What is Roots Blower and What Should We Pay Attention to in Purchasing
Roots blower is one of the most popular operating ventilation equipment. In recent years, professional blower manufacturers have gradually developed new products such as low noise, double oil tanks, oil displacement, water-cooled Roots blowers and so on, which are put into the market by using conventional air-cooled and single oil tank Roots blowers instead of the original two-leaf Roots blowers. What problems should fans pay attention to in the initial stage of purchasing? Next, let's take a look at them.
First of all, let's know about Roots blower: the structure is simple enough to consist of a chassis, a wallboard and two three-blade impellers. Through the action of a pair of synchronous gears, the two impellers rotate at the same speed in the opposite direction, and rely on the tiny gap between the impeller and the impeller, between the impeller and the casing, so that the suction chamber and the exhaust chamber are basically isolated. By means of the impeller rotation, the gas in the volume of the casing can be propelled to achieve the purpose of blast.
Roots blower adopts frequency conversion control, which can precisely control the air volume. Compared with valve control, it is more intuitive and convenient to adjust the air volume to meet the production needs. Because the frequency conversion technology is adopted, the motor can be soft-started without starting current shock. The original did not use inverter when the motor is directly started, starting current up to 200-300a, both on the motor or the grid It has adverse effects. Now using frequency converter soft start, starting current is not higher than rated current 46A, which reduces the impact of fan outlet pressure on fan instantaneously and prolongs the service life of fan and other equipment. Because fan speed drops to 60%, the vibration frequency of fan pipeline is greatly reduced, the original basic noise of fan is reduced, and the service life of fan, motor and bearing is more prolonged. The mechanical life reduces the maintenance of the equipment.
Matters needing attention in purchasing Roots blower:
1. Reasonable selection of high-quality Roots blower manufacturers, professional and dedicated manufacturers of fan products, the first is the selection of high-quality materials, reasonable structure, skilled skills, quality assurance. (At present, due to the large demand in the market, some manufacturers choose low-cost purchase of bearings, gears, oil seals and other accessories. Because these parts are the vulnerable parts of the fan, and also the main problem to determine the quality of the fan. In order to reduce costs, some wind turbine manufacturers choose cheap products to occupy the market at low prices. Choose low-cost ordinary bearings, tooth surface is not grinded, more exaggerated is that some even oil seal is not used, directly replaced by several rubber rings. Because there is no oil seal, the oil can not exceed the bearing gear, can only be added to one third of the tank, can not play the role of lubrication, cooling, poor selection of materials, plus the short time to produce fans, there is no experienced assembly technicians to produce.
2. When purchasing Roots blower, it must meet the design requirements of the system. Including air volume, pressure, motor power and piping. If the data in this system is not very accurate, it will lead to fan failure problems, such as motor tripping, poor aeration, serious damage to fan components or direct damage to the fan.
It will directly shorten the normal service life of the fan.
3. When purchasing Roots blowers, don't be confused by the low price. Some manufacturers use the low price to seek sales volume, which is beyond imagination. It's not a benefit, but a risk. In actual use, failure is constant, and the production and life will be more troublesome. Quality is the guarantee.
