Multistage centrifugal filtering device for PCB (Printed Circuit Board) developing liquid medicine

Abstract

The utility model discloses a multi-stage centrifugal filtering device for PCB (Printed Circuit Board) developing liquid medicine, which relates to the technical field of PCB production and comprises a first centrifugal filtering component, the first centrifugal filtering component is mounted on the inner wall of a mounting shell, one side of the first centrifugal filtering component is fixedly connected with a second centrifugal filtering component, and the other side of the first centrifugal filtering component is fixedly connected with a second centrifugal filtering component. A developing solution cotton core filtering assembly is arranged on one side of the second centrifugal filtering assembly, a conveying roller is rotationally connected to the inner wall of the mounting shell, and a PCB is in lap joint with the surface of the conveying roller. Through the filtration of the first filter assembly and the second filter assembly, the whole developing solution is filtered in multiple stages, so that the filtering effect of the developing solution is improved, impurities with different sizes in the developing solution can be removed through each stage of filtration in a multi-stage filtration manner, and the problem that the developing solution is not easily filtered when the developing solution passes through the developing solution filtering storage tank for one time conventionally can be effectively avoided. And a large amount of impurities are accumulated on the surface of the filter cotton to influence the filtering effect.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB production, in particular to a multi-stage centrifugal filtering device for PCB developing liquid. Background Art

[0002] With the development of PCB, PCB equipment manufacturers will improve and upgrade the equipment according to the actual defects of customers, so as to facilitate the operation of PCB manufacturing factories and ensure more stable quality. However, the filtration improvement and upgrade of the developing water line in the PCB equipment manufacturer industry has not achieved the ideal effect. Its working principle is: the solution in the developing tank production of the developing water line is delivered to the filter storage tank through the delivery pump, and then the developing solution in the storage tank is delivered to the nozzle through the pressure of the delivery pump.

[0003] At present, the filtering storage tanks in the industry all use filter cotton cores and filter nets for filtering, but the filtering cannot achieve the best filtering effect. Its disadvantages are as follows: the current design of the industry's developing water line equipment is a filtration (filtering storage tank). During the process, excessive impurities in the solution will frequently cause the filter cotton core or the filter net to become blocked, thereby affecting the filtering effect. At the same time, excessive impurities in the solution will cause the nozzle to be blocked when it is transported to the nozzle, which will lead to poor developing effect and PCB quality problems. Utility Model Content

[0004] The utility model provides a multi-stage centrifugal filtering device for PCB developing liquid medicine, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A multi-stage centrifugal filter device for PCB developer solution comprises a first centrifugal filter assembly, wherein the first centrifugal filter assembly is installed inside a containing space enclosed by a mounting shell, one side of the first centrifugal filter assembly is connected to a second centrifugal filter assembly via a pipeline, one side of the second centrifugal filter assembly is connected to a developer cotton core filter assembly via a pipeline, a conveying roller is rotatably connected to the inner wall of the mounting shell, a PCB is overlapped on the surface of the conveying roller, and an inspection door is arranged on the front side of the mounting shell.

[0007] A further improvement of the technical solution of the utility model is that the first centrifugal filter assembly includes a first infusion tube, a first delivery pump is arranged in the middle of the first infusion tube, one end of the first infusion tube is fixedly connected to a first centrifugal chamber cover, and a first centrifugal chamber is arranged at the bottom of the first centrifugal chamber cover.

[0008] A further improvement of the technical solution of the utility model is that: a first motor is fixedly connected to the bottom of the inner cavity of the first centrifugal bin, a first centrifugal bucket is fixedly connected to the top of the first motor shaft, a through hole is provided on the surface of the first centrifugal bucket, a clamping plate is fixedly connected to the bottom of the inner cavity of the first centrifugal bucket, a paddle is fixedly connected to the inner wall of the clamping plate, a through hole is provided on the surface of the clamping plate, and a filter cloth is overlapped on one side of the clamping plate close to the inner wall of the first centrifugal bucket.

[0009] A further improvement of the technical solution of the utility model is that the second centrifugal filter assembly includes a second infusion tube, one end of the second infusion tube is fixedly connected to the bottom of the inner cavity of the first centrifugal bin, a second delivery pump is arranged in the middle of the second infusion tube, and one end of the second infusion tube is fixedly connected to the second centrifugal bin cover.

[0010] A further improvement of the technical solution of the utility model is that a second centrifugal bin is arranged at the bottom of the second centrifugal bin cover, a second motor is fixedly connected to the bottom of the inner cavity of the second centrifugal bin, a second centrifugal bucket is fixedly connected to the top of the second motor shaft, micron-sized through holes are opened on the surface of the second centrifugal bucket, a third infusion tube is fixedly connected to the bottom of the inner cavity of the second centrifugal bin, and a third delivery pump is arranged inside the third infusion tube.

[0011] A further improvement of the technical solution of the utility model is that the developer cotton core filter assembly includes a developer filter storage tank, the top of the inner cavity of the developer filter storage tank is fixedly connected to one end of the third infusion tube, and one side of the lower end of the inner cavity of the developer filter storage tank is fixedly connected to the fourth infusion tube.

[0012] A further improvement of the technical solution of the utility model is that a fourth delivery pump is arranged in the middle of the fourth infusion tube, a sprayer is fixedly connected to one end of the fourth infusion tube, and the top of the sprayer is fixedly connected to the top of the inner cavity of the mounting shell.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] The utility model provides a multi-stage centrifugal filtering device for PCB developer solution. Through the filtration of a first filter component and a second filter component, the filtration of the entire developer solution is carried out in multiple stages, thereby improving the filtration effect of the developer solution. At the same time, in the multi-stage filtration mode, each stage of filtration can remove impurities of different sizes in the developer solution, which can effectively avoid the situation in which a large amount of impurities are accumulated on the surface of the filter cotton during the conventional single-pass developer solution filtration storage tank, affecting the filtration effect, so that the developer solution delivered to the nozzle has fewer impurities, the PCB production quality is better, and the nozzle is not easy to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the back structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the developer filter storage tank of the utility model;

[0019] Figure 5 It is a schematic cross-sectional structural diagram of the first centrifugal filter assembly of the present utility model.

[0020] In the figure: 1. mounting shell; 2. first centrifugal filter assembly; 21. first infusion tube; 22. first delivery pump; 23. first centrifugal chamber cover; 24. first centrifugal chamber; 25. first motor; 26. first centrifugal bucket; 27. card plate; 28. paddle; 29. ​​filter cloth; 3. second centrifugal filter assembly; 31. second infusion tube; 32. second delivery pump; 33. second centrifugal chamber cover; 34. second centrifugal chamber; 35. second motor; 36. second centrifugal bucket; 37. third infusion tube; 38. third delivery pump; 4. developer cotton core filter assembly; 41. developer filter storage tank; 42. fourth infusion tube; 43. fourth delivery pump; 44. sprayer; 5. delivery roller; 6. PCB; 7. inspection door. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] Example 1

[0023] like Figure 1-5As shown, the utility model provides a PCB developer liquid multi-stage centrifugal filter device, comprising a first centrifugal filter assembly 2, the first centrifugal filter assembly 2 is installed inside the accommodating space surrounded by the installation shell 1, one side of the first centrifugal filter assembly 2 is connected to the second centrifugal filter assembly 3 through a pipeline, one side of the second centrifugal filter assembly 3 is connected to the developer liquid cotton core filter assembly 4 through a pipeline, the inner wall of the installation shell 1 is rotatably connected to a conveying roller 5, the surface of the conveying roller 5 is overlapped with a PCB 6, the front of the installation shell 1 is provided with an inspection door 7, the first centrifugal filter assembly 2 includes a first infusion tube 21, the middle of the first infusion tube 21 A first delivery pump 22 is provided at the bottom, one end of the first infusion tube 21 is fixedly connected to the first centrifugal chamber cover 23, the bottom of the first centrifugal chamber cover 23 is provided with a first centrifugal chamber 24, the bottom of the inner cavity of the first centrifugal chamber 24 is fixedly connected to a first motor 25, the top of the rotating shaft of the first motor 25 is fixedly connected to a first centrifugal bucket 26, the surface of the first centrifugal bucket 26 is provided with a through hole, the bottom of the inner cavity of the first centrifugal bucket 26 is fixedly connected to a clamping plate 27, the inner wall of the clamping plate 27 is fixedly connected to a paddle 28, the surface of the clamping plate 27 is provided with a through hole, and a filter cloth 29 is overlapped on one side of the clamping plate 27 close to the inner wall of the first centrifugal bucket 26.

[0024] In this embodiment, when filtering the developer, the developer accumulated at the bottom of the inner cavity of the mounting shell 1 after being sprayed out from the sprayer 44 is input into the first centrifugal barrel 26 along the first liquid infusion pipe 21 through the first delivery pump 22. Then, under the action of the first motor 25, the first centrifugal barrel 26 is rotated. Under the action of centrifugal force, the developer passes through the filter cloth 29 and enters the first centrifugal chamber 24. Large impurities in the developer are blocked by the filter cloth 29 and remain in the first centrifugal barrel 26.

[0025] Example 2

[0026] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the second centrifugal filter assembly 3 includes a second infusion tube 31, one end of the second infusion tube 31 is fixedly connected to the bottom of the inner cavity of the first centrifugal bin 24, a second delivery pump 32 is arranged in the middle of the second infusion tube 31, one end of the second infusion tube 31 is fixedly connected to the second centrifugal bin cover 33, a second centrifugal bin 34 is arranged at the bottom of the second centrifugal bin cover 33, a second motor 35 is fixedly connected to the bottom of the inner cavity of the second centrifugal bin 34, a second centrifugal bucket 36 is fixedly connected to the top of the rotating shaft of the second motor 35, a micron-sized through hole is opened on the surface of the second centrifugal bucket 36, a third infusion tube 37 is fixedly connected to the bottom of the inner cavity of the second centrifugal bin 34, and a third delivery pump 38 is arranged inside the third infusion tube 37.

[0027] In this embodiment, the developer after the initial centrifugal filtration enters the second centrifugal barrel 36 along the second infusion tube 31 under the action of the second delivery pump 32. The second centrifugal barrel 36 rotates at a high speed under the action of the second motor 35. Under the action of centrifugal force, the developer seeps out into the second centrifugal chamber 34 along the micron-sized through holes on the surface of the second centrifugal barrel 36, and the fine impurities are blocked by the second centrifugal barrel 36 and remain in the second centrifugal barrel 36.

[0028] Example 3

[0029] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the developer cotton core filter assembly 4 includes a developer filter storage tank 41, the top of the inner cavity of the developer filter storage tank 41 is fixedly connected to one end of the third infusion tube 37, and one side of the lower end of the inner cavity of the developer filter storage tank 41 is fixedly connected to a fourth infusion tube 42, a fourth delivery pump 43 is arranged in the middle of the fourth infusion tube 42, one end of the fourth infusion tube 42 is fixedly connected to a sprayer 44, and the top of the sprayer 44 is fixedly connected to the top of the inner cavity of the mounting shell 1.

[0030] In this embodiment, under the action of the third delivery pump 38, the developer after multi-stage centrifugal filtration enters the developer filter storage tank 41 along the third delivery pipe 37 and is filtered again. After the filtration is completed, the developer enters the sprayer 44 along the fourth delivery pipe 42 through the fourth delivery pump 43 and is sprayed onto the surface of the PCB 6. Before being filtered through the traditional developer filter storage tank 41, most of the impurities in the developer are removed by multi-stage centrifugal filtration, so that the filtration of the entire developer is better and the filtration is not easy to be blocked.

[0031] The working principle of the multi-stage centrifugal filtration device for PCB developing solution is described in detail below.

[0032] like Figure 1-5As shown, when filtering the developer, the developer accumulated at the bottom of the inner cavity of the mounting shell 1 after being sprayed out from the sprayer 44 is fed into the first centrifugal barrel 26 along the first liquid infusion pipe 21 through the first delivery pump 22. Then, under the action of the first motor 25, the first centrifugal barrel 26 is rotated. Under the action of centrifugal force, the developer passes through the filter cloth 29 and enters the first centrifugal bin 24. Large impurities in the developer are blocked by the filter cloth 29 and remain in the first centrifugal barrel 26. The developer after the initial centrifugal filtration enters the second centrifugal barrel 36 along the second liquid infusion pipe 31 under the action of the second delivery pump 32. Under the action of the second motor 35, the second centrifugal barrel 36 is rotated at a high speed. Under the action of centrifugal force, The developer seeps out into the second centrifugal bin 34 along the micron-sized through holes on the surface of the second centrifugal barrel 36, and the fine impurities are blocked by the second centrifugal barrel 36 and remain in the second centrifugal barrel 36. Subsequently, under the action of the third delivery pump 38, the developer after multi-stage centrifugal filtration enters the developer filtration storage tank 41 along the third infusion pipe 37, and is filtered again. After the filtration is completed, the developer enters the sprayer 44 along the fourth infusion pipe 42 through the fourth delivery pump 43, and is sprayed onto the surface of the PCB 6. Before being filtered through the traditional developer filtration storage tank 41, most of the impurities in the developer are removed by multi-stage centrifugal filtration, so that the filtration of the entire developer is better and the filtration is not easy to be blocked.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-stage centrifugal filtration device for PCB developer solution, comprising a first centrifugal filtration component (2), characterized in that: The first centrifugal filter assembly (2) is installed inside the accommodating space enclosed by the installation shell (1); one side of the first centrifugal filter assembly (2) is connected to the second centrifugal filter assembly (3) through a pipeline; one side of the second centrifugal filter assembly (3) is connected to the developer cotton core filter assembly (4) through a pipeline; the inner wall of the installation shell (1) is rotatably connected to a conveying roller (5); a PCB (6) is overlapped on the surface of the conveying roller (5); an inspection door (7) is provided on the front of the installation shell (1); the first centrifugal filter assembly (2) comprises a first infusion tube (21); the first A first delivery pump (22) is arranged in the middle of the infusion tube (21); one end of the first infusion tube (21) is fixedly connected to a first centrifugal chamber cover (23); a first centrifugal chamber (24) is arranged at the bottom of the first centrifugal chamber cover (23); the second centrifugal filter assembly (3) comprises a second infusion tube (31); one end of the second infusion tube (31) is fixedly connected to the bottom of the inner cavity of the first centrifugal chamber (24); a second delivery pump (32) is arranged in the middle of the second infusion tube (31); and one end of the second infusion tube (31) is fixedly connected to the second centrifugal chamber cover (33).

2. The multi-stage centrifugal filtration device for PCB developer solution according to claim 1, characterized in that: A first motor (25) is fixedly connected to the bottom of the inner cavity of the first centrifugal bin (24), a first centrifugal bucket (26) is fixedly connected to the top of the rotating shaft of the first motor (25), a through hole is provided on the surface of the first centrifugal bucket (26), a clamping plate (27) is fixedly connected to the bottom of the inner cavity of the first centrifugal bucket (26), a paddle (28) is fixedly connected to the inner wall of the clamping plate (27), a through hole is provided on the surface of the clamping plate (27), and a filter cloth (29) is overlapped on one side of the clamping plate (27) close to the inner wall of the first centrifugal bucket (26).

3. The multi-stage centrifugal filtration device for PCB developer solution according to claim 1, characterized in that: A second centrifugal chamber (34) is arranged at the bottom of the second centrifugal chamber cover (33); a second motor (35) is fixedly connected to the bottom of the inner cavity of the second centrifugal chamber (34); a second centrifugal bucket (36) is fixedly connected to the top of the rotating shaft of the second motor (35); micron-sized through holes are provided on the surface of the second centrifugal bucket (36); a third infusion tube (37) is fixedly connected to the bottom of the inner cavity of the second centrifugal chamber (34); a third delivery pump (38) is arranged inside the third infusion tube (37).

4. The multi-stage centrifugal filtration device for PCB developer solution according to claim 1, characterized in that: The developer liquid cotton core filter assembly (4) comprises a developer liquid filter storage tank (41), the top of the inner cavity of the developer liquid filter storage tank (41) is fixedly connected to one end of a third infusion tube (37), and one side of the lower end of the inner cavity of the developer liquid filter storage tank (41) is fixedly connected to a fourth infusion tube (42).

5. The multi-stage centrifugal filtration device for PCB developer solution according to claim 4, characterized in that: A fourth delivery pump (43) is provided in the middle of the fourth infusion tube (42), one end of the fourth infusion tube (42) is fixedly connected to a sprayer (44), and the top of the sprayer (44) is fixedly connected to the top of the inner cavity of the mounting shell (1).

Images