Molten metal flow guide structure and casting equipment

Abstract

The utility model provides a molten metal flow guide structure and casting equipment. The molten metal flow guide structure comprises a supporting frame, a middle box body and two flow guide assemblies. The middle box body is arranged on the supporting frame, a bottom opening and two side openings are formed in the middle box body, and first sealing slopes are arranged on the two sides of the side openings; the two flow guide assemblies are arranged on the supporting frame and arranged on the two sides of the middle box body respectively, each flow guide assembly comprises an outer shell and a flow guide groove, the outer shells are arranged on the supporting frame, and second sealing slopes are arranged on the two sides of each outer shell. According to the molten metal flow guide structure, the second sealing inclined face stably presses the first sealing inclined face through the gravity of the flow guide assembly, so that the sealing performance between the outer shell and the middle box body is improved, the possibility of air leakage is avoided, oxidation air suction in the pouring process of a molten copper converter is reduced, and the service life of the molten copper converter is prolonged. The quality of the copper liquid is improved; and the quality defects such as air holes during pipe blank casting are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a molten metal guiding structure and casting equipment. Background Art

[0002] In the current horizontal continuous casting and rolling process for producing air-conditioning copper tubes, most production lines use a separate equipment configuration scheme for the melting furnace and the casting furnace. That is, a set of melting and casting production lines usually uses a casting furnace and two melting furnaces. The two melting furnaces are set on both sides of the casting furnace, and the overall arrangement is symmetrical in a triangular shape. After all the room temperature copper raw materials are added to the melting furnace, high-power electric induction heating is used to melt the copper material and reach the required temperature range. After the temperature is reached, low-power insulation is used and kept for a certain period of time for degassing. After degassing is completed, by controlling the hydraulic system of the melting furnace converter, the two melting furnaces take turns to send a part of the copper liquid in the furnace (about 12 tons in a full furnace) (usually about 2-3 tons / time·hour) through the submerged flow channel and the pouring port into the graphite guide trough, and then pour it into the casting furnace. The copper liquid in the casting furnace maintains a small power through an electromagnetic inductor to maintain a small temperature fluctuation. After the casting copper liquid passes through the casting crystallizer and the casting water cooling system for continuous heat transfer, it is cooled in the first-level cooling shell of the crystallizer, and then further crystallized and formed in the secondary cooler before being pulled out of the secondary cooler. This crystallization and cooling process is carried out continuously to form the required casting billet.

[0003] At present, the casting pipe of the melting furnace is connected to the graphite guide trough, and the graphite guide trough is connected to the casting furnace. An intermediate box is provided on the casting furnace. The outer shell of the graphite guide trough abuts against the intermediate box and is filled with sealing material to achieve sealing, thereby preventing the outside air from contacting the molten liquid in the graphite guide trough. However, there is a gap between the outer shell of the graphite guide trough and the intermediate box. The casting pipe will rotate, and the graphite guide trough will shift accordingly, which will cause the gap between the outer shell and the intermediate box to change, making the filled sealing material easy to loosen, and the sealing is poor and easy to leak. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a molten metal guiding structure and casting equipment.

[0005] An embodiment of the utility model provides a molten metal guide structure, comprising: a support frame, an intermediate box body and two guide components;

[0006] The intermediate box is arranged on the support frame, and is provided with a bottom opening and two side openings. Both sides of the side openings are provided with first sealing inclined surfaces, and the two first sealing inclined surfaces gradually approach each other in a direction from top to bottom;

[0007] The two guide assemblies are arranged on the support frame and are respectively arranged on both sides of the middle box body, wherein the guide assembly includes an outer shell and a guide groove, the outer shell is arranged on the support frame, and second sealing slopes are arranged on both sides of the outer shell, and the two second sealing slopes gradually approach each other in the direction from top to bottom, the outer shell extends into the side opening, the first sealing slope abuts against the second sealing slope, and the guide groove is arranged in the outer shell, the guide groove extends into the middle box body, and extends downwardly at an angle toward the bottom opening.

[0008] In some optional embodiments, a first sealing structure is provided between the first sealing bevel and the second sealing bevel.

[0009] In some optional embodiments, the support frame is provided with an avoidance opening, part of the middle box body is passed through the avoidance opening, a bottom plate is provided at the bottom of the middle box body, the bottom plate is provided at the bottom of the support frame, and the bottom opening is provided on the bottom plate.

[0010] In some optional embodiments, a protruding inclined support portion is formed on the bottom of the outer shell, and the inclined support portion passes through the avoidance opening and then abuts against the top of the bottom plate.

[0011] In some optional embodiments, a sealing gasket is disposed at the bottom of the base plate and is arranged around the bottom opening.

[0012] In some optional embodiments, two support platforms are liftably provided on the support frame, and the outer shell is correspondingly provided on the support platforms.

[0013] In some optional embodiments, a plurality of vertical screw members are provided on the support platform, and the vertical screw members are sequentially passed through the support platform and the support frame, and the vertical screw members are threadedly matched with the support platform or the support frame.

[0014] In some optional embodiments, a box cover is detachably provided on the top of the intermediate box body, a supporting plane is formed on the top of the outer box body, and the box cover abuts against the supporting plane.

[0015] In some optional embodiments, a second sealing structure is provided between the supporting plane and the box cover.

[0016] Another embodiment of the utility model provides a casting device, comprising: a casting furnace and a molten metal guiding structure as described above, wherein the support frame is arranged on the casting furnace.

[0017] Compared with the prior art, the metal liquid guide structure of the utility model utilizes the gravity of the guide component itself to make the second sealing slope stably pressed against the first sealing slope, thereby improving the sealing between the outer shell and the intermediate box body, avoiding the loosening of the first sealing structure, avoiding the possibility of air leakage, reducing the oxidation absorption during the copper liquid converter pouring process, improving the copper liquid quality and reducing the quality defects such as pores generated during the casting of pipe blanks; the sinking structure of the intermediate box body and the outer shell body is improved, so that the internal guide groove can be installed at a larger angle to accelerate the copper liquid converter pouring speed and reduce the copper liquid splashing to form cold copper during pouring; the bottom of the intermediate box body is provided with a sealing gasket for abutting against the casting furnace.

[0018] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a metal liquid guide structure according to an embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of one side of a molten metal guide structure according to an embodiment of the utility model;

[0021] Figure 3 An exploded view of a metal liquid guide structure according to an embodiment of the utility model;

[0022] Figure 4 A cross-sectional view of a molten metal guiding structure according to an embodiment of the utility model;

[0023] Figure 5 This is a diagram of a casting device for a molten metal guide structure according to an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 10. Support frame; 11. Support platform; 12. Vertical threaded member; 20. Intermediate box body; 21. Bottom opening; 22. Side opening; 23. First sealing slope; 24. Bottom plate; 25. Sealing gasket; 26. Box cover; 30. Guide assembly; 31. Outer shell; 32. Guide groove; 33. Second sealing slope; 34. Inclined support portion; 35. Support plane; 36. Upper cover; 37. Bottom shell; 40. Casting furnace; 41. Pouring pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined, and the meaning of "several" is one or more.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1 An embodiment of the utility model provides a molten metal guide structure, including: a support frame 10, an intermediate box 20 and two guide components 30.

[0029] See also Figures 2 to 4 The middle box body 20 is arranged on the support frame 10, and is provided with a bottom opening 21 and two side openings 22. First sealing inclined surfaces 23 are arranged on both sides of the side openings 22, and the two first sealing inclined surfaces 23 gradually approach each other in a direction from top to bottom.

[0030] Two guide components 30 are set on the support frame 10 and are respectively arranged on both sides of the middle box 20, wherein the guide component 30 includes an outer shell 31 and a guide groove 32, the outer shell 31 is set on the support frame 10, and second sealing bevels 33 are set on both sides of the outer shell 31, and the two second sealing bevels 33 gradually approach each other from top to bottom. The outer shell 31 extends into the side opening 22, and the first sealing bevel 23 abuts against the second sealing bevel 33. The mutual adaptation of the first sealing bevel 23 and the second sealing bevel 33 is conducive to avoiding a large gap between the outer shell 31 and the middle box 20. The guide groove 32 is set in the outer shell 31, and the guide groove 32 extends into the middle box 20, and extends downwardly in a direction toward the bottom opening 21. The two first sealing bevels 23 are close to each other in the downward direction. Due to the overall gravity of the guide assembly 30, the outer shell 31 moves downward along the two first sealing bevels 23, so that the outer shell 31 is clamped by the two first sealing bevels 23, so that when the guide groove 32 is offset due to the pouring pipe 41, the outer shell 31 is not easy to shake, which is beneficial to improve the sealing between the outer shell 31 and the intermediate box 20, avoid the possibility of air leakage, reduce the oxidation absorption during the copper liquid converter pouring process, improve the copper liquid quality and reduce the quality defects such as pores generated during casting of pipe blanks.

[0031] In some optional embodiments, a first sealing structure (not shown) is arranged between the first sealing bevel 23 and the second sealing bevel 33. Under the action of gravity of the outer shell 31, the second sealing bevel 33 can stably press the first sealing structure onto the first sealing bevel 23, thereby avoiding loosening of the first sealing structure and improving the sealing between the outer shell 31 and the intermediate box body 20.

[0032] In some optional embodiments, the support frame 10 is provided with an escape opening, part of the intermediate box 20 is passed through the escape opening, a bottom plate 24 is provided at the bottom of the intermediate box 20, the bottom plate 24 is provided at the bottom of the support frame 10, the bottom opening 21 is provided on the bottom plate 24, and the floor can be directly connected to the casting furnace 40 to form a seal. In some optional embodiments, the bottom of the bottom plate 24 is provided with a sealing gasket 25 arranged around the bottom opening 21, the sealing gasket 25 directly abuts against the casting furnace 40, and the sealing gasket 25 improves the sealing between the bottom plate 24 and the casting furnace 40.

[0033] In some optional embodiments, a protruding inclined support portion 34 is formed at the bottom of the outer shell 31, and the inclined support portion 34 passes through the avoidance opening and then abuts against the top of the bottom plate 24. Since the bottom plate 24 of the intermediate box 20 is designed to sink to the bottom of the support frame 10, the outer shell 31 can also sink to the bottom plate 24, so that the maximum height of the interior of the outer shell 31 is increased, and the inclination angle of the internal guide groove 32 relative to the horizontal plane is increased, so that the speed at which the guide groove 32 pours the molten copper into the casting furnace 40 is reduced, and the height difference between the guide groove 32 and the liquid level inside the casting furnace 40 is reduced, which is conducive to reducing the generation of cold copper when pouring, and then correspondingly reducing the frequency of opening the intermediate box 20 for cold copper treatment, thereby avoiding damage to the protective environment formed by the casting furnace 40, the intermediate box 20 and the outer shell 31.

[0034] In some optional embodiments, two support platforms 11 are liftably provided on the support frame 10, and the outer shell 31 is correspondingly provided on the support platforms 11. The height of the outer shell 31 can be adjusted through the support platforms 11 to accurately dock with the pouring pipe 41 of the melting furnace.

[0035] In some optional embodiments, a plurality of vertical threaded members 12 are provided on the support platform 11, and the vertical threaded members 12 are sequentially inserted through the support platform 11 and the support frame 10, and the vertical threaded members 12 are threadedly engaged with the support platform 11 or the support frame 10. When the vertical threaded members 12 are threadedly engaged with the support platform 11, the vertical threaded members 12 are rotationally engaged with the support frame 10, and when the vertical threaded members 12 are rotated, the support platform 11 is driven to rise and fall along the vertical threaded members 12. In order to prevent the support platform 11 from rotating, a threaded seat can be rotatably provided on the support platform 11, and the support platform 11 is threadedly engaged with the vertical threaded members 12 through the threaded seat; when the vertical threaded members 12 are rotationally engaged with the support platform 11, the vertical threaded members 12 are threadedly engaged with the support frame 10, and when the vertical threaded members 12 are rotated, the support platform 11 is driven to rise and fall relative to the support frame 10 together with the vertical threaded members 12.

[0036] In some optional embodiments, a box cover 26 is detachably provided on the top of the intermediate box body 20, and a support plane 35 is formed on the top of the outer shell 31. The box cover 26 abuts against the support plane 35, so that the outer shell 31 is pressed against the support frame 10 and the bottom plate 24 by the gravity of the box cover 26, thereby improving the sealing between the outer shell 31 and the intermediate box body 20.

[0037] In some optional embodiments, a second sealing structure (not shown) is provided between the supporting plane 35 and the box cover 26 , so as to improve the sealing performance inside the intermediate box body 20 .

[0038] The specific structures of the first sealing structure and the second sealing structure can be designed according to actual needs. For example, the first sealing structure and the second sealing structure are refractory fiber cotton, and the second sealing slope 33 presses the first sealing structure toward the first sealing slope 23, thereby compacting the first sealing structure and improving the sealing performance. The box cover 26 presses the second sealing structure toward the outer shell 31, thereby compacting the second sealing structure and improving the sealing performance.

[0039] In this embodiment, the outer shell 31 includes an upper cover 36 and a bottom shell 37 . The upper cover 36 and the bottom shell 37 are detachably matched, so that the guide groove 32 inside the outer shell 31 is easily replaced.

[0040] See also Figure 5 The above-mentioned molten metal guide structure can be applied to a casting device, which includes: a casting furnace 40 and a molten metal guide structure as described above, and a support frame 10 is arranged on the casting furnace 40. In this embodiment, the bottom plate 24 is connected to the top of the casting furnace 40 through a sealing gasket 25, the intermediate box 20 is connected to the casting furnace 40 through a bottom opening 21, and the melting furnace is connected to the guide groove 32 through a pouring pipe 41. The copper liquid enters the guide groove 32 through the pouring pipe 41, and then falls into the casting furnace 40 in the guide groove 32.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molten metal guiding structure, characterized in that: include: Support frame, intermediate box and two guide assemblies; The intermediate box is arranged on the support frame, and is provided with a bottom opening and two side openings. Both sides of the side openings are provided with first sealing inclined surfaces, and the two first sealing inclined surfaces gradually approach each other in a direction from top to bottom; The two guide assemblies are arranged on the support frame and are respectively arranged on both sides of the middle box body, wherein the guide assembly includes an outer shell and a guide groove, the outer shell is arranged on the support frame, and second sealing slopes are arranged on both sides of the outer shell, and the two second sealing slopes gradually approach each other in the direction from top to bottom, the outer shell extends into the side opening, the first sealing slope abuts against the second sealing slope, and the guide groove is arranged in the outer shell, the guide groove extends into the middle box body, and extends downwardly at an angle toward the bottom opening.

2. A molten metal guiding structure according to claim 1, characterized in that: A first sealing structure is arranged between the first sealing inclined surface and the second sealing inclined surface.

3. A molten metal guiding structure according to claim 1, characterized in that: The support frame is provided with an escape opening, part of the middle box body is passed through the escape opening, a bottom plate is provided at the bottom of the middle box body, the bottom plate is provided at the bottom of the support frame, and the bottom opening is provided on the bottom plate.

4. A metal liquid guiding structure according to claim 3, characterized in that: A protruding inclined support portion is formed at the bottom of the outer shell, and the inclined support portion passes through the avoidance opening and then abuts against the top of the bottom plate.

5. The metal liquid guiding structure according to claim 3, characterized in that: The bottom of the bottom plate is provided with a sealing gasket arranged around the bottom opening.

6. The metal liquid guiding structure according to claim 1, characterized in that: The support frame is provided with two support platforms which can be raised and lowered, and the outer shell is correspondingly provided on the support platforms.

7. A molten metal guiding structure according to claim 6, characterized in that: A plurality of vertical screw members are arranged on the support platform, and the vertical screw members are sequentially passed through the support platform and the support frame, and the vertical screw members are threadably matched with the support platform or the support frame.

8. A molten metal guiding structure according to any one of claims 1 to 6, characterized in that: A box cover is detachably provided on the top of the intermediate box body, a supporting plane is formed on the top of the outer box body, and the box cover abuts against the supporting plane.

9. A molten metal guiding structure according to claim 8, characterized in that: A second sealing structure is arranged between the supporting plane and the box cover.

10. A casting device, characterized in that: include: A casting furnace and a molten metal guiding structure as described in any one of claims 1 to 9, wherein the support frame is arranged on the casting furnace.

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