Reverse hot air circulation system of enameled wire oven

Abstract

The invention provides a reverse hot air circulation system of an enameled wire oven, and relates to the technical field of enamelling machines. The reverse hot air circulation system of the enameled wire oven comprises a baking mechanism, the baking mechanism is internally provided with the oven, the discharging end of the oven is coaxially communicated with an air inlet cabin, the feeding end of the oven is coaxially communicated with an air outlet cabin, and a flow equalizing assembly is coaxially and rotationally arranged in the air inlet cabin; a reverse flow assembly is arranged on the side, facing the hearth, of the air inlet bin and comprises air outlet nozzles which are evenly arranged in the circumferential direction, the angles of air outlet sections of the air outlet nozzles are adjustable, an adjusting ring is coaxially arranged on the inner side of the air inlet bin, the adjusting ring is hinged to the multiple air outlet nozzles, and the adjusting ring can axially move on the inner side of the air inlet bin. Hot air flow is evenly distributed in the air inlet cabin, the heat energy utilization rate is improved, meanwhile, the temperature of the cross section in the whole hearth is balanced, the hot air flow and enameled wires running in the hearth are reversed through the air outlet nozzle, and the heat conduction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of enameling machines, and in particular to a reverse hot air circulation system of an enameled wire drying furnace. Background Art

[0002] During the use of the existing enameled wire drying furnace, the enameled wire runs axially at a certain speed inside the drying furnace, and the enameled wire is heated inside the drying furnace. The heat source is treated by active heating and burning a large amount of harmful gases contained in the organic solvent vapor evaporated during the paint film baking process. The circulating air is used to circulate the combustion heat energy into the furnace body, thereby recycling the heat energy.

[0003] However, most existing baking ovens simply transport airflow containing heat energy into the baking oven. The direction and flow path of the airflow in the baking oven have a great impact on the stability of the local temperature of the baking oven, causing certain difficulties in temperature control in the entire baking oven. At the same time, the utilization rate of heat energy is relatively low. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a reverse hot air circulation system for an enameled wire drying furnace, including a baking mechanism and an exhaust gas catalytic combustion device, wherein the baking mechanism has a built-in drying furnace, wherein a heating element is arranged in the drying furnace, and an airflow circulation component is connected to the drying furnace, wherein the airflow circulation component is connected to the exhaust gas catalytic combustion device and transports the hot air generated after combustion to the interior of the drying furnace, wherein the drying furnace adopts a double-layer arrangement, and the heating element is located between the two layers; the discharge end of the drying furnace is coaxially connected to an air inlet cabin, and the feed end of the drying furnace is coaxially connected to an air outlet cabin, and the air inlet cabin and the air outlet cabin are respectively connected to the airflow circulation component; the inlet A flow balancing component is coaxially rotated inside the air chamber, and a plurality of arc-shaped channels are built in the flow balancing component, and the arc-shaped channels change the direction of the air flow; the inner diameter of the air inlet chamber is smaller than the inner diameter of the baking furnace; the inner and outer diameters of the air outlet chamber are the same as the inner and outer diameters of the air inlet chamber; a countercurrent component is provided on the side of the air inlet chamber facing the furnace, and the countercurrent component includes circumferentially uniformly arranged air outlet nozzles, the air outlet nozzles are connected to the side of the air inlet chamber facing the furnace, the air outlet section angle of the air outlet nozzles is adjustable, and an adjustment ring is coaxially provided on the inner side of the air inlet chamber, the adjustment ring and the plurality of air outlet nozzles are hinged, and the adjustment ring can be axially displaced on the inner side of the air inlet chamber.

[0005] Preferably, two ends of the baking mechanism along the axial direction of the baking furnace are feeding and discharging ends, and rectangular channels for cables to pass through are provided on the feeding and discharging ends, and a support plate is fixedly connected to the lower side of the rectangular channel.

[0006] Preferably, the inner layer of the oven is an inner chamber, and a cavity for placing the heating element is left between the inner chamber and the oven.

[0007] Preferably, the air intake chamber includes an air intake shell and a blocking ring, the blocking ring and the interior of the air intake shell constitute an annular cavity, and the blocking ring is provided with a plurality of air outlet holes evenly arranged circumferentially on one side of the blocking ring facing the furnace, and the plurality of air outlet holes and the plurality of air outlet nozzles correspond one to one and are sealed and connected.

[0008] Preferably, the air outlet chamber includes an air outlet shell and a plurality of blocks, an annular cavity is provided in the air outlet shell, and the plurality of blocks are axially and evenly arranged in the annular cavity; the blocks are arranged in a rectangular shape, and the radial outer side of the blocks does not abut against the inner wall of the air outlet shell; a variable diameter air channel is formed between two adjacent blocks.

[0009] Preferably, the air flow circulation component includes at least one air supply member and at least one air outlet member, the air supply member is connected to the air inlet cabin and arranged along the tangential direction of the air inlet cabin, and the air outlet member is connected to the air outlet cabin and arranged along the tangential direction of the air outlet cabin.

[0010] Preferably, the flow equalizing component includes an upper end, a lower end and a plurality of arc-shaped baffles, the upper end is rotatably arranged in the annular cavity between the air intake shell and the blocking ring, the upper end is in the annular cavity facing the side of the air outlet, and the upper end is arranged in an arc shape away from the air outlet, and the arc is convex outward; the lower end is rotatably arranged in the annular cavity between the air intake shell and the blocking ring, the lower end is in the annular cavity away from the side of the air outlet, and the lower end is arranged in an arc shape similar to the upper end on the side facing the upper end, and the arc is concave inward; a plurality of the arc-shaped baffles are circumferentially and evenly fixed between the upper end and the lower end; a plurality of the arc-shaped baffles isolate a plurality of the arc-shaped channels between the upper end and the lower end, and the arc-shaped channels are arc-shaped airways.

[0011] Preferably, the air outlet nozzle includes a positioning seat, a connecting tube, a limiting plate, a spherical connecting piece and an air outlet tube, the positioning seat is sealingly plugged into the air outlet hole; the connecting tube and the positioning seat are sealingly connected; the limiting plate is fixedly connected to one end of the positioning seat located on the inner side of the air outlet hole; the spherical connecting piece is rotatably connected to one end of the connecting tube away from the positioning seat, and the spherical connecting piece is connected to the connecting tube; the air outlet tube is fixedly connected to the spherical connecting piece, and the air outlet tube extends out of the connecting tube.

[0012] Preferably, at least two support rods are symmetrically fixed on the end face of the adjustment ring, and the two support rods slide and extend out of the oven and the baking mechanism in sequence, and one end of the support rod located outside the baking mechanism is axially fixedly connected with a telescopic part, the telescopic end of the telescopic part is fixedly connected to the support rod, and the telescopic part is fixedly connected to the baking mechanism.

[0013] Preferably, a plurality of angle changing parts are arranged between the adjustment ring and the air outlet nozzle, the plurality of angle changing parts are evenly arranged circumferentially, and there is a one-to-one correspondence between the plurality of angle changing parts and the plurality of air outlet nozzles; the angle changing part comprises a clamp and a connecting rod, the clamp is fixedly sleeved on the air outlet section of the air outlet nozzle, and the connecting rod is respectively hinged to the adjustment ring and the clamp.

[0014] The beneficial effects of the present invention are:

[0015] 1. The structure of the flow equalizing component is used to form rotation during the process of introducing air flow, so that the hot air flow is formed evenly in the air inlet cabin, and is transported to the inside of the furnace from the multiple air outlet nozzles arranged in the circumferential direction, so as to balance the temperature in the entire furnace and reduce the temperature difference. While improving the utilization rate of heat energy in the air flow, the temperature of the transverse section in the entire furnace is balanced. The position of the air outlet nozzle in the oven is used to make the hot air flow and the enameled wire running in the furnace form a reverse direction, improve the heat conduction efficiency, obtain good baking temperature uniformity, speed up the drying speed, maintain the consistency of the baking process of the enameled wire, ensure the quality of the enameled wire, and improve production efficiency;

[0016] 2. The axial displacement of the adjusting ring can be used to change the outlet angle of the outlet nozzle, so that the direction of the airflow blowing into the furnace can be adjusted. While ensuring the improvement of heat conduction efficiency, it is suitable for enameled wires under different wind speeds or different processes to avoid quality defects on the surface of the enameled wire caused by the airflow direction or airflow speed.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a partial structural schematic diagram of a reverse hot air circulation system of an enameled wire drying furnace according to an embodiment of the present application;

[0020] Figure 2 The internal structure of the reverse hot air circulation system of the enameled wire drying furnace according to the embodiment of the present application is shown in FIG. Figure 1 ;

[0021] Figure 3 The internal structure of the reverse hot air circulation system of the enameled wire drying furnace according to the embodiment of the present application is shown in FIG. Figure 2;

[0022] Figure 4 is a schematic diagram of the internal structure of a baking oven according to an embodiment of the present application;

[0023] Figure 5 is a structural exploded diagram of one end of the air intake cabin according to an embodiment of the present application;

[0024] Figure 6 According to the embodiment of the present application Figure 5 A is an enlarged schematic diagram;

[0025] Figure 7 is a structural exploded diagram of an air outlet cabin according to an embodiment of the present application;

[0026] Figure 8 is a schematic diagram of a partial structure of one end of an air intake cabin according to an embodiment of the present application;

[0027] Fig. 9 is a schematic diagram of a partial structure of an air outlet cabin according to an embodiment of the present application;

[0028] Fig.10 is a schematic structural diagram of an air outlet nozzle according to an embodiment of the present application;

[0029] Fig.11 is a schematic diagram of a partial structure of an air outlet nozzle according to an embodiment of the present application;

[0030] Fig.12 is a side view of a spoiler in an inner chamber according to an embodiment of the present application;

[0031] Fig.13 is a schematic diagram of the structure of a spoiler according to an embodiment of the present application.

[0032] Icons: 1. Baking mechanism; 11. Inlet and outlet end; 111. Support plate; 2. Baking oven; 21. Inner chamber; 22. Air inlet chamber; 221. Air inlet shell; 222. Blocking ring; 223. Air outlet hole; 23. Air outlet chamber; 231. Air outlet shell; 232. Block; 233. Variable diameter air duct; 3. Air circulation assembly; 31. Air supply component; 32. Air outlet component; 4. Flow equalization assembly; 41. Upper end; 42. Lower end ; 43. Arc-shaped partition; 44. Arc-shaped airway; 5. Counterflow component; 51. Air outlet nozzle; 511. Positioning seat; 512. Connecting tube; 513. Limiting plate; 514. Spherical connector; 515. Air outlet tube; 516. Variable diameter air outlet; 517. Flow stabilizing strip; 52. Adjusting ring; 521. Support rod; 522. Telescopic part; 53. Angle changing part; 531. Clamp; 532. Connecting rod; 6. Spoiler. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0034] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Embodiment 1, as Figure 1-Figure 13 As shown, a reverse hot air circulation system of an enameled wire drying furnace according to an embodiment of the present application includes a baking mechanism 1 and an exhaust gas catalytic combustion device. The baking mechanism 1 has a built-in drying furnace 2, and a heating element is provided in the drying furnace 2. The drying furnace 2 is connected to an airflow circulation component 3, and the airflow circulation component 3 is connected to the exhaust gas catalytic combustion device and transports the hot air generated after combustion to the inside of the drying furnace 2.

[0036] It should be noted that in the specific embodiment of the present application, the exhaust gas catalytic combustion device uses a catalyst to make the exhaust gas and oxygen undergo a full oxidation reaction to produce carbon dioxide and water, while releasing a large amount of heat energy, and the airflow circulation component 3 generates an airflow to transport the heat energy to the interior of the drying furnace 2, wherein the heating element can be an electric heating tube as a heat source. The above are all very mature existing technologies, so they will not be described in detail here.

[0037] Specifically, in a reverse hot air circulation system of an enameled wire drying furnace in an embodiment of the present application, the drying furnace 2 adopts a double-layer setting, and the heating element is located between the two layers.

[0038] Among them, the discharge end of the drying furnace 2 is coaxially connected to the air inlet cabin 22, and the feed end of the drying furnace 2 is coaxially connected to the air outlet cabin 23. The air inlet cabin 22 and the air outlet cabin 23 are respectively connected to the air flow circulation component 3. It can be seen that the overall direction of the airflow in the drying furnace 2 is opposite to the running direction of the enameled wire, which is used to improve the heat conduction efficiency and increase the drying speed.

[0039] A flow balancing component 4 is coaxially arranged inside the air intake cabin 22, and the flow balancing component 4 has multiple arc-shaped channels built in. The arc-shaped channels change the direction of the airflow. It can be understood that the flow balancing component 4 can rotate by itself under the action of the airflow, which not only has a deflecting effect on the airflow, but also causes the airflow in the air intake cabin 22 to be mixed.

[0040] like Figure 4 As shown, the inner diameter of the air inlet chamber 22 is smaller than the minimum inner diameter of the oven 2 , and the inner and outer diameters of the air outlet chamber 23 are the same as those of the air inlet chamber 22 .

[0041] A countercurrent component 5 is provided on the side of the air inlet chamber 22 facing the furnace, and the countercurrent component 5 includes air outlet nozzles 51 evenly arranged in the circumferential direction. The air outlet nozzles 51 are connected to the side of the air inlet chamber 22 facing the furnace, and the angle of the air outlet section of the air outlet nozzles 51 is adjustable. An adjusting ring 52 is coaxially provided on the inner side of the air inlet chamber 22, and the adjusting ring 52 and the multiple air outlet nozzles 51 are hinged. The adjusting ring 52 can be axially displaced on the inner side of the air inlet chamber 22. It can be seen that through the axial displacement of the adjusting ring 52, the angle of the multiple air outlet nozzles 51 in the axial direction can be driven to change, that is, the angle of the hot air flow blowing to the enameled wire can be changed.

[0042] In addition, the reverse hot air circulation system of the enameled wire drying furnace according to the embodiment of the present application also has the following additional technical features:

[0043] like Figure 1-Figure 3 As shown, the two ends of the baking mechanism 1 along the axial direction of the drying furnace 2 are the inlet and outlet ends 11, and the inlet and outlet ends 11 are provided with rectangular channels for the cables to pass through, and the lower side of the rectangular channel is fixedly connected with a support plate 111. Specifically, the enameled wire can be conveyed through the furnace smoothly by a special enameled wire conveying device (not shown in the figure). The conveying device is in various forms, such as guide wheels, guide rails, etc., which can ensure that the enameled wire maintains the correct position and direction during the drying process to avoid mutual entanglement and collision between the enameled wires.

[0044] like Figure 3 and Figure 4 As shown, the inner layer of the oven 2 is an inner chamber 21, and a cavity for placing a heating element is reserved between the inner chamber 21 and the oven 2. It should be noted that the material of the inner chamber 21 is a metal material with good thermal conductivity, and the material of the oven 2 is a heat-insulating material to improve the utilization rate of thermal energy and reduce the dissipation of thermal energy.

[0045] like Figure 3-Figure 5 , Figure 7 and Figure 8 As shown, the air intake chamber 22 includes an air intake shell 221 and a blocking ring 222. The blocking ring 222 and the interior of the air intake shell 221 constitute an annular cavity. A plurality of air outlet holes 223 are evenly arranged circumferentially on the side of the blocking ring 222 facing the furnace. The plurality of air outlet holes 223 and the plurality of air outlet nozzles 51 correspond to each other one by one and are sealed and connected. It can be seen that the flow equalizing component 4 will rotate in the annular cavity under the action of the airflow, so that the airflow in the air intake chamber 22 is mixed, and the hot air discharged from the plurality of air outlet holes 223 will be as uniform as possible.

[0046] like Figure 3 , Figure 4 , Figure 7 and Fig. 9As shown, the air outlet chamber 23 includes an air outlet shell 231 and a plurality of blocks 232. An annular cavity is provided in the air outlet shell 231, and a plurality of blocks 232 are axially and evenly arranged in the annular cavity; the blocks 232 are arranged in a rectangular shape, and the blocks 232 do not abut against the inner wall of the air outlet shell 231 on the radial outer side; a variable diameter air channel 233 is formed between two adjacent blocks 232.

[0047] It should be noted that the variable diameter air channel 233 is designed to be gradually expanded radially outward, as shown in Figure 7 and Fig. 9 As shown, this design is used to enhance the suction force at the air inlet end inside the air outlet chamber 23 .

[0048] like Figure 3 and Figure 4 As shown, the air flow circulation component 3 includes at least one air supply member 31 and at least one air outlet member 32. The air supply member 31 is connected to the air inlet cabin 22 and is arranged along the tangential direction of the air inlet cabin 22. The air outlet member 32 is connected to the air outlet cabin 23 and is arranged along the tangential direction of the air outlet cabin 23. It can be understood that by being arranged along the tangential direction, the rotation of the airflow in the air inlet cabin 22 and the air outlet cabin 23 can be further enhanced, thereby promoting the uniformity of the airflow in the two cabins.

[0049] It should be noted that the air supply member 31 and the air outlet member 32 may be fans in the prior art and may be driven by variable frequency motors to meet the requirements of forming different air flow speeds.

[0050] From the above description, it can be known that the air outlet piece 32 generates suction to the annular cavity in the air outlet shell 231, and the direction of the suction is tangential to the annular cavity in the air outlet shell 231, and the suction is sucked into the air flow in the furnace from multiple variable-diameter air ducts 233. The design of the variable-diameter air duct 233 enhances the suction at the air flow inlet, so as to better inhale the air flow in the furnace and prevent the air flow in the furnace from escaping from the feed end of the baking mechanism 1. It can be further understood that after the air flow enters the variable-diameter air duct 233, it will rush toward the air outlet piece 32 in the annular cavity in the air outlet shell 231. The tangential connection between the air outlet piece 32 and the air outlet shell 231 causes the air flow to rotate in the annular cavity, and cooperates with the design of the variable-diameter air duct 233 to make the suction at the air inlet on the inner side of the entire air outlet compartment 23 as balanced as possible, thereby improving the adsorption effect on the air flow.

[0051] like Figure 8As shown, the flow balancing component 4 includes an upper end portion 41, a lower end portion 42 and a plurality of arc-shaped baffles 43. The upper end portion 41 is rotatably disposed in the annular cavity between the air inlet housing 221 and the blocking ring 222. The upper end portion 41 is disposed in the annular cavity toward the air outlet 223 side, and the upper end portion 41 is disposed in an arc shape away from the air outlet 223, and the arc shape is outwardly convex; the lower end portion 42 is rotatably disposed in the annular cavity between the air inlet housing 221 and the blocking ring 222. The lower end portion 42 is disposed in the annular cavity away from the air outlet 223 side, and the lower end portion 42 is disposed in an arc shape similar to the upper end portion 41 toward the upper end portion 41, and the arc shape is inwardly concave; A plurality of arc-shaped baffles 43 are evenly fixed circumferentially between the upper end 41 and the lower end 42; the plurality of arc-shaped baffles 43 isolate a plurality of arc-shaped channels between the upper end 41 and the lower end 42, and the arc-shaped channel is an arc-shaped air channel 44. It should be noted that the air inlet end of the arc-shaped air channel 44 is located on the side wall of the flow equalizing component 4, and the air outlet end of the arc-shaped air channel 44 is located at the end of the flow equalizing component 4 facing the air outlet hole 223. In this way, the airflow tangentially entering the air inlet cabin 22 will be changed from radial flow to axial flow, and a rotational force will be applied to the side wall of the arc-shaped air channel 44 when passing through the arc-shaped air channel 44, so that the flow equalizing component 4 has rotational potential energy.

[0052] like Figure 8 , Fig.10 and Fig.11 As shown, the air outlet nozzle 51 includes a positioning seat 511, a connecting tube 512, a limiting plate 513, a spherical connecting piece 514 and an air outlet tube 515. The positioning seat 511 is sealed and plugged into the air outlet hole 223; the connecting tube 512 and the positioning seat 511 are sealed and connected, and specifically can be threadedly connected to facilitate installation or disassembly; the limiting plate 513 is fixedly connected to one end of the positioning seat 511 located on the inner side of the air outlet hole 223, and is used to limit the axial position of the positioning seat 511; the spherical connecting piece 514 is rotatably connected to one end of the connecting tube 512 away from the positioning seat 511, and the spherical connecting piece 514 is connected to the connecting tube 512; the air outlet tube 515 is fixedly connected to the spherical connecting piece 514, and the air outlet tube 515 extends out of the connecting tube 512.

[0053] It should be noted that the spherical connector 514 and the connecting tube 512 are sealed and rotatably connected, and this end of the connecting tube 512 forms a limit for the spherical connector 514 to prevent the spherical connector 514 from detaching from this end of the connecting tube 512. It should be further noted that, except for the part connected to the spherical connector 514, the inner diameter of the remaining parts of the connecting tube 512 is not less than the outer diameter of the spherical connector 514, that is, the spherical connector 514 can be detached from one end of the connecting tube 512 connected to the positioning seat 511, which is convenient for the installation and disassembly of the spherical connector 514.

[0054] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, at least two support rods 521 are symmetrically fixed on the end surface of the adjusting ring 52, and the two support rods 521 slide and extend out of the baking oven 2 and the baking mechanism 1 in sequence. Specifically, the support rod 521 slides through the end side wall of the air inlet cabin 22 to ensure that the support rod 521 is more stable during the sliding process to avoid axial swinging, and one end of the support rod 521 located on the outside of the baking mechanism 1 is axially fixedly connected with a telescopic part 522, the telescopic end of the telescopic part 522 is fixedly connected to the support rod 521, and the telescopic part 522 is fixedly connected to the baking mechanism 1. It can be understood that the displacement change of the telescopic end of the telescopic part 522 can drive the support rod 521 to undergo axial displacement, and then drive the adjusting ring 52 to undergo axial displacement.

[0055] It should be noted that the telescopic member 522 can be a hydraulic cylinder, an electric push rod, etc. in the prior art.

[0056] like Figure 6 As shown, a plurality of angle changing members 53 are provided between the adjusting ring 52 and the air outlet nozzle 51. The plurality of angle changing members 53 are evenly arranged circumferentially, and there is a one-to-one correspondence between the plurality of angle changing members 53 and the plurality of air outlet nozzles 51. The angle changing member 53 includes a clamp 531 and a connecting rod 532. The clamp 531 is fixedly sleeved on the air outlet section of the air outlet nozzle 51, and the connecting rod 532 is hinged to the adjusting ring 52 and the clamp 531, respectively.

[0057] It should be noted that the connecting rods 532 are radially arranged relative to the adjustment ring 52 .

[0058] It can be understood that, through the connecting rod 532 hinged at both ends, the displaced adjustment ring 52 can drive the outlet section of the outlet nozzle 51, i.e., the outlet tube 515, to change the axial angle on the connecting tube 512 to form airflows at different angles for the enameled wire.

[0059] The following describes the use process of a reverse hot air circulation system of an enameled wire drying furnace according to an embodiment of the present application with reference to the accompanying drawings:

[0060] When in use, the air supply member 31 is used to convey the external hot air flow to the air inlet cabin 22, and the kinetic energy of the air flow is used to make the flow equalizing component 4 rotate in the air inlet cabin 22. The hot air flow is mixed in the air inlet cabin 22 and becomes uniform, and then blows from a plurality of uniformly arranged air outlet nozzles 51 on the inner end of the air inlet cabin 22 to the inner chamber 21. There are enameled wires in the inner chamber 21 that enter from the direction of the air outlet cabin 23 and are output from the direction of the air inlet cabin 22. When the air flow blows onto the enameled wires in the inner chamber 21, the telescopic member 522 can drive the support rod 521 to drive the adjusting ring 52 to axially displace, and the connecting rod 532 hinged at both ends can be used to pull the air outlet tube 515 of the air outlet nozzle 51 to change the axial angle, so that the angle of the air flow blowing onto the enameled wire can be changed, thereby greatly improving the heat conduction efficiency and obtaining While obtaining good uniformity of baking temperature, the drying speed of the enameled wire is accelerated, the consistency of the baking process of the enameled wire is maintained, the quality of the enameled wire is ensured, and the production efficiency is improved. The air outlet member 32 adsorbs the airflow in the inner chamber 21 through the air outlet chamber 23, and utilizes the structure in the air outlet chamber 23 to make the suction force at the air inlet end inside the air outlet member 32 uniform and strengthened, thereby improving the suction effect of the airflow. This design first makes the airflow enter the inner chamber 21 to form a uniform shape, which can reduce the temperature difference of the transverse section of the baking furnace 2, and at the same time, the enameled wire is blown in the reverse direction, and the airflow angle is adjustable. While ensuring the improvement of heat conduction efficiency, it is suitable for enameled wires under different wind speeds or different processes to avoid quality defects on the surface of the enameled wire caused by the airflow direction or airflow speed.

[0061] In the related art, in the reverse hot air circulation system of the enameled wire drying furnace, when the hot air flow is blown from the air outlet nozzle 51 into the inner chamber 21, the multiple air flows blown out from the multiple air outlet nozzles 51 form a path that gradually converges, so the multiple air flows will form turbulence in the inner chamber 21 after converging. Although the general trend is to flow toward the air outlet chamber 23, the turbulence in the inner chamber 21 will affect the temperature difference in the transverse section and the axial section inside the inner chamber 21, which will have a certain adverse effect on the drying effect of the enameled wire.

[0062] Embodiment 2, according to some embodiments of the present application, such as Figure 3 , Fig.12 and Fig.13 As shown, a plurality of spoilers 6 are evenly arranged on the inner circumference of the inner layer of the drying furnace 2, and one end of the spoiler 6 is spaced apart from the adjusting ring 52 so that the multiple airflows blown out from the air outlet nozzle 51 can be better guided by the spoiler 6, and the other end of the spoiler 6 abuts against the air outlet chamber 23, specifically, abuts against one end of the air outlet chamber 23 facing the inner chamber 21.

[0063] Specifically, the spoiler 6 is arranged in a spiral sheet along the axial direction of the oven 2, and the spoiler 6 is fixed to the inner layer of the oven 2 along the axial direction of the oven 2. In this way, a plurality of spoilers 6 will form a plurality of spiral channels on the inner wall of the inner chamber 21 to guide the airflow in the inner chamber 21 to alleviate the turbulence phenomenon generated after the airflows converge.

[0064] The pitch of the spoiler 6 is gradually reduced from the air inlet compartment 22 to the air outlet compartment 23 .

[0065] Specifically, the inner diameter of the spiral sheet of the spoiler 6 is gradually reduced from the air inlet compartment 22 to the air outlet compartment 23 .

[0066] Therefore, during specific use, the pitch and inner diameter of the spoiler 6 are set to slow down the axial flow speed of the airflow in the inner bore 21 from one end of the air inlet compartment 22 to the other end of the air outlet compartment 23. The heat energy contained in the airflow decreases as it flows, and the axial flow speed of the airflow in the inner bore 21 is also decreasing at this time. Therefore, the heat energy in the airflow is better utilized to prevent the heat energy from directly escaping from the inner bore 21 with the airflow. At the same time, due to the change in the inner diameter of the spoiler 6, the turbulence in the airflow gradually forms a regular guide, reducing the turbulent state. The reduction in turbulence will further ensure the axial flow of the airflow in the inner bore 21 and the guided flow of the spiral airway, making the flow of the airflow in the inner bore 21 more regular, thereby improving the drying effect of the enameled wire.

[0067] In the related art, in the reverse hot air circulation system of the enameled wire drying furnace, when the air flow is blown out from the air outlet 515, under the straight cylindrical structure of the air outlet 515, the air flow direction forms strands, especially when the air flow rate is faster, the strand-shaped air flow will be more obvious, and the strand-shaped air flow will first cause a strong impact on the enameled wire, and secondly, it will cause the air flow rate on the side of the inner chamber 21 close to the air inlet cabin 22 to be too fast, resulting in a high probability of temperature difference on the side of the inner chamber 21 close to the air inlet cabin 22, which is unfavorable to the drying of the enameled wire.

[0068] Embodiment 3, according to some embodiments of the present application, such as Fig.10 and Fig.11 As shown, the outlet section of the outlet nozzle 51 is coaxially fixed with an expansion structure, the diameter of the expansion structure is gradually expanding, and a plurality of guide structures are evenly arranged on the inner circumference of the expansion structure, and the guide structures are arranged along the axial direction of the expansion structure.

[0069] Specifically, the diameter-enlarging structure coaxially connected to the air outlet nozzle 51 is a variable-diameter air outlet 516 , and the diameter of the variable-diameter air outlet 516 gradually increases from the air inlet end to the air outlet end.

[0070] The guiding structure in the variable-diameter air outlet 516 is a flow stabilizing strip 517 . The flow stabilizing strip 517 is fixed to the inner wall of the variable-diameter air outlet 516 . A plurality of flow stabilizing strips 517 are radially distributed in the variable-diameter air outlet 516 .

[0071] Therefore, during actual use, when the airflow flows from the air outlet tube 515 to the variable diameter air outlet 516, the flow velocity of the airflow will be reduced to a certain extent due to the gradual increase in the fluid cross-section, reducing the impact of the airflow on the enameled wire. At the same time, the radially distributed multiple flow stabilizing strips 517 will maintain the stability and continuity of the airflow in the variable diameter air outlet 516, improve the efficiency of airflow delivery, and enable the airflow to be more evenly distributed when flowing out of the variable diameter air outlet 516, which helps to reduce the vortex and turbulence formed when the airflow is blown out of the air outlet nozzle 51. This design improves the stability and controllability of the airflow.

[0072] It should be noted that the specific models and specifications of the air supply member 31, the air outlet member 32 and the telescopic member 522 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0073] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A reverse hot air circulation system for an enameled wire drying furnace, comprising a baking mechanism (1) and an exhaust gas catalytic combustion device, wherein the baking mechanism (1) has a built-in drying furnace (2), wherein a heating element is arranged in the drying furnace (2), and an airflow circulation component (3) is connected to the drying furnace (2), wherein the airflow circulation component (3) is connected to the exhaust gas catalytic combustion device and transports the hot air generated after combustion to the interior of the drying furnace (2), wherein the hot air generated after combustion is transported to the interior of the drying furnace (2), and wherein the hot air generated after combustion is transported to the interior of the drying furnace (2), and wherein the hot air circulation component (3) is connected to the exhaust gas catalytic combustion device and transports the hot air generated after combustion ... Also includes: The oven (2) is arranged in two layers, and the heating element is located between the two layers; The discharge end of the drying furnace (2) is coaxially connected to an air inlet cabin (22), and the feed end of the drying furnace (2) is coaxially connected to an air outlet cabin (23), and the air inlet cabin (22) and the air outlet cabin (23) are respectively connected to the airflow circulation component (3); A flow balancing component (4) is coaxially arranged inside the air inlet chamber (22), wherein the flow balancing component (4) has a plurality of arc-shaped channels built therein, and the arc-shaped channels change the direction of the airflow; The inner diameter of the air inlet chamber (22) is smaller than the inner diameter of the baking oven (2); The inner and outer diameters of the air outlet chamber (23) are the same as the inner and outer diameters of the air inlet chamber (22); A counterflow component (5) is arranged on the side of the air inlet chamber (22) facing the furnace, and the counterflow component (5) comprises air outlet nozzles (51) uniformly arranged in the circumferential direction, the air outlet nozzles (51) are connected to the side of the air inlet chamber (22) facing the furnace, the air outlet section angle of the air outlet nozzles (51) is adjustable, and an adjustment ring (52) is coaxially arranged on the inner side of the air inlet chamber (22), the adjustment ring (52) and the plurality of air outlet nozzles (51) are hinged, and the adjustment ring (52) is axially displaceable on the inner side of the air inlet chamber (22).

2. A reverse hot air circulation system for an enameled wire drying furnace as claimed in claim 1, characterized in that: The two ends of the baking mechanism (1) along the axial direction of the baking oven (2) are feeding and discharging ends (11), and the feeding and discharging ends (11) are provided with rectangular channels for cables to pass through, and a support plate (111) is fixedly connected to the lower side of the rectangular channel.

3. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: The inner layer of the oven (2) is an inner chamber (21), and a cavity for placing the heating element is left between the inner chamber (21) and the oven (2).

4. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: The air intake chamber (22) comprises an air intake shell (221) and a blocking ring (222); the blocking ring (222) and the interior of the air intake shell (221) form an annular cavity; a plurality of air outlet holes (223) are evenly arranged in the circumferential direction on one side of the blocking ring (222) facing the furnace; the plurality of air outlet holes (223) and the plurality of air outlet nozzles (51) correspond to each other one by one and are sealed and connected.

5. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: The air outlet chamber (23) comprises an air outlet shell (231) and a plurality of stoppers (232); an annular cavity is arranged in the air outlet shell (231); and the plurality of stoppers (232) are axially and evenly arranged in the annular cavity; The stopper (232) is arranged in a rectangular shape, and the outer side of the stopper (232) in the radial direction does not abut against the inner wall of the air outlet housing (231); A variable diameter air passage (233) is formed between two adjacent stoppers (232).

6. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: The airflow circulation component (3) comprises at least one air supply member (31) and at least one air outlet member (32); the air supply member (31) is connected to the air inlet compartment (22) and is arranged along the tangent direction of the air inlet compartment (22); and the air outlet member (32) is connected to the air outlet compartment (23) and is arranged along the tangent direction of the air outlet compartment (23).

7. A reverse hot air circulation system for an enameled wire drying furnace as claimed in claim 4, characterized in that: The current balancing component (4) comprises: an upper end portion (41), the upper end portion (41) being rotatably disposed in an annular cavity between the air inlet housing (221) and the blocking ring (222), the upper end portion (41) being disposed in an annular cavity toward a side of the air outlet (223), and the side of the upper end portion (41) away from the air outlet (223) being arranged in an arc shape, the arc shape being convex outwards; a lower end portion (42), the lower end portion (42) being rotatably disposed in an annular cavity between the air inlet housing (221) and the blocking ring (222), the lower end portion (42) being located in the annular cavity on a side away from the air outlet hole (223), and the side of the lower end portion (42) facing the upper end portion (41) being arranged in an arc shape similar to that of the upper end portion (41), the arc shape being inwardly concave; A plurality of arc-shaped baffles (43), wherein the plurality of arc-shaped baffles (43) are evenly fixedly connected between the upper end portion (41) and the lower end portion (42) in the circumferential direction; The plurality of arc-shaped partitions (43) separate a plurality of arc-shaped passages between the upper end portion (41) and the lower end portion (42), and the arc-shaped passages are arc-shaped air passages (44).

8. A reverse hot air circulation system for an enameled wire drying furnace as claimed in claim 7, characterized in that: The air outlet nozzle (51) comprises: A positioning seat (511), the positioning seat (511) is sealed and plugged into the air outlet (223); A connecting tube (512), wherein the connecting tube (512) and the positioning seat (511) are in sealing communication; A limiting plate (513), the limiting plate (513) being fixedly connected to one end of the positioning seat (511) located on the inner side of the air outlet hole (223); a spherical connecting member (514), the spherical connecting member (514) being rotatably connected to an end of the connecting tube (512) away from the positioning seat (511), and the spherical connecting member (514) and the connecting tube (512) being in communication; A gas outlet tube (515), wherein the gas outlet tube (515) is fixedly connected to the spherical connecting member (514), and the gas outlet tube (515) extends out of the connecting tube (512).

9. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: At least two support rods (521) are symmetrically fixedly connected to the end surface of the adjustment ring (52); the two support rods (521) are slidably extended out of the baking oven (2) and the baking mechanism (1) in sequence; one end of the support rod (521) located outside the baking mechanism (1) is axially fixedly connected to a telescopic member (522); the telescopic end of the telescopic member (522) is fixedly connected to the support rod (521); and the telescopic member (522) is fixedly connected to the baking mechanism (1).

10. The reverse hot air circulation system of an enameled wire drying furnace according to claim 1, characterized in that: A plurality of angle changing parts (53) are arranged between the adjusting ring (52) and the air outlet nozzle (51), the plurality of angle changing parts (53) are evenly arranged in the circumferential direction, and the plurality of angle changing parts (53) and the plurality of air outlet nozzles (51) correspond one to one; The angle changing member (53) comprises a clamp (531) and a connecting rod (532); the clamp (531) is fixedly sleeved on the air outlet section of the air outlet nozzle (51); and the connecting rod (532) is hinged to the adjustment ring (52) and the clamp (531), respectively.

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