After the removal of the three blade roots blower, the blades could not be aligned and there was a motor burning fault. The roots blower manufacturer explained:

Xinqianshun Machinery will introduce Sanye to you Roots blower The reason why the fan blades cannot be aligned after disassembly and the reason why the motor burns

The reason why the blades of the three blade roots blower cannot be aligned after removal:

1. The master and slave impellers are reversed, and the driving impeller and driven impeller are reversed;

2. The rotor shaft is deformed and cannot be installed normally;

3. The bearing is damaged, which leads to the failure of normal installation;

4. The impeller is broken, which leads to the inability to ensure a certain clearance between the impeller and the impeller and the inability to install normally;

5. The impeller cannot be installed normally due to casing deformation;

　　 Reasons for motor burning of three blade roots blower:

1. The motor runs without phase.

This is a killer of three-phase asynchronous motor. When the motor operates normally, the three-phase load is symmetrical load, so the three-phase current is basically balanced and equal. If the motor loses phase during operation, the vibration of the three blade roots blower will become larger, there will be abnormal sound, the speed will drop, the current will increase, and the motor temperature will rise sharply, which will lead to motor burning, An ordinary motor will burn out in ten minutes at most. The most terrible thing is the phase failure of the whole power supply system. In addition, many equipment switches are self-locking or automatically opened. The power transmission phase failure accident after a power failure may burn more than ten motors at a time.

2. The bearing is damaged.

Due to the continuous operation of the three blade roots blower for a long time, the temperature rise of the motor body is too high, and the bearing is not replenished with grease in time, resulting in bearing oil shortage until bearing damage, shaft bending, belt fracture and other phenomena, resulting in the friction between the stator and rotor (commonly known as bore sweeping), resulting in a sharp rise in core temperature, burning of groove insulation, turn to turn insulation, The winding turns are short circuited or "shot" to the ground is caused from the surface. In serious cases, the stator core will be inverted, misaligned, the shaft will be worn, and the end cover will be scrapped.

3. Overload burning will be caused when the air valve is closed.

Since the air valve of the three blade roots blower has not been opened or has not been opened enough after starting. However, when the three blade Roots blower is running under this condition, the operating temperature of the motor body rises sharply until it is burned out. After the tuyere or air valve is reset, but the three blade roots blower is not closed in time, the operation of the blower in this case will also cause the temperature of the motor body to rise sharply until it is burned out.

4. Be affected with damp.

The insulation reduction caused by water ingress or moisture of the distribution cabinet or motor is also a common cause of damage. During use, pay attention to regular insulation. Before the motor explodes, it can be solved by drying and re dipping. Especially for the motor driven by frequency converter, be more careful about this item, otherwise it may be reimbursed together with the frequency converter.

5. Others.

In addition, there are not very common reasons: for example, the voltage is too low or too high, the vibration causes the terminal to be loose and short circuit between phases, pests and rats, and the voltage of imported motors does not match the domestic voltage. Various depressurized starting circuit faults cause no conversion, and the motor works at low voltage for a long time, etc. The accident rate can be reduced by checking all indicators before use and then starting.

Ordering instructions:

1. When ordering, it should be noted that: conveying medium, inlet pressure, inlet temperature, inlet flow, pressure rise, environmental conditions and whether there are special requirements.

2. Standard matching: host, coupling, base (if any), anchor bolt. 3. Optional accessories (as required by the contract): silencer, air filter, pressure relief valve, electric actuator, check valve, elastic joint, silencer elbow, silencer pipe, etc.