Energy-saving and environment-friendly automatic lime dense furnace

Abstract

The invention discloses an energy-saving and environment-friendly automatic lime dense furnace, and particularly relates to the technical field of lime dense furnaces, the energy-saving and environment-friendly automatic lime dense furnace comprises a base, a heating decomposition assembly is arranged on the base, the heating decomposition assembly comprises a perlite thermal insulation disc arranged at the top of an inner cavity of the base, and a rotary disc is arranged at the top of the perlite thermal insulation disc; and a furnace body is mounted at the top of the rotary table through bolts. The combustion pipe and the heat conduction cylinder can be heated to generate high temperature, then limestone in the furnace body is heated and decomposed into quick lime and carbon dioxide, the large limestone is crushed and stirred when the heat conduction rod rotates, heat can be easily and effectively transferred into the limestone, the calcination time is shortened, heat permeation can be accelerated, and the service life of the limestone is prolonged. And the combustion tube and the heat conduction cylinder can swing up and down in the furnace body due to the friction force of the turntable and the limestone, so that the heating and decomposing effects of the limestone are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lime kilns, and more specifically, the present invention relates to an energy-saving, environmental protection and automated lime kiln. Background Art

[0002] A lime kiln is an industrial device specifically used for high-temperature calcination of limestone, which produces quicklime and carbon dioxide through a decomposition reaction. It is the core equipment in the lime industrial production and is widely used in fields such as building materials, metallurgy, and chemical industry. Limestone decomposes at high temperatures, and this process requires continuous external fuel (such as coal, natural gas) for heating. However, it is not the lime itself that burns, but the limestone is decomposed through high temperatures.

[0003] Among them, the patent with publication number CN212269892U discloses a new type of environmental protection lime kiln, which includes an enclosed panel house, a fuel supply system, a kiln body, a feeding bin, a chain plate discharging machine, a finished product elevator, a finished product bin, an induced draft fan, a desulfurization tower, and an electric precipitator. The lower half of the fuel supply system, the kiln body, the feeding bin, the chain plate discharging machine, and the finished product elevator are all arranged in the enclosed panel house. The feeding bin is located above the kiln body, the chain plate discharging machine is located below the kiln body, and several combustion chambers are arranged in the kiln body; When this structure is in use, the high temperature generated by the fuel is transferred to the limestone through the silicon carbide heat conduction plate. When the temperature reaches the high temperature for limestone decomposition, the limestone decomposes. However, when the limestone burns and decomposes, it is stacked together, so that the high-temperature heat cannot penetrate deep into the limestone, only the surface of the limestone is heated, the internal temperature is not enough, and the reaction cannot be completed, resulting in incomplete calcination, poor product quality. At the same time, it is necessary to extend the calcination time or increase the temperature, increasing fuel consumption. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving, environmental protection and automated lime kiln, aiming to solve the problems proposed in the above background art.

[0005] The present invention provides the following technical solutions: An energy-saving, environmental protection and automated lime kiln, including a base, and a heating and decomposition assembly is arranged on the base; The heating and decomposition assembly includes a perlite heat insulation plate arranged at the top of the inner cavity of the base. A turntable is arranged on the top of the perlite heat insulation plate. A furnace body is installed on the top of the turntable through bolts. A plurality of through holes communicating with each other are respectively formed through the perlite heat insulation plate and the turntable; A limiting cavity is formed between the perlite heat insulation plate and the rotating plate. Two baffles are arranged in the limiting cavity. A combustion tube is arranged on the top of the rotating plate. Two connecting plates are rotatably connected to the combustion tube. One side of each connecting plate is fixedly provided with a heat conduction cylinder. A plurality of heat conduction rods are fixedly arranged on the outer sides of the two heat conduction cylinders. Both ends of the combustion tube penetrate through the furnace body and extend to the outside of the furnace body. A protective frame is slidably connected to the end of the combustion tube. The protective frame is installed on the outside of the furnace body through bolts. A flame sprayer is arranged on the protective frame. The bottom end of the flame sprayer is installed on the combustion tube through a flange. The combustion tube is slidably connected to the furnace body. A plurality of ventilation filter cartridges for guiding are embedded in the connecting plate. The connecting plate, the combustion tube and the heat conduction cylinder are communicated with each other; It can be seen that in the above technical solution, the limestone gathers in the furnace body and can cover the combustion tube and the heat conduction cylinder. The flame is conveyed to the inside of the combustion tube through the flange at the end of the combustion tube by the flame sprayer, so that the combustion tube and the heat conduction cylinder can be heated to generate high temperature, and then the limestone in the furnace body is heated and decomposed into quicklime and carbon dioxide. Due to the traction and friction generated when the heat conduction cylinder and the heat conduction rod rotate along with the rotating plate, they rotate axially along the combustion tube in the furnace body. When the heat conduction rod rotates, it breaks and stirs the larger limestone, which is conducive to the heat generated by the heating of the heat conduction cylinder to be distributed on the limestone, and is conducive to the effective transfer of heat to the inside of the limestone, not only shortening the calcination time but also accelerating the heat penetration, reducing the fuel consumption, and at the same time effectively avoiding overburning on the surface of the limestone, resulting in too high external temperature, leading to coarse crystallization and even melting and caking; Extension plates are fixedly arranged on the outer sides of the two baffles. An upper edge ring is fixedly arranged on the outer side of the top of the base. The extension plates extend to the top surface of the upper edge ring and are rotatably connected to the upper edge ring. Gears are fixedly arranged on the two extension plates. A rack is arranged between the two gears. The rack is meshed with the gears and extends between the two baffles. An electric push rod for driving the displacement of the rack is installed at the bottom of the upper edge ring through bolts; It can be seen that in the above technical solution, the output end of the electric push rod extends to drive the rack to displace between the two baffles. Since the rack is meshed with the gears and the baffle is rotatably connected to the upper edge ring through the extension plate, when the gear rotates, it can drive the extension plate and the baffle to deflect along the axis point of the connection between the extension plate and the upper edge ring, so that the through holes on the rotating plate can lose their blockage, and the decomposed limestone can be discharged through the through holes on the perlite heat insulation plate and the rotating plate and conveyed into the base.

[0006] A feed cover for feeding is provided at the top of the furnace body. An extension sleeve is fixedly provided at the bottom of the feed cover. The extension sleeve is located outside the furnace body and is detachably connected to the furnace body by bolts. A sealing cover is provided at the top of the feed cover. A blanking frame opening is formed through the surface of the base. A blanking hopper is provided outside the blanking frame opening. The blanking hopper is installed on the base by bolts. A limit seat is installed inside the base by bolts. A blanking plate is rotatably connected to the top of the limit seat. The blanking plate is located at the bottom of the perlite heat insulation plate. The shape of the blanking plate is frustum-shaped. A motor for driving the rotation of the blanking plate, the perlite heat insulation plate and the turntable is installed at the bottom of the base by bolts; It can be seen that in the above technical solution, the decomposed limestone in the base is shunted by the blanking plate and conveyed to the blanking hopper through the blanking frame opening for discharge. Through the perlite heat insulation plate at the bottom of the turntable, the heat loss rate in the furnace body can be effectively reduced. And through the ventilation filter cartridge on the connecting plate, when the flame burns in the combustion tube, the air flow can enter the combustion tube to avoid the phenomenon of lack of oxygen resulting in insufficient combustion temperature. At the same time, the combustion tube is slidably connected to the furnace body and the protective frame, so that when the limestone accumulates in the furnace body, the heat conduction cylinder and the combustion tube can displace along the guide of the protective frame on the furnace body, and it is easy for the combustion tube and the heat conduction cylinder to swing up and down in the furnace body due to the friction force of the turntable and the limestone, improving the heating and decomposition effect of the limestone.

[0007] The technical effects and advantages of the present invention: 1. In the present invention, the limestone gathers in the furnace body and can cover the combustion tube and the heat conduction cylinder. The flame is conveyed to the combustion tube through the flange at the end of the combustion tube by the flame sprayer, so that the combustion tube and the heat conduction cylinder can be heated to generate high temperature, and then the limestone in the furnace body is heated and decomposed into quicklime and carbon dioxide; 2. In the present invention, due to the traction force and friction force generated when the heat conduction cylinder and the heat conduction rod rotate through the turntable, they rotate along the axial direction of the combustion tube in the furnace body. When the heat conduction rod rotates, it breaks and stirs the larger limestone, which is conducive to the heat generated by heating the heat conduction cylinder to be distributed on the limestone, and is conducive to the effective transfer of heat to the inside of the limestone, not only shortening the calcination time but also accelerating the heat penetration, reducing the fuel consumption, and at the same time effectively avoiding overburning on the surface of the limestone resulting in too high external temperature leading to coarse crystallization or even melting and caking; 3. In the present invention, the output end of the electric push rod extends to drive the rack to displace between the two baffles, so that when the gear rotates, it can drive the extension plate and the baffle to deflect along the axis point of the connection between the extension plate and the upper edge ring, so that the through hole on the turntable can lose its blockage, and the decomposed limestone can be discharged through the through holes on the perlite heat insulation plate and the turntable and conveyed into the base, shunted by the blanking plate and conveyed to the blanking hopper through the blanking frame opening for discharge; 4. Through the perlite heat insulation plate at the bottom of the turntable, the present invention can effectively reduce the heat loss rate in the furnace body. And through the ventilation filter cylinder on the connecting plate, when the flame burns in the combustion tube, the air flow can enter the combustion tube, avoiding the phenomenon of lack of oxygen resulting in insufficient combustion temperature. Moreover, the heat conduction cylinder and the combustion tube can displace along the guide of the protective frame on the furnace body, making it easy for the combustion tube and the heat conduction cylinder to swing up and down in the furnace body due to the friction of the turntable and limestone, improving the heating and decomposition effect of limestone. In summary, through the corresponding cooperation of each structure, through the linkage design of the rotating heat conduction cylinder and the heat conduction rod, under the drive of the turntable, the limestone is dynamically crushed and stirred, breaking the traditional static stacking heating mode. It is easy for the heat generated by heating the heat conduction cylinder to be distributed on the limestone, and it is easy for the heat to be effectively transferred to the inside of the limestone. This not only shortens the calcination time but also accelerates the heat penetration, reduces fuel consumption. At the same time, it can effectively avoid overburning on the surface of the limestone, resulting in too high external temperature, leading to coarse crystallization or even melting and caking. The combustion tube and the heat conduction cylinder can slide in the furnace body. Combining the rotation of the turntable and the friction of the limestone, a swinging motion up and down is formed, dynamically adjusting the contact area between the heating element and the material, and further strengthening the heat transfer path. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings required for some embodiments. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limitations on the actual dimensions of the products, the actual processes of the methods, the actual timings of the signals, etc. involved in the embodiments of the present disclosure.

[0009] Figure 1 It is the front view of the overall structure of the present invention.

[0010] Figure 2 It is the side view of the overall structure of the present invention.

[0011] Figure 3 It is the cross-sectional view of the overall structure of the present invention.

[0012] Figure 4 It is the schematic diagram when the base, turntable, rack and gear of the present invention are installed together.

[0013] Figure 5 It is the schematic diagram of the combustion tube, connecting plate, heat conduction cylinder and heat conduction rod located in the furnace body of the present invention.

[0014] Figure 6 It is the schematic diagram of the baffle, turntable, limit seat, rack, electric push rod and gear of the present invention.

[0015] Figure 7 For the present invention Figure 6 exploded view.

[0016] Figure 8 For the present invention Figure 5 exploded view.

[0017] The reference numerals in the drawings are: 1, base; 2, furnace body; 3, perlite heat insulation plate; 4, turntable; 5, through hole; 6, limiting cavity; 7, baffle; 8, combustion tube; 9, connecting plate; 10, heat conduction cylinder; 11, heat conduction rod; 12, protection frame; 13, flame sprayer; 14, rack; 15, electric push rod; 16, gear; 17, feeding cover; 18, hopper; 19, limiting seat; 20, feeding plate; 21, motor; 22, ventilation filter cartridge; 23, hopper frame opening. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] As shown in the Figures 1-8 accompanying drawings, an energy-saving and environment-friendly automatic lime kiln, through the heating and decomposition assembly arranged on the base 1, when the heat conduction rod 11 rotates, it breaks and stirs larger limestone, making it easy for the heat generated by heating the heat conduction cylinder 10 to be distributed on the limestone, and it is easy for the heat to be effectively transferred into the limestone, not only shortening the calcination time but also accelerating the heat penetration, reducing fuel consumption, and at the same time effectively avoiding overburning on the surface of the limestone, resulting in too high external temperature, causing crystal coarsening or even melting and caking. The combustion tube 8 and the heat conduction cylinder 10 can swing up and down in the furnace body 2 due to the friction force of the turntable 4 and the limestone, improving the heating and decomposition effect of the limestone, and the specific structure of the assembly is as follows; The heating and decomposition assembly includes a perlite heat insulation plate 3 arranged at the top of the inner cavity of the base 1. A turntable 4 is arranged on the top of the perlite heat insulation plate 3. The furnace body 2 is installed on the top of the turntable 4 through bolts. A plurality of interconnected through holes 5 are respectively formed through the perlite heat insulation plate 3 and the turntable 4; A limited position cavity 6 is formed between the perlite heat insulation plate 3 and the rotary table 4. Two baffles 7 are arranged in the limited position cavity 6. A combustion tube 8 is arranged on the top of the rotary table 4. Two connecting plates 9 are rotatably connected to the combustion tube 8. One side of each connecting plate 9 is fixedly provided with a heat conduction cylinder 10. A number of heat conduction rods 11 are fixedly arranged on the outer sides of the two heat conduction cylinders 10. Both ends of the combustion tube 8 penetrate through the furnace body 2 and extend to the outside of the furnace body 2. A protective frame 12 is slidably connected to the end of the combustion tube 8. The protective frame 12 is installed on the outside of the furnace body 2 through bolts. A flame sprayer 13 is arranged on the protective frame 12. The bottom end of the flame sprayer 13 is installed on the combustion tube 8 through a flange. The combustion tube 8 is slidably connected to the furnace body 2. A number of ventilation filter cartridges 22 for guiding flow are embedded in the connecting plate 9. The connecting plate 9, the combustion tube 8 and the heat conduction cylinder 10 are communicated with each other; Extension plates are fixedly arranged on the outer sides of the two baffles 7. An upper edge ring is fixedly arranged on the outer side of the top of the base 1. The extension plates extend to the top surface of the upper edge ring and are rotatably connected to the upper edge ring. Gears 16 are fixedly arranged on the two extension plates. A rack 14 is arranged between the two gears 16. The rack 14 is engaged with the gears 16. The rack 14 extends between the two baffles 7. An electric push rod 15 for driving the displacement of the rack 14 is installed at the bottom of the upper edge ring through bolts; A feed cover 17 for feeding is arranged on the top of the furnace body 2. An extension sleeve is fixedly arranged at the bottom of the feed cover 17. The extension sleeve is located outside the furnace body 2 and is detachably connected to the furnace body 2 through bolts. A sealing cover is arranged on the top of the feed cover 17. A blanking frame opening 23 is formed through the surface of the base 1. A blanking hopper 18 is arranged outside the blanking frame opening 23. The blanking hopper 18 is installed on the base 1 through bolts. A limiting seat 19 is installed inside the base 1 through bolts. A blanking disc 20 is rotatably connected to the top of the limiting seat 19. The blanking disc 20 is located at the bottom of the perlite heat insulation plate 3. The shape of the blanking disc 20 is frustum-shaped. A motor 21 for driving the rotation of the blanking disc 20, the perlite heat insulation plate 3 and the rotary table 4 is installed at the bottom of the base 1 through bolts; The specific working principle is as follows. When heating and decomposing limestone, the crushed limestone is introduced into the furnace body 2 through the feed cover 17. The limestone gathers in the furnace body 2 and can cover the combustion tube 8 and the heat conduction cylinder 10. The flame is conveyed into the combustion tube 8 through the flange at the end of the combustion tube 8 by the flame sprayer 13. Then the combustion tube 8 and the heat conduction cylinder 10 can be heated to generate high temperature. Then the limestone in the furnace body 2 is heated and decomposed into quicklime and carbon dioxide; Meanwhile, to further improve the decomposition effect of limestone, the motor 21 is started to drive the feeding tray 20, the perlite heat insulation tray 3 and the turntable 4 to rotate. The feeding tray 20, the perlite heat insulation tray 3 and the turntable 4 are installed at the output end of the motor 21 through flanges, so as to facilitate the motor 21 to drive the feeding tray 20, the perlite heat insulation tray 3 and the turntable 4 to rotate. When the turntable 4 rotates, it can contact the heat conduction rod 11, and then the heat conduction cylinder 10 and the heat conduction rod 11 can rotate along the axial direction of the combustion tube 8 in the furnace body 2 due to the traction force and frictional force generated when the turntable 4 rotates. When the heat conduction rod 11 rotates, it breaks and stirs the larger limestone, which is conducive to the heat generated by heating the heat conduction cylinder 10 to be distributed on the limestone, and is conducive to the effective transfer of heat to the inside of the limestone. This not only shortens the calcination time but also accelerates the heat penetration, reduces the fuel consumption, and at the same time can effectively avoid overburning on the surface of the limestone, resulting in too high external temperature, leading to coarse crystallization or even melting and caking.

[0020] After the limestone is heated in the furnace body 2, the electric push rod 15 is started. The output end of the electric push rod 15 extends to drive the toothed rod 14 to displace between the two baffles 7. Since the toothed rod 14 meshes with the gear 16, and the baffle 7 is rotationally connected to the upper edge ring through the extension plate, then when the gear 16 rotates, it can drive the extension plate and the baffle 7 to deflect along the axis point of the connection between the extension plate and the upper edge ring. Then the through hole 5 on the turntable 4 can be unsealed, so that the decomposed limestone can be discharged through the through holes 5 on the perlite heat insulation tray 3 and the turntable 4 and conveyed into the base 1, and then is shunted by the feeding tray 20 and conveyed into the feeding hopper 18 through the feeding frame opening 23 and discharged.

[0021] And through the perlite heat insulation tray 3 at the bottom of the turntable 4, the heat loss rate in the furnace body 2 can be effectively reduced. And through the ventilation filter cylinder 22 on the connecting plate 9, when the flame burns in the combustion tube 8, the air flow can enter the combustion tube 8, avoiding the phenomenon of lack of oxygen resulting in insufficient combustion temperature. At the same time, the combustion tube 8 is slidably connected to the furnace body 2 and the protective frame 12, so as to facilitate the accumulation of limestone in the furnace body 2.

[0022] When the turntable 4 rotates, the limestone contacts the heat conduction cylinder 10 and the combustion tube 8. Due to the frictional force of the limestone, the up and down swing amplitudes of the heat conduction cylinder 10 and the combustion tube 8 can displace along the guide of the protective frame 12 on the furnace body 2. By means of the up and down swing amplitudes of the heat conduction cylinder 10 and the combustion tube 8, it is easy to quickly disperse the limestone, avoid uneven heating of the limestone, and improve the heating and decomposition effect of the limestone.

[0023] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving and environmentally friendly automated limestone furnace, comprising a base (1), characterized in that: The base (1) is provided with a heating and decomposition component; The heating and decomposition assembly comprises a perlite insulation plate (3) arranged at the top of the inner cavity of the base (1); a turntable (4) is arranged at the top of the perlite insulation plate (3); a furnace body (2) is mounted on the top of the turntable (4) via bolts; and a plurality of interconnected through holes (5) are provided on the perlite insulation plate (3) and the turntable (4); A limiting cavity (6) is formed between the perlite insulation disk (3) and the rotating disk (4), two baffles (7) are arranged in the limiting cavity (6), a combustion tube (8) is arranged on the top of the rotating disk (4), two connecting disks (9) are rotatably connected to the combustion tube (8), and a heat conduction tube (10) is fixedly arranged on one side of each connecting disk (9), and a plurality of heat conduction rods (11) are fixedly arranged on the outer sides of the two heat conduction tubes (10).

2. The energy-saving and environmentally friendly automatic lime dense furnace according to claim 1 is characterized in that: Both ends of the combustion tube (8) penetrate the furnace body (2) and extend to the outside of the furnace body (2), and the ends of the combustion tube (8) are slidably connected to a protection frame (12), the protection frame (12) is mounted on the outside of the furnace body (2) by bolts, and a flamethrower (13) is provided on the protection frame (12).

3. The energy-saving and environmentally friendly automatic lime dense furnace according to claim 1 is characterized in that: An extension plate is fixedly provided on the outer sides of the two baffles (7), an upper edge ring is fixedly provided on the outer side of the top of the base (1), the extension plate extends to the top surface of the upper edge ring and is rotatably connected to the upper edge ring, and a gear (16) is fixedly provided on the two extension plates.

4. The energy-saving and environmentally friendly automatic limestone furnace according to claim 3 is characterized in that: A gear rod (14) is provided between the two gears (16), the gear rod (14) meshing with the gear (16), and the gear rod (14) extends between the two baffles (7), and an electric push rod (15) for driving the gear rod (14) to move is installed at the bottom of the upper edge ring via bolts.

5. The energy-saving and environmentally friendly automatic limestone furnace according to claim 1 is characterized in that: A feed cover (17) for feeding is arranged on the top of the furnace body (2), an extension sleeve is fixedly arranged on the bottom of the feed cover (17), and the extension sleeve is located outside the furnace body (2) and is detachably connected to the furnace body (2) by bolts, and a sealing cover is arranged on the top of the feed cover (17).

6. The energy-saving and environmentally friendly automatic limestone furnace according to claim 1 is characterized in that: A material discharge frame opening (23) is formed through the surface of the base (1), a material discharge hopper (18) is arranged outside the material discharge frame opening (23), and the material discharge hopper (18) is mounted on the base (1) by means of bolts.

7. The energy-saving and environmentally friendly automatic limestone furnace according to claim 1 is characterized in that: A limit seat (19) is installed inside the base (1) by means of bolts, and a material discharge tray (20) is rotatably connected to the top of the limit seat (19), and the material discharge tray (20) is located at the bottom of the perlite insulation tray (3).

8. The energy-saving and environmentally friendly automatic limestone furnace according to claim 7 is characterized in that: The material discharge tray (20) is configured to be truncated into a cone shape, and a motor (21) for driving the material discharge tray (20), the perlite insulation tray (3) and the rotating tray (4) to rotate is installed at the bottom of the base (1) via bolts.

9. The energy-saving and environmentally friendly automatic limestone furnace according to claim 1, characterized in that: A plurality of ventilation filter cartridges (22) for guiding flow are embedded in the connection plate (9), and the connection plate (9), the combustion tube (8) and the heat-conducting tube (10) are connected.

10. The energy-saving and environmentally friendly automatic limestone furnace according to claim 2, characterized in that: The bottom end of the flamethrower (13) is mounted on the combustion tube (8) via a flange, and the combustion tube (8) is slidably connected to the furnace body (2).

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