High temperature spiral conveying heating device and brazing furnace

Abstract

The present invention belongs to the technical field of industrial heating furnaces and relates to a high-temperature spiral conveying heating device and a brazing furnace, comprising a furnace body, a conveying device, a heating device, a spiral plate, a plurality of transmission shafts, and a bracket. The plurality of transmission shafts are mounted on the bracket and are hollow, parallel to the axis of the furnace body, and have a first cooling medium inlet and outlet at their shaft ends. Each transmission shaft is provided with a toggle wheel along its axial direction, and the toggle wheel toggle the conveyor belt to move on the spiral plate. The bracket is provided with a driving device for rotating the transmission shaft, and the bracket is provided with inner and outer ring pillars. The inner and outer ring pillars are hollow, and have a second cooling medium inlet and outlet at their ends. The inner and outer ring pillars and the plurality of transmission shafts are all wrapped with a heat insulation layer, so that the strength, rigidity, anti-oxidation and other properties of the transmission shaft and the bracket are improved. Ensuring that the two core components operate at a lower temperature solves the problems of structural stability, transmission reliability, and short service life of the above-mentioned equipment, and can reach a higher operating temperature range.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial heating furnaces, and in particular relates to a high-temperature spiral conveying heating device and a brazing furnace. Background Art

[0002] At present, the operating temperature of conventional spiral conveying heating furnaces is below 200°C. When the temperature exceeds 200°C, especially at high temperatures, the core components are affected by thermal deformation of the material, and their plasticity, strength, rigidity, oxidation resistance and other properties are reduced at high temperatures. The stability of the structure, reliability of the transmission system and service life cannot be guaranteed normally. Summary of the Invention

[0003] In order to solve the problems in the above-mentioned background technology, the present invention provides a high-temperature spiral conveying heating device and a brazing furnace, which have the advantages of ensuring that its core components always operate at a relatively low temperature (below 100°C) at high temperatures, solving the problems of structural stability, transmission system reliability, and short equipment service life of the above-mentioned equipment, and can achieve a higher operating temperature range.

[0004] On the one hand, the present invention provides a high-temperature spiral conveying and heating device, which is realized by the following technical solutions:

[0005] It includes a furnace body, a conveying device, a heating device and a spiral plate located in the furnace body, and also includes a bracket arranged in the furnace body and a plurality of transmission shafts rotatably arranged on the bracket. The spiral plate is arranged on the bracket, and the plurality of transmission shafts are arranged parallel to the axis of the furnace body. The transmission shaft is hollow and has a first cooling medium inlet and a first cooling medium outlet at its shaft end. Each of the transmission shafts is provided with a plurality of paddle wheels along its axial direction, and the paddle wheels are used to paddle the conveyor belt to move on the spiral plate. The bracket is provided with a driving device that drives the transmission shaft to rotate.

[0006] As a further explanation of the invention: the bracket includes an upper cover, a lower cover, a furnace body wall, a group of outer ring supports and a group of inner ring supports, a group of the inner ring supports, a group of the outer ring supports and the furnace body are coaxially arranged, the inner ring supports and the outer ring supports are both hollow, the two ends of the inner ring supports and the outer ring supports are respectively fixedly connected to the upper cover and the lower cover, and the ends of the inner ring supports and the outer ring supports are provided with a second cooling medium inlet and a second cooling medium outlet.

[0007] As a further explanation of the invention: the transmission shaft is located on the outside of the spiral plate and / or on the inside of the spiral plate.

[0008] As a further explanation of the invention: the outer side of each transmission shaft is wrapped with a first thermal insulation layer, both ends of the first thermal insulation layer are fixedly connected to the bracket respectively, and a gap is left between the first thermal insulation layer and the corresponding transmission shaft.

[0009] As a further explanation of the invention: it also includes a first thermal insulation layer arranged on the bracket, the first thermal insulation layer wraps the multiple transmission shafts, and a gap is left between the first thermal insulation layer and each of the transmission shafts.

[0010] As a further explanation of the invention: the first heat insulation layer is fixedly connected to a toggle wheel box at the toggle wheel, the toggle wheel box wraps the toggle wheel with a gap between the two, and the toggle wheel box is opened towards the side of the conveyor belt.

[0011] The opening is used for the pulling wheel to move the conveyor belt on the spiral plate.

[0012] As a further explanation of the invention: both ends of each transmission shaft are rotationally connected to the upper cover and the lower cover respectively.

[0013] As a further explanation of the invention: Each of the inner ring pillars is wrapped with a second insulation layer, and each of the outer ring

[0014] The pillars are wrapped with a third insulation layer.

[0015] As a further explanation of the invention: a group of the inner ring supports are wrapped with a second thermal insulation layer, and a group of the outer ring supports are wrapped with a third thermal insulation layer.

[0016] As a further explanation of the invention: a first heat insulation layer is provided on the outside of each transmission shaft, the first heat insulation layer wraps the transmission shaft and is fixedly connected to the transmission shaft. When the transmission shaft is arranged on the outside of the spiral plate, a gap is left between the first heat insulation layer and the third heat insulation layer. When the transmission shaft is arranged on the inside of the spiral plate, the first heat insulation layer is provided.

[0017] There is a gap between the heat insulation layer and the second heat insulation layer.

[0018] As a further explanation of the invention: the spiral plate includes an arc plate and a plurality of supporting bricks arranged between the outer ring support and the inner ring support, and the plurality of arc plates are placed on the plurality of supporting bricks and laid in sequence to form a spiral channel.

[0019] As a further explanation of the invention: the spiral plate includes multiple support plates and rotating rollers rotatably installed on the support plates, multiple support plates are arranged between the outer ring pillars and the inner ring pillars, and multiple rotating rollers are installed on multiple support plates and laid out in sequence to form a spiral channel.

[0020] On the other hand, the present invention provides a high-temperature spiral conveying heating brazing furnace, comprising the structure of the high-temperature spiral conveying heating device described in the first aspect.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] 1. When the device is in use, the drive shaft rotates, and then the toggle wheel drives the conveyor belt to move along the spiral plate. The hollow space of the drive shaft is provided with a cooling medium to reduce the temperature of the drive shaft. At the same time, the drive shaft is wrapped with a first insulation layer to insulate it from the furnace, which consumes very little heat from the furnace and ensures that the drive shaft always operates at a low temperature. This greatly improves the plasticity, strength, rigidity, and oxidation resistance of the drive shaft and toggle wheel.

[0023] 2. When the device is in use, the outer and inner cooling struts on the bracket are hollowed out to allow cooling medium to flow through, reducing the strut temperature. Furthermore, the outer cooling struts are encased in a second insulation layer, insulating them from the furnace interior, while the inner cooling struts are encased in a third insulation layer. This ensures that the cooling struts operate at a consistently low temperature. As the core support of the furnace, its plasticity, strength, rigidity, and oxidation resistance are significantly improved. This ensures the spiral device's structural stability and transmission system reliability at high temperatures, extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the overall structure of the present invention.

[0025] Figure 2 For the present invention Figure 1 Cross-sectional view of the AOA section.

[0026] Figure 3 For the present invention Figure 1 Cross-sectional view of the middle BB section.

[0027] Description of the accompanying drawings:

[0028] 1. Furnace body; 2. Spiral plate; 21. Support brick; 22. Arc plate; 3. Bracket; 31. Upper cover; 32. Lower cover; 33. Outer ring support; 331. Third thermal insulation layer; 34. Inner ring support; 341. Second cooling medium inlet; 342. Second cooling medium outlet; 343. Second thermal insulation layer; 35. Furnace body wall; 351. Conveyor belt inlet; 352. Conveyor belt outlet; 4. Drive shaft; 41. Driving wheel; 42. First cooling medium inlet; 43. First cooling medium outlet; 5. Driving device; 6. First thermal insulation layer; 61. Driving wheel box; 8. Conveying device; 81. Conveyor belt; 82. External furnace drive system. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the following is a detailed description of the present invention with reference to the accompanying drawings and specific embodiments.

[0030] The present invention is described in detail with reference to the embodiments. It should be noted that, unless there is any conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] Example 1: Figures 1 to 3 As shown, a high-temperature spiral conveying and heating device includes a furnace body 1, a conveying device 8, a heating device, a spiral plate 2, a bracket 3 and multiple transmission shafts 4.

[0035] In this embodiment, the bracket 3 includes an upper cover 31, a lower cover 32, a furnace body wall 35, a group of outer ring supports 33 and a group of inner ring supports 34. The inner ring supports 34 and the outer ring supports 33 are hollow, and the two ends of the inner ring supports 34 and the outer ring supports 33 are respectively connected to the upper cover 31 and the lower cover 32. The ends of the inner ring supports 34 and the outer ring supports 33 are provided with a second cooling medium inlet 341 and a second cooling medium outlet 342.

[0036] In this embodiment, the furnace body 1 is configured as a cylindrical cavity, and the conveying device 8 includes a conveyor belt 81 and an external furnace drive system 82. The conveyor belt 81 enters the furnace body 1 through a conveyor belt inlet 351 provided on the furnace body wall 35, and winds along the spiral plate 2 to its top, and then is led out of the furnace body 1 through a conveyor belt outlet 352 provided on the furnace body wall 35 and returns to the conveyor belt inlet 351 to form a circulating loop heating device for conveying materials with the conveyor belt, including but not limited to electric heating, gas heating, etc.

[0037] In this embodiment, the upper cover 31 and lower cover 32 have the same structure and together with the furnace body wall 35 form a cylindrical body. The outer ring supports 33 and inner ring supports 34 have the same structure and are equal in number. They are coaxially arranged with the furnace body 1. One set of outer ring supports 33 consists of 12 evenly distributed uprights forming a cylindrical body, while one set of inner ring supports 34 consists of 12 evenly distributed uprights forming a cylindrical body. A conveyor belt inlet 351 is located near the lower cover 32 of the furnace body wall 35, and a conveyor belt outlet 352 is located near the upper cover 31 of the furnace body wall 35. The uprights are made of metal.

[0038] In this embodiment, each inner ring support 34 is wrapped with a second insulation layer 343, and each outer ring support 33 is wrapped with a third insulation layer 331. The second insulation layer 343 is fixedly connected to the bottom wall of the upper cover 31 and the top wall of the lower cover 32. The third insulation layer 331 is fixedly connected to the bottom wall of the upper cover 31, the top wall of the lower cover 32, and the furnace body wall 35. The second insulation layer 343 and the third insulation layer 331 are made of high-temperature resistant material.

[0039] In this embodiment, a drive device 5 is mounted on the bracket 3 to rotate the transmission shaft 4. Four transmission shafts 4 are evenly distributed on a concentric circle around the furnace body 1 and parallel to the axis of the furnace body 1. The transmission shafts 4 are hollow, with a first cooling medium inlet 42 and a first cooling medium outlet 43 provided at their ends. Each transmission shaft 4 is provided with four axially mounted toggle wheels 41, sized to rub or mesh with the sides of the conveyor belt 8. Bearing boxes are positioned between each end of the transmission shaft 4 and the upper and lower covers 31, 32 to achieve rotational connection between the transmission shaft 4 and these respective covers. Both the transmission shaft 4 and the axially mounted toggle wheels 41 are constructed of metal.

[0040] In this embodiment, the drive shafts 4 are located outside the spiral plate 2. Each drive shaft 4 is wrapped with a first thermal insulation layer 6, with a gap between the first thermal insulation layer 6 and the drive shaft 4. A pull wheel box 61 is fixedly connected between the first thermal insulation layer 6 and each pull wheel 41. The pull wheel box 61 wraps around the pull wheel 41 with a gap between them. The pull wheel box 61 has an opening facing the side of the conveyor belt, allowing the pull wheel 41 to rub or engage with the side of the conveyor belt 81.

[0041] In this embodiment, the first insulation layer 6 corresponding to the transmission shaft 4 is coaxially arranged with the shifting wheel box 61 provided on the transmission shaft 4. Four shifting wheel boxes 61 are provided on each transmission shaft 4, corresponding to the shifting member 41. The ends of the first insulation layer 6 are fixedly connected to the upper cover 31 and the lower cover 32, respectively. The first insulation layer 6 is made of a high-temperature resistant material.

[0042] In this example, a material conveying device 8 and an external furnace transmission system 82 are provided next to the furnace body 1. The conveyor belt 81 enters the furnace body 1 from the conveyor belt inlet 351, winds along the spiral plate 2 to its top, and then is led out of the furnace body 1 through the conveyor belt outlet 352 and returns to the conveyor belt inlet 351 to form a circulation loop for conveying materials with the conveyor belt.

[0043] In this example, the driving device 5 is configured as four driving motors, the four driving motors are respectively connected to the four transmission shafts 4 , and a speed reducer is provided between the driving motors and the transmission shafts 4 .

[0044] In this embodiment, the cooling medium includes but is not limited to air, water or coolant, etc. Different cooling media can be introduced into the transmission shaft 4, the outer ring support 33 and the inner ring support 34.

[0045] In this embodiment, the spiral plate 2 can be a spiral channel composed of multiple support bricks 21 installed in sequence on the inner circle column 34 and the outer circle pillar 33, and arc plates 82 laid between adjacent support bricks 21. The spiral plate 2 can also be set as a spiral channel composed of a support plate and a roller rotatably arranged on the support plate.

[0046] In this embodiment, the furnace body 1 is provided with a protective atmosphere inlet, and the protective atmosphere includes hydrogen, nitrogen, a hydrogen-nitrogen mixed gas, DX gas, and RX gas.

[0047] The working principle of the present invention is:

[0048] When the device is operating, if the material heating temperature is higher than 200°C, the material conveying device 8 feeds the material-laden conveyor belt 81 into the furnace body 1 through the conveyor belt inlet 351 on the furnace body 1 and winds along the spiral plate 2 to its top. During this process, the heating device heats the interior of the furnace body 1, and the drive motor drives the transmission shaft 4 to rotate the paddle wheel 41. The rotating paddle wheel 41 rubs against or engages with the side of the conveyor belt 81, causing the conveyor belt to move along the spiral plate 2. Simultaneously, the material conveying device 8, located outside the furnace body 1, assists the conveyor belt in its operation. The conveyor belt 81 is pulled out of the furnace body 1 through the conveyor belt 81 outlet 352 on the furnace body 1 and returns to the conveyor belt loop at the conveyor belt inlet 351 on the furnace body 1.

[0049] During this process, a cooling medium is passed through the hollow drive shaft to reduce the drive shaft temperature. At the same time, the drive shaft is wrapped with a first insulation layer to insulate it from the furnace, consuming minimal heat from the furnace and ensuring that the drive shaft operates at a consistently low temperature, thus ensuring high levels of plasticity, strength, rigidity, and oxidation resistance.

[0050] The outer and inner cooling struts on the bracket are hollow, allowing cooling medium to flow through to reduce the strut temperature. The outer cooling struts are also insulated from the furnace interior with a second insulation layer, while the inner cooling struts are insulated from the furnace interior with a third insulation layer. This ensures that the cooling struts maintain a low operating temperature. As the core support of the furnace, its plasticity, strength, rigidity, and oxidation resistance are highly guaranteed. This ensures the structural stability of the spiral device at high temperatures, the reliability of the transmission system, and the extended service life. Furthermore, because the insulation layer insulates it from the furnace's heat source, minimal heat is consumed within the furnace.

[0051] Example 2: This example is the same as Example 1 except that "it also includes a first thermal insulation layer 6 provided on the bracket, the first thermal insulation layer 6 wraps multiple transmission shafts 4, and a gap is left between the first thermal insulation layer 6 and each transmission shaft 4." In this example, the first thermal insulation layer 6 is configured as a ring column, and the first thermal insulation layer 6 wraps multiple transmission shafts 4 at the same time.

[0052] Example 3: This example is the same as Example 1 except that "a first thermal insulation layer (6) is provided on the outside of each transmission shaft (4), the first thermal insulation layer (6) wraps the transmission shaft (4) and is fixedly connected to the transmission shaft (4), and when the transmission shaft (4) is arranged on the outside of the spiral plate (2), a gap is left between the first thermal insulation layer (6) and the third thermal insulation layer (331), and when the transmission shaft (4) is arranged on the inside of the spiral plate (2), a gap is left between the first thermal insulation layer (6) and the second thermal insulation layer (343). In this example, the first thermal insulation layer 6 is arranged in a cylindrical shape and is coaxial with the transmission shaft 4. The first thermal insulation layer 6 rotates with the corresponding transmission shaft 4.

[0053] Example 4: This example is the same as Example 1 except that "a group of inner ring pillars 34 are wrapped with a second thermal insulation layer 343, and a group of outer ring pillars 33 are wrapped with a third thermal insulation layer 331." In this example, the second thermal insulation layer 343 and the third thermal insulation layer 331 are both designed to be annular columnar.

[0054] Example Five: This example is the same as Example One except that "it also includes a first thermal insulation layer 6 provided on the bracket, the first thermal insulation layer 6 wraps a plurality of transmission shafts 4, and a gap is left between the first thermal insulation layer 6 and each transmission shaft 4." and "a group of inner ring pillars 34 are wrapped with a second thermal insulation layer 343, and a group of outer ring pillars 33 are wrapped with a third thermal insulation layer 331." In this example, the first thermal insulation layer 6, the second thermal insulation layer 343 and the third thermal insulation layer 331 are all arranged in an annular column shape, and the first thermal insulation layer 6, the second thermal insulation layer 343 and the third thermal insulation layer 331 are coaxially arranged.

[0055] Example 6: Except that “a second cooling medium inlet 341 and a second cooling medium outlet 342 are provided at the ends of the inner ring support 34 and the outer ring support 33 .”, the rest are the same as Example 1. In this embodiment, the second cooling medium inlet 341 and the second cooling medium outlet 342 can also be provided at the same port of the outer ring support 33 and the inner ring support 34 .

[0056] Example 7: Except for "a group of outer ring pillars 33 is evenly distributed by 12 pillars to form a cylinder, and a group of inner ring pillars 34 is evenly distributed by 12 pillars to form a cylinder", the rest are the same as Example 1. In this embodiment, a group of outer ring pillars 33 is evenly distributed by several pillars to form a cylinder, and a group of inner ring pillars 34 is evenly distributed by 12 pillars to form a cylinder.

[0057] Embodiment 8: Except that “a first cooling medium outlet 43 is provided at one end of the transmission shaft 4, and a first cooling medium inlet 42 is provided at the other end”, the rest are the same as those of embodiment 1. In this embodiment, the transmission shaft 4 can be provided with a first cooling medium outlet 43 and a second cooling medium inlet 42 at the same end of the shaft.

[0058] Embodiment 9: Except that “there are four transmission shafts 4 ”, the rest are the same as the embodiment 1. In this embodiment, there can be several transmission shafts.

[0059] Example 10: Except that "the driving device 5 is configured as four driving motors, the four driving motors are respectively connected to the four transmission shafts 4, and a reducer is provided between the driving motor and the transmission shaft 4", the rest are the same as Example 1. In this embodiment, the drive of the transmission shaft 4 can also be configured as multiple transmission shafts linked together, driven by one driving motor or multiple driving motors.

[0060] Example 11: Except for "the transmission shaft 4 is located outside the spiral plate 2", the rest is the same as Example 1. In this embodiment, the transmission shaft 4 can also be located inside the spiral plate 2 or on both the inside and outside.

[0061] Example 12: Except that “each transmission shaft 4 is provided with four toggle wheels 41 along its axial direction”, the rest is the same as Example 1. In this embodiment, each transmission shaft 4 can also be provided with a plurality of toggle wheels 41 along its axial direction.

[0062] Example 13: A high-temperature spiral conveying heating brazing furnace, including all the structures in Example 1.

[0063] The above embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments.

[0064] Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the technical solution of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A high-temperature spiral conveying heating brazing furnace, comprising a furnace body (1), a conveying device (8), a heating device and a spiral plate (2) located in the furnace body (1), characterized in that: The furnace body (1) further comprises a bracket (3) arranged in the furnace body (1) and a plurality of transmission shafts (4) rotatably arranged on the bracket (3); the spiral plate (2) is arranged on the bracket (3); the plurality of transmission shafts (4) are arranged parallel to the axis of the furnace body (1); the transmission shafts (4) are hollow and have a first cooling medium inlet (42) and a first cooling medium outlet (43) at their shaft ends; each transmission shaft (4) is provided with a plurality of shifting wheels (41) along its axial direction; the shifting wheels (41) are used to shift the conveyor belt to move on the spiral plate (2); and the bracket (3) is provided with a driving device (5) for driving the transmission shaft (4) to rotate; The outer side of each transmission shaft (4) is wrapped with a first heat insulation layer (6), both ends of the first heat insulation layer (6) are fixedly connected to the bracket (3), and a gap is left between the first heat insulation layer (6) and the corresponding transmission shaft (4); The first heat-insulating layer (6) is fixedly connected to a toggle wheel box (61) at the toggle wheel (41), the toggle wheel box (61) wraps the toggle wheel (41) with a gap between the two, and the toggle wheel box (61) is opened toward the side of the conveyor belt, and is used for the toggle wheel (41) to toggle the conveyor belt (81) to move on the spiral plate; The bracket (3) includes an upper cover (31), a lower cover (32), a furnace body wall (35), a group of outer ring supports (33) and a group of inner ring supports (34); the group of inner ring supports (34), the group of outer ring supports (33) and the furnace body (1) are coaxially arranged; the inner ring supports (34) and the outer ring supports (33) are both hollow; the two ends of the inner ring supports (34) and the outer ring supports (33) are respectively fixedly connected to the upper cover (31) and the lower cover (32); the ends of the inner ring supports (34) and the outer ring supports (33) are provided with a second cooling medium inlet (341) and a second cooling medium outlet (342); Both ends of each transmission shaft (4) are rotatably connected to the upper cover (31) and the lower cover (32) respectively; Each inner ring support (34) is wrapped with a second heat insulation layer (343), and each outer ring support (33) is wrapped with a third heat insulation layer (331); The transmission shaft (4) is located outside the spiral plate (2) and / or inside the spiral plate (2); The first thermal insulation layer (6) is fixedly connected to the transmission shaft (4); when the transmission shaft (4) is arranged on the outside of the spiral plate (2), a gap is left between the first thermal insulation layer (6) and the third thermal insulation layer (331); when the transmission shaft (4) is arranged on the inside of the spiral plate (2), a gap is left between the first thermal insulation layer (6) and the second thermal insulation layer (343).

2. The high-temperature spiral conveying heating brazing furnace according to claim 1, characterized in that: A group of the inner ring supports (34) is wrapped with a second heat insulation layer (343), and a group of the outer ring supports (33) is wrapped with a third heat insulation layer (331).

3. The high-temperature spiral conveying heating brazing furnace according to claim 1, characterized in that: The spiral plate (2) comprises an arc plate (22) and a plurality of support bricks (21) arranged between the outer ring support (33) and the inner ring support (34); the plurality of arc plates (22) are placed on the plurality of support bricks (21) and are laid in sequence to form a spiral channel.

4. The high-temperature spiral conveying heating brazing furnace according to claim 1, characterized in that: The spiral plate (2) includes a plurality of supporting plates and rotating rollers rotatably mounted on the supporting plates. A plurality of supporting plates are arranged between the outer ring pillars (33) and the inner ring pillars (34). The plurality of rotating rollers are mounted on the plurality of supporting plates and are sequentially laid out as a spiral channel.

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