Tunnel type sweet potato baking oven with adjustable conveying speed

Abstract

The utility model discloses a kind of tunnel type sweet potato baking oven of adjustable conveying speed, belong to sweet potato baking field, including tunnel type baking oven main body, the tunnel type baking oven main body is divided into first baking section, second baking section and third baking section, the inside of the tunnel type baking oven main body is equipped with conveying assembly, the inside of conveying assembly one end is equipped with tensioning roller;By being driven by conveying motor, drive roller is driven by transmission system after being speed-changed in gear box, and in combination with the accurate regulation and control of controller, the running speed of conveying assembly can be flexibly infinitely variable adjusted, which enables operating personnel to accurately match optimal baking duration according to the variety, size and initial moisture content difference of sweet potato, fundamentally solves the problem of baking deficiency (undercooked) or overbaking (burnt) caused by fixed speed of traditional equipment, ensures that the maturity of sweet potato finished product is uniform, taste and flavor are consistent, significantly improves product pass rate and standardization level.

Description

Technical Field

[0001] This utility model belongs to the field of sweet potato baking technology, specifically relating to a tunnel-type sweet potato baking oven with adjustable conveying speed. Background Technology

[0002] Sweet potato roasting is a traditional food processing method, and its flavor is loved by consumers. At present, large-scale production mainly relies on tunnel ovens, which carry sweet potatoes through the heating zone via conveyor belts to complete the roasting process. However, existing tunnel-type baking ovens have a fixed conveying speed, resulting in poor baking uniformity. Due to the differences in the size and moisture content of sweet potatoes, the fixed speed leads to some sweet potatoes being under-baked or over-baked, resulting in unstable product quality and difficulty in meeting standardized production requirements. Most baking ovens use a single temperature zone or have imprecise temperature zone division, making it impossible to accurately control the temperature according to different baking stages. This not only affects the formation of the best flavor of sweet potatoes but also causes energy waste. Therefore, this utility model provides a tunnel-type sweet potato baking oven with adjustable conveying speed. Utility Model Content

[0003] The purpose of this invention is to provide a tunnel-type sweet potato roasting oven with adjustable conveying speed to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tunnel-type sweet potato roasting oven with adjustable conveying speed, comprising a tunnel-type roasting oven body, the tunnel-type roasting oven body being divided into a first roasting section, a second roasting section and a third roasting section, a conveying component being provided inside the tunnel-type roasting oven body, a tension roller being provided inside one end of the conveying component, a drive roller being provided inside the other end of the conveying component, and a controller being provided on one side of the tunnel-type roasting oven body.

[0005] In a preferred embodiment, a conveyor motor is fixedly connected to one side of the tunnel oven body, and a gearbox is fixedly connected to the output end of the conveyor motor. One end of the gearbox is connected to one end of the drive roller.

[0006] In a preferred embodiment, the main body of the tunnel baking oven is fixedly connected to a feeding rack at one end of the tension roller. Guide cavities are provided on both sides of the feeding rack, and an adjusting plate is slidably connected inside each guide cavity. The two ends of the tension roller are rotatably connected inside the two adjusting plates respectively.

[0007] In a preferred embodiment, a transmission screw is rotatably connected to the bottom of the feeding rack, a drive motor is fixedly connected to one end of the transmission screw, a movable frame is threadedly connected to the external part of the transmission screw, and two ends of the top of the movable frame are fixedly connected to two adjusting plates respectively.

[0008] In a preferred embodiment, each of the baking sections is equipped with a heating plate inside, and each of the baking sections is rotatably connected to a movable door on the front side. The inner wall of the tunnel-type baking oven body is equipped with a heat-insulating plate.

[0009] In a preferred embodiment, the output terminal of the controller is electrically connected to the input terminals of the three heating plates, the conveyor motor, the gearbox, and the drive motor via conductive connections.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This tunnel-type sweet potato roasting oven with adjustable conveyor speed features a transmission system driven by a conveyor motor, which in turn drives the drive rollers via a gearbox. Combined with precise control by a controller, the operating speed of the conveyor components can be flexibly and steplessly adjusted. This allows operators to accurately match the optimal roasting time based on the variety, size, and initial moisture content of the sweet potatoes. This fundamentally solves the problem of under-roasting (undercooked) or over-roasting (burnt) caused by the fixed speed of traditional equipment. It ensures that the finished sweet potatoes have uniform ripeness and consistent taste and flavor, significantly improving the product qualification rate and standardization level. This tunnel-type sweet potato roasting oven with adjustable conveyor speed divides the main body of the oven into three roasting sections: a first roasting section, a second roasting section, and a third roasting section. Each roasting section is equipped with an independent heating plate. With the controller, the temperature of each section can be independently set and controlled, which can accurately simulate the different temperature environments required for each stage of sweet potato roasting. This not only maximizes the best flavor and color of the sweet potatoes and optimizes the process, but also avoids energy waste caused by a single temperature zone, effectively reducing the energy consumption cost per unit of product. This tunnel-type sweet potato roasting oven with adjustable conveyor speed features a tensioning mechanism that automates the adjustment of the tensioning roller position. By controlling the drive motor to rotate the transmission screw via a controller, the moving frame and its fixed adjusting plate slide smoothly along the guide cavity, precisely adjusting the tensioning roller position to compensate for chain slack. This design eliminates the need for manual operation during machine operation or maintenance, allowing for rapid tensioning and significantly improving operational stability and continuity, reducing maintenance time, and increasing production efficiency. Attached Figure Description

[0011] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the tension roller assembly. Figure 4 This is a schematic diagram of the controller circuit configuration of the present invention.

[0012] In the diagram: 1. Main body of the tunnel-type baking oven; 101. First baking section; 102. Second baking section; 103. Third baking section; 104. Movable door; 105. Heating plate; 2. Feeding rack; 201. Guide cavity; 202. Adjusting plate; 3. Conveying assembly; 301. Tensioning roller; 302. Drive roller; 4. Conveying motor; 5. Gearbox; 6. Controller; 7. Moving frame; 8. Drive motor; 9. Transmission screw. Detailed Implementation

[0013] The present invention will be further described below with reference to the embodiments.

[0014] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0015] Please see Figures 1-4 This utility model provides a tunnel-type sweet potato roasting oven with adjustable conveying speed, including a tunnel-type roasting oven body 1, which is divided into a first roasting section 101, a second roasting section 102 and a third roasting section 103. The tunnel-type roasting oven body 1 is provided with a conveying component 3 inside, and a drive roller 302 is provided inside the other end of the conveying component 3. A controller 6 is provided on one side of the tunnel-type roasting oven body 1, and a conveying motor 4 is fixedly connected to one side of the tunnel-type roasting oven body 1. A gearbox 5 is fixedly connected to the output end of the conveying motor 4. One end of the gearbox 5 is connected to one end of the drive roller 302. Each roasting section is provided with a heating plate 105 inside, and a movable door 104 is rotatably connected to the front of each roasting section. A heat preservation plate is provided in the inner wall of the tunnel-type roasting oven body 1. The output end of the controller 6 is electrically connected to the three heating plates 105, the conveying motor 4, the gearbox 5 and the input end of the drive motor 8 through a guide. The device is turned on by the controller 6. The controller 6 issues a command and the conveyor motor 4 starts to run. The output end of the conveyor motor 4 drives the gearbox 5 which is fixedly connected to it to work. The gearbox 5 adjusts and changes the speed of the conveyor motor 4 and then transmits the power to the drive roller 302. The drive roller 302 starts to rotate under the power drive, which in turn drives the conveyor component 3 to move. The sweet potato moves into the tunnel oven body 1 along with the conveyor component 3. Sweet potatoes are sequentially fed into the first baking section 101, the second baking section 102, and the third baking section 103 via the conveyor assembly 3. The controller 6 controls the heating plates 105 in each baking section according to a pre-set program. In the first baking section 101, the heating plates 105 heat at a lower temperature, allowing the moisture inside the sweet potatoes to evaporate slowly, preventing the surface from drying too quickly and forming a hard crust, ensuring even heating inside the sweet potatoes. Upon entering the second baking section 102, the controller 6 adjusts the temperature of the heating plates 105 in this section to increase the temperature, promoting the conversion of sugars inside the sweet potatoes and gradually producing a caramelized flavor. When the sweet potatoes reach the third baking section 103, the controller 6 again adjusts the temperature of the heating plates 105 to a lower temperature for final baking and heat preservation, preventing over-burning and ensuring the sweet potatoes reach the optimal baking state. The tunnel-type baking oven body 1 has an insulation plate inside its main wall. During the baking process, the insulation plate effectively reduces heat loss from the oven, maintains a stable temperature inside the oven, improves energy efficiency, and reduces energy consumption. Each baking section has a rotating movable door 104 on its front. During normal operation, the movable door 104 is closed to ensure stable oven temperature. When inspection or maintenance of the baking section is required, the corresponding movable door 104 can be opened. Since different batches of sweet potatoes vary in variety, size, and moisture content, the required baking time also varies. Operators can adjust the speed of the conveyor motor 4 through the controller 6 according to the actual situation. The controller 6 sends a command to the gearbox 5, which changes the transmission ratio, thereby adjusting the speed of the drive roller 302 and thus changing the running speed of the conveyor assembly 3. If the sweet potatoes require a longer baking time, the speed of the conveyor assembly 3 can be reduced; conversely, the speed can be increased to ensure that the sweet potatoes can be baked within a suitable time. After the sweet potatoes have been baked in the three baking sections, as the conveyor assembly 3 moves to the end of the conveyor, the operator removes the baked sweet potatoes from the conveyor assembly 3, completing the entire baking process. The speed of the conveyor motor 4 is adjusted by the controller 6, and after being changed by the gearbox 5, it drives the drive roller 302, realizing stepless adjustment of the running speed of the conveyor component 3. Operators can accurately match the best baking time according to the differences in sweet potato variety, size and moisture content. This solves the problem that some sweet potatoes are under-baked (undercooked) or over-baked (burnt) due to the fixed speed of traditional equipment. It ensures that the finished sweet potato is uniformly cooked and has a consistent taste and flavor, which significantly improves the product qualification rate and standardization level. The main body of the oven is divided into three baking sections, with an independent heating plate 105 in each section. The controller 6 allows for independent temperature setting and control of each section, precisely simulating the different temperature environments required at each stage of sweet potato baking. In the first baking section 101, low-temperature slow baking ensures even moisture evaporation; in the second baking section 102, the temperature is increased to promote sugar conversion and caramelization; and in the third baking section 103, low-temperature insulation prevents scorching. This maximizes the optimal flavor and color of the sweet potatoes, improving product quality. Independent temperature control for each baking section avoids energy waste caused by a single temperature zone. Temperature is precisely adjusted according to the needs of different stages of sweet potato baking, providing sufficient heat only when high temperatures are required and reducing energy input during low-temperature stages, effectively lowering the energy cost per unit product. The insulation plate on the inner wall of the tunnel-type oven body 1 effectively reduces heat loss from the oven to the outside, maintaining a stable oven temperature and reducing the extra energy consumed to maintain the temperature, further improving energy efficiency.

[0016] In this embodiment, a tension roller 301 is provided inside one end of the conveying component 3. A feeding rack 2 is fixedly connected to one end of the tension roller 301 of the tunnel baking oven body 1. Guide cavities 201 are provided on both sides of the feeding rack 2. An adjusting plate 202 is slidably connected inside each guide cavity 201. The two ends of the tension roller 301 are rotatably connected to the inside of the two adjusting plates 202 respectively. A transmission screw 9 is rotatably connected to the bottom of the feeding rack 2. A drive motor 8 is fixedly connected to one end of the transmission screw 9. A movable frame 7 is threadedly connected to the outside of the transmission screw 9. The two ends of the top of the movable frame 7 are fixedly connected to the two adjusting plates 202 respectively. When the equipment is not started, the tension roller 301 is in an initial position. At this time, the conveying component 3 has a certain initial tension to ensure that the conveying component 3 can run smoothly at the moment the equipment is started, and will not slip or jump due to insufficient tension. The adjusting plate 202 is located in the corresponding initial position in the guide cavity 201, and the moving frame 7 is also in the initial position after being connected to the adjusting plate 202. The transmission screw 9 is in a stationary state. When the tunnel-type sweet potato roasting oven is started, the conveyor motor 4 starts working, driving the drive roller 302 to rotate through the gearbox 5, which in turn drives the conveyor assembly 3 to move. During the operation of the conveyor assembly 3, due to factors such as long-term use, temperature changes, or uneven sweet potato load, the conveyor assembly 3 may become loose. Once the loosening of the conveyor assembly 3 is observed, the controller 6 will send a start signal to the drive motor 8 according to the preset program or the operator's instruction. After receiving the signal, the drive motor 8 starts running, and its output end drives the transmission screw 9 to rotate. During the rotation of the transmission screw 9, since it is threadedly connected to the moving frame 7, according to the principle of threaded transmission, the moving frame 7 will move along the axial direction of the transmission screw 9. Since the two ends of the top of the moving frame 7 are fixedly connected to the two adjusting plates 202 respectively, the movement of the moving frame 7 will drive the adjusting plates 202 to slide in the guide cavity 201. Since the two ends of the tension roller 301 are rotatably connected to the inside of the two adjusting plates 202 respectively, when the adjusting plates 202 slide in the guide cavity 201, they will drive the tension roller 301 to move together. The change in the position of the tension roller 301 will adjust the tension of the conveying component 3, so that the conveying component 3 can be restored to a suitable tension state, ensuring that the conveying component 3 can operate stably and smoothly, and guaranteeing the conveying accuracy and stability of sweet potatoes during the baking process. Once the conveying component 3 reaches the appropriate tension, the controller 6 sends a stop signal to the drive motor 8, causing the drive motor 8 to stop running. The transmission screw 9 also stops rotating, and the moving frame 7, adjusting plate 202, and tension roller 301 stop moving. At this time, the conveying component 3 continues to operate while maintaining the new tension. Throughout the entire operation of the equipment, the tension of the conveying component 3 will be continuously monitored so that adjustments can be made in a timely manner if slack occurs again.

[0017] The working principle and usage process of this utility model are as follows: When the equipment is not started, the tension roller 301 is in the initial position, the conveying component 3 has an initial tension, the adjusting plate 202 and the moving frame 7 are in the corresponding initial positions, and the transmission screw 9 is stationary. After the equipment is started, the controller 6 instructs the conveyor motor 4 to operate. After the gearbox 5 changes speed, it drives the drive roller 302 to rotate, which drives the conveyor assembly 3 to move. The sweet potatoes then move into the oven. During operation, the conveyor assembly 3 may loosen due to factors such as long-term use. When this is observed, the controller 6 sends a start signal to the drive motor 8 according to the preset program or operation command. The drive motor 8 drives the transmission screw 9 to rotate. Because it is threadedly connected to the moving frame 7, the moving frame 7 moves axially, which drives the adjusting plate 202 to slide in the guide cavity 201. This, in turn, drives the tension roller 301 to move, adjusting the tension of the conveyor assembly 3 to a suitable state to ensure smooth operation and stable sweet potato conveying. After the suitable tension is reached, the controller 6 instructs the drive motor 8 to stop. All components stop moving, and the conveyor assembly 3 continues to operate in the new state. The tension is continuously monitored throughout the process for timely adjustment. Sweet potatoes are conveyed into the first, second, and third baking sections in sequence by the conveyor assembly 3. The controller 6 controls the operation of the heating plates 105 in each section according to the preset program: the first section is low-temperature slow baking, which allows the internal moisture of the sweet potatoes to evaporate slowly and be heated evenly; the second section is heating up to promote the conversion of sugar and produce a caramel flavor; the third section is low-temperature heat preservation to prevent burning. The furnace wall insulation plate reduces heat loss, maintains a stable temperature, and improves energy utilization. Each baking section has a movable door 104 on the front, which is closed during normal operation and can be opened for inspection and maintenance. Because different batches of sweet potatoes vary, operators can adjust the speed of the conveyor motor 4 via the controller 6, change the transmission ratio via the gearbox 5, adjust the speed of the drive roller 302, and thus change the speed of the conveyor assembly 3 to ensure that the sweet potatoes are baked at the appropriate time. After baking, the sweet potatoes are moved to the end with the conveyor assembly 3, where the operator removes them, completing the entire process.

[0018] It should be noted that the baking oven is equipped with other intelligent detection components, which are all existing publicly available technologies, so they are not described in detail.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel-type sweet potato roasting oven with adjustable conveying speed, comprising a tunnel-type roasting oven body (1), characterized in that: The tunnel oven body (1) is divided into a first baking section (101), a second baking section (102) and a third baking section (103). The tunnel oven body (1) is equipped with a conveying assembly (3). One end of the conveying assembly (3) is equipped with a tension roller (301), and the other end of the conveying assembly (3) is equipped with a drive roller (302). A controller (6) is provided on one side of the tunnel oven body (1).

2. The adjustable conveying speed tunnel type sweet potato roasting oven according to claim 1, characterized in that: A conveyor motor (4) is fixedly connected to one side of the main body (1) of the tunnel oven. A gearbox (5) is fixedly connected to the output end of the conveyor motor (4). One end of the gearbox (5) is connected to one end of the drive roller (302).

3. The adjustable conveying speed tunnel type sweet potato roasting oven according to claim 2, characterized in that: The main body (1) of the tunnel baking oven is fixedly connected to a feeding rack (2) at one end of the tension roller (301). The feeding rack (2) has guide cavities (201) on both sides. Each guide cavity (201) is slidably connected to an adjusting plate (202). The two ends of the tension roller (301) are respectively rotatably connected to the inside of the two adjusting plates (202).

4. The adjustable conveying speed tunnel type sweet potato roasting oven according to claim 3, characterized in that: The bottom of the feeding rack (2) is rotatably connected to a transmission screw (9), one end of which is fixedly connected to a drive motor (8), and the external thread of the transmission screw (9) is connected to a movable frame (7). The two ends of the top of the movable frame (7) are respectively fixedly connected to two adjusting plates (202).

5. A tunnel-type sweet potato roasting oven with adjustable conveying speed according to claim 4, characterized in that: Each of the baking sections is equipped with a heating plate (105) inside, and each of the baking sections is rotatably connected to a movable door (104) on the front. The inner wall of the tunnel oven body (1) is equipped with a heat preservation plate.

6. A tunnel-type sweet potato roasting oven with adjustable conveying speed according to claim 5, characterized in that: The output of the controller (6) is electrically connected to the inputs of the three heating plates (105), the conveyor motor (4), the gearbox (5), and the drive motor (8) via conductive connections.

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