1. Analysis of the filter plate release and even oil leakage of the plate and frame filter press:
The hydraulic system of the plate and frame filter press mainly provides pressure. When the oil chamber A increases the oil, the piston moves to the left, and the filter plate is pressed to seal it. When the oil chamber B is filled with oil, the piston moves to the right and the filter press filter plate is released. Due to the precision of manufacturing, the hydraulic system of the filter press has fewer failures, so just pay attention to routine maintenance. Due to the wear and tear, oil leakage will occur every one year or so. At this time, it is necessary to repair and replace the O-ring.
Solution:
Common filter press hydraulic failures and pressures remain unsuitable and hydraulic cylinders are not propelled. The main reasons for the inability to maintain pressure are oil leakage, O-ring wear and improper operation of the solenoid valve. The usual treatment methods are to remove and inspect the valve, replace the O-ring, clean the check solenoid valve or replace the solenoid valve.
If the hydraulic cylinder of the filter press is not suitable for propulsion, it is obvious that the air is sealed inside. At this time, as long as the system is pumping air, it can be quickly solved.
Second, the plate frame filter press filter plate walks slowly or even falls off the fault analysis:
Sometimes, due to oil stains and excessive stains on the guide bar, the plate filter press filter plate will be slow to walk, and even will fall off.
Solution:
At this time, it is necessary to clean the guide bar in time and apply butter to ensure its lubricity.
It should be noted that it is strictly forbidden to apply thin oil on the guide rod, because the thin oil is easy to fall and the lower side is very slippery. The personnel who are here to operate and overhaul can easily fall, causing personal injury accidents.
3. Analysis of the groove defect in the filter plate of the plate and frame filter press:
After a few years of use, the filter press filter plate causes some grooves to be washed out at the corners for some reason. Once the groove marks appear, it will expand rapidly until it affects the formation of the filter cake. At first, the filter cake became soft and then became semi-sludge. After the Zui, the filter cake could not be formed. Due to the special material of the filter press filter plate, it is difficult to repair and can only be replaced with new ones, thus causing high consumption of spare parts. During this period, we tried some repairing agents, but the effect has been not good. When Zui changed to oil surface repair agent, the situation finally turned around. The trial effect was very good and the sealing effect was achieved.
Solution: 1. Clean the groove, leak out the fresh surface, clean it with a small saw blade, etc. 2. Dispense the two kinds of black and white repairing agent according to the ratio of 1:1. 3. Apply the prepared repairing agent to the groove and fill it. Slightly higher 4, quickly set the filter cloth filter cloth, squeeze the filter press filter plate together, make the repair agent and the filter cloth filter cloth stick together, while squeezing the groove 5, after squeezing for a while, stick The glue is naturally molded and will not change, so it can be used normally.
Fourth, the plate filter press filter cake is not uniform or formed into failure analysis:
There are many reasons for the failure or unevenness of the filter cake of the plate and frame filter press. The supply is insufficient or too thin, or there is a blockage phenomenon. For these faults to be carefully investigated, Zui finally finds the exact problem, and then solves the problem.
Solution:
The main solutions are: increase feeding, adjust the process, improve the feeding, clean the filter cloth filter cloth or replace the filter cloth filter cloth, clean the blockage, clean the supply hole, clean the drain hole, clean or replace the filter press Filter cloth, increase pressure or pump power, low pressure start, continuous pressurization and other methods. V. Analysis of damage to the frame of the plate and frame filter press:
The reasons for the damage of the filter press plate itself are as follows: 1. When the filter plate of the filter press is not cleaned, sometimes the medium is leaked. Once leaked, the edge of the plate frame will be washed out with a small groove. A large amount of leakage caused the pressure to rise and the mud cake could not be formed. 2. If the outlet is blocked by solids or the supply valve is closed or the valve is closed when starting, the pressure is not leaked, causing damage. 3. If the supply is insufficient or the feed contains inappropriate solid particles, the plate frame itself will be stressed too much to be damaged. 4. When the sludge is too thick or the dry block is left, it will cause blockage of the feed port. At this time, there is no medium between the filter plates of the filter press, only the pressure of the hydraulic system itself is left. Extremely easy to cause damage.
Corresponding solutions: 1. Use nylon cleaning blade to remove the mud from the feed port. 2. Complete this cycle, reduce the filter plate volume of the filter press. 3. Check the filter cloth filter cloth, clean the drain port, check the outlet, and open the corresponding valve. , release the pressure 4, carefully clean the filter plate, repair the filter press filter plate.
6. Analysis of water seepage failure between plate and frame filter presses:
Causes of water seepage between the plates and frames 1. The hydraulic pressure of the plate frame filter press is low 2. The filter cloth wrinkles of the plate frame filter press and the filter cloth have holes 3, and the sealing surface of the plate frame filter press has a block.
Solution:
The treatment method of water seepage between the plate and frame filter press frame is relatively simple, as long as the corresponding hydraulic pressure is increased, the filter cloth is replaced, or a nylon scraper is used to remove the block on the sealing surface.
The hydraulic system of the plate and frame filter press mainly provides pressure. When the oil chamber A increases the oil, the piston moves to the left, and the filter plate is pressed to seal it. When the oil chamber B is filled with oil, the piston moves to the right and the filter press filter plate is released. Due to the precision of manufacturing, the hydraulic system of the filter press has fewer failures, so just pay attention to routine maintenance. Due to the wear and tear, oil leakage will occur every one year or so. At this time, it is necessary to repair and replace the O-ring.
Solution:
Common filter press hydraulic failures and pressures remain unsuitable and hydraulic cylinders are not propelled. The main reasons for the inability to maintain pressure are oil leakage, O-ring wear and improper operation of the solenoid valve. The usual treatment methods are to remove and inspect the valve, replace the O-ring, clean the check solenoid valve or replace the solenoid valve.
If the hydraulic cylinder of the filter press is not suitable for propulsion, it is obvious that the air is sealed inside. At this time, as long as the system is pumping air, it can be quickly solved.
Second, the plate frame filter press filter plate walks slowly or even falls off the fault analysis:
Sometimes, due to oil stains and excessive stains on the guide bar, the plate filter press filter plate will be slow to walk, and even will fall off.
Solution:
At this time, it is necessary to clean the guide bar in time and apply butter to ensure its lubricity.
It should be noted that it is strictly forbidden to apply thin oil on the guide rod, because the thin oil is easy to fall and the lower side is very slippery. The personnel who are here to operate and overhaul can easily fall, causing personal injury accidents.
3. Analysis of the groove defect in the filter plate of the plate and frame filter press:
After a few years of use, the filter press filter plate causes some grooves to be washed out at the corners for some reason. Once the groove marks appear, it will expand rapidly until it affects the formation of the filter cake. At first, the filter cake became soft and then became semi-sludge. After the Zui, the filter cake could not be formed. Due to the special material of the filter press filter plate, it is difficult to repair and can only be replaced with new ones, thus causing high consumption of spare parts. During this period, we tried some repairing agents, but the effect has been not good. When Zui changed to oil surface repair agent, the situation finally turned around. The trial effect was very good and the sealing effect was achieved.
Solution: 1. Clean the groove, leak out the fresh surface, clean it with a small saw blade, etc. 2. Dispense the two kinds of black and white repairing agent according to the ratio of 1:1. 3. Apply the prepared repairing agent to the groove and fill it. Slightly higher 4, quickly set the filter cloth filter cloth, squeeze the filter press filter plate together, make the repair agent and the filter cloth filter cloth stick together, while squeezing the groove 5, after squeezing for a while, stick The glue is naturally molded and will not change, so it can be used normally.
Fourth, the plate filter press filter cake is not uniform or formed into failure analysis:
There are many reasons for the failure or unevenness of the filter cake of the plate and frame filter press. The supply is insufficient or too thin, or there is a blockage phenomenon. For these faults to be carefully investigated, Zui finally finds the exact problem, and then solves the problem.
Solution:
The main solutions are: increase feeding, adjust the process, improve the feeding, clean the filter cloth filter cloth or replace the filter cloth filter cloth, clean the blockage, clean the supply hole, clean the drain hole, clean or replace the filter press Filter cloth, increase pressure or pump power, low pressure start, continuous pressurization and other methods. V. Analysis of damage to the frame of the plate and frame filter press:
The reasons for the damage of the filter press plate itself are as follows: 1. When the filter plate of the filter press is not cleaned, sometimes the medium is leaked. Once leaked, the edge of the plate frame will be washed out with a small groove. A large amount of leakage caused the pressure to rise and the mud cake could not be formed. 2. If the outlet is blocked by solids or the supply valve is closed or the valve is closed when starting, the pressure is not leaked, causing damage. 3. If the supply is insufficient or the feed contains inappropriate solid particles, the plate frame itself will be stressed too much to be damaged. 4. When the sludge is too thick or the dry block is left, it will cause blockage of the feed port. At this time, there is no medium between the filter plates of the filter press, only the pressure of the hydraulic system itself is left. Extremely easy to cause damage.
Corresponding solutions: 1. Use nylon cleaning blade to remove the mud from the feed port. 2. Complete this cycle, reduce the filter plate volume of the filter press. 3. Check the filter cloth filter cloth, clean the drain port, check the outlet, and open the corresponding valve. , release the pressure 4, carefully clean the filter plate, repair the filter press filter plate.
6. Analysis of water seepage failure between plate and frame filter presses:
Causes of water seepage between the plates and frames 1. The hydraulic pressure of the plate frame filter press is low 2. The filter cloth wrinkles of the plate frame filter press and the filter cloth have holes 3, and the sealing surface of the plate frame filter press has a block.
Solution:
The treatment method of water seepage between the plate and frame filter press frame is relatively simple, as long as the corresponding hydraulic pressure is increased, the filter cloth is replaced, or a nylon scraper is used to remove the block on the sealing surface.
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