Feb 14,2019

Great luck at graduation | 2019 Set off on your journey and achieve new success!

Great luck to start with! | 2019 Set off on your journey and achieve new success!

May 16,2018

Precautions when servicing the circulation fan

Proper maintenance is a crucial guarantee for the safe and reliable operation of a circulating fan, and it also helps extend its service life. Therefore, when using circulating fans for tobacco processing, it is essential to pay adequate attention to them. At the initial stage of impeller operation and during all routine inspections, whenever possible, the impeller should be examined for defects such as cracks, wear, and dust accumulation. Whenever feasible, the impeller must be kept clean and regularly brushed with a wire brush to remove dust and rust deposits. Over time, this accumulated dust may settle unevenly on the impeller, disrupting its balance and causing rotor vibrations. After repairing the impeller, it must be dynamically rebalanced. If conditions permit, a portable balancing device can be used to perform balancing directly on-site. Before conducting dynamic balancing, it is necessary to check that all fastening bolts are properly tightened. "Since the impeller has been operating in an unbalanced condition for some time, these bolts might have become loose." Apart from regular inspections of the internal housing and suction chamber for severe wear and removal of heavy dust deposits, no additional special repairs are required for these components. Regularly verify that all fastening bolts are securely tightened. In fans equipped with compression bolt assemblies, press the butterfly spring on the support until it reaches the installation level indicated in the drawing. During bearing unit maintenance, the supply of lubricating oil to the bearings is often checked. If oil leakage is observed in the housing, slightly tighten the bolts on the end cover. If this does not suffice, it may be necessary to replace the sealing gasket with a new one. Maintenance of other auxiliary equipment, including motors, electric drives, instruments, and measuring devices, is described in detail in their respective operating manuals. These manuals are provided by various manufacturers of auxiliary equipment, and our manufacturer will deliver these manuals to users in random packaging. Repair and maintenance of high-temperature circulating fans when they are out of service: When the fan is not in use and the ambient temperature drops below 5 ℃, any residual water in the equipment and piping should be drained to prevent damage to the equipment and piping due to freezing. Maintenance of tobacco-processing circulating fans operated by smoke drying during prolonged shutdowns and storage: Cover the surfaces of bearings and other critical components with an anti-corrosion oil to prevent corrosion. The rotor of a high-temperature circulating fan used for tobacco processing should be manually rotated by half a turn (that is, by 180°) approximately every two weeks. Before rotating the rotor, the end of the shaft should be marked so that the original top point becomes the bottom point after the rotor is moved.

May 16,2018

Fan Classification

Fans can be classified into several types depending on the material used, such as fans with iron housings (conventional fans), fiberglass fans, plastic fans, aluminum fans, stainless steel fans, and so forth. Fans can be categorized as centrifugal, axial, mixed-flow (diagonal), and radial, depending on the direction of gas flow.

May 16,2018

Method for servicing the dryer oven motor

The motors used in drying ovens also belong to a specific type of motor, so their maintenance process is similar. The maintenance process for drying oven motors includes: cleaning the stator and rotor—replacing carbon brushes or other components—vacuum impregnation with Class F paint under pressure—drying—dynamic balancing calibration...

May 16,2018

How to use a fan to circulate tobacco?

The fan used for tobacco drying typically consists of a motor, a drive shaft, a bearing support base, and a fan blade. The motor’s output shaft is rigidly connected to the upper end of the drive shaft via a coupling. The fan blade is mounted on the lower end of the drive shaft and operates via direct transmission. The motor directly drives the rotation of the drive shaft. As a result, transmission stability is high, and the bearings on the drive shaft are not subject to wear. In addition, diesel engines are provided as an option; these can be used to rotate the fan in the event of a power outage, thereby preventing the inability to dry tobacco leaves normally due to power disruptions.

Apr 27,2018

Don't forget your original intention and keep innovating. Mindun Huada: Provide “heartfelt” components for grain drying towers.

Don't forget your original intention and keep innovating. Mindun Huada: Provide “heartfelt” components for grain drying towers.