Introduction of advantages of bottom spray coating machine launched by pengduo drying

The key components of the bottom spray mode are composed of a movable bed (raw material container) and a spouted bed The bottom jet flow distribution plate at the bottom of the container distributes the air flow between the inner and outer cylinders Most of the air flow flows upward through the spouted bed with animal materials to the diffusion drying chamber Due to the sudden increase of the space, the air flow rate also decreases The particles return to the raw material container Under the action of the air flow, the particles form a fluidization state in the raw material container At the same time, the air flow between the spouted bed and the moving bed The pressure difference caused by the velocity difference leads the particles at the bottom of the moving bed into the spouted bed As the materials in the lower part of the moving bed continuously enter the spouted bed and flow upward, the materials in the upper part of the moving bed slowly fall down to form a circulating flow state The bottom spray gun is located at the bottom of the spouted bed at the bottom of the bottom jet distribution plate (due to the same direction as the air flow, so it is also called co flow spray) The fluidized pellets, pellets or tablets are coated materials in the spouted bed When the particles move up and down in the diffusion drying chamber and the moving bed moves downward, the excess water added to the liquid has evaporated The bottom spray coating overcomes the disordered movement of particles, pellets or tablets during the top spray coating operation, as well as the phenomenon of discontinuous coating caused by the instantaneous drying of liquid in the process of spraying to the material during the top spray coating, which leads to large loss of coating material, affects the coating effect and the stability of product quality.