Efficient and energy-saving ceramic tile firing tunnel kiln

Abstract

The invention discloses an efficient and energy-saving ceramic tile firing tunnel kiln applied to the field of tunnel kilns.According to the scheme, high-temperature flue gas is filtered through a capture module A and then conveyed to a designated area through a high-quality pipe or a low-quality pipe for energy recovery work, and excessive adsorption is conducted in the capture module A, so that the energy recovery efficiency is improved; when smoke dust attached to the main sensor group is increased, the smoke dust can be synchronously attached to the attachment net until the clearance overlapping part of the attachment net and the mounting block is completely blocked, at the moment, the mounting block and the attachment net can move towards the direction of the limiting disc under the action of negative pressure, and the standby sensor group is started for temperature detection; and meanwhile, switches of the electromagnetic valve A and the electromagnetic valve B are controlled by detection results of the standby sensor group, so that when the capture module A is saturated, the main sensor group can be switched into the standby sensor group after a period of time, the effective use time of the high-temperature flue gas recovery equipment is prolonged, and time is provided for workers to arrange maintenance work.

Description

Technical Field

[0001] This invention relates to the field of tunnel kilns, and in particular to a high-efficiency and energy-saving tunnel kiln for firing ceramic tiles. Background Technology

[0002] Tunnel kilns are widely used in the firing and production of ceramic products. They are kilns similar to tunnels, constructed of refractory, insulation and building materials, and equipped with kiln cars and other transport vehicles. They are modern continuous firing thermal equipment.

[0003] Chinese invention patent CN114719598B discloses an "Energy-Saving and High-Efficiency Tunnel Kiln". It utilizes the heat of the flue gas in the preheating zone, part of which is used to dry the green body in the kiln, reducing the moisture content of the incoming kiln and making the product temperature uniform. The remaining flue gas heat is properly treated before being discharged into the atmosphere. The heat at the bottom of the kiln car is recovered and used to reduce the temperature difference between the top and bottom of the preheating zone, improve product quality, and shorten the combustion cycle.

[0004] Chinese invention patent CN110260650B discloses "An Environmentally Friendly Tunnel Kiln". Through a heat exchanger, clean air can absorb heat from the exhaust gas, which facilitates preheating of the preheating zone. According to the temperature gradient of the flue gas and the temperature gradient required during the firing of the raw bricks, the raw bricks are slowly heated in the raw brick zone and the preheating zone, which slowly enhances the internal structural strength and reduces the cracking and porosity of the raw bricks under instantaneous high temperature, thus ensuring their quality.

[0005] In practical operation, tunnel kilns utilize flue gas recovery modules to recover high-temperature flue gas from the firing zone and reuse it separately according to its temperature, which is a mature technology. However, in actual production, the high-temperature flue gas in the firing zone is prone to contain a large amount of dust, which can affect the temperature detection system of the flue gas recovery module. If the flue gas recovery module cannot accurately monitor the flue gas temperature, it will affect the efficiency of high-temperature flue gas recovery and reuse, thus affecting the energy-saving effect of the tunnel kiln. Summary of the Invention

[0006] The core of this invention lies in solving the problem of interference with the detection results of a single temperature detection module by smoke and dust in the prior art by cooperating with the main temperature measurement module and the backup temperature measurement module. At the same time, it sets up an automatically replaceable capture module B to increase the effective filtration time of smoke and dust, which can significantly reduce the downtime and maintenance frequency of tunnel kilns and increase the economic efficiency of tunnel kilns.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A high-efficiency and energy-saving ceramic tile firing tunnel kiln filters high-temperature flue gas through a capture module A to remove dust from the flue gas. The flue gas is then transported to a designated area for energy recovery through a high-quality or low-quality pipe. When the capture module A over-adsorbs, dust will simultaneously adhere to the attachment net. The mounting block and the attachment net will move towards the limit plate under negative pressure until the cross-shaped bracket separates from the mounting block, forming an air passage between them. The backup sensor group is activated for temperature monitoring. When the capture module A is saturated, the temperature detection unit can automatically switch to the backup sensor group after a period of time, extending the effective service life of the high-temperature flue gas recovery equipment and providing sufficient time for maintenance.

[0009] Furthermore, the portion of the high-quality tube located on the outside of the kiln body is covered with a matching insulating jacket, reducing heat loss during flue gas transmission and improving energy utilization efficiency.

[0010] Furthermore, a heat-insulating corrugated pipe is fixedly connected between the mounting block and the limiting plate. The heat-insulating corrugated pipe is sleeved on the outside of the compression spring to protect the compression spring and prevent it from failing prematurely due to high temperature.

[0011] Simultaneously (optionally, preferably), a transition pipe is fixedly connected to the end of the flue gas recovery pipe furthest from the high-quality pipe. An extension pipe, matching the position of the flue gas recovery pipe, is fixedly connected to the side wall of the transition pipe furthest from the flue gas recovery pipe. The flue gas recovery pipe, transition pipe, and extension pipe are interconnected. The transition pipe is L-shaped and includes a vertical storage section and a horizontal collection section. A second sealing cover and a first sealing cover are fixedly connected to the openings of the storage section and collection section, respectively. Multiple capture modules B, matching the shape of the transition pipe, are placed inside the collection section. These capture modules B replace the extension pipe. Block B includes a matching upper cover and a lower cover. A porous corrugated tube is fixedly connected between the upper cover and the lower cover. The outer wall of the porous corrugated tube is tightly attached to the inner wall of the transition tube. A capture unit is fixedly connected to the inner wall of the porous corrugated tube. The capture unit includes multiple high-temperature resistant elastic fibers, and adjacent elastic fibers overlap to form a three-dimensional spatial structure. A connecting lock is fixedly connected between two adjacent capture modules B. The part of the connecting lock located inside the capture module B is fixedly tied with an elastic rope. A connecting post and an elastic cable are fixedly connected between the uppermost capture module B and the sealing cover II. The elastic cable is wrapped around the outside of the connecting post.

[0012] Furthermore, prefabricated grooves are carved into the outer wall of the connecting column. By controlling the depth of the prefabricated grooves, the maximum bearing capacity of the connecting column can be controlled, thereby adjusting the number of capture modules B installed at one time.

[0013] Furthermore, the capture module B and the capture unit are made of lightweight materials, and the fixing strength of the multiple elastic ropes decreases from top to bottom, so that the weight of the capture module B and the capture unit themselves is negligible compared with the weight of the smoke and dust being adsorbed. This facilitates the selection of the strength of the elastic ropes for fixing the lock, and also reduces the impact of the weight of the capture module B and the capture unit themselves on the strength of the elastic ropes.

[0014] Furthermore, the lengths of the multiple connecting locks decrease sequentially from top to bottom, and the length difference between two adjacent connecting locks is equal to the initial height of the capture module B, so that when the capture module B is replaced, the standby unit can be accurately moved to the working unit position.

[0015] Furthermore, a pair of guide tubes are provided between the upper and lower covers. Multiple guide holes are drilled on the two guide tubes, and the multiple guide holes are staggered at both ends of the guide tubes. The guide tube on the outer side is fixedly connected to the lower cover, and the guide tube on the inner side is fixedly connected to the upper cover. Without affecting the overall stretching of the capture module B, the distance that the flue gas flows in the upper cover is extended, thereby increasing the filtration effect of the flue gas.

[0016] Furthermore, a pair of partition plates are fixedly connected to the outer wall of the outer guide pipe. The ends of the two partition plates away from the guide pipe are in contact with the porous corrugated pipe, which reduces the flow of flue gas from the periphery of the outer guide pipe and increases the filtration effect of the flue gas.

[0017] Compared with the prior art, the advantages of this invention are:

[0018] This solution uses capture module A to filter high-temperature flue gas, eliminating dust and soot. The gas is then transported to a designated area for energy recovery via either a high-quality or low-quality pipe. When capture module A over-adsorbs dust, increasing the amount of dust attached to the main sensor group, dust will simultaneously adhere to the attachment mesh until the overlap between the attachment mesh and the mounting block is completely blocked. At this point, the mounting block and the attachment mesh will move towards the limit plate under negative pressure, activating the backup sensor group for temperature detection. Simultaneously, the switching of solenoid valves A and B is controlled by the detection results of the backup sensor group. This allows the temperature detection unit to automatically switch to the backup sensor group after a period of time when capture module A is saturated, extending the effective operating time of the high-temperature flue gas recovery equipment and providing sufficient time for maintenance.

[0019] By replacing the original capture module A with multiple automatically replaceable capture modules B, the effective filtration time of flue gas can be increased, which can significantly reduce the frequency of downtime maintenance of tunnel kilns and increase the economic efficiency of tunnel kilns. Attached Figure Description

[0020] Figure 1This is a schematic side cross-sectional view of the energy-saving tunnel kiln according to the first embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the energy-saving tunnel kiln according to the first embodiment of the present invention;

[0022] Figure 3 This is a partial side view of the flue gas recovery pipe according to the first embodiment of the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of the structure at point A;

[0024] Figure 5 for Figure 3 Schematic diagram of the structure at point B;

[0025] Figure 6 This is a schematic diagram of the structural changes caused by the failure of the capture module A at the flue gas recovery pipe in the first embodiment of the present invention.

[0026] Figure 7 This is a partial side view of the flue gas recovery pipe according to the second embodiment of the present invention;

[0027] Figure 8 for Figure 7 Schematic diagram of the structure at point C;

[0028] Figure 9 This is a side sectional view of the capture module B of the capture removal unit according to the second embodiment of the present invention;

[0029] Figure 10 This is a front cross-sectional view of the capture module B of the capture removal unit according to the second embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram showing the structural changes of the capture module B at the flue gas recovery pipe in the second embodiment of the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Kiln body, 2. Flue gas recovery pipe, 3. High-quality pipe, 4. Insulating jacket, 5. Low-quality pipe, 6. Solenoid valve A, 7. Solenoid valve B, 8. Capture module A, 9. Main temperature measurement module, 901. Cross-shaped bracket, 902. Main sensor group, 10. Backup temperature measurement module, 1001. Mounting block, 1002. Backup sensor group, 1003. Limiting post, 1004. Limiting plate, 1005. Heat-insulating corrugated pipe, 1006. Compression spring, 1007. Attachment net, 11. Transition pipe, 12. Extension pipe, 13. Capture module B, 1301. Upper cover, 1302. Lower cover, 1303. Porous corrugated pipe, 1304. Guide pipe, 1305. Divider plate, 14. Capture unit, 15. Connecting lock, 16. Sealing cover one, 17. Sealing cover two, 18. Connecting post, 19. Elastic cable. Detailed Implementation

[0033] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0034] First implementation method:

[0035] Please see Figures 1-5 A high-efficiency and energy-saving ceramic tile firing tunnel kiln includes a kiln body 1. The kiln body 1 is divided into five sections from the material entry point to the exit point: inlet, preheating zone, firing zone, cooling zone, and outlet. (An atmosphere curtain is installed between adjacent sections. A controllable airflow is injected into the kiln through a specific device, forming a barrier like a "curtain" to separate and stabilize the atmosphere in different sections of the kiln, preventing crosstalk and stabilizing the temperature in different areas of the kiln. The atmosphere curtain is indicated by the dotted line in the figure.) The kiln body 1 is equipped with... There is a flue gas recovery pipe 2. One end of the flue gas recovery pipe 2 is located on the side of the firing zone near the cooling zone. The other end of the flue gas recovery pipe 2 is fixedly connected to a high-quality pipe 3. The end of the high-quality pipe 3 away from the flue gas recovery pipe 2 passes through the upper top plate of the kiln body 1 twice and extends to the preheating zone near the inlet side. A low-quality pipe 5 is fixed on the side wall of the flue gas recovery pipe 2 near the high-quality pipe 3, and the low-quality pipe 5 is connected to the flue gas recovery pipe 2. Solenoid valve A6 and solenoid valve B7 are fixedly connected to the openings of the high-quality pipe 3 and the low-quality pipe 5 near the end of the flue gas recovery pipe 2, respectively.

[0036] A capture module A8 and a main temperature measuring module 9 are fixedly connected to the opening of the flue gas recovery pipe 2 on one side of the firing zone. The main temperature measuring module 9 is located on the side of the capture module A8 away from the firing zone. The main temperature measuring module 9 includes a cross-shaped bracket 901. Multiple main sensor groups 902 are fixedly connected to the end of the cross-shaped bracket 901 near the capture module A8. A backup temperature measuring module 10 is fixedly connected to the end of the cross-shaped bracket 901 away from the capture module A8. The backup temperature measuring module 10 includes a limiting post 100 fixedly connected to the cross-shaped bracket 901. 3. A mounting block 1001 is fitted on the limiting post 1003, and the diameter of the mounting block 1001 is smaller than the side length of the central square part of the cross-shaped bracket 901. A spare sensor group 1002 is fixedly connected to the end of the mounting block 1001 near the main temperature measuring module 9. A limiting plate 1004 is fixedly connected to the end of the limiting post 1003 away from the cross-shaped bracket 901. A compression spring 1006 is fixedly connected between the limiting plate 1004 and the mounting block 1001. An attachment net 1007 is fixedly connected to the outer wall of the mounting block 1001.

[0037] In this embodiment, the high-temperature flue gas from the firing zone is drawn into the flue gas recovery pipe 2, powered by a negative pressure fan installed inside the flue gas recovery pipe 2 (not shown in the accompanying drawings). After being filtered by the capture module A8, the flue gas flows to the main temperature measurement module 9, where the main sensor group 902 detects the flue gas temperature. When the flue gas temperature reaches the preheating zone's operating requirements, solenoid valve A6 opens and solenoid valve B7 closes, allowing the high-temperature flue gas to flow back to the preheating zone of the kiln body 1 through the high-quality pipe 3, reducing energy consumption for maintaining the preheating zone's operating temperature. Conversely, when the flue gas temperature does not reach the preheating zone's operating requirements, solenoid valve A6 closes and solenoid valve B7 opens, allowing the high-temperature flue gas to flow out of the kiln body 1 through the low-quality pipe 5, recovering and utilizing the heat carried by the high-temperature flue gas for other purposes, such as introducing the deeply purified flue gas into the factory's living area for heating or power generation.

[0038] Please see Figure 6 When the capture module A8 fails, its filtering effect on the flue gas weakens. Some impurities in the high-temperature flue gas will pass through the capture module A8 and flow to the main temperature measuring module 9, adhering to the surface of the main sensor group 902, affecting the detection accuracy of the main sensor group 902. At the same time, some impurities in the high-temperature flue gas will also adhere to the attachment mesh 1007, gradually clogging the attachment mesh 1007, making it difficult for the high-temperature flue gas to continue to flow through the high-quality pipe 3. Since the side length of the central square part of the cross-shaped bracket 901 is larger than the diameter of the mounting block 1001, the attachment mesh 1007 is close to the mounting block 1001. The portion of the attachment net 1007 covered by the cross-shaped bracket 901 will not be blocked by smoke and dust. The negative pressure generated by the negative pressure fan will draw the entire mounting block 1001 away from the capture module A8. At this time, the flue gas can circulate through the portion of the attachment net 1007 covered by the cross-shaped bracket 901. Meanwhile, the backup sensor group 1002 is exposed and begins to detect the temperature of the high-temperature flue gas. The switching of solenoid valves A6 and B7 is controlled by the detection results of the backup sensor group 1002, and the detection data of the main sensor group 902 is discarded.

[0039] The switching commands of solenoid valves A6 and B7 are subject to the average value of the temperature values ​​detected by multiple temperature sensors in the main sensor group 902 and the backup sensor group 1002. When the detected value of a certain temperature sensor differs from the values ​​of other sensors in the sensor group by more than 10%, the data detection is determined to be abnormal, the abnormal data is removed, and the average value is recalculated.

[0040] The power supply and control methods of the electrical structures (including but not limited to solenoid valve A6, solenoid valve B7, negative pressure fan, main sensor group 902 and backup sensor group 1002, etc.) in this embodiment are all well-known technologies to those skilled in the art. Those skilled in the art can make reasonable designs according to the usage requirements to achieve the usage requirements of this invention. At the same time, the materials of each structure of this invention need to be reasonably selected according to the usage requirements, such as heat insulation materials and high temperature resistant materials.

[0041] The filter material for the capture module A8 is an adsorption material, such as activated carbon particles.

[0042] Furthermore, for ease of illustration, the accompanying drawings of this invention do not depict each structure strictly according to scale. Those skilled in the art can reasonably design the size and proportion of each structure according to actual usage requirements to meet the usage requirements of this invention. This is common knowledge among those skilled in the art and therefore is not disclosed in detail in this invention.

[0043] The portion of the high-quality tube 3 located on the outside of the kiln body 1 is covered with a matching insulating jacket 4, which reduces the loss of flue gas heat during the transmission process of the high-quality tube 3 and improves energy utilization efficiency.

[0044] A heat-insulating corrugated pipe 1005 is fixedly connected between the mounting block 1001 and the limiting plate 1004. The heat-insulating corrugated pipe 1005 is sleeved on the outside of the compression spring 1006 to protect the compression spring 1006 and prevent the compression spring 1006 from failing prematurely due to high temperature.

[0045] In this embodiment, the high-temperature flue gas is filtered by the capture module A8 to remove dust from it. Then, it is transported to a designated area for energy recovery through the high-quality pipe 3 or the low-quality pipe 5. However, when the capture module A8 over-adsorbs, its adsorption capacity fails, and the high-temperature flue gas, carrying a large amount of dust, passes through the capture module A8 and moves to the position of the main temperature measuring module 9. This will block the main sensor group 902, causing the error of the main sensor group 902 to gradually increase until it is completely distorted. This will affect the control of the solenoid valves A6 and B7, and thus affect the heat recovery effect of the high-temperature flue gas.

[0046] As more dust accumulates on the main sensor group 902, dust will also accumulate on the attachment net 1007 until the overlapping part between the attachment net 1007 and the mounting block 1001 is completely blocked. At this time, the mounting block 1001 and the attachment net 1007 will move towards the limit plate 1004 under negative pressure until the cross-shaped bracket 901 separates from the mounting block 1001, forming an air passage between them. The backup sensor group 1002 is then activated for temperature monitoring. At the same time, the switching of solenoid valves A6 and B7 is controlled by the detection results of the backup sensor group 1002. This allows the main sensor group 902 to be switched to the backup sensor group 1002 after a period of time when the capture module A8 is saturated, extending the effective service life of the high-temperature flue gas recovery equipment and providing sufficient time for staff to arrange maintenance work.

[0047] Second implementation method:

[0048] Please see Figures 7-10 A transition pipe 11 is fixedly connected to the end of the flue gas recovery pipe 2 away from the high-quality pipe 3. An extension pipe 12, whose position matches that of the flue gas recovery pipe 2, is fixedly connected to the side wall of the end of the transition pipe 11 away from the flue gas recovery pipe 2. The flue gas recovery pipe 2, the transition pipe 11, and the extension pipe 12 are interconnected. The transition pipe 11 is L-shaped and includes a vertical storage section and a horizontal collection section. A sealing cap 2 17 and a sealing cap 16 are fixedly connected to the openings of the storage section and the collection section, respectively. Multiple capture modules B13, whose shape matches that of the transition pipe 11, are placed inside the collection section. The capture modules B13 replace the extension pipe 12. The capture module B13 includes a matching upper cover 1301 and a lower cover 1302. The upper cover 1301 and the lower cover 1302 are... A porous corrugated pipe 1303 is fixedly connected between the two. The outer wall of the porous corrugated pipe 1303 is tightly attached to the inner wall of the transition pipe 11. A capture unit 14 is fixedly connected to the inner wall of the porous corrugated pipe 1303. The capture unit 14 includes multiple high-temperature resistant elastic fibers, and adjacent elastic fibers overlap to form a three-dimensional spatial structure. The elastic fibers are preferably high-temperature resistant high-silica fibers. The three-dimensional space formed by the overlapping of elastic fibers is used to capture smoke and dust. A connecting lock 15 is fixedly connected between two adjacent capture modules B13. The part of the connecting lock 15 located inside the capture module B13 is tied and fixed with an elastic rope. A connecting post 18 and an elastic rope 19 are fixedly connected between the uppermost capture module B13 and the sealing cover 17. The elastic rope 19 is wrapped around the outside of the connecting post 18.

[0049] Please see Figure 11In this embodiment, the capture module B13, whose position matches that of the extension tube 12, is named the working unit, and the upper capture module B13 adjacent to the working unit is named the standby unit. The capture module B13 replaces the function of the capture module A8. High-temperature flue gas enters the capture module B13 through the pores on the porous corrugated pipe 1303. The three-dimensional spatial structure formed by multiple elastic fibers captures the dust in the high-temperature flue gas. As the amount of dust captured increases, the weight at the lower end of the working unit gradually increases, pulling the lower cover 1302 downward as a whole. This pulls the saturated elastic fibers down to the lower side of the extension tube 12, allowing the unsaturated elastic fibers to move to the position of the extension tube 12 and play their role. When the capture module B13 is saturated, the elastic rope of the connecting lock 15 adjacent to the upper side of the standby unit also reaches its limit. The elastic rope breaks, and the capture module B13 in the working position slides down to the collection part of the transition tube 11, pulling the standby unit down to the position matching that of the extension tube 12, thus switching the standby unit into the working unit.

[0050] During the above process, since the transition tube 11 is L-shaped, the speed of the working unit will drop significantly when it encounters a corner while sliding down, which reduces the impact generated when the capture module B13 switches positions, making the elastic rope on the upper connecting lock 15 of the standby unit less likely to break prematurely due to the impact generated by the falling working unit.

[0051] When the uppermost capture module B13 becomes a standby unit, the elastic cable 19 replaces the original function of the connecting lock 15, and the connecting post 18 replaces the original function of the elastic cord. When the working unit is saturated and overloaded, its weight will break the connecting post 18, causing the uppermost capture module B13 to fall and continue working.

[0052] A prefabricated groove is carved on the outer wall of the connecting column 18. By controlling the depth of the prefabricated groove, the maximum bearing capacity of the connecting column 18 can be controlled, thereby adjusting the number of capture modules B13 installed at one time.

[0053] The capture module B13 and capture unit 14 are made of lightweight materials. The fixing strength of the multiple elastic ropes decreases from top to bottom, making the weight of the capture module B13 and capture unit 14 negligible compared to the weight of the smoke and dust they adsorb. This facilitates the selection of the strength of the elastic ropes for fixing the connection lock 15, and also reduces the impact of the weight of the capture module B13 and capture unit 14 on the strength of the elastic ropes. The reason for selecting the strength of the elastic ropes is that as the height of the standby unit increases, its falling length also increases, and the impact formed when it moves to the working unit position also increases. Therefore, it is necessary to increase the strength of the elastic ropes to cope with the changes in impact.

[0054] The lengths of the multiple connecting locks 15 decrease sequentially from top to bottom, and the length difference between two adjacent connecting locks 15 is equal to the initial height of the capture module B13, so that when the capture module B13 is replaced, the standby unit can be accurately moved to the working unit position.

[0055] A pair of guide pipes 1304 are provided between the upper cover 1301 and the lower cover 1302. Multiple guide holes are drilled on the two guide pipes 1304. The multiple guide holes are staggered at both ends of the guide pipes 1304. The guide pipe 1304 located on the outer side is fixedly connected to the lower cover 1302, and the guide pipe 1304 located on the inner side is fixedly connected to the upper cover 1301. Without affecting the overall stretching of the capture module B13, the distance that the flue gas flows in the upper cover 1301 is extended, thereby increasing the filtration effect of the flue gas. At the same time, after the capture module B13 is stretched as a whole, the size of the guide holes can be increased, making the guide holes less likely to be completely blocked.

[0056] A pair of partition plates 1305 are fixedly connected to the outer wall of the outer guide pipe 1304. The ends of the two partition plates 1305 away from the guide pipe 1304 are in contact with the porous corrugated pipe 1303, which reduces the flow of flue gas from the periphery of the outer guide pipe 1304 and increases the filtration effect of the flue gas.

[0057] Similarly, for ease of demonstration, the dimensions of the various structures in this embodiment are not drawn strictly to scale: for example, the horizontal portion of the extension tube 12 and the transition tube 11 needs to be left with sufficient distance so that when the capture module B13 falls, it has enough speed to pass through the bend of the transition tube 11 and enter the horizontal portion of the transition tube 11. This is a well-known technique to those skilled in the art, so it is not disclosed in detail in this embodiment. Those skilled in the art can reasonably design the structure of this embodiment based on the existing technology to meet the usage requirements of this application.

[0058] Compared to the first implementation method, in this implementation method, multiple automatically replaceable capture modules B13 are used to replace the original capture module A8. Although this increases the cost of use, it increases the effective filtration time of flue gas and dust, which can significantly reduce the frequency of downtime maintenance of the tunnel kiln and increase the economic benefits of the tunnel kiln.

[0059] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A high-efficiency and energy-saving ceramic tile firing tunnel kiln, comprising a kiln body (1), characterized in that: The kiln body (1) is divided into five parts in sequence from the material entry position to the exit position: inlet, preheating zone, firing zone, cooling zone and outlet. A flue gas recovery pipe (2) is provided in the kiln body (1). One end of the flue gas recovery pipe (2) is located on the side of the firing zone near the cooling zone. The other end of the flue gas recovery pipe (2) is fixedly connected to a high-quality pipe (3). The end of the high-quality pipe (3) away from the flue gas recovery pipe (2) passes through the top plate of the kiln body (1) twice and extends to the side of the preheating zone near the inlet. A low-quality pipe (5) is fixed on the side wall of the flue gas recovery pipe (2) near the high-quality pipe (3), and the low-quality pipe (5) is connected to the flue gas recovery pipe (2). Solenoid valve A (6) and solenoid valve B (7) are fixedly connected to the openings of the high-quality pipe (3) and the low-quality pipe (5) near the end of the flue gas recovery pipe (2), respectively. The flue gas recovery pipe (2) is fixedly connected to a capture module A (8) and a main temperature measuring module (9) at the opening on one side of the firing zone. The main temperature measuring module (9) is located on the side of the capture module A (8) away from the firing zone. The main temperature measuring module (9) includes a cross-shaped bracket (901). Multiple main sensor groups (902) are fixedly connected to one end of the cross-shaped bracket (901) near the capture module A (8). A backup temperature measuring module (10) is fixedly connected to one end of the cross-shaped bracket (901) away from the capture module A (8). The backup temperature measuring module (10) includes a limiting post (10) fixedly connected to the cross-shaped bracket (901). 03), the limiting post (1003) is fitted with an installation block (1001), and the diameter of the installation block (1001) is smaller than the side length of the central square part of the cross-shaped bracket (901). The end of the installation block (1001) near the main temperature measuring module (9) is fixedly connected to a spare sensor group (1002). The end of the limiting post (1003) away from the cross-shaped bracket (901) is fixedly connected to a limiting plate (1004). A compression spring (1006) is fixedly connected between the limiting plate (1004) and the installation block (1001). An attachment net (1007) is fixedly connected to the outer wall of the installation block (1001).

2. The high-efficiency energy-saving ceramic tile firing tunnel kiln according to claim 1, characterized in that: The high-quality pipe (3) located on the outside of the kiln body (1) is covered with a matching thermal outer jacket (4).

3. The high-efficiency and energy-saving ceramic tile firing tunnel kiln according to claim 1, characterized in that: A heat-insulating corrugated pipe (1005) is fixedly connected between the mounting block (1001) and the limiting plate (1004), and the heat-insulating corrugated pipe (1005) is sleeved on the outside of the compression spring (1006).

4. The high-efficiency and energy-saving ceramic tile firing tunnel kiln according to claim 1, characterized in that: The end of the flue gas recovery pipe (2) away from the high-quality pipe (3) is fixedly connected to a transition pipe (11). An extension pipe (12) matching the position of the flue gas recovery pipe (2) is fixedly connected to the side wall of the end of the transition pipe (11) away from the flue gas recovery pipe (2). The flue gas recovery pipe (2), the transition pipe (11) and the extension pipe (12) are interconnected. The transition pipe (11) is L-shaped. The transition pipe (11) includes a vertical storage section and a horizontal collection section. The openings of the storage section and the collection section are respectively fixedly connected to a second sealing cover (17) and a first sealing cover (16). Multiple capture modules B (13) with shapes matching the transition pipe (11) are placed in the collection section. The capture modules B (13) replace the extension pipe (12). The capture modules B (13) include matching top covers (130). 1) and the lower cover (1302), the upper cover (1301) and the lower cover (1302) are fixedly connected to a porous corrugated pipe (1303), the outer wall of the porous corrugated pipe (1303) is closely attached to the inner wall of the transition pipe (11), the inner wall of the porous corrugated pipe (1303) is fixedly connected to a capture unit (14), the capture unit (14) includes multiple high temperature resistant elastic fibers, and adjacent elastic fibers overlap to form a three-dimensional spatial structure, and a connecting lock (15) is fixedly connected between two adjacent capture modules B (13), the part of the connecting lock (15) located inside the capture module B (13) is fixedly tied with an elastic thin rope, and a connecting post (18) and an elastic rope (19) are fixedly connected between the uppermost capture module B (13) and the sealing cover II (17), and the elastic rope (19) is wrapped around the outside of the connecting post (18).

5. The high-efficiency energy-saving ceramic tile firing tunnel kiln according to claim 4, characterized in that: A prefabricated groove is cut into the outer wall of the connecting column (18).

6. The high-efficiency and energy-saving ceramic tile firing tunnel kiln according to claim 4, characterized in that: The capture module B (13) and the capture unit (14) are made of lightweight materials, and the fixing strength of the multiple elastic ropes decreases from top to bottom.

7. The high-efficiency energy-saving ceramic tile firing tunnel kiln according to claim 4, characterized in that: The lengths of the multiple connection locks (15) decrease sequentially from top to bottom, and the length difference between two adjacent connection locks (15) is equal to the length of the initial height of the capture module B (13).

8. The high-efficiency and energy-saving ceramic tile firing tunnel kiln according to claim 4, characterized in that: A pair of guide tubes (1304) are provided between the upper cover (1301) and the lower cover (1302). Multiple guide holes are drilled on the two guide tubes (1304). The multiple guide holes are staggered at both ends of the guide tubes (1304). The guide tube (1304) located on the outer side is fixedly connected to the lower cover (1302), and the guide tube (1304) located on the inner side is fixedly connected to the upper cover (1301).

9. A high-efficiency energy-saving ceramic tile firing tunnel kiln according to claim 8, characterized in that: A pair of partition plates (1305) are fixedly connected to the outer wall of the outer guide pipe (1304), and the ends of the two partition plates (1305) away from the guide pipe (1304) are in contact with the porous corrugated pipe (1303).

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