Anti-coking device for rotary kiln

Abstract

The invention discloses a rotary kiln anti-coking device, and relates to the technical field of rotary kilns, the rotary kiln anti-coking device comprises a kiln cylinder and a power assembly, the inner side of the kiln cylinder is provided with a tooth groove, the power assembly is arranged on one side of the tooth groove, the power assembly comprises a bottom frame, the bottom frame is arranged on one side of the tooth groove, and one side of the bottom frame is rotatably connected with a driving wheel; a driving wheel is connected to one side of the driving wheel, a base is arranged in the middle of the bottom frame, a transmission wheel is arranged on one side of the base, a cavity is formed in the middle of the base, a cam plate is arranged in the cavity, and shaft rods are connected to the two sides of the cam plate. When the device is used, external power is not needed, the device can be driven by the rotary kiln to operate, in the operation process of the rotary kiln, the device can be driven by the kiln body to rotate reversely, a coking layer generated on the inner wall of the kiln body is scraped, the scraper is automatically cleaned in the scraping process, coking objects are prevented from being attached to the scraper, and the device is convenient to use. The service life of the scraper is shortened, and the scraping effect of a coking layer is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary kilns, and specifically relates to an anti-coking device for a rotary kiln. Background Art

[0002] The problem of coking in the rotary kiln incinerator is mainly caused by different ash melting points of different combustion materials, improper control of the rotary kiln speed and oxygen content, etc. Once the combustion temperature of the material exceeds its own ash melting point, it will melt and cause coking; currently, to solve the coking problem during the incineration of materials in the rotary kiln, it depends on the specific situation during the incineration of the materials. For different properties of materials, control the combustion temperature in the kiln, the rotary kiln speed, control the oxygen content, and effective ash cleaning measures. Therefore, it is necessary to clean the inside of the rotary kiln to prevent coking problems from occurring inside the rotary kiln.

[0003] For example, the utility model with the application number CN219415776U discloses an anti-coking device for a rotary kiln. This anti-coking device for a rotary kiln of the utility model can clean the blade part of the scraper, reducing the cleaning difficulty of the blade part of the scraper. However, when this utility model is in use, it needs to drive the internal structure to move through a motor. However, when operating in a high-temperature environment for a long time, the life of the motor may be shortened, and it is necessary to maintain and replace the motor components more frequently. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-coking device for a rotary kiln to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An anti-coking device for a rotary kiln, including a kiln barrel and a power assembly. A tooth groove is arranged inside the kiln barrel, and the power assembly is arranged on one side of the tooth groove. The power assembly includes a bottom frame. A bottom frame is arranged on one side of the tooth groove, and a driving wheel is rotatably connected to one side of the bottom frame. A driving wheel is connected to a driving wheel on one side, a base is arranged in the middle of the bottom frame, and a transmission wheel is arranged on one side of the base. A cavity is arranged in the middle of the base, and a cam plate is arranged in the cavity. Shaft rods are connected to both sides of the cam plate.

[0006] Further, the driving wheel meshes with the tooth groove, and the transmission wheel meshes with the driving wheel. The shaft rod is connected to the bottom frame, and the base is rotatably connected to the bottom frame through the shaft rod.

[0007] Further, a feeding groove is arranged at the lower part of the bottom frame, and a feeding port is opened on one side of the feeding groove. A feeding rod is rotatably connected in the feeding groove, and crushing rods are arranged around the feeding rod.

[0008] Further, the feeding rod is connected to the driving wheel through a sprocket and a chain, and the crushing rods are symmetrically distributed about the feeding rod. A propeller blade is arranged outside the feeding rod, and the crushing rod is connected to the blade.

[0009] Further, an installation groove is formed on the surface of the base, and a sliding groove is formed in the middle of the installation groove. An installation frame is connected in the installation groove, and a sliding opening is formed in the middle of the installation frame.

[0010] Further, a reset spring is symmetrically connected in the installation frame, and a scraping knife is connected to one end of the reset spring. A top plate is connected to the middle of the scraping knife, and one end of the top plate is located in the cavity.

[0011] Further, the scraping knife is slidably connected to the installation frame, and the scraping knife is elastically connected to the installation frame through the reset spring. The top plate is slidably connected to the installation frame by engaging with the sliding opening, and the top plate surrounds the outside of the cam plate.

[0012] Further, support rods are symmetrically connected to both sides of the base, and a bracket is connected between the support rods. Through holes are formed on the surface of the bracket.

[0013] Further, cleaning springs are symmetrically connected to one side of the bracket, and a scraping strip is connected to one end of the cleaning spring. Limiting rods are symmetrically connected to the surface of the scraping strip.

[0014] Further, the limiting rods are slidably connected to the bracket by engaging with the through holes, and the scraping strip is elastically connected to the bracket through the cleaning spring. The scraping strip is closely attached to the surface of the scraping knife. Both the cleaning spring and the reset spring are made of high-temperature resistant materials.

[0015] The present invention provides a rotary kiln anti-coking device, which has the following beneficial effects: during use, without setting external power, the device can be driven by the rotary kiln to operate. During the operation of the rotary kiln, it can be driven to rotate in the reverse direction by the kiln body, the coking layer generated on the inner wall of the kiln is scraped off, and the scraping knife is automatically cleaned during the scraping process, avoiding the adhesion of coking substances on the scraping knife, reducing the service life of the scraping knife, and reducing the scraping effect of the coking layer.

[0016] 1. When the present invention is in use, without setting external power, only by fixing both ends of the device on both sides of the kiln barrel respectively, the kiln barrel can drive the device to operate. During the operation of the rotary kiln, through the design of the gear set, the base can be driven by the kiln barrel to rotate in the reverse direction, so that the movement direction of the scraping knife is opposite to that of the kiln barrel, improving the scraping effect of the coking layer. Without a motor or a hydraulic system, the risk of failure of high-temperature electronic components is avoided.

[0017] 2. When the base drives the scraping knife to move, the cam plate can drive the scraping knife to move through the top plate, so that when the scraping knife moves above the bottom frame, the top plate can drive the scraping knife to approach the inner wall of the kiln barrel, thereby cleaning the coking layer. Then, the scraping knife can gradually move away from the inner wall of the kiln barrel during the reset process, avoiding scratching the inner wall of the kiln barrel. And during the downward movement of the scraping knife, the coking substances scraped off can also be thrown off by centrifugal force.

[0018] 3. During the reset process of the scraper of the present invention, the scraping strip can clean the scraper, preventing the unthrown coking substances from adhering to the scraper, reducing the service life of the scraper, and decreasing the scraping effect of the coking layer. The coking substances removed from the scraper can be collected by the bottom frame, and the feeding rod and the crushing rods distributed around it can crush the coking substances and discharge them from the bottom frame after crushing, preventing the coking substances from clogging and accumulating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall half-sectional three-dimensional structure of an anti-coking device for a rotary kiln according to the present invention; Figure 2 is a schematic diagram of the half-sectional three-dimensional exploded structure of the bottom frame of an anti-coking device for a rotary kiln according to the present invention; Figure 3 is a schematic diagram of the half-sectional three-dimensional exploded structure of the base of an anti-coking device for a rotary kiln according to the present invention; Figure 4 is a schematic diagram of the overall sectional three-dimensional structure of an anti-coking device for a rotary kiln according to the present invention; Figure 5 is a schematic diagram of the overall sectional side view structure of an anti-coking device for a rotary kiln according to the present invention; Figure 6 is a schematic diagram of the overall three-dimensional structure of an anti-coking device for a rotary kiln according to the present invention.

[0020] In the figure: 1, kiln barrel; 2, tooth groove; 3, power assembly; 301, bottom frame; 302, driving wheel; 303, driving gear; 304, base; 305, transmission wheel; 306, cavity; 307, cam plate; 308, shaft rod; 4, feeding chute; 5, feeding port; 6, feeding rod; 7, crushing rod; 8, installation groove; 9, sliding groove; 10, installation frame; 11, sliding port; 12, return spring; 13, scraper; 14, top plate; 15, support rod; 16, bracket; 17, through hole; 18, cleaning spring; 19, scraping strip; 20, limiting rod. DETAILED DESCRIPTION OF THE INVENTION

[0021] Please refer to Figures 1 to 6 , the present invention provides a technical solution: an anti-coking device for a rotary kiln, including a kiln barrel 1 and a power assembly 3. A tooth groove 2 is arranged inside the kiln barrel 1, and the power assembly 3 is arranged on one side of the tooth groove 2. The power assembly 3 includes a bottom frame 301. The bottom frame 301 is arranged on one side of the tooth groove 2, and a driving wheel 302 is rotatably connected to one side of the bottom frame 301. A driving gear 303 is connected to one side of the driving wheel 302. A base 304 is arranged in the middle of the bottom frame 301, and a transmission wheel 305 is arranged on one side of the base 304. A cavity 306 is arranged in the middle of the base 304, and a cam plate 307 is arranged in the cavity 306. Shaft rods 308 are connected to both sides of the cam plate 307.

[0022] Please refer toFigures 1 to 6 The driving wheel 302 meshes with the tooth groove 2, and the transmission wheel 305 meshes with the driving wheel 302. The shaft rod 308 is connected to the bottom frame 301, and the base 304 is rotatably connected to the bottom frame 301 through the shaft rod 308. A feeding groove 4 is provided at the lower part of the bottom frame 301, and a feeding port 5 is provided on one side of the feeding groove 4. A feeding rod 6 is rotatably connected in the feeding groove 4, and crushing rods 7 are arranged around the feeding rod 6. The feeding rod 6 is connected to the driving wheel 303 through a sprocket and a chain, and the crushing rods 7 are symmetrically distributed with respect to the feeding rod 6. A propeller blade is arranged outside the feeding rod 6, and the crushing rod 7 is connected to the blade; The specific operation is as follows. When in use, no external power needs to be set. Just fix both ends of the device on both sides of the kiln barrel 1, and the kiln barrel 1 can drive the device to operate. During the operation of the rotary kiln, through the design of the gear set, the base 304 can be driven by the kiln barrel 1 to rotate in the opposite direction, so that the scraper 13 moves in the opposite direction to the movement direction of the kiln barrel 1, improving the scraping effect of the coking layer. No motor or hydraulic system is required, avoiding the risk of failure of high-temperature electronic components.

[0023] Please refer to Figure 1 and Figures 3 to 5 On the surface of the base 304, an installation groove 8 is provided, and a sliding groove 9 is provided in the middle of the installation groove 8. An installation frame 10 is connected in the installation groove 8, and a sliding opening 11 is provided in the middle of the installation frame 10. Reset springs 12 are symmetrically connected in the installation frame 10, and one end of each reset spring 12 is connected to a scraper 13. A top plate 14 is connected to the middle of the scraper 13, and one end of the top plate 14 is located in the cavity 306. The scraper 13 is slidably connected to the installation frame 10, and the scraper 13 is elastically connected to the installation frame 10 through the reset spring 12. The top plate 14 is engaged and slidably connected to the installation frame 10 through the sliding opening 11, and the top plate 14 surrounds the outside of the cam plate 307. Support rods 15 are symmetrically connected to both sides of the base 304, and a bracket 16 is connected between the support rods 15. Through holes 17 are provided on the surface of the bracket 16. Cleaning springs 18 are symmetrically connected to one side of the bracket 16, and one end of each cleaning spring 18 is connected to a scraping strip 19. Limiting rods 20 are symmetrically connected to the surface of the scraping strip 19. The limiting rods 20 are engaged and slidably connected to the bracket 16 through the through holes 17, and the scraping strip 19 is elastically connected to the bracket 16 through the cleaning spring 18. The scraping strip 19 is closely attached to the surface of the scraper 13. The cleaning spring 18 and the reset spring 12 are both made of high-temperature resistant materials; The specific operation is as follows. When the base 304 drives the scraper 13 to move, the cam plate 307 can drive the scraper 13 to move through the top plate 14, so that when the scraper 13 moves above the bottom frame 301, the top plate 14 can drive the scraper 13 to approach the inner wall of the kiln barrel 1, thereby cleaning the coking layer. Then, during the reset process of the scraper 13, it can gradually move away from the inner wall of the kiln barrel 1 to avoid scratching the inner wall of the kiln barrel 1. Moreover, during the downward movement of the scraper 13, the coking materials scraped off can also be thrown off by centrifugal force. During the reset process of the scraper 13, the scraping strip 19 can clean the scraper 13 to prevent the coking materials that have not been thrown off from adhering to the scraper 13, reducing the service life of the scraper 13 and the scraping effect of the coking layer. The coking materials removed from the scraper 13 can be collected by the bottom frame 301, and the feeding rod 6 and the crushing rods 7 distributed around it can crush the coking materials and discharge them from the bottom frame after crushing to avoid blockage and accumulation of the coking materials.

[0024] In summary, for the rotary kiln anti-coking device, during use, first fix both ends of the bottom frame 301 on both sides of the kiln barrel 1, and make the driving wheel 302 engage with the tooth groove 2. At the same time, adjust the position of the bottom frame 301 so that there is a gap between the scraper 13 and the inner wall of the kiln barrel 1 in the non-working state to avoid idling wear. When the rotary kiln is running, the tooth groove 2 can drive the driving wheel 302 and the driving wheel 303 to rotate synchronously with the kiln barrel 1. Then, the driving wheel 305 drives the base 304 to rotate within the bottom frame 301, and the rotation direction of the base 304 is opposite to that of the kiln barrel 1. At this time, the base 304 drives the mounting frame 10 in the mounting groove 8 to move, thereby driving the scraper 13 and the top plate 14 to move synchronously. When the top plate 14 moves within the cavity 306, the top plate 14 can slide on the base 304 and the mounting frame 10 through the contact with the cam plate 307, the chute 9, and the sliding port 11, and then drive the scraper 13 to slide within the mounting frame 10 and stretch the return spring 12. When the mounting frame 10 moves upward to the upper side of the bottom frame 301, the top plate 14 is located at the upper end of the cam plate 307, pushing the scraper 13 to move within the mounting frame 10 until it contacts the inner wall of the kiln barrel 1, and scraping the coking layer generated on the inner wall of the kiln barrel 1. During the upward movement of the mounting frame 10, as the scraper 13 moves, the scraping strip 19 is squeezed by the scraper 13, compressing the cleaning spring 18 and moving in the direction close to the bracket 16. The sliding rod can slide on the bracket 16 through the through hole 17, thereby restricting the scraping strip 19 to prevent the scraping strip 19 from deflecting during movement. When the mounting frame 10 moves downward with the rotation of the base 304, the scraper 13 can gradually retract into the mounting frame 10 under the action of the return spring 12 to avoid scratching the inner wall of the kiln barrel 1. During the retraction of the scraper 13, the scraping strip 19 also returns to its original position under the action of the cleaning spring 18, remaining closely attached to the surface of the scraper 13, thereby scraping the coking substances on the surface of the scraper 13 to prevent the coking substances from adhering to the scraper 13, reducing the service life of the scraper 13, and reducing the scraping effect of the coking layer. As the base 304 rotates, the scraped coking substances can be thrown from the scraper 13 and the scraping strip 19 into the bottom frame 301 under the action of centrifugal force, and slide along the inner wall of the bottom frame 301 into the feeding groove 4. At this time, the driving wheel 303 drives the feeding rod 6 to rotate within the feeding groove 4 through the chain and sprocket, so that the propeller blades on the outer side of the feeding rod 6 push the coking substances towards the feeding port 5, and finally discharge them into the external collection bin. The crushing rods 7 symmetrically distributed around the feeding rod 6 move within the feeding groove 4 along with the blades, collide with the coking substances and crush them. The blades that fit the inner wall of the feeding groove 4 can completely remove the coking substances adhering to the inner wall of the feeding groove 4 to avoid coking substance accumulation, and the crushing rods 7 can prevent the coking substances from agglomerating under the action of force within the feeding groove 4, resulting in being unable to smoothly pass through the feeding port 5 and leave the feeding groove 4, thereby accumulating within the feeding groove 4 and hindering the rotation of the feeding rod 6.

[0025] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0026] Specific examples are used in this text to illustrate the principles and implementation manners of the present invention. The description of the above examples is only for helping to understand the method and its core idea of the present invention. The above are only the preferred implementation manners of the present invention. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A rotary kiln anti-coking device, characterized in that: The invention comprises a kiln barrel (1) and a power assembly (3), wherein a tooth groove (2) is arranged inside the kiln barrel (1), and the power assembly (3) is arranged on one side of the tooth groove (2). The power assembly (3) comprises a bottom frame (301), wherein the bottom frame (301) is arranged on one side of the tooth groove (2), and a driving wheel (302) is rotatably connected to one side of the bottom frame (301), and a driving wheel (303) is connected to one side of the driving wheel (302). A base (304) is arranged in the middle of the bottom frame (301), and a transmission wheel (305) is arranged on one side of the base (304). A cavity (306) is arranged in the middle of the base (304), and a cam plate (307) is arranged in the cavity (306), and shafts (308) are connected to both sides of the cam plate (307).

2. A rotary kiln anti-coking device according to claim 1, characterized in that: The driving wheel (302) is meshed with the tooth groove (2), and the transmission wheel (305) is meshed with the driving wheel (302), the shaft (308) is connected to the bottom frame (301), and the base (304) is rotatably connected to the bottom frame (301) via the shaft (308).

3. A rotary kiln anti-coking device according to claim 1, characterized in that: A feeding trough (4) is provided at the lower part of the bottom frame (301), and a feeding port (5) is provided on one side of the feeding trough (4). A feeding rod (6) is rotatably connected in the feeding trough (4), and crushing rods (7) are provided around the feeding rod (6).

4. A rotary kiln anti-coking device according to claim 3, characterized in that: The feeding rod (6) is connected to the driving wheel (303) via a sprocket and a chain, and the crushing rod (7) is symmetrically distributed about the feeding rod (6). A propeller blade is provided on the outside of the feeding rod (6), and the crushing rod (7) is connected to the blade.

5. A rotary kiln anti-coking device according to claim 1, characterized in that: The base (304) has a mounting groove (8) on its surface, and a slide groove (9) in the middle of the mounting groove (8); a mounting frame (10) is connected to the mounting groove (8), and a slide opening (11) is in the middle of the mounting frame (10).

6. A rotary kiln anti-coking device according to claim 5, characterized in that: A return spring (12) is symmetrically connected inside the installation frame (10), and one end of the return spring (12) is connected to a scraper (13), the middle of the scraper (13) is connected to a top plate (14), and one end of the top plate (14) is located in the cavity (306).

7. A rotary kiln anti-coking device according to claim 6, characterized in that: The scraper (13) is slidably connected to the mounting frame (10), and the scraper (13) is elastically connected to the mounting frame (10) via a return spring (12); the top plate (14) is slidably connected to the mounting frame (10) via a sliding opening (11), and the top plate (14) surrounds the outside of the cam plate (307).

8. A rotary kiln anti-coking device according to claim 6, characterized in that: Support rods (15) are symmetrically connected to both sides of the base (304), and brackets (16) are connected between the support rods (15), and through holes (17) are provided on the surfaces of the brackets (16).

9. A rotary kiln anti-coking device according to claim 8, characterized in that: A cleaning spring (18) is symmetrically connected to one side of the bracket (16), and a scraper strip (19) is connected to one end of the cleaning spring (18), and a limiting rod (20) is symmetrically connected to the surface of the scraper strip (19).

10. A rotary kiln anti-coking device according to claim 9, characterized in that: The limiting rod (20) is slidably connected to the bracket (16) through the through hole (17), and the scraper strip (19) is elastically connected to the bracket (16) through the cleaning spring (18). The scraper strip (19) is in close contact with the surface of the scraper (13), and the cleaning spring (18) and the return spring (12) are both made of high temperature resistant material.

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