Furnace nozzle for vacuum melting furnace
By designing the furnace nozzle for vacuum smelting furnace, including macaroni cylinders, arc-shaped connections and extension ports, the damage to the furnace body when metal liquid pours is solved, the smooth pouring of metal liquid and the protection of the furnace body is achieved, and the service life of the smelting furnace is extended.
Patent Information
- Application Number
- CN202422455002.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-11
AI Technical Summary
During metal smelting, it is difficult for the prior art to protect the outer wall of the vacuum smelting furnace when pouring metal liquid to avoid damage to the furnace body from high-temperature metal liquids.
A fire nozzle for vacuum smelting furnace is designed, including a macaron, arc-shaped connection and extension port. The liquid flow channel gradually becomes smaller to ensure that the metal liquid is poured smoothly to the target container and avoid flowing to the outside of the furnace body. A furnace nozzle of the same material as the furnace body crucible is used to enhance the connection strength and protect the metal liquid from oxidation through argon.
It improves the height and fluidity of metal liquid pouring, protects the furnace body from damage, extends the service life of the smelting furnace, and avoids oxidation of metal liquids.
Smart Images
Figure CN223179273U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal smelting, in particular to a furnace nozzle for a vacuum smelting furnace. Background Art
[0002] Vacuum melting furnaces are used in the field of metal smelting. After the metal is melted, the molten metal needs to be poured out of the furnace body for casting. If the metal is poured directly from the furnace mouth, the high-temperature molten metal will flow onto the outer wall of the furnace body, causing serious damage to the outer wall of the vacuum melting furnace. Therefore, in actual production, a device is needed to make it easier to pour the molten metal without damaging the furnace body. Utility Model Content
[0003] Problem to be solved: To provide a device which can increase the pouring height of molten metal and does not damage the furnace body when the furnace body is tilted.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a furnace nozzle for a vacuum melting furnace, comprising a through cylinder, a through hole provided inside the through cylinder, an extension opening provided above one side of the through cylinder, the extension opening being connected to the upper side of the other side of the through cylinder through an arc-shaped connecting portion, the inner wall of the extension opening being connected to the inner wall of the through cylinder to form a liquid flow channel, the liquid flow channel being connected to the through hole, and the liquid flow channel gradually becomes smaller from the through hole toward the extension opening.
[0005] Preferably, the lowest point of the arc-shaped connecting portion is not lower than the upper surface of the through-cylinder.
[0006] Preferably, the lowest point of the arc-shaped connecting portion is tangent to the upper surface of the through-cylinder.
[0007] Preferably, the highest point of the arc-shaped connecting portion is not higher than the lower surface of the extension opening.
[0008] Preferably, the highest point of the arc-shaped connecting portion is tangent to the outer surface of the extension opening.
[0009] Preferably, the arc angle of the arc-shaped connecting portion is π / 2.
[0010] Preferably, the cross section of the liquid flow channel and the cross section of the through hole are cocentric.
[0011] Compared with the prior art, the present invention provides a nozzle for a vacuum melting furnace, which has the following beneficial effects: the material of the nozzle of the present invention is the same as the crucible of the melting furnace body, and the nozzle is installed above the crucible of the furnace body. When the furnace body is tilted, the metal liquid is directed into the target container, thereby increasing the height of the pouring flow of the metal liquid without damaging the furnace body, and preventing the metal liquid from flowing to the outside of the furnace body and causing damage to the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is an axonometric schematic diagram of the present invention.
[0013] Figure 2 This is a schematic diagram of another angle of the present utility model.
[0014] Explanation of reference numerals in the drawings: 1, through-hole cylinder; 2, arc connecting portion; 3, extension port; 4, through-hole; 5, liquid flow channel. Specific embodiments
[0015] Next, the technical solutions in the embodiments of the present utility model will be described in conjunction with the accompanying drawings in the embodiments of the present utility model:
[0016] As shown in the figure, a nozzle for a vacuum melting furnace includes a through-hole cylinder 1. A through-hole 4 is provided inside the through-hole cylinder 1. The bottom end of the through-hole cylinder 1 is connected above the crucible of the melting furnace body. Above one side of the through-hole cylinder 1, there is an extension port 3. The extension port 3 and the other side above the through-hole cylinder 1 are transitionally connected through an arc connecting portion 2. The liquid flow channel 5 sequentially penetrates through the through-hole cylinder 1, the arc connecting portion 2, and the extension port 3 and gradually becomes smaller. The melted metal liquid flows from the through-hole 4 to the end of the liquid flow channel 5 and enters the target container, completing the pouring of the metal liquid and avoiding the metal liquid flowing to the outside of the furnace body and causing damage and pollution to the furnace body. When designing, the lowest point of the arc connecting portion 2 should not be lower than the upper surface of the through-hole cylinder 1, so that the metal liquid will not overflow from the nozzle during the pouring process. At the same time, considering the processing technology, the lowest point of the arc connecting portion 2 is tangent to the upper surface of the through-hole cylinder 1.
[0017] Similarly, the highest point of the arc connecting portion 2 is not higher than the lower surface of the extension port 3, ensuring that the liquid flow channel 5 gradually becomes smaller. The metal liquid flows out along the gradually decreasing liquid flow channel 5. At the same time, the highest point of the arc connecting portion 2 is tangent to the outer surface of the extension port 3. The radian of the arc connecting portion 2 is π / 2, and the cross-section of the liquid flow channel 5 and the cross-section of the through-hole 4 are concentric. The nozzle of the present utility model can well guide and pour the metal liquid out of the vacuum melting furnace, avoiding pollution and damage to the outer surface of the furnace body and extending the service life of the melting furnace.
[0018] During use, the through-hole 4 of the nozzle of the present utility model is in a mating connection with the inner circle of the crucible of the furnace body. The outer circle of the nozzle is larger than the outer circle of the crucible, ensuring a firm connection between the nozzle and the crucible. Since the side of the through-hole cylinder 1 symmetric to the extension port 3 is not higher than the arc connecting portion 2, on the premise of ensuring its strength, it is convenient to observe the metal melting condition in the crucible through the sight glass of the vacuum hood above the furnace body. There is a hole with a diameter of 8 mm at the middle height position of the sight glass of the vacuum hood. The hole with a diameter of 8 mm is welded to a stainless steel pipe with a diameter of 8 mm. The stainless steel pipe extends to the outside of the furnace body and is connected to an argon gas cylinder. When the furnace body is tilted, the valve of the argon gas cylinder is opened, and argon gas is used to protect the metal liquid from being oxidized during the pouring process.
[0019] The above embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
Claims
1. A nozzle for a vacuum melting furnace, characterized in that: It includes a hollow cylinder (1) with a through hole (4) inside. Above one side of the hollow cylinder (1), there is an extension port (3). The extension port (3) is connected to the other side above the hollow cylinder (1) through an arc-shaped connecting part (2). The inner wall of the extension port (3) is communicated with the inner wall of the hollow cylinder (1) to form a liquid flow channel (5). The liquid flow channel (5) is communicated with the through hole (4), and the liquid flow channel (5) gradually becomes smaller from the through hole (4) towards the extension port (3).
2. The nozzle for a vacuum melting furnace according to claim 1, characterized in that: The lowest point of the arc-shaped connecting part (2) is not lower than the upper surface of the hollow cylinder (1).
3. The nozzle for a vacuum melting furnace according to claim 1, characterized in that: The lowest point of the arc-shaped connecting part (2) is tangent to the upper surface of the hollow cylinder (1).
4. The nozzle for a vacuum melting furnace according to claim 2, characterized in that: The highest point of the arc-shaped connecting part (2) is not higher than the lower surface of the extension port (3).
5. The nozzle for a vacuum melting furnace according to claim 4, wherein: The highest point of the arc-shaped connecting part (2) is tangent to the outer surface of the extension port (3).
6. The nozzle for a vacuum melting furnace according to claim 5, characterized in that: The radian of the arc-shaped connecting part (2) is π / 2.
7. A nozzle for a vacuum melting furnace according to claim 1, characterized in that: The cross-section of the liquid flow channel (5) and the cross-section of the through hole (4) are concentric.