DMC型喷吹脉冲袋式除尘器说明书全英文].doc

DMC type jet pulsed bag filter manual1. Performance characteristics DMC type jet pulsed bag filter, absorbing the advanced technicals on the basis of the original DMC type jet pulsed bag filter, is a new generation bag filter which is according to our current actual situation of small air filter. It adopts high pressure and high flow pulse valve and venturi which spewed out dust for every filter-bag. It has the advantage of high efficiency. Especially when it clear dust on line, it can work continuously, which overcomes shortcoming of stopping out dust. It is widely used in metallurgy, mine, chemical, building, the mineral processing, grain, pharmacy and other industries. It filter material with polyester acupuncture felt, the emission concentration is lower than 50mg/Nm. With high quality filter material , it can collect 0.32 dust, which is more efficient than any other dust catcher.2 Main structure 2.1 Airframe structure 1. Ash valves2. Ash bucket 3. Tank body4. Access door5. Draught fan support6. Exhaust fan 7. Blowpipe8. Pulse valve9. Compressed air bag10. Dust collecting filter bag11. Control device 12. Inlet air door13. Outrigger 2.2 Blowing system 2.3、Construction proforma D MC N （A、B） A：ash hopper and discharge ash B：flange Filter bag number of article Pulse injection type Single filter1.principleof operation 3.1 principle of dust recoveryThe dust will fly to the bag house with airflow and spread around to the surface of the bag house equaly When the air with dust come from the air pipe or flange into the dust catcher. The dust will be stay outside of the bag house .and the air which has passed the bag house will get through the filter gate into the upside of air purification box .Then it will be atmospheric deposition through the exit exhaust fan. Some of the accumulation dust which attached to the outside of the bag house will drop into the ash hopper and some will stay still . And will make the installations resistance rise up .To make sure the installations resistance not exceeding 1500 PA . A thorough dust clean should be taken after few period .3.2principle of air blastThe drawing for the principle of air blast is as follow. The principle is the A head joint of the pulse valves will compress by-pass tube and the B head joint will blowing the Venturi meter. the pulse valves backpressure house connect with the air exhaust valves. And the air exhaust valves is controlled by PLC. The exhaust port will be sealed by the exhaust valves and active iron core ,when the PLC no signal. And the pulse valves was closed. Also the pulse valves will open through the PLC with signal when the exhaust valves make the back pressure house connect with the atmosphere.Then the pressed air will send out to the Venturi meter through the holes and pass through the pulse valves from the main tube. Leading the bag house mentally positive pressure. Carry out the principle of pulse ash removal3.3principle of ash removalIn the air cleaning house, every filtrate bag have a spray tube ,which was connect with the pulse valves and the main tube of the air compression . There a many holes in the spray tube.Every hole correspondence the center of the filtrate bag. And the ash removal time and period can be settled in PLC according to the nature dust during working time. The plc will control automatic in the ash removal time to control kinds of pulse valves open by order.At this time the high pressure air will blow out speedy from the spray nozzle. And will attached 5 -7time of the air around from the Venturi meter to mix it into the filtrate bag. And will pass through from inside to outside like a air bladder which moved from upside to downside .then make the filtrate bag expand and trans shape lead to shock vibration times and times then make the ash which outside the filtrate bag drop into the ash core.4. Installation 4.1 Delivery situation For the convenience and safe transport of the DMCdust collector, air bag pulse valve and exhaust fan in the injection system will be shipped according to the list. Tank body, ash bucket, ground jack, blast pipe, ash valves will be shipped in subpackage, and filter-bag will be shipped in packaging.4.2 Installation steps4.2.1 It needs to verify and understand the layout, equipment details figure, components of the equipment.4.2.2 It needs to check and examine the civil obligate holes, obligate steel plate, space dimension to see whether it is matched with design specification. The installation can go on if there is no errors. The installation goes on after deal with the difference.4.2.3 The installation of the ash bucketThe ash bucket can make a 180 turn. The four racks of the ash bucket should fall over the embedded steel plate, and the center of feed opening of the ash bucket is in line with the center of the obligate feed opening. No coincidence degree between the pitch and the embedded steel plate should not excess 1/4 inch. Non-levelness at the top of the ash bucket should1/10004.2.4. Filter vessel installationThe filter vessel is at the top of the ash bucket, associated with bolts can press with the asbestos among rope close closure. You should pay more attention to the direction when you install the machine. The surface of the draught fan should be at the obligate outlet.4.2.5. The installation of the holder and the draught fan. The holder is weld at the cage to support the draught fan. Motor base, motor frame and fan tents are associated, which is connected through adapting pipe and static air chamber in the cage. At the installation, the adapting pipe should be connected to air inlet of the draught fan, and then adjust the position of the adapting pipe and the motor stand and weld them better. Mark out the position according to the draft, weld the adapted pipe, and then cut the static air chamber. Please note that spindle of the draught fan should keep horizontal.4.2.6 Pulse valve, air bag installationA gas bag on the stent, stents, fixed and fan shell welding, according to fixed position stents pulse valve is uncertain, as measured the height of the pulse valve and gas distribution between above the bag with high pressure rubber hose connection, and the height of installation error should be adjusted in rubber shall, within the scope of contentious bag keep level. Air bag on both ends of the assembly, one by pressure gauge, and the other one by air filter.4.2.7 The installation of the air intake (dont contain ash hopper dust catcher without it)The air intake is welded by the ash hopper, its direction according to the technical requirement to determine the direction, installation height and Lou in the outside ash hopper according to determine the length of the selection chart4.2.8 High pressure air filter installationThis part installment is under guidance of personnel, one end connect gas bag , the other side join the compressor pipe .4.2.9 Ash valves installationThe upper mouth of ash valve hooks and ash hopper with flange connection, and the lower mouth connect with the non-standard parts4.2.10 The installation of the venturi, spring skeleton and the filter bagAfter the complishment of confirming the above work,adding the venturi tube of filters DingMen into flower board (spray wind has installed first dismantled), the spring skeleton set into the filter bag inside, then from the filter with the hook with threaded through the skeleton bottom and the skeleton, and then will spring fixed frame to set the venturi tube 3, 4 circle will venturi tube top, make the filter bag stuck in the hole, adjust the flower board to appropriate levels, then Then fixing the pothook which is under the spring sketch on the open pore at the bottom of the dust-collecting catcher.五Debugging5.1Injection system debug Before the adjusting,all the inlet door,access door should be closed&locked. Inject system debugging is mainly to check if there are gas leaks of the Injection pneumatic system or the pulse valve works well , control apparatus to control valves control is correct or not. Switch on the power, adjust air pressure to meet the design requirements. Check pulse valve and air bags, and nozzle connection place, such as a leaks when control apparatus can be turned on and watch the pulse valve injection case, if the action and correct, and then the test run. 5.2The test run5.2.1 In the above work is done, then adjust for empty load commissioning and loading test(1) Turn all the power on, compressed air source, clear grey controller(2) Start the Lord, observe empty fan load resistance (or U pipe pressure gauge) measurement of the import and export of air leakage rate, calculated leakage rate should be less than 5%. And observe fan motor temperature rise, no more than the temperature limit allowed, that is working properly.(3) If the air leakage is bigger, should be timely find air leakage points and processing.(4) Observing whether pulse system is functioning properly. If the above work all normal, then enter into loading test5.2.2 Load test(1) Start all the process equipment, access to survive the containing gas. Observe operation resistance and dust rise vent discharge conditions, in the new filter bag put into use, vent will have trace dust to escape, this is normal phenomenon, over a period of time will be eliminated(2) When the dust catcher resistance rise to (1200 1500 Pa), start out dust controller clear grey, and observe the pressure down(3) When the whole process system stability, and then after normal cyclical determination. The method is: first start out dust controller clear grey, and start time, when out dust is over, observe operation, when pressure rise to pressure (1200 1500 Pa), stop the clock. This period of time for soot cleaning cycle. This method should be repeat three times, take the average as soot cleaning cycle, adjust the soot cleaning controller(4) Watch out dust controller automatic control, everything is normal work, can put into normal operation.6.maintain and mend Dirt catcher can maintain long-term efficient operation, routine maintenance is very important.6.1, When equipment is operational, management should be designated persons, and do the operation records.6.2, management personnel should be familiar with the principle of dirt catcher, the properties and the application conditions, and mastery of the adjustment and maintenance method.6.3, seal ring and other should be keep strict, such as the discovery of aging and damage should change in time.6.4, Hull, components such as take off paint to repairing in time, to prevent corrosion.6.5, moving parts such as fan motor should be press formulary note oil, If found not normal phenomenon promptly eliminate.6.6, Air bags and air filters should be drained contamination once per shift.6.7, solenoid valve for any failures, should be promptly eliminate, such as internal have impurity, water, should be cleared, such as diaphragm damage should be changed in time.6.8, the repair and replacement of filter bag.If dirt catcher be found have gray dust phenomenon may be damaged, the filter bag when in dividual small area, can use the old filter bag or the same material make-up. If most of the filter bag breakage, shall all be replaced. Assurance the normal operation of the dust.11 DMC性能表 DMC CHARACTERISTICS 型号Model性能characteristicsDMC-32DMC-48DMC-64DMC-80DMC-96DMC-112总过滤面积Total Filter Area(m2)243648607284过滤风速Filter Air Speed(m/min)1.041.671.151.621.211.741.251.671.271.621.281.68处理风量Treatment Air Flow(m3/h)150024002500350035005000450060005500700065008500滤袋条数Number of Filter Pocket(条)3248648096112滤袋规格1202000 12020001202000120200012020001202000耗气量Air Consumptio