Multi-purpose filtering device for PCB electroplating

Abstract

A multi-purpose filtering device for PCB electroplating comprises a carbon core filtering barrel and a cotton core filtering barrel. The device further comprises an inlet pipeline, the inlet pipeline is connected with the carbon core filter vat through a first valve, the output end of the carbon core filter vat is connected with the inlet pipeline through a second valve, the inlet pipeline is further connected with a third valve, and the inlet pipeline is connected with the cotton core filter vat through a suction pump. A fourth valve is arranged at the output end of the cotton core filtering barrel; when the first valve, the second valve and the fourth valve are opened, and the third valve is closed, materials enter from the inlet pipeline, are filtered by the carbon core filter vat, are filtered by the cotton core filter vat, and are output; when the first valve and the second valve are closed and the third valve and the fourth valve are opened, materials enter from the inlet pipeline, are filtered by the cotton core filter vat and then are output.

Description

Technical Field

[0001] The utility model relates to the field of PCB electroplating, in particular to a multi-purpose filtering device for PCB electroplating. Background Art

[0002] In the traditional electroplating process of PCB, in order to reduce the impact of foreign matter, copper slag, carbon powder, organic matter, etc. on the electroplating quality of PCB boards, such as copper cylinders, tin cylinders, nickel cylinders, etc., we usually install filtering devices to filter the liquid medicine. At the same time, in order to reduce the impact of organic additives on the electroplating quality of PCB boards and the excessive harmful substances during production, we will regularly perform carbon treatment on the liquid medicine to remove excess pollutants. Usually a filtering device consists of a filter motor, a filter barrel and a corresponding filter cotton core (or carbon core). For example, when filtering impurities and foreign matter normally, use the cotton core, and when carbonizing organic matter, remove the cotton core and replace it with a carbon core.

[0003] Traditional filter devices usually use a filter element that is replaced in turn, such as a cotton core that is replaced every 3-6 months and a carbon core that is replaced every month. Because the use cycles of the two filter elements are inconsistent, premature replacement will cause waste and economic losses. Moreover, after replacing the carbon core, it is easy to bring carbon powder into the copper cylinder because there is no other filter, which can cause abnormal copper particles on the PCB surface in serious cases. Utility Model Content

[0004] In order to solve the above problems, the present technical solution provides a multi-purpose filtering device for PCB electroplating.

[0005] To achieve the above purpose, the technical solution is as follows:

[0006] A multi-purpose filtration device for PCB electroplating, comprising a carbon core filter barrel and a cotton core filter barrel;

[0007] It also includes an inlet pipe, which is connected to the carbon core filter barrel through a first valve, the output end of the carbon core filter barrel is connected to the inlet pipe through a second valve, the inlet pipe is also connected to a third valve, the inlet pipe is connected to the cotton core filter barrel through a pump, and the output end of the cotton core filter barrel is provided with a fourth valve;

[0008] When the first valve, the second valve and the fourth valve are opened and the third valve is closed, the material enters from the inlet pipe, is first filtered by the carbon core filter barrel and then filtered by the cotton core filter barrel before being output;

[0009] When the first valve and the second valve are closed and the third valve and the fourth valve are opened, the material enters from the inlet pipe, is filtered through the cotton core filter barrel, and is then output.

[0010] In some embodiments, the inlet pipeline is provided with a three-way valve, one end of the three-way valve is connected to the inlet, one end is connected to the first valve, and one end is connected to the third valve.

[0011] In some embodiments, the first valve, the second valve, and the third valve are manual valves or solenoid valves.

[0012] In some embodiments, the inlet pipe is also provided with a four-way valve, one end of the four-way valve is connected to the second valve, one end is connected to the third valve, one end is connected to the cotton core filter barrel, and one end is connected to the fifth valve, and the fifth valve is connected to the cleaning pipe through the water inlet pump.

[0013] The beneficial effects of this application are:

[0014] This application can shut down the carbon core filtration at any time as needed, which will not affect the circulation of the main copper tank medicine and the production progress (for example, most copper tanks need to suspend production and stop line maintenance and replacement. After the filtration is shut down, the main copper tank medicine will flow back to the auxiliary tank, resulting in insufficient liquid level). Secondly, there is no need to replace the carbon core with a cotton core immediately after treatment, which wastes costs (the carbon core is treated once every half a month, and the cotton core is replaced every 3-6 months). Finally, one filter motor and two filter barrels are used, and the carbon core and cotton core can be installed at the same time, which reduces electricity consumption, eliminates the waste of cotton cores, and facilitates maintenance, achieving the effect of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] Please refer to Figure 1 As shown, a multi-purpose filtering device for PCB electroplating includes a carbon core filtering barrel 1 and a cotton core filtering barrel 2;

[0019] It also includes an inlet pipe 3, which is connected to the carbon core filter barrel 1 through a first valve 4, and the output end of the carbon core filter barrel 1 is connected to the inlet pipe 3 through a second valve 5. The inlet pipe 3 is also connected to a third valve 6. The inlet pipe 3 is connected to the cotton core filter barrel 2 through a pump 8, and the output end of the cotton core filter barrel 2 is provided with a fourth valve 7;

[0020] When the first valve 4, the second valve 5 and the fourth valve 7 are opened and the third valve 6 is closed, the material enters from the inlet pipe 3, is first filtered by the carbon core filter barrel 1 and then filtered by the cotton core filter barrel 2 before being output;

[0021] When the first valve 4 and the second valve 5 are closed, and the third valve 6 and the fourth valve 7 are opened, the material enters from the inlet pipe 3, is filtered through the cotton core filter barrel 2, and is then output.

[0022] The carbon core filter barrel is a spare barrel. When doing carbon core filtration, the carbon core is enabled and installed. After the carbon core is processed (usually 8 hours), the carbon core can be taken out. Or, when the carbon core is filtering, according to the additive situation of the copper tank medicine, if the additive is insufficient, the filter barrel can be closed by the switch at any time. At this time, the medicine will no longer be filtered through the carbon core, and the concentration of organic additives in the copper tank will remain stable.

[0023] The cotton core filter barrel is a special cotton core filter device, which is mainly used to filter small particles and debris in the medicine.

[0024] How to use: Under the action of the motor pump of the cotton core filter barrel, the medicine comes out of the copper cylinder and enters the filter barrel from the inlet, flows out from the outlet after passing through the filter barrel, and flows back to the copper cylinder.

[0025] During normal production, the first and second valves are closed, the third and fourth valves are opened, and the medicine is filtered through the cotton core of the cotton core filter barrel. The cotton core can be replaced every three months or six months. When the copper tank medicine contains more organic matter and needs to be treated with a carbon core (generally once every half a month), the carbon core filter barrel is installed with a carbon core, the first, second and fourth valves are opened, and the third valve is closed. The medicine is filtered through the carbon core and cotton core of the two filter barrels and then returned to the copper tank. After the carbon core is treated (8 hours), the third valve is opened, the first and second valves are closed, and the carbon core can be removed at any time.

[0026] In this embodiment, the inlet pipe 3 is provided with a three-way valve 9, one end of the three-way valve 9 is connected to the inlet, one end is connected to the first valve 4, and one end is connected to the third valve 6, in order to facilitate the connection of the pipeline.

[0027] In this embodiment, the first valve 4 , the second valve 5 and the third valve 6 are manual valves or solenoid valves.

[0028] In this embodiment, the inlet pipe 3 is also provided with a four-way valve 10, one end of the four-way valve 10 is connected to the second valve 5, one end is connected to the third valve 6, one end is connected to the cotton core filter barrel 2, and one end is connected to the fifth valve 11, and the fifth valve 11 is connected to the cleaning pipe 13 through the water inlet pump 12.

[0029] When cleaning, open the fifth valve, then open the fourth valve, and then use the water inlet pump to bring the cleaning liquid into the cotton core filter pump for flushing, then close the fourth valve, and then open the first, second and third valves, and use the water pump again to clean the carbon core filter barrel and the water inlet pipe. At this time, the cleaning barrel can be connected to the water inlet pipe.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. A multi-purpose filtering device for PCB electroplating, characterized in that: It comprises a carbon core filter barrel (1) and a cotton core filter barrel (2); It also comprises an inlet pipe (3), the inlet pipe (3) is connected to the carbon core filter barrel (1) via a first valve (4), the output end of the carbon core filter barrel (1) is connected to the inlet pipe (3) via a second valve (5), the inlet pipe (3) is also connected to a third valve (6), the inlet pipe (3) is connected to the cotton core filter barrel (2) via a pump (8), and the output end of the cotton core filter barrel (2) is provided with a fourth valve (7); When the first valve (4), the second valve (5) and the fourth valve (7) are opened and the third valve (6) is closed, the material enters from the inlet pipe (3), is first filtered by the carbon core filter barrel (1), and then filtered by the cotton core filter barrel (2) before being output; When the first valve (4) and the second valve (5) are closed and the third valve (6) and the fourth valve (7) are opened, the material enters from the inlet pipe (3), is filtered by the cotton core filter barrel (2), and is then output.

2. A multi-purpose filtering device for PCB electroplating according to claim 1, characterized in that: The inlet pipe (3) is provided with a three-way valve (9), one end of the three-way valve (9) is connected to the inlet, one end is connected to the first valve (4), and one end is connected to the third valve (6).

3. A multi-purpose filtering device for PCB electroplating according to claim 2, characterized in that: The first valve (4), the second valve (5) and the third valve (6) are manual valves or solenoid valves.

4. A multi-purpose filtering device for PCB electroplating according to claim 3, characterized in that: The inlet pipe (3) is also provided with a four-way valve (10), one end of the four-way valve (10) is connected to the second valve (5), one end is connected to the third valve (6), one end is connected to the cotton core filter barrel (2), and one end is connected to a fifth valve (11), and the fifth valve (11) is connected to the cleaning pipe (13) via a water inlet pump (12).

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