Positioning device for molten aluminum outlet plug of smelting furnace

Abstract

The utility model relates to a smelting furnace molten aluminum outlet plug positioning device in the technical field of aluminum smelting, a plug is arranged on a molten aluminum outlet of a smelting furnace in a matched mode, the plug is horizontally arranged right behind the molten aluminum outlet in a pluggable mode, the rear end of the plug is connected with a transmission rod, and the rear end of the transmission rod is connected with an adapter plate capable of moving front and back. A positioning mounting frame is arranged behind the adapter plate, a servo electric cylinder is fixedly mounted behind the middle of the positioning mounting frame, the front end of a telescopic rod of the servo electric cylinder penetrates through the positioning mounting frame to be connected with the adapter plate, guide shafts are arranged on the left side and the right side of the servo electric cylinder respectively, and the two guide shafts penetrate out of the front side and the rear side of the positioning mounting frame in a sliding mode through linear bearings. The front ends of the two guide shafts are connected with the adapter plate, and the rear ends of the two guide shafts are connected through the bridging plate. According to the device, the servo electric cylinder is adopted to replace a hand-cranking screw and a telescopic air cylinder to drive the plug to move more stably, and the release opening degree of the molten aluminum outlet is convenient to control; and the device can be electrically interlocked with a main motor of the ingot casting machine, so that emergency situations can be dealt with more quickly and safely.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum smelting, and particularly relates to a positioning device for a molten aluminum outlet plug of a smelting furnace. Background Art

[0002] Aluminum smelting refers to the production activities of high-temperature smelting and purification of aluminum ore raw materials or recycled scrap aluminum materials and the casting of aluminum ingots. Aluminum ingot casting is the process of evenly casting the molten aluminum (or aluminum liquid) flowing out of the smelting furnace into the forming mold of the ingot casting machine. After cooling and shaping, it is demolded to produce aluminum ingots. The molten aluminum outlet of the smelting furnace needs to be equipped with a plug to control the release and blocking of the molten aluminum. Traditional smelting furnace molten aluminum outlet plugs are mainly manually controlled by hand-cranked screws. When encountering unexpected situations such as unexpected failures of the ingot casting machine mainframe requiring emergency cessation of molten aluminum casting, it is often too late to promptly seal the molten aluminum outlet of the smelting furnace. Once the buffer capacity in the tundish reaches saturation, the molten aluminum will overflow the launder, causing certain safety hazards and economic losses. Existing plug positioning devices are also driven by telescopic cylinders. However, the cylinder's telescopic stroke is difficult to adjust, making it difficult to control the degree of opening of the plug for the molten aluminum outlet. Furthermore, the cylinder's movement is significantly affected by fluctuations in the compressed air source, and the cylinder's piston seal is difficult to adapt to high-temperature working environments for a long time. Therefore, cylinder-driven plugs still suffer from unstable movement, low operational reliability, and a short service life. Therefore, it is necessary to redesign or improve the positioning device for the plug at the molten aluminum outlet of the smelting furnace. Utility Model Content

[0003] In view of the above situation, the utility model provides a positioning device for a plug of molten aluminum outlet of a smelting furnace, which makes the plug action safer and more stable and prolongs the service life of the device.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A smelting furnace aluminum liquid outlet plug positioning device includes a smelting furnace, and a switchable plug is provided on the aluminum liquid outlet on the rear side of the smelting furnace. The aluminum liquid outlet is a conical trumpet structure with a small front and a large rear. The plug is a gyro-shaped solid block structure made of refractory material and adapted to the aluminum liquid outlet. The plug is pluggable and horizontally arranged directly behind the aluminum liquid outlet.

[0006] The rear end of the plug is fixedly connected to a transmission rod, and the rear end of the transmission rod is connected to an adapter plate that can move forward and backward. A positioning mounting frame is provided at the rear of the adapter plate, and a servo electric cylinder is fixedly installed at the rear middle part of the positioning mounting frame. The front end of the telescopic rod of the servo electric cylinder passes through the positioning mounting frame and is connected to the adapter plate. A guide shaft extending in the front and back direction is respectively provided on the left and right sides of the servo electric cylinder. The two guide shafts are slidably passed through the front and back sides of the positioning mounting frame through linear bearings. The front ends of the two guide shafts are connected to the adapter plate, and the rear ends of the two guide shafts are connected to each other through a bridge plate.

[0007] The smelting furnace aluminum liquid outlet plug positioning device also includes an ingot casting machine, which includes a main frame, two circulating chains and a plurality of forming molds. The two circulating chains are rotatably and parallelly wound on the chain tracks on the left and right sides of the main frame. Each forming mold is parallelly bridged between the two circulating chains. The front and rear ends of the main frame are respectively provided with a driving gear and a driven gear for driving the two circulating chains. One end of the wheel shaft of the driving gear is transmission-connected to the main motor of the ingot casting machine.

[0008] Furthermore, the molten aluminum outlet of the smelting furnace is connected to the top of the forming mold of the ingot casting machine through the molten aluminum flow channel and the molten aluminum distribution hub.

[0009] Furthermore, an electric control box is provided on the outside of the smelting furnace, and the servo electric cylinder of the plug and the main motor of the ingot casting machine are electrically connected to the electric control box, and the servo electric cylinder and the main motor of the ingot casting machine are electrically interlocked through the electric control box.

[0010] Furthermore, the left and right sides of the positioning mounting frame are fixedly connected to the rear side wall of the smelting furnace through connecting frames respectively.

[0011] Furthermore, a heat insulation plate is provided between the front end of the servo electric cylinder and the rear side wall of the positioning mounting frame to block heat conduction between the positioning mounting frame and the servo electric cylinder, thereby preventing the servo electric cylinder from overheating.

[0012] The present invention also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, devices or components not limited in the present invention, such as: melting furnace, ingot casting machine, aluminum liquid flow trough, aluminum liquid distribution hub, linear bearings, guide shafts, plugs and servo cylinders, as well as electric control box and its internal control circuit settings, etc., all adopt the existing technology in this field.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model provides a positioning device for the aluminum melt outlet plug of a smelting furnace, which adopts a servo electric cylinder to replace the hand-cranked screw and telescopic cylinder in the prior art to drive the movement of the plug, so that the stop position of the plug can be conveniently controlled, and the size of the release opening of the aluminum melt outlet is controlled, that is, the flow rate of the released aluminum melt is controlled; moreover, the telescopic movement of the plug driven by the servo electric cylinder is more stable, and it has stronger adaptability to high-temperature environments, higher safety, and longer service life; and the servo electric cylinder of the plug can also be electrically interlocked with the main motor of the ingot casting machine. Once the ingot casting machine fails, the servo electric cylinder of the plug can automatically stop the casting of aluminum melt, so that emergency situations can be responded to more quickly and timely, thereby improving the safety of the aluminum ingot casting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the positioning device for the molten aluminum outlet plug of the smelting furnace in the embodiment.

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0019] It should be noted that the terms "up", "down", "front", "back", "left", "right", "inside", "outside", etc. indicating directions or positional relationships are based on the accompanying drawings and are only for the convenience of description.

[0020] Example

[0021] like Figure 1 As shown, a smelting furnace aluminum liquid outlet plug positioning device includes a smelting furnace 1. The smelting furnace belongs to the existing technology in this field and will not be described in detail here.

[0022] The molten aluminum outlet 2 on the rear side of the smelting furnace is equipped with a switchable plug 3. The molten aluminum outlet is a conical trumpet structure with a small front and a large back. The plug is a gyro-shaped solid block structure made of refractory material and adapted to the molten aluminum outlet. The plug is pluggable and horizontally arranged directly behind the molten aluminum outlet.

[0023] A transmission rod 4 is fixedly connected to the rear end of the plug. The rear end of the transmission rod is connected to a transfer plate 5 that can move back and forth. A positioning and mounting frame 6 is provided behind the transfer plate. The left and right sides of the positioning and mounting frame are respectively fixedly connected to the rear side wall of the melting furnace in a "冂" shape through connecting frames 7.

[0024] A servo electric cylinder 8 is fixedly installed behind the middle of the positioning and mounting frame. An insulating board 9 made of asbestos board is also cooperatively padded between the front end of the servo electric cylinder and the rear side wall of the positioning and mounting frame, which is used to prevent the servo electric cylinder from overheating, ensure the stable operation of the servo electric cylinder, improve the reliability of the plug's closing / releasing, and extend the service life of the servo electric cylinder.

[0025] The front end of the telescopic rod 10 of the servo electric cylinder passes through the positioning and mounting frame and is connected to the transfer plate. A guiding shaft 11 extending in the front-rear direction is respectively arranged on the left and right sides of the servo electric cylinder. The two guiding shafts respectively pass through the front and rear sides of the positioning and mounting frame slidably through linear bearings 12, which is used to assist in guiding the telescopic rod of the servo electric cylinder and improve the stability of the servo electric cylinder pushing and pulling the plug through the transmission rod. The front ends of the two guiding shafts are both connected to the transfer plate, and the rear ends of the two guiding shafts are connected to each other through a bridging plate 13. The bridging plate, the transfer plate and the two guiding shafts cooperate to form a square frame structure to ensure the parallelism between the two guiding shafts.

[0026] The positioning device for the aluminum melt outlet plug of the melting furnace further includes an ingot casting machine (not shown in the figure). The ingot casting machine includes a main frame, two circulating chains and a number of forming molds. The two circulating chains are rotatably arranged in parallel around the chain tracks on the left and right sides of the main frame. Each forming mold is bridged in parallel between the two circulating chains. Driving gears for cooperatively driving the two circulating chains are respectively arranged at the front and rear ends of the main frame. One end of the wheel shaft of the driving gear is drivingly connected to the main motor of the ingot casting machine. The aluminum melt outlet of the melting furnace is connected to directly above the forming mold of the ingot casting machine through an aluminum liquid flow trough (not shown in the figure) and an aluminum liquid distribution hub (not shown in the figure), which is used to evenly and accurately pour the aluminum melt into each continuously circulating forming mold of the ingot casting machine.

[0027] The ingot casting machine, the aluminum liquid flow trough and the aluminum liquid distribution hub all belong to the prior art in this field. For example, a sawtooth gate distributor provided in the patent document CN202479446U is not described in detail here.

[0028] An electric control box (not shown in the figure) is provided outside the melting furnace. The servo electric cylinder of the plug and the main motor of the ingot casting machine are both electrically connected to the electric control box. The servo electric cylinder and the main motor of the ingot casting machine are electrically interlocked through the electric control box. Once a fault occurs in the ingot casting machine, the servo electric cylinder of the plug will cut off the aluminum melt pouring in time to respond to emergencies more quickly.

[0029] The electric control box and its internal electric interlock control circuit are both existing technologies, and the specific settings will not be repeated here.

[0030] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the scope of protection of the present invention.

Claims

1. A smelting furnace aluminum molten outlet plug positioning device, comprising a smelting furnace, wherein the aluminum molten outlet at the rear side of the smelting furnace is provided with a switchable plug, characterized in that: The molten aluminum outlet is a conical trumpet structure with a small front and a large rear. The plug is a gyro-shaped solid block structure made of refractory material that is compatible with the molten aluminum outlet. The plug is pluggable and horizontally arranged directly behind the molten aluminum outlet. The rear end of the plug is fixedly connected to a transmission rod, and the rear end of the transmission rod is connected to an adapter plate that can move forward and backward. A positioning mounting frame is provided behind the adapter plate, and a servo electric cylinder is fixedly installed at the rear of the middle part of the positioning mounting frame. The front end of the telescopic rod of the servo electric cylinder passes through the positioning mounting frame and is connected to the adapter plate. A guide shaft extending in the front and rear directions is respectively provided on the left and right sides of the servo electric cylinder. The two guide shafts are each slidably passed through the front and rear sides of the positioning mounting frame through linear bearings. The front ends of the two guide shafts are connected to the adapter plate, and the rear ends of the two guide shafts are connected to each other through a bridge plate.

2. A smelting furnace aluminum molten outlet plug positioning device according to claim 1, characterized in that: It also includes an ingot casting machine, which includes a main frame, two circulating chains and several forming molds. The two circulating chains are rotatably and parallelly wound on the chain tracks on the left and right sides of the main frame. Each forming mold is bridged in parallel between the two circulating chains. The front and rear ends of the main frame are respectively provided with a driving gear and a driven gear for driving the two circulating chains. One end of the axle of the driving gear is connected to the main motor of the ingot casting machine; the aluminum liquid outlet of the smelting furnace is connected to the top of the forming mold of the ingot casting machine through an aluminum liquid flow trough.

3. A smelting furnace aluminum molten outlet plug positioning device according to claim 2, characterized in that: An electric control box is provided on the outside of the smelting furnace, and the servo electric cylinder and the main motor of the ingot casting machine are both electrically connected to the electric control box, and the servo electric cylinder and the main motor of the ingot casting machine are electrically interlocked through the electric control box.

4. The device for positioning a plug for a molten aluminum outlet of a smelting furnace according to claim 1, characterized in that: The left and right sides of the positioning mounting frame are fixedly connected to the rear side wall of the smelting furnace through connecting frames respectively.

5. The smelting furnace aluminum liquid outlet plug positioning device according to claim 1, characterized in that: A heat insulation plate is provided between the front end of the servo electric cylinder and the rear side wall of the positioning mounting frame.

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