A powder inhaler with self-cleaning function

Abstract

The present invention discloses a powder inhaler with a self-cleaning function, which relates to the technical field of inhalation devices and comprises: a housing, an extrusion assembly, and a conveying assembly. The top of the housing is provided with a drug inlet, the extrusion assembly is located above the conveying assembly, the extrusion assembly comprises: an extrusion chamber and an extrusion plate, the conveying assembly comprises: a conveying chamber and a grinding ring, and the conveying chamber is provided with an output port. When a patient rotates the extrusion assembly, the extrusion plate squeezes the pills, causing the pills to be squeezed into small pieces, which are then moved to the conveying chamber through the extrusion chamber. After the small pills are conveyed to the conveying chamber, the patient rotates the grinding ring, causing the grinding ring to grind the small pills. Finally, the patient inhales air through the cavity, and the powder is then discharged through the output port, thereby achieving the inhalation of the powder. After the pills are ground into powder, they are convenient for the patient to inhale, avoiding the pills from clogging the patient's airway and causing safety hazards. In addition, the powdered medicine is more easily absorbed.

Description

Technical Field

[0001] The invention relates to the technical field of inhalation devices, in particular to a powder inhaler with a self-cleaning function. Background Art

[0002] Powder inhalers are an important component of the pulmonary drug delivery system. Due to its large absorption area and lack of hepatic first-pass effect, the pulmonary drug delivery route has attracted widespread attention in the field of drug delivery system research and development. Its clinical application has also evolved from traditional local treatment of asthma to the treatment of systemic diseases. Unlike general drug delivery routes, pulmonary drug delivery requires the use of a specific inhalation device to disperse, atomize, and deliver the drug to the lungs. The inhalation device plays a key role in the pulmonary drug delivery system.

[0003] Existing inhalers usually need to be disassembled for cleaning. During the process of pill inhalation, some pills will adhere to the inside of the inhaler, resulting in pill waste and affecting the cleanliness of the inside of the inhaler. Summary of the Invention

[0004] The object of the present invention is to provide a powder inhaler with a self-cleaning function to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A powder inhaler with a self-cleaning function comprises: a shell, an extrusion assembly and a conveying assembly are arranged in the shell, a medicine inlet is arranged on the top of the shell, the extrusion assembly is located above the conveying assembly, the extrusion assembly comprises: an extrusion chamber, a plurality of extrusion plates are arranged in the extrusion chamber, the conveying assembly comprises: a conveying chamber, a grinding ring is arranged in the conveying chamber, the grinding ring is rotatably connected to the conveying chamber, and an output port is arranged on the conveying chamber.

[0007] The patient delivers the pill into the shell through the medicine inlet. When the pill enters the extrusion chamber, the patient rotates the extrusion assembly to move several extrusion plates to the opposite side, and then the extrusion plates squeeze the pill, so that the pill is squeezed into small pieces, and then moves to the delivery chamber through the extrusion chamber. When the small pills are delivered to the delivery chamber, the patient rotates the grinding ring again to make the grinding ring grind the small pills, so that the small pills are crushed into powder, and finally the patient inhales through the cavity, and the powder is immediately discharged through the output port, thereby realizing the inhalation of the powder. After the pills are ground into powder, it is convenient for the patient to inhale, avoiding the pills from clogging the patient's airway and causing safety hazards, and the powdered medicine is easier to absorb.

[0008] Preferably, a rotating ring is provided on the side wall of the extrusion chamber, a plurality of worms are provided on the side of the rotating ring close to the extrusion chamber, a friction plate is provided on the side of the rotating ring close to the outer wall of the shell, the rotating ring is rotatably connected to the shell, a worm gear is provided on the side of the extrusion plate close to the rotating ring, the worm is meshed with the worm gear, and the worm gear is rotatably connected to the extrusion chamber.

[0009] Preferably, a cone thorn is provided at the bottom of the extrusion chamber, and the cone thorn is located at the center of the space surrounded by several extrusion plates. A diversion pipe is provided on the side of the cone thorn away from the extrusion chamber, and several input ports are provided on the side wall of the extrusion chamber, and the input ports are connected to the diversion pipe.

[0010] A powder inhaler with a self-cleaning function comprises: a shell, an extrusion assembly and a conveying assembly are arranged in the shell, a medicine inlet is arranged on the top of the shell, the extrusion assembly is located above the conveying assembly, the extrusion assembly comprises: an extrusion chamber, a plurality of extrusion plates are arranged in the extrusion chamber, the conveying assembly comprises: a conveying chamber, a grinding ring is arranged in the conveying chamber, the grinding ring is rotatably connected to the conveying chamber, and an output port is arranged on the conveying chamber.

[0011] The patient delivers the pill into the shell through the medicine inlet. When the pill enters the extrusion chamber, the patient rotates the extrusion assembly to move several extrusion plates to the opposite side, and then the extrusion plates squeeze the pill, so that the pill is squeezed into small pieces, and then moves to the delivery chamber through the extrusion chamber. When the small pills are delivered to the delivery chamber, the patient rotates the grinding ring again to make the grinding ring grind the small pills, so that the small pills are crushed into powder, and finally the patient inhales through the cavity, and the powder is immediately discharged through the output port, thereby realizing the inhalation of the powder. After the pills are ground into powder, it is convenient for the patient to inhale, avoiding the pills from clogging the patient's airway and causing safety hazards, and the powdered medicine is easier to absorb.

[0012] Preferably, a rotating ring is provided on the side wall of the extrusion chamber, a plurality of worms are provided on the side of the rotating ring close to the extrusion chamber, a friction plate is provided on the side of the rotating ring close to the outer wall of the shell, the rotating ring is rotatably connected to the shell, a worm gear is provided on the side of the extrusion plate close to the rotating ring, the worm is meshed with the worm gear, and the worm gear is rotatably connected to the extrusion chamber.

[0013] Preferably, a cone thorn is provided at the bottom of the extrusion chamber, and the cone thorn is located at the center of the space surrounded by several extrusion plates. A diversion pipe is provided on the side of the cone thorn away from the extrusion chamber, and several input ports are provided on the side wall of the extrusion chamber, and the input ports are connected to the diversion pipe.

[0014] When a capsule pill is inhaled, the capsule enters the extrusion chamber through the medicine inlet. At this time, the bottom side of the extrusion plate is closer to the cone thorn than the top side of the extrusion plate, so that the capsule is held up by several extrusion plates and does not contact the cone thorn. Then the patient rotates the rotating ring. When the rotating ring rotates, the worm is driven to rotate. When the worm rotates, it engages with the worm gear, so that the worm drives the worm gear to rotate, and when the worm gear rotates, it drives the extrusion plate to rotate. The top side of the extrusion plate rotates toward the side close to the cone thorn. During the rotation of the extrusion plate, the capsule is pushed to move, and the capsule moves toward the side close to the cone thorn. During the movement of the capsule, the bottom of the capsule is pierced by the cone thorn, but the pill in the capsule does not leak out at this time. When the extrusion plate moves to the maximum stroke, the tops of the extrusion plates contact and squeeze each other, and the bottom of the capsule is also at the bottom of the input port. Then, the pill moves toward the input port under the action of gravity, and is then transported to the shunt pipe through the input port.

[0015] When all the pills in the capsule are discharged, the patient rotates the rotating ring in the opposite direction, and the bottom side of the squeezing plate rotates toward the side close to the cone thorn, and then the squeezing plate pushes the capsule shell to move toward the side close to the drug inlet, and the capsule shell moves away from the cone thorn;

[0016] When a solid pill is inhaled, the solid pill enters the extrusion chamber through the medicine inlet. The patient rotates the rotating ring back and forth, causing the extrusion plate to rotate back and forth in the extrusion chamber, so that the extrusion plate and the cone thorns cooperate with each other to squeeze and puncture the solid pill, breaking the large solid pill into small pills, so that the small pills are discharged through the inlet.

[0017] When the extrusion plate rotates, the end faces of the extrusion plate will contact and collide with each other, generating vibration through the collision. The vibration is transmitted to the extrusion cavity, shaking off the pills attached to the extrusion cavity, the extrusion plate and the surface of the cone thorn, thereby avoiding pills remaining in the extrusion cavity and causing pill waste. At the same time, the extrusion cavity is cleaned and the cleanliness of the extrusion cavity is improved.

[0018] Preferably, a plurality of diversion chambers are provided in the delivery chamber, the diversion chambers are located at the bottom of the diversion tubes, the diversion chambers are communicated with the diversion tubes, and the diversion chambers correspond to the diversion tubes one by one.

[0019] Preferably, an output plate is provided on one side of the diversion cavity near the output port, the output plate is rotatably connected to the shell, a connecting port is provided on one side of the output plate near the edge, a vertical cavity is provided in the center of the output plate, the connecting port is connected to the vertical cavity through a pipe, and a grinding column is provided in the vertical cavity.

[0020] Preferably, the grinding ring is located at the bottom of the grinding column, and grinding grooves are provided on the side of the grinding ring opposite to the grinding column. A drop port is provided in the center of the grinding ring, and a rotating cavity is provided on the side of the grinding ring close to the outer wall of the shell. The grinding ring is provided with a plurality of blades on one side of the rotating cavity, and a plurality of air outlet holes are provided in the grinding ring.

[0021] Preferably, the output port includes an inner tube and an outer tube, the inner tube is connected to the delivery chamber, and the outer tube is connected to the rotation chamber.

[0022] Preferably, a plurality of fan blades are provided in the inner tube, and the fan blades are rotatably connected to the inner wall of the inner tube via a rotating rod.

[0023] Whether it is the pills in the capsule or the small pills broken into pieces by the solid pills, they are transported to the diversion pipe through the input port. The diversion pipe diverts the pills into several small portions. Then the pills are transported to the diversion cavity through the diversion pipe. Since there is only one connecting port on the output plate, the pills in the other diversion cavity are blocked by the output plate. The pills in the diversion cavity connected to the connecting port move toward the connecting port. Then the pills are transported to the vertical cavity through the pipe in the connecting port.

[0024] After the pills are delivered to the vertical cavity, the patient wraps the output port with his mouth and blows air into the output port. Since the output port is divided into an inner tube and an outer tube, a plurality of fan blades are provided in the inner tube. The fan blades rotate under the action of the blowing airflow and rotate toward the side close to the delivery cavity, so that the fan blades close the inner tube and the blown gas can only move toward the outer tube. The air is delivered to the rotating cavity through the outer tube, so that the air pushes the blades to rotate in the rotating cavity. The rotation of the blades drives the grinding ring to rotate at the same time. The grinding ring and the grinding column cooperate with each other to grind the pills in the vertical cavity. The pills are ground into powder, and part of the air is transported from the rotating chamber to the vertical chamber through the air outlet. The air then blows the powder, preventing it from remaining on the surface of the grinding ring and grinding column, thereby achieving a self-cleaning effect and avoiding waste of powder. The air also drives the powder to start, so that the powder is transported to the delivery chamber through the drop port. Then the patient inhales, and the fan blades rotate to the side close to the output port under the action of suction, and the inner tube is connected to the output port. The powder is then transported to the patient's mouth through the inner tube.

[0025] After the pill in one of the diversion chambers is inhaled, the patient rotates the output plate to move the connection port to the next diversion chamber, and then inhales small amounts multiple times to better promote drug absorption, thereby improving drug absorption efficiency.

[0026] By disassembling the shell, the interior of the shell can be deeply cleaned to ensure that the medicine is not affected by contamination.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. By rotating the rotating ring, the rotating ring drives the extrusion plate to deflect. When the extrusion plate rotates, it drives the capsule pills or solid pills to move to the side close to the cone thorns, and then the extrusion plate and the cone thorns cooperate with each other to puncture or crush the pills, so that small pieces of pills enter the diverter tube 25 through the input port 26. When the extrusion plates rotate, they contact and collide with each other, and the vibration generated by the collision is transmitted to the extrusion chamber, thereby avoiding pills remaining in the extrusion chamber and causing pill waste. At the same time, the extrusion chamber is cleaned, thereby improving the cleanliness of the extrusion chamber.

[0029] 2. Through the patient's own blowing and inhalation, the blown gas can only move toward the outer tube, and the air is transported to the rotating chamber through the outer tube, so that the air pushes the blades to rotate in the rotating chamber. The rotation of the blades also drives the grinding ring to rotate. The grinding ring and the grinding column cooperate with each other to grind the pills in the vertical chamber into powder, and part of the air is transported from the rotating chamber to the vertical chamber through the air outlet, and then the air will blow the powder, avoiding the powder remaining on the surface of the grinding ring and the grinding column, thereby achieving the effect of self-cleaning and avoiding the waste of powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of the present invention;

[0031] Figure 2 Schematic diagram of the internal structure of the present invention;

[0032] Figure 3 This is an exploded view of the cone, shunt tube, and shunt cavity output plate;

[0033] Figure 4 It is a structural diagram of the grinding ring and the output port;

[0034] Figure 5 This is a front view of the grinding ring and the output port;

[0035] Figure 6 It is a structural diagram of the rotating ring and the extrusion plate;

[0036] Figure 7 Schematic diagram of the structure of the grinding ring;

[0037] Figure 8 It is a structural diagram when the fan blades are in the closed state.

[0038] In the figure: 1, housing; 11, medicine inlet; 12, medicine outlet; 13, inner tube; 14, outer tube; 15, fan blades;

[0039] 2. Extrusion assembly; 21. Extrusion chamber; 22. Extrusion plate; 221. Worm gear; 23. Rotating ring; 231. Worm; 24. Cone; 25. Diverter pipe; 26. Input port;

[0040] 3. Conveying assembly; 31. Conveying chamber; 32. Grinding ring; 33. Diverter chamber; 34. Output plate; 341. Connecting port; 342. Vertical chamber; 343. Grinding column; 35. Rotating chamber; 321. Blades; 322. Air outlet. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Example: Figures 1-8 As shown, the present invention provides a technical solution for a powder inhaler with a self-cleaning function, comprising: a housing 1, wherein an extrusion assembly 2 and a conveying assembly 3 are disposed in the housing 1, a drug inlet 11 is disposed at the top of the housing 1, the extrusion assembly 2 is located above the conveying assembly 3, the extrusion assembly 2 comprises: an extrusion chamber 21, wherein a plurality of extrusion plates 22 are disposed in the extrusion chamber 21, the conveying assembly 3 comprises: a conveying chamber 31, wherein a grinding ring 32 is disposed in the conveying chamber 31, the grinding ring 32 is rotatably connected to the conveying chamber 31, and an output port 12 is disposed on the conveying chamber 31.

[0043] As a specific embodiment of the present invention, a rotating ring 23 is provided on the side wall of the extrusion chamber 21, and several worms 231 are provided on the side of the rotating ring 23 close to the extrusion chamber 21. A friction plate is provided on the side of the rotating ring 23 close to the outer wall of the shell 1. The rotating ring 23 is rotatably connected to the shell 1, and a worm gear 221 is provided on the side of the extrusion plate 22 close to the rotating ring 23. The worm 231 is engaged with the worm gear 221, and the worm gear 221 is rotatably connected to the extrusion chamber 21.

[0044] As a specific embodiment of the present invention, a conical thorn 24 is provided at the bottom of the extrusion chamber 21, and the conical thorn 24 is located at the center of the space surrounded by several extrusion plates 22. A shunt pipe 25 is provided on the side of the conical thorn 24 away from the extrusion chamber 21, and several input ports 26 are provided on the side wall of the extrusion chamber 21 of the conical thorn 24, and the input ports 26 are connected to the shunt pipe 25.

[0045] As a specific embodiment of the present invention, a plurality of diversion chambers 33 are provided in the delivery chamber 31 . The diversion chambers 33 are located at the bottom of the diversion tube 25 . The diversion chambers 33 are connected to the diversion tube 25 , and the diversion chambers 33 correspond to the diversion tube 25 one by one.

[0046] As a specific embodiment of the present invention, an output plate 34 is provided on the side of the diversion chamber 33 close to the output port 12, and the output plate 34 is rotatably connected to the shell 1. A connecting port 341 is provided on the side of the output plate 34 close to the edge, and a vertical cavity 342 is provided in the center of the output plate 34. The connecting port 341 is connected to the vertical cavity 342 through a pipe, and a grinding column 343 is provided in the vertical cavity 342.

[0047] As a specific embodiment of the present invention, the grinding ring 32 is located at the bottom of the grinding column 343, and the side of the grinding ring 32 opposite to the grinding column 343 is provided with grinding grooves. A drop port is provided in the center of the grinding ring 32, and a rotating chamber 35 is provided on the side of the grinding ring 32 close to the outer wall of the shell 1. The grinding ring 32 is provided with a plurality of blades 321 on the side of the rotating chamber 35, and a plurality of air outlet holes 322 are provided in the grinding ring 32.

[0048] As a specific embodiment of the present invention, the output port 12 includes an inner tube 13 and an outer tube 14 . The inner tube 13 is connected to the delivery cavity 31 , and the outer tube 14 is connected to the rotation cavity 35 .

[0049] As a specific embodiment of the present invention, a plurality of fan blades 15 are provided in the inner tube 13 , and the fan blades 15 are rotatably connected to the inner wall of the inner tube 13 via a rotating rod.

[0050] Working principle of the present invention:

[0051] When a capsule pill is inhaled, the capsule enters the extrusion chamber 21 through the medicine inlet 11. At this time, the bottom side of the extrusion plate 22 is closer to the cone thorn 24 than the top side of the extrusion plate 22, so that the capsule is held by several extrusion plates 22 and does not contact the cone thorn 24. Then the patient rotates the rotating ring 23, and the rotating ring 23 rotates to drive the worm 231 to rotate. When the worm 231 rotates, it engages with the worm gear 221, so that the worm 231 drives the worm gear 221 to rotate, and when the worm gear 221 rotates, it drives the extrusion plate 22 to rotate, and the extrusion The top side of the plate 22 rotates toward the side close to the cone thorn 24. During the rotation of the squeezing plate 22, the capsule is pushed to move, and the capsule moves toward the side close to the cone thorn 24. During the movement of the capsule, the bottom of the capsule is pierced by the cone thorn 24, but the pills in the capsule do not leak out at this time. When the squeezing plate 22 moves to the maximum stroke, the tops of the squeezing plates 22 contact and squeeze each other, and the bottom of the capsule is also located at the bottom of the input port 26. Then, the pill moves toward the input port 26 under the action of gravity, and is then transported to the shunt pipe 25 through the input port 26.

[0052] When all the pills in the capsule are discharged, the patient rotates the rotating ring 23 in the opposite direction, and the bottom side of the squeezing plate 22 rotates toward the side close to the spike 24, and then the squeezing plate 22 pushes the capsule shell to move toward the side close to the drug inlet 11, and the capsule shell moves away from the spike 24;

[0053] When a solid pill is inhaled, the solid pill enters the extrusion chamber 21 through the medicine inlet 11. The patient rotates the rotating ring 23 back and forth, causing the extrusion plate 22 to rotate back and forth in the extrusion chamber 21. The extrusion plate 22 cooperates with the cone thorns 24 to squeeze and puncture the solid pill, breaking the large solid pill into small pills, and the small pills are discharged through the input port 26.

[0054] During the rotation of the extrusion plate 22, the end faces of the extrusion plate 22 will contact and collide with each other, generating vibrations through the collision. The vibrations are transmitted to the extrusion cavity 21, shaking off the pills attached to the extrusion cavity 21, the extrusion plate 22 and the surface of the spike 24, thereby avoiding pills remaining in the extrusion cavity 21 and causing pill waste, and also cleaning the extrusion cavity 21;

[0055] Whether it is a pill in a capsule or a small pill formed by crushing a solid pill, the pills are transported to the diverter pipe 25 through the input port 26. The diverter pipe 25 diverts the pills into several small portions. The pills are then transported to the diverter chamber 33 through the diverter pipe 25. Since the output plate 34 is provided with only one connecting port 341, the pills in the diverter chamber 33 are blocked by the output plate 34. The pills in the diverter chamber 33 connected to the connecting port 341 move toward the connecting port 341. The pills are then transported to the vertical chamber 342 through the pipe in the connecting port 341.

[0056] After the pills are delivered to the vertical cavity 342, the patient wraps the output port 12 with his mouth and blows air into the output port 12. Since the output port 12 is divided into an inner tube 13 and an outer tube 14, a plurality of blades 15 are provided in the inner tube 13. The blades 15 rotate under the action of the blowing airflow, and the blades 15 rotate toward the side close to the delivery cavity 31, so that the plurality of blades 15 close the inner tube 13, and the blown gas can only move toward the outer tube 14. The air is delivered to the rotating cavity 35 through the outer tube 14, so that the air pushes the blades 321 to rotate in the rotating cavity 35. The rotation of the blades 321 drives the grinding ring 32 to rotate at the same time. The grinding ring 32 cooperates with the grinding column 343 to rotate. The pills in the vertical cavity 342 are ground into powder, and a portion of air is transported from the rotating cavity 35 into the vertical cavity 342 through the air outlet 322. The air then blows the powder, preventing it from remaining on the surfaces of the grinding ring 32 and the grinding column 343, thereby achieving a self-cleaning effect and avoiding waste of powder. The air also propels the powder to start, causing it to be transported to the transport cavity 31 through the drop port. The patient then inhales, and the fan blades 15 rotate toward the side closer to the outlet 12 under the action of suction, thereby connecting the inner tube 13 to the outlet 12, and the powder is then transported to the patient's mouth through the inner tube 13.

[0057] After the pill in one of the diversion chambers 33 is inhaled, the patient rotates the output plate 34 to rotate the connection port 341 toward the next diversion chamber 33, thereby promoting better absorption of the drug through multiple small inhalations.

[0058] By disassembling the shell 1 , the interior of the shell 1 can be deeply cleaned, thereby ensuring that the medicine is not affected by contamination.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A powder inhaler with a self-cleaning function, characterized in that: include: A shell (1), wherein an extrusion assembly (2) and a conveying assembly (3) are provided in the shell (1), a medicine inlet (11) is provided at the top of the shell (1), the extrusion assembly (2) is located above the conveying assembly (3), the extrusion assembly (2) comprises: an extrusion chamber (21), a plurality of extrusion plates (22) are provided in the extrusion chamber (21), the conveying assembly (3) comprises: a conveying chamber (31), a grinding ring (32) is provided in the conveying chamber (31), the grinding ring (32) is rotatably connected to the conveying chamber (31), and an output port (12) is provided on the conveying chamber (31); A rotating ring (23) is provided on the side wall of the extrusion chamber (21), and a plurality of worms (231) are provided on the side of the rotating ring (23) close to the extrusion chamber (21). A worm wheel (221) is provided on the side of the extrusion plate (22) close to the rotating ring (23). The rotating ring (23) is rotatably connected to the housing (1), and the worm (231) is meshed with the worm wheel (221). The worm wheel (221) is rotatably connected to the extrusion chamber (21). When the rotating ring (23) rotates, the worm (231) is driven to rotate. When the worm (231) rotates, The worm (231) is meshed with the worm wheel (221), so that the worm (231) drives the worm wheel (221) to rotate, and when the worm wheel (221) rotates, the extrusion plate (22) is driven to rotate. During the rotation of the extrusion plate (22), the end faces of the extrusion plate (22) contact and collide with each other, generating vibration through the collision. The bottom of the extrusion chamber (21) is provided with a cone thorn (24), and a shunt pipe (25) is provided on the side of the cone thorn (24) away from the extrusion chamber (21). The cone thorn (24) is located on the side wall of the extrusion chamber (21) and is provided with a plurality of input ports (26).

2. The powder inhaler with self-cleaning function according to claim 1, characterized in that: A friction plate is provided on one side of the rotating ring (23) close to the outer wall of the housing (1).

3. The powder inhaler with self-cleaning function according to claim 2, characterized in that: The cone thorn (24) is located at the center of a space surrounded by a plurality of extrusion plates (22), and the input port (26) is communicated with the shunt pipe (25).

4. The powder inhaler with self-cleaning function according to claim 3, characterized in that: A plurality of diversion chambers (33) are provided in the delivery chamber (31), and the diversion chambers (33) are located at the bottom of the diversion tube (25). The diversion chambers (33) are communicated with the diversion tube (25), and the diversion chambers (33) correspond to the diversion tube (25) one by one.

5. The powder inhaler with self-cleaning function according to claim 4, characterized in that: An output plate (34) is provided on one side of the diversion cavity (33) close to the output port (12), the output plate (34) is rotatably connected to the housing (1), a connection port (341) is provided on one side of the output plate (34) close to the edge, a vertical cavity (342) is provided at the center of the output plate (34), the connection port (341) is connected to the vertical cavity (342) through a pipe, and a grinding column (343) is provided in the vertical cavity (342).

6. The powder inhaler with self-cleaning function according to claim 5, characterized in that: The grinding ring (32) is located at the bottom of the grinding column (343); the grinding ring (32) is provided with grinding grooves on the side opposite to the grinding column (343); a drop opening is provided at the center of the grinding ring (32); a rotating cavity (35) is provided on the side of the grinding ring (32) close to the outer wall of the shell (1); a plurality of blades (321) are provided on the side of the grinding ring (32) located in the rotating cavity (35); and a plurality of air outlet holes (322) are provided in the grinding ring (32).

7. The powder inhaler with self-cleaning function according to claim 6, characterized in that: The output port (12) comprises an inner tube (13) and an outer tube (14), wherein the inner tube (13) is communicated with the delivery chamber (31), and the outer tube (14) is communicated with the rotation chamber (35).

8. The powder inhaler with self-cleaning function according to claim 7, characterized in that: A plurality of fan blades (15) are provided in the inner tube (13), and the fan blades (15) are rotatably connected to the inner wall of the inner tube (13) via a rotating rod.

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