Processing device for internal air duct of air blower

Abstract

The invention belongs to the technical field of blower machining, and particularly relates to a blower internal air duct machining device which comprises a workbench, a clamping part used for clamping a blower air duct and a polishing part used for polishing the interior of the blower air duct are arranged on the workbench, and a placement table is fixedly installed on the polishing part. A dust collection cover used for being arranged outside an air duct of the blower in a sleeving mode is fixedly installed on the placement table, one end of the dust collection cover is open, an air pipe is arranged in the dust collection cover, a blowing head is fixedly installed at one end of the air pipe, and an airflow conveying assembly is arranged on the placement table and used for enabling the interior of the dust collection cover to be in negative pressure and enabling the interior of the air pipe to be in positive pressure. A control disc is installed on the air pipe in a sliding mode, an elastic ring is installed on the control disc in an eccentric rotating mode, dust inside an air duct of the blower is removed, the problem that the dust is carbonized and combined at high temperature can be solved, the influence on airflow is reduced, and meanwhile extra noise is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of hair dryer processing, in particular to a device for processing an internal air cylinder of a hair dryer. Background Art

[0002] The hair dryer's internal air cylinder processing device is a special equipment used to manufacture its core air flow channel. It usually uses metal or high-temperature resistant plastic, and initially shapes the cylinder structure through stamping, injection molding or spin forming. It is then precisely processed by CNC machine tools to ensure a smooth inner wall and a regular shape. It is then assembled with heating elements, motor brackets and other components through laser welding or riveting processes, and quality is verified using air volume testers and air tightness testing equipment. Ultimately, it ensures that the air cylinder has efficient air conduction, low noise and durability, while meeting lightweight and safety standards.

[0003] In order to reduce air flow resistance, increase air volume efficiency and reduce noise, while preventing dust accumulation and uneven heat distribution, the unpolished inner wall of the hair dryer will cause air flow turbulence due to the rough surface, which not only reduces the hair drying speed and increases the operating noise. Therefore, the hair dryer hair dryer needs to be precisely polished.

[0004] However, when polishing and grinding the inside of the hair dryer barrel, the debris generated will accumulate inside the hair dryer barrel. When the inside of the hair dryer is heated, the dust will carbonize at high temperature and combine with the inner wall of the hair dryer barrel. The dust at this time will block the airflow, affecting the airflow, and will also generate additional noise. The debris will make it easier for bacteria to grow, thus affecting the user experience.

[0005] To this end, the present invention provides a device for processing the internal air cylinder of a hair dryer. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a hair dryer internal air cylinder processing device described in the present invention comprises a workbench, on which a clamping component for clamping the hair dryer air cylinder and a grinding component for grinding the inside of the hair dryer air cylinder are arranged;

[0008] A placement platform is fixedly installed on the polishing component, a dust collecting hood for sleeved on the outside of the hair dryer cylinder is fixedly installed on the placement platform, one end of the dust collecting hood is open, an air duct is arranged inside the dust collecting hood, and a blowing head is fixedly installed on one end of the air duct;

[0009] An air flow conveying assembly is arranged on the placement table, which is used to make the interior of the dust collecting hood negative pressure and to make the interior of the air duct positive pressure;

[0010] A control panel is slidably installed on the air duct. An elastic ring is eccentrically rotatably installed on the control panel, and a tearable viscous layer for adhering dust is arranged on the outer wall of the elastic ring;

[0011] A filter screen is arranged inside the dust collection hood. A hollow collection ring is fixedly installed on the air duct. A cleaning rod is fixedly installed on the outer wall of the collection ring. One end of the cleaning rod is in contact with the filter screen, and the cleaning rod is provided with an opening;

[0012] The air flow conveying component includes an air pump, a positive pressure pipe and a negative pressure pipe. The air pump is fixedly installed on the placement table. Both the positive pressure pipe and the negative pressure pipe are connected to the air pump. The other end of the positive pressure pipe is communicated with the air duct, and the other end of the negative pressure pipe extends into the dust collection hood;

[0013] The control panel is hollow. A moving ring is fixedly installed at the central position of the control panel through a connecting rod. The air duct is rotatably installed on the inner wall of the dust collection hood. A reciprocating thread groove is formed on the outer wall of the air duct. The moving ring is threadedly connected to the air duct;

[0014] An activity groove is formed on the inner wall of the control panel. The elastic ring is installed inside the activity groove through a guide rod. A plurality of pressing balls for pressing the elastic ring are arranged inside the control panel;

[0015] A turntable is rotatably installed inside the control panel. A positioning ring is fixedly connected to the side wall of the turntable through a positioning rod. The positioning ring is slidably installed on the outer wall of the air duct. A plurality of partition plates are fixedly installed on the outer wall of the turntable. A pressing ball is arranged between every two partition plates;

[0016] A dust collection box is fixedly installed at the bottom end of the dust collection hood. A dust suction cylinder is fixedly installed inside the dust collection hood. A piston is slidably installed inside the dust suction cylinder. A dust suction pipe and a dust delivery pipe are arranged on the dust suction cylinder. The other end of the dust suction pipe extends into the collection ring, and the other end of the dust delivery pipe extends into the dust collection box. One-way valves are arranged on both the dust delivery pipe and the dust suction pipe;

[0017] A sliding rod is slidably installed inside the dust suction cylinder. One end of the sliding rod is fixedly connected to the piston. A reciprocating lead screw is threadedly connected inside the sliding rod. A transmission gear is fixedly installed at the top end of the reciprocating lead screw. A driving gear meshing with the transmission gear is fixedly installed on the outer wall of the collection ring;

[0018] One end of the air duct away from the spray head is rotatably installed with an air transmission cylinder. One end of the air transmission cylinder is fixedly connected to the outer wall of the dust collection hood. An impeller is installed inside the air transmission cylinder. The impeller is fixedly connected to the inner wall of the air duct through a rotating shaft. One end of the positive pressure pipe extends into the air transmission cylinder;

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A processing device for the inner air duct of a hair dryer according to the present invention, wherein the air flow conveying component and the dust collection hood structure achieve efficient dust collection through the cooperation of positive and negative pressures. Driven by an air pump, the positive pressure pipe sprays air flow into the inner wall of the air duct through a spray head, impacting dust and debris to make them detached. At the same time, the negative pressure environment in the inner cavity of the dust collection hood forces the dust-containing air flow to flow into the dust collection area directionally. The elastic ring can drive the tearable adhesive layer to circularly adhere to and clean the inner wall of the hair dryer air duct. By removing the dust and debris inside the hair dryer air duct, it is possible to solve the problem of carbon compounds formed by dust and debris at high temperatures, reduce the influence on the air flow, and reduce additional noise.

[0021] 2. A processing device for the inner air duct of a hair dryer according to the present invention. When the air flow enters the air transmission tube, it blows the impeller, causing the impeller to drive the air duct to rotate. The air duct also drives the collection ring and the cleaning rod to rotate, scraping off the dust blocked on the filter screen and sending it into the inner cavity of the collection ring. The collection ring drives the driving gear to rotate, driving the transmission gear to rotate, and the reciprocating screw rod will drive the sliding rod and the piston to slide up and down reciprocally inside the dust suction cylinder, and cooperate with the dust delivery pipe and the dust suction pipe to send the dust and debris in the collection ring into the inner cavity of the dust collection box for collection. Brief Description of the Drawings

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is a perspective view of the present invention;

[0024] Figure 2 is a schematic structural view of the placement table in the present invention;

[0025] Figure 3 is a cross-sectional view of the dust collection hood in the present invention;

[0026] Figure 4 is in the present invention Figure 3 the enlarged view at position A;

[0027] Figure 5 is in the present invention Figure 3 the enlarged view at position B.

[0028] In the figure: 1, workbench; 2, clamping component; 3, grinding component; 4, placement table; 5, air pump; 6, negative pressure pipe; 7, positive pressure pipe; 8, dust collection box; 9, dust collection hood; 10, air duct; 11, spray head; 12, air transmission tube; 13, impeller; 14, filter screen; 15, collection ring; 16, cleaning rod; 17, dust delivery pipe; 18, dust suction pipe; 19, control panel; 20, elastic ring; 21, movable groove; 22, turntable; 23, positioning ring; 24, piston; 25, moving ring; 26, partition board; 27, pressing ball; 28, driving gear; 29, transmission gear; 30, reciprocating screw rod; 31, sliding rod; 32, dust suction cylinder. Detailed Embodiment

[0029] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0030] As Figures 1 to 5 shown, a processing device for the inner air duct of a hair dryer according to an embodiment of the present invention includes a workbench 1, a clamping member 2 for clamping the air duct of the hair dryer and a grinding member 3 for grinding the inside of the air duct of the hair dryer are provided on the workbench 1;

[0031] Both the clamping member 2 and the grinding member 3 are well-known technical means to those skilled in the art, and will not be elaborated here too much.

[0032] An installation table 4 is fixedly installed on the grinding member 3, a dust collection cover 9 for sleeving outside the air duct of the hair dryer is fixedly installed on the installation table 4, one end of the dust collection cover 9 is open, and an air duct 10 is arranged inside the dust collection cover 9, and one end of the air duct 10 is fixedly installed with a blowing head 11;

[0033] An air flow conveying component is arranged on the installation table 4 for making the inside of the dust collection cover 9 in a negative pressure and for making the inside of the air duct 10 in a positive pressure;

[0034] The hair dryer air duct is clamped by the clamping member 2, and then moved to the grinding member 3, so that the grinding member 3 grinds the inner wall of the hair dryer air duct. Then, the hair dryer air duct is driven to move downward by the clamping member 2, and the dust collection cover 9 is sleeved on the outer wall of the hair dryer air duct. At this time, the blowing head 11 will enter the inside of the hair dryer air duct. The air flow is sent into the inside of the air duct 10 through the arranged air flow conveying component and sprayed out through the arranged blowing head 11. At this time, the air flow is sprayed inside the hair dryer air duct (the end of the hair dryer air duct not covered by the dust collection cover 9 needs to be blocked). After the air flow impacts the inner wall of the hair dryer air duct, it will flow towards the inner cavity of the dust collection cover 9. Because at this time, under the action of the air flow conveying component, the inner cavity of the dust collection cover 9 is in a negative pressure, and the gas sprayed by the blowing head 11 blows the dust and debris inside the hair dryer air duct into the inside of the dust collection cover 9 for collection. By removing the dust and debris inside the hair dryer air duct, it is possible to solve the problem that the dust and debris are carbonized at high temperatures, reduce the influence on the air flow, and reduce additional noise.

[0035] A control disk 19 is slidably installed on the air duct 10, an elastic ring 20 is eccentrically rotatably installed on the control disk 19, and a tearable viscous layer for adhering dust is arranged on the outer wall of the elastic ring 20;

[0036] When the dust collection hood 9 is sleeved on the air duct of the hair dryer, at this time, the dust in the air duct of the hair dryer is blown into the interior of the dust collection hood 9 through the gas blowing head 11 for collection. Subsequently, the control panel 19 slides on the air duct 10, and drives the tearable adhesive layer to rotate on the inner wall of the air duct of the hair dryer through the elastic ring 20, so as to adhere and remove the dust that has not been carried away by the air flow. Moreover, the movement of the control panel 19 on the air duct 10 can also drive the tearable adhesive layer to rotate and adhere to clean while walking inside the air duct of the hair dryer, adapting to the length of the air duct of the hair dryer and increasing the cleaning area.

[0037] A filter screen 14 is arranged inside the dust collection hood 9. A hollow collection ring 15 is fixedly installed on the air duct 10. A cleaning rod 16 is fixedly installed on the outer wall of the collection ring 15. One end of the cleaning rod 16 is attached to the filter screen 14, and the cleaning rod 16 is provided with an opening.

[0038] When the dust in the air duct of the hair dryer is blown into the interior of the dust collection hood 9 by the gas blowing of the blowing head 11, the provided filter screen 14 can block the dust at this time. At this time, by controlling the rotation of the collection ring 15 and the cleaning rod 16, the dust blocked on the filter screen 14 is scraped off through the opening on the cleaning rod 16, and then enters the inner cavity of the collection ring 15 through the cleaning rod 16, effectively solving the problem of dust accumulation reducing the air flow rate and improving the gas flow efficiency.

[0039] The air flow conveying assembly includes an air pump 5, a positive pressure pipe 7 and a negative pressure pipe 6. The air pump 5 is fixedly installed on the placement table 4. Both the positive pressure pipe 7 and the negative pressure pipe 6 are connected to the air pump 5. The other end of the positive pressure pipe 7 is communicated with the air duct 10, and the other end of the negative pressure pipe 6 extends into the interior of the dust collection hood 9.

[0040] By starting the air pump 5, the gas can be conveyed to the inner wall of the air duct 10, and cooperate with the blowing head 11 to blow the residual dust inside the air duct of the hair dryer into the interior of the dust collection hood 9 for collection. By removing the dust inside the air duct of the hair dryer, it is possible to solve the problem of carbon compound formation of dust at high temperature, reduce the influence on the air flow, and reduce extra noise.

[0041] As a preferred embodiment of the present invention, the control panel 19 is hollow. A moving ring 25 is fixedly installed at the central position of the control panel 19 through a connecting rod. The air duct 10 is rotatably installed on the inner wall of the dust collection hood 9. A reciprocating thread groove is provided on the outer wall of the air duct 10. The moving ring 25 is threadedly connected to the air duct 10.

[0042] There is a space between the control panel 19 and the moving ring 25 for the airflow to drive the dust debris through and smoothly enter the interior of the dust collection cover 9. When it is necessary to clean the inner wall of the hair dryer barrel, first set the dust collection cover 9 on the opening of the hair dryer barrel. Subsequently, by starting the air pump 5, the gas is sent into the interior of the spray head 11 through the air pipe 10, and the dust debris is blown into the interior of the dust collection cover 9 through the airflow to complete the collection. By controlling the rotation of the air pipe 10 and with the cooperation of the reciprocating thread groove, the moving ring 25 drives the control panel 19 to reciprocally slide along the outer wall of the air pipe 10. At this time, by rotating the elastic ring 20, the tearable adhesive layer is driven to rotate on the inner wall of the hair dryer barrel, and the dust debris not carried away by the airflow can be adhered and removed. By combining with airflow dust removal, the cleaning effect of the inner barrel of the hair dryer is further improved, and the actual use effect of the hair dryer is further improved.

[0043] As a preferred embodiment of the present invention, an activity groove 21 is provided on the inner wall of the control panel 19, and the elastic ring 20 is installed inside the activity groove 21 through a guide rod. A plurality of pressing balls 27 for pressing the elastic ring 20 are arranged inside the control panel 19.

[0044] The width of the activity groove 21 is greater than the diameter of the guide rod. Therefore, in the static state, the elastic ring 20 will be in a drooping state under the action of gravity. At this time, the elastic ring 20 will drive the tearable adhesive layer to fit the bottom end of the inner wall of the hair dryer barrel, and at the same time, it will also adhere and clean a part of the bottom end of the inner wall of the hair dryer barrel. At this time, if a plurality of pressing balls 27 rotate inside the control panel 19, under the action of centrifugal force, a plurality of pressing balls 27 will rotate around the inner circumference of the control panel 19 while closely adhering to the inner wall of the elastic ring 20, and will also drive the elastic ring 20 and the tearable adhesive layer to fit the inner wall of the hair dryer barrel under the action of centrifugal force. Therefore, when a plurality of pressing balls 27 rotate in a circle, the tearable adhesive layer can be driven to clean the inner wall of the hair dryer barrel in a circle. When the adhesion is saturated, it can be simply torn off.

[0045] As a preferred embodiment of the present invention, a turntable 22 is rotatably installed inside the control panel 19. A positioning ring 23 is fixedly connected to the side wall of the turntable 22 through a positioning rod. The positioning ring 23 is slidably installed on the outer wall of the air pipe 10. A plurality of partition plates 26 are fixedly installed on the outer wall of the turntable 22, and a pressing ball 27 is arranged between every two partition plates 26.

[0046] The positioning ring 23 and the air duct 10 are matched by positioning blocks and positioning grooves to limit the movement track of the positioning ring 23, so that the positioning ring 23 can only slide on the outer wall of the air duct 10 and cannot rotate. Therefore, when the air duct 10 rotates, the positioning ring 23 can be driven to rotate simultaneously. Under the action of the positioning rod, the positioning ring 23 will drive the turntable 22 to rotate together. Since the turntable 22 is rotatably installed inside the control panel 19, when the control panel 19 reciprocates on the air duct 10, the turntable 22 will also be driven to reciprocate synchronously.

[0047] When the air duct 10 drives the turntable 22 to rotate, the turntable 22 will drive a plurality of partition plates 26 to rotate synchronously, and drive a plurality of pressing balls 27 to rotate simultaneously. Under the action of centrifugal force, the pressing balls 27 will slide in a direction away from the turntable 22 and press against the inner wall of the elastic ring 20.

[0048] The pressing balls 27 are not arranged circumferentially, and only part of them are arranged outside the turntable 22. Therefore, when the turntable 22 rotates, these pressing balls 27 will press against the inner wall of the elastic ring 20 in sequence, so that the elastic ring 20 drives the tearable adhesive layer to be in an eccentric state inside the control panel 19, which can adapt to hair dryer barrels with more inner diameters.

[0049] As a preferred embodiment of the present invention, a dust collection box 8 is fixedly installed at the bottom end of the dust collection hood 9, a dust suction cylinder 32 is fixedly installed inside the dust collection hood 9, a piston 24 is slidably installed inside the dust suction cylinder 32, a dust suction pipe 18 and a dust delivery pipe 17 are arranged on the dust suction cylinder 32, the other end of the dust suction pipe 18 extends into the inside of the collection ring 15, the other end of the dust delivery pipe 17 extends into the inside of the dust collection box 8, and one-way valves are arranged on both the dust delivery pipe 17 and the dust suction pipe 18.

[0050] The one-way valve arranged on the dust delivery pipe 17 only allows the flow from the dust suction cylinder 32 to the inside of the dust collection box 8, and the one-way valve arranged on the dust suction pipe 18 only allows the flow from the collection ring 15 to the dust suction cylinder 32.

[0051] When the gas jet of the jet head 11 blows the dust and debris inside the hair dryer barrel into the inside of the dust collection hood 9, the provided filter screen 14 can block the dust and debris. By controlling the rotation of the collection ring 15 and the cleaning rod 16, the dust blocked on the filter screen 14 is scraped off through the opening on the cleaning rod 16, and then enters the inner cavity of the collection ring 15 through the cleaning rod 16. At this time, the piston 24 slides upward in the dust suction cylinder 32, and the dust and debris entering the collection ring 15 can be sucked into the inside of the dust suction cylinder 32 through the dust suction pipe 18. Then, by sliding the piston 24 downward in the dust suction cylinder 32, the dust and debris sucked into the dust suction cylinder 32 can be discharged into the inside of the dust collection box 8 through the dust delivery pipe 17 for subsequent treatment.

[0052] One end of the air duct 10 away from the injection head 11 is rotatably installed with an air transmission cylinder 12. One end of the air transmission cylinder 12 is fixedly connected to the outer wall of the dust collection hood 9. An impeller 13 is installed inside the air transmission cylinder 12. The impeller 13 is fixedly connected to the inner wall of the air duct 10 through a rotating shaft. One end of the positive pressure pipe 7 extends into the air transmission cylinder 12.

[0053] When the air pump 5 is started, gas is transported into the air duct 10. At this time, the air flow will first enter the inner cavity of the air transmission cylinder 12 and blow the impeller 13, so that the impeller 13 drives the air duct 10 to rotate through the rotating shaft.

[0054] A sliding rod 31 is slidably installed inside the dust suction cylinder 32. One end of the sliding rod 31 is fixedly connected to the piston 24. A reciprocating lead screw 30 is threadedly connected inside the sliding rod 31. The top end of the reciprocating lead screw 30 is fixedly installed with a transmission gear 29. An active gear 28 meshing with the transmission gear 29 is fixedly installed on the outer wall of the collection ring 15.

[0055] When the air duct 10 rotates, it will drive the collection ring 15 to rotate at the same time, so that the active gear 28 drives the transmission gear 29 to rotate. When the reciprocating lead screw 30 rotates, it will drive the sliding rod 31 and the piston 24 to slide up and down reciprocally inside the dust suction cylinder 32, and cooperate with the air supply pipe 17 and the dust suction pipe 18 to send the dust and debris in the collection ring 15 into the inner cavity of the dust collection box 8 for collection.

[0056] Working principle: When the air pump 5 is started, gas is transported into the air duct 10. The dust and debris inside the blower air duct are blown into the dust collection hood 9 for collection through the gas injection of the injection head 11. When the air flow enters the air transmission cylinder 12, it will blow the impeller 13, so that the impeller 13 drives the air duct 10 to rotate through the rotating shaft. Under the cooperation of the reciprocating thread groove, the moving ring 25 drives the control disk 19 to slide reciprocally along the outer wall of the air duct 10. At the same time, the positioning ring 23 drives the turntable 22 to rotate. The turntable 22 will drive a plurality of partition plates 26 to rotate synchronously, and drive a plurality of pressing balls 27 to rotate at the same time. Under the action of centrifugal force, while the plurality of pressing balls 27 rotate around the inner circumference of the control disk 19, they will closely adhere to the inner wall of the elastic ring 20, so that the elastic ring 20 can drive the tearable adhesive layer to circularly adhere to and clean the inner wall of the blower air duct. The air duct 10 will also drive the collection ring 15 and the cleaning rod 16 to rotate, scrape off the dust blocked on the filter screen 14, and send it into the inner cavity of the collection ring 15. The collection ring 15 drives the active gear 28 to rotate, drives the transmission gear 29 to rotate, and the reciprocating lead screw 30 will drive the sliding rod 31 and the piston 24 to slide up and down reciprocally inside the dust suction cylinder 32, and cooperate with the air supply pipe 17 and the dust suction pipe 18 to send the dust and debris in the collection ring 15 into the inner cavity of the dust collection box 8 for collection. By removing the dust and debris inside the blower air duct, it is possible to solve the problem of carbon compound formation of dust and debris at high temperatures, reduce the influence on the air flow, and reduce additional noise.

[0057] The above front, rear, left, right, top, and bottom are all based on the Figure 1 accompanying drawings of the specification. Taking the perspective of the person observing as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0059] The above has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An internal air duct processing device for a hair dryer, comprising a workbench (1), on which a clamping component (2) for clamping the air duct of the hair dryer and a grinding component (3) for grinding the inside of the air duct of the hair dryer are provided; It is characterized in that: An installation table (4) is fixedly installed on the grinding component (3), and a dust collection hood (9) for sleeving outside the air duct of the hair dryer is fixedly installed on the installation table (4). One end of the dust collection hood (9) is open, and an air duct (10) is arranged inside the dust collection hood (9). One end of the air duct (10) is fixedly installed with a spray head (11); An air flow conveying assembly is arranged on the installation table (4) for making the inside of the dust collection hood (9) in negative pressure and for making the inside of the air duct (10) in positive pressure; A control disc (19) is slidably installed on the air duct (10), and an elastic ring (20) is eccentrically rotatably installed on the control disc (19). A tearable adhesive layer for adhering dust is arranged on the outer wall of the elastic ring (20); A filter screen (14) is arranged inside the dust collection hood (9). A hollow collection ring (15) is fixedly installed on the air duct (10). A cleaning rod (16) is fixedly installed on the outer wall of the collection ring (15). One end of the cleaning rod (16) is in contact with the filter screen (14), and the cleaning rod (16) is open at one end.

2. The internal air duct processing device of a hair dryer according to claim 1, wherein: The air flow conveying assembly includes an air pump (5), a positive pressure pipe (7) and a negative pressure pipe (6). The air pump (5) is fixedly installed on the installation table (4). Both the positive pressure pipe (7) and the negative pressure pipe (6) are connected to the air pump (5). The other end of the positive pressure pipe (7) is communicated with the air duct (10), and the other end of the negative pressure pipe (6) extends into the inside of the dust collection hood (9).

3. The internal air duct processing device of a hair dryer according to claim 2, wherein: The control disc (19) is hollow. A moving ring (25) is fixedly installed at the central position of the control disc (19) through a connecting rod. The air duct (10) is rotatably installed on the inner wall of the dust collection hood (9). A reciprocating thread groove is formed on the outer wall of the air duct (10). The moving ring (25) is in threaded connection with the air duct (10).

4. The internal air duct processing device of a hair dryer according to claim 3, characterized in that: An activity groove (21) is formed on the inner wall of the control disc (19). The elastic ring (20) is installed inside the activity groove (21) through a guide rod. A plurality of pressing balls (27) for pressing the elastic ring (20) are arranged inside the control disc (19).

5. The internal air duct processing device of a hair dryer according to claim 4, characterized in that: A turntable (22) is rotatably installed inside the control disc (19). A positioning ring (23) is fixedly connected to the side wall of the turntable (22) through a positioning rod. The positioning ring (23) is slidably installed on the outer wall of the air duct (10). A plurality of partition plates (26) are fixedly installed on the outer wall of the turntable (22). A pressing ball (27) is arranged between every two partition plates (26).

6. The internal air duct processing device of a hair dryer according to claim 5, characterized in that: A dust collection box (8) is fixedly installed at the bottom end of the dust collection hood (9). A dust suction cylinder (32) is fixedly installed inside the dust collection hood (9). A piston (24) is slidably installed inside the dust suction cylinder (32). A dust suction pipe (18) and a dust delivery pipe (17) are provided on the dust suction cylinder (32). The other end of the dust suction pipe (18) extends into the inside of the collection ring (15). The other end of the dust delivery pipe (17) extends into the inside of the dust collection box (8). One-way valves are provided on both the dust delivery pipe (17) and the dust suction pipe (18).

7. The internal air duct processing device of a hair dryer according to claim 6, characterized in that: A slide bar (31) is slidably installed inside the dust suction cylinder (32). One end of the slide bar (31) is fixedly connected to the piston (24). A reciprocating lead screw (30) is connected to the inside of the slide bar (31) by means of a thread. A transmission gear (29) is fixedly installed at the top end of the reciprocating lead screw (30). A driving gear (28) meshing with the transmission gear (29) is fixedly installed on the outer wall of the collection ring (15).

8. The internal air duct processing device of a hair dryer according to claim 7, characterized in that: One end of the air duct (10) far from the spray head (11) is rotatably installed with an air transmission cylinder (12). One end of the air transmission cylinder (12) is fixedly connected to the outer wall of the dust collection hood (9). An impeller (13) is installed inside the air transmission cylinder (12). The impeller (13) is fixedly connected to the inner wall of the air duct (10) through a rotating shaft. One end of the positive pressure pipe (7) extends into the inside of the air transmission cylinder (12).

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