Anti-ring formation device for rotary kiln

Abstract

This application provides a rotary kiln anti-ring-forming device, including six scraper blades, each with an end ring at both ends. An installation mechanism connects the end rings to the scraper blades. Multiple reinforcing rings are internally located within each of the six scraper blades, and a connecting mechanism connects the reinforcing rings to the scraper blades. Wear-resistant blocks are provided on the surface of each scraper blade. This device incorporates wear-resistant alloy steel blocks on the scraper blade surface. This material has high hardness and strong wear resistance, greatly enhancing the scraper blade's ability to resist friction with the kiln wall and wear during the scraping of low-melting-point substances. This effectively extends the scraper blade's service life, reduces gaps between the scraper blade and the kiln wall caused by wear, and ensures continuous and efficient scraping of low-melting-point substances. Furthermore, when the wear-resistant blocks are severely worn or the scraper blades are damaged, new scraper blades can be quickly replaced through the installation and connecting mechanisms, reducing maintenance costs and difficulty, and ensuring the device's long-term stable anti-ring-forming function.

Description

Technical Field

[0001] This utility model relates to the field of rotary kilns, and more specifically, to a rotary kiln anti-ringing device. Background Technology

[0002] Rotary kilns are key thermal equipment widely used in many industries such as building materials, metallurgy, chemicals, and environmental protection. Through the rotation of the kiln shell, materials continuously tumble and move within the kiln, achieving physicochemical reactions and completing processes such as calcination and roasting. However, during long-term operation, materials tend to adhere and accumulate in specific areas within the kiln, gradually forming rings. This not only affects ventilation and material flow within the kiln, reducing production efficiency, but also increases energy consumption and equipment wear.

[0003] Prior art, patent publication (announcement) number CN220230008U, discloses an anti-ringing device for rotary kilns, comprising two end rings and multiple scrapers. The scrapers are connected between the two end rings and arranged circumferentially along the end rings. As a further improvement of this invention, it also includes multiple reinforcing rings connected to the inner side of each scraper and arranged along the length of the scraper. The reinforcing rings provide support for the scrapers. As a further improvement of this invention, the end rings have a triangular cross-section, which facilitates material flow and avoids dead zones.

[0004] The aforementioned patent documents disclose a device for preventing ring formation in rotary kilns. While this solves the problems of production disruption and shutdown caused by ring formation in rotary kilns, as well as the time-consuming, dangerous, and equipment-damaging nature of conventional manual ring removal, its shortcomings are as follows:

[0005] When the above-mentioned patented device is in use, the scraper will wear out during the long-term friction with the kiln wall and the scraping of low-melting-point substances. When the wear reaches a certain level, gaps will appear between the scraper and the kiln wall, making it impossible to effectively scrape off low-melting-point substances, resulting in a decrease in the anti-ringing effect.

[0006] Furthermore, when the rotary kiln is in operation, materials may accumulate around the device, hindering the device from rotating in the reverse direction with the rotary kiln, causing the scraper to malfunction and affecting the anti-ringing effect.

[0007] Therefore, we have made improvements to this by proposing a rotary kiln anti-ringing device. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a rotary kiln anti-ringing device, which solves the problems mentioned in the background art.

[0009] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0010] A rotary kiln anti-ringing device is used to solve the above problems.

[0011] The application is as follows:

[0012] The device includes six scraper blades, each with an end ring at both ends. An installation mechanism is provided between the end rings and the scraper blades. Multiple reinforcing rings are provided inside each of the six scraper blades, and a connecting mechanism is provided between the reinforcing rings and the scraper blades. Wear-resistant blocks are provided on the surface of each scraper blade.

[0013] The installation mechanism includes an installation groove, which is formed on one side surface of the end ring. The two ends of the scraper are respectively engaged with the installation grooves on the two side surfaces of the end ring, and the scraper and the end ring form an engaging structure.

[0014] As a preferred technical solution of this application, the scraper is provided with grooves at both ends, and two sliding plates are slidably connected inside the grooves. A locking block and a pressing block are fixedly installed on one side surface of the sliding plate. The upper and lower surfaces of the mounting groove are provided with slots, and the locking block and the slot are engaged and connected.

[0015] As a preferred technical solution of this application, a fixing plate is fixedly installed in the middle of the slide, and several springs are fixedly installed on both sides of the fixing plate and the two slide plates.

[0016] As a preferred technical solution of this application, the connecting mechanism includes a groove, which is opened on the outer surface of the reinforcing ring, and the scraper is engaged with the groove. The groove has an installation hole inside, and the lower surface of the scraper has a threaded hole. A screw is provided inside the installation hole, and the screw is threadedly connected to the threaded hole.

[0017] As a preferred technical solution of this application, a rubber ring is provided on the outside of the screw, and the rubber ring is sleeved on the outside of the screw.

[0018] As a preferred technical solution of this application, the wear-resistant block is welded to the scraper, and the wear-resistant block is made of wear-resistant alloy steel.

[0019] As a preferred technical solution of this application, the surface of the wear-resistant block is uniformly provided with several grooves.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the scheme of this application:

[0022] 1. This device incorporates wear-resistant alloy steel wear blocks on the scraper surface. This material boasts high hardness and strong wear resistance, significantly enhancing the scraper's ability to resist friction with the kiln wall and wear during the removal of low-melting-point substances. This effectively extends the scraper's service life, reduces gaps between the scraper and the kiln wall caused by wear, and ensures continuous and efficient removal of low-melting-point substances. Furthermore, when the wear blocks are severely worn or the scraper is damaged, a new scraper can be quickly replaced via the installation and connection mechanisms, reducing maintenance costs and difficulty and ensuring the device's long-term stable anti-ringing function.

[0023] 2. The grooves on the surface of the wear-resistant block guide and disperse the material, changing its flow state, reducing accumulation around the device, and preventing obstruction of the device's rotation. Simultaneously, the stable structure of the device's six scrapers with reinforcing rings provides overall rigidity, allowing it to overcome resistance and rotate smoothly in the opposite direction even with small amounts of material accumulation. This ensures continuous scraper operation, prevents the anti-ringing function from failing due to material accumulation, and guarantees normal rotary kiln production. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a cross-sectional structural diagram of the installation mechanism of this utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the connection mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the reinforcing ring and the groove of this utility model.

[0028] The image shows:

[0029] 1. Scraper; 2. End ring; 3. Mounting mechanism; 301. Mounting groove; 302. Slide groove; 303. Slide plate; 304. Locking block; 305. Press block; 306. Locking groove; 307. Fixing plate; 308. Spring; 4. Reinforcing ring; 5. Connecting mechanism; 501. Groove; 502. Mounting hole; 503. Threaded hole; 504. Screw; 505. Rubber ring; 6. Wear-resistant block; 7. Groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] To address the technical problems in the background section, the following rotary kiln anti-ringing device is provided:

[0036] Combination Figure 1 - Figure 4 As shown, the present invention provides a rotary kiln anti-ringing device, including scraper bars 1, of which six scraper bars 1 are provided, and each of the six scraper bars 1 has an end ring 2 at both ends. An installation mechanism 3 is provided between the end ring 2 and the scraper bar 1. Multiple reinforcing rings 4 are provided inside the six scraper bars 1, and a connecting mechanism 5 is provided between the reinforcing rings 4 and the scraper bar 1. Wear-resistant blocks 6 are provided on the surface of the scraper bar 1. The installation mechanism 3 includes an installation groove 301, which is opened on one side surface of the end ring 2. The two ends of the scraper bar 1 are respectively engaged with the installation groove 301 on the surface of the two end rings 2, and the scraper bar 1 and the end ring 2 form an engaging structure.

[0037] In this embodiment, six scraper blades 1 are evenly distributed in the overall structure of the device, with each end supported by an end ring 2, forming a regular and stable frame structure. The end ring 2 and the scraper blades 1 are connected by an installation mechanism 3, with both ends of the scraper blades 1 engaging in the installation grooves 301 on one side of the end ring 2, thus forming an efficient engagement structure.

[0038] In actual operation, when the rotary kiln starts running, the anti-ringing device rotates along with the kiln body. Because the scraper 1 and the end ring 2 are tightly connected by this interlocking structure, they can maintain a stable relative position during rotation, ensuring that the scraper 1 can continuously and stably contact the kiln wall. The six scraper 1 work together to cover the area of ​​the kiln wall where rings may form, and promptly scrape off the material that gradually adheres to and accumulates on the kiln wall, effectively preventing the occurrence of ring formation.

[0039] In a preferred embodiment, the scraper 1 has grooves 302 inside both ends, and two slide plates 303 are slidably connected inside the grooves 302. A locking block 304 and a pressing block 305 are fixedly installed on one side surface of the slide plate 303. The upper and lower surfaces of the mounting groove 301 are provided with slots 306, and the locking block 304 and the slot 306 are engaged and connected.

[0040] In this embodiment: two slide plates 303 are slidably connected in the slide groove 302. A locking block 304 and a pressing block 305 are fixedly installed on one side surface of the slide plate 303 and slide with the scraper 1. The upper and lower sides of the mounting groove 301 are respectively provided with locking slots 306. When the scraper 1 is installed into the mounting groove 301 of the end ring 2, the sliding plate 303 is driven to slide in the slide groove 302 by operating the pressing block 305, so that the locking block 304 is accurately locked into the locking slot 306, thereby realizing a stable and convenient locking connection between the scraper 1 and the end ring 2, ensuring the reliability of the connection. By pressing the pressing block 305, the sliding plate 303 can be moved so that the locking block 304 is not locked with the locking slot 306, which is convenient for disassembly and replacement when needed.

[0041] In a preferred embodiment, a fixing plate 307 is fixedly installed in the middle of the slide 302, and several springs 308 are fixedly installed on both sides of the fixing plate 307 and the two slide plates 303.

[0042] In this embodiment, the spring 308 supports the sliding plates 303 on both sides. When the scraper 1 is in its normal installation state, the spring 308, due to its elasticity, provides a pushing force to the sliding plate 303, causing the locking block 304 to be tightly engaged in the slot 306. This effectively prevents the locking block 304 from loosening or falling out due to vibrations during equipment operation, greatly enhancing the stability and reliability of the connection between the scraper 1 and the end ring 2. When the scraper 1 needs to be disassembled for maintenance or replacement, simply apply appropriate external force to overcome the elasticity of the spring 308, and the sliding plate 303 can be easily pushed, allowing the locking block 304 to disengage from the slot 306, achieving quick disassembly.

[0043] In a preferred embodiment, the connecting mechanism 5 includes a slot 501, which is formed on the outer surface of the reinforcing ring 4. The scraper 1 is engaged with the slot 501. An installation hole 502 is formed inside the slot 501, and a threaded hole 503 is formed on the lower surface of the scraper 1. A screw 504 is provided inside the installation hole 502, and the screw 504 is threadedly connected to the threaded hole 503.

[0044] In this embodiment, a groove 501 is formed on the outer surface of the reinforcing ring 4. The size of the groove 501 is adapted to the scraper 1. The scraper 1 can be inserted into the groove 501 to achieve the initial positioning and connection of the scraper 1 and the reinforcing ring 4, and to ensure that the relative position of the two in the horizontal direction is fixed.

[0045] Meanwhile, the slot 501 has an installation hole 502 inside, and the lower surface of the scraper 1 has a corresponding threaded hole 503. After the scraper 1 is inserted into the slot 501, the screws 504 are passed through the installation holes 502 and screwed into the threaded holes 503. Utilizing the threaded connection characteristics between the screws 504 and the threaded holes 503, the scraper 1 and the reinforcing ring 4 are tightly fixed in the vertical direction, effectively enhancing the stability and reliability of the connection between the two, and ensuring that the scraper 1 and the reinforcing ring 4 will not loosen or separate during the operation of the rotary kiln.

[0046] In a preferred embodiment, a rubber ring 505 is provided on the outside of the screw 504, and the rubber ring 505 is sleeved on the outside of the screw 504.

[0047] In this embodiment: during the process of screwing screw 504 into mounting hole 502 and threaded hole 503 to connect scraper 1 and reinforcing ring 4, rubber ring 505 is squeezed between screw 504 and the hole wall of mounting hole 502, which can effectively fill the small gap between screw 504 and mounting hole 502, play a good sealing and fastening role, and improve the reliability of the connection between scraper 1 and reinforcing ring 4.

[0048] In a preferred embodiment, the wear-resistant block 6 is welded to the scraper 1, and the wear-resistant block 6 is made of wear-resistant alloy steel.

[0049] In this embodiment, the wear-resistant block 6 and the scraper 1 are connected by welding, which ensures that a firm and stable bond is formed between the wear-resistant block 6 and the scraper 1. In the complex and high-intensity working environment of the rotary kiln, it effectively resists the problem of loosening or falling off the connection caused by factors such as equipment vibration and material impact. The wear-resistant block 6 is made of wear-resistant alloy steel, which has excellent wear resistance and high hardness. It can minimize its own wear during frequent friction with the kiln wall and scraping of low melting point materials, significantly extend the service life of the wear-resistant block 6, and reduce the maintenance frequency and cost of the device.

[0050] In a preferred embodiment, the surface of the wear-resistant block 6 is uniformly provided with a plurality of grooves 7.

[0051] In this embodiment: During the operation of the rotary kiln, when the wear-resistant block 6 contacts the material on the kiln wall and performs scraping operations, the presence of the groove 7 can change the contact state and force distribution between the material and the surface of the wear-resistant block 6. The groove 7 can increase the friction between the material and the surface of the wear-resistant block 6, which can better remove the material adhering to the kiln wall, effectively prevent the occurrence of ring formation, and thus avoid the accumulation of material around the device, ensuring that the device can rotate normally.

[0052] Specifically, the working principle of this solution is as follows:

[0053] In use, six scraper blades 1 are evenly distributed, with end rings 2 providing stable support at both ends to form a frame. The end rings 2 are connected to the scraper blades 1 via a mounting mechanism 3. Operating the button 305 causes the sliding plate 303 to slide within the groove 302, allowing the locking block 304 to engage with the slot 306, achieving a secure and convenient engagement. A spring 308 provides thrust to the sliding plate 303, enhancing the connection's stability; disassembly is achieved by overcoming the spring force of the spring 308. A reinforcing ring 4 has a slot 501 that engages with the scraper blades 1 for initial positioning. A screw 504 is then screwed through the mounting hole 502 into the threaded hole 503, with a rubber ring 505 filling the gap, ensuring the scraper blades 1 and reinforcing ring 4 are tightly fixed vertically, preventing loosening during operation. A wear-resistant block 6, welded to the scraper blades 1 and made of wear-resistant alloy steel, possesses high wear resistance and hardness, reducing its own wear. When the rotary kiln is in operation, the device rotates with the kiln body. Six scraper blades 1 cover the kiln wall in all directions, and wear-resistant blocks 6 come into contact with the material on the kiln wall. The grooves 7 on their surfaces change the contact state and force distribution, increasing friction and efficiently scraping away adhering materials to prevent ring formation. All components work together to ensure stable operation of the device, reduce maintenance frequency and costs, and effectively solve the problem of ring formation in rotary kilns.

[0054] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0055] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A rotary kiln anti-ringing device, comprising scraper bars (1), characterized in that: The scraper (1) is provided with six blades, and each of the six scraper blades (1) is provided with an end ring (2) at both ends. An installation mechanism (3) is provided between the end ring (2) and the scraper blade (1). Multiple reinforcing rings (4) are provided inside the six scraper blades (1), and a connecting mechanism (5) is provided between the reinforcing rings (4) and the scraper blade (1). Wear-resistant blocks (6) are provided on the surface of the scraper blade (1). The installation mechanism (3) includes an installation groove (301), and the installation groove (301) is opened on one side surface of the end ring (2). The two ends of the scraper (1) are respectively engaged with the installation groove (301) on the surface of the two end rings (2), and the scraper (1) and the end ring (2) form an engagement structure.

2. The rotary kiln anti-ringing device according to claim 1, characterized in that: The scraper (1) has grooves (302) inside both ends, and two slide plates (303) are slidably connected inside the grooves (302). A locking block (304) and a pressing block (305) are fixedly installed on one side surface of the slide plate (303). The upper and lower surfaces of the mounting groove (301) are provided with slots (306), and the locking block (304) and the slot (306) are engaged and connected.

3. The rotary kiln anti-ringing device according to claim 2, characterized in that: A fixing plate (307) is fixedly installed in the middle of the slide (302), and several springs (308) are fixedly installed on both sides of the fixing plate (307) and the two slide plates (303).

4. The rotary kiln anti-ringing device according to claim 1, characterized in that: The connecting mechanism (5) includes a slot (501), which is opened on the outer surface of the reinforcing ring (4). The scraper (1) is engaged with the slot (501). The slot (501) has an installation hole (502) inside, and the scraper (1) has a threaded hole (503) on its lower surface. The installation hole (502) has a screw (504) inside, and the screw (504) is threadedly connected to the threaded hole (503).

5. The rotary kiln anti-ringing device according to claim 4, characterized in that: A rubber ring (505) is provided on the outside of the screw (504), and the rubber ring (505) is sleeved on the outside of the screw (504).

6. The rotary kiln anti-ringing device according to claim 1, characterized in that: The wear-resistant block (6) is welded to the scraper (1), and the wear-resistant block (6) is made of wear-resistant alloy steel.

7. The rotary kiln anti-ringing device according to claim 1, characterized in that: The surface of the wear-resistant block (6) is uniformly provided with several grooves (7).

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