Automatic weighing and blanking device for blast furnace

Abstract

The utility model discloses an automatic weighing and blanking device for a blast furnace, and relates to the technical field of blanking devices. The dust removal device comprises a bottom plate, supporting columns are symmetrically and fixedly connected to the top end, close to the center, of the bottom plate, a portal frame is fixedly connected between the top ends of the two supporting columns, a funnel straight section is fixedly connected to the center in the portal frame, and a dust removal shield is fixedly connected to the top end of the funnel straight section. A compensator is fixedly connected to the top end of the dust removal shield, an oil pressure device is fixedly connected to the bottom end of the straight section of the funnel, a discharging opening is fixedly connected to the bottom end of the oil pressure device, a valve is fixedly connected to the bottom end of the discharging opening, and a material receiving box is slidably connected to the position, close to the bottom, between the two supporting columns and located in the center of the lower portion of the valve. According to the utility model, the valve is arranged, and under the matching action of the oil pressure device, the problem of inaccurate raw material proportioning caused by uncontrollable raw material conveying accuracy is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of material feeding devices, in particular to an automatic weighing material feeding device for a blast furnace. Background Art

[0002] The blast furnace is made of steel plates as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, body, waist, belly, and hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency, and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron production. The blast furnace needs to consume a lot of fuel when in use, and the combustion efficiency needs to be controlled at different processing nodes. Due to the different volumes of raw fuels, there will be different combustion effects during combustion;

[0003] At present, in blast furnace smelting technology, the accuracy of raw material delivery cannot be controlled, which will cause inaccurate raw material ratio, thus affecting the smelting quality of steel. At the same time, under the increasingly stringent requirements of environmental protection, higher requirements are placed on dust removal in the unloading process. In view of the above problems, the inventors propose an automatic weighing and unloading device for blast furnaces to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the raw material delivery accuracy cannot be controlled, which will cause inaccurate raw material ratio, and the environmental protection requirements have high requirements for the unloading process; the purpose of the utility model is to provide an automatic weighing and unloading device for blast furnaces.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: an automatic weighing and unloading device for a blast furnace, comprising a base plate, pillars are symmetrically fixedly connected to the top of the base plate and near the center, a gantry is fixedly connected between the tops of two of the pillars, a straight section of a funnel is fixedly connected to the center of the gantry, a dust removal shield is fixedly connected to the top of the straight section of the funnel, a compensator is fixedly connected to the top of the dust removal shield, an oil pressure device is fixedly connected to the bottom of the straight section of the funnel, a unloading port is fixedly connected to the bottom of the oil pressure device, and a valve is fixedly connected to the bottom of the unloading port.

[0006] Preferably, a material receiving box is slidably connected between the two pillars and near the bottom, and the material receiving box is located at the center below the valve, and sieve plate 1 and sieve plate 2 are symmetrically provided near both sides inside the material receiving box, a long axis is fixedly connected at the center of the bottom end of the material receiving box, and a roller is fixedly connected to the bottom end of the long axis.

[0007] Preferably, a conveying device is symmetrically fixedly connected to the top of the base plate near the center, a bottom cover is fixedly connected to the top of the base plate near the center, a turntable is rotatably connected to the top of the bottom cover, a plurality of inclined blocks are fixedly connected to the top of the turntable near the center, and the plurality of inclined blocks are distributed in a ring shape, and the inclined blocks cooperate with rollers.

[0008] Preferably, a motor is fixedly connected to the center of the top end inside the bottom cover, and the output end of the motor passes through the bottom cover and is fixedly connected to the center of the turntable.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model solves the problem of high requirements for environmental protection and material cutting process by setting a dust removal cover;

[0011] 2. The utility model solves the problem of inaccurate raw material ratio caused by uncontrollable raw material delivery accuracy through the arrangement of valves and the cooperation of the oil pressure device;

[0012] 3. In the utility model, the motor is operated, and then the turntable, the inclined block, the roller, the long shaft, and the material receiving box cooperate with each other, so as to achieve the effect of classifying fuels of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the material receiving box of the utility model.

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the bottom cover of the utility model.

[0017] In the figure: 1. compensator; 2. dust removal shield; 3. straight section of funnel; 4. discharge port; 5. hydraulic device; 6. valve; 7. gantry; 71. support; 72. receiving box; 73. sieve plate 1; 74. sieve plate 2; 75. long shaft; 76. roller; 8. bottom plate; 81. conveying device; 82. bottom cover; 83. motor; 84. turntable; 85. inclined block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: Figure 1-3 As shown, the utility model provides a technical solution: an automatic weighing and unloading device for a blast furnace, comprising a bottom plate 8, a support 71 is symmetrically fixedly connected to the top of the bottom plate 8 and near the center, a gantry 7 is fixedly connected between the tops of the two support pillars 71, a funnel straight section 3 is fixedly connected to the center inside the gantry 7, a dust removal shield 2 is fixedly connected to the top of the funnel straight section 3, a compensator 1 is fixedly connected to the top of the dust removal shield 2, an oil pressure device 5 is fixedly connected to the bottom of the funnel straight section 3, a unloading port 4 is fixedly connected to the bottom of the oil pressure device 5, and a valve 6 is fixedly connected to the bottom of the unloading port 4.

[0020] A material receiving box 72 is slidably connected between the two pillars 71 and near the bottom, and the material receiving box 72 is located at the center below the valve 6.

[0021] By adopting the above technical solution, the material receiving box 72 is slidably arranged between the two pillars 71 in order to achieve the effect of shaking the material receiving box 72.

[0022] A sieve plate 1 73 and a sieve plate 2 74 are symmetrically arranged near both sides of the material receiving box 72 . A long shaft 75 is fixedly connected to the center of the bottom end of the material receiving box 72 , and a roller 76 is fixedly connected to the bottom end of the long shaft 75 .

[0023] By adopting the above technical solution, a long axis 75 is provided at the center of the bottom end of the material receiving box 72 in order to provide a roller 76 , thereby achieving the effect of shaking the material receiving box 72 .

[0024] A conveying device 81 is symmetrically fixedly connected to the top of the bottom plate 8 and close to the center, and a bottom cover 82 is fixedly connected to the top of the bottom plate 8 and close to the center.

[0025] By adopting the above technical solution, two conveying devices 81 are provided in order to transport fuels of two different specifications.

[0026] A turntable 84 is rotatably connected to the top of the bottom cover 82 . A plurality of inclined blocks 85 are fixedly connected to the top of the turntable 84 near the center. The inclined blocks 85 are distributed in a ring shape. The inclined blocks 85 cooperate with the roller 76 .

[0027] By adopting the above technical solution, a turntable 84 is arranged on the top of the bottom cover 82 to drive the plurality of inclined blocks 85 to rotate.

[0028] A motor 83 is fixedly connected to the center of the top of the bottom cover 82 , and an output end of the motor 83 passes through the bottom cover 82 and is fixedly connected to the center of the turntable 84 .

[0029] By adopting the above technical solution, the motor 83 is operated so that the fixedly connected turntable 84 rotates above the bottom cover 82 .

[0030] Working principle: When the device is in use, the required materials are first transported to the inside of the compensator 1 through a belt conveyor, and then pass through the dust removal shield 2 below to achieve dust removal of the materials, and then fall on the valve 6. Subsequently, the weight sensor in the valve 6 is used to open and close the valve 6 under the action of the oil pressure device 5, thereby solving the problem of uncontrollable raw material delivery accuracy, which will cause inaccurate raw material ratio;

[0031] At this time, the material will fall into the receiving box 72, and then the motor 83 can be operated to rotate the fixedly connected turntable 84, thereby rotating the fixedly connected inclined blocks 85. At this time, the roller 76 used in conjunction with it will drive the receiving box 72 to shake with the cooperation of the long shaft 75, so that materials of different sizes pass through the sieve plate 1 73 and the sieve plate 2 74 and fall onto the two conveying devices 81, thereby achieving the effect of classifying fuels of different specifications.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automatic weighing and unloading device for a blast furnace, comprising a bottom plate (8), characterized in that: A support (71) is symmetrically fixedly connected to the top of the bottom plate (8) and near the center; a gantry (7) is fixedly connected between the tops of the two support pillars (71); a funnel straight section (3) is fixedly connected to the center of the gantry (7); a dust removal shield (2) is fixedly connected to the top of the funnel straight section (3); a compensator (1) is fixedly connected to the top of the dust removal shield (2); a hydraulic device (5) is fixedly connected to the bottom of the funnel straight section (3); a discharge port (4) is fixedly connected to the bottom of the discharge port (4); and a valve (6) is fixedly connected to the bottom of the discharge port (4).

2. The automatic weighing and unloading device for blast furnace according to claim 1, characterized in that: A material receiving box (72) is slidably connected between the two pillars (71) and close to the bottom, and the material receiving box (72) is located at the center below the valve (6).

3. The automatic weighing and unloading device for blast furnace according to claim 2, characterized in that: A sieve plate 1 (73) and a sieve plate 2 (74) are symmetrically arranged near two sides of the inside of the material receiving box (72). A long shaft (75) is fixedly connected to the center of the bottom end of the material receiving box (72), and a roller (76) is fixedly connected to the bottom end of the long shaft (75).

4. The automatic weighing and unloading device for blast furnace according to claim 1, characterized in that: A conveying device (81) is symmetrically fixedly connected to the top of the bottom plate (8) and close to the center, and a bottom cover (82) is fixedly connected to the top of the bottom plate (8) and close to the center.

5. The automatic weighing and unloading device for blast furnace according to claim 4, characterized in that: The top of the bottom cover (82) is rotatably connected to a turntable (84), and a plurality of inclined blocks (85) are fixedly connected to the top of the turntable (84) near the center, and the plurality of inclined blocks (85) are distributed in a ring shape, and the inclined blocks (85) cooperate with the roller (76).

6. The automatic weighing and unloading device for blast furnace according to claim 4, characterized in that: A motor (83) is fixedly connected at the center of the top end of the bottom cover (82), and an output end of the motor (83) passes through the bottom cover (82) and is fixedly connected to the center of the rotating disk (84).

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