Energy-saving combustion device for firing lime

Abstract

The energy-saving combustion device comprises a furnace body and an installation plate, a combustor is fixedly installed at the bottom of the installation plate, a combustion pipe extending into the furnace body from the bottom of the furnace body is fixedly installed at the output end of the combustor, a heat radiation coating is arranged on the inner wall of the furnace body, and the heat radiation coating is arranged on the inner wall of the furnace body. A stirring assembly used for improving the lime combustion efficiency is further arranged in the furnace body, the stirring assembly comprises a first partition plate fixedly installed on the inner wall of the furnace body, a movable cover attached to the inner wall of the furnace body is rotationally installed at the top of the first partition plate, and a plurality of stirring rods are fixedly installed on the inner walls of the two sides of the movable cover correspondingly; and a fixed cover is further fixedly mounted on the inner wall of the furnace body. According to the energy-saving combustion device for firing the lime, through the arrangement of the thermal radiation coating, radiation heat exchange in the furnace body can be enhanced, the heat exchange efficiency is improved, the lime in the furnace body can be heated more uniformly, and therefore the lime combustion efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lime burning, in particular to an energy-saving burning device for burning lime. Background Art

[0002] Quicklime, also known as burnt lime, is mainly composed of calcium oxide. It is usually made by calcining natural rocks whose main component is calcium carbonate at high temperature, which can decompose them into carbon dioxide and calcium oxide. Any natural rock with calcium carbonate as the main component, such as limestone, chalk, dolomite limestone, etc., can be used to produce lime. In coastal areas, shells are used as raw materials, which are burned into shell ash for use as quicklime.

[0003] Chinese patent CN117466551A discloses a vertical continuous calcining lime kiln, which is provided with N combustion chambers made of high temperature resistant materials and opened at the bottom in the calcining area, the heat radiated from the outer wall of the combustion chamber can be absorbed and utilized by the surrounding ore, the lower end of the combustion chamber is open, the fine powder fuel or combustible gas ejected from the burner has a large combustion space for full combustion, high temperature fireworks are ejected from the lower end opening of the combustion chamber and burn from bottom to top in the calcination channel between the combustion chambers, the combustion channels are evenly distributed, and the ore can be fully and evenly calcined.

[0004] However, by comparing the above existing documents, the inventor believes that the following defects already exist:

[0005] In the actual use of the comparative document, although high-temperature fireworks are ejected from the opening at the lower end of the combustion chamber and burn from bottom to top in the calcination channel between the combustion chambers, when too much ore is accumulated inside the combustion chamber, the ore is heated better the lower it is, while the ore near the top of the combustion chamber is easily heated unevenly, which easily affects the combustion efficiency of the ore. In view of this, we propose an energy-saving combustion device for burning lime to solve the above problems. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides an energy-saving combustion device for burning lime, which solves the problem in the prior art that when too much ore is piled up, the ore further down is heated better, while the ore near the top of the combustion chamber is easily heated unevenly, which easily affects the combustion efficiency of the ore.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving combustion device for burning lime, comprising a furnace body and a mounting plate, a burner is fixedly mounted on the bottom of the mounting plate, a combustion tube extending from the bottom of the furnace body to the inside thereof is fixedly mounted on the output end of the burner, the inner wall of the furnace body is provided with a heat radiation coating, and the interior of the furnace body is also provided with a stirring assembly for improving the combustion efficiency of lime, the stirring assembly comprises a first partition fixedly mounted on the inner wall of the furnace body, a movable cover that fits the inner wall of the furnace body is rotatably mounted on the top of the first partition, and the inner walls on both sides of the movable cover are fixedly mounted It is equipped with several stirring rods, and a fixed cover is also fixedly installed on the inner wall of the furnace body. An auger rod extending to the inside of the fixed cover is rotatably installed on the top of the first partition, and a second partition is fixedly installed on the lower surface of the auger rod. A first gear ring is fixedly installed on the inner wall of the movable cover and located between the first partition and the second partition, and a second gear ring is fixedly installed on the surface of the auger rod and located below the second partition. A motor is fixedly installed on the top of the mounting plate, and a rotating shaft extending to the inside of the furnace body is fixedly installed on the output end of the motor, and a gear meshing with the first gear ring and the second gear ring is fixedly installed on the top of the rotating shaft.

[0008] Furthermore, the surfaces of the first partition plate and the second partition plate are both provided with a plurality of air holes, and the thermal radiation coating is a high-radiation ceramic layer.

[0009] Furthermore, a ring-shaped slide groove is provided on the top of the first partition, and a sliding block rotatably connected to the inner wall of the slide groove is fixedly installed on the bottom of the movable cover.

[0010] Furthermore, a sealing sleeve extending into the interior of the furnace body is fixedly installed at the bottom of the furnace body, and the rotating shaft is rotatably connected to the inner wall of the sealing sleeve.

[0011] Furthermore, a material feed port is fixedly installed on the top of the furnace body, and a material taking door is hinged on the surface of the furnace body.

[0012] Furthermore, a preheating box is fixedly mounted on one side of the mounting plate, and a preheating component for heat recovery is arranged outside the furnace body.

[0013] Furthermore, the preheating assembly includes a fan fixedly mounted on the top of the furnace body, an air inlet pipe extending into the furnace body is fixedly mounted on the air inlet end of the fan, and an air outlet pipe extending into the preheating box is fixedly mounted on the air outlet end of the fan.

[0014] Furthermore, a filter is fixedly installed on one side of the preheating box, a connecting pipe connected to the filter is fixedly installed on one side of the preheating box, and an exhaust pipe is installed on the output end of the filter.

[0015] Compared with the prior art, the utility model provides an energy-saving combustion device for burning lime, which has the following beneficial effects:

[0016] 1. The energy-saving combustion device for burning lime can strengthen the radiation heat exchange in the furnace body by setting the thermal radiation coating, improve the heat exchange efficiency, and then increase the heat energy transfer efficiency. At the same time, by driving the stirring rod and the auger rod to rotate, the stirring rod can stir the lime, which can make its distribution more uniform and improve the combustion efficiency. At the same time, the lime at the bottom position will move upward under the drive of the auger rod, and the conical design of the furnace body inner wall makes the lime at the upper position move downward. Such reciprocating can make the lime inside the furnace body more evenly heated, thereby greatly improving the efficiency of lime combustion.

[0017] 2. The energy-saving combustion device for burning lime puts other lime waiting to be burned into the preheating box, and draws the high-temperature flue gas inside the furnace body into the preheating box through a fan to preheat the lime inside, thereby increasing the temperature of the lime when it enters the furnace body to prepare for combustion, thereby reducing the time and energy required for subsequent heating of the lime in the furnace body, thereby achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross section of the furnace body of the utility model;

[0020] Figure 3 This is an enlarged cross-sectional view of the furnace body of the utility model;

[0021] Figure 4 This is a schematic diagram of the fixed cover and the auger rod of the utility model;

[0022] Figure 5 It is a schematic diagram of the second gear ring, gear and first gear ring of the utility model;

[0023] Figure 6 This is a cross-sectional view of the first baffle and the movable cover of the utility model.

[0024] In the figure: 1. furnace body; 2. mounting plate; 3. heat radiation coating; 4. fixed cover; 5. first partition; 6. second partition; 7. movable cover; 8. stirring rod; 9. auger rod; 10. motor; 11. rotating shaft; 12. second gear ring; 13. gear; 14. first gear ring; 15. feeding door; 16. fan; 17. air inlet pipe; 18. air outlet pipe; 19. preheating box; 20. filter; 21. connecting pipe; 22. exhaust pipe; 23. burner; 24. combustion pipe; 25. feeding port; 26. slider; 27. sealing sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 and Figure 2 An energy-saving combustion device for burning lime comprises a furnace body 1 and a mounting plate 2, a burner 23 is fixedly mounted on the bottom of the mounting plate 2, a combustion tube 24 extending from the bottom of the furnace body 1 to the inside thereof is fixedly mounted on the output end of the burner 23, and a heat radiation coating 3 is provided on the inner wall of the furnace body 1.

[0027] The thermal radiation coating 3 is a high-radiation ceramic layer. By setting the thermal radiation coating 3, the radiation heat exchange in the furnace body 1 can be enhanced, the heat exchange efficiency can be improved, and then the heat energy transfer efficiency can be increased, thereby improving the combustion efficiency of the lime.

[0028] See also Figure 3 , Figure 4 and Figure 5 A stirring assembly for improving the lime combustion efficiency is also provided inside the furnace body 1, and the stirring assembly includes a first partition plate 5 fixedly mounted on the inner wall of the furnace body 1, a movable cover 7 that fits the inner wall of the furnace body 1 is rotatably mounted on the top of the first partition plate 5, and a plurality of stirring rods 8 are fixedly mounted on the inner walls of both sides of the movable cover 7, and a fixed cover 4 is also fixedly mounted on the inner wall of the furnace body 1, an auger rod 9 extending to the inside of the fixed cover 4 is rotatably mounted on the top of the first partition plate 5, and a second partition plate 6 is fixedly mounted on the lower surface of the auger rod 9, a first gear ring 14 is fixedly mounted on the inner wall of the movable cover 7 and located between the first partition plate 5 and the second partition plate 6, a second gear ring 12 is fixedly mounted on the surface of the auger rod 9 and located below the second partition plate 6, and a motor 10 is fixedly mounted on the top of the mounting plate 2, and a rotating shaft 11 extending to the inside of the furnace body 1 is fixedly mounted on the output end of the motor 10, and a gear 13 meshing with the first gear ring 14 and the second gear ring 12 is fixedly mounted on the top of the rotating shaft 11.

[0029] Among them, during the combustion process, the motor 10 is started, and the motor 10 drives the gear 13 to rotate, thereby rotating the first gear ring 14 and the second gear ring 12, thereby rotating the movable cover 7 and the auger rod 9. When the movable cover 7 rotates, it will drive the stirring rod 8 to rotate. Since the second partition plate 6 and the stirring rod 8 rotate in opposite directions, the lime can be stirred by the stirring rod 8, which can make its distribution more even and improve the combustion efficiency.

[0030] In addition, since the high-temperature fireworks are introduced from the bottom of the furnace body 1, the lime at the bottom position is heated better, and the lime at the bottom position of the device will move upward under the drive of the auger rod 9, and the conical inner wall of the furnace body 1 makes the lime at the upper position move downward. This reciprocating process can make the lime inside the furnace body 1 more evenly heated, thereby greatly improving the efficiency of lime combustion.

[0031] See also Figure 6 In this embodiment, a plurality of air holes are provided on the surfaces of the first partition plate 5 and the second partition plate 6. A ring-shaped slide groove is provided on the top of the first partition plate 5, and a slider 26 rotatably connected to the inner wall of the slide groove is fixedly installed on the bottom of the movable cover 7.

[0032] The slide groove and the slider 26 are provided to facilitate the movable cover 7 to be rotatably mounted on the top of the first partition plate 5 .

[0033] In this embodiment, a sealing sleeve 27 extending into the interior of the furnace body 1 is fixedly mounted on the bottom of the furnace body 1 , and the rotating shaft 11 is rotatably connected to the inner wall of the sealing sleeve 27 .

[0034] The sealing sleeve 27 is provided to prevent high-temperature fireworks from leaking through the connection between the rotating shaft 11 and the furnace body 1 .

[0035] In this embodiment, a material feed port 25 is fixedly installed on the top of the furnace body 1 , a material taking door 15 is hingedly connected to the surface of the furnace body 1 , and a preheating box 19 is fixedly installed on one side of the mounting plate 2 .

[0036] See also Figure 1 A preheating component for heat recovery is arranged outside the furnace body 1, and the preheating component includes a fan 16 fixedly installed on the top of the furnace body 1, an air inlet pipe 17 extending to the inside of the furnace body 1 is fixedly installed at the air inlet end of the fan 16, and an air outlet pipe 18 extending to the inside of the preheating box 19 is fixedly installed at the air outlet end of the fan 16.

[0037] In addition, the high-temperature flue gas inside the furnace body 1 is drawn into the preheating box 19 by the fan 16 to preheat the lime inside, thereby increasing its temperature when it enters the furnace body 1 to prepare for combustion, thereby reducing the time and energy required for subsequent heating of the lime in the furnace body 1, thereby achieving energy saving.

[0038] In this embodiment, a filter 20 is fixedly installed on one side of the preheating box 19 , a connecting pipe 21 connected to the filter 20 is fixedly installed on one side of the preheating box 19 , and an exhaust pipe 22 is installed at the output end of the filter 20 .

[0039] In addition, the final flue gas is filtered and purified by the filter 20 before being recycled or discharged, thus ensuring a stable working environment.

[0040] It is worth noting that the filter 20 is a bag filter or an electrostatic precipitator, which is combined with other treatment equipment such as desulfurization equipment to ensure that the flue gas emissions meet environmental protection standards.

[0041] When the present embodiment is in use, lime is placed into the furnace body 1 through the feed port 25, lime to be burned is placed into the preheating box 19, the burner 23 is started, and high-temperature fireworks enter the furnace body 1 through the combustion tube 24 to heat and burn the lime. During the combustion process, the motor 10 is started, and the motor 10 drives the gear 13 to rotate, thereby rotating the first gear ring 14 and the second gear ring 12, thereby rotating the movable cover 7 and the auger rod 9. The movable cover 7 drives the stirring rod 8 to rotate when rotating, and since the second partition plate 6 and the stirring rod 8 rotate in opposite directions, the lime can be stirred by the stirring rod 8, which can make its distribution more uniform and improve the combustion efficiency. At the same time, the lime at the bottom position will move upward under the drive of the auger rod 9, and the conical inner wall of the furnace body 1 makes the lime at the upper position move downward. Such reciprocating rotation can make the lime inside the furnace body 1 more evenly heated, thereby greatly improving the efficiency of lime combustion.

[0042] The fan 16 is started, and the high-temperature flue gas inside the furnace body 1 is drawn into the preheating box 19 by the fan 16 to preheat the lime inside, thereby increasing the temperature of the flue gas when it enters the furnace body 1 to prepare for combustion, thereby reducing the time and energy required for subsequent heating of the lime in the furnace body 1, thereby achieving energy saving. The final flue gas is filtered and purified by the filter 20 and then recycled or discharged, ensuring environmental stability.

[0043] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0044] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An energy-saving combustion device for burning lime, comprising a furnace body (1) and a mounting plate (2), characterized in that: A burner (23) is fixedly mounted on the bottom of the mounting plate (2), a combustion tube (24) extending from the bottom of the furnace body (1) to the interior thereof is fixedly mounted on the output end of the burner (23), a heat radiation coating (3) is provided on the inner wall of the furnace body (1), and a stirring assembly for improving the lime combustion efficiency is also provided inside the furnace body (1); The stirring assembly comprises a first partition (5) fixedly mounted on the inner wall of the furnace body (1); a movable cover (7) which is rotatably mounted on the top of the first partition (5) and is in contact with the inner wall of the furnace body (1); a plurality of stirring rods (8) are fixedly mounted on the inner walls of both sides of the movable cover (7); a fixed cover (4) is also fixedly mounted on the inner wall of the furnace body (1); an auger rod (9) which extends into the interior of the fixed cover (4) is rotatably mounted on the top of the first partition (5); a second partition (6) is fixedly mounted on the lower surface of the auger rod (9); A first gear ring (14) is fixedly mounted on the inner wall of the cover (7) and located between the first partition plate (5) and the second partition plate (6); a second gear ring (12) is fixedly mounted on the surface of the auger rod (9) and located below the second partition plate (6); a motor (10) is fixedly mounted on the top of the mounting plate (2); a rotating shaft (11) extending into the interior of the furnace body (1) is fixedly mounted on the output end of the motor (10); a gear (13) meshing with both the first gear ring (14) and the second gear ring (12) is fixedly mounted on the top end of the rotating shaft (11).

2. An energy-saving combustion device for burning lime according to claim 1, characterized in that: The surfaces of the first partition plate (5) and the second partition plate (6) are both provided with a plurality of air holes, and the thermal radiation coating (3) is a high-radiation ceramic layer.

3. An energy-saving combustion device for burning lime according to claim 1, characterized in that: The top of the first partition plate (5) is provided with an annular sliding groove, and the bottom of the movable cover (7) is fixedly provided with a sliding block (26) rotatably connected to the inner wall of the sliding groove.

4. The energy-saving combustion device for burning lime according to claim 1, characterized in that: A sealing sleeve (27) extending into the interior is fixedly mounted on the bottom of the furnace body (1), and the rotating shaft (11) is rotatably connected to the inner wall of the sealing sleeve (27).

5. The energy-saving combustion device for burning lime according to claim 1, characterized in that: A material inlet (25) is fixedly mounted on the top of the furnace body (1), and a material taking door (15) is hingedly connected to the surface of the furnace body (1).

6. The energy-saving combustion device for burning lime according to claim 1, characterized in that: A preheating box (19) is fixedly mounted on one side of the mounting plate (2), and a preheating component for heat recovery is arranged outside the furnace body (1).

7. An energy-saving combustion device for burning lime according to claim 6, characterized in that: The preheating assembly comprises a fan (16) fixedly mounted on the top of the furnace body (1); an air inlet pipe (17) extending into the interior of the furnace body (1) is fixedly mounted on the air inlet end of the fan (16); and an air outlet pipe (18) extending into the interior of the preheating box (19) is fixedly mounted on the air outlet end of the fan (16).

8. An energy-saving combustion device for burning lime according to claim 6, characterized in that: A filter (20) is also fixedly mounted on one side of the preheating box (19), a connecting pipe (21) connected to the filter (20) is fixedly mounted on one side of the preheating box (19), and an exhaust pipe (22) is mounted at the output end of the filter (20).

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