JDD Series Self-cleaning filter

  Product Introduction
The high-efficiency scraper-type self-cleaning filter automatically removes particulate impurities from the outer surface of the filter element via mechanical scraping, enabling continuous online filtration. Designed primarily for high-precision filtration, the electric scraper-type self-cleaning filter offers a filtration accuracy range of 25–3000 microns. It delivers precise filtration, minimizes the risk of crushing impurities, and efficiently removes a greater volume of contaminants. Suitable for filtering water and various viscous liquids, it can handle viscosities up to 800,000 centipoise. Manufactured to high-performance, high-quality, and high-reliability standard specifications, it meets world-class quality standards.
Traditional filters frequently clog when processing viscous materials and soft impurities, forcing customers to either use oversized filters or perform labor-intensive manual cleaning—resulting in high investment, heavy workloads, and significant material waste. The electric scraper-type self-cleaning filter easily resolves these challenges through its advanced self-cleaning operation. It consistently maintains filter element cleanliness and discharges waste liquid with high impurity concentrations, reducing material loss. It excels at filtering poor-quality water and viscous substances such as adhesives, resins, polymers, and oils, delivering superior efficiency.
With its notable technical advantages and low operating costs, the electric scraper-type self-cleaning filter is gradually replacing traditional manual filters in many applications, including vibrating screens, bag filters, basket filters, and certain backwash-type self-cleaning filters.
Working Principle
Liquid flows into the filter through the inlet and passes inward through the outer surface of the filter element, with the lower end of the filter element connected to the outlet for liquid discharge. When a certain amount of impurities accumulates on the filter element surface, a cleaning cycle is initiated either on a timed schedule or at a preset differential pressure. A reduction gear motor drives a scraper positioned obliquely against the filter element’s outer surface to rotate, scraping impurities off the filter element surface. The impurities move away from the filter element along the scraper, flow downward with the liquid to the bottom of the filter, and a rotating sweep plate directs heavy bottom impurities into the dirt collection chamber. Impurities accumulate in the chamber and at the filter bottom; the drain valve opens automatically at set intervals to discharge high-concentration impurity liquid through the drain port. Residual liquid can be recovered if required.

Technical Features and Advantages
1.Fully automatic operation with 24/7 continuous online filtration, eliminating the labor-intensive work of replacing and cleaning filter elements.
2.No disposable filter consumables required, reducing consumable costs and environmental disposal expenses.
3.Metal blade scrapers deliver exceptional scraping performance, enhancing impurity removal efficiency and preventing impurity crushing.
4.Premium V-SLOT filter elements feature precise gaps, an ultra-smooth surface for easy cleaning, high strength, and long service life.
5.Minimal filtration pressure drop ensures stable flow rates, reduces energy consumption, and supports consistent process operation.
6.Optional backwash function available for auxiliary cleaning of filter elements.
7.Sealed filtration prevents hazardous material leaks, supporting safe production.
8.Discharged waste liquid has high impurity concentration and is recoverable, avoiding losses of high-value materials.
9.Multiple modular combinations and automated modes available to meet diverse filtration requirements.
10.Equipped with internationally renowned brand reduction gear motors for high reliability and long service life.
11.Standard upper cover auxiliary lifting device enables single-person filter opening/closing.
Main Specifications of JDD Series Self-Cleaning Filter

Filter Model	273 Inner Scraper	325 Inner Scraper	450 Inner Scraper	500 Inner Scraper	550 Inner Scraper	650 Inner Scraper	700 Inner Scraper	800 Inner Scraper
Cylinder Diameter D	Φ273×3	Φ325×3	Φ450×3	Φ500×3	Φ550×4	Φ650×4	Φ700×4	Φ800×5
Inlet/Outlet N1/N2	DN40	DN50	DN80	DN100	DN150	DN200	DN250	DN300
Vent Port N3/N4	G 1/4"
Drain Port N5/N6	DN25	DN40	DN50	DN65	DN65	DN65	DN80	DN80
Inlet Height A	760	985	1270	1360	1550	1600	1660	1670
Outlet Height B	330	380	470	530	630	700	750	750
Pipe Length C	100	100	120	120	120	150	150	150
Total Height H	1230	1480	1860	1950	2150	2100	2120	2200
Mounting Dia. E	Φ400	Φ450	Φ580	Φ630	Φ680	Φ800	Φ880	Φ980
Reference Flow (m³/h)	20	45	100	120	150	200	250	350
Filtration Area (m²)	0.2	0.4	0.8	1	1.25	1.5	1.7	2
Filtration Accuracy	25–3000 μm
Max Design Temp.	0–200°C (depends on seals)
Filter Element	VSLOT slotted metal, 316L
Housing Material	304 / 316L / Carbon Steel
Scraper Material	PTFE
Seal Material	NBR (standard) / FKM
Drain Valve	Pneumatic ball valve, IP65

V-SLOT HighPerformance Precision Filter Element Advantages
(1)Accuracy: 50–500 μm
(2)Slot width precision: deviation < 5 μm
(3)Material: 316L, excellent corrosion resistance
(4)Vshaped slot: less clogging, stable flow
(5)Smooth outer surface: easy scraping, low wear
(6)Handles difficult impurities: oil sludge, soft agglomerates, etc.
(7)Hardened & wearresistant surface: long service life
(8)High strength: no deformation under differential pressure
(9)Resists high forward/reverse pressure
typical  Applications Industries
Applicable fields: oils, water treatment, papermaking, petrochemicals, fine chemicals, etc. Applicable liquid types: wax, kerosene, monomers, polymers, citric acid, fermentation broth, chitosan, cosmetics, agarose (gel), silicone solutions, soap, sorbitol, steroids, grain syrups, wet-end additives, adhesives, pigments, lubricants, coatings, resins, rubber, ethanol, mixed oils, edible oils, high-temperature oils, fruit juices, diesel, etc.