Manhole door sealing structure of cement clinker line rotary kiln
The sealing structure of built-in manhole cover, positive pressure furnace door cover, external cover plate and manhole reinforcement plate is adopted on the cement clinker line rotary kiln manhole door, and high-temperature packing and shape memory alloy bars are used at the connection. , solves the problem of insufficient sealing performance, achieves a more efficient sealing effect, and reduces production costs and environmental pollution risks.
Patent Information
- Application Number
- CN202421273674.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The sealing structure of the cement clinker line rotary kiln has the problem of insufficient sealing performance, which leads to material leakage, increases production costs and threatens the safety of operators.
Adopt a sealing structure including a rotary kiln barrel and a manhole door body, with built-in manhole cover and positive pressure furnace door cover. The external cover plate and manhole reinforcement plate are connected through sealing grooves and high-temperature packs, and high-temperature is set at the connection. Shape memory alloy bars to improve sealing performance.
It significantly improves the sealing performance of manhole doors, effectively solves the problem of material leakage, improves the continuity and efficiency of the production line, and reduces the risk of environmental pollution and the safety risks of operators.
Smart Images
Figure CN222460264U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement clinker line rotary kiln equipment, in particular to a cement clinker line rotary kiln manhole door sealing structure. Background Art
[0002] The rotary kiln of the clinker calcining equipment of the mud clinker line mainly undertakes the functions of fuel combustion, raw material calcination, heat exchange, chemical reaction and transportation. The rotary kiln for cement industry is a large-scale key production equipment of cement production enterprises. Its performance and operation status largely determine the economic benefits of the enterprise; the cement rotary kiln is mainly composed of the cylinder part, the supporting device, the transmission device, the kiln head and the kiln tail sealing device and other components.
[0003] In the production process of cement clinker rotary kiln, manhole door is the key channel to ensure the normal operation of equipment and to conduct regular inspection and maintenance. However, the current design of manhole door in the industry generally has the problem of insufficient sealing performance. Due to the lack of effective sealing structure, most manhole doors can only rely on castables to achieve sealing. Although this sealing method can prevent material leakage to a certain extent, its sealing effect is often difficult to guarantee under harsh conditions such as high temperature, high pressure and long-term wear.
[0004] During operation, due to the influence of high temperature environment, castables are prone to deformation and cracking, resulting in reduced sealing performance. In addition, the vibration and friction generated during the operation of the rotary kiln will also accelerate the wear of the sealing material, further exacerbating the leakage phenomenon. Leakage will not only cause waste of raw materials and increase production costs, but may also pollute the production environment and even threaten the safety of operators.
[0005] Therefore, it is particularly important to improve and optimize the sealing structure of the manhole door of the rotary kiln in the cement clinker line. Utility Model Content
[0006] The utility model aims to provide a sealing structure for a manhole door of a rotary kiln in a cement clinker line, so as to solve the problems raised in the above-mentioned background technology.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A sealing structure for a manhole door of a rotary kiln in a cement clinker line comprises a rotary kiln cylinder and a manhole door body, wherein the rotary kiln cylinder is provided with a kiln cylinder opening connected to the manhole door body, the manhole door body comprises a built-in manhole cover and a positive-pressure furnace door cover, the built-in manhole cover is located inside the positive-pressure furnace door cover, the positive-pressure furnace door cover can be opened and installed on the rotary kiln cylinder, the built-in manhole cover comprises a built-in cover plate and an external cover plate, the built-in cover plate is located inside the external cover plate, the built-in cover plate and the external cover plate are connected by a sealing reinforcement rib, a sealing groove is provided on the outer circumferential wall of the built-in cover plate located on the inner wall of the external cover plate, the sealing groove is arranged in a U-shaped structure, and the sealing groove is filled with high-temperature packing.
[0009] As a preferred solution of the utility model, a manhole reinforcement plate is provided on the outer circumferential wall of the kiln cylinder opening of the rotary kiln cylinder.
[0010] As a preferred solution of the utility model, the built-in cover plate is located in the kiln tube opening, the outer circumferential wall of the built-in cover plate abuts against the inner circumferential wall of the kiln tube opening, and the inner wall of the external cover plate abuts against the manhole reinforcement plate on the outer wall of the rotary kiln tube.
[0011] As a preferred solution of the utility model, a high-temperature shape memory alloy strip is provided at the connection between the inner wall of the manhole reinforcement plate and the external cover plate, and the high-temperature shape memory alloy strip is connected to the inner wall of the external cover plate.
[0012] As a preferred solution of the utility model, the high-temperature packing inside the sealing groove abuts against the outer wall of the manhole reinforcement plate.
[0013] As a preferred solution of the utility model, the high-temperature packing matches the length and width of the sealing groove and fits precisely, and the sealing groove is a U-shaped groove of 16mm*19mm.
[0014] As a preferred solution of the utility model, the high-temperature packing has a size of 19*19 mm and is resistant to a high temperature of 550°C.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] In view of the problems raised in the background technology, the present application has a simple structure and good sealing effect. The sealing structure improves the sealing performance of the manhole door, which can not only effectively solve the leakage problem and improve the continuity and efficiency of the production line, but also reduce the risk of environmental pollution and ensure the safety and health of operators. It is of great significance to improve the overall performance of the rotary kiln of the cement clinker line, reduce production costs and achieve green and sustainable development.
[0017] By opening a U-shaped sealing groove on the inner wall of the external cover plate and filling it with high-temperature resistant packing, the high-temperature resistant packing material should have good high-temperature resistance, elasticity and wear resistance, which can effectively solve the problems existing in the existing sealing structure;
[0018] A high-temperature shape memory alloy strip is arranged at the connection between the inner wall of the external cover plate and the manhole reinforcement plate to improve the sealing performance. The high-temperature shape memory alloy strip has a unique shape memory effect and can return to a predetermined initial shape when heated, but its melting point or boiling point is much higher than the actual working temperature, so it will not melt. The sealing is enhanced by the high-temperature shape memory alloy strip, which has the advantages of high temperature resistance, wear resistance, and good sealing performance. It can significantly improve the continuity and efficiency of the production line, reduce the risk of environmental pollution, and ensure the safety and health of operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the integral manhole door body of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the manhole door body of the utility model;
[0021] Figure 3 This is a cross-sectional view of the manhole door body of the utility model;
[0022] Figure 4 The figure is a schematic diagram of the position of the high-temperature shape memory alloy strip at the connection between the manhole reinforcement plate and the external cover plate of the utility model.
[0023] In the figure: 1. rotary kiln cylinder; 2. manhole door body; 11. kiln cylinder opening; 111. manhole reinforcement plate; 112. high-temperature shape memory alloy strip; 21. built-in manhole cover; 211. built-in cover plate; 212. external cover plate; 2121. sealing groove; 2122. high-temperature packing; 22. positive pressure furnace door cover. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.
[0025] Example
[0026] See also Figure 1-4The utility model provides a technical solution: a cement clinker line rotary kiln manhole door sealing structure, comprising a rotary kiln cylinder 1 and a manhole door body 2, the rotary kiln cylinder 1 is provided with a kiln cylinder opening 11 connected to the manhole door body 2, the manhole door body 2 comprises a built-in manhole cover 21 and a positive pressure furnace door cover 22, the built-in manhole cover 21 is located inside the positive pressure furnace door cover 22, the positive pressure furnace door cover 22 can be opened and installed on the rotary kiln cylinder 1, the built-in manhole cover 21 comprises a built-in cover plate 211 and an external cover plate 212, the built-in cover plate 211 is located inside the external cover plate 212 The built-in cover plate 211 is connected to the external cover plate 212 by a sealing reinforcement rib, and a sealing groove 2121 is provided on the outer circumferential wall of the built-in cover plate 211 on the inner wall of the external cover plate 212. The sealing groove 2121 is arranged in a U-shaped structure, and the inside of the sealing groove 2121 is filled with a high-temperature packing 2122; the high-temperature packing 2122 matches the length and width of the sealing groove 2121 and fits precisely, and the sealing groove 2121 is a U-shaped groove of 16mm*19mm; the high-temperature packing 2122 has a size of 19*19mm and can withstand a high temperature of 550°C.
[0027] It should be noted that a high-temperature packing 2122 is filled in the sealing groove 2121. During the filling process, it should be ensured that the packing fits tightly in the sealing groove 2121 without leaving any gaps. At the same time, it is also necessary to ensure that the length and width of the packing match the U-shaped groove to ensure the sealing effect. The high-temperature resistant packing 2122 is made of a material with stable performance at high temperatures, can withstand the high temperature environment in the rotary kiln, and has good sealing performance, effectively preventing the occurrence of leakage.
[0028] Furthermore, the size of the high temperature packing 2122 is 19*19 mm. During the filling process, the packing fits tightly in the sealing groove 2121 without leaving any gaps. The height of the high temperature packing 2122 is higher than the sealing groove 2121 to ensure the sealing performance and the sealing performance of the connection to prevent leakage.
[0029] See also Figure 2 , 3 and 4, a manhole reinforcement plate 111 is arranged on the outer circumferential wall of the kiln shell opening 11 of the rotary kiln shell 1; the internal cover plate 211 is located in the kiln shell opening 11, the outer circumferential wall of the internal cover plate 211 abuts against the inner circumferential wall of the kiln shell opening 11, and the inner wall of the external cover plate 212 abuts against the manhole reinforcement plate 111 on the outer wall of the rotary kiln shell 1; a high-temperature shape memory alloy strip 112 is arranged at the connection between the inner wall of the manhole reinforcement plate 111 and the external cover plate 212, and the high-temperature shape memory alloy strip 112 is connected to the inner wall of the external cover plate 212; the high-temperature packing 2122 inside the sealing groove 2121 abuts against the outer wall of the manhole reinforcement plate 111.
[0030] It should be noted that the manhole reinforcement plate 111 is fitted with the outer circumferential wall of the kiln barrel opening 11, the outer circumferential wall of the built-in cover plate 211 is abutted against the inner circumferential wall of the kiln barrel opening 11, the inner circumferential wall of the kiln barrel opening 11 is sealed by the built-in cover plate 211, and then an external cover plate 212 is arranged outside the built-in cover plate 211, the external cover plate 212 is abutted against the manhole reinforcement plate 111 on the outer circumferential wall of the kiln barrel opening 11, and the sealing groove 2121 on the inner wall of the external cover plate 212 is filled with a high-temperature packing 2122. The high-temperature packing 2122 can effectively solve the problems existing in the existing sealing structure. The sealing groove 2121 structure with the high-temperature packing 2122 has the advantages of high temperature resistance, wear resistance, good sealing performance, etc., which can significantly improve the continuity and efficiency of the production line, reduce the risk of environmental pollution, and ensure the safety and health of operators.
[0031] Furthermore, by arranging a high-temperature shape memory alloy strip 112 at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected, the high-temperature shape memory alloy strip 112 is deformed by heat and filled at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected, thereby enhancing the sealing performance. When the original shape needs to be restored, it can be shrunk and returned to the initial state by cooling;
[0032] Furthermore, the high-temperature shape memory alloy strip 112 has a unique shape memory effect and can return to a predetermined initial shape when heated, but its melting point or boiling point is much higher than the actual working temperature, so it will not melt. The high-temperature shape memory alloy strip 112 enhances the sealing performance and has the advantages of high temperature resistance, wear resistance, and good sealing performance. It can significantly improve the continuity and efficiency of the production line, reduce the risk of environmental pollution, and ensure the safety and health of operators.
[0033] Example
[0034] When sealing and closing is required, the positive pressure furnace door cover 22 can be opened and installed on the rotary kiln cylinder 1, and the positive pressure furnace door cover 22 is rotated to close the manhole door body 2, and the manhole reinforcement plate 111 fits with the outer circumferential wall of the kiln cylinder opening 11, and the outer circumferential wall of the built-in cover plate 211 abuts against the inner circumferential wall of the kiln cylinder opening 11, and the inner circumferential wall of the kiln cylinder opening 11 is sealed by the built-in cover plate 211, and then an external cover plate 212 is arranged outside the built-in cover plate 211, and the external cover plate 212 abuts against the manhole reinforcement plate 111 on the outer circumferential wall of the kiln cylinder opening 11, and the sealing groove 212 on the inner wall of the external cover plate 212 1 is filled with a high-temperature packing 2122, which can effectively solve the problems existing in the existing sealing structure. A high-temperature shape memory alloy strip 112 is arranged at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected. The high-temperature shape memory alloy strip 112 is deformed by heat and filled at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected to enhance the sealing performance. When it is necessary to restore the original shape, it can be cooled to shrink and return to the initial state, and the positive pressure furnace door cover 22 is locked to complete the sealing; the present application has a simple structure and a good sealing effect. The effect is good. The sealing structure improves the sealing performance of the manhole door, which can not only effectively solve the leakage problem and improve the continuity and efficiency of the production line, but also reduce the risk of environmental pollution and ensure the safety and health of operators. It is of great significance to improve the overall performance of the rotary kiln of the cement clinker line, reduce production costs and achieve green and sustainable development. By opening a U-shaped sealing groove 2121 on the inner wall of the external cover plate 212 and filling the high-temperature resistant packing 2122 inside, the high-temperature resistant packing material should have good high-temperature resistance, elasticity and wear resistance, which can effectively solve the problems existing in the existing sealing structure. A high-temperature shape memory alloy strip 112 is arranged at the connection between the inner wall of the external cover plate 212 and the manhole reinforcement plate 111 to improve the sealing performance. The high-temperature shape memory alloy strip 112 has a unique shape memory effect and can be restored to a predetermined initial shape when heated, but its melting point or boiling point is much higher than the actual working temperature, so it will not melt. The sealing is enhanced by the high-temperature shape memory alloy strip 112, which has the advantages of high temperature resistance, wear resistance and good sealing performance, which can significantly improve the continuity and efficiency of the production line, reduce the risk of environmental pollution and ensure the safety and health of operators.
[0035] The utility model workflow:
[0036] When in use, the positive pressure furnace door cover 22 can be opened and installed on the rotary kiln cylinder 1, and the positive pressure furnace door cover 22 is rotated to close the manhole door body 2, and the manhole reinforcement plate 111 is fitted with the outer circumferential wall of the kiln cylinder opening 11, and the outer circumferential wall of the built-in cover plate 211 is abutted against the inner circumferential wall of the kiln cylinder opening 11, and the inner circumferential wall of the kiln cylinder opening 11 is sealed by the built-in cover plate 211, and then an external cover plate 212 is arranged outside the built-in cover plate 211, and the external cover plate 212 is abutted against the manhole reinforcement plate 111 on the outer circumferential wall of the kiln cylinder opening 11, and the sealing on the inner wall of the external cover plate 212 is sealed. The interior of the groove 2121 is filled with a high-temperature packing 2122, which can effectively solve the problems existing in the existing sealing structure. A high-temperature shape memory alloy strip 112 is set at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected. The high-temperature shape memory alloy strip 112 is deformed by heat and filled at the corner where the inner wall of the built-in cover plate 211 and the manhole reinforcement plate 111 are connected to enhance the sealing performance. When it is necessary to restore the original shape, it can be cooled to shrink and return to the initial state, and the positive pressure furnace door cover 22 is locked to complete the sealing.
[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sealing structure for a manhole door of a rotary kiln in a cement clinker production line, comprising a rotary kiln cylinder (1) and a manhole door body (2), characterized in that: The rotary kiln cylinder (1) is provided with a kiln cylinder opening (11) connected to the manhole door body (2); the manhole door body (2) comprises a built-in manhole cover (21) and a positive pressure furnace door cover (22); the built-in manhole cover (21) is located inside the positive pressure furnace door cover (22); the positive pressure furnace door cover (22) can be opened and installed on the rotary kiln cylinder (1); the built-in manhole cover (21) comprises a built-in cover plate (211) and an external cover plate (212); The built-in cover plate (211) is located inside the external cover plate (212); the built-in cover plate (211) and the external cover plate (212) are connected via a sealing reinforcement rib; a sealing groove (2121) is provided on the outer circumferential wall of the built-in cover plate (211) located on the inner wall of the external cover plate (212); the sealing groove (2121) is arranged in a U-shaped structure; and a high-temperature packing (2122) is filled inside the sealing groove (2121).
2. A cement clinker line rotary kiln manhole door sealing structure according to claim 1, characterized in that: A manhole reinforcement plate (111) is provided on the outer circumferential wall of the kiln shell opening (11) of the rotary kiln shell (1).
3. A cement clinker line rotary kiln manhole door sealing structure according to claim 2, characterized in that: The built-in cover plate (211) is located in the kiln shell opening (11), the outer circumferential wall of the built-in cover plate (211) abuts against the inner circumferential wall of the kiln shell opening (11), and the inner wall of the external cover plate (212) abuts against the manhole reinforcement plate (111) on the outer wall of the rotary kiln shell (1).
4. A cement clinker line rotary kiln manhole door sealing structure according to claim 3, characterized in that: A high-temperature shape memory alloy strip (112) is provided at the connection between the inner wall of the manhole reinforcement plate (111) and the external cover plate (212), and the high-temperature shape memory alloy strip (112) is connected to the inner wall of the external cover plate (212).
5. The sealing structure of the manhole door of the rotary kiln of a cement clinker production line according to claim 4 is characterized in that: The high-temperature packing (2122) inside the sealing groove (2121) abuts against the outer wall of the manhole reinforcement plate (111).
6. The sealing structure of a cement clinker production line rotary kiln manhole door according to claim 1, characterized in that: The high-temperature packing (2122) matches the sealing groove (2121) in length and width and fits precisely therewith. The sealing groove (2121) is a U-shaped groove of 16 mm*19 mm.
7. The sealing structure for manhole door of rotary kiln in cement clinker production line according to claim 1, characterized in that: The high temperature packing (2122) has a size of 19*19 mm and is resistant to high temperatures of 550°C.