Tunnel furnace

Abstract

The utility model discloses a tunnel furnace which comprises a machine frame, a first furnace body, a second furnace body, a second furnace body, a third furnace body and a fourth furnace body. The second furnace body is arranged on the rack, is adjacent to the first furnace body and is used for cooling the baked materials; the conveying assembly is arranged on the rack, the conveying assembly comprises a first conveying section and a second conveying section which are adjacently arranged, the first conveying section is arranged corresponding to the first furnace body, and the second conveying section is arranged corresponding to the second furnace body. According to the technical scheme, the problem that the cooling effect is poor after an aluminum plate is baked can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal piece baking, in particular to a tunnel furnace. Background Art

[0002] In order to improve the quality of aluminum products, aluminum products need to be baked before processing and then cooled. Existing aluminum products are usually baked in a tunnel furnace, and most of the cooling is done by air cooling or natural cooling.

[0003] However, when processing aluminum products, the existing tunnel furnace uses a single conveying equipment to convey the aluminum products. That is to say, the single conveying equipment conveys the aluminum products to the baking section and the cooling section. Since the single conveying equipment is also baked when passing through the baking section, when the conveying equipment enters the cooling section, the cooling section not only needs to cool the aluminum products, but also needs to cool down the conveying equipment. Since the aluminum products are placed on the conveying equipment, the heat is more concentrated on the side of the aluminum products close to the conveying equipment, resulting in poor cooling effect on this side. Utility Model Content

[0004] The main purpose of the utility model is to provide a tunnel furnace, aiming to solve the problem of poor cooling effect of aluminum plates after baking.

[0005] In order to achieve the above-mentioned purpose, the tunnel furnace proposed by the utility model comprises:

[0006] frame:

[0007] A first furnace body is arranged on the frame and is used for baking the material;

[0008] a second furnace body, disposed on the frame and adjacent to the first furnace body, for cooling the baked material; and

[0009] A conveying assembly is arranged on the frame, and the conveying assembly includes a first conveying section and a second conveying section which are adjacently arranged. The first conveying section is arranged corresponding to the first furnace body, and the second conveying section is arranged corresponding to the second furnace body.

[0010] Optionally, the first furnace body includes a plurality of first furnace covers, which are distributed one by one along the conveying direction of the first conveying section, a heat insulating bracket is arranged between two of the first furnace covers, and a baking component is arranged inside the first furnace cover.

[0011] Optionally, a first heating element is provided in the thermal insulation bracket.

[0012] Optionally, a waste discharge pipe is provided on the first furnace body;

[0013] The tunnel furnace includes a heat recovery component, which includes a first filter, an air intake pipe, an air return pipe and a fan. One end of the air intake pipe is connected to the exhaust pipe, and the other end is connected to the first filter. One end of the air return pipe is connected to the first filter, and the other end is connected to the first furnace body. The fan is used to draw the gas in the first furnace body into the air intake pipe, filter it through the first filter, and discharge it into the first furnace body through the air return pipe.

[0014] Optionally, one end of the first conveying section close to the second furnace body is located inside the second furnace body.

[0015] Optionally, the second furnace body includes multiple second furnace covers, each of which is provided with multiple groups of air outlets, and each of which is provided with air supply ports and return air ports on the outside, and the air supply ports and the return air ports are connected to the multiple groups of air outlets.

[0016] Optionally, a plurality of waste hoppers are arranged in the second furnace cover, and the plurality of waste hoppers and the plurality of air outlets are symmetrically arranged about the second conveying section.

[0017] Optionally, a fan is further provided outside the second furnace body away from the first furnace body.

[0018] Optionally, exhaust hoods are provided at the inlet and outlet of the first furnace body.

[0019] Optionally, the conveying assembly further includes a cleaning member, and the cleaning member is used to clean the first conveying section.

[0020] The technical solution of the utility model adopts the arrangement of the first furnace body corresponding to the first conveying section and the second furnace body corresponding to the second conveying section, so that when the second furnace body cools the baked material, the cooling of the first conveying section can be reduced, and the energy consumption generated by the second furnace body when cooling the baked material is reduced. At the same time, under the action of the second conveying section, the heat generated by the baked material can be absorbed. The side of the baked material close to the second conveying section has a good heat dissipation effect, which makes the heat dissipation effect of the baked material faster, thereby solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1This is a schematic structural diagram of an embodiment of a tunnel furnace of the utility model;

[0023] Figure 2 This is a structural schematic diagram of another embodiment of the tunnel furnace of the utility model;

[0024] Figure 3 Based Figure 1 A schematic structural diagram of an embodiment of a first furnace cover;

[0025] Figure 4 Based Figure 1 A structural schematic diagram of another embodiment of the first furnace cover;

[0026] Figure 5 for Figure 1 A partial enlarged view of the middle A;

[0027] Figure 6 for Figure 3 A partial enlarged view of point B in the middle;

[0028] Figure 7 for Figure 1 A partial enlarged view of point C in the middle;

[0029] Figure 8 for Figure 1 A partial enlarged view of point D in the middle.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] The utility model provides a tunnel furnace which is used for baking metal parts, and is particularly suitable for baking aluminum plate metal parts for automobile interior decoration.

[0039] In one embodiment of the utility model, the tunnel furnace includes a frame 100, a first furnace body 200, a second furnace body 300, a conveying assembly 400 and a heat recovery assembly 500; the frame 100: the first furnace body 200 is arranged on the frame 100, and is used to bake the material, wherein one end of the first furnace body 200 is an inlet, and the other end is an outlet, wherein in this embodiment, the first furnace body 200 does not limit how the material is baked, wherein hot air baking can be adopted, and a heating rod can also be adopted to heat the inside of the first furnace body 200, and the first furnace body 200 is heated by heating the first furnace body 200. 00 for baking; the second furnace body 300 is arranged on the frame 100 and is adjacent to the first furnace body 200 for cooling the baked material, one end of the second furnace body 300 is an inlet, and the other end is an outlet, and the inlet of the second furnace body 300 is adjacent to the outlet of the first furnace body 200, wherein in this embodiment, the second furnace body 300 is not limited in how to cool the baked material, wherein air cooling can be adopted, and the temperature in the second furnace body 300 can also be lowered to achieve cooling of the baked material; the conveying component 4 00 is arranged on the frame 100, the conveying assembly 400 includes a first conveying section 410 and a second conveying section 420 arranged adjacent to each other, the first conveying section 410 is arranged corresponding to the first furnace body 200, and the second conveying section 420 is arranged corresponding to the second furnace body 300, wherein the first conveying section 410 and the second conveying section 420 are both configured as Teflon mesh belt conveying assemblies 400, specifically, the Teflon mesh belt conveying assembly 400 includes a Teflon mesh belt, a mesh belt 411 motor 241, a mesh belt 411 roller and other structures, in the first conveying section Under the structure of the first conveying section 410 and the second conveying section 420, when the second furnace body 300 cools the baked material, the cooling of the first conveying section 410 can be reduced, and the energy consumption generated by the second furnace body 300 when cooling the baked material is reduced. At the same time, under the action of the second conveying section 420, the heat generated by the baked material can be absorbed. The side of the baked material close to the second conveying section 420 has a good heat dissipation effect, which makes the heat dissipation effect of the baked material faster, thereby solving the technical problems existing in the prior art, such as Figure 1 shown.

[0040] The technical solution of the utility model adopts the arrangement of the first furnace body 200 corresponding to the first conveying section 410 and the arrangement of the second furnace body 300 corresponding to the second conveying section 420, so that when the second furnace body 300 cools the baked material, the cooling of the first conveying section 410 can be reduced, and the energy consumption generated by the second furnace body 300 when cooling the baked material is reduced. At the same time, under the action of the second conveying section 420, the heat generated by the baked material can be absorbed, and the side of the baked material close to the second conveying section 420 has a good heat dissipation effect, which makes the heat dissipation effect of the baked material faster, thereby solving the technical problems existing in the prior art.

[0041] In one embodiment, reference Figure 3, wherein the first furnace body 200 may adopt the following structure, wherein the first furnace body 200 includes a plurality of first furnace covers 210, wherein two circulation channels 220 and a baking area 230 are arranged in the first furnace cover 210, wherein the two circulation channels 220 are both located above the baking area 230, and the two circulation channels 220 are spaced apart from each other, and the two circulation channels 220 are both connected to the baking area 230, wherein the baking area 230 is located at the bottom of the first furnace cover 210, so that the material on the first conveying section 410 can pass through the baking area 230 when passing through the first furnace cover 210, so that the material on the first conveying section 410 is baked, and the plurality of first furnace covers 210 are arranged along the first conveying section 4 10 are distributed one by one in the conveying direction, and a heat insulation bracket 700 is arranged between the two first furnace covers 210, wherein the heat insulation bracket 700 is to avoid the small interval between the two first furnace covers 210, resulting in the heat between the two first furnace covers 210 being more concentrated, and to avoid the deformation of the adjacent parts of the two first furnace covers 210 caused by long-term use. At the same time, the heat insulation bracket 700 includes an outer shell and an inner liner, the outer shell is made of a high-temperature alloy, the inner liner is a heat-insulating cotton, and the inner liner is filled inside the outer shell, wherein the heat-insulating cotton is configured as aluminum silicate cotton. At the same time, in order to improve the sealing effect between the first furnace cover 210 and the outer shell, a sealing strip 720 is also arranged between the outer shell and the first furnace cover 210 to improve the sealing between the two. To avoid heat leakage, a baking element 240 is provided in the first furnace cover 210; in the present embodiment, two baking elements 240 are provided in each first furnace cover 210, and the two baking elements 240 are provided one by one corresponding to the two circulation channels 220, wherein the baking element 240 includes a second heating element 243 and a third heating element 244, the second heating element 243 is located above the third heating element 244, a second filter element 245 is provided between the second heating element 243 and the third heating element 244, the second heating element 243, the third heating element 244 and the second filter element 245 are all installed in the first furnace cover 210, wherein the second heating element 243, the third heating element 244 and the second filter element 245 It can be fixed in the first furnace cover 210 by screw attachment. Specifically, the number of the third heating elements 244 is multiple, and the multiple third heating elements 244 are evenly distributed along the conveying direction of the first conveying section 410. At the same time, a wind wheel 242 is arranged on one side of the second heating element 243. A motor 241 for driving the wind wheel 242 to rotate is installed on the outside of the first furnace cover 210. The wind wheel 242 rotates to make the gas flow in the circulation channel 220. When the gas passes through the second heating element 243, it is converted into hot air. At this time, the hot air flows along the circulation channel 220, passes through the second filter element 245, and enters the baking area 230. At this time, the hot air can bake the materials entering the baking area 230.In this embodiment, the second heating element 243 is configured as a heating tube, the third heating element 244 is configured as a gold-plated infrared lamp, the second filter element 245 is configured as a high temperature resistant filter, wherein the high temperature resistant filter includes filter fiber cotton and a frame and other structures, and the wind wheel 242 is configured as a stainless steel multi-wing centrifugal wind wheel 242. At the same time, in this embodiment, the hot air can be circulated under the action of the circulation channel 220, so that the tunnel furnace has a better baking effect on the material, wherein the circulation method of the hot air is as follows; Figure 3 In other embodiments, the baking member 240 may also be other structures, such as a single heating tube or multiple heating tubes, or other cyclic heating methods, which are not limited here.

[0042] In one embodiment, reference Figure 7 A first heating element 710 is arranged in the insulation bracket 700. Since the insulation bracket 700 is arranged between the two first furnace covers 210, in order to avoid the temperature of the material passing under the insulation bracket 700 being more appropriate, a first heating element 710 is arranged in the insulation bracket 700, wherein the first heating element 710 is located under the inner tank. At the same time, the first heating element 710 is configured as a gold-plated infrared lamp. Under the action of the first heating element 710, when the material passes under the insulation bracket 700, it can be ensured that the material is baked, thereby improving the baking effect of the tunnel furnace, so that the baking temperature of each section in the first furnace body 200 can be guaranteed, and further improving the use effect of the device.

[0043] In one embodiment, reference Figure 4 , one side of the first furnace cover 210 is hinged to the frame 100, and a lifting cylinder is provided on the side of the frame 100 opposite to the hinge, through which the first furnace cover 210 can be rotated around the hinge, and the first furnace cover 210 can be opened; at the same time, both sides of the first furnace cover 210 parallel to the conveying direction of the first conveying section 410 are provided with insulation layers 211, wherein the insulation layer 211 is configured as an air insulation layer 211, and at the same time, a thermal insulation layer 260 is also provided on the frame 100, wherein the insulation layer 260 is located below the first conveying section 410, that is, the insulation layer 260 is located below the Teflon mesh belt, and the insulation layer 260 can make the first furnace cover 210 have a better insulation effect, wherein the insulation layer 260 is configured as a U-shaped structure, and both sides of the U-shaped structure are provided with insulation cotton 270, and the specific insulation cotton 270 is aluminum foil insulation cotton 270, and the insulation layer 260 is further embedded in the top of the frame 100.

[0044] In one embodiment, reference Figure 1 , Figure 6The first furnace body 200 is provided with a waste pipe 250, wherein the waste pipe 250 is provided on the first furnace cover 210. Since there are multiple first furnace covers 210, there are also multiple waste pipes 250 at this time. The multiple waste pipes 250 correspond one to one with the multiple first furnace covers 210. At the same time, the waste pipe 250 is connected with two circulation channels 220 in the first furnace cover 210. A first control valve 280 is provided at the connection between the circulation channel 220 and the waste pipe 250. The first control valve 280 is used to control the flow rate of the waste gas in the circulation channel 220 when it is discharged into the waste pipe 250. A second control valve is further provided in the exhaust pipe 250, and the second control valve is used to control the flow rate of the exhaust gas in the exhaust pipe 250; the tunnel furnace includes a heat recovery component 500, and the heat recovery component 500 includes a first filter element 520, an air intake pipe 510, a return air pipe and a fan 530, one end of the air intake pipe 510 is connected to the exhaust pipe 250, and the other end is connected to the first filter element 520, one end of the return air pipe is connected to the first filter element 520, and the other end is connected to the first furnace body 200, and the specific return air pipe is connected to the first furnace cover 210, and the first The furnace cover 210 is provided with a pipe 290, which is connected to the return air pipe. The fan 530 is used to draw the gas in the first furnace body 200 into the inlet pipe 510, which is filtered by the first filter element 520 and discharged into the first furnace body 200 through the return air pipe. In this embodiment, during the baking process of the material, that is, during the baking process of the aluminum plate, a certain amount of waste gas will be generated on the surface of the aluminum plate. The waste gas generated at this time will first contact with the second filter element 245. At this time, the second filter element 245 can absorb materials such as ink in the waste gas. At this time, other waste gases can be circulated. The first control valve 280 in the flow channel 220 enters the exhaust pipe 250. At this time, under the action of the fan 530, the exhaust gas can be sucked into the intake pipe 510, and then the exhaust gas passes through the first filter element 520 to filter the exhaust gas. The exhaust gas filtered by the first filter element 520 enters the return air pipe, and then is transported into the first furnace body 200 by the return air pipe. The specific return air pipe is connected to the first furnace cover 210. Since there are multiple first furnace covers 210, the number of return air pipes is also multiple. At the same time, in this embodiment, the second filter element 245 is configured as a high temperature resistant filter.

[0045] In one embodiment, reference Figure 1One end of the first conveying section 410 close to the second furnace body 300 is located in the second furnace body 300. Under this structure, on the one hand, it is convenient for materials to enter the second conveying section 420 from the first conveying section 410. At the same time, one end of the first conveying section 410 is located in the second furnace body 300. Compared with locating one end of the second conveying section 420 in the first furnace body 200, it can avoid that the second conveying section 420 is affected by the first furnace body 200, resulting in a higher temperature of the second conveying section 420 itself and a poor heat dissipation effect.

[0046] In one embodiment, reference Figure 1 , Figure 8 The second furnace body 300 includes a plurality of second furnace covers 310, each of which is provided with a plurality of groups of air outlets 320, and the second furnace cover 310 is provided with two air outlet hoods, the air outlet 320 is inside the air outlet hood, and each of the second furnace covers 310 is provided with an air supply port 340 and a return air port 330 outside, the air supply port 340 and the return air port 330 are both connected to the plurality of groups of air outlets 320, wherein the air supply port 340 and the return air port 330 are both connected to the air outlet hood through a pipeline, and under the action of the air outlet hood, the blown wind can be blown more concentratedly to the second conveying section 420, and the blown wind can be blown more concentratedly to the baked material, so that the material is quickly cooled; in this embodiment, the air supply port 340 is used for inputting a cooling medium, wherein the cooling medium can be cold wind, and a combined air conditioner is also provided on one side of the second furnace body 300, wherein the air supply port 340 and the return air port 330 are both connected to the combined air conditioner.

[0047] In one embodiment, reference Figure 1 A plurality of waste hoppers 350 are arranged in the second furnace cover 310, and the plurality of waste hoppers 350 and the plurality of air outlets 320 are symmetrically arranged about the second conveying section 420. In this embodiment, the waste generated during the cooling process of the material can be collected under the action of the waste hoppers 350. At the same time, the second conveying section 420 with a mesh belt 411 structure is configured, and the waste generated during the cooling process of the material can enter the waste hopper 350 through the mesh belt 411.

[0048] In one embodiment, reference Figure 1 A fan 600 is also provided on the outside of the second furnace body 300 away from the first furnace body 200, that is, a fan 600 is provided at the outlet of the second furnace body 300, wherein the fan 600 is configured as a cooling axial flow large fan 600. Under this structure, the material coming out of the outlet of the second furnace body 300 can be further cooled to improve the cooling effect, and the mesh belt 411 on the second conveying section 420 can be dissipated. At the same time, the temperature at the outlet can be reduced, making it convenient for workers to take materials from the outlet of the second furnace body 300.

[0049] In one embodiment, reference Figure 1 The first furnace body 200 is provided with exhaust hoods at the inlet and outlet. In the present embodiment, under the action of the exhaust hood, the smoke generated when the first furnace body 200 bakes the material can be discharged outward through the exhaust hood, wherein the exhaust hood is connected to the negative pressure device, and the smoke can be effectively drawn out through the negative pressure.

[0050] In one embodiment, reference Figure 5 The conveying assembly 400 also includes a cleaning member 430, and the cleaning member 430 is used to clean the first conveying section 410, wherein the cleaning member 430 is configured as a dust-sticking roller, and the dust-sticking roller is used to remove dust from the mesh belt 411 in the first conveying section 410, thereby avoiding a lot of dust on the mesh belt 411, wherein the dust-sticking roller is arranged at the entrance of the first furnace body 200, and under this structure, when the temperature of the mesh belt 411 is reduced after circulation, the influence of the high temperature mesh belt 411 on the dust-sticking roller can be avoided.

[0051] In one embodiment, reference Figure 5 The first conveying section 410 also includes a mesh belt 411 correcting member 412, and the mesh belt 411 correcting member 412 is used to adjust the mesh belt 411 in the first conveying section 410. Under this structure, when the first furnace body 200 is relatively long, it can effectively prevent the mesh belt 411 from being displaced during use, for example, when the length of the first furnace body 200 is 20 meters.

[0052] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A tunnel furnace, characterized in that: include: frame: A first furnace body is arranged on the frame and is used for baking the material; A second furnace body, disposed on the frame and adjacent to the first furnace body, for cooling the baked material; as well as A conveying assembly is arranged on the frame, and the conveying assembly includes a first conveying section and a second conveying section which are adjacently arranged. The first conveying section is arranged corresponding to the first furnace body, and the second conveying section is arranged corresponding to the second furnace body.

2. The tunnel furnace according to claim 1, characterized in that: The first furnace body includes a plurality of first furnace covers, which are distributed one by one along the conveying direction of the first conveying section, a heat insulating bracket is arranged between two of the first furnace covers, and a baking component is arranged inside the first furnace cover.

3. The tunnel furnace according to claim 2, characterized in that: A first heating element is arranged in the thermal insulation bracket.

4. The tunnel furnace according to claim 1, characterized in that: The first furnace body is provided with a waste discharge pipe; The tunnel furnace includes a heat recovery component, which includes a first filter, an air intake pipe, an air return pipe and a fan. One end of the air intake pipe is connected to the exhaust pipe, and the other end is connected to the first filter. One end of the air return pipe is connected to the first filter, and the other end is connected to the first furnace body. The fan is used to draw the gas in the first furnace body into the air intake pipe, filter it through the first filter, and discharge it into the first furnace body through the air return pipe.

5. The tunnel furnace according to claim 1, characterized in that: One end of the first conveying section close to the second furnace body is located in the second furnace body.

6. The tunnel furnace according to claim 1, characterized in that: The second furnace body includes a plurality of second furnace covers, each of which is provided with a plurality of air outlets, and each of which is provided with an air supply port and an air return port on the outside, and the air supply port and the air return port are both connected to the plurality of air outlets.

7. The tunnel furnace according to claim 6, characterized in that: A plurality of waste hoppers are arranged in the second furnace cover, and the plurality of waste hoppers and the plurality of air outlets are symmetrically arranged about the second conveying section.

8. The tunnel furnace according to any one of claims 1 to 7, characterized in that: A fan is also provided outside the second furnace body away from the first furnace body.

9. The tunnel furnace according to any one of claims 1 to 7, characterized in that: The inlet and the outlet of the first furnace body are both provided with fume exhaust hoods.

10. The tunnel furnace according to any one of claims 1 to 7, characterized in that: The conveying assembly further includes a cleaning member, and the cleaning member is used for cleaning the first conveying section.

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