Device for preventing wall sticking of materials in rotary furnace

Abstract

The utility model provides a device of preventing rotary furnace inner material wall -hanging, including the knocking mechanism and reciprocating impact subassembly of setting on the furnace body outside wall of rotary furnace, the knocking mechanism hinged setting is on the outside wall of the furnace body of rotary furnace, reciprocating impact subassembly includes the slide rail of setting on the outside wall of furnace body, the slide rail inside slide has the sliding block, be provided with the fixed plate on the sliding block, be provided with the elastic member on the inboard wall of fixed plate, the output shaft end of elastic member is provided with the impact head, the utility model discloses can be through the furnace body of rotation with the knocking mechanism rotation together, under the action of the gravity of hinged setting knocking mechanism's own, reciprocating impact reciprocating impact subassembly, reciprocating impact subassembly will bring the impact head and realize the reciprocating knock work of furnace body outside wall, greatly promoted the impact frequency of furnace body in the process of furnace body rotation to furnace body, can avoid the unnecessary waste of material caused by rotary furnace inner material wall -hanging material.

Description

Technical Field

[0001] This utility model relates to the technical field of furnace wall cleaning equipment, specifically to a device for preventing material from sticking to the wall of a rotary furnace. Background Technology

[0002] Rotary furnaces can be used for physical or chemical processing of powder materials and are widely used in metallurgy, petroleum, rubber, plastics, textiles, pharmaceuticals, cigarettes, food, and feed processing. During the operation of a rotary furnace, some materials tend to adhere to the inner wall of the furnace, forming clumps that lead to material waste and may affect the normal operation of the furnace.

[0003] For example, Chinese utility model patent CN219995949 U discloses a device for rotary kilns, specifically a striking device for the rotary kiln cylinder. The striking device includes a striking hammer with a hinged portion, which is hinged to the side wall of the rotary kiln cylinder. The striking hammer also has a striking head and a limiting head, whose relative positions are fixed, with the hinged portion located between them. This striking device for the rotary kiln cylinder can automatically strike the cylinder during operation, thereby shaking off material adhering to the inner wall of the cylinder to a certain extent.

[0004] However, the traditional single hammer mentioned above relies solely on gravity to strike the furnace body. The hammer directly and rigidly impacts the side wall of the furnace body, which can easily cause local deformation or cracks in the furnace body over a long period of time. This is especially true for refractory-lined furnace bodies, where the damage rate can be as high as 20% per year. During the rotation of the furnace body, the striking mechanism will inevitably encounter situations where it is difficult to strike the furnace body, resulting in weakened furnace body vibration. This can easily create an "impact blind zone," which greatly reduces the cleaning effect of materials adhering to the inner wall of the rotary kiln. Utility Model Content

[0005] In view of this, the present invention provides a device for preventing material from adhering to the inner wall of a rotary kiln. It can achieve efficient and high-frequency knocking operation on the furnace body through a knocking mechanism and a reciprocating impact component, thereby knocking off the material adhering to the inner wall of the furnace. This avoids the problem of the knocking mechanism inevitably failing to knock on the furnace body, resulting in weakened furnace vibration. It reduces the impact blind zone and greatly improves the cleaning of material adhering to the inner wall of the rotary kiln.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for preventing material from sticking to the wall of a rotary kiln, including a striking mechanism and a reciprocating impact assembly installed on the outer wall of the rotary kiln body. The striking mechanism is hinged to the outer wall of the rotary kiln body and can strike the reciprocating impact assembly under its own gravity driven by the rotating kiln body. The reciprocating impact assembly includes a slide rail installed on the outer wall of the kiln body, a slider slidably installed in the slide rail, a fixed plate installed on the slider, an elastic element installed on the inner side wall of the fixed plate, and an impact head installed at the output shaft end of the elastic element. This invention utilizes a rotating furnace body that carries a striking mechanism. Simultaneously, the striking mechanism, hinged to a hinge, reciprocates against a reciprocating impact component under its own weight. This reciprocating impact component, with its impact head, repeatedly strikes the outer wall of the furnace body. This effectively avoids the inevitable issue of the striking mechanism failing to strike the furnace body during rotation, thus reducing furnace vibration. It significantly increases the impact frequency on the furnace body during rotation, thereby preventing unnecessary material waste caused by material adhering to the furnace walls.

[0007] The striking mechanism includes a support base mounted on the outer wall of the furnace body, and a striking hammer is hinged to the support base. This invention enables the striking hammer to strike the reciprocating impact assembly while the rotary furnace body rotates. Under the combined action of its own weight and the limiting and rotational connection of the support base on the hinge, the striking hammer rotates around the hinge and strikes the reciprocating impact assembly, providing the initial source of power for the impact force of the reciprocating impact assembly.

[0008] The hammer has a T-shaped cross-section, and its vertical part is hinged to the support base via a hinge shaft. The horizontal part of the hammer has detachable hammer heads at both ends. This invention allows for easy disassembly, maintenance, or replacement of the hammer heads when they wear out, making it more efficient and convenient.

[0009] The fixing plate has an arc-shaped structure, and the center of the fixing plate coincides with the center of the rotary kiln. This is to facilitate a more uniform and stable impact force on the furnace body.

[0010] There are two striking mechanisms, which are evenly distributed on the outer wall of the furnace body at the discharge port of the rotary kiln.

[0011] There are also two reciprocating impact components, and the striking mechanism and the reciprocating impact components are distributed at intervals on the outer wall of the furnace body. This makes it easier for the striking mechanism to work with the reciprocating impact components to achieve continuous striking action, and more efficiently avoids material sticking to the inner wall of the furnace body.

[0012] Multiple mounting plates are evenly distributed on the inner wall of the fixed plate. Each mounting plate is equipped with an elastic element, and each elastic element has a support plate at its end. Each support plate has an impact head at its end. This invention can achieve continuous impact on the furnace body by utilizing the elasticity or toughness of the elastic element itself, so that when the hammer is not striking the reciprocating impact component, the elastic potential energy accumulated after compression can also be used to achieve continuous impact on the furnace body, thus better avoiding the problem of material sticking to the wall inside the rotary kiln.

[0013] The elastic element is a spring; however, a tin bronze elastic sheet can also be selected as the elastic element.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Improved material adhesion to the rotary kiln walls and higher impact frequency: This invention utilizes the rotation of the rotary kiln to drive the impact mechanism and reciprocating impact assembly together. During this process, the gravity of the reciprocating impact assembly during its rotation drives the impact head at its end to reciprocate and impact the kiln body. Combined with the hinged impact mechanism, which swings along the hinge axis on the support base under its own gravity, the impact frequency and impact effect of the reciprocating impact assembly on the kiln body are greatly improved, effectively preventing material adhesion to the rotary kiln walls and achieving better results.

[0015] 2. Avoid direct, hard impacts on the furnace body with the hammer, greatly extending the service life of the furnace body: This utility model uses the reciprocating impact component of the hammer machine to avoid the hammer directly hitting the furnace body, which could easily damage the outer wall of the furnace body, thus extending the service life of the furnace body.

[0016] 3. Easy to maintain and reduce costs: The detachable hammerhead allows for quick replacement, greatly shortening maintenance time, and eliminating the need to replace the entire hammer, significantly reducing spare parts costs.

[0017] 4. Uniform impact eliminates blind spots: The arc-shaped fixing plate and multiple sets of impact heads work together to achieve full circumferential impact of the furnace body, eliminating blind spots on the wall and further improving material utilization and rotary furnace heat transfer efficiency.

[0018] 5. Increased striking frequency for more thorough anti-wall adhesion: Through alternating striking with two hammers and secondary impact from the elastic element, the furnace body receives 8 effective impacts per revolution, greatly increasing the striking frequency and significantly reducing the material wall adhesion loss rate. Attached Figure Description Figure 1 This is a schematic diagram of the device for preventing material from adhering to the wall inside a rotary kiln and the structure of the rotary kiln. Figure 2 This utility model Figure 1Enlarged view of point A in the middle; Figure 3 This is a front view of the device for preventing material from sticking to the wall inside a rotary kiln, as described in this utility model. Figure 4 This is a side view of the device for preventing material from sticking to the wall inside a rotary kiln, as described in this utility model.

[0019] Explanation of reference numerals in the attached drawings: 100, furnace body; 200, striking mechanism; 210, support base; 220, striking hammer; 230, hinge shaft; 240, hammer head; 300, reciprocating impact assembly; 310, slide rail; 320, slider; 330, fixing plate; 340, elastic element; 350, impact head; 360, mounting plate; 370, support plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figures 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figures 1-4As shown: This embodiment provides a device for preventing material from adhering to the walls of a rotary kiln, including a striking mechanism 200 and a reciprocating impact assembly 300 mounted on the outer wall of the kiln body 100. The striking mechanism 200 is hinged to the outer wall of the kiln body 100 and can strike the reciprocating impact assembly 300 under its own weight, driven by the rotating kiln body 100. The reciprocating impact assembly 300 includes a slide rail 310 mounted on the outer wall of the kiln body 100, a slider 320 slidably mounted inside the slide rail 310, a fixing plate 330 mounted on the slider 320, an elastic element 340 mounted on the inner wall of the fixing plate 330, and an impact head 350 mounted at the output shaft end of the elastic element 340. Specifically, the slide rail 310 is made of 40Cr steel. Alloy structural steel, quenched and hard chrome plated to enhance wear resistance, is welded to the outer wall of the furnace body 100; the slider 320 is made of the same material as the slide rail 310 and slides smoothly within the slide rail 310; the fixing plate 330 has an arc-shaped structure and is made of Q235 steel. The steel, whose center coincides with the center of the rotary kiln, is fixed to the outside of the slider 320 by bolts. Multiple mounting plates 360 are welded evenly on the inner side wall. This utility model allows the rotating furnace body 100 to rotate together with the striking mechanism 200. Under the action of the weight of the striking mechanism 200, it reciprocates and impacts the reciprocating impact component 300. The reciprocating impact component 300, with the impact head 350, performs reciprocating striking operations on the outer wall of the furnace body 100. This can effectively avoid the situation where the striking mechanism 200 inevitably fails to strike the furnace body 100 during the rotation of the furnace body 100, resulting in weakened vibration of the furnace body 100. It greatly increases the impact frequency of the furnace body 100 during the rotation of the furnace body 100, thereby avoiding unnecessary waste of materials caused by material sticking to the wall of the rotary kiln.

[0022] According to one embodiment of the present invention, such as Figures 1-4As shown, the striking mechanism 200 includes a support base 210 welded to the outer wall of the furnace body 100. A striking hammer 220 is hinged to the support base 210. The striking hammer 220 has a T-shaped cross-section, and its vertical part is hinged to the support base 210 via a hinge shaft 230. Hammer heads 240 are detachably mounted at both ends of the horizontal part of the striking hammer 220. Specifically, the support base 210 is made of Q345B low-alloy high-strength steel, which has high temperature resistance and impact resistance. It is fixed to the outer wall of the furnace body 100 by welding and has a hinge groove at the top. The striking hammer 220 is made of 45# steel and has undergone quenching and tempering. Its vertical part is hinged to the hinge groove of the support base 210 via a 40Cr alloy hinge shaft 230 and can swing freely around the hinge shaft 230. The hammer head 240 is made of YG8 steel. Made of hard alloy, it has excellent wear resistance. It is detachably connected to both ends of the horizontal part of the hammer 220 by bolts. The bolts are equipped with anti-loosening nuts to prevent them from falling off due to vibration. This utility model can achieve the hammer 220, which is hinged, to strike the reciprocating impact assembly 300 while the furnace body 100 of the rotary kiln is rotating. Under the combined action of its own weight and the limiting and rotational connection of the hinge by the support base 210, the hammer 220 rotates around the hinge part and strikes the reciprocating impact assembly 300, thus providing the initial source of power for the impact force of the reciprocating impact assembly 300.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the fixing plate 330 has an arc-shaped structure, and the center of the fixing plate 330 coincides with the center of the rotary kiln. The purpose of this is to make it easier to achieve a more uniform and stable impact force on the furnace body 100.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, there are two striking mechanisms 200, which are evenly distributed on the outer wall of the furnace body 100 at the discharge port of the rotary kiln.

[0025] There are also two reciprocating impact components 300, and the striking mechanism 200 and the reciprocating impact components 300 are arranged at intervals on the outer side wall of the furnace body 100. This makes it easier for the striking mechanism 200 to work with the reciprocating impact components 300 to achieve continuous striking action, and more effectively prevents materials from sticking to the inner wall of the furnace body 100.

[0026] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, multiple mounting plates 360 are evenly distributed on the inner wall of the fixed plate 330. Each mounting plate 360 ​​is provided with an elastic element 340, and each elastic element 340 has a support plate 370 at its end. Each support plate 370 has an impact head 350 at its end. Specifically, the support plate 370 is made of Q345B steel, and the impact head 350 is made of ZG40CrNiMo alloy cast steel. They are fixed to the end of the support plate 370 by welding. The end of the impact head 350 has an arc-shaped contact surface that fits against the furnace body 100. This utility model can achieve continuous impacting of the furnace body 100 by utilizing the elasticity or toughness of the elastic element 340 itself, even when the hammer 220 is not striking the reciprocating impact assembly 300, by using the elastic potential energy accumulated after compression. This better avoids the problem of material sticking to the wall in the rotary kiln.

[0027] The elastic element 340 is a spring. Of course, the elastic element 340 can also be a tin bronze elastic sheet. Specifically, one is a compression spring made of 60Si2Mn alloy spring steel (using the TC100 type from Shanghai Chunri Machinery Industry Co., Ltd.), and the other is a QSn6.5-0.1 tin bronze elastic sheet (using the T2 type from Luoyang Copper Processing Group). One end of the elastic element 340 is welded to the mounting plate 360, and the other end is welded to the support plate 370.

[0028] How to use this utility model: First, it needs to be clarified that the device for preventing material adhesion inside a rotary kiln involved in this utility model is mainly used to strike the outer wall of the kiln body 100 in conjunction with the striking mechanism 200 under the rotation of the rotary kiln, thereby knocking off the material adhering to the inner wall of the kiln body 100. This greatly improves the discharge efficiency of the rotary kiln and avoids the problem of unnecessary waste caused by material adhering to the inner wall of the kiln body 100. This utility model will describe in detail the working principle and usage method of the device for preventing material adhesion inside a rotary kiln during the rotation of the rotary kiln. The working principle is as follows: This device achieves anti-wall adhesion through a coordinated mechanism of "furnace body 100 driving - hammer swinging and striking - component reciprocating impact - elastic element 340 continuous work": High-frequency striking trigger principle: When the rotary kiln is working, the furnace body 100 rotates at a constant speed, driving the striking mechanism 200 and the reciprocating impact assembly 300 to rotate synchronously. Due to the hinged setting, the T-shaped striking hammer 220 swings back and forth around the hinge axis 230 under the action of its own gravity and centrifugal force. The hammer heads 240 at both ends alternately strike the fixed plate 330 of the adjacent reciprocating impact assembly 300 as the furnace body 100 rotates. The fixed plate 330 carries the slider 320 to slide along the slide rail 310. Four strikes are achieved for each rotation (two striking hammers 220 each strike twice), increasing the striking frequency to more than four times that of traditional devices. The principle of buffered reciprocating impact: After being struck by the hammerhead 240, the fixed plate 330 slides along the slide rail 310 with the slider 320, causing the arc-shaped fixed plate 330 and the elastic element 340 to move closer to the furnace body 100. The impact head 350 strikes the side wall of the furnace body 100 to achieve material stripping. At the same time, the elastic element 340 is compressed and stores potential energy. When the impact force disappears, the elastic element 340 releases potential energy to drive the slider 320 to reset, and the impact head 350 strikes the furnace body 100 a second time, forming the effect of "one strike and two impacts" and avoiding direct contact between the hammerhead 240 and the furnace body 100, thus achieving buffer protection. Uniform impact coverage principle: The arc-shaped fixed plate 330 is concentric with the furnace body 100. With the help of multiple evenly distributed elastic elements 340 and impact heads 350, it can form a multi-point uniform impact on the circumference of the furnace body 100, eliminating the "impact blind zone" of traditional devices. The principle of quick replacement of vulnerable parts: The hammer head 240 is connected by bolts. After wear, it can be replaced simply by unscrewing the bolts, without having to disassemble the entire hammer 220, which greatly shortens the maintenance time. The usage method is as follows: Device installation and commissioning: Weld the two support bases 210 to the preset positions on the outer side wall of the furnace body 100 discharge port, and hinge the T-shaped hammer 220 to ensure that the hammer swings without jamming; weld the slide rail 310 to the corresponding position on the furnace body 100, assemble the slider 320 and the arc-shaped fixing plate 330, and fix the elastic element 340, support plate 370 and impact head 350 on the mounting plate 360. Adjust the pre-compression amount of the elastic element 340 (for example, the compression amount can be controlled at 5-10mm) to ensure that the gap between the impact head 350 and the side wall of the furnace body 100 is appropriate (for example, it can be 2-3mm). Operation: Start the rotary kiln (the drive motor for the kiln body 100 is a Y2-200L1-6 type from Jiangsu Dazhong Electric Co., Ltd.). The rotation of the kiln body 100 drives the striking mechanism 200 and the impact assembly to rotate synchronously. The striking hammer 220 swings and strikes the slider 320, driving the impact head 350 to reciprocate and strike the kiln body 100. The elastic element 340 continuously releases potential energy to achieve high-frequency impact, peeling off the materials adhering to the inner wall. Maintenance: Periodically stop the machine to check the wear of hammer head 240. When it is worn, unscrew the bolt and replace it with a new hammer head 240. If the elastic element 340 fails due to fatigue, replace the corresponding elastic element 340 (generally, the spring replacement cycle is about 3 months and the elastic plate about 6 months). Parameter adjustment: For different viscous materials, the elastic element 340 with different stiffness can be replaced (for high-viscosity materials, use a 60Si2Mn spring with greater stiffness, and for low-viscosity materials, use a tin bronze elastic sheet), or the weight of the hammer 220 and hammer head 240 can be adjusted (by adding or removing counterweights) to change the striking force.

[0029] This utility model can achieve efficient and high-frequency striking of the furnace body 100 by using the striking mechanism 200 in conjunction with the reciprocating impact component 300, thereby knocking off the material adhering to the inner wall of the furnace body 100. This avoids the problem of the striking mechanism 200 inevitably failing to strike the furnace body 100, which would lead to weakened vibration of the furnace body 100. It reduces the impact blind zone and greatly improves the cleaning of material adhering to the inner wall of the rotary kiln.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for preventing material from adhering to the wall of a rotary kiln, characterized in that: The rotary kiln includes a striking mechanism (200) and a reciprocating impact assembly (300) mounted on the outer wall of the kiln body (100). The striking mechanism (200) is hinged to the outer wall of the kiln body (100). The striking mechanism (200) can strike the reciprocating impact assembly (300) due to its own gravity under the drive of the rotating kiln body (100). The reciprocating impact assembly (300) includes a slide rail (310) mounted on the outer wall of the kiln body (100). A slider (320) is slidably mounted in the slide rail (310). A fixing plate (330) is mounted on the slider (320). An elastic element (340) is mounted on the inner wall of the fixing plate (330). An impact head (350) is mounted at the end of the output shaft of the elastic element (340).

2. The device for preventing material adhesion inside a rotary kiln as described in claim 1, characterized in that: The striking mechanism (200) includes a support base (210) disposed on the outer wall of the furnace body (100), and a striking hammer (220) is hinged on the support base (210).

3. The device for preventing material adhesion inside a rotary kiln as described in claim 2, characterized in that: The hammer (220) has a T-shaped cross-section, and the vertical part of the hammer (220) is hinged to the support base (210) via a hinge shaft (230). The horizontal part of the hammer (220) is provided with hammerheads (240) at both ends.

4. The device for preventing material adhesion inside a rotary kiln as described in claim 1, characterized in that: The fixing plate (330) has an arc-shaped structure, and the center of the fixing plate (330) coincides with the center of the rotary kiln.

5. The device for preventing material adhesion inside a rotary kiln as described in claim 1, characterized in that: There are two striking mechanisms (200), which are evenly distributed on the outer wall of the furnace body (100) at the discharge port of the rotary kiln.

6. The device for preventing material adhesion inside a rotary kiln as described in claim 5, characterized in that: There are also two reciprocating impact components (300), and the striking mechanism (200) and the reciprocating impact components (300) are distributed at intervals on the outer side wall of the furnace body (100).

7. The device for preventing material adhesion inside a rotary kiln as described in claim 2, characterized in that: The inner sidewall of the fixing plate (330) is provided with a plurality of mounting plates (360), each mounting plate (360) is provided with an elastic element (340), each elastic element (340) is provided with a support plate (370) at its end, and each support plate (370) is provided with an impact head (350) at its end.

8. The device for preventing material adhesion inside a rotary kiln as described in claim 1, characterized in that: The elastic element (340) is a spring.

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