In recent years, with the rapid development of industrial and agricultural production, the demand for drying equipment has become larger and larger, the structure and performance of the dryer have been significantly improved, the quality has been continuously improved, and the overall level of drying equipment has been continuously improved. The progress is mainly manifested in the following aspects: the control system is equipped, the automatic and semi-automatic control systems are widely used, the labor intensity is reduced, the product quality is stable; the application of computer technology, most of the large-scale systems use computer technology to collect system parameters, Processing and control to optimize the operating conditions of the system; user-friendly design, taking into account the operator’s habits and convenience during maintenance; safe design, safety alarm and danger elimination function in the system, especially The drying of flammable and explosive materials should take this into consideration; the ancillary equipment, the auxiliary equipment in the system also tends to be reasonable, and the matching relationship between heating, feeding, gas-solid separation, product packaging equipment and the main machine is optimized.
In the feed unit of the actual application, not only the processing amount is relatively limited, but also the energy consumption is large. In order to solve this problem, our company has initiated the research and development of the two-stream high-mixing technology. Under the premise of stable feeding, the company realizes a large amount of processing and avoids the phenomenon of winding the shaft and reduces the power and energy consumption of the equipment.
Development of dual-stream high-mixing technology:
1. The feeding technology of double-flow high-level material mixing has been developed, which makes the sludge and other materials greatly improve the drying efficiency in the drying process;
2. A plurality of feeding ports are uniformly distributed on the upper part of the device, uniformly feeding, and the viscous sludge is directly added to the base material having a lower water content; that is, the wet material is uniformly added to each drying unit layer in the axial direction by the upper cloth distributing mechanism. The structurally hot powdery dry material is rapidly mixed with the hot dry material in the casing under the stirring action of the hot shaft blade;
3. Reduce the spindle torque, sludge and other viscous materials run more smoothly in the drying process, and the structure is more compact than the traditional dryer, and the auxiliary device is less, the heat loss is also reduced, so that the motor can save 30% than the traditional dryer consumption. Energy saving requirements;
4. The wet material is mixed with the hot dry material to make the high temperature dry material particles coated with a layer of wet material, increase the heat exchange area, accelerate the heat transfer of the wet material, thereby increasing the material drying rate; The state of the material in the body is always in a flowing state, so that the state of the material in the drying device is always in a mixed state, avoiding the work of the material in the high viscosity water interval in the casing, and avoiding the winding of the wet material;
5. Ensure that the wet material is uniformly added to the drying equipment along the axial direction. At the same time, by adjusting the feeding speed to control the dry material and the wet material to maintain a certain mixing ratio, the system can be prevented from working due to the occurrence of the winding of the device;
6. New technology of double-flow high-mixing material improves the heat and mass transfer in the drying process and accelerates the drying rate. For the viscous characteristics of sludge, the high-mixing technology department can effectively avoid the phenomenon of sludge-winding. The traditional feeding technology is equipment. One end feeds and the other end discharges, and the high level mixing technology adopts a plurality of feed ports uniformly distributed over the entire equipment, uniformly feeding, and adding the viscous sludge directly to the lower water base. After mixing, it can effectively avoid the contact of the viscous sludge directly with the blade shaft of the equipment, thereby avoiding the occurrence of the entanglement of the shaft;
7. When the wet material is a water-containing powder material and a paste-like material, the cloth mechanism adopts a spiral feeding method, so that the wet material is evenly added on the dry material in the rectangular shell, and the two hollow structures of each drying unit layer structure are rotated. The vane shaft is heated by steam or heat transfer oil to heat and dry the wet material in the shell to evaporate the material. At the same time, the hollow vane shaft stirs and heats the mixed material through the blades on the hollow vane. Heat transfer between the heat transfer surfaces of the blades;
8. When the wet material is liquid material, the cloth mechanism adopts the sports car feeding mode to drive the feeding nozzle through the sports car that reciprocates axially along the rotary axis, and the liquid material conveyed from the conveying pipe is evenly added to the dry material in the rectangular casing. The two hollow vane shafts of each drying unit layer structure are ventilated with steam or heat transfer oil.
The material in the casing is heated and dried by heat conduction to evaporate the material; at the same time, the hollow blade shaft stirs and heats the mixed state through the blades thereon, so that the material continuously exchanges heat with the heat transfer surface of the blade. Through the upgrade of these technical aspects, the problem of small processing capacity and large energy consumption in the feeding process of the equipment is effectively solved. If you need more questions about the paddle dryer, please feel free to leave us a message on the website and we will respond positively.
