Perforating device

Abstract

The embodiment of the invention provides a punching device, and relates to the technical field of chemical gypsum processing. A punching device comprises a supporting frame, a top platform is fixedly arranged at the upper end of the supporting frame, a pair of guide rails are installed on the top platform, a raw material storage mechanism is installed on the guide rails in a sliding mode, a bottom plate is arranged at the bottom of the supporting frame, stand columns are arranged at the four corners of the bottom plate, and rotary punching mechanisms are installed in the stand columns in a sliding mode. The rotary punching mechanism slides upwards in the stand column and penetrates through the top platform and the raw material storage mechanism to punch the chemical gypsum from bottom to top. Chemical gypsum in the raw material vehicle is punched from bottom to top through the punching rods, it is guaranteed that holes can be completely communicated, particularly it is guaranteed that reactants at the bottom of the raw material vehicle can be in full contact, meanwhile, the multiple punching rods are driven by the synchronous belt mechanism to rotate, the punching rods can more easily penetrate through hard chemical gypsum materials, and the punching efficiency is improved. Punching resistance is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of chemical gypsum processing, and in particular to a punching device. Background Art

[0002] Chemical gypsum, also known as synthetic gypsum, is a general term for a group of industrial byproducts primarily composed of calcium sulfate. It includes various types, such as desulfurized gypsum, phosphogypsum, and fluorinated gypsum. These gypsums are produced in the flue gas desulfurization process of coal-fired power plants, in the wet phosphoric acid production process, and in the production of hydrofluoric acid. Although chemical gypsum shares the same primary component—calcium sulfate—as natural gypsum, it contains numerous impurities, making it difficult to use directly.

[0003] Converting chemical gypsum into anhydrite is an effective, harmless treatment method that can significantly expand its application areas. To this end, the inventors proposed an innovative method based on a "disintegration-catalysis" process, using chemical gypsum as a raw material to produce anhydrite. However, in the process of converting gypsum into anhydrite, how to effectively increase the contact area between the reactants becomes a key technical challenge.

[0004] At present, there is no precedent for the large-scale application of such methods to treat chemical gypsum. At the same time, the existing technology has many shortcomings in treating chemical gypsum, such as the lack of effective means to significantly increase the surface area inside the chemical gypsum to promote its full contact with reaction media such as steam and water hydrothermal liquids, resulting in low treatment efficiency and uneven reaction.

[0005] In order to solve this problem, a punching device is provided, which increases the contact area of the reactants through punching, thereby improving the reaction efficiency and conversion effect. At the same time, an elastic sleeve is provided on the outside of the punching rod, and combined with the design of a scraper and brush sleeve, an automatic cleaning function is realized, ensuring the cleanliness of the equipment inside and the purity of the treatment process. Summary of the Invention

[0006] According to an embodiment of the present application, a punching device includes a support frame, a top platform is fixedly provided at the upper end of the support frame, a pair of guide rails are installed on the top platform, a raw material storage mechanism is slidably installed on the guide rails, a base plate is provided at the bottom of the support frame, and columns are provided at the four corners of the base plate. A rotary punching mechanism is slidably installed in the columns, and the rotary punching mechanism slides upward in the columns, penetrates the top platform and the raw material storage mechanism, and punches chemical gypsum from bottom to top.

[0007] Furthermore, the raw material storage mechanism includes a moving block sliding on a guide rail, a raw material cart is fixedly mounted on the upper end of the moving block, a plurality of through holes are opened at the bottom of the raw material cart, and the four side walls are covered with uniform pores.

[0008] Further, a connecting rod is rotatably installed on the lower side of the moving block. Rollers are fixedly connected to both ends of the connecting rod. The connecting rod is driven by a first motor, and the connecting rod rotates within a long hole formed in the guide rail.

[0009] Further, a magnetic strip is installed inside the guide rail, and a magnetic sensor for sensing the magnetic strip is installed inside the moving block. The magnetic sensor transmits the sensed signal to a controller installed on the raw material vehicle.

[0010] Further, the rotary drilling mechanism includes a lifting plate. Connecting plates are provided at the four corners of the lifting plate. The connecting plates slide within the columns and are connected to the piston ends of hydraulic rods installed at the bottoms of the columns. A plurality of drilling rods are rotatably provided on the lifting plate.

[0011] Further, the plurality of drilling rods are all connected by a synchronous belt mechanism. A first bevel gear is installed at the lower end rotating shaft of the outermost synchronous belt mechanism. A second bevel gear is rotatably provided on one inner wall of the lifting plate. The first bevel gear and the second bevel gear are meshed, and the second bevel gear is driven by a second motor.

[0012] Further, the positions of the drilling rods correspond to the positions of the through holes at the bottom of the raw material vehicle and the through holes on the top platform.

[0013] Further, a cleaning plate is provided at a position near the upper end of the support frame. A plurality of elastic sleeves corresponding to the positions of the drilling rods are installed on the cleaning plate. The lower ends of the elastic sleeves are connected to an internal annular brush sleeve.

[0014] Further, a ring-shaped scraping plate is connected to the lower end of the brush sleeve.

[0015] Further, a purging pipe is installed between the two groups of columns. A plurality of purging nozzles are provided on one side of the purging pipe. The purging pipe is connected to an air compressor through a pipeline.

[0016] 1. The beneficial effects of this application are as follows: By opening through holes in the raw material vehicle and the top platform, the hydraulic rod can push the drilling rods, enabling the drilling rods to drill holes in the chemical gypsum inside the raw material vehicle from bottom to top. Drilling can effectively increase the contact area of the reactants, facilitate the reaction, increase the processing efficiency, and drilling from bottom to top ensures that the holes can be completely penetrated, especially ensuring that the reactants at the bottom of the raw material vehicle can also be fully contacted, further promoting the uniformity and thoroughness of the reaction. At the same time, driven by the synchronous belt mechanism, the plurality of drilling rods rotate, making it easier for the drilling rods to penetrate the hard chemical gypsum material, reducing the drilling resistance, and extending the service life of the equipment.

[0017] 2. The beneficial effects of the present application are as follows: By sleeving an elastic sleeve outside the punching rod, the punching rod is closely fitted with the elastic sleeve, and further, the scraping plate and the brush sleeve are fitted with the punching rod. The scraping plate first scrapes the chemical gypsum adhered to the punching rod, and the brush sleeve cleans the residues not cleaned by the scraping plate. After the lifting plate moves to the bottom plate, the chemical gypsum falling on the lifting plate can be blown by the blowing pipe and the blowing head. This method can not only effectively remove the chemical gypsum debris accumulated inside the equipment, but also prevent these substances from re-mixing into the raw materials, ensuring the cleanliness and purity of the entire processing flow.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic perspective view of the overall structure of a punching device according to an embodiment of the present application; Figure 2 is a schematic side view of the overall structure according to an embodiment of the present application; Figure 3 is a schematic view of structures such as a support frame according to an embodiment of the present application; Figure 4 is a schematic view of the structure of a rotary punching mechanism according to an embodiment of the present application; Figure 5 is a schematic view of structures such as a column according to an embodiment of the present application; Figure 6 is a schematic cross-sectional view of the structure of a lifting plate according to an embodiment of the present application; Figure 7 is a schematic view of the structure of a synchronous belt mechanism according to an embodiment of the present application; Figure 8 is a schematic exploded view of a raw material cart and a guide rail according to an embodiment of the present application; Figure 9 is according to an embodiment of the present application Figure 8 schematic view of the structure at A; Figure 10 is a schematic top view of the structure of a cleaning plate according to an embodiment of the present application; Figure 11 is a schematic cross-sectional view of structures such as an elastic member according to an embodiment of the present application.

[0021] Icons: 1. Support frame; 2. Top platform; 3. Guide rail; 31. Long hole; 32. Magnetic strip; 4. Raw material cart; 41. Controller; 42. Moving block; 43. Connecting rod; 44. Roller; 45. Motor 1; 46. Magnetic sensor; 5. Bottom plate; 51. Column; 52. Hydraulic rod; 53. Connecting plate; 54. Lifting plate; 55. Punching rod; 56. Synchronous belt mechanism; 57. Bevel gear 1; 58. Bevel gear 2; 59. Motor 2; 6. Cleaning plate; 61. Elastic sleeve; 62. Brush sleeve; 63. Scraper; 7. Blowing pipe; 71. Blowing head; 72. Air compressor. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0023] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0024] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0028] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] A punching device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0031] Example 1 like Figures 1 - 9 As shown, a punching device according to an embodiment of the present application includes a support frame 1, a top platform 2 is fixedly provided on the upper end of the support frame 1, a plurality of through holes are opened on the top platform 2, and the positions of the through holes avoid the support frame 1, a pair of guide rails 3 are installed on the top platform 2, and a raw material storage mechanism is slidably installed on the guide rails 3, and the installation position of the guide rails 3 avoids the position of the through holes on the top platform 2 to avoid affecting the punching operation. The raw material storage mechanism is used to store chemical gypsum, and the chemical gypsum is moved to the top platform 2 through the guide rails 3 for punching operation.

[0032] like Figure 8 and Figure 9As shown, the raw material storage mechanism includes a moving block 42 that slides on the guide rail 3. At the upper end of the moving block 42, a raw material cart 4 is fixedly installed. A number of through holes are also provided at the bottom of the raw material cart 4, and the positions of these through holes are precisely corresponding to the positions of the through holes on the top platform 2, so as to facilitate the drilling operation from below. The four side walls of the raw material cart 4 are all metal plates, and the metal plates are covered with uniform pores. This design not only enhances the overall strength of the raw material cart 4, but also allows gases or other media to pass through the pores, promoting the material exchange between the inside of the chemical gypsum and the external environment, and contributing to the improvement of the reaction efficiency in the subsequent treatment process.

[0033] Further, a connecting rod 43 is rotatably installed on the lower side of the moving block 42. Both ends of the connecting rod 43 are respectively fixedly connected with a roller 44. These two rollers 44 are respectively located on both sides of the guide rail 3 and can roll in the specially designed rolling grooves on the guide rail 3 to ensure the smooth movement of the raw material cart 4 on the guide rail 3. The connecting rod 43 is driven to rotate by a first motor 45, and the connecting rod 43 can freely rotate in the long hole 31 provided on the guide rail 3. Therefore, when the first motor 45 drives the connecting rod 43, it will cause the rollers 44 to roll along the rolling grooves, thereby driving the entire raw material cart 4 to automatically move along the guide rail 3. This design not only ensures the smooth movement of the raw material cart 4 on the guide rail 3, but also realizes the accurate positioning and automatic operation of the raw material cart 4 by precisely controlling the first motor 45. In this way, the chemical gypsum can be efficiently and accurately transported to the designated position for drilling operations, and the raw material cart 4 after drilling can also be transported to the next process.

[0034] In order to make the raw material cart 4 stop in a specific area, a magnetic strip 32 is installed inside the guide rail 3, and a magnetic sensor 46 for sensing the magnetic strip 32 is installed inside the moving block 42. The magnetic sensor 46 can detect the magnetic field change generated by the magnetic strip 32 inside the guide rail 3. The controller 41 is installed on the raw material cart 4 and is responsible for receiving the signals from the magnetic sensor 46 and making corresponding control decisions based on these signals. When the raw material cart 4 moves along the guide rail 3, the magnetic sensor 46 continuously monitors the magnetic field change on the magnetic strip 32. Once the magnetic sensor 46 detects the preset magnetic field change, which is the sign of reaching a specific area, it will send this signal to the controller 41. After receiving the signal, the controller 41 will judge whether the raw material cart 4 has reached the predetermined stop position according to the pre-programmed logic. If so, it will issue an instruction to make the raw material cart 4 decelerate and finally stop precisely at the designated position, so that the raw material cart 4 just stops in the drilling area.

[0035] As Figures 3 - 5As shown, a bottom plate 5 is provided at the bottom of the support frame 1, and columns 51 are respectively provided at the four corners of the bottom plate 5. A rotary drilling mechanism is slidably installed inside these columns 51, and the core component of this mechanism is a lifting plate 54. At each of the four corners of the lifting plate 54, there is a connecting plate 53. These connecting plates 53 can slide up and down inside the columns 51 and are connected to the piston ends of hydraulic rods 52 installed at the bottoms of the columns 51. When the hydraulic rods 52 are pushed, the connecting plates 53 drive the lifting plate 54 to move upward. A plurality of drilling rods 55 are rotatably arranged on the lifting plate 54, and the positions of these drilling rods 55 precisely correspond to the through holes at the bottom of the raw material cart 4 and the through holes on the top platform 2. When the lifting plate 54 rises, the drilling rods 55 move upward accordingly and sequentially pass through the through holes on the top platform 2 and the bottom of the raw material cart 4 to perform drilling operations on the chemical gypsum from bottom to top. This drilling method ensures that the holes can be completely penetrated, especially ensuring sufficient contact area of the reactants in the bottom area of the raw material cart 4, thereby improving the uniformity and thoroughness of the reaction. Specifically, through the drive of the hydraulic rods 52, the lifting plate 54 and the drilling rods 55 thereon can smoothly and accurately complete the drilling operation. Since the drilling rods 55 drill from bottom to top, this method not only ensures the penetration of the holes but also is particularly conducive to enhancing the contact effect between the chemical gypsum at the bottom of the raw material cart 4 and the reaction medium, further promoting the efficiency and quality in the subsequent reaction process. This design effectively solves the problems of uneven reaction and low efficiency in traditional methods and provides reliable technical support for the large-scale treatment of chemical gypsum.

[0036] Furthermore, a plurality of drilling rods 55 are interconnected through a synchronous belt mechanism 56 to ensure that all the drilling rods 55 can rotate synchronously. Specifically, a bevel gear one 57 is installed at the lower end rotating shaft of the outermost synchronous belt mechanism 56, and a bevel gear two 58 is rotatably arranged on the inner wall of one side of the lifting plate 54. The bevel gear one 57 and the bevel gear two 58 are meshed with each other. The bevel gear two 58 is driven by a motor two 59. When the motor two 59 is started, the power is transmitted to the synchronous belt mechanism 56 through the bevel gear two 58 and the bevel gear one 57. The design of the synchronous belt mechanism 56 enables the drilling rods 55 to be connected in pairs. Each synchronous belt mechanism 56 includes two synchronous wheels respectively connected to the bottoms of two drilling rods 55, and a synchronous belt is sleeved between the two synchronous wheels. The meshing between the synchronous wheels and the synchronous belt realizes the effective transmission of power, enabling all the drilling rods 55 to rotate simultaneously. The synchronous belt is made of rubber material, which not only ensures good elasticity and wear resistance but also can effectively reduce noise and vibration; while the synchronous wheels are made of aluminum alloy material, which not only has sufficient strength but also can minimize the overall weight of the equipment while ensuring the structural strength.

[0037] In addition, all the synchronous belt mechanisms 56 are located inside the lifting plate 54. This layout not only saves space but also protects the transmission components from the external environment, improving the stability and durability of the equipment. Driven by the second motor 59, the entire synchronous belt system can drive all the punching rods 55 to rotate efficiently and synchronously, thereby significantly improving the punching efficiency, reducing the punching resistance, and extending the service life of the equipment. This design provides strong support for the efficient treatment of chemical gypsum, ensuring the smooth and efficient process flow.

[0038] In summary, the raw material cart 4 is slidably installed on a pair of guide rails 3 fixed to the top platform 2 through the moving blocks 42 at the bottom. The first motor 45 drives the rollers 44 on the connecting rod 43 to roll along the guide rails 3 to achieve automatic movement. The magnetic sensor 46 cooperates with the magnetic strip 32 inside the guide rail 3 to ensure that the raw material cart 4 accurately stops at the punching area. The hydraulic rod 52 pushes the connecting plate 53 to raise the lifting plate 54, driving multiple punching rods 55 to pass through the through holes at the bottom of the top platform 2 and the raw material cart 4, and punching the chemical gypsum from bottom to top to ensure that the holes are penetrated. The punching rods 55 are connected by a synchronous belt mechanism 56 and are driven to rotate by the second motor 59 through bevel gear transmission to improve efficiency.

[0039] Embodiment 2 As Figure 2 and Figure 10 shown, considering that the punching rods 55 will be stained with gypsum debris after punching the chemical gypsum, in order to prevent these debris from mixing into the new chemical gypsum during the next operation, a cleaning plate 6 is provided at a position near the upper end of the support frame 1. A plurality of elastic sleeves 61 corresponding precisely to the positions of the punching rods 55 are installed on the cleaning plate 6. Each elastic sleeve 61 is sleeved on the corresponding punching rod 55, and an internal annular brush sleeve 62 is connected to the lower end thereof. The brush sleeve 62 is also sleeved on the punching rod 55. Through the elastic contraction characteristic of the elastic sleeve 61, it is ensured that the brush sleeve 62 can closely fit the punching rod 55.

[0040] Furthermore, as Figure 11 shown, a circular scraping plate 63 is connected to the lower end of the brush sleeve 62. When the punching rod 55 moves downward from top to bottom, first, the scraping plate 63 initially cleans the gypsum debris attached to the surface of the punching rod 55. Subsequently, the brush sleeve 62 further and meticulously cleans the remaining gypsum debris, thereby ensuring that the surface of the punching rod 55 is clean and residue-free, preparing for the next punching operation. This design not only effectively prevents the cross-contamination of gypsum debris between different operations but also automatically completes the cleaning process mechanically, improving the automation degree and working efficiency of the equipment.

[0041] As Figure 1As shown, the gypsum debris on the drilling rod 55 will fall onto the lifting plate 54 after being cleaned. To effectively remove this gypsum debris, a purging pipe 7 is installed between the two groups of columns 51. The purging pipe 7 is located on the side of the lifting plate 54, and a plurality of evenly distributed purging nozzles 71 are provided on one side of it to ensure that all areas of the lifting plate 54 can be covered, thus achieving comprehensive cleaning. The purging pipe 7 is connected to an air compressor 72 through a pipeline, and the air compressor 72 provides a high-pressure gas source. When the air compressor 72 is started, the high-pressure air flow generated is transmitted through the pipeline to the purging pipe 7 and ejected from each purging nozzle 71, forming a strong high-speed air flow. These high-speed air flows directly act on the surface of the lifting plate 54, effectively blowing the gypsum debris off the lifting plate 54 and preventing it from mixing back into the raw materials.

[0042] In summary, after drilling, when the drilling rod 55 moves downward from top to bottom, the scraper 63 first cleans the gypsum adhered to the drilling rod 55, and then the brush sleeve 62 further cleans the remaining gypsum to ensure the cleanliness of the drilling rod 55. The gypsum on the drilling rod 55 will fall onto the lifting plate 54 after being cleaned. When the lifting plate 54 descends to one side of the purging pipe 7, the high-pressure air flow generated by the air compressor 72 is transmitted through the pipeline to the purging pipe 7 and then ejected from each purging nozzle 71, forming a strong air flow that directly acts on the surface of the lifting plate 54, effectively blowing the gypsum debris off the lifting plate 54 and cleaning the lifting plate 54.

[0043] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A punching device, comprising a support frame (1), characterized in that: A top platform (2) is fixedly provided at the upper end of the support frame (1), a pair of guide rails (3) are installed on the top platform (2), a raw material storage mechanism is slidably installed on the guide rails (3), a bottom plate (5) is provided at the bottom of the support frame (1), four corners of the bottom plate (5) are provided with columns (51), a rotary punching mechanism is slidably installed in the columns (51), and the rotary punching mechanism slides upward in the columns (51), penetrates the top platform (2) and the raw material storage mechanism, and punches the chemical gypsum from bottom to top.

2. The punching device according to claim 1, wherein: The raw material storage mechanism comprises a moving block (42) sliding on a guide rail (3), a raw material cart (4) being fixedly mounted on the upper end of the moving block (42), a plurality of through holes being opened at the bottom of the raw material cart (4), and uniform pores being distributed on the four side walls.

3. The punching device according to claim 2, characterized in that: A connecting rod (43) is rotatably mounted on the lower side of the moving block (42), and rollers (44) are fixedly connected to both ends of the connecting rod (43). The connecting rod (43) is driven by a motor (45), and the connecting rod (43) rotates in a long hole (31) provided in the guide rail (3).

4. The punching device according to claim 3, characterized in that: A magnetic strip (32) is installed on the inner side of the guide rail (3), and a magnetic sensor (46) for sensing the magnetic strip (32) is installed on the inner side of the moving block (42). The magnetic sensor (46) transmits the sensed signal to a controller (41) installed on the raw material vehicle (4).

5. The punching device according to claim 1, wherein: The rotary punching mechanism includes a lifting plate (54), and connecting plates (53) are provided at the four corners of the lifting plate (54). The connecting plates (53) slide in the column (51) and are connected to the piston end of the hydraulic rod (52) installed at the bottom of the column (51). A plurality of punching rods (55) are rotatably provided on the lifting plate (54).

6. The punching device according to claim 5, characterized in that: The plurality of punching rods (55) are connected by a synchronous belt mechanism (56), and a bevel gear 1 (57) is installed at the lower end rotation shaft of the outermost synchronous belt mechanism (56). A bevel gear 2 (58) is rotatably provided on the inner wall of one side of the lifting plate (54). The bevel gear 1 (57) and the bevel gear 2 (58) are engaged, and the bevel gear 2 (58) is driven by the motor 2 (59).

7. The punching device according to claim 6, characterized in that: The position of the punching rod (55) corresponds to the position of the through hole at the bottom of the raw material cart (4) and the through hole on the top platform (2).

8. The punching device according to claim 7, characterized in that: A cleaning plate (6) is provided near the upper end of the support frame (1), and a plurality of elastic sleeves (61) corresponding to the positions of the punching rods (55) are installed on the cleaning plate (6), and the lower end of the elastic sleeve (61) is connected to a built-in annular brush sleeve (62).

9. The punching device according to claim 8, wherein: The lower end of the brush sleeve (62) is connected to an annular scraper (63).

10. The punching device according to claim 1, characterized in that: A purge pipe (7) is installed between the two groups of upright columns (51), and a plurality of purge heads (71) are provided on one side of the purge pipe (7). The purge pipe (7) is connected to an air compressor (72) through a pipeline.

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