China-Made Gravity Valveless Filter Tank: Compact Structured Water Purifier
A Message to Our Customers
While we focus on substance over style, our expertise lies in manufacturing a comprehensive range of wastewater treatment equipment. Should you have any questions or requirements, please do not hesitate to contact us. Thank you.
Product Overview
Our factory produces two series of valveless filters:
Square CBL-II Filter
Round DLB-II Filter
The DLB-II series valveless filter operates without valves for intake, outflow, flushing, or drainage. Utilizing hydraulic action for fully automatic operation, it offers low operational costs, effortless management, and high reliability. Its integrated design combines the inlet tank, filter, and backwash tank into a single compact unit, saving space and simplifying installation.
Working Principle
Raw water enters the filter tank through the inlet pipe and passes downward through the filter layer.
Clean water is directed via a connecting pipe to a storage tank; once full, excess water flows into the clear water tank through the outlet.
As suspended solids accumulate, filtration resistance increases, raising the water level in the siphon tube.
When the water reaches the nozzle of the siphon auxiliary pipe, it draws air out of the siphon downgrade pipe, creating a vacuum.
Once a critical vacuum level is achieved, siphon action initiates, backwashing the filter media by moving water upward through the filter layer.
Backwashing concludes when the water level drops to the siphon breaker tube, allowing air to enter and break the siphon effect. The system then resumes filtration.
Applications
Our gravity valveless filters are widely applied in:
Surface water purification
Removal of iron and erbium from groundwater
Side-stream filtration in circulating water systems
Suspended solids removal in industrial wastewater
Post-filtration of biologically treated organic wastewater and secondary sedimentation effluent
Indoor swimming pool water filtration
Ideal for a variety of water treatment needs, these systems deliver efficiency, reliability, and cost-effective operation.
Parameters
| Specifications |
Water yield ( T / T) |
Pipe ping size (mm) | Equipment pipe orifice plane size (mm) |
Weight ( T. ) |
||||||||||
|
Ininlet pipe Diameter Dg1 |
Takeover Height H1 |
Outwater pipe Diameter Dg2 |
Takeover Height H2 |
Drainage pipe Diameter Dg3 |
Takeover Height H3 |
Φ1 | Φ2 | C | e | f | g | |||
| DLB 20-11 | 20 | 100 | 4710 | 100 | 400 | 300 | 300 | 1400 | 900 | 1134 | 755 | 655 | 215 | 21.9 |
| DLB 40-11 | 40 | 150 | 4810 | 150 | 450 | 300 | 360 | 1800 | 1000 | 1350 | 950 | 780 | 250 | 35.7 |
| DLB 60-11 | 60 | 200 | 4810 | 150 | 500 | 400 | 460 | 2240 | 1000 | 1540 | 1125 | 890 | 325 | 50.6 |
| DLB 80-11 | 08 | 200 | 4810 | 200 | 500 | 400 | 460 | 2460 | 1000 | 1636 | 1225 | 945 | 355 | 65.7 |
Packing and Delivery
1. Waterproof packing with the international export standard by 20ft, 40ft, 40hp container. Equipment Fittings, Electric Motor and Power Cabinet will be packed in Wooden Case or Iron Box. Other Equipment will be packed by Color-Stripes Plastic Cloth.
2. The whole plant machinery size are large as normal, so we will use Waterproof cloth to pack all of them. The motor, gear box or other easily damaged parts, we will put them into box. We have a professional shipping department, they will try their best to save your container quantity.
FAQ:
Q: Are You Trading Company Or Manufacture?
A: We Are Both Manufacture And Trading Company. We Have Over 30 Years' Professional Experience As a Waste Water Treatment Equipment Manufacturer And Engineering Service Enterprise.
Q : What Are Your Main Products?
A:Keywords :Sludge Dewatering Machine Equipment, Screw Type Sludge Dewatering Press Sludge Screw Press, Dewatering Sludge Machine Screw Press ,Sewage Treatment Equipment ,Sludge Treatment Plant,Screw Press Sludge Dewatering ,Dewatering Sludge,Dewatering Machine For Sludge, Dewatering Sludge Machine Screw Press, Rotary Drum Bar Screens, Equipment DAF, DAF Price ,Dissolved Air Flotation System Price, Sludge Shaftless Screw Conveyor,Chemical Dosing Device ,MBBR Price,MBBR Media,Disc Diffuser, Polymer Preparation Chemical Dosing System, and other customized machines.
Q: How Can I Find The Suitable Model?
A: Please Provide Flow Rate, Solids Content And Sludge Type, or directly contact us by the clicking the “contact” icon. We Can Assist You In Model Selection.
Q: Where Is Your Factory Located?
A: Yixing City, We are in the famous city of environmental protection equipment ,professional for Sludge screw press dewatering Machine ,Which Is Very Close To Shanghai With Only Less Than 3 Hours' Driving. Welcome for your visiting.
Q: Do You Provide OEM Service?
A: Yes. We Can Do The Customized Design According To Your Different Request for sludge Dewatering.
Q: How About The Production Capacity Of Your Company?
A: Our Factory Covers Area Over 15,000m² And Produces Machines 2000 Sets Per Year.
Q: How Could We Trust You And Your Company? Is This Your First Time Transaction?
A: A: Our Company Has More Than 20 Years Professional Experience. We Cooperate Over 800 Customers in China And Overseas. We Export Nearly 60 Countries All Over The World. And We Have More Than 60+Patents, CE,ISO 9001,SGS Certificates.
Q: Do You Offer After-Sales Service?
A: Video Technical Support, Online Support,Spare Parts, Field Maintenance Repair Service
Q: How Long is Your Warranty?
A: 2 Years After The Arrival Of The Goods. During This Period, As Long As It Is Not a Man-Made Damage, We Send The Damaged Parts Free Of Charge.
