A manufacturing process for a PCB dry film developing tank cleaning agent

Abstract

This invention discloses a production process for a PCB dry film developing tank cleaning agent. The process steps are as follows: Weighing: Weigh the following ingredients according to the mixing ratio: sulfuric acid: 15-25%; acetic acid: 15-25%; co-solvent: 3-7%; surfactant: 1-4%; water: balance; Preheating and premixing: Preheat the four ingredients (excluding water) using the PCB dry film developing tank cleaning agent production equipment to improve molecular activity, and then premix the four ingredients; Feeding: Disperse the ingredients evenly in the upper, middle, and lower layers of water using the PCB dry film developing tank cleaning agent production equipment; Stirring and mixing: Use the PCB dry film developing tank cleaning agent production equipment to make the water move in a spiral shape and simultaneously stir the liquid, creating turbulence to achieve mixing; Simultaneous cleaning: Self-clean the PCB dry film developing tank cleaning agent production equipment to prevent corrosion. This invention effectively shortens the stirring time and achieves better mixing uniformity than existing methods.

Description

Technical Field

[0001] This invention relates to the field of cleaning agents, and more particularly to a manufacturing process for a PCB dry film developing tank cleaning agent. Background Technology

[0002] PCB dry film developing tank cleaning agent is a cleaning agent that can efficiently emulsify dry / wet film residues adhering to the equipment. The acidic system can react quickly with the calcium and magnesium ions and other crystals in the residual dry / wet film residues, and can quickly dissolve the residues at low temperatures, shortening the cleaning time. The cleaning effect is significantly better than conventional acid and alkali soaking cleaning methods, ensuring normal PCB manufacturing processes, saving energy and increasing production capacity, and has certain economic and environmental significance.

[0003] In the production process of cleaning agents, the ingredients include sulfuric acid, acetic acid, solubilizer, surfactant, and water. These ingredients need to be mixed evenly. However, since the ingredients are liquids and acidic, a large amount of odorous acidic gas is generated during the mixing process. Moreover, mixing multiple liquids evenly takes a long time and is very costly. Furthermore, existing mixing equipment is not convenient for sampling the mixed cleaning agent after mixing. Most importantly, in order to protect the mixing equipment from corrosion by acidic liquids, the equipment needs to be cleaned in a timely manner. However, existing equipment is not convenient for cleaning, and acidic liquids can easily remain inside the equipment, leading to corrosion. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a PCB dry film developing tank cleaning agent production process with short mixing time, good mixing uniformity, and easy equipment cleaning and sampling.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a PCB dry film developing tank cleaning agent production equipment, comprising mounting columns, a mixing tank, a first solenoid valve, and an exhaust port; three mounting columns are provided; a mixing tank in the shape of an inverted frustum is mounted on the upper side of the three mounting columns; a first solenoid valve is provided on the lower side of the mixing tank; an exhaust port is connected to the upper side of the mixing tank; it also includes a thermal premixing mechanism and a feeding mixing mechanism; a thermal premixing mechanism for heating and premixing raw materials is mounted on the upper side of the mixing tank; a feeding mixing mechanism for multi-point feeding and mixing is mounted on the thermal premixing mechanism; the feeding mixing mechanism is connected to the mixing tank.

[0006] As a further preferred embodiment, the thermal premixing mechanism includes a pre-storage tank, a feed pipe, a water inlet pipe, an electric heater, a second solenoid valve, a condenser, a water wheel plate, a first connecting pipe, an annular water pipe, and a third solenoid valve. The pre-storage tank is mounted on the upper side of the mixing tank. Four annularly arranged feed pipes are connected to the upper side of the pre-storage tank. Four annularly arranged water inlet pipes are connected to the upper side of the pre-storage tank. Four annularly arranged electric heaters are installed inside the pre-storage tank. Four annularly arranged second solenoid valves are arranged on the lower side of the pre-storage tank. The pre-storage tank is connected to the feeding and mixing mechanism. One end of each of the four second solenoid valves is connected to the feeding and mixing mechanism, and the other end is connected to the pre-storage chamber. A condenser is installed at the top of each of the four pre-storage chambers. Several water wheel plates are arranged annularly on the lower surface of each of the four condensers. Four first connecting pipes are arranged annularly on the upper side of the pre-storage tank. The four first connecting pipes are located at the top of adjacent pre-storage chambers. An annular water pipe is connected to the lower side of the four first connecting pipes. A third solenoid valve is connected to the lower side of the annular water pipe. The lower side of the third solenoid valve is connected to the feeding and mixing mechanism via a pipe.

[0007] As a further preferred option, the pre-storage cavity is configured as an inverted cone shape.

[0008] As a further preferred embodiment, four annular cooling chambers are provided on the upper inner side of the pre-storage tank, and the four cooling chambers are located directly above the four pre-storage chambers.

[0009] As a further preferred option, the condenser is configured as an inverted cone shape, and several drainage grooves are provided on the lower surface of the condenser.

[0010] As a further preferred option, the outlets of the four first connecting pipes are set at an angle to the pre-storage chamber.

[0011] As a further preferred embodiment, the feeding and mixing mechanism includes a servo motor, a connecting shaft, a premixer, a communicating vessel, a second connecting pipe, a mixing blade, a slip ring, a sampling pipe, and a stirring unit. A servo motor is mounted on the upper center of the pre-storage tank. The output end of the servo motor is fixedly connected to the connecting shaft. The connecting shaft passes through the pre-storage tank and is rotatably connected to it. The premixer is connected between the lower sides of four second solenoid valves. A mixing blade is fixedly connected to the middle of the outer surface of the connecting shaft, and the mixing blade is located inside the premixer. A slip ring is rotatably connected to the lower side of the premixer. A communicating vessel is fixedly connected to the lower side of the slip ring. A stirring unit is connected to the lower side of the communicating vessel. Three sampling pipes in a ring array are mounted on the communicating vessel, and the distance between the lower outlet of the three sampling pipes and the bottom of the mixing tank gradually decreases. Three second connecting pipes are connected to the mixing tank, and the three second connecting pipes are connected to each other via pipes. A third solenoid valve is connected to an adjacent second connecting pipe. The communicating vessel is connected to the stirring unit.

[0012] As a further preferred embodiment, the stirring unit includes a first discharge pipe, a second discharge pipe, a first magnet, a second magnet, stirring blades, and stirring fan blades; nine annularly arranged first discharge pipes are connected to the lower side of the communicating vessel; each of the nine first discharge pipes is rotatably connected to a first magnet via a pipe; each of the nine first magnets is connected to a second discharge pipe; three annularly arranged second magnets are fixedly connected to the top of the mixing tank; several stirring blades are fixedly connected to the lower side of each of the nine second discharge pipes; and three annularly arranged stirring fan blades are fixedly connected to the lower side of the connecting shaft.

[0013] As a further preferred option, the distance between the lower outlet of the second discharge pipe and the bottom of the mixing tank gradually decreases.

[0014] A manufacturing process for a PCB dry film developing tank cleaning agent includes the following steps:

[0015] S1: Mixing ratio: The cleaning agent is composed of the following components by mass percentage: sulfuric acid: 15-25%; acetic acid: 15-25%; co-solvent: 3-7%; surfactant: 1-4%; water: balance;

[0016] S2: Preheating and premixing: The four ingredients (excluding water) are preheated using the PCB dry film developing tank cleaning agent production equipment to improve molecular activity and then premixed.

[0017] S3: Feeding: The ingredients are evenly dispersed in the upper, middle and lower layers of water through the PCB dry film developing tank cleaning agent production equipment;

[0018] S4: Stirring and mixing: The water is made to move in a spiral shape by the PCB dry film developing tank cleaning agent production equipment, and the liquid is stirred at the same time, forming turbulent flow to achieve mixing;

[0019] S5: Synchronous Cleaning: The PCB dry film developing tank cleaning agent performs self-cleaning inside the production equipment to prevent equipment corrosion.

[0020] Compared with the prior art, the present invention has the following advantages: the present invention achieves a significant increase in the molecular activity of the ingredients by heating, resulting in high molecular activity, faster mixing rate, and more uniform mixing during mixing.

[0021] The four ingredients are stirred and mixed to achieve premixing. Compared with the existing equipment that directly mixes multiple ingredients at the same time, the premixing method reduces the mixing of multiple ingredients to the mixing of two ingredients. In the subsequent mixing process, the mixing time is effectively shortened and the mixing uniformity is better than the existing mixing method.

[0022] The three second connecting pipes are set at an angle to the mixing tank, which causes the water inside the mixing tank to move in a spiral along the inner wall of the mixing tank. With a top-down reference, the water moves in a clockwise spiral. At this time, the servo motor drives the connecting shaft and the stirring fan to rotate counterclockwise, which causes the water inside the mixing tank to form a turbulent flow with the liquid composed of the other four premixed ingredients. Compared with regular stirring and mixing, the turbulent flow mixes the liquid more quickly.

[0023] The distance between the lower outlet of the second discharge pipe and the bottom of the mixing tank gradually decreases. Therefore, the added ingredients are evenly dispersed in the upper, middle and lower layers of the water in the mixing tank, resulting in a faster mixing rate and a better mixing effect.

[0024] While mixing the liquid, the equipment is cleaned simultaneously, improving the mixing effect and eliminating the need for subsequent equipment cleaning. It is designed with an inverted conical pre-storage chamber and an inverted frustum-shaped mixing tank, which is easier to clean and has a better cleaning effect compared to existing circular mixing vessels. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0027] Figure 3 This is a first cross-sectional view of the thermal premixing mechanism of the present invention;

[0028] Figure 4 This is a second cross-sectional view of the thermal premixing mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the first three-dimensional structure of the feeding and mixing mechanism of the present invention;

[0030] Figure 6 This is an enlarged view of area A of the feeding and mixing mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of a second three-dimensional structure of the feeding and mixing mechanism of the present invention;

[0032] Figure 8 This is a three-dimensional structural diagram of the first part of the feeding and mixing mechanism of the present invention;

[0033] Figure 9 This is a schematic diagram of the second partial three-dimensional structure of the feeding and mixing mechanism of the present invention;

[0034] Figure 10 This is a three-dimensional structural diagram of the third part of the feeding and mixing mechanism of the present invention.

[0035] Wherein: 1-mounting column, 2-mixing tank, 3-first solenoid valve, 4-vent, 401-pre-storage tank, 40101-pre-storage cavity, 40102-cooling cavity, 402-feed pipe, 403-water inlet pipe, 404-heater, 405-second solenoid valve, 406-condenser, 407-water wheel plate, 408-first connecting pipe, 409-ring water pipe, 4010-third solenoid valve, 501-servo motor, 502-connecting shaft, 503-premixer, 504-connecting device, 505-second connecting pipe, 506-mixing blade, 507-slip ring, 508-sampling pipe, 601-first discharge pipe, 602-second discharge pipe, 603-first magnet, 604-second magnet, 605-stirring blade, 606-stirring fan blade. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-10 As shown, a PCB dry film developing tank cleaning agent production equipment includes mounting columns 1, mixing tank 2, first solenoid valve 3, and vent 4; three mounting columns 1 are provided; mixing tank 2 is installed on the upper side of the three mounting columns 1; first solenoid valve 3 is provided on the lower side of mixing tank 2; vent 4 is connected to the upper side of mixing tank 2.

[0038] It also includes a hot premixing mechanism and a feeding mixing mechanism; the hot premixing mechanism is installed on the upper side of the mixing tank 2; the feeding mixing mechanism is installed on the hot premixing mechanism; the feeding mixing mechanism is connected to the mixing tank 2.

[0039] The premixing mechanism includes a pre-storage tank 401, a feed pipe 402, a water inlet pipe 403, an electric heater 404, a second solenoid valve 405, a condenser 406, a water turbine plate 407, a first connecting pipe 408, an annular water pipe 409, and a third solenoid valve 4010. The pre-storage tank 401 is mounted on the upper side of the mixing tank 2. Four annular feed pipes 402 are connected to the upper side of the pre-storage tank 401. Four annular water inlet pipes 403 are connected to the upper side of the pre-storage tank 401. Four annular electric heaters 404 are mounted inside the pre-storage tank 401. Four annular second solenoid valves 405 are located on the lower side of the pre-storage tank 401. The pre-storage tank 401 is connected to the feeding mixing mechanism. One end of each of the four second solenoid valves 405 is connected to the feeding mixer. The four pre-storage tanks 40101 are connected at one end and at the other end to the pre-storage chamber 40101. Each of the four pre-storage chambers 40101 is equipped with a condenser 406 at the top. Several water wheel plates 407 are arranged in a ring on the lower surface of each of the four condensers 406. Four first connecting pipes 408 are arranged in a ring on the upper side of the pre-storage tank 401. The four first connecting pipes 408 are located at the top of adjacent pre-storage chambers 40101. A ring water pipe 409 is connected to the lower side of the four first connecting pipes 408. A third solenoid valve 4010 is connected to the lower side of the ring water pipe 409. The lower side of the third solenoid valve 4010 is connected to the feeding and mixing mechanism through a pipe. The ingredients stored in the pre-storage chamber 40101 are preheated by the electric heater 404 and then pre-mixed.

[0040] The pre-storage cavity 40101 is set to an inverted cone shape.

[0041] The upper inner side of the pre-storage tank 401 has four annularly arranged cooling chambers 40102, and the four cooling chambers 40102 are located directly above the four pre-storage chambers 40101.

[0042] The condenser 406 is configured as an inverted cone shape, and several drainage grooves are provided on the lower surface of the condenser 406.

[0043] The outlets of the four first connecting pipes 408 are set at an angle to the pre-storage chamber 40101.

[0044] The feeding and mixing mechanism includes a servo motor 501, a connecting shaft 502, a premixer 503, a communicating vessel 504, a second connecting pipe 505, a mixing blade 506, a slip ring 507, a sampling pipe 508, and a stirring unit. The servo motor 501 is mounted on the upper center of the pre-storage tank 401. The output end of the servo motor 501 is fixedly connected to the connecting shaft 502. The connecting shaft 502 passes through the pre-storage tank 401 and is rotatably connected to it. The premixer 503 is connected between the lower sides of the four second solenoid valves 405. The mixing blade 506 is fixedly connected to the middle of the outer surface of the connecting shaft 502, and the mixing blade 506 is located inside the premixer 503. A slip ring is rotatably connected to the lower side of the premixer 503. 507; A communicating vessel 504 is fixedly connected to the lower side of the slip ring 507; A stirring unit for mixing liquid is connected to the lower side of the communicating vessel 504; Three sampling tubes 508 in an annular array are installed on the communicating vessel 504, and the distance between the lower outlet of the three sampling tubes 508 and the bottom of the mixing tank 2 gradually decreases; Three second connecting pipes 505 are connected to the mixing tank 2, and the three second connecting pipes 505 are connected to each other by pipes; A third solenoid valve 4010 is connected to the adjacent second connecting pipe 505; The communicating vessel 504 is connected to the stirring unit; The raw materials are premixed by the mixing blades 506 and then enter the mixing tank 2, where they are stirred and mixed by the stirring unit.

[0045] The stirring unit includes a first discharge pipe 601, a second discharge pipe 602, a first magnet 603, a second magnet 604, stirring blades 605, and stirring fan blades 606; nine annularly arranged first discharge pipes 601 are connected to the lower side of the communicating vessel 504; each of the nine first discharge pipes 601 is rotatably connected to a first magnet 603 via a pipe; each of the nine first magnets 603 is connected to a second discharge pipe 602; three annularly arranged second magnets 604 are fixedly attached to the top of the mixing tank 2; several stirring blades 605 are fixedly attached to the lower side of each of the nine second discharge pipes 602; three annularly arranged stirring fan blades 606 are fixedly attached to the lower side of the connecting shaft 502; the liquid is stirred and mixed by the stirring fan blades 606.

[0046] The distance between the lower outlet of the second discharge pipe 602 and the bottom of the mixing tank 2 gradually decreases.

[0047] The stirring blade 606 has several locking teeth on the side near the mixing tank 2.

[0048] A manufacturing process for a PCB dry film developing tank cleaning agent includes the following steps:

[0049] S1: Mixing ratio: The cleaning agent is composed of the following components by mass percentage: sulfuric acid: 15-25%; acetic acid: 15-25%; co-solvent: 3-7%; surfactant: 1-4%; water: balance;

[0050] S2: Preheating and premixing: The four ingredients (excluding water) are preheated using the PCB dry film developing tank cleaning agent production equipment to improve molecular activity and then premixed.

[0051] S3: Feeding: The ingredients are evenly dispersed in the upper, middle and lower layers of water through the PCB dry film developing tank cleaning agent production equipment;

[0052] S4: Stirring and mixing: The water is made to move in a spiral shape by the PCB dry film developing tank cleaning agent production equipment, and the liquid is stirred at the same time, forming turbulent flow to achieve mixing;

[0053] S5: Synchronous Cleaning: The PCB dry film developing tank cleaning agent performs self-cleaning inside the production equipment to prevent equipment corrosion.

[0054] During the production of the cleaning agent, the ingredients include sulfuric acid, acetic acid, solubilizer, surfactant, and water. First, sulfuric acid, acetic acid, solubilizer, and surfactant are added to the four pre-storage chambers 40101 within the pre-storage tank 401, according to the ratio of the four ingredients. The feed pipe 402 is then sealed. Simultaneously, an appropriate amount of cooling water is added to the cooling chamber 40102 through the water inlet pipe 403. At this time, all four second solenoid valves 405 and the third solenoid valve 4010 are closed, and the four electric heaters 404 are energized. The ingredients inside the pre-storage chamber 40101 are heated to significantly increase their molecular activity, resulting in higher mixing rates and more uniform mixing during the mixing process. After heating, four second solenoid valves 405 are opened, allowing the four ingredients to pass through their respective pre-storage chambers 40101 and into the premixer 503. The discharge rate of each ingredient is proportional to its proportion, ensuring that during pre-mixing in the premixer 503, all ingredients are simultaneously discharged from the pre-storage chamber 40101, resulting in high uniformity of mixing. When the four ingredients are heated, they evaporate and vaporize. To prevent the proportion of ingredients from decreasing due to evaporation, when the vaporized ingredients come into contact with the lower surface of the condenser 406, the cooling water in the cooling chamber 40102 causes the vaporized ingredients to liquefy rapidly upon contact with the cooling water. Furthermore, to ensure the liquefied ingredients quickly flow back into the pre-storage chamber 40101, the condenser 406 is designed as an inverted cone shape, and its lower surface has several drainage grooves. This allows the ingredients, initially dispersed as fine water droplets, to quickly accumulate into water droplets under the influence of gravity and the guidance of the drainage grooves, and then drip back into the pre-storage chamber 40101. The ingredients are fed into the premixer 503, and the servo motor 501 is started to work. The servo motor 501 drives the connecting shaft 502 to rotate. When the connecting shaft 502 rotates, it synchronously drives the mixing blades 506 inside the premixer 503 to rotate, and stirs and mixes the four ingredients to achieve premixing. Moreover, compared with the existing equipment that directly mixes multiple ingredients at the same time, the premixing method is equivalent to reducing the mixing of multiple ingredients to the mixing of two ingredients. In the subsequent mixing process, the mixing time is effectively shortened, and the mixing uniformity is also better than the existing mixing method.

[0055] After the four ingredients are premixed inside the premixer 503, they enter the communicating vessel 504 and then flow into several first discharge pipes 601. The ingredients inside the first discharge pipes 601 are then discharged into the mixing tank 2 through several second discharge pipes 602. Simultaneously, water is introduced into three second connecting pipes 505 via external pipes. Finally, water is added into the mixing tank 2 through the three second connecting pipes 505. Because the mixing tank 2 is shaped like an inverted frustum and the three second connecting pipes 505 are angled towards it, the water inside the mixing tank 2 moves in a spiral motion along its inner wall, rotating clockwise when viewed from above. Meanwhile, the servo motor 501 drives the connecting shaft 502 and the stirring blades 606 to rotate counterclockwise. This causes the liquid inside the mixing tank 2 to form a turbulent flow with the other four premixed ingredients. Compared to regular stirring, turbulent flow mixes the liquid faster and more evenly. To make the liquid flow even more irregular, when the communicating vessel 504 drives the first discharge pipe 601, the second discharge pipe 602, and the first magnet 603 to rotate, the first magnet 603 rotates and approaches the second magnet 604. Since both the second magnet 604 and the first magnet 603 are strong magnets, when the second magnet 604 and the first magnet 603 approach each other and attract each other, the second discharge pipe 602 rotates and oscillates around the first discharge pipe 601. When the second discharge pipe 602 rotates, it also drives the stirring plate 605 to oscillate, making the liquid flow inside the mixing tank 2 more chaotic, thereby improving the liquid mixing rate and uniformity.

[0056] Furthermore, the essence of liquid mixing is the mixing of intermolecular motion. Existing liquid mixing methods mostly involve directly adding one liquid to another. However, when adding, the liquid is usually added to the surface or upper middle part of the other liquid. This method requires liquid molecules to take a certain amount of time to move to the lower middle part of the other liquid, resulting in a significant increase in mixing time and lower mixing uniformity. Therefore, when the second discharge pipe 602 discharges the ingredients, the distance between the lower discharge port of the second discharge pipe 602 and the bottom of the mixing tank 2 gradually decreases. As a result, the added ingredients are evenly dispersed in the upper, middle and lower layers of the water in the mixing tank 2, making the liquid mixing rate faster and the mixing effect better.

[0057] When the stirring blade 606 rotates, it simultaneously contacts the lower inner wall of the mixing tank 2. Because the stirring blade 606 has several retaining teeth on the side near the mixing tank 2, these teeth prevent a large number of air bubbles from being adsorbed onto the lower inner wall of the mixing tank 2. This prevents the bubbles from bursting when the mixed cleaning agent is subsequently discharged from the first solenoid valve 3, releasing a large amount of acidic gas that pollutes the air and affects the health of the workers. Under normal circumstances, the gas inside the mixing tank 2 is discharged and absorbed through the exhaust port 4 during liquid mixing, preventing acidic gas from polluting the air.

[0058] When adding ingredients, as the ingredients inside the pre-storage chamber 40101 are emptied, the third solenoid valve 4010 is simultaneously opened, allowing water for mixing to enter the annular water pipe 409, then from the annular water pipe 409 into the first connecting pipe 408, and finally from the first connecting pipe 408 into the pre-storage chamber 40101. Since the pre-storage chamber 40101 is designed as an inverted cone shape, and the outlet of the first connecting pipe 408 is at an angle to the pre-storage chamber 40101, water flows along the inner wall of the pre-storage chamber 40101, thus cleaning the inner wall of the pre-storage chamber 40101. Simultaneously, to clean the condenser 406 and prevent… Because it is corroded, when water is discharged from the first connecting pipe 408, the water impacts the water wheel plate 407, causing the condenser 406 to rotate continuously. This cleans the condenser 406 with water. The cleaned water then gradually flows into the premixer 503, the communicating vessel 504, the first discharge pipe 601, the second discharge pipe 602, and the mixing tank 2. This allows the equipment to be cleaned simultaneously while the liquid is being mixed, improving the mixing effect and eliminating the need for subsequent equipment cleaning. Furthermore, the design of the inverted conical pre-storage chamber 40101 and the inverted frustum-shaped mixing tank 2 makes cleaning easier and more effective compared to existing circular mixing vessels.

[0059] When sampling and testing are required in the future, sampling is carried out through three sampling tubes 508. Since the distance between the lower outlet of the three sampling tubes 508 and the bottom of the mixing tank 2 gradually decreases, multi-point sampling is achieved, the sampling uniformity is improved, and the detection of liquid mixture is facilitated.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A manufacturing process for a PCB dry film developing tank cleaning agent, characterized in that, The steps are as follows: S1: Mixing ratio: The cleaning agent is composed of the following components by mass percentage: sulfuric acid: 15-25%; acetic acid: 15-25%; cosolvent: 3-7%; surfactant: 1-4%; Water: Balance; S2: Preheating and premixing: The four ingredients (excluding water) are preheated using the PCB dry film developing tank cleaning agent production equipment to improve molecular activity and then premixed. S3: Feeding: The ingredients are evenly dispersed in the upper, middle and lower layers of water through the PCB dry film developing tank cleaning agent production equipment; S4: Stirring and mixing: The water is made to move in a spiral shape by the PCB dry film developing tank cleaning agent production equipment, and the liquid is stirred at the same time, forming turbulent flow to achieve mixing; S5: Synchronous Cleaning: The PCB dry film developing tank cleaning agent production equipment performs self-cleaning inside to prevent equipment corrosion; The PCB dry film developing tank cleaning agent production equipment includes mounting columns (1), mixing tank (2), first solenoid valve (3) and exhaust port (4); there are three mounting columns (1); the mixing tank (2) in the shape of an inverted truncated cone is mounted on the upper side of the three mounting columns (1); the first solenoid valve (3) is provided on the lower side of the mixing tank (2); the exhaust port (4) is connected to the upper side of the mixing tank (2). It also includes a hot premixing mechanism and a feeding mixing mechanism; a hot premixing mechanism for heating and premixing raw materials is installed on the upper side of the mixing tank (2); a feeding mixing mechanism for multi-point feeding and mixing is installed on the hot premixing mechanism; the feeding mixing mechanism is connected to the mixing tank (2). The heat premixing mechanism includes a pre-storage tank (401), a feed pipe (402), a water inlet pipe (403), an electric heater (404), a second solenoid valve (405), a condenser (406), a water turbine plate (407), a first connecting pipe (408), an annular water pipe (409), and a third solenoid valve (4010); the pre-storage tank (401) is installed on the upper side of the mixing tank (2); four annular feed pipes (402) are connected to the upper side of the pre-storage tank (401); four annular water inlet pipes (403) are connected to the upper side of the pre-storage tank (401); four annular electric heaters (404) are installed inside the pre-storage tank (401); four annular second solenoid valves (405) are installed on the lower side of the pre-storage tank (401); the pre-storage tank (401) The feed mixing mechanism is connected; one end of each of the four second solenoid valves (405) is connected to the feed mixing mechanism, and the other end is connected to the pre-storage chamber (40101); each of the four pre-storage chambers (40101) is equipped with a condenser (406) at the top; several water wheel plates (407) are arranged in a ring on the lower surface of each of the four condensers (406); four first connecting pipes (408) are arranged in a ring on the upper side of the pre-storage tank (401); the four first connecting pipes (408) are respectively located at the top of the adjacent pre-storage chambers (40101); a ring water pipe (409) is connected to the lower side of the four first connecting pipes (408); a third solenoid valve (4010) is connected to the lower side of the ring water pipe (409); the lower side of the third solenoid valve (4010) is connected to the feed mixing mechanism through a pipe; The feeding and mixing mechanism includes a servo motor (501), a connecting shaft (502), a premixer (503), a communicating vessel (504), a second connecting pipe (505), a mixing blade (506), a slip ring (507), a sampling pipe (508), and a stirring unit; a servo motor (501) is installed in the middle of the upper side of the pre-storage tank (401); a connecting shaft (502) is fixedly connected to the output end of the servo motor (501); the connecting shaft (502) passes through the pre-storage tank (401) and is rotatably connected to the pre-storage tank (401); a premixer (503) is connected between the lower sides of the four second solenoid valves (405); a mixing blade (506) is fixedly connected to the middle of the outer surface of the connecting shaft (502), and the mixing blade ( 506) is located inside the premixer (503); a slip ring (507) is rotatably connected to the lower side of the premixer (503); a communicating vessel (504) is fixedly connected to the lower side of the slip ring (507); a stirring unit is connected to the lower side of the communicating vessel (504); three sampling tubes (508) in an annular array are installed on the communicating vessel (504), and the distance between the lower outlet of the three sampling tubes (508) and the bottom of the mixing tank (2) gradually decreases; three second connecting pipes (505) are connected to the mixing tank (2), and the three second connecting pipes (505) are connected to each other through pipes; a third solenoid valve (4010) is connected to the adjacent second connecting pipe (505); the communicating vessel (504) is connected to the stirring unit; The stirring unit includes a first discharge pipe (601), a second discharge pipe (602), a first magnet (603), a second magnet (604), stirring blades (605), and stirring fan blades (606); nine annularly arranged first discharge pipes (601) are connected to the lower side of the communicating vessel (504); each of the nine first discharge pipes (601) is rotatably connected to a first magnet (603) through a pipe; each of the nine first magnets (603) is connected to a second discharge pipe (602); three annularly arranged second magnets (604) are fixed to the top of the mixing tank (2); several stirring blades (605) are fixed to the lower side of each of the nine second discharge pipes (602); and three annularly arranged stirring fan blades (606) are fixed to the lower side of the connecting shaft (502).

2. The production process of a PCB dry film developing tank cleaning agent according to claim 1, characterized in that: The pre-storage cavity (40101) is set to an inverted cone shape.

3. The production process of a PCB dry film developing tank cleaning agent according to claim 1, characterized in that: The upper inner side of the pre-storage tank (401) has four annularly arranged cooling chambers (40102), and the four cooling chambers (40102) are located directly above the four pre-storage chambers (40101).

4. The production process of a PCB dry film developing tank cleaning agent according to claim 1, characterized in that: The condenser (406) is configured as an inverted cone shape, and several drainage grooves are provided on the lower surface of the condenser (406).

5. The production process of a PCB dry film developing tank cleaning agent according to claim 1, characterized in that: The outlets of the four first connecting pipes (408) are set at an angle to the pre-storage chamber (40101).

6. The production process of a PCB dry film developing tank cleaning agent according to claim 1, characterized in that: The distance between the lower outlet of the second discharge pipe (602) and the bottom of the mixing tank (2) gradually decreases.

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