Tensioning device and mesh belt furnace

Abstract

The utility model provides a tensioning device and a mesh belt furnace, relates to the technical field of mesh belt furnaces, and solves the technical problem of mesh belt shaking. The tensioning device comprises a fixing support, an adjusting support, two first bearing seats, a first supporting shaft, a first fixing piece, a first connecting rod, a first elastic piece, a first tensioning roller and a transmission roller. Wherein the mesh belt penetrates through the space between the first tensioning roller and the transmission roller and is in contact with the surfaces of the first tensioning roller and the transmission roller. By means of the structure, repeated debugging is not needed, the tightening degree of the mesh belt can be dynamically adjusted in real time, the friction force between the mesh belt and the transmission roller is adjusted, namely, the driving force of the mesh belt is adjusted, the mesh belt installation efficiency is improved, the tightening degree of the mesh belt can be dynamically adjusted in real time according to the mesh belt shaking situation in the mesh belt conveying process, and the mesh belt conveying efficiency is improved. Therefore, the conveying efficiency of the mesh belt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mesh belt furnaces, in particular to a tensioning device and a mesh belt furnace. Background Art

[0002] Mesh belt furnace is a kind of equipment that uses mesh belt as a conveying carrier to move the workpiece continuously or intermittently in the furnace for heat treatment. The mesh belt furnace is mainly composed of four parts: furnace body, mesh belt transmission system, temperature control system, and atmosphere control system. When installing the mesh belt, the friction between the mesh belt and the roller driving the mesh belt is difficult to control accurately. Repeated debugging is required to make the friction moderate, and there is a problem of slow efficiency in mesh belt installation.

[0003] When the mesh belt furnace is in use, the mesh belt will shake over time. The shaking is caused by many factors. For example, there are chain links in the mesh belt. When it moves, the static friction and dynamic friction between the mesh belt and the transport plane are constantly switching. Since the static friction is greater than the dynamic friction, and the mesh belt is too long and there is a small gap between the chain links, the sudden change in force will cause the mesh belt to get stuck, that is, shake. For example, the different rigidities of multiple sections of the mesh belt furnace fixed bracket lead to different states of supporting the mesh belt. When the mesh belt moves, the local support rigidity is insufficient, resulting in shaking. For example, when the mesh belt passes through a transport plane composed of multiple platforms and there are steps at the platform docking position, the chain links get stuck, which can also cause shaking. The shaking will occupy part of the driving energy, thereby reducing the mesh belt transportation efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the present application is proposed. The embodiment of the present application provides a tensioning device and a mesh belt furnace.

[0005] In a first aspect, an embodiment of the present application provides a tensioning device configured to tension a mesh belt, wherein the tensioning device includes: a fixed bracket; an adjusting bracket, wherein the first support portion of the adjusting bracket has a first mounting hole; two first bearing seats connected to the fixed bracket; a first support shaft passing through the first mounting hole, wherein the first end of the first support shaft is rotatably connected to a first bearing seat, and the second end of the first support shaft is rotatably connected to another first bearing seat; a first fixing member fixedly connected to the fixed bracket, wherein the first fixing member has a first through hole; a first connecting rod, wherein the first end of the first connecting rod passes through the first through hole and is connected to the second support portion of the adjusting bracket; a first elastic member sleeved on the first connecting rod, wherein the first end of the first elastic member is connected to the second end of the first connecting rod, and the second end of the first elastic member is connected to the first fixing member; a first tensioning roller rotatably connected to the third support portion of the adjusting bracket, and configured to tension the mesh belt; a transmission roller rotatably connected to the fixed bracket and adjacent to the first tensioning roller, and configured to drive the mesh belt; wherein the mesh belt passes between the first tensioning roller and the transmission roller, and contacts the surfaces of the first tensioning roller and the transmission roller.

[0006] In some embodiments, the number of the adjustment bracket, the first fixing member, the first connecting rod and the first elastic member are all two; wherein, the first end of the first tensioning roller is rotatably connected to the third support portion of an adjustment bracket, and the second end of the first tensioning roller is rotatably connected to the third support portion of another adjustment bracket; the first end of a first connecting rod passes through a first through hole of a first fixing member and is connected to the second support portion of an adjustment bracket, and the first end of another first connecting rod passes through a first through hole of another first fixing member and is connected to the second support portion of another adjustment bracket; a first elastic member is sleeved on a first connecting rod, the first end of a first elastic member is connected to the second end of a first connecting rod, the second end of a first elastic member is connected to a first fixing member, another first elastic member is sleeved on another first connecting rod, the first end of another first elastic member is connected to the second end of another first connecting rod, and the second end of another first elastic member is connected to another first fixing member.

[0007] In some embodiments, the first support portion is located at the first end of the adjustment bracket, the second support portion is located at the second end of the adjustment bracket, and the third support portion is located in the middle of the adjustment bracket, wherein the middle of the adjustment bracket is located between the first end of the adjustment bracket and the second end of the adjustment bracket.

[0008] In some embodiments, the first elastic member includes: a spring, which is sleeved on the first connecting rod; two spring fixing blocks, which are sleeved on the first connecting rod, one spring fixing block is connected to the first end of the spring, and the other spring fixing block is connected to the second end of the spring; a fixing nut, which is threadedly connected to the second end of the first connecting rod; wherein, one spring fixing block is connected to the first fixing member, and the other spring fixing block is in contact with the fixing nut on the side away from the spring.

[0009] In some embodiments, the first support portion is located in the middle of the adjustment bracket, the second support portion is located at the first end of the adjustment bracket, and the third support portion is located at the second end of the adjustment bracket, wherein the middle of the adjustment bracket is located between the first end of the adjustment bracket and the second end of the adjustment bracket.

[0010] In some embodiments, the tensioning device also includes: a sliding bracket having a slide groove, the extension direction of the slide groove is at an angle to the horizontal direction; a gravity roller, the end of the gravity roller is inserted into the slide groove, the gravity roller contacts the upper surface of the mesh belt, is configured to tension the mesh belt, and can slide along the extension direction of the slide groove.

[0011] In some embodiments, the fixed bracket has a track and a second through hole, and the extension direction of the track is the same as the extension direction of the second through hole; wherein the tensioning device also includes: a first nut, connected to the fixed bracket; a third bearing seat, slidably connected to the track and having a third through hole; a second nut, connected to the third bearing seat; an adjusting bolt, the first end of the adjusting bolt passes through the third through hole and is threadedly connected to the second nut, and the second end of the adjusting bolt passes through the second through hole and is threadedly connected to the first nut; a balancing roller, rotatably connected to the third bearing seat, the balancing roller contacts the surface of the mesh belt, and is configured to correct the deflection of the mesh belt.

[0012] In some embodiments, the tensioning device includes: two groups of mesh belt balancing adjustment components, which are respectively arranged on both sides of the fixed bracket, and one mesh belt balancing adjustment component includes a first nut, a third bearing seat, a second nut and an adjusting bolt; wherein the first end of the balancing roller is rotatably connected to the third bearing seat in one group of mesh belt balancing adjustment components, and the second end of the balancing roller is rotatably connected to the third bearing seat in the other group of mesh belt balancing adjustment components.

[0013] In some embodiments, the fixed bracket has a first threaded hole, and the tensioning device also includes: a fourth bearing seat, connected to the fixed bracket, the fourth bearing seat has a first waist-shaped hole; a first adjusting screw, the first adjusting screw passes through the first waist-shaped hole and is threadedly connected to the first threaded hole; a second tensioning roller, rotatably connected to the fourth bearing seat, the second tensioning roller contacts the surface of the mesh belt and is configured to tension the mesh belt; wherein the gravity roller is arranged between the first tensioning roller and the second tensioning roller, the mesh belt contacts the upper surfaces of the first tensioning roller and the second tensioning roller, and the mesh belt contacts the lower surface of the gravity roller.

[0014] In some embodiments, the fixed bracket has a second threaded hole, and the tensioning device also includes: a first sprocket, configured to provide driving force; a second sprocket, connected to the transmission roller, configured to transmit driving force; a chain, sleeved on the first sprocket and the second sprocket, and meshed with the first sprocket and the second sprocket; a fifth bearing seat, connected to the fixed bracket, the fifth bearing seat has a second waist-shaped hole; a second adjusting screw, the second adjusting screw passes through the second waist-shaped hole and is threaded with the second threaded hole; a tensioning shaft, the tensioning shaft is inserted into the fifth bearing seat, and is rotatably connected to the fifth bearing seat; a tensioning sprocket, sleeved on the tensioning shaft, meshed with the chain, and configured to tension the chain.

[0015] In a second aspect, an embodiment of the present application provides a mesh belt furnace, comprising: a mesh belt; a transmission device configured to drive the mesh belt to move; and any tensioning device described in the first aspect above, configured to tension the mesh belt.

[0016] In some embodiments, it also includes: a furnace chamber, including multiple heating areas; a first furnace core, arranged in the heating area, the first furnace core has a reaction chamber, and the mesh belt passes through the reaction chamber; multiple heating rods, respectively arranged in the multiple heating areas, configured to heat the first furnace core; a heating controller, which is communicated with the heating rods in the multiple heating areas and is configured to control the power of the heating rods in the multiple heating areas respectively.

[0017] In some embodiments, it also includes: a second furnace core, the second furnace core has a cooling cavity, the reaction cavity is connected to the cooling cavity, and the mesh belt passes through the cooling cavity; a cooling cylinder, the cooling cylinder is sleeved on at least a portion of the second furnace core, a cavity is formed in the cooling cylinder, the cooling cylinder has an air inlet and an air outlet connected to the cavity, the air inlet is configured to pass a cooling medium into the cavity, and the air outlet is configured to discharge the cooling medium in the cavity.

[0018] In some embodiments, the method further includes: a pipeline, wherein a first end of the pipeline is connected to the reaction chamber, and a second end of the pipeline is connected to the gas outlet.

[0019] In some embodiments, it also includes: a plurality of air inlet pipes, which are respectively connected to the reaction chamber, the cavity, and the cooling chamber, and are configured to introduce gas into the reaction chamber, the cavity, and the cooling chamber; a plurality of detection tubes, wherein the first ends of the plurality of detection tubes are respectively connected to the reaction chamber and the cooling chamber; and an oxygen analyzer, which is connected to the second ends of the plurality of detection tubes and is configured to detect the reaction chamber and the cooling chamber.

[0020] The tensioning device and mesh belt furnace proposed in the embodiments of the present application, since the distance between the first tensioning roller and the transmission roller will affect the contact area between the mesh belt and the first tensioning roller, and the contact area between the mesh belt and the transmission roller, and the contact area between the mesh belt and the transmission roller will affect the friction between the mesh belt and the transmission roller, the friction between the mesh belt and the transmission roller will be converted into the driving force of the mesh belt. If the distance between the first tensioning roller and the transmission roller is too small, the mesh belt in the middle will be stuck and cannot be transported. If the distance between the first tensioning roller and the transmission roller is too large, the friction with the mesh belt in the middle will be too small and cannot be transported.

[0021] Through this structure, first, when the mesh belt is installed, if the distance between the first tensioning roller and the driving roller is too small, the middle mesh belt will be stuck, which will make the mesh belt difficult to transport. At this time, the first connecting rod can be manually controlled to move in the direction away from the driving roller, so that the first connecting rod will drive the adjusting bracket and the first tensioning roller away from the driving roller, thereby increasing the distance between the first tensioning roller and the driving roller. Then the first connecting rod is fixed to the first fixing member through the first elastic member to ensure that the distance between the first tensioning roller and the driving roller is appropriate to avoid the mesh belt in the middle being stuck. Second, when the mesh belt shakes while transporting materials, the mesh belt drives the first tensioning roller and the adjusting bracket to move away from the driving roller. The frame and the first connecting rod move, and the movement of the first connecting rod causes the first elastic member to generate a deformation force, which in turn reacts on the first connecting rod, thereby limiting the movable stroke of the first connecting rod, the adjustment bracket and the first tensioning roller, and ensuring that the friction between the mesh belt and the first tensioning roller, as well as between the mesh belt and the transmission roller is sufficient; thirdly, if there are obstacles such as product debris above the mesh belt and between the first tensioning roller and the transmission roller, the obstacle will push the first tensioning roller away from the transmission roller due to its own gravity, and the distance between the first tensioning roller and the transmission roller will increase to accommodate the obstacle to pass through, thereby preventing the obstacle from being stuck between the mesh belt and the transmission roller and damaging the transmission roller.

[0022] In summary, through this structure, the tension of the mesh belt can be adjusted dynamically in real time without repeated debugging, and the friction between the mesh belt and the transmission roller can be adjusted, that is, the driving force of the mesh belt can be adjusted, which not only improves the installation efficiency of the mesh belt, but also can adjust the tension of the mesh belt dynamically in real time according to the shaking situation of the mesh belt during the mesh belt transportation process, thereby improving the transportation efficiency of the mesh belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0024] Figure 1 Shown is a schematic structural diagram of a mesh belt furnace provided by an exemplary embodiment of the present application.

[0025] Figure 2 An exemplary embodiment of the present application is shown. Figure 1 A partial enlarged view of area A in FIG.

[0026] Figure 3 An exemplary embodiment of the present application is shown. Figure 2 A partial enlarged view of area B in the middle.

[0027] Figure 4 Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application.

[0028] Figure 5 An exemplary embodiment of the present application is shown. Figure 4 A partial enlarged view of area C in the middle.

[0029] Figure 6 An exemplary embodiment of the present application is shown. Figure 5 Cross-sectional view taken along the LL direction.

[0030] Figure 7a An exemplary embodiment of the present application is shown. Figure 4 A partial enlarged view of area D in the middle.

[0031] Figure 7b Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application.

[0032] Figure 7c An exemplary embodiment of the present application is shown. Figure 7b A partial enlarged view of area O in the middle.

[0033] Figure 7d An exemplary embodiment of the present application is shown. Figure 7b A partial enlarged view of the middle area R.

[0034] Figure 8 Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application.

[0035] Fig. 9 An exemplary embodiment of the present application is shown. Figure 8 A partial enlarged view of area E in the middle.

[0036] Fig.10 Shown is a schematic structural diagram of a heating area provided by an exemplary embodiment of the present application.

[0037] Fig.11 Shown is a top view of a heating area provided by an exemplary embodiment of the present application.

[0038] Fig.12a An exemplary embodiment of the present application is shown. Figure 8 Cross-sectional view taken along the NN direction.

[0039] Figure 12b Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application.

[0040] Fig.12c An exemplary embodiment of the present application is shown. Figure 12bA partial enlarged view of the middle area P.

[0041] Fig.12d An exemplary embodiment of the present application is shown. Figure 12b A partial enlarged view of the middle area Q.

[0042] Fig.13 An exemplary embodiment of the present application is shown. Figure 4 A partial cross-sectional view of the middle area H taken along the MM direction.

[0043] Fig.14 Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application.

[0044] Fig.15 An exemplary embodiment of the present application is shown. Fig.14 A partial enlarged view of area I in the middle.

[0045] Reference numerals:

[0046] 100, tensioning device; 101, fixing bracket; 1011, track; 1012, second through hole; 102, adjusting bracket; 103, first fixing member; 104, first connecting rod; 105, first elastic member; 1051, spring; 1052, spring fixing block; 1053, fixing nut; 106, first tensioning roller; 107, sliding bracket; 108, gravity roller; 1081, gravity roller shaft; 1082, bearing; 109, third bearing seat; 1091, third through hole; 110, adjusting bolt; 111, balancing roller; 112, fourth bearing seat; 1121, first waist hole; 113, second tensioning roller; 114, first sprocket; 115, second sprocket; 116, chain; 117, transmission Moving roller; 118, fifth bearing seat; 119, tensioning shaft; 120, tensioning sprocket; 121, guide block; 122, first bearing seat; 123, second bearing seat; 124, first support shaft; 200, mesh belt; 300, mesh belt furnace; 301, transmission device; 3011, motor; 302, furnace; 303, first furnace; 304, heating rod; 3041, ceramic rod; 3042, heating wire; 3043, ceramic block; 305, thermocouple; 306, second furnace; 307, cooling cylinder; 3071, air inlet; 3072, air outlet; 308, fan; 309, air inlet pipe; 310, oxygen analyzer; 311, gas flow meter; 312, waste box; 313, protection tube; 314, frame. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] Application Overview

[0049] Mesh belt furnace is a kind of equipment that uses mesh belt as a conveying carrier to move the workpiece continuously or intermittently in the furnace for heat treatment. The mesh belt furnace is mainly composed of four parts: furnace body, mesh belt transmission system, temperature control system, and atmosphere control system. The material is put into the feeding section of the furnace body, transported to the furnace by the mesh belt for heating and cooling, and finally flows out from the end to form a product.

[0050] The mesh belt furnace transports materials through the mesh belt. When installing the mesh belt, the friction between the mesh belt and the roller driving the mesh belt is difficult to control accurately. Repeated debugging is required to make the friction force moderate, and there is a problem of slow efficiency in mesh belt installation.

[0051] When the mesh belt furnace is in use, the mesh belt will shake over time. The shaking is caused by many factors. For example, there are chain links in the mesh belt. When it moves, the static friction and dynamic friction between the mesh belt and the transport plane are constantly switching. Since the static friction is greater than the dynamic friction, and the mesh belt is too long and there is a small gap between the chain links, the sudden change in force will cause the mesh belt to get stuck, that is, shake. For example, the different rigidities of multiple sections of the mesh belt furnace fixed bracket lead to different states of supporting the mesh belt. When the mesh belt moves, the local support rigidity is insufficient, resulting in shaking. For example, when the mesh belt passes through a transport plane composed of multiple platforms and there are steps at the platform docking position, the chain links get stuck, which can also cause shaking. The shaking will occupy part of the driving energy, thereby reducing the mesh belt transportation efficiency.

[0052] In view of this, the present application proposes a tensioning device and a mesh belt furnace, wherein the tensioning device is configured to tension the mesh belt, and the tensioning device includes: a fixed bracket; an adjusting bracket, wherein the first supporting portion of the adjusting bracket is movable relative to the fixed bracket; a first fixing member, fixedly connected to the fixed bracket, and the first fixing member has a first through hole; a first connecting rod, wherein the first end of the first connecting rod passes through the first through hole and is connected to the second supporting portion of the adjusting bracket; a first elastic member, sleeved on the first connecting rod, the first end of the first elastic member is connected to the second end of the first connecting rod, and the second end of the first elastic member is connected to the first fixing member; a first tensioning roller, rotatably connected to the third supporting portion of the adjusting bracket, and configured to tension the mesh belt; a driving roller, rotatably connected to the fixed bracket and adjacent to the first tensioning roller, and configured to drive the mesh belt; wherein the mesh belt passes between the first tensioning roller and the driving roller, and contacts with the surfaces of the first tensioning roller and the driving roller.

[0053] Since the distance between the first tensioning roller and the transmission roller will affect the contact area between the mesh belt and the first tensioning roller, as well as the contact area between the mesh belt and the transmission roller, and the contact area between the mesh belt and the transmission roller will affect the friction between the mesh belt and the transmission roller, the friction between the mesh belt and the transmission roller will be converted into the driving force of the mesh belt. If the distance between the first tensioning roller and the transmission roller is too small, the mesh belt in the middle will be stuck and cannot be transported. If the distance between the first tensioning roller and the transmission roller is too large, the friction with the mesh belt in the middle will be too small and cannot be transported.

[0054] Through this structure, first, when the mesh belt is installed, if the distance between the first tensioning roller and the driving roller is too small, the middle mesh belt will be stuck, which will make the mesh belt difficult to transport. At this time, the first connecting rod can be manually controlled to move in the direction away from the driving roller, so that the first connecting rod will drive the adjusting bracket and the first tensioning roller away from the driving roller, thereby increasing the distance between the first tensioning roller and the driving roller. Then the first connecting rod is fixed to the first fixing member through the first elastic member to ensure that the distance between the first tensioning roller and the driving roller is appropriate, avoiding the mesh belt in the middle from being stuck; second, when the mesh belt shakes while transporting materials, the mesh belt drives the first tensioning roller and the adjusting bracket to move away from the driving roller. , the first connecting rod moves, and the movement of the first connecting rod causes the first elastic member to generate a deformation force, and the deformation force reacts on the first connecting rod, thereby limiting the movable stroke of the first connecting rod, the adjustment bracket and the first tensioning roller, and ensuring that the friction between the mesh belt and the first tensioning roller, as well as between the mesh belt and the transmission roller is sufficient; thirdly, if there are obstacles such as product debris above the mesh belt and between the first tensioning roller and the transmission roller, the obstacle will push the first tensioning roller away from the transmission roller due to its own gravity, and the distance between the first tensioning roller and the transmission roller will increase to accommodate the obstacle to pass through, thereby preventing the obstacle from being stuck between the mesh belt and the transmission roller and damaging the transmission roller.

[0055] In summary, through this structure, the tension of the mesh belt can be adjusted dynamically in real time without repeated debugging, and the friction between the mesh belt and the transmission roller can be adjusted, that is, the driving force of the mesh belt can be adjusted, which not only improves the installation efficiency of the mesh belt, but also can adjust the tension of the mesh belt dynamically in real time according to the shaking situation of the mesh belt during the mesh belt transportation process, thereby improving the transportation efficiency of the mesh belt.

[0056] Exemplary Devices

[0057] Figure 1 FIG. 1 is a schematic diagram of the structure of a mesh belt furnace provided by an exemplary embodiment of the present application. Figure 2 An exemplary embodiment of the present application is shown. Figure 1 A local enlarged view of area A in FIG. 1 (i.e., a structural schematic diagram of the tensioning device). Figure 3An exemplary embodiment of the present application is shown. Figure 2 A partial enlarged view of area B in the middle.

[0058] like Figure 1 to Figure 3 As shown, the embodiment of the present application provides a tensioning device 100, which is configured to tension the mesh belt 200, wherein the tensioning device 100 includes: a fixed bracket 101; an adjusting bracket 102, wherein the first supporting portion of the adjusting bracket 102 has a first mounting hole; two first bearing seats 122, connected to the fixed bracket 101; a first supporting shaft 124, passing through the first mounting hole, wherein the first end of the first supporting shaft 124 is rotatably connected to a first bearing seat 122, and the second end of the first supporting shaft 124 is rotatably connected to another first bearing seat 122; a first fixing member 103, which is fixedly connected to the fixed bracket 101, and the first fixing member 103 has a first through hole; a first connecting rod 104, wherein the first end of the first connecting rod 104 passes through the first mounting hole The first through hole is connected to the second supporting portion of the adjusting bracket 102; the first elastic member 105 is sleeved on the first connecting rod 104, the first end of the first elastic member 105 is connected to the second end of the first connecting rod 104, and the second end of the first elastic member 105 is connected to the first fixing member 103; the first tensioning roller 106 is rotatably connected to the third supporting portion of the adjusting bracket 102, and is configured to tension the mesh belt 200; the transmission roller 117 is rotatably connected to the fixing bracket 101 and is adjacent to the first tensioning roller 106, and is configured to drive the mesh belt 200; wherein the mesh belt 200 passes between the first tensioning roller 106 and the transmission roller 117, and contacts with the surfaces of the first tensioning roller 106 and the transmission roller 117.

[0059] The first supporting portion, the second supporting portion and the third supporting portion may be disposed at any position of the adjusting bracket 102. The second end of the first elastic member 105 and the first fixing member 103 may be welded or abutted, for example.

[0060] Since the distance between the first tensioning roller 106 and the transmission roller 117 will affect the contact area between the mesh belt 200 and the first tensioning roller 106 and the contact area between the mesh belt 200 and the transmission roller 117, and the contact area between the mesh belt 200 and the transmission roller 117 will affect the friction between the mesh belt 200 and the transmission roller 117, the friction between the mesh belt 200 and the transmission roller 117 will be converted into the driving force of the mesh belt 200. If the distance between the first tensioning roller 106 and the transmission roller 117 is too small, the mesh belt 200 in the middle will be stuck and cannot be transported. If the distance between the first tensioning roller 106 and the transmission roller 117 is too large, the friction with the mesh belt 200 in the middle will be too small and cannot be transported.

[0061] Through this structure, first, when the mesh belt 200 is installed, if the distance between the first tensioning roller 106 and the transmission roller 117 is too small and the middle mesh belt 200 is stuck, it will make the mesh belt 200 difficult to transport. At this time, the first connecting rod 104 can be manually controlled to move away from the transmission roller 117, so that the first connecting rod 104 will drive the adjustment bracket 102 and the first tensioning roller 106 away from the transmission roller 117, thereby increasing the distance between the first tensioning roller 106 and the transmission roller 117. Then the first connecting rod 104 is fixed to the first fixing member 103 through the first elastic member 105 to ensure that the distance between the first tensioning roller 106 and the transmission roller 117 is appropriate to avoid the mesh belt 200 in the middle being stuck.

[0062] Second, when the mesh belt 200 vibrates while transporting materials, the mesh belt 200 drives the first tensioning roller 106, the adjusting bracket 102, and the first connecting rod 104 to move. The movement of the first connecting rod 104 causes the first elastic member 105 to generate a deformation force, and the deformation force reacts on the first connecting rod 104, thereby limiting the movable stroke of the first connecting rod 104, the adjusting bracket 102, and the first tensioning roller 106, ensuring that the friction between the mesh belt 200 and the first tensioning roller 106, and between the mesh belt 200 and the transmission roller 117 is sufficient.

[0063] Third, if there are obstacles such as product debris above the mesh belt 200 and between the first tensioning roller 106 and the transmission roller 117, the obstacle will push the first tensioning roller 106 away from the transmission roller 117 due to its own gravity. The distance between the first tensioning roller 106 and the transmission roller 117 increases to accommodate the obstacle to pass through, thereby preventing the obstacle from getting stuck between the mesh belt 200 and the transmission roller 117 and damaging the transmission roller 117.

[0064] In summary, through this structure, the tension of the mesh belt 200 can be adjusted dynamically in real time without repeated debugging, and the friction between the mesh belt 200 and the transmission roller 117 can be adjusted, that is, the driving force of the mesh belt 200 is adjusted, which not only improves the installation efficiency of the mesh belt 200, but also can adjust the tension of the mesh belt 200 in real time and dynamically according to the shaking situation of the mesh belt 200 during the transportation of the mesh belt 200, thereby improving the transportation efficiency of the mesh belt 200.

[0065] In some embodiments, the first connecting rod 104 may be a screw rod, and the first elastic member 105 may include a spring.

[0066] In some embodiments, Figure 3As shown, the first elastic member 105 includes: a spring 1051, which is sleeved on the first connecting rod 104; two spring fixing blocks 1052, which are sleeved on the first connecting rod 104, one spring fixing block 1052 is connected to the first end of the spring 1051, and the other spring fixing block 1052 is connected to the second end of the spring 1051; a fixing nut 1053, which is threadedly connected to the second end of the first connecting rod 104; wherein, one spring fixing block 1052 is connected to the first fixing member 103, and the other spring fixing block 1052 is in contact with the fixing nut 1053 on the side away from the spring 1051.

[0067] In some embodiments, the first connecting rod 104 is directly connected to the second supporting portion of the adjusting bracket 102 . For example, the first connecting rod 104 and the second supporting portion of the adjusting bracket 102 may be connected by welding.

[0068] In some other embodiments, the tensioning device 100 further includes: a guide block 121 , a first end of the guide block 121 is connected to the first end of the first connecting rod 104 , and a second end of the guide block 121 is connected to the second supporting portion of the adjusting bracket 102 .

[0069] In some embodiments, the first end of the first connecting rod 104 is connected to the first ends of the two guide blocks 121 , and the two guide blocks 121 are respectively welded to the first surface and the second surface of the adjustment bracket 102 , and the first surface and the second surface are two opposite surfaces of the adjustment bracket 102 .

[0070] In other embodiments, the first end of the first connecting rod 104 is connected to the first ends of the two guide blocks 121, and the two guide blocks 121 are respectively arranged on both sides of the adjusting bracket 102. The two guide blocks 121 have a second mounting hole, and the adjusting bracket 102 has a third mounting hole. The tensioning device 100 also includes a connecting member, which passes through the second mounting hole and the third mounting hole. The connecting member can be exemplarily a screw, a bolt, a pin, a connecting shaft, or a hard pipe.

[0071] In some embodiments, the first support portion is located at the first end of the adjustment bracket 102 (eg Figure 2 The second support portion is located at the upper end of the adjusting bracket 102, and the second support portion is located at the second end of the adjusting bracket 102 (such as Figure 2 The third support portion is located at the middle of the adjusting bracket 102 , wherein the middle of the adjusting bracket 102 is located between the first end of the adjusting bracket 102 and the second end of the adjusting bracket 102 .

[0072] Among them, the first end of the adjusting bracket 102 can be the upper part of the adjusting bracket 102, and the second end of the adjusting bracket 102 can be the lower part of the adjusting bracket 102, or, the first end of the adjusting bracket 102 can be the lower part of the adjusting bracket 102, and the second end of the adjusting bracket 102 can be the upper part of the adjusting bracket 102; that is, when the first supporting part is at the upper part of the adjusting bracket 102, the second supporting part is at the lower part of the adjusting bracket 102, and when the second supporting part is at the upper part of the adjusting bracket 102, the first supporting part is at the lower part of the adjusting bracket 102; wherein, when the first supporting part is at the upper part of the adjusting bracket 102, the structural stability is the strongest and the adjustability is the best.

[0073] Through this structure, under the condition of the same torque, the longer the lever arm, the smaller the required force. Therefore, the first support part and the second support part are respectively located at the two ends of the adjustment bracket 102, and the lever arm is extended. The first elastic member 105 can adjust the rotation angle or displacement of the adjustment bracket 102 with a smaller force, so that a smaller first elastic member can be used, reducing costs.

[0074] In other embodiments, the first support portion is located in the middle of the adjustment bracket 102, the second support portion is located at the first end of the adjustment bracket 102, and the third support portion is located at the second end of the adjustment bracket 102, wherein the middle of the adjustment bracket 102 is located between the first end of the adjustment bracket 102 and the second end of the adjustment bracket 102. That is, when the first support portion is in the middle of the adjustment bracket 102 and the second support portion is at the upper part of the adjustment bracket 102, the third support portion is at the lower part of the adjustment bracket 102, and when the third support portion is at the upper part of the adjustment bracket 102, the second support portion is at the lower part of the adjustment bracket 102.

[0075] In other embodiments, the tensioning device 100 also includes: a second fixing member, fixedly connected to the fixing bracket 101, the second fixing member having a fifth through hole; a second connecting rod, the first end of the second connecting rod passes through the fifth through hole and is connected to the fourth supporting portion of the adjusting bracket 102; a second elastic member, sleeved on the second connecting rod, the first end of the second elastic member is connected to the second end of the second connecting rod, and the second end of the second elastic member is connected to the second fixing member.

[0076] Among them, the third support part and the first support part are arranged in the middle part of the adjusting bracket 102, and the fourth support part and the second support part are respectively arranged at both ends of the adjusting bracket 102, that is, if the second support part is at the upper part of the adjusting bracket 102, the fourth support part is at the lower part of the adjusting bracket 102, and if the second support part is at the lower part of the adjusting bracket 102, the fourth support part is at the upper part of the adjusting bracket 102.

[0077] Among them, the connection method of the second fixing member, the second connecting rod and the second elastic member is the same as the connection method between the first fixing member 103, the first connecting rod 104 and the first elastic member 105. The structure of the second elastic member is the same as that of the first elastic member 105, which will not be repeated here.

[0078] In some embodiments, the number of the adjusting bracket 102, the first fixing member 103, the first connecting rod 104 and the first elastic member 105 are all two; wherein the first end of the first tensioning roller 106 is rotatably connected to the third supporting portion of one adjusting bracket 102, and the second end of the first tensioning roller 106 is rotatably connected to the third supporting portion of another adjusting bracket 102; the first end of a first connecting rod 104 passes through a first through hole of a first fixing member 103 and is connected to the second supporting portion of an adjusting bracket 102, and the first end of another first connecting rod 104 passes through another first fixing member The first through hole of the component 103 is connected to the second supporting portion of the other adjusting bracket 102; a first elastic component 105 is sleeved on a first connecting rod 104, a first end of a first elastic component 105 is connected to a second end of a first connecting rod 104, a second end of a first elastic component 105 is connected to a first fixing component 103, another first elastic component 105 is sleeved on another first connecting rod 104, a first end of another first elastic component 105 is connected to a second end of another first connecting rod 104, and a second end of another first elastic component 105 is connected to another first fixing component 103.

[0079] By symmetrically arranging two groups of adjustment brackets 102, first fixing members 103, first connecting rods 104 and first elastic members 105, the first tensioning roller 106 can be fixed and adjusted more balanced, thereby adjusting the mesh belt 200 more balanced and preventing the mesh belt 200 from swinging.

[0080] Figure 7b Shown is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application. Figure 7d An exemplary embodiment of the present application is shown. Figure 7b A partial enlarged view of the middle area R.

[0081] In some embodiments, when there are two adjustment brackets 102, there are two second fixing members, two second connecting rods, and two second elastic members. Any second fixing member, second connecting rod, and second elastic member constitute a group of elastic adjustment components. The two groups of elastic adjustment components are respectively connected to the two adjustment brackets 102 in the manner described in the above embodiment, and are respectively used to adjust the adjustment brackets 102 connected thereto.

[0082] In some embodiments, Figure 2 and 7dAs shown, the tensioning device 100 also includes: two second bearing seats 123, one second bearing seat 123 is connected to the third support portion of an adjusting bracket 102, the other second bearing seat 123 is connected to the third support portion of another adjusting bracket 102, the first end of the first tensioning roller 106 is rotatably connected to the one second bearing seat 123, and the second end of the first tensioning roller 106 is rotatably connected to the other second bearing seat 123.

[0083] The two adjustment brackets 102 are symmetrically arranged and support one end of the first tensioning roller 106 through the second bearing seat 123 respectively. This can more stably support the gravity of the first tensioning roller 106 while ensuring that the first tensioning roller 106 is always parallel to the transmission roller 117 during movement, and the mesh belt 200 will not suffer from eccentric wear.

[0084] In some embodiments, the number of the adjusting bracket 102, the first fixing member 103, the first connecting rod 104 and the first elastic member 105 are all two, and the tensioning device 100 also includes the above-mentioned two first bearing seats 122 and two second bearing seats 123, wherein any adjusting bracket 102, the first fixing member 103, the first connecting rod 104, the first elastic member 105, the first bearing seat 122 and the second bearing seat 123 are a group of sub-adjustment mechanisms arranged on one side, and the other group of sub-adjustment mechanisms are arranged on the other side, and the two groups of sub-adjustment mechanisms are connected in the manner described in the above embodiment.

[0085] Specifically, the two first bearing seats 122 are respectively connected to the two sides of the fixed bracket 101, the two ends of the first support shaft 124 are respectively connected to the two first bearing seats 122, the first support parts of the two adjusting brackets 102 are respectively rotatably connected to the first support shaft 124, the third support parts of the two adjusting brackets 102 are respectively provided with second bearing seats 123, the two ends of the first tensioning roller 106 are respectively connected to the two second bearing seats 123, the second support part of each adjusting bracket 102 is connected to the first end of the first connecting rod 104, each first connecting rod 104 is sleeved with a first elastic member 105, the first end of each first elastic member 105 is connected to the second end of the first connecting rod 104, and the second end of each first elastic member 105 is connected to the first fixed member 103.

[0086] By symmetrically arranging two groups of sub-adjusting structures, the first tensioning roller 106 can be made parallel to the driving roller 117, thereby preventing the mesh belt 200 from swinging.

[0087] Figure 4 FIG. 1 is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application. Figure 5 An exemplary embodiment of the present application is shown. Figure 4 A partial enlarged view of area C in the middle.

[0088] In some embodiments, Figure 5 As shown, the tensioning device 100 also includes: a sliding bracket 107, which has a slide groove, and the extension direction of the slide groove is at an angle with the horizontal direction (such as the slide groove can be set in the vertical direction or inclined); a gravity roller 108, the end of the gravity roller 108 is inserted into the slide groove, the gravity roller 108 contacts the upper surface of the mesh belt 200, is configured to tension the mesh belt 200, and can slide along the extension direction of the slide groove. Specifically, the end of the gravity roller 108 can slide in the slide groove, the mesh belt 200 is wound around the bottom of the gravity roller 108, and the gravity roller 108 can slide downward to press the mesh belt 200 when the mesh belt 200 is relaxed, and slide upward under the thrust of the mesh belt 200 when the mesh belt 200 is tightened, so as to tighten the mesh belt 200 to a suitable degree. By setting the gravity roller 108, the mesh belt 200 can be flexibly and adaptively tensioned according to the tightness of the mesh belt 200.

[0089] In some embodiments, the tensioning device 100 includes two sliding brackets 107, and the two ends of the gravity roller 108 are respectively inserted into the sliding grooves of the two sliding brackets 107. The symmetrical arrangement of the two sliding brackets 107 can make the gravity roller 108 parallel to the transmission roller 117 to prevent the mesh belt 200 from swinging.

[0090] Figure 6 An exemplary embodiment of the present application is shown. Figure 5 Cross-sectional view taken along the LL direction.

[0091] In some embodiments, Figure 6 As shown, the gravity roller 108 includes a gravity roller shaft 1081 and a bearing 1082. The gravity roller shaft 1081 contacts the upper surface of the mesh belt 200. The end of the gravity roller shaft 1081 is sleeved with the bearing 1082. The end of the gravity roller shaft 1081 and the bearing 1082 extend into the slide groove. The diameter of the bearing 1082 is larger than the width of the slide groove opening (the width direction of the slide groove opening is perpendicular to the extension direction of the slide groove), so that the bearing 1082 cannot be separated from the slide groove from the slide groove opening, thereby improving the stability of the structure, and when the gravity roller 108 slides in the slide groove, if the bearing 1082 contacts the inner wall of the slide groove, the bearing 1082 can roll on the inner wall of the slide groove, reducing the friction between the gravity roller 108 and the inner wall of the slide groove.

[0092] In some embodiments, Figure 5As shown, the fixed bracket 101 has a first threaded hole, and the tensioning device 100 also includes: a fourth bearing seat 112, connected to the fixed bracket 101, the fourth bearing seat 112 has a first waist-shaped hole 1121; a first adjusting screw, the first adjusting screw passes through the first waist-shaped hole 1121 and is screwed to the first threaded hole; a second tensioning roller 113, rotatably connected to the fourth bearing seat 112, the second tensioning roller 113 is in contact with the surface of the mesh belt 200, and is configured to tension the mesh belt 200; wherein, the gravity roller 108 is arranged between the first tensioning roller 106 and the second tensioning roller 113, the mesh belt 200 is in contact with the upper surfaces of the first tensioning roller 106 and the second tensioning roller 113, and the mesh belt 200 is in contact with the lower surface of the gravity roller 108.

[0093] Specifically, the gravity roller 108 is disposed between the first tensioning roller 106 and the second tensioning roller 113, so that the tension of the mesh belt 200 can be better adjusted, and the gravity roller 108 is close to the first tensioning roller 106, that is, close to the transmission roller 117, so that the driving force between the transmission roller 117 and the mesh belt 200 can be timely guaranteed. In addition, the fourth bearing seat 112 can move relative to the first threaded hole along the extension direction of the first waist hole 1121, and the moved fourth bearing seat 112 is fixed to the fixed bracket 101 by the first adjusting screw, so that the second tensioning roller 113 connected to the fourth bearing seat 112 can tension the mesh belt 200.

[0094] Figure 7a An exemplary embodiment of the present application is shown. Figure 4 A partial enlarged view of area D in the middle. Figure 7c An exemplary embodiment of the present application is shown. Figure 7b A partial enlarged view of area O in the middle.

[0095] In some embodiments, Figure 7bAs shown, the fixed bracket 101 has a track 1011 and a second through hole 1012, and the extension direction of the track 1011 is the same as the extension direction of the second through hole 1012; wherein, the tensioning device 100 also includes: a first nut, connected to the fixed bracket 101 (specifically, it can be connected to the surface of the fixed bracket 101 away from the third bearing seat 109); the third bearing seat 109, which is slidably connected to the track 1011 and has a third through hole 1091; an adjusting bolt 110, the first end of the adjusting bolt 110 passes through the third through hole 1091 and is threadedly connected to the second nut, and the second end of the adjusting bolt 110 passes through the second through hole 1012 and is threadedly connected to the first nut; a balancing roller 111, which is rotatably connected to the third bearing seat 109, the balancing roller 111 is in contact with the surface of the mesh belt 200, and is configured to correct the deflection of the mesh belt 200. During adjustment, the third bearing seat 109 on the track 1011 can be fixed by adjusting the position of the screw connection between the adjusting bolt 110 and the first nut to adjust the end position of the balancing roller 111, thereby adjusting the deflection of the mesh belt 200.

[0096] In some embodiments, the tensioning device 100 further includes: two groups of mesh belt balancing adjustment components, which are respectively arranged on both sides of the fixed bracket 101, and one mesh belt balancing adjustment component includes a first nut, a third bearing seat 109, a second nut and an adjustment bolt 110; wherein the first end of the balancing roller 111 is rotatably connected to the third bearing seat 109 in one group of mesh belt balancing adjustment components, and the second end of the balancing roller 111 is rotatably connected to the third bearing seat 109 in the other group of mesh belt balancing adjustment components. Through this structure, the displacement of the two third bearing seats 109 can be adjusted to adjust the balancing roller 111, so that the deflected mesh belt 200 can be corrected, thereby returning the mesh belt 200 to the correct track.

[0097] Figure 8 FIG. 1 is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application. Fig. 9 An exemplary embodiment of the present application is shown. Figure 8 A partial enlarged view of area E in the middle.

[0098] In some embodiments, Fig. 9As shown, the fixed bracket 101 has a second threaded hole, and the tensioning device 100 also includes: a first sprocket 114, configured to provide a driving force; a second sprocket 115, connected to a transmission roller 117 (the transmission roller 117 has a transmission roller shaft, and the second sprocket 115 can be sleeved on the transmission roller shaft), and configured to transmit a driving force; a chain 116, sleeved on the first sprocket 114 and the second sprocket 115, and meshed with the first sprocket 114 and the second sprocket 115; a fifth bearing seat 118, connected to the fixed bracket 101, and the fifth bearing seat 118 has a second waist-shaped hole; a second adjusting screw, the second adjusting screw passes through the second waist-shaped hole and is screwed to the second threaded hole; a tensioning shaft 119, the tensioning shaft 119 is inserted into the fifth bearing seat 118, and is rotatably connected to the fifth bearing seat 118; a tensioning sprocket 120, sleeved on the tensioning shaft 119, meshed with the chain 116, and configured to tension the chain 116. Specifically, by adjusting the relative position of the fifth bearing seat 118 and the fixing bracket 101, and fixing the fifth bearing seat 118 by the second adjusting screw, the position of the tensioning sprocket 120 can be adjusted. Since the chain 116 is engaged with the tensioning sprocket 120, the position of the chain 116 can be adjusted to achieve the tensioning of the chain 116, such as Fig. 9 As shown, the fifth bearing seat 118 can be adjusted in the vertical direction. Adjusting the fifth bearing seat 118 upward can allow the tensioning sprocket 120 to tighten the chain 116.

[0099] In some embodiments, the fixing bracket 101 is made of high-strength corrosion-resistant steel.

[0100] In some embodiments, when the fixing bracket 101 is manufactured, a heat-resistant spraying process is performed on the surface, thereby extending the service life.

[0101] In some embodiments, the fixing bracket 101 includes: a plurality of sub-fixing brackets. Specifically, since the overall length of the mesh belt furnace 100 is relatively long (e.g., 27 meters), the required length of the fixing bracket 101 is relatively long, and the fixing bracket is divided into multiple sub-fixing brackets for processing, which can reduce the processing difficulty. Here, each sub-fixing bracket can be connected by a high-strength fastener, such as a screw, a bolt, etc.

[0102] Based on the same concept, the embodiment of the present application also provides a mesh belt furnace 300. Figure 1 and Figure 2 As shown, the mesh belt furnace 300 includes: a mesh belt 200; a transmission device 301, configured to drive the mesh belt 200 to move; and any tensioning device 100 in the first aspect described above, configured to tension the mesh belt 200.

[0103] In a specific example, if Figure 2 and Fig. 9As shown, the transmission device 301 includes a motor 3011, and the motor 3011 is connected to the first sprocket 114 to drive the first sprocket 114 to rotate. Among them, the motor 3011 can be a variable frequency motor, and the transmission device 301 can also include a reducer, and the motor 3011 is connected to the reducer, and drives the first sprocket 114 through the reducer. In practical applications, the output torque of the motor 3011 can be adjusted according to the actual working conditions by the motor controller to adjust the movement speed of the mesh belt 200. For example, the speed of the mesh belt 200 can be steplessly adjusted between 200 and 1000 mm / min.

[0104] In some embodiments, the mesh belt furnace 300 may include a drying system, a heating system (including a preheating area and a high temperature area), a cooling system, and a transportation system. Figure 1 The far left end is the feed port, area J is the drying system, area F is the preheating area, area G is the high temperature area, area K is the cooling system, area A is the transportation system, and the far right end is the discharge port.

[0105] In some embodiments, the mesh belt 200 is made of stainless steel, such as SUS316L, which has good high temperature resistance and corrosion resistance, and can extend the service life of the mesh belt 200.

[0106] Fig.10 FIG. 1 is a schematic diagram of the structure of a heating area provided by an exemplary embodiment of the present application. Fig.11 FIG. 1 is a top view of a heating area provided by an exemplary embodiment of the present application. Fig.12a An exemplary embodiment of the present application is shown. Figure 8 Cross-sectional view taken along the NN direction.

[0107] In some embodiments, Figure 8 , Figure 10 to Figure 12a As shown, the mesh belt furnace 300 also includes: a furnace chamber 302, including multiple heating areas; a first furnace 303, arranged in the heating area, the first furnace 303 has a reaction chamber, and the mesh belt 200 passes through the reaction chamber; multiple heating rods 304, respectively arranged in multiple heating areas, configured to heat the first furnace 303; a heating controller, which is connected to the heating rods 304 in the multiple heating areas, and is configured to control the power of the heating rods 304 in the multiple heating areas. By independently controlling the temperature of multiple heating areas, the temperature in the reaction chamber can be accurately controlled. Among them, the first furnace 303 is a processing place for brazing materials.

[0108] In a specific example, if Figure 2As shown, the furnace 302 includes a preheating area F and a high temperature area G. The preheating area F includes three heating areas, and the high temperature area G includes four heating areas. 18 heating rods 304 are evenly arranged in each heating area. In any heating area, 9 heating rods 304 are arranged on the top and 9 heating rods 304 are arranged on the bottom, so as to achieve uniform heating of the heating areas.

[0109] In some embodiments, the number of the heating rods 304 may be 3N, where N is a natural number.

[0110] The heating rods 304 in each heating area are electrically connected in a star connection, that is, the number of heating rods 304 can be 3N+3. For example, in each heating area in the preheating area F, there are two rows of 9 heating rods 304, 6 of the 9 heating rods 304 on the top are connected in series, 6 of the 9 heating rods 304 on the bottom are connected in series, and the other 3 heating rods 304 on the top are connected in series with the other 3 heating rods 304 on the bottom, and then these three groups of heating rods 304 in series are connected in a star shape; in each heating area in the high temperature area G, there are two rows of 9 heating rods 304, 3 of the 9 heating rods 304 on the top are connected in series and then connected in a star shape, and 3 of the 9 heating rods 304 on the bottom are connected in series and then connected in a star shape. Here, one heating area can be temperature controlled, or three groups of heating rods 304 connected in a star shape can be used as a sub-heating area for temperature control.

[0111] In some embodiments, the heating power of the preheating area F is lower than that of the high temperature area G. The material can first enter the preheating area F to slowly heat up, and then enter the high temperature area G to heat up to a high temperature.

[0112] In some embodiments, Fig.11 and Fig.12a As shown, the heating rod 304 includes: a ceramic rod 3041, the end of which is connected to the inner wall of the furnace 302; a heating wire 3042, which is wound around the ceramic rod 3041, and the end of the heating wire 3042 passes through the side wall of the furnace 302; and a ceramic block 3043, which is arranged on the outer wall of the furnace 302 and is configured to fix the end of the heating wire 3042.

[0113] Figure 12b FIG. 1 is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application. Fig.12c An exemplary embodiment of the present application is shown. Figure 12b A partial enlarged view of the middle area P. Fig.12d An exemplary embodiment of the present application is shown. Figure 12b A partial enlarged view of the middle area Q.

[0114] In some embodiments, Figure 12a to Figure 12dAs shown, the mesh belt furnace 300 also includes: a thermocouple 305, which passes through the heating area and / or the reaction chamber and is configured to measure the temperature of the heating area and / or the reaction chamber. Exemplarily, the thermocouple 305 can be a K-type thermocouple. In a specific example, two thermocouples 305 are arranged in each heating area, and the two thermocouples 305 are respectively arranged in the upper part and the lower part of the reaction chamber. Each thermocouple 305 is arranged in the horizontal direction at the center of the extension direction of the heating area, and the probe of the thermocouple 305 can also extend to the center of the heating area to better accurately measure the temperature in the heating area. In another example, as Fig.12c and Fig.12d As shown, the first furnace 303 is divided into multiple sections of sub-furnaces (such as the sub-furnace corresponding to the preheating area F and the sub-furnace corresponding to the high temperature area G), and the thermocouples 305 are arranged at both ends of the multiple sections of the sub-furnaces. The mesh belt furnace 300 may also include a protective tube 313, and the thermocouple 305 may be covered with a protective tube 313 ( Fig.12c and Fig.12d The thermocouple 305 is disposed in the protection tube 313).

[0115] In some embodiments, the furnace 302 is made of refractory heat-insulating material, preferably a lightweight material, so as to improve the heat-insulating effect, prevent heat from escaping, and extend the service life of the furnace 302 .

[0116] In some embodiments, Fig.12a As shown, the mesh belt furnace 300 includes a frame 314, and the furnace 302 is formed by splicing ceramic fiber shells, which can be connected to the frame 314 by screws. Since the thermal conductivity of the ceramic fiber shell is about 0.18W / (m·k), it can effectively isolate the heat in the heating area and reduce the heat loss that causes the external temperature of the frame to be too high.

[0117] In actual work, in order to prevent the product from being damaged by high temperature and improve the brazing quality, the heating rod 304 can be heated in a segmented heating manner, that is, multiple temperature nodes are set, and the current temperature is gradually increased from low to high to the temperature node, and each temperature node is heated at a constant temperature for a period of time, and finally heated to the highest temperature for heating. For example, five temperature nodes can be set, with a difference of 100°C between adjacent temperature nodes, and each temperature node is heated at a constant temperature for 15 to 30 minutes. The highest temperature can be 700°C for example, and the temperature uniformity of ±3°C can be maintained in the furnace 302. When performing temperature control, the thermocouple 305 is configured to collect the real-time temperature of the furnace 302 and the first furnace 303 in real time, and send the real-time temperature to the heating controller. The heating controller is configured to perform PID calculation according to the real-time temperature, and control the power of the heating rod 304 according to the calculation result to achieve constant temperature control. Here, the heating controller can exemplarily achieve a temperature control accuracy of ±1°C.

[0118] Fig.13 An exemplary embodiment of the present application is shown. Figure 4 A partial cross-sectional view of the middle area H taken along the MM direction.

[0119] In some embodiments, Fig.13 As shown, the mesh belt furnace 300 also includes: a second furnace 306, the second furnace 306 has a cooling cavity, the reaction cavity is connected to the cooling cavity, and the mesh belt 200 passes through the cooling cavity; a cooling cylinder 307, the cooling cylinder 307 is sleeved on at least a portion of the second furnace 306, a cavity is formed in the cooling cylinder 307, the cooling cylinder 307 has an air inlet 3071 and an air outlet 3072 connected to the cavity, the air inlet 3071 is configured to pass a cooling medium into the cavity, and the air outlet 3072 is configured to discharge the cooling medium in the cavity.

[0120] Specifically, after the product heated at high temperature in the reaction chamber is transported to the second furnace 306 through the mesh belt 200, a cooling medium can be introduced into the cavity of the cooling cylinder 307 from the air inlet 3071, and the cooling medium contacts the outer wall of the second furnace 306, thereby cooling the product in the second furnace.

[0121] In some embodiments, the cooling medium may be cooling gas or cooling liquid, and the cooling gas may exemplarily be nitrogen.

[0122] In some embodiments, the furnace core (also called muffle tube, including the first furnace core 303 and / or the second furnace core 306) can be made of stainless steel, such as SUS316L, which has the advantages of uniform heat transfer and high temperature resistance.

[0123] In some embodiments, in order to improve the structural strength of the furnace, the outer wall of the furnace has a plurality of reinforcing ribs. For example, the plurality of reinforcing ribs can be vertically arranged and arranged in a corrugated shape on the outer wall of the furnace.

[0124] In some embodiments, in order to facilitate processing of the furnace, the furnace may include a plurality of sub-furnaces, and the plurality of sub-furnaces may be assembled into a furnace. For example, three sub-furnaces may be assembled into a furnace.

[0125] In some embodiments, the mesh belt furnace 300 further includes: a pipeline, a first end of the pipeline is connected to the reaction chamber, and a second end of the pipeline is connected to the gas outlet 3072. Through this structure, the cooling medium (such as nitrogen) introduced into the cold air cylinder 307 can enter the reaction chamber through the pipeline to reduce the oxygen content in the reaction chamber, thereby realizing the reuse of the cooling medium and saving energy.

[0126] In some embodiments, Fig.13As shown, the mesh belt furnace 300 further includes: at least one fan 308, which is disposed above the second furnace 306 and is configured to extract air from the bottom of the second furnace 306. Specifically, when the product is transported to the bottom of the fan 308, the fan 308 is started, and the air rises from the bottom of the second furnace 306, passes through the outer surface of the second furnace 306, and absorbs the heat of the second furnace 306.

[0127] In some embodiments, Fig.13 As shown, the cold air cylinder 307 can be arranged near the inlet end of the cooling chamber, and the fan 308 can be arranged above the middle area of ​​the cooling chamber. The second furnace 306 can be cooled by the fan 308 and the cold air cylinder 307, which can improve the cooling effect.

[0128] In some embodiments, the fan 308 can also be set at the discharge port to reduce the temperature of the product to room temperature when discharging, making it easier to take the material.

[0129] Fig.14 FIG. 1 is a schematic structural diagram of a mesh belt furnace provided by another exemplary embodiment of the present application. Fig.15 An exemplary embodiment of the present application is shown. Fig.14 A partial enlarged view of area I in the middle.

[0130] In some embodiments, Fig.15 As shown, the mesh belt furnace 300 also includes: a plurality of air inlet pipes 309, which are respectively connected to the reaction chamber, the cavity, and the cooling chamber, and are configured to introduce gas (such as nitrogen) into the reaction chamber, the cavity, and the cooling chamber; a plurality of detection tubes, wherein the first ends of the plurality of detection tubes are respectively connected to the reaction chamber and the cooling chamber; and an oxygen analyzer 310, wherein the oxygen analyzer 310 is connected to the second ends of the plurality of detection tubes, and is configured to detect the oxygen content of the gas in the reaction chamber and the cooling chamber.

[0131] Specifically, when the product is sintered, it is necessary to detect the oxygen content inside the furnace in real time to prevent the product from being oxidized. The air inlet pipe 309 is connected to the air inlet device. Stable gas (such as nitrogen) can be introduced into the reaction chamber and the cooling chamber through the air inlet pipe 309 to reduce the oxygen content. The gas is introduced into the cavity to cool the second furnace 306. The oxygen content in the furnace can be accurately measured by the oxygen analyzer 310. A flange stop valve is also provided on the air inlet pipe 309, and the flange stop valve can control the on and off of the input gas. In practical applications, the reaction chamber and the cooling chamber can be connected to multiple evenly distributed detection tubes to measure the oxygen content at different positions.

[0132] In some embodiments, Fig.15 As shown, the mesh belt furnace 300 further includes a gas flow meter 311 , which is configured to detect the flow rate of the gas introduced into the gas inlet pipe 309 .

[0133] In some embodiments, the mesh belt furnace further includes: an air intake valve connected to the air intake pipe 309 , and configured to regulate the gas flow output by the air intake pipe 309 .

[0134] In some embodiments, the mesh belt furnace 300 further includes: an atmosphere controller, which is connected to the oxygen analyzer 310 and the air intake valve in communication. The atmosphere controller can receive real-time oxygen content data sent by the oxygen analyzer and control the opening of the air intake valve according to a preset algorithm. For example, when the oxygen content exceeds a threshold, the atmosphere controller can control the air intake valve to open wider to quickly reduce the oxygen content. In a specific example, the atmosphere controller can control the oxygen content inside the furnace to be less than 50ppm.

[0135] The motor controller, heating controller, and atmosphere controller may be the same controller or multiple controllers that are separately provided.

[0136] In some embodiments, Fig.13 As shown, the mesh belt furnace 300 further includes a waste box 312, which is disposed below the second furnace 306 and is configured to receive waste residue dropped from the product. Specifically, since there is a fourth through hole below the second furnace 306 and the mesh belt 200 has a hollow gap, during the transportation of the product, the waste residue on the product can pass through the hollow gap and the fourth through hole and drop into the waste box 312.

[0137] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0138] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0139] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0140] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0141] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A tensioning device, characterized in that: The invention is configured to tension a mesh belt, wherein the tensioning device comprises: Fixed bracket; An adjusting bracket, wherein the first supporting portion of the adjusting bracket has a first mounting hole; Two first bearing seats connected to the fixed bracket; A first support shaft passes through the first mounting hole, a first end of the first support shaft is rotatably connected to one of the first bearing seats, and a second end of the first support shaft is rotatably connected to another of the first bearing seats; A first fixing member, fixedly connected to the fixing bracket, wherein the first fixing member has a first through hole; a first connecting rod, a first end of which passes through the first through hole and is connected to the second supporting portion of the adjusting bracket; A first elastic member, sleeved on the first connecting rod, wherein a first end of the first elastic member is connected to a second end of the first connecting rod, and a second end of the first elastic member is connected to the first fixing member; A first tensioning roller, rotatably connected to the third supporting portion of the adjusting bracket, and configured to tension the mesh belt; a driving roller, rotatably connected to the fixed bracket and adjacent to the first tensioning roller, and configured to drive the mesh belt; Wherein, the mesh belt passes between the first tensioning roller and the driving roller, and contacts with the surfaces of the first tensioning roller and the driving roller.

2. The tensioning device according to claim 1, characterized in that: The number of the adjustment bracket, the first fixing member, the first connecting rod and the first elastic member are all two; Wherein, the first end of the first tensioning roller is rotatably connected to the third supporting portion of one of the adjusting brackets, and the second end of the first tensioning roller is rotatably connected to the third supporting portion of another adjusting bracket; The first end of one of the first connecting rods passes through the first through hole of one of the first fixing members and is connected to the second supporting portion of one of the adjusting brackets, and the first end of another of the first connecting rods passes through the first through hole of another of the first fixing members and is connected to the second supporting portion of another of the adjusting brackets; One of the first elastic members is sleeved on one of the first connecting rods, the first end of one of the first elastic members is connected to the second end of one of the first connecting rods, the second end of one of the first elastic members is connected to one of the first fixing members, another of the first elastic members is sleeved on another of the first connecting rods, the first end of another of the first elastic members is connected to the second end of another of the first connecting rods, and the second end of another of the first elastic members is connected to another of the first fixing members.

3. The tensioning device according to claim 1 or 2, characterized in that: The first support portion is located at the first end of the adjustment bracket, the second support portion is located at the second end of the adjustment bracket, and the third support portion is located in the middle of the adjustment bracket, wherein the middle of the adjustment bracket is located between the first end of the adjustment bracket and the second end of the adjustment bracket.

4. The tensioning device according to claim 1 or 2, characterized in that: The first elastic member comprises: A spring, sleeved on the first connecting rod; Two spring fixing blocks are sleeved on the first connecting rod, one of the spring fixing blocks is connected to the first end of the spring, and the other spring fixing block is connected to the second end of the spring; A fixing nut, threadedly connected to the second end of the first connecting rod; Wherein, one of the spring fixing blocks is connected to the first fixing member, and a side of the other spring fixing block away from the spring is in contact with the fixing nut.

5. The tensioning device according to claim 2, characterized in that: The first support portion is located at the middle of the adjustment bracket, the second support portion is located at the first end of the adjustment bracket, and the third support portion is located at the second end of the adjustment bracket, wherein the middle of the adjustment bracket is located between the first end of the adjustment bracket and the second end of the adjustment bracket.

6. The tensioning device according to claim 1 or 2, characterized in that: Also includes: A sliding bracket having a sliding groove, wherein the extending direction of the sliding groove is at an angle to the horizontal direction; A gravity roller, the end of which is inserted into the slide groove, the gravity roller contacts the upper surface of the mesh belt, is configured to tension the mesh belt, and can slide along the extension direction of the slide groove.

7. The tensioning device according to claim 1 or 2, characterized in that: The fixing bracket has a track and a second through hole, and the extending direction of the track is the same as the extending direction of the second through hole; Wherein, the tensioning device further comprises: A first nut connected to the fixing bracket; A third bearing seat, slidably connected to the track, and having a third through hole; a second nut connected to the third bearing seat; an adjusting bolt, wherein a first end of the adjusting bolt passes through the third through hole and is threadedly connected to the second nut, and a second end of the adjusting bolt passes through the second through hole and is threadedly connected to the first nut; A balancing roller is rotatably connected to the third bearing seat, and the balancing roller contacts the surface of the mesh belt and is configured to correct the deflection of the mesh belt.

8. The tensioning device according to claim 7, characterized in that: The tensioning device also includes: Two groups of mesh belt balancing adjustment components are respectively arranged on both sides of the fixed bracket, and one of the mesh belt balancing adjustment components includes the first nut, the third bearing seat, the second nut and the adjustment bolt; Wherein, the first end of the balancing roller is rotatably connected to the third bearing seat in one group of the mesh belt balancing adjustment components, and the second end of the balancing roller is rotatably connected to the third bearing seat in another group of the mesh belt balancing adjustment components.

9. The tensioning device according to claim 6, characterized in that: The fixing bracket has a first threaded hole, and the tensioning device further comprises: A fourth bearing seat, connected to the fixing bracket, the fourth bearing seat having a first waist-shaped hole; a first adjusting screw, the first adjusting screw passing through the first waist-shaped hole and being screwed into the first threaded hole; a second tensioning roller, rotatably connected to the fourth bearing seat, the second tensioning roller being in contact with the surface of the mesh belt and configured to tension the mesh belt; Wherein, the gravity roller is arranged between the first tensioning roller and the second tensioning roller, the mesh belt contacts the upper surfaces of the first tensioning roller and the second tensioning roller, and the mesh belt contacts the lower surface of the gravity roller.

10. The tensioning device according to claim 1 or 2, characterized in that: The fixing bracket has a second threaded hole, and the tensioning device further comprises: a first sprocket configured to provide a driving force; a second sprocket, connected to the transmission roller and configured to transmit the driving force; A chain, sleeved on the first sprocket and the second sprocket, and meshed with the first sprocket and the second sprocket; A fifth bearing seat connected to the fixing bracket, wherein the fifth bearing seat has a second waist-shaped hole; a second adjusting screw, the second adjusting screw passing through the second waist-shaped hole and being screwed into the second threaded hole; A tensioning shaft, the tensioning shaft is inserted into the fifth bearing seat and is rotatably connected to the fifth bearing seat; The tensioning sprocket is sleeved on the tensioning shaft, meshed with the chain, and configured to tension the chain.

11. A mesh belt furnace, characterized in that: include: Mesh belt; A transmission device, configured to drive the mesh belt to move; The tensioning device according to any one of claims 1 to 10 is configured to tension the mesh belt.

12. The mesh belt furnace according to claim 11, characterized in that: Also includes: a furnace, including a plurality of heating zones; A first furnace, disposed in the heating area, wherein the first furnace has a reaction chamber, and the mesh belt passes through the reaction chamber; A plurality of heating rods are respectively disposed in the plurality of heating regions and are configured to heat the first furnace; The heating controller is connected to the heating rods in the plurality of heating areas for communication and is configured to control the power of the heating rods in the plurality of heating areas respectively.

13. The mesh belt furnace according to claim 12, characterized in that: Also includes: a second furnace, wherein the second furnace has a cooling cavity, the reaction cavity is connected to the cooling cavity, and the mesh belt passes through the cooling cavity; A cooling tube, wherein the cooling tube is sleeved on at least a portion of the second furnace, a cavity is formed in the cooling tube, the cooling tube has an air inlet and an air outlet connected to the cavity, the air inlet is configured to pass a cooling medium into the cavity, and the air outlet is configured to discharge the cooling medium in the cavity.

14. The mesh belt furnace according to claim 13, characterized in that: Also includes: A pipeline, a first end of the pipeline is connected to the reaction chamber, and a second end of the pipeline is connected to the gas outlet.

15. The mesh belt furnace according to claim 13 or 14, characterized in that: Also includes: A plurality of air inlet pipes, respectively connected to the reaction chamber, the cavity, and the cooling chamber, and configured to introduce gas into the reaction chamber, the cavity, and the cooling chamber; A plurality of detection tubes, wherein first ends of the plurality of detection tubes are respectively connected to the reaction chamber and the cooling chamber; An oxygen analyzer is connected to the second ends of the plurality of detection tubes and is configured to detect the oxygen content of the gas in the reaction chamber and the cooling chamber.

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