Smelting furnace water inlet structure

Abstract

This utility model belongs to the field of ingot casting processing, specifically disclosing a water inlet structure for a smelting furnace. It includes a feed tank located at the furnace opening, with a feed inlet at the top and a cover for sealing it. A discharge outlet is located on the side of the feed tank, communicating with the furnace opening. The bottom of the feed tank is inclined, with its lower end facing the furnace opening. A limiting ring is installed on the cover, with a sealing element on its inner wall. The limiting ring engages with the outer wall of the upper part of the feed tank, and the sealing element seals the gap between the limiting ring and the outer wall of the upper part of the feed tank. This utility model solves the problems of molten aluminum oxidizing upon contact with air and forming slag when flowing through the water inlet, and some molten aluminum remaining on the inner wall of the water inlet due to temperature drop, forming hardened aluminum slag, requiring regular slag removal and causing raw material waste.

Description

Technical Field

[0001] This utility model belongs to the field of ingot processing, and specifically relates to the structure of the water inlet of a smelting furnace. Background Technology

[0002] In the aluminum smelting process, molten aluminum needs to be replenished into the smelting furnace regularly. Traditional water inlets are usually located on the side of the smelting furnace and use an open funnel or inclined trough structure, which has the following drawbacks: when the molten aluminum flows through the water inlet, it comes into contact with air and oxidizes to form slag. Some molten aluminum remains on the inner wall of the water inlet due to the drop in temperature, forming hardened aluminum slag. The machine needs to be stopped after every 2-3 additions of material, and then the slag needs to be cleaned manually or using slag removal equipment. Each cleaning takes more than 30 minutes on average, which reduces the utilization rate of the equipment. In addition, the residual aluminum slag will also lead to the waste of raw materials and increase production costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a water inlet structure for a smelting furnace, which solves the problems of aluminum molten metal oxidizing upon contact with air and generating slag when flowing through the water inlet, and some aluminum molten metal remaining on the inner wall of the water inlet due to temperature drop, forming hardened aluminum slag, requiring regular slag removal and causing raw material waste.

[0004] According to the embodiments of this utility model, the following technical solution is adopted:

[0005] The water inlet structure of the smelting furnace includes a feed tank located at the opening of the smelting furnace. The feed tank has a feed inlet at the upper end and a cover for sealing the feed inlet. The feed tank has a discharge outlet on the side, which is used to communicate with the opening of the smelting furnace. The bottom of the feed tank is inclined and the lower end faces the opening of the smelting furnace. A limit ring is installed on the cover. The inner wall of the limit ring and / or the cover has a sealing element. The limit ring is used to fit on the outer wall of the upper end of the feed tank, and the sealing element is used to seal the gap between the cover and the feed inlet.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] Open the cover to add molten aluminum into the smelting furnace through the feed tank. The bottom of the feed tank is tilted to facilitate the flow of molten aluminum into the smelting furnace. After the molten aluminum is added, close the cover to seal the feed inlet. The high temperature inside the smelting furnace radiates to the feed tank, reducing heat loss at the feed tank. This allows the remaining molten aluminum in the feed tank to continue flowing into the smelting furnace, reducing the accumulation and hardening of aluminum slag. The water addition operation is safer and more efficient.

[0008] Furthermore, the bottom and sidewalls of the feed tank form an arc-shaped transition.

[0009] Furthermore, the side wall of the feed tank is provided with a tubular discharge section, and the discharge port is opened on the discharge section.

[0010] Furthermore, a bracket is installed at the upper end of the discharge section, and a sleeve is fixed at the end of the cover, with the sleeve rotatably connected to the bracket.

[0011] Furthermore, the bracket can be detachably connected to the discharge section.

[0012] Furthermore, a handle is installed on the cover, and a heat insulation sleeve is fitted on the outside of the handle.

[0013] Furthermore, a heat insulation cover is fitted onto the cover body. The heat insulation cover includes a flat portion covering the upper surface of the cover body and a cylindrical portion fitted onto the outside of the feed tank. The lower end of the cylindrical portion is positioned at a height lower than the lower end of the limiting ring.

[0014] Furthermore, the connecting rope on the handle also includes a fixed pulley installed on the outer wall of the smelting furnace. The fixed pulley is installed at a height higher than the cover, and the free end of the connecting rope is vertically downward after passing through the upper end of the fixed pulley.

[0015] Furthermore, the sealing element includes a ceramic fiber felt installed at the bottom of the cover, with the middle of the ceramic fiber felt bolted to the cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the feed tank and the heat insulation cover in the embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the feed tank in an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the feed tank in an embodiment of this utility model.

[0020] In the diagram: 1. Smelting furnace; 2. Feed tank; 3. Discharge section; 4. Cylindrical section; 5. Flat section; 6. Heat insulation cover; 7. Handle; 8. Through hole; 9. Cover; 10. Limiting ring; 11. Bracket; 12. Sleeve; 13. Ceramic fiber felt; 14. Connecting rope; 15. Fixed pulley. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings, and specific embodiments will be given.

[0022] like Figure 1 , Figure 3As shown, the water inlet structure of the smelting furnace includes a feed tank 2 located at the opening of the smelting furnace 1. The smelting furnace 1 in this design has an opening on its side wall, allowing water to be added from the side wall of the smelting furnace 1. The feed tank 2 has a feed inlet at its upper end and is fitted with a cover 9 for sealing the feed inlet. The feed tank 2 has a discharge outlet on its side, which is used to communicate with the opening of the smelting furnace 1. Specifically, the side wall of the feed tank 2 has a tubular discharge section 3, and the discharge outlet is located on the discharge section 3. The discharge section 3 is fixedly connected to the smelting furnace 1, allowing the molten aluminum in the feed tank 2 to enter the smelting furnace 1.

[0023] Combination Figure 4 As shown, the bottom of the feed tank 2 is inclined, with its lower end facing the opening of the smelting furnace 1. The replenished molten aluminum enters the feed tank 2 through the feed inlet, then passes through the discharge section 3 and the discharge outlet before entering the smelting furnace 1. In actual design, the feed tank 2 can be designed with a structure that is wider at the top and narrower at the bottom, resulting in a larger feed inlet size to facilitate the flow of molten aluminum. The bottom and sidewalls of the feed tank 2 form an arc transition to reduce the accumulation of molten aluminum at the bottom of the feed tank 2 and to facilitate its flow.

[0024] A limiting ring 10 is installed on the cover 9. A sealing element is provided on the inner wall of the limiting ring 10 and / or on the cover 9. The limiting ring 10 is used to fit over the upper outer wall of the feed tank 2, and the sealing element is used to seal the gap between the cover 9 and the feed inlet. Specifically, in conjunction with... Figure 4 As shown, in this embodiment, the sealing element includes a ceramic fiber felt 13 installed at the bottom of the cover 9. The ceramic fiber felt 13 is bolted to the cover 9 in the middle. The ceramic fiber felt 13 is a flexible material that can withstand high temperatures. During use, the cover 9 is pressed down, causing the ceramic fiber felt 13 to be pressed against the top of the feed tank 2, sealing the top of the feed tank 2 and reducing heat loss. In actual design, the ceramic fiber felt 13 can also be placed on the inner wall of the limiting ring 10. However, when connecting the ceramic fiber felt 13 and the cover 9, the ceramic fiber felt 13 can be first bonded to the cover 9, and then fixed with bolts in the middle. This has less impact on the circumferential sealing effect and can prevent the bond from becoming weak after being affected by high temperatures. Fixing the ceramic fiber felt 13 to the limiting ring 10 may affect the sealing effect. By placing the limiting ring 10 on the outer wall of the upper end of the feed tank 2, compared to inserting the limiting ring 10 into the inner wall of the upper end of the feed tank 2, the aluminum slag on the inner wall of the feed tank 2 can be prevented from affecting the seal.

[0025] In this embodiment, the cover 9 is directly attached to the feed tank 2. A handle 7 is installed on the cover 9, and a heat insulation sleeve is fitted on the outside of the handle 7. The heat insulation sleeve is made of ceramic fiber material. The cover 9 can be removed from the feed tank 2 by using the handle 7, or the cover 9 can be attached to the feed tank 2. After the cover 9 is opened, molten aluminum can be added to the smelting furnace 1 through the feed tank 2. After the molten aluminum is added, the cover 9 is closed to seal the feed inlet. The high temperature inside the smelting furnace 1 radiates to the feed tank 2, reducing heat loss at the feed tank 2. This allows the molten aluminum remaining in the feed tank 2 to continue flowing into the smelting furnace 1, reducing the accumulation and hardening of aluminum slag.

[0026] In another embodiment of this utility model, combined with Figure 2 , Figure 4 As shown, in this embodiment, the cover 9 is connected to the feed tank 2. Specifically, a bracket 11 is installed on the upper end of the discharge section 3, and a sleeve 12 is fixed to the end of the cover 9. The sleeve 12 is rotatably connected to the bracket 11. When the cover 9 is pulled by the handle 7, the cover 9 can rotate relative to the bracket 11, so that the cover 9 deflects relative to the feed tank 2 to open the feed port. The cover 9 is located on one side of the discharge section 3 to prevent the cover 9 from obstructing the aluminum liquid from entering the feed tank 2.

[0027] The bracket 11 is detachably connected to the discharge section 3. Specifically, the bracket 11 is bolted to the discharge section 3. After a long period of use, the cover 9 and the bracket 11 can be removed for cleaning to prevent aluminum liquid from splashing onto the bracket 11 and sleeve 12 and solidifying, which would affect the flexibility of movement. It also makes it easier to replace the ceramic fiber felt 13 according to the usage conditions.

[0028] In another embodiment of this utility model, combined with Figure 4 As shown, in order to facilitate the restriction of the cover 9 after it is opened and to improve safety, in this embodiment, a connecting rope 14 is fixed on the handle 7, and a fixed pulley 15 is rotatably connected to the outer wall of the smelting furnace 1. Specifically, the fixed pulley 15 adopts the fixed pulley structure in the prior art. The installation position of the fixed pulley 15 is higher than the height of the cover 9, and the free end of the connecting rope 14 is vertically downward after passing through the upper end of the fixed pulley 15.

[0029] In this embodiment, by designing the fixed pulley 15, when the free end of the connecting rope 14 is pulled, the handle 7 can be pulled to open the cover 9. In actual design process, the cover 9 can be limited by setting the length of the connecting rope 14 and tying the free end of the connecting rope 14 to a certain place in the workshop, or by directly pulling the free end of the connecting rope 14 manually but standing at a certain distance from the smelting furnace 1.

[0030] In another embodiment of this utility model, combined with Figure 2 , Figure 4As shown, a heat insulation cover 6 is fitted onto the cover 9, and the heat insulation cover 6 is made of ceramic fiber material. The heat insulation cover 6 includes a flat portion 5 covering the upper surface of the cover 9 and a cylindrical portion 4 fitted onto the outside of the feed tank 2. The lower end of the cylindrical portion 4 is positioned lower than the lower end of the limiting ring 10. The heat insulation cover 6 insulates the cover 9, reducing heat loss at the top of the cover 9 and the feed tank 2. In addition, by making the heat insulation cover 6 relatively long, covering the upper part of the feed tank 2, it has a certain heat insulation effect, which can also improve safety when workers approach the connecting rope 14 or perform other operations.

[0031] The flat part 5 has a through hole 8 in the middle for the handle 7 to pass through, and the cylindrical part 4 has a notch on the side for the discharge part 3 to pass through, so that the heat insulation cover 6 can be fitted onto the cover body 9. When the aluminum liquid is introduced, the heat insulation cover 6 can be removed and can be operated by a robotic arm in the prior art or by a long-handled clamp that can be used remotely.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water inlet structure for a smelting furnace, characterized in that: The device includes a feed tank located at the opening of a smelting furnace. The feed tank has a feed inlet at its upper end and a cover for sealing the feed inlet. The feed tank has a discharge outlet on its side, which is used to communicate with the opening of the smelting furnace. The bottom of the feed tank is inclined and the lower end faces the opening of the smelting furnace. A limit ring is installed on the cover, and a sealing element is provided on the inner wall of the limit ring and / or on the cover. The limit ring is used to fit around the upper outer wall of the feed tank, and the sealing element is used to seal the gap between the cover and the feed inlet.

2. The water inlet structure of the smelting furnace according to claim 1, characterized in that: The bottom and sidewall of the feed tank have an arc-shaped transition.

3. The water inlet structure of the smelting furnace according to claim 1, characterized in that: The side wall of the feed tank is provided with a tubular discharge section, and the discharge port is opened on the discharge section.

4. The water inlet structure of the smelting furnace according to claim 3, characterized in that: A bracket is installed at the upper end of the discharge section, and a sleeve is fixed at the end of the cover. The sleeve is rotatably connected to the bracket.

5. The water inlet structure of the smelting furnace according to claim 4, characterized in that: The bracket is detachably connected to the discharge section.

6. The water inlet structure of the smelting furnace according to any one of claims 1-5, characterized in that: The cover is equipped with a handle, and a heat insulation sleeve is fitted over the outside of the handle.

7. The water inlet structure of the smelting furnace according to claim 6, characterized in that: A heat insulation cover is fitted onto the cover. The heat insulation cover includes a flat portion covering the upper surface of the cover and a cylindrical portion fitted onto the outside of the feed tank. The lower end of the cylindrical portion is positioned lower than the lower end of the limiting ring.

8. The water inlet structure of the smelting furnace according to claim 6, characterized in that: The handle is fixed with a connecting rope, and a fixed pulley is installed on the outer wall of the smelting furnace. The fixed pulley is installed at a height higher than the cover, and the free end of the connecting rope is vertically downward after passing through the upper end of the fixed pulley.

9. The water inlet structure of the smelting furnace according to any one of claims 1-5, characterized in that: The sealing element includes a ceramic fiber felt installed at the bottom of the cover, with the middle of the ceramic fiber felt bolted to the cover.

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