I. Zinc Chloride Liquid Dry Vacuum Dryer--Overview of Equipment

Vacuum kneading dryers are mostly used in the chemical, feed and food industries for the drying of pellets and powders. The utility model relates to a novel horizontal intermittent vacuum drying device. The wet material is evaporated by conduction, and the agitator forms a circulation flow in the dryer, and the water is evaporated and then pumped out by the vacuum pump, thereby achieving the drying effect.

The vacuum kneading dryer comprises a drying cylinder, and the drying cylinder is provided with a stirrer. The agitator comprises a mounting shaft and a stirring rod disposed on the mounting shaft, and the stirring rod end is provided with a short rod perpendicular to the stirring rod, and the stirring is performed. The rods are placed on the mounting shaft in a staggered manner. In order to make the material better agitate and dry, the stirring rod is arranged on the mounting shaft in a spiral shape. The vacuum kneading dryer has a short rod at the end of the stirring rod, so that the material between the stirring rods can also be stirred by the short rod, the mixing range is wider, the stirring is more uniform, and the drying effect is more ideal.

2, the characteristics of the production of zinc chloride liquid vacuum dryer

2.1. The sealing part is sealed with PTFE seal for good corrosion resistance.

2.2. Both ends of the boring shaft are machined by lathe, and the precise position of the shaft head at both ends of the shaft is ensured to ensure the concentricity of the shaft.

2.3. The boring and boring piece is made by wire cutting method. After welding, it is welded with the dents. When welding, it is welded on the lathe and the concentricity of the shaft teeth is ensured.

2.4. Both ends of the shaft and the cylinder cover are sealed by PTFE seal and double-end mechanical seal. The sealing effect is good. The packing seal can effectively protect the mechanical seal and make the material difficult to enter the mechanical seal.

2.5. The direction of the guiding of the shaft teeth is to the middle to guide the flow, to ensure that the dry material is discharged completely when there is a discharge, and there is a coincidence between the molars and the molars to ensure that there is no dead angle when stirring. The caries and end caps are scraped with a scraper to reduce the chance of end caps.

2.6. The lower discharge valve of the cylinder adopts the cylinder type switch to discharge, which is convenient for discharging. The discharge valve and the cylinder are closely attached, and the curvature of the bonding surface is consistent with the curvature of the cylinder, which reduces the residual of the material when it is dry, and improves the drying effect of the material.

2.7. The cylinder is made of 25mm stainless steel 316L board and processed by car. It is made according to the requirements of pressure vessel. It conforms to national standards, and the pressure resistance and corrosion resistance can meet the requirements of users.

2.8. The inner surface of the cylinder is machined (if there is a round out), and the gap between the molars on the arm and the cylinder is controlled within 3mm.

2.9. The caries are covered with a tetrafluoroethylene plate, and the double-row waist holes are fastened to the caries on the surface of the plate, and the gap between the cylinder and the cylinder can be adjusted back and forth. The tetrafluoroethylene sheet is a carbon fiber wear-resistant type, and the wear resistance is three times that of ordinary PTFE. Tetrafluoroethylene is resistant to 260 ° C. It can effectively prevent the generation of electric sparks when the material is rubbed, and has a high degree of safety.