The role of the nozzle problems is initially minor, therefore it is often overlooked. With the change of the nozzle exit, the change of spray characteristics will be gradually obvious and can be monitored. Changyuan Technology Industry Co., Ltd., one of the biggest manufacturers of spray nozzle in China, will introduce the methods to detect spray nozzle failure in the following article for you. |
Particle size: The spray nozzle will produce larger spray particles with the nozzle wear or corrosion, flow increases, and the pressure drops. This problem usually cannot be conceived, but the results can be analyzed by the application results.
Nozzle alignment: When a nozzle is installed with multiple flat fan pattern spray nozzles, you need a complete uniform coverage, requiring all nozzles to be accurately located, that is all of the fan-shaped spray patterns are accurately aligned to ensure accurate coverage area. All spray should be parallel to each other, and have a 5 ¡ã - 10 ¡ãangle with the spout. Otherwise the entire coverage will be uneven.
Flow: When the centrifugal pump is used, the nozzle flow usually increases under pressure with the constant wear and tear of nozzle exit. Because this increase in flow is not easy to be conceived, it is recommended that flow detection being regularly carried out. Flow detection can read by flow rate detector, or at a given pressure, collect the amount of water at a certain period of time to measure. Compare these readings and the readings on the sample, or compare with the new, never used nozzle readings. When using reciprocating pump, the flow of water doesn't change with nozzle exit wear, but the pressure in liquid pipeline drops.
Flat Fan Spray Nozzle
Spray shape: the uneven spray pattern change of fan nozzle is very easy to be found when the nozzle exit is damaged, blocked or bonded. However, when the nozzle exit is gradually worn, spray shape change is not easy to be conceived, which can be found until the flow increases significantly. For applications requiring very uniform spray coverage, it requires the use of special equipment or test to check the uniformity of the spray pattern. The fan-shaped spray nozzle with oval nozzle exit is thick fan shape or blade shape tapered edges, and thus adjacent nozzles overlap distribution is satisfactory. With the wear of nozzle exit, it can be found that the angle included by spray shape is decreasing. Then you can find more water is flowing in the center, so that the water distribution increases. You can also find that it is strip, hollow in the spray shape.
The hollow cone nozzle is basically a liquid ring, its uneven spray pattern is mainly manifested that certain areas are strip shaped. Solid cone, square or oval spray nozzles, the unevenness of their spray pattern is the same as fan nozzle in some degree, and more water is concentrated in the center. The spray shape change caused by internal vane of solid nozzle clogging is not regular.
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