1. Product Overview

The Vacuum Feeding Machine (also known as Vacuum Conveyor, Dust-Free Vacuum Feeder) is a fully enclosed, dust-free pipeline conveying equipment for the automated, pollution-free transfer of powder, granular, and flaky materials. It completely solves the industry pain points of traditional feeding methods (manual feeding, screw conveying, bucket elevator), such as dust leakage, material loss, cross-contamination, high labor costs, and potential safety hazards.

This equipment can transfer materials directly from source containers (silos, bags, ton bags, reactors) to target equipment (mixers, tablet presses, packaging machines, reactors, storage silos) in a fully enclosed process without leakage. It can be customized for explosion-proof, GMP-compliant, food-grade, high-temperature, corrosion-resistant, and other special working conditions, and is widely used in pharmaceutical, food, chemical, lithium battery, building materials, metallurgy, feed and other industries.

2. Core Working Principle

The Vacuum Feeding Machine realizes material conveying based on the vacuum negative pressure difference principle. The core working process is divided into 4 stages, which can realize automatic cycle operation through the PLC control system:

1. Vacuum Generation Stage: After the equipment is started, the vacuum pump/vacuum generator quickly extracts air from the conveying pipeline and hopper, forming a high vacuum negative pressure environment in the closed system, and generating a significant pressure difference between the feed inlet and the conveying system.

2. Material Suction Stage: Driven by the negative pressure difference, the source material is entrained by the high-speed air flow and quickly sucked into the vacuum hopper of the equipment through the closed conveying pipeline. The whole process has no dust overflow and no contact between the material and the outside environment.

3. Gas-Solid Separation Stage: After the material enters the vacuum hopper, the material and the conveying air flow are completely separated through the built-in high-precision filter element/cyclone separator of the equipment. The clean air is discharged by the vacuum pump after being filtered by the filter element, and the material is trapped in the hopper, avoiding the loss of fine powder material and the wear of the vacuum pump.

4. Material Discharging Stage: When the material in the hopper reaches the set level, the control system automatically closes the vacuum valve, opens the air release valve to break the system vacuum, and opens the pneumatic/electric discharge valve at the bottom of the hopper. The material falls directly into the target equipment/storage hopper under the action of gravity. After the discharging is completed, the valve automatically resets and the equipment enters the next conveying cycle.

3. Core Performance Features

1. Fully Enclosed & Dust-Free, Zero Cross-ContaminationThe entire conveying process is completed in a closed pipeline without dust leakage and no contact between the material and the external environment, completely eliminating dust pollution in the production workshop. It meets GMP, FDA, and food safety production specifications, and can meet the ultra-high cleanliness requirements of pharmaceutical, food, new energy and other industries.

2. High Conveying Efficiency, Ultra-Low Material LossRelying on vacuum negative pressure high-speed conveying, the conveying capacity can cover 0.1-30t/h, adapting to different production capacity requirements. The high-precision filter element can achieve 99.99% fine powder interception rate, no material flying loss, especially suitable for conveying high-value powder and ultra-fine powder materials.

3. High Degree of Automation, Unmanned OperationStandard equipped with PLC intelligent control system, which can realize automatic material level detection, automatic start/stop of conveying cycle, automatic fault alarm, remote monitoring and other functions. It can be directly connected to the workshop DCS system without manual supervision, greatly reducing labor costs and improving the level of production automation.

4. Strong Adaptability, Customizable for Multi-Working ConditionsIt can adapt to various material forms such as powder, granule, flake, and paste, and support pipeline layout in horizontal, vertical, inclined and other directions, which can flexibly adapt to the existing equipment layout of the workshop. It can be customized into explosion-proof, food-grade, high-temperature, corrosion-resistant, anti-static and other special models to meet the safety and process requirements of special industries such as chemical industry, lithium battery, metallurgy, etc.

5. Simple Structure, Low Maintenance Cost, Long Service LifeThe core components of the equipment are only vacuum pump, filter element, valve and control system, without complex mechanical transmission structure, few wearing parts and extremely low failure rate. The filter element can be repeatedly cleaned and regenerated with low replacement cost, and the overall service life of the equipment can reach more than 10 years, greatly reducing the later operation and maintenance costs.

6. Safe & Environmentally Friendly, Compliant with National Safety StandardsNo high-speed operation risk of mechanical transmission parts, and the explosion-proof model can meet the conveying safety requirements of flammable and explosive materials. No dust overflow, no need for additional supporting dust removal equipment, greatly reducing the workshop environmental protection treatment cost, and complying with the relevant national occupational health and safety production standards.

4. Technical Parameters

(Standard models, customizable according to actual working conditions)

5. Applicable Materials & Application Scenarios

5.1 Applicable Materials

• Powder materials: Flour, starch, milk powder, coffee powder, seasoning powder, pharmaceutical API, intermediates, pesticide powder, talc, calcium carbonate, graphite powder, lithium battery cathode/anode materials, pigments, dyes, etc.

• Granular materials: Plastic granules, rubber granules, feed pellets, grains, seeds, small granular chemical raw materials, food granules, etc.

• Special materials: Flammable and explosive powder, corrosive materials, high temperature materials, hygroscopic materials, high-value ultra-fine powder, etc. (corresponding models need to be customized)

5.2 Core Application Industries & Scenarios

• Pharmaceutical Industry: Dust-free conveying of API, intermediates, traditional Chinese medicine powder, preparation powder, compliant with GMP specifications, suitable for matching with tablet presses, mixers, granulators, packaging machines and other equipment.

• Food Industry: Automated conveying of flour, starch, milk powder, seasoning powder, food additives, with food-grade 304/316L stainless steel material, no cross-contamination.

• Chemical Industry: Closed conveying of chemical raw materials, pigments, dyes, auxiliaries, pesticide powder, explosion-proof and corrosion-resistant models can be customized, suitable for matching with reactors, mixers, packaging machines.

• Lithium Battery New Energy Industry: Dust-free conveying of ultra-fine powder such as cathode/anode materials, conductive agents, binders, eliminating metal impurity pollution, suitable for the whole process of battery material production.

• Building Materials/Metallurgy Industry: Automated conveying of talc, calcium carbonate, quartz sand, metal powder, refractory materials, suitable for large-capacity and continuous production requirements.

• Feed/Agriculture Industry: Closed conveying of feed raw materials, additives, grains, seeds, no dust pollution, suitable for automated production lines of feed mills and grain and oil processing plants.

6. Installation & Daily Maintenance

6.1 Core Installation Requirements

1. The equipment must be installed horizontally and fixed to ensure the hopper is vertical, to avoid material residue and poor discharging caused by inclination.

2. The conveying pipeline should minimize elbows and tees, and prefer large curvature radius elbows to reduce conveying resistance and avoid material blockage.

3. The vacuum pump/vacuum generator should be installed in a well-ventilated place, away from flammable, explosive and corrosive gas environments, to ensure clean air intake.

4. The electrical wiring must comply with the national electrical safety specifications. For explosion-proof models, explosion-proof cables and explosion-proof joints must be used, with reliable grounding.

5. After installation, an air tightness test must be carried out to ensure no leakage in the pipeline, valves and hopper, and the vacuum degree can reach the set value.

6.2 Core Daily Maintenance Points

1. Filter Element Maintenance: Regularly check the use status of the filter element, clean/back-blow the filter element regularly according to the material characteristics, to avoid the decrease of conveying efficiency and insufficient vacuum degree caused by filter element blockage. For ultra-fine powder materials, it is recommended to back-blow once per shift and clean once a week.

2. Valve Maintenance: Regularly check whether the action of the pneumatic/electric valve is smooth and whether the seal is aging, replace the aging seal in time, to avoid insufficient vacuum degree and material residue caused by valve leakage.

3. Vacuum Pump Maintenance: Regularly check the oil level and oil temperature of the vacuum pump, replace the vacuum pump oil in time, clean the air intake filter, to avoid vacuum pump wear and insufficient vacuum degree.

4. Control System Maintenance: Regularly check the status of PLC, sensors and wiring terminals to ensure normal signal transmission and effective fault alarm function, to avoid the failure of automatic operation.

5. Pipeline Maintenance: Regularly check the wear and blockage of the conveying pipeline, clean the material residue in the pipeline in time, to avoid pipeline blockage and decreased conveying efficiency.

7. Customization Options

We can provide a full-process customized solution according to your actual working conditions and process requirements. The core optional configurations include:

1. Material customization: Food-grade 304/316L stainless steel, carbon steel lined with PTFE, Hastelloy and other corrosion-resistant materials.

2. Explosion-proof customization: Whole machine explosion-proof type, suitable for conveying flammable and explosive materials, compliant with national explosion-proof standards.

3. Cleanliness customization: GMP-grade mirror polishing, aseptic design, Clean-in-Place (CIP), Sterilize-in-Place (SIP) system.

4. Control system customization: Touch screen HMI, PLC intelligent control, remote DCS connection, fault early warning system.

5. Special working condition customization: High-temperature type, low-temperature type, anti-static type, multi-stage supercharging long-distance conveying type, mobile type.

6. Supporting system customization: Ton bag unloading station, manual feeding station, silo, vibrating screen, mixer and other supporting equipment, providing a complete material conveying solution.