Plasma cleaning machine and plasma arc state monitoring device thereof

Abstract

The utility model discloses plasma cleaning machine and plasma arc state monitoring device thereof, and the device includes: fixed mechanism, light guide, arc detection head and detection module, fixed mechanism is configured as the body of connecting plasma cleaning machine, and light guide and detection module set up in fixed mechanism, and arc detection head sets up in light guide and is connected with detection module communication, and one end of light guide is located one side of gun head nozzle and is close to gun head nozzle, when the arc of gun head nozzle, under the action of light guide, arc detection head detects arc and generates the different electric signal transmission of different size to detection module based on the intensity difference of arc, and detection module is configured as with the cleaning machine processing module communication connection of plasma cleaning machine, when the stable arc of gun head nozzle, detection module generates first output signal output to cleaning machine processing module based on electric signal. The utility model can carry out all -round monitoring to plasma arc state in the cleaning process of plasma cleaning machine, and whether stable arc is confirmed in real time.

Description

Technical Field

[0001] This utility model relates to the field of plasma cleaning machine technology, and in particular to a plasma cleaning machine and a plasma arc monitoring device. Background Technology

[0002] Currently, in the atmospheric plasma cleaning machine industry, the detection of plasma arcing status mainly relies on temperature sensors. Before cleaning, the nozzle is directed towards the temperature sensor to generate an arc. When the temperature sensor detects a temperature change, it indirectly indicates that the plasma arcing status is normal. However, the plasma cleaning machine cannot determine whether the arcing is stable during the cleaning process. As the atmospheric plasma cleaning machine industry has increasingly higher quality requirements, it is necessary to directly monitor the plasma arcing status of the plasma cleaning machine throughout the entire process. Utility Model Content

[0003] The purpose of this invention is to provide a plasma cleaner and a plasma arcing state monitoring device, which can monitor the plasma arcing state throughout the cleaning process and confirm in real time whether the arcing is stable.

[0004] To achieve the above objectives, this utility model provides a plasma arcing state monitoring device for a plasma cleaner, comprising: a fixing mechanism, a light guide, an arc detection head, and a detection module. The fixing mechanism is configured to connect to the body of the plasma cleaner. The light guide and the detection module are disposed on the fixing mechanism. The arc detection head is disposed on the light guide and is communicatively connected to the detection module. One end of the light guide is located on one side of the nozzle of the plasma cleaner and close to the nozzle. When the nozzle emits an arc, under the action of the light guide, the arc detection head detects the arc and generates electrical signals of different magnitudes based on the different intensities of the arc, which are transmitted to the detection module. The detection module is configured to communicatively connect to the cleaning processing module of the plasma cleaner. When the nozzle emits a stable arc, the detection module generates a first output signal based on the electrical signal and outputs it to the cleaning processing module.

[0005] Optionally, one side of the fixing mechanism is configured to connect to the nozzle of the plasma cleaner.

[0006] Optionally, the fixing mechanism includes a fixing block and a retaining ring, the retaining ring being connected to one side of the fixing block and sleeved and fixed on the gun head.

[0007] Optionally, the fixing mechanism includes a fixing block and a cover plate. The fixing block forms an accommodating space, and the accommodating space has an opening on the side opposite to the gun head. The detection module is disposed in the accommodating space, and the cover plate closes the opening.

[0008] Optionally, the bottom wall of the fixing block has a protrusion, and a first through hole is formed on the protrusion; the light guide is a light guide tube, which is fixedly installed on the side of the protrusion near the gun head by a connecting block, the connecting block has a second through hole, one end of the light guide tube away from the gun head nozzle is fixedly connected to one side of the connecting block at the second through hole, the other side of the connecting block is fixedly connected to the protrusion, the second through hole and the first through hole are correspondingly connected, the arc light detection head includes a wire, the wire passes through the second through hole and the first through hole and then passes into the accommodating space to connect with the detection module.

[0009] Optionally, the protrusion forms the bottom wall of the fixing block on the side near the gun head; the fixing mechanism further includes a clamping block, which is fixed to the bottom wall of the fixing block and located on the side of the protrusion away from the gun head; a wiring channel is formed between the clamping block and the fixing block, and a wire through hole is formed on the cover plate, through which the wire sequentially passes through the second through hole, the first through hole, the wiring channel and the wire through hole into the accommodating space.

[0010] Optionally, the light guide is a light guide tube, and the arc light detection head is disposed at the end of the light guide tube away from the nozzle of the gun head. The inner wall of the light guide tube is a mirror surface that can reflect arc light to reflect the arc light to the arc light detection head.

[0011] Optionally, the arc detection head is a photoresistor sensor arc detection sensor.

[0012] Optionally, the detection module includes a monitoring end processing module and a relay. The arc detection head is connected to the monitoring end processing module via a first wire, and the relay is connected to the cleaning machine processing module via a second wire. After receiving the electrical signal, the monitoring end processing module processes the electrical signal to obtain a digital signal. The monitoring end processing module presets a corresponding threshold based on whether the nozzle of the gun head is stably arcing. Based on the comparison between the digital signal and the threshold, the monitoring end processing module outputs different control signals. Under the action of different control signals, the relay outputs the first output signal to the cleaning machine processing module, or disconnects from the cleaning machine processing module or outputs the second output signal to the cleaning machine processing module.

[0013] To achieve the above objectives, this utility model also provides a plasma cleaner, comprising: a plasma arc state monitoring device as described above, a gun head, and a cleaning machine processing module, wherein the fixing mechanism is connected to the gun head, and the device-side processing module is used to receive signals from the detection module.

[0014] In this embodiment of the invention, the plasma arc spraying state monitoring device is directly installed on the body of the plasma cleaner. When the nozzle of the gun is spraying an arc, a light guide is used to direct the arc light to the arc detection head, allowing the arc detection head to detect the arc light. The arc detection head can generate electrical signals of different magnitudes based on the different intensities of the detected arc light. That is, the intensity of the arc light and the magnitude of the electrical signal are correlated (positively or negatively correlated). The magnitude of the electrical signal can reflect the intensity of the arc light. When the detection module receives the electrical signal, if the electrical signal reflects a stable arc spraying state of the nozzle, then the arc light intensity detected by the arc detection head is stable. The detection module generates a first output signal to the cleaning machine processing module, which can then confirm that it is currently in a stable arc spraying state. Otherwise, it is in an abnormal state, such as an interrupted arc or an unstable arc spraying state. Therefore, this embodiment of the invention can monitor the stability of the arc spraying state of the plasma cleaner throughout the process, detect abnormal situations such as interrupted arc spraying and unstable arc spraying in real time, and respond promptly, solving problems such as missed cleaning caused by abnormal arc spraying. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the gun head and plasma arc monitoring device of the plasma cleaner according to an embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the plasma jet arc state monitoring device according to an embodiment of the present invention.

[0017] Figure 3 This is an exploded structural diagram of the plasma jet arc state monitoring device according to an embodiment of the present invention.

[0018] Figure 4 This is another exploded structural diagram of the plasma jet arc state monitoring device according to an embodiment of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the photoresistor sensor, arc detection sensor, and light guide tube according to an embodiment of this utility model.

[0020] Figure 6 This is a schematic block diagram of the arc detection head, detection module, and cleaning machine processing module according to an embodiment of the present invention. Detailed Implementation

[0021] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please see Figures 1 to 6 This utility model discloses a plasma cleaning machine.

[0023] The plasma cleaner includes a gun head 1, a cleaning machine processing module 2, and a plasma arc status monitoring device 3.

[0024] Among them, the bottom end of the gun head 1 has a gun head nozzle 9, which sprays an arc.

[0025] The plasma arcing state monitoring device 3 includes: a fixing mechanism 30, a light guide 40, an arc detection head 50, and a detection module 60. The fixing mechanism 30 is configured to connect to the nozzle 1 of the plasma cleaner. The light guide 40 and the detection module 60 are mounted on the fixing mechanism 30. The arc detection head 50 is mounted on the light guide 40 and is communicatively connected to the detection module 60. One end of the light guide 40 is located on one side of the nozzle 9 of the plasma cleaner and close to the nozzle 9. When the nozzle 9 is arcing, the arc detection head 50 detects the arc under the action of the light guide 40 and generates electrical signals of different magnitudes based on the different intensities of the arc, which are transmitted to the detection module 60. The detection module 60 is configured to communicate with the cleaning machine processing module 2 of the plasma cleaner. When the nozzle 9 is stably arcing, the detection module 60 generates a first output signal based on the electrical signal and outputs it to the cleaning machine processing module 2.

[0026] It should be noted that the fixing mechanism 30 may be located in other parts of the body of the plasma cleaner, other than the gun head 1.

[0027] It should be noted that the definition of the light guide 40 being close to the nozzle 9 is that the light guide 40 can receive the arc light when the nozzle 9 is stably spraying an arc.

[0028] In this embodiment of the invention, the plasma arc spraying state monitoring device 3 is directly installed on the body of the plasma cleaner. When the nozzle 9 sprays an arc, the light guide 40 can guide the arc light to the arc light detection head 50, so that the arc light detection head 50 can detect the arc light. The arc light detection head 50 can generate electrical signals of different magnitudes based on the different intensities of the detected arc light. That is, the intensity of the arc light and the magnitude of the electrical signal are correlated (positive or negative). The magnitude of the electrical signal can reflect the intensity of the arc light. When the detection module 60 receives the electrical signal, if the electrical signal reflects a stable arc spraying state of the nozzle 9, then the arc light intensity detected by the arc light detection head 50 is stable. The detection module 60 generates a first output signal to the cleaning machine processing module 2. The cleaning machine processing module 2 can then confirm that it is currently in a stable arc spraying state. Otherwise, it is in an abnormal state, such as an arc break or an unstable arc spraying state. Therefore, this utility model embodiment can monitor the stability of the plasma cleaner's arc spraying state throughout the process, detect abnormal situations such as arc breakage and unstable arc spraying in real time, and respond promptly, thus solving problems such as missed cleaning caused by abnormal arc spraying.

[0029] It should be noted that "real-time detection of abnormal situations such as arc interruption and unstable arc flow" does not mean that specific abnormal states, such as arc interruption, can be clearly identified. Rather, it means that abnormal states outside of stable arc flow can be detected. Of course, settings can be configured as needed to identify specific abnormal states.

[0030] Understandably, when the nozzle 9 is spraying a stable arc, the detection module 60 generates a first output signal based on the electrical signal and outputs it to the cleaning machine processing module 2. In other abnormal situations, such as when the arc is unstable or broken, the detection module 60 will not output a signal to the cleaning machine processing module 2, or it will output a signal different from the first output signal to the cleaning machine processing module 2, so that the cleaning machine processing module 2 can detect the arc abnormality and take action, such as issuing an alarm prompt.

[0031] In some embodiments, the detection module 60 includes a monitoring end processing module 61 and a relay 62. The arc detection head 50 is connected to the monitoring end processing module 61 via a first wire 51, and the relay 62 is connected to the cleaning machine processing module 2 via a second wire 63. After receiving an electrical signal, the monitoring end processing module 61 processes the electrical signal to obtain a digital signal. The monitoring end processing module 61 presets a corresponding threshold based on whether the nozzle 9 of the gun head is stably spraying an arc. Based on the comparison between the digital signal and the threshold, the monitoring end processing module 61 outputs different control signals (outputting a first control signal within the threshold and outputting a second control signal outside the threshold). Under the action of different control signals, the relay 62 outputs a first output signal to the cleaning machine processing module 2, or disconnects from the cleaning machine processing module 2 or outputs a second output signal to the cleaning machine processing module 2.

[0032] It should be noted that multiple tests can be conducted beforehand regarding how to set the threshold: a stable arc is generated, including the upper and lower boundaries of the stable arc. The arc detection head 50 generates an electrical signal based on the detected arc and transmits it to the monitoring end processing module 61. The monitoring end processing module 61 processes the electrical signal to obtain a digital signal, including the digital signal corresponding to the upper and lower boundaries of the stable arc. This digital signal can then be set as the threshold. In subsequent detections, digital signals outside the threshold can be considered as digital signals obtained from abnormal states other than unstable arcs.

[0033] Specifically, the trigger terminal of relay 62 can be located in the setting circuit, and the common terminal of relay 62 can be connected to the cleaning machine processing module 2. When the monitoring terminal processing module 61 outputs the first control signal, it can close the setting circuit. At this time, the common terminal of relay 62 can be connected to the first terminal of relay 62, allowing relay 62 to output a first output signal to the cleaning machine processing module 2. When the monitoring terminal processing module 61 outputs the second control signal, it can open the setting circuit. At this time, the common terminal of relay 62 can be connected to the second terminal of relay 62, allowing relay 62 to output a second output signal to the cleaning machine processing module 2 or disconnect the communication connection with the cleaning machine processing module 2. The detection module 60 can be implemented using existing modules, which will not be described in detail here.

[0034] The arc detection head 50 can be a photoresistor sensor for arc detection. The resistance of a photoresistor sensor changes accordingly based on the intensity of the detected arc light; that is, its resistance is correlated with the light intensity. The detection module 60 can use an existing light-sensing switch module, which will not be further elaborated here.

[0035] In some embodiments, the fixing mechanism 30 includes a fixing block 31 and a retaining ring 32. The retaining ring 32 is connected to one side of the fixing block 31 and is sleeved and fixed on the gun head 1. Based on the combination of the retaining ring 32 and the gun head 1, the reliable installation of the plasma arc monitoring device 3 is achieved.

[0036] In some embodiments, the fixing mechanism 30 includes a fixing block 31 and a cover plate 34. The fixing block 31 forms an accommodating space 311. An opening 312 is formed on the side of the accommodating space 311 away from the gun head 1. The detection module 60 is disposed in the accommodating space 311, and the cover plate 34 covers the opening 312.

[0037] Specifically, the bottom wall of the fixing block 31 has a protrusion 313, and a first through hole 314 is formed on the protrusion 313; the light guide 40 is a light guide tube 40, which is fixedly installed on the side of the protrusion 313 near the gun head 1 by the connecting block 33. The connecting block 33 has a second through hole 331. One end of the light guide tube 40 away from the gun head nozzle 9 is fixedly connected to one side of the connecting block 33 at the second through hole 331, and the other side of the connecting block 33 is fixedly connected to the protrusion 313. The second through hole 331 and the first through hole 314 are connected to each other. The arc light detection head 50 includes a wire 51. The wire 51 passes through the second through hole 331 and the first through hole 314 and then passes into the accommodating space 311 to connect with the detection module 60.

[0038] More specifically, the protrusion 313 has a bottom wall of the fixing block 31 on the side close to the gun head 1; the fixing mechanism 30 also includes a clamping block 35, which is fixed to the bottom wall of the fixing block 31 and located on the side of the protrusion 313 away from the gun head 1; a wiring channel A is formed between the clamping block 35 and the fixing block 31, and a wire hole 341 is formed on the cover plate 34. The wire 51 passes through the second through hole 331, the first through hole 314, the wiring channel A and the wire hole 341 in sequence to enter the receiving space 311.

[0039] In some embodiments, the light guide 40 is a light guide tube 40, and the arc light detection head 50 is disposed at one end of the light guide tube 40 away from the nozzle 9. The inner wall of the light guide tube 40 is a mirror surface that can reflect arc light to reflect the arc light to the arc light detection head 50.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A plasma arc monitoring device for a plasma cleaner, characterized in that, include: The system comprises a fixing mechanism, a light guide, an arc detection head, and a detection module. The fixing mechanism is configured to connect to the body of a plasma cleaner. The light guide and the detection module are mounted on the fixing mechanism. The arc detection head is mounted on the light guide and is communicatively connected to the detection module. One end of the light guide is located on one side of the nozzle of the plasma cleaner and close to the nozzle. When the nozzle emits an arc, the arc detection head detects the arc under the action of the light guide and generates electrical signals of different magnitudes based on the different intensities of the arc, which are transmitted to the detection module. The detection module is configured to communicatively connect to the cleaning processing module of the plasma cleaner. When the nozzle emits a stable arc, the detection module generates a first output signal based on the electrical signal and outputs it to the cleaning processing module.

2. The plasma arc monitoring device as described in claim 1, characterized in that, One side of the fixing mechanism is configured to connect to the nozzle of the plasma cleaner.

3. The plasma torch condition monitoring apparatus of claim 2, wherein, The fixing mechanism includes a fixing block and a retaining ring. The retaining ring is connected to one side of the fixing block and is sleeved and fixed on the gun head.

4. The plasma torch condition monitoring apparatus of claim 2, wherein, The fixing mechanism includes a fixing block and a cover plate. The fixing block forms an accommodating space, and an opening is formed on the side of the accommodating space opposite to the gun head. The detection module is disposed in the accommodating space, and the cover plate covers the opening.

5. The plasma torch condition monitoring apparatus of claim 4, wherein, The bottom wall of the fixing block has a protrusion, and a first through hole is formed on the protrusion. The light guide is a light guide tube, which is fixedly installed on the side of the protrusion near the gun head by a connecting block. The connecting block has a second through hole, and one end of the light guide tube away from the gun head nozzle is fixedly connected to one side of the connecting block at the second through hole. The other side of the connecting block is fixedly connected to the protrusion. The second through hole and the first through hole are connected. The arc light detection head includes a wire, which passes through the second through hole and the first through hole and then enters the accommodating space to connect with the detection module.

6. The plasma torch condition monitoring apparatus of claim 5, wherein, The protrusion forms the bottom wall of the fixing block on the side close to the gun head; the fixing mechanism also includes a clamping block, which is fixed to the bottom wall of the fixing block and located on the side of the protrusion away from the gun head; a wiring channel is formed between the clamping block and the fixing block, and a wire-passing hole is formed on the cover plate, through which the wire sequentially passes through the second through hole, the first through hole, the wiring channel and the wire-passing hole into the accommodating space.

7. The plasma torch operating condition monitoring apparatus of claim 1 wherein, The light guide is a light tube, and the arc light detection head is located at the end of the light guide away from the nozzle of the gun head. The inner wall of the light guide is a mirror surface that can reflect arc light to reflect the arc light to the arc light detection head.

8. The plasma torch operating condition monitoring apparatus of claim 1 wherein, The arc detection head is a photoresistor sensor for arc detection.

9. The plasma arc monitoring device as described in claim 1, characterized in that, The detection module includes a monitoring end processing module and a relay. The arc detection head is connected to the monitoring end processing module via a first wire, and the relay is connected to the cleaning machine processing module via a second wire. After receiving the electrical signal, the monitoring end processing module processes the electrical signal to obtain a digital signal. The monitoring end processing module presets a corresponding threshold based on whether the nozzle of the gun head is stably arcing. Based on the comparison between the digital signal and the threshold, the monitoring end processing module outputs different control signals. Under the action of different control signals, the relay outputs the first output signal to the cleaning machine processing module, or disconnects from the cleaning machine processing module or outputs the second output signal to the cleaning machine processing module.

10. A plasma cleaning machine characterised in that, include: The plasma arc monitoring device, gun head, and cleaning machine processing module as described in any one of claims 1 to 9, wherein the fixing mechanism is connected to the gun head, and the equipment-side processing module is used to receive signals from the detection module.

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