Multilayer distributed feeding system in rotary kiln

Abstract

The utility model discloses a multilayer distributed feeding system in a rotary kiln, which relates to the technical field of rotary kilns, aims to solve the technical problem that coal and ferrotitanium powder cannot be conveyed layer by layer in proportion, and comprises a barrel, a top cover is mounted at the top of the barrel, a driving motor is fixed in the center of the top of the top cover, and a feeding hole is formed in one side of the top cover. The driving end of the driving motor is connected with a center rod, the center rod is provided with a layered screen, the layered screen divides the interior of the barrel into a coal area and a ferrotitanium powder area, a plurality of centrifugal turbines are installed on the periphery of the center rod, a base is arranged at the bottom of the center rod, and a plurality of proportional discharging modules are arranged in the area, close to the side, in the base. And a transmission module is arranged among the end parts of the plurality of proportional discharging modules. The central rod and the centrifugal turbine are driven by the driving motor to rotate, and materials are output according to a preset proportion by combining the matching of the proportional discharging module and the transmission module, so that the combustion speed of the coal materials is effectively controlled, and the conditions of energy waste and incomplete combustion are avoided.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and more specifically, to a multi-layer distributed feeding system for rotary kilns. Background Technology

[0002] In industrial production, rotary kilns are widely used in industries such as cement, steel, and chemicals for processes like calcination and roasting of materials. Taking a production process involving coal and ferrotitanium powder as an example, precisely controlling the input ratio of these two materials is crucial. However, currently, a common problem in rotary kiln operation is the inability to input coal and ferrotitanium powder in the predetermined ratio. This makes it difficult to control the coal combustion rate, sometimes too fast, resulting in energy waste; sometimes too slow, leading to incomplete combustion. Incomplete combustion not only reduces production efficiency and increases energy costs but also generates a large amount of unreacted waste gas and residue, causing environmental pollution. Therefore, we propose a multi-layer distributed feeding system for rotary kilns. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a multi-layer distributed feeding system in a rotary kiln to solve the current technical problem that coal and ferrotitanium powder cannot be transported in layers in proportion.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-layer distributed feeding system in a rotary kiln, including a cylinder, a top cover installed on the top of the cylinder, a drive motor fixed at the center of the top of the top cover, a feed port opened on one side of the top cover, a central rod connected to the drive end of the drive motor, a layered screen installed on the central rod, the layered screen dividing the cylinder into a coal area and an ferrite powder area, multiple centrifugal turbines installed on the outer periphery of the central rod, a base installed at the bottom of the central rod, multiple proportional discharge modules installed in the inner edge area of ​​the base, and a transmission module installed between the ends of the multiple proportional discharge modules.

[0005] Preferably, the proportional discharge module includes a circular cavity inside the base, the circular cavity having a circular cross-section, and discharge grooves penetrating the base being opened at the top and bottom of the circular cavity. A proportional wheel is fitted into the inner circumference of the circular cavity, and a conveying groove is opened on the outer circumference of the proportional wheel.

[0006] Preferably, the plurality of the proportional discharge modules are arranged in two ring arrays with the base as the center, and the proportional discharge modules in the rings of different diameters correspond to the amount of coal and ferrotitanium powder added. A transmission rod is connected between the centers of the two proportional wheels coaxial with the center of the base.

[0007] Preferably, the transmission module includes a driving bevel gear, and multiple transmission bevel gears mesh with the outer circumference of the driving bevel gear. The number and position of the transmission bevel gears correspond to the transmission rod, and one side of the transmission bevel gear is fixed to one end of the transmission rod.

[0008] Preferably, the bottom end of the central rod passes through the base, and a one-way bearing is fixed to the outer periphery of the bottom end of the central rod. The outer ring of the one-way bearing is connected to the top of the driving bevel gear.

[0009] Preferably, the outer periphery of the central rod is connected to a plurality of connecting rods, the ends of which are connected to the layered screen, and the outer periphery and inner wall of the bottom of the layered screen are both connected to discharge baffles.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model uses a drive motor to rotate the central rod and centrifugal turbine, which can effectively screen coal and ferrotitanium powder. Centrifugal force is used to place smaller particles on the outside and larger particles on the inside, realizing the layered storage of materials. The layered screen divides the inside of the cylinder into coal area and ferrotitanium powder area, laying the foundation for subsequent proportional output of materials. It helps to solve the problem that traditional rotary kilns cannot accurately control the material ratio and solve the problem that coal and ferrotitanium powder cannot be transported in a proportional layer.

[0012] 2. This utility model also controls the proportional size of the conveying trough and arranges the discharge modules of different proportions in a ring array to correspond to the amount of coal and ferro-titanium powder added. Multiple transmission rods drive the proportional wheel to rotate, so that the conveying trough periodically feeds upward and discharges downward, ensuring that the feeding ratio corresponds each time, thereby realizing the output of materials according to the predetermined ratio, and further solving the problem that coal and ferro-titanium powder cannot be conveyed in layers according to the ratio.

[0013] 3. This invention utilizes the characteristics of a one-way bearing to prevent the drive bevel gear from rotating during centrifugal material distribution, thus avoiding interference with the distribution process. When the central rod rotates in the reverse direction, it drives the drive bevel gear to rotate, which in turn drives multiple transmission bevel gears and proportional gears to rotate, achieving material output. By controlling the slow reverse rotation of the central rod through the speed control of the drive motor, the stability of material conveying is ensured, and the operating efficiency of the system is improved.

[0014] 4. This utility model effectively controls the coal combustion rate by precisely controlling the material input ratio, avoiding energy waste and incomplete combustion. It reduces the emission of unreacted waste gas and residue, lowers environmental pollution, improves production efficiency, and reduces energy costs, meeting the environmental protection and energy-saving requirements of industrial production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a half-sectional structural diagram of the middle cylinder of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the proportional discharge module in this utility model;

[0018] Figure 4 This is a half-sectional view of the base in this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure of the transmission module in this utility model.

[0020] The following are the labels in the diagram: 1. Cylinder; 2. Top cover; 3. Drive motor; 4. Feed inlet; 5. Center rod; 6. Connecting rod; 7. Layered screen; 8. Centrifugal turbine; 9. Base; 10. Proportional discharge module; 11. Transmission module; 12. Transmission rod; 13. Discharge baffle; 101. Circular cavity; 102. Discharge chute; 103. Proportional wheel; 104. Feed chute; 111. Drive bevel gear; 112. Transmission bevel gear. Detailed Implementation

[0021] like Figures 1 to 5 As shown, this utility model relates to a multi-layer distributed feeding system in a rotary kiln. The cylinder 1 is the main frame of the entire feeding system, made of high-strength, high-temperature resistant alloy steel, capable of withstanding high temperatures and material impact and wear. The top cover 2 is installed on the top of the cylinder 1 and is tightly connected by sealing rubber rings and bolts to ensure the system's airtightness, preventing material leakage and heat loss. A drive motor 3 is fixed at the center of the top of the top cover 2. The drive motor 3 is a high-performance variable frequency motor, featuring a wide speed range and stable operation, allowing for precise speed control according to different production needs. A feed inlet 4 is opened on one side of the top cover 2, connecting to an external material conveying pipeline. The cylinder 1 features a flared design to facilitate the smooth entry of materials. The drive end of the drive motor 3 is connected to the central rod 5, which is made of solid stainless steel and has high strength and rigidity. A layered screen 7 is set around the outer periphery of the central rod 5. The central rod 5 and the layered screen 7 are connected together by multiple connecting rods 6. The connecting rods 6 are made of high-strength aluminum alloy, which reduces the overall weight while ensuring the stability of the connection. The layered screen 7 is woven from stainless steel wire and has a suitable mesh size, which can effectively screen coal and ferrite powder. It divides the interior of the cylinder 1 into a coal area and a ferrite powder area, providing a spatial basis for subsequent layered storage of materials.

[0022] Multiple centrifugal turbines 8 are installed on the outer periphery of the central rod 5. The centrifugal turbines 8 are made of aerospace aluminum alloy and are precision cast and machined. Their blade shape is optimized and designed to generate strong centrifugal force when rotating at high speed. When the external control structure controls the drive motor 3 to run, it drives the central rod 5 to rotate, causing the multiple centrifugal turbines 8 to rotate accordingly. After the material enters the cylinder 1, it is thrown out at high speed under the action of the centrifugal turbines 8. Due to the different particle size and density of coal and ferro-titanium powder, the smaller particles are thrown to the outside, while the larger particles are placed on the inside, thereby achieving layered storage of materials.

[0023] Proportional feeding modules: Multiple proportional feeding modules 10 are arranged in the inner edge area of ​​the base 9. The base 9 is made of thick cast iron, which has good stability and load-bearing capacity. The proportional feeding modules 10 include a circular cavity 101 opened inside the base 9. The circular cavity 101 has a circular cross-section and is precision machined to ensure the smoothness of the inner wall. The circular cavity 101 has feeding grooves 102 that penetrate the base 9 at the top and bottom. The size of the feeding grooves 102 is precisely calculated to ensure that the material can pass through smoothly. A proportional wheel 103 is fitted into the inner circumference of the circular cavity 101. The proportional wheel 103 is made of wear-resistant engineering plastic. A conveying groove 104 is opened on the outer circumference. The multiple proportional feeding modules 10 are arranged in two ring arrays with the base 9 as the center, and different... The proportional discharge module 10 within the diameter ring corresponds to the amount of coal and ferrotitanium powder added. By controlling the proportional size of the conveying trough 104, the material is output according to a predetermined ratio. A transmission rod 12 is connected between the centers of two proportional wheels 103 coaxial with the center of the base 9. The transmission rod 12 is made of high-strength alloy steel to ensure the stability of the transmission. Under normal conditions, the conveying trough 104 faces upward, and the stratified material falls into the conveying trough 104 through the discharge trough 102. When multiple transmission rods 12 rotate, they drive the proportional wheels 103 to rotate, which in turn drives the conveying trough 104 to rotate. When the conveying trough 104 rotates downward, the material can be discharged; when it rotates upward, the material is fed again. Through this periodic action, the feeding ratio is ensured to be correct each time.

[0024] Transmission Module: A transmission module 11 is provided between the ends of multiple proportional discharge modules 10. The transmission module 11 includes a drive bevel gear 111 and multiple drive bevel gears 112. Both the drive bevel gear 111 and the drive bevel gears 112 are made of high-quality alloy steel, which has been quenched and ground to achieve high hardness and high precision. The outer circumference of the drive bevel gear 111 meshes with the multiple drive bevel gears 112. The number and position of the drive bevel gears 112 correspond to the transmission rod 12, and one side is fixed to one end of the transmission rod 12. The bottom end of the center rod 5 passes through the base 9, and a one-way bearing is fixed to the outer circumference of the bottom end. The ring is connected to the top of the active bevel gear 111. This design has important functional characteristics. When centrifugal material distribution is performed, the central rod 5 rotates in the forward direction, and the one-way bearing is in an idle state, which will not drive the active bevel gear 111 to rotate, thereby avoiding interference with the material screening process. When the central rod 5 rotates in the reverse direction, the one-way bearing locks, drives the active bevel gear 111 to rotate, and then drives multiple transmission bevel gears 112 to rotate, so that the conveying trough 104 rotates to output the material. In order to ensure stable material conveying, the speed control of the drive motor 3 is required during reverse rotation to make the central rod 5 rotate slowly.

[0025] Multiple connecting rods 6 are connected to the layered screen 7 at their ends. The outer periphery and inner wall of the bottom of the layered screen 7 are connected to discharge baffles 13. The discharge baffles 13 are made of wear-resistant rubber material, which has good flexibility and elasticity. During the discharge process, as the central rod 5 rotates, the discharge baffles 13 will rotate accordingly, thereby agitating the material on the bottom wall, preventing material from remaining at the bottom of the cylinder 1, and improving the utilization rate of the material.

[0026] This rotary kiln's multi-layer distributed feeding system, through its innovative structural design and ingenious working principle, achieves efficient material screening, layered storage, and proportional output. Its unique unidirectional bearing drive design avoids mutual interference between the material distribution and discharge processes, and the discharge baffle effectively prevents material residue. These advantages make this system highly valuable for industrial production, improving production efficiency, reducing energy consumption, ensuring product quality, and minimizing environmental pollution.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A multi-layer distributed feeding system for a rotary kiln, characterized in that, The device includes a cylinder (1), a top cover (2) installed on the top of the cylinder (1), a drive motor (3) fixed at the center of the top of the top cover (2), a feed inlet (4) on one side of the top cover (2), a central rod (5) connected to the drive end of the drive motor (3), a layered screen (7) provided on the central rod (5), the layered screen (7) dividing the inside of the cylinder (1) into a coal area and an ferrite powder area, multiple centrifugal turbines (8) installed on the outer periphery of the central rod (5), a base (9) provided at the bottom of the central rod (5), multiple proportional discharge modules (10) provided in the side area of ​​the inside of the base (9), and a transmission module (11) provided between the ends of the multiple proportional discharge modules (10).

2. The multi-layer distributed feeding system in a rotary kiln according to claim 1, characterized in that, The proportional discharge module (10) includes a circular cavity (101) opened inside the base (9). The circular cavity (101) has a circular cross section. The circular cavity (101) has discharge grooves (102) that pass through the base (9) at the top and bottom. A proportional wheel (103) is fitted into the inner circumference of the circular cavity (101). A conveying groove (104) is opened on the outer circumference of the proportional wheel (103).

3. The multi-layer distributed feeding system in a rotary kiln according to claim 2, characterized in that, Multiple proportional discharge modules (10) are arranged in two ring arrays with the base (9) as the center, and the proportional discharge modules (10) in the rings of different diameters correspond to the amount of coal and ferro-titanium powder added. A transmission rod (12) is connected between the centers of the two proportional wheels (103) coaxial with the center of the base (9).

4. A multi-layer distributed feeding system in a rotary kiln according to claim 3, characterized in that, The transmission module (11) includes an active bevel gear (111), and multiple transmission bevel gears (112) mesh with the outer periphery of the active bevel gear (111). The number and position of the transmission bevel gears (112) correspond to the transmission rod (12), and one side of the transmission bevel gear (112) is fixed to one end of the transmission rod (12).

5. A multi-layer distributed feeding system in a rotary kiln according to claim 4, characterized in that, The bottom end of the central rod (5) passes through the base (9), and a one-way bearing is fixed on the outer periphery of the bottom end of the central rod (5). The outer ring of the one-way bearing is connected to the top of the active bevel gear (111).

6. A multi-layer distributed feeding system in a rotary kiln according to claim 5, characterized in that, The center rod (5) is connected to a plurality of connecting rods (6) on its outer periphery. The ends of the plurality of connecting rods (6) are connected to the layered screen (7). The outer periphery and inner wall of the bottom of the layered screen (7) are both connected to discharge baffles (13).

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