A feeding box for a rotary kiln preheater

Abstract

This application provides a feeding box for a rotary kiln preheater, relating to the field of cement clinker production technology. It includes a box body with a discharge port on one side and a feed port on the top. A feeding plate is inclinedly arranged inside the box body, with its upper end rotatably connected to the box body and its lower end movably passing through the discharge port. An elastic support assembly and a drive assembly are provided on the box body. The elastic support assembly contacts the lower part of the feeding plate, and the drive assembly drives the elastic support assembly to reciprocate and lift the lower part of the feeding plate. This invention, through the cooperation of the elastic support assembly and the drive assembly, causes the feeding plate to reciprocate and collide with the material, effectively breaking up the agglomeration of material particles, improving the uniformity of material dispersion, avoiding material accumulation or sparse distribution, improving the heat exchange efficiency between the material and high-temperature flue gas, and ensuring the stability of subsequent calcination processes.

Description

Technical Field

[0001] This application relates to the field of cement clinker production technology, and more specifically, to a feeding box for a rotary kiln preheater. Background Technology

[0002] In the cement industry, the rotary kiln is a key thermal equipment for calcining and roasting materials. To improve energy efficiency and reduce energy consumption, rotary kilns are usually equipped with preheaters. These preheat the materials entering the kiln through heat exchange with high-temperature flue gas, thereby shortening calcination time and reducing fuel consumption. In the preheater system, the material spreading box is the core component for enhancing heat exchange. Its function is to evenly spread the cement raw materials, slag, and other materials transported from the upstream equipment into the hot air flow channel, allowing the materials to fully contact the high-temperature flue gas and maximizing the heat exchange area, thus improving preheating efficiency.

[0003] In the existing technology, the feeding box of the rotary kiln preheater usually adopts a simple box structure. It is usually equipped with a fixed feeding plate inside. After the material enters the feeding box through the feed inlet, it falls by gravity and impacts the feeding plate, causing the material to be dispersed and discharged.

[0004] However, due to the material's own gravity and the agglomeration between particles, the above-mentioned traditional feeding box structure is unable to evenly disperse the material into fine particles or thin layers, resulting in some material accumulation and some sparse material in some areas, causing insufficient heat exchange, large fluctuations in preheating temperature, and affecting the stability of subsequent calcination processes. Summary of the Invention

[0005] The purpose of this application is to provide a feeding box for a rotary kiln preheater, which can solve the technical problems mentioned in the background art.

[0006] This application provides a material spreading box for a rotary kiln preheater, including a box body, a discharge port on one side of the box body, a feed port on the top side of the box body, a spreading plate inclinedly arranged inside the box body, the upper end of the spreading plate being rotatably connected to the box body, and the lower end of the spreading plate movably passing through the discharge port. The box body is provided with an elastic support assembly and a driving assembly. The elastic support assembly is in contact with the lower part of the spreading plate, and the driving assembly is used to drive the elastic support assembly to reciprocate to lift the lower part of the spreading plate.

[0007] Furthermore, the elastic support assembly includes a support rod, a spring, and a transmission plate. The support rod is movably disposed within the housing, with its lower end penetrating the bottom of the housing and extending to the outside of the housing. The upper end of the support rod contacts and abuts against the lower part of the material spreading plate. The transmission plate is fixed to the lower end of the support rod, and the spring is sleeved on the support rod and located between the transmission plate and the bottom of the housing.

[0008] Furthermore, there are two of each of the support rods and springs, with each support rod corresponding to one of the two springs, and the two support rods are spaced apart.

[0009] Furthermore, guide sleeves are fixedly provided at the through-connection points between the bottom of the housing and each of the support rods, and the support rods are movably inserted into the corresponding guide sleeves.

[0010] Furthermore, the drive assembly includes a drive motor, an eccentric wheel, and a mounting base. The drive motor is fixedly mounted on the bottom of the housing via the mounting base. The eccentric wheel is fixed on the output shaft of the drive motor. The edge of the eccentric wheel is slidably connected to the transmission plate and pushes the transmission plate during rotation, thereby causing the support rod to move axially along the support rod.

[0011] Furthermore, an inspection port is provided on one side of the housing, and a suitable inspection door is provided at the inspection port.

[0012] Furthermore, the upper end of the support rod is provided with a high-temperature resistant rubber sleeve.

[0013] The beneficial effects of this utility model are:

[0014] This invention uses an elastic support component and a drive component to make the spreading plate reciprocate and collide with the material, which can effectively break the agglomeration between material particles, improve the uniformity of material dispersion, avoid material accumulation or sparse distribution, improve the heat exchange efficiency between the material and the high-temperature flue gas, and ensure the stability of the subsequent calcination process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0017] Figure 2 These are cross-sectional views of some embodiments of this application;

[0018] Figure 3 This is a right view in some embodiments of this application;

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Box body; 11. Discharge port; 12. Inlet port; 2. Spreading plate; 3. Elastic support assembly; 31. Support rod; 32. Spring; 33. Transmission plate; 4. Drive assembly; 41. Drive motor; 42. Eccentric wheel; 43. Mounting base; 5. Guide sleeve; 6. Inspection door; 7. High temperature resistant rubber sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] 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.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 application is in use. They are only for the convenience of describing this application 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 application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances. Specific implementation examples:

[0028] like Figure 1-3 As shown, this application provides a material spreading box for a rotary kiln preheater, including a box body 1. One side of the box body 1 has a discharge port 11, and the top side of the box body 1 has a feed port 12. A spreading plate 2 is inclinedly arranged inside the box body 1. The upper end of the spreading plate 2 is rotatably connected to the box body 1, and the lower end of the spreading plate 2 movably passes through the discharge port 11. An elastic support assembly 3 and a driving assembly 4 are provided on the box body 1. The elastic support assembly 3 contacts and abuts against the lower part of the spreading plate 2, and the driving assembly 4 drives the elastic support assembly 3 to reciprocate and lift the lower part of the spreading plate 2. Specifically, a rotating shaft is fixedly provided at the upper end of the spreading plate 2, and the two ends of the rotating shaft are rotatably connected to the corresponding side walls of the box body 1. After the material enters from the feed port 12 on the top side of the box body 1, it falls onto the inclined spreading plate 2 inside the box body 1. On the material plate 2, the material moves towards the lower end of the material plate 2 under its own gravity and the tilt angle of the material plate 2. At the same time, the drive component 4 drives the elastic support component 3 to reciprocate to lift the lower part of the material plate 2, causing the material plate 2 to swing back and forth around the axis. The swing of the material plate 2 creates a continuous vibration and pushing effect on the material on the material plate 2, causing the material to be dispersed and discharged from the discharge port 11 as it moves towards the discharge port 11. The reciprocating swing of the material plate 2 by the elastic support component 3 and the drive component 4 and the collision with the material can effectively break the agglomeration between material particles, improve the dispersion uniformity of the material, avoid the accumulation or sparse distribution of the material, improve the heat exchange efficiency between the material and the high-temperature flue gas, and ensure the stability of the subsequent calcination process.

[0029] like Figure 2 and Figure 3As shown, the elastic support assembly 3 includes a support rod 31, a spring 32, and a transmission plate 33. The support rod 31 is movably disposed inside the housing 1. The lower end of the support rod 31 penetrates the bottom of the housing 1 and extends to the outside of the housing 1. The upper end of the support rod 31 contacts the lower part of the spreading plate 2. The transmission plate 33 is fixedly disposed on the lower end of the support rod 31. The spring 32 is sleeved on the support rod 31 and located between the transmission plate 33 and the bottom of the housing 1. Specifically, one end of the spring 32 is fixedly connected to the transmission plate 33, and the other end of the spring 32 is fixedly connected to the bottom of the housing 1. Initially, the spring 32 is in a pre-compressed state, driving the assembly. 4 is rotatably connected to the transmission plate 33. When the drive assembly 4 drives the transmission plate 33, the transmission plate 33 drives the support rod 31 to move along the axial direction of the support rod 31. The support rod 31 lifts the lower part of the spreading plate 2, causing the spreading plate 2 to rotate around the axis. At the same time, the spring 32 is compressed and accumulates elastic potential energy. When the driving force of the drive assembly 4 on the transmission plate 33 is removed, the spring 32 resets under the action of elastic potential energy, pushing the transmission plate 33 to drive the support rod 31 to move in the opposite direction. At this time, the spreading plate 2 resets under its own weight. Through the extension and contraction of the spring 32 and the drive of the drive assembly 4 on the transmission plate 33, the reciprocating swing of the spreading plate 2 is realized.

[0030] like Figure 3 As shown, there are two support rods 31 and two springs 32. The two support rods 31 correspond one-to-one with the two springs 32, and the two support rods 31 are spaced apart. The two support rods 31 jointly support the lower part of the spreading plate 2. When the drive assembly 4 drives the transmission plate 33, the two support rods 31 move synchronously along the axial direction under the elastic force of their respective springs 32. Through the spaced support points, the lower part of the spreading plate 2 is evenly stressed, realizing the reciprocating lifting action and making the spreading plate 2 swing smoothly.

[0031] like Figure 2 and Figure 3 As shown, guide sleeves 5 are fixedly installed at the bottom of the housing 1 and the through connection of each support rod 31. The support rod 31 is movably inserted into the corresponding guide sleeve 5. The setting of the guide sleeve 5 restricts the radial displacement of the support rod 31, so that the support rod 31 moves stably along its own axis, while reducing the friction and wear between the support rod 31 and the bottom of the housing 1, and extending the service life of related components.

[0032] like Figure 2 and Figure 3As shown, the drive assembly 4 includes a drive motor 41, an eccentric wheel 42, and a mounting base 43. The drive motor 41 is fixedly mounted on the bottom of the housing 1 via the mounting base 43. The eccentric wheel 42 is fixed on the output shaft of the drive motor 41. The edge of the eccentric wheel 42 is slidably connected to the transmission plate 33 and pushes the transmission plate 33 during rotation, thereby driving the support rod 31 to move along the axial direction of the support rod 31. Specifically, the mounting base 43 is fixed on the bottom of the housing 1, and the drive motor 41 is fixed on the mounting base 43. The drive motor 41 drives the eccentric wheel 42 to rotate, causing the eccentric wheel 42 to periodically push the transmission plate 33, thereby driving the support rod 31 to reciprocate along its own axial direction, thus realizing continuous driving of the lower part of the spreading plate 2.

[0033] like Figure 1-3 As shown, a maintenance port is provided on one side of the box 1, and a suitable maintenance door 6 is provided at the maintenance port. When it is necessary to inspect and maintain the components inside the material spreading box, the maintenance door 6 can be opened to carry out relevant operations, which makes it convenient for staff to inspect and maintain the components inside the box 1.

[0034] like Figure 2 As shown, the upper end of the support rod 31 is provided with a high-temperature resistant rubber sleeve 7; the high-temperature resistant rubber sleeve 7 can effectively reduce the impact wear between the support rod 31 and the spreading plate 2, and extend the service life of the support rod 31 and the spreading plate 2. At the same time, the elastic properties of the high-temperature resistant rubber sleeve 7 can reduce the noise generated by the collision.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A feeding box for a rotary kiln preheater, characterized in that: The device includes a housing, with a discharge port on one side and a feed port on the top side. A spreading plate is inclinedly arranged inside the housing, with its upper end rotatably connected to the housing and its lower end movably passing through the discharge port. The housing is equipped with an elastic support assembly and a drive assembly. The elastic support assembly contacts and abuts against the lower part of the spreading plate, and the drive assembly drives the elastic support assembly to reciprocate and lift the lower part of the spreading plate.

2. The feeding box for a rotary kiln preheater according to claim 1, characterized in that: The elastic support assembly includes a support rod, a spring, and a transmission plate. The support rod is movably disposed inside the housing. The lower end of the support rod passes through the bottom of the housing and extends to the outside of the housing. The upper end of the support rod contacts and abuts against the lower part of the material spreading plate. The transmission plate is fixed to the lower end of the support rod. The spring is sleeved on the support rod and located between the transmission plate and the bottom of the housing.

3. A feeding box for a rotary kiln preheater according to claim 2, characterized in that: There are two support rods and two springs, with each support rod corresponding to one of the two springs, and the two support rods are spaced apart.

4. A feeding box for a rotary kiln preheater according to claim 3, characterized in that: Guide sleeves are fixedly provided at the bottom of the box and the through connection of each of the support rods, and the support rods are movably inserted into the corresponding guide sleeves.

5. A feeding box for a rotary kiln preheater according to claim 2, characterized in that: The drive assembly includes a drive motor, an eccentric wheel, and a mounting base. The drive motor is fixedly mounted on the bottom of the housing via the mounting base. The eccentric wheel is fixed on the output shaft of the drive motor. The edge of the eccentric wheel is slidably connected to the transmission plate and pushes the transmission plate during rotation, thereby causing the support rod to move axially along the support rod.

6. A feeding box for a rotary kiln preheater according to claim 1, characterized in that: The enclosure has an inspection port on one side, and the inspection port is equipped with a suitable inspection door.

7. A feeding box for a rotary kiln preheater according to claim 3, characterized in that: The upper end of the support rod is equipped with a high-temperature resistant rubber sleeve.

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