阅读说明：本技术 一种线路板显影液循环回收系统 (Circuit board developer solution circulation recovery system ) 是由 张燕厚 于 2019-11-01 设计创作，主要内容包括：本发明提供一种线路板显影液循环回收系统,包括显影液槽,显影液槽的出料口通过管道与浓缩水槽进料口相连,浓缩水槽的出料口通过管道与膜过滤装置依次相连,膜过滤装置的第一出料口通过管道与显影液槽进料口相连,膜过滤装置的第二出料口通过管道与浓缩水槽进料口相连,管道间装有若干阀门,阀门与PLC控制器电性连接,以实现正向过滤模式与反向过滤模式的切换,浓缩水槽与膜过滤装置间还设有一清洗系统。本发明提供一种显影液可循环使用,过滤效率高,排放低的线路板显影液循环回收系统。(The invention provides a circuit board developer circulation recovery system, which comprises a developer tank, wherein a discharge hole of the developer tank is connected with a feed inlet of a concentrated water tank through a pipeline, a discharge hole of the concentrated water tank is sequentially connected with a membrane filtering device through a pipeline, a first discharge hole of the membrane filtering device is connected with the feed inlet of the developer tank through a pipeline, a second discharge hole of the membrane filtering device is connected with the feed inlet of the concentrated water tank through a pipeline, a plurality of valves are arranged between the pipelines, the valves are electrically connected with a PLC (programmable logic controller) so as to realize the switching between a forward filtering mode and a reverse filtering mode, and a cleaning system is also arranged between the concentrated water tank and the membrane. The invention provides a circuit board developer recycling system which can recycle developer, has high filtering efficiency and low discharge.)

1. The circuit board developer circulating recovery system is characterized by comprising a developer tank (1), wherein a discharge hole of the developer tank (1) is connected with a feed hole of a concentrated water tank (2), a discharge hole of the concentrated water tank (2) is connected with a feed hole of a membrane filtering device (4) through a second pipeline (102), a water inlet valve (10) and a forward water inlet valve (11) are installed on the second pipeline (102), a first discharge hole of the membrane filtering device (4) is connected with the feed hole of the developer tank (1) through a sixth pipeline (106), a water producing valve (14) is installed on the sixth pipeline (106), a second discharge hole of the membrane filtering device (4) is connected with the feed hole of the concentrated water tank (2) through a third pipeline (103), a forward water concentrating valve (13) is installed on the third pipeline (103), a fifth pipeline (105) is arranged between the second pipeline (102) and the third pipeline (103), a reverse concentrated water valve (12) is arranged on the fifth pipeline (105), a seventh pipeline (107) is arranged between the second pipeline (102) and the first discharge port of the membrane filtering device (4), a reverse water inlet valve (18) is arranged on the seventh pipeline (107), and a cleaning device is also arranged on the second pipeline (102);

the water inlet valve (10), the forward water inlet valve (11), the forward concentrated water valve (13), the reverse water inlet valve (18), the reverse concentrated water valve (12) and the water production valve (14) are electrically connected with the PLC to realize the switching between the forward filtering mode and the reverse filtering mode.

2. The circuit board developer recycling system of claim 1, wherein the cleaning system comprises a cleaning water tank (3), the discharge port of the cleaning water tank (3) is connected with the second pipeline (102) through a fourth pipeline (104), a cleaning water inlet valve (19) is installed on the fourth pipeline (104), a cleaning concentrate valve (16) is installed between the feed port of the cleaning water tank (3) and the first discharge port of the membrane filtering device (4), a cleaning water producing valve (15) is installed between the first feed port of the cleaning water tank (3) and the second discharge port of the membrane filtering device (4), and a discharge valve (17) is installed on the seventh pipeline (107).

3. The recycling system of circuit board developer according to claim 1, wherein a stock solution lift pump (5) is disposed between the developer tank (1) and the concentrated water tank (2).

4. The circuit board developer recycling system of claim 2, wherein a high pressure filtering pump (6) is arranged between the water inlet valve (10) and the forward water inlet valve (11).

5. The circuit board developer recycling system of claim 1, wherein the feed inlet of the membrane filtering device (4) is provided with a water inlet pressure detector (7).

6. The circuit board developer recycling system of claim 1, wherein the second discharge port of the membrane filtering device (4) is provided with a concentrated water pressure detector (8).

Technical Field

The invention relates to a recovery system, in particular to a circuit board developing solution recycling system.

Background

In the prior art, the developer is often treated by discharging all developer from the developer tank or by continuously replenishing new developer at regular intervals. All developer is discharged together, the operation has to be stopped, and fine development parameters need to be adjusted when the operation is continued, which is not suitable for large-scale production requirements. In the method of continuously replenishing a new developer at regular intervals, if the amount of discharge is reduced, the developing capability is extremely lowered, and the degree of contamination of the developer in the developer tank becomes extremely high. The degree of contamination of the developer in the developer tank and the degree of contamination of the developer supplied to the developer due to clogging are factors that cause defects in the apparatus and products. On the other hand, if the discharge amount is increased, the contamination level of the developer in the developer tank can be suppressed to a low level, but the amount of new developer to be replenished is large, and the running cost increases.

Disclosure of Invention

The invention provides a circuit board developer recycling system, and aims to solve the problems of high developer pollution degree, mesh blockage and high filtering cost in the developer treatment process.

A circuit board developer recycling system comprises a developer tank, a discharge hole of the developer tank is connected with a feed inlet of a concentrated water tank, the discharge hole of the concentrated water tank is connected with the feed hole of the membrane filtering device through a second pipeline, a water inlet valve and a forward water inlet valve are arranged on the second pipeline, the first discharge hole of the membrane filtering device is connected with the feed inlet of the developing solution tank through a sixth pipeline, a water production valve is arranged on the sixth pipeline, a second discharge hole of the membrane filtering device is connected with a feed inlet of the concentrated water tank through a third pipeline, a forward concentrated water valve is arranged on the third pipeline, a fifth pipeline is arranged between the second pipeline and the third pipeline, a reverse concentrated water valve is arranged on the fifth pipeline, a seventh pipeline is arranged between the second pipeline and the first discharge hole of the membrane filtering device, a reverse water inlet valve is arranged on the seventh pipeline, and a cleaning device is also arranged on the second pipeline;

the water inlet valve, the forward concentrated water valve, the reverse water inlet valve, the reverse concentrated water valve and the water production valve are electrically connected with the PLC to realize the switching between the forward filtering mode and the reverse filtering mode.

Furthermore, the cleaning system comprises a cleaning water tank, a discharge port of the cleaning water tank is connected with the second pipeline through a fourth pipeline, a cleaning water inlet valve is arranged on the fourth pipeline, a cleaning concentrated water valve is arranged between a feed port of the cleaning water tank and a first discharge port of the membrane filtering device, a cleaning water producing valve is arranged between the first feed port of the cleaning water tank and the second discharge port of the membrane filtering device, and a discharge valve is arranged on the seventh pipeline.

Furthermore, a stock solution lift pump is arranged between the developing solution tank and the concentrated solution tank.

Further, a filtering high-pressure pump is arranged between the water inlet valve and the forward water inlet valve.

Further, the feed inlet of the membrane filtering device is provided with a water inlet pressure detector, and a second discharge outlet of the membrane filtering device is provided with a concentrated water pressure detector.

The invention has the beneficial effects that:

1. the circuit board developer circulation recovery system is provided with the forward filtering mode and the reverse filtering mode, and the PLC controller is used for alternately and automatically switching in the filtering process, so that the feed port is changed into the discharge port, and the discharge port is changed into the feed port, thereby avoiding the blockage of a filtering membrane in the membrane filtering device.

2. The circuit board developing solution recycling system filters the developing solution in real time, so that the pollution degree of the developing solution tank is greatly reduced, the filtered developing solution is reused, and the filtering cost is reduced.

3. The circuit board developer circulation recovery system is provided with the cleaning system, and a filtering membrane in the membrane filtering device is cleaned after shutdown every time, so that the phenomenon that the membrane is blocked due to deposition and accumulation of the glue residues after shutdown is prevented.

Drawings

FIG. 1 is a schematic diagram of a circuit board developer recycling system according to the present invention;

1-a developing solution tank, 2-a concentrated solution tank, 3-a cleaning solution tank, 4-a membrane filtering device, 5-a stock solution lift pump, 6-a filtering high-pressure pump, 7-a water inlet pressure detector, 8-a concentrated solution pressure detector, 10-a water inlet valve, 11-a forward water inlet valve, 12-a reverse concentrated solution valve, 13-a forward concentrated solution valve, 14-a water production valve, 15-a cleaning water production valve, 16-a cleaning concentrated solution valve, 17-a discharge valve, 18-a reverse water inlet valve, 19-a cleaning water inlet valve, 20-a water replenishing valve, 101-a first pipeline, 102-a second pipeline, 103-a third pipeline, 104-a fourth pipeline, 105-a fifth pipeline, 106-a sixth pipeline, 107-a seventh pipeline.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

A circuit board developer circulating recovery system comprises a developer tank 1, a discharge port of the developer tank 1 is connected with a feed port of a concentrated water tank 2 through a first pipeline 101, a stock solution lift pump 5 is installed on the first pipeline 101, a discharge port of the concentrated water tank 2 is connected with a feed port of a membrane filtering device 4 through a second pipeline 102, a water inlet valve 10, a filtering high-pressure pump 6 and a forward water inlet valve 11 are sequentially installed on the second pipeline 102, a first discharge port of the membrane filtering device 4 is connected with the feed port of the developer tank 1 through a sixth pipeline 106, a water production valve 14 is installed on the sixth pipeline 106, a second discharge port of the membrane filtering device 4 is connected with the feed port of the concentrated water tank 2 through a third pipeline 103, a forward concentrated water valve 13 is installed on the third pipeline 103, a fifth pipeline 105 is arranged between the second pipeline 102 and the third pipeline 103, and a reverse concentrated water valve 12 is installed on the fifth, a seventh pipeline 107 is arranged between the second pipeline 102 and the first discharge port of the membrane filtering device 4, and a reverse water inlet valve 18 is arranged on the seventh pipeline 107.

The water inlet valve 10, the forward water inlet valve 11, the forward concentrated water valve 13, the reverse water inlet valve 18, the reverse concentrated water valve 12 and the water production valve 14 are electrically connected with the PLC to realize the switching between the forward filtering mode and the reverse filtering mode.

The second pipeline 102 is also provided with a cleaning device, the cleaning system comprises a cleaning water tank 3, a discharge hole of the cleaning water tank 3 is connected with the second pipeline 102 through a fourth pipeline 104, a cleaning water inlet valve 19 is arranged on the fourth pipeline 104, a cleaning concentrated water valve 16 is arranged between a feed inlet of the cleaning water tank 3 and a first discharge hole of the membrane filtering device 4, a cleaning water producing valve 15 is arranged between a first feed inlet of the cleaning water tank 3 and a second discharge hole of the membrane filtering device 4, a discharge valve 17 is arranged on a seventh pipeline 107, and a water supplementing valve 20 is arranged at a second feed inlet outlet of the cleaning water tank 3.

And the cleaning concentrated water valve 16, the cleaning water production valve 15 and the discharge valve 17 are electrically connected with the PLC to realize a cleaning mode.

Membrane filter equipment 4 is provided with a feed inlet, first discharge gate and second discharge gate, membrane filter equipment 4 inside is provided with three-layer and above filtration membrane, it is provided with into water pressure detector 7 to go out at membrane filter equipment 4's feed inlet, be used for detecting into water pressure, it is provided with dense water pressure detector 8 to go out at membrane filter equipment 4's second discharge gate, be used for detecting the dense water pressure after filtering, it links to each other with PLC controller electrical property respectively to enter water pressure detector 7 and dense water pressure detector 8, PLC controller is according to the value of intaking water pressure detector 7 and dense water pressure detector 8, automatic selection forward filtering mode or reverse filtering mode or washing mode.

The working process is as follows:

1) forward filtering mode: and opening the water inlet valve 10, the forward water inlet valve 11, the forward concentrated water valve 13 and the water production valve 14, closing other valves, enabling the developing solution to flow from the developing solution tank 1 to the concentrated water tank 2 and the feed inlet of the membrane filtering device 4 in sequence through pipelines, filtering in the membrane filtering device 4, enabling the filtrate to flow out of the first discharge port of the membrane filtering device 4 and flow back to the developing solution tank 1 through the sixth pipeline 106, and enabling the concentrated solution to flow back to the concentrated water tank 2 through the second discharge port of the membrane filtering device 4 and the third pipeline 103.

2) In the reverse filtration mode, the water inlet valve 10, the reverse water inlet valve 18, the reverse concentrated water valve 12 and the water production valve 14 are opened, other valves are closed, the developing solution flows from the developing solution tank 1 to the concentrated water tank 2 through the pipeline, then flows to the second discharge port of the membrane filtration device 4 through the second pipeline 102 and the seventh pipeline 107, flows into the membrane filtration device 4 from the second discharge port of the membrane filtration device 4, after filtration in the membrane filtration device 4, the filtrate flows out from the first discharge port of the membrane filtration device 4, flows back to the developing solution tank 1 through the sixth pipeline 106, and the concentrated solution flows out from the feed port of the membrane filtration device 4, and flows back to the concentrated water tank 2 through the fifth pipeline 105 and the third pipeline 103.

3) Cleaning mode

During cleaning, the cleaning water inlet valve 19, the cleaning water outlet valve 15 and the cleaning concentrate valve 16 are opened, the other valves are closed, and water flows out from the first discharge port of the membrane filtration device 4 through the fourth pipe 104 and the second pipe 102 from the water outlet of the cleaning water tank 3 and flows back to the cleaning water tank 3.

When it is required to discharge the water of the wash tank 3, the wash water inlet valve 19 and the discharge valve 17 are opened, and the water flows out of the wash tank 3, passes through the fourth pipe 104, the second pipe 102, and the seventh pipe 107 in this order, and is finally discharged through the discharge valve 17. After the discharge is finished, all the valves are closed, the water replenishing valve 20 is opened, and water is added into the cleaning water tank 3.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.