Adding device capable of automatically adding etching liquid

Abstract

The utility model provides an adding device capable of automatically adding etching liquid, and relates to the technical field of etching liquid. The device comprises a stirring tank, a water pump and a liquid storage tank are arranged outside the stirring tank, a liquid level sensor is fixedly installed on the outer surface of the liquid storage tank, the outer surface of the stirring tank is fixedly communicated with a connecting pipe, a filtering mechanism is arranged in the stirring tank, and the filtering mechanism comprises a filtering box fixed on the inner wall of the stirring tank. By arranging the liquid storage tank, the liquid level sensor, the water pump, the filtering mechanism and other components and through signal transmission between the liquid level sensor and the PLC electric cabinet, the device can achieve automatic adding operation of etching liquid according to the height of the liquid level in the liquid storage tank, instability caused by manual adding is reduced, and the working efficiency is improved. Meanwhile, waste residues in the etching liquid can be filtered through the filtering mechanism, the situation that particulate matter enters the printed circuit board along with the etching liquid to damage the circuit board is avoided, and the etching effect of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an adding device, concretely is an automatic adding etching liquid's adding device, belongs to etching liquid technical field. BACKGROUND

[0002] Etching liquid is used to process a kind of liquid for printed circuit board, is made by mixing hydrochloric acid, sodium chloride and some additives, with the etching of the progress, the chemical substance content for etching in etching liquid will gradually reduce, thus new etching liquid needs to be added to etching tank, to ensure the normal processing of printed circuit board.

[0003] According to the patent number CN220564722U, an etching liquid automatic adding device is disclosed, which includes a base and a storage tank arranged on the upper end of the base. The inner cavity of the storage tank is provided with a stirring component. A feed pipe is arranged on the left side. A feed bin and a water pump are arranged on the right side of the storage tank.

[0004] The above-mentioned scheme can extract waste gas and send it to the purification tank, making the whole working environment more safe and environmentally friendly. However, the above-mentioned scheme is difficult to achieve automatic addition of etching liquid, and it is inconvenient to filter the waste residue in the etching liquid, affecting the use effect of the etching liquid. Therefore, we provide an automatic etching liquid adding device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an automatic etching liquid adding device to solve the above problems, to solve the problem that etching liquid is not convenient to automatically add, affecting the efficiency of etching operation, and the filter residue in etching liquid affects etching precision.

[0006] The utility model is implemented by the following technical scheme: an automatic etching liquid adding device, including agitator tank, the outside of agitator tank is provided with water pump and liquid storage tank, the outer surface of liquid storage tank is fixedly installed with liquid level sensor, the outer surface of agitator tank is fixedly connected with connecting pipe, the inside of agitator tank is provided with filter mechanism, filter mechanism includes filter box fixed on the inner wall of agitator tank, the inside of filter box is fixedly connected with filter plate, the middle part of filter plate is rotatably connected with transmission rod, the end of transmission rod is fixedly connected with a group of water flow driving plates.

[0007] Preferably, one end of the transmission rod is fixedly connected with a cleaning brush, and the cleaning brush is slidably connected with the filter plate. The cleaning brush can clean the filter plate and prevent the filter holes from being blocked.

[0008] Preferably, the inner wall of the filter box is fixedly connected with a support plate, the transmission rod penetrates through the support plate and is rotationally connected with the support plate, and the support plate has the effect of stably supporting the transmission rod.

[0009] Preferably, the inside of the stirring tank is rotationally connected with a rotating rod, and the outer surface of the rotating rod is fixedly connected with a group of stirring rods; the stirring rods have the effect of improving the mixing degree of the etching liquid.

[0010] Preferably, the top end of the stirring tank is fixedly provided with a pressure relief valve, and the end of the pressure relief valve is fixedly connected with a purification assembly; the pressure relief valve can avoid accidents caused by excessive internal pressure of the stirring tank.

[0011] Preferably, the top surface of the stirring tank is fixedly connected with a feeding pipe, and the outer surface of the stirring tank is fixedly provided with a PLC electric control box; the PLC electric control box has the effect of controlling electrical elements of the control device.

[0012] Preferably, the outer surface of the liquid storage tank is fixedly connected with a liquid outlet pipe, and the inside of the liquid outlet pipe is fixedly provided with an electric valve; the electric valve can control the flow rate of the liquid in the liquid outlet pipe.

[0013] Preferably, the outer surface of the stirring tank is hingedly connected with a sealing door through a pin shaft, and the inside of the sealing door is fixedly provided with an observation window; the sealing door facilitates cleaning of the inside of the stirring tank by workers.

[0014] The utility model provides an adding device of automatic addition etching liquid, it has the beneficial effect as follows:

[0015] 1. The utility model discloses a liquid storage tank, liquid level sensor, water pump and filter mechanism and other components are set up, through the signal transmission between liquid level sensor and PLC electric control box, so that the device can realize the automatic addition operation of etching liquid according to the height of liquid level in the liquid storage tank, reduce the instability brought by manual addition, can also filter the waste residue in etching liquid through the filter mechanism, avoid the particulate matter with etching liquid into the printed circuit board and cause damage to the circuit board, improve the etching effect of the device.

[0016] 2. The utility model discloses the setting of transmission rod, water flow driving plate and cleaning brush, can utilize the flow of etching liquid to drive the cleaning brush to clean the surface of filter plate, effectively prevent the solid particle from blocking the filter hole and affect the extraction work of water pump to etching liquid, improve the operation quality of etching liquid.

[0017] 3. The utility model discloses a pressure relief valve and the setting of purification subassembly can induct the pressure difference of the inside of stirring tank, and can open the pressure relief according to the setting pressure value automatically, guarantee equipment and pipeline medium pressure below the setting pressure, avoid the phenomenon that the pressure in jar is too big and leads to the deformation of stirring tank even explosion, improved the use security of device, and can purify the gas that discharges, prevent the harmful gas from directly discharging to the air and cause the pollution to the air. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is internal structure section view of stirring tank of the utility model;

[0020] Figure 3 It is structure schematic diagram of liquid storage tank of the utility model;

[0021] Figure 4 It is structure schematic diagram of filter mechanism of the utility model.

[0022] MAIN COMPONENT SYMBOL EXPLANATION

[0023] 1, stirring tank;2, water pump;3, liquid storage tank;4, liquid level sensor;5, connecting pipe;

[0024] 6, filter mechanism;601, filter box;602, filter plate;603, transmission rod;604, water flow driving plate;605, cleaning brush;606, support plate;

[0025] 7, rotating rod;8, stirring rod;9, pressure relief valve;10, purification subassembly;11, feed pipe;12, PLC electric control box;13, liquid outlet pipe;14, electric valve;15, sealing door. DETAILED DESCRIPTION

[0026] The utility model discloses an adding device of automatic addition etching liquid.

[0027] Please refer to Figure 1 Including stirring tank 1, the outer surface of stirring tank 1 is hinged with sealing door 15 through pin shaft, the inside fixed mounting of sealing door 15 has observation window, and the material of observation window is toughened glass material, can conveniently work staff to the stirring degree of stirring tank 1 inside etching liquid raw material observes, sealing door 15 and stirring tank 1 have good airtightness between them, can prevent solution from flowing out device via the gap between them, and the outer surface of sealing door 15 is installed handle, and sealing door 15 is opened to the inside of stirring tank 1 and is cleaned conveniently work staff.

[0028] Please refer to Figure 1 And Figure 2The inner part of the stirring tank 1 is rotationally connected with a rotating rod 7, the outer surface of the rotating rod 7 is fixedly connected with a group of stirring rods 8, the top end of the stirring tank 1 is fixedly installed with a stirring motor, the rotating rod 7 is fixedly connected with the output rotating shaft of the stirring motor, the stirring motor is prior art, and excessive details thereof will not be given in the application, the stirring motor can drive the rotating rod 7 to rotate in the inner part of the stirring tank 1, and the rotating rod 7 can fully stir the mixed solution in the stirring tank 1 through the stirring rods 8, so that the mixing effect of the solution is improved, and the etching liquid is conveniently used subsequently.

[0029] The top end of the stirring tank 1 is fixedly installed with a pressure relief valve 9, the pressure relief valve 9 can sense the pressure difference in the inner part of the stirring tank 1 and automatically open the pressure relief according to the set pressure value, so that the medium pressure in the equipment and pipeline is ensured to be below the set pressure, the phenomenon that the stirring tank 1 is deformed or even explodes due to excessive pressure in the tank is avoided, and the use safety of the device is improved.

[0030] The end of the pressure relief valve 9 is fixedly connected with a purification assembly 10, the inner part of the purification assembly 10 is provided with activated carbon plates, filter cotton plates and other existing air purification materials, the air discharged from the tank can be purified, harmful gases generated in the reaction are avoided from being directly discharged into the air to pollute the air, and the harm of the harmful gases to the health of the surrounding workers is prevented, the pressure relief valve 9 and the purification assembly 10 are prior art, and excessive details thereof will not be given in the application.

[0031] The top surface of the stirring tank 1 is fixedly communicated with a feeding pipe 11, the feeding pipe 11 facilitates the workers to put the raw materials for preparing the etching liquid into the stirring tank 1, and facilitates the subsequent stirring of the mixed solution in the inner part of the stirring tank 1, and a closure plate can be installed on the top of the feeding pipe 11 through bolts to prevent harmful gases generated in the stirring process from overflowing from the feeding pipe 11.

[0032] The outer surface of the stirring tank 1 is fixedly installed with a PLC electric control box 12, the liquid level sensor 4, the water pump 2, the electric valve 14 and the PLC electric control box 12 involved in the application are prior art, and excessive details thereof will not be given in the application, the PLC electric control box 12 can set the operating parameters of the electrical elements in the device and control the operation thereof, and the setting of the PLC electric control box 12 provides help for automatically adding the etching liquid to the device.

[0033] Please refer to Figure 1 and Figure 3The outer surface of the stirring tank 1 is fixedly connected with the connecting pipe 5, and the inner surface of the stirring tank 1 is provided with the filtering mechanism 6. One end of the connecting pipe 5 is fixedly connected with the water pump 2, and the connecting pipe 5 facilitates the water pump 2 to extract the mixed liquid in the stirring tank 1. The filtering mechanism 6 can filter the solid substances such as waste residues generated in the mixing process of the etching liquid, so as to avoid the waste residues entering the printed circuit board along with the etching liquid and causing damage to the circuit board.

[0034] The outer surface of the liquid storage tank 3 is fixedly connected with the liquid level sensor 4. The liquid level sensor 4 can measure the liquid level height in the liquid storage tank 3 and transmit the measured value to the PLC electric control box 12 through wireless signal. The liquid level sensor 4 is divided into contact type sensor and non-contact type sensor and other types, and the specific installation position can be installed according to the type. The installation position in the drawings of the application is only for reference, and the specific production style is not limited.

[0035] The outer surface of the liquid storage tank 3 is fixedly connected with the liquid outlet pipe 13, and the inner surface of the liquid outlet pipe 13 is fixedly connected with the electric valve 14. The liquid outlet pipe 13 facilitates the etching liquid in the liquid storage tank 3 to be discharged into the etching tank, which is convenient for subsequent etching operation of the printed circuit board. The electric valve 14 can control the flow speed of the liquid in the liquid outlet pipe 13 according to the setting parameters of the PLC electric control box 12, so as to provide convenience for the etching operation.

[0036] Please refer to Figure 2 and Figure 4 The outer surface of the stirring tank 1 is fixedly connected with the connecting pipe 5, and the inner surface of the stirring tank 1 is provided with the filtering mechanism 6. One end of the connecting pipe 5 is fixedly connected with the water pump 2, and the connecting pipe 5 facilitates the water pump 2 to extract the mixed liquid in the stirring tank 1. The filtering mechanism 6 can filter the solid substances such as waste residues generated in the mixing process of the etching liquid, so as to avoid the waste residues entering the printed circuit board along with the etching liquid and causing damage to the circuit board.

[0037] The filtering mechanism 6 comprises a filtering box 601 fixed on the inner wall of the stirring tank 1, and a filtering plate 602 fixedly connected in the filtering box 601. The filtering box 601 can provide support for each device of the filtering mechanism 6. The filtering plate 602 is internally provided with a group of filter holes with certain specifications. The etching liquid can pass through the filter holes and be pumped to the liquid storage tank 3 by the water pump 2, while the solid particles such as waste residues carried by the etching liquid are blocked on the filtering plate 602, so as to avoid damage to the circuit board caused by the solid particles and improve the etching effect of the device.

[0038] The middle part of the filter plate 602 is rotationally connected with a transmission rod 603, the end of the transmission rod 603 is fixedly connected with a group of water flow driving plates 604, the water flow driving plates 604 have a certain inclination angle, when the water pump 2 extracts the etching solution in the stirring tank 1, the water flow driving plates 604 will rotate under the impact of the solution, the rotation of the water flow driving plates 604 can drive the transmission rod 603 to rotate, thereby providing power for the cleaning of the cleaning brush 605, and the power structure of the device is simplified.

[0039] The inner wall of the filter box 601 is fixedly connected with a support plate 606, the transmission rod 603 penetrates through the support plate 606 and is rotationally connected with the support plate 606, the support plate 606 and the filter plate 602 can provide support for the rotation of the transmission rod 603, so that the transmission rod 603 can remain stable during rotation, avoiding the instability of the water flow driving plates 604 under the impact of the solution, and improving the stable cleaning operation of the filtering mechanism 6.

[0040] One end of the transmission rod 603 is fixedly connected with a cleaning brush 605, the cleaning brush 605 is slidingly connected with the filter plate 602, the cleaning brush 605 has hard bristles on the surface close to the filter plate 602, when the transmission rod 603 rotates, it can drive the cleaning brush 605 to rotate on the surface of the filter plate 602, the rotation of the cleaning brush 605 can clean the filter holes on the filter plate 602, avoiding the blockage of the filter holes by solid particles and affecting the extraction operation of the water pump 2 on the etching solution.

[0041] Working principle: The staff first puts the raw materials of the etching solution into the stirring tank 1 through the feeding pipe 11, and then starts the stirring motor, the stirring motor drives the rotating rod 7 to rotate, the rotating rod 7 drives the stirring rod 8 to rotate, thereby stirring the mixed solution in the stirring tank 1, when the liquid level sensor 4 detects that the etching solution in the liquid storage tank 3 is insufficient, it will transmit an adding signal to the PLC electric control box 12, after receiving the signal, the PLC electric control box 12 will start the water pump 2, the starting of the water pump 2 can extract the etching solution in the stirring tank 1 to the liquid storage tank 3, when the liquid level in the liquid storage tank 3 reaches the set threshold value of the liquid level sensor 4, the liquid level sensor 4 will transmit a stop adding signal to the PLC electric control box 12, at this time the PLC electric control box 12 will control the water pump 2 to stop, thereby realizing the automatic adding operation of the etching solution. When the etching solution passes through the filter box 601, the filter plate 602 will filter out the solid particles carried in the solution, and the water flow driving plates 604 will drive the transmission rod 603 to rotate under the impact of the solution, the rotation of the transmission rod 603 can drive the cleaning brush 605 to clean the surface of the filter plate 602, avoiding the blockage of the filter plate 602 by solid particles and affecting the delivery efficiency of the solution.

[0042] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An etching solution automatic adding device, comprising a stirring tank (1), characterized in that: The outside of the stirring tank (1) is provided with a water pump (2) and a liquid storage tank (3), the outer surface of the liquid storage tank (3) is fixedly provided with a liquid level sensor (4), the outer surface of the stirring tank (1) is fixedly communicated with a connecting pipe (5), and the inside of the stirring tank (1) is provided with a filtering mechanism (6); The filtering mechanism (6) comprises a filtering box (601) fixed on the inner wall of the stirring tank (1), the inside of the filtering box (601) is fixedly connected with a filtering plate (602), the middle part of the filtering plate (602) is rotatably connected with a transmission rod (603), and the end of the transmission rod (603) is fixedly connected with a group of water flow driving plates (604).

2. The etching solution automatic adding device according to claim 1, wherein: One end of the transmission rod (603) is fixedly connected with a cleaning brush (605), and the cleaning brush (605) is slidably connected with the filtering plate (602).

3. The etching solution automatic adding device according to claim 1, wherein: The inner wall of the filtering box (601) is fixedly connected with a support plate (606), and the transmission rod (603) penetrates through the support plate (606) and is rotatably connected with the support plate (606).

4. The etching solution automatic adding device according to claim 1, wherein: The inside of the stirring tank (1) is rotatably connected with a rotating rod (7), and the outer surface of the rotating rod (7) is fixedly connected with a group of stirring rods (8).

5. The etching solution automatic adding device according to claim 1, wherein: The top end of the stirring tank (1) is fixedly provided with a pressure relief valve (9), and the end of the pressure relief valve (9) is fixedly connected with a purification assembly (10).

6. The etching solution automatic adding device according to claim 1, wherein: The top surface of the stirring tank (1) is fixedly communicated with a feeding pipe (11), and the outer surface of the stirring tank (1) is fixedly provided with a PLC electric control box (12).

7. The etching solution automatic adding device according to claim 1, wherein: The outer surface of the liquid storage tank (3) is fixedly communicated with a liquid outlet pipe (13), and the inside of the liquid outlet pipe (13) is fixedly provided with an electric valve (14).

8. The etching solution automatic adding device according to claim 1, wherein: The outer surface of the stirring tank (1) is hingedly connected with a sealing door (15) through a pin shaft, and the inside of the sealing door (15) is fixedly provided with an observation window.

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