Quantitative feeding device for limestone calcination
By using a quantitative discharger and vibrating screen in the limestone calcination device, the problem of uneven heat exposure of limestone is solved, and uniform calcination and efficient production of limestone are achieved.
Patent Information
- Application Number
- CN202422103066.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In the existing limestone calcining devices, the traditional feeding method causes uneven heat of limestone, which affects the calcining efficiency and product quality.
A quantitative discharger is used, including a feeding box, a feeding roller and a vibrating screen, to ensure that the limestone enters the calciner at a uniform quantity, avoids accumulation, and achieves uniform distribution through the rotation of the feeding roller.
The calcination efficiency of limestone and the quality of lime products are improved, ensuring that limestone is uniformly heated in the calciner, and avoiding the problems of accumulation and uneven heat.
Smart Images
Figure CN223154014U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of calcium oxide preparation, in particular to a quantitative feeding device for limestone calcination. Background Art
[0002] Active lime, also known as quicklime, is calcined from limestone (calcium carbonate) and is a raw material widely used in industries such as construction, chemical industry, calcium carbide, and metallurgy. At present, limestone calcination devices mainly include vertical kilns and rotary kilns. Vertical kilns have been widely used due to their advantages such as low cost, simple structure, and convenient operation.
[0003] In the existing lime calcination furnace during the calcination process, the traditional feeding method often relies on manual operation and it is difficult to accurately control the feeding weight. Usually, limestone blocks are directly poured into the calcination furnace. Since the limestone blocks are directly poured into the calcination furnace and often stacked together, it causes uneven heating of limestone during the calcination process. The limestone near the furnace wall or directly irradiated by the flame is heated faster, while the limestone stacked inside is heated slower and may not even reach the temperature required for complete decomposition. This uneven heating may cause some limestone to not be fully decomposed, affecting the quality of the final product. In addition, due to the uneven heating of limestone, some limestone fails to fully react during the calcination process, resulting in low calcination efficiency. Summary of the Utility Model
[0004] In view of the above situation, to overcome the defects of the prior art, the utility model provides a quantitative feeding device for limestone calcination, which effectively solves the problems of low calcination efficiency of limestone and poor quality of lime products due to feeding problems during the calcination of limestone through this design.
[0005] To achieve the above object, the utility model provides the following technical solutions: The utility model includes a base, a calcination furnace is rotatably connected inside the base, a feed pipe is rotatably connected to the upper side of the calcination furnace, the feed pipe is fixedly connected to the base, a wind cap pipe is fixedly connected to the upper end of the feed pipe, a feed hopper is arranged on the side of the feed pipe, and a quantitative feeder is installed between the feed hopper and the feed pipe;
[0006] The quantitative feeder includes a feeding box, the feeding box is fixedly connected to the feed pipe, the feeding box includes a storage chamber and a blanking chamber, a feeding roller is arranged between the storage chamber and the blanking chamber, the feeding roller is rotatably connected to the feeding box, and a storage groove is arranged inside the feeding roller.
[0007] Preferably, a dust-proof plate is fixedly connected to the upper end of the feeding box, a blocking curtain is rotatably connected to the front side of the dust-proof plate, and the blocking curtain is located at the connection between the feed hopper and the feeding box.
[0008] Preferably, the bottom of the feed hopper is inclined, a vibrating screen is installed in the feeding box, the vibrating screen is located above the material discharging roller, and the horizontal height of the vibrating screen is lower than the bottom surface of the feed hopper.
[0009] Preferably, sliding blocks are fixedly connected to both sides of the vibrating screen, sliding grooves for the sliding blocks to slide are provided on the feeding box, guide rods are fixedly connected in the sliding grooves, the guide rods are slidably connected with the sliding blocks, and springs are sleeved on the guide rods on both sides of the sliding blocks.
[0010] Preferably, a connecting pin is fixedly connected to the sliding block, a dial is fitted on one side of the connecting pin, the dial is rotatably connected with the feeding box, and a driving member for driving the dial and the material discharging roller to rotate synchronously is provided outside the dial.
[0011] Preferably, the driving member includes a driving belt pulley, a first belt pulley, a second belt pulley and a connecting belt. The first belt pulley is fixedly connected with the material discharging roller, the second belt pulley is fixedly connected with the dial, a driving motor is installed on the driving belt pulley, and the connecting belt is sleeved on the first belt pulley, the second belt pulley and the driving belt pulley.
[0012] Compared with the prior art, the outstanding advantages of the present utility model are:
[0013] In the present utility model, a material discharging roller is added in the feeding box, the size of the material discharging groove in the material discharging roller is fixed, and with the rotation of the material discharging roller, the limestone entering the calcining furnace each time is a fixed quantity. With the rotation of the calcining furnace, the fixed quantity of limestone can be put at different positions in the calcining furnace, avoiding the accumulation of limestone in the calcining furnace, ensuring that the limestone inside is evenly heated, and improving the calcining efficiency and the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0015] Figure 2 It is a schematic diagram of the connection structure of the feeding box of the present utility model.
[0016] Figure 3 It is a schematic diagram of the left sectional structure of the base of the present utility model.
[0017] Figure 4 It is a schematic diagram of the connection structure of the material discharging roller of the present utility model.
[0018] Figure 5 It is a schematic diagram of the connection structure of the dial of the present utility model.
[0019] Figure 6 It is a schematic diagram of the left side structure of the feeding box of the present utility model.
[0020] Reference numerals in the figure: 1, base; 2, calciner; 3, feed pipe; 4, air cap pipe; 5, feed hopper; 6, feeding box; 7, storage cavity; 8, blanking cavity; 9, discharging roller; 10, storage tank; 11, dust-proof plate; 12, vibrating screen; 13, slider; 14, guide rod; 15, spring; 16, connecting pin; 17, dial; 18, driving pulley; 19, first pulley; 20, second pulley; 21, connecting belt. Detailed implementation manner
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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.
[0022] Please refer to the attached Figures 1-6 , a quantitative feeding device for limestone calcination in this embodiment: comprising a base 1, a calciner 2 is rotatably connected in the base 1, a feed pipe 3 is rotatably connected to the upper side of the calciner 2, the feed pipe 3 is fixedly connected to the base 1, an air cap pipe 4 is fixedly connected to the upper end of the feed pipe 3, a feed hopper 5 is arranged on the side of the feed pipe 3, a quantitative feeder is installed between the feed hopper 5 and the feed pipe 3, the quantitative feeder includes a feeding box 6, the feeding box 6 is fixedly connected to the feed pipe 3, the feeding box 6 includes a storage cavity 7 and a blanking cavity 8, a discharging roller 9 is arranged between the storage cavity 7 and the blanking cavity 8, the discharging roller 9 is rotatably connected to the feeding box 6, and a storage tank 10 is arranged in the discharging roller 9.
[0023] The calciner 2 is located inside the base 1. The calciner 2 is vertically placed. The feeding pipe is located above the calciner 2, and the air cap pipe 4 is located above the feeding pipe. The flue gas generated by the combustion of the calciner 2 is discharged outward from the air cap pipe 4. The metering discharger is located on one side of the feeding pipe. The feeding pipe is connected to the feeding box 6. The feeding box 6 is divided into a storage chamber 7 and a blanking chamber 8. The blanking chamber 8 is connected to the feeding pipe through a bracket. Above the blanking chamber 8 is the discharging roller 9. The periphery of the discharging roller 9 is in close contact with the inner wall of the feeding box 6. Above the discharging roller 9 is the storage chamber 7. The storage chamber 7 is connected to the feed hopper 5. The limestone entering the feed hopper 5 enters the storage chamber 7 from the outlet of the feed hopper 5. The limestone in the storage chamber 7 enters the storage groove 10 of the discharging roller 9 under the action of gravity. When the storage groove 10 is filled, as the discharging roller 9 rotates, the discharging roller 9 rotates the limestone in the storage groove 10 downward. When the opening of the storage groove 10 faces downward, the limestone falls into the blanking chamber 8 under the action of gravity. The limestone in the blanking chamber 8 rolls into the feed pipe 3 under the action of gravity and drops into the calciner 2 from the feed pipe 3 for calcination. Through the single-dose feeding of the feed pipe 3, it is ensured that the limestone in the calciner 2 does not accumulate in one place, so that the limestone is dispersed throughout the calciner 2, improving the calcination efficiency of the limestone. The storage groove 10 is of a V-shaped structure, and the opening of the storage groove 10 is relatively large, which can allow the limestone to enter the storage groove 10 and at the same time prevent the limestone from getting stuck in the storage groove 10.
[0024] The dust-proof plate 11 is located above the feeding box 6. There will be dust when the limestone rolls down in the feed hopper 5. In order to reduce the dust, a dust-proof plate 11 and a curtain are respectively provided at the upper part of the feeding box 6 and the feeding port of the feeding box 6, so as to control the dust inside the feeding box 6 and prevent the dust from overflowing outward.
[0025] Limestone is the main raw material for shaft kiln calcination, and its quality directly affects the quality of lime products. In order to ensure the quality of lime products, before the limestone enters the feed hopper 5, there is a crushing process. After the lime is crushed, due to the different particle sizes, the limestone with a large volume difference will affect the quality of lime products after calcination. In order to improve the quality of lime products, a vibrating screen 12 is installed in the feeding box 6. The vibrating screen 12 can filter the limestone with similar particle sizes into the storage bin, so as to ensure that the particle sizes of the limestone entering the calciner 2 are similar and ensure the quality of lime products. In order to make the limestone in the feed hopper 5 enter the feeding box 6 better, the bottom of the feed hopper 5 inclines towards the feeding box 6, and the limestone can roll towards the feeding box 6 faster.
[0026] To prevent the sieve holes of the vibrating screen from being blocked by limestone, a vibrator and a slider 13 are installed on the vibrating screen. The slider 13 can slide left and right in the chute. A connecting pin 16 is provided on the outer side of the slider 13. The cooperation between the connecting pin 16 and the rotating dial 17 can drive the slider 13 to slide left and right in the chute. At the same time, the springs 15 on the guide rods 14 on both sides of the slider 13 have a rebounding effect on the movement of the slider 13, causing the slider 13 to drive the vibrating screen to move in the left and right directions. Coupled with the action of the vibrator on the vibrating screen 12, the sieve holes of the vibrating screen 12 can be prevented from being blocked, and the material dropping rate of the vibrating screen 12 can be increased.
[0027] Both the dial 17 and the feeding roller 9 are driven by a drive motor. A drive pulley 18 is installed on the drive motor. Under the action of the connecting belt 21, the drive pulley 18 drives the first pulley 19 and the second pulley 20 to move synchronously. The rotation of the feeding roller 9 is driven by the first pulley 19, and the rotation of the dial 17 is driven by the second pulley 20.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. 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. A quantitative feeding device for limestone calcination, characterized in that: It includes a base (1), a calcining furnace (2) is rotatably connected inside the base (1), a feed pipe (3) is rotatably connected to the upper side of the calcining furnace (2), the feed pipe (3) is fixedly connected to the base (1), a wind cap pipe (4) is fixedly connected to the upper end of the feed pipe (3), a feed hopper (5) is arranged on the side of the feed pipe (3), and a metering feeder is installed between the feed hopper (5) and the feed pipe (3); The metering feeder includes a feeding box (6), the feeding box (6) is fixedly connected to the feed pipe (3), the feeding box (6) includes a storage chamber (7) and a blanking chamber (8), a feeding roller (9) is arranged between the storage chamber (7) and the blanking chamber (8), the feeding roller (9) is rotatably connected to the feeding box (6), and a storage groove (10) is arranged inside the feeding roller (9).
2. The quantitative feeding device for limestone calcination according to claim 1, wherein: A dust-proof plate (11) is fixedly connected to the upper end of the feeding box (6), a curtain is rotatably connected to the front side of the dust-proof plate (11), and the curtain is located at the connection between the feed hopper (5) and the feeding box (6).
3. The quantitative feeding device for limestone calcination according to claim 1, characterized in that: The bottom of the feed hopper (5) is inclined, a vibrating screen (12) is installed inside the feeding box (6), the vibrating screen (12) is located above the feeding roller (9), and the horizontal height of the vibrating screen is lower than the bottom surface of the feed hopper (5).
4. The quantitative feeding device for limestone calcination according to claim 3, characterized in that: Sliders (13) are fixedly connected to both sides of the vibrating screen (12), sliding grooves for the sliders (13) to slide are arranged on the feeding box, guide rods (14) are fixedly connected inside the sliding grooves, the guide rods (14) are slidably connected to the sliders (13), and springs (15) are sleeved on the guide rods (14) on both sides of the sliders (13).
5. The quantitative feeding device for limestone calcination according to claim 4, characterized in that: A connecting pin (16) is fixedly connected to the slider (13), a dial (17) is engaged with one side of the connecting pin (16), the dial (17) is rotatably connected to the feeding box (6), and a driving member for driving the dial (17) and the feeding roller (9) to rotate synchronously is arranged outside the dial (17).
6. The quantitative feeding device for limestone calcination according to claim 5, characterized in that: The driving member includes a driving belt pulley (18), a first belt pulley (19), a second belt pulley (20) and a connecting belt (21), the first belt pulley (19) is fixedly connected to the feeding roller (9), the second belt pulley (20) is fixedly connected to the dial (17), a driving motor is installed on the driving belt pulley (18), and the connecting belt (21) is sleeved on the first belt pulley (19), the second belt pulley (20) and the driving belt pulley (18).