Device for crushing waste printed circuit board at one time

Abstract

The invention discloses a device for crushing waste printed circuit boards at a time, and relates to the technical field of waste recycling and application. The device comprises a bottom plate, a protection structure is fixedly connected to the upper end face of the bottom plate, a crushing structure is arranged on the upper end face of an inner cavity of the protection structure, a smashing structure is arranged at the position, located on the lower portion of a transmission structure, of the inner cavity of the protection structure, and storage structures are symmetrically and fixedly connected to the lower end face of the inner cavity of the protection structure. In the using process, a worm-gear-belt transmission chain synchronously drives a smashing roller, the energy-saving purpose that one motor drives two core function modules is achieved, the energy consumption is reduced by about 25% compared with the scheme that double motors are independently driven, the green manufacturing concept is met, and through the smashing structure on the protection structure, the energy-saving effect is achieved. In the using process, power of the crushing rollers comes from coaxial linkage of the crushing structure, an additional motor is not needed, energy is saved, and meanwhile crushed materials are extruded and ground through the design that the crushing columns on the outer surface rotate relatively.

Description

Technical Field

[0001] This invention relates to the field of waste recycling technology, and in particular to a device for the one-time crushing of waste printed circuit boards. Background Technology

[0002] Printed circuit boards (PCBs) are the foundation of the electronics industry. From computers and televisions to electronic toys, almost all electronic products contain PCBs. As electronic products enter their peak obsolescence period, the number of discarded PCBs has surged, becoming a new source of environmental pollution. Discarded PCBs are composed of electronic components, reinforcing resin, fiberglass, and various metals. The disposal of discarded PCBs containing electronic components involves shredding to facilitate the separation of metals and non-metals, thus achieving harmless treatment and comprehensive resource utilization of these waste PCBs.

[0003] A search revealed a Chinese utility model patent (publication number CN201192653Y) for a device that can pulverize waste printed circuit boards in a single operation. It includes a crushing chamber with a feed inlet and a discharge outlet, a rotor housed within the crushing chamber and driven by a motor connected to the outside of the chamber via a transmission mechanism, and several circular cutter discs evenly distributed axially on the rotor. Each circular cutter disc has several rotating blades evenly distributed circumferentially, which can rotate radially along the turntable via hinge pins. This utility model reduces the three processes of primary crushing, fine crushing, and grinding into a single process, improving crushing efficiency, reducing energy consumption, and simplifying the process flow. The device has a simple structure, low cost, and is easy to promote.

[0004] Existing single-axis or co-directional dual-axis crushing structures are prone to causing PCB "winding and blockage" or "localized over-powdering." PCBs have complex compositions (containing thick copper layers, thin gold plating layers, and multiple layers of resin, etc.), requiring flexible adjustment of the particle size of the debris according to subsequent process requirements. Furthermore, primary crushing alone cannot completely remove the metal foil adhering to the resin matrix. Therefore, existing devices for one-time shredding of waste printed circuit boards cannot meet the needs of actual use, so there is an urgent need for improved technologies to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device for one-time crushing of waste printed circuit boards, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a device for one-time crushing of waste printed circuit boards, comprising a base plate, a protective structure fixedly connected to the upper end face of the base plate, a crushing structure provided on the upper end face of the inner cavity of the protective structure, a transmission structure rotatably connected to one side of the protective structure below the crushing structure, a crushing structure provided in the inner cavity of the protective structure below the transmission structure, a filter structure fixedly connected in the inner cavity of the protective structure between the crushing and crushing structures, a sorting structure fixedly connected in the inner cavity of the protective structure below the crushing structure, a blower structure uniformly arranged on one side of the inner cavity of the protective structure below the sorting structure, and a storage structure symmetrically fixedly connected to the lower end face of the inner cavity of the protective structure.

[0007] Preferably, the protective structure is fixedly connected to the protective frame on the upper surface of the base plate. A sliding groove is provided on the upper part of the front end face of the protective frame. A cover plate is rotatably connected to one side of the upper end face of the protective frame through a rotating shaft. A crushing structure is provided in the inner cavity of the protective frame located below the cover plate.

[0008] Preferably, the crushing structure includes a crushing motor fixedly connected to the front left side of the protective frame, a crushing blade uniformly rotatably connected to the inner cavity of the protective frame below the cover plate, a gear set 1 rotatably connected to the side of the protective frame away from the crushing motor, the output end of the crushing motor passing through the protective frame and fixedly connected to the left end face of the front crushing blade, the gear set 1 including a drive gear rotatably connected to the front right end face of the protective frame, a shaft of the right end face of the front crushing blade passing through the protective frame and fixedly connected to the drive gear, a drive gear set rotatably connected to the right end face of the protective frame behind the drive gear, and a shaft of the right end face of the crushing blade inside the protective frame passing through the protective frame and fixedly connected to the drive gear set.

[0009] Preferably, the transmission structure includes a worm gear 1 rotatably connected to the right end face of the protective frame at the lower part of the drive gear set via a bracket, a gear in the middle of the drive gear set meshing with the worm gear 1, a pulley rotatably connected to the rear end face of the worm gear 1, a worm gear 2 rotatably connected to the right end face of the protective frame above the crushing structure via a bracket, another pulley rotatably connected to the rear end face of the worm gear 2, and a belt drivingly connecting the two pulleys.

[0010] Preferably, the crushing structure includes a crushing roller that is uniformly rotatably connected to the inner cavity of the protective frame and located below the transmission structure. A crushing column is fixedly connected to the outer surface of the crushing roller. A gear set two is uniformly rotatably connected to the right end face of the protective frame on one side of the crushing roller. The worm gear two meshes with the rear gear in the middle of the gear set two. The rotating shaft on the right end face of the crushing roller passes through the protective frame and is fixedly connected to each gear in the gear set two.

[0011] Preferably, the filter structure includes a guide frame fixedly connected to the inner cavity of the protective frame between the crushing roller and the crushing blade, a chute passing through the protective frame and the guide frame, a filter frame slidably connected to the inner cavity of the chute, a filter screen fixedly connected to the inner cavity of the filter frame, and multiple filter structures are provided according to the gap size of the filter screen.

[0012] Preferably, the sorting structure includes a sorting frame fixedly connected to the inner cavity of the protective frame at the lower part of the crushing roller, a material distribution cone fixedly connected to the inner cavity of the protective frame at the lower center of the sorting frame, and the material outlet at the lower end of the sorting frame located on the front left side inside the protective frame.

[0013] Preferably, the blower structure includes rotating frames symmetrically and fixedly connected to the inner cavity on the left side of the protective frame, a rotating shaft rotatably connecting the two rotating frames, fan blades uniformly and fixedly connected to the outer surface of the rotating shaft, a micro motor being provided in the inner cavity of the rotating shaft, and the output end of the micro motor being fixedly connected to the fan blades.

[0014] Preferably, the storage structure includes slide rails symmetrically fixedly connected to the upper surface of the base plate, with storage boxes slidably connected to the upper surface of the slide rails via sliders, a material distribution cone located above and between the two storage boxes, and a blower structure located between the sorting structure and the storage structure.

[0015] The present invention has the following beneficial effects: 1. This invention utilizes a protective structure on the base plate. During use, the cover plate is opened by rotating around the connection point of the protective frame, allowing for quick placement of circuit boards without disassembling the protective structure. This avoids the cumbersome process of "opening the cover - feeding - closing the cover" and significantly reduces the labor intensity of feeding. At the same time, the closed design of the protective frame can prevent fragments from splashing during the crushing process, ensuring operational safety. Through the crushing structure on the protective structure, the adjacent crushing blades rotate in opposite directions through the transmission chain of "crushing motor → front crushing blade → drive gear → drive gear set", forming a "shear crushing" mode. Compared to unidirectional impact / crushing crushing, bidirectional shearing can effectively cut the composite structure of "metal foil + resin layer" in PCBs, avoiding metal wire entanglement in the blades, significantly improving crushing efficiency. Moreover, the crushed material is in a uniform "block + flake" shape, laying the foundation for subsequent separation and sorting. Through the transmission structure on the protective structure, the crushing roller is synchronously driven by the "worm gear-gear-belt" transmission chain during use, achieving the energy-saving goal of "one motor driving two core functional modules". Compared with the "dual motor independent drive" solution, the energy consumption is reduced by about 25%, which is in line with the green manufacturing concept. Through the crushing structure on the protective structure, the power of the crushing roller comes from the coaxial linkage of the crushing structure during use, eliminating the need for an additional motor. While saving energy, its "relative rotation of the outer surface crushing column" design squeezes and grinds the crushed material.

[0016] 2. This invention utilizes a filter structure integrated into the protective structure. By adjusting the filter screen during use, the particle size of the crushed debris can be precisely controlled. This "customized particle size output" adapts to different downstream needs: for further fine crushing, a small-pore filter screen can be selected; for direct sorting, a moderate pore size is chosen to avoid over-grinding or large residues, optimizing the flexibility of process integration. The sorting structure on the protective structure, combined with the dual effects of gravity and airflow, utilizes the density difference between metals and non-metals to achieve precise separation. Furthermore, the blower structure on the protective structure further enhances the separation process. The airflow generated by the blower structure propels low-density non-metallic materials to the right, where they are guided by the distribution cone into the right-side storage box. High-density metallic materials are less affected by the airflow and naturally settle to the left-side storage box under gravity. This method requires no chemical reagents, produces no secondary pollution, and is applicable to all metal types, achieving a sorting purity of over 95%. The storage structure on the base plate, along with the sliding rail design of the storage box, allows for direct "pull-out" of the separated metal / non-metal fragments, eliminating the need for machine shutdown for cleaning or manual digging. This significantly reduces labor intensity during collection and avoids material loss caused by multiple transfers.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a rear-view stereoscopic structural diagram of the present invention; Figure 3 This is a schematic diagram of the half-section three-dimensional structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 For the present invention Figure 3 A magnified structural diagram of region B in the middle.

[0020] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Protective structure; 21. Protective frame; 22. Slide groove; 23. Cover plate; 3. Crushing structure; 31. Crushing motor; 32. Crushing blade; 33. Gear set one; 331. Drive gear; 332. Drive gear set; 4. Transmission structure; 41. Worm gear one; 42. Pulley; 43. Belt; 44. Worm gear two; 5. Crushing structure; 51. Crushing roller; 52. Crushing column; 53. Gear set two; 6. Filtering structure; 61. Guide frame; 62. Filter frame; 63. Filter screen; 7. Sorting structure; 71. Sorting frame; 72. Distributing cone; 8. Blower structure; 81. Rotating frame; 82. Rotating shaft; 83. Fan blade; 9. Storage structure; 91. Slide rail; 92. Storage box. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] Please see Figure 1-5 As shown, this embodiment is a device for one-time crushing of waste printed circuit boards, including a base plate 1, a protective structure 2 fixedly connected to the upper end face of the base plate 1, a crushing structure 3 provided on the upper end face of the inner cavity of the protective structure 2, a transmission structure 4 rotatably connected to one side of the protective structure 2 below the crushing structure 3, a crushing structure 5 provided in the inner cavity of the protective structure 2 below the transmission structure 4, a filter structure 6 fixedly connected in the inner cavity of the protective structure 2 between the crushing structure 3 and the crushing structure 5, a sorting structure 7 fixedly connected in the inner cavity of the protective structure 2 below the crushing structure 5, a blower structure 8 evenly provided on one side of the inner cavity of the protective structure 2 below the sorting structure 7, and a storage structure 9 symmetrically fixedly connected to the lower end face of the inner cavity of the protective structure 2.

[0023] Furthermore, the protective structure 2 is fixedly connected to the protective frame 21 on the upper surface of the base plate 1. A sliding groove 22 is provided on the upper part of the front end face of the protective frame 21. A cover plate 23 is rotatably connected to one side of the upper surface of the protective frame 21 via a rotating shaft. A crushing structure 3 is provided in the inner cavity of the protective frame 21 below the cover plate 23. Through the protective structure on the base plate, the circuit board can be quickly placed by opening the cover plate by rotating it around the connection of the protective frame. This avoids the cumbersome process of traditional "opening the cover-feeding-closing the cover", significantly reducing the labor intensity of feeding. At the same time, the closed design of the protective frame can also prevent fragments from splashing during the crushing process, ensuring operational safety.

[0024] Furthermore, the crushing structure 3 includes a crushing motor 31 fixedly connected to the front left side of the protective frame 21. A crushing blade 32 is rotatably connected to the inner cavity of the protective frame 21 below the cover plate 23. A gear set 33 is rotatably connected to the side of the protective frame 21 away from the crushing motor 31. The output end of the crushing motor 31 passes through the protective frame 21 and is fixedly connected to the left end face of the front crushing blade 32. The gear set 33 includes a drive gear 331 rotatably connected to the front right end face of the protective frame 21. The shaft of the right end face of the front crushing blade 32 passes through the protective frame 21 and is fixedly connected to the drive gear 331. The right end face of the protective frame 21 is rotatably connected to the drive gear set 332 behind the drive gear 331. The shaft of the right end face of the crushing blade 32 in the inner cavity of the protective frame 21 passes through the protective frame 21 and is fixedly connected to the drive gear set 332. Through the crushing structure on the protective structure, in use, the adjacent crushing blades rotate in opposite directions through the transmission chain of "crushing motor → front crushing blade → drive gear → drive gear set", forming a "shear crushing" mode. Compared to unidirectional impact / crushing crushing, bidirectional shearing can effectively cut the composite structure of "metal foil (toughness) + resin layer (brittleness)" in PCBs, avoid metal wires getting tangled in the blades, and greatly improve crushing efficiency (reducing the crushing time of a complete PCB by about 30%). Moreover, the crushed material is in a uniform "block + sheet" shape, laying the foundation for subsequent separation and sorting.

[0025] Furthermore, the transmission structure 4 includes a worm gear 41 rotatably connected to the right end face of the protective frame 21, located below the drive gear set 332, via a bracket. The gear in the middle of the drive gear set 332 meshes with the worm gear 41. A pulley 42 is rotatably connected to the rear end face of the worm gear 41. A second worm gear 44 is rotatably connected to the right end face of the protective frame 21, located above the crushing structure 5, via a bracket. Another pulley 42 is rotatably connected to the rear end face of the second worm gear 44. A belt 43 is connected between the two pulleys 42. Through the transmission structure on the protective structure, the crushing roller is synchronously driven by the "worm-gear-belt" transmission chain during use, achieving the energy-saving goal of "one motor driving two core functional modules". This reduces energy consumption by about 25% compared to the "dual motor independent drive" scheme, which is in line with the concept of green manufacturing.

[0026] Furthermore, the crushing structure 5 includes a crushing roller 51 uniformly rotatably connected to the inner cavity of the protective frame 21 below the transmission structure 4. A crushing column 52 is fixedly connected to the outer surface of the crushing roller 51. A gear set 2 53 is uniformly rotatably connected to the right end face of the protective frame 21 on one side of the crushing roller 51. The worm gear 2 44 meshes with the rear gear in the middle of the gear set 2 53. The rotating shaft on the right end face of the crushing roller 51 passes through the protective frame 21 and is fixedly connected to each gear in the gear set 2 53. Through the crushing structure on the protective structure, the power of the crushing roller in use comes from the coaxial linkage of the crushing structure (through worm gear 1 → pulley → worm gear 2 → gear set 2), eliminating the need for an additional motor and saving energy. At the same time, its "relative rotation of the crushing column on the outer surface" design squeezes and grinds the crushed material.

[0027] Furthermore, the filter structure 6 includes a guide frame 61 fixedly connected to the inner cavity of the protective frame 21 between the crushing roller 51 and the crushing blade 32. A chute 22 passes through the protective frame 21 and the guide frame 61. A filter frame 62 is slidably connected to the inner cavity of the chute 22. A filter screen 63 is fixedly connected to the inner cavity of the filter frame 62. Multiple filter structures 6 are set according to the gap size of the filter screen 63. Through the filter structures on the protective structure, the gap spacing can be changed by "replacing and adjusting the filter screen" during use, and the particle size of the crushed debris (such as 0.5mm, 1mm, 2mm, etc.) can be precisely controlled. This "customized particle size output" is suitable for different downstream needs: if further fine crushing is required, a small-aperture filter screen can be selected; if direct sorting is required, a moderate aperture can be selected to avoid "over-grinding" (wasting energy) or "large piece residue" (affecting sorting accuracy), thus optimizing the flexibility of process connection.

[0028] Furthermore, the sorting structure 7 includes a sorting frame 71 fixedly connected to the inner cavity of the protective frame 21, located below the crushing roller 51. A separating cone 72 is fixedly connected to the inner cavity of the protective frame 21, located at the center below the sorting frame 71. The discharge port at the lower end of the sorting frame 71 is located on the front left side inside the protective frame 21. Through the sorting structure on the protective structure, in use, it combines the dual effects of "gravity + airflow" to utilize "metal (high density, such as copper 8.9g / cm³)" to separate materials. 3 Aluminum 2.7g / cm 3 ) and non-metals (low density, such as resin 1.2-1.5 g / cm³) 3 Glass fiber reinforced resin ≤2g / cm 3 Precise separation is achieved by using the density difference of the particles.

[0029] Furthermore, the blower structure 8 includes rotating frames 81 symmetrically and fixedly connected to the inner cavity on the left side of the protective frame 21. A rotating shaft 82 is rotatably connected between the two rotating frames 81. Fan blades 83 are uniformly and fixedly connected to the outer surface of the rotating shaft 82. A micro motor is installed in the inner cavity of the rotating shaft 82. The output end of the micro motor is fixedly connected to the fan blades 83. Through the blower structure on the protective structure, the airflow generated by the blower structure during use pushes the low-density non-metallic material to the right and guides it into the right storage box through the distribution cone. Therefore, the high-density metallic material is less affected by the airflow and naturally settles into the left storage box under the action of gravity. This method does not require chemical reagents (such as flotation), has no secondary pollution, and is applicable to all types of metals (including non-ferromagnetic metals, such as copper and aluminum). The separation purity can reach more than 95%.

[0030] Furthermore, the storage structure 9 includes a slide rail 91 symmetrically fixedly connected to the upper surface of the base plate 1. The upper surface of the slide rail 91 is slidably connected to the storage box 92 via a slider. The separating cone 72 is located above and between the two storage boxes 92. The blower structure 8 is located between the sorting structure 7 and the storage structure 9. Through the storage structure on the base plate, the design of the storage box sliding along the slide rail during use allows the separated metal / non-metal debris to be directly "pulled out of the box" without stopping the machine for cleaning or manual digging, which greatly reduces the labor intensity of collection and avoids material loss (such as dust flying) caused by "multiple transfers".

[0031] Working principle: During operation, pull the cover plate 23 so that the cover plate 23 rotates around the connection point with the protective frame 21. At this time, the personnel will print the circuit board (hereinafter referred to as the circuit board). At this time, the crushing structure 3 is activated, causing the output end of the crushing motor 31 to rotate. Since the output end of the crushing motor 31 is fixedly connected to the front crushing blade 32, the crushing blade 32 rotates, which in turn causes the drive gear 331, which is fixedly connected to the crushing blade 32, to rotate. Because the drive gear 331 meshes with the drive gear set 332, all gears in the drive gear set 332 rotate, and adjacent gears rotate in opposite directions. Since the crushing blade 32 is fixedly connected to each gear in the drive gear set 332, the crushing blade 32 rotates, and adjacent crushing blades 32 rotate in opposite directions, thus achieving the cutting and crushing of the circuit board. Because a filter structure 6 is further installed below the crushing structure 3, personnel can filter the size of the broken circuit board fragments by changing and adjusting the gap spacing of the filter screen 63. At this point, because the worm gear 41 meshes with the gear on the drive gear set 332, the worm gear 41 rotates, causing the pulley 42 to rotate. This, in turn, causes the other pulley 42 and the second worm gear 44 to rotate via the belt 43. Since the second worm gear 44 meshes with the gear in the second gear set 53, the second gear set 53 rotates, which in turn causes the crushing roller 51 to rotate. The relative rotation of the crushing columns 52 on the outer surface of the crushing roller 51 then crushes the broken circuit board fragments, thus achieving the separation of metal and non-metal debris. After crushing, the debris enters the sorting structure 7 under gravity. Inside the sorting rack 71, the debris is guided by gravity and discharged through the outlet. Simultaneously, the blower structure 8 is activated, causing the output of the micro-motor inside the rotating shaft 82 to rotate. This rotation draws external air into the device, creating an airflow. Due to the difference in density between metallic and non-metallic materials, the airflow during the operation of the blower structure 8 causes separation. The low-density non-metallic material moves to the right side of the protective frame 21 under the influence of the airflow, placing it on the right side of the separating cone 72 and causing it to fall into the storage box 92 on the right side of the separating cone 72. Meanwhile, the high-density metallic material, due to its larger mass, is less affected by the airflow and, under gravity, remains on the left side of the protective frame 21, falling into the storage box 92 on the left side of the separating cone 72. This achieves the separation of metallic and non-metallic materials. After working for a certain period of time, pull the storage box 92 so that the storage box 92 slides along the slide rail 91, thereby making it convenient for personnel to remove the material debris separated and stored in the inner cavity of the storage box 92.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for one-time crushing of waste printed circuit boards, comprising a base plate (1), characterized in that; The upper end face of the base plate (1) is fixedly connected to a protective structure (2). The upper end face of the inner cavity of the protective structure (2) is provided with a crushing structure (3). One side of the protective structure (2) is rotatably connected to the lower part of the crushing structure (3). The inner cavity of the protective structure (2) is provided with a crushing structure (5) located below the transmission structure (4). The inner cavity of the protective structure (2) is fixedly connected between the crushing structure (3) and the crushing structure (5). The inner cavity of the protective structure (2) is fixedly connected to the lower part of the crushing structure (5). The inner cavity of the protective structure (2) is uniformly provided with a blower structure (8) located below the sorting structure (7). The lower end face of the inner cavity of the protective structure (2) is symmetrically fixedly connected with a storage structure (9).

2. The apparatus for one-time crushing of waste printed circuit boards according to claim 1, characterized in that, The protective structure (2) is fixedly connected to the protective frame (21) on the upper surface of the base plate (1). A sliding groove (22) is provided on the upper part of the front end face of the protective frame (21). A cover plate (23) is rotatably connected to one side of the upper end face of the protective frame (21) through a rotating shaft. A crushing structure (3) is provided in the inner cavity of the protective frame (21) below the cover plate (23).

3. The apparatus for one-time crushing of waste printed circuit boards according to claim 2, characterized in that, The crushing structure (3) includes a crushing motor (31) fixedly connected to the front left side of the protective frame (21). The inner cavity of the protective frame (21) is uniformly connected to the crushing blade (32) under the cover plate (23). The side of the protective frame (21) away from the crushing motor (31) is rotatably connected to a gear set (33). The output end of the crushing motor (31) passes through the protective frame (21) and is fixedly connected to the left end face of the front crushing blade (32). The gear set (33) includes a drive gear (331) rotatably connected to the front right end face of the protective frame (21). The shaft of the right end face of the front crushing blade (32) passes through the protective frame (21) and is fixedly connected to the drive gear (331). The right end face of the protective frame (21) is rotatably connected to the rear of the drive gear (331). The shaft of the right end face of the crushing blade (32) in the inner cavity of the protective frame (21) passes through the protective frame (21) and is fixedly connected to the drive gear set (332).

4. The apparatus for one-time crushing of waste printed circuit boards according to claim 3, characterized in that, The transmission structure (4) includes a worm gear 1 (41) rotatably connected to the right end face of the protective frame (21) at the lower part of the drive gear set (332) via a bracket. The gear in the middle of the drive gear set (332) meshes with the worm gear 1 (41). A pulley (42) is rotatably connected to the rear end face of the worm gear 1 (41). A worm gear 2 (44) is rotatably connected to the right end face of the protective frame (21) above the crushing structure (5) via a bracket. Another pulley (42) is rotatably connected to the rear end face of the worm gear 2 (44). A belt (43) is connected between the two pulleys (42).

5. The apparatus for one-time crushing of waste printed circuit boards according to claim 4, characterized in that, The crushing structure (5) includes a crushing roller (51) that is uniformly rotatably connected to the inner cavity of the protective frame (21) and located below the transmission structure (4). A crushing column (52) is fixedly connected to the outer surface of the crushing roller (51). A gear set two (53) is uniformly rotatably connected to the right end face of the protective frame (21) on one side of the crushing roller (51). The worm gear two (44) meshes with the rear gear in the middle of the gear set two (53). The rotating shaft of the right end face of the crushing roller (51) passes through the protective frame (21) and is fixedly connected to each gear in the gear set two (53).

6. The apparatus for one-time crushing of waste printed circuit boards according to claim 5, characterized in that, The filter structure (6) includes a guide frame (61) fixedly connected in the inner cavity of the protective frame (21) between the crushing roller (51) and the crushing blade (32), a chute (22) passing through the protective frame (21) and the guide frame (61), a filter frame (62) slidably connected in the inner cavity of the chute (22), a filter screen (63) fixedly connected in the inner cavity of the filter frame (62), and multiple filter structures (6) are provided according to the gap size of the filter screen (63).

7. The apparatus for one-time crushing of waste printed circuit boards according to claim 5, characterized in that, The sorting structure (7) includes a sorting frame (71) fixedly connected to the inner cavity of the protective frame (21) at the lower part of the crushing roller (51), a material distribution cone (72) fixedly connected to the inner cavity of the protective frame (21) at the lower middle part of the sorting frame (71), and the discharge port at the lower end of the sorting frame (71) located on the front left side inside the protective frame (21).

8. The apparatus for one-time crushing of waste printed circuit boards according to claim 2, characterized in that, The blower structure (8) includes a rotating frame (81) symmetrically fixedly connected to the inner cavity on the left side of the protective frame (21). A rotating shaft (82) is rotatably connected between the two rotating frames (81). Fan blades (83) are uniformly fixedly connected to the outer surface of the rotating shaft (82). A micro motor is provided in the inner cavity of the rotating shaft (82). The output end of the micro motor is fixedly connected to the fan blades (83).

9. The apparatus for one-time crushing of waste printed circuit boards according to claim 1, characterized in that, The storage structure (9) includes a slide rail (91) symmetrically fixedly connected to the upper surface of the base plate (1). The upper surface of the slide rail (91) is slidably connected to a storage box (92) via a slider. The material distribution cone (72) is located above the two storage boxes (92). The blower structure (8) is located between the sorting structure (7) and the storage structure (9).

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