Double-layer gas heating furnace

Abstract

The utility model provides a double-layer gas heating furnace, and belongs to the technical field of heating furnaces. The double-layer gas heating furnace comprises a furnace box, a first gas heating assembly, a first transmission roller assembly, a first bevel gear, a first supporting beam, a first rotating shaft, a second bevel gear, a tray, a second transmission roller assembly, a third bevel gear, a second supporting beam, a second rotating shaft, a fourth bevel gear and a second gas heating assembly. The tray is mounted in the furnace box, and the tray is located below the multiple first transmission roller assemblies, so that oxide skin and impurities generated by heating of workpieces placed on the multiple first transmission roller assemblies can fall into the tray; therefore, oxide skin and impurities are prevented from interfering with the workpieces placed on the multiple second transmission roller assemblies, and the heat treatment machining quality of the workpieces is improved.

Description

Technical Field

[0001] This utility model belongs to the field of heating furnace technology, specifically relating to a double-layer gas-fired heating furnace. Background Technology

[0002] In related technologies, when heat-treating workpieces in a heating furnace, in order to improve the efficiency of heat treatment, two conveying mechanisms are usually installed in the heating furnace, and two workpieces are placed on the two conveying mechanisms respectively, so that the heating furnace can heat-treat two workpieces at the same time.

[0003] The prior art (authorization announcement number: CN207891252U) discloses a tempered glass heating furnace with a double-layer structure, including a heating furnace body, a resistance wire layer, glass, a motor, and a heat insulation layer. One side of the heating furnace body has an upper inlet and a lower inlet, and the other side of the heating furnace body has an upper outlet and a lower outlet symmetrically arranged. The heating furnace body contains two sets of rollers, upper and lower. One side of each roller is sleeved to one side of the heating furnace body via a second bushing, and the other side of each roller is shaft-connected to a roller drive shaft via a first bushing. One end of the roller drive shaft is sleeved to the other side of the heating furnace body via a third bushing. A third pulley is provided on the roller drive shaft. Each set of rollers is connected by a second belt drive. Each set of roller drive shafts near the upper outlet has a second pulley in the same position. A motor is located on one side of the heating furnace body. The heating furnace body contains a resistance wire layer, and the heat insulation layer is welded to the inner side of the inner wall.

[0004] In this prior art, when a workpiece is heat-treated, the oxide scale and impurities generated by the heating of the upper workpiece easily fall onto the lower workpiece, thereby reducing the quality of the heat treatment process. Utility Model Content

[0005] To address the problem in existing technologies where oxide scale and impurities generated on the upper workpiece during heat treatment easily fall onto the lower workpiece, thus reducing the quality of the heat treatment process, this invention provides a double-layer gas-fired furnace. This furnace employs a tray installed inside the furnace chamber, positioned below multiple first drive roller assemblies. This allows oxide scale and impurities generated on the workpieces placed on the first drive roller assemblies to fall into the tray, preventing interference between the oxide scale and impurities and the workpieces placed on the second drive roller assemblies, thereby improving the quality of the heat treatment process. The specific technical solution is as follows:

[0006] A double-layer gas-fired furnace includes: a furnace box, a first gas-fired heating assembly, a first transmission roller assembly, a first helical gear, a first support beam, a first rotating shaft, a second helical gear, a tray, a second transmission roller assembly, a third helical gear, a second support beam, a second rotating shaft, a fourth helical gear, and a second gas-fired heating assembly; the furnace box is a hollow cavity; two first gas-fired heating assemblies are located inside the furnace box and mounted on the top of the furnace box; multiple first transmission roller assemblies are located inside the furnace box, below the two first gas-fired heating assemblies, and their ends are rotatably connected to the side walls of the furnace box; multiple first helical gears are located outside the furnace box and are respectively connected to the multiple first transmission roller assemblies; a first receiving groove is provided inside the first support beam, the first support beam is mounted on the outside of one side wall of the furnace box, and the first support beam is located below the multiple first helical gears; a first rotating shaft is located inside the first receiving groove and is rotatably connected to the first support beam; multiple second transmission roller assemblies... A helical gear is fitted on the outside of the first rotating shaft, and multiple second helical gears mesh with multiple first helical gears respectively; the tray is a hollow cavity with an opening at the top, the tray is installed inside the furnace box, and the tray is located below multiple first drive roller assemblies; multiple second drive roller assemblies are located inside the furnace box, multiple second drive roller assemblies are located below the tray, and the two ends of multiple second drive roller assemblies are rotatably connected to the two side walls of the furnace box; multiple third helical gears are located on the outside of the furnace box, and multiple third helical gears are connected to multiple second drive roller assemblies respectively; a second receiving groove is provided inside the second support beam, the second support beam is installed on the outside of the other side wall of the furnace box, and the second support beam is located below multiple third helical gears; a second rotating shaft is located in the second receiving groove, and the second rotating shaft is rotatably connected to the second support beam; multiple fourth helical gears are fitted on the outside of the second rotating shaft, and multiple fourth helical gears mesh with multiple third helical gears respectively; two second gas heating assemblies are installed inside the furnace box, and two second gas heating assemblies are located below multiple second drive roller assemblies.

[0007] In addition, the double-layer gas-fired 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 first transmission roller assembly includes: a first transmission roller body, a first support base, a first connecting cylinder, a first bearing, a first limiting screw, and a first connecting shaft; the first transmission roller body is a ceramic body, and both ends of the first transmission roller body pass through the side walls of the furnace box respectively; the first support base is provided with a first support groove, and two first support bases are respectively installed on the outer side of the side walls of the furnace box, and the two first support bases are respectively located below the two ends of the first transmission roller body; the first connecting cylinder is located in a hollow cavity with an opening at one end, and both ends of the first transmission roller body are respectively embedded in the two first connecting cylinders, and both ends of the first transmission roller body are respectively connected to the two first connecting cylinders; two first bearings are respectively connected to the two first connecting cylinders, and the two first bearings are respectively embedded in the two first support grooves; at least two first limiting screws are installed in the first support grooves, and at least two first limiting screws are located on the side of the first bearing away from the furnace box; one end of the first connecting shaft is connected to one of the first connecting cylinders, and the other end of the first connecting shaft is connected to a first helical gear.

[0009] In the above technical solution, the second transmission roller assembly includes: a second transmission roller body, a second support base, a second connecting cylinder, a second bearing, a second limiting screw, and a second connecting shaft; the second transmission roller body is a ceramic body, and both ends of the second transmission roller body pass through the side walls of the furnace box respectively; the second support base is provided with a second support groove, and two second support bases are respectively installed on the outer side of the side walls of the furnace box, and the two second support bases are respectively located below the two ends of the second transmission roller body; the second connecting cylinder is located in a hollow cavity with an opening at one end, and both ends of the second transmission roller body are respectively embedded in the two second connecting cylinders, and both ends of the second transmission roller body are respectively connected to the two second connecting cylinders; two second bearings are respectively connected to the two second connecting cylinders, and the two second bearings are respectively embedded in the two second support grooves; at least two second limiting screws are installed in the second support grooves, and at least two second limiting screws are located on the side of the second bearing away from the furnace box; one end of the second connecting shaft is connected to one of the second connecting cylinders, and the other end of the second connecting shaft is connected to a second helical gear.

[0010] In the above technical solution, the first gas heating assembly includes: a first radiant tube, a first air valve, a first burner, a first gas pipe, and a first air pipe; the first radiant tube is a hollow cavity, located inside the furnace box, and its two ends are respectively connected to the two inner walls of the furnace box; the first air valve is installed on the outside of the furnace box and is connected to the first radiant tube; the first burner is installed on the outside of the first air valve, and its output end is connected to the first air valve; the first gas pipe is installed on the outside of the furnace box and is connected to the burner; the first air pipe is installed on the outside of the furnace box and is connected to the air valve.

[0011] In the above technical solution, the second gas heating assembly includes: a second radiant tube, a second air valve, a second burner, a second gas pipe, and a second air pipe; the second radiant tube is a hollow cavity, located inside the furnace box, and its two ends are respectively connected to the two inner walls of the furnace box; the second air valve is installed on the outside of the furnace box and is connected to the second radiant tube; the second burner is installed on the outside of the second air valve, and its output end is connected to the second air valve; the second gas pipe is installed on the outside of the furnace box and is connected to the burner; the second air pipe is installed on the outside of the furnace box and is connected to the air valve.

[0012] In the above technical solution, the double-layer gas heating furnace further includes: snap-fit ​​components, connecting seats, support plates, and partitions; the snap-fit ​​components are U-shaped, and two snap-fit ​​components are respectively connected to both sides of the tray; the connecting seats are L-shaped, and multiple connecting seats are respectively connected to the two inner walls of the furnace box, and the connecting seats are located on both sides of the tray; multiple support plates are respectively connected to the ends of multiple connecting seats, and multiple support plates are embedded in the snap-fit ​​components; multiple partitions are embedded in the tray, and multiple partitions are connected to the inner wall of the tray.

[0013] In the above technical solution, the double-layer gas heating furnace further includes: insulation cotton, a first cut and a second cut; the insulation cotton is attached to the inner wall of the furnace box; the two first cuts are set on both sides of the insulation cotton, and the two first cuts are wrapped around the outer side of both ends of the first drive roller body; the two second cuts are set on both sides of the insulation cotton, and the two second cuts are wrapped around the outer side of both ends of the second drive roller body.

[0014] In the above technical solution, the double-layer gas heating furnace further includes: a first driving device, a first sprocket, a second sprocket, and a first chain; the first driving device is provided with a first output shaft, and the first driving device is installed at the bottom of the first support beam; the first sprocket is fitted on the outside of the first rotating shaft; the second sprocket is fitted on the outside of the first output shaft of the first driving device, and the second sprocket is located below the first sprocket; the first chain is fitted on the outside of both the first sprocket and the second sprocket.

[0015] In the above technical solution, the double-layer gas heating furnace further includes: a second drive device, a third sprocket, a fourth sprocket, and a second chain; the second drive device is provided with a second output shaft and is installed at the bottom of the second support beam; the third sprocket is fitted on the outside of the second rotating shaft; the fourth sprocket is fitted on the outside of the second output shaft of the second drive device and is located below the third sprocket; the second chain is fitted on the outside of both the third sprocket and the fourth sprocket.

[0016] The advantages of this double-layer gas-fired heating furnace compared with the prior art are as follows:

[0017] 1. By positioning a first gas-fired heating assembly above a plurality of first drive roller assemblies and a second gas-fired heating assembly below a plurality of second drive roller assemblies, the first and second gas-fired heating assemblies can respectively heat the workpieces placed on the first drive roller assemblies and the workpieces placed on the second drive roller assemblies. This allows for simultaneous heat treatment of at least two workpieces within the furnace chamber, thereby improving product processing efficiency. By installing a tray inside the furnace chamber and positioning it below the plurality of first drive roller assemblies, scale and impurities generated by heating on the workpieces placed on the first drive roller assemblies can fall into the tray, preventing interference between scale and impurities and the workpieces placed on the second drive roller assemblies, thus improving the quality of the heat treatment process.

[0018] 2. By connecting two first bearings to two first connecting cylinders respectively, and embedding the two first bearings into the first support grooves of two first support seats respectively, the first support seats support the first drive roller body and the two first connecting cylinders through the first bearings, thereby improving the rotational stability of the first drive roller body. By installing at least two first limiting screws in the first support grooves and positioning the at least two first limiting screws on the side of the first bearing away from the furnace box, the first limiting screws can limit the first bearing, thereby preventing the first bearing from moving away from the furnace box, further improving the rotational stability of the first drive roller body.

[0019] 3. By connecting two second bearings to two second connecting cylinders respectively, and embedding the two second bearings into the second support grooves of the two second support seats respectively, the second support seats support the second drive roller body and the two second connecting cylinders through the second bearings, thereby improving the rotational stability of the second drive roller body. By installing at least two second limiting screws in the second support grooves and positioning them on the side of the second bearing away from the furnace box, the second limiting screws can limit the second bearing, thereby preventing the second bearing from moving away from the furnace box, further improving the rotational stability of the second drive roller body.

[0020] 4. By installing the first burner outside the first air valve, connecting the output end of the first burner to the first air valve, and connecting the first gas pipe to the first burner, the gas in the first gas pipe can flow into the first burner, thereby mixing the gas with the air flowing into the first air valve. At the same time, the first burner ignites the gas to generate heat, which flows into the first radiant tube, thereby enabling the first radiant tube to dissipate heat.

[0021] 5. By installing the second burner outside the second air valve, connecting the output end of the second burner to the second air valve, and connecting the second gas pipe to the second burner, the gas in the second gas pipe can flow into the second burner, thereby mixing the gas with the air flowing into the second air valve. At the same time, the second burner ignites the gas to generate heat, which flows into the second radiant tube, thereby enabling the second radiant tube to dissipate heat.

[0022] 6. By connecting multiple connecting seats to the two inner walls of the furnace box respectively, connecting multiple support plates to the ends of multiple connecting seats respectively, and embedding multiple support plates into the snap-fit ​​parts, the furnace box supports multiple connecting seats. This allows the connecting seats to support the snap-fit ​​parts and the tray through the support plates, thereby reducing the difficulty of picking up the tray and improving the user experience of the product.

[0023] 7. By setting two first cuts on both sides of the insulation cotton and wrapping the two first cuts around the outer sides of both ends of the first drive roller body, the effective working length of the first drive roller body is increased, thereby increasing the product's production capacity; by setting two second cuts on both sides of the insulation cotton and wrapping the two second cuts around the outer sides of both ends of the second drive roller body, the effective working length of the second drive roller body is increased, thereby increasing the product's production capacity.

[0024] 8. By mounting the first sprocket on the outside of the first shaft and mounting the first chain on the outside of both the first and second sprockets, when the first drive device can drive the second sprocket to rotate, the second sprocket can drive the first sprocket to rotate via the first chain, thereby providing power for rotating the first shaft.

[0025] 9. By mounting the third sprocket on the outside of the second shaft and mounting the second chain on the outside of both the third and fourth sprockets, when the second drive device can drive the fourth sprocket to rotate, the fourth sprocket can drive the third sprocket to rotate via the second chain, thereby providing power for rotating the second shaft. Attached Figure Description

[0026] Figure 1 This is one of the perspective views of a double-layer gas-fired heating furnace according to this utility model;

[0027] Figure 2 for Figure 1 A magnified view of part A;

[0028] Figure 3 for Figure 1 A magnified view of section B;

[0029] Figure 4 This is a second perspective view of a double-layer gas-fired heating furnace according to the present invention;

[0030] Figure 5 for Figure 4 A magnified view of a portion at point C;

[0031] Figure 6 for Figure 4 A magnified view of a portion at point D;

[0032] Figure 7 for Figure 4 A magnified view of a portion at point E;

[0033] Figure 8 This is the third perspective view of a double-layer gas-fired heating furnace according to this utility model;

[0034] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0035] 10 Furnace box, 11 First gas heating assembly, 111 First radiant tube, 112 First air valve, 113 First burner, 114 First gas pipe, 115 First air pipe, 12 First drive roller assembly, 121 First drive roller body, 122 First support base, 123 First connecting cylinder, 124 First bearing, 125 First limit screw, 126 First connecting shaft, 13 First helical gear, 14 First support beam, 15 First rotating shaft, 16 Second helical gear, 17 Tray, 18 Second drive roller assembly, 181 Second drive roller body, 182 Second support base, 183 Second connecting cylinder Connecting cylinder, 184 Second bearing, 185 Second limit screw, 186 Second connecting shaft, 19 Third helical gear, 20 Second support beam, 21 Second rotating shaft, 22 Fourth helical gear, 23 Second gas heating assembly, 231 Second radiant tube, 232 Second air valve, 233 Second burner, 234 Second gas pipe, 235 Second air pipe, 24 Clip-on piece, 25 Connecting seat, 26 Support plate, 27 Partition plate, 28 Insulation cotton, 29 First cut, 30 Second cut, 31 First drive device, 35 Second drive device, 36 Third sprocket, 37 Fourth sprocket, 38 Second chain. Detailed Implementation

[0036] The following are specific implementation cases and appendices. Figures 1 to 8 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0037] A double-layer gas-fired heating furnace, such as Figures 1 to 8As shown, the double-layer gas-fired furnace includes: a furnace box 10, a first gas-fired heating assembly 11, a first transmission roller assembly 12, a first helical gear 13, a first support beam 14, a first rotating shaft 15, a second helical gear 16, a tray 17, a second transmission roller assembly 18, a third helical gear 19, a second support beam 20, a second rotating shaft 21, a fourth helical gear 22, and a second gas-fired heating assembly 23; the furnace box 10 is a hollow cavity; two first gas-fired heating assemblies 11 are located inside the furnace box 10, and the two first gas-fired heating assemblies 11 are installed on the top of the furnace box 10; multiple first transmission roller assemblies 12 are located inside the furnace box 10, and multiple first transmission roller assemblies 13 are installed on the top of the furnace box 10. A drive roller assembly 12 is located below two first gas heating assemblies 11, and both ends of the plurality of first drive roller assemblies 12 are rotatably connected to the side walls of the furnace box 10; a plurality of first helical gears 13 are located on the outside of the furnace box 10, and the plurality of first helical gears 13 are respectively connected to the plurality of first drive roller assemblies 12; a first receiving groove is provided in the first support beam 14, the first support beam 14 is installed on the outside of one side wall of the furnace box 10, and the first support beam 14 is located below the plurality of first helical gears 13; a first rotating shaft 15 is located in the first receiving groove, and the first rotating shaft 15 is rotatably connected to the first support beam 14; a plurality of second helical gears 14 are rotatably connected to the first support beam 14; a plurality of second helical gears 15 ... Gear 16 is fitted on the outside of the first rotating shaft 15, and multiple second helical gears 16 mesh with multiple first helical gears 13 respectively; tray 17 is a hollow cavity with an opening at the top, tray 17 is installed inside the furnace box 10, and tray 17 is located below multiple first drive roller assemblies 12; multiple second drive roller assemblies 18 are located inside the furnace box 10, multiple second drive roller assemblies 18 are located below tray 17, and the two ends of multiple second drive roller assemblies 18 are rotatably connected to the side walls of the furnace box 10; multiple third helical gears 19 are located on the outside of the furnace box 10, and multiple third helical gears 19 mesh with multiple second drive rollers respectively. The components 18 are connected; a second receiving groove is provided in the second support beam 20, the second support beam 20 is installed on the outside of the other side wall of the furnace box 10, and the second support beam 20 is located below a plurality of third helical gears 19; the second rotating shaft 21 is located in the second receiving groove, and the second rotating shaft 21 is rotatably connected to the second support beam 20; a plurality of fourth helical gears 22 are fitted on the outside of the second rotating shaft 21, and the plurality of fourth helical gears 22 respectively mesh with a plurality of third helical gears 19; two second gas heating components 23 are installed in the furnace box 10, and the two second gas heating components 23 are located below a plurality of second transmission roller components 18.

[0038] By installing two first gas heating components 11 on the top of the furnace box 10, connecting the two ends of multiple first transmission roller assemblies 12 to the rotating shafts of the two side walls of the furnace box 10, and positioning the multiple first transmission roller assemblies 12 below the two first gas heating components 11, the furnace box 10 supports the two first gas heating components 11 and the multiple first transmission roller assemblies 12, thereby enabling the multiple first transmission roller assemblies 12 to rotate within the furnace box 10, and thus enabling the first gas heating components 11 to heat the workpieces placed on the multiple first transmission roller assemblies 12; by positioning multiple first helical gears 13 outside the furnace box 10 and connecting the multiple first helical gears 13 to the multiple first transmission roller assemblies 12 respectively, the first helical gears 13 and the first transmission roller assemblies 12 rotate synchronously. By installing the first support beam 14 on the outer side of one side wall of the furnace box 10, the first rotating shaft 15 is located in the first receiving groove, and the first rotating shaft 15 is rotatably connected to the first support beam 14, so that the first receiving groove can accommodate the first rotating shaft 15, thereby enabling the first support beam 14 to support the first rotating shaft 15, and thus enabling the first rotating shaft 15 to rotate within the first receiving groove; by mounting multiple second helical gears 16 on the outer side of the first rotating shaft 15, and meshing the multiple second helical gears 16 with multiple first helical gears 13 respectively, the first rotating shaft 15 can drive the multiple second helical gears 16 to rotate, thereby enabling the second helical gears 16 to mesh with the first helical gears 13 to rotate, and thus driving the first transmission roller assembly 12 to rotate. By installing a tray 17 inside the furnace box 10 and positioning it below multiple first drive roller assemblies 12, the furnace box 10 supports the tray 17, enabling the tray 17 to collect scale and impurities falling from workpieces placed on the multiple first drive roller assemblies 12. By positioning multiple second drive roller assemblies 18 below the tray 17 and rotatably connecting both ends of the multiple second drive roller assemblies 18 to the side walls of the furnace box 10, the furnace box 10 supports the multiple second drive roller assemblies 18, enabling the second drive roller assemblies 18 to rotate within the furnace box 10. By positioning multiple third helical gears 19 outside the furnace box 10 and connecting the multiple third helical gears 19 to the multiple second drive roller assemblies 18 respectively, the third helical gears 19 and the second drive roller assemblies 18 rotate synchronously.By installing the second support beam 20 on the outside of the other side wall of the furnace box 10, placing the second rotating shaft 21 in the second receiving groove, and rotatably connecting the second rotating shaft 21 with the second support beam 20, the second receiving groove can accommodate the second rotating shaft 21, thereby enabling the second support beam 20 to support the second rotating shaft 21, and thus enabling the second rotating shaft 21 to rotate within the second receiving groove; by mounting multiple fourth helical gears 22 on the outside of the second rotating shaft 21, and having the multiple fourth helical gears 22 mesh with multiple third helical gears 19 respectively, when the second rotating shaft 21 is rotated, the second rotating shaft 21 can drive the multiple fourth helical gears 22 to rotate, thereby enabling the fourth helical gears 22 to mesh with the third helical gears 19 to rotate, and thus driving the second transmission roller assembly 18 to rotate. By installing two second gas heating components 23 inside the furnace box 10 and positioning them below a plurality of second drive roller assemblies 18, the furnace box 10 supports the two second gas heating components 23, thereby enabling the two second gas heating components 23 to heat the workpieces placed on the plurality of second drive roller assemblies 18 from below.

[0039] In practical use, the workpieces are first placed on the first transmission roller assembly 12 and the second transmission roller assembly 18 respectively. Then, the first gas heating assembly 11 and the second gas heating assembly 23 are heated, so that the first gas heating assembly 11 heats the workpiece placed on the first transmission roller assembly 12, and the second gas heating assembly 23 heats the workpiece placed on the second transmission roller assembly 18, thereby allowing both workpieces to be heat-treated simultaneously to improve the heat treatment efficiency. After the heat treatment of the two workpieces is completed, the first rotating shaft 15 is rotated, causing the first rotating shaft 15 to drive multiple first helical gears 13 and multiple second helical gears 16 to rotate, thereby driving multiple first transmission roller assemblies 12 to rotate, and thus moving the workpiece placed on the first transmission roller assembly 12 to complete the unloading process of the workpiece. At the same time, the second rotating shaft 21 is rotated, causing the second rotating shaft 21 to drive multiple third helical gears 19 and multiple fourth helical gears 22 to rotate, thereby driving the second transmission roller assembly 18 to rotate, and thus moving the workpiece placed on the first transmission roller assembly 12 to complete the unloading process of the workpiece.

[0040] By employing the above structure, with the first gas heating assembly 11 positioned above the plurality of first drive roller assemblies 12 and the second gas heating assembly 23 positioned below the plurality of second drive roller assemblies 18, the first gas heating assembly 11 and the second gas heating assembly 23 can respectively heat the workpieces placed on the first drive roller assembly 12 and the workpieces placed on the second drive roller assembly 18. This allows at least two workpieces to be heat-treated simultaneously within the furnace chamber 10, thereby improving product processing efficiency. By installing the tray 17 inside the furnace chamber 10 and positioning the tray 17 below the plurality of first drive roller assemblies 12, oxide scale and impurities generated on the workpieces placed on the plurality of first drive roller assemblies 12 due to heating can fall into the tray 17, thus preventing interference between the oxide scale and impurities and the workpieces placed on the plurality of second drive roller assemblies 18, thereby improving the quality of the heat treatment process.

[0041] In embodiments of this utility model, such as Figures 1 to 8 As shown, the first drive roller assembly 12 includes: a first drive roller body 121, a first support base 122, a first connecting cylinder 123, a first bearing 124, a first limiting screw 125, and a first connecting shaft 126; the first drive roller body 121 is a ceramic body, and its two ends pass through the two side walls of the furnace box 10 respectively; the first support base 122 is provided with a first support groove, and the two first support bases 122 are respectively installed on the outer side of the two side walls of the furnace box 10, and the two first support bases 122 are respectively located below the two ends of the first drive roller body 121; the first connecting cylinder 123 is located in a hollow cavity with an opening at one end, and the first drive roller body 124 is connected to the first connecting shaft 126. The two ends of the moving roller body 121 are respectively embedded in the two first connecting cylinders 123, and the two ends of the first transmission roller body 121 are respectively connected to the two first connecting cylinders 123; the two first bearings 124 are respectively connected to the two first connecting cylinders 123, and the two first bearings 124 are respectively embedded in the two first support grooves; at least two first limiting screws 125 are installed in the first support grooves, and at least two first limiting screws 125 are located on the side of the first bearings 124 away from the furnace box 10; one end of the first connecting shaft 126 is connected to a first connecting cylinder 123, and the other end of the first connecting shaft 126 is connected to the first helical gear 13.

[0042] By installing two first support seats 122 on the outer sides of the two side walls of the furnace box 10, and positioning the two first support seats 122 below the two ends of the first drive roller, the furnace box 10 supports the two first support seats 122, thereby improving the stability of the first support seats 122. By embedding the two ends of the first drive roller body 121 into the two first connecting cylinders 123, and connecting the two ends of the first drive roller body 121 to the two first connecting cylinders 123, the first drive roller body 121 and the two first connecting cylinders 123 rotate synchronously. By connecting the two first bearings 124 to the two first connecting cylinders 123, and embedding the two first bearings 124 into the first support grooves of the two first support seats 122, the first support seats 122 support the first drive roller body 121 and the two first connecting cylinders 123 through the first bearings 124, thereby improving the rotational stability of the first drive roller body 121. By installing at least two first limiting screws 125 in the first support groove and positioning the first bearing 124 on the side away from the furnace box 10, the first limiting screws 125 can limit the first bearing 124, thereby preventing the first bearing 124 from moving away from the furnace box 10 and further improving the rotational stability of the first drive roller body 121; by connecting one end of the first connecting shaft 126 to a first connecting cylinder 123 and connecting the other end of the first connecting shaft 126 to a first helical gear 13, the first connecting cylinder 123 is connected to the first helical gear 13 through the first connecting shaft 126, thereby enabling the first helical gear 13 to rotate synchronously with the first connecting cylinder 123 and the first drive roller body 121.

[0043] In embodiments of this utility model, such as Figures 1 to 8As shown, the second drive roller assembly 18 includes: a second drive roller body 181, a second support base 182, a second connecting cylinder 183, a second bearing 184, a second limiting screw 185, and a second connecting shaft 186; the second drive roller body 181 is a ceramic body, and its two ends pass through the two side walls of the furnace box 10 respectively; the second support base 182 is provided with a second support groove, and the two second support bases 182 are respectively installed on the outer side of the two side walls of the furnace box 10, and the two second support bases 182 are respectively located below the two ends of the second drive roller body 181; the second connecting cylinder 183 is located in a hollow cavity with an opening at one end, and the second drive roller body 181 is connected to the second drive roller body 181. The two ends of the moving roller body 181 are respectively embedded in the two second connecting cylinders 183, and the two ends of the second drive roller body 181 are respectively connected to the two second connecting cylinders 183; the two second bearings 184 are respectively connected to the two second connecting cylinders 183, and the two second bearings 184 are respectively embedded in the two second support grooves; at least two second limiting screws 185 are installed in the second support grooves, and the at least two second limiting screws 185 are located on the side of the second bearings 184 away from the furnace box 10; one end of the second connecting shaft 186 is connected to a second connecting cylinder 183, and the other end of the second connecting shaft 186 is connected to the second helical gear 16.

[0044] By installing two second support seats 182 on the outer sides of the two side walls of the furnace box 10, and positioning them below the two ends of the second drive roller, the furnace box 10 supports the two second support seats 182, thereby improving the stability of the second support seats 182. By embedding both ends of the second drive roller body 181 into the two second connecting cylinders 183, and connecting both ends of the second drive roller body 181 to the two second connecting cylinders 183, the second drive roller body 181 and the two second connecting cylinders 183 rotate synchronously. By connecting two second bearings 184 to the two second connecting cylinders 183, and embedding the two second bearings 184 into the second support grooves of the two second support seats 182, the second support seats 182 support the second drive roller body 181 and the two second connecting cylinders 183 through the second bearings 184, thereby improving the rotational stability of the second drive roller body 181. By installing at least two second limiting screws 185 in the second support groove and positioning them on the side of the second bearing 184 away from the furnace box 10, the second limiting screws 185 can limit the second bearing 184, thereby preventing the second bearing 184 from moving away from the furnace box 10 and further improving the rotational stability of the second drive roller body 181. By connecting one end of the second connecting shaft 186 to a second connecting cylinder 183 and connecting the other end of the second connecting shaft 186 to a second helical gear 16, the second connecting cylinder 183 is connected to the second helical gear 16 through the second connecting shaft 186, thereby enabling the second helical gear 16, the second connecting cylinder 183, and the second drive roller body 181 to rotate synchronously.

[0045] In embodiments of this utility model, such as Figures 1 to 8 As shown, the first gas heating assembly 11 includes: a first radiant tube 111, a first air valve 112, a first burner 113, a first gas pipe 114, and a first air pipe 115; the first radiant tube 111 is a hollow cavity, located inside the furnace box 10, and its two ends are respectively connected to the two inner walls of the furnace box 10; the first air valve 112 is installed on the outside of the furnace box 10 and is connected to the first radiant tube 111; the first burner 113 is installed on the outside of the first air valve 112, and its output end is connected to the first air valve 112; the first gas pipe 114 is installed on the outside of the furnace box 10 and is connected to the burner; the first air pipe 115 is installed on the outside of the furnace box 10 and is connected to the air valve.

[0046] By placing the first radiant tube 111 inside the furnace box 10 and connecting both ends of the first radiant tube 111 to the two inner walls of the furnace box 10 respectively, the furnace box 10 supports the first radiant tube 111. By installing the first air pipe 115 on the outside of the furnace box 10 and connecting the first air pipe 115 to the first air valve 112, the furnace box 10 supports the first air pipe 115, thereby allowing the air in the first air pipe 115 to enter the first air valve 112. By installing the first air valve 112 on the outside of the furnace box 10 and connecting it to the first radiant tube 111, the furnace box 10 supports the first air valve 112. By installing the first burner 113 on the outside of the first air valve 112 and connecting its output end to the first air valve 112, and connecting the first gas pipe 114 to the first burner 113, the gas in the first gas pipe 114 can flow into the first burner 113, thereby mixing the gas with the air flowing into the first air valve 112. At the same time, the first burner 113 ignites the gas to generate heat, which flows into the first radiant tube 111, thus enabling the first radiant tube 111 to dissipate heat.

[0047] In embodiments of this utility model, such as Figures 1 to 8 As shown, the second gas heating assembly 23 includes: a second radiant tube 231, a second air valve 232, a second burner 233, a second gas pipe 234, and a second air pipe 235. The second radiant tube 231 is a hollow cavity located inside the furnace box 10, and its two ends are connected to the two inner walls of the furnace box 10, respectively. The second air valve 232 is installed on the outside of the furnace box 10 and is connected to the second radiant tube 231. The second burner 233 is installed on the outside of the second air valve 232, and its output end is connected to the second air valve 232. The second gas pipe 234 is installed on the outside of the furnace box 10 and is connected to the burner. The second air pipe 235 is installed on the outside of the furnace box 10 and is connected to the air valve.

[0048] By placing the second radiant tube 231 inside the furnace box 10 and connecting both ends of the second radiant tube 231 to the two inner walls of the furnace box 10 respectively, the furnace box 10 supports the second radiant tube 231; by installing the second air pipe 235 on the outside of the furnace box 10 and connecting the second air pipe 235 to the second air valve 232, the furnace box 10 supports the second air pipe 235, thereby enabling the air in the second air pipe 235 to enter the second air valve 232. By installing the second air valve 232 on the outside of the furnace box 10 and connecting it to the second radiant tube 231, the furnace box 10 supports the second air valve 232. By installing the second burner 233 on the outside of the second air valve 232 and connecting its output end to the second air valve 232, and connecting the second gas pipe 234 to the second burner 233, the gas in the second gas pipe 234 can flow into the second burner 233, thereby mixing the gas with the air flowing into the second air valve 232. At the same time, the second burner 233 ignites the gas to generate heat, which flows into the second radiant tube 231, thus enabling the second radiant tube 231 to dissipate heat.

[0049] In embodiments of this utility model, such as Figures 1 to 8 As shown, the double-layer gas-fired heating furnace also includes: a snap-fit ​​component 24, a connecting seat 25, a support plate 26, and a partition plate 27; the snap-fit ​​component 24 is U-shaped, and two snap-fit ​​components 24 are respectively connected to the two sides of the tray 17; the connecting seat 25 is L-shaped, and multiple connecting seats 25 are respectively connected to the two inner walls of the furnace box 10, and the connecting seats 25 are located on both sides of the tray 17; multiple support plates 26 are respectively connected to the ends of multiple connecting seats 25, and multiple support plates 26 are embedded in the snap-fit ​​component 24; multiple partition plates 27 are embedded in the tray 17, and multiple partition plates 27 are connected to the inner wall of the tray 17.

[0050] By connecting two U-shaped snap-fit ​​pieces 24 to the two sides of the tray 17 respectively, the tray 17 can support the two snap-fit ​​pieces 24, thereby enabling the two snap-fit ​​pieces 24 to move synchronously with the tray 17. By connecting multiple connecting seats 25 to the two inner walls of the furnace box 10 respectively, and connecting multiple support plates 26 to the ends of the multiple connecting seats 25 respectively, and embedding the multiple support plates 26 into the snap-fit ​​pieces 24, the furnace box 10 can support the multiple connecting seats 25. This allows the connecting seats 25 to support the snap-fit ​​pieces 24 and the tray 17 through the support plates 26, thereby reducing the difficulty of picking up the tray 17 and improving the user experience. By embedding multiple partitions 27 into the tray 17 and connecting the multiple partitions 27 to the inner walls of the tray 17, the partitions 27 can divide the tray 17 into multiple different areas, while also improving the overall strength of the tray 17.

[0051] In embodiments of this utility model, such as Figures 1 to 8 As shown, the double-layer gas-fired heating furnace also includes: insulation cotton 28, first cut 29 and second cut 30; the insulation cotton 28 is attached to the inner wall of the furnace box 10; the two first cuts 29 are arranged on both sides of the insulation cotton 28, and the two first cuts 29 are arranged around the outer sides of both ends of the first transmission roller body 121; the two second cuts 30 are arranged on both sides of the insulation cotton 28, and the two second cuts 30 are arranged around the outer sides of both ends of the second transmission roller body 181.

[0052] By attaching the insulation cotton 28 to the inner wall of the furnace box 10, the furnace box 10 is insulated, thereby improving its heat insulation performance. By setting two first cuts 29 on both sides of the insulation cotton 28 and wrapping the two first cuts 29 around the outer sides of both ends of the first drive roller body 121, the effective working length of the first drive roller body 121 is increased, thereby increasing the production capacity of the product. By setting two second cuts 30 on both sides of the insulation cotton 28 and wrapping the two second cuts 30 around the outer sides of both ends of the second drive roller body 181, the effective working length of the second drive roller body 181 is increased, thereby increasing the production capacity of the product.

[0053] In embodiments of this utility model, such as Figures 1 to 8 As shown, the double-layer gas-fired heating furnace also includes: a first drive device 31, a first sprocket, a second sprocket, and a first chain; the first drive device 31 is provided with a first output shaft, and the first drive device 31 is installed at the bottom of the first support beam 14; the first sprocket is fitted on the outside of the first rotating shaft 15; the second sprocket is fitted on the outside of the first output shaft of the first drive device 31, and the second sprocket is located below the first sprocket; the first chain is fitted on the outside of both the first sprocket and the second sprocket.

[0054] By mounting the first drive device 31 at the bottom of the first support beam 14 and fitting the second sprocket on the outside of the first output shaft of the first drive device 31, the first support beam 14 supports the first drive device 31, thereby enabling the first drive device 31 to drive the second sprocket to rotate. By fitting the first sprocket on the outside of the first rotating shaft 15 and fitting the first chain on the outside of both the first and second sprockets, when the first drive device 31 drives the second sprocket to rotate, the second sprocket can drive the first sprocket to rotate via the first chain, thereby providing power for rotating the first rotating shaft 15.

[0055] In embodiments of this utility model, such as Figures 1 to 8As shown, the double-layer gas-fired heating furnace also includes: a second drive device 35, a third sprocket 36, a fourth sprocket 37, and a second chain 38; the second drive device 35 is provided with a second output shaft and is installed at the bottom of the second support beam 20; the third sprocket 36 is fitted on the outside of the second rotating shaft 21; the fourth sprocket 37 is fitted on the outside of the second output shaft of the second drive device 35 and is located below the third sprocket 36; the second chain 38 is fitted on the outside of both the third sprocket 36 and the fourth sprocket 37.

[0056] By mounting the second drive device 35 at the bottom of the second support beam 20 and fitting the fourth sprocket 37 onto the outside of the second output shaft of the second drive device 35, the second support beam 20 supports the second drive device 35, thereby enabling the second drive device 35 to drive the fourth sprocket 37 to rotate. By fitting the third sprocket 36 onto the outside of the second shaft 21 and fitting the second chain 38 onto the outside of both the third sprocket 36 and the fourth sprocket 37, when the second drive device 35 can drive the fourth sprocket 37 to rotate, the fourth sprocket 37 can drive the third sprocket 36 to rotate via the second chain 38, thereby providing power for rotating the second shaft 21.

[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 double-layer gas-fired heating furnace, characterized in that, The double-layer gas-fired heating furnace includes: The furnace box is a hollow cavity; The first gas heating assembly, two of the first gas heating assemblies are located inside the furnace box, and the two first gas heating assemblies are installed on the top of the furnace box; The first drive roller assembly, a plurality of the first drive roller assemblies are located inside the furnace box, the plurality of the first drive roller assemblies are located below the two first gas heating assemblies, and the two ends of the plurality of the first drive roller assemblies are rotatably connected to the two side walls of the furnace box; A first helical gear, a plurality of first helical gears are located on the outside of the furnace box, and the plurality of first helical gears are respectively connected to a plurality of first transmission roller assemblies; A first support beam is provided with a first receiving groove. The first support beam is installed on the outer side of one side wall of the furnace box and is located below a plurality of first helical gears. A first rotating shaft is located within the first receiving groove and is rotatably connected to the first support beam. The second helical gear, and a plurality of the second helical gears are mounted on the outside of the first rotating shaft, and the plurality of the second helical gears mesh with the plurality of the first helical gears respectively; The tray is a hollow cavity with an opening at the top, the tray is installed inside the furnace box, and the tray is located below a plurality of the first drive roller assemblies; Second drive roller assembly, multiple second drive roller assemblies are located inside the furnace box, multiple second drive roller assemblies are located below the tray, and the two ends of multiple second drive roller assemblies are rotatably connected to the two side walls of the furnace box; The third helical gear, and the plurality of the third helical gears are located on the outside of the furnace box, and the plurality of the third helical gears are respectively connected to the plurality of the second transmission roller assemblies; The second support beam has a second receiving groove inside it. The second support beam is installed on the outside of the other side wall of the furnace box and is located below the plurality of third helical gears. The second rotating shaft is located in the second receiving groove and is rotatably connected to the second support beam; The fourth helical gear, wherein multiple fourth helical gears are mounted on the outside of the second rotating shaft, and the multiple fourth helical gears respectively mesh with multiple third helical gears; The second gas heating assembly, two of which are installed inside the furnace box, are located below the plurality of second drive roller assemblies.

2. A double-layer gas-fired heating furnace according to claim 1, characterized in that, The first drive roller assembly includes: The first drive roller assembly body is a ceramic body, and its two ends pass through the two side walls of the furnace box respectively. The first support seat has a first support groove inside. The two first support seats are respectively installed on the outer side of the two side walls of the furnace box, and the two first support seats are respectively located below both ends of the body of the first transmission roller assembly. The first connecting cylinder is located in a hollow cavity with an opening at one end. The two ends of the first transmission roller assembly body are respectively embedded in the two first connecting cylinders, and the two ends of the first transmission roller assembly body are respectively connected to the two first connecting cylinders. The first bearing is connected to the two first connecting cylinders respectively, and the two first bearings are respectively embedded in the two first support grooves; First limiting screw, at least two first limiting screws are installed in the first support groove, and at least two first limiting screws are located on the side of the first bearing away from the furnace box; A first connecting shaft, one end of which is connected to a first connecting cylinder, and the other end of which is connected to the first helical gear.

3. A double-layer gas-fired heating furnace according to claim 2, characterized in that, The second drive roller assembly includes: The second drive roller assembly body is a ceramic body, and its two ends pass through the two side walls of the furnace box respectively. The second support seat has a second support groove inside. The two second support seats are respectively installed on the outer side of the two side walls of the furnace box, and the two second support seats are respectively located below both ends of the body of the second transmission roller assembly. The second connecting cylinder is located in a hollow cavity with an opening at one end. The two ends of the second transmission roller assembly body are respectively embedded in the two second connecting cylinders, and the two ends of the second transmission roller assembly body are respectively connected to the two second connecting cylinders. The second bearing is connected to the two second connecting cylinders respectively, and the two second bearings are respectively embedded in the two second support grooves; The second limiting screw, at least two of the second limiting screws are installed in the second support groove, and at least two of the second limiting screws are located on the side of the second bearing away from the furnace box; The second connecting shaft has one end connected to a second connecting cylinder and the other end connected to the second helical gear.

4. A double-layer gas-fired heating furnace according to claim 1, characterized in that, The first gas heating assembly includes: The first radiant tube is a hollow cavity located inside the furnace box, with its two ends connected to the two inner walls of the furnace box respectively. A first air valve is installed on the outside of the furnace box and is connected to the first radiant tube. A first burner is installed outside the first air valve, and the output end of the first burner is connected to the first air valve. A first gas pipe is installed on the outside of the furnace box and is connected to the burner; A first air pipe is installed on the outside of the furnace box and is connected to the air valve.

5. A double-layer gas-fired heating furnace according to claim 4, characterized in that, The second gas heating assembly includes: The second radiant tube is a hollow cavity located inside the furnace box, with its two ends connected to the two inner walls of the furnace box respectively. The second air valve is installed on the outside of the furnace box and is connected to the second radiant tube. The second burner is installed outside the second air valve, and the output end of the second burner is connected to the second air valve; The second gas pipe is installed on the outside of the furnace box and is connected to the burner; The second air pipe is installed on the outside of the furnace box and is connected to the air valve.

6. A double-layer gas-fired heating furnace according to claim 3, characterized in that, The double-layer gas-fired heating furnace also includes: The snap-fit ​​connector is U-shaped, and two snap-fit ​​connectors are respectively connected to the two sides of the tray; The connecting seat is L-shaped, and multiple connecting seats are respectively connected to the two inner walls of the furnace box, and the connecting seats are located on both sides of the tray; Support plates, wherein multiple support plates are respectively connected to the ends of multiple connecting seats, and the multiple support plates are embedded in the snap-fit ​​member; A partition, wherein multiple partitions are embedded within the tray and the multiple partitions are connected to the inner wall of the tray.

7. A double-layer gas-fired heating furnace according to claim 6, characterized in that, The double-layer gas-fired heating furnace also includes: Insulating cotton, which is attached to the inner wall of the furnace box; The first cut is provided on both sides of the insulation cotton, and the two first cuts are arranged around the outer sides of both ends of the first transmission roller assembly body. The second cut is provided on both sides of the insulation cotton and is wrapped around the outer sides of both ends of the second drive roller assembly body.

8. A double-layer gas-fired heating furnace according to claim 1, characterized in that, The double-layer gas-fired heating furnace also includes: A first driving device, the first driving device being provided with a first output shaft, the first driving device being installed at the bottom of the first support beam; The first sprocket is fitted onto the outside of the first shaft; The second sprocket is mounted on the outside of the first output shaft of the first drive device, and the second sprocket is located below the first sprocket; The first chain is fitted onto the outside of both the first sprocket and the second sprocket.

9. A double-layer gas-fired heating furnace according to claim 8, characterized in that, The double-layer gas-fired heating furnace also includes: The second drive device is provided with a second output shaft and is installed at the bottom of the second support beam; The third sprocket is fitted onto the outside of the second shaft; The fourth sprocket is mounted on the outside of the second output shaft of the second drive device, and the fourth sprocket is located below the third sprocket; The second chain is fitted onto the outside of both the third and fourth sprockets.

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