Network transformer ultrasonic cleaning device

Abstract

The utility model discloses a network transformer ultrasonic cleaning device relates to ultrasonic cleaning equipment technical field includes: square tubular passageway, the cleaning tank and rinsing tank of sequentially intercommunicative arrangement below the passageway, be located in the passageway tail end's air -drying mechanism, the passageway front end is equipped with the closing plate, be equipped with the axial fan for pumping air on the closing plate, the top of passageway is equipped with the guide rail through the air -drying mechanism, the guide rail is hanged with the transport board through the sliding block, the transport board bottom surface is equipped with the electric lever, the piston rod of electric lever is connected to load the cage, the exhaust treatment device of the axial fan is connected through the airflow pipe. The utility model constructs a square tubular passageway through all processes of feeding, cleaning, rinsing, air -drying and discharging, and forms the stable negative pressure environment of the axial fan at the passageway front end, can effectively guide the solvent gas volatilized in the cleaning tank to the exhaust treatment device.

Description

Technical Field

[0001] This utility model belongs to the technical field of ultrasonic cleaning equipment, specifically relating to an ultrasonic cleaning device for network transformers. Background Technology

[0002] During the manufacturing process of network transformers, especially after they are soldered to circuit boards, various contaminants typically remain on the surface of the workpiece. These mainly include: soldering flux residue, solder balls and slag, as well as dust and grease from the production environment. If these residues are not effectively removed, they will cause serious quality and reliability problems: acidic flux will absorb moisture and corrode component leads and solder joints; loose solder balls may cause short circuits; and the contaminants as a whole will significantly reduce the insulation performance between transformer leads, affecting its critical signal isolation function.

[0003] To ensure the long-term electrical reliability of the product and meet the requirements of subsequent processes (such as potting and sealing), the network transformer must be thoroughly cleaned. However, cleaning precision electronic components with ordinary water is not feasible because the minerals in the water will form conductive scale, causing secondary pollution. Currently, the industry generally uses solvent-based cleaning agents, which are highly efficient, volatile, and leave no residue, thus effectively ensuring the electrical performance of the product.

[0004] However, this solution has significant drawbacks: solvent-based cleaning agents are highly volatile and easily generate harmful volatile substances during production. If the cleaning equipment is not sufficiently sealed, these volatile substances will escape into the working environment, posing a potential threat to the health of operators and contradicting increasingly stringent environmental protection requirements.

[0005] Therefore, a new type of cleaning device is needed that can effectively solve the problem of volatile matter emission while leveraging the technological advantages of solvent-based cleaning agents. Utility Model Content

[0006] In order to overcome the problems existing in the background art, this utility model provides an ultrasonic cleaning device for network transformers.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an ultrasonic cleaning device for network transformers, comprising: a square tubular channel, a cleaning tank and a rinsing tank sequentially connected below the channel, and a drying mechanism located at the end of the channel; a sealing plate is provided at the front end of the channel, and an axial flow fan for air extraction is provided on the sealing plate; a guide rail passing through the drying mechanism is provided at the top end of the channel, and a transport plate is suspended on the guide rail by a slider; an electric rod is provided on the bottom surface of the transport plate, and the piston rod of the electric rod is connected to a loading cage; the axial flow fan is connected to a waste gas treatment device through an airflow pipe.

[0008] Preferably, the cleaning tank includes: a tank body, an electric heating rod disposed at the bottom of the tank body, a plurality of ultrasonic transducers disposed on the four side walls of the tank body, a temperature sensor disposed in the tank body, and a liquid level sensor disposed in the tank body; the ultrasonic transducers are connected to an ultrasonic generator; a water inlet is provided on the side wall of the tank body, a drain outlet is provided at the bottom of the tank body, and the tank body is filled with a solvent-based cleaning agent.

[0009] Preferably, a three-way valve is provided on the water inlet, and a ball valve is provided on the branch pipe of the three-way valve.

[0010] Preferably, the main pipe of the three-way valve is connected to the outlet pipe of the circulating water pump, the inlet pipe of the circulating water pump is connected to the inlet of the cartridge filter, and the outlet of the cartridge filter is connected to the drain outlet.

[0011] Preferably, the rinsing tank includes a tank body, wherein a conductivity sensor is provided in the tank body, the water inlet is provided with a water inlet valve connected to a deionized water container, the drain outlet is provided with a drain valve, and the tank body is filled with deionized water.

[0012] Preferably, the drying mechanism consists of several fans located at the bottom and side walls of the channel.

[0013] Preferably, the front end of the channel is provided with a feeding area, the feeding area is provided with a feeding door, and the rear end of the drying mechanism is provided with a discharging area, the discharging area is provided with a discharging door.

[0014] Preferably, the sidewall of the loading cage is a perforated plate, the top surface of the loading cage is connected to the piston rod of the electric rod, and a grid door is hinged to the side of the loading cage facing the unloading area and the unloading gate.

[0015] Preferably, the channel is provided with a lead screw parallel to the guide rail, the channel is provided with a servo motor that drives and connects to the lead screw, and the transport plate is provided with a transmission block that meshes with the lead screw.

[0016] Preferably, the transport plate is equipped with an inductive proximity sensor, and the channel is provided with sensing points located in the loading area, the washing tank, the rinsing tank, the drying mechanism, and the unloading area.

[0017] Compared with existing technologies, this invention has the following advantages: This invention constructs a square tubular channel that runs through all processes including feeding, cleaning, rinsing, drying, and unloading, physically isolating the entire cleaning process from the external environment. Combined with the stable negative pressure environment created by the axial flow fan at the front end of the channel, it effectively guides the solvent gases volatilized in the cleaning tank to the waste gas treatment device, fundamentally preventing the diffusion of harmful volatiles into the work area, protecting the health of operators, and meeting environmental protection requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an ultrasonic cleaning device for network transformers. Figure 2 This is a cross-sectional structural diagram of an ultrasonic cleaning device for network transformers. Figure 3 This is a schematic diagram of the cleaning tank. Figure 4 This is a schematic diagram of the rinsing tank. Figure 5 This is a schematic diagram of the material feeding area.

[0019] In the diagram: 1. Channel; 2. Washing tank; 3. Rinsing tank; 4. Drying mechanism; 5. Axial flow fan; 6. Guide rail; 7. Slider; 8. Transport plate; 9. Electric rod; 10. Loading cage; 11. Tank body; 12. Electric heating rod; 13. Ultrasonic transducer; 14. Temperature sensor; 15. Liquid level sensor; 16. Filter cartridge; 17. Circulating water pump; 18. Three-way valve; 19. Ball valve; 20. Conductivity sensor; 21. Water inlet valve; 22. Drain valve; 23. Feeding area; 24. Feeding gate; 25. Discharge area; 26. Discharge gate; 27. Grid gate; 28. Lead screw; 29. ​​Inductive proximity sensor; 30. Sensing point; 31. Fan; 32. Sealing plate; 33. Servo motor; 34. Transmission block. Detailed Implementation

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below to facilitate understanding by those skilled in the art.

[0021] Please see Figures 1 to 5 This embodiment provides an ultrasonic cleaning device for network transformers, comprising: a square tubular channel 1, a cleaning tank 2 and a rinsing tank 3 sequentially connected below the channel 1, and a drying mechanism 4 located at the tail end of the channel 1; a sealing plate 32 is provided at the front end of the channel 1, and an axial flow fan 5 for air extraction is provided on the sealing plate 32; a guide rail 6 passing through the drying mechanism 4 is provided at the top end of the channel 1, and a transport plate 8 is suspended on the guide rail 6 by a slider 7; an electric rod 9 is provided on the bottom surface of the transport plate 8, and the piston rod of the electric rod 9 is connected to a loading cage 10; the axial flow fan 5 is connected to a waste gas treatment device through an airflow pipe. The waste gas treatment device is existing technology, and in this embodiment, an activated carbon adsorption box is preferably used. The axial flow fan 5 guides the airflow from the drying mechanism 4 into the activated carbon adsorption box to prevent gas escape. Ball bearings are provided inside the slider 7 to reduce friction.

[0022] The cleaning tank 2 includes: Tank 11: Used to hold solvent-based cleaning agents.

[0023] Heating and Ultrasonic Functions: An electric heating rod 12 is provided at the bottom of the tank 11 to heat the cleaning agent and improve cleaning efficiency. Several ultrasonic transducers 13 are provided on the four side walls of the tank 11. These transducers are connected to an ultrasonic generator and perform powerful cleaning through cavitation effect.

[0024] Monitoring Unit: The tank 11 is also equipped with a temperature sensor 14 and a liquid level sensor 15 for real-time monitoring of the cleaning process. The temperature sensor 14, the electric heating rod 12, and the controller are linked for temperature control; the controller executes a PID control program. The liquid level sensor 15, linked with the controller, reminds workers to add solvent-based cleaning agents.

[0025] Liquid circulation: The tank 11 has an inlet on its side wall and a drain at its bottom. The circulating filtration system connects these ports via piping: the inlet of the cartridge filter 16 is connected to the drain, and its outlet is connected to the inlet of the circulating water pump 17 via a pipe. The outlet of the circulating water pump 17 is then connected to the main pipe of the three-way valve 18 via a pipe. The circulating water pump 17 drives the solvent-based cleaning agent to circulate within the cartridge filter 16, keeping the cleaning agent clean and extending its service life and effectiveness. The other two ports of the three-way valve 18 lead to the inlet and a branch pipe with a ball valve 19, which can be used to add new liquid.

[0026] The rinsing tank 3 has a similar structure to the cleaning tank 2, but it is filled with deionized water to remove cleaning agent residue from the workpiece surface. Its distinguishing feature is: A conductivity sensor 20 is installed inside the tank 11 to monitor the cleanliness of the rinsing water and determine whether it needs to be replaced. The conductivity sensor 20 is electrically connected to the controller.

[0027] The inlet is equipped with an inlet valve 21 connected to the deionized water container, and the outlet is equipped with a drain valve 22 for draining deionized water that is not clean enough.

[0028] The air drying mechanism 4 consists of several fans 31 located at the bottom and side walls of the channel 1.

[0029] The front end of the channel 1 is provided with a loading area 23, which is provided with a loading gate 24. The rear end of the drying mechanism 4 is provided with a unloading area 25, which is provided with a unloading gate 26. The loading gate 24 and the unloading gate 26 are square flap gates used for loading and unloading network sensors.

[0030] The sidewall of the loading cage 10 is a perforated plate. The top surface of the loading cage 10 is connected to the piston rod of the electric rod 9. A grid door 27 is hinged to the side of the loading cage 10 facing the unloading area 25 and the unloading gate 26. This structure allows solvent-based cleaning agents and deionized water to penetrate, and, in conjunction with the ultrasonic transducer 13, cleans the network sensor. The grid door 27 is equipped with a rotary latch for opening and closing. A rotary handle is installed on the outside of the grid door 27. The latch / lever is coaxially connected to the handle and is usually a metal rod. The lock seat is fixed to the main frame of the loading cage 10 and has a groove or hole for the latch to be inserted and locked.

[0031] The channel 1 is equipped with a lead screw 28 parallel to the guide rail 6. A servo motor 33, which drives the lead screw 28, is mounted on the channel 1. A transmission block 34, which meshes with the lead screw 28, is mounted on the transport plate 8. An inductive proximity sensor 29 is mounted on the transport plate 8. Sensing points 30 are located within the channel 1 at the loading area 23, the cleaning tank 2, the rinsing tank 3, the drying mechanism 4, and the unloading area 25. Both the inductive proximity sensor 29 and the servo motor 33 are electrically connected to the controller.

[0032] The controller uses a Siemens S7-1200 series (CPU1215C) PLC as the main controller, which is responsible for executing the cleaning program set by the user, processing all sensor signals, issuing execution instructions, and exchanging data with the human-machine interface.

[0033] The human-machine interface uses a 7-inch or larger color touch screen, preferably a Siemens Smart Panel, to display the equipment's operating status (such as the position of each workstation, temperature, liquid level, conductivity), set process parameters (such as cleaning time, temperature, rinsing time, drying time, etc.), start and stop the equipment, and display prompt information.

[0034] The controller I / O module expansion includes: Digital input: Used to receive signals from inductive proximity sensors 29, human-machine interfaces, etc.

[0035] Digital output: Used to control the on / off state of servo motor 33 driver, electric lever 9, axial flow fan 5, circulating water pump 17 and alarm indicator lights, etc.

[0036] Analog input: Used to receive 4-20mA or 0-10V standard signals from temperature sensor 14, liquid level sensor 15 and conductivity sensor 20.

[0037] Temperature control module: The PLC outputs control signals to the solid-state relay of the electric heating rod 12 through the analog output module or a dedicated PID control function block to achieve precise temperature regulation.

[0038] Servo drive system: A driver matching the servo motor 33 is selected, preferably Siemens V90 series. It receives pulse and direction signals from the PLC and precisely controls the speed and angle of the servo motor 33, thereby achieving precise positioning of the transport plate 8 between each station through the lead screw 28 transmission mechanism.

[0039] Control logic: Initialization and Reset: After the equipment is powered on, the system automatically executes the reset program, driving the transport plate 8 to the origin position of the loading area 23, waiting for the start command.

[0040] Operation process: Material loading confirmation: The operator closes the loading door 24 and confirms via the touch screen to start the automatic cycle.

[0041] Precise positioning and conveying: According to a preset program, the PLC uses a servo system to move the transport plate 8 sequentially to directly above the washing tank 2, rinsing tank 3, drying mechanism 4, and unloading area 25. The switching of each position is triggered by the inductive proximity sensor 29 and the corresponding sensing point 30, ensuring accurate positioning.

[0042] Process control of cleaning tank 2: After the transport plate 8 is positioned, the electric boom 9 descends, immersing the loading cage 10 in the cleaning agent.

[0043] The PLC immediately starts the ultrasonic generator and, based on the feedback from the temperature sensor 14, executes the PID control algorithm to dynamically adjust the power of the electric heating rod 12, so that the cleaning agent temperature is stabilized at the set value.

[0044] The circulating water pump 17 runs continuously during the cleaning process to filter the cleaning agent.

[0045] Once the cleaning time is up, the electric boom 9 lifts the loading cage 10 and hovers briefly to drain excess liquid.

[0046] Rinse Tank 3 Process Control: The process is similar to that of cleaning tank 2, but deionized water rinsing is started.

[0047] The PLC monitors the conductivity sensor 20 in real time. When the conductivity exceeds the set threshold, it indicates water contamination. The touchscreen will prompt the operator to change the rinsing water and can automatically open the drain valve 22 and the inlet valve 21 to change the water. Drying and unloading: After the workpiece enters the drying area, the PLC starts the fan 31 to dry it at regular intervals. Finally, it is moved to the unloading area 25 to wait for the operator to pick it up.

[0048] Liquid level and temperature protection: If the liquid level in cleaning tank 2 is too low or the temperature is abnormally high, the PLC will immediately stop heating and issue an alarm.

[0049] Axial flow fan 5 is set to run continuously throughout the entire cleaning cycle. Its start signal is linked to the overall start signal of the equipment, ensuring that negative pressure is formed from the very first process, effectively collecting volatiles and sending them to the activated carbon adsorption box through the airflow pipe, thus achieving environmental protection throughout the entire process.

[0050] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An ultrasonic cleaning device for network transformers, characterized in that, include: A square tubular channel (1) is connected in sequence with a cleaning tank (2) and a rinsing tank (3) below the channel (1), and a drying mechanism (4) is located at the end of the channel (1); a sealing plate (32) is provided at the front end of the channel (1), and an axial flow fan (5) for exhaust is provided on the sealing plate (32); a guide rail (6) is provided at the top end of the channel (1) through the drying mechanism (4), and a transport plate (8) is suspended on the guide rail (6) by a slider (7). An electric rod (9) is provided on the bottom surface of the transport plate (8), and the piston rod of the electric rod (9) is connected to a loading cage (10); the axial flow fan (5) is connected to a waste gas treatment device through an airflow pipe.

2. The ultrasonic cleaning device for network transformers according to claim 1, characterized in that, The cleaning tank (2) includes: a tank body (11), an electric heating rod (12) at the bottom of the tank body (11), several ultrasonic transducers (13) on the four side walls of the tank body (11), a temperature sensor (14) inside the tank body (11), and a liquid level sensor (15) inside the tank body (11); the ultrasonic transducers (13) are connected to an ultrasonic generator; the side walls of the tank body (11) are provided with water inlets, the bottom of the tank body (11) is provided with drain outlets, and the tank body (11) is filled with solvent-based cleaning agent.

3. The ultrasonic cleaning device for network transformers according to claim 2, characterized in that, A three-way valve (18) is provided on the inlet, and a ball valve (19) is provided on the branch pipe of the three-way valve (18).

4. The ultrasonic cleaning device for network transformers according to claim 3, characterized in that, The main pipe of the three-way valve (18) is connected to the outlet pipe of the circulating water pump (17), the inlet pipe of the circulating water pump (17) is connected to the inlet of the cartridge filter (16), and the outlet of the cartridge filter (16) is connected to the drain outlet.

5. The ultrasonic cleaning device for a network transformer according to claim 2, characterized in that, The rinsing tank (3) includes a tank body (11), wherein a conductivity sensor (20) is provided inside the tank body (11), the water inlet is provided with a water inlet valve (21) connected to a deionized water container, the drain outlet is provided with a drain valve (22), and the tank body (11) is filled with deionized water.

6. The ultrasonic cleaning device for network transformers according to claim 1, characterized in that, The air drying mechanism (4) consists of several fans (31) located at the bottom and side walls of the channel (1).

7. The ultrasonic cleaning device for network transformers according to claim 1, characterized in that, The front end of the channel (1) is provided with a feeding area (23), the feeding area (23) is provided with a feeding door (24), the rear end of the drying mechanism (4) is provided with a discharging area (25), and the discharging area (25) is provided with a discharging door (26).

8. The ultrasonic cleaning device for a network transformer according to claim 7, characterized in that, The side wall of the loading cage (10) is a perforated plate. The top surface of the loading cage (10) is connected to the piston rod of the electric rod (9). A grid door (27) is hinged to the side of the loading cage (10) facing the unloading area (25) and the unloading door (26).

9. The ultrasonic cleaning device for a network transformer according to claim 7, characterized in that, The channel (1) is provided with a lead screw (28) parallel to the guide rail (6), and the channel (1) is provided with a servo motor (33) that drives the lead screw (28). The transport plate (8) is provided with a transmission block (34) that meshes with the lead screw (28).

10. The ultrasonic cleaning device for a network transformer according to claim 9, characterized in that, The transport plate (8) is equipped with an inductive proximity sensor (29), and the channel (1) is equipped with sensing points (30) located in the loading area (23), the cleaning tank (2), the rinsing tank (3), the drying mechanism (4), and the unloading area (25).

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