RU216716U1 - DRYER - Google Patents

Abstract

The utility model is designed for drying food, fodder and seed grains of spiked, cereal and other grain crops.

The technical result of the utility model is to reduce the metal consumption and simplify the design of the dryer.

The set technical result is achieved by the fact that the air intake pipe of the pneumatic conveyor is led into the air duct between the heating rotor and the drying shaft, and rows of rubber aprons cut into strips are located in the grain bin opposite the edge of the unloading pipe of the pneumatic conveyor.

The dryer works as follows. The grain is fed by a loading screw conveyor into the grain bin and then enters the drying shaft. The heating rotor heats the preheated drying agent coming from the heat exchanger and delivers it to the air duct. The damper drive, depending on the temperature sensor signal, regulates the amount of atmospheric air sucked in to the drying agent. Further, the drying agent heats the grain in the drying shaft, is saturated with moisture evaporated from the grain and is removed to the heat exchanger, where it gives off its heat to the atmospheric air entering there, which is used as a drying agent.

The dried grain enters the pneumatic conveyor. Part of the air flow coming from the heating rotor to the air duct is taken by the air intake pipe of the pneumatic conveyor for transporting grain to the grain bin or to the unloading cyclone. When drying in the recirculation mode, the grain transported by the air flow in the grain bin at the outlet of the pneumatic conveyor falls on the rows of rubber aprons cut into strips, slows down and settles into the drying shaft.

Description

The utility model is intended for drying food, feed and seed grains of spiked, cereal and other grain crops.

A dryer is known (Utility model patent RU No. 196966, Russian Federation, F26B 17/12; F26B 21/04 / Dryer / A.I. Kupreenko, T.V. Panova, M.V. Panov, 23.03.20, Bull. No. 9), containing a drying shaft, a grain bin with a loading screw conveyor and an unloading cyclone, a pneumatic conveyor, a heating rotor, a heat exchanger.

The disadvantage of this dryer is the inability to regulate and control the heating temperature of the drying agent.

The closest to the claimed solution is a dryer (Utility model patent RU No. 207177, Russian Federation, F26B 9/06 / Dryer / A.I. Kupreenko, T.V. Panova, M.V. Panov, 10.15.21, Bull. No. 29), containing a drying shaft, a grain bin with a loading screw conveyor and an unloading cyclone, a pneumatic conveyor, a heating rotor, a heat exchanger, dampers with a drive, a temperature sensor.

The disadvantage of this dryer is the complexity of its design.

The technical result of the utility model is to reduce the metal consumption and simplify the design of the dryer.

The set technical result is achieved by the fact that the air intake pipe of the pneumatic conveyor is led into the air duct between the heating rotor and the drying shaft, and rows of rubber aprons cut into strips are located in the grain bin opposite the edge of the unloading pipe of the pneumatic conveyor.

Thus, the proposed technical solution meets the criterion of "significant differences" and ensures the achievement of a positive effect, indicated by the purpose of the utility model.

In FIG. 1 shows a diagram of the movement of grain in the dryer, Fig. 2 is a diagram of the movement of the drying agent in the dryer, in Fig. 3 - section of the grain bin with a view of the rubber aprons.

The dryer contains a drying shaft 1, a grain bin 2 with a loading screw conveyor 3 and an unloading cyclone 4, a pneumatic conveyor 5, a heating rotor 6, a heat exchanger 7, dampers 8 with a drive, a temperature sensor 9.

The air intake pipe 11 of the pneumatic conveyor 5 is led into the air duct 10 between the heating rotor 6 and the drying shaft 1, and rows of rubber aprons 13 cut into strips 14 are located in the grain bin 2 opposite the edge of the discharge pipe 12 of the pneumatic conveyor 5.

The dryer works as follows. The grain is fed by the loading screw conveyor 3 into the grain bin 2 and then enters the drying shaft 1. The heating rotor 6 heats the preheated drying agent coming from the heat exchanger 7 and delivers it to the air duct 10. The damper drive 8, depending on the signal from the temperature sensor 9 regulates the amount of atmospheric air sucked in to the drying agent. Next, the drying agent heats the grain in the drying shaft 1, is saturated with moisture evaporated from the grain and is removed to the heat exchanger 7, where it gives off its heat to the atmospheric air entering there, which is used as a drying agent.

The dried grain enters the pneumatic conveyor 5. Part of the air flow coming from the heating rotor 6 to the air duct 10 is taken by the air intake pipe 11 of the pneumatic conveyor 5 to transport the grain to the grain bin 2 or to the unloading cyclone 4. When drying in the recirculation mode, the grain transported by the air flow in the grain bin at the outlet of the pneumatic conveyor, it hits the rows of rubber aprons 13, cut into strips 14, slows down and settles into the drying shaft 1.

Information sources:

1. Utility model patent RU No. 196966, Russian Federation, F26B 17/12; F26B 21/04 / Dryer / A.I. Kupreenko, T.V. Panova, M.V. Panov, 03/23/20, Bull. No. 9.

2. Utility model patent RU No. 207177, Russian Federation, F26B 9/06 / Dryer / A.I. Kupreenko, T.V. Panova, M.V. Panov, 10/15/21, Bull. No. 29.

Claims (1)

A dryer containing a drying shaft, a grain bin with a loading screw conveyor and an unloading cyclone, a pneumatic conveyor, a heating rotor, a heat exchanger, dampers with a drive, a temperature sensor, characterized in that an air intake pipe of the pneumatic conveyor is led into the air duct between the heating rotor and the drying shaft, and In the grain bin, opposite the edge of the unloading pipe of the pneumoconveyor, there are rows of rubber aprons cut into strips.

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