Cement raw meal silo preheater

Abstract

This invention relates to the field of preheater technology, specifically to a vertical preheater for cement raw meal powder. A vertical preheater for cement raw meal powder includes a cylinder and a discharge pipe mounted on the preheater body. An air inlet pipe assembly is fixedly inserted into the side wall of the cylinder, and the air inlet pipe assembly includes multiple air inlet pipes. A working box is fixedly connected to the side wall of each air inlet pipe. The beneficial effects of this invention are: this vertical preheater for cement raw meal powder can automatically adjust the air inlet pipes of different diameters according to the wind speed, thereby ensuring a more uniform wind speed entering the cylinder, avoiding increased energy consumption due to excessive wind speed, and preventing the separation efficiency and effect from being affected by excessively low wind speed. This ensures separation efficiency and effect while reducing energy consumption, making it more energy-efficient and environmentally friendly, thus guaranteeing preheating efficiency and effect; it can also automatically break up clumps of cement raw meal powder, ensuring preheating efficiency and effect.

Description

Technical Field

[0001] This invention relates to the field of preheater technology, specifically to a vertical cylinder preheater for cement raw meal powder. Background Technology

[0002] In the cement production process, a rotary kiln is used to heat and sinter cement raw meal into clinker. At the same time, the rotary kiln generates high-temperature flue gas during production. If the flue gas is directly discharged, it will waste heat and is not energy-efficient or environmentally friendly. Currently, a vertical cylinder preheater is usually used to preheat the cement raw meal using the heat of the exhaust gas. After preheating, the flue gas is separated, and the separated cement raw meal then enters the rotary kiln for sintering. The thermal efficiency, separation efficiency, and temperature rise coefficient of the vertical cylinder preheater are all lower than those of the cyclone preheater. However, due to its larger space, it is more adaptable to raw materials and fuels than the cyclone preheater, so it is chosen by enterprises whose raw materials and fuels contain high levels of "harmful components". To compensate for the poor gas-solid separation capacity, a cyclone preheater is connected in series at the top of the vertical cylinder to form a complete preheating system.

[0003] CN1004299B discloses a vertical preheater system for cement raw meal powder. However, existing vertical preheaters for cement raw meal powder are not convenient to adjust according to the air inlet speed during use. If the air inlet speed is too high, it will increase energy consumption. If the air inlet speed is too low, it will affect the separation efficiency and effect, and thus affect the preheating efficiency and effect of cement raw meal powder. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a vertical preheater for cement raw meal powder. This solves the problem that existing vertical preheaters for cement raw meal powder are inconvenient to adjust based on the air intake speed. If the air intake speed is too high, energy consumption will increase; if the air intake speed is too low, the separation efficiency and effect will be affected, thus impacting the preheating efficiency and effect of the cement raw meal powder.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A vertical cylinder preheater for cement raw meal powder includes a cylinder body and a discharge pipe disposed on the main body of the vertical cylinder preheater. An air inlet pipe assembly is fixedly inserted into the side wall of the cylinder body, and the air inlet pipe assembly includes multiple air inlet pipes. A working box is fixedly connected to the side wall of the air inlet pipe, and an L-shaped pipe is fixedly connected to the side wall of the working box. A fixing box is fixedly connected to the lower end of the L-shaped pipe, and a connecting pipe is fixedly connected to the bottom of the fixing box. A partition is fixedly inserted into the working box, and a feeding valve is fixedly connected to the top of the working box. The partition has a circular hole on its side wall, and a filter disc is inserted into the circular hole. A support plate is fixedly connected to the bottom of the working box, and a first rotating shaft is rotatably connected to the side wall of the support plate through a drive mechanism. A second rotating shaft is fixedly connected to the end of the filter disc, and a connecting mechanism is provided between the second rotating shaft and the first rotating shaft. A first moving plate is connected to the side wall of the working box near the air inlet pipe through a moving mechanism, and a through hole is provided on the side wall of the first moving plate. A crushing mechanism for crushing the cement raw material powder that has clumped on the filter disc is provided on the side wall of the partition.

[0006] The beneficial effects of this invention are:

[0007] 1) By setting up a moving mechanism, during preheating, the exhaust gas generated by the rotary kiln enters the fixed box through the exhaust gas pipe and connecting pipe, and then enters the working box through the L-shaped pipe. At the same time, cement raw meal powder is fed into the working box through the feeding valve, and along with the exhaust gas, it passes through the filter plate and then enters the cylinder through the through hole and air inlet pipe for preheating and separation. The preheated cement raw meal powder can be discharged through the discharge pipe after separation and enter the rotary kiln for sintering into clinker. Meanwhile, when the exhaust gas and cement raw meal powder impact the surface of the filter plate, it can push the filter plate to move closer to the support plate. At the same time, it drives the second rotating shaft to move, so that the insert plate can slide in the slot. The first spring and the first telescopic cover are compressed. Furthermore, when the second rotating shaft moves, it can drive the push rod to move upward along the inclined groove through the moving rod. This causes the second moving plate to move upward, which in turn drives the first moving plate and the through hole to move upward. Furthermore, the higher the wind speed, the greater the travel of the filter disc and the second rotating shaft, and the greater the upward travel of the first moving plate. This allows the through hole to align with the larger diameter air inlet pipe, thus reducing the wind speed entering the cylinder. Conversely, the lower the wind speed, the smaller the travel of the filter disc and the second rotating shaft, and the smaller the upward travel of the first moving plate. This allows the through hole to align with the smaller diameter air inlet pipe, thus increasing the wind speed entering the cylinder. This ensures a more uniform wind speed entering the cylinder, preventing excessive wind speed from increasing energy consumption. Simultaneously, it prevents insufficient wind speed from affecting separation efficiency and effect, ensuring separation efficiency and effect while reducing energy consumption, making it more energy-efficient and environmentally friendly, and thus ensuring preheating efficiency and effect.

[0008] 2) By setting up a crushing mechanism, during preheating, when the exhaust gas enters the fixed box, it impacts the surface of the blades, causing the rotating rod to rotate. When the rotating rod rotates, it drives the drive pulley to rotate, which in turn drives the driven pulley and the first rotating shaft to rotate. This, in turn, drives the second rotating shaft and the filter disc to rotate through the insert plate. Under the action of the second spring, the crushing plate and the end of the filter disc are always in contact, thus scraping and cleaning the cement raw material powder that has clumped on the surface of the filter disc. At the same time, under the action of the inclined plane, the powder that has clumped on the surface of the filter disc can be crushed. When the crushing plate comes into contact with the raised surface, it can be pushed to move towards the L-shaped plate. At the same time, the second spring is compressed. When the crushing plate passes the raised surface, it can move back to its original position under the action of the second spring. This reciprocating motion of the crushing plate not only improves the crushing effect of the cement raw material powder, but also creates a vibration effect on the surface of the filter disc, preventing the cement raw material powder from adhering, thereby ensuring the efficiency and effect of preheating.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the moving mechanism includes a second moving plate, which is connected to the side wall of the work box via a sliding mechanism. The side wall of the second moving plate is provided with an inclined groove, and a moving rod is inserted into the side wall of the support plate. One end of the moving rod is rotatably connected to the end of the second rotating shaft, and a push rod is fixedly connected to the side wall of the moving rod. The push rod is inserted into the inclined groove, and a guide mechanism is provided at the bottom of the first moving plate and the work box.

[0011] The beneficial effect of adopting the above-mentioned further solution is that when the exhaust gas and cement raw material powder impact the surface of the filter disc, they can push the filter disc to move closer to the support plate. When the second rotating shaft moves, it can drive the push rod to move upward along the inclined groove through the moving rod, thereby pushing the second moving plate to move upward, and then driving the first moving plate and the through hole to move upward. Moreover, the greater the wind speed, the greater the movement stroke of the filter disc and the second rotating shaft, and the greater the upward movement stroke of the first moving plate, so that the through hole can be aligned with the air inlet pipe with a larger diameter.

[0012] Furthermore, the connecting mechanism includes multiple arrayed slots formed on the side wall of the first rotating shaft, and multiple arrayed insert plates are fixedly connected to the end of the second rotating shaft. The insert plates are inserted into the slots, and a first reset mechanism is provided between the first rotating shaft and the second rotating shaft.

[0013] The beneficial effect of adopting the above-mentioned further solution is that when the exhaust gas and cement raw material powder impact the surface of the filter disc, it can push the filter disc to move closer to the support plate. At the same time, it drives the second rotating shaft to move, so that the insert plate can slide in the slot.

[0014] Furthermore, the first reset mechanism includes a rotating ring rotatably connected to the side wall of the support plate, and a first spring is fixedly connected to the side wall of the rotating ring. The first spring is sleeved on the side wall of the first rotating shaft and the second rotating shaft, and the other end of the first spring is fixed to the end of the filter disc. A first telescopic cover is sleeved on the side wall of the first spring, and the two ends of the first telescopic cover are respectively fixed to the end of the support plate and the end of the filter disc.

[0015] The advantage of adopting the above-mentioned further solution is that it enables the filter disc and the second rotating shaft to be reset.

[0016] Furthermore, the drive mechanism includes a driven pulley fixedly sleeved on the side wall of the first rotating shaft, and the side wall of the fixed box is rotatably connected to a driving pulley through a power mechanism, with the driving pulley and the driven pulley being driven by a belt.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the power mechanism drives the active pulley to rotate, thereby driving the driven pulley and the first rotating shaft to rotate via the belt, and then driving the second rotating shaft and the filter disc to rotate via the insert plate.

[0018] Furthermore, the power mechanism includes a rotating rod rotatably connected to the inner side wall of the fixed box. The side wall of the rotating rod is fixedly connected with a plurality of arrayed blades, and one end of the rotating rod is fixed to the end of the drive pulley.

[0019] The beneficial effect of adopting the above-mentioned further solution is that when the exhaust gas enters the fixed box, it impacts the surface of the blades, which causes the rotating rod to rotate. When the rotating rod rotates, it can drive the drive pulley to rotate.

[0020] Furthermore, the crushing mechanism includes a crushing plate, which is connected to the side wall of the partition via a second reset mechanism. The crushing plate includes an inclined surface, and the end of the filter disc is fixedly connected with a plurality of arrayed protrusions.

[0021] The beneficial effect of adopting the above-mentioned further solution is that, under the action of the second reset mechanism, the crushing plate and the end of the filter disc are always in contact, thereby scraping and cleaning the cement raw material powder that has clumped on the surface of the filter disc. At the same time, under the action of the inclined plane, the powder that has clumped on the surface of the filter disc can be crushed. Furthermore, when the crushing plate is in contact with the raised surface, it can be pushed to move towards the L-shaped plate. When the crushing plate passes the raised surface, it can be reset under the action of the second reset mechanism. By repeating this process, the crushing plate can move back and forth, which not only improves the crushing effect of the cement raw material powder, but also creates a vibration effect on the surface of the filter disc, preventing the cement raw material powder from adhering, thereby ensuring the efficiency and effect of preheating.

[0022] Furthermore, the sliding mechanism includes a guide rail fixedly connected to the inner side wall of the work box, and a slider slidably connected to the guide rail, the slider being fixed to the side wall of the second moving plate.

[0023] The beneficial effect of adopting the above-mentioned further solution is that it guides and limits the movement of the slider.

[0024] Furthermore, the guiding mechanism includes two symmetrically arranged T-shaped guide rods fixedly connected to the bottom of the work box. The side walls of the T-shaped guide rods are fitted with sliding blocks, and the sliding blocks are fixed to the side walls of the first moving plate.

[0025] The beneficial effect of adopting the above-mentioned further solution is that it guides and limits the movement of the first moving plate.

[0026] Furthermore, the second reset mechanism includes an L-shaped plate fixedly connected to the side wall of the partition, and two symmetrically arranged second sleeve rods are fixedly connected to the side wall of the L-shaped plate. The side wall of the second sleeve rod is fitted with a second sleeve, and the other end of the second sleeve is fixed to the side wall of the crushing plate. The side wall of each second sleeve is fitted with a second spring, and the side wall of the second spring is fitted with a second telescopic cover. The two ends of the second telescopic cover are respectively fixed to the side walls of the L-shaped plate and the crushing plate.

[0027] The beneficial effect of adopting the above-mentioned further solution is that it guides and resets the movement of the crushing plate, and under the action of the second spring, the end of the crushing plate and the filter disc are always in contact. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the usage state of the present invention;

[0029] Figure 2 This is a partial cross-sectional view of the working box in this invention;

[0030] Figure 3 This is a cross-sectional view of the working box in this invention from another perspective;

[0031] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0032] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0033] Figure 6 for Figure 3 Enlarged structural diagram at point C;

[0034] Figure 7 for Figure 6 Enlarged structural diagram at point D;

[0035] Figure 8 for Figure 5 A magnified structural diagram at point E in the middle.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Vertical preheater body; 101. Cylinder; 102. Discharge pipe; 201. Second moving plate; 202. Moving rod; 203. Inclined groove; 204. Push rod; 301. Sliding block; 302. T-shaped guide rod; 401. Guide rail; 402. Slider; 501. Slot; 502. Insert plate; 601. Rotating ring; 602. First spring; 603. First telescopic cover; 701. Crushing plate; 702. Inclined surface; 703. Protrusion; 801. L-shaped plate; 802. Second sleeve rod; 803. Second sleeve tube; 804. Second spring; 805. Second telescopic cover; 901. Driven pulley; 902. Driven pulley; 903. Belt; 1001. Rotating rod; 1002. Blade; 11. Rotary kiln; 1101. Exhaust pipe; 12. Fixed box; 13. L-shaped pipe; 14. Working box; 15. Feed valve; 16. Partition plate; 17. Round hole; 18. Filter plate; 19. Support plate; 20. First rotating shaft; 21. Second rotating shaft; 22. Connecting pipe; 23. Through hole; 24. Air inlet pipe; 25. First moving plate. Detailed Implementation

[0038] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0039] In the cement production process, a rotary kiln is used to heat and sinter cement raw meal into clinker. At the same time, the rotary kiln generates high-temperature flue gas during production. If the flue gas is directly discharged, it will waste heat and is not energy-efficient or environmentally friendly. Currently, a vertical cylinder preheater is usually used to preheat the cement raw meal using the heat of the exhaust gas. After preheating, the flue gas is separated, and the separated cement raw meal then enters the rotary kiln for sintering. The thermal efficiency, separation efficiency, and temperature rise coefficient of the vertical cylinder preheater are all lower than those of the cyclone preheater. However, due to its larger space, it is more adaptable to raw materials and fuels than the cyclone preheater, so it is chosen by enterprises whose raw materials and fuels contain high levels of "harmful components". To compensate for the poor gas-solid separation capacity, a cyclone preheater is connected in series at the top of the vertical cylinder to form a complete preheating system.

[0040] After conducting in-depth investigation and research on the use of vertical cylinder preheaters, the inventors discovered that: CN1004299B discloses a vertical cylinder preheater system for cement raw meal powder. However, existing vertical cylinder preheaters for cement raw meal powder are not convenient to adjust according to the air intake speed during use. If the air intake speed is too high, it will increase energy consumption; if the air intake speed is too low, it will affect the separation efficiency and effect, and thus affect the preheating efficiency and effect of cement raw meal powder. In response, the inventors proposed a vertical cylinder preheater for cement raw meal powder to solve the above problems.

[0041] The present invention provides the following preferred embodiments.

[0042] like Figures 1-8 As shown, a vertical preheater for cement raw materials includes a cylinder 101 and a discharge pipe 102 mounted on the preheater body 1. The cylinder 101 and discharge pipe 102 are known technologies in this field and will not be described in detail here. An air inlet pipe assembly is fixedly inserted into the side wall of the cylinder 101, and the air inlet pipe assembly includes multiple air inlet pipes 24. A working box 14 is fixedly connected to the side wall of the air inlet pipe 24, and an L-shaped pipe 13 is fixedly connected to the side wall of the working box 14. A fixing box 12 is fixedly connected to the lower end of the L-shaped pipe 13, and a connecting pipe 22 is fixedly connected to the bottom of the fixing box 12. A partition plate 16 is fixedly inserted inside the working box 14, and a feeding valve 15 is fixedly connected to the top of the working box 14. A circular hole 17 is opened on the side wall of the partition plate 16, and a filter plate 18 is inserted into the circular hole 17. A support plate 19 is fixedly connected to the bottom of the working box 14, and the side wall of the support plate 19 is open to... A first rotating shaft 20 is rotatably connected to the drive mechanism, and a second rotating shaft 21 is fixedly connected to the end of the filter disc 18. A connecting mechanism is provided between the second rotating shaft 21 and the first rotating shaft 20. A first moving plate 25 is connected to the side wall of the working box 14 near the air inlet pipe 24 through a moving mechanism. A through hole 23 is opened on the side wall of the first moving plate 25. A crushing mechanism for crushing the cement raw material powder that has clumped on the filter disc 18 is provided on the side wall of the partition plate 16. The air inlet pipes 24 of different diameters can be automatically adjusted according to the wind speed, so as to ensure that the wind speed entering the cylinder 101 is more uniform, avoid the increase of energy consumption caused by excessive wind speed, and at the same time, avoid the impact of insufficient wind speed on the separation efficiency and effect. While ensuring the separation efficiency and effect, energy consumption is reduced, which is more energy-saving and environmentally friendly, thereby ensuring the preheating efficiency and effect. It can automatically crush the clumped cement raw material powder to ensure the preheating efficiency and effect.

[0043] In this embodiment, as Figure 5 , Figure 6As shown, the moving mechanism includes a second moving plate 201, which is connected to the side wall of the work box 14 via a sliding mechanism. The side wall of the second moving plate 201 has an inclined groove 203. A moving rod 202 is inserted into the side wall of the support plate 19. One end of the moving rod 202 is rotatably connected to the end of the second rotating shaft 21. A pushing rod 204 is fixedly connected to the side wall of the moving rod 202 and is inserted into the inclined groove 203. A guiding mechanism is provided at the bottom of the first moving plate 25 and the work box 14. When exhaust gas and cement raw material powder impact... On the surface of the filter disc 18, the filter disc 18 can be pushed to move closer to the support plate 19. When the second rotating shaft 21 moves, the moving rod 202 can drive the pushing rod 204 to move upward along the inclined groove 203, thereby pushing the second moving plate 201 to move upward, and then driving the first moving plate 25 and the through hole 23 to move upward. Moreover, the greater the wind speed, the greater the movement stroke of the filter disc 18 and the second rotating shaft 21, and the greater the upward movement stroke of the first moving plate 25, so that the through hole 23 can be aligned with the larger diameter air inlet pipe 24.

[0044] In this embodiment, as Figure 7 As shown, the connecting mechanism includes multiple arrayed slots 501 formed on the side wall of the first rotating shaft 20, and multiple arrayed insert plates 502 are fixedly connected to the end of the second rotating shaft 21. The insert plates 502 are inserted into the slots 501, and a first reset mechanism is provided between the first rotating shaft 20 and the second rotating shaft 21. When the exhaust gas and cement raw material powder impact the surface of the filter disc 18, the filter disc 18 can be pushed to move towards the support plate 19. At the same time, the second rotating shaft 21 is moved, so that the insert plates 502 can slide in the slots 501.

[0045] In this embodiment, as Figure 7 As shown, the first reset mechanism includes a rotating ring 601 rotatably connected to the side wall of the support plate 19, and a first spring 602 is fixedly connected to the side wall of the rotating ring 601. The first spring 602 is sleeved on the side wall of the first rotating shaft 20 and the second rotating shaft 21, and the other end of the first spring 602 is fixed to the end of the filter disc 18. A first telescopic cover 603 is sleeved on the side wall of the first spring 602, and the two ends of the first telescopic cover 603 are respectively fixed to the end of the support plate 19 and the filter disc 18, which can reset the filter disc 18 and the second rotating shaft 21.

[0046] In this embodiment, as Figures 5-7As shown, the drive mechanism includes a driven pulley 901 fixedly sleeved on the side wall of the first rotating shaft 20, and a driving pulley 902 rotatably connected to the side wall of the fixed box 12 through a power mechanism. The driving pulley 902 and the driven pulley 901 are driven by a belt 903. The power mechanism drives the driving pulley 902 to rotate, thereby driving the driven pulley 901 and the first rotating shaft 20 to rotate through the belt 903, and then driving the second rotating shaft 21 and the filter disc 18 to rotate through the insert plate 502.

[0047] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, the power mechanism includes a rotating rod 1001 rotatably connected to the inner side wall of the fixed box 12. Multiple arrayed blades 1002 are fixedly connected to the side wall of the rotating rod 1001, and one end of the rotating rod 1001 is fixed to the end of the drive pulley 902. When exhaust gas enters the fixed box 12, it impacts the surface of the blades 1002, causing the rotating rod 1001 to rotate. When the rotating rod 1001 rotates, it can drive the drive pulley 902 to rotate.

[0048] In this embodiment, as Figure 8 As shown, the crushing mechanism includes a crushing plate 701, which is connected to the side wall of the partition 16 via a second reset mechanism. The crushing plate 701 includes an inclined surface 702, and a plurality of arrayed protrusions 703 are fixedly connected to the end of the filter disc 18. Under the action of the second reset mechanism, the crushing plate 701 and the end of the filter disc 18 are always in contact, thereby scraping and cleaning the cement raw material powder clumps on the surface of the filter disc 18. At the same time, under the action of the inclined surface 702, the powder clumps on the surface of the filter disc 18 can be crushed. Furthermore, when the crushing plate 701 abuts against the surface of the protrusion 703, it can push the crushing plate 701 to move closer to the L-shaped plate 801. When the crushing plate 701 passes the protrusion 703, the crushing plate 701 can move and reset under the action of the second reset mechanism. By repeating this process, the crushing plate 701 can move back and forth, which not only improves the crushing effect of cement raw material powder, but also creates a vibration effect on the surface of the filter plate 18, preventing the cement raw material powder from adhering, thereby ensuring the efficiency and effect of preheating.

[0049] In this embodiment, as Figure 6 As shown, the sliding mechanism includes a guide rail 401 fixedly connected to the inner side wall of the work box 14, and a slider 402 slidably connected to the guide rail 401. The slider 402 is fixed to the side wall of the second moving plate 201, which guides and limits the movement of the slider 402.

[0050] In this embodiment, as Figure 5 and Figure 6As shown, the guiding mechanism includes two symmetrically arranged T-shaped guide rods 302 fixedly connected to the bottom of the work box 14. The side wall of the T-shaped guide rod 302 is fitted with a sliding block 301, and the sliding block 301 is fixed to the side wall of the first moving plate 25, which plays a guiding and limiting role in the movement of the first moving plate 25.

[0051] In this embodiment, as Figure 8 As shown, the second reset mechanism includes an L-shaped plate 801 fixedly connected to the side wall of the partition 16, and two symmetrically arranged second sleeve rods 802 are fixedly connected to the side wall of the L-shaped plate 801. The side wall of the second sleeve rod 802 is fitted with a second sleeve 803, and the other end of the second sleeve 803 is fixed to the side wall of the crushing plate 701. The side wall of each second sleeve 803 is fitted with a second spring 804, and the side wall of the second spring 804 is fitted with a second telescopic cover 805. The two ends of the second telescopic cover 805 are respectively fixed to the side wall of the L-shaped plate 801 and the side wall of the crushing plate 701.

[0052] The specific steps for using this invention are as follows:

[0053] During operation, firstly, during preheating, the exhaust gas generated by the rotary kiln 11 enters the fixed box 12 through the exhaust pipe 1101 and connecting pipe 22. Then, it enters the working box 14 through the L-shaped pipe 13. Simultaneously, cement raw meal powder is fed into the working box 14 through the feeding valve 15, and along with the exhaust gas, passes through the filter plate 18, then through the through hole 23 and the air inlet pipe 24 into the cylinder 101 for preheating and separation. The preheated cement raw meal powder can be discharged through the discharge pipe 102 after separation and enter the rotary kiln 11 for sintering into clinker. When exhaust gas and cement raw material powder impact the surface of the filter disc 18, it can push the filter disc 18 to move closer to the support plate 19. At the same time, it drives the second rotating shaft 21 to move, so that the insert plate 502 can slide in the slot 501. The first spring 602 and the first telescopic cover 603 are compressed. When the second rotating shaft 21 moves, it can drive the push rod 204 to move upward along the inclined groove 203 through the moving rod 202, thereby pushing the second moving plate 201 to move upward, and then driving the first moving plate 25 and the through hole 23 to move upward.

[0054] Furthermore, the greater the wind speed, the greater the travel of the filter disc 18 and the second rotating shaft 21, and the greater the upward travel of the first moving plate 25, so that the through hole 23 can be aligned with the larger diameter air inlet pipe 24. At this time, the wind speed entering the cylinder 101 can be reduced. Conversely, when the wind speed is lower, the travel of the filter disc 18 and the second rotating shaft 21 becomes smaller, and the upward travel of the first moving plate 25 becomes smaller, so that the through hole 23 can be aligned with the smaller diameter air inlet pipe 24. At this time, the wind speed entering the cylinder 101 can be increased, thereby ensuring that the wind speed entering the cylinder 101 is more uniform, avoiding excessive wind speed that would increase energy consumption, and at the same time, avoiding excessively low wind speed that would affect the separation efficiency and effect. While ensuring separation efficiency and effect, energy consumption is reduced, making it more energy-saving and environmentally friendly, and thus ensuring the efficiency and effect of preheating.

[0055] Meanwhile, during preheating, when the exhaust gas enters the fixed box 12, it impacts the surface of the blade 1002, causing the rotating rod 1001 to rotate. When the rotating rod 1001 rotates, it drives the driving pulley 902 to rotate, which in turn drives the driven pulley 901 and the first rotating shaft 20 to rotate via the belt 903. This, in turn, drives the second rotating shaft 21 and the filter disc 18 to rotate via the insert plate 502. Under the action of the second spring 804, the crushing plate 701 is always in contact with the end of the filter disc 18, which can scrape and clean the cement raw material powder that has clumped on the surface of the filter disc 18. At the same time, under the action of the inclined surface 702, the powder that has clumped on the surface of the filter disc 18 can be crushed. Furthermore, when the crushing plate 701 is in contact with the surface of the protrusion 703, it can push the crushing plate 701 to move closer to the L-shaped plate 801. At the same time, the second spring 804 is compressed.

[0056] When the crushing plate 701 passes the protrusion 703, the crushing plate 701 can move and reset under the action of the second spring 804. By repeating this process, the crushing plate 701 can move back and forth, which not only improves the crushing effect of cement raw material powder, but also creates a vibration effect on the surface of the filter plate 18, preventing the cement raw material powder from adhering, thereby ensuring the efficiency and effect of preheating.

[0057] In summary, the beneficial effects of this invention are specifically reflected in its ability to automatically adjust the air inlet pipes 24 of different diameters according to the wind speed, thereby ensuring a more uniform wind speed entering the cylinder 101, avoiding excessive energy consumption caused by excessive wind speed, and at the same time avoiding the impact of insufficient wind speed on the separation efficiency and effect. While ensuring the separation efficiency and effect, it reduces energy consumption, making it more energy-efficient and environmentally friendly, and thus ensuring the efficiency and effect of preheating; it can also automatically crush clumps of cement raw material powder, ensuring the efficiency and effect of preheating.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical cylinder preheater for cement raw meal powder, comprising a cylinder (101) and a discharge pipe (102) disposed on the main body (1) of the vertical cylinder preheater, characterized in that, An air inlet pipe assembly is fixedly inserted into the side wall of the cylinder (101), and the air inlet pipe assembly includes multiple air inlet pipes (24). A working box (14) is fixedly connected to the side wall of the air inlet pipe (24), and an L-shaped pipe (13) is fixedly connected to the side wall of the working box (14). A fixed box (12) is fixedly connected to the lower end of the L-shaped pipe (13), and a connecting pipe (22) is fixedly connected to the bottom of the fixed box (12). A partition plate (16) is fixedly inserted into the working box (14), and a feeding valve (15) is fixedly connected to the top of the working box (14). A round hole (17) is opened on the side wall of the partition plate (16), and a filter plate is inserted into the round hole (17). 18), the bottom of the working box (14) is fixedly connected to a support plate (19), and the side wall of the support plate (19) is rotatably connected to a first rotating shaft (20) through a drive mechanism. The end of the filter disc (18) is fixedly connected to a second rotating shaft (21), and a connecting mechanism is provided between the second rotating shaft (21) and the first rotating shaft (20). The side wall of the working box (14) near the air inlet pipe (24) is connected to a first moving plate (25) through a moving mechanism, and the side wall of the first moving plate (25) is provided with a through hole (23). The side wall of the partition plate (16) is provided with a crushing mechanism for crushing the cement raw material powder that has clumped on the filter disc (18).

2. A vertical preheater for cement raw meal powder according to claim 1, characterized in that, The moving mechanism includes a second moving plate (201), and the second moving plate (201) is connected to the side wall of the work box (14) through a sliding mechanism. The side wall of the second moving plate (201) is provided with a slanted groove (203), and a moving rod (202) is inserted into the side wall of the support plate (19). One end of the moving rod (202) is rotatably connected to the end of the second rotating shaft (21), and a push rod (204) is fixedly connected to the side wall of the moving rod (202). The push rod (204) is inserted into the slanted groove (203), and a guide mechanism is provided at the bottom of the first moving plate (25) and the work box (14).

3. A vertical preheater for cement raw meal powder according to claim 1, characterized in that, The connecting mechanism includes multiple arrayed slots (501) opened on the side wall of the first rotating shaft (20), and multiple arrayed insert plates (502) are fixedly connected to the end of the second rotating shaft (21). The insert plates (502) are inserted into the slots (501), and a first reset mechanism is provided between the first rotating shaft (20) and the second rotating shaft (21).

4. A vertical preheater for cement raw meal powder according to claim 3, characterized in that, The first reset mechanism includes a rotating ring (601) rotatably connected to the side wall of the support plate (19), and a first spring (602) is fixedly connected to the side wall of the rotating ring (601). The first spring (602) is sleeved on the side wall of the first rotating shaft (20) and the second rotating shaft (21), and the other end of the first spring (602) is fixed to the end of the filter disc (18). A first telescopic cover (603) is sleeved on the side wall of the first spring (602), and the two ends of the first telescopic cover (603) are fixed to the end of the support plate (19) and the filter disc (18) respectively.

5. A vertical preheater for cement raw meal powder according to claim 4, characterized in that, The drive mechanism includes a driven pulley (901) fixedly sleeved on the side wall of the first rotating shaft (20), and a driving pulley (902) is rotatably connected to the side wall of the fixed box (12) through a power mechanism. The driving pulley (902) and the driven pulley (901) are driven by a belt (903).

6. A vertical preheater for cement raw meal powder according to claim 5, characterized in that, The power mechanism includes a rotating rod (1001) rotatably connected to the inner side wall of the fixed box (12). The side wall of the rotating rod (1001) is fixedly connected with a plurality of arrayed blades (1002), and one end of the rotating rod (1001) is fixed to the end of the drive pulley (902).

7. A vertical preheater for cement raw meal powder according to claim 1, characterized in that, The crushing mechanism includes a crushing plate (701), and the crushing plate (701) is connected to the side wall of the partition (16) through a second reset mechanism. The crushing plate (701) includes an inclined surface (702), and the end of the filter disc (18) is fixedly connected with a plurality of arrayed protrusions (703).

8. A vertical preheater for cement raw meal powder according to claim 2, characterized in that, The sliding mechanism includes a guide rail (401) fixedly connected to the inner side wall of the work box (14), and a slider (402) slidably connected on the guide rail (401). The slider (402) is fixed to the side wall of the second moving plate (201).

9. A vertical preheater for cement raw meal powder according to claim 2, characterized in that, The guiding mechanism includes two symmetrically arranged T-shaped guide rods (302) fixedly connected to the bottom of the work box (14). The side wall of the T-shaped guide rod (302) is fitted with a sliding block (301), and the sliding block (301) is fixed to the side wall of the first moving plate (25).

10. A vertical preheater for cement raw meal powder according to claim 7, characterized in that, The second reset mechanism includes an L-shaped plate (801) fixedly connected to the side wall of the partition (16), and two symmetrically arranged second sleeve rods (802) are fixedly connected to the side wall of the L-shaped plate (801). The side wall of the second sleeve rod (802) is fitted with a second sleeve (803), and the other end of the second sleeve (803) is fixed to the side wall of the crushing plate (701). The side wall of each second sleeve (803) is fitted with a second spring (804), and the side wall of the second spring (804) is fitted with a second telescopic cover (805). The two ends of the second telescopic cover (805) are respectively fixed to the side wall of the L-shaped plate (801) and the side wall of the crushing plate (701).

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