Design and forming method of flow channel of cast-type thin-wall drip irrigation belt

Abstract

The invention discloses a method for designing and forming a flow channel of a tapered thin-walled drip irrigation belt, including the construction of a double-layer asymmetric flow channel structure, the determination of the control threshold and the optimal value of the structural parameters, and the establishment of a double-layer asymmetric structure water inlet. Design of the water outlet, a forming wheel processing method matching the double-layer asymmetric structure and an optimization method for the forming process of the cast drip irrigation belt, material modification and reasonable formula design of the cast drip irrigation belt; The stereotyped production process of the drip irrigation belt. Through the method of the present invention, the problems of long product development cycle, high cost and poor adaptability caused by the lack of design theory are effectively solved; the problem of unstable water in and out caused by the large deformation of the drip irrigation belt and the blockage of the flow channel is solved, and at the same time it reduces It reduces the production difficulty; effectively improves the machining accuracy, realizes fast and precise production; makes the pipe wall thinner to 0.125mm, and greatly reduces the cost.

Description

technical field [0001] The invention belongs to the technical field of agricultural water-saving irrigation, and in particular relates to a method for designing and forming a flow channel of a cast-type thin-wall drip irrigation belt for emitter products. Background technique [0002] Drip irrigation is one of the most water-saving and efficient irrigation technologies at present. It has broad application prospects and has become an important way to achieve water-saving and efficient production in modern agriculture. However, the proportion of drip irrigation in the world is not high. The main reason is that the cost of drip irrigation system is high, which is a great challenge for agriculture with low output efficiency. [0003] The emitter is the largest part of the drip irrigation system, most of which need to be replaced every year, and the cost of use remains high. In the prior art, efforts have been made in many ways to develop new emitter products, which greatly redu...

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Problems solved by technology

More importantly, due to the limitation of the material formula, it was found in the test process of the current cast drip irrigation belt that due to the large deformation of the drip irrigation belt material, the flow channel is even flattened when the pressure is high, resulting in slowing down of the outflow. , the flow rate increases with the pressure before 0.11MPa, and the flow rate decreases after 0.11MPa, and even does not flow at 0.16MPa, and does not reflect the compensation function and self-cleaning function

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