Efficient precession centrifugal detinning equipment and detinning method for recovering tin from electronic circuit board

Abstract

The invention relates to efficient precession centrifugal detinning equipment for recovering tin from an electronic circuit board, which comprises a driving device arranged in a working box, and further comprises a centrifugal mechanism arranged on the driving device and used for performing solid-liquid separation treatment on an electronic circuit board raw material; the disturbance mechanism is arranged on the centrifugal mechanism and used for driving the raw materials to vibrate in the centrifugal process to promote solid-liquid separation; by arranging the centrifugal mechanism and the disturbance mechanism, the technical problems that in the centrifugal process, materials with large concentration are not prone to being centrifugally thrown out from the middle of the materials, the separation rate is low, parts with small concentration rapidly move towards the large-diameter end, and solid-liquid separation is not thorough due to short retention time are solved.

Description

Technical Field

[0001] The invention relates to the technical field of high-efficiency precession centrifugal tin removal, in particular to high-efficiency precession centrifugal tin removal equipment and a tin removal method for recovering tin from electronic circuit boards. Background Art

[0002] The precession centrifuge has a horizontal, conical basket structure, with the lower side of its drive shaft supported on a special fulcrum. An additional power source causes the drive shaft and the rotating support to rotate around this fulcrum at a limited amplitude and a frequency lower than the drum speed. This movement of rotating around two axes at the same time is called precession rotation, which is also the reason why the precession centrifuge is named. The precession rotation motion gives the deposited particle layer on the drum wall a fluidization effect, so that the material moves toward the large diameter end of the drum in a controlled manner. This mode of movement helps to achieve continuous feeding and continuous discharge of materials, thereby improving the processing efficiency of the centrifuge; in the centrifuge, the material is placed on the rotating drum and accelerated. As the drum accelerates, the material will generate centrifugal force, thereby achieving the separation of the material. The drum of the precession centrifuge rotates while also revolving. This composite motion enhances the effect of centrifugal force, so that different components in the material can be separated more effectively.

[0003] Patent document CN2125458U discloses a precession centrifuge, in which a transmission system drives a solid long shaft and a hollow long shaft to rotate respectively, the hollow long shaft drives a solid short shaft and a stepped drum to rotate through a universal joint, the hollow long shaft drives the hollow short shaft to rotate and drives the stepped drum to revolve around the axis of the hollow long shaft through the hollow short shaft, the suspension is introduced into the distributor through an inlet pipe, and then added to the small cone end of the drum, under the action of centrifugal force, the liquid phase is thrown out through the holes on the screen and the drum, and the solid phase material moves along the stepped screen toward the large mouth end of the drum, and when it moves to the baffle at the front of each stepped section, it changes from axial motion to radial motion and turns to the next stepped section.

[0004] However, in actual use, the inventors found that after the solid and liquid raw materials entered the drum, the materials were pressed against the inner surface of the drum under the centrifugal action of the revolution and rotation of the drum, resulting in that the materials with higher concentrations were not easily centrifuged outward from the middle of the materials during the centrifugal process, resulting in a low separation rate, while the parts with lower concentrations moved quickly to the large diameter end. Due to the short residence time, the solid-liquid separation was not complete. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problem that materials with higher concentrations are not easily centrifugally thrown out from the middle of the materials during the centrifugal process, resulting in a low separation rate, while the parts with lower concentrations move quickly to the large diameter end, resulting in incomplete solid-liquid separation due to the short residence time, by setting a centrifugal mechanism and a disturbance mechanism.

[0006] In view of the above technical problems, the technical solution is as follows: a high-efficiency centrifugal detinning device for recycling tin from electronic circuit boards, including a driving device arranged in a working box, and also including: A centrifugal mechanism, which is arranged on the driving device and is used for performing solid-liquid separation processing on the electronic circuit board raw materials; A disturbance mechanism, which is arranged on the centrifugal mechanism and is used to drive the raw material to vibrate during the centrifugation process to promote solid-liquid separation; The centrifugal mechanism includes a filter assembly arranged on a driving device and used for centrifugal separation, a limit assembly arranged on the filter assembly and used for maintaining the working state of the filter assembly at each stage, an adjustment assembly arranged on a working box and used for driving the filter assembly to complete state change, and a switching assembly arranged on the adjustment assembly and used for changing the shape of the adjustment assembly.

[0007] Preferably, the filter assembly includes a drum arranged on a driving device, a plurality of filter stages arranged on the drum, a plurality of swing plates respectively connected to the drum and the filter stages, a plurality of baffles respectively connected to the drum and the filter stages, and a first spring connected between the swing plate and the drum, wherein the swing plate is arranged at an angle.

[0008] Preferably, the limiting assembly includes a transmission rod connected to the swing plate through a rotating seat and passing through the rotating drum, a transmission arm connected to the transmission rod, a first clamping block connected to the transmission rod through a second spring, a mounting groove opened on the rotating drum, a second clamping block connected to the mounting groove, and a third clamping block connected in the mounting groove and connected to the second clamping block through a third spring.

[0009] Preferably, the adjustment assembly includes a mounting frame arranged on the working box and connected to a first reciprocating screw arranged on the working box, two sets of U-shaped frames connected to the mounting frame, and a triangular block connected to the end of the U-shaped frame and used to drive the transmission arm.

[0010] Preferably, the switching assembly includes a support frame connected to the mounting frame, a second reciprocating screw connected to the support frame and having one end connected to a ratchet gear, a positioning frame connected to the support frame and connected to the second reciprocating screw, two groups of positioning rods respectively connected to the U-shaped frame and located in the positioning frame, and a rack connected to the working box and meshing with the ratchet gear for transmission.

[0011] Preferably, the disturbance mechanism includes an oscillating component connected to the drum and used to drive the swing plate to vibrate, and an auxiliary component arranged on the filter table and used to assist in separating the liquid from the drum.

[0012] Preferably, the oscillation assembly includes multiple groups of slide rails connected to the rotating drum, a slide seat connected to the slide rails, a vibration rod connected to the slide seat through multiple groups of fourth springs, a vibration ring connected to the vibration rod, a dual-axis motor connected to the vibration rod, and a cam connected to the output end of the dual-axis motor.

[0013] Preferably, the auxiliary component includes a guide rod arranged on the filter table, a scraper connected to the guide rod and connected to the filter table through a fifth spring, a first trigger rod connected to the scraper, a stopper connected to the end of the first trigger rod through a torsion spring, and a second trigger rod connected to the slide seat and used to drive the first trigger rod to deflect.

[0014] The high-efficiency precession centrifugal detinning equipment for recycling tin from electronic circuit boards also includes a heat preservation mechanism arranged on the working box and used to maintain a constant temperature in the working box; The heat preservation mechanism includes an air inlet pipe and an air outlet pipe respectively arranged on the working box, a wind plate connected to the working box through a rotating shaft, an extrusion block connected to the top of the rotating shaft, a sieve plate connected to the working box and having a sixth spring connected to the working box, and an L-shaped rod connected to the sieve plate and cooperating with the extrusion block to drive the sieve plate to vibrate.

[0015] The method for removing tin by high-efficiency precession centrifugal detinning for recycling tin from electronic circuit boards is based on the high-efficiency precession centrifugal detinning equipment for recycling tin from electronic circuit boards, comprising the following steps: Step 1: feeding process, feeding the electronic circuit board raw materials into the innermost part of the drum through the feeding port of the working box, and the drum rotates to evenly place the raw materials in the drum to wait for heating; Step 2, heating process, after the raw materials are added, the heating wire and temperature control mechanism arranged on the drum make the internal temperature of the detinning equipment reach the melting point of tin and keep it warm; Step 3, centrifugal process, the driving device drives the filter component to rotate and revolve to complete the continuous separation of tin liquid and solid matter. In the process, with the cooperation of the limit component and the filter component, the residence time of the raw material in the drum during the centrifugal process is increased, and the adjustment component and the switching component cooperate to transport the raw material from the inside to the outside step by step, the tin liquid is discharged through the filter hole, and the solid part is discharged through the large end of the drum; during the separation process, the disturbance mechanism drives the filter component to vibrate at a high frequency through the oscillation component to turn over and disperse the raw material, and the auxiliary component scrapes the filtered liquid in time; Step 4, the discharge process, during the centrifugation process, the liquid raw material is discharged from the discharge hole on the drum under the action of centrifugal force, and flows to the collection tank for collection. The solid raw material falls outward from the large diameter end of the drum and is collected to complete the solid-liquid separation.

[0016] Beneficial effects of the present invention: (1) The present invention provides a filter assembly in a centrifugal mechanism to feed the material layer by layer in a progressive manner, thereby increasing the material residence time. At the same time, a progressive conveying structure is provided to periodically transfer the material backward, thereby ensuring that the solid-liquid separation is carried out thoroughly, thereby solving the technical problem that the part with a smaller concentration quickly moves to the large diameter end, resulting in incomplete solid-liquid separation due to a short residence time; (2) In the present invention, by providing an oscillating component in the disturbance mechanism, the intercepted part of the material is disturbed during the progressive transmission process, so as to realize the turning and shaking of the material, thereby avoiding the problem of the accumulation of materials with high concentrations and the difficulty of centrifugal separation of the tin liquid, thereby improving the separation efficiency of the tin liquid; (3) In the present invention, an auxiliary component is provided in the disturbance mechanism, and during the disturbance process, the auxiliary component is driven by its automatic reset power to scrape the liquid filtered out of the filter hole position, thereby reducing the filtration pressure of the filter hole and improving the separation effect; (4) In the present invention, a heat preservation mechanism is provided to maintain a constant temperature inside the working box by blowing in high-temperature gas during operation, thereby ensuring that the metal part to be separated from the raw material can always be stably maintained in a liquid state, thereby promoting centrifugal separation. At the same time, the power of the airflow is used to drive the screen plate to vibrate, and the output solid raw material is separated to complete the separation work, so that the separation work is carried out thoroughly.

[0017] In summary, the equipment has the advantages of thorough solid-liquid separation, high separation efficiency, and balanced temperature control, and is particularly suitable for the field of high-efficiency precession centrifugal detinning technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural diagram of the centrifugal mechanism.

[0021] Figure 3 It is a schematic diagram of the structure of the drum.

[0022] Figure 4 A schematic diagram of the structure of the filter component.

[0023] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.

[0024] Figure 6Schematic diagram of the disturbance mechanism.

[0025] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part B.

[0026] Figure 8 This is a schematic diagram of the raw material position after the swing plate oscillates.

[0027] Fig. 9 It is a schematic diagram of the structure of the limit component.

[0028] Fig.10 A schematic diagram of the structure of the adjustment component.

[0029] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of part C.

[0030] Fig.12 It is a structural schematic diagram of the insulation mechanism.

[0031] Fig.13 It is a schematic diagram of the working position status of the adjustment component.

[0032] Fig.14 Schematic diagram of two working states of the swing plate.

[0033] Fig.15 Schematic diagram of the flow direction after solid-liquid separation.

[0034] Fig.16 Schematic diagram of the production process. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0036] Embodiment 1 like Figures 1 to 10 and Fig.15 As shown, the high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards includes a driving device 200 arranged in a working box 100, and also includes: A centrifugal mechanism 1, which is arranged on the driving device 200 and is used for performing solid-liquid separation processing on the electronic circuit board raw materials; A disturbance mechanism 2, which is arranged on the centrifugal mechanism 1 and is used to drive the raw material to vibrate during the centrifugation process to promote solid-liquid separation; The centrifugal mechanism 1 includes a filter assembly 11 arranged on a driving device 200 and used for centrifugal separation, a limit assembly 12 arranged on the filter assembly 11 and used for maintaining the working state of the filter assembly 11 at each stage, an adjustment assembly 13 arranged on a working box 100 and used for driving the filter assembly 11 to complete state change, and a switching assembly 14 arranged on the adjustment assembly 13 and used for changing the shape of the adjustment assembly 13.

[0037] In this embodiment, the filter assembly 11 in the centrifugal mechanism 1 is provided to feed the material layer by layer in a progressive manner to increase the residence time of the material. At the same time, a progressive conveying structure is provided to periodically transfer the material backward to ensure that the solid-liquid separation is thorough, thereby solving the technical problem that the part with a smaller concentration quickly moves to the large diameter end and the solid-liquid separation is not thorough due to the short residence time.

[0038] In detail, first, the driving device 200 drives the filter component 11 in the centrifugal mechanism 1 to rotate and revolve, and then uses centrifugal force to complete the solid-liquid separation of the electronic components. During the process, with the cooperation of the limit component 12 and the filter component 11, the raw material is blocked in the direction of movement during centrifugation, thereby extending the residence time of the raw material in the drum 111. During the process, the disturbance mechanism 2 disperses the solid and liquid through vibration, further promoting the separation of the two.

[0039] It should be noted that the driving device 200 drives the drum 111 to revolve and rotate through components such as motors, belts, inner and outer shafts, and the specific transmission structure is the existing technology, such as the transmission structure recorded in patent publication number CN2125458U.

[0040] Further, if Figures 3 to 5 and Figure 8 As shown, the filter assembly 11 includes a rotating drum 111 arranged on a driving device 200, a plurality of filter stages 112 arranged on the rotating drum 111, a plurality of swing plates 113 respectively connected to the rotating drum 111 and the filter stages 112, a plurality of baffles 114 respectively connected to the rotating drum 111 and the filter stages 112, and a first spring 115 connected between the swing plate 113 and the rotating drum 111, and the swing plate 113 is arranged tilted.

[0041] In this embodiment, a plurality of filter stages 112 and swing plates 113 are provided to form a stepped progressive structure in the drum 111, thereby changing the conventional truncated cone-shaped smooth structure and allowing the raw materials to stay longer in the drum 111, thereby ensuring the effect of centrifugal separation.

[0042] In detail, first, workers feed the electronic circuit board raw materials into the innermost part of the drum 111 through the feed port of the working box 100, and evenly spread them out to wait for heating. After heating and keeping warm for a certain period of time until the tin in the raw materials is molten, the raw materials slowly move on the innermost swing plate 113 under the action of centrifugal force until they reach the filter station 112 and are blocked, thereby increasing the residence time.

[0043] Specifically, according to the applicant's test data, when a single heating method is used for detinning at 250°C, such as heating with an electric heating wire, a small amount of components fall off, the solder joints on the surface of the substrate change significantly, and the material has no signs of pyrolysis; when the detinning process is summarized at 300 degrees Celsius, the material shows obvious signs of pyrolysis, and the amount of components dropped is more than that under the 250°C test conditions; and the detinning method of 250°C steam detinning + electric heating wire combined heating for detinning achieves the advantages of high detinning efficiency and no obvious signs of pyrolysis on the substrate.

[0044] The present application preferably uses 250°C steam detinning, wherein high-temperature steam with a temperature of 250°C is continuously introduced and the material in the drum is heated by a heating wire. After the temperature is kept constant for 40-70 minutes, the drum is rotated and the tin liquid and the solid material are separated by centrifugal force.

[0045] Under this heating condition, the tin soldering points on the waste circuit boards melt and fall off effectively, the tin liquid recovery rate is high, and the separated solid materials have no obvious signs of pyrolysis, so they can be classified and recycled by other methods.

[0046] It should be noted that filter holes are provided on the drum 111, the filter table 112 and the swing plate 113. The filter holes have a small diameter, which effectively prevents solids from being separated therefrom, and are therefore not shown in the figure. The swing plates 113 are arc-shaped as a whole and are tilted, and are mutually covered with each other to prevent solid particles from leaking out. The rotation direction of the drum 111 drives the raw materials to fall from the upper swing plate 113 to the lower swing plate 113, which also effectively prevents the leakage of solid particles. The swing plate 113 is connected to the drum 111 or the filter table 112, and the raw materials will not enter the hinged position under the action of the baffle 114 and the centrifugal force.

[0047] In addition, the electronic circuit board raw material mentioned in the present application is a small piece of circuit board after being broken or broken into smaller circuit board particles, thereby improving the detinning efficiency.

[0048] Further, if Figure 6 and Fig. 9As shown, the limiting assembly 12 includes a transmission rod 122 connected to the swing plate 113 through a rotating seat 121 and passing through the rotating drum 111, a transmission arm 123 connected to the transmission rod 122, a first clamping block 125 connected to the transmission rod 122 through a second spring 124, a mounting groove 126 opened on the rotating drum 111, a second clamping block 127 connected to the mounting groove 126, and a third clamping block 129 connected in the mounting groove 126 and connected to the second clamping block 127 through a third spring 128.

[0049] In this embodiment, the limiting assembly 12 enables the plurality of swing plates 113 to change their state from an inclined state to a horizontal state, thereby driving the raw materials to start advancing and perform centrifugal work at the next position.

[0050] In detail, after the raw material has been centrifuged on the innermost swing plate 113 for a certain period of time, the transmission rod 122 moves upward under the drive of the adjustment assembly 13, thereby driving the first clamping block 125 to contract and pass over the second clamping block 127, and under the action of the second spring 124, the first clamping block 125 is reset, and the first clamping block 125 and the second clamping block 127 are restrained from each other so that the first spring 115 cannot drive the swing plate 113 to reset. At this time, the surface of the swing plate 113 is parallel to the surface of the filter stage 112, and also parallel to the inner wall of the drum 111, so that the swing plate 113 is stable. Under the premise of the raw material moving speed, the raw material is transported to the position of the next group of swing plates 113. When the above-mentioned swing plate 113 begins to reset, the second block 127 continues to cross the third block 129 driven by the adjusting component 13. At this time, the adjusting component 13 withdraws, and the swing plate 113 drives the transmission rod 122 and the first block 125 to move under the pull of the first spring 115. The pressure causes the third spring 128 to contract, and the second block 127 and the third block 129 are combined to form a platform that the first block 125 can cross, and then the swing plate 113 completes the reset work.

[0051] It should be noted that the solid-liquid separation of the raw material is mainly carried out when the swing plate 113 is not parallel to the drum 111. The depression formed between the swing plate 113 and the filter table 112 acts as a barrier, increasing the residence time of the raw material to enhance the solid-liquid separation effect. When they are parallel, the material is transported forward. The elastic force of the second spring 124 is much greater than the elastic force of the third spring 128.

[0052] The solid-liquid separation of the raw materials is mainly carried out when the swing plate 113 is parallel to the drum 111. When they are not parallel, the depression formed between the swing plate 113 and the filter table 112 mainly serves as a barrier to increase the residence time of the raw materials. At the same time, a certain amount of filtering work is also carried out on the side of the filter table 112, but at this time the raw material accumulation filtration efficiency is poor.

[0053] Further, if Figures 9 to 14As shown, the adjustment assembly 13 includes a mounting frame 132 arranged on the working box 100 and connected to a first reciprocating screw rod 131 arranged on the working box 100, two sets of U-shaped frames 133 connected to the mounting frame 132, and a triangular block 134 connected to the end of the U-shaped frame 133 and used to drive the transmission arm 123.

[0054] In this embodiment, the adjusting assembly 13 is provided so that the plurality of swing plates 113 are spaced apart to form depressions, which block the movement of the raw materials in a stepped manner, thereby increasing the centrifugal time and ensuring the effect of centrifugal filtration.

[0055] In detail, when the first reciprocating screw rod 131 rotates, the mounting frame 132 starts to move toward the position of the drum 111, and the U-shaped frame 133 and the triangular block 134 connected to the mounting frame 132 move to the specified position. The positions of the ends of the two sets of U-shaped frames 133 are different, and the horizontal limiting and limiting release operations of the swing plate 113 are performed respectively. When the drum 111 orbits to the position of the adjustment component 13, its self-rotation causes the multiple transmission arms 123 to be squeezed against it, thereby driving the limiting component 12 to work.

[0056] It should be noted that the first reciprocating screw 131 is driven by an external motor.

[0057] Further, if Figures 9 to 14 As shown, the switching assembly 14 includes a support frame 141 connected to the mounting frame 132, a second reciprocating screw rod 143 connected to the support frame 141 and having a ratchet gear 142 connected at one end, a positioning frame 144 connected to one side of the support frame 141, two groups of positioning rods 145 respectively connected to the U-shaped frame 133 and located in the positioning frame 144, and a rack 146 connected to the working box 100 and meshing with the ratchet gear 142 for transmission.

[0058] In this embodiment, by setting the switching component 14, the front and rear positions of the two sets of U-shaped rods are automatically exchanged each time the adjustment component 13 is reset, so that the stepped shape in the drum 111 changes alternately, driving the raw materials to gradually advance until they are output.

[0059] In detail, when the adjustment component 13 is reset, the ratchet gear 142 meshes with the rack 146 for transmission, and then drives the positioning frame 144 to move on the support frame 141 through the second reciprocating screw 143. When the positioning frame 144 moves, the pressure causes the two groups of positioning rods 145 to move, and then, driven by the positioning rods 145, the two groups of U-shaped frames 133 complete the front and rear position switching.

[0060] It should be noted that the positioning frame 144 is slidably connected to one side of the support frame 141 , and the second reciprocating screw rod 143 passes through the positioning frame 144 and is threadedly connected thereto, driving the positioning frame 144 to reciprocate.

[0061] Further, if Figures 4 to 6 As shown, the disturbance mechanism 2 includes an oscillating component 21 connected to the drum 111 and used to drive the swing plate 113 to vibrate, and an auxiliary component 22 arranged on the filtering stage 112 and used to assist in separating the liquid from the drum 111 .

[0062] In this embodiment, by providing a disturbance mechanism 2, the intercepted material is disturbed during the progressive conveying process to achieve turning and shaking of the material, thereby avoiding the problem of difficult centrifugal separation of tin liquid due to accumulation of materials with high concentration, thereby improving the separation efficiency of tin liquid.

[0063] In detail, first, during the centrifugation process, the oscillation component 21 drives the swing plate 113 to oscillate at a high frequency through vibration, thereby promoting the separation of solid and liquid. At the same time, the auxiliary component 22 scrapes off the liquid accumulated on the filter holes inside the filter table 112 to improve the filtering effect.

[0064] Further, if Figures 4 to 7 As shown, the oscillation assembly 21 includes multiple groups of slide rails 211 connected to the rotating drum 111, a slide seat 212 connected to the slide rails 211, a vibration rod 214 connected to the slide seat 212 through multiple groups of fourth springs 213, a vibration ring 215 connected to the vibration rod 214, a dual-axis motor 216 connected to the vibration rod 214, and a cam 217 connected to the output end of the dual-axis motor 216.

[0065] In this embodiment, by providing the oscillation component 21, on the one hand, the advancement and movement rate of materials with higher concentrations is promoted to achieve the turning and shaking of the materials. On the other hand, in the recessed position formed by the swing plate 113 and the filter table 112, the centrifugal filtration effect is reduced due to the accumulation of raw materials. However, during the high-frequency vibration of the swing plate 113, the raw materials are constantly turned over and laid on the side of the filter table 112, thereby increasing the contact area and effectively improving the filtration effect at this time.

[0066] In detail, during the centrifugation process, the dual-axis motor 216 rotates to drive the vibration rod 214 to vibrate in multiple directions by relying on the cam 217, and then the vibration rod 214 and the vibration ring 215 begin to squeeze the transmission rod 122 that is not fixed by the limit assembly 12, thereby causing the transmission rod 122 and the swing plate 113 to vibrate at high frequency.

[0067] It should be noted that the swing plates 113 in the same group overlap each other, so when any one of them is driven, the states of the multiple swing plates 113 in the same group change together.

[0068] Further, if Figures 4 to 7As shown, the auxiliary component 22 includes a guide rod 221 arranged on the filter stage 112, a scraper 223 connected to the guide rod 221 and connected to the filter stage 112 through a fifth spring 222, a first trigger rod 224 connected to the scraper 223, a stopper 226 connected to the end of the first trigger rod 224 through a torsion spring 225, and a second trigger rod 227 connected to the slide seat 212 and used to drive the first trigger rod 224 to deflect.

[0069] It is worth mentioning here that by setting up the auxiliary component 22 in the disturbance mechanism 2, the auxiliary component 22 is driven by its automatic reset power to scrape the liquid filtered out from the filter hole position during the disturbance process, thereby reducing the filtration pressure of the filter hole and improving the separation effect.

[0070] In detail, when the drum 111 rotates, due to the sliding connection between the slide 212 and the slide rail 211, the slide 212 is always located below the drum 111, and then a plurality of blocks 226 are squeezed with the second trigger rod 227 when the drum 111 rotates. Initially, the pressure causes the block 226 to move together with the first trigger rod 224, driving the scraper 223 to perform scraping work inside the filter station 112. When the scraper 223 reaches the edge position, the pressure causes the block 226 to rotate, the second trigger rod 227 passes over the block 226, and the scraper 223 is reset under the drive of the fifth spring 222.

[0071] Embodiment 2 like Fig.12 and Fig.15 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: Further, if Fig.12 and Fig.15 As shown, the high-efficiency centrifugal detinning equipment for recycling tin from electronic circuit boards also includes a heat preservation mechanism 3 arranged on the working box 100 and used to maintain a constant temperature in the working box 100; The heat preservation mechanism 3 includes an air inlet pipe 31 and an air outlet pipe 32 respectively arranged on the working box 100, a wind plate 34 connected to the working box 100 through a rotating shaft 33, an extrusion block 35 connected to the top of the rotating shaft 33, a sieve plate 37 connected to the working box 100 and having a sixth spring 36 connected to the working box 100, and an L-shaped rod 38 connected to the sieve plate 37 and cooperating with the extrusion block 35 to drive the sieve plate 37 to vibrate.

[0072] The heat preservation mechanism also includes a heating wire arranged on the drum for heating the material in the drum.

[0073] It is worth mentioning that by setting up the heat preservation mechanism 3, the temperature inside the working box 100 is maintained constant by blowing in high-temperature gas during operation, ensuring that the metal part that needs to be separated in the raw material can always maintain a stable liquid state, thereby promoting centrifugal separation, and at the same time using the power of the airflow to drive the sieve plate 37 to vibrate, and the output solid raw material is separated to complete the separation work, so that the separation work is carried out thoroughly.

[0074] In detail, when the high-temperature gas enters the working box 100 through the air inlet pipe 31, the gas needs to enter the working box 100 quickly to reduce the energy loss outside. However, the high-speed inflow of the airflow is likely to affect the natural movement process of the raw materials during centrifugation, and at the same time accelerate the outflow of the airflow, resulting in energy waste. Therefore, when the airflow flows in, its kinetic energy is first consumed by the wind plate 34 on the rotating shaft 33, thereby reducing the flow capacity and dispersing it to the surroundings. At the same time, the rotating shaft 33 drives the L-shaped rod 38 to move downward through the extrusion block 35, and then cooperates with the reset effect of the sixth spring 36 to make the filter plate begin to vibrate, which is beneficial to the transmission and collection of solid particles.

[0075] It should be noted that the tail end of the gas outlet pipe 32 is connected to a waste gas treatment device, and the gas is discharged after being harmlessly treated and meeting the standards.

[0076] Embodiment 3 like Fig.16 As shown, the method for efficiently removing tin by centrifugal detinning for recycling tin from electronic circuit boards is based on the efficient centrifugal detinning equipment for recycling tin from electronic circuit boards, and comprises the following steps: Step 1, feeding process, feeding the electronic circuit board raw materials into the innermost part of the drum 111 through the feeding port of the working box 100, and the drum 111 rotates to evenly arrange the raw materials in the drum 111 to wait for heating; Step 2, heating process, after the raw materials are added, the heating wire and temperature control mechanism provided on the drum 111 make the internal temperature of the detinning equipment reach the melting point of tin and keep it warm; Step 3, centrifugal process, the driving device 200 drives the filter component 11 to rotate and revolve, and completes the continuous separation of the tin liquid and the solid matter. In the process, with the cooperation of the limit component 12 and the filter component 11, the residence time of the raw material in the drum 111 during the centrifugal process is increased, and the adjustment component 13 and the switching component 14 cooperate to transport the raw material from the inside to the outside step by step, the tin liquid is discharged through the filter hole, and the solid part is discharged through the large end of the drum 111; during the separation process, the disturbance mechanism 2 drives the filter component 11 to vibrate at a high frequency through the oscillation component 21, and the raw material is turned over and dispersed, and the auxiliary component 22 scrapes the filtered liquid in time; Step 4, the discharge process, during the centrifugation process, the liquid raw material is discharged from the discharge hole on the drum 111 under the action of centrifugal force, and flows to the collection tank for collection. The solid raw material falls outward from the large diameter end of the drum 111 and is collected to complete the solid-liquid separation.

[0077] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0078] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0079] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An efficient centrifugal detinning device for recycling tin from electronic circuit boards, comprising a driving device arranged in a working box, characterized in that: Also includes: A centrifugal mechanism, which is arranged on the driving device and is used for performing solid-liquid separation processing on the electronic circuit board raw materials; A disturbance mechanism, which is arranged on the centrifugal mechanism and is used to drive the raw material to vibrate during the centrifugation process to promote solid-liquid separation; The centrifugal mechanism includes a filter assembly arranged on a driving device and used for centrifugal separation, a limit assembly arranged on the filter assembly and used for maintaining the working state of the filter assembly at each stage, an adjustment assembly arranged on a working box and used for driving the filter assembly to complete state change, and a switching assembly arranged on the adjustment assembly and used for changing the shape of the adjustment assembly.

2. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 1 is characterized in that: The filter assembly includes a rotating drum arranged on a driving device, a plurality of filter stages arranged on the rotating drum, a plurality of swing plates respectively connected to the rotating drum and the filter stages, a plurality of baffles respectively connected to the rotating drum and the filter stages, and a first spring connected between the swing plate and the rotating drum, wherein the swing plate is arranged tilted.

3. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 2 is characterized in that: The limiting assembly includes a transmission rod connected to the swing plate through a rotating seat and passing through the rotating drum, a transmission arm connected to the transmission rod, a first clamping block connected to the transmission rod through a second spring, a mounting groove opened on the rotating drum, a second clamping block connected to the mounting groove, and a third clamping block connected in the mounting groove and connected to the second clamping block through a third spring.

4. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 3 is characterized in that: The adjustment assembly comprises a mounting frame arranged on the working box and connected to a first reciprocating screw arranged on the working box, two sets of U-shaped frames connected to the mounting frame, and a triangular block connected to the end of the U-shaped frame and used for driving a transmission arm.

5. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 4 is characterized in that: The switching assembly includes a support frame connected to the mounting frame, a second reciprocating screw connected to the support frame and having one end connected to a ratchet gear, a positioning frame connected to one side of the support frame, two groups of positioning rods respectively connected to the U-shaped frame and located in the positioning frame, and a rack connected to the working box and meshing with the ratchet gear for transmission.

6. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 2, characterized in that: The disturbance mechanism comprises an oscillating component connected to the drum and used for driving the swing plate to vibrate, and an auxiliary component arranged on the filter table and used for assisting the separation of the liquid from the drum.

7. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 6, characterized in that: The oscillation assembly includes multiple groups of slide rails connected to the rotating drum, a slide seat connected to the slide rails, a vibration rod connected to the slide seat through multiple groups of fourth springs, a vibration ring connected to the vibration rod, a dual-axis motor connected to the vibration rod, and a cam connected to the output end of the dual-axis motor.

8. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 7, characterized in that: The auxiliary component includes a guide rod arranged on the filter stage, a scraper connected to the guide rod and connected to the filter stage through a fifth spring, a first trigger rod connected to the scraper, a stopper connected to the end of the first trigger rod through a torsion spring, and a second trigger rod connected to the slide seat and used to drive the first trigger rod to deflect.

9. The high-efficiency centrifugal detinning equipment for recovering tin from electronic circuit boards according to claim 1, characterized in that: It also includes a heat preservation mechanism arranged on the working box and used to maintain a constant temperature in the working box; The heat preservation mechanism includes an air inlet pipe and an air outlet pipe respectively arranged on the working box, a wind plate connected to the working box through a rotating shaft, an extrusion block connected to the top of the rotating shaft, a sieve plate connected to the working box and having a sixth spring connected to the working box, and an L-shaped rod connected to the sieve plate and cooperating with the extrusion block to drive the sieve plate to vibrate.

10. A method for efficiently removing tin by centrifugal detinning for recovering tin from electronic circuit boards, based on the device for efficiently removing tin by centrifugal detinning for recovering tin from electronic circuit boards as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: feeding process, feeding the electronic circuit board raw materials into the innermost part of the drum through the feeding port of the working box, and the drum rotates to evenly place the raw materials in the drum to wait for heating; Step 2, heating process, after the raw materials are added, the heating wire and temperature control mechanism arranged on the drum make the internal temperature of the detinning equipment reach the melting point of tin and keep it warm; Step 3, centrifugal process, the driving device drives the filter component to rotate and revolve to complete the continuous separation of tin liquid and solid matter. In the process, with the cooperation of the limit component and the filter component, the residence time of the raw material in the drum during the centrifugal process is increased, and the adjustment component and the switching component cooperate to transport the raw material from the inside to the outside step by step, the tin liquid is discharged through the filter hole, and the solid part is discharged through the large end of the drum; during the separation process, the disturbance mechanism drives the filter component to vibrate at a high frequency through the oscillation component to turn over and disperse the raw material, and the auxiliary component scrapes the filtered liquid in time; Step 4, the discharge process, during the centrifugation process, the liquid raw material is discharged from the discharge hole on the drum under the action of centrifugal force, and flows to the collection tank for collection. The solid raw material falls outward from the large diameter end of the drum and is collected to complete the solid-liquid separation.

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