Steel-making slagging material and alloy material conveying device

Abstract

The utility model relates to material conveying equipment of a steel plant, in particular to a steelmaking slagging material and alloy material conveying device. The problem that the quality of molten steel cannot reach an index value due to the fact that accurate feeding cannot be achieved in existing steelmaking slagging material and alloy material conveying production is solved. Comprising a horizontal belt line, a lifting belt line with the starting end communicated with the tail end of the horizontal belt line, a gathering hopper and a discharging pipeline, and the tail end of the lifting belt line is located above the gathering hopper and used for feeding of the gathering hopper. Quantitative feeding devices, namely an alloy material feeding device and a slagging material feeding device, are arranged on the two sides of the initial end of the horizontal belt line respectively; the two quantitative feeding devices are the same in structure, and each quantitative feeding device comprises a receiving hopper, a storage tank and a quantitative device; the receiving hopper is used for receiving materials, an outlet in the tail end of the receiving hopper is communicated with an inlet of the storage tank, and an outlet of the storage tank is located above the quantifying device.

Description

Technical Field

[0001] The utility model relates to material conveying equipment for a steelmaking plant, in particular to a conveying device for steelmaking slag material and alloy material. Background Art

[0002] In the steelmaking process, especially in the oxygen top-blown converter steelmaking process, slag-making materials and alloy materials are both very important. Among them, slag-making materials are mainly used for desulfurization and dephosphorization, control of slag basicity, insulation and covering, and control of reaction atmosphere, while alloy materials are used to adjust chemical composition, deoxidation and inclusion control, grain refinement, and improvement of physical properties. Therefore, the precise and quantitative use of slag-making materials and alloy materials plays a decisive role in ensuring the quality of molten steel, optimizing the production process, and improving the performance of steel.

[0003] At present, slag materials and alloy materials for steelmaking converters are transported to the converter operation area by car and unloaded into the low-level bin of the bulk material room outside the main plant. At regular intervals, belt conveyors are used to transport various slag materials from the low-level bin to the high-level bin above the converter. During this feeding process, the quality of the transported materials depends entirely on the workers' operating experience, and the purpose of quantitative feeding cannot be achieved, resulting in the inability to guarantee the quality of molten steel.

[0004] Therefore, it is necessary to design a device that can accurately feed materials. At the same time, this device is required to be simple to maintain and operate, reliable in operation, and able to accurately control the amount of each material added. Summary of the invention

[0005] The utility model aims at the defects of the prior art and provides a conveying device for steelmaking slag material and alloy material.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, including a horizontal belt line, a lifting belt line whose starting end is connected to the end of the horizontal belt line, a collecting hopper, and a unloading pipe. The end of the lifting belt line is located above the collecting hopper and is used for feeding the collecting hopper; the top of the unloading pipe is connected to the bottom of the collecting hopper, and the bottom of the unloading pipe extends into the smoke hood above the converter and is used for unloading the converter.

[0007] A certain amount of feeding devices are respectively arranged on both sides of the starting end of the horizontal belt line: an alloy material feeding device and a slag material feeding device.

[0008] The two quantitative feeding devices have the same structure, and both include: a receiving hopper, a storage tank, and a quantitative device; the receiving hopper is used to receive materials, and the terminal outlet of the receiving hopper is connected to the inlet of the storage tank (and the height of the starting inlet of the receiving hopper is higher than the height of the storage tank, which is convenient for the material to enter through the starting inlet of the receiving hopper and then slide into the storage tank;) the outlet of the storage tank is located above the quantitative device.

[0009] The quantitative device includes a feed pipe located below the storage tank outlet for receiving the material in the storage tank, and a quantitative bin located below the feed pipe; the quantitative bin is vertically arranged, and two gate valves are arranged on the quantitative bin: an upper gate valve (located above) and a lower gate valve (located below); two limit sensors are arranged on the side wall of the quantitative bin and between the upper and lower gate valves: an upper limit sensor (located above) and a lower limit sensor (located below).

[0010] The upper plug valve is an upper material stopper for quantitative feeding, and the lower plug valve is a lower material stopper for quantitative feeding. The upper limit sensor is used to detect whether the quantitative bin is full of materials, and the lower limit sensor is used to detect whether the quantitative bin is empty of materials.

[0011] Furthermore, a discharge pipe is provided at the bottom of the quantitative bin, and the discharge pipe is an inclined pipe that is convenient for discharge.

[0012] Furthermore, a second vibrator is provided on the wall of the inclined tube.

[0013] Furthermore, the storage tank is covered with a discharge cover, and a discharge port for discharging is reserved at the bottom of the discharge cover; the discharge port at the bottom of the discharge cover is located at the top of the discharge pipe and is connected to the discharge pipe.

[0014] Furthermore, a vibrator is provided at the bottom of the receiving hopper to make material discharge smoother.

[0015] Furthermore, the storage tank is a stirring tank for storing and conveying materials.

[0016] Furthermore, the storage tank is a horizontal stirring tank, and the storage tank and the receiving hopper are both mounted and fixed on the same bracket.

[0017] Furthermore, the two quantitative feeding devices are arranged in a mirror image relative to the horizontal belt line.

[0018] Furthermore, the horizontal belt line adopts a V-shaped conveyor line.

[0019] Furthermore, the quantitative feeding device is equipped with a lifting forklift for loading the material bags thereto.

[0020] Compared with the prior art, the utility model has beneficial effects.

[0021] The utility model solves the problem that the quality of molten steel cannot reach the target value due to the inability to accurately feed the existing steelmaking slag and alloy materials in the production process. In addition, the technical solution can achieve the purpose of separate and accurate feeding of slag and alloy materials by adding two sets of quantitative feeding devices on the conveying line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.

[0023] Figure 1 It is a front view of the steelmaking slag material and alloy material conveying device in the embodiment.

[0024] Figure 2 It is a FF view of the steelmaking slag material and alloy material conveying device in the embodiment.

[0025] Figure 3 It is an enlarged view of the quantitative device of the steelmaking slag material and alloy material conveying device in the embodiment.

[0026] Figure 4 yes Figure 1 A partial enlargement of Figure 1 .

[0027] Figure 5 yes Figure 1 A partial enlargement of Figure 2 .

[0028] Figure 6 It is a view from the FF direction of two quantitative feeding devices.

[0029] In the figure, 1 is a converter, 2 is a smoke hood, 3 is a material discharge pipe, 4 is a collection hopper, 5 is a lifting belt line, 6 is a horizontal belt line, 7 is a quantitative feeding device, 8 is an alloy material bag, 9 is a slag material bag, and 10 is a lifting forklift;

[0030] 701 is a bracket, 702 is a storage tank, 703 is a discharge cover, 704 is a receiving hopper, 705 is a vibrator 1, and 706 is a quantitative device;

[0031] 7061 is a feed pipe, 7062 is an upper limit sensor, 7063 is a lower limit sensor, 7064 is a discharge pipe, 7065 is a second vibrator, 7066 is a lower plug valve, 7067 is an upper plug valve, and 7068 is a quantitative bin. DETAILED DESCRIPTION

[0032] In order to better understand the technical solution of the present utility model, a specific implementation plan is provided as follows; and the following scheme is only for illustration.

[0033] like Figure 1-6As shown, the conveying device for steelmaking slag material and alloy material includes a horizontal belt line 6, a lifting belt line 5 whose starting end is connected to the end of the horizontal belt line 6, a collecting hopper 4, and a material discharge pipe 3. The end of the lifting belt line 5 is located above the collecting hopper 4 and is used to feed the collecting hopper 4; the top of the material discharge pipe 3 is connected to the bottom of the collecting hopper 4, and the bottom of the material discharge pipe 3 extends into the smoke hood 2 above the converter 1, which is used to discharge the converter 1. A certain amount of feeding devices are respectively arranged on both sides of the starting end of the horizontal belt line 6: an alloy material feeding device and a slag material feeding device. The two quantitative feeding devices are arranged in a mirror image relative to the horizontal belt line 6. The horizontal belt line 6 adopts a V-shaped conveyor line. The quantitative feeding device is equipped with a lifting forklift 10 for loading materials for it, which is used for loading material bags.

[0034] Specifically, the two quantitative feeding devices have the same structure, both including: a receiving hopper 704, a storage tank 702, and a quantitative device 706; the receiving hopper 704 is used to receive materials, and the terminal outlet of the receiving hopper 704 is connected to the inlet of the storage tank 702, and the height of the starting inlet of the receiving hopper 704 is higher than the height of the storage tank 702, so that the material can enter through the starting inlet of the receiving hopper 704 and then slide into the storage tank 702; the outlet of the storage tank 702 is located above the quantitative device 706.

[0035] The quantitative device 706 includes a feed pipe located below the outlet of the storage tank 702 for receiving the material of the storage tank 702, and a quantitative bin 7068 located below the feed pipe; the quantitative bin 7068 is vertically arranged, and two gate valves are arranged on the quantitative bin 7068: an upper gate valve 7067 located above and a lower gate valve 7066 located below; two limit sensors are arranged on the side wall of the quantitative bin 7068 and between the upper and lower gate valves: an upper limit sensor 7062 located above and a lower limit sensor 7063 located below. Among them, the upper gate valve 7067 is an upper material stop gate for quantitative feeding, and the lower gate valve 7066 is a lower material stop gate for quantitative feeding. The upper limit sensor 7062 is used to detect whether the material in the quantitative bin 7068 is full, and the lower limit sensor 7063 is used to detect whether the material in the quantitative bin 7068 is empty.

[0036] The specific working process is:

[0037] A. When the material reaches the quantitative bin 7068 through the discharge pipe (the lower plug valve 7066 is in the quantitative bin 7068 state), the material fills the quantitative bin 7068. At this time, the upper limit sensor 7062 sends a signal to indicate that the quantitative bin 7068 is full, and the upper plug valve 7067 is actuated to close the upper opening of the quantitative bin 7068.

[0038] B. Open the lower gate valve 7066 again, and the material flows out from the lower opening of the quantitative bin 7068. When the lower limit sensor 7063 gives a signal (i.e., the material cannot detect a signal), it means that all the materials in the quantitative bin 7068 have flowed out. At this time, the lower gate valve 7066 is controlled to close the lower opening of the quantitative bin 7068, completing a quantitative feeding action.

[0039] Embodiment 1: A discharge pipe is provided at the bottom of the quantitative bin 7068, and the discharge pipe is an inclined pipe for easy material discharge. A vibrator 7065 is provided on the wall of the inclined pipe. This serves to smoothly feed the material into the belt line, prevent the material from sticking to the discharge pipe, and help the quantitative bin 7068 to discharge the material more smoothly, thereby improving the discharge efficiency.

[0040] Embodiment 2: The storage tank 702 is covered with a discharge cover 703 to prevent the slag from overflowing and to prevent dust. A discharge port is left at the bottom of the discharge cover 703 for easy discharge. The discharge port at the bottom of the discharge cover 703 is located at the top of the discharge pipe and is connected to the discharge pipe.

[0041] Preferably, a vibrator 705 is provided at the bottom of the receiving hopper 704 to make the material discharge smoother, specifically to ensure that the material flows smoothly into the storage tank 702 and prevent the alloy material or slag material from sticking to the inner wall of the receiving hopper 704.

[0042] Embodiment 3: The storage tank 702 is a mixing tank for storing and conveying materials. The storage tank 702 is a horizontal storage tank, and the storage tank 702 and the receiving hopper 704 are both mounted and fixed on the same bracket 701. The bracket 701 can better maintain stability, and the bracket 701 is not limited to a specific structure.

[0043] Working process and working principle description:

[0044] 1. Manually load the slag material and alloy material for steelmaking into the receiving hopper 704 through an overhead crane or a lifting forklift 10. Start the vibrator 705 so that the material can flow quickly into the storage tank 702. When the material in the storage tank 702 is stored to a certain amount, it is ready.

[0045] 2. When it is necessary to feed the converter 1, the storage tank 702 is started to rotate (a spiral device is provided in the storage tank 702, which can make the material in the storage tank 702 flow out from the left discharge port to the discharge pipe when the storage tank 702 rotates in one direction). The material output is completed.

[0046] 3. When the material reaches the quantitative bin 7068 through the discharge pipe (the lower plug valve 7066 closes the lower opening of the quantitative bin 7068 at this time), the material gradually fills the quantitative bin 7068. At this time, the upper limit sensor 7062 sends a signal to confirm that the quantitative bin 7068 is full, and the upper plug valve 7067 is actuated to close the upper opening of the quantitative bin 7068. At this time, the amount of material in the quantitative bin 7068 is quantitative.

[0047] 4. At this time, open the lower plug valve 7066, and the material flows out from the lower opening of the quantitative bin 7068. When the lower limit sensor 7063 gives a signal (the material cannot detect a signal), it means that all the materials in the quantitative bin 7068 have flowed out. At this time, control the lower plug valve 7066 to close the lower opening of the quantitative bin 7068, and complete a quantitative feeding action. The above action cycle can achieve the purpose of multiple quantitative feeding.

[0048] 5. The material flowing out from the discharge port falls onto the horizontal belt line 6, then enters the collecting hopper 4 through the lifting belt line 5, and then enters the converter 1 through the discharge pipe 3, thereby completing the purpose of feeding the converter 1.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Therefore, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope defined by the claims of the present invention.

Claims

1. A conveying device for steelmaking slag and alloy materials, comprising a horizontal belt line, a lifting belt line whose starting end is connected to the end of the horizontal belt line, a collecting hopper, and a material discharge pipe, wherein the end of the lifting belt line is located above the collecting hopper and is used for feeding the collecting hopper; the top of the material discharge pipe is connected to the bottom of the collecting hopper, and the bottom of the material discharge pipe extends into the smoke hood above the converter and is used for discharging the converter; Features: A certain amount of feeding devices are provided on both sides of the starting end of the horizontal belt line: an alloy material feeding device and a slag material feeding device; The two quantitative feeding devices have the same structure, both of which include: a receiving hopper, a storage tank, and a quantitative device; The receiving hopper is used to receive materials, and the terminal outlet of the receiving hopper is connected to the inlet of the storage tank, and the outlet of the storage tank is located above the quantitative device; The quantitative device includes a feed pipe located below the storage tank outlet for receiving the material in the storage tank, and a quantitative bin located below the feed pipe; the quantitative bin is vertically arranged, and two gate valves are arranged on the quantitative bin: an upper gate valve and a lower gate valve; two limit sensors are arranged on the side wall of the quantitative bin and between the upper and lower gate valves: an upper limit sensor and a lower limit sensor.

2. A steelmaking slag material and alloy material conveying device according to claim 1, characterized in that: A discharge pipe is provided at the bottom of the quantitative bin, and the discharge pipe is an inclined pipe that is convenient for discharging materials.

3. A steelmaking slag material and alloy material conveying device according to claim 2, characterized in that: The tube wall of the inclined tube is provided with a second vibrator.

4. A steelmaking slag material and alloy material conveying device according to any one of claims 1 or 2, characterized in that: The storage tank is covered with a discharge cover, and a discharge port for discharging materials is reserved at the bottom of the discharge cover; the discharge port at the bottom of the discharge cover is located at the top of the discharge pipe and is connected with the discharge pipe.

5. A steelmaking slag material and alloy material conveying device according to any one of claims 1 or 2, characterized in that: A vibrator 1 is arranged at the bottom of the receiving hopper.

6. A steelmaking slag material and alloy material conveying device according to any one of claims 1 or 2, characterized in that: The storage tank is a stirring tank.

7. A steelmaking slag material and alloy material conveying device according to claim 6, characterized in that: The storage tank is a horizontal stirring tank, and the storage tank and the receiving hopper are both installed and fixed on the same bracket.

8. The device for conveying slag and alloy materials for steelmaking according to claim 1, characterized in that: The two quantitative feeding devices are arranged in mirror image with respect to the horizontal belt line.

9. A steelmaking slag material and alloy material conveying device according to any one of claims 1 or 2, characterized in that: The horizontal belt line adopts a V-shaped conveyor line.

10. The device for conveying slag and alloy materials for steelmaking according to claim 1, characterized in that: The quantitative feeding device is equipped with a lifting forklift for feeding the material bags.

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