After the roots blower is installed, it is necessary to add parts when connecting the front pipe, that is, the check valve, also known as the check valve. The check valve is a very simple part, but it is a vital part. If the roots blower does not have a check valve, it will have a great risk of damage in the later use.
The check valve of roots blower needs to cooperate with other parts in order to play a good role, especially when the gas is countercurrent, the check valve of roots blower is in a semi closed state, at this time, other parts of roots blower, such as pressure relief valve, vent valve, etc., can play a good cooperative role in this long-term countercurrent situation.
Working principle of the wafer check valve: when the fluid flows in the direction indicated by the arrow of the valve, under the pressure of the fluid itself, the valve plate compresses the spring, the valve plate opens, and the fluid flows through the gap of the valve plate. When the pressure of the fluid inlet end is less than the pressure of the fluid outlet end, the spring compresses the valve plate to close, and the fluid cannot return to backflow, thus achieving the check function.
During the use of roots blower, we can't guarantee that the pipeline is unblocked all the time. If the pipeline is blocked due to some reasons and the resistance is increased, it is likely to cause overpressure of roots blower. If the overpressure is too large, it will produce reverse flow of gas. At this time, the check valve can well ensure the safety of roots blower. When the gas flows backward, the check valve is closed to prevent the gas from flowing back. At this time, the Roots blower will have an increase in voltage and current due to overpressure overload. At this time, the pressure relief valve will begin to release pressure, and the pressure will be maintained at the boundary point of relative balance.
In case of overpressure, Roots blower will have a series of symptoms. At this time, the air volume will be insufficient and the blower will not work. In view of these conditions, we should find and deal with them in time to avoid more serious accidents.
In the daily production of Roots blower, it is often found that some emergencies, such as sudden power failure and tripping due to excessive rated current, will cause the backflow of high-pressure gas pipeline, which will lead to the instantaneous reversal of the rotor of Roots blower and damage the rotor, which is likely to cause explosion and ignition of the casing, which will bring great harm to safe and stable production.
During the normal operation of the machine, the air flow at the outlet of Roots blower is used to flush the free hanging check valve plate to make the pipeline unblocked. When roots blower breaks down or stops working due to power failure, the valve will be automatically closed due to gas reverse flow or the weight of check valve plate to block the reverse flow of high-pressure gas at roots blower outlet. Thus, the roots blower and other equipment will not be damaged, the rotor will be damaged, causing fire, accidents or gas poisoning, causing personal injury, etc.
I believe that after reading the above, you should also understand the function of the check valve of Roots blower, and I hope it will be helpful to you.
Text term label: Roots blower
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