Diaphragm pump vibration
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Our diaphragm pump already has a buffer tank, but the vibration is still quite high. Is there any good solution? Additionally, how should the check valve used with diaphragm pumps be selected?
Any reciprocating pump will experience some vibration. Installing buffers only helps to maintain a stable flow rate at the inlet and outlet; it doesn’t do much to reduce vibration. Unless the vibration is caused by the pump running dry, check the foundation of the equipment to see if there are any issues, or examine the inlet and outlet pipes to ensure that they aren’t imposing an excessive load on the pump’s inlet and outlet areas.
Check the process flow to see if the outlet is blocked!
By vibration, the poster is referring to the vibration of the pipes and the reciprocating pump, right? First, check whether there are any issues with the pipe installation. If the installation is correct, then a damper should be installed at the pump outlet rather than a buffer tank. The pulses generated by the reciprocating pump are the cause of the vibration; therefore, it is important to eliminate these pulses in order to reduce vibration as much as possible!
Check whether the damper is leaking air; if its airtightness is not good, it will experience significant vibration after being in use for some time.
Diaphragm pumps do not require check valves; their inlet and outlet ports function as check valves. Generally, hoses are used at the inlet and outlet, and buffer tanks are installed at the outlet to reduce vibrations. If vibrations remain excessive, it is advisable to consider using a diaphragm pump with a smaller diameter or to reinforce the fixation of the piping in order to reduce vibrations
It is possible to consider whether the operating frequency resonates with the inlet and outlet pipes.
Learning*learning* ~ Thank you all for sharing your experiences
May I ask: In what situations are diaphragm pumps used? Thank you!
Check whether the location of your pulse buffer is correct, whether the pressure adjustment range is appropriate, and whether the pipe fixing brackets are properly installed.
Actually, in 2006 when I was on a business trip to Tangshan Iron and Steel Company, I personally adjusted 4 diaphragm pumps, 3-inch ones (which are considered relatively large). At that time, we were using them to supply slurry for the design of a dewatering system, so as to carry out the dewatering process； At first, the vibrations were very intense; the noise could be heard from a distance, similar to the sound made by a train. Later, I took matters into my own hands and adjusted the positions of the supports and brackets according to the specifications, changing their spacing as well ； Then, additional components were added to the pump. In fact, what some people referred to as a damper is actually a buffer tank; since there is pulse flow in the piping of diaphragm pumps, using a buffer tank to regulate the volume change over one pulse cycle helps to reduce the vibrations in the piping ； It would also be good to add flanged connection hoses for inlet and outlet; they are very nice, in a light blue color ； Next, it is necessary to check the pump’s diaphragm; if the diaphragm is clogged or damaged, the resistance increases. Both pneumatic and electric pumps will result in higher consumption of actual power, which naturally leads to a loud noise! Finally, those bird gadgets never made any sound again!
What was said on the 11th floor is completely correct; it seems to be from a membrane press manufacturer
Diaphragm pumps are suitable for handling media with high pressure, high viscosity, solid particles, and strong corrosiveness, such as various chemical sludges, red mud, mortar, coal slurry, waste acid slurry, alkaline slurries, municipal sludge, clay slurry, etc.
During study*, we also often didn’t pay much attention to the pneumatic diaphragm pump in our unit; we weren’t sure what was going on, and whether it couldn’t handle substances with a high content of impurities.