Rotary kiln heat retaining structure

Abstract

The utility model is suitable for rotary kiln equipment technical field provides a kind of rotary kiln heat preservation structure, comprising: refractory bottom plate;Preform and be arranged in the bottom groove of the refractory bottom plate surface one side;Refractory lining is installed in the inner wall of the bottom groove;Middle lining insulation layer is installed in the inner wall of the bottom groove, the top surface of the middle lining insulation layer is connected with outer insulation layer, the surface one side of the outer insulation layer is connected with feed inlet, the one side of the feed inlet is equipped with closure plate;The first refractory brick layer between the refractory lining and middle lining insulation layer is built, the top surface of the first refractory brick layer is equipped with flue pipe;The second refractory brick layer between the middle lining insulation layer and outer insulation layer is built.The rotary kiln heat preservation structure provided in the scheme effectively blocks heat conduction path by multilayer masonry, U type intercommunication, cement sealing and other ways, improves overall air tightness and structural stability, realizes the dual promotion of thermal efficiency and equipment safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary kiln equipment, and in particular relates to a rotary kiln insulation structure. Background Technology

[0002] Rotary kiln insulation structure is a multi-layer composite insulation system applied in rotary kiln equipment. It is mainly used to reduce heat loss, improve thermal energy utilization efficiency, and prevent direct damage to the kiln body from high temperatures. The structure is usually composed of a refractory inner lining, an insulation layer, and an outer shell structure. It is rationally laid out according to thermal performance and is suitable for high-temperature continuous operation scenarios such as cement and metallurgy, ensuring stable and efficient operation of the equipment.

[0003] However, the existing rotary kiln insulation structure is complex with many layers, requires advanced construction techniques, has a long on-site installation period, and requires precise alignment and masonry, which increases the difficulty of construction and affects the insulation effect. Utility Model Content

[0004] This utility model provides a rotary kiln insulation structure, which aims to solve the problem of the existing rotary kiln insulation structure, which has a complex structure with many layers, high construction process requirements, long on-site installation period, and requires precise alignment and masonry, which increases the construction difficulty and affects the insulation effect.

[0005] This utility model is implemented as follows: a rotary kiln insulation structure includes: a refractory base plate; a bottom groove formed on one side of the surface of the refractory base plate; a refractory inner lining installed on the inner wall of the bottom groove; a middle lining insulation layer installed on the inner wall of the bottom groove, the top surface of the middle lining insulation layer being connected to an outer insulation layer, one side of the surface of the outer insulation layer being connected to a feed inlet, and a closing plate installed on one side of the feed inlet; a first refractory brick layer built between the refractory inner lining layer and the middle lining insulation layer, the top surface of the first refractory brick layer being equipped with a smoke outlet pipe; and a second refractory brick layer built between the middle lining insulation layer and the outer insulation layer.

[0006] Preferably, the refractory inner lining and the intermediate insulation layer are connected on the inner side of the bottom trench, and the bottom side of the first refractory brick layer is tightly built between the refractory inner lining and the intermediate insulation layer in the bottom trench.

[0007] Preferably, the inner diameter of the smoke outlet pipe matches the inner diameter of the top surface of the refractory lining, and the top surface of the refractory lining is cemented along the edge of the smoke outlet pipe.

[0008] Preferably, the connection between the inner insulation layer and the outer insulation layer is cemented to the outer surface of the flue pipe and fits tightly.

[0009] Preferably, the closing plate and the mating side of the feed inlet form a sliding structure, and the feed inlet forms a closed structure with the above-mentioned components through the closing plate.

[0010] Preferably, the bottom side of the second refractory brick layer is built on the refractory base plate, and the bottom edge of the outer insulation layer is located below the second refractory brick layer.

[0011] Preferably, the refractory inner lining, the middle insulation layer, and the outer insulation layer are connected in a U-shape, and each is made of a different material.

[0012] Preferably, one side of the feed inlet extends through the refractory inner lining, the middle insulation layer, the first refractory brick layer, the outer insulation layer, and the second refractory brick layer.

[0013] Compared with related technologies, the rotary kiln insulation structure provided by this utility model has the following beneficial effects:

[0014] As a rotary kiln insulation structure, this device adopts a multi-layer composite design, including a refractory inner lining, a middle insulation layer, an outer insulation layer, and a double-layer refractory brick structure, forming a closed system with high-efficiency heat insulation and high-temperature resistance. It has excellent thermal stability and thermal efficiency. At the same time, the U-shaped interconnected structure enhances the fit and overall strength between the layers, adapting to the stringent requirements of continuous high-temperature operation. Attached Figure Description

[0015] Figure 1 This is a side view of the appearance structure of this utility model;

[0016] Figure 2 This is a cross-sectional side view of the various parts of this utility model;

[0017] Figure 3 This is an exploded side view of the various parts of this utility model.

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0020] Reference numerals in the attached drawings: 1. Refractory base plate; 2. Bottom groove; 3. Refractory inner lining layer; 4. Middle lining insulation layer; 5. First refractory brick layer; 6. Outer insulation layer; 7. Smoke outlet pipe; 8. Second refractory brick layer; 9. Feed inlet; 10. Closing plate. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This utility model embodiment provides a rotary kiln insulation structure, such as Figure 1-5 As shown, the rotary kiln insulation structure includes: a refractory base plate 1; a bottom groove 2 pre-formed and opened on one side of the surface of the refractory base plate 1; a refractory inner lining layer 3 installed on the inner wall of the bottom groove 2; a middle lining insulation layer 4 installed on the inner wall of the bottom groove 2, the top surface of the middle lining insulation layer 4 being connected to an outer insulation layer 6, one side of the surface of the outer insulation layer 6 being connected to a feed inlet 9, and a closing plate 10 installed on one side of the feed inlet 9; a first refractory brick layer 5 built between the refractory inner lining layer 3 and the middle lining insulation layer 4, the top surface of the first refractory brick layer 5 being equipped with a smoke outlet pipe 7; and a second refractory brick layer 8 built between the middle lining insulation layer 4 and the outer insulation layer 6.

[0024] In this embodiment, the refractory base plate 1 is the basic load-bearing layer. The overall structure is positioned and pre-embedded through the bottom groove 2. The refractory inner lining layer 3 is laid on the inner wall of the bottom groove 2 to resist high-temperature kiln gas and heat radiation, serving as the first refractory barrier. Its outer side is the middle lining insulation layer 4, which acts as a buffer and heat insulation layer, communicating with the top outer insulation layer 6 to further reduce heat conduction outwards. A first refractory brick layer 5 is constructed between the refractory inner lining layer 3 and the middle lining insulation layer 4 to enhance structural strength and improve the fire resistance rating. A flue 7 is installed on its top surface to discharge combustion exhaust gases. The outer insulation layer 6 is tightly fitted with the top surface of the refractory inner lining layer 3 and the middle lining insulation layer 4 to prevent heat and flue gas from escaping. A second refractory brick layer 8 is built between the middle lining insulation layer 4 and the outer insulation layer 6 to enhance the stability and heat resistance of the outer insulation shell. The bottom of the second refractory brick layer 8 is directly built on the refractory base plate 1 to form a complete and closed pressure-bearing structure. Finally, the outer insulation layer 6 is provided with a feed port 9 on the outside to facilitate the feeding of fuel or raw materials. A closing plate 10 is provided on one side and slides into the feed port 9 to form a controllable opening and closing sealed structure to prevent heat loss or foreign object intrusion.

[0025] In a further preferred embodiment of the present invention, the refractory inner lining layer 3 and the intermediate lining insulation layer 4 are connected on the inner side of the bottom groove 2, and the bottom side of the first refractory brick layer 5 is tightly built between the refractory inner lining layer 3 and the intermediate lining insulation layer 4 in the bottom groove 2.

[0026] In this embodiment, the refractory inner lining 3 and the middle lining insulation layer 4 are closely fitted in the bottom groove 2. The refractory inner lining 3 and the middle lining insulation layer 4 are structurally connected to form a heat buffer and conduction control channel. The bottom of the first refractory brick layer 5 is tightly embedded between the two, which plays the role of reinforcing the internal structure, blocking high-temperature heat flow, and improving the overall high temperature resistance and thermal expansion and contraction stability.

[0027] In a further preferred embodiment of this utility model, the inner diameter of the smoke outlet pipe 7 matches the inner diameter of the top surface of the refractory lining layer 3, and the top surface of the refractory lining layer 3 is cemented along the edge of the smoke outlet pipe 7.

[0028] In this embodiment, the flue pipe 7 matches the top surface of the refractory lining 3 and is tightly sealed with cement masonry to ensure that high-temperature flue gas can be discharged smoothly without leaking into the gaps of the insulation structure. This sealed structure helps to stabilize the airflow direction, prevent high-temperature hot gas from eroding the insulation material, and enhance the overall sealing and safety of the system.

[0029] In a further preferred embodiment of this utility model, the connection between the intermediate insulation layer 4 and the outer insulation layer 6 is cemented and tightly fitted to the outer surface of the smoke outlet pipe 7.

[0030] In this embodiment, the connection between the middle insulation layer 4 and the outer insulation layer 6 is sealed with cement and tightly bonded to the outer surface of the flue pipe 7, forming a continuous and seamless heat sealing path to prevent flue gas or heat energy from penetrating into the outer shell, thereby improving insulation efficiency and maintaining thermal expansion coordination between the flue pipe 7 and the overall insulation system.

[0031] In a further preferred embodiment of the present invention, the mating side of the closing plate 10 and the feed port 9 forms a sliding structure with each other, and the feed port 9 forms a closed structure with the above-mentioned components through the closing plate 10.

[0032] In this embodiment, the feed inlet 9 and the closing plate 10 are sealed and opened and closed through a sliding structure, which ensures that the feeding operation is convenient and fast, and at the same time effectively prevents heat loss or foreign objects from entering when not feeding.

[0033] In a further preferred embodiment of the present invention, the bottom side of the second refractory brick layer 8 is built on the refractory base plate 1, and the bottom edge of the outer insulation layer 6 is located below the second refractory brick layer 8.

[0034] In this embodiment, the second refractory brick layer 8 is directly built on the refractory base plate 1 to form the bottom heat-resistant structure, which supports the bottom edge of the outer insulation layer 6. This design enhances the overall load-bearing capacity and heat protection of the lower part, prevents heat from the bottom from being conducted to the refractory base plate 1, and extends the service life.

[0035] In a further preferred embodiment of this utility model, the refractory inner lining 3, the middle insulation layer 4, and the outer insulation layer 6 are connected in a U-shape, and their materials are different.

[0036] In this embodiment, the refractory inner lining layer 3, the middle insulation layer 4, and the outer insulation layer 6 are connected in a U-shape and constructed with different materials. This effectively utilizes the temperature resistance and thermal insulation performance of each layer. The U-shaped structure can alleviate thermal stress concentration, enhance the structural stability between layers, improve overall thermal efficiency, and prevent disordered heat diffusion.

[0037] In a further preferred embodiment of the present invention, one side of the surface of the feed inlet 9 extends through the refractory inner lining layer 3, the middle insulation layer 4, the first refractory brick layer 5, the outer insulation layer 6, and the second refractory brick layer 8.

[0038] In this embodiment, the feed inlet 9 penetrates the refractory inner lining 3, the middle insulation layer 4, the first refractory brick layer 5, the outer insulation layer 6, and the second refractory brick layer 8, forming a complete channel. This design ensures that materials can be efficiently fed into the high-temperature zone, and the multi-layer through structure enhances the thermal protection function of the feed inlet 9, preventing heat leakage from the high-temperature zone through the channel and ensuring stable system operation.

[0039] In summary, the rotary kiln insulation structure is based on the refractory base plate 1, and is successively equipped with a refractory inner lining layer 3, a middle insulation layer 4, an outer insulation layer 6, and a multi-layer refractory brick structure, realizing a U-shaped connection and layered heat insulation design. Combined with the sealing cooperation between the flue pipe 7 and the feed inlet 9, it effectively improves the overall insulation effect, heat energy utilization rate and structural stability, ensuring the efficient, sealed and safe operation of the rotary kiln.

[0040] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0041] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A rotary kiln insulation structure, characterized in that, include: Refractory base plate (1); A bottom groove (2) is formed on one side of the surface of the fire-resistant base plate (1); Refractory lining (3) installed on the inner wall of the bottom groove (2); A middle lining insulation layer (4) is installed on the inner wall of the bottom groove (2). The top surface of the middle lining insulation layer (4) is connected to an outer insulation layer (6). One side of the surface of the outer insulation layer (6) is connected to a feed inlet (9). A closing plate (10) is installed on one side of the feed inlet (9). A first refractory brick layer (5) is built between the refractory inner lining layer (3) and the middle lining insulation layer (4), and a smoke outlet pipe (7) is installed on the top surface of the first refractory brick layer (5). The second refractory brick layer (8) is built between the middle insulation layer (4) and the outer insulation layer (6).

2. The rotary kiln insulation structure of claim 1, wherein The refractory inner lining (3) and the middle lining insulation layer (4) are connected on the inner side of the bottom groove (2), and the bottom side of the first refractory brick layer (5) is tightly built between the refractory inner lining (3) and the middle lining insulation layer (4) in the bottom groove (2).

3. The rotary kiln insulation structure of claim 1, wherein The inner diameter of the smoke outlet pipe (7) matches the inner diameter of the top surface of the refractory lining layer (3), and the top surface of the refractory lining layer (3) is cemented along the edge of the smoke outlet pipe (7).

4. The rotary kiln insulating structure as claimed in claim 1, wherein The connection between the middle insulation layer (4) and the outer insulation layer (6) is cemented and tightly fitted to the outer surface of the smoke outlet pipe (7).

5. The rotary kiln insulation structure as claimed in claim 1, wherein, The closing plate (10) and the fitting side of the feed inlet (9) form a sliding structure with each other, and the feed inlet (9) forms a closed structure with the above-mentioned components through the closing plate (10).

6. The rotary kiln insulation structure as claimed in claim 1, wherein, The bottom side of the second refractory brick layer (8) is built on the refractory base plate (1), and the bottom edge of the outer insulation layer (6) is set below the second refractory brick layer (8).

7. The rotary kiln insulation structure as claimed in claim 1, wherein, The refractory inner lining (3), the middle insulation layer (4) and the outer insulation layer (6) are connected in a U-shape and are made of different materials.

8. The rotary kiln insulation structure of claim 1, wherein The surface of the feed inlet (9) extends through the refractory inner lining (3), the middle insulation layer (4), the first refractory brick layer (5), the outer insulation layer (6), and the second refractory brick layer (8).

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