Electrostatic separation and dust removal device and process for waste circuit board

Abstract

The invention discloses a waste circuit board electrostatic separation dust removal device and process, and relates to the technical field of waste circuit board recycling, processing and dust removal. The electrostatic separation dust removal device for the waste circuit board comprises a support, a dust collection hopper fixedly connected to the upper portion of the support and a dust collection pipeline communicated to the upper portion of the support, and the dust collection pipeline is provided with a position covering type dust filtering part which is used for automatically and linearly translating to replace a filter element during dust removal of the circuit board. A wetting type dust removal part used for wetting and dissolving dust for further collection is arranged at the position, located below the dust collection hopper, of the support, and sealing cover assemblies are detachably arranged among the rectangular pipe barrel, the first strip-shaped through groove and the second strip-shaped through groove jointly. And during replacement, only the first saturated dust filtering assembly at the air port needs to be dismounted, and the other assemblies automatically move forwards for position complementing under the action of self weight, so that the filter element replacement process is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal in the recycling and processing of waste circuit boards, and in particular to an electrostatic separation and dust removal device and process for waste circuit boards. Background Art

[0002] As an important part of electronic products, circuit boards contain a large amount of valuable metals (such as copper, gold, silver, etc.) and non-metallic materials (such as epoxy resin, glass fiber, etc.). Due to their complex structure and mixed components, scientific means are needed to effectively recycle waste circuit boards. One of the current mainstream recycling and treatment methods is physical separation. Among them, the electrostatic separation link in the recycling process can efficiently distinguish conductor and non-conductor materials. However, a large amount of dust is generated during the crushing, screening, and electrostatic separation of waste circuit boards. These dust particles have a wide particle size distribution, are easy to float, and some are conductive. If not treated in time, it will cause equipment failures (such as short circuits, dust accumulation), increase operation risks, and lead to environmental pollution and violation of emission standards. Therefore, industrial dust removal equipment is usually equipped to effectively collect and treat the dust.

[0003] The filter element in the dust removal equipment needs to be replaced regularly. In existing industrial dust removal devices, a parallel filter element structure is mostly used for filtration. However, since the air flow usually has a direction, the filter elements near the air inlet are more likely to accumulate dust, and their service life is much shorter than that of other positions. The traditional replacement method requires overall disassembly and then separate operations on multiple filter elements. The replacement process requires power-off of the machine, hanging safety warnings; preparing necessary tools and new filter elements; opening the dust removal bin, loosening the fixing parts, and removing the old filter elements; inserting new filter elements and then installing them into the dust removal bin with bolts, etc. These processes are not only complex and time-consuming, but also reduce the dust removal operation efficiency.

[0004] The currently used dust removal device is mostly an exhaust-type dust removal system, which usually configures a parallel filter element structure for dust filtration. Although it has a good processing ability for medium and large particle dust, for fine particle dust, the traditional exhaust-type dust removal system has a low capture efficiency. These fine dust particles are easily dispersed with the air flow, causing secondary pollution and affecting air quality. Summary of the Invention

[0005] The present invention provides an electrostatic separation and dust removal device and process for waste circuit boards, which solves the technical problems that in existing industrial dust removal devices, a parallel filter element exhaust-type structure is mostly used, the air flow directionality causes serious dust accumulation on the filter elements near the air inlet, the filter element replacement requires shutdown, opening the bin, and individual operations, the process is cumbersome, and at the same time, the capture ability for fine dust is insufficient, which is easy to cause dispersion and secondary pollution.

[0006] A waste circuit board electrostatic separation and dust removal device provided by the present invention includes a bracket, a dust suction hopper fixedly connected to the upper part of the bracket, and a dust suction pipe communicated with the upper part of the bracket. A supplementary filter dust part for automatically linearly translating and replacing the filter element during dust removal of the circuit board is arranged on the dust suction pipe. An infiltration type dust removal part for wetting and dissolving dust for further collection is arranged on the bracket and below the dust suction hopper. The supplementary filter dust part includes a rectangular tube socket embedded and communicated with the dust suction pipe. Grooves are opened on the upper and lower cavity walls of the rectangular tube socket. A plurality of filter dust components are slidably arranged between the two grooves at equal intervals. During the replacement operation, a plurality of remaining filter dust components are used to be combined with each other and integrally translate in the reverse direction along the air flow direction, so that the filter dust component originally located at the second position moves to the first position to complete the automatic compensation after the replacement of the filter dust component. A strip-shaped through groove one for taking out the filter dust component full of dust is opened on the left part of the front wall plate of the rectangular tube socket, and a strip-shaped through groove two for putting a new filter dust component during the replacement operation is opened on the right part of the front wall plate of the rectangular tube socket. A cover component is detachably arranged among the rectangular tube socket, the strip-shaped through groove one and the strip-shaped through groove two.

[0007] In a possible implementation manner, the infiltration type dust removal part includes a box body fixedly connected to the bracket through a fixing rod and having an open upper part. Two bearing rings symmetrically distributed left and right are fixedly connected between the front and rear cavity walls of the box body. A sieve cylinder is rotatably connected between the two bearing rings. A shoveling component is jointly arranged between the sieve cylinder and the bearing ring located on the right part. The upper end surface of the right wall plate of the box body is fixedly connected with a receiving pipe located in the sieve cylinder. The receiving pipe is in an inclined state with the left end high and the right end low. A filter screen is embedded in the left part of the bottom wall plate of the receiving pipe.

[0008] In a possible implementation manner, the filter dust component includes two strip-shaped seats symmetrically distributed up and down and used for sliding against the grooves. A rectangular frame is fixedly connected between the two strip-shaped seats. A rectangular pressing frame is detachably connected to the left side in the rectangular frame through bolts. A filter plate is jointly arranged between the rectangular pressing frame and the rectangular frame.

[0009] In a possible implementation manner, the cover component includes a rectangular sleeve fixedly connected to the upper end surface of the rectangular tube socket. An inverted U-shaped plug board is slidably connected in the rectangular sleeve. The two vertical sections of the plug board are respectively located in the strip-shaped through groove one and the strip-shaped through groove two. A limiting hole is opened on the transverse section of the plug board. A threaded rod matched with the limiting hole is threadedly connected to the rectangular sleeve.

[0010] In one possible implementation, the shoveling assembly includes a plurality of strip plates equidistantly fixedly connected to the circumferential inner wall of the screen drum and a bucket hinged to the side of the strip plates close to the axis of the screen drum, a plurality of mesh groups are equidistantly provided on the wall plate on the side of the bucket close to the axis of the screen drum, a plurality of sliding rods corresponding to the strip plates are equidistantly connected to the screen drum for sliding movement, and a limiting spring is fixedly connected between the sliding rod and the screen drum, a connecting rod is hinged between one end of the sliding rod close to the axis of the screen drum and the bucket, and an arc plate for cooperating with the sliding rod is fixedly connected to the upper right side of the load-bearing ring.

[0011] In a possible implementation, a drive motor is fixedly connected to the upper end surface of the box body, and an output shaft of the drive motor is transmission-connected to the screen drum via a pulley.

[0012] In a possible implementation, an input pipe extending into the screen drum is fixedly connected to the left portion of the upper end surface of the box body, a material guide shovel is fixedly connected to the bracket and below the material receiving pipe, and two annular baffles are fixedly connected to the inner wall of the screen drum symmetrically.

[0013] In a possible implementation, a plurality of positioning slots are equidistantly formed on the left end surface of the strip seat, and a plurality of positioning tongues that complement the positioning slots are equidistantly fixedly connected to the right end surface of the strip seat.

[0014] In a possible implementation, a plurality of balls are equidistantly rotatably connected to one side of the strip seat away from the rectangular frame, and the balls are symmetrically arranged in two rows. A rectangular elastic rubber strip is fixedly connected to one side of the strip seat away from the rectangular frame.

[0015] A waste circuit board electrostatic separation and dust removal process is completed using a waste circuit board electrostatic separation and dust removal device, and includes the following steps: S1, dust guidance: the dust generated during the electrostatic separation process is guided into a complementary dust filter section by a negative pressure fan.

[0016] S2. Dust removal and filtration: Use the complementary dust filter to perform multi-step filtration on the dust-laden gas to remove most of the dust.

[0017] S3. Further dust removal: The metal particles screened out by electrostatic separation and the attached fine dust are passed into the immersion dust removal section, and the remaining fine dust is adsorbed and settled by the immersion liquid.

[0018] S4. Dust collection: Regularly remove the dust from the supplementary dust filter section and the immersion dust removal section, and collect them together for treatment.

[0019] It can be seen from the above technical solutions that the present invention has the following advantages: In the present invention, by arranging multiple dust filtering components at equal intervals and sequentially along the direction of the dust suction airflow, compared with the traditional parallel filter element structure that requires whole bin disassembly or individual operation, when replacing the filter element, only the first saturated dust filtering component close to the air inlet needs to be removed. The remaining dust filtering components translate one position under their own weight, so that the dust filtering component originally located in the second position close to the air inlet automatically fills the first position, thereby realizing the sequential rotation of the filter element, significantly optimizing the filter element replacement process, without repeatedly operating the whole bin disassembly and assembly many times, and only through single-point removal and overall sliding, the filter element replacement can be completed.

[0020] In the present invention, by directly introducing the metal containing fine dust after electrostatic separation into the immersion dust removal part, the dust is fully adsorbed and dissolved in the liquid medium, effectively capturing fine dust from the source, preventing it from escaping with the airflow, ensuring more thorough dust removal, improving the overall dust removal effect, and avoiding the situation of secondary pollution caused by the failure to capture fine particles. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 It is a schematic structural diagram of the waste circuit board electrostatic separation and dust removal device provided by the present invention.

[0023] Figure 2 It is a schematic three-dimensional installation structure diagram of the complementary-position dust filtering part provided by the present invention.

[0024] Figure 3 It is a schematic front-view perspective sectional structure diagram of the complementary-position dust filtering part provided by the present invention.

[0025] Figure 4 It is a schematic structural diagram of the dust filtering component provided by the present invention.

[0026] Figure 5 It is a schematic disassembled structure diagram of the dust filtering component provided by the present invention.

[0027] Figure 6 It is a schematic installation structure diagram of the immersion dust removal part provided by the present invention.

[0028] Figure 7 It is a schematic sectional structure diagram of the immersion dust removal part provided by the present invention.

[0029] Figure 8 It is a schematic front-view perspective installation structure diagram of the material shoveling component provided by the present invention.

[0030] Figure 9 This is a partially sectional installation schematic diagram of the material shoveling assembly provided by the present invention.

[0031] Among them, the above-mentioned drawings include the following reference numerals: 1. Bracket; 2. Dust suction hopper; 3. Dust suction pipe; 4. Complementary filter dust part; 41. Rectangular tube; 42. Filter dust assembly; 421. Strip seat; 422. Rectangular frame; 423. Rectangular pressing frame; 424. Filter plate; 43. First strip through groove; 44. Second strip through groove; 45. Sealing cover assembly; 451. Rectangular sleeve; 452. Insertion plate; 453. Limit hole; 454. Threaded rod; 5. Infiltrating dust removal part; 51. Box body; 52. Bearing ring; 53. Sieve cylinder; 54. Material shoveling assembly; 541. Strip plate; 542. Shovel bucket; 543. Slide bar; 544. Connecting rod; 545. Arc plate; 55. Material receiving pipe; 6. Driving motor; 7. Input pipe; 8. Guide shovel; 9. Positioning slot; 10. Positioning tongue; 11. Ball. Specific embodiments

[0032] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] Please refer to Figure 1 , the present invention provides a technical solution: a waste circuit board electrostatic separation and dust removal device, including a bracket 1, a dust suction hopper 2 fixedly connected to the upper part of the bracket 1, and a dust suction pipe 3 connected to the upper part of the bracket 1. A complementary filter dust part 4 for automatically linearly translating and replacing the filter element during dust removal of the circuit board is provided on the dust suction pipe 3. An infiltrating dust removal part 5 for wetting and dissolving dust for further collection is provided on the bracket 1 and below the dust suction hopper 2.

[0034] Please refer to Figure 2 and Figure 3, in this embodiment, the complementary dust filtering part 4 includes a rectangular tube 41 embedded and connected to the dust suction pipe 3. Grooves are formed on the upper and lower cavity walls of the rectangular tube 41. A number of dust filtering components 42 are slidably arranged between the two grooves at equal intervals. During the replacement operation, multiple remaining dust filtering components 42 are used to combine with each other and translate integrally in the reverse direction along the air flow direction, so that the dust filtering component 42 originally located at the second position is moved to the first position to complete the automatic compensation after the replacement of the dust filtering component 42. A first strip-shaped through groove 43 for taking out the dust filtering component 42 full of dust is formed on the left part of the front wall plate of the rectangular tube 41, and a second strip-shaped through groove 44 for putting a new dust filtering component 42 during the replacement operation is formed on the right part of the front wall plate of the rectangular tube 41. A cover assembly 45 is detachably arranged among the rectangular tube 41, the first strip-shaped through groove 43 and the second strip-shaped through groove 44.

[0035] Please refer to Figure 3 , Figure 4 and Figure 5 , the dust filtering component 42 includes two strip-shaped seats 421 symmetrically distributed up and down and used for sliding against the grooves. A rectangular frame 422 is fixedly connected between the two strip-shaped seats 421. A rectangular pressing frame 423 is detachably connected to the left diagonal of the rectangular frame 422 by bolts. Two screw holes are formed on the left end face of the rectangular frame 422 and distributed along its diagonal direction. Bolts are screwed into the screw holes. Two jacks for cooperating with the bolts are formed on the rectangular pressing plate. A filter plate 424 is arranged between the rectangular pressing frame 423 and the rectangular frame 422. A number of positioning slots 9 are formed at equal intervals on the left end face of the strip-shaped seat 421, and a number of positioning tongues 10 complementary to the positioning slots 9 are fixedly connected at equal intervals on the right end face of the strip-shaped seat 421. A number of balls 11 are rotatably embedded and connected at equal intervals on one side of the strip-shaped seat 421 away from the rectangular frame 422, and two rows of balls 11 are symmetrically arranged left and right. A rectangular elastic rubber strip is fixedly connected to one side of the strip-shaped seat 421 away from the rectangular frame 422.

[0036] Please refer to Figure 1 and Figure 2 , the cover assembly 45 includes a rectangular sleeve 451 fixedly connected to the upper end face of the rectangular tube 41. An inverted U-shaped insertion plate 452 is slidably connected in the rectangular sleeve 451. The two vertical sections of the insertion plate 452 are respectively located in the first strip-shaped through groove 43 and the second strip-shaped through groove 44. A limiting hole 453 is formed on the transverse section of the insertion plate 452. A threaded rod 454 cooperating with the limiting hole 453 is screwed on the rectangular sleeve 451.

[0037] The electrostatic separation device is installed on the support 1 and is directly below the dust suction hopper 2. The dust suction hopper 2 is located above the electrostatic separation device. While the electrostatic separation device is operating, the dust suction pipe 3 is pumped by an external negative pressure fan, thereby pumping the dust generated during the electrostatic separation process to flow. The dust enters the dust suction pipe 3 through the dust suction hopper 2, and then the dust flows through the rectangular tube 41. During the process of the dust flowing from left to right, it is intercepted by a plurality of filter plates 424 evenly distributed. The filter dust accumulated by the first filter dust assembly 42 counted from the left is the most, so it will also be the first to be completely blocked.

[0038] When regularly replacing the filter dust assembly 42, manually rotate the threaded rod 454 and move it backward. Make the threaded rod 454 move out of the limit hole 453. Then, manually pull the insertion plate 452 upward until the first strip-shaped through slot 43 and the second strip-shaped through slot 44 are completely open. Then, manually pull the first rectangular frame 422 counted from the left forward and pull it out from the first strip-shaped through slot 43. The remaining filter dust assemblies 42 will automatically slide to the left under the inclination of the rectangular tube 41. (At this time, use the ball 11 to make the filter dust assembly 42 slide more easily in the rectangular tube 41, and then use the rectangular elastic rubber strip to press against the groove to ensure the sealing between the strip-shaped seat 421 and the groove), filling the position vacated by the first filter dust assembly 42 counted from the left until the second filter dust assembly 42 counted from the left moves to the position of the original first filter dust assembly 42 counted from the left.

[0039] Subsequently, take a new filter dust assembly 42 and insert it into the second strip-shaped through slot 44 and push it backward. During the backward movement of the rightmost first filter dust assembly 42, the positioning slot 9 located on the left part of the strip-shaped seat 421 will be sleeved outside the adjacent positioning tongue 10. (By inserting the positioning tongue 10 and the positioning slot 9 in the adjacent filter dust assemblies 42 together, the integrity of the connection of the filter dust assemblies 42 can be enhanced).

[0040] Finally, manually press the insertion plate 452 downward. After the insertion plate 452 is completely lowered, the first strip-shaped through slot 43 and the second strip-shaped through slot 44 can be sealed. Then, manually rotate the threaded rod 454 in the reverse direction. The threaded rod 454 moves forward until it is inserted into the limit hole 453, so as to limit the lowered insertion plate 452.

[0041] For the replaced filter dust assembly 42, the two bolts on its left part can be unscrewed and removed. Then, the rectangular pressing frame 423 can be removed, and then the filter plate 424 can be taken off. Place a new filter plate 424 into the rectangular frame 422. Subsequently, put the rectangular pressing frame 423 into the rectangular frame 422 and screw the bolts to make the rectangular pressing frame 423 tightly press the filter plate 424 on the rectangular frame 422. When subsequently replacing the first filter dust assembly 42 counted from the left, the filter dust assembly 42 with the replaced filter plate 424 can be put into the rectangular tube 41 again.

[0042] Please refer toFigure 1 , Figure 6 and Figure 7 , in this embodiment, the wet dust removal part 5 includes a box body 51 which is fixedly connected to the bracket 1 through a fixing rod and has an open upper part. Two bearing rings 52 which are symmetrically distributed left and right are fixedly connected between the front and rear cavity walls of the box body 51. A sieve cylinder 53 is rotatably connected between the two bearing rings 52. A material shoveling assembly 54 is jointly arranged between the sieve cylinder 53 and the bearing ring 52 located on the right part. The upper end face of the right wall plate of the box body 51 is fixedly connected with a receiving pipe 55 located in the sieve cylinder 53. The receiving pipe 55 is in an inclined state with the left end high and the right end low. A filter screen is embedded in the left part of the bottom wall plate of the receiving pipe 55. The upper end face of the box body 51 is fixedly connected with a driving motor 6. The output shaft of the driving motor 6 is in transmission connection with the sieve cylinder 53 through a pulley assembly. The left part of the upper end face of the box body 51 is fixedly connected with an input pipe 7 extending into the inside of the sieve cylinder 53. A guiding shovel 8 is fixedly connected to the bracket 1 and located below the receiving pipe 55. Two annular baffles are fixedly connected to the left and right sides of the inner wall of the sieve cylinder 53 symmetrically. The annular baffles are used to block the metal particles entering the sieve cylinder 53 to prevent the metal particles from falling into the box body 51.

[0043] Please refer to Figure 7 , Figure 8 and Figure 9 , the material shoveling assembly 54 includes a plurality of strip plates 541 which are fixedly connected to the circumferential inner wall of the sieve cylinder 53 at equal intervals in the circumferential direction and a shovel bucket 542 which is hinged to the side of the strip plate 541 close to the axis of the sieve cylinder 53. A plurality of mesh hole groups are equidistantly arranged on the side wall plate of the shovel bucket 542 close to the axis of the sieve cylinder 53. A plurality of sliding rods 543 corresponding to the strip plates 541 are slidably connected to the sieve cylinder 53 at equal intervals in the circumferential direction. A limiting spring is fixedly connected between the sliding rod 543 and the sieve cylinder 53. A connecting rod 544 is jointly hinged between the end of the sliding rod 543 close to the axis of the sieve cylinder 53 and the shovel bucket 542. An arc plate 545 for cooperating with the sliding rod 543 is fixedly connected to the upper right part of the bearing ring 52.

[0044] Water is injected into the box body 51 in advance, and the water level submerges the lower part of the sieve cylinder 53. The metal particles separated by the electrostatic separation device directly enter the input pipe 7, and then the metal particles mixed with fine dust enter the sieve cylinder 53. The metal particles are intercepted by the sieve cylinder 53, and the dust is dissolved in the water in the box body 51. Control the driving motor 6 to operate. The driving motor 6 drives the sieve cylinder 53 to rotate through the pulley assembly. The sieve cylinder 53 then drives the material shoveling assembly 54 to operate. The shovel 542 and the strip plate 541 in the material shoveling assembly 54 are initially in a state of being attached to each other. As the shovel 542 is attached to the strip plate 541 and rotates with the sieve cylinder 53, the metal particles located at the bottom of the inner cavity of the sieve cylinder 53 are shoveled up. When the sieve cylinder 53 drives the shovel 542 to move to the upper position, the sliding rod 543 will contact the inclined surface of the arc plate 545 and be pressed to move closer to the axis of the sieve cylinder 53. The sliding rod 543 then pushes the connecting rod 544 to move, and the connecting rod 544 then pushes the shovel 542 to rotate around the strip plate 541, causing the shovel 542 to open. The rotated shovel 542 releases the particles and drops them onto the receiving pipe 55. (At this time, the water in the metal particles is filtered again using a filter screen), and then the particles roll to the right under the inclined state of the receiving pipe 55 and finally roll onto the guiding shovel 8, and the dust in the electrostatic separation process can be further cleaned up.

[0045] When the sieve cylinder 53 drives the sliding rod 543 to rotate to move away from the position where the arc plate 545 is located, the limiting spring resets and pushes the sliding rod 543 to move away from the axis of the sieve cylinder 53. The sliding rod 543 then drives the shovel 542 to move back through the connecting rod 544, so that the shovel 542 contacts and fits with the strip plate 541 again.

[0046] In addition, the present invention also provides a waste circuit board electrostatic separation and dust removal process, including the following steps: S1, dust guiding: guiding the dust generated during the electrostatic separation process into the supplementary filter dust part 4 through a negative pressure fan.

[0047] S2, dust removal and filtration: using the supplementary filter dust part 4 to perform multi-step filtration on the dust-containing gas to remove most of the dust.

[0048] S3, further dust removal: passing the metal particles separated by the electrostatic separation and the attached fine dust into the infiltration type dust removal part 5, and using the infiltration liquid to adsorb and settle the remaining fine dust.

[0049] S4, dust collection: regularly removing the dust in the supplementary filter dust part 4 and the infiltration type dust removal part 5 and collecting them together for unified treatment.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention.

[0051] In addition, the terms "first", "second", "No. 1", "No. 2" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "No. 1", "No. 2" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electrostatic separation and dust removal device for waste circuit boards, comprising a bracket, a dust suction hopper fixedly connected to the upper part of the bracket, and a dust suction duct connected to the upper part of the bracket, characterized in that: The dust suction pipe is provided with a replacement dust filter part for automatically linearly replacing the filter element when dusting the circuit board, and the bracket is provided with an immersion dust removal part for moistening and dissolving the dust for further collection below the dust suction hopper; The replacement dust filter part includes a rectangular tube embedded in the dust collection pipe, and the upper and lower cavity walls of the rectangular tube are both provided with grooves, and a plurality of dust filter components are equidistantly slidably arranged between the two grooves. During the replacement operation, the plurality of remaining dust filter components are used to be combined with each other and translated as a whole in the opposite direction of the airflow, so that the dust filter component originally located in the second position is moved to the first position, so as to complete the automatic replacement after the dust filter component is replaced; A strip through slot 1 for taking out a dust filter assembly filled with dust is provided on the left side of the front wall plate of the rectangular tube, and a strip through slot 2 for placing a new dust filter assembly in the replacement operation is provided on the right side of the front wall plate of the rectangular tube, and a detachable sealing cover assembly is provided between the rectangular tube, the strip through slot 1 and the strip through slot 2.

2. The electrostatic separation and dust removal device for waste circuit boards according to claim 1 is characterized in that: The immersion dust removal part includes a box body which is fixedly connected to the bracket by a fixing rod and has an open upper part, two left-right symmetrically distributed supporting rings are fixedly connected between the front and rear cavity walls of the box body, a screen cylinder is connected to the two supporting rings for rotation, a shoveling assembly is arranged between the screen cylinder and the supporting ring on the right, a material receiving pipe located in the screen cylinder is fixedly connected to the upper end surface of the right wall plate of the box body, the material receiving pipe is in an inclined state with the left side higher and the right side lower, and a filter screen is embedded in the left part of the bottom wall plate of the material receiving pipe.

3. The electrostatic separation and dust removal device for waste circuit boards according to claim 1 is characterized in that: The dust filter assembly includes two strip seats which are symmetrically distributed up and down and are used to resist sliding on the groove. A rectangular frame is fixedly connected between the two strip seats. A rectangular pressure frame is detachably connected to the left diagonal of the rectangular frame by bolts. A filter plate is arranged between the rectangular pressure frame and the rectangular frame.

4. The electrostatic separation and dust removal device for waste circuit boards according to claim 1 is characterized in that: The sealing cover assembly includes a rectangular sleeve fixedly connected to the upper end surface of the rectangular tube, an inverted U-shaped plug plate is slidably connected in the rectangular sleeve, two vertical sections of the plug plate are respectively located in the strip through groove 1 and the strip through groove 2, a limiting hole is provided in the transverse section of the plug plate, and a threaded rod that cooperates with the limiting hole is threadedly connected to the rectangular sleeve.

5. The electrostatic separation and dust removal device for waste circuit boards according to claim 2 is characterized in that: The shoveling assembly includes a plurality of strip plates fixedly connected to the circumferential inner wall of the screen drum at equal intervals in the circumference, and a bucket hinged on the side of the strip plates close to the axis of the screen drum, a plurality of mesh groups are equidistantly provided on the wall plate on the side of the bucket close to the axis of the screen drum, a plurality of sliding rods corresponding to the strip plates are equidistantly connected to the screen drum for sliding movement thereon at equal intervals in the circumference, and a limiting spring is fixedly connected between the sliding rod and the screen drum, a connecting rod is hinged between one end of the sliding rod close to the axis of the screen drum and the bucket, and an arc plate for cooperating with the sliding rod is fixedly connected to the upper right side of the load-bearing ring.

6. The electrostatic separation and dust removal device for waste circuit boards according to claim 2 is characterized in that: The upper end surface of the box body is fixedly connected with a driving motor, and the output shaft of the driving motor is transmission-connected with the screen drum through a pulley.

7. The electrostatic separation and dust removal device for waste circuit boards according to claim 2 is characterized in that: An input pipe extending into the interior of the screen drum is fixedly connected to the left portion of the upper end surface of the box body, a material guide shovel is fixedly connected to the bracket and below the material receiving pipe, and two annular baffles are fixedly connected to the inner wall of the screen drum symmetrically.

8. The electrostatic separation and dust removal device for waste circuit boards according to claim 3 is characterized by: The left end surface of the strip seat is provided with a plurality of positioning slots at equal intervals, and the right end surface of the strip seat is fixedly connected with a plurality of positioning tongues which complementarily cooperate with the positioning slots at equal intervals.

9. The electrostatic separation and dust removal device for waste circuit boards according to claim 3 is characterized by: A plurality of balls are equidistantly and rotatably connected to one side of the strip seat away from the rectangular frame, and two rows of balls are symmetrically arranged on the left and right. A rectangular elastic rubber strip is fixedly connected to one side of the strip seat away from the rectangular frame.

10. A process for electrostatic separation and dust removal of waste circuit boards, characterized in that: The electrostatic separation and dust removal device for waste circuit boards as claimed in claim 1 is used to complete the process, including the following steps: S1. Dust guidance: The dust generated during the electrostatic separation process is guided into the supplementary dust filter section through a negative pressure fan; S2. Dust removal and filtration: Use the complementary dust filter to filter the dust-laden gas in multiple steps to remove most of the dust; S3, further dust removal: the metal particles screened out by electrostatic separation and the attached fine dust are passed into the immersion dust removal section, and the residual fine dust is adsorbed and settled by the immersion liquid; S4. Dust collection: Regularly remove the dust from the supplementary dust filter section and the immersion dust removal section, and collect them together for treatment.

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