Transmission track and heating furnace

Abstract

The utility model provides a transmission track and a heating furnace, the transmission track comprises a feeding track and a discharging track, the discharging end of the feeding track is connected with the feeding end of the discharging track, the discharging end of the discharging track corresponds to the feeding end of the feeding track in position, and the transmission track is characterized in that at least part of the discharging track is bent and folded; therefore, the workpieces conveyed on the discharging track move back and forth in the conveying direction towards the feeding end and the discharging end of the discharging track. According to the utility model, a high-temperature workpiece on the discharging track can heat a low-temperature workpiece on the feeding track by using waste heat of the high-temperature workpiece, so that not only can the energy consumption required for maintaining the temperature in a low-temperature temperature area be reduced, but also the heat of the workpiece subjected to the curing process can be secondarily utilized, and at least part of the discharging track is bent and folded, so that the energy consumption is reduced. And the workpieces on the discharging rail can move back and forth in the conveying direction, the time of heat dissipation of the high-temperature workpieces in a low-temperature area is prolonged, the heat utilization rate is further guaranteed, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of curing oven technology, specifically to a transfer track for a heating oven and a heating oven including the transfer track. Background Technology

[0002] Spray coating is commonly used in hardware, plastics, furniture, military, shipbuilding and other fields. It usually uses spray coating equipment to spray paint onto the surface of the workpiece, which serves to beautify and protect the product. Spray coating is highly efficient and provides uniform and reliable coating coverage on the workpiece surface, making it the most widely used coating method today.

[0003] With advancements in spraying technology, large factories typically employ automated spraying equipment for their spraying operations. After the workpiece completes the spraying process, the surface coating still needs to undergo high-temperature baking and curing. To save on workpiece transportation costs and improve manufacturing efficiency, the paint booths in large factories are often directly connected to high-temperature curing ovens to form a complete production line. A track-transfer system is used to transport workpieces that have completed the spraying process and are awaiting baking into the curing oven, as well as to transport workpieces that have undergone high-temperature curing out.

[0004] However, the existing curing oven structure has the problem of large heat loss, and the temperature of the workpieces is high. This not only requires a long cooling process afterward, but also results in a large overall energy consumption of the production line.

[0005] Therefore, how to provide a transmission track and heating furnace structure that can improve heat utilization has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a transfer track for a heating furnace and a heating furnace including the transfer track, which can improve the heat utilization rate of the heating furnace and reduce production costs.

[0007] To achieve the above objectives, as one aspect of this utility model, a transfer track for a heating furnace is provided. The transfer track includes a feeding track and a discharging track. The discharging end of the feeding track is connected to the feeding end of the discharging track, and the discharging end of the discharging track corresponds to the feeding end of the feeding track. The discharging track is characterized in that it is at least partially bent and folded so that the workpieces transferred on the discharging track move back and forth in the transfer direction toward the feeding end and the discharging end of the discharging track.

[0008] Optionally, the discharge track has a guide groove extending along the length of the discharge track, the guide groove being used to accommodate a flexible conveyor belt.

[0009] Optionally, the discharging track comprises at least one discharging bending structure, the discharging bending structure comprises a plurality of discharging bending segments arranged in the same direction and spaced apart, and the ends of adjacent discharging bending segments are connected to each other.

[0010] Optionally, the discharging track comprises a feeding segment, the discharging bending structure and a discharging segment, one end of the feeding segment is connected to the free end of one discharging bending segment, the other end of the feeding segment is formed as the feeding end of the discharging track, one end of the discharging segment is connected to the free end of another discharging bending segment, and the other end of the discharging segment is formed as the discharging end of the discharging track.

[0011] Optionally, the discharging bending segment comprises a pair of travel side plates arranged in the same direction and a travel bottom support arranged at the bottom of the travel side plates, and the guide groove is formed between the travel side plates and the travel bottom support.

[0012] Optionally, the discharging bending structure further comprises a plurality of turning contact assemblies, the ends of adjacent discharging bending segments are connected to each other through the turning contact assemblies.

[0013] The discharging bending segment has a guide groove extending in the conveying direction, the turning contact assembly comprises a contact wheel and a wheel shaft seat, the contact wheel is movably connected to the wheel shaft seat and can rotate relative to the wheel shaft seat about its own axis, and the guide grooves of adjacent discharging bending segments correspond to the positions of the two side surfaces of the contact wheel, respectively.

[0014] Optionally, the turning contact assembly further comprises an arc-shaped limiting plate and an arc-shaped bottom support, the arc-shaped limiting plate is arranged outside the contact wheel, and the arc-shaped bottom support is located at the bottom of the arc-shaped limiting plate, and the guide grooves of adjacent discharging bending segments are connected through the space defined by the contact wheel, the arc-shaped limiting plate and the arc-shaped bottom support.

[0015] Optionally, the turning contact assembly further comprises a driving motor, the driving motor is used to drive the contact wheel to rotate about its own axis to drive the flexible conveying belt in the guide groove to travel along the guide groove.

[0016] Optionally, the discharging bending structure comprises a first discharging bending segment, a second discharging bending segment and a third discharging bending segment, one end of the second discharging bending segment is connected to the end of the first discharging bending segment, and the other end of the second discharging bending segment is connected to the end of the third discharging bending segment.

[0017] Optionally, the discharging track comprises a plurality of discharging bending structures, the plurality of discharging bending structures are distributed along the conveying direction, and the ends of adjacent discharging bending structures are connected to each other.

[0018] Optionally, the discharge track comprises 4 discharge bending structures.

[0019] Optionally, the feeding track comprises at least one feeding bending structure, the feeding bending structure comprises multiple feeding bending segments arranged in the same direction and spaced apart, and the ends of adjacent feeding bending segments are connected to each other, and the ends of the discharge bending structures on both sides along the conveying direction are formed as the feeding end and the discharge end of the discharge track, respectively.

[0020] As a second aspect of the present application, a heating furnace is provided, which comprises a heat preservation chamber, multiple combustion chambers and the conveying track as described above, the conveying track is arranged in the heat preservation chamber, and the feeding end of the feeding track and the discharge end of the discharge track both extend out of the heat preservation chamber, and the multiple combustion chambers are distributed along the conveying direction and used for heating gas and inputting the gas into different positions in the heat preservation chamber.

[0021] Optionally, the heating furnace further comprises multiple partitions, the multiple partitions are arranged in the conveying direction and spaced apart, and the heat preservation chamber is divided into multiple temperature zones by the multiple partitions.

[0022] The discharge track comprises multiple discharge bending structures distributed along the conveying direction, the multiple discharge bending structures are arranged in the multiple temperature zones, respectively, and adjacent discharge bending structures pass through the partitions and are connected to each other.

[0023] Optionally, the heating furnace comprises 3 partitions, the heat preservation chamber is divided into 4 temperature zones by the 3 partitions, and the discharge track comprises 4 discharge bending structures arranged in the 4 temperature zones in a one-to-one correspondence.

[0024] In the conveying track and the heating furnace provided by the present application, the discharge end of the discharge track corresponds to the feeding end of the feeding track, i.e., the positions of the two ends of the conveying track correspond to each other, after the workpiece enters multiple temperature zones along the feeding track in sequence to be heated and complete the coating curing process, the workpiece enters temperature zones with lower temperature along the discharge track in sequence until the workpiece is conveyed out of the heating furnace. In this process, the high-temperature workpiece that has completed the curing process on the discharge track can heat the low-temperature workpiece on the feeding track by using the residual heat of the high-temperature workpiece, so as to not only reduce the energy consumption required for maintaining the temperature of the low-temperature temperature zone, but also to utilize the heat of the workpiece that has completed the curing process twice and reduce the temperature of the workpiece when the workpiece is conveyed out of the heating furnace, thereby saving the cost of the subsequent cooling process of the workpiece.

[0025] In addition, in the present application, the discharge track is at least partially bent and folded, so that the workpiece conveyed on the discharge track can move back and forth along the conveying direction, the time for the high-temperature workpiece that has completed the curing process to dissipate heat in the low-temperature temperature zone is prolonged, the utilization rate of heat for the curing process is further ensured, and the production cost is reduced. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the transmission track provided in an embodiment of this utility model;

[0028] Figure 2 This is a top view schematic diagram of the transmission track provided in an embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of the material discharge bending section in the transmission track provided in this embodiment of the utility model;

[0030] Figure 4 yes Figure 1 A magnified view of a portion of the transmission track in region A;

[0031] Figure 5 This is a schematic diagram of the structure of the heating furnace provided in this embodiment of the utility model;

[0032] Figure 6 This is a perspective structural diagram of the heating furnace provided in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] Feeding track 10; feeding bending structure 100; feeding bending section 110; discharging track 20; guide groove 21; discharging bending structure 200; discharging bending section 210; traveling side plate 211; traveling base 212; steering contact assembly 220; contact wheel 221; wheel axle seat 222; arc-shaped limiting plate 223; first discharging bending section 210-1; second discharging bending section 210-2; third discharging bending section 210-3. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0036] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0037] To solve the above technical problems, as an aspect of the present application, a conveying track for a heating furnace is provided, as shown in Figure 1 , Figure 2 The conveying track includes a feeding track 10 and a discharging track 20. The discharging end of the feeding track 10 is connected to the feeding end of the discharging track 20. The discharging end of the discharging track 20 corresponds to the feeding end of the feeding track 10. The discharging track 20 is at least partially bent and folded to enable the workpiece conveyed on the discharging track 20 to move back and forth along the conveying direction a towards the feeding end and the discharging end of the discharging track 20.

[0038] It can be understood that the interior of the heating furnace is divided into multiple temperature zones. There is a temperature gradient from low to high in the multiple temperature zones. The conveying track is used to guide the workpiece into the multiple temperature zones in sequence along the conveying direction a to gradually increase the temperature of the workpiece to the solidification temperature range. That is, the feeding track 10 of the conveying track guides the workpiece into the temperature zone with a higher temperature in sequence, and the discharging track 20 guides the workpiece into the temperature zone with a lower temperature in sequence in the opposite direction.

[0039] In the conveying track provided by the present application, the discharging end of the discharging track 20 corresponds to the feeding end of the feeding track 10, that is, the two ends of the conveying track correspond in position. After the workpiece enters the multiple temperatures along the feeding track 10 to increase the temperature and complete the paint solidification process, the workpiece enters the temperature zone with a lower temperature along the discharging track 20 until it is conveyed out of the heating furnace. In this process, the high-temperature workpiece that has completed the solidification process on the discharging track 20 can use its own residual heat to heat the low-temperature workpiece on the feeding track 10, thereby not only reducing the energy consumption required to maintain the temperature in the low-temperature temperature zone, but also enabling secondary use of the heat of the workpiece that has completed the solidification process and reducing the temperature of the workpiece when it is conveyed out of the heating furnace, thereby saving the cost of subsequent cooling process of the workpiece.

[0040] Furthermore, in the present application, the discharging track 20 is at least partially bent and folded, so that the workpiece conveyed on the discharging track 20 can move back and forth along the conveying direction a, thereby prolonging the time for the high-temperature workpiece that has completed the solidification process to dissipate heat in the low-temperature temperature zone, further ensuring the heat utilization rate of the solidification process, and reducing the production cost.

[0041] As an optional embodiment of the present application, as shown in Figure 3 The discharging track 20 has a guide groove 21 extending along the length direction of the discharging track 20. The guide groove 21 is used to accommodate a flexible conveying belt. That is, the workpiece is fixed on the flexible conveying belt and moves along the feeding track 10 and the discharging track 20 together with the flexible conveying belt.

[0042] Optionally, the flexible conveying belt can adopt a structure of a belt, a chain, a metal rope, etc.

[0043] In other embodiments of the utility model, the transmission track can also be other forms of structure, and the workpiece is driven to move by the trolley or other structure moving along the transmission track.

[0044] As a preferred embodiment of the utility model, as shown in Figure 1 , Figure 2 The discharge track 20 comprises at least one discharge bending structure 200, the discharge bending structure 200 comprises a plurality of discharge bending segments 210 arranged in the same direction and spaced apart, and the end portions of adjacent discharge bending segments 210 are connected to each other.

[0045] In the embodiments of the utility model, the discharge track 20 comprises at least one discharge bending structure 200, the discharge bending structure 200 comprises a plurality of discharge bending segments 210 arranged in parallel and connected end to end in sequence, and the workpiece can move back and forth on each discharge bending structure 200 for multiple times in the corresponding area of the discharge bending structure 200, so as to fully exchange heat with the environment of the area and ensure sufficient heat dissipation.

[0046] It can be understood that in the heating furnace (curing furnace), the position of each discharge bending structure 200 can be arranged to correspond to the position of a certain temperature zone of the heating furnace, so that the workpiece on the discharge bending structure 200 fully exchanges heat with the temperature zone when passing through the temperature zone.

[0047] Optionally, the discharge bending segment 210 can extend along the transmission direction a.

[0048] Optionally, the discharge track 20 can be provided with a discharge bending structure 200 at only an individual temperature zone, specifically, the discharge track 20 can comprise a feeding segment, a discharge bending structure 200 and a discharge segment, one end of the feeding segment is connected to the free end (i.e. the end not connected to other discharge bending segments 210) of a discharge bending segment 210, the other end of the feeding segment is formed into the feeding end of the discharge track 20, one end of the discharge segment is connected to the free end of another discharge bending segment 210, and the other end of the discharge segment is formed into the discharge end of the discharge track 20.

[0049] As an optional embodiment of the utility model, as shown in Figure 3 The discharge bending segment 210 comprises a pair of running side plates 211 arranged in the same direction and a running bottom support 212 arranged at the bottom of the running side plate 211, and a guide groove 21 is formed between the running side plate 211 and the running bottom support 212.

[0050] As an optional embodiment of the utility model, as shown in Figure 1 , Figure 2 The discharge bending structure 200 further comprises a plurality of turning contact assemblies 220, and the end portions of adjacent discharge bending segments 210 are connected to each other through the turning contact assemblies 220.

[0051] The guide groove 21 in the discharge bending section 210 extends along the conveying direction a, as shown in the figure Figure 4 The turning contact assembly 220 includes a contact wheel 221 and a wheel shaft seat 222, the contact wheel 221 is movably connected with the wheel shaft seat 222 and can rotate around its own axis relative to the wheel shaft seat 222, and the guide grooves 21 of the adjacent discharge bending sections 210 correspond to the two side surfaces of the contact wheel 221 respectively.

[0052] In the embodiment of the utility model, the turning contact assembly 220 is arranged at the turning joint of the adjacent discharge bending sections 210, the turning contact assembly 220 includes the rotatable contact wheel 221, the wheel surface of the contact wheel 221 is used to contact the flexible conveying belt in the guide groove 21, thereby changing the frictional contact between the flexible conveying belt and the inner wall of the guide groove 21 at the bending section into rolling contact, and further reducing the friction between the flexible conveying belt and the conveying track, and ensuring the fluency of the workpiece conveying action.

[0053] As an optional embodiment of the utility model, as shown in the figure Figure 4 The turning contact assembly 220 further includes an arc-shaped limiting plate 223 and an arc-shaped bottom support (not shown in the figure), the arc-shaped limiting plate 223 is arranged around the outside of the contact wheel 221, the arc-shaped bottom support is located at the bottom of the arc-shaped limiting plate 223, and the guide grooves 21 of the adjacent discharge bending sections 210 are communicated through the space defined by the contact wheel 221, the arc-shaped limiting plate 223 and the arc-shaped bottom support.

[0054] As an optional embodiment of the utility model, the turning contact assembly 220 can further include a driving motor, the driving motor is used to drive the contact wheel 221 to rotate around its own axis to drive the flexible conveying belt in the guide groove 21 to move along the guide groove 21.

[0055] As an optional embodiment of the utility model, as shown in the figure Figure 1 , Figure 2 The discharge bending structure 200 is a three-fold structure, specifically, the discharge bending structure 200 includes a first discharge bending section 210-1, a second discharge bending section 210-2 and a third discharge bending section 210-3, one end of the second discharge bending section 210-2 is connected with the end of the first discharge bending section 210-1, and the other end of the second discharge bending section 210-2 is connected with the end of the third discharge bending section 210-3.

[0056] In other embodiments of the utility model, the discharge bending structure 200 can also be bent into a five-fold structure, a seven-fold structure or other fold structures.

[0057] As an optional embodiment of the utility model, as shown in the figure Figure 1 , Figure 2As shown in the drawings, the discharge track 20 comprises a plurality of discharge bending structures 200, the plurality of discharge bending structures 200 are distributed along the transmission direction a, the ends of adjacent discharge bending structures 200 are connected to each other, and the ends of the discharge bending structures 200 located on both sides along the transmission direction a are formed as the feeding end and the discharging end of the discharge track 20 respectively. It can be understood that the positions of the plurality of discharge bending structures 200 in the heating furnace can correspond to the plurality of temperature zones.

[0058] As an optional embodiment of the utility model, as shown in the drawings, Figure 1 、 Figure 2 The discharge track 20 comprises four discharge bending structures 200, and correspondingly, the heating furnace can be divided into four temperature zones.

[0059] As a preferred embodiment of the utility model, as shown in the drawings, Figure 1 、 Figure 2 The feeding track 10 comprises at least one feeding bending structure 100, the feeding bending structure 100 comprises a plurality of feeding bending segments 110 arranged in the same direction and spaced apart, and the ends of adjacent feeding bending segments 110 are connected to each other.

[0060] In the embodiment of the utility model, the feeding track 10 comprises at least one feeding bending structure 100, the feeding bending structure 100 comprises a plurality of feeding bending segments 110 arranged in parallel and connected end to end in sequence, and the workpiece can reciprocate on each feeding bending structure 100 for multiple times in the corresponding area of the feeding bending structure 100, so as to fully exchange heat with the environment of the area and ensure the heating efficiency.

[0061] It can be understood that in the heating furnace (curing furnace), the position of each feeding bending structure 100 can be arranged to correspond to the position of a temperature zone of the heating furnace, so that the workpiece on the feeding bending structure 100 fully exchanges heat with the temperature zone when passing through the temperature zone.

[0062] Optionally, as shown in the drawings, Figure 1 、 Figure 2 The feeding bending segment 110 can extend along the transmission direction a.

[0063] As an optional embodiment of the utility model, as shown in the drawings, Figure 1 、 Figure 2 The shape of the feeding bending segment 110 can be designed in the same way as the discharge bending segment 210, that is, the feeding bending segment 110 comprises a pair of feeding side plates arranged in the same direction and a feeding bottom support arranged at the bottom of the feeding side plate, and a guide groove is formed between the feeding side plate and the feeding bottom support.

[0064] As an optional embodiment of the utility model, as shown in the drawings, Figure 1 、 Figure 2As shown, the feeding bending structure 100 also comprises a plurality of turning contact assemblies 220, the ends of adjacent feeding bending segments 110 are connected to each other through the turning contact assemblies 220;

[0065] The feeding bending segment 110 has a guide groove 21 extending along the transmission direction a, the turning contact assembly 220 comprises a contact wheel 221 and a wheel shaft seat 222, the contact wheel 221 is movably connected with the wheel shaft seat 222 and can rotate around its own axis relative to the wheel shaft seat 222, the guide grooves 21 of adjacent feeding bending segments 110 correspond to the positions of the two side surfaces of the contact wheel 221 respectively, so that the frictional contact between the flexible transmission belt and the inner wall of the guide groove 21 at the bending part is changed into rolling contact, the friction between the flexible transmission belt and the transmission track is reduced, and the smoothness of the workpiece transmission action is ensured.

[0066] As a second aspect of the present application, a heating furnace is provided, as shown in Figure 5 、 Figure 6 The heating furnace comprises a heat preservation chamber 310, a plurality of combustion chambers 320 and the transmission track provided by the present application, the transmission track is arranged in the heat preservation chamber 310, and the feeding end of the feeding track 10 and the discharging end of the discharging track 20 both extend out of the heat preservation chamber 310, the plurality of combustion chambers 320 are distributed along the transmission direction a, and the plurality of combustion chambers 320 are used for heating gas and inputting the gas into different positions in the heat preservation chamber 310.

[0067] In the heating furnace provided by the present application, the positions of the two ends of the transmission track correspond, the workpieces enter a plurality of temperature zones along the feeding track 10 in turn, are heated and complete the coating curing process, and then enter lower temperature zones along the discharging track 20 in turn until being transmitted out of the heating furnace. In this process, the high-temperature workpieces which have completed the curing process on the discharging track 20 can utilize their own waste heat to heat the low-temperature workpieces on the feeding track 10, so that not only the energy consumption required for maintaining the temperature of the low-temperature temperature zone can be reduced, but also the heat of the workpieces which have completed the curing process can be utilized twice, and the temperature of the workpieces when being transmitted out of the heating furnace is reduced, thereby saving the cost of the subsequent cooling process of the workpieces.

[0068] Furthermore, in the present application, the discharging track 20 is at least partially bent and folded, so that the workpieces transmitted on the discharging track 20 can move back and forth along the transmission direction a, the time for the high-temperature workpieces which have completed the curing process to dissipate heat in the low-temperature temperature zone is prolonged, the utilization rate of heat for the curing process is further ensured, and the production cost is reduced.

[0069] As an optional embodiment of the present application, the heating furnace further comprises a plurality of partitions (not shown in the figure), the plurality of partitions are arranged at intervals along the transmission direction a, and the heat preservation chamber 310 is divided into a plurality of temperature zones by the plurality of partitions;

[0070] The discharge track 20 comprises a plurality of discharge bending structures 200 distributed along the conveying direction a, the plurality of discharge bending structures 200 are respectively arranged in a plurality of temperature zones, and adjacent discharge bending structures 200 pass through the partition plates and are connected with each other.

[0071] As an optional embodiment of the utility model, as shown in Figure 5 、 Figure 6 The heating furnace comprises three partition plates, and the heat preservation chamber 310 is divided into four temperature zones; and the discharge track 20 comprises four discharge bending structures 200, which are arranged in the four temperature zones in a one-to-one correspondence.

[0072] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific embodiment. Any modification not deviating from the function and structural principle of the utility model will be included in the scope of claims.

Claims

1. A transport track for a heating furnace, said transport track comprising an infeed track (10) and an outfeed track (20), the outfeed end of the infeed track (10) being connected to the infeed end of the outfeed track (20), the outfeed end of the outfeed track (20) corresponding in position to the infeed end of the infeed track (10), characterized in that, The discharge track (20) is at least partially arranged in a curved and folded manner, so that the workpiece transported on the discharge track (20) reciprocates along the transport direction (a) towards the feeding end and the discharging end of the discharge track (20).

2. The transport track of claim 1, wherein, The discharge track (20) comprises a feeding section, a discharge curved structure (200) and a discharging section, the discharge curved structure (200) comprises a plurality of discharge curved sections (210) arranged in the same direction and at intervals, and the end portions of adjacent discharge curved sections (210) are connected to each other, one end of the feeding section is connected to the free end of one discharge curved section (210), and the other end of the feeding section is formed as the feeding end of the discharge track (20), one end of the discharging section is connected to the free end of another discharge curved section (210), and the other end of the discharging section is formed as the discharging end of the discharge track (20). Alternatively, the discharge track (20) comprises a plurality of discharge curved structures (200), the plurality of discharge curved structures (200) are distributed along the transport direction (a), the end portions of adjacent discharge curved structures (200) are connected to each other, and the end portions of the discharge curved structures (200) located on both sides along the transport direction (a) are respectively formed as the feeding end and the discharging end of the discharge track (20).

3. The transport track of claim 2, wherein, The discharge curved structure (200) further comprises a plurality of turning contact assemblies (220), and the end portions of adjacent discharge curved sections (210) are connected to each other through the turning contact assemblies (220). The discharge curved section (210) has a guide groove (21) extending along the transport direction (a), and the turning contact assembly (220) comprises a contact wheel (221) and a wheel shaft seat (222), the contact wheel (221) is movably connected with the wheel shaft seat (222) and can rotate around its own axis relative to the wheel shaft seat (222), and the guide grooves (21) of adjacent discharge curved sections (210) correspond to the positions of the two side surfaces of the contact wheel (221) respectively.

4. The transport track of claim 3, wherein, The discharge curved section (210) comprises a pair of travel side plates (211) arranged in the same direction and a travel bottom support (212) arranged at the bottom of the travel side plates (211), and the guide groove (21) is formed between the travel side plates (211) and the travel bottom support (212).

5. The transport track of claim 2, wherein, The discharge curved structure (200) comprises a first discharge curved section (210-1), a second discharge curved section (210-2) and a third discharge curved section (210-3), one end of the second discharge curved section (210-2) is connected to the end portion of the first discharge curved section (210-1), and the other end of the second discharge curved section (210-2) is connected to the end portion of the third discharge curved section (210-3).

6. The transport track of claim 2, wherein, The discharge track (20) comprises four discharge curved structures (200).

7. The transport track according to any one of claims 1 to 6, characterized in that, The feeding track (10) comprises at least one feeding curved structure (100), and the feeding curved structure (100) comprises a plurality of feeding curved sections (110) arranged in the same direction and at intervals, and the end portions of adjacent feeding curved sections (110) are connected to each other.

8. A heating furnace characterized by The heating furnace comprises a holding chamber, a plurality of combustion chambers and the conveying track according to any one of claims 1 to 7, the conveying track is arranged in the holding chamber, and the feeding end of the feeding track (10) and the discharging end of the discharging track (20) both extend out of the holding chamber, the plurality of combustion chambers are distributed along the conveying direction (a), and the plurality of combustion chambers are used for heating gas and inputting the gas into different positions in the holding chamber.

9. The furnace of claim 8, wherein The heating furnace further comprises a plurality of partitions, the plurality of partitions are arranged at intervals along the conveying direction (a), and the holding chamber is divided into a plurality of temperature zones by the plurality of partitions. The discharging track (20) comprises a plurality of discharging bending structures (200) distributed along the conveying direction (a), the plurality of discharging bending structures (200) are arranged in the plurality of temperature zones respectively, and adjacent discharging bending structures (200) pass through the partitions and are connected to each other.

10. The furnace of claim 9, wherein The heating furnace comprises three partitions, the holding chamber is divided into four temperature zones by the three partitions, and the discharging track (20) comprises four discharging bending structures (200), the four discharging bending structures (200) are arranged in the four temperature zones one by one in a one-to-one correspondence.

Images