Heating structure and energy-saving mesh belt furnace with heating structure

Abstract

The present invention relates to the technical field of mesh belt furnace heating components, and discloses a heating structure and an energy-saving mesh belt furnace having the heating structure. The present invention detects the number of workpieces entering the heating structure, thereby adjusting the number and spacing of the hoisting heating tubes located inside each hoisting installation frame, and adjusting the number and spacing of the lifting heating tubes located inside each lifting installation frame, thereby adjusting the spacing between two adjacent hoisting heating tubes and the spacing between two adjacent lifting heating tubes. Since each hoisting heating tube located inside the hoisting installation frame can be powered on to output heat, each lifting heating tube located inside the lifting installation frame can be powered on to output heat, thereby adjusting the heating power of the material on the heating surface, and thereby adjusting the heat output power of the heating surface in accordance with the material density of the heating surface, thereby ensuring the heating effect of the material on the heating surface.

Description

Technical Field

[0001] The invention relates to the technical field of mesh belt furnace heating components, in particular to a heating structure and an energy-saving mesh belt furnace having the heating structure. Background Art

[0002] As the most crucial heat output structure within any furnace, the heating structure plays a significant role in various specialized furnaces, particularly mesh-belt furnaces. Mesh-belt furnaces, as continuous heat treatment equipment, are widely used in industries such as metallurgy, ceramics, and powder metallurgy. Their core function is to transport materials via the mesh belt and complete heating, sintering, or annealing within specific temperature zones. Traditional mesh-belt furnaces typically utilize fixed electric heating elements (such as resistance wires and silicon carbon rods) or gas-fired radiant tubes, achieving stepped heat distribution through zoned temperature control.

[0003] In the specific use of mesh-belt furnaces, material density is a key parameter determining the rate of heat transfer: higher density increases the heat capacity per unit volume, and reduced internal porosity leads to a more complex heat transfer path. During the continuous heating process of a mesh-belt furnace, high-density materials require longer thermal penetration to achieve core-surface temperature equilibrium. Low-density materials, due to their high porosity and large specific surface area, tend to dissipate heat rapidly through radiation and convection. The power output of traditional heating structures is based solely on furnace chamber temperature feedback, not the physical properties of the material itself. This makes the system unable to actively compensate for differences in heat demand caused by density changes.

[0004] Among them, the heating structure of existing mesh belt furnaces, when operating in fixed power output mode, is subject to long periods of high or low load, which is not ideal. This accelerates the aging of the heating structure. For example, when processing high-density materials, the heating structure must continuously operate at full power to maintain the furnace temperature, resulting in accelerated oxidation and shortened service life. When processing low-density materials, frequent on-off operation of the heating structure can easily cause thermal stress fatigue, resulting in reduced heating efficiency and adversely affecting energy conservation. Damage to the heating structure can also lead to waste of resources. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a heating structure and an energy-saving mesh belt furnace having the heating structure.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A heating structure comprises a hoisting heating part, a lifting heating part and two side heating parts, wherein the hoisting heating part, the lifting heating part and the two side heating parts together form a heating chamber, and the heating chamber has a heating surface parallel to the hoisting heating part and the lifting heating part respectively, and the distance between the hoisting heating part and the lifting heating part and the heating surface can be adjusted respectively; the hoisting heating part comprises a telescopic hoisting unit, a hoisting mounting frame and two hoisting hidden frames, and the lifting heating part comprises a telescopic lifting unit, a lifting mounting frame and two lifting hidden frames; the hoisting mounting frame and the two hoisting hidden Several lifting heating tubes are slidingly arranged inside the frame, and several lifting heating tubes are slidingly arranged inside the lifting installation frame and the two lifting hidden frames; the distance between two adjacent lifting heating tubes remains equal, and each of the lifting heating tubes located inside the lifting installation frame can be powered on to output heat, and the distance between two adjacent lifting heating tubes remains equal, and each of the lifting heating tubes located inside the lifting installation frame can be powered on to output heat; the distance between two adjacent lifting heating tubes and the distance between two adjacent lifting heating tubes can be shortened as the material density inside the heating chamber increases.

[0008] Preferably, the two hoisting hidden frames are respectively arranged at the top ends of the hoisting installation frame, a hoisting power-on track is arranged inside the hoisting installation frame, and a hoisting power-off track is arranged inside the hoisting hidden frame. The two ends of the hoisting power-on track are respectively connected to the two hoisting power-off tracks; each of the hoisting heating tubes can slide inside the hoisting power-on track and the two hoisting power-off tracks.

[0009] Preferably, the telescopic lifting unit includes a plurality of lifting drive rods and a plurality of lifting limit rods, each of the lifting drive rods and each of the lifting limit rods passes through the lifting installation frame, and the lifting drive rods and the lifting installation frame are threadedly connected; each of the lifting drive rods is provided with a lifting drive motor at one end away from the lifting installation frame, and each of the lifting drive motors can synchronously drive each of the lifting drive rods to rotate and drive the distance between the lifting installation frame and the heating surface to be adjusted.

[0010] Preferably, a lifting spacing adjustment unit is also provided inside the lifting hidden frame, and the lifting spacing adjustment unit includes a driving connecting rod, a spacing driving screw, a spacing reversing connecting rod and a spacing driving motor; one end of the spacing driving screw passes through the driving connecting rod, and the spacing driving screw and the driving connecting rod are threadedly connected, the other end of the spacing driving screw is connected to a turbine vortex between the bottom end of the spacing reversing connecting rod, and the output end of the spacing driving motor is coaxially fixed to the top end of the spacing reversing connecting rod.

[0011] Preferably, the two ends of the two adjacent hoisting heating pipes are elastically connected by hoisting connecting springs, and the two ends of the two hoisting heating pipes located at the outermost ends are elastically connected to the two ends of the adjacent driving connecting rods by hoisting connecting springs; the hoisting heating pipes are embedded in the hoisting power-on track and the hoisting power-off track at both ends and are also provided with power-connecting poles, a power-connecting track is provided inside the hoisting power-on track, and an insulating track is provided inside the hoisting power-off track. When the power-connecting poles of the hoisting heating pipes are in contact with the power-connecting tracks of the hoisting power-on track, the hoisting heating pipes can be energized and generate heat.

[0012] Preferably, the side panel heating part includes several heating zones, each of which can be heated independently; after the hoisting heating part and the lifting heating part respectively adjust the distance between them and the heating surface to determine the area of the heating cavity, the side panel heating part can close each heating zone that is not inside the heating cavity.

[0013] An energy-saving mesh belt furnace with a heating structure uses the above-mentioned heating structure, including: an insulating shell, a circulating feed mesh belt, an atmosphere adjustment mechanism and an end isolation structure. The interior of the insulating shell is provided with several temperature zones in sequence along the material conveying direction of the circulating feed mesh belt, and a heating structure is provided inside each temperature zone. Each heating mechanism can adjust the sintering temperature inside the corresponding temperature zone respectively; the atmosphere adjustment mechanism can adjust the atmosphere environment inside the insulating shell, and the end isolation structures are respectively provided at both ends of the insulating shell. The end isolation structure can block the external atmosphere from entering the interior of the insulating shell, and the end isolation structure can also reduce the speed at which the heat inside the insulating shell escapes to the outside.

[0014] Preferably, the circulating feed mesh belt includes a flexible mesh belt and a circulating drive unit, and the circulating drive unit can drive the flexible mesh belt to move in a circulation and maintain unidirectional movement inside each heating chamber; the circulating drive unit includes several guide shafts, two tensioning shafts and two drive shafts, and a circulating drive motor is provided on one side of the drive shaft, and power is transmitted between the output shaft of the circulating drive motor and the drive shaft.

[0015] Preferably, each of the guide shafts is respectively arranged inside the conveying path of the flexible mesh belt, and a tensioning shaft and a driving shaft are respectively provided on both sides of the insulating shell; each of the guide shafts and the two tensioning shafts can rotate freely, and the driving shaft can only rotate under the power provided by the circulating drive motor; the distance between the tensioning shaft and the driving shaft located on the same side of the insulating shell can be adjusted; each of the guide shafts, the two tensioning shafts and the two driving shafts are connected to the flexible mesh belt through a chain sprocket for transmission.

[0016] Preferably, the atmosphere regulating mechanism includes several regulating fans and several gas storage tanks, and each regulating fan can inject the gas inside each gas storage tank into the interior of the thermal insulation shell respectively; the end isolation structure includes an isolation curtain and an isolation air curtain, and the isolation curtain and the isolation air curtain can cooperate to isolate the thermal insulation shell from the outside world.

[0017] Compared with the prior art, the present invention provides a heating structure and an energy-saving mesh belt furnace having the heating structure, which has the following beneficial effects:

[0018] 1. This heating structure detects the number of workpieces entering the heating structure, thereby adjusting the number and spacing of the hoisting heating tubes located inside each hoisting installation frame, and adjusting the number and spacing of the lifting heating tubes located inside each lifting installation frame, and then being able to adjust according to the spacing between two adjacent hoisting heating tubes and the spacing between two adjacent lifting heating tubes, and since each hoisting heating tube located inside the hoisting installation frame can be powered on to output heat, each lifting heating tube located inside the lifting installation frame can be powered on to output heat, so as to adjust the heating power of the material on the heating surface, and then be able to adjust the heat output power of the heating surface in accordance with the material density of the heating surface, thereby ensuring the heating effect of the material on the heating surface.

[0019] 2. This heating structure can synchronously drive the rotation of each hoisting drive rod through each hoisting drive motor, and can adjust the distance between the hoisting installation frame and the heating surface through the threaded connection between the hoisting drive rod and the hoisting installation frame. Only the hoisting heating tubes located inside the hoisting power track can be energized for heating. Similarly, the lifting heating part can be adjusted to be able to adjust the number of hoisting heating tubes and lifting heating tubes on both sides of the heating surface that are in the energized heating state and the distance between them and the heating surface, so that the heating surface can be heated more effectively, and the heating power of this heating structure can be effectively adjusted according to the density of the material on the heating surface and the required heating temperature, thereby ensuring the heating effect of the material on the heating surface.

[0020] 3. This heating structure drives the spacing reversing connecting rod to rotate through the power output of the spacing driving motor, and drives the driving connecting rod to rotate through the spacing driving screw to drive the driving connecting rod to move along the inside of the lifting power-off track, so as to be able to synchronously adjust the spacing between each lifting heating tube and between the lifting heating tube and the driving connecting rod. When the power connection post of the lifting heating tube abuts against the power connection track of the lifting power track, the lifting heating tube can be energized to generate heat. Similarly, each lifting heating tube located inside the lifting installation frame can be energized to output heat, thereby being able to adjust the number of lifting heating tubes and lifting heating tubes on the heating surface. After the lifting heating part and the lifting heating part respectively adjust the distance between them and the heating surface to determine the area of the heating cavity, the side heating part can close the various heating zones that are not inside the heating cavity, and can more effectively cooperate to ensure the heating effectiveness of the heating surface, thereby improving the heating effect of the material transported by the heating surface.

[0021] 4. This energy-saving mesh belt furnace with a heating structure is equipped with a heating structure inside each temperature zone inside the insulation shell. Each heating mechanism can adjust the sintering temperature inside the corresponding temperature zone respectively, so as to save the energy used by the mesh belt furnace through the effective heat transmission of each heating mechanism. In specific use, the tensioning and conveying of the flexible mesh belt can be ensured by setting each guide shaft and adjusting the position of the tensioning shaft. In the conveying path of the flexible mesh belt, the drive shaft is driven to rotate by the power output by the circulating drive motor, and the flexible mesh belt can be driven to circulate inside and outside the insulation shell to maintain a constant conveying direction of the flexible mesh belt inside the insulation shell. The gas inside each gas tank can be injected into the insulation shell respectively through each regulating fan. The isolation curtain and the isolation air curtain can isolate the insulation shell from the outside world to prevent the heat inside the insulation shell from escaping to the outside, and to prevent excessive output of the sintering atmosphere of the material, thereby ensuring the sintering effect of the material and reducing energy usage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of a heating structure of the present invention;

[0023] Figure 2 This is a second schematic diagram of a three-dimensional structure of a heating structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of a hoisting heating part of a heating structure of the present invention;

[0025] Figure 4 This is a partial structural schematic diagram of a hoisting heating part of a heating structure of the present invention;

[0026] Figure 5This is a second partial structural diagram of a hoisting heating portion of a heating structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of an energy-saving mesh belt furnace with a heating structure according to the present invention;

[0028] Figure 7 This is a schematic diagram of the assembly structure of an energy-saving mesh belt furnace with a heating structure according to the present invention;

[0029] Figure 8 This is one of the partial structural schematic diagrams of a circulating conveying mesh belt of an energy-saving mesh belt furnace with a heating structure according to the present invention;

[0030] Figure 9 This is the second partial structural diagram of an energy-saving mesh belt furnace with a heating structure according to the present invention;

[0031] Figure: 1. Hoisting heating unit; 11. Telescopic hoisting unit; 111. Hoisting drive rod; 112. Hoisting limit rod; 113. Hoisting drive motor; 12. Hoisting mounting frame; 121. Hoisting power rail; 13. Hoisting hidden frame; 131. Hoisting power rail; 14. Hoisting heating pipe; 15. Hoisting spacing adjustment unit; 151. Drive connecting rod; 152. Spacing drive screw; 153. Spacing reversing connecting rod; 154. Spacing drive Motor; 16. Hoisting connection spring; 2. Lifting heating part; 21. Telescopic lifting unit; 22. Lifting installation frame; 23. Lifting hidden frame; 24. Lifting heating pipe; 3. Side heating part; 4. Insulated shell; 5. Circulating feed mesh belt; 51. Flexible mesh belt; 52. Circulating drive unit; 521. Guide shaft; 522. Tensioning shaft; 523. Drive shaft; 524. Circulating drive motor; 6. Atmosphere adjustment mechanism; 7. End isolation structure. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0033] As introduced in the background technology, in order to solve the deficiencies in the prior art and the above technical problems, the present application proposes a heating structure and an energy-saving mesh belt furnace with a heating structure. Example 1

[0034] See also Figure 1-Figure 5A heating structure includes a hoisting heating part 1, a lifting heating part 2 and two side heating parts 3. The hoisting heating part 1, the lifting heating part 2 and the two side heating parts 3 together form a heating chamber. The heating chamber has a heating surface parallel to the hoisting heating part 1 and the lifting heating part 2. The distance between the hoisting heating part 1 and the lifting heating part 2 and the heating surface can be adjusted respectively; the hoisting heating part 1 includes a telescopic hoisting unit 11, a hoisting installation frame 12 and two hoisting hidden frames 13, and the lifting heating part 2 includes a telescopic lifting unit 21, a lifting installation frame 22 and two lifting hidden frames 23; the hoisting installation frame 12 and the two hoisting hidden Several lifting heating tubes 14 are slidingly arranged inside the frame 13, and several lifting heating tubes 24 are slidingly arranged inside the lifting installation frame 22 and the two lifting hidden frames 23; the distance between two adjacent lifting heating tubes 14 remains equal, and each lifting heating tube 14 located inside the lifting installation frame 12 can be powered to output heat, and the distance between two adjacent lifting heating tubes 24 remains equal, and each lifting heating tube 24 located inside the lifting installation frame 22 can be powered to output heat; the distance between two adjacent lifting heating tubes 14 and the distance between two adjacent lifting heating tubes 24 can be shortened as the material density inside the heating chamber increases.

[0035] When in use, a heating chamber is formed by the hoisting heating part 1, the lifting heating part 2 and the two side heating parts 3. The interior of the heating chamber is provided with a heating surface which is parallel to the hoisting heating part 1 and the lifting heating part 2 (the heating surface is generally coplanar with the conveying surface in the tunnel furnace, mesh belt furnace and other furnaces). The heating surface can receive the most uniform heat radiation under the joint heating action of the hoisting heating part 1 and the lifting heating part 2. When in use, a sensor can be set at the front end of the heating structure. The number of workpieces entering the heating structure (the density of the material) can be detected by the setting of the sensor, thereby adjusting the hoisting heating tube 1 located inside each hoisting installation frame 12. 4, and similarly, the number and spacing of the lifting heating tubes 24 located inside each lifting installation frame 22 can be adjusted, so that the spacing between two adjacent lifting heating tubes 14 and the spacing between two adjacent lifting heating tubes 24 can be adjusted according to (the density of the material), and since each lifting heating tube 14 located inside the lifting installation frame 12 can be powered on to output heat, each lifting heating tube 24 located inside the lifting installation frame 22 can be powered on to output heat to adjust the heating power of the material on the heating surface, and then the heat output power of the heating surface can be adjusted in accordance with the material density of the heating surface to ensure the heating effect of the material on the heating surface. Example 2

[0036] See also Figure 1-Figure 5The difference from the above embodiment is that the two hoisting hidden frames 13 are respectively arranged at the top ends of the hoisting installation frame 12, a hoisting power-on rail 121 is arranged inside the hoisting installation frame 12, and a hoisting power-off rail 131 is arranged inside the hoisting hidden frame 13, and the two ends of the hoisting power-on rail 121 are respectively connected to the two hoisting power-off rails 131; each hoisting heating tube 14 can slide inside the hoisting power-on rail 121 and the two hoisting power-off rails 131.

[0037] The telescopic lifting unit 11 includes several lifting drive rods 111 and several lifting limit rods 112. Each lifting drive rod 111 and each lifting limit rod 112 passes through the lifting installation frame 12, and the lifting drive rod 111 is threadedly connected to the lifting installation frame 12; each lifting drive rod 111 is provided with a lifting drive motor 113 at one end away from the lifting installation frame 12, and each lifting drive motor 113 can synchronously drive each lifting drive rod 111 to rotate and drive the distance between the lifting installation frame 12 and the heating surface to be adjusted.

[0038] During use, inside the hoisting heating part 1, through the guiding effect of several hoisting drive rods 111 (in this embodiment, only one hoisting drive rod 111 is provided) and several hoisting limit rods 112 on the hoisting mounting frame 12, each hoisting drive motor 113 can synchronously drive each hoisting drive rod 111 to rotate, so that the distance between the hoisting mounting frame 12 and the heating surface can be adjusted through the threaded connection between the hoisting drive rod 111 and the hoisting mounting frame 12. Similarly, inside the lifting heating part 2, the distance between the lifting mounting frame 22 and the heating surface can be adjusted by driving the telescopic lifting unit 21; and through the connection between the two ends of the hoisting power-on rail 121 and the two hoisting power-off rails 131 respectively. Through the arrangement, each hoisting heating tube 14 can slide inside the hoisting power-on rail 121 and the two hoisting power-off rails 131, so that only the hoisting heating tubes 14 located inside the hoisting power-on rail 121 can be powered on for heating. Similarly, only the lifting heating tubes 24 located inside the lifting mounting frame 22 can be powered on for heating, so that the number of each hoisting heating tube 14 and each lifting heating tube 24 on both sides of the heating surface that are in the power-on heating state and the distance between them and the heating surface can be adjusted respectively, thereby more effectively heating the heating surface, and effectively adjusting the heating power of this heating structure according to the density of the material on the heating surface and the required heating temperature, thereby ensuring the heating effect of the material on the heating surface. Example 3

[0039] See also Figure 1-Figure 5The difference from the above embodiment is that a lifting spacing adjustment unit 15 is further provided inside the lifting hidden frame 13, and the lifting spacing adjustment unit 15 includes a driving connecting rod 151, a spacing driving screw 152, a spacing reversing connecting rod 153 and a spacing driving motor 154; one end of the spacing driving screw 152 passes through the driving connecting rod 151, and the spacing driving screw 152 is threadedly connected to the driving connecting rod 151, and the other end of the spacing driving screw 152 is connected to the bottom end of the spacing reversing connecting rod 153 by a turbine vortex rod, and the output end of the spacing driving motor 154 is coaxially fixed to the top end of the spacing reversing connecting rod 153.

[0040] The two ends of the two adjacent hoisting heating pipes 14 are elastically connected by hoisting connecting springs 16, and the two ends of the two hoisting heating pipes 14 located at the outermost ends are elastically connected to the two ends of the adjacent driving connecting rod 151 by hoisting connecting springs 16; the hoisting heating pipe 14 is embedded in the hoisting power-on track 121 and the hoisting power-off track 131, and power-connecting poles are also provided at both ends. The hoisting power-on track 121 is equipped with a power-connecting track, and the hoisting power-off track 131 is equipped with an insulating track. When the power-connecting pole of the hoisting heating pipe 14 is in contact with the power-connecting track of the hoisting power-on track 121, the hoisting heating pipe 14 can be energized to generate heat.

[0041] The side heating part 3 includes several heating zones, each of which can be heated independently; after the hoisting heating part 1 and the lifting heating part 2 adjust the distance between them and the heating surface and determine the area of the heating cavity, the side heating part 3 can close each heating zone that is not inside the heating cavity.

[0042] During specific use, the maximum spring stretching length of the hoisting connection spring 16 is less than the elastic limit of the hoisting connection spring 16, and during specific use, a protective tube (such as a metal bellows, etc.) can be sleeved on the outside of the hoisting connection spring 16 to limit the bending direction of the hoisting connection spring 16 while protecting the hoisting connection spring 16.

[0043] When in use, the power output of the spacing drive motor 154 drives the spacing reversing connecting rod 153 to rotate, and the spacing drive screw 152 is connected to the spacing reversing connecting rod 153 through the turbine vortex rod connection to drive the spacing drive screw 152 to rotate, and the threaded connection between the spacing drive screw 152 and the driving connecting rod 151 is used to drive the driving connecting rod 151 to move along the inside of the lifting power-off track 131, and then the elastic connection between the driving connecting rod 151 and the nearby lifting heating pipe 14 is achieved through the lifting connecting spring 16, and the same lifting connecting springs 16 between each lifting heating pipe 14 can be used to synchronously adjust the lifting heating pipes 14 and the lifting heating pipe 14 and the driving connecting rod. 151, and due to the setting of the power connection post of the hoisting heating tube 14, when the power connection post of the hoisting heating tube 14 is in contact with the power connection track of the hoisting power track 121, the hoisting heating tube 14 can be energized to generate heat. Similarly, each lifting heating tube 24 located inside the lifting installation frame 22 can be energized to output heat, and then the number of hoisting heating tubes 14 and lifting heating tubes 24 on the heating surface can be adjusted. After the hoisting heating part 1 and the lifting heating part 2 are respectively adjusted to the distance between the heating surface and the area of the heating cavity is determined, the side heating part 3 can close the various heating partitions that are not inside the heating cavity, and can more effectively cooperate to ensure the heating effectiveness of the heating surface and improve the heating effect of the material transported by the heating surface. Example 4

[0044] See also Figures 1-9 , an energy-saving mesh belt furnace with a heating structure, using the heating structure as described in any one of Examples 1 to 3, and also including: an insulating shell 4, a circulating feed mesh belt 5, an atmosphere adjustment mechanism 6 and an end isolation structure 7. The inside of the insulating shell 4 is provided with several temperature zones in sequence along the material conveying direction of the circulating feed mesh belt 5, and a heating structure is provided inside each temperature zone. Each heating mechanism can adjust the sintering temperature inside the corresponding temperature zone; the atmosphere adjustment mechanism 6 can adjust the atmosphere environment inside the insulating shell 4, and the end isolation structures 7 are respectively provided at both ends of the insulating shell 4. The end isolation structure 7 can block the external atmosphere from entering the interior of the insulating shell 4, and the end isolation structure 7 can also reduce the speed at which the heat inside the insulating shell 4 escapes to the outside.

[0045] The circulating feed mesh belt 5 includes a flexible mesh belt 51 and a circulating drive unit 52. The circulating drive unit 52 can drive the flexible mesh belt 51 to move in a circulation and maintain unidirectional movement inside each heating chamber; the circulating drive unit 52 includes several guide shafts 521, two tensioning shafts 522 and two drive shafts 523. A circulating drive motor 524 is provided on one side of the drive shaft 523, and power is transmitted between the output shaft of the circulating drive motor 524 and the drive shaft 523.

[0046] Each guide shaft 521 is respectively arranged inside the conveying path of the flexible mesh belt 51, and a tensioning shaft 522 and a driving shaft 523 are respectively arranged on both sides of the insulation shell 4; each guide shaft 521 and the two tensioning shafts 522 can rotate freely, and the driving shaft 523 can only rotate under the power provided by the circulating drive motor 524; the distance between the tensioning shaft 522 and the driving shaft 523 located on the same side of the insulation shell 4 can be adjusted; each guide shaft 521, the two tensioning shafts 522 and the two driving shafts 523 are connected to the flexible mesh belt 51 through a chain sprocket for transmission.

[0047] The atmosphere regulating mechanism 6 includes several regulating fans and several gas storage tanks, through which the gas inside each gas storage tank can be injected into the interior of the thermal insulation shell 4; the end isolation structure 7 includes an isolation curtain and an isolation air curtain, which can cooperate to isolate the thermal insulation shell 4 from the outside world.

[0048] During use, a heating structure is provided inside each temperature zone inside the heat-insulating shell 4, and each heating mechanism can adjust the sintering temperature inside the corresponding temperature zone respectively, so that the effective heat transmission through each heating mechanism can save the energy used by the mesh belt furnace. During specific use, the tensioning and conveying of the flexible mesh belt 51 can be ensured by setting each guide shaft 521 and adjusting the position of the tensioning shaft 522. Inside the conveying path of the flexible mesh belt 51, the power output by the circulating drive motor 524 drives the drive shaft 523 to rotate, and can drive the flexible mesh belt 51 to circulate inside and outside the heat-insulating shell 4, so that the flexible mesh belt 51 can maintain a constant conveying direction inside the heat-insulating shell 4, and through each regulating fan, the gas inside each gas tank can be injected into the heat-insulating shell 4 respectively. The isolation curtain and the isolation air curtain can cooperate to isolate the heat-insulating shell 4 from the outside, so as to prevent the heat inside the heat-insulating shell 4 from escaping to the outside, and to prevent excessive output of the sintering atmosphere of the material, thereby ensuring the sintering effect of the material and reducing energy usage.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A heating structure comprising a hoisting heating unit, a lifting heating unit, and two side heating units, wherein the hoisting heating unit, the lifting heating unit, and the two side heating units together form a heating chamber, characterized in that: The heating chamber has a heating surface parallel to both the hoisting heating portion and the lifting heating portion, and the distances between the hoisting heating portion and the lifting heating portion and the heating surface can be adjusted respectively; The hoisting heating part includes a telescopic hoisting unit, a hoisting installation frame and two hoisting hidden frames, and the lifting heating part includes a telescopic lifting unit, a lifting installation frame and two lifting hidden frames; A plurality of lifting heating pipes are slidably provided inside the said hanging installation frame and the two said hanging hidden frames, and a plurality of lifting heating pipes are slidably provided inside the said lifting installation frame and the two said lifting hidden frames; The spacing between two adjacent hoisting heating pipes remains equal, and the spacing between two adjacent lifting heating pipes remains equal; The interior of the hoisting hidden frame is further provided with a hoisting spacing adjustment unit, and the hoisting spacing adjustment unit includes a driving connecting rod, a spacing driving screw, a spacing reversing connecting rod and a spacing driving motor; One end of the pitch driving screw passes through the driving connecting rod, and the pitch driving screw is threadedly connected to the driving connecting rod, the other end of the pitch driving screw is connected to the turbine worm between the bottom end of the pitch reversing connecting rod, and the output end of the pitch driving motor is coaxially fixed to the top end of the pitch reversing connecting rod; The spacing between two adjacent hoisting heating tubes and the spacing between two adjacent lifting heating tubes can be shortened as the density of the material inside the heating chamber increases; The two hoisting hidden frames are respectively arranged at the two ends of the top of the hoisting installation frame, a hoisting power-on track is arranged inside the hoisting installation frame, and a hoisting power-off track is arranged inside the hoisting hidden frame, and the two ends of the hoisting power-on track are respectively connected to the two hoisting power-off tracks; Each of the hoisting heating pipes can slide inside the hoisting power-on rail and the two hoisting power-off rails; Each of the hoisting heating pipes located inside the hoisting installation frame can be powered on to output heat, and each of the lifting heating pipes located inside the lifting installation frame can be powered on to output heat; The two ends of the adjacent two hanging heating pipes are elastically connected by hanging connection springs, and the two ends of the two hanging heating pipes at the outermost ends are elastically connected to the two ends of the adjacent driving connecting rods by hanging connection springs; The hoisting heating pipe is embedded in the hoisting power-on track and is also provided with power connection poles at both ends of the hoisting power-off track. A power connection track is provided inside the hoisting power-on track, and an insulating track is provided inside the hoisting power-off track. When the power connection pole of the hoisting heating pipe is in contact with the power connection track of the hoisting power-on track, the hoisting heating pipe can be energized and generate heat.

2. A heating structure according to claim 1, characterized in that: The telescopic hoisting unit includes a plurality of hoisting drive rods and a plurality of hoisting limit rods, each of the hoisting drive rods and each of the hoisting limit rods passes through the hoisting installation frame, and the hoisting drive rods are threadedly connected to the hoisting installation frame; Each of the hoisting drive rods is provided with a hoisting drive motor at one end away from the hoisting installation frame. Each of the hoisting drive motors can synchronously drive each of the hoisting drive rods to rotate and adjust the distance between the hoisting installation frame and the heating surface.

3. A heating structure according to claim 1, characterized in that: The side heating portion includes a plurality of heating zones, each of which can be heated independently; After the hoisting heating unit and the lifting heating unit respectively adjust the distance between themselves and the heating surface to determine the area of the heating cavity, the side heating unit can close each heating partition that is not inside the heating cavity.

4. An energy-saving mesh belt furnace with a heating structure, using the heating structure according to any one of claims 1 to 3, characterized in that: include: A heat-insulating shell, a circulating conveyor mesh belt, an atmosphere adjustment mechanism, and an end isolation structure. The heat-insulating shell is provided with several temperature zones in sequence along the material conveying direction of the circulating conveyor mesh belt. Each temperature zone is provided with a heating structure. Each heating mechanism can adjust the sintering temperature of each corresponding temperature zone. The atmosphere adjustment mechanism can adjust the atmosphere environment inside the insulating shell. The end isolation structures are respectively arranged at both ends of the insulating shell. The end isolation structures can prevent the external atmosphere from entering the interior of the insulating shell. The end isolation structures can also reduce the speed at which heat inside the insulating shell dissipates to the outside.

5. The energy-saving mesh belt furnace with a heating structure according to claim 4, characterized in that: The circulating conveying mesh belt includes a flexible mesh belt and a circulating driving unit, and the circulating driving unit can drive the flexible mesh belt to move in a circular motion and maintain unidirectional movement inside each heating chamber; The circulating drive unit includes several guide shafts, two tensioning shafts and two driving shafts. A circulating drive motor is provided on one side of each driving shaft. Power is transmitted between the output shaft of the circulating drive motor and the driving shaft.

6. The energy-saving mesh belt furnace with a heating structure according to claim 5, characterized in that: Each of the guide shafts is respectively arranged inside the conveying path of the flexible mesh belt, and a tensioning shaft and a driving shaft are respectively arranged on both sides of the heat-insulating shell; Each of the guide shafts and the two tensioning shafts can rotate freely, and the drive shaft can only rotate under the power provided by the circulating drive motor; The distance between the tensioning shaft and the driving shaft located on the same side of the heat-insulating housing can be adjusted; Each of the guide shafts, the two tensioning shafts and the two driving shafts is connected to the flexible mesh belt through chains and sprockets for transmission.

7. The energy-saving mesh belt furnace with a heating structure according to claim 4, characterized in that: The atmosphere adjustment mechanism includes a plurality of adjustment fans and a plurality of gas storage tanks, and the gas inside each gas storage tank can be injected into the interior of the heat-insulating shell through each adjustment fan; The end isolation structure includes an isolation curtain and an isolation air curtain, and the isolation curtain and the isolation air curtain cooperate to isolate the heat-insulating shell from the outside world.

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