High-strength saline-alkali soil salt draining filter tube and manufacturing method thereof

Abstract

The invention discloses a high-strength saline-alkali soil salt draining filter tube and a manufacturing method thereof. The salt draining filter tube comprises a chlorinated polyvinyl chloride tube layer at the outer layer and a polyvinyl chloride tube layer at the inner layer, wherein the chlorinated polyvinyl chloride tube layer comprises the following components: chlorinated polyvinyl chloride, polyvinyl chloride resin, organic fibers, calcium carbonate, dibasic lead phosphite, calcium stearate, zinc oxide, thiodipropionic acid and chlorinated paraffin; and the polyvinyl chloride tube layer comprises the following components: rigid polyvinyl chloride, polyvinyl chloride resin, calcium carbonate, zinc stearate, vinyl ester resin and talcum powder. The filter tube is high in strength, isgood in compression resistance, and has excellent flexibility. Water scales are very difficult to form as a result of surface tension of the inner wall of the filter tube, so that salt draining and conveying ability is favorably improved.

Description

technical field [0001] The invention belongs to the technical field of salt discharge treatment of saline-alkali land, and in particular relates to a high-strength salt-removal filter material pipe for saline-alkali land and a preparation method thereof. Background technique [0002] An important part of saline-alkali land management is to regulate the soil salinity. In the vertical aspect, it is to regulate the upward movement and downward movement of soil salt, restrain the upward movement and promote the downward movement. At present, the method of burying hidden pipes in saline-alkali land and using fresh water to irrigate is usually used, so that the salt in the upper layer of the soil will drop with the water level, and the salt water will be discharged by using hidden pipes. [0003] Underground pipes usually use plastic pipes, which have the advantages of good corrosion resistance, light weight, and convenient molding. The disadvantages are low strength and poor comp...

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Problems solved by technology

[0003] Underground pipes usually use plastic pipes, which have the advantages of good corrosion resistance, light weight, and convenient molding. The disadvantages are low strength and poor compression resistance. It is easy to precipitate inorganic salts or form scale deposits on the inner wall of the filter tube. On the one hand, the scale will easily affect the slope ratio of the dark tube and cause poor salt discharge; on the other hand, the scale will easily block the water inlet hole on the tube wall from the inside of the tube. , so that the salty water cannot enter the dark tube smoothly, thus affecting the effect of salt discharge

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