
Discover the Candle Filter: an innovative, state-of-the-art automatic filtration system designed to elevate your filtration processes. This remarkable equipment features a robust filter cartridge as its core structure, seamlessly coated by specialized filter cloth and filter cake layers. Through the utilization of precise pump pressure, this advanced mechanism ensures impeccable liquid clarification, meeting your stringent quality needs.
The Candle Filter offers unparalleled versatility by allowing the selection of optimal filter materials tailored to your specific requirements. Whether you prioritize filter medium compatibility, seek precision in filtration, or need to manage varying viscosities of filter residues, this adaptable system is engineered to deliver exceptional results across diverse applications.
When the slurry is introduced into the pressure vessel, it gracefully ascends from the bottom up. This upward journey facilitates the elegant deposition of solid particles onto the surface of the filter candle, ensuring a uniform suspension. This meticulous process guarantees the formation of a consistent and reliable filter cake.
Filter cakes form robustly on the outer surface of each stainless steel candle filter element. Designed with precision, these filter candles are ingeniously connected in both series and parallel formations at the top. This thoughtful arrangement is tailored specifically to meet the stringent demands of process requirements.
The sophisticated discharge pipe for the slurry is seamlessly integrated with the level set, while every set tube connects to the primary branch line through an electric valve. These electronic valves masterfully regulate filtration and reverse wash, optimizing the creation of the filter cake by meticulously controlling flow. The entire process is harmonized as all header slurries journey to the main branch line through electric control, creating a seamless loop filtering process.
- 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
-This vessel shell with an architecturally designed conical bottom is adeptly used for filtering and refining the filter cake.
-A vessel with a thoughtfully crafted concave bottom is employed for thickening the slurry.
-Candle filter element
-A sophisticated discharge mechanism for the filter cake
-Each of these components can be fashioned from exceptional structural materials, meticulously crafted to meet the unique demands of the process.
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 |
- Experience the pinnacle of efficiency with our fully enclosed solid-liquid separation system. Every step of the process-filtration, washing, drying, and slag discharge-occurs within a sealed container, streamlining operations and minimizing labor. Enjoy the benefits of a leak-free system with zero environmental pollution.
- Our innovative solid-liquid separation system masterfully achieves both dry and wet separation, ensuring impeccable filtration precision for clear liquids. Additionally, the system automatically releases solids as dry filter cake, eliminating the need for traditional filter element cleaning.
- Harness the power of PLC automatic control, delivering unparalleled automation throughout the system. Compared to conventional filter presses, closed plate types, and suction filter cylinders, our solution significantly cuts labor and time costs while safeguarding the seamlessness of your enterprise's production processes.
- Boasting automatic cleaning and regeneration, our system allows for the repeated use of filter media, eradicating the need for frequent consumable replacements that plague traditional filters.
- Achieve unparalleled filtration precision with our solid-liquid separation system, capable of sub-micron accuracy. This revolutionary technology effectively tackles the challenges of leakage and incomplete filtration that afflict traditional equipment when processing high solid content materials.
- Designed with a static structure and dynamic backflushing, our system boasts both a low failure rate and minimal operating costs, ensuring reliability and efficiency.
- Ingeniously engineered with a filter element grouping design, our system minimizes backflushing air consumption while efficiently isolating damaged filter elements.
- Candle filtration is emerging as the dominant filtration method, outshining filter presses and bag filtration. It ensures continuous production, elevates efficiency, mitigates production accident risks, and significantly reduces labor demands.
Beverage Industry
Our versatile Candle Filter with a filtering area spanning 1-60 M2 is indispensable in the beverage industry. Its robust design is perfect for fructose syrup filtration, offering seamless decarbonization and decolorization of citric, malic, sulfuric, and lactic acids. It efficiently filters lycopene and ensures the precision filtration of monosodium glutamate, yeast, and soybean protein. With our Candle Filter, achieve pristine clarity in various fruit juices, soy sauce, and vinegar. Experience the highest standard in the precision filtration of alcohol, beverages, and a variety of oils, including crude, edible, and blended oils.
Pharmaceutical Industry
In the pharmaceutical sector, the Candle Filter is a game-changer, supporting the biopharmaceutical industry with unmatched filtration capabilities. It efficiently processes fermentation broths, crystal suspensions, and mother liquors. Enhance your catalyst recovery processes with our advanced filtration technology, ensuring unparalleled purity and consistency every time.
Chemical Industry
Our Candle Filter is a cornerstone in the chemical industry, excelling at filtration and recovery of pesticide intermediates. It is adept at filtering titanium dioxide and black carbon powder from refining processes of waste plastics and tires. Optimize your production with effective filtration of biomass oil made from straw and PTA mother liquor. Whether it's refining high-purity alumina or filtering solvent oils like white oil, this filter tackles it all. It also supports polyether desalination and oil sand crude oil filtration while handling filter aids like activated carbon and clay with ease. From amine liquids to PTA and PVC powder, and inorganic salt production, our Candle Filter is your reliable partner.
Water treatment
Transform your water treatment processes with our Candle Filter, engineered to handle an array of wastewaters with precision. Whether dealing with heavy metal wastewater from electroplating, circuit boards, or galvanizing, or managing battery and magnetic material wastewater, our filter delivers unrivaled performance. It purifies electrophoresis wastewater, coal mine and stacking wastewater, and fluorine-laden wastewater efficiently. It excels in filtering suspended solids, electronic and optical lens grinding liquids, and pigment latex waste paint water. From river and groundwater to swimming pool and bath water, achieve immaculate quality and clarity in every drop.
Grease ink
Our Candle Filter is a pivotal solution for the grease ink industry, adept at dewaxing, decolorization, and fine filtration of industrial oils. It handles biodiesel, hydraulic oil, waste oil, mixed oil, base oil, diesel, kerosene, lubricating oil, and transformer oil with finesse. Extend the purity to vegetable and edible oils, ensuring supreme quality and cleanliness through every filtration cycle.

Hebei SLOT Filter Technology Co., LtdHebei SLOT Filter Technology Co., Ltd. stands as a pioneering enterprise, dedicated to the realm of industrial precision filtration and self-cleaning technology. With a rich legacy of over a decade, we excel in design and research & development, offering unparalleled expertise. Our commitment to cutting-edge filtration technology and premium product resources empowers us to deliver all-encompassing, one-stop filtration solutions to our valued customers.
SLOT proudly boasts ISO9001 quality management system certification and SGS accreditation, rigorously adhering to global standards and industry-specific regulations. Our product design and manufacturing processes are tailored to meet customized client requirements. We are unwavering in our pursuit of developing high-performance, premium quality filtration equipment and precision filtration components.
Our SLOT automatic self-cleaning filter systems are extensively employed across an array of industries such as petrochemicals, fine chemicals, energy and power, water treatment, automotive manufacturing, food and beverage, and metal processing. We have forged enduring, stable partnerships with numerous renowned industrial enterprises, both domestically and globally.
Renowned for exceptional filter performance, advanced manufacturing prowess, and professional services, SLOT has garnered widespread acclaim. When seeking superior filter system performance, unmatched quality, safety, and service, SLOT is your esteemed and reliable long-term partner.

Quality Management: We adhere to the highest standards of quality management, ensuring that every product that leaves our facility is a testament to our commitment to excellence and reliability.
FAQ: Your questions, our answers. Discover insights about our company, products, and services to help you make informed choices.
1. Who are we?
We are a dynamic force based in Hebei, China, originating in 2014. Our reach extends across the globe, with strong markets in North America (40%), Western Europe (30%), and South Asia (10%).
Africa (10%) and the Mid East (10%). Our team comprises a dedicated group of 11-50 skilled professionals who drive our success.
2. How can we guarantee quality?
Our commitment to quality is unwavering. We conduct a meticulous pre-production sampling process to ensure that every detail is perfected before mass production commences.
Each product undergoes a rigorous final inspection prior to shipment, ensuring that only the best reaches our customers.
3. What can you buy from us?
Our product range is extensive, featuring high-quality Johnson Screens, Bridge Slotted Well Screens, and Sand Control Well Screens, among others. Additionally, we offer Gravel pre-pack Screens, Pipe-based screens, Perforated Pipes, and premium API/5CT Casing and Tubing.
4. Why should you buy from us instead of other suppliers?
1. We provide comprehensive OEM & ODM support, tailored to meet your specific needs.
2. Our expert team is ready to assist you in designing custom drawings, ensuring the perfect fit for your requirements.
3. Our robust research and development group constantly innovates, driving the creation of cutting-edge products.
5. What services can we provide?
We offer a wide array of delivery terms, including FOB, CFR, CIF, EXW, FAS, and many others, to accommodate your logistical needs.
Our accepted payment currencies include USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, and CHF, ensuring financial flexibility.
We accept various payment types such as T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, and Escrow for your convenience.
Language Spoken: Our multilingual team can assist you in English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, and Italian.
Interested in becoming our local market agent? We would love to hear from you! Feel free to reach out and explore exciting partnership opportunities.