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Comparison of Agriculture Knapsack Sprayers

Air-assisted electric knapsack sprayer reduces pesticide losses to the soil

An air-assisted electric knapsack-type sprayer uses an air-shear spraying mechanism to disperse droplets of insecticide or herbicide onto the plant canopy. The spray liquid is introduced into a high-volume airstream through nozzles located near a fan. Sprayers in other countries operate under 150 psi, whereas in the U.S. they use much higher spray pressures, producing fine droplets that penetrate the plant canopy.


The design of an air-assisted electric knapsack-style sprayer reduced the loss of pesticides to the soil by reducing the pressure of the nozzle and improving droplet penetrability. Furthermore, it reduced the loss of pesticides to the soil by as much as 37% to 75%. While conventional knapsack sprayers can also produce better spray quality, they have many drawbacks.


Faster than manual backpack sprayer

If you're working with chemicals, you might wonder if a backpack sprayer is faster than a manual one. Manual backpack sprayers typically have a small tank (10-20 liters) and are extremely lightweight, but the pump itself requires a considerable amount of energy to pressurize. You may find that your hands begin to fatigue when using a manual backpack sprayer, but the added power and features make them well worth the expense.


Another advantage of this device is its portability. Compared to a manual backpack sprayer, this backpack sprayer is small and portable and has less wear and tear on the parts than a manual model. It can spray as far as 33 feet horizontally and 23 feet vertically, so it's perfect for tall trees. You can easily adjust the nozzle to spray at various distances and angles, depending on what you're working on.


Has multiple nozzles

There are many ways to calibrate Knapsack electric sprayers with multiple nozzles. Calibration refers to the process of determining the amount of spray to be applied uniformly over the entire area. Calibration of a sprayer is important both when the machine is new and when the nozzles are replaced. It is important to do this periodically, as the flow rate of new nozzles increases rapidly. To calibrate a sprayer, measure the amount of pesticide applied on a portion of the field and then calculate the amount of pesticide to apply to the entire area. The nozzles must be calibrated to the same amount or a uniform spray pattern will result.


To calibrate a sprayer, set the pressure to a value approximately double the desired spraying rate. The pressure relief valve should be set to approximately 10 to 15 PSI above the desired spraying pressure. If this value is too high, the sprayer should be adjusted to reduce the pressure. A nozzle flow calibrator is a simple tool that will allow you to measure the discharge rate at a specific pressure.


Has adjustable tips

Some knapsack electric sprayers come with adjustable tips. The tips are numbered to indicate the angle of spray patterns and how much spray the sprayer will produce at a certain pressure. For example, a tip with a 1502 rating is the most narrowly spaced. The other nozzles with a higher rating cover a wider area. Both nozzles are useful for different types of applications.


Has screen

A Has screen for Knapsack electric sprayers is an essential accessory for any farm or landscaping project. A good strainer will keep your sprayer's line clean by flushing out excess material before it reaches the spray tank. Moreover, it will reduce the amount of physical effort necessary to pump the sprayer. It will also improve consistency and accuracy of the spraying application. However, it is important to remember that not all strainers are created equal.