Rotary kiln sealing device

Abstract

The utility model provides a rotary kiln sealing device, include: base, support mechanism, rotary kiln cylinder and sealing mechanism, wherein, support mechanism sets up on the base, rotary kiln cylinder sets up on the base through support mechanism. Rotary kiln sealing device of the utility model embodiment, through in the fish scale group winding a circle flexible sealing piece, effectively reduce the air leakage and material leakage to strengthen the sealing performance, and the outside winding of flexible sealing piece has the gasbag, through the water pipe to the gasbag in delivery cold water, make the gasbag expansion extrusion flexible sealing piece, push flexible sealing piece more closely adhere to the fish scale group outer wall, avoid rigid extrusion caused flexible sealing piece damage, and the cold water circulation flow in the gasbag, can synchronous absorption the heat that sealing area produced, effectively reduce the working temperature of fish scale group and flexible sealing piece, avoid the material ageing, elasticity attenuation or deformation failure caused by high temperature, prolong the life.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and in particular to a rotary kiln sealing device. Background Technology

[0002] Rotary kilns, as core equipment in building materials, metallurgy, chemical and other fields, are mainly used for calcination, roasting and other processes of materials. During operation, a specific temperature and pressure environment must be maintained inside the kiln to ensure the material processing effect. The rotary kiln sealing device, as a key supporting component, is used to seal the gap between the rotary kiln cylinder and the fixed structure to prevent high-temperature flue gas and dust from leaking out of the kiln and cold air from entering, which directly affects the energy consumption and environmental performance of the equipment.

[0003] Among related technologies, fish-scale sealing is currently a widely used method. It involves stacking multiple layers of metal scales, with adjacent scales overlapping or nesting. One end is fixed to the rotary kiln body via a connector, while the other end seals against structures such as the fixed smoke chamber and kiln head hood. To ensure the stability and effectiveness of the fish-scale seal, a steel cable is often used to suspend a weight, allowing the fish-scales to adhere more tightly to the sealing surface at the kiln tail. However, the rotation of the rotary kiln causes vibration, which can loosen the connection between the steel cable and the suspended weight, leading to cable slippage and hindering the sealing of the kiln tail. Furthermore, with prolonged operation of the rotary kiln, the sealing area is exposed to high temperatures, causing deformation and a decrease in sealing effectiveness, thus affecting material production. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to propose a rotary kiln sealing device that utilizes cold water circulating within the air bladder to absorb the heat generated in the sealing area, effectively reducing the working temperature of the fish scale assembly and the flexible seal, thus preventing material aging caused by high temperatures. At the same time, the expanding air bladder will compress the flexible seal, pushing it to fit more tightly against the outer wall of the fish scale assembly, avoiding damage to the flexible seal caused by rigid compression, and improving sealing performance.

[0006] To achieve the above objectives, the first aspect of this utility model provides a rotary kiln sealing device, comprising: a base, a support mechanism, a rotary kiln body, and a sealing mechanism, wherein the support mechanism is disposed on the base; the rotary kiln body is disposed on the base via the support mechanism; the sealing mechanism includes a connecting component, a fish-scale plate assembly, and a pressing component, wherein the connecting component is disposed on the base; the fish-scale plate assembly is disposed within the connecting component; and the pressing component is disposed within the connecting component via the fish-scale plate assembly.

[0007] In addition, the rotary kiln sealing device proposed above according to this utility model may also have the following additional technical features: Specifically, the support mechanism includes a base plate and two rollers, wherein the base plate is disposed on the base; the two rollers are symmetrically disposed on the base, and the rollers are in contact with the outer wall of the rotary kiln cylinder.

[0008] Specifically, the connecting assembly includes two supports, a fixed section, a connecting rod, and an outer plate, wherein the two supports are symmetrically arranged on the base; the fixed section is mounted on the base via the supports; the connecting rod is disposed on the side wall of the fixed section; and the outer plate is mounted on the fixed section via the connecting rod.

[0009] Specifically, the clamping assembly includes a flexible seal and an airbag, wherein the flexible seal is disposed on the fish scale assembly; and the airbag is disposed on the fish scale assembly via the flexible seal.

[0010] Specifically, the airbag is connected to an inlet pipe and an outlet pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The rotary kiln sealing device of the present invention effectively reduces air and material leakage and enhances sealing performance by wrapping a flexible sealing element around the fish scale assembly. Furthermore, an air bladder is wrapped around the outside of the flexible sealing element. Cold water is supplied to the air bladder through the water inlet pipe, causing the air bladder to expand and compress the flexible sealing element, pushing the flexible sealing element to fit more tightly against the outer wall of the fish scale assembly. This avoids damage to the flexible sealing element caused by rigid compression. Moreover, when the cold water circulates in the air bladder, it can simultaneously absorb the heat generated in the sealing area, effectively reducing the working temperature of the fish scale assembly and the flexible sealing element, avoiding material aging, elasticity decay, or deformation failure caused by high temperature, and extending service life.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of a rotary kiln sealing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the rotary kiln sealing device support mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the main cross-section of a rotary kiln sealing device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the sealing mechanism of a rotary kiln sealing device according to an embodiment of the present invention.

[0014] Reference numerals: 1. Base; 2. Support mechanism; 21. Base plate; 22. Support roller; 3. Rotary kiln body; 4. Sealing mechanism; 41. Connecting assembly; 411. Support; 412. Fixed section; 413. Connecting rod; 414. Outer plate; 42. Fish scale assembly; 43. Pressing assembly; 431. Flexible seal; 432. Airbag; 4321. Inlet pipe; 4322. Outlet pipe. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] The rotary kiln sealing device of this utility model is described below with reference to the accompanying drawings.

[0017] like Figures 1-4 As shown in the figure, a rotary kiln sealing device according to an embodiment of the present invention includes: a base 1, a support mechanism 2, a rotary kiln cylinder 3, and a sealing mechanism 4.

[0018] It should be noted that the base 1 described in this embodiment has a pre-embedded hole at the bottom for connection with the ground foundation. By passing bolts through the pre-embedded hole and connecting them to the ground, the overall stability of the device during operation is ensured.

[0019] The support mechanism 2 is mounted on the base 1, and the rotary kiln cylinder 3 is mounted on the base 1 via the support mechanism 2. The sealing mechanism 4 includes a connecting component 41, a fish scale assembly 42, and a pressing component 43. The connecting component 41 is mounted on the base 1, the fish scale assembly 42 is mounted inside the connecting component 41, and the pressing component 43 is mounted inside the connecting component 41 via the fish scale assembly 42.

[0020] It should be noted that the fish scale assembly 42 described in this embodiment is detachably connected to the connecting component 41 by bolts. The fish scale assembly 42 is composed of multiple stainless steel scales stacked and arranged in a circumferential direction. A graphite sealing block is provided at the end of the fish scale assembly 42 away from the connecting component 41. The graphite sealing block fits into the rotary kiln cylinder 3, which improves the sealing performance.

[0021] Specifically, when the base 1 is secured to the ground, the support mechanism 2 can lift the rotary kiln body 3, ensuring that the rotary kiln body 3 can rotate freely.

[0022] At the same time, the fish scale assembly 42 is fixed to the outside of the rotary kiln cylinder 3 by the connecting component 41 and tightened by bolts, so that the graphite sealing block at the end of the fish scale assembly 42 is tightly fitted to the outer wall of the rotary kiln cylinder 3, forming the first sealing barrier, effectively preventing the leakage of flue gas and dust inside the kiln.

[0023] At the same time, the clamping component 43 applies pressure to the fish scale assembly 42, causing the fish scale assembly 42 to undergo slight elastic deformation, further improving the fit between the graphite sealing block and the outer wall of the kiln cylinder, and avoiding gaps.

[0024] In one embodiment of this utility model, such as Figure 2 As shown, the support mechanism 2 includes a base plate 21 and two rollers 22. The base plate 21 is mounted on the base 1, and the two rollers 22 are symmetrically mounted on the base 1. The rollers 22 are in contact with the outer wall of the rotary kiln cylinder 3.

[0025] It is understood that the bottom plate 21 described in this embodiment is provided with an elastic telescopic rod, so that the support roller 22 can adapt to the slight jumping of the rotary kiln body 3 during operation, ensuring that the support roller 22 always maintains a tight support state with the outer wall of the rotary kiln body 3.

[0026] Specifically, in the initial state, the compression spring built into the elastic telescopic rod is in a slightly pre-tightened state, pushing the support roller 22 upward and making it fit against the outer wall of the rotary kiln shell 3. When the rotary kiln shell 3 is running, slight radial jump may occur due to uneven material distribution or vibration. At this time, the elastic telescopic rod can also automatically adjust to maintain the stable fit between the support roller 22 and the outer wall of the rotary kiln shell 3, avoiding support gaps or excessive compression under rigid support, and achieving stable support for the rotary kiln shell 3.

[0027] In one embodiment of this utility model, such as Figure 3 As shown, the connecting assembly 41 includes two supports 411, a fixed section 412, a connecting rod 413, and an outer plate 414. The two supports 411 are symmetrically arranged on the base 1, the fixed section 412 is mounted on the base 1 through the supports 411, the connecting rod 413 is disposed on the side wall of the fixed section 412, and the outer plate 414 is mounted on the fixed section 412 through the connecting rod 413.

[0028] It should be noted that the outer plate 414 described in this embodiment is detachably connected to the connecting rod 413 by bolts, and multiple outer plates 414 are provided at equal intervals. The outer plate 414 can block external dust and debris, avoid sealing failure due to foreign objects or pollution, and provide a reliable external protective frame for the sealing mechanism 4.

[0029] Specifically, the outer plate 414 is fastened to the connecting rod 413 on the side wall of the fixed section 412 by bolts. Multiple outer plates 414 are arranged at equal intervals along the circumference of the fixed section 412 to form a ring-shaped protective barrier. When the rotary kiln is running, dust, material particles and other debris in the industrial environment will be blocked by the outer plate 414 to avoid the sealing components from jamming and failing.

[0030] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the clamping assembly 43 includes a flexible seal 431 and an airbag 432, wherein the flexible seal 431 is disposed on the fish scale assembly 42, and the airbag 432 is disposed on the fish scale assembly 42 through the flexible seal 431.

[0031] It should be noted that the airbag 432 described in this embodiment is a ring structure made of high-temperature resistant elastic rubber. The airbag 432 surrounds and fits the outside of the flexible seal 431, so that the inflated airbag 432 can exert pressure on the flexible seal 431.

[0032] Specifically, by fitting the flexible seal 431 against the outer wall of the fish scale assembly 42, when the rotary kiln cylinder 3 experiences slight radial runout, the flexible seal 431 can coordinate with the elastic expansion and contraction of the fish scale assembly 42 to maintain a stable fit between the flexible seal 431 and the outer wall of the rotary kiln cylinder 3, thereby achieving stable sealing performance.

[0033] In one embodiment of this utility model, such as Figure 4 As shown, the airbag 432 is connected to an inlet pipe 4321 and an outlet pipe 4322.

[0034] It should be noted that the airbags 432 described in this embodiment are provided in three parts, and the ends of the three airbags 432 away from the flexible seal 431 are attached to the connecting rod 413. Specifically, before the sealing device is in operation, the airbag 432 is in a naturally contracted state, and is wrapped around the outside of the flexible seal 431 by a ring structure. During operation, cold water is continuously supplied to the airbag 432 through the water inlet pipe 4321. At this time, the airbag 432 will expand, thereby squeezing the flexible seal 431. The flexible seal 431 will deform under pressure, thereby pushing the fish scale assembly 42 as a whole to move slightly towards the rotary kiln shell 3, so that the graphite sealing block at the end of the fish scale assembly 42 fits more tightly with the outer wall of the shell, enhancing the sealing effect. At the same time, the cold water in the airbag 432 circulates out through the water outlet pipe 4322, absorbing the heat of the sealing area and avoiding material aging, elasticity decay or deformation failure caused by high temperature. Moreover, the degree of expansion of the airbag 432 can be controlled by adjusting the water flow rate and volume of the water inlet pipe 4321, thereby adjusting the pressure on the flexible seal 431 to adapt to the sealing requirements of the rotary kiln shell 3 under different operating conditions, and achieve stable sealing with controllable pressure.

[0035] In summary, the rotary kiln sealing device of this utility model effectively reduces air and material leakage and enhances sealing performance by wrapping a flexible sealing element around the fish scale assembly. Furthermore, an air bladder is wrapped around the outside of the flexible sealing element, and cold water is supplied to the air bladder through the water inlet pipe. This causes the air bladder to expand and compress the flexible sealing element, pushing it to fit more tightly against the outer wall of the fish scale assembly, avoiding damage to the flexible sealing element caused by rigid compression. Additionally, as the cold water circulates within the air bladder, it simultaneously absorbs the heat generated in the sealing area, effectively reducing the operating temperature of the fish scale assembly and the flexible sealing element. This prevents material aging, elasticity loss, or deformation failure caused by high temperatures, extending the service life.

[0036] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rotary kiln sealing device, characterized in that, include: The base, support mechanism, rotary kiln body, and sealing mechanism, among which, The support mechanism is mounted on the base; The rotary kiln shell is mounted on the base via the support mechanism; The sealing mechanism includes a connecting assembly, a fish-scale plate assembly, and a clamping assembly, wherein, The connecting component is disposed on the base; The fish scale group is disposed within the connecting component; The clamping component is disposed within the connecting component via the fish scale assembly.

2. The rotary kiln sealing device according to claim 1, characterized in that, The support mechanism includes a base plate and two support rollers, wherein, The base plate is mounted on the base; The two support rollers are symmetrically arranged on the base, and the support rollers are in contact with the outer wall of the rotary kiln cylinder.

3. The rotary kiln sealing device according to claim 1, characterized in that, The connecting assembly includes two supports, a fixed section, a connecting rod, and an outer plate, wherein, The two supports are symmetrically arranged on the base; The fixed section is mounted on the base via the support; The connecting rod is disposed on the side wall of the fixed section; The outer plate is mounted on the fixed section via the connecting rod.

4. The rotary kiln sealing device according to claim 1, characterized in that, The clamping assembly includes a flexible seal and an airbag, wherein... The flexible seal is disposed on the fish scale assembly; The airbag is disposed on the fish scale assembly via the flexible sealing element.

5. The rotary kiln sealing device according to claim 4, characterized in that, The airbag is connected to an inlet pipe and an outlet pipe.

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