Tunnel-type drying device

Abstract

The utility model discloses a tunnel type drying device belongs to drying technical field. Including drying mechanism, drying mechanism sets up in drying cavity, first reflux channel, first end of first reflux channel sets up in drying cavity, second end of first reflux channel sets up in preheating chamber, first reflux channel is provided with first fan, is used for the hot air of drying cavity is delivered to preheating chamber, second reflux channel, first end of second reflux channel sets up in preheating chamber, second end of second reflux channel sets up in precooling chamber, second reflux channel is provided with cold fan, is used for the air after heat exchange of preheating chamber is delivered to precooling chamber. The utility model discloses realized the recycling of heat energy, effectively reduced energy consumption, reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically to a tunnel drying device. Background Technology

[0002] In industrial production, tunnel drying equipment is widely used in various fields such as food, chemical, and electronics for drying various materials. Traditional tunnel drying equipment typically has only a single drying chamber, with hot air directly discharged after one drying cycle, resulting in significant energy waste and low energy efficiency. Furthermore, the uneven temperature distribution within a single drying chamber can easily lead to insufficient drying or localized over-drying, affecting product quality. Simultaneously, traditional drying equipment lacks effective temperature transition processing before and after drying. The large temperature difference when materials enter the drying chamber can cause changes in their physical structure, and direct exposure to the external environment after drying is detrimental to material stability, making it difficult to meet the demands of modern industrial production for efficient, energy-saving, and high-quality drying. Utility Model Content

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0004] A tunnel-type drying device includes a housing and a conveying mechanism disposed within the housing. The inner cavity of the housing has independently disposed preheating chamber, drying chamber, and precooling chamber. The preheating chamber, drying chamber, and precooling chamber are sequentially arranged and connected along the conveying direction of the conveying mechanism.

[0005] Also includes:

[0006] A drying mechanism is disposed within the drying chamber;

[0007] A first reflux channel is provided, with its first end located inside the drying chamber and its second end located inside the preheating chamber; the first reflux channel is equipped with a first fan for conveying hot air from the drying chamber to the preheating chamber.

[0008] The second return channel has a first end located inside the preheating chamber and a second end located inside the precooling chamber. The second return channel is equipped with a cold air fan for delivering the air that has undergone heat exchange in the preheating chamber to the precooling chamber.

[0009] Furthermore, the drying mechanism includes a heating chamber, a top air duct, and a side air duct;

[0010] The heating box is located at the top of the drying chamber. An array of heating tubes is installed inside the heating box. An air duct communicating with the outside is provided on the heating box. A second fan is installed inside the air duct.

[0011] The first end of the top air duct is located on the top wall of the drying chamber, the second end of the top air duct is connected to the heating box, and an axial flow fan is installed inside the top air duct.

[0012] Two side air ducts are provided. The first end of each side air duct is connected to the heating box, and the second end of each side air duct is located on the two side walls of the drying chamber. Centrifugal fans are installed in each side air duct.

[0013] Furthermore, a strip-shaped slit nozzle is installed at the second end of the top air duct, and the strip-shaped slit nozzle is located directly above the conveying mechanism.

[0014] Furthermore, a guide vane is also provided inside the top air duct.

[0015] Furthermore, each of the second ends of the side air ducts is connected to a U-shaped air nozzle, which is located on both sides of the conveying mechanism.

[0016] Furthermore, the air outlet of the U-shaped nozzle is provided with honeycomb-shaped flow equalization holes.

[0017] Furthermore, the top wall of the drying chamber also includes an infrared radiation mechanism, which includes an infrared plate. The infrared plate is inclinedly arranged on both sides of the conveying mechanism, and a high-temperature resistant quartz glass cover is provided on the side of the infrared plate closest to the conveying mechanism.

[0018] Furthermore, multiple drying mechanisms are provided, and these multiple drying mechanisms are evenly distributed within the drying chamber along the conveying direction of the conveying mechanism.

[0019] Furthermore, a V-shaped air collecting groove is provided at the bottom of the drying chamber, and the V-shaped air collecting groove is connected to the first end of the first return channel.

[0020] Beneficial effects:

[0021] This invention achieves the recycling of thermal energy by setting up a first reflux channel and a second reflux channel to transport the hot air from the drying chamber to the preheating chamber and the air after heat exchange in the preheating chamber to the precooling chamber, thereby effectively reducing energy consumption and production costs.

[0022] The heating chamber, top air duct, and side air duct in the drying mechanism of this utility model work together. The strip-shaped slit nozzles of the top air duct and the U-shaped nozzles of the side air duct, combined with the honeycomb flow equalization holes, can make the hot air evenly distributed in the drying chamber, avoid the phenomenon of uneven drying of materials in some areas, and significantly improve the drying quality.

[0023] The inner cavity of the shell of this utility model is independently equipped with a preheating chamber, a drying chamber and a precooling chamber, so that the material is preheated before entering the drying chamber to adapt to temperature changes, and then precooled after drying, so as to avoid adverse effects on the material performance due to sudden temperature changes and ensure the quality stability of the material.

[0024] The infrared radiation mechanism installed on the top wall of the drying chamber of this utility model, through the cooperation of the infrared plate and the high-temperature resistant quartz glass cover, can provide additional radiant heat energy from the side. Combined with hot air convection drying, it further accelerates the evaporation rate of moisture in the material and improves the drying efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the tunnel drying device of this utility model;

[0026] Among them, 1. preheating chamber; 2. drying chamber; 21. strip-shaped slit nozzle; 22. U-shaped nozzle; 23. V-shaped air collection groove; 3. precooling chamber; 4. first return channel; 5. second return channel. Detailed Implementation

[0027] Example 1

[0028] refer to Figure 1 A tunnel-type drying device includes a shell and a conveying mechanism disposed within the shell. The inner cavity of the shell has independently disposed preheating chamber 1, drying chamber 2 and precooling chamber 3; wherein, the preheating chamber 1, drying chamber 2 and precooling chamber 3 are arranged sequentially and connected along the conveying direction of the conveying mechanism.

[0029] Also includes:

[0030] A drying mechanism is installed inside the drying chamber 2.

[0031] The first return channel 4 has its first end located inside the drying chamber 2 and its second end located inside the preheating chamber. The first return channel 4 is equipped with a first fan for conveying hot air from the drying chamber 2 to the preheating chamber 1.

[0032] The second return channel 5 has its first end located in the preheating chamber 1 and its second end located in the precooling chamber 3. The second return channel 5 is equipped with a cold air fan, which is used to transport the air after heat exchange in the preheating chamber 3 to the precooling chamber 3.

[0033] In this embodiment, a sealing curtain is provided at the connection between the preheating chamber 1, the drying chamber 2, and the precooling chamber 3.

[0034] In this embodiment, sealing curtains are provided at the inlet of the preheating chamber and the outlet of the precooling chamber.

[0035] Preferably, the drying mechanism includes a heating chamber, a top air duct, and a side air duct;

[0036] The heating box is located at the top of the drying chamber 2. The heating box is equipped with an array of heating tubes and has an air duct that connects to the outside. A second fan is installed in the air duct.

[0037] The first end of the top air duct is set on the top wall of the drying chamber 2, and the second end of the top air duct is connected to the heating box. An axial flow fan is installed inside the top air duct.

[0038] There are two side air ducts. The first end of each side air duct is connected to the heating box, and the second end of each side air duct is located on the two side walls of the drying chamber 2. Centrifugal fans are installed in each side air duct.

[0039] Preferably, a strip-shaped slit nozzle 21 is installed at the second end of the top air duct, and the strip-shaped slit nozzle 21 is located directly above the conveying mechanism.

[0040] Preferably, a baffle plate is also installed inside the top air duct.

[0041] Preferably, the second end of each side air duct is connected to a U-shaped air nozzle 22, and the U-shaped air nozzle 22 is arranged on both sides of the conveying mechanism.

[0042] Preferably, the air outlet of the U-shaped nozzle 22 is provided with honeycomb-type flow equalization holes.

[0043] Preferably, the top wall of the drying chamber 2 also includes an infrared radiation mechanism, which includes an infrared plate. The infrared plate is inclinedly arranged on both sides of the conveying mechanism, and a high-temperature resistant quartz glass cover is provided on the side of the infrared plate closest to the conveying mechanism.

[0044] Preferably, multiple drying mechanisms are provided, and the multiple drying mechanisms are evenly distributed in the drying chamber 2 along the conveying direction of the conveying mechanism.

[0045] Preferably, a V-shaped air collecting groove 23 is provided at the bottom of the drying chamber, and the V-shaped air collecting groove 23 is connected to the first end of the first return channel 4.

[0046] In this embodiment, temperature sensors are provided in the first reflux channel 4, the second reflux channel 5, the preheating chamber 1, the drying chamber 2, and the precooling chamber 3.

[0047] In this embodiment, the conveying mechanism is a conveyor belt.

[0048] In other embodiments, a regulating cavity is provided on the first return channel 4, and a temperature controller is provided inside the regulating cavity.

[0049] Working Principle: Oral liquid bottles enter the preheating chamber via a conveying mechanism for preheating, then proceed to the drying chamber, and finally precool. This process adapts to temperature changes and avoids adverse effects on material properties caused by sudden temperature fluctuations, ensuring the stability of material quality. An infrared radiation mechanism on the top wall of the drying chamber, through the cooperation of an infrared plate and a high-temperature resistant quartz glass cover, provides additional radiant heat energy from the side. Combined with hot air convection drying, this further accelerates the evaporation of moisture from the material, improving drying efficiency. The heating chamber, top air duct, and side air duct work together. The strip-shaped slit nozzles in the top air duct and the U-shaped nozzles in the side air ducts, combined with honeycomb-type flow equalization holes, ensure that hot air is evenly distributed within the drying chamber, preventing uneven drying in certain areas and significantly improving drying quality. The first and second return channels transport hot air from the drying chamber to the preheating chamber and air from the preheating chamber after heat exchange to the precooling chamber, achieving the recycling of heat energy, effectively reducing energy consumption and lowering production costs.

[0050] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A tunnel-type drying device, comprising a housing and a conveying mechanism disposed within the housing, characterized in that, The inner cavity of the housing has independently arranged preheating cavity, drying cavity and precooling cavity; wherein, the preheating cavity, the drying cavity and the precooling cavity are arranged sequentially and connected along the conveying direction of the conveying mechanism; Also includes: A drying mechanism is disposed within the drying chamber; A first reflux channel is provided, with its first end located inside the drying chamber and its second end located inside the preheating chamber; the first reflux channel is equipped with a first fan for conveying hot air from the drying chamber to the preheating chamber. The second return channel has a first end located inside the preheating chamber and a second end located inside the precooling chamber. The second return channel is equipped with a cold air fan for delivering the air that has undergone heat exchange in the preheating chamber to the precooling chamber.

2. The tunnel drying device as described in claim 1, characterized in that, The drying mechanism includes a heating chamber, a top air duct, and a side air duct; The heating box is located at the top of the drying chamber. An array of heating tubes is installed inside the heating box. An air duct communicating with the outside is provided on the heating box. A second fan is installed inside the air duct. The first end of the top air duct is located on the top wall of the drying chamber, the second end of the top air duct is connected to the heating box, and an axial flow fan is installed inside the top air duct. Two side air ducts are provided. The first end of each side air duct is connected to the heating box, and the second end of each side air duct is located on the two side walls of the drying chamber. Centrifugal fans are installed in each side air duct.

3. The tunnel drying device as described in claim 2, characterized in that, A strip-shaped slit nozzle is installed at the second end of the top air duct, and the strip-shaped slit nozzle is located directly above the conveying mechanism.

4. The tunnel drying device as described in claim 2, characterized in that, A guide vane is also installed inside the top air duct.

5. The tunnel drying device as described in claim 2, characterized in that, The second end of each side air duct is connected to a U-shaped air nozzle, which is located on both sides of the conveying mechanism.

6. The tunnel drying device as described in claim 5, characterized in that, The U-shaped air nozzle has a honeycomb-shaped flow equalization hole at its air outlet.

7. The tunnel drying device as described in claim 1, characterized in that, The top wall of the drying chamber also includes an infrared radiation mechanism, which includes an infrared plate. The infrared plate is inclinedly arranged on both sides of the conveying mechanism, and a high-temperature resistant quartz glass cover is provided on the side of the infrared plate closest to the conveying mechanism.

8. The tunnel drying device as described in claim 1, characterized in that, The drying mechanism is provided in multiple ways, and the multiple drying mechanisms are evenly distributed in the drying chamber along the conveying direction of the conveying mechanism.

9. The tunnel drying device as described in claim 1, characterized in that, The bottom of the drying chamber is provided with a V-shaped air collection groove, which is connected to the first end of the first return channel.

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