In order to ensure that the discharge machine operates in a stable working condition area, the single machine must ensure the minimum flow rate (currently about 25000 mh), so it is often used to recirculate, and if necessary, the inlet valve throttling or the rear discharge valve should be used to relieve pressure. The following problems have been caused: 1) When two roasters are in stable operation, neither of the two discharge machines can be operated at full load, and the working efficiency is low; 2) At present, when the two roasters are in normal operation, the discharge machine always keeps a small amount of recirculation. When the roaster is not operating normally, the return flow is larger, causing a large amount of electric energy to be wasted; 3) 2 sets of high-speed (5493 rpm) fans are operated in parallel, often due to untimely adjustment, causing 1 flow shortage to surge, or due to import and export The high pressure causes a bad phenomenon such as braking, which causes the rotor to be balanced and destroyed, causing abnormal wear of the components, and the equipment is forced to stop, which increases the maintenance cost of the equipment.
In order to reduce power consumption, reduce gas emissions, ensure stable operation of large equipment, and extend its operating cycle, the use of high-voltage variable frequency speed control technology is the best solution. High-voltage frequency conversion technology, frequency conversion speed control principle The discharge machine adopts high-voltage frequency conversion technology, that is, the post-row pressure is used as the information source to adjust the motor speed, and the fan speed is changed by changing the motor speed to realize the change of the fan flow. The flow regulation with the frequency converter as the adjustment center makes the fan speed adjustment possible, and finally achieves the purpose of energy saving. The control scheme is as follows: the amount of gas used in the roaster is reduced (increased) → the pressure is increased (decrease) after the discharge → the inverter → the motor speed is decreased (increased) → the flow rate of the discharge machine is decreased (increased) → the pressure before the discharge is increased ( Reduce) → blast position reduces (improves) air volume → furnace reduces (improves) load. It not only realizes the automatic adjustment of the gas volume of the roaster and the output gas volume of the discharge machine, but also improves the accuracy and timeliness of the flow regulation, and also reduces the labor intensity of the operator.
This Wireless Bluetooth earbuds designed for business man, black color matching and simple appearance design, ultra-light weight makes easy to carry, deeply loved and sought after by business people.
The inner side is smoothly processed, and marked with [R" and [ L " labels in obvious positions to help identify. The line control is near the right earphone. the control area from left to right is previous song, power-on/ Play/pause/hang up the call, next song. The button is made of ABS. It needs to be long press for a long time when it is turned on or off.At the same time, the blue indicator light will always flash once when it is turned on. Three pairs of earplugs, large-medium-small, are included. The actual wearing comfort is not bad, and the physical noise reduction effect is not bad,It comes with a type-C data cable.
After turning on the Bluetooth headphones, the mobile phone can quickly search for Bluetooth. After the first match is successful, it can be connected to the mobile phone quickly next time it is turned on.
As a TWS earbuds, the sound quality is naturally one of the important criteria for judging its excellence. However, different people like different kinds of music, so they have different preferences for sound quality. For example, some people like the deep bass, some people prefer the shock of the high pitch, etc., so this piece is more subjective.
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