Multi-stage grain drying device

Abstract

The utility model provides a multi-stage grain drying device. Belongs to the field of grain processing. According to the technical key points, the device comprises a drying mechanism, the drying mechanism comprises a drying box, extension plates are symmetrically and fixedly connected to the two sides of the drying box, stand columns are symmetrically and fixedly connected to the bottoms of the two extension plates, and discharging pipes communicating with each other are fixedly connected to the bottom of the drying box; a plurality of man-shaped flow guide plates are evenly and fixedly connected into the drying box, every two up-down adjacent man-shaped flow guide plates are arranged in a staggered mode, heat exchange pipes are fixed to the interiors of all rows of man-shaped flow guide plates in a penetrating mode, and all the heat exchange pipes penetrate through the drying box. The two ends of each heat exchange pipe are fixedly connected with a flow guide pipe and a backflow pipe which communicate with each other correspondingly, and one side of the drying box is fixedly connected with an air heater. The utility model aims to provide a multi-stage grain drying device. The heat waste of the whole drying device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of grain processing, specifically a multi-stage grain drying device. Background Technology

[0002] The main reasons for grain drying include ensuring grain quality and reducing losses. Specifically: Ensuring grain quality: The drying process removes excess moisture from the grain, reducing the risk of mold and bacterial growth, thus ensuring grain quality and safety. Dried grain has a uniform moisture content, making it safer to store and preventing problems such as overheating, sprouting, and mold. Reducing losses: Drying reduces losses caused by moisture and mold after harvest, ensuring a good harvest. Dried grain is easier to store and transport, extends its shelf life, and reduces the risk of rot and spoilage.

[0003] Current multi-stage grain drying devices, such as those described in patent CN222231214U, include a housing. Inside the housing is a main mesh belt conveyor, which includes a receiving section, a lifting section, and a feeding section. An installation groove is formed on the outer surface of the housing above the receiving section. A feeding hopper is located at the upper end of the installation groove, and multiple distribution hoppers are located at the bottom of the feeding hopper. A material spreading plate is located inside the housing on one side of the distribution hoppers. Multiple branch mesh belt conveyors are spaced apart inside the housing below the main mesh belt conveyor. The branch mesh belt conveyor closest to the main mesh belt conveyor moves in the opposite direction to the main mesh belt conveyor, and adjacent branch mesh belt conveyors move in opposite directions.

[0004] Regarding the aforementioned technologies, the inventors believe that high-temperature airflow is introduced into the chamber through hot air ducts to dry grains. However, during the drying process, the hot airflow used for drying is directly discharged, resulting in a large amount of heat in the airflow that cannot be effectively utilized, thus wasting heat. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage grain drying device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-stage grain drying device, including

[0008] A drying mechanism includes a drying chamber. Extending plates are symmetrically fixedly connected to both sides of the drying chamber. Columns are symmetrically fixedly connected to the bottom of each set of extending plates. A connected discharge pipe is fixedly connected to the bottom of the drying chamber. Multiple rows of human-shaped guide plates are uniformly fixedly connected inside the drying chamber. Two adjacent human-shaped guide plates are staggered. A heat exchange tube is fixedly inserted through the interior of each row of human-shaped guide plates. Each set of heat exchange tubes penetrates the drying chamber. A connected guide pipe and a return pipe are fixedly connected to both ends of each set of heat exchange tubes. A hot air blower is fixedly connected to one side of the drying chamber. The return pipe is fixedly connected to the input end of the hot air blower, and the guide pipe is fixedly connected to the output end of the hot air blower.

[0009] The conveying mechanism includes support plates that are uniformly and fixedly connected to the side of the drying chamber away from the hot air blower. Each set of support plates has a conveying pipe that is fixedly connected through it. A drive motor is fixedly connected to the top of the conveying pipe. A spiral conveying blade adapted to the conveying pipe is fixedly connected to the output end of the drive motor. A feeding pipe corresponding to the top of the drying chamber is fixedly connected to one side of the conveying pipe.

[0010] As a further embodiment of this utility model: multiple fins are uniformly fixedly connected to the outer side of each group of heat exchange tubes.

[0011] As a further embodiment of this utility model: the top of each of the two sets of extension plates is symmetrically and fixedly connected with a connecting rod, and the end of each set of connecting rods away from the extension plate is fixedly connected to the outside of the drying oven.

[0012] As a further embodiment of this utility model: each set of support plates is symmetrically and fixedly connected to the top of a reinforcing rib plate, and each set of reinforcing rib plates is fixedly connected to the outer wall of the drying oven.

[0013] As a further embodiment of this utility model: a rotating plate is rotatably connected to the outside of the conveying pipe, a hopper is fixedly connected to the bottom of the rotating plate, and the conveying pipe extends into the interior of the hopper.

[0014] As a further embodiment of this utility model: a toothed ring coaxially arranged with the conveying pipe is fixedly connected to the top of the rotating plate, a stepper motor is fixedly connected to one side of the drying box, and a gear meshing with the toothed ring is fixedly connected to the output end of the stepper motor.

[0015] As a further embodiment of this utility model: support columns are fixedly connected to the four corners of the bottom of the hopper, and casters are fixedly connected to the bottom of each set of support columns.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] With the above-described structure, this invention, through the cooperation of heat exchange tubes, human-shaped guide plates, return pipes, and hot air blowers, allows the grain discharged into the drying chamber to gradually fall through the guidance of the human-shaped guide plates. When the hot air blower starts working, it heats the air drawn in from the return pipes and then discharges it into the guide pipes, which in turn guide it into the heat exchange tubes, thus heating the air inside the drying chamber and heating and drying the grain as it falls through the chamber. The hot air flowing through the heat exchange tubes flows back into the return pipes and is then drawn into the hot air blower for heating again, thus achieving air circulation. This effectively utilizes the heat in the air discharged from the heat exchange tubes and reduces the heat waste of the entire drying device. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0019] Figure 1 This is a partial structural cross-sectional view of a multi-stage grain drying device.

[0020] Figure 2 A multi-stage grain drying device Figure 1 A schematic diagram of the structure of part A.

[0021] Figure 3 A multi-stage grain drying device Figure 1 A schematic diagram of the structure of part B.

[0022] Figure 4 This is a schematic diagram of a multi-stage grain drying device.

[0023] In the diagram: 1. Drying mechanism; 101. Drying box; 102. Discharge pipe; 103. Human-shaped guide plate; 104. Heat exchange tube; 105. Fin; 106. Guide pipe; 107. Return pipe; 108. Hot air blower; 109. Extension plate; 110. Column; 111. Connecting rod; 2. Conveying mechanism; 201. Conveying pipe; 202. Drive motor; 203. Feeding pipe; 204. Support plate; 205. Reinforcing rib plate; 206. Spiral conveyor blade; 207. Rotating plate; 208. Hopper; 209. Support column; 210. Caster wheel; 211. Gear ring; 212. Stepper motor; 213. Gear. Detailed Implementation

[0024] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0025] Please see Figure 1-4A multi-stage grain drying device includes a drying mechanism 1, which includes a drying chamber 101 for passing grain. Extension plates 109 are symmetrically fixedly connected to both sides of the drying chamber 101. Connecting rods 111 are symmetrically fixedly connected to the top of each set of extension plates 109. The end of each connecting rod 111 away from the extension plate 109 is fixedly connected to the outer side of the drying chamber 101. The connecting rods 111 further connect and fix the extension plates 109 to the drying chamber 101, thereby improving the connection stability between the drying chamber 101 and the extension plates 109. Columns 110 are symmetrically fixedly connected to the bottom of each set of extension plates 109, providing support for the drying chamber 101 through the columns 110 and the extension plates 109.

[0026] A discharge pipe 102 is fixedly connected to the bottom of the drying chamber 101, through which the dried grain inside the drying chamber 101 can be discharged. The conveying mechanism 2 includes support plates 204 uniformly and fixedly connected to the side of the drying chamber 101 away from the hot air blower 108. A conveying pipe 201 is fixedly and continuously inserted through the interior of each support plate 204, providing support and fixation for the conveying pipe 201. Reinforcing ribs 205 are symmetrically and fixedly connected to the top of each support plate 204. Each reinforcing rib 205 is fixedly connected to the outer wall of the drying chamber 101, further connecting and fixing the support plates 204 to the drying chamber 101, thereby improving the connection stability between the support plates 204 and the drying chamber 101.

[0027] A rotating plate 207 is rotatably connected to the outer side of the conveying pipe 201. A hopper 208 is fixedly connected to the bottom of the rotating plate 207. The conveying pipe 201 extends into the hopper 208, which is used to hold the grain to be dried. A drive motor 202 is fixedly connected to the top of the conveying pipe 201. A spiral conveying blade 206 adapted to the conveying pipe 201 is fixedly connected to the output end of the drive motor 202. Driven by the drive motor 202, the spiral conveying blade 206 can rotate, so that the spiral conveying blade 206 can convey the grain inside the hopper 208 upward along the inside of the conveying pipe 201. A feeding pipe 203 corresponding to the top of the drying box 101 is fixedly connected to one side of the conveying pipe 201. The feeding pipe 203 is used to guide the grain conveyed inside the conveying pipe 201 into the interior of the human-shaped guide plate 103.

[0028] A gear ring 211, coaxial with the conveying pipe 201, is fixedly connected to the top of the rotating plate 207. A stepper motor 212 is fixedly connected to one side of the drying chamber 101. A gear 213, meshing with the gear ring 211, is fixedly connected to the output end of the stepper motor 212. When the stepper motor 212 starts working, it drives the gear 213 to rotate. The rotation of the gear 213 drives the gear ring 211, the rotating plate 207, and the hopper 208 to rotate. Support columns 209 are fixedly connected to the four corners of the bottom of the hopper 208. A caster wheel 210 is fixedly connected to the bottom of each set of support columns 209. The support columns 209 and caster wheels 210 provide auxiliary support for the hopper 208.

[0029] The interior of the drying chamber 101 is uniformly and fixedly connected with multiple rows of human-shaped guide plates 103. Two adjacent human-shaped guide plates 103 are staggered. The human-shaped guide plates 103 guide the grain falling into the drying chamber 101, allowing it to gradually descend. Each row of human-shaped guide plates 103 has a heat exchange tube 104 fixedly connected through it. Each set of heat exchange tubes 104 penetrates the drying chamber 101, allowing heated air to pass through and dry the gradually descending grain, thus achieving multi-stage drying. Multiple fins 105 are uniformly and fixedly connected to the outer side of each set of heat exchange tubes 104. The fins 105 facilitate heat exchange between the heat exchange tubes 104 and the air inside the drying chamber 101, thereby improving the efficiency of grain drying.

[0030] Multiple fins 105 are uniformly fixedly connected to the outer side of each group of heat exchange tubes 104. Each end of each group of heat exchange tubes 104 is fixedly connected to a connecting guide pipe 106 and a return pipe 107. A hot air blower 108 is fixedly connected to one side of the drying oven 101. The return pipe 107 is fixedly connected to the input end of the hot air blower 108, and the guide pipe 106 is fixedly connected to the output end of the hot air blower 108. The hot air blower 108 can draw in and heat the air inside the return pipe 107, and then discharge it into the interior of each group of heat exchange tubes 104 through the guide pipe 106, and finally return it to the interior of the return pipe 107.

[0031] In this embodiment, the hot air blower 108 is existing technology and will not be described in detail here.

[0032] In operation, the stepper motor 212 is started, which drives the gear 213 to rotate. The gear 213 rotates the gear ring 211, the rotating plate 207, and the hopper 208 until the hopper 208 is adjusted to be directly below the discharge pipe 102. The grain to be dried is then poured into the hopper 208. Next, the drive motor 202 and the hot air blower 108 are started. The drive motor 202 drives the spiral conveyor blades 206 to rotate, which in turn conveys the grain inside the hopper 208 upwards along the conveyor pipe 201. When the grain reaches the feed pipe 203, it flows through the feed pipe 203 and into the drying chamber 101. It then gradually disperses and falls through the guide plates 103. The hot air blower 108 heats the air drawn in from the return pipe 107 and then discharges it into the guide pipe. The air inside the drying chamber 101 is heated by the air flowing through the guide pipe 106 into the interior of each group of heat exchange pipes 104, thereby heating the air inside the heat exchange pipes 104 and the drying chamber 101. This heats and dries the grain that gradually falls into the drying chamber 101. The hot air flowing through the heat exchange pipes 104 flows back into the return pipe 107 and is then drawn back into the hot air blower 108 for heating, thus achieving air circulation. If the grain is not completely dried after passing through the drying chamber 101, the stepper motor 212 can be started. When the stepper motor 212 rotates, it can drive the gear ring 211, the rotating plate 207 and the hopper 208 to rotate. When the hopper 208 rotates, it can be adjusted to be below the discharge pipe 102, so that the grain discharged from the discharge pipe 102 can fall back into the hopper 208. When the spiral conveyor blades 206 rotate, they can transport the grain back into the drying chamber 101 for drying again.

[0033] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A multi-stage grain drying device, characterized in that, include A drying mechanism (1) includes a drying chamber (101). Extension plates (109) are symmetrically fixedly connected to both sides of the drying chamber (101). Columns (110) are symmetrically fixedly connected to the bottom of each of the two sets of extension plates (109). A discharge pipe (102) is fixedly connected to the bottom of the drying chamber (101). Multiple rows of human-shaped guide plates (103) are uniformly fixedly connected inside the drying chamber (101). Two adjacent human-shaped guide plates (103) are staggered. Each row of human-shaped guide plates... Heat exchange tubes (104) are fixedly installed inside the plate (103). Each group of heat exchange tubes (104) passes through the drying box (101). Each end of each group of heat exchange tubes (104) is fixedly connected to a connecting guide pipe (106) and a return pipe (107). A hot air blower (108) is fixedly connected to one side of the drying box (101). The return pipe (107) is fixedly connected to the input end of the hot air blower (108), and the guide pipe (106) is fixedly connected to the output end of the hot air blower (108). The conveying mechanism (2) includes a support plate (204) uniformly and fixedly connected to the side of the drying box (101) away from the hot air blower (108). Each set of support plates (204) has a conveying pipe (201) fixedly connected inside. The top of the conveying pipe (201) is fixedly connected to a drive motor (202). The output end of the drive motor (202) is fixedly connected to a spiral conveying blade (206) adapted to the conveying pipe (201). A feeding pipe (203) corresponding to the top of the drying box (101) is fixedly connected to one side of the conveying pipe (201).

2. The multi-stage grain drying device according to claim 1, characterized in that, Each heat exchange tube (104) in each group has multiple fins (105) uniformly fixedly connected to its outer side.

3. The multi-stage grain drying device according to claim 1, characterized in that, The tops of the two sets of extension plates (109) are symmetrically fixedly connected with connecting rods (111), and the end of each set of connecting rods (111) away from the extension plate (109) is fixedly connected to the outside of the drying box (101).

4. The multi-stage grain drying device according to claim 1, characterized in that, Each set of support plates (204) has a symmetrically fixed top of a reinforcing rib plate (205), and each set of reinforcing rib plates (205) is fixedly connected to the outer wall of the drying oven (101).

5. A multi-stage grain drying device according to claim 1, characterized in that, A rotating plate (207) is rotatably connected to the outside of the conveying pipe (201), and a hopper (208) is fixedly connected to the bottom of the rotating plate (207). The conveying pipe (201) extends into the interior of the hopper (208).

6. A multi-stage grain drying device according to claim 5, characterized in that, The top of the rotating plate (207) is fixedly connected to a toothed ring (211) coaxially arranged with the conveying pipe (201), and a stepper motor (212) is fixedly connected to one side of the drying box (101). The output end of the stepper motor (212) is fixedly connected to a gear (213) meshing with the toothed ring (211).

7. A multi-stage grain drying device according to claim 6, characterized in that, The bottom of the hopper (208) is fixedly connected to four corners of a support column (209), and the bottom of each set of support columns (209) is fixedly connected to a caster wheel (210).

Images