
The Candle Filter is a state-of-the-art automatic filtration system that redefines efficiency. This innovative filter equipment utilizes a core of filter cartridges serving as its skeletal framework. The magic lies in the filter medium, which consists of expertly designed filter cloth and filter cake layers that seamlessly envelop the filter cartridges. By harnessing the power of pump pressure, this system delivers unparalleled liquid clarification, ensuring pristine results every time.
The Candle Filter offers remarkable versatility, allowing you to customize your filtration process. Select from a diverse range of filter materials, each tailored to your specific needs, including filter medium, desired filtration precision, and the viscosity of filter residues. This adaptability ensures optimal performance across a wide spectrum of applications.
As the slurry is gracefully pressed into the pressure vessel, its journey begins from the bottom, rising upwards. This strategic approach ensures that solid particles gracefully settle on the surface of the filter candle, forming a uniform suspension and guaranteeing a consistent, flawless filter cake.
A beautiful filter cake forms delicately on the exterior surface of each stainless steel candle filter element. Ingeniously designed, the filter candles in each row are artistically connected at the top through a series of both connection types, parallel and serial, all meticulously tailored to meet precise process requirements.
The slurry discharge pipe, seamlessly integrated with the level set, is expertly attached to the primary branch line using advanced electric valves. These intelligent valves orchestrate the filtration and reverse wash processes, optimizing the online formation of the filter cake with precision flow control. The electric control system channels all header slurries into the main branch line, crafting a sophisticated and continuous loop filtering process.
- Overview and vent nozzle
- Innovatively designed saddle flange for heel filtration spray jet nozzle
- Precision-engineered 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 Ingenious Composition of the Candle Filter Design
-Robust Vessel shell
-Featuring a vessel shell with a conical bottom, meticulously designed for filtering and refining the filter cake.
-A vessel with a concave bottom ingeniously crafted to thicken the slurry.
-Sophisticated Candle filter element
-An efficient discharge mechanism for the filter cake
-Each component can be crafted from specialized structural materials, expertly meeting all process requirements.
Detailed Insights into 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 |
- Embrace a revolution in filtration with our fully enclosed solid-liquid separation system. At Hebei Slot Filter Technology Co., Ltd., we offer a system where every stage-from filtration and washing to drying and slag discharge-occurs in a seamlessly closed container. This innovative approach ensures a reduced process flow, minimizing labor demands and eradicating any risk of leakage or environmental pollution.
- Experience the pinnacle of separation technology with our system that excels in dry and wet separation. Not only does it guarantee unmatched filtration accuracy for clear liquids, but it also ensures effortless automatic discharge of solids as dry filter cakes. This clever design eliminates the cumbersome necessity of cleansing traditional filter elements, streamlining your operations like never before.
- Our cutting-edge PLC automatic control system ensures that the operation is highly automated and efficient. When compared to traditional filter presses, closed plate types, and suction filter cylinders, our system stands out by drastically reducing labor and time costs while preserving the seamless continuity of production processes.
- Featuring automatic cleaning and regeneration capabilities, our solid-liquid separation system allows for multi-cycle use of filter media. This advancement addresses the challenges faced by traditional filters, which often require frequent replacements and generate excessive consumable waste.
- Effortlessly achieve sub-micron filtration accuracy with our advanced solid-liquid separation system. This breakthrough solution effectively overcomes the leakage and incomplete filtration issues encountered by traditional equipment when processing materials with high solid content.
- Our system's static primary structure, complemented by dynamic backflushing, ensures lower failure rates and reduced operational costs, promising reliable performance and outstanding longevity.
- Ingeniously designed filter element grouping decreases air consumption during backflushing and isolates any damaged filter elements, enhancing the system's efficiency and reliability.
- Candle filtration has emerged as the dominant filtration method, surpassing filter press and bag filtration systems. Not only does it sustain production continuity, but it also significantly mitigates the risk of production incidents, amplifies efficiency, and curtails labor demands, establishing a new standard for industrial filtration.
Beverage Industry
Our High-Efficiency Candle Filter plays a vital role in the beverage industry by ensuring the pinnacle of purity and quality. It excels in fructose syrup filtration, as well as the critical decarbonization and decolorization processes for a range of acids including citric, malic, sulfuric, and lactic. The filter's precision is unmatched in lycopene filtration and extends to the meticulous decarbonization and decolorization of monosodium glutamate. It expertly handles the precision filtration of yeast and soybean protein, ensuring the highest quality in various fruit juices. Additionally, it is essential in the filtration of condiments such as soy sauce and vinegar. Beyond beverages, it assures purity in alcohols, crude oil, edible oils, and blended oils, solidifying its position as a cornerstone of filtration technology in the beverage sector.
Pharmaceutical Industry
In the biopharmaceutical landscape, the High-Efficiency Candle Filter is synonymous with excellence. It is integral to the rigorous filtration of fermentation broths and the crucial filtration of crystals. With its advanced design, it enhances the purity of mother liquors and suspensions, while ensuring the efficient recovery of catalysts. Its contribution to the pharmaceutical industry is invaluable, maintaining the highest standards of product purity and process efficiency.
Chemical Industry
In the chemical industry, our filter sets the benchmark for efficiency and precision. It excels in the filtration and recovery of pesticide intermediates, and effectively handles the complex filtration needs of refining waste plastics and tires, including titanium dioxide and black carbon powder. The filter is pivotal in processing biomass oil derived from straw and in recovering PTA mother liquor. For high-purity alumina and solvent oils like white oil, its filtration capabilities are unparalleled. It also provides crucial polyether desalination for oil sand crude oil. Its versatility extends to the filtration of various filter aids including activated carbon, clay, diatomite, and perlite. Moreover, it is essential in amine liquid desulfurization, decarbonization, and the recovery and filtration of PTA and PVC powders. The production and filtration of inorganic salts further highlight its indispensability in the chemical sector.
Water treatment
Our High-Efficiency Candle Filter is a beacon of innovation in water treatment, adeptly handling diverse wastewater challenges. It rigorously filters heavy metal wastewater from electroplating, circuit board production, and hot-dip galvanizing processes, as well as battery and magnetic material wastewater. Its precision extends to electrophoresis, coal mine, and coal stacking wastewaters, and it effectively treats fluorine-containing and chemical production wastewaters. The filter excels in removing suspended solids and purifying grinding liquids for electronic and optical lenses. Its role is critical in the precise filtration of pigment latex and waste paint waters. Furthermore, it assures the purity of river, groundwater, spring, swimming pool, and bath waters, making it indispensable in maintaining water quality standards.
Grease ink
In the realm of grease ink, our filter is unmatched in performance, delivering superior dewaxing, decolorization, and fine filtration of industrial oils. It is essential in processing biodiesel, hydraulic oils, waste oils, mixed oils, base oils, diesel, kerosene, lubricating and transformer oils. Its advanced capabilities extend to the dewaxing, decolorization, and filtration of vegetable and edible oils, ensuring the highest standards of purity and quality in diverse industrial applications.

Hebei SLOT Filter Technology Co., Ltd. As a comprehensive powerhouse in the realm of industrial precision and self-cleaning filtration, Hebei SLOT Filter Technology Co., Ltd. boasts over a decade of illustrious industry expertise. Our company excels in design and R&D, harnessing cutting-edge filtration technology and superior product offerings to deliver seamless, one-stop filtration solutions tailored to your needs.
SLOT proudly holds the prestigious ISO9001 quality management system certification and is certified by SGS, reflecting our unwavering commitment to excellence. We strictly adhere to global standards, industry-specific guidelines, and bespoke client specifications in both product design and manufacturing. Our mission is to pioneer the development of high-performance, top-tier filtration equipment and precision filtration components.
The SLOT automatic self-cleaning filter systems are celebrated across a multitude of sectors including petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged enduring and stable partnerships with a host of renowned industrial enterprises across the globe, both domestically and internationally.
Thanks to our exceptional filter performance, state-of-the-art manufacturing processes, and unparalleled professional services, SLOT stands as a beacon of excellence in the filtration industry. For those with exacting demands for system performance, quality, safety, and service, SLOT is the reliable long-term partner you've been searching for.

Quality Management
FAQ
1. Who are we?
We are headquartered in the vibrant region of Hebei, China, and have been pioneering technological advancements since 2014. Our products have a global reach, spanning across North America (40.00%), Western Europe (30.00%), and South Asia (10.00%).
Additionally, our presence extends into Africa (10.00%) and the Mid East (10.00%). Our dedicated team consists of approximately 11-50 skilled professionals, all committed to excellence.
2. How can we guarantee quality?
We ensure exceptional quality by offering a pre-production sample before mass production, allowing for meticulous evaluation.
Furthermore, we conduct a comprehensive final inspection prior to shipment, ensuring that every detail meets our stringent standards.
3.What can you buy from us?
Self Cleaning Filter,TDS Series Bag Filter,TLS Series Basket Filter,TWK Series PA/PE Micropore Filter,TXS Series Cartridge Filter,TZS Series Automatic Candle Filter and a series of filtration systems.
4. Why should you buy from us not from other suppliers?
1. Support OEM & ODM
2. We can help customers design drawings.
3. We have own professional research and development group.
5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken :English, Chinese, Spanish, Japanese ,Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian
If you're interested in becoming our esteemed agent within your local market, we invite you to reach out and connect with us. Your collaboration is highly valued.