Electronic waste double-rotor hammer type fine crushing equipment and method

Abstract

The invention provides electronic waste double-rotor hammer type fine crushing equipment and method.The electronic waste double-rotor hammer type fine crushing equipment comprises a crushing main machine, the crushing main machine comprises a base, and the two sides of the top of the base are hinged to a left upper cover and a right upper cover through upper cover pin shafts correspondingly; a feeding hole is formed in the top of the base and is positioned between the left upper cover and the right upper cover; bearing seats are arranged on the two sides of the base in pairs, crushing rotors are rotationally mounted between the bearing seats, and the two groups of crushing rotors are correspondingly connected with the output ends of the two motors respectively and provide crushing power; an arc-shaped crushing cavity structure used for being matched with the crushing rotor is arranged in the base, and a discharging opening is formed in the position, located below the arc-shaped crushing cavity structure, of the bottom end of the base. The crushing equipment can realize fine separation of copper etching lines and resin on a circuit board in electronic wastes, so that high-efficiency screening of precious metals and resin can be realized subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic waste recycling, and in particular to a double-rotor hammer type fine crushing device and method for electronic waste. Background Art

[0002] The purpose of fine crushing of electronic waste is to separate the copper etched lines on the circuit boards in the electronic waste from the resin. Most of the rare and precious metals in the electronic waste are present in copper particles below 3mm. In order to further separate the precious metals and the resin, they need to be further crushed. Conventional crushing equipment cannot fully separate the copper particles and the resin. In order to obtain more and finer particles, longer crushing time and greater energy consumption are required. In addition, the uniformity of the fine particles is not enough, which is not conducive to subsequent further sorting. Summary of the invention

[0003] The purpose of the present invention is to provide a double-rotor hammer fine crushing equipment and method for electronic waste in view of the above problems. The crushing equipment can achieve fine separation of copper etching lines and resin on circuit boards in electronic waste, so as to facilitate subsequent efficient screening of precious metals and resins.

[0004] In order to realize the above-mentioned technical features, the object of the present invention is achieved as follows: a double-rotor hammer-type fine crushing equipment for electronic waste, comprising a crushing main unit, the crushing main unit comprising a base, and the top two sides of the base are respectively hinged with a left upper cover and a right upper cover through an upper cover pin shaft; a feeding port is provided at the top of the base and in the middle of the left upper cover and the right upper cover; bearing seats are provided in pairs on both sides of the base, and crushing rotors are rotatably installed between the bearing seats, and the two groups of crushing rotors are respectively connected to the output ends of the two motors and provide crushing power; an arc-shaped crushing cavity structure for cooperating with the crushing rotor is provided inside the base, and a discharge port is provided at the bottom end of the base and below the arc-shaped crushing cavity structure.

[0005] Preferably, an upper cover opening mechanism is respectively installed between the left upper cover and the right upper cover and the outer wall of the base, and the upper cover opening mechanism includes a cylinder, a cylinder body of the cylinder is hinged to the outer wall of the base through a cylinder body hinge seat, and the end of the piston rod of the cylinder is hinged to the piston rod hinge seat on the outer wall of the corresponding left upper cover and right upper cover.

[0006] Preferably, a locking device is provided on the other side where the left upper cover and the right upper cover are hinged to the base, and the oil cylinder can be started to open the left upper cover and the right upper cover only after the locking device is opened.

[0007] Preferably, the arc-shaped crushing chamber structure includes grid bars arranged at the inner bottom of the base, and the grid bars are fixed by arc support plates and arc pressure plates on the inner side walls of the base, the left upper cover and the right upper cover.

[0008] Preferably, the grid bars are rectangular parallelepiped structures with square cross-sections, and are arranged in a staggered manner to form an arc structure concentric with the crushing rotor through arc support plates, and the angles of the grid bars are changed by wedge blocks to form gaps and flanges.

[0009] Preferably, when the raw material is crushed to a qualified specification size, it is discharged from the gap formed by the grid bars. When the worn gap becomes larger, the gap that meets the requirements can be regained by simply changing the wedge block angle. The flanges of the grid bars are arranged in an orderly manner on the arc to form a stepped wave structure, which can produce an impact edge during the crushing process.

[0010] Preferably, the crushing rotor comprises a central rotating shaft, both ends of which are rotatably mounted on a bearing seat, and the bearing seat is fixed to the base through bolts and positioning blocks; The central rotating shaft is alternately provided with discs and spacers, the outer disc is positioned and installed on the central rotating shaft by means of a key, a plurality of hammer shafts are inserted in an annular array on the disc, and the hammer heads and sleeves are alternately staggered and installed on the hammer shafts.

[0011] Preferably, the hammer head is a rectangular parallelepiped structure, with a round hole at one end for installation on the hammer shaft.

[0012] Preferably, the feeding port adopts an arc-shaped structure, and the outlet of the feeding port is offset at the position of the left upper cover; the side plate of the left upper cover also adopts an arc-shaped side plate, and the arc-shaped side plate matches the side plate of the feeding port.

[0013] Preferably, the present invention provides a crushing method of electronic waste double-rotor hammer fine crushing equipment, comprising the following steps: Step 1, raw material delivery: After the electronic waste fragments enter the arc-shaped crushing cavity structure formed by the grid bars from the feeding port, the crushing rotor on this side rotates at high speed, on the one hand, further crushing the input raw materials, and on the other hand, ejecting the raw materials into the other arc-shaped crushing cavity structure; Step 2, fine crushing of raw materials: At the same time, the crushing rotor on the other side rotates at high speed in the opposite direction to finely crush the ejected raw materials. At the same time, the high-speed rotation generates airflow to form negative pressure, which continuously sucks the raw materials over, thereby achieving high output; Step 3, re-crushing of large particle size materials: The raw materials that are not discharged from the arc-shaped crushing chamber structure continue to rotate with their respective crushing rotors. When the raw materials on both sides pass through the connecting area of ​​the arc-shaped crushing chamber structures on both sides, they collide with each other due to the different vector directions of the raw materials, thereby improving the crushing efficiency; Step 4, material discharge: When the raw material is crushed to the qualified size, it will be discharged from the gap formed by the grid bars and finally discharged from the discharge port. When the wear gap becomes larger, the wedge angle is changed to regain the required gap. Step 5, maintenance of the crushing rotor: When the crushing rotor needs to be inspected, open the locking device, start the oil cylinder, drive the left upper cover and the right upper cover to open through the oil cylinder, and then inspect the inside.

[0014] The present invention has the following beneficial effects: 1. The crushing equipment of the present invention can realize the fine separation of copper etching lines and resin on circuit boards in electronic waste, so as to facilitate the subsequent efficient screening of precious metals and resins.

[0015] 2. The present invention effectively increases the overall volume of the crushing cavity, improves the processing capacity, and increases the production capacity by using the dual rotors to work simultaneously.

[0016] 3. The present invention adopts dual rotors that rotate in opposite directions at high speed, so that the raw materials collide with each other in the middle connecting space, thereby improving the refinement and separation effect.

[0017] 4. The flanges produced by the staggered arrangement of the grid bars of the present invention form impact edges, which are beneficial to the crushing and separation of raw materials.

[0018] 5. The grid bars of the present invention can quickly adjust the discharge gap by changing the wedge blocks, thereby improving the durability of the grid bars and reducing the cost of use.

[0019] 6. The present invention adopts a rectangular parallelepiped hammer head, the weight of the hammer head is increased, and the breadth of the specifications of the processed raw materials is effectively expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the upper cover of the present invention being opened.

[0023] Figure 3 It is a schematic diagram of the internal structure of the base cover of the present invention.

[0024] Figure 4 It is a schematic cross-sectional view of the crushing rotor of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the crushing rotor of the present invention.

[0026] In the figure: base 1, left upper cover 2 and right upper cover 3, crushing rotor 4, feeding port 5, motor 6, discharge port 7, upper cover pin 8, oil cylinder 9, grid bar 10, arc support plate 11, arc pressure plate 12, central shaft 13, bearing seat 14, disc 15, spacer 16, outer disc 17, key 18, hammer shaft 19, hammer head 20, sleeve 21, wedge 22; Cylinder body hinge seat 902, piston rod 903, piston rod hinge seat 904; Gap 2201, flange 2202. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0028] Embodiment 1: See also Figure 1-5 A double-rotor hammer fine crushing equipment for electronic waste includes a crushing main unit, the crushing main unit includes a base 1, and the top two sides of the base 1 are respectively hinged with a left upper cover 2 and a right upper cover 3 through an upper cover pin 8; a feeding port 5 is arranged at the top of the base 1 and in the middle of the left upper cover 2 and the right upper cover 3; bearing seats 14 are arranged in pairs on both sides of the base 1, and crushing rotors 4 are rotatably installed between the bearing seats 14, and two groups of crushing rotors 4 are respectively connected to the output ends of two motors 6 and provide crushing power; an arc-shaped crushing cavity structure for matching with the crushing rotor 4 is arranged inside the base 1, and a discharge port 7 is arranged at the bottom end of the base 1 and below the arc-shaped crushing cavity structure. By adopting the above-mentioned fine crushing equipment, the copper etching lines on the circuit board in the electronic waste can be finely separated from the resin, so as to facilitate the subsequent efficient screening of precious metals and resins.

[0029] By adopting the above-mentioned hammer-type fine crushing equipment, it is mainly used for fine crushing of electronic waste after rough crushing. After the electronic waste fragments enter the arc-shaped crushing cavity structure on one side formed by the grid bars 10 from the feeding port 5, the crushing rotor 4 on this side rotates at a high speed, on the one hand, further finely crushing the input raw materials, and on the other hand, ejecting the raw materials into the other arc-shaped crushing cavity structure. The crushing rotor 4 in the other arc-shaped crushing cavity structure rotates in opposite directions at high speed, finely crushing the ejected raw materials, and at the same time, the high-speed rotation generates airflow to form negative pressure, which continuously sucks the raw materials over, thereby achieving high-yield output. The raw materials that are not discharged from the arc-shaped crushing cavity structure continue to rotate with their respective crushing rotors. When the raw materials on both sides pass through the connecting area of ​​the arc-shaped crushing cavity structures on both sides, due to the different vector directions of the running raw materials, they collide with each other, which indirectly promotes crushing and improves efficiency.

[0030] Furthermore, an upper cover opening mechanism is installed between the left upper cover 2 and the right upper cover 3 and the outer wall of the base 1, respectively. The upper cover opening mechanism includes an oil cylinder 9, the cylinder body of the oil cylinder 9 is hinged to the outer wall of the base 1 through a cylinder body hinge seat 902, and the end of the piston rod 903 of the oil cylinder 9 is hinged to the piston rod hinge seat 904 on the outer wall of the corresponding left upper cover 2 and right upper cover 3. The upper cover opening mechanism is convenient for opening the left upper cover 2 and the right upper cover 3. It is mainly for the convenience of maintenance of the crushing rotor 4, the grid bar 10, etc. When it is necessary to inspect the inside, the oil cylinder 9 is started, and the left upper cover 2 and the right upper cover 3 are driven to open by the oil cylinder 9, and then the inside is inspected.

[0031] Furthermore, a locking device 23 is provided on the other side where the left upper cover 2 and the right upper cover 3 are hinged to the base 1, and only after the locking device 23 is opened can the oil cylinder 9 be activated to open the left upper cover 2 and the right upper cover 3. The locking device 23 can realize reliable locking and fixing of the left upper cover 2 and the right upper cover 3, thereby ensuring that they will not open automatically during operation, thereby ensuring safety.

[0032] Furthermore, the arc-shaped crushing chamber structure includes grid bars 10 arranged at the bottom of the base 1, and the grid bars 10 are fixed by arc support plates 11 and arc pressure plates 12 on the inner side walls of the base 1, the left upper cover 2 and the right upper cover 3.

[0033] Furthermore, the grid bars 10 adopt a rectangular parallelepiped structure with a square cross section, and are arranged in a staggered manner to form an arc structure concentric with the crushing rotor 4 through the arc support plate 11, and the angle of the grid bars 10 is changed through the wedge block 22 to form a gap 2201 and a flange 2202. When the raw material is crushed to a qualified specification size, it is discharged from the gap 2201 formed by the grid bars 10. When the worn gap becomes larger, the gap that meets the requirements can be regained by simply changing the angle of the wedge block 22. The flanges 2202 of the grid bars 10 are arranged in an orderly manner on the arc and form a stepped wave structure, which can generate an impact edge during the crushing process. This stepped wave structure greatly improves the crushing efficiency.

[0034] Furthermore, the crushing rotor 4 includes a central rotating shaft 13, both ends of which are rotatably mounted on a bearing seat 14, and the bearing seat 14 is fixed to the base 1 by bolts and positioning blocks; the central rotating shaft 13 is alternately provided with a disc 15 and a spacer 16, an outer disc 17 is positioned and mounted on the central rotating shaft 13 by a key 18, a plurality of hammer shafts 19 are inserted in a circular array on the disc 15, and a hammer head 20 and a sleeve 21 are alternately staggered and mounted on the hammer shaft 19. The crushing rotor 4 described above can be used for crushing materials. During operation, the two central rotating shafts 13 are synchronously driven by the motor 6, the disc 15 is driven by the central rotating shaft 13, the hammer shaft 19 is driven by the disc 15, the hammer head 20 is driven to swing by the hammer shaft 19, and the crushing of materials is achieved by the hammer head 20.

[0035] Furthermore, the hammer head 20 is a rectangular parallelepiped structure, and a round hole is provided at one end for installation on the hammer shaft 19. With such an arrangement and installation method, on the one hand, the hammer head 20 can obtain a larger rotating hammering space, so that the hammer head has a higher linear speed; on the other hand, the size of the rectangular parallelepiped structure can be made larger, so that the faster and heavier hammer head 20 is conducive to the crushing of raw materials, and at the same time, it can better adapt to raw materials with greater differences, which is conducive to the continuity of production.

[0036] Furthermore, the feeding port 5 adopts an arc-shaped structure, and the outlet of the feeding port 5 is offset at the position of the left upper cover 2; the side plate of the left upper cover 2 also adopts an arc-shaped side plate 201, and the arc-shaped side plate 201 matches the side plate of the feeding port 5. The arc-shaped structure of the feeding port 5 ensures the smooth opening of the left upper cover 2 on the one hand, and enables the raw materials to quickly enter the crushing chamber along the air flow channel formed by the high-speed rotation of the crushing rotor 4 on the other hand, effectively preventing the flying materials caused by the poor air flow.

[0037] Embodiment 2: The present invention provides a crushing method of electronic waste double-rotor hammer fine crushing equipment, comprising the following steps: Step 1, raw material delivery: After the electronic waste fragments enter the arc-shaped crushing cavity structure formed by the grid bars 10 from the feeding port 5, the crushing rotor 4 on this side rotates at a high speed, on the one hand, further crushing the input raw materials, and on the other hand, ejecting the raw materials into another arc-shaped crushing cavity structure; Step 2, fine crushing of raw materials: At the same time, the crushing rotor 4 on the other side rotates in the opposite direction at high speed to finely crush the ejected raw materials. At the same time, the high-speed rotation generates airflow to form negative pressure, which continuously sucks the raw materials over, thereby achieving a large output; Step 3, re-crushing of large particle size materials: The raw materials that have not been discharged from the arc-shaped crushing cavity structure continue to rotate with their respective crushing rotors 4. When the raw materials on both sides pass through the connecting area of ​​the arc-shaped crushing cavity structures on both sides, they collide with each other due to the different vector directions of the raw materials, thereby improving the crushing efficiency. Step 4, material discharge: When the raw material is crushed to the qualified size, it is discharged from the gap formed by the grid bars 10 and finally discharged from the discharge port 7. When the wear gap becomes larger, the angle of the wedge block 22 is changed to regain the required gap. Step 5, maintenance of crushing rotor 4: When the crushing rotor 4 needs to be inspected, the locking device 23 is opened, the oil cylinder 9 is started, and the left upper cover 2 and the right upper cover 3 are opened by the oil cylinder 9, and then the interior is inspected.

Claims

1. A double-rotor hammer fine crushing equipment for electronic waste, characterized in that: The crushing machine comprises a main crushing machine, which comprises a base, and the top two sides of the base are hinged with a left upper cover and a right upper cover through upper cover pin shafts respectively; a feeding port is arranged at the top of the base and in the middle of the left upper cover and the right upper cover; bearing seats are arranged in pairs on both sides of the base, and crushing rotors are rotatably installed between the bearing seats, and the two groups of crushing rotors are respectively connected to the output ends of the two motors and provide crushing power; an arc-shaped crushing cavity structure for cooperating with the crushing rotor is arranged inside the base, and a discharge port is arranged at the bottom end of the base and below the arc-shaped crushing cavity structure.

2. According to claim 1, a double-rotor hammer fine crushing equipment for electronic waste is characterized by: An upper cover opening mechanism is respectively installed between the left upper cover and the right upper cover and the outer wall of the base, and the upper cover opening mechanism includes an oil cylinder, a cylinder body of the oil cylinder is hinged to the outer wall of the base through a cylinder body hinge seat, and the end of the piston rod of the oil cylinder is hinged to the piston rod hinge seat on the outer wall of the corresponding left upper cover and the right upper cover.

3. According to claim 2, a double-rotor hammer fine crushing equipment for electronic waste is characterized in that: The other side where the left upper cover and the right upper cover are hinged to the base is provided with a locking device, and only after the locking device is opened can the oil cylinder be started to open the left upper cover and the right upper cover.

4. According to claim 1, the electronic waste double-rotor hammer fine crushing equipment is characterized by: The arc-shaped crushing chamber structure includes grid bars arranged at the bottom of the base, and the grid bars are fixed by arc supporting plates and arc pressure plates on the inner side walls of the base, the left upper cover and the right upper cover.

5. According to claim 4, a double-rotor hammer type fine crushing equipment for electronic waste is characterized in that: The grid bars adopt a rectangular parallelepiped structure with a square cross section, and are arranged in a staggered manner to form an arc structure concentric with the crushing rotor through arc support plates, and the angles of the grid bars are changed by wedge blocks to form gaps and flanges.

6. The electronic waste double-rotor hammer fine crushing equipment according to claim 5, characterized in that: When the raw material is crushed to the qualified specifications, it is discharged from the gap formed by the grid bars. When the wear gap becomes larger, the gap that meets the requirements can be regained by simply changing the wedge block angle. The flanges of the grid bars are arranged in an orderly manner on the arc to form a stepped wave structure, which can produce impact edges during the crushing process.

7. The electronic waste double-rotor hammer fine crushing equipment according to claim 1, characterized in that: The crushing rotor comprises a central rotating shaft, both ends of which are rotatably mounted on a bearing seat, and the bearing seat is fixed to the base through bolts and positioning blocks; The central rotating shaft is alternately provided with discs and spacers, the outer disc is positioned and installed on the central rotating shaft by means of a key, a plurality of hammer shafts are inserted in an annular array on the disc, and the hammer heads and sleeves are alternately staggered and installed on the hammer shafts.

8. The electronic waste double-rotor hammer fine crushing equipment according to claim 7, characterized in that: The hammer head is a rectangular parallelepiped structure, and a round hole is provided at one end for being installed on the hammer shaft.

9. The electronic waste double-rotor hammer fine crushing equipment according to claim 1, characterized in that: The feeding port adopts an arc structure, and the outlet of the feeding port is offset at the position of the left upper cover; the side plate of the left upper cover also adopts an arc side plate, and the arc side plate matches the side plate of the feeding port.

10. A crushing method for electronic waste double-rotor hammer fine crushing equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, raw material delivery: After the electronic waste fragments enter the arc-shaped crushing cavity structure formed by the grid bars from the feeding port, the crushing rotor on this side rotates at high speed, on the one hand, further crushing the input raw materials, and on the other hand, ejecting the raw materials into the other arc-shaped crushing cavity structure; Step 2, fine crushing of raw materials: At the same time, the crushing rotor on the other side rotates at high speed in the opposite direction to finely crush the ejected raw materials. At the same time, the high-speed rotation generates airflow to form negative pressure, which continuously sucks the raw materials over, thereby achieving high output; Step 3, re-crushing of large particle size materials: The raw materials that are not discharged from the arc-shaped crushing chamber structure continue to rotate with their respective crushing rotors. When the raw materials on both sides pass through the connecting area of ​​the arc-shaped crushing chamber structures on both sides, they collide with each other due to the different vector directions of the raw materials, thereby improving the crushing efficiency; Step 4, material discharge: When the raw material is crushed to the qualified size, it will be discharged from the gap formed by the grid bars and finally discharged from the discharge port. When the wear gap becomes larger, the wedge angle is changed to regain the required gap. Step 5, maintenance of the crushing rotor: When the crushing rotor needs to be inspected, open the locking device, start the oil cylinder, drive the left upper cover and the right upper cover to open through the oil cylinder, and then inspect the inside.

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