A flow control and slag avoiding single gate pouring riser system and a pouring mold

Abstract

This invention relates to the field of casting technology. It discloses a flow-controlled, slag-avoiding single-line gating and riser system and a casting mold, including a single-line gating precisely connected to the casting mold body. A core mechanism is integrated at the outlet end of the single-line gating, corresponding to the cavity inlet, to achieve flow control and anti-overflow functions. The core mechanism includes a folding mechanism and an anti-deviation mechanism, which work together to achieve precise control of the molten metal flow rate, avoiding deviation and leakage. The single-line gating interior is equipped with an anti-nodule mechanical scraping structure and a stepped slag-avoiding structure, used respectively for real-time cleaning of metal nodules on the inner wall of the gating, layering and settling of slag, and guiding the smooth flow of molten metal. The system has a reasonable structure, reliable operation, and can effectively reduce internal defects in castings, improve casting quality, and increase production efficiency.

Description

Technical Field

[0001] This invention relates to the field of casting technology, specifically to a flow-controlled, slag-avoiding one-line gating riser system and a casting mold. Background Technology

[0002] In the casting production process, the gating and riser system is a key component to ensure the quality of casting. Its flow control accuracy, slag avoidance effect, and anti-backflow performance directly affect the incidence of internal defects in the casting. Currently, existing single-line gating and riser systems generally have many technical drawbacks: during pouring, the flow of molten metal is prone to generating eddies, causing slag to be drawn into the mold cavity, forming slag inclusion defects, which seriously affect the mechanical properties of the casting. Especially for complex pipeline castings, slag inclusions and other excess materials may also cause subsequent malfunctions; the inner wall of the gating is prone to forming metal nodules due to the adhesion of high-temperature molten metal, which can easily cause gating blockage with long-term use, resulting in poor molten metal flow and affecting pouring efficiency.

[0003] Meanwhile, existing flow control mechanisms often lack precise control capabilities, making it difficult to stably control the flow rate of molten metal. They are also prone to backflow, resulting in molten metal waste and potential defects such as cold shuts and incomplete pouring due to poor sealing. Furthermore, some flow control mechanisms are prone to deviation during movement, leading to flow control failure. Moreover, the removal of nodules largely relies on manual labor, which is inefficient and incomplete.

[0004] In view of the shortcomings of the existing technology, there is an urgent need for a flow-controlled and slag-avoiding one-line gating riser system and a casting mold to solve the pain points of the existing technology and improve the casting quality and production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a flow-controlled, slag-avoiding, one-line pouring riser system and a pouring mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flow-controlling and slag-avoiding single-line gating and riser system and a casting mold, comprising a single-line gating, an outlet end, a self-resetting flow-controlling and anti-overflow mechanism, an anti-nodule mechanical scraping structure, a casting mold body, and a stepped slag-avoiding structure. The single-line gating is precisely connected to the casting mold body, and the self-resetting flow-controlling and anti-overflow mechanism is integrated into the outlet end of the single-line gating and precisely corresponds to the cavity inlet of the casting mold body, and is the core component for achieving flow control and anti-overflow.

[0007] The self-resetting flow control and anti-overflow mechanism includes a folding mechanism and an anti-deviation mechanism. The folding mechanism achieves precise control of the flow rate of the molten metal above the outlet end by folding and bending downwards, ensuring a stable outflow of the molten metal.

[0008] The anti-deviation mechanism is used to prevent the self-resetting flow control and anti-backflow mechanism from deviating from its original track during movement, ensuring the accuracy and reliability of flow control and anti-backflow actions;

[0009] The anti-nodule mechanical scraping structure is installed inside the straight gate, located upstream of the self-resetting flow control and anti-overflow mechanism, and is adapted to the inner wall of the gate. It is used to clean the metal nodules adhering to the inner wall of the gate in real time, avoid gate blockage, and ensure the flow control and slag avoidance effect.

[0010] The stepped slag-avoiding structure is set inside the straight gate and is located upstream of the anti-nodulation mechanical scraping structure. It includes a layer of inclined slag-blocking platform. Each layer of slag-blocking platform is evenly distributed along the gate axis and is integrally formed with the inner wall of the gate.

[0011] Each slag baffle is designed with an arc-shaped flow guide surface, which can use the gravity of the molten metal to achieve stratified sedimentation of molten slag, while guiding the molten metal to flow smoothly, avoiding the phenomenon of eddy slag entrapment, effectively reducing slag inclusion defects inside the casting, and improving the casting forming quality.

[0012] As a preferred embodiment of the present invention, the folding mechanism includes a support plate, the inner top side of the support plate is connected to the outer surface of the inlet gate, an anti-deviation mechanism is connected to the center of the inner side of the support plate, a first driving block is fixedly connected to one end of the bottom inner side of the support plate, a rotating shaft is correspondingly connected to the output shaft end of the first driving block, and a first folding rod is fixedly connected to the center of the rotating shaft.

[0013] As a preferred embodiment of the present invention, one end of a second folding rod is movably connected to both sides of the top of the first folding rod, and a reset baffle is movably connected to the inner side of the other end of the two second folding rods.

[0014] The reset baffle is polished to reduce the adhesion of molten metal. The edge of the reset baffle fits tightly with the outlet end, and a high-temperature resistant graphite gasket is embedded at the fit to ensure reliable sealing.

[0015] As a preferred embodiment of the present invention, the anti-deviation mechanism includes two fixed plates, the bottom of both fixed plates being connected to the inner center of the support plate, and the top of both fixed plates being movably connected to a connecting block, with the top of the connecting block being fixedly connected to the bottom of the reset baffle.

[0016] As a preferred embodiment of the present invention, a sliding wheel is movably connected to the inner groove of the connecting block, and an arc-shaped plate is movably connected to the outer surface of the sliding wheel, with the bottom of the arc-shaped plate connected to the center of the support plate.

[0017] As a preferred embodiment of the present invention, the anti-tumor mechanical scraping structure includes a second driving block, the bottom of which is connected to a slot block, and the bottom groove of the slot block is movably connected to one end of two first movable rods, the other end of which is movably connected to a rotatable scraping rod.

[0018] As a preferred embodiment of the present invention, the top of each of the two rotatable scraping rods is movably connected to one end of two second movable rods, and the other end of the four second movable rods is movably connected to two connecting plates, with the inner side of the two connecting plates correspondingly connected to the outer side of the second driving block.

[0019] As a preferred embodiment of the present invention, the rotatable scraper is made of high-strength wear-resistant alloy material, and a plurality of scraping teeth are evenly arranged on the surface of the rotatable scraper. The size of the scraping teeth is adapted to the inner diameter of the gate inner wall, and the ends of the scraping teeth are tightly fitted to the gate inner wall to ensure the scraping effect.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) A flow control and slag avoidance one-line pouring riser system and a pouring mold, wherein the first driving block drives the rotating shaft to rotate, thereby driving the first folding rod connected to the center of the rotating shaft to shift downward, and simultaneously driving one end of the second folding rod connected to the top of the first folding rod to fold, so that the reset baffle moves downward to form an opening for material discharge, which can accurately control the amount of molten metal flowing out of the outlet end, ensuring that the molten metal is stably injected into the cavity of the pouring mold body, and avoiding the flow rate being too large or too small, which would affect the casting.

[0022] (2) A flow control and slag avoidance one-line pouring riser system and pouring mold, by polishing the surface of the reset baffle, the adhesion of molten metal to its surface can be effectively reduced, and the cleaning difficulty can be reduced; at the same time, the reset baffle is tightly fitted to the outlet end, and with the high temperature resistant sealing gasket of graphite material, the sealing reliability is guaranteed, and the waste and molding defects caused by molten metal leakage are avoided.

[0023] (3) A flow control and slag avoidance one-line pouring riser system and pouring mold, which is fixed to the center of the inner side of the support plate by a fixing plate and the connecting block is fixed to the bottom of the reset baffle, so that when the reset baffle moves, the end fixedly connected to the connecting block remains fixed and only flips in place, avoiding the reset baffle from shifting and causing flow control failure, and ensuring that the flow control action of the folding mechanism is accurate and reliable.

[0024] (4) A flow control and slag avoidance one-line pouring riser system and pouring mold, wherein when the connecting block moves with the reset baffle, the sliding wheel at the inner groove of the baffle slides on the arc surface of the arc plate, which can stabilize the movement direction of the entire mechanism, prevent the self-resetting flow control and anti-overflow mechanism from deviating from the original track, and improve the flexibility of the mechanism movement, and reduce the impact of movement jamming on the flow control effect.

[0025] (5) A flow control and slag avoidance one-line gating riser system and casting mold, wherein the second driving block drives the slot block to move downward, thereby causing the two first movable rods at the groove of the slot block to expand to both sides, thereby driving the rotatable scraper to move. At the same time, the second movable rod connected to the top of the rotatable scraper works in coordination, so that the rotatable scraper fits the inner wall of the gating of different widths. With the close fit between the scraper teeth and the inner wall of the gating, the metal nodules adhering to the inner wall of the gating can be thoroughly cleaned.

[0026] ( ) A flow-controlling and slag-avoiding one-line gating and riser system and casting mold, wherein the rotatable scraper rod is made of high-strength wear-resistant alloy material and the surface is uniformly set with scraping teeth, which not only improves the service life of the scraping structure and avoids frequent replacement of parts, but also continuously prevents the gating gate from clogging, ensures smooth flow of molten metal, and indirectly ensures stable flow control and slag avoidance effects.

[0027] (7) A flow control and slag avoidance one-line gating riser system and casting mold, wherein a stepped slag avoidance structure with a single layer of inclined slag-blocking platform is evenly distributed along the gating axis, and each layer of slag-blocking platform is designed as an arc-shaped flow guide surface, which can utilize the gravity of the molten metal to achieve the stratified sedimentation of molten slag, while guiding the molten metal to flow smoothly, avoiding the phenomenon of eddy current slag rolling, effectively reducing slag inclusion defects inside the casting, and significantly improving the casting forming quality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the self-resetting flow control and anti-overflow mechanism of the present invention.

[0031] Figure 4 This is a schematic diagram of the folding mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the anti-deviation mechanism of the present invention;

[0033] Figure 6 This is a schematic diagram of the connection relationship inside the support plate of the present invention;

[0034] Figure 7 This is a schematic diagram of the anti-tumor mechanical scraping structure of the present invention;

[0035] Figure 8 This is a schematic diagram showing the connection relationship of the outer surface of the rotatable scraper rod of the present invention.

[0036] In the diagram: 2. Linear gate; 3. Outlet end; 4. Self-resetting flow control and anti-overflow mechanism; 41. Folding mechanism; 411. Support plate; 412. First drive block; 413. Rotating shaft; 414. First folding rod; 415. Second folding rod; 416. Reset baffle; 417. High-temperature resistant sealing gasket; 42. Anti-deviation mechanism; 421. Fixing plate; 422. Connecting block; 423. Sliding wheel; 424. Arc plate; 5. Anti-nodulation mechanical scraping structure; 51. Second drive block; 52. Slot block; 53. First movable rod; 54. Rotatable scraping rod; 541. Scraping teeth; 55. Second movable rod; 56. Connecting plate; 6. Casting mold body; 7. Stepped slag-avoiding structure; 71. Slag-blocking platform; 72. Arc-shaped guide surface. Detailed Implementation

[0037] 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.

[0038] Example: Please refer to Figure 1-2 A flow-controlling and slag-avoiding single-line gating and riser system and a casting mold are disclosed. The system includes a single-line gating 2, an outlet end 3, a self-resetting flow-controlling and anti-overflow mechanism 4, an anti-nodule mechanical scraping structure 5, a casting mold body 6, and a stepped slag-avoiding structure 7. The single-line gating 2 is precisely connected to the casting mold body 6. The self-resetting flow-controlling and anti-overflow mechanism 4 is integrated into the outlet end 3 of the single-line gating 2 and precisely corresponds to the cavity inlet of the casting mold body 6. It is the core component for achieving flow control and anti-overflow.

[0039] The self-resetting flow control and anti-overflow mechanism 4 includes a folding mechanism 41 and an anti-deviation mechanism 42. The folding mechanism 41 achieves precise control of the flow rate of the molten metal above the outlet end 3 by folding and bending downwards, ensuring a stable outflow of the molten metal.

[0040] The anti-deviation mechanism 42 is used to prevent the self-resetting flow control and anti-backflow mechanism 4 from deviating from its original track during movement, ensuring the accuracy and reliability of the flow control and anti-backflow actions.

[0041] The anti-nodule mechanical scraping structure 5 is set inside the straight gate 2, located upstream of the self-resetting flow control and anti-overflow mechanism 4, and is adapted to the inner wall of the gate. It is used to clean the metal nodules adhering to the inner wall of the gate in real time, avoid gate blockage, and ensure the flow control and slag avoidance effect.

[0042] The stepped slag-avoiding structure 7 is set inside the straight gate 2, located upstream of the anti-nodule mechanical scraping structure 5, and includes 3-4 layers of inclined slag-blocking platforms 71. Each layer of slag-blocking platforms 71 is evenly distributed along the gate axis and is integrally formed with the inner wall of the gate.

[0043] Each slag baffle 71 is designed with an arc-shaped guide surface 72, which can utilize the gravity of the molten metal to achieve stratified sedimentation of molten slag, while guiding the molten metal to flow smoothly, avoiding the phenomenon of eddy current slag entrainment, effectively reducing slag inclusion defects inside the casting, and improving the casting forming quality.

[0044] Example 2: Based on Example 1, as follows Figure 3-8 As shown, the folding mechanism 41 includes a support plate 411. The inner top side of the support plate 411 is connected to the outer surface of the inlet 2. An anti-deviation mechanism 42 is provided at the center of the inner side of the support plate 411, and the center of the inner side of the support plate 411 is connected to the bottom of the anti-deviation mechanism 42. A first driving block 412 is provided at one end of the bottom inner side of the support plate 411, and the bottom inner side of the support plate 411 is fixedly connected to the outer side of the first driving block 412. A rotating shaft 413 is provided at the output shaft end of the first driving block 412, and the output shaft end of the first driving block 412 is correspondingly connected to the top end of the rotating shaft 413. A first folding rod 414 is provided at the center of the rotating shaft 413, and the center of the rotating shaft 413 is fixedly connected to the bottom of the first folding rod 414. The first drive block 412 drives the rotating shaft 413 to rotate, which in turn drives the first folding rod 414 connected to the center of the rotating shaft 413 to shift downward. Simultaneously, it drives one end of the second folding rod 415 connected to the top of the first folding rod 414 to fold, so that the reset baffle 416 moves downward to form an opening for material discharge. This can precisely control the amount of molten metal flowing out of the outlet end 3, ensuring that the molten metal is stably injected into the cavity of the casting mold body 6, and avoiding excessive or insufficient flow rate from affecting the casting.

[0045] The first folding rod 414 is provided with a second folding rod 415 on both sides of the top, and one end of the second folding rod 415 is movably connected to the top of the first folding rod 414. The inner side of the other end of the two second folding rods 415 is provided with a reset baffle 416, and the inner side of the other end of the two second folding rods 415 is movably connected to the bottom protrusion of the reset baffle 416.

[0046] The reset baffle 416 has a polished surface to reduce molten metal adhesion. The edge of the reset baffle 416 fits tightly against the outlet end 3, with a high-temperature resistant graphite gasket 417 embedded at the fit point to ensure reliable sealing. Polishing the surface of the reset baffle 416 effectively reduces molten metal adhesion to its surface, lowering cleaning difficulty. Simultaneously, the tight fit between the reset baffle 416 and the outlet end 3, combined with the high-temperature resistant graphite gasket 417, ensures reliable sealing while preventing waste and molding defects caused by molten metal leakage.

[0047] The anti-deviation mechanism 42 includes two fixing plates 421. The bottom of each fixing plate 421 is connected to the inner center of the support plate 411. Each fixing plate 421 has a connecting block 422 at its top, and the top of each fixing plate 421 is movably connected to both sides of the connecting block 422. The top of the connecting block 422 is fixedly connected to the bottom of the reset baffle 416. By fixing the fixing plates 421 to the inner center of the support plate 411 and the connecting blocks 422 to the bottom of the reset baffle 416, when the reset baffle 416 moves, the end fixedly connected to the connecting block 422 remains fixed and only rotates in place, preventing the reset baffle 416 from shifting and causing flow control failure, thus ensuring the accurate and reliable flow control action of the folding mechanism 41.

[0048] A sliding wheel 423 is provided in the inner groove of the connecting block 422, and the inner groove of the connecting block 422 is movably connected to the outer side of the sliding wheel 423. An arc-shaped plate 424 is provided on the outer surface of the sliding wheel 423, and the outer surface of the sliding wheel 423 is movably connected to the arc of the arc plate 424. The bottom of the arc plate 424 is connected to the center of the support plate 411. When the connecting block 422 moves with the reset baffle 416, the sliding wheel 423 in its inner groove slides on the arc surface of the arc plate 424. This stabilizes the movement direction of the entire mechanism, prevents the self-resetting flow control and anti-overflow mechanism 4 from deviating from its original track, and improves the flexibility of the mechanism's movement, reducing the impact of movement jamming on the flow control effect.

[0049] The anti-tumor mechanical scraping structure 5 includes a second drive block 51. The bottom of the second drive block 51 is provided with a slot block 52, and the bottom of the second drive block 51 is connected to the top of the slot block 52. Two first movable rods 53 are provided at the bottom groove of the slot block 52, and the bottom groove of the slot block 52 is movably connected to one end of the two first movable rods 53. The other end of each of the two first movable rods 53 is provided with a rotatable scraping rod 54, and the other end of each of the two first movable rods 53 is movably connected to one side of the rotatable scraping rod 54.

[0050] Each of the two rotatable scraping rods 54 has two second movable rods 55 at its top, and one end of each of the two second movable rods 55 is movably connected to the other end of the four second movable rods 55, which are connected to two connecting plates 56. The other end of the four second movable rods 55 is movably connected to the grooves of the two connecting plates 56, and the inner side of the two connecting plates 56 is correspondingly connected to the outer side of the second driving block 51. The second driving block 51 drives the slot block 52 to move downward, causing the two first movable rods 53 at the groove of the slot block 52 to expand to both sides, thereby driving the rotatable scraping rods 54 to move. At the same time, the second movable rods 55 movably connected to the top of the rotatable scraping rods 54 work together to make the rotatable scraping rods 54 fit against the inner wall of the gate of different widths. With the tight fit between the scraping teeth 541 and the inner wall of the gate, the metal nodules adhering to the inner wall of the gate can be thoroughly cleaned.

[0051] The rotatable scraper 54 is made of high-strength wear-resistant alloy material. Several scraping teeth 541 are evenly arranged on the surface of the rotatable scraper 54. The size of the scraping teeth 541 is adapted to the inner diameter of the gate inner wall. The ends of the scraping teeth 541 are tightly fitted to the gate inner wall to ensure the scraping effect.

[0052] The working principle of this invention is as follows:

[0053] First, the molten metal enters the inlet gate 2 and passes through the stepped slag-avoiding structure 7 located upstream of the anti-nodulation mechanical scraping structure 5. The 3-4 layers of inclined slag-blocking platforms 71 of the stepped slag-avoiding structure 7 are evenly distributed along the gate axis and integrally formed with the inner wall of the gate. The arc-shaped guide surface 72 of each slag-blocking platform 71 uses the gravity of the molten metal to achieve the stratified sedimentation of molten slag, while guiding the molten metal to flow smoothly and avoiding the generation of eddy currents and slag entrapment, thus initially reducing the molten slag in the molten metal.

[0054] Subsequently, the molten metal flows through the anti-nodulation mechanical scraping structure 5. The second drive block 51 of the structure 5 first drives the slot block 52 to move downward. After the slot block 52 moves, it drives the two first movable rods 53 at the bottom groove to expand to both sides, thereby driving the rotatable scraping rod 54, which is movably connected to the other end of the first movable rod 53, to move synchronously. At this time, the four second movable rods 55 movably connected to the top of the rotatable scraping rod 54 work together to drive the two connecting plates 56 to adjust so that the rotatable scraping rod 54 fits the inner wall of the slot 2 of different widths.

[0055] The rotatable scraper 54 is made of high-strength wear-resistant alloy material. Several scraping teeth 541 are evenly arranged on its surface and are adapted to and closely fit the inner diameter of the gate inner wall. Then the rotatable scraper 54 starts to rotate, scraping off the metal nodules adhering to the gate inner wall in real time, avoiding gate blockage and ensuring smooth flow of molten metal.

[0056] After cleaning, the molten metal continues to flow to the outlet end 3 of the straight gate 2. At this time, the self-resetting flow control and anti-overflow mechanism 4, which is integrated into the outlet end 3 and precisely corresponds to the cavity inlet of the casting mold body 6, starts to work. The folding mechanism 41 and the anti-offset mechanism 42 of the mechanism 4 work together.

[0057] The support plate 411 of the folding mechanism 41 has its top inner side connected to the outer surface of the sprue 2. The first driving block 412, which is fixedly connected to one end of its inner bottom, first drives the rotating shaft 413 connected to its output shaft end to rotate. After the rotating shaft 413 rotates, it drives the first folding rod 414, which is fixedly connected to its center, to shift downward. This, in turn, drives one end of the two second folding rods 415, which are movably connected to the top two sides of the first folding rod 414, to fold. This causes the reset baffle 416, which is movably connected to the inner side of the other end of the two second folding rods 415, to move downward to form an opening, thereby realizing the discharge of molten metal at the outlet end 3, accurately controlling the amount of molten metal flowing out, and ensuring that the molten metal is stably injected into the cavity of the casting mold body 6.

[0058] Meanwhile, the surface of the reset baffle 416 is polished to reduce the adhesion of molten metal. Its edge fits tightly with the outlet end 3. The high-temperature resistant graphite gasket 417 embedded at the fitting point ensures the reliability of the seal and prevents molten metal leakage.

[0059] During the operation of the folding mechanism 41, the anti-deviation mechanism 42 works simultaneously. The bottom of the two fixed plates 421 of the mechanism 42 are connected to the center of the inner side of the support plate 411, and the top of the two fixed plates 421 are movably connected to the two sides of the connecting block 422. The top of the connecting block 422 is fixedly connected to the bottom of the reset baffle 416, so that when the reset baffle 416 moves, the end fixedly connected to the connecting block 422 remains fixed and only flips in place, avoiding the reset baffle 416 from shifting and causing the flow control to fail.

[0060] Simultaneously, as the connecting block 422 moves along with the reset baffle 416, the sliding wheel 423, which is movably connected to the inner groove of the connecting block 422, slides on the arc surface of the arc plate 424 connected to the center of the support plate 411. This stabilizes the movement direction of the entire mechanism, prevents the self-resetting flow control and anti-backflow mechanism 4 from deviating from its original track, and improves the flexibility of the mechanism's movement, reduces jamming, and ultimately achieves precise flow control of the molten metal, effective slag avoidance, and anti-backflow, ensuring the quality of the casting.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow-controlling and slag-avoiding single-line gating system and casting mold, comprising a single-line gating (2), an outlet end (3), a self-resetting flow-controlling and anti-overflow mechanism (4), an anti-nodule mechanical scraping structure (5), a casting mold body (6), and a stepped slag-avoiding structure (7), wherein the single-line gating (2) is precisely connected to the casting mold body (6), characterized in that: The self-resetting flow control and anti-overflow mechanism (4) is integrated into the outlet end (3) of the straight gate (2), which precisely corresponds to the cavity inlet of the casting mold body (6), and is the core component for achieving flow control and anti-overflow. Among them, the self-resetting flow control and anti-overflow mechanism (4) includes a folding mechanism (41) and an anti-deviation mechanism (42). The folding mechanism (41) achieves precise control of the flow rate of the molten metal above the outlet end (3) by folding and bending downwards. The anti-deviation mechanism (42) is used to prevent the self-resetting flow control and anti-backflow mechanism (4) from deviating from its original track during the movement, so as to ensure the accuracy and reliability of the flow control and anti-backflow actions; The anti-nodulation mechanical scraping structure (5) is located inside the straight gate (2), upstream of the self-resetting flow control and anti-overflow mechanism (4), and is adapted to the inner wall of the gate; The stepped slag-avoiding structure (7) is set inside the straight gate (2) and is located upstream of the anti-nodulation mechanical scraping structure (5). It includes 3-4 layers of inclined slag-blocking platforms (71). Each layer of slag-blocking platforms (71) is evenly distributed along the gate axis and is integrally formed with the inner wall of the gate. Each slag baffle (71) is designed as an arc-shaped flow guide surface (72), which can utilize the gravity of the molten metal to achieve the stratified sedimentation of slag.

2. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 1, characterized in that: The folding mechanism (41) includes a support plate (411), the inner top of the support plate (411) is connected to the outer surface of the inlet gate (2), an anti-offset mechanism (42) is connected to the center of the inner side of the support plate (411), a first drive block (412) is fixedly connected to one end of the bottom of the inner side of the support plate (411), a rotating shaft (413) is correspondingly connected to the output shaft end of the first drive block (412), and a first folding rod (414) is fixedly connected to the center of the rotating shaft (413).

3. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 2, characterized in that: The top two sides of the first folding rod (414) are movably connected to one end of the second folding rod (415), and the inner side of the other end of the two second folding rods (415) is movably connected to a reset baffle (416). Among them, the surface of the reset baffle (416) is polished to reduce the adhesion of molten metal. The edge of the reset baffle (416) is tightly fitted with the outlet end (3), and a high-temperature resistant gasket (417) made of graphite is embedded at the fitting point to ensure the reliability of the seal.

4. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 2, characterized in that: The anti-deviation mechanism (42) includes two fixed plates (421). The bottom of both fixed plates (421) is connected to the center of the inner side of the support plate (411). The top of both fixed plates (421) is movably connected to a connecting block (422), and the top of the connecting block (422) is fixedly connected to the bottom of the reset baffle (416).

5. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 4, characterized in that: A sliding wheel (423) is movably connected to the inner groove of the connecting block (422), and an arc plate (424) is movably connected to the outer surface of the sliding wheel (423), with the bottom of the arc plate (424) connected to the center of the support plate (411).

6. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 1, characterized in that: The anti-tumor mechanical scraping structure (5) includes a second drive block (51), the bottom of the second drive block (51) is connected to a slot block (52), and the bottom groove of the slot block (52) is movably connected to one end of two first movable rods (53), and the other end of the two first movable rods (53) is movably connected to a rotatable scraping rod (54).

7. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 6, characterized in that: The top of each of the two rotatable scraping rods (54) is movably connected to one end of two second movable rods (55), and the other end of the four second movable rods (55) is movably connected to two connecting plates (56), and the inner side of the two connecting plates (56) is correspondingly connected to the outer side of the second drive block (51).

8. The flow-controlling and slag-avoiding one-line gating riser system and casting mold according to claim 7, characterized in that: The rotatable scraper (54) is made of high-strength wear-resistant alloy material. Several scraping teeth (541) are evenly arranged on the surface of the rotatable scraper (54). The size of the scraping teeth (541) is adapted to the inner diameter of the gate inner wall. The ends of the scraping teeth (541) are tightly fitted to the gate inner wall to ensure the scraping effect.

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