Centrifugal casting machine resistant to corrosion and good in sealing performance

Abstract

The invention discloses a centrifugal casting machine resistant to corrosion and good in sealing performance, relates to the field of centrifugal casting machines, and solves the problems that when an existing centrifugal casting machine resistant to corrosion and good in sealing performance is used, the sizes of openings in the two ends are constant, and gas-liquid impurities in the centrifugal casting machine are prone to splashing outwards in the high-speed rotating process. Comprising a base, a centrifugal barrel, a driving mechanism, a feeding mechanism, an opening and closing mechanism and a suction mechanism, the feeding mechanism comprises a feeding pipe, and the opening and closing mechanism comprises a baffle. When the centrifugal cylinder rotates, the baffle is controlled to gradually and synchronously rotate to gradually shrink the opening in one side of the centrifugal cylinder, the shrinking degree is increased along with the increase of the rotating speed of the centrifugal cylinder, the outward splashing degree of internal metal when the centrifugal cylinder rapidly rotates is reduced, and waste gas and dust in the centrifugal cylinder are pumped into a collecting box through a suction mechanism to be collected.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal casting machines, in particular to a centrifugal casting machine that is corrosion-resistant and has good sealing performance. Background Art

[0002] Centrifugal casting is a casting method in which molten metal is poured into a high-speed rotating metal mold. Under the action of a centrifugal casting machine, the mold rotates at high speed and is cooled and crystallized under the drive of its centrifugal force. The number of revolutions of the mold is an important parameter of centrifugal casting. There must be enough centrifugal force to increase the density of the casting metal, but the centrifugal force cannot be too large to avoid hindering the shrinkage of the metal. The characteristics of centrifugal casting are that the molten metal fills the mold and solidifies under the action of centrifugal force, the metal shrinkage compensation effect is good, the casting structure is dense, and the mechanical properties are good; casting hollow castings do not require pouring and risers, and the metal utilization rate can be greatly improved.

[0003] The existing corrosion-resistant and well-sealed centrifugal casting machines need to leave openings at both ends when in use, to facilitate the injection of molten metal and to allow impurities inside the casting machine to be discharged with the gas. However, in order to facilitate the output of metal pipes, the existing casting machines set the opening sizes at both ends to be relatively fixed. When in use, as the speed increases, the internal molten metal will accelerate to splash outward. The protection function of the two ends of the existing centrifugal casting machines against splashing metal is not comprehensive and efficient enough, resulting in a high risk during the processing process, and operators are easily scalded by splashing metal. To this end, we propose a corrosion-resistant and well-sealed centrifugal casting machine. Summary of the invention

[0004] The object of the present invention is to provide a centrifugal casting machine which is corrosion-resistant and has good sealing performance and is convenient for automatically controlling the size of the openings at both ends of the centrifugal cylinder and reducing the degree of internal gas and liquid splashing, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion-resistant centrifugal casting machine with good sealing performance, comprising a base, a centrifugal cylinder, a driving mechanism, a feeding mechanism, an opening and closing mechanism and a suction mechanism, wherein an inner sleeve is arranged in the centrifugal cylinder, the driving mechanism is installed on the base, and is used to drive the centrifugal cylinder to rotate and centrifuge, the feeding mechanism comprises a feeding pipe installed on the upper side of the base, and is used to input molten metal into the centrifugal cylinder through the feeding pipe for centrifugal casting, and the opening and closing mechanism comprises a plurality of baffles installed on one side of the centrifugal cylinder, and the baffles are fan-shaped and are used to When the centrifugal cylinder rotates, the baffle is controlled to rotate gradually and synchronously to gradually reduce the opening on one side of the centrifugal cylinder, and the degree of reduction increases with the increase of the rotation speed of the centrifugal cylinder, thereby reducing the degree of internal metal splashing out when the centrifugal cylinder rotates rapidly. The suction mechanism includes a collecting box installed on the base, and a plurality of groups of driving blades are provided on the side of the baffle, which are used to drive the driving blades to rotate when the centrifugal cylinder rotates, and the exhaust gas and dust in the centrifugal cylinder are extracted into the collecting box for collection, so as to automatically control the size of the openings at both ends of the centrifugal cylinder and reduce the degree of internal gas and liquid splashing.

[0006] Preferably, the opening and closing mechanism also includes a first threaded ring threadedly connected to the outer wall of one end of the centrifugal barrel, the outer wall of the first threaded ring is rotatably connected to the collecting box, a guide groove is provided on the base, the collecting box is slidably connected to the guide groove in a horizontal direction, a fixed disk is fixedly connected to the side of the first threaded ring, a plurality of groups of rotating shafts are evenly rotatably connected to the fixed disk, the baffle is fixedly connected to the rotating shaft, and a rotating member for controlling the rotation angle of the baffle is provided on the rotating shaft, so as to facilitate controlling the baffle to gradually rotate synchronously when the centrifugal barrel rotates to gradually reduce the opening on one side of the centrifugal barrel, and the degree of reduction increases with the increase of the rotation speed of the centrifugal barrel, thereby reducing the degree of internal metal splashing out when the centrifugal barrel rotates rapidly.

[0007] Preferably, the rotating member includes a collecting ring fixedly mounted on the collecting box, the inner wall of the collecting ring is rotatably connected to a connecting disk, the side of the connecting disk is coaxially fixedly connected to a mounting disk, the mounting disk is fixedly connected to a plurality of connecting blocks fixedly connected to the fixed disk, the side of the mounting disk is rotatably connected to an inner gear ring, a first gear meshing with the inner gear ring is coaxially fixedly connected to the rotating shaft, and the mounting disk is provided with a control member for controlling the rotation angle of the inner gear ring according to the rotation speed of the centrifuge barrel, so as to facilitate the control of the rotation angle of the baffle.

[0008] Preferably, the control member includes a second gear rotatably connected to the mounting disk, a third gear coaxially fixedly connected to the second gear and meshing with the inner gear ring, a plurality of groups of sliding grooves are evenly arranged on the mounting disk, and an adjustment member for sensing centrifugal force and controlling the rotation angle of the second gear is provided in the sliding groove, so as to facilitate controlling the rotation angle of the inner gear ring according to the rotation speed of the centrifuge barrel.

[0009] Preferably, the adjusting member includes a rack slidably connected to the inner wall of the sliding groove, one side of the rack is meshed with the second gear, a centrifugal block is fixedly connected to the rack, and a tension spring fixedly connected to the sliding groove is fixedly connected to the side of the rack away from the centrifugal block, so as to facilitate sensing the centrifugal force and controlling the rotation angle of the second gear.

[0010] Preferably, the suction mechanism also includes a mounting ring fixedly mounted on the mounting disk, and the multiple groups of driving blades are respectively fixedly connected to the mounting rings. The connecting disk is provided with a collecting groove connected to one side of the driving blades, and the collecting ring is provided with an annular groove that can be connected to the collecting box. The connecting disk is evenly provided with multiple groups of connecting pipes for connecting the annular groove and the collecting groove, so as to drive the driving blades to rotate when the centrifugal barrel rotates, and the exhaust gas and dust in the centrifugal barrel are extracted into the collecting box for collection.

[0011] Preferably, the feeding mechanism also includes a sliding frame slidably connected to the guide groove in a horizontal direction, and a second threaded ring is rotatably connected to the sliding frame and threadedly connected to the outer wall of one end of the centrifugal cylinder. The feeding pipe passes through the sliding frame and is fixedly connected to the sliding frame. The second threaded ring and the side of the sliding frame are respectively provided with multiple groups of ventilation holes, which are convenient for feeding the molten metal into the centrifugal cylinder through the feeding pipe for centrifugal casting.

[0012] Preferably, the driving mechanism includes a mounting platform fixedly mounted on the base, a plurality of groups of support rings are fixedly connected to the mounting platform, the outer wall of the centrifuge barrel is rotatably connected to the inner wall of the support ring, a driving motor is fixedly connected to the mounting platform, a fourth gear is coaxially fixedly connected to the output end of the driving motor, and an outer gear ring meshing with the fourth gear is fixedly connected to the outer wall of the centrifuge barrel, so as to drive the centrifuge barrel to rotate and centrifuge.

[0013] Preferably, the suction mechanism further comprises an air outlet net plugged into the side of the collection box, and a filter is fixedly connected to one side of the air outlet net to facilitate filtering and transporting the gas.

[0014] Preferably, the inner wall of the centrifugal cylinder is evenly fixedly connected with a plurality of groups of limit rods, and the outer wall of the inner sleeve is evenly provided with a plurality of groups of limit grooves which can be slidably connected with the limit rods in the horizontal direction, so as to facilitate the disassembly and assembly of the inner sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention provides a corrosion-resistant centrifugal casting machine with good sealing performance, which solves the problem that the opening sizes of both ends of the existing corrosion-resistant centrifugal casting machine are constant during use, and the internal gas, liquid and impurities are easy to splash outward during high-speed rotation. It is convenient to input molten metal into the centrifugal cylinder through the feeding pipe, and drive the centrifugal cylinder to rotate and centrifuge through the driving mechanism. When the centrifugal cylinder rotates, the baffle is controlled to rotate synchronously gradually to gradually reduce the opening on one side of the centrifugal cylinder, and the degree of reduction increases with the increase of the rotation speed of the centrifugal cylinder, thereby reducing the degree of internal metal splashing outward when the centrifugal cylinder rotates rapidly, and the centrifugal cylinder is sucked out through the suction mechanism. The waste gas and dust inside are extracted into the collection box for collection. The faster the speed of the centrifugal barrel is, the greater the centrifugal force on the internal gas, liquid and other substances is. At this time, the degree of closing of the baffle is greater, which can effectively avoid the splashing of internal gas, liquid and other substances. When the speed is reduced, the degree of splashing is smaller. At this time, the baffle gradually rotates open, and the automatic opening and closing operation of the baffle can be realized without manual control. It is more convenient and efficient to use. Compared with the state of the traditional centrifugal casting machine with both ends directly open, the device has better sealing performance. Under the premise of ensuring the circulation and transportation of gas, it greatly reduces the degree of splashing of internal gas and liquid through the two ends of the centrifugal barrel to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Fig. 1 is a schematic diagram of the overall structure of the present invention; FIG2 is a schematic diagram of a partial structure of a feeding mechanism of the present invention; FIG3 is an exploded view of a local structure of the present invention; FIG4 is a schematic diagram of a partial structure of a driving mechanism of the present invention; FIG5 is a schematic diagram of the internal structure of a centrifuge cylinder according to the present invention; FIG6 is a cross-sectional view of a local structure of the suction mechanism of the present invention; FIG7 is an enlarged view of area A in FIG6 ; FIG8 is a schematic diagram of a partial structure of the opening and closing mechanism of the present invention; FIG9 is an enlarged view of area B in FIG8 ; FIG10 is a schematic diagram of the structure of the baffle in the closed state of the present invention; FIG11 is an enlarged view of area C in FIG10 ; FIG. 12 is a schematic structural diagram of the baffle in the open state of the present invention.

[0017] In the figure: 1-base; 2-centrifugal cylinder; 3-inner sleeve; 4-driving mechanism; 5-feeding mechanism; 6-feeding pipe; 7-opening and closing mechanism; 8-baffle; 9-suction mechanism; 10-collecting box; 11-driving blade; 12-first threaded ring; 13-guide groove; 14-fixed disk; 15-rotating shaft; 16-rotating member; 17-collecting ring; 18-connecting disk; 19-mounting disk; 20-connecting block; 21-inner gear ring; 22-first gear; 23-control member; 24 -second gear; 25-third gear; 26-sliding groove; 27-adjusting member; 28-rack; 29-centrifugal block; 30-tension spring; 31-mounting ring; 32-collecting tank; 33-annular groove; 34-connecting pipe; 35-sliding frame; 36-second threaded ring; 37-mounting table; 38-support ring; 39-driving motor; 40-fourth gear; 41-outer gear ring; 42-air outlet net; 43-filter net; 44-limiting rod; 45-limiting groove; 46-ventilation hole. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiment 1: Please refer to Figures 1 to 7. The centrifugal casting machine shown in the figure is corrosion-resistant and has good sealing performance, including a base 1, a centrifugal cylinder 2, a driving mechanism 4, a feeding mechanism 5, an opening and closing mechanism 7 and a suction mechanism 9. The centrifugal cylinder 2 is provided with an inner sleeve 3, and the base 1 is provided with a guide groove 13. The driving mechanism 4 is installed on the base 1 and is used to drive the centrifugal cylinder 2 to rotate and centrifuge. The feeding mechanism 5 includes a feeding pipe 6 installed on the upper side of the base 1, which is used to input molten metal into the centrifugal cylinder 2 through the feeding pipe 6 for centrifugal casting. The opening and closing mechanism 7 includes a plurality of groups of feeding pipes installed on the centrifugal cylinder 2. The baffle 8 on one side of the core cylinder 2 is fan-shaped and is used to control the baffle 8 to gradually rotate synchronously when the centrifugal cylinder 2 rotates to gradually reduce the opening on one side of the centrifugal cylinder 2, and the degree of reduction increases with the increase in the rotation speed of the centrifugal cylinder 2, thereby reducing the degree of internal metal splashing out when the centrifugal cylinder 2 rotates rapidly. The suction mechanism 9 includes a collecting box 10 installed on the base 1, and a plurality of groups of driving blades 11 are provided on the side of the baffle 8, which are used to drive the driving blades 11 to rotate when the centrifugal cylinder 2 rotates, so as to extract the exhaust gas and dust in the centrifugal cylinder 2 into the collecting box 10 for collection.

[0020] Please refer to Figures 1 to 5. The feeding mechanism 5 in the figure also includes a sliding frame 35 that is slidably connected to the guide groove 13 in the horizontal direction. The sliding frame 35 is rotatably connected to a second threaded ring 36 that is threadedly connected to the outer wall of one end of the centrifugal cylinder 2. The feeding pipe 6 passes through the sliding frame 35 and is fixedly connected to the sliding frame 35. A plurality of groups of limit rods 44 are evenly fixedly connected to the inner wall of the centrifugal cylinder 2. A plurality of groups of limit grooves 45 that can be slidably connected to the limit rods 44 in the horizontal direction are evenly arranged on the outer wall of the inner sleeve 3. A plurality of groups of ventilation holes 46 are respectively arranged on the sides of the second threaded ring 36 and the sliding frame 35.

[0021] Please refer to Figures 1 to 5. The driving mechanism 4 in the figures includes a mounting platform 37 fixedly mounted on the base 1, and a plurality of support rings 38 are fixedly connected to the mounting platform 37. The outer wall of the centrifuge cylinder 2 is rotatably connected to the inner wall of the support ring 38. A driving motor 39 is fixedly connected to the mounting platform 37. The model of the driving motor 39 is preferably Y80M1-2. The output end of the driving motor 39 is coaxially fixedly connected to a fourth gear 40, and the outer wall of the centrifuge cylinder 2 is fixedly connected to an outer gear ring 41 meshing with the fourth gear 40.

[0022] In this embodiment, when not in use, the second threaded ring 36 can be released from the threaded connection with the centrifuge barrel 2, and the inner sleeve 3 can be disassembled and assembled. The inner sleeve 3 can be inserted by aligning the limit groove 45 with the limit rod 44, and the inner sleeve 3 and the metal product inside can be pulled out in the reverse direction. When in use, the inner sleeve 3 is first installed in the centrifuge barrel 2, and the sliding frame 35 is pushed to make the second threaded ring 36 fit with one end of the centrifuge barrel 2, and then the second threaded ring 36 is rotated to threadably connect the second threaded ring 36 to one end of the centrifuge barrel 2, and the other end is connected through the sliding collection box 10, and the opening and closing mechanism 7 and the suction mechanism 9 are docked and installed with the centrifuge barrel 2.

[0023] Start the drive motor 39 to drive the fourth gear 40 to rotate, so that the outer gear ring 41 drives the centrifugal cylinder 2 to rotate. The rotation of the centrifugal cylinder 2 drives the inner sleeve 3 to rotate, and the molten metal is input through the feed pipe 6. The metal is swung centrifugally inside the inner sleeve 3 and gradually solidifies to complete the centrifugal casting operation. During the rotation of the centrifugal cylinder 2, the opening and closing mechanism 7 will be linked to make the baffle 8 gradually rotate and close, reducing the size of the opening at one end of the centrifugal cylinder 2 while avoiding the splashing of the internal metal. At the same time, the suction mechanism 9 is linked to run to drive the driving blade 11 to rotate, and the exhaust gas and dust in the centrifugal cylinder 2 are extracted into the collection box 10 for collection. The inner sleeve 3 adopts a porcelain inner wall, which effectively improves the corrosion resistance and is also convenient for replacement and use.

[0024] Embodiment 2: Please refer to Figures 1-12 for explanation of Example 2. This example further explains Example 1. The opening and closing mechanism 7 shown in the figure also includes a first threaded ring 12 threadedly connected to the outer wall of one end of the centrifugal cylinder 2. The outer wall of the first threaded ring 12 is rotatably connected to the collecting box 10. The collecting box 10 is slidably connected to the guide groove 13 in the horizontal direction. A fixed plate 14 is fixedly connected to the side of the first threaded ring 12. A plurality of sets of rotating shafts 15 are evenly rotatably connected to the fixed plate 14. The baffle 8 is fixedly connected to the rotating shaft 15. The rotating shaft 15 is provided with a rotating member 16 for controlling the rotation angle of the baffle 8.

[0025] Please refer to Figures 1 to 12. The rotating member 16 in the figure includes a collecting ring 17 fixedly mounted on the collecting box 10, the inner wall of the collecting ring 17 is rotatably connected to a connecting disk 18, the side of the connecting disk 18 is coaxially fixedly connected to a mounting disk 19, a plurality of connecting blocks 20 fixedly connected to the fixed disk 14 are fixedly connected to the mounting disk 19, an inner gear ring 21 is rotatably connected to the side of the mounting disk 19, a first gear 22 meshing with the inner gear ring 21 is coaxially fixedly connected to the rotating shaft 15, and a control member 23 for controlling the rotation angle of the inner gear ring 21 according to the rotation speed of the centrifugal barrel 2 is provided on the mounting disk 19.

[0026] Please refer to Figures 8 to 11. The control member 23 in the figure includes a second gear 24 rotatably connected to the mounting plate 19, and a third gear 25 meshing with the inner gear ring 21 is coaxially fixedly connected to the second gear 24. A plurality of sets of sliding grooves 26 are evenly arranged on the mounting plate 19. An adjusting member 27 for sensing centrifugal force and controlling the rotation angle of the second gear 24 is provided in the sliding groove 26. The adjusting member 27 includes a rack 28 slidably connected to the inner wall of the sliding groove 26, one side of the rack 28 meshes with the second gear 24, a centrifugal block 29 is fixedly connected to the rack 28, and a tension spring 30 fixedly connected to the sliding groove 26 is fixedly connected to the side of the rack 28 away from the centrifugal block 29.

[0027] In this embodiment, when the centrifugal cylinder 2 accelerates and rotates, it will drive the fixed disk 14, the connecting disk 18 and the mounting disk 19 to rotate rapidly together. The centrifugal block 29 is made of a high-density alloy, and the baffle 8 is made of a lightweight metal, so that the centrifugal block 29 is subjected to a large centrifugal force during the rotation process, which drives the rack 28 to slide, pulls the tension spring 30, and the rack 28 drives the second gear 24 to rotate, so that the third gear 25 drives the inner gear ring 21 to rotate, and the inner gear ring 21 drives the multiple groups of first gears 22 to rotate synchronously, so that the rotating shaft 15 and the baffle 8 can rotate synchronously, and the baffle 8 can rotate synchronously. The plate 8 is rotated toward the middle to gradually close the opening at one end of the centrifugal cylinder 2, reduce the size of the opening, and reduce the degree of splashing of internal metal and dust impurities. Conversely, when the speed of the centrifugal cylinder 2 is reduced, the centrifugal force on the centrifugal block 29 is reduced, and the tension spring 30 is gradually pulled back, driving the rack 28 and the centrifugal block 29 to slide and reset in the opposite direction, and the second gear 24, the third gear 25 and the inner gear ring 21 rotate in the opposite direction, driving the first gear 22 to rotate in the opposite direction, and the baffle 8 can be rotated outward to open the opening at one end of the centrifugal cylinder 2, and the inner sleeve 3 in the centrifugal cylinder 2 can be directly drawn out.

[0028] It should be noted that: as the speed of the centrifugal cylinder 2 is faster, the centrifugal force on the internal gas, liquid and other substances is greater, and the degree of closing of the baffle 8 is greater at this time, which can effectively avoid the splashing of the internal gas, liquid and other substances. When the speed is reduced, the degree of splashing is smaller. At this time, the baffle 8 gradually rotates open, and the automatic opening and closing operation of the baffle 8 can be achieved without manual control. It is more convenient and efficient to use. Compared with the state of the traditional centrifugal casting machine with both ends directly open, the device has better sealing performance. Under the premise of ensuring the flow and transportation of gas, the degree of splashing of the internal gas and liquid to the outside through the two ends of the centrifugal cylinder 2 is greatly reduced.

[0029] Embodiment 3: Please refer to Figures 1 to 9 for explanation of Example 3. This example further explains Example 1. The suction mechanism 9 shown in the figure also includes a mounting ring 31 fixedly mounted on the mounting plate 19, and multiple groups of driving blades 11 are respectively fixedly connected to the mounting ring 31. A collecting groove 32 connected to one side of the driving blade 11 is provided on the connecting plate 18, and an annular groove 33 that can be connected to the collecting box 10 is provided on the collecting ring 17. Multiple groups of connecting pipes 34 for connecting the annular groove 33 and the collecting groove 32 are evenly provided on the connecting plate 18. The suction mechanism 9 also includes an air outlet net 42 plugged into the side of the collecting box 10, and a filter net 43 is fixedly connected to one side of the air outlet net 42.

[0030] In the present embodiment, when the mounting disk 19 rotates, the mounting ring 31 and the driving blade 11 are driven to rotate at high speed. The driving blade 11 draws the splashed material in the centrifugal barrel 2 to the collecting groove 32, and throws it to the annular groove 33 through the connecting pipe 34, and is transported to the collecting box 10 through the bottom of the annular groove 33. The gas will be filtered by the filter net 43 and discharged to the outside through the air outlet net 42. The impurities are collected and accumulated inside the collecting box 10. The impurities in the collecting box 10 can be cleaned by opening the air outlet net 42. The gas will be drawn into the centrifugal barrel 2 through the ventilation hole 46 and discharged from the other end of the centrifugal barrel 2, thereby improving the internal air and impurity transportation output efficiency. The device automatically drives the driving blade 11 to rotate and suck through the power when the centrifugal barrel 2 rotates, and the magnitude of the suction force is directly related to the rotation speed of the centrifugal barrel 2. No manual control is required, and the operation is more convenient.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal casting machine with good corrosion resistance and sealing performance, characterized in that: include: A base (1) and a centrifugal cylinder (2), wherein an inner sleeve (3) is provided in the centrifugal cylinder (2); Also includes: A driving mechanism (4), the driving mechanism (4) being mounted on the base (1) and used for driving the centrifuge cylinder (2) to rotate and centrifuge; A feeding mechanism (5), the feeding mechanism (5) comprising a feeding pipe (6) mounted on the upper side of the base (1), and used for feeding molten metal into the centrifugal cylinder (2) through the feeding pipe (6) for centrifugal casting; An opening and closing mechanism (7), the opening and closing mechanism (7) comprising a plurality of baffles (8) mounted on one side of the centrifugal cylinder (2), the baffles (8) being fan-shaped and used to control the baffles (8) to gradually rotate synchronously when the centrifugal cylinder (2) rotates, thereby gradually reducing the opening on one side of the centrifugal cylinder (2), and the degree of reduction increases as the rotation speed of the centrifugal cylinder (2) increases, thereby reducing the degree of metal splashing outwards from the inside when the centrifugal cylinder (2) rotates rapidly; A suction mechanism (9), the suction mechanism (9) comprising a collection box (10) mounted on the base (1), a plurality of groups of driving blades (11) being provided on the side of the baffle (8), for driving the driving blades (11) to rotate when the centrifugal cylinder (2) rotates, thereby extracting the exhaust gas and dust in the centrifugal cylinder (2) into the collection box (10) for collection.

2. A centrifugal casting machine with good corrosion resistance and sealing performance according to claim 1, characterized in that: The opening and closing mechanism (7) further comprises a first threaded ring (12) threadedly connected to the outer wall of one end of the centrifugal cylinder (2); the outer wall of the first threaded ring (12) is rotatably connected to the collection box (10); a guide groove (13) is provided on the base (1); the collection box (10) is slidably connected to the guide groove (13) in a horizontal direction; a fixed disk (14) is fixedly connected to the side of the first threaded ring (12); a plurality of groups of rotating shafts (15) are evenly rotatably connected to the fixed disk (14); the baffle (8) is fixedly connected to the rotating shaft (15); and a rotating member (16) for controlling the rotation angle of the baffle (8) is provided on the rotating shaft (15).

3. A centrifugal casting machine with good corrosion resistance and sealing performance according to claim 2, characterized in that: The rotating member (16) comprises a collecting ring (17) fixedly mounted on the collecting box (10); a connecting disk (18) is rotatably connected to the inner wall of the collecting ring (17); a mounting disk (19) is coaxially fixedly connected to the side of the connecting disk (18); a plurality of connecting blocks (20) fixedly connected to the fixed disk (14) are fixedly connected to the mounting disk (19); an inner gear ring (21) is rotatably connected to the side of the mounting disk (19); a first gear (22) meshing with the inner gear ring (21) is coaxially fixedly connected to the rotating shaft (15); and a control member (23) for controlling the rotation angle of the inner gear ring (21) according to the rotation speed of the centrifugal barrel (2) is provided on the mounting disk (19).

4. A centrifugal casting machine with good corrosion resistance and sealing performance according to claim 3, characterized in that: The control member (23) comprises a second gear (24) rotatably connected to the mounting plate (19); a third gear (25) meshing with the inner gear ring (21) is coaxially fixedly connected to the second gear (24); a plurality of groups of sliding grooves (26) are evenly arranged on the mounting plate (19); and an adjusting member (27) for sensing centrifugal force and controlling the rotation angle of the second gear (24) is arranged in the sliding groove (26).

5. A centrifugal casting machine with good corrosion resistance and sealing performance according to claim 4, characterized in that: The adjusting member (27) comprises a rack (28) slidably connected to the inner wall of the sliding groove (26), one side of the rack (28) meshes with the second gear (24), a centrifugal block (29) is fixedly connected to the rack (28), and a tension spring (30) fixedly connected to the sliding groove (26) is fixedly connected to the side of the rack (28) away from the centrifugal block (29).

6. The corrosion-resistant and sealing centrifugal casting machine according to claim 3, characterized in that: The suction mechanism (9) further comprises a mounting ring (31) fixedly mounted on the mounting plate (19); a plurality of groups of the driving blades (11) are respectively fixedly connected to the mounting ring (31); a collecting groove (32) connected to one side of the driving blades (11) is provided on the connecting plate (18); an annular groove (33) capable of being connected to the collecting box (10) is provided on the collecting ring (17); and a plurality of groups of connecting pipes (34) for connecting the annular groove (33) and the collecting groove (32) are evenly provided on the connecting plate (18).

7. A centrifugal casting machine with good corrosion resistance and sealing performance according to claim 2, characterized in that: The feeding mechanism (5) further comprises a sliding frame (35) slidably connected to the guide groove (13) in a horizontal direction, a second threaded ring (36) rotatably connected to the sliding frame (35) and threadedly connected to the outer wall of one end of the centrifuge cylinder (2), the feeding pipe (6) passes through the sliding frame (35) and is fixedly connected to the sliding frame (35), and a plurality of ventilation holes (46) are respectively provided on the side surfaces of the second threaded ring (36) and the sliding frame (35).

8. The corrosion-resistant and sealing centrifugal casting machine according to claim 1, characterized in that: The driving mechanism (4) comprises a mounting platform (37) fixedly mounted on the base (1), a plurality of groups of support rings (38) being fixedly connected to the mounting platform (37), the outer wall of the centrifugal cylinder (2) being rotatably connected to the inner wall of the support ring (38), a driving motor (39) being fixedly connected to the mounting platform (37), a fourth gear (40) being coaxially fixedly connected to the output end of the driving motor (39), and an outer gear ring (41) meshing with the fourth gear (40) being fixedly connected to the outer wall of the centrifugal cylinder (2).

9. The corrosion-resistant and sealing centrifugal casting machine according to claim 1, characterized in that: The suction mechanism (9) further comprises an air outlet net (42) plugged into a side surface of the collection box (10), and a filter net (43) is fixedly connected to one side of the air outlet net (42).

10. The corrosion-resistant and sealing centrifugal casting machine according to claim 1, characterized in that: The inner wall of the centrifugal cylinder (2) is evenly and fixedly connected with a plurality of groups of limit rods (44), and the outer wall of the inner sleeve (3) is evenly provided with a plurality of groups of limit grooves (45) capable of being slidably connected to the limit rods (44) in a horizontal direction.

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