Tunnel Construction Local Ventilator
Date of issue:2022/12/5 16:27:54 Number of Views:
Tunnel Construction Local Ventilator:
According to the user's requirements, the local ventilator in tunnel construction can adopt variable frequency soft start, so that the fan can realize stepless speed regulation. A multi-purpose machine is realized, which effectively saves power and investment, and can save more than 30% of electricity compared with the traditional starting method.
The local ventilator for tunnel construction is composed of air collector, casing, motor, impeller, diffuser, air duct joint and other parts. Acoustic material: The motor is sealed in the inner ruler and isolated from the lack of wind in the air duct. The motor adopts a three-phase asynchronous motor with a voltage level of 380V/660V. The fan impeller is made of special materials, which are anti-static and free of frictional sparks. The motor is cooled by the airflow delivered by the motor cooling fan wheel, and the motor is communicated with the fresh air flow.
The ventilator is provided with a foot bracket and a hanging hole, which can be installed on the ground in the roadway or used for hanging. Before assembly, the radial clearance between the impeller and the casing should be strictly checked, and the surrounding clearance should be uniform, which is guaranteed to be between 0.15% and 0.35% of the diameter of the impeller. After assembly, check that the distance between the hub and the end face of the flange shall not be less than 2mm. The rotation direction of the impeller must conform to the direction indicated by the upper direction mark on the casing. The fan must be managed and operated by a special person.
Tunnel Construction Local Ventilator Structural features:
Tunnel Construction Local Ventilator is generally composed of flow collectors, front and rear main air ducts, and diffusers. The primary and secondary impellers are directly connected to the motor shaft, the motors are placed in the air duct, the two-stage impellers are guide vanes for each other, and the two-stage impellers rotate in reverse during work.
Tunnel Construction Local Ventilator:
According to the user's requirements, the local ventilator in tunnel construction can adopt variable frequency soft start, so that the fan can realize stepless speed regulation. A multi-purpose machine is realized, which effectively saves power and investment, and can save more than 30% of electricity compared with the traditional starting method.
The local ventilator for tunnel construction is composed of air collector, casing, motor, impeller, diffuser, air duct joint and other parts. Acoustic material: The motor is sealed in the inner ruler and isolated from the lack of wind in the air duct. The motor adopts a three-phase asynchronous motor with a voltage level of 380V/660V. The fan impeller is made of special materials, which are anti-static and free of frictional sparks. The motor is cooled by the airflow delivered by the motor cooling fan wheel, and the motor is communicated with the fresh air flow.
The ventilator is provided with a foot bracket and a hanging hole, which can be installed on the ground in the roadway or used for hanging. Before assembly, the radial clearance between the impeller and the casing should be strictly checked, and the surrounding clearance should be uniform, which is guaranteed to be between 0.15% and 0.35% of the diameter of the impeller. After assembly, check that the distance between the hub and the end face of the flange shall not be less than 2mm. The rotation direction of the impeller must conform to the direction indicated by the upper direction mark on the casing. The fan must be managed and operated by a special person.
Tunnel Construction Local Ventilator Structural features:
Tunnel Construction Local Ventilator is generally composed of flow collectors, front and rear main air ducts, and diffusers. The primary and secondary impellers are directly connected to the motor shaft, the motors are placed in the air duct, the two-stage impellers are guide vanes for each other, and the two-stage impellers rotate in reverse during work.