Safety flow control device for molten aluminum launder

Abstract

The utility model discloses a molten aluminum launder safety flow control device which comprises a support, a molten aluminum launder, an air cylinder, a connecting rod and a valve plate, the molten aluminum launder penetrates through the bottom of the support, one end of the molten aluminum launder is communicated with an aluminum outlet of a mixing furnace, and the other end of the molten aluminum launder is communicated with a casting launder. A cylinder body of the cylinder is fixed at the top end of the bracket, and the output end of the cylinder faces the cavity of the molten aluminum launder; one end of the connecting rod is fixed with a piston rod of the cylinder; the top end face of the valve plate is fixed to the other end face of the connecting rod, and the shape of the valve plate is matched with the cavity of the molten aluminum launder. The air cylinder controls the valve plate to move up and down to intercept molten aluminum in the molten aluminum launder, the intercepted molten aluminum can be recycled, and safety accidents caused by the fact that the high-temperature molten aluminum is left to other portions are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum ingot furnace manufacturing equipment, and more specifically, to a safety flow control device for an aluminum liquid chute. Background Art

[0002] At present, the casting process of the domestic recycled aluminum production system is to put the recycled waste aluminum into a melting furnace for melting, and then the aluminum liquid flows from the melting furnace into a holding furnace for degassing, slag removal, standing and other refining processes. Finally, the aluminum liquid in the holding furnace is transported to an aluminum ingot casting machine through a chute for casting. The aluminum discharging chute is an important component used in the casting process of aluminum and its alloys. It is mostly installed on the aluminum discharging port of a melting furnace (mixing furnace) and communicates with the casting chute, and is used to flow the aluminum liquid in the furnace through the aluminum discharging chute into the casting chute, and then into the subsequent casting equipment for product production.

[0003] Due to the wide application of aluminum and aluminum alloy materials products, high requirements are placed on the quality of the front-end cast-rolled aluminum. First, at present, the country attaches great importance to work safety, especially in a high-temperature environment, the safety of operators is of utmost importance. At present, quite a number of aluminum factories control the aluminum liquid flow and the height of the aluminum liquid surface at the front end of the cast-rolled aluminum plate manually. Moreover, the personnel must work in shifts and regularly check the change of the aluminum liquid surface height, which has a certain risk.

[0004] Now, in the casting process, melting aluminum furnace enterprises all adopt the work of manually observing the aluminum liquid flow and manually operating the emergency discharge of aluminum liquid. It is not easy for personnel to operate, and the risk coefficient is relatively high. In severe cases, scalding or even explosion accidents may occur.

[0005] Therefore, how to provide a safety flow control device for an aluminum liquid chute that can automatically monitor and intercept and discharge aluminum for the aluminum liquid chute, and improve the monitoring and safety performance in the process of melting aluminum and casting ingots, is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0006] In view of this, the utility model provides a safety flow control device for an aluminum liquid chute, aiming to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A safety flow control device for an aluminum liquid chute, comprising:

[0009] A bracket,

[0010] An aluminum liquid chute, the aluminum liquid chute penetrates through the bottom of the bracket, one end of which communicates with the aluminum discharging port of the mixing furnace, and the other end communicates with the casting chute;

[0011] A cylinder, the cylinder body of the cylinder is fixed at the top end of the bracket, and its output end faces the cavity of the aluminum liquid chute;

[0012] A connecting rod, which is arranged perpendicular to the flowing direction of the molten aluminum, and one end of which is fixed to the piston rod of the cylinder;

[0013] A valve plate, the top surface of which is fixed to the end surface of the other end of the connecting rod, and the shape of the valve plate is adapted to the cavity of the molten aluminum flow groove.

[0014] The beneficial effect of the above technical solution is that when the liquid level of the molten aluminum at the end of the casting chute exceeds the limit value, the cylinder is started, the piston rod extends, the electric valve plate moves downward, and finally the valve plate completely falls into the cavity of the molten aluminum flow groove to cut off the molten aluminum, and the molten aluminum will not continue to flow into the casting chute, ensuring the quality of the aluminum ingot casting.

[0015] Preferably, an overflow chute is further included. The overflow chute has a through hole penetrating its top surface and bottom surface. The overflow chute is fixed to the outer side wall of the molten aluminum flow chute. Overflow ports are provided at the top ends of the two side walls of the overflow chute opposite to the molten aluminum flow chute. The bottom end of the overflow chute is communicated with a molten aluminum collection box. After the valve plate cuts off the molten aluminum flow chute, the molten aluminum continues to flow out from the aluminum outlet of the mixing furnace. At this time, the liquid level of the molten aluminum between the molten aluminum flow chute and the valve plate continues to rise. When the height of the molten aluminum reaches the overflow port, it will flow into the overflow chute, and the molten aluminum in the overflow chute flows into the molten aluminum collection box through the through hole at the bottom end for recycling, preventing the molten aluminum from overflowing from the molten aluminum flow chute and causing scalding or even explosion accidents.

[0016] Preferably, a liquid level detector is further included, and the liquid level detector is fixed at the end of the casting chute to detect the height of the molten aluminum liquid level.

[0017] Preferably, the air cavity of the cylinder is communicated with an air control cabinet through an air path, and the air control cabinet is electrically connected to the liquid level detector. When the liquid level detector detects that the liquid level height of the molten aluminum at the end of the casting chute exceeds the limit, it feeds back a signal to the air control cabinet, and the air control cabinet controls the cylinder to start to intercept the molten aluminum in the molten aluminum flow chute, realizing automatic control.

[0018] Preferably, a locking cylinder is further included. The cylinder body of the locking cylinder is fixed to the end surface of the output end of the cylinder. The inner cavity of the locking cylinder penetrates through both ends thereof and is correspondingly arranged with the inner cavity of the cylinder. Both the piston rod of the cylinder and the end of the connecting rod away from the valve plate are inserted into the inner cavity of the locking cylinder and fastened by screw threads. When a special situation such as instantaneous power failure or air cut-off occurs, the locking cylinder will be locked without air supply. At this time, both the connecting rod and the piston rod are locked in the inner cavity of the locking cylinder, preventing the piston rod from extending due to the action of external gravity during the normal production of aluminum ingots.

[0019] Preferably, a mounting plate is fixed to the top end of the bracket. The panel of the mounting plate is arranged perpendicular to the axis of the cylinder. A cylinder support is fixed on the panel of the mounting plate, and the cylinder is clamped on the cylinder support. The cylinder is fixed to the top end of the bracket through the mounting plate and the cylinder support, and the cylinder support can clamp the cylinder to ensure the stability of the cylinder during operation.

[0020] Preferably, a guide plate is fixed to the middle part of the bracket. The guide plate is arranged parallel to the mounting plate. A guide seat is fixed on the panel of the guide plate. A guide groove is formed on one side of the guide seat. The connecting rod passes through the guide groove and its outer wall is slidably connected to the groove side wall of the guide groove. The guide seat can restrict the degree of freedom of movement of the connecting rod to ensure that it always moves vertically up and down perpendicular to the flow direction of the molten aluminum.

[0021] Preferably, a connecting fork seat is fixed to the end of the connecting rod away from the cylinder. The top side wall of the valve plate is fastened to the connecting fork seat by bolts. The valve plate and the connecting rod are detachably connected through the connecting fork seat, which is convenient for replacing and cleaning the valve plate.

[0022] Through the above technical solutions, compared with the prior art, the present invention discloses a safety flow control device for a molten aluminum flow channel. The height of the molten aluminum in the casting flow channel is detected by a liquid level detector, and the cylinder controls the valve plate to move up and down to intercept the molten aluminum in the molten aluminum flow channel. The excess molten aluminum is collected by an overflow tank and a molten aluminum collection box and recycled. Using this device can effectively intercept the excess molten aluminum and recycle it, preventing high-temperature molten aluminum from flowing to other parts and causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0024] Figure 1 It is the front view of the safety flow control device provided by the present invention;

[0025] Figure 2 It is the installation top view of the safety flow control device provided by the present invention;

[0026] Figure 3 It is the working schematic diagram of the safety flow control device provided by the present invention;

[0027] Figure 4 It is the installation top view of multiple safety flow control devices provided by the present invention.

[0028] Among them,

[0029] 1 - Bracket; 2 - Cylinder; 3 - Connecting rod; 4 - Guide seat; 5 - Valve plate; 6 - Molten aluminum chute; 7 - Overflow chute; 8 - Molten aluminum collection tank; 9 - Cylinder support; 10 - Guide plate; 11 - Locking cylinder; 12 - Mounting plate; 13 - Overflow port; 14 - Casting chute. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 3 shown, an embodiment of the present invention discloses a safety flow control device for a molten aluminum chute, which can automatically intercept and recycle the molten aluminum by detecting the molten aluminum in the casting chute, preventing excess molten aluminum from flowing to other parts and causing safety accidents, including:

[0032] Bracket 1,

[0033] Molten aluminum chute 6, the molten aluminum chute 6 penetrates through the bottom of the bracket 1, one end of which is connected to the aluminum outlet of the mixing furnace, and the other end is connected to the casting chute 14;

[0034] Cylinder 2, the cylinder body of the cylinder 2 is fixed at the top of the bracket 1, and its output end faces the cavity of the molten aluminum chute 6;

[0035] Connecting rod 3, the connecting rod 3 is arranged perpendicular to the molten aluminum flow direction and one end of it is fixed to the piston rod of the cylinder 2;

[0036] Valve plate 5, the top surface of the valve plate 5 is fixed to the other end surface of the connecting rod 3, and the shape of the valve plate 5 is adapted to the cavity of the molten aluminum chute 6.

[0037] In this embodiment, an overflow chute 7 is further included. The overflow chute 7 has a through hole penetrating its top and bottom surfaces. The overflow chute 7 is fixed to the outer side wall of the molten aluminum chute 6. Overflow ports 13 are opened at the top ends of the two side walls of the overflow chute 7 opposite to the molten aluminum chute 6. The bottom end of the overflow chute 7 is connected to a molten aluminum collection tank 8.

[0038] When the liquid level at the end of the casting chute reaches the limit value, the cylinder starts to control the piston rod to extend. The piston rod drives the two to move downward. The valve plate moves downward with the connecting rod and enters the cavity of the molten aluminum chute to intercept the molten aluminum. The intercepted molten aluminum will accumulate in the molten aluminum chute and its liquid level will continue to rise. When the liquid level in the molten aluminum chute reaches the overflow port, it will enter the overflow chute, and the molten aluminum entering the overflow chute will flow into the molten aluminum collection tank for recycling and reuse.

[0039] In order to further optimize the above technical solution, a liquid level detector is also included. The liquid level detector is fixed at the end of the casting launder 14 to detect the height of the aluminum liquid level.

[0040] In this embodiment, the liquid level detector is a laser detector installed at the end of the casting trough, and can also be installed near the aluminum inlet of the aluminum casting equipment. The laser detector can detect whether the aluminum liquid height in the casting trough is within a normal range.

[0041] In order to further optimize the above technical solution, the air cavity of the cylinder 2 is connected to the air control cabinet through an air path, and the air control cabinet is electrically connected to the liquid level detector.

[0042] The liquid level detector feeds back the liquid level signal of the aluminum liquid to the air control cabinet. When the liquid level reaches or exceeds the limit value, the air control cabinet will start the cylinder. The cylinder piston rod extends to drive the connecting rod and the valve plate to move downward. The valve plate intercepts the aluminum liquid in the aluminum liquid flow trough and overflows into the overflow trough. It is recycled and reused through the aluminum liquid collection box, realizing the automatic monitoring of molten aluminum casting and the automatic interception of aluminum liquid.

[0043] In order to further optimize the above technical solution, prevent the occurrence of special situations such as instantaneous power outages and gas outages, and prevent the piston rod from slipping out of the cylinder and affecting normal production under special circumstances, it also includes a locking cylinder 11. The cylinder body of the locking cylinder 11 is fixed to the end face of the output end of the cylinder 2. The inner cavity of the locking cylinder 11 runs through both ends and is arranged corresponding to the inner cavity of the cylinder 11. The piston rod of the cylinder 2 and the end of the connecting rod 3 away from the valve plate 5 are inserted into the inner cavity of the locking cylinder 11 and fastened by threads.

[0044] The locking cylinder disclosed in the utility model adopts the existing SMC locking cylinder on the market and is controlled by a solenoid valve. Its working principle is to lock without air and open with air.

[0045] The locking cylinder can ensure that the piston rod does not extend out of the cylinder body when there is no electricity or air. When compressed air is input into the air control port of the locking cylinder, the locking piston will be pushed to overcome the spring force and move, so that the locking hoop is in a released state, and the cylinder piston rod can move freely. When the air control port is exhausted quickly, the spring force causes the locking piston to move quickly in the opposite direction of the input compressed air. The conical surface of the locking piston forces the lever arm to rotate around the fulcrum, and then quickly holds the piston rod through the locking hoop to stop it at a certain position. When the cylinder fails unexpectedly, the locking cylinder can automatically and reliably maintain the locking force, and the piston rod will not extend due to gravity, affecting the normal production of molten aluminum casting.

[0046] To further optimize the above technical solution and ensure the stability of the cylinder during operation, a mounting plate 12 is fixed to the top of the bracket 1. The panel of the mounting plate 12 is arranged perpendicular to the axis of the cylinder 2. A cylinder support 9 is fixed on the panel of the mounting plate 12, and the cylinder 2 is snap-connected to the cylinder support 9.

[0047] To further optimize the above technical solution and restrict the degrees of freedom of the connecting rod in the up and down movement, a guide plate 10 is fixed to the middle of the bracket 1. The guide plate 10 is arranged parallel to the mounting plate 12. A guide seat 4 is fixed on the panel of the guide plate 10. A guide groove is provided on one side of the guide seat 4. The connecting rod 3 passes through the guide groove and its outer wall is slidably connected to the groove side wall of the guide groove.

[0048] To further optimize the above technical solution and facilitate the replacement and cleaning of the valve plate, a connecting fork seat is fixed to the end of the connecting rod 3 away from the cylinder 2. The top side wall of the valve plate 5 is fastened to the connecting fork seat by bolts.

[0049] As Figure 4 shown, usually a 40-ton mixing furnace has at most three tapping openings, and each tapping opening needs to be equipped with a safety flow control device, a total of three sets. For easy control and maintenance, an air control cabinet is used to complete this work.

[0050] The molten aluminum flow troughs of the three tapping openings are connected to the same casting flow trough.

[0051] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safety flow control device for aluminum liquid flow trough, characterized in that: include: Bracket (1), An aluminum liquid flow trough (6), wherein the aluminum liquid flow trough (6) runs through the bottom of the bracket (1), one end of which is connected to the aluminum outlet of the mixing furnace, and the other end of which is connected to the casting flow trough (14); A cylinder (2), wherein the cylinder body of the cylinder (2) is fixed to the top end of the bracket (1), and the output end of the cylinder (2) faces the groove cavity of the aluminum liquid flow groove (6); A connecting rod (3), the connecting rod (3) being arranged perpendicular to the flow direction of the aluminum liquid and having one end fixed to the piston rod of the cylinder (2); A valve plate (5), the top end surface of the valve plate (5) is fixed to the other end surface of the connecting rod (3), and the shape of the valve plate (5) is adapted to the groove cavity of the aluminum liquid flow groove (6).

2. The aluminum liquid flow trough safety flow control device according to claim 1, characterized in that: It also includes an overflow trough (7), the overflow trough (7) having a through hole penetrating the top and bottom surfaces thereof, the overflow trough (7) being fixed to the outer wall of the aluminum liquid flow trough (6), the top ends of the two side walls of the overflow trough (7) opposite to the aluminum liquid flow trough (6) being provided with overflow ports (13), and the bottom end of the overflow trough (7) being connected to an aluminum liquid collection box (8).

3. The aluminum liquid flow trough safety flow control device according to claim 1, characterized in that: It also comprises a liquid level detector, which is fixed at the end of the casting launder (14) to detect the height of the aluminum liquid level.

4. The aluminum liquid flow trough safety flow control device according to claim 3, characterized in that: The air cavity of the air cylinder (2) is connected to an air control cabinet via an air path, and the air control cabinet is electrically connected to the liquid level detector.

5. The aluminum liquid flow trough safety flow control device according to claim 1, characterized in that: It also includes a locking cylinder (11), the cylinder body of the locking cylinder (11) is fixed to the end face of the output end of the cylinder (2), the inner cavity of the locking cylinder (11) passes through both ends thereof and is arranged corresponding to the inner cavity of the cylinder (2), and the piston rod of the cylinder (2) and the end of the connecting rod (3) away from the valve plate (5) are both inserted into the inner cavity of the locking cylinder (11) and fastened by threads.

6. The aluminum liquid flow trough safety flow control device according to claim 1, characterized in that: A mounting plate (12) is fixed to the top of the bracket (1), the panel of the mounting plate (12) is arranged perpendicular to the axis of the cylinder (2), a cylinder support (9) is fixed on the panel of the mounting plate (12), and the cylinder (2) is clamped on the cylinder support (9).

7. The aluminum liquid flow trough safety flow control device according to claim 6, characterized in that: A guide plate (10) is fixed in the middle of the bracket (1), and the guide plate (10) is arranged parallel to the mounting plate (12). A guide seat (4) is fixed on the panel of the guide plate (10), and a guide groove is provided on one side of the guide seat (4). The connecting rod (3) passes through the guide groove and its outer wall is slidably connected to the groove side wall of the guide groove.

8. The aluminum liquid flow trough safety flow control device according to claim 1, characterized in that: A connecting fork seat is fixed to one end of the connecting rod (3) away from the cylinder (2), and the top end side wall of the valve plate (5) is fastened to the connecting fork seat by bolts.

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