Molten iron pouring device for cast steel volute casting

Abstract

The invention discloses a molten iron pouring device for cast steel volute casting, and belongs to the technical field of cast steel volute casting, the molten iron pouring device comprises a supporting frame and a pouring barrel, two supporting legs are fixedly mounted on the lower surface of the supporting frame, a protective cover is fixedly mounted on the side wall of the supporting frame, and a stabilizing assembly is arranged on the inner wall of the supporting frame; according to the device, the stabilizing assembly is arranged, one moving column can move under the action of a thread, the other moving column synchronously moves under the limiting of a limiting rod, and therefore the supporting column is driven to move towards the outer side of the supporting frame; in the volute casting process, the contact area between the molten iron casting device and the ground is continuously increased along with the inclination of the casting barrel, and the gravity center of the device is changed by changing the contact area, so that the stability of the molten iron casting device in the casting process is improved, and the situation that the device topples over due to the change of the gravity center and molten iron flows out is avoided; and the safety of the molten iron pouring device during use is further ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of cast steel volute casting, and in particular relates to a molten iron pouring device for casting a cast steel volute casting. Background Art

[0002] The molten iron pouring device is a device used to inject molten iron into a mold. It is mainly used in the casting process. The design and function of the molten iron pouring device are diverse, aiming to improve casting efficiency and safety. The volute is a key component for fluid suction, compression and discharge that rotates on the outer edge of the pump shaft. The design and manufacturing technology of the volute has an important influence on the performance and service life of the pump. Most of the volute castings are made by pouring molten iron into the mold.

[0003] A Chinese patent discloses a casting device for lost foam casting (CN116900246A). The present invention provides a casting device for lost foam casting that can avoid the occurrence of sand sticking during the casting process. A casting device for lost foam casting includes a support frame, a moving part, a first screw, etc. The left and right parts of the support frame are both rotatably connected to the first screw, and the first screw is threadedly connected to the moving part, and the moving part is slidably connected to the upper part of the support frame. It also includes a pressure mechanism and a filtering mechanism. The casting bucket is provided with a pressure mechanism, and the pressure mechanism is provided with a filtering mechanism. The present invention can press the molten iron in the casting bucket downward by moving the lower pressure plate downward to avoid the phenomenon of interruption when the molten iron flows downward, and the filter can be used to filter the impurities in the molten iron to prevent the occurrence of sand sticking during the casting process and avoid the defect of slag inclusion in the casting, thereby improving the casting effect. During the pouring process, the center of gravity of the current molten iron pouring device will constantly change as the tilt angle of the pouring bucket changes and the molten iron inside continues to decrease. Therefore, the overall stability of the device will be erratic. If it topples over during the pouring process, it will be dangerous and will also cause waste of materials. Therefore, a molten iron pouring device for casting a cast steel volute is provided. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the center of gravity of the current molten iron pouring device changes during the pouring process, thereby causing the stability of the molten iron pouring device to change continuously, and to propose a molten iron pouring device for casting a cast steel volute.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a molten iron pouring device for casting a cast steel volute, comprising a support frame and a pouring bucket, wherein two support legs are fixedly installed on the lower surface of the support frame, a protective cover is fixedly installed on the side wall of the support frame, a driving motor is fixedly installed on the inner wall of the protective cover, a limiting sleeve is fixedly installed on the inner surface of the support frame, a positioning block is fixedly installed on the outer surface of the pouring bucket, the positioning block and the limiting sleeve are adapted to each other, a stabilizing component is arranged on the inner wall of the support frame, and a reinforcing component and a cooling component are arranged on the upper surface of the support frame; The stabilizing assembly includes a supporting column and a rotating rod, and two movable columns are fixedly installed on the side wall of the supporting column, and a threaded rod is threadedly installed on the inner wall of one of the movable columns, one end of the threaded rod extends to the outside of the side wall of the movable column, and a positioning rod is fixedly installed on one end of the threaded rod, and a driven bevel gear is fixedly installed on the outer surface of the positioning rod.

[0006] As a further description of the above technical solution: A limiting rod is slidably installed on the inner wall of the other movable column, a groove is provided on the lower surface of the two supporting legs, a positioning hole is provided on the inner wall of the groove, one end of the positioning rod is rotatably connected to the inner wall of the positioning hole on the supporting leg, and one end of the limiting rod is fixedly connected to the inner wall of the positioning hole on the other supporting leg.

[0007] As a further description of the above technical solution: A driving bevel gear is fixedly mounted on the outer surface of the rotating rod, and the driving bevel gear is meshedly connected with the driven bevel gear. A cavity is provided inside the support frame, and one end of the rotating rod is rotatably connected to the inner wall of the top surface of the cavity. A worm gear is fixedly mounted on the outer surface of the rotating rod.

[0008] As a further description of the above technical solution: The worm wheel is located in the cavity, and a worm is rotatably mounted on the inner wall of the cavity. The worm is meshingly connected to the worm wheel, one end of the worm extends to the inside of the limit sleeve, one end of the worm is fixedly connected to the side wall of the positioning block, the other end of the worm extends to the inside of the protective cover, and the other end of the worm is fixedly connected to the output end of the drive motor.

[0009] As a further description of the above technical solution: The reinforcement assembly includes a positioning plate and a mounting plate, the lower surfaces of the positioning plate and the mounting plate are fixedly connected to the upper surface of the support frame, a driving rod is rotatably mounted on the inner wall of the positioning plate, and a sprocket is fixedly mounted on the outer surface of the driving rod and the worm, and the sprockets are connected by a sprocket transmission.

[0010] As a further description of the above technical solution: One end of the driving rod extends to the outside of the side wall of the mounting plate, a winding roller is fixedly mounted on the outer surface of the driving rod, a pull rope is wound around the outer surface of the winding roller, and a fixing column is fixedly mounted on the outer surface of the supporting frame.

[0011] As a further description of the above technical solution: A notch is provided at one end of the fixed column, a pulley is rotatably installed on the inner wall of the notch through a rotating shaft, a lifting ring is fixedly installed on the outer surface of the casting bucket, and the lifting ring is fixedly connected to one end of the pull rope through the pulley.

[0012] As a further description of the above technical solution: The cooling component includes a fixed cylinder and a rotating disk. A connecting pipe is installed on the side wall of the fixed cylinder. A water outlet pipe is installed on one end of the connecting pipe. A water outlet hole is provided on the lower surface of the water outlet pipe. A fixing plate is fixedly installed on one end of the water outlet pipe. The lower surface of the fixing plate is fixedly connected to the upper surface of the mounting plate.

[0013] As a further description of the above technical solution: A water inlet pipe is connected and installed on the other side wall of the fixed cylinder, and a one-way valve is fixedly installed on the inner wall of the water inlet pipe and the connecting pipe, a partition is fixedly installed on the inner wall of the fixed cylinder, a piston plate is slidably installed on the inner wall of the fixed cylinder, a fixed rod is fixedly installed on the side wall of the piston plate, one end of the fixed rod extends to the outside of the side wall of the partition and a movable plate is fixedly installed, a movable rod is rotatably installed on the side wall of the movable plate, a travel groove is provided on the side wall of the fixed cylinder, and one end of the movable rod extends to the outside of the side wall of the fixed cylinder through the travel groove.

[0014] As a further description of the above technical solution: The side wall of the rotating disk is fixedly connected to one end of the driving rod, a connecting rod is rotatably installed on the side wall of the rotating disk near the edge, a movable plate is fixedly installed on one end of the connecting rod, and the side wall of the movable plate is fixedly connected to one end of the movable rod.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, a stabilizing component is provided, and a driving motor in the protective cover drives the worm to rotate, and the worm drives the casting bucket to rotate under the limit of the limit sleeve through the positioning block, and then the molten iron in the casting bucket is poured into the mold of the volute. During the rotation of the casting bucket, the worm drives the rotating rod to rotate through the worm gear, and the rotating rod drives the driving bevel gear to rotate synchronously. Under the action of the driven bevel gear, the positioning rod is driven to rotate in the positioning hole, thereby driving the threaded rod to rotate synchronously. Under the action of the thread, the moving column moves, and the other moving column moves synchronously under the limit of the limit rod, thereby driving the supporting column to move to the outside of the supporting frame. During the casting of the volute, the contact area between the molten iron casting device and the ground is continuously increased with the inclination of the casting bucket, and the center of gravity of the device is changed by changing the contact area, thereby improving the stability of the molten iron casting device during the casting process, avoiding the device from tipping over due to the change of the center of gravity, resulting in the outflow of molten iron, and further ensuring the safety of the molten iron casting device when in use.

[0016] 2. In the present invention, by providing a reinforcement component, the worm will drive the driving rod to rotate on the inner wall of the positioning plate under the action of the sprocket wheel and the toothed chain while rotating. At this time, the driving rod will drive the winding roller and the rotating disk to rotate synchronously. The winding roller will contract the pull rope when rotating. At this time, the pull rope will pull the lifting ring through the pulley, thereby exerting a certain pulling force on the bottom of the casting bucket. On the basis of motor drive, a pulling force is provided to reduce the reaction force generated by the casting bucket on the motor during the tilting process. On the one hand, it protects the motor, and on the other hand, it accelerates the tilting speed of the casting bucket and improves the casting efficiency of the molten iron casting device.

[0017] 3. In the present invention, a cooling component is provided, and the rotating disk will drive the connecting rod to move when it rotates. At this time, the movable rod is driven to move back and forth in the stroke groove under the action of the movable plate, and the movable rod will drive the movable plate to move back and forth in the fixed cylinder. At this time, the movable plate drives the piston plate to move back and forth through the fixed rod, thereby absorbing water into the fixed cylinder through the water inlet pipe, and then transporting the water to the water outlet pipe through the connecting pipe, and dripping onto the outer surface of the winding roller through the water outlet hole, cooling the pull rope wrapped on the outer surface of the winding roller, thereby realizing cooling treatment of the pull rope when the reinforcement component is working, reducing the loss of the pull rope caused by high temperature, increasing the service life of the pull rope, and ensuring the working stability of the molten iron casting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a three-dimensional structural schematic diagram of a molten iron pouring device for casting a cast steel volute.

[0019] Figure 2 The schematic diagram is a decomposed structure of a stabilizing component in a molten iron pouring device for casting a cast steel volute.

[0020] Figure 3 This is a schematic structural diagram from another angle of a support frame in a molten iron pouring device for casting a cast steel volute.

[0021] Figure 4 A molten iron pouring device for casting a cast steel volute Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 5 The present invention is a schematic diagram of the exploded structure of a fixed cylinder in a molten iron pouring device for casting a cast steel volute.

[0023] Figure 6 This is a schematic structural diagram from another angle of a pouring bucket in a molten iron pouring device for casting a cast steel volute.

[0024] Legend: 1. Support frame; 2. Support legs; 3. Protective cover; 4. Limit sleeve; 5. Casting bucket; 6. Stabilizing assembly; 61. Support column; 62. Moving column; 63. Threaded rod; 64. Positioning rod; 65. Driven bevel gear; 66. Limiting rod; 67. Rotating rod; 68. Worm gear; 69. Driving bevel gear; 7. Reinforcement assembly; 71. Positioning plate; 72. Driving rod; 73. Toothed sprocket; 74. Pull rope; 75. Fixed column; 76. Sliding Wheel; 77, mounting plate; 78, winding roller; 79, lifting ring; 8, cooling assembly; 81, fixing cylinder; 82, connecting pipe; 83, water outlet pipe; 84, fixing plate; 85, rotating disk; 86, connecting rod; 87, movable plate; 88, movable rod; 89, movable plate; 810, fixing rod; 811, partition; 812, piston plate; 813, water inlet pipe; 9, worm; 10, groove; 11, positioning hole; 12, positioning block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 6The present invention provides a technical solution: a molten iron pouring device for casting a cast steel volute, comprising a support frame 1 and a pouring bucket 5, wherein two support legs 2 are fixedly installed on the lower surface of the support frame 1, a protective cover 3 is fixedly installed on the side wall of the support frame 1, a driving motor is fixedly installed on the inner wall of the protective cover 3, a limiting sleeve 4 is fixedly installed on the inner surface of the support frame 1, a positioning block 12 is fixedly installed on the outer surface of the pouring bucket 5, the positioning block 12 and the limiting sleeve 4 are adapted to each other, a stabilizing component 6 is arranged on the inner wall of the support frame 1, and a reinforcing component 7 and a cooling component 8 are arranged on the upper surface of the support frame 1; The stabilizing assembly 6 includes a supporting column 61 and a rotating rod 67. Two movable columns 62 are fixedly installed on the side wall of the supporting column 61. A threaded rod 63 is threadedly installed on the inner wall of one of the movable columns 62. One end of the threaded rod 63 extends to the outside of the side wall of the movable column 62. A positioning rod 64 is fixedly installed on one end of the threaded rod 63. A driven bevel gear 65 is fixedly installed on the outer surface of the positioning rod 64. A limiting rod 66 is slidably installed on the inner wall of the other movable column 62. A groove 10 is provided on the lower surface of the two supporting legs 2. A positioning hole is provided on the inner side wall of the groove 10. One end of the positioning rod 64 is rotatably connected to the inner side wall of the positioning hole 11 on the supporting leg 2. One end of the limiting rod 66 is rotatably connected to the other supporting leg The inner wall of the positioning hole 11 on the leg 2 is fixedly connected, and a driving bevel gear 69 is fixedly installed on the outer surface of the rotating rod 67, and the driving bevel gear 69 is meshingly connected with the driven bevel gear 65. A cavity is provided on the inside of the support frame 1, and one end of the rotating rod 67 is rotatably connected to the inner wall of the top surface of the cavity. A worm gear 68 is fixedly installed on the outer surface of the rotating rod 67, and the worm gear 68 is located in the cavity. A worm 9 is rotatably installed on the inner wall of the cavity, and the worm 9 is meshingly connected with the worm gear 68. One end of the worm 9 extends to the inside of the limit sleeve 4, and one end of the worm 9 is fixedly connected to the side wall of the positioning block 12, and the other end of the worm 9 extends to the inside of the protective cover 3, and the other end of the worm 9 is fixedly connected to the output end of the drive motor.

[0027] Its specific implementation is as follows: the support frame 1 is fixed to the ground by the support legs 2. When the cast steel volute needs to be cast, the driving motor in the protective cover 3 drives the worm 9 to rotate. The worm 9 drives the pouring bucket 5 to rotate under the limit of the limit sleeve 4 through the positioning block 12, and then the molten iron in the pouring bucket 5 is poured into the mold of the volute. During the rotation of the pouring bucket 5, the worm 9 will drive the rotating rod 67 to rotate through the worm gear 68, and the rotating rod 67 will drive the driving bevel gear 69 to rotate synchronously. Under the action of the driven bevel gear 65, the positioning rod 64 will be driven to rotate in the positioning hole, thereby driving the threaded rod 63 to rotate synchronously. Under the action of the thread, the moving column 62 will move, and the other moving column 62 will move synchronously under the limit of the limit rod 66, thereby driving the support column 61 to move to the outside of the support frame 1.

[0028] The reinforcement assembly 7 includes a positioning plate 71 and a mounting plate 77, the lower surfaces of the positioning plate 71 and the mounting plate 77 are fixedly connected to the upper surface of the support frame 1, a driving rod 72 is rotatably mounted on the inner wall of the positioning plate 71, a sprocket wheel 73 is fixedly mounted on the outer surface of the driving rod 72 and the worm 9, the sprocket wheels 73 are connected by a sprocket transmission, one end of the driving rod 72 extends to the outside of the side wall of the mounting plate 77, a winding roller 78 is fixedly mounted on the outer surface of the driving rod 72, a pull rope 74 is wound around the outer surface of the winding roller 78, a fixing column 75 is fixedly mounted on the outer surface of the support frame 1, one end of the fixing column 75 is provided with a notch, a pulley 76 is rotatably mounted on the inner side wall of the notch through a rotating shaft, a lifting ring 79 is fixedly mounted on the outer surface of the casting bucket 5, and the lifting ring 79 is fixedly connected to one end of the pull rope 74 through the pulley 76.

[0029] The specific implementation is as follows: when the worm 9 rotates, the drive rod 72 is driven to rotate on the inner wall of the positioning plate 71 under the action of the sprocket wheel 73 and the toothed chain. At this time, the drive rod 72 drives the winding roller 78 and the rotating disk 85 to rotate synchronously. When the winding roller 78 rotates, the pull rope 74 is contracted. At this time, the pull rope 74 pulls the lifting ring 79 through the pulley 76, thereby exerting a certain pulling force on the bottom of the casting bucket 5.

[0030] The cooling assembly 8 includes a fixed cylinder 81 and a rotating disk 85. A connecting pipe 82 is installed on the side wall of the fixed cylinder 81. A water outlet pipe 83 is installed on one end of the connecting pipe 82. A water outlet hole is provided on the lower surface of the water outlet pipe 83. A fixing plate 84 is fixedly installed on one end of the water outlet pipe 83. The lower surface of the fixing plate 84 is fixedly connected to the upper surface of the mounting plate 77. A water inlet pipe 813 is installed on the other side wall of the fixed cylinder 81. A one-way valve is fixedly installed on the inner wall of the water inlet pipe 813 and the connecting pipe 82. A partition plate 811 is fixedly installed on the inner wall of the fixed cylinder 81. A piston plate 81 is slidably installed on the inner wall of the fixed cylinder 81. 2. A fixed rod 810 is fixedly installed on the side wall of the piston plate 812, one end of the fixed rod 810 extends to the outside of the side wall of the partition plate 811 and is fixedly installed with a movable plate 89, a movable rod 88 is rotatably installed on the side wall of the movable plate 89, a travel groove is provided on the side wall of the fixed cylinder 81, one end of the movable rod 88 extends to the outside of the side wall of the fixed cylinder 81 through the travel groove, the side wall of the rotating disk 85 is fixedly connected to one end of the driving rod 72, a connecting rod 86 is rotatably installed on the side wall of the rotating disk 85 near the edge, one end of the connecting rod 86 is fixedly installed with a movable plate 87, and the side wall of the movable plate 87 is fixedly connected to one end of the movable rod 88.

[0031] The specific implementation is as follows: the rotating disk 85 will drive the connecting rod 86 to move when it rotates. At this time, the movable plate 87 drives the movable rod 88 to move back and forth in the stroke groove. The movable rod 88 will drive the movable plate 89 to move back and forth in the fixed cylinder 81. At this time, the movable plate 89 drives the piston plate 812 to move back and forth through the fixed rod 810, thereby absorbing water into the fixed cylinder 81 through the water inlet pipe 813, and then transporting the water to the water outlet pipe 83 through the connecting pipe 82, and dripping onto the outer surface of the winding roller 78 through the water outlet hole, so as to cool the pull rope 74 wrapped around the outer surface of the winding roller 78.

[0032] Working principle: the support frame 1 is fixed to the ground by the support legs 2. When the cast steel volute needs to be cast, the driving motor in the protective cover 3 drives the worm 9 to rotate. The worm 9 drives the casting bucket 5 to rotate under the limit of the limit sleeve 4 through the positioning block 12, and then the molten iron in the casting bucket 5 is poured into the mold of the volute. During the rotation of the casting bucket 5, the worm 9 drives the rotating rod 67 to rotate through the worm gear 68. The rotating rod 67 drives the driving bevel gear 69 to rotate synchronously. Under the action of the driven bevel gear 65, the positioning rod 64 is driven to rotate in the positioning hole, thereby driving the threaded rod 63 to rotate synchronously. Under the action of the thread, the moving column 62 will move, and the other moving column 62 will move synchronously under the limit of the limit rod 66, thereby driving the support column 61 to move to the outside of the support frame 1. While the worm 9 rotates, it will The driving rod 72 is driven to rotate on the inner wall of the positioning plate 71. At this time, the driving rod 72 will drive the winding roller 78 and the rotating disk 85 to rotate synchronously. The winding roller 78 will contract the draw rope 74 when rotating. At this time, the draw rope 74 pulls the lifting ring 79 through the pulley 76, thereby exerting a certain pulling force on the bottom of the casting bucket 5. The rotating disk 85 will drive the connecting rod 86 to move when rotating. At this time, the movable rod 88 is driven to move back and forth in the stroke groove under the action of the movable plate 87. The movable rod 88 will drive the movable plate 89 to move back and forth in the fixed cylinder 81. At this time, the movable plate 89 drives the piston plate 812 to move back and forth through the fixed rod 810, thereby absorbing water into the fixed cylinder 81 through the water inlet pipe 813, and then the water is transported to the water outlet pipe 83 through the connecting pipe 82, and drips to the outer surface of the winding roller 78 through the water outlet hole, so as to cool the draw rope 74 wrapped around the outer surface of the winding roller 78.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A molten iron pouring device for casting a cast steel volute, comprising a support frame (1) and a pouring bucket (5), characterized in that: Two support legs (2) are fixedly mounted on the lower surface of the support frame (1); a protective cover (3) is fixedly mounted on the side wall of the support frame (1); a driving motor is fixedly mounted on the inner wall of the protective cover (3); a limiting sleeve (4) is fixedly mounted on the inner surface of the support frame (1); a positioning block (12) is fixedly mounted on the outer surface of the casting bucket (5); the positioning block (12) and the limiting sleeve (4) are mutually adapted; a stabilizing component (6) is arranged on the inner wall of the support frame (1); and a reinforcing component (7) and a cooling component (8) are arranged on the upper surface of the support frame (1); The stabilizing assembly (6) comprises a supporting column (61) and a rotating rod (67), two movable columns (62) are fixedly mounted on the side wall of the supporting column (61), a threaded rod (63) is threadedly mounted on the inner wall of one of the movable columns (62), one end of the threaded rod (63) extends outside the side wall of the movable column (62), a positioning rod (64) is fixedly mounted on one end of the threaded rod (63), and a driven bevel gear (65) is fixedly mounted on the outer surface of the positioning rod (64).

2. The molten iron pouring device for casting a cast steel volute according to claim 1, characterized in that: A limiting rod (66) is slidably mounted on the inner wall of the other movable column (62); a groove (10) is provided on the lower surface of the two supporting legs (2); a positioning hole is provided on the inner wall of the groove (10); one end of the positioning rod (64) is rotatably connected to the inner wall of the positioning hole (11) on the supporting leg (2); and one end of the limiting rod (66) is fixedly connected to the inner wall of the positioning hole (11) on the other supporting leg (2).

3. The molten iron pouring device for casting a cast steel volute according to claim 2, characterized in that: A driving bevel gear (69) is fixedly mounted on the outer surface of the rotating rod (67), and the driving bevel gear (69) is meshingly connected with the driven bevel gear (65). A cavity is provided inside the support frame (1), and one end of the rotating rod (67) is rotatably connected to the inner wall of the top surface of the cavity. A worm gear (68) is fixedly mounted on the outer surface of the rotating rod (67).

4. The molten iron pouring device for casting a cast steel volute according to claim 3, characterized in that: The worm wheel (68) is located in the cavity, and a worm (9) is rotatably mounted on the inner wall of the cavity. The worm (9) is meshingly connected with the worm wheel (68), one end of the worm (9) extends to the inside of the limit sleeve (4), one end of the worm (9) is fixedly connected to the side wall of the positioning block (12), the other end of the worm (9) extends to the inside of the protective cover (3), and the other end of the worm (9) is fixedly connected to the output end of the drive motor.

5. The molten iron pouring device for casting a cast steel volute according to claim 4, characterized in that: The reinforcement assembly (7) comprises a positioning plate (71) and a mounting plate (77); the lower surfaces of the positioning plate (71) and the mounting plate (77) are fixedly connected to the upper surface of the support frame (1); a driving rod (72) is rotatably mounted on the inner wall of the positioning plate (71); toothed sprockets (73) are fixedly mounted on the outer surfaces of the driving rod (72) and the worm (9); and the toothed sprockets (73) are connected to each other via a toothed chain transmission.

6. The molten iron pouring device for casting a cast steel volute according to claim 5, characterized in that: One end of the driving rod (72) extends to the outside of the side wall of the mounting plate (77); a winding roller (78) is fixedly mounted on the outer surface of the driving rod (72); a pull rope (74) is wound around the outer surface of the winding roller (78); and a fixing column (75) is fixedly mounted on the outer surface of the supporting frame (1).

7. The molten iron pouring device for casting a cast steel volute according to claim 6, characterized in that: A notch is provided at one end of the fixing column (75), a pulley (76) is rotatably mounted on the inner side wall of the notch via a rotating shaft, a lifting ring (79) is fixedly mounted on the outer surface of the pouring bucket (5), and the lifting ring (79) is fixedly connected to one end of the pull rope (74) via the pulley (76).

8. The molten iron pouring device for casting a cast steel volute according to claim 7, characterized in that: The cooling assembly (8) comprises a fixed cylinder (81) and a rotating disk (85); a connecting pipe (82) is installed in communication with the side wall of the fixed cylinder (81); a water outlet pipe (83) is installed in communication with one end of the connecting pipe (82); a water outlet hole is provided on the lower surface of the water outlet pipe (83); a fixing plate (84) is fixedly installed on one end of the water outlet pipe (83); and the lower surface of the fixing plate (84) is fixedly connected to the upper surface of the mounting plate (77).

9. The molten iron pouring device for casting a cast steel volute according to claim 8, characterized in that: A water inlet pipe (813) is connected and installed on the other side wall of the fixed cylinder (81), and a one-way valve is fixedly installed on the inner wall of the water inlet pipe (813) and the connecting pipe (82). A partition plate (811) is fixedly installed on the inner wall of the fixed cylinder (81), and a piston plate (812) is slidably installed on the inner wall of the fixed cylinder (81). A fixed rod (810) is fixedly installed on the side wall of the piston plate (812), one end of the fixed rod (810) extends to the outside of the side wall of the partition plate (811) and is fixedly installed with a movable plate (89), and a movable rod (88) is rotatably installed on the side wall of the movable plate (89), and a travel groove is provided on the side wall of the fixed cylinder (81), and one end of the movable rod (88) extends to the outside of the side wall of the fixed cylinder (81) through the travel groove.

10. The molten iron pouring device for casting a cast steel volute according to claim 9, characterized in that: The side wall of the rotating disk (85) is fixedly connected to one end of the driving rod (72); a connecting rod (86) is rotatably mounted on the side wall of the rotating disk (85) near the edge; a movable plate (87) is fixedly mounted on one end of the connecting rod (86); and the side wall of the movable plate (87) is fixedly connected to one end of the movable rod (88).

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