Improved tunnel type hot air circulation tunnel furnace

Abstract

The utility model provides an improved tunnel type hot air circulation tunnel furnace which comprises a furnace body base, a furnace body top shell is fixedly installed at the top end of the furnace body base, a heating box is fixedly installed on the inner wall of the top of the furnace body base, three outer ring pipelines are fixedly installed at the top end of the heating box, and inner ring pipelines are fixedly installed on the inner side walls of the three outer ring pipelines. The inner ring pipeline is communicated with the outer side of the top end of the outer ring pipeline, and the outer side of the top end of the outer ring pipeline is communicated with an input pipeline. The high-temperature air conveying device has the beneficial effects that after external high-temperature air is transitionally input through the arranged outer ring pipeline, the high-temperature air can be input into the furnace body top shell from the bottom end of the inner ring pipeline under the action of the bottom pipeline; and meanwhile, the top pipeline penetrates through the inner ring pipeline to directly input the high-temperature air into the inner side of the top shell of the furnace body, so that the outer ring pipeline can further improve the utilization rate of the high temperature while inputting the high-temperature air, and then the hot air circulation effect in the whole tunnel furnace and the utilization rate of the high-temperature air are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel furnaces, and particularly relates to an improved tunnel-type hot air circulation tunnel furnace. Background Art

[0002] A tunnel furnace is a tunnel-type mechanical equipment that completes food baking through heat conduction, convection, and radiation. Currently, the following common defects mainly exist in tunnel furnaces:

[0003] When a traditional tunnel furnace is in use, due to its large internal space, only by inputting high temperature as a whole into the interior of the tunnel furnace, it is relatively easy to cause rapid heat dissipation, and it is necessary to continuously input high temperature into its interior, resulting in waste of high-temperature air. Moreover, the traditional tunnel furnace cannot efficiently perform hot air circulation treatment on the high-temperature gas inside it, thereby reducing the overall effect of the tunnel furnace on items. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an improved tunnel-type hot air circulation tunnel furnace, aiming to solve the problem that the high-temperature gas inside it cannot be efficiently subjected to hot air circulation treatment in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved tunnel-type hot air circulation tunnel furnace includes a furnace body base. A furnace body top shell is fixedly installed at the top end of the furnace body base. A heating box is fixedly installed on the top inner wall of the furnace body base. Three outer ring pipes are fixedly installed at the top end of the heating box. An inner ring pipe is fixedly installed on the inner side wall of the three outer ring pipes. An input pipe is communicated with the outer side of the top end of the outer ring pipe. A top pipe is communicated with the top end of the outer ring pipe. The outer side of the bottom end of the top pipe is fixedly connected with the inner side wall of the inner ring pipe. A bottom pipe is communicated between the inner side of the bottom end of the outer ring pipe and the outer side of the bottom end of the inner ring pipe. An output pipe is communicated with the inner side wall of the inner ring pipe.

[0007] As a preferred embodiment of the utility model, the outer side of the bottom end of the outer ring pipe is communicated with the top end of the heating box. A top cover and a semi-ring pipe are respectively fixedly installed on the outer side of the top end and the outer side of the bottom end of the outer ring pipe. The outer side of the bottom end of the semi-ring pipe is communicated with the top end of the heating box.

[0008] As a preferred embodiment of the utility model, a protection column is fixedly installed on the inner side wall of the heating box. A main rotating rod is rotatably connected inside the protection column. Three guide rods are rotatably connected to the top end of the protection column. Tapered gears are fixedly installed on the outer sides of the bottom ends of the three guide rods and the main rotating rod. A first motor is fixedly installed at one end of the main rotating rod.

[0009] As a preferred embodiment of the present utility model, electric heating wires are provided at both ends of the protective column, and both ends of the two electric heating wires are fixedly connected to the inner side wall of the heating box.

[0010] As a preferred embodiment of the present utility model, two transmission plates are fixedly installed inside the top of the furnace body base. A number of transmission rods are rotatably connected between the two transmission plates. The other ends of the number of transmission rods are fixedly installed with linkage gears. A chain is sleeved outside the linkage gears. One end of one of the transmission rods is fixedly installed with a second motor.

[0011] As a preferred embodiment of the present utility model, a switch panel is fixedly installed outside the furnace body base. A first motor switch, an electric heating wire switch, and a second motor switch are respectively fixedly installed on the surface of the switch panel. The first motor, the electric heating wire, and the second motor are respectively electrically connected to an external power supply through the first motor switch, the electric heating wire switch, and the second motor switch.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1) After the external high-temperature gas is transitionally input through the provided outer ring pipeline, the high-temperature air can be input from the bottom end of the inner ring pipeline to the inside of the furnace body top shell through the action of the bottom pipeline, and at the same time, the high-temperature air is directly input to the inside of the furnace body top shell through the top pipeline passing through the inner ring pipeline. This enables the outer ring pipeline to further improve the utilization rate of high temperature while inputting high-temperature air, thereby improving the hot air circulation effect inside the overall tunnel furnace and the utilization rate of high-temperature air.

[0014] 2) Through the storage and circulating transition function of the provided heating box for the air used inside the tunnel furnace, the air entering the heating box can be heated by the electric heating wire and then re-enter the inner and outer ring pipelines and be input into the tunnel furnace for recycling. Also, through the rotation of the provided guide rod at the bottom end of the outer ring pipeline, the circulating effect of the heating box on the air can be improved, thereby improving the use effect of the overall tunnel furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the internal structural schematic diagram of the furnace body base of the present utility model;

[0018] Figure 3 Schematic diagram of the internal structure of the heating box of the present utility model;

[0019] Figure 4 Schematic diagram of the internal structure of the inner ring pipeline of the present utility model;

[0020] Figure 5 Schematic diagram of the internal structure of the drive plate of the present utility model.

[0021] In the figure: 1, furnace body base; 2, furnace body top shell; 3, heating box; 4, outer ring pipeline; 5, inner ring pipeline; 6, input pipeline; 7, top pipeline; 8, bottom pipeline; 9, output pipeline; 10, top cover; 11, semi-ring pipeline; 12, protection column; 13, main rotating rod; 14, guide rod; 15, bevel gear; 16, first motor; 17, electric heating wire; 18, drive plate; 19, drive rod; 20, linkage gear; 21, chain; 22, second motor. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides the following technical solutions: An improved tunnel-type hot air circulation tunnel furnace, including a furnace body base 1, a furnace body top shell 2 is fixedly installed at the top end of the furnace body base 1, a heating box 3 is fixedly installed on the inner wall of the top of the furnace body base 1, three outer ring pipelines 4 are fixedly installed at the top end of the heating box 3, an inner ring pipeline 5 is fixedly installed on the inner side wall of the three outer ring pipelines 4, an input pipeline 6 is communicated with the outer side of the top end of the outer ring pipeline 4, a top pipeline 7 is communicated with the top end of the outer ring pipeline 4, the outer side of the bottom end of the top pipeline 7 is fixedly connected with the inner side wall of the inner ring pipeline 5, a bottom pipeline 8 is communicated between the inner side of the bottom end of the outer ring pipeline 4 and the outer side of the bottom end of the inner ring pipeline 5, and an output pipeline 9 is communicated with the inner side wall of the inner ring pipeline 5.

[0024] During specific use, when using this tunnel furnace, first, high-temperature air can be input through the top end of the outer ring pipe 4. At this time, the high-temperature air at the top end of the outer ring pipe 4 can directly enter the tunnel furnace through the top pipe 7, while the remaining large amount of air moves to the bottom end of the outer ring pipe 4. Then, through the action of the bottom pipe 8, this part of the air flow is input into the inner ring pipe 5. At this time, high-temperature gas can be input into the tunnel furnace through the output pipe 9 on the inner ring pipe 5. At this time, the temperature of the high-temperature air input by the output pipe 9 and the top pipe 7 becomes more uniform, and the used air can be input into the heating box 3, heated by the heating box 3, and then input into the inner ring pipe 5 again through the bottom end of the outer ring, thereby improving the overall circulation effect of the tunnel furnace during use and the utilization rate of air.

[0025] Preferably, the outer side of the bottom end of the outer ring pipe 4 is interconnected with the top end of the heating box 3. The outer sides of the top end and the bottom end of the outer ring pipe 4 are respectively fixedly installed with a top cover 10 and a semi-circular pipe 11. The outer side of the bottom end of the semi-circular pipe 11 is interconnected with the top end of the heating box 3.

[0026] During specific use, when the air inside the tunnel furnace needs to be sent into the heating box 3, through the action of the semi-circular pipe 11 on both sides of the outer ring pipe 4, the used air can be introduced through the openings at the top end of the semi-circular pipe 11 and discharged through the openings at both sides of the bottom end into the heating box 3 for heating and circulation treatment.

[0027] Preferably, a protective column 12 is fixedly installed on the inner side wall of the heating box 3. A main rotating rod 13 is rotatably connected inside the protective column 12. Three guide rods 14 are rotatably connected to the top end of the protective column 12. Tapered gears 15 are fixedly installed on the outer sides of the bottom ends of the three guide rods 14 and the main rotating rod 13. One end of the main rotating rod 13 is fixedly installed with a first motor 16.

[0028] During specific use, when the gas inside the heating box 3 needs to be input into the outer ring pipe 4 during heating, the first motor 16 can be used to drive the main rotating rod 13 to rotate inside the protective column 12, and through the action of the tapered gears 15, the main rotating rod 13 drives the guide rods 14 to rotate at the same speed on the protective column 12, so as to accelerate the inflow of the heated air inside the heating box 3 into the inner ring pipe 5 through the action of the guide rods 14.

[0029] Preferably, electric heating wires 17 are provided at both ends of the protective column 12, and both ends of the two electric heating wires 17 are fixedly connected to the inner side wall of the heating box 3.

[0030] During specific use, after the air is sent into the heating box 3, through the heating action of the electric heating wires 17, this part of the air can be further heated, improving the circulation effect of the hot air inside the tunnel furnace.

[0031] Preferably, two drive plates 18 are fixedly installed on the inner side of the top of the furnace body base 1. A number of drive rods 19 are rotatably connected between the two drive plates 18. The other ends of the number of drive rods 19 are fixedly installed with linkage gears 20. A chain 21 is sleeved outside the linkage gears 20. One end of one of the drive rods 19 is fixedly installed with a second motor 22.

[0032] During specific use, when it is necessary to transfer external items into the tunnel furnace, the second motor 22 can drive the drive rods 19 to rotate between the drive plates 18 under the action of the linkage gears 20 and the chain 21, so that the items can be input into the tunnel furnace through the drive rods 19.

[0033] Preferably, a switch panel is fixedly installed on the outside of the furnace body base 1. The surface of the switch panel is fixedly installed with a first motor 16 switch, an electric heating wire 17 switch, and a second motor 22 switch respectively. The first motor 16, the electric heating wire 17, and the second motor 22 are respectively electrically connected to an external power supply through the first motor 16 switch, the electric heating wire 17 switch, and the second motor 22 switch.

[0034] During specific use, the equipment switches set on the switch panel facilitate the control of the improved tunnel-type hot air circulation tunnel furnace.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An improved tunnel-type hot air circulation tunnel furnace, including a furnace body base (1), characterized in that, At the top end of the furnace body base (1), a furnace body top shell (2) is fixedly installed. On the top inner wall of the furnace body base (1), a heating box (3) is fixedly installed. At the top end of the heating box (3), three outer ring pipes (4) are fixedly installed. On the inner side walls of the three outer ring pipes (4), an inner ring pipe (5) is fixedly installed. The outer side of the top end of the outer ring pipe (4) is communicated with an input pipe (6). The top end of the outer ring pipe (4) is communicated with a top pipe (7). The outer side of the bottom end of the top pipe (7) is fixedly connected to the inner side wall of the inner ring pipe (5). Between the inner side of the bottom end of the outer ring pipe (4) and the outer side of the bottom end of the inner ring pipe (5), a bottom pipe (8) is communicated. The inner side wall of the inner ring pipe (5) is communicated with an output pipe (9).

2. An improved tunnel-type hot air circulation tunnel furnace according to claim 1, characterized in that: The outer side of the bottom end of the outer ring pipe (4) is communicated with the top end of the heating box (3). At the outer side of the top end and the outer side of the bottom end of the outer ring pipe (4), a top cover (10) and a semi-circular pipe (11) are respectively fixedly installed. The outer side of the bottom end of the semi-circular pipe (11) is communicated with the top end of the heating box (3).

3. An improved tunnel-type hot air circulation tunnel furnace according to claim 1, characterized in that: On the inner side wall of the heating box (3), a protective column (12) is fixedly installed. Inside the protective column (12), a main rotating rod (13) is rotatably connected. At the top end of the protective column (12), three guide rods (14) are rotatably connected. At the bottom ends of the three guide rods (14) and on the outer side of the main rotating rod (13), bevel gears (15) are fixedly installed. At one end of the main rotating rod (13), a first motor (16) is fixedly installed.

4. An improved tunnel-type hot air circulation tunnel furnace according to claim 3, characterized in that: At both ends of the protective column (12), electric heating wires (17) are provided. The two ends of the two electric heating wires (17) are fixedly connected to the inner side wall of the heating box (3).

5. An improved tunnel-type hot air circulation tunnel furnace according to claim 4, characterized in that: On the top inner side of the furnace body base (1), two transmission plates (18) are fixedly installed. Between the two transmission plates (18), a number of transmission rods (19) are rotatably connected. At the other ends of the number of transmission rods (19), linkage gears (20) are fixedly installed. A chain (21) is sleeved on the outer side of the linkage gear (20). At one end of one of the transmission rods (19), a second motor (22) is fixedly installed.

6. An improved tunnel-type hot air circulation tunnel furnace according to claim 5, characterized in that: On the outer side of the furnace body base (1), a switch panel is fixedly installed. On the surface of the switch panel, a first motor switch, an electric heating wire switch and a second motor switch are respectively fixedly installed. The first motor (16), the electric heating wire (17) and the second motor (22) are respectively electrically connected to an external power supply through the first motor switch, the electric heating wire switch and the second motor switch.

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