Metal swing arm spray guns are the core spraying terminals in modern agricultural irrigation systems. Compared to plastic swing arm spray guns, metal materials have significant advantages in high pressure resistance, wear resistance, and service life. Its function can be understood from the following aspects:
First, its core function is to evenly spray water onto farmland.
This is the most basic function. The rocker arm spray gun drives the nozzle to rotate periodically through the reciprocating swing of the internal rocker arm, spraying the pressurized water flow in a fan-shaped or circular atomization manner. The effective spraying radius of a single spray gun is usually between 10 and 20 meters, covering an area of 300 to 1200 square meters. A large sprinkler can be installed with dozens or even hundreds of guns simultaneously, achieving efficient irrigation of large areas of farmland.
2. Water saving - precise control of water consumption
The atomization effect of the rocker arm spray gun is much better than that of the water pipe direct injection.
. The water flow is dispersed into small water droplets and evenly falls on the leaves and roots of crops, reducing the waste of water resources caused by surface runoff and deep seepage. Compared to traditional flood irrigation, using a swing arm spray gun for irrigation can save 30% to 50% water. At the same time, the flow rate and spraying angle of the spray gun can be adjusted according to the crop's water demand, achieving on-demand water supply and avoiding excessive irrigation.III. Improve irrigation uniformity
Farmland terrain is often not completely flat, with high and low undulations.
. The rocker arm structure of a swing arm spray gun has a certain degree of adaptability - when the spray gun is installed on a tilted vertical pipe, the swing amplitude of the rocker arm will automatically adjust to compensate for uneven spraying caused by tilt. Due to its stronger structure, the metal rocker arm spray gun swings more stably under high-pressure conditions, and the spray uniformity coefficient can usually reach over 85%, far superior to fixed nozzles.Fourth, adapt to high water pressure and high flow conditions
This is the key advantage that distinguishes metal rocker arm spray guns from plastic spray guns.
. On large translational sprinkler irrigation machines and center pivot sprinkler irrigation machines, the spray gun needs to withstand working pressures of 2 to 8 atmospheres or even higher, and plastic spray guns are prone to deformation and cracking under such conditions. The metal rocker arm spray gun is made of copper alloy or stainless steel material, which can operate stably under high pressure and high flow conditions for a long time without deformation or leakage. It is particularly suitable for use in northern field irrigation and large-scale farms.Fifth, Spraying Fertilization and Application - Integrated Water, Fertilizer and Application
The swing arm spray gun can not only spray water, but also be used in conjunction with fertilization and application systems.
. Transport liquid fertilizers or pesticides through the main pipeline to the spray gun, and use the atomization effect of the spray gun to evenly spray the fertilizer or medicine on the crops, achieving "water fertilizer integration" or "water pesticide integration" operation. Metal spray guns will not corrode when in contact with acidic fertilizers or pesticides, which is an advantage that plastic spray guns cannot match, greatly extending the service life of the spray gun in fertilization and pesticide application scenarios.6. Frost prevention and regulation of microclimate in the field
In fruit tree planting areas, when encountering frost weather in winter or early spring, a swing arm spray gun can be used to spray fine water mist onto the fruit trees.
. During the process of condensation into ice, water releases latent heat to protect flower buds and young fruits from frostbite. Due to its good low-temperature resistance, metal spray guns can still work normally in environments close to zero degrees without becoming brittle or cracking like plastic spray guns. In addition, spray can also reduce the canopy temperature and alleviate the heat stress of crops in summer.7. Dust removal and improvement of crop photosynthesis
In arid and windy areas, crop leaves are prone to accumulate dust, which affects the efficiency of photosynthesis.
. The swing arm spray gun can regularly rinse the leaves, keep them clean, improve photosynthetic efficiency, and indirectly promote crop growth and yield increase. Metal spray guns will not be damaged during high-pressure flushing and can withstand significant instantaneous flow shocks.8. Additional advantages of metal materials compared to plastic
Table
Comparison dimensionMetal rocker arm spray gunPlastic rocker arm spray gun
Water pressure resistanceCan withstand more than 8 atmospheresGenerally not exceeding 4 atmospheres
Wear resistanceCopper alloy nozzles have a long service life and are not easily worn or deformedPlastic nozzles wear quickly and have obvious flow drift
Corrosion resistanceCopper alloy and stainless steel are resistant to acid and alkali corrosionLong term exposure to fertilizers and pesticides is prone to aging
Low temperature resistance Normal operation below zero temperaturebecomes brittle and prone to breakage at low temperatures
Service lifeUsually 3 to 8 yearsUsually 1 to 3 years
PriceHigherLower
Summary
The role of metal rocker arm spray guns in farmland can be summarized in one sentence: it is a large-scale spray gun. The execution terminal of standardized and precise irrigation has multiple functions such as fertilization, pesticide application, frost prevention, and dust cleaning. The metal material ensures its long-term reliable operation under harsh agricultural conditions such as high pressure, high corrosion, and low temperature. For farms with large planting areas, high irrigation frequency, and the need for integrated water and fertilizer operations, metal swing arm spray guns are the most cost-effective choice.