rقواعد تشغيل وتصميم الفلتر بريس

Filter Presses Operation,Filter Press Manucacturers,Filter Filter Press Operation Attentions

1. The filter press feeding pressure must be controlled without exceeding the labeled maximum filtering pressure (displayed on the pressure gauge) when the filter press is fed and begins to work, otherwise the main frame’s normal use will be influenced.

2. The upper and lower limit of the electrical contact pressure gauge have been set before leaving Leo Filter Press Co.,Ltd., filter press users need not to reset them.

If need to adjust the pressure, the lower limit should be set when there is no leakage with a upper limit not surpassing 27Mpa.

3. When the filtration begins, please open the feeding valve slowly, the filtrate will be turbid at first, and it will turn clear, which is a normal phenomenon.

4. When cleaning the filter press cloth and filter press plates, prevent the power supply of the oil tank from water splash.

5. When filtering, due to filter press cloth capillarity, there will be some clear leakage between the sealing surfaces of the filter press plates, which is a normal phenomenon.

6. The high pressure overflow valve has been adjusted to 27MPa

If need to adjust the oil cylinder’s nominal pressure, please loosen the high pressure overflow valves completely , and start up plunger pump , then gradually adjust the high pressure overflow valve to the needed pressure, make sure not to surpass 27MPa.

7. The safety overflow valve has been adjusted to 29MPa

8. Please be careful when moving or replacing the filter press plate in order to avoid crash, smash or breakage.

The filter press plate should not be wrongly placed.

During filtration, filter press plate can not be disassembled, as it may cause an accident if the length of oil cylinder’s stroke distance is not long enough.

If the filter press plate is broken, please replace it in time, otherwise another filter press plate may be broken.

9. Before compressing filter press plate, make sure they are orderly arranged and close to the end of thrust plate and parallel with the thrust plate to avoid distortion of the side bars caused by the improper placement.

10. For membrane squeezing filter press models, check the blow air tube to see if it is clipped between sealing surface of the filter press plates before compressing .If it does, please clean it up in time.

11. At the same time, feeding pump and feeding valve, washing pump and water inlet valve, air inlet valve and compressed air, only one of the three groups can be opened.

12. The hydraulic oil should be filtered by the air filter before being filling into the oil tank to a needed oil level, prevent waste water and sundries from coming into oil tank to cause rust or stuff of the hydraulic units.

13. The electric control cabinet should be kept dry and clean, check each pressure gauges, magnetic valve coil and each electrical units regularly.

Make sure the filter press is working under normal conditions. After stopping filter press, please shut off the air switch and then cut off power supply.

14. The hydraulic units such as oil tank, cylinder, plunger pump and overflow valve should be cleaned by no-load running rotation method regularly.

Generally, the filter press should be cleaned every six month, the filtration accuracy of the industry oil should be 200μm .

Replace the hydraulic oil if the new filter press being used for 1-2weeks.When replacing the hydraulic oil, please clean away the dirty oil and clean up the oil tank.

The second oil replacing periodic is 1 month, and then replaces the hydraulic oil every three months.

(The hydraulic oil replacing periodic time can be shortened or prolonged, according to the filter press using environment)

15. When installing the pipeline for closed discharge models, discharge pipes should not higher than the effluent holes in order to reduce the discharging resistance and to guarantee smooth filtrate discharge.

16. The temperature of filter press membrane squeezing liquid should not be too low to prevent liquid from freezing ,which will damage filter press membranes.

by

general.dr

bahaa badr

waste water treatment consultant
Squeezing liquid should be kept clean to prevent from pipe and connector blocking .
The pressure of squeezing liquid should be risen slowly to prolong the service lifetime of filter press membrane.