A rotary kiln head and tail sealing device

Abstract

This utility model discloses a rotary kiln head and tail sealing device, relating to the technical field of limestone processing equipment. The utility model includes a kiln hood, the surface of which is decorated with fish-scale-like scales distributed circumferentially on one side. A kiln body is located on one side of the kiln hood, extending into the inner cavity of the kiln hood. A pressing mechanism is provided on the surface of the kiln hood. This utility model uses a pressing mechanism to quickly press the fish-scale scales together. Simultaneously, an adjustable pressure plate structure allows for flexible adjustment based on the installation position of the fish-scale scales, effectively ensuring the sealing effect of the rotary kiln using the fish-scale sealing structure. This ensures that the fish-scale scales maintain good sealing contact at all times, guaranteeing that the sealing performance is unaffected by changes in the rotary kiln's operating state. This not only improves the stability of equipment operation but also reduces product quality fluctuations caused by poor sealing.

Description

Technical Field

[0001] This utility model belongs to the technical field of limestone processing equipment, and in particular relates to a rotary kiln head and kiln tail sealing device. Background Technology

[0002] In the limestone processing industry, the rotary kiln, as a core piece of equipment, shoulders the crucial mission of calcining limestone into products such as lime. However, the sealing process at the kiln head and tail faces many challenging problems in actual production. During limestone processing, the interior of the rotary kiln is in a high-temperature environment, typically exceeding 1000°C. This places stringent requirements on the high-temperature resistance of sealing materials. Conventional sealing materials are prone to aging, deformation, and embrittlement under such high temperatures, leading to a sharp decline in sealing performance.

[0003] Chinese patent CN218270140U discloses a sealing device for the kiln head and tail of a rotary kiln, including an annular protective cover with several fish-scale steel plates at the end of the cover. The cover has a first sealing mechanism inside, comprising a wear-resistant sleeve. A baffle A is coaxially mounted on the outer wall of the wear-resistant sleeve, and baffles B and C, coaxially fixed to the inner wall of the cover, are spaced apart at both ends of baffle A. The wear-resistant sleeve is sealed at the end of the rotary kiln cylinder. The upper ends of the several fish-scale steel plates are sealed and bolted to the cover, while the lower ends are sealed to the wear-resistant sleeve via steel wire ropes. This forms a labyrinth structure through the first sealing mechanism, reducing the pressure of flue gas on the fish-scale steel plates and improving the overall sealing performance.

[0004] However, rotary kilns generate a large amount of dust during limestone processing. These dust particles are ubiquitous and can easily enter the gaps in the sealing device. The presence of dust exacerbates the wear of the sealing components, causing the originally precise sealing gaps to continuously increase, which in turn leads to gas leakage. The rotary kiln in the aforementioned patented technology lacks the function of cleaning dust, and the use of steel wire ropes for reinforcement is not flexible enough and can easily reduce the sealing effect. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary kiln head and tail sealing device, which solves the problem of a large amount of dust being generated and the lack of dust removal function in the existing technology during limestone processing by the cooperation of a pressing mechanism and a dust removal mechanism.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a rotary kiln head and tail sealing device, comprising a kiln hood, the surface of which is provided with fish scales distributed circumferentially on one side of the kiln hood, a kiln body being provided on one side of the kiln hood, one side of the kiln body extending into the inner cavity of the kiln hood, a pressing mechanism being provided on the surface of the kiln hood, an annular groove being formed on one side of the kiln hood, and a dust removal mechanism being provided in the inner cavity of the annular groove, the pressing mechanism including a connecting plate, one side of which is fixedly connected to the kiln hood, a connecting block being fixedly connected to the top of the connecting plate, a connecting rod being movably connected to the top of the connecting block via a rotating shaft, a fastening rod being movably connected to the surface of the connecting rod, and a pressure plate being movably connected to the bottom of the fastening rod via a bearing, the bottom of the pressure plate... The part contacts the fish scales. The dust removal mechanism includes an annular tube, which is located inside the annular groove. One side of the annular tube is connected to a suction pipe, and the other side is connected to a conveying pipe. The other side of the conveying pipe is connected to a negative pressure dust collector. An annular dust collection trough is set on one side of the kiln hood. The dust collection trough is connected to the dust removal mechanism. When the rotary kiln is running, the generated dust is sucked into the dust collection trough under the action of airflow and then discharged through the dust removal mechanism to prevent dust from accumulating in the sealed area. At the same time, multiple labyrinth-type dust barrier sheets are set inside the sealing structure. The surface of these barrier sheets has been specially smoothed, making it difficult for dust particles to adhere after contacting the barrier sheets, further preventing dust from entering the sealing gap and reducing wear on the sealing components.

[0008] The present invention is further configured such that a dust collection trough is provided on one side of the kiln hood, and one side of the dust suction pipe extends into the inner cavity of the dust collection trough. The dust collection trough is used to collect dust, which effectively reduces dust emissions, reduces environmental pollution, and meets environmental protection requirements.

[0009] The present invention is further configured such that a spring is sleeved on the surface of the fastening rod, and a limiting plate is fixedly connected to the surface of the fastening rod. The top of the spring contacts the limiting plate. The arrangement of the spring and the limiting plate can ensure that the pressure plate is always in contact with the fish scales, thus ensuring the stability of the fish scale positioning. Compared with the traditional method of fixing with steel cables, it has the effect of convenient adjustment and will not cause displacement.

[0010] The present invention is further configured such that a groove is formed on the surface of the connecting rod, and the surface of the fastening rod is slidably connected to the groove, so that the fastening rod can slide on the surface of the groove, thereby enabling the fastening rod to have a convenient adjustment function and improving the flexibility of the fastening rod in use.

[0011] The present invention is further provided with a buffer pad on one side of the pressure plate. The buffer pad is made of rubber and is used to contact the fish scales, which increases the wear resistance and improves the sealing performance.

[0012] The present invention is further configured such that the suction tubes are circumferentially distributed on the surface of the annular tube, the suction tubes are equidistant from each other, and the suction tubes are arranged in a circular array, which improves the suction effect of the suction tubes.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model can quickly press the fish scales through the pressing mechanism. At the same time, the adjustable pressure plate structure can be flexibly adjusted according to the installation position of the fish scales, which effectively ensures the sealing effect of the rotary kiln with the fish scale sealing structure. This ensures that the fish scales always maintain good sealing contact and that the sealing performance is not affected by changes in the operating state of the rotary kiln. This not only improves the stability of equipment operation, but also reduces product quality fluctuations caused by poor sealing.

[0015] 2. This utility model generates negative pressure airflow through a negative pressure vacuum cleaner. The negative pressure airflow is transported to the interior of the annular pipe and the suction pipe through the delivery pipe. The dust generated can be sucked into the dust collection tank under the action of the airflow through the suction pipe, and then discharged through the negative pressure vacuum cleaner. This prevents dust from accumulating in the sealed area, reduces the wear of dust on the sealing components, extends the service life of the sealing device, reduces maintenance costs and the risk of production interruption, and at the same time reduces dust pollution to the environment and improves the working environment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional diagram of a rotary kiln head and tail sealing device.

[0018] Figure 2 This is a side perspective view of a rotary kiln head and tail sealing device.

[0019] Figure 3 In a rotary kiln head and tail sealing device Figure 2 Enlarged view of point A.

[0020] Figure 4 This is a three-dimensional diagram of a dust removal structure in a rotary kiln head and tail sealing device.

[0021] Figure 5 This is a three-dimensional view of the pressing mechanism in a rotary kiln head and tail sealing device.

[0022] In the attached diagram: 1. Kiln hood; 2. Fish scale pattern; 3. Kiln body; 4. Pressing mechanism; 401. Connecting plate; 402. Connecting block; 403. Connecting rod; 404. Fastening rod; 405. Pressure plate; 5. Annular groove; 6. Dust removal mechanism; 601. Annular pipe; 602. Dust suction pipe; 603. Conveying pipe; 604. Negative pressure dust collector; 7. Dust collection trough; 8. Spring; 9. Limiting plate; 10. Slide groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figure 1-5 This utility model relates to a rotary kiln head and tail sealing device, comprising a kiln hood 1, the surface of which is provided with fish scales 2, which are circumferentially distributed on one side of the kiln hood 1. A kiln body 3 is provided on one side of the kiln hood 1, extending into the inner cavity of the kiln hood 1. A pressing mechanism 4 is provided on the surface of the kiln hood 1. An annular groove 5 is formed on one side of the kiln hood 1, and a dust removal mechanism 6 is provided in the inner cavity of the annular groove 5. The pressing mechanism 4 includes a connecting plate 401, one side of which is fixedly connected to the kiln hood 1, and the top of the connecting plate 401 is fixedly connected to a connecting... Block 402, the top of the connecting block 402 is movably connected to the connecting rod 403 via a rotating shaft, the surface of the connecting rod 403 is movably connected to the fastening rod 404, the bottom of the fastening rod 404 is movably connected to the pressure plate 405 via a bearing, the bottom of the pressure plate 405 is in contact with the fish scale 2, the dust removal mechanism 6 includes an annular tube 601, the annular tube 601 is disposed in the inner cavity of the annular groove 5, one side of the annular tube 601 is connected to the suction pipe 602, one side of the annular tube 601 is connected to the conveying pipe 603, one side of the conveying pipe 603 is connected to the negative pressure vacuum cleaner 604.

[0026] Specifically: A ring-shaped dust collection trough 7 is set on one side of the kiln hood 1. The dust collection trough 7 is connected to the dust removal mechanism 6. When the rotary kiln is running, the dust generated is sucked into the dust collection trough 7 under the action of airflow, and then discharged through the dust removal mechanism 6 to prevent dust from accumulating in the sealed area. At the same time, multiple layers of labyrinth-type dust barrier plates are set inside the sealing structure. The surface of these barrier plates has been specially smoothed, making it difficult for dust particles to adhere after contacting the barrier plates, further preventing dust from entering the sealing gap and reducing wear on the sealing components.

[0027] Example 2

[0028] Please see Figure 1-5Based on Embodiment 1, a dust collection groove 7 is provided on one side of the kiln hood 1, and one side of the dust collection pipe 602 extends into the inner cavity of the dust collection groove 7. A spring 8 is sleeved on the surface of the fastening rod 404, and a limiting plate 9 is fixedly connected to the surface of the fastening rod 404. The top of the spring 8 contacts the limiting plate 9. A sliding groove 10 is provided on the surface of the connecting rod 403, and the surface of the fastening rod 404 is slidably connected to the sliding groove 10. A buffer pad is provided on one side of the pressure plate 405. The buffer pad is made of rubber. The dust collection pipes 602 are circumferentially distributed on the surface of the annular pipe 601, and the dust collection pipes 602 are equidistant from each other.

[0029] Specifically: the dust collection trough 7 is used to collect dust, effectively reducing dust emissions and environmental pollution, meeting environmental protection requirements; the spring 8 and the limiting plate 9 ensure that the pressure plate 405 is always in contact with the fish scale 2, ensuring the stability of the fish scale 2's positioning; compared with the traditional method of fixing with steel cables, it has the effect of convenient adjustment and will not have the phenomenon of displacement; the fastening rod 404 can slide on the surface of the slide groove 10, giving the fastening rod 404 a convenient adjustment function and improving the flexibility of the fastening rod 404's use; the buffer pad is used to contact the fish scale 2, increasing the wear resistance and improving the sealing performance; the suction pipe 602 is distributed in a circular array, improving the suction effect of the suction pipe 602.

[0030] The working principle of this utility model is as follows: the fastening rod 404 is rotated by an external tool, which drives the pressure plate 405 to descend. The pressure plate 405 reinforces the fish scale 2. At the same time, the fastening rod 404 can slide on the surface of the connecting rod 403 through the sliding groove 10. The fastening rod 404 is positioned according to the fixed position, ensuring the stability of the fastening rod 404 installation. By starting the negative pressure vacuum cleaner 604, a negative pressure airflow is generated. The negative pressure airflow is transported to the interior of the annular pipe 601 and the suction pipe 602 through the conveying pipe 603. The dust generated can be sucked into the dust collection tank 7 under the action of the airflow through the suction pipe 602, and then discharged through the negative pressure vacuum cleaner 604, preventing dust from accumulating in the sealing area, reducing the wear of dust on the sealing components, and extending the service life of the sealing device.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to specific implementation methods. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A rotary kiln head and tail sealing device, comprising a kiln hood (1), characterized in that: The surface of the kiln cover (1) is provided with fish scales (2), which are distributed circumferentially on one side of the kiln cover (1). A kiln body (3) is provided on one side of the kiln cover (1), and one side of the kiln body (3) extends into the inner cavity of the kiln cover (1). A pressing mechanism (4) is provided on the surface of the kiln cover (1). An annular groove (5) is opened on one side of the kiln cover (1), and a dust removal mechanism (6) is provided in the inner cavity of the annular groove (5). The pressing mechanism (4) includes a connecting plate (401), one side of which is fixedly connected to the kiln cover (1), a connecting block (402) is fixedly connected to the top of the connecting plate (401), a connecting rod (403) is movably connected to the top of the connecting block (402) via a rotating shaft, a fastening rod (404) is movably connected to the surface of the connecting rod (403), and a pressure plate (405) is movably connected to the bottom of the fastening rod (404) via a bearing, and the bottom of the pressure plate (405) is in contact with the fish scales (2). The dust removal mechanism (6) includes an annular tube (601), which is disposed in the inner cavity of the annular groove (5). A suction pipe (602) is connected to one side of the annular tube (601), a conveying pipe (603) is connected to one side of the annular tube (601), and a negative pressure vacuum cleaner (604) is connected to one side of the conveying pipe (603).

2. The rotary kiln head and tail sealing device according to claim 1, characterized in that: A dust collection trough (7) is provided on one side of the kiln hood (1), and one side of the dust suction pipe (602) extends into the inner cavity of the dust collection trough (7).

3. The rotary kiln head and tail sealing device according to claim 1, characterized in that: A spring (8) is sleeved on the surface of the fastening rod (404), and a limiting plate (9) is fixedly connected to the surface of the fastening rod (404). The top of the spring (8) is in contact with the limiting plate (9).

4. The rotary kiln head and tail sealing device according to claim 1, characterized in that: The surface of the connecting rod (403) is provided with a groove (10), and the surface of the fastening rod (404) is slidably connected to the groove (10).

5. The rotary kiln head and tail sealing device according to claim 1, characterized in that: A buffer pad is provided on one side of the pressure plate (405), and the buffer pad is made of rubber.

6. The rotary kiln head and tail sealing device according to claim 1, characterized in that: The suction pipes (602) are circumferentially distributed on the surface of the annular pipe (601), and the suction pipes (602) are equidistant from each other.

Images