Iron runner cover plate

Abstract

The utility model discloses an iron runner cover plate, and belongs to the technical field of metallurgy. The iron runner cover plate comprises a shell, a heat insulation layer, a castable layer and an anti-radiation layer. The shell is provided with a containing groove. The heat insulation layer, the castable layer and the anti-radiation layer are all arranged in the containing groove, and the heat insulation layer, the castable layer and the anti-radiation layer are sequentially arranged in the direction from the groove bottom to the groove opening of the containing groove; the heat insulation layer is fixedly connected to the inner wall of the containing groove, the castable layer is fixedly connected to the heat insulation layer and / or the inner wall of the containing groove, and the anti-radiation layer is fixedly connected to the castable layer and / or the inner wall of the containing groove. The iron runner cover plate forms triple heat resistance superposition through the anti-radiation layer, the pouring layer and the heat insulation layer, the heat insulation performance of the iron runner cover plate is enhanced, the heat absorption amount of the iron runner cover plate in unit time is effectively reduced, and the surface temperature of an iron runner cover plate shell is reduced, so that environmental heat radiation is reduced, the heat dissipation loss of molten iron is reduced, and the temperature of the molten iron is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of metallurgy, and in particular relates to an iron trench cover. Background Technology

[0002] In China, blast furnaces generally have covers installed above the slag and iron trough. The core functions of these covers are mainly reflected in three aspects: First, they serve as a safety barrier to ensure the safety of on-site operators and the passage of maintenance vehicles; second, the covering structure reduces the heat loss of the high-temperature molten iron (about 1450-1550℃) and slag in the slag and iron trough; and finally, they effectively block the spread of smoke and dust generated during the smelting process, maintaining a clean working environment in front of the furnace.

[0003] The poor thermal insulation performance of the iron trench cover in the relevant technology causes the surface temperature of the shell to often exceed 200°C, which not only increases the ambient heat radiation, but also directly leads to a large temperature drop in molten iron. Utility Model Content

[0004] This application aims to at least partially solve the technical problem of poor thermal insulation performance of iron trench covers in related technologies. To this end, this application provides an iron trench cover.

[0005] This application provides an embodiment of a trench cover, comprising:

[0006] The casing has a receiving groove;

[0007] The container comprises a heat insulation layer, a castable refractory layer, and a radiation shielding layer, all disposed within the receiving tank. These layers are arranged sequentially along the direction from the bottom to the opening of the receiving tank. The heat insulation layer is fixedly connected to the inner wall of the receiving tank, the castable refractory layer is fixedly connected to the heat insulation layer and / or the inner wall of the receiving tank, and the radiation shielding layer is fixedly connected to the castable refractory layer and / or the inner wall of the receiving tank.

[0008] In some embodiments, the heat insulation layer is fixedly connected to the bottom wall of the receiving groove.

[0009] In some embodiments, the castable layer is fixedly connected to the heat insulation layer and the sidewall of the receiving groove.

[0010] In some embodiments, the radiation shielding layer is fixedly connected to the castable layer and the sidewall of the receiving tank.

[0011] In some embodiments, the radiation shielding layer is flush with the opening of the receiving groove.

[0012] In some embodiments, the iron trench cover plate further includes an anchoring hook fixedly connected to the inner wall of the receiving groove, and the heat insulation layer and / or the castable layer are fixedly connected to the anchoring hook.

[0013] In some embodiments, the iron trench cover includes a plurality of the anchoring hooks, some of which are Y-shaped and some of which are V-shaped.

[0014] In some embodiments, the iron trench cover plate further includes a lifting lug fixedly connected to the housing.

[0015] In some embodiments, the housing is cuboid in shape, and four lifting lugs are provided, which are respectively connected to the four corners of the upper end face of the housing.

[0016] In some embodiments, the housing includes a top plate and four side plates, the top plate and the side plates being rectangular, the four side plates being respectively connected to the four sides of the top plate, the top plate and the side plates being perpendicular, and the top plate and the side plates forming the receiving groove.

[0017] This utility model has at least the following beneficial effects:

[0018] The iron trench cover includes a shell, a heat insulation layer, a castable refractory layer, and a radiation shielding layer. The shell has a receiving groove. The heat insulation layer, the castable refractory layer, and the radiation shielding layer are all disposed within the receiving groove, arranged sequentially from the bottom to the opening of the receiving groove. The heat insulation layer is fixedly connected to the inner wall of the receiving groove, the castable refractory layer is fixedly connected to the heat insulation layer and / or the inner wall of the receiving groove, and the radiation shielding layer is fixedly connected to the castable refractory layer and / or the inner wall of the receiving groove.

[0019] The iron trench cover plate forms a triple thermal resistance through a radiation shielding layer, a casting layer, and a heat insulation layer, which enhances the heat insulation performance of the iron trench cover plate. This effectively reduces the heat absorption of the iron trench cover plate per unit time, lowers the surface temperature of the iron trench cover plate shell, thereby reducing environmental heat radiation, reducing heat loss of molten iron, and ensuring the temperature of molten iron. Because the surface temperature of the shell is lowered, the deformation of the shell due to high temperature is reduced, thus extending the service life of the iron trench cover plate and also helping to reduce the frequency of maintenance to a certain extent. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A top view of a trench cover according to one or more embodiments of this application is shown.

[0022] Figure 2 It shows along Figure 1A cross-sectional view along the AA direction.

[0023] Figure 3 A schematic diagram of the housing of the iron trench cover plate in one or more embodiments of this application is shown.

[0024] Figure 4 This illustration shows a schematic diagram of the structure of a trench cover plate covering a trench in one or more embodiments of this application.

[0025] Reference numerals: 100-Iron trench cover, 110-Shell, 111-Top plate, 112-Side plate, 110a-Receiving trough, 120-Insulation layer, 130-Cast refractory layer, 140-Radiation shielding layer, 150-Anchor hook, 160-Lifting lug, 200-Iron trench, 300-Molten iron. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] In related technologies, iron trench covers suffer from poor heat insulation performance. This application provides an iron trench cover that can at least partially solve the problem of poor heat insulation performance in iron trench covers.

[0031] This application is described below with reference to the accompanying drawings and specific embodiments:

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the iron trench cover 100 includes: a shell 110, a heat insulation layer 120, a castable refractory layer 130, and a radiation shielding layer 140. The shell 110 has a receiving groove 110a. The heat insulation layer 120, the castable refractory layer 130, and the radiation shielding layer 140 are all disposed within the receiving groove 110a, and are arranged sequentially along the direction from the bottom to the opening of the receiving groove 110a; the heat insulation layer 120 is fixedly connected to the inner wall of the receiving groove 110a, the castable refractory layer 130 is fixedly connected to the heat insulation layer 120 and / or the inner wall of the receiving groove 110a, and the radiation shielding layer 140 is fixedly connected to the castable refractory layer 130 and / or the inner wall of the receiving groove 110a.

[0033] The castable refractory layer 130 may be connected only to the heat insulation layer 120, only to the inner wall of the receiving tank 110a, or simultaneously to the inner walls of both the heat insulation layer 120 and the receiving tank 110a. The radiation shielding layer 140 may be connected only to the castable refractory layer 130, only to the inner wall of the receiving tank 110a, or simultaneously to both the castable refractory layer 130 and the inner wall of the receiving tank 110a.

[0034] The radiation shielding layer 140 is heat-resistant and can form an infrared isolation barrier, reflecting the heat of the molten iron 300, reducing heat loss from the molten iron 300, thus achieving energy-saving effects, and improving the heat insulation performance of the iron trench cover 100. Its material can be nano-ultrafine powder high-temperature far-infrared coating, superconducting infrared radiation heat dissipation coating, etc.

[0035] The castable layer 130 can withstand high temperatures and has a heat insulation effect, which can improve the heat insulation performance of the iron trench cover 100. Its material can be high-alumina low-cement castable that is resistant to high temperatures, or lightweight heat-insulating high-alumina spray coating, etc.

[0036] The insulation layer 120 can also withstand high temperatures and has a heat insulation effect, which can improve the heat insulation performance of the iron trench cover 100. Its material can be aluminum silicon board, clay board, magnesium silicon board, etc.

[0037] like Figure 4 As shown, when the trough cover 100 is in use, the radiation shielding layer 140 covers the trough 200. From bottom to top, the layers are the radiation shielding layer 140, the casting layer 130, and the heat insulation layer 120. The trough cover 100 reflects the heat of the molten iron 300 through the radiation shielding layer 140, reducing the heat loss of the molten iron 300. Both the casting layer 130 and the heat insulation layer 120 provide heat insulation, further reducing heat loss and lowering the temperature of the shell 110.

[0038] The iron trench cover 100 forms a triple thermal resistance through the radiation shielding layer 140, the casting layer 130, and the heat insulation layer 120, which enhances the heat insulation performance of the iron trench cover 100, effectively reduces the heat absorption of the iron trench cover 100 per unit time, reduces the surface temperature of the shell 110 of the iron trench cover 100, thereby reducing environmental heat radiation, reducing heat loss of molten iron 300, and ensuring the temperature of molten iron 300; since the surface temperature of the shell 110 is reduced, the deformation of the shell 110 affected by high temperature is reduced, thereby extending the service life of the iron trench cover 100, and also helping to reduce the frequency of maintenance to a certain extent.

[0039] In some embodiments, the heat insulation layer 120 is fixedly connected to the bottom wall of the receiving groove 110a.

[0040] In these embodiments, the receiving tank 110a has a bottom wall and side walls, and the receiving tank 110a can be rectangular, frustum-shaped, etc. The heat insulation layer 120 can be bonded to the bottom wall of the receiving tank 110a by means of slurry or the like.

[0041] In some embodiments, the insulation layer 120 is an insulation board, which is bonded to the bottom wall of the receiving tank 110a by high-temperature slurry. The insulation board can be one of aluminum silicon board, magnesium silicon board or clay board.

[0042] In some embodiments, the insulation layer 120 covers various regions of the bottom wall of the receiving groove 110a to insulate the various regions of the bottom wall.

[0043] In some embodiments, the heat insulation layer 120 is also fixedly connected to the side wall of the receiving groove 110a, and the heat insulation layer 120 covers both the bottom wall and the side wall of the receiving groove 110a to insulate the respective areas of the bottom wall and the side wall.

[0044] In some embodiments, the castable layer 130 is fixedly connected to the sidewall of the heat insulation layer 120 and the receiving groove 110a.

[0045] like Figure 2 As shown, the castable layer 130 is simultaneously fixedly connected to the lower surface of the heat insulation layer 120 and the side wall of the receiving groove 110a, ensuring the stability of the castable layer 130.

[0046] In some embodiments, the material of the castable layer 130 is a high-alumina low-cement castable that is resistant to high temperatures, a lightweight heat-insulating high-alumina spray coating, etc. These materials can adhere to the sidewall of the receiving tank 110a and the surface of the heat insulation layer 120, and after drying and curing, the castable layer 130 is formed.

[0047] In some embodiments, the thickness of the castable layer 130 is 80-140 mm.

[0048] In some embodiments, the radiation shielding layer 140 is fixedly connected to the sidewall of the castable layer 130 and the receiving groove 110a.

[0049] The radiation shielding layer 140 is fixedly connected to both the lower surface of the castable layer 130 and the side wall of the receiving groove 110a, ensuring the stability of the radiation shielding layer 140.

[0050] In some embodiments, the radiation shielding layer 140 is made of nano-ultrafine powder high-temperature far-infrared coating, superconducting infrared radiation heat dissipation coating, etc. These materials can adhere to the surface of the casting layer 130 and the sidewall of the receiving groove 110a, and form the radiation shielding layer 140 after drying and curing.

[0051] In some embodiments, the thickness of the radiation shielding layer 140 is 1-2 mm, and the thermal conductivity is ≤0.05 W / (m·K).

[0052] like Figure 3 As shown, in some embodiments, the housing 110 includes a top plate 111 and four side plates 112. The top plate 111 and the side plates 112 are both rectangular. The four side plates 112 are respectively connected to the four sides of the top plate 111. The top plate 111 and the side plates 112 are perpendicular to each other. The top plate 111 and the side plates 112 together form a receiving groove 110a.

[0053] In these embodiments, the housing 110a is cuboid in shape, which can be rectangular or cubic, and the cross-section of the receiving groove 110a is rectangular, which can be either rectangular or square. The top plate 111 and the side plate 112 are fixedly connected, for example, by welding, snap-fitting, bolting, etc.

[0054] In some embodiments, the iron trench cover 100 further includes an anchoring hook 150 fixedly connected to the inner wall of the receiving groove 110a, and the heat insulation layer 120 and / or the castable layer 130 are fixedly connected to the anchoring hook 150.

[0055] After the anchor hook 150 is installed, the heat insulation layer 120 and the castable refractory layer 130 can also be fixed to the anchor hook 150, ensuring the stability of the heat insulation layer 120 and the castable refractory layer 130 and making it difficult for the heat insulation layer 120 and the castable refractory layer 130 to fall off. The anchor hook 150 can be fixed to the side wall of the receiving groove 110a by welding, snap-fitting, or other methods, which is not limited in this application.

[0056] In some embodiments, the anchor hook 150 is fixed to the bottom wall of the receiving groove 110a.

[0057] In some embodiments, the anchor hook 150 is fixed to the inner wall of the top plate 111.

[0058] In some embodiments, the iron trench cover 100 includes a plurality of anchor hooks 150, some of which are Y-shaped and some of which are V-shaped.

[0059] In other words, Y-shaped anchor hooks 150 and V-shaped anchor hooks 150 are simultaneously fixed on the inner wall of the receiving groove 110a to form a composite anchor hook 150, which helps to improve the stability of the heat insulation layer 120 and the castable layer 130.

[0060] In some embodiments, the distance between two adjacent anchor hooks 150 is 100-160 mm.

[0061] In some embodiments, the radiation shielding layer 140 is flush with the opening of the receiving groove 110a. That is, as... Figure 2 As shown, the radiation shielding layer 140 is flush with the lower end face of the housing 110. With this design, as... Figure 4 As shown, the lower end face of the radiation shielding layer 140 and the lower end face of the shell 110 are at the same height and can both fit against the upper end face of the iron trench 200. This can, to a certain extent, prevent heat dissipation within the iron trench 200 through the gaps between the upper end face of the iron trench 200 and the lower end face of the radiation shielding layer 140, as well as the gaps between the upper end face of the iron trench 200 and the lower end face of the shell 110, thereby reducing heat loss from the molten iron 300 and ensuring the temperature of the molten iron 300.

[0062] In some embodiments, the trench cover 100 further includes a lifting lug 160 fixedly connected to the housing 110. With the lifting lug 160 provided, the trench cover 100 can be lifted by a crane or the like, making it convenient for users to move the trench cover 100.

[0063] In some embodiments, the housing 110 is cuboid in shape, and four lugs 160 are provided, which are respectively connected to the four corners of the upper end face of the housing 110.

[0064] The upper surface of the shell 110 is rectangular, and four lifting lugs 160 are respectively set at the four corners of the upper surface. This design allows the shell 110 to be evenly stressed, ensuring the stability of the iron trench cover 100 during hoisting.

[0065] In some embodiments, four lugs 160 are respectively disposed at the four corners of the upper end face of the top plate 111.

[0066] 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 this application. 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0067] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0068] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A type of iron trench cover, characterized in that, include: The housing (110) has a receiving groove (110a); A heat insulation layer (120), a castable refractory layer (130), and a radiation shielding layer (140) are provided in the receiving groove (110a). The heat insulation layer (120), the castable refractory layer (130), and the radiation shielding layer (140) are arranged sequentially along the direction from the bottom to the opening of the receiving groove (110a). The heat insulation layer (120) is fixedly connected to the inner wall of the receiving groove (110a), the castable refractory layer (130) is fixedly connected to the heat insulation layer (120) and / or the inner wall of the receiving groove (110a), and the radiation shielding layer (140) is fixedly connected to the castable refractory layer (130) and / or the inner wall of the receiving groove (110a).

2. The iron trench cover according to claim 1, characterized in that, The heat insulation layer (120) is fixedly connected to the bottom wall of the receiving groove (110a).

3. The iron trench cover according to claim 1, characterized in that, The castable layer (130) is fixedly connected to the side wall of the heat insulation layer (120) and the receiving groove (110a).

4. The iron trench cover according to claim 1, characterized in that, The radiation shielding layer (140) is fixedly connected to the side wall of the castable layer (130) and the receiving groove (110a).

5. The iron trench cover according to any one of claims 1-4, characterized in that, The radiation shielding layer (140) is flush with the opening of the receiving groove (110a).

6. The iron trench cover according to any one of claims 1-4, characterized in that, The iron trench cover (100) also includes an anchor hook (150) fixedly connected to the inner wall of the receiving groove (110a), and the heat insulation layer (120) and / or the castable layer (130) are fixedly connected to the anchor hook (150).

7. The iron trench cover according to claim 6, characterized in that, The iron trench cover (100) includes a plurality of anchor hooks (150), some of which are Y-shaped and some of which are V-shaped.

8. The iron trench cover according to any one of claims 1-4, characterized in that, The iron trench cover (100) also includes a lifting lug (160) fixedly connected to the housing (110).

9. The iron trench cover according to claim 8, characterized in that, The housing (110) is cuboid in shape, and four lifting lugs (160) are provided, which are respectively connected to the four corners of the upper surface of the housing (110).

10. The iron trench cover according to any one of claims 1-4, characterized in that, The housing (110) includes a top plate (111) and four side plates (112). The top plate (111) and the side plates (112) are both rectangular. The four side plates (112) are respectively connected to the four sides of the top plate (111). The top plate (111) and the side plates (112) are perpendicular to each other, and the top plate (111) and the side plates (112) together form the receiving groove (110a).

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