Cement raw material powder vertical cylinder preheater

Abstract

The invention relates to the technical field of preheaters, in particular to a cement raw material powder vertical cylinder preheater. The cement raw material powder vertical cylinder preheater comprises a cylinder body and a discharging pipe which are arranged on a vertical cylinder preheater body, an air inlet pipe set is fixedly inserted in the side wall of the cylinder body, the air inlet pipe set comprises a plurality of air inlet pipes, and the side walls of the air inlet pipes are fixedly connected with a working box. Compared with the prior art, the cement raw material powder vertical cylinder preheater has the beneficial effects that the air inlet pipes with different diameters can be automatically adjusted according to the air speed, so that the air speed entering the cylinder body can be more uniform, energy consumption increase caused by too large air speed is avoided, meanwhile, the situation that separation efficiency and effect are affected by too small air speed is avoided, and the service life of the preheater is prolonged. The energy consumption is reduced while the separation efficiency and the separation effect are ensured, so that the device is more energy-saving and environment-friendly, and further the preheating efficiency and the preheating effect are ensured; and caked cement raw material powder can be automatically crushed, and the preheating efficiency and effect are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of preheaters, and particularly to a vertical cylinder preheater for cement raw meal powder. Background Art

[0002] In the production process of cement, a rotary kiln is required to heat and sinter cement raw meal powder to form clinker. At the same time, during the production process of the rotary kiln, high-temperature flue gas will be generated. If directly discharged, it will cause waste of heat and is not energy-saving and environmentally friendly. Currently, a vertical cylinder preheater is usually adopted to preheat cement raw meal powder by using the heat of waste gas, and after preheating, separation is carried out. The separated cement raw meal powder 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. Due to its large space and higher adaptability to raw materials and fuels than the cyclone cylinder, it is selected by enterprises with high "harmful components" in raw materials and fuels. To make up for the deficiency of poor gas-solid separation ability, a cyclone preheater is connected in series at the upper part of the vertical cylinder to form a complete preheating system.

[0003] Publication No. CN1004299B discloses a vertical cylinder preheater system for cement raw meal powder. However, when the existing vertical cylinder preheater for cement raw meal powder is in use, it is not convenient to adjust the air inlet speed. If the air inlet speed is relatively large, it will cause an increase in energy consumption. If the air inlet speed is relatively small, it will affect the separation efficiency and effect, and further affect the preheating efficiency and effect of the cement raw meal powder. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a vertical cylinder preheater for cement raw meal powder to solve the problem that when the existing vertical cylinder preheater for cement raw meal powder is in use, it is not convenient to adjust the air inlet speed. If the air inlet speed is relatively large, it will cause an increase in energy consumption. If the air inlet speed is relatively small, it will affect the separation efficiency and effect, and further affect the preheating efficiency and effect of the cement raw meal powder.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A vertical cylinder preheater for cement raw meal powder, including a cylinder body and a discharge pipe arranged on the vertical cylinder preheater body. An air inlet pipe group is fixedly inserted on the side wall of the cylinder body, and the air inlet pipe group includes a plurality of 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. The lower end of the L-shaped pipe is fixedly connected to a fixed box, and a connecting pipe is fixedly connected to the bottom of the fixed box. A partition is fixedly inserted in the working box, and a feeding valve is fixedly connected to the top of the working box. A round hole is opened on the side wall of the partition, and a filter disc is inserted in the round 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 driving mechanism. The end of the filter disc is fixedly connected to a second rotating shaft, and a connecting mechanism is arranged between the second rotating shaft and the first rotating shaft. A first moving plate is connected to the side wall of the working box close to the air inlet pipe through a moving mechanism, and a through hole is opened on the side wall of the first moving plate. A crushing mechanism is arranged on the side wall of the partition for crushing the caked cement raw meal powder on the filter disc.

[0006] The beneficial effects of the present invention are:

[0007] 1). By setting a moving mechanism, etc., during preheating, the waste gas generated by the rotary kiln enters the fixed box through the waste gas pipe and the connecting pipe. Then, it enters the working box through the L-shaped pipe. At the same time, the cement raw meal powder is fed into the working box through the feeding valve and enters the cylinder body through the filter disc, the through hole and the air inlet pipe together with the waste gas for preheating and separation. The preheated cement raw meal powder can be discharged through the discharge pipe and enter the rotary kiln for sintering to form clinker after separation. At the same time, when the waste gas and the cement raw meal powder impact on the surface of the filter disc, it can push the filter disc to move towards the support plate, and at the same time, drive the second rotating shaft to move, so that the insertion plate can slide in the slot, and the first spring and the first telescopic cover are compressed. And when the second rotating shaft moves, it can drive the push rod to move upward along the inclined slot through the moving rod, so as to push the second moving plate upward, and then drive the first moving plate and the through hole upward. And the greater the wind speed, the greater the moving stroke of the filter disc and the second rotating shaft, and the greater the upward moving stroke of the first moving plate, so that the through hole can be aligned with the air inlet pipe with a larger diameter. At this time, the wind speed entering the cylinder body can be reduced. On the contrary, when the wind speed is smaller, the moving stroke of the filter disc and the second rotating shaft becomes smaller, and the upward moving stroke of the first moving plate becomes smaller, so that the through hole can be aligned with the air inlet pipe with a smaller diameter. At this time, the wind speed entering the cylinder body can be increased, so as to ensure that the wind speed entering the cylinder body is more uniform, avoid excessive wind speed causing increased energy consumption, and at the same time, avoid too small wind speed affecting the separation efficiency and effect. While ensuring the separation efficiency and effect, it reduces energy consumption, is more energy-saving and environmentally friendly, and further ensures the preheating efficiency and effect.

[0008] 2) By setting up a crushing mechanism, etc., during preheating, when the waste gas enters the fixed box, it impacts on the surface of the blade, enabling the rotating rod to rotate. When the rotating rod rotates, it can drive the driving pulley to rotate, and then drive the driven pulley and the first rotating shaft to rotate through the belt. Furthermore, it drives the second rotating shaft and the filter disc to rotate through the insertion plate. Under the action of the second spring, the crushing plate always abuts against the end of the filter disc, so as to scrape and clean the caked raw cement powder on the surface of the filter disc. At the same time, under the action of the inclined plane, it can crush the caked powder on the surface of the filter disc. And when the crushing plate abuts against the surface of the protrusion, it can push the crushing plate to move towards the L-shaped plate, and at the same time, the second spring is compressed. When the crushing plate passes over the protrusion, the crushing plate can move back to its original position under the action of the second spring. Repeating like this, the crushing plate can move back and forth, which can not only make the crushing effect of the raw cement powder better, but also form a vibrating effect on the surface of the filter disc, avoid the adhesion of the raw cement powder, and then ensure the efficiency and effect of preheating.

[0009] On the basis of the above technical solution, the present invention can be further improved as follows.

[0010] Further, the moving mechanism includes a second moving plate, and the second moving plate is connected to the side wall of the working box through a sliding mechanism. An inclined groove is provided on the side wall of the second moving plate, 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 pushing rod is fixedly connected to the side wall of the moving rod. The pushing rod is inserted into the inclined groove, and a guiding mechanism is provided at the bottom of the first moving plate and the working box.

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

[0012] Further, the connecting mechanism includes a plurality of slots arranged in an array on the side wall of the first rotating shaft, and a plurality of insertion plates arranged in an array are fixedly connected to the end of the second rotating shaft. The insertion 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 further solution is that when the waste gas and the raw cement powder impact on the surface of the filter disc, it can push the filter disc to move towards the support plate. At the same time, it drives the second rotating shaft to move, so that the insertion plate can slide in the slot.

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

[0015] The beneficial effect of adopting the above further solution is that it can reset the filter disc and the second rotating shaft.

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

[0017] The beneficial effect of adopting the above further solution is that the driving pulley is driven to rotate by the power mechanism, so as to drive the driven pulley and the first rotating shaft to rotate through the belt, and further drive the second rotating shaft and the filter disc to rotate through the insertion plate.

[0018] Further, the power mechanism includes a rotating rod rotatably connected to the inner side wall of the fixed box. A plurality of blades arranged in an array are fixedly connected to the side wall of the rotating rod, and one end of the rotating rod is fixed to the end of the driving pulley.

[0019] The beneficial effect of adopting the above further solution is that when the waste gas enters the fixed box, it impacts on the surface of the blades, enabling the rotating rod to rotate. When the rotating rod rotates, it can drive the driving pulley to rotate.

[0020] Further, the crushing mechanism includes a crushing plate, and the crushing plate is connected to the side wall of the partition through a second reset mechanism. The crushing plate includes an inclined surface, and a plurality of protrusions arranged in an array are fixedly connected to the end of the filter disc.

[0021] The beneficial effect of adopting the above further solution is that under the action of the second reset mechanism, the crushing plate is always in contact with the end of the filter disc, so as to scrape and clean the caked cement raw material powder on the surface of the filter disc. At the same time, under the action of the inclined surface, the caked powder on the surface of the filter disc can be crushed. And when the crushing plate is in contact with the surface of the protrusion, it can push the crushing plate to move towards the direction close to the L-shaped plate. When the crushing plate passes over the protrusion, the crushing plate can move and reset under the action of the second reset mechanism. In this way, the crushing plate can move back and forth, which can not only make the crushing effect of the cement raw material powder better, but also form a vibration effect on the surface of the filter disc, avoiding the adhesion of the cement raw material powder, and further 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 working box, a slider is slidably connected to the guide rail, and the slider is fixed to the side wall of the second moving plate.

[0023] The beneficial effect of adopting the above further solution is that it plays a guiding and limiting role in 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 working box. A sliding block is sleeved on the side wall of the T-shaped guide rod, and the sliding block is fixed to the side wall of the first moving plate.

[0025] The beneficial effect of adopting the above further solution is that it plays a guiding and limiting role in 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 board. Two symmetrically arranged second sleeve rods are fixedly connected to the side wall of the L-shaped plate. A second sleeve is sleeved on the side wall of the second sleeve rod, and the other end of the second sleeve is fixed to the side wall of the crushing plate. A second spring is sleeved on the side wall of each second sleeve. A second telescopic cover is sleeved on the side wall of the second spring, and both ends of the second telescopic cover are fixed to the side wall of the L-shaped plate and the crushing plate respectively.

[0027] The beneficial effect of adopting the above further solution is that it plays a guiding and resetting role in the movement of the crushing plate. Moreover, under the action of the second spring, the crushing plate always abuts against the end of the filter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the use state of the present invention;

[0029] Figure 2 is a partial cross-sectional structural schematic diagram of the working box in the present invention;

[0030] Figure 3 is a cross-sectional structural schematic diagram of another perspective of the working box in the present invention;

[0031] Figure 4 is Figure 1 an enlarged structural schematic diagram at A in

[0032] Figure 5 is Figure 2 an enlarged structural schematic diagram at B in

[0033] Figure 6 is Figure 3 an enlarged structural schematic diagram at C in

[0034] Figure 7 is Figure 6 an enlarged structural schematic diagram at D in

[0035] Figure 8 For Figure 5 The enlarged structural schematic diagram at position E in the figure.

[0036] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0037] 1. The main body of the shaft preheater; 101. The cylinder body; 102. The discharge pipe; 201. The second moving plate; 202. The moving rod; 203. The chute; 204. The push rod; 301. The sliding block; 302. The T-shaped guide rod; 401. The guide rail; 402. The slider; 501. The slot; 502. The insertion plate; 601. The rotating ring; 602. The first spring; 603. The first telescopic cover; 701. The crushing plate; 702. The inclined surface; 703. The protrusion; 801. The L-shaped plate; 802. The second sleeve rod; 803. The second sleeve; 804. The second spring; 805. The second telescopic cover; 901. The driven pulley; 902. The driving pulley; 903. The belt; 1001. The rotating rod; 1002. The blade; 11. The rotary kiln; 1101. The exhaust pipe; 12. The fixed box; 13. The L-shaped pipe; 14. The working box; 15. The feeding valve; 16. The partition; 17. The round hole; 18. The filter disc; 19. The support plate; 20. The first rotating shaft; 21. The second rotating shaft; 22. The connecting pipe; 23. The through hole; 24. The air inlet pipe; 25. The first moving plate. Specific embodiments

[0038] The principles and features of the present invention will be described below with reference to the attached 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 production process of cement, it is necessary to use a rotary kiln to heat and sinter cement raw meal powder to form clinker. At the same time, during the production process of the rotary kiln, high-temperature flue gas will be generated. If directly discharged, it will cause waste of heat and is not energy-saving and environmentally friendly. Currently, a shaft preheater is usually used to preheat the cement raw meal powder with the heat of waste gas, and after preheating, separation is carried out. The separated cement raw meal powder then enters the rotary kiln for sintering. The thermal efficiency, separation efficiency, and temperature increase coefficient of the shaft preheater are all lower than those of the cyclone preheater. Because of its large space and higher adaptability to raw materials and fuels than the cyclone, it is selected by enterprises with high "harmful components" in raw materials and fuels. To make up for the deficiency of poor gas-solid separation ability, a cyclone preheater is connected in series at the upper part of the shaft to form a complete preheating system.

[0040] After in - depth investigation and research on the use process of the vertical pre - heater, the inventor found that: Publication No. CN1004299B discloses a vertical pre - heater system for cement raw meal powder. However, when the existing vertical pre - heater for cement raw meal powder is in use, it is not convenient to adjust the air inlet speed. If the air inlet speed is too large, it will cause an increase in energy consumption. If the air inlet speed is too small, it will affect the separation efficiency and effect, and further affect the pre - heating efficiency and effect of the cement raw meal powder. Therefore, the inventor proposed a vertical pre - heater for cement raw meal powder to solve the above problems.

[0041] The present invention provides the following preferred embodiments

[0042] As Figures 1 - 8 shown, a vertical pre - heater for cement raw meal powder includes a cylinder body 101 and a discharge pipe 102 provided on the vertical pre - heater body 1. Components such as the cylinder body 101 and the discharge pipe 102 on the vertical pre - heater body 1 are well - known technologies in the technical field and will not be elaborated here. An air inlet pipe group is fixedly inserted into the side wall of the cylinder body 101, and the air inlet pipe group includes a plurality of 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. The lower end of the L - shaped pipe 13 is fixedly connected to a fixed box 12, and a connecting pipe 22 is fixedly connected to the bottom of the fixed box 12. A partition 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 16, and a filter disk 18 is inserted into the round hole 17. A support plate 19 is fixedly connected to the bottom of the working box 14, and a first rotating shaft 20 is rotatably connected to the side wall of the support plate 19 through a driving mechanism. The end of the filter disk 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 close to the air inlet pipe 24 is connected to a first moving plate 25 through a moving mechanism, and a through - hole 23 is opened on the side wall of the first moving plate 25. A crushing mechanism for crushing the caked cement raw meal powder on the filter disk 18 is provided on the side wall of the partition 16. It can automatically adjust the air inlet pipes 24 with different diameters according to the wind speed, so as to ensure that the wind speed entering the cylinder body 101 is more uniform, avoid an increase in energy consumption caused by too large a wind speed, and at the same time, avoid too small a wind speed affecting the separation efficiency and effect. While ensuring the separation efficiency and effect, it reduces energy consumption, is more energy - saving and environmentally friendly, and further ensures the pre - heating efficiency and effect; it can automatically crush the caked cement raw meal powder to ensure the pre - heating efficiency and effect.

[0043] In this embodiment, as Figure 5 、 Figure 6As shown, the moving mechanism includes a second moving plate 201, and the second moving plate 201 is connected to the side wall of the working box 14 through a sliding mechanism. An inclined slot 203 is formed in the side wall of the second moving plate 201, 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 pushing rod 204 is fixedly connected to the side wall of the moving rod 202. The pushing rod 204 is inserted into the inclined slot 203, and a guiding mechanism is provided at the bottom of the first moving plate 25 and the working box 14. When the waste gas and cement raw material powder impact on the surface of the filter disc 18, it can push the filter disc 18 to move towards the support plate 19. When the second rotating shaft 21 moves, it can drive the pushing rod 204 to move upward along the inclined slot 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. Moreover, the greater the wind speed, the greater the moving stroke of the filter disc 18 and the second rotating shaft 21, and the greater the upward moving stroke of the first moving plate 25, so that the through hole 23 can be aligned with the air inlet pipe 24 with a larger diameter.

[0044] In this embodiment, as Figure 7 shown, the connecting mechanism includes a plurality of slots 501 arranged in an array on the side wall of the first rotating shaft 20, and a plurality of insertion plates 502 arranged in an array are fixedly connected to the end of the second rotating shaft 21. The insertion 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 waste gas and cement raw material powder impact on the surface of the filter disc 18, it can push the filter disc 18 to move towards the support plate 19. At the same time, it drives the second rotating shaft 21 to move, so that the insertion plates 502 can slide in the slots 501.

[0045] In this embodiment, as Figure 7 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 walls of the first rotating shaft 20 and the second rotating shaft 21, and the other end of the first spring 602 is fixedly connected 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 both ends of the first telescopic cover 603 are fixedly connected to the support plate 19 and the end of the filter disc 18 respectively, which can reset the filter disc 18 and the second rotating shaft 21.

[0046] In this embodiment, as Figures 5 - 7As shown, the driving mechanism includes a driven pulley 901 fixedly sleeved on the side wall of the first rotating shaft 20, and the side wall of the fixed box 12 is rotatably connected to a driving pulley 902 through a power mechanism, and a belt 903 is used to transmit the power between the driving pulley 902 and the driven pulley 901. The driving pulley 902 is driven to rotate by the power mechanism, 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 plug plate 502.

[0047] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the power mechanism includes a rotating rod 1001 rotatably connected to the inner wall of the fixed box 12, and the side wall of the rotating rod 1001 is fixedly connected with a plurality of blades 1002 arranged in an array, and one end of the rotating rod 1001 is fixed to the end of the driving pulley 902. When the exhaust gas enters the fixed box 12, it impacts the surface of the blade 1002, which can cause the rotating rod 1001 to rotate. When the rotating rod 1001 rotates, it can drive the driving pulley 902 to rotate.

[0048] In this embodiment, Figure 8 As shown, 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 protrusions 703 arranged in an array. Under the action of the second reset mechanism, the crushing plate 701 and the end of the filter disc 18 are always in contact with each other, so that the cement raw material powder agglomerated on the surface of the filter disc 18 can be scraped and cleaned. At the same time, under the action of the inclined surface 702, the powder agglomerated on the surface of the filter disc 18 can be crushed. The crushing plate 701 is crushed, and when the crushing plate 701 is against the surface of the protrusion 703, the crushing plate 701 can be pushed to move towards the direction close to the L-shaped plate 801. When the crushing plate 701 passes over the protrusion 703, the crushing plate 701 can move and reset under the action of the second reset mechanism, and so on. The crushing plate 701 can move back and forth, which can not only improve the crushing effect of the cement raw material powder, but also form a vibration effect on the surface of the filter disc 18 to avoid the adhesion of the cement raw material powder, thereby ensuring the efficiency and effect of preheating.

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

[0050] In this embodiment, Figure 5 and Figure 6As shown in the figure, the guiding mechanism includes two symmetrically arranged T-shaped guide rods 302 fixedly connected to the bottom of the working box 14. A sliding block 301 is sleeved on the side wall of the T-shaped guide rod 302, and the sliding block 301 is fixed to the side wall of the first moving plate 25, playing a guiding and limiting role in the movement of the first moving plate 25.

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

[0052] The specific usage steps of the present invention are as follows:

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

[0054] Moreover, the greater the wind speed, the greater the moving stroke of the filter disc 18 and the second rotating shaft 21, and the greater the upward moving stroke of the first moving plate 25, so that the through hole 23 can be aligned with the air inlet pipe 24 with a larger diameter. At this time, the wind speed entering the cylinder 101 can be reduced. On the contrary, when the wind speed is smaller, the moving stroke of the filter disc 18 and the second rotating shaft 21 becomes smaller, and the upward moving stroke of the first moving plate 25 becomes smaller, so that the through hole 23 can be aligned with the air inlet pipe 24 with a smaller diameter. At this time, the wind speed entering the cylinder 101 can be increased, so as to ensure that the wind speed entering the cylinder 101 is more uniform, avoid excessive wind speed causing increased energy consumption, and at the same time, avoid too small wind speed affecting the separation efficiency and effect, ensure the separation efficiency and effect while reducing energy consumption, be more energy-saving and environmentally friendly, and further ensure the preheating efficiency and effect;

[0055] Meanwhile, during preheating, when the waste gas enters the fixed box 12, it impacts on the surface of the blade 1002, which can cause the rotating rod 1001 to rotate. When the rotating rod 1001 rotates, it can drive the driving pulley 902 to rotate, and then drive the driven pulley 901 and the first rotating shaft 20 to rotate through the belt 903. Furthermore, the second rotating shaft 21 and the filter disc 18 are driven to rotate through the insertion plate 502. Under the action of the second spring 804, the crushing plate 701 always abuts against the end of the filter disc 18, so as to scrape and clean the caked cement raw material powder on the surface of the filter disc 18. At the same time, under the action of the inclined surface 702, the caked powder on the surface of the filter disc 18 can be crushed. And when the crushing plate 701 abuts against the surface of the protrusion 703, it can push the crushing plate 701 to move towards the L-shaped plate 801, and at the same time, the second spring 804 is compressed;

[0056] When the crushing plate 701 passes over the protrusion 703, the crushing plate 701 can move and reset under the action of the second spring 804. Repeating this process can make the crushing plate 701 move back and forth, which can not only make the crushing effect of the cement raw material powder better, but also form a vibration effect on the surface of the filter disc 18 to avoid the adhesion of the cement raw material powder, and further ensure the preheating efficiency and effect.

[0057] In summary, the beneficial effects of the present invention are specifically reflected in that it can automatically adjust the air inlet pipes 24 with different diameters according to the wind speed, so as to ensure that the wind speed entering the cylinder 101 is more uniform, avoid excessive wind speed causing increased energy consumption, and at the same time, avoid too small wind speed affecting the separation efficiency and effect, ensure the separation efficiency and effect while reducing energy consumption, be more energy-saving and environmentally friendly, and further ensure the preheating efficiency and effect; it can automatically crush the caked cement raw material powder to ensure the preheating efficiency and effect.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertical drum preheater for cement raw meal powder, comprising a drum (101) and a discharge pipe (102) arranged on a vertical drum preheater body (1), characterized in that: An air inlet pipe group is fixedly inserted into the side wall of the cylinder (101), and the air inlet pipe group includes a plurality of air inlet pipes (24); the side wall of the air inlet pipe (24) is fixedly connected to a working box (14), and the side wall of the working box (14) is fixedly connected to an L-shaped pipe (13); the lower end of the L-shaped pipe (13) is fixedly connected to a fixed box (12), and the bottom of the fixed box (12) is fixedly connected to a connecting pipe (22); a partition (16) is fixedly inserted into the working box (14), and a feed 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 (16), and a filter disc is inserted into the circular 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 driving 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) close to the air inlet pipe (24) is connected to a first movable plate (25) through a moving mechanism, and a through hole (23) is provided on the side wall of the first movable plate (25), and a crushing mechanism for crushing cement raw material powder agglomerated on the filter disc (18) is provided on the side wall of the partition (16).

2. A cement raw meal vertical drum preheater according to claim 1, characterized in that: The moving mechanism comprises a second moving plate (201), and the second moving plate (201) is connected to the side wall of the working box (14) through a sliding mechanism, the side wall of the second moving plate (201) is provided with an inclined groove (203), and a moving rod (202) is inserted into the side wall of the supporting plate (19), one end of the moving rod (202) is rotatably connected to the end of the second rotating shaft (21), and the side wall of the moving rod (202) is fixedly connected with a pushing rod (204), and the pushing rod (204) is inserted in the inclined groove (203), and a guiding mechanism is provided at the bottom of the first moving plate (25) and the working box (14).

3. A cement raw material powder vertical drum preheater according to claim 1, characterized in that: The connection mechanism comprises a plurality of slots (501) arranged in an array and opened on the side wall of the first rotating shaft (20), and a plurality of plug plates (502) arranged in an array are fixedly connected to the end of the second rotating shaft (21), the plug plates (502) are inserted into the slots (501), and a first reset mechanism is arranged between the first rotating shaft (20) and the second rotating shaft (21).

4. A cement raw material powder vertical drum preheater according to claim 3, characterized in that: The first reset mechanism comprises a rotating ring (601) rotatably connected to the side wall of the support plate (19), and the side wall of the rotating ring (601) is fixedly connected to a first spring (602), the first spring (602) is sleeved on the side walls 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), the side wall of the first spring (602) is sleeved with a first telescopic cover (603), and the two ends of the first telescopic cover (603) are respectively fixed to the end of the support plate (19) and the end of the filter disc (18).

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

6. A cement raw meal vertical drum preheater according to claim 5, characterized in that: The power mechanism comprises a rotating rod (1001) rotatably connected to the inner wall of the fixed box (12), a plurality of blades (1002) arranged in an array 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 driving pulley (902).

7. A vertical drum preheater for cement raw meal powder according to claim 1, characterized in that: The crushing mechanism comprises 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) comprises an inclined surface (702), and the end of the filter disc (18) is fixedly connected with a plurality of protrusions (703) arranged in an array.

8. A cement raw meal vertical drum preheater according to claim 2, characterized in that: The sliding mechanism comprises a guide rail (401) fixedly connected to the inner wall of the working box (14), a slider (402) being slidably connected to the guide rail (401), and the slider (402) being fixed to the side wall of the second movable plate (201).

9. A cement raw meal vertical drum preheater according to claim 2, characterized in that: The guide mechanism comprises two symmetrically arranged T-shaped guide rods (302) fixedly connected to the bottom of the working box (14), the side walls of the T-shaped guide rods (302) are sleeved with sliding blocks (301), and the sliding blocks (301) are fixed to the side walls of the first movable plate (25).

10. The vertical drum preheater for cement raw meal powder according to claim 1, characterized in that: The second reset mechanism comprises an L-shaped plate (801) fixedly connected to the side wall of the partition (16), and the side wall of the L-shaped plate (801) is fixedly connected to two symmetrically arranged second sleeve rods (802), the side wall of the second sleeve rod (802) is sleeved 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 sleeved with a second spring (804), the side wall of the second spring (804) is sleeved with a second telescopic cover (805), and the two ends of the second telescopic cover (805) are respectively fixed to the side wall of the L-shaped plate (801) and the crushing plate (701).

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