Pneumatic turbine cell

Abstract

The utility model relates to medical instrument technical field especially is involved in a kind of pneumatic turbine mobile phone.The utility model provides a pneumatic turbine mobile phone, comprising: head shell and spray pipe;The inside of head shell is provided with cavity, the inner wall of cavity is provided with air inlet inclined hole and back gas hole, and along the hole orifice oblique direction of air inlet inclined hole, the hole orifice of air inlet inclined hole has hole orifice bottom end and hole orifice top end;Spray pipe is inserted in air inlet inclined hole, and the gas injection end of spray pipe is located between hole orifice bottom end and hole orifice top end. By being provided with spray pipe in air inlet inclined hole, and the gas injection end of spray pipe is located between hole orifice bottom end and hole orifice top end. Make the vast majority of incident airflow all act on the blade of turbine, not only make turbine obtain higher tangential component velocity and torque, but also reduce the kinetic energy loss of incident airflow, so that incident airflow can completely and concentratedly work on turbine blade, improve the performance and efficiency of pneumatic turbine mobile phone.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a pneumatic turbine mobile phone. Background Technology

[0002] High-speed air turbine handpieces are essential diagnostic and treatment instruments in dental clinical applications. They are primarily used by dentists to hold dental burs for drilling, grinding, and cutting tooth structures. A high-speed air turbine handpiece is an active medical device powered by clean compressed air. Compressed air is delivered into the air pipes inside the handpiece via a connector, driving a turbine within the head housing to rotate. This, in turn, drives the handpiece and burs to achieve high-speed operation, reaching speeds of 300,000 to 600,000 rpm.

[0003] Therefore, the rotational speed and torque of a high-speed dental handpiece are the main technical indicators reflecting its performance. However, under constant air supply pressure and flow rate (i.e., constant input power), high rotational speed generally means low torque, and high torque means low rotational speed. A high-speed handpiece not only needs to be comfortable during high-speed operation (i.e., "the higher the rotational speed, the smoother the operation"), but also needs to ensure efficiency in torque output (i.e., "powerful" in clinical use). Therefore, effectively balancing or matching these two aspects is of great clinical significance for improving the performance and ensuring the efficiency of a high-speed handpiece.

[0004] Because the air inlet and outlet ports within the turbine housing are essentially on the same arc working surface and cannot be isolated, turbulence or eddies inevitably occur when the inlet and outlet gas pressures differ, leading to mixing interference and impact. Furthermore, due to the angle, diameter, and position of the air inlet, the outlet of the driving air inlet forms a slanted elongated hole with the inner wall of the turbine housing's circumferential cavity. When the incoming airflow passes through this elongated injection hole, it expands due to its rapid increase in specific volume. However, due to the constraint and expansion of the hole wall, the injection angle is deflected. Part of the incoming airflow acts on the gap between the turbine and the inner wall of the turbine housing, and part acts on the radial velocity component of the turbine. This results in significant kinetic energy loss of the incoming driving air, preventing it from fully and concentratedly performing work on the turbine blades, thus affecting performance and efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic turbine handpiece to solve the technical problems of turbulence or eddies generated when the inlet and outlet gas pressures are different, resulting in mixing interference and influence, and the large loss of kinetic energy of the incident driving gas, which prevents the incident driving airflow from doing work on the turbine blades completely and in a concentrated manner, thus affecting performance and efficiency.

[0006] In a first aspect, this utility model provides a pneumatic turbine mobile phone, comprising: a head shell and a nozzle;

[0007] The head shell has a cavity inside, and the inner wall of the cavity has an air inlet oblique hole and an air return hole. The air inlet oblique hole has a bottom end and a top end along the inclined direction of the opening of the air inlet oblique hole.

[0008] The nozzle is inserted into the air inlet oblique hole, and the jet end of the nozzle is located between the bottom end and the top end of the orifice.

[0009] In an optional embodiment, the nozzle is a Laval nozzle.

[0010] In an optional embodiment, the inner wall of the cavity is provided with a recessed portion;

[0011] Both the air inlet oblique hole and the air return hole are located within the recessed portion.

[0012] In an alternative implementation, it also includes a movement, a turbine, a handle, and a connector;

[0013] Both the movement and the turbine are disposed within the cavity, and the turbine is disposed on the shaft of the movement;

[0014] The head end of the handle is connected to the neck of the head shell, and the tail end of the handle is connected to the connector.

[0015] The handle is provided with at least an air inlet pipe and a water inlet pipe. The head shell is provided with a water spray nozzle. The air inlet of the connector is connected to the air inlet oblique hole through the air inlet pipe to form an air inlet path. The air return port of the connector is connected to the air return hole to form an air return path. The water inlet of the connector is connected to the water spray nozzle through the water inlet pipe to form a water inlet path.

[0016] In an optional embodiment, along the air intake direction of the air intake pipe, the air intake pipe includes a first section, a second section, and a third section;

[0017] The inner diameter of the first segment is larger than the inner diameter of the third segment, and the inner diameter of the second segment gradually decreases from the end closer to the first segment to the other end closer to the third segment.

[0018] In an optional embodiment, a first non-metallic check valve is provided in the return gas path;

[0019] and / or;

[0020] A second non-metallic check valve is installed in the water inlet circuit.

[0021] In an optional embodiment, a check pad is provided inside the head shell, the check pad being located at the front end of the cavity and sleeved on the shaft of the movement;

[0022] The check pad includes a rigid support ring and a non-metallic inner ring. The non-metallic inner ring is radially cut to form a slit, and at least one slit is provided along the circumference of the non-metallic inner ring.

[0023] In an optional embodiment, the head end of the handle is connected to the neck of the head shell via a positioning structure, and / or the tail end of the handle is connected to the connector via a positioning structure.

[0024] The positioning structure includes interlocking positioning steel balls and grooves.

[0025] In an optional embodiment, the two ends of the air intake pipe are provided with threads, the neck of the head shell is provided with an air intake threaded hole communicating with the air intake oblique hole, and the connector is provided with an internal hexagon threaded tube.

[0026] One end of the air intake pipe is connected to the air intake threaded hole, and the other end is connected to the internal hexagonal threaded pipe.

[0027] In an optional implementation, the turbine is an impulse turbine or a deformable impulse turbine.

[0028] Compared with the prior art, the technical advantages of the pneumatic turbine mobile phone provided by this utility model are as follows:

[0029] The pneumatic turbine handpiece provided by this utility model includes: a head shell and a nozzle; the head shell has a cavity inside, and the inner wall of the cavity has an air inlet oblique hole and an air return hole, and along the inclined direction of the air inlet oblique hole, the air inlet oblique hole has a bottom end and a top end; the nozzle is inserted into the air inlet oblique hole, and the jet end of the nozzle is located between the bottom end and the top end of the hole.

[0030] By installing a nozzle inside the inclined inlet orifice, with the nozzle's jet tip located between the bottom and top of the orifice, the incident airflow, upon passing through the nozzle, experiences a jet angle of approximately 4° due to the constraint and expansion of the nozzle's orifice wall. This ensures that the majority of the incident airflow acts on the turbine blades, resulting in higher tangential velocity and torque for the turbine and reduced kinetic energy loss of the incident airflow. This allows the incident airflow to perform work on the turbine blades completely and concentratedly, improving the performance and efficiency of the pneumatic turbine. Simultaneously, the nozzle's placement also physically isolates the gas between the inclined inlet and outlet orifices, which are originally on the same arc working surface within the cavity. This effectively prevents turbulence or eddies caused by differences in inlet and outlet gas pressures, thereby reducing mixing interference and impact.

[0031] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the pneumatic turbine mobile phone structure provided in this embodiment of the utility model;

[0034] Figure 2 Exploded view of a pneumatic turbine mobile phone provided for an embodiment of this utility model;

[0035] Figure 3 This is a schematic diagram of the internal structure of the head shell provided in an embodiment of the present utility model;

[0036] Figure 4 This is a schematic diagram of the external structure of the head shell provided in an embodiment of the present utility model;

[0037] Figure 5 A side sectional view of the head shell provided in an embodiment of this utility model;

[0038] Figure 6 A cross-sectional view of the head shell provided in an embodiment of this utility model;

[0039] Figure 7 A schematic diagram of the air intake oblique hole without a nozzle installed in an embodiment of this utility model;

[0040] Figure 8 A cross-sectional view of a pneumatic turbine mobile phone provided for an embodiment of this utility model;

[0041] Figure 9 A schematic diagram of the water inlet circuit with a second non-metallic check valve installed according to an embodiment of this utility model;

[0042] Figure 10 This is a schematic diagram of the check gasket structure provided in an embodiment of the present utility model;

[0043] Figure 11 This is a cross-sectional view of the check pad provided in an embodiment of the present utility model.

[0044] Icons: 1-Head shell; 2-Cavity; 3-Inlet oblique hole; 4-Return hole; 5-Bottom of orifice; 6-Top of orifice; 7-Laval nozzle; 8-Recess; 9-Mechanism; 10-Turbine; 11-Handle; 12-Connector; 13-Inlet pipe; 14-Ball groove; 15-Water inlet pipe; 16-Water nozzle; 17-Inlet interface; 18-Return interface; 19-Water inlet interface; 20-First section; 21-Second section; 22-Third section; 23-Slit; 24-First non-metallic check valve; 25-Second non-metallic check valve; 26-Check gasket; 27-Rigid support ring; 28-Non-metallic inner ring; 29-Positioning steel ball; 30-Inlet threaded hole; 31-Internal hexagonal threaded tube; 32-Gland. Detailed Implementation

[0045] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0050] The specific structure is as follows: Figures 1 to 11 As shown.

[0051] This embodiment provides a pneumatic turbine handpiece, including: a head shell 1 and a nozzle; the head shell 1 has a cavity 2 inside, and the inner wall of the cavity 2 has an air inlet oblique hole 3 and an air return hole 4, and along the inclined direction of the opening of the air inlet oblique hole 3, the opening of the air inlet oblique hole 3 has a bottom end 5 and a top end 6; the nozzle is inserted into the air inlet oblique hole 3, and the jet end of the nozzle is located between the bottom end 5 and the top end 6 of the opening.

[0052] In this embodiment, a nozzle is installed inside the inlet oblique hole 3, with the jetting end of the nozzle located between the bottom end 5 and the top end 6 of the orifice. When the incident airflow passes through the nozzle, the jetting angle generated by the restriction and expansion of the nozzle orifice wall is approximately 4°, so that most of the incident airflow acts on the blades of the turbine 10. This not only enables the turbine 10 to obtain a higher tangential velocity and torque, but also reduces the kinetic energy loss of the incident airflow, allowing the incident airflow to do work on the turbine 10 blades completely and in a concentrated manner, thereby improving the performance and efficiency of the pneumatic turbine. At the same time, the installation of the nozzle also allows the gas between the inlet oblique hole 3 and the return air hole 4, which were originally on the same arc working surface in the cavity 2, to form a physical isolation, effectively avoiding turbulence or eddies generated when the inlet and outlet gas pressures are different, thereby reducing mixing interference and influence.

[0053] In the optional technical solution of this embodiment, the nozzle is a Laval nozzle 7. Under the condition that the gas input power remains unchanged, that is, the gas supply pressure and flow rate are constant, the Laval nozzle 7 can accelerate the speed of the incident airflow to supersonic speed, which can not only improve the fluid kinetic energy and the speed and torque of the turbine 10, but also increase the energy conversion efficiency, thereby further improving the performance and efficiency of the pneumatic turbine.

[0054] In the optional technical solution of this embodiment, the inner wall of the cavity 2 is provided with a recessed portion 8; the air inlet oblique hole 3 and the air return hole 4 are both provided in the recessed portion 8. This enlarges and deepens the arc working surface of the air inlet oblique hole 3 and the air return hole 4, thereby improving the isolation effect.

[0055] In the optional technical solution of this embodiment, it also includes a mechanism 9, a turbine 10, a handle 11, and a connector 12; the mechanism 9 and the turbine 10 are both disposed within the cavity 2, and the turbine 10 is disposed on the shaft of the mechanism 9; the head end of the handle 11 is connected to the neck of the head shell 1, and the tail end of the handle 11 is connected to the connector 12; at least an air inlet pipe 13 and a water inlet pipe 15 are disposed inside the handle 11, a water spray nozzle 16 is disposed on the head shell 1, the air inlet interface 17 of the connector 12 is connected to the air inlet oblique hole 3 through the air inlet pipe 13 to form an air inlet path, the air return interface 18 of the connector 12 is connected to the air return hole 4 to form an air return path, and the water inlet interface 19 of the connector 12 is connected to the water spray nozzle 16 through the water inlet pipe 15 to form a water inlet path. Among them, the head shell 1 is the core functional area of ​​the pneumatic turbine handpiece, and is the gathering place of various functions such as needle, water, and air. The filtered and regulated (rated) compressed air is used as the driving gas to drive the turbine 10 inside the head shell 1 to rotate, thereby driving the movement 9 and the needle to rotate at high speed; the handle 11 is equipped with an air inlet pipe 13 and a water inlet pipe 15 for conveying compressed gas; the connector 12 is the docking port for the pneumatic turbine handpiece to receive external air source.

[0056] In this embodiment, the pneumatic turbine mobile phone also includes a pressure cover 32, which is installed in the rear end sealing cavity 2 of the head shell 1.

[0057] In the optional technical solution of this embodiment, along the air intake direction of the air intake pipe 13, the air intake pipe 13 includes a first section 20, a second section 21 and a third section 22; the inner diameter of the first section 20 is larger than the inner diameter of the third section 22, and the inner diameter of the second section 21 gradually decreases from one end closer to the first section 20 to the other end closer to the third section 22.

[0058] In this embodiment, the intake pipe 13 is integrally formed, and the airflow passes through the first section 20, the second section 21 and the third section 22 in sequence. When passing through the second section 21, the airflow can be accelerated, effectively improving the airflow kinetic energy.

[0059] In the optional technical solution of this embodiment, a first non-metallic check valve 24 is provided in the return air passage, and / or a second non-metallic check valve 25 is provided in the water inlet passage.

[0060] In this embodiment, when a first non-metallic check valve 24 is installed in the return air path, when the intake air path continuously supplies air, the return air path will also have a certain pressure. At this time, the first non-metallic check valve 24 opens under the action of pressure, and the return air can pass smoothly. When the air supply to the intake air path stops, the pressure in the return air path drops sharply, and the first non-metallic check valve 24 in the return air path closes. Therefore, when the turbine 10 cannot return air, its tendency to rotate due to inertia is effectively suppressed, and it stops quickly. The first non-metallic check valve 24 can be installed in the return air interface 18 of the connector 12, or it can be installed in the return air hole 4, whichever meets the requirements.

[0061] In this embodiment, when a second non-metallic check valve 25 is installed in the water inlet circuit, the second non-metallic check valve 25 will open under the action of water pressure when the water inlet circuit is continuously supplied, allowing water to flow smoothly; and when the water supply to the water inlet circuit stops, the second non-metallic check valve 25 will close, preventing water from flowing back into the water inlet circuit. The second non-metallic check valve 25 can be installed in the water inlet pipe 15, in the water inlet interface 19 of the connector 12, or in the spray nozzle 16, as long as the requirements are met.

[0062] In the optional technical solution of this embodiment, a check pad 26 is provided inside the head shell 1. The check pad 26 is located at the front end of the cavity 2 and is sleeved on the shaft of the movement 9. The check pad 26 includes a rigid support ring 27 and a non-metallic inner ring 28. The non-metallic inner ring 28 is radially cut to form a slit 23, and at least one slit 23 is provided along the circumference of the non-metallic inner ring 28.

[0063] In this embodiment, when the pneumatic turbine mobile phone is working normally, the cavity 2 is under positive pressure. However, when the high-speed rotating turbine 10 stops, it will continue to rotate for a moment due to inertia. During this process, a negative pressure will form in the cavity 2, resulting in a backflow phenomenon. This draws in unclean external gas through the inter-shaft gap at the end of the mechanism 9, causing contamination inside the cavity 2. To address this problem, a check gasket 26 is provided at the inter-shaft gap of the mechanism 9 at the end of the cavity 2 to prevent the backflow phenomenon caused by the inertial rotation of the turbine 10. The check gasket 26 includes a rigid support ring 27 and a non-metallic inner ring 28. The non-metallic inner ring 28 is radially cut to form a slit 23, and at least one slit 23 is provided along the circumference of the non-metallic inner ring 28. When the driving gas drives the turbine 10 to rotate at high speed, the gas will blow the non-metallic inner ring 28 of the check gasket 26 outward through the gap between the shafts of the movement 9, separating it from the shaft of the movement 9. When the driving gas supply stops and the turbine 10 is about to stop rotating, the non-metallic inner ring 28 of the check gasket 26 immediately closes again, making full contact with the shaft of the movement 9. This not only serves as an emergency stop brake, shortening the inertial rotation time of the turbine 10, but also acts as a seal to prevent backflow and prevent the intake of unclean gas.

[0064] In this embodiment, any number of cuts 23 can be provided along the circumference of the non-metallic inner ring 28. Preferably, four cuts 23 are provided and are evenly distributed along the circumference of the non-metallic inner ring 28.

[0065] In the optional technical solution of this embodiment, the head end of the handle 11 is connected to the neck of the head shell 1 through a positioning structure, and / or the tail end of the handle 11 is connected to the connector 12 through a positioning structure; the positioning structure includes mutually cooperating positioning steel balls 29 and grooves.

[0066] In this embodiment, when the head end of the handle 11 is connected to the neck of the head shell 1 through a positioning structure, a groove can be provided on the inner wall of the head end of the handle 11 and a positioning steel ball 29 can be provided on the outer periphery of the neck of the head shell 1, or a positioning steel ball 29 can be provided on the inner wall of the head end of the handle 11 and a groove can be provided on the outer periphery of the neck of the head shell 1. The positioning steel ball 29 is embedded in the groove, which plays a guiding and positioning role in the engagement between the head shell 1 and the handle 11, facilitating the assembly between the head shell 1 and the handle 11.

[0067] In this embodiment, when the tail end of the handle 11 is connected to the connector 12 via a positioning structure, a groove can be provided on the inner wall of the tail end of the handle 11, and a positioning steel ball 29 can be provided on the outer periphery of the seat of the connector 12. Alternatively, a positioning steel ball 29 can be provided on the inner wall of the tail end of the handle 11, and a groove can be provided on the outer periphery of the seat of the connector 12. The positioning steel ball 29 is embedded in the groove, which guides and positions the connection between the connector 12 and the handle 11, facilitating the assembly between them.

[0068] In this embodiment, multiple positioning steel balls 29 can be provided, and in order to facilitate the installation of positioning steel balls 29, a ball groove 14 for installing positioning steel balls 29 is provided. The specific position of the ball groove 14 is determined according to the position of positioning steel balls 29.

[0069] In the optional technical solution of this embodiment, the two ends of the intake pipe 13 are provided with threads, the neck of the head shell 1 is provided with an intake threaded hole 30 communicating with the intake oblique hole 3, and the connector 12 is provided with an internal hexagon threaded tube 31; one end of the intake pipe 13 is connected to the intake threaded hole 30, and the other end is connected to the internal hexagon threaded tube 31. During assembly, all components can be organically fixed together by the tightening action of the internal hexagon threaded tube 31, making assembly convenient and stable.

[0070] In the optional technical solutions of this embodiment, the turbine 10 is an impulse turbine or a deformable impulse turbine.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pneumatic turbine mobile phone, characterized in that, include: Head shell (1) and nozzle; The head shell (1) has a cavity (2) inside. The inner wall of the cavity (2) has an air inlet oblique hole (3) and an air return hole (4). Along the inclined direction of the opening of the air inlet oblique hole (3), the opening of the air inlet oblique hole (3) has a bottom end (5) and a top end (6). The nozzle is inserted into the air inlet oblique hole (3), and the jet end of the nozzle is located between the bottom end (5) of the orifice and the top end (6) of the orifice.

2. The pneumatic turbine mobile phone according to claim 1, characterized in that, The nozzle is a Laval nozzle (7).

3. The pneumatic turbine mobile phone according to claim 1, characterized in that, The inner wall of the cavity (2) is provided with a recess (8); The air inlet oblique hole (3) and the air return hole (4) are both located in the recess (8).

4. The pneumatic turbine mobile phone according to any one of claims 1-3, characterized in that, It also includes the movement (9), the turbine (10), the handle (11), and the connector (12); The movement (9) and the turbine (10) are both disposed in the cavity (2), and the turbine (10) is disposed on the shaft of the movement (9); The head end of the handle (11) is connected to the neck of the head shell (1), and the tail end of the handle (11) is connected to the connector (12). The handle (11) is provided with at least an air inlet pipe (13) and a water inlet pipe (15). The head shell (1) is provided with a water spray nozzle (16). The air inlet interface (17) of the connector (12) is connected to the air inlet oblique hole (3) through the air inlet pipe (13) to form an air inlet path. The air return interface (18) of the connector (12) is connected to the air return hole (4) to form an air return path. The water inlet interface (19) of the connector (12) is connected to the water spray nozzle (16) through the water inlet pipe (15) to form a water inlet path.

5. The pneumatic turbine mobile phone according to claim 4, characterized in that, Along the air intake direction of the air intake pipe (13), the air intake pipe (13) includes a first section (20), a second section (21) and a third section (22); The inner diameter of the first segment (20) is larger than the inner diameter of the third segment (22), and the inner diameter of the second segment (21) gradually decreases from one end closer to the first segment (20) to the other end closer to the third segment (22).

6. The pneumatic turbine mobile phone according to claim 4, characterized in that, The return gas path is equipped with a first non-metallic check valve (24); and / or; A second non-metallic check valve (25) is installed in the water inlet circuit.

7. The pneumatic turbine mobile phone according to claim 4, characterized in that, A check pad (26) is provided inside the head shell (1). The check pad (26) is located at the front end of the cavity (2) and is sleeved on the shaft of the movement (9). The check pad (26) includes a rigid support ring (27) and a non-metallic inner ring (28), the non-metallic inner ring (28) being radially cut to form a notch (23), and at least one notch (23) being provided along the circumference of the non-metallic inner ring (28).

8. The pneumatic turbine mobile phone according to claim 4, characterized in that, The head end of the handle (11) is connected to the neck of the head shell (1) through a positioning structure, and / or the tail end of the handle (11) is connected to the connector (12) through a positioning structure. The positioning structure includes a positioning ball (29) and a groove that cooperate with each other.

9. The pneumatic turbine mobile phone according to claim 4, characterized in that, The intake pipe (13) is provided with threads at both ends, the neck of the head shell (1) is provided with an intake threaded hole (30) communicating with the intake oblique hole (3), and the connector (12) is provided with an internal hexagon threaded pipe (31). One end of the air intake pipe (13) is connected to the air intake threaded hole (30), and the other end is connected to the internal hexagonal threaded pipe (31).

10. The pneumatic turbine mobile phone according to claim 4, characterized in that, The turbine (10) is an impulse turbine or a deformable impulse turbine.

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