Chain transmission roller hearth type heating furnace

Abstract

The utility model provides a chain transmission roller hearth type heating furnace, and belongs to the technical field of heating furnaces. The chain transmission roller hearth type heating furnace comprises a furnace body, heat insulation cotton, a transmission roller, a mounting plate, a motor, a first transmission chain wheel, a first chain wheel assembly, a chain body, a second transmission chain wheel and a second chain wheel assembly. The multiple second transmission chain wheels are connected with the multiple transmission rollers correspondingly, and the multiple second transmission chain wheels are embedded into the chain body, so that when the chain body moves, the chain body can drive the multiple second transmission chain wheels to rotate at the same time, and therefore the multiple transmission rollers are driven to rotate at the same time; compared with the mode that a plurality of transmission rollers are connected with a plurality of driving devices respectively, the number of the driving devices can be reduced, and then the production cost of products is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of heating furnace technology, specifically relating to a chain-driven roller hearth heating furnace. Background Technology

[0002] In related technologies, when heat-treating a workpiece, the workpiece needs to be placed on a roller inside a heating furnace, and the workpiece is moved by rotating the roller.

[0003] Existing technology (authorization announcement number: CN103834791B) discloses a continuous roller quenching cooling system for steel plates, including a water spraying system, a water supply system, a conveying roller system, and a frame lifting system. The working areas of the cooling system sequentially include a transition zone, a high-pressure quenching zone, and a medium-pressure quenching zone. Within the high-pressure and medium-pressure quenching zones, nozzles and conveying rollers are symmetrically arranged vertically along the steel plate. The upper nozzles and upper rollers are fixed to a movable upper frame, and the lower nozzles and lower rollers are fixed to a fixed frame. This invention introduces roller quenching into the quenching of extra-thick steel plates, solving problems such as low cooling rate, poor cooling uniformity, poor batch production stability, and inability to manually intervene in the quenching process in traditional immersion quenching. It achieves high-strength, uniform quenching of extra-thick steel plates and efficient, stable production.

[0004] In this prior art, each conveyor roller is equipped with a transmission system, which includes a universal joint, a drive motor, and an encoder. The drive motor uses frequency conversion control, and the actual roller speed is fed back through the encoder. Closed-loop control is used to achieve precise control of the roller speed. Because each conveyor roller is equipped with a transmission system, the total number of transmission systems is increased, thereby increasing the production cost of the product. Utility Model Content

[0005] To address the issue in existing technologies where each conveyor roller requires its own transmission system, thus increasing the total number of transmission systems and consequently raising production costs, this invention provides a chain-driven roller hearth furnace. This furnace utilizes multiple second-drive sprockets connected to multiple drive rollers, with these sprockets embedded within the chain body. This allows the chain body to simultaneously drive multiple second-drive sprockets when it moves, thereby simultaneously rotating multiple drive rollers. Compared to connecting multiple drive rollers to multiple drive devices, this reduces the number of drive devices required, ultimately lowering production costs. The specific technical solution is as follows:

[0006] A chain-driven roller hearth furnace includes: a furnace body, insulation cotton, drive rollers, a mounting plate, a motor, a first drive sprocket, a first sprocket assembly, a chain body, a second drive sprocket, and a second sprocket assembly. The furnace body is a hollow cavity. The insulation cotton is attached to the inner wall of the furnace body. The drive rollers are ceramic, and multiple drive rollers are located inside the furnace body. The two ends of the multiple drive rollers pass through the insulation cotton and the side wall of the furnace body in sequence, and the two ends of the multiple drive rollers are rotatably connected to the furnace body. The mounting plate is fixed to the side wall of the furnace body and is located below the drive rollers. The motor is equipped with an output shaft and is mounted on the mounting plate. On the plate; the first drive sprocket is fitted on the outside of the motor's output shaft; two first sprocket assemblies are rotatably connected to the side wall of the furnace body, and the first sprocket assemblies are located above the first drive sprocket; the chain body is fitted on the outside of both the two first sprocket assemblies and the first drive sprocket; multiple second drive sprockets are respectively connected to multiple drive rollers, the multiple second drive sprockets are located on the outside of the furnace body, and the multiple second drive sprockets are embedded in the chain body; two second sprocket assemblies are rotatably connected to the side wall of the furnace body, the two second sprocket assemblies are located below the second drive sprocket, and the two second sprocket assemblies are embedded in the chain body.

[0007] In addition, the chain-driven roller hearth heating furnace in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0008] In the above technical solution, the chain-driven roller hearth heating furnace also includes: chain guide rails; two chain guide rails are installed on the side wall of the furnace body, and the chain body is placed on the two chain guide rails.

[0009] In the above technical solution, the first sprocket assembly includes: a first adjusting seat, a first lead screw, a first adjusting block, a first rotating shaft, and a first sprocket body; the first adjusting seat is provided with a first adjusting groove and is fixed to the side wall of the furnace body; the outer wall of the first lead screw is provided with a first external thread, the first lead screw is located in the first adjusting groove, and the first lead screw is rotatably connected to the first adjusting seat; the first adjusting block is provided with a first threaded hole, the first threaded hole is provided with a first internal thread, the first adjusting block is embedded in the first adjusting groove, and the first lead screw passes through the first threaded hole of the first adjusting block; the first rotating shaft is connected to the first adjusting block; the first sprocket body is fitted on the outside of the first rotating shaft, the first sprocket body rotates relative to the first rotating shaft, and the chain body is fitted on the outside of the first sprocket body; wherein, the first external thread and the first internal thread are adapted to each other.

[0010] In the above technical solution, the second sprocket assembly includes: a second adjusting seat, a second lead screw, a second adjusting block, a second rotating shaft, and a second sprocket body; the second adjusting seat is provided with a second adjusting groove and is fixed to the side wall of the furnace body; the outer wall of the second lead screw is provided with a second external thread, the second lead screw is located in the second adjusting groove, and the second lead screw is rotatably connected to the second adjusting seat; the second adjusting block is provided with a second threaded hole, the second threaded hole is provided with a second internal thread, the second adjusting block is embedded in the second adjusting groove, and the second lead screw passes through the second threaded hole of the second adjusting block; the second rotating shaft is connected to the second adjusting block; the second sprocket body is fitted on the outside of the second rotating shaft, the second sprocket body rotates relative to the second rotating shaft, and the second sprocket body is embedded in the chain body; wherein, the second external thread and the second internal thread are adapted to each other.

[0011] In the above technical solution, the chain-driven roller hearth furnace further includes: a mounting base, a connecting shaft, bearing bodies, a first cooling channel, a second cooling channel, and an air nozzle; the mounting base is fixed to the outer wall of the furnace body; the connecting shaft passes through the mounting base, one end of the connecting shaft is connected to the drive roller, and the other end of the connecting shaft is connected to the second drive sprocket; two bearing bodies are fitted onto the outside of the connecting shaft, the two bearing bodies are embedded in the mounting base, and there is a gap between the two bearing bodies; the first cooling channel is set in the mounting base, and the gap between the first cooling channel and the two bearing bodies is opposite; the second cooling channel is set in the mounting base, the second cooling channel is connected to the first cooling channel, and the second cooling channel is perpendicular to the first cooling channel; the air nozzle is installed on the side wall of the mounting base, and the air nozzle is connected to the second cooling channel.

[0012] In the above technical solution, the chain-driven roller hearth furnace further includes: a plug bolt; the plug bolt is installed on the top of the mounting base and is embedded in the first cooling channel; wherein, the two ends of the connecting shaft are hexagonal.

[0013] In the above technical solution, the chain-driven roller hearth heating furnace further includes: a first support roller, a first heating wire, a second support roller, and a second heating wire; multiple first support rollers are located inside the furnace body, with both ends of the multiple first support rollers passing through heat insulation cotton, both ends of the multiple first support rollers being connected to the furnace body, and the multiple first support rollers being located above multiple drive rollers; multiple first heating wires are respectively fitted on the outside of the multiple first support rollers, the multiple first heating wires passing through the heat insulation cotton and the furnace body in sequence, and the multiple first heating wires being electrically connected to a power source; multiple second support rollers are located inside the furnace body, with both ends of the multiple second support rollers passing through heat insulation cotton, both ends of the multiple second support rollers being connected to the furnace body, and the multiple second support rollers being located below multiple drive rollers; multiple second heating wires are respectively fitted on the outside of the multiple second support rollers, the multiple second heating wires passing through the heat insulation cotton and the furnace body in sequence, and the multiple second heating wires being electrically connected to a power source.

[0014] In the above technical solution, the chain-driven roller hearth furnace further includes: radiant tubes, air valves, burners, gas pipes, air pipes, and exhaust pipes; the radiant tubes are hollow cavities, multiple radiant tubes are located inside the furnace body, both ends of the multiple radiant tubes pass through insulation cotton, one end of the radiant tube is fixed to one inner wall of the furnace body, and the other end of the radiant tube passes through another inner wall of the furnace body, and the multiple radiant tubes are respectively located on the upper and lower sides of the drive roller; multiple air valves are installed on the outside of the furnace body, and the multiple air valves are respectively connected to the multiple radiant tubes; multiple burners are respectively installed on the outside of the multiple air valves, and the output ends of the multiple burners are respectively connected to the multiple air valves; the gas pipe is installed on the outside of the furnace body, and the gas pipe is connected to the multiple burners; the air pipe is installed on the outside of the furnace body, and the air pipe is connected to the multiple air valves; the exhaust pipe is installed on the outside of the furnace body, and the exhaust pipe is connected to the multiple air valves.

[0015] The advantages of this chain-driven roller hearth heating furnace compared with the prior art are as follows:

[0016] 1. By rotatably connecting two first sprocket assemblies to the side wall of the furnace body, the first transmission sprocket is sleeved on the outside of the motor's output shaft, and the chain body is simultaneously sleeved on the outside of the first transmission sprocket and the two first sprocket assemblies. This allows the first transmission sprocket and the two first sprocket assemblies to cooperate in supporting the chain body, so that when the motor drives the first transmission sprocket to rotate, the first transmission sprocket and the two first sprocket assemblies cooperate in driving the chain body to move. By connecting multiple second transmission sprockets to multiple transmission rollers respectively, and embedding the multiple second transmission sprockets into the chain body, when the chain body moves, the chain body can simultaneously drive the multiple second transmission sprockets to rotate, thereby simultaneously driving the multiple transmission rollers to rotate. Compared to connecting multiple transmission rollers to multiple drive devices separately, this saves the number of drive devices, thus reducing the production cost of the product.

[0017] 2. By installing two chain guide rails on the side wall of the furnace body and placing the chain body on the two chain guide rails, the two chain guide rails support the chain body, thereby improving the horizontal positioning accuracy of the chain body and preventing the chain body from collapsing, so as to ensure that the chain body can drive the second transmission sprocket to rotate.

[0018] 3. By connecting the first rotating shaft to the first adjusting block, the first sprocket body is fitted onto the outside of the first rotating shaft, allowing the first sprocket body and the first rotating shaft to rotate relative to each other. The chain body is then fitted onto the outside of the first sprocket body, so that the first adjusting block can drive the first sprocket body to move through the first rotating shaft. This allows the first sprocket body to support the chain body, ensuring that the chain body is in a taut state, and thus ensuring that the chain body can drive the second transmission sprocket to rotate.

[0019] 4. By connecting the second rotating shaft to the second adjusting block, the second sprocket body is fitted onto the outside of the second rotating shaft, allowing the second sprocket body and the second rotating shaft to rotate relative to each other. The second sprocket body is then embedded into the chain body, so that the second adjusting block can drive the second sprocket body to move through the second rotating shaft. This allows the second sprocket body to support the chain body, ensuring that the chain body is in a taut state, and thus ensuring that the chain body can drive the second transmission sprocket to rotate.

[0020] 5. By setting the first cooling channel and the second cooling channel in the mounting base, the first cooling channel is connected to the second cooling channel, and the distance between the first cooling channel and the two bearing bodies is opposite. This allows the cold air to enter between the two bearing bodies through the first cooling channel when the second cooling channel is injected, thereby cooling the two bearing bodies and preventing them from being damaged by heat, thus extending the service life of the bearing bodies.

[0021] 6. By installing the plug bolt on the top of the mounting base and embedding the plug bolt into the first cooling channel, the plug bolt seals the opening of the first cooling channel, thereby preventing the loss of cold air injected into the first cooling channel and improving the user experience of the product.

[0022] 7. By heating the workpiece placed on the transmission roller from above with the first heating wire and heating the workpiece placed on the transmission roller from below with the second heating wire, the workpiece can be heated from multiple angles, thereby making the workpiece heat-treated more evenly and improving the heat treatment effect.

[0023] 8. Since multiple radiant tubes are located on the upper and lower sides of the drive roller, they can heat the workpiece placed on the drive roller from both the upper and lower directions, thereby improving the heat treatment effect on the workpiece. Attached Figure Description

[0024] Figure 1 This is one of the perspective views of a chain-driven roller hearth heating furnace according to this utility model;

[0025] Figure 2 for Figure 1 Enlarged view of a portion at point A;

[0026] Figure 3 This is a second perspective view of a chain-driven roller hearth heating furnace according to this utility model;

[0027] Figure 4 for Figure 2 A magnified view of section B;

[0028] Figure 5This is the third perspective view of a chain-driven roller hearth heating furnace according to this utility model;

[0029] Figure 6 for Figure 1 A magnified view of a portion at point C;

[0030] Figure 7 This is a perspective view of the first sprocket assembly of this utility model;

[0031] Figure 8 This is a perspective view of the second sprocket assembly of this utility model;

[0032] Figure 9 This is a perspective view of the connecting shaft and mounting base of this utility model;

[0033] Figure 10 This is a cross-sectional view of the mounting base of this utility model;

[0034] in, Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0035] 10 Furnace body, 11 Insulation cotton, 12 Drive roller, 13 Mounting plate, 14 Motor, 15 First drive sprocket, 16 First sprocket assembly, 161 First adjusting seat, 162 First lead screw, 163 First adjusting block, 164 First rotating shaft, 165 First sprocket body, 17 Chain body, 18 Second drive sprocket, 19 Second sprocket assembly, 191 Second adjusting seat, 192 Second lead screw, 193 Second adjusting block, 194 Second rotating shaft, 195 Second sprocket body, 20 Chain guide rail, 21 Mounting seat, 22 Connecting shaft, 23 Bearing body, 24 First cooling channel, 25 Second cooling channel, 26 Air nozzle, 27 Plug bolt, 28 First support roller, 29 First heating wire, 30 Second support roller, 31 Second heating wire, 32 Radiant tube, 33 Air valve, 34 Burner, 35 Gas pipe, 36 Air pipe, 37 Exhaust pipe. Detailed Implementation

[0036] The following are specific implementation cases and appendices. Figures 1 to 10 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0037] A chain-driven roller hearth heating furnace, such as Figures 1 to 10As shown, the chain-driven roller hearth furnace includes: a furnace body 10, insulation cotton 11, drive rollers 12, a mounting plate 13, a motor 14, a first drive sprocket 15, a first sprocket assembly 16, a chain body 17, a second drive sprocket 18, and a second sprocket assembly 19; the furnace body 10 is a hollow cavity; the insulation cotton 11 is attached to the inner wall of the furnace body 10; the drive rollers 12 are ceramic bodies, and multiple drive rollers 12 are located inside the furnace body 10, with both ends of the multiple drive rollers 12 passing through the insulation cotton 11 and the side wall of the furnace body 10 in sequence, and both ends of the multiple drive rollers 12 are rotatably connected to the furnace body 10; the mounting plate 13 is fixed on the side wall of the furnace body 10, and the mounting plate 13 is located below the drive rollers 12; the motor 14 is provided with an output shaft, and the motor 14 is mounted on the mounting plate 13. On plate 13; a first drive sprocket 15 is mounted on the outside of the output shaft of motor 14; two first sprocket assemblies 16 are rotatably connected to the side wall of furnace body 10, and the first sprocket assemblies 16 are located above the first drive sprocket 15; the chain body 17 is mounted on the outside of both the two first sprocket assemblies 16 and the first drive sprocket 15; multiple second drive sprockets 18 are respectively connected to multiple drive rollers 12, the multiple second drive sprockets 18 are located on the outside of furnace body 10, and the multiple second drive sprockets 18 are embedded in the chain body 17; two second sprocket assemblies 19 are rotatably connected to the side wall of furnace body 10, the two second sprocket assemblies 19 are located below the second drive sprockets 18, and the two second sprocket assemblies 19 are embedded in the chain body 17.

[0038] By attaching heat insulation cotton 11 to the inner wall of the furnace body 10, the heat insulation of the furnace body 10 is improved. By placing multiple drive rollers 12 inside the furnace body 10, the two ends of the multiple drive rollers 12 pass through the heat insulation cotton 11 and the side wall of the furnace body 10 in sequence, and the two ends of the multiple drive rollers 12 are rotatably connected to the furnace body 10, so that the furnace body 10 supports the multiple drive rollers 12, thereby enabling the multiple drive rollers 12 to rotate inside the furnace body 10, and thus enabling the multiple drive rollers 12 to cooperate in driving the workpiece to move. By fixing the mounting plate 13 to the side wall of the furnace body 10, mounting the motor 14 on the mounting plate 13, and fitting the first transmission sprocket 15 onto the outside of the output shaft of the motor 14, the mounting plate 13 supports the motor 14, thereby enabling the motor 14 to drive the first transmission sprocket 15 to rotate. By rotatably connecting the two first sprocket assemblies 16 to the side wall of the furnace body 10, and simultaneously fitting the chain body 17 onto the outside of both the two first sprocket assemblies 16 and the first transmission sprocket 15, the two first sprocket assemblies 16 and the first transmission sprocket 15 are connected. The first drive sprocket 15, in conjunction with the first drive sprocket 15, supports the chain body 17, enabling the chain body 17 to move when the motor 14 drives the first drive sprocket 15 to rotate. Multiple second drive sprockets 18 are connected to multiple drive pipes and embedded within the chain body 17, so that when the first drive sprocket 15 drives the chain body 17, the chain body 17 simultaneously drives the multiple second drive sprockets 18 to rotate, thereby driving the drive roller 12 to rotate and providing power for its rotation. Two second sprocket assemblies 19 are rotatably connected to the side wall of the furnace body 10 and embedded within the chain body 17, enabling the furnace body 10 to support the two second sprocket assemblies 19, which in turn support the chain body 17, ensuring the chain body 17 is taut and thus enabling it to drive the second drive sprockets 18 to rotate.

[0039] With the above structure, by rotatably connecting the two first sprocket assemblies 16 to the side wall of the furnace body 10, the first transmission sprocket 15 is sleeved on the outside of the output shaft of the motor 14, and the chain body 17 is simultaneously sleeved on the outside of the first transmission sprocket 15 and the two first sprocket assemblies 16, so that the first transmission sprocket 15 and the two first sprocket assemblies 16 cooperate to support the chain body 17. Thus, when the motor 14 drives the first transmission sprocket 15 to rotate, the first transmission sprocket 15 and the two first sprocket assemblies 16 cooperate to drive the chain body 17 to move. By connecting multiple second transmission sprockets 18 to multiple transmission rollers 12 respectively, and embedding the multiple second transmission sprockets 18 into the chain body 17, when the chain body 17 moves, the chain body 17 can simultaneously drive the multiple second transmission sprockets 18 to rotate, thereby simultaneously driving the multiple transmission rollers 12 to rotate. Compared with connecting multiple transmission rollers 12 to multiple drive devices respectively, the number of drive devices can be saved, thereby reducing the production cost of the product.

[0040] Specifically, the width of the furnace body 10 is greater than or equal to 2.75 meters. Due to the wide width of the furnace body 10, a greater number of drive rollers 12 need to be installed inside the furnace body 10. By embedding multiple second drive sprockets 18 into the chain body 17 and connecting the second drive sprockets 18 to the drive rollers 12, the chain body 17 can drive multiple drive rollers 12 to rotate through the multiple second drive sprockets 18, thereby accommodating a greater number of drive rollers 12 and improving the user experience of the product.

[0041] Specifically, the chain body 17 is a double-layer chain, with two adjacent second drive sprockets 18 staggered to avoid interference between the two second drive sprockets 18, while ensuring that the two adjacent second drive sprockets 18 are simultaneously embedded in the chain body 17.

[0042] In embodiments of this utility model, such as Figures 1 to 9 As shown, the chain-driven roller hearth furnace also includes: chain guide rails 20; two chain guide rails 20 are installed on the side wall of the furnace body 10, and the chain body 17 is placed on the two chain guide rails 20.

[0043] By installing two chain guide rails 20 on the side wall of the furnace body 10 and placing the chain body 17 on the two chain guide rails 20, the two chain guide rails 20 support the chain body 17, thereby improving the positional accuracy of the chain body 17 in the horizontal direction. At the same time, it prevents the chain body 17 from collapsing, ensuring that the chain body 17 can drive the second transmission sprocket 18 to rotate.

[0044] In embodiments of this utility model, such as Figures 1 to 9As shown, the first sprocket assembly 16 includes: a first adjusting seat 161, a first lead screw 162, a first adjusting block 163, a first rotating shaft 164, and a first sprocket body 165; the first adjusting seat 161 is provided with a first adjusting groove, and the first adjusting seat 161 is fixed to the side wall of the furnace body 10; the outer wall of the first lead screw 162 is provided with a first external thread, the first lead screw 162 is located in the first adjusting groove, and the first lead screw 162 is rotatably connected to the first adjusting seat 161; the first adjusting block 163 is provided with a first external thread. A threaded hole is provided with a first internal thread. A first adjusting block 163 is embedded in a first adjusting groove, and a first lead screw 162 passes through the first threaded hole of the first adjusting block 163. A first rotating shaft 164 is connected to the first adjusting block 163. A first sprocket body 165 is fitted on the outside of the first rotating shaft 164, and the first sprocket body 165 rotates relative to the first rotating shaft 164. A chain body 17 is fitted on the outside of the first sprocket body 165. The first external thread is adapted to the first internal thread.

[0045] By fixing the first adjusting seat 161 to the side wall of the furnace body 10, placing the first lead screw 162 in the first adjusting groove of the first adjusting seat 161, and rotatably connecting the first lead screw 162 to the first adjusting seat 161, the first adjusting seat 161 supports the first lead screw 162, thereby enabling the first lead screw 162 to rotate within the first adjusting groove. By embedding the first adjusting block 163 into the first adjusting groove and allowing the first lead screw 162 to pass through the first threaded hole of the first adjusting block 163, the first adjusting block 163 and the first lead screw 162 are threadedly connected, thereby enabling the rotation of the first lead screw 162 to drive the first adjusting block 163 to move within the first adjusting groove. By connecting the first rotating shaft 164 to the first adjusting block 163, the first sprocket body 165 is fitted onto the outside of the first rotating shaft 164, allowing the first sprocket body 165 and the first rotating shaft 164 to rotate relative to each other. The chain body 17 is then fitted onto the outside of the first sprocket body 165, so that the first adjusting block 163 can drive the first sprocket body 165 to move via the first rotating shaft 164. This allows the first sprocket body 165 to support the chain body 17, ensuring that the chain body 17 is in a taut state, and thus ensuring that the chain body 17 can drive the second transmission sprocket 18 to rotate.

[0046] In embodiments of this utility model, such as Figures 1 to 9As shown, the second sprocket assembly 19 includes: a second adjusting seat 191, a second lead screw 192, a second adjusting block 193, a second rotating shaft 194, and a second sprocket body 195; the second adjusting seat 191 is provided with a second adjusting groove, and the second adjusting seat 191 is fixed to the side wall of the furnace body 10; the outer wall of the second lead screw 192 is provided with a second external thread, the second lead screw 192 is located in the second adjusting groove, and the second lead screw 192 is rotatably connected to the second adjusting seat 191; the second adjusting block 193 is provided with a second adjusting groove. The second threaded hole has a second internal thread. The second adjusting block 193 is embedded in the second adjusting groove, and the second lead screw 192 passes through the second threaded hole of the second adjusting block 193. The second rotating shaft 194 is connected to the second adjusting block 193. The second sprocket body 195 is fitted on the outside of the second rotating shaft 194. The second sprocket body 195 rotates relative to the second rotating shaft 194, and the second sprocket body 195 is embedded in the chain body 17. The second external thread is adapted to the second internal thread.

[0047] By fixing the second adjusting seat 191 to the side wall of the furnace body 10, placing the second lead screw 192 in the second adjusting groove of the second adjusting seat 191, and rotatably connecting the second lead screw 192 to the second adjusting seat 191, the second adjusting seat 191 supports the second lead screw 192, thereby enabling the second lead screw 192 to rotate within the second adjusting groove. By embedding the second adjusting block 193 into the second adjusting groove and allowing the second lead screw 192 to pass through the second threaded hole of the second adjusting block 193, the second adjusting block 193 and the second lead screw 192 are threadedly connected, thereby enabling the second lead screw 192 to rotate and drive the second adjusting block 193 to move within the second adjusting groove. By connecting the second rotating shaft 194 to the second adjusting block 193, the second sprocket body 195 is fitted onto the outside of the second rotating shaft 194, allowing the second sprocket body 195 and the second rotating shaft 194 to rotate relative to each other. The second sprocket body 195 is then embedded into the chain body 17, so that the second adjusting block 193 can drive the second sprocket body 195 to move through the second rotating shaft 194. This allows the second sprocket body 195 to support the chain body 17, ensuring that the chain body 17 is in a taut state, and thus ensuring that the chain body 17 can drive the second transmission sprocket 18 to rotate.

[0048] In embodiments of this utility model, such as Figures 1 to 10As shown, the chain-driven roller hearth furnace further includes: a mounting base 21, a connecting shaft 22, bearing bodies 23, a first cooling channel 24, a second cooling channel 25, and an air nozzle 26; the mounting base 21 is fixed to the outer wall of the furnace body 10; the connecting shaft 22 passes through the mounting base 21, one end of the connecting shaft 22 is connected to the drive roller 12, and the other end of the connecting shaft 22 is connected to the second drive sprocket 18; two bearing bodies 23 are fitted on the outside of the connecting shaft 22, the two bearing bodies 23 are embedded in the mounting base 21, and there is a gap between the two bearing bodies 23; the first cooling channel 24 is set in the mounting base 21, and the gap between the first cooling channel 24 and the two bearing bodies 23 is opposite; the second cooling channel 25 is set in the mounting base 21, the second cooling channel 25 is connected to the first cooling channel 24, and the second cooling channel 25 is perpendicular to the first cooling channel 24; the air nozzle 26 is installed on the side wall of the mounting base 21, and the air nozzle 26 is connected to the second cooling channel 25.

[0049] By fixing the mounting base 21 to the outer wall of the furnace body 10 and embedding two bearing bodies 23 into the mounting base 21, the furnace body 10 supports the mounting base 21, thereby enabling the mounting base 21 to support the two bearing bodies 23. By connecting one end of the connecting shaft 22 to the transmission roller 12 and the other end of the connecting shaft 22 to the second transmission sprocket 18, the connecting shaft 22 connects the transmission roller 12 and the second transmission sprocket 18 together, thereby enabling the transmission roller 12, the connecting shaft 22, and the second transmission sprocket 18 to rotate synchronously. At the same time, by passing the connecting shaft 22 through the mounting base 21 and fitting the two bearing bodies 23 on the outside of the connecting shaft 22, the mounting base 21 supports the connecting shaft 22 through the two bearing bodies 23, thereby improving the stability of the rotation of the connecting shaft 22. By arranging the first cooling channel 24 and the second cooling channel 25 within the mounting base 21, connecting the first cooling channel 24 and the second cooling channel 25, and ensuring the distance between the first cooling channel 24 and the two bearing bodies 23 is relatively equal, when cold air is injected into the second cooling channel 25, the cold air can enter between the two bearing bodies 23 through the first cooling channel 24, thereby cooling the two bearing bodies 23 and preventing damage due to overheating, thus extending the service life of the bearing bodies 23. By installing the air nozzle 26 on the side wall of the mounting base 21 and connecting the air nozzle 26 to the second cooling channel 25, an air source can be connected to the second cooling channel 25 through the air nozzle 26, facilitating the injection of cold air into the second cooling channel 25.

[0050] In embodiments of this utility model, such as Figures 1 to 9As shown, the chain-driven roller hearth furnace also includes: a plug bolt 27; the plug bolt 27 is installed on the top of the mounting base 21 and is embedded in the first cooling channel 24; wherein, the two ends of the connecting shaft 22 are hexagonal.

[0051] By installing the plug bolt 27 on the top of the mounting base 21 and embedding it into the first cooling channel 24, the plug bolt 27 seals the opening of the first cooling channel 24, thereby preventing the loss of cold air injected into the first cooling channel 24 and improving the user experience. By setting both ends of the connecting shaft 22 to hexagonal shapes to facilitate connection between the connecting shaft 22 and the transmission roller 12 and the second transmission sprocket 18, quick disassembly of the product is achieved, further improving the user experience.

[0052] In embodiments of this utility model, such as Figures 1 to 9 As shown, the chain-driven roller hearth furnace further includes: a first support roller 28, a first heating wire 29, a second support roller 30, and a second heating wire 31; multiple first support rollers 28 are located inside the furnace body 10, with both ends of the multiple first support rollers 28 passing through heat insulation cotton 11, and both ends of the multiple first support rollers 28 are connected to the furnace body 10, and the multiple first support rollers 28 are located above multiple drive rollers 12; multiple first heating wires 29 are respectively fitted on the outside of the multiple first support rollers 28, and the multiple first heating wires 29 sequentially pass through heat insulation cotton 11. 1 and furnace body 10, and multiple first heating wires 29 are electrically connected to a power source; multiple second support rollers 30 are located inside the furnace body 10, with both ends of the multiple second support rollers 30 passing through heat insulation cotton 11, and both ends of the multiple second support rollers 30 are connected to the furnace body 10, and the multiple second support rollers 30 are located below multiple drive rollers 12; multiple second heating wires 31 are respectively fitted on the outside of the multiple second support rollers 30, and the multiple second heating wires 31 pass through the heat insulation cotton 11 and the furnace body 10 in sequence, and the multiple second heating wires 31 are electrically connected to a power source.

[0053] By passing both ends of multiple first support rollers 28 through the heat insulation cotton 11 and connecting both ends of multiple first support rollers 28 to the furnace body 10, the furnace body 10 supports multiple first support rollers 28, thereby improving the stability of multiple first support rollers 28; by fitting a first heating wire 29 on the outside of the first support roller 28, passing the first heating wire 29 through the heat insulation cotton 11 and the furnace body 10 in sequence, and connecting the first heating wire 29 to the power source, the first support roller 28 supports the first heating wire 29, thereby enabling the power source to supply power to the first heating wire 29, so that the first heating wire 29 heats up, thereby enabling the first heating wire 29 to heat the workpiece placed on the transmission roller 12 from above. By passing both ends of multiple second support rollers 30 through the heat insulation cotton 11 and connecting both ends of multiple second support rollers 30 to the furnace body 10, the furnace body 10 supports multiple second support rollers 30, thereby improving the stability of multiple second support rollers 30; by fitting a second heating wire 31 on the outside of the second support rollers 30, passing the second heating wire 31 through the heat insulation cotton 11 and the furnace body 10 in sequence, and connecting the second heating wire 31 to the power source, the second support rollers 30 support the second heating wire 31, thereby enabling the power source to supply power to the second heating wire 31, so that the second heating wire 31 heats up, thereby enabling the second heating wire 31 to heat the workpiece placed on the transmission roller 12 from below.

[0054] By employing the above structure, the first heating wire 29 heats the workpiece placed on the transmission roller 12 from above, and the second heating wire 31 heats the workpiece placed on the transmission roller 12 from below, thereby achieving heating of the workpiece from multiple angles, which makes the workpiece heat-treated more evenly and improves the heat treatment effect of the workpiece.

[0055] In embodiments of this utility model, such as Figures 1 to 9As shown, the chain-driven roller hearth furnace also includes: radiant tubes 32, air valves 33, burners 34, gas pipes 35, air pipes 36, and exhaust pipes 37; the radiant tubes 32 are hollow cavities, and multiple radiant tubes 32 are located inside the furnace body 10. Both ends of the multiple radiant tubes 32 pass through the insulation cotton 11. One end of the radiant tube 32 is fixed to one inner wall of the furnace body 10, and the other end of the radiant tube 32 passes through another inner wall of the furnace body 10. The multiple radiant tubes 32 are located on the upper and lower sides of the drive roller 12, respectively; multiple air valves 33 are installed in the furnace body 10. On the outside of the furnace body 10, multiple air valves 33 are connected to multiple radiant tubes 32 respectively; multiple burners 34 are installed on the outside of multiple air valves 33 respectively, and the output ends of multiple burners 34 are connected to multiple air valves 33 respectively; gas pipe 35 is installed on the outside of the furnace body 10 and is connected to multiple burners 34; air pipe 36 is installed on the outside of the furnace body 10 and is connected to multiple air valves 33; exhaust pipe 37 is installed on the outside of the furnace body 10 and is connected to multiple air valves 33.

[0056] By passing both ends of the radiant tube 32 through the heat insulation cotton 11, one end of the radiant tube 32 is fixed to one inner wall of the furnace body 10, and the other end of the radiant tube 32 passes through the other inner wall of the furnace body 10, so that the furnace body 10 supports the radiant tube 32; by installing the air pipe 36 and the exhaust pipe 37 on the outside of the furnace body 10 and connecting the air pipe 36 and the exhaust pipe 37 to the air valve 33, so that the furnace body 10 supports the air pipe 36 and the exhaust pipe 37, thereby enabling the air in the air pipe 36 to enter the air valve 33, and the exhaust gas generated in the air valve 33 to be discharged through the exhaust pipe 37. By installing the air valve 33 on the outside of the furnace body 10 and connecting it to the radiant tube 32, the furnace body 10 supports the air valve 33. By installing the burner 34 on the outside of the air valve 33 and connecting its output end to the air valve 33, and connecting the gas pipe 35 to the burner 34, the gas in the gas pipe 35 can flow into the burner 34, thus mixing the gas with the air flowing into the air valve 33. Simultaneously, the burner 34 ignites the gas to generate heat, which flows into the radiant tube 32, allowing the radiant tube 32 to dissipate heat. Since multiple radiant tubes 32 are located on the upper and lower sides of the drive roller 12, they can heat the workpiece placed on the drive roller 12 from both above and below, improving the heat treatment effect on the workpiece.

[0057] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0058] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chain-driven roller hearth heating furnace, characterized in that, The chain-driven roller hearth heating furnace includes: Furnace body, wherein the furnace body is a hollow cavity; Thermal insulation cotton is attached to the inner wall of the furnace body; The transmission roller is a ceramic body. Multiple transmission rollers are located inside the furnace body. The two ends of the multiple transmission rollers pass through the heat insulation cotton and the side wall of the furnace body in sequence, and the two ends of the multiple transmission rollers are rotatably connected to the furnace body. Mounting plate, the mounting plate is fixed to the side wall of the furnace body and the mounting plate is located below the drive roller; An electric motor, which has an output shaft, is mounted on the mounting plate; The first transmission sprocket is mounted on the outside of the output shaft of the motor; The first sprocket assembly, two first sprocket assemblies are rotatably connected to the side wall of the furnace body, and the first sprocket assembly is located above the first drive sprocket; The chain body is simultaneously fitted onto the outside of the two first sprocket assemblies and the first drive sprocket; The second drive sprocket, a plurality of the second drive sprockets are respectively connected to a plurality of the drive rollers, the plurality of the second drive sprockets are located on the outside of the furnace body, and the plurality of the second drive sprockets are embedded in the chain body; The second sprocket assembly consists of two sprocket assemblies that are rotatably connected to the side wall of the furnace body. The two second sprocket assemblies are located below the second drive sprocket and are embedded in the chain body.

2. A chain-driven roller hearth furnace according to claim 1, wherein, The chain-driven roller hearth heating furnace also includes: The chain guide rails are installed on the side wall of the furnace body, and the chain body is placed on the two chain guide rails.

3. A chain-driven roller hearth furnace as claimed in claim 2, wherein, The first sprocket assembly includes: A first adjusting seat, wherein a first adjusting groove is provided in the first adjusting seat, and the first adjusting seat is fixed on the side wall of the furnace body; The first lead screw has a first external thread on its outer wall, is located in the first adjusting groove, and is rotatably connected to the first adjusting seat. A first adjusting block is provided with a first threaded hole, and a first internal thread is provided in the first threaded hole. The first adjusting block is embedded in the first adjusting groove, and the first lead screw passes through the first threaded hole of the first adjusting block. A first rotating shaft is connected to the first adjusting block; The first sprocket body is fitted on the outside of the first rotating shaft, the first sprocket body rotates relative to the first rotating shaft, and the chain body is fitted on the outside of the first sprocket body; The first external thread is adapted to the first internal thread.

4. A chain-driven roller hearth furnace as claimed in claim 3, wherein, The second sprocket assembly includes: The second adjusting seat has a second adjusting groove inside and is fixed to the side wall of the furnace body. The second lead screw has a second external thread on its outer wall, is located in the second adjusting groove, and is rotatably connected to the second adjusting seat. The second adjusting block has a second threaded hole and a second internal thread. The second adjusting block is embedded in the second adjusting groove, and the second lead screw passes through the second threaded hole of the second adjusting block. The second rotating shaft is connected to the second adjusting block; The second sprocket body is fitted onto the outside of the second shaft, the second sprocket body rotates relative to the second shaft, and the second sprocket body is embedded in the chain body; The second external thread is adapted to the second internal thread.

5. A chain-driven roller hearth furnace as defined in claim 1, wherein, The chain-driven roller hearth heating furnace also includes: Mounting base, the mounting base being fixed to the outer wall of the furnace body; A connecting shaft passes through the mounting base, one end of the connecting shaft is connected to the transmission roller, and the other end of the connecting shaft is connected to the second transmission sprocket; The bearing body consists of two bearing bodies fitted onto the outside of the connecting shaft, the two bearing bodies being embedded in the mounting base, and a gap between the two bearing bodies. A first cooling channel is disposed within the mounting base, and the distance between the first cooling channel and the two bearing bodies is opposite. The second cooling channel is disposed within the mounting base and is connected to the first cooling channel, and is perpendicular to the first cooling channel; An air nozzle is mounted on the side wall of the mounting base and is connected to the second cooling channel.

6. A chain-driven roller hearth furnace as claimed in claim 5, wherein, The chain-driven roller hearth heating furnace also includes: A plug bolt is installed on the top of the mounting base and is embedded in the first cooling channel; The two ends of the connecting shaft are hexagonal.

7. A chain-driven roller hearth furnace as defined in claim 1, wherein, The chain-driven roller hearth heating furnace also includes: First support roller, multiple first support rollers are located inside the furnace body, the two ends of multiple first support rollers pass through the heat insulation cotton, the two ends of multiple first support rollers are connected to the furnace body, and the multiple first support rollers are located above multiple drive rollers; The first heating wire, and multiple first heating wires are respectively fitted on the outside of multiple first support rollers. The multiple first heating wires pass through the heat insulation cotton and the furnace body in sequence, and the multiple first heating wires are electrically connected to the power supply. Second support rollers, multiple second support rollers are located inside the furnace body, the two ends of multiple second support rollers pass through the heat insulation cotton, the two ends of multiple second support rollers are connected to the furnace body, and the multiple second support rollers are located below multiple drive rollers; The second heating wires are respectively mounted on the outside of the second support rollers. The second heating wires pass through the insulation cotton and the furnace body in sequence, and the second heating wires are electrically connected to the power source.

8. A chain-driven roller hearth heating furnace according to claim 1, characterized in that, The chain-driven roller hearth heating furnace also includes: The radiant tube is a hollow cavity. Multiple radiant tubes are located inside the furnace body. Both ends of the multiple radiant tubes pass through the heat insulation cotton. One end of the radiant tube is fixed to one inner wall of the furnace body, and the other end of the radiant tube passes through another inner wall of the furnace body. The multiple radiant tubes are located on the upper and lower sides of the drive roller, respectively. Air valves, a plurality of the air valves are installed on the outside of the furnace body, and the plurality of air valves are respectively connected to a plurality of the radiant tubes; The burners are respectively installed on the outside of the multiple air valves, and the output terminals of the multiple burners are respectively connected to the multiple air valves; A gas pipe is installed on the outside of the furnace body and is connected to a plurality of the burners; An air pipe is installed on the outside of the furnace body and is connected to a plurality of air valves; An exhaust pipe is installed on the outside of the furnace body and is connected to a plurality of air valves.

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