**Double-Layer Glass Reactor for Chemical Reactions** A double-layer glass reactor is a widely used piece of equipment in modern fine chemical, pharmaceutical, and research laboratories. It is designed to perform various experiments under different conditions, such as constant speed, constant force, and temperature control. This versatile device is ideal for tasks like concentration, distillation, retention, separation, and purification reactions. It is commonly used in teaching, experimental research, pilot testing, and industrial production. **Key Features:** - **Electronic Speed Control:** The motor allows for smooth and stepless speed adjustment, ensuring safe and long-lasting operation. For units 30L and above, imported frequency converters are used. - **High-Efficiency Condenser:** Ensures efficient solvent recovery during the process. - **High-Quality Glass Components:** Made from GG17 borosilicate glass, which offers excellent thermal and chemical resistance. - **Quick Discharge Valve:** Enables fast recovery of solvents after use. - **Imported Electrical Components:** High-quality, reliable parts ensure stable performance. - **Corrosion-Resistant Design:** The structure uses high-quality stainless steel, aluminum alloy, and synthetic materials that resist corrosion and damage from various solvents. - **Standardized Connections:** Easy to assemble and disassemble for maintenance and cleaning. - **Vacuum Gauge:** Allows precise control of vacuum levels, especially when working with low-boiling-point substances. - **PTFE and Rubber Seals:** Provide excellent sealing performance and resistance to various solvents, maintaining a strong vacuum. **Installation Steps:** 1. After unpacking, check the packing list to ensure all main components are present. 2. Assemble the stainless steel tubes and fixing parts according to the provided drawings. 3. Mount the electrical box on the right rear pole and secure it with screws. Insert the seven-pin plug. Install the vacuum gauge at the back and tighten the screws. 4. Adjust the height of the kettle bracket on the pole slider and place the kettle on the bracket. Use a semicircular hoop to insert the kettle pole into the support pole, then tighten the screws to keep the reactor vertical. 5. Fix the stirring rod on the motor's main shaft chuck and pass it through the central rotating bearing of the cover. Tighten the connector and adjust the motor position for proper alignment. 6. The pole slider is a multi-purpose stainless steel clamp that allows for directional and height adjustments. 7. On the left side of the bottle cap, install a 40# standard port reflux condenser, and on the right side, connect a 40# feeding port to a constant pressure funnel. The front 24# port is for the thermometer, and the back 34# port serves as a multi-function spare port. The bottom has a discharge valve, while the lower and upper ports are for circulating fluid inlet and outlet, respectively. 8. When installing glass components, clean them thoroughly and apply Vaseline to prevent glass locking. Apply vacuum grease to avoid air leaks. 9. Secure the universal wheel to stabilize the stirrer. Ensure smooth rotation and proper alignment. **Operating Procedures:** 1. Verify that the power supply voltage matches the specifications on the nameplate. 2. Plug in the power cable, turn on the inverter, and adjust the speed using the control knob. 3. If the motor and material flow resonate, change the speed to avoid this. 4. After installing the stirring bar, manually rotate it to check for concentricity. If not aligned, loosen the clamp, adjust, and gradually increase the speed. 5. Adjust the stirring leaves up and down as needed, typically by 5 cm. 6. If the seal performance decreases, inspect the rotating bearing inside the agitator sleeve. 7. The glass components are made from GG17 borosilicate glass. Always confirm the material before use to ensure safety. 8. The outer layer of the glass kettle can be heated with hot oil or cooled with a coolant. Steam heating should not exceed 0.5–1 K (avoid pressurized steam). 9. During low-temperature operations, the discharge valve may frost. Thaw it partially before use to prevent cracking. 10. If particles are present in the solution, they may affect the PTFE piston’s airtightness. Clean the valve thoroughly after each use. **Maintenance Tips:** 1. Inspect the equipment before use. Check for any damaged glass or mismatched interfaces and handle it carefully. 2. Handle the equipment gently. If damaged within warranty, repair costs will apply. 3. Avoid over-tightening PTFE switches, as this may damage the glass. 4. Start the machine slowly, increasing speed gradually. Turn it off and disconnect the power when finished. 5. Loosen connections regularly to prevent long-term tightening that could cause jamming. 6. After each use, wipe the surface with a soft cloth to remove oil, stains, and residual solvents. 7. Clean the seal ring periodically by removing it, wiping the shaft, applying vacuum grease, and reassembling. 8. After stopping the machine, loosen the PTFE switches to prevent deformation of the piston. 9. Keep electrical components dry. Do not expose them to water. 10. Use only original accessories. Unauthorized parts may cause serious damage. 11. Always cut off the power and water supply before performing any repairs or inspections. 12. Return the equipment to the manufacturer for annual maintenance (recommended every three years). 13. Wipe all interfaces with a soft cloth and apply a small amount of vacuum grease. Store the grease properly to prevent contamination. **Common Troubleshooting:** | Problem | Possible Cause | Solution | |--------|----------------|----------| | Power indicator does not light | Poor power connection or blown fuse | Check power supply or replace fuse | | Power on but no rotation | Shaft rust, motor failure, or disconnected 7-pin plug | Contact supplier or reconnect the plug | | Vacuum suddenly disappears | Cracked glass or faulty switch | Check glass and replace switch | | No vacuum despite presence | Worn seal or leaky connection | Replace seal or check connections | | Intermittent vacuum | Loose connector or aging vacuum hose | Clean vacuum gauge or replace hose | | Main shaft wobbles | Loose screw | Tighten the screw | | Motor overheating | Overload or dirty contact area | Stop, check rotation, clean and apply grease | | Speed display mismatch | Voltage fluctuation | Contact supplier | | Enclosure charged | Water in heating pipe | Have a professional electrician check | **Equipment Specifications (50L, 30L, 20L Double-Layer Glass Reactor):** - Left side: 40# standard port - Right side: 40# standard oblique port - Back: 34# standard spare port - Front: 24# thermometer port - Middle: 50# flat flange stirrer - Bottom: 50# flat flange discharge (note: slight variations may occur; use original parts for compatibility) This guide provides a comprehensive overview of the double-layer glass reactor, covering its features, installation, operation, maintenance, and troubleshooting. Proper care and usage ensure optimal performance and longevity of the equipment.

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