A purification treatment device for waste liquid from circuit board etching

Abstract

The present invention discloses a purification treatment device for circuit board etching waste liquid, which is characterized in that: the purification treatment device includes a water inlet pipe, a solar heating component, an intermittent pressurization component, a water spray suction hood, a heat dissipation seat and a recovery device; the etched waste liquid is directly discharged into the water inlet pipe after filtration; the water inlet pipe is communicated with the inlet of the solar heating component; the etched waste liquid enters the intermittent pressurization component after being preheated by the solar heating component; the intermittent pressurization component pressurizes the etched waste liquid and inputs the etched waste liquid into the water spray suction hood every once in a while; the water spray suction hood covers the upper part of the heat dissipation seat, the surface temperature of the heat dissipation seat is 200-300 °C, and the water spray suction hood sprays the etched waste liquid on the surface of the heat dissipation seat every once in a while. The present application realizes the purpose of recovering solid metal by means of preheating and heating, quickly evaporates water, and leaves solid metal, with high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of etching solution recovery equipment, and specifically to a purification treatment device for circuit board etching waste liquid. Background Art

[0002] Currently, the treatment of acidic etching waste liquid mainly involves converting copper ions in the acidic etching waste liquid into basic copper carbonate. During the process of obtaining the finished product of basic copper carbonate, centrifugal separation of basic copper carbonate is required. However, the separated liquid after centrifugation still contains a relatively large amount of basic copper carbonate, and this part of the separated liquid needs to be further separated. The conventional method is to obtain basic copper carbonate by static settling.

[0003] In the prior art 201911426018.7, a purification device for recovering basic copper carbonate from acidic etching waste liquid and its use method, by using a circulating precipitation tank and a membrane filter in combination, circulates and concentrates the separated liquid in the circulating precipitation tank for filtration, continuously reducing the liquid volume in the circulating precipitation tank, accelerating the precipitation rate of basic copper carbonate in the separated liquid, improving the precipitation efficiency, increasing the number of centrifugations, avoiding damage to the membrane filter, saving separation time, and increasing the treatment efficiency of acidic etching waste liquid per unit time. This method has obvious recovery effects and can further purify the separated liquid. Since these separated liquids have already been treated once, the effect of static settling and filtration again is not good, and the number of circulations is large. Therefore, a new method is needed to treat the separated liquid to obtain solid products. Summary of the Invention

[0004] The purpose of the present invention is to provide a purification treatment device for circuit board etching waste liquid, which solves the problem of poor recovery effect of the filtered etching solution.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A purification treatment device for circuit board etching waste liquid, the purification treatment device includes a water inlet pipe, a solar heating component, an intermittent pressurization component, a water spray and air suction hood, a heat dissipation seat, and a recovery device;

[0006] The etched waste liquid is directly discharged into the water inlet pipe after filtration;

[0007] The water inlet pipe is communicated with the inlet of the solar heating component;

[0008] The etched waste liquid enters the intermittent pressurization component after being preheated by the solar heating component;

[0009] The intermittent pressurization component pressurizes the etched waste liquid and inputs the etched waste liquid into the water spray and air suction hood at regular intervals;

[0010] The water spray suction hood covers the upper part of the heat dissipation base. The surface temperature of the heat dissipation base is 200 - 300 °C. The water spray suction hood sprays etching waste liquid onto the surface of the heat dissipation base at regular intervals and provides negative pressure to absorb water vapor. The first part of the water vapor is input into the intermittent pressurizing component, and the second part is output outward through the drain pipe. The drain pipe exchanges heat with the water inlet pipe;

[0011] The recycling device recycles the mixture left on the surface of the heat dissipation base.

[0012] Furthermore, the solar heating component includes a bracket, a heating pipe, a reflector, and a water collecting pipe. The cross-section of the reflector is arc-shaped, and multiple reflectors are arranged in parallel on the top surface of the bracket. The top surface of the bracket is inclined upward. The heating pipe is mounted on the reflector. The heating pipe includes a corrosion-resistant glass outer pipe and an arc-shaped partition. The arc-shaped partition is horizontally arranged inside the corrosion-resistant glass outer pipe. Filter holes are provided on the arc-shaped partition. The water collecting pipe is communicated with the outlet of the heating pipe, and the water inlet pipe is detachably connected to the inlet of the heating pipe.

[0013] Furthermore, the intermittent pressurizing component includes a circular cylinder body, a rotating partition, an inner lining ring, and an outer lining ring. The rotating partition includes a rotating shaft and four single partitions arranged in an array on the circumferential surface of the rotating shaft. The four single partitions are slidably matched with the inner side surface of the circular cylinder body. The outlet end of the water collecting pipe has two outlets, which are respectively arranged at the upper left and lower right sides of the circular cylinder body. The outlet end of the first part of the water vapor has two outlets, which are respectively arranged at the lower left and upper right sides of the circular cylinder body. The inner lining ring is arranged on the inner side surface of the circular cylinder body. Notches are provided on the single partitions. The outer lining ring is arranged on the notches of the single partitions. The outer lining ring is in contact with the inner lining ring, and both the outer lining ring and the inner lining ring are made of wear-resistant and corrosion-resistant metal materials. Two outlets are provided on the circular cylinder body.

[0014] Furthermore, the water spray suction hood includes a hood body, a suction fan, a first pipe, and a second pipe. The first pipe is communicated with the two outlets of the circular cylinder body, and the outlet of the first pipe is arranged on the hood body. Multiple liquid discharge holes for discharging liquid are provided on the hood body. The inlet end of the second pipe is arranged on the hood body. The suction fan is communicated with the second pipe to provide negative pressure. Multiple air inlet holes are provided on the hood body. The outlet of the second pipe has two paths, one for transporting the first part of the water vapor and the other for transporting the second part of the water vapor.

[0015] Furthermore, the heat dissipation base includes a metal base body, a heating component, and an annular groove. The heating component is arranged inside the metal base body to provide a heat source. The annular groove is arranged at the bottom of the outer side surface of the metal base body.

[0016] Further, the inlet of the recovery device is communicated with the annular groove.

[0017] Beneficial effects:

[0018] The present application realizes the purpose of recovering solid metal by means of preheating and heating, quickly evaporates water, and leaves solid metal, with high efficiency. The present application preheats through solar energy, makes full use of the principle of heat recovery, and realizes the purpose of water evaporation with less energy. For the filtered etching waste liquid, the required metal can be directly obtained after heating, the operation is simple, and the water vapor is still purified after cooling, which is easy to promote. Description of the drawings

[0019] Figure 1 It is a schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the heating tube of the present invention;

[0021] Figure 3 It is a schematic diagram of the intermittent pressurizing component of the present invention;

[0022] Figure 4 It is a sectional view of the intermittent pressurizing component of the present invention;

[0023] Figure 5 It is a combined schematic diagram of the water spray suction hood and the heat dissipation seat of the present invention;

[0024] Figure 6 It is a top view of the heat dissipation seat and the recovery device of the present invention;

[0025] Figure 7 It is a top view of the heat dissipation seat of the present invention;

[0026] Figure 8 It is a bottom view of the water spray suction hood of the present invention.

[0027] In the figure: water inlet pipe - 1, solar heating component - 2, intermittent pressurizing component - 3, water spray suction hood - 4, heat dissipation seat - 5, recovery device - 6, support - 7, heating tube - 8, reflector - 9, water collecting pipe - 10, corrosion-resistant glass outer tube - 11, arc-shaped partition - 12, circular cylinder - 13, rotating partition - 14, inner lining ring - 15, outer lining ring - 16, rotating shaft - 17, monomer partition - 18, outlet - 19, hood body - 20, exhaust fan - 21, first pipe - 22, second pipe - 23, liquid discharge hole - 24, air inlet hole - 25, metal seat body - 26, annular groove - 27. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention 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 should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] Please refer to the accompanying drawings. An embodiment provided by the present invention is a purification treatment device for circuit board etching waste liquid. The purification treatment device includes a water inlet pipe 1, a solar heating component 2, an intermittent pressurization component 3, a water spray and air suction hood 4, a heat dissipation seat 5, and a recovery device 6;

[0032] The etched waste liquid is directly discharged into the water inlet pipe 1 after filtration;

[0033] The water inlet pipe 1 is connected to the inlet of the solar heating component 2. The solar heating component 2 includes a bracket 7, a heating pipe 8, a reflector 9 and a water collecting pipe 10. The cross-section of the reflector 9 is arc-shaped, and multiple reflectors are arranged in parallel on the top surface of the bracket 7. The top surface of the bracket 7 is inclined upward. The heating pipe 8 is mounted on the reflector 9. The heating pipe 8 includes a corrosion-resistant glass outer tube 11 and an arc-shaped partition 12. The arc-shaped partition 12 is horizontally arranged in the corrosion-resistant glass outer tube 11. Filter holes are formed in the arc-shaped partition 12. The water collecting pipe 10 is connected to the outlet of the heating pipe 8. The water inlet pipe 1 is detachably connected to the inlet of the heating pipe 8. The filtered etching waste liquid slides upward from the bottom of the heating pipe 8. The reflector 9 reflects light onto the arc-shaped partition 12. The arc-shaped partition 12 is heated to heat the waste liquid, achieving preheating. The heating area of the arc-shaped partition 12 is larger. It is worth reminding that filter holes are provided on the arc-shaped partition 12. When the etching waste liquid rises, the metal particles contained therein fall by gravity below the arc-shaped partition 12, similar to the purpose of static settlement. At the same time, because the metal particles are located between the arc-shaped partition 12 and the reflector 9, the metal particles themselves can be heated, which does not affect the solar heating effect. After a certain amount of metal particles exist between the breathing pipe partition 12 and the reflector 9, they can be discharged through the connection between the heating pipe 8 and the water inlet pipe 1, increasing the efficiency of obtaining metal particles.

[0034] The etched waste liquid enters the intermittent pressurizing component 3 after being preheated by the solar heating component 2. The intermittent pressurizing component 3 includes a circular cylinder 13, a rotating partition 14, an inner lining ring 15 and an outer lining ring 16. The rotating partition 14 includes a rotating shaft 17 and four monomer partitions 18 arranged in an array on the circumferential surface of the rotating shaft 17. The four monomer partitions 18 are slidably matched with the inner side surface of the circular cylinder 13. The outlet end of the water collecting pipe 10 has two, which are respectively arranged at the upper left and lower right sides of the circular cylinder 13. The outlet end of the first part of the water vapor has two, which are respectively arranged at the lower left and upper right sides of the circular cylinder 13. The inner lining ring 15 is arranged on the inner side surface of the circular cylinder 13. The monomer partition 18 is provided with a notch. The outer lining ring 16 is arranged on the notch of the monomer partition 18. The outer lining ring 16 is in contact with the inner lining ring 15, and both the outer lining ring 16 and the inner lining ring 15 are made of wear-resistant and corrosion-resistant metal materials. Two outlets 19 are arranged on the circular cylinder 13. It should be noted that the power provided by the water output of the water collecting pipe 10 and the power provided by the gas output of the first part of the water vapor cooperate to make the monomer partition 18 rotate. The entry of the water vapor preheats the etched waste liquid again through the heat release of the water vapor. On the other hand, the purpose of aeration is realized. The purpose of aeration here is to enable the metal particles to be fully mixed in the etched waste liquid, reduce the possibility of metal particles clustering, reduce the possibility of metal particles blocking the drain holes of the water spray and air suction hood 4, and also realize the pressurization purpose. It should be noted that the above water vapor contains more carbon dioxide than air, and these carbon dioxides are obtained by heating basic copper carbonate, which improves the pressurization effect. When the monomer partition 18 rotates, heat is generated by the friction between the outer lining ring 16 and the inner lining ring 15, which improves the heating effect. When the etched wastewater is discharged between the monomer partitions 18 and the water vapor enters it, after the etched wastewater reaches a certain amount, it is discharged from the outlet 19 to realize the purpose of intermittent drainage and pressurization.

[0035] The intermittent pressurizing component 3 pressurizes the etched waste liquid and inputs the etched waste liquid into the water spray and air suction hood 4 every once in a while. The water spray and air suction hood 4 includes a hood body 20, a suction fan 21, a first pipe 22 and a second pipe 23. The first pipe 22 is communicated with the two outlets of the circular cylinder 13, and the outlet of the first pipe 22 is arranged on the hood body 20. A plurality of drain holes 24 for liquid discharge are opened on the hood body 20. The inlet end of the second pipe 23 is arranged on the hood body 20. The suction fan 21 is communicated with the second pipe 23 to provide negative pressure. A plurality of air inlet holes 25 are arranged on the hood body 20. The outlet of the second pipe 23 has two paths, one path conveys the first part of the water vapor, and one path conveys the second part of the water vapor. The second part of the water vapor exchanges heat with the water inlet pipe 1 through the pipe.

[0036] The water spray and suction hood 4 covers the upper part of the heat dissipation base 5. The surface temperature of the heat dissipation base 5 is 200 - 300 °C. The water spray and suction hood 4 sprays etching waste liquid onto the surface of the heat dissipation base 5 at regular intervals and provides negative pressure to absorb water vapor. The first part of the water vapor is input into the intermittent pressurizing component 3, and the second part is output outward through the drain pipe. The drain pipe exchanges heat with the water inlet pipe 1. The heat dissipation base 5 includes a metal base body 26, a heating component (not shown), and an annular groove 27. The heating component is arranged inside the metal base body 26 to provide heat source. The annular groove 27 is arranged at the bottom of the outer side surface of the metal base body 26. The inlet of the recovery device 6 is communicated with the annular groove 27.

[0037] The recovery device 6 recovers the mixture remaining on the surface of the heat dissipation base 2. The recovery device 6 can be realized by a screw conveyor or a pump.

[0038] Working principle:

[0039] The filtered etching waste liquid enters from the water inlet pipe 1. During the input process, it slides upward from the bottom of the heating pipe 8, achieving the first preheating during this period, and also realizing the precipitation of some metal particles. Then the etching wastewater flows into the intermittent pressurizing component, achieving the second preheating and the third preheating, and also achieving pressurization. At regular intervals, the preheated and pressurized etching wastewater is sprayed onto the metal base body 26. While the water evaporates, part of the basic copper carbonate reacts and precipitates when heated. The precipitated metal particles are recovered by the recovery device 6.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A purification treatment device for printed circuit board etching waste liquid, characterized in that: The purification treatment device includes a water inlet pipe, a solar heating component, an intermittent pressurization component, a water spray and air suction hood, a heat dissipation seat and a recovery device; the etched waste liquid is directly discharged into the water inlet pipe after filtration; the water inlet pipe is communicated with the inlet of the solar heating component; the etched waste liquid enters the intermittent pressurization component after being preheated by the solar heating component; the intermittent pressurization component pressurizes the etched waste liquid and inputs the etched waste liquid into the water spray and air suction hood at regular intervals; the water spray and air suction hood covers the upper part of the heat dissipation seat, the surface temperature of the heat dissipation seat is 200-300 °C, the water spray and air suction hood sprays the etched waste liquid on the surface of the heat dissipation seat at regular intervals, and provides negative pressure to absorb water vapor, the first part of the water vapor is input into the intermittent pressurization component, and the second part is output outward through a drain pipe, and the drain pipe exchanges heat with the water inlet pipe; The recovery device recovers the mixture left on the surface of the heat dissipation seat; The solar heating component includes a bracket, a heating pipe, a reflector and a water collecting pipe. The cross section of the reflector is arc-shaped, and multiple reflectors are arranged in parallel on the top surface of the bracket. The top surface of the bracket is inclined upward. The heating pipe is erected on the reflector. The heating pipe includes a corrosion-resistant glass outer tube and an arc-shaped partition. The arc-shaped partition is horizontally arranged in the corrosion-resistant glass outer tube. The arc-shaped partition is provided with filter holes. The water collecting pipe is communicated with the outlet of the heating pipe. The water inlet pipe is detachably connected to the inlet of the heating pipe; The intermittent pressurization component includes a circular cylinder body, a rotating partition, an inner lining ring and an outer lining ring. The rotating partition includes a rotating shaft and four single partitions arranged in an array on the circumferential surface of the rotating shaft. The four single partitions are slidably matched with the inner side surface of the circular cylinder body. The outlet end of the water collecting pipe has two, which are respectively arranged at the upper left and lower right sides of the circular cylinder body. The outlet end of the first part of the water vapor has two, which are respectively arranged at the lower left and upper right sides of the circular cylinder body. The inner lining ring is arranged on the inner side surface of the circular cylinder body. The single partition is provided with a notch. The outer lining ring is arranged on the notch of the single partition. The outer lining ring is in contact with the inner lining ring, and both the outer lining ring and the inner lining ring are made of wear-resistant and corrosion-resistant metal materials. The circular cylinder body is provided with two outlets.

2. A purification treatment device for printed circuit board etching waste liquid according to claim 1, characterized in that: The water spray and air suction hood includes a hood body, a suction fan, a first pipe and a second pipe. The first pipe is communicated with the two outlets of the circular cylinder body, and the outlet of the first pipe is arranged on the hood body. The hood body is provided with a plurality of liquid discharge holes for liquid discharge. The inlet end of the second pipe is arranged on the hood body. The suction fan is communicated with the second pipe to provide negative pressure. The hood body is provided with a plurality of air inlet holes. The outlet of the second pipe has two paths, one path conveys the first part of the water vapor and the other path conveys the second part of the water vapor.

3. A purification treatment device for printed circuit board etching waste liquid according to claim 2, characterized in that: The described heat dissipation base includes a metal base body, a heating component, and an annular groove. The heating component is arranged inside the metal base body to provide a heat source, and the annular groove is arranged at the bottom of the outer side surface of the metal base body.

4. A purification treatment device for waste etching solution of a circuit board according to claim 3, characterized in that: The inlet of the recovery device is communicated with the annular groove.

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