A indústria já sabe como as bombas pneumáticas de diafragma conseguem atender a inúmeras necessidades com eficiência e flexibilidade. Além de apresentar um excelente custo-benefício, essas bombas também são de fácil operação e baixa manutenção, agregando muitos benefícios para a operação da sua indústria.
Contudo, dependendo da sua operação, a sua bomba pode sofrer com o acúmulo de gelo nesses equipamentos. Mas saiba que esse problema tem solução e criamos esse material para te ajudar.
In the face of malfunctions in your pneumatic diaphragm pump, the first step is to try to understand what is the cause of this problem and if there is really ice formation. For this, it is necessary to keep an eye out for some signs:
Your pump Is experiencing erratic fluctuations in pressure;
The engine is very cold;
The engine is suffering stops and resumes functionality after the ice melts;
It is necessary to make adjustments to the air supply or flow control to be able to maintain a more constant cycle;
The compressed air used is too humid.
Why does the pneumatic diaphragm pump freeze up?
During the pumping of fluids, the compressed air that feeds the pump undergoes an expansion process, and ends up cooling quickly. This usually happens when your pump is running at high discharge pressures so the cold air doesn't trap the steam. The result is supersaturated air, containing more moisture than it can hold.
When this supersaturated air touches a cold surface, it tends to undergo condensation and generate ice particles. These particles accumulate at the points of impact for two different reasons:
These locations create a favorable region for the fixation of ice particles;
These places interpose in the direction of the accumulation of air flow.
When the vapor present in the air quickly turns into ice and accumulates on a surface, we have a process called deposition. The colder the surface, the easier it will be for ice to form there.
To reduce this problem, you can install a dryer directly on the compressor so that the air has less moisture. It is also possible to remove the muffler and its muffler plate and gasket, as ice tends to build up on these components. But it is important to remember that removing the silencer will increase the noise levels emitted by the pump, which can be very harmful for the workers involved.
The type of fluid being pumped can also favor the freezing of your pump, especially materials that have a higher viscosity. The closer your pump is to its maximum pumping capacity, the lower the exhaust temperature.
Other problems that can favor ice build-up during fluid processing are:
Large volume of air supply for application;
Very long operating cycles;
Colder ambient temperature;
Compressed air used is too humid or of poor quality
How to avoid freezing problems on your pneumatic diaphragm pump
As we have seen, there are many factors that can favor the appearance of ice sheets in your pneumatic diaphragm pump. To help you, here are some very viable solutions to resolve this condition:
Use plastic mufflers as they do not cool down and are less conductive than metal.
Use larger silencers to increase the surface area and reduce the time required for the structure to freeze;
Add a dryer to remove moisture from the air supply;
Pumping at a slower speed to reduce air pressure;
Use a silencer plate with a heatsink;
Ensure that the tubing used is the correct size for the dimensions of Your pump;
Provide an escape path without twists and turns to prevent ice build-up at these points of impact when processing fluids.
If your pump is experiencing freezing it is important to know that daily pressure is one of the most efficient solutions to this problem. If you have any questions, please contact us and we have a team prepared to help you.
PNEUMATIC DIAPHRAGM PUMPS WITH FLAP - HUSKY 2150LP- GRACO
