A constant temperature and steady flow device for casting
Patent Information
- Application Number
- CN202522589179.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
In traditional casting processes, the temperature of molten metal is difficult to control stably, and its flow state is easily affected by external interference, resulting in loose internal structure and surface defects in the castings, which affects the product qualification rate and performance.
A constant temperature and flow stabilization device is adopted, including heating and insulation components and flow stabilization protection mechanism. The temperature of the molten metal is kept constant by the heating device and insulation layer in the heating chamber, and a protective gas is introduced by the insertion pipe to form a stable micro-positive pressure environment, ensuring that the molten metal fills the cavity smoothly.
It enables precise control of molten metal temperature, reduces thermal stress defects, improves the density and mechanical properties of castings, ensures casting quality consistency and purity, and reduces internal and surface defects.
Smart Images
Figure CN224927035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting and pouring technology, specifically to a constant temperature and stable flow device for casting and pouring. Background Technology
[0002] Sand casting is a widely used method in casting production. This method utilizes molding sand and core sand with specific properties to prepare molds and cores through different compaction processes. It has advantages such as outstanding process flexibility, short production cycle, and significant cost-effectiveness. Casting, as the core process of sand casting, refers to the process of pouring molten metal into the mold cavity to form a part of the desired shape. This technology has a wide range of applications in industries such as automobile manufacturing, aerospace, and machinery equipment.
[0003] However, traditional casting processes have significant technical drawbacks: fluctuations in ambient temperature and uneven heat dissipation from equipment make it difficult to control the temperature of the molten metal stably; at the same time, the flow state of the molten metal is easily affected by external interference, which can lead to problems such as loose internal structure and surface defects in the casting, ultimately directly affecting the product qualification rate and performance. Utility Model Content
[0004] The purpose of this invention is to provide a constant temperature and stable flow device for casting and pouring, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a constant temperature and stable flow device for casting and pouring, including a pouring ladle, a cover plate provided on the pouring ladle via a positioning component, an inlet pipe provided on the cover plate, a connecting component provided on the inlet pipe, a flow stabilizing protection mechanism provided on the cover plate, a heating and heat preservation component provided on the inner wall of the pouring ladle, a support component provided on the outside of the pouring ladle, and a pouring pipe provided at the bottom of the pouring ladle.
[0006] Preferably, in order to facilitate the closing and protection of the cover plate and the casting ladle and prevent impurities such as outside air from entering the interior, the positioning component includes a positioning groove opened at the opening end of the casting ladle, a positioning ring matching the positioning groove is provided under the cover plate, and the casting ladle and the cover plate are also connected by a snap fastener.
[0007] Preferably, in order to facilitate connection and assembly with the connecting pipe and to facilitate the transportation of molten metal, the connecting assembly includes a connecting pipe disposed on the inlet pipe, and the connecting pipe and the inlet pipe are connected by a connecting flange.
[0008] Preferably, in order to ensure the stability of the molten metal flow during the pouring process and thus guarantee the quality of subsequent processing, the flow stabilization protection mechanism includes a plug seat installed on the cover plate, a plug pipe installed inside the plug seat, and a protective gas inlet pipe connected to the plug pipe.
[0009] Preferably, in order to facilitate the delivery of molten metal to the casting ladle and assist in the discharge of internal gas without affecting the delivery of molten metal, an exhaust pipe is provided on the cover plate, and a one-way valve is provided on the exhaust pipe.
[0010] Preferably, to ensure overall stability, the support assembly includes a fixing frame disposed outside the casting ladle, with supporting legs evenly spaced at the bottom of the fixing frame.
[0011] Preferably, in order to ensure a constant temperature of the molten metal in the ladle and thus guarantee the quality of the subsequent castings, the heating and insulation assembly includes a heating chamber formed in the inner wall of the ladle, a heating device installed in the heating chamber, and an insulation layer installed on the side wall of the heating chamber near the outside of the ladle.
[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) The heating and insulation components work together with the heating device and insulation layer in the heating chamber to achieve precise control of the temperature of the inner wall of the casting ladle, maintain the molten metal in the ideal solidification temperature range, reduce thermal stress defects caused by temperature fluctuations, such as shrinkage cavities and cracks, thereby improving the density and mechanical properties of the casting and ensuring the consistency of casting quality. (2) The flow stabilization protection mechanism introduces protective gas through the insertion pipe to form a stable micro-positive pressure environment in the casting ladle, suppressing the turbulence of molten metal and gas entrapment, ensuring that the molten metal fills the cavity smoothly and continuously, reducing internal defects such as porosity and slag holes, improving the dimensional accuracy and structural uniformity of the casting, and meeting the requirements of precision casting. (3) The positioning component adopts a positioning groove and positioning ring interlocking design, combined with the tower buckle connection structure, to ensure the sealing performance of the casting ladle, isolate the intrusion of external air and impurities, avoid metal molten metal oxidation pollution, thereby reducing surface defects and internal impurities of the casting, and improving the purity and surface quality of the casting. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of a constant temperature and stable flow device for casting and pouring proposed in this utility model; Figure 2 This is a schematic diagram of the separate structure of the casting ladle and cover plate in a constant temperature and stable flow device for casting proposed in this utility model; Figure 3 This is a schematic diagram of the structure on the cover plate of a constant temperature and stable flow device for casting and pouring proposed in this utility model; Figure 4 This is a partial structural diagram of the heating and heat preservation component in a constant temperature and stable flow device for casting proposed in this utility model.
[0014] In the diagram: 11. Casting ladle; 12. Cover plate; 13. Tower buckle; 14. Liquid inlet pipe; 15. Connecting pipe; 16. Connecting flange; 17. Casting pipe; 18. Fixing frame; 19. Support leg; 21. Protective gas inlet pipe; 22. Plug-in socket; 23. Exhaust pipe; 24. One-way valve; 25. Plug-in pipe; 31. Positioning groove; 32. Positioning ring; 41. Heating chamber; 42. Insulation layer; 43. Heating device. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figures 1-4 This utility model provides an embodiment of a constant temperature and stable flow device for casting pouring, including a pouring ladle 11. The pouring ladle 11 is equipped with a cover plate 12 via a positioning component, which can protect the pouring ladle 11 during use and prevent external air or impurities from entering the interior. The positioning component includes a positioning groove 31 formed at the open end of the pouring ladle 11. A positioning ring 32 matching the positioning groove 31 is provided under the cover plate 12, and the pouring ladle 11 and the cover plate 12 are connected by a buckle 13. The positioning ring 32 can be made of a high-temperature resistant sealing material such as a graphite gasket to ensure a sealing effect. A liquid inlet pipe 14 is provided on the cover plate 12, and a free connection component is connected to the liquid inlet pipe 14. Pipe 15 is connected to inlet pipe 14 via connecting flange 16. Pipe 15 facilitates the transport of molten metal and can be connected to molten metal ladles, etc., to facilitate the transport of molten metal into casting ladle 11 for subsequent casting processing. Casting ladle 11 is provided with casting pipe 17 at the bottom. Casting pipe 17 is provided with flow stabilizing core or flow control plug rod inside to assist in flow stabilization. This is a relatively mature technology and will not be described in detail here. Casting ladle 11 is provided with a support assembly on the outside. The support assembly includes a fixing frame 18 set on the outside of casting ladle 11. The fixing frame 18 is provided with support legs 19 at equal intervals at the bottom. The support legs 19 in the figure are partially shown. They can be connected and fixed to the ground, etc., to ensure the stability of casting ladle 11 during use.
[0017] Please see Figures 1-4To ensure constant temperature and stable flow during the pouring process, a flow stabilization protection mechanism is also provided on the cover plate 12. A heating and insulation component is installed on the inner wall of the pouring ladle 11. The flow stabilization protection mechanism includes a connector 22 on the cover plate 12, with a connector 25 inside the connector 22. A protective gas inlet pipe 21 is connected to the connector 25. The gas introduced into the protective gas inlet pipe 21 can be nitrogen or similar, and can be connected to a nitrogen cylinder or nitrogen generator (not shown in the figure). During the pouring process, the protective gas is introduced to prevent contact with air and oxidation, and to maintain a stable, slightly positive pressure inside the pouring ladle 11, ensuring a stable total pressure and a constant driving pressure of the molten metal at the outlet of the pouring pipe. The cover plate 12 is provided with an exhaust pipe 23, and the exhaust pipe 23 is provided with a one-way valve 24. When the molten metal enters the casting ladle 11 through the liquid inlet pipe 14, the gas inside the casting ladle 11 is discharged, which does not affect the delivery of the molten metal, and at the same time prevents the outside air from entering the interior. The heating and heat preservation component includes a heating chamber 41 opened in the inner wall of the casting ladle 11. A heating device 43 is provided in the heating chamber 41, and a heat preservation layer 42 is provided on the side wall of the heating chamber 41 near the outside of the casting ladle 11. The heating device 43 can be achieved by resistance heating or other methods to achieve heating and heat preservation. With the help of thermocouples or far-infrared temperature measurement in the casting ladle 11, the temperature inside the casting ladle 11 is kept constant.
[0018] Working Principle: In use, the casting ladle 11 is covered by the cover plate 12, and the positioning ring 32 enters the positioning groove 31 for insertion and positioning. It is then fixed by the buckle 13. The inlet pipe 14 and connecting pipe 15 are connected by the connecting flange 16, and the molten metal is transported through the connecting pipe 15 and the inlet pipe 14. At this time, the one-way valve 24 opens to discharge the gas in the casting ladle 11, ensuring that the molten metal enters the casting ladle 11. The heating device 43 operates to heat and maintain the temperature of the casting ladle 11, ensuring a constant temperature of the molten metal. During pouring, the one-way valve 24 closes, and protective gas is supplied through the protective gas inlet pipe 21, preventing contact with air. To prevent oxidation, the casting ladle 11 is kept under a stable, slightly positive pressure to maintain a stable total pressure and ensure that the driving pressure of the molten metal at the outlet of the casting pipe remains constant, thus ensuring a steady flow during casting and completing the casting process. When it is necessary to clean or repair the inside of the casting ladle 11, the connecting flange 16 is removed to separate the connecting pipe 15 from the liquid inlet pipe 14. Then, the protective gas inlet pipe 21 is removed from the plug pipe 25, the tower buckle 13 is opened, the cover plate 12 is pulled upward, and the positioning ring 32 is removed from the positioning groove 31. The casting ladle 11 is then opened to facilitate internal cleaning or replacement. The above operation is repeated for the next use to ensure constant temperature and steady flow during casting.
[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A constant temperature and stable flow device for casting and pouring, comprising a pouring ladle (11), characterized in that: The casting pot (11) is provided with a cover plate (12) via a positioning component. A liquid inlet pipe (14) is provided on the cover plate (12). A connecting component is provided on the liquid inlet pipe (14). A flow stabilization protection mechanism is also provided on the cover plate (12). A heating and heat preservation component is provided on the inner wall of the casting pot (11). A support component is provided on the outside of the casting pot (11). A casting pipe (17) is provided at the bottom of the casting pot (11).
2. The constant temperature and stable flow device for casting and pouring according to claim 1, characterized in that: The positioning component includes a positioning groove (31) opened at the opening end of the casting ladle (11), a positioning ring (32) matching the positioning groove (31) is provided under the cover plate (12), and the casting ladle (11) and the cover plate (12) are connected by a buckle (13).
3. The constant temperature and stable flow device for casting and pouring according to claim 2, characterized in that: The connection assembly includes a connecting pipe (15) disposed on the inlet pipe (14), and the connecting pipe (15) is connected to the inlet pipe (14) via a connecting flange (16).
4. The constant temperature and stable flow device for casting and pouring according to claim 3, characterized in that: The flow stabilization protection mechanism includes a plug-in seat (22) installed on the cover plate (12), a plug-in tube (25) is installed inside the plug-in seat (22), and a protective gas inlet tube (21) is connected to the plug-in tube (25).
5. A constant temperature and stable flow device for casting and pouring according to claim 4, characterized in that: An exhaust pipe (23) is provided on the cover plate (12), and a one-way valve (24) is provided on the exhaust pipe (23).
6. The constant temperature and stable flow device for casting and pouring according to claim 5, characterized in that: The support assembly includes a fixed frame (18) disposed outside the casting ladle (11), and support legs (19) are provided at equal intervals at the bottom of the fixed frame (18).
7. A constant temperature and stable flow device for casting and pouring according to claim 6, characterized in that: The heating and insulation component includes a heating cavity (41) opened in the inner wall of the casting ladle (11), a heating device (43) is provided in the heating cavity (41), and an insulation layer (42) is provided on the side wall of the heating cavity (41) near the outside of the casting ladle (11).