Twin screw with main and dribble feed screws driven by separate motors with cut-off gate for precise clean cut and minimum free fall. Dust tight design enclosure with inlet flange connection. Its uniq
Precision Bulk Packaging for Granular & Powdered Materials
Shanghai Guangzhi Automation’s GZ-GB Series integrates advanced screw feeding technology with gross-weight bagging automation, delivering ±0.3% filling accuracy at 25 bags/hour for minerals, chemicals, and food-grade powders. Engineered with heavy-duty carbon steel construction and PLC-controlled dosing, this system eliminates manual weighing errors while reducing labor costs by 75% in demanding industrial environments.
High-Precision Screw Feeder System
Anti-Segregation Design: Variable-pitch screw (?150–400mm) maintains product integrity for blends
Speed Control: 5–60 rpm adjustable via VFD (flow range: 0.5–3 T/h)
Gross-Weight Bagging
500kg load cells with ±0.3% accuracy
Automatic tare compensation for bag weight variations
Dust-Tight Operation
Pneumatic telescopic spout + dust collection port (ISO 8573-1 Class 2)
IP65-rated control panel for harsh environments
Semi-Auto Bag Handling
Bag placers position open-mouth sacks (25–50kg)
Foot pedal initiates filling/sealing cycle
Robust Construction
5mm carbon steel frame (1,500 kg capacity)
Abrasion-resistant screw flights (Hardox 400 coating)
| Parameter | Specification | Options |
|---|---|---|
| Bag Capacity | 25–50 kg (standard) | 10–100 kg |
| Throughput | 25 bags/hour | 40 bags/hour |
| Accuracy | ±0.3% (gross weight) | ±0.2% (premium load cells) |
| Screw Diameter | ?250 mm | ?150–400 mm |
| Material Compatibility | Granules (0.5–20mm), Powders (<500μm) | Sticky pastes (add vibrator) |
| Power Supply | 380V/50Hz, 4.5 kW + 0.7 MPa air | 220V/60Hz |
| Bag Types | Woven PP, Paper, Laminated | Valve sacks |
| Machine Dimensions | 2,800 × 1,800 × 3,200 mm | |
| Compliance | CE, ATEX (Zone 22), OIML R61 | FDA/USDA (food grade) |
Minerals & Aggregates:
Sand, gravel, cement (dust-proof design)
Chemicals:
Granular fertilizers, polymer pellets (anti-static option)
Food Processing:
Sugar, flour, powdered ingredients (sanitary 304SS version)
Animal Feed:
Pelletized feed with additive dosing
Bag Placement: Operator positions empty bag on filling spout
Clamping: Pneumatic clamps secure bag mouth (dust-tight seal)
Screw Filling: PLC-controlled screw delivers precise material volume
Weighing: Load cells monitor gross weight in real-time
Release: Auto bag drop onto take-away conveyor
| Feature | Impact |
|---|---|
| Labor Efficiency | 1 operator handles 1,250 kg/h output |
| Material Savings | Prevents overfill (saves 3–5% product) |
| Durability | 10,000+ hour MTBF in abrasive environments |
| Quick Changeover | Swap screws in <15 mins (tool-free) |
| ROI Period | 6–10 months (vs. manual bagging) |
Special Screws:
Ribbon screws for fragile crystals
Paddle screws for cohesive powders
Automation Upgrades:
Robotic bag placers
|Automatic palletizing integration
Hazardous Environments:
ATEX Zone 21/22 explosion-proofing
Nitrogen purging for oxidizable materials
Hygienic Packages:
CIP-ready with polished surfaces
APPLICABLE BARREL TYPE
COMPANY PROFILE
Shanghai Guangzhi Automation Equipment Co., Ltd. is a production and trading company specializing in the weighing industry. We are located in Shanghai, China's economic city, with convenient transportation and export ports all over the world. We cooperate with state-owned factories and international companies, and the quality is guaranteed.
We mainly focus on providing customers with weighing solutions, from commercial scales to industrial weighing machines. Such as pneumatic valve bag packaging machine, dry mix mortar bag packaging machine, cement packaging machine, natural stone powder packaging machine, flour powder packaging machine, wheat packaging machine, potato starch packaging machine, air packaging machine, granule bag packaging machine, grain packaging machine, fertilizer bag packaging machine, lubricant filling machine, 200 kg drum filling machine, 216L drum filling machine, 208L drum filling machine, ton barrel filling machine, IBC barrel filling machine, jumbo bag packaging machine, ton bag packaging machine, 30L pail filling machine, 50L pail asphalt filling machine, ATEX barrel filling machine, explosion-proof filling machine, etc.
Company Certificate
Our office and workshop
Consulting-Design-Procurement-Processing-Production-Installation-Debugging-Training-Maintenance
This is a partial 
service for us
in China.
Over 30 years of experience, every time we produce in
Shanghai, our friends can visit our factory at any time.
Brand components
We will ensure that our company's equipment has safety, stability, high efficiency and intelli-gent technology, so as to meet your needs, we can also cooperate with you in selecting in-ternational product brand production and business.
Our service
Complete solution provided
Telephone exchange joint business design plan, you can also visit our company ; we have a good environmental office vehicle,you can visit from time to time.
Duty after death
Our music team has a strong heart, and the customer's suspicions are also the purpose 24 hours of phone cell service and listing to the conversation at any time.
Technology group
We have a wealth of technical personnel and our technical team has been developing technical skills for over ten years.
Successful collaboration
Our factory in Shanghai. China provides free training for our technical staff.Better guarantee good product safety , our company provides safety, convenience, high efficlency packaging servic.
packge and delivery
Multiple Transportation way :Express(Fedex/DHL/TNT/EMS/UPS etc),air and shipping for your choose
FAQs
Our in-house designers and engineers have produced countless great designs for customers from different industries
CONTACT US
Skype: fayfaywang1027
QQ: 429682794
Whatsapp: 008618016442021
E-mail: [email protected]
https://glzon.en.alibaba.com/
cel: +0086 18016442021
