Sectional type feeding device of rotary kiln

Abstract

The invention provides a rotary kiln sectional type feeding device which comprises a stock bin, a charging barrel capable of feeding materials into the stock bin is arranged at the top of the stock bin, a paddle shaft concentric with the charging barrel is rotatably arranged in the charging barrel, and at least one first paddle rod perpendicular to the paddle shaft is arranged on the outer wall of the paddle shaft. And a second paddle rod which can relatively move in the axial direction of the first paddle rod and is parallel to the paddle shaft is arranged on the first paddle rod. The action mechanism is triggered in the mode that the paddle shaft is driven to rotate, so that the second paddle rod moves in the axial direction of the first paddle rod in a reciprocating mode, and the feeding assembly can convey mineral aggregate in the stock bin into the kiln body in a segmented mode. According to the invention, mineral aggregates can be fully scattered before being calcined, so that material particles are uniformly distributed, and then the scattered mineral aggregates are conveyed into the kiln body in a segmented manner along the axial direction of the kiln body, so that the mineral aggregates can be uniformly distributed in the kiln body, the heating and reaction effects are ensured, and the production efficiency and the product quality are favorably improved.

Description

Technical Field

[0001] This invention relates to the field of rotary kiln technology, and more specifically to a segmented feeding device for rotary kilns. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Rotary kilns are thermal equipment widely used in industries such as cement, metallurgy, and chemicals. They require a continuous and stable supply of materials to the kiln during operation.

[0004] Currently, most rotary kilns use a single feeding point, which presents several problems: before being fed into the rotary kiln, the material may clump together in some areas, resulting in insufficient calcination when it enters the kiln. In addition, the material is often concentrated in one place when entering the rotary kiln, leading to uneven distribution within the kiln, which affects the heating and reaction of the material, thereby reducing production efficiency and product quality. Summary of the Invention

[0005] The main objective of this invention is to provide a segmented feeding device for rotary kilns.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a rotary kiln segmented feeding device includes a hopper, a material cylinder capable of feeding material into the top of the hopper, a paddle shaft concentric with the material cylinder is rotatably arranged inside the material cylinder, at least one first paddle rod perpendicular to the paddle shaft is arranged on the outer wall of the paddle shaft, and a second paddle rod parallel to the paddle shaft is arranged on the first paddle rod capable of moving relative to it in its axial direction. It also includes an actuation mechanism and a feeding assembly. The actuation mechanism is triggered by driving the paddle shaft to rotate, causing the second paddle to reciprocate along the axis of the first paddle. The feeding assembly can transfer the ore in the hopper to the kiln body in segments.

[0007] Furthermore, the actuation mechanism includes a disc fixed to the top wall of the inner cylinder, a propeller shaft passing through the disc and rotating relative to the disc, and a second limiting groove and a third limiting groove respectively arcuately opened at the bottom of the disc, the two ends of the second limiting groove communicating with the two ends of the third limiting groove respectively, and the curvature of the second limiting groove and the third limiting groove being different, and the top of the second propeller rod being able to slide and engage with the second limiting groove and the third limiting groove respectively; a first limiting groove is axially opened on the first propeller rod for the second propeller rod to move through.

[0008] Furthermore, a third propeller parallel to the second propeller is fixed on the outer wall of the end of the first propeller away from the propeller shaft. A rotating cylinder parallel to the first propeller is rotatably mounted on the third propeller. A connecting rod is inserted into one end of the rotating cylinder, and one end of the connecting rod is fixed on the outer wall of the second propeller. Multiple inclined fourth propellers are arranged circumferentially at the other end of the rotating cylinder. The connecting rod is driven by the second propeller to move axially back and forth relative to the rotating cylinder, so that the rotating cylinder reciprocates in its own circumferential direction.

[0009] Furthermore, the inner side of the rotating drum is provided with a spiral groove, and the outer wall of the connecting rod is provided with a protrusion that slides with the groove.

[0010] Furthermore, the inner side of the first propeller near its top is rotatably provided with a roller that can roll in cooperation with the sidewalls of the second and third limiting grooves. A first gear is concentrically fixed on the roller. A rotating shaft is concentrically inserted at the bottom of the first propeller. A second gear that cooperates with the first gear is provided at the top of the rotating shaft. Multiple inclined fifth propellers are circumferentially provided at the bottom of the rotating shaft.

[0011] Furthermore, a second motor is installed at the top of the barrel, and the output shaft of the second motor is connected to the top of the paddle shaft.

[0012] Furthermore, the material cylinder is provided with a guide plate, which separates the material dispersing chamber and the material storage chamber from top to bottom. The bottom of the paddle shaft is rotatably supported at the middle of the top of the guide plate. The top of the guide plate has a slope that sinks inward and is provided with a discharge hole.

[0013] Furthermore, a feed pipe is installed on the outside of the material cylinder, a discharge pipe connected to the storage chamber is installed at the bottom of the material cylinder, and a guide trough connected to the discharge pipe is provided at the top of the hopper.

[0014] Furthermore, the feeding assembly includes a feeding pipe arranged along the axial direction of the kiln body. One end of the feeding pipe is fixed inside the hopper and has a material inlet at the top for feeding ore. The other end extends into the kiln body. An auger parallel to its axial direction is rotatably arranged inside the feeding pipe. Several discharge pipes are arranged at equal intervals along its axial direction at the bottom of the feeding pipe.

[0015] Furthermore, a first motor is installed on the hopper, and the output shaft of the first motor is connected to the auger shaft.

[0016] The beneficial effects of this invention are reflected in: The rotary kiln segmented feeding device of the present invention can fully disperse the ore before calcination, so that the particles are evenly distributed. Then, the dispersed ore is transported to the kiln body in segments along the kiln body axis, which can make the ore evenly distributed in the kiln body, ensure the heating and reaction effect, and help improve production efficiency and product quality. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the device of the present invention; Figure 2 for Figure 1 A partial cross-sectional structural diagram of the central silo and feeding assembly; Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the central feed cylinder; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 for Figure 3 A schematic diagram of the distribution of the second and third limiting grooves on the middle plate body; Figure 6 for Figure 3 A partial cross-sectional structural diagram of the connecting rod extending axially into the rotating cylinder; Figure 7 for Figure 6 A schematic diagram of the groove distribution after the transfer cylinder is unfolded.

[0018] Explanation of reference numerals in the attached figures: 1. Kiln body; 2. Hopper; 3. Material cylinder; 4. Screw conveyor; 5. Discharge pipe; 6. Material inlet; 7. Guide chute; 8. Feed pipe; 9. Paddle shaft; 10. First paddle rod; 11. Second paddle rod; 12. First limiting groove; 13. Disc; 14. Second limiting groove; 15. Third limiting groove; 16. Feed pipe; 17. Connecting rod; 18. Rotary drum; 20. Groove; 21. Protrusion; 22. Third paddle rod; 23. Fourth paddle rod; 24. Roller; 25. First gear; 26. Second gear; 27. Rotating shaft; 28. Fifth paddle rod; 29. ​​Guide plate; 30. Feed hole; 31. First motor; 32. Second motor; 33. Feed pipe. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] Please combine Figures 1 to 7 .

[0021] A rotary kiln segmented feeding device includes a hopper 2. The top of the hopper 2 is provided with a feed cylinder 3 that can feed material into it. Inside the feed cylinder 3, a paddle shaft 9 concentric with it is rotatably provided. At least one first paddle rod 10 perpendicular to it is provided on the outer wall of the paddle shaft 9. A second paddle rod 11 that can move relative to it in its axial direction and is parallel to the paddle shaft 9 is provided on the first paddle rod 10. It also includes an actuation mechanism and a feeding assembly. The actuation mechanism is triggered by driving the paddle shaft 9 to rotate, so that the second paddle 11 moves back and forth axially in the first paddle 10. The feeding assembly can transfer the ore in the hopper 2 to the kiln body 1 in segments.

[0022] In practice, the ore in the feed cylinder 3 is first stirred and dispersed by driving the paddle shaft 9 to rotate. At the same time, the action mechanism is triggered, causing the second paddle 11 to reciprocate axially along the first paddle 10, increasing the contact and dispersion range of the ore, making the ore evenly distributed and ensuring more complete calcination. Subsequently, the ore is sent to the hopper 2, and the feeding assembly transports the ore in sections along the axial direction of the kiln body 1 into the kiln body 1, ensuring that the ore is evenly distributed within the kiln body 1 and ensuring effective heating and reaction.

[0023] The advantage of this design is that it allows the ore to be fully dispersed in the cylinder before calcination, resulting in uniform distribution of the particles. Then, the dispersed ore is transported in sections along the axial direction of the kiln body 1 into the kiln body 1, which ensures uniform distribution of the ore within the kiln body 1 and guarantees effective heating and reaction.

[0024] In one embodiment, the actuating mechanism includes a disc 13 fixed to the top wall of the inner wall of the cylinder 3, a propeller shaft 9 passing through the disc 13 and rotating relative to the disc 13, and a second limiting groove 14 and a third limiting groove 15 respectively arcuately formed at the bottom of the disc 13. The two ends of the second limiting groove 14 are respectively connected to the two ends of the third limiting groove 15, and the curvatures of the second limiting groove 14 and the third limiting groove 15 are different, with the curvature of the second limiting groove 14 being greater than that of the third limiting groove 15. The top of the second propeller 11 can slide and engage with the second limiting groove 14 and the third limiting groove 15 respectively; the first propeller 10 has a first limiting groove 12 axially formed on it for the second propeller 11 to move and pass through.

[0025] Thus, when the paddle shaft 9 rotates, it drives the first paddle rod 10 to rotate synchronously in the circumferential direction to disperse and stir the ore in the material cylinder 3. The second paddle rod 11 rotates synchronously with the first paddle rod 10, causing the top of the second paddle rod 11 to move continuously in the second limiting groove 14 and the third limiting groove 15. Since the curvatures of the second limiting groove 14 and the third limiting groove 15 are different, and the curvature of the second limiting groove 14 is greater than that of the third limiting groove 15, when the top of the second paddle rod 11 moves into the second limiting groove 14, the second paddle rod 11 moves away from the paddle shaft 9 on the first paddle rod 10. When the top of the second paddle rod 11 moves into the third limiting groove 15, the second paddle rod 11 moves closer to the paddle shaft 9 on the first paddle rod 10. This process is repeated to achieve the reciprocating movement of the second paddle rod 11 in the axial direction of the first paddle rod 10, increasing the contact and dispersion range of the material, making the material more evenly distributed, and ensuring more complete subsequent calcination.

[0026] In one embodiment, a third propeller 22 parallel to the second propeller 11 is fixed on the outer wall of the first propeller 10 away from the propeller shaft 9. A rotating cylinder 18 parallel to the first propeller 10 is rotatably mounted on the third propeller 22. A connecting rod 17 is inserted into one end of the rotating cylinder 18. One end of the connecting rod 17 is fixed on the outer wall of the second propeller 11. Multiple inclined fourth propellers 23 are circumferentially arranged at the other end of the rotating cylinder 18. The second propeller 11 drives the connecting rod 17 to move axially back and forth relative to the rotating cylinder 18, so that the rotating cylinder 18 reciprocates in its own circumferential direction.

[0027] Thus, when the second paddle 11 moves back and forth axially in the first paddle 10, it can drive the connecting rod 17 to move back and forth axially relative to the rotating drum 18, so that the rotating drum 18 drives the fourth paddle 23 to rotate back and forth in its own circumference, further increasing the contact and dispersing range of the material and improving the dispersing effect.

[0028] In one embodiment, a spiral groove 20 is axially formed on the inner side of the rotating cylinder 18, and a protrusion 21 that slides with the groove 20 is provided on the outer wall of the connecting rod 17.

[0029] Thus, when the second propeller 11 moves back and forth axially in the first propeller 10, it can drive the connecting rod 17 to move back and forth axially relative to the rotating cylinder 18, so that the protrusion 21 continuously rubs and squeezes the groove wall of the groove 20, forcing the rotating cylinder 18 to drive the fourth propeller 23 to rotate back and forth in its own circumference.

[0030] In one embodiment, a roller 24 is rotatably provided on the inner side of the first propeller 10 near its top, which can roll and engage with the sidewalls of the second limiting groove 14 and the third limiting groove 15. A first gear 25 is concentrically fixed on the roller 24. A rotating shaft 27 is concentrically inserted at the bottom of the first propeller 10. A second gear 26 that engages with the first gear 25 is provided at the top of the rotating shaft 27. A plurality of inclined fifth propellers 28 are circumferentially provided at the bottom of the rotating shaft 27.

[0031] Thus, when the top of the second paddle 11 moves in the second limiting groove 14 and the third limiting groove 15, the roller 24 rotates due to frictional engagement with the side walls of the second limiting groove 14 and the third limiting groove 15. The roller 24 then drives the first gear 25, the second gear 26, the rotating shaft 27, and the fifth paddle 28 to rotate synchronously, further increasing the contact and dispersing range of the material and further improving the dispersing effect.

[0032] In one embodiment, a second motor 32 is mounted on the top of the feed cylinder 3, and the output shaft of the second motor 32 is connected to the top of the paddle shaft 9. The second motor 32 may be a geared motor.

[0033] Thus, the output shaft of the second motor 32 can drive the propeller shaft 9 to rotate, providing driving force for each propeller bar to disperse and mix the ore.

[0034] In one embodiment, a guide plate 29 is provided inside the material cylinder 3, and a dispersing chamber and a storage chamber are formed by separating the material from top to bottom through the guide plate 29. The bottom of the paddle shaft 9 is rotatably supported at the middle of the top of the guide plate 29. The top of the guide plate 29 has a slope that sinks inward and is inclined downward. The guide plate 29 has a discharge hole 30.

[0035] In this way, the broken-up ore can converge towards the center from the top of the guide plate 29, and temporarily accumulate in the storage chamber through the discharge hole 30, and then be sent to the silo 2.

[0036] In one embodiment, a feed pipe 16 is installed on the outside of the material cylinder 3, a discharge pipe 8 communicating with the storage chamber is installed at the bottom of the material cylinder 3, and a guide groove 7 communicating with the discharge pipe 8 is provided at the top of the hopper 2.

[0037] Thus, the feed pipe 16 can transport the ore before it is dispersed into the dispersion chamber of the feed cylinder 3, and the discharge pipe 8 can transport the ore temporarily accumulated in the storage chamber to the guide trough 7, and then from the guide trough 7 to the feeding assembly.

[0038] In one embodiment, the feeding assembly includes a feeding pipe 33 arranged along the axial direction of the kiln body 1. One end of the feeding pipe 33 is fixed inside the hopper 2 and has a material inlet 6 for feeding ore at the top. The other end extends into the kiln body 1. An auger 4 parallel to its axial direction is rotatably arranged inside the feeding pipe 33. Several discharge pipes 5 are arranged at equal intervals along its axial direction at the bottom of the feeding pipe 33.

[0039] In this way, the ore falls directly into the inlet 6 via the feed chute 7, and is then transported in sections along the kiln body 1 by the screw conveyor 4 to various locations inside the kiln. It is then sent to various locations inside the kiln body 1 via the discharge pipe 5, so that the ore is evenly distributed inside the kiln body 1, ensuring the heating and reaction effect.

[0040] In one embodiment, a first motor 31 is installed on the hopper 2, and the output shaft of the first motor 31 is connected to the auger shaft of the auger 4. The first motor 31 may be a geared motor.

[0041] Thus, the output shaft of the first motor 31 can drive the auger 4 to rotate, providing driving force for the segmented transmission of ore into the kiln body 1.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0043] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A segmented feeding device for a rotary kiln, characterized in that, Includes a hopper (2), the top of the hopper (2) is provided with a material cylinder (3) that can feed material into it, the material cylinder (3) is rotatably provided with a propeller shaft (9) concentric with it, the outer wall of the propeller shaft (9) is provided with at least one first propeller rod (10) perpendicular to it, the first propeller rod (10) is provided with a second propeller rod (11) that can move relative to it in its axial direction and is parallel to the propeller shaft (9); It also includes an action mechanism and a feeding assembly. The action mechanism is triggered by driving the paddle shaft (9) to rotate, so that the second paddle (11) moves back and forth in the axial direction of the first paddle (10). The feeding assembly can transfer the ore in the hopper (2) to the kiln body (1) in segments.

2. The rotary kiln segmented feeding device as described in claim 1, characterized in that, The actuation mechanism includes a disc (13) fixed to the top wall of the inner cylinder (3), a propeller shaft (9) passing through the disc (13) and rotating relative to the disc (13), and a second limiting groove (14) and a third limiting groove (15) respectively arc-shaped on the bottom of the disc (13). The two ends of the second limiting groove (14) are respectively connected to the two ends of the third limiting groove (15), and the curvatures of the second limiting groove (14) and the third limiting groove (15) are different. The top of the second propeller (11) can slide and engage with the second limiting groove (14) and the third limiting groove (15) respectively. The first propeller (10) is axially provided with a first limiting groove (12) through which the second propeller (11) moves.

3. The rotary kiln segmented feeding device as described in claim 2, characterized in that, A third propeller (22) parallel to the second propeller (11) is fixed on the outer wall of the end of the first propeller (10) away from the propeller shaft (9). A rotating cylinder (18) parallel to the first propeller (10) is rotatably mounted on the third propeller (22). A connecting rod (17) is inserted into one end of the rotating cylinder (18). One end of the connecting rod (17) is fixed on the outer wall of the second propeller (11). Multiple inclined fourth propellers (23) are arranged circumferentially at the other end of the rotating cylinder (18). The connecting rod (17) is driven by the second propeller (11) to move axially back and forth relative to the rotating cylinder (18), so that the rotating cylinder (18) rotates back and forth in its own circumferential direction.

4. The rotary kiln segmented feeding device as described in claim 3, characterized in that, The inner side of the rotating drum (18) is provided with a spiral groove (20) and the outer wall of the connecting rod (17) is provided with a protrusion (21) that slides with the groove (20).

5. The rotary kiln segmented feeding device as described in claim 2, characterized in that, The first propeller (10) has a roller (24) rotatably mounted on its inner side near its top, which can roll into the side wall of the second limiting groove (14) and the side wall of the third limiting groove (15). A first gear (25) is concentrically fixed on the roller (24). A rotating shaft (27) is concentrically inserted at the bottom of the first propeller (10). A second gear (26) that engages with the first gear (25) is mounted on the top of the rotating shaft (27). Multiple inclined fifth propellers (28) are circumferentially mounted at the bottom of the rotating shaft (27).

6. The rotary kiln segmented feeding device as described in claim 1, characterized in that, The top of the material cylinder (3) is equipped with a second motor (32), and the output shaft of the second motor (32) is connected to the top of the paddle shaft (9).

7. The rotary kiln segmented feeding device as described in claim 1, characterized in that, The material cylinder (3) is provided with a guide plate (29) inside, and the guide plate (29) separates the material dispersing chamber and the material storage chamber from top to bottom. The bottom of the paddle shaft (9) is rotatably supported at the middle of the top of the guide plate (29). The top of the guide plate (29) has a slope that sinks inward. The guide plate (29) has a discharge hole (30).

8. The rotary kiln segmented feeding device as described in claim 7, characterized in that, The feed pipe (16) is installed on the outside of the feed cylinder (3), and the discharge pipe (8) connected to the storage chamber is installed at the bottom of the feed cylinder (3). The top of the hopper (2) has a guide groove (7) connected to the discharge pipe (8).

9. The rotary kiln segmented feeding device as described in claim 1, characterized in that, The feeding assembly includes a feeding pipe (33) arranged along the axial direction of the kiln body (1). One end of the feeding pipe (33) is fixed inside the hopper (2) and has a material inlet (6) for feeding ore at the top. The other end extends into the kiln body (1). An auger (4) parallel to its axial direction is rotatably arranged inside the feeding pipe (33). Several discharge pipes (5) are arranged at equal intervals along its axial direction at the bottom of the feeding pipe (33).

10. The rotary kiln segmented feeding device as described in claim 9, characterized in that, The hopper (2) is equipped with a first motor (31), and the output shaft of the first motor (31) is connected to the auger shaft (4).

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