CN215903330U - Dust extraction and aircraft paint removal dust-free polisher - Google Patents

Abstract

The utility model provides a dust suction device and an airplane paint removal dust-free polisher, wherein the airplane paint removal dust-free polisher comprises a handheld polishing machine, a dust suction hood and a dust collector; the polishing machine comprises a polishing head and a handheld part, and the outer cover of the dust hood is provided with the polishing head; the dust collection cover is provided with a dust outlet and a connecting part which can be detachably connected with the shell of the polishing head, and the handheld part of the polishing machine is positioned outside the dust collection cover; a dust storage area, a control circuit and a dust suction pump are arranged in the dust collector, and a dust inlet is formed in the dust collector; the dust outlet on the dust hood is connected with the dust inlet on the dust collector through a flexible pipe, and the power supply end of the polishing machine is electrically connected with the power supply output end of the control circuit. When dust collection is not needed or the operation space of the dust collection cover is not convenient enough, the dust collection cover can be disassembled, and the polishing machine is used independently; the weight increment is relatively less, and user experience influence is less, and the handheld portion of the machine of polishing is located the dust absorption cover outside still can be handheld, the operation of being convenient for.

Description

Dust extraction and aircraft paint removal dust-free polisher

Technical Field

The utility model relates to the technical field of paint removal, in particular to a dust suction device and an airplane paint removal dust-free polisher.

Background

At present, the existing paint removing process of an airplane is carried out in a special closed storehouse, and a plurality of high-power dust suction pumps are arranged in the storehouse for collecting waste paint and dust. However, the aircraft paint layer is thick, the paint spraying area is large, more dust is ground, a plurality of high-power dust suction pumps are arranged in the storeroom, the dust suction effect in a large space is still poor, the air quality in the paint removing storeroom is poor, and the damage to human bodies is large; in addition, dust is also easily introduced into the aircraft or other equipment and equipment, causing damage to the equipment and equipment.

In the process of aircraft paint removal, a polisher is usually set to be handheld for operation, and the self weight of a handheld device is inversely related to user experience, that is, the larger the weight is, the worse the user experience is, so how to integrate a dust suction function on the existing polisher for aircraft paint removal without increasing the weight or slightly increasing the weight is a problem to be solved. In addition, in the existing products, the dust suction device and the grinding machine are generally fixed together in an integrated mode, so that the grinding head portion is large in size and inflexible to use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide a dust suction device and an airplane paint removal dust-free polisher.

In order to achieve the above object of the present invention, according to a first aspect of the present invention, there is provided a dust suction apparatus comprising a dust collector and a dust suction hood mountable outside a polishing head of a polishing machine; the dust hood is detachably connected with the shell of the polishing head, and a dust outlet of the dust hood and a connecting part which can be detachably connected with the shell of the polishing head are arranged on the dust hood; a dust storage area and a dust suction pump are arranged in the dust collector, and a dust inlet is formed in the dust collector; the dust collection device is characterized in that a dust outlet of the dust collection cover is connected with a dust inlet on the dust collector through a flexible pipe, the dust inlet on the dust collector is communicated with an inlet of a dust collection pump, and an outlet of the dust collection pump is communicated with the dust storage area.

The technical scheme is as follows: this dust extraction can use with the cooperation of any machine of polishing, only need establish the dust cage cover in the machine of polishing's the head of polishing outside, just can collect the dust that the head during operation of polishing produced, improve the operational environment air quality of machine of polishing, can dismantle with the head of polishing shell through the dust cage simultaneously and be connected, can use in a flexible way, can take off the dust cage when space size restriction or environmental requirement are not high, can load dust cage and this dust extraction when air quality requires highly.

In order to achieve the above object, according to a second aspect of the present invention, there is provided an aircraft paint-stripping dust-free sander comprising a handheld sanding machine, a dust hood, and a dust collector; the polishing machine comprises a polishing head and a handheld part, and the dust hood is sleeved outside the polishing head; the dust hood is provided with a dust outlet of the dust hood and a connecting part which can be detachably connected with the shell of the polishing head, and the handheld part of the polishing machine is positioned outside the dust hood; a dust storage area, a control circuit and a dust pump are arranged in the dust collector, and a dust inlet is formed in the dust collector; the dust outlet of the dust hood is connected with the dust inlet on the dust collector through a flexible pipe, the dust inlet on the dust collector is communicated with the inlet of a dust suction pump, and the outlet of the dust suction pump is communicated with the dust storage area; and the power supply end of the polishing machine is electrically connected with the power supply output end of the control circuit.

The technical scheme is as follows: and pumping the dust ground by the grinding machine into the dust collector through a dust suction pump in the dust collector. The dust hood is detachably connected with the shell at the polishing head of the polishing machine, so that when dust does not need to be sucked or the operation space of the dust hood is not convenient, the dust hood can be disassembled, and the polishing machine can be used independently; the weight of dust hood and partial flexible pipe has only been increased on original machine of polishing, and the flexible pipe weight is lighter, and weight increment is less relatively, and user experience influences lessly, and the handheld portion of the machine of polishing is located the dust hood outside and still can be handheld, the operation of being convenient for.

In a preferred embodiment of the utility model, the length of the flexible tube is telescopically variable.

The technical scheme is as follows: the grinding machine and the dust collector can work remotely.

In a preferred embodiment of the utility model, the dust collector is provided with a normally closed discharge opening communicating with the dust storage area.

The technical scheme is as follows: the collected dust is convenient to discharge.

In a preferred embodiment of the utility model, the dust collector is movable.

The technical scheme is as follows: the use convenience of the sander can be increased.

In a preferred embodiment of the present invention, a first sensor for monitoring whether the dust storage area is full of dust is disposed in the dust storage area, the control circuit includes a control module and a switch module, the switch module is used for controlling the dust suction pump and the polishing machine to be powered on or powered off, an output end of the first sensor is connected to an input end of the control module, and a control output end of the control module is connected to a control end of the switch module.

The technical scheme is as follows: when the dust in the dust collector is about to be full, the dust collector can be timely known through the first sensor, and the grinding machine and the dust collection pump are cut off to force an operator to stop grinding for dust discharging treatment, so that the problem that the dust of the dust collector leaks due to delayed dust discharging of the operator can be effectively avoided.

In a preferred embodiment of the present invention, the switch module includes a first switch unit and a second switch unit, the first switch unit is used for controlling the dust suction pump to be powered on or powered off, the second switch unit is used for controlling the grinding machine to be powered on or powered off, the output end of the first sensor is connected with the input end of the control module, and the control output end of the control module is respectively connected with the control end of the first switch unit and the control end of the second switch unit.

In a preferred embodiment of the present invention, the first sensor includes at least one opposite-type photovoltaic module disposed in a dust storage area full area, the opposite-type photovoltaic module includes a light emitting unit and a light receiving unit oppositely mounted on an inner wall of the dust storage area, and an output end of the light receiving unit of the opposite-type photovoltaic module is connected to an input end of the control module.

The technical scheme is as follows: when the dust is about to be full, the light receiving unit can not receive the light signal sent by the light emitting unit any more, and then the control module is triggered to control the dust collection pump to be powered off.

In a preferred embodiment of the present invention, the opposed photovoltaic module is disposed near the top of the dust storage area.

The technical scheme is as follows: and the subsequent power supply cut-off is triggered when the dust is about to be full.

In a preferred embodiment of the present invention, the mobile terminal further includes an alert module, and a control end of the alert module is connected to a control output end of the control module.

The technical scheme is as follows: when the power supply of the dust suction pump and the power supply of the polishing machine are cut off, the alarm is given to prompt an operator.

In a preferred embodiment of the present invention, the control circuit further includes a three-phase power input port, an ac-to-dc module, and a dc voltage reduction module, the three-phase power input port is respectively connected to a power supply terminal of the polishing machine, a power supply terminal of the dust suction pump, and an input terminal of the ac-to-dc module, an output terminal of the ac-to-dc module is connected to an input terminal of the dc voltage reduction module, and an output terminal of the dc voltage reduction module is connected to a power supply terminal of the control module.

The technical scheme is as follows: and a stable direct current power supply is provided for the control module.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a dust-free sander for paint removal of an aircraft in a preferred embodiment of the utility model;

FIG. 2 is a schematic top view of the internal structure of a dust collector in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of a control circuit in a preferred embodiment of the present invention;

FIG. 4 is a diagram of a hardware configuration of a control module in a preferred embodiment of the present invention;

FIG. 5 is a schematic view of a preferred embodiment of the present invention in which the suction hood includes two sub-units;

FIG. 6 is a schematic view of the suction hood of FIG. 5 after attachment to a sanding machine.

Reference numerals:

1, grinding machine; 11, polishing head; 12 a hand-held portion; 2, a dust hood; 21 through holes, 22 subunits; 221 subunit snap interfaces; 23 dust outlet of the dust hood; 24 a connecting part; 3, a flexible pipe; 4, a dust collector; 41 a dust suction pump; 42 a dust storage area; 43 a control circuit; 44 an alert module; 45 a first sensor; 46 a moving mechanism; 47 a release port; 5, a cable; 6 three-phase power supply access port.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The utility model provides a dust suction device, which comprises a dust collector 4 and a dust suction hood, wherein the dust suction hood can be sleeved outside a polishing head 11 of a polishing machine 1; the dust hood 2 is detachably connected with the shell of the polishing head 11, and the dust hood 2 is provided with a dust outlet 23 of the dust hood and a connecting part 24 which can be detachably connected with the shell of the polishing head 11; a dust storage area 42 and a dust suction pump 41 are arranged in the dust collector 4, and a dust inlet is arranged on the dust collector 4; the dust outlet 23 of the dust hood is connected with the dust inlet on the dust collector 4 through the flexible pipe 3, the dust inlet on the dust collector 4 is communicated with the inlet of the dust suction pump 41, and the outlet of the dust suction pump 41 is communicated with the dust storage area 42.

In the present embodiment, the dust hood 2 may be an integral structure or a combination of a plurality of sub-units 22. For example, the dust hood 2 may include two sub-units 22, the two sub-units 22 are provided with a connecting portion 24, the connecting portion 24 of the two sub-units 22 is clamped around the housing of the polishing head 11, the other end of the folded sub-units is surrounded outside the polishing tool of the polishing head 11, the sub-units 22 can be folded by means of snap fit, and the like, for example, the sub-unit snap interface 221 shown in fig. 5 realizes detachable connection of the dust hood 2 and the housing of the polishing head 11, and fig. 6 is a schematic diagram of the dust hood 2 connected with the polishing machine 1. When the dust hood 2 is of an integral structure, the dust hood 2 is provided with an elastic opening as a connecting part 24, the size of the elastic opening is smaller than that of the shell of the polishing head 11, the polishing head 11 is pressed into the elastic opening to realize the detachable connection of the dust hood 2 and the shell of the polishing head 11, and the elastic opening is preferably, but not limited to, made of rubber or plastic. When the dust hood 2 is of an integrated structure, a gap is arranged on the dust hood 2, the gap is used as a connecting part 24 of the dust hood 2 and is matched with the shape and size of a shell at the joint of the polishing head 11, a through hole 21 is arranged on the connecting part 24, a screw hole matched with the through hole 21 is arranged at the position where the shell of the polishing head 11 is connected with the connecting part 24, and the connecting part 24 of the dust hood 2 is detachably connected with the polishing head 11 through screws and bolts.

In the present embodiment, the sanding machine 1 is preferably, but not limited to, a hand-held sander or a non-hand-held sanding machine, and if the sanding machine 1 is a hand-held type, it is preferable that the hand-held portion 12 of the sanding machine 1 is located outside the dust hood 2 for implementation.

In this embodiment, a control circuit 43 is further disposed in the dust collector 4, the dust storage region 42 is preferably but not limited to a box structure, a first sensor 45 for monitoring whether the dust storage region 42 is full of dust is disposed in the dust storage region 42, the control circuit 43 includes a control module and a switch module, the switch module is used for controlling the dust suction pump 41 to be powered on or powered off, an output end of the first sensor 45 is connected with an input end of the control module, and a control output end of the control module is connected with a control end of the switch module.

The utility model also provides a dust-free polisher for aircraft paint removal, which in a preferred embodiment, as shown in fig. 1, comprises a handheld polishing machine 1, a dust hood 2 and a dust collector 4, wherein the polishing machine 1 comprises a polishing head 11 and a handheld part 12, and the dust hood 2 is sleeved outside the polishing head 11; the dust hood 2 is provided with a dust hood dust outlet 23 and a connecting portion 24 which can be detachably connected with the housing of the sanding head 11, and the hand-held portion 12 of the sanding machine 1 is located outside the dust hood 2. As shown in fig. 2, a dust storage area 42, a control circuit 43 and a dust suction pump 41 are provided in the dust collector 4, and a dust inlet is provided in the dust collector 4; the dust outlet 23 of the dust hood is connected with the dust inlet on the dust collector 4 through the flexible pipe 3, the dust inlet on the dust collector 4 is communicated with the inlet of the dust suction pump 41, and the outlet of the dust suction pump 41 is communicated with the dust storage area 42. The dust storage area 42 is preferably, but not limited to, a box structure, and preferably, a connection point of the outlet of the dust suction pump 41 and the dust storage area 42 is located at the top of the box structure. It is further preferred that the dust collector 4 is provided with a normally closed release opening 47 communicating with the dust storage area 42, the release opening 47 comprising an external connection and a cover matching the external connection, the cover being closed when not discharging dust and open when discharging dust, the release opening 47 being located at the bottom of the case structure for dust discharge. The power supply of the grinding machine 1 is electrically connected to the power output of the control circuit 43, preferably by means of an electrically conductive cable 5 connecting the power supply of the grinding machine 1 to the power output of the control circuit 43.

In this embodiment, preferably, the shape and size of the housing at the connection portion 24 of the dust hood 2 and the polishing head 11 are matched, and the connection portion 24 of the dust hood 2 and the housing of the polishing head 11 are preferably, but not limited to, connected in a manner of ferrule type, snap type, binding type, or threaded connection, and the like, and the specific connection manner may be an existing detachable connection manner, which is not described herein again. The flexible tube 3, which is preferably, but not limited to, a plastic or rubber tube, can be provided in a long length so that the sander can work at a long distance from the dust collector 4. The dust storage area 42 is preferably, but not limited to, a box structure.

In this embodiment, preferably, as shown in fig. 3, the control circuit 43 includes a three-phase power inlet 6, an ac-to-dc module and a dc voltage reduction module, the three-phase power inlet 6 is respectively connected to the power supply terminal of the polishing machine 1, the power supply terminal of the dust suction pump 41 and the input terminal of the ac-to-dc module, the output terminal of the ac-to-dc module is connected to the input terminal of the dc voltage reduction module, and the output terminal of the dc voltage reduction module is connected to the power supply terminal of the control module.

In this embodiment, the control module is preferably, but not limited to, a microprocessor such as a 51-chip microcomputer or an ARM. As shown in fig. 3, the ac-dc conversion module includes a step-down transformer T1 and a three-phase diode full-bridge rectifier circuit, the step-down transformer T1 steps down the three-phase power, and the three-phase diode full-bridge rectifier circuit rectifies and synthesizes the stepped-down three-phase power into one path of dc output. The input end of the step-down transformer T1 is connected with the three-phase power supply access port 6, the output end of the step-down transformer T1 is connected with the input end of the three-phase diode full-bridge rectification circuit, and the output end of the three-phase diode full-bridge rectification circuit is connected with the input end of the direct-current step-down module. Because the output voltage of the output end of the three-phase diode full-bridge rectification circuit is higher and cannot be used by follow-up modules such as a control module, the direct-current voltage reduction module is arranged to reduce the output voltage of the three-phase diode full-bridge rectification circuit. The dc voltage reduction module is preferably but not limited to an existing DCDC chip or LDO chip, and the specific circuit can refer to a selected chip manual, which is not described herein again.

In the present preferred embodiment, the length of the flexible tube 3 can be changed telescopically, and preferably, the flexible tube 3 is a plastic corrugated tube.

In a preferred embodiment, the dust collector 4 is movable, and preferably, a moving mechanism 46 is provided at the bottom of the dust collector 4, and the moving mechanism 46 is preferably, but not limited to, a universal wheel mechanism.

In a preferred embodiment, a first sensor 45 for monitoring whether the dust storage area 42 is full of dust is arranged in the dust storage area 42, the control circuit 43 comprises a control module and a switch module, the switch module is used for controlling the dust suction pump 41 and the grinding machine 1 to be powered on or powered off, the output end of the first sensor 45 is connected with the input end of the control module, and the control output end of the control module is connected with the control end of the switch module. In the present embodiment, the first sensor 45 is preferably, but not limited to, a load cell or a correlation radiation sensor. The load cell is disposed at the bottom of the dust storage area 42, and whether the dust storage area 42 is full or not is determined by the weight output from the load cell. Correlation formula radiation sensor is including setting up in the transmitting terminal at dust storage area 42 top and setting up in the receiving terminal of dust storage area 42 bottom, and transmitting terminal and receiving terminal set up oppositely, and along with the dust memory space is more, the loss when the wireless signal that the transmitting terminal sent reachs the receiving terminal is big more, and the signal strength that the receiving terminal received is weaker more, consequently, can learn the dust memory space through the intensity size of the signal that the receiving terminal received, can carry out according to the principle and fill up the detection.

In the present embodiment, it is preferable that the first sensor 45 includes at least one opposite type photovoltaic module disposed in the full storage area of the dust storage area 42, as shown in fig. 2, the opposite type photovoltaic module includes a light emitting unit and a light receiving unit oppositely mounted on the inner wall of the dust storage area 42, and an output end of the light receiving unit of the opposite type photovoltaic module is connected to an input end of the control module. Preferably, as shown in fig. 2, the connection between the outlet of the dust suction pump 41 and the dust storage area 42 is located on one side of the dust storage area 42, and the opposite emission type photovoltaic module is located on the other side of the dust storage area 42. It is further preferred that the opposed photovoltaic module is disposed near the top of the dust storage area 42. The correlation type photoelectric module is arranged at a preset full limit position.

In this embodiment, preferably, in order to reduce the cost and implement hardware control, the control module may adopt a hardware circuit structure as shown in fig. 4, and specifically includes: reference supply and comparator a 1. The output end of the reference power supply is connected with the negative input end of the comparator A1, the output end of the light receiving unit is connected with the positive input end of the comparator A1, and the output end of the comparator A1 is connected with the control end of the switch module. The output of comparator a1 serves as the control output of the control module. The output voltage range of the reference power supply is 0 to MV, M is preferably but not limited to 0.05 to 0.5, the reference power supply is preferably but not limited to obtain the reference voltage by dividing the voltage of the output end of the dc voltage reduction module by using a resistance voltage division circuit, the reference power supply can use the existing resistance voltage division circuit, and details are not repeated herein. When the dust level in the dust storage area 42 reaches the position of the light receiving unit, the light receiving unit cannot continue to receive the light signal sent by the light emitting unit due to the blocking of the dust, the level of the output signal of the light receiving unit is reduced, and when the level is reduced to be less than the voltage output by the reference power supply, the output signal of the comparator A1 is changed from high level to low level so as to control the switch module to be switched off, so that the dust collection pump and the dust collection machine are powered off.

In the present embodiment, the switch module is preferably, but not limited to, an existing ac relay module, the switching contact switch of the ac relay is connected in series in the power supply circuit of the dust suction pump 41 and the polishing machine 1, that is, in the connection path between the power supply terminals of the dust suction pump 41 and the polishing machine 1 and the three-phase power inlet 6, as shown in fig. 4, the energization or the deenergization of the coil of the ac relay is controlled by the control module, for the convenience of circuit matching and more effective control, a relay driving module is further disposed in the control circuit 43, the relay driving module is a switch circuit composed of a triode and a MOS switch tube, and the specific circuit is shown as the relay driving module in fig. 3.

In this embodiment, for independent control, preferably, as shown in fig. 3, the switch module includes a first switch unit and a second switch unit, the first switch unit is used for controlling the dust suction pump 41 to be powered on or powered off, the second switch unit is used for controlling the grinding machine 1 to be powered on or powered off, the output end of the first sensor 45 is connected with the input end of the control module, and the control output end of the control module is respectively connected with the control end of the first switch unit and the control end of the second switch unit. The first switch unit and the second switch unit are both existing ac relays, such as relays J1 and J2 shown in fig. 3, and relay driving modules are respectively arranged in the control circuit for the first switch unit and the second switch unit, as shown in fig. 3.

In a preferred embodiment, as shown in fig. 2, the system further comprises an alarm module 44, and a control terminal of the alarm module 44 is connected to a control output terminal of the control module. Preferably, the warning module 44 includes a warning lamp and a buzzer, and a driving circuit of the warning lamp and the buzzer, i.e. an audible and visual alarm unit in fig. 3, is disposed in the control circuit 43.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A dust suction device is characterized by comprising a dust collector and a dust suction hood which can be sleeved outside a polishing head of a polishing machine;

the dust hood is detachably connected with the shell of the polishing head, and a dust outlet of the dust hood and a connecting part which can be detachably connected with the shell of the polishing head are arranged on the dust hood;

a dust storage area and a dust suction pump are arranged in the dust collector, and a dust inlet is formed in the dust collector; the dust collection device is characterized in that a dust outlet of the dust collection cover is connected with a dust inlet on the dust collector through a flexible pipe, the dust inlet on the dust collector is communicated with an inlet of a dust collection pump, and an outlet of the dust collection pump is communicated with the dust storage area.

2. An aircraft paint removal dust-free polisher is characterized by comprising a handheld polishing machine, a dust hood and a dust collector;

the polishing machine comprises a polishing head and a handheld part, and a dust hood is sleeved outside the polishing head;

the dust hood is provided with a dust outlet of the dust hood and a connecting part which can be detachably connected with the shell of the polishing head, and the handheld part of the polishing machine is positioned outside the dust hood;

a dust storage area, a control circuit and a dust suction pump are arranged in the dust collector, and a dust inlet is formed in the dust collector; the dust outlet of the dust hood is connected with the dust inlet on the dust collector through a flexible pipe, the dust inlet on the dust collector is communicated with the inlet of a dust suction pump, and the outlet of the dust suction pump is communicated with the dust storage area; and the power supply end of the polishing machine is electrically connected with the power supply output end of the control circuit.

3. An aircraft paint removal dust-free sander as set forth in claim 2, wherein the length of the flexible tube is telescopically variable.

4. An aircraft paint removal dust free sander as set forth in claim 2, wherein said dust collector is provided with a normally closed discharge opening communicating with a dust storage area.

5. An aircraft paint removal dust-free sander as set forth in claim 2, wherein said dust collector is movable.

6. An aircraft paint-removal dust-free grinding machine as claimed in any one of claims 2 to 5, wherein a first sensor is arranged in the dust storage area for monitoring whether the dust storage area is full of dust, the control circuit comprises a control module and a switch module, the switch module is used for controlling the dust suction pump and the grinding machine to be powered on or off, the output end of the first sensor is connected with the input end of the control module, and the control output end of the control module is connected with the control end of the switch module.

7. An aircraft paint-removal dust-free sander as set forth in claim 6, wherein the first sensor comprises at least one opposed photovoltaic module disposed in a dust storage area full area, the opposed photovoltaic module comprises a light emitting unit and a light receiving unit oppositely mounted on an inner wall of the dust storage area, and an output end of the light receiving unit of the opposed photovoltaic module is connected with an input end of the control module.

8. An aircraft paint removal dust-free sander as set forth in claim 7, wherein said opposed photovoltaic module is disposed proximate to the top of said dust storage area.

9. The aircraft paint-stripping dust-free sander as set forth in claim 6, further comprising an alarm module, wherein a control end of the alarm module is connected to a control output end of the control module.

10. An aircraft paint-removal dust-free polisher according to claim 6 with the control circuit further comprising a three-phase power inlet, an ac-to-dc module and a dc-to-dc voltage-reduction module, the three-phase power inlet being connected to the power supply of the polishing machine, the power supply of the dust suction pump and the input of the ac-to-dc module respectively, the output of the ac-to-dc module being connected to the input of the dc-to-dc voltage-reduction module, the output of the dc-to-dc voltage-reduction module being connected to the power supply of the control module.

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