Railway high-precision plate ultrasonic cleaning device

Abstract

The utility model discloses an ultrasonic cleaning device for a high-precision plate of a railway, which is used for cleaning and cleaning the high-precision plate and meeting the use requirements of field mobile operation. A cleaning liquid self-purification filtering module is mounted below the cleaning tank, a negative pressure dust removal barrel is mounted below the cleaning tank, a filtering material and a negative pressure fan are arranged in the negative pressure dust removal barrel, and a negative pressure air suction opening is formed in a storage basket on one side and is used for adsorbing and removing dust on attachments on the circuit board; and a positive-pressure air blowing opening is formed in the storage basket on the other side and is used for blowing and drying the cleaned circuit board. According to the ultrasonic cleaning device, negative pressure adsorption pretreatment, ultrasonic cleaning and positive pressure air drying are combined into a whole, the surface and the interior of a plate can be thoroughly cleaned, dirt and pollutants which are difficult to treat are removed, and the integrity and reliability of the plate are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cleaning technical field of electronic component board parts such as circuit board. BACKGROUND

[0002] Railway communication is an important part of modern railway transportation production system, is the key infrastructure of railway transportation safety, is the most advanced and most high-tech professional system with the most concentrated technology, and together with line, bridge, tunnel, power supply, signal and other equipment to form a complete railway transportation infrastructure system. Railway communication runs throughout the whole network, not only provides basic telecommunications services such as voice and data bearing for railway transportation, production management and service, but also provides advanced and flexible command and dispatch means for train operation command. The maintenance quality of railway communication transmission equipment board parts is directly related to the communication quality of railway communication, and the transmission equipment board part is a kind of precise PCB (printed circuit board) with complex process and high integration. Nowadays, the design of PCB tends to be miniaturized, the pins and pads are closer and closer, and the gap is smaller and smaller. In the environment with low cleanliness, dust and other pollutants may be stuck in the gap. If the smaller particles are left between the two pads, short circuit may be caused. If it is placed or used in a humid environment, the residual moisture may appear white, and even short circuit may occur, which may cause electronic components to be broken down.

[0003] In the daily maintenance of communication transmission equipment board parts, the maintenance personnel usually use brushes, blowers and other cleaning tools to clean the board parts, which cannot guarantee the cleanliness of the board parts and may cause physical damage to the board parts, even damage the board parts.

[0004] Therefore, it is necessary to study a cleaning and maintenance device, which can thoroughly and effectively clean the dust and other organic and inorganic pollutants on the long-term used communication transmission board parts, and after cleaning, the board parts are maintained with a coating, which can achieve the effects of dustproof, antistatic and anticorrosion. By designing the cleaning and maintenance platform, the high-precision board parts are regularly cleaned and maintained, the cleaning and maintenance efficiency of the board parts is improved, the failure rate of the communication equipment is reduced, and the safety of personnel and equipment is ensured. Utility model content

[0005] Based on the above purpose, the utility model provides a railway high-precision board part ultrasonic cleaning device for realizing the cleaning and washing of high-precision board parts and meeting the use requirements of field mobile operation.

[0006] The technical scheme adopted by the utility model to solve the technical problems is:

[0007] The utility model relates to a kind of railway high-precision plate ultrasonic cleaning device, including shell, cleaning tank, cleaning liquid self-purification filtering module and electric control system, wherein electric control system is single-chip microcomputer control system, ultrasonic generator and ultrasonic transducer are installed in shell and act on the cleaning tank to generate ultrasonic wave, characterized in that, cleaning tank is installed cleaning liquid self-purification filtering module below, micro pump and filter material are arranged in the cleaning liquid self-purification filtering module and communicate with cleaning tank in cleaning tank;Negative pressure dust removal barrel is installed below cleaning tank, filter material and negative pressure fan are arranged in the negative pressure dust removal barrel, and negative pressure air port and positive pressure air port are arranged on the negative pressure dust removal barrel, and the left and right sides of the shell are respectively installed with basket, and negative pressure suction port is arranged on the basket of one side, and the negative pressure suction port is connected with the negative pressure air port on the negative pressure dust removal barrel by hose and is adsorbed to dust removal on the adherend on the circuit board, and positive pressure air outlet is arranged on the basket of the other side, and the positive pressure air outlet is connected with the positive pressure air port on the negative pressure dust removal barrel by hose and blows and dries the cleaned circuit board.

[0008] Further, the basket where the positive pressure air outlet is installed is installed with the spray nozzle of negative ion agent, the spray nozzle is connected with spray system, and the circuit board in drying process is sprayed with negative ion.

[0009] Further, at least one basket is provided with far-infrared opposite sensor, when detecting that there is circuit board, negative pressure fan and spray system start.

[0010] Further, the cleaning tank is provided with water inlet and drain.

[0011] Further, the shell and cleaning tank are of stainless steel material, and are installed with cover.

[0012] Further, the cleaning tank is further provided with concave dirt collection box.

[0013] Further, the concave dirt collection box is provided with circular grid small hole.

[0014] Further, the bottom of the shell is provided with walking wheel and circular support foot.

[0015] Further, the cleaning tank is further installed with washing roller, and the washing roller is installed at central position inside the cleaning tank by bearing assembly and is driven by motor.

[0016] The utility model has the advantages that:

[0017] The ultrasonic cleaning device is combined by negative pressure adsorption pretreatment, ultrasonic cleaning and positive pressure drying, can clean the surface and interior of plate completely, remove difficult-to-handle dirt and pollutants, ensure the integrity and reliability of plate, and through the use of pretreatment and self-purification module, the replacement frequency of cleaning liquid can be reduced.

[0018] The positive pressure air and the negative pressure air share a set of negative pressure air fans, so that energy consumption is reduced, which is extremely friendly for field work.

[0019] By drying and spraying the negative ion agent on the cleaned circuit board, the cleaned board has better surface quality and functional performance, so that the risk of failure or damage of the equipment board is reduced, and the reliability and service life of the board are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the utility model.

[0021] Figure 2 It is a side view of the utility model.

[0022] Figure 3 It is a control circuit logic diagram in the device.

[0023] Figure 4 It is a circuit diagram.

[0024] Figure 5 It is a motor control logic block diagram.

[0025] Figure 6 It is a structure diagram of the negative pressure dust removal barrel.

[0026] In the drawings:

[0027] 10 shell, 11 ultrasonic vibrator, 111 ultrasonic generator, 12 cover, 13 cleaning tank,

[0028] 20 cleaning liquid self-purification filter module,

[0029] 30 negative pressure dust removal barrel, 31 filter material, 32 negative pressure fan, 33 negative pressure air port, 34 positive pressure air port, 35 storage basket or storage box, 351 negative pressure air inlet, 352 positive pressure air outlet. DETAILED DESCRIPTION

[0030] The structure design of the cleaning device includes a shell, a cleaning tank, a cleaning liquid self-purification filter module, a washing roller, a negative pressure dust removal system, a spraying system, and an electric control system. The cleaning device is provided with the negative pressure dust removal system which has a negative pressure air port and a positive pressure air port. The negative pressure dust removal system performs pre-cleaning on the circuit board, and the positive pressure air generated by the positive pressure air port blows air on the cleaned circuit board to accelerate drying. Two processes are realized by one fan. Figure 1 to Figure 6 will be described in detail.

[0031] Reference Figures 1-2The shell 10 of the device is made of stainless steel, and several ultrasonic transducers 11 are installed inside the shell. A cover 12 is provided to isolate the ultrasonic transducers from the outside environment and to protect the ultrasonic transducers. The cover can prevent the water splashed during the cleaning process from contacting the ultrasonic transducers and causing short circuit of the circuit, and can also prevent dust from adhering to the ultrasonic transducers and affecting the cleaning effect.

[0032] The cleaning device is provided with a cleaning tank 13 inside the shell. The ultrasonic transducers 11 act on the water in the cleaning tank. A cleaning liquid self-purification filter module 20 is provided below the cleaning tank. The filter module is provided with a micro-pump and filter material to purify the water in the cleaning tank. The cleaning tank is provided with a water inlet and a water outlet. The water inlet is a connection hub of the cleaning tank and the water pipeline outside the cleaning tank. The water outside the cleaning tank flows into the cleaning tank through the water inlet to supplement the water. At the same time, the filter module can also stir the water in the cleaning tank, thereby shortening the cleaning time.

[0033] An ultrasonic generator 111 is installed in the space below the cleaning tank to generate ultrasonic waves for the ultrasonic transducers.

[0034] A concave dirt collection box is provided on the right side of the cleaning tank. The concave dirt collection box can be detached and installed. The bottom of the cleaning tank where the concave dirt collection box is located is provided with a water inlet and outlet of the filter module for self-purification of the cleaning water.

[0035] Further, a circular mesh hole with a certain diameter is formed in the concave dirt collection box. When the shape of the dirt is too large, the dirt can be left inside the dirt collection box. When the amount and quality of the dirt accumulated in the dirt collection box reach a certain amount, the entire dirt collection box can be detached, and the dirt inside the dirt collection box can be poured into a fixed position.

[0036] A negative pressure dust removal bucket 30 is also installed in the space below the cleaning tank 13. The negative pressure dust removal bucket is provided with filter material 31 and negative pressure fan 32. The negative pressure dust removal bucket is provided with negative pressure air inlet 33 and positive pressure air outlet 34. In the working state of the negative pressure fan, the negative pressure air inlet inhales air, and the positive pressure air outlet exhales air. In this process, the impurities in the air are filtered by the filter material.

[0037] Reference Figure 1In the above-mentioned cleaning machine shell, a storage basket or a storage box 35 is installed on the left and right sides, respectively, wherein the left storage basket is provided with a negative pressure air inlet 351 connected to the negative pressure air inlet of the negative pressure dust removal barrel through a hose to form a negative pressure air duct, and when the circuit board to be pretreated is placed in the storage basket, the negative pressure air can preliminarily remove the dust on the circuit board, which can reduce the subsequent dust removal pressure. The right storage basket is provided with a positive pressure air outlet 352 connected to the positive pressure air outlet of the negative pressure dust removal barrel through a hose to form a positive pressure air duct, and when the circuit board to be dried is placed in the storage basket, the circuit board can be quickly dried by blowing, accelerating the drying process, especially the rapid evaporation of moisture in the gaps of small components.

[0038] Further, a negative ion agent spray nozzle is installed on the storage basket where the positive pressure air outlet is located, which is connected to the spraying system to spray negative ions on the circuit board during drying for surface protection. Preferably, a far-infrared radiation sensor is arranged in the storage basket, and the above-mentioned negative pressure fan and spraying system are started only when the circuit board is detected. When the circuit board is not detected, the negative pressure fan and the spraying system are paused.

[0039] When the technology is implemented, the cleaning water needs to be replaced after the pre-set cleaning target is reached, the drain is opened, and the sewage is discharged outside through the grid holes.

[0040] The bottom of the above-mentioned cleaning machine is provided with traveling wheels and circular support feet, which have the functions of moving and temporary supporting.

[0041] Further, a washing roller is installed in the above-mentioned cleaning tank 13, which is installed at the central position inside the cleaning tank through a bearing assembly and is driven by a motor, which can facilitate the stirring of the water flow inside the cleaning tank to a greater extent, thereby shortening the entire cleaning time.

[0042] The washing roller is rotated by the driving motor, and different stirring effects of the water flow inside the cleaning tank can be achieved by controlling the different rotating speeds of the motor, which can more effectively remove the stains on the cleaned objects.

[0043] The technology realizes the pre-cleaning, cleaning, drying and maintenance of high-precision transmission plate parts of railway communication, which is safe and reliable. The micro-jet and bubbles generated by ultrasonic excitation can destroy organic matter, inorganic matter and particles on the surface of the precision plate parts, thereby effectively cleaning the surface of various objects, especially for parts with complex surface shapes and deep holes, narrow gaps and other difficult-to-reach places. Therefore, ultrasonic cleaning has a significant cleaning effect on high-precision plate parts of railway communication.

[0044] Further, the cleaning medium mentioned above can use pure water, or can use a special developed circuit board cleaning agent, which mainly absorbs, disperses, dissolves and removes the dust and other pollutants on the surface of the board, and under the physical and chemical actions, gently removes the dust and pollutants from the precision board, reduces the damage and corrosion to the soldering points and elements of the precision board, and improves the service life of the precision board.

[0045] By drying the circuit board and spraying the negative ion agent, the precision board can be maintained and conserved, so that the precision board has the waterproof, moisture-proof, dust-proof "three-proof" performance, and the cold and hot impact resistance, aging resistance, radiation resistance, salt mist resistance, corrosion resistance, vibration resistance and other performances. Before the new precision board is applied or after the precision board is cleaned, the overall performance of the precision board is improved, the communication failure rate is reduced, and the safety of the communication channel is protected.

[0046] The microprocessor of the control system uses STC89C51 single-chip microcomputer to control the overall cleaning process of the cleaning machine, and controls factors including flow, frequency, temperature, time and the like. The automatic control platform performs safe, standardized and effective cleaning, automatically performs work according to the specified program or instruction, ensures labor safety, reduces labor intensity and improves cleaning quality.

[0047] The control system automatically controls the spraying system, negative pressure system, ultrasonic vibrator, filter module and the like. For example, the speed regulation method of changing the armature voltage is used for the motor. The hardware of the control system mainly includes a 12 V DC motor module, a keyboard speed control module, an oscilloscope waveform observation module, an STC89C51 single-chip microcomputer module, an L298N motor drive module and the like. The single-chip microcomputer has three necessary conditions for normal work: power supply, clock circuit and reset circuit. The L298N module is a double-H bridge motor drive chip module, which has a logic circuit with four channels. The VS end is connected to the motor drive power supply, and the logic control power supply is connected to VSS. The ENA and ENB pins are control enable ends. When the motor rotates forward, the IN1 pin and the IN2 pin input PWM signals and low-level signals respectively. When the motor reverses, the signals of the IN1 pin and the IN2 pin are interchanged, so as to control the forward and reverse rotation of the 12 V DC motor. The speed of the motor can be regulated by changing the duty cycle of the PWM signal. One end of the oscilloscope is connected to the IN1 pin end, and the other end is connected to the IN2 pin end. The oscilloscope is mainly used to observe the duty cycle of the output waveform. The keyboard control module is a separate key module. Different keys are pressed, and the DC motor runs at different speeds and directions. The hardware design of the system is shown in Figure 4 .

[0048] The logic sequence of high and low levels outputted by the single-chip microcomputer output port of the control system is outputted, the logic state of L298N module IN1 and IN2 is given, the control of the motor forward and reverse rotation can be realized. The counter T0 in the single-chip microcomputer has the timing function, the module can save the instruction execution time of reloading the initial value, the calculation method of the timing initial value is simplified, the timing time can be determined quite accurately, so the mode 2 is adopted to generate the square wave. The PWM is connected or disconnected under the fixed frequency, the duty cycle of the DC motor two end voltage can realize the speed regulation of the 12V DC motor by changing the duration of high and low levels. Figure 5 The program is written in Keil according to the flow chart.

[0049] The hardware circuit of the system is built by using Proteus, the hex file generated after the program is successfully compiled is burned into the hardware circuit for simulation analysis.

[0050] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the present application made by those skilled in the art shall fall within the protection scope of the present application defined by the claims.

Claims

1. An ultrasonic cleaning device for high-precision railway plate parts, comprising a housing, a cleaning tank, a cleaning liquid self-purification filter module, and an electronic control system, wherein the electronic control system is a single-chip microcomputer control system, an ultrasonic generator and an ultrasonic vibrator are installed in the housing and act on the cleaning tank to generate ultrasonic waves, characterized in that: A cleaning liquid self-purification filter module is installed below the cleaning tank, and a micro-electric pump and filter material are provided in the cleaning liquid self-purification filter module and are connected to the cleaning liquid in the cleaning tank; a negative pressure dust removal bucket is installed below the cleaning tank, and filter material and a negative pressure fan are provided in the negative pressure dust removal bucket, and negative pressure air outlet and positive pressure air outlet are provided on the negative pressure dust removal bucket, and storage baskets are respectively installed on the left and right sides of the shell, and a negative pressure air suction port is provided on one side of the storage basket, and the negative pressure air suction port is connected to the negative pressure air outlet on the negative pressure dust removal bucket through a hose to absorb and remove dust from attachments on the circuit board; a positive pressure blowing port is provided on the other side of the storage basket, and the positive pressure blowing port is connected to the positive pressure air outlet on the negative pressure dust removal bucket through a hose to blow and dry the cleaned circuit board.

2. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: A negative ion spray nozzle is installed on the storage basket where the positive pressure air outlet is located. The spray nozzle is connected to the spray system to spray negative ions on the circuit board during the drying process.

3. The ultrasonic cleaning device for high-precision railway plate parts according to claim 2, characterized in that: A far-infrared radiation sensor is provided in at least one storage basket. When the presence of a circuit board is detected, the negative pressure fan and the spray system are started.

4. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: The cleaning tank is provided with a water inlet and a drain outlet.

5. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: The shell and the cleaning tank are made of stainless steel and are equipped with a cover.

6. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: A concave dirt collection box is also provided in the cleaning tank.

7. The ultrasonic cleaning device for high-precision railway plate parts according to claim 6, characterized in that: The concave dirt collecting box is provided with circular grid holes.

8. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: The bottom of the shell is provided with walking wheels and circular supporting feet.

9. The ultrasonic cleaning device for high-precision railway plate parts according to claim 1, characterized in that: A scrubbing roller is also installed in the cleaning tank. The scrubbing roller is installed in the central position of the cleaning tank through a bearing assembly and is driven by a motor.

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