A preheating furnace cover plate and a preheating furnace

Abstract

The utility model provides a kind of preheating furnace cover plate and preheating furnace, including cover plate body and movable cover plate;The tail end of the cover plate body is provided with hinged part, for and the rear part of preheating furnace hinged, form flip cover structure;The cover plate body includes metal frame, panel encapsulated on the metal frame and heat insulation layer filled in the inside of panel;The front side and top surface of the cover plate body are provided with through gap, for through anode guide rod;The movable cover plate is the cover plate of the gap shape adaptation, for the closure in the gap of activity.This preheating furnace cover plate can meet the purpose of reducing heat loss, also can meet the convenience requirement of hoisting access anode.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic aluminum technology, specifically to a preheating furnace cover and a preheating furnace. Background Technology

[0002] In the electrolytic aluminum industry, the anode needs to be preheated before it is put into use. The main method of preheating is through thermal radiation.

[0003] Specifically, a preheating furnace will be set up with an open top. The furnace body will be insulated with heat insulation material around the sides and bottom to form a chamber structure with an open top. Heating equipment will be installed at the bottom and / or around the sides to heat the interior of the chamber.

[0004] The reason for the opening at the top is that the entire anode needs to be hoisted into the preheating furnace through a suspension system. The open structure can ensure the convenience of hoisting, but during the preheating process, the open structure will lead to heat loss.

[0005] In order to maximize energy saving and minimize heat loss, it is necessary to modify the existing preheating furnace by adding a suitable cover plate, which can both reduce heat loss and meet the need for convenient hoisting and access to the anode.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a preheating furnace cover and preheating furnace that can both reduce heat loss and facilitate the hoisting and retrieval of anodes.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a preheating furnace cover plate, comprising a cover plate body and a movable cover plate;

[0009] The tail end of the cover plate body is provided with a hinge part for hinged connection with the rear part of the preheating furnace to form a flip cover structure.

[0010] The cover body includes a metal frame, a panel encapsulated on the metal frame, and a heat insulation layer filled inside the panel;

[0011] The front and top surfaces of the cover plate body are provided with through notches for the passage of the anode guide rod;

[0012] The movable cover plate is a cover plate adapted to the shape of the notch, used to movably close the notch.

[0013] Based on the above, the rear end of the notch extends to the center of the top surface of the cover body, and the front end of the notch extends to the bottom of the front side of the cover body, dividing the front side of the cover body into two unconnected segments.

[0014] Based on the above, the lower boundary of the insulation layer extends beyond the lower edge of the cover body.

[0015] Based on the above, the boundary of the insulation layer at the notch extends beyond the edge of the notch.

[0016] Based on the above, the heat insulation layer extending beyond the notch edge is successively wrapped with fire-resistant cloth and a fixing protective layer.

[0017] Based on the above, a lifting ring is installed at the top of the cover body, which serves as a lifting point for the flip-top drive mechanism.

[0018] Based on the above, the notch is L-shaped, and the movable cover plate is L-shaped to fit the notch.

[0019] A preheating furnace includes a furnace body and a preheating furnace cover plate, wherein the tail end of the cover plate body is hinged to the tail end of the furnace body.

[0020] The rear end of the furnace body is provided with a flip-top driving mechanism, which is used to drive the opening and closing of the preheating furnace cover.

[0021] Based on the above, the flip-top driving mechanism includes a winch motor, a vertical frame, a fixed pulley, and a traction rope. The vertical frame is located at the rear of the furnace body, the fixed pulley is installed at the top of the vertical frame, one end of the traction rope is pulled by the winch motor, the middle part passes around the fixed pulley, and the other end is connected to the top surface suspension point of the cover plate body.

[0022] This utility model has substantial features and advancements compared to existing technologies. Specifically, this utility model adds a dedicated cover plate to the open structure of the preheating furnace. The cover plate includes a cover plate body and a movable cover plate. The cover plate body is connected to the preheating furnace in a flip-top manner. The cover plate body has a notch to avoid interference with the movement of the anode guide rod. The movable cover plate is used to close most of the notch space, leaving only a local space for the anode guide rod to pass through. This closes most of the open space of the preheating furnace, which not only provides insulation but also does not affect the suspension and retrieval process of the anode. This satisfies the purpose of reducing heat loss and also meets the need for convenient hoisting and retrieval of the anode. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the preheating furnace cover plate in Embodiment 1 of this utility model.

[0024] Figure 2 This is a cross-sectional view of the preheating furnace cover plate in Embodiment 1 of this utility model.

[0025] Figure 3 This is a front side view of the preheating furnace cover in Embodiment 1 of this utility model.

[0026] Figure 4 This is a top view of the preheating furnace in Embodiment 2 of this utility model.

[0027] Figure 5 This is a side view of the preheating furnace in Embodiment 2 of this utility model.

[0028] Figure 6 This is a front view of the preheating furnace in Embodiment 2 of this utility model.

[0029] In the diagram: 1. Cover plate body; 2. Movable cover plate; 3. Hinge joint; 4. Furnace body; 5. Anode guide rod; 6. Hoist motor; 7. Frame; 8. Fixed pulley; 9. Traction rope; 11. Metal frame; 12. Panel; 13. Insulation layer; 14. Notch; 15. Lifting point. Detailed Implementation

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0031] Example 1

[0032] like Figures 1-4 As shown, a preheating furnace cover plate includes a cover plate body 1 and a movable cover plate 2.

[0033] The tail end of the cover plate body 1 is provided with a hinge part 3, which is used to hinge with the rear part of the furnace body 4 of the preheating furnace to form a flip cover structure.

[0034] The cover plate body 1 includes a metal frame 11, a panel 12 encapsulated on the metal frame, and a heat insulation layer 13 filled inside the panel. The front and top surfaces of the cover plate body 1 are provided with through notches 14 for the passage of the anode guide rod 5.

[0035] The movable cover plate 2 is a cover plate adapted to the shape of the notch 14, used to movably close the notch 14. After closing, only a small opening is left at a local position at the top. The size of the opening is slightly larger than the outer dimensions of the anode guide rod 5, so that the anode guide rod 5 can pass through.

[0036] In this embodiment, the notch is L-shaped, the movable cover is L-shaped to fit the notch, the rear end of the notch 14 extends to the center of the top surface of the cover body 1, the front end of the notch 14 extends to the bottom of the front side of the cover body, and divides the front side of the cover body into two unconnected segments.

[0037] In other embodiments, the notch shape can be designed into other shapes as needed.

[0038] The material of the heat insulation layer 13 can be ceramic fiber blanket. The lower boundary of the heat insulation layer 13 extends beyond the lower edge of the cover body 1. In this embodiment, it extends by about 10mm, with a minimum of 5mm and a maximum of more than 10mm, depending on the actual situation. The boundary of the heat insulation layer at the notch extends beyond the edge of the notch, and the extension here is more. In this embodiment, it is about 40mm, with a minimum of 20mm and a maximum of more than 40mm.

[0039] Since the notch needs to be in frequent contact with the anode guide rod 5, in order to prevent wear, the heat insulation layer extending beyond the notch frame is wrapped with fire-resistant cloth and a fixing protective layer in sequence. In this embodiment, the fire-resistant cloth can be common asbestos cloth, and the fixing protective layer can be a wire mesh protective layer.

[0040] To facilitate the opening of the cover body, a lifting ring is installed at the top of the cover body, which serves as the lifting point 15 of the flip-top drive mechanism.

[0041] Example 2

[0042] like Figures 4-6 As shown, a preheating furnace includes a furnace body 4 and a preheating furnace cover plate, wherein the tail end of the cover plate body 1 is hinged to the tail end of the furnace body 4.

[0043] The rear end of the furnace body 4 is provided with a flip-top driving mechanism, which is used to drive the opening and closing of the preheating furnace cover.

[0044] Specifically, in this embodiment, the flip-top driving mechanism includes a winch motor 6, a support frame 7, a fixed pulley 8, and a traction rope 9. The support frame 7 is located at the rear of the furnace body 4, the fixed pulley 8 is installed at the top of the support frame 7, one end of the traction rope 9 is pulled by the winch motor 6, the middle part passes around the fixed pulley 8, and the other end is connected to the top suspension point 15 of the cover plate body 1.

[0045] In some embodiments, as shown in the figure, the furnace body is provided with at least two preheating chambers, and the number of preheating furnace covers corresponds one-to-one with the number of preheating chambers.

[0046] In other embodiments, the furnace body is provided with at least two preheating chambers, the number of preheating furnace covers is only one, the number of notches is the same as the number of preheating chambers, and the number of flip-top drive mechanisms is at least one.

[0047] Working principle explanation:

[0048] When anode preheating is required, first remove the movable cover plate 2, and drive the cover plate body 1 to flip and open the furnace body of the preheating furnace by starting the hoisting motor 6, exposing the top of the furnace body.

[0049] Then, the anode is hoisted into the furnace body 4 using a suspension system, and the anode carbon blocks are arranged according to the anode positioning limits in the furnace body, so that the position of the anode guide rod 5 matches the position of the notch.

[0050] Then control the winch motor 6 to gradually release the traction rope 9, and the preheating furnace cover will gradually descend to cover the top open area of ​​the furnace body 1.

[0051] Finally, the movable cover plate 2 is manually installed at the notch to complete all the actions of the preheating furnace cover plate, and preheating can begin.

[0052] The process of removing the anode is simply the reverse of the process described above.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A preheating furnace cover plate, characterized in that: Including the cover plate body; The tail end of the cover plate body is provided with a hinge part for hinged connection with the rear part of the preheating furnace to form a flip cover structure. The cover body includes a metal frame, a panel encapsulated on the metal frame, and a heat insulation layer filled inside the panel; The front and top surfaces of the cover plate body are provided with through notches for the passage of the anode guide rod.

2. The preheating furnace cover plate according to claim 1, characterized in that: The rear end of the notch extends to the center of the top surface of the cover body, and the front end of the notch extends to the bottom of the front side of the cover body, dividing the front side of the cover body into two unconnected segments.

3. The preheating furnace cover plate according to claim 1, characterized in that: It also includes a movable cover plate, which is a cover plate adapted to the shape of the notch and is used to movably close the notch.

4. The preheating furnace cover plate according to claim 1, characterized in that: The lower boundary of the insulation layer extends beyond the lower edge of the cover body.

5. The preheating furnace cover plate according to claim 1, characterized in that: The boundary of the insulation layer at the gap extends beyond the edge of the gap.

6. The preheating furnace cover plate according to claim 5, characterized in that: The heat insulation layer extending beyond the edge of the notch is wrapped with fire-resistant cloth and a fixing protective layer in sequence.

7. The preheating furnace cover plate according to claim 1, characterized in that: The top of the cover body is equipped with a lifting ring, which serves as a lifting point for the flip-top drive mechanism.

8. The preheating furnace cover plate according to claim 3, characterized in that: The notch is L-shaped, and the movable cover plate is L-shaped to fit the notch.

9. A preheating furnace, characterized in that: It includes a furnace body and a preheating furnace cover plate as described in any one of claims 1-8, wherein the tail end of the cover plate body is hinged to the tail end of the furnace body. The rear end of the furnace body is provided with a flip-top driving mechanism, which is used to drive the opening and closing of the preheating furnace cover.

10. The preheating furnace according to claim 9, characterized in that: The flip-top drive mechanism includes a winch motor, a vertical frame, a fixed pulley, and a traction rope. The vertical frame is located at the rear of the furnace body, the fixed pulley is installed at the top of the vertical frame, one end of the traction rope is pulled by the winch motor, the middle part passes around the fixed pulley, and the other end is connected to the top suspension point of the cover plate body.

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