Product Introduction
The SLFB series fully enclosed belt conveyor is a new type of belt conveyor. Its idlers feature a split bearing structure with one flat and two inclined rollers, representing our company’s newly developed fourth-generation fully enclosed belt conveyor. It overcomes the shortcomings of traditional double-cone dumbbell idlers (inconsistent linear speed) and traditional three-iron idler rollers (poor sealing due to internal bearings). It boasts advantages such as compact structure, stable operation, low energy consumption, long conveying distance, convenient maintenance, and multi-point feeding. The conveyor operates in a closed environment, and the tail section employs a closed self-cleaning return device. It is widely used in ports, docks, silos, and other applications requiring large tonnage and long distances for horizontal or inclined material conveying.
As a well‑known Chinese grain machinery brand, Shengli Grain and Oil Machinery Group has long‑term provided professional supporting equipment for numerous grain‑and‑oil enterprises and peer manufacturers. It has earned high industry reputation and market recognition by virtue of reliable product quality and dependable supporting services. Our fully‑enclosed belt conveyors are produced following refined and high‑standard manufacturing principles. Every procedure including raw‑material treatment, core‑part processing, fitting selection, surface coating and complete‑machine assembly is strictly controlled to fully guarantee the stability, durability and sanitation of equipment. The complete manufacturing processes are shown below:
1. Pre-treatment of Raw Materials
All steel plates and section‑bars for the Chain conveyors go through professional pickling and phosphating inside dedicated tanks. Pickling removes scale, rust, grease and contaminants thoroughly, while phosphating forms a compact protective film to enhance paint adhesion and anti‑corrosion performance, avoiding rusting and paint‑peeling in later‑stage operation. After phosphating, work‑pieces are high‑pressure‑rinsed with purified water to wash away residual acid liquor and phosphating residues, preventing chemical leftovers from spoiling subsequent coating quality. The materials are then fully dried for follow‑up baking‑paint treatment.
2. High-grade Food-Grade Surface Coating
Work‑pieces cleaned with high‑pressure purified water and fully dried are delivered to an automatic electrophoresis food‑grade electrostatic baking‑paint room for coating. The automatic electrophoresis process achieves evenly permeated paint with strong adhesion without dead‑angles or sagging. Combined with food‑grade electrostatic baking paint, the formed paint film is dense, smooth, corrosion‑resistant, wear‑proof and pollution‑free, complying with clean‑production requirements of grain‑oil, food, chemical and other industries. Meanwhile it improves overall appearance and service life of equipment and satisfies dust‑free and hygienic material‑transport demands across multiple industries.
3. Selection and Self-developed Machining of Core Components
Top brand parts are adopted for core transmission components to ensure overall performance. Key accessories are selected from fixed standard brands:
- Drive motors from SIEMENS and Wannan: powerful output, stable running, low energy consumption and low failure rate for long‑time continuous operation;
- Reducers from SEW or Tongli: high transmission precision, large torque and steady deceleration, lowering operating noise for smooth conveying.
- SKF bearings: excellent wearresistance and hightemperature tolerance with strong loadbearing capacity, cutting abrasion of transmission parts and later maintenance costs.
Besides, high‑precision transmission shafts and customized transmission fittings are self‑processed by our company. Relying on precision CNC processing equipment, we perform turning, grinding and calibration strictly according to high‑precision industrial standards, precisely controlling coaxiality, flatness and fitting accuracy of shaft components to prevent transmission jamming and eccentric shaking. Our self‑made core parts outperform general‑industry standards to ensure better matching of transmission systems and stable operation as well as high working efficiency and durability of complete machines.
4. Final Assembly, Inspection and Factory Release
After surface coating and core‑part machining, professional technicians assemble whole machines following standardized assembly procedures and fit transmission components, housings and sealing parts precisely while strictly controlling assembly gaps and installation accuracy. After assembly, no‑load testing, loaded commissioning, tightness inspection and stability tests are carried out to eliminate hidden faults. Equipment can only be delivered to clients after passing all performance indexes without jamming, leakage and abnormal noise.
Photos of finished products or application sites
Galvanized Sheet Belt Conveyor(Optional)
Technical parameter
| Model | SLFB550 | SLFB650 | SLFB800 | SLFB1000 | SLFB1200 |
| Wheat(t/h) | 100 | 200 | 350 | 800 | 1000 |
| Belt width(mm) | 550 | 650 | 800 | 1000 | 1200 |
Note : models can be based on different different production , matching different models bucket.
