Continuous furnace

Abstract

The utility model belongs to the field of continuous furnaces, and particularly relates to a continuous furnace which comprises a feeding section, a heating section, a heat insulation section, a cooling section and a discharging section which are sequentially arranged. The heat insulation section comprises a front heat insulation section and a rear heat insulation section which are sequentially arranged, a heat insulation door is arranged between the front heat insulation section and the rear heat insulation section, the heat insulation section further comprises a material pushing / pulling device, the material pushing / pulling device is used for transferring materials from the front heat insulation section to the rear heat insulation section, and the material pushing / pulling speed of the material pushing / pulling device is higher than the material conveying speed in the heating section. According to the continuous furnace, on the basis that the heating section and the cooling section are linearly arranged, the conveying efficiency is high, and a turning switching device is not needed, the heat insulation section is additionally arranged, so that mutual interference of the heating section and the cooling section can be avoided, and the conveying efficiency of materials entering the cooling section from the heating section can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of continuous furnaces, in particular to a continuous furnace. Background Art

[0002] Roller kiln is a sintering equipment that can be used for continuous sintering of raw ceramics, bricks and tiles, electrode materials, etc. Taking the roller kiln with protective atmosphere as an example, its basic working principle is: using rollers as a power source, the materials to be sintered are continuously fed into a closed furnace body composed of multiple standard sections, and after high-temperature sintering, they are taken out of the furnace and enter the next process. Roller kiln has the advantages of high automation, uniform temperature, short firing cycle, and stable operation.

[0003] At present, the constant temperature section and cooling section of the traditional atmosphere roller kiln are interconnected, and the high-temperature gas generated in the constant temperature section directly enters the cooling section, resulting in a large heat loss. For this problem, the conventional solution is to set one or two insulating doors between the constant temperature section and the cooling section for insulation. For example, the Chinese patent "CN212566828U-A tunnel kiln for refractory materials" solves the above problem by setting an insulating door between the insulating section and the cooling section. However, this method is used in a roller kiln where the material moves slowly on the roller conveyor mechanism. It often takes a long time for the material to pass through the insulating door, and the effect of the insulating door is extremely limited. With the method of setting up two insulated doors, the material can enter between the two insulated doors. Before the material enters the two insulated doors, the insulated door near one end of the heating section is opened, and the insulated door near one end of the cooling section is closed, until the material completely enters the two insulated doors. At this time, the insulated door near one end of the heating section is closed, and the insulated door near one end of the cooling section is opened. Although this method can completely separate the constant temperature section and the cooling section, there will still be some heat and cold that interfere with each other within the range of the two insulated doors, and the insulation effect is still general. It will also affect the effective working length of the cooling section of the heating section, thereby resulting in low utilization of the continuous furnace. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a continuous furnace which can reduce energy consumption and ensure the overall utilization rate of the continuous furnace.

[0005] The utility model provides a continuous furnace, comprising a feeding section, a heating section, a heat insulation section, a cooling section and a discharging section which are arranged in sequence;

[0006] The insulation section includes an insulation front section and an insulation rear section which are arranged in sequence, an insulation door is arranged between the insulation front section and the insulation rear section, and the insulation section also includes a material push / pull device, which is used to transfer materials from the insulation front section to the insulation rear section, and the material push / pull speed of the material push / pull device is faster than the material conveying speed in the heating section.

[0007] Furthermore, both the heat-insulated front section and the heat-insulated rear section use unpowered roller conveyors to transport materials;

[0008] Alternatively, the heat-insulating rear section includes a bearing platform and conveying rollers arranged in sequence, and the material push / pull device drives the material from the heat-insulating front section into the bearing platform and then into the conveying rollers for conveying.

[0009] Furthermore, the material push / pull device comprises a first linear drive mechanism and a push / pull block, the push / pull block is hingedly arranged at the output end of the first linear drive mechanism, and the rotation angle of the push / pull block is between 0° and 90° relative to the push / pull output stroke direction of the first linear drive mechanism, and an elastic member that makes the push / pull block at a 90° position is also arranged at the hinge between the push / pull block and the output end of the first linear drive mechanism;

[0010] The first linear drive mechanism is arranged at the heat-insulating front section or the heat-insulating rear section, and the output end of the first linear drive mechanism is arranged toward the heat-insulating rear section or the heat-insulating front section.

[0011] Furthermore, a material correction mechanism is provided on the heating section. After the material passes through the material correction mechanism, the side surface of the material is located between the end of the push / pull block and the first linear drive mechanism when the material is at the 90° position.

[0012] Furthermore, a feed port is provided on one side of the heating section perpendicular to the material conveying direction of the heating section, and the feed section includes a feed device connected to the feed port;

[0013] The feeding device includes a feeding bracket, a sliding frame, a roller conveying mechanism and a pushing mechanism. The pushing mechanism is arranged toward the feeding port, the feeding bracket is arranged between the feeding port and the pushing mechanism, the sliding frame is slidingly arranged on the feeding bracket, and the roller conveying mechanism is arranged on the sliding frame. When the sliding frame moves, the roller conveying mechanism is switched to align with or leave the feeding port.

[0014] Furthermore, the feed section also includes a replacement bin arranged between the feed port and the feed support, one side of the replacement bin is connected to the feed port and is provided with a first bin door, and the other end of the replacement bin is provided with a second bin door.

[0015] Furthermore, the feeding device also includes a second bin door feeding mechanism arranged in parallel on the sliding frame, the second bin door feeding mechanism includes a second linear drive mechanism and a third linear drive mechanism arranged parallel to each other on the sliding frame, the second bin door is arranged on the output end of the second linear drive mechanism, the second bin door is provided with a sliding hole, and the output end of the third linear drive mechanism is provided with a push rod, the push rod is slidably arranged in the sliding hole and passes through the second bin door.

[0016] Furthermore, the feeding device also includes a second bin door feeding mechanism arranged in parallel on the sliding frame, the second bin door feeding mechanism includes a second linear drive mechanism and a push rod arranged on the sliding frame, the second bin door is arranged on the output end of the second linear drive mechanism, a sliding hole is arranged on the second bin door, the push rod is slidably arranged on the sliding frame and the sliding hole, and one end of the push rod passes through the second bin door, and the sliding direction of the push rod is parallel to the output direction of the second linear drive mechanism;

[0017] The second bin door feeding mechanism also includes an elastic reset member driving the push rod to be located near the side of the pushing mechanism. When the second bin door feeding mechanism is located between the pushing mechanism and the opening on the second bin door side of the replacement bin, the pushing mechanism can push the push rod to slide.

[0018] Furthermore, the discharging section includes a discharging assembly and a discharging conveyor arranged at the outlet of the cooling bin of the cooling section, a third bin door is arranged downstream of the cooling bin, and the discharging assembly includes a fork mechanism and a transition conveyor;

[0019] The material forking mechanism comprises a fourth linear drive mechanism and two fork arms arranged on the output end of the fourth linear drive mechanism, and the fourth linear drive mechanism drives the fork arms to extend into the cooling bin through the third bin door to receive the material;

[0020] The transition conveyor includes a lifting mechanism I and a roller conveyor I arranged on the conveying end of the lifting mechanism I, and the roller conveyor I is located between two fork arms;

[0021] After the fork arm receives the material from the cooling bin and resets, the lifting mechanism I drives the roller conveyor I to rise, receive the material and transport it to the discharge conveyor.

[0022] The beneficial effect of the utility model is that the continuous furnace provided by the utility model retains the heating section and the cooling section arranged in a straight line, has high conveying efficiency, and does not require a turning switching device. By adding an insulation section, the mutual interference between the heating section and the cooling section can be avoided, and the conveying efficiency of the material from the heating section to the cooling section can be greatly improved. Moreover, the insulation section only needs to be equipped with an insulation door and a material push / pull device. The material is still being fired at a constant temperature in the insulation front section, and begins to cool down when entering the insulation rear section. In this way, compared with the insulation method of setting two insulation doors, the heating and cooling time of the material can be increased, thereby increasing the firing time of the material, thereby shortening the length of the heating section and the cooling section, and ensuring the compactness of the continuous furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 It is a top view of the utility model;

[0024] Attached Figure 2 It is the front view of the utility model;

[0025] Attached Figure 3 It is a left view of the utility model;

[0026] Attached Figure 4 It is a front cross-sectional view of the heat insulation section of the utility model (the material push / pull device is arranged in the heat insulation rear section and used as a material pulling device);

[0027] Attached Figure 5 For attachment Figure 4 A partial enlarged view of the middle A;

[0028] Attached Figure 6 For attachment Figure 5 A partial enlarged view of point B in the middle;

[0029] Attached Figure 7 For attachment Figure 6 Bottom view of

[0030] Attached Figure 8 For attachment Figure 6 A bottom view of another embodiment (the material push / pull device is arranged in the front section of the heat insulation and used as a material push device);

[0031] Attached Fig. 9 It is a rear view of the cooling bin and the discharging section of the utility model;

[0032] Attached Fig.10 For attachment Fig. 9 CC section view.

[0033] In the figure, 1-feeding device; 11-feeding bracket; 12-sliding frame; 13-second bin door feeding mechanism; 131-second linear drive mechanism; 132-third linear drive mechanism; 14-roller conveying mechanism; 15-pushing mechanism; 2-replacement bin; 21-first bin door; 22-second bin door; 221-sliding hole; 3-second pushing device; 4-heating section; 41-material correction mechanism; 42-roller conveying device; 5-insulated front section; 6-insulated rear section; 7-cooling section; 71-cooling bin; 71 1-third bin door; 712-transmission roller assembly; 713-lifting mechanism II; 8-discharging section; 81-air curtain assembly; 82-discharging assembly; 821-fork mechanism; 8211-fourth linear drive mechanism; 8212-fork arm; 822-transition conveyor; 8221-lifting mechanism I; 8222-roller conveyor I; 83-discharging conveyor; 84-top material assembly; 9-insulated door; 10-material push / pull device; 101-first linear drive mechanism; 102-push / pull block; 103-elastic member. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] As attached Figure 1 -Attached Fig.10As shown, the utility model provides a continuous furnace, comprising a feeding section, a heating section 4, a heat insulation section, a cooling section 7 and a discharging section 8 which are arranged in sequence. The material enters the heating section 4 from the feeding section for high-temperature firing, then enters the cooling section 7 through the heat insulation section for cooling, and finally is discharged from the discharging section 8. Preferably, the heating section 4, the heat insulation section and the cooling section 7 are arranged in a straight line, so that the material can always move in one direction without turning. On the one hand, the material conveying efficiency can be improved, and on the other hand, the material conveying amount of the heating section 4 and the cooling section 7 can be guaranteed. On the other hand, the result can be simplified. By setting the heat insulation section, the heating section 4 and the cooling section 7 which are arranged in a straight line can be prevented from interfering with each other, and the problem of the heating section and the cooling section being interconnected in the traditional atmosphere track kiln can be avoided, so that the high-temperature gas generated by the heating section directly enters the cooling section, resulting in a great heat loss and a waste of energy.

[0040] Specifically, the insulation section includes an insulation front section 5 and an insulation rear section 6 which are arranged in sequence, and an insulation door 9 is arranged between the insulation front section 5 and the insulation rear section 6. The insulation door 9 is used to separate and connect the insulation front section 5 and the insulation rear section 6. The insulation door 9 is preferably arranged vertically, so that during the opening and closing process of the insulation door 9, it will not affect the transportation of materials in the insulation front section 5 and the insulation rear section 6. The insulation section also includes a material pushing / pulling device 10, which is used to transfer materials from the insulation front section 5 to the insulation rear section 6, and the material pushing / pulling speed of the material pushing / pulling device 10 is faster than the material transportation speed in the heating section 4. When the continuous kiln is firing and cooling materials, the materials need sufficient heating time, and the length of the heating section 4 and the cooling section 7 is limited. Therefore, the material conveying speed in the heating section 4 and the cooling section 7 is generally very slow. The material usually takes more than ten hours to pass through the furnace, and is conveyed at a speed of 0.5 m / h or even lower. At this time, when there is no material pushing / pulling device 10, it takes tens of minutes or more than an hour for the material to pass through the insulating door 9, and the insulating effect of the insulating door 9 is minimal. The utility model can greatly shorten the opening time of the insulating door 9 by arranging a material pushing / pulling device 10 and transferring the material from the insulating front section 5 to the insulating rear section 6 at a speed faster than the material conveying speed in the heating section 4.

[0041] The continuous furnace provided by the utility model retains the straight-line arrangement of the heating section 4 and the cooling section 7, has high conveying efficiency, and does not require a turning switching device. By adding an insulation section, the mutual interference between the heating section 4 and the cooling section 7 can be avoided, and the conveying efficiency of the material from the heating section 4 to the cooling section 7 can be greatly improved. Moreover, the insulation section only needs to be equipped with an insulation door 9 and a material push / pull device 10. The material is still being fired at a constant temperature in the insulation front section 5, and begins to cool down when entering the insulation rear section. In this way, compared with the insulation method of setting two insulation doors, the heating and cooling time of the material can be increased, thereby increasing the firing time of the material, thereby shortening the length of the heating section 4 and the cooling section 7, and ensuring the compactness of the continuous furnace.

[0042] In one embodiment, both the heat-insulating front section 5 and the heat-insulating rear section 6 use unpowered rollers to convey materials. In this embodiment, the material conveying structure in the heat-insulating section can be simplified, and the material can move smoothly in the heat-insulating front section 5 and the heat-insulating rear section 6;

[0043] In another embodiment, the heat-insulating rear section 6 includes a bearing platform and conveying rollers arranged in sequence. In this case, the material conveying method of the heat-insulating front section 5 is not limited. The material push / pull device 10 drives the material from the heat-insulating front section 5 to the bearing platform and then to the conveying roller for conveying. At this time, the material push / pull speed of the material push / pull device 10 can be further improved, and the opening time of the heat-insulating door 9 can be further shortened. Specifically, the material is normally conveyed in the heat-insulating front section 5, and then the material push / pull device 10 transfers the material from the heat-insulating front section 5 to the bearing platform. At this time, since the material and the bearing platform are frictionally slidable, inertial slip caused by the excessive transportation speed of the material is avoided. Then the material push / pull device 10 transfers the material from the bearing platform to the conveying roller for normal conveying. This embodiment solves the problem of speed limitation caused by inertial slip when the material runs too fast on the conveying roller. Preferably, the bearing platform is made of graphite material, which has good high temperature resistance, wear resistance and self-lubricating properties.

[0044] In one embodiment, the material push / pull device 10 includes a first linear drive mechanism 101 and a push / pull block 102, the push / pull block 102 is hingedly arranged at the output end of the first linear drive mechanism 101, the first linear drive mechanism 101 is used to drive the push / pull block 102 to move linearly and reciprocatingly, and the push / pull block 102 can rotate at the output end of the first linear drive mechanism 101, and the rotation angle of the push / pull block 102 relative to the push / pull output stroke direction of the first linear drive mechanism 101 is between 0°-90°, that is, when the material push / pull device 10 is used as a material pulling device, the rotation angle of the push / pull block 102 relative to the pull output stroke direction of the first linear drive mechanism 101 (the moving direction of the material in the heating section 4) is between 0°-90°; when the material push / pull device 10 is used as a material pushing device, the rotation angle of the push / pull block 102 relative to the push output stroke direction of the first linear drive mechanism 101 (the moving direction of the material in the heating section 4) is between 0°-90°;

[0045] Preferably, a rotation limiting structure is provided on the hinge structure between the push / pull block 102 and the output end of the first linear drive mechanism 101 for limiting the push / pull block 102 from further rotating in a direction greater than 90°. When at 90°, the push / pull block 102 is perpendicular to the output end of the first linear drive mechanism 101. Restricted by the rotation limiting structure, the push / pull block 102 cannot rotate to an angle greater than 90°. When the material push / pull device 10 is used as a material pulling device, when the push / pull block 102 is at 0°, the push / pull block 102 is tightly attached to the output end of the first linear drive mechanism 101, and the push / pull block 102 will not rotate to an angle less than 0°. When the material push / pull device 10 is used as a material pushing device, the material will push the push / pull block 102 to rotate to a minimum of 0° and will not rotate to an angle less than 0°.

[0046] The hinge between the push / pull block 102 and the output end of the first linear drive mechanism 101 is also provided with an elastic member 103 that enables the push / pull block 102 to be at a 90° position;

[0047] Reference Figure 4 -Attached Figure 7When the material push / pull device 10 is pulling material, the first linear drive mechanism 101 is arranged in the heat-insulating rear section 6, and the output end of the first linear drive mechanism 101 is arranged toward the heat-insulating front section 5. The material pulling output stroke direction of the first linear drive mechanism 101 is the same as the moving direction of the material. The first linear drive mechanism 101 drives the push / pull block 102 to move to the downstream end of the material located in the heat-insulating front section 5. Before the push / pull block 102 contacts the material, the push / pull block 102 is in a 90° state, and during the extension process of the first linear drive mechanism 101, the push / pull block 102 contacts the upstream end of the material. At this time, the push / pull block 102 will rotate due to hitting the material, and the push / pull block 102 will continue to move in contact with the side wall of the material until the push / pull block 102 passes the downstream end of the material. At this time, the elastic member 103 will drive the push / pull block 102 to a 90° state, and then the first linear drive mechanism 101 will reset, and the push / pull block 102 will abut against the downstream end of the material and be restricted by the rotation limit structure and cannot rotate. During the reset process of the first linear drive mechanism 101, the material is pulled to move toward the heat-insulating rear section 6, and then the material is transferred from the heat-insulating front section 5 to the heat-insulating rear section 6 in a material-pulling manner;

[0048] Reference Figure 8 When the material push / pull device 10 is pushing material, the first linear drive mechanism 101 is arranged in the heat-insulating front section 5, and the output end of the first linear drive mechanism 101 is arranged toward the heat-insulating rear section 6. The pushing output stroke direction of the first linear drive mechanism 101 is the same as the moving direction of the material. At this time, the material is transported in the heat-insulating front section 5, and the material push / pull device 10 remains stationary. During the movement of the material, the upstream end of the material will contact the push / pull block 102. At this time, the push / pull block 102 will rotate in the 0° direction due to the collision with the material, and the first linear drive mechanism 1 01 will continue to move in contact with the side wall of the material until the push / pull block 102 passes over the downstream end of the material and leaves the material. At this time, the elastic member 103 will drive the push / pull block 102 to be in a 90° state. Subsequently, the first linear drive mechanism 101 extends, and the push / pull block 102 will abut against the downstream end of the material and cannot rotate due to the restriction of the rotation limit structure. During the extension of the first linear drive mechanism 101, the material is pushed to move, and then the material is transferred from the heat-insulating front section 5 to the heat-insulating rear section 6 in a material-pushing manner. At this time, the push / pull block 102 is used as a material pushing block;

[0049] The material push / pull device 10 provided by the utility model only needs a first linear drive mechanism 101 to complete the pushing / pulling of the material, and there is no need to set any interlocking structure on the material. The material push / pull adaptability is strong, and the overall structure of the entire material push / pull device 10 is simple, and the operation is convenient and fast with low energy consumption. At the same time, it is also adapted to the pushing or pulling of materials, and is suitable for different working conditions. At the same time, it will not occupy too much space of the heat-insulating front section 5 or the heat-insulating rear section 6, and the first linear drive mechanism 101 and the push / pull block 102 can also be located in the same heat-insulating front section 5 or the heat-insulating rear section 6, which can ensure the integrity of the heat-insulating door 9, and then ensure the heat-insulating effect.

[0050] Preferably, the material pushing / pulling device 10 is arranged in the heat-insulating rear section 6 and used as a material pulling device, thereby avoiding the first linear drive mechanism 101 from being in a high temperature environment in the heating section 4, reducing the heat resistance burden of the first linear drive mechanism 101 and improving its service life.

[0051] In one embodiment, a material correction mechanism 41 is provided on the heating section 4. After the material passes through the material correction mechanism 41, the side of the material is located between the end of the push / pull block 102 at the 90° position and the first linear drive mechanism 101. In a preferred embodiment, the material correction mechanism 41 corrects the material in the middle of the heating section 4, so that when the material passes through the material push / pull device 10, the material push / pull device 10 can directly act on the upper and lower ends of the material. Preferably, the material correction mechanism 41 and the material push / pull device 10 are mirror-imaged in two groups on the left and right sides of the furnace cavity to improve the material correction effect and the material push / pull effect.

[0052] In one embodiment, a feed port is provided on one side of the heating section 4 perpendicular to the material conveying direction of the heating section, that is, the feed port is provided on the side of the heating section 4, and the feed section includes a feed device 1 connected to the feed port;

[0053] The feeding device 1 includes a feeding bracket 11, a sliding frame 12, a roller conveying mechanism 14 and a pushing mechanism 15. The pushing mechanism 15 is arranged toward the feeding port. Preferably, the pushing mechanism 15 includes a linear driving mechanism and a pushing block arranged on the conveying end of the linear driving mechanism. The feeding bracket 11 is arranged between the feeding port and the pushing mechanism 15. The sliding frame 12 is slidingly arranged on the feeding bracket 11. The roller conveying mechanism 14 is arranged on the sliding frame 12. The sliding frame 12 moves and switches the roller conveying mechanism 14 to align with or leave the feeding port. When the roller conveying mechanism 14 is aligned with the feeding port, the roller conveying mechanism 14, the feeding port and the pushing mechanism 15 are in a straight line.

[0054] In this embodiment, the roller conveyor mechanism 14 is used to feed the feed bracket 11. Specifically, the roller conveyor mechanism 14 can be fed by hoisting equipment or other conveyor belt mechanisms, and the roller conveyor mechanism 14 can be away from the connection position of the feed port and the push mechanism 15, which can facilitate the feeding of the roller conveyor mechanism 14. In this embodiment, the push mechanism 15 for pushing the material into the feed port is arranged outside the heating section 4, which can avoid the push mechanism 15 being in the high temperature environment of the heating section 4.

[0055] In one embodiment, the feed section further includes a replacement bin 2 disposed between the feed port and the feed bracket 11, one side of the replacement bin 2 is connected to the feed port and is provided with a first bin door 21, and the other end of the replacement bin 2 is provided with a second bin door 22. In this embodiment, the pushing mechanism 15 is disposed toward the opening on the side of the second bin door 22 of the replacement bin 2. In this embodiment, by setting up the replacement bin 2, on the one hand, the material to be introduced into the heating section 4 can be evacuated and filled with inert gas to remove the air on the material, thereby preventing oxygen from entering the heating section 4. On the other hand, the replacement bin 2 can also keep the heating section 4 in a sealed state at all times during the loading stage, thereby ensuring the airtightness of the heating section 4 and reducing heat loss. Specifically, when no material is loaded, the first bin door 21 and the second bin door 22 are both in a closed state, and the two together block the feed port. When the pushing mechanism 15 pushes the material on the roller conveyor mechanism 14 to the replacement bin 2, the second bin door 22 is opened. At this time, the first bin door 21 blocks the feed port to ensure the sealing of the heating section 4. After the material completely enters the replacement bin 2, the second bin door 22 is closed, and evacuation and filling with inert gas are performed in turn. Subsequently, the first bin door 21 is opened, and the material enters the heating section 4 from the replacement bin 2. At this time, the second bin door 22 is in a closed state, thereby ensuring the sealing of the heating section 4.

[0056] In one embodiment, referring to the attached Figure 1 and attached Figure 3The feeding device 1 also includes a second bin door feeding mechanism 13 arranged in parallel on the sliding frame 12, the second bin door feeding mechanism 13 includes a second linear drive mechanism 131 and a third linear drive mechanism 132 arranged on the sliding frame 12 and parallel to each other, the second bin door 22 is arranged on the output end of the second linear drive mechanism 131, the second bin door 22 is provided with a sliding hole 221, and the output end of the third linear drive mechanism 132 is provided with a push rod 133, the push rod 133 is slidably arranged in the sliding hole 221 and passes through the second bin door 22. In this embodiment, the material in the replacement bin 2 is directly pushed into the heating section 4 through the second bin door feeding mechanism 13 located on one side of the second bin door 22, without the need to set a material conveying mechanism in the replacement bin 2 or a material pulling mechanism in the heating section 4, which can greatly simplify the difficulty of transferring the material from the replacement bin 2 to the heating section 4 and reduce the complexity of the mechanism. The second door feeding mechanism 13 is realized by slidingly setting a push rod 133 on the sliding hole 221 on the second door 22. The push rod 133 can make up for the vacancy of the sliding hole 221 to ensure the sealing of the replacement bin 2. On the other hand, the sliding hole 221 can also serve as a support point for the push rod 133 to improve the structural strength and pushing stability of the push rod 133. The third linear drive mechanism 132 driving the push rod 133 and the second linear drive mechanism 131 driving the second door 22 are arranged in parallel, and the two do not affect each other, that is, the setting of the push rod 133 will not affect the opening and closing of the second door 22. In addition, the second door feeding mechanism 13 is directly set on the sliding frame 12, so that one of the second door feeding mechanism 13 and the roller conveyor mechanism 14 can be located between the push mechanism 15 and the opening on the second door 22 side of the replacement bin 2, and the sliding frame 12 is more fully utilized.

[0057] In another embodiment (not shown in the figure), the feeding device 1 also includes a second bin door feeding mechanism 13 arranged in parallel on the sliding frame 12, the second bin door feeding mechanism 13 includes a second linear drive mechanism 131 and a push rod 133 arranged on the sliding frame 12, the second bin door 22 is arranged on the output end of the second linear drive mechanism 131, the second bin door 22 is provided with a sliding hole 221, the push rod 133 is slidably arranged on the sliding frame 12 and the sliding hole 221, and one end of the push rod 133 passes through the second bin door 22, and the sliding direction of the push rod 133 is parallel to the output direction of the second linear drive mechanism 131;

[0058] The second bin door feeding mechanism 13 also includes an elastic reset member driving the push rod 133 to be located near the side of the pushing mechanism 15. The elastic reset member can be set on the second bin door 22 or on the sliding frame 12. When the elastic reset member drives the push rod 133 to be located near the side of the pushing mechanism 15, the end of the push rod 133 is outside the bin body of the replacement bin 2, so that when the sliding frame 12 slides, the push rod 133 will not interfere with the replacement bin 2. When the second bin door feeding mechanism 13 is located between the pushing mechanism 15 and the opening on the second bin door 22 side of the replacement bin 2, the pushing mechanism 15 can push the push rod 133 to slide.

[0059] In this embodiment, the material in the replacement bin 2 is directly pushed into the heating section 4 through the second bin door feeding mechanism 13 located on the side of the second bin door 22, without the need to set up a material conveying mechanism in the replacement bin 2 or a material pulling mechanism in the heating section 4. This can greatly simplify the difficulty of transferring the material from the replacement bin 2 to the heating section 4 and reduce the complexity of the mechanism. The second bin door feeding mechanism 13 is realized by slidingly setting a pushing rod 133 on the sliding hole 221 on the second bin door 22. On the one hand, the pushing rod 133 can make up for the vacancy of the sliding hole 221 to ensure the sealing of the replacement bin 2. On the other hand, the sliding hole 221 can also serve as a supporting point for the pushing rod 133 to improve the structural strength and pushing stability of the pushing rod 133. The driving mechanism for driving the pushing rod 133 to perform the pushing stroke is driven by the pushing block of the pushing mechanism 15. At this time, the pushing mechanism 15 is used to push the material on the roller conveyor mechanism 14 into the replacement bin 2, and is also used to push the pushing rod 133 to push the material in the replacement bin 2 into the heating section 4. A third linear driving mechanism 132 for driving the pushing rod 133 to move can be omitted, further simplifying the structure and reducing the cost. The driving mechanism for driving the pushing rod 133 to perform the reset stroke adopts an elastic reset part, does not require a linear driving mechanism, does not require electric energy drive, and can save energy. In addition, by directly setting the second door feeding mechanism 13 on the sliding frame 12, one of the second door feeding mechanism 13 and the roller conveyor mechanism 14 can be located between the pushing mechanism 15 and the opening on the side of the second door 22 of the replacement bin 2, thereby making fuller use of the sliding frame 12.

[0060] In one embodiment, a mobile bearing platform and a roller conveyor device 42 are sequentially arranged in the heating section 4, that is, the heating section 4 adopts a roller kiln structure;

[0061] The feed port is arranged on the side of the heating section 4 and is located at the position of the mobile bearing platform. The upstream end face of the heating section 4 is provided with a second pushing device 3 for pushing the material on the mobile bearing platform into the roller conveyor 42. In this embodiment, the second bin door feeding mechanism 13 pushes the material from the feed port onto the mobile bearing platform, and then the second pushing device 3 pushes the material on the mobile bearing platform onto the roller conveyor 42. On the one hand, the turning conveying of the material can be realized, so that the material is loaded longitudinally and conveyed transversely, the size of the feed port can be reduced, the leakage points can be reduced, the air tightness of the heating section 4 can be improved, and the material carrying capacity in the heating section 4 can be ensured. Among them, the mobile bearing platform is preferably a graphite platform with wear resistance and high temperature resistance.

[0062] In one embodiment, the discharging section 8 includes a discharging assembly 82 and a discharging conveyor 83 arranged at the outlet of the cooling bin 71 of the cooling section 7. The discharging assembly 82 is used to convey the material in the cooling bin 71 to the discharging conveyor 83. The discharging conveyor 83 is used to convey the material conveyed from the discharging assembly 82 to the next station. A third bin door 711 is provided downstream of the cooling bin 71 for opening and closing the cooling bin 71 to avoid temperature loss in the roller kiln or air entering the roller kiln due to the cooling bin 71 being open when no discharging is required. The discharging assembly 82 includes a fork mechanism 821 and a transition conveyor 822. During the discharging process of the cooling bin 71, the third bin door 711 is opened for a short time, which can reduce the loss of cold and thus reduce energy consumption.

[0063] The fork mechanism 821 includes a fourth linear drive mechanism 8211 and two fork arms 8212 arranged on the output end of the fourth linear drive mechanism 8211. The fourth linear drive mechanism 8211 drives the fork arms 8212 to extend into the cooling bin 71 through the third bin door 711 to receive materials. Preferably, the fourth linear drive mechanism 8211 drives the fork arms 8212 to move horizontally, and then extend into the cooling bin 71 through the third bin door 711 to receive or unload materials, so as to ensure the stability of receiving materials.

[0064] The transition conveyor 822 includes a lifting mechanism Ⅰ8221 and a roller conveyor Ⅰ8222 arranged on the conveying end of the lifting mechanism Ⅰ8221. The roller conveyor Ⅰ8222 is located between the two fork arms 8212 to ensure that the roller conveyor Ⅰ8222 and the two fork arms 8212 do not interfere with each other during their movement. During the discharging process of the roller kiln, after the fork arms 8212 receive the material from the cooling bin 71 and reset, the lifting mechanism Ⅰ8221 drives the roller conveyor Ⅰ8222 to rise to receive the material and transport the material to the discharging conveyor 83.

[0065] The discharging assembly 82 and the discharging conveyor 83 are used for discharging the cooling bin 71. Specifically, when discharging the materials in the roller kiln, the fork arm 8212 receives the materials from the cooling bin 71. The fork arm 8212 resets after receiving the materials, and then the lifting mechanism I8221 drives the roller conveyor I8222 to rise and receive the materials, and then the roller conveyor I8222 conveys the materials to the discharging conveyor 83. The positional relationship between the fork arm 8212 and the transition conveyor 822, that is, the lifting mechanism I8221 and the roller conveyor I8222 are arranged between the two fork arms 8212, can reasonably utilize the space outside the third bin door 711 of the cooling bin 71, can realize taking out the materials from the cooling bin 71 through the fork arm 8212, and then receiving the materials from the fork arm 8212 through the roller conveyor I8222 and conveying them. On the basis of ensuring a compact structure, the material can be taken out of the cooling bin 71 stably and reliably, and the material can be unloaded from the fork arm 8212 efficiently and stably, and at the same time, the problem of difficulty in reversing and difficulty in adjusting the discharge height caused by the conventional discharge method of directly connecting the conveyor rollers to the conveyor rollers will not occur (the discharge method of the conveyor roller connecting the conveyor roller requires one of the conveyor rollers to be arranged at an angle if the discharge height needs to be adjusted, and the material sintered in the roller kiln is very heavy, and inclined transportation will pose a safety hazard).

[0066] In one embodiment, when the lifting mechanism I8221 rises to allow the roller conveyor I8222 to receive the material, the roller conveyor I8222 and the discharge conveyor 83 are at the same height, and the two fork arms 8212 are lower than the roller conveyor I8222 and the discharge conveyor 83, and the material passes through the roller conveyor I8222 and the discharge conveyor 83. In this embodiment, when the lifting mechanism I8221 rises to allow the roller conveyor I8222 to receive the material, the material is directly lifted from the fork arm 8212, so that the material is completely separated from the fork arm 8212. At this time, the roller body on the roller conveyor I8222 rotates to move the material toward the discharge conveyor 83, and the conveying efficiency can be guaranteed at this time.

[0067] In another embodiment, since the current roller kiln discharge is generally a rolling conveying scheme (i.e., the materials are transported by rotating the roller body), the materials in the roller kiln are large in volume and heavy in weight. Considering the deadweight and inertia of the materials, the roller body cannot run too fast, resulting in a long discharge time. Therefore, in order to improve the conveying efficiency, when the lifting mechanism I8221 rises to make the roller conveyor I8222 take over the materials, the roller conveyor I8222, the fork arm 8212 and the discharge conveyor 83 are at the same height. During the roller kiln discharge process, the materials pass through the roller conveyor I8222, the fork arm 8212 located between the roller conveyor I8222 and the discharge conveyor 83, and the discharge conveyor 83 in sequence. During the roller kiln feeding process, the materials pass through the discharge conveyor 83, the fork arm 8212 located between the roller conveyor I8222 and the discharge conveyor 83, and the roller conveyor I8222 in sequence. In this embodiment, when the lifting mechanism Ⅰ8221 rises to allow the roller conveyor Ⅰ8222 to receive the material, the material is still in contact with the fork arm 8212; at this time, the roller body on the roller conveyor Ⅰ8222 rotates to move the material toward the discharge conveyor 83, and during the movement, the material always rubs against the fork arm 8212 between the roller conveyor Ⅰ8222 and the discharge conveyor 83 to form friction sliding to provide a certain friction force. Therefore, it is not necessary to consider the dead weight and inertia of the material, and the conveying speed of the roller conveyor Ⅰ8222 and the discharge conveyor 83 is guaranteed, and the problem of extending the braking distance of the material due to inertia will not occur, so that the conveying stability of the roller body is guaranteed while ensuring efficiency. This embodiment is suitable for the case where the dead weight of the material is heavy. Preferably, in this embodiment, the fork arm 8212 is made of graphite.

[0068] In one of the embodiments, a conveying roller assembly 712 and a lifting mechanism II 713 are provided in the cooling bin 71. The lifting mechanism II 713 is provided at the end of the conveying roller assembly 712, and is used to lift the material conveyed to the third bin door 711, so that the material leaves the conveying roller assembly 712 and is received by the fork mechanism 821. Specifically, the output end of the lifting mechanism II 713 lifts the material through the gap between the roller bodies of the conveying roller assembly 712, and the output end of the lifting mechanism II 713 is staggered with the two fork arms 8212. In this embodiment, when the roller kiln is feeding, the fork arm 8212 carries the material into the third bin door 711, and then the lifting mechanism II 713 lifts the material from the fork arm 8212, and the fork arm 8212 is reset. Finally, the lifting mechanism II 713 is reset to place the material on the conveying roller assembly 712.

[0069] In one embodiment, the discharging section 8 also includes an air curtain assembly 81 arranged in the cooling bin 71; the distance from the air curtain assembly 81 to the third bin door 711 is greater than the size of the material, that is, the material can be placed between the air curtain assembly 81 and the third bin door 711. At this time, after the material has completely passed through the air curtain assembly 81 and is located before the third bin door 711, the air curtain assembly 81 can be opened first to form an air curtain, and then the third bin door 711 can be opened. By setting the air curtain assembly 81, the air curtain assembly 81 can be opened before or during the opening of the third bin door 711, and the protective gas is released toward the third bin door 711 through the air curtain assembly 81, thereby effectively reducing the external air from entering the cooling bin 71 and the interior of the roller kiln through the third bin door 711, and reducing the impact of the opening of the third bin door 711 on the sintering atmosphere inside the roller kiln.

[0070] The utility model also provides a continuous firing method, using the above-mentioned continuous furnace, comprising the following steps:

[0071] The material enters the heating section 4 from the feeding section and is moved and fired in the heating section 4. When the material enters the heat-insulating front section 5, the heat-insulating door 9 is opened, and the material push / pull device 10 transfers the material from the heat-insulating front section 5 to the heat-insulating rear section 6 at a speed faster than the material conveying speed of the heating section 4, and then the heat-insulating door 9 is closed;

[0072] Each time a material enters the heat-insulating front section 5, the material push / pull device 10 and the heat-insulating door 9 repeat the operation once.

[0073] The continuous firing method can maintain the straight line arrangement of the heating section 4 and the cooling section 7, has high conveying efficiency, avoids mutual interference between the heating section 4 and the cooling section 7 without the need for a turning switching device, and greatly improves the conveying efficiency of the material from the heating section 4 to the cooling section 7.

[0074] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. 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 present invention should fall within the scope of protection of the present invention.

Claims

1. A continuous furnace, characterized in that: It comprises a feeding section, a heating section (4), a heat insulation section, a cooling section (7) and a discharging section (8) which are arranged in sequence; The heat-insulating section comprises a heat-insulating front section (5) and a heat-insulating rear section (6) which are arranged in sequence, an heat-insulating door (9) is arranged between the heat-insulating front section (5) and the heat-insulating rear section (6), and the heat-insulating section also comprises a material pushing / pulling device (10), the material pushing / pulling device (10) is used to transfer materials from the heat-insulating front section (5) to the heat-insulating rear section (6), and the material pushing / pulling speed of the material pushing / pulling device (10) is faster than the material conveying speed in the heating section (4).

2. The continuous furnace according to claim 1, characterized in that: The heat-insulated front section (5) and the heat-insulated rear section (6) both use unpowered roller conveyors to transport materials; Alternatively, the heat-insulating rear section (6) comprises a bearing platform and conveying rollers arranged in sequence, and the material pushing / pulling device (10) drives the material from the heat-insulating front section (5) into the bearing platform and then into the conveying rollers for conveying.

3. The continuous furnace according to claim 1, characterized in that: The material push / pull device (10) comprises a first linear drive mechanism (101) and a push / pull block (102); the push / pull block (102) is hingedly arranged at the output end of the first linear drive mechanism (101); and the rotation angle of the push / pull block (102) is between 0° and 90° relative to the push / pull output stroke direction of the first linear drive mechanism (101); and an elastic member (103) is further arranged at the hinge between the push / pull block (102) and the output end of the first linear drive mechanism (101) so that the push / pull block (102) is at a 90° position; The first linear drive mechanism (101) is arranged at the thermal insulation front section (5) or the thermal insulation rear section (6), and the output end of the first linear drive mechanism (101) is arranged toward the thermal insulation rear section (6) or the thermal insulation front section (5).

4. The continuous furnace according to claim 3, characterized in that: The heating section (4) is provided with a material correction mechanism (41), and after the material passes through the material correction mechanism (41), the side surface of the material is located between the end of the push / pull block (102) and the first linear drive mechanism (101) when the material is at a 90° position.

5. The continuous furnace according to any one of claims 1 to 4, characterized in that: The heating section (4) is provided with a feed inlet on one side perpendicular to the material conveying direction of the heating section, and the feed inlet comprises a feed device (1) connected to the feed inlet; The feeding device (1) comprises a feeding support (11), a sliding frame (12), a roller conveying mechanism (14) and a pushing mechanism (15); the pushing mechanism (15) is arranged toward the feeding port; the feeding support (11) is arranged between the feeding port and the pushing mechanism (15); the sliding frame (12) is slidably arranged on the feeding support (11); the roller conveying mechanism (14) is arranged on the sliding frame (12); the sliding frame (12) moves to switch the roller conveying mechanism (14) to align with or leave the feeding port.

6. The continuous furnace according to claim 5, characterized in that: The feed section further comprises a replacement bin (2) arranged between the feed port and the feed support (11); one side of the replacement bin (2) is connected to the feed port and is provided with a first bin door (21); the other end of the replacement bin (2) is provided with a second bin door (22).

7. The continuous furnace according to claim 6, characterized in that: The feeding device (1) further comprises a second bin door feeding mechanism (13) arranged in parallel on the sliding frame (12), the second bin door feeding mechanism (13) comprising a second linear drive mechanism (131) and a third linear drive mechanism (132) arranged on the sliding frame (12) and parallel to each other, the second bin door (22) being arranged on the output end of the second linear drive mechanism (131), a sliding hole (221) being arranged on the second bin door (22), a pushing rod (133) being arranged on the output end of the third linear drive mechanism (132), the pushing rod (133) being slidably arranged in the sliding hole (221) and passing through the second bin door (22).

8. The continuous furnace according to claim 6, characterized in that: The feeding device (1) further comprises a second bin door feeding mechanism (13) arranged in parallel on the sliding frame (12), the second bin door feeding mechanism (13) comprising a second linear drive mechanism (131) and a push rod (133) arranged on the sliding frame (12), the second bin door (22) being arranged on the output end of the second linear drive mechanism (131), a sliding hole (221) being arranged on the second bin door (22), the push rod (133) being slidably arranged on the sliding frame (12) and the sliding hole (221), and one end of the push rod (133) passing through the second bin door (22), and the sliding direction of the push rod (133) being parallel to the output direction of the second linear drive mechanism (131); The second bin door feeding mechanism (13) also includes an elastic reset member driving the push rod (133) to be located close to the side of the pushing mechanism (15); when the second bin door feeding mechanism (13) is located between the pushing mechanism (15) and the opening on the side of the second bin door (22) of the replacement bin (2), the pushing mechanism (15) can push the push rod (133) to slide.

9. The continuous furnace according to any one of claims 1 to 4 and 6 to 8, characterized in that: The discharging section (8) comprises a discharging assembly (82) and a discharging conveyor (83) arranged at the outlet of the cooling bin (71) of the cooling section (7); a third bin door (711) is arranged downstream of the cooling bin (71); and the discharging assembly (82) comprises a fork mechanism (821) and a transition conveyor (822); The material forking mechanism (821) comprises a fourth linear drive mechanism (8211) and two fork arms (8212) arranged at the output end of the fourth linear drive mechanism (8211), and the fourth linear drive mechanism (8211) drives the fork arms (8212) to extend into the cooling bin (71) through the third bin door (711) to receive materials; The transition conveyor (822) includes a lifting mechanism I (8221) and a roller conveyor I (8222) arranged on the conveying end of the lifting mechanism I (8221), and the roller conveyor I (8222) is located between the two fork arms (8212); After the fork arm (8212) receives the material from the cooling bin (71) and resets, the lifting mechanism I (8221) drives the roller conveyor I (8222) to rise to receive the material and transport the material to the discharge conveyor (83).

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