Spiral Conveyor, Food Cooling Tower, Quick-Freezing Tower

A spiral tower conveyor is a conveying device that operates in a spiral pattern in the vertical direction. It is primarily used to continuously lift materials or perform process treatments such as cooling and freezing within a limited floor space.

🏗️ Manufacturing Process

The core manufacturing process of a spiral tower can be divided into two major parts: the tower structure and the conveying system:

1. Tower Structure Manufacturing

· Modular Assembly: Utilizes a modular assembly of standardized components such as positioning columns, support tubes, fasteners, and support legs. The positioning columns are formed by vertically connecting multiple positioning plates, facilitating transportation and on-site assembly, and allowing for height extension
· Frame Welding: Traditional methods involve welding frames from square tubes or structural profiles, which offer high strength but result in significant weight

2. Core Processes of the Conveying System

· Forced Drive Technology: A drive head is installed on the inner side of the mesh chain, meshing with the drive vertical rod on the turret column to achieve forced drive along the spiral path. The drive tower typically adopts a skirted design (gradually tapering outward from the bottom) to facilitate smooth entry and exit of the mesh chain
· Guidance and Engagement Control: Guide blocks are installed at the inlet, comprising a cylindrical section, an extension section, and an entry section. These ensure smooth engagement between the mesh chain drive head and the drive rod, eliminating slack and preventing excessive tension on the outer side
· Helical Support Structure: The bottom of each layer of the mesh chain is supported by helical ring tracks, which are fixed to radial support rods and evenly distributed along the column

✨ Product Advantages

· Space-saving: The tower-style structure occupies only one-third of the floor space of traditional linear elevators, maximizing the use of vertical space
· High conveying efficiency: The continuous spiral design ensures smooth material flow, with conveying efficiency reaching over 95%
· High-Temperature Resistance and Hygiene: Extensively utilizes 304/316L stainless steel with mirror-polished finish (Ra ≤ 0.8 μm), supports CIP (Clean-in-Place) cleaning, complies with food-grade hygiene standards, and has an average service life of over 8 years
· Smooth Operation: Optimized drive and guidance design effectively eliminates meshing gaps, prevents tension on the outer side of the mesh chain, and ensures a loose and stable state when carrying materials
· Optional intelligent features: Can be equipped with PLC control systems, speed sensors, and more to enable speed adjustment, data monitoring, and integration with automated production lines

📦 Product Applications

· Food Baking and Cooling: Used for natural or forced-air cooling of baked goods such as bread and cookies after removal from the oven, providing sufficient cooling time
· Freezing and Quick-Freezing: Used for spiral-conveyor freezing of quick-frozen foods (e.g., dumplings, seafood) in low-temperature environments
· Logistics and Warehousing: Used for vertical transport of items such as express packages and cardboard boxes between floors; supports multi-entry and multi-exit designs to flexibly adapt to warehouse layouts
· Buffering and Accumulation: Functions as a dynamic buffer tower to temporarily store materials during back-end equipment failures, ensuring continuous production line operation and preventing downtime losses
· Pharmaceuticals and Chemicals: Used for clean conveyance and inter-floor transfer of pharmaceuticals and chemical raw materials

The core parameters and structural details of the spiral tower conveyor determine the equipment’s conveying capacity and operational stability. Below are the detailed specifications:

📏 Core Performance Parameters

· Conveying Capacity: Standard models typically range from 5 to 200 m³/h, depending on material characteristics and model type.
· Lifting Height: Modular design allows for heights ranging from 3 to 50 meters, with support for segmented assembly.
· Operating Temperature: High-temperature models can convey materials up to 150°C (e.g., baked goods).
· Operating Speed: The belt line speed is typically adjustable within the range of 0.5–30 m/min.
· Noise Level: After optimization, operating noise is typically ≤65 dB.

🔧 Structural Details and Dimensions

· Tower Structure: Features a segmented modular design, with each segment typically 1–5 meters in height. Sections are connected via flanges for easy transportation and on-site assembly.
· Spiral Diameter: Refers to the outer diameter of the central turret or spiral blades; common specifications range from Φ150–600 mm.
· Drive Method: Forced-drive technology—a drive head is installed on the inner side of the mesh chain, meshing with the drive rod on the turret column to achieve smooth helical motion.
· Support System: The bottom of each mesh chain layer is supported by helical ring tracks, which are fixed to radial support rods to ensure smooth operation.
· Inlet Guidance Mechanism: Equipped with guide blocks comprising cylindrical and extension sections to ensure smooth engagement between the mesh chain drive head and the vertical rod, eliminating any gaps.

⚙️ Material and Configuration Options

· Main Material: The tower body and parts in contact with materials are typically made of 304 or 316L stainless steel; carbon steel (Q235) is suitable for non-corrosive environments such as mining.
· Surface Finish: Food-grade applications require mirror polishing (Ra ≤ 0.8 μm) and support CIP (Clean-in-Place) cleaning.
· Motor Power: Matched to the load, ranging from 3 to 55 kW.

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