Energy-saving device for cement clinker calcination

Abstract

The application discloses an energy-saving device for cement clinker calcination, and relates to the technical field of rotary kiln, which comprises a cylinder, driving motors and supporting wheels, two driving motors are a group, the driving motors and the supporting wheels are respectively fixedly installed on corresponding concrete bases, the driving motors are electrically connected with an external controller through cables, a kiln tail is movably installed at one end of the cylinder, a kiln head is movably installed at the other end of the cylinder, a plurality of wheel rings are fixedly installed on the outer side of the cylinder, a large gear is also fixedly installed on the outer side of the cylinder, the wheel rings are rotatably installed between the two supporting wheels, the large gear is meshed and connected with pinions at the output ends of the driving motors, a plurality of paving frames are fixedly installed in the cylinder, and one of the paving frames is fixedly installed with a fixed ring at one end. The paving frames are paved in the cylinder in priority, the installation of the first conveying pipe, the second conveying pipe and the nozzle is adjusted, and the laying of the heat preservation layer is increased between the paving frames and the cylinder.

Description

Technical Field

[0001] This invention relates to the field of rotary kiln technology, and in particular to an energy-saving device for calcining cement clinker. Background Technology

[0002] A rotary kiln is a large-scale calcination equipment mainly used for raw material processing in industries such as cement, lime, and metallurgy. It mainly consists of a kiln body, support device, transmission device, combustion device, and flue gas treatment device. The kiln body is a large rotating cylinder containing a high-temperature furnace inside, and is equipped with an insulation layer and sealing device on the outside. The support device is used to support the kiln body and maintain its horizontal position. The transmission device is used to drive the kiln body to rotate, and generally uses a large electric motor or diesel engine as the power source. The combustion device is used to provide heat to the furnace, and generally uses a gas or oil burner. The flue gas treatment device is used to treat the waste gas generated during the calcination process. Cement calcination is an indispensable step in cement production, and the rotary kiln is one of the main pieces of equipment for this process. The purpose of cement calcination is to calcine raw materials at high temperatures, causing a series of physical, chemical, and physicochemical changes to produce clinker. The clinker is then cooled into granular materials suitable for cement production. The rotary kiln provides this high-temperature, sealed calcination environment, ensuring the raw materials are fully heated and calcined during continuous rotation. During operation, adding pulverized coal primarily provides fuel, allowing it to burn at high temperatures within the kiln, thus calcining the raw materials. Simultaneously, the heat generated by the combustion of pulverized coal also provides energy for the heat transfer process, enabling the raw materials to absorb heat and react. Adding pulverized coal also helps regulate... The atmosphere inside the rotary kiln, such as oxygen and carbon monoxide content, is controlled to regulate the calcination process. Pulverized coal is added to the kiln through a pulverized coal spray gun, typically located on the side of the kiln head at a certain distance. Compressed air is usually used to spray the pulverized coal into the kiln. Therefore, after adding the pulverized coal to the rotary kiln, the spray distance is generally controlled by adjusting the compressed air pressure of the spray gun. However, due to the long length of the rotary kiln and the high temperature of the internal air, the spray distance of the pulverized coal is affected. In actual combustion, this can cause the temperature in some areas of the kiln to fail to reach the standard, thus affecting the calcination effect of the cement and reducing the yield of finished cement. In other words, with the same energy consumption, the production efficiency is lower. Summary of the Invention

[0003] The purpose of this invention is to provide an energy-saving device for cement clinker calcination, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An energy-saving device for cement clinker calcination includes a cylinder, a drive motor, and support rollers. Two drive motors form a group, and each drive motor and support roller is fixedly mounted on a corresponding concrete base. The drive motors are electrically connected to an external controller via cables. A kiln tail is movably mounted at one end of the cylinder, and a kiln head is movably mounted at the other end. Multiple wheel rings are fixedly mounted on the outer side of the cylinder, and a large gear is also fixedly mounted on the outer side of the cylinder. The wheel rings are rotatably mounted between two support rollers, and the large gear meshes with a small gear at the output end of the drive motor. Multiple paving frames are fixedly mounted inside the cylinder, one of which... A fixing ring is fixedly installed at one end, and a first diversion hood is fixedly installed inside the kiln head. The first diversion hood and the fixing ring are movably connected. The paving frame includes multiple first mounting plates and second mounting plates, which are arranged at intervals. A connecting frame is fixedly connected between the first mounting plates and the second mounting plates. Multiple first conveying pipes are movably installed at the end of the fixing ring opposite to the first diversion hood. A second conveying pipe is movably installed at one end of the first conveying pipe. Multiple installation grooves are opened on the outside of the second conveying pipe. A limit tube is movably installed on one side of the installation groove, and a sleeve is movably installed in the installation groove on the side of the limit tube.

[0005] As a further preferred embodiment of the present invention, the outer surface of the second mounting plate has an inner groove structure, the second mounting plate has a plurality of insertion holes, the first mounting plate has a plurality of mounting holes, and the first mounting plate is fixedly mounted on the inner side of the cylinder by bolts.

[0006] As a further preferred embodiment of the present invention, the inner side of the paving frame is paved with refractory bricks.

[0007] As a further preferred embodiment of the present invention, a plurality of first fixing seats are fixedly installed at one end of the fixing ring. The outer side of the first fixing seat has a spiral pattern. A first diversion groove is opened in the fixing ring. The inner side of the first diversion groove has an inclined surface towards the first fixing seat. Rotating grooves are opened at the bottom and top of the first diversion groove.

[0008] As a further preferred embodiment of the present invention, a second diversion hood is provided on the outside of the first diversion hood, and the first diversion hood and the second diversion hood are fixedly connected by a grid. There is a gap between the first diversion hood and the second diversion hood. A rotating ring is fixedly installed on one end of the inner side of the first diversion hood, and a rotating ring is also fixedly installed on one end of the outer side of the second diversion hood. The outer side of the second diversion hood is fixedly installed inside the kiln head, and one end of the first diversion hood and the second diversion hood are respectively rotatably installed in the first diversion groove by the rotating ring. The rotating ring is rotatably installed in the corresponding rotating groove. That is, the cavity between the first diversion hood and the second diversion hood is connected to the first diversion groove and the first fixed seat channel.

[0009] As a further preferred embodiment of the present invention, a threaded groove is provided at one end of the first conveying pipe, and a second fixing seat is fixedly installed at the other end of the first conveying pipe. A threaded groove is also provided at one end of the second conveying pipe, and a second fixing seat is also fixedly installed at the other end of the second conveying pipe. The first conveying pipe is threadedly connected to the corresponding first fixing seat through the threaded groove at one end, and the second conveying pipe is threadedly connected to the corresponding second fixing seat through the threaded groove at one end.

[0010] As a further preferred embodiment of the present invention, a plurality of second diversion grooves are provided on the inner side of the mounting groove, the limiting tube is inserted and installed on the outer side of the second conveying pipe located in the mounting groove, the second conveying pipe located on one side of the limiting tube is also provided with a top ring, the top ring is inserted and installed on the other side of the second conveying pipe located in the mounting groove, and the second conveying pipe located between the top ring and the limiting tube is fitted with a compression spring, and a sealing groove is provided on one side of the top ring.

[0011] As a further preferred embodiment of the present invention, spacer rings are fixedly installed on both sides of the sleeve, a sealing ring is fixedly installed on one side of the spacer ring, a fixing pipe is fixedly installed at the lower end of the sleeve, a nozzle is fixedly installed at the lower end of the fixing pipe, and multiple anti-backflow plates are fixedly installed on both sides of the nozzle. The anti-backflow plates are installed at a 30-degree angle on one side of the nozzle. The sleeve, spacer rings, sealing rings, fixing pipe, nozzle, and anti-backflow plates are made of ceramic. The sleeve is inserted and installed on the outside of the second delivery pipe located in the mounting groove, while one end of the nozzle extends into the cylinder through the corresponding insertion hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an energy-saving device for cement clinker calcination, which utilizes the setting of a paving frame to preferentially lay the paving frame inside the cylinder, and provides adjustment for the installation of the first conveying pipe, the second conveying pipe and the spray pipe, and adds a heat insulation layer between the paving frame and the cylinder. The fixed ring and the first and second diversion hoods can divert the coal powder that originally entered the cylinder to the first and second conveying pipes with the help of compressed air, and then transport it to a position in the cylinder away from the spray gun through the sleeve and nozzle, thereby increasing the conveying distance of the coal powder, improving the calcination quality and efficiency of the cylinder for cement, and thus reducing production energy consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the cylindrical body of the present invention; Figure 3 This is a schematic diagram of the paving frame structure of the present invention; Figure 4This is an exploded view of the fixed ring structure of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 These are cross-sectional views of the first and second flow dividers of the present invention. Figure 7 This is an exploded view of the first and second conveying pipes of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Figure 9 This is an exploded view of the sleeve and nozzle structure of the present invention.

[0014] In the diagram: 1. Cylinder; 2. Drive motor; 3. Support roller; 4. Kiln tail; 5. Kiln head; 6. Wheel ring; 7. Large gear; 8. Paving frame; 9. Fixing ring; 10. First diversion hood; 11. First mounting plate; 12. Second mounting plate; 13. Connecting frame; 14. First conveying pipe; 15. Second conveying pipe; 16. Mounting groove; 17. Limiting pipe; 18. Sleeve; 19. Insertion hole; 20. Mounting hole; 21. First fixing seat; 22. First diversion groove; 23. Rotating groove; 24. Second diversion hood; 25. Grille; 26. Rotating ring; 27. Screw groove; 28. Second fixing seat; 29. ​​Second diversion groove; 30. Top ring; 31. Compression spring; 32. Sealing groove; 33. Spacer ring; 34. Sealing ring; 35. Fixing pipe; 36. Nozzle; 37. Anti-backflow plate. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] like Figures 1-9As shown, the present invention provides an energy-saving device for cement clinker calcination, comprising a cylinder 1, a drive motor 2, and support rollers 3. Two drive motors 2 form a group, and the drive motors 2 and support rollers 3 are respectively fixedly installed on corresponding concrete bases. The drive motors 2 are electrically connected to an external controller via cables. A kiln tail 4 is movably installed at one end of the cylinder 1, and a kiln head 5 is movably installed at the other end. Multiple wheel rings 6 are fixedly installed on the outer side of the cylinder 1, and a large gear 7 is also fixedly installed on the outer side of the cylinder 1. The wheel rings 6 are rotatably installed between the two support rollers 3, and the large gear 7 meshes with a small gear at the output end of the drive motor 2. Multiple paving frames 8 are fixedly installed inside the cylinder 1, and one of the paving frames 8 has a fixed end... The fixed ring 9 and the kiln head 5 are fixedly installed with a first diversion hood 10. The first diversion hood 10 and the fixed ring 9 are movably connected. The paving frame 8 includes multiple first mounting plates 11 and second mounting plates 12. The first mounting plates 11 and second mounting plates 12 are arranged at intervals. A connecting frame 13 is fixedly connected between the first mounting plates 11 and the second mounting plates 12. Multiple first conveying pipes 14 are movably installed at one end of the fixed ring 9 away from the first diversion hood 10. A second conveying pipe 15 is movably installed at one end of the first conveying pipe 14. Multiple installation grooves 16 are opened on the outside of the second conveying pipe 15. A limiting pipe 17 is movably installed on one side of the installation groove 16. A sleeve 18 is also movably installed in the installation groove 16 on the side of the limiting pipe 17.

[0017] like Figures 3-5 As shown, the outer surface of the second mounting plate 12 has an inner groove structure, and multiple insertion holes 19 are opened in the second mounting plate 12. Multiple mounting holes 20 are opened in the first mounting plate 11. The first mounting plate 11 is fixedly installed on the inner side of the cylinder 1 by bolts. Refractory bricks are laid on the inner side of the paving frame 8. Multiple first fixing seats 21 are fixedly installed at one end of the fixing ring 9. The outer side of the first fixing seat 21 has a spiral pattern. A first diversion groove 22 is opened in the fixing ring 9. The inner side of the first diversion groove 22 has an inclined surface towards the first fixing seat 21. The bottom and top of the first diversion groove 22 are both provided with rotating grooves 23. The paving frame 8 can provide conditions for the installation of the first conveying pipe 14 and the second conveying pipe 15 in the cylinder 1 and protect the first conveying pipe 14 and the second conveying pipe 15. like Figures 5-6As shown, a second diversion hood 24 is provided on the outside of the first diversion hood 10. The first diversion hood 10 and the second diversion hood 24 are fixedly connected by a grid 25, and there is a gap between the first diversion hood 10 and the second diversion hood 24. A rotating ring 26 is fixedly installed on one end of the inner side of the first diversion hood 10, and a rotating ring 26 is also fixedly installed on one end of the outer side of the second diversion hood 24. The outer side of the second diversion hood 24 is fixedly installed inside the kiln head 5, and one end of the first diversion hood 10 and the second diversion hood 24 are respectively rotatably installed in the first diversion groove 22 through the rotating ring 26. The rotating ring 26 is rotatably installed in the corresponding rotating groove 23. That is, the cavity between the first diversion hood 10 and the second diversion hood 24 is connected to the first diversion groove 22 and the first fixed seat 21. With the help of the first diversion hood 10 and the second diversion hood 24 fixed in the kiln head 5 and the fixed ring 9 fixed at one end of the paving frame 8, the cylinder 1 can be driven by the paving frame 8 to rotate relative to the fixed ring 9 and the first diversion hood 10, thereby ensuring that the coal powder is diverted to the cylinder 1 and the first conveying pipe 14 and the second conveying pipe 15 by compressed air. like Figures 7-8 As shown, a threaded groove 27 is provided at one end of the first conveying pipe 14, and a second fixing seat 28 is fixedly installed at the other end of the first conveying pipe 14. A threaded groove 27 is also provided at one end of the second conveying pipe 15, and a second fixing seat 28 is fixedly installed at the other end of the second conveying pipe 15. The first conveying pipe 14 is threadedly connected to the corresponding first fixing seat 21 through the threaded groove 27 at one end, while the second conveying pipe 15 is threadedly connected to the corresponding second fixing seat 28 through the threaded groove 27 at one end. Multiple second diversion grooves 29 are provided inside the mounting groove 16. A limiting tube 17 is inserted and installed on the outside of the second conveying pipe 15 located inside the mounting groove 16. The second conveying pipe 15 located on one side of the limiting tube 17 is also provided with a top ring 30. The top ring 30 is inserted and installed on the other side of the second conveying pipe 15 located inside the mounting groove 16. A compression spring 31 is fitted on the second conveying pipe 15 located between the top ring 30 and the limiting tube 17. A sealing groove 32 is provided on one side of the top ring 30. like Figure 9As shown, spacer rings 33 are fixedly installed on both sides of the inner sleeve 18, and a sealing ring 34 is fixedly installed on one side of the spacer ring 33. A fixing pipe 35 is fixedly installed at the lower end of the sleeve 18, and a nozzle 36 is fixedly installed at the lower end of the fixing pipe 35. Multiple anti-backflow vanes 37 are fixedly installed on both sides of the inner sleeve 36. The anti-backflow vanes 37 are installed at a 30-degree angle on one side of the inner sleeve 36. The sleeve 18, spacer rings 33, sealing rings 34, fixing pipes 35, nozzles 36, and anti-backflow vanes 37 are all made of ceramic. The sleeve 18 is inserted and installed in a perforated manner. The second conveying pipe 15 is located outside the mounting groove 16, and one end of the nozzle 36 extends into the cylinder 1 through the corresponding insertion hole 19. The paving frame 8 is rotatably installed in the mounting groove 16 outside the second conveying pipe 15, which can ensure convenient connection between the second conveying pipe 15 and the first conveying pipe 14. At the same time, the sleeve 18 and the nozzle 36 can spray coal powder into the cylinder 1, and multiple anti-backflow plates 37 are installed in the nozzle 36 to prevent cement in the cylinder 1 from flowing back into the nozzle 36 along with the cylinder 1.

[0018] It should be noted that this invention is an energy-saving device for cement clinker calcination. During installation, multiple paving frames 8 can be sequentially and fixedly connected together. Then, multiple first conveying pipes 14 are sequentially threaded onto the first fixing seat 21 corresponding to one end of the fixing ring 9 through the screw groove 27 on one side. After the first conveying pipes 14 are installed, the nozzles 36 at the lower ends of the two sleeves 18 on the outer side of the second conveying pipe 15 are respectively inserted into the corresponding insertion holes 19. Then, by holding the second conveying pipe 15 and applying a certain pressure to the square away from the first conveying pipe 14, the second conveying pipe 15 can pass through the two outer sleeves 18. The mounting groove 16 moves to one side within the corresponding sleeve 18. Simultaneously, the lower end of the nozzle 36 is inserted into the corresponding insertion hole 19, restricting the movement of the sleeve 18. This allows the second delivery pipe 15 to move towards the sleeve 18 via the mounting groove 16, driving the limiting tube 17 and the top ring 30. This also causes the compression spring 31 to compress towards the top ring 30. Thus, after one end of the nozzle 36 is inserted into the corresponding insertion hole 19, the mobility of the second delivery pipe 15 is ensured. This allows the end of the second delivery pipe 15 with the threaded groove 27 to move to one end of the first delivery pipe 14, and allows the second delivery pipe 15... 5. Keep the second conveying pipe 15 concentric with the corresponding first conveying pipe 14, and then slowly release the second conveying pipe 15. With the help of the extension and rebound force of the compression spring 31, the compression spring 31 pushes the second conveying pipe 15 towards the first conveying pipe 14, and makes the threaded groove 27 at one end of the second conveying pipe 15 abut against the second fixing seat 28 at one end of the first conveying pipe 14. At this time, one end of the second conveying pipe 15 can be rotated with the help of a wrench or other tools, so that the second conveying pipe 15 can rotate within the corresponding limiting pipe 17 and sleeve 18 through the two outer second conveying pipes 15. At the same time, the second conveying pipe 15 also rotates through the threaded groove 27 at one end. The groove 27 is threaded onto the corresponding screw groove 27 to complete the installation of the current second conveying pipe 15. Then, the remaining second conveying pipes 15 can be installed in the same way as above. Except for the second conveying pipe 15 at one end of the first conveying pipe 14, which is connected to its first conveying pipe 14, the remaining second conveying pipes 15 are connected to other second conveying pipes 15. Then, the assembled paving frame 8, fixing ring 9, first diverter hood 10, first conveying pipe 14, and second conveying pipe 15 are installed in the cylinder 1, and refractory bricks are laid on the inside of the paving frame 8. At the same time, one end of the spray pipe 36 is placed between two refractory bricks. After the pulverized coal is conveyed into the cylinder 1 through the first diversion hood 10 by the spray gun, some of the pulverized coal enters the first fixed seat 21 through the cavity between the first diversion hood 10 and the second diversion hood 24. Utilizing the pressure of compressed air and the narrowing of the conveying channel, some of the pulverized coal quickly enters the first conveying pipe 14 and the second conveying pipe 15, and then enters the corresponding sleeve 18 through the second diversion groove 29. The pulverized coal then enters the spray pipe 36 through the cavity between the sleeve 18 and the mounting groove 16, and is sprayed at high pressure into other areas of the cylinder 1. This increases the conveying distance of the pulverized coal, improves the combustion efficiency of the pulverized coal in the cylinder 1, ensures the temperature, thereby improving product quality and achieving the goal of energy saving.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving device for cement clinker calcination, comprising a cylinder (1), a drive motor (2), and support rollers (3), wherein two drive motors (2) are grouped together, and the drive motors (2) and support rollers (3) are respectively fixedly installed on corresponding concrete bases. The drive motors (2) are electrically connected to an external controller via cables. A kiln tail (4) is movably installed at one end of the cylinder (1), and a kiln head (5) is movably installed at the other end of the cylinder (1). Multiple wheel rings (6) are fixedly installed on the outside of the cylinder (1), and a large gear (7) is also fixedly installed on the outside of the cylinder (1). The wheel rings (6) are rotatably installed between two support rollers (3), and the large gear (7) meshes with a small gear at the output end of the drive motor (2). The device is characterized in that: Multiple paving frames (8) are fixedly installed inside the cylinder (1). One of the paving frames (8) is fixedly installed with a fixing ring (9) at one end. A first diversion hood (10) is fixedly installed inside the kiln head (5). The first diversion hood (10) and the fixing ring (9) are movably connected. The paving frame (8) includes multiple first mounting plates (11) and second mounting plates (12). The first mounting plates (11) and the second mounting plates (12) are arranged at intervals. A connecting frame (13) is fixedly connected between the first mounting plates (11) and the second mounting plates (12). The fixed ring (9) is movably installed with a plurality of first delivery pipes (14) at one end opposite to the first diverter shroud (10). A second delivery pipe (15) is movably installed at one end of the first delivery pipe (14). A plurality of mounting grooves (16) are provided on the outside of the second delivery pipe (15). A limiting tube (17) is movably installed on one side of the mounting groove (16). A sleeve (18) is also movably installed in the mounting groove (16) on one side of the limiting tube (17). A fixing tube (35) is fixedly installed at the lower end of the sleeve (18). A nozzle (36) is fixedly installed at the lower end of the fixing tube (35). A plurality of insertion holes (19) are provided in the second mounting plate (12). One end of the nozzle (36) extends through the insertion hole (19) into the inside of the cylinder (1).

2. The energy-saving device for cement clinker calcination according to claim 1, characterized in that: The outer surface of the second mounting plate (12) has an inner groove structure. Multiple insertion holes (19) are provided in the second mounting plate (12). Multiple mounting holes (20) are provided in the first mounting plate (11). The first mounting plate (11) is fixedly installed on the inner side of the cylinder (1) by bolts.

3. The energy-saving device for cement clinker calcination according to claim 2, characterized in that: The inner side of the paving frame (8) is paved with refractory bricks.

4. An energy-saving device for cement clinker calcination according to claim 3, characterized in that: Multiple first fixing seats (21) are fixedly installed at one end of the fixing ring (9). The outer side of the first fixing seat (21) has a spiral pattern. A first diversion groove (22) is opened in the fixing ring (9). The inner side of the first diversion groove (22) has an inclined surface in the direction of the first fixing seat (21). A rotating groove (23) is opened at the bottom and top of the first diversion groove (22).

5. An energy-saving device for cement clinker calcination according to claim 4, characterized in that: A second diversion hood (24) is provided on the outside of the first diversion hood (10). The first diversion hood (10) and the second diversion hood (24) are fixedly connected by a grid (25). There is a gap between the first diversion hood (10) and the second diversion hood (24). A rotating ring (26) is fixedly installed on one end of the inner side of the first diversion hood (10). A rotating ring (26) is also fixedly installed on one end of the outer side of the second diversion hood (24). The outer side of the second diversion hood (24) is fixedly installed in the kiln head (5). One end of the first diversion hood (10) and the second diversion hood (24) are respectively rotatably installed in the first diversion groove (22) by the rotating ring (26). The rotating ring (26) is rotatably installed in the corresponding rotating groove (23). That is, the cavity between the first diversion hood (10) and the second diversion hood (24) is connected to the first diversion groove (22) and the first fixed seat (21).

6. An energy-saving device for cement clinker calcination according to claim 5, characterized in that: The first conveying pipe (14) has a threaded groove (27) at one end and a second fixed seat (28) fixedly installed at the other end. The second conveying pipe (15) also has a threaded groove (27) at one end and a second fixed seat (28) fixedly installed at the other end. The first conveying pipe (14) is threadedly connected to the corresponding first fixed seat (21) through the threaded groove (27) at one end, while the second conveying pipe (15) is threadedly connected to the corresponding second fixed seat (28) through the threaded groove (27) at one end.

7. An energy-saving device for cement clinker calcination according to claim 6, characterized in that: Multiple second diversion slots (29) are provided inside the mounting slot (16). The limiting tube (17) is inserted and installed on the outside of the second conveying pipe (15) located in the mounting slot (16). The second conveying pipe (15) located on one side of the limiting tube (17) is also provided with a top ring (30). The top ring (30) is inserted and installed on the other side of the second conveying pipe (15) located in the mounting slot (16). The second conveying pipe (15) located between the top ring (30) and the limiting tube (17) is fitted with a compression spring (31). A sealing groove (32) is provided on one side of the top ring (30).

8. An energy-saving device for cement clinker calcination according to claim 7, characterized in that: Spacer rings (33) are fixedly installed on both sides of the sleeve (18). A sealing ring (34) is fixedly installed on one side of the spacer ring (33). Multiple anti-backflow plates (37) are fixedly installed on both sides of the nozzle (36). The anti-backflow plates (37) are installed at a 30-degree angle on one side of the nozzle (36). The sleeve (18), spacer rings (33), sealing rings (34), fixed pipe (35), nozzle (36), and anti-backflow plates (37) are made of ceramic. The sleeve (18) is inserted and installed on the outside of the second delivery pipe (15) located in the mounting groove (16).

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