A valve-adjustable proportional fertilization pump

Abstract

The invention relates to a valve-adjustable proportional fertilization pump, which includes an inlet threaded pipe and an outlet threaded pipe, a three-way valve is installed between the inlet threaded pipe and the outlet threaded pipe, and a driving chamber, a fertilizer mixing chamber, and a fertilizer suction chamber. Cavity and fertilizer suction pipe; the operation process is that the water entering the valve-adjustable proportional fertilization pump enters the driving chamber through the inlet pipe in the chamber, and as the pressure in the driving chamber increases, it will push the driving piston and the fertilizer suction pipe fixed with it. The piston moves down and squeezes the fertilizer liquid in the fertilizer suction chamber into the fertilizer mixing chamber, thereby driving the reversing structure to move for fertilizer discharge and fertilizer mixing. The device of the invention is a valve-adjustable proportional fertilization pump with simple structure, low cost, small water head loss and high fertilization precision.

Description

technical field [0001] The invention relates to a water and fertilizer integrated fertilization device in the field of agricultural equipment, and belongs to the technical field of a valve-regulated proportional fertilization pump. Background technique [0002] Water and fertilizer integration technology has attracted widespread attention due to its advantages of efficient utilization of water and fertilizer and precise fertilization, and has been widely promoted and applied in my country. As an indispensable part of the water and fertilizer integrated system, the fertilization equipment is usually installed at the head of the irrigation system. Its main function is to fully mix the irrigation water and the fertilizer liquid in a certain proportion and then inject the mixed liquid into the irrigation pipe network. At present, among the commonly used fertilization equipment in China, the hydraulic proportional injection pump, also known as the proportional fertilization pump,...

AI Technical Summary

Problems solved by technology

However, due to too many parts and high manufacturing requirements, the proportional fertilization pump is expensive and cannot be popularized on a large scale.

Domestic utility model patent CN201220109480.1 discloses a hydraulically driven proportional pump, which can rely on pressure water to suck fertilizer (drug) liquid into the water in the pipeline, which can ensure the accuracy of fertilization, but the structure is complicated and the manufacturing accuracy is high.

Domestic invention patent CN201510771913.8 discloses a hydraulically driven fixed-ratio fertilization pump. The reversing mechanism is not affected by the spring, and the reversing impact is small, but it needs to be connected in parallel in the pipeline when it is used, and the loss is relatively large.

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