Common Faults of Oil Filters and Their Solutions
A vacuum oil purifier is a multifunctional device that integrates vacuum drying, separation engineering, coagulation, adsorption, and filtration technologies. Under high vacuum conditions, it can rapidly and reliably remove water, gases, impurities, gums, sludge, and various colorants from oil, thereby reducing dielectric loss and acid value, enhancing emulsion-breaking efficiency, and improving oil quality.
Vacuum oil purifiers can meet more stringent and faster optimization requirements, playing a crucial role in the purification of the entire oil system. Let’s take a look!
(1) Filter plate damage is a common malfunction in chamber filter presses. If a large number of filter plates are damaged, the following factors should be analyzed:
① Manufacturing quality of the filter plates;
② Whether the selection of filter plate material is compatible with the head of the feedwater pump;
③ Under the diaphragm clamping method, both the oil‑filtration capability of the diaphragm plate and the machining quality of its internal steel liner should be taken into account.
Under normal conditions, the pressure on both sides of the filter plate is balanced. When the two sides are in different filtration stages—i.e., one side is undergoing filtration while the other is subjected to hydraulic squeezing—a pressure differential develops between the two sides, which can damage the filter plate. The reason is:
① During the discharge process, the amount of residual sludge on the two sides of the filter plate varies significantly.
(2) After the filter press begins filtration, if the feed pump remains stopped for an extended period, the filter cake in the filtration chamber, which is in a semi-fluid state, will settle to varying degrees.
③ The feed inlet of the filter plate is blocked.
② Spray the material between the filter plates.
During the filtration process, automatic vacuum oil filters may experience material spitting between the filter plates. The reasons are as follows:
① On the pressing surface of the filter plate frame, the filter cloth is folded.
② Filter cloth damage;
③ Both side beams exhibit varying degrees of lateral bending (in the horizontal direction);
④ The thrust plate is not tightly pressed, or the hydraulic cylinder’s clamping force is too low.
The solution is to carefully remove any residual filter cake from the pressing surfaces of the filter plates during discharge—especially in the lower section—or to clean the filter plates promptly, ensuring that their pressing surfaces remain clean; additionally, secure the filter cloth tightly to maintain its smoothness.
Related Information
What should you pay attention to when purchasing a vacuum oil purifier?
When purchasing a vacuum oil filter, the first step is to understand the functions of the different types available, and then choose the one that best suits your needs.
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