PCB (printed circuit board) micro-etching liquid cyclic regeneration equipment

Abstract

The utility model discloses PCB micro-etching liquid cyclic regeneration equipment which comprises a main box body, the upper part of the main box body is fixedly connected with a shower box body, the right side of the main box body is fixedly connected with a lengthened box body, the front side of the shower box body is connected with a first filtering drawer through a bolt, and the front side of the lengthened box body is connected with a second filtering drawer through a bolt. An evaporative crystallization metal plate is rotatably connected to the interior of the main box body through a hollow rotating shaft, the hollow rotating shaft penetrates through the interior of the evaporative crystallization metal plate and is welded to the evaporative crystallization metal plate, and a heating rod is fixedly connected to the interior of the hollow rotating shaft. According to the device, valuable metal components in the micro-etching liquid are effectively separated and recycled by adopting the evaporative crystallization metal plate and the heating rod, so that the consumption of raw materials is reduced, the resource utilization rate is improved, and meanwhile, the environmental pollution is also reduced. By arranging the second filtering drawer, fine particle impurities are further removed in the micro-etching liquid cyclic regeneration process, it is ensured that the regenerated micro-etching liquid reaches the use standard, and the PCB machining quality and efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of recycling equipment, and in particular relates to a recycling equipment for PCB micro-etching liquid. Background Art

[0002] During the manufacturing process of printed circuit boards (PCBs), the micro-etching process is crucial for improving the quality and performance of PCBs. Traditional micro-etching liquid treatment methods usually adopt a one-time use method, which not only wastes resources but also increases production costs and the risk of environmental pollution. In recent years, with the increasing awareness of environmental protection and technological advancements, the recycling and regeneration technology of PCB micro-etching liquid has developed rapidly. Currently, there are some mature micro-etching liquid recycling and regeneration systems on the market, which mainly achieve the purification and regeneration of micro-etching liquid through physical filtration, chemical precipitation, electrolytic decontamination and other methods. However, these traditional regeneration systems generally have problems such as low efficiency, high energy consumption, and unstable regeneration liquid quality, which limit their application in actual production.

[0003] Most existing PCB micro-etching fluid recycling and regeneration equipment struggles to effectively remove impurities such as solid particles and dissolved metal ions from the micro-etching fluid. This results in poor quality of the regenerated micro-etching fluid, which in turn affects the etching precision and surface quality of the PCB. Furthermore, due to the lack of effective evaporation and crystallization devices, conventional equipment often fails to efficiently separate and recover valuable metal components, resulting in a waste of resources. Therefore, we propose a PCB micro-etching fluid recycling and regeneration device. Utility Model Content

[0004] In response to the problems existing in the prior art, the purpose of the utility model is to provide a PCB micro-etching liquid recycling and regeneration equipment. By providing a spray device, the micro-etching liquid in the micro-etching working cylinder can be introduced and sprayed out. After passing through the first filter drawer, it crystallizes on the surface of the evaporation crystallization metal plate. After rotation, it can be scraped off by a scraper and collected in the second filter drawer. The recycled and regenerated micro-etching liquid can be returned to the micro-etching working cylinder through a water pump for recycling.

[0005] The utility model is implemented as follows: a PCB micro-etching liquid recycling and regeneration device includes a main box body, the upper part of the main box body is fixedly connected to a shower box body, the right side of the main box body is fixedly connected to an extended box body, the front side of the shower box body is connected to a first filter drawer by bolts, the interior of the main box body is rotatably connected to an evaporation crystallization metal plate through a hollow rotating shaft, the hollow rotating shaft passes through the interior of the evaporation crystallization metal plate and is welded thereto, the interior of the hollow rotating shaft is fixedly connected to a heating rod, the upper part of the extended box body is fixedly connected to a cylinder, the piston rod of the cylinder passes through the interior of the main box body, the end of the piston rod of the cylinder is fixedly connected to a tool holder, the upper part of the tool holder is connected to a scraper by bolts, and the front side of the main box body is connected to a second filter drawer by bolts.

[0006] Optionally, a liquid inlet pipe is fixedly connected to the upper portion of the shower box, and a shower head is fixedly connected to the lower portion of the liquid inlet pipe.

[0007] Optionally, a motor mounting bracket is fixedly connected to the left side of the main box, and a stepping motor is fixedly connected to the motor mounting bracket.

[0008] Optionally, the output shaft of the stepper motor is fixedly connected to a worm gear, and the left side of the hollow shaft is fixedly connected to a worm.

[0009] Optionally, a gear box is fixedly connected to the left side of the main housing, and the worm wheel and worm are installed inside the gear box.

[0010] Optionally, a brush holder is fixedly connected to the right side wall of the main box body, a brush is fixedly connected to the front side of the brush holder, and the brush is electrically connected to the heating rod.

[0011] Optionally, a leak-proof sleeve is fixedly connected to the right side wall of the main box body, a rubber ring is provided inside the leak-proof sleeve, and the leak-proof sleeve is sleeved on the outside of the hollow rotating shaft.

[0012] Optionally, the bottoms of the first filter drawer and the second filter drawer are both hollow, a first filter net is fixedly connected to the bottom of the first filter drawer, and a second filter net is fixedly connected to the bottom of the second filter drawer.

[0013] Optionally, the mesh number of the first filter screen is smaller than the mesh number of the second filter drawer, and a smooth platform is provided at the lower portion of the first filter drawer, and the smooth platform is welded to the shower box body.

[0014] Optionally, a water pump is connected to the rear of the extended box body, and an outlet of the water pump is connected to a water outlet connecting pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By setting up the shower box and the first filter drawer, the micro-etching liquid entering the system is initially filtered, removing most of the larger solid particles, ensuring the smooth operation of the subsequent treatment process and improving the stability and reliability of the overall equipment.

[0017] 2. The use of evaporative crystallization metal plates and heating rods allows for the effective separation and recovery of valuable metal components in the micro-etching solution, reducing raw material consumption, improving resource utilization, and minimizing environmental pollution. A second filter drawer is installed to further remove fine impurities during the micro-etching solution regeneration process, ensuring that the regenerated micro-etching solution meets usage standards, thereby improving PCB processing quality and efficiency.

[0018] 3. The precise rotation control of the evaporated crystallized metal plate is achieved by adopting a stepper motor and a worm gear transmission mechanism. After the rotation, the scraper can be driven by the cylinder to scrape it.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a first perspective structural diagram provided by the utility model;

[0021] Figure 2 This is a second perspective diagram provided by the present invention;

[0022] Figure 3 It is a half-section schematic diagram provided by the utility model;

[0023] Figure 4 This is the first explosion diagram provided by the utility model;

[0024] Figure 5 This is the second explosion diagram provided by the utility model;

[0025] Figure 6 This is a schematic diagram of the evaporation crystallization metal plate provided by the present invention;

[0026] Figure 7 It is a right-side structural schematic diagram provided by the utility model.

[0027] In the figure: 1. Shower box; 2. Leak-proof sleeve; 3. Smooth table; 4. First filter drawer; 5. Main box; 6. Liquid inlet pipe; 7. Second filter drawer; 8. Extended box; 9. Water pump; 10. Cylinder; 11. Motor mounting bracket; 12. Gear box; 13. Sprinkler head; 14. First filter; 15. Evaporation crystallization metal plate; 16. Second filter; 17. Scraper; 18. Stepper motor; 19. Worm gear; 20. Worm; 21. Heating rod; 22. Hollow shaft; 23. Brush; 24. Brush holder. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 7 As shown, an embodiment of the present utility model provides a PCB micro-etching liquid recycling and regeneration device.

[0030] It includes a main box body 5, the upper part of the main box body 5 is fixedly connected to the shower box body 1, the right side of the main box body 5 is fixedly connected to the extension box body 8, the front side of the shower box body 1 is connected to the first filter drawer 4 by bolts, the interior of the main box body 5 is rotatably connected to the evaporation crystallization metal plate 15 through a hollow rotating shaft 22, the hollow rotating shaft 22 passes through the interior of the evaporation crystallization metal plate 15 and is welded to it, the interior of the hollow rotating shaft 22 is fixedly connected to the heating rod 21, the upper part of the extension box body 8 is fixedly connected to the cylinder 10, the piston rod of the cylinder 10 passes through the interior of the main box body 5, the end of the piston rod of the cylinder 10 is fixedly connected to the tool holder, the upper part of the tool holder is connected to the scraper 17 by bolts, and the front side of the main box body 5 is connected to the second filter drawer 7 by bolts.

[0031] The upper portion of the shower box 1 is fixedly connected to a liquid inlet pipe 6 , and the lower portion of the liquid inlet pipe 6 is fixedly connected to a shower head 13 .

[0032] A motor mounting bracket 11 is fixedly connected to the left side of the main box body 5 , and a stepping motor 18 is fixedly connected to the motor mounting bracket 11 .

[0033] The output shaft of the stepper motor 18 is fixedly connected to a worm gear 19 , and the left side of the hollow rotating shaft 22 is fixedly connected to a worm 20 .

[0034] A gear box 12 is fixedly connected to the left side of the main housing 5 , and a worm wheel 19 and a worm 20 are installed inside the gear box 12 .

[0035] A brush holder 24 is fixedly connected to the right side wall of the main box 5 , a brush 23 is fixedly connected to the front side of the brush holder 24 , and the brush 23 is electrically connected to the heating rod 21 .

[0036] A leak-proof sleeve 2 is fixedly connected to the right side wall of the main box body 5 . A rubber ring is provided inside the leak-proof sleeve 2 . The leak-proof sleeve 2 is sleeved on the outside of the hollow rotating shaft 22 .

[0037] The bottoms of the first filter drawer 4 and the second filter drawer 7 are both hollow. A first filter net 14 is fixedly connected to the bottom of the first filter drawer 4 , and a second filter net 16 is fixedly connected to the bottom of the second filter drawer 7 .

[0038] The mesh number of the first filter screen 14 is smaller than that of the second filter drawer 7 . A smooth platform 3 is provided at the lower portion of the first filter drawer 4 , and the smooth platform 3 is welded to the shower box 1 .

[0039] The rear portion of the extended box body 8 is connected to a water pump 9, and the outlet portion of the water pump 9 is connected to a water outlet connecting pipe.

[0040] Working Principle: By placing the heating rod 21 inside the hollow rotating shaft 22 and in close contact with the evaporation crystallization metal plate 15, the metal plate can be uniformly heated. This design not only improves heating efficiency but also ensures a uniform temperature distribution on the metal plate surface, thereby optimizing the crystallization process.

[0041] In traditional PCB micro-etching solution recycling equipment, the metal ion recovery efficiency is low and the crystallization process is difficult to control, resulting in unstable regeneration solution quality. This utility model improves the metal recovery rate and the quality of the regeneration solution by precisely controlling the heating process.

[0042] The heating rod 21 is located inside the hollow rotating shaft 22 and can directly transfer heat to the evaporated crystallization metal plate 15, thereby avoiding the loss of heat energy and ensuring the uniformity of heating.

[0043] Uniform heating helps the metal ions to be uniformly deposited on the evaporated crystallization metal plate 15, which is beneficial to the formation of high-quality crystals, thereby improving the purity of the recovered metal.

[0044] The cylinder 10 drives the scraper 17 to move along the surface of the evaporated crystallization metal plate 15, which can effectively remove the crystals, avoid the inconvenience of manual cleaning, and improve the degree of automation.

[0045] In traditional equipment, the cleaning of crystals often requires manual intervention, which is not only inefficient but also easily causes damage to the crystals. The present invention realizes automatic cleaning of crystals through mechanical means, improving efficiency and reducing losses.

[0046] By providing the first filter drawer 4 and the second filter drawer 7, each equipped with a filter screen of different mesh sizes, multi-stage filtration of the micro-etching liquid is achieved, effectively removing impurity particles of different sizes.

[0047] Impurity particles in micro-etching fluid can seriously affect the quality of PCBs. This utility ensures the purity of the micro-etching fluid through a two-stage filtration system, improving the accuracy and stability of PCB processing.

[0048] The first filter 14 is used to remove larger particles, and the second filter 16 is used to further remove smaller impurities, thereby ensuring the purity of the regenerated micro-etching liquid.

[0049] Through graded filtration, the impurity content in the micro-etching solution is greatly reduced, and the quality and efficiency of PCB processing are improved.

[0050] Through innovative design, this utility model solves the problems existing in traditional PCB micro-etching liquid recycling and regeneration equipment, improves the quality and efficiency of micro-etching liquid regeneration, and is of great significance for promoting the sustainable development of the PCB industry.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB micro-etching liquid recycling and regeneration device, comprising a main box (5), characterized in that: The upper part of the main box (5) is fixedly connected to the shower box (1), the right side of the main box (5) is fixedly connected to the extended box (8), the front side of the shower box (1) is connected to the first filter drawer (4) by bolts, the interior of the main box (5) is rotatably connected to the evaporation crystallization metal plate (15) through a hollow rotating shaft (22), the hollow rotating shaft (22) passes through the interior of the evaporation crystallization metal plate (15) and is welded thereto, the interior of the hollow rotating shaft (22) is fixedly connected to a heating rod (21), the upper part of the extended box (8) is fixedly connected to the cylinder (10), the piston rod of the cylinder (10) passes through the interior of the main box (5), the end of the piston rod of the cylinder (10) is fixedly connected to a knife holder, the upper part of the knife holder is connected to a scraper (17) by bolts, and the front side of the main box (5) is connected to the second filter drawer (7) by bolts.

2. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: The upper portion of the shower box (1) is fixedly connected to a liquid inlet pipe (6), and the lower portion of the liquid inlet pipe (6) is fixedly connected to a shower head (13).

3. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: A motor mounting frame (11) is fixedly connected to the left side of the main box (5), and a stepping motor (18) is fixedly connected to the motor mounting frame (11).

4. The PCB micro-etching solution recycling and regeneration device according to claim 3, characterized in that: The output shaft of the stepping motor (18) is fixedly connected to a worm gear (19), and the left side of the hollow rotating shaft (22) is fixedly connected to a worm (20).

5. The PCB micro-etching solution recycling and regeneration device according to claim 4, characterized in that: The left side of the main housing (5) is fixedly connected to a gear box (12), and the worm wheel (19) and the worm (20) are installed inside the gear box (12).

6. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: A brush holder (24) is fixedly connected to the right side wall of the main box (5), a brush (23) is fixedly connected to the front side of the brush holder (24), and the brush (23) is electrically connected to the heating rod (21).

7. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: A leak-proof sleeve (2) is fixedly connected to the right side wall of the main box (5), a rubber ring is provided inside the leak-proof sleeve (2), and the leak-proof sleeve (2) is sleeved on the outside of the hollow rotating shaft (22).

8. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: The bottoms of the first filter drawer (4) and the second filter drawer (7) are both hollow; a first filter net (14) is fixedly connected to the bottom of the first filter drawer (4), and a second filter net (16) is fixedly connected to the bottom of the second filter drawer (7).

9. The PCB micro-etching solution recycling and regeneration device according to claim 8, characterized in that: The mesh number of the first filter screen (14) is smaller than the mesh number of the second filter drawer (7); a smooth platform (3) is provided at the lower portion of the first filter drawer (4); and the smooth platform (3) is welded to the shower box (1).

10. The PCB micro-etching solution recycling and regeneration equipment according to claim 1, characterized in that: The rear portion of the extended box (8) is connected to a water pump (9), and the outlet portion of the water pump (9) is connected to a water outlet connecting pipe.

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