Electric furnace tapping hole locking device and electric furnace

Abstract

The utility model relates to the technical field of metal smelting, and discloses an electric furnace tapping hole locking device and an electric furnace. The electric furnace tapping hole locking device comprises a rotating shaft, a lifting mechanism arranged in the axial direction of the rotating shaft, an elastic assembly arranged at the end, close to the lifting mechanism, of the rotating shaft, a rotating mechanism connected to one side of the rotating shaft and a tray assembly, and the tray assembly comprises a tray. When the locking device for the tapping hole of the electric furnace works, the lifting mechanism applies acting force to the rotating shaft, so that the rotating shaft moves downwards, and the elastic assembly is in a compressed state. And after the rotating shaft stops moving downwards, the tray is driven by the rotating mechanism to rotate to the position below the tapping hole of the electric furnace, and when the lifting mechanism retracts to apply acting force to the rotating shaft, the tray is driven by the elastic assembly to move upwards and press the plugging component. According to the scheme, the tray can be tightly attached to the plugging component arranged at the tapping hole of the electric furnace, so that the safety and the reliability of the operation of the electric furnace are improved.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a locking device for the tapping spout of an electric furnace and an electric furnace. Background Technology

[0002] Electric furnaces, as an important component of the modern steel industry, are widely used in the steelmaking field due to their high efficiency, flexibility, and low carbon emissions.

[0003] During smelting, the bottom taphole of an eccentric electric furnace is sealed with a refractory-supported plugging component, which is then held in place by a bottom tray. Under external vibration, gaps can form between the bottom tray and the plugging component, and the refractory material can also loosen. During metal smelting, molten steel in the eccentric electric furnace can leak out along these gaps, causing equipment burnout, furnace shutdown, and resulting in the loss of molten steel and energy. Utility Model Content

[0004] In view of this, this utility model proposes a locking device for the steel tapping port of an electric furnace and an electric furnace, which solves the problem that the bottom tray of the eccentric electric furnace and the sealing component that seals the steel tapping port do not fit tightly and are prone to gaps or even loosening under external vibration, which causes molten steel in the electric furnace to flow out along the gaps, resulting in equipment burnout and loss of molten steel and energy.

[0005] On one hand, this utility model embodiment provides a locking device for the tapping spout of an electric furnace, comprising:

[0006] Rotating shaft;

[0007] A lifting mechanism is provided along the axial direction of the rotating shaft. The lifting mechanism is used to apply a force to the rotating shaft so that the rotating shaft moves downward.

[0008] An elastic component is installed at one end of the rotating shaft near the lifting mechanism. The elastic component is used to be in a compressed state when the lifting mechanism applies a force to the rotating shaft.

[0009] A rotating mechanism connected to one side of the rotating shaft, which is used to drive the rotating shaft to rotate;

[0010] A tray assembly connected to one side of the rotating shaft includes a tray that is rotated to below the electric furnace taphole by the rotating mechanism, and when the lifting mechanism retracts the force applied to the rotating shaft, it presses upward against the sealing component located at the electric furnace taphole by the elastic component.

[0011] In some embodiments, the pallet includes a pallet body and a boss disposed on one side of the pallet body, the boss being disposed corresponding to a sealing component.

[0012] In some embodiments, the electric furnace taphole locking device further includes: a pressing component and a first fixed bracket, wherein the pressing component, the elastic component and the first fixed bracket are sequentially arranged on the rotating shaft in a direction away from the lifting mechanism, wherein the elastic component abuts against the pressing component and the first fixed bracket respectively, the pressing component is fixedly connected to the rotating shaft, the first fixed bracket is fixed on the side wall of the electric furnace, and the rotating shaft passes through the end of the first fixed bracket away from the side wall of the electric furnace.

[0013] In some implementations, the clamping component is connected to the rotating shaft by a thread.

[0014] In some implementations, the resilient component includes at least one set of disc springs.

[0015] In some embodiments, the first fixed bracket includes a first fixed seat and a first engaging portion connected to the first fixed seat. The first fixed seat is connected to the side wall of the electric furnace, and the side of the first engaging portion away from the first fixed seat has an arc-shaped groove for the passage of a rotating shaft.

[0016] In some embodiments, the electric furnace taphole locking device further includes:

[0017] A second fixed bracket is provided on the rotating shaft. The second fixed bracket includes a second fixed seat and a second engaging part connected to the second fixed seat. The second fixed seat is connected to the side wall of the electric furnace. The side of the second engaging part away from the second fixed seat has an arc-shaped groove for connecting the rotating shaft.

[0018] In some embodiments, the electric furnace taphole locking device further includes:

[0019] A fixed lug is provided on one side of the rotating shaft;

[0020] The rotating mechanism is a rotating hydraulic cylinder, which includes a connecting shaft arranged along its axial direction, and the connecting shaft is hinged to a fixed shaft lug.

[0021] In some embodiments, the pallet assembly further includes a pallet support, with the pallet and the rotating shaft respectively connected to both ends of the pallet support.

[0022] In some embodiments, the tray support includes:

[0023] The first connecting rod has one end connected to the rotating shaft and the other end connected to the tray.

[0024] The second connecting rod is shorter than the first connecting rod. One end of the second connecting rod is connected to the rotating shaft, and the other end of the second connecting rod is connected to the first connecting rod. The first connecting rod, the second connecting rod, and the rotating shaft connecting the first connecting rod and the second connecting rod form a triangle.

[0025] In some embodiments, the fixed lug includes: a pin, and a first steel plate and a second steel plate fixedly connected to the rotating shaft, wherein the connecting shaft is movably connected between the first steel plate and the second steel plate via the pin, and has a gap between the connecting shaft and the first steel plate and / or the second steel plate.

[0026] In some embodiments, the lifting mechanism is a single-acting hydraulic cylinder, which includes a trunnion, and the device further includes:

[0027] The first fixed support and the second fixed support are respectively located on both sides of the single-acting oil cylinder. The trunnion passes through the first fixed support and the second fixed support respectively. The first fixed support and the second fixed support are connected to the side wall of the electric furnace.

[0028] The rotating cylinder fixing support includes a mounting base and a connecting plate connected to the mounting base. The mounting base is connected to the side wall of the electric furnace, and the side of the connecting plate away from the mounting base is connected to the end of the rotating mechanism away from the connecting shaft.

[0029] On the other hand, this utility model embodiment also provides an electric furnace, including the electric furnace tapping port locking device as described in any of the above embodiments.

[0030] This utility model has at least the following beneficial effects:

[0031] This utility model provides a locking device for the taphole of an electric furnace and an electric furnace. The locking device includes: a rotating shaft, a lifting mechanism arranged axially along the rotating shaft, a rotating mechanism connected to one side of the rotating shaft, and a tray assembly connected to one side of the rotating shaft. The lifting mechanism applies a force to the rotating shaft to cause it to move downwards. The rotating mechanism drives the rotating shaft to rotate. The tray assembly includes a tray that rotates under the influence of the rotating mechanism to a position below the taphole of the electric furnace. When the lifting mechanism releases the force applied to the rotating shaft, the tray presses upwards against a sealing component located at the taphole. This utility model ensures a tight fit between the tray and the sealing component at the taphole, preventing gaps and loosening of the sealing component under vibration conditions, thus improving the electric furnace's operating efficiency and enhancing its safety and reliability. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0033] Figure 1A schematic diagram of the structure of a locking device for the tapping spout of an electric furnace provided in this embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a first fixed bracket provided in an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of a fixed shaft lug provided for an embodiment of the present utility model.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1: Rotating shaft; 2: Lifting mechanism; 21: Trunnion; 3: Rotating mechanism; 4: Pallet assembly; 41: Pallet; 411: Pallet body; 412: Boss; 42: Pallet bracket; 421: First connecting rod; 422: Second connecting rod; 5: Pressing component; 6: Elastic component; 61: Disc spring; 7: First fixed bracket; 71: First fixed seat; 72: First engaging part; 721: Arc-shaped groove; 8: Second fixed bracket; 9: Fixed shaft lug; 91: First steel plate; 92: Second steel plate; 93: Pin; 10: Rotating cylinder fixed support; 101: Mounting seat; 102: Connecting plate; 11: First fixed support; 12: Second fixed support. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0040] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be located directly or indirectly on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0042] The present invention will now be described in detail with reference to the embodiments and accompanying drawings.

[0043] The first aspect of this utility model embodiment provides a locking device for the tap hole of an electric furnace, such as... Figure 1 As shown, the electric furnace taphole locking device includes: a rotating shaft 1, a lifting mechanism 2 arranged axially along the rotating shaft 1, an elastic component 6 disposed at one end of the rotating shaft 1 near the lifting mechanism 2, a rotating mechanism 3 connected to one side of the rotating shaft 1, and a tray assembly 4 connected to one side of the rotating shaft 1. The lifting mechanism 2 applies a force to the rotating shaft 1 to cause it to move downwards. The elastic component 6 is compressed when the lifting mechanism applies a force to the rotating shaft. The rotating mechanism 3 drives the rotating shaft 1 to rotate. The tray assembly 4 includes a tray 41, which rotates under the drive of the rotating mechanism 3 to below the electric furnace taphole, and when the lifting mechanism 2 retracts the force applied to the rotating shaft 1, it presses upwards against the sealing component disposed at the electric furnace taphole under the drive of the elastic component 6.

[0044] Specifically, the electric furnace in this embodiment of the present invention can be an eccentric electric furnace or other types of electric furnaces, and is not specifically limited here. The lifting mechanism 2 can be a device that provides vertical movement along a straight line, such as a single-acting hydraulic cylinder, a linear displacement sensor, etc., and is not specifically limited here. The rotating mechanism 3 can be a device that provides a rotation function, such as a rotating hydraulic cylinder, an angular displacement sensor, etc., and is not specifically limited here.

[0045] Both the lifting mechanism 2 and the rotating mechanism 3 can be installed on the side wall of the electric furnace.

[0046] The electric furnace tapping spout locking device provided in this embodiment of the invention has the tray located on one side of the electric furnace in the initial position (i.e., the position when not in operation). In the working position, the lifting mechanism 2 applies downward pressure to the rotating shaft 1. Figure 1The force applied in the X direction (as shown in the diagram) causes the rotating shaft 1 to move downwards and compress the elastic component 8 downwards until the rotating shaft 1 stops moving, and the elastic component 8 is in a compressed state. At this time, the rotating mechanism 3 drives the rotating shaft 1 to rotate, and the tray assembly 4 set on the rotating shaft 1 rotates together. When the tray 41 of the tray assembly 4 rotates to below the electric furnace taphole, and the orthographic projection of the tray 41 in the X direction completely covers the orthographic projection of the sealing component in the X direction, the rotating mechanism 3 stops rotating. At this time, the lifting mechanism 2 can retract the force applied to the rotating shaft 1, and the elastic component 8 returns from the compressed state to the initial state. During the process of the elastic component 8 returning from the compressed state to the initial state, it drives the rotating shaft 1 to move upwards (i.e., in the opposite direction of the X direction), and the tray moves upwards along with the rotating shaft 1 until the tray presses against the sealing component set on the electric furnace taphole.

[0047] The present invention enables the pallet to fit tightly against the sealing component installed at the tap hole of the electric furnace. Under vibration, it can prevent gaps from forming between the pallet and the sealing component, as well as prevent the sealing component from loosening, thereby improving the electric furnace operating rate and enhancing the safety and reliability of the electric furnace operation.

[0048] In some embodiments of this utility model, such as Figure 1 As shown, the tray 41 of the tray assembly 4 of the electric furnace tapping hole locking device may include a tray body 411 and a boss 412 disposed on one side of the tray body 411, with the boss 412 corresponding to the sealing component.

[0049] The protrusion 412 further improves the fit between the tray and the sealing component, making the fit between the tray and the sealing component tighter.

[0050] The material of the tray 41 can be a metal material, such as stainless steel, thereby improving the strength of the tray and the reliability and operational stability of the entire electric furnace taphole locking device.

[0051] In some embodiments of this utility model, such as Figure 1 As shown, the electric furnace taphole locking device may further include: a clamping component 5 and a first fixed bracket 7. The clamping component 5, the elastic component 6, and the first fixed bracket 7 are arranged sequentially along the direction away from the lifting mechanism 2. The elastic component 6 abuts against both the clamping component 5 and the first fixed bracket 7. The clamping component 5 is fixedly connected to the rotating shaft 1. The first fixed bracket 7 is fixed to the side wall of the electric furnace, and the rotating shaft 1 passes through the end of the first fixed bracket 7 away from the side wall of the electric furnace.

[0052] The clamping component 5 is located at one end of the rotating shaft 1 near the lifting mechanism 2, and its two end faces along the axial direction of the rotating shaft abut against the lifting mechanism 2 and the elastic component 6, respectively. Through this clamping component 5, the elastic component 6 can be clamped, and the rotating shaft 1 can be protected, reducing the probability of deformation of the rotating shaft 1 and extending the service life of the rotating shaft 1 and the entire electric furnace taphole locking device.

[0053] The connection between the clamping component 5 and the rotating shaft 1 can be detachable, thereby improving the maintainability of the entire electric furnace taphole locking device. In some examples, the clamping component and the rotating shaft can be connected by threads, but this is not limited to this; other detachable connection methods are also possible. In some examples, the clamping component 5 can be as follows: Figure 1 The clamping block shown has a groove at one end that matches the internal thread of the rotating shaft 1, through which the clamping component 5 can be connected to the rotating shaft 1.

[0054] The clamping component 5 and the rotating shaft 1 can be made of metal materials, such as stainless steel, thereby improving the strength of the clamping component and the rotating shaft, as well as the reliability and operational stability of the entire electric furnace taphole locking device.

[0055] When the lifting mechanism 2 applies downward force, the elastic component 6 will deform, buffering the force of the lifting mechanism 2 on the shaft, causing the rotating shaft 1 to descend slowly, further improving the service life of the rotating shaft 1 and the entire electric furnace taphole locking device.

[0056] In some examples, the elastic component 6 may include one or more disc springs 61. Each set of disc springs 61 may include two discs, the end faces of which may be arc-shaped, and the two discs may be arranged opposite each other to form a set of disc springs 61. The disc springs with this structure can extend the service life of the elastic component 6 and further improve the service life of the rotating shaft 1 and the entire electric furnace taphole locking device.

[0057] The first fixed bracket 7 provides support for the elastic component 6 on the one hand, and can also fix the shaft in a proper radial direction on the other hand. Thus, it not only saves the space occupied by the entire electric furnace taphole locking device, but also avoids excessive shaking when the shaft moves, so that the tray can be accurately positioned on the sealing mechanism.

[0058] In some examples, such as Figure 1 and Figure 2 As shown, the first fixed bracket 7 may include a first fixed seat 71 and a first engaging portion 72 connected to the first fixed seat 71. The first fixed seat 71 is connected to the side wall of the electric furnace, and the first engaging portion 72 has an arc-shaped groove 721 on the side away from the first fixed seat. The arc-shaped groove 721 can be used to engage and engage the rotating shaft 1. The size of the arc-shaped groove 721 corresponds to that of the rotating shaft 1 for the passage of the rotating shaft 1.

[0059] The first fixed support 7 can be made of metal, such as stainless steel, thereby improving the strength of the first fixed support, as well as the reliability and operational stability of the entire electric furnace taphole locking device.

[0060] In some embodiments of this utility model, such as Figure 1 As shown, the electric furnace taphole locking device may further include a second fixed bracket 8 disposed on the rotating shaft. The second fixed bracket 8 may include a second fixed seat and a second engaging portion connected to the second fixed seat. The second fixed seat is connected to the side wall of the electric furnace, and the side of the second engaging portion away from the second fixed seat has an arc-shaped groove for connecting the rotating shaft.

[0061] Specifically, the size and structure of the second fixed bracket 8 can be the same as the first fixed bracket 1. The second fixed bracket 8 can limit the range of motion of the rotating shaft 1 in its radial direction, avoid excessive shaking when the shaft moves, and enable the tray to be accurately positioned in the sealing mechanism.

[0062] In some embodiments of this utility model, such as Figure 1 As shown, the electric furnace taphole locking device may further include a fixed lug 9 disposed on one side of the rotating shaft 1. The rotating mechanism 3 may be a rotating cylinder, which includes a connecting shaft 31 disposed along its axial direction, and the connecting shaft 31 is hinged to the fixed lug 9.

[0063] Specifically, such as Figure 3 As shown, the fixed shaft lug 9 may include: a pin 93, a first steel plate 91 and a second steel plate 92 connected to the rotating shaft 1, and a connecting shaft 31 movably connected between the first steel plate 91 and the second steel plate 92 via the pin 93, and there is a gap between the connecting shaft 31 and the first steel plate 91 and / or the second steel plate 92.

[0064] Specifically, the first steel plate 91, the second steel plate 92 and the connecting shaft 31 are respectively provided with through holes for the pin 93 to pass through. The pin 93 passes through the through holes on the first steel plate 91, the connecting shaft 31 and the second steel plate 92 in sequence, so that the pin 93 is hinged to the first steel plate 91 and the second steel plate 92.

[0065] There is a certain gap between the connecting shaft 31 and the first steel plate 91 along the axial direction of the rotation shaft. There is also a certain gap between the connecting shaft 31 and the second steel plate 92 along the axial direction of the rotation shaft. Through the gaps between the connecting shaft 31 and the first steel plate 91 and between the connecting shaft 31 and the second steel plate 92, the rotating shaft 1 can affect the rotating mechanism 3 when it moves downward with the lifting mechanism 2 or moves upward under the drive of the elastic component 6 to press the sealing component. In some examples, this gap can be greater than 1 cm, for example, 1.5 cm, 2 cm or 2.5 cm, etc., and is not specifically limited here.

[0066] In some examples, a first positioning pin and a second positioning pin are provided at both ends of the pin shaft to keep the position of the pin shaft fixed. Specifically, the first positioning pin can be set at the position of the pin shaft 93 near the upper plane of the first steel plate 91 (i.e., the plane of the first steel plate 91 facing the lifting mechanism 2), and the second positioning pin can be set at the position of the pin shaft 93 near the lower plane of the second steel plate 92 (i.e., the plane of the second steel plate 92 away from the lifting mechanism 2).

[0067] In some examples, the first steel plate 91 and the second steel plate 92 can be connected to the rotating shaft 1 by welding, thereby improving the strength and reliability of the connection and making it less prone to cracking between the steel plates and the rotating shaft.

[0068] In some embodiments of this utility model, the electric furnace taphole locking device may further include a rotating hydraulic cylinder fixing support 10. The rotating hydraulic cylinder can be connected to the side wall of the electric furnace through the rotating hydraulic cylinder fixing support 10.

[0069] Specifically, the rotating cylinder fixing support 10 may include a mounting base 101 and a connecting plate 102 connected to the mounting base 101. The mounting base 101 is connected to the side wall of the electric furnace, and the side of the connecting plate 102 away from the mounting base 101 is connected to the end of the rotating cylinder away from its connecting shaft 31.

[0070] The mounting base 101 and the connecting plate 102 can be made of metal materials, such as stainless steel, thereby improving the strength of the rotating cylinder fixing support, as well as the reliability and operational stability of the entire electric furnace taphole locking device.

[0071] In some examples, the mounting base 101 can be welded to the side wall of the electric furnace, thereby improving the strength and reliability of the connection between the rotating cylinder fixed support and the side wall of the electric furnace, making it less prone to cracking and ensuring that the rotating cylinder can operate stably for a long time.

[0072] In some examples, the connecting plate 102 and the end of the rotary cylinder away from its connecting shaft 31 can be connected by a pin, thereby improving the maintainability of the equipment.

[0073] In some embodiments of this utility model, such as Figure 1 As shown, the pallet assembly 41 may also include a pallet support 42, with the pallet 41 and the rotating shaft 1 respectively connected to both ends of the pallet support 42.

[0074] Specifically, such as Figure 1 As shown, the tray support 42 may include a first connecting rod 421 and a second connecting rod 422. One end of the first connecting rod 421 is connected to the rotating shaft 1, and the other end of the first connecting rod 421 is connected to the tray 41.

[0075] The length of the second connecting rod 422 is less than that of the second connecting rod 421. One end of the second connecting rod 422 is connected to the rotating shaft 1, and the other end of the second connecting rod 422 is connected to the first connecting rod 421. The first connecting rod 421, the second connecting rod 422, and the rotating shaft portion connected between the first connecting rod 421 and the second connecting rod 422 form a triangle, thereby improving the stability of the connection between the tray support 42 and the rotating shaft 1.

[0076] In some examples, the first connecting rod 421 and the second connecting rod 422 can be made of metal, such as stainless steel, thereby improving the strength of the tray support and the reliability and operational stability of the entire electric furnace taphole locking device.

[0077] In some examples, the pallet support 42 and the rotating shaft 1 can be connected by welding, thereby further improving the stability of the connection between the pallet support 42 and the rotating shaft 1, and improving the stability and reliability of the electric furnace tapping hole locking device.

[0078] In some examples, the first connecting rod 421 may include: a first connecting part and a second connecting part connected end to end, the end of the first connecting part away from the second connecting part being connected to the rotating shaft 1, and the end of the second connecting part away from the first connecting part being connected to the tray.

[0079] In some examples, the first connecting part and the second connecting part of the first connecting rod 421 may have a certain included angle, which can reduce the rotation range of the rotating cylinder and save rotation space.

[0080] Specifically, the included angle between the first connecting part and the second connecting part can be greater than 90° and less than 180°. For example, the included angle between the first connecting part and the second connecting part can be 100°, 110°, 120°, 130°, 140°, 150° or 160°.

[0081] In some examples, the second connecting rod 422 can be strip-shaped to assist in supporting the first connecting rod 421.

[0082] In some examples, to improve the reliability of the connection between the pallet support 42 and the pallet, the pallet support 42 can be welded to the side of the pallet 41 away from the lifting mechanism 2.

[0083] In some embodiments of this utility model, such as Figure 1As shown, the lifting mechanism 2 can be a single-acting hydraulic cylinder, which may include a trunnion 21. The electric furnace taphole locking device may also include: a first fixed support 11 and a second fixed support 12 respectively disposed on both sides of the single-acting hydraulic cylinder, the trunnion 21 passing through the first fixed support 11 and the second fixed support 12 respectively, and the first fixed support 11 and the second fixed support 12 being connected to the side wall of the electric furnace.

[0084] The following describes the electric furnace tapping hole locking device provided in the embodiments of this utility model through specific examples. It should be understood that the following examples are only used to explain this utility model and are not intended to limit this utility model.

[0085] like Figure 1 As shown, the electric furnace tapping hole locking device includes: a rotating shaft 1, a lifting mechanism 2 disposed above the rotating shaft 1, a pressing component 5, an elastic component 6, a first fixed bracket 7, a second fixed bracket 8, and a fixed shaft lug 9 arranged sequentially along the axial direction of the rotating shaft 1, a selection mechanism 3 connected to the rotating shaft 1 through the fixed shaft lug 9, and a tray assembly 4 disposed below the rotating mechanism 3 and connected to the rotating shaft 1.

[0086] The lifting mechanism 2 is a single-acting hydraulic cylinder, and the rotating mechanism 3 is a rotating hydraulic cylinder. The lifting mechanism 2 is connected to the side wall of the electric furnace via a first fixed support 11 and a second fixed support 12. The rotating mechanism 3 is connected to the side wall of the electric furnace via a rotating hydraulic cylinder fixed support 10.

[0087] The elastic component 6 includes three sets of disc springs stacked sequentially along the rotation axis.

[0088] The pallet assembly 4 includes a pallet 41 and a pallet support 42. The pallet 41 is connected to the rotating shaft 1 via the pallet support 42. The pallet 41 includes a pallet body 411 and a boss 412 disposed on one side of the pallet body 411, the boss 412 being correspondingly disposed with a sealing component. The pallet support 42 includes a first connecting rod 421 and a second connecting rod 422, the length of the second connecting rod 422 being less than that of the second connecting rod 421, the second connecting rod 422 and the rotating shaft 1 forming a triangle. The first connecting rod 421 includes a first connecting part and a second connecting part connected end to end, with a 120° included angle between the first connecting part and the second connecting part.

[0089] In the initial position, the tray assembly 4 of the electric furnace is located on one side of the furnace, and the rotating shaft 1 presses against the three stacked disc springs under the action of the lifting mechanism 2. During operation, based on the downward force applied by the lifting mechanism 2 to the rotating shaft 1, the rotating shaft 6 moves the tray 41 and tray support 42 of the tray assembly 4 downward, and the three disc springs are compressed downward under the force applied by the lifting mechanism 2. When the rotating mechanism 3 rotates the rotating shaft 1 and the tray 41 to below the taphole, the lifting mechanism 2 releases the piston rod, and the three pressed disc springs return to their original position. During the return process, the three disc springs drive the rotating shaft 6 to move upward, and the tray 10 moves upward with the rotating shaft 6 to press against the sealing component blocking the taphole. Through the above-mentioned electric furnace taphole locking device, the tray can be tightly fitted with the sealing component set at the electric furnace taphole. Under vibration environment, it can prevent gaps from forming between the tray and the sealing component, and prevent the sealing component from loosening, thereby improving the electric furnace operating rate and enhancing the safety and reliability of the electric furnace operation.

[0090] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention also provides an electric furnace, including the electric furnace tapping port locking device as described in any of the above embodiments.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A locking device for the tapping spout of an electric furnace, characterized in that, The utility model relates to a device for pressing sealing component of electric furnace, including: Rotary shaft; Lifting mechanism is arranged along the axial direction of the rotary shaft, and the lifting mechanism is used for applying force to the rotary shaft to make the rotary shaft move downward; Resilient assembly is arranged on one end of the rotary shaft close to the lifting mechanism, and the resilient assembly is in compression when the lifting mechanism applies force to the rotary shaft; Rotating mechanism is connected to one side of the rotary shaft, and the rotating mechanism is used to drive the rotary shaft to rotate; The tray assembly includes a tray, and the tray is used to rotate to the lower side of the electric furnace tapping hole under the driving of the rotating mechanism and is pressed upward to the sealing component arranged on the electric furnace tapping hole under the driving of the resilient assembly when the lifting mechanism retracts the force applied to the rotary shaft.

2. The electric furnace taphole locking device according to claim 1, characterized by The tray includes a tray body and a boss arranged on one side of the tray body, and the boss is arranged correspondingly with the sealing component.

3. The electric furnace taphole locking device according to claim 1, characterized by Further including: The pressing component, the resilient assembly and the first fixed support are sequentially arranged on the rotary shaft in the direction away from the lifting mechanism, the resilient assembly respectively abuts against the pressing component and the first fixed support, the pressing component is fixedly connected with the rotary shaft, the first fixed support is fixed on the electric furnace side wall, and the rotary shaft passes through the first fixed support away from the electric furnace side wall.

4. The electric furnace taphole locking device according to claim 3, characterized by The pressing component and the rotary shaft are connected through threads; The resilient assembly includes at least one group of disc springs; The first fixed support includes a first fixed seat and a first clamping part connected with the first fixed seat, the first fixed seat is connected with the electric furnace side wall, and the first clamping part has an arc-shaped groove on the side away from the first fixed seat, and the arc-shaped groove is used for passing through the rotary shaft.

5. The electric vessel tapping nozzle locking device according to claim 1, characterized in that Further including: The second fixed support is arranged on the rotary shaft, and the second fixed support includes a second fixed seat and a second clamping part connected with the second fixed seat, the second fixed seat is connected with the electric furnace side wall, and the second clamping part has an arc-shaped groove connected with the rotary shaft on the side away from the second fixed seat.

6. The electric vessel tapping nozzle locking device according to claim 1, characterized in that Further including: The fixed shaft lug is arranged on one side of the rotary shaft; The rotating mechanism is a rotating oil cylinder, and the rotating oil cylinder includes a connecting shaft arranged along the axial direction, and the connecting shaft is hinged with the fixed shaft lug.

7. The electric vessel tapping nozzle locking device according to claim 1, characterized in that The tray assembly further includes a tray support, and the tray and the rotary shaft are respectively connected to two ends of the tray support.

8. The electric vessel tapping nozzle locking device according to claim 7, characterized in that The tray support includes: A first connecting rod, one end of the first connecting rod is connected with the rotary shaft, and the other end of the first connecting rod is connected with the tray; A second connecting rod, the length of the second connecting rod is smaller than that of the second connecting rod, one end of the second connecting rod is connected with the rotary shaft, and the other end of the second connecting rod is connected with the first connecting rod, and the first connecting rod, the second connecting rod and the rotary shaft connected between the first connecting rod and the second connecting rod form a triangle.

9. The electric vessel tapping nozzle locking device according to claim 6, characterized in that The fixed shaft lug comprises a pin shaft, a first steel plate and a second steel plate fixedly connected with the rotating shaft, wherein the connecting shaft is movably connected between the first steel plate and the second steel plate through the pin shaft, and has a gap between the first steel plate and / or the second steel plate; Alternatively, the lifting mechanism is a single-acting oil cylinder, the single-acting oil cylinder comprises a trunnion, and the electric furnace tapping hole locking device further comprises: first and second fixed supports separately arranged on two sides of the single-acting oil cylinder, the trunnion passes through the first and second fixed supports respectively, and the first and second fixed supports are connected with the side wall of the electric furnace; a rotating oil cylinder fixed support, the rotating oil cylinder fixed support comprises a mounting seat and a connecting plate connected with the mounting seat, the mounting seat is connected with the side wall of the electric furnace, and the connecting plate away from the mounting seat is connected with one end of the rotating mechanism away from the connecting shaft.

10. An electric range characterized by, The electric furnace tapping hole locking device comprises any one of the electric furnace tapping hole locking devices in 1 to 9.

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