Cathode carbon block phosphorus pig iron casting furnace and casting method

Abstract

The present invention discloses a cathode carbon block phosphorus pig iron casting furnace, which belongs to the technical field of casting furnaces. The furnace body includes a support plate and a furnace body connected thereto by a shaft. The furnace body is provided with a casting port for casting operations, and a feed port is seamlessly welded at the upper opening of the furnace body. The feed port is connected to a hemispherical frame through a gravity-type turning mechanism, and a transfer box for transferring molten iron is placed in the hemispherical frame. The hemispherical frame is provided with two axial protrusions symmetrical about its axis. The invention can use the gravity of the transfer box to drive the hemispherical frame to move downward and rotate, thereby preventing the poured molten iron from splashing out and causing safety accidents. The transfer box and the hemispherical frame can be connected by a locking mechanism to prevent the two from sliding off the hemispherical frame due to the gravity of the transfer box after rotating to a certain angle. In addition, the damping and buffering structure can be used to improve the stability of the transfer box during the turning process, further reducing the possibility of molten iron splashing out.

Description

Technical Field

[0001] The invention relates to the technical field of casting furnaces, in particular to a cathode carbon block phosphorus pig iron casting furnace and a casting method. Background Art

[0002] In the production of aluminum electrolytic cells, the effective connection between cathode carbon blocks and cathode steel bars is crucial, and the cathode carbon block phosphorus pig iron casting furnace plays a core role in this process;

[0003] At present, there are three main methods for assembling cathode carbon blocks: carbon paste ramming assembly method, phosphorus pig iron casting method, and bonding method. Among them, the carbon paste ramming assembly method uses carbon paste to fill the gaps on both sides of the steel rod, and then uses pneumatic tools to ram and compact it; the phosphorus pig iron casting method is to cast molten phosphorus pig iron into the gaps, and after condensation, the two are combined into one; the bonding method is to use adhesives or carbon glue to bond the cathode carbon block and the steel rod together;

[0004] There are still some technical problems in the use of the cathode carbon block phosphorus pig iron casting furnace, specifically as follows: the opening of the cathode carbon block phosphorus pig iron casting furnace is relatively large. When the molten iron tank for transferring molten iron is lifted to the opening and the molten iron is poured out, the molten iron is easily splashed out, which can easily lead to safety accidents. In order to prevent the molten iron from splashing, there is a method in the prior art of using a baffle to block the opening of the casting furnace. For example, the publication number CN219335960U discloses a molten iron casting furnace, which uses an arc-shaped baffle to cover the opening of the casting furnace. Although this method can prevent the molten iron from splashing, it needs to be driven by a motor and a cylinder, which increases the manufacturing cost.

[0005] In addition, when pouring molten iron, the amplitude is large and not stable enough. Although the molten iron will not splash out of the casting furnace, it is easy to splash onto the motor or cylinder inside the casting furnace, which may cause the stable operation of the motor or cylinder to fail.

[0006] Therefore, a cathode carbon block phosphorus pig iron casting furnace is needed to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a cathode carbon block phosphorus pig iron casting furnace and casting method to solve the problem in the above background technology that the existing cathode carbon block phosphorus pig iron casting furnace has high cost for blocking molten iron splashing and is not conducive to reducing the amplitude of pouring molten iron.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A cathode carbon block phosphorus pig iron casting furnace includes a support plate and a furnace body connected thereto with an axis, the furnace body is provided with a casting port for casting operations, and a feed port is seamlessly welded at the upper end opening of the furnace body, the feed port is connected to a hemispherical frame through a gravity-type flipping mechanism, and a transfer box for transferring molten iron is placed in the hemispherical frame, the hemispherical frame is provided with two axial protrusions symmetrical about its axis center, the hemispherical frame is connected to a snap mechanism for limiting the transfer box, and the snap mechanism includes an embedded groove provided on the transfer box.

[0010] Preferably, the diameter of the hemispherical frame matches the inner diameter of the feed port, and the arc-shaped lower end of the hemispherical frame is a hollow structure. A square groove is provided at the upper end of the hemispherical frame, and the width of the square groove matches the width of the transfer box, and the length of the square groove is greater than the length of the transfer box.

[0011] Preferably, a rope groove is provided on the hemispherical frame, and a Y-shaped rope is connected to the transfer box. The upper end diameter of the Y-shaped rope matches the diameter of the rope groove, so that the upper end of the Y-shaped rope can be embedded in the interior of the rope groove to avoid the rope affecting the flipping of the hemispherical frame.

[0012] Preferably, the gravity-type turning mechanism also includes two strip grooves running through the inner and outer sides of the feed port, and the two shaft protrusions extend into the corresponding strip grooves respectively. The outer side of each shaft protrusion is key-connected with a follower gear, and teeth are evenly spaced on one side of each strip groove, and the follower gear is meshed with the teeth in the corresponding strip groove.

[0013] Preferably, each of the follower gears is provided with a penetrating rod which movably penetrates into the square groove in the hemispherical frame, and the penetrating rod extends out of the end bearing of the corresponding follower gear to connect to the limiting block, each of the limiting blocks is slidably connected to the corresponding limiting groove, and the limiting groove is provided on the inner side of the mounting frame, and the mounting frame is fixedly installed on the outer side of the feed port, and the two mounting frames are symmetrical about the axis center of the feed port.

[0014] Preferably, the outer bearing of one end of the through rod extending out of the corresponding follower gear is connected to the lower end of the piston rod, a slide groove is provided on the inner side of the upper end of the mounting frame, and a slider is slidably connected in the slide groove, each of the mounting frames is provided with a piston tube, and a slider is provided at the upper end of each piston tube, the upper end of the piston rod is seamlessly slidably connected to the inside of the piston tube, and the middle part of the piston rod is sealed and movably passes through the lower end of the piston tube, and the upper end of the piston rod is provided with a damping hole.

[0015] Preferably, a circular disc coaxial with the piston rod is fixedly provided at the lower end of the piston rod, and the upper surface of the disc coincides with the projection of the lower end of the piston tube. A spring movably nested in the outer side of the middle part of the corresponding piston rod is provided between the upper surface of the disc and the lower end of the piston tube, and the piston tube is filled with hydraulic oil.

[0016] Preferably, the locking mechanism further includes an embedding strip connected to one end of the through rod extending into the square groove on the hemispherical frame, the embedding strip is arranged in a one-to-one correspondence with the embedded groove, and the minimum longitudinal thickness of the embedding strip matches the inner width of the embedded groove.

[0017] Preferably, the limit block and the limit groove are both wedge-shaped, so that the limit block can gradually squeeze the through rod when it moves downward relative to the limit groove. The through rod is prismatic, and a prismatic through hole is provided on the follower gear. The prismatic through hole facilitates the prismatic through rod to penetrate the follower gear. The longitudinal cross-sectional dimensions of the prismatic through hole and the prismatic through rod are consistent, and are used to limit the through rod so that it rotates synchronously with the follower gear.

[0018] A casting method for a casting furnace, the method comprising:

[0019] Step 1: Use the Y-shaped rope to lift the transfer box into the square slot on the hemispherical frame. During this process, the transfer box blocks the hollow structure on the hemispherical frame.

[0020] Step 2: Gradually release the Y-shaped rope, so that the gravity of the transfer box gradually acts on the hemispherical frame. The hemispherical frame is gradually moved downward by the gravity of the transfer box.

[0021] Step 3: As the hemispherical frame moves downward, the stopper, the stopper slot, and the through-rod limit the shaft protrusion to move downward vertically relative to the teeth in the strip groove. At this time, the follower gear rotates due to meshing with the teeth.

[0022] When the follower gear rotates, the hemispherical frame is driven to rotate synchronously through the shaft cam, and then the transfer box is gradually turned over. During the turning process, the transfer box gradually dumps the molten iron. During the rotation process, the hemispherical frame can reduce the degree of connectivity between the furnace body and the outside through the feeding port, thereby avoiding molten iron splashing and causing safety accidents.

[0023] Step 4: During step 3, the limiting block moves vertically downward relative to the limiting slot, so that the through rod drives the embedding strip to gradually approach the embedding slot, thereby locking the transfer box to prevent the transfer box from separating from the hemispherical frame during the flipping process;

[0024] And when the hemispherical frame and the transfer box are turned over synchronously, the rope groove can be stuck in the Y-shaped rope connected to the transfer box to prevent the rope from hindering the rotation of the hemispherical frame;

[0025] In addition, as the hemispherical frame moves downward and rotates at the same time, the piston rod is driven to move downward synchronously through the through rod, and the piston rod, piston tube and damping hole constitute a damping buffer structure, which can further delay the downward movement of the hemispherical frame and ensure the stability of the transfer box downward, thereby facilitating the smooth flipping of the transfer box, thereby further reducing the possibility of molten iron splashing and ensuring the safety of the staff.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the cathode carbon block phosphorus pig iron casting furnace can drive the hemispherical frame to move downward and rotate by the gravity of the transfer box, thereby preventing the poured molten iron from splashing out and causing safety accidents; the transfer box and the hemispherical frame can be connected by a snap mechanism to prevent the transfer box from sliding off the hemispherical frame due to the gravity of the transfer box after the two are rotated to a certain angle; in addition, the damping buffer structure can improve the stability of the transfer box during the flipping process, further reducing the possibility of molten iron splashing out:

[0027] 1. After the transfer box containing molten iron is placed into the square slot on the hemispherical frame, the gravity of the transfer box will cause the hemispherical frame to move downward. During the downward movement of the hemispherical frame, the engagement of the follower gear and the teeth will cause the hemispherical frame to rotate. When the hemispherical frame rotates, it will block the feed port, thereby preventing the molten iron from splashing out and helping to avoid safety accidents.

[0028] 2. During the flipping process of the hemispherical frame, the wedge-shaped limit block slides on the wedge-shaped limit groove, which allows the through-rod to move into the square groove in the hemispherical frame, thereby driving the embedded strip to snap into the embedded groove. This prevents the transfer box from sliding off the hemispherical frame under the action of its gravity after the hemispherical frame and the transfer box are flipped 90°.

[0029] 3. During the flipping process of the hemispherical frame, the damping buffer structure composed of the piston tube, piston rod, damping hole and hydraulic oil can slow down the speed of the hemispherical frame moving downward, thereby improving the stability of the hemispherical frame driving the transfer box to flip, ensuring the smooth pouring of molten iron, avoiding the problem of high splashing height of molten iron caused by large-scale dumping, and helping to further reduce the possibility of molten iron splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 It is a schematic cross-sectional view of the present invention;

[0032] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of point A;

[0033] Figure 4 It is a partial cross-sectional structural schematic diagram of the present invention;

[0034] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of point B;

[0035] Figure 6 This is a schematic diagram of the connection structure between the hemispherical frame and the follower gear of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection structure between the limit block and the transfer box of the present invention;

[0037] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of point C in the middle.

[0038] In the figure: 1. Support plate; 2. Furnace body; 3. Casting port; 4. Feed port; 5. Hemispherical frame; 6. Transfer box; 7. Mounting frame; 8. Shaft boss; 9. Follower gear; 10. Through rod; 11. Limit block; 12. Limit groove; 13. Piston rod; 14. Piston tube; 15. Damping hole; 16. Spring; 17. Slider; 18. Slide groove; 19. Strip groove; 20. Teeth; 21. Rope groove; 22. Embedded strip; 23. Embedded groove. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-8 , the present invention provides the following technical solutions:

[0041] Embodiment 1: In order to solve the problem that molten iron is easily splashed when being poured into the cathode carbon block phosphorus pig iron casting furnace, which leads to safety accidents, the following technical solution is provided, specifically, a cathode carbon block phosphorus pig iron casting furnace, comprising a support plate 1 and a furnace body 2 connected thereto by an axis, the furnace body 2 is provided with a casting port 3 for casting operations, and a feed port 4 is seamlessly welded at the upper end opening of the furnace body 2, the feed port 4 is connected to the hemispherical frame 5 by a gravity-type turning mechanism, and a transfer box 6 for transferring molten iron is placed in the hemispherical frame 5, and the hemispherical frame 5 is provided with two axial protrusions 8 that are symmetrical about the center of its axis.

[0042] The diameter of the hemispherical frame 5 is consistent with the inner diameter of the feed port 4, and the arc-shaped lower end of the hemispherical frame 5 is a hollow structure. The upper end of the hemispherical frame 5 is provided with a square groove, and the width of the square groove is consistent with the width of the transfer box 6. The length of the square groove is greater than the length of the transfer box 6. A rope groove 21 is provided on the hemispherical frame 5, and a Y-shaped rope is connected to the transfer box 6. The upper end diameter of the Y-shaped rope is consistent with the diameter of the rope groove 21, which facilitates the upper end of the Y-shaped rope to be embedded in the interior of the rope groove 21, thereby preventing the rope from affecting the flipping of the hemispherical frame 5.

[0043] The gravity-type turning mechanism also includes two strip grooves 19 running through the inner and outer sides of the feed port 4, and the two shaft protrusions 8 extend into the corresponding strip grooves 19 respectively. The outer side of each shaft protrusion 8 is key-connected with a follower gear 9. Teeth 20 are evenly spaced on one side of each strip groove 19, and the follower gear 9 is meshed with the teeth 20 in the corresponding strip groove 19. Each follower gear 9 is provided with a through rod 10 that is movable and penetrates the square groove in the hemispherical frame 5, and the through rod 10 extends out of the end bearing of the corresponding follower gear 9 to connect the limited block 11. Each limiting block 11 is slidably connected to the corresponding limiting groove 12, and the limiting groove 12 is arranged on the inner side of the mounting frame 7, the mounting frame 7 is fixedly mounted on the outer side of the feed port 4, and the two mounting frames 7 are symmetrical about the axis center of the feed port 4, the through rod 10 extends out of the corresponding follower gear 9, and the outer bearing is connected to the lower end of the piston rod 13, the upper end of the mounting frame 7 is provided with a slide groove 18, and the slide groove 18 is slidably connected with a slider 17, each mounting frame 7 is provided with a piston tube 14, and the slider 17 is provided at the upper end of each piston tube 14. The upper end of the piston rod 13 is seamlessly slidably connected to the inside of the piston tube 14, and the middle part of the piston rod 13 is sealed and moves through the lower end of the piston tube 14. The upper end of the piston rod 13 is provided with a damping hole 15. When in use, the transfer box 6 is hoisted into the square groove on the hemispherical frame 5, and then the Y-shaped rope is slowly released, so that the gravity of the transfer box 6 is gradually transferred to the hemispherical frame 5. During this process, the hemispherical frame 5 will move downward due to gravity. During the downward movement, the limit block 11 connected to the bearing of the penetrating rod 10 will slide on the limit groove 12. As the diameter of the hemispherical frame 5 matches the inner diameter of the feed port 4, it is ensured that the cam 8 provided on the hemispherical frame 5 can move vertically downward relative to the strip groove 19, thereby causing the follower gear 9 to rotate under the action of the teeth 20, and finally causing the follower gear 9 to drive the hemispherical frame 5 to rotate through the cam 8, thereby achieving the purpose of the hemispherical frame 5 rotating while moving downward. When the hemispherical frame 5 rotates, the connectivity between the furnace body 2 and the outside through the feed port 4 can be greatly reduced, thereby greatly reducing the possibility of molten iron splashing to the outside, thereby preventing the occurrence of safety accidents.

[0044] A circular disc coaxial with the piston rod 13 is fixedly provided at the lower end of the piston rod 13, and the upper surface of the disc coincides with the projection of the lower end of the piston tube 14. A spring 16 movably nested in the outer side of the middle part of the corresponding piston rod 13 is provided between the upper surface of the disc and the lower end of the piston tube 14. The piston tube 14 is filled with hydraulic oil. When in use, the damping buffer structure composed of the piston rod 13, piston tube 14, hydraulic oil and damping hole 15 can improve the stability of the downward movement of the transfer box 6 and the hemispherical frame 5, thereby further reducing the possibility of molten iron splashing.

[0045] Example 2: In order to solve the problem that in the past, when the cathode carbon block phosphorus pig iron casting furnace used a baffle to prevent the molten iron from splashing, additional equipment was needed to clamp and fix the molten iron tank, the following technical solution is provided. Specifically, a locking mechanism for limiting the transfer box 6 is connected to the hemispherical frame 5, and the locking mechanism includes an embedded groove 23 provided on the transfer box 6.

[0046] The locking mechanism also includes an embedding strip 22 connected to the through-rod 10 and extending into one end of the square groove on the hemispherical frame 5. The embedding strip 22 is arranged in a one-to-one correspondence with the embedded groove 23. The minimum longitudinal thickness of the embedding strip 22 coincides with the inner width of the embedded groove 23. The limit block 11 and the limit groove 12 are both wedge-shaped, so that the limit block 11 gradually squeezes the through-rod 10 when it moves downward relative to the limit groove 12. The through-rod 10 is prismatic, and a prismatic through hole is provided on the follower gear 9. The prismatic through hole facilitates the prismatic through-rod 10 to penetrate the follower gear 9. The longitudinal cross-sectional dimensions of the prismatic through hole and the prismatic through-rod 10 coincide, and are used to limit the through-rod 10 so that it follows the follower gear 9. Synchronous rotation. When in use, since the transfer box 6 and the hemispherical frame 5 rotate while moving downward, the embedded strip 22 can be driven to rotate synchronously through the prismatic through hole and the prismatic through rod 10, and the wedge-shaped limit block 11 and the wedge-shaped limit groove 12 can be used to realize that the through rod 10 drives the embedded strip 22 to engage with the embedded groove 23 before the transfer box 6 and the hemispherical frame 5 move relative to each other, thereby preventing the transfer box 6 from sliding out of the hemispherical frame 5 under the action of gravity after the transfer box 6 and the hemispherical frame 5 are flipped over a certain angle. In the above process, there is no need to use other equipment (such as a cylinder-driven clamping structure) to fix the transfer box 6, thereby reducing costs, and the structure is simple and maintenance is convenient.

[0047] A casting method for a casting furnace, the method comprising:

[0048] Step 1: Use a Y-shaped rope to lift the transfer box 6 into the square slot on the hemispherical frame 5. During this process, the transfer box 6 blocks the hollow structure on the hemispherical frame 5;

[0049] Step 2: Gradually release the Y-shaped rope, so that the gravity of the transfer box 6 gradually acts on the hemispherical frame 5. The hemispherical frame 5 is gradually moved downward by the gravity of the transfer box 6;

[0050] Step 3: As the hemispherical frame 5 moves downward, the stopper 11, the stopper groove 12, and the through rod 10 limit the shaft protrusion 8 to move downward vertically relative to the teeth 20 in the strip groove 19. At this time, the follower gear 9 rotates due to the meshing with the teeth 20.

[0051] When the follower gear 9 rotates, the hemispherical frame 5 is driven to rotate synchronously through the shaft protrusion 8, thereby gradually turning over the transfer box 6. During the turning process, the transfer box 6 gradually dumps the molten iron. During the rotation process, the hemispherical frame 5 can reduce the degree of connectivity between the furnace body 2 and the outside through the feed port 4, thereby preventing the molten iron from splashing and causing safety accidents.

[0052] Step 4: During step 3, the limiting block 11 moves vertically downward relative to the limiting groove 12, so that the through rod 10 drives the embedding strip 22 to gradually approach the embedding groove 23, thereby clamping the transfer box 6 to prevent the transfer box 6 from separating from the hemispherical frame 5 during the flipping process;

[0053] And during the synchronous flipping process of the hemispherical frame 5 and the transfer box 6, the rope groove 21 can be clamped into the Y-shaped rope connecting the transfer box 6 to prevent the rope from hindering the rotation of the hemispherical frame 5;

[0054] In addition, as the hemispherical frame 5 moves downward and rotates, the piston rod 13 is driven to move downward synchronously through the through rod 10, and the piston rod 13, piston tube 14 and damping hole 15 constitute a damping buffer structure, which can further delay the downward movement of the hemispherical frame 5, ensure the stability of the downward movement of the transfer box 6, and then facilitate the smooth flipping of the transfer box 6, thereby further reducing the possibility of molten iron splashing and ensuring the safety of the staff.

[0055] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cathode carbon block phosphorus pig iron casting furnace, comprising a support plate (1) and a furnace body (2) connected to the support plate, characterized in that: The furnace body (2) is provided with a pouring port (3) for a casting operation, and a feed port (4) is seamlessly welded at the upper opening of the furnace body (2), the feed port (4) is connected to the hemispherical frame (5) through a gravity-type turning mechanism, and a transfer box (6) for transferring molten iron is placed in the hemispherical frame (5), the diameter of the hemispherical frame (5) is consistent with the inner diameter of the feed port (4), and the arc-shaped lower end of the hemispherical frame (5) is a hollow structure, and the upper end of the hemispherical frame (5) is provided with a square groove, and the width of the square groove is the same as that of the transfer box ( 6) The width is consistent, the length of the square groove is greater than the length of the transfer box (6), the hemispherical frame (5) is provided with a rope groove (21), the transfer box (6) is connected with a Y-shaped rope, the upper end diameter of the Y-shaped rope is consistent with the diameter of the rope groove (21), so that the upper end of the Y-shaped rope is embedded in the rope groove (21) to prevent the rope from affecting the flipping of the hemispherical frame (5), the hemispherical frame (5) is provided with two axial protrusions (8) symmetrical about the axis center thereof, and the hemispherical frame (5) is connected with a Y-shaped rope for the transfer box (6) The locking mechanism includes an embedded groove (23) provided on the transfer box (6), and the gravity-type turning mechanism also includes two strip grooves (19) running through the inside and outside of the feed port (4), and the two shaft protrusions (8) extend into the corresponding strip grooves (19), and the outer side of each shaft protrusion (8) is key-connected with a follower gear (9), and teeth (20) are evenly distributed on one side of each strip groove (19), and the follower gear (9) meshes with the teeth (20) in the corresponding strip groove (19). The driven gear (9) is connected with each other, and each driven gear (9) is provided with a through rod (10) that is movable and penetrates the square groove in the hemispherical frame (5), and the through rod (10) extends out of the end bearing of the corresponding driven gear (9) to connect the limiting block (11), and each limiting block (11) is slidably connected to the corresponding limiting groove (12), and the limiting groove (12) is provided on the inner side of the mounting frame (7), and the mounting frame (7) is fixedly installed on the outer side of the feed port (4), and the two mounting frames (7) are symmetrical about the axis center of the feed port (4).

2. The cathode carbon block phosphorus pig iron casting furnace according to claim 1, characterized in that: The through rod (10) extends out of the corresponding follower gear (9), and the outer side bearing is connected to the lower end of the piston rod (13). The inner side of the upper end of the mounting frame (7) is provided with a slide groove (18), and the slide groove (18) is slidably connected with a slider (17). Each mounting frame (7) is provided with a piston tube (14), and the slider (17) is provided at the upper end of each piston tube (14). The upper end of the piston rod (13) is seamlessly slidably connected to the inside of the piston tube (14), and the middle part of the piston rod (13) is sealed and moves through the lower end of the piston tube (14). The upper end of the piston rod (13) is provided with a damping hole (15).

3. The cathode carbon block phosphorus pig iron casting furnace according to claim 2, characterized in that: A circular disc coaxial with the piston rod (13) is fixedly provided at the lower end thereof, and the upper surface of the disc coincides with the projection of the lower end of the piston tube (14). A spring (16) movably nested on the outer side of the middle portion of the corresponding piston rod (13) is provided between the upper surface of the disc and the lower end of the piston tube (14). The piston tube (14) is filled with hydraulic oil.

4. The cathode carbon block phosphorus pig iron casting furnace according to claim 3, characterized in that: The locking mechanism further comprises an embedding strip (22) connected to one end of the through rod (10) and extending into the square groove on the hemispherical frame (5), wherein the embedding strip (22) is arranged in a one-to-one correspondence with the embedded groove (23), and the minimum longitudinal thickness of the embedding strip (22) matches the inner width of the embedded groove (23).

5. The cathode carbon block phosphorus pig iron casting furnace according to claim 4, characterized in that: The limiting block (11) and the limiting groove (12) are both wedge-shaped, so that the limiting block (11) gradually squeezes the through rod (10) when it moves downward relative to the limiting groove (12). The through rod (10) is prismatic, and a prismatic through hole is provided on the follower gear (9). The prismatic through hole facilitates the prismatic through rod (10) to penetrate the follower gear (9). The longitudinal cross-sectional dimensions of the prismatic through hole and the prismatic through rod (10) are consistent, and are used to limit the through rod (10) so that it rotates synchronously with the follower gear (9).

6. A casting method for a casting furnace according to claim 5, characterized in that: The method comprises: Step 1: Using a Y-shaped rope, the transfer box (6) is hoisted into the square groove on the hemispherical frame (5). During this process, the transfer box (6) blocks the hollow structure on the hemispherical frame (5); Step 2: gradually releasing the Y-shaped rope, so that the gravity of the transfer box (6) gradually acts on the hemispherical frame (5), and the hemispherical frame (5) is gradually moved downward by the gravity of the transfer box (6); Step 3: During the downward movement of the hemispherical frame (5), the limiting block (11), the limiting groove (12) and the through rod (10) are used to limit the shaft protrusion (8) relative to the inner teeth (20) of the strip groove (19). At this time, the follower gear (9) rotates due to the engagement with the teeth (20); When the follower gear (9) rotates, the hemispherical frame (5) is driven to rotate synchronously through the shaft protrusion (8), thereby gradually turning over the transfer box (6). During the turning process, the transfer box (6) gradually dumps the molten iron, and during the rotation process, the hemispherical frame (5) can reduce the degree of connection between the furnace body (2) and the outside through the feed port (4), thereby preventing the molten iron from splashing and causing safety accidents. Step 4: During step 3, the limiting block (11) moves vertically downward relative to the limiting groove (12), so that the through rod (10) drives the embedding strip (22) to gradually approach the embedded groove (23), thereby clamping the transfer box (6) to prevent the transfer box (6) from being separated from the hemispherical frame (5) during the flipping process; Furthermore, during the synchronous flipping process of the hemispherical frame (5) and the transfer box (6), the rope groove (21) can be engaged with the Y-shaped rope connected to the transfer box (6), thereby preventing the rope from hindering the rotation of the hemispherical frame (5); In addition, when the hemispherical frame (5) moves downward and rotates at the same time, the piston rod (13) is driven to move downward synchronously by the through rod (10), and the piston rod (13), the piston tube (14) and the damping hole (15) constitute a damping buffer structure, which can further delay the speed of the hemispherical frame (5) moving downward, ensure the stability of the transfer box (6) moving downward, and then facilitate the smooth flipping of the transfer box (6), thereby further reducing the possibility of molten iron splashing and ensuring the safety of the staff.

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