What inspection steps are required for roots blower before use and installation? Xinqianshun Roots blower manufacturer explains:
one Roots blower Check the tightness of narrow V-belt and the deviation of belt pulley. The deviation of Roots blower belt pulley can be adjusted with a ruler. After the Roots blower has been used for a period of time, the belt will become loose. At this time, readjustment is required. 2. Check that roots blower is filled with gear oil. When leaving the factory, the oil tank has been filled with gear oil. Please check and fill the gear oil. When Roots blower is stopped, add it to the center of the oil window. Do not add more, or oil leakage will result.
3. Before installation, remove the welding slag and other foreign matters in the pipeline, and place the valve in the fully open state, otherwise the roots blower will be overloaded and damaged.
4. Roots blower foundation design shall comply with the relevant provisions of the national mechanical equipment installation project. Roots blower foundation shall be built on hard soil, which should be 100-250 mm higher than the ground and 800-1500 mm deep. The bearing surface of the foundation shall be 100-250 mm wider than the base, and its foundation shall not be firmly connected with other buildings and wall foundations.
5. Enough space shall be reserved around the high-pressure roots blower to meet the needs of maintenance and disassembly.
6. For Roots blower, in terms of turbine compressor, the research on three-dimensional flow impeller has developed from quasi three-dimensional flow impeller to full three-dimensional flow impeller. Moreover, the three-dimensional air flow analysis method has also been developed into the design of the static elements of the blade diffuser in order to achieve the highest unit efficiency. The three-dimensional flow impeller will also be more and more used in the centrifugal three blade roots blower. It is also an important part of high efficiency of high pressure roots blower to expand the adjustment range of roots blower and improve the efficiency of high pressure roots blower under variable load adjustment.
Wind direction control method of roots blower:
Roots blower is supported by rotors of two bearings, and then uses a pair of synchronous gears to keep the relative positions of the two rotors unchanged, playing the role of wind direction control, so it is used in many industries.
The blower is the wind generated by the rotor. The three blade Roots blower has low noise. The wind output from two ports plays a transportation role. Therefore, the rotor usually needs maintenance, because the rotor plays a major role in controlling the direction. To control the wind direction, it is necessary to control the rotor. Only by controlling the rotor in place can the wind direction be controlled naturally. If the wind direction control needs to be adjusted, it can be controlled by adjusting the rotor.
Inspection steps before operation of Roots blower:
1. Check the standby machine equipment of Roots blower system and prepare for full startup. Check the main power switch of the valve of the standby Roots blower to ensure that the outlet valve of the Roots blower is fully closed and the safety passage valve is fully opened.
2. The standby fan of Roots blower starts and the fan stops. When the standby fan is in normal operation, slowly close the outlet of the machine and equipment and disconnect the circuit of the standby fan. The secondary coil pipeline valve of the auxiliary fan is gradually closed, so the outlet working pressure is slightly higher than the working pressure of the fan to be stopped.
3. Gradually open the secondary pipe valve of the fan, and gradually close the outlet valve of the applied fan to make the outlet working pressure slightly higher than the original outlet working pressure. During the whole process, the working pressure of the fan working pressure outlet shall be kept balanced to ensure the reliability coefficient of the system working pressure. Gradually close the secondary valve and outlet valve of roots blower until they are fully closed, and open the secondary valve and outlet valve of standby roots blower until they are fully opened. At this time, the operation process of machinery and equipment stops, and the transformation operation process of Roots blower is completed.
Possible problems in the operation of Roots blower:
1. Very noisy.
If the Roots blower has been used for a long time, the overall compactness will be reduced after a long time, the anchor bolts will be loose, the muffler will be aging, and the gap deviation between the parts will increase, leading to the increase of the noise of Roots blower.
2. The working pressure decreases.
The key reason for reducing the working pressure of Roots blower is that the clearance between centrifugal impellers, between centrifugal impellers, between centrifugal impellers and plate walls, and between centrifugal impellers and shells increases. Roots blower is a mechanical equipment for forced steam transmission. The working pressure displayed by Roots blower is the friction resistance in front of it, commonly known as condensing type. The expansion of the gap will cause serious steam backflow, resulting in the reduction of air pressure and working pressure.
3. The air displacement is small.
There are many reasons for small exhaust air volume and large clearance of Roots blower. If the gap increases, the internal leakage is serious, and the exhaust air volume will be reduced. Similarly, in the whole process of transporting steam, if the pipeline leaks, it will also reduce the exhaust volume.
Small exhaust air volume may also be caused by pipe blockage, which is generally high pressure and high temperature distribution. In order to avoid pipe blockage, it is necessary to maintain Roots blower regularly.
