There are several aspects to improve the cleaning efficiency of high-pressure cleaners, which are mainly reflected in the full utilization of pressure and flow, the efficient conversion of pressure energy to speed energy, the optimized design of nozzles and the maximum impact on the target.
The impact force of the high-pressure water jet When the high-pressure water jet is a stable and continuous flow, the pressure acting on the impacted object is called the impact pressure. The impact force is proportional to the square of the jet velocity, so trying to increase the jet velocity at the nozzle outlet is the key to improving the cleaning efficiency.
The water jet speed minimizes the high pressure hose resistance loss, winding loss, joint loss and nozzle resistance loss. In short, try to reduce the pressure loss from the pump to the nozzle.
Water jet flow rate Water flow rate q refers to the flow rate emitted from the nozzle. In calculation, the flow rate Q of the water pump is often used instead. In fact, q is smaller than Q because usually the nozzle aperture cannot be selected scientifically, and part of the flow overflows and bypasses The pipe overflows back to the tank.
Jet power Jet power represents the total working capacity of the jet, and it is directly proportional to the pressure and flow rate of the jet. It can be seen that increasing the pressure and flow of the jet can increase the power of the jet, and both are proportional to the power of the jet. In fact, the improvement of the two has a big difference in the effect of combating dirt, and they are not all proportional. The pressure is designed for the strength of the dirt, that is, if the pressure is lower than the destructive strength of the dirt, the dirt will not be destroyed. Just like hitting a rock with a mallet, the rock will not be destroyed, because the former is not under pressure. This is only when hit with a hammer, the dirt will be destroyed. When the pressure is sufficient, if you want to greatly improve the effect of destroying dirt, increasing the pressure becomes a secondary condition, and this effect can be obtained mainly by increasing the flow rate of the high-pressure water jet. Therefore, under a certain pressure, the flow rate is an important factor to improve the cleaning effect. If the important role of the flow rate of the cleaning machine is ignored, the cleaning efficiency will be greatly reduced.
The design of the nozzle aperture is basically determined after the pressure and flow rate of the high-pressure plunger pump are determined according to the cleaning requirements. Of course, the nozzle aperture must ensure that the pressure and flow of the cleaning machine are fully utilized, that is, the high-pressure water pump always works under the rated pressure and rated flow conditions. Therefore, the small nozzle aperture has become a key technical issue affecting the efficiency of the cleaning machine.
In short, the weight of the nozzle of the high-pressure cleaner is only 20-30g, the nozzle diameter is only 0.5-2.5mm, and its volume is only half the size of the little finger. However, it plays a decisive role in the cleaning quality, cleaning efficiency, and cleaning economic benefits of 2 to 5t high-pressure cleaners. Users should pay special attention to selection.