Control system for viscosity of compound fertilizer slurry

Abstract

The invention discloses a control system for the viscosity of compound fertilizer slurry, comprising a feeding mechanism, a mixing tank, a rotary spray head, a slurry conduit, a control system and a rotary spray head motor. The compound fertilizer slurry in the mixing tank enters the rotary spray head through the slurry conduit, and the rotary spray head motor drives the rotary spray head to granulate. The control system comprises a pressure sensor, a pressure sensor processing device, a signal amplifying device, a rotating speed controller and a feeding ratio controller, wherein the pressure sensor device detects the pressure value of the compound fertilizer slurry, outputs the detected pressure value to the pressure sensor processing device in a mode of detecting current and forms a detecting current signal, and then a control signal is formed through the signal amplifying device and output to the rotating speed controller and the feeding ratio controller so as to control the rotating speed of the rotary spray head motor and the feeding ratio of the compound fertilizer slurry. The control system can control the viscosity of the compound fertilizer slurry so as to ensure that the compound fertilizer has uniform grain size, high utilization rate and uniform nutrient, and is easy to absorb.

Description

technical field [0001] The invention relates to a compound fertilizer production system, and more particularly relates to a control system for controlling the viscosity of compound fertilizer slurry by using a speed controller and a feed ratio controller at the same time. Background technique [0002] my country is a country with a large population, and grain production occupies an important position in the development of agricultural production. Usually the way to increase food production is to expand the area of ​​cultivated land or increase the yield per unit area. According to the national conditions of our country, the potential to continue to expand the cultivated land area is not great. Although there are still many uncultivated lands in our country, most of them have the problems of high investment and great difficulty. This determines that my country's grain production must take the way of increasing the yield per unit area. Fertilization can not only improve soil...

AI Technical Summary

Problems solved by technology

[0004] In the production process of compound fertilizer, the viscosity of the compound fertilizer slurry creates conditions for bonding into balls. If there is no viscosity, the particles cannot be produced. If the viscosity is too high, large balls are easy to form, resulting in the production of compound fertilizer particles. uneven size

In the existing production equipment, regardless of the use of rotary differential nozzle granulator, fixed nozzle granulator, vibrating nozzle granulator or other granulators, the pressure of the compound fertilizer slurry in the mixing tank is constantly changing , so the viscosity of the compound fertilizer slurry is also constantly changing, and because the particle size of the compound fertilizer is related to the viscosity of the compound fertilizer slurry, the particle size of the produced compound fertilizer is uneven

The uneven particle size of the compound fertilizer will cause uneven nutrients in the compound fertilizer, which will easily affect the growth efficiency of crops and reduce the yield of crops

When fertilizing crops, there is still an inconsistent dissolution rate, causing small particles to dissolve too quickly and large particles to be difficult to dissolve, so that crops cannot fully absorb the applied fertilizer, resulting in low fertilizer utilization and waste

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