System with anti-slagging secondary air spray pipe

Abstract

The invention discloses a system with an anti-slagging secondary air spray pipe. The system comprises a rotary kiln, the secondary air spray pipe and a vibration exciter. One end of the rotary kiln is a feeding end, and the other end is a discharging end. The air inlet end of the secondary air spraying pipe protrudes out of the kiln wall of the rotary kiln, and the air outlet end of the secondary air spraying pipe penetrates through the kiln wall of the rotary kiln and then extends into the rotary kiln. The vibration exciter is arranged on a pipe body, located outside the rotary kiln, of the secondary air spray pipe. According to the system with the anti-slagging secondary air spray pipe, the vibration exciter is arranged on the secondary air spray pipe, deslagging treatment is conducted on the secondary air spray pipe of the rotary kiln, the situation that the spraying effect of secondary air is affected due to slagging is avoided, and the production efficiency and the heat transfer efficiency are improved.

Description

Technical Field

[0001] The present invention relates to a system of a secondary air nozzle, specifically to a system with an anti-slagging secondary air nozzle, belonging to the sintering technology field. Background Art

[0002] Rotary kiln roasting is a widely used sintering process in the metallurgical industry, mainly used for various heat treatment and smelting processes in the metallurgical industry, and materials are sintered, reduced or oxidized at high temperatures, such as heat treatment and smelting of substances such as steel, non-ferrous metals, ferroalloys, etc.

[0003] In the rotary kiln roasting process, secondary air is often introduced to improve the combustion efficiency, ensure that the material continues to burn when it is not completely sintered and mature, thereby increasing the sintering rate. At the same time, the secondary air enters the kiln body in the middle section of the rotary kiln sintering to provide sufficient heat and oxygen for the intermediate product, enabling it to burn rapidly and continuously until it is sintered and mature. In addition, by reasonably controlling the amount and temperature of the secondary air, the production effect of the rotary kiln can be optimized to ensure the smooth progress of the reaction in the kiln.

[0004] Due to the relatively low temperature of the introduced secondary air compared to the roasting temperature in the kiln, the existing secondary air nozzles of rotary kilns are prone to slagging and sticking materials at the nozzle position, affecting production. In severe cases, the slag is too large, resulting in problems of blocking air and materials, affecting production efficiency. At the same time, there is a lack of real-time slagging monitoring means, and the blowing parameters cannot be adjusted in time, resulting in the continuous thickening of the slag layer on the kiln wall, affecting the heat transfer efficiency and increasing energy consumption.

[0005] The existing technical solutions usually use static baffle components to prevent materials from directly entering the outside. However, in the actual production process, it is difficult to avoid the high temperature that causes the material to be in a semi-molten state, and slagging is inevitable. Moreover, it is difficult for the existing mechanical slag removal devices to intervene, and frequent kiln shutdown for slag cleaning seriously restricts the production continuity.

[0006] Therefore, it is urgent to develop a secondary air nozzle system with dynamic adjustment and real-time monitoring to improve the thermal stability in the kiln and the sintering quality of materials. Summary of the Invention

[0007] Aiming at the problems in the prior art that the secondary air nozzles are prone to slagging and sticking materials at the nozzle position and cannot remove slag in time. The present invention provides a system with an anti-slagging secondary air nozzle. By setting an exciter on the secondary air nozzle, it aims to solve the problems of easy slagging of the secondary air nozzles in the prior art, affecting production efficiency and heat transfer efficiency.

[0008] According to an embodiment of the present invention, a system with an anti-slagging secondary air nozzle is provided.

[0009] A system with an anti-slagging secondary air nozzle, the system includes a rotary kiln, a secondary air nozzle and an exciter. One end of the rotary kiln is the feeding end and the other end is the discharging end. The air inlet end of the secondary air nozzle protrudes outside the kiln wall of the rotary kiln, and the air outlet end of the secondary air nozzle passes through the kiln wall of the rotary kiln and extends into the interior of the rotary kiln. The exciter is arranged on the pipe body of the secondary air nozzle located outside the rotary kiln.

[0010] Preferably, the system further includes a first elastic member. There is a support portion protruding radially outward on the outer side wall of the secondary air nozzle located outside the rotary kiln. The lower part of the first elastic member is connected to the outer wall of the rotary kiln, and the upper part of the first elastic member is connected to the lower surface of the support portion. Preferably, the support portion is an annular wing plate.

[0011] Preferably, the first elastic member is a spring.

[0012] Preferably, the exciter is arranged at the end of the secondary air nozzle located outside the rotary kiln, and the air inlet of the secondary air nozzle is arranged on the pipe wall of the secondary air nozzle located outside the rotary kiln.

[0013] Preferably, the secondary air nozzle includes an air inlet pipe and an air spray pipe. The air inlet pipe is located outside the rotary kiln, the air outlet end of the air inlet pipe is communicated with the air inlet end of the air spray pipe, and the air outlet end of the air spray pipe passes through the kiln wall of the rotary kiln and extends into the interior of the rotary kiln. The support portion is arranged on the outer side wall of the air inlet end of the air spray pipe. The exciter is arranged at the end of the air inlet pipe far from the air spray pipe. An air inlet is provided on the pipe wall of the air inlet pipe.

[0014] Preferably, the system further includes a sealing kit. The pipe body of the secondary air nozzle is fixedly connected to the rotary kiln through the sealing kit.

[0015] Preferably, the sealing kit includes a sealing frame and a sealing member. The pipe body of the secondary air nozzle is fixedly connected to the rotary kiln through the sealing frame. The sealing frame is sleeved on the secondary air nozzle and there is a sealing cavity between the sealing frame and the outer side wall of the secondary air nozzle. The sealing member is arranged in the sealing cavity. Preferably, the lower part of the first elastic member is connected to the top of the sealing frame. Preferably, the sealing frame is a rigid frame and the sealing member is a refractory and heat-insulating material.

[0016] Preferably, the sealing kit further includes an anti-blocking material mechanism. The anti-blocking material mechanism has a structure that is wide at both the upper and lower ends and narrow in the middle. The upper part of the anti-blocking material mechanism is arranged in the sealing cavity, the lower part of the anti-blocking material mechanism is arranged outside the sealing cavity, the middle part of the anti-blocking material mechanism is clamped at the connection between the lower part of the sealing frame and the secondary air nozzle through the bottom frame of the sealing frame, and there are gaps between the anti-blocking material mechanism and the sealing frame and the secondary air nozzle.

[0017] Among them, the upper surface of the protruding part at the lower part of the anti-blocking material mechanism is an inclined surface that narrows from bottom to top in the direction of the secondary air nozzle, and the shape of the bottom frame of the sealing frame is adapted to the shape of the upper surface of the lower part of the anti-blocking material mechanism.

[0018] Preferably, the system further includes a slag cleaning device, which includes a slag removal part, a connecting part, and a second elastic member. A sandwich chamber is provided in the pipe wall at the bottom of the secondary air nozzle. An opening communicating with the bottom pipe cavity of the secondary air nozzle is provided on the chamber wall of the sandwich chamber. A second elastic member is provided in the sandwich chamber. The slag removal part is arranged in the bottom pipe cavity of the secondary air nozzle. The side wall of the slag removal part is connected to one end of the connecting part, and the other end of the connecting part passes through the opening and is connected to the second elastic member.

[0019] Among them, a total of 2 to 4 sandwich chambers are provided in the pipe wall at the bottom of the secondary air nozzle, and each sandwich chamber is correspondingly provided with an opening, a second elastic member, and a connecting part connected to the slag removal part. Preferably, the 2 to 4 sandwich chambers are in the same plane and are evenly distributed.

[0020] Preferably, the slag removal part is a circular pipe.

[0021] Preferably, the second elastic member is a spring or a spring piece.

[0022] Preferably, the slag cleaning device further includes a buffer component plate. The buffer component plate is arranged at the opening, the lower part of the buffer component plate is fixedly connected to the pipe wall of the secondary air nozzle at the lower end of the opening, and the upper part of the buffer component plate is a telescopic structure and is connected to the connecting part.

[0023] Preferably, the buffer component plate includes a fixed end plate and a movable end plate. A cavity is provided inside the fixed end plate, a third elastic member is arranged in the cavity, the lower end of the movable end plate is connected to the third elastic member, and the upper end of the movable end plate is connected to the connecting part.

[0024] Preferably, buffer component plates with opposite directions are further provided at the upper end of the opening, the fixed end plate is connected to the upper end of the opening, and the lower end of the movable end plate is connected to the connecting part.

[0025] Preferably, a groove matching the shape of the end of the movable end plate is provided on the connecting part.

[0026] Preferably, the part of the secondary air nozzle including the slag cleaning device is a detachable structure. Preferably, threads are provided in the pipe wall of the secondary air nozzle above the opening, and the lower part and the upper part of the secondary air nozzle are detachably connected by the threads.

[0027] Preferably, the system further includes an infrared detection device. The infrared detection device is arranged on the inner side wall of the secondary air nozzle.

[0028] In the present invention, an exciter is provided on the pipe body of the secondary air nozzle of the rotary kiln. When slagging occurs at the nozzle position of the secondary air nozzle or the secondary air nozzle rotates with the rotary kiln to the upper part of the rotary kiln, the exciter is started to remove the slag at the nozzle position of the secondary air nozzle, so as to achieve the purpose of slag removal and improve the production efficiency of the rotary kiln. Preferably, a support part is provided on the outer wall of the secondary air duct located outside the rotary kiln, and the support part is connected to the outer wall of the rotary kiln through a first elastic member to increase the vibration amplitude of the secondary air duct. Further, the exciter is arranged at the end of the air inlet pipe far from the air supply pipe, so that the secondary air duct vibrates along its axial direction to improve the slag removal efficiency.

[0029] In the present invention, a sealing kit can also be provided at the connection between the secondary air nozzle and the rotary kiln to improve the sealing performance through the sealing kit and avoid material leakage from the rotary kiln. Further, an anti-blocking mechanism is provided at the connection between the lower part of the sealing frame and the secondary air nozzle. When the secondary air nozzle rotates to the upper part of the rotary kiln, the upper end of the anti-blocking mechanism is in close contact with the bottom frame of the sealing frame (such as Figure 5 ), when the secondary air nozzle gradually rotates to the lower part of the rotary kiln, the anti-blocking mechanism slides downward, so that the upper surface of the protruding part of the lower part of the original anti-blocking mechanism is in close contact with the bottom of the bottom frame of the sealing frame (such as Figure 6 ), to avoid fine and small particulate materials in the rotary kiln from entering the inside of the sealing frame.

[0030] In the present invention, a slag cleaning device is preferably provided, wherein the slag cleaning part is arranged in the bottom pipe cavity of the secondary air nozzle and is connected to a second elastic member arranged in the interlayer cavity through a connecting part. When the exciter drives the secondary air nozzle to vibrate up and down, the slag cleaning part will also generate a relative displacement with the secondary air nozzle at the same time to clean the inner side wall and bottom of the secondary air nozzle. Further, a buffer component plate is arranged at the opening, one end of the buffer component plate is connected to the pipe wall of the secondary air nozzle at the lower end of the opening, and the other end of the buffer component plate is connected to the connecting part to prevent fine particulate matter from entering the interlayer cavity of the secondary air nozzle during the movement of the slag cleaning part. Furthermore, the buffer component plate includes a fixed end plate and a movable end plate, and a third elastic member is arranged in the fixed end plate to play a buffering role for the slag cleaning part during the movement and avoid the slag cleaning part from hitting the side wall of the secondary air nozzle. In addition, a buffer component plate can also be arranged at the upper end of the opening to play a role in limiting the slag cleaning part and preventing materials from entering the interlayer cavity. Among them, the slag cleaning part is of a tubular structure and will not affect the injection of secondary air.

[0031] In the present invention, further, at the connection between the connecting part and the movable end plate, a groove matching the shape of the end of the movable end plate is provided to strengthen the sealing of the interlayer cavity. Preferably, the secondary air nozzle is arranged in a structure in which the lower part including the slag cleaning device is movably connected to the upper part, which is convenient for cleaning or replacement.

[0032] In the present invention, an infrared detection device is provided on the inner side wall of the secondary air nozzle to monitor the slag content in the secondary air nozzle in real time.

[0033] Compared with the prior art, the present invention has the following beneficial effects: 1. A system with an anti-slagging secondary air nozzle provided by the present invention is provided with an exciter on the secondary air nozzle to remove slag from the secondary air nozzle of the rotary kiln, avoiding the influence of slagging on the injection effect of secondary air and improving production efficiency and heat transfer efficiency.

[0034] 2. A system with an anti-slagging secondary air nozzle provided by the present invention is provided with a sealing kit, avoiding the problem of possible material leakage in the rotary kiln caused by vibration, and also preventing fine particulate materials from entering the sealing frame, prolonging the service life of the device.

[0035] 3. A system with an anti-slagging secondary air nozzle provided by the present invention is provided with a slag cleaning part in the secondary air nozzle to further remove the slag that cannot be removed by vibration, strengthening the slag cleaning effect of the secondary air nozzle and improving the stability of in-kiln hot processing and the sintering quality of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 FIG. 1 is a first schematic structural diagram of a system with an anti-slagging secondary air nozzle provided by the present invention.

[0037] Figure 2 FIG. 2 is a second schematic structural diagram of a system with an anti-slagging secondary air nozzle provided by the present invention.

[0038] Figure 3 FIG. 3 is a third schematic structural diagram of a system with an anti-slagging secondary air nozzle provided by the present invention.

[0039] Figure 4 FIG. 4 is a fourth schematic structural diagram of a system with an anti-slagging secondary air nozzle provided by the present invention.

[0040] Figure 5 FIG. 5 is an enlarged view of part A in a system with an anti-slagging secondary air nozzle provided by the present invention.

[0041] Figure 6 FIG. 6 is an enlarged view of part A when the rotary kiln rotates to the position where the secondary air nozzle is inverted in a system with an anti-slagging secondary air nozzle provided by the present invention.

[0042] Figure 7 FIG. 7 is a schematic structural diagram of the secondary air nozzle in a system with an anti-slagging secondary air nozzle provided by the present invention.

[0043] Figure 8 FIG. 8 is an enlarged view of part B in a system with an anti-slagging secondary air nozzle provided by the present invention.

[0044] Reference numerals: 1, rotary kiln; 2: secondary air nozzle; 201: support part; 202: air inlet pipe; 203: air spraying pipe; 3: vibrator; 4: first elastic member; 5: sealing kit; 501: sealing frame; 502: seal; 503: anti-blocking mechanism; 6: slag cleaning device; 601: slag removal part; 602: connecting part; 603: second elastic member; 604: sandwich chamber; 605: opening; 606: buffer component plate; 6061: fixed end plate; 6062: movable end plate; 6063: third elastic member; 6064: groove; 607: thread. Detailed implementation mode

[0045] The technical solution of the present invention will be illustrated by way of example below. The scope of protection claimed by the present invention includes but is not limited to the following embodiments.

[0046] According to an embodiment of the present invention, a system with an anti-slagging secondary air nozzle is provided.

[0047] A system with an anti-slagging secondary air nozzle, the system includes a rotary kiln 1, a secondary air nozzle 2 and a vibrator 3. One end of the rotary kiln 1 is the feed end, and the other end is the discharge end. The air inlet end of the secondary air nozzle 2 protrudes outside the wall of the rotary kiln 1, and the air outlet end of the secondary air nozzle 2 passes through the wall of the rotary kiln 1 and extends into the interior of the rotary kiln 1. The vibrator 3 is arranged on the pipe body of the secondary air nozzle 2 located outside the rotary kiln 1.

[0048] Preferably, the system further includes a first elastic member 4. A support part 201 protruding radially outward is provided on the outer side wall of the secondary air nozzle 2 located outside the rotary kiln 1. The lower part of the first elastic member 4 is connected to the outer wall of the rotary kiln 1, and the upper part of the first elastic member 4 is connected to the lower surface of the support part 201. Preferably, the support part 201 is an annular wing plate.

[0049] Preferably, the first elastic member 4 is a spring.

[0050] Preferably, the vibrator 3 is arranged at the end of the secondary air nozzle 2 located outside the rotary kiln 1, and the air inlet of the secondary air nozzle 2 is arranged on the pipe wall of the secondary air nozzle 2 located outside the rotary kiln 1.

[0051] Preferably, the secondary air nozzle 2 includes an air inlet pipe 202 and an air spraying pipe 203. The air inlet pipe 202 is located outside the rotary kiln 1. The air outlet end of the air inlet pipe 202 is communicated with the air inlet end of the air spraying pipe 203. The air outlet end of the air spraying pipe 203 passes through the wall of the rotary kiln 1 and extends into the interior of the rotary kiln 1. The support part is arranged on the outer side wall of the air inlet end of the air spraying pipe 203. The vibrator 3 is arranged at the end of the air inlet pipe 202 far from the air spraying pipe 203. An air inlet is provided on the pipe wall of the air inlet pipe 202.

[0052] Preferably, the system further includes a sealing kit 5. The body of the secondary air nozzle 2 is fixedly connected to the rotary kiln 1 through the sealing kit 5.

[0053] Preferably, the sealing kit 5 includes a sealing frame 501 and a seal 502. The body of the secondary air nozzle 2 is fixedly connected to the rotary kiln 1 through the sealing frame 501. The sealing frame 501 is sleeved on the secondary air nozzle 2, and a sealing cavity is left between the sealing frame 501 and the outer wall of the secondary air nozzle 2. The seal 502 is arranged in the sealing cavity. Preferably, the lower part of the first elastic member 4 is connected to the top of the sealing frame 501. Preferably, the sealing frame 501 is a rigid frame, and the seal 502 is a refractory and heat-insulating material.

[0054] Preferably, the sealing kit 5 further includes an anti-blocking mechanism 503. The anti-blocking mechanism 503 has a structure that is wide at both the upper and lower ends and narrow in the middle. The upper part of the anti-blocking mechanism 503 is arranged in the sealing cavity, the lower part of the anti-blocking mechanism 503 is arranged outside the sealing cavity, the middle part of the anti-blocking mechanism 503 is clamped between the lower part of the sealing frame 501 and the secondary air nozzle 2 through the bottom frame of the sealing frame 501, and gaps are left between the anti-blocking mechanism 503 and the sealing frame 501 and the secondary air nozzle 2.

[0055] Wherein, the upper surface of the protruding part at the lower part of the anti-blocking mechanism 503 is an inclined surface that narrows from bottom to top towards the secondary air nozzle direction, and the shape of the bottom frame of the sealing frame 501 is adapted to the shape of the upper surface of the lower part of the anti-blocking mechanism 503.

[0056] Preferably, the system further includes a slag cleaning device 6. The slag cleaning device 6 includes a slag removal part 601, a connecting part 602, and a second elastic member 603. A sandwich chamber 604 is formed in the wall at the bottom of the secondary air nozzle 2. An opening 605 communicating with the bottom cavity of the secondary air nozzle 2 is formed on the wall of the sandwich chamber 604. The second elastic member 603 is arranged in the sandwich chamber 604. The slag removal part 601 is arranged in the bottom cavity of the secondary air nozzle 2. The side wall of the slag removal part 601 is connected to one end of the connecting part 602, and the other end of the connecting part 602 passes through the opening 605 and is connected to the second elastic member 603.

[0057] Wherein, a total of 2 to 4 sandwich chambers 604 are formed in the wall at the bottom of the secondary air nozzle 2, and each sandwich chamber 604 is correspondingly provided with an opening 605, a second elastic member 603, and a connecting part 602 connected to the slag removal part 601. Preferably, the 2 to 4 sandwich chambers 604 are in the same plane and are evenly distributed.

[0058] Preferably, the slag removal part 601 is a round pipe.

[0059] Preferably, the second elastic member 603 is a spring or a shrapnel.

[0060] Preferably, the slag cleaning device 6 further includes a buffer component plate 606. The buffer component plate 606 is disposed at the opening 605. The lower part of the buffer component plate 606 is fixedly connected to the wall of the secondary air nozzle 2 at the lower end of the opening 605. The upper part of the buffer component plate 606 is a telescopic structure and is connected to the connecting portion 602.

[0061] Preferably, the buffer component plate 606 includes a fixed end plate 6061 and a movable end plate 6062. A cavity is provided inside the fixed end plate 6061. A third elastic member is disposed in the cavity. The lower end of the movable end plate 6062 is connected to the third elastic member 6063. The upper end of the movable end plate 6062 is connected to the connecting portion 602.

[0062] Preferably, a buffer component plate 606 with opposite directions is further provided at the upper end of the opening 605. The fixed end plate 6061 is connected to the upper end of the opening 605. The lower end of the movable end plate 6062 is connected to the connecting portion.

[0063] Preferably, a groove 6064 matching the shape of the end of the movable end plate 6062 is provided on the connecting portion 602.

[0064] Preferably, the part of the secondary air nozzle 2 including the slag cleaning device 6 is a detachable structure. Preferably, a thread 607 is provided inside the wall of the secondary air nozzle 2 above the opening 605. The lower part and the upper part of the secondary air nozzle 2 are detachably connected through the thread 607.

[0065] Preferably, the system further includes an infrared detection device. The infrared detection device is disposed on the inner side wall of the secondary air nozzle 2. Embodiment 1

[0066] A system with an anti-slagging secondary air nozzle, the system includes a rotary kiln 1, a secondary air nozzle 2, and a vibrator 3. One end of the rotary kiln 1 is a feeding end, and the other end is a discharging end. The air inlet end of the secondary air nozzle 2 protrudes outside the wall of the rotary kiln 1. The air outlet end of the secondary air nozzle 2 passes through the wall of the rotary kiln 1 and extends into the interior of the rotary kiln 1. The vibrator 3 is disposed on the pipe body of the secondary air nozzle 2 outside the rotary kiln 1. Embodiment 2

[0067] Repeat Embodiment 1, except that the system further includes a first elastic member 4. A support portion 201 protruding radially outward is provided on the outer side wall of the secondary air nozzle 2 outside the rotary kiln 1. The lower part of the first elastic member 4 is connected to the outer wall of the rotary kiln 1. The upper part of the first elastic member 4 is connected to the lower surface of the support portion 201. The support portion 201 is an annular wing plate.

[0068] The first elastic member 4 is a spring. Embodiment 3

[0069] Repeat Embodiment 2, except that the exciter 3 is arranged at the end of the secondary air nozzle 2 located outside the rotary kiln 1, and the air inlet of the secondary air nozzle 2 is arranged on the pipe wall of the secondary air nozzle 2 located outside the rotary kiln 1. Embodiment 4

[0070] Repeat Embodiment 3, except that the secondary air nozzle 2 includes an air inlet pipe 202 and an air spray pipe 203. The air inlet pipe 202 is located outside the rotary kiln 1, the air outlet end of the air inlet pipe 202 is communicated with the air inlet end of the air spray pipe 203, and the air outlet end of the air spray pipe 203 penetrates through the kiln wall of the rotary kiln 1 and extends into the interior of the rotary kiln 1. The support portion is arranged on the outer side wall of the air inlet end of the air spray pipe 203. The exciter 3 is arranged at the end of the air inlet pipe 202 far from the air spray pipe 203. An air inlet is provided on the pipe wall of the air inlet pipe 202. Embodiment 5

[0071] Repeat Embodiment 4, except that the system further includes a sealing kit 5. The pipe body of the secondary air nozzle 2 is fixedly connected to the rotary kiln 1 through the sealing kit 5.

[0072] The sealing kit 5 includes a sealing frame 501 and a sealing member 502. The pipe body of the secondary air nozzle 2 is fixedly connected to the rotary kiln 1 through the sealing frame 501. The sealing frame 501 is sleeved on the secondary air nozzle 2 and a sealing cavity is left between the sealing frame 501 and the outer side wall of the secondary air nozzle 2. The sealing member 502 is arranged in the sealing cavity. The lower part of the first elastic member 4 is connected to the top of the sealing frame 501. The sealing frame 501 is a rigid frame, and the sealing member 502 is a refractory and heat-insulating material. Embodiment 6

[0073] Repeat Embodiment 5, except that the sealing kit 5 further includes an anti-blocking material mechanism 503. The anti-blocking material mechanism 503 has a structure that is wide at both the upper and lower ends and narrow in the middle. The upper part of the anti-blocking material mechanism 503 is arranged in the sealing cavity, the lower part of the anti-blocking material mechanism 503 is arranged outside the sealing cavity, and the middle part of the anti-blocking material mechanism 503 is clamped at the connection between the lower part of the sealing frame 501 and the secondary air nozzle 2 through the bottom frame of the sealing frame 501. There are gaps between the anti-blocking material mechanism 503 and both the sealing frame 501 and the secondary air nozzle 2.

[0074] Wherein, the upper surface of the protruding part at the lower part of the anti-blocking material mechanism 503 is an inclined surface that narrows from bottom to top towards the secondary air nozzle direction, and the shape of the bottom frame of the sealing frame 501 is adapted to the shape of the upper surface of the lower part of the anti-blocking material mechanism 503. Embodiment 7

[0075] Repeat Example 6, except that the system further includes a slag cleaning device 6. The slag cleaning device 6 includes a slag removal part 601, a connecting part 602, and a second elastic member 603. A sandwich chamber 604 is formed in the tube wall at the bottom of the secondary air nozzle 2. An opening 605 communicating with the bottom cavity of the secondary air nozzle 2 is formed in the wall of the sandwich chamber 604. The second elastic member 603 is disposed in the sandwich chamber 604. The slag removal part 601 is arranged in the bottom cavity of the secondary air nozzle 2. The side wall of the slag removal part 601 is connected to one end of the connecting part 602, and the other end of the connecting part 602 passes through the opening 605 and is connected to the second elastic member 603.

[0076] Among them, a total of 2 sandwich chambers 604 are formed in the tube wall at the bottom of the secondary air nozzle 2, and each sandwich chamber 604 is correspondingly provided with an opening 605, a second elastic member 603, and a connecting part 602 connected to the slag removal part 601. The 2 sandwich chambers 604 are in the same plane and are evenly distributed.

[0077] The slag removal part 601 is a circular tube.

[0078] The second elastic member 603 is a spring. Example 8

[0079] Repeat Example 7, except that the slag cleaning device 6 further includes a buffer component plate 606. The buffer component plate 606 is disposed at the opening 605. The lower part of the buffer component plate 606 is fixedly connected to the tube wall of the secondary air nozzle 2 at the lower end of the opening 605, and the upper part of the buffer component plate 606 is a telescopic structure and is connected to the connecting part 602. Example 9

[0080] Repeat Example 8, except that the buffer component plate 606 includes a fixed end plate 6061 and a movable end plate 6062. A cavity is formed inside the fixed end plate 6061, and a third elastic member is disposed in the cavity. The lower end of the movable end plate 6062 is connected to the third elastic member 6063, and the upper end of the movable end plate 6062 is connected to the connecting part 602. Example 10

[0081] Repeat Example 9, except that a buffer component plate 606 with opposite directions is further provided at the upper end of the opening 605. The fixed end plate 6061 is connected to the upper end of the opening 605, and the lower end of the movable end plate 6062 is connected to the connecting part. Example 11

[0082] Repeat Example 10, except that a groove 6064 matching the shape of the end of the movable end plate 6062 is provided on the connecting part 602. Example 12

[0083] Repeat Example 11, except that the part of the secondary air nozzle 2 that includes the slag cleaning device 6 is a detachable structure. A thread 607 is provided inside the tube wall of the secondary air nozzle 2 above the opening 605, and the lower part and the upper part of the secondary air nozzle 2 are detachably connected by the thread 607. Example 13

[0084] Repeat Example 12, except that the system further includes an infrared detection device. The infrared detection device is arranged on the inner side wall of the secondary air nozzle 2.

Claims

1. A system with an anti-slagging secondary air nozzle, characterized in that: The system comprises a rotary kiln (1), a secondary air nozzle (2) and a vibrator (3); one end of the rotary kiln (1) is a feeding end, and the other end is a discharging end; the air inlet end of the secondary air nozzle (2) protrudes outside the kiln wall of the rotary kiln (1), and the air outlet end of the secondary air nozzle (2) passes through the kiln wall of the rotary kiln (1) and then extends into the interior of the rotary kiln (1); the vibrator (3) is arranged on the pipe body of the secondary air nozzle (2) located outside the rotary kiln (1).

2. The system according to claim 1, characterized in that: The system further comprises a first elastic component (4); a support portion (201) protruding radially outward is provided on the outer tube wall of the secondary air nozzle (2) located outside the rotary kiln (1); the lower portion of the first elastic component (4) is connected to the outer wall of the rotary kiln (1), and the upper portion of the first elastic component (4) is connected to the lower surface of the support portion (201); preferably, the support portion (201) is an annular wing plate; Preferably, the first elastic component (4) is a spring.

3. The system according to claim 2, characterized in that: The vibrator (3) is arranged at the end of a secondary air nozzle (2) located outside the rotary kiln (1), and the air inlet of the secondary air nozzle (2) is arranged on the tube wall of the secondary air nozzle (2) located outside the rotary kiln (1); Preferably, the secondary air nozzle (2) comprises an air inlet pipe (202) and an air jet pipe (203); the air inlet pipe (202) is located outside the rotary kiln (1); the air outlet end of the air inlet pipe (202) is connected to the air inlet end of the air jet pipe (203); the air outlet end of the air jet pipe (203) passes through the kiln wall of the rotary kiln (1) and then extends into the interior of the rotary kiln (1); the support portion (201) is arranged on the outer wall of the air inlet end of the air jet pipe (203); the vibrator (3) is arranged at the end of the air inlet pipe (202) away from the air jet pipe (203); and an air inlet is provided on the wall of the air inlet pipe (202).

4. The system according to any one of claims 1 to 3, characterized in that: The system further comprises a sealing kit (5); the pipe body of the secondary air nozzle (2) is fixedly connected to the rotary kiln (1) via the sealing kit (5); Preferably, the sealing kit (5) comprises a sealing frame (501) and a sealing member (502); the pipe body of the secondary air nozzle (2) is fixedly connected to the rotary kiln (1) via the sealing frame (501); the sealing frame (501) is sleeved on the secondary air nozzle (2) and a sealing cavity is left between the sealing frame (501) and the outer wall of the secondary air nozzle (2); the sealing member (502) is arranged in the sealing cavity; preferably, the lower part of the first elastic component (4) is connected to the top of the sealing frame (501); preferably, the sealing frame (501) is a rigid frame, and the sealing member (502) is a fire-resistant heat-insulating material.

5. The system according to claim 4, characterized in that: The sealing kit (5) further comprises an anti-blocking mechanism (503); the anti-blocking mechanism (503) is a structure with wide upper and lower ends and a narrow middle portion, the upper portion of the anti-blocking mechanism (503) is arranged in the sealing cavity, the lower portion of the anti-blocking mechanism (503) is arranged outside the sealing cavity, the middle portion of the anti-blocking mechanism (503) is clamped at the connection between the lower portion of the sealing frame (501) and the secondary air nozzle (2) through the bottom frame body of the sealing frame (501), and gaps are left between the anti-blocking mechanism (503) and the sealing frame (501) and the secondary air nozzle (2); The upper surface of the lower protruding portion of the anti-blocking mechanism (503) is an inclined surface that narrows from bottom to top in the direction of the secondary air nozzle, and the shape of the bottom frame of the sealing frame (501) is adapted to the shape of the lower upper surface of the anti-blocking mechanism (503).

6. The system according to any one of claims 1 to 5, characterized in that: The system further comprises a slag cleaning device (6), the slag cleaning device (6) comprising a slag cleaning portion (601), a connecting portion (602) and a second elastic component (603); a sandwich chamber (604) is provided in the tube wall at the bottom of the secondary air nozzle (2); an opening (605) communicating with the tube cavity at the bottom of the secondary air nozzle (2) is provided on the cavity wall of the sandwich chamber (604); a second elastic component (603) is provided in the sandwich chamber (604); the slag cleaning portion (601) is arranged in the tube cavity at the bottom of the secondary air nozzle (2); a side wall of the slag cleaning portion (601) is connected to one end of the connecting portion (602), and the other end of the connecting portion (602) passes through the opening (605) and is connected to the second elastic component (603); Wherein, 2 to 4 interlayer chambers (604) are provided in the pipe wall at the bottom of the secondary air nozzle (2), and each interlayer chamber (604) is correspondingly provided with an opening (605), a second elastic component (603), and a connecting portion (602) connected to the slag removal portion (601); preferably, the 2 to 4 interlayer chambers (604) are in the same plane and are evenly distributed; Preferably, the slag removal part (601) is a round tube; Preferably, the second elastic component (603) is a spring or a spring.

7. The system according to claim 6, characterized in that: The slag cleaning device (6) further comprises a buffer component plate (606); the buffer component plate (606) is arranged at the opening (605), the lower part of the buffer component plate (606) is fixedly connected to the wall of the secondary air nozzle (2) at the lower end of the opening (605), and the upper part of the buffer component plate (606) is a retractable structure and is connected to the connecting part (602).

8. The system according to claim 6 or 7, characterized in that: The buffer component plate (606) comprises a fixed end plate (6061) and a movable end plate (6062); a cavity is provided inside the fixed end plate (6061), a third elastic component (6063) is provided in the cavity, the lower end of the movable end plate (6062) is connected to the third elastic component (6063), and the upper end of the movable end plate (6062) is connected to the connecting portion (602); Preferably, a buffer component plate (606) in opposite directions is also provided at the upper end of the opening (605), the fixed end plate (6061) is connected to the upper end of the opening (605), and the lower end of the movable end plate (6062) is connected to the connecting portion.

9. The system according to claim 8, characterized in that: The connecting portion (602) is provided with a groove (6064) matching the shape of the end of the movable end plate (6062); and / or The portion of the secondary air nozzle (2) including the slag cleaning device (6) is a detachable structure; preferably, a thread (607) is provided in the wall of the secondary air nozzle (2) above the opening (605), and the lower and upper parts of the secondary air nozzle (2) are detachably connected via the thread (607).

10. The system according to any one of claims 1 to 9, characterized in that: The system also includes an infrared detection device; the infrared detection device is arranged on the inner side wall of the secondary air nozzle (2).

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