A high temperature resistant furnace roller for a constant temperature furnace

Abstract

The present invention relates to the technical field of furnace rollers, and discloses a high-temperature resistant furnace roller for a constant temperature furnace, wherein one end of the furnace roller core shaft is provided with a connection end cover 1, and the other end is provided with a connection end cover 2, and the side of the connection end cover 1 and the connection end cover 2 away from the furnace roller core shaft is provided with a step shaft, and the side of the connection end cover 1 and the connection end cover 2 close to the furnace roller core shaft is fixedly installed with a central connection disk, and the peripheral side of the central connection disk is fixedly connected with a plurality of water pipes. The high-temperature resistant furnace roller for the constant temperature furnace promotes cooling water to circulate in the main cooling water hole through a DC water pump, and the cooling water can take away the heat on the furnace roller core shaft to avoid the accumulation of heat in the furnace roller core shaft causing its deformation, and at the same time, the main cooling water hole is provided on the furnace roller core shaft in multiple inner and outer circles, and the main cooling water holes in the inner and outer circles are staggered, which ensures the overall strength of the furnace roller core shaft while realizing efficient cooling of the furnace roller core shaft.

Description

Technical Field

[0001] The invention relates to the technical field of furnace rollers, in particular to a high-temperature resistant furnace roller for a constant temperature furnace. Background Art

[0002] In the metallurgical and mechanical heat treatment industries, the smelting temperature, annealing and normalizing temperature, quenching and tempering temperature of metal materials have a decisive influence on the organization, mechanical properties and processing properties of metal materials, so the heating temperature of the heating furnace must be kept constant. Constant temperature heating furnace refers to an electric furnace or fuel furnace used for heat treatment of furnace charge. Commonly used heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces and salt bath furnaces. Continuous furnaces are usually used, and workpieces are continuously loaded from the charging door, passed through the furnace, and continuously unloaded from the discharge door. The commonly used method of conveying in the furnace is to load the workpiece on a heat-resistant steel guide rail and transfer it with a step-by-step moving beam or push rod. In recent years, the conveyor roller method has been gradually adopted, which makes the heat treatment operation more rational and increases the possibility of automation and unmanned management of the heat treatment process.

[0003] The furnace roller is set in the constant temperature furnace to transport the material to be heat treated to realize the continuous heat treatment process. The furnace roller in the prior art includes the mandrel outer sleeve, end cover, etc. The furnace roller in the high temperature section operates in a relatively high temperature range and an oxidizing environment heated by an open flame. The furnace roller must be able to maintain the ability to transport high-temperature slabs during long-term continuous operation. In a high-temperature operating environment, heat accumulates in the furnace rollers. The heat received by the furnace rollers cannot be dissipated in time, which will cause the rollers to deform, and in severe cases, the furnace rollers will fail and have a short service life. The furnace rollers need to be stopped for replacement, which greatly affects the operating efficiency. In the prior art, an axial cold water hole is provided in the mandrel, and is connected to the water channel through the end cover. The cooling water is driven to flow through an external circulation device, and an external power supply is required to drive the circulation device, resulting in the consumption of electric energy. In order to improve the cooling efficiency, the circulation device is usually operated at full load, which is easy to cause redundancy of cooling capacity and lead to additional consumption of electric energy. A temperature sensor is provided in the constant temperature furnace, and the power of the circulation device is controlled according to the sensor monitoring data. Although the cooling water flow rate can be adapted to the furnace roller temperature to a certain extent, the temperature sensor is prone to failure when working in a high temperature environment for a long time, resulting in abnormal temperature monitoring data, thereby causing the cooling water flow rate to not match the furnace roller temperature, and the furnace roller cannot be effectively cooled. For this reason, we propose a high-temperature resistant furnace roller for a constant temperature furnace to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a high temperature resistant furnace roller for a constant temperature furnace to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-temperature resistant furnace roller for a constant temperature furnace, comprising a furnace roller core shaft, a connecting end cover 1, a connecting end cover 2 and a DC water pump, the outside of the furnace roller core shaft is wrapped with heat insulation cotton, and the outside of the furnace roller core shaft is sleeved with an outer sleeve, the outer sleeve is fixed to the connecting end cover 1 and the connecting end cover 2 by screws, one end of the furnace roller core shaft is provided with a connecting end cover 1, and the other end is provided with a connecting end cover 2, and the side of the connecting end cover 1 and the connecting end cover 2 away from the furnace roller core shaft is provided with a step shaft, and the side of the connecting end cover 1 and the connecting end cover 2 close to the furnace roller core shaft is fixedly installed A central connecting disk is provided, and a plurality of water pipes are fixedly connected to the peripheral side of the central connecting disk. A plurality of sealing seats are provided on the side of the central connecting disk close to the roller core shaft in the furnace. A plurality of main cooling water holes, plug-in slots and auxiliary cooling water holes are provided on the roller core shaft in the furnace along the axial direction. The main cooling water holes and the auxiliary cooling water holes can allow cooling water to flow. A plug-in board is plugged in the plug-in slot, and a plurality of thermoelectric modules are nested on the plug-in board. The hot end of the thermoelectric module faces the outside of the roller core shaft in the furnace, and the cold end faces the center of the roller core shaft in the furnace. A plurality of thermoelectric modules on the plug-in board are connected in series, and the thermoelectric module is electrically connected to a DC water pump.

[0006] As a further solution of the present invention: the connecting end cover 1 and the connecting end cover 2 are fixedly connected to the roller core shaft in the furnace by screws, the step shafts on the connecting end cover 1 and the connecting end cover 2 are located on the central axis of the roller core shaft in the furnace, and both ends of the roller core shaft in the furnace are provided with installation grooves that cooperate with the center connecting disk and the water guide pipe. Space is reserved at the end of the roller core shaft in the furnace to achieve avoidance of the center connecting disk and the water guide pipe on the connecting end cover 1 and the connecting end cover 2, thereby ensuring the smooth flow of the cooling water channel.

[0007] As a further solution of the present invention: a connecting pipe is welded to one end of the upper step shaft of the connecting end cover 1, and the end of the connecting pipe is threadedly connected to a rotating joint and a conductive slip ring is arranged on the circumferential side; one end of the upper step shaft of the connecting end cover 2 is threadedly connected to a rotating joint; the connecting wire of the thermoelectric module passing through the threading tube can be electrically connected to the DC water pump through the conductive slip ring, thereby ensuring that when the roller core shaft in the furnace rotates, the thermoelectric module and the DC water pump can still be electrically connected, thereby realizing stable power supply to the DC water pump.

[0008] As a further solution of the present invention: a plurality of installation slots are provided on the plug board, the thermoelectric modules are nested inside the installation slots, a wire groove is provided at the bottom of the plug board, a wire threading tube is provided in the central connecting plate on one side of the connecting end cover, and one end of the wire threading tube passes through the side wall of the connecting tube, the connecting wires of the thermoelectric module are laid along the wire groove, passed through the wire threading tube, and electrically connected to the DC water pump through a conductive slip ring to achieve stable power supply to the DC water pump.

[0009] As a further solution of the present invention: the interior of the mounting slot is filled with a thermally conductive filler located at both ends of the thermoelectric module, and the thermally conductive filler includes but is not limited to thermally conductive silicone grease. By arranging the thermally conductive filler, the hot end of the thermoelectric module can fully absorb the residual heat of the roller core shaft in the furnace, and at the same time, the auxiliary cooling water hole can effectively cool the cold end of the thermoelectric module, thereby increasing the temperature difference between the two working ends of the thermoelectric module and improving the power generation effect.

[0010] As a further solution of the present invention: the auxiliary cooling water hole is located in the inner circle of the plug-in slot, and the position of the auxiliary cooling water hole corresponds to the plug-in slot one by one. The spacing between the top of the auxiliary cooling water hole and the bottom of the plug-in slot is 2-5mm. The cooling water flows in the auxiliary cooling water hole, which can cool the cold end of the thermoelectric module, increase the temperature difference between the two working ends of the thermoelectric module, and improve power generation.

[0011] As a further solution of the present invention: the plug-in groove is located in the inner circle of the main cooling water hole, the main cooling water hole is located on the roller core shaft in the furnace near the edge, the main cooling water hole is arranged as an inner and outer circle as a whole, and the main cooling water holes in the inner and outer circles are staggered, the main cooling water holes are arranged in multiple inner and outer circles on the roller core shaft in the furnace, and the main cooling water holes in the inner and outer circles are staggered, which ensures the overall strength of the roller core shaft in the furnace and can achieve efficient cooling of the roller core shaft in the furnace.

[0012] As a further solution of the present invention: a water supply pipe is fixedly mounted on the rotary joint on one side of the connecting end cover, and the end of the water supply pipe away from the rotary joint is fixedly connected to the water outlet of the DC water pump. The DC water pump pushes cooling water to circulate in the main cooling water hole. The cooling water can take away the heat on the roller core shaft in the furnace, thereby preventing heat from accumulating in the roller core shaft in the furnace and causing its deformation.

[0013] As a further solution of the present invention: the position of the water pipe on the side of the center connecting disk corresponds to the main cooling water hole, and the end of the water pipe is welded with a sealing end. Through the cooperation of the center connecting disk and the water pipe, cooling water can be supplied to the main cooling water hole, so that the cooling water circulates in the main cooling water hole, thereby realizing efficient cooling of the roller core shaft in the furnace.

[0014] As a further solution of the present invention: the sealing seat corresponds to the position of the auxiliary cooling water hole, the sealing seat can be snapped into the end of the auxiliary cooling water hole, the auxiliary cooling water hole is connected with the center connecting disk through the sealing seat, and the center connecting disk and the auxiliary cooling water hole are connected through the sealing seat, so that the cooling water can circulate in the auxiliary cooling water hole to achieve cooling of the cold end of the thermoelectric module.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The high-temperature resistant furnace roller used in the constant temperature furnace promotes cooling water to circulate in the main cooling water hole through a DC water pump. The cooling water can take away the heat on the furnace roller core shaft to avoid heat accumulation in the furnace roller core shaft causing its deformation. At the same time, the main cooling water holes are arranged on the furnace roller core shaft in multiple circles inside and outside, and the main cooling water holes in the inner and outer circles are staggered. While ensuring the overall strength of the furnace roller core shaft, it can achieve efficient cooling of the furnace roller core shaft, reduce the temperature of the furnace roller core shaft below the allowable temperature, and increase the service life of the furnace roller core shaft.

[0017] 2. The high-temperature resistant furnace roller used in the constant temperature furnace is provided with a ring-shaped plug-in board on the inner side of the furnace roller core shaft, and a plurality of thermoelectric modules are nested on the plug-in board. At the same time, an auxiliary cooling water hole cooperating with the thermoelectric module is opened on the furnace roller core shaft. The hot end of the thermoelectric module faces outward, and the residual heat of the furnace roller core shaft can be absorbed. The cooling water flows inside the auxiliary cooling water hole to cool the cold end of the thermoelectric module, so that a temperature difference is generated at the two working ends of the thermoelectric module to generate electricity and supply electricity to the DC water pump. No external power supply is required to power the DC water pump, thereby reducing energy consumption.

[0018] 3. The high-temperature resistant furnace roller used in the constant temperature furnace, when the temperature of the furnace roller core shaft is higher, the temperature difference between the inside and outside of the thermoelectric module is greater, and the voltage emitted by the thermoelectric module is higher, and the DC water pump can adjust the power according to the voltage, so that the DC water pump can automatically adjust the power according to the temperature of the furnace roller core shaft. When the temperature of the furnace roller core shaft rises, the DC water pump can increase the cooling water flow rate to make the cooling water flow rate match the temperature of the furnace roller core shaft, thereby achieving effective cooling of the furnace roller core shaft, thereby improving the high temperature resistance of the furnace roller core shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure after the overall combination of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of connecting the inner and outer sides of the end cover in the present invention;

[0021] Figure 3 It is a structural schematic diagram of the step shaft section in the present invention;

[0022] Figure 4 It is a schematic structural diagram of the peripheral side of the central connecting disk in the present invention;

[0023] Figure 5 It is a structural schematic diagram of the end of the roller core shaft in the furnace of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the top of the plug board in the present invention;

[0025] Figure 7 It is a structural schematic diagram of the bottom of the plug board in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the axial section of the roller core shaft in the furnace of the present invention;

[0027] Fig. 9 For the present invention Figure 8 A schematic diagram of the structure enlarged at A;

[0028] Fig.10 It is a structural schematic diagram of a partial cross section of a roller core shaft in a furnace in the present invention;

[0029] Fig.11 It is a structural schematic diagram of the installation position of the thermal insulation cotton in the present invention.

[0030] In the figure: 1. roller core shaft in the furnace; 2. connecting end cover 1; 3. connecting end cover 2; 4. step shaft; 5. connecting pipe; 6. conductive slip ring; 7. rotary joint; 8. DC water pump; 9. center connecting plate; 10. water guide pipe; 11. sealing end; 12. sealing seat; 13. threading pipe; 14. main cooling water hole; 15. plug-in slot; 16. auxiliary cooling water hole; 17. plug-in board; 18. mounting slot; 19. thermoelectric module; 20. wiring trough; 21. thermal conductive filler; 22. thermal insulation cotton; 23. outer sleeve. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1:

[0033] See also Figure 1-10In an embodiment of the present invention, a high temperature resistant furnace roller for a constant temperature furnace includes a furnace roller core shaft 1 and a DC water pump 8. The DC water pump 8 drives cooling water to circulate in the main cooling water hole 14. The cooling water can take away the heat on the furnace roller core shaft 1 to prevent the heat from accumulating in the furnace roller core shaft 1 and causing its deformation. A connecting end cover 1 2 is provided at one end of the furnace roller core shaft 1, and a connecting end cover 2 3 is provided at the other end. The connecting end cover 1 2 and the connecting end cover 2 3 are both provided with a step shaft 4 on the side away from the furnace roller core shaft 1, and the connecting end cover 1 2 and the connecting end cover 2 3 are both provided with a step shaft 4 on the side close to the furnace roller core shaft 1. A central connection plate 9 is fixedly installed, and a plurality of water pipes 10 are fixedly connected to the peripheral side of the central connection plate 9. A plurality of sealing seats 12 are arranged on the side of the central connection plate 9 close to the roller core shaft 1 in the furnace. A plurality of main cooling water holes 14, plug-in slots 15 and auxiliary cooling water holes 16 are opened on the roller core shaft 1 in the furnace in the axial direction. The main cooling water holes 14 are arranged on the roller core shaft 1 in the furnace in multiple circles inside and outside, and the main cooling water holes 14 in the inner and outer circles are staggered. While ensuring the overall strength of the roller core shaft 1 in the furnace, the roller core shaft 1 in the furnace can be efficiently cooled. The main cooling water holes 14 and the auxiliary cooling water holes 16 The cooling water can flow through the auxiliary cooling water hole 16, which can cool down the cold end of the thermoelectric module 19, so that a temperature difference is generated at the two working ends of the thermoelectric module 19, thereby generating efficient power generation. A plug-in board 17 is plugged into the plug-in slot 15, and a plurality of thermoelectric modules 19 are nested on the plug-in board 17. The hot end of the thermoelectric module 19 faces the outside of the roller core shaft 1 in the furnace, and the cold end faces the center of the roller core shaft 1 in the furnace. The hot end of the thermoelectric module 19 faces the outside, which can absorb the residual heat of the roller core shaft 1 in the furnace, and the cooling water flows inside the auxiliary cooling water hole 16 to cool the thermoelectric module 19. The end is cooled down, so that a temperature difference is generated at the two working ends of the thermoelectric module 19 to generate electricity, and power is supplied to the DC water pump 8. The thermoelectric modules 19 on the several plug-in boards 17 are connected in series, and several thermoelectric modules 19 are connected in series, and the thermoelectric modules 19 are electrically connected to the DC water pump 8. When the temperature of the roller core shaft 1 in the furnace is higher, the greater the temperature difference between the two working ends of the thermoelectric module 19, the higher the voltage emitted by the thermoelectric module 19, and the higher the actual output power of the DC water pump 8, the cooling water flow rate can be increased to match the temperature of the roller core shaft 1 in the furnace, thereby achieving effective cooling of the roller core shaft 1 in the furnace.

[0034] As a further implementation scheme of the above invention: the connecting end cover 1 2 and the connecting end cover 2 3 are fixedly connected to the roller core shaft 1 in the furnace by screws, and the step shaft 4 on the connecting end cover 1 2 and the connecting end cover 2 3 is located on the central axis of the roller core shaft 1 in the furnace, and the roller core shaft 1 in the furnace can be installed through the step shaft 4 to ensure that the roller core shaft 1 in the furnace can rotate stably after installation, and both ends of the roller core shaft 1 in the furnace are provided with installation grooves that cooperate with the center connecting disk 9 and the water guide pipe 10, and space is reserved at the end of the roller core shaft 1 in the furnace to achieve the avoidance of the center connecting disk 9 and the water guide pipe 10 on the connecting end cover 1 2 and the connecting end cover 2 3, thereby ensuring the smooth flow of the cooling water channel.

[0035] As a further implementation scheme of the above invention: one end of the step shaft 4 on the connecting end cover 2 is welded with a connecting pipe 5, and the end of the connecting pipe 5 is threadedly connected with a rotary joint 7, and a conductive slip ring 6 is arranged on the circumferential side. The connecting wire of the thermoelectric module 19 passing through the threading tube 13 can be electrically connected to the DC water pump 8 through the conductive slip ring 6, ensuring that when the roller core shaft 1 in the furnace rotates, the thermoelectric module 19 and the DC water pump 8 can still be electrically connected, thereby realizing stable power supply to the DC water pump 8, and one end of the step shaft 4 on the connecting end cover 2 3 is threadedly connected with a rotary joint 7. By setting the rotary joint 7, it is ensured that while the roller core shaft 1 in the furnace rotates stably, the main cooling water hole 14 and the auxiliary cooling water hole 16 can still be stably supplied with water, thereby realizing effective cooling of the roller core shaft 1 in the furnace and improving the high temperature resistance of the roller core shaft 1 in the furnace.

[0036] As a further implementation scheme of the above invention: a plurality of mounting slots 18 are provided on the plug board 17, and the thermoelectric module 19 is nested inside the mounting slots 18. The thermoelectric module 19 is restricted by the mounting slots 18 to ensure the stability of the thermoelectric module 19 during operation. A wire groove 20 is provided at the bottom of the plug board 17, and a wire tube 13 is provided in the central connecting plate 9 on one side of the connecting end cover 2, and one end of the wire tube 13 passes through the side wall of the connecting tube 5. The connecting wires of the thermoelectric module 19 are laid along the wire groove 20, pass through the wire tube 13, and are electrically connected to the DC water pump 8 through the conductive slip ring 6 to achieve stable power supply to the DC water pump 8.

[0037] As a further implementation scheme of the above invention: the interior of the mounting slot 18 is filled with a thermally conductive filler 21 located at both ends of the thermoelectric module 19, and the thermally conductive filler 21 includes but is not limited to thermally conductive silicone grease. By providing the thermally conductive filler 21, the two working ends of the thermoelectric module 19 can be in close contact with the roller core shaft 1 in the furnace, so that the hot end of the thermoelectric module 19 can fully absorb the residual heat of the roller core shaft 1 in the furnace, and at the same time, the auxiliary cooling water hole 16 can effectively cool down the cold end of the thermoelectric module 19, thereby increasing the temperature difference between the two working ends of the thermoelectric module 19 and improving the power generation effect.

[0038] As a further implementation scheme of the above invention: the auxiliary cooling water hole 16 is located in the inner circle of the plug-in slot 15, and the position of the auxiliary cooling water hole 16 corresponds one-to-one with the plug-in slot 15, and the spacing between the top of the auxiliary cooling water hole 16 and the bottom of the plug-in slot 15 is 2-5mm. The cooling water flows in the auxiliary cooling water hole 16, which can cool the cold end of the thermoelectric module 19, increase the temperature difference between the two working ends of the thermoelectric module 19, and improve the power generation.

[0039] As a further implementation scheme of the above invention: the plug-in groove 15 is located in the inner circle of the main cooling water hole 14, and the main cooling water hole 14 is located on the roller core shaft 1 in the furnace near the edge. The main cooling water hole 14 is arranged as an inner and outer circle as a whole, and the main cooling water holes 14 in the inner and outer circles are staggered. The main cooling water holes 14 are arranged in multiple inner and outer circles on the roller core shaft 1 in the furnace, and the main cooling water holes 14 in the inner and outer circles are staggered. While ensuring the overall strength of the roller core shaft 1 in the furnace, the roller core shaft 1 in the furnace can be efficiently cooled, and the temperature of the roller core shaft 1 in the furnace can be reduced to below the allowable temperature.

[0040] As a further implementation scheme of the above invention: a water supply pipe is fixedly mounted on the rotary joint 7 connected to one side of the end cover 2, and the end of the water supply pipe away from the rotary joint 7 is fixedly connected to the water outlet of a DC water pump 8. The DC water pump 8 pushes cooling water to circulate in the main cooling water hole 14. The cooling water can take away the heat on the roller core shaft 1 in the furnace, thereby preventing heat from accumulating in the roller core shaft 1 in the furnace and causing its deformation.

[0041] As a further implementation scheme of the above invention: the position of the water pipe 10 on the side of the center connecting disk 9 corresponds to the main cooling water hole 14, and a sealing end 11 is welded to the end of the water pipe 10. Through the cooperation of the center connecting disk 9 and the water pipe 10, cooling water can be supplied to the main cooling water hole 14, so that the cooling water circulates in the main cooling water hole 14 to achieve efficient cooling of the roller core shaft 1 in the furnace. At the same time, the sealing end 11 is provided to improve the sealing performance of the contact position between the water pipe 10 and the main cooling water hole 14 to prevent cooling water leakage.

[0042] As a further implementation scheme of the above invention: the sealing seat 12 corresponds to the position of the auxiliary cooling water hole 16, the sealing seat 12 can be snapped into the end of the auxiliary cooling water hole 16, the auxiliary cooling water hole 16 is connected with the center connecting disk 9 through the sealing seat 12, and the center connecting disk 9 and the auxiliary cooling water hole 16 are connected through the sealing seat 12, so that the cooling water can circulate in the auxiliary cooling water hole 16 to achieve cooling of the cold end of the thermoelectric module 19. At the same time, the sealing seat 12 can also improve the sealing of the contact position between the auxiliary cooling water hole 16 and the center connecting disk 9 to prevent cooling water leakage.

[0043] Embodiment 2:

[0044] See also Fig.11The outside of the furnace roller core shaft 1 is wrapped with insulation cotton 22, and the outside of the furnace roller core shaft 1 is covered with an outer sleeve 23, the outer sleeve 23 is fixed to the connecting end cover 1 2 and the connecting end cover 2 3 by screws, the insulation cotton 22 is ceramic fiber insulation cotton, and the insulation cotton 22 is pressed onto the outside of the furnace roller core shaft 1 by a press. Through the setting of the insulation cotton 22, the insulation capacity of the furnace roller is improved, and the heat in the constant temperature furnace is reduced. The transfer to the furnace roller core shaft 1 is reduced. The outer sleeve 23 is made of high-temperature heat-resistant alloy steel Cr28Ni48W5 material to ensure that the outer sleeve 23 has high strength even at high temperatures.

[0045] During specific implementation: the furnace roller is installed in a constant temperature furnace through the step shaft 4, and the water inlet of the DC water pump 8 and one end of the rotary joint 7 on the connecting end cover 3 are connected to the water storage device and the cooling water cooling device in the prior art. The water storage device can be a water storage tank, and the cooling water cooling device can be a chiller; when the temperature of the furnace roller core shaft 1 rises during operation, the hot ends of several thermoelectric modules 19 in the plug-in board 17 absorb the heat on the furnace roller core shaft 1, so that a temperature difference is generated between the hot end and the cold end of the thermoelectric module 19, and multiple thermoelectric modules 19 cooperate to generate electricity to supply electricity to the DC water pump 8, and the DC water The pump 8 pushes the cooling water along the water supply pipe through the rotary joint 7 on the connecting end cover 2 into the connecting pipe 5, and enters the central connecting plate 9 on the connecting end cover 2, enters the main cooling water hole 14 through the water guide pipe 10, enters the auxiliary cooling water hole 16 through the sealing seat 12, and returns to the cooling water cooling device through the water guide pipe 10, the sealing seat 12, the central connecting plate 9, and the rotary joint 7 on the connecting end cover 23. After the cooling water is cooled by the cooling water cooling device, the cooling water is supplied to the DC water pump 8, and circulates in the main cooling water hole 14 and the auxiliary cooling water hole 16. The rotary joint 7 is set to make the roller core shaft in the furnace While the roller core shaft 1 in the furnace is rotating stably, the main cooling water hole 14 and the auxiliary cooling water hole 16 can still be stably supplied with water. The conductive slip ring 6 is electrically connected to the DC water pump 8 to ensure that the thermoelectric module 19 and the DC water pump 8 can still be electrically connected when the roller core shaft 1 in the furnace is rotating. The cooling water circulates in the roller core shaft 1 in the furnace, which can take away most of the heat on the roller core shaft 1 in the furnace, so that the temperature of the roller core shaft 1 in the furnace is reduced to below the allowable temperature. At the same time, the main cooling water holes 14 are arranged on the roller core shaft 1 in the furnace in multiple circles, and the main cooling water holes 14 in the inner and outer circles are staggered, which can realize the effective cooling of the roller core shaft 1 in the furnace, and provide High temperature resistance of the roller core shaft 1 in the blast furnace; the thermoelectric module 19 continues to absorb the residual heat of the roller core shaft 1 in the furnace, and the cooling water flows in the auxiliary cooling water hole 16 to cool down the cold end of the thermoelectric module 19, so that there is a large temperature difference between the hot end and the cold end of the thermoelectric module 19, stable power generation is performed, and a stable power supply is provided to the DC water pump 8. A heat-conductive filler 21 is provided so that the two working ends of the thermoelectric module 19 can be in close contact with the roller core shaft 1 in the furnace, so that the hot end of the thermoelectric module 19 can fully absorb the residual heat of the roller core shaft 1 in the furnace, and at the same time, the auxiliary cooling water hole 16 can effectively cool down the cold end of the thermoelectric module 19;When the temperature of the roller core shaft 1 in the furnace increases, the residual heat at the center of the roller core shaft 1 in the furnace increases, the heat absorbed by the hot end of the thermoelectric module 19 increases, the temperature difference between the hot end and the cold end of the thermoelectric module 19 increases, the power generation increases, and the power supply to the DC water pump 8 increases, so the actual output power of the DC water pump 8 increases. The actual output power of the DC water pump 8 can be adaptively adjusted according to the temperature of the roller core shaft 1 in the furnace. The higher the temperature of the roller core shaft 1 in the furnace, the greater the actual output power of the DC water pump 8, the faster the cooling water flows in the main cooling water hole 14, and the cooling water flow rate is adapted to the temperature of the roller core shaft 1 in the furnace, so as to achieve effective cooling of the roller core shaft 1 in the furnace; the heat insulation cotton 22 made of ceramic fiber heat insulation cotton is arranged between the roller core shaft 1 in the furnace and the outer sleeve 23 to improve the heat insulation capacity of the roller in the furnace and reduce the heat in the constant temperature furnace from being transferred to the roller core shaft 1 in the furnace. ;

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high temperature resistant furnace roller for a constant temperature furnace, comprising a furnace roller core shaft (1), a first connecting end cover (2), a second connecting end cover (3) and a DC water pump (8), wherein the furnace roller core shaft (1) is wrapped with heat insulating cotton (22), and the furnace roller core shaft (1) is sleeved with an outer sleeve (23), wherein the outer sleeve (23) is fixed to the first connecting end cover (2) and the second connecting end cover (3) by screws, and wherein: One end of the furnace roller core shaft (1) is provided with a connecting end cover 1 (2), and the other end is provided with a connecting end cover 2 (3), and the side of the connecting end cover 1 (2) and the connecting end cover 2 (3) away from the furnace roller core shaft (1) is provided with a stepped shaft (4), and the side of the connecting end cover 1 (2) and the connecting end cover 2 (3) close to the furnace roller core shaft (1) is fixedly installed with a central connecting plate (9), and the peripheral side of the central connecting plate (9) is fixedly connected with a plurality of water guide pipes (10), and the side of the central connecting plate (9) close to the furnace roller core shaft (1) is provided with a plurality of sealing seats (12), and the upper side of the furnace roller core shaft (1) is provided with a plurality of sealing seats (12). A plurality of main cooling water holes (14), plug-in slots (15) and auxiliary cooling water holes (16) are provided in the direction of the furnace, wherein the main cooling water holes (14) and the auxiliary cooling water holes (16) are provided for cooling water to flow, a plug-in board (17) is plugged into the plug-in slot (15), and a plurality of thermoelectric modules (19) are embedded on the plug-in board (17), wherein the hot end of the thermoelectric module (19) faces the outside of the roller core shaft (1) in the furnace, and the cold end faces the center of the roller core shaft (1) in the furnace, and the plurality of thermoelectric modules (19) on the plug-in board (17) are connected in series, and the thermoelectric modules (19) are electrically connected to a DC water pump (8); The auxiliary cooling water hole (16) is located in the inner circle of the plug-in slot (15), and the position of the auxiliary cooling water hole (16) corresponds to the plug-in slot (15) one-to-one. The distance between the top of the auxiliary cooling water hole (16) and the bottom of the plug-in slot (15) is 2-5 mm.

2. The high temperature resistant furnace roller for a constant temperature furnace according to claim 1, characterized in that: The connecting end cover 1 (2) and the connecting end cover 2 (3) are fixedly connected to the roller core shaft (1) in the furnace by means of screws; the step shafts (4) on the connecting end cover 1 (2) and the connecting end cover 2 (3) are located on the central axis of the roller core shaft (1) in the furnace; and both ends of the roller core shaft (1) in the furnace are provided with mounting grooves that cooperate with the central connecting plate (9) and the water guide pipe (10).

3. The high temperature resistant furnace roller for a constant temperature furnace according to claim 1, characterized in that: A connecting pipe (5) is welded to one end of the step shaft (4) on the first connecting end cover (2), and a rotary joint (7) is threadedly connected to the end of the connecting pipe (5), and a conductive slip ring (6) is arranged on the circumferential side, and a rotating joint (7) is threadedly connected to one end of the step shaft (4) on the second connecting end cover (3).

4. The high temperature resistant furnace roller for a constant temperature furnace according to claim 3, characterized in that: The plug board (17) is provided with a plurality of mounting slots (18), the thermoelectric modules (19) are nested inside the mounting slots (18), a wiring slot (20) is provided at the bottom of the plug board (17), a wire threading tube (13) is provided in the central connecting plate (9) on one side of the connecting end cover (2), and one end of the wire threading tube (13) is extended out along the side wall of the connecting tube (5).

5. The high temperature resistant furnace roller for a constant temperature furnace according to claim 4, characterized in that: The interior of the mounting slot (18) is filled with a heat-conducting filler (21) located at both ends of the thermoelectric module (19), and the heat-conducting filler (21) includes but is not limited to heat-conducting silicone grease.

6. The high temperature resistant furnace roller for a constant temperature furnace according to claim 1, characterized in that: The insertion groove (15) is located in the inner circle of the main cooling water hole (14); the main cooling water hole (14) is located on the roller core shaft (1) in the furnace near the edge; the main cooling water hole (14) is arranged as an inner and outer circle as a whole, and the main cooling water holes (14) in the inner and outer circles are staggered.

7. The high temperature resistant furnace roller for a constant temperature furnace according to claim 3, characterized in that: A water supply pipe is fixedly sleeved on the rotary joint (7) on one side of the connecting end cover (2), and one end of the water supply pipe away from the rotary joint (7) is fixedly connected to the water outlet of the DC water pump (8).

8. The high temperature resistant furnace roller for a constant temperature furnace according to claim 1, characterized in that: The position of the water guide pipe (10) on the peripheral side of the central connection plate (9) corresponds to the main cooling water hole (14), and a sealing end (11) is welded to the end of the water guide pipe (10).

9. The high temperature resistant furnace roller for a constant temperature furnace according to claim 1, characterized in that: The sealing seat (12) corresponds to the position of the auxiliary cooling water hole (16); the sealing seat (12) can be snap-fitted to the end of the auxiliary cooling water hole (16); and the auxiliary cooling water hole (16) is connected to the central connecting plate (9) through the sealing seat (12).

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