| 摘要 |
FIELD: heating, drying. ^ SUBSTANCE: invention relates to disperse materials drying technology and may be used in microbiological, food, chemical and other industries. The dryer for solutions and pulps consists of a body, where pneumatic injector for dried solution or pulp supply is located. The solution or pulp is sprayed under furnace gases effect. The material granules being produced in the course of drying process are supplied to gas-distributing lattice and dried completely in the boiling bed created by coolant supplied to the lower part of the body under the lattice. The coolant at the temperature to 200°C is supplied to the lower part of the body under the lattice and though the part of the body, which is separated from the tapered part with gas-distributing lattice by means of the cup with perforated bottom. The coolant is removed through the perforations of cylindrical cup and supplied to entrapping system consisting of an acoustic plant, cyclone and sleeve filter. The pneumatic injector is made acoustic and contains housing with ultrasonic vibrator being installed inside. The ultrasonic vibrator is represented with the nozzle and annular resonant cavity. Beside, the body is implemented as the vertical cylindrical bushing. There is a pipe for air supply on the top of the pipe and a pipe for solution supply perpendicular to the pervious pipe axis. In addition, the bushing with top and bottom flanges is rigidly fixed inside the body and in axial alignment to it. The bottom flange is rigidly fixed in the groove made in the body. The annular resonant cavity is located inside the bushing and in axial alignment to it. It is represented with a cup with tapered surface. The cup is molded on the rod with resonant cavity d diameter. The fixing discs are available in the tail part of the resonant cavity. The discs are implemented in the shape of leaves interacting with the internal surface of the bushing. At least, one nozzle is available on the bottom flange at 20°/40° angle to resonant cavity axis. In addition, the nozzle axis continuation coincides with the circle being in the middle part of tapered surface. Coaxial conic and cylindrical holes are made on the internal surface of the bushing. ^ EFFECT: increased drying efficiency. ^ 3 cl, 2 dwg |
