
Our Candle Filter is a state-of-the-art, automatic filtration marvel. Engineered to use the filter cartridge as its robust backbone, this innovative filter leverages both filter cloth and filter cake layers enveloping the cartridge, expertly utilizing pump pressure to achieve unparalleled liquid clarity.
The Candle Filter offers customizable versatility, enabling selection of an array of filter materials. Tailor your choice to match the filter medium, desired precision, and the unique viscosity of filter residues, ensuring optimal performance for every application.
Immerse yourself in the innovative workings of our system: as the slurry gracefully enters the pressure vessel, it follows an upward trajectory. This carefully orchestrated movement nurtures a uniform suspension, coaxing solid particles to gently settle upon the filter candle's surface. The result? A harmonious, consistent filter cake that exemplifies excellence.
Filter cakes elegantly manifest on the external surface of each stainless steel candle filter element. With precision engineering, the filter candles are seamlessly linked in a blend of series and parallel connections, thoughtfully tailored to meet exacting process demands. This intricate design harmonizes with the sophisticated requirements of your operations.
Ingenious design meets advanced control: the discharge pipe, a critical component, is elegantly joined to the level set. Each set tube is meticulously connected to the primary branch line via electric valves. These valves are the maestros, orchestrating filtration and reverse washing with precision. They perfect the online formation of filter cakes, ensuring optimal flow control. All header slurries converge on the main branch line, creating a seamless loop filtering process managed with electronic finesse.
- Overview and vent nozzle
- Saddle flange for heel filtration spray jet nozzle
- Filtrate nozzles
- Register
- Filter element
- Pressure vessel shell
- Filter medium (cloth, felt, membrane etc.)
- Cloth clamp ring
- Product feed nozzle
- Heel volume nozzle
- Solid-residue discharge nozzle
The Composition of the Candle Filter Design
-Vessel shell
-In the realm of filtering and polishing, the vessel shell, with its elegant conical bottom, stands as a beacon of efficiency.
-Envision a vessel with a concave bottom, masterfully crafted to enhance the thickening of the slurry with unparalleled precision.
-Candle filter element
-A masterfully crafted discharge mechanism for filter cakes
-Crafted from unique structural materials, all components are designed to meet the highest standards of process efficiency and excellence.
Details of Candle Filter Elements


Model |
Cartridge QTY |
Cartridge Size
(mm) |
Filtering Area
(m2) |
Capacity
(t/h) |
Housing Volume
(L) |
Inlet |
Cake Discharging Outlet |
Total Height
(mm) |
Dimension (mm) |
TZS-1 |
7 |
90*500 |
1 |
2.2 |
140 |
DN25 |
DN150 |
1902 |
φ1000 |
TZS-1.5 |
10 |
90*500 |
1.5 |
3.3 |
180 |
DN25 |
DN200 |
1928 |
φ1000 |
TZS-2 |
7 |
90*1000 |
2 |
4.4 |
220 |
DN32 |
DN150 |
2402 |
φ1200 |
TZS-3 |
10 |
90*1000 |
3 |
6.6 |
280 |
DN40 |
DN200 |
2428 |
φ1200 |
TZS-4 |
14 |
90*1000 |
4 |
8.8 |
400 |
DN40 |
DN200 |
2502 |
φ1300 |
TZS-6 |
19 |
90*1000 |
6 |
13.2 |
560 |
DN50 |
DN250 |
2578 |
φ1400 |
TZS-8 |
24 |
90*1000 |
8 |
18 |
740 |
DN65 |
DN250 |
2644 |
φ1500 |
TZS-12 |
40 |
90*1000 |
12 |
26 |
1200 |
DN65 |
DN300 |
2854 |
1300*1440 |
TZS-18 |
64 |
90*1000 |
18 |
40 |
1800 |
DN80 |
DN400 |
2904 |
1440*1540 |
TZS-30 |
106 |
90*1000 |
30 |
66 |
3000 |
DN100 |
DN500 |
3440 |
1800*1940 |
TZS-40 |
140 |
90*1000 |
40 |
88 |
3815 |
DN150 |
DN500 |
3560 |
2000*2140 |
TZS-60 |
190 |
90*1000 |
60 |
132 |
5700 |
DN150 |
DN500 |
3700 |
2000*2140 |
- Our fully enclosed solid-liquid separation system revolutionizes the industry with its seamless process integration. From filtration to washing, drying, and slag discharge, each step unfolds within a closed container, streamlining the workflow, minimizing labor, and ensuring zero leakage, thereby eliminating environmental pollution.
- Achieve excellence in solid-liquid separation with our system's capability for both dry and wet separation. It guarantees crystal-clear liquid filtration accuracy, and boasts an automatic discharge of dry filter cakes, completely bypassing the cumbersome need for traditional filter element cleaning.
- Experience the height of efficiency with our PLC automatic control. This cutting-edge technology delivers a highly automated system operation, significantly reducing labor and time costs compared to conventional methods like filter presses and suction cylinders, all while ensuring seamless production continuity.
- Our innovative system features automatic cleaning and regeneration, enabling repeated use of filter media. This effectively addresses the costly challenge of frequent filter replacements and the handling of excessive consumables typical in traditional systems.
- Achieve unparalleled filtration with sub-micron precision, effectively resolving the challenges of leakage and incomplete filtration that plague traditional equipment when processing high-solid-content materials.
- Built with a static main body and dynamic backflushing, our system boasts a remarkably low failure rate and minimal operating costs, providing reliable and cost-effective operation.
- Ingeniously designed filter element grouping minimizes backflushing air consumption and isolates any compromised filter elements, ensuring optimal performance and efficiency.
- Candle filtration is at the forefront of modern filtration methods, replacing filter press and bag filtration to maintain production continuity, significantly reduce the risk of accidents, enhance efficiency, and cut down labor requirements.
Beverage Industry
Our Durable Candle Filter excels in the Beverage Industry with unparalleled precision. It is perfectly suited for fructose syrup filtration, ensuring clarity and purity. Whether it's decarbonizing and decolorizing citric acid, malic acid, sulfuric acid, or lactic acid, our filters deliver pristine results. Enhance the quality of lycopene and monosodium glutamate through our sophisticated filtration processes. Ideal for the precision filtration of yeast, soybean protein, and various fruit juices, our product ensures quality and consistency. From soy sauce and vinegar to alcohol and beverages, as well as crude, edible, and blended oils, experience the ultimate in filtration technology.
Pharmaceutical Industry
In the Pharmaceutical Industry, our filters are indispensable. They provide efficient biopharmaceutical filtration, ensuring the purity of fermentation broths and crystal clarity. Whether filtering mother liquor, suspensions, or recovering catalysts, our filters promise precision and reliability for all your pharmaceutical needs.
Chemical Industry
Our Durable Candle Filter is a powerhouse in the Chemical Industry, offering unsurpassed filtration and recovery of pesticide intermediates. It's perfect for filtering titanium dioxide and black carbon powder, especially in the refining of waste plastics and tires. With excellence in filtrating biomass oil from straw, PTA mother liquor, high-purity alumina, and solvent oils like white oil, our filters set the standard. Whether it's polyether desalination of oil sand crude oil or filtering aids like activated carbon and diatomite, our product stands unrivaled. From amine liquid desulfurization and PVC powder recovery to the production of inorganic salts, rely on our filters for unmatched efficiency.
Water treatment
For Water Treatment, our filters provide exceptional performance across various types of wastewater, including heavy metal, battery, and magnetic material wastewaters. They excel in treating electroplating, circuit board production, and hot-dip galvanizing wastewaters. From coal mine and stacking wastewaters to fluorine-containing and suspended solids wastewaters, our filters ensure clarity and safety. Perfect for grinding liquid filtration in electronic and optical lenses, and precision filtering of pigment latex waste paint water. Our filters also deliver enhanced purification for river, groundwater, spring, swimming pool, and bath waters.
Grease ink
In the realm of Grease Ink, our filters shine with unmatched efficiency. They perform dewaxing, decolorization, and fine filtration of industrial oils with precision. Whether tackling biodiesel, hydraulic, waste, mixed, base, diesel, kerosene, lubricating, or transformer oils, our filters offer unparalleled clarity. The dewaxing, decolorization, and filtration of vegetable and edible oils are executed with exceptional quality for optimal results.

Hebei SLOT Filter Technology Co., LtdImmerse yourself in the innovative world of Hebei SLOT Filter Technology Co., Ltd., a pioneering enterprise dedicated to the art and science of industrial precision and self-cleaning filtration. With over ten years of expertise, we stand at the forefront of design and research, channeling advanced filtration technologies and premier product resources to deliver all-encompassing, seamless filtration solutions tailored to meet your needs.
Recognized for excellence, SLOT proudly holds the ISO9001 quality management system certification and the revered SGS certification. Our unwavering commitment to excellence ensures every product meets and exceeds international standards, industry-specific regulations, and bespoke client demands. We are devoted to the creation of high-performance and superior-quality filtration equipment and precision components.
SLOT's state-of-the-art automatic self-cleaning filter systems find versatile applications across an array of industries. From petrochemicals to fine chemicals, energy to water treatment, automotive to food and beverage, and metal processing, our solutions provide unmatched reliability. With enduring partnerships with renowned industrial titans across the globe, we continue to lead and innovate.
Our commitment to excellence is reflected in our superior filter performance, cutting-edge manufacturing, and unparalleled professional services. For those who demand the highest standards in filter system performance, quality, safety, and service, SLOT stands as the definitive partner for sustained success and trusted collaboration.

Quality Management: We adhere to the highest standards of quality, ensuring every product that bears our name is nothing short of perfection.
FAQ: Your questions, expertly answered. Discover insights and solutions tailored to your needs.
1. Who are we? Unveiling the essence of Hebei Slot Filter Technology Co., Ltd.
We are proudly headquartered in Hebei, China, since 2014. Our reach extends globally, with sales in North America (40.00%), Western Europe (30.00%), and South Asia (10.00%).
We also serve Africa (10.00%) and the Mid East (10.00%). Our dynamic team consists of 11-50 skilled professionals, dedicated to excellence.
2. How can we guarantee quality? Our commitment: Excellence at every stage.
We provide a pre-production sample to ensure your expectations are met before mass production begins;
Diligent final inspections are conducted prior to every shipment, assuring you of our quality promise.
3. What can you buy from us? Discover a world of superior filtration solutions.
Our offerings include Johnson Screen, Bridge Slotted Well Screens, Sand Control Well Screens, and Gravel. Additionally, explore our pre-pack Screen, Pipe-based screen, Perforated Pipe, and API/5CT Casing and Tubing.
4. Why should you buy from us and not from other suppliers? Trust, innovation, and excellence.
1. We support both OEM & ODM, tailoring solutions to fit your needs perfectly.
2. Our team is equipped to assist customers by crafting bespoke design drawings.
3. We boast a dedicated research and development team committed to pioneering excellence.
5. What services can we provide? Comprehensive solutions, delivered with expertise.
Enjoy a range of delivery terms including FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery, DAF, and DES.
We accept multiple payment currencies: USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF; ensuring seamless transactions.
Benefit from diverse payment options: T/T, L/C, D/P, D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
Our multilingual team is proficient in English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Eager to expand? We're looking for local market agents. Reach out to explore this exciting opportunity with us.