Fault one: pear shaped filter cake
The pear-shaped filter cake means that the filter cake on the lower surface of the screen is thicker than the filter cake on the upper part of the surface, and has a shape similar to that of a pear, and is small and large, so it is called a pear-shaped filter cake. This situation is unreasonable because this situation reduces the available space of the filter and also causes the filtration rate to decrease and the filter cake to dry out, causing the filter cake to not vibrate.
Remedy: The pear-shaped filter cake is caused by the sedimentation of the solid matter staying in the canister, which can eliminate the phenomenon that the liquid in the canister can be returned to the canister to be filtered through the overflow port to form a circulation.
Fault 2: The filtered liquid is still very turbid
There are many factors that cause this phenomenon: the filter aid is too rough, the surface of the filter is damaged, the screen frame is not pressed against the screen, there is a gap, the O-ring at the filter is damaged or the seal is not good, and the filtration pressure is unstable. Solid impurities remain in the liquid discharge pipe.
Remedy: If the filter aid particles are too rough, the filter aid particles should be adjusted; the screen of the filter is broken, it can be taken out, inserted into the oil hole with a spare plug, and the spacer is placed at the cross position of the removed filter support. It is used to replace the filter; the O-ring of the filter is damaged, and the new O-ring can be replaced; in operation, it must be carried out in strict accordance with each procedure. If solid impurities remain in the pipeline, they should be removed.
Fault 3: The filtration pressure rises too fast and the filtration cycle is too short
This type of failure is mostly caused by blockage of the filter. The cause of this failure may be that the filter aid is too fine or the pump flow is too large at the beginning. If the filter is not clogged and the pressure is still rising rapidly, the filtration cycle is still very short, and a large amount of filter aid can be added to the filtrate to be added, usually in an amount of 2% by weight of the suspension.
The diesel decolorization filter is a new type of filtration equipment developed by Xinxiang Gaofu Screening Machinery Co., Ltd. based on the difficult problem of white clay in the diesel market and successfully applied in the diesel industry:
Automatic slag filter
The automatic slag filter has the following advantages compared to the plate and frame filter:
1. Compact structure and small footprint;
2. Good filtering effect, high precision and low loss;
3, vibration slag, avoid manual slag, easy to operate, low labor intensity;
4. Adopt stainless steel screen to avoid the disadvantages of replacing filter cloth or filter paper, reduce cost and improve production efficiency. Two parallels can realize continuous production.
5, fully enclosed filtration, environmental protection, low material loss.
Concerned about surprises
Label: Analysis and troubleshooting of common faults in automatic slag filter
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