A high-efficiency oxygen-enriched tunnel kiln

Abstract

The present invention relates to the field of tunnel kilns, and specifically to a high-efficiency oxygen-enriched tunnel kiln, comprising an outer mounting box, a sand-turning assembly installed inside the outer mounting box, and a sand-breaking assembly. The high-efficiency oxygen-enriched tunnel kiln of the present invention can plow and exchange the sealing sand at the upper and lower ends of the interior of a sealing trough box through the outer mounting box arranged on the kiln car, the inner sliding shell arranged inside the outer mounting box, the first circular hole opened on the inner sliding shell, and the turning piece arranged inside the first circular hole, so that the sealing sand at the upper and lower ends of the interior of the sealing trough box are continuously exchanged, preventing the sealing sand at the upper end of the interior of the sealing trough box from being continuously in a heated state, so that the sealing sand can evenly seal the skirt plate.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel kilns, in particular to a high-efficiency oxygen-enriched tunnel kiln. Background Art

[0002] The tunnel kiln body is typically a long, straight tunnel with fixed walls and a vaulted ceiling on either side. A kiln car runs on tracks at the base. Combustion equipment is located on either side of the central section of the tunnel kiln body, forming a fixed high-temperature zone and a firing zone. High-temperature flue gas, driven by a chimney or induced draft fan at the front of the tunnel kiln, flows along the tunnel toward the kiln head, gradually preheating the products entering the kiln. This section constitutes the tunnel kiln's preheating zone. Cold air is blown in at the rear of the tunnel kiln to cool the products entering the tunnel kiln. This section constitutes the tunnel kiln's cooling zone.

[0003] When the raw materials are fired, they need to be placed on the kiln car, and then the kiln car is pushed into the tunnel kiln for firing by a pushing device. A sealing groove will be installed inside the tunnel kiln, and the inside of the sealing groove will be loaded with sealing sand. When the kiln car moves inside the tunnel kiln, the skirt of the kiln car will be inserted into the inside of the sealing sand. At this time, the skirt and the sealing sand cooperate with each other to fill the gap between the kiln car and the kiln wall to form an effective sealing layer to prevent high-temperature gas leakage, maintain the thermal efficiency and temperature uniformity in the kiln, and block the upper and lower spaces of the kiln car, thereby preventing the hot air flow in the positive pressure zone of the kiln from overflowing from under the car and burning the metal parts under the car, and also preventing the cold air from leaking into the negative pressure zone of the kiln to reduce the air flow temperature and increase the uneven distribution of the air flow.

[0004] However, the kiln car drives the raw materials into the tunnel kiln, and the tunnel kiln burns the raw materials on the kiln car. The preheating zone and the firing zone inside the tunnel kiln are both high-temperature areas, and the sealing sand at the upper end of the sealing groove is continuously exposed to the air. The sealing sand in the sealing groove is affected by the radiation heat and convection heat from the inside of the tunnel kiln. Due to the rising of hot air, the temperature of the sealing sand at the upper end of the sealing groove is usually higher than that of the sealing sand at the lower end, and the heat of the sealing sand at the upper end of the sealing groove is not easy to conduct downward, resulting in the temperature of the sealing sand at the upper end being higher than that of the sealing sand at the lower end, and the skirt plate is continuously in contact with the upper end. When the sealing sand at the ends comes into contact with the skirt, this temperature difference will cause heat to be transferred to the skirt through the sealing sand. Due to the uneven heat conduction, the temperature distribution on the skirt surface will be uneven. This uneven temperature distribution will cause thermal stress to be generated inside the skirt, which will cause the skirt to deform. After the skirt is deformed, the gap between the skirt and the kiln wall will become larger, the sealing effect will become worse, the high-temperature gas will easily leak, the thermal efficiency will be reduced, and the skirt will collide with the kiln wall and cause damage to the kiln wall. In addition, if the sealing sand is severely compacted, it will also exert additional pressure on the skirt, further aggravating the deformation. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-efficiency oxygen-enriched tunnel kiln to solve the problem that the temperature of the sealing sand at the upper end of the sealing groove is usually higher than that of the sealing sand at the lower end, and the heat of the sealing sand at the upper end of the sealing groove is not easy to conduct downward, which will lead to uneven temperature distribution on the surface of the skirt plate and cause deformation of the skirt plate.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A high-efficiency oxygen-enriched tunnel kiln comprises a tunnel kiln and a track, wherein the track is installed inside the tunnel kiln, a sealing tank box is installed inside the tunnel kiln, and sealing sand is loaded in the sealing tank box, a kiln car is installed on the track, a skirt is installed at the bottom of the kiln car, and an external installation box is installed at the bottom of the kiln car;

[0008] The sand-turning assembly is arranged inside the outer mounting box, and the sand-turning assembly includes an inner sliding shell arranged inside the outer mounting box, a first circular hole is opened at the bottom of the inner sliding shell, and a turning piece is arranged inside the first circular hole. When the turning piece rotates, it can move upward to plow the sealing sand in the sealing groove box, so that the sealing sand inside the sealing groove box is evenly matched with the skirt plate to block the heat source;

[0009] The breaking up component is arranged inside the outer installation box and is used to impact and break up the sealing sand. At the same time, it cooperates with the sand turning component to make the inner sliding shell slide up and down, so that the turning part can plow the sealing sand inside the sealing groove box.

[0010] Preferably, the turning member comprises a cylinder rotatably connected to the inner wall of the first circular hole, the bottom of the cylinder has a pointed end, and a turning spiral disk is installed on the outside of the cylinder;

[0011] When the two cylinders rotate synchronously in opposite directions, the turning spiral disk can transport the sealing sand at the lower end of the sealing groove box to its upper end, so that the sealing sand inside the sealing groove box can evenly block the heat source.

[0012] Preferably, a driving member is installed inside the outer mounting box, and the driving member includes a driving turntable rotatably connected to the inner top wall of the outer mounting box, an arc-shaped opening is opened on the outer mounting box, and the driving turntable is located inside the arc-shaped opening, a rubber pad is installed on the rolling surface of the driving turntable, an upper sleeve with the barrel opening facing downward is fixed to the bottom of the driving turntable, and one end of the rotating column extending out of the second circular hole is located inside the upper sleeve, a limiting groove is opened on the outer surface of the upper sleeve, a limiting column is installed inside the limiting groove, and one end of the limiting column is fixed to the outer surface of the rotating column;

[0013] The limiting groove cooperates with the limiting column to limit the rotating column, so that the upper sleeve drives the turning piece to turn the sealing sand through the rotating column.

[0014] Preferably, the breaking up assembly includes a lifting plate slidably connected to the inside of the outer mounting box, the lifting plate has two slides, and the edge of the outer mounting box is slidably connected to the inside of the slide, a raised column is fixed to the bottom of the lifting plate, a spiral push strip is fixed to the outer wall of the upper sleeve, and an arc block is fixed to the side of the lifting plate facing the upper sleeve, and the spiral push strip cooperates with the arc block to drive the lifting plate to move up and down.

[0015] Preferably, a material opening is provided on the lifting plate, and the bottom of the material opening is in an inclined shape, and the bottom end of the inclined surface corresponds to the direction in which the kiln car slides toward the tunnel kiln outlet.

[0016] Preferably, a support member is fixed on the side of the lifting plate facing the inner sliding shell, and the support member includes two support plates, and the two support plates are symmetrical with the limiting column as the center, and an outer ring is fixed on the side of the two support plates away from the lifting plate, and the outer ring is sleeved on the outer wall of the upper sleeve, and the limiting column is located between the two outer rings;

[0017] When the lifting plate moves up and down, the inner sliding shell can be driven to slide up and down through the outer ring and the support plate, so that the turning piece plows the sealing sand.

[0018] Preferably, a gathering component is provided inside the outer installation box for gathering the sealing sand after the skirt board is plowed, so as to gather the sealing sand to the sliding track of the skirt board again.

[0019] Preferably, the gathering component includes two symmetrical gathering blocks, and the two gathering blocks have a curved surface on one side corresponding to each other. Two symmetrical triangular blocks are fixed to the inner wall of the outer mounting box, and the gathering block is located between the two triangular blocks. The triangular block has an inclined surface, and T-shaped columns are fixed on the side of the two gathering blocks away from each other, and the T-shaped columns are slidably connected to the inclined surface of the triangular blocks.

[0020] Preferably, the inner sliding shell is provided with a limiting groove on one side facing the gathering block, the internal sliding connection of the limiting groove is connected to the limiting slider, and one side of the limiting slider is fixed on a side wall of the gathering block corresponding to it, and a second return spring is fixed between the limiting slider and the limiting groove.

[0021] The beneficial effects of the present invention are:

[0022] 1. Through the outer installation box arranged on the kiln car, the inner sliding shell arranged inside the outer installation box, the first circular hole opened on the inner sliding shell, and the turning piece arranged inside the first circular hole, the sealing sand at the upper and lower ends of the sealing trough box can be turned over and exchanged, so that the sealing sand at the upper and lower ends of the sealing trough box can be continuously exchanged to prevent the sealing sand at the upper end of the sealing trough box from being continuously heated, so that the sealing sand can evenly seal the skirt plate.

[0023] 2. The breaking up component set inside the outer installation box can impact the sealing sand, thereby preventing the sealing sand from becoming large blocks and compacting. At the same time, it can also drive the inner sliding shell to slide up and down, thereby improving the plowing efficiency of the turning part on the sealing sand and improving the sealing performance of the sealing sand on the skirt board.

[0024] 3. The gathering component arranged inside the outer installation box can gather the sealing sand inside the sealing groove box to the middle of the skirt plate sliding track, thereby maintaining the sealing performance of the sealing sand on the skirt plate, thereby preventing the cold air at the bottom of the kiln car from entering the interior of the tunnel kiln and causing heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a front view structural schematic diagram of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the kiln car of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the outer installation box of the present invention.

[0029] Figure 5 It is a structural schematic diagram of a first three-dimensional cross section of the outer installation box of the present invention.

[0030] Figure 6 It is a structural schematic diagram of the sand-casting assembly of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the gathering component of the present invention.

[0032] Figure 8 It is a structural schematic diagram of the breaking up component of the present invention.

[0033] Figure 9 It is a structural schematic diagram of the transmission part of the present invention.

[0034] In the picture:

[0035] 10. Tunnel kiln; 11. Track; 12. Sealing trough box; 13. Kiln car; 14. Skirt board; 15. External installation box;

[0036] 20. Foundry assembly; 22. Inner sliding housing; 23. First circular hole; 24. Turning member; 240. Cylinder; 241. Turning spiral disk; 25. Transmission member; 250. Rotating column; 251. Second circular hole; 252. First gear; 253. Second gear; 254. Transmission belt; 255. Third gear; 26. Driving member; 260. Driving turntable; 261. Upper sleeve; 262. Limiting groove; 263. Limiting column;

[0037] 30. Breaking assembly; 31. Lifting plate; 32. Raised column; 33. Feeding port; 34. Support member; 35. Screw push bar; 36. Arc block; 37. Linkage plate; 38. First return spring;

[0038] 40. Gathering assembly; 41. Gathering block; 42. Triangular block; 43. T-shaped column; 44. Limiting slide; 45. Limiting slider; 46. Second return spring. DETAILED DESCRIPTION

[0039] The following will refer to the attached Figures 1 to 9 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Example 1

[0040] As attached Figure 1-Figure 3 As shown, a high-efficiency oxygen-enriched tunnel kiln includes a tunnel kiln 10. A track 11 and a sealing tank box 12 are installed inside the tunnel kiln 10. There are two sealing tank boxes 12, and the two sealing tank boxes 12 are symmetrical with the track 11 as the center. Sealing sand is installed inside the sealing tank box 12. A movable kiln car 13 is installed on the track 11. Skirt boards 14 are installed on both sides of the bottom of the kiln car 13, and the skirt boards 14 are respectively located inside the corresponding sealing tank boxes 12.

[0041] During use, the outside of the tunnel kiln 10 can be connected to an oxygen enrichment device to increase the oxygen concentration inside the tunnel kiln 10. Then, the raw materials to be fired are placed on the kiln car 13, and the kiln car 13 is pushed to the track 11 by a pushing device. The kiln car 13 slides along the extension direction of the track 11. At this time, the kiln car 13 slides from the entrance of the tunnel kiln 10 to its exit. When the kiln car 13 slides to the exit of the tunnel kiln 10, it will pass through the preheating zone, firing zone and cooling zone of the tunnel kiln 10 in sequence, and the skirt plate 14 is inserted into the sealing sand of the sealing groove box 12. The sealing sand can prevent high-temperature gas from flowing into the bottom of the kiln car 13. When the kiln car 13 passes through the cooling zone and slides out of the tunnel kiln 10 through the exit of the tunnel kiln 10, the raw materials are fired.

[0042] refer to Figure 3-Figure 9 As shown, an outer mounting box 15 is fixed to the bottom of the kiln car 13, and a sand turning assembly 20 is provided inside the outer mounting box 15 for turning the sealing sand at the lower end of the sealing trough box 12 to its upper end, so as to facilitate the exchange of the sealing sand at the upper and lower ends, thereby keeping the sealing sand at the upper and lower ends of the sealing trough box 12 evenly sealing the skirt plate 14, and blocking the high-temperature gas inside the tunnel kiln 10 from flowing to the bottom of the kiln car 13.

[0043] The sand-turning assembly 20 includes an inner sliding shell 22 installed inside the outer installation box 15 . Two symmetrical first circular holes 23 are formed at the bottom of the inner sliding shell 22 . A material-turning member 24 is installed inside each of the two first circular holes 23 .

[0044] The turning member 24 includes a cylinder 240 rotatably connected to the inner wall of the first circular hole 23, and the bottom of the cylinder 240 has a pointed end. A turning spiral disk 241 is installed on the outside of the cylinder 240. When the two cylinders 240 rotate synchronously in opposite directions, the turning spiral disk 241 can transport the sealing sand at the lower end of the sealing groove box 12 to its upper end, so that the sealing sand inside the sealing groove box 12 can evenly block the heat source.

[0045] A transmission member 25 is provided inside the inner sliding shell 22, and the transmission member 25 includes a rotating column 250 rotatably connected to the inner bottom wall of the inner sliding shell 22. A second circular hole 251 is opened on the top of the inner sliding shell 22, and the outer surface of the rotating column 250 is rotatably connected to the inner wall of the second circular hole 251. A first gear 252 and a second gear 253 are fixed to the outer surface of the rotating column 250, and the second gear 253 is located above the first gear 252. A third gear 255 is installed on each of the two cylinders 240, and the two third gears 255 are at different heights. A transmission belt 254 is installed between the lower third gear 255 and the first gear 252, and the higher third gear 255 is meshed and connected with the second gear 253.

[0046] A driving member 26 is installed inside the outer installation box 15 for driving the two cylinders 240 to rotate synchronously in opposite directions through the transmission member 25, so that the sealing sand at the lower end of the sealing groove box 12 can be exchanged to the upper end thereof.

[0047] The driving member 26 includes a driving turntable 260 rotatably connected to the inner top wall of the outer mounting box 15. An arc-shaped opening is provided on the outer mounting box 15, and the driving turntable 260 is located inside the arc-shaped opening. A rubber pad is installed on the rolling surface of the driving turntable 260. An upper sleeve 261 is fixed to the bottom of the driving turntable 260, and the barrel mouth of the upper sleeve 261 faces downward, and one end of the rotating column 250 extending out of the second circular hole 251 is located inside the upper sleeve 261. A limiting groove 262 is provided on the outer surface of the upper sleeve 261, and a limiting column 263 is installed inside the limiting groove 262, and one end of the limiting column 263 is fixed to the outer surface of the rotating column 250. The limiting groove 262 cooperates with the limiting column 263 to limit the rotating column 250, so that the upper sleeve 261 drives the turning member 24 to turn over the sealing sand through the rotating column 250.

[0048] When the kiln car 13 moves along the extension direction of the track 11, the skirt 14 of the kiln car 13 is inserted into the sealing sand and slides, and the driving turntable 260 rolls along the kiln wall of the tunnel kiln 10. When the driving turntable 260 rotates around its axial direction, the driving turntable 260 drives the rotating column 250 to rotate through the upper sleeve 261 and the limit column 263, and the rotating column 250 drives the third gear 255 connected to it to rotate through the first gear 252, the transmission belt 254 and the second gear 253, so that the two cylinders 240 rotate synchronously in opposite directions. Since the principle of the turning piece 24 is the same as that of the auger drill, when the cylinder 240 rotates, the turning spiral disk 241 drives the sealing sand at the lower end of the sealing trough box 12 to turn over to its upper end, so that the sealing sand inside the sealing trough box 12 can evenly block the heat source received by the skirt 14. Example 2

[0049] In the tunnel kiln 10, the sealing sand is prone to compaction in the firing zone. This is because the firing zone is the area with the highest temperature in the tunnel kiln 10. The sealing sand is subjected to strong heat radiation and heat conduction in this area. Under high temperature conditions, the moisture in the sealing sand is easy to evaporate, and its internal structure may also change, leading to the occurrence of compaction. In addition, the temperature fluctuations and thermal shocks that may exist in the firing zone will also accelerate the compaction process of the sealing sand. The compacted sealing sand cannot effectively fill the gap between the kiln car 13 and the kiln wall, resulting in hot air leakage, which not only affects the thermal efficiency in the kiln, but may also lead to energy waste and uneven temperature distribution, thereby affecting product quality. In addition, the hardness of the compacted sealing sand will usually increase, which will result in greater friction when in contact with the skirt plate 14. Under long-term action, the wear of the skirt plate 14 will be accelerated, reducing its service life. In view of this, improvements are made on the basis of Example 1.

[0050] refer to Figure 6 、 Figure 7 and Figure 8 As shown, a breaking up assembly 30 is provided inside the outer installation box 15 for knocking the sealing sand, thereby breaking up the compacted sealing sand.

[0051] The breaking up assembly 30 includes a lifting plate 31 slidably connected to the inside of the outer mounting box 15, the lifting plate 31 has two slides, and the edges of the outer mounting box 15 are slidably connected to the inside of the slides, and a plurality of equidistantly arranged raised columns 32 are fixed to the bottom of the lifting plate 31. When the lifting plate 31 moves up and then moves down, the lifting plate 31 drives the raised columns 32 to hit the sealing sand located below, thereby impacting the sealing sand to prevent the sealing sand from becoming compacted. A material port 33 is provided on the lifting plate 31, and the bottom of the material port 33 is inclined, and the bottom end of the inclined surface corresponds to the direction in which the kiln car 13 slides toward the exit of the tunnel kiln 10. When the lifting plate 31 moves down to impact the sealing sand, the material port 33 can discharge the sealing sand pushed by the lifting plate 31 to its rear.

[0052] A support member 34 is fixed on one side of the lifting plate 31 facing the inner sliding shell 22 , which is used to drive the inner sliding shell 22 to slide up and down, so that the sealing sand can be plowed through the turning member 24 .

[0053] The support member 34 includes two support plates, and the two support plates are symmetrical with the limiting column 263 as the center. An outer ring is fixed on the side of the two support plates away from the lifting plate 31, and the outer ring is sleeved on the outer wall of the upper sleeve 261, and the limiting column 263 is located between the two outer rings. When the lifting plate 31 moves up and down, the outer ring can drive the inner sliding shell 22 to slide up and down, so that the turning piece 24 plows the sealing sand.

[0054] A spiral push strip 35 is fixed on the outer wall of the upper sleeve 261 , and an arc block 36 is fixed on the side of the lifting plate 31 facing the upper sleeve 261 . The spiral push strip 35 cooperates with the arc block 36 to drive the lifting plate 31 to move up and down, thereby adjusting the use height of the turning piece 24 .

[0055] A linkage plate 37 is fixed to the inner wall of the outer mounting box 15, and the linkage plate 37 is located below the driving turntable 260. A first reset spring 38 is fixed between the bottom of the linkage plate 37 and the top of the lifting plate 31, which is used to support the lifting plate 31, thereby facilitating the lifting plate 31 to reset.

[0056] When the upper sleeve 261 rotates, the bottom end of the spiral push bar 35 first contacts the arc block 36. As the upper sleeve 261 rotates, the arc block 36 slides from the bottom end of the spiral push bar 35 to its top end, and the arc block 36 drives the lifting plate 31 to move up to compress the first return spring 38. When the arc block 36 slides to the top end of the spiral push bar 35, the lifting plate 31 compresses the first return spring 38 to the limit, and as the upper sleeve 261 rotates, the arc block 36 breaks away from the limit of the spiral push bar 35. After that, the first return spring 38 drives the lifting plate 31 to move down and reset. At this time, the lifting plate 31 drives the raised column 32 to hit the sealing sand below, thereby impacting the sealing sand and preventing the sealing sand from becoming compacted. At the same time, during the upward movement of the lifting plate 31, the support member 34 can drive the inner sliding shell 22 to move upward, thereby adjusting the height of the turning member 24, so that when the turning member 24 stirs the sealing sand at the lower end, it can also slide vertically to turn the sealing sand, thereby improving the plowing efficiency of the sealing sand. Example 3

[0057] When the skirt plate 14 slides inside the sealing sand of the sealing trough box 12, since the position of the track 11 is fixed and the wheels of the kiln car 13 slide along the extension direction of the track 11, the sliding trajectory of the kiln car 13 is also a straight line, and the sliding trajectory of the skirt plate 14 inside the sealing trough box 12 is also a straight line. However, when the skirt plate 14 slides inside the sealing sand, it will push the sealing sand to its sides. As multiple kiln cars 13 drive their skirt plates 14 to slide inside the sealing sand multiple times, the amount of sealing sand accumulated on both sides of the skirt plate 14 will increase, while the amount of sealing sand on the sliding trajectory of the skirt plate 14 will decrease, thereby affecting the sealing effect. In view of this, improvements are made on the basis of Example 2.

[0058] refer to Figure 5 and Figure 7 As shown, a gathering assembly 40 is provided inside the outer installation box 15 for gathering the sealing sand after the skirt board 14 is plowed, so as to gather the sealing sand to the sliding track of the skirt board 14 again.

[0059] The gathering assembly 40 includes two symmetrical gathering blocks 41, and the two gathering blocks 41 have a curved surface on one side corresponding to each other. Two symmetrical triangular blocks 42 are fixed to the inner wall of the outer mounting box 15, and the gathering block 41 is located between the two triangular blocks 42. The triangular block 42 has an inclined surface. A T-shaped column 43 is fixed on the side of the two gathering blocks 41 away from each other, and the T-shaped column 43 is slidably connected to the inclined surface of the triangular block 42.

[0060] A limiting groove 44 is provided on the side of the inner sliding shell 22 facing the gathering block 41. The limiting groove 44 is internally slidably connected to a limiting slider 45, and one side of the limiting slider 45 is fixed on a side wall of the gathering block 41 corresponding thereto. A second return spring 46 is fixed between the limiting slider 45 and the limiting groove 44 for supporting the limiting slider 45, thereby facilitating the reset of the gathering block 41.

[0061] Since the T-shaped column 43 is located at the bottom end of the triangular block 42, the second return spring 46 is in a stretched state. When the T-shaped column 43 is located at the top end of the triangular block 42, the second return spring 46 is in an initial state. When the inner sliding shell 22 moves upward, the inner sliding shell 22 drives the gathering block 41 to move up through the limit slider 45, and the T-shaped column 43 slides from the bottom end of the triangular block 42 to its top end, and the second return spring 46 in a stretched state can return to its initial state, and the second return spring 46 is in an initial state. The limiting slider 45 pulls the gathering block 41 toward the triangular block 42, and the two gathering blocks 41 move away from each other. When the inner sliding housing 22 moves downward to reset, the T-shaped column 43 slides from the top end of the triangular block 42 to the bottom end thereof, and the limiting slider 45 pulls the second reset spring 46, and the two gathering blocks 41 move closer to each other, thereby gathering the sealing sand below them to their middle position, thereby gathering the sealing sand to the middle area of ​​the sliding track of the skirt plate 14, thereby maintaining the sealing performance of the sealing sand on the skirt plate 14.

[0062] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A high-efficiency oxygen-enriched tunnel kiln, comprising a tunnel kiln (10) and a track (11), wherein the track (11) is installed inside the tunnel kiln (10), a sealing tank box (12) is installed inside the tunnel kiln (10), and sealing sand is loaded in the sealing tank box (12), a kiln car (13) is installed on the track (11), and a skirt plate (14) is installed at the bottom of the kiln car (13), characterized in that: The bottom of the kiln car (13) is equipped with an outer mounting box (15) A sand-turning assembly (20), the sand-turning assembly (20) is arranged inside the outer mounting box (15), the sand-turning assembly (20) includes an inner sliding shell (22) arranged inside the outer mounting box (15), two first circular holes (23) are symmetrically opened at the bottom of the inner sliding shell (22), and a turning piece (24) is provided inside the two first circular holes (23), and the turning piece (24) can move upward when rotating to turn over the sealing sand in the sealing groove box (12), and the turning piece (24) includes a cylinder (240) rotatably connected to the inner wall of the first circular hole (23), and the bottom of the cylinder (240) has a pointed end, and a turning spiral disk (241) is installed outside the cylinder (240); when the two cylinders (240) rotate synchronously in opposite directions, the turning spiral disk (241) can transport the sealing sand at the lower end of the sealing groove box (12) to its upper end; A transmission member (25) is provided inside the inner sliding shell (22), and the transmission member (25) includes a rotating column (250) rotatably connected to the inner bottom wall of the inner sliding shell (22), a second circular hole (251) is opened on the top of the inner sliding shell (22), and the outer surface of the rotating column (250) is rotatably connected to the inner wall of the second circular hole (251), and a driving member (26) is installed inside the outer installation box (15), and the driving member (26) includes a driving turntable (26) rotatably connected to the inner top wall of the outer installation box (15). 0), an upper sleeve (261) with its mouth facing downward is fixed to the bottom of the driving turntable (260), and one end of the rotating column (250) extending out of the second circular hole (251) is located inside the upper sleeve (261), a limiting groove (262) is provided on the outer surface of the upper sleeve (261), a limiting column (263) is installed inside the limiting groove (262), and one end of the limiting column (263) is fixed to the outer surface of the rotating column (250), and the driving turntable (260) is rolled against the kiln wall of the tunnel kiln (10); A breaking up assembly (30), the breaking up assembly (30) is arranged inside the outer mounting box (15), and is used to cooperate with the sand-turning assembly (20) to make the inner sliding shell (22) slide up and down; The scattering assembly (30) includes a lifting plate (31) slidably connected to the inside of the outer mounting box (15), a raised column (32) is fixed to the bottom of the lifting plate (31), a spiral push bar (35) is fixed to the outer wall of the upper sleeve (261), an arc block (36) is fixed on the side of the lifting plate (31) facing the upper sleeve (261), a material port (33) is opened on the lifting plate (31), the bottom of the material port (33) is in the shape of an inclined surface, and the lifting plate (31) is fixed on the side facing the inner sliding shell (22). A support member (34) is fixed, and the support member (34) includes two support plates. An outer ring is fixed on one side of the two support plates away from the lifting plate (31), and the outer ring is sleeved on the outer wall of the upper sleeve (261). The limiting column (263) is located between the two outer rings. A linkage plate (37) is fixed on the inner wall of the outer mounting box (15), and the linkage plate (37) is located below the driving turntable (260). A first return spring (38) is fixed between the bottom of the linkage plate (37) and the top of the lifting plate (31).

2. A high-efficiency oxygen-enriched tunnel kiln according to claim 1, characterized in that: An arc-shaped opening is formed on the outer mounting box (15), and the driving turntable (260) is located inside the arc-shaped opening. A rubber pad is installed on the rolling surface of the driving turntable (260). The limiting groove (262) cooperates with the limiting column (263) to limit the rotating column (250), so that the upper sleeve (261) drives the turning piece (24) to turn over the sealing sand through the rotating column (250).

3. A high-efficiency oxygen-enriched tunnel kiln according to claim 2, characterized in that: The lifting plate (31) has two slideways, and the edges of the outer mounting box (15) are slidably connected to the inside of the slideways. The spiral push strip (35) cooperates with the arc block (36) to drive the lifting plate (31) to move up and down.

4. A high-efficiency oxygen-enriched tunnel kiln according to claim 3, characterized in that: The bottom end of the inclined surface corresponds to the direction in which the kiln car (13) slides toward the exit of the tunnel kiln (10).

5. A high-efficiency oxygen-enriched tunnel kiln according to claim 4, characterized in that: The two support plates are symmetrical with the limiting column (263) as the center. When the lifting plate (31) moves up and down, the inner sliding shell (22) can be driven to slide up and down through the outer ring and the support plate, so that the turning piece (24) turns the sealing sand.

6. A high-efficiency oxygen-enriched tunnel kiln according to claim 5, characterized in that: A gathering component (40) is provided inside the outer installation box (15) for gathering the sealing sand after the skirt plate (14) is plowed, thereby gathering the sealing sand again to the sliding track of the skirt plate (14).

7. A high-efficiency oxygen-enriched tunnel kiln according to claim 6, characterized in that: The gathering assembly (40) includes two symmetrical gathering blocks (41), and the two gathering blocks (41) have arc-shaped surfaces on their corresponding sides. Two symmetrical triangular blocks (42) are fixed to the inner wall of the outer installation box (15), and the gathering block (41) is located between the two triangular blocks (42). The triangular block (42) has an inclined surface. A T-shaped column (43) is fixed on the side of the two gathering blocks (41) away from each other, and the T-shaped column (43) is slidably connected to the inclined surface of the triangular block (42).

8. The high-efficiency oxygen-enriched tunnel kiln according to claim 7, characterized in that: The inner sliding shell (22) is provided with a limiting sliding groove (44) on one side facing the gathering block (41), and the limiting sliding groove (44) is internally slidably connected to the limiting slider (45), and one side of the limiting slider (45) is fixed on a side wall of the gathering block (41) corresponding thereto, and a second return spring (46) is fixed between the limiting slider (45) and the limiting sliding groove (44).

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