Safety structure suitable for high-zinc brass pressure casting smelting furnace
By designing a safety structure on a high-zinc brass pressure casting furnace, including overflow chamber and overflow crater, the copper liquid overflow and leakage caused by zinc boiling is solved, and the safety and resource utilization efficiency are significantly improved.
Patent Information
- Application Number
- CN202421895406.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-07
AI Technical Summary
During the pressure casting of high zinc brass, the boiling of zinc elements in the melting chamber causes a sharp increase in the pressure in the furnace, which may cause a sharp rise and overflow of the copper liquid level, causing a high-temperature copper liquid leakage accident, posing a safety hazard.
A safety structure suitable for high zinc brass pressure casting furnaces is designed, including structural body, overflow chamber, baffle, overflow cradle and cover. The overflow chamber is used to collect the overflow copper liquid. The overflow gantry guides the copper liquid into the overflow chamber. The through-hole at the bottom of the baffle is designed to balance the pressure, and the triangular structure is designed to disperse the impact force.
By collecting the overflowing copper liquid and guiding it into the overflow chamber, the risk of high-temperature copper liquid leakage is significantly reduced, the safety in the high-zinc brass pressure casting process is enhanced, and the management and resource utilization efficiency of high-temperature copper liquid is improved.
Smart Images
Figure CN222865542U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting furnaces, in particular to a safety structure suitable for a high-zinc brass pressure casting furnace. Background Art
[0002] The furnace body structure of the melting furnace is strictly composed of three parts: the melting chamber, the connecting channel and the composite chamber. Among them, the melting chamber is a completely enclosed space, and nitrogen is injected into it through a precise gas pressure control device. As the pressure in the furnace gradually increases, the brass liquid will be guided into the composite chamber structure through the connecting channel. Furthermore, when the pressure in the melting chamber continues to rise, the copper liquid in the composite chamber will also rise until the liquid level reaches the preset casting height, at which time the composite casting operation of metal solid-liquid materials can be carried out.
[0003] During the smelting process of high-zinc brass (zinc content exceeding 30%), the operating temperature in the melting chamber needs to be maintained at about 1100°C. However, given that zinc has a low boiling point (907°C) and a high saturated vapor pressure, this characteristic can easily lead to stirring and boiling in the molten pool. Especially in the closed environment of an oxygen-free pressure casting furnace, once the zinc element in the melting chamber boils, the pressure in the furnace will increase sharply (about 90mbar) in an instant. Under the action of this strong pressure, the copper liquid will quickly flow into the composite chamber through the connecting channel of the furnace body, causing the copper liquid level in the composite chamber to rise sharply or even overflow, which may eventually cause a leakage accident of the high-temperature copper liquid, posing a great safety hazard. Utility Model Content
[0004] The utility model aims to at least solve the technical problem in the prior art that when the liquid level in the composite cavity rises, there is a risk of overflow of copper liquid and there is a safety accident. In particular, a safety structure suitable for a high-zinc brass pressure casting furnace is innovatively proposed.
[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a safety structure suitable for a high-zinc brass pressure casting furnace, wherein the safety structure is fixedly arranged on the furnace; the safety structure comprises:
[0006] Structural ontology;
[0007] At least one overflow chamber is disposed in the structural body;
[0008] A baffle, disposed in the structure body;
[0009] An overflow sill is arranged on the structural body, and the height of the overflow sill is lower than the top of the structural body;
[0010] The sealing cover is arranged on the structural body.
[0011] As an optional embodiment of the present utility model, optionally, at least one baffle is provided in the structural body, and a plurality of through holes are provided at the bottom of the baffle.
[0012] As an optional embodiment of the present utility model, optionally, the overflow cavity is an elliptical structure.
[0013] As an optional embodiment of the present utility model, optionally, the overflow ridge is arranged to be inclined toward the overflow cavity.
[0014] As an optional embodiment of the present utility model, optionally, the bottom of the overflow chamber is an inclined structure.
[0015] As an optional embodiment of the utility model, optionally, the safety structure further includes a drain valve, and the drain valve is arranged at the lowest point of the bottom of the overflow chamber.
[0016] The beneficial effect of the utility model is that the utility model significantly reduces the risk of leakage of high-temperature copper liquid by installing an overflow chamber on the furnace and collecting the copper liquid overflowed due to the sudden increase in pressure through the overflow chamber, thereby enhancing the safety during the high-zinc brass pressure casting process. The utility model can also guide the overflowed copper liquid to flow smoothly into the overflow chamber through the overflow sill inclined in the overflow chamber, avoiding its direct splashing to the outside of the furnace, further improving the safety. In addition, the through-hole design at the bottom of the baffle not only helps to balance the pressure on both sides of the baffle, but also slows down the flow rate of the copper liquid to a certain extent. The triangular structure design at the top of the baffle not only enhances the strength of the baffle, but also disperses the impact force when the copper liquid impacts, reduces the possibility of damage to the baffle, and prevents the high-temperature copper liquid from stagnating on the top of the baffle.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a partial structural schematic diagram of the utility model.
[0021] Figure 3 It is a schematic diagram of a baffle of the utility model.
[0022] Figure 4 It is a schematic diagram of the assembly structure of the utility model.
[0023] In the figure: 1. structural body, 2. baffle, 3. overflow sill, 4. drain valve, 5. through hole, 6. triangular structure, 7. overflow cavity, 8. visual window, 9. scale line. DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] like Figure 1 As shown, a safety structure suitable for a high-zinc brass pressure casting furnace is fixed on the furnace; the safety structure comprises:
[0026] Structural entity 1, such as Figure 1 As shown, the structural body 1 is a rectangular parallelepiped, and in this embodiment is fixed to the outside of the composite cavity by welding to ensure the stability of the structure. The material of the structural body 1 is a high-temperature resistant and high-strength alloy material, such as a nickel-based alloy or a chromium-nickel-iron alloy, to withstand the high temperature environment of the copper liquid. The inner wall of the structural body 1 is treated with a special high-temperature anti-oxidation coating to enhance its high-temperature resistance and extend its service life.
[0027] At least one overflow cavity 7 is arranged in the structural body 1, such as Figure 2 As shown in the present embodiment, three baffles 2 are provided, and four overflow chambers 7 are respectively located between the baffles 2 and between the baffles 2 and the edge of the structural body 1, forming an effective copper liquid collection area. Each overflow chamber 7 is designed to be elliptical to ensure that the overflowed copper liquid can flow into the overflow chamber 7 quickly and smoothly, reducing the risk of sputtering and retention. The bottom of the overflow chamber 7 is designed to be a smooth transition to reduce the resistance and wear of the copper liquid when it flows.
[0028] The baffle 2 is arranged in the structural body 1, such as Figure 2 and 3 As shown, the baffle 2 is made of a high-temperature resistant and high-strength alloy material, such as a nickel-based alloy or a chromium-nickel-iron alloy, to withstand the high-temperature environment of the copper liquid. The baffle 2 is fixed in the structural body 1 by welding, and the baffle 2 is fixed perpendicular to the structural body 1.
[0029] The overflow sill 3 is arranged on the structural body 1, and the height of the overflow sill 3 is lower than the top of the structural body 1. Figure 1 and 2As shown, the overflow ridge 2 inclined on the overflow chamber 7 can guide the overflowed copper liquid to flow smoothly into the overflow chamber 7 to prevent it from directly splashing to the outside of the furnace, and the horizontal height of the overflow ridge 3 is lower than the height of the top of the structural body 1, preventing the copper liquid from overflowing out of the overflow chamber 7, thereby improving safety.
[0030] The sealing cover is arranged on the structural body 1. The sealing cover (not shown in the figure) tightly covers the top of the structural body 1 and is made of high temperature and high pressure resistant materials, such as high strength ceramic fiber or graphite composite material, to ensure that good sealing performance can be maintained under high temperature and high pressure environment.
[0031] like Figures 1 to 4 As shown, the structural body 1 is fixed to the outside of the composite cavity by welding. When the smelting furnace is casting high-zinc brass at high pressure, if the copper liquid pressure is abnormally increased, the safety structure of this embodiment will immediately play its key role. Specifically, when the internal pressure of the smelting furnace increases suddenly and the copper liquid has a tendency to overflow, the copper liquid will first contact the overflow sill 3. Since the design height of the overflow sill 3 is lower than the top of the structural body 1, and its inclination angle cleverly guides the flow direction of the copper liquid, the copper liquid can flow smoothly into the overflow cavity 7 along the overflow sill 3, instead of directly sputtering to the outside of the smelting furnace or other parts of the structural body 1, thereby effectively reducing the potential harm of the high-temperature copper liquid to the surrounding environment and equipment. Further, when the copper liquid enters the overflow cavity 7, its elliptical design not only increases the accommodating space of the copper liquid, but also enables the copper liquid to quickly disperse and reduce the flow rate during the flow process, reducing the additional pressure caused by the accumulation of copper liquid. At the same time, the inclined structure at the bottom of the overflow cavity 7 helps the copper liquid to flow further to the lowest point of the cavity, which provides convenience for subsequent drainage operations. In order to manage the overflowed copper liquid more efficiently, the present embodiment further provides a drain valve 4 at the lowest point of the bottom of the overflow chamber 7. When a certain amount of copper liquid is collected, the operator can open the drain valve 4 to safely discharge the copper liquid and recycle it for reuse, thereby achieving effective management of the high-temperature copper liquid and efficient utilization of resources.
[0032] As an optional embodiment of the present utility model, optionally, at least one baffle plate 2 is disposed in the structural body 1 , and a plurality of through holes 5 are disposed at the bottom of the baffle plate 2 .
[0033] like Figure 2 and 3 As shown, by opening a plurality of through holes 5 at the bottom of the baffle 2, the pressure of each overflow cavity 7 can be balanced, which promotes the uniform distribution of the copper liquid on both sides of the baffle. The copper liquid splashing due to pressure concentration is avoided. The size, number and specific position distribution of the through holes 5 can be arranged according to actual conditions; the copper liquid in each overflow cavity 7 can flow to the lowest point of the structural body 1 through the through holes 5 and converge to the unified drain valve 4, further enhancing the efficiency and safety of the drainage.
[0034] As an optional embodiment of the present utility model, optionally, the top of the baffle 2 is a triangular structure 6.
[0035] like Figure 3 As shown, the top edge of the triangular structure 6 also has a "guiding" effect. When the copper liquid contacts the top of the baffle 2, its flow direction will be guided by the triangular structure 6, so that the copper liquid can flow more smoothly into the overflow cavity below, rather than accumulating on the top of the baffle, reducing the risk of high-temperature copper liquid stagnation on the top of the baffle.
[0036] As an optional embodiment of the present utility model, optionally, the overflow chamber 7 is an elliptical structure.
[0037] like Figure 1 and 2 As shown, designing the overflow cavity 7 as an elliptical structure can better fit the flow characteristics of the copper liquid, ensuring that the copper liquid can flow more smoothly and be evenly distributed in the overflow cavity during the high-pressure casting process. The elliptical overflow cavity 7 can effectively prevent the copper liquid from splashing out. Since the edge of the ellipse is relatively smooth, it is not easy to accumulate copper slag or other impurities, which helps to keep the overflow cavity clean and unobstructed.
[0038] As an optional embodiment of the present utility model, optionally, the overflow ridge 3 is arranged to be inclined toward the overflow chamber 7.
[0039] like Figure 2 As shown, the overflow ridge 2 inclined on the overflow chamber 7 can guide the overflowed copper liquid to flow smoothly into the overflow chamber 7 to prevent it from directly splashing to the outside of the furnace, and the horizontal height of the overflow ridge 3 is lower than the height of the top of the structural body 1, preventing the copper liquid from overflowing out of the overflow chamber 7, thereby improving safety.
[0040] As an optional embodiment of the present utility model, optionally, the bottom of the overflow chamber 7 is an inclined structure.
[0041] like Figure 1 As shown, designing the bottom of the overflow chamber 7 as an inclined structure can further promote the natural flow of copper liquid in the chamber, ensuring that the copper liquid can quickly converge to the lowest point of the overflow chamber 7, which not only helps to reduce the residence time of the copper liquid in the overflow chamber 7, and reduce the material loss that may be caused by long-term high-temperature exposure, but also facilitates subsequent drainage operations. The inclined bottom design also reduces the resistance of the copper liquid during flow, making the drainage process smoother and more efficient. At the same time, the design also takes into account the installation position of the drain valve 4 to ensure that when the drain valve is opened, the copper liquid can be quickly discharged along a predetermined path.
[0042] As an optional embodiment of the present utility model, optionally, the safety structure further includes a drain valve 4 , and the drain valve 4 is arranged at the lowest point of the bottom of the overflow chamber 7 .
[0043] like Figure 1 As shown, the drain valve 4 is a one-way valve, which is fixed at the lowest point of the bottom of the overflow chamber 7 by welding. The copper liquid in the overflow chamber 7 can be discharged smoothly through the drain valve 4, while external air or impurities cannot enter, thereby improving the convenience and efficiency of the drain operation. When drainage is required, the operator only needs to simply operate the drain valve 4 to achieve rapid and safe discharge of the copper liquid.
[0044] As an optional embodiment of the present utility model, optionally, the structural body 1 and the baffle 2 are both made of high-temperature resistant metal materials.
[0045] like Figure 1 As shown, the structure body 1 and the baffle 2 are made of nickel-based alloy or chromium-nickel-iron alloy. These two materials not only have excellent high temperature resistance, but can also maintain the stability and strength of the structure in extremely high temperature environments, thereby ensuring the reliability and durability of the entire safety structure.
[0046] As an optional embodiment of the present utility model, optionally, a visual window 8 is provided on the structural body 1 .
[0047] like Figure 1 As shown, the viewing window 8 is made of high-transparency, high-temperature-resistant glass or quartz material and is sealed and embedded in a suitable position of the structural body 1. The operator is allowed to directly observe the real-time conditions inside the furnace and the overflow chamber 7 without opening the cover.
[0048] As an optional embodiment of the present utility model, optionally, scale lines 9 are provided on the visual window 8 .
[0049] like Figure 1 As shown, the scale lines 9 further enhance the functionality of the viewing window 8 , allowing the operator to more accurately assess the height of the copper liquid inside the overflow chamber 7 .
[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A safety structure suitable for a high-zinc brass pressure casting furnace, wherein the safety structure is fixed on the furnace; characterized in that: The safety structure includes: Structural ontology (1); At least one overflow chamber (7) is arranged in the structural body (1); A baffle (2) is arranged in the structural body (1); An overflow sill (3) is arranged on the structural body (1), and the height of the overflow sill (3) is lower than the top of the structural body (1); A sealing cover is arranged on the structural body (1).
2. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: At least one baffle (2) is arranged in the structural body (1), and a plurality of through holes (5) are arranged at the bottom of the baffle (2).
3. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1 or 2, characterized in that: The top of the baffle (2) is a triangular structure (6).
4. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: The overflow chamber (7) is an elliptical structure.
5. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: The overflow ridge (3) is arranged to be inclined toward the overflow chamber (7).
6. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: The bottom of the overflow chamber (7) is an inclined structure.
7. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 6, characterized in that: The safety structure further comprises a drain valve (4), wherein the drain valve (4) is arranged at the lowest point of the bottom of the overflow chamber (7).
8. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: The structural body (1) and the baffle (2) are both made of high-temperature resistant metal material.
9. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 1, characterized in that: A visual window (8) is provided on the structural body (1).
10. A safety structure suitable for a high zinc brass pressure casting furnace as claimed in claim 9, characterized in that: The visual window (8) is provided with scale lines (9).