Nanjing Huozao Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of dust-free powder feeding station in China. With abundant experience, we are committed to providing high quality equipment made in China with competitive price. Welcome to wholesale customized dust-free powder feeding station from our factory.
Working Principle
The Dust-Free Powder Feeding Station follows a complete and stable cyclic working logic of feeding, dust collection and automatic backflushing, consistent with standard dust-free feeding systems. When the hopper door is opened for material pouring, the dust removal fan starts synchronously and builds stable negative pressure inside the hopper cavity. Floating fine powder generated in the feeding process is captured by airflow and fully intercepted by high-precision filter components, completely avoiding outward dust diffusion and workshop pollution.
Once feeding operation is finished and the hopper door is closed, the system triggers automatic compressed air pulse backflushing. High-pressure air reversely impacts the filter surface to shake off adhered accumulated powder, which falls back into the hopper for reuse. This design effectively prevents filter blockage caused by long-term fine powder adhesion and sustains continuous and stable equipment operation.

Features & Configuration
Aiming at the easy-leakage and poor-flow characteristics of fine powder materials, the Dust-Free Powder Feeding Station is upgraded with targeted configurations in filtration, discharging and material adaptation. It adopts high-precision PTFE membrane filter elements and an enhanced backflushing system, which can effectively intercept ultra-fine powder, ensure clean exhaust air and completely avoid micro-powder leakage. All material-contact parts are made of 304 or 316L mirror-polished stainless steel. The smooth inner wall leaves no powder residue after feeding and cleaning, effectively preventing batch cross-contamination and meeting strict hygienic standards for pharmaceutical and food production.
To solve material bridging and unsmooth blanking of low-fluidity powder, a hopper vibrator is installed at the cone section to assist uniform material falling. A bottom vibrating screen is equipped to filter out damp agglomerations and mixed impurities, effectively protecting downstream processing equipment from blockage and damage. The equipment supports flexible functional expansion. It can be customized into anti-corrosion or explosion-proof versions according to material attributes, and seamlessly connected with mixers or vacuum feeders to build fully enclosed automatic dust-free production lines.

Technical Parameters Reference
The following are the general specifications for a WT-type powder dust-free feeding station available on the market; these can serve as a reference for model selection:
|
Parameter Item |
Reference value |
|
External dimensions (subject to actual measurements) |
1.1 × 0.8 × 2.25 m |
|
Weight of equipment,installation (unit) weight |
about 150 KG |
|
Power |
380V,1-3 KW |
|
Bleed pressure |
0.4 - 0.8 MPA |
|
Single feeding quantity |
0 - 50 KG(Standard 25 kg bag) |
|
Material quality |
304 or 316L stainless steel (contact areas with materials) |
|
Optional Features |
Vibrating screens, vibrators, explosion-proof configurations, corrosion-resistant configurations |
Connection Mode & Application Flexibility
Matching with mixers is the most common assembly form for dust-free powder feeding lines, with two mature and stable connection schemes available. Gravity direct connection fixes the feeding station discharge port directly to the mixer feed inlet through pipelines. Materials fall naturally by gravity throughout the fully closed pipeline, realizing zero-dust feeding with simple structure and stable operation. Vacuum transfer connection links the station with a vacuum feeder, realizing long-distance pipeline conveying of powder to the mixer hopper. This mode features flexible layout and adapts to scattered equipment arrangement and complex production line spaces.
Applications
This dust-free powder feeding station is widely applicable to standardized dust-free and hygienic feeding operations for various fine powders. It covers pharmaceutical, food processing, fine chemical and new material industries. The equipment can adjust internal filtration parameters, anti-bridging structures and safety configurations according to actual powder traits, realizing customized feeding solutions for different production line demands.
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