What should be paid attention to during the operation of high-pressure roots blower:
1. The temperature in Roots blower room must be below 40 ℃. If it exceeds 40 ℃, the life of the fan and motor will be greatly shortened.
2. The outlet pipe must be equipped with a vent valve.
3. The installation direction of the check valve must be correct, and the check valve can be opened and closed normally.
4. Before starting Roots blower, it must be confirmed that the inlet and outlet pipes are unblocked, the outlet valves and vent valves are all open, and the lubricating oil is located in the center of the oil window.
5. When turning the machine by hand, it should rotate flexibly more than 360 degrees, and confirm that there is no foreign matter in the machine body.
6. After starting the motor, gradually close the valve. At the same time, pay attention to the pressure gauge, and confirm that the pressure of the pressure gauge should not exceed the rated pressure on the nameplate, and the motor current should not be higher than the rated current.
7. The rotation direction of Roots blower is determined. When looking at the main shaft of the blower, the rotation direction of the blower is counterclockwise (for special manufacturing products, the rotation arrow shall prevail).
8. When Roots blower stops running, it is not allowed to shut down suddenly with load. Gradually open the vent valve to reduce pressure, and confirm that when the pressure is lower than 0.015Mpa, it can shut down and power off.
Warning!!! It is strictly prohibited to operate the fan against rules. When the fan stops running, the water-cooled fan must be cold
However, the water shall be discharged to avoid freezing crack of oil tank and water pipeline, and the violator shall be responsible for it. The following figure is High pressure Roots blower Picture of
The most important thing in the brand ranking list of high voltage Roots blower is its model selection: the wrong model may cause serious losses. The Roots blower involves many technical parameters, such as type, medium, flow, pressure, speed, motor form, motor power, insulation level, motor protection level, cooling mode, noise, power supply, etc.
The main technical parameters of high-pressure Roots blower in model selection are as follows:
1. Pressure parameters
As long as fans are involved, pressure parameters will be involved. Roots fans are different from other types of fans. The pressure parameters of Roots fans are to overcome the resistance of the pipeline, which is often referred to as the back pressure in the industry. This pressure parameter is the main parameter in the selection, and accurate pressure parameters can be provided as far as possible during the selection
2. Flow parameters
The flow is the air volume, usually in cubic meters per minute or cubic meters per hour. The flow parameter of Roots blower refers to the volume of gas transported per unit time under standard conditions. The calculation formula is as follows:
Q (inlet)=Q (outlet) × density of outlet gas (kg/m3)/density of inlet gas (kg/m3)
Convert the flow Q (standard, m3/h, normal temperature and pressure) in the standard state into the intake flow Q (inlet, m3/min), which can be calculated according to the following formula:
Q (inlet) ＝ Q (standard) × P (absolute pressure of inlet gas, Pa)/(P (absolute pressure of inlet gas, Pa) - S (relative humidity) × P (saturation pressure of water vapor
, Pa) × T (thermodynamic temperature of inlet gas K)/273
Note: Standard state: 0 ℃, 0.1MPa dry state
3. Power parameters
Roots blowers produced by each brand are different, so the power of each Roots blower is also different. In Roots blower industry, power refers to shaft power. The higher the shaft power, the higher the efficiency. The lower the shaft power, the greater the loss and consumption. When selecting Roots blower, if there are certain requirements for shaft power, they should be marked in the purchase technical agreement.
Motor power is a parameter that is often mentioned by everyone. Roots blower equipment will match the motor with the corresponding power. If there is no complete parameter in the selection, the motor power can be provided to minimize the selection range.
4. Media parameters
Roots blower can only transport clean air, and the transmission medium is mainly air. With the continuous innovation and upgrading of technology, roots blower can also transport gas, biogas and other gases, but it needs special treatment. It should be noted that the conveying medium here refers to the gas substances passing through the roots blower, which can also be used in the dust removal industry, but the dust will not pass through the roots blower. The roots blower in the dust removal industry provides only the gas source power for the dust.
When selecting the type of Roots blower, if the gas medium conveyed contains water gas, oil gas, toxic gas, etc., it needs to be noted, and special treatment must be carried out for special gas transmission before the Roots blower can be used.
5. Density parameter
The density parameter is rarely mentioned in the selection of Roots blower, but another parameter related to density is often heard: altitude, high altitude area, low gas density, low altitude area, high gas density. When selecting Roots blower, if we are in plateau area or basin area, the density parameter will play a role in the selection, The specific model parameters must be determined according to the gas density. According to our understanding of Roots blower industry, technicians from Xinqianshun told us that 18.5kw three leaf Roots blower
Detailed parameter table (figure and text) When multiple purchasers purchase Roots blower, they only know
One or two parameters, or even one parameter, are not available, so only rough selection can be carried out. In order to meet the working conditions, the model is often too large, which will not only increase the purchase cost, but also cause waste of energy. Therefore, if you do not know much about the selection parameters, please read this article carefully.
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