How to maintain the plate and frame filter press, please consult the expert

Weifang Tianyuan Environmental Protection Technology Co., Ltd.'s plate and frame filter press is used for solid-liquid separation of various suspensions, with a wide range of applications. It is used in food, environmental protection, light industry, medicine, chemical industry, metallurgy, petroleum and other industries. It is especially suitable for fine filtration or sterilization filtration of liquid beverages such as large quantities of beer, liquor, wine, edible oil, etc.

The company has environmental protection engineering design and environmental protection equipment production qualifications, and can provide users with one-stop services such as technical consultation, process design, site layout, equipment installation and commissioning. On the premise of valuing credit, abiding by contracts and ensuring product quality, and based on the principle of multi-variety management characteristics and small profits and quick turnover, we have won the trust of our customers. Advanced technology, excellent equipment, exquisite production technology, scientific and standardized management, professional team and perfect sales system, covering 24 hours in China

There are many aspects to the maintenance of the plate and frame filter press, but the most important point is that it must be rinsed and run for a while when it is stopped every time it is used; For details, please log in to the official website of Zhengzhou Lianxing Metallurgical Equipment Factory**.

With automatic washing, ensure timely flushing, do not bring to clean up in time, electrical cabinets, oil pumps should be maintained daily, wearing parts should be protected, and replaced in time.

Zhengzhou Pengda Environmental Protection Technology Co., Ltd. is a professional manufacturer of plate and frame filter presses, with high-end quality, complete production equipment, timely after-sales service, and free engineering design solutions and technical guidance. And sell plate and frame filter press consumables, filter cloth, filter plate, faucet, handle and other consumables, warranty 3 years, lifelong repair.

Summary. 1. After a few years of use, for some reason, some grooves are washed out at the corners. Once a groove occurs, it expands rapidly until it affects the formation of the filter cake.

At first, the cake becomes soft, then it becomes a semi-thin slurry, and then the cake does not form. 2. Due to the special material of the filter plate, it is difficult to repair and can only be replaced, so it causes high spare parts consumption. 3During this period, we tried some patches, but the effect has not been good, so we have changed to use them recently.

How to repair the plate and frame filter press cloth.

1. After a few years of use, for some reason, some grooves are washed out at the corners. Once a groove occurs, it expands rapidly until it affects the formation of the filter cake. At first, the cake becomes soft, then it becomes a semi-thin slurry, and then the cake does not form.

2. Due to the special material of the filter plate, it is difficult to repair and can only be replaced, so it causes high spare parts consumption. 3During this period, we tried some patches, but the effect has not been good, so we have changed to use them recently.

4. The black and white repair agent is mixed according to the ratio of 1:1 5. The prepared repair agent is coated on the groove and coated with a slightly higher 6, and the filter cloth is quickly covered, and the filter plate is squeezed together to make the repair agent and the filter cloth stick together, and the groove is flattened at the same time 7. After squeezing for a period of time, the viscose is naturally formed and no longer changes, and it can be used normally at this time. 2. The main reasons for water seepage between the plates and frames caused by water seepage between the plates and frames are:

1. The hydraulic pressure is low 2, the filter cloth folds and there are holes on the filter cloth 3, and there are blocks on the sealing surface. The treatment method of water seepage between the plates and frames is relatively simple, as long as the corresponding hydraulic pressure is added, the filter cloth is replaced, or the lumps on the sealing surface are removed with a nylon scraper.

The installation method of the plate and frame filter press is as follows:

1. Design the embedded hole according to the foot size provided by the supplier, and use the double grouting method.

2. There should be enough space around the filter press to facilitate operation and maintenance.

3. The plate and frame filter press should be placed horizontally on the floor, and the rear top plate should be fixed on the foundation with foot screws. (Note: The foot screw is generally only fixed to the rear top plate, because the pull dry due to the pressure of the plate frame produces a certain downward bending, when the filter press presses to work, the pull dry is straightened, resulting in a small amount of displacement, if the two ends are fixed at the same time, it may lead to the compression is not tight or damage the frame.)

4. The material and specification of the filter cloth are determined according to the filtered material, pressure and temperature, and the appropriate filter cloth should be selected.

5. The plate frame is neatly arranged on the frame according to the requirements, and the processed filter cloth is neatly arranged on the filter plate, and the feed hole and rinsing hole between the filter plate correspond to each other.

6. Turn on the power supply of the plate and frame filter press and check whether it is normal. For mechanical transmission, check whether the forward and reverse rotation of the motor meets the requirements, whether the oil of the reducer and head oil cup is full, and whether the lubricating oil of the screw and gear is well added. Hydraulic transmission to check whether the sound of the gear pump is normal, whether there is leakage in the hydraulic system, and whether the piston rod in and out is stable.

1.Before operation, the compact filter press needs to be inspected: check that the filter cloth is folded or overlapped and that the power connection is normal.

After passing the inspection, the compaction operation can be carried out. First, press the "Start" button and the oil pump will start working. Then press the "Compress" button and the piston will push the hold-down plate to compress it.

When the pressing force reaches the set high pressure, the hydraulic system will stop automatically. The cylinder pushes the pressure plate to press each filter plate. At this point, a filter chamber is formed between the filter plates.

Two. After the feed filter press is compacted, the feeding operation can be carried out: the feed pump is started, the feed valve is slowly opened, and the feed pressure gradually rises to normal pressure.

At this point, observe the leakage between the liquid output of the filter press and the filter plate. After filtration for a period of time, the amount of liquid discharged from the outlet hole of the filter press gradually decreases, indicating that the filter residue in the filter chamber is gradually filled. When there is no liquid discharged from the outlet or only a small amount of liquid, it proves that the filter residue in the filtration chamber has been completely filled to form a filter cake.

If the cake needs to be washed or air-dried, it can be done later, and if it is not washed or air-dried, it can be unloaded. When the feed valve is opened, the material enters each filter chamber from the inlet of the thrust plate. The solid particles are extruded in each filter chamber to form a filter cake automatically.

The liquid is discharged through a liquid channel composed of each filter plate. Three. After the cake of the washing or air-drying filter press is full, the feed pump and feed valve are closed early.

Start the washing pump or air compressor, slowly open the washing liquid or inlet air valve, and wash or air dry the filter cake. When the operation is complete, turn off the lotion pump or air compressor and its valve, and then remove the filter cake. When the pressure of the filter press ends, the diaphragm inlet valve opens.

Delay for about 15 minutes to stop the diaphragm intake. Open the diaphragm exhaust valve and the diaphragm pressing is completed. 4. When unloading the cake, first close the feed pump and valve, washing liquid or air intake device and valve, and then press and hold the "release" button on the operation panel.

After the piston rod drives the pressure plate to retreat to a suitable position, release the pressed "release" button, manually pull the filter plate one by one, remove the filter cake, and clean up the filter residue stuck to the sealing surface at the same time to prevent the filter residue from hanging on the sealing surface and affecting the sealing performance and causing leakage. At this point, an operation cycle is complete. When the cylinder is retracted, the pressure plate is released.

Press the "Open Board" button to open the square board. The pull plate trolley opens each filter plate, and the filter cake falls off after the filter is pressed, which is convenient for centralized loading.

1) The installation of the filter press cloth must be flat and not folded, so as to prevent damage to the plate frame and leakage when compressing.

2) The working pressure of the hydraulic station shall not exceed 20MPa.

3) The filtration pressure must be less than 80, and the temperature of the filter material must be less than 80 to prevent leakage and deformation and tearing of the plate frame.

4) The relief valve of the control device must be adjusted to the minimum working pressure used to make the piston retreat.

5) When the plate and frame move on the main beam, it shall not collide or fall, and the force should be balanced to prevent damaging the handle and damaging the sealing surface.

6) The valves of materials, compression, washing liquid or hot water must be activated according to the operating procedures, and shall not be activated at the same time.

7) When cleaning the plate frame and filter cloth after unloading the cake, the hole should be unblocked, and the residue should not be allowed to stick on the sealing surface or in the feeding channel.

8) When the hydraulic system stops operating, the long rod handwheel of the operating device should be normally open, and the short rod handwheel should be normally closed to ensure safety and avoid waste of oil.