A tunnel kiln firing device

Abstract

The present application belongs to the field of tunnel kiln roasting, and particularly relates to a tunnel kiln roasting device, which comprises a preheating kiln, a roasting kiln, a cooling kiln, a driving mechanism and a kiln car mechanism, wherein a connecting mechanism B at the tail end of the kiln car mechanism cooperates with a connecting mechanism A at the head end of an adjacent kiln car mechanism to realize the connection of the two kiln car mechanisms. The kiln car mechanism can be used in circulation in the kiln body by surrounding the three kiln bodies in a ring shape. The driving mechanism arranged on the inner side wall of the three kiln bodies cooperates with the several kiln car mechanisms connected in head-to-tail mode to avoid the situation that the several kiln car mechanisms connected in head-to-tail mode flash or collide with each other due to walking and stopping in the kiln body, thereby effectively protecting the refractory layer formed by the heat-resistant bricks on the kiln car mechanism.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of tunnel kiln roasting, and particularly relates to a tunnel kiln roasting device. BACKGROUND

[0002] The tunnel kiln is a modern continuous firing thermal equipment, which is widely used in the roasting production of ceramic products and is also widely used in the metallurgical industry of abrasives.

[0003] Compared with the old-fashioned intermittent reverse flame kiln, the tunnel kiln has the advantages of continuous production, short cycle, large output, high quality, high heat utilization rate, fuel economy, labor saving and high product yield.

[0004] In the tunnel kiln, a plurality of kiln cars connected in series are used to pull the lepidolite into the kiln to be roasted in the preheating zone, the high-temperature zone and the cooling zone of the tunnel kiln in sequence. The kiln car located in the high-temperature zone needs to be pulled out when the roasting time is reached, and at the same time, the subsequent kiln car connected therewith will advance one car position synchronously and pull a new kiln car into the tunnel kiln, so that the kiln cars connected in series will stop and start, resulting in mutual collision between the kiln cars connected in series when they stop due to their large inertia or a flashing situation when they start, and further resulting in damage to the refractory layer formed by the heat-resistant bricks on the kiln car due to vibration.

[0005] In the traditional tunnel kiln, the kiln car is connected with a new kiln car at the front end of the kiln car when the roasting process is completed, and the connection process of the kiln car is manually operated. Since the temperature in the tunnel kiln is high, the working environment for manually connecting the kiln car is poor.

[0006] The present application designs a tunnel kiln roasting device to solve the above problems. SUMMARY

[0007] In order to solve the defects in the prior art, the present application discloses a tunnel kiln roasting device, which is realized by using the following technical scheme.

[0008] A tunnel kiln roasting device, which comprises a preheating kiln, a roasting kiln, a cooling kiln, a driving mechanism and a kiln car mechanism, wherein the connecting mechanism B at the tail end of the kiln car mechanism cooperates with the connecting mechanism A at the head end of the adjacent kiln car mechanism to realize the connection of the two kiln car mechanisms; a plurality of kiln car mechanisms connected in sequence and carrying lepidolite pass through the preheating kiln, the roasting kiln and the cooling kiln distributed along the circumference in sequence to complete the roasting of the lepidolite, and the preheating kiln, the roasting kiln and the cooling kiln distributed along the circumference can realize the recycling of the kiln car mechanism that has completed the roasting; the driving mechanism is installed on one side of the kiln body and synchronously starts and synchronously slows down all the kiln car mechanisms on the ring track; the rear kiln car mechanism can be connected with the front kiln car mechanism outside the kiln body by manual pushing, and the rear kiln car mechanism can be disconnected from the front kiln car mechanism by manual pulling.

[0009] As a further improvement of the present technology, an air circulation system is installed between the preheating kiln and the cooling kiln to circulate the heat from the kiln car mechanism and the lithium mica carried by the kiln car mechanism into the preheating kiln.

[0010] As a further improvement of the present technology, the kiln car mechanism comprises a material carrying kiln car, wheels, connecting mechanism A, and connecting mechanism B, wherein the space for filling lithium mica on the material carrying kiln car is built with refractory bricks, and the wheels are installed on the material carrying kiln car to cooperate with the ring track; the front end of the material carrying kiln car is provided with connecting mechanism A, and the rear end of the material carrying kiln car is provided with connecting mechanism B cooperating with the connecting mechanism A on the adjacent material carrying kiln car.

[0011] As a further improvement of the present technology, the connecting mechanism A comprises square sleeve A, locking block, lever A, spring B, leaf spring A, square sleeve B, spring C, fixed rod, sliding rod, spring D, sliding sleeve, spiral spring, ring sleeve B, spring E, and circular ring B, wherein the square sleeve A is hinged to the rear end of the material carrying kiln car through a vertical hinge shaft, and the material carrying kiln car is provided with two leaf springs A for swinging reset of the square sleeve A; the square sleeve B is horizontally slid in the square sleeve A and is provided with spring C for reset of the square sleeve B; the locking block for friction locking of the square sleeve B moving out of the square sleeve A is slid in the two sliding grooves B on the inner wall of the square sleeve A and is provided with spring B for reset of the locking block, and the lever A for manual release of the locking block locking the square sleeve B is provided on the locking block; the square sleeve B is provided with a structure for locking the initial position of the square sleeve B; the sliding rod and spring D for reset of the sliding rod are horizontally slid in the square sleeve B, the circular ring B driven by the fixed rod in the square sleeve B is nested and rotated on the sliding rod, and the sliding sleeve is axially slid on the sliding rod; the ring sleeve B is nested and rotated on the sliding sleeve and is provided with spiral spring for reset of the rotation of the ring sleeve B; the spring E for axial reset of the ring sleeve B is nested on the sliding rod; the four levers B uniformly distributed on the end face of the circular ring B are axially slid in the four sliding grooves C on the end face of the ring sleeve B; the end face of the ring sleeve B is provided with internal thread sleeve B, and the internal thread sleeve B is provided with two sliding grooves D with a distance of 180 degrees.

[0012] As a further improvement of the present technology, the limiting rod cooperating with the end face of the square sleeve B is slid in the ring sleeve A at the two sliding grooves A on the side wall of the square sleeve A and is provided with spring A for reset of the limiting rod; the two lever blocks with a distance of 180 degrees installed on the inner side of the circular ring B are swung in the two swing grooves on the sliding rod and are one-to-one matched with the two spiral pieces on the cylindrical block at the end of the fixed rod.

[0013] As a further improvement of the present technology, the connecting mechanism B comprises stud, ejector rod, and leaf spring B, wherein the stud cooperating with the internal thread sleeve B on the connecting mechanism A is hinged to the front end of the material carrying kiln car through a vertical hinge shaft; the material carrying kiln car is provided with two leaf springs B for swinging reset of the stud; the stud is provided with two sliding grooves E with a distance of 180 degrees on the external thread; the end of the stud is provided with the ejector rod cooperating with the end face of the sliding rod in the connecting mechanism A.

[0014] As a further improvement of the present technology, the driving mechanism comprises rotating seat A, pipe sleeve, internal thread sleeve A, gear ring, gear A, rotating shaft A, motor A, screw rod, rotating sleeve A, driving block, blocking block, gear D, gear E, rotating shaft B, rotating seat B, rotating sleeve B, motor B, wherein the rotating shaft A is rotatably arranged in the rotating seat A distributed on one side of the kiln body at an interval between any two adjacent kiln car mechanism centers; the rotating shaft A is flexibly connected between any two adjacent rotating shaft A and is driven by the motor A located at the outlet of the cooling kiln; the screw rod is axially slidably arranged in the pipe sleeve mounted on each rotating seat A, and the internal thread sleeve A matched with the screw rod is rotatably arranged on the pipe sleeve; the gear ring mounted on the internal thread sleeve A is engaged with the gear A mounted on the corresponding rotating shaft A, the driving block and the blocking block axially spaced apart by 180 degrees are mounted on the rotating sleeve A rotatably arranged on the screw rod, and the driving block and the blocking block are matched with the fixed block on the corresponding side of the material carrying kiln car; the rotating sleeve B driven by the motor B is rotatably arranged in the rotating seat A at the outlet of the cooling kiln, and the rotating shaft B rotatably arranged on the rotating seat A is axially slidably arranged in the rotating sleeve B; the rotating seat B on the screw rod is rotatably arranged on the rotating shaft B; the gear D mounted on the rotating sleeve A is engaged with the gear E on the rotating shaft B.

[0015] As a further improvement of the present technology, the rotating shaft A is rotatably arranged on the rotating seat A; the two cross universal joints at the two ends of the rotating shaft A are connected through the telescopic shaft.

[0016] As a further improvement of the present technology, the gear B mounted on one end of the rotating shaft A is engaged with the gear C mounted on the output shaft of the motor A; the gear F mounted on the rotating sleeve B is engaged with the gear G mounted on the output shaft of the motor B.

[0017] Compared with the conventional tunnel kiln roasting equipment, the present application can make the kiln car mechanism circulate in the kiln body by surrounding the three kiln bodies in a ring shape. The present application can avoid the situation that the first and last kiln car mechanisms are flickering or colliding with each other by arranging the driving mechanism on the inner side wall of the three kiln bodies and cooperating with the first and last kiln car mechanisms, thereby effectively protecting the refractory layer formed by the heat-resistant bricks on the kiln car mechanism.

[0018] In addition, the connection between the kiln car mechanisms can be realized without manual operation, and only by pushing the rear kiln car mechanism to the front kiln car mechanism, the connection between the two can be realized, thereby avoiding the harm of high temperature of the kiln body to the workers.

[0019] The present application has the advantages of simple structure and good use effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the schematic diagram of the present application and the overall section.

[0021] Figure 2Figure 2 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft B and the rotating sleeve A.

[0022] Figure 3 Figure 3 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0023] Figure 4 Figure 4 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0024] Figure 5 Figure 5 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft B and the rotating sleeve A.

[0025] Figure 6 Figure 6 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft B and the rotating sleeve A.

[0026] Figure 7 Figure 7 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0027] Figure 8 Figure 8 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0028] Figure 9 Figure 9 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0029] Figure 10 Figure 10 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0030] Figure 11 Figure 11 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0031] Figure 12 Figure 12 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0032] Figure 13 Figure 13 is a cross-sectional view of the transmission mechanism from two perspectives of the transmission between the rotating shaft A and the pipe sleeve.

[0033] Labels in the diagram: 1. Preheating kiln; 2. Firing kiln; 3. Cooling kiln; 4. Air circulation system; 5. Track; 6. Drive mechanism; 7. Rotary seat A; 8. Pipe sleeve; 9. Guide key A; 10. Internal threaded sleeve A; 11. Gear ring; 12. Gear A; 13. Rotating shaft A; 14. Gear B; 15. Gear C; 16. Motor A; 17. Universal joint; 18. Telescopic shaft; 19. Screw; 20. Keyway A; 21. Rotary sleeve A; 22. Drive block; 23. Gear D; 24. Gear E; 25. Shaft B; 26. Guide key B; 27. Rotary seat B; 28. Rotating sleeve B; 29. ​​Keyway B; 30. Gear F; 31. Gear G; 32. Motor B; 33. Kiln car mechanism; 34. Material-carrying kiln car; 35. Wheel; 36. Fixing block; 37. Connecting mechanism B; 38. Stud; 39. Slide E; 40. Push rod; 41. Leaf spring B; 42. Connection Mechanism A; 43. Square sleeve A; 44. Guide groove A; 45. Slide groove A; 46. Slide groove B; 47. Guide groove B; 48. Ring sleeve A; 49. Limiting rod; 50. Spring A; 51. Locking block; 52. Guide block B; 53. Lever A; 54. Spring B; 55. Leaf spring A; 56. Square sleeve B; 57. Guide groove C; 58. Guide block A; 59. Spring C; 60. Fixing rod; 61. Cylindrical block; 62. Spiral blade; 63. Slide rod; 64. Swing groove; 65. Ring groove A; 66. Guide groove D; 67. Guide block C; 68. Spring D; 69. Sliding sleeve; 70. Ring groove B; 71. Guide block D; 72. Spiral spring; 73. Ring sleeve B; 74. Ring groove C; 75. Sliding groove C; 76. Internal threaded sleeve B; 77. Sliding groove D; 78. Spring E; 79. Circular ring A; 80. Circular ring B; 81. Toggle rod B; 82. Toggle block; 85. Blocking block. Detailed Implementation

[0034] The accompanying drawings are schematic diagrams illustrating embodiments of the present invention to facilitate understanding of the structural operating principle. Specific product structures and dimensions can be determined based on the usage environment and conventional technologies.

[0035] like Figure 1 As shown, it includes a preheating kiln 1, a firing kiln 2, a cooling kiln 3, a drive mechanism 6, and a kiln car mechanism 33, wherein, as... Figure 6 , 7 As shown, the connecting mechanism B37 at the tail end of the kiln car mechanism 33 cooperates with the connecting mechanism A42 at the head end of the adjacent kiln car mechanism 33 to connect the two kiln car mechanisms 33; as Figure 1 As shown, several kiln car mechanisms 33, connected in sequence and carrying lepidolite, pass sequentially through a preheating kiln 1, a calcining kiln 2, and a cooling kiln 3 distributed along the circumference to complete the calcination of the lepidolite. The preheating kiln 1, calcining kiln 2, and cooling kiln 3 distributed along the circumference can realize the cyclic use of the kiln car mechanisms 33 that have completed calcination; a drive mechanism 6 is installed on one side of the kiln body, which synchronously starts and synchronously stops on a circular track 5 for all kiln car mechanisms 33; asFigure 1 、 7 As shown in the figure, the rear kiln car mechanism 33 can be connected to the front kiln car mechanism 33 by artificial pushing, and the rear kiln car mechanism 33 can be disconnected from the front kiln car mechanism 33 by artificial pulling.

[0036] As shown in the figure, Figure 1 The air circulation system 4 is installed between the preheating kiln 1 and the cooling kiln 3 to circulate the heat of the kiln car mechanism 33 and the lithium mica carried by the kiln car mechanism 33 into the preheating kiln 1.

[0037] As shown in the figure, Figure 6 The kiln car mechanism 33 includes a material carrying kiln car 34, a wheel 35, a connection mechanism A 42, and a connection mechanism B 37, wherein, as shown in the figure, Figure 6 、 7 The space for filling lithium mica on the material carrying kiln car 34 is made of refractory bricks, and the wheel 35 is installed on the material carrying kiln car 34 to cooperate with the annular track 5; the material carrying kiln car 34 has a connection mechanism A 42 at the front end and a connection mechanism B 37 at the rear end which cooperates with the connection mechanism A 42 on the adjacent material carrying kiln car 34.

[0038] As shown in the figure, Figure 7 The connection mechanism A 42 includes a square sleeve A 43, a locking block 51, a lever A 53, a spring B 54, a leaf spring A 55, a square sleeve B 56, a spring C 59, a fixed rod 60, a sliding rod 63, a spring D 68, a sliding sleeve 69, a spiral spring 72, a ring sleeve B 73, a spring E 78, a circular ring B 80, wherein, as shown in the figure, Figure 7 、 9 , 13, the square sleeve A 43 is hinged to the rear end of the material carrying kiln car 34 through a vertical hinge shaft, and the material carrying kiln car 34 has two leaf springs A 55 for swinging reset of the square sleeve A 43; the square sleeve B 56 is horizontally slid in the square sleeve A 43 and is provided with a spring C 59 for reset of the square sleeve B 56; the locking block 51 for friction locking of the square sleeve B 56 moving outward of the square sleeve A 43 is slid in the two sliding grooves B 46 of the inner wall of the square sleeve A 43 and is provided with a spring B 54 for reset of the locking block 51, and the lever A 53 for manual unlocking of the locking block 51 locking the square sleeve B 56 is provided on the locking block 51; the square sleeve A 43 is provided with a structure for locking the initial position of the square sleeve B 56; as shown in the figure, Figure 7 、 11As shown, the square sleeve B56 has a slide rod 63 and a spring D68 for resetting the slide rod 63, the slide rod 63 has a circular ring B80 driven by the fixed rod 60 in the square sleeve B56 and axially slides a sleeve 69; the sleeve 69 has a ring sleeve B73 nested and rotated thereon and is provided with a spiral spring 72 for rotating and resetting the ring sleeve B73; the slide rod 63 has a spring E78 nested for axially resetting the ring sleeve B73; four shift rods B81 uniformly distributed on the end face of the circular ring B80 axially slide in the four slide grooves C75 on the end face of the ring sleeve B73; the end face of the ring sleeve B73 has an internally threaded sleeve B76, and the internally threaded sleeve B76 has two slide grooves D77 180 degrees apart in circumference.

[0039] As shown in Figure 6 , 9 , the ring sleeve A48 at the two slide grooves A45 of the side wall of the square sleeve A43 slides a limiting rod 49 matched with the end face of the square sleeve B56 and is provided with a spring A50 for resetting the limiting rod 49; as shown in Figure 8 , 10 , 13, the two shift blocks 82 180 degrees apart in circumference installed on the inner side of the circular ring B80 swing in the two swing grooves 64 on the slide rod 63 and correspondingly match the two spiral pieces 62 on the cylindrical block 61 at the end of the fixed rod 60.

[0040] As shown in Figure 7 , 11 , 12, the connecting mechanism B37 includes a stud 38, a top rod 40, and a leaf spring B41, wherein the stud 38 matched with the internally threaded sleeve B76 on the connecting mechanism A42 is hinged to the front end of the material carrying kiln car 34 through a vertical hinge shaft; the material carrying kiln car 34 has two leaf springs B41 for swing resetting the stud 38; the stud 38 has two slide grooves E39 180 degrees apart in circumference on the outer thread; the stud 38 has a top rod 40 at the end matched with the end face of the slide rod 63 in the connecting mechanism A42.

[0041] As shown in Figure 1 , 2 , 3, the driving mechanism 6 includes a rotating seat A7, a tube sleeve 8, an internally threaded sleeve A10, a gear ring 11, a gear A12, a rotating shaft A13, a motor A16, a screw rod 19, a rotating sleeve A21, a driving block 22, a blocking block, a gear D23, a gear E24, a rotating shaft B25, a rotating seat B27, a rotating sleeve B28, and a motor B32, wherein as shown in Figure 1 , 3, 4, each rotating seat A7 in the cooling kiln 3 is rotatably connected with a rotating shaft A13; any two adjacent rotating shafts A13 are flexibly connected and driven by a motor A16 located at the outlet of the cooling kiln 3; a screw rod 19 is axially slidably arranged in a pipe sleeve 8 mounted on each rotating seat A7, and an internally threaded sleeve A10 is rotatably arranged on the pipe sleeve 8 and cooperates with the screw rod 19; a gear ring 11 mounted on the internally threaded sleeve A10 is engaged with a gear A12 mounted on the corresponding rotating shaft A13; a driving block 22 and a blocking block, which are circumferentially spaced 180 degrees and axially spaced, are mounted on a rotating sleeve A21 rotatably arranged on the screw rod 19, and the driving block 22 and the blocking block cooperate with a fixed block 36 on the corresponding side of the material carrying kiln car 34; as shown in Figure 1 、 2 , 5, a rotating sleeve B28 is rotatably arranged in the rotating seat A7 at the outlet of the cooling kiln 3 and is driven by a motor B32, and a rotating shaft B25 is axially slidably arranged in the rotating sleeve B28 and circumferentially rotatably arranged in the other rotating seat A7; a rotating seat B27 on the screw rod 19 is rotatably connected with the rotating shaft B25; a gear D23 mounted on the rotating sleeve A21 is engaged with a gear E24 mounted on the rotating shaft B25.

[0042] As shown in Figure 2 、 3 , the rotating shaft A13 is provided with a cross universal joint 17 at each end; the two cross universal joints 17 at the ends of any two adjacent rotating shafts A13 are connected by a telescopic shaft 18.

[0043] As shown in Figure 4 、 5 , the gear B14 mounted on one end of the rotating shaft A13 is engaged with the gear C15 mounted on the output shaft of the motor A16; the gear F30 mounted on the rotating sleeve B28 is engaged with the gear G31 mounted on the output shaft of the motor B32.

[0044] As shown in Figure 7 、 9 , the two guide blocks A58 symmetrically mounted on the square sleeve B56 are respectively slidably arranged in the two guide grooves A44 in the inner wall of the square sleeve A43. As shown in Figure 7 、 9 , 13, the two guide blocks B52 symmetrically mounted on the locking block 51 are respectively slidably arranged in the two guide grooves B47 in the inner wall of the corresponding sliding groove B46. As shown in Figure 7 、 10 , the two guide blocks C67 symmetrically mounted on the sliding rod 63 are respectively slidably arranged in the two guide grooves C57 in the inner wall of the square sleeve B56. As shown in Figure 3 , the two guide keys A9 symmetrically mounted in the pipe sleeve 8 are respectively slidably arranged in the two key grooves A20 on the corresponding screw rod 19. As shown in Figure 5As shown, two guide keys B26 symmetrically installed on the rotating shaft B25 slide in two key grooves B29 on the inner wall of the rotating sleeve B28. Figure 10 , 12 As shown, two guide blocks D71 symmetrically distributed on the inner wall of the sliding sleeve 69 slide in two guide grooves D66 on the inner wall of the ring groove A65 on the sliding rod 63. Figure 7 , 11 As shown, the ring convex on the inner wall of the ring sleeve B73 rotates in the ring groove B70 on the sliding sleeve 69; the volute spring 72 is located in the ring groove C74 on the ring convex on the inner wall of the ring sleeve B73. Figure 7 As shown, one end of the volute spring 72 is connected to the inner wall of the ring groove C74, and the other end is connected to the inner wall of the ring groove B70. One end of the spring E78 is connected to the ring A79 on the sliding rod 63, and the other end is connected to the inner wall of the ring sleeve B73.

[0045] The motor A16 and the motor B32 in the present application both use existing technologies.

[0046] The working process of the present application: in the initial state, the driving block 22 and the blocking block on each rotating sleeve A21 in the driving mechanism 6 are in the same horizontal plane, and the blocking block is in the state of cooperating with the fixed block 36 on the kiln car mechanism 33. The spring E78 in the connecting mechanism A42 of the kiln car mechanism 33 is in a stretched state, the sliding sleeve 69 is located at the limit position in the ring groove A65 on the sliding rod 63, the volute spring 72 is in a compressed state, the two shift blocks 82 are respectively located at the limit position in the corresponding swing groove 64, the sliding groove D77 in the inner threaded sleeve B76 is axially opposite to the two threaded shafts of the stud 38 on the connecting mechanism B37. The spring A50, the spring B54, the spring C59 and the spring D68 are all in a compressed state. The two spiral pieces 62 in the connecting mechanism A42 are respectively axially corresponding to the two shift blocks 82. The two lock blocks 51 in the connecting mechanism A42 are abutted to the outer wall of the square sleeve B56 under the action of the spring B54. The inclined surfaces at the ends of the two limit rods 49 are abutted to the end faces of the square sleeve B56. The square sleeve A43 in the connecting mechanism A42 is in a state perpendicular to the end face of the kiln car mechanism 33 under the action of the two compression springs A55, and the top rod 40 and the stud 38 in the connecting mechanism B37 are in a state perpendicular to the end face of the kiln car mechanism 33 under the action of the two compression springs B41.

[0047] When the lithium mica material needs to be roasted by the present application, firstly, the lithium mica material is filled in the kiln car mechanism 33 and pulled into the preheating kiln 1 by the machine from the preheating kiln 1 entrance, when the fixed block 36 on the kiln car mechanism 33 filled with the material meets the first blocking block in the driving mechanism 6, the motor A16 in the driving mechanism 6 is started, at this time, most of the car body of the kiln car mechanism 33 filled with the material enters the preheating kiln 1. The motor A16 in the driving mechanism 6 drives all the rotating shafts A13 to rotate synchronously through the corresponding gears C15, gears B14, the rotating shafts A13 drive the gears A12 on them to rotate synchronously, the gears A12 drive the corresponding internal threaded sleeves A10 to rotate relative to the corresponding pipe sleeves 8 through the gear rings 11, the internal threaded sleeves A10 are axially retracted into the pipe sleeves 8 through the corresponding screw rods 19, the screw rods 19 drive the rotating shafts B25 which are in rotational cooperation with them to move axially synchronously through the rotating seats B27 on them, at the same time, the screw rods 19 drive the blocking blocks and the driving blocks 22 to move axially synchronously slowly through the rotating sleeves A21, the blocking blocks buffer and stop the kiln car mechanism 33. With the slow stop of the kiln car mechanism 33, the running speed of the motor A16 gradually decreases and finally stops, the kiln car mechanism 33 filled with the material stops slowly with the stop of the blocking blocks and the car body of the kiln car mechanism 33 basically completely enters the preheating kiln 1.

[0048] Then, the second kiln car mechanism 33 filled with the material is pushed to connect with the first kiln car mechanism 33 entering the preheating kiln 1 along the track 5 tangent to the track 5 in the preheating kiln 1, the first kiln car mechanism 33 entering the preheating kiln 1 cannot move under the blocking of the blocking blocks.

[0049] The connection process of the two kiln car mechanisms 33 is as follows: when the top rod 40 on the connection mechanism B37 in the rear kiln car mechanism 33 meets the end surface of the slide rod 63 in the connection mechanism A42 in the front kiln car mechanism 33, the studs 38 on the connection mechanism B37 completely enter the internal threaded sleeves B76 in the ring sleeves B73 axially. With the continuous forward movement of the rear kiln car mechanism 33 under the pushing, the top rod 40 on the connection mechanism B37 drives the slide rod 63 and all the parts on the slide rod 63 to move in the direction of the ring sleeve B56, the spring D68 is further compressed. The two prongs 82 begin to interact with the two spiral pieces 62 respectively and drive the circular ring B80 to rotate relative to the slide rod 63 under the action of the spiral pieces 62, the circular ring B80 drives the ring sleeve B73 to rotate relative to the slide sleeve 69 through the four prongs B81 on it, the spiral spring 72 is further compressed. The ring sleeve B73 drives the internal threaded sleeves B76 to thread with the threads on the studs 38, the ring sleeve B73 moves axially relative to the slide rod 63, the spring E78 is further stretched.

[0050] When the ring sleeve B73 rotates 90 degrees relative to the slide rod 63, the two sections of threads in the inner threaded sleeve B76 are fully screwed with the two sections of threads on the stud 38, the two push blocks 82 swing to the limit positions of the corresponding swing grooves 64 respectively, the axial movement and the circumferential rotation of the ring sleeve B73 relative to the slide rod 63 stop, and the contraction movement of the slide rod 63 into the square sleeve B56 stops.

[0051] With the continuous advancement of the rear kiln car mechanism 33, the square sleeve B56 starts to contract into the square sleeve A43 against the two limit rods 49, the spring C59 is further compressed, and the two springs A50 are further compressed. The successive compression of the spring C59 and the spring A50 effectively buffers the connection of the rear kiln car mechanism 33 to the front kiln car mechanism 33, avoiding damage to the refractory layers on the two kiln car mechanisms 33 due to impact during the connection of the two kiln car mechanisms 33.

[0052] When the spring A is compressed to the limit, the movement of the rear kiln car mechanism 33 stops, and the connection of the two kiln car mechanisms 33 is completed.

[0053] Then, the motor B32 is started, the motor B32 drives the rotating sleeve B28 to rotate through the gear G31 and the gear F30, the rotating sleeve B28 drives all the rotating shafts B25 to rotate synchronously, each rotating shaft B25 drives the gear E24 on it to rotate synchronously, the gear E24 drives the driving block 22 and the blocking block on the rotating sleeve A21 to rotate 180 degrees relative to the screw rod 19 synchronously through the corresponding gear D23 and the rotating sleeve A21, so that the driving block 22 on the rotating sleeve A21 is located behind the fixed block 36 on the first kiln car mechanism 33 entering the preheating kiln 1.

[0054] The motor A16 in the driving mechanism 6 is started, the motor A16 drives all the screw rods 19 in the driving mechanism 6 to contract axially into the corresponding pipe sleeve 8 synchronously through a series of transmission belts, the screw rod 19 drives the first kiln car mechanism 33 entering the preheating kiln 1 to start advancing through the interaction of the driving block 22 on the rotating sleeve A21 and the fixed block 36 on the kiln car mechanism 33, thereby reducing the power requirement for mechanically pulling the kiln car mechanism 33 to advance. At the same time, the rear kiln car mechanism 33 is reset through the connecting mechanism B37, the inner threaded sleeve B76, and the slide sleeve 69 to drive the slide rod 63 relative to the square sleeve B56, because the torque generated by the spiral spring 72 cannot drive the inner threaded sleeve B76 on the ring sleeve B73 to rotate off the stud 38, and further the ring sleeve B73 will not produce directional rotation relative to the slide rod 63 and the stud 38, thereby ensuring that the effective threaded connection of the inner threaded sleeve B76 and the stud 38 is not released.

[0055] When the slide bar 63 is reset relative to the square sleeve B56, the slide bar 63 drives the square sleeve B56 to have a tendency to move outwardly relative to the square sleeve A43. Since the two locking blocks 51 generate a large frictional locking to the square sleeve B56 moving outwardly relative to the square sleeve A43 under the action of the spring B54, the square sleeve B56 will not slide outwardly relative to the square sleeve A43. Thus, the effective connection of the connection mechanism B37 and the connection mechanism A42 will not be released when the front kiln car mechanism 33 is started. At this time, the front kiln car mechanism 33 started for a short time starts to drive the rear kiln car mechanism 33 to move forward synchronously through the connection mechanism B37 and the connection mechanism A42.

[0056] When the two kiln car mechanisms 33 are started slowly and synchronously for a short time, the pulling force of the mechanical pulling of the two kiln car mechanisms 33 is small, which effectively reduces the power requirement of the mechanical pulling. At this time, the motor A16 in the driving mechanism 6 is started, and the motor A16 drives the rotating sleeve A21 on the screw rod 19 to reset axially through a series of transmissions. After the rotating sleeve A21 is reset axially relative to the pipe sleeve 8, the motor B32 in the driving mechanism 6 is started, and the motor B32 drives the driving block 22 and the blocking block on the rotating sleeve A21 to rotate 180 degrees relative to the screw rod 19, so that the driving block 22 and the blocking block on the rotating sleeve A21 return to the initial state.

[0057] When most of the car body of the second kiln car mechanism 33 enters the preheating kiln 1, the fixed blocks 36 on the two kiln car mechanisms 33 meet the two blocking blocks on the driving mechanism 6 at the same time. At this time, the motor A16 in the driving mechanism 6 is started again, and the motor A16 drives the blocking blocks to move axially from fast to slow and finally realize the synchronous buffer stop of the two kiln car mechanisms 33, avoiding the mutual collision of the two kiln car mechanisms 33 during the stopping process in the kiln body due to inertia.

[0058] Then the third kiln car mechanism 33 filled with materials is connected to the second kiln car mechanism 33 entering the preheating kiln 1, and the connection process is the same as the connection process of the second kiln car mechanism 33 to the first kiln car mechanism 33, which will not be described here.

[0059] Each connection of a kiln car mechanism 33 requires all kiln car mechanisms 33 in the kiln body to realize the walking and stopping of one car position. The connection of any kiln car mechanism 33 only needs to manually push the new kiln car mechanism 33 into the kiln car mechanism 33 in the kiln body to realize the buffer connection between the kiln car mechanisms 33. At the same time, due to the connection of the new kiln car mechanism 33, the walking and stopping of all kiln car mechanisms 33 in the kiln body will not cause the mutual collision of all connected kiln car mechanisms 33 due to inertia during the walking and stopping, thereby protecting the refractory layer on the kiln car mechanism 33 from being damaged.

[0060] When the kiln car mechanism 33 enters the cooling kiln 3 from the baking kiln 2, the heat contained in the kiln car mechanism 33 and the lithium mica material carried by the kiln car mechanism 33 enters the preheating kiln 1 through the air circulation system 4 to effectively preheat the lithium mica material in the kiln car mechanism 33 newly entering the preheating kiln 1.

[0061] When the kiln car mechanism 33 comes out of the cooling kiln 3, the connection mechanism B 37 and the connection mechanism A 42 are separated by rotating the ring sleeve B 73 away from the stud 38 through a tool, and the energy of the spiral spring 72 and the spring E 78 is released at the same time. The ring sleeve B 73 drives the two prongs 82 in the swing groove 64 to swing back to the original position through the four prongs B 81 and the ring B 80.

[0062] After the connection mechanism B 37 and the connection mechanism A 42 are separated, the kiln car from the cooling kiln 3 is pulled away by a machine to unload the material. After the material is unloaded, the two prongs A 53 on the connection mechanism A 42 are manually actuated to release the locking of the two locking blocks 51 to the ring sleeve B 56, and the ring sleeve B 56 is instantaneously reset under the reset action of the spring C 59. The two limiting rods 49 are instantaneously reset under the reset action of the corresponding spring A 50 and locked to the initial position of the ring sleeve B 56 in the ring sleeve A 43.

[0063] In summary, the beneficial effects of the present application are: the three kiln bodies in a ring shape can be used in the kiln car mechanism 33. The driving mechanism 6 arranged on the inner wall of the three kiln bodies and the cooperation of the several kiln car mechanisms 33 connected in head-to-tail can avoid the situation that the several kiln car mechanisms 33 connected in head-to-tail flash or collide with each other due to walking and stopping in the kiln body, thereby effectively protecting the refractory layer formed by the heat-resistant bricks on the kiln car mechanism 33.

[0064] In addition, the connection between the kiln car mechanisms 33 can be realized without manual operation, and only by pushing the rear kiln car mechanism 33 to move forward to the front kiln car mechanism 33, the connection of the two can be realized, thereby avoiding the harm of high temperature of the kiln body to the workers.

Claims

1. A tunnel kiln firing device, characterized by: It includes preheating kiln, calcination kiln, cooling kiln, driving mechanism, kiln car mechanism, wherein the connecting mechanism B at the tail end of the kiln car mechanism cooperates with the connecting mechanism A at the head end of the adjacent kiln car mechanism to realize the connection of the two kiln car mechanisms; a plurality of kiln car mechanisms connected in sequence and carrying lithium mica pass through the preheating kiln, calcination kiln and cooling kiln distributed along the circumference in sequence to complete the calcination of lithium mica; the preheating kiln, calcination kiln and cooling kiln distributed along the circumference can realize the recycling use of the kiln car mechanism which completes the calcination; the driving mechanism of all kiln car mechanisms on the synchronous starting and synchronous slow stop ring track is installed on one side of the kiln body; the rear kiln car mechanism can be connected to the front kiln car mechanism outside the kiln body by artificial pushing, and the rear kiln car mechanism can be disconnected from the front kiln car mechanism by artificial pulling; The kiln car mechanism includes a material carrying kiln car, a wheel, a connecting mechanism A and a connecting mechanism B, wherein the space for filling lithium mica on the material carrying kiln car is made of refractory bricks, and the wheel is installed on the material carrying kiln car and cooperates with the ring track; the material carrying kiln car has the connecting mechanism A at the head end, and has the connecting mechanism B at the tail end which cooperates with the connecting mechanism A on the adjacent material carrying kiln car; The connecting mechanism A includes a square sleeve A, a lock block, a lever A, a spring B, a leaf spring A, a square sleeve B, a spring C, a fixed rod, a sliding rod, a spring D, a sliding sleeve, a spiral spring, a ring sleeve B, a spring E and a circular ring B, wherein the square sleeve A is hinged to the tail end of the material carrying kiln car through a vertical hinge shaft, and the material carrying kiln car has two leaf springs A for swinging reset of the square sleeve A; the square sleeve B is horizontally slid in the square sleeve A and is provided with the spring C for reset of the square sleeve B; the lock block for friction locking the square sleeve B moving out of the square sleeve A is slid in the two sliding grooves B on the inner wall of the square sleeve A, and the spring B for reset of the lock block is installed; the lever A for manually releasing the lock block from locking the square sleeve B is provided on the lock block; the square sleeve B has a structure for locking the initial position of the square sleeve B; the sliding rod and the spring D for reset of the sliding rod are horizontally slid in the square sleeve B, the circular ring B driven by the fixed rod in the square sleeve B is nested and rotated on the sliding rod, and the sliding sleeve is axially slid on the sliding rod; the ring sleeve B is nested and rotated on the sliding sleeve, and the spiral spring for reset of the rotation of the ring sleeve B is installed; the spring E for axial reset of the ring sleeve B is nested on the sliding rod; the four levers B uniformly distributed on the end face of the circular ring B are axially slid in the four sliding grooves C on the end face of the ring sleeve B; the end face of the ring sleeve B has an internal thread sleeve B, and the internal thread sleeve B has two sliding grooves D which are 180 degrees apart in the circumferential direction; The limiting rod cooperating with the end face of the square sleeve B is slid in the ring sleeve A at the two sliding grooves A on the side wall of the square sleeve A, and the spring A for reset of the limiting rod is installed; the two lever blocks which are 180 degrees apart in the circumferential direction and installed inside the circular ring B swing in the two swing grooves on the sliding rod and cooperate with the two helical pieces on the cylindrical block at the end of the fixed rod one by one; The connecting mechanism B includes a stud, a top rod and a leaf spring B, wherein the stud cooperating with the internal thread sleeve B on the connecting mechanism A is hinged to the head end of the material carrying kiln car through a vertical hinge shaft; the material carrying kiln car has two leaf springs B for swinging reset of the stud; the stud has two sliding grooves E which are 180 degrees apart in the circumferential direction on the external thread; the top rod cooperating with the end face of the sliding rod in the connecting mechanism A is provided at the end of the stud.

2. A tunnel kiln firing device according to claim 1, characterized in that: The air circulation system is installed between the preheating kiln and the cooling kiln to circulate the heat of the kiln car mechanism and the lithium mica carried by the kiln car mechanism into the preheating kiln.

3. A tunnel kiln firing device as claimed in claim 1, wherein: The driving mechanism comprises rotating seats A, pipe sleeves, internally-threaded sleeves A, gear rings, gear wheels A, rotating shafts A, motors A, screws, rotating sleeves A, driving blocks, blocking blocks, gear wheels D, gear wheels E, rotating shafts B, rotating seats B, rotating sleeves B and motors B, rotating shafts A are rotatably arranged in the rotating seats A distributed on one side of the kiln body at any interval between centers of any two adjacent kiln car mechanisms; the rotating shafts A are flexibly connected between any two adjacent rotating shafts A and are driven by the motors A located at the outlet of the cooling kiln; the screws are axially slid in the pipe sleeves mounted on each rotating seat A, the internally-threaded sleeves A are rotatably arranged on the pipe sleeves, the gear rings mounted on the internally-threaded sleeves A are engaged with the gear wheels A mounted on the corresponding rotating shafts A, the driving blocks and the blocking blocks axially spaced apart at an interval are arranged on the rotating sleeves A rotatably arranged on the screws at an interval of 180 degrees in the circumferential direction, the driving blocks and the blocking blocks are engaged with the fixed blocks on the corresponding side of the material carrying kiln car, the rotating sleeves B are rotatably arranged in the rotating seats A at the outlet of the cooling kiln and are driven by the motors B, the rotating shafts B are axially slid in the rotating sleeves B and are rotatably arranged on the rotating seats A, the rotating seats B on the screws are rotatably arranged on the rotating shafts B, the gear wheels D mounted on the rotating sleeves A are engaged with the gear wheels E on the rotating shafts B.

4. A tunnel kiln firing device according to claim 3, characterized in that: Cross universal joints are mounted on both ends of the rotating shafts A; the cross universal joints on both ends of any two adjacent rotating shafts A are connected by telescopic shafts.

5. A tunnel kiln firing device as claimed in claim 3, wherein: The gear wheels B mounted on one end of the rotating shafts A are engaged with the gear wheels C mounted on the output shafts of the motors A; the gear wheels F mounted on the rotating sleeves B are engaged with the gear wheels G mounted on the output shafts of the motors B.

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