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Understand the relationship between current and pressure of roots blower

Source: Roots blower manufacturer Published on: December 11, 2021 Hits:
Roots blower, also known as rotary compressor, uses two blade rotors to move relatively in the cylinder to compress and transmit gas. Before the roots blower is officially put into operation, a trial period is required to ensure normal operation.
The pressure of roots blower is related to the current. At the same speed and voltage, the greater the power of roots blower, the greater the pressure generated, and the power=voltage X current, that is, at the same speed and voltage, the greater the current, the greater the power
The rotating speed of three-phase motor is fixed, and the motor load will increase after holding the voltage, which is easy to overcurrent and burn the motor. Roots blower is a positive displacement fan, and the air volume delivered is proportional to the number of revolutions. Two impellers suck and exhaust three times every time the type impeller rotates. Compared with the two blade type, the gas pulse is less, the load change is less, the mechanical strength is high, the noise is low, and the vibration is small. Two type impellers are set on the two parallel shafts. There is always a small gap between the wheel and the inner hole surface of the oval case and between the impellers. Because the impellers rotate at a constant speed in opposite directions, a certain amount of gas surrounded by the case and the impellers is transported from the suction side to the discharge side.

     

Relation between current and pressure of roots blower

The pressure and current of roots blower are closely related, so customers should ensure the stability of current and voltage of roots blower to ensure its normal operation.

Those who have some knowledge of the performance of the three blade roots blower will know that in fact, the speed of the roots blower will not interfere with the wind pressure of the roots blower, that is, the roots blower can maintain the pressure and speed change of the equipment regardless of the air volume.

The rotation speed of Roots blower is proportional to the air volume, that is, the higher the air volume, the higher the rotation speed of the blower. The pressure characteristics of Roots blower mainly include the following aspects: within a certain pressure range, system changes will affect the pressure. The pressure of equipment is adaptive and changes with the change of system resistance. When the pressure changes, the change is small, because Roots blower has the function of forced ventilation and air extraction. According to the above characteristics, we can change the fan pressure in the following ways. Pressure is required to replace the system. Bottom line: change the size of the air outlet. More money, less motivation. Install a pressure relief valve on the equipment.
I believe that after reading the above, you should also understand the relationship between the current and pressure of Roots blower. I hope it will be helpful to you.
Text term label: Roots blower
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