Efficient energy-saving step-by-step hot air circulation drying equipment for bean products

Abstract

The utility model discloses a kind of high-efficiency energy-saving step ladder type hot air circulation drying equipment of bean products, it is related to bean product processing technical field, including drying chamber, lower layer drying cavity, middle layer drying cavity, upper layer drying cavity, conveyor, flow guide slide, flue one, discharge gate and resistance flow belt, flue one other end is connected with heat exchanger, the outside of drying chamber is also provided with hot air conveying assembly, the design adopts multilayer step ladder type layout and converts horizontal conveying to three-dimensional conveying, material is automatically conveyed and shifts from feeding to discharging whole process, without manual intervention, reduce labor intensity, and cooperate countercurrent hot air circulation, ensure that material can be in reasonable temperature and humidity environment in whole drying path, heated evenly, avoid the problem of local overheating or insufficient drying, product color, form and taste consistency are better, heat exchanger is additionally provided at flue, realize the heat energy recovery in discharging waste gas, for preheating fresh air, substantially reduce the energy consumption of heater.

Description

Technical Field

[0001] This utility model relates to the field of soybean product technology, and in particular to a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products. Background Technology

[0002] Currently, box-type or tunnel-type drying equipment is commonly used for drying soybean products. However, these existing technologies have the following key drawbacks in practical applications: First, the hot air from traditional equipment usually passes through the drying chamber once and is directly discharged. The exhaust temperature is high and contains a lot of moisture. Direct discharge results in a huge waste of heat energy. Heating fresh cold air requires a lot of energy (electricity or fuel), which leads to high production costs. Secondly, the flat or single-layer conveying drying method can easily lead to uneven heating of materials. Materials near the hot air vent are prone to over-drying or even charring, while materials far from the hot air vent or inside the stack are under-dried, affecting the consistency and appearance of product quality. Therefore, this utility model provides a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products, which solves the problems mentioned in the background technology.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products, including a drying chamber, wherein the drying chamber is arranged in a stepped manner from bottom to top, comprising a lower drying chamber, a middle drying chamber, and an upper drying chamber, and conveyors are installed inside the drying chamber in the lower drying chamber, the middle drying chamber, and the upper drying chamber, and a guide plate is installed at the connection point of every two conveyors; The top of the drying chamber is equipped with a smoke exhaust pipe, and the bottom of the drying chamber is provided with a discharge port corresponding to the conveyor in the lower drying chamber, and multiple flow-blocking strips are distributed inside the discharge port. One end of the exhaust pipe is connected to a heat exchanger, and a hot air delivery assembly is also provided on the outside of the drying chamber.

[0005] As a further technical solution of this utility model, the flow-blocking strip is a soft ribbon made of plastic, and a magnetic sheet is provided on the side of each pair of adjacent flow-blocking strips.

[0006] As a further technical solution of this utility model, an air inlet pipe is provided on one side of the heat exchanger above the first exhaust pipe, and an exhaust pipe and an air outlet pipe are provided on the other side of the heat exchanger. The second exhaust pipe is connected to the first exhaust pipe, and the air inlet pipe is connected to the air outlet pipe.

[0007] As a further technical solution of this utility model, the hot air conveying assembly includes a blower and a heater. The exhaust end of the blower is connected to the other end of the exhaust pipe through a pipe, and the exhaust end of the blower is connected to the heater. The other end of the heater is connected to an air supply pipe, and the other end of the air supply pipe extends through the drying chamber to the bottom of the lower drying chamber.

[0008] As a further technical solution of this utility model, the bottom of the upper drying chamber and the middle drying chamber are inclined, and the bottom of the upper drying chamber and the middle drying chamber extend inclinedly into the lower drying chamber.

[0009] As a further technical solution of this utility model, a feeding hopper is provided on the upper side of the drying chamber, and the discharge port of the feeding hopper is located at the conveyor inside the upper drying chamber, and is located directly above the feeding end of the conveyor. A PLC control box is also installed on the outer side of the drying chamber.

[0010] This utility model provides a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products, which has the following advantages compared with the prior art: 1. This design is a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products. It adopts a multi-layer stepped layout to transform horizontal conveying into three-dimensional conveying, so that the material is automatically conveyed and transferred from feeding to discharging without manual intervention. This reduces labor intensity, improves production efficiency, and ensures the stability of the process and hygiene standards. Moreover, with the counter-current hot air circulation, it ensures that the material is in a reasonable temperature and humidity environment throughout the drying path, and is heated evenly, avoiding the problems of local overheating or under-drying. The product has better consistency in color, shape and taste.

[0011] 2. This design provides a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products. A heat exchanger is added to the exhaust pipe and connected to the hot air circulation component to facilitate heat exchange of the exhaust high-temperature flue gas, thereby preheating the air entering the drying chamber. This achieves the recovery of heat energy from the exhaust gas for preheating fresh air, significantly reducing the energy consumption of the heater. Attached Figure Description

[0012] Figure 1 This is a first structural perspective view of the present invention; Figure 2 This is a second structural perspective view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 In this utility model Figure 3 Side view; Figure 5 This is an internal top view of the present invention.

[0013] In the diagram: 1. Drying chamber; 11. Feed hopper; 12. Discharge port; 13. Baffle strip; 14. Exhaust pipe one; 15. Exhaust pipe two; 2. Heat exchanger; 21. Air inlet pipe; 22. Air outlet pipe; 23. Blower; 24. Heater; 25. Air supply pipe; 3. PLC control box; 4. Upper drying chamber; 5. Middle drying chamber; 6. Lower drying chamber; 7. Conveyor; 8. Guide slide plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This utility model provides a technical solution for a high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products: A high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products includes a drying chamber 1. The drying chamber 1 adopts a multi-layer stepped layout. In this embodiment, it is preferably three layers, which are formed sequentially from bottom to top as a lower drying chamber 6, a middle drying chamber 5, and an upper drying chamber 4. The bottom of the upper drying chamber 4 and the middle drying chamber 5 are inclined, and the bottom of the upper drying chamber 4 and the middle drying chamber 5 extends inclinedly into the lower drying chamber 6.

[0016] Furthermore, the interior of the drying chamber 1 is equipped with conveyors 7 in the lower drying chamber 6, the middle drying chamber 5, and the upper drying chamber 4. The conveyors 7 can preferably be mesh belt conveyors or plate chain conveyors. A feeding hopper 11 is set at the upper end of one side of the drying chamber 1. The discharge port of the feeding hopper 11 is located at the conveyor 7 inside the upper drying chamber 4, and is located directly above the feeding end of the conveyor 7. A PLC control box 3 is also installed on the outer side of the drying chamber 1. A guide slide plate 8 is installed at the junction of every two conveyors 7, so that the material can automatically fall and transfer from top to bottom by gravity through the guide slide plate 8. The bottom of the drying chamber 1 is provided with a discharge port 12 corresponding to the conveyor 7 in the lower drying chamber 6. Multiple flow-blocking strips 13 are distributed on the inner side of the discharge port 12. The flow-blocking strips 13 are soft plastic strips. Each pair of adjacent flow-blocking strips 13 is provided with a magnetic sheet on its side. The flow-blocking strips 13 can reduce the loss of hot air from the discharge port 12. The magnetic sheet can make adjacent flow-blocking strips 13 attract each other, enhance the sealing effect, and at the same time, it does not affect the discharge of materials. The top of the drying chamber 1 is equipped with a flue pipe 14, and the other end of the flue pipe 14 is connected to a heat exchanger 2. The heat exchanger 2 is a plate heat exchanger, a tube heat exchanger, or a gas-to-gas heat exchanger. An air inlet pipe 21 is set on one side of the heat exchanger 2 above the flue pipe 14. The air inlet pipe 21 is connected to the outside and is used to draw in cold fresh air. On the other side of the heat exchanger 2, there is a second flue pipe 15 and an air outlet pipe 22. The second flue pipe 15 is used to discharge the cooled exhaust gas. The second flue pipe 15 is connected to the first flue pipe 14. The air inlet pipe 21 is connected to the air outlet pipe 22 and is used to deliver the preheated fresh air to the air inlet of the heater 24. After passing through each layer of material, the hot air finally enters the flue pipe 14 from the air outlet of the upper drying chamber 4, forming a counter-current hot air circulation from bottom to top.

[0017] A hot air conveying assembly is also provided on the outside of the drying chamber 1. The hot air conveying assembly includes a blower 23 and a heater 24. The exhaust end of the blower 23 is connected to the other end of the exhaust pipe 22 through a pipe, and the exhaust end of the blower 23 is connected to the heater 24. The other end of the heater 24 is connected to an air supply pipe 25. The other end of the air supply pipe 25 extends through the drying chamber 1 to the bottom of the lower drying chamber 6. Heating plates or heating pipes are distributed inside the heater 24, and a temperature sensor is also provided inside the heater 24 to control the hot air temperature.

[0018] The working principle of this utility model is as follows: During operation, the bean products to be dried enter the conveyor 7 in the upper drying chamber 4 from the feeding hopper 11. As the conveyor 7 runs, they are dried. Then, they fall through the guide slide plate 8 to the conveyor 7 in the middle drying chamber 5 to continue drying. Then, they fall through the guide slide plate 8 to the conveyor 7 in the lower drying chamber 6 to complete the drying. Finally, they are discharged from the discharge port 12. At the same time, the blower 23 sends the fresh air preheated by the heat exchanger 2 into the heater 24. After being heated by the heater 24, it forms dry hot air, which is sent into the lower drying chamber 6 through the air supply pipe 25. The hot air passes through the lower drying chamber 6, the middle drying chamber 5 and the upper drying chamber 4 from bottom to top, and exchanges heat with the material to achieve counter-current drying. After absorbing moisture, the high-temperature and humid exhaust gas enters the exhaust pipe 14 and flows into the heat exchanger 2, where it exchanges heat with the cold fresh air drawn in by the air inlet pipe 21. The preheated fresh air enters the blower 23 through the air outlet pipe 22 to re-enter the circulation, and the cooled exhaust gas is discharged through the exhaust pipe 15.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products, characterized in that, The drying chamber (1) includes a drying chamber (6), which is arranged in a stepped manner from bottom to top, consisting of a lower drying chamber (6), a middle drying chamber (5), and an upper drying chamber (4). Conveyors (7) are installed in the lower drying chamber (6), the middle drying chamber (5), and the upper drying chamber (4) of the drying chamber (1). A guide slide (8) is installed at the junction of every two conveyors (7). The top of the drying chamber (1) is equipped with a smoke exhaust pipe (14), and the bottom of the drying chamber (1) is provided with a discharge port (12) corresponding to the conveyor (7) in the lower drying chamber (6), and multiple flow-blocking strips (13) are distributed inside the discharge port (12). The other end of the exhaust pipe (14) is connected to a heat exchanger (2), and a hot air conveying assembly is also provided on the outside of the drying chamber (1).

2. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 1, characterized in that, The flow-blocking strip (13) is a soft ribbon made of plastic, and magnetic sheets are provided on the sides of each pair of adjacent flow-blocking strips (13).

3. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 1, characterized in that, The heat exchanger (2) has an air inlet pipe (21) located above the first exhaust pipe (14) on one side, and an exhaust pipe (25) and an air outlet pipe (22) are provided on the other side of the heat exchanger (2). The second exhaust pipe (15) is connected to the first exhaust pipe (14), and the air inlet pipe (21) is connected to the air outlet pipe (22).

4. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 1, characterized in that, The hot air delivery assembly includes a blower (23) and a heater (24). The exhaust end of the blower (23) is connected to the other end of the exhaust pipe (22) through a pipe, and the exhaust end of the blower (23) is connected to the heater (24). The other end of the heater (24) is connected to an air supply pipe (25), and the other end of the air supply pipe (25) extends through the drying chamber (1) to the bottom of the lower drying chamber (6).

5. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 4, characterized in that, The heater (24) has heating plates or heating tubes distributed inside, and a temperature sensor is also installed inside the heater (24).

6. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 1, characterized in that, The bottom of the upper drying chamber (4) and the middle drying chamber (5) are inclined, and the bottom of the upper drying chamber (4) and the middle drying chamber (5) extend inclinedly into the lower drying chamber (6).

7. The high-efficiency and energy-saving stepped hot air circulation drying equipment for soybean products according to claim 1, characterized in that, A feeding hopper (11) is provided on the upper side of the drying chamber (1). The outlet of the feeding hopper (11) is located at the conveyor (7) inside the upper drying chamber (4) and is located directly above the feeding end of the conveyor (7). A PLC control box (3) is also installed on the outer side of the drying chamber (1).

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