Roller drop hammer

Abstract

The application provides a drum shakeout machine, which comprises a mesh cylinder, the inner wall of the mesh cylinder is fixed with helical blades for pushing materials to the end, a conical cylinder one and a conical cylinder two are fixedly connected to the outer wall of the mesh cylinder, the large-diameter ends of the conical cylinder one and the conical cylinder two are opposite and are connected and fixed through a plurality of annular arrays of connecting rods, there is a gap between the mesh cylinder and the conical cylinder one and the conical cylinder two, the conical cylinder one and the conical cylinder two are rotated through a rotating driving mechanism, and a discharging part below the connecting rods is provided with a material guide groove connected with a conveyor. The drum shakeout machine of the application shields the dust generated when the old sand falls off through the conical cylinder one and the conical cylinder two, so that the dust gradually settles back to reduce the air pollution generated in the sand removal process of the casting. The fallen old sand moves along the inclined surface of the inner wall of the conical cylinder one and the conical cylinder two to the opening of the connecting rod and is discharged, so that the old sand is conveniently transported through the conveyor in a concentrated manner. Meanwhile, the old sand and the casting move in two opposite directions, so that the discharging is convenient and two different paths of material receiving devices are installed and arranged.

Description

Technical Field

[0001] This application relates to a technology for removing old sand from castings, and more particularly to a drum sand removal machine. Background Technology

[0002] The drum sand removal machine is the main equipment for removing old sand from castings. Its working principle is to use a rolling screen to drive the casting and sand blocks to impact, rub and vibrate, so that the old sand on the surface of the casting falls off.

[0003] Existing rotary drum sand removers generate significant dust during the removal of old sand particles, which overflow and spread from the top and sides of the drum, polluting the factory's air environment. Current rotary drum sand removers can only be equipped with a dust collection hood above the drum, but the drum's length and area are large, and the limited fan power makes it difficult for the hood to effectively collect dust. Furthermore, the old sand and casting discharge ports of existing rotary drum sand removers are located close to each other in the same direction, making it inconvenient to arrange two receiving devices with different paths in the limited factory space, resulting in an overall structurally inefficient design. Utility Model Content

[0004] This application provides a drum sand removal machine to solve the problems of existing drum sand removal machines easily generating dust and being inconvenient to transport old sand and castings.

[0005] This application provides a drum sand removal machine, including a screen cylinder. The inner wall of the screen cylinder is fixed with spiral blades that push material towards the end. The outer wall of the screen cylinder is fitted with a cone cylinder one and a cone cylinder two that are fixedly connected thereto. The large diameter ends of the cone cylinder one and the cone cylinder two are opposite each other and are connected and fixed by a plurality of annular array connecting rods. There is a gap between the screen cylinder and the cone cylinder one and the cone cylinder two. The cone cylinder one and the cone cylinder two are rotated by a rotary drive mechanism. The discharge part below the connecting rods is provided with a guide chute connected to a conveyor.

[0006] Optionally, the rotary drive mechanism includes a support roller and a drive wheel. Guide rings are respectively sleeved and fixed on the first cone and the second cone. The support roller and the drive wheel support the first cone and the second cone through the guide rings. The drive wheel is fixed to the rotating shaft of the reduction motor and can drive the guide rings to rotate the first cone and the second cone.

[0007] Optionally, a dust cover is fixed above the connecting rod by a column. The arc-shaped dust cover is fitted above and to the side of the connecting rod in the annular array and is connected to the bag filter through a fan.

[0008] Optionally, a rotating shaft passes through the mesh cylinder, and both ends of the rotating shaft are rotatably connected to a fixed frame. A drive motor for rotating the rotating shaft is installed on one of the fixed frames, and a roller brush is fixed on the rotating shaft inside the mesh cylinder.

[0009] The drum sand removal machine provided in this application, by fitting cone one and cone two onto the screen cylinder, prevents the dust generated during the removal of old sand from spreading upwards due to the shielding effect of cone one and cone two. As the dust moves towards the opening at the connecting rod, it gradually settles and falls back down, reducing air pollution generated during the sand removal process of castings. After the removed old sand passes through the screen cylinder, it moves along the inclined surface of the inner wall of cone one and cone two towards the opening at the connecting rod and is discharged, facilitating the collection and transportation of old sand by a conveyor. At the same time, the old sand and the casting move in opposite directions for discharge, which facilitates the installation and arrangement of receiving devices with two different paths. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a front view of a drum sand removal machine provided in an embodiment of this application; Figure 2 A drum sand removal machine provided in one embodiment of this application Figure 1 The left view; Figure 3 A drum sand removal machine provided in one embodiment of this application Figure 1 A sectional view.

[0012] Explanation of reference numerals in the attached figures: 1. Mesh cylinder; 2. Cone cylinder one; 3. Cone cylinder two; 4. Connecting rod; 5. Guide ring; 6. Support roller; 7. Drive wheel; 8. Gear motor; 9. Guide chute; 10. Conveyor; 11. Dust hood; 12. Fan; 13. Rotary shaft; 14. Fixing frame; 15. Drive motor; 16. Roller brush. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0014] like Figures 1-3As shown, one embodiment of this application provides a drum sand removal machine, including a screen cylinder 1. The inner wall of the screen cylinder 1 is fixed with spiral blades that push material towards the end. The outer wall of the screen cylinder 1 is fitted with a cone cylinder 2 and a cone cylinder 3 that are fixedly connected to it. The large diameter ends of the cone cylinder 2 and the cone cylinder 3 are opposite each other. The two ends of the cone cylinder 2 and the cone cylinder 3 have openings that communicate through the screen cylinder 1 and are connected and fixed by a plurality of annular array connecting rods 4. There is a gap between the screen cylinder 1 and the cone cylinder 2 and the cone cylinder 3. The cone cylinder 2 and the cone cylinder 3 are rotated by a rotary drive mechanism. The discharge part below the connecting rods 4 is provided with a guide trough 9 that is connected to a conveyor 10.

[0015] In use, the casting is placed into the mesh cylinder 1 through the opening at one end of cone 2. The rotary drive mechanism drives cone 2 and cone 3 to rotate slowly via guide ring 5, and mesh cylinder 1 rotates synchronously with cone 2 and cone 3. The rotating mesh cylinder 1 causes the casting inside to tumble, and the old sand on the casting is separated through impact, friction and vibration. The detached old sand passes through mesh cylinder 1 and enters the gap between it and cone 2 and cone 3, and slides down the inclined surface of the inner wall of cone 2 and cone 3, and is discharged from the opening at connecting rod 4. The discharged old sand falls through the guide chute 9 onto the conveyor 10 and is sent to the recycling tank. After sand removal, the casting moves through the spiral blades inside mesh cylinder 1 to the end opening of cone 3 for discharge.

[0016] In this embodiment, by fitting cone 2 and cone 3 onto the mesh cylinder 1, the dust generated when the old sand falls off is blocked by cone 2 and cone 3 and does not spread upward. As the dust moves toward the opening at the connecting rod 4, it gradually settles and falls back down, which can reduce air pollution generated during the sand removal process of the casting. After the fallen old sand passes through the mesh cylinder 1, it moves along the inclined surface of the inner wall of cone 2 and cone 3 toward the opening at the connecting rod 4 and is discharged, which facilitates the collection and transportation of the old sand by the conveyor 10. At the same time, the old sand and the casting move in two opposite directions for discharge, which facilitates the installation and arrangement of receiving devices with two different paths.

[0017] In one possible implementation, the rotary drive mechanism includes a support roller 6 and a drive wheel 7. Guide rings 5 ​​are respectively sleeved and fixed on the first cone 2 and the second cone 3. The support roller 6 and the drive wheel 7 support the first cone 2 and the second cone 3 through the guide rings 5. The drive wheel 7 is fixed to the rotating shaft of the reduction motor 8 and can drive the guide rings 5 ​​to rotate the first cone 2 and the second cone 3.

[0018] Multiple support rollers 6 provide axial support to both sides of cone 1 2 and cone 2 3. The geared motor 8 drives the drive wheel 7 to rotate through the rotating shaft. The drive wheel 7 drives cone 1 2 and cone 2 3 to rotate slowly through the friction between it and the guide ring 5.

[0019] In one possible implementation, a dust cover 11 is fixed above the connecting rod 4 by a column. The arc-shaped dust cover 11 is fitted above and to the side of the connecting rod 4 in the annular array and is connected to the bag filter through a fan 12.

[0020] The dust collector hood 11 is installed above and on both sides of the opening at the connecting rod 4. When the old sand falls off, most of the dust generated is blocked by cone 1 2 and cone 2 3 and settles back down and is discharged from below the opening at the connecting rod 4. A small portion of the dust that overflows from above and on both sides of the opening at the connecting rod 4 is drawn into the dust collector hood 11 by the fan 12 and then discharged into the bag filter for filtration.

[0021] In one possible implementation, a rotating shaft 13 passes through the mesh cylinder 1, and the two ends of the rotating shaft 13 are rotatably connected to a fixed frame 14. A drive motor 15 for rotating the rotating shaft 13 is installed on one of the fixed frames 14, and a roller brush 16 is fixed on the rotating shaft 13 inside the mesh cylinder 1.

[0022] The mesh cylinder 1 has fixed frames 14 at both ends along its axial direction, and the rotating shaft 13 is rotatably connected between the two fixed frames 14. The drive motor 15 rotates the rotating shaft 13, which cleans the tumbling castings during the sand removal process via the roller brush 16. The bristles of the rotating roller brush 16 can penetrate into the gaps in the castings to remove old sand, improving the sand removal effect. Furthermore, the bristles of the roller brush 16 act as a buffer when the tumbling castings fall, reducing the impact on the castings during sand removal, thereby reducing the probability of cracks forming during sand removal and improving the yield rate.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A drum sand removal machine, comprising a screen cylinder (1), wherein the inner wall of the screen cylinder (1) is fixed with spiral blades for pushing material towards the end, characterized in that: The outer wall of the mesh cylinder (1) is fitted with a cone cylinder one (2) and a cone cylinder two (3) that are fixedly connected to it. The large diameter ends of the cone cylinder one (2) and the cone cylinder two (3) are opposite each other and are connected and fixed by a plurality of ring array connecting rods (4). There is a gap between the mesh cylinder (1) and the cone cylinder one (2) and the cone cylinder two (3). The cone cylinder one (2) and the cone cylinder two (3) rotate by a rotary drive mechanism. The discharge part below the connecting rod (4) is provided with a guide trough (9) connected to the conveyor (10).

2. The drum sand removal machine according to claim 1, characterized in that: The rotary drive mechanism includes a support roller (6) and a drive wheel (7). Guide rings (5) are respectively fitted and fixed on the first cone (2) and the second cone (3). The support roller (6) and the drive wheel (7) support the first cone (2) and the second cone (3) through the guide rings (5). The drive wheel (7) is fixed to the shaft of the reduction motor (8) and can drive the guide rings (5) to rotate the first cone (2) and the second cone (3).

3. The drum sand removal machine according to claim 1, characterized in that: A dust collector hood (11) is fixed above the connecting rod (4) by a column. The arc-shaped dust collector hood (11) is fitted on the top and side of the connecting rod (4) in the ring array and is connected to the bag filter through a fan (12).

4. The drum sand removal machine according to any one of claims 1-3, characterized in that: A rotating shaft (13) runs through the inside of the mesh cylinder (1). The two ends of the rotating shaft (13) are rotatably connected to the fixed frame (14). A drive motor (15) for rotating the rotating shaft (13) is installed on one of the fixed frames (14). A roller brush (16) is fixed on the rotating shaft (13) inside the mesh cylinder (1).

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