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Roots blower has the exhaust characteristics of forced ventilation:

Source: Roots blower manufacturer Published on: March 10, 2022 Hits:
Roots blower It has the nature of forced exhaust. If there is no venting, or the venting valve is only opened a little, it will lead to insufficient air output and too much air intake, and the gas will be compressed in the blower rotor cavity, the pipeline between the blower outlet and the valve. The motor speed is fixed, that is to say, the blower speed is fixed, the exhaust volume is constant, the exhaust gas is continuously compressed in the pipe and the rotor cavity of Roots blower, and the compressed gas is more and more. It is bound to require greater force to be used for the previously compressed gas, so that the fan can maintain the speed unchanged. At this time, it is easy to lead to:
① Motor! The motor voltage is constant, the speed is constant, the demand force is greater, and more work is done. The motor power increases, the current increases, the current is too large, and the protection system stops. The motor without protection system is burned out!
② Fan! The fan is heated by compressed gas, and the heat cannot be discharged in time! Fan heating, softening, forced exhaust function embrittlement fan casing! The fan is subject to two external forces at the same time. 1. The motor pushes the main shaft of the fan, and the air pressure in the inner chamber pushes the fan casing outward. Combined with heat and force, the fan bursts, or even explodes. There are many merchants who want to repair the broken casing.
③ The reason for system pipes and valves is the same as above. There are many damaged valves and burned flanges.

Can the venting valve of Roots blower be opened normally without starting: precautions when starting Roots blower and consequences of not venting when starting Roots blower?

Xinqianshun introduces to you the power supply of the rotten hair dryer and the consequences of being empty

Roots blower structure:

Roots blower is a positive displacement rotary blower, which uses two blade shaped rotors to compress and transport gas in a relative cylinder. The compressor keeps two rotors engaged by the synchronous gear at the rotor shaft end. Each concave part of the rotor forms a working volume with the cylinder wall. When the rotor rotates, it takes gas away from the air inlet. When it moves to the air outlet near the air outlet, it is connected with the air outlet instantaneously.

Safety precautions shall be taken when Roots blower is powered on and started:

Consequences of not venting when starting roots blower:

The vent valve is an ordinary valve, which is available in various styles. Its main function is to dispose and discharge the pressure gas or liquid during non working time or emergency, so as to avoid risks and accidents. So we call it vent valve

When Roots blower starts with no load, the air release valve slowly closes after starting, and the blower reaches the working standard state; When the fan stops, the air release valve slowly opens, and the fan is in no-load state. Then turn off the power and stop! The air release valve is mainly used for protection!

In fact, Roots blower has the characteristic of forced exhaust. If there is no ventilation or the ventilation valve is only opened a little, it will lead to insufficient air output and excessive air intake, and the gas will be compressed in the rotor chamber of the blower, the outlet of the pipe between the blower and the valve. The speed of the motor is constant, that is, the speed of the blower is constant, and the displacement is constant. The exhaust gas is continuously compressed in the pipeline and rotor chamber, which requires more and more compressed gas. This is limited and requires more power to complete.

1. The motor voltage is constant, the speed is constant, the requirements are large, and the workload is large.

2. The fan is heated by compressed gas, and the heat cannot be discharged in time! The fan heats and softens, making the fan shell brittle! The fan is subject to two external forces, and the motor has a strong torque on the main shaft and bearing of the fan.

3. Internally control the outward thrust of the pneumatic fan housing. Combined with heat and power, the fan bursts and even explodes there. The business risk of casing rupture and repair is everywhere.