Blast furnace capable of controlling automatic return of nut coke

Abstract

The utility model relates to the technical field of mining production and processing, and discloses a blast furnace capable of controlling automatic return of coke nuts, which comprises a coke bin, a coke vibrating screen is arranged on the right side of the coke bin, and an equivalent equalization structure is arranged on the surface of a coke return belt. The equal-quantity equal-distribution structure comprises a fixed block, a vertical block, a hydraulic rod, a spring, a trapezoidal abutting block, an L-shaped elastic piece and a driven piece, the surface of the coke bin is fixedly connected with the surface of the fixed block, and by arranging the equal-quantity equal-distribution structure, when coke is taken out of the coke bin and discharged through the coke nut hopper and the weighing hopper, the coke on the coke returning belt is conveyed to the middle hopper, and the coke nut is conveyed to the middle hopper through the hydraulic rod. The hydraulic rod is started, then the shifting disc equally divides the coke on the coke return belt, and therefore the amount of the coke falling into the middle hopper can be controlled, it is guaranteed that the coke cannot be stacked together, the coke entering the furnace keeps a certain particle size, and the air permeability of furnace burden is improved in the whole smelting period.

Description

Technical Field

[0001] The utility model relates to the technical field of mining production and processing, in particular to a blast furnace capable of controlling the automatic return of coke diced. Background Art

[0002] A blast furnace is a device used to smelt molten iron and is the most common smelting equipment in the modern steel industry. Blast furnaces are usually made of steel bars and refractory bricks and are tower-shaped or cylindrical. There are three areas inside the blast furnace: the upper part, the middle part, and the lower part. Blast furnace smelting is characterized by high efficiency, continuity, and large scale, and is one of the core equipment in the steel industry. The technology of blast furnaces is constantly improving, and many new blast furnaces have emerged, such as blast furnace gas power generation technology and multi-furnace co-balancing technology, to improve energy efficiency and reduce environmental pollution.

[0003] When a blast furnace is working, raw materials such as coke, iron ore and limestone are first loaded into the top of the blast furnace, and air is sprayed into the tuyere on the top of the furnace to burn the raw materials in the blast furnace. The burning coke generates high temperature and reduces the iron ore to iron, while the limestone is used to absorb impurities such as sulfur and silicon. Metallic iron is mainly produced in the lower area of ​​the blast furnace, while slag is formed in the upper and middle areas. When the blast furnace is working, it needs to continuously supply fuel and raw materials, and discharge molten iron and slag from the bottom. The molten iron is used to produce steel after treatment, and the slag can be used in building materials and other fields after cooling.

[0004] However, before the existing blast furnace is put into operation, the coke is taken out from the coke bin and screened, and then transported to the intermediate bucket through the coke diced bucket and the weighing bucket via the coke return belt. When on the coke return belt, coke is prone to accumulation, resulting in an uneven proportion of coke falling into the intermediate bucket, which leads to reduced air permeability in the blast furnace when the blast furnace is working. In view of this, we propose a blast furnace that can control the automatic return of coke diced. Utility Model Content

[0005] The utility model aims to provide a blast furnace capable of controlling the automatic return of coke pieces, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace capable of controlling the automatic return of coke diced, comprising a coke bin, a coke vibrating screen is arranged on the right side of the coke bin, a coke diced bucket and a weighing bucket are arranged on the right side of the coke vibrating screen, a return coke belt and a main belt are arranged on the right side of the weighing bucket, an intermediate bucket is arranged on the right side of the main belt, an equal amount equalization structure is arranged on the surface of the return coke belt, and the coke on the return coke belt can be equally divided by arranging the equal amount equalization structure, and the equal amount equalization structure comprises: a fixed block, a vertical block, a hydraulic rod, a spring, a trapezoidal abutment block, an L-shaped spring piece, and a follower, the surface of the coke bin is fixedly connected to the surface of the fixed block, and a vertical block is arranged on the top of the fixed block. After the internal coke is screened by the coke vibrating screen, it is discharged through the coke bucket and the weighing bucket. At this time, when the coke on the return coke belt is in the transportation process, the hydraulic rod is started to make the four-page turntable rotate on the round rod, and the U-shaped spring piece limits the rotation of the round rod. Each time the trapezoidal contact block contacts the four-page turntable, the toggle plate will only rotate 90°, so that the coke on the return coke belt can be divided equally. A hydraulic rod is arranged on the surface of the vertical block, and a spring is arranged in the middle of the vertical block, and the spring is sleeved on the surface of the hydraulic rod. The surface of the hydraulic rod is fixedly connected to the surface of the trapezoidal contact block, and an L-shaped spring piece is arranged on the side of the trapezoidal contact block. A follower is arranged on the top of the fixed block, and the setting of the follower can make the toggle plate rotate intermittently.

[0007] Preferably, the follower comprises: a round rod, the top of the fixed block is rotatably connected to the bottom of the round rod, the surface of the round rod is sleeved with a four-page turntable, the top of the four-page turntable is provided with a square box, the two sides of the square box are slidably connected to the surface of the U-shaped spring piece, and the top of the round rod is fixedly connected to the bottom of the dial.

[0008] Preferably, a cavity is provided inside the coke dice bucket, and the cavity inside the coke dice bucket is arranged so that the coke inside the coke bin can be screened into coke dice and coke powder by the coke vibration screen, and the cavity is used to store the coke dice.

[0009] Preferably, a cavity is provided inside the weighing bucket, and the cavity inside the weighing bucket is used to store coke powder in the screened coke.

[0010] Preferably, the surface of the U-shaped spring piece is fixedly connected to the surface of the vertical block.

[0011] Preferably, a groove is provided on the surface of the square box, and the groove provided on the surface of the square box can provide space for the round rod to rotate.

[0012] Compared with the prior art, the utility model provides a blast furnace capable of controlling the automatic return of coke pieces, which has the following beneficial effects:

[0013] The blast furnace capable of controlling the automatic return of coke pieces is provided with an equal amount distribution structure. When the coke is taken out from the coke bin and discharged through the coke piece bucket and the weighing hopper, when the coke on the coke return belt is transported to the intermediate bucket, the hydraulic rod is started, and then the toggle plate will divide the coke on the coke return belt into equal amounts, so that the amount of coke falling into the intermediate bucket can be controlled, thereby ensuring that the coke will not pile up together and that the coke entering the furnace maintains a certain particle size, thereby increasing the permeability of the charge during the entire smelting cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 2 This is a schematic diagram of an enlarged structure of an equal-amount-divided structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 The enlarged structural diagram in the middle.

[0017] In the figure: 1. coke bin; 2. coke vibrating screen; 3. coke dicing bucket; 4. weighing bucket; 5. coke return belt; 6. main belt; 7. intermediate bucket; 8. equal distribution structure; 81. fixed block; 82. vertical block; 83. hydraulic rod; 84. spring; 85. trapezoidal resistance block; 86. L-shaped spring piece; 87. driven part; 871. round rod; 872. four-page turntable; 873. square box; 874. U-shaped spring piece; 875. toggle plate. DETAILED DESCRIPTION

[0018] like Figure 1-3 As shown, the utility model provides a technical solution: a blast furnace capable of controlling the automatic return of coke pieces, comprising a coke bin 1, a coke vibrating screen 2 is arranged on the right side of the coke bin 1, a coke piece bucket 3 and a weighing bucket 4 are arranged on the right side of the coke vibrating screen 2, a return coke belt 5 and a main belt 6 are arranged on the right side of the weighing bucket 4, an intermediate bucket 7 is arranged on the right side of the main belt 6, an equal amount equalization structure 8 is arranged on the surface of the return coke belt 5, and the coke on the return coke belt 5 can be equally divided by arranging the equal amount equalization structure 8, and the equal amount equalization structure 8 comprises: a fixed block 81, a vertical block 82, a hydraulic rod 83, a spring 84, a trapezoidal resistance block 85, an L-shaped spring piece 86, and a follower 87.

[0019] The surface of the coke bin 1 is fixedly connected to the surface of the fixed block 81. A vertical block 82 is provided on the top of the fixed block 81. After the coke in the coke bin 1 is screened by the coke vibrating screen 2, the coke is discharged through the coke bucket 3 and the weighing bucket 4. When the coke on the coke return belt 5 is in the process of transportation, the hydraulic rod 83 is started, and then the hydraulic rod 83 extends forward. At this time, the trapezoidal abutment block 85 on the hydraulic rod 83 will abut against the four-page turntable 872, so that the four-page turntable 872 rotates on the round rod 871. At the same time, the U-shaped spring piece 874 limits the rotation of the round rod 871. Each time the trapezoidal abutment block 85 abuts against the four-page turntable 872, the toggle plate 875 will only rotate 90°, so that the coke on the coke return belt 5 can be equally divided.

[0020] A hydraulic rod 83 is disposed on the surface of the vertical block 82, a spring 84 is disposed in the middle of the vertical block 82, and the spring 84 is sleeved on the surface of the hydraulic rod 83;

[0021] The surface of the hydraulic rod 83 is fixedly connected to the surface of the trapezoidal abutment block 85, and the side of the trapezoidal abutment block 85 is provided with an L-shaped spring piece 86;

[0022] A follower 87 is disposed on the top of the fixed block 81 , and the arrangement of the follower 87 can cause the dial 875 to rotate intermittently.

[0023] The follower 87 includes: a round rod 871, the top of the fixed block 81 is rotatably connected to the bottom of the round rod 871, the surface of the round rod 871 is sleeved with a four-page turntable 872, the top of the four-page turntable 872 is provided with a square box 873, the two sides of the square box 873 are slidably connected to the surface of the U-shaped spring piece 874, and the top of the round rod 871 is fixedly connected to the bottom of the dial 875.

[0024] A cavity is provided inside the coke bucket 3, a cavity is provided inside the weighing bucket 4, the surface of the U-shaped spring piece 874 is fixedly connected to the surface of the vertical block 82, and a groove is provided on the surface of the square box 873.

[0025] Working principle: By setting up an equal amount distribution structure 8, the coke on the return coke belt 5 can be equally distributed. After the coke inside the coke bin 1 is screened by the coke vibrating screen 2, it is discharged through the coke bucket 3 and the weighing bucket 4. At this time, when the coke on the return coke belt 5 is in the transportation process, the hydraulic rod 83 is started, and then the hydraulic rod 83 is extended forward. At this time, the trapezoidal resistance block 85 on the hydraulic rod 83 will resist the four-page turntable 872, so that the four-page turntable 872 rotates on the round rod 871, and the U-shaped spring piece 874 limits the rotation of the round rod 871. Each time the trapezoidal resistance block 85 resists the four-page turntable 872, the toggle plate 875 will only rotate 90°, so that the coke on the return coke belt 5 can be equally distributed. The setting of the follower 87 can make the toggle plate 875 rotate intermittently.

[0026] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A blast furnace capable of controlling the automatic return of coke diced, comprising a coke bin (1), characterized in that: The coke bin (1) is provided with a coke vibrating screen (2) on the right side, a coke dicing bucket (3) and a weighing bucket (4) on the right side of the coke vibrating screen (2), a coke return belt (5) and a main belt (6) on the right side of the weighing bucket (4), an intermediate bucket (7) on the right side of the main belt (6), and an equal amount distribution structure (8) on the surface of the coke return belt (5), the equal amount distribution structure (8) comprising: A fixed block (81), the surface of the coke bin (1) is fixedly connected to the surface of the fixed block (81), and a vertical block (82) is arranged on the top of the fixed block (81); A hydraulic rod (83), the surface of the vertical block (82) is provided with the hydraulic rod (83), a spring (84) is provided in the middle of the vertical block (82), and the spring (84) is sleeved on the surface of the hydraulic rod (83); A trapezoidal abutment block (85), the surface of the hydraulic rod (83) being fixedly connected to the surface of the trapezoidal abutment block (85), and an L-shaped spring sheet (86) being arranged on the side of the trapezoidal abutment block (85); A follower (87), a follower (87) is arranged on the top of the fixed block (81).

2. A blast furnace capable of controlling the automatic return of coke pieces according to claim 1, characterized in that: The driven member (87) comprises a round rod (871), the top of the fixed block (81) is rotatably connected to the bottom of the round rod (871), the surface of the round rod (871) is sleeved with a four-page rotating disk (872), the top of the four-page rotating disk (872) is provided with a square box (873), the two sides of the square box (873) are slidably connected to the surface of the U-shaped spring sheet (874), and the top of the round rod (871) is fixedly connected to the bottom of the dial (875).

3. A blast furnace capable of controlling the automatic return of coke diced according to claim 1, characterized in that: The coke bucket (3) has a cavity inside.

4. A blast furnace capable of controlling the automatic return of coke diced according to claim 1, characterized in that: The weighing bucket (4) has a cavity inside.

5. The blast furnace capable of controlling the automatic return of coke pieces according to claim 2, characterized in that: The surface of the U-shaped spring piece (874) is fixedly connected to the surface of the vertical block (82).

6. A blast furnace capable of controlling the automatic return of coke pieces according to claim 2, characterized in that: The surface of the square box (873) is provided with a groove.

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