Trough device for liquid metal pouring

Abstract

The application relates to the technical field of metallurgical industry, and discloses a chute device for liquid metal pouring. In order to solve the problem of large impact force on an ingot mold, a hydraulic oil cylinder and an angle adjusting mechanism are arranged. When pouring operation is performed, the liquid metal will generate an impact force on the upper surface of the chute. The impact force is transmitted to the hydraulic oil cylinder at the bottom of the angle adjusting mechanism. When the pouring flow is increased, the extension amount of the hydraulic oil cylinder is increased, so that the inclination angle of the chute is reduced. Through the above action, the minimum impact of the liquid metal on the ingot mold is realized, and the slag has sufficient crystallization time. When the pouring flow is very small, the extension amount of the hydraulic oil cylinder is reduced, so that the inclination angle of the chute is increased, and then the liquid metal is rapidly poured into the ingot mold, so that the liquid metal is not solidified in the chute. Through the above action, the function of real-time adjustment of the inclination angle of the chute is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical industry, and particularly relates to a chute device for liquid metal pouring. BACKGROUND

[0002] Liquid metal pouring is a process of pouring high-temperature liquid ferroalloy or industrial silicon smelted by an electric arc furnace into an ingot mold and waiting for the liquid metal to cool and solidify. In the above process, the liquid metal needs to flow into the fixed ingot mold through a ladle and a high-temperature resistant chute, and meanwhile, a large amount of slag will crystallize on the surface of the chute during pouring, which will not only affect the pouring speed, but also need to clean the slag on the surface of the chute or replace a new chute for pouring.

[0003] In the prior art, the slag needs to be cleaned by a forklift or a slagging machine for long-distance operation, which is time-consuming and easy to damage the refractory material of the chute. In addition, it is also inconvenient to disassemble and repair the chute after long-time pouring. Furthermore, a large impact force of the chute on the ingot mold will result in ineffective crystallization of the liquid metal, thereby reducing the work efficiency, and a small impact force of the chute on the ingot mold will result in direct solidification of the liquid metal in the chute, thereby causing a large amount of cleaning work. SUMMARY

[0004] The present application provides a chute device for liquid metal pouring, which has the advantages of quick replacement and real-time adjustment of the inclination angle of the chute, so as to solve the problems of long cleaning and repair time, low pouring efficiency and large impact force of the ingot mold.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: a chute device for liquid metal pouring, comprising: a chute moving vehicle and an angle adjusting mechanism, the upper side of the chute moving vehicle is provided with the angle adjusting mechanism, the rear end of the angle adjusting mechanism is connected with the chute moving vehicle through a hinge shaft; a chute is arranged above the angle adjusting mechanism; a hydraulic cylinder is arranged in the interior of the chute moving vehicle corresponding to the position of the front end of the angle adjusting mechanism, a pressure sensor is fixedly installed on the lower side of the front end of the angle adjusting mechanism, the pressure sensor is electrically connected with the hydraulic pump of the hydraulic cylinder, the upper end of the hydraulic cylinder is hinged with the pressure sensor, and the lower end of the hydraulic cylinder is hinged with the chute moving vehicle; an angle sensor is fixedly installed on the lower side of the angle adjusting mechanism, and the angle sensor is electrically connected with the hydraulic pump of the hydraulic cylinder.

[0006] Further, the two sides of the chute are provided with pin shafts; the angle adjusting mechanism is provided with a clamping groove corresponding to the position of the pin shaft, and the chute is limited in the clamping groove through the pin shaft.

[0007] Further, the two sides of the angle adjusting mechanism and the front side position of the clamping groove are provided with limiting mechanisms, which are clamped and fixed with the chute.

[0008] Further, the two sides of the angle adjusting mechanism and the front side position of the clamping groove are provided with limiting mechanisms, which are clamped and fixed with the chute.

[0009] Further, the bottom of the chute moving vehicle is provided with four rigid walking wheels, which are attached to the track and move on the upper surface of the track; the winch mechanism is fixedly installed on one side of the track, and a fixed pulley is fixedly installed on the other end of the track; a steel wire rope is wound on the winch mechanism, one end of the steel wire rope is fixedly connected to the side of the chute moving vehicle facing the winch mechanism, the other end of the steel wire rope passes through the fixed pulley and is fixedly connected to the side of the chute moving vehicle away from the winch mechanism, and the lower end of the hydraulic oil cylinder is fixedly provided with the displacement sensor, which is electrically connected with the winch mechanism.

[0010] Further, the chute is composed of a groove body and a protective shell, the protective shell is movably sleeved on the outside of the groove body, and the pin shaft is fixedly installed on the two sides of the protective shell.

[0011] Further, the inside of the chute is provided with a bearing mechanism, which comprises a pressing plate and an elastic piece; the pressing plate is movably installed in the inner cavity of the protective shell and located below the groove body; the elastic piece is arranged on the lower side of the pressing plate, and the two ends of the elastic piece are fixedly connected with the pressing plate and the bottom wall of the protective shell, respectively.

[0012] Further, the two sides of the protective shell are provided with splash-proof mechanisms, which comprise a cover plate, a through groove, a limiting plate and a connecting piece; the cover plate is hingedly installed on the upper position of the two sides of the protective shell through a shaft, and the cover plate corresponds to the front side position of the chute; the through groove is opened on the two sides of the groove body, and the inner wall of the protective shell and the position corresponding to the through groove are fixedly provided with a limiting plate, which is movably connected with the through groove; the connecting piece is arranged in the through groove and located on the inner side of the limiting plate, the upper end of the connecting piece is hingedly connected with the side of the cover plate facing the chute through a shaft, and the lower end of the connecting piece is hingedly connected with the side of the pressing plate corresponding to the cover plate.

[0013] Further, the rear side of the cover plate and the side away from the chute are fixedly provided with an extension plate.

[0014] Further, the side of the cover plate facing the chute is equidistantly fixedly provided with a contact piece, which is arranged at an inclined angle.

[0015] Further, the front end of the groove body protrudes out of the protective shell.

[0016] The present application has the following beneficial effects:

[0017] The application provides a chute device for liquid metal pouring, through the setting of the hydraulic cylinder and the angle adjusting mechanism, when the pouring operation is performed, the liquid metal will generate an impact force on the upper surface of the chute, the impact force is transmitted to the hydraulic cylinder at the bottom of the angle adjusting mechanism, when the pouring flow becomes larger, the extension amount of the hydraulic cylinder increases, so that the inclination angle of the chute decreases, through the above action, the minimum impact of the liquid metal on the ingot mold is realized, and the slag has sufficient crystallization time, when the pouring flow is very small, the extension amount of the hydraulic cylinder decreases, so that the inclination angle of the chute increases, and then the liquid metal quickly flows into the ingot mold, so as not to solidify in the chute, through the above action, the function of real-time adjusting the inclination angle of the chute is realized.

[0018] Through the setting of the angle adjusting mechanism and the pin shaft, the chute is fixed into the clamping groove of the angle adjusting mechanism through the pin shaft, through the above action, the chute is convenient to replace, and then the influence on the pouring operation efficiency when the slag is cleaned and the chute is maintained is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0020] The application can be more clearly understood and appreciated from the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is a schematic diagram of the overall structure in the first embodiment of the application;

[0022] Figure 2 It is a side view of the overall structure in the first embodiment of the application;

[0023] Figure 3 It is a schematic diagram of the overall structure in the second embodiment of the application;

[0024] Figure 4 It is a schematic diagram of the chute body in the second embodiment of the application;

[0025] Figure 5 It is a schematic diagram of the connection state of the cover plate, the extension plate and the contact in the second embodiment of the application;

[0026] Figure 6 It is a schematic diagram of the internal structure of the protective shell in the second embodiment of the application;

[0027] Figure 7 It is a schematic diagram of the connection state of the pressing plate, the elastic member and the connecting member in the second embodiment of the application.

[0028] 1, chute moving vehicle; 2, angle adjusting mechanism; 3, hinged shaft; 4, chute; 40, groove body; 41, protective shell; 5, hydraulic oil cylinder; 6, angle sensor; 7, pin shaft; 8, limiting mechanism; 9, track; 10, rigid walking wheel; 11, hoisting mechanism; 12, displacement sensor; 13, pressing plate; 14, elastic member; 15, cover plate; 16, extension plate; 17, through groove; 18, limiting plate; 19, connecting piece; 20, contact piece. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one

[0031] Please refer to Figure 1 and Figure 2The application discloses a chute device for liquid metal pouring, which comprises a chute moving vehicle 1, an angle adjusting mechanism 2 arranged above the chute moving vehicle 1, a rear end of the angle adjusting mechanism 2 connected with the chute moving vehicle 1 through a hinge shaft 3, a chute 4 arranged above the angle adjusting mechanism 2, a hydraulic cylinder 5 arranged inside the chute moving vehicle 1 and corresponding to the position of a front end of the angle adjusting mechanism 2, a pressure sensor fixedly installed on the lower side of the front end of the angle adjusting mechanism 2, the pressure sensor and a hydraulic pump of the hydraulic cylinder 5 being electrically connected, for example, the two are coupled to realize linkage. However, the application is not limited to this, for example, the pressure sensor and a control element of the hydraulic pump are both connected to a control device to realize linkage. The upper end of the hydraulic cylinder 5 is hinged with the pressure sensor, the lower end of the hydraulic cylinder 5 is hinged with the chute moving vehicle 1, the pressure sensor has two predetermined values, when the liquid metal falling into the chute 4 is more, the pressure sensor outputs a signal of once increasing elongation to the hydraulic pump of the hydraulic cylinder 5; when the liquid metal falling into the chute 4 is less, the pressure sensor outputs a signal of once reducing elongation to the hydraulic pump of the hydraulic cylinder 5, in addition, when there is no liquid metal in the chute 4, the pressure sensor does not output a signal, an angle sensor 6 is fixedly installed on the lower side of the angle adjusting mechanism 2, the angle sensor 6 is electrically connected with the hydraulic pump of the hydraulic cylinder 5 (the angle sensor 6 has two predetermined values, when the inclination of the chute 4 is reduced or increased to a certain degree, the angle sensor 6 outputs a signal of once stopping operation to the hydraulic pump of the hydraulic cylinder 5). Further, the angle sensor 6 and the hydraulic pump are also coupled to realize linkage. However, the application is not limited to this, for example, the angle sensor 6 and a control element of the hydraulic pump are both connected to a control device to realize linkage.

[0032] When the pouring operation is carried out, the liquid metal will impact the upper surface of the chute 4, the impact force is transmitted to the pressure sensor through the chute 4 and the angle adjusting mechanism 2, and when the initial pouring flow is large, the pressure sensor outputs a signal to the hydraulic pump of the hydraulic cylinder 5, so that the hydraulic cylinder 5 is filled with oil, and then the extension amount of the hydraulic cylinder 5 is increased, so that the inclination angle of the chute 4 is reduced. Through the above action, when the liquid metal falls into the ingot mold through the chute 4, the impact on the ingot mold is minimized and the slag has sufficient crystallization time. Then, when the inclination angle of the chute 4 is reduced to a certain extent, the angle sensor 6 outputs a signal to the hydraulic pump of the hydraulic cylinder 5, so that the hydraulic cylinder 5 stops extending. When the pouring flow is small, the pressure sensor outputs a signal to the hydraulic pump of the hydraulic cylinder 5, so that the hydraulic cylinder 5 is backfilled with oil, and then the extension amount of the hydraulic cylinder 5 is reduced, so that the inclination angle of the chute 4 is increased, and then the liquid metal quickly flows into the ingot mold, so that it is not solidified in the chute 4. Then, when the inclination angle of the chute 4 is increased to a certain extent, the angle sensor 6 outputs a signal to the hydraulic pump of the hydraulic cylinder 5, so that the hydraulic cylinder 5 stops shortening. Through the above action, the function of real-time adjusting the inclination angle of the chute 4 is realized.

[0033] Please refer to Figure 1 and Figure 2 , both sides of the chute 4 are welded with a pin shaft 7, and the angle adjusting mechanism 2 is provided with a clamping groove corresponding to the position of the pin shaft 7. The chute 4 is fixed into the clamping groove of the angle adjusting mechanism 2 through the pin shaft 7.

[0034] Before the pouring operation is carried out, the chute 4 is fixed into the clamping groove of the angle adjusting mechanism 2 through the pin shaft 7. Then, when it is necessary to clean the slag or maintain the chute 4, the original chute 4 is directly removed and replaced with a new chute 4. Through the above action, the replacement of the chute 4 is convenient, and the influence on the pouring operation efficiency when cleaning the slag and maintaining the chute 4 is reduced.

[0035] Please refer to Figure 1 and Figure 2 , the limit mechanism 8 is arranged on both sides of the angle adjusting mechanism 2 and located in front of the clamping groove, and the limit mechanism 8 and the chute 4 form a clamping fixation.

[0036] Through the limit mechanism 8, the left and right swinging of the chute 4 is prevented, and the stability of the chute 4 is improved.

[0037] Please refer to Figure 1 and Figure 2The lower part of the chute moving vehicle 1 is provided with a track 9, the bottom of the chute moving vehicle 1 is provided with four rigid walking wheels 10, the rigid walking wheels 10 are attached to the track 9 and move on the upper surface of the track 9, one side of the track 9 is fixedly provided with a winch mechanism 11, the other side of the track 9 is fixedly provided with a fixed pulley, the winch mechanism 11 is wound with a steel wire rope, one end of the steel wire rope is fixedly connected to the side of the chute moving vehicle 1 facing the winch mechanism 11, the other end of the steel wire rope is wound around the fixed pulley and fixedly connected to the side of the chute moving vehicle 1 away from the winch mechanism 11, the lower end of the hydraulic oil cylinder 5 is fixedly provided with a displacement sensor 12 (when the chute moving vehicle 1 moves to the position corresponding to the ingot mold, the displacement sensor 12 outputs a signal to the winch mechanism 11 to stop running once), the output end of the displacement sensor 12 is electrically connected with the winch mechanism 11, the upper part of the chute 4 is provided with a ladle (prior art, not shown in the figure), used for pouring liquid metal into the chute 4, the front side of the chute 4 is provided with an ingot mold (prior art, not shown in the figure) at equal intervals, used for receiving the liquid metal flowing out of the chute 4.

[0038] When pouring is performed, the ladle is deflected, so that the liquid metal in the ladle falls into the chute 4, then the liquid metal in the chute 4 falls into the corresponding ingot mold, through the above-mentioned action, a single pouring operation is further completed, after the single pouring is completed, the ladle is reset, so that the liquid metal no longer enters the chute 4, then the winch mechanism 11 drives the chute moving vehicle 1 to move, so that the chute 4 moves to the position corresponding to the next position ingot mold, when the chute 4 moves to the position, the displacement sensor 12 outputs a signal to the winch mechanism 11, so that the winch mechanism 11 stops, through the above-mentioned action, the precise positioning of the chute 4 is further realized, finally, the pouring operation is performed again.

[0039] Example two

[0040] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 6The embodiment is an improvement on embodiment one, wherein the chute 4 is composed of a chute body 40 and a protective shell 41, the chute body 40 is a refractory brick (prior art), the protective shell 41 is slidingly sleeved on the outside of the chute body 40, the pin shaft 7 is fixedly installed on both sides of the protective shell 41 (not shown in the figure), the inner cavity of the protective shell 41 and the lower position of the chute body 40 are slidingly installed with the pressing plate 13, the lower side of the pressing plate 13 is provided with the elastic element 14, both ends of the elastic element 14 are fixedly connected with the pressing plate 13 and the bottom wall of the protective shell 41, the upper position of both sides of the protective shell 41 is hingedly installed with the cover plate 15, the cover plate 15 corresponds to the front side of the chute 4, both sides of the chute body 40 are provided with the through groove 17, the inner wall of the protective shell 41 and the position corresponding to the through groove 17 are welded with the limiting plate 18, the limiting plate 18 and the through groove 17 form a sliding connection, the inside of the limiting plate 18 in the through groove 17 is provided with the connecting piece 19, the upper end of the connecting piece 19 and the side of the cover plate 15 facing the chute 4 form a hinge through a shaft, the lower end of the connecting piece 19 and the side corresponding to the pressing plate 13 form a hinge through a shaft.

[0041] During the pouring operation, when the pouring flow is large, the liquid metal entering the chute body 40 will press the chute body 40 to move downward relative to the protective shell 41, so that the pressing plate 13 moves downward and compresses the elastic element 14, the pressing plate 13 moving downward pulls the cover plate 15 through the connecting piece 19, so that the cover plate 15 closes the front end of the chute body 40 (the liquid metal enters through the rear end of the chute body 40), so that when the inclination angle of the chute body 40 decreases, the cover plate 15 will block the liquid metal falling into the chute body 40 and splashing, through the above action, the waste of materials is reduced, and then when the pouring chute is small, the elastic element 14 releases the elastic force and drives the above structure to reset.

[0042] Please refer to Figure 3 and Figure 5 The rear side of the cover plate 15 and the side away from the chute 4 are welded with the extension plate 16.

[0043] Through the setting of the extension plate 16, the liquid metal is more easily entered into the chute body 40, and in this process, part of the liquid metal is easy to contact the rear side of the extension plate 16, and then slides along the side to the chute body 40, through this action, part of the slag in the liquid metal will crystallize on the extension plate 16, thereby reducing the amount of slag in the liquid metal crystallizing on the inner wall of the chute body 40, so that the influence of the crystallized slag on the pouring efficiency is reduced.

[0044] Please refer to Figures 3-7The contact piece 20 is welded on the side of the cover plate 15 facing the chute 4 at equal distance, and is arranged at an inclined angle. When the liquid metal in the chute 4 is less, the elastic force of the elastic piece 14 is greater than the sum of the weight of the chute 40, the pressing plate 13, the connecting piece 19, the cover plate 15, the extension plate 16, the contact piece 20 and the liquid metal in the chute 4. When the liquid metal in the chute 4 is more, the elastic force of the elastic piece 14 is less than the sum of the weight of the chute 40, the pressing plate 13, the connecting piece 19, the cover plate 15, the extension plate 16, the contact piece 20 and the liquid metal in the chute 4.

[0045] When the cover plate 15 closes the front end of the chute 40, the contact piece 20 extends into the chute 40 synchronously, so that the slag in the liquid metal contacts the contact piece 20, and then crystallizes on the surface of the contact piece 20. Through the above action, the crystallization amount of the inner wall of the chute 40 is reduced, the single use life of the chute 40 is prolonged, and the pouring efficiency is indirectly improved. At the same time, since the contact piece 20 extends into the chute 40, and the amount of the liquid metal discharged from the chute 4 is reduced, the height of the liquid metal in the chute 40 is increased through the above action, so that the slag in the liquid metal contacts the lower side of the cover plate 15, thereby further reducing the crystallization amount of the inner wall of the chute 40, prolonging the single use life of the chute 40, and indirectly improving the pouring efficiency.

[0046] Please refer to Figure 3 The front end of the chute 40 extends out of the protection shell 41.

[0047] Through the above arrangement, after the liquid metal is discharged from the chute 40, it will not enter the space between the protection shell 41 and the chute 40, thereby protecting the structure in the above space.

[0048] In the above embodiment, the more amount and the less amount of the liquid metal falling into the chute 4 are fixed ranges (when the ladle initially pours, the amount of the liquid metal at the pouring position is the more amount; when the ladle is about to finish pouring, the amount of the liquid metal at the pouring position is the less amount), and the structures in the second embodiment are all made of high-temperature-resistant materials.

Claims

1. A chute device for pouring liquid metal, characterized in that, include: A chute moving car (1) and an angle adjustment mechanism (2) are provided on the top of the chute moving car (1). The rear end of the angle adjustment mechanism (2) is connected to the chute moving car (1) through a hinge shaft (3). The chute (4) is positioned above the angle adjustment mechanism (2); The hydraulic cylinder (5) is located inside the chute moving car (1) at the front end of the angle adjustment mechanism (2). A pressure sensor is fixedly installed on the lower side of the front end of the angle adjustment mechanism (2). The pressure sensor is electrically connected to the hydraulic pump of the hydraulic cylinder (5). The upper end of the hydraulic cylinder (5) is hinged to the pressure sensor, and the lower end of the hydraulic cylinder (5) is hinged to the chute moving car (1). An angle sensor (6) is fixedly installed on the lower side of the angle adjustment mechanism (2), and the angle sensor (6) is electrically connected to the hydraulic pump of the hydraulic cylinder (5). The chute (4) is composed of a trough body (40) and a protective shell (41), and the protective shell (41) is movably sleeved on the outside of the trough body (40); The chute (4) is provided with a bearing mechanism inside, which includes a pressure plate (13) and an elastic element (14). The pressure plate (13) is movably installed in the inner cavity of the protective shell (41) and located below the groove (40); The elastic element (14) is provided on the lower side of the pressure plate (13), and the two ends of the elastic element (14) are respectively fixedly connected to the bottom wall of the pressure plate (13) and the protective shell (41); The protective shell (41) is provided with splash-proof mechanisms on both sides, and the splash-proof mechanisms include a cover plate (15), a through groove (17), a limiting plate (18), and a connector (19). The upper parts of both sides of the cover plate (15) and the protective shell (41) are connected by a shaft hinge. The cover plate (15) corresponds to the front side of the chute (4). A through groove (17) is opened on both sides of the groove body (40). A limiting plate (18) is fixed on the inner wall of the protective shell (41) and at the position corresponding to the through groove (17). The limiting plate (18) and the through groove (17) are movably connected. The connector (19) is set in the through groove (17) and located inside the limiting plate (18). The upper end of the connector (19) is hinged to the side of the cover plate (15) facing the chute (4) by a shaft. The lower end of the connector (19) is hinged to the side of the pressure plate (13) corresponding to the shaft by a shaft. The cover plate (15) has contact elements (20) fixed at equal intervals on the side facing the chute (4), and the contact elements (20) are set at an inclined angle.

2. The chute device for liquid metal casting according to claim 1, characterized in that, Pins (7) are fixedly installed on both sides of the protective shell (41); The angle adjustment mechanism (2) is provided with a slot corresponding to the pin (7), and the chute (4) is limited to the slot by the pin (7).

3. A chute device for pouring liquid metal according to claim 2, characterized in that, Limiting mechanisms (8) are provided on both sides of the angle adjustment mechanism (2) and at the front of the slot. The limiting mechanisms (8) cooperate with the slot to position the chute (4).

4. A chute device for pouring liquid metal according to claim 1, characterized in that, It also includes: track (9), hoisting mechanism (11) and displacement sensor (12). The bottom of the chute moving vehicle (1) is equipped with four rigid walking wheels (10), which are attached to the track (9) and move on the upper surface of the track (9); The winch mechanism (11) is fixedly installed on one side of the track (9), and a fixed pulley is fixedly installed at the other end of the track (9). A wire rope is wound on the winch mechanism (11). One end of the wire rope is fixedly connected to the side of the chute moving vehicle (1) facing the winch mechanism (11), and the other end of the wire rope passes around the fixed pulley and is fixedly connected to the side of the chute moving vehicle (1) away from the winch mechanism (11). The displacement sensor (12) is fixedly installed at the lower end of the hydraulic cylinder (5), and the displacement sensor (12) is electrically connected to the winch mechanism (11).

5. A chute device for pouring liquid metal according to claim 1, characterized in that, An extension plate (16) is fixed to the rear side of the cover plate (15) and the side facing away from the chute (4).

6. A chute device for pouring liquid metal according to claim 1, characterized in that, The front end of the groove (40) extends out of the protective shell (41).

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