An automatic cover-opening vertical steelmaking furnace

Abstract

The present invention discloses an automatic open-top vertical steelmaking furnace, which includes a bracket, on which a furnace body is installed. A furnace cover is installed on the top of the furnace body. A support mechanism is installed on one side of the furnace body, and the support mechanism is movably connected to the furnace cover. A flipping drive mechanism is installed on the support mechanism, and the flipping drive mechanism is used to drive the furnace cover away from the upper edge of the furnace body. A blocking device is installed on the inner side of the furnace cover corresponding to the upper edge, and the blocking device is used to block the molten slag on the furnace cover from falling on the upper edge. Specifically, it relates to the field of steelmaking furnaces. By making the furnace cover move away from the upper edge of the furnace body in a parallel state, the "liquefied" molten slag attached to the furnace cover drips vertically downward, which can prevent the "liquefied" molten slag attached to the furnace cover from flowing to the upper edge, thereby preventing the "liquefied" molten slag from "solidifying" on the upper edge after cooling, solving the problem that the "solidified" molten slag hinders the perfect closing of the furnace cover and preventing gaps from appearing at the upper edge, resulting in incomplete closure of the furnace cover.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking furnaces, and more specifically, to an automatic cover-opening vertical steelmaking furnace. Background Art

[0002] A steelmaking furnace is an important device in the iron and steel industry for converting molten iron into steel. Through a series of chemical reactions and physical treatment processes, impurities (such as carbon, sulfur, phosphorus, etc.) in the molten iron are removed, and its chemical composition is adjusted to finally obtain molten steel meeting specific standard requirements.

[0003] In small and medium-sized steel mills, scrap steel is melted and alloyed by an electric arc furnace. The specific principle is that the electric arc furnace heats the scrap steel through the arc generated by the electrodes to melt it into molten steel.

[0004] The electric arc furnace mainly consists of a furnace body, a furnace cover, and an electrode system. Among them, the furnace body is the core part, and the furnace body can be fixed or designed to be tiltable to facilitate feeding and tapping.

[0005] The furnace cover is usually designed to be automatically opened and closed to facilitate the addition of raw materials and the observation of the furnace interior. The prior art uses a special mechanical driving device to achieve the automatic flipping of the furnace cover to one side. After tilting the furnace body, it is convenient to pour out the molten steel from the open side on the other side of the furnace cover.

[0006] During the steelmaking process, molten slag (composed of molten slag and the liquid attached to its surface) will be generated. Due to the action of the electric arc and the melting process of the metal material, the "liquefied" molten slag will splash and adhere to the inner side of the furnace cover in a "boiling" state. When the furnace cover is not opened, the "liquefied" molten slag is in a "flowable" state at high temperature. After the furnace cover is opened, since the furnace cover is tilted relative to its connection surface on the furnace body, the "liquefied" molten slag "flows" along the tilted direction, causing the "liquefied" molten slag to flow to the upper edge of the furnace body. Since the temperature of the upper edge of the furnace body is relatively lower than that inside the furnace body, the "liquefied" molten slag "solidifies" on the upper edge of the furnace body. Subsequently, when the furnace cover is closed, it will be hindered by the "solidified" molten slag and have a notch, resulting in incomplete closure of the furnace cover, thus causing the phenomenon of "slag spraying" outside the furnace body. Summary of the Invention

[0007] An automatic cover-opening vertical steelmaking furnace provided by the present invention aims to solve the problem that in the existing automatic cover-opening vertical steelmaking furnace, after the furnace cover is opened, the "liquefied" molten slag "flows" along the tilted direction to the upper edge of the furnace body, resulting in the "liquefied" molten slag "solidifying" on the upper edge of the furnace body.

[0008] To achieve the above object, the present invention provides the following technical solution: An automatic cover-opening vertical steelmaking furnace, comprising a bracket, on which a furnace body is installed, a furnace cover is installed on the top of the furnace body, a support mechanism is installed on one side of the furnace body, and the support mechanism is movably connected to the furnace cover. A flipping drive mechanism is installed on the support mechanism, and the flipping drive mechanism is used to drive the furnace cover away from the upper edge of the furnace body; A blocking device is installed on the inner side of the furnace cover corresponding to the upper edge, and the blocking device is used to block the molten slag on the furnace cover from falling on the upper edge.

[0009] In a preferred embodiment, the support mechanism is a first support seat, the top of the first support seat protrudes above the furnace cover, an adjustment opening is provided on the first support seat, and a first end seat is fixedly provided at one end of the furnace cover corresponding to the first support seat. The flipping drive mechanism is a second linear driver, and the output end of the second linear driver penetrates inside the adjustment opening, and the second linear driver drives the furnace cover to move vertically along the axis of the furnace body through the first end seat.

[0010] In a preferred embodiment, a linkage plate is rotatably connected between the first end seat and the second linear driver. One side of the first end seat away from the furnace cover is open, and the other side is closed.

[0011] In a preferred embodiment, adjustment grooves are provided on both sides of the adjustment opening, and the adjustment grooves are provided on the first support seat. Connecting shafts are fixedly provided on both sides of the first end seat, and the connecting shafts are slidably arranged inside the adjustment grooves.

[0012] In a preferred embodiment, the blocking device is a diversion mechanism, and the diversion mechanism includes a bending assembly, and the bending assembly is arranged on the furnace cover. The bending assembly includes an elastic plate, and the elastic plate is movably arranged at the bottom of the inner seat. Two ends of the elastic plate are respectively fixedly connected with a movable block and a fixed seat, and the movable block is slidably arranged inside the furnace cover, and the fixed seat is fixedly arranged at one end inside the furnace cover. A fourth linear driver is installed at one end inside the furnace cover close to the movable block, and the output end of the fourth linear driver is fixedly connected with the movable block.

[0013] In a preferred embodiment, a pressing-down assembly is provided between the movable block and the fixed seat. The pressing-down assembly includes two groups of driving rods, and the two groups of driving rods are respectively rotatably connected with the movable block and the fixed seat. A pressing-down rod is rotatably connected between the two groups of driving rods. A transverse groove is provided inside the inner seat, and the pressing-down rod penetrates inside the transverse groove. One end of the pressing-down rod is rotatably connected with a pressing-down wheel, and the pressing-down wheel is arranged on the inner side of the arc top of the elastic plate close to the inner seat.

[0014] The beneficial effects of the present invention are as follows:

[0015] The present invention drives the furnace cover to lift upward through the linear driver II, so that the furnace cover moves away from the upper edge of the furnace body in a parallel state. Since the diameter of the inner seat of the furnace cover is smaller than the diameter of the upper edge, the "liquefied" molten slag attached to the furnace cover drips vertically downward, which can prevent the "liquefied" molten slag attached to the furnace cover from flowing to the upper edge, thereby preventing the "liquefied" molten slag from "solidifying" on the upper edge after cooling, solving the problem that the "solidified" molten slag hinders the perfect closing of the furnace cover and preventing gaps from appearing at the upper edge, resulting in incomplete closing of the furnace cover.

[0016] The present invention first lifts the furnace cover vertically upward and then flips the furnace cover to one side. During this process, the "liquefied" molten slag drips downward first. When flipping, since the height of the inner seat is increased, the lowest point after flipping is aligned with the inside of the furnace body, that is, the lowest point of the inner seat after flipping is misaligned with the upper edge, achieving the effect that the "liquefied" molten slag cannot drip on the upper edge and preventing the "liquefied" molten slag from "solidifying" on the upper edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the bracket of the present invention.

[0018] Figure 2 It is a schematic front structural diagram of the whole of the present invention.

[0019] Figure 3 It is a schematic side structural diagram of the whole of the present invention.

[0020] Figure 4 It is a schematic diagram of the closing of the furnace cover of the present invention.

[0021] Figure 5 It is a schematic diagram of the opening of the furnace cover of the present invention.

[0022] Figure 6 It is a schematic sectional structural diagram of the furnace cover of the present invention.

[0023] Figure 7 It is a schematic side structural diagram of one end seat of the present invention.

[0024] Reference numerals are: 1, bracket; 2, furnace body; 21, upper edge; 3, furnace cover; 31, inner seat; 311, transverse groove; 32, first end seat; 321, linkage plate; 322, connecting shaft; 4, support mechanism; 41, first support seat; 411, adjustment opening; 412, adjustment groove; 5, flipping drive mechanism; 51, linear driver II; 6, tilting drive mechanism; 7, diversion mechanism; 71, bending assembly; 711, elastic plate; 712, movable block; 713, fixed seat; 714, linear driver IV; 72, pressing-down assembly; 721, driving rod; 722, pressing-down rod; 723, pressing-down wheel. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Embodiment

[0026] Referring to the attached drawings of the specification Figures 1 to 6 , an automatic open-top vertical steelmaking furnace includes a bracket 1, a furnace body 2 is installed on the bracket 1, a furnace cover 3 is installed on the top of the furnace body 2, a support mechanism 4 is installed on one side of the furnace body 2, and the support mechanism 4 is movably connected to the furnace cover 3. A flipping drive mechanism 5 is installed on the support mechanism 4, and the flipping drive mechanism 5 is used to drive the furnace cover 3 away from the upper edge 21 of the furnace body 2; a blocking device is installed inside the furnace cover 3 corresponding to the upper edge 21, and the blocking device is used to block the molten slag on the furnace cover 3 from falling on the upper edge 21.

[0027] It should be noted that the support mechanism 4 is fixed on the outside of the furnace body 2, the flipping drive mechanism 5 is fixed on the support mechanism 4, the blocking device is arranged between the furnace cover 3 and the molten steel inside the furnace body 2, and the blocking device does not contact the molten steel. The tilting drive mechanism 6 is used to drive the furnace body 2 to tilt and pour out the molten steel.

[0028] Furthermore, the support mechanism 4 is a first support base 41, the top of the first support base 41 protrudes above the furnace cover 3, an adjustment opening 411 is provided on the first support base 41, one end of the furnace cover 3 corresponding to the first support base 41 is fixedly provided with a first end seat 32, the flipping drive mechanism 5 is a second linear driver 51, and the output end of the second linear driver 51 penetrates inside the adjustment opening 411. The second linear driver 51 drives the furnace cover 3 to move vertically along the axis of the furnace body 2 through the first end seat 32.

[0029] It should be noted that in this embodiment, the output end of the second linear driver 51 is fixed to the first end seat 32, and the second linear driver 51 drives the entire furnace cover 3 to move up and down.

[0030] In this embodiment, the implementation scenario is specifically as follows: The second linear driver 51 drives the furnace cover 3 to lift upward, so that the furnace cover 3 moves away from the upper edge 21 of the furnace body 2 in a parallel state. Since the diameter of the inner seat 31 of the furnace cover 3 is smaller than the diameter of the upper edge 21, the "liquefied" molten slag attached to the furnace cover 3 drips vertically downward, which can avoid the "liquefied" molten slag attached to the furnace cover 3 flowing to the upper edge 21, thereby preventing the "liquefied" molten slag from "solidifying" on the upper edge 21 after cooling, solving the problem that the "solidified" molten slag hinders the perfect closing of the furnace cover 3 and preventing gaps from appearing at the upper edge 21 and the furnace cover 3 from being incompletely closed. Embodiment

[0031] Referring to the attached drawings of the specification Figure 6 andFigure 7 , there is a linkage plate 321 rotatably connected between the first end seat 32 and the second linear driver 51. One side of the first end seat 32 away from the furnace cover 3 is open, and the other side of the first end seat 32 is closed.

[0032] Furthermore, adjustment grooves 412 are provided on both sides of the adjustment opening 411, and the adjustment grooves 412 are formed on the first support seat 41. Connecting shafts 322 are fixedly provided on both sides of the first end seat 32, and the connecting shafts 322 are slidably arranged inside the adjustment grooves 412.

[0033] It should be noted that the connecting shaft 322 is located on the side of the linkage plate 321 away from the furnace cover 3, and the connecting shaft 322 slides up and down inside the corresponding adjustment groove 412 to play a guiding role.

[0034] In this embodiment, the implementation scenario is specifically as follows: when the second linear driver 51 jacks up the first end seat 32, under the support of the closed side of the first end seat 32, the furnace cover 3 can be lifted while maintaining a horizontal state. When the connecting shaft 322 reaches the uppermost part of the adjustment groove 412, continue to lift the first end seat 32 to make it flip around the connecting shaft 322, so that the furnace cover 3 flips to the side of the first support seat 41, that is, first lift the furnace cover 3 vertically upward, and then flip the furnace cover 3 to one side. During this process, the "liquefied" molten slag drips downward in the same way as in the first embodiment. When flipping, since the height of the inner seat 31 has increased, the lowest point after flipping is aligned with the inside of the furnace body 2, that is, the lowest point of the inner seat 31 after flipping is misaligned with the upper edge 21, achieving the effect that the "liquefied" molten slag cannot drip on the upper edge 21 and avoiding the "liquefied" molten slag from "solidifying" on the upper edge 21. Embodiment

[0035] Refer to the attached instructions Figures 4 to 6 , the blocking device is a diversion mechanism 7. The diversion mechanism 7 includes a bending component 71, and the bending component 71 is arranged on the furnace cover 3. The bending component 71 includes an elastic plate 711. The elastic plate 711 is movably arranged at the bottom of the inner seat 31. Two ends of the elastic plate 711 are respectively fixedly connected with a movable block 712 and a fixed seat 713. The movable block 712 is slidably arranged inside the furnace cover 3, and the fixed seat 713 is fixedly arranged at one end inside the furnace cover 3. A fourth linear driver 714 is installed at one end of the furnace cover 3 close to the movable block 712, and the output end of the fourth linear driver 714 is fixedly connected with the movable block 712.

[0036] It should be noted that when the movable block 712 approaches the fixed seat 713, the elastic plate 711 bulges downward.

[0037] Further, a downward pressing assembly 72 is provided between the movable block 712 and the fixed seat 713. The downward pressing assembly 72 includes two sets of driving rods 721. The two sets of driving rods 721 are respectively rotatably connected to the movable block 712 and the fixed seat 713. A downward pressing rod 722 is rotatably connected between the two sets of driving rods 721. A transverse groove 311 is formed inside the inner seat 31. The downward pressing rod 722 penetrates through the inside of the transverse groove 311. One end of the downward pressing rod 722 is rotatably connected to a downward pressing wheel 723, and the downward pressing wheel 723 is arranged on the inner side of the arc top of the elastic plate 711 close to the inner seat 31.

[0038] It should be noted that when the movable block 712 approaches the fixed seat 713, the connection point of the two sets of driving rods 721 moves downward, thereby driving the downward pressing rod 722 to move downward, so that the downward pressing wheel 723 presses the arc top of the elastic plate 711, thereby increasing the bending degree of the elastic plate 711.

[0039] In this embodiment, the implementation scenario is specifically as follows: The movable block 712 is pushed by the linear actuator four 714 to approach the fixed seat 713, so that one end of the elastic plate 711 approaches the other end. According to the common knowledge in the art, when the two ends of the arc-shaped part approach, the arc top will protrude in the direction away from the two ends. Therefore, the arc surface of the elastic plate 711 "becomes steeper", causing the "liquefied" molten slag to concentrate towards the arc top and accelerating the downward dripping speed of the "liquefied" molten slag. The approach of the movable block 712 to the fixed seat 713 can cause the downward pressing rod 722 to move downward, so as to maintain the convex state by pressing the arc top position of the elastic plate 711 to achieve a better state.

[0040] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An automatic opening type vertical steelmaking furnace, comprising a support (1), a furnace body (2) being mounted on the support (1), a furnace cover (3) being mounted on the top of the furnace body (2), characterized in that: A support mechanism (4) is installed on one side of the furnace body (2), and the support mechanism (4) is movably connected to the furnace cover (3). A turning drive mechanism (5) is installed on the support mechanism (4), and the turning drive mechanism (5) is used to drive the furnace cover (3) away from the upper edge (21) of the furnace body (2); A blocking device is installed on the inner side of the furnace cover (3) corresponding to the upper edge (21), and the blocking device is used to prevent the molten slag on the furnace cover (3) from falling onto the upper edge (21); The blocking device is a flow guiding mechanism (7), the flow guiding mechanism (7) comprising a bending assembly (71), and the bending assembly (71) is arranged on the furnace cover (3), the bending assembly (71) comprising an elastic plate (711), the elastic plate (711) being movably arranged at the bottom of the inner seat (31), the two ends of the elastic plate (711) being respectively fixedly connected with a movable block (712) and a fixed seat (713), and the movable block (712) is slidably arranged inside the furnace cover (3), the fixed seat (713) is fixedly arranged at one end inside the furnace cover (3), a linear drive four (714) is installed at one end of the furnace cover (3) near the movable block (712), and the output end of the linear drive four (714) is fixedly connected to the movable block (712); A pressing assembly (72) is provided between the movable block (712) and the fixed seat (713), and the pressing assembly (72) comprises two groups of driving rods (721), the two groups of driving rods (721) are rotatably connected to the movable block (712) and the fixed seat (713) respectively, a pressing rod (722) is rotatably connected between the two groups of driving rods (721), a transverse groove (311) is provided inside the inner seat (31), the pressing rod (722) passes through the inside of the transverse groove (311), one end of the pressing rod (722) is rotatably connected to a pressing wheel (723), and the pressing wheel (723) is provided on the inner side of the inner seat (31) near the arc top of the elastic plate (711).

2. The automatic opening type vertical steelmaking furnace according to claim 1, characterized in that: The support mechanism (4) is a support seat 1 (41), the top of the support seat 1 (41) protrudes above the furnace cover (3), an adjustment port (411) is provided on the support seat 1 (41), an end seat 1 (32) is fixedly provided at one end of the furnace cover (3) corresponding to the support seat 1 (41), the flip drive mechanism (5) is a linear drive 2 (51), and the output end of the linear drive 2 (51) passes through the adjustment port (411), and the linear drive 2 (51) drives the furnace cover (3) to move vertically along the axis of the furnace body (2) through the end seat 1 (32).

3. The automatic opening type vertical steelmaking furnace according to claim 2, characterized in that: A linkage plate (321) is rotatably connected between the end seat 1 (32) and the linear drive 2 (51); a side of the end seat 1 (32) away from the furnace cover (3) is open, and the other side of the end seat 1 (32) is closed.

4. The automatic opening type vertical steelmaking furnace according to claim 3, characterized in that: Adjustment grooves (412) are provided on both sides of the adjustment port (411), and the adjustment grooves (412) are opened on the support seat 1 (41). Connecting shafts (322) are fixedly provided on both sides of the end seat 1 (32), and the connecting shafts (322) are slidably arranged inside the adjustment grooves (412).

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