Waste circuit board cleaning wastewater recycling treatment device

Abstract

The invention discloses a waste circuit board cleaning wastewater recycling treatment device, relates to the technical field of wastewater recycling treatment, and aims to solve the technical problems that a stain cleaning procedure of a waste circuit board does not have intelligent regulation and control, and water temperature and liquid level numerical values of the waste circuit board cannot be correspondingly adjusted. According to the invention, a wastewater flyback feeding and discharging structure is arranged, and the wastewater flyback feeding and discharging structure is formed by mutual cooperation of a flyback belt in a flyback box, stirring blades in a mixing box, a liquid feeding pipe and a liquid discharging pipe; therefore, in combination with the key content of the invention, the flyback direction of the flyback belt in the flyback box, the stirring degree of the stirring blades in the mixing box and the feeding and discharging speed of the wastewater in the liquid feeding pipe and the liquid discharging pipe are intelligently controlled to jointly realize on-demand treatment in the wastewater recycling treatment process, so that undirected conduction of stains on the liquid level of the wastewater after cleaning is avoided, and the cleaning efficiency is improved. And the situation that waste water cannot be fully utilized after cleaning is further prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater recycling and treatment, and in particular to a device for recycling wastewater from cleaning waste circuit boards. Background Art

[0002] With the rapid development of the electronics industry, electronic equipment has been applied to almost every field of the national economy, resulting in the generation of a large number of waste electronic products. The recycling of waste electronic products is the reuse of intact PCBs or electronic components. Damaged PCBs or electronic components are crushed and then the metal and plastic materials are recovered. The cleaning process is a relatively important step in the recycling process of intact PCBs or electronic components. The types of stains mainly include dust, oil, thermal grease, conformal coating, and sugar stains. These stains are different from the stains caused by the circuit board production process.

[0003] In conjunction with the above-mentioned reference to the disclosure of the existing patent publication number CN118455188A, the wastewater after circuit board cleaning is only capable of changing the physical position of the circuit board, but does not have the function of treating the cleaning wastewater on demand. Moreover, the stain cleaning process of the waste circuit boards does not have intelligent control, and is unable to adjust the water temperature and liquid level values correspondingly to the waste circuit boards.

[0004] For this purpose, this application proposes a solution. Summary of the Invention

[0005] The purpose of the present invention is to provide a waste circuit board cleaning wastewater reuse treatment device to solve the technical problem that the stain cleaning process of the waste circuit boards does not have intelligent control and cannot adjust the water temperature and liquid level values of the waste circuit boards accordingly.

[0006] The object of the present invention can be achieved through the following technical solutions: A waste circuit board cleaning wastewater reuse treatment device, comprising a liquid collecting tank and a mixing box arranged on a frame, a waste liquid bucket for wastewater replenishment is provided outside the mixing box, and a connected reflux box is provided on both sides of the upper end of the liquid collecting tank, the mixing box is divided into two areas by a middle partition, and an inclined bottom plate is installed at the bottom of the mixing box corresponding to the partition, the mixing box is respectively equipped with an outer discharge pipe 1 and an outer discharge pipe 2 connected to the reflux box through the two areas, and a reflux mechanism for wastewater screening is installed between the inner sides of the reflux box;

[0007] The retracement mechanism includes a symmetrically arranged rotating rod, a plurality of sprockets are connected to the outer surface of the rotating rod, and a pair of sprockets are commonly connected to the outer surface of a retracement belt that extends into the interior of the retracement box; the waste liquid barrel is connected to the outside of a liquid delivery mechanism, and a photoelectric sensor corresponding to the retracement box and the discharge end of the waste liquid barrel is installed on one side of the upper end of the mixing box.

[0008] Further configured as: the liquid delivery mechanism includes a liquid delivery pipe communicated with the waste liquid barrel and a frame, the frame is installed on one side of the upper end of the mixing tank, a drain pipe sleeved outside the mixing tank is installed on the frame, a water pump is installed on the top of the frame, and a lower delivery pipe facing the inside of the mixing tank is installed through the inner side of the upper end of the drain pipe.

[0009] Further configured as: spiral belts are inserted into the interiors of the liquid delivery pipe and the drain pipe, the spiral belts are heating belts and are connected to electric heaters.

[0010] Further configured as: angle plates are installed on both sides of the upper end of the liquid collection tank, a hanging rod is installed between a pair of the angle plates, both ends of the rotating rod are rotatably installed on the hanging rod, and the outer upper ends of the angle plates extend to the upper end of the back-scanning belt.

[0011] Further configured as: inner rotating wheels are installed at both ends of the rotating rod, a blowing roller horizontally aligned with the axis position of the rotating rod is installed at one end of the liquid collection tank, and blowing slits are formed in the blowing roller.

[0012] Further configured as: upper through holes and lower through holes are respectively formed in the middle and the lower side of the partition plate, the first outer drain pipe is installed at a position corresponding to the lower through hole on the inclined bottom plate, and the second outer drain pipe is installed at an upper side position corresponding to the bottom of the inclined bottom plate of the mixing tank.

[0013] Further configured as: a support rod is installed in the middle of the inner side of the mixing tank, a motor is installed on the support rod, and a stirring blade facing the inside of the mixing tank is installed at the output end of the motor.

[0014] Further configured as: the photoelectric sensor is externally connected to an industrial control system, and the industrial control system includes a data acquisition module, a liquid level temperature difference control module, and a signal execution module; the data acquisition module is used to obtain the waste water liquid level value and the supply and discharge temperature value during the cleaning waste water of the waste printed circuit board, wherein the waste water liquid level value includes the liquid level heights of the cleaning waste water in the middle of the mixing tank and the back-scanning tank and is marked as FYz, and the supply and discharge temperature value includes the temperature values of the cleaning waste water inside and outside the mixing tank and is marked as GPt;

[0015] The data acquisition module sends the waste water liquid level value FYz and the supply and discharge temperature value GPt to the data analysis module, generates the average waste water liquid level value and the average supply and discharge temperature value, constructs a calculation formula for the reuse treatment value in combination with the average waste water liquid level value and the average supply and discharge temperature value, compares and analyzes the reuse treatment value with a preset reuse treatment threshold value. If the reuse treatment value is greater than or equal to the reuse treatment threshold value, a normal reuse treatment signal is generated. If the reuse treatment value is less than the reuse treatment threshold value, a reuse abnormal treatment signal is generated;

[0016] The data acquisition module sends the reuse normal processing signal and the reuse abnormal processing signal to the signal execution module, and the signal execution module performs relevant actions according to the received reuse normal processing signal and reuse abnormal processing signal.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention aims at the technical problem that the stain cleaning process of waste printed circuit boards does not have intelligent control and cannot adjust the water temperature and liquid level values of waste printed circuit boards accordingly. A waste water backscanning supply and discharge structure is provided, which is composed of a backscanning belt in the backscanning box, stirring blades in the mixing box, and a liquid supply pipe and a drain pipe cooperating with each other. Therefore, the key content of the present invention lies in: intelligently controlling the backscanning direction of the backscanning belt in the backscanning box, the stirring degree of the stirring blades in the mixing box, and the waste water supply and discharge speed in the liquid supply pipe and the drain pipe to jointly achieve on-demand treatment during the waste water reuse process, avoid the non-directional conduction of stains on the waste water liquid surface after cleaning, and further prevent the waste water after cleaning from being unable to be fully utilized;

[0019] 2. The waste water for cleaning waste printed circuit boards is stored in a waste liquid barrel, injected into the mixing box through a liquid supply mechanism and stirred synchronously. The waste water is discharged to different positions in the backscanning box through the first external drain pipe and the second external drain pipe respectively, and then the chain gear driven by the driving structure drives the backscanning belt to complete rotations in different directions, so that the waste water in the backscanning box flows internally in different directions, which is beneficial to the stratification and screening of stains in the waste water; during the mixing process, the waste water injected into the mixing box is divided into two areas, and the waste water in the two areas is automatically distinguished by the inclined bottom plate and is simultaneously stirred by different stirring effects of the stirring blades to complete the corresponding stirring and mixing, so as to facilitate the subsequent stratified utilization of the waste water; during the backscanning process, the same group of chain gears drives the backscanning belt to complete the steering adjustment, and during the backscanning process, the underwater disturbance is combined with the surface sweeping to jointly achieve the directional conduction of stains in the waste water, so as to achieve precise screening when the waste water reuse process completes the recovery and utilization of waste water stains. Description of the Drawings

[0020] 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 the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a device for treating and recycling waste water for cleaning waste printed circuit boards proposed by the present invention;

[0022] Figure 2Rear view structure diagram of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0023] Figure 3 Structure diagram of the backscanning mechanism of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0024] Figure 4 Side view cross-section of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0025] Figure 5 Cross-sectional view of the liquid delivery mechanism of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0026] Figure 6 Structure diagram of the liquid collecting tank of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0027] Figure 7 Side view of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention;

[0028] Figure 8 Installation schematic diagram of the backscanning belt of a waste printed circuit board cleaning wastewater recycling and treatment device proposed by the present invention.

[0029] In the figure: 1. Liquid collecting tank; 2. Mixing box; 3. Backscanning box; 4. Waste liquid bucket; 5. Partition board; 6. Liquid outlet pipe; 7. Liquid delivery mechanism; 8. Support rod; 9. Blowing roller; 10. Rotating rod; 11. Chain gear; 12. Backscanning belt; 13. Stirring blade; 14. Liquid delivery pipe; 15. Angle plate; 16. Inner runner; 17. Drain valve; 18. Slant bottom plate; 19. Lower through hole; 20. Upper through hole; 21. Motor; 22. Turbulence plate; 23. Outer discharge pipe 1; 24. Outer discharge pipe 2; 25. Frame; 26. Drain pipe; 27. Spiral belt; 28. Water pump; 29. Lower delivery pipe; 30. Hanging rod; 31. Photoelectric sensor. Detailed implementation manners

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Aiming at the technical problem that the stain cleaning process of waste printed circuit boards does not have intelligent control and cannot adjust the water temperature and liquid level values of waste printed circuit boards accordingly, the following technical solutions are proposed:

[0032] Refer to Figure 1 -Figure 8 As shown, in this embodiment, a waste printed circuit board cleaning wastewater recycling and treatment device includes a liquid collecting tank 1 and a mixing tank 2 arranged on a frame. A waste liquid bucket 4 for wastewater replenishment is arranged outside the mixing tank 2. On both sides of the upper end of the liquid collecting tank 1, a backwashing tank 3 is arranged in communication. The mixing tank 2 is separated into two areas by a middle partition plate 5, and an inclined bottom plate 18 is installed at the bottom of the mixing tank 2 corresponding to the partition plate 5. The mixing tank 2 is respectively provided with an outer discharge pipe 23 and an outer discharge pipe 24 communicating with the backwashing tank 3 through the two areas. A backwashing mechanism for wastewater screening is installed between the inner sides of the backwashing tank 3;

[0033] The backwashing mechanism includes symmetrically arranged rotating rods 10. A number of chain gears 11 are sleeved outside the rotating rods 10. A backwashing belt 12 extending into the interior of the backwashing tank 3 is jointly sleeved outside a pair of chain gears 11. During the backwashing process, the same group of chain gears 11 drives the backwashing belt 12 to complete steering adjustment, and during the backwashing process, underwater disturbance is combined with surface sweeping to jointly achieve the directional conduction of stains in the wastewater, so as to achieve precise screening when the wastewater stains are recycled and utilized during the wastewater recycling process;

[0034] The waste liquid bucket 4 is externally connected with a liquid feeding mechanism 7. A photoelectric sensor 31 corresponding to the discharge ends of the backwashing tank 3 and the waste liquid bucket 4 is installed on one side of the upper end of the mixing tank 2. The photoelectric sensor 31 measures the water levels at the wastewater discharge ends of the mixing tank 2, the backwashing tank 3, and the liquid feeding mechanism 7. During the mixing process, the wastewater injected into the mixing tank 2 is divided into two areas, and the wastewater in the two areas is automatically distinguished by the inclined bottom plate 18 and is simultaneously stirred and mixed by different stirring effects of the stirring blades 13 to facilitate subsequent stratified utilization of the wastewater;

[0035] Refer to Figure 5 As shown, the liquid feeding mechanism 7 includes a liquid feeding pipe 14 communicating with the waste liquid bucket 4 and a frame 25. The frame 25 is installed on one side of the upper end of the mixing tank 2. A drain pipe 26 sleeved outside the mixing tank 2 is installed on the frame 25. A water pump 28 is installed on the top of the frame 25. A lower feeding pipe 29 facing the interior of the mixing tank 2 is installed through the upper inner side of the drain pipe 26. Spiral belts 27 are inserted into the interiors of the liquid feeding pipe 14 and the drain pipe 26. The spiral belts 27 are heating belts and are connected to an electric heater;

[0036] When the wastewater after cleaning is injected into the mixing tank 2 through the liquid feeding pipe 14 and the drain pipe 26, it is first preheated as needed through the spiral belt 27, and intelligent temperature control adjustment is performed during the preheating, so that the wastewater after cleaning enters the mixing tank 2 in a suitable temperature state, thus facilitating the neutralization treatment process;

[0037] Refer to Figure 3 and Figure 6As shown, angle plates 15 are installed on both sides of the upper end of the liquid collecting tank 1. A hanging rod 30 is installed between a pair of angle plates 15. Both ends of the rotating rod 10 are rotatably installed on the hanging rod 30. The upper outer sides of the angle plates 15 extend to the upper end of the backscanning belt 12. Inner rotating wheels 16 are installed at both ends of the rotating rod 10. One end of the liquid collecting tank 1 is installed with a blowing roller 9 whose axis is horizontally aligned with that of the rotating rod 10. Blowing slits are formed on the blowing roller 9. After the backscanning is completed, the stains on the surface of the wastewater are blown by the blowing slits of the blowing roller 9, and finally the stains on the surface of the cleaning wastewater are collected.

[0038] Referring to Figure 4 As shown, a number of flow disturbing plates 22 are arrayed at one end inside the backscanning box 3. The flow disturbing plates 22 are located between two adjacent backscanning belts 12 and are inclined. Combined with the rotating action of the return belts 12 in different directions in the backscanning box 3, the turbulance of the waste printed circuit board cleaning wastewater is jointly realized.

[0039] Referring to Figure 2 and 4 As shown, upper through holes 20 and lower through holes 19 are respectively formed in the middle and lower sides of the partition plate 5. The first outer discharge pipe 23 is installed at the position corresponding to the lower through hole 19 on the inclined bottom plate 18. The second outer discharge pipe 24 is installed at the upper side position corresponding to the bottom of the inclined bottom plate 18 of the mixing box 2. A support rod 8 is installed in the middle inside the mixing box 2. A motor 21 is installed on the support rod 8. The output end of the motor 21 is installed with a stirring blade 13 facing the inside of the mixing box 2.

[0040] Basic principle: The waste printed circuit board cleaning wastewater is stored in the waste liquid barrel 4, injected into the mixing box 2 through the liquid delivery mechanism 7 and stirred synchronously. The wastewater is discharged to different positions in the backscanning box 3 through the first outer discharge pipe 23 and the second outer discharge pipe 24 respectively, and then the chain gear 11 driven by the driving structure drives the backscanning belt 12 to complete rotation in different directions, so that the wastewater in the backscanning box 3 flows internally in different directions, which is beneficial to the stratification and screening of the stains in the wastewater.

[0041] Specifically: During the mixing process, the wastewater injected into the mixing box 2 is divided into two areas, and the wastewater in the two areas is automatically distinguished by the inclined bottom plate 18 and is synchronously stirred and mixed under the different stirring effects of the stirring blade 13 to facilitate the subsequent stratified utilization of the wastewater; during the backscanning process, the same group of chain gears 11 drives the backscanning belt 12 to complete the steering adjustment, and during the backscanning process, the underwater disturbance is combined with the surface sweeping to jointly realize the directional conduction of the stains in the wastewater, so as to achieve precise screening when the wastewater reuse process completes the recovery and utilization of the wastewater stains.

[0042] The operation mechanism of wastewater reuse in this embodiment is basically the same as that of conventional waste printed circuit board cleaning equipment. The difference lies in that a wastewater backscanning supply and discharge structure is provided in this embodiment. The wastewater backscanning supply and discharge structure is composed of a backscanning belt 12 in a backscanning box 3, a stirring blade 13 in a mixing box 2, a liquid supply pipe 14, and a liquid discharge pipe 26 cooperating with each other. Therefore, combining the key content of the present invention above, it lies in: intelligently controlling the backscanning direction of the backscanning belt 12 in the backscanning box 3, the stirring degree of the stirring blade 13 in the mixing box 2, and the wastewater supply and discharge speed in the liquid supply pipe 14 and the liquid discharge pipe 26 to jointly achieve on-demand treatment in the process of wastewater reuse treatment, avoid the non-directional conduction of stains on the wastewater liquid surface after cleaning, and further prevent the insufficient utilization of the wastewater after cleaning.

[0043] Embodiment 2: This embodiment further intelligently optimizes based on the reuse treatment process in Embodiment 1:

[0044] It includes a photoelectric sensor 31 externally connected to an industrial control system. The industrial control system includes a data acquisition module, a liquid level temperature difference control module, and a signal execution module;

[0045] The data acquisition module is used to obtain the wastewater liquid level value and the supply and discharge temperature value during the cleaning of waste printed circuit boards. The wastewater liquid level value includes the liquid level heights of the cleaning wastewater in the middle parts of the mixing box 2 and the backscanning box 3 and is marked as FYz. The supply and discharge temperature value includes the temperature values of the cleaning wastewater passing through the inside and outside of the mixing box 2 and is marked as GPt;

[0046] The data acquisition module sends the wastewater liquid level value FYz and the supply and discharge temperature value GPt to the data analysis module, and generates the average wastewater liquid level and the average supply and discharge temperature. Combining the average wastewater liquid level and the average supply and discharge temperature, a calculation formula for the reuse treatment value HC is constructed as HC = a×FYz + b×GPt, where a and b are preset proportionality coefficients and a > b > 0. Then, the reuse treatment value is compared and analyzed with the preset reuse treatment threshold. If the reuse treatment value is greater than or equal to the reuse treatment threshold, a reuse normal treatment signal is generated. If the reuse treatment value is less than the reuse treatment threshold, a reuse abnormal treatment signal is generated;

[0047] The data acquisition module sends the reuse normal treatment signal and the reuse abnormal treatment signal to the signal execution module. The signal execution module performs the following actions according to the received reuse normal treatment signal and reuse abnormal treatment signal:

[0048] Action 1: When receiving the reuse normal treatment signal, at this time, the motor 21 drives the stirring blade 13 to rotate at a preset speed, so as to complete the predetermined stirring effect on the wastewater in the two areas in the mixing box 2; at the same time, the wastewater in the backscanning box 3 is swept by the backscanning belt 12 in a preset direction, and the directional conduction of stains in the wastewater is realized by combining underwater disturbance and surface sweeping.

[0049] Action 2: When the reuse exception handling signal is received, at this time, the motor 21 drives the stirring blade 13 to rotate at a speed exceeding or lower than the preset speed, so as to achieve a compliant stirring effect on the wastewater in the two areas of the mixing tank 2; at the same time, the wastewater in the backscanning tank 3 is subjected to different backscanning directions of the backscanning belt 12, so as to jointly achieve the directional conduction of stains in the wastewater by underwater disturbance combined with surface sweeping under the conditions of inconsistent liquid level and temperature limitation.

[0050] Embodiment 3: Based on the content of Embodiment 2, the following wastewater reuse treatment method is formed, including the following steps:

[0051] Step 1: Partitioning, the cleaning wastewater enters the two areas in the mixing tank 2 through the liquid delivery mechanism 7, and after partitioning, the motor 21 drives the stirring blade 13 to complete stirring;

[0052] Step 2: Injection, the stirred wastewater is respectively injected into different areas in the backscanning tank 3 through the first discharge pipe 23 and the second discharge pipe 24;

[0053] Step 3: Backscanning, the backscanning direction is determined by the wastewater temperature and liquid level values, and the drive structure drives the chain gear 11 and the backscanning belt 12 to complete rotations in different directions and at different speeds, so as to achieve different underwater disturbance effects on the wastewater in the backscanning tank 3;

[0054] Step 4: Blowing, the blowing seam of the blowing roller 9 is used to blow the stains on the surface of the wastewater, and finally the stains on the surface of the cleaning wastewater are collected;

[0055] Step 5: Centralized treatment, it is collected by the liquid collecting tank 1 and then processed as needed.

[0056] In summary: Combining Embodiments 1, 2 and 3, it can be seen that the key content of the present invention lies in: jointly realizing the on-demand treatment in the wastewater reuse treatment process by intelligently controlling the backscanning direction of the backscanning belt 12 in the backscanning tank 3, the stirring degree of the stirring blade 13 in the mixing tank 2, and the wastewater supply and discharge speeds in the liquid supply pipe 14 and the drain pipe 26, avoiding the non-directional conduction of stains on the liquid surface of the wastewater after cleaning, and further preventing the insufficient utilization of the wastewater after cleaning; and during the mixing process, the wastewater injected into the mixing tank 2 is divided into two areas, and the wastewater in the two areas is automatically distinguished by the inclined bottom plate 18, and is simultaneously subjected to different stirring effects of the stirring blade 13 to complete the corresponding stirring and mixing, so as to facilitate the subsequent stratified utilization of the wastewater; during the backscanning process, the same group of chain gears 11 drives the backscanning belt 12 to complete the steering adjustment, and jointly realizes the directional conduction of stains in the wastewater by underwater disturbance combined with surface sweeping during the backscanning process, so as to achieve precise screening when the wastewater reuse process completes the recovery and utilization of wastewater stains.

[0057] The above formulas are all obtained by collecting a large amount of data for software simulation and selecting a formula close to the true value. The coefficients in the formula are set by those skilled in the art according to the actual situation. 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 person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

[0058] In the description of this specification, the description with reference to terms such as "an embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate on all the details, nor do they limit the present invention to only the specific embodiments.

Claims

1. A waste printed circuit board cleaning wastewater reuse treatment device, comprising a liquid collecting tank (1) and a mixing tank (2) arranged on a frame, wherein a waste liquid barrel (4) for wastewater supply is arranged outside the mixing tank (2), and is characterized in that: On both sides of the upper end of the liquid collecting tank (1), there are connected backwashing boxes (3). The mixing box (2) is divided into two areas by a middle partition plate (5), and an inclined bottom plate (18) is installed at the bottom of the mixing box (2) corresponding to the partition plate (5). The mixing box (2) is respectively provided with an outer discharge pipe one (23) and an outer discharge pipe two (24) communicating with the backwashing box (3) through the two areas. A backwashing mechanism for waste water screening is installed between the inner sides of the backwashing box (3). The backwashing mechanism includes symmetrically arranged rotating rods (10). A number of chain gears (11) are sleeved outside the rotating rods (10). A pair of the chain gears (11) are jointly sleeved with a backwashing belt (12) extending into the interior of the backwashing box (3). The waste liquid barrel (4) is externally connected with a liquid feeding mechanism (7). A photoelectric sensor (31) corresponding to the discharge ends of the backwashing box (3) and the waste liquid barrel (4) is installed on one side of the upper end of the mixing box (2).

2. The waste circuit board cleaning wastewater recycling and treatment device according to claim 1, characterized in that, The liquid feeding mechanism (7) includes a liquid feeding pipe (14) communicating with the waste liquid barrel (4) and a frame (25). The frame (25) is installed on one side of the upper end of the mixing box (2). A discharge pipe (26) sleeved outside the mixing box (2) is installed on the frame (25). A water pump (28) is installed at the top of the frame (25). A lower feeding pipe (29) facing the interior of the mixing box (2) is installed through the inner side of the upper end of the discharge pipe (26).

3. The waste printed circuit board cleaning wastewater reuse treatment device according to claim 2, characterized in that, Spiral belts (27) are inserted into the interiors of the liquid feeding pipe (14) and the discharge pipe (26). The spiral belts (27) are heating belts and are connected to electric heaters.

4. The waste circuit board cleaning wastewater recycling and treatment device according to claim 1, characterized in that, Angle plates (15) are installed on both sides of the upper end of the liquid collecting tank (1). A hanging rod (30) is installed between a pair of the angle plates (15). The two ends of the rotating rod (10) are jointly rotatably installed on the hanging rod (30). The outer upper ends of the angle plates (15) extend to the upper end of the backwashing belt (12).

5. The waste printed circuit board cleaning wastewater reuse treatment device according to claim 4, characterized in that, Inner rotating wheels (16) are installed at both ends of the rotating rod (10). A blowing roller (9) horizontally aligned with the axis position of the rotating rod (10) is installed at one end of the liquid collecting tank (1). Blowing slits are formed in the blowing roller (9).

6. A waste printed circuit board cleaning wastewater recycling and treatment device according to claim 1, characterized in that, Upper through holes (20) and lower through holes (19) are respectively formed in the middle and the lower side of the partition plate (5). The outer discharge pipe one (23) is installed at a position corresponding to the lower through hole (19) on the inclined bottom plate (18). The outer discharge pipe two (24) is installed at a position on the upper side of the bottom of the mixing box (2) corresponding to the inclined bottom plate (18).

7. The waste printed circuit board cleaning wastewater reuse treatment device according to claim 6, characterized in that, A support rod (8) is installed in the middle of the inner side of the mixing box (2). A motor (21) is installed on the support rod (8). A stirring blade (13) facing the interior of the mixing box (2) is installed at the output end of the motor (21).

8. A waste printed circuit board cleaning wastewater reuse treatment device according to claim 1, characterized in that, The photoelectric sensor (31) is externally connected to an industrial control system, and the industrial control system includes a data acquisition module, a liquid level and temperature difference control module, and a signal execution module; the data acquisition module is used to obtain the waste water liquid level value and the supply and discharge temperature value during the cleaning of waste printed circuit boards. The waste water liquid level value includes the liquid level height of the cleaning waste water in the middle of the mixing tank (2) and the backscanning tank (3), which is marked as FYz. The supply and discharge temperature value includes the temperature values of the cleaning waste water inside and outside the mixing tank (2), which is marked as GPt. The data acquisition module sends the waste water liquid level value FYz and the supply and discharge temperature value GPt to the data analysis module, generates the average waste water liquid level value and the average supply and discharge temperature value, constructs a calculation formula for the reuse treatment value by combining the average waste water liquid level value and the average supply and discharge temperature value, and compares and analyzes the reuse treatment value with a preset reuse treatment threshold. If the reuse treatment value is greater than or equal to the reuse treatment threshold, a normal reuse treatment signal is generated. If the reuse treatment value is less than the reuse treatment threshold, an abnormal reuse treatment signal is generated. The data acquisition module sends the normal reuse treatment signal and the abnormal reuse treatment signal to the signal execution module, and the signal execution module performs relevant actions according to the received normal reuse treatment signal and abnormal reuse treatment signal.

Images