Double-circulation hot blast stove drying device

Abstract

The utility model provides a kind of double-cycle hot blast furnace drying device, including drying cabinet, hot blast furnace is equipped in the drying cabinet, the hot blast furnace is arranged in the one end of the drying cabinet, the other end of the drying cabinet is equipped with air blower, vertical heat exchange component and transverse heat exchange pipe are sequentially arranged on the flue gas passage of the hot blast furnace, the transverse heat exchange pipe is arranged at the top of the drying cabinet, the transverse heat exchange pipe end is connected with exhaust fan, the exhaust fan is arranged outside the drying cabinet.The utility model utilizes the heat generated by coal or biological pellet combustion and the heat carried by smoke to circulate heat dissipation through heat dissipation pipeline, makes hot air circulate and flow in container by fan, then dries the goods in drying cabinet, compared with traditional hot drying, drying time is shortened by more than 30%, and cost is reduced by 50%.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a dual-circulation hot air furnace drying device. Background Technology

[0002] Agricultural and sideline products are generally dried using drying rooms or drying boxes. Existing drying facilities have low drying efficiency and low energy utilization efficiency. Furthermore, when using non-continuous energy sources, such as wood combustion for heat, operators need to enter the drying room or drying box to add fuel to ensure continuous drying. This is not only inconvenient but also poses safety hazards, potentially leading to smoke poisoning or fainting. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a dual-circulation hot air furnace drying device to improve the drying efficiency and operational safety of the drying oven.

[0004] To achieve the above objectives, this utility model provides a dual-circulation hot air furnace drying device, including a drying box, a hot air furnace inside the drying box, the hot air furnace being located at one end of the drying box, a blower being located at the other end of the drying box, a vertical heat exchange component and a horizontal heat exchange tube being sequentially arranged on the exhaust channel of the hot air furnace, the horizontal heat exchange tube being arranged at the top of the drying box, the end of the horizontal heat exchange tube being connected to an exhaust fan, and the exhaust fan being located outside the drying box.

[0005] Preferably, the vertical heat exchange assembly is arranged in two sets of centralized heat exchange boxes on both sides of the hot blast stove. The centralized heat exchange box includes two manifolds arranged at different heights of the hot blast stove. Multiple heat exchange tubes are arranged in an array between the two manifolds on the same side of the hot blast stove. A flue gas outlet is provided on the top manifold, and the horizontal heat exchange tube is connected to the flue gas outlet.

[0006] Preferably, the hot air furnace includes a furnace chamber, which is provided with a feed inlet and an ash collection box, both of which extend to the outside of the drying chamber.

[0007] Preferably, the drying chamber is further provided with a sandwich plate, and the transverse heat exchange tube is arranged between the sandwich plate and the outer wall of the drying chamber.

[0008] Preferably, the blower is disposed on the sandwich panel.

[0009] Preferably, the drying box is made from a shipping container.

[0010] Compared with the prior art, the dual-circulation hot air furnace drying device provided by this utility model has the following beneficial effects:

[0011] 1. This utility model utilizes the heat generated by the combustion of coal or biomass pellets and the heat carried by the smoke to circulate and dissipate heat through heat dissipation pipes. The hot air is circulated inside the container by a fan to dry the items inside the drying box. Compared with traditional hot drying, the drying time is shortened by more than 30% and the cost is reduced by 50%.

[0012] 2. This utility model has a simple structure, low manufacturing cost, and is easy to operate during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front view structure of one embodiment of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of one embodiment of the present utility model.

[0015] Figure 3 This is a schematic diagram of another front view structure of one embodiment of the present utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of a hot air furnace in one embodiment of the present invention.

[0017] Figure 5 This is a three-dimensional structural diagram of the hot air furnace in one embodiment of the present invention.

[0018] In the diagram: 1. Drying box; 2. Hot air furnace; 3. Blower; 4. Vertical heat exchange component; 5. Horizontal heat exchange tube; 6. Exhaust fan; 7. Central heat exchange box; 8. Manifold box; 9. Heat exchange tube; 10. Flue gas outlet; 11. Furnace chamber; 12. Feed inlet; 13. Ash collection box; 14. Sandwich plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] As a preferred embodiment of this utility model, such as Figures 1-5 Show, Figure 1The direction of the arrow indicates the direction of airflow. This embodiment provides a dual-circulation hot air furnace drying device, including a drying box 1. A hot air furnace 2 is provided inside the drying box 1. The hot air furnace 2 is located at one end of the drying box 1, and a blower 3 is provided at the other end of the drying box 1. A vertical heat exchange component 4 and a horizontal heat exchange pipe 5 are sequentially arranged on the exhaust channel of the hot air furnace 2. The horizontal heat exchange pipe 5 is arranged at the top of the drying box 1, and the end of the horizontal heat exchange pipe 5 is connected to an exhaust fan 6. The exhaust fan 6 is located outside the drying box 1.

[0021] In a preferred embodiment, such as Figure 4 or Figure 5 As shown, the vertical heat exchange assembly 4 is arranged in two sets of centralized heat exchange boxes 7 on both sides of the hot air furnace 2. The centralized heat exchange box 7 includes two manifold boxes 8 arranged at different heights on the hot air furnace 2. Multiple heat exchange tubes 9 are arranged in an array between the two manifold boxes 8 on the same side of the hot air furnace 2. A flue gas outlet 10 is provided on the manifold box 8 at the top. The horizontal heat exchange tube 5 is connected to the flue gas outlet 10.

[0022] In another preferred embodiment, such as Figure 4 As shown, the hot air furnace 2 includes a furnace chamber 11, which is provided with a feed inlet 12 and an ash collection box 13. Both the feed inlet 12 and the ash collection box 13 extend to the outside of the drying chamber 1.

[0023] In the above embodiment, both the feed inlet 12 and the ash collection box 13 are led out to the outside of the drying chamber 1, which makes it convenient for operators to replenish the combustibles, so that they can operate without entering the drying chamber, reducing the safety hazards of operation and simplifying the operation method.

[0024] In some embodiments, such as Figure 1 As shown, the drying oven 1 is also provided with a sandwich plate 14, and the transverse heat exchange tube 5 is arranged between the sandwich plate 14 and the outer wall of the drying oven 1.

[0025] In other embodiments, the blower 3 is mounted on the sandwich panel 14. In this embodiment, by providing a sandwich panel, the air inside the drying chamber can be guided to form a directional circulating flow, improving heat exchange efficiency and extending the hot air flow path, thereby improving drying efficiency and heat utilization efficiency.

[0026] As can be understood from the description of this utility model, the drying box 1 in this utility model can be made from a shipping container. This allows for the use of standard containerization to form a standardized drying device. Furthermore, shipping containers have lower costs, are easier to purchase in bulk, and reduce the production cycle.

[0027] In the process of hot air drying of agricultural products, air enters the furnace and smoke enters the heat dissipation smoke pipe from the furnace. After heat exchange between the two, the hot smoke enters the secondary heat dissipation smoke pipe, namely the top horizontal heat exchange tube, from the smoke outlet. The smoke is then drawn out by the induced draft fan. This process does not occupy production space, has a simple structure, and is inexpensive.

[0028] Inside the container, air is blown towards the agricultural products by a fan unit. After passing over the products, it reaches the area around the hot air furnace, where it is heated as it passes through the furnace body and the outer wall of the heat dissipation and smoke ducts. The air then flows upward through the upper air duct of the container and returns to the fan, where it is blown out again as hot air to dry the agricultural products. The large shell area results in high heat transfer efficiency, thus improving heat exchange efficiency.

[0029] It should be noted that this utility model is not limited to drying agricultural products, but can also be used to dry other materials that need to be dried, and it can also achieve the effect of improving drying efficiency.

[0030] It should be noted that in this invention, the hot air undergoes two heat exchanges using vertical heat exchange components and horizontal heat exchange tubes. At the same time, the blower and the sandwich plate further facilitate the directional flow of air inside the drying chamber, thus achieving two heat exchanges and two or even multiple cycles, which can greatly improve drying efficiency and heat utilization efficiency.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dual-circulation hot air furnace drying device, comprising a drying box, wherein a hot air furnace is disposed within the drying box, the hot air furnace is disposed at one end of the drying box, and a blower is disposed at the other end of the drying box, characterized in that: The hot air furnace has vertical heat exchange components and horizontal heat exchange tubes arranged sequentially on its exhaust duct. The horizontal heat exchange tubes are arranged at the top of the drying box, and the ends of the horizontal heat exchange tubes are connected to exhaust fans. The exhaust fans are located outside the drying box.

2. The dual-circulation hot air furnace drying device according to claim 1, characterized in that: The vertical heat exchange components are arranged in two sets of centralized heat exchange boxes on both sides of the hot blast stove. The centralized heat exchange box includes two manifolds arranged at different heights of the hot blast stove. Multiple heat exchange tubes are arranged in an array between the two manifolds on the same side of the hot blast stove. A flue gas outlet is provided on the top manifold, and the horizontal heat exchange tube is connected to the flue gas outlet.

3. The dual-circulation hot air furnace drying device according to claim 1, characterized in that: The hot air furnace includes a furnace chamber, which is provided with a feed inlet and an ash collection box, both of which extend to the outside of the drying chamber.

4. The dual-circulation hot air furnace drying device according to claim 1, characterized in that: The drying chamber is also equipped with a sandwich plate, and the transverse heat exchange tubes are arranged between the sandwich plate and the outer wall of the drying chamber.

5. The dual-circulation hot air furnace drying device according to claim 4, characterized in that: The blower is mounted on the sandwich panel.

6. The dual-circulation hot air furnace drying device according to claim 1, characterized in that: The drying box is made from a shipping container.

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