Energy-saving and environment-friendly clinker calcination and preheating device

Abstract

The application discloses an energy-saving and environment-friendly clinker calcination preheating device, and relates to the field of clinker production preheating devices.The device comprises a multistage cyclone drum, a gas guide inner drum is arranged in the cyclone drum, and an air inlet pipeline is fixedly arranged on the surface of the cyclone drum, wherein the height of the air inlet end of the air inlet pipeline is lower than that of the air outlet end.The device has the advantages that the gas guide pipeline, the fan blade and the first rotating rod are arranged, the airflow enters the inside of the gas guide pipeline, the airflow passes through the position of the fan blade, the wind power drives the first rotating rod connected with the fan blade to rotate, the rotation of the first rotating rod drives the sealing plug to rotate, a certain amount of material falls on the surface of the sealing plug, the material on the surface of the sealing plug falls into the inside of the material pipeline of the next layer each time, temporary sealing can be realized, the process is controlled by the excess wind power of the hot airflow, the use of energy is reduced, and the use cost is controlled.

Description

Technical Field

[0001] This invention relates to the field of clinker production preheating equipment, and in particular to an energy-saving and environmentally friendly clinker calcination preheating equipment. Background Technology

[0002] The clinker calcination process involves subjecting raw materials to a series of reactions, including preheating, decomposition, sintering, and calcination, under high temperature conditions. The raw materials are then subjected to chemical and physical reactions to form clinker. Preheating of the raw materials is generally carried out inside a preheating tower (or preheater), which fully utilizes the waste heat from the rotary kiln and decomposition furnace to heat the raw materials. This process preheats the raw materials and decomposes some of the carbonates, maximizing the heat exchange efficiency between the gas and solid phases. This achieves high quality, high output, and low consumption for the entire calcination system. Therefore, it is essential to have three functions: uniform gas-solid dispersion, rapid heat exchange, and efficient separation.

[0003] The raw material fed into the preheating tower (or preheater) is impacted by the high-speed upward airflow. The material turns upward and moves with the airflow, while being dispersed. The material then suspends in the preheater and is preheated by the heated airflow. Because the preheater has a high-speed airflow, it is necessary to ensure the uniformity of the feeding and the relative airtightness of the entire preheater to ensure the stability of the material flow direction with the airflow. This is usually controlled by additional electricity or materials, which increases the input cost. Summary of the Invention

[0004] The main objective of this invention is to provide an energy-saving and environmentally friendly clinker calcination preheating device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an energy-saving and environmentally friendly clinker calcination preheating device, comprising a multi-stage cyclone separator, an inner air guide cylinder installed inside the cyclone separator, an air inlet pipe fixedly installed on the surface of the cyclone separator, the air inlet end of the air inlet pipe being lower than the air outlet end, an inclined material pipe fixedly installed on the surface of the air inlet pipe, the air inlet pipe being connected to the interior of the adjacent inner air guide cylinder below through a ventilation pipe, and the material outlet of the cyclone separator being connected to the interior of the material pipe through a material passage pipe;

[0006] Material shut-off valves are installed inside the multiple material pipes, and sealing plugs are installed inside the material shut-off valves. The sealing plugs are opened by rotating the starting components. Air guide pipes are provided on the outside of the multi-stage cyclone. Multiple starting components are located inside the air guide pipes. A first rotating rod is installed inside the air guide pipe. Fan blades are installed obliquely on the surface of the first rotating rod. The first rotating rod is movably installed inside the air guide pipe and is movably connected to the starting components.

[0007] A mounting bearing is fixedly sleeved on the surface of the first rotating rod, and a mounting bracket is provided on the surface of the mounting bearing. The mounting bracket and the mounting bearing are fixedly connected by a connecting rod.

[0008] The starting assembly includes a second rotating rod, which is movably installed inside the gas guide pipe. One end of the second rotating rod movably passes through the gas guide pipe and the material shut-off valve and is fixedly installed on the surface of the sealing plug. A first sealing bearing is fixedly embedded on the surface of the material shut-off valve, and the surface of the second rotating rod is fixedly connected to the inner wall of the first sealing bearing.

[0009] A first bevel gear is fixedly sleeved on the surface of the first rotating rod, and a second bevel gear is installed on the surface of the second rotating rod. The first bevel gear meshes with the second bevel gear, and the diameter of the first bevel gear is smaller than the length and width of the air guide pipe.

[0010] The material shut-off valve is cylindrical, and the shape of the sealing plug is adapted to the internal shape of the material shut-off valve. The sealing plug has a cavity inside, and a feed inlet is opened on the surface of the sealing plug. The feed inlet of the sealing plug corresponds to the feed end position of the material shut-off valve.

[0011] A sealing disc is installed inside the material pipeline. The diameter of the sealing disc is adapted to the inner diameter of the material pipeline. A third rotating rod is installed on the surface of the sealing disc. One end of the third rotating rod movably passes through the material pipeline and extends into the interior of the air guide pipe. A drive assembly that cooperates with the rotation of the sealing plug is installed on the surface of the third rotating rod.

[0012] The drive assembly includes a first gear and a second gear. The first gear is fixedly sleeved on the surface of the second rotating rod, and the second gear is fixedly sleeved on the surface of the third rotating rod. The first gear meshes with the second gear, and the first gear and the second gear are exactly the same size.

[0013] The surface of the third rotating rod is fixedly fitted with a second sealed bearing, which is embedded in the surface of the material pipeline.

[0014] The lower end of the air guide inner cylinder is flush with the upper end of the cone of the cyclone. A tapered tube is installed inside the air guide inner cylinder, and the lower end diameter of the tapered tube is larger than the upper end diameter.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, by setting up an air guide pipe, fan blades, and a first rotating rod, the airflow enters the interior of the air guide pipe. When the airflow passes through the fan blades, the wind force causes the first rotating rod connected to the fan blades to rotate. The rotation of the first rotating rod causes the sealing plug to rotate, and a certain amount of material will fall onto the surface of the sealing plug. Therefore, each rotation causes the material on the surface of the sealing plug to fall into the interior of the material pipe of the next layer, and a temporary seal can be achieved. This process utilizes the excess wind force of the hot airflow for control, reducing energy consumption and controlling operating costs.

[0017] In this invention, a sealing disc and a sealing plug are used together. When the sealing plug collects material, the sealing disc opens, and the material falls below the sealing disc due to gravity. The sealing plug is used for sealing. When the sealing plug rotates and pours the material onto the surface of the sealing disc, the sealing plug is in an open state, allowing the material to be poured onto the surface of the sealing disc. The sealing disc is used for sealing. The combination of the two can reduce the loss of heat and airflow.

[0018] In this invention, by setting a second rotating rod, a first gear, and a second gear, the rotation of the second rotating rod will drive the first gear to rotate. Since the first gear and the second gear mesh, the second gear will rotate, and the second gear will drive the third rotating rod to rotate. No additional power is needed to drive the rotation of the third rotating rod, thus reducing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the material shut-off valve position of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention.

[0021] Figure 3 This is a schematic diagram of the cyclone section of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the gas guide pipe of the energy-saving and environmentally friendly clinker calcination preheating device of the present invention.

[0023] Figure 5 This is a schematic diagram of the first bevel gear position of an energy-saving and environmentally friendly clinker calcination preheating device of the present invention;

[0024] Figure 6 This is a schematic diagram of the sealing disc position of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention.

[0025] Figure 7This is a schematic diagram of the first sealed bearing position of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention.

[0026] Figure 8 This is a schematic diagram of the conical tube portion of an energy-saving and environmentally friendly clinker calcination preheating device according to the present invention.

[0027] In the diagram: 1. Cyclone; 2. Inner air guide cylinder; 3. Air inlet pipe; 4. Material pipe; 5. Ventilation pipe; 6. Material passage pipe; 7. Material shut-off valve; 8. Sealing plug; 9. Air guide pipe; 10. First rotating rod; 11. Fan blade; 12. Mounting bearing; 13. Mounting bracket; 14. Connecting rod; 15. Second rotating rod; 16. First sealed bearing; 17. First bevel gear; 18. Second bevel gear; 19. Sealing disc; 20. Third rotating rod; 21. First gear; 22. Second gear; 23. Second sealed bearing; 24. Conical tube; 25. Feed inlet. Detailed Implementation

[0028] 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.

[0029] like Figure 1-8 As shown, an energy-saving and environmentally friendly clinker calcination preheating device includes a multi-stage cyclone separator 1. The cyclone separator 1 is generally conical in shape. An inner air guide cylinder 2 is installed inside the cyclone separator 1, and the inner air guide cylinder 2 and the cyclone separator 1 are integrated. The top of the inner air guide cylinder 2 extends to the outside of the cyclone separator 1, and the bottom of the inner air guide cylinder 2 extends to the inside of the cyclone separator 1. An air inlet pipe 3 is fixedly installed on the surface of the cyclone separator 1. The air inlet pipe 3 is installed at a position relatively close to the top of the cyclone separator 1, and the height of the air inlet end of the air inlet pipe 3 is lower than that of the air outlet end, so that the gas is... The movement path is from bottom to top. An inclined material pipe 4 is fixedly installed on the surface of the air inlet pipe 3. The inlet end of the material pipe 4 is higher than the outlet end. When placing raw materials, they mainly rely on their own gravity to enter the interior of the air inlet pipe 3. The air inlet pipe 3 is connected to the interior of the adjacent air guide cylinder 2 below through the air passage pipe 5. The airflow of the lower air guide cylinder 2 is transmitted to the upper part to preheat the raw materials above and reduce the waste of heat energy. The discharge port of the cyclone 1 is connected to the interior of the material pipe 4 through the material passage pipe 6.

[0030] The material moves from the upper cyclone 1 to the lower cyclone 1, while the hot air flows from the lower inlet pipe 3 to the top inlet pipe 3. The material first enters the cyclone 1 at the same height from the uppermost material pipe 4. At this position, the cyclone 1 is furthest from the initial position of the hot air, resulting in the lowest temperature and initial preheating of the material. The material then falls from the cyclone 1 through the feed pipe 6 and onto the next cyclone 1. At this position, the cyclone 1 is closer to the hot air, resulting in higher heat and further heating. This process is repeated until the material reaches the lowermost cyclone 1, where the temperature is significantly higher, typically around 900°C. The material is heated in stages, preventing large temperature differences during preheating and ensuring more uniform preheating of the raw material. This also reduces energy waste and makes the entire system more energy-efficient.

[0031] Material shut-off valves 7 are installed inside the multiple material pipes 4. The main function of the material shut-off valves 7 is to add materials. A sealing plug 8 is installed inside the material shut-off valve 7, blocking the inside of the valve and thus sealing the material pipe 4, allowing only hot airflow through. The sealing plug 8 is opened by rotating an actuating component. When the actuating component is opened, the sealing plug 8 opens the material channel, allowing material to be added. An air guide pipe 9 is provided on the outside of the multi-stage cyclone 1. The air inlet of the air guide pipe 9 is installed at the air outlet of the topmost air guide inner cylinder 2. The cross-section of the air guide pipe 9 is rectangular. All the starting components are located inside the air guide pipe 9, so that the airflow passes through all the starting components. A first rotating rod 10 is installed inside the air guide pipe 9. The first rotating rod 10 is located in the middle of the air guide pipe 9, and the surface of the first rotating rod 10 is a certain distance away from the inner wall of the air guide pipe 9, so that there is enough space for the airflow to move. Fan blades 11 are installed at an angle on the surface of the first rotating rod 10. The airflow blows on the surface of the fan blades 11 during the flow. Because the surface of the fan blades 11 is inclined, the first rotating rod 10 can be rotated. The first rotating rod 10 is movably installed inside the air guide pipe 9 and is movably connected to the starting components.

[0032] During use, as the hot air flows from the bottom to the top, the heat is gradually dissipated, but there is still a certain amount of wind force. At this time, the airflow will enter the interior of the air guide pipe 9. The airflow passes through the position of the fan blade 11. Since the surface of the fan blade 11 is inclined, the wind force will cause the first rotating rod 10 connected to the fan blade 11 to rotate. The rotation of the first rotating rod 10 will drive the sealing plug 8 to rotate. A certain amount of material will fall on the surface of the sealing plug 8. Therefore, each rotation will cause the material on the surface of the sealing plug 8 to fall into the interior of the material pipe 4 of the next layer, and can achieve temporary sealing. This process uses the excess wind force of the hot airflow for control, reducing energy consumption and controlling operating costs. Especially when there are many material pipes 4, the cost control will be even less.

[0033] A mounting bearing 12 is fixedly sleeved on the surface of the first rotating rod 10. A mounting bracket 13 is provided on the surface of the mounting bearing 12. The mounting bracket 13 is fixed inside the air guide pipe 9. The shape of the mounting bracket 13 is adapted to the inner wall structure of the air guide pipe 9. The mounting bracket 13 and the mounting bearing 12 are fixedly connected by connecting rods 14. There are four connecting rods 14 to ensure that there is enough space for airflow. The mounting bearing 12 can fix the first rotating rod 10 in a suitable position and ensure the rotation of the first rotating rod 10.

[0034] The starting assembly includes a second rotating rod 15, which is movably installed inside the gas guide pipe 9. One end of the second rotating rod 15 movably passes through the gas guide pipe 9 and the material shut-off valve 7 and is fixedly installed on the surface of the sealing plug 8. A first sealing bearing 16 is fixedly embedded on the surface of the material shut-off valve 7. The first sealing bearing 16 can ensure the sealing of the material pipe 4. The surface of the second rotating rod 15 is fixedly connected to the inner wall of the first sealing bearing 16. When the second rotating rod 15 rotates, it will drive the sealing plug 8 to rotate.

[0035] A first bevel gear 17 is fixedly sleeved on the surface of the first rotating rod 10, and a second bevel gear 18 is installed on the surface of the second rotating rod 15. The first bevel gear 17 and the second bevel gear 18 mesh. When the first rotating rod 10 rotates, it will drive the first bevel gear 17 to rotate. Since the first bevel gear 17 meshes with the second bevel gear 18, it can drive the second bevel gear 18 to rotate. The rotation of the second bevel gear 18 will drive the second rotating rod 15 to rotate. The diameter of the first bevel gear 17 is smaller than the length and width of the air guide pipe 9, ensuring that there is enough space inside the air guide pipe 9 for airflow.

[0036] The material shut-off valve 7 is cylindrical, and the shape of the sealing plug 8 is adapted to the internal shape of the material shut-off valve 7. The sealing plug 8 has a cavity inside, and the surface of the sealing plug 8 has a feed inlet 25. The feed inlet 25 of the sealing plug 8 corresponds to the feed end position of the material shut-off valve 7.

[0037] When the feed inlet 25 of the sealing plug 8 faces upward, the material will enter the cavity inside the sealing plug 8 through the feed inlet 25 and accumulate. At this time, the lower surface of the sealing plug 8 will block the lower discharge end, and the material pipe 4 at this position will be blocked to ensure sealing.

[0038] A sealing butterfly plate 19 is installed inside the material pipeline 4. The diameter of the sealing butterfly plate 19 is adapted to the inner diameter of the material pipeline 4. The side of the sealing butterfly plate 19 is arc-shaped. A third rotating rod 20 is installed on the surface of the sealing butterfly plate 19. The rotation of the third rotating rod 20 will drive the rotation of the sealing butterfly plate 19. When the sealing butterfly plate 19 is completely horizontal, it is in a sealed state. One end of the third rotating rod 20 moves through the material pipeline 4 and extends into the interior of the air guide pipe 9. A drive assembly that cooperates with the rotation of the sealing plug 8 is installed on the surface of the third rotating rod 20.

[0039] When in use, the sealing butterfly plate 19 needs to be used in conjunction with the sealing plug 8. When the sealing plug 8 collects materials, the sealing butterfly plate 19 opens, and the materials fall below the sealing butterfly plate 19 due to gravity. At this time, the sealing plug 8 is used for sealing. When the sealing plug 8 rotates and pours the materials onto the surface of the sealing butterfly plate 19, the sealing plug 8 is in the open state, which allows the materials to be poured onto the surface of the sealing butterfly plate 19. At this time, the sealing butterfly plate 19 is used for sealing. The two working together can reduce the loss of heat and airflow.

[0040] The drive assembly includes a first gear 21 and a second gear 22. The first gear 21 is fixedly sleeved on the surface of the second rotating rod 15, and the second gear 22 is fixedly sleeved on the surface of the third rotating rod 20. The first gear 21 and the second gear 22 mesh with each other. The first gear 21 and the second gear 22 are exactly the same size to ensure that the rotation directions are exactly the same. When the second rotating rod 15 rotates, it will drive the first gear 21 to rotate. Since the first gear 21 and the second gear 22 mesh, the second gear 22 will rotate. The second gear 22 drives the third rotating rod 20 to rotate. No additional power is needed to drive the rotation of the third rotating rod 20, thus reducing costs.

[0041] The surface of the third rotating rod 20 is fixedly sleeved with a second sealing bearing 23. The inner diameter of the second sealing bearing 23 is adapted to the diameter of the third rotating rod 20. The second sealing bearing 23 ensures sufficient sealing. The second sealing bearing 23 is fixedly embedded in the surface of the material pipe 4.

[0042] The lower end of the air guide inner cylinder 2 is flush with the upper end of the cone of the cyclone 1. A conical tube 24 is installed inside the air guide inner cylinder 2. The lower diameter of the conical tube 24 is larger than the upper diameter. When the airflow moves the material, some of it may move into the interior of the air guide inner cylinder 2. The conical tube 24 can play a partial blocking role to prevent material waste.

[0043] It should be noted that this invention is an energy-saving and environmentally friendly clinker calcination preheating device. During use, the material moves from the upper cyclone 1 to the lower cyclone 1, while the hot airflow moves from the lower inlet pipe 3 to the top inlet pipe 3. The material first enters the cyclone 1 at the same height from the uppermost material pipe 4. At this position, the cyclone 1 is furthest from the initial position of the hot airflow, resulting in the lowest temperature and initial preheating of the material. The material then falls from this position through the material passage pipe 6 and onto the next layer of cyclone 1. At this point, the cyclone 1 is closer to the hot airflow, resulting in higher heat and further heating. This process is repeated. During this process, as the hot airflow moves from the bottom to the top, heat is gradually dissipated, but a certain amount of airflow remains. The airflow then flows into the guide pipe. Inside the air duct 9, the airflow passes through the fan blade 11. Due to the inclined surface of the fan blade 11, the wind force causes the first rotating rod 10 connected to the fan blade 11 to rotate. The rotation of the first rotating rod 10 drives the sealing plug 8 and the first gear 21 to rotate, which in turn drives the first bevel gear 17 to rotate. Since the first bevel gear 17 meshes with the second bevel gear 18, the rotation of the second bevel gear 18 drives the second rotating rod 15 to rotate. The first gear 21 and the second gear 22 mesh, thus causing the second gear 22 to rotate. The second gear 22 drives the third rotating rod 20 to rotate. No additional power is needed to drive the rotation of the third rotating rod 20. The sealing butterfly plate 19 needs to be used in conjunction with the sealing plug 8. The use of both can reduce the loss of heat and wind power, control and reduce costs, and achieve temporary sealing. This process uses the excess wind power of the hot airflow for control, reducing energy consumption and controlling operating costs. Especially when there are many material ducts 4, the cost control will be even more significant.

[0044] 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 and environmentally friendly clinker calcination preheating device, comprising a multi-stage cyclone separator (1), characterized in that: The cyclone (1) is equipped with an air guide inner cylinder (2), and an air inlet pipe (3) is fixedly installed on the surface of the cyclone (1). The height of the air inlet end of the air inlet pipe (3) is lower than that of the air outlet end. An inclined material pipe (4) is fixedly installed on the surface of the air inlet pipe (3). The air inlet pipe (3) is connected to the interior of the adjacent air guide inner cylinder (2) below through a ventilation pipe (5). The discharge port of the cyclone (1) is connected to the interior of the material pipe (4) through a material passage pipe (6). Material shut-off valves (7) are installed inside the multiple material pipes (4), and sealing plugs (8) are installed inside the material shut-off valves (7). The sealing plugs (8) are opened by rotating the starting components. Air guide pipes (9) are provided on the outside of the multi-stage cyclone (1). Multiple starting components are located inside the air guide pipes (9). A first rotating rod (10) is installed inside the air guide pipes (9). Fan blades (11) are installed obliquely on the surface of the first rotating rod (10). The first rotating rod (10) is movably installed inside the air guide pipes (9). The first rotating rod (10) is movably connected to the starting components. The material pipe (4) is equipped with a sealing butterfly plate (19), the diameter of which is adapted to the inner diameter of the material pipe (4). A third rotating rod (20) is installed on the surface of the sealing butterfly plate (19). One end of the third rotating rod (20) moves through the material pipe (4) and extends into the interior of the air guide pipe (9). A drive assembly that rotates in conjunction with the sealing plug (8) is installed on the surface of the third rotating rod (20).

2. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 1, characterized in that: The first rotating rod (10) is fixedly fitted with a mounting bearing (12), and the mounting bearing (12) is provided with a mounting bracket (13). The mounting bracket (13) and the mounting bearing (12) are fixedly connected by a connecting rod (14).

3. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 1, characterized in that: The starting assembly includes a second rotating rod (15), which is movably installed inside the gas guide pipe (9). One end of the second rotating rod (15) movably passes through the gas guide pipe (9) and the material shut-off valve (7) and is fixedly installed on the surface of the sealing plug (8). The surface of the material shut-off valve (7) is fixedly inlaid with a first sealing bearing (16), and the surface of the second rotating rod (15) is fixedly connected to the inner wall of the first sealing bearing (16).

4. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 3, characterized in that: The surface of the first rotating rod (10) is fixedly fitted with a first bevel gear (17), and the surface of the second rotating rod (15) is fitted with a second bevel gear (18). The first bevel gear (17) meshes with the second bevel gear (18), and the diameter of the first bevel gear (17) is smaller than the length and width inside the air guide pipe (9).

5. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 1, characterized in that: The material shut-off valve (7) is cylindrical, and the shape of the sealing plug (8) is adapted to the internal shape of the material shut-off valve (7). The sealing plug (8) has a cavity inside, and the surface of the sealing plug (8) has a feed inlet (25). The feed inlet (25) of the sealing plug (8) corresponds to the feed end position of the material shut-off valve (7).

6. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 5, characterized in that: The drive assembly includes a first gear (21) and a second gear (22). The first gear (21) is fixedly sleeved on the surface of the second rotating rod (15), and the second gear (22) is fixedly sleeved on the surface of the third rotating rod (20). The first gear (21) meshes with the second gear (22), and the first gear (21) and the second gear (22) are exactly the same size.

7. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 6, characterized in that: The surface of the third rotating rod (20) is fixedly fitted with a second sealed bearing (23), which is fixedly embedded in the surface of the material pipe (4).

8. The energy-saving and environmentally friendly clinker calcination preheating device according to claim 1, characterized in that: The lower end of the air guide inner cylinder (2) is flush with the upper end of the cone of the cyclone tube (1). A tapered tube (24) is installed inside the air guide inner cylinder (2), and the lower end diameter of the tapered tube (24) is larger than the upper end diameter.

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