Preheating device for steel processing

Abstract

The invention relates to the technical field of preheating devices for scrap steel processing, in particular to a preheating device for steel processing, which comprises an electric furnace, and a supporting platform is mounted on one side of a circuit; a preheating channel and a conveyor are installed on the supporting platform, the conveyor can convey materials into the electric furnace, and the preheating channel covers the conveyor; an air exhaust part is arranged on one side of the supporting platform, the air exhaust part is located on one side of the preheating channel, and one end of the conveyor penetrates through the air exhaust part and extends to one side; a heat conduction piece is arranged on the preheating channel and used for improving the preheating efficiency of materials. In the using process of the device, heat in waste gas can be absorbed through the heat conduction piece, then the heat is transferred to the end close to a material, and the heat can be further located in the middle of the material, so that the material preheating efficiency of the preheating channel is improved, meanwhile, the heat recovery efficiency of the device is also improved, and the energy consumption is reduced. And the energy consumption of melting the material by the device is further reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of scrap steel processing preheating devices, and more specifically, to a preheating device for steel material processing. Background Art

[0002] In the process of steel processing, the recycling of scrap steel is a particularly important link in steel processing. The recycling of scrap steel can fully recycle scrap steel and further avoid the waste of scrap steel and the waste of resources.

[0003] However, in the process of scrap steel recycling, it is generally heated and melted in an electric furnace. In this process, since the electric furnace is sealed, the exhaust gas passes through the material conveying channel, which not only preheats the material but also improves resource utilization. The existing preheating channel only conveys the generated exhaust gas, resulting in a low heat recovery rate in the preheating channel, further affecting the preheating effect of the device.

[0004] Therefore, we proposed a preheating device for steel processing to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a preheating device for steel processing to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A preheating device for steel processing, comprising an electric furnace, a supporting platform installed on one side of the circuit;

[0007] A preheating channel and a conveyor are installed on the supporting platform. The conveyor can transport the materials to the electric furnace, and the preheating channel covers the conveyor.

[0008] A suction piece is provided on one side of the supporting platform, the suction piece is located on one side of the preheating channel, and one end of the conveyor passes through the suction piece and extends to one side;

[0009] The preheating channel is provided with a heat conducting member, which is used to improve the preheating efficiency of the material.

[0010] In a preferred embodiment, the heat conductive member includes a groove arranged on the preheating channel, a rotating rod connected to the motor is provided in the groove, a rotating cylinder is sleeved on the rotating rod, a conducting cylinder is welded on the side wall of the rotating cylinder, and two symmetrical conducting plates are installed on the side wall of the conducting cylinder, and the conducting plates are located near the top of the preheating channel.

[0011] In a preferred embodiment, the conduction cylinder includes a heat-conducting copper cylinder installed on a rotating cylinder, a plurality of heat-conducting silver columns are fixedly connected to the inner side wall of the heat-conducting copper cylinder, one end of the plurality of heat-conducting silver columns is fixedly connected to the same solid copper column, a plurality of dispersion nets are arranged between the plurality of heat-conducting silver columns, a plurality of air inlet holes are arranged on the side wall of the heat-conducting copper cylinder, the plurality of air inlet holes are located in a windward position in the direction of exhaust gas transportation, a plurality of graphene protrusions are fixedly connected to the inner side wall of the heat-conducting copper cylinder, and the graphene protrusions extend to one side of the dispersion net.

[0012] In a preferred embodiment, the conduction plate includes a heat-conducting copper plate installed on the side wall of the heat-conducting copper cylinder, a plurality of ventilation heat-conducting holes are provided on the side wall of the heat-conducting copper plate, a plurality of heat-conducting grooves are provided on the side wall of the heat-conducting copper plate, heat-conducting silver sheets are fixedly connected to the side walls of the plurality of heat-conducting grooves, a plurality of ventilation heat-conducting holes are provided with graphene heat-absorbing sheets, and the plurality of graphene heat-absorbing sheets are respectively connected through a plurality of graphene heat-conducting sheets and a plurality of heat-conducting silver sheets.

[0013] In a preferred embodiment, the connecting member includes a connecting head installed at the lower end of the conductive tube, the connecting head is integrally installed with a rubber cover, a fixing ring is fixedly connected to the inner side wall of the connecting head, a connecting ring is fixedly connected to the inner bottom of the rubber cover, a plurality of springs are arranged between the connecting ring and the fixing ring, the plurality of springs are respectively connected to the connecting ring and the fixing ring, and a magnetic ring is fixedly connected to the lower end surface of the rubber cover.

[0014] In a preferred embodiment, a micro air pump is provided above the connector, the output end of the micro air pump is connected to the input end of the connector, the micro air pump is in a conductive tube, a sealing ring is provided at the connection between the conductive tube and the micro air pump, an inner top end of the connector is fixedly connected to an air guide cover, the output end of the air guide cover is fixedly connected to an air supply pipe, a plurality of baffles at the output end of the micro air pump are fixedly connected to the inner side wall of the air guide cover, and the heights of the plurality of baffles gradually increase in the order of gradually approaching the air supply pipe.

[0015] In a preferred embodiment, the air intake component includes an air intake head located below the connecting head, an electromagnetic ring matching the magnetic ring is sleeved on the side wall of the air intake head, a sealing head is fixedly connected to the input end of the air intake head, a sealing ring is fixedly connected to the inner side wall of the sealing head, one end of the air supply pipe passes through the side wall of the sealing ring and extends to the bottom, and a lubricating part is installed on the sealing ring.

[0016] In a preferred embodiment, the lubricating part includes an oil storage cylinder fixedly connected to the upper end of the sealing ring, a plurality of rubber rods are penetrated through the side wall of the oil storage cylinder, a magnetic head is fixedly connected to the end of the plurality of rubber rods, a magnetic block matching the magnetic head is provided on the side wall of the air supply pipe, a connecting plate is fixedly connected at one end of the plurality of rubber rods, and a spring telescopic rod connected to the inner wall of the oil storage cylinder is fixedly connected to the side walls of the plurality of connecting plates.

[0017] In a preferred embodiment, the carrier includes a conveying channel arranged on the conveyor, and the conveying channel is provided with a plurality of vertical channels connected thereto, and the plurality of vertical channels are respectively located below the air inlet head, and the plurality of vertical channels are respectively connected to the plurality of air inlet heads, and a plurality of heat conducting plates are provided through the conveying channel, and auxiliary rods are fixedly connected to the side walls of the plurality of heat conducting plates, and the auxiliary rods are located in the conveyor.

[0018] Technical effects and advantages of the present invention:

[0019] During use, the device can absorb heat from the exhaust gas through the heat conductor, and then transfer the heat to one end close to the material, further enabling the heat to be in the middle of the material, thereby improving the preheating efficiency of the preheating channel for the material, while also improving the heat recovery efficiency of the device, further reducing the energy consumption of the device for melting the material, and indirectly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a side view schematic diagram of the connection structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the partial connection structure of the preheating channel and the conveyor in the present invention;

[0023] Figure 4 It is a schematic diagram of the partial cross-sectional connection structure of the preheating channel and the conveyor in the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of a connection structure viewed from above;

[0025] Figure 6 It is a schematic diagram of a partial connection structure of a conductive tube in the present invention from a top view;

[0026] Figure 7 It is a schematic diagram of the local connection structure of the conductive plate in the present invention;

[0027] Figure 8 It is a schematic diagram of the partial connection structure of the conductive tube and the connecting piece in the present invention;

[0028] Fig. 9 It is a schematic diagram of the partial connection structure of the air intake member in the present invention;

[0029] Fig.10 It is a schematic diagram of the partial connection structure of the lubricating part in the present invention;

[0030] Fig.11 It is a schematic diagram of the partial cross-sectional connection structure of the bearing member in the present invention.

[0031] The reference numerals are: 1 electric furnace, 2 supporting platform, 3 exhaust member, 4 preheating channel, 5 conveyor;

[0032] 6 heat conducting member, 61 groove, 62 rotating rod, 63 rotating cylinder, 64 conducting cylinder, 65 conducting plate;

[0033] 641 heat-conducting copper cylinder, 642 heat-conducting silver column, 643 solid copper column, 644 dispersion net, 645 air inlet hole, 646 graphene convex thorn;

[0034] 651 thermal conductive copper plate, 652 ventilation thermal conductive hole, 653 thermal conductive groove, 654 thermal conductive silver sheet, 655 graphene heat absorbing sheet, 656 graphene thermal conductive sheet;

[0035] 7 connecting piece, 71 connecting head, 72 rubber cover, 73 fixing ring, 74 connecting ring, 75 spring, 76 magnetic ring;

[0036] 711 sealing ring, 712 micro air pump, 713 air guide cover, 714 air delivery pipe, 715 baffle;

[0037] 8 air intake part, 81 air intake head, 82 electromagnetic ring, 83 sealing head, 84 sealing ring, 85 lubricating part;

[0038] 851 oil storage cylinder, 852 rubber rod, 853 magnetic head, 854 connecting plate, 855 spring telescopic rod;

[0039] 9 bearing member, 91 conveying channel, 92 vertical channel, 93 heat conducting plate, 94 auxiliary rod; DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Reference Figure 1 and Figure 2 A preheating device for steel processing includes an electric furnace 1. It is particularly noteworthy that the electric furnace 1 is an electric arc furnace. The electric furnace can use the high temperature generated by the electrode arc to melt the scrap steel. The discharge end of the electric furnace 1 is provided with a discharge pipe. When the scrap steel is completely melted, it can be discharged to the outside through the discharge pipe. At the same time, a track is provided under the electric furnace 1, which can further enable a trolley carrying the scrap steel solution to pass.

[0042] Reference Figure 1 and Figure 2A supporting platform 2 is installed on one side of the electric furnace 1, a vacuum component 3 is installed at one end of the supporting platform 2, and a preheating channel 4 and a conveyor 5 are installed on the supporting platform 2. It is particularly noteworthy that one end of the conveyor 5 passes through the vacuum component 3 and extends into the electric furnace 1, and the preheating channel 4 covers the conveyor 5.

[0043] It is more important to note that the support platform 2 has the function of supporting the preheating channel 4 and the conveyor 5. At the same time, the conveyor 5 is a vibrating conveyor 5, and a large-scale exhaust device is provided in the exhaust member 3, and the connection between the exhaust member 3 and the conveyor 5 is a dynamic seal. The more detailed principle is as follows: a gantry crane that can move left and right is provided on one side of the conveyor 5. When the gantry crane is working, the waste in the scrap yard can be put into the conveyor 5, and the conveyor 5 can transport the waste to the electric furnace 1 for melting, and the hot exhaust gas generated by the melting can enter the exhaust member 3 through the preheating channel 4, and a dust removal system is provided on one side of the exhaust member 3, so that the hot exhaust gas can pass through the dust removal system, and further the exhaust gas can meet the standards before being discharged.

[0044] Reference Figure 3 , Figure 4 and Figure 5 , a heat-conducting member 6 is provided on the preheating channel 4, and the heat-conducting member 6 includes a groove 61 arranged on the preheating channel 4, and a rotating rod 62 connected to the motor is provided in the groove 61. It is more important to note that a high-temperature resistant motor is provided in the preheating channel 4, and the driving end of the motor is connected to the rotating rod 62. Therefore, when the motor is working, the rotating rod 62 can be rotated to further complete the rotation of other parts. A rotating cylinder 63 is sleeved on the rotating rod 62, and a conducting cylinder 64 is welded on the side wall of the rotating cylinder 63. Two symmetrical conducting plates 65 are installed on the side wall of the conducting cylinder 64. It is particularly noteworthy that the conducting plate 65 is located near the top of the preheating channel 4. In more detail, the conducting plate 65 is located in the flow channel for exhaust gas transportation.

[0045] Reference Figure 5 and Figure 6 The conducting cylinder 64 includes a heat-conducting copper cylinder 641 mounted on the rotating cylinder 63, a plurality of heat-conducting silver pillars 642 are fixedly connected to the inner side wall of the heat-conducting copper cylinder 641, one end of the plurality of heat-conducting silver pillars 642 is fixedly connected to the same solid copper pillar 643, a plurality of dispersion nets 644 are arranged between the plurality of heat-conducting silver pillars 642, a plurality of air inlet holes 645 are arranged on the side wall of the heat-conducting copper cylinder 641, it is particularly noted that the plurality of air inlet holes 645 are located in the windward position in the exhaust gas conveying direction, a plurality of graphene convex thorns 646 are fixedly connected to the inner side wall of the heat-conducting copper cylinder 641, and the graphene convex thorns 646 extend to one side of the dispersion net 644;

[0046] Reference Figure 5 and Figure 7The conducting plate 65 includes a heat-conducting copper plate 651 mounted on the side wall of the heat-conducting copper cylinder 641, a plurality of ventilation heat-conducting holes 652 are arranged on the side wall of the heat-conducting copper plate 651, a plurality of heat-conducting grooves 653 are arranged on the side wall of the heat-conducting copper plate 651, a heat-conducting silver sheet 654 is fixedly connected to the side walls of the plurality of heat-conducting grooves 653, a graphene heat-absorbing sheet 655 is arranged in each of the plurality of ventilation heat-conducting holes 652, and the plurality of graphene heat-absorbing sheets 655 are respectively connected to the plurality of heat-conducting silver sheets 654 through a plurality of graphene heat-conducting sheets 656;

[0047] In actual operation, when the electric furnace 1 melts the scrap steel, since the electric furnace 1 can generate a large amount of exhaust gas and the electric furnace 1 is of sealed design, the exhaust gas can enter the exhaust part 3 through the preheating channel 4, and thereby preheat the scrap steel, thereby achieving the purpose of saving resources. What is more important to note is that a part of the exhaust gas contacts the scrap steel, thereby preheating the scrap steel, while another part of the exhaust gas passes through the heat-conducting copper plate 651, so that the exhaust gas with heat can pass through the ventilation heat-conducting hole 652, so that the graphene heat-absorbing sheet 655 and the graphene heat-conducting sheet 656 can absorb the heat in the exhaust gas and transfer the heat to the heat-conducting silver sheet 654. Then, with the assistance of the heat-conducting copper plate 651, the heat can be transferred to the heat-conducting copper cylinder 641, and it is particularly important to note that Yes, during this process, part of the exhaust gas will enter the heat-conducting copper cylinder 641 through the air inlet 645, and when the exhaust gas with a certain temperature contacts the solid copper column 643 and the dispersion net 644, the heat-conducting silver column 642 can absorb heat more fully, and then transfer the heat to the heat-conducting copper cylinder 641. It is particularly noteworthy that the lower end of the heat-conducting copper cylinder 641 will contact the material, and the temperature emitted by the heat-conducting copper cylinder 641 at this time can make the material inside be better preheated, further improving the preheating efficiency. At the same time, it is particularly noteworthy that the graphene thorns 646 can absorb the heat in the dispersion net 644 and the exhaust gas, so that the heat of the heat-conducting copper cylinder 641 can be more concentrated, further ensuring the normal use of the device.

[0048] Reference Figure 4 and Figure 8 A connecting piece 7 is installed on the conductive cylinder 64, and the connecting piece 7 includes a connecting head 71 installed on the lower end of the conductive cylinder 64, and a rubber cover 72 is integrally installed on the connecting head 71. A fixing ring 73 is fixedly connected to the inner side wall of the connecting head 71, and a connecting ring 74 is fixedly connected to the inner bottom of the rubber cover 72. A plurality of springs 75 are provided between the connecting ring 74 and the fixing ring 73, and the plurality of springs 75 are respectively connected to the connecting ring 74 and the fixing ring 73. A magnetic ring 76 is fixedly connected to the lower end surface of the rubber cover 72.

[0049] Reference Figure 4 and Figure 8A micro air pump 712 is provided above the connector 71, the output end of the micro air pump 712 is connected to the input end of the connector 71, the micro air pump 712 is in the conduction tube 64, a sealing ring 711 is provided at the connection between the conduction tube 64 and the micro air pump 712, an air guide cover 713 is fixedly connected to the inner top end of the connector 71, an air supply pipe 714 is fixedly connected to the output end of the air guide cover 713, a plurality of baffles 715 at the output end of the micro air pump 712 are fixedly connected to the inner side wall of the air guide cover 713, and it is particularly noteworthy that the heights of the plurality of baffles 715 gradually increase in the order of gradually approaching the air supply pipe 714.

[0050] Reference Figure 4 , Figure 8 and Fig. 9 An air intake member 8 is installed on the conveyor 5, and the air intake member 8 includes an air intake head 81 located below the connecting head 71, and an electromagnetic ring 82 matching the magnetic ring 76 is sleeved on the side wall of the air intake head 81. A sealing head 83 is fixedly connected to the input end of the air intake head 81, and a sealing ring 84 is fixedly connected to the inner side wall of the sealing head 83. One end of the air delivery pipe 714 passes through the side wall of the sealing ring 84 and extends to the bottom, and a lubricating member 85 is installed on the sealing ring 84.

[0051] Reference Fig. 9 and Fig.10 The lubricating component 85 includes an oil storage cylinder 851 fixedly connected to the upper end of the sealing ring 84. It is particularly noteworthy that the oil storage cylinder 851 is made of high-temperature resistant material and the inner wall is made of heat-insulating material. A plurality of rubber rods 852 are penetrated through the side wall of the oil storage cylinder 851, and a magnetic head 853 is fixedly connected to the end of the plurality of rubber rods 852. A magnetic block matching the magnetic head 853 is provided on the side wall of the air supply pipe 714, and one end of the plurality of rubber rods 852 is fixedly connected to a connecting plate 854, and the side walls of the plurality of connecting plates 854 are fixedly connected with a spring telescopic rod 855 connected to the inner wall of the oil storage cylinder 851.

[0052] Reference Fig.11 A carrier 9 is provided on the conveyor 5, and the carrier 9 includes a conveying channel 91 arranged on the conveyor 5, and a plurality of vertical channels 92 connected thereto are provided on the conveying channel 91, and the plurality of vertical channels 92 are respectively located below the air inlet head 81, and the plurality of vertical channels 92 are respectively connected to the plurality of air inlet heads 81, and a plurality of heat conducting plates 93 are penetrated in the conveying channel 91, and auxiliary rods 94 are fixedly connected to the side walls of the plurality of heat conducting plates 93, and the auxiliary rods 94 are located in the conveyor 5.

[0053] It is more important to note that after the electric furnace 1 melts the scrap steel, the hot exhaust gas can enter the preheating channel 4. During the movement of the exhaust gas, the micro air pump 712 works accordingly, which can cause the air inlet 645 to generate suction, and further allow a part of the exhaust gas to enter the heat-conducting copper cylinder 641. With the assistance of the micro air pump 712, the gas enters the air inlet head 81. It is particularly important to note that before this, the staff can directly install a high-temperature resistant camera or a high-temperature resistant infrared sensor on the side wall of the conduction cylinder 64. When the staff finds that the material is blocked by the conduction cylinder 64, the staff can start the motor to rotate the rotating cylinder 63, which can further allow the material to pass normally. Then, when the motor is working, the conductive cylinder 64 can be rotated, and then the rubber cover 72 is above the air inlet head 81. At this time, the electromagnetic ring 82 is working, and with the assistance of the magnetic ring 76, the rubber cover 72 can be stretched, and further the rubber cover 72 can be sleeved on the air inlet head 81. At this time, a part of the air inlet head 81 will enter the connecting head 71. It is more important to note that when the electromagnetic ring 82 is not working, the magnetic ring 76 can move upward under the action of the spring 75 and the rubber cover 72, so that the rubber cover 72 can be reset. It is more important to note that the rubber cover 72 is similar to the state of the bellows, so that the rubber cover 72 can be reset normally. At the same time, it is particularly important to note that when the air inlet head 81 enters the connecting head 71, In this way, the air delivery pipe 714 can be inserted into the sealing head 83. At this time, when the micro air pump 712 is working, and the baffle 715 gradually rises in height, the gas passes through the baffle 715, which can speed up the flow rate of the gas, and further enable the gas to quickly enter the sealing head 83. It is particularly noteworthy that the air inlet head 81 is on the conveyor 5, and the conveyor 5 is in a vibrating state. It is particularly noteworthy that an elastic rubber ring is provided between the sealing ring 84 and the air delivery pipe 714 to ensure the normal use of the device, and then a magnetic block is provided on the side wall of the air delivery pipe 714, and when the rubber rod 852 is on one side of the magnetic block, the magnetic head 853 can be moved, and the rubber rod 852 can be further subjected to a thrust, so that the lubricating oil can be discharged from the storage The oil cylinder 851 leaks out, and it is particularly noteworthy that the diameter of the rubber rod 852 is small, so that the lubricating oil can be used for a long time, further extending the service life of the device. At the same time, the oil storage cylinder 851 is made of high temperature resistant material, which further avoids the waste of lubricating oil. It is particularly noteworthy that when the magnetic head 853 is not on one side of the magnetic block, the rubber rod 852 can be reset with the assistance of the spring telescopic rod 855, which can further avoid the leakage of lubricating oil. The device lubricates the connection between the air delivery pipe 714 and the sealing ring 84, further ensuring the lubrication effect of the device, thereby extending the service life of the device, and the gas can enter the vertical channel 92 through the air inlet head 81, and then the gas will enter the delivery channel 91,It is particularly noteworthy that the output end of the conveying channel 91 is connected to the exhaust member 3, which further avoids the waste of exhaust gas. At the same time, the exhaust gas with heat enters the base of the conveyor 5, which can further preheat the materials at the bottom, further improving the preheating efficiency of the device. At the same time, the heat conducting plate 93 and the auxiliary rod 94 are made of graphene, which can further preheat the base of the conveyor 5, thereby preheating the waste materials, which can improve the preheating efficiency of the device.

[0054] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0055] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0056] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A preheating device for steel processing, comprising an electric furnace (1), characterized in that: A supporting platform (2) is installed on one side of the circuit (1); A preheating channel (4) and a conveyor (5) are installed on the support platform (2). The conveyor (5) can transport materials into the electric furnace (1). The preheating channel (4) covers the conveyor (5). A suction piece (3) is provided on one side of the support platform (2), the suction piece (3) is located on one side of the preheating channel (4), and one end of the conveyor (5) passes through the suction piece (3) and extends to one side; A heat conducting member (6) is provided on the preheating channel (4), and the heat conducting member (6) is used to improve the preheating efficiency of the material.

2. A preheating device for steel processing according to claim 1, characterized in that: The heat conducting member (6) comprises a groove (61) arranged on the preheating channel (4), a rotating rod (62) connected to the motor is arranged in the groove (61), a rotating cylinder (63) is sleeved on the rotating rod (62), a conducting cylinder (64) is welded on the side wall of the rotating cylinder (63), two symmetrical conducting plates (65) are installed on the side wall of the conducting cylinder (64), and the conducting plates (65) are located near the top of the preheating channel (4).

3. A preheating device for steel processing according to claim 2, characterized in that: The conduction cylinder (64) comprises a heat-conducting copper cylinder (641) mounted on the rotating cylinder (63); a plurality of heat-conducting silver pillars (642) are fixedly connected to the inner side wall of the heat-conducting copper cylinder (641); one end of the plurality of heat-conducting silver pillars (642) is fixedly connected to the same solid copper pillar (643); a plurality of dispersion nets (644) are arranged between the plurality of heat-conducting silver pillars (642); a plurality of air inlet holes (645) are arranged on the side wall of the heat-conducting copper cylinder (641); the plurality of air inlet holes (645) are located in a windward position in the direction of exhaust gas transportation; a plurality of graphene convex thorns (646) are fixedly connected to the inner side wall of the heat-conducting copper cylinder (641); and the graphene convex thorns (646) extend to one side of the dispersion net (644).

4. A preheating device for steel material processing according to claim 3, characterized in that: The conduction plate (65) comprises a heat-conducting copper plate (651) mounted on the side wall of the heat-conducting copper cylinder (641); a plurality of ventilation heat-conducting holes (652) are provided on the side wall of the heat-conducting copper plate (651); a plurality of heat-conducting grooves (653) are provided on the side wall of the heat-conducting copper plate (651); a heat-conducting silver sheet (654) is fixedly connected to the side walls of the plurality of heat-conducting grooves (653); a graphene heat-absorbing sheet (655) is provided in each of the plurality of ventilation heat-conducting holes (652); and the plurality of graphene heat-absorbing sheets (655) are respectively connected to the plurality of heat-conducting silver sheets (654) via a plurality of graphene heat-conducting sheets (656).

5. A preheating device for steel material processing according to claim 3, characterized in that: The connecting member (7) comprises a connecting head (71) mounted on the lower end of the conducting cylinder (64); the connecting head (71) is integrally mounted with a rubber cover (72); a fixing ring (73) is fixedly connected to the inner side wall of the connecting head (71); a connecting ring (74) is fixedly connected to the inner bottom of the rubber cover (72); a plurality of springs (75) are arranged between the connecting ring (74) and the fixing ring (73); the plurality of springs (75) are respectively connected to the connecting ring (74) and the fixing ring (73); and a magnetic ring (76) is fixedly connected to the lower end surface of the rubber cover (72).

6. A preheating device for steel material processing according to claim 5, characterized in that: A micro air pump (712) is provided above the connector (71), the output end of the micro air pump (712) is connected to the input end of the connector (71), the micro air pump (712) is located in a conductive tube (64), a sealing ring (711) is provided at the connection between the conductive tube (64) and the micro air pump (712), an air guide cover (713) is fixedly connected to the inner top end of the connector (71), the output end of the air guide cover (713) is fixedly connected to an air supply pipe (714), a plurality of baffles (715) located at the output end of the micro air pump (712) are fixedly connected to the inner side wall of the air guide cover (713), and the heights of the plurality of baffles (715) gradually increase in the order of gradually approaching the air supply pipe (714).

7. A preheating device for steel material processing according to claim 5, characterized in that: The air intake member (8) comprises an air intake head (81) located below the connecting head (71); an electromagnetic ring (82) matching the magnetic ring (76) is sleeved on the side wall of the air intake head (81); a sealing head (83) is fixedly connected to the input end of the air intake head (81); a sealing ring (84) is fixedly connected to the inner side wall of the sealing head (83); one end of the air supply pipe (714) passes through the side wall of the sealing ring (84) and extends to the bottom; a lubricating member (85) is installed on the sealing ring (84).

8. A preheating device for steel material processing according to claim 7, characterized in that: The lubricating member (85) comprises an oil storage cylinder (851) fixedly connected to the upper end of the sealing ring (84); a plurality of rubber rods (852) are provided through the side wall of the oil storage cylinder (851); magnetic heads (853) are fixedly connected to the ends of the plurality of rubber rods (852); a magnetic block matching the magnetic head (853) is provided on the side wall of the air supply pipe (714); one end of the plurality of rubber rods (852) is fixedly connected to a connecting plate (854); and the side walls of the plurality of connecting plates (854) are fixedly connected to spring telescopic rods (855) connected to the inner wall of the oil storage cylinder (851).

9. A preheating device for steel material processing according to claim 8, characterized in that: The carrier (9) comprises a conveying channel (91) arranged on the conveyor (5); a plurality of vertical channels (92) connected thereto are arranged on the conveying channel (91); the plurality of vertical channels (92) are respectively located below the air inlet heads (81); the plurality of vertical channels (92) are respectively connected to the plurality of air inlet heads (81); a plurality of heat conducting plates (93) are arranged through the conveying channel (91); auxiliary rods (94) are fixedly connected to the side walls of the plurality of heat conducting plates (93); and the auxiliary rods (94) are located in the conveyor (5).

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