A rotary kiln for cement production and a method of using the same

Abstract

This invention relates to the field of rotary kiln technology, specifically to a rotary kiln for cement production and its method of use, comprising a rotary kiln shell. This rotary kiln for cement production and its method of use achieve atomized oil spraying by pressing lubricating oil from inside the column tube through a small gap between the movable ball and the ball opening, and spraying it onto the tire to ensure lubrication between the tire and the support roller and annular groove. This atomization and spraying of lubricating oil is achieved by utilizing the rotation of the tire, significantly reducing lubricating oil consumption. The tire surface can always maintain a fresh and adequate amount of lubricating oil, while also having a blowing effect, which is beneficial for the clean operation of the friction pairs. It also eliminates the possibility of contaminants and wear particles returning to the oil chamber. The oil chamber has no open openings that could contaminate the lubricating medium, resulting in high lubrication efficiency. Fresh oil mist lubrication can be dispersed with compressed air to the required lubrication friction parts, providing a good and uniform lubrication effect and significantly improving the life of transmission components.

Description

Technical Field

[0001] This invention relates to the field of rotary kiln technology, specifically to a rotary kiln for cement production and its usage method. Background Technology

[0002] Cement: A powdered hydraulic inorganic binder. When mixed with water, it forms a paste that hardens in air or water, and can firmly bind materials such as sand and stone together. Rotary kilns are used in the cement production process. Cement rotary kilns belong to the building materials equipment category and are a type of lime kiln. Rotary kilns can be classified according to the materials they process: cement rotary kilns, metallurgical and chemical rotary kilns, and lime rotary kilns. Cement rotary kilns are the main equipment in dry and wet process cement clinker production lines. Cement kilns are mainly used for calcining cement clinker and are divided into two main categories: dry process cement kilns and wet process cement kilns.

[0003] Rotary kilns are typically installed in cement production workshops. However, due to the high level of dust in these workshops, a large amount of dust can easily adhere to the rotating structure of the rotary kiln. This excessive dust accumulation can increase the friction of the rotating structure, affecting the rotation of the kiln and potentially causing it to seize up. Therefore, it is necessary to lubricate the tires regularly during the operation of the rotary kiln.

[0004] An existing patent (publication number: CN110398149B) discloses a cement rotary kiln, including a base, a rotating structure, an oiling structure, a dust scraping structure, and an anti-clogging structure. While the rotating structure is rotating, it drives the oiling structure to apply oil, thus ensuring sufficient lubrication and preventing increased friction or jamming due to excessive dust adhesion. The dust scraping structure installed on the base cleans the dust adhering to the rotating structure, ensuring better operation of the oiling structure and collecting excess lubricating oil to avoid waste. Furthermore, the anti-clogging structure continuously impacts the dust scraping structure during operation, preventing dust blockage. However, in this case, the lubricating oil is directly applied to the belt via a belt, making it difficult to control the application amount and potentially carrying contaminants and wear particles back into the oil chamber.

[0005] In view of this, we propose a rotary kiln for cement production and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a rotary kiln for cement production and its usage method, to solve the problems mentioned in the background art where lubricating oil is directly coated onto the belt, which makes it difficult to control the coating amount and easily brings contaminants and wear particles back into the oil chamber. To achieve the above objective, this invention provides the following technical solution: A rotary kiln for cement production, comprising a rotary kiln body, a movable kiln head for discharging material at the front end of the rotary kiln body, and a kiln tail for feeding material at the rear end of the rotary kiln body. The kiln tail, the movable kiln head, and the rotary kiln body are rotatably connected and sealed by stainless steel fish scales. Support roller assemblies are provided on both the front and rear sides of the bottom of the rotary kiln body, and a mounting base is provided at the center of the bottom of the rotary kiln body. A reduction motor is fixedly mounted on the mounting base, and a gear is fixedly mounted on the rotating shaft of the reduction motor. A gear ring is fixedly sleeved in the middle of the rotary kiln body, and the gear and gear ring mesh with each other and drive the rotary kiln body to roll.

[0007] Preferably, the support wheel assembly consists of a support component and a lubrication component.

[0008] Preferably, the supporting component includes a base disposed at the bottom of the rotary kiln cylinder, and supports are fixedly disposed at both ends of the top of the base. Each of the two supports is rotatably connected to a support roller, and the support roller is provided with an annular groove. The groove is a V-shaped structure with a wide outer diameter and a narrow inner diameter.

[0009] The rotary kiln shell is fixedly fitted with a tire corresponding to the support roller, and the tire is designed with a V-shaped structure corresponding to the annular groove. The rotary kiln shell is supported by the tire along the annular groove.

[0010] Preferably, the lubrication assembly includes an oil cavity formed in the base, and a tube seat is fixedly embedded in the top of the base. The upper and lower ports of the tube seat are respectively connected to the oil cavity and the outside, and a column tube is slidably connected inside the tube seat.

[0011] An inner column is fixedly installed at the bottom of the oil chamber, and the upper end of the inner column is movably inserted into the column tube. A pressure plug is fixedly sleeved on the surface of the inner column, and the pressure plug can enter the column tube to press up the lubricating oil inside.

[0012] The top of the inner column is movably provided with a movable ball, and the top of the column is made to be narrowed to form a ball opening. The ball opening is adapted to the movable ball and restricts the movable ball from falling out. The upper end of the inner column is movably sleeved with a top spring, and the two ends of the top spring abut against the inner column and the movable ball respectively.

[0013] The surface of the tire has several notches for the column tube to move upward.

[0014] The tube seat and the column tube are provided with a mud-pressing part.

[0015] Preferably, the sludge pressing part includes a scraper fixedly disposed on one side of the top of the tube seat. The top of the scraper is provided with a notch that fits into the bottom of the tire, and the surface of the scraper is provided with a scraping opening on the side that rotates relative to the tire. The wall of the scraping opening is an inclined surface facing the rotation of the tire.

[0016] The bottom of the scraper seat has a groove that communicates with the scraping port.

[0017] The tube seat surface has a groove on the side opposite to the scraper seat, and a Z-shaped frame is slidably connected inside the groove. The inner end of the Z-shaped frame is fixedly connected to the column tube, and a support plate is rotatably connected to the outer end of the Z-shaped frame. The support plate can enter the bottom groove to squeeze the sludge.

[0018] The connection between the Z-shaped frame and the tray is off-center, and the tray slides out of the bottom groove at an angle. The tray can be pushed into the bottom groove by the groove opening to a horizontal state that is in contact with the groove wall.

[0019] Preferably, a valve pipe for injecting and extracting lubricating oil from the oil chamber is fixedly installed on the surface of the base.

[0020] Preferably, the inner column is designed as a three-section column structure that is thinner at the top and thicker at the bottom.

[0021] A method for using a rotary kiln for cement production includes the following steps:

[0022] S1. The gear ring and rotary kiln cylinder are driven by a geared motor and gears to rotate along the support roller group, thereby producing cement clinker by calcining the raw materials inside.

[0023] S2. During the operation of the rotary kiln cylinder driven by the geared motor, it is mainly supported and constrained by the tire along the support roller. Compared with the "I" structure, this equipment sets the tire and the ring groove to a suitable V-shaped structure, so that the tire can center itself along the ring groove. On the one hand, this ensures that the surfaces on both sides of the tire can always make uniform contact along the ring groove, ensuring uniform friction on both sides and avoiding tire deviation caused by uneven edges. On the other hand, after the tire wears, it can center itself along the inclined wall of the ring groove, thereby maintaining the position of the tire and the rotary kiln cylinder, improving the stability of the rotary kiln cylinder during the rolling process.

[0024] S3. During the rotation of the rotary kiln cylinder and tire, the tire intermittently pushes against the column tube through the notch on its surface. Specifically, the column tube moves upward along the notch area under the thrust of the top spring and downward under the full-area push of the tire. As the column tube moves upward, the top spring releases its pressure on the top movable ball, causing the movable ball to move slightly downward and create a gap between itself and the ball opening. The oil chamber communicates with the outside through this gap, and oil enters the bottom of the column tube through the narrow gap between it and the inner column. As the column tube moves downward, the pressure plug on the surface of the inner column enters the column tube and presses up the internal lubricating oil. Simultaneously, the relatively upward-moving inner column pushes the top spring to press the movable ball tightly. At this point, the movable ball is engaged in the ball opening, and the lubricating oil in the column tube flows along the space between the movable ball and the ball opening. The minute gap between the components is pressed out to achieve atomized oil spraying, which is then sprayed onto the belt to ensure lubrication between it and the support roller and ring groove. This utilizes the rotation of the belt to achieve atomized oil spraying, significantly reducing oil consumption. The belt surface can always maintain a fresh and appropriate amount of lubricating oil, while also having a blowing effect, which is beneficial for the clean operation of the friction pair. It can also eliminate the possibility of contaminants and wear particles returning to the oil chamber. The oil chamber has no open openings that could contaminate the lubricating medium, resulting in high lubrication efficiency. Fresh oil mist lubrication can be dispersed with compressed air to the required lubrication friction parts, giving the lubrication parts a good and uniform lubrication effect, and greatly improving the service life of transmission components.

[0025] S4. During the rotation of the tire, its surface passes through the notch on the scraper seat synchronously. During this process, the dust and sludge adhering to the surface of the tire can be scraped and left in the bottom groove along the inclined surface of the scraping port. At the same time, the oil spraying column pipe slides up and down and drives the pallet to move synchronously through the Z-shaped frame. When the pallet slides into the bottom groove, it is pushed by the groove opening to a horizontal state that fits against the groove wall, and the dust and sludge in the bottom groove are pressed into blocks. After the pallet moves down out of the bottom groove, it automatically deflects along the offset connection and tilts the formed mud block out. In this way, while removing the sludge, the sludge is shaped, which makes it easier for the operator to clean and transfer the sludge later.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] In this invention, lubricating oil inside the tube is atomized and sprayed through a small gap between the movable ball and the ball opening, ensuring lubrication between the tire and the support roller and the ring groove. This atomization of the lubricating oil is achieved by utilizing the rotation of the tire, significantly reducing oil consumption. The tire surface always maintains a fresh and adequate amount of lubricating oil, while also having a blowing effect, which is beneficial for the clean operation of the friction pair. It also eliminates the possibility of contaminants and wear particles returning to the oil chamber. The oil chamber is not open, preventing contamination of the lubricating medium, resulting in high lubrication efficiency. Fresh oil mist lubrication is dispersed with compressed air to the required lubrication friction parts, providing a good and uniform lubrication effect and significantly improving the lifespan of transmission components.

[0028] In this invention, the tire is supported and constrained along the support roller. Compared to the "I" structure, this device sets the tire and the annular groove into a matching V-shaped structure, so that the tire self-centers along the annular groove. On the one hand, this ensures that the surfaces on both sides of the tire can always make uniform contact along the annular groove, ensuring uniform friction on both sides and avoiding tire displacement caused by uneven edges. On the other hand, after the tire wears, it can center itself along the inclined wall of the annular groove, thereby maintaining the position of the tire and the rotary kiln body, improving the stability of the rotary kiln body during the rolling process.

[0029] In this invention, as the tire rotates, its surface synchronously passes through the notch on the scraper seat. During this process, dust and sludge adhering to the surface of the tire can be scraped and left in the bottom groove along the inclined surface of the scraping opening. At the same time, the oil spraying column pipe, which slides up and down, drives the pallet to move synchronously through the Z-shaped frame. When the upward-moving pallet slides into the bottom groove, it is pushed by the groove opening to a horizontal state that fits against the groove wall, and the dust and sludge in the bottom groove are pressed into blocks. After the pallet moves down out of the bottom groove, it automatically deflects along the offset connection and tilts the formed mud block out. In this way, while removing the sludge, the sludge is shaped, which is convenient for the operator to clean and transfer the sludge later. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 For the present invention Figure 1 A three-dimensional structural diagram of the center support roller assembly;

[0032] Figure 3 For the present invention Figure 1 Front view of the center support roller assembly;

[0033] Figure 4 For the present invention Figure 1 Side view of the center support roller assembly;

[0034] Figure 5 For the present invention Figure 2 A three-dimensional sectional view of the lubrication assembly;

[0035] Figure 6 This is a three-dimensional structural cross-sectional view of the lubrication assembly of the present invention from an overhead perspective;

[0036] Figure 7 This is a three-dimensional structural cross-sectional view of the column tube of the present invention;

[0037] Figure 8 For the present invention Figure 7 The front view;

[0038] Figure 9 This is a schematic diagram of the bottom groove and the support plate of the present invention.

[0039] In the diagram: 1. Rotary kiln body; 2. Movable kiln head; 3. Kiln tail; 4. Support roller assembly; 41. Support component; 411. Base; 412. Bracket; 413. Support roller; 414. Annular groove; 415. Tire; 42. Lubrication component; 421. Oil chamber; 422. Pipe seat; 423. Column tube; 424. Inner column; 425. Pressure plug; 426. Movable ball; 427. Ball opening; 428. Top spring; 429. Notch; 4210. Sludge pressing part; 42101. Scraper seat; 42102. Notch; 42103. Scraping port; 42104. Bottom groove; 42105. Slide groove; 42106. Z-shaped frame; 42107. Support plate; 5. Mounting base; 6. Gear motor; 7. Gear; 8. Gear ring. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 9 This invention provides a technical solution: a rotary kiln for cement production, comprising a rotary kiln body 1, a movable kiln head 2 for discharging material at the front end of the rotary kiln body 1, and a kiln tail 3 for feeding material at the rear end of the rotary kiln body 1. The kiln tail 3, the movable kiln head 2, and the rotary kiln body 1 are rotatably connected and sealed by stainless steel fish scales. The invention is characterized in that: a set of support rollers 4 are provided on both the front and rear sides of the bottom of the rotary kiln body 1, and a mounting base 5 is provided at the center of the bottom of the rotary kiln body 1. A reduction motor 6 is fixedly mounted on the mounting base 5, and a gear 7 is fixedly mounted on the rotating shaft of the reduction motor 6. A gear ring 8 is fixedly sleeved in the middle of the rotary kiln body 1. The gear 7 and the gear ring 8 mesh with each other and push the rotary kiln body 1 to roll. The reduction motor 6 and the gear 7 drive the gear ring 8 and the rotary kiln body 1 to rotate along the support rollers 4, thereby producing cement clinker by calcining the raw materials inside.

[0042] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the support roller assembly 4 consists of a support component 41 and a lubrication component 42.

[0043] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9As shown, the support assembly 41 includes a base 411 set at the bottom of the rotary kiln body 1, and brackets 412 are fixedly set at both ends of the top of the base 411. Support rollers 413 are rotatably connected to the two brackets 412, and annular grooves 414 are opened on the support rollers 413. The groove of the annular groove 414 is a V-shaped structure with a wide outer diameter and a narrow inner diameter.

[0044] The rotary kiln body 1 is fixedly fitted with a tire 415 corresponding to the support roller 413, and the tire 415 is designed with a V-shaped structure corresponding to the annular groove 414. The rotary kiln body 1 is supported by the tire 415 along the annular groove 414. The surfaces on both sides of the tire 415 can always be in uniform contact along the annular groove 414. After the tire 415 is worn, it can be centered along the inclined wall of the annular groove 414.

[0045] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the lubrication assembly 42 includes an oil cavity 421 opened in the base 411, and a tube seat 422 is fixedly embedded in the top of the base 411. The upper and lower ports of the tube seat 422 are respectively connected to the oil cavity 421 and the outside, and a column tube 423 is slidably connected in the tube seat 422.

[0046] An inner column 424 is fixedly installed at the bottom of the oil cavity 421, and the upper end of the inner column 424 is movably inserted into the column tube 423. A pressure plug 425 is fixedly sleeved on the surface of the inner column 424, and the pressure plug 425 can enter the column tube 423 to press up the lubricating oil inside. When the column tube 423 moves down, the pressure plug 425 on the surface of the inner column 424 enters the column tube 423 to press up the lubricating oil inside.

[0047] A movable ball 426 is movably provided at the top of the inside of the column tube 423, and the top of the column tube 423 is made to form a ball mouth 427 by reducing the diameter. The ball mouth 427 is adapted to the movable ball 426 and restricts the movable ball 426 from falling out. The lubricating oil in the column tube 423 is squeezed out along the small gap between the movable ball 426 and the ball mouth 427 to achieve atomized oil spraying. A top spring 428 is movably sleeved at the upper end of the inner column 424, and the two ends of the top spring 428 abut against the inner column 424 and the movable ball 426 respectively. A clip is provided on the lower side of the movable ball 426 and in the inner tube of the column tube 423 to restrict the downward movement of the movable ball 426 so that it can only move slightly. The belt 415 intermittently pushes the column tube 423 through the notch 429 on its surface.

[0048] The surface of the tire 415 is provided with several notches 429 for the column tube 423 to move upward. The tire 415 intermittently pushes the column tube 423 through the notches 429 on its surface.

[0049] A mud-pressing part 4210 is provided on the tube seat 422 and the column tube 423.

[0050] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the sludge pressing part 4210 includes a scraper 42101 fixedly disposed along one side of the top of the tube seat 422. The top of the scraper 42101 is provided with a notch 42102 adapted to fit the bottom of the tire 415, and the surface of the scraper 42101 is provided with a scraping port 42103 on the side that rotates relative to the tire 415. The port wall of the scraping port 42103 is an inclined surface facing the rotation of the tire 415.

[0051] The bottom of the scraper seat 42101 is provided with a bottom groove 42104 that communicates with the scraping port 42103. During the rotation of the tire 415, its surface passes through the notch 42102 on the scraper seat 42101. During this process, the dust and sludge adhering to the surface of the tire 415 can be scraped and left in the bottom groove 42104 along the inclined surface of the scraping port 42103.

[0052] A groove 42105 is provided on the side of the tube seat 422 opposite to the scraper seat 42101, and a Z-shaped frame 42106 is slidably connected inside the groove 42105. The inner end of the Z-shaped frame 42106 is fixedly connected to the column tube 423, and a support plate 42107 is rotatably connected to the outer end of the Z-shaped frame 42106. The support plate 42107 can enter the bottom groove 42104 to squeeze the sludge.

[0053] The connection between the Z-shaped frame 42106 and the support plate 42107 is off-center, and the support plate 42107 slides out of the bottom groove 42104 at an angle. When the support plate 42107 slides into the bottom groove 42104, it can be pushed by the groove opening to a horizontal state that is in contact with the groove wall. The vertically sliding oil spraying column pipe 423 drives the support plate 42107 to move synchronously through the Z-shaped frame 42106. When the upward-moving support plate 42107 slides into the bottom groove 42104, it is pushed by the groove opening to a horizontal state that is in contact with the groove wall, and it presses the dust and sludge in the bottom groove 42104 into blocks. After the support plate 42107 moves down out of the bottom groove 42104, it automatically deflects along the off-center connection and tilts the formed mud block out.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a valve pipe for injecting and extracting lubricating oil in the oil chamber 421 is fixedly installed on the surface of the base 411, which facilitates the operator to replace the oil in the oil chamber 421.

[0055] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the inner column 424 is designed as a three-section column structure that is thinner at the top and thicker at the bottom.

[0056] A method for using a rotary kiln for cement production includes the following steps:

[0057] S1. The gear ring 8 and the rotary kiln cylinder 1 are driven to rotate along the support roller group 4 by the reduction motor 6 and gear 7, so as to produce cement clinker by calcining the raw materials inside.

[0058] S2. During the operation of the rotary kiln cylinder 1 driven by the geared motor 6, it is mainly supported and constrained by the tire 415 along the support roller 413. Compared with the "I" structure, this equipment sets the tire 415 and the annular groove 414 into a matching V-shaped structure, so that the tire 415 can be self-centered along the annular groove 414. On the one hand, it can ensure that the surfaces on both sides of the tire 415 can always be in uniform contact along the annular groove 414, ensuring uniform friction on both sides and avoiding uneven edges that cause the tire 415 to shift. On the other hand, after the tire 415 wears, it can be centered along the inclined wall of the annular groove 414, thereby maintaining the position of the tire 415 and the rotary kiln cylinder 1, improving the stability of the rotary kiln cylinder 1 during the rolling process.

[0059] S3. During the rotation of the rotary kiln cylinder 1 and the tire 415, the tire 415 intermittently pushes against the column tube 423 through the notch 429 on its surface. That is, the column tube 423 moves upward along the area of ​​the notch 429 under the thrust of the top spring 428, and moves downward under the complete area of ​​the tire 415. When the column tube 423 moves upward, the top spring 428 releases its pressure on the top movable ball 426. The movable ball 426 moves slightly downward, creating a gap between itself and the ball opening 427. The oil cavity 421 communicates with the outside through this gap. Oil enters the bottom end of the column tube 423 through the narrow column gap between it and the inner column 424. As the column tube 423 moves downward, the pressure plug 425 on the surface of the inner column 424 enters the column tube 423 and presses the internal lubricating oil upward. At the same time, the inner column 424, which moves upward relative to the column tube 423, pushes the top spring 428 to press the movable ball 426. At this time, the movable ball 426... 26 is fitted into the ball opening 427. The lubricating oil in the column tube 423 is pressed out along the small gap between the movable ball 426 and the ball opening 427 to achieve atomized oil spraying, and sprayed onto the belt 415 to ensure the lubrication effect between it and the support roller 413 and the ring groove 414. In this way, the rotation of the belt 415 is used to achieve atomized spraying of lubricating oil, which greatly reduces the amount of lubricating oil consumed. The surface of the belt 415 can always keep fresh and appropriate amount of lubricating oil. At the same time, it has a blowing effect, which is conducive to the clean operation of the friction pair. It can also eliminate the possibility of contaminants and wear particles returning to the oil chamber 421. The oil chamber 421 has no opening to contaminate the lubricating medium, and the lubrication efficiency is high. Fresh oil mist lubrication can be dispersed with compressed air to the required lubrication friction parts, so that the lubrication parts obtain good and uniform lubrication effect, which greatly improves the service life of transmission components.

[0060] S4. During the rotation of the tire 415, its surface synchronously passes through the notch 42102 on the scraper seat 42101. During this process, the dust and sludge adhering to the surface of the tire 415 can be scraped and left in the bottom groove 42104 along the inclined surface of the scraping port 42103. At the same time, the oil spraying column 423, which slides up and down, drives the support plate 42107 to move synchronously through the Z-shaped frame 42106. When the upward-moving support plate 42107 slides into the bottom groove 42104, it is pushed by the groove opening to a horizontal state that fits against the groove wall, and the dust and sludge in the bottom groove 42104 are pressed into blocks. After the support plate 42107 moves down out of the bottom groove 42104, it automatically deflects along the offset connection and tilts the formed mud block out. In this way, while removing the sludge, the sludge is shaped, which makes it easier for the operator to clean and transfer the sludge later.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln for cement production, comprising a rotary kiln body (1), wherein a movable kiln head (2) for discharging material is provided at the front end of the rotary kiln body (1), and a kiln tail (3) for feeding material is provided at the rear end of the rotary kiln body (1), wherein the kiln tail (3), the movable kiln head (2), and the rotary kiln body (1) are rotatably connected and sealed by stainless steel fish scales, characterized in that: The rotary kiln body (1) is provided with a set of support wheels (4) on both the front and rear sides of the bottom, and a mounting seat (5) is provided at the middle of the bottom of the rotary kiln body (1). A reduction motor (6) is fixedly installed on the mounting seat (5), and a gear (7) is fixedly installed on the rotating shaft of the reduction motor (6). A gear ring (8) is fixedly sleeved in the middle of the rotary kiln body (1). The gear (7) and the gear ring (8) mesh with each other and push the rotary kiln body (1) to roll. The support roller assembly (4) consists of a support component (41) and a lubrication component (42); The supporting component (41) includes a base (411) set at the bottom of the rotary kiln body (1), and brackets (412) are fixedly set at both ends of the top of the base (411). Each of the two brackets (412) is rotatably connected to a support roller (413), and an annular groove (414) is opened on the support roller (413). The groove of the annular groove (414) is a V-shaped structure with a wide outer diameter and a narrow inner diameter. The rotary kiln body (1) is fixedly fitted with a tire (415) corresponding to the support roller (413), and the tire (415) is set as a V-shaped structure corresponding to the annular groove (414). The rotary kiln body (1) is supported by the tire (415) along the annular groove (414). The lubrication assembly (42) includes an oil cavity (421) opened in the base (411), and a tube seat (422) is fixedly installed on the top of the base (411). The upper and lower ports of the tube seat (422) are respectively connected to the oil cavity (421) and the outside, and a column tube (423) is slidably connected inside the tube seat (422). An inner column (424) is fixedly installed at the bottom of the oil cavity (421), and the upper end of the inner column (424) is movably inserted into the column tube (423). A pressure plug (425) is fixedly sleeved on the surface of the inner column (424), and the pressure plug (425) can enter the column tube (423) to press up the lubricating oil inside it. The top end of the column tube (423) is movably provided with a movable ball (426), and the top end of the column tube (423) is made to be narrowed to form a ball mouth (427). The ball mouth (427) is adapted to the movable ball (426) and restricts the movable ball (426) from falling out. The upper end of the inner column (424) is movably sleeved with a top spring (428), and the two ends of the top spring (428) abut against the inner column (424) and the movable ball (426) respectively. The surface of the tire (415) is provided with several notches (429) for the column tube (423) to move upward. The tube seat (422) and the column tube (423) are provided with a mud pressing part (4210).

2. The rotary kiln for cement production according to claim 1, characterized in that: The pressing part (4210) includes a scraper (42101) fixedly disposed on one side of the top of the tube seat (422). The top of the scraper (42101) is provided with a notch (42102) adapted to fit the bottom of the tire (415). The surface of the scraper (42101) and the side that rotates relative to the tire (415) are provided with a scraping port (42103). The wall of the scraping port (42103) is an inclined surface facing the rotation of the tire (415). The bottom of the scraper seat (42101) is provided with a bottom groove (42104) that communicates with the scraping port (42103). A groove (42105) is provided on the side of the tube seat (422) opposite to the scraper seat (42101), and a Z-shaped frame (42106) is slidably connected inside the groove (42105). The inner end of the Z-shaped frame (42106) is fixedly connected to the column tube (423), and a support plate (42107) is rotatably connected to the outer end of the Z-shaped frame (42106). The support plate (42107) can enter the bottom groove (42104) to squeeze the sludge. The connection between the Z-shaped frame (42106) and the tray (42107) is off-center, and the tray (42107) slides out of the bottom groove (42104) at an angle. The tray (42107) can slide into the bottom groove (42104) and be pushed by the groove opening to a horizontal state that is in contact with the groove wall.

3. A rotary kiln for cement production according to claim 2, characterized in that: The base (411) is fixedly mounted with a valve pipe for injecting and extracting lubricating oil into the oil chamber (421).

4. A rotary kiln for cement production according to claim 3, characterized in that: The inner column (424) is designed as a three-section column structure that is thinner at the top and thicker at the bottom.

5. The method of using a rotary kiln for cement production according to claim 4, comprising the following steps: S1. The gear ring (8) and rotary kiln cylinder (1) are driven by the geared motor (6) and gear (7) to rotate along the support roller group (4) so ​​as to produce cement clinker by calcining the raw materials inside. S2. During the operation of the rotary kiln cylinder (1) driven by the geared motor (6), it is mainly supported and constrained by the tire (415) along the support roller (413). Compared with the "I" structure, this equipment sets the tire (415) and the ring groove (414) into a matching V-shaped structure, so that the tire (415) can be self-centered along the ring groove (414). On the one hand, the surfaces on both sides of the tire (415) can always be in uniform contact along the ring groove (414), ensuring that the two sides are rubbed evenly and avoiding uneven edges that cause the tire (415) to deviate. On the other hand, after the tire (415) is worn, it can be centered along the inclined wall of the ring groove (414), thereby maintaining the position of the tire (415) and the rotary kiln cylinder (1) and improving the stability of the rotary kiln cylinder (1) during the rolling process. S3. During the rotation of the rotary kiln cylinder (1) and the tire (415), the tire (415) intermittently pushes against the column tube (423) through the notch (429) on its surface. That is, the column tube (423) moves upward along the area of ​​the notch (429) under the thrust of the top spring (428), and moves downward under the complete area of ​​the tire (415). When the column tube (423) moves upward, the top spring (428) releases its pressure on the top movable ball (426), and the movable ball... As the moving ball (426) moves slightly downward, a gap is created between it and the ball opening (427). The oil chamber (421) communicates with the outside through this gap. Oil enters the bottom end of the column tube (423) through the narrow column gap between it and the inner column (424). As the column tube (423) moves downward, the pressure plug (425) on the surface of the inner column (424) enters the column tube (423) and presses the lubricating oil inside upward. At the same time, the inner column (424), which moves upward relative to the column tube (423), pushes the top spring (428) to press the moving part. Ball (426), at this time the movable ball (426) is fitted into the ball mouth (427), the lubricating oil in the column tube (423) is pressed out along the small gap between the movable ball (426) and the ball mouth (427) to achieve atomized oil spraying, and sprayed on the belt (415) to ensure the lubrication effect between it and the support roller (413) and the ring groove (414). In this way, the rotation of the belt (415) is used to achieve atomized spraying of lubricating oil, which greatly reduces the consumption of lubricating oil. The surface of the belt (415) can always keep fresh and appropriate amount of lubricating oil, and at the same time has a blowing effect, which is conducive to the clean operation of the friction pair. It can also eliminate the possibility of contaminants and wear particles returning to the oil chamber (421). The oil chamber (421) is not open to contaminate the lubricating medium, and the lubrication efficiency is high. Fresh oil mist lubrication can be diffused with compressed air to the required lubrication friction parts, so that the lubrication parts obtain good and uniform lubrication effect, which greatly improves the service life of transmission parts. S4. During the rotation of the tire (415), its surface synchronously passes through the notch (42102) on the scraper seat (42101). During this process, the dust and sludge adhering to the surface of the tire (415) can be scraped and left in the bottom groove (42104) along the inclined surface of the scraper opening (42103). At the same time, the oil spraying column (423) moves up and down through the Z-shaped frame (42106) to drive the support plate (42107) to move synchronously. When the pallet (42107) slides into the bottom groove (42104), it is pushed by the groove opening to a horizontal state that fits against the groove wall, and the dust and sludge in the bottom groove (42104) are pressed into blocks. After the pallet (42107) moves out of the bottom groove (42104), it automatically deflects along the offset connection and tilts the formed mud block out. In this way, while removing the sludge, the sludge is shaped, which makes it easier for the operator to clean and transfer the sludge in the future.

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