Molten metal receiving device

Abstract

The utility model relates to the technical field of metal smelting, in particular to a molten metal receiving device which comprises a receiving hopper, an air guide chamber, an exhaust hole and an air inlet hole. The receiving hopper is of a conical structure with two open ends; the gas guide chamber is arranged in the receiving hopper and is used for storing inert gas; the plurality of exhaust holes are formed in the inner wall of the receiving hopper and are communicated with the air guide chamber, the plurality of exhaust holes are divided into a plurality of groups in the vertical direction, and each group of exhaust holes are annularly distributed around the axis of the receiving hopper; the gas inlet hole is formed in the outer wall of the receiving hopper and is used for introducing inert gas into the gas guide chamber; inert gas enters the gas guide chamber from the gas inlet hole, the inert gas entering the receiving hopper through the plurality of exhaust holes can form a multi-layer gas curtain in the vertical direction, and when a steel ladle pours molten metal into the receiving hopper, the multi-layer gas curtain in the receiving hopper can block the molten metal and splashed liquid drops, so that the liquid drops cannot be splashed out of the receiving hopper; therefore, the anti-splashing purpose is achieved, and the surrounding environment and personnel safety are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal smelting, especially relates to a molten metal receiving device. BACKGROUND

[0002] Continuous casting technology is one of the important processes in the field of modern metal smelting and processing, and is widely used in the production process of steel and other metals. Through the continuous or semi-continuous pouring of molten metal into a crystallizer, the process gradually solidifies to form a solid product with a specific shape, such as slab, round billet and square billet. Compared with the traditional ingot casting process, continuous casting technology greatly improves production efficiency, reduces metal consumption, and improves product quality, so it has been widely promoted in the metallurgical industry.

[0003] However, during the continuous casting process, when the molten metal is poured from the ladle into the tundish, due to the high temperature and fast flow rate, combined with the influence of external environmental factors, the molten metal will fluctuate and easily splash, which not only causes waste of raw materials, but also may cause damage to production equipment and the surrounding environment, and even endanger the safety of operators.

[0004] The information disclosed in this BACKGROUND section is only intended to enhance the understanding of the general background of the present utility model, and should not be considered as recognition or implicit acknowledgement in any form that this information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a kind of molten metal receiving device, to effectively solve the problem in background art.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is: a molten metal receiving device, comprising: a receiving hopper, a gas guide chamber, an exhaust hole and an air inlet hole;

[0007] The receiving hopper is in a conical structure with both ends open.

[0008] The gas guide chamber is arranged inside the receiving hopper and is used to store inert gas.

[0009] A plurality of exhaust holes are arranged on the inner wall of the receiving hopper and are in communication with the gas guide chamber, and the plurality of exhaust holes are divided into multiple groups in the vertical direction, and each group of exhaust holes is distributed in a ring shape around the axis of the receiving hopper.

[0010] The air inlet hole is arranged on the outer wall of the receiving hopper and is in communication with the gas guide chamber, and is used to introduce inert gas into the gas guide chamber.

[0011] Further, the exhaust holes are arranged downwardly inclined towards the axis of the receiving hopper.

[0012] Further, the angle between the exhaust hole and the receiving hopper axis is 60-80°.

[0013] Further, the exhaust hole is an elongated hole structure, and the long side of the elongated hole is perpendicular to the axis of the receiving hopper.

[0014] Further, the elongated hole is one of rectangular, trapezoidal and conical.

[0015] Further, the exhaust holes are of the same size and are uniformly spaced.

[0016] Further, the exhaust holes are of the same size and are uniformly spaced.

[0017] Further, the exhaust holes are of the same size and are uniformly spaced.

[0018] Further, the exhaust holes are of the same size and are uniformly spaced.

[0019] Further, the receiving hopper is tapered by 10-30° on one side.

[0020] The utility model discloses the beneficial effects are: the utility model discloses the inert gas from the air inlet hole into the air guide chamber, and the inert gas in the receiving hopper is formed in the vertical direction multiple layers of air curtain when the ladle pours the metal liquid into the receiving hopper, and multiple layers of air curtain in the receiving hopper can block the metal liquid and the splashing droplet, so that the droplet cannot splash to the receiving hopper, thereby achieving the purpose of preventing splashing, thereby protecting the surrounding environment and personnel safety, and avoiding the harm of metal liquid to equipment and operating personnel. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0022] Figure 1 It is the structure schematic view of metal liquid receiving device;

[0023] Figure 2 It is the sectional view of metal liquid receiving device;

[0024] Figure 3 It is the local enlarged view of A in Figure 2 ​

[0025] Figure 4 Schematic view of the first embodiment for the arrangement of exhaust holes;

[0026] Figure 5 Schematic view of the second embodiment for the arrangement of exhaust holes;

[0027] Figure 6 Schematic view of the third embodiment for the arrangement of exhaust holes.

[0028] Reference numerals: 1, receiving hopper; 2, gas guide chamber; 3, exhaust hole; 4, air inlet hole; 5, air inlet pipe; 6, regulating valve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be apparently 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 of the present application.

[0030] In the description of the present application, it should be noted that the orientation or position relationship indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] As shown in the drawings: a molten metal receiving device, comprising: a receiving hopper 1, a gas guide chamber 2, an exhaust hole 3 and an air inlet hole 4; Figures 1 to 6

[0033] The receiving hopper 1 is in a conical structure with both ends open; in this embodiment, the receiving hopper 1 is fixed at the top of a storage device or a purification device;

[0034] The gas guide chamber 2 is arranged inside the receiving hopper 1 and is used to store inert gas;

[0035] ​A plurality of exhaust holes 3 are arranged on the inner wall of the receiving hopper 1 and communicate with the air guide chamber 2, and the plurality of exhaust holes 3 are divided into a plurality of groups in the vertical direction, and each group of exhaust holes 3 is distributed in a ring shape around the axis of the receiving hopper 1;

[0036] An air inlet hole 4 is arranged on the outer wall of the receiving hopper 1 and communicates with the air guide chamber 2, and is used to guide inert gas into the air guide chamber 2.

[0037] The inert gas enters the air guide chamber 2 from the air inlet hole 4, and the inert gas entering the receiving hopper 1 through the plurality of exhaust holes 3 can form a plurality of layers of air curtains in the vertical direction. When the ladle pours the molten metal into the receiving hopper 1, the plurality of layers of air curtains in the receiving hopper 1 will block the molten metal and the splashed droplets, so that the droplets cannot splash out of the receiving hopper 1, thereby achieving the purpose of preventing splashing, thereby protecting the surrounding environment and personnel safety, and avoiding damage to the equipment and operating personnel by the molten metal.

[0038] Since the splashed molten metal is easy to adhere to the surface of the equipment and quickly solidify, it will cause additional cleaning and maintenance work, which may cause equipment failure and increase maintenance difficulty. The device can effectively reduce the splashing phenomenon, thereby reducing the wear and maintenance frequency of the equipment and reducing the maintenance cost.

[0039] By reasonably arranging the air inlet hole 4, the air guide chamber 2 and the exhaust hole 3, an effective splash protection layer is formed by using the air curtain, which has a simple structure and is relatively convenient to operate and maintain. Compared with other splash prevention devices which are complex, the implementation difficulty of this scheme is relatively low and the adaptability is relatively strong.

[0040] As preferred in the above embodiments, as shown in Figure 2 3 The exhaust hole 3 is arranged towards the axis direction of the receiving hopper 1 and inclined downward, specifically, since the exhaust hole 3 is inclined downward, the shape of the air curtain will be an inverted cone, which is convenient for guiding the molten metal by using the air curtain, avoiding its random flow and expanding contact with the inner wall of the receiving hopper 1, and improving the splash prevention effect; and the inclined arrangement of the exhaust hole 3 can avoid the molten metal flowing into the air guide chamber 2 through the exhaust hole 3, avoid the internal part of the air guide chamber 2 being polluted or blocked by the molten metal, thereby ensuring the long-term stable operation of the device and reducing the maintenance cost.

[0041] In the present embodiment, the included angle between the exhaust hole 3 and the axis of the receiving hopper 1 is 60° to 80°, preferably, the included angle between the exhaust hole 3 and the axis of the receiving hopper 1 is 70°. The optimization of the inclined angle of the exhaust hole 3 makes the flow direction of the air curtain be able to guide the molten metal to converge towards the center of the receiving hopper 1, rather than randomly diffuse or directly impact the inner wall of the receiving hopper 1. Especially when the included angle is 70°, the controllability of the molten metal can be improved while considering the flow stability and the coverage range of the air curtain, reducing its contact with the inner wall of the receiving hopper 1 and preventing splashing diffusion.

[0042] ​The exhaust hole 3 is an elongated hole structure, and the long side of the elongated hole is arranged vertically to the axis of the receiving hopper 1. Specifically, the elongated hole structure can make the inert gas uniformly discharged along a larger area, unlike the circular hole which forms a local high flow rate point, thereby reducing turbulence and uneven airflow, improving the stability of the air curtain, and making the air curtain more uniformly cover the inside of the receiving hopper 1. Since the long side is perpendicular to the axis of the receiving hopper 1, the discharged gas can diffuse in a ring-shaped direction, forming a more stable air curtain layer and improving the protection effect on the molten metal.

[0043] In the present embodiment, the elongated hole is one of rectangular, trapezoidal, and conical.

[0044] As shown in Figure 4 , the first embodiment of the arrangement of the exhaust hole 3 is that the exhaust holes 3 are of the same size and are uniformly spaced. Specifically, the design of the same size and uniform spacing of the exhaust holes 3 makes it easier to manufacture and process, but since the flow path of the exhaust hole 3 near the air inlet is short, the exhaust amount of the exhaust hole 3 near the air inlet is relatively sufficient. The flow path gradually increases away from the air inlet, and the exhaust amount of the exhaust hole 3 away from the air inlet is less, resulting in uneven air curtain and affecting the anti-splashing performance. Therefore, the following improvement is made:

[0045] As shown in Figure 5 , the second embodiment of the arrangement of the exhaust hole 3 is that the exhaust holes 3 are of the same size, and the spacing of the exhaust holes 3 on both sides of the air inlet hole 4 gradually decreases away from the air inlet hole 4. Since the spacing of the exhaust holes 3 near the air inlet hole 4 is large, and the spacing of the exhaust holes 3 away from the air inlet hole 4 gradually decreases, the discharged gas is more concentrated in the far end area, thereby maintaining the uniformity of the overall air curtain.

[0046] As shown in Figure 6 , the third embodiment of the arrangement of the exhaust hole 3 is that the spacing of the exhaust holes 3 is the same, and the size of the exhaust holes 3 on both sides of the air inlet hole 4 gradually increases away from the air inlet hole 4. Specifically, the size of the exhaust holes 3 away from the air inlet hole 4 gradually increases, so that the gas flow in the far end area increases, compensating for the problem of large exhaust resistance in the far end, ensuring the continuity and uniformity of the overall air curtain, and improving the protection effect on the molten metal.

[0047] As a preferred embodiment of the above embodiment, the air inlet hole 4 is provided with an air inlet pipe 5, and the air inlet pipe 5 is provided with an adjusting valve 6. Specifically, the adjusting valve 6 can accurately control the flow of inert gas into the air guide chamber 2, ensure the stability of the air curtain, and cover the entire inside of the receiving hopper 1, thereby improving the blocking effect on the splashing of the molten metal. The adjusting valve 6 on the air inlet pipe 5 can prevent unnecessary gas waste and ensure that sufficient airflow is provided only when needed, thereby reducing the consumption of inert gas and reducing operating costs.

[0048] In the embodiment, the taper of the receiving hopper 1 is 10-30° on one side, specifically, the taper is designed so that the molten metal can flow to the bottom of the receiving hopper 1 more easily, thereby improving the collection efficiency and reducing the waste of the molten metal, especially in a high-flow or high-temperature environment, a reasonable taper helps to quickly guide the molten metal to flow to the collection area, thereby improving the efficiency of the device.

[0049] Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A metal liquid receiving device, characterized in that, The utility model relates to a kind of inert gas storage device, including: Receiving hopper, air guide chamber, exhaust hole and air inlet hole; The receiving hopper is in the structure of two ends open cone; The air guide chamber is arranged in the interior of the receiving hopper and is used to store inert gas; Multiple exhaust holes are arranged in the inner wall of the receiving hopper and are communicated with the air guide chamber, and multiple exhaust holes are divided into multiple groups in vertical direction, and each group of exhaust holes is distributed in annular around the axis of the receiving hopper; The air inlet hole is arranged in the outer wall of the receiving hopper and is communicated with the air guide chamber, and is used to guide inert gas to the air guide chamber.

2. The molten metal receiving device of claim 1, wherein The exhaust hole is arranged towards the axis direction of the receiving hopper and is arranged obliquely downwards.

3. The molten metal receiving device of claim 2, wherein The included angle between the exhaust hole and the axis of the receiving hopper is 60° to 80°.

4. The molten metal receiving device of claim 1, wherein The exhaust hole is in the structure of elongated hole, and the long side of the elongated hole is arranged vertically to the axis of the receiving hopper.

5. The molten metal receiving device of claim 4, wherein The elongated hole is one of rectangle, trapezoid and cone.

6. The molten metal receiving device of claim 1 wherein, The size of the exhaust hole is the same, and the exhaust holes are arranged uniformly in interval.

7. The molten metal receiving device of claim 1 wherein, The size of the exhaust hole is the same, and the interval of the exhaust holes located on both sides of the air inlet hole gradually decreases in the direction away from the air inlet hole.

8. The molten metal receiving device of claim 1 wherein, The interval of the exhaust hole is the same, and the size of the exhaust holes located on both sides of the air inlet hole gradually increases in the direction away from the air inlet hole.

9. The molten metal receiving device of claim 1 wherein, The air inlet pipe is arranged on the air inlet hole, and the regulating valve is arranged on the air inlet pipe.

10. The molten metal receiving device of claim 1 wherein, The taper of the receiving hopper is 10 to 30° on single side.

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