Carbon powder collecting device and carbon powder collecting method for collector ring chamber of fan

Abstract

The present invention relates to the technical field of dust removal for fan components, and discloses a carbon dust collection device and method for a fan collector ring chamber, comprising a carbon dust scooping plate for scooping up carbon dust adsorbed on the collector ring surface; a carbon dust collection channel, with the carbon dust scooping plate disposed at one end of the channel, and a first elastic component disposed between the carbon dust scooping plate and the channel for maintaining elastic contact between the carbon dust scooping plate and the collector ring surface; an adsorption power assembly connected to the channel for providing adsorption force to adsorb and collect carbon dust in the channel; and a valve assembly, with a traction assembly disposed between the piston and the carbon dust scooping plate for pulling the carbon dust scooping plate away from the collector ring surface when the piston moves. When the adsorption power assembly stops providing adsorption force, the carbon dust scooping plate can be driven by the first elastic component to return to a position of elastic contact with the collector ring. The present invention can effectively clean carbon dust on the collector ring and reduce the probability of surface ignition.

Description

Technical Field

[0001] The present invention relates to the technical field of fan components, and in particular to a carbon powder collecting device and a carbon powder collecting method for a collector ring chamber of a fan. Background Art

[0002] The collector ring chamber is an important component of the wind turbine. Long-term operation of the wind turbine will result in a large amount of carbon powder in the collector ring chamber, which cannot be discharged by itself. Most of the carbon powder sticks to the surface of the collector ring porcelain bottle and cannot be removed smoothly. Over time, it will cause the collector ring surface to ignite, which not only affects the insulation, but also easily causes the cabin to catch fire.

[0003] In the prior art, to address the above-mentioned problem, a fan is usually connected to the outside of the slip ring chamber to absorb and collect the carbon powder in the slip ring chamber by exhausting air. While this method is very effective in collecting carbon powder in the slip ring chamber, it is still difficult to clean the carbon powder adhering to the slip ring surface. Summary of the Invention

[0004] Aiming at the problem of difficulty in cleaning carbon powder attached to the surface of the collector ring in the prior art, the present invention provides a carbon powder collection device and a carbon powder collection method for the collector ring chamber of a fan, which effectively removes carbon powder attached to the collector ring part and reduces the probability of safety accidents.

[0005] The present invention is achieved through the following technical solutions:

[0006] A carbon powder collecting device for a fan collector ring chamber, used for collecting carbon powder adsorbed on the collector ring surface, comprising:

[0007] A carbon powder scraping plate, one end of which contacts the surface of the collector ring and is used to scrape up the carbon powder adsorbed on the surface of the collector ring;

[0008] A carbon powder collecting channel, wherein the carbon powder collecting plate is arranged at one end of the carbon powder collecting channel, and a first elastic component is provided between the carbon powder collecting plate and the carbon powder collecting channel for maintaining elastic contact between the carbon powder collecting plate and the surface of the collector ring;

[0009] an adsorption power component connected to the carbon powder collecting channel, and configured to provide adsorption force to adsorb and collect carbon powder in the carbon powder collecting channel;

[0010] The valve assembly includes a valve seat and a piston. The valve seat is arranged in the carbon powder collection channel. A medium channel is provided on the valve seat. The piston can be slidably arranged relative to the valve seat between blocking the medium channel and opening the medium channel. The adsorption power assembly can provide adsorption force to adsorb the piston to open the medium channel. A traction assembly is provided between the piston and the carbon powder scissor plate, which is used to pull the carbon powder scissor plate away from the surface of the collector ring when the piston moves. When the adsorption power assembly stops providing adsorption force, the carbon powder scissor plate can be driven by the first elastic component to return to a position of elastic contact with the collector ring.

[0011] Optionally, the traction assembly includes a strip-shaped component made of insulating material, one end of the strip-shaped component is fixedly connected to the piston, and the other end and the carbon powder copy plate adopt a mutually nested sliding fit structure, and a second elastic component is provided in the sliding fit structure to keep the connection end of the carbon powder copy plate and the connection end of the strip-shaped component separated from each other.

[0012] Optionally, the strip-shaped component is provided with a plurality of through portions penetrating in the thickness direction at one end fixedly connected to the piston.

[0013] Optionally, the traction assembly includes a belt-like component made of insulating material, one end of the belt-like component is fixedly connected to the piston, and the other end is connected to the carbon powder copying plate by a pull rope component, and the pull rope component is wound around the rotating shaft of the carbon powder copying plate. When the belt-like component is pulled by the piston, the carbon powder copying plate can be driven to rotate through the pull rope component to break away from contact with the collector ring.

[0014] Optionally, the belt-shaped component can be pulled by the piston to separate the belt-shaped component from the carbon powder copying plate to form a leakage gap, and the carbon powder copying plate rotates to form an angle β with the end of the carbon powder collecting channel, β≤20°.

[0015] Optionally, a plurality of carbon powder collecting channels are provided, and are arranged around the outer circumference of the collector ring;

[0016] The distance between the carbon powder collecting channel and the collector ring gradually increases from the connecting end of the carbon powder collecting plate to the other end.

[0017] Optionally, the adsorption power assembly includes a centrifugal fan and a filter component, and the filter component is arranged at the front end of the centrifugal fan to filter and collect carbon powder.

[0018] Optionally, it further includes a processor and a timer, wherein the processor is electrically connected to the timer and the adsorption power component respectively, and is used to turn on and off the adsorption power component at intervals.

[0019] A method for collecting carbon powder based on the carbon powder collecting device of the fan collector ring chamber described above comprises the following steps:

[0020] The processor turns on and off the adsorption power component according to the time interval set by the timer;

[0021] When the adsorption power component is turned on, it provides adsorption force to the carbon powder collection channel. Under the action of the adsorption force, the piston separates from the valve seat, thereby opening the medium channel, so that the carbon powder in the entire carbon powder collection channel is adsorbed and collected;

[0022] When the piston moves away from the valve seat, the piston drives the carbon powder copy plate through the traction assembly, so that the carbon powder copy plate is separated from the surface of the collector ring, and the carbon powder on the carbon powder copy plate is adsorbed and collected;

[0023] When the adsorption power component is turned off, the adsorption force in the carbon powder collection channel disappears, and the carbon powder copying plate is reset under the action of the first elastic component, maintaining contact with the surface of the collector ring and continuing to pick up the carbon powder on the surface of the collector ring; during the reset of the carbon powder copying plate, the piston is driven to reset by the traction component to close the medium channel.

[0024] Optionally, when the traction assembly drives the toner copy board to move, the belt-shaped component of the traction assembly can be separated from the toner copy board, thereby separating the toner on the toner copy board from the toner on the belt-shaped component.

[0025] The technical solution of the present invention has at least the following beneficial effects:

[0026] The carbon powder collecting device and carbon powder collecting method of the fan collector ring chamber of the present invention can pick up the carbon powder attached to the collector ring surface by providing a carbon powder picking plate, and the carbon powder is accumulated on the carbon powder picking plate. At the same time, an adsorption power component and a valve component are provided. When the adsorption power component is adsorbing, the valve action can be controlled to separate the carbon powder picking plate from the collector ring, so that the charged adsorption capacity of the carbon powder picking plate is weakened, thereby adsorbing and collecting the carbon powder; when the adsorption power component is shut down, the valve is closed, the carbon powder collection channel is blocked, and the carbon powder accumulates in the carbon powder collection channel, which is convenient for the next adsorption and collection, and can also block the external airflow, preventing the external airflow from impacting the carbon powder in the carbon powder collection channel and returning to the collector ring again, causing secondary attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the carbon powder collecting device of the fan collector ring chamber of the present invention;

[0028] Figure 2 A partial cross-sectional side view of a carbon powder collecting device according to embodiment 1 of the present invention;

[0029] Figure 3 This is a schematic structural diagram of a strip-shaped component according to Example 1 of the present invention;

[0030] Figure 4 for Figure 2 A magnified view of part a;

[0031] Figure 5 for Figure 4 Another state diagram of the structure shown;

[0032] Figure 6 for Figure 4 One of the usage state diagrams of the structure shown;

[0033] Figure 7 for Figure 4 Another use state diagram of the structure shown;

[0034] Figure 8 This is a principle block diagram of the circuit portion of Example 1 of the present invention;

[0035] Figure 9 This is a schematic structural diagram of a strip-shaped component according to embodiment 2 of the present invention;

[0036] Figure 10 This is a partial structural diagram of a carbon powder collecting device according to Example 2 of the present invention;

[0037] Figure 11 for Figure 10 Another state diagram of the structure shown.

[0038] Reference numerals:

[0039] 100 - Carbon powder collecting device, 110 - Carbon powder scraping plate, 120 - Carbon powder collecting channel, 130 - Traction assembly, 131 - Protrusion, 132 - Through-hole, 133 - Second elastic component, 134 - Pull rope component, 140 - Adsorption power component, 150 - Valve assembly, 151 - Valve seat, 152 - Piston;

[0040] 200-slip ring assembly, 210-slip ring;

[0041] 310 - processor, 320 - timer. DETAILED DESCRIPTION

[0042] Example 1

[0043] Reference Figures 1-8The carbon powder collecting device 100 of the fan collector ring chamber of this embodiment is mainly arranged with a collector ring assembly 200 such as a carbon brush and a collector ring 210, also known as an electric slip ring. The carbon powder collecting device 100 of this embodiment is used to collect carbon powder adsorbed on the surface of the collector ring 210. The adhesion of carbon powder on the surface of the collector ring 210 is mainly due to the adsorption force generated by the charge of the collector ring 210, which causes part of the carbon powder to be adsorbed on the collector ring 210. When a conventional suction device or a blowing device ventilates the entire collector ring chamber to remove the carbon powder, it can only take away the carbon powder in the collector ring chamber, while the carbon powder adsorbed on the collector ring 210 is difficult to remove, which causes the collector ring 210 to ignite over time.

[0044] Reference Figure 1 , Figure 2 , Figure 4 To solve the above technical problems, the carbon powder collection device 100 for the fan slip ring chamber of this embodiment includes a carbon powder scooping plate 110, a carbon powder collection channel 120, an adsorption power assembly 140, and a valve assembly 150. One end of the carbon powder scooping plate 110 contacts the surface of the slip ring 210 and is used to scoop up carbon powder adsorbed on the surface of the slip ring 210. Since carbon powder is a very small particle, to ensure that the carbon powder scooping plate 110 can smoothly scoop up carbon powder, the carbon powder scooping plate 110 is made of metal material. A grinding device is used at the end of the carbon powder scooping plate 110 that contacts the surface of the slip ring 210 to grind it into a thin blade structure. The width of the carbon powder scooping plate 110 is close to the width of the slip ring 210. The other end of the carbon powder lifting plate 110 is arranged at one end of the carbon powder collecting channel 120 and is installed through the rotating shaft on the carbon powder collecting channel 120. At the same time, a first elastic component is provided between the carbon powder lifting plate 110 and the carbon powder collecting channel 120. In this embodiment, the first elastic component is preferably a torsion spring (not shown in the figure). One end of the torsion spring is clamped on the carbon powder collecting channel 120, and the other end is clamped on the carbon powder lifting plate 110, providing elastic force to keep the carbon powder lifting plate 110 in elastic contact with the surface of the slip ring 210, thereby lifting the carbon powder on the surface of the slip ring 210. On the one hand, the lifted carbon powder is also charged because the carbon powder lifting plate 110 is in contact with the slip ring 210. On the other hand, the carbon powder accumulates and the contact distance is short, so the carbon powder itself still has adsorption force and is difficult to be blown away by conventional suction devices or blowing devices. It will only accumulate on the carbon powder lifting plate 110. When it accumulates to a certain amount, the newly picked up carbon powder will gradually squeeze the later picked up carbon powder backwards.

[0045] Several carbon powder collection channels 120 are provided, configured according to the number of slip rings 210 and arranged around the outer circumference of the slip rings 210. This allows the carbon powder collection channels 120 to be integrated without changing the slip ring housing, effectively saving space. The carbon powder collection channels 120 are preferably square tube-shaped, with each corresponding to a slip ring 210. The carbon powder collection channels 120 are preferably arranged around the lower semicircle of the slip rings 210, so that their openings face the slip rings 210. Since the carbon powder scooping plate 110 is arranged at the opening of the carbon powder collection channel 120, it can also collect a small amount of carbon powder during the scooping process.

[0046] The distance between the carbon powder collecting channel 120 and the slip ring 210 gradually increases from the connection end of the carbon powder collecting plate 110 to the other end. That is, after the carbon powder is picked up, the distance between the carbon powder and the slip ring 210 becomes farther and farther, thereby weakening the adsorption force of the electromagnetic field of the slip ring 210 on the carbon powder, so that it is easier to be sucked away by the wind.

[0047] The other end of the carbon powder collection channel 120 is also connected to a collection box that connects all carbon powder collection channels 120. The collection box is connected to the adsorption power component 140 through a pipeline. In this embodiment, the adsorption power component 140 is connected to the carbon powder collection channel 120 to provide adsorption force to adsorb and collect the carbon powder in the carbon powder collection channel 120. The collection box can achieve simultaneous adsorption of multiple carbon powder adsorption channels. The adsorption power component 140 in this embodiment includes a centrifugal fan and a filter component (not shown). The filter component is arranged at the front end of the centrifugal fan, that is, between the collection box and the centrifugal fan, and is used to filter and collect carbon powder. The filter component can use a filter cloth that can filter carbon powder. The operation and maintenance personnel regularly clean the filter cloth to keep the entire adsorption channel smooth.

[0048] Reference Figure 2The valve assembly 150 is arranged in the carbon powder collecting channel 120. Specifically, the valve assembly 150 includes a valve seat 151 and a piston 152. The valve seat 151 is arranged in the carbon powder collecting channel 120. A medium channel is provided on the valve seat 151. The piston 152 can be slidably arranged relative to the valve seat 151 between blocking the medium channel and opening the medium channel. In this embodiment, in order to facilitate the installation of the invention component, the carbon powder collecting channel 120 is set to a two-section structure, which is connected in the middle by a flange, and the valve seat 151 is arranged at the connecting end. The valve seat 151 is fixed to the connecting part in the middle of the carbon powder collecting channel 120 by step matching. The piston 152 is limited to one end of the valve seat 151 by the guide rod on the valve seat 151. The piston 152 is installed on the guide rod through a sleeve structure and can slide on the guide rod. When it slides to the bottom end of the guide rod, it is sealed with the valve seat 151, closing the medium channel, thereby closing the entire carbon powder collection channel 120; and when the piston 152 slides toward the top end of the guide rod, the medium channel is opened, and the entire carbon powder collection channel 120 is opened.

[0049] A traction assembly 130 is disposed between the piston 152 and the carbon powder scoop plate 110. This assembly is used to pull the carbon powder scoop plate 110 away from the surface of the slip ring 210 as the piston 152 slides toward the top of the guide rod. The suction force of the suction power assembly 140 causes the piston 152 to move, opening the carbon powder collection channel 120 and thereby adsorbing the carbon powder in the carbon powder collection channel 120. The movement of the piston 152 also causes the carbon powder scoop plate 110 to move, thereby disengaging from the slip ring 210. Once the carbon powder scoop plate 110 is separated from the slip ring 210, it loses its conductive effect, and the carbon powder on the carbon powder scoop plate 110 gradually loses its adhesion, facilitating its removal by wind from the carbon powder collection channel 120, thereby achieving carbon powder collection.

[0050] Reference Figure 3 , Figure 4 In order to further improve the effect of the wind force sucking away the toner on the toner collecting channel 120, the traction assembly 130 of this embodiment specifically includes a belt-shaped component made of insulating material. One end of the belt-shaped component is fixedly connected to the piston 152, and the other end and the toner collecting plate 110 adopt a mutually nested sliding fit structure. A second elastic component 133 is provided in the sliding fit structure to keep the connection end of the toner collecting plate 110 and the connection end of the belt-shaped component separated from each other. Figure 4-Figure 7The sliding fit structure specifically includes an annular portion designed at the end of the carbon powder copying plate 110, and a protrusion 131 is provided at the end of the belt-like component. After the belt-like component is nested in the annular portion, the protrusion 131 is restricted behind the annular portion, and the belt-like component and the carbon powder copying plate 110 can slide relative to each other within a limited distance, and the second elastic component 133 is preferably an ordinary coil spring, which is arranged between the annular portion and the protrusion 131 to maintain this tension. Only under the action of the traction force of the piston 152 can the second elastic component 133 be compressed to separate the belt-like component and the carbon powder copying plate 110 within a set distance. Under the action of separation, the carbon powder on the carbon powder copying plate 110 can be separated from the carbon powder on the belt-like component, and the adsorption force between the carbon powder and the carbon powder almost disappears. In this way, under the action of wind, the carbon powder on the belt-like component can be more easily carried away, thereby realizing local carbon powder collection and avoiding the problem of continuous accumulation of carbon powder and mutual attraction, which makes the carbon powder difficult to be carried away. Although the carbon powder collecting plate 110 is separated from the collector ring 210, the long-term contact causes the electric field to not completely dissipate in a short time, and therefore the adsorption force is also difficult to dissipate in a short time. Therefore, the use of a strip component made of insulating material and the carbon powder collecting plate 110 can help some carbon powder to be more easily sucked away and collected when they are separated.

[0051] In order to improve the adsorption effect, the strip-shaped component is provided with a plurality of through-portions 132 penetrating the thickness direction at one end fixedly connected to the piston 152. The through-portions 132 can be through-grooves or through-holes, which can prevent the strip-shaped component from dividing the carbon powder collection channel 120 and reducing the adsorption effect.

[0052] When the adsorption power assembly 140 stops providing adsorption force, the piston 152 loses its adsorption force and is in a free state; and the toner lifting plate 110 can be driven by the first elastic component to return to a position of elastic contact with the collector ring 210. After the toner lifting plate 110 returns, the belt component can drive the piston 152 to move toward the bottom end of the guide rod, thereby closing the medium channel and achieving closure of the toner collection channel 120.

[0053] Reference Figure 8 The carbon powder collection device 100 of this embodiment further includes a processor 310 and a timer 320. The processor 310 is electrically connected to the timer 320 and the adsorption power assembly 140. In this embodiment, the adsorption power assembly 140 is primarily a centrifugal fan. This structure is configured to periodically turn the centrifugal fan of the adsorption power assembly 140 on and off. Since the amount of carbon powder on the slip ring 210 is relatively small, leaving the adsorption power assembly 140 on for a long time would inevitably waste energy. Therefore, the timer 320 is provided. The time interval of the timer 320 can be set as needed, and the timer 320 outputs a signal at a reasonable time interval to provide an instruction to turn the adsorption power assembly 140 on or off.

[0054] The toner collection method of the toner collection device 100 of this embodiment includes the following steps:

[0055] The processor 310 turns on and off the adsorption power assembly 140 according to the time interval set by the timer 320;

[0056] When the adsorption power assembly 140 is turned on, it provides an adsorption force to the carbon powder collecting channel 120. Under the action of the adsorption force, the piston 152 separates from the valve seat 151, thereby opening the medium channel, so that the carbon powder in the entire carbon powder collecting channel 120 is adsorbed and collected;

[0057] When the piston 152 moves away from the valve seat 151, the piston 152 drives the carbon powder scraper 110 through the traction assembly 130, so that the carbon powder scraper 110 is separated from the surface of the collector ring 210, and the carbon powder on the carbon powder scraper 110 is adsorbed and collected;

[0058] When the adsorption power assembly 140 is closed, the adsorption force in the carbon powder collecting channel 120 disappears, and the carbon powder scraper 110 is reset under the action of the first elastic component, maintaining contact with the surface of the slip ring 210 and continuing to pick up carbon powder on the surface of the slip ring 210; during the reset process of the carbon powder scraper 110, the traction assembly 130 drives the piston 152 to reset, closing the medium channel.

[0059] When the traction assembly 130 drives the toner copy board 110 to move, the belt-shaped component of the traction assembly 130 can be separated from the toner copy board 110, so that the toner on the toner copy board 110 is separated from the toner on the belt-shaped component.

[0060] Example 2

[0061] Reference Figures 9-11 Based on Example 1, this embodiment provides another implementation of the traction assembly 130 and the connection structure between the traction assembly 130 and the toner copy board 110.

[0062] Specifically, the traction assembly 130 includes a strip-shaped component made of an insulating material, one end of which is fixedly connected to the piston 152, and the other end is connected to the toner copy plate 110 by a pull rope component 134. The pull rope component 134 is wound around the rotating shaft of the toner copy plate 110. When the strip-shaped component is pulled by the piston 152, the pull rope component 134 can drive the toner copy plate 110 to rotate to break away from contact with the collector ring 210. Through the connection mode of the pull rope component 134, the belt component can be pulled by the piston 152, so that the belt component is separated from the carbon powder copying plate 110, and a leakage gap is formed between the belt component and the carbon powder copying plate 110. Through the leakage gap, on the one hand, the carbon powder on the carbon powder copying plate 110 can be separated from the carbon powder on the belt component, ensuring that the carbon powder on the belt component can be better sucked away. The specific reasons have been explained above and will not be repeated here. On the other hand, the carbon powder copying plate 110 rotates to form an angle β with the end of the carbon powder collecting channel 120. β≤20°, the rotation angle of the carbon powder copying plate 110 is larger, In this way, the opening size of the toner collecting channel 120 can be reduced, the wind speed at the opening position can be increased, the wind force can be temporarily increased, and the effect of the toner dust on the toner dust collecting plate 110 and the strip component being blown away by the wind can be increased. The leakage gap can also form ventilation. Since the strip component in this embodiment is not provided with the through portion 132 as in Example 1, divided ventilation spaces are formed on both sides of the strip component. The arrangement of the leakage gap can allow the wind on the back of the strip component to concentrate on sucking out the toner on the toner dust collecting plate 110, solving the problem that the toner dust on the toner dust collecting plate 110 has a strong adsorption force, which makes it difficult for the wind to suck out the toner.

Claims

1. A carbon powder collecting device for a fan collector ring chamber, used to collect carbon powder adsorbed on the collector ring surface, characterized in that: include: A carbon powder scraping plate, one end of which contacts the surface of the collector ring and is used to scrape up the carbon powder adsorbed on the surface of the collector ring; A carbon powder collecting channel, wherein the carbon powder collecting plate is arranged at one end of the carbon powder collecting channel, and a first elastic component is provided between the carbon powder collecting plate and the carbon powder collecting channel for maintaining elastic contact between the carbon powder collecting plate and the surface of the collector ring; an adsorption power component connected to the carbon powder collecting channel, and configured to provide adsorption force to adsorb and collect carbon powder in the carbon powder collecting channel; A valve assembly comprising a valve seat and a piston, wherein the valve seat is arranged in the carbon powder collection channel, a medium channel is provided on the valve seat, the piston is slidably arranged relative to the valve seat between blocking the medium channel and opening the medium channel, and the adsorption power assembly is capable of providing an adsorption force to adsorb the piston to open the medium channel; A traction assembly is provided between the piston and the carbon powder copying plate, for pulling the carbon powder copying plate away from the surface of the collector ring when the piston moves; When the adsorption power assembly stops providing the adsorption force, the carbon powder copying plate can be driven by the first elastic component to return to the position of elastic contact with the collector ring.

2. The carbon powder collecting device for the collector ring chamber of a fan according to claim 1, characterized in that: The traction assembly includes a strip-shaped component made of insulating material, one end of the strip-shaped component is fixedly connected to the piston, and the other end and the carbon powder copy plate adopt a mutually nested sliding fit structure, and a second elastic component is provided in the sliding fit structure to keep the connection end of the carbon powder copy plate and the connection end of the strip-shaped component separated from each other.

3. The carbon powder collecting device for the collector ring chamber of a fan according to claim 2, characterized in that: The strip-shaped component is provided with a plurality of through parts penetrating in the thickness direction at one end fixedly connected to the piston.

4. The carbon powder collecting device for the collector ring chamber of a fan according to claim 1, characterized in that: The traction assembly includes a belt-shaped component made of insulating material, one end of the belt-shaped component is fixedly connected to the piston, and the other end is connected to the carbon powder copying plate by a pull rope component. The pull rope component is wound around the rotating shaft of the carbon powder copying plate. When the belt-shaped component is pulled by the piston, the carbon powder copying plate can be driven to rotate through the pull rope component to break away from contact with the collector ring.

5. The carbon powder collecting device for the collector ring chamber of a fan according to claim 4, characterized in that: The belt-shaped component can be pulled by the piston to separate the belt-shaped component from the carbon powder copying plate to form a material leakage gap, and the carbon powder copying plate rotates to form an angle β with the end of the carbon powder collecting channel, β≤20°.

6. The carbon powder collecting device for the collector ring chamber of a fan according to claim 1, characterized in that: There are a plurality of carbon powder collecting channels, which are arranged around the outer circumference of the collector ring; The distance between the carbon powder collecting channel and the collector ring gradually increases from the connecting end of the carbon powder collecting plate to the other end.

7. The carbon powder collecting device for the collector ring chamber of a fan according to claim 1, characterized in that: The adsorption power assembly includes a centrifugal fan and a filter component. The filter component is arranged at the front end of the centrifugal fan and is used for filtering and collecting carbon powder.

8. The carbon powder collecting device for the collector ring chamber of a fan according to claim 1, characterized in that: The device also includes a processor and a timer. The processor is electrically connected to the timer and the adsorption power component respectively, and is used to open and close the adsorption power component at intervals.

9. A method for collecting carbon powder based on the carbon powder collecting device of a fan slip ring chamber according to any one of claims 1 to 8, comprising the following steps: The processor turns on and off the adsorption power component according to the time interval set by the timer; When the adsorption power component is turned on, it provides adsorption force to the carbon powder collection channel. Under the action of the adsorption force, the piston separates from the valve seat, thereby opening the medium channel, so that the carbon powder in the entire carbon powder collection channel is adsorbed and collected; When the piston moves away from the valve seat, the piston drives the carbon powder copy plate through the traction assembly, so that the carbon powder copy plate is separated from the surface of the collector ring, and the carbon powder on the carbon powder copy plate is adsorbed and collected; When the adsorption power component is turned off, the adsorption force in the carbon powder collection channel disappears, and the carbon powder copying plate is reset under the action of the first elastic component, maintaining contact with the surface of the collector ring and continuing to pick up the carbon powder on the surface of the collector ring; during the reset of the carbon powder copying plate, the piston is driven to reset by the traction component to close the medium channel.

10. The method for collecting carbon powder according to claim 9, wherein: When the traction component drives the toner copy board to move, the belt-shaped component of the traction component can be separated from the toner copy board, so that the toner on the toner copy board is separated from the toner on the belt-shaped component.

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