Anticorrosive combined filter for drip irrigation

Abstract

The invention provides an anticorrosive combined filter for drip irrigation. The filter is formed by connecting a conical centrifugal separator provided with water inlet and outlet pipes with a sand collection tank. The combined filter is characterized in that a net type filter is arranged at a water outlet in the upper part of the conical centrifugal separator and connected with the conical centrifugal separator through a large-opening flange, the water inlet pipe is arranged on the side surface of the conical centrifugal separator, the net type filter is coaxially mounted with the water outlet of the conical centrifugal separator and then connected with the large-opening flange at the upper part of the conical centrifugal separator, and an anticorrosive coating is sprayed before the conical centrifugal separator, the sand collection tank and the net type filter are assembled. The anticorrosive combined filter for drip irrigation uses a flange assembling connection mode by the pointcut that the combined filter is convenient to use and mount and low in operation cost, the surface of the filter is subjected to anticorrosion treatment, then assembling is performed, and the problem that anticorrosion treatment cannot be performed on the inner surface of the filter after welding is solved.

Description

technical field [0001] The invention relates to an anti-corrosion combined filter for drip irrigation, which belongs to the technical field of agricultural centrifugal filters. Background technique [0002] In the existing drip irrigation system for agricultural irrigation, in order to prevent the drip irrigation pipe or the emitter on the drip irrigation belt from being blocked, the irrigation water must be filtered. Generally, the filtration is divided into two stages. The first stage is centrifugal filtration to filter out larger sand particles in the water. Two-stage mesh filter to filter out impurities such as finer sediment. The filter is fixedly installed in the field, there is water inside for a long time, the outside is exposed to the sun and rain, and the rust damage makes the life of the filter generally only 2 to 3 years, and the rust enters the drip irrigation system with water, which is also the main reason for the blockage and damage of the drip irrigation sys...

AI Technical Summary

Problems solved by technology

The filter is fixedly installed in the field, there is water inside for a long time, the outside is exposed to the sun and rain, and the rust damage makes the life of the filter generally only 2 to 3 years, and the rust enters the drip irrigation system with water, which is also the main reason for the blockage and damage of the drip irrigation system

The centrifugal filter chamber of the existing typical centrifugal filter is a sealed tank body welded by steel plates. After welding and forming, it is impossible to carry out anti-corrosion treatment on the inner surface of the centrifugal filter. If the surface anti-corrosion treatment is performed first and then welded and formed, the anti-corrosion coating will be welded local high temperature damage, can not achieve the purpose of anti-corrosion

[0003] In addition, since the mesh filter needs to be opened regularly to take out the filter screen or filter sheet for cleaning, an additional set of openable mesh filter must be installed in the existing irrigation system to clean the filter screen or filter sheet

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