The fine fogging nozzle adopts multiple strands of oil before internal mixing, and the gas pairs cross each other to increase the impact area of oil and steam. After internal mixing, the fine fogging nozzle of air atomization is hit by two rows of porous pairs to increase the fineness of atomization once again. This is the use of fine fogging nozzle atomizer on the liquid beam of the impact force and friction to overcome the viscous force and surface tension of the liquid flow rate to break atomization.
Fine fogging nozzle selection skills1. There are many kinds of fine fogging nozzles, and the range of choice is larger.
2. Generally speaking, the fine fogging nozzle of degreasing and washing process can choose the spray type fine fogging nozzle with strong impact force: taking the "V" type, that is, the fan type fine fogging nozzle as an example, the spray Angle is better at 60° and has a large impact force.
3. The fine fogging nozzle of the phosphating process can choose a centrifugal fine fogging nozzle with good atomization, fine and uniform water particles and weak impact force: Take the "Z" type fine fogging nozzle as an example, the distance of the fine fogging nozzle from the workpiece is 40cm ~ 50cm, which has a dispersion and the spray effect of liquid atomization. Fine fogging nozzles on the nozzle arrangement, can be parallel and cross two forms, for the passage, the use of vertical cross arrangement, spray effect is better.
4. The factors that choose fine fogging nozzles are flow rate, pressure, spray Angle, coverage, impact force, temperature, material, application, etc., and these factors are often implicated and mutually restricted.
Fine fogging nozzle precautions1, flow and pressure, spray Angle and coverage are proportional. The purpose of any fine fogging nozzle is to maintain continuous contact between the tank and the workpiece, and the flow rate is more important than the pressure.
2, the temperature of the liquid does not affect the spray performance of the fine fogging nozzle, but it affects the viscosity and specific gravity, and also affects the choice of materials. The material of the fine fogging nozzle should also be determined according to the chemical characteristics of the tank, and the non-corrosive tank can be cast in bronze or plastic die casting according to the difficulty of processing.
3, in order to prevent corrosion, non-metallic materials can be used; For sulfuric acid, hydrochloric acid and other strong corrosion tank liquid, nylon plastic can be used; The fine fogging nozzle material for phosphating tank is generally made of acid-resistant stainless steel, and the fine fogging nozzle to prevent rust can also be directly made of stainless steel or nylon.