A dual-inlet adaptive dynamic water and fertilizer mixing device and method

Abstract

The device provided by the present invention forms two inlets by setting two symmetrical input ports on the side wall of the mixing device housing, and two pressure regulating pipes communicating with the blade adjusting device on the side wall. And by setting clockwise and counterclockwise mixing blades with corresponding operating rods, and setting clockwise and counterclockwise actuators on the adjacent blades that dynamically change with the two inlet pressures, the adjacent blades can automatically adapt to the dynamic changes of flow rate and pressure. , thereby increasing the stability during the mixing process of fertilizer and liquid, the device has strong operability and simple structure, and is suitable for environments with high requirements for fertilizer and water irrigation uniformity. The problem of poor adaptability to changes is that the scope of application is relatively limited; at the same time, the device can adapt to the mixing conditions of water and fertilizer with different flow rates and pressures, and can meet the irrigation needs of various types of crops in different growth periods and different water and fertilizer.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a dual-inlet self-adaptive dynamic water and fertilizer mixing device and method. Background technique [0002] my country is a large agricultural country, and agricultural water consumption accounts for 80% of the total water consumption, and the vast majority of agricultural water consumption is used for crop irrigation. However, the irrigation equipment in our country is far behind that of developed countries. The shortage of water resources has seriously affected the healthy development of local industry and agriculture, and also affected the safety of domestic water in local cities. Water and fertilizer integration technology is a new agricultural technology that integrates irrigation and fertilization. Water and fertilizer are supplied through the controllable pipeline system. After the water and fertilizer are mixed, the drip irrigation is formed through t...

AI Technical Summary

Problems solved by technology

In the process of mixing fertilizer and liquid, active fertilizer injection or venturi or proportional fertilization pump are mostly used for passive fertilizer absorption. Both methods have their own advantages and disadvantages. For most irrigation, according to different growth stages of crops, The demand for different types of fertilizers is to carry out integrated irrigation with water and fertilizers. Therefore, the method commonly used at home and abroad is to supply different types of fertilizers through multiple channels. The fertilizers mainly include N, P fertilizer and potassium fertilizer, which are in large demand and Ca, Mg, etc. The composition of trace elements, in the irrigation of water and fertilizer machine, because in the process of fertilizer injection, multi-channel fertilizers are mostly mixed and mixed, and the fertilizer is injected from the pipeline to the main waterway. Instability of pressure and flow rate

At present, static mixing devices are mostly used for mixing various types of fertilizers. The blades of the mixing device are fixed. During the process of mixing water and fertilizer, there is no feedback for changes in the water pressure and flow rate of the pipeline. The effect of water and fertilizer blending is better when the flow rate is relatively stable, but for the state of poor water pressure and flow rate stability, the effect of water and fertilizer blending is poor. Under the condition of high uniformity of irrigation and fertilization, it cannot meet the requirements and affect crop yield and quality

[0004] At present, related patents related to dynamic mixing devices include: 1. Dynamic mixing device (2015100478889), in which the fluid passes through the gap between the end of the raised structure and the inner wall of the outer sleeve, forming an axially stretched flow field, It is beneficial to improve the mixing efficiency of the melt, but the device is suitable for the fusion of the melt, and the flow rate during the fusion process of water and fertilizer is relatively large. The flow rate of this dynamic mixing device is small, and it is not suitable for the process of water and fertilizer fusion; 2. A double cone Surface dynamic mixing device (201510205055.0), through the cooperation of the east plate and the static plate on Tongzhou, the flow channel of the stroke cone is beneficial to extend the length of the flow channel and has a large shear force on the fluid, but this In the mixed flow process, the ability to quickly and uniformly mix a large number of elements is limited, the processing cost of the biconical surface is high, and the applicability of the device is limited; 3. The dynamic mixing device and its use (2012800107296), the device is used in multiple fluids Although the dynamic mixing of components is suitable for the mixing of multi-channel fertilizers and water channels, the structure of the device is complex, the comprehensive feedback ability of fluid pressure and flow rate is limited, and the cost is high. The production input capacity of farmers in our country is limited. The device increases the burden on agricultural production

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