The search for efficient and economical solutions for managing irrigation systems has led to continuous innovation in the field of hydraulics, with the development of hydraulic injectors standing out. These devices, essential for modern agriculture, offer a clever solution for managing hydraulic flow without requiring external electrical power.
What are hydraulic injectors?
Hydraulic injectors are components designed to efficiently manage water in irrigation systems, using the existing pressure in the line to control the injected flow. Unlike other systems that depend on pressure to operate, hydraulic injectors rely on a mechanism proportional to the flow, allowing them to operate without generating significant load losses, even in networks with very low pressure (just 0.7 bar).
Advantages of Hydraulic Injectors
- Economy and Accessibility: As they do not require electrical power, they are an ideal solution for remote agricultural installations or those with limited access to energy sources.
- Efficiency at Low Pressure: Capable of operating effectively in low-pressure systems, hydraulic injectors ensure uniform and consistent irrigation.
Disadvantages to Consider
- Pressure Dependence: The main limitation of these systems is their dependence on system pressure; variations in pressure can result in flow fluctuations, affecting irrigation uniformity.
- Flow Losses: Depending on the model and manufacturer, the actual flow can be 2 to 3 times less than the injected flow, posing challenges in dosing precision.
Comparison with Pressure Proportional Injectors
Unlike standard hydraulic injectors, pressure proportional hydraulic injectors offer finer control and are less dependent on pressure fluctuations. These injectors, also ideal for locations without electrical access, utilize advanced mechanisms to maintain more precise and consistent water dosing, making them a superior option for farms looking to optimize resource consumption.
Advanced Alternatives: Dosing Pumps
Dosing pumps, such as the Dostec 40 and Dosmart AC in their 12/24 VDC versions, represent a qualitative leap in precision and efficiency. Operating on batteries or solar energy, these pumps offer:
- Extreme Precision: Capable of adjusting the flow precisely according to the exact needs of the crop.
- Energy Flexibility: They operate with batteries or through solar energy systems, making them ideal for any location, regardless of electrical infrastructure.
Implementation and Benefits
Implementing dosing pumps in an irrigation system involves an initial higher investment, but the long-term benefits in terms of water efficiency and improved crop yields can justify the expense. Additionally, their ability to operate autonomously with renewable energy sources makes them a sustainable solution for modern agriculture.
While flow proportional hydraulic injectors are an economical and accessible solution for areas without electricity, they face significant limitations in terms of precision and efficiency. On the other hand, dosing pumps and pressure proportional injectors offer much more effective and precise alternatives, suitable for farmers seeking to maximize the productivity and sustainability of their operations. The choice between these options will depend on the specific needs of the irrigation system and the availability of resources.
