What is the difference between belt drive and direct drive?

 It is believed that many customers have considered two different transmission modes of belt drive and direct drive when choosing screw blowers. Normally, belt drives are suitable for use when the speed ratio needs to be adjusted or there is a certain distance between the drive shafts, while direct drives connect the drive shaft directly to the driven shaft without additional gearing. Let's analyze the difference between these two transmission modes. First, belt driven screw blower Belt driven screw blower is a common blower transmission mode, through the belt drive shaft and the driven shaft are connected together to transfer power and speed. Belt driven screw blowers are usually composed of the following components: Drive shaft: Usually driven by a motor, powered by rotation. Belt: The belt is a transmission element that connects the drive shaft and the driven shaft, with one end fixed on the drive shaft and the other end fixed on the driven shaft. The material can be elastic materials such as rubber or polyurethane, with a certain tensile strength and wear resistance. Driven shaft: The driven shaft is connected to the rotor of the blower and transmits power and speed through the belt. When the motor starts, the drive shaft begins to rotate, driving the belt to rotate together. The rotation of the belt transmits power and speed to the driven shaft. The driven shaft is connected to the rotor of the blower and rotates at the same speed to generate air flow.

Compared with traditional belt driven screw blowers, Krupp oil-free screw blowers use a unique automatic belt tensioning system. Users do not need to adjust the tightness of the belt frequently, and the belt drive is more efficient, easier to use, and the fan runs more smoothly. Jiangsu Weigu screw blower belt drive system is composed of belt, belt pulley and tensioning device. The belt adopts special surface material, the wear resistance and transmission efficiency of the belt table are higher, which can ensure that the fan can continue to maintain good stability in the case of high speed, high load and long time operation. The pulley is made of cast iron and is precision machined to ensure that the belt is firmly embedded in the belt groove during operation for efficient power transfer. The automatic tensioning device meets the requirements of continuous operation conditions, and does not require the user to adjust the belt tensioning degree. 

While maintaining the stability and efficiency of the belt drive, it can also reduce the noise and vibration during the transmission process to ensure the efficient work of the blower. Second, directly connected drive screw blower The direct drive screw blower produces air flow by rotating the screw. The function of the screw is to compress the gas at the intake port and discharge it through the outlet port. This design eliminates the belt drive and gearbox in the traditional fan, directly connects the motor with the screw, has a compact structure, occupies less space, and is used for high-power units. 

Like belt driven screw blowers, direct drive screw blowers are also widely used in many industries, such as chemical, petroleum, pharmaceutical, food processing, electronic manufacturing, etc. Mainly used in gas transportation, ventilation, spraying equipment, dust collection, compressed air supply and other fields.