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Pressure selection of high pressure pipeline dredging cleaning machine-

Time: August 20, 2019 15:23 source: unknown author: admin

As a high-pressure water jet equipment, the matching of pressure and flow is very important to make the best use of the equipment, Guangyuan, Zhengzhou The dredge cleaning machine for sewer pipe cleaning is generally used for pipeline dredging and cleaning with a diameter of 50mm-600mm. The optional pressure is 150bar, 200bar, 240bar, etc. the flow requirements are 50L / min, 135L / min, 170L / min, etc. the distance that can be cleaned and dredged is generally 1 m for the main pipe and 400-500 m for the branch pipe.
How to choose appropriate parameters to make high pressure water jet equipment play a great role?
First of all, the size of the nozzle and the number of nozzles in the reverse cleaning machine are determined by the size of the nozzle and the size of the pipe. If the number and aperture of forward cleaning nozzles and reverse propelling cleaning nozzles are used, the pressure calculation formula is as follows: F = 2PA * 102, where p is the driving pressure, MPa is the sectional area of nozzle outlet cm2。 Motor power has 15kw, 22KW, 55kW, 75kW, 90kw.
Secondly, even under the same outlet pressure and flow rate, the pressure distribution will be quite different due to the influence of nozzle structure and performance. The inner hole of high pressure nozzle with cone-shaped hole is transiting from conical to cylindrical. The optimal range of conical surface is 12-14 ° and the ratio of length to diameter of cylindrical hole is 2.5-3.0. The inner surface of the hole is required to be smooth and the roughness is limited to 0.8-0.4. Only by meeting this requirement can the high-pressure cleaning machine achieve higher cleaning efficiency. Therefore, nozzles with different diameters should be selected for pipes with different diameters, generally including 25mm, 40mm, 50mm, 60mm, etc.
Third, the speed of propulsion also affects the effect of pipeline dredging and cleaning. The propulsion speed depends on the diameter of the reverse nozzle, the driving pressure and the friction resistance of the inner wall of the pipe. The formula is as follows: q = 2.1 μ D2 √ ̄ P, where D is the nozzle diameter mm, P is the pressure, MPa and Q is the flow rate L / min.
The principle and configuration of seemingly simple equipment need scientific design and strict calculation to play a good effect, not simple imitation can achieve the actual effect of customer satisfaction, so in the purchase Pipeline high pressure cleaning machine (click to learn video) In order to avoid wasting unnecessary time and money, it is recommended to see the professional, experienced and qualified manufacturers to make decisions.