Circuit board film removing and filtering system

Abstract

The invention discloses a circuit board film removing and filtering system which comprises a circuit board film removing device, a film residue filtering device, a secondary recycling device, a multi-stage filtering device and a liquid medicine circulating device. The film residue filtering device is connected with the circuit board film removing device so as to receive a mixture of liquid medicine and film residues output by the circuit board film removing device; the film residue filtering device is used for separating liquid medicine and film residues, conveying the separated liquid medicine to the multi-stage filtering device and conveying the separated film residues to the secondary recycling device; the secondary recovery device is used for separating residual liquid medicine on the film residues and conveying the separated liquid medicine to the multi-stage filtering device; the multi-stage filtering device is used for performing multiple filtering on the liquid medicine; the liquid medicine circulating device is connected with the multi-stage filtering device and the circuit board film removing device, and is used for conveying the liquid medicine subjected to multiple filtering to the circuit board film removing device. The reutilization rate of the liquid medicine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board manufacturing, in particular to a circuit board film stripping and filtering system. Background Art

[0002] In the existing circuit board processing process, it is often necessary to use chemicals to remove the film from the circuit board. Usually, the chemicals are sprayed on the surface of the circuit board to make the circuit board and the chemicals react chemically. The unreacted chemicals and the film residues produced by the reaction will be mixed together. In order to improve the utilization rate of the chemicals, the chemicals are generally separated through a filtering device.

[0003] For example, the Chinese invention patent with publication number CN216395479U discloses a circuit board production wastewater recovery and treatment device, which can effectively filter out the membrane residue in the medicine solution. However, the membrane residue itself still has a lot of medicine solution attached to it. If the filtered membrane residue is directly discarded, part of the medicine solution will be wasted, which reduces the reuse rate of the medicine solution. Summary of the invention

[0004] The invention provides a circuit board film stripping and filtering system, which can improve the recycling rate of medicine solution.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] An embodiment of the present invention provides a circuit board film stripping and filtering system, comprising a circuit board film stripping device, a film residue filtering device, a secondary recovery device, a multi-stage filtering device and a medicine solution circulation device; the membrane residue filtering device is connected to the circuit board film stripping device to receive a mixture of medicine solution and film residue output by the circuit board film stripping device; the membrane residue filtering device is used to separate the medicine solution and the film residue, and convey the separated medicine solution to the multi-stage filtering device, and also convey the separated film residue to the secondary recovery device; the secondary recovery device is used to separate the medicine solution remaining on the film residue, and convey the separated medicine solution to the multi-stage filtering device; the multi-stage filtering device is used to perform multiple filtrations on the medicine solution; the medicine solution circulation device is connected to both the multi-stage filtering device and the circuit board film stripping device, and is used to convey the medicine solution after multiple filtrations to the circuit board film stripping device.

[0007] In some embodiments, the membrane residue filtering device includes an outer shell, a filter drum, a driving assembly and a receiving hopper; the filter drum is arranged in the outer shell and is rotatably connected to the outer shell, the driving assembly is connected to the filter drum and is used to drive the filter drum to rotate; the circumferential surface of the filter drum is provided with a plurality of filter holes penetrating through it, the outer shell is provided with a receiving groove, the receiving groove is located below the filter drum for receiving the medicine flowing out of the filter holes; the surface of the shell is provided with a membrane residue outlet, a medicine outlet connected to the receiving groove and a feed pipe connected to the inner cavity of the filter drum; the receiving hopper extends into the filter drum for receiving the membrane residue falling from the upper part of the filter drum, the receiving hopper includes a discharge portion for allowing the membrane residue to slide out, and the discharge portion extends out of the outer shell through the membrane residue outlet.

[0008] In some embodiments, a plurality of baffle plates are provided on the inner peripheral wall of the filter drum.

[0009] In some embodiments, a blowing device is disposed on the outside of the filter drum, and the blowing device is disposed on the top of the filter drum and is used to blow air toward the top of the filter drum.

[0010] In some embodiments, a water spraying device is fixed on the outer shell, and the water spraying device is used to spray water toward the inner wall of the filter drum.

[0011] In some embodiments, the secondary recovery device includes a sedimentation box, a liquid pumping pipeline and a first liquid pumping pump. The sedimentation box is used to receive the membrane residue separated by the membrane residue filtration device. One end of the liquid pumping pipeline extends into the sedimentation box, and the other end is connected to the multi-stage filtration device. The first liquid pump is arranged in the liquid pumping pipeline and is used to pump the medicine in the sedimentation box to the multi-stage filtration device.

[0012] In some embodiments, the secondary recovery device further comprises a spraying assembly disposed in the sedimentation box, and the spraying assembly is used to spray water onto the inner wall of the sedimentation box.

[0013] In some embodiments, a membrane residue dehydration device is also included, and a dehydration connecting pipe connected to the membrane residue dehydration device is provided at the bottom of the sedimentation box, and a control valve is provided in the dehydration connecting pipe; the membrane residue dehydration device is used to receive the membrane residue transported through the dehydration connecting pipe and dehydrate the membrane residue.

[0014] In some embodiments, the membrane residue dehydration device includes a dehydration trough, a membrane residue conveying assembly, a water collecting trough and a collecting box; one end of the dehydration trough is connected to the dehydration connecting pipe, and a membrane residue output pipe is provided at the bottom of the other end; the membrane residue conveying assembly is arranged in the dehydration trough and is used to convey the membrane residue in the dehydration trough to the membrane residue output pipe, and the membrane residue output pipe is connected to the collecting box; a drainage hole is provided at the bottom of the dehydration trough, and the water collecting trough is located below the dehydration trough.

[0015] In some embodiments, the multi-stage filtration device comprises a primary filter and two secondary filters, the primary filter, one of the secondary filters and the other secondary filter are connected in sequence, and the membrane residue filtration device and the secondary recovery device are both connected to the primary filter.

[0016] The present invention has at least the following beneficial effects: the film residue filtering device of the present invention can separate the medicine solution and the film residue from the mixture of the medicine solution and the film residue output by the circuit board film stripping device, the secondary recovery device can then separate the medicine solution remaining on the film residue, the multi-stage filtering device can perform multiple filtrations on the medicine solution separated by the film residue filtering device and the secondary recovery device, the medicine solution circulation device can then transport the medicine solution after multiple filtrations to the circuit board film stripping device, so that the circuit board film stripping device can recycle the medicine solution; since the present invention can recycle the medicine solution remaining on the separated film residue, this reduces the waste of the medicine solution and improves the reuse rate of the medicine solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a circuit board film stripping and filtering system according to an embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of a membrane slag filtering device according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A schematic cross-sectional view taken along section line AA in FIG.

[0020] Figure 4 This is a schematic structural diagram of a membrane residue filtering device according to an embodiment of the present invention after a portion of the outer shell is removed;

[0021] Figure 5 This is a schematic structural diagram of a membrane residue filtering device according to an embodiment of the present invention after removing part of the outer shell and the receiving hopper;

[0022] Figure 6 for Figure 5 The schematic structural diagram of the membrane residue filtering device shown in FIG. 1 is a schematic structural diagram of the membrane residue filtering device in another viewing angle;

[0023] Figure 7 It is a side view schematic diagram of a membrane residue filtering device, a secondary recovery device and a membrane residue dehydration device according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of a membrane residue filtering device and a sedimentation box after removing the top cover according to an embodiment of the present invention;

[0025] Fig. 9 A schematic cross-sectional view of a membrane slag dehydration device according to an embodiment of the present invention;

[0026] Fig.10A schematic diagram of the structure of a multi-stage filtering device according to an embodiment of the present invention;

[0027] Fig.11 The present invention is a schematic structural diagram of a liquid medicine circulation device and a circuit board film stripping device according to an embodiment of the present invention.

[0028] Wherein, the accompanying drawings are marked as follows:

[0029] Circuit board film stripping device 10;

[0030] Membrane residue filtering device 20, housing 100, receiving groove 110, bottom plate 111, feed pipe 101, liquid medicine outlet 102, residue outlet 103, support shaft 120, guide wheel 130; filter drum 200, filter hole 201, baffle plate 210; drive assembly 300, gear ring 310; receiving hopper 400, discharge part 410; blowing device 500; water spraying device 600, nozzle 610;

[0031] Secondary recovery device 30, sedimentation box 31, liquid extraction pipeline 32, spraying assembly 33, dehydration connecting pipe 34, control valve 35;

[0032] A multi-stage filtering device 40, a primary filter 41, a secondary filter 42, and a membrane residue discharge mechanism 43;

[0033] A liquid medicine circulation device 50, a circulation box 51, and a second liquid pump 52;

[0034] The membrane residue dehydration device 60 , the dehydration tank 61 , the membrane residue conveying assembly 62 , the water collecting tank 63 , the collecting box 64 , and the membrane residue output pipe 65 . DETAILED DESCRIPTION

[0035] The present invention provides the following description with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the present invention as defined by the claims and their equivalents. The description includes various specific details to assist in understanding, but these details should be considered as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present invention.

[0036] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0038] An embodiment of the present invention provides a circuit board film stripping and filtering system, such as Figure 1 As shown, it includes a circuit board film stripping device 10, a film residue filtering device 20, a secondary recovery device 30, a multi-stage filtering device 40 and a medicine water circulation device 50. The circuit board film stripping device 10 is used to spray medicine water on the circuit board to strip the circuit board. The film residue filtering device 20 is connected to the circuit board film stripping device 10. The circuit board film stripping device 10 will convey the mixture of the medicine water and the film residue after film stripping to the film residue filtering device 20. The film residue filtering device 20 separates the medicine water and the film residue in the mixture, and conveys the separated medicine water to the multi-stage filtering device 40, and also conveys the separated film residue to the secondary recovery device 30. Since the film residue still has medicine water, the secondary recovery device 30 is used to separate the medicine water remaining on the film residue, and convey the separated medicine water to the multi-stage filtering device 40; the multi-stage filtering device 40 is used to perform multiple filtrations on the medicine water separated by the film residue filtering device 20 and the secondary recovery device 30, so that the medicine water is cleaner. The liquid medicine circulation device 50 is connected to both the multi-stage filtering device 40 and the circuit board film stripping device 10. The liquid medicine circulation device 50 receives the liquid medicine after multiple filtrations and then transports the liquid medicine after multiple filtrations to the circuit board film stripping device 10 so that the liquid medicine can be circulated by the circuit board film stripping device 10. Since the liquid medicine remaining on the separated film residue is recycled in this embodiment, the waste of liquid medicine is reduced and the reuse rate of liquid medicine is improved.

[0039] Hereinafter, the specific structure of the membrane residue filtering device will be described.

[0040] In some embodiments, Figure 2-6 As shown, the membrane residue filtering device includes a housing 100, a filter drum 200, a driving assembly 300 and a receiving hopper 400. The filter drum 200 is arranged in the housing 100 and is rotatably connected to the housing 100. The driving assembly 300 is connected to the filter drum 200 and is used to drive the filter drum 200 to rotate. The circumferential surface of the filter drum 200 is provided with a plurality of filter holes 201 penetrating through it. The medicine can flow out of the filter drum 200 through the filter holes 201, and the residue cannot pass through the filter holes 201, so it stays in the filter drum 200. A receiving groove 110 is arranged in the housing 100. The receiving groove 110 is located below the filter drum 200. The medicine flowing out of the filter holes 201 will flow downward under the action of gravity, and the receiving groove 110 can receive the medicine flowing out of the filter holes 201.

[0041] The surface of the housing 100 is provided with a residue outlet 103, a medicine outlet 102 connected to the receiving groove 110, and a feed pipe 101 connected to the inner cavity of the filter drum 200. The mixture of medicine and residue enters the filter drum 200 through the feed pipe 101. After being filtered by the filter drum 200, the medicine can flow out through the filter hole 201, then fall into the receiving groove 110, and then flow out from the medicine outlet 102, while the residue stays in the filter drum 200, completing the separation of the medicine and the residue, and the medicine flowing out from the medicine outlet 102 can be reused.

[0042] The receiving hopper 400 extends into the filter drum 200. When the driving assembly 300 drives the filter drum 200 to rotate, the residue on the inner wall of the filter drum 200 will rotate to the upper part of the filter drum 200. In this position, the filter drum 200 is equivalent to being above the residue. Under the action of gravity, the residue will fall from the upper part of the filter drum 200 to the receiving hopper 400. The receiving hopper 400 can receive the residue falling from the upper part of the filter drum 200. At the same time, the receiving hopper 400 includes a discharge portion 410 for the residue to slide out. The discharge portion 410 extends out of the housing 100 through the residue outlet 103. When the residue in the receiving hopper 400 moves to the discharge portion 410, it can slide along the discharge portion 410 to move out of the filter drum 200. In this way, the residue in the filter drum 200 can be cleaned in time, the risk of the residue blocking the filter hole 201 can be reduced, and the filtering effect of the entire filtering device can be guaranteed.

[0043] In some embodiments, the discharge portion 410 can be set at the lowest point of the receiving hopper 400 so that the residue can slide toward the discharge portion 410 under the action of gravity. The discharge portion 410 can be an inclined circular tube, an inclined V-shaped plate or other structures.

[0044] In some embodiments, a plurality of baffle plates 210 are provided on the inner circumferential wall of the filter drum 200, and the baffle plates 210 serve to prevent residues from sliding along the inner circumference of the filter drum 200. In the process of the residues moving toward the upper part of the filter drum 200 along with the filter drum 200, the baffle plates 210 can drive more residues to move toward the upper part of the filter drum 200, so that the residues will not fall until they reach near the top position of the filter drum 200, but will not slide along the inner circumference of the filter drum 200 too early. In this way, more residues will fall into the receiving hopper 400, thereby reducing the residues remaining in the filter drum 200 and achieving a better cleaning effect on the residues.

[0045] In some embodiments, a blowing device 500 is disposed on the outside of the filter drum 200, and the blowing device 500 is disposed on the top of the filter drum 200 and is used to blow air toward the top of the filter drum 200. The airflow blown by the blowing device 500 can pass through the filter holes 201, and then blow off the residue remaining on the inner wall of the top of the filter drum 200, and the blown-off residue will fall into the receiving hopper 400, further reducing the residue remaining in the filter drum 200, and having a better cleaning effect on the residue.

[0046] In some embodiments, a water spray device 600 is fixed on the outer shell 100, and the water spray device 600 is used to spray water onto the inner wall of the filter drum 200 to loosen the residue on the inner wall of the filter drum 200 so that it will not be tightly attached to the inner wall of the filter drum 200. When the residue rotates to the upper part of the filter drum 200, the residue is easier to fall off, further reducing the residue remaining in the filter drum 200, and the residue cleaning effect is better.

[0047] Furthermore, the water spraying device 600 includes a water tank, a booster pump and a nozzle 610, which are connected in sequence. Water is stored in the water tank. The booster pump is used to pressurize the water to increase the impact of the water. The water then sprays out through the nozzle 610. The nozzle 610 is fixed on the outer shell 100 and is configured to face the inner wall of the filter drum 200. The water sprayed from the nozzle 610 can act on the inner wall of the filter drum 200 to flush the residue on the inner wall of the filter drum 200.

[0048] In some embodiments, a plurality of support shafts 120 extending along the axial direction of the filter drum 200 are fixed in the housing 100, and a guide wheel 130 that can rotate around the support shaft 120 is sleeved on the support shaft 120, and the support shaft 120 is distributed on the outer periphery of the filter drum 200, and the guide wheel 130 on the support shaft 120 abuts against the outer peripheral wall of the filter drum 200. This structure can realize the rotation connection between the filter drum 200 and the housing 100, and the guide wheel 130 provides support for the filter drum 200 and restricts the movement of the filter drum 200 relative to the housing 100 from the outer periphery, and when the filter drum 200 rotates, the guide wheel 130 also rotates with the filter drum 200 to reduce friction and make the rotation of the filter drum 200 smoother.

[0049] In some embodiments, the driving assembly 300 includes a driver, a gear and a gear ring 310. The gear ring 310 is annular, and its outer circumference or inner circumference is provided with a latching tooth adapted to the gear. The gear ring 310 is coaxially connected to the filter drum 200, and the gear meshes with the gear ring 310. The driver is connected to the gear and is used to drive the gear to rotate, and the gear drives the gear ring 310 to rotate, thereby rotating the filter drum 200. The driver can be a motor.

[0050] In some embodiments, the housing 100 includes a bottom plate 111 at the bottom thereof and a plurality of side plates at the sides thereof, and the side plates and the bottom plate 111 are enclosed to form a receiving groove 110. The filter drum 200 is disposed above the bottom plate 111, and a plurality of side plates are disposed around the filter drum 200. Even if liquid medicine is spilled onto the side plates, it will flow down along the side plates into the receiving groove 110, so that the receiving groove 110 can receive more liquid medicine.

[0051] Hereinafter, the specific structure of the secondary recovery device will be described.

[0052] In some embodiments, Figure 7-9 As shown, the secondary recovery device includes a sedimentation box 31, a liquid extraction pipeline 32 and a first liquid extraction pump. The sedimentation box 31 is used to receive the membrane residue separated by the membrane residue filtering device 20. Through the sedimentation and stratification method, the membrane residue is sunk to the bottom of the sedimentation box 31, and the medicine is located above the membrane residue. One end of the liquid extraction pipeline 32 extends into the sedimentation box 31, and the other end is connected to the multi-stage filtering device. The first liquid extraction pump is arranged in the liquid extraction pipeline 32 and is used to pump the medicine in the sedimentation box 31 to the multi-stage filtering device. Therefore, the secondary recovery device of this embodiment can separate the medicine remaining in the membrane residue so that the medicine can be further used.

[0053] In this embodiment, an opening may be provided at the top of the sedimentation box 31 , and the opening is docked with the receiving hopper of the above embodiment, so that the film residue sliding down from the receiving hopper can fall into the sedimentation box 31 .

[0054] Furthermore, the secondary recovery device also includes a spraying assembly 33 arranged in the sedimentation box 31, and the spraying assembly 33 is used to spray water onto the inner wall of the sedimentation box 31. On the one hand, this allows the film residue attached to the inner wall of the sedimentation box 31 to be washed to the bottom of the sedimentation box 31 to facilitate the deposition of the film residue. On the other hand, if the amount of medicine attached to the film residue is too small, it is not easy to form a layered structure through deposition. After flushing water into the sedimentation box 31, the amount of liquid can be increased, thereby making it easier to form layered medicine above the film residue for the liquid extraction pipeline 32 to extract it away. The diluted medicine can still be extracted through subsequent filtration, refining, etc.

[0055] In this embodiment, the spray assembly 33 may include a spray pipe and a plurality of spray heads fixed on the spray pipe, and the spray heads are arranged toward the inner wall of the sedimentation box 31 so as to spray water toward the inner wall of the sedimentation box 31 through the spray heads.

[0056] In some embodiments, Figure 1 , Figure 7 and Fig. 9As shown, the circuit board film removal and filtration system also includes a film residue dehydration device 60. A dehydration connection pipe 34 connected to the film residue dehydration device 60 is provided at the bottom of the sedimentation box 31, and a control valve 35 is provided in the dehydration connection pipe 34. When the control valve 35 is closed, the film residue will not fall into the film residue dehydration device 60 through the dehydration connection pipe 34. When the control valve 35 is opened, the film residue can fall into the film residue dehydration device 60 through the dehydration connection pipe 34. The film residue dehydration device 60 is used to receive the film residue transported through the dehydration connection pipe 34 and dehydrate the film residue, so that the film residue remains dry for subsequent transportation or treatment.

[0057] Furthermore, the film residue dehydration device 60 includes a dehydration trough 61, a film residue conveying assembly 62, a water collecting trough 63 and a collecting box 64. One end of the dehydration trough 61 is docked with the dehydration connecting pipe 34, so that the film residue falls into the dehydration trough 61 through the dehydration connecting pipe 34, and a film residue output pipe 65 is arranged at the bottom of the other end of the dehydration trough 61; the film residue conveying assembly 62 is arranged in the dehydration trough 61 and is used to convey the film residue in the dehydration trough 61 to the film residue output pipe 65, so that the film residue can fall out of the dehydration trough 61 through the film residue output pipe 65, and the film residue output pipe 65 is docked with the collecting box 64, and the collecting box 64 can collect the film residue. A drainage hole is arranged at the bottom of the dehydration trough 61, and the water collecting trough 63 is located below the dehydration trough 61. In the process of conveying the film residue to the film residue output pipe 65, the residual water on the film residue can fall down through the drainage hole, and then drip into the water collecting trough 63 to collect the water. The film residue that falls into the collection box 64 remains relatively dry.

[0058] In this embodiment, the film slag conveying assembly 62 can be a screw conveying assembly.

[0059] In some embodiments, Fig.10 As shown, the multi-stage filtration device includes a primary filter 41 and two secondary filters 42, the primary filter 41, one of the secondary filters 42 and the other secondary filter 42 are connected in sequence, and the membrane residue filtration device and the secondary recovery device are both connected to the primary filter 41. The primary filter 41 is used to perform the initial filtration of the medicine to remove the small particles of residue in the medicine so that the medicine remains clean. The secondary filter 42 can refine the medicine to increase the concentration of the medicine. The secondary filter 42 can also remove other impurities in the medicine by reaction, adsorption and other methods, so that the medicine will be cleaner.

[0060] The multi-stage filtering device may further include a membrane residue discharge mechanism 43 for discharging membrane residues filtered out by the primary filter 41 and the secondary filter 42 to avoid clogging of the primary filter 41 and the secondary filter 42 .

[0061] In some embodiments, Fig.11As shown, the medicine circulation device may include a circulation box 51 and a second liquid pump 52. The output end of the multi-stage filtration device is connected to the circulation box 51, so that the medicine after multiple filtration is temporarily stored in the circulation box 51. The second liquid pump 52 pumps the medicine in the circulation box 51 to the circuit board film stripping device 10 to realize the recycling of the medicine.

[0062] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present invention is provided only for illustration, and not for limiting the present invention as defined by the attached claims and their equivalents.

Claims

1. A circuit board film stripping and filtering system, characterized in that: It includes a circuit board film stripping device, a film residue filtering device, a secondary recovery device, a multi-stage filtering device and a medicine solution circulation device; the membrane residue filtering device is connected to the circuit board film stripping device to receive a mixture of medicine solution and film residue output by the circuit board film stripping device; the membrane residue filtering device is used to separate the medicine solution and the film residue, and convey the separated medicine solution to the multi-stage filtering device, and also convey the separated film residue to the secondary recovery device; the secondary recovery device is used to separate the medicine solution remaining on the film residue, and convey the separated medicine solution to the multi-stage filtering device; the multi-stage filtering device is used to perform multiple filtrations on the medicine solution; the medicine solution circulation device is connected to both the multi-stage filtering device and the circuit board film stripping device, and is used to convey the medicine solution after multiple filtrations to the circuit board film stripping device.

2. The circuit board film stripping and filtering system according to claim 1, characterized in that: The membrane residue filtering device comprises an outer shell, a filter drum, a driving assembly and a receiving hopper; the filter drum is arranged in the outer shell and is rotatably connected to the outer shell, the driving assembly is connected to the filter drum and is used to drive the filter drum to rotate; the circumferential surface of the filter drum is provided with a plurality of filter holes penetrating through it, the outer shell is provided with a receiving groove, the receiving groove is located below the filter drum for receiving the medicine flowing out of the filter holes; the surface of the shell is provided with a membrane residue outlet, a medicine outlet connected to the receiving groove and a feed pipe connected to the inner cavity of the filter drum; the receiving hopper extends into the filter drum for receiving the membrane residue falling from the upper part of the filter drum, the receiving hopper comprises a discharge part for allowing the membrane residue to slide out, and the discharge part extends out of the outer shell through the membrane residue outlet.

3. The circuit board film stripping and filtering system according to claim 2, characterized in that: A plurality of material blocking plates are arranged on the inner peripheral wall of the filter drum.

4. The circuit board film stripping and filtering system according to claim 2, characterized in that: The outside of the filter drum is provided with a blowing device, and the blowing device is arranged on the top of the filter drum and is used for blowing air toward the top of the filter drum.

5. The circuit board film stripping and filtering system according to claim 2, characterized in that: A water spray device is fixed on the shell, and the water spray device is used to spray water toward the inner wall of the filter drum.

6. The circuit board film stripping and filtering system according to any one of claims 1 to 5, characterized in that: The secondary recovery device includes a sedimentation box, a liquid pumping pipeline and a first liquid pumping pump. The sedimentation box is used to receive the membrane residue separated by the membrane residue filtering device. One end of the liquid pumping pipeline extends into the sedimentation box, and the other end is connected to the multi-stage filtering device. The first liquid pump is arranged in the liquid pumping pipeline and is used to pump the medicine in the sedimentation box to the multi-stage filtering device.

7. The circuit board film stripping and filtering system according to claim 6, characterized in that: The secondary recovery device also includes a spraying assembly arranged in the sedimentation box, and the spraying assembly is used to spray water onto the inner wall of the sedimentation box.

8. The circuit board film stripping and filtering system according to claim 6, characterized in that: It also includes a membrane residue dehydration device. A dehydration connecting pipe connected to the membrane residue dehydration device is provided at the bottom of the sedimentation box, and a control valve is provided in the dehydration connecting pipe. The membrane residue dehydration device is used to receive the membrane residue transported through the dehydration connecting pipe and dehydrate the membrane residue.

9. The circuit board film stripping and filtering system according to claim 8, characterized in that: The membrane residue dehydration device comprises a dehydration trough, a membrane residue conveying assembly, a water collecting trough and a collecting box; one end of the dehydration trough is connected to the dehydration connecting pipe, and a membrane residue output pipe is arranged at the bottom of the other end; the membrane residue conveying assembly is arranged in the dehydration trough and is used to convey the membrane residue in the dehydration trough to the membrane residue output pipe, and the membrane residue output pipe is connected to the collecting box; a drainage hole is arranged at the bottom of the dehydration trough, and the water collecting trough is located below the dehydration trough.

10. The circuit board film stripping and filtering system according to any one of claims 1 to 5, characterized in that: The multi-stage filtering device comprises a primary filter and two secondary filters, the primary filter, one of the secondary filters and the other secondary filter are connected in sequence, and the membrane residue filtering device and the secondary recovery device are both connected to the primary filter.

Images