Electronic Insulation Materials
Vacuum Powder Feeding System
A sealed negative-pressure conveying and dosing system for clean, automated transfer of powder to downstream process equipment.
Core process capabilities
Production applications
Equipment and process details
Final parameters and system boundaries are confirmed against materials, process targets, capacity and site conditions.
A negative-pressure airflow generated by a Roots blower draws material in through the feeding inlet. Inside the vacuum loader, a gas–solid separator separates the material from the air. Clean air passes through the filter element and is discharged to the atmosphere via the Roots blower. The separated material falls into the buffer hopper below. When the feeding weight reaches the preset value, the air make-up valve opens and the discharge screw conveyor starts running, conveying the material to the designated equipment. A pulse back-blow air bag automatically cleans the filter element to ensure high efficiency in the next cycle. Auxiliary discharge devices such as vibration are activated to assist unloading. After discharge is completed, the system returns to the suction (feeding) mode.
Key Highlights
- Uses various automatic components for a high level of automation.
- Vacuum negative-pressure conveying, with flexible conveying modes and convenient operation.
- Precision filter bag ensures no leakage/spillage and no contamination during conveying.
- Discharge unit uses a VFD-controlled screw conveyor for adjustable and controllable discharge rate.
- Multiple air vibrators/oscillators are installed to prevent material build-up and bridging.
- Parameters such as suction time, discharge time, and back-blow cycles can be freely set.
- Automatic stop when full; automatic start when material is low.
- PLC fully automatic control with a proprietary suction-control algorithm—stable, efficient, and energy-saving.
- Operates under vacuum to avoid cross-contamination between material, the environment, and operators.
- Strong conveying capacity, low energy consumption, high stability, small footprint, and wide application range.
Equipment Overview
- Powder hopper/silo volume can be customized according to the required dosing capacity.
- The blower can be selected based on the required conveying rate (airflow) to meet customer targets.
- A suitable system layout can be configured according to the customer’s onsite arrangement and process needs.
Applicable Fillers
Silica Micropowder | Antimony Trioxide | Zinc Oxide |
|---|---|---|
Aluminum Oxide (Alumina) | Magnesium Oxide | Boron Oxide |
Titanium Dioxide | Calcium Oxide | Silicon Carbide |
Silicon Nitride | Beryllium Oxide | Barium Oxide |
Parameter List
Blower Power (kW) | Discharger Power (kW) | Air Pressure Requirement (MPa) | Conveying Capacity (kg/h) |
|---|---|---|---|
4 | 1.1 | 0.4–0.6 | 50–500 |
4 | 1.1 | 0.4–0.6 | 300–1000 |
7.5 | 1.1 | 0.4–0.6 | 750–1500 |
11 | 2.2 | 0.4–0.6 | 1000–2500 |
15 | 2.2 | 0.4–0.6 | 2000–3000 |
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