Partition heating bidirectional air guide heat energy recovery intelligent control homogenizing furnace

Abstract

The invention discloses a partition heating bidirectional air guide heat energy recovery intelligent control homogenizing furnace, and relates to the technical field of metal heat treatment. The device comprises a furnace body, and two sets of heating mechanisms are symmetrically arranged in the furnace body; the heating mechanism comprises an axial flow fan arranged in the furnace body, a guide plate is fixedly installed on the inner wall of the furnace body and located below the axial flow fan, and an air inlet pipe is fixedly installed at the top of the furnace body. Additional consumption of fuel is reduced, waste gas emission is reduced, energy cost is remarkably reduced, the natural environment is protected, the stable and efficient heating environment in the furnace can be maintained, the overall heat treatment effect is improved, meanwhile, particulate matter in waste gas can be filtered through the filter cartridge, the interior of the heat exchanger is kept clean, and the service life of the heat exchanger is prolonged. The heat transfer performance is kept in an optimal state, so that the overall heat efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal heat treatment equipment, and in particular to a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace. Background Art

[0002] Aluminum profiles are mainly used for processing and assembling windows on buildings. Their production mainly includes extrusion molding, aging treatment, surface cleaning, lotion drying, surface coating, and coating drying. Aging treatment is a process in which the aluminum profile is heated to a certain temperature with hot air in an aging furnace, and the strength of the aluminum profile is rapidly improved after a period of time.

[0003] In a Chinese patent (application number: CN221544718U), an aluminum profile aging furnace with a layered air guide structure is disclosed, which is characterized by: including an aging furnace body, a feeding trolley, a burner and a fan; a furnace is provided at the bottom end of the interior of the aging furnace body, and a combustion chamber is provided at the top; a lifting door is provided at one end of the furnace, and a positioning block is provided at the bottom of the other end; the feeding trolley is arranged in the furnace, and a plurality of groups of layered air guide channels I are provided at one end of the feeding trolley close to the lifting door, and the other end is in contact with the positioning block; the burner is arranged on one side of the top of the aging furnace body, and is connected to the combustion chamber through a heating pipe; the fan is arranged inside the combustion chamber, and the output end of the fan is connected to the air guide channel II. The utility model evenly blows hot air to the surface of the aluminum profile on each layer of the material rack of the feeding trolley through the cooperation of the layered air guide structure between the aging furnace and the feeding trolley, thereby improving the efficiency of the aging treatment.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] Traditional homogenizing furnaces have many defects. During the heating process, the combustion zone has a large space, a long heating time, high energy costs, and uneven heat distribution; the hot air in the top combustion zone is transported in a one-way cycle by an axial flow fan, and the left and right temperature differences of the processed materials are particularly large (±30°C), which cannot meet the heat treatment process requirements of metal products, resulting in unstable product quality. In terms of heat energy utilization, the efficiency of waste heat recovery from exhaust gas is low, resulting in a large amount of energy being wasted and increased production costs. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace, comprising a furnace body, wherein a heating mechanism is arranged inside the furnace body, and the heating mechanism is symmetrically arranged in two groups;

[0009] The heating mechanism comprises an axial flow fan arranged inside the furnace body, a guide plate is fixedly installed on the inner wall of the furnace body, the guide plate is located below the axial flow fan, an air inlet pipe is fixedly installed on the top of the furnace body, the air inlet pipe extends to below the guide plate through the axial flow fan, a heat exchanger is fixedly installed on the top of the furnace body, a combustion aid is fixedly installed on the top of the furnace body, the combustion aid is located at the corner of the furnace body, and the heat exchanger and the combustion aid are connected through the combustion aid pipe;

[0010] A filter box is fixedly installed on the top of the guide plate, a filter cartridge is fixedly installed inside the filter box, a guide frame is fixedly installed between the inner walls of the filter cartridge, a plurality of guide holes are opened at the bottom of the guide frame, a spiral frame is fixedly installed on the bottom of the guide frame, spiral sheets are fixedly installed between the spiral frames, and a plurality of groups of spiral sheets are annularly arranged, a filter layer is fixedly installed on the bottom of the spiral frame, a transmission pipe is fixedly connected between the top of the guide frame and the heat exchanger, a smoke exhaust pipe is fixedly installed on the inner top of the guide frame, one end of the smoke exhaust pipe is fixedly connected to the guide frame, a temperature sensor is fixedly installed on the inner wall of the guide plate, and two groups of temperature sensors are symmetrically arranged.

[0011] Furthermore, a bottom plate is slidably mounted between the inner walls of the filter cartridge, a threaded rod is fixedly mounted on the inner bottom of the filter cartridge, a sliding rod is fixedly mounted on the inner bottom of the filter cartridge, and the bottom plate is threadedly connected to the threaded rod and slidably connected to the sliding rod respectively.

[0012] Furthermore, a connecting rod is rotatably mounted on one side of the filter box close to the axial flow fan, a windward blade is fixedly mounted on one end of the connecting rod close to the axial flow fan, and the connecting rod penetrates and extends into the interior of the filter cartridge.

[0013] Furthermore, a first bevel gear is fixedly mounted on one end of the connecting rod inside the filter cartridge, and a second bevel gear is fixedly mounted on the top of the threaded rod, and the first bevel gear is meshingly connected with the second bevel gear.

[0014] Furthermore, the upper and lower parts of the threaded rod are provided with a smooth rod layer, the surface of the sliding rod is sleeved with a return spring, one end of the return spring is fixedly connected to the bottom plate, the inner bottom of the filter cylinder is fixedly installed with an expansion plate, and the bottom plate is located above the expansion plate.

[0015] Furthermore, the top of the heat exchanger is fixedly connected to an external air inlet pipe, a side of the filter box close to the axial flow fan is arranged as an inclined surface, and a plurality of guide grooves are provided on the surface of the filter box.

[0016] Furthermore, furnace doors are provided on both sides of the furnace body, and door opening detection modules are provided on surfaces of the furnace doors.

[0017] Furthermore, the interior of the filter box is made of high temperature resistant material.

[0018] Furthermore, the furnace body is configured as a multi-layer wall structure, the inner wall of the furnace body is made of high temperature resistant 304 stainless steel, and the outer wall is composed of multi-layer ceramic fiber composite materials with excellent thermal insulation performance and Q235 material.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention utilizes a heating mechanism to effectively recover waste heat from exhaust gas while greatly improving the combustion efficiency in the furnace, reducing additional fuel consumption and reducing exhaust gas emissions, significantly reducing energy costs and protecting the natural environment, and helping to maintain a stable and efficient heating environment in the furnace, thereby improving the overall heat treatment effect. At the same time, a filter cartridge can be used to filter particulate matter in the exhaust gas, so that the heat exchanger remains clean and the heat transfer performance remains in an optimal state, thereby improving the overall thermal efficiency.

[0021] 2. The present invention utilizes the axial flow fan to intelligently adjust the speed according to the temperature and pressure in the furnace. The fan operating frequency is 20Hz at low temperature and low pressure. When the temperature ranges from room temperature to 400 degrees and the pressure ranges from 0pα to 300pα, the fan operating frequency increases from 20Hz to 50Hz, thereby achieving more flexible and efficient hot air guidance and uniform temperature distribution, and improving the existing single wind speed problem.

[0022] 3. The present invention can adjust the bottom plate inside the filter cartridge through the threaded rod, thereby adjusting the centrifugal distance. As the operating frequency of the axial flow fan increases, the exhaust gas generated will increase. It can adapt to different working conditions according to the flow fluctuation of the exhaust gas, thereby ensuring that the equipment can still operate stably under different loads.

[0023] 4. The present invention utilizes an axial flow fan, which can reduce the temperature of the exhaust gas delivered by the axial flow fan when the high pressure is reached in the furnace and the high temperature of the exhaust gas can reach several hundred degrees. When the axial flow fan delivers the air introduced from the outside to both sides, the air contacts the surface of the filter box. Since the temperature of the exhaust gas is higher than the temperature of the delivered air, the exhaust gas can be cooled at this time. After the temperature of the exhaust gas is reduced, the particles in the gas will condense into larger particles due to the temperature reduction, making it easier for them to adhere to the inner wall of the filter cartridge, and the efficiency and quality of filtration can be maintained while the centrifugal distance is reduced. At the same time, after the exhaust gas is simply cooled, when it is discharged into the heat exchanger, it can prevent the exhaust gas from being too hot, resulting in a large temperature difference between the exhaust gas and the cooling medium, resulting in an uneven heat exchange process, and causing a decrease in heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the interior of the furnace body of the present invention;

[0026] Figure 3 It is a schematic diagram of the axial flow fan of the present invention;

[0027] Figure 4 It is a schematic diagram of the filter box of the present invention;

[0028] Figure 5 It is a schematic diagram of the spiral frame of the present invention;

[0029] Figure 6 It is a schematic diagram of the interior of the filter cartridge of the present invention;

[0030] Figure 7 is a schematic diagram of a guide plate of the present invention;

[0031] Figure 8 The present invention Figure 7 Schematic diagram at point A in the middle.

[0032] Figure numerals: 1. furnace body; 2. heating mechanism; 201. heat exchanger; 202. combustion aid; 203. combustion aid pipe; 3. axial flow fan; 4. guide plate; 5. filter box; 6. filter cartridge; 7. guide frame; 8. guide hole; 9. spiral frame; 10. spiral sheet; 11. filter layer; 12. smoke exhaust pipe; 13. temperature sensor; 14. bottom plate; 15. threaded rod; 16. sliding rod; 17. connecting rod; 18. windward blade; 19. first bevel gear; 20. second bevel gear; 21. bare rod layer; 22. return spring; 23. expansion plate; 24. air inlet pipe; 25. guide groove; 26. furnace door; 27. air inlet pipe. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] A zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace according to a preferred embodiment of the present invention will be described in detail below.

[0035] Embodiment 1, as Figure 1-Figure 8 As shown, it comprises a furnace body 1, a heating mechanism 2 is arranged inside the furnace body 1, and the heating mechanism 2 is symmetrically arranged in two groups;

[0036] The heating mechanism 2 includes an axial flow fan 3 arranged inside the furnace body 1, a guide plate 4 is fixedly installed on the inner wall of the furnace body 1, and the guide plate 4 is located below the axial flow fan 3. An air inlet pipe 27 is fixedly installed on the top of the furnace body 1, and the air inlet pipe 27 extends to below the guide plate 4 through the axial flow fan 3. A heat exchanger 201 is fixedly installed on the top of the furnace body 1, and a combustion aid 202 is fixedly installed on the top of the furnace body 1. The combustion aid 202 is located at the corner of the furnace body 1, and the heat exchanger 201 and the combustion aid 202 are connected through the combustion aid pipe 203;

[0037] A filter box 5 is fixedly installed on the top of the guide plate 4, a filter cartridge 6 is fixedly installed inside the filter box 5, a guide frame 7 is fixedly installed between the inner walls of the filter cartridge 6, a plurality of guide holes 8 are opened at the bottom of the guide frame 7, a spiral frame 9 is fixedly installed at the bottom of the guide frame 7, spiral sheets 10 are fixedly installed between the spiral frames 9, and the spiral sheets 10 are arranged in a ring shape in a plurality of groups, a filter layer 11 is fixedly installed at the bottom of the spiral frame 9, a transmission pipe is fixedly connected between the top of the guide frame 7 and the heat exchanger 201, a smoke exhaust pipe 12 is fixedly installed on the inner top of the guide frame 7, and one end of the smoke exhaust pipe 12 is fixedly connected to the guide frame 7, a temperature sensor 13 is fixedly installed on the inner wall of the guide plate 4, and two groups of the temperature sensors 13 are symmetrically arranged;

[0038] First, the staff places the metal that needs heat treatment in the furnace cavity, and then starts the burner 202 and the heat exchanger 201, and transports the hot air to the furnace body 1 through the air inlet pipe 27 and the axial flow fan 3, and is located above the guide plate 4. The hot air is guided by the guide plate 4 and enters the furnace body 1 from both sides of the guide plate 4. In this process, the burner 202 continuously heats the air at the corner of the furnace body 1 to increase its temperature, thereby heat treating the metal. While the metal is being heat treated, some volatile substances may generate waste gas during the heating process of the metal. When the waste gas is generated, it will rise in the furnace body 1, and then enter the process from the exhaust pipe 12. Inside the filter box 5, the exhaust gas is transported to the guide frame 7 inside the filter box 5 through the smoke exhaust pipe 12. Since a plurality of guide holes 8 are provided at the bottom of the guide frame 7, after the exhaust gas enters the guide frame 7, it is evenly transported to the spiral frame 9 through the guide holes 8. After contacting the spiral sheet 10 inside the spiral frame 9, due to the shape of the spiral sheet 10, after the exhaust gas contacts it, the exhaust gas will be evenly distributed along the spiral surface and rotate rapidly. During the rotation, it will drop to the bottom of the filter cylinder 6. Due to the centrifugal force, heavier impurities such as dust, moisture and oil with large particles will hit the inner wall of the filter cylinder 6 and fall to the bottom thereof, while air with very small particles and lighter particles will pass through the spiral frame 9. The filter layer 11 at the bottom filters and transports it to the heat exchanger 201 through the transmission pipe. The large amount of heat energy carried by the high-temperature exhaust gas in the furnace is fully heat-conducted with the cold air introduced from the outside in the heat exchanger 201, so that the cold air is quickly preheated and recovers 80% of the heat. The temperature of the preheated air is significantly increased, rich in oxygen and has high energy. It is then transported to the combustion aid 202 through the combustion aid pipe 203, and then transported to the furnace body 1 through the combustion aid 202, so as to circulate. Furthermore, the axial flow fan 3 can intelligently adjust the speed according to the temperature and pressure in the furnace. The fan operating frequency is 20Hz at low temperature and pressure, and the temperature ranges from room temperature to 400 degrees and up to 630°C. The pressure ranges from 0pα to 300pα, and the fan operating frequency increases from 20Hz to 50Hz, achieving more flexible and efficient hot air guidance and uniform temperature distribution, improving the existing single wind speed problem, thereby effectively recovering the waste heat of the exhaust gas and greatly improving the combustion efficiency and combustion rate of the furnace by 90%, reducing the additional fuel consumption and reducing exhaust emissions, significantly reducing energy costs and protecting the natural environment, and helping to maintain a stable and efficient heating environment in the furnace, thereby improving the overall heat treatment effect. At the same time, the filter cartridge 6 can be used to filter particulate matter in the exhaust gas, so that the heat exchanger 201 remains clean and the heat transfer performance remains in the best state, thereby improving the overall thermal efficiency.

[0039] Embodiment 2, as Figure 1-Figure 8As shown, a bottom plate 14 is slidably mounted between the inner walls of the filter cartridge 6, a threaded rod 15 is fixedly mounted on the inner bottom of the filter cartridge 6, a sliding rod 16 is fixedly mounted on the inner bottom of the filter cartridge 6, and the bottom plate 14 is threadedly connected to the threaded rod 15 and slidably connected to the sliding rod 16 respectively;

[0040] When the threaded rod 15 rotates, it can drive the bottom plate 14 to move up and down through the threaded rod 15 and the sliding rod 16, so as to adjust the centrifugal distance of the exhaust gas inside the filter cartridge 6, so as to adjust it according to the flow rate of the exhaust gas transmission.

[0041] Embodiment three, as Figure 1-Figure 8 As shown, a connecting rod 17 is rotatably installed on one side of the filter box 5 close to the axial flow fan 3, and a windward blade 18 is fixedly installed on one end of the connecting rod 17 close to the axial flow fan 3. The connecting rod 17 penetrates and extends into the filter cartridge 6, and a first bevel gear 19 is fixedly installed on one end of the connecting rod 17 inside the filter cartridge 6. A second bevel gear 20 is fixedly installed on the top of the threaded rod 15, and the first bevel gear 19 and the second bevel gear 20 are meshed and connected. A polished rod layer 21 is provided at the upper and lower parts of the threaded rod 15, and a return spring 22 is sleeved on the surface of the sliding rod 16, and one end of the return spring 22 is fixedly connected to the bottom plate 14. An expansion plate 23 is fixedly installed on the inner bottom of the filter cartridge 6, and the bottom plate 14 is located above the expansion plate 23.

[0042] Since the axial flow fan 3 can intelligently adjust the speed according to the temperature and pressure in the furnace, the fan operating frequency is 20Hz at low temperature and low pressure, and the fan operating frequency increases from 20Hz to 50Hz at temperatures ranging from room temperature to 400 degrees and up to 630°C, and pressures ranging from 0pα-300pα. Due to the high pressure and high temperature in the furnace, the operating frequency of the axial flow fan 3 increases, and the wind speed it generates will also increase. When the wind becomes stronger, the wind contacts the windward blade 18 during transmission, and the windward blade 18 rotates, driving the connecting rod 17 to rotate. The connecting rod 17 rotates during the rotation process. During the process, the first bevel gear 19 is synchronously driven to rotate. When the first bevel gear 19 rotates, it meshes with the second bevel gear 20, driving the second bevel gear 20 to rotate synchronously, so that the second bevel gear 20 drives the threaded rod 15 to rotate. As the temperature in the furnace increases, the expansion plate 23 expands and contracts, and expands after preheating, thereby lifting the bottom plate 14, so that it is separated from the lower polished rod layer 21, and then meshes with the threaded rod 15, and moves upward under the continuous rotation of the threaded rod 15, while squeezing the reset spring 22, so that the bottom plate 14 moves to the upper polished rod layer 21. And disengage from the threaded rod 15, at this time, the bottom plate 14 is always at the highest point, and the centrifugal distance of the exhaust gas will be reduced. As the operating frequency of the axial flow fan 3 increases, the exhaust gas generated will increase. It can adapt to different working conditions according to the flow fluctuation of the exhaust gas, so as to ensure that the equipment can still operate stably under different loads. At the same time, when the furnace reaches high pressure, the high temperature of the exhaust gas can reach several hundred degrees, which reduces the temperature of the axial flow fan 3. When the axial flow fan 3 transports the air introduced from the outside to both sides, the air contacts the surface of the filter box 5. Due to the exhaust gas The temperature is higher than the delivered air temperature, and the exhaust gas can be cooled at this time. After the temperature of the exhaust gas is reduced, the particulate matter in the gas will condense into larger particles due to the temperature drop, making it easier for them to adhere to the inner wall of the filter cartridge 6. The filtration efficiency and quality can be maintained while the centrifugal distance is reduced. At the same time, after the exhaust gas is simply cooled, when it is discharged into the heat exchanger 201, it can prevent the exhaust gas from having an excessively high temperature, which results in an excessively large temperature difference between the exhaust gas and the cooling medium, resulting in an uneven heat exchange process and a decrease in heat exchange efficiency.

[0043] Embodiment 4, as Figure 1-Figure 4 As shown, the top of the heat exchanger 201 is fixedly connected to an external air inlet pipe 24, the side of the filter box 5 close to the axial flow fan 3 is set as an inclined surface, and a plurality of guide grooves 25 are opened on the surface of the filter box 5;

[0044] The guide groove 25 can guide the external air when it enters the furnace body 1 , so that the filter box 5 can be cooled better.

[0045] Embodiment 5, as Figure 1As shown, furnace doors 26 are provided on both sides of the furnace body 1, and a door opening detection module is provided on the surface of the furnace door 26, and the interior of the filter box 5 is made of high temperature resistant material;

[0046] The door opening detection module can accurately detect the opening state of the furnace door 26 and transmit the signal to the central control unit. When the door is opened, the interlock control module starts the ventilation program first, and the ignition operation is allowed only when the combustible gas concentration is lower than the safety value, such as the volume concentration of natural gas in the air <4% alarm is lifted, generally the combustible range is 5%-15% and the pressure in the furnace is stable, etc., to effectively prevent the occurrence of explosion accidents.

[0047] Embodiment six, as Figure 1 As shown, the furnace body 1 is configured as a multi-layer wall structure, the inner wall of the furnace body 1 is made of high temperature resistant 304 stainless steel, and the outer wall is made of multi-layer ceramic fiber composite material with excellent thermal insulation performance and Q235 material;

[0048] By utilizing the provided materials, the temperature in the furnace body 1 can be well maintained.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace, comprising a furnace body (1), characterized in that: A heating mechanism (2) is arranged inside the furnace body (1), and the heating mechanism (2) is symmetrically arranged in two groups; The heating mechanism (2) comprises an axial flow fan (3) arranged inside the furnace body (1); a guide plate (4) is fixedly installed on the inner wall of the furnace body (1); the guide plate (4) is located below the axial flow fan (3); an air inlet pipe (27) is fixedly installed on the top of the furnace body (1); the air inlet pipe (27) extends to below the guide plate (4) through the axial flow fan (3); a heat exchanger (201) is fixedly installed on the top of the furnace body (1); a combustion aid (202) is fixedly installed on the top of the furnace body (1); the combustion aid (202) is located at a corner of the furnace body (1); and the heat exchanger (201) and the combustion aid (202) are connected via a combustion aid pipe (203); A filter box (5) is fixedly mounted on the top of the guide plate (4), a filter cartridge (6) is fixedly mounted inside the filter box (5), a guide frame (7) is fixedly mounted between the inner walls of the filter cartridge (6), a plurality of guide holes (8) are provided at the bottom of the guide frame (7), a spiral frame (9) is fixedly mounted on the bottom of the guide frame (7), spiral sheets (10) are fixedly mounted between the spiral frames (9), and a plurality of groups of spiral sheets (10) are arranged in an annular shape, a filter layer (11) is fixedly mounted on the bottom of the spiral frame (9), a transmission pipe is fixedly connected between the top of the guide frame (7) and the heat exchanger (201), a smoke exhaust pipe (12) is fixedly mounted on the inner top of the guide frame (7), one end of the smoke exhaust pipe (12) is fixedly connected to the guide frame (7), a temperature sensor (13) is fixedly mounted on the inner wall of the guide plate (4), and two groups of the temperature sensors (13) are symmetrically arranged.

2. According to claim 1, a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace is characterized in that: A bottom plate (14) is slidably mounted between the inner walls of the filter cartridge (6), a threaded rod (15) is fixedly mounted on the inner bottom of the filter cartridge (6), a sliding rod (16) is fixedly mounted on the inner bottom of the filter cartridge (6), and the bottom plate (14) is threadedly connected to the threaded rod (15) and slidably connected to the sliding rod (16) respectively.

3. According to claim 2, a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace is characterized in that: A connecting rod (17) is rotatably mounted on one side of the filter box (5) close to the axial flow fan (3), and a windward blade (18) is fixedly mounted on one end of the connecting rod (17) close to the axial flow fan (3). The connecting rod (17) passes through and extends into the interior of the filter cartridge (6).

4. According to claim 3, a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace is characterized in that: A first bevel gear (19) is fixedly mounted on one end of the connecting rod (17) located inside the filter cartridge (6), and a second bevel gear (20) is fixedly mounted on the top of the threaded rod (15), and the first bevel gear (19) and the second bevel gear (20) are meshingly connected.

5. According to claim 4, a zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace is characterized in that: The upper and lower parts of the threaded rod (15) are provided with a smooth rod layer (21), the surface of the sliding rod (16) is sleeved with a return spring (22), one end of the return spring (22) is fixedly connected to the bottom plate (14), and the inner bottom of the filter cylinder (6) is fixedly installed with an expansion plate (23), and the bottom plate (14) is located above the expansion plate (23).

6. The zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace according to claim 5 is characterized in that: The top of the heat exchanger (201) is fixedly connected to an external air inlet pipe (24); the side of the filter box (5) close to the axial flow fan (3) is arranged as an inclined surface; and a plurality of guide grooves (25) are provided on the surface of the filter box (5).

7. The zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace according to claim 6 is characterized in that: Furnace doors (26) are provided on both sides of the furnace body (1), and a door opening detection module is provided on the surface of the furnace door (26).

8. The zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace according to claim 7 is characterized in that: The interior of the filter box (5) is made of high temperature resistant material.

9. The zoned heating two-way air-conducting heat energy recovery intelligent control homogenizing furnace according to claim 8, characterized in that: The furnace body (1) is configured as a multi-layer wall structure; the inner wall of the furnace body (1) is made of high-temperature resistant 304 stainless steel, and the outer wall is made of multi-layer ceramic fiber composite material with excellent thermal insulation performance and Q235 material.

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