A pouring cup with steady flow slag removal and sealed flow guide function

Abstract

This invention discloses a pouring cup with stabilizing flow, slag removal, and sealing flow guiding functions, relating to the field of pouring cup technology. It includes a pouring cup body, inside which is a stabilizing flow and slag removal chamber and a sealing flow guiding interface. The stabilizing flow and slag removal chamber is located at the upper part of the pouring cup body, and its inner cavity structure is a stepped flow-blocking structure. The sealing flow guiding interface is located at the bottom of the pouring cup body, and a sealing structure is provided at the sealing flow guiding interface. This invention has stabilizing flow, slag removal, and sealing flow guiding functions, improving ease of use.

Description

Technical Field

[0001] This invention relates to the field of pouring cup technology, and in particular to a pouring cup with functions of stabilizing flow, removing slag, and sealing and guiding flow. Background Technology

[0002] In the field of casting technology, pipe bending casting is a common production process, with 90-degree or 180-degree pipe bending casting processes being crucial for meeting the needs of various industrial scenarios. However, traditional pipe bending casting processes face numerous challenges in actual production. On the one hand, the flow state of molten steel is difficult to control precisely during the casting process, easily leading to problems such as vortices, air intake, and slag entrapment. These problems severely affect the quality of the bent pipe, resulting in internal defects such as porosity and slag inclusions, thereby reducing the mechanical properties and service life of the bent pipe, increasing the product defect rate, and causing economic losses to the production enterprise. On the other hand, existing casting processes have shortcomings in the design and use of pouring cups. As a key component guiding molten steel into the mold, the performance of the pouring cup directly affects the quality and efficiency of casting. Traditional pouring cups have a simple structure and cannot effectively solve problems such as stabilizing the flow of molten steel, removing slag, and preventing air intake during the process, making it difficult to meet the requirements of modern industry for high-quality pipe bending casting. Therefore, developing a new 90-degree or 180-degree pipe bending casting process and a matching pouring cup is of significant practical importance.

[0003] In lost foam casting technology for steel, performance improvements of several key components play a crucial role in enhancing casting quality and production efficiency. Among them, the pouring cup, as the first point of entry for molten steel into the mold, directly affects the flow state of the molten steel and the casting quality. Existing pouring cups are ineffective in addressing issues such as swirling air intake and slag entrainment in molten steel, leading to internal defects in the castings and affecting their overall performance. Bearing housings and bearing seats, as important supporting components in mechanical equipment, require extremely high precision and strength. In traditional casting processes, limitations in technology and molds easily result in dimensional deviations and uneven internal structures, affecting their assembly accuracy and service life with the equipment. The blast furnace door, a critical component in lime kiln projects, directly impacts the production efficiency and safety of the lime kiln. However, existing blast furnace doors suffer from easy deformation and poor sealing during casting, making it difficult to meet the high-temperature, high-pressure working environment requirements of lime kilns. In addition, components such as lost foam casting sand boxes, toothed plates, and chain grate machines (metallurgical sintering equipment) grates also face problems under traditional casting processes, such as sand boxes being too heavy, easily deformed, and having a short lifespan, and toothed plates and grates having poor wear resistance and low dimensional accuracy, which seriously restrict the development of related industries.

[0004] To address the problems encountered in the casting process of pouring cups, the industry has been seeking innovative solutions. In terms of invention patents, innovations in pouring cups mainly focus on methods, processes, and formulations. For example, the innovative stepped / restricted pouring cup structure method, which prevents slag entrapment and air intake, modifies the internal flow channels of the pouring cup, allowing molten steel to first flow steadily, then remove slag, and finally smoothly enter the gating, effectively avoiding vortex generation and improving casting quality. The innovative sealing and guiding method for pouring cups used in lost foam negative pressure casting solves the problems of air leakage and negative pressure failure caused by poor sealing between the bottom of the pouring cup and the gating, ensuring the stability of the casting process. In terms of inventions, solving the problems of vortex air intake and slag entrapment in molten steel is a key direction for innovation in pouring cups. In the field of sand boxes, traditional sand boxes, due to their use of single materials and simple structures, suffer from problems such as being too heavy, easily deformed, and having a short lifespan. With the increasing demands for efficiency and quality in industrial production, lightweight, high-strength profile sand boxes have emerged. By employing welded steel sections and plates, and optimizing the design of the reinforcing ribs, the weight of the sand box is effectively reduced, while its strength and rigidity are improved, extending its service life and meeting the needs of modern casting production. (Invention Content)

[0005] In order to at least solve one of the above-mentioned technical problems, the present invention aims to provide a pouring cup with the functions of stabilizing flow, removing slag and sealing and guiding flow, thereby improving the ease of use.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pouring cup with stabilizing flow, slag removal, and sealing flow guiding functions includes a pouring cup body. The pouring cup body has a stabilizing flow and slag removal chamber and a sealing flow guiding interface inside. The stabilizing flow and slag removal chamber is located at the upper part of the pouring cup body, and the inner cavity structure of the stabilizing flow and slag removal chamber is set as a stepped flow-blocking structure. The sealing flow guiding interface is located at the bottom of the pouring cup body, and a sealing structure is provided at the sealing flow guiding interface.

[0008] Preferably, the pouring cup body is made of high-temperature resistant cast steel.

[0009] Preferably, the sealing structure is provided as intermittently arranged bosses, and the outer surface of the bosses is provided with a frosted surface or a sealing gasket.

[0010] Preferably, the flow channel of the pouring cup body includes a circular arc transition structure.

[0011] Preferably, the pouring cup body is designed with a symmetrical structure.

[0012] Preferably, the stepped flow-blocking structure includes at least two stepped platforms of different heights, with adjacent stepped platforms connected by a smooth ramp transition, and each stepped platform has a wear-resistant coating on its surface.

[0013] Preferably, the high-temperature resistant cast steel material contains molybdenum and chromium, wherein the content of molybdenum is 2%-5% and the content of chromium is 10%-15%.

[0014] Preferably, the cross-sectional shape of the boss is semi-circular or trapezoidal, and the spacing between adjacent bosses is 3mm-8mm.

[0015] Preferably, the radius of the arc transition structure is 10mm-20mm, and the arc transition structure is set at the connection between the inner wall of the flow channel of the pouring cup body and the stabilizing flow removal chamber and the sealing flow guide interface.

[0016] Preferably, the symmetrical structure is symmetrical about the central axis of the pouring cup body, and the two sides of the symmetrical structure are provided with reinforcing ribs with a thickness of 2mm-5mm.

[0017] The present invention has the following beneficial effects:

[0018] I. Improving the Casting Quality of Bent Pipes: In the casting process of bent pipes, traditional pouring cups struggle to precisely control the flow of molten steel, easily leading to problems such as vortices, air intake, and slag entrapment. This results in defects such as porosity and slag inclusions inside the bent pipe, reducing mechanical properties and service life, and increasing the defect rate. The pouring cup of this invention features a flow-stabilizing and slag-removing chamber with a stepped flow-blocking structure. This structure allows the molten steel to first stabilize its flow after entering the pouring cup, then remove slag, and finally smoothly enter the runner. This effectively avoids the generation of vortices, reduces the entrapment of impurities in the molten steel, thereby significantly improving the casting quality of the bent pipes, reducing the defect rate, and minimizing economic losses for enterprises.

[0019] II. Ensuring the stability of the casting process: In existing casting processes, poor sealing between the bottom of the pouring cup and the gating system can lead to air leakage and negative pressure failure, affecting the stability of the casting process. The pouring cup of this invention features a sealed flow guide interface at the bottom, with a sealing structure at the interface. This sealing structure effectively solves the problem of poor sealing between the bottom of the pouring cup and the gating system, preventing air leakage and negative pressure failure, ensuring the stable progress of the casting process, and contributing to improved casting quality and production efficiency.

[0020] Third, enhanced durability of the pouring cup; the pouring cup body of this invention is made of high-temperature resistant cast steel. During the casting process, the temperature of molten steel is extremely high, and ordinary materials cannot withstand such high temperatures and are prone to damage. However, high-temperature resistant cast steel has excellent high-temperature resistance, can withstand the high-temperature impact of molten steel, and is not easily deformed or damaged, thereby extending the service life of the pouring cup, reducing the frequency of pouring cup replacement, and lowering production costs.

[0021] Fourth, improved sealing performance; the sealing structure features intermittently arranged bosses, with a frosted surface or sealing gasket on the outer surface of each boss. The frosted surface increases friction between the contact surfaces, resulting in a tighter seal; the sealing gasket fills the tiny gaps between the contact surfaces, further enhancing the sealing effect. This unique sealing structure design effectively prevents molten steel leakage, ensuring the smooth progress of the casting process.

[0022] 5. Optimize the flow state of molten steel; the flow channel of the pouring cup body includes a rounded transition structure. This structure allows the molten steel to flow more smoothly, reduces friction and collision between the molten steel and the flow channel wall, reduces energy loss, and also helps to further stabilize the flow state of the molten steel, avoid vortex and air intake, and improve casting quality.

[0023] VI. Easy to install and use; the pouring cup body is designed with a symmetrical structure. The symmetrical structure makes installation of the pouring cup easier, eliminating the need to consider orientation and reducing installation difficulty and time. At the same time, the symmetrical structure also helps ensure uniform stress distribution during use, improving its stability and reliability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a simplified three-dimensional schematic diagram of an embodiment of the present invention.

[0026] Figure 2 This is a cross-sectional view of the pouring cup body according to an embodiment of the present invention.

[0027] Figure 3 This is a partial cross-sectional view of the pouring cup body according to an embodiment of the present invention.

[0028] In the figure: 1. Pour cup body; 2. Flow stabilizing and slag removal chamber; 201. Stepped flow obstruction structure; 211. Boss; 3. Sealed flow guide interface; 301. Sealing structure. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 3 The aforementioned pouring cup with stabilizing flow, slag removal, and sealing flow guiding functions includes a pouring cup body 1. The pouring cup body 1 has a stabilizing flow and slag removal chamber 2 and a sealing flow guiding interface 3 inside. The stabilizing flow and slag removal chamber 2 is located at the upper part of the pouring cup body 1, and the inner cavity structure of the stabilizing flow and slag removal chamber 2 is set as a stepped flow-blocking structure 201. The sealing flow guiding interface 3 is located at the bottom of the pouring cup body 1, and a sealing structure 301 is provided at the sealing flow guiding interface 3.

[0031] like Figures 1 to 3 As shown, when molten steel is poured from the gate into the pouring cup, it first enters the stabilizing and slag-removing chamber 2 located at the top of the pouring cup body 1. The internal structure of this stabilizing and slag-removing chamber 2 adopts a stepped flow-blocking structure 201. During the flow, the molten steel passes through steps of different heights and sizes. Each step obstructs the flow of the molten steel, changing its velocity and direction. Under the action of the stepped flow-blocking structure 201, the flow state of the molten steel gradually changes from turbulent to steady flow. Simultaneously, due to the change in velocity and direction during the flow, denser impurities (such as slag) in the molten steel separate from the molten steel due to inertia, depositing at the bottom of the stabilizing and slag-removing chamber 2 or adhering to the surface of the steps, thus achieving the purpose of slag removal. After stabilization and slag removal, the molten steel can enter the subsequent gating system more smoothly, reducing internal defects in the casting caused by turbulent flow and slag entrapment, and improving the quality of the casting.

[0032] The sealing guide interface 3 is located at the bottom of the pouring cup body 1, and its function is to guide the molten steel, after stabilization and slag removal, into the runner. The sealing structure 301 provided at the sealing guide interface 3 effectively prevents leakage of molten steel during its flow from the pouring cup into the runner. For example, the sealing structure 301 may use intermittently arranged bosses 211, with a frosted surface or sealing gasket on the outer surface of the bosses 211. When the pouring cup is connected to the runner, the bosses 211 can mate with the corresponding structure on the runner; the frosted surface increases the friction of the contact surfaces, making the connection tighter; the sealing gasket fills the tiny gaps between the contact surfaces, further preventing molten steel leakage. This ensures the stability of the negative pressure during casting, avoids casting defects caused by air leakage, ensures that the molten steel flows smoothly into the mold along the predetermined path and flow rate, and improves the stability and success rate of casting.

[0033] Through the aforementioned design of stabilizing flow, removing slag, and sealing the flow, this pouring cup significantly improves the flow state of molten steel and casting quality in practical casting applications. Regarding stabilizing flow and removing slag, the stepped flow-blocking structure 201 effectively separates impurities from the molten steel, making the molten steel entering the gating system purer, reducing defects such as porosity and inclusions inside the casting, and improving the mechanical properties and service life of the casting. Regarding sealing the flow, the sealing structure 301 ensures that molten steel does not leak during transmission, maintaining a stable negative pressure environment during the casting process, avoiding casting failures due to air leakage, and improving production efficiency and product qualification rate.

[0034] like Figures 1 to 3 As shown, the pouring cup body 1 is made of high-temperature resistant cast steel. The sealing structure 301 is configured as intermittently arranged bosses 211, with a frosted surface or sealing gasket on the outer surface of the bosses 211. During the casting process, molten steel reaches extremely high temperatures, typically exceeding 1000 degrees Celsius. Ordinary materials would rapidly soften, deform, or even melt under such high temperatures, unable to withstand the impact and high temperature of the molten steel, thus failing to guarantee the normal use of the pouring cup and the smooth progress of the casting process. High-temperature resistant cast steel, however, possesses excellent high-temperature stability and strength, maintaining its shape and structural integrity at high temperatures, and is not easily deformed or damaged. This allows the pouring cup body 1 to withstand the high temperature of the molten steel, providing a stable container for it and ensuring that the molten steel flows into the subsequent casting system according to the predetermined path and method, laying the foundation for high-quality casting.

[0035] When the pouring cup is connected to other components such as the runner, the intermittently arranged bosses 211 increase the contact area and friction at the connection point. During installation, the bosses 211 can engage with protrusions or corresponding structures on the other component, creating a mechanical locking effect. This design allows for a tighter fit between the pouring cup and the connecting component, reducing gaps caused by loose connections and effectively preventing molten steel from leaking out of the connection during flow.

[0036] The frosted surface has a rough texture, which increases the friction between the pouring cup and the connecting parts when they come into contact. This increased friction further enhances the tightness of the connection, making it less likely for the pouring cup and connecting parts to move relative to each other under the pressure and flow impact of molten steel, thus ensuring a better seal and preventing molten steel leakage. The sealing gasket is usually made of materials with elasticity and high-temperature resistance, such as silicone rubber or fluororubber. When the pouring cup and connecting parts are pressed together, the sealing gasket undergoes elastic deformation, filling the tiny gaps between the connecting parts. These tiny gaps, even if imperceptible to the naked eye, can become channels for molten steel leakage. The elastic deformation of the sealing gasket effectively seals these gaps, forming a reliable sealing barrier to prevent molten steel leakage, ensuring a stable negative pressure environment during the casting process, and avoiding casting defects caused by air leakage.

[0037] like Figures 1 to 3 As shown, the flow channel of the pouring cup body 1 includes a circular arc transition structure. The pouring cup body 1 is designed with a symmetrical structure. The circular arc transition structure in the flow channel of the pouring cup body 1 is based on fluid mechanics principles. When molten steel flows from the gate into the pouring cup, its flow is relatively vigorous. If there are right angles or sharp turns in the flow channel, the molten steel will generate significant impact force and turbulence when flowing through these parts. Turbulence makes it difficult to separate gases and impurities in the molten steel, and may also cause molten steel to splash, affecting the stability of the subsequent casting process and the quality of the casting. The circular arc transition structure makes the flow path of the molten steel smoother. When the molten steel flows through the arc part, its flow direction gradually changes, reducing the impact force and turbulence caused by sudden turns. In this way, the molten steel can continue to flow in a relatively stable state, which is conducive to the floating of impurities and the discharge of gases, thereby improving the purity of the molten steel and laying the foundation for producing high-quality castings.

[0038] The symmetrical structure of the pouring cup body 1 is primarily to ensure the uniformity of molten steel flow within the cup. During the casting process, molten steel enters the pouring cup from the gate and diffuses outwards. If the pouring cup is not symmetrical, the molten steel will experience uneven resistance in different directions during flow, resulting in an uneven distribution of molten steel within the cup. This uneven flow may cause a situation where the flow rate is high on one side and low on the other when the molten steel enters the runner, thus affecting the forming quality of various parts of the casting and easily causing problems such as dimensional deviations and uneven internal structure. A symmetrical structure, on the other hand, ensures that the molten steel experiences uniform resistance within the pouring cup, guaranteeing that the flow velocity and flow rate of the molten steel are basically consistent in all directions. This allows the molten steel to enter the runner evenly, ultimately improving the overall quality of the casting.

[0039] By incorporating a circular arc transition structure within the flow channel of the pouring cup body 1, the impact and turbulence during molten steel flow are effectively reduced, resulting in smoother flow. This facilitates the separation of impurities and gases, improves the purity of the molten steel, and reduces the probability of defects such as porosity and inclusions within the casting. Simultaneously, designing the pouring cup body 1 as a symmetrical structure ensures uniform flow of molten steel within the cup, allowing it to enter the runner evenly. This avoids dimensional deviations and uneven internal structure caused by uneven steel distribution, significantly improving casting quality and consistency, and increasing the yield rate of casting production.

[0040] like Figures 1 to 3 As shown, the stepped flow-blocking structure 201 includes at least two stepped platforms of different heights, with adjacent platforms connected by a smooth ramp transition. Each stepped platform has a wear-resistant coating on its surface. When molten metal flows into the stabilizing and slag-removing chamber 2 of the pouring cup body 1, the stepped flow-blocking structure 201, with its at least two stepped platforms of different heights and smooth ramp transitions between adjacent platforms, causes the molten metal to continuously change its flow direction and speed as it passes through these platforms. The stepped platforms of different heights create multiple obstructions and buffers for the molten metal, causing impurities such as slag in the molten metal to separate from the main body of the molten metal due to inertia. The slag will deposit on the surface of the stepped platforms or on the ramps. Simultaneously, the wear-resistant coating on the surface of each stepped platform enhances its resistance to molten metal erosion, preventing wear during long-term use and ensuring the stable and durable stabilizing and slag-removing effect of the stepped flow-blocking structure 201.

[0041] like Figures 1 to 3 As shown, the high-temperature resistant cast steel material contains molybdenum and chromium, with molybdenum content ranging from 2% to 5% and chromium content from 10% to 15%. Molybdenum improves the strength and hardness of the steel at high temperatures and enhances its creep resistance, allowing the pouring cup body 1 to maintain a stable shape and structure even under prolonged exposure to molten metal and high-temperature environments, preventing deformation. Chromium forms a dense oxide film on the steel surface, effectively preventing further contact between oxygen and other corrosive media, thus improving the steel's oxidation and corrosion resistance and extending the service life of the pouring cup body 1. The optimal ratio of 2% to 5% molybdenum and 10% to 15% chromium, determined through extensive experimentation and research, fully leverages the synergistic effect of the two elements to achieve optimal high-temperature performance and corrosion resistance.

[0042] like Figures 1 to 3As shown, the cross-sectional shape of the boss 211 is semi-circular or trapezoidal, and the spacing between adjacent bosses 211 is 3mm-8mm. The semi-circular or trapezoidal cross-sectional shape of the boss 211 provides a larger contact area when in contact with the mating component at the sealing guide interface 3, enhancing the sealing effect. Simultaneously, the spacing between adjacent bosses 211 is set to 3mm-8mm. This distance range ensures sufficient space for installing a sealing gasket (if a gasket sealing method is used), allowing the gasket to fill evenly between the bosses 211, while preventing excessive spacing that could lead to a poor seal. If the outer surface of the boss 211 is frosted, the frosted surface can increase the friction with the mating component, further improving the sealing performance; if a sealing gasket is used, the gasket will elastically deform under pressure, filling the tiny gaps between the bosses 211 and achieving a reliable seal.

[0043] like Figures 1 to 3 As shown, the radius of the arc transition structure is set to 10mm-20mm, and it is located at the connection between the inner wall of the flow channel of the pouring cup body 1 and the stabilizing and slag-removing chamber 2 and the sealing guide port 3. When the molten metal flows in the pouring cup body 1, the flow direction of the molten metal can be smoothly changed when passing through these connection parts due to the presence of the arc transition structure, avoiding eddies caused by sudden right-angle turns. Eddies can cause slag in the molten metal to be re-entered into the main body of the molten metal, affecting the stabilizing and slag-removing effect, and also increasing the flow resistance of the molten metal and reducing the flow velocity. The arc transition structure effectively reduces the occurrence of this situation, allowing the molten metal to flow smoothly.

[0044] like Figures 1 to 3 As shown, the pouring cup body 1 is designed with a symmetrical structure about its central axis. This symmetrical design ensures that the pouring cup body 1 is subjected to uniform stress in all parts when subjected to the pressure and impact of molten metal, avoiding localized stress concentration caused by uneven stress distribution, thereby reducing the possibility of deformation or damage to the pouring cup body 1. Reinforcing ribs with a thickness of 2mm-5mm are provided on both sides of the symmetrical structure, further enhancing the overall structural strength and rigidity of the pouring cup body 1. When molten metal flows into the pouring cup body 1, the reinforcing ribs can share some of the pressure exerted by the molten metal on the inner wall of the pouring cup body 1, improving the pouring cup body 1's resistance to deformation.

[0045] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A pouring cup with functions of stabilizing flow, removing slag, and sealing and guiding flow, comprising a pouring cup body (1), characterized in that; The pouring cup body (1) is provided with a flow stabilizing and slag removal chamber (2) and a sealing flow guiding interface (3). The flow stabilizing and slag removal chamber (2) is located at the upper part of the pouring cup body (1), and the inner cavity structure of the flow stabilizing and slag removal chamber (2) is set as a stepped flow obstruction structure (201). The sealing flow guiding interface (3) is located at the bottom of the pouring cup body (1), and a sealing structure (301) is provided at the sealing flow guiding interface (3).

2. The pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 1, characterized in that: The pouring cup body (1) is made of high-temperature resistant cast steel.

3. A pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 2, characterized in that: The sealing structure (301) is provided as a discontinuously arranged boss (211), and the outer surface of the boss (211) is provided with a frosted surface or a sealing gasket.

4. A pouring cup with flow stabilization, slag removal, and sealing / guiding functions according to claim 3, characterized in that: The flow channel of the pouring cup body (1) includes a circular arc transition structure.

5. A pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 1, characterized in that: The pouring cup body (1) is designed as a symmetrical structure.

6. A pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 1, characterized in that: The stepped flow-blocking structure (201) includes at least two stepped platforms of different heights, adjacent stepped platforms are connected by a smooth ramp transition, and the surface of each stepped platform is provided with a wear-resistant coating.

7. A pouring cup with flow stabilization, slag removal, and sealing / guiding functions according to claim 2, characterized in that: The high-temperature resistant cast steel material contains molybdenum and chromium, with molybdenum content of 2%-5% and chromium content of 10%-15%.

8. A pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 3, characterized in that: The cross-sectional shape of the boss (211) is semi-circular or trapezoidal, and the interval between adjacent bosses (211) is 3mm-8mm.

9. A pouring cup with flow stabilization, slag removal, and sealing / guiding functions according to claim 4, characterized in that: The radius of the arc transition structure is 10mm-20mm. The arc transition structure is set at the connection between the inner wall of the flow channel of the pouring cup body (1) and the stabilizing flow removal chamber (2) and the sealing flow guide interface (3).

10. A pouring cup with stabilizing flow, slag removal, and sealing / guiding functions according to claim 5, characterized in that: The symmetrical structure is symmetrical about the central axis of the pouring cup body (1), and the two sides of the symmetrical structure are provided with reinforcing ribs with a thickness of 2mm-5mm.

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