The method of adjusting the voltage is based on the fan flow and the heat (ie temperature) required to dry the printing ink at the high printing speed of zui. We can find the heating power of the zui at the voltage of 380V and the resistance of the heating tube at this time.
The thyristor voltage regulation means that the AC voltage becomes DC after full-wave rectification, and after the thyristor inverter circuit, it becomes an AC power whose voltage can be controlled and regulated, just like the inverter voltage regulation and frequency modulation. With a controllable, adjustable size AC power source, applying this power supply to the heating tube changes the heating power, ie the heating temperature, to change the outlet air temperature.
The voltage regulation control method (ie, the control system) can realize the voltage change of 0V to 380V, and the heating power can be realized from 0kW to the large heating power of the Zui, so that the temperature can be continuously adjusted continuously.
Compared with the current heating control, the contactor heating is only a stepwise increase or decrease of the heating power. The temperature fluctuation of the adjustment is large, the inertia is large, and it must be observed and operated by the operator, and the response is not timely. Sometimes the temperature is too high and too low, and the operability is poor. Usually, the proper working point is difficult to find, and the stability of the temperature cannot be guaranteed.
The thyristor pressure regulating temperature heating box can realize the continuous voltage regulation like the inverter, and realize the continuous adjustment of the heating power. In this way, we only need to adjust the voltage during the test (the power and temperature are stable), the air outlet temperature is constant, and the constant output of the temperature can be realized without a large change in temperature. There is almost no need to operate the worker's operation, and the degree of automation and operability are improved. If the requirements are higher, the temperature data setting and fully automatic adjustment can be realized. Only the temperature feedback and PID circuit need to be added.
Calculating the power required for heating The following printing data can be used to calculate the power required for heating: 1. The water content of the ink in each printing plate m = kg (s × d) = volume m3, set to 70 ~ 80.
2. The paper feed speed of the printing machine is m/s=V (zui high speed), set to 9600mm/s.
3. The number of printing units n is set to 12 color group 4. The width of the plate (w) × length (l) = area (s), set the number of plates in the paper of 480 × 610 = 294020mm25.1m, set to 1.64.
6. Ink layer thickness (calculated according to the Zui thick ink layer 6 μm) Since the volume of water is set to 70 to 80%, the average value is 75%.
The ink volume per plate s × d = 294020 × 6 / 1000 = 1764.12mm3 The volume of water per plate is 75% × 1764.12 = 1323.09mm3 The mass of water 1000kg / m3 × 1323.09 / 1000 × 1000 × 1000 = 1.323009g (1000kg / M3 is the density of water. If the ink is dried, the water must be heated to above 100 °C. If the room temperature is °C, the temperature rise of water is at least 80 °C. Calculated by 90 °C, the heat required for heating and drying of single-plate ink is: m × Ï Ã— Δt = 1.32309 × 4.18 × 90 = 501J. The specific heat capacity is 4.18kJ/kg °C. The paper feed in 1 second is: 12×9.6×1.64×501=94652W, the number of units is 12; the speed is 9.6; the number of layouts is 1.64; the heat is 501; the heat exchange efficiency of the heating box is assumed to be 60-80%, we calculate 70%, 70 % is heat exchange efficiency, then heating power is required: 9465.2kW/70%=36kW.
Pain Relief Patch for Breast
[Name] Medical Cold Patch
[Package Dimension] 10 round pieces
The pain relief patch is composed of three layers, namely, backing lining, middle gel and protective film. It is free from pharmacological, immunological or metabolic ingredients.
[Scope of Application] For cold physiotherapy, closed soft tissue only.
[Indications]
The patches give fast acting pain relief for breast hyperplasia, breast fibroids, mastitis, breast agglomera tion, swollen pain.
[How To Use a Patch]
Please follow the Schematic Diagram. One piece, one time.
The curing effect of each piece can last for 6-8 hours.
[Attention]
Do not apply the patch on the problematic skin, such as wounds, eczema, dermatitis,or in the eyes. People allergic to herbs and the pregnant are advised not to use the medication. If swelling or irritation occurs, please stop using and if any of these effects persist or worsen.notify your doctor or pharmacist promptly. Children using the patch must be supervised by adults.
[Storage Conditions]
Store below 30c in a dry place away from heat and direct sunlight.
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