Molten aluminum flow control device for continuous casting of aluminum ingots

Abstract

The utility model relates to a molten aluminum flow control device for continuous casting of aluminum ingots, which belongs to the technical field of flow control devices and comprises a lower fixing frame, an upper fixing frame, a first lifting mechanism, a second lifting mechanism and a plunger, a molten aluminum plugging block is fixed at the bottom end of the lower fixing frame, a molten aluminum flow hole is arranged on the molten aluminum plugging block, and a through hole is arranged at the top end of the lower fixing frame; the upper fixing frame is fixed at the top end of the lower fixing frame corresponding to the upper part of the through hole; the first lifting mechanism is fixed to the upper fixing frame, and the lifting end of the first lifting mechanism movably penetrates through the penetrating hole and extends into the lower fixing frame. The second lifting mechanism is located in the lower fixing frame and fixed to the lifting end of the first lifting mechanism. The plunger is fixed to the lifting end of the second lifting mechanism and can be inserted into the molten aluminum flow hole in a matched mode, and the molten aluminum flow hole is blocked or opened along with reciprocating movement of the lifting end of the second lifting mechanism. The lifting end of the second lifting mechanism reciprocates, so that the plunger can penetrate through the molten aluminum flow hole, the molten aluminum flow is prevented from being influenced by aluminum slag, and the control precision of the molten aluminum flow is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow control devices, in particular to an aluminum liquid flow control device for continuous casting of aluminum ingots. Background Art

[0002] In the continuous casting production of aluminum ingots, the height of the aluminum liquid in the mold is the decisive parameter that determines whether the weight of the aluminum ingot meets the standard after forming (the quality index of aluminum ingots is 20KG plus or minus 1.5KG, and 25KG plus or minus 2KG).

[0003] This weight error is reflected in the height measurement and control accuracy of the aluminum liquid. The height control error is plus or minus 4 mm and plus or minus 5 mm. Automatic flow control to adjust the flow of aluminum liquid will greatly reduce the number of unqualified finished aluminum ingots, so as to avoid discovering that the quality of the aluminum stack is unqualified after the aluminum ingots are stacked. The current flow control method is a manual adjustment control device, which requires the operator to adjust the flow control device according to the size of the finished aluminum ingot to achieve the purpose of controlling the size of the aluminum ingot; however, the above manual flow control accuracy is low, and aluminum slag is often accumulated at the aluminum liquid flow hole, causing the flow control device to fail.

[0004] Therefore, how to design an aluminum liquid flow control device for continuous casting of aluminum ingots that has a simple structure, is easy to operate, has precise flow control, and is not prone to failure is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model provides an aluminum liquid flow control device for continuous casting of aluminum ingots, which solves the technical problems of low flow control accuracy and easy failure of the existing aluminum liquid flow control device.

[0006] The utility model solves the above technical problems with the following technical solutions: an aluminum liquid flow control device for continuous casting of aluminum ingots, comprising: a lower fixing frame, an upper fixing frame, a first lifting mechanism, a second lifting mechanism and a plunger,

[0007] An aluminum liquid blocking block is fixed to the bottom end of the lower fixed frame and an aluminum liquid flow hole is provided on the aluminum liquid blocking block, and a through hole is provided on the top of the lower fixed frame; the upper fixed frame is fixed to the top of the lower fixed frame corresponding to the through hole; the first lifting mechanism is fixed to the upper fixed frame and its lifting end reciprocates along the height direction of the upper fixed frame, and the lifting end of the first lifting mechanism moves through the through hole and extends into the lower fixed frame; the second lifting mechanism is located in the lower fixed frame and fixed on the lifting end of the first lifting mechanism, and the lifting end of the second lifting mechanism reciprocates along the height direction of the lower fixed frame; the plunger is located in the lower fixed frame and fixed on the lifting end of the second lifting mechanism, and the plunger can be adapted to be inserted into the aluminum liquid flow hole and block or open the aluminum liquid flow hole as the lifting end of the second lifting mechanism reciprocates.

[0008] The beneficial effects of the utility model are:

[0009] 1. First, use the lifting end of the first lifting mechanism to quickly lift the second lifting mechanism and the plunger, and then use the lifting end of the second lifting mechanism to slowly lift the plunger, which can improve the flow control accuracy of aluminum liquid and meet the weight requirements of aluminum ingot casting;

[0010] 2. When aluminum slag accumulates in the aluminum liquid flow hole, the lifting end of the second lifting mechanism can be reciprocated to allow the plunger to penetrate the aluminum liquid flow hole, thereby preventing the aluminum slag from affecting the aluminum liquid flow rate and improving the aluminum liquid flow rate control accuracy.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the first lifting mechanism includes a servo motor, a lead screw, a slider and a lifting frame, the servo motor is fixed on the upper fixed frame and its output shaft rotates with the height of the upper fixed frame as the axis; the lead screw is located in the upper fixed frame and its top end is coaxially fixed on the output shaft of the servo motor; the slider is provided with a threaded hole and is threadedly connected to the lead screw; the lifting frame is the lifting end of the first lifting mechanism, the lifting frame slides in the through hole along the height direction of the upper fixed frame and the lower fixed frame and is fixed on the slider; the second lifting mechanism is fixed in the lifting frame.

[0013] Furthermore, the second lifting mechanism comprises a cylinder, which is fixed in the lifting frame and whose piston rod reciprocates along the height direction of the lower fixed frame; the top end of the plunger is coaxially fixed to the bottom end of the piston rod of the cylinder.

[0014] Furthermore, it also includes a heat insulation plate, which is located below the second lifting mechanism and fixed in the lower fixing frame along a height direction perpendicular to the lower fixing frame, and a through hole is provided in the middle of the heat insulation plate; the plunger moves through the through hole.

[0015] Furthermore, by fixing the heat insulation board in the lower fixing frame corresponding to the lower part of the second lifting mechanism, it is possible to prevent the high temperature of the aluminum liquid from affecting the performance and service life of the second lifting mechanism and the first lifting mechanism.

[0016] Furthermore, it also includes an upper magnetic proximity switch and a lower magnetic proximity switch, which are fixed on the lower fixing frame at intervals along the height direction of the lower fixing frame; the cylinder is a magnetic cylinder and can correspond to the upper magnetic proximity switch and the lower magnetic proximity switch respectively.

[0017] A further beneficial effect of adopting the above method is that the magnetic cylinder is fully extended during normal control, and the upper magnetic proximity switch is normal. When the magnetic cylinder is compressed, the state of the upper magnetic proximity switch changes, indicating that the movement of the plunger encounters greater resistance and cannot be controlled to run to the required position for controlling the flow, resulting in flow control failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of a front view of an aluminum liquid flow control device for continuous casting of aluminum ingots according to the utility model;

[0019] Figure 2 The utility model is a schematic diagram of the internal structure of a side view of an aluminum liquid flow control device for continuous casting of aluminum ingots.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Lower fixed frame, 2. Upper fixed frame, 3. First lifting mechanism, 31. Servo motor, 32. Lever, 33. Slider, 34. Lifting frame, 4. Second lifting mechanism, 5. Heat insulation board, 6. Plunger. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] like Figure 1 As shown, an aluminum liquid flow control device for continuous casting of aluminum ingots comprises: a lower fixing frame 1, an upper fixing frame 2, a first lifting mechanism 3, a second lifting mechanism 4 and a plunger 6,

[0024] An aluminum liquid block is fixed to the bottom end of the lower fixed frame 1 and an aluminum liquid block is provided on the aluminum liquid block, and a through hole is provided at the top of the lower fixed frame 1; the upper fixed frame 2 is fixed to the top of the lower fixed frame 1 above the corresponding through hole; the first lifting mechanism 3 is fixed on the upper fixed frame 2 and its lifting end reciprocates along the height direction of the upper fixed frame 2, and the lifting end of the first lifting mechanism 3 moves through the through hole and extends into the lower fixed frame 1; the second lifting mechanism 4 is located in the lower fixed frame 1 and fixed on the lifting end of the first lifting mechanism 3, and the lifting end of the second lifting mechanism 4 reciprocates along the height direction of the lower fixed frame 1; the plunger 6 is located in the lower fixed frame 1 and fixed at the lifting end of the second lifting mechanism 4, and the plunger 6 can be adapted to be inserted into the aluminum liquid flow hole and block or open the aluminum liquid flow hole as the lifting end of the second lifting mechanism 4 reciprocates.

[0025] In some specific embodiments, the first lifting mechanism 3 may include a servo motor 31, a lead screw 32, a slider 33 and a lifting frame 34. The servo motor 31 is fixed on the upper fixed frame 2 and its output shaft rotates about the height of the upper fixed frame 2; the lead screw 32 is located in the upper fixed frame 2 and its top end is coaxially fixed on the output shaft of the servo motor 31; the slider 33 is provided with a threaded hole and is threadedly connected to the lead screw 32; the lifting frame 34 is the lifting end of the first lifting mechanism 3, and the lifting frame 34 slides in the through hole along the height direction of the upper fixed frame 2 and the lower fixed frame 1 and is fixed on the slider 33; the second lifting mechanism 4 is fixed in the lifting frame 34.

[0026] In some specific embodiments, the second lifting mechanism 4 may include a cylinder 41, which is fixed in the lifting frame 34 and whose piston rod reciprocates along the height direction of the lower fixed frame 1; the top end of the plunger 6 is coaxially fixed to the bottom end of the piston rod of the cylinder 41.

[0027] Specifically, the air cylinder 41 is replaced by an oil cylinder.

[0028] In some specific embodiments, a heat insulation board 5 may be further included. The heat insulation board is located below the second lifting mechanism 4 and is fixed in the lower fixing frame 1 along the height direction vertical to the lower fixing frame 1. A through hole is provided in the middle of the heat insulation board; the plunger 6 moves through the through hole.

[0029] In some specific embodiments, an upper magnetic proximity switch and a lower magnetic proximity switch may also be included, and the upper magnetic proximity switch and the lower magnetic proximity switch are fixed on the lower fixed frame 1 at intervals along the height direction of the lower fixed frame 1; the cylinder 41 is a magnetic cylinder and may correspond to the upper magnetic proximity switch and the lower magnetic proximity switch respectively.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A molten aluminum flow control device for continuous casting of aluminum ingots, characterized in that: include: A lower fixing frame (1), wherein a molten aluminum block is fixed at the bottom end of the lower fixing frame (1) and an aluminum molten aluminum block is provided with an aluminum molten aluminum flow hole, and a through hole is provided at the top end of the lower fixing frame (1); An upper fixing frame (2), the upper fixing frame (2) being fixed on the top of the lower fixing frame (1) corresponding to the upper side of the through hole; A first lifting mechanism (3), the first lifting mechanism (3) is fixed on the upper fixing frame (2) and its lifting end reciprocates along the height direction of the upper fixing frame (2), and the lifting end of the first lifting mechanism (3) moves through the through hole and extends into the lower fixing frame (1); A second lifting mechanism (4), the second lifting mechanism (4) is located in the lower fixed frame (1) and fixed on the lifting end of the first lifting mechanism (3), and the lifting end of the second lifting mechanism (4) reciprocates along the height direction of the lower fixed frame (1); A plunger (6), the plunger (6) is located in the lower fixed frame (1) and fixed to the lifting end of the second lifting mechanism (4), the plunger (6) can be adapted to be inserted into the aluminum liquid flow hole and block or open the aluminum liquid flow hole as the lifting end of the second lifting mechanism (4) moves back and forth.

2. The aluminum liquid flow control device for continuous casting of aluminum ingots according to claim 1, characterized in that: The first lifting mechanism (3) comprises a servo motor (31), a lead screw (32), a slider (33) and a lifting frame (34); the servo motor (31) is fixed on the upper fixed frame (2) and its output shaft rotates with the height of the upper fixed frame (2) as the axis; the lead screw (32) is located in the upper fixed frame (2) and its top end is coaxially fixed on the output shaft of the servo motor (31); the slider (33) is provided with a threaded hole and is threadedly connected to the lead screw (32); the lifting frame (34) is the lifting end of the first lifting mechanism (3), the lifting frame (34) slides in the through hole along the height direction of the upper fixed frame (2) and the lower fixed frame (1) and is fixed on the slider (33); the second lifting mechanism (4) is fixed in the lifting frame (34).

3. The aluminum liquid flow control device for continuous casting of aluminum ingots according to claim 2, characterized in that: The second lifting mechanism (4) comprises a cylinder (41), the cylinder (41) is fixed in the lifting frame (34) and its piston rod reciprocates along the height direction of the lower fixed frame (1); the top end of the plunger (6) is coaxially fixed to the bottom end of the piston rod of the cylinder (41).

4. The aluminum liquid flow control device for continuous casting of aluminum ingots according to claim 3, characterized in that: The air cylinder (41) is replaced by an oil cylinder.

5. The aluminum liquid flow control device for continuous casting of aluminum ingots according to claim 1, characterized in that: It also includes a heat insulation plate (5), which is located below the second lifting mechanism (4) and is fixed inside the lower fixing frame (1) in a height direction perpendicular to the lower fixing frame (1), and a through hole is provided in the middle of the heat insulation plate; the plunger (6) movably passes through the through hole.

6. The aluminum liquid flow control device for continuous casting of aluminum ingots according to claim 3, characterized in that: It also comprises an upper magnetic proximity switch and a lower magnetic proximity switch, wherein the upper magnetic proximity switch and the lower magnetic proximity switch are fixed on the lower fixing frame (1) at intervals along the height direction of the lower fixing frame (1); the cylinder (41) is a magnetic cylinder and can correspond to the upper magnetic proximity switch and the lower magnetic proximity switch respectively.

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