Novel energy-saving limestone calcining treatment equipment

Abstract

The utility model discloses novel energy-saving limestone calcining treatment equipment, which relates to the technical field of limestone processing, and comprises a base and a calcining kiln arranged on the base, the calcining kiln comprises a calcining cylinder, a feeding cylinder, a sealing cover and a discharging pipe; the calcining barrel is of a hollow structure, one end of the calcining barrel is open, the feeding barrel is rotationally arranged on the outer wall of the open end of the calcining barrel, the sealing cover is arranged at the end, away from the end cover, of the feeding barrel, and the discharging pipe is arranged below the side, away from the feeding barrel, of the calcining barrel; an electric heating plate is arranged in the interlayer of the calcining cylinder; two bearings are arranged on the outer wall of the calcining cylinder, the calcining cylinder can rotate in the bearings, a first lifting device used for adjusting the angle of the calcining cylinder is arranged at the bottom of each bearing, and the first lifting devices are arranged at the top of the base; and the function of uniform calcination is achieved, exhausted hot air is utilized, limestone is preheated, the cost can be reduced, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of limestone processing technology, specifically a new type of energy-saving limestone calcination equipment. Background Technology

[0002] Limestone is widely used in building materials and industrial raw materials. Limestone can be directly processed into stone and burned into quicklime. Quicklime absorbs moisture or becomes slaked lime when it is mixed with water. Slaked lime is then mixed into lime slurry, lime paste, etc., which are used as coating materials and brick and tile adhesives. Limestone combustion is mainly achieved by heating through calcination equipment, which mainly consists of vertical kilns or rotary kilns.

[0003] Currently, Chinese utility model patent CN209619210U discloses a novel energy-saving limestone calcination equipment, including a rotary kiln and an exhaust fan. A conveying pipe is welded to the left side of the rotary kiln, and an adjusting device is provided inside the conveying pipe. A preheating chamber is welded to the top of the conveying pipe, and a feed inlet is welded to the top of the preheating chamber. Insulation cotton is provided inside the preheating chamber. A cooling chamber is welded to the right side of the rotary kiln, and an exhaust cover is provided at the top of the cooling chamber. A fixed shell is welded to the outer surface of the cooling chamber, and a water pipe is embedded inside the fixed shell. A water inlet is provided at the bottom of the water pipe and is located on the front outer surface of the fixed shell. A discharge port is welded to the lower surface of the cooling chamber.

[0004] In practical use, it was found that although limestone could be stirred, the raw materials on both sides of the rotary kiln could not be fully mixed, resulting in low stirring efficiency, which in turn affected the limestone calcination efficiency and failed to meet the usage requirements. At the same time, the hot gas generated during the calcination of limestone in the existing rotary kiln was directly discharged, which not only affected the surrounding environment but also could not be recycled. Therefore, we proposed a new type of energy-saving limestone calcination equipment to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of energy-saving limestone calcination equipment that achieves uniform calcination, utilizes the discharged hot air to preheat the limestone, thereby reducing costs and improving practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel energy-saving limestone calcination equipment, comprising a base and a calcination kiln mounted on the base. The calcination kiln includes a calcination cylinder, a feed cylinder, a sealing cover, and a discharge pipe. The calcination cylinder has a hollow structure with one end open. The feed cylinder is rotatably mounted on the outer wall of the open end of the calcination cylinder. The sealing cover is located at the end of the feed cylinder away from the end cover. The discharge pipe is located below the side of the calcination cylinder away from the feed cylinder. An electric heating plate is installed inside the interlayer of the calcination cylinder. Two bearings are installed on the outer wall of the calcination cylinder, and the calcination cylinder can rotate within the bearings. A first lifting device for adjusting the angle of the calcination cylinder is installed at the bottom of the bearings, and the first lifting device is located at the top of the base. A drive mechanism for driving the rotation of the calcination cylinder is installed below the calcination cylinder.

[0007] On the other side of the sealing cover, there is a preheating cylinder with an outer diameter smaller than that of the feed cylinder. An exhaust pipe is provided on the feed cylinder, and the other end of the exhaust pipe is connected to the top of the preheating cylinder.

[0008] To enable the calcination cylinder to rotate, as a preferred embodiment of this novel energy-saving limestone calcination equipment, the driving mechanism includes a fixed frame, a motor, a reducer, a drive wheel, and a gear. The fixed frame is U-shaped, with its top two sides fixedly connected to the outer circumferential walls of two bearings. The motor and reducer are both located at the bottom inside the fixed frame and are connected in a transmission manner. The output end of the reducer is fixedly connected to the drive wheel via a rotating shaft. The drive wheel and gear are meshed, and the inner circumferential wall of the gear is fixedly connected to the outer circumferential wall of the calcination cylinder.

[0009] To facilitate cleaning of the calcining cylinder, as a preferred embodiment of this novel energy-saving limestone calcining equipment, the calcining kiln is equipped with a shovel sleeve inside. The inner diameter of the shovel sleeve gradually decreases towards the feed cylinder, and the feed cylinder is equipped with a first telescopic device that is fixedly connected to the shovel sleeve.

[0010] To facilitate the insertion of the preheating cylinder open into the feeding cylinder, in a preferred embodiment of this novel energy-saving limestone calcination equipment, the preheating cylinder has a hollow structure with one end open, the open end of the preheating cylinder facing the feeding cylinder, a connecting cap threaded onto the outer wall of the open end of the preheating cylinder, and the inner diameter of the preheating cylinder is slightly smaller than the inner diameter of the feeding cylinder, and the center lines of the preheating cylinder and the feeding cylinder coincide.

[0011] To enable the preheating cylinder to move automatically and feed materials, as a preferred embodiment of this novel energy-saving limestone calcination equipment, the preheating cylinder is equipped with a pusher plate inside, and a second telescopic device fixedly connected to the pusher plate is provided on the side of the preheating cylinder away from the open end; a sliding groove is provided on the top of the base along the length direction, a sliding seat is provided in the sliding groove, and the upper end of the sliding seat protrudes from the sliding groove; a second lifting device is provided on the top of the sliding seat and hinged to the top of the preheating cylinder; a third telescopic device is provided on the base and fixedly connected to the sliding seat.

[0012] For ease of selection of the first lifting device, second lifting device, first telescopic device, second telescopic device, and third telescopic device, as a preferred embodiment of the new energy-saving limestone calcination equipment of this utility model, the first lifting device, second lifting device, first telescopic device, second telescopic device, and third telescopic device are electric telescopic rods, pneumatic telescopic rods, or hydraulic telescopic rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, limestone is fed into the calcining cylinder through the feed inlet. An electric heating plate heats the calcining cylinder to calcine the limestone. The motor is started to make the calcining cylinder rotate, and the first lifting device is activated to adjust the angle of the calcining cylinder. This facilitates the movement and mixing of limestone on both sides towards the center, ensuring uniform heating of the limestone. This makes it easier for the limestone in the calcining cylinder to be heated and calcined evenly, thus improving the efficiency and quality of limestone calcination.

[0015] 2. In this utility model, the hot gas generated in the calcining cylinder is transported to the preheating cylinder through the exhaust pipe. The hot gas entering the preheating cylinder can preheat the limestone in the preheating cylinder, avoiding the direct discharge of hot gas from the calcining cylinder and the waste of heat energy. Moreover, when calcining is performed next time, the limestone in the preheating cylinder is directly transported to the calcining cylinder for heating and calcination, which can not only reduce the firing time, but also reduce the preheating cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the AA-direction structure;

[0018] Figure 3 This is a schematic diagram of the drive mechanism of this utility model.

[0019] In the diagram: 1. Base; 2. Calcination kiln; 3. Calcination cylinder; 4. Feed cylinder; 5. Sealing cover; 6. Discharge pipe; 7. Electric heating plate; 8. Bearing; 9. First lifting device; 10. Drive mechanism; 11. Preheating cylinder; 12. Exhaust pipe; 13. Fixing frame; 14. Motor; 15. Reducer; 16. Drive wheel; 17. Gear; 18. Shovel sleeve; 19. First telescopic device; 20. Connecting cover; 21. Push plate; 22. Second telescopic device; 23. Slide groove; 24. Slide seat; 25. Second lifting device; 26. Third telescopic device. Detailed Implementation

[0020] Please see Figures 1 to 3 A novel energy-saving limestone calcination equipment includes a base 1 and a calcination kiln 2 mounted on the base 1. The calcination kiln 2 includes a calcination cylinder 3, a feed cylinder 4, a sealing cover 5, and a discharge pipe 6. The calcination cylinder 3 has a hollow structure with one end open. The feed cylinder 4 is rotatably mounted on the outer wall of the open end of the calcination cylinder 3. The sealing cover 5 is located at the end of the feed cylinder 4 away from the end cover. The discharge pipe 6 is located below the side of the calcination cylinder 3 away from the feed cylinder 4. An electric heating plate 7 is installed inside the interlayer of the calcination cylinder 3. Two bearings 8 are installed on the outer wall of the calcination cylinder 3, and the calcination cylinder 3 can rotate within the bearings 8. A first lifting device 9 for adjusting the angle of the calcination cylinder 3 is installed at the bottom of the bearings 8. The first lifting device 9 is located at the top of the base 1. A drive mechanism 10 for driving the rotation of the calcination cylinder 3 is installed below the calcination cylinder 3.

[0021] On the other side of the sealing cover 5, there is a preheating cylinder 11 with an outer diameter smaller than that of the feed cylinder 4. An exhaust pipe 12 is provided on the feed cylinder 4, and the other end of the exhaust pipe 12 is connected to the top of the preheating cylinder 11.

[0022] In this embodiment: The sealing cover 5 is opened, and limestone is fed into the calcining cylinder 3 through the feed inlet. The sealing cover 5 is then closed, and the electric heating plate 7 inside the calcining cylinder 3 is energized. The electric heating plate 7 heats the calcining cylinder 3, and through heat transfer, the limestone inside the calcining cylinder 3 is heated. The driving mechanism 10 causes the calcining cylinder 3 to rotate within the bearing 8. This rotation facilitates the flipping of the limestone inside the calcining cylinder 3. The first lifting device 9 is then activated to adjust the angle of the calcining cylinder 3, allowing the limestone on both sides to move towards the center for mixing, thus achieving uniform heating. After calcination, the first lifting device 9 is activated again to lower the side of the calcining cylinder 3 with the discharge pipe 6. Opening the discharge pipe 6 allows for the quick and easy discharge of the calcined limestone from the calcining cylinder 3, achieving uniform calcination. A portion of limestone is pre-loaded into the preheating cylinder 11. During calcination of the limestone in the calcining cylinder 3, the exhaust pipe 12 transports the hot air generated in the calcining cylinder 3 to the preheating cylinder 11. This hot air preheats the limestone within the preheating cylinder 11, preventing direct discharge of hot air from the calcining cylinder 3 and reducing energy waste, while also minimizing environmental impact. Furthermore, after the limestone in the calcining cylinder 3 has been calcined, the limestone in the preheating cylinder 11 is directly transferred to the calcining cylinder 3 for further heating and calcination, reducing both calcination time and preheating costs.

[0023] As a technical optimization of this utility model, the drive mechanism 10 includes a fixed frame 13, a motor 14, a reducer 15, a drive wheel 16, and a gear 17. The fixed frame 13 is U-shaped, and the two sides of the top of the fixed frame 13 are fixedly connected to the outer circumferential walls of the two bearings 8 respectively. The motor 14 and the reducer 15 are both located at the bottom inside the fixed frame 13, and the motor 14 and the reducer 15 are connected in a transmission. The output end of the reducer 15 is fixedly connected to the drive wheel 16 through a rotating shaft. The drive wheel 16 and the gear 17 are meshed. The inner circumferential wall of the gear 17 is fixedly connected to the outer circumferential wall of the calcining cylinder 3.

[0024] In this embodiment: the motor 14 and the reducer 15 can be easily installed below the calcining cylinder 3 by the fixing frame 13. When the motor 14 is started, the reducer 15 drives the drive wheel 16 to rotate. The drive wheel 16 and the gear 17 mesh, so that the calcining cylinder 3 can rotate. The rotation of the calcining cylinder 3 makes it easy to stir the limestone in the calcining cylinder 3 and make it easy for the limestone in the calcining cylinder 3 to be heated and calcined evenly.

[0025] As a technical optimization of this utility model, a shovel sleeve 18 is provided inside the calcining kiln 2. The inner diameter of the shovel sleeve 18 gradually decreases towards the side of the feed cylinder 4. A first telescopic device 19 is provided on the feed cylinder 4 and is fixedly connected to the shovel sleeve 18.

[0026] In this embodiment, the inner diameter of the shovel sleeve 18 facing the discharge pipe 6 is large. When the first telescopic device 19 is activated, the shovel sleeve 18 moves towards the discharge pipe 6, which makes it easy to automatically clean the limestone on the inner wall of the calcining cylinder 3 and prevent the limestone from sticking to the inner wall of the calcining cylinder 3.

[0027] As a technical optimization of this utility model, the preheating cylinder 11 has a hollow structure and one end is open. The open end of the preheating cylinder 11 faces the feeding cylinder 4. A connecting cover 20 is threaded on the outer wall of the open end of the preheating cylinder 11. The inner diameter of the preheating cylinder 11 is slightly smaller than the inner diameter of the feeding cylinder 4, and the center lines of the preheating cylinder 11 and the feeding cylinder 4 coincide.

[0028] The preheating cylinder 11 is equipped with a pusher plate 21 inside. A second telescopic device 22 is fixedly connected to the pusher plate 21 on the side of the preheating cylinder 11 away from the opening. A sliding groove 23 is opened on the top of the base 1 along the length direction. A sliding seat 24 is provided in the sliding groove 23, and the upper end of the sliding seat 24 protrudes from the sliding groove 23. A second lifting device 25 is provided on the top of the sliding seat 24 and is hinged to the top of the preheating cylinder 11. A third telescopic device 26 is provided on the base 1 and is fixedly connected to the sliding seat 24.

[0029] In this embodiment: the third telescopic device 26 on the fixed base is activated, and the third telescopic device 26 pushes the slide 24 to move towards one side of the calcining cylinder 3; when the slide 24 moves, it simultaneously drives the preheating cylinder 11 to move, and opens the connecting cover 20 and the sealing cover 5, so that one open end of the preheating cylinder 11 extends into the feeding cylinder 4; and the second telescopic device 22 is activated, so that the push plate moves towards one side of the feeding cylinder 4, which makes it easy to transport the preheated limestone in the preheating cylinder 11 into the calcining cylinder 3, realizing the function of automatic feeding. The inner diameter of the preheating cylinder 11 is slightly smaller than the inner diameter of the feeding cylinder 4, which makes it easier to fit one open end of the preheating cylinder 11 into the feeding cylinder 4; the slide 24 is restricted by the sliding groove 23, so that the preheating cylinder 11 can only move in a straight line, and by activating the second lifting device 25, the inclination of the preheating cylinder 11 can be adjusted, making it easy to add limestone to be preheated into the preheating cylinder 11;

[0030] The exhaust pipe 12 is a telescopic pipe; the preheating cylinder 11 is equipped with a pressure gauge and a safety exhaust valve (the pressure gauge and safety exhaust valve are not shown in the figure), which facilitates the safe release of air pressure in the preheating cylinder 11 and avoids excessive pressure.

[0031] As a technical optimization of this utility model, the first lifting device 9, the second lifting device 25, the first telescopic device 19, the second telescopic device, and the third telescopic device 26 are electric telescopic rods, pneumatic telescopic rods, or hydraulic telescopic rods.

[0032] In this embodiment: the first lifting device 9, the second lifting device 25, the first telescopic device 19, the second telescopic device, and the third telescopic device 26 can be electric telescopic rods, pneumatic telescopic rods, or hydraulic telescopic rods.

[0033] Working principle and usage process of this utility model:

[0034] Limestone is fed into the calcining cylinder 3 through the feed inlet. The sealing cover 5 is closed, and the electric heating plate 7 inside the calcining cylinder 3 is energized. The electric heating plate 7 heats the calcining cylinder 3, and through heat transfer, the limestone inside the calcining cylinder 3 is heated. The calcining cylinder 3 is rotated within the bearing 8 by the drive mechanism 10. During rotation, the first lifting device 9 is activated to adjust the angle of the calcining cylinder 3, facilitating the movement and mixing of limestone from both sides towards the center, ensuring uniform heating. After calcination, a portion of limestone is pre-loaded into the preheating cylinder 11. While the calcining cylinder 3 is calcining the limestone, the hot air generated inside the calcining cylinder 3 is transported to the preheating cylinder 11 through the exhaust pipe 12 for preheating. The hot air inside cylinder 11 can preheat the limestone inside the preheating cylinder 11. After calcination, the first lifting device 9 is activated to lower the side of the calcining cylinder 3 with the discharge pipe 6 and open the discharge pipe 6 to facilitate the quick discharge of the calcined limestone inside the calcining cylinder 3. Then, the third telescopic device 26 on the fixed base is activated. The third telescopic device 26 pushes the slide 24 to move the preheating cylinder 11 in sync and opens the connecting cover 20 and the sealing cover 5, so that the open end of the preheating cylinder 11 extends into the feeding cylinder 4. The second telescopic device 22 is activated so that the push plate transports the preheated limestone in the preheating cylinder 11 into the calcining cylinder 3. The preheated limestone is heated and calcined, which can reduce the firing time and reduce the preheating cost.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel energy-saving limestone calcination treatment device, comprising a base (1) and a calcination kiln (2) arranged on the base (1), characterized in that: The calcination kiln (2) comprises a calcination cylinder (3), a feeding cylinder (4), a sealing cover (5), a discharging pipe (6); the calcination cylinder (3) is in a hollow structure, and one end is in an open state, the feeding cylinder (4) is rotatably arranged on the outer wall of the open end of the calcination cylinder (3), the sealing cover (5) is arranged on the end of the feeding cylinder (4) away from the end cover, and the discharging pipe (6) is arranged below the side of the calcination cylinder (3) away from the feeding cylinder (4); the interlayer of the calcination cylinder (3) is provided with an electric heating plate (7); two bearings (8) are arranged on the outer wall of the calcination cylinder (3), and the calcination cylinder (3) can rotate in the bearings (8), the bottom of the bearing (8) is provided with a first lifting device (9) for adjusting the angle of the calcination cylinder (3), and the first lifting device (9) is arranged on the top of the base (1); the bottom of the calcination cylinder (3) is provided with a driving mechanism (10) for driving the rotation of the calcination cylinder (3); The other side of the sealing cover (5) is provided with a preheating cylinder (11) with an outer diameter smaller than that of the feeding cylinder (4), and an exhaust pipe (12) is arranged on the feeding cylinder (4), and the other end of the exhaust pipe (12) is communicated with the top of the preheating cylinder (11).

2. A novel energy efficient limestone calcination treatment plant as claimed in claim 1, wherein: The driving mechanism (10) comprises a fixed frame (13), a motor (14), a speed reducer (15), a driving wheel (16) and a gear (17); the fixed frame (13) is in a U-shaped state, the circumferential outer wall of the two bearings (8) on the top of the fixed frame (13) is fixedly connected, the motor (14) and the speed reducer (15) are arranged on the bottom of the fixed frame (13), and the motor (14) and the speed reducer (15) are drivingly connected, the output end of the speed reducer (15) is fixedly connected with the driving wheel (16) through a rotating shaft, the driving wheel (16) and the gear (17) are meshed, and the circumferential inner wall of the gear (17) is fixedly connected with the circumferential outer wall of the calcination cylinder (3).

3. A novel energy efficient limestone calcination treatment plant as claimed in claim 1, wherein: The calcination kiln (2) is provided with a shovel sleeve (18), the inner diameter of the shovel sleeve (18) gradually decreases towards the side of the feeding cylinder (4), and the feeding cylinder (4) is provided with a first telescopic device (19) fixedly connected with the shovel sleeve (18).

4. A novel energy efficient limestone calcining treatment plant as claimed in claim 1, wherein: The preheating cylinder (11) is in a hollow structure, and one end is in an open state, the open end of the preheating cylinder (11) faces the feeding cylinder (4), a connecting cover (20) is threadedly arranged on the outer wall of the open end of the preheating cylinder (11), the inner diameter of the preheating cylinder (11) is slightly smaller than the inner diameter of the feeding cylinder (4), and the center lines of the preheating cylinder (11) and the feeding cylinder (4) coincide.

5. A novel energy efficient limestone calcination treatment plant as claimed in claim 1, wherein: The preheating cylinder (11) is internally provided with a pushing plate (21), and the side of the preheating cylinder (11) away from the opening is provided with a second telescopic device (22) fixedly connected with the pushing plate (21); the top of the base (1) is provided with a sliding groove (23) along the length direction, the sliding groove (23) is internally provided with a sliding seat (24), and the upper end of the sliding seat (24) protrudes out of the sliding groove (23), and the top of the sliding seat (24) is provided with a second lifting device (25) hingedly connected with the top of the preheating cylinder (11); the base (1) is provided with a third telescopic device (26) fixedly connected with the sliding seat (24).

6. A novel energy efficient limestone calcining treatment plant as claimed in claim 1, wherein: The first lifting device (9), the second lifting device (25), the first telescopic device (19), the second telescopic device and the third telescopic device (26) are electric telescopic rods, pneumatic telescopic rods or hydraulic telescopic rods.

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