A kind of high temperature working condition rotary kiln unblocking device

Abstract

This utility model discloses a rotary kiln unblocking device for high-temperature operation, belonging to the field of rotary kiln equipment. It includes a drive unit, a guide support, a transmission rod, an unblocking mechanism, a guide channel, and a feed inlet. The drive unit is mounted on the guide support, and the transmission rod passes through the guide support and is connected to the drive unit. The unblocking mechanism is mounted on the transmission rod. One end of the guide channel is fixedly connected to the guide support, and the other end is an open structure that extends into the rotary kiln and through the kiln tail to the cylinder. The feed inlet is located on the guide channel and extends to the outside of the rotary kiln. One end of the transmission rod extends into the guide channel. This utility model can effectively solve the bridging and blockage phenomenon at the feed inlet of a rotary kiln under high-temperature conditions, and its reasonable structural design will not affect the normal feeding operation of the rotary kiln.

Description

Technical Field

[0001] This utility model belongs to the field of rotary kiln equipment, and more specifically, relates to a rotary kiln unblocking device for high-temperature operating conditions. Background Technology

[0002] A rotary kiln is a tilted, rotatable steel cylinder lined with refractory materials. In high-temperature industries such as cement, steel, and non-ferrous metal smelting, the rotary kiln is considered the "heart" of the production line. During production, materials enter from the kiln tail and move forward under the influence of high-temperature airflow as the kiln rotates, completing physical and chemical reactions.

[0003] Due to the high-temperature operating conditions, some easily accumulated and poorly flowing materials can cause bridging and blockages inside the equipment. The frequency of bridging and blockages increases significantly at the feed point where there is a large accumulation of material. This is especially true for materials that are already at a high temperature before entering the rotary kiln, such as materials that have been heated to a certain temperature in the previous stage of equipment, which are more likely to cause bridging and blockages at the feed point.

[0004] Currently, the most popular unclogging devices on the market mainly employ methods such as airflow disc unclogging, nitrogen blowing, and mechanical manual unclogging. Traditional unclogging methods, such as airflow disc unclogging and nitrogen blowing, cannot operate in high-temperature environments, and some even require the equipment to be stopped before unclogging can be performed. Furthermore, waiting for the high-temperature equipment to cool down takes too long, affecting production. Traditional mechanical manual unclogging is prone to abrading the inner walls of the equipment, causing secondary damage.

[0005] Chinese patent application number CN201910668547.1, published on November 1, 2019, discloses a cement rotary kiln, including a base, a rotating structure, an oiling structure, a dust scraping structure, and an anti-clogging structure. While the rotating structure is rotating, the oiling structure drives the oiling structure to apply oil, thus ensuring sufficient lubrication and preventing increased friction or jamming due to excessive dust adhesion during operation. Simultaneously, the dust scraping structure installed on the base allows for timely cleaning of dust adhering to the rotating structure.

[0006] Although the above solution is equipped with a dust scraping structure that can clean dust from the rotating structure, it is mainly for treating dust on the rotating structure and is not suitable for bridging and blockage at the feed inlet of the rotary kiln.

[0007] Chinese patent application number CN202411376659.7, published on January 7, 2025, discloses a rotary kiln with self-cleaning capabilities, relating to the field of rotary kiln technology. Through the coordinated arrangement of a kiln body, a displacement structure, a first telescopic cylinder, a first sealing plate, a second telescopic cylinder, a second sealing plate, a mounting frame, a flame-spraying structure, and a water-spraying structure, it achieves self-cleaning capabilities. During cleaning, the flame-spraying and water-spraying structures are located inside the kiln body. The flame-spraying structure operates first, causing a rapid rise in the temperature of the ring formed on the inner wall of the kiln. The water-spraying structure then operates, spraying a high-pressure water jet onto the ring formed on the inner wall of the kiln. The ring is impacted and its temperature drops rapidly. This rapid cooling causes cracks to appear on the surface of the ring, and the surface pressure of the ring also increases, thus exacerbating the deterioration of the ring. The ring is then subjected to the high-pressure impact of the water, causing it to fall off. Simultaneously, the high-pressure water vaporizes suddenly at high temperature, producing a powerful explosion that shatters and collapses the ring on the inner wall of the kiln.

[0008] However, the above solution is only for treating ring formation on the inner wall of the kiln and is not applicable to bridging and blockage at the feed point. Furthermore, it cannot be used when the rotary kiln is operating normally, which would affect the production of the rotary kiln. Summary of the Invention

[0009] 1. The problem to be solved

[0010] To address the problem that existing rotary kiln unblocking devices cannot effectively handle, this utility model provides a rotary kiln unblocking device for high-temperature conditions. It can effectively solve the bridging and blockage phenomena at the feed point of the rotary kiln under high-temperature conditions, and its structure is reasonably designed so as not to affect the normal feeding operation of the rotary kiln.

[0011] 2. Technical Solution

[0012] To solve the above problems, the present invention adopts the following technical solution.

[0013] A rotary kiln unblocking device for high-temperature operation includes a drive unit, a guide support, a transmission rod, an unblocking mechanism, a guide channel, and a feed inlet. The drive unit is mounted on the guide support, and the transmission rod passes through the guide support and is connected to the drive unit for transmission. The unblocking mechanism is mounted on the transmission rod. One end of the guide channel is fixedly connected to the guide support, and the other end is an open structure that extends into the rotary kiln and through the kiln tail to the cylinder. The feed inlet is located on the guide channel and extends to the outside of the rotary kiln. One end of the transmission rod extends into the guide channel.

[0014] As a further improvement to the technical solution, the guide support is provided with a guide groove for the transmission rod to pass through.

[0015] As a further improvement to the technical solution, a driving device is installed at one end of the guide support, and a top cover is fixedly installed at the other end. The guide groove is fixedly connected to the top cover. The top cover has a through hole for the transmission rod to pass through.

[0016] As a further improvement to the technical solution, a packing sealing mechanism is installed at the through hole of the top cover for the transmission rod to pass through.

[0017] As a further improvement to the technical solution, the unblocking mechanism includes unblocking rods, and multiple unblocking rods are installed at intervals along the length of the transmission rod.

[0018] As a further improvement to the technical solution, multiple unblocking teeth are installed at intervals along the length of the unblocking rod.

[0019] As a further improvement to the technical solution, the cleaning teeth on two adjacent cleaning rods are arranged in an alternating pattern.

[0020] As a further improvement to the technical solution, the drive device adopts a cylinder.

[0021] As a further improvement to the technical solution, the transmission rod and the cylinder are connected by a Y-type cylinder connector.

[0022] As a further improvement to the technical solution, the unblocking device is fixedly installed on the rotary kiln via a flange.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] (1) This utility model provides a rotary kiln unblocking device for high-temperature working conditions. By setting a guide channel with a feed inlet, it can directly replace the feed inlet on the traditional rotary kiln without interfering with the original structure on the rotary kiln, ensuring normal feeding of the rotary kiln. On the other hand, the guide channel can ensure that the material is directly transported to the rotary kiln body, avoiding the material from scattering to the kiln tail during the conveying and unblocking process, causing the material to accumulate and be wasted at the kiln tail. In addition, unlike the traditional unblocking device that extends into or is installed on the original feed inlet or feed channel of the rotary kiln, this pre-designed structure is directly installed on the rotary kiln, which can make the contact between the unblocking mechanism and the feed channel in the best unblocking state designed, ensuring the unblocking effect.

[0026] (2) The present invention provides a rotary kiln unblocking device for high temperature working conditions. The guide support is provided with a guide groove to ensure the movement direction of the transmission rod. The cylinder is selected as the driving device and Y-type cylinder joint is used to connect with the transmission rod, so that the transmission rod can rotate within a certain angle with the joint. Thus, when encountering large pieces or materials with strong blockage, the transmission rod can be finely adjusted by itself to avoid forced operation and failure.

[0027] (3) The rotary kiln unblocking device for high temperature working conditions of this utility model has a top cover as a connecting part between the guide support and the guide groove, which can also play a certain sealing role to prevent the material from entering the guide support along the transmission rod and affecting the operation of the unblocking device. By setting a packing sealing mechanism, the sealing effect is further guaranteed without affecting the operation of the transmission rod.

[0028] (4) The present invention provides a rotary kiln unblocking device for high-temperature working conditions. By setting unblocking rods and unblocking teeth, it can effectively deal with the bridging and blockage of materials. The unblocking teeth on two adjacent unblocking rods are arranged in an alternating manner, which further improves the unblocking effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the unblocking device of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the unblocking device of this utility model installed on a rotary kiln;

[0031] In the diagram: 1. Drive unit; 2. Guide support; 3. Transmission rod; 4. Guide channel; 5. Feed inlet; 6. Top cover; 7. Packing sealing mechanism; 8. Unblocking rod. Detailed Implementation

[0032] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from its spirit and scope. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to provide the best mode for carrying out the invention and sufficient to enable those skilled in the art to practice it. Therefore, the scope of the present invention is defined only by the appended claims.

[0033] Example 1

[0034] A rotary kiln unblocking device for high-temperature operation is mainly used at the feed inlet of the rotary kiln to clear bridging and blockage of materials at the feed inlet. Its structure and technical effects are described in detail below.

[0035] like Figure 1 and Figure 2As shown, the unblocking device is fixedly installed on the rotary kiln via a flange. It includes a drive unit 1, a guide support 2, a transmission rod 3, and an unblocking mechanism. The drive unit 1 is mounted on the guide support 2, and the transmission rod 3 passes through the guide support 2 and is connected to the drive unit 1 for transmission. The unblocking mechanism is mounted on the transmission rod 3. The guide support 2 is provided with a guide groove for the transmission rod 3 to pass through, which can ensure the direction of movement of the transmission rod.

[0036] In this embodiment, the drive device 1 is a cylinder, and the transmission rod 3 is connected to the cylinder through a Y-type cylinder connector, so that the transmission rod 3 can rotate within a certain angle with the connector. Thus, when encountering large pieces or materials with strong obstruction, the transmission rod 3 can avoid failure caused by forced operation through its own fine adjustment.

[0037] The unblocking mechanism includes unblocking rods 8, and multiple unblocking rods 8 are spaced apart along the length of the transmission rod 3. Multiple unblocking teeth are also spaced apart along the length of each unblocking rod 8. The transmission rod 3 drives the unblocking rods 8 and the unblocking teeth to move, effectively handling material bridging and blockage. In this embodiment, the unblocking teeth on adjacent unblocking rods 8 are arranged in an alternating pattern, further improving the unblocking effect.

[0038] In addition, it includes a guide channel 4 and a feed inlet 5. One end of the guide channel 4 is fixedly connected to the guide support 2, and the other end is an open structure that extends into the rotary kiln and through the kiln tail to the cylinder. The feed inlet 5 is set on the guide channel 4 and extends to the outside of the rotary kiln, and one end of the drive rod 3 extends into the guide channel 4.

[0039] By setting up a guide channel 4 with a feed inlet 5, it can directly replace the feed inlet on the traditional rotary kiln, avoiding interference with the original structure and ensuring normal feeding. Furthermore, the guide channel 4 ensures that the material is directly conveyed to the rotary kiln shell, preventing material from scattering to the kiln tail during conveying and unblocking processes, thus avoiding material accumulation and waste. In addition, unlike traditional unblocking devices that extend into or are installed on the original feed inlet or feed channel of the rotary kiln, directly installing this pre-designed structure on the rotary kiln ensures that the contact between the unblocking mechanism and the feed channel is in the optimal unblocking state, guaranteeing effective unblocking.

[0040] The connection structure between the guide support 2 and the guide channel 4 is as follows: A drive device 1 is installed at one end of the guide support 2, and a top cover 6 is fixedly installed at the other end. The guide channel 4 is fixedly connected to the top cover 6. The top cover 6 has a through hole for the transmission rod 3 to pass through, and a packing sealing mechanism 7 for the transmission rod 3 to pass through is installed at the through hole.

[0041] The top cover 6 serves as a connector between the guide support 2 and the guide channel 4, and can play a certain sealing role to prevent materials from entering the guide support 2 along with the transmission rod 3, thus affecting the operation of the unblocking device. By setting the packing sealing mechanism 7, the sealing effect is further guaranteed without affecting the operation of the transmission rod 3.

[0042] In summary, the rotary kiln unblocking device for high-temperature operation described in this embodiment can effectively solve the bridging and blockage phenomena at the feed point of the rotary kiln under high-temperature conditions. Moreover, its structure is reasonably designed and will not affect the normal feeding operation of the rotary kiln.

Claims

1. A rotary kiln unblocking device for high-temperature operation, comprising a drive unit (1), a guide support (2), a transmission rod (3), and an unblocking mechanism, wherein the drive unit (1) is mounted on the guide support (2), the transmission rod (3) passes through the guide support (2) and is connected to the drive unit (1) for transmission, and the unblocking mechanism is mounted on the transmission rod (3), characterized in that: It also includes a guide channel (4) and a feed inlet (5); one end of the guide channel (4) is fixedly connected to the guide support (2), and the other end is an open structure that extends into the rotary kiln and through the kiln tail to the cylinder; the feed inlet (5) is set on the guide channel (4) and extends to the outside of the rotary kiln; one end of the transmission rod (3) extends into the guide channel (4).

2. The rotary kiln unblocking device for high-temperature operation according to claim 1, characterized in that: The guide support (2) is provided with a guide groove through which the transmission rod (3) passes.

3. The rotary kiln unblocking device for high-temperature operation according to claim 1, characterized in that: One end of the guide support (2) is equipped with a drive device (1), and the other end is fixedly equipped with a top cover (6). The guide groove (4) is fixedly connected to the top cover (6). The top cover (6) has a through hole for the transmission rod (3) to pass through.

4. The rotary kiln unblocking device for high-temperature operation according to claim 3, characterized in that: The top cover (6) is equipped with a packing seal mechanism (7) through which the transmission rod (3) passes.

5. The rotary kiln unblocking device for high-temperature operation according to claim 1, characterized in that: The unblocking mechanism includes unblocking rods (8), and multiple unblocking rods (8) are installed at intervals along the length of the transmission rod (3).

6. The rotary kiln unblocking device for high-temperature operation according to claim 5, characterized in that: The unblocking rod (8) has multiple unblocking teeth installed at intervals along its length.

7. A rotary kiln unblocking device for high-temperature operation according to claim 6, characterized in that: The cleaning teeth on two adjacent cleaning rods (8) are arranged in an alternating manner.

8. A rotary kiln unblocking device for high-temperature operation according to any one of claims 1-7, characterized in that: The drive device (1) is a cylinder.

9. A rotary kiln unblocking device for high-temperature operation according to claim 8, characterized in that: The transmission rod (3) is connected to the cylinder via a Y-type cylinder connector.

10. A rotary kiln unblocking device for high-temperature operation according to any one of claims 1-7, characterized in that: The unblocking device is fixedly installed on the rotary kiln via a flange.

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