YuanChang ZKG Series Vacuum Filler: Vane Pump Technology for Precision Filling

Originally published in 2021; updated in August 2026.

Precision Filling in Meat Processing

In meat processing, filling is where precision, speed, and product quality converge. Errors at this stage can affect downstream clipping, sealing, forming, and other processes. The YuanChang ZKG Series Vacuum Filler is designed around one core principle: achieving gram-level portioning accuracy at industrial production rates while maintaining stable, reliable operation day after day.

This article examines the core technologies of the ZKG Series—from its rotary vane pump and dual-servo architecture to its optional IoT-enabled control system—and explains why it is well suited to demanding industrial meat-processing applications.

Vane Pump Core: High Pressure, Gram-Level Accuracy

Unlike conventional piston or screw-type fillers, the ZKG Series uses a rotary vane pump as its core filling mechanism. This design is based on the established principles of European-style engineering. As the rotor turns, the vanes slide within the rotor slots to form continuously changing chambers, providing smooth positive-displacement conveying and stable filling performance.

Combined with the vane pump's high output pressure and an auxiliary screw-feed system, this design provides several practical advantages:

· High-viscosity fillings — Smooth conveying of high-viscosity fillings, helping to reduce blockage and bridging.

· Large-particle fillings — Efficient handling of fillings containing larger meat particles while helping to preserve product structure.

· Gram-level accuracy — Stable control of portion weight helps minimize underfilling and overfilling.

These capabilities address three common challenges in industrial filling: material blockage, inconsistent product flow, and portion-weight deviation. The rotary vane design also allows the filling volume to be adjusted over a wide range, enabling one machine to handle different product specifications without mechanical changeover.

Independent Dual-Servo Drive: Synchronized Filling and Linking

ZKG models equipped with a linker feature an independent dual-servo motor system, which is a key part of the series' control architecture:

· Filling servo — Precisely controls the vane pump speed and angular position for accurate and repeatable product displacement.

· Linking servo — Independently controls the linker speed and twist count, maintaining precise synchronization with filling speed.

This architecture enables stepless adjustment of filling speed, linking speed, twist count, and portion weight. Maximum linking speed can reach 1,000 pieces per minute, depending on product specifications, supporting high-volume production in industrial meat-processing plants.

Smart Control and IoT Connectivity

The ZKG Series is equipped with a high-resolution touchscreen and high-performance controller. Operators can store and recall multiple recipes covering filling length, twist count, and machine speed, allowing quick changeover between product types.

The interface supports three languages:

· Chinese, English, and Russian, selectable without restarting the machine; other languages can be customized.

· An intuitive interface helps reduce operator training time and the risk of operating errors.

An optional IoT module enables real-time monitoring of machine operating status, intelligent fault alerts, and production-efficiency data analysis. Remote maintenance and troubleshooting can help technical teams diagnose and resolve issues without always requiring an on-site engineer—an important advantage for overseas customers.

Designed for Hygiene, Durability, and Maintainability

Vacuum System and Ingress Protection

The intelligent ingress-protection system automatically controls the opening and closing of the vacuum-line slide valve. Combined with a vacuum isolation chamber, the system helps prevent even thin, high-moisture fillings from entering the vacuum pump, helping extend vacuum-system service life and reduce maintenance frequency.

Food-Grade Stainless Steel Construction

The machine frame and external panels are made of 304 stainless steel for corrosion resistance and easy cleaning. The equipment is manufactured in accordance with hygienic design requirements for food-processing machinery.

Precision-Manufactured Wear Components

Key components—including the pump body, impeller, vanes, and cam—are manufactured from martensitic stainless steel suitable for food-contact applications and precision-machined on CNC machining centers. The vanes and impeller undergo dedicated heat treatment and surface-hardening processes to maintain portioning accuracy under continuous, high-load production conditions.

180° Tilting Hopper and Modular Design

The hopper can be tilted through 180°, providing access to the interior and minimizing cleaning dead zones, which helps shorten cleaning time. Wear parts such as the linker are designed as modules for fast replacement without complex tools. Core components are compatible with commonly used imported equipment, supporting timely spare-parts supply.

Vacuum Filling: Why It Matters to Product Quality

Vacuum filling is more than a filling method. By reducing entrained air in the product, it can contribute to product quality and consistency in several ways:

· Reduced oxidation — Minimizes air exposure and helps reduce oxidation-related quality deterioration in meat fillings.

· Reduced air entrainment — Helps remove air from the filling, reducing oxidation risk and improving product structure and cut-surface quality.

· Color and flavor — Helps support a more uniform appearance and consistent product characteristics.

· Dense texture — Removing entrained air helps produce a denser, smoother cut surface and supports shape retention during slicing.

These factors can influence product quality, shelf presentation, and processing consistency, all of which matter in retail meat-product production.

Model Range: Matching Different Production Scales

All models can achieve a vacuum level of -0.085 MPa. A linker and automatic lifter for standard 200 L meat trolleys are standard on core models. The system can also be integrated with fixed-length portioning machines, automatic hanging systems, clipping and sealing machines, and extrusion-forming systems to build an automated filling line.

A Technology Timeline: From 1986 to IoT

The predecessor of Hebei YuanChang Food Machinery was established in 1986 and was among the earlier companies in China engaged in the manufacture of filling equipment. Over the decades, continuous technical development and product iteration have shaped the company's technology roadmap:

· Late 1990s — YuanChang's predecessor began exploring the application of microcomputer-based control and servo-drive technology to portioning and filling equipment, laying a foundation for subsequent developments in automation, portioning accuracy, and operating speed.

· 2000s — YuanChang introduced and absorbed rotary vane vacuum-filling technology and further integrated high-precision servo control systems, continuously improving filling-volume flexibility, portioning accuracy, and machine operating stability.

Today, the ZKG Series represents decades of accumulated engineering experience and continuous product development. Its key technical parameters and equipment performance are developed with reference to comparable European equipment, while its Chinese manufacturing base provides globally competitive equipment costs, customization capabilities, and localized service support.

Total Value: From Equipment Performance to Operating Cost

The ZKG-6500 offers a maximum direct-filling capacity of up to 6,500 kg/h and a portioning speed of 300–800 portions per minute. Under applicable products and operating conditions, portioning accuracy can reach ±1–2 g. For continuous, high-volume meat production, these capabilities can translate into practical productivity benefits:

· Throughput — High processing capacity per unit of time can help shorten production cycles.

· Operating cost — Higher production efficiency can help reduce overall production cost per unit of output.

· Material utilization — More consistent portion control can help reduce raw-material losses caused by portion-weight deviations.

· Durability — Targeted material selection and processing of key wear components can help extend service life.

For meat-processing companies evaluating alternatives to imported equipment, the ZKG Series references comparable European equipment in key technical parameters and equipment performance, while leveraging China's manufacturing base to provide a competitive overall solution in equipment cost, spare-parts supply, and technical support.

One-Stop Service: Beyond the Sale

YuanChang's service model is built around a simple principle: the sale is the starting point, not the end.

Our full-service support covers:

· Installation and commissioning — Professional technical teams can provide on-site installation and commissioning, with parameters configured according to production-line layout, product type, and production requirements.

· Maintenance support — Long-term technical support and after-sales service are provided for supplied equipment, including maintenance assistance, troubleshooting, and operating optimization.

· Remote support — Remote technical support and equipment-status diagnostics help overseas customers identify problems quickly and minimize equipment downtime.

Related Equipment

· Vacuum Sausage Filler — www.ycmeatmachine.com/Vacuum-Filler-Series-Yuanchang-Vacuum-Filler.html

· Bowl Cutter — www.ycmeatmachine.com/yuanchang-Vacuum-Bowl-Cutter.html

· High-Speed Sausage Linking Line — www.ycmeatmachine.com/High-speed-sausage-Linking-Production.html

· Multi-Lane Forming System — www.ycmeatmachine.com/Multi-Lane-Forming-System.html

About YuanChang

The predecessor of Hebei YuanChang Food Machinery Technology Co., Ltd. was established in 1986. The company manufactures meat-processing equipment including bowl cutters, meat grinders, vacuum fillers, high-speed sausage linkers, and forming machines. Its equipment portfolio includes CE- and EAC-certified products, and the company has more than 20 years of international cooperation experience. Every machine is designed around one principle: stable, reliable operation day after day at full production speed. Learn more at ycmeatmachine.com.