带式浓缩压滤机安装、调试、维护保养说明书英文版.doc

Installation debugging and maintenance of condensed belt press-filterA. Scope of application：ZDNY Belt-style condensing press-filter is a solid-liquid separating machine combining condensation, pressing and filtering and can work continuously and high-efficiently. It is applicable to any kind of solid-liquid sedimentation and separation of suspend material widely in chemical industry, metallurgy, mining, food, paper making, urban water supply, draining and many other fields. This equipment features easy craft flow, good applicability, small area occupation, short sludge stay and high ifficiency, saving investment in sludge removing condensation machine and pond B. Features: 1. This equipment combines condensation, press and filering, reducting investment in pond.2. This equipment features high automation, designed with pneumatic filtering belt deviation correcting device. 3. This equipment adopts condensation filtering water as flushing water, decreasing operation fee.4. This equipment features easy craft flow, good applicability, reasonable structure, small area occupation, short sludge stay and high efficiency.C. Equipment structure:The ZDNY machine consists of machine frame, conveying device, gravity dewatering, prepressing dewatering, upper/lower filtering belts, cloth device, filtering device, press roller, guide roller, discharge device, auto protection device, pneumatic control cabinet and electrical control.Working theories: the sludge mixed with flocculated suspend material goes into gravity centrifugal dewatering system, and under gravity, squeezing and overturning, the sludge will lose most of the free water. The sludge that goes through predewatering, goes through cloth chute and spreads evenly between the two sealed belts and into the rift between the two belts to be pre-dewatered. It then passes through rollers in the form of “s” from the least diameter one to the biggest, squeezing and cutting the filtered cake correspondingly to dewater. The material after being dewatered will be discharged from the outlet at the end of the machine.1. Machine frame: welded with chute steel used for fixing other parts and tails.2. Conveying parts: including motor, speed reducer, conveying shaft and gear wheel.3. Gravity dewatering: consists of rolling siege used for further stirring and condensing the sludge and flocculant. 4. Pre-pressing dewatering: After passing through gravity dewatering, the sludge has fully mixed with the flocculant and will go into double belts to prepare for afterwards filtering.5. Upper/lower filtering belts: called so because they include upper and lower filtering belts in between. They force the sludge to go into filtering stage and divided the sludge into two passages and then make the sludge circulate.6. Cloth device: evenly spreads the sludge on the filtering belts after dewatering.7. Filtering belts cleaning device: the meshes are filled with sludge after gravity dewatering and press filtering and have lost dewatering function. To clean away the sludge, high water pressure is required.8. Series of rollers: they are the center parts of the press filtering system, made up of rollers of different sizes. The rollers lies in descending order of the radium but the cutting force and pressure go up on the contrary with the order. This structure is called “S-shaped” series of rollers.9. Guide roller system: consists of guide rollers and deviation correcting device which will correct filtering deviation making the belts work only within required range.10. Filtered cake discharge device: after the press filtering is completed, the discharge device with filtered cake will scrape the cake into the conveyor.11. Auto protection device: mainly controls the machine when some errors occur to the press filtering machine to prevent malfunction.12. Pneumatic control system: corrects deviations and tighten air cylinders. It is equipped with vacuum press, pressure adjustor and barometer.13. Electrical control system: includes feed line, control cabinet, distance control, electromagnetic valve, approach switch and control chamber.D. Installation and debugging： The base of site should be injected with concrete and equipped with bicycles and electric hoists.Test base plane level with allowable deviation of 5mm.Size deviation of 10mm is allowable. Debugging：1. Every drive, conveying parts including speed reducer, bearings and gear wheels should be lubricated before operation.2. After connecting PC, check to see if drive parts turn in the same direction and if switches installation positions and movements meet requirements. Should there be any deviation, adjust and correct it in time.（Note：First remove the two scraping boards before connecting PC to avoid damage to scraping boards due to reverse operation of speed reducer.）3. Check to see if there is any leaking problem with the ports of pneumatic system. Should there be any, replace in time. （The pressure of pressure reducing valve should be less than the minimal pressure of vacuum press, or else it will bring about malfunction of parts.）4. Let the machine work for several hours before test run to make sure all parts are working normally.5. Parts tests: Observe the barometer during empty run to see if the value on the meter accords with requirements. Touch the deviation correcting device to see if it works normally. Check protection device and scraping board to make sure they are normal.6. Cleaning machine inside: there shouldnt be any matter that could damage filtering belts inside the box or else the belts might get damaged.Preliminary run：Start up, inject running water and open in order the vacuum press, conveyor, speed reducer and water pump(at first there is no filtering water so that water pump will be constant). When the sludge comes into the main machine, drain the waste water until the water comes out comparatively clean.(open and close for several times). When the cleaning nozzle is silted, turn the cleaning brush and draining the waste water.Observe the distribution amount of sludge which can be adjusted by sludge pump, normally thickness of 15-20mm, width same as valid width. When the sludge is too much and affects the feed-in amount of sludge pump, speed up the turning rate of filtering, less than 5m.The speed reducer should be adjusted to 2.4r/min at condensing phase. Adjusting turning rate of reducer can change the sludge outlet amount in a short time and change distribution situations.The tightening air cylinder should be adjusted to 0.4Mp. Observe the sludge outlet. When the water containing rate is comparatively high, then add air pressure, normally 0.7Mp. The pressure cant be too big or else it will bring about problems with cleaning and is recommended on 0.40.1Mp. When big range of sludge wont fall off, adjust the spring at the end to put on pressure. Too big pressure will cause speedy ware to belts.Let the machine run for several turns before shutdown, and the pump can starts and shuts according to water compensation until the belts are cleaned.Not frequently used cleaning pipes such as bearing plate cleaning, water reserving plate cleaning should be flushed twice a day to avoid silting inside pipes.Empty the water tank after all the cleaning.Flush the machine body, filtering belts after shutdown to keep clean.Repeat these activities at startup afterwards.The tank inside should be cleaned for long time standby.The above is the reference value of desilted sludge containing water of 99%99.5%. The value varies according to different parameters of sludge component and water containing rate.E. Commonly-met errors： 1 Deviation of belt can be caused by: a. nearby switch broken; b. electromagnetic valve broken; c. pressure reducing valve broken; d. leak from air pipe; e. pressure in pressure reducer bigger than minimal pressure of vacuum press; f. metal touching nearby switch is out of range of detection (8mm). 2Bad effect of cleaning may be caused by: a. nozzle holes small, easily silted; b. pump too small, insufficient water or pressure; c. flocculant not