What are the classifications of air spray gun

Summary: Air spray gun is a common spraying tool, simple structure, easy to operate, easy to change the color, and although there are many types of its structure, but their structure is largely the same, generally have the atomization part, the adjustment part and the gun body of the three parts. Air spray gun on the market, can be divided into siphon, gravity, pressure type according to the way of feeding these three types, can also be categorized according to the use and flow. The next step is to take a look with the editor. What is the structure of the air spray gun

Spray gun is essential to the painting process in the key equipment, air spray gun, although there are many types of air spray gun, but their structure is generally the same, generally have the atomization part, regulating part and the gun body of the three parts. Atomization part generally includes air cap, mixing needle, nozzle, the role of the paint atomization, continuous operation, the formation of uniform continuous film. Adjustment part generally includes amplitude adjustment, air volume adjustment, paint adjustment of these parts, the role is to adjust the shape of the atomization, adjust the compressed air and discharge rate. The gun body includes various parts such as mounting seals and triggers, and serves to completely separate the air and material channels.

What are the classifications of air spray gun

One, according to the material supply method

1, siphon

Siphon spray gun is widely used air spray gun. The lower part of the gun with a paint cup, compressed air in the gun nozzle flow at high speed, around the local vacuum, the paint cup paint into the nozzle and atomized into paint droplets.

The capacity of the paint cup is usually 600mL-1000mL, which is selected according to the number of spraying volume, and the spray gun can be sprayed by connecting the compressed air. The nozzle should not be vertically upward or downward, so as to avoid the paint leaking out from the ventilation holes of the paint cup.

2, gravity type

Gravity type spray gun is a small workpiece and the use of filler paint, it is attached to the upper part of the paint cup, relying on the weight of the paint down to the gun. According to the position of the paint cup relative to the axis of the gun, it is divided into central and side type. The center type restricts the tilting position of the gun during spraying. Side-by-side type can be used in different positions while the paint cup remains vertical. The paint cup of gravity type spray gun is generally small in capacity, 400-600mL.

Gravity type spray gun is easy to change the color, cleaning, less material consumption, suitable for frequent color change of color spraying process and spraying of two-component paints with fast curing speed.

3, pressure type

Pressure type spray gun is through the pressure of the paint delivery to the gun. The gun itself does not come with a paint cup, the gun is lightweight and can be sprayed at any position and angle. It is suitable for intermittent or continuous spraying of workpieces or for use in the coating line, which improves the spraying efficiency and the quality of the coating film.

Two, according to the use and flow rate

1, repair gun: flow rate of 150-350mL/min

2, the standard production gun: flow rate of 150-600mL/min

3, high load production gun: flow rate of 250-1000mL/min

4, the special purpose of the air Airbrush

(1) Airbrush: small size, suitable for advertising, painting and other occasions.

(2) special effects gun: can produce random strange graphics such as spray point gun, messy silk gun, etc., suitable for furniture, bicycles and other industries.

(3) two-component spray gun (commonly known as double-port spray gun): two paint components in the gun outside the mouth of the mix, for unsaturated polyester and other two-component paint.

(4) Stone-like paint spray gun: suitable for building decoration spraying stone-like paint.

5, high flow low pressure spray gun (HVLP)

High flow low pressure spray gun is by the material supply system and specially designed HVLP spray gun composed of several parts. HVLP spray gun atomization of paint is not the power of compressed air pressure but the flow, so the pressure of the paint atomization is less than 0.07Mpa. in the HVLP system, generally use pressure paint bucket or double diaphragm pump pressure feed. diaphragm pump pressure type supply. As the HVLP system on the air supply source requirements and the traditional air spray gun is different, the air supply source method is commonly used to have an electric turbocharger to provide a large flow of ultra-low-pressure airflow. Another common compressed air decompression use.