Stokehole feeding equipment for producing refining agent in open-hearth furnace

Abstract

The utility model relates to the technical field of molten steel refining, and particularly discloses stokehole feeding equipment for producing a refining agent in an open-hearth furnace, which comprises a beating mechanism and a quantitative blanking mechanism, the beating mechanism comprises a feeding box, the feeding box is conical, a rotating shaft is arranged in the feeding box, a plurality of beating hammers which are symmetrically distributed in groups are fixedly installed on the outer wall of the circumference of the rotating shaft, the bottom of the feeding box communicates with a discharging barrel, and the bottom of the rotating shaft is fixedly connected with a spiral conveying rod through a coupler; the spiral conveying rod is located in the discharging barrel, the quantitative discharging mechanism comprises a first connecting plate and a second connecting plate located below the first connecting plate, the bottom of the discharging barrel penetrates through the first connecting plate, caked refining agents can be scattered, the caked refining agents are prevented from being caked and accumulated, and the effect of automatically and quantitatively feeding the refining agents is achieved; and the feeding accuracy and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of steel refining technology, and specifically discloses a furnace front feeding device for producing refining agents in an open-hearth furnace. Background Technology

[0002] Refining agents are white powdery or granular fluxes, formulated from a mixture of various dried inorganic salts in a specific ratio. Their main function is to deoxidize, desulfurize, foam, and deeply remove inclusions from molten steel during the refining process, ensuring the obtained steel meets the required purity standards. The main components of steel refining agents are primarily active metallic elements such as silicon, aluminum, barium, and calcium. The production of refining agents, especially sintering refining agents, requires high-temperature calcination or melting in an open-hearth furnace.

[0003] Traditional open-hearth furnace charging equipment for producing refining agents typically uses a oscillating nozzle to push the material at an angle. This allows control of the oscillation angle, causing the refining agent mixture to fall parabolically to different positions in the molten pool, thus dispersing the refining agent. However, during the charging process, there is a lack of effective anti-caking measures, which can easily lead to refining agent accumulation and obstructed feeding. Furthermore, precise feeding is required based on the required metering, but most existing open-hearth furnace charging equipment for producing refining agents cannot perform precise quantitative feeding, which is detrimental to accurate control of the feeding process and affects the quality of steel refining. Utility Model Content

[0004] This utility model proposes a furnace-front feeding device for producing refining agents in open-hearth furnaces. It can break up agglomerated refining agents, prevent them from accumulating, and achieve the effect of automatic quantitative feeding of refining agents, thereby increasing the accuracy of feeding and production efficiency.

[0005] This utility model is implemented as follows: a furnace front feeding device for producing refining agents in an open-hearth furnace, including a scattering mechanism and a quantitative feeding mechanism; the scattering mechanism includes a feeding box, which is conical and has a rotating shaft inside. Multiple symmetrically distributed slapping hammers are fixedly installed on the outer circumference of the rotating shaft. The bottom of the feeding box is connected to a feeding cylinder. The bottom of the rotating shaft is fixedly connected to a screw conveyor rod through a coupling. The screw conveyor rod is located inside the feeding cylinder.

[0006] The quantitative feeding mechanism includes a first connecting plate and a second connecting plate located below the first connecting plate. The bottom of the feeding cylinder passes through the first connecting plate. A rotating seat is slidably connected between the first connecting plate and the second connecting plate. Two distributing holes distributed to the left and right are opened through the upper end surface of the rotating seat.

[0007] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnace according to this utility model, a driving mechanism is provided on the outer side of the rotating seat. The driving mechanism includes a first gear fixedly installed on the outer wall of the rotating seat, a second gear meshing with the outer wall of the first gear, a second motor installed on the upper end face of the second connecting plate, and the output end of the second motor being coaxially and fixedly connected with the second gear.

[0008] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnaces according to this utility model, the bottom of the feeding cylinder is opposite to the position of one of the material distribution holes, and the bottom of the second connecting plate is penetrated and fixedly installed with a feeding pipe corresponding to the position of the other material distribution hole.

[0009] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnaces according to this utility model, sealing gaskets are installed on both the upper and lower end faces of the rotating seat, and sealing grooves that slide in connection with the sealing gaskets are opened on both opposite sides of the first connecting plate and the second connecting plate.

[0010] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnaces according to this utility model, a first motor is fixedly installed on the top of the feeding box, and the output end of the first motor is coaxially and fixedly connected to the rotating shaft.

[0011] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnace according to this utility model, the top of the feeding box is connected to a feeding cylinder, and the top of the feeding cylinder is provided with a top cover.

[0012] As a preferred embodiment of the furnace front feeding device for producing refining agents in open-hearth furnaces according to this utility model, multiple support legs are installed on the outer side wall of the feeding box and the bottom of the second connecting plate.

[0013] The beneficial effects of this utility model are:

[0014] This invention breaks up clumps of refining agent by rotating a rotating shaft, which in turn drives multiple beating hammers to prevent the refining agent from accumulating. During rotation, the rotating shaft also drives a screw conveyor to transport the refining agent to the corresponding dispensing hole. A drive mechanism rotates the rotating seat 180 degrees, moving the dispensing hole containing the refining agent to the discharge pipe, allowing the refining agent to be delivered into the discharge pipe. By using two dispensing holes to alternately dispense the refining agent, a constant amount is ensured each time, thus achieving automatic quantitative dispensing of the refining agent. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 2 This is a structural diagram of the dispersing mechanism of this utility model;

[0018] Figure 3 This is a top view of the rotating seat of this utility model;

[0019] Figure 4 This is a partial structural diagram of the rotating seat of this utility model.

[0020] The markings in the diagram are as follows: 1. Feed box; 101. Feed cylinder; 2. Rotating shaft; 201. First motor; 202. Beating hammer; 203. Coupling; 3. Discharge cylinder; 301. Screw conveyor rod; 4. First connecting plate; 5. Second connecting plate; 501. Discharge pipe; 6. Rotating seat; 601. Distributing hole; 602. Sealing gasket; 7. First gear; 701. Second gear; 702. Second motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-4 A furnace front feeding device for producing refining agents in an open-hearth furnace includes a scattering mechanism and a quantitative feeding mechanism. The scattering mechanism includes a feeding box 1, which is conical and has a rotating shaft 2 inside. Multiple symmetrically distributed slapping hammers 202 are fixedly installed on the outer circumference of the rotating shaft 2. The bottom of the feeding box 1 is connected to a feeding cylinder 3. The bottom of the rotating shaft 2 is fixedly connected to a screw conveyor 301 through a coupling 203. The screw conveyor 301 is located inside the feeding cylinder 3.

[0023] The quantitative feeding mechanism includes a first connecting plate 4 and a second connecting plate 5 located below the first connecting plate 4. The bottom of the feeding cylinder 3 passes through the first connecting plate 4. A rotating seat 6 is slidably connected between the first connecting plate 4 and the second connecting plate 5. Two distributing holes 601 distributed to the left and right are opened through the upper end face of the rotating seat 6.

[0024] In this embodiment: the refining agent is added into the feed box 1, and the first motor 201 is started by the PLC controller, so that the rotating shaft 2 rotates and drives multiple hammers 202 to rotate, which can break up the clumps of refining agent and prevent the refining agent from accumulating. During the rotation of the rotating shaft 2, the screw conveyor 301 can be rotated to transport the refining agent, which is convenient to transport the refining agent to the corresponding distribution hole 601. When it is necessary to add refining agent into the open hearth furnace, the second motor 702 is started, so that the second gear 701 rotates and drives the first gear 7 and the rotating seat 6 to rotate 180 degrees, so that the distribution hole 601 containing the refining agent moves to the feeding pipe 501, and the refining agent can be transported into the feeding pipe 501. By using two distribution holes 601 to feed alternately, it is ensured that the amount of material fed each time is constant, thereby achieving the quantitative addition of refining agent into the open hearth furnace.

[0025] As a technical optimization of this utility model, a driving mechanism is provided on the outer side of the rotating seat 6. The driving mechanism includes a first gear 7 fixedly installed on the outer side wall of the rotating seat 6, a second gear 701 meshing with the outer side wall of the first gear 7, and a second motor 702 installed on the upper end face of the second connecting plate 5. The output end of the second motor 702 is coaxially and fixedly connected with the second gear 701.

[0026] In this embodiment: the second motor 702 is a worm gear motor with a self-locking function. By starting the second motor 702, the second gear 701 can be driven to rotate, and the rotation of the second gear 701 can drive the first gear 7 and the rotating seat 6 to rotate.

[0027] As a technical optimization of this utility model, the bottom of the feeding cylinder 3 is opposite to the position of one of the distributing holes 601, and the bottom of the second connecting plate 5 is through and fixedly installed with a feeding pipe 501 corresponding to the position of the other distributing hole 601.

[0028] In this embodiment: by setting the positions of the feeding cylinder 3 and the feeding pipe 501 to correspond to the positions of the two distributing holes 601 respectively, the feeding cylinder 3 can transport the refining agent to the corresponding distributing hole 601. When the distributing hole 601 containing the refining agent moves to the feeding pipe 501, the refining agent can be transported into the feeding pipe 501.

[0029] As a technical optimization of this utility model, sealing gaskets 602 are installed on both the upper and lower end faces of the rotating seat 6, and sealing grooves that slide in connection with the sealing gaskets 602 are opened on both sides of the first connecting plate 4 and the second connecting plate 5.

[0030] In this embodiment: by setting a sealing gasket 602, the sealing performance between the first connecting plate 4, the second connecting plate 5 and the rotating seat 6 can be increased.

[0031] As a technical optimization of this utility model, a first motor 201 is fixedly installed on the top of the feed box 1, and the output end of the first motor 201 is coaxially and fixedly connected to the rotating shaft 2.

[0032] In this embodiment: by starting the first motor 201, the rotating shaft 2 can be driven to rotate.

[0033] As a technical optimization of this utility model, the top of the feeding box 1 is connected to the feeding cylinder 101, and the top of the feeding cylinder 101 is provided with a top cover.

[0034] In this embodiment: by setting up a feed cylinder 101, it is convenient to add the refining agent into the feed box 1.

[0035] As a technical optimization of this utility model, multiple support legs are installed on the outer wall of the feed box 1 and the bottom of the second connecting plate 5.

[0036] In this embodiment, multiple support legs can be provided to support the feed box 1 and the second connecting plate 5.

[0037] The working principle and usage process of this utility model are as follows: First, the device is installed on the feeding rack above the open-hearth furnace, and the bottom of the feeding pipe 501 is connected to the feeding port of the open-hearth furnace. When using the device, it is connected to an external PLC controller. Then, the feeding cylinder 101 is opened through the top cover, and the refining agent is added into the inside of the feeding box 1. At the same time, the first motor 201 is started through the PLC controller, so that the rotating shaft 2 rotates and drives multiple hammers 202 to rotate, which can break up the clumps of refining agent. During the rotation of the rotating shaft 2, the screw conveyor 301 can be driven to rotate and transport the refining agent to the corresponding dispensing hole. Inside 601, when it is necessary to add refining agent into the open-hearth furnace, the second motor 702 is started, causing the second gear 701 to rotate, which in turn drives the first gear 7 and the rotating seat 6 to rotate 180 degrees. This moves the material distribution hole 601 containing the refining agent to the feeding pipe 501, allowing the refining agent to be transported into the feeding pipe 501. This achieves the quantitative addition of the refining agent into the open-hearth furnace. The size of the material distribution hole 601 can be designed according to production needs, so that a quantitative amount of refining agent can be added each time according to the production volume of the open-hearth furnace. When it is necessary to add refining agent into the open-hearth furnace again, the above process can be repeated, so that the two material distribution holes 601 can add refining agent alternately.

[0038] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A hearth feeding apparatus for a cupola for producing a refining agent, characterized by: It includes a scattering mechanism and a quantitative feeding mechanism; the scattering mechanism includes a feeding box (1), the feeding box (1) is conical and has a rotating shaft (2) inside, the rotating shaft (2) has multiple symmetrically distributed slapping hammers (202) fixedly installed on the outer circumference of the rotating shaft (2), the bottom of the feeding box (1) is connected to a feeding cylinder (3), the bottom of the rotating shaft (2) is fixedly connected to a spiral conveying rod (301) through a coupling (203), and the spiral conveying rod (301) is located inside the feeding cylinder (3); The quantitative feeding mechanism includes a first connecting plate (4) and a second connecting plate (5) located below the first connecting plate (4). The bottom of the feeding cylinder (3) passes through the first connecting plate (4). A rotating seat (6) is slidably connected between the first connecting plate (4) and the second connecting plate (5). Two distributing holes (601) are opened through the upper end face of the rotating seat (6) and distributed to the left and right.

2. A hearth feeding device for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: A driving mechanism is provided on the outer side of the rotating seat (6). The driving mechanism includes a first gear (7) fixedly installed on the outer wall of the rotating seat (6). A second gear (701) is meshed with the outer wall of the first gear (7). A second motor (702) is installed on the upper end face of the second connecting plate (5). The output end of the second motor (702) is coaxially fixedly connected to the second gear (701).

3. A hearth feeding device for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: The bottom of the feed cylinder (3) is opposite to one of the feed holes (601), and the bottom of the second connecting plate (5) is connected and fixedly installed with a feed pipe (501) corresponding to the position of the other feed hole (601).

4. A hearth feeding device for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: Sealing gaskets (602) are installed on both the upper and lower end faces of the rotating seat (6), and sealing grooves that slide in connection with the sealing gaskets (602) are opened on both sides of the first connecting plate (4) and the second connecting plate (5).

5. A hearth feeding apparatus for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: The top of the feed box (1) is fixedly installed with a first motor (201), and the output end of the first motor (201) is coaxially fixedly connected to the rotating shaft (2).

6. A hearth feeding apparatus for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: The top of the feed box (1) is connected to the feed cylinder (101), and the top of the feed cylinder (101) is provided with a top cover.

7. A hearth feeding apparatus for the production of a refining agent in a hearth furnace according to claim 1, characterized in that: Multiple support legs are installed on the outer wall of the feed box (1) and the bottom of the second connecting plate (5).

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