An automatic tilt type constant speed casting device

Abstract

The application discloses an automatic tilting constant-speed casting device, which comprises a casting ladle, a pouring cup, a sliding rail and a floating flow guide, and the center of mass of the casting ladle and the floating flow guide after being hinged is located at the side of a ladle spout; the pouring cup is provided with an inlet at the top and a pouring gate at the bottom; the ladle spout extends into the inlet; the sliding rail is horizontally fixed on the inner wall of the pouring cup near the bottom; the floating flow guide is obliquely arranged in the pouring cup, the top end of the floating flow guide is hinged to the bottom of the ladle spout, and the bottom end of the floating flow guide is placed on the sliding rail. According to the application, the center of mass of the casting ladle is distributed to make the casting ladle automatically tilt to the side of the ladle spout, so that the molten iron in the casting ladle is poured into the pouring cup, the casting process does not need external power driving, energy saving and carbon reduction are achieved, and the floating flow guide always moves horizontally along with the casting of the casting ladle during the casting process, the splashing of the molten iron is reduced, the secondary oxidation is extremely low, and the product quality is good.

Description

Technical Field

[0001] This invention relates to the field of casting ladle technology, specifically to an automatic tilting constant speed casting device. Background Technology

[0002] Traditional large tilting casting ladles often use hydraulic drive, which has the advantages of large thrust and smooth rotation. However, it also has many disadvantages: First, in the initial stage of molten iron casting, the large drop in molten iron causes severe splashing, resulting in significant molten iron loss. Furthermore, secondary oxidation of the molten iron and the incorporation of gas affect product quality. Second, it requires large investment and has high maintenance costs. Third, the tilting requires a large amount of power, resulting in high energy consumption, and there is significant pollution from thermal radiation of molten iron and dust generated by falling molten iron during casting.

[0003] Therefore, providing an automatic tilting casting device that is unpowered and splash-free is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides an automatic tilting constant speed casting device to at least solve one of the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic tilting constant speed casting device includes: The casting ladle, after being hinged to the floating guide fluid, has its center of mass located on one side of its ladle nozzle; A pouring cup having an inlet at the top and a pouring gate at the bottom; the spout extends into the inlet; A slide rail is horizontally fixed to the inner wall of the pouring cup near the bottom. A floating guide fluid is obliquely distributed inside the pouring cup, and the top end of the floating guide fluid is hinged to the bottom of the spout, while the bottom end of the floating guide fluid is placed on the slide rail.

[0007] Furthermore, the casting ladle includes a casting ladle body, a turbine, a servo motor, and a worm gear. The turbine is sleeved and fixed on the trunnion of the casting ladle body. The servo motor is mounted on a support outside the casting ladle body. The worm gear is connected to the output shaft of the servo motor through a coupling, and the worm gear is meshed with the turbine.

[0008] Furthermore, the casting ladle also includes an angular profile plate, one corner of which is fixed to the casting ladle body at the ladle nozzle position, and the other corner is in close contact with the ladle wall. The bottom of the corner forms an iron passage between the bottom of the corner and the refractory material layer of the casting ladle body.

[0009] Furthermore, the inner cavity size of the floating guide fluid is larger than the inner cavity size of the nozzle.

[0010] Furthermore, the outer shell of the pouring cup includes a steel shell and a refractory material layer covering the inside of the steel shell.

[0011] Therefore, the present invention provides an automatic tilting constant speed casting device, which has the following advantages compared with the prior art: 1) Relying on the distribution of the center of gravity of the casting ladle, the casting ladle automatically tilts towards the ladle spout, so that the molten iron in the casting ladle is poured into the pouring cup. The casting process does not require external power, thus achieving energy saving and carbon reduction. 2) During the casting process, the floating guide fluid always moves horizontally following the casting ladle, resulting in less molten iron splashing, extremely low secondary oxidation, and good product quality; 3) By slowly releasing the braking force through the servo motor, precise constant speed is achieved, and the control accuracy is superior to that of hydraulically driven casting ladles and electrically driven casting ladles; 4) There is very little splashing during the casting process, and the iron yield is 3-8 percentage points higher than that of conventional technology; power consumption is reduced by more than 90%. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 The attached figure is a cross-sectional view of an automatic tilting constant speed casting device provided by the present invention; Figure 2 The attached figure is a schematic diagram of the relationship between the floating guide fluid and the slide rail provided by the present invention. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figure 1-2As shown in the figure, an automatic tilting constant speed casting device is disclosed in this embodiment of the invention, including a casting ladle 1, a pouring cup 2, a slide rail 3, and a floating guide 4. The center of mass of the casting ladle 1 after being hinged to the floating guide 4 is located on one side of its spout 11. The top of the pouring cup 2 has an inlet 21, and the bottom of the pouring cup 2 has a pouring gate 22. The spout 11 extends into the inlet 21. The slide rail 3 is horizontally fixed to the inner wall of the pouring cup 2 near the bottom. The floating guide 4 is obliquely distributed inside the pouring cup 2, and the top of the floating guide 4 is hinged to the bottom of the spout 1, and the bottom of the floating guide 4 is placed on the slide rail 3 and slidably connected to it. This invention features a power-free (or low-power) and splash-free process. Firstly, the distribution of the ladle's center of gravity causes it to automatically tilt towards the spout 11, pouring molten iron into the casting cup 2. The casting process requires no external power, achieving energy saving and carbon reduction. Secondly, during casting, the floating guide fluid 4 continuously moves horizontally along with the ladle, minimizing splashing, reducing secondary oxidation, and resulting in high-quality products. This invention is particularly suitable for intermittent casting applications, such as the casting of ferroalloys and manganese ingots.

[0016] Specifically, the casting ladle 1 includes a casting ladle body 12, a turbine 13, a servo motor, and a worm gear 14. The turbine 13 is sleeved and fixed on the trunnion 121 of the casting ladle body 12. The servo motor is independently mounted on a support outside the casting ladle body 12. The worm gear 14 is connected to the output shaft of the servo motor via a coupling, and the worm gear 14 is meshed with the turbine 13. The servo motor driving the worm gear 14 in this invention is for control purposes, not for driving the casting ladle 1 to rotate. The driving power mainly relies on the center of mass distribution of the casting ladle 1 itself, and the power for control is very small.

[0017] To further optimize the technical solution of the present invention, the casting ladle 1 also includes an angular profile plate 15. One corner of the angular profile plate 15 is fixed to the casting ladle body 12 at the ladle nozzle 11, and the other corner is in close contact with the ladle wall. The bottom of the corner and the refractory material layer 122 of the casting ladle body 12 form an iron passage 123 (creating a channel with minimal cross-sectional change for constant current output). On the one hand, during the working process, the slag floats lightly on the molten iron and is blocked by the angular profile plate 15, while the heavier molten iron preferentially passes through the iron passage 123, thus separating the slag and iron. On the other hand, it protects the ladle nozzle 11, greatly reduces heat loss due to thermal radiation, and avoids the molten iron from being oxidized by air and solidifying at the ladle nozzle 11.

[0018] Specifically, the inner cavity size of the floating guide fluid 4 is larger than the inner cavity size of the nozzle 11.

[0019] Specifically, the outer shell of the pouring cup 2 includes a steel shell 23 and a refractory material layer 24 covering the inside of the steel shell 23 to achieve the purpose of heat preservation.

[0020] The working process of this invention is as follows: 1) The floating guide fluid 4 is placed at an angle in the pouring cup 2, and the bottom end of the floating guide fluid 4 is placed on the slide rail 3; 2) Molten iron (alloy liquid) is poured into the casting ladle 1; 3) The servo motor speed is set; 4) The servo motor start signal is input; 5) Automatic casting without power begins; 6) After casting is completed, the floating guide fluid 4 is lifted off for cleaning and maintenance; 7) The servo motor is given a reverse signal, and the casting ladle 1 is automatically reset.

[0021] The working principle of this invention is as follows: After molten iron is poured into the casting ladle, the center of mass of the casting ladle 1 is always located on the side of the ladle spout 11 (molten iron outlet). At this time, the casting ladle 1 is subjected to the braking force of the stationary worm gear 14, and the casting ladle 1 will not rotate. When a signal is input to the servo motor, the servo motor rotates slowly at the set speed, that is, the braking force is released, and the casting ladle 1 rotates automatically. The liquid is slowly and uniformly output from the ladle spout 11 and poured into the floating guide fluid 4. During this process, the floating guide fluid 4 always follows the casting of the casting ladle 1 and moves horizontally along the slide rail 3. The drop of molten iron is always extremely small or even close to zero, so there is almost no splashing or oxidation of molten iron, the loss of molten iron is small, and the product quality is good. Finally, the molten iron in the floating guide fluid 4 falls into the pouring cup 2 and then flows into the mold from the pouring port 22 of the pouring cup 2.

[0022] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0023] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic tilting constant speed casting device, characterized in that, include: The casting ladle, after being hinged to the floating guide fluid, has its center of mass located on one side of its ladle nozzle; A pouring cup having an inlet at the top and a pouring gate at the bottom; the spout extends into the inlet; A slide rail is horizontally fixed to the inner wall of the pouring cup near the bottom. A floating guide fluid is obliquely distributed inside the pouring cup, and the top end of the floating guide fluid is hinged to the bottom of the spout, while the bottom end of the floating guide fluid is placed on the slide rail.

2. The automatic tilting constant speed casting device according to claim 1, characterized in that, The casting ladle includes a casting ladle body, a turbine, a servo motor, and a worm gear. The turbine is sleeved and fixed on the trunnion of the casting ladle body. The servo motor is mounted on a support outside the casting ladle body. The worm gear is connected to the output shaft of the servo motor through a coupling, and the worm gear is meshed with the turbine.

3. The automatic tilting constant speed casting device according to claim 2, characterized in that, The casting ladle also includes an angular profile plate, one corner of which is fixed to the casting ladle body at the ladle nozzle position, and the other corner is in close contact with the ladle wall. The bottom of the corner forms an iron passage between the bottom of the corner and the refractory material layer of the casting ladle body.

4. An automatic tilting constant speed casting device according to any one of claims 1-3, characterized in that, The inner cavity size of the floating guide fluid is larger than the inner cavity size of the nozzle.

5. The automatic tilting constant speed casting device according to claim 1, characterized in that, The outer shell of the pouring cup includes a steel shell and a refractory material layer covering the inside of the steel shell.

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