Tunnel type drying oven

Abstract

A tunnel type drying oven comprises a preheating section, a high-temperature section and a cooling section which are sequentially in butt joint and further comprises a mixing cavity, a first air supplementing assembly is arranged between an air outlet of the preheating section and the mixing cavity, and the mixing cavity is communicated with an air inlet of the preheating section through a first air outlet. A second air supplementing assembly is arranged between the second air outlet of the mixing cavity and the air inlet of the high-temperature section, and a third air supplementing assembly is arranged between the air outlet of the cooling section and the mixing cavity. One part of hot air of the high-temperature section enters the preheating section and enters the mixing cavity through the first air supplementing assembly along with exhaust air of the preheating section, the other part of hot air of the high-temperature section enters the cooling section, meanwhile, exhaust air of the cooling section enters the mixing cavity through the third air supplementing assembly, and exhaust air of the preheating section and exhaust air of the cooling section are mixed and subjected to heat exchange in the mixing cavity. One part of air in the mixing chamber enters the preheating section through the first air outlet to supplement air for the preheating section, and the other part of air is supplemented for the high-temperature section, so that the operation cost of the drying oven is reduced, outward exhaust is reduced, and the drying oven is more energy-saving and environment-friendly.

Description

Technical Field

[0001] The invention relates to the field of food and medicine packaging machinery, and in particular to a tunnel type oven. Background Art

[0002] In recent years, people have paid more and more attention to the operating costs of equipment and the impact of equipment on the environment during operation. The existing tunnel oven adopts outdoor exhaust mode, which is not the best choice in terms of operating costs or environmental protection. Figure 1 As shown in the figure, during operation, the air intake and exhaust volume of the bottle washing room are basically the same. The preheating section and the high-temperature section need to be supplemented with air from the bottle washing room. After the air in the preheating section exchanges heat with the bottle body, a small part is discharged to the bottle washing room, and most of it is discharged to the outside. The air in the high-temperature section is heated by the heater and the temperature increases while the pressure increases. After the high-temperature gas exchanges heat with the bottle body, a part is discharged to the preheating section, and the other part is discharged to the cooling section. For the cooling section, in addition to the air flowing into the high-temperature section, there is also air flowing into the filling room. These two parts of air are discharged to the outside after heat exchange with the bottle body. The air discharged from the preheating section and the cooling section cannot be reused, which increases the operating cost of the equipment and has a greater impact on the environment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a tunnel oven with a simple structure, which is beneficial to reducing the operating cost of the equipment and reducing external exhaust.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A tunnel oven comprises a preheating section, a high temperature section and a cooling section connected in sequence, and also comprises a mixing chamber, a first air supply component is arranged between an exhaust port of the preheating section and the mixing chamber, the mixing chamber is connected with an air inlet of the preheating section through a first air outlet, a second air supply component is arranged between a second air outlet of the mixing chamber and an air inlet of the high temperature section, and a third air supply component is arranged between the exhaust port of the cooling section and the mixing chamber.

[0006] As a further improvement of the above technical solution: the first air supply component includes a first air supply pipeline and a first air supply fan, one end of the first air supply pipeline is connected to the exhaust port of the preheating section, the other end of the first air supply pipeline is connected to the air inlet of the first air supply fan, and the air outlet of the first air supply fan is connected to the mixing chamber.

[0007] As a further improvement of the above technical solution: a first filter is provided on the first air supply pipeline.

[0008] As a further improvement of the above technical solution: a first surface cooler is also provided on the first air supply pipeline.

[0009] As a further improvement of the above technical solution: the first air supply pipeline is arranged on the side of the preheating section, and the mixing chamber is arranged on the top surface of the preheating section.

[0010] As a further improvement of the above technical solution: the second air supply component includes a second air supply pipeline and a second air supply fan, one end of the second air supply pipeline is connected to the second air outlet, the other end of the second air supply pipeline is connected to the air inlet of the second air supply fan, and the air outlet of the second air supply fan is connected to the air inlet of the high temperature section.

[0011] As a further improvement of the above technical solution: the second air supply pipeline and the second air supply fan are arranged on the top surface of the high temperature section.

[0012] As a further improvement of the above technical solution: the third air supply component includes a third air supply fan and a third air supply pipeline, the air inlet of the third air supply fan is connected to the exhaust outlet of the cooling section, the air outlet of the third air supply fan is connected to one end of the third air supply pipeline, and the other end of the third air supply pipeline is connected to the mixing chamber.

[0013] As a further improvement of the above technical solution: the cooling section is provided with a second surface cooler, and the third air supply pipeline is provided with a second filter.

[0014] As a further improvement of the above technical solution: the third air supply fan is arranged on the top surface of the cooling section, and the third air supply pipeline is arranged on the top surfaces of the cooling section and the high temperature section.

[0015] Compared with the prior art, the advantages of the present invention are as follows: when the tunnel oven disclosed in the present invention is working, a part of the hot air in the high temperature section enters the preheating section due to its high temperature and high pressure, and enters the mixing chamber through the first air supply component along with the exhaust air of the preheating section, and the other part enters the cooling section, and at the same time, the exhaust air of the cooling section enters the mixing chamber through the third air supply component. The exhaust air of the preheating section and the exhaust air of the cooling section are mixed and heat exchanged in the mixing chamber, so that the temperature, humidity, etc. become balanced, a part of the air in the mixing chamber enters the preheating section through the first air outlet to supply air for the preheating section, and the other part enters the high temperature section through the second air outlet and the second air supply component to supply air for the high temperature section, thereby realizing the air recycling of the preheating section, the high temperature section and the cooling section to the preheating section and the high temperature section, and reducing the influence on the temperature and humidity of the preheating section and the high temperature section, the structure is simple, which is conducive to reducing the operating cost of the oven, reducing external exhaust, and being more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the operating status of an existing tunnel oven.

[0017] Figure 2 It is a schematic diagram of the main structure of the tunnel oven of the present invention.

[0018] Figure 3 It is a schematic diagram of the top view of the tunnel oven of the present invention.

[0019] Figure 4 yes Figure 2 AA view of the .

[0020] Figure 5 It is a schematic diagram of the structure of the second air supply component in the present invention when it is in operation.

[0021] Figure 6 It is a schematic diagram of the structure of the third air supply component in the present invention when it is in operation.

[0022] Figure 7 yes Figure 2 BB view.

[0023] The numbers in the figure represent: 1. preheating section; 2. high temperature section; 3. cooling section; 31. second surface cooler; 4. first supply air component; 41. first supply air pipeline; 42. first supply air fan; 43. mixing chamber; 431. first air outlet; 432. second air outlet; 44. first filter; 45. first surface cooler; 5. second supply air component; 51. second supply air pipeline; 52. second supply air fan; 6. third supply air component; 61. third supply air fan; 62. third supply air pipeline; 63. second filter; 7. bottle washing room. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Figures 2 to 7 An embodiment of the tunnel oven of the present invention is shown. The tunnel oven of this embodiment includes a preheating section 1, a high temperature section 2 and a cooling section 3 which are connected in sequence. A mixing chamber 43 is provided on the preheating section 1 (of course, the mixing chamber 43 can also be set at other positions, but compared with this embodiment, it will cause the overall pipeline structure of the oven to become complicated, the length to increase, and the corresponding equipment cost to increase). A first air supply component 4 is provided between the exhaust port of the preheating section 1 and the mixing chamber 43. The mixing chamber 43 is connected to the air inlet of the preheating section 1 through the first air outlet 431. A second air supply component 5 is provided between the second air outlet 432 of the mixing chamber 43 and the air inlet of the high temperature section 2. A third air supply component 6 is provided between the exhaust port of the cooling section 3 and the mixing chamber 43.

[0029] When the tunnel oven of the present embodiment is working, part of the hot air in the high temperature section 2 enters the preheating section 1 due to its high temperature and pressure, and enters the mixing chamber 43 along with the exhaust air of the preheating section 1 through the first air supply component 4, and the other part enters the cooling section 3. At the same time, the exhaust air of the cooling section 3 enters the mixing chamber 43 through the third air supply component 6. The exhaust air of the preheating section 1 and the exhaust air of the cooling section 3 are mixed and heat-exchanged in the mixing chamber 43, so that the temperature, humidity, etc. become balanced. Part of the air in the mixing chamber 43 enters the preheating section 1 through the first air outlet 431 to supply air for the preheating section 1, and the other part enters the high temperature section 2 through the second air outlet 432 and the second air supply component 5 to supply air for the high temperature section 2, thereby realizing the air recycling of the preheating section 1, the high temperature section 2 and the cooling section 3 to the preheating section 1 and the high temperature section 2, and reducing the influence on the temperature and humidity of the preheating section 1 and the high temperature section 2. The structure is simple, which is conducive to reducing the operating cost of the oven, reducing external exhaust, and being more energy-saving and environmentally friendly.

[0030] Further, in this embodiment, the first air supply component 4 includes a first air supply pipeline 41 and a first air supply fan 42, one end of the first air supply pipeline 41 is connected to the exhaust port of the preheating section 1, the other end of the first air supply pipeline 41 is connected to the air inlet of the first air supply fan 42, and the air outlet of the first air supply fan 42 is connected to the mixing chamber 43. When working, the first air supply fan 42 is running, and the air in the preheating section 1 enters the mixing chamber 43 through the first air supply pipeline 41 and the first air supply fan 42, and the structure is simple and reliable.

[0031] Furthermore, in this embodiment, a first filter 44 is provided on the first air supply pipeline 41. The exhaust air of the preheating section 1 is filtered by the first filter 44 to prevent impurities in the exhaust air from entering the mixing chamber 43 and then entering the preheating section 1 and the high temperature section 2, which is conducive to ensuring the cleanliness of the air supply of the preheating section 1 and the high temperature section 2.

[0032] Furthermore, in this embodiment, a first surface cooler 45 is further provided on the first air supply pipeline 41. The first surface cooler 45 is used to cool and dehumidify the exhaust air of the preheating section 1, thereby reducing the influence of the supply air on the air temperature and humidity in the preheating section 1 and the high temperature section 2, which is conducive to maintaining stable operation of the oven.

[0033] As a preferred embodiment, the first air supply pipeline 41 is arranged on the side of the preheating section 1, and the mixing chamber 43 is arranged on the top surface of the preheating section 1. The hot air entering the preheating section 1 from the high temperature section 2 tends to flow upward, and the mixing chamber 43 is arranged on the top surface of the preheating section 1, which is conducive to collecting the exhaust air of the preheating section 1, and also facilitates the mixed air to smoothly enter the preheating section 1 and the high temperature section 2, and will not change the existing structure of the preheating section 1, and the structure is simple and reasonable.

[0034] Furthermore, in this embodiment, the second air supply component 5 includes a second air supply pipeline 51 and a second air supply fan 52, one end of the second air supply pipeline 51 is connected to the second air outlet 432, the other end of the second air supply pipeline 51 is connected to the air inlet of the second air supply fan 52, and the air outlet of the second air supply fan 52 is connected to the air inlet of the high temperature section 2. When working, the second air supply fan 52 is running, and the air in the mixing chamber 43 passes through the second air outlet 432, the second air supply pipeline 51 and the second air supply fan 52 in sequence to enter the high temperature section 2, and the structure is simple and reliable.

[0035] As a preferred embodiment, the second air supply pipeline 51 and the second air supply fan 52 are arranged on the top surface of the high temperature section 2, so as to facilitate the mixed air in the mixing chamber 43 to smoothly enter the high temperature section 2, while not changing the existing structure of the high temperature section 2, and the layout is simple and reasonable.

[0036] Further, in this embodiment, the third air supply component 6 includes a third air supply fan 61 and a third air supply pipeline 62, the air inlet of the third air supply fan 61 is connected to the air outlet of the cooling section 3, the air outlet of the third air supply fan 61 is connected to one end of the third air supply pipeline 62, and the other end of the third air supply pipeline 62 is connected to the mixing chamber 43. When working, the third air supply fan 61, the air in the cooling section 3 enters the mixing chamber 43 through the third air supply fan 61 and the third air supply pipeline 62, and the structure is simple and reliable.

[0037] Furthermore, in this embodiment, the cooling section 3 is provided with a second surface cooler 31, and the third air supply pipe 62 is provided with a second filter 63. The second surface cooler 31 is used to cool and dehumidify the exhaust air of the cooling section 3, reducing the influence of the supply air on the air temperature and humidity in the preheating section 1 and the high temperature section 2, which is conducive to keeping the oven running stably; the second filter 63 is used to filter the exhaust air of the cooling section 3, preventing impurities in the exhaust air from entering the mixing chamber 43 and then entering the preheating section 1 and the high temperature section 2, which is conducive to ensuring the cleanliness of the supply air in the preheating section 1 and the high temperature section 2.

[0038] As a preferred embodiment, the third air supply fan 61 is arranged on the top surface of the cooling section 3, and the third air supply pipeline 62 is arranged on the top surfaces of the cooling section 3 and the high temperature section 2, so that the exhaust air of the cooling section 3 can smoothly enter the mixing chamber 43, and the existing structure of the cooling section 3 will not be changed. Of course, in other embodiments, the third air supply pipeline 62 can also be directly connected with the first air supply pipeline 41 for mixing, and then the preheating section 1 and the high temperature section 2 are supplied with air, but compared with setting a dedicated mixing chamber 43, the mixing effect is slightly worse.

[0039] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A tunnel oven, comprising a preheating section (1), a high temperature section (2) and a cooling section (3) connected in sequence, characterized in that: The invention also comprises a mixing chamber (43), a first air supply component (4) is arranged between the exhaust port of the preheating section (1) and the mixing chamber (43), the mixing chamber (43) is connected with the air inlet of the preheating section (1) through a first air outlet (431), a second air supply component (5) is arranged between the second air outlet (432) of the mixing chamber (43) and the air inlet of the high temperature section (2), and a third air supply component (6) is arranged between the exhaust port of the cooling section (3) and the mixing chamber (43).

2. The tunnel oven according to claim 1, characterized in that: The first air supply component (4) comprises a first air supply pipeline (41) and a first air supply fan (42); one end of the first air supply pipeline (41) is connected to the exhaust port of the preheating section (1); the other end of the first air supply pipeline (41) is connected to the air inlet of the first air supply fan (42); and the air outlet of the first air supply fan (42) is connected to the mixing chamber (43).

3. The tunnel oven according to claim 2, characterized in that: The first air supply pipeline (41) is provided with a first filter (44).

4. The tunnel oven according to claim 2, characterized in that: The first air supply pipeline (41) is also provided with a first surface cooler (45).

5. The tunnel oven according to claim 2, characterized in that: The first air supply pipeline (41) is arranged on the side of the preheating section (1), and the mixing chamber (43) is arranged on the top surface of the preheating section (1).

6. The tunnel oven according to claim 2, characterized in that: The second air supply component (5) comprises a second air supply pipeline (51) and a second air supply fan (52); one end of the second air supply pipeline (51) is connected to the second air outlet (432); the other end of the second air supply pipeline (51) is connected to the air inlet of the second air supply fan (52); and the air outlet of the second air supply fan (52) is connected to the air inlet of the high temperature section (2).

7. The tunnel oven according to claim 6, characterized in that: The second air supply pipeline (51) and the second air supply fan (52) are arranged on the top surface of the high temperature section (2).

8. The tunnel oven according to any one of claims 2 to 6, characterized in that: The third air supply component (6) includes a third air supply fan (61) and a third air supply pipeline (62), the air inlet of the third air supply fan (61) is connected to the air outlet of the cooling section (3), the air outlet of the third air supply fan (61) is connected to one end of the third air supply pipeline (62), and the other end of the third air supply pipeline (62) is connected to the mixing chamber (43).

9. The tunnel oven according to claim 8, characterized in that: The cooling section (3) is provided with a second surface cooler (31), and the third air supply pipeline (62) is provided with a second filter (63).

10. The tunnel oven according to claim 8, characterized in that: The third air supply fan (61) is arranged on the top surface of the cooling section (3), and the third air supply pipeline (62) is arranged on the top surfaces of the cooling section (3) and the high-temperature section (2).

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