Wear-resistant long-service-life material distribution chute

Abstract

The utility model relates to the field of material distribution chute manufacturing, and particularly discloses a wear-resistant long-life material distribution chute which comprises a shell and a heat-resistant plate located outside the shell, and further comprises a ceramic composite lining plate located on the inner wall of the shell. The material distribution chute has the effect of improving the overall wear resistance of the material distribution chute.

Description

TECHNICAL FIELD

[0001] The application relates to the field of cloth chute manufacturing, in particular to a wear-resistant long-service-life cloth chute. BACKGROUND

[0002] In the production process of a blast furnace, the cloth chute plays a crucial role, which is responsible for uniformly distributing the furnace charge into the blast furnace, ensuring the normal operation and production efficiency of the blast furnace. However, the existing blast furnace cloth chute has certain limitations, of which the most prominent problem lies in the lining plate part.

[0003] The lining plate of the conventional blast furnace cloth chute is mostly made of conventional metal materials, which faces serious wear problems in the long-term use process. Due to the harsh environment in the blast furnace, the impact of high-temperature and high-speed furnace charge and the erosion of corrosive gas, the wear of the lining plate is aggravated, and the service life is shortened. Frequent replacement of the lining plate not only increases the equipment maintenance cost, but also affects the continuous production of the blast furnace, leading to a decrease in production efficiency, and therefore needs to be improved. CONTENT OF THE INVENTION

[0004] In order to improve the above problems, the application provides a wear-resistant long-service-life cloth chute.

[0005] The application provides a wear-resistant long-service-life cloth chute, which adopts the following technical scheme:

[0006] The wear-resistant long-service-life cloth chute comprises an outer shell and a heat-resistant plate located outside the outer shell, and further comprises a ceramic composite lining plate located on the inner wall of the outer shell.

[0007] By adopting the above technical scheme, the ceramic has extremely high melting point and hardness, can maintain stable physical properties in the high-temperature environment of the blast furnace, effectively resist the scouring and friction of high-temperature furnace charge, and greatly prolong the service life of the cloth chute. Compared with ordinary metal lining plates, the wear resistance of the ceramic composite lining plate in the high-temperature wear environment is greatly improved, and the replacement frequency caused by excessive wear of the lining plate is greatly reduced.

[0008] Optionally, the ceramic composite lining plate comprises a bottom composite lining plate located on the inner bottom wall of the outer shell and a lateral composite lining plate located on the inner side wall of the outer shell.

[0009] By adopting the above technical scheme, the scouring and friction of the furnace charge borne by the blast furnace cloth chute are different. The bottom composite lining plate directly bears the vertical impact and sliding friction of the furnace charge, and its wear degree is often more serious; the lateral composite lining plate mainly bears the lateral friction force and impact force in the falling process of the furnace charge. This targeted setting enables the entire ceramic composite lining plate to exert the best wear resistance at different positions, greatly improving the overall wear resistance of the cloth chute.

[0010] Optionally, the bottom composite lining plate comprises a plurality of abutting lining plate units, and a connecting member is arranged between the lining plate units and the shell for connecting the two.

[0011] By adopting the above technical scheme, the arrangement of the plurality of lining plate units makes the installation process more flexible and convenient. Compared with a large whole composite lining plate, the smaller size lining plate unit is easier to carry and install, and can reduce the labor and time cost in the installation process. Meanwhile, when the bottom composite lining plate needs to be replaced due to wear, only the worn part needs to be replaced, and the whole bottom composite lining plate does not need to be replaced, thereby effectively reducing the maintenance cost and helping to prolong the service life of the material chute.

[0012] Optionally, the lining plate unit comprises a plurality of ceramic composite plates, and the ceramic composite plates comprise, from top to bottom, a ceramic layer, a rubber layer and a steel plate layer.

[0013] By adopting the above technical scheme, the ceramic layer has high wear resistance, and its hardness is much higher than that of ordinary metals and most furnace charges, thereby prolonging the replacement cycle of the lining plate and reducing the labor and material cost of frequent replacement of the lining plate; the rubber layer has good buffering property, and can effectively buffer the impact force when the furnace charge falls, thereby reducing the impact damage of the furnace charge to the ceramic layer; and the lowermost steel plate layer provides good support strength, is closely combined with the ceramic layer and the rubber layer, forms a stable composite structure, and enhances the connection strength of the lining plate and the shell.

[0014] Optionally, a channel is formed between two adjacent ceramic composite plates, the length direction of the channel is parallel to the width direction of the shell, a buffering assembly is installed in the channel, the buffering assembly comprises an installation part located in the channel and a buffering part protruding out of the channel, and the installation part and the buffering part are fixedly connected.

[0015] By adopting the above technical scheme, the arrangement of the buffering assembly can play a certain buffering role, reduce the direct impact of the furnace charge on the lining plate, reduce the wear degree of the lining plate, and prolong the service life of the chute.

[0016] Optionally, the longitudinal section of the installation part is dovetail-shaped.

[0017] By adopting the above technical scheme, the design of the longitudinal section of the installation part as dovetail-shaped plays a positioning and limiting role on the buffering part, and improves the structural stability of the buffering part.

[0018] Optionally, an edge cover is fixed to the circumferential side of each lining plate unit.

[0019] By adopting the above technical scheme, the arrangement of the edge cover protects the side edges of the ceramic composite plate, reduces the lateral impact and wear of the ceramic composite plate caused by the furnace charge, and prolongs the service life of the ceramic composite plate.

[0020] Optionally, the connecting member comprises a bolt.

[0021] By adopting the technical scheme, the bolt connection facilitates the disassembly and replacement of the lining plate unit.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] 1. The ceramic has a very high melting point and hardness, can maintain stable physical properties in a high-temperature environment of a blast furnace, effectively resist the scouring and friction of high-temperature furnace charges, and greatly prolong the service life of the distribution chute. Compared with ordinary metal lining plates, the wear resistance of the ceramic lining plate in a high-temperature wear environment is greatly improved, and the replacement frequency caused by rapid wear of the lining plate is greatly reduced.

[0024] 2. The blast furnace distribution chute bears different scouring and friction of the furnace charges. The bottom composite lining plate directly bears the vertical impact and sliding friction of the furnace charges, and the wear degree is often more serious; the lateral composite lining plate mainly bears the lateral friction and impact force in the falling process of the furnace charges. This targeted setting enables the entire ceramic composite lining plate to exert the best wear resistance at different positions, greatly improving the overall wear resistance of the distribution chute.

[0025] 3. The ceramic layer has high wear resistance, and its hardness is much higher than that of ordinary metals and most furnace charges, prolonging the replacement cycle of the lining plate and reducing the labor and material costs of frequent replacement of the lining plate; the rubber layer has good cushioning property, which can effectively buffer the impact force when the furnace charges fall, reducing the impact damage of the furnace charges to the ceramic layer; the lowermost steel plate layer provides good support strength, and is closely combined with the ceramic layer and the rubber layer to form a stable composite structure, enhancing the connection strength of the lining plate and the outer shell. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the overall structure of the lining plate unit in the embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the cross-sectional structure of the ceramic composite plate in the embodiment of the present application.

[0030] Fig. 1 is a shell; 2 is a heat-resistant plate; 3 is a ceramic composite lining plate; 31 is a bottom composite lining plate; 311 is a lining unit; 3111 is a ceramic composite plate; 31111 is a ceramic layer; 31112 is a rubber layer; 31113 is a steel plate layer; 32 is a lateral composite lining plate; 4 is a connecting piece; 41 is a bolt; 5 is a channel; 6 is a buffer assembly; 61 is a mounting portion; 62 is a buffer portion; 7 is an edge sealing. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The application is further described in detail.

[0032] The application discloses a wear-resistant long-service-life cloth chute.

[0033] Referring to Figure 1 A wear-resistant long-service-life cloth chute comprises a shell 1 and a heat-resistant plate 2 located at the bottom of the shell 1, and further comprises a ceramic composite lining plate 3 located on the inner wall of the shell 1. The ceramic composite lining plate 3 comprises a bottom composite lining plate 31 located on the inner bottom wall of the shell 1 and a lateral composite lining plate 32 located on the inner side wall of the shell 1. The blast furnace cloth chute bears different conditions of furnace charge scouring and friction. The bottom composite lining plate 31 directly bears the vertical impact and sliding friction of the furnace charge, and the wear degree is often more serious; the lateral composite lining plate 32 mainly bears the lateral friction force and impact force in the process of furnace charge falling. This targeted setting enables the entire ceramic composite lining plate 3 to exert the best wear resistance at different positions, greatly improving the overall wear resistance of the cloth chute.

[0034] Specifically, the bottom composite lining plate 31 comprises a plurality of abutting lining units 311, and a connecting piece 4 for connecting the lining units 311 and the shell 1 is arranged between the lining units 311 and the shell 1. The lining unit 311 comprises a plurality of ceramic composite plates 3111, and the ceramic composite plate 3111 comprises a ceramic layer 31111, a rubber layer 31112 and a steel plate layer 31113 from top to bottom. The ceramic layer 31111 has high wear resistance, and its hardness is much higher than that of ordinary metals and most furnace charges, thereby prolonging the replacement cycle of the lining plate and reducing the labor and material costs of frequent replacement of the lining plate; the rubber layer 31112 has good buffering property, and can effectively buffer the impact force when the furnace charge falls, thereby reducing the impact damage of the furnace charge to the ceramic layer 31111; the lowermost steel plate layer 31113 provides good support strength, is tightly combined with the ceramic layer 31111 and the rubber layer 31112, forms a stable composite structure, and enhances the connection strength of the lining plate and the shell 1. The connecting piece 4 is a bolt 41 fixed at the four corners of the lining unit 311.

[0035] In the installation, two adjacent ceramic composite plates 3111 form a channel 5, the length direction of the channel 5 is parallel to the width direction of the shell 1, and a buffer assembly 6 is installed in the channel 5. The buffer assembly 6 includes a mounting portion 61 located in the channel 5 and a buffer portion 62 protruding out of the channel 5, and the mounting portion 61 and the buffer portion 62 are fixedly connected, and are integrally formed in the embodiment. In order to position and limit the buffer portion 62 and improve the structural stability of the buffer portion 62, the longitudinal section of the mounting portion 61 is in the shape of a swallowtail. At the same time, this setting can also play a role in positioning and limiting the ceramic composite plate 3111. In other feasible embodiments, the longitudinal section of the mounting portion 61 can also be in the shape of an "L".

[0036] In addition, the peripheral side of each lining plate unit 311 is fixed with an edge 7. The setting of the edge 7 protects the side edge of the ceramic composite plate 3111, reduces the lateral impact and wear of the ceramic composite plate 3111 by the furnace charge, and prolongs the service life of the ceramic composite plate 3111.

[0037] The lateral composite lining plate 32 in the application is the same as the bottom composite lining plate 31 in the application, and the connection mode can be selected to be bonding. In practice, the bottom composite lining plate 31 is made of thicker or more wear-resistant ceramic materials and the combined rubber layer 31112 and steel plate layer 31113, which strengthens the protection of the bottom. For example, the ceramic layer 31111 of the bottom composite lining plate 31 is made of ceramic materials with finer particles and higher hardness, which can better resist the vertical impact and wear of the furnace charge. The lateral composite lining plate 32 mainly bears the lateral friction and impact force during the falling process of the furnace charge, and by reasonably adjusting the performance and thickness of each layer of material in the lateral composite lining plate 32, such as appropriately increasing the thickness of the rubber layer 31112 to enhance the buffering capacity, the special wear condition of the side wall can be effectively coped with.

[0038] The implementation principle of the wear-resistant long-life cloth chute in the embodiment is that the ceramic has a very high melting point and hardness, can maintain stable physical properties in a high-temperature environment of a blast furnace, effectively resist the erosion and friction of high-temperature furnace charge, and greatly prolong the service life of the cloth chute. Compared with ordinary metal lining plates, the wear resistance of the ceramic lining plate in a high-temperature wear environment is greatly improved, and the replacement frequency caused by too fast wear of the lining plate is greatly reduced.

[0039] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms "first", "second" or "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms "one", "another", "an" or "some" as well as similar referents in the context of describing the specification and claims are to be construed to be open-ended, i.e., to cover both singular and plural referents unless otherwise indicated. The terms "including", "containing" or "comprising" and the like are not intended to exclude other integers or steps, but to "include" or "comprise" other integers or steps unless otherwise indicated. The terms "connected", "coupled" or "pathway" are not restricted to direct connections, couplings or pathways but include indirect connections, couplings or pathways unless otherwise indicated. The terms "above", "below", "left", "right" and the like are only used to express relative positions such that if an absolute position of a described object is changed, the relative positions can also be changed accordingly.

[0040] The above are all optional embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A wear-resistant and long-life fabric chute, comprising a housing (1) and a heat-resistant plate (2) located outside the housing (1), characterized in that: It also includes a ceramic composite liner (3) located on the inner wall of the outer shell (1); The ceramic composite liner (3) includes a bottom composite liner (31) located on the inner bottom wall of the outer shell (1) and a lateral composite liner (32) located on the inner side wall of the outer shell (1); The bottom composite liner (31) includes a plurality of interconnected liner units (311), and a connector (4) for connecting the liner unit (311) and the outer shell (1) is provided; The liner unit (311) includes multiple ceramic composite plates (3111), which, from top to bottom, include a ceramic layer (31111), a rubber layer (31112), and a steel plate layer (31113).

2. The wear-resistant and long-life fabric chute according to claim 1, characterized in that: A channel (5) is formed between two adjacent ceramic composite plates (3111). The length direction of the channel (5) is parallel to the width direction of the outer shell (1). A buffer assembly (6) is installed in the channel (5). The buffer assembly (6) includes a mounting part (61) located in the channel (5) and a buffer part (62) protruding outside the channel (5). The mounting part (61) and the buffer part (62) are fixedly connected.

3. The wear-resistant and long-life fabric chute according to claim 2, characterized in that: The longitudinal section of the mounting part (61) is dovetail-shaped.

4. The wear-resistant and long-life fabric chute according to claim 1, characterized in that: Each of the liner units (311) has a sealing edge (7) fixed on its periphery.

5. The wear-resistant and long-life fabric chute according to claim 1, characterized in that: The connector (4) includes a bolt (41).

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