A continuous bean powder drying device

Abstract

The utility model discloses a kind of bean powder continuous drying device, the tunnel drying furnace inner cavity of the device places two rows of bean powder drying tray stacked up and down. Tunnel drying furnace includes pedestal, lower layer circulating air blower is fixed in the top of pedestal, its upper surface is fixed upper layer circulating air blower, and the interfixation connecting tray conveyor, the front end of pedestal is connected feed inlet, rear end is connected cooling fan, and the upper surface of pedestal has the machine cover of cover inside component. Bean powder drying tray is stacked up and down by multiple square trays, square tray right side has flow guide groove, inner cavity has serpentine drying pipe, its upper and lower surface inlay hot air release pipe, fan-shaped silica gel piece has in hot air release pipe top portion port, square tray has strip-shaped handle before and after, bottom has protruding strip. The device generates hot air by upper and lower layer circulating air blower, enters serpentine drying pipe through flow guide groove, is released by hot air release pipe again, realizes the continuous drying of bean powder.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel oven equipment, specifically to a continuous soybean flour drying device. Background Technology

[0002] In soybean flour production, soybeans are wet-milled to form a paste, which needs to be dried to obtain soybean flour. Currently, common drying methods include natural air drying and drying in a dryer. Natural air drying takes a considerable amount of time, has low production efficiency, and is greatly affected by weather and other natural conditions. Existing dryers typically place the paste-like soybean flour on a screen and blow hot air upwards from below the screen. However, because the paste-like soybean flour is highly viscous, it easily clogs the screen mesh (hot air inlet). Once clogged, production must be stopped for unblocking, severely impacting production efficiency and increasing production costs and labor input. Furthermore, existing soybean flour drying equipment has certain shortcomings in terms of drying uniformity and hot air utilization. Some equipment cannot guarantee uniform heating of the soybean flour during the drying process, resulting in some soybean flour being over-dried while others are under-dried, affecting the quality of the soybean flour. Moreover, some drying equipment has an unreasonable hot air circulation design, resulting in inefficient use of hot air and energy waste. Therefore, developing a continuous soybean flour drying device that can efficiently and evenly dry soybean flour and avoid screen clogging is of great practical significance. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a continuous soybean flour drying device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a tunnel drying oven, in which two rows of stacked soybean flour drying trays are placed inside the tunnel drying oven.

[0005] The tunnel drying oven includes a base, a lower circulating hot air fan fixed to the top of the base, and an upper circulating hot air fan fixed to the upper surface of the lower circulating hot air fan. The lower circulating hot air fan and the upper circulating hot air fan are fixedly connected to each other by a pallet conveyor. The front end of the base is fixedly connected to a feed inlet, and the rear end of the base is fixedly connected to a cooling fan.

[0006] Each soybean flour drying tray includes multiple square trays stacked on top of each other, a guide groove fixedly connected to the right side surface of the square tray, and a serpentine drying tube fixedly connected to the inner cavity of the square tray. Several hot air release pipes are embedded and fixed on the upper and lower surfaces of the serpentine drying tube. 6-8 fan-shaped silicone sheets are fixedly arranged in a ring array at the top surface port of each hot air release pipe. Strip handles are fixedly connected to the front and rear surfaces of the square tray, and raised strips are fixedly connected to the front and rear positions of the bottom surface of the square tray.

[0007] As a preferred embodiment of this utility model: the lower circulating hot air fan and the upper circulating hot air fan have space for the installation of the pallet conveyor and for the accommodation of the soybean flour drying pallet.

[0008] As a preferred embodiment of this utility model: the upper surface of the base is fixedly connected with a cover that covers the lower circulating hot air fan, the pallet conveyor and the upper circulating hot air fan.

[0009] As a preferred embodiment of this utility model: the front and rear ends of the cooling fan and the feed inlet are provided with feed openings and discharge openings for the soybean flour drying tray to enter and exit.

[0010] As a preferred embodiment of this utility model: the right side surface of the square tray and the left side wall of the guide groove are both provided with through holes for one end of the serpentine drying tube to pass through, and a sealing ring is installed inside the through hole.

[0011] As a preferred embodiment of this utility model: the top surface of the guide channel is open, which is used to guide the hot air blown out by the lower and upper circulating hot air fans into the interior of the serpentine drying tube.

[0012] As a preferred embodiment of this utility model: the upper surface of the strip handle is provided with grooves for the coupling of the protruding strip, and there is a gap of 1.0cm-1.5cm between the upper and lower contacts of the square tray, so that the hot air can enter the interior of the square tray along the gap.

[0013] As a preferred embodiment of this utility model: the serpentine drying tube is located in the middle section of the inner cavity of the square tray, and the upper and lower surfaces of the serpentine drying tube are provided with multiple openings for the inlay of the heating air release pipes.

[0014] As a preferred embodiment of this utility model: the fan-shaped silicone sheets are in contact with each other, and each fan-shaped silicone sheet is embedded with a memory metal wire, so that the fan-shaped silicone sheets can only bend outwards to release hot air from the hot air release pipe, thereby preventing soybean powder from entering the inside of the hot air release pipe.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] The soybean flour drying trays are square trays stacked with gaps between them, allowing hot air to enter along these gaps. Combined with the serpentine drying pipes and hot air release pipes, this further enhances the contact between hot air and soybean flour, improving drying efficiency. The fan-shaped silicone sheet at the top of the hot air release pipe contains shape-memory metal wires, which can only bend outwards to release hot air, effectively preventing soybean flour from entering and ensuring normal equipment operation. A cover is installed on the base to reduce heat loss and lower energy consumption. Inlet and outlet openings are provided at the feed inlet and cooling fan for easy loading and unloading of the soybean flour drying trays, enabling continuous drying operations. The overall structure is reasonable, enabling efficient and uniform drying of soybean flour and ensuring its quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the tunnel drying oven;

[0019] Figure 2 This is a schematic diagram of the tunnel drying oven.

[0020] Figure 3 This is a schematic diagram showing the stacked trays after the soybean flour drying process.

[0021] Figure 4 A schematic diagram showing the disassembled structure of a soybean flour drying tray;

[0022] Figure 5 This is a schematic diagram of the hot air release pipe on the serpentine drying pipe.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Tunnel drying oven; 11. Base; 12. Lower circulating hot air fan; 13. Pallet conveyor; 14. Cooling fan; 15. Machine cover; 16. Upper circulating hot air fan; 17. Feed inlet; 2. Soybean flour drying tray; 21. Square tray; 22. Raised strip; 23. Strip handle; 24. Snake-shaped drying pipe; 25. Hot air release pipe; 26. Guide groove; 27. Fan-shaped silicone sheet. Detailed Implementation

[0025] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principles of the embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific parts in particular drawings may be exaggerated to illustrate relevant details or structures of the embodiments of this disclosure. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0026] Example 1: In a practical application of a continuous soybean flour drying device, the base 11 of the tunnel drying oven 1 is stably placed on the workshop floor. The lower circulating hot air fan 12 is fixed to the top of the base 11 with bolts, and the upper circulating hot air fan 16 is also fixed to the upper surface of the lower circulating hot air fan 12 with bolts. The two are connected by a tray conveyor 13 by welding, forming a space for the installation of the tray conveyor 13 and for accommodating the soybean flour drying trays 2. The feed inlet 17 is welded to the front end of the base 11, and the cooling fan 14 is welded to the rear end. The front and rear ends of the cooling fan 14 and the feed inlet 17 are provided with feed openings and discharge openings for the soybean flour drying trays 2 to enter and exit. The upper surface of the base 11 is fixed to the cover 15 with bolts, and the cover 15 covers the lower circulating hot air fan 12, the tray conveyor 13, and the upper circulating hot air fan 16.

[0027] In the soybean flour drying tray 2, multiple square trays 21 are stacked one on top of the other. Through holes are formed on the right side surface of the square tray 21 and the left side wall of the guide channel 26 for one end of a serpentine drying tube 24 to pass through. Sealing rings are installed inside the through holes to fix the serpentine drying tube 24 in the middle section of the inner cavity of the square tray 21. Multiple openings for hot air release pipes 25 are formed on the upper and lower surfaces of the serpentine drying tube 24. Six fan-shaped silicone sheets 27 are fixed in a circular array at the top surface port of the hot air release pipe 25, with memory metal wires embedded inside the fan-shaped silicone sheets 27. Strip handles 23 are welded to the front and rear surfaces of the square tray 21, and protruding strips 22 are welded to the front and rear positions of the bottom surface. Grooves are formed on the upper surface of the strip handles 23 for the protruding strips 22 to engage. A 1.0 cm gap is maintained between the upper and lower contacts of the square trays 21.

[0028] During operation, soybean powder is placed in the square tray 21 of the soybean powder drying tray 2. The tray conveyor 13 transports the soybean powder drying tray 2 into the tunnel drying oven 1 through the feed inlet 17. The lower circulating hot air fan 12 and the upper circulating hot air fan 16 blow out hot air, which is guided into the serpentine drying tube 24 by the guide channel 26, and then released through the hot air release pipe 25. The fan-shaped silicone sheet 27 bends outward under the action of the hot air to release the hot air, thus drying the soybean powder. After drying, the soybean powder drying tray 2 is sent to the cooling fan 14 by the tray conveyor 13 for cooling, and finally discharged from the discharge outlet.

[0029] Example 2: In another application scenario of a continuous soybean flour drying device, the base 11 of the tunnel drying oven 1 is installed in a specific area of ​​the workshop. The lower circulating hot air fan 12 is connected to the top of the base 11 with screws, and the upper circulating hot air fan 16 is fixed to the upper surface of the lower circulating hot air fan 12 with screws. The two are connected to the pallet conveyor 13 by a snap-fit ​​structure to form the required space. The front end of the base 11 is connected to the feed inlet 17 by welding, and the rear end is connected to the cooling fan 14 by screws. The feed opening and discharge opening of the cooling fan 14 and the feed inlet 17 are set according to the design requirements. The upper surface of the base 11 is fixed to the cover 15 by a slot structure, and the cover 15 covers the internal components.

[0030] When multiple square trays 21 of the soybean flour drying tray 2 are stacked, the through holes on the right side surface of the square tray 21 and the left side wall of the guide groove 26 are sealed with rubber sealing rings to the serpentine drying tube 24, which is located in the middle section of the inner cavity of the square tray 21. The hot air release pipe 25 is embedded in the openings on the upper and lower surfaces of the serpentine drying tube 24, and eight fan-shaped silicone sheets 27 are fixed at the top end, with memory metal wires embedded in the fan-shaped silicone sheets 27. The front and rear surfaces of the square tray 21 are fixed with strip handles 23 by rivets, and the front and rear positions of the bottom surface are fixed with protrusions 22 by welding. The grooves of the strip handles 23 mate with the protrusions 22, and the vertical spacing between the square trays 21 is maintained at 1.5cm.

[0031] During operation, soybean flour is loaded into soybean flour drying tray 2 and then conveyed into tunnel drying oven 1 through feed inlet 17 by tray conveyor 13. The lower circulating hot air fan 12 and the upper circulating hot air fan 16 generate hot air, which enters the serpentine drying pipe 24 through guide channel 26 and is released from hot air release pipe 25. The fan-shaped silicone sheet 27 bends under the action of the hot air to release the hot air, drying the soybean flour. The dried soybean flour drying tray 2 is then conveyed by tray conveyor 13 to cooling fan 14 for cooling, and finally discharged from discharge outlet.

[0032] Example 3: In a continuous soybean flour drying device applied to a soybean flour processing plant, the base 11 of the tunnel drying furnace 1 is installed in a suitable location in the workshop. The lower circulating hot air fan 12 is fixed to the top of the base 11 with expansion bolts, and the upper circulating hot air fan 16 is fixed to the upper surface of the lower circulating hot air fan 12 with bolts and gaskets. A pallet conveyor 13 is bolted between the two to form the required space. The front end of the base 11 is connected to the feed inlet 17 via a flange, and the rear end is bolted to the cooling fan 14. The feed openings and discharge openings of the cooling fan 14 and the feed inlet 17 are set according to process requirements. A cover 15 is magnetically attached to the upper surface of the base 11, covering the internal components.

[0033] When multiple square trays 21 of the soybean flour drying tray 2 are stacked, the through holes on the right side surface of the square tray 21 and the left side wall of the guide groove 26 are sealed with sealant to form a serpentine drying tube 24, which is located in the middle of the inner cavity of the square tray 21. A hot air release pipe 25 is embedded in the openings on the upper and lower surfaces of the serpentine drying tube 24, and seven fan-shaped silicone sheets 27 are fixed to the top end, with memory metal wires embedded in the fan-shaped silicone sheets 27. Strip handles 23 are glued to the front and rear surfaces of the square tray 21, and protrusions 22 are welded to the front and rear positions of the bottom surface. The grooves of the strip handles 23 mate with the protrusions 22, and the vertical spacing between the square trays 21 is maintained at 1.2 cm.

[0034] During operation, soybean flour is placed into the soybean flour drying tray 2, and the tray conveyor 13 transports the tray 2 from the feed inlet 17 into the tunnel drying oven 1. The lower circulating hot air fan 12 and the upper circulating hot air fan 16 blow hot air, which enters the serpentine drying pipe 24 through the guide channel 26 and is released from the hot air release pipe 25. The fan-shaped silicone sheet 27 bends under the action of the hot air, releasing the hot air and drying the soybean flour. After drying, the soybean flour drying tray 2 is conveyed by the tray conveyor 13 to the cooling fan 14 for cooling, and finally discharged from the discharge opening.

[0035] Based on the above preferred technical solution, the workflow of this technical solution is described as follows:

[0036] The operator evenly spreads the soybean flour to be dried in the square tray 21 of the soybean flour drying tray 2, controlling the thickness according to actual needs. Then, the soybean flour drying tray 2 with the soybean flour spread is placed at the starting position of the tray conveyor 13. The tray conveyor 13 starts, sending the soybean flour drying tray 2 into the tunnel drying oven 1 through the feed opening 17. The lower circulating hot air fan 12 and the upper circulating hot air fan 16 start simultaneously, blowing out hot air. Guided by the guide channel 26, the hot air enters the serpentine drying tube 24. The hot air flows in the serpentine drying tube 24 and is released into the square tray 21 through the hot air release pipes 25 embedded on the upper and lower surfaces of the serpentine drying tube 24. Under the action of the hot air, the fan-shaped silicone sheet 27 at the top of the hot air release pipe 25, due to the embedded memory metal wire, can only bend outwards from the hot air release pipe 25, thus evenly releasing the hot air into the soybean flour to dry it. Meanwhile, since there is a 1.0cm-1.5cm gap between the top and bottom of the square tray 21, some hot air will enter the interior of the square tray 21 along this gap to further dry the soybean flour, forming a circulating hot air drying effect.

[0037] During the drying process, the pallet conveyor 13 moves slowly and continuously, propelling the soybean flour drying pallet 2 forward within the tunnel drying oven 1. This allows the soybean flour to dry gradually at different temperature zones, ensuring uniform drying. The drying process is complete when the soybean flour drying pallet 2 reaches the rear end of the tunnel drying oven 1. The pallet conveyor 13 then transports the dried soybean flour drying pallet 2 to the cooling fan 14. The cooling fan 14 starts, blowing cold air onto the soybean flour drying pallet 2 to cool the dried soybean flour and prevent it from spoiling due to excessive heat. After cooling, the pallet conveyor 13 sends the soybean flour drying pallet 2 out through the discharge opening of the cooling fan 14. Operators then remove the dried and cooled soybean flour from the drying pallet 2 for subsequent packaging and other processing. Simultaneously, the empty soybean flour drying pallet 2 can be reloaded with soybean flour to be dried, repeating the above workflow to achieve continuous soybean flour drying.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A continuous soybean flour drying device, comprising a tunnel drying oven (1), characterized in that: The tunnel drying oven (1) has two rows of stacked soybean flour drying trays (2) inside. The tunnel drying oven (1) includes a base (11), a lower circulating hot air fan (12) fixed on the top of the base (11), and an upper circulating hot air fan (16) fixed on the upper surface of the lower circulating hot air fan (12). The lower circulating hot air fan (12) and the upper circulating hot air fan (16) are fixedly connected to each other by a pallet conveyor (13). The front end of the base (11) is fixedly connected to a feed inlet (17), and the rear end of the base (11) is fixedly connected to a cooling fan (14). Each soybean flour drying tray (2) includes multiple square trays (21) stacked on top of each other, a guide groove (26) fixedly connected to the right side surface of the square tray (21), and a serpentine drying tube (24) fixedly connected to the inner cavity of the square tray (21). Several hot air release tubes (25) are embedded and fixed on the upper and lower surfaces of the serpentine drying tube (24). 6-8 fan-shaped silicone sheets (27) are fixedly arranged in a ring array at the top surface port of each hot air release tube (25). Strip handles (23) are fixedly connected to the front and rear surfaces of the square tray (21). Protrusions (22) are fixedly connected to the front and rear positions of the bottom surface of the square tray (21).

2. The continuous soybean flour drying device according to claim 1, characterized in that: The lower circulating hot air fan (12) and the upper circulating hot air fan (16) have space between them for the installation of the pallet conveyor (13) and the accommodation of the soybean flour drying pallet (2).

3. The continuous soybean flour drying device according to claim 1, characterized in that: The upper surface of the base (11) is fixedly connected with a cover (15) that covers the lower circulating hot air fan (12), the pallet conveyor (13) and the upper circulating hot air fan (16).

4. The continuous soybean flour drying device according to claim 1, characterized in that: The cooling fan (14) and the feed inlet (17) are provided with feed openings and discharge openings on their front and rear ends for the soybean flour drying tray (2) to enter and exit.

5. The continuous soybean flour drying device according to claim 1, characterized in that: The right side surface of the square tray (21) and the left side wall of the guide groove (26) are provided with through holes for one end of the serpentine drying tube (24) to pass through, and a sealing ring is installed inside the through hole.

6. The continuous soybean flour drying device according to claim 1, characterized in that: The top surface of the guide channel (26) is open, which is used to guide the hot air blown out by the lower circulating hot air fan (12) and the upper circulating hot air fan (16) into the interior of the serpentine drying tube (24).

7. The continuous soybean flour drying device according to claim 1, characterized in that: The upper surface of the strip handle (23) is provided with a groove for the coupling and insertion of the protrusion (22). The square tray (21) has a gap of 1.0cm-1.5cm between its upper and lower contacts, which is used for the hot air to enter the interior of the square tray (21) along the gap.

8. The continuous soybean flour drying device according to claim 1, characterized in that: The serpentine drying tube (24) is located in the middle of the inner cavity of the square tray (21), and the upper and lower surfaces of the serpentine drying tube (24) are provided with multiple openings for the heating air release tubes (25).

9. A continuous soybean flour drying device according to claim 1, characterized in that: The fan-shaped silicone sheets (27) are in contact with each other, and each fan-shaped silicone sheet (27) has a memory metal wire embedded inside, so that the fan-shaped silicone sheets (27) can only bend and release hot air to the outside of the hot air release pipe (25), thus preventing soybean powder from entering the inside of the hot air release pipe (25).

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