The selection of model parameters of Roots blower in metallurgical industry is the same as the selection of ordinary Roots blower and other fans. Some parameters need to be known to determine the fan type. Roots blower, as a pneumatic conveying equipment, is widely used in chemical industry, metallurgy, environmental protection and other industries. Only the parameters and models calculated accurately can be used. If the model is too large, it will waste power and funds, and cannot achieve the effect of energy conservation and environmental protection. If the model is too small, it cannot meet the requirements of working conditions and working environment. To solve the above problems in the future, Xinqianshun Roots blower manufacturer will discuss with you what parameters we must master when selecting Roots blower.
① Air volume parameters
The air volume parameter of roots blower refers to the amount of gas transported by roots blower in unit time. The general unit of measurement is m/min or m/h, and there are other units of measurement. Roots blower in metallurgical industry is widely used in metallurgical industry. In some industries, it is only auxiliary equipment, and it is impossible to estimate the required air volume parameters, such as cement conveying, boiler return, etc. Under these conditions, it may only provide transportation capacity per unit time, such as 15 tons/hour of cement; The material conveying data can also help us estimate the air volume, which is one of the parameters that must be mastered when selecting Roots blower. Recommended reading: How to obtain the specifications of Roots blower!
② Pressure parameters
The pressure parameter refers to the outlet pressure of roots blower and the pressure to be overcome by roots blower. Xinqianshun Roots blower has repeatedly stressed that Roots blower itself does not produce pressure, and its ability to overcome the pressure of the front pipeline is called "Roots blower pressure". Roots blower is a positive displacement blower whose pressure depends on the front pipe and atmospheric pressure, also known as "back pressure". The pressure on the pressure gauge will show how much pressure is ahead. If the pressure exceeds the rated pressure, the roots blower will be in an overpressure state, and the motor may be burned at any time.
The above two parameters are necessary for the selection of Roots blower. To select Roots blower accurately, we must know these two parameters. The following parameters are also important. What are the parameters? Roots blower in stainless steel industry has the characteristics of anti-corrosion, simple structure, long service life, safe and reliable operation, etc,
③ Speed parameters
Roots blower mainly has two transmission modes, one is belt transmission, the other is direct transmission. Some industries have strict requirements on the speed of roots blowers, and constant speed roots blowers are necessary, so we can only customize them according to demand. So, what effect does the speed of stainless steel roots blower have on the fan?
The speed of the fan has two effects, one is the air volume of the fan, and the other is the service life of the fan. When other parameters are determined, the higher the speed, the greater the conveying capacity of the fan; Secondly, the higher the fan speed, the more serious the self abrasion will be. So for the same fan, all other parameters are the same, except for the different speeds, so the service life of the fan with high speed will be shorter than that of the fan with low speed. From the above, we can see the importance of speed parameters.
④ Media parameters
Not all gases can be transported by Roots blower, such as gases with high acidity and alkalinity, flammable and explosive gases. For example, strong corrosive gas, even though we can customize the roots blower with special materials, the strong corrosive gas will cause very high damage to the roots blower, and it is difficult to adapt to this working environment. Most of the cast iron roots blowers and stainless steel roots blowers on the market have their own use standards. Therefore, even if the model can be selected according to the air volume and pressure, there are certain requirements for the transmission medium.
⑤ Sealing parameters
As mentioned above, Roots blower usually transports clean air as well as gas such as gas and marsh gas. When selecting a fan, we also need to consider one parameter: tightness. Generally, roots blower is sealed by ring+piston ring. However, when transporting special gas, various mechanical seals may be required. Different sealing methods will cause price fluctuations of fan models, which is also one of the necessary parameters for selecting fans.
The above are all parameters that must be prepared when selecting Roots blower. In fact, there are many other parameters. You may ask why there are no relevant parameters of the motor, such as motor power, voltage, explosion-proof grade, etc. If the above five parameters can be determined when selecting Roots blower, the matching motor power can be determined, which will also affect the selection of motor. If we have special requirements for motor brand and explosion-proof grade., Also tell the manufacturer, because this will also affect the blower.
Other influencing factors: there are many parameters that affect the air volume and pressure, such as environment, humidity, climate, altitude, air density, etc., For example, the altitude of 100 meters and 3000 meters will have a certain impact on the selection of pressure. These will affect the effective air supply volume of roots blower from the side. When selecting fans, if there are local climate and environment data, these parameters can be provided to the manufacturer as auxiliary materials for fan selection.
