Drum-type filter for removing film from circuit board
The roll-type filter system addresses residue blockages in line board manufacturing by using a rotating cylinder with integrated cleaning mechanisms to maintain filtration efficiency.
Patent Information
- Application Number
- CN202421948143.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-12
AI Technical Summary
In the existing circuit board membrane defiler filter, residues are prone to adhere to the filter net, causing the filter net to be blocked and affecting the filtration effect.
The roller filter is used to separate the potion and residue by rotating the filter drum. The residue is dropped from the upper part of the roller into the hopper by gravity. The residue is further cleaned up with the blowing air and water spraying device to ensure the filtration effect.
The timely separation of potions and residues is achieved, the risk of residues blocking the filter holes is reduced, and the continuous and efficient operation of the filter is ensured.
Smart Images
Figure CN223096292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printed circuit board processing, in particular to a drum - type filter for printed circuit board film stripping. Background Art
[0002] During the processing of printed circuit boards, a chemical solution is used to strip the film from the printed circuit boards. After the treatment, the unreacted chemical solution and residues are mixed together. To improve the utilization rate of the chemical solution, the mixture of the unreacted chemical solution and residues is generally filtered to remove the residues. The existing filters adopt a traditional filter mesh structure. The residues adhere to the filter mesh and cannot be cleaned in time. After being used for a period of time, the filter mesh will be blocked, affecting the filtering effect. Content of the Utility Model
[0003] The utility model provides a drum - type filter for printed circuit board film stripping, which can clean the filtered residues in time and ensure the filtering effect.
[0004] To solve the above problems, the utility model adopts the following technical solutions:
[0005] An embodiment of the utility model provides a drum - type filter for printed circuit board film stripping, which includes a housing, a filter drum, a driving component and a material receiving hopper; the filter drum is arranged in the housing and is rotatably connected with the housing, the driving component is connected with the filter drum and is used to drive the filter drum to rotate; a plurality of filter holes penetrating through the filter drum are arranged on the circumferential surface of the filter drum, a receiving groove is arranged in the housing, and the receiving groove is located below the filter drum to receive the chemical solution flowing out from the filter holes; a residue outlet, a chemical solution outlet communicated with the receiving groove and a feed pipe communicated with the inner cavity of the filter drum are arranged on the surface of the housing; the material receiving hopper extends into the filter drum to receive the residues falling from the upper part of the filter drum, and the material receiving hopper includes a discharging part for the residues to slide out, and the discharging part extends out of the housing through the residue outlet.
[0006] In some embodiments, a plurality of baffle plates are arranged on the inner peripheral wall of the filter drum.
[0007] In some embodiments, a blowing device is arranged outside the filter drum, and the blowing device is arranged at the top of the filter drum and is used to blow air towards the top of the filter drum.
[0008] In some embodiments, a water spraying device is fixed on the housing, and the water spraying device is used to spray water towards the inner wall of the filter drum.
[0009] In some embodiments, the water spraying device includes a water tank, a booster pump and a nozzle, the water tank, the booster pump and the nozzle are connected in sequence, and the nozzle is fixed on the housing and is configured to face the inner wall of the filter drum.
[0010] In some embodiments, a plurality of support shafts extending along the axial direction of the filter drum are fixed inside the outer shell. Guide wheels that can rotate around the support shafts are sleeved on the support shafts. The support shafts are distributed on the outer periphery of the filter drum, and the guide wheels on the support shafts abut against the outer peripheral wall of the filter drum.
[0011] In some embodiments, the drive assembly includes a driver, a gear, and a toothed ring. The toothed ring is coaxially connected to the filter drum. The gear meshes with the toothed ring. The driver is connected to the gear and is used to drive the gear to rotate.
[0012] In some embodiments, the outer shell includes a bottom plate at its bottom and a plurality of side plates at its sides. The side plates and the bottom plate enclose to form the receiving groove.
[0013] The utility model has at least the following beneficial effects: When using the filter of the utility model, the mixture of the liquid medicine and the residue enters the filter drum through the feed pipe. The liquid medicine can flow out through the filter holes, and then fall into the receiving groove and flow out from the liquid medicine outlet, while the residue stays in the filter drum. When the drive assembly drives the filter drum to rotate, the residue on the inner wall of the filter drum will rotate to the upper part of the filter drum. Under the action of gravity, the residue will fall from the upper part of the filter drum into the material receiving hopper and slide out from the discharging part along the material receiving hopper, so that the residue in the filter drum can be cleaned in time, the risk of residue blocking the filter holes can be reduced, and the filtering effect can be guaranteed. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of a drum-type filter for stripping the film of a circuit board according to an embodiment of the utility model;
[0015] Figure 2 is Figure 1 a schematic cross-sectional view taken along the A-A section line in
[0016] Figure 3 is a schematic structural diagram of a drum-type filter for stripping the film of a circuit board according to an embodiment of the utility model after removing part of the outer shell;
[0017] Figure 4 is a schematic structural diagram of a drum-type filter for stripping the film of a circuit board according to an embodiment of the utility model after removing part of the outer shell and the material receiving hopper;
[0018] Figure 5 is Figure 4 a schematic structural diagram of the drum-type filter for stripping the film of a circuit board shown in another perspective.
[0019] Among them, the reference numerals are:
[0020] Housing 100, receiving groove 110, bottom plate 111, feed pipe 101, liquid medicine outlet 102, residue outlet 103, support shaft 120, guide wheel 130;
[0021] Filter drum 200, filter holes 201, baffle plate 210;
[0022] Drive assembly 300, toothed ring 310;
[0023] Material receiving hopper 400, discharging part 410;
[0024] Blowing device 500;
[0025] Water spraying device 600, nozzle 610. Detailed implementation mode
[0026] The present utility model provides the following description with reference to the drawings to help a comprehensive understanding of various embodiments of the present utility model as defined by the claims and their equivalents. The description includes various specific details to facilitate understanding, but these details should be regarded as merely exemplary. 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 utility model.
[0027] In the description of the present utility model, the orientation description is involved. For example, the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.
[0028] It should be understood that when an element (for example, the first element) is "connected" to another element (for example, the second element), the element can be directly connected to the other element, or there can be an intermediate element (for example, the third element) between the element and the other element.
[0029] The embodiments of the present utility model provide a drum-type filter for removing the film of a circuit board, as Figures 1-5As shown in the figure, it includes a housing 100, a filtering drum 200, a driving assembly 300 and a material receiving hopper 400. The filtering drum 200 is arranged inside the housing 100 and is rotatably connected to the housing 100. The driving assembly 300 is connected to the filtering drum 200 and is used to drive the filtering drum 200 to rotate. A plurality of filtering holes 201 penetrating through itself are arranged on the circumferential surface of the filtering drum 200. The liquid medicine can flow out of the filtering drum 200 through the filtering holes 201, and the residue cannot pass through the filtering holes 201, so it stays in the filtering drum 200. A receiving groove 110 is arranged inside the housing 100. The receiving groove 110 is located below the filtering drum 200. The liquid medicine flowing out of the filtering holes 201 will flow downward under the action of gravity, and the receiving groove 110 can receive the liquid medicine flowing out of the filtering holes 201.
[0030] A residue outlet 103, a liquid medicine outlet 102 communicated with the receiving groove 110 and a feed pipe 101 communicated with the inner cavity of the filtering drum 200 are arranged on the surface of the housing 100. The mixture of the liquid medicine and the residue enters the filtering drum 200 through the feed pipe 101. After being filtered by the filtering drum 200, the liquid medicine can flow out through the filtering holes 201, then fall into the receiving groove 110, and then flow out from the liquid medicine outlet 102, while the residue stays in the filtering drum 200, completing the separation of the liquid medicine and the residue. The liquid medicine flowing out from the liquid medicine outlet 102 can be reused.
[0031] The material receiving hopper 400 extends into the filtering drum 200. When the driving assembly 300 drives the filtering drum 200 to rotate, the residue on the inner wall of the filtering drum 200 will rotate to the upper part of the filtering drum 200. At this position, the filtering drum 200 is equivalent to being above the residue, and the residue will fall from the upper part of the filtering drum 200 into the material receiving hopper 400 under the action of gravity. The material receiving hopper 400 can receive the residue falling from the upper part of the filtering drum 200. At the same time, the material receiving hopper 400 includes a discharge part 410 for the residue to slide out. The discharge part 410 extends out of the housing 100 through the residue outlet 103. When the residue in the material receiving hopper 400 moves to the discharge part 410, it can slide along the discharge part 410 to move out of the filtering drum 200. Thus, the residue in the filtering drum 200 can be cleaned in time, the risk of the residue blocking the filtering holes 201 can be reduced, and the filtering effect of the whole filter can be guaranteed.
[0032] In some embodiments, the discharge part 410 can be arranged at the lowest point of the height of the material receiving hopper 400, so that the residue slides towards the discharge part 410 by itself under the action of gravity. The discharge part 410 can be an inclined circular tube, an inclined V-shaped plate or other structures.
[0033] In some embodiments, a plurality of baffle plates 210 are provided on the inner peripheral wall of the filtering drum 200. The baffle plates 210 serve to block the residue from sliding down along the inner periphery of the filtering drum 200. During the process of the residue moving upward along the filtering drum 200 with the filtering drum 200, the baffle plates 210 can drive more residue to move upward to the upper part of the filtering drum 200, so that the residue will not fall until it reaches near the top position of the filtering drum 200, rather than sliding down along the inner periphery of the filtering drum 200 prematurely. In this way, more residue will fall into the material receiving hopper 400, reducing the residue remaining in the filtering drum 200 and achieving a better cleaning effect on the residue.
[0034] In some embodiments, a blowing device 500 is provided outside the filtering drum 200. The blowing device 500 is arranged at the top of the filtering drum 200 and is used to blow air towards the top of the filtering drum 200. The air flow blown out by the blowing device 500 can pass through the filtering holes 201, and then blow off the residue remaining on the inner wall at the top of the filtering drum 200. The blown-off residue will fall into the material receiving hopper 400, further reducing the residue remaining in the filtering drum 200 and achieving a better cleaning effect on the residue.
[0035] In some embodiments, a water spraying device 600 is fixed on the outer shell 100. The water spraying device 600 is used to spray water onto the inner wall of the filtering drum 200 to loosen the residue on the inner wall of the filtering drum 200 so that it will not adhere tightly to the inner wall of the filtering drum 200. When the residue rotates to the upper part of the filtering drum 200, the residue is more likely to fall off, further reducing the residue remaining in the filtering drum 200 and achieving a better cleaning effect on the residue.
[0036] Further, the water spraying device 600 includes a water tank, a booster pump, and a nozzle 610. The water tank, the booster pump, and the nozzle 610 are connected in sequence. Water is stored in the water tank. The booster pump is used to boost the pressure of the water to increase the impact force of the water. The water is then sprayed out from the nozzle 610. The nozzle 610 is fixed on the outer shell 100 and is configured to face the inner wall of the filtering drum 200. The water sprayed out from the nozzle 610 can act on the inner wall of the filtering drum 200 to wash away the residue on the inner wall of the filtering drum 200.
[0037] In some embodiments, a plurality of support shafts 120 extending along the axial direction of the filter drum 200 are fixed inside the outer shell 100. A guide wheel 130 rotatable around the support shaft 120 is sleeved on the support shaft 120. The support shafts 120 are distributed on the outer periphery of the filter drum 200, and the guide wheels 130 on the support shafts 120 abut against the outer peripheral wall of the filter drum 200. This structure can realize the rotational connection between the filter drum 200 and the outer shell 100. The guide wheels 130 provide support for the filter drum 200 and limit the relative movement of the filter drum 200 with respect to the outer shell 100 from the outer periphery. When the filter drum 200 rotates, the guide wheels 130 also rotate along with the filter drum 200 to reduce the friction force and make the rotation of the filter drum 200 smoother.
[0038] In some embodiments, the drive assembly 300 includes a driver, a gear, and a toothed ring 310. The toothed ring 310 is annular, and engaging teeth adapted to the gear are provided on its outer periphery or inner periphery. The toothed ring 310 is coaxially connected to the filter drum 200. The gear meshes with the toothed ring 310. The driver is connected to the gear and is used to drive the gear to rotate. The gear then drives the toothed ring 310 to rotate, thereby causing the filter drum 200 to rotate. Among them, the driver can be a motor.
[0039] In some embodiments, the outer shell 100 includes a bottom plate 111 at its bottom and a plurality of side plates at its sides. The side plates and the bottom plate 111 enclose to form a receiving groove 110. The filter drum 200 is arranged above the bottom plate 111, and the plurality of side plates surround the filter drum 200 on all sides. Even if the liquid medicine spills onto the side plates, it will flow downward along the side plates into the receiving groove 110, so that the receiving groove 110 can receive more liquid medicine.
[0040] The terms and words used in the above description and claims are not limited to their literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the present utility model. Therefore, those skilled in the art should clearly understand that the descriptions of the various embodiments of the present utility model provided above are only for the purpose of illustration, rather than to limit the present utility model as defined by the appended claims and their equivalents.
Claims
1. A drum filter for stripping the film of a circuit board, characterized in that: It includes a housing, a filtering drum, a driving assembly and a material receiving hopper; the filtering drum is arranged inside the housing and rotatably connected to the housing, and the driving assembly is connected to the filtering drum and used to drive the filtering drum to rotate; a plurality of filtering holes penetrating through the filtering drum are arranged on the circumferential surface of the filtering drum, a receiving groove is arranged inside the housing, and the receiving groove is located below the filtering drum to receive the liquid medicine flowing out from the filtering holes; a residue outlet, a liquid medicine outlet communicated with the receiving groove and a feed pipe communicated with the inner cavity of the filtering drum are arranged on the surface of the housing; the material receiving hopper extends into the filtering drum to receive the residues falling from the upper part of the filtering drum, and the material receiving hopper includes a discharging part for the residues to slide out, and the discharging part extends out of the housing through the residue outlet.
2. The drum filter for stripping the circuit board according to claim 1, wherein: A plurality of baffle plates are arranged on the inner peripheral wall of the filtering drum.
3. The drum filter for stripping the circuit board film according to claim 1, wherein: A blowing device is arranged on the outside of the filtering drum, and the blowing device is arranged at the top of the filtering drum and used to blow air to the top of the filtering drum.
4. The drum filter for stripping the circuit board film according to claim 1, wherein: A water spraying device is fixed on the housing, and the water spraying device is used to spray water to the inner wall of the filtering drum.
5. The drum filter for stripping the circuit board film according to claim 4, characterized in that: The water spraying device includes a water tank, a booster pump and a nozzle, the water tank, the booster pump and the nozzle are connected in sequence, and the nozzle is fixed on the housing and configured to face the inner wall of the filtering drum.
6. The drum filter for stripping the circuit board according to any one of claims 1-5, characterized in that: A plurality of support shafts extending along the axial direction of the filtering drum are fixed inside the housing, a guide wheel rotatable around the support shaft is sleeved on the support shaft, the support shafts are distributed on the outer periphery of the filtering drum, and the guide wheels on the support shafts abut against the outer peripheral wall of the filtering drum.
7. The drum filter for stripping the circuit board according to any one of claims 1-5, characterized in that: The driving assembly includes a driver, a gear and a toothed ring, the toothed ring is coaxially connected with the filtering drum, the gear meshes with the toothed ring, and the driver is connected with the gear and used to drive the gear to rotate.
8. The drum filter for stripping the circuit board according to any one of claims 1-5, characterized in that: The housing includes a bottom plate at its bottom and a plurality of side plates at its side, and the side plates and the bottom plate enclose to form the receiving groove.