Hot air circulation type tunnel electric oven

Abstract

The utility model discloses a hot air circulation type tunnel electric oven which comprises an electric oven body, a fixed support and a movable support are arranged at the two ends of the electric oven body respectively, conveying rollers are rotationally arranged on the fixed support and the movable support, a conveying belt is wound between the two conveying rollers, and a stable support is arranged on one side of the lower end of the electric oven body. The movable support and the stable support are in threaded connection through a first lead screw, an upper electric heating plate and a lower electric heating plate are arranged in the electric oven body, and the upper electric heating plate and the lower electric heating plate are oppositely moved and adjusted through a first sliding block and a second lead screw. The movable support can be transversely moved and adjusted by rotating the first lead screw, so that the distance between the two conveying rollers can be adjusted, the tightness degree of the conveying belt can be adjusted, and the requirement that the conveying belts with different tightness degrees convey materials to be dried and used is met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric ovens, in particular to a hot air circulation type tunnel electric oven. Background Art

[0002] Electric ovens are categorized as household, food, and industrial. They are essential equipment in biscuit production, and their performance directly impacts biscuit quality, production efficiency, and energy consumption. Due to the length of these ovens (typically around 60 meters), existing tunnel ovens in biscuit processing equipment require exhaust pipes at each interval to allow hot steam to escape and reduce the moisture content of the biscuits upon exiting the oven.

[0003] A hot air circulation tunnel electric oven with application number 202420007109.7 in the prior art includes an electric oven main box, an induced draft fan is installed on the left side of the electric oven main box, and an exhaust fan and a dehumidification bin are installed on the top. The inner cavity of the electric oven main box is provided with an exhaust bin, a mesh conveyor belt, a transmission roller supporting the mesh conveyor belt, a heater and two symmetrically arranged air equalizing bins from top to bottom. A plurality of air outlets are equidistantly provided on the upper end surface of the air equalizing bin. The air equalizing bin on the left is connected to the induced draft fan through an air inlet pipe, and the air equalizing bin on the right is connected to the exhaust fan, the dehumidification bin and the exhaust bin in sequence through a return air pipe. The left and right side walls of the electric oven main box are processed with openings for conveying materials with the mesh conveyor belt. Both ends of the mesh conveyor belt extend to the outside of the electric oven main box and are externally connected to a transmission drive device. This utility model has the following advantages and effects: it can fully utilize heat energy and has good baking quality. However, it is inconvenient to adjust the tightness of the conveyor belt. When the conveyor belt is loose, it is easy to affect the efficiency of the conveyor belt in continuously conveying materials for drying. Utility Model Content

[0004] The purpose of the utility model is to provide a hot air circulation tunnel electric oven to solve the problem in the prior art that it is inconvenient to adjust the tightness of the conveyor belt, and when the conveyor belt is loose, it is easy to affect the efficiency of the conveyor belt in continuously conveying materials for drying.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot air circulation tunnel electric oven, comprising an electric oven body, a fixed bracket and a movable bracket are respectively provided at both ends of the electric oven body, conveying rollers are rotatably provided on the upper ends of the fixed bracket and the movable bracket, and a conveyor belt is wound between the two conveying rollers, a stable bracket is provided on one side of the lower end of the electric oven body, and the movable bracket and the stable bracket are threadedly connected by a first screw, an upper electric heating plate and a lower electric heating plate are provided inside the electric oven body, electric heating rods are provided inside the upper electric heating plate and the lower electric heating plate, and the upper electric heating plate and the lower electric heating plate are adjusted by moving toward each other through a first slider and a second screw.

[0006] Furthermore, hot air circulation covers are provided in the middle of both sides of the electric oven body, and a hot air circulation pipe is connected between the two hot air circulation covers.

[0007] Furthermore, a blower and a dehumidifier are provided at the upper end of the hot air circulation pipe, and a filter is also provided on the hot air circulation pipe.

[0008] Furthermore, the first screw includes a screw rod rotatably arranged in the middle of the upper portion of the stable bracket, the middle portion of the lower end of the movable bracket is threadedly connected to the screw rod, and one end of the screw rod is provided with an adjustment handle and a locking bolt.

[0009] Furthermore, a guide rail is provided between the stable bracket and the electric oven body, and both sides of the lower end of the movable bracket are slidably arranged with the guide rail through guide holes, and pulleys are provided on the lower sides of both ends of the movable bracket.

[0010] Furthermore, two opposite sets of external threads are provided on the outer sides of both ends of the second lead screw, and the upper and lower first sliding blocks are respectively threadedly connected to the two opposite external threads.

[0011] Furthermore, second sliders are provided on both sides of the upper electric heating plate and the lower electric heating plate, and the second sliders are slidably arranged with the limiting rods inside the electric oven body.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The movable bracket and the stable bracket of the utility model are connected by a first screw thread, so that the movable bracket can be adjusted to move laterally by rotating the first screw, thereby adjusting the distance between the two conveying rollers, and then adjusting the tightness of the conveyor belt to meet the needs of conveyor belts with different tightness for drying and use, and the tightness adjustment is convenient and quick.

[0014] 2. The utility model is provided with an upper electric heating plate and a lower electric heating plate inside the electric oven body, and electric heating rods are provided inside the upper and lower electric heating plates, so that the materials conveyed on the conveyor belt can be heated and dried in the upper and lower directions at the same time, which is beneficial to improving the uniformity of drying. Moreover, the upper and lower electric heating plates are adjusted to move toward each other by the first slider and the second lead screw, so that the upper and lower electric heating plates can be driven by the second lead screw to move toward each other, thereby facilitating the adjustment of the distance between the upper and lower electric heating plates and the materials, and further realizing the heating and drying of materials at different temperatures without adjusting the temperature of the electric heating plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second perspective;

[0018] Figure 3 This is a diagram showing the internal structure of the electric oven body of the present utility model.

[0019] In the figure: 1. Electric oven body; 2. Movable bracket; 3. Fixed bracket; 4. Conveyor roller; 5. Conveyor belt; 6. Stable bracket; 7. Screw; 8. Adjustment handle; 9. Pulley; 10. Hot air circulation hood; 11. Hot air circulation pipe; 12. Blower; 13. Dehumidifier; 14. Guide rail; 15. Upper heating plate; 16. Upper heating plate; 17. Second lead screw; 18. Heating rod; 19. First slider; 20. Second slider; 21. Limit rod; 22. Guide hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, a hot air circulation tunnel electric oven comprises an electric oven body 1, wherein a fixed bracket 3 and a movable bracket 2 are respectively provided at both ends of the electric oven body 1, and a conveying roller 4 is rotatably provided on the upper ends of the fixed bracket 3 and the movable bracket 2, and a conveyor belt 5 is wound between the two conveying rollers 4. A stable bracket 6 is provided on one side of the lower end of the electric oven body 1, and the movable bracket 2 and the stable bracket 6 are threadedly connected by a first screw. The first screw includes a screw 7 rotatably arranged on the upper middle part of the stable bracket 6, and the middle part of the lower end of the movable bracket 2 is threadedly connected to the screw 7. An adjusting handle 8 and a locking bolt are provided at one end of the screw 7, so that the movable bracket 2 can be adjusted to move laterally by rotating the first screw, so that the spacing between the two conveying rollers 4 can be adjusted, and then the tightness of the conveyor belt 5 can be adjusted to meet the needs of conveyor belt 5 with different tightness for conveying materials for drying and use, and the tightness adjustment is convenient and quick.

[0022] like Figure 1 and Figure 3As shown, in order to adjust the distance between the upper and lower electric heating plates 15 and the material, an upper and lower electric heating plates 15, 16 are further provided inside the electric oven body 1, and electric heating rods 18 are provided inside the upper and lower electric heating plates 15, 16, and the upper and lower electric heating plates 15, 16 are adjusted by moving toward each other through a first slider 19 and a second lead screw 17. Two opposite sets of external threads are provided on the outer sides of the second lead screw 17 at both ends, and the upper and lower first sliders 19 are respectively threadedly connected with the two opposite external threads. Second sliders 20 are also provided on both sides of the upper and lower electric heating plates 15, 16, and the second slider 20 is slidably arranged with the limit rod 21 inside the electric oven body 1, so that the upper and lower electric heating plates 15, 16 can be driven by the second lead screw 17 to move toward each other for adjustment, thereby facilitating the adjustment of the distance between the upper and lower electric heating plates 15, 16 and the material, and then realizing the heating and drying of the material at different temperatures without adjusting the temperature of the electric heating plates.

[0023] like Figure 2 and Figure 3 As shown, in order to recycle the hot air, a hot air circulation cover 10 is provided in the middle of both sides of the electric oven body 1, and a hot air circulation pipe 11 is connected between the two hot air circulation covers 10. A blower 12 and a dehumidifier 13 are provided at the upper end of the hot air circulation pipe 11. A filter is also provided on the hot air circulation pipe 11, so that the hot air inside the electric oven body 1 can be horizontally transferred and reused, which is beneficial to improving the drying efficiency.

[0024] like Figure 1 and Figure 2 As shown, in order to improve the stability of the lateral adjustment of the movable bracket 2, a guide slide rail 14 is further provided between the stable bracket 6 and the electric oven body 1, and the two sides of the lower end of the movable bracket 2 are slidably arranged with the guide slide rail 14 through the guide holes 22, which is used to slide and guide the movable bracket 2 during lateral adjustment, which is beneficial to improving the stability of the movement adjustment of the movable bracket 2, and pulleys 9 are further provided on the lower sides of both ends of the movable bracket 2 to further improve the stability of the lateral adjustment of the movable bracket 2.

[0025] The working principle and usage process of the present invention are as follows: when in use, an upper electric heating plate 15 and a lower electric heating plate 16 are provided inside the electric oven body 1, and electric heating rods 18 are provided inside the upper and lower electric heating plates 15, 16, so that the materials conveyed on the conveyor belt 5 can be heated and dried simultaneously in the upper and lower directions, which is beneficial to improving the uniformity of drying, and the upper and lower electric heating plates 15 and 16 are adjusted to move toward each other by the first slider 19 and the second lead screw 17, and the upper and lower electric heating plates 15 and 16 are adjusted to move toward each other by the first slider 19 and the second lead screw 17, so that the upper and lower electric heating plates 15, 16 can be driven to move toward each other by the second lead screw 17, thereby facilitating the adjustment of the distance between the upper and lower electric heating plates 15, 16 and the materials, and then realizing the heating and drying of materials at different temperatures without adjusting the temperature of the electric heating plates.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hot air circulation tunnel electric oven, comprising an electric oven body (1), characterized in that: The electric oven body (1) is provided with a fixed bracket (3) and a movable bracket (2) at both ends, and a conveying roller (4) is rotatably provided on the upper ends of the fixed bracket (3) and the movable bracket (2), and a conveyor belt (5) is wound between the two conveying rollers (4). A stable bracket (6) is provided on one side of the lower end of the electric oven body (1), and the movable bracket (2) and the stable bracket (6) are connected by a first screw thread. An upper electric heating plate (15) and a lower electric heating plate (16) are provided inside the electric oven body (1), and the upper electric heating plate (15) and the lower electric heating plate (16) are adjusted by moving toward each other through a first slider (19) and a second screw (17).

2. The hot air circulation tunnel electric oven according to claim 1, characterized in that: Hot air circulation covers (10) are further provided in the middle of both sides of the electric oven body (1), and a hot air circulation pipe (11) is connected between the two hot air circulation covers (10).

3. The hot air circulation tunnel electric oven according to claim 2, characterized in that: A blower (12) and a dehumidifier (13) are provided at the upper end of the hot air circulation pipe (11), and a filter is also provided on the hot air circulation pipe (11).

4. The hot air circulation tunnel electric oven according to claim 1, characterized in that: The first screw comprises a screw (7) rotatably arranged in the middle of the upper portion of the stable bracket (6); the middle portion of the lower end of the movable bracket (2) is threadedly connected to the screw (7); one end of the screw (7) is provided with an adjustment handle (8) and a locking bolt.

5. The hot air circulation tunnel electric oven according to claim 4, characterized in that: A guide rail (14) is further provided between the stable support (6) and the electric oven body (1), and both sides of the lower end of the movable support (2) are slidably arranged with the guide rail (14) through guide holes (22), and pulleys (9) are further provided on the lower sides of both ends of the movable support (2).

6. The hot air circulation tunnel electric oven according to claim 1, characterized in that: Two opposite sets of external threads are provided on the outer sides of both ends of the second lead screw (17), and the upper and lower first sliding blocks (19) are respectively threadedly connected to the two opposite external threads.

7. The hot air circulation tunnel electric oven according to claim 1, characterized in that: Second sliders (20) are also provided on both sides of the upper electric heating plate (15) and the lower electric heating plate (16), and the second sliders (20) are slidably arranged with the limiting rods (21) inside the electric oven body (1).

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