Negative Pressure Powder Suction Feeder
Negative Pressure Powder Suction Feeder

Negative Pressure Powder Suction Feeder

This Negative Pressure Vacuum Feeder is a fully enclosed pneumatic automatic feeding device, widely configured for dry powder and granule transportation in industrial production lines. It relies on stable negative pressure air pressure to convey raw materials through sealed pipelines, realizing automatic feeding for mixers, granulators, tablet presses, packaging machines and other downstream processing equipment.
The Negative Pressure Vacuum Feeder supports two mature vacuum power configurations to adapt to different on-site working conditions. Electric vacuum pumps suit conventional large-volume, long-distance and high-lift conveying scenarios with stable and high suction power. Pneumatic vacuum generators adopt non-electric structural design, applicable for hazardous workshops and working scenarios that need to reduce electrical equipment layout.
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Nanjing Huozao Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of negative pressure powder suction feeder in China. With abundant experience, we are committed to providing high quality equipment made in China with competitive price. Welcome to wholesale customized negative pressure powder suction feeder from our factory.

 

Main Components

 

The complete feeder system consists of vacuum power unit, stainless steel hopper, sealed conveying pipeline, filter assembly, discharge valve, pulse back-blow cleaning system and integrated control unit.


All material contact parts adopt 304 or 316L stainless steel optional configuration, with smooth polished surfaces to reduce material adhesion. The built-in filter assembly realizes effective gas-solid separation, blocking powder from entering the vacuum power system. The bottom discharge valve controls quantitative and stable material blanking to downstream equipment. The matched pulse back-blow structure cleans residual powder on the filter surface in real time, maintaining continuous and stable suction performance of the Negative Pressure Vacuum Feeder.

Vacuum feeder

 

Features

 

Full Closed Conveying Structure
The whole material feeding process is completed inside sealed pipelines and hoppers without open exposure. This structural design effectively suppresses workshop dust diffusion, reduces material residue and loss during transportation, and avoids cross-contamination caused by external impurity mixing, meeting clean production requirements.


Automatic Cyclic Operation
Material suction, gas-solid filtration, quantitative discharging and filter self-cleaning are all automatically controlled by the system. The cyclic working mode replaces repetitive manual feeding operations, stabilizes batch feeding consistency and reduces human error in production.


Dual Vacuum Power Matching
Electric vacuum pumps provide strong and lasting suction capacity for large-batch continuous production. Pneumatic vacuum generators feature simple structure and spark-free performance, adapting to special safety production environments. Users can select configurations according to actual output demands and workshop safety standards.


Simplified Maintenance Design
The overall mechanical structure is simplified without complex transmission components. Daily maintenance work is concentrated on regular filter cleaning and replacement, hopper internal washing, as well as conventional inspection of pipelines and valves. The low-maintenance design reduces daily operation and maintenance costs.

Negative Pressure Powder Suction Feeder

 

Working Principle

 

The Negative Pressure Vacuum Feeder unit extracts air inside the hopper and sealed pipelines to form stable negative pressure environment. Relying on internal and external air pressure difference, materials are stably sucked from storage containers into the vacuum hopper along the conveying pipeline.


Inside the hopper, the filter assembly separates solid materials from airflow to protect the vacuum system. After the material suction process is completed, the internal negative pressure is released, and the bottom discharge valve opens automatically. Materials fall into the matched processing equipment by gravity.


After discharging, the system triggers compressed air pulse back-blowing to clean dust adhered to the filter, restoring filter permeability. The discharge valve closes after cleaning, and the equipment automatically starts the next complete feeding cycle.

 

Performance Specifications

 

The pneumatic vacuum feeder features a very clear set of technical parameters; its conveying capacity is directly related to its air consumption, as shown in the table below:

Model

Conveyance capacity (kg/h)

Air consumption (L/min)

Supply air pressure (MPA)

QVC-1

50-200

180

0.4-0.6

QVC-2

50-300

360

0.4-0.6

QVC-3

100-600

720

0.4-0.6

QVC-4

500-1000

1440

0.4-0.6

QVC-5

600-2000

2880

0.4-0.6

 

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