What is the purpose of this valve in a dry screw vacuum pump?
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What is the purpose of this valve in a dry screw vacuum pump? Stay open, inhale inward; it must not be closed
Use nitrogen for purging; that one is the filter element
It shouldn’t be; when it’s in operation, this valve is open, and there’s a small hole on one side that allows air to be drawn in
That shouldn’t happen. After all, as you said, if it’s air that’s being drawn in, then under certain conditions oxygen can cause an explosion. Consult the manufacturer first before using it
Things like cooling and purging – dry pumps have a high compression ratio, and certain substances can cause carbon buildup inside the pump chamber. Each manufacturer has its own characteristics, so it’s best to consult the manufacturer directly. We usually use steam, nitrogen, etc. for purging or balancing the vacuum level.
I’ve learned it; thanks for your guidance, friend
It is directly connected to the interior of the pump chamber; it serves to reduce temperature, and there is a filter inside the black part.
The small hole adjacent to it should not allow air to enter while the device is in operation; instead, air should enter through the air filter. If air is entering through the adjacent hole, check whether the position of the handle is incorrect. It’s possible that such a ball valve has three holes inside – at one position, the adjacent hole and both the upper and lower parts of the tube are connected, but when the handle is rotated to another position, only the upper and lower parts remain connected, while the adjacent hole is closed. Like the cock that connects the elbow of the pipe to the pressure gauge.
Air-entraining filter. Draw external air into the pump chamber. 1. Cooling pump body ； 2. Supplemental gas flow rate. Do not use it when the process medium for suction is flammable and explosive.