CN203700401U - Detachable wear-resistant lining plate of blast furnace collection hopper - Google Patents

Abstract

The utility model discloses a detachable wear-resistant liner for a blast furnace collecting hopper, which comprises a main body of the liner, wherein a plurality of strip-shaped protrusions are arranged on the inner surface of the main body of the liner, and every two adjacent strip-shaped Grooves are formed between the protrusions, at least two installation holes are formed on the upper part of the liner main body, and the liner main body is fixed on the collecting hopper through connecting pieces corresponding to the at least two installation holes. According to the utility model, the detachable wear-resistant liner of the blast furnace collecting hopper has the characteristics of long service life, simple manufacture, low cost and convenient installation and replacement, thereby reducing the maintenance time and difficulty of the liner.

Description

Removable wear-resistant linings for blast furnace collecting hoppers

technical field

The utility model belongs to the field of smelting, in particular to a detachable wear-resistant liner for a collecting hopper of a blast furnace.

Background technique

In the process of blast furnace smelting, it is necessary to install a wear-resistant lining plate in the collecting hopper on the top of the furnace to buffer the impact of falling materials. Fig. 1 is a schematic diagram showing the structure of a conventional blast furnace collecting hopper. As shown in Figure 1, a liner 8 is installed on the inner wall of the side of the collecting hopper 6 facing the main belt 7, when the main belt 7 of the blast furnace transports ore into the collecting hopper 6 and then falls from the upper chute 9, the falling The mineral material will have a greater impact on the lining plate 8, causing the lining plate 8 to wear. Usually, 3 to 5 severely worn liners need to be replaced every 3 months during the blast furnace shutdown. However, due to the large amount of dust in the collecting hopper, the small space, and the poor working environment, and each liner is usually fixed through a through hole on the inner wall of the collecting hopper, the disassembly and replacement of the liner is very complicated and time-consuming. And the workers need to weld for a long time in the collecting hopper. Usually, each blast furnace is shut down for maintenance every 3 months on average, and it takes 4 people and 4 hours to replace the lining board during this period.

At present, the improvement of the wear resistance of the liner generally adopts the method of improving the material of the liner or welding wear-resistant blocks on the liner. However, these methods can only slightly prolong the replacement cycle of the liner, and it is inevitable that the time-consuming and manpower-consuming replacement of the liner is still necessary, and the use of a material with excellent wear resistance to manufacture the liner will significantly increase the cost.

Utility model content

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a detachable wear-resistant liner for a blast furnace collecting hopper which is easy to install and has strong wear resistance.

According to the utility model, there is provided a detachable wear-resistant lining board for a blast furnace collecting hopper, which includes a main body of the lining board, wherein a plurality of strip-shaped protrusions are arranged on the inner surface of the main body of the lining board, and every two adjacent Grooves are formed between the strip-shaped protrusions, at least two installation holes are formed on the upper part of the liner main body, and the liner main body is fixed on the collecting hopper through connecting pieces corresponding to the at least two installation holes .

According to the present invention, the plurality of strip-shaped protrusions may be composed of a plurality of rail steels. Preferably, the plurality of rail steels are rail steels of standard type 60kg/m.

According to the present invention, the plurality of rail steels can be fixed on the liner main body by welding or using bolts.

According to the present invention, the plurality of rail steels can be laterally fixed on the liner main body.

Preferably, the 2-3 track steels located at the lowest part of the main body of the liner are most densely arranged. The distance between the bottom edges of every two adjacent 2-3 track steels at the bottom of the liner main body is 80mm-100mm, and the bottom edge of every two adjacent track steels at the upper part of the liner main body The distance between them is 200mm-300mm.

According to the present invention, the liner main body may have a trapezoid shape suitable for the shape of the collecting hopper.

According to the utility model, the connecting piece can be a hook and be fixed on the collecting hopper, the at least two installation holes can be through holes, and the liner main body is hung on the collecting hopper through the through holes through the hooks .

According to the present invention, the at least two installation holes are substantially horizontally arranged on the upper part of the liner main body.

According to the utility model, the detachable wear-resistant liner of the blast furnace collecting hopper has the characteristics of long service life, simple manufacture, low cost and convenient installation and replacement, thereby reducing the maintenance time and difficulty of the liner.

Description of drawings

Fig. 1 is a schematic diagram showing the structure of a conventional blast furnace collecting hopper.

FIG. 2 is a cross-sectional view illustrating a detachable wear-resistant lining of a blast furnace collecting hopper according to an exemplary embodiment of the present invention.

FIG. 3 is a left side view showing a removable wear liner of the blast furnace collecting hopper in FIG. 2 .

FIG. 4 is a top view showing a removable wear liner of the blast furnace collecting hopper in FIG. 2 .

Detailed ways

The detachable wear-resistant liner of the blast furnace collecting hopper according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view illustrating a detachable wear-resistant lining of a blast furnace collecting hopper according to an exemplary embodiment of the present invention. FIG. 3 is a left side view showing a removable wear liner of the blast furnace collecting hopper in FIG. 2 . FIG. 4 is a top view showing a removable wear liner of the blast furnace collecting hopper in FIG. 2 .

As shown in Fig. 2, Fig. 3 and Fig. 4, the detachable wear-resistant lining board of the blast furnace collecting hopper according to the utility model includes a lining board main body 1, and a plurality of strip-shaped protrusions are arranged on the inner surface of the lining board main body 1 2. A groove 3 is formed between every two adjacent strip-shaped protrusions 2, and at least two installation holes 4 are formed on the upper part of the liner main body 1, and the liner main body 1 passes through at least two installation holes 4 corresponding connectors are fixed on the collecting hopper. Since the groove 3 is formed on the liner main body 1, when the material falls, the material that falls first will form an accumulation in the groove 3, thereby forming a protective layer, which can relieve the impact of the subsequent falling material, thus effectively extending the The service life of the liner.

According to the present invention, a plurality of strip-shaped protrusions 2 can be made of a plurality of rail steels (I-beams), and can be fixed laterally on the liner main body 1 by welding or using bolts 5 . A plurality of strip-shaped protrusions 2 are preferably made of a plurality of standard type 60kg/m track steel (specific parameters are: height 176mm, bottom width 150mm, top width 73mm, waist thickness 16.5mm), so that good durability can be ensured. Grinding strength, without making the liner too heavy and burdening the collecting hopper. Since the rail steel can be directly used, it is more convenient to manufacture. However, the present invention is not limited thereto, and the plurality of strip-shaped protrusions 2 can also be made of other wear-resistant materials. In addition, the number of strip-shaped protrusions 2 can be adjusted according to actual conditions, for example, it can be set according to the size of the collecting hopper. The spacing of multiple strip-shaped protrusions 2 can also be adjusted according to actual needs. For example, because the main impact on the lining board when the material falls is concentrated on the lower part of the lining board, the 2 to 3 strips located at the bottom of the main body of the lining board The arrangement of track steel is the densest, and the distance between the bottom edges of every two adjacent 2-3 track steels located at the bottom of the liner main body can be 80mm-100mm, and for the upper track of the liner main body 1 The distance between the steels can be appropriately increased according to actual needs. Preferably, the distance between the bottom edges of every two adjacent track steels on the upper part of the liner main body is 200mm-300mm.

In addition, the liner main body 1 can have a trapezoidal shape suitable for the shape of the collecting hopper, so as to match the trapezoidal shape of the inner wall of the collecting hopper, so that the liner main body 1 is more stable and not easy to slide after installation. The connector can be a hook and be fixed on the collecting hopper. At least two mounting holes 4 can be two substantially parallel through holes. It can prevent the liner main body 1 from swinging or sliding, and makes removal and installation more convenient. Referring to Fig. 1, when replacing the detachable wear-resistant liner of the blast furnace collecting hopper according to the utility model, the upper movable door 11 on the dust removal cover 10 above the collecting hopper 6 is opened, and then the old liner is moved from above The door 11 is hung out, and the new liner plate that has been made in advance is hung in from the upper dodge door 11 and hung on the hook to complete the replacement process, without the need for workers to weld for a long time in the collecting hopper 6, significantly Reduced labor intensity.

The following examples are only used to describe the utility model in detail, and do not limit the scope of the utility model in any way.

Example 1:

Manufacture the detachable wear-resistant lining plate of the blast furnace collecting hopper according to Embodiment 1 of the present utility model as shown in Fig. 2 , Fig. 3 and Fig. 4 .

Specifically, first, a 20mm thick steel plate is used to manufacture the liner main body 1 according to the shape and size of the collecting hopper. Then, four 50# rail steels are laterally fixed on the liner main body 1 through bolts 5 . Next, two roughly horizontal installation holes 4 are provided above the liner main body 1, and the hooks corresponding to the installation holes 4 are welded on the collecting hopper, so that the liner main body 1 can be hung on the collection hopper through the installation holes 4 through the hooks. on the hopper. According to Embodiment 1 of the utility model, the detachable wear-resistant liner of the blast furnace collecting hopper needs to be replaced on average every 6 months, and each replacement only needs 2 people and half an hour to complete.

Therefore, the detachable wear-resistant lining plate of the blast furnace collecting hopper according to the utility model has the characteristics of long service life, simple manufacture, low cost and convenient installation and replacement, thereby reducing the maintenance time and difficulty of the lining plate.

The present utility model is not limited to the above-mentioned embodiments, and various variations and modifications can be made to the embodiments of the present utility model without departing from the spirit and scope of the present utility model.

Claims (9)

1. the detachable abrasion-proof backing block of a blast furnace aggregate bin, comprise liner plate main body, it is characterized in that, arranging multiple strip projected parts things at the internal surface of liner plate main body, between every two adjacent strip projected parts things, be formed with groove, at least two open holess are formed on the top of described liner plate main body, and described liner plate main body is fixed on aggregate bin by the web member corresponding with described at least two open holess.

2. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 1, is characterized in that, described multiple strip projected parts things are made up of multiple rail steels.

3. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 2, is characterized in that, described multiple rail steels are bolted in described liner plate main body by welding or utilizing.

4. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 2, is characterized in that, described multiple rail steels are laterally fixed in described liner plate main body.

5. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 4, is characterized in that, the setting of 2～3 rail steels that is positioned at the foot of liner plate main body is the most intensive.

6. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 5, it is characterized in that, distance between the bottom edge of 2～3 rail steels of every two adjacent foots in liner plate main body is 80mm～100mm, and the distance between the bottom edge of the rail steel on every two adjacent tops in liner plate main body is 200mm～300mm.

7. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 1, is characterized in that, described liner plate main body has and is suitable for the trapezoidal of aggregate bin shape.

8. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 1, it is characterized in that, described web member is for linking up with and being fixed on aggregate bin, and described at least two open holess are through hole, and described liner plate main body hangs on aggregate bin through described through hole by hook.

9. the detachable abrasion-proof backing block of blast furnace aggregate bin according to claim 1, is characterized in that, described at least two open holess are flatly arranged in the top of described liner plate main body.