A multi-segment continuous roller furnace

Abstract

The present application discloses a multi-stage continuous roller furnace, which includes at least one low-temperature furnace body, at least one high-temperature furnace body, and a discharging and cooling mechanism; the discharging end of the low-temperature furnace body is connected to the feeding end of the high-temperature furnace body, and the discharging end of the high-temperature furnace body is connected to the discharging and cooling mechanism; the height of the discharging end of the low-temperature furnace body is lower than the height of the feeding end of the low-temperature furnace body; the low-temperature furnace body includes a low-temperature furnace shell, a low-temperature furnace lining, a low-temperature roller, and a low-temperature heating component, and the height of the discharging end of the high-temperature furnace body is lower than the height of the feeding end of the high-temperature furnace body; the high-temperature furnace body includes a high-temperature furnace shell, a high-temperature furnace lining, a high-temperature roller, and a high-temperature heating component. The present application can perform operations of low-temperature preheating and high-temperature heating on materials, reduce heat loss, improve the service life of the heating system, and can discharge materials by using the self-weight of the materials, thereby effectively saving energy.

Description

Technical Field

[0001] The present invention relates to a heating furnace, and more particularly to a multi-section continuous drum furnace. Background Art

[0002] The drum furnace is mainly applicable to the heating treatment such as drying, roasting, coating and granulation of battery graphite materials. The drum furnace in the prior art often realizes the processes of drying and roasting of materials by adjusting the temperature of a single furnace body. However, in the process of temperature adjustment, it is often unable to effectively implement batch continuous operation for processes with different temperature ranges and different operations. Because it is concentrated in the same tank body, it often leads to defects such as frequent temperature changes, incomplete reaction and long time consumption.

[0003] With the development of technology, there appears a split drum furnace that heats materials separately by using a low-temperature furnace and a high-temperature furnace. However, such a method still has the following problems: Since multiple heating furnaces are used, the discharge of materials in each heating furnace may be incomplete, resulting in the problem of material extrusion; in addition, since multiple heating furnaces are used for heating, the heating system of each heating furnace may have problems, thus increasing the workload of maintenance. Summary of the Invention

[0004] The purpose of the present application is to solve the problems of easy backlog of discharge and difficult maintenance of multiple heating furnaces, and provide a multi-section continuous drum furnace.

[0005] A multi-section continuous drum furnace provided by the present application adopts the following technical solutions:

[0006] A multi-section continuous drum furnace includes at least one low-temperature section furnace body, at least one high-temperature section furnace body and a discharge cooling mechanism; the discharge end of the low-temperature section furnace body is connected to the feed end of the high-temperature section furnace body, and the discharge end of the high-temperature section furnace body is connected to the discharge cooling mechanism;

[0007] The low-temperature section furnace body is connected to a low-temperature furnace driving mechanism, and the low-temperature furnace driving mechanism can drive the low-temperature section furnace body to rotate. The feed end of the low-temperature section furnace body is connected to a feeding mechanism, and the discharge end of the low-temperature section furnace body is connected to the feed end of the high-temperature section furnace body, and the height of the discharge end of the low-temperature section furnace body is lower than the height of the feed end of the low-temperature section furnace body; the low-temperature section furnace body includes a low-temperature furnace shell, a low-temperature furnace lining, a low-temperature drum and a low-temperature heating assembly. The inner wall of the low-temperature furnace shell is provided with a low-temperature furnace lining, and the low-temperature heating assembly is arranged between the low-temperature furnace shell and the low-temperature drum. The low-temperature heating assembly includes a plurality of low-temperature heating parts, and each low-temperature heating part is distributed along the length direction of the low-temperature drum, and each low-temperature heating part is independently controlled;

[0008] The high-temperature section furnace body is connected to the high-temperature furnace driving mechanism. The high-temperature furnace driving mechanism can drive the high-temperature section furnace body to rotate. The discharge end of the high-temperature section furnace body is connected to the discharge cooling mechanism, and the height of the discharge end of the high-temperature section furnace body is lower than the height of the feed end of the high-temperature section furnace body. The high-temperature section furnace body includes a high-temperature furnace shell, a high-temperature furnace lining, a high-temperature roller, and a high-temperature heating assembly. The inner wall of the high-temperature furnace shell is provided with a high-temperature furnace lining. The high-temperature heating assembly is arranged between the high-temperature furnace shell and the high-temperature roller. The high-temperature heating assembly includes a plurality of high-temperature heating parts, and each high-temperature heating part is distributed along the length direction of the high-temperature roller, and each high-temperature heating part is independently controlled.

[0009] Through the above technical solution, by setting the low-temperature section furnace body and the high-temperature section furnace body, operations such as low-temperature preheating and high-temperature heating of the material can be carried out, heat loss can be reduced, and temperature adjustment does not need to be carried out frequently, thereby improving the service life of the heating system. In addition, the height of the feed end of the low-temperature furnace section body and the high-temperature section furnace body is greater than the height of the discharge end, that is, the low-temperature section furnace body and the high-temperature section furnace body have an inclination, which can use the self-weight of the material for discharging, thereby effectively saving energy. In addition, the heating assemblies of the low-temperature section furnace body and the high-temperature section furnace body are independently controlled in sections. If there is a problem, it is convenient to repair and replace separately, which can improve the repair speed.

[0010] As a preference of the present invention, a plurality of baffle plates distributed along the length direction of the low-temperature roller or the high-temperature roller are arranged in both the low-temperature roller and the high-temperature roller, and each baffle plate is distributed along the radial direction of the low-temperature roller or the high-temperature roller.

[0011] Through the above technical solution, by setting the baffle plates, the materials bonded together in the low-temperature roller or the high-temperature roller can be dispersed when the low-temperature roller or the high-temperature roller rotates, which is convenient for the discharge of the materials and can also make the heating of the materials uniform.

[0012] As a preference of the present invention, a first aggregate bin is connected to the discharge end of the low-temperature section furnace body. The upper end of the first aggregate bin is connected to the discharge end of the low-temperature section furnace body, and the lower end of the first aggregate bin is connected to the feed end of the high-temperature section furnace body. A second aggregate bin is connected to the discharge end of the high-temperature section furnace body. The upper end of the second aggregate bin is connected to the discharge end of the high-temperature section furnace body, and the lower end of the second aggregate bin is connected to the feed end of the discharge cooling mechanism.

[0013] Through the above technical solution, by setting the aggregate bins, it is convenient for the discharge of the materials.

[0014] As a preference of the present invention, electric rotary feed valves are arranged at the lower discharge ports of the first aggregate bin and the second aggregate bin.

[0015] Through the above technical solution, by arranging an electric rotary feeder valve at the lower discharge ports of the first aggregate bin and the second aggregate bin, it can not only effectively crush large-sized materials but also drive the flow of materials.

[0016] As a preference of the present invention, a first automatic nitrogen protection system is arranged inside the low-temperature drum; the first automatic nitrogen protection system is arranged at the discharge end of the low-temperature drum; the first automatic nitrogen protection system includes a first nitrogen inlet pipe, one end of the first nitrogen inlet pipe penetrates through the first aggregate bin and extends into the low-temperature drum, and the other end is connected to a nitrogen supply system; a second automatic nitrogen protection system is arranged inside the high-temperature drum; the second automatic nitrogen protection system is arranged at the discharge end of the high-temperature drum; the second automatic nitrogen protection system includes a second nitrogen inlet pipe, one end of the second nitrogen inlet pipe penetrates through the second aggregate bin and extends into the high-temperature drum, and the other end is connected to the nitrogen supply system.

[0017] Through the above technical solution, by arranging a nitrogen protection system, nitrogen can be continuously conveyed into the low-temperature drum and the high-temperature drum, which can effectively prevent the materials from being oxidized. At the same time, by conveying nitrogen from the discharge end to the feed end, nitrogen can fill the entire low-temperature drum or high-temperature drum.

[0018] As a preference of the present invention, the low-temperature furnace body, the high-temperature furnace body, and the discharge cooling mechanism are arranged on the frame. The low-temperature furnace body is arranged at the uppermost end of the frame, the discharge cooling mechanism is arranged at the lowermost end of the frame, and the high-temperature furnace body is arranged between the low-temperature furnace body and the discharge cooling mechanism.

[0019] Through the above technical solution, arranging the low-temperature furnace body, the high-temperature furnace body, and the discharge cooling mechanism in the up-and-down direction can effectively reduce the requirement for the plant area.

[0020] As a preference of the present invention, the low-temperature heating part includes a heating base and heating wires arranged on the heating base. A moving plate is also arranged on the heating base. Slots distributed along the axial direction of the low-temperature furnace shell are further arranged on the low-temperature furnace shell; one end of the moving plate is connected to the heating base, and the other end passes through the slots on the low-temperature furnace shell and is connected to a slider. The slider is matched with a guide seat arranged on the low-temperature furnace shell, and the slider can slide on the guide seat.

[0021] Through the above technical solution, the low-temperature heating part heats the low-temperature drum through the heating wire on the heating base. In addition, the heating base can be driven to move by the moving plate, and the moving plate is driven to move by the slider arranged outside the low-temperature furnace shell, so that the movement of the heating base in the low-temperature drum can be realized. When a certain low-temperature heating part in the low-temperature drum fails, the adjacent low-temperature heating part can be moved, and the power of the moved low-temperature heating part can be increased, so as to replace the function of the faulty low-temperature heating part; this avoids the need to disassemble the low-temperature section of the furnace body for maintenance.

[0022] As a preference of the present invention, a plurality of partition plates are further arranged in the low-temperature section of the furnace body. The partition plates are sleeved on the low-temperature drum, and each partition plate is distributed along the axial direction of the low-temperature drum. Avoidance grooves for the low-temperature heating part and the moving plate to pass through are further arranged on the partition plates.

[0023] Through the above technical solution, by arranging the partition plates, the low-temperature section of the furnace body can be divided into multiple areas for temperature monitoring. In addition, the avoidance grooves for the low-temperature heating part and the moving plate to pass through are arranged on the partition plates, which facilitates the adjustment of the positions of the low-temperature heating parts after a failure occurs.

[0024] As a preference of the present invention, temperature sensors are arranged in the space between two adjacent partition plates, and the temperature sensors are arranged at one end far from the side wall of the low-temperature drum.

[0025] Through the above technical solution, by arranging the temperature sensors, when a low-temperature heating part fails, the operating conditions of the low-temperature heating parts in each area can be reflected by the temperature of the temperature sensors. Moreover, the temperature sensors are arranged on one side far from the side wall of the low-temperature drum, which can avoid the heat exchange of the temperatures in each area through the avoidance grooves in a short time, resulting in inaccurate detection data.

[0026] As a preference of the present invention, a heat preservation cover for covering the slider and the guide seat is further arranged on the low-temperature furnace shell, and the heat preservation cover is detachably connected to the low-temperature furnace shell.

[0027] Through the above technical solution, by arranging the detachable heat preservation cover, the heat in the low-temperature section of the furnace body can be prevented from escaping from the slots on the low-temperature furnace shell.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. By setting a low-temperature furnace body and a high-temperature furnace body, this application can preheat the material at a low temperature and heat it at a high temperature, reduce heat loss, and eliminate the need for frequent temperature adjustment. As a result, the service life of the heating system can be extended. In addition, the height of the feeding end of the low-temperature furnace body is greater than that of the discharging end, creating an inclination between the low-temperature furnace body and the high-temperature furnace body. This allows the material to be discharged by its own weight, effectively saving energy. Moreover, the heating components of the low-temperature furnace body and the high-temperature furnace body are controlled separately in sections, making it convenient to perform individual maintenance and replacement in case of problems and improving the maintenance speed.

[0030] 2. By setting baffle plates in the low-temperature drum or the high-temperature drum, this application can disperse the materials that are stuck together in the low-temperature drum or the high-temperature drum when the drum rotates, facilitating the discharge of the materials and ensuring uniform heating of the materials.

[0031] 3. By setting a nitrogen protection system, this application can continuously supply nitrogen into the low-temperature drum and the high-temperature drum, effectively preventing the oxidation of the materials. At the same time, by supplying nitrogen from the discharging end to the feeding end, the nitrogen can fill the entire low-temperature drum or high-temperature drum.

[0032] 4. By driving the heating seat to move with the moving plate, the movement of the heating seat in the low-temperature drum can be realized. When a certain low-temperature heating part in the low-temperature drum fails, the adjacent low-temperature heating part can be moved and the power of the moved low-temperature heating part can be increased to replace the function of the faulty low-temperature heating part, avoiding the need to disassemble the low-temperature furnace body for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of Embodiment 1 of this application.

[0034] Figure 2 is a schematic structural diagram inside the low-temperature drum of Embodiment 1 of this application.

[0035] Figure 3 is a schematic structural diagram of Embodiment 2 of this application.

[0036] Figure 4 is a schematic structural diagram of the low-temperature section of Embodiment 3 of this application.

[0037] Figure 5 is Figure 4 an enlarged view of Part A of

[0038] DESCRIPTION OF THE REFERENCE NUMERALS:

[0039] 1. Low-temperature furnace body; 2. High-temperature furnace body; 3. Discharge cooling mechanism; 4. Electric screw machine; 5. First aggregate bin; 6. Second aggregate bin; 7. Low-temperature furnace drive mechanism; 8. First automatic nitrogen protection system; 9. Second automatic nitrogen protection system; 10. Baffle plate; 11. High-temperature furnace drive mechanism; 12. Cooling tower; 13. Frame; 14. Partition board; 15. Heat preservation cover; 101. Low-temperature furnace shell; 102. Low-temperature furnace lining; 103. Low-temperature drum; 104. Low-temperature heating part; 201. High-temperature furnace shell; 202. High-temperature furnace lining; 203. High-temperature drum; 204. High-temperature heating part; 31. Cooling kettle; 32. Cooling pipeline; 51. Electric rotary feeding valve; 61. Second electric rotary feeding valve; 71. Low-temperature reduction motor; 72. Low-temperature front drum support wheel; 73. Low-temperature rear drum support wheel; 801. First nitrogen inlet pipe; 901. Second nitrogen inlet pipe; 1011. Groove; 1012. Guide seat; 1041. Heating seat; 1042. Electric heating wire; 1043. Moving plate; 1044. Slide block; 1101. High-temperature reduction motor; 1102. High-temperature front drum support wheel; 1103. High-temperature rear drum support wheel. Detailed implementation mode

[0040] The following combines the attached Figures 1-5 to further elaborate on this application in detail.

[0041] Embodiment 1:

[0042] Referring to Figure 1 and Figure 2 This embodiment discloses a multi-stage continuous drum furnace. In this embodiment, a three-stage continuous drum furnace is adopted, which includes a low-temperature furnace body 1, at least one high-temperature furnace body 2, and a discharge cooling mechanism 3. The low-temperature furnace body 1, the high-temperature furnace body 2, and the discharge cooling mechanism 3 are arranged in sequence along the length direction. The feeding end of the low-temperature furnace body 1 is connected to a set of electric screw machines 4, and the electric screw machines 4 are connected to the material bin for feeding into the low-temperature furnace body 1. The discharging end of the low-temperature furnace body 1 is connected to the feeding end of the high-temperature furnace body 2 through a first aggregate bin 5, and the discharging end of the high-temperature furnace body 2 is connected to the discharge cooling mechanism 3 through a second aggregate bin 6. [[ID=)18]]

[0043] The low-temperature furnace body 1 includes a low-temperature furnace shell 101, a low-temperature furnace lining 102, a low-temperature drum 103, and a low-temperature heating component. The low-temperature furnace shell 101 is made of section steel, and a low-temperature furnace lining 102 is provided on the inner wall of the low-temperature furnace shell 101. In this embodiment, the low-temperature furnace lining 102 uses a folded block of aluminosilicate fiber as the heat preservation layer and is fixed on the low-temperature furnace shell 101 after being compressed with heat-resistant steel rivets. The fiber selects high-temperature-resistant fiber cotton with a maximum heat-resistant coefficient of 1050 °C, and the total thickness of the furnace lining is 300 mm.

[0044] The low-temperature heating assembly is arranged between the low-temperature furnace shell 101 and the low-temperature roller 103. The low-temperature heating assembly includes multiple low-temperature heating parts 104. Each low-temperature heating part 104 is distributed along the length direction of the low-temperature roller 103, and each low-temperature heating part 104 is controlled separately; the heating element of the low-temperature heating assembly adopts a high-temperature resistance belt, which can be used normally under 1050°C working conditions without any abnormality.

[0045] The low-temperature furnace body 1 is connected to a low-temperature furnace drive mechanism 7, which drives the low-temperature furnace body 1 to rotate. The low-temperature furnace drive mechanism 7 comprises a low-temperature reducer 71, a pair of large and small gears, a low-temperature front roller support wheel 72, and a low-temperature rear roller support wheel 73. The low-temperature reducer 71 drives the large and small gears to rotate the low-temperature roller 103. To ensure that the material process is met, a frequency converter is used to regulate the speed of the motor on the low-temperature reducer 71. The motor can be controlled in forward and reverse directions, making speed adjustment convenient, flexible, and reliable, with an adjustable speed of 1 to 5 r / min.

[0046] When the low-temperature furnace body 1 is installed, the installation height of the front end (feed end) of the low-temperature furnace body 1 is greater than the installation height of the rear end (discharge end) of the low-temperature furnace body 1, so that the entire low-temperature furnace body 1 has a 0.5% inclination angle. The inclination enables the material to be discharged by its own weight and accelerates the material to move forward in the low-temperature roller 103 of the low-temperature furnace body 1, thereby effectively saving energy.

[0047] The low-temperature drum 103 is provided with a plurality of baffles 10 distributed along the length of the low-temperature drum 103. Each baffle 10 is distributed radially along the low-temperature drum 103. In this embodiment, 6-10 baffles 10 are provided in the same cross section of the low-temperature drum 103. The baffles 10 are tilted at a certain angle and staggered on the inner wall of the low-temperature drum 103. The baffles 10 are made of the same material as the low-temperature drum 103 and are welded to the inner wall of the low-temperature drum 103. The baffles 10 facilitate stirring of the material and also crush any adhering portions of the material.

[0048] The discharge end of the low-temperature drum 103 is connected to the first collection bin 5. In this embodiment, the first collection bin 5 is constructed of steel plates with a cylindrical upper end and a conical lower end. To prevent material from sintering and causing poor material flow, an electric rotary feed valve 51 is installed at the lower end of the first collection bin 5. This valve effectively crushes large lumps of material while also promoting material flow. The first collection bin 5 is also equipped with an inspection port for internal maintenance and repair.

[0049] At the discharge end of the low-temperature drum 103, a first automatic nitrogen protection system 8 is also provided. The first automatic nitrogen protection system 8 includes a first nitrogen inlet pipe 801. One end of the first nitrogen inlet pipe 801 passes through the first aggregate bin 5 and extends into the low-temperature drum 103, and the other end is connected to a nitrogen gas supply system. Nitrogen gas is introduced into the low-temperature drum 103 through the first nitrogen inlet pipe 801. The first automatic nitrogen protection system 8 also consists of a digital display gas pressure gauge, a manual valve, an electromagnetic valve explosion-proof device, and a safety relief device. In the normal use state, an intake electromagnetic valve in one path is opened to fill nitrogen into the low-temperature drum 103, and the digital display pressure gauge monitors the pressure in real time. Once it is found that the pressure is too high while the pressure in the other path is normal, the first intake electromagnetic valve automatically closes and the second electromagnetic valve automatically opens to continue filling nitrogen, and an audible and visual alarm is issued to prompt the operator to troubleshoot.

[0050] At the feed end of the low-temperature drum 103, an exhaust gas emission system is also provided. The exhaust gas emission system includes an exhaust gas emission pipeline, and a manual valve, an exhaust gas filtering device, an exhaust gas condensation tower, an electric valve, and an induced draft fan are connected to the pipeline. The exhaust gas filtering device is arranged at the exhaust gas outlet and is mainly used for filtering dust in the exhaust gas. Manual valves are respectively provided at the front and rear ends of the exhaust gas filtering device for pipeline switching and cleaning of the filtering device.

[0051] The structure of the high-temperature section furnace body 2 is the same as that of the low-temperature section furnace body 1. The high-temperature section furnace body 2 includes a high-temperature furnace shell 201, a high-temperature furnace lining 202, a high-temperature drum 203, and a high-temperature heating assembly. The high-temperature furnace shell 201 is made of section steel, and a high-temperature furnace lining 202 is arranged on the inner wall of the high-temperature furnace shell 201. In this embodiment, the high-temperature furnace lining 202 uses a folded block of aluminum silicate fiber as a heat-insulating layer and is fixed on the high-temperature furnace shell 201 by compression with heat-resistant steel rivets. The fiber is selected as high-temperature resistant fiber cotton, and the maximum temperature resistance coefficient is 1050 °C. The total thickness of the high-temperature furnace lining 202 is 300 mm.

[0052] The high-temperature heating assembly is arranged between the high-temperature furnace shell 201 and the high-temperature drum 203. The high-temperature heating assembly includes a plurality of high-temperature heating parts 204, and each high-temperature heating part 204 is distributed along the length direction of the high-temperature drum 203, and each high-temperature heating part 204 is independently controlled; the heating element of the high-temperature heating assembly uses a high-temperature resistance belt and can be used normally under the working condition of 1050 °C without any abnormality.

[0053] The high-temperature furnace body 2 is connected to a high-temperature furnace drive mechanism 11, which drives the high-temperature furnace body 2 to rotate. The high-temperature furnace drive mechanism 11 comprises a high-temperature reducer 1101, a pair of large and small gears, a high-temperature front roller support wheel 1102, and a high-temperature rear roller support wheel 1103. The high-temperature reducer 1101 drives the large and small gears to rotate the high-temperature roller 203. To ensure that the material process is met, a frequency converter is used to regulate the speed of the motor on the high-temperature reducer 1101. The motor can be controlled in both forward and reverse directions, making speed adjustment convenient, flexible, and reliable, with an adjustable speed of 1 to 5 r / min.

[0054] When the high-temperature section furnace body 2 is installed, the installation height of the front end (feed end) of the high-temperature section furnace body 2 should be greater than the installation height of the rear end (discharge end) of the high-temperature section furnace body 2, so that the entire high-temperature section furnace body 2 has a 0.5% inclination angle. The inclination enables the material to be discharged by its own weight and accelerates the material to move forward in the high-temperature roller 203 of the high-temperature section furnace body 2, thereby effectively saving energy.

[0055] A plurality of baffles 10 are provided within the high-temperature drum 203, distributed along the length of the drum 203. Each baffle 10 is radially distributed along the drum 103. In this embodiment, 6 to 10 baffles 10 are provided in the same cross-section of the drum 203. The baffles 10 are tilted at a certain angle and staggered along the inner wall of the drum 203. The baffles 10 are made of the same material as the drum 203 and are welded to the inner wall of the drum 203. The baffles 10 facilitate stirring of the material and also crush any adhering portions of the material.

[0056] The feed end of the high-temperature drum 203 is connected to the tapered discharge port at the lower section of the first silo 5, and the discharge end of the high-temperature drum 203 is connected to the second silo 6. In this embodiment, the second silo 6 is constructed of steel plate with a cylindrical upper end and a conical lower end. To prevent material from sintering and causing poor material flow, a second electric rotary feed valve 61 is installed at the lower end of the second silo 6. This valve effectively crushes large lumps of material while also promoting material flow. The second silo 6 is also equipped with an access port for internal maintenance and inspection of the equipment.

[0057] At the discharge end of the high-temperature drum 203, a second automatic nitrogen protection system 9 is also provided. The second automatic nitrogen protection system 9 includes a second nitrogen inlet pipe 901. One end of the second nitrogen inlet pipe 901 passes through the second aggregate bin 6 and extends into the high-temperature drum 203, and the other end is connected to a nitrogen gas supply system. Nitrogen gas is introduced into the high-temperature drum 203 through the second nitrogen inlet pipe 901. The second automatic nitrogen protection system 9 also includes a digital display gas pressure gauge, a manual valve, an electromagnetic valve explosion-proof device, and a safety relief device. In the normal use state, an intake electromagnetic valve in one path is opened to fill nitrogen gas into the high-temperature drum 203, and the digital display pressure gauge monitors the pressure in real time. Once it is found that the pressure is too high while the pressure in the other path is normal, the first intake electromagnetic valve is automatically closed and the second electromagnetic valve is automatically opened to continue filling nitrogen gas, and an audible and visual alarm is issued to prompt the operator to troubleshoot.

[0058] At the feed end of the high-temperature drum 203, an exhaust gas emission system is also provided. The exhaust gas emission system includes an exhaust gas emission pipeline, and a manual valve, an exhaust gas filtering device, an exhaust gas condensation tower, an electric valve, and an induced draft fan are connected to the pipeline. The exhaust gas filtering device is arranged at the exhaust gas outlet and is mainly used for filtering dust in the exhaust gas. Manual valves are respectively provided at the front and rear ends of the exhaust gas filtering device for pipeline switching and cleaning of the filtering device.

[0059] The conical discharge port at the lower end of the second aggregate bin 6 is connected to a discharge cooling mechanism 3. The discharge cooling mechanism includes a cooling kettle 31, and a cooling pipeline 32 is arranged on the cooling kettle 31. The cooling pipeline 32 is connected to the cooling tower 12.

[0060] Embodiment 2:

[0061] Refer to Figure 3 , the rest of this embodiment is the same as that of Embodiment 1. The difference is that in order to reduce the requirements for the workshop during production, in this embodiment, a frame 13 is provided. The frame 13 has a structure with upper and lower layers. In this embodiment, the low-temperature furnace body 1 is installed on the top layer of the frame 13, the high-temperature furnace body 2 is arranged on the middle layer of the frame 13, and the discharge cooling mechanism 3 is installed on the bottom layer of the frame 13.

[0062] Embodiment 3:

[0063] Refer to Figure 4 and Figure 5 , the rest of this embodiment is the same as that of Embodiment 1 or Embodiment 2. The difference is that if a failure occurs in the low-temperature heating part 104 between the low-temperature furnace shell 101 and the low-temperature drum 103, in order to reduce the downtime for maintenance, in this embodiment, the low-temperature heating part 104 is set to the following structure:

[0064] The low-temperature heating part 104 includes a heating base 1041 and a heating wire 1042 arranged on the heating base 1041. The heating base 1041 is of an annular structure. The heating base 1041 is sleeved on the low-temperature roller 103. The heating wire 1042 is annularly distributed on the inner circle of the heating base 1041. A moving plate 1043 is also arranged on the heating base 1041, and the moving plate 1043 is coated with a high-temperature resistant heat insulation material. A slot 1011 distributed along the axial direction of the low-temperature furnace shell 101 is also arranged on the low-temperature furnace shell 101; and a guide seat 1012 is arranged on the low-temperature furnace shell 101 along the direction of the slot 1011. One end of the moving plate 1043 is connected to the heating base 1041, and the other end passes through the slot 1011 on the low-temperature furnace shell 101 and is connected to a slider 1044. The slider 1044 cooperates with the guide seat 1012 arranged on the low-temperature furnace shell 101, and the slider 1044 can slide on the guide seat 1012.

[0065] A plurality of partition plates 14 are also arranged in the low-temperature section furnace body 1. The partition plates 14 are also made of a high-temperature resistant heat insulation material. The partition plates 14 are sleeved on the low-temperature roller 103, and each partition plate 103 is distributed along the axial direction of the low-temperature roller 103. An avoidance groove 141 for the heating base 1041 and the moving plate 1043 of the low-temperature heating part to pass through is also arranged on the partition plate 14. A temperature sensor is arranged in the space between two adjacent partition plates 103. The temperature sensor is arranged at one end far from the side wall of the low-temperature roller 103. By arranging the temperature sensor, when a fault occurs in the low-temperature heating part 104, the operating conditions of the low-temperature heating parts 104 in each area can be reflected through the temperature of the temperature sensor, and the temperature sensor is arranged on one side far from the side wall of the low-temperature roller 103, which can avoid the heat exchange of the temperatures in each area through the avoidance groove 141 in a short time, resulting in inaccurate detection data.

[0066] The low-temperature heating part 104 heats the low-temperature roller 103 through the heating wire 1042 on the heating base 1041. In addition, the heating base 1041 can be driven to move by the moving plate 1043, and the moving plate 1043 is driven to move by the slider 1044 arranged outside the low-temperature furnace shell 101, so that the movement of the heating base 1041 in the low-temperature roller 103 can be realized. When a certain low-temperature heating part 104 in the low-temperature roller 103 fails, the adjacent low-temperature heating part 104 can be moved, and the power of the moved low-temperature heating part 104 can be increased, so as to replace the function of the faulty low-temperature heating part 104; the disassembly and repair of the low-temperature section furnace body 1 are avoided.

[0067] By setting the partition plate 14, the low-temperature section furnace body 1 can be divided into multiple areas for temperature monitoring. In addition, by providing an avoidance groove 141 on the partition plate 14 for the low-temperature heating part and the moving plate to pass through, it is convenient to adjust the positions of the respective low-temperature heating parts 104 after a failure occurs.

[0068] A heat preservation cover 15 for covering the slider 1044 and the guide seat 1042 is further provided on the low-temperature furnace shell 101. The heat preservation cover 15 is detachably connected to the low-temperature furnace shell 101. By providing the detachable heat preservation cover 15, the heat inside the low-temperature section furnace body 1 can be prevented from escaping through the slot 1011 on the low-temperature furnace shell 101.

[0069] Similarly, if a failure occurs in the high-temperature heating part 204 between the high-temperature furnace shell 201 and the high-temperature roller 203, in order to reduce the downtime for maintenance, in this embodiment, the high-temperature heating part 204 is provided with the same structure as the low-temperature heating part 104 in this embodiment.

[0070] The above is the preferred embodiment of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A multi-stage continuous roller furnace, characterized in that: It includes at least one low-temperature furnace body (1), at least one high-temperature furnace body (2) and a discharging and cooling mechanism (3); the discharging end of the low-temperature furnace body (1) is connected to the feeding end of the high-temperature furnace body (2), and the discharging end of the high-temperature furnace body (2) is connected to the discharging and cooling mechanism (3). The low-temperature furnace body (1) is connected to a low-temperature furnace driving mechanism (7), and the low-temperature furnace driving mechanism (7) can drive the low-temperature furnace body (1) to rotate. The feeding end of the low-temperature furnace body (1) is connected to a feeding mechanism, and the discharging end of the low-temperature furnace body (1) is connected to the feeding end of the high-temperature furnace body (2), and the height of the discharging end of the low-temperature furnace body (1) is lower than the height of the feeding end of the low-temperature furnace body (1). The low-temperature furnace body (1) includes a low-temperature furnace shell (101), a low-temperature furnace lining (102), a low-temperature drum (103) and a low-temperature heating assembly. The inner wall of the low-temperature furnace shell (101) is provided with the low-temperature furnace lining (102), and the low-temperature heating assembly is arranged between the low-temperature furnace shell (101) and the low-temperature drum (103). The low-temperature heating assembly includes a plurality of low-temperature heating parts (104), and each low-temperature heating part (104) is distributed along the length direction of the low-temperature drum (103), and each low-temperature heating part (104) is independently controlled. The high-temperature furnace body (2) is connected to a high-temperature furnace driving mechanism (11), and the high-temperature furnace driving mechanism (11) can drive the high-temperature furnace body (2) to rotate. The discharging end of the high-temperature furnace body (2) is connected to the discharging and cooling mechanism (3), and the height of the discharging end of the high-temperature furnace body (2) is lower than the height of the feeding end of the high-temperature furnace body (2). The high-temperature furnace body (2) includes a high-temperature furnace shell (201), a high-temperature furnace lining (202), a high-temperature drum (203) and a high-temperature heating assembly. The inner wall of the high-temperature furnace shell (201) is provided with the high-temperature furnace lining (202), and the high-temperature heating assembly is arranged between the high-temperature furnace shell (201) and the high-temperature drum (203). The high-temperature heating assembly includes a plurality of high-temperature heating parts (204), and each high-temperature heating part (204) is distributed along the length direction of the high-temperature drum (203), and each high-temperature heating part (204) is independently controlled. The low-temperature heating part (104) includes a heating seat (1041) and an electric heating wire (1042) arranged on the heating seat (1041). A moving plate (1043) is also arranged on the heating seat (1041). A slot (1011) distributed along the axial direction of the low-temperature furnace shell (101) is also arranged on the low-temperature furnace shell (101). One end of the moving plate (1043) is connected to the heating seat (1041), and the other end passes through the slot (1011) on the low-temperature furnace shell (101) and is connected to a slider (1044). The slider (1044) is matched with a guide seat (1012) arranged on the low-temperature furnace shell (101), and the slider (1044) can slide on the guide seat (1012).

2. The multi-stage continuous roller furnace according to claim 1, wherein: A plurality of baffle plates (10) distributed along the length direction of the low-temperature drum (103) or the high-temperature drum (203) are provided in both the low-temperature drum (103) and the high-temperature drum (203), and each baffle plate (10) is distributed radially along the low-temperature drum (103) or the high-temperature drum (203).

3. A multi-stage continuous drum furnace according to claim 1, characterized in that: A first aggregate bin (5) is connected to the discharge end of the low-temperature furnace body (1). The upper end of the first aggregate bin (5) is connected to the discharge end of the low-temperature furnace body (1), and the lower end of the first aggregate bin (5) is connected to the feed end of the high-temperature furnace body (2). A second aggregate bin (6) is connected to the discharge end of the high-temperature furnace body (2). The upper end of the second aggregate bin (6) is connected to the discharge end of the high-temperature furnace body (2), and the lower end of the second aggregate bin (6) is connected to the feed end of the discharge cooling mechanism (3).

4. The multi-segment continuous roller furnace according to claim 3, characterized in that: Electric rotary feeding valves are provided at the lower discharge openings of the first aggregate bin (5) and the second aggregate bin (6).

5. The multi-stage continuous roller furnace according to claim 3, wherein: A first automatic nitrogen protection system (8) is provided in the low-temperature drum (103). The first automatic nitrogen protection system (8) is provided at the discharge end of the low-temperature drum (103). The first automatic nitrogen protection system (8) includes a first nitrogen inlet pipe (801). One end of the first nitrogen inlet pipe (801) passes through the first aggregate bin (5) and extends into the low-temperature drum (103), and the other end is connected to a nitrogen supply system. A second automatic nitrogen protection system is provided in the high-temperature drum (203). The second automatic nitrogen protection system (9) is provided at the discharge end of the high-temperature drum (203). The second automatic nitrogen protection system (9) includes a second nitrogen inlet pipe (901). One end of the second nitrogen inlet pipe (901) passes through the second aggregate bin (6) and extends into the high-temperature drum (203), and the other end is connected to the nitrogen supply system.

6. The multi-stage continuous roller furnace according to claim 1, wherein: The low-temperature furnace body (1), the high-temperature furnace body (2), and the discharge cooling mechanism (3) are arranged on a frame (13). The low-temperature furnace body (1) is arranged at the uppermost end of the frame (13), the discharge cooling mechanism (3) is arranged at the lowermost end of the frame (13), and the high-temperature furnace body (2) is arranged between the low-temperature furnace body (1) and the discharge cooling mechanism (3).

7. A multi-stage continuous roller furnace according to claim 1, characterized in that: A plurality of partition plates (14) are further provided in the low-temperature furnace body (1). The partition plates (14) are sleeved on the low-temperature drum (103), and each partition plate (14) is distributed along the axial direction of the low-temperature drum (103). Avoidance grooves (141) for the low-temperature heating part (104) and the moving plate (1043) to pass through are further provided on the partition plates (14).

8. A multi-stage continuous roller furnace according to claim 7, characterized in that: Temperature sensors are arranged in the space between two adjacent partition plates (14), and the temperature sensors are arranged at one end far from the side wall of the low-temperature drum (103).

9. The multi-stage continuous roller furnace according to claim 8, wherein: A heat preservation cover (15) for covering the slider (1044) and the guide seat (1012) is further provided on the low-temperature furnace shell (101), and the heat preservation cover (15) is detachably connected to the low-temperature furnace shell (101).

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