Kiln circulation production line

Abstract

The utility model belongs to the field of roller kilns, and particularly relates to a kiln circulation production line which comprises a feeding section, a heating section, a cooling section and a sagger discharging and feeding section which are sequentially connected end to end. The sagger unloading and loading section comprises a sagger cover conveying line, a sagger body conveying line, a cover taking mechanism, an unloading mechanism, a loading mechanism and a cover closing mechanism, the cover taking mechanism, the unloading mechanism, the loading mechanism and the cover closing mechanism are sequentially arranged on the sagger body conveying line, one end of the sagger cover conveying line is connected with the cover taking mechanism, and the other end of the sagger cover conveying line is connected with the cover closing mechanism. According to the kiln circulation production line, automatic circulation production can be achieved, the whole circulation of firing and cooling of materials, discharging after firing and cooling, feeding of raw materials and then re-firing can be completed, manpower can be reduced, automatic circulation production can be achieved, meanwhile, continuous use of the heating section and the cooling section can be achieved, and the production efficiency is improved. Therefore, heat and cold loss caused by shutdown can be greatly reduced, energy consumption is reduced, and recycling of the saggar can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of roller kilns, and particularly relates to a kiln circulating production line. Background Art

[0002] The roller kiln is a widely used ceramic sintering device, which can be used to produce daily-use porcelain, sanitary porcelain, bricks and tiles, electrode materials and other products. Taking the atmosphere-protected roller kiln as an example, its basic working principle is: using a motor to drive multiple rows of roller rods to rotate, continuously sending the powder materials contained in graphite crucibles into a closed furnace body dozens of meters long, and after high-temperature sintering at about 800 °C, the materials are taken out of the furnace and enter the next process.

[0003] However, at present, the roller kiln has problems of low feeding and discharging efficiency, resulting in large heat loss, high energy consumption and low automation degree of the roller kiln. The Chinese utility model patent application "CN202177301U - A fully automatic atmosphere-protected resistance furnace" provides a fully automatic resistance furnace, which has three furnace bodies connected end to end, but its utilization rate of crucibles is low, and the automation degree still needs to be improved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a kiln circulating production line that can realize automatic circulation production, greatly reduce the heat and cold loss caused by shutdown, reduce energy consumption, and realize the recycling of crucibles.

[0005] The utility model provides a kiln circulating production line, which includes a feeding section, a heating section, a cooling section, and a crucible discharging and feeding section that are sequentially connected end to end;

[0006] The crucible discharging and feeding section includes a crucible cover transportation line, a crucible body transportation line, and a cover taking mechanism, a discharging mechanism, a loading mechanism, and a cover closing mechanism that are sequentially arranged on the crucible body transportation line. One end of the crucible cover transportation line is connected to the cover taking mechanism, and the other end is connected to the cover closing mechanism.

[0007] Furthermore, the crucible cover transportation line is parallel to the crucible body transportation line.

[0008] Furthermore, the conveying direction of the crucibles in the heating section is perpendicular to that in the feeding section and the cooling section.

[0009] Furthermore, a roller conveying mechanism is arranged in the heating section, and the crucible is conveyed from the upstream to the downstream of the heating section through the roller conveying mechanism;

[0010] An upstream crucible transfer platform is arranged at the upstream end of the heating section of the roller conveying mechanism, and a downstream crucible transfer platform is arranged at the downstream end;

[0011] A first pushing mechanism is arranged at the upstream end of the heating section, and a first pulling mechanism is arranged at the downstream end.

[0012] Furthermore, there are N1 conveying rollers with overrunning structures at both the upstream end and the downstream end of the roller conveyor mechanism;

[0013] The total spacing of the N1 conveying rollers with overrunning structures is longer than or equal to the width of the sagger, and N1 ≥ 2.

[0014] Furthermore, a feed inlet is arranged on the side of the upstream sagger transfer platform in the heating section, and a discharge outlet is arranged on the side of the downstream sagger transfer platform;

[0015] Sealed bin doors that can be opened and closed are arranged at the positions of the feed inlet and the discharge outlet.

[0016] Furthermore, the discharge outlet is connected to the cooling section, and a second pushing mechanism is arranged at the downstream end of the heating section to push the sagger on the downstream sagger transfer platform from the discharge outlet into the cooling section;

[0017] A feed vacuum bin is also arranged between the feed inlet and the feed section, and a discharge vacuum bin is arranged between the cooling section and the sagger discharging and loading section.

[0018] Furthermore, the conveying directions of the saggers in the cooling section and the sagger discharging and loading section are perpendicular to each other;

[0019] A discharge vacuum bin and a sagger transfer device are arranged in sequence between the cooling section and the sagger discharging and loading section;

[0020] Openings are arranged at opposite ends of the discharge vacuum bin, a first furnace door is arranged at one opening, and a second furnace door for connecting and separating the discharge vacuum bin and the cooling section is arranged at the other opening;

[0021] The sagger transfer device includes a first furnace door discharging mechanism and a second furnace door feeding mechanism;

[0022] The first furnace door discharging mechanism is used to move the sagger from the opening on the side of the first furnace door into the discharge vacuum bin when the first furnace door is open and the second furnace door is closed;

[0023] The second furnace door feeding mechanism includes a second linear drive mechanism, a connecting rod arranged at the output end of the second linear drive mechanism, and a sagger pulling block arranged at the end of the connecting rod. A sliding hole is arranged on the first furnace door, the connecting rod is slidably arranged in the sliding hole and the sagger pulling block is located inside the first furnace door. The second linear drive mechanism is used to drive the sagger pulling block to move in the discharge vacuum bin when the first furnace door is closed and the second furnace door is open, and move the sagger in the cooling section from the opening on the side of the second furnace door into the discharge vacuum bin.

[0024] Furthermore, the second furnace door feeding mechanism also includes a first furnace door opening and closing mechanism, and the first furnace door is arranged at the output end of the first furnace door opening and closing mechanism;

[0025] The moving direction of the first furnace door opening and closing mechanism is parallel to the moving direction of the second linear drive mechanism;

[0026] The sagger transfer device further includes a support and a support table movably arranged on the support along the X direction;

[0027] The first furnace door opening and closing mechanism and the second linear drive mechanism are arranged on the support table, and both the first furnace door opening and closing mechanism and the second linear drive mechanism move along the Y direction;

[0028] The first furnace door discharging mechanism includes a sagger bearing table arranged on the support table and a sagger pulling member that can move along the Y direction on the sagger bearing table;

[0029] The Y direction is parallel to the axis of the discharging vacuum chamber;

[0030] This kiln furnace circulating production line further includes a blanking device arranged on one side of the support;

[0031] The blanking device includes a conveying mechanism and a pulling mechanism, and the pulling mechanism is used to move the sagger from the sagger bearing table to the conveying mechanism.

[0032] The beneficial effects of the present utility model are that the kiln furnace circulating production line provided by the present utility model can realize automated cyclic production, complete a whole cycle of material firing, cooling, discharging after firing and cooling are completed, feeding of raw materials, and then re-firing, which can reduce labor, realize automated cyclic production, and at the same time can realize continuous use of the heating section and the cooling section. Furthermore, it can greatly reduce the heat and cold loss caused by shutdown, reduce energy consumption, and can also realize the cyclic use of saggers. Moreover, the sagger and the fired material are unloaded and re-loaded with raw materials after cooling, which can reduce the heat resistance requirements of the sagger unloading and loading sections. In addition, the layout of the sagger conveying line, lid removing mechanism, discharging mechanism, loading mechanism, lid closing mechanism, and sagger lid conveying line in the sagger unloading and loading sections can unload and load saggers with lids, remove the lid before unloading the fired and cooled material, close the lid after loading the raw materials, and at the same time can ensure that the sagger body and the sagger lid always correspond to ensure adaptability. Description of the Drawings

[0033] Appendix Figure 1 is a schematic structural diagram of the present utility model;

[0034] Appendix Figure 2 is a top view of the present utility model;

[0035] Appendix Figure 3 is a schematic structural diagram at the upstream end of the heating section of the present utility model;

[0036] Appendix Figure 4 is a partial structural diagram of the heating section of the present utility model;

[0037] Appendix Figure 5 is a schematic structural view of the downstream end of the heating section in the present utility model;

[0038] Appendix Figure 6 is a top-down sectional view of the downstream end of the heating section in the present utility model;

[0039] Appendix Figure 7 is a schematic structural view of the cooling section, the discharging vacuum chamber and the sagger transfer device in the present utility model;

[0040] Appendix Figure 8 is a schematic structural view of the discharging vacuum chamber and the sagger transfer device in the present utility model;

[0041] Appendix Figure 9 is Appendix Figure 8 a partial enlarged view of part A in

[0042] Appendix Figure 10 is Appendix Figure 9 a partial enlarged view of part B in

[0043] Appendix Figure 11 is Appendix Figure 10 a partial enlarged view of part C in

[0044] Appendix Figure 12 is a schematic structural view of the sagger discharging and loading section in the present utility model.

[0045] In the figure, 1 is the section for discharging and loading the saggers; 11 is the sagger conveying line; 12 is the lid taking mechanism; 13 is the discharging mechanism; 14 is the loading mechanism; 15 is the lid closing mechanism; 16 is the sagger lid conveying line; 17 is the transfer bin; 2 is the feeding section; 3 is the feeding vacuum bin; 4 is the heating section; 41 is the feeding port; 42 is the discharging port; 43 is the upstream sagger transfer platform; 44 is the downstream sagger transfer platform; 45 is the first pushing mechanism; 46 is the first pulling mechanism; 47 is the second pushing mechanism; 48 is the roller conveyor mechanism; 481 are the conveying rollers; 482 is the driving assembly; 483 is the one-way clutch mechanism; 49 is the first kiln door; 410 is the second kiln door; 411 is the feeding conversion bin; 5 is the cooling section; 6 is the discharging vacuum bin; 61 is the first furnace door; 611 is the sliding hole; 612 is the sealing flange; 62 is the second furnace door; 7 is the sagger transfer device; 71 is the first furnace door discharging mechanism; 711 is the sagger bearing platform; 7111 is the chute; 712 is the sagger pulling piece; 713 is the connecting plate; 714 is the first linear driving mechanism; 72 is the second furnace door feeding mechanism; 721 is the second linear driving mechanism; 722 is the connecting rod; 723 is the sagger pulling block; 7231 is the fitting block; 7232 is the fitting block driving mechanism; 72321 is the driving rod; 72322 is the driving mechanism; 72323 is the gear; 72324 is the rack; 7233 is the abutting plate; 73 is the first furnace door opening and closing mechanism; 74 is the bracket; 75 is the support platform; 8 is the discharging device; 81 is the conveying mechanism; 82 is the pulling mechanism; 9 is the sagger; 91 is the sagger body; 911 is the mating groove; 92 is the sagger lid. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0051] As shown in the attached Figure 1 - attached Figure 12 As shown, the present utility model provides a kiln furnace circulating production line, which includes a feeding section 2, a heating section 4, a cooling section 5, and a sagger discharging and feeding section 1 that are sequentially connected end to end. That is, the other end of the sagger discharging and feeding section 1 is connected to the feeding section 2 to form a circulating production line. Taking the feeding section 2 as the starting point for description, the sagger 9 with materials is fed into the heating section 4 through the feeding section 2 for heating and firing. After firing is completed, it enters the cooling section 5 for cooling. After cooling is completed, it enters the sagger discharging and feeding section 1 to discharge the materials that have been fired and cooled and reload the raw materials. Then it re-enters the feeding section 2 for the second round of firing;

[0052] The sagger discharging and loading section 1 includes a sagger cover transportation line 16, a sagger body transportation line 11, and a cover taking mechanism 12, a discharging mechanism 13, a loading mechanism 14, and a cover closing mechanism 15 that are sequentially arranged on the sagger body transportation line 11. One end of the sagger cover transportation line 16 is connected to the cover taking mechanism 12, and the other end is connected to the cover closing mechanism 15. The sagger 9 moves on the sagger body transportation line 11 of the sagger discharging and loading section 1. When passing through the cover taking mechanism 12, the sagger cover 92 of the sagger 9 is opened, and the cover taking mechanism 12 transfers the sagger cover 92 to the sagger cover transportation line 16. Subsequently, when the sagger body 91 with the fired and cooled material passes through the discharging mechanism 13, discharging is carried out, and the fired and cooled material is poured out and transferred to the next working station through the transfer bin 17. Then, the empty sagger body 91 continues to be conveyed to the loading mechanism 14 to hold the raw materials. The sagger body 91 filled with raw materials is conveyed to the cover closing mechanism 15. At this time, the previously unloaded sagger cover 92 is conveyed to the cover closing mechanism 15 through the sagger cover transportation line 16. The cover closing mechanism 15 installs the sagger cover 92 on the sagger body 91 filled with raw materials to form a new group of saggers 9 to be sintered. Finally, the sagger 9 re-enters the feeding section 2 for the second round of firing, thereby realizing the cyclic production of the kiln, and the sagger 9 is recycled.

[0053] Among them, the cover taking mechanism 12 and the cover closing mechanism 15 can adopt the method of a manipulator with clamping jaws to realize the operations of taking the cover, closing the cover, placing the sagger cover 92 on the sagger cover transportation line 16, or taking the sagger cover 92 from the sagger cover transportation line 16. The discharging mechanism 13 can adopt a manipulator with clamping jaws to realize discharging by inverting the sagger body 91 for pouring. The loading mechanism 14 preferably uses a feeding machine for accurate feeding. It should be noted that the cover taking mechanism 12, the discharging mechanism 13, the loading mechanism 14, and the cover closing mechanism 15 can also adopt other mechanisms that can achieve the above functions.

[0054] The kiln cyclic production line provided by the present utility model can realize automated cyclic production, complete a whole cycle of firing, cooling, discharging after firing and cooling, loading raw materials, and then re-firing the materials, which can reduce labor, realize automated cyclic production, and at the same time can realize the continuous use of the heating section 4 and the cooling section 5. Furthermore, it can greatly reduce the heat and cold loss caused by shutdown, reduce energy consumption, and can also realize the recycling of the sagger 9. Moreover, the sagger 9 and the fired material are unloaded and re-loaded with raw materials after cooling, which can reduce the heat resistance requirements of the sagger discharging and loading section 1. In addition, the layout of the sagger body transportation line 11, the cover taking mechanism 12, the discharging mechanism 13, the loading mechanism 14, the cover closing mechanism 15, and the sagger cover transportation line 16 in the sagger discharging and loading section 1 can discharge and load the sagger 9 with a sagger cover 92, take the cover before unloading the fired and cooled material, close the cover after loading the raw materials, and at the same time can ensure that the sagger body 91 and the sagger cover 92 always correspond to ensure adaptability.

[0055] In one embodiment, the lid conveyor line 16 is parallel to the body conveyor line 11. In this case, on the one hand, it can avoid occupying additional factory space, and on the other hand, it can ensure the synchronous movement of the body 91 and the lid 92, so that the body 91 and the lid 92 are always correspondingly combined.

[0056] In one embodiment, the conveying direction of the saggers in the heating section 4 is perpendicular to that in the feeding section 2 and the cooling section 5, that is, the feeding section 2 and the cooling section 5 are parallel to each other and both are perpendicular to the heating section 4. In this embodiment, the heating section 4 adopts a side-in and side-out method for loading and unloading the saggers 9, which can reduce the sizes of the feeding port 41 and the discharging port 42 of the heating section 4. Furthermore, during the feeding and discharging process of the heating section 4, heat loss can be reduced and energy consumption can be lowered.

[0057] In one embodiment, a roller conveyor mechanism 48 is provided in the heating section 4, and the sagger 9 is conveyed from the upstream to the downstream of the heating section 4 through the roller conveyor mechanism 48. In this embodiment, the heating section 4 adopts a roller hearth kiln structure, which can carry saggers 9 and materials with large volume and heavy weight. An inlet 41 is provided on the side of the upstream end of the roller hearth kiln, and an outlet 42 is provided on the side of the downstream end. In other embodiments, the heating section 4 can also adopt continuous sintering structures such as a mesh belt type, a pusher type or a walking beam type.

[0058] An upstream sagger transfer platform 43 is provided at the upstream end of the heating section 4 where the roller conveyor mechanism 48 is located, and a downstream sagger transfer platform 44 is provided at the downstream end. Preferably, the upstream sagger transfer platform 43 and the downstream sagger transfer platform 44 are plate-shaped platforms made of graphite material. The sagger 9 slides frictionally on the upstream sagger transfer platform 43 and the downstream sagger transfer platform 44. At this time, the sagger 9 will not have inertial slippage during the movement process, and the conveying stability of the heavier sagger 9 and the materials can be improved.

[0059] A first pushing mechanism 45 is provided at the upstream end of the heating section 4, and a first pulling mechanism 46 is provided at the downstream end. Preferably, the first pushing mechanism 45 and the first pulling mechanism 46 are respectively arranged on the two end faces of the heating section 4. The sagger 9 enters the upstream sagger transfer platform 43 at the upstream end from the feed inlet 41, and the first pushing mechanism 45 pushes the sagger 9 onto the roller conveyor mechanism 48. At this time, since the sagger 9 slides frictionally on the upstream sagger transfer platform 43, it can increase the speed of the sagger 9 entering the roller conveyor mechanism 48, improve the feeding efficiency of the sagger 9 in the heating section 4, and at the same time, the problem of the sagger 9 hitting the upstream sagger due to inertial slip will not occur, thus improving the conveying stability. The first pulling mechanism 46 pulls the sagger 9 located at the downstream end of the roller conveyor mechanism 48 into the downstream sagger transfer platform 44 and enters the cooling section 5 from the discharge outlet 42. Similarly, at this time, since the sagger 9 slides frictionally with the downstream sagger transfer platform 44 during the process of being pulled into the downstream sagger transfer platform 44, it can increase the speed of the sagger 9 when exiting the roller conveyor mechanism 48, improve the discharging efficiency of the sagger 9 in the heating section 4, and at the same time, the problem of the sagger 9 hitting the upstream end face of the heating section 4 due to inertial slip will not occur, thus improving the conveying stability.

[0060] In this embodiment, the sagger transfer platform is used in cooperation with the first pushing mechanism 45 and the first pulling mechanism 46 to realize the entry and exit of the sagger 9 on the roller conveyor mechanism 48. On the one hand, it can increase the entry and exit speed of the sagger 9 relative to the roller conveyor mechanism 48, and at the same time ensure the stability during entry and exit, making it more convenient to realize the sequential conveying and firing of multiple materials at short intervals on the roller conveyor mechanism 48. On the other hand, it is also convenient for the materials to enter and exit stably and quickly from the feed inlet 41 and the discharge outlet 42 on the side of the heating section 4, and at the same time improve the feeding and discharging efficiency and stability when feeding at the feed inlet 41 and discharging at the discharge outlet 42.

[0061] In a preferred embodiment, a feed conversion bin 411 is provided at the upstream end of the heating section 4. In this embodiment, the upstream sagger transfer platform 43, the feed inlet 41, and the first pushing mechanism 45 of the heating section 4 are all arranged on the feed conversion bin 411, which is convenient for the feeding structure to be docked with the main structure of the heating section 4. Preferably, a first kiln door 49 is also provided between the feed conversion bin 411 and the heating section 4, so as to keep the heating section 4 in a closed state before the sagger 9 is pushed from the upstream sagger transfer platform 43 into the heating section 4, further reducing heat loss. Similarly, a second kiln door 410 is provided at the discharge outlet 42, so as to keep the heating section 4 in a closed state before the sagger 9 is pushed from the downstream sagger transfer platform 44 into the cooling section 5, further reducing heat loss.

[0062] In one embodiment, N1 conveying rollers 481 with overrunning structures are provided at both the upstream end and the downstream end of the roller conveyor mechanism 48, that is, N1 conveying rollers 481 at the upstream end are provided with overrunning structures, and N1 conveying rollers 481 are also provided with overrunning structures at the downstream section. The conveying rollers 481 with overrunning structures can be driven by power and rotate at a driving speed. When the sagger 9 moves on the conveying roller 481 at a conveying speed faster than that of the conveying roller 481 in the conveying direction, the conveying roller 481 will rotate faster than the driving speed, so as to adapt to the conveying speed of the sagger 9. After the sagger 9 has no external force or inertial force, the conveying roller 481 will return to the driving speed and rotate again;

[0063] The total interval of the N1 conveying rollers 481 with overrunning structures is longer than or equal to the width of the material, and N1≥2, that is, the N1 conveying rollers 481 with overrunning structures can completely carry one sagger 9. In this embodiment, the first pushing mechanism 45 can quickly push the sagger 9 from the upstream sagger transfer platform 43 into the roller conveyor mechanism 48 at a speed faster than the conveying speed of the conveying roller 481. Similarly, the first pulling mechanism 46 can quickly pull the sagger 9 from the roller conveyor mechanism 48 into the downstream sagger transfer platform 44 at a speed faster than the conveying speed of the conveying roller 481. Moreover, when the moving speed of the sagger 9 is faster than the conveying speed of the conveying roller 481, the conveying roller 481 will adaptively rotate at an overspeed to match the sagger 9, so that the conveying roller 481 will not generate sliding friction with the sagger 9, realizing the improvement of the quick loading and unloading of the sagger 9 from the roller conveyor mechanism 48 while avoiding damage to the conveying roller 481, improving the service life of the conveying roller 481, reducing the failure rate of the heating section 4, and thus reducing the downtime. In this embodiment, the intervals between multiple materials conveyed on the roller conveyor mechanism 48 can be very small, thereby improving the utilization rate of the furnace cavity of the heating section 4 and the heat utilization rate.

[0064] In a preferred embodiment, the roller conveyor mechanism 48 includes a plurality of conveying rollers 481. The N1 conveying rollers 481 with overrunning structures are specifically connected to the driving assembly 482 through a one-way clutch mechanism 483, and the rotation direction of the conveying roller 481 is opposite to the limiting direction of the one-way clutch mechanism 483. Preferably, the one-way clutch mechanism 483 is a one-way bearing, a ratchet or an overrunning clutch.

[0065] In one embodiment, the heating section 4 is provided with a feed inlet 41 on the side of the upstream sagger transfer platform 43 and a discharge outlet 42 on the side of the downstream sagger transfer platform 44. Preferably, the opening sizes of the feed inlet 41 and the discharge outlet 42 are smaller than the conveying size in the conveying direction of the heating section 4. When the sagger 9 has a long-strip structure, the sagger 9 can enter and exit the feed inlet 41 and the discharge outlet 42 with the smaller-sized end, and be conveyed in the heating section 4 with the larger-sized end. Thus, on the basis of reducing the opening sizes of the feed inlet 41 and the discharge outlet 42, the material carrying capacity of the heating section 4 can be increased, and the thermal energy utilization rate can be improved;

[0066] Sealed hatch doors that can be opened and closed are provided at the positions of the feed inlet 41 and the discharge outlet 42. In this embodiment, during the time when no feeding or discharging is carried out at the feed inlet 41 and the discharge outlet 42, the airtightness of the heating section 4 can be improved by closing the sealed hatch doors, further avoiding heat loss inside the heating section 4 and reducing energy. At this time, not only can the heat in the heating section 4 be prevented from flowing out through the feed inlet 41 and the discharge outlet 42, but also the heat can be prevented from flowing into the cooling section 5 from the discharge outlet 42, reducing the cooling burden of the cooling section 5. In addition, since the feed inlet 41 and the discharge outlet 42 adopt a minimized size design, the heat loss amount of the heating section 4 and the low-temperature loss rate of the cooling section 5 when the feed inlet 41 and the discharge outlet 42 are in the open state can be reduced. At the same time, the mutual interference between the heating section 4 and the cooling section 5 can be reduced, thereby reducing energy consumption. In addition, due to the design of the upstream sagger transfer platform 43 and the downstream sagger transfer platform 44, the feeding speed of the feed inlet 41 and the discharging speed of the discharge outlet 42 can also be increased, which can greatly reduce the opening time of the sealed hatch doors, further reducing the heat loss amount at the feed inlet 41 and the discharge outlet 42 and further reducing energy consumption. That is, in this embodiment, by reducing the sizes of the feed inlet 41 and the discharge outlet 42, reducing the heat flow rate aperture when opened, reducing the number of air leakage points when closed, and reducing the opening time of the sealed hatch doors by increasing the material inlet and outlet speed, the heat loss amount in the heating section 4 is reduced in three aspects, thereby reducing energy consumption.

[0067] In one embodiment, the discharge outlet 42 is connected to the cooling section 5, and a second pushing mechanism 47 for pushing the sagger 9 on the downstream sagger transfer platform 44 from the discharge outlet 42 into the cooling section 5 is provided at the downstream end of the heating section 4; this realizes the pushing of the sagger 9 on the downstream sagger transfer platform 44 into the cooling section 5.

[0068] A feed vacuum chamber 3 is also provided between the feed inlet 41 and the feed section 2, and a discharge vacuum chamber 6 is provided between the cooling section 5 and the sagger discharging and feeding section 1.

[0069] Both opposite ends of the feed vacuum chamber 3 and the discharge vacuum chamber 6 are provided with openings, and furnace doors are provided at both openings. In addition, a vacuum pumping device and a protective gas injection device are provided on the feed vacuum chamber 3 and the discharge vacuum chamber 6, which can evacuate air before the sagger 9 and the material enter the heating section 4 to avoid oxidation during the firing process. When the sagger 9 and the material enter the sagger discharging and loading section 1 from the cooling section 5, the exhaust gas can be evacuated through the vacuum pumping device.

[0070] In one embodiment, the conveying directions of the saggers in the cooling section 5 and the sagger discharging and loading section 1 are perpendicular to each other. At this time, the sagger discharging and loading section 1 is parallel to the heating section 4, that is, the heating section 4, the cooling section 5, the sagger discharging and loading section 1 and the feeding section 2 are integrally combined to form a "mouth" - shaped structure;

[0071] An outlet vacuum chamber 6 and a sagger transfer device 7 are sequentially arranged between the cooling section 5 and the sagger discharging and loading section 1, wherein the sagger transfer device 7 is used to transfer the sagger 9 in the outlet vacuum chamber 6 to the sagger discharging and loading section 1;

[0072] Openings are provided at both opposite ends of the outlet vacuum chamber 6. A first furnace door 61 is provided at one opening, and a second furnace door 62 for connecting and isolating the outlet vacuum chamber 6 and the cooling section 5 is provided at the other opening; Preferably, a moving platform is arranged in the outlet vacuum chamber 6 for carrying the sagger 9 to stay and slide in the outlet vacuum chamber 6;

[0073] The sagger transfer device 7 includes a first furnace door discharging mechanism 71 and a second furnace door feeding mechanism 72;

[0074] The first furnace door discharging mechanism 71 is used to move the sagger 9 into the outlet vacuum chamber 6 from the opening on the side of the first furnace door 61 when the first furnace door 61 is opened and the second furnace door 62 is closed;

[0075] The second furnace door feeding mechanism 72 includes a second linear driving mechanism 721, a connecting rod 722 arranged at the output end of the second linear driving mechanism 721, and a sagger pulling block 723 arranged at the end of the connecting rod 722. A sliding hole 611 is provided on the first furnace door 61. Preferably, a sealing flange 612 is provided on the first furnace door 61 at the position of the sliding hole 611. The connecting rod 722 is slidably and sealed on the first furnace door 61 through the sealing flange 612. The connecting rod 722 is slidably arranged on the sliding hole 611 and the sagger pulling block 723 is located inside the first furnace door 61. The second linear driving mechanism 721 is used to drive the sagger pulling block 723 to move in the outlet vacuum chamber 6 when the first furnace door 61 is closed and the second furnace door 62 is opened, and move the sagger 9 in the cooling section 5 into the outlet vacuum chamber 6 from the opening on the side of the second furnace door 62. In this embodiment, continuous blanking operation can be completed with the cooling section 5 always in a sealed state.

[0076] The sagger 9 is moved into the discharging vacuum chamber 6 from the opening on the side of the second furnace door 62 to convey the sagger 9 in the furnace of the cooling section 5 onto the discharging vacuum chamber 6, completing the discharging of the cooling section 5. During the process of moving the sagger 9 from the opening on the side of the second furnace door 62 into the discharging vacuum chamber 6, the first furnace door 61 is in the closed state, thus ensuring that the cooling section 5 is also in a sealed state and preventing external gas from flowing into the cooling section 5. In addition, the second furnace door feeding mechanism 72 is arranged on one side of the first furnace door 61, far away from the second furnace door 62 and the cooling section 5. On the one hand, it is convenient for the configuration, assembly and maintenance of the second furnace door feeding mechanism 72. On the other hand, the operation process of the entire second furnace door feeding mechanism 72 will not affect the transfer of the sagger 9 between the discharging vacuum chamber 6 and the cooling section 5, nor affect the opening and closing of the second furnace door 62. On the other hand, the driving part of the second furnace door feeding mechanism 72, the second linear driving mechanism 721, is located outside the discharging vacuum chamber 6, far away from the harsh environment in the discharging vacuum chamber 6 and the cooling section 5. Thus, the performance requirements of the second linear driving mechanism 721 can be reduced, the cost can be reduced, and the service life of the second linear driving mechanism 721 can be increased.

[0077] By providing the discharging vacuum chamber 6 with two furnace doors and the second furnace door feeding mechanism 72, the second furnace door feeding mechanism 72 can realize the discharging operation of the cooling section 5 under a sealed state all the time, thus avoiding the loss of cooling capacity of the cooling section 5.

[0078] The installation position of the second furnace door feeding mechanism 72 is convenient for the configuration, assembly and maintenance of the second furnace door feeding mechanism 72 on the one hand. On the other hand, the operation process of the entire second furnace door feeding mechanism 72 will not affect the transfer of the sagger 9 between the discharging vacuum chamber 6 and the cooling section 5, nor affect the opening and closing of the second furnace door 62. On the other hand, the driving part of the second furnace door feeding mechanism 72, the second linear driving mechanism 721, is located outside the discharging vacuum chamber 6, far away from the harsh environment in the discharging vacuum chamber 6 and the cooling section 5. Thus, the performance requirements of the second linear driving mechanism 721 can be reduced, the cost can be reduced, and the service life of the second linear driving mechanism 721 can be increased.

[0079] In the second furnace door feeding mechanism 72, the connecting rod 722 is in sliding fit with the sliding hole 611. On the one hand, it can enable the connecting rod 722 to move synchronously with the opening and closing of the first furnace door 61, maintaining their relative positions. On the other hand, the sliding hole 611 can also serve as an intermediate support structure for the connecting rod 722, changing the originally cantilever-structured connecting rod 722 into a two-point support structure. During the material pulling operation, it changes to a three-point support structure where the end of the connecting rod 722 is connected to the material, the middle is slidably connected to the sliding hole 611, and the other end is fixedly connected to the output end of the second linear driving mechanism 721, thereby improving the structural stability of the connecting rod 722 in all states. That is, the first furnace door 61 not only serves as a furnace door but also as a support and guiding structure for the connecting rod 722. In addition, the connecting rod 722 can also supplement the sliding hole 611 to ensure the sealing performance of the first furnace door 61, guarantee the sealing effect of the first furnace door 61, and enable material pulling when the first furnace door 61 is in the closed state.

[0080] In a specific embodiment, a material fitting mechanism is provided on the sagger pulling block 723. The material fitting mechanism is used to connect the sagger pulling block 723 to the sagger 9, and then pull the sagger 9 into the discharging vacuum chamber 6. That is, the material fitting mechanism is used to complete the detachable connection between the sagger pulling block 723 and the sagger 9, facilitating the pulling of the sagger 9 from the cooling section 5 into the discharging vacuum chamber 6.

[0081] In one of the embodiments, the material fitting mechanism includes a fitting block 7231 and a fitting block driving mechanism 7232;

[0082] The fitting block 7231 is movably arranged on the sagger pulling block 723, and a mating groove 911 is correspondingly provided on the sagger 9. The movement of the fitting block 7231 can enable the fitting block 7231 to be embedded into the mating groove 911 to complete the connection between the sagger pulling block 723 and the sagger 9, or enable the fitting block 7231 to be disengaged from the mating groove 911 to complete the separation between the sagger pulling block 723 and the sagger 9;

[0083] The fitting block driving mechanism 7232 includes a transmission mechanism, a driving rod 72321, and a driving mechanism 72322. The driving mechanism 72322 is arranged on the output end of the second linear driving mechanism 721. One end of the driving rod 72321 is connected to the driving mechanism 72322, and the other end extends into the inner side of the first furnace door 61 through the sliding hole 611 and is connected to the transmission mechanism;

[0084] The driving mechanism 72322 drives the driving rod 72321 to act, and the driving rod 72321 drives the transmission mechanism to drive the fitting block 7231 to move. In this embodiment, the driving mechanism 72322 of the fitting block driving mechanism 7232 is arranged outside the discharge vacuum chamber 6, away from the harsh environment in the discharge vacuum chamber 6 and the cooling section 5, thereby reducing the performance requirements of the driving mechanism 72322, reducing costs, and also increasing the service life of the driving mechanism 72322.

[0085] In a specific embodiment, the sagger pulling block 723 further includes an abutting plate 7233, and the abutting plate 7233 is directly fixed to the end of the connecting rod 722. Thus, the abutting plate 7233 can move by the driving of the second linear driving mechanism 721, and then can be positioned with the sagger 9. After the abutting plate 7233 abuts against the sagger 9, the fitting block 7231 is aligned with the mating groove 911, facilitating the connection between the sagger pulling block 723 and the sagger 9.

[0086] The fitting block 7231 is slidably arranged on the abutting plate 7233 or the connecting rod 722. The transmission mechanism preferably adopts a gear 72323 and a rack 72324. The rack 72324 is fixed on the upper fitting block 7231, and the gear 72323 is fixed on the driving rod 72321. The driving mechanism 72322 is a rotational driving mechanism for driving the driving rod 72321 to rotate. The rotation of the driving rod 72321 drives the gear 72323 to rotate, and the gear 72323 drives the rack 72324 to move linearly, thereby driving the fitting block 7231 to slide linearly to complete the cooperation and separation with the sagger 9. It should be noted that the transmission mechanism can also adopt a chain drive or a worm and worm gear transmission method, etc., which is specifically selected according to actual needs.

[0087] In one of the preferred embodiments, when the fitting block driving mechanism 7232 drives the fitting block 7231 to fit onto the mating groove 911 of the sagger 9, the abutting plate 7233 abuts against the side wall of the sagger 9. At this time, the abutting plate 7233 and the fitting block 7231 can clamp the sagger 9, thereby realizing the double fixation of the sagger 9. When the sagger 9 is heavy and the sliding plane of the moving platform in the discharge vacuum chamber 6 is smooth, inertial slippage during the pushing and pulling of the sagger 9 can be effectively avoided, improving the pushing stability.

[0088] In one of the embodiments, the second furnace door feeding mechanism 72 further includes a first furnace door opening and closing mechanism 73, and the first furnace door 61 is arranged at the output end of the first furnace door opening and closing mechanism 73;

[0089] The moving direction of the first furnace door opening and closing mechanism 73 is parallel to the moving direction of the second linear driving mechanism 721. In this embodiment, the opening and closing direction of the first furnace door 61 is the same as the moving direction of the connecting rod 722. At this time, the opening and closing actions of the first furnace door 61 will not affect the second furnace door feeding mechanism 72, and the actions of the second furnace door feeding mechanism 72 will not affect the opening and closing of the first furnace door 61. Preferably, the moving directions of the second linear driving mechanism 721 and the first furnace door opening and closing mechanism 73 are parallel to the axis of the discharge vacuum chamber 6;

[0090] The sagger transfer device 7 further includes a bracket 74 and a support table 75 movably arranged on the bracket 74 along the X direction; preferably, the movement of the support table 75 is automatic rather than manual. Specifically, an X-direction driving member is arranged on the bracket 74, and the output end of the X-direction driving member is connected to the support table 75 to drive the support table 75 to move along the X direction;

[0091] The first furnace door opening and closing mechanism 73 and the second linear driving mechanism 721 are arranged on the support table 75, and both the first furnace door opening and closing mechanism 73 and the second linear driving mechanism 721 move along the Y direction; that is, the first furnace door opening and closing mechanism 73 and the second linear driving mechanism 721 will move synchronously with the support table 75;

[0092] The first furnace door discharging mechanism 71 includes a sagger carrying table 711 arranged on the support table 75 and a sagger pulling member 712 movably arranged on the sagger carrying table 711 along the Y direction; wherein the sagger carrying table 711 is used to carry the sagger 9, and the sagger pulling member 712 is used to pull the sagger 9 located in the discharge vacuum chamber 6 along the Y direction onto the sagger carrying table 711 when the first furnace door 61 is opened and the second furnace door 62 is closed, thereby completing the discharging of the sagger 9 at the position of the first furnace door 61 of the discharge vacuum chamber 6;

[0093] The Y direction is parallel to the axis of the discharge vacuum chamber 6, and the X direction is perpendicular to the Y direction, that is, the Y direction is consistent with the conveying direction of the cooling section 5, and the X direction is consistent with the conveying direction of the sagger discharging and loading section 1. In this embodiment, the actions of the first furnace door discharging mechanism 71 and the opening and closing operations of the first furnace door 61 are linked through the support table 75. That is, when the support table 75 is moved so that the sagger carrying table 711 in the first furnace door discharging mechanism 71 is aligned with the discharge vacuum chamber 6, the first furnace door 61 synchronously moves away from the opening of the discharge vacuum chamber 6 to make room for the sagger carrying table 711. When the first furnace door 61 is aligned with the opening of the discharge vacuum chamber 6, the sagger carrying table 711 returns to its initial position. At this time, it is convenient to transfer the sagger 9 to the next working station (discharging device 8). In this way, the discharging of the sagger 9, the opening and closing of the first furnace door 61, the first furnace door 61 moving away to expose the opening of the discharge vacuum chamber 6, and the alignment of the sagger 9 with the opening of the discharge vacuum chamber 6 can be carried out synchronously, which can improve the discharging efficiency.

[0094] The kiln cycle production line further includes a blanking device 8 provided on one side of the bracket 74;

[0095] The blanking device 8 includes a conveying mechanism 81 and a material pulling mechanism 82. The conveying mechanism 81 is a belt conveyor, a roller conveyor or a plate conveyor. The conveying mechanism 81 can convey the sagger 9 and the materials fired and cooled in the sagger 9 to the sagger conveying line 11. The material pulling mechanism 82 is used to move the sagger 9 from the sagger bearing table 711 to the conveying mechanism 81.

[0096] In a preferred embodiment, the first furnace door discharging mechanism 71 further includes a first linear driving mechanism 714 for driving the sagger pulling member 712 to move. The first linear driving mechanism 714 is arranged below the sagger bearing table 711. At this time, a chute 7111 is provided on the sagger bearing table 711. The sagger pulling member 712 is connected to the first linear driving mechanism 714 through a connecting plate 713. The sagger pulling member 712 is arranged above the sagger bearing table 711. The connecting plate 713 is slidably arranged on the chute 7111. In this embodiment, the structural compactness of the first furnace door discharging mechanism 71 can be improved; and the sagger pulling member 712 is provided with a fitting member that can be actively controlled and is used to fit with the mating groove 911 on the sagger 9.

[0097] The above is only this embodiment and does not impose any limitation on the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes, modifications or equivalents to equivalent embodiments by using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A kiln circulation production line, characterized in that: It comprises a feeding section (2), a heating section (4), a cooling section (5) and a sagger unloading and loading section (1) which are arranged end to end in sequence; The sagger unloading and loading section (1) comprises a sagger cover conveying line (16), a sagger body conveying line (11), and a cover removing mechanism (12), a unloading mechanism (13), a loading mechanism (14) and a cover closing mechanism (15) which are sequentially arranged on the sagger body conveying line (11); one end of the sagger cover conveying line (16) is connected to the cover removing mechanism (12), and the other end is connected to the cover closing mechanism (15).

2. The kiln circulation production line according to claim 1, characterized in that: The box cover conveying line (16) and the box body conveying line (11) are parallel to each other.

3. The kiln circulation production line according to claim 1, characterized in that: The sagger (9) is sequentially transported in the feeding section (2), the heating section (4), the cooling section (5) and the sagger unloading and loading section (1) to undergo various processing steps, and the sagger transport directions of the heating section (4), the feeding section (2) and the cooling section (5) are perpendicular.

4. The kiln circulation production line according to claim 3, characterized in that: A roller conveying mechanism (48) is provided in the heating section (4), and the sagger (9) is conveyed from the upstream to the downstream of the heating section (4) via the roller conveying mechanism (48); An upstream sagger transfer platform (43) is provided at the upstream end of the roller conveying mechanism (48) in the heating section (4), and a downstream sagger transfer platform (44) is provided at the downstream end; The heating section (4) is provided with a first pushing mechanism (45) at the upstream end and a first pulling mechanism (46) at the downstream end.

5. The kiln circulation production line according to claim 4, characterized in that: The roller conveying mechanism (48) has N1 conveying rollers (481) with overrunning structures at both the upstream and downstream ends; The total interval between N1 conveying rollers (481) with a transcending structure is longer than or equal to the width of the sagger (9), and N1≥2.

6. The kiln circulation production line according to claim 4, characterized in that: The heating section (4) is provided with a feed inlet (41) on the side of the upstream sagger transfer platform (43), and is provided with a discharge outlet (42) on the side of the downstream sagger transfer platform (44); The feed port (41) and the discharge port (42) are provided with sealed doors that can be opened and closed.

7. The kiln circulation production line according to claim 6, characterized in that: The discharge port (42) is connected to the cooling section (5), and a second pushing mechanism (47) is provided at the downstream end of the heating section (4) for pushing the sagger (9) of the downstream sagger transfer platform (44) from the discharge port (42) into the cooling section (5); A feeding vacuum bin (3) is also provided between the feeding port (41) and the feeding section (2), and a discharging vacuum bin (6) is provided between the cooling section (5) and the sagger unloading and loading section (1).

8. The kiln circulation production line according to any one of claims 1 to 7, characterized in that: The cooling section (5) and the sagger conveying directions of the sagger unloading and loading section (1) are perpendicular to each other; A discharge vacuum bin (6) and a sagger transfer device (7) are sequentially arranged between the cooling section (5) and the sagger unloading and loading section (1); The discharge vacuum bin (6) is provided with openings at opposite ends, one of the openings is provided with a first furnace door (61), and the other opening is provided with a second furnace door (62) for connecting and isolating the discharge vacuum bin (6) and the cooling section (5); The sagger transfer device (7) comprises a first furnace door discharging mechanism (71) and a second furnace door feeding mechanism (72); The first furnace door discharge mechanism (71) is used to move the sagger (9) from the opening on the side of the first furnace door (61) into the discharge vacuum bin (6) when the first furnace door (61) is open and the second furnace door (62) is closed; The second furnace door feeding mechanism (72) comprises a second linear drive mechanism (721), a connecting rod (722) arranged at the output end of the second linear drive mechanism (721), and a sagger pulling block (723) arranged at the end of the connecting rod (722); a sliding hole (611) is arranged on the first furnace door (61); the connecting rod (722) is slidably arranged on the sliding hole (611) and the sagger pulling block (723) is located on the inner side of the first furnace door (61); the second linear drive mechanism (721) is used for driving the sagger pulling block (723) to move in the discharge vacuum bin (6) when the first furnace door (61) is closed and the second furnace door (62) is opened, so as to move the sagger (9) in the cooling section (5) from the opening on the side of the second furnace door (62) into the discharge vacuum bin (6).

9. The kiln circulation production line according to claim 8, characterized in that: The second furnace door feeding mechanism (72) further comprises a first furnace door opening and closing mechanism (73), and the first furnace door (61) is arranged at an output end of the first furnace door opening and closing mechanism (73); The moving direction of the first furnace door opening and closing mechanism (73) is parallel to the moving direction of the second linear drive mechanism (721); The sagger transfer device (7) further comprises a bracket (74) and a support platform (75) arranged on the bracket (74) and movable along the X direction; The first furnace door opening and closing mechanism (73) and the second linear drive mechanism (721) are arranged on a support platform (75), and the first furnace door opening and closing mechanism (73) and the second linear drive mechanism (721) both move along the Y direction; The first furnace door discharging mechanism (71) comprises a sagger bearing platform (711) arranged on a support platform (75) and a sagger pulling member (712) movable on the sagger bearing platform (711) along a Y direction; The Y direction is parallel to the axis of the discharge vacuum bin (6), and the X direction is perpendicular to the Y direction; It also includes a material discharge device (8) arranged on one side of the bracket (74); The unloading device (8) comprises a conveying mechanism (81) and a material pulling mechanism (82), wherein the material pulling mechanism (82) is used to move the sagger (9) from the sagger bearing platform (711) to the conveying mechanism (81).

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