are widely used in water-saving irrigation projects. The sand filter adopts a unique three-dimensional filtration method, which has strong sewage interception ability, convenient cleaning, and good organic filter effect. However, the cleaning of the sand filter It must be carried out under the condition of multi-tank combined use, and it cannot be cleaned under the condition of a single tank

The filter element of the screen filter is usually a nylon filter element or a stainless steel filter element, which has poor filtering effect on organic matter and is easy to damage the filter element when the clogging is serious

Sand filter and screen filter are usually used in combination to filter complex water sources, but the disadvantage is that it occupies a large area, the screen filter cannot be cleaned automatically and the filtering effect is unstable, and the management and maintenance labor consumes a lot

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