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disc type cheap price water auto wtare filter
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Product Details
| Place of Origin | Jiangsu, China | Brand Name | Duoling | |
| Model Number | 3" |
Product Description
| Advantage | Characteristic |
| Constant filtering efficiency | As core element of filter, the uniformity of groove style filtering superposition piece reaches to international first rate standard. The filter is in effect for all kinds of suspension impurity including inorganic and organic impurity. |
| High efficiency backwash, energy and water saving | The unit of backwash will be finished for 7-20 sec only. In general the amount of consumed water in backwash is less than 0.5% of amount of filtering water. For viscosity impurity, high effective washing also be reached. The suitable scope is wider. |
| Full automatic control, flow continuously | The filtering and backwash may be carried out at the same time. The loss of pressure and flow rate produced by automatic maintenance of system is less. The backwash is carried out in turn one by one and the others work normally. |
| Low cost, reliable and long service life System | The system has been identified through IS9002 international quality system. And all the products are tested overall before sold. It's almost without daily maintenance, installation and convenient operation, reliability transportation. |
Working Principle of Endogenous Backwash System
The water to be treated comes from the inlet pipe to the two-position three-way valves. Under control of the valves, the water goes through each disc filter unit while the system is doing the filtration process. Water after filtering comes from inside of the filter units to the outlet port. When the filter units gather more impurities and the pressure difference reaches the setting value or the system reaches the setting time, the system will shift to backwash mode. For example, if the PLC gives a signal to the two-position three-way valve of the first filter unit, the valve will close the inlet port and open the drain port while the flow direction will change. The filtered water comes from the outlet pipe to the inside of the filter unit. With water pressure the filter unit generates a centrifugal helical effect which moves the particles away from the discs, and the sewage after backwash will discharge through the drain port. After that the filter unit comes back to filtration mode, and the system will make next filter unit do backwash mode. So the filter unit will do backwash one by one, when some unit is under backwash mode, others can still keep filtration state. When the pressure of water comes from outlet pipe is under 0.2MPa, an electric butterfly valve is needed to be installed in outlet pipe to meet the pressure requirements for backwash.
Working Principle of Exogenous Backwash System
The water to be treated comes from the inlet pipe to the two-position three-way valve on the inlet side. Under control of the valves, the water goes through each disc filter unit while the system is doing the filtration process. Water after filtering comes from inside of each filter unit to the two-position three-way valves on the outlet side. Under control of the valves, the water goes to the outlet pipe. When the filter units gather more impurities and the pressure difference reaches the setting value or the system reaches the setting time, the system will shift to backwash mode. For example, if the PLC gives a signal to two-position three-way valves on both sides of the first filter unit, the valve on the inlet side will close the inlet port and open the drain port, while the outlet side valve will close the outlet port and open the backwash port. Backwash water comes into the filter and brings the dirty to the drain port. After backwash the unit will come back to filtration mode. The system will make the filter unit do backwash one by one. When one unit is under backwash mode, others can still keep filtration state.
Working Principle of Filtration State:
Water to be treated comes from the inlet port into the surface of the disc cartridge. Since discs are tightly pressed by the spring on the top of the filter cartridge, with the water going through the outside into the inside of the disc cartridge, the impurity will be trap ped on the intersection of discs. After that the clean water comes out from inside of the filter to the outlet port.
Working Principle of Backwash State:
When the pressure difference reaches the setting value or the system reaches the setting time, the system will automatically enter the backwash mode. The PLC controls the valve and changes the water flow direction. Backwash water comes from the outlet port, and closes the one-way diaphragm on the bottom of the disc cartridge. Then the backwash water can only go through from nozzle channels on the interior center of the cartridge. High pressure of the nozzle channels tightens the spring and loses discs, meanwhile the backwash water squirts out from the channel along the tangent direction of discs and rotates and separates discs evenly, taking the impurities away from the discs. After backwash state, water flow direction changes and discs are pressed again, and the filter will enter filtration state.
Advantage and Characteristic of Filtering Efficiency
Advantage | Characteristic |
Stable Filtering Efficiency | As the core element of filter, the discs’ evenness reaches the word-class standard. The filter is in effect for all kinds of suspended impurities including organic impurities and inorganic impurities. |
Modular Design, Space Saving | Because the filter’s components are changeable, customers can choose in accordance with the actual demand. The system is compact and space-saving. |
High Efficient Backwash,Energy & Water Saving | It takes only 7 to 20 seconds to finish backwash for one filter unit. Generally backwash water consumption is less than 0.5% of filtering water. It is also efficient for filtering sticky impurities. |
Auto Control, Continuous Flow | Filtration and backwash can be performed simultaneously. Filter units do backwash one by one while the others are filtering. The system has the merits of low pressure, small flow loss and long life. |
Technical Specifications of the Filter (unit):
Hourly Flowrate of One Fiter (unit):
Good-Quality Raw Water
| Quality of water out (μm) | 10 | 20 | 30 | 50 | 80 | 100 | 120 | 150 | 200~800 |
Flowrate of 3” unit (m3) | 10 | 20 | 25 | 30 | 33 | 35 | 40 | |||
Flowrate of 4” unit (m3) | 25 | 50 | 65 | 80 | 85 | 95 | 100 | |||
Common-Quality Raw Water
| Quality of water out (μm) | 10 | 20 | 30 | 50 | 80 | 100 | 120 | 150 | 200~800 |
Flowrate of 3” unit (m3) | 8 | 15 | 18 | 20 | 25 | 28 | 30 | |||
Flowrate of 4” unit (m3) | 20 | 40 | 50 | 60 | 70 | 75 | 80 | |||
Poor-Quality Raw Water
| Quality of water out (μm) | 10 | 20 | 30 | 50 | 80 | 100 | 120 | 150 | 200~800 |
Flowrate of 3” unit (m3) | 4 | 11 | 13 | 15 | 17 | 19 | 21 | |||
Flowrate of 4” unit (m3) | 12 | 30 | 35 | 40 | 50 | 55 | 60 | |||
Worse-Quality Raw Water
| Quality of water out (μm) | 10 | 20 | 30 | 50 | 80 | 100 | 120 | 150 | 200~800 |
Flowrate of 3” unit (m3) | 2 | 6 | 8 | 10 | 12 | 14 | 16 | |||
Flowrate of 4” unit (m3) | 6 | 18 | 24 | 30 | 35 | 40 | 45 | |||
1. Shipping Ways:
1. By express: DHL, TNT, UPS, FEDEX, EMS etc, usually for small or regular and urgent orders;
2. By sea transportation for bulk quantity;
3. By air transportation.
2. Delivery time:
Shipping times are approximately 5-7 days for sample orders and 7-15 days for regular orders, after payment is done instantly by T/T, W.U. (weekends not included).
If we have any stock for your order, we will shipped out goods immediately on receipt of your payment.
Returns:
Situation 1
If no quality problem, there is no returns or refund. If there’s any problem not caused by us, we are pleasure to fix it by sending some spare parts to you, and please bare the shipping cost.
Situation 2
For any quality problem caused by us, we provide refund for returns made within 15 business days of the delivery date. Or we fix it or make new ones for you as request.
3. Payment:
We accept TT payment(Bank Transfer), L/C, Western Union & Cash, etc..
Please remember to send us scaned recipt of T/T or other payment copy by Email, this will speed up the processing of your order.
4. Warranty
All our products have at least 1 year warranty. If there’s any quality problems during the warranty period, we ship new spare parts for replacement free for you, or we accept return policy.
Contact Us
- Changzhou Duoling Water Treatment Factory
- Contact nameSarah Wang Chat Now
- Phone86-519-89691191
- AddressBeizhuang of Lijia Town in Wujin District, Changzhou, Jiangsu
Product Categories
| Coupling | different language | Felexible coupling | Filter |
| Flow meter | New Products | Plastic flowmeter | Plastic valve |
| Valve | water distributor | Water filter | windows product |
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