CN215388749U

CN215388749U - Filter system is used in special chemicals production of environment-friendly electron

Info

Publication number: CN215388749U
Application number: CN202121249393.1U
Authority: CN
Inventors: 孔庆山; 裴玉仁
Original assignee: Dexing Chemical Suzhou Co ltd
Current assignee: Dexing Chemical Suzhou Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-01-04
Anticipated expiration: 2031-06-05

Abstract

The utility model relates to a filtering system for producing environment-friendly electronic special chemicals, which comprises a reaction tank, an impurity concentration tank, a filtering pump, a tubular membrane filtering device, a product tank, a working pump and a product packaging barrel, wherein the reaction tank is connected with the impurity concentration tank; the impurity concentration tank is arranged below the reaction tank; the filter pump is used for conveying the chemical plating solution in the impurity concentration tank to a water inlet of the tubular membrane filter device; a concentrated solution outlet of the tubular membrane filtering device is communicated with the impurity concentration tank, and a filtrate outlet is communicated with the product tank; the working pump is used for sending the chemical plating solution in the product groove to a product packaging barrel; a back washing pipeline is also arranged between the water outlet of the working pump and the filtrate outlet of the tubular membrane filtering device; the utility model can not only effectively filter out fine solid particles in the chemical plating solution, but also can ensure the quality of the chemical plating solution without adopting external clear water when the tubular membrane filter device is backwashed.

Description

Filter system is used in special chemicals production of environment-friendly electron

Technical Field

The utility model relates to the field of production of chemicals special for electronics, in particular to an environment-friendly filtering system for production of chemicals special for electronics.

Background

The Electroless plating is also called Electroless plating (electroplating), and may also be called autocatalytic plating, and the specific process is as follows: a process in which metal ions in an aqueous solution are reduced by a reducing agent under certain conditions and precipitated onto the surface of a solid substrate; if fine solid particles exist in the plating solution, the plating solution becomes a catalytic reduction center, the particles on the workpiece are quickly reduced and consumed, and the plating solution can quickly lose efficacy and be scrapped; therefore, the electroless plating solution needs to be filtered for fine solid particles after production; although tubular membrane filters have also appeared in the market, like the membrane device for organic tubular membrane waste acid recovery filtration treatment system disclosed in prior art 202021149940.4, the disc tubular reverse osmosis membrane cleaning system disclosed in prior art 202020047488.4, the organic tubular membrane waste acid recovery filtration treatment system disclosed in prior art 202021149938.7, prior art all cleans through outside clear water when cleaning tubular membranes, not only greatly wastes water resources, but also the clear water remaining in tubular membrane filters can cause influence to the electroless plating solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an environment-friendly filter system for producing electronic special chemicals.

In order to achieve the purpose, the utility model adopts the technical scheme that: a filtering system for producing environment-friendly electronic special chemicals comprises a reaction tank, an impurity concentration tank, a filtering pump, a tubular membrane filtering device, a product tank, a working pump and a product packaging barrel; the impurity concentration tank is arranged below the liquid outlet of the reaction tank; the filter pump is used for conveying the chemical plating solution in the impurity concentration tank to a water inlet of the tubular membrane filter device; a concentrated solution outlet of the tubular membrane filtering device is communicated with the impurity concentration tank through a concentrated solution pipeline, and a filtrate outlet is communicated with the product tank through a filtrate pipeline; the working pump is used for sending the chemical plating solution in the product groove to a product packaging barrel; a back washing pipeline is also arranged between the water outlet of the working pump and the filtrate outlet of the tubular membrane filtering device; a back washing valve is arranged on the back washing pipeline; a filtrate valve is arranged on the filtrate pipeline; a switch valve is arranged between the working pump and the product packaging barrel; the back washing valve, the filtering liquid valve and the switch valve are arranged in parallel.

Preferably, a plurality of filter elements which are in S-shaped end-to-end connection are arranged in the tubular membrane filtering device.

Preferably, the filter element adopts a hydrophilic PVDF tubular microfiltration membrane, and the membrane aperture is 0.1-1 μm.

Preferably, the diameter of the water inlet in the tubular membrane filter device is larger than that of the concentrated solution outlet.

Preferably, a pressure gauge for detecting water pressure is arranged between the water outlet of the filter pump and the water inlet of the tubular membrane filtering device.

Preferably, a flow meter is arranged at the water outlet of the working pump.

Preferably, liquid level sensors are arranged in the impurity concentration tank and the product tank.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model can not only effectively filter out fine solid particles in the chemical plating solution, but also can ensure the quality of the chemical plating solution without adopting external clear water when the tubular membrane filter device is backwashed.

Drawings

The technical scheme of the utility model is further explained by combining the accompanying drawings as follows:

FIG. 1 is a schematic structural diagram of a filtration system for producing environment-friendly electronic special chemicals according to the present invention;

FIG. 2 is a schematic connection diagram of the filter element inside the tubular membrane filtration device of the present invention.

Wherein: 1. a reaction tank; 2. an impurity concentration tank; 3. a filter pump; 4. a pressure gauge; 5. a tubular membrane filtration device; 51. a filter element; 6. a concentrate line; 7. a filtrate line; 8. a filtrate valve; 9. back flushing the pipeline; 10. a back-flushing valve; 11. an on-off valve; 12. a product tank; 13. a working pump; 14. a flow meter; 15. and (5) packaging the product into a packaging barrel.

Detailed Description

The utility model is described in further detail below with reference to the figures and the embodiments.

Fig. 1-2 show a filtration system for producing environment-friendly electronic special chemicals, which comprises a reaction tank 1, an impurity concentration tank 2, a filtration pump 3, a tubular membrane filtration device 5, a product tank 12, a working pump 13 and a product packaging barrel 15; the impurity concentration tank 2 is arranged below the liquid outlet of the reaction tank 1; the filter pump 3 is used for conveying the chemical plating solution in the impurity concentration tank 2 to a water inlet of the tubular membrane filter device 5; a concentrated solution outlet of the tubular membrane filtering device 5 is communicated with the impurity concentration tank 2 through a concentrated solution pipeline 6, and a filtrate outlet is communicated with a product tank 12 through a filtrate pipeline 7; the working pump 13 is used for sending the chemical plating solution in the product tank 12 to the product packaging barrel 15; a back washing pipeline 9 is also arranged between the water outlet of the working pump 13 and the filtrate outlet of the tubular membrane filtering device 5; a back washing valve 10 is arranged on the back washing pipeline 9; a filtrate valve 8 is arranged on the filtrate pipeline 7; a switch valve 11 is arranged between the working pump 13 and the product packaging barrel 15; the back washing valve 10, the filtrate valve 8 and the switch valve 11 are arranged in parallel; when in work: the reaction tank 1 firstly discharges the stirred electroless plating solution into an impurity concentration tank 2 for precipitation, then a filter pump 3 sends the electroless plating solution precipitated in the impurity concentration tank 2 to a water inlet of a tubular membrane filtering device 5, at the moment, a filter solution valve 8 and a switch valve 11 are in an open state, a back flush valve 10 is in a closed state, when the electroless plating solution passes through the tubular membrane filtering device 5, a cross flow filtering principle is adopted, the electroless plating solution without impurities is discharged into a product tank 12 through a filter solution outlet, the concentrated electroless plating solution is discharged into the impurity concentration tank 2 through a concentrated solution outlet, the circular filtration is continued, and finally a working pump 13 sends the electroless plating solution without impurities in the product tank 12 to a product 15 for storage; when the tubular membrane filtering device 5 needs to be cleaned, the backwashing valve 10 is opened, the filtering liquid valve 8 and the switch valve 11 are closed, the chemical plating solution without impurities in the product tank 12 is sent into the tubular membrane filtering device 5 through the working pump 13, the tubular membrane filtering device 5 is subjected to backwashing, external clear water is not needed, water resources are greatly saved, and the quality of the chemical plating solution is guaranteed.

Furthermore, a plurality of filter elements 51 which are connected end to end in an S shape are arranged in the tubular membrane filtering device 5, so that the filtering effect can be greatly improved, the structure is compact, and the occupied area is reduced.

Furthermore, the filter element 51 adopts a hydrophilic PVDF tubular microfiltration membrane, the membrane aperture is 0.1-1 μm, the material not only can effectively ensure the filtering effect of the electroless plating solution and remove more than 98% of impurities in the electroless plating solution, but also the service life of the filter element 51 can reach more than 2 years.

Further, the diameter of the water inlet in the tubular membrane filtering device 5 is larger than that of the concentrated solution outlet; during filtering, the diameter difference between the water inlet and the concentrated solution outlet is utilized, so that the water pressure in the filter element 51 can be increased, the permeation is accelerated, and the filtering efficiency is improved.

Further, be provided with between the delivery port of filter pump 3 and the water inlet of tubular membrane filtration device 5 and be used for detecting hydraulic manometer 4, the staff of being convenient for judges tubular membrane filtration device 5's jam condition through manometer 4, washs the work.

Further, the delivery port of working pump 13 is provided with flowmeter 14, can not only realize the flow detection to product packaging barrel 15, and can detect the chemical plating solution that washs tubular membrane filter equipment 5, the automated control of being convenient for.

Further, all be provided with level sensor in impurity concentrate tank 2 and the product tank 12, when the liquid level in impurity concentrate tank 2 was higher than and sets for the liquid level, then control retort 1 and stop the flowing back, when the liquid level in the product tank 12 was higher than and sets for the liquid level, then control the stop work of filter pump 3, the automated control of being convenient for.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a filtration system is used in production of special chemicals of environment-friendly electron which characterized in that: comprises a reaction tank, an impurity concentration tank, a filter pump, a tubular membrane filter device, a product tank, a working pump and a product packaging barrel; the impurity concentration tank is arranged below the liquid outlet of the reaction tank; the filter pump is used for conveying the chemical plating solution in the impurity concentration tank to a water inlet of the tubular membrane filter device; a concentrated solution outlet of the tubular membrane filtering device is communicated with the impurity concentration tank through a concentrated solution pipeline, and a filtrate outlet is communicated with the product tank through a filtrate pipeline; the working pump is used for sending the chemical plating solution in the product groove to a product packaging barrel; a back washing pipeline is also arranged between the water outlet of the working pump and the filtrate outlet of the tubular membrane filtering device; a back washing valve is arranged on the back washing pipeline; a filtrate valve is arranged on the filtrate pipeline; a switch valve is arranged between the working pump and the product packaging barrel; the back washing valve, the filtering liquid valve and the switch valve are arranged in parallel.

2. The environment-friendly electronic special chemical production filter system according to claim 1, characterized in that: and a plurality of filter elements which are in S-shaped end-to-end connection are arranged in the tubular membrane filtering device.

3. The environment-friendly electronic special chemical production filter system according to claim 2, characterized in that: the filter element adopts a hydrophilic PVDF tubular microfiltration membrane, and the membrane aperture is 0.1-1 μm.

4. The environment-friendly electronic special chemical production filter system according to claim 3, characterized in that: the diameter of a water inlet in the tubular membrane filtering device is larger than that of a concentrated solution outlet.

5. The filtration system for the production of environment-friendly electronic special chemicals according to any one of claims 1 to 4, wherein: and a pressure gauge for detecting water pressure is arranged between the water outlet of the filter pump and the water inlet of the tubular membrane filtering device.

6. The environment-friendly electronic special chemical production filter system according to claim 5, wherein: and a water outlet of the working pump is provided with a flow meter.

7. The environment-friendly electronic special chemical production filter system according to claim 6, wherein: and liquid level sensors are arranged in the impurity concentration tank and the product tank.