Blast furnace top distributor

Abstract

The utility model provides a blast furnace top distributor. The four-way distributor comprises a shell, a feeding port and four discharging ports, three lining plates are arranged in the shell, the height of each lining plate is the same as that of the interior of the shell, the interior space of the shell is divided into four sections of areas with the same volume through the three lining plates, and the four sections of areas are arranged in the shell. The discharge ports of the four areas are respectively formed in four directions of the shell; the lining plates are arranged in the width direction of the shell side by side, three pairs of lug plates are arranged in the length direction of the shell and matched with the positions of the lining plates, striker plates are detachably installed above the lining plates, and the specifications of the striker plates are the same. The detachable striker plate structure with the bolt structure is installed above the lining plate, the striker plate is replaced after the striker plate is abraded, the situation that the wall body of the whole distributor is damaged due to the fact that the lining plate is abraded in a large area is avoided, the service life of the distributor is greatly prolonged, and the ironmaking cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of blast furnace smelting, and particularly relates to a blast furnace top distributor. BACKGROUND

[0002] The existing large blast furnace feeding system is all belt feeding, and the furnace burden transported from the main belt passes through the receiving tank and the weighing tank, and finally is distributed into the furnace by the distributing chute. However, the furnace burden transported from the main belt into the receiving tank will segregate, and in order to reduce or avoid the segregation of the particle size of the furnace burden, the existing technology realizes it by adopting such as rotary mechanism, increasing the feeding point; setting multiple empty tubes in the bin, and the material enters the bin from different heights and directions through multiple windows; adopting thin and high bin to reduce the stratification of the material in the bin; double-pass and triple-pass distribution method, etc. For the small blast furnace with the volume of 100-500 cubic meters, the above-mentioned method can be easily realized by modifying the equipment, but for the large blast furnace with the volume of more than 1000 cubic meters, especially more than 3200m 3 , with the large distribution of the furnace burden, the baffle on the wall of the distributor will be seriously impacted, the segregation prevention device has a very short service life, and the above-mentioned improvement is difficult to effectively realize the segregation of the particle size of the furnace burden or needs to expand the volume of the device in the modification process, which increases the burden of the blast furnace body. SUMMARY

[0003] According to the above-mentioned technical problem, a blast furnace top distributor is provided. The technical means adopted by the utility model is as follows:

[0004] A blast furnace top distributor, comprising a four-way distributor, the four-way distributor comprising a shell, a feeding port and four discharging ports, three lining plates are arranged in the interior of the shell, the height of each lining plate is the same as the height of the interior of the shell, the interior of the shell is divided into four regions with equal volume by the three lining plates, and the discharging ports of the four regions are arranged in four directions of the shell; the lining plates are arranged side by side in the width direction of the shell, three pairs of ear plates are arranged along the length direction of the shell in cooperation with the positions of the lining plates, the blocking plates are detachably arranged above the lining plates, and the specifications of the blocking plates are the same.

[0005] Further, screw holes are arranged on the ear plates and the blocking plates, and the connection between the blocking plates and the ear plates is realized by passing through the bolts.

[0006] Further, the lining plates are respectively first lining plate, second lining plate and third lining plate along the length direction of the shell, the area between the first lining plate and the left side plate of the shell is the first discharging area, the area between the first lining plate and the second lining plate is the second discharging area, the area between the second lining plate and the third lining plate is the third discharging area, the area between the third lining plate and the right side plate of the shell is the fourth discharging area, the discharging port of the first discharging area is arranged at the bottom center position of the left side plate of the shell, the discharging port of the second discharging area is arranged at the bottom of the front side plate of the shell, the center position between the first lining plate and the second lining plate, the discharging port of the third discharging area is arranged at the bottom of the rear side plate of the shell, the center position between the second lining plate and the third lining plate, and the discharging port of the fourth discharging area is arranged at the bottom center position of the right side plate of the shell.

[0007] Further, the upper part of the blast furnace top distributor is provided with a feeding belt, and the bottom end of the blast furnace top distributor is sequentially provided with a receiving tank and a weighing tank.

[0008] The utility model has the following advantages:

[0009] 1. The four-way distributor is installed, the four-way distributor uniformly distributes the furnace charge to four directions, and the four-way distributor is uniformly provided with wear-resistant lining plates inside, so that the uniform distribution of the furnace charge in four directions and the blocking effect of the wear-resistant lining plates effectively reduce the grain size segregation of the furnace charge.

[0010] 2. The upper part of the lining plate is provided with a blocking plate structure of a bolt structure that can be disassembled, the blocking plate is replaced when it is worn out, the large-area wear of the lining plate is prevented, the wall body of the entire distributor is prevented from being damaged, the service life of the distributor is greatly prolonged, and the ironmaking cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Fig. 1 It is a schematic view of the distributor structure of the utility model.

[0013] Fig. 2 It is a plan view of the distributor of the utility model.

[0014] Fig. 3 It is a blast furnace feeding process diagram of the utility model.

[0015] In the figure: 1, the lining plate; 2, the discharge port; 3, the screw hole; 4, the bolt; 5, the material blocking plate; 6, the feeding belt; 7, the receiving tank; 8, the weighing tank. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] As Figs. 1-3 shown, the utility model discloses a blast furnace top distributor, including four -way distributor, four -way distributor includes the casing, feed inlet and four discharge ports, the inside of casing is provided with three lining plates 1, and the height of each lining plate is same with the height in the casing, and the inside space of casing is divided into four volume equivalent regions through three lining plates, and the discharge port 2 of four regions is arranged in the four directions of casing respectively.

[0018] The casing can be a rectangular cavity with a length-width ratio of 3:1, or other specifications of rectangular cavity, or a deformation of the rectangular cavity with a preset downward inclination in the inner wall of the casing, i.e. an inverted trapezoidal cavity. Of course, if a non-rectangular cavity is used, a calculation or finite element simulation optimization method needs to be used to ensure the four equal division of the volume as much as possible. On the one hand, it is to ensure that the impact and wear of the material falling on the lining plate and the material blocking plate are as consistent as possible, which is convenient for the same nature when the material blocking plate needs to be replaced due to damage.

[0019] Further, the ear plate is provided with a screw hole 3, and the material blocking plate is provided with a screw hole, and the connection of the material blocking plate and the ear plate is completed by the bolt 4 penetrating through the two.

[0020] Further, the lining plates are respectively first lining plate, second lining plate and third lining plate along the length direction of the shell, the area between the first lining plate and the left side plate of the shell is the first discharging area, the area between the first lining plate and the second lining plate is the second discharging area, the area between the second lining plate and the third lining plate is the third discharging area, the area between the third lining plate and the right side plate of the shell is the fourth discharging area, the discharging port of the first discharging area is arranged at the bottom center position of the left side plate of the shell, the discharging port of the second discharging area is arranged at the bottom of the front side plate of the shell, the center position between the first lining plate and the second lining plate, the discharging port of the third discharging area is arranged at the bottom of the rear side plate of the shell, the center position between the second lining plate and the third lining plate, and the discharging port of the fourth discharging area is arranged at the bottom center position of the right side plate of the shell. As an optional embodiment, the bottom of each discharging port is provided with a discharging flange interface.

[0021] Further, the upper part of the blast furnace top distributor is provided with a feeding belt, and the bottom end of the blast furnace top distributor is sequentially provided with a receiving tank 7 and a weighing tank 8. In the embodiment, the feeding belt is one, and the material is thrown from the right side. In actual production, the number of feeding belts and the feeding mode can be adjusted according to actual conditions.

[0022] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blast furnace top feeder, characterized in that, The device includes a four-way distributor, which comprises a housing, an inlet, and four outlets. The housing has three liner plates inside, each with the same height as the housing's interior. These liner plates divide the interior space of the housing into four equal-volume regions. The outlets for the four regions are located in the four directions of the housing. The liner plates are arranged side-by-side along the width of the housing. Along the length of the housing, three pairs of lugs are provided to match the positions of the liner plates. Baffle plates, all of the same specifications, are detachably installed above the liner plates.

2. The blast furnace top feeder according to claim 1, characterized in that, The ear plate is provided with screw holes, and the baffle plate is provided with screw holes. The baffle plate and the ear plate are connected by bolts passing through both.

3. The blast furnace top feeder according to claim 1, characterized in that, The lining plates along the length of the shell are designated as a first lining plate, a second lining plate, and a third lining plate. The area between the first lining plate and the left side plate of the shell is the first material discharge zone. The area between the first lining plate and the second lining plate is the second material discharge zone. The area between the second lining plate and the third lining plate is the third material discharge zone. The area between the third lining plate and the right side plate of the shell is the fourth material discharge zone. The discharge port of the first material discharge zone is located at the bottom center of the left side plate of the shell. The discharge port of the second material discharge zone is located at the bottom center of the front side plate of the shell, between the first and second lining plates. The discharge port of the third material discharge zone is located at the bottom center of the rear side plate of the shell, between the second and third lining plates. The discharge port of the fourth material discharge zone is located at the bottom center of the right side plate of the shell.

4. The blast furnace top feeder according to claim 1, characterized in that, A feeding belt is installed above the blast furnace top distributor, and a receiving hopper and a weighing hopper are installed sequentially at the bottom of the blast furnace top distributor.

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