In daily life and many fields, spray plays an important role. From spraying pesticides and fertilizers on crops in agriculture, to spraying make-up water on beauty and skin care, to disinfection in the public health field, spray are everywhere. In the process of science popularization of spray knowledge, in-depth understanding of the working principle of spray will undoubtedly enable us to have a new understanding of this common tool.
The working principle of the spray seems simple, but it actually contains ingenious physical knowledge. Taking the common pneumatic spray as an example, it is mainly composed of liquid storage bottle, spray bar, nozzle and air pumping device. When we inflate the liquid storage bottle through the inflation device, the air inside the bottle is compressed and the pressure gradually increases. As the air pressure continues to increase, when it exceeds the sum of external atmospheric pressure and resistance such as liquid surface tension, the liquid inside the bottle will be squeezed out from the nozzle by the strong air pressure.
After the liquid is extruded from the nozzle, it will pass through a special structure that can disperse the liquid into small droplets. Generally speaking, there are small channels or pores inside the nozzle. When the liquid passes through these narrow areas, due to the sudden increase in flow velocity, according to the principles of fluid mechanics, the pressure on the surface of the liquid will decrease, making it easier for the liquid to break into tiny particles. At the same time, the airflow outside the nozzle will also generate shear force on the extruded liquid, further promoting the dispersion of the liquid into mist.
Different types of spray have different working principles. The electric spray relies on the motor to drive the pump body to work, extract the liquid from the liquid storage bottle and pressurize it, and then spray the droplets through the nozzle.
Jiabao spray is constantly exploring and innovating in spray related fields, and is committed to providing better products for the public. Homecare spray produces blow molding bottles of various specifications. These blow molding bottles have the advantages of light weight, corrosion resistance, good sealing, etc., and can well meet the needs of spray for storing liquid. Moreover, Jiabao spray can also be designed and manufactured according to customers' requirements. Whether it is a blow molding bottle with special shape or a spray with special functions, it can provide customers with customized solutions.