Chain-plate baking tunnel oven based on thermal radiation heating

Abstract

This invention discloses a chain-plate baking tunnel oven based on thermal radiation heating, relating to the field of pastry baking technology. It includes a chain-plate conveyor for transporting baking trays and a thermal radiation heating system. An upper baking box is fixed above the frame of the chain-plate conveyor, and a lower baking box is fixed below it. A transfer mechanism is provided at one end of the frame, including a liftable tray. Push-pull plate assemblies are fixed on multiple chain plates of the chain-plate conveyor, each including a push plate fixed to the chain plate and two sets of symmetrically distributed pull rods. A return plate assembly is fixed below the frame and placed inside the lower baking box. The baking tray moves within the upper baking box via the chain-plate conveyor, and after reaching the end of the chain-plate conveyor, it is pushed onto the tray by the push plate. This invention solves the problem that single-layer conveyors require a long baking line to meet baking time requirements, resulting in a large equipment footprint, and the mechanical structure of double-layer chain-plate conveyors is not simplified.

Description

Technical Field

[0001] This invention relates to the field of pastry baking technology, and more particularly to a chain-plate type baking tunnel oven based on thermal radiation heating. Background Technology

[0002] The chain plate type baking tunnel oven is an industrial equipment specifically designed for the continuous baking of food (such as pastries, bread, biscuits, etc.). Its core feature is the use of a chain plate conveyor as a carrier to transport food raw materials at a uniform speed through the heating zone within a sealed tunnel structure, and to complete the baking process through precise temperature control.

[0003] The core challenge in optimizing the conveyor structure of pastry baking tunnel ovens is how to shorten the equipment length and simplify the mechanical structure while ensuring baking efficiency. Considering the current state of industry technology, single-layer conveyors require longer baking lines to meet baking time requirements, resulting in a large equipment footprint. While double-layer chain conveyors, with the upper layer for preheating and the lower layer for high-temperature setting, can shorten the equipment length, the mechanical structure is not effectively simplified. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that a single-layer conveyor requires a long baking line to meet the baking time requirements, resulting in a large equipment footprint and the mechanical structure of the double-layer chain conveyor is not simplified. Therefore, a chain-plate baking tunnel oven based on thermal radiation heating is proposed.

[0005] To achieve the above objectives, the present invention employs the following technology: a chain plate baking tunnel oven based on thermal radiation heating, comprising a chain plate conveyor for conveying baking trays and a thermal radiation heating system, wherein an upper baking box is fixed above the frame of the chain plate conveyor and a lower baking box is fixed below it.

[0006] One end of the frame is provided with a transfer mechanism, which includes a liftable tray;

[0007] The chain conveyor has push-pull plate assemblies fixed on multiple chain plates. The push-pull plate assembly includes push plates fixed on the chain plates and two sets of symmetrically distributed pull rods.

[0008] A rewind line assembly placed inside the lower baking oven is fixed below the frame;

[0009] The baking tray moves in the upper baking oven via the conveyor belt. After the baking tray reaches the end of the conveyor belt, it is pushed onto the pallet by the pusher plate.

[0010] The tray descends and corresponds to the return line group. The baking tray is pushed to the return line group by the transfer mechanism. The lower lever is rotated to pull the baking tray along the trajectory of the return line group and move it in the lower baking box.

[0011] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: the transfer mechanism also includes a first servo electric cylinder and a second servo electric cylinder arranged vertically to the first servo electric cylinder. The first servo electric cylinder is arranged vertically, and the piston rod of the first servo electric cylinder is fixed to the tray by a hanger.

[0012] The pallet has an inlet on the side closest to the chain plate and an outlet on the side furthest from the chain plate.

[0013] The piston rod of the second servo electric cylinder is parallel to and corresponds to the return coil assembly. The return coil assembly includes two symmetrically arranged carriages that are fixed in the lower baking oven by multiple support legs.

[0014] Baffles are fixedly installed on both sides of the baking tray;

[0015] The pull rod includes an upright fixed to the chain plate and a crossbar fixed perpendicularly to the upright, and the baffle is placed on the path of the crossbar that rotates downward.

[0016] As a further description of the chain plate baking tunnel oven based on thermal radiation heating described above: the upper end of the baffle is fixed with an arc-shaped plate with an opening facing the first servo electric cylinder.

[0017] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: the upper baking box and the lower baking box are fixed at one end near the transfer mechanism via a transfer box;

[0018] Both the first servo electric cylinder and the second servo electric cylinder are fixed on the transfer box.

[0019] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: multiple chain plates are provided with strip-shaped holes, the push plate is fixedly connected to the chain plate with strip-shaped holes by multiple hinges, the pull rod is fixed on the chain plate on one side of the strip-shaped hole, and the pull rod is placed behind the push plate in the direction of travel of the push plate;

[0020] The frame is fixed with a long straight plate by multiple horizontal bracing rods. The two ends of the long straight plate are fixed with arc-shaped side bracing plates, and the side bracing plates are coaxially arranged with the sprocket shaft of the chain conveyor.

[0021] The long straight plate is positioned below the chain plate in the upper region of the sprocket shaft.

[0022] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: the frame is fixed with a slag recovery tray placed below the conveyor chain of the chain plate conveyor by a support frame;

[0023] The push plate described below contacts the upper surface of the slag recovery disc.

[0024] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: the slag recovery tray includes a large tray and a small tray, the small tray is placed at the input end of the chain plate conveyor, and the distance between the two sets of tie rods is greater than the width of the large tray;

[0025] There is a gap between the large-cap and small-cap stocks.

[0026] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: a scraper is fixed on the upper surface of the large plate near one end of the small plate.

[0027] As a further description of the chain plate baking tunnel oven based on thermal radiation heating mentioned above: multiple ribs are fixed between the lower surface of the large tray and the support frame, and the two ends of the large tray in the length direction are fixed by tie rods.

[0028] As a further description of the chain-plate baking tunnel oven based on thermal radiation heating described above: a proximity switch is fixed on the side of the transfer box away from the chain plate, and the proximity switch corresponds to the baking tray on the chain plate.

[0029] In summary, due to the adoption of the above-mentioned technology in the chain plate baking tunnel oven based on thermal radiation heating, the beneficial effects of this invention are:

[0030] 1. This application uses the push plate of the push-pull tray assembly to push the baking tray onto the pallet, and then the baking tray is transferred to the return tray assembly below by the transfer mechanism. As the pull rod below moves with the chain plate, the pull rod drags the baking tray and the pastries inside to bake in the lower baking box. This solves the problem that traditional single-layer conveying requires a long baking line to meet the baking time requirements, resulting in a large equipment footprint, and also effectively simplifies the overall conveying machinery.

[0031] 2. By fixing an arc-shaped plate with an opening facing the first servo electric cylinder at the upper end of the baffle, when the chain plate with the crossbar rotates clockwise around the sprocket shaft, under the action of the arc-shaped plate, the crossbar will first lift the right end of the baking tray upward through the arc-shaped plate. As the crossbar continues to rise and the contact position with the arc-shaped plate gradually approaches the top of the arc and separates from the top of the arc, the baking tray falls under the action of gravity and collides with the slide. Under the action of vibration, the pastries that have been baked in the baking tray can be loosened, thus facilitating the demolding of the pastries.

[0032] 3. The lower push plate is partially flipped into the slotted hole by the hinge, causing the push plate to deflect. Under the action of gravity, the lower edge abuts against the upper surface of the slag recovery plate. Therefore, when the lower push plate moves from left to right, the slag on the slag recovery plate can be cleaned by the push plate and cleaned to the right end of the chain conveyor, which is convenient for centralized cleaning of the slag.

[0033] 4. Fix a scraper on the upper surface of the large pan near the end of the small pan. When the push plate below passes the scraper, the scraper cleans the residue carried on the lower surface of the push plate to ensure the cleanliness of the push plate and prevent residue on the push plate from falling into the baking pan. Attached Figure Description

[0034] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown;

[0035] Figure 2 A schematic diagram of the overall side view structure provided according to an embodiment of the present invention is shown;

[0036] Figure 3 A schematic diagram of the overall cross-sectional structure provided according to an embodiment of the present invention is shown;

[0037] Figure 4 The present invention provides an embodiment of the invention. Figure 3 Enlarged structural diagram at point A in the middle;

[0038] Figure 5 A schematic diagram of the push-pull plate assembly and chain plate installation state provided according to an embodiment of the present invention is shown;

[0039] Figure 6 The present invention provides an embodiment of the invention. Figure 5 Schematic diagram of the partial front view structure;

[0040] Figure 7 A schematic diagram of the overall local state structure provided according to an embodiment of the present invention is shown;

[0041] Figure 8 The present invention provides an embodiment of the invention. Figure 7 Enlarged structural diagram at point B;

[0042] Figure 9 A schematic diagram of the return coil assembly structure provided according to an embodiment of the present invention is shown;

[0043] Figure 10 A schematic diagram of a long straight plate and an arc plate structure provided according to an embodiment of the present invention is shown;

[0044] Figure 11 A schematic diagram of the slag recovery disc structure provided according to an embodiment of the present invention is shown;

[0045] Figure 12 A schematic diagram of the bottom structure of the slag recovery pan provided according to an embodiment of the present invention is shown;

[0046] Figure 13 A partial structural schematic diagram of the transfer mechanism provided according to an embodiment of the present invention is shown;

[0047] Figure 14 A schematic diagram of a baking tray structure provided according to an embodiment of the present invention is shown.

[0048] Legend:

[0049] 10. Chain conveyor; 11. Chain plate; 111. Slotted hole; 12. Frame; 13. Sprocket shaft;

[0050] 20. Upper baking oven; 21. Exhaust pipe;

[0051] 30. Lower baking oven; 31. Transit box;

[0052] 40. Thermal radiation heating system; 41. Heater;

[0053] 50. Transfer mechanism; 51. First servo electric cylinder; 511. Guide rod; 52. Hanger; 53. Tray; 531. Push tray opening; 532. Inlet tray opening; 54. Proximity switch; 55. Second servo electric cylinder;

[0054] 60. Return cable assembly; 61. Carriage; 62. Outriggers;

[0055] 70. Push-pull plate assembly; 71. Push plate; 711. Hinge; 72. Pull rod; 721. Upright post; 722. Horizontal post; 73. Long straight plate; 74. Side support plate; 75. Horizontal support rod;

[0056] 80. Slag recovery tray; 81. Large tray; 82. Small tray; 821. Circumvention opening; 83. Scraper; 84. Support frame; 841. Tie rod; 842. Rib plate;

[0057] 90. Baking tray; 91. Baffle; 92. Curved plate. Detailed Implementation

[0058] The following will describe clearly and completely the technology of the chain plate baking tunnel oven based on thermal radiation heating in the embodiments of the present invention with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figure 1 - Figure 14As shown, the present invention provides a chain plate baking tunnel oven based on thermal radiation heating, including a chain plate conveyor 10 for conveying baking trays 90 and a thermal radiation heating system 40. An upper baking box 20 with open ends is fixed above the frame 12 of the chain plate conveyor 10, and a lower baking box 30 with open ends is fixed below it. Both the upper baking box 20 and the lower baking box 30 are dried and heated by multiple heaters 41 of the thermal radiation heating system 40.

[0060] A transfer mechanism 50 is provided at the left end of the frame 12 (that is, the conveying end of the chain conveyor 10). The transfer mechanism 50 includes a liftable tray 53. The tray 53 can be adjusted to correspond with the upper chain plate 11 of the chain conveyor 10, thereby facilitating the transfer of the baking tray 90 on the upper chain plate 11 to the tray 53.

[0061] The chain conveyor 10 has multiple chain plates 11 fixed with push-pull plate assemblies 70. The push-pull plate assembly 70 includes push plates 71 fixed on the chain plates 11 and evenly distributed, and two sets of pull rods 72 symmetrically distributed at both ends of the chain plates 11. The area of ​​the chain plate 11 between two adjacent push plates 71 is a placement area for a baking tray 90.

[0062] Below the frame 12 is a return line assembly 60 placed inside the lower baking oven 30. The return line assembly 60 is parallel to the conveying direction of the chain conveyor 10. The width of the baking tray 90 is adapted to the width of the return line assembly 60 to prevent the baking tray 90 from swaying back and forth perpendicular to the conveying direction.

[0063] The baking tray 90 moves within the upper baking oven 20 via the conveyor belt 11. The pastries in the baking tray 90 are then heated and baked by the heater 41 in the upper baking oven 20. Moisture can be drained through the exhaust pipe 21 at the top of the upper baking oven 20. When the baking tray 90 reaches the end of the conveyor belt 10, the tray 53 corresponds to the conveyor belt 10. When the push plate 71 rotates around the sprocket shaft 13 of the conveyor belt 10, it pushes the baking tray 90 onto the tray 53.

[0064] Subsequently, tray 53 descends and corresponds to the left end of return line group 60 (that is, the conveying end of chain conveyor 10). Baking tray 90 is pushed to return line group 60 by transfer mechanism 50, completing the transfer of baking tray 90. Then, during the cyclic rotation of chain plate 11, after rotating to the bottom, the lower pull rod 72 pulls baking tray 90 to move along the trajectory of return line group 60 in lower baking box 30. Then, the pastries in baking tray 90 can be baked by heater 41 in lower baking box 30.

[0065] This application uses the push plate 71 of the push-pull plate assembly 70 to push the baking tray 90 onto the tray 53, and then the transfer mechanism 50 transfers the baking tray 90 to the return line assembly 60 below. As the pull rod 72 moves with the chain plate 11 below, the pull rod 72 drags the baking tray 90 and the pastries inside to bake in the lower baking box 30. This solves the problem that traditional single-layer conveying requires a long baking line to meet the baking time requirements, resulting in a large equipment footprint, and also effectively simplifies the overall conveying machinery.

[0066] like Figure 3 , Figure 8 , Figure 13 , Figure 14 As shown, the transfer mechanism 50 also includes a first servo electric cylinder 51 and a second servo electric cylinder 55 arranged vertically to the first servo electric cylinder 51. The first servo electric cylinder 51 is arranged vertically, and the piston rod of the first servo electric cylinder 51 is fixed to the tray 53 by a hanger 52. The extension and retraction of the piston rod of the first servo electric cylinder 51 drives the tray 53 to rise and fall.

[0067] The tray 53 has a tray inlet 532 on the side near the chain plate 11. The opening edge of the tray inlet 532 is fixed with an outwardly inclined guide slope. The guide slope prevents the baking tray 90 from getting stuck at the tray inlet 532 when it slides into the tray 53. The tray 53 has a push tray opening 531 on the side away from the chain plate 11.

[0068] The piston rod of the second servo electric cylinder 55 is parallel to and corresponds to the return coil group 60. When the piston rod of the first servo electric cylinder 51 drives the tray 53 to descend and correspond to the return coil group 60, the piston rod of the second servo electric cylinder 55 corresponds to the push plate opening 531. By extending the piston rod of the second servo electric cylinder 55, the baking tray 90 on the tray 53 can be pushed onto the return coil group 60.

[0069] The return line assembly 60 includes two symmetrically arranged carriages 61 fixed inside the lower baking oven 30 by multiple support legs 62. The distance between the two carriages 61 is adapted to the width of the baking tray 90. An outwardly inclined guide ramp is fixed at one end of each carriage 61 near the transfer mechanism 50. The guide ramp can guide the baking tray 90 and also prevent the baking tray 90 from getting stuck when it moves toward the carriage 61.

[0070] Baffles 91 are fixedly installed on both sides of the baking tray 90;

[0071] The pull rod 72 includes a vertical rod 721 fixed on the chain plate 11 and a horizontal rod 722 fixed vertically to the vertical rod 721. When the baking tray 90 is pushed onto the carriage 61 by the piston rod of the second servo electric cylinder 55, the baffle 91 is placed below the chain plate 11 and at the same time, the baffle 91 is placed on the path of the horizontal rod 722 that rotates to the lower side. When the horizontal rod 722 moves horizontally with the chain plate 11 below, and when the horizontal rod 722 abuts against the baffle 91, the horizontal rod 722 can push the baffle 91 and the baking tray 90 to move from left to right along the carriage 61.

[0072] like Figure 8 , Figure 14 As shown, the upper end of the baffle 91 is fixed with an arc-shaped plate 92 with an opening facing the first servo electric cylinder 51. When the crossbar 722 abuts against the baffle 91, the crossbar 722 is placed in the concave side of the arc-shaped plate 92. When the crossbar 722 moves to the right end of the chain conveyor 10 (that is, the end of the chain conveyor 10 away from the transfer mechanism 50), when the chain plate 11 with the crossbar 722 rotates clockwise around the sprocket shaft 13, under the action of the arc-shaped plate 92, the crossbar 722 will first lift the right end of the baking tray 90 upward through the arc-shaped plate 92. As the crossbar 722 continues to rise and the contact position with the arc-shaped plate 92 gradually approaches the top of the arc and separates from the top of the arc, the baking tray 90 falls under the action of gravity and collides with the slide 61. Under the action of vibration, the pastries that have been baked in the baking tray 90 can be loosened, thus facilitating the demolding of the pastries.

[0073] like Figure 1 , Figure 2 , Figure 3 As shown, the upper baking oven 20 and the lower baking oven 30 are fixed at one end near the transfer mechanism 50 by the transfer box 31, so that the baking tray 90 is in a relatively sealed space during the transfer process, thereby avoiding the problem of pastry shrinkage caused by large temperature difference during outdoor transfer, and also avoiding the problem of heat loss caused by outdoor transfer.

[0074] The first servo electric cylinder 51 and the second servo electric cylinder 55 are both fixed on the transfer box 31, and the piston rod of the first servo electric cylinder 51 is fixed with two guide rods 511 that pass through the transfer box 31 in parallel to improve the lifting stability of the tray 53.

[0075] like Figure 4 , Figure 6 , Figure 10As shown, multiple chain plates 11 have strip-shaped holes 111. The push plate 71 is fixedly connected to the chain plate 11 with strip-shaped holes 111 by multiple hinges 711. The hinges 711 are placed on the left side of the upper push plate 71. At the same time, the outer dimensions of the strip-shaped holes 111 are larger than the cross-section of the lower surface of the push plate 71, so that the push plate 71 can be deflected by the flipping of the hinges 711. The pull rod 72 is fixed on the chain plate 11 on one side of the strip-shaped holes 111. The pull rod 72 is placed behind the push plate 71 in the direction of travel to ensure that the push plate 71 can push the baking tray 90 onto the tray 53 first, so as to ensure the priority operation of the push plate 71 and avoid interference between the pull rod 72 and the baking tray 90.

[0076] The frame 12 is fixed with a long straight plate 73 by multiple cross braces 75. The long straight plate 73 is placed inside the conveyor chain to avoid affecting the normal operation of the conveyor chain. At the same time, arc-shaped side support plates 74 are fixed tangentially at both ends of the long straight plate 73. The side support plates 74 are coaxially arranged with the sprocket shaft 13 of the chain conveyor 10. That is to say, the arc-shaped side support plates 74 are attached to the inner surface of the chain plate 11 that rotates around the sprocket shaft 13.

[0077] Meanwhile, the long straight plate 73 is placed below the upper area chain plate 11 of the sprocket shaft 13 and is attached to the lower surface of the chain plate 11. It serves two purposes: first, to support the upper area chain plate 11, and second, to support the upper push plate 71. When the push plate 71 passes the left side support plate 74, the lower end of the push plate 71 abuts against the side support plate 74 through the strip hole 111. At this time, the push plate 71 is supported by the side support plate 74 so that the push plate 71 can maintain the pushing state of the baking tray 90.

[0078] like Figure 2 , Figure 3 , Figure 6 Figure 7 As shown, the right end of the frame 12 is fixed with a support frame 84 to a material residue recovery tray 80 placed below the conveyor chain of the chain conveyor 10. At the same time, the material residue recovery tray 80 is wider than the baking tray 90. Therefore, when the chain conveyor 10 conveys pastries, pastry crumbs fall through the gaps in the chain plate 11 and are recovered by the material residue recovery tray 80, preventing the crumbs from falling into the baking tray 90 on the slide 61.

[0079] Meanwhile, after the push plate 71 passes around the left sprocket shaft 13 and is placed below the sprocket shaft 13, the lower push plate 71 is partially flipped into the strip hole 111 through the hinge 711, causing the push plate 71 to deflect. Under the action of gravity, the lower edge abuts against the upper surface of the slag recovery plate 80. Therefore, when the lower push plate 71 moves from left to right, the slag on the slag recovery plate 80 can be cleaned by the push plate 71 and cleaned to the right end of the chain conveyor 10, which facilitates centralized cleaning of the slag.

[0080] like Figure 11 , Figure 12As shown, the slag recovery disc 80 includes a large disc 81 and a small disc 82. The small disc 82 is placed at the input end of the chain conveyor 10, that is, it extends out of the chain conveyor 10. Therefore, the small disc 82 can easily clean the slag. The distance between the two sets of tie rods 72 is greater than the width of the large disc 81. The crossbar 722 passes through the clearance opening 821 formed between the large disc 81 and the small disc 82 to avoid interference between the crossbar 722 and the slag recovery disc 80 when it rotates around the sprocket shaft 13. At the same time, the small disc 82 extends out to facilitate the cleaning of the slag.

[0081] like Figure 4 , Figure 11 As shown, a scraper 83 is fixed on the upper surface of the large plate 81 near the end of the small plate 82. When the push plate 71 below passes the scraper 83, the scraper 83 cleans the material residue carried on the lower surface of the push plate 71 to ensure the cleanliness of the push plate 71 and prevent the material residue on the push plate 71 from falling into the baking tray 90.

[0082] like Figure 4 , Figure 12 As shown, multiple ribs 842 are fixed between the lower surface of the large pan 81 and the support frame 84. At the same time, the large pan 81 is fixed at both ends along its length by tie rods 841 to improve the support strength and stability of the support frame 84 for the slag recovery pan 80. By fixing the slag recovery pan 80 to one side, the left end of the slag recovery pan 80 is suspended, thereby avoiding interference with the rotation of the crossbar 722 and the normal rotation of the baking pan 90.

[0083] like Figure 3 As shown, a proximity switch 54 is fixed on the side of the transfer box 31 away from the chain plate 11. The proximity switch 54 corresponds to the baking tray 90 on the chain plate 11. When the tray 53 corresponds to the chain plate conveyor 10, the proximity switch 54 is located directly behind the push plate opening 531. When the push plate 71 pushes the baking tray 90 onto the tray 53, the proximity switch 54 detects the position of the baking tray 90. The proximity switch 54 is controlled by the first servo electric cylinder 51 and the second servo electric cylinder 55 through a programmable switch to realize the automatic lifting of the tray 53 and the pushing of the baking tray 90 onto the carriage 61.

[0084] Working principle: The baking tray 90 containing pastries is placed on the conveyor chain of the chain conveyor 10, with the side with baffle 91 placed on the outside. Then, the conveyor chain rotates clockwise, so that the baking tray 90 is baked from right to left in the upper baking box 20. When the baking tray 90 reaches the position of the tray 53, one end of the baking tray 90 is guided onto the tray 53 through the guide bevel.

[0085] Subsequently, when the chain plate 11 with push plate 71 rotates around the sprocket shaft 13, the push plate 71 will push the baking tray 90 onto the tray 53, and the baking tray 90 will move away from the conveyor chain. Then the proximity switch 54 detects the position information of the baking tray 90 and starts the first servo electric cylinder 51 through the programmable switch. The piston rod drives the tray 53 to descend and correspond to the carriage 61.

[0086] Then the second servo electric cylinder 55 is activated, and the piston rod pushes the baking tray 90 onto the carriage 61 through the push plate port 531. When the lower crossbar 722 moves and abuts against the baffle 91, the lower baking tray 90 slides to the right and disengages from the tray 53 by the lower crossbar 722 moving from left to right. Then the piston rod of the second servo electric cylinder 55 is retracted, and the piston rod of the first servo electric cylinder 51 is contracted, so that the tray 53 is reset. The pastries in the baking tray 90 are then baked in the lower baking oven 30.

[0087] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention based on the technology of the chain plate baking tunnel oven and its inventive concept based on thermal radiation heating should be covered within the scope of protection of the present invention.

Claims

1. A chain conveyor-type baking tunnel oven based on thermal radiation heating, comprising a chain conveyor (10) for conveying baking trays (90) and a thermal radiation heating system (40), characterized in that, The upper baking box (20) is fixed above the frame (12) of the chain conveyor (10), and the lower baking box (30) is fixed below it. One end of the frame (12) is provided with a wire transfer mechanism (50), which includes a liftable tray (53). The chain conveyor (10) has multiple chain plates (11) fixed with push-pull plate assemblies (70), which include push plates (71) fixed on the chain plates (11) and two sets of symmetrically distributed pull rods (72). The bottom of the frame (12) is fixed with a rewind line assembly (60) placed inside the lower baking oven (30). The baking tray (90) moves in the upper baking box (20) via the conveyor (11). After the baking tray (90) reaches the end of the conveyor (10), it is pushed onto the pallet (53) by the pusher (71). The tray (53) descends and corresponds to the return line group (60). The baking tray (90) is pushed to the return line group (60) via the transfer mechanism (50). The lower pull rod (72) is rotated to pull the baking tray (90) to move along the trajectory of the return line group (60) in the lower baking box (30). Multiple chain plates (11) are provided with strip-shaped holes (111). The push plate (71) and the chain plates (11) with strip-shaped holes (111) are fixedly connected by multiple hinges (711). The pull rod (72) is fixed on the chain plate (11) on one side of the strip-shaped hole (111). The pull rod (72) is located behind the push plate (71) in the direction of travel. The frame (12) is fixed with a long straight plate (73) by multiple cross braces (75). The two ends of the long straight plate (73) are fixed with arc-shaped side support plates (74). The side support plates (74) are coaxially arranged with the sprocket shaft (13) of the chain conveyor (10). The long straight plate (73) is placed below the chain plate (11) in the upper region of the sprocket shaft (13); The frame (12) is fixed with a slag recovery tray (80) placed below the conveying chain of the chain conveyor (10) by a support frame (84). The push plate (71) below is in contact with the upper surface of the slag recovery tray (80); The slag recovery disc (80) includes a large disc (81) and a small disc (82). The small disc (82) is placed at the input end of the chain conveyor (10). The distance between the two sets of tie rods (72) is greater than the width of the large disc (81). There is a gap (821) between the large-cap (81) and small-cap (82). A scraper (83) is fixed to one end of the upper surface of the large plate (81) near the small plate (82).

2. The chain-plate baking tunnel oven based on thermal radiation heating according to claim 1, characterized in that, The wire transfer mechanism (50) further includes a first servo electric cylinder (51) and a second servo electric cylinder (55) arranged vertically to the first servo electric cylinder (51). The first servo electric cylinder (51) is arranged vertically, and the piston rod of the first servo electric cylinder (51) is fixed to the tray (53) by a hanger (52). The pallet (53) has an inlet (532) on the side near the chain plate (11) and a push-out (531) on the side away from the chain plate (11). The piston rod of the second servo electric cylinder (55) is parallel to and corresponds to the return coil assembly (60). The return coil assembly (60) includes two symmetrically arranged carriages (61) fixed in the lower baking oven (30) by multiple support legs (62). Baffles (91) are fixedly installed on both sides of the baking tray (90); The pull rod (72) includes a vertical rod (721) fixed on the chain plate (11) and a horizontal rod (722) fixed perpendicularly to the vertical rod (721), and the baffle (91) is placed on the path of the horizontal rod (722) rotating downward.

3. The chain-plate baking tunnel oven based on thermal radiation heating according to claim 2, characterized in that, The upper end of the baffle (91) is fixed with an arc-shaped plate (92) with an opening facing the first servo electric cylinder (51).

4. The chain-plate baking tunnel oven based on thermal radiation heating according to claim 2, characterized in that, The upper baking oven (20) and the lower baking oven (30) are fixed at one end near the transfer mechanism (50) by a transfer box (31); The first servo electric cylinder (51) and the second servo electric cylinder (55) are both fixed on the transfer box (31).

5. The chain-plate baking tunnel oven based on thermal radiation heating according to claim 4, characterized in that, Multiple ribs (842) are fixed between the lower surface of the large plate (81) and the support frame (84), and the two ends of the large plate (81) in the length direction are fixed by tie rods (841).

6. The chain-plate baking tunnel oven based on thermal radiation heating according to claim 4, characterized in that, The transfer box (31) is fixed with a proximity switch (54) on the side away from the chain plate (11), and the proximity switch (54) corresponds to the baking tray (90) on the chain plate (11).

Images