Raw material drying device and process for active lime production

Abstract

The invention discloses a raw material drying device and process for active lime production, and relates to the technical field of limestone processing.The raw material drying device comprises a drying body, one end of the top of the drying body is connected with a feeding pipe, and the bottom of the inner wall of the drying body is connected with a heat insulation bin; the center of the bottom of the outer wall of the drying body is connected with an air heater, and the sieve plates are arranged on the inner wall of the rotating shaft frame, and along with rotation of the rotating shaft frame, stone moves towards the supporting plates arranged between the sieve plates; in this way, the multiple leakage grooves formed in the top of the sieve plate and the top of the supporting plate are used for distinguishing chippings and powder in the limestone raw materials from large limestone blocks, and the problem that in the using process of a traditional raw material drying device for active lime production, powder fragments are doped in the limestone raw materials, so that the limestone raw materials cannot be dried easily when the limestone raw materials are dried is further solved. The limestone powder is easily overheated, so that overheated lime is generated, and the subsequent reaction process is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of limestone processing, and particularly relates to a raw material drying device and process for active lime production. Background Art

[0002] Limestone mainly consists of calcium carbonate. Lime and limestone are widely used as raw materials in building materials and industry. Limestone can be directly processed into stone materials and burned into quicklime. Quicklime becomes slaked lime when it absorbs moisture or is added with water. The main component of slaked lime is calcium hydroxide. Slaked lime is prepared into lime slurry, lime paste, etc. and used as coating materials and brick and tile adhesives. During the limestone processing, the water screening process mainly involves filtration and purification in the limestone process, and its main function is to reduce the impurities and sand on the surface of limestone to ensure the purity of limestone.

[0003] The following problems exist in the prior art: 1. During the use of the existing raw material drying device for active lime production, since there are fragments mixed in the limestone raw material powder, when drying the limestone raw material, it is easy to overheat the limestone powder, thereby generating overburned lime, which affects the subsequent reaction process; 2. During the use of the existing raw material drying device for active lime production, since the limestone fragments are stacked on each other, it is difficult for the high-temperature hot air to flow between the limestone fragments, which not only causes uneven heating of the limestone fragments, but also easily causes problems of overburning on the outer layer and underburning on the inner layer of the limestone fragments; 3. During the use of the existing raw material drying device for active lime production, since the limestone powder is unevenly stirred during drying, it is easy to cause overheating of the limestone powder, resulting in the problem of generating overburned lime. Summary of the Invention

[0004] The present invention provides a raw material drying device and process for active lime production to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A raw material drying device for active lime production, including a drying main body. A blocking block is provided at the bottom on one side of the drying main body. A feed pipe is fixedly connected to the top of the drying main body. A heat insulation chamber is connected to the bottom of the inner wall of the drying main body. A hot air blower is connected to the center of the bottom of the outer wall of the drying main body, and the output end of the hot air blower is fixedly connected to an arc-shaped air duct. The arc-shaped air duct is communicated with the heat insulation chamber, and a ventilation filter screen is connected to one side of the inner wall of the arc-shaped air duct; A fixing frame is connected to the top of the drying main body, and a chute is formed on one side of the inner wall of the fixing frame. A rotating shaft frame is rotatably connected inside the chute. The bottom of the rotating shaft frame is rotatably connected to the top of the heat insulation bin, and a screening mechanism is arranged inside the wall of the rotating shaft frame; The screening mechanism includes a plurality of exhaust air boxes fixedly connected to the inner wall of the rotating shaft frame. A sieve plate is fixedly connected to the outer wall of each exhaust air box. One ends of a plurality of sieve plates are fixedly connected to the inner wall of the rotating shaft frame. A limiting pipe is fixedly connected to the ends of the plurality of sieve plates away from the rotating shaft frame. A plurality of support plates are fixedly connected to the outer wall of the limiting pipe. Each support plate is located between two adjacent sieve plates. The sieve plates and the support plates are both inclined. A plurality of leakage grooves are formed on the top of each support plate. A plurality of protrusions are fixedly connected to the top of each support plate. Each protrusion is located on one side of a leakage groove. A plurality of turning frames are rotatably connected to each support plate. Each turning frame is lapped on a protrusion.

[0006] A further improvement of the technical solution of the present invention is that: a plurality of electric telescopic rods are circumferentially arranged on the outer side of the heat insulation bin. A plurality of electric telescopic rods are connected to the inner wall of the bottom of the drying main body. The output end of each electric telescopic rod is fixedly connected with a connecting frame. One end of each connecting frame penetrates through the heat insulation bin and extends to the inside of the heat insulation bin. The ends of a plurality of connecting frames are fixedly connected with a heat insulation plate. The inner bottom end of the heat insulation plate is rotatably connected with a support disk with a hollow structure. The inner diameter end of the support disk is slidably connected with the outer wall of the limiting pipe.

[0007] A further improvement of the technical solution of the present invention is that: a plurality of elastic support columns are fixedly connected to the top of the support disk. The top of the elastic support column is fixedly connected with a push plate. The push plate is located below the turning frame.

[0008] A further improvement of the technical solution of the present invention is that: a sieve pipe is slidably connected to the inner wall of the limiting pipe. A plurality of extension frames are fixedly connected to the bottom of the sieve pipe. A plurality of limiting grooves are formed on the outer wall of the limiting pipe. The inner wall of the limiting groove is slidably connected with the outer wall of the extension frame. The bottom of the extension frame is fixedly connected with the top of the support disk.

[0009] A further improvement of the technical solution of the present invention is that: a fixing ring is sleeved on the bottom of the limiting pipe. A plurality of fixing plates are rotatably connected to the outer wall of the fixing ring. One side of the fixing plate is rotatably connected with a turning comb. A buffer pressing plate is installed on one side of the turning comb.

[0010] A further improvement of the technical solution of the present invention is that: a motor is fixedly connected to one side of the drying main body. The output end of the motor is fixedly connected with a transmission gear. The top of the transmission gear is rotatably connected with the outer wall of the drying main body.

[0011] A further improvement of the technical solution of the present invention lies in that: a linkage gear rod is engaged on one side of the transmission gear, and the upper and lower ends of the linkage gear rod are rotatably connected to the inner wall of the drying main body, and one side of the outer wall of the linkage gear rod is engaged with the outer wall of the rotating shaft frame.

[0012] A further improvement of the technical solution of the present invention lies in that: a flow guide is fixedly connected to one side of the outer wall of the hot air blower, and an air delivery pipe is fixedly connected to the output end of the flow guide. One end of the air delivery pipe is fixedly connected to a rotary joint, and one end of the rotary joint is connected to a shunt. A plurality of output ends at the top of the shunt are respectively fixedly connected to the bottom of the exhaust air box.

[0013] A raw material drying process for active lime production, which adopts the above-mentioned raw material drying device for active lime production, and the process is as follows: S1: Feed the limestone raw material into the heat insulation bin through the feed pipe. During this process, use the screening mechanism to screen the lime stones and limestone powders. The screening mechanism drives the rotating shaft frame to rotate through the motor, so that the limestone powder falls into the heat insulation bin along the leakage grooves provided at the top of the sieve plate and the support plate, and use the turning frame to limit the lime stones. S2: Sleeve a fixing ring on the outside of the limiting pipe, and set a plurality of fixing plates on the outside of the fixing ring. Use the turning comb and the buffer pressing plate provided on one side of the fixing plate to turn the limestone powder to increase the heat receiving area of the limestone powder. S3: Start the hot air blower to heat and dry the lime stones and limestone powders.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention provides a raw material drying device and process for active lime production. By setting a sieve plate inside the rotating shaft frame, as the rotating shaft frame rotates, the stones move towards the support plate provided between two adjacent sieve plates, so as to use a plurality of leakage grooves opened at the top of the sieve plate and the support plate to distinguish the powder and large limestone fragments in the limestone raw material; further solve the problem that in the traditional raw material drying device for active lime production, during use, due to the presence of fragments in the limestone raw material powder, when drying the limestone raw material, it is easy to overheat the limestone powder, thus generating overburned lime and affecting the subsequent reaction process.

[0015] 2. The present invention provides a raw material drying device and process for active lime production. By setting a support plate at the bottom of the heat insulation plate and several elastic support columns at the top of the support plate, when the electric telescopic rod is activated, the turning frame is pushed to rotate by using the push plate set at the top of the elastic support column, so that the turning frame is separated from the protrusion, and the turning frame pushes the limestone fragments placed on its surface, creating gaps between the limestone fragments to facilitate the circulation of high-temperature hot air. Further, it solves the problem that in the traditional raw material drying device for active lime production during use, due to the mutual accumulation of limestone fragments, it is difficult for high-temperature hot air to circulate between the limestone fragments, resulting in uneven heating of the limestone fragments and easily causing overburning of the outer layer and underburning of the inner layer of the limestone fragments.

[0016] 3. The present invention provides a raw material drying device and process for active lime production. By sleeving a fixing ring at the bottom of the limiting tube and setting several fixing plates on the outer side of the fixing ring, when the motor drives the rotating shaft frame to rotate, the limiting tube is driven to rotate by using the rotating shaft frame, so that the fixing ring drives the turning comb set on one side of the fixing plate to rotate at the bottom of the heat insulation bin. The turning comb is used to stir the limestone powder at the bottom of the heat insulation bin. By setting a buffer pressing plate on one side of the turning comb, the intermittently pressed limestone powder after turning is pressed by using the buffer pressing plate, making the surface of the limestone powder wavy, thereby increasing the heat absorption area of the limestone powder and accelerating the drying of the limestone powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic back view of the present invention; Figure 3 is a bottom sectional view of the heat insulation bin of the present invention; Figure 4 is a schematic internal structure diagram of the drying main body of the present invention; Figure 5 is a front sectional view of the present invention; Figure 6 is a top sectional view of the rotating shaft frame of the present invention; Figure 7 is a schematic internal structure diagram of the heat insulation bin of the present invention; Figure 8 is a schematic structural diagram of the support plate of the present invention; Figure 9 of the present invention Figure 5 is an enlarged schematic view of part A; Figure 10 is a schematic installation structure diagram of the rotary joint and the diverter in the present invention; Figure 11 of the present invention Figure 5 is an enlarged schematic view of part B; Figure 12 For the Figure 5 magnified schematic view at position C in the present invention.

[0018] In the figure: 1, drying main body; 2, feed pipe; 3, heat insulation bin; 4, hot air blower; 5, arc-shaped air duct; 6, ventilation filter screen; 7, fixing frame; 8, sliding groove; 9, rotating shaft frame; 10, exhaust air box; 11, sieve plate; 12, limiting pipe; 13, support plate; 14, leakage groove; 15, protrusion; 16, turning frame; 17, electric telescopic rod; 18, connecting frame; 19, heat insulation plate; 20, support disc; 21, elastic support column; 22, push plate; 22-1, clamping groove; 23, sieve pipe; 24, extension frame; 25, limiting groove; 26, fixing ring; 27, fixing plate; 28, turning comb; 29, buffer pressing plate; 30, motor; 31, transmission gear; 32, linkage gear rod; 33, flow guide device; 34, air duct; 35, rotary joint; 36, diverter. Specific embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] As Figures 1 to 12 shown, a raw material drying device for active lime production according to an embodiment of the present invention includes a drying main body 1. A blocking block is provided at the bottom of one side of the drying main body 1. A feed pipe 2 is fixedly connected to the top of the drying main body 1. A heat insulation bin 3 is fixedly connected to the bottom of the inner wall of the drying main body 1. A hot air blower 4 is fixedly connected to the center of the bottom of the outer wall of the drying main body 1. The output end of the hot air blower 4 is fixedly connected to an arc-shaped air duct 5. The arc-shaped air duct 5 is communicated with the heat insulation bin 3. A ventilation filter screen 6 is fixedly connected to one side of the inner wall of the arc-shaped air duct 5. A fixing frame 7 is connected to the top of the drying main body 1. A sliding groove 8 is opened on one side of the fixing frame 7. A rotating shaft frame 9 is rotatably connected to the inside of the sliding groove 8. The bottom of the rotating shaft frame 9 is rotatably connected to the top of the heat insulation bin 3. A screening mechanism is provided inside the rotating shaft frame 9.

[0021] During operation, limestone raw materials are fed into the heat insulation bin 3 arranged inside the drying main body 1 through the feed pipe 2 arranged at the top of the drying main body 1. During this process, a fixing frame 7 is arranged at the top of the drying main body 1, and a chute 8 is arranged on one side of the inner wall of the fixing frame 7. The chute 8 is used to limit the rotation shaft frame 9. The screening mechanism inside the rotation shaft frame 9 is used to distinguish the powder and large limestone fragments in the limestone raw materials; the hot air blower 4 arranged at the center of the bottom of the outer wall of the drying main body 1 is started, so that the hot air blower 4 sends high-temperature hot air into the heat insulation bin 3 through the arc-shaped air duct 5 arranged at the output end, and heats the limestone powder accumulated at the bottom of the heat insulation bin 3. By arranging a ventilation filter screen 6 on one side of the inner wall of the arc-shaped air duct 5, it is avoided that limestone powder enters the arc-shaped air duct 5 and causes blockage at the output end of the hot air blower 4; when the limestone raw materials are dried, the plugging block arranged at the bottom of one side of the drying main body 1 is pulled to shovel out the limestone raw materials from the heat insulation bin 3, solving the problem that in the process of using the traditional raw material drying device for active lime production, due to the mixture of fragments in the limestone raw material powder, when drying the limestone raw materials, it is easy to cause excessive heating of the limestone powder, thereby generating over-burnt lime and affecting the subsequent reaction process.

[0022] In this embodiment, as Figures 4 - 9 shown, the screening mechanism includes a number of exhaust boxes 10 fixedly connected to the inner wall of the rotation shaft frame 9, and a sieve plate 11 is fixedly connected to the outer wall of each exhaust box 10. One ends of a number of sieve plates 11 are fixedly connected to the inner wall of the rotation shaft frame 9, and the other ends of the number of sieve plates 11 are commonly connected to a limiting pipe 12. A number of support plates 13 are fixedly connected to the outer wall of the limiting pipe 12. Each support plate 13 is located between two adjacent sieve plates 11. The sieve plates 11 and the support plates 13 are both inclined. A number of leakage grooves 14 are formed at the top of each support plate 13. A number of protrusions 15 are fixedly connected to the top of each support plate 13. Each protrusion 15 is arranged on one side of a leakage groove 14. A number of turning frames 16 are rotatably connected to the outer wall of the support plate 13. Each turning frame 16 is lapped on a protrusion 15; a number of electric telescopic rods 17 are connected to the outside of the heat insulation bin 3. The number of electric telescopic rods 17 are all arranged at the bottom of the inner wall of the drying main body 1, and the output end of each electric telescopic rod 17 is fixedly connected to a connecting frame 18. One end of each connecting frame 18 penetrates through the heat insulation bin 3 and extends into the heat insulation bin 3. The ends of the number of connecting frames 18 are commonly fixedly connected to a heat insulation plate 19. The inner bottom end of the heat insulation plate 19 is rotatably connected to a support disk 20 with a hollow structure, and the inner diameter end of the support disk 20 is slidably connected to the outer wall of the limiting pipe 12; a number of elastic support columns 21 are fixedly connected to the top of the support disk 20, and a push plate 22 is fixedly connected to the top of each elastic support column 21. A clamping groove 22-1 is arranged on each push plate 22. Each push plate 22 is located below a turning frame 16.

[0023] Specifically, as Figure 2 , Figure 4 shown, on one side of the outer wall of the drying main body 1, a motor 30 is fixedly connected, and the output end of the motor 30 is connected with a transmission gear 31. The top of the transmission gear 31 is rotationally connected to the outer wall of the drying main body 1. One side of the transmission gear 31 is meshed with a linkage gear rod 32, and the upper and lower ends of the linkage gear rod 32 are rotationally connected to the inner wall of the drying main body 1. One side of the linkage gear rod 32 is meshed with the outer wall of the rotating shaft frame 9.

[0024] During operation, through a number of exhaust boxes 10 and a number of sieve plates 11 arranged inside the rotating shaft frame 9, all the limestone raw material powders and fragments entering the heat insulation chamber 3 fall on the surface of the sieve plate 11. Start the motor 30 arranged outside the drying main body 1, so that the motor 30 drives the transmission gear 31 arranged at its output end to rotate, and use the transmission gear 31 to drive the linkage gear rod 32 meshed with it, so that the linkage gear rod 32 drives the rotating shaft frame 9 to rotate in the sliding groove 8, so that the limestone fragments accumulate on the support plate 13 arranged between the sieve plates 11 along the sieve plate 11. During this process, as the limestone raw material rolls, the limestone powder falls into the bottom of the heat insulation chamber 3 along a number of leakage grooves 14 arranged at the top of the support plate 13 and the sieve plate 11, which is convenient for the layered heating of the limestone fragments and the limestone powder. By arranging a turning frame 16 on the outer wall of the support plate 13, the limestone blocks are piled up on the top of the turning frame 16. By arranging a number of protrusions 15 on one side of the support plate 13 close to the leakage grooves 14 at the top, the limestone blocks falling between the turning frames 16 are limited by the protrusions 15 to prevent the limestone blocks from being embedded in the turning frame 16.

[0025] In addition, by arranging a plurality of electric telescopic rods 17 on one side of the bottom of the inner wall of the drying main body 1 close to the heat insulation bin 3, and arranging a connecting frame 18 at the output end of the electric telescopic rod 17, and arranging a heat insulation plate 19 at one end of the connecting frame 18, it is avoided that the high-temperature hot air in the heat insulation bin 3 leaks rapidly along the gaps on the heat insulation bin 3. By arranging a support plate 20 inside the heat insulation plate 19 and arranging a plurality of elastic support columns 21 on the top of the support plate 20, when the electric telescopic rod 17 extends, the electric telescopic rod 17 pushes the connecting frame 18 to move, the connecting frame 18 drives the heat insulation plate 19 and the support plate 20 to move, the support plate 20 pushes the push plate 22 to move through the elastic support columns 21, and the push plate 22 moves upward to abut against the turning frame 16, so that the bottom of the turning frame 16 is clamped inside the clamping groove 22-1. At this time, the electric telescopic rod 17 continues to push the support plate 20, the elastic support columns 21 and the push plate 22 to move upward, and the push plate 22 pushes the turning frame 16 to rotate through the clamping groove 22-1. When the turning frame 16 rotates, it separates from the protruding block 15, realizing the opening of the turning frame 16, and the turning frame 16 pushes the limestone fragments placed on its surface, so that gaps are generated between the limestone fragments, facilitating the circulation of high-temperature hot air; it solves the problem that in the traditional raw material drying device for active lime production, due to the mutual accumulation of lime stones, it is difficult for high-temperature hot air to circulate between the lime stones, which not only causes uneven heating of the lime stones, but also easily causes overburning of the outer layer and underburning of the inner layer.

[0026] In this embodiment, as Figure 5 、 Figure 11 shown, a sieve tube 23 is slidably connected to the inner wall of the limiting tube 12, and a plurality of extending frames 24 are fixedly connected to the bottom of the sieve tube 23. A plurality of limiting grooves 25 are formed in the outer wall of the limiting tube 12, and the inner wall of the limiting groove 25 is slidably connected to the outer wall of the extending frame 24, and the bottom of the extending frame 24 is fixedly connected to the top of the support plate 20.

[0027] During operation, the sieve tube 23 is arranged on the inner wall of the limiting tube 12, and the limestone fragments are blocked by the sieve tube 23 to ensure that the limestone fragments will not fall into the bottom of the heat insulation bin 3 through the limiting tube 12. The sieve tube 23 is connected to the support plate 20 through the extending frame 24, and the extending frame 24 is slidably connected to the limiting groove 25 arranged on the outer wall of the limiting tube 12, so that the sieve tube 23 can slide up and down in the limiting tube 12; when the lime stones are dried, the electric telescopic rod 17 is started again to extend, so that it pushes the support plate 20 to rise further through the connecting frame 18 and the heat insulation plate 19. At this time, the elastic support columns 21 contract due to the obstruction of the turning frame 16 and the push plate 22, and the support plate 20 pushes the sieve tube 23 to rise through the extending frame 24, so that the sieve tube 23 is separated from the limiting tube 12, and the limestone fragments accumulated on the surfaces of the sieve plates 11 and the support plates 13, which are all inclined, fall into the bottom of the heat insulation bin 3 along the gaps between the extending frames 24 through the limiting tube 12.

[0028] In this embodiment, as Figure 2 , Figure 5 and Figure 7 shown, a fixing ring 26 is sleeved at the bottom of the limiting pipe 12, and a plurality of fixing plates 27 are rotatably connected to the outer wall of the fixing ring 26. One side of each fixing plate 27 is rotatably connected to a turning comb 28, and a buffer pressing plate 29 is installed on one side of each turning comb 28.

[0029] During operation, by sleeving the fixing ring 26 at the bottom of the limiting pipe 12 and arranging a plurality of fixing plates 27 on the outer wall of the fixing ring 26, when the motor 30 drives the rotating shaft frame 9 to rotate, the rotating shaft frame 9 drives the limiting pipe 12 to rotate through the exhaust air box 10 and the sieve plate 11. While the limiting rod 12 rotates, it drives the sieve pipe 23 to rotate. The sieve pipe 23 drives the support disk 20 to rotate inside the heat insulation plate 19 through the extension frame 24. By driving the limiting pipe 12 to rotate through the rotating shaft frame 9, the fixing ring 26 drives the turning comb 28 arranged on one side of the fixing plate 27 to rotate at the bottom of the heat insulation bin 3, and the turning comb 28 is used to stir the limestone powder at the bottom of the heat insulation bin 3. By arranging the buffer pressing plate 29 on one side of the turning comb 28, the buffer pressing plate 29 is used to intermittently press down the turned limestone powder, so that the surface of the limestone powder presents a wavy shape, thereby increasing the heat receiving area of the limestone powder and accelerating the drying of the limestone powder.

[0030] In this embodiment, as Figure 4 , Figure 5 , Figure 9 and Figure 10 shown, a flow guide device 33 is fixedly connected to one side of the outer wall of the hot air blower 4, and an air delivery pipe 34 is fixedly connected to the output end of the flow guide device 33. One end of the air delivery pipe 34 is fixedly connected to a rotary joint 35, and one end of the rotary joint 35 is connected to a flow divider 36. A plurality of output ends at the top of the flow divider 36 are respectively fixedly connected to the bottom of an exhaust air box 10.

[0031] During operation, by arranging the flow guide device 33 on one side of the outer wall of the hot air blower 4, the flow guide device 33 is used to send the high-temperature hot air in the hot air blower 4 into the air delivery pipe 34 arranged at its output end. By arranging the rotary joint 35 at one end of the air delivery pipe 34, the high-temperature hot air enters the flow divider 36 through the rotary joint 35. The high-temperature hot air in the flow divider 36 enters a plurality of exhaust air boxes 10 arranged inside the rotating shaft frame 9, and the exhaust air boxes 10 are used to uniformly heat the lime stones piled on the surfaces of the sieve plate 11 and the support plate 13. At the same time, since the rotary joint 35 is rotatably connected to the flow divider 36, it does not affect the exhaust air box 10 to drive the flow divider 36 to rotate.

[0032] A raw material drying process for active lime production adopts the above-mentioned raw material drying device for active lime production, and the process is as follows: S1: Feed the limestone raw materials into the heat insulation bin 3 through the feed pipe 2. Use the screening mechanism to screen the lime stones and limestone powders. The screening mechanism drives the rotating shaft frame 9 to rotate through the motor 30, so that the limestone powders fall into the heat insulation bin 3 along the leakage grooves 14 arranged at the top of the sieve plate 11 and the support plate 13, and use the turning frame 16 to limit the lime stones. S2: Sheath the fixed ring 26 outside the limiting pipe 12, and set a number of fixing plates 27 on the outside of the fixed ring 26. Use the turning comb 28 and the buffer pressing plate 29 arranged on one side of the fixing plate 27 to turn the limestone powders and increase the heat receiving area of the limestone powders. S3: Start the hot air blower 4 to heat and dry the lime stones and limestone powders.

[0033] Next, specifically describe the working principle of the raw material drying device and process for producing activated lime.

[0034] As Figures 1 - 11 shown, feed the limestone raw materials into the heat insulation bin 3 arranged at the bottom of the inner wall of the drying main body 1 through the feed pipe 2 at the top of the drying main body 1. Set the fixed frame 7 at the top of the inner wall of the drying main body 1 and open the sliding groove 8 on the fixed frame 7. Use the sliding groove 8 to limit the rotating shaft frame 9. At this time, start the motor 30 arranged on one side of the outer wall of the drying main body 1, so that the motor 30 drives the transmission gear 31 arranged at the output end, and drives the rotating shaft frame 9 to rotate through the transmission gear 31 and the linkage gear rod 32, so that the limestone raw materials entering the heat insulation bin 3 evenly fall into the sieve plate 11 arranged in the rotating shaft frame 9. Along with the rotation of the rotating shaft frame 9, the limestone raw materials move towards the support plate 13 arranged between the sieve plates 11, so as to distinguish the fragments and powders in the limestone raw materials through a number of leakage grooves 14 opened at the top of the support plate 13 and the sieve plate 11. At this time, start the hot air blower 4 arranged at the center of the bottom of the outer wall of the drying main body 1, so that the hot air blower 4 sends the high-temperature hot air into the heat insulation bin 3 through the arc-shaped air duct 5 arranged at the output end to heat the limestone powders and fragments accumulated at the bottom of the heat insulation bin 3. Set the ventilation filter screen 6 on one side of the inner wall of the arc-shaped air duct 5 to prevent the limestone powders and fragments from entering the arc-shaped air duct 5 and causing blockage of the output end of the hot air blower 4. While heating the limestone powder in the heat insulation bin 3 with high-temperature hot air, part of the high-temperature hot air is sent into the shunt 36 through the air duct 34 arranged at the output end of the flow guide 33 on one side of the outer wall of the hot air blower 4 by using the flow guide 33 arranged on the outer wall of the hot air blower 4, and the high-temperature hot air in the shunt 36 enters several exhaust air boxes 10 arranged on the inner wall of the rotating shaft frame 9, and the exhaust air boxes 10 are used to uniformly heat the lime stones accumulated on the surface of the sieve plate 11 and the support plate 13. After the limestone raw materials are dried, the plugging block arranged at the bottom on one side of the drying main body 1 is pulled to shovel out the limestone raw materials from the heat insulation bin 3, which solves the problem that in the use process of the traditional raw material drying device for active lime production, due to the fragments doped in the limestone raw material powder, when drying the limestone raw materials, the limestone powder is easily overheated, thus generating overburned lime and affecting the subsequent reaction process.

[0035] The above has generally described the present invention in detail, but based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. A raw material drying device for active lime production, including a drying main body, and a blocking block is arranged at the bottom of one side of the drying main body, and it is characterized in that: A feed pipe is fixedly connected to the top of the drying main body. A heat insulation bin is connected to the bottom of the inner wall of the drying main body. The center of the bottom of the outer wall of the drying main body is connected with a hot air blower, and the output end of the hot air blower is connected with an arc-shaped air duct. The arc-shaped air duct is communicated with the heat insulation bin, and a ventilation filter screen is connected to one side of the inner wall of the arc-shaped air duct; A fixing frame is connected to the top of the drying main body. A chute is opened on one side of the inner wall of the fixing frame. A rotating shaft frame is rotatably connected inside the chute. The bottom of the rotating shaft frame is rotatably connected to the top of the heat insulation bin, and a screening mechanism is arranged inside the rotating shaft frame; The screening mechanism includes a plurality of exhaust boxes fixedly connected to the inner wall of the rotating shaft frame. A sieve plate is fixedly connected to the outer wall of each exhaust box. One ends of the plurality of sieve plates are fixedly connected to the inner wall of the rotating shaft frame. A limiting pipe is fixedly connected to the ends of the plurality of sieve plates away from the rotating shaft frame. A plurality of support plates are fixedly connected to the outer wall of the limiting pipe. Each support plate is located between two adjacent sieve plates. The sieve plates and the support plates are both inclined. A plurality of leakage grooves are opened on the top of each support plate. A plurality of protrusions are fixedly connected to the top of each support plate. Each protrusion is located on one side of a leakage groove. A plurality of turning frames are rotatably connected to each support plate. Each turning frame is lapped on a protrusion.

2. The raw material drying device for active lime production according to claim 1, wherein: A plurality of electric telescopic rods are circumferentially arranged on the outer side of the heat insulation bin. The plurality of electric telescopic rods are all connected to the bottom inner wall of the drying main body. The output end of each electric telescopic rod is fixedly connected with a connecting frame. One end of each connecting frame penetrates through the heat insulation bin and extends to the inside of the heat insulation bin. The ends of the plurality of connecting frames are jointly fixedly connected with a heat insulation plate. The bottom end inside the heat insulation plate is rotatably connected with a support disk with a hollow structure. The inner diameter end of the support disk is slidably connected to the outer wall of the limiting pipe.

3. The raw material drying device for activated lime production according to claim 2, wherein: A plurality of elastic support columns are fixedly connected to the top of the support disk. The top of the elastic support column is fixedly connected with a push plate. The push plate is located below the turning frame.

4. The raw material drying device for the production of active lime according to claim 3, characterized in that: A sieve tube is slidably connected to the inner wall of the limiting pipe. A plurality of extension frames are fixedly connected to the bottom of the sieve tube. A plurality of limiting grooves are opened on the outer wall of the limiting pipe. The inner wall of the limiting groove is slidably connected to the outer wall of the extension frame. The bottom of the extension frame is fixedly connected to the top of the support disk.

5. The raw material drying device for active lime production according to claim 4, characterized in that: A fixing ring is sleeved on the bottom of the limiting pipe. A plurality of fixing plates are rotatably connected to the outer wall of the fixing ring. A turning comb is rotatably connected to one side of the fixing plate. A buffer pressing plate is installed on one side of the turning comb.

6. The raw material drying device for active lime production according to claim 5, characterized in that: A motor is fixedly connected to one side of the drying main body. The output end of the motor is fixedly connected with a transmission gear. The top of the transmission gear is rotatably connected to the outer wall of the drying main body.

7. The raw material drying device for active lime production according to claim 6, characterized in that: A linkage gear rod is meshed with one side of the transmission gear. The upper and lower ends of the linkage gear rod are rotatably connected to the inner wall of the drying main body. One side of the outer wall of the linkage gear rod is meshed with the outer wall of the rotating shaft frame.

8. The raw material drying device for active lime production according to claim 7, characterized in that: One side of the outer wall of the hot air blower is fixedly connected with a flow guide device, and the output end of the flow guide device is fixedly connected with an air delivery pipe. One end of the air delivery pipe is fixedly connected with a rotary joint, and one end of the rotary joint is connected with a flow divider. A plurality of output ends at the top of the flow divider are respectively fixedly connected with the bottom of the exhaust air box.

9. A raw material drying process for active lime production, which uses the raw material drying device for active lime production described in claim 8 above, and is characterized in that: The process is as follows: S1: Feed the limestone raw material into the heat insulation bin through the feed pipe. Use the screening mechanism to screen the lime stones and limestone powders. The screening mechanism drives the rotating shaft frame to rotate through the motor, so that the limestone powders fall into the heat insulation bin along the leakage grooves arranged at the top of the sieve plate and the support plate, and use the turning frame to limit the lime stones. S2: Sleeve a fixing ring outside the limiting pipe, and arrange a plurality of fixing plates on the outer side of the fixing ring. Use the turning comb and the buffer pressing plate arranged on one side of the fixing plate to turn the limestone powders to increase the heat receiving area of the limestone powders. S3: Start the hot air blower to heat and dry the lime stones and limestone powders.

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