Grain drying machine

Abstract

The utility model relates to the field of grain drying, in particular to a grain drying machine. Comprising a drying bin, a fan and a resistance heating pipe; a resistance heating pipe is arranged on one side of the drying bin, a resistance heating wire is arranged in the resistance heating pipe, one side of the resistance heating pipe is communicated with a fan, the other side of the resistance heating pipe is communicated with the side wall of the drying bin, an exhaust port is formed in one side of the top of the drying bin, and a feeding port is formed in the other side of the top of the drying bin. According to the device, the material pumping pipe and the spiral conveying rod are adopted for achieving vertical overturning of materials, so that the materials can be distributed in the whole drying bin, the contact area between the materials and hot air is greatly increased, and therefore the drying efficiency is improved; and meanwhile, the annular material guide outer edge and the material guide groove further enable the transverse distribution of the materials to be more uniform, and the drying efficiency is further improved.

Description

A grain dryer Technical Field

[0001] This utility model relates to the field of grain drying, and in particular to a grain dryer. Background Technology

[0002] After harvesting, grains need to be dried. In the past, conventional drying methods often involved spreading the grains on the ground to dry them, which not only posed a risk of them getting wet but also created certain safety hazards. With the development of machinery, a large number of drying equipment has emerged. In order to improve the efficiency of drying equipment, we have designed a grain dryer. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a grain dryer, including a drying chamber, a fan, and a resistance heating tube; a resistance heating tube is provided on one side of the drying chamber, and a resistance heating wire is installed inside the resistance heating tube. One side of the resistance heating tube is connected to the fan, and the other side is connected to the side wall of the drying chamber. An exhaust port is provided on one side of the top of the drying chamber, and a feed inlet is provided on the other side; a material extraction pipe is vertically arranged in the middle of the drying chamber, and a spiral conveying rod is installed inside the material extraction pipe. The upper and lower ends of the spiral conveying rod extend out of the material extraction pipe. The upper end of the conveyor rod is equipped with a directional component that can move up and down. The main body of the directional component is a cap-shaped structure with an opening facing downwards. The size of the lower opening of the directional component is perfectly matched with that of the material extraction pipe. A downward-sloping connecting pipe is provided on one side of the directional component. A discharge pipe with the same inclination as the connecting pipe is provided on the side wall of the drying chamber on one side of the connecting pipe. The discharge pipe extends out of the drying chamber. When the directional component moves downwards to completely cover the material extraction pipe, the lower end of the connecting pipe and the upper end of the discharge pipe fit together. A motor is provided at the bottom of the drying chamber. The motor shaft extends into the drying chamber and is connected to the screw conveyor rod.

[0004] The material extraction pipe is fixed inside the drying chamber by a fixed crossbar.

[0005] The outer ring of the upper part of the feeding pipe is provided with an umbrella-shaped annular guiding edge.

[0006] The outer edge of the annular guide rail is arranged in a circular array with multiple guide grooves at different distances from the spiral conveyor rod.

[0007] A cylinder is installed at the top of the drying chamber, and the air pressure cylinder of the cylinder extends into the drying chamber and is fixedly connected to the steering component.

[0008] The beneficial effects of this utility model are as follows:

[0009] This device uses a material extraction pipe and a rotating conveyor rod to flip the material up and down, allowing the material to be distributed throughout the drying chamber, greatly increasing the contact area with hot air and thus accelerating the drying efficiency. At the same time, the annular guide eaves and guide troughs further make the lateral distribution of the material more uniform, further accelerating the drying efficiency. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 is a schematic diagram of the structure of this utility model;

[0012] Figures 2 and 3 are internal sectional views of this utility model;

[0013] Figure 4 is a schematic diagram of the use of the steering component of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] See Figure 1-4.

[0016] The heating element and fan of this device are existing technologies and are not the innovations of this case, so they will not be described in detail here.

[0017] This utility model discloses a grain dryer, including a drying chamber 1, a fan 2, and a resistance heating tube 3; a resistance heating tube is provided on one side of the drying chamber, and a resistance heating wire is installed inside the resistance heating tube. One side of the resistance heating tube is connected to the fan, and the other side is connected to the side wall of the drying chamber. An exhaust port 4 is provided on one side of the top of the drying chamber, and a feed inlet 5 is provided on the other side; a material extraction pipe 6 is vertically arranged in the middle of the drying chamber, and a spiral conveying rod 7 is installed inside the material extraction pipe. The upper and lower ends of the spiral conveying rod extend out of the material extraction pipe, and the upper end of the spiral conveying rod is provided with a... The rotating component 8 moves up and down. The main body of the rotating component is a cover-shaped structure with an opening facing downwards. The size of the opening at the bottom of the rotating component is perfectly matched with that of the material extraction pipe. A downwardly inclined connecting pipe 9 is provided on one side of the rotating component. A discharge pipe 10 with the same inclination as the connecting pipe is provided on the side wall of the drying chamber on one side of the connecting pipe. One side of the discharge pipe extends out of the drying chamber. When the rotating component moves downwards to completely cover the material extraction pipe, the lower end of the connecting pipe and the upper end of the discharge pipe fit together. A motor 11 is provided at the bottom of the drying chamber. The shaft of the motor extends into the drying chamber and is connected to the screw conveyor.

[0018] The material extraction pipe is fixed inside the drying chamber by a fixed crossbar 12.

[0019] The outer ring of the upper part of the material extraction pipe is provided with an umbrella-shaped annular guide eave 13.

[0020] The outer edge of the annular guide rail is arranged in a circular array with multiple guide grooves 14 at different distances from the spiral conveyor rod.

[0021] A cylinder is installed on the top of the drying chamber 1, and the air pressure cylinder of the cylinder 15 extends into the drying chamber 1 and is fixedly connected to the steering component 8.

[0022] Specific implementation

[0023] First, the material is fed into the upper feed port 5. The blower 2 and the resistance heating tube 3 are started to blow hot air into the drying chamber 1. The water vapor generated during drying is discharged from the exhaust port 4. The material at the bottom is continuously conveyed upward through the suction pipe 6 and the screw conveyor 7. The material is dispersed by the annular guide eaves 13 and further dispersed by the guide trough 14 to increase the contact area with the hot air and thus speed up the drying efficiency as much as possible. After drying is completed, the cylinder 15 is started to drive the steering component 8 to cover the suction pipe 6 (as shown in Figure 4). Under the guidance of the screw conveyor 7 and the connecting pipe 9, the material is discharged from the discharge pipe 10.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A grain dryer, characterized in that: The system includes a drying chamber (1), a fan (2), and a resistance heating tube (3). A resistance heating tube is installed on one side of the drying chamber, containing a resistance heating wire. One side of the resistance heating tube is connected to the fan, and the other side is connected to the side wall of the drying chamber. An exhaust port (4) is installed on one side of the top of the drying chamber, and a feed inlet (5) is installed on the other side. A material extraction pipe (6) is vertically installed in the middle of the drying chamber, containing a spiral conveyor rod (7). The upper and lower ends of the spiral conveyor rod extend out of the material extraction pipe, and the upper end of the spiral conveyor rod is equipped with a vertically movable... The steering component (8) has a downward-opening cap-like structure. The size of the opening at the bottom of the steering component is perfectly matched with that of the material extraction pipe. A downward-sloping connecting pipe (9) is provided on one side of the steering component. A discharge pipe (10) with the same inclination as the connecting pipe is provided on the side wall of the drying chamber on one side of the connecting pipe. The discharge pipe extends out of the drying chamber on one side. When the steering component moves downward to completely cover the material extraction pipe, the lower end of the connecting pipe and the upper end of the discharge pipe fit together. A motor (11) is provided at the bottom of the drying chamber. The shaft of the motor extends into the drying chamber and is connected to the screw conveyor.

2. A grain dryer according to claim 1, characterized in that: The material extraction pipe is fixed inside the drying chamber by a fixed crossbar (12).

3. A grain dryer according to claim 1, characterized in that: The outer ring of the upper part of the feeding pipe is provided with an umbrella-shaped annular guiding eave (13).

4. A grain dryer according to claim 3, characterized in that: The outer edge of the annular guide is provided with a circular array of multiple guide grooves (14) at different distances from the spiral conveyor rod.

5. A grain dryer according to claim 1, characterized in that: A cylinder (15) is provided on the top of the drying chamber (1), and the air pressure cylinder of the cylinder extends into the drying chamber (1) and is fixedly connected to the steering component (8).

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