Rotary kiln shoveling plate anti-caking device for compound fertilizer production

Abstract

The utility model relates to the technical field of rotary kiln components, in particular to a rotary kiln shoveling plate anti-caking device for compound fertilizer production. The kiln comprises a kiln body and shoveling plates circumferentially and uniformly distributed on the inner cavity wall of the kiln body, iron chains are arranged on the shoveling surfaces of the shoveling plates and are fixed with the shoveling plates through at least two fixing nodes, and chain bodies positioned between two adjacent fixing nodes on the iron chains are used as working chain sections. The length of the working chain section is larger than the distance between the two corresponding fixed nodes, so that when the kiln body rotates, the working chain section swings along with the gravity of the working chain section, and the working chain section impacts the shoveling plate and shovels materials attached to the material shoveling face. The rotary kiln material scraping device is simple in structure, has a good material scraping effect, and can be additionally arranged on an old rotary kiln conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln components, in particular to a rotary kiln lifting plate anti-caking device for compound fertilizer production. Background Art

[0002] The rotary kiln is an important device for drying compound fertilizer and coating with anti-caking agents. The specific operation is to scoop the compound fertilizer to a high place through the scooping plate in the kiln, and then throw it down to form a material curtain. The drying or coating operation of the compound fertilizer is then realized in combination with the air drying mechanism or the anti-caking agent discharging mechanism.

[0003] When a rotary kiln is in use, compound fertilizer particles with high moisture content tend to stick to the scraper plate, often requiring shutdown and manual entry to clean the scraper plate. This is not only inconvenient but also impacts production efficiency. While rotary kiln structures exist that automatically clean the scraper plate, such as that described in Chinese Patent No. CN219014836U, entitled "A Rotary Kiln Dryer," which utilizes the sliding of the scraper plate to scrape material from the surface, these cleaning mechanisms are generally only suitable for flat-plate scraper plates and are relatively complex, making them difficult to retrofit onto older rotary kilns. Therefore, a solution is urgently needed. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a rotary kiln scraper plate anti-caking device for compound fertilizer production, which has a simple structure and good material scraping effect. In addition, it is easy to install on the old version of the rotary kiln.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A rotary kiln shovel plate anti-caking device for compound fertilizer production comprises a kiln body and shovel plates uniformly distributed circumferentially on the inner wall of the kiln body. An iron chain is provided on the shovel plate's shovel surface, and the iron chain is fixed to the shovel plate via at least two fixed nodes. The chain body located between two adjacent fixed nodes on the iron chain serves as a working chain segment, and the length of the working chain segment is greater than the distance between the corresponding two fixed nodes. When the kiln body rotates, the working chain segment swings due to its own gravity, and produces an impact action on the shovel plate and a shoveling action against the shovel plate.

[0007] As a further solution of the present invention: the material-scraping surface of the scraping plate has a V-shaped groove distributed along the axial direction of the kiln body in the groove length direction, and iron chains are provided on both groove walls of the V-shaped groove.

[0008] As a further solution of the present invention: the cross-section of the copying plate is V-shaped, with a section of the copying plate fixed to the inner wall of the kiln body as the fixed part, and the other section as the bent part. From the axial perspective of the kiln body, the fixed nodes are respectively located in the middle of the fixed part and the bent part.

[0009] As a further solution of the present invention: the two connecting ends of the fixed node are respectively located at the two ends of the fixed part and the bent part.

[0010] As a further solution of the present invention: the iron chain covers the entire material copying surface in the sliding area of ​​the material copying surface.

[0011] As a further solution of the present invention: a baffle is fixed to the inner side wall of the shoveling plate through a connecting column to prevent the iron chain from crossing over to the opposite side of the shoveling surface, and a feeding gap for the passage of materials is provided between the baffle and the shoveling surface.

[0012] As a further solution of the present invention: the baffles are distributed obliquely to form a trough structure for accommodating the iron chain between the baffles and the material-scraping surface.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. As the scraper lifts the compound fertilizer material from the kiln, the working segment of the chain swings with the movement of the scraper, with the fixed node acting as the swinging joint. This swinging motion impacts the scraper, causing the material on the scraper to separate from the scraper due to vibration. The working segment then continues to slide along the scraper's surface, scraping the material off the scraper, thereby removing it. This scraping mechanism is not only simple in structure but also provides excellent material removal efficiency. Furthermore, when retrofitting older rotary kilns, the chain only needs to be secured at the fixed node, making it easy to install on older rotary kilns.

[0015] 2. The scraping mechanism in this application can be adapted to a V-shaped scraping plate structure with better scraping effect. By arranging iron chains on both walls of the V-shaped groove, a good material scraping effect on the scraping plate can be ensured.

[0016] 3. From an axial perspective of the kiln body, the fixed nodes are located in the middle of the fixed and bent sections, respectively, to ensure that the working chain segments can better cover the width of the material surface during swinging. In addition, the connection points between the fixed nodes and the fixed and bent sections are located at the two ends of the fixed and bent sections, further ensuring that the working chain segments can better cover the length of the material surface during swinging. In turn, the sliding area of ​​the iron chain on the material surface covers the entire material surface, ensuring the effective scraping of the material on the scraping board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the first embodiment of the copying plate and the iron chain in the utility model.

[0019] Figure 3 It is a structural schematic diagram of a second embodiment of the copying plate and the iron chain in the present invention.

[0020] In the figure: 10, kiln body; 20, copy board; 21, fixing part; 22, bending part; 30, baffle; 31, connecting column; 40, fixed node; 50, iron chain; 60, unloading gap. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] For ease of understanding, the specific structure and working mode of the present invention are further described below with reference to the accompanying drawings:

[0023] The specific structure of the utility model refers to Figure 1-3 As shown, its main structure includes a kiln body 10 and shovels 20 uniformly distributed along the inner wall of the kiln body 10. An iron chain 50 is provided on the shovel surface of the shovel 20, secured to the shovel 20 by at least two fixed nodes 40. Specifically, the chain 50 between two adjacent fixed nodes 40 is a working segment. The length of this working segment is greater than the distance between the two fixed nodes 40. As the kiln body 10 rotates, the working segment swings under its own gravity, striking the shovel 20 and scooping material against the shovel surface. When the kiln body 10 rotates, the shovel 20 rotates synchronously with the kiln body 10, scooping the compound fertilizer material within the kiln body 10. During this process, the working segment of the chain 50 swings with the movement of the shovel 20, swinging about the fixed nodes 40 as swinging nodes. This swinging motion strikes the shovel 20, causing the material on the shovel 20 to separate from the shovel 20 due to vibration. Afterwards, the working segment will continue to slide on the material-scraping surface of the copying board 20 along with the copying board 20 to implement a material-scraping action on the copying board 20 , thereby removing the material on the material-scraping surface.

[0024] Specifically, such as Figure 1As shown, the material-carrying surface of the copy board 20 has a V-shaped groove distributed along the axial direction of the kiln body 10 in the groove length direction. The groove ratio of the V-shaped groove forms the material-carrying surface of the copy board 20, so that the copy board 20 has a better material-carrying effect. In addition, as Figure 2 As shown, iron chains 50 are provided on both groove walls of the V-shaped groove to ensure that a good material scraping effect can be achieved on the material scraping surface.

[0025] Further, such as Figure 1 As shown, the cross-section of the pick plate 20 is V-shaped. The section of the pick plate 20 that is fixed to the inner wall of the kiln body 10 is the fixed portion 21, and the other section is the bent portion 22. This ensures the V-shaped groove's inclination arc while conserving sheet material. Furthermore, from an axial perspective of the kiln body 10, the fixed nodes 40 are located in the middle of the fixed portion 21 and the bent portion 22, respectively, ensuring that the working chain segments provide better coverage across the width of the pick surface during swinging.

[0026] In addition, if Figure 2 As shown, the two connection ends of the fixed node 40 are respectively located at the two ends of the fixed portion 21 and the bending portion 22, further ensuring that the working chain segment can better cover the length direction of the material surface when swinging.

[0027] Furthermore, the chain 50 covers the entire surface of the material copying in the sliding area of ​​the material copying surface. Figure 2 In the manner shown, a fixed node 40 is provided at both ends of the copying surface; if the copying board 20 is long, the following can be used: Figure 3 In the illustrated embodiment, several additional fixed nodes 40 are disposed between the fixed nodes 40 at both ends. Specifically, when the working chain segments between adjacent fixed nodes 40 swing, for example, when the material handling surface on the fixed portion 21 swings, they abut against the edge of the material handling surface near the kiln body 10. This edge allows the working chain segments to conform to the edge of the kiln body 10, ensuring that the working chain segments fully cover the half of the material handling surface near the kiln body 10 during sliding. Similarly, when the working chain segments swing near the edge of the bend 22, the aforementioned deformation also occurs, ensuring that the working chain segments fully cover the half of the material handling surface near the bend 22 during swinging. Unlike the fixed portion 21, the side of the bend 22 facing away from the fixed portion 21 does not have a barrier to restrict the swinging of the working chain segments. Therefore, a baffle 30 is fixed to the inner sidewall of the lifting plate 20 via a connecting post 31 to prevent the chain 50 from traversing to the opposite side of the material handling surface. In addition, there is a material discharge gap 60 between the baffle 30 and the material surface for the material to pass through. It can ensure that the material is separated from the material discharge plate 20 through the material discharge gap 60.

[0028] Furthermore, the baffles 30 are distributed obliquely to form a trough structure for accommodating the iron chain 50 between the baffles 30 and the material-scraping surface, thereby ensuring the blocking effect of the baffles 30 on the iron chain 50 .

[0029] Of course, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0031] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A rotary kiln apron anti-caking device for compound fertilizer production, characterized in that: The invention comprises a kiln body (10) and a shoveling plate (20) uniformly distributed on the inner wall of the kiln body (10) in the circumferential direction. An iron chain (50) is provided on the shoveling surface of the shoveling plate (20). The iron chain (50) is fixed to the shoveling plate (20) through at least two fixed nodes (40). The chain body between two adjacent fixed nodes (40) on the iron chain (50) is a working chain segment. The length of the working chain segment is greater than the distance between the corresponding two fixed nodes (40). When the kiln body (10) rotates, the working chain segment swings with its own gravity and generates an impact action on the shoveling plate (20) and a shoveling action that adheres to the shoveling surface.

2. The rotary kiln apron anti-caking device for compound fertilizer production according to claim 1, characterized in that: The material-scraping surface of the scraping plate (20) has a V-shaped groove distributed along the axial direction of the kiln body (10) in the groove length direction, and iron chains (50) are provided on both groove walls of the V-shaped groove.

3. The rotary kiln apron anti-caking device for compound fertilizer production according to claim 2, characterized in that: The cross section of the lifting plate (20) is V-shaped, with a section of the lifting plate (20) fixed to the inner wall of the kiln body (10) being a fixed portion (21), and the other section being a bent portion (22). In the axial perspective of the kiln body (10), the fixed nodes (40) are respectively located in the middle of the fixed portion (21) and the bent portion (22).

4. The rotary kiln apron anti-caking device for compound fertilizer production according to claim 3, characterized in that: The two connection ends of the fixed node (40) are respectively located at the two ends of the fixed portion (21) and the bent portion (22).

5. The rotary kiln apron anti-caking device for compound fertilizer production according to claim 4, characterized in that: The iron chain (50) covers the entire material-scraping surface in the sliding area of ​​the material-scraping surface.

6. A rotary kiln apron anti-caking device for compound fertilizer production according to any one of claims 1 to 5, characterized in that: A baffle (30) is fixed to the inner side wall of the shoveling plate (20) via a connecting column (31) to prevent the iron chain (50) from crossing over to the opposite side of the shoveling surface. A material discharge gap (60) for passing materials exists between the baffle (30) and the shoveling surface.

7. The rotary kiln apron anti-caking device for compound fertilizer production according to claim 6, characterized in that: The baffles (30) are distributed obliquely to form a trough structure for accommodating the iron chain (50) between the baffles (30) and the material-scraping surface.

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