QVC-2 Pneumatic Vacuum Feeder

 

 

The QVC-2 pneumatic vacuum feeder is our flagship medium-capacity automatic powder conveying machine, designed for standardized medium-volume production lines with stable daily output requirements. Upgraded on the basis of the entry-level QVC-1 model, this unit expands hopper volume, increases single-cycle material storage capacity, and upgrades filtration and backflush systems to support continuous long-hour non-stop operation, covering the mainstream throughput demand of most food, chemical, and plastic processing factories. Different from the slim horizontal layout of QVC-1, QVC-2 adopts vertical conical hopper architecture, optimizing material self-flow performance and reducing residual material accumulation inside the silo, which is especially suitable for medium-fine powder with weak fluidity and slight agglomeration tendency.

The whole machine maintains full 304 stainless steel material contact structure, and adds R-angle arc transition design at all internal silo corners to eliminate dead zones where materials stick. The vertical layout centralizes all pneumatic and control components on the top of the equipment, separating the electrical area completely from the powder flow zone to enhance operation safety. The 220V single-phase power supply design retains the advantage of convenient on-site wiring, without requiring three-phase industrial power transformation, lowering on-site installation engineering costs for clients.

 

 

Parameter Item	Specific Data
Model	QVC-2
Rated Power Supply	220V single-phase, 50/60Hz
Standard Conveying Capacity	350–700 kg/h
Standard Silo Volume	4.1 L
Working Compressed Air Pressure	0.6–0.8 Mpa
Overall Hopper Dimension	Φ213 × 790 mm
Standard Suction Pipeline	5 m Φ38 PVC steel wire reinforced hose

Test benchmark: Conveying capacity data tested with flour, vertical lifting height 3 m, horizontal conveying distance 2 m, for reference only. Actual throughput will decrease when conveying high-density viscous powder or extending conveying pipelines.

 

1. Enhanced Filtration & Automatic Backflush System

Upgraded to 4 pieces of Φ60×200 large-size stainless steel filter elements, with larger filtration area than QVC-1, greatly improving powder interception efficiency for high-throughput continuous feeding. The backflush system is upgraded with QEA-15 quick exhaust valve and matched Φ89 L200 backflush air bag. The air bag stores stable high-pressure compressed air, generating instantaneous strong airflow during reverse blowing to thoroughly shake off thick powder cake attached on filter surfaces, effectively preventing filter blockage during all-day continuous production and maintaining consistent conveying efficiency without frequent shutdown cleaning.

2. High-Stability Pneumatic Unloading Assembly

Consistent mature CRB2BW30-90SZ blade oscillating swing cylinder for discharge drive, matched with self-made reinforced sealed discharge gate. The vertical conical silo makes materials slide down to the discharge port by gravity, reducing the load of the swing cylinder and extending the service life of pneumatic actuators. The discharge gate adopts double-layer silicone sealing to isolate vacuum negative pressure stably during the suction stage, avoiding suction attenuation caused by air leakage and guaranteeing stable hourly throughput even under long-hour continuous running conditions.

3. Vertical Stainless Steel Storage Silo

Custom vertical conical 304 stainless steel hopper with multi-section flange quick-clamp structure. The upper cylindrical silo stores sucked materials, and the lower tapered section guides smooth material discharge without retention. All internal welds are fully polished to mirror finish, suitable for frequent material switching production lines that require complete cleaning between batches. Four Φ7 mounting holes are reserved at the bottom base for fixed installation above mixers, extruders, and packaging machines, preventing equipment vibration displacement during operation.

4. Independent Intelligent Control Box

Self-developed industrial dedicated control circuit board, equipped with Taiwan Mean Well certified switching power supply and full set of Chint electrical components with overvoltage and short-circuit protection functions. The top-mounted control panel integrates visual operation buttons and running indicator lights, allowing operators to adjust feeding cycle parameters directly without bending over. The electrical box is isolated from the main silo body, avoiding fine powder infiltration into circuits to cause short-circuit faults.

1. Vertical conical anti-residue design: Compared with horizontal small models, the tapered bottom eliminates material dead zones, cutting material waste and cross-contamination risks during formula switching, critical for food and pharmaceutical batch production.

2. Large-area filter + air bag assisted backflush: Solves the core pain point of filter clogging during medium-volume continuous feeding, greatly reducing production line downtime for manual filter cleaning.

3. Balanced throughput & space occupation: 350–700 kg/h capacity covers over 70% of medium-sized factory production line demands, while vertical layout occupies smaller horizontal floor space than horizontal large-volume feeders.

4. Wide material compatibility: Optimized pipeline diameter (Φ38) adapts to fine powder, medium particles, and slightly agglomerated powder materials, compatible with more raw material types than QVC-1's small Φ25 suction hose

 

 

 

Mainly targeted at medium-volume food production (wheat flour, starch, spice powder), daily chemical washing powder, plastic masterbatch pellet conveying, pharmaceutical bulk drug auxiliary material batching, and medium-speed automatic packaging lines. We provide wooden case export packaging as standard; customized services including extended suction hoses, anti-static filter elements, and explosion-proof electrical systems are available after technical confirmation with our sales engineers. All equipment supports seamless docking with mixers, granulators, tablet presses, and automatic weighing packaging machines.

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