We can analyze from the structure, material, function and cleaning effect of the nozzle of the high pressure cleaning machine how to choose the industrial high pressure cleaning nozzle
 
 
The high pressure cleaning nozzle, as the actuator in the high pressure cleaning machine, is the last channel of the fluid, which plays a key part in the final acceleration and deceleration, controlling the degree of atomization, exit speed and spray range, and its performance will directly affect the cleaning effect. At present, most of the nozzles equipped with general high pressure cleaners on the market do not consider the cleaning effect, but simply as a jet channel, which can not better play the cleaning efficiency of high pressure cleaners
 

First, commonly used high pressure cleaning nozzle structure

 
According to the shape of the high pressure nozzle, there are also many differences. The nozzle structure commonly used on high pressure cleaning machines is cylindrical (linear, 0 degree nozzle) and flat fan.

 

1. Cylindrical shape

 
The most commonly used continuous jet nozzles are solid flow nozzles developed on the basis of conical convergence. Because the jet emitted by the solid flow nozzle locally concentrates the striking force and the target distance, both the ability and the jet can be gathered, and the striking force can be obtained, and its shape is also the most conducive to the manufacture of high-precision products.
 
Cylindrical nozzles are mainly used for cleaning small surfaces, deep holes or grooves. The water sprayed out of the cylindrical nozzle is linear, and the pressure is relatively concentrated. When matching, its aperture, material and thread interface are completely in accordance with the company's equipment configuration list.
 
 

2. Fan nozzle

 
The jet emitted by the fan-shaped nozzle is not only flat but also very uniform, its jet density is good, and the Angle of diffusion can also be changed at will, and its flexibility is high. In addition, the cleaning area of the fan nozzle is also much larger than that of the cylindrical nozzle, which is very suitable for application in the concrete wool operation. Its main disadvantage is that due to the extreme diffusion of high pressure water jet, the energy and impact pressure loss of the jet are very serious, so high pressure is often required in actual operation.
 
 
 

Second, the importance of choosing the right nozzle:

 
Choosing the right nozzle can reduce energy consumption, improve work efficiency and other advantages, such as:
 
1, nozzle often blocked is bound to affect the work efficiency, so the choice of a reasonable structure of the nozzle is the first condition.
 
2. The water flow from the nozzle can effectively transform the pressure into a cleaning effect.
 
3, the nozzle not only has a small resistance to the water flow and can ensure the continuous and stable flow of water, but also a necessary condition for the selected nozzle.
 
4. The nozzle that can save water resources and does not affect the jet effect is the most qualified condition.
 
 
 

Three, the main factors to evaluate the nozzle

 
1, pressure and flow
 
The pressure and flow of the nozzle is a reflection of the performance of the whole machine, and the aperture of the nozzle is directly related, the pressure and flow are mutual influence and change, and the flow value under different pressures is not the same.
 
2, spray Angle and coverage
 
The nozzle coverage is generally calculated according to the injection Angle and distance from the nozzle mouth, but in the actual injection, the effective injection Angle varies according to the distance, and the factors affecting the injection Angle are flow rate, pressure and liquid viscosity. For flat fan nozzles, due to the different Angle of injection (commonly used flat nozzle injection Angle is between 10°-65°), the theoretical coverage range is different at a certain distance from the nozzle, which is the main factor determining the cleaning area. Because the Angle of the cylindrical (linear) nozzle is 0, the impact cross section is theoretically a point, and the spray coverage range is theoretically unchanged. The different nozzle angles of flat sector nozzles correspond to the spray coverage ranges of different spray distances
 
3. Impact Force
 
Impact force is the impact force of the jet fluid on the target surface, and the performance index to measure the impact force of the nozzle is the force per square centimeter. Basically, the value depends on the shape distribution of the jet fluid, the Angle, and the distance from the target surface
 
 
 

Four, nozzle material selection

 
Nozzle materials can be selected metal or plastic, the general metal materials are copper, ordinary stainless steel, hardened stainless steel, stainless iron (need to do salt bath anti-rust treatment), plastic materials are POM, PA6, PA66, etc., but also the use of ceramic. Material selection depends on the following:
 
a) Pressure range;
 
b) Pressure drop requirements after machine durability;
 
c) Cleaning effect requirements.
 
The nozzle is not only an important part of the high pressure cleaning machine, but also the terminal to complete the role of the high pressure water jet - it not only performs the specific work of crushing, cutting and cleaning, but also its existence at the same time affects the play of other components. Not only that, the structural shape of the nozzle also affects the performance of the high pressure cleaning machine, it is necessary to select the right type of nozzle according to the operation scenario, determine the shape of the nozzle, injection Angle, aperture and other parameters in order to achieve effective cleaning.