Waste iron casting recovery device

Abstract

The waste iron casting recycling device comprises a base, a mounting plate, two driving mechanisms, a clamping mechanism, a first rotary grinding mechanism, an abutting mechanism and a second rotary grinding mechanism, and the two driving mechanisms are arranged on the base; the driving mechanism comprises a threaded column, a first gear, a rotating motor, an extension plate and a driving motor, the driving motor is arranged in the base, the threaded column penetrates through the mounting plate and is in threaded connection with the mounting plate, one end of the threaded column is connected with an output shaft of the driving motor, and the extension plate is arranged at the other end of the threaded column; and the rotating motor is arranged on the extension plate. Therefore, the inner surface and the outer surface of the cast iron pipe can be polished and derusted at the same time, the polishing efficiency is effectively improved, the derusting effect of the inner surface and the outer surface of the cast iron pipe is improved, the treatment period of the cast iron pipe is shortened, and the stability of an iron casting in the subsequent machining, using and recycling processes is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of waste cast iron recycling, and in particular to a waste cast iron recycling device. Background Art

[0002] Cast iron is a widely used metal material, renowned for its excellent castability, wear resistance, shock absorption, and low manufacturing cost. However, with the rapid development of industrialization, a large amount of waste cast iron products have been eliminated due to reaching the end of their service life or technological upgrades. If this waste cast iron is not effectively disposed of, it will not only occupy a large amount of land resources but also cause environmental pollution.

[0003] Scrap cast iron recycling refers to the process of collecting, sorting, processing, and reusing discarded cast iron products. During the recycling process, cast iron parts often contain rust on their surfaces. A common method for rust removal is to place the cast iron parts in a cleaning agent and allow the cleaning agent to soak and remove the rust. However, the degree of rust varies depending on the surface of the cast iron parts, and complete penetration of the cleaning agent takes a considerable amount of time, resulting in ineffective rust removal and reduced recycling efficiency.

[0004] In the related art, the rust on the surface of the cast iron part can also be effectively removed by grinding the rust on the surface. However, for tubular cast iron parts, both the inside and the outside need to be grinded. In addition, in order to maintain the stability of the cast iron part and prevent it from falling off during the grinding process, the cast iron pipe needs to be clamped, resulting in the clamped part being unable to be effectively ground. The clamping position and / or angle needs to be adjusted to continue grinding. After completing the grinding of the surface, it is necessary to switch to another machine to grind the inner surface. This process is repeated, which not only requires a lot of manual labor, but also has low efficiency, which is not conducive to the subsequent recycling of the cast iron parts. Summary of the Invention

[0005] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, one purpose of this application is to propose a waste cast iron recycling device that can simultaneously grind and remove rust on the inner and outer surfaces of cast iron pipes, which not only effectively improves the grinding efficiency, but also improves the rust removal effect on the inner and outer surfaces of cast iron pipes, thereby shortening the processing cycle of cast iron pipes and enhancing the stability of cast iron parts during subsequent processing, use and recycling.

[0007] To achieve the above-mentioned objectives, the first aspect of the present application proposes a waste cast iron recycling device, comprising a base, a mounting plate, two driving mechanisms, a clamping mechanism, a first grinding mechanism, a pressing mechanism, and a second grinding mechanism, wherein the two driving mechanisms are respectively arranged on the base; the driving mechanism comprises a threaded column, a first gear, a rotating motor, an extension plate and a driving motor, wherein the driving motor is arranged in the base, the threaded column passes through the mounting plate and is threadedly connected to the mounting plate, one end of the threaded column is connected to the output shaft of the driving motor, and the extension plate is arranged on the other end of the threaded column; the rotating motor is arranged on the extension plate, and the extension plate and the clamping mechanism are slidably connected on the surface; the first gear is mounted on the output shaft of the rotating motor; the clamping mechanism is mounted on the mounting plate, the clamping mechanism comprises a shell, a second gear and a clamping assembly, wherein the second gear is mounted on the shell, and the two first gears are respectively meshed with the second gear; the clamping assembly is mounted on the second gear; the first grinding mechanism is mounted on the clamping mechanism; the pressing mechanism is mounted on the base, and the second grinding mechanism is arranged on the pressing mechanism.

[0008] The waste cast iron parts recycling device of the embodiment of the present application can simultaneously grind and remove rust on the inner and outer surfaces of the cast iron pipe, which not only effectively improves the grinding efficiency, but also improves the rust removal effect on the inner and outer surfaces of the cast iron pipe, thereby shortening the processing cycle of the cast iron pipe and enhancing the stability of the cast iron parts during subsequent processing, use and recycling.

[0009] In addition, the waste cast iron recovery device proposed in the present application may also have the following additional technical features:

[0010] Furthermore, the clamping assembly includes an inclined plate, a spring and a rotating shaft, wherein the inclined plate and the second gear are hinged through the rotating shaft; one end of the spring is connected to the inclined plate, and the other end of the spring is connected to the housing.

[0011] Furthermore, the first grinding mechanism includes a first connecting rod, a grinding wheel and a second connecting rod, wherein the first connecting rod is hinged to the inner wall of the inclined plate, and the second connecting rod is hinged to the inner wall of the inclined plate; the grinding wheel is mounted on the first connecting rod.

[0012] Furthermore, the clamping mechanism includes a driving assembly, two support rods and two abutment plates, wherein the support rod is L-shaped; the two support rods are respectively installed on both sides of the driving assembly, and the abutment plates are vertically installed on the support rods; the bottom of the support rod is slidably connected to the base.

[0013] Furthermore, the driving assembly includes a double-headed motor, two threaded rods and two connecting blocks, wherein the two threaded rods are respectively installed on the two output shafts of the double-headed motor; the two connecting blocks are respectively sleeved on the two threaded rods, and the connecting blocks are installed at the bottom of the support rod.

[0014] Furthermore, the second grinding mechanism includes a rotating rod, two telescopic rods, two arc grinding plates and a grinding motor, wherein the grinding motor is installed on the double-headed motor, one end of the rotating rod is connected to the output end of the grinding motor, and the other end of the rotating rod is provided with a connecting block; one end of the two telescopic rods is respectively installed on both sides of the connecting block, and the other end of the telescopic rod is connected to the corresponding arc grinding plate.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: it can simultaneously polish and remove rust from the inner and outer surfaces of the cast iron pipe, which not only effectively improves the polishing efficiency, but also improves the rust removal effect on the inner and outer surfaces of the cast iron pipe, thereby shortening the processing cycle of the cast iron pipe and enhancing the stability of the cast iron parts during subsequent processing, use and recycling.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the waste cast iron recycling device of this application;

[0019] Figure 2 A schematic diagram of a grinding state of the waste cast iron recycling device of the present application;

[0020] Figure 3 A schematic diagram of another grinding state of the waste cast iron recycling device of the present application;

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 6 This is a structural schematic diagram of the second grinding mechanism of the waste cast iron recovery device of this application.

[0024] As shown in the figure: 1. Base; 2. Mounting plate; 3. Driving mechanism; 31. Threaded column; 32. First gear; 33. Rotating motor; 34. Extension plate; 35. Driving motor; 4. Clamping mechanism; 41. Housing; 42. Second gear; 43. Clamping assembly; 431. Inclined plate; 432. Spring; 433. Rotating shaft; 5. First grinding mechanism; 51. First connecting rod; 52. Grinding wheel; 53. Second connecting rod; 6. Clamping mechanism; 61. Driving assembly; 611. Double-headed motor; 612. Threaded rod; 613. Connecting block; 62. Support rod; 63. Abutment plate; 7. Second grinding mechanism; 71. Rotating rod; 72. Telescopic rod; 73. Arc grinding plate; 74. Grinding motor; 8. Cast iron pipe. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0026] The following describes the waste cast iron recovery device according to an embodiment of the present application with reference to the accompanying drawings.

[0027] like Figures 1-6 As shown, the waste cast iron recycling device of the embodiment of the present application may include a base 1, a mounting plate 2, two driving mechanisms 3, a clamping mechanism 4, a first grinding mechanism 5, a tightening mechanism 6, and a second grinding mechanism 7.

[0028] The two driving mechanisms 3 are respectively provided on the base 1 . It should be noted that the two driving mechanisms 3 are used to drive the clamping mechanism 4 to rotate. The two driving mechanisms 3 are respectively located on both sides of the clamping mechanism 4 .

[0029] The driving mechanism 3 may include a threaded column 31 , a first gear 32 , a rotation motor 33 , an extension plate 34 and a driving motor 35 .

[0030] The drive motor 35 is disposed within the base 1, and the threaded post 31 extends through the mounting plate 2 and is threadedly connected thereto. One end of the threaded post 31 is connected to the output shaft of the drive motor 35, and an extension plate 34 is disposed on the other end of the threaded post 31. It should be noted that a bearing is provided at the connection between the extension plate 34 and the threaded post 31. When the threaded post 31 rotates, the bearing ensures that the extension plate 34 is not affected by the rotation of the threaded post 31, while also ensuring the normal rotation of the threaded post 31. It should be noted that the mounting plate 2 described in this embodiment has a through hole with threads disposed therein, and the threaded post 31 passes through the through hole on the surface of the mounting plate 2 and is threadedly connected thereto.

[0031] The rotating motor 33 is arranged on the extension plate 34 , and the extension plate 34 and the clamping mechanism 4 are connected to each other in a sliding manner.

[0032] Furthermore, the shapes of the extension plate 34 and the surface of the clamping structure fit together, thereby facilitating the extension plate 34 to fit the surface of the clamping mechanism 4 and move.

[0033] The first gear 32 is mounted on the output shaft of the rotary motor 33 .

[0034] The rotating motor 33 is connected to the first gear 32 , and can adjust the rotation speed of the first gear 32 , thereby adjusting the grinding speed of the cast iron pipe 8 .

[0035] The clamping mechanism 4 is mounted on the mounting plate 2 , and the clamping mechanism 4 may include a housing 41 , a second gear 42 and a clamping assembly 43 .

[0036] The second gear 42 is mounted on the housing 41, and the two first gears 32 mesh with the second gears 42. It should be noted that the width of the second gear 42 is greater than that of the first gear 32. The connection between the housing 41 and the second gear 42 is located at the top of the housing 41, with the rest located at the bottom. A rotating bearing is installed between the top and bottom of the housing 41.

[0037] Specifically, when the two drive motors 35 synchronously drive their corresponding threaded columns 31 to rotate forward and backward, due to the threaded connection between the threaded columns 31 and the mounting plate 2, the two ends of the mounting plate 2 will move upward or downward at the same time. Specifically, when the drive motor 35 rotates clockwise, the two threaded columns 31 will simultaneously drive the mounting plate 2 upward, and when the drive motor 35 rotates counterclockwise, the two threaded columns 31 will simultaneously drive the mounting plate 2 downward. At the same time, the clamping mechanism 4 installed on the mounting plate 2 will also move. Since the second gear 42 is longer, the up and down movement will not change the meshing relationship between the first gear 32 and the second gear 42. In this way, the clamping mechanism 4 can be polished up and down on the surface of the cast iron pipe 8.

[0038] The clamping assembly 43 is mounted on the second gear 42 .

[0039] It can be understood that the plurality of clamping assemblies 43 are internally aggregated to abut against the surface of the cast iron pipe 8 so as to better clamp the surface of the cast iron pipe 8 .

[0040] The first grinding mechanism 5 is mounted on the clamping mechanism 4 , the pressing mechanism 6 is mounted on the base 1 , and the second grinding mechanism 7 is arranged on the pressing mechanism 6 .

[0041] In the examples of this application, see Figure 2 and Figure 3When the cast iron pipe 8 is in a clamped state, the second grinding mechanism 7 located inside the cast iron pipe 8 can simultaneously grind and remove rust from the interior of the cast iron pipe 8 .

[0042] It should be noted that the clamping mechanism 6 described in this embodiment is installed at the bottom of the cast iron pipe 8, and cooperates with the clamping assembly 43 to clamp the top and bottom of the cast iron pipe 8 respectively, so that it is more stable during grinding.

[0043] Specifically, when relevant personnel need to remove rust on the surface of the cast iron pipe 8, they first adaptively adjust the distance between the clamping assembly 43 and the base 1 according to the length of the cast iron pipe 8 to be derusted, and then push aside multiple clamping assemblies 43, pass the cast iron pipe 8 through multiple clamping assemblies 43 and place it inside the rotating drum, and make the bottom of the cast iron pipe 8 pass through the mounting plate 2 and be placed on the tightening mechanism 6, and tighten the bottom of the cast iron pipe 8 through the tightening mechanism 6. After the placement is completed, release the clamping assembly 43 to make the clamping assembly 43 contact with the surface of the cast iron pipe 8 to be derusted.

[0044] Afterwards, the rotating motor 33 is turned on, and the output shaft of the rotating motor 33 drives the first gear 32 to rotate. During the rotation of the first gear 32, the second gear 42 is also driven to rotate. Because the upper and lower portions of the housing 41 are rotatably connected via bearings, the rotation of the first gear 32 only drives the second gear 42 and the upper portion of the housing 41 to rotate. During the rotation of the second gear 42, the clamping assembly 43 and the first grinding mechanism 5 mounted thereon are also driven to rotate. By coordinating the rotation of the first grinding mechanism 5 with the second gear 42, the rust on the surface of the cast iron pipe 8 can be polished. Simultaneously with the polishing of the surface of the cast iron pipe 8, the second grinding mechanism 7 is activated to polish and remove rust from the inner wall of the cast iron pipe 8.

[0045] In this way, the inner and outer surfaces of the cast iron pipe can be polished and derusted at the same time, which not only effectively improves the polishing efficiency, but also improves the rust removal effect on the inner and outer surfaces of the cast iron pipe, thereby shortening the processing cycle of the cast iron pipe and enhancing the stability of the cast iron parts during subsequent processing, use and recycling.

[0046] It should be noted that the distance between the clamping assembly 43 and the base 1 described in this embodiment is Figures 2 to 3 The distance between the two ends can be adjusted to suit various lengths of cast iron pipes 8.

[0047] In one embodiment of the present application, Figure 2 and Figure 3 As shown, the clamping assembly 43 may include a slanted plate 431 , a spring 432 and a rotating shaft 433 .

[0048] The inclined plate 431 and the second gear 42 are hinged via a rotating shaft 433 . One end of a spring 432 is connected to the inclined plate 431 , and the other end of the spring 432 is connected to the housing 41 .

[0049] It can be understood that the provided rotating shaft 433 can ensure that the multiple inclined plates 431 and the surface of the second gear 42 rotate, and the provided spring 432 can tilt the surface of the inclined plate 431 inward, thereby achieving abutment against the cast iron pipe 8.

[0050] Furthermore, in one embodiment of the present application, Figure 4 As shown, the first grinding mechanism 5 may include a first connecting rod 51 , a grinding wheel 52 and a second connecting rod 53 .

[0051] The first connecting rod 51 is hinged to the inner wall of the inclined plate 431 , the second connecting rod 53 is hinged to the inner wall of the inclined plate 431 , and the grinding wheel 52 is mounted on the first connecting rod 51 .

[0052] It should be noted that the first connecting rod 51 described in this embodiment remains vertical during the clamping process of the cast iron pipe 8. To ensure stable support for the first connecting rod 51, the angle between the second connecting rod 53 and the first connecting rod 51 is acute. The inclined plate 431, the second connecting rod 53, and the first connecting rod 51 form a triangular structure, ensuring the stability of the grinding wheel 52.

[0053] Furthermore, the grinding wheel 52 is provided with a chamfer, which can prevent the corners of the grinding wheel 52 from contacting the sides of the inclined plate 431. In addition, a shift block is provided at the top of the inclined plate 431. It should be noted that the shift block can make it easier to shift the inclined plate 431.

[0054] Specifically, when the second gear 42 rotates, the grinding wheels 52 on the multiple first grinding mechanisms 5 also rotate, thereby grinding the surface of the cast iron pipe 8. Since multiple sets of first grinding mechanisms 5 are provided on the inclined plate 431, the grinding efficiency of the surface of the cast iron pipe 8 can be improved, and the recovery speed of the cast iron parts can be accelerated.

[0055] In one embodiment of the present application, Figure 5 As shown, the abutting mechanism 6 may include a driving assembly 61 , two support rods 62 and two abutting plates 63 .

[0056] The support rods 62 are L-shaped and are mounted on either side of the drive assembly 61. The abutment plates 63 are mounted perpendicularly to the support rods 62. The bottoms of the support rods 62 are slidably connected to the base 1. It should be noted that the abutment assembly is in contact with the interior of the cast iron pipe 8 to be polished, supporting and clamping it through the interior of the cast iron pipe 8.

[0057] Furthermore, in one embodiment of the present application, Figure 5 As shown, and reference Figure 2 The driving assembly 61 may include a double-headed motor 611, two threaded rods 612 and two connecting blocks 613.

[0058] The two threaded rods 612 are respectively installed on the two output shafts of the double-headed motor 611 , and the two connecting blocks 613 are respectively sleeved on the two threaded rods 612 , and the connecting blocks 613 are installed at the bottom of the support rod 62 .

[0059] It should be noted that the threaded rod 612 described in this embodiment is connected to the support column after passing through the connecting block 613, and a bearing is provided at the connection between the threaded rod 612 and the support column to support the threaded rod 612.

[0060] In addition, the double-headed motor 611 described in this embodiment can simultaneously drive the threaded rods 612 on both sides to rotate, and the double-headed motor 611 can realize clockwise and counterclockwise rotation. Since the connecting block 613 is sleeved on the threaded rod 612 and is threadedly connected to the threaded rod 612, the relative distance between the two connecting blocks 613 can be adjusted in the process of driving the threaded rod 612 to rotate, and can adapt to cast iron pipes 8 with different sizes of inner diameters.

[0061] In one embodiment of the present application, Figure 6 As shown, the second grinding mechanism 7 may include a rotating rod 71 , two telescopic rods 72 , two arc grinding plates 73 and a grinding motor 74 .

[0062] Among them, the grinding motor 74 is installed on the double-headed motor 611, one end of the rotating rod 71 is connected to the output end of the grinding motor 74, and the other end of the rotating rod 71 is provided with a connecting block. One end of the two telescopic rods 72 is respectively installed on both sides of the connecting block, and the other end of the telescopic rod 72 is connected to the corresponding arc grinding plate 73.

[0063] Furthermore, the telescopic rod 72 can adapt to cast iron pipes 8 with different inner diameters, so that the arc wearing plate 73 is closely attached to the inner wall of the cast iron pipe 8 .

[0064] Specifically, after the relevant personnel have finished grinding the surface of the cast iron pipe 8 in a certain area, if they need to grind other areas of the inner or outer surface of the cast iron pipe 8, they only need to start the double-headed motor 611, so that the double-headed motor 611 drives the two threaded rods 612 to rotate in the opposite direction of the initial rotation, so that the two connecting blocks 613 move away from each other. Then, they move some of the blocks and control the mounting plate 2 to move up and down, or move the cast iron pipe 8 up or down, through the drive motor 35, to adjust the grinding wheel 52 to the position corresponding to the surface of the cast iron pipe 8 to be ground. Then, they start the double-headed motor 611 again, which drives the two abutment plates 63 to move between each other, again abutting and clamping the inner wall of the cast iron pipe 8.

[0065] Then, the rotating motor 33 is started, which drives the first gear 32 to rotate. When the first gear 32 rotates, it meshes with the second gear 42, driving the second gear 42 to rotate as well. This allows the grinding of waste cast iron steel pipes of various inner diameters and lengths to be achieved, accelerating the removal of rust on their surfaces.

[0066] The waste cast iron parts recycling device of the embodiment of the present application is mainly used to grind tubular cast iron parts, such as cast iron pipes. Since cast iron pipes account for a relatively high proportion of cast iron parts and have a wide range of applications, the present device has good applicability. It should be noted that in the specific use process, in view of the diversity of cast iron pipe lengths. When processing longer cast iron pipes, in order to ensure processing efficiency and device adaptability, it is necessary to pre-cut the cast iron pipes appropriately according to the processing capacity of the present device, thereby optimizing the entire recycling process.

[0067] In summary, the waste cast iron parts recycling device of the embodiment of the present application can simultaneously grind and remove rust on the inner and outer surfaces of the cast iron pipe, which not only effectively improves the grinding efficiency, but also improves the rust removal effect on the inner and outer surfaces of the cast iron pipe, thereby shortening the processing cycle of the cast iron pipe and enhancing the stability of the cast iron parts during subsequent processing, use and recycling.

[0068] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A waste cast iron recovery device, characterized in that: It includes a base, a mounting plate, two driving mechanisms, a clamping mechanism, a first grinding mechanism, a pressing mechanism, and a second grinding mechanism, wherein: The two driving mechanisms are respectively arranged on the base; The driving mechanism includes a threaded column, a first gear, a rotating motor, an extension plate and a driving motor, wherein: The drive motor is arranged in the base, the threaded column passes through the mounting plate and is threadedly connected to the mounting plate, one end of the threaded column is connected to the output shaft of the drive motor, and the extension plate is arranged on the other end of the threaded column; The rotating motor is arranged on the extension plate, and the extension plate is slidably connected to the surface of the clamping mechanism; The first gear is mounted on the output shaft of the rotating motor; The clamping mechanism is mounted on the mounting plate, and includes a housing, a second gear and a clamping assembly, wherein: The second gear is mounted on the housing, and the two first gears are respectively engaged with the second gear; The clamping assembly is mounted on the second gear; The first grinding mechanism is installed on the clamping mechanism; The pressing mechanism is installed on the base, and the second grinding mechanism is arranged on the pressing mechanism.

2. The waste cast iron recovery device according to claim 1, characterized in that: The clamping assembly includes a slant plate, a spring and a rotating shaft, wherein: The inclined plate and the second gear are hinged via the rotating shaft; One end of the spring is connected to the inclined plate, and the other end of the spring is connected to the housing.

3. The waste cast iron recovery device according to claim 2, characterized in that: The first grinding mechanism includes a first connecting rod, a grinding wheel and a second connecting rod, wherein: The first connecting rod is hinged to the inner wall of the inclined plate, and the second connecting rod is hinged to the inner wall of the inclined plate; The grinding wheel is mounted on the first connecting rod.

4. The waste cast iron recovery device according to claim 1, characterized in that: The abutting mechanism includes a driving assembly, two support rods and two abutting plates, wherein: The support rod is L-shaped; the two support rods are respectively installed on both sides of the driving assembly, and the abutment plate is vertically installed on the support rod; The bottom of the support rod is slidably connected to the base.

5. The waste cast iron recovery device according to claim 4, characterized in that: The driving assembly includes a double-headed motor, two threaded rods and two connecting blocks, wherein: Two threaded rods are respectively mounted on the two output shafts of the double-headed motor; The two connecting blocks are respectively sleeved on the two threaded rods, and the connecting blocks are installed at the bottom of the support rods.

6. The waste cast iron recovery device according to claim 5, characterized in that: The second grinding mechanism includes a rotating rod, two telescopic rods, two arc grinding plates and a grinding motor, wherein: The grinding motor is mounted on the double-headed motor, one end of the rotating rod is connected to the output end of the grinding motor, and the other end of the rotating rod is provided with a connecting block; One end of the two telescopic rods is respectively installed on both sides of the connecting block, and the other end of the telescopic rods is connected to the corresponding arc grinding plates.

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