Equipment Brief Introduction

The DLG90 single‑screw food blank main machine is mainly applied to the processing and production of various twice‑extruded foods and three‑dimensional extruded foods. It can process multiple raw materials including starch, wheat flour and whole potato flour. The finished products processed by the equipment feature neat shape, fine taste and reliable quality. The complete machine adopts scientific and reasonable structural design with stable output, controllable energy consumption, high automation level, simple operation and convenient maintenance.

Working Capacity: 60～80 kg/hScrew Diameter: 90 mmMain‑drive Motor: 22 kWFeeding Motor: 0.6 kWRotary‑cutting Motor: 0.308 kWTotal Heating Power: 12 kWOverall Dimension: 3200×880×1900 mm

Extrusion‑drying Production LineExtrusion‑frying Production LineSecondary‑extruded Food Production Line2D/3D Three‑dimensional Extruded Food Production Line

The DLG90 single‑screw food‑blank extruder is mainly composed of frame, drive system, automatic feeding system, extrusion system, thrust system, heating system, cooling system, forming system, rotary‑cutting system, shaft‑removing device and electrical control system.

1. Frame

The frame is welded from ****0 channel steel and steel plates. Rollers and fixed feet are fitted at the bottom for convenient transportation and on‑site installation of the equipment.

2. Drive System

The drive system consists of Y‑series motor matched with reducer adopting chain‑drive structure. The motor and reducer are connected by sprocket coupling, featuring high transmission efficiency, low operating noise, excellent heat dissipation and long service life.

3. Automatic Feeding System

The automatic feeding system adopts screw material conveying with stepless speed regulation for feeding‑rate adjustment. A stirring mechanism is installed inside the hopper to effectively prevent material bridging and caking. This system can stably control the feeding pressure of the main machine and ensure continuous and stable production capacity.

4. Extrusion System

The extrusion system takes screw and barrel as core components. The screw is designed with reasonable compression ratio to realize gradual and uniform compression during material processing. Longitudinal grooves are arranged on the inner wall of the barrel to increase friction with materials and improve material conveying performance.

5. Thrust System

The thrust system is composed of thrust box, thrust bearing and thrust shaft sleeve. It transmits torque from the drive system to the screw and bears the axial thrust generated during screw operation, which directly affects the performance and service life of the main machine. Equipped with special thrust‑bearing assembly, the equipment delivers high load‑bearing capacity, stable transmission, low noise, convenient maintenance and outstanding durability.

6. Heating System

Infrared heating rings are used for direct heating of the barrel, and automatic temperature control is realized via thermocouple feedback signals. Six independent heating zones are arranged on the whole machine with individually settable temperatures to meet process temperature‑control requirements at different material‑processing stages.

7. Cooling System

To satisfy production demands for precise material temperature control, the equipment is equipped with a fully‑automatic cooling system to ensure accurate and controllable processing temperature. Composed of cooling tower, water pump, pipelines, solenoid valves and water jacket, the cooling system supports both water and oil as cooling media. Five independent cooling zones are configured. Solenoid valves automatically control medium circulation. When solenoid valves open, the water pump delivers cooling medium from the cooling tower to water jackets, meanwhile hot medium inside water jackets flows back to the cooling tower for cooling. The system automatically shuts down once the temperature reaches the set value to realize constant‑temperature control.

8. Forming System

The forming system includes die body, die, pressure‑boost sleeve and snap ring. With compact overall structure and easy disassembly‑assembly, it effectively saves working hours and reduces material loss.

9. Rotary‑cutting System

The rotary‑cutting system is fitted with spring‑type floating cutter with adjustable cutting speed. An air‑duct structure is reserved at the center of the cutter shaft for high‑pressure air input to restrain cutter‑body temperature rise, avoid material adhesion and guarantee stable cutting quality.

10. Shaft‑removing Device

The shaft‑removing device consists of jacking screw, nut, shaft puller and shaft‑support trolley. Screw installation is completed by the cooperation of shaft‑support trolley and shaft puller; screw disassembly is realized by jacking screw, nut and shaft‑support trolley for labor‑saving and convenient operation.

11. Control System

The equipment adopts centralized control by an independent electric‑control cabinet integrating functional modules such as main‑machine start‑up, automatic temperature control, feeding adjustment and rotary‑cutting adjustment. It features high automation level and simple and convenient operation.