Evaporation Vacuum Coating Machine including all kinds of the models , for example:
Vertical single door type, Vertical double door type, Horizontal double door type, Square advertising board evaporation coating machine, Silicone oil protective film evaporation coating machine , Rainbow color evaporation coating machine, Inner coating evaporation coating machine, Laboratory/small size evaporation coating machine, etc.
1) It can be widely used to do the decorative coating and function coating on the surface of plastic, ceramic, glass , resin, candle and metal material .
2) high efficiency, full automatic, integrating the vacuum technology, evaporation coating and electromechanical integration technology together. Its an ideal equipment to do the high-grade decorative coating .
3) It can be widely used in Crafts, gifts, hardware appliances, accessories and electronics, machinery, light industry and other industries.
Vacuum Evaporation Metallizer,Vacuum Evaporation System,Vacuum Metallizer Shenzhen Heng Yi Jia Technology Co., Ltd. , https://www.spraycoatingline.com
1. Is the measurement of liquid flow.
2. Measured the main characteristics of the liquid, such as chemical corrosion, viscosity and specific gravity.
System back pressure.
4 suitable suction height.
5. Other options required, such as analog control, pulse control, flow monitoring and timer.
Second, what are the main advantages of electromagnetic driven metering pump?
Electromagnetically driven metering pumps have only one moving part - the armature shaft. Generally, the less moving parts, the more reliable the metering pump works. Metering pump is ideal for low-flow, low-pressure workplaces, and good compensation in the supply voltage fluctuations.
What are the advantages of metering pumps with fixed stroke length and varying frequency compared to metering pumps with fixed frequency and varying stroke length? With this correction, the dosing amount per stroke is known. The total dosage can therefore be calculated (dosing = dosing per stroke * frequency). The total dosage is linear with frequency (50% frequency = 50% dosing). Through external pulse or analog control, dosage can be transferred from minimum to maximum in one second. In addition, it is much less costly than motor-driven stroke length adjustment.
Third, how to use the performance curve of metering pump?
1. Find the performance curve corresponding to the selected metering pump.
2. Indicate the current back pressure in the chart below.
3. Determine the correction factor, taking the backpressure value in bar, up to the curve, and read the correction factor vertically left at the intersection.
4. Divide the required dosage value by the correction factor to give the value in ml / min. Or L / h.
Put the calculation result in the middle of the dosage scale.
6. When placing this value on the dosing scale, use a ruler to find the stroke length setting and stroke frequency setting.
The advantages of metering pumps and their selection parameters
First, the selection of metering pump parameters: