Powder collector

Abstract

The present application provides a powder collector, wherein a driving motor drives a swing mechanism to rotate, so that the swing mechanism applies a striking force to the filter screen to drive the filter screen to vibrate, so that the dust on the filter screen falls off into the dust collecting tank. By driving the swing mechanism, the filter screen can automatically clean the attached dust, reducing the need for manual cleaning and improving the operating efficiency and service life of the filtration system. Vibration helps dust particles to separate from the surface of the filter screen and fall into the dust collecting tank to automatically collect metal powder, thereby maintaining the filtration efficiency of the filter screen and reducing the maintenance frequency.

Description

Technical Field

[0001] The present application relates to the field of pipelines, and in particular to a powder collector. Background Art

[0002] During the process of cutting, welding and grinding metal, a lot of air containing metal dust will be generated. The air containing metal powder will be drawn out through the fresh air system, and filters are often installed in the fresh air system to prevent the direct discharge of metal powder.

[0003] During long-term use, a large amount of metal powder will adhere to the filter, causing the filter holes on the filter to be blocked by metal dust, thus affecting the ventilation effect of the fresh air system and not being conducive to the collection of metal powder. Cleaners are often required to clean the fresh air system to prevent the filter from being blocked by metal powder. If a cleaner is used for cleaning, the cleaner needs to remove the filter in the powder filter of the pipe in the fresh air system and then clean it. The removal and installation of the filter is very time-consuming, and each removal and installation will affect normal processing. Utility Model Content

[0004] In view of this, it is necessary to provide a powder collector to solve the above problems.

[0005] An embodiment of the present application provides a powder collector, comprising:

[0006] A pipe having a hollow passage and a dust collecting groove in communication with the hollow passage formed therein;

[0007] A filter screen is provided with a filter channel, the filter screen is arranged in the hollow channel and extends into the dust collecting tank;

[0008] A driving motor is disposed on the pipe and extends into the hollow passage;

[0009] A swing mechanism is located in the hollow channel;

[0010] The distance from the output end of the driving motor to the filter is recorded as a, and the distance from one end of the swing mechanism to the output end of the driving motor and the other end of the swing mechanism to the driving motor is recorded as b, satisfying the relationship: a<b;

[0011] The driving motor drives the swing mechanism to rotate, so that the swing mechanism applies striking force to the filter screen to drive the filter screen to vibrate, so that the dust on the filter screen falls off into the dust collecting tank.

[0012] In at least one embodiment of the present application, the swing mechanism includes:

[0013] An arc-shaped plate, one end of which is rotatably connected to the output shaft of the driving motor;

[0014] A striking plate, one end of which is rotatably connected to an end of the arc-shaped plate away from the output shaft;

[0015] The length of the arc plate is denoted as c, and the length of the striking plate is denoted as d, satisfying the relationship: c>c and c+d>a.

[0016] In at least one embodiment of the present application, a middle portion of the arc-shaped plate protrudes along the rotation direction of the drive motor to form a first eccentric portion;

[0017] The driving motor moves to drive the arc plate to rotate, so that the first eccentric part generates centrifugal force and acts on the striking plate, so that the striking plate strikes the filter screen.

[0018] In at least one embodiment of the present application, a side of the striking plate away from the first eccentric portion is recessed inward to form a second eccentric portion.

[0019] In at least one embodiment of the present application, the powder collector further comprises:

[0020] The dust shield is arranged at one end of the filter away from the swing mechanism. The dust shield is located in the hollow channel and is surrounded by the inner wall of the hollow channel to form the dust collecting groove. The dust shield is provided with a connecting hole, and the dust collecting groove is connected with the hollow channel through the connecting hole.

[0021] In at least one embodiment of the present application, there are two filter screens;

[0022] The middle part of the dust shield protrudes toward the side close to the filter to form a convex part, and the two sides of the convex part are provided with a first inclined surface and a second inclined surface, and the two filter screens are respectively in contact with the first inclined surface and the second inclined surface.

[0023] In at least one embodiment of the present application, the filter channels of the two filter nets are both opened obliquely toward the convex portion, and the two filter nets are arranged in mirror symmetry with the convex portion as the center.

[0024] In at least one embodiment of the present application, there are two communicating holes, which are respectively opened on the first inclined surface and the second inclined surface, and the communicating holes are located at the abutment between the filter screen and the dust shield.

[0025] In at least one embodiment of the present application, the inner wall of the hollow channel protrudes to form a limit block;

[0026] In the length direction of the hollow channel, there is a gap between the limit block and the filter screen, and the distance from the filter screen to the output end of the drive motor is greater than the distance from the limit block to the filter screen.

[0027] In at least one embodiment of the present application, an opening is provided on the pipe in a direction perpendicular to the length of the hollow channel, and the opening is connected to the hollow channel and the dust collecting tank;

[0028] The powder collector also includes:

[0029] The movable cover is covered on the pipeline and shields the dust collecting groove.

[0030] The powder collector of this embodiment has at least the following beneficial effects:

[0031] In the powder collector provided above, the driving motor drives the swing mechanism to rotate, so that the swing mechanism applies a striking force to the filter to drive the filter to vibrate, so that the dust on the filter falls off into the dust collecting tank. By driving the swing mechanism, the filter can automatically clean the attached dust, reducing the need for manual cleaning and improving the operating efficiency and service life of the filtration system. Vibration helps dust particles to break away from the surface of the filter and fall into the dust collecting tank to automatically collect metal powder, thereby maintaining the filtration efficiency of the filter and reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a three-dimensional diagram of the powder collector of the utility model;

[0033] Figure 2 for Figure 1 Exploded view of the powder collector in FIG.

[0034] Figure 3 for Figure 2 A three-dimensional diagram of some structures in;

[0035] Figure 4 for Figure 1 Another perspective view of the powder collector;

[0036] Figure 5 for Figure 1 Another angled stereoscopic image of the powder collector in FIG.

[0037] Main component symbols

[0038] 100. Powder collector;

[0039] 110, pipe; 110a, hollow channel; 110b, dust collecting groove; 110c, opening;

[0040] 120, filter screen; 120a, filter channel;

[0041] 130. Driving motor;

[0042] 140, swing mechanism; 141, arc plate; 1411, first eccentric portion; 142, striking plate; 1421, second eccentric portion;

[0043] 150, dust shield; 151, convex portion; 151a, first inclined surface; 151b, second inclined surface; 151c, communication hole;

[0044] 160, limit block;

[0045] 170. Movable cover. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0047] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0048] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0049] The embodiment of the present application provides a powder collector 100, comprising:

[0050] The pipe 110 has a hollow passage 110a and a dust collecting groove 110b in communication with the hollow passage 110a;

[0051] The filter screen 120 has a filter channel 120a, and the filter screen 120 is disposed in the hollow channel 110a and extends into the dust collecting groove 110b;

[0052] A driving motor 130 is disposed on the pipe 110 and extends into the hollow passage 110a;

[0053] The swing mechanism 140 is located in the hollow channel 110a;

[0054] The distance from the output end of the driving motor 130 to the filter 120 is recorded as a, and the distance from one end of the swing mechanism 140 to the output end of the driving motor 130 and the distance from the other end of the swing mechanism 140 to the driving motor 130 is recorded as b, satisfying the relationship: a<b;

[0055] The driving motor 130 drives the swing mechanism 140 to rotate, so that the swing mechanism 140 applies striking force to the filter 120 to drive the filter 120 to vibrate, so that the dust on the filter 120 falls off into the dust collecting trough 110b.

[0056] Please refer to Figure 1-Figure 5 In this embodiment, the driving motor 130 drives the swing mechanism 140 to rotate, so that the swing mechanism 140 applies an impact force to the filter 120 to drive the filter 120 to vibrate, so that the dust on the filter 120 falls off into the dust collecting trough 110b. By driving the swing mechanism 140, the filter 120 can automatically clean the attached dust to collect metal powder, so that the metal powder can be reused, reducing the need for manual cleaning and improving the operating efficiency and service life of the filtration system.

[0057] The vibration helps dust particles to break away from the surface of the filter 120 and fall into the dust collecting groove 110b, thereby maintaining the filtering efficiency of the filter 120 and reducing the maintenance frequency.

[0058] a is the distance from the output end of the driving motor 130 to the filter 120 ; b is the distance from one end of the swing mechanism 140 to the output end of the driving motor 130 .

[0059] Ensure that the swing mechanism 140 has sufficient lever length to enhance the swing effect, improve the efficiency of striking the filter screen 120, and make the vibration of the filter screen 120 more effective.

[0060] A hollow channel 110 a is formed inside the pipe 110 , and the hollow channel 110 a is communicated with the dust collecting groove 110 b .

[0061] The hollow channel 110 a is used to guide the flow of air carrying metal dust, and the dust collecting groove 110 b is used to collect and store the dust falling off the filter screen 120 .

[0062] The filter screen 120 is disposed in the hollow channel 110a and extends into the dust collecting tank 110b, and a filter channel 120a is defined.

[0063] The filter 120 intercepts dust particles passing through the hollow channel 110 a and prevents them from being discharged into the external environment along with the air, so as to collect metal powder.

[0064] The driving motor 130 is disposed on the pipe 110 and extends into the hollow passage 110 a.

[0065] The driving motor 130 provides a power source for driving the swing mechanism 140 to move.

[0066] The swing mechanism 140 is located in the hollow channel 110 a , and one end of the swing mechanism 140 is connected to the driving motor 130 .

[0067] The swing mechanism 140 is rotated by the power of the driving motor 130 , and applies striking force to the filter 120 , so that the filter 120 vibrates.

[0068] In at least one embodiment of the present application, the swing mechanism 140 includes:

[0069] An arc-shaped plate 141, one end of which is rotatably connected to the output shaft of the driving motor 130;

[0070] A striking plate 142, one end of which is rotatably connected to an end of the arc plate 141 away from the output shaft;

[0071] The length of the arc plate 141 is denoted as c, and the length of the striking plate 142 is denoted as d, satisfying the relationship: c>c and c+d>a.

[0072] Please refer to Figure 1-Figure 5 In this embodiment, one end of the arc plate 141 is rotatably connected to the output shaft of the driving motor 130 .

[0073] One end of the striking plate 142 is rotatably connected to the end of the arc plate 141 away from the output shaft. The striking plate 142 directly contacts the filter screen 120 and applies striking force to the filter screen 120 through the kinetic energy transmitted by the arc plate 141.

[0074] The length of the arc plate 141 is c, and the length of the striking plate 142 is d, and the relationship indicates that c+d>a. The length of the overall swing mechanism 140 exceeds the distance a from the output end of the drive motor 130 to the filter 120, ensuring that the striking plate 142 can effectively contact and vibrate the filter 120.

[0075] The output shaft of the driving motor 130 is connected to the arc plate 141, so that the rotation of the motor is directly converted into the swing of the arc plate 141. The shape of the arc plate 141 is designed to be an arc to enhance the striking force by using centrifugal force and the principle of leverage.

[0076] The swing of the arc plate 141 is converted into a more direct striking action through the striking plate 142 connected to its distal end. Since the sum of the lengths of the arc plate 141 and the striking plate 142 is greater than the distance from the drive motor 130 to the filter screen 120, the striking plate 142 can move in a larger range, providing a wide vibration coverage area and enhanced vibration intensity.

[0077] The system can continue to operate without interrupting the workflow. The action of the striking plate 142 causes the dust particles adhering to the filter screen 120 to fall off due to vibration and then fall into the dust collecting tank 110b to collect the metal powder and reuse the metal powder to maintain the filtration efficiency and air circulation.

[0078] The automatic cleaning function reduces the need for manual cleaning, reduces maintenance costs, and extends the service life of the filter 120 and the entire fresh air system.

[0079] Ensure that the filter 120 always maintains a low resistance so that air can continue to circulate, thereby improving the overall ventilation effect and energy efficiency.

[0080] In at least one embodiment of the present application, the middle portion of the arc-shaped plate 141 protrudes along the rotation direction of the driving motor 130 to form a first eccentric portion 1411;

[0081] The driving motor 130 moves to drive the arc plate 141 to rotate, so that the first eccentric portion 1411 generates centrifugal force and acts on the striking plate 142 , so that the striking plate 142 strikes the filter screen 120 .

[0082] In at least one embodiment of the present application, a side of the striking plate 142 away from the first eccentric portion 1411 is recessed inward to form a second eccentric portion 1421 .

[0083] Please refer to Figure 1-Figure 5 In this embodiment, the driving motor 130 drives the arc plate 141 to rotate through its output shaft. When the motor moves, it not only rotates the arc plate 141, but also generates additional centrifugal force on the arc plate 141 through the first eccentric portion 1411.

[0084] Due to the position and shape of the first eccentric portion 1411 , when the arc plate 141 rotates, the centrifugal force generated is more significant than that of ordinary circular motion. The increase in centrifugal force is converted into a stronger striking force, which is transmitted to the filter screen 120 through the striking plate 142 .

[0085] The second eccentric portion 1421 enables the striking plate 142 to adjust the intensity of the impact when receiving the power from the arc plate 141 to adapt to different types or accumulated amounts of dust.

[0086] The first eccentric portion 1411 and the second eccentric portion 1421 optimize the power conversion and striking efficiency of the entire swing mechanism 140, and can more effectively vibrate the filter screen 120, so that dust is more easily removed, so as to collect metal powder and reuse the metal powder.

[0087] The second eccentric portion 1421 provides a method for adjusting the cleaning force and frequency, so that the device can better adapt to different working environments and needs.

[0088] The middle portion of the arc-shaped plate 141 protrudes along the rotation direction of the driving motor 130 to form a first eccentric portion 1411 of the arc-shaped plate 141 .

[0089] The first eccentric portion 1411 generates centrifugal force when the arc-shaped plate 141 rotates, thereby increasing the dynamic weight distribution of the arc-shaped plate 141 and generating greater force during the rotation process.

[0090] The side of the striking plate 142 away from the first eccentric portion 1411 is recessed inwardly to form a second eccentric portion 1421 .

[0091] The second eccentric portion 1421 adjusts the mass distribution and vibration characteristics of the striking plate 142 , so that the striking plate 142 can strike the filter screen 120 with different forces or frequencies when subjected to the centrifugal force.

[0092] It should be noted that, during the rotation of the driving motor 130, the arc plate 141 is driven to rotate, thereby driving the striking plate 142 to rotate around the axis of the driving motor 130. Due to the centrifugal force of the arc plate 141, the striking plate 142 will expand along the length direction of the arc plate 141 when there is no collision. When the striking plate 142 collides with the filter 120, as the driving motor 130 rotates, the striking plate 142 will rotate relative to the arc plate 141, and rotate around the end of the arc plate 141 away from the driving motor 130, so that the striking plate 142 is "folded" relative to the arc plate 141 to contact and rotate with the filter 120. When it rotates until it is no longer in contact with the filter 120, as the centrifugal force exists, the striking plate 142 is again expanded relative to the arc plate 141 to prepare for the next collision.

[0093] In at least one embodiment of the present application, the powder collector 100 further includes:

[0094] The dust shield 150 is provided at one end of the filter 120 away from the swing mechanism 140. The dust shield 150 is located in the hollow channel 110a and is formed together with the inner wall of the hollow channel 110a to form the dust collecting groove 110b. The dust shield 150 is provided with a connecting hole 151c, and the dust collecting groove 110b is connected with the hollow channel 110a through the connecting hole 151c.

[0095] Please refer to Figure 1-Figure 5In this embodiment, when air is transmitted through the hollow passage 110a, the air with dust will first be captured by the filter 120. The filtered air needs to flow out from the rear of the filter 120. At this time, the connecting hole 151c on the dust shield 150 allows dust to enter the dust collecting groove 110b to collect metal powder and reuse the metal powder.

[0096] The movement of the swing mechanism 140 causes the dust adhering to the filter screen 120 to fall off due to vibration. These fallen dust particles fall into the dust collecting groove 110b under the action of gravity and air flow. The dust shield 150 ensures that the dust can be effectively collected and prevents it from being brought back to the channel or discharged from the system by the air again.

[0097] The dust shield 150 optimizes the flow paths of air and dust, reduces the resuspension and escape of dust, and thus improves the efficiency of the entire filtering system.

[0098] Because the dust shield 150 effectively concentrates and collects dust, the need for frequent cleaning and replacement of the filter 120 is reduced, thereby extending the maintenance period of the equipment and reducing maintenance costs.

[0099] The dust shield 150 is disposed at one end of the filter 120 away from the swing mechanism 140 and is located in the hollow channel 110a. The dust shield 150 and the inner wall of the hollow channel 110a together form a dust collecting groove 110b.

[0100] The dust shield 150 is a conical structure.

[0101] The dust shield 150 not only fixes and protects the filter screen 120, but also controls and guides the flow direction and concentration of dust, thereby improving the efficiency of dust collection.

[0102] In at least one embodiment of the present application, there are two filters 120;

[0103] The middle portion of the dust shield 150 protrudes toward the side close to the filter 120 to form a convex portion 151, and the two sides of the convex portion 151 are provided with a first inclined surface 151a and a second inclined surface 151b, and the two filter screens 120 are respectively in contact with the first inclined surface 151a and the second inclined surface 151b.

[0104] In at least one embodiment of the present application, the filter channels 120 a of the two filter nets 120 are both opened obliquely toward the convex portion 151 , and the two filter nets 120 are arranged in a mirror-symmetrical manner with the convex portion 151 as the center.

[0105] Please refer to Figure 1-Figure 5 In this embodiment, the air first passes through the first filter 120, which captures most of the dust and impurities.

[0106] The purified air is guided by the convex portion 151 and flows from the first inclined surface 151 a to the second filter 120 .

[0107] The second filter 120 performs a more detailed filtration to ensure that dust particles with smaller sizes are captured, thereby improving the filtration effect.

[0108] The air guiding function of the convex portion 151 and the first inclined surface 151 a ensures the efficiency and effectiveness of air flowing through the two filter screens 120 , thereby reducing resistance and dead angles of air flow.

[0109] The filter includes two filter nets 120 , which are arranged in mirror symmetry with the protrusion 151 as the center, and the filter channel 120 a is opened obliquely toward the protrusion 151 .

[0110] The air first passes through one filter 120 for preliminary filtration, and then flows to another filter 120 for further fine filtration. The overall filtration efficiency is improved, and the dust capture capacity is also enhanced through staged processing.

[0111] In at least one embodiment of the present application, there are two connecting holes 151c, and the two connecting holes 151c are respectively opened on the first inclined surface 151a and the second inclined surface 151b, and the connecting holes 151c are located at the abutment between the filter net 120 and the dust shield 150.

[0112] Please refer to Figure 1-Figure 5 In this embodiment, the air first passes through the first filter 120 to perform preliminary large-particle dust filtration.

[0113] The air purified by the first filter 120 then flows to the second filter 120 for finer filtration.

[0114] In a non-ventilation state, the driving motor 130 is started and drives the swing mechanism 140 to operate.

[0115] The swing mechanism 140 strikes the two filter screens 120 , so that the metal dust attached to the screens falls off due to the vibration.

[0116] The fallen dust enters the dust collecting groove 110b through the two communicating holes 151c and is collected.

[0117] The connecting hole 151c not only promotes effective filtering of air, but also effectively collects the metal dust that is vibrated and falls when the system is not ventilated, thereby preventing it from being raised again or clogging the filter screen 120.

[0118] In at least one embodiment of the present application, the inner wall of the hollow channel 110a protrudes to form a limit block 160;

[0119] In the length direction of the hollow channel 110 a , there is a gap between the limit block 160 and the filter 120 , and the distance from the filter 120 to the output end of the drive motor 130 is greater than the distance from the limit block 160 to the filter 120 .

[0120] Please refer to Figure 1-Figure 5 In this embodiment, the filter screen 120 is placed in the hollow channel 110a during installation, and maintains a certain gap with the limit block 160. This ensures that the filter screen 120 can vibrate freely under the action of the swing mechanism 140, but will not move to a position that may cause damage.

[0121] During normal operation, the filter screen 120 can slightly vibrate back and forth under the constraint of the limit block 160 to prevent the filter screen 120 from being out of the original position or damaged due to excessive swinging.

[0122] The limiting block 160 can effectively protect the filter screen 120 from excessive mechanical stress, thereby extending its service life.

[0123] Keeping the filter 120 in a proper position and within a vibration range helps to improve the filtering effect and ensure the efficiency of air circulation and dust collection.

[0124] In at least one embodiment of the present application, an opening 110c is provided on the pipe 110 in a direction perpendicular to the length of the hollow channel 110a, and the opening 110c is connected to the hollow channel 110a and the dust collecting groove 110b;

[0125] The powder collector 100 further includes:

[0126] The movable cover 170 covers the duct 110 and shields the dust collecting groove 110b.

[0127] Please refer to Figure 1-Figure 5 In this embodiment, when the inside of the filter needs to be inspected or maintained, the movable cover 170 can be easily removed to directly access the hollow channel 110a and the dust collecting groove 110b through the opening 110c.

[0128] When the filter operates normally, the movable cover 170 is closed, ensuring that the dust is effectively collected in the dust collecting groove 110b while preventing the dust from leaking into the environment.

[0129] The movable cover 170 is fixed to the pipe 110 by hinges and bayonet joints.

[0130] The movable cover 170 covers the opening 110c to protect the internal structure and prevent dust from spilling out.

[0131] The movable cover 170 not only protects the internal mechanism from the external environment, but also allows the user to quickly open it for inspection, maintenance or cleaning when necessary.

[0132] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A powder collector, characterized in that: include: A pipe having a hollow passage and a dust collecting groove in communication with the hollow passage formed therein; A filter screen is provided with a filter channel, the filter screen is arranged in the hollow channel and extends into the dust collecting tank; A driving motor is disposed on the pipe and extends into the hollow passage; A swing mechanism is located in the hollow channel; The distance from the output end of the driving motor to the filter is recorded as a, and the distance from one end of the swing mechanism to the output end of the driving motor and the other end of the swing mechanism to the driving motor is recorded as b, satisfying the relationship: a<b; The driving motor drives the swing mechanism to rotate, so that the swing mechanism applies striking force to the filter screen to drive the filter screen to vibrate, so that the dust on the filter screen falls off into the dust collecting tank.

2. The powder collector according to claim 1, characterized in that: The swing mechanism comprises: An arc-shaped plate, one end of which is rotatably connected to the output shaft of the driving motor; A striking plate, one end of which is rotatably connected to an end of the arc-shaped plate away from the output shaft; The length of the arc plate is denoted as c, and the length of the striking plate is denoted as d, satisfying the relationship: c>c and c+d>a.

3. The powder collector according to claim 2, characterized in that: The middle part of the arc-shaped plate protrudes along the rotation direction of the driving motor to form a first eccentric part; The driving motor moves to drive the arc plate to rotate, so that the first eccentric part generates centrifugal force and acts on the striking plate, so that the striking plate strikes the filter screen.

4. The powder collector according to claim 3, characterized in that: The striking plate is recessed inwardly at one side away from the first eccentric portion to form a second eccentric portion.

5. The powder collector according to claim 1, characterized in that: The powder collector also includes: The dust shield is arranged at one end of the filter away from the swing mechanism. The dust shield is located in the hollow channel and is surrounded by the inner wall of the hollow channel to form the dust collecting groove. The dust shield is provided with a connecting hole, and the dust collecting groove is connected with the hollow channel through the connecting hole.

6. The powder collector according to claim 5, characterized in that: There are two filters; The middle part of the dust shield protrudes toward the side close to the filter to form a convex part, and the two sides of the convex part are provided with a first inclined surface and a second inclined surface, and the two filter screens are respectively in contact with the first inclined surface and the second inclined surface.

7. The powder collector according to claim 6, characterized in that: The filtering channels of the two filtering screens are both opened obliquely toward the convex portion, and the two filtering screens are arranged in a mirror-symmetrical manner with the convex portion as the center.

8. The powder collector according to claim 6, characterized in that: There are two communicating holes, which are respectively opened on the first inclined surface and the second inclined surface, and the communicating holes are located at the abutment between the filter screen and the dust shield.

9. The powder collector according to claim 1, characterized in that: The inner wall of the hollow channel protrudes to form a limited position block; In the length direction of the hollow channel, there is a gap between the limit block and the filter screen, and the distance from the filter screen to the output end of the drive motor is greater than the distance from the limit block to the filter screen.

10. The powder collector according to claim 1, characterized in that: An opening is formed on the pipe in a direction perpendicular to the length of the hollow channel, and the opening is connected to the hollow channel and the dust collecting tank; The powder collector also includes: The movable cover is covered on the pipeline and shields the dust collecting groove.

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