Gas type oil removal device for dental handpiece

Abstract

The utility model relates to the technical field of oil removal devices, in particular to a gas type oil removal device for a dental handpiece. The utility model provides a gas-type oil removal device for a dental handpiece, which comprises a tank body for storing fuel, a cover body for providing a space for fuel combustion is arranged at the top of the tank body, a pipe body connected with the tank body extends outwards from the tail end of the cover body, and a gas-type oil removal device capable of adjusting fuel pressure and flow is arranged at the upper part of the tank body. The adjusting assembly comprises a material pipe, the material pipe is arranged at the tail end of the pipe body and extends into the tank body in the vertical direction, an air blowing assembly used for conveying air to conduct air blowing on the mobile phone so as to remove redundant oil in the mobile phone is arranged on one side of the tank body, and the air blowing assembly comprises an air pipe. The air pipe is arranged in the axis position of the length direction of the cover body and extends out of the cover body, and a sealing assembly is arranged at the end of the air pipe and comprises a connecting rod in threaded connection with the air pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil removing device, in particular to a gas type oil removing device for dental handpiece. BACKGROUND

[0002] The dental handpiece is the most commonly used and the most universal instrument in the department of stomatology, and is also one of the most seriously contaminated instruments; because it directly contacts the blood and saliva of the patient during use, and the blood and saliva of the patient may carry a large number of viruses and bacteria, if the sterilization is not thorough, cross infection may be caused.

[0003] Therefore, the supply room usually adopts paper-plastic bag to pack separately, and then assists the steam sterilization to perform high-temperature disinfection, however, during the disinfection process, the lubricating oil in the handpiece is easy to flow out due to heat, so that the paper-plastic bag appears oil package phenomenon, thereby affecting the steam penetration, resulting in unqualified sterilization of the handpiece. CONTENT OF THE INVENTION

[0004] The problem to be solved by the present application is that the existing dental handpiece is easy to flow out the lubricating oil due to heat when using high-temperature steam for sterilization, so that the paper-plastic bag appears oil package phenomenon, thereby affecting the steam penetration, resulting in unqualified sterilization of the handpiece.

[0005] In order to solve the above technical problems, the present application provides a gas type oil removing device for dental handpiece, which comprises a tank body for storing fuel, a cover body arranged at the top of the tank body for providing space for fuel combustion, a pipe body connected with the tank body and extending outward from the end of the cover body, an adjusting assembly arranged at the upper part of the tank body and capable of adjusting the fuel pressure and flow to stably supply fuel to the inside of the cover body, the adjusting assembly comprising a material pipe arranged at the end of the pipe body and extending to the inside of the tank body along the vertical direction, a blowing assembly arranged at one side of the tank body and used for conveying gas to blow the handpiece to remove the excess oil inside, the blowing assembly comprising a gas pipe arranged along the axial position of the length direction of the cover body and extending to the outside of the cover body, and a sealing assembly arranged at the end of the gas pipe, the sealing assembly comprising a connecting rod threadedly connected with the gas pipe.

[0006] Since the gas type oil removing device for dental handpiece of the present application is designed with the adjusting assembly, the blowing assembly and the sealing assembly, the stability of the gas source heating can be realized through the adjusting assembly, the blowing and oil removing operation of the handpiece can be realized through the blowing assembly, and the heat source loss during blowing can be reduced through the sealing assembly, so that the excess oil inside the dental handpiece can be effectively blown out by means of the hot gas source, so that the oil will not flow out during steam sterilization, and the problem of unqualified sterilization of the handpiece due to the fact that the lubricating oil inside the existing dental handpiece is easy to flow out due to heat when using high-temperature steam for sterilization, so that the paper-plastic bag appears oil package phenomenon, thereby affecting the steam penetration, resulting in unqualified sterilization of the handpiece. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 A perspective view schematic diagram of an embodiment.

[0008] Figure 2 A front view schematic diagram of an embodiment.

[0009] Figure 3 A side view schematic diagram of an embodiment.

[0010] Figure 4 A top view schematic diagram of an embodiment.

[0011] Figure 5 A sectional view schematic diagram of an embodiment.

[0012] Figure 6 A perspective view schematic diagram of a pressurizing member.

[0013] Figure 7 A perspective view schematic diagram of a pressure releasing member.

[0014] Figure 8 A perspective view schematic diagram of a flow adjusting member.

[0015] Figure 9 A sectional view schematic diagram of a blowing assembly.

[0016] Figure 10 A perspective view schematic diagram of a sealing assembly.

[0017] In the figure: 1, blowing assembly; 2, cover body; 3, air pipe; 4, connecting rod; 5, sealing assembly; 6, pipe body; 7, pressure releasing member; 8, pressurizing member; 9, handle; 10, tank body; 11, flow adjusting member; 12, material pipe; 13, end cap; 14, end cover; 15, sliding rod; 16, first spring; 17, plug; 18, handle; 19, pressing rod; 20, gun body; 21, rubber plug; 22, second spring; 23, supporting sleeve; 24, third spring; 25, rod sleeve; 26, rubber sleeve; 27, joint. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0019] The present application relates to a gas type oil removing device for dental handpiece, such as Figures 1-10As shown, the oil removal device comprises a tank 10 for storing fuel to provide the basis for combustion, a handle 9 is arranged on one side of the tank 10 to facilitate user operation and taking, a cover 2 is arranged on the top of the tank 10 to provide space for fuel combustion, the end of the cover 2 extends outwardly with a pipe body 6 connected with the tank 10, the pipe body 6 is integrally formed with the cover 2 and provides a channel for fuel to flow from the tank 10 to the cover 2, an adjusting assembly is further arranged on the upper part of the tank 10 to adjust the pressure and flow of the fuel so as to stably supply the fuel to the inside of the cover 2, the adjusting assembly comprises a pipe 12 arranged at the end of the pipe body 6 and extending to the inside of the tank 10 in the vertical direction to assist the stable delivery of the fuel, a blowing assembly 1 for delivering gas to inflate the mobile phone to remove the excess oil inside is arranged on one side of the tank 10, the blowing assembly 1 comprises a gas pipe 3 arranged along the axial position of the length direction of the cover 2 and extending to the outside of the cover 2, by means of the combustion of fuel inside the cover 2, the gas passing through the gas pipe 3 can be quickly heated, so as to improve the oil removal effect of the mobile phone by means of high-temperature air, so as to reduce the probability of oil package of the mobile phone during steam sterilization, in order to reduce the heat loss of the gas pipe 3 after abutting with the dental mobile phone due to insufficient sealing degree, the end of the gas pipe 3 is provided with a sealing assembly 5, the sealing assembly 5 comprises a connecting rod 4 threadedly connected with the gas pipe 3, the connecting rod 4 can provide the function of sliding contraction, so as to improve the sealing performance with the dental mobile phone, the user carries and operates the device through the handle 9, adjusts the supply of fuel through the adjusting assembly, ignites the fuel in the cover 2, so that the gas passing through the gas pipe 3 can be quickly heated, since the flow speed of the gas is fast, therefore, compared with the electric heating mode, the fuel combustion heating mode can realize effective heating operation of the gas source in a very short time, the heated gas is delivered to the dental mobile phone through the sealing assembly 5 to perform the oil removal operation of the dental mobile phone, by exhausting the excess oil inside the mobile phone, the mobile phone reduces the oil package of the paper bag during subsequent steam sterilization, so as to reduce the influence of the sterilization effect caused by the outflow of oil.

[0020] The adjusting assembly not only includes the material pipe 12, but also adds the pressure adjusting part and the flow adjusting part 11, so as to realize fine adjustment of the fuel supply pressure and flow. The pressure adjusting part is divided into the pressure increasing part 8 and the pressure releasing part 7. The pressure increasing part 8 is obliquely arranged on one side of the tank body 10. The user can operate the pressure increasing part 8 by reciprocating pulling and pushing, so as to supplement air into the tank body 10, and effectively improve the fuel delivery pressure in the tank body 10. This design makes the device adapt to different requirements for fuel pressure in different working environments. The pressure releasing part 7 is arranged on the top of the tank body 10. The pressure releasing part 7 is operated by manually rotating to open and close. When it is necessary to reduce the pressure in the tank body 10, the user can rotate to open the pressure releasing part 7, so that the tank body 10 is communicated with the external air, thereby releasing the pressure in the tank body 10, and reducing the fuel delivery rate. This design not only ensures the safety of the device, but also provides more operation flexibility for the user. The flow adjusting part 11 is arranged at the end of the pipe body 6. The flow adjusting part 11 adjusts the fuel flow by changing the communication volume between the pipe body 6 and the material pipe 12. This design enables the user to accurately control the fuel supply according to actual needs, so as to ensure the stability and efficiency of the combustion process. Through the cooperation of the pressure adjusting part and the flow adjusting part 11, the oil removal device can comprehensively and finely adjust the fuel supply pressure and flow, so as to ensure that the device can maintain the best working state in various working environments. This not only improves the applicability and practicality of the device, but also provides a powerful guarantee for efficient and safe cleaning of the dental handpiece.

[0021] The pressurizing member 8 is an important component of the adjusting assembly, which is used to supplement air into the inside of the tank body 10 to increase the delivery pressure of the fuel, and the pressurizing member 8 comprises an end cover 14, a sliding rod 15, an end cap 13, a first spring 16 and a plug 17. The end cover 14 is installed on the side of the tank body 10 by threaded connection, which not only ensures the stability of the end cover 14, but also facilitates the user to disassemble and maintain when needed. A hole is arranged at the center position of the end cover 14 for the reciprocating sliding of the sliding rod 15. The sliding rod 15 is arranged in the center hole of the end cover 14 and can reciprocate along the axis direction of the hole. One end of the sliding rod 15 extends into the inside of the tank body 10 and is connected with the plug 17, and the other end extends to the outside of the end cover 14 and is connected with the end cap 13. The end cap 13 is arranged outside the end cover 14 and is connected with the sliding rod 15. The user can manually operate the end cap 13 to push or pull the sliding rod 15, so as to realize the adjustment of the pressure inside the tank body 10. The first spring 16 is arranged between the end cover 14 and the plug 17 and is sleeved on the sliding rod 15. One end of the first spring 16 abuts against the inside surface of the end cover 14, and the other end abuts against the outside surface of the plug 17. When the user pushes the sliding rod 15 through the end cap 13, the first spring 16 is compressed to generate elastic force. When the user releases the end cap 13, the first spring 16 releases the elastic force to push the plug 17 to move into the inside of the tank body 10, so as to supplement the external air into the inside of the tank body 10 to increase the delivery pressure of the fuel. The plug 17 is arranged in the inside of the tank body 10 and is connected with the sliding rod 15. The shape and size of the plug 17 are matched with the inside space of the tank body 10, so that the plug 17 can move in the inside of the tank body 10 under the pushing of the sliding rod 15. When the plug 17 moves into the inside of the tank body 10, it introduces the external air into the inside of the tank body 10 through the air inlet hole on the end cover 14. When the plug 17 moves outward, it discharges the air in the inside of the tank body 10 through the air outlet hole.

[0022] The pressure relief member 7 is designed as a straight cylinder cap with the upper end sealed. The cap is connected with the tank body 10 by threaded connection, which not only ensures the tightness between the cap and the tank body 10, but also facilitates the disassembly and installation when needed. The top of the cap is arranged with a round wing type flap which is easy to be pushed. This design enables the user to easily rotate the cap by pushing the flap, so as to realize the rapid pressure relief. The design of the round wing type flap not only increases the pushing area and facilitates the user to exert force, but also prevents the fingers from being scratched during the pushing process. At the same time, the wing structure of the flap also increases the aesthetic appearance, so that the whole device is more coordinated in vision. When it is needed to reduce the pressure in the inside of the tank body 10, the user only needs to gently push the round wing type flap to rotate the cap to the appropriate position, so as to realize the communication between the inside and outside of the tank body 10, thereby achieving the purpose of pressure relief. This design not only is simple and fast in operation, but also can effectively avoid the safety problems caused by excessive pressure.

[0023] The flow adjusting member 11 is designed as a rod body with a stepped rod structure, which can gradually change the communication volume between the pipe body 6 and the material pipe 12 when the rod body rotates, so as to finely adjust the fuel flow, and the rod body is connected with the tank body 10 through threads, which ensures the stability and adjustment accuracy of the rod body, and by rotating the rod body, it can be gradually screwed into or out of the tank body 10, so as to change the relative position between the pipe body 6 and the material pipe 12, when the rod body is screwed in, it will gradually occupy the space between the pipe body 6 and the material pipe 12, reducing the communication volume and thus reducing the fuel flow, on the contrary, when the rod body is screwed out, it will release more space, increasing the communication volume and thus increasing the fuel flow.

[0024] The blowing assembly 1 is an important part of the device, which is used to deliver heated gas to the dental handpiece, and the assembly further comprises a gun body 20, a handle 18, a pressing rod 19, a rubber plug 21, a second spring 22 and a support sleeve 23, the gun body 20 is arranged outside the cover body 2 and connected with one end of the gas pipe 3, the design of the gun body 20 ensures that the gas can smoothly flow from the gas pipe 3 into the interior of the gun body 20, and the end of the gun body 20 is connected with the air pump through a hose, so as to realize continuous supply of gas, the handle 18 is arranged at the upper part of the gun body 20 and controls the on-off of the gas delivery channel in the gun body 20 through pressing, which makes the user control the gas flow through simple pressing action, improving the convenience of operation, the pressing rod 19 is vertically arranged in the interior of the gun body 20 and connected with the handle 18, when the handle 18 is pressed, the pressing rod 19 will move downward, so as to change the state of the gas channel in the gun body 20, the rubber plug 21 is arranged at the lower end of the pressing rod 19 and cooperates with the support sleeve 23 to realize the on-off operation of the gas delivery channel, the rubber plug 21 has good sealing performance and can effectively prevent gas leakage, ensuring the stability of gas delivery, the second spring 22 is arranged between the rubber plug 21 and the support sleeve 23 and provides restoring force for the rubber plug 21, when the handle 18 is not pressed, the second spring 22 will push the rubber plug 21 back to the initial position, so as to close the gas delivery channel, when the handle 18 is pressed, the second spring 22 will be compressed, allowing the rubber plug 21 to move downward and open the gas delivery channel, the support sleeve 23 is arranged in the interior of the gun body 20 and cooperates with the rubber plug 21 to form a controllable gas delivery channel, the design of the support sleeve 23 ensures that the rubber plug 21 can stably change the state of the channel during movement, so as to realize accurate control of the gas, through the design of the blowing assembly 1, stable delivery and accurate control of the heated gas are realized, the user only needs to control the gas flow state through simple pressing action of the handle 18, which not only facilitates operation but also improves work efficiency, at the same time, the cooperation of the rubber plug 21 and the support sleeve 23 and the restoring force of the second spring 22 also ensure the safety and reliability of gas delivery.

[0025] The close-fitting assembly 5 is a key part of the device, used to ensure stable connection and effective sealing between the dental handpiece and the oil removal device. The assembly includes a rod sleeve 25, a third spring 24, a rubber sleeve 26, and a connector 27. The rod sleeve 25 is slidably sleeved on the outside of the connecting rod 4. This design allows the rod sleeve 25 to slide freely on the connecting rod 4 to accommodate dental handpieces of different lengths or adjust the connection position. At the same time, a good sliding fit is formed between the inner wall of the rod sleeve 25 and the outer wall of the connecting rod 4, ensuring smoothness and stability during sliding. The third spring 24 is sleeved between the rod sleeve 25 and the connecting rod 4, providing a restoring force for the rod sleeve 25. When the rod sleeve 25 is subjected to external force and slides, the third spring 24 will be compressed or stretched. When the external force disappears, the third spring 24 will recover its original shape, thereby bringing the rod sleeve 25 back to the initial position. This design allows the close-fitting assembly 5 to have certain self-adaptive ability, which can adapt to dental handpieces of different sizes and maintain stable connection. The rubber sleeve 26 is arranged at the end of the rod sleeve 25 and is used to wrap the end of the dental handpiece. The rubber sleeve 26 is made of soft and durable material and can tightly fit the surface of the dental handpiece to form a good sealing effect. At the same time, the inner wall of the rubber sleeve 26 is designed with anti-slip texture to increase the friction between the rubber sleeve 26 and the dental handpiece, preventing sliding or falling during use. The connector 27 is arranged at the central position inside the rubber sleeve 26 and abuts against and communicates with the corresponding interface of the dental handpiece. The design of the connector 27 ensures that gas can be smoothly transmitted from the oil removal device to the inside of the dental handpiece for cleaning operation. At the same time, the shape and size of the connector 27 are matched with the interface of the dental handpiece to ensure the stability and sealing of the connection. Through the above design of the close-fitting assembly 5, the device realizes stable connection and effective sealing between the dental handpiece and the oil removal device. This optimized design not only improves the effect and safety of the cleaning process, but also simplifies the operation steps and improves the work efficiency. At the same time, the self-adaptive ability and anti-slip design of the close-fitting assembly 5 make the device applicable to dental handpieces of different sizes and models, with a wider application range.

[0026] The oil removal operation steps of the oil removal device on the dental handpiece are as follows:

[0027] (1) Operation preparation

[0028] Before using the oil removal device for oil removal operation, it is necessary to ensure that all parts of the device are intact and have been correctly assembled. At the same time, it is necessary to check whether the dental handpiece is suitable for cleaning with the device and whether its interface is matched with the connector 27 of the close-fitting assembly 5.

[0029] (2) Connect the dental handpiece

[0030] The end of the dental handpiece is aligned with the rubber sleeve 26 of the sealing assembly 5 and gently inserted, ensuring that the interface of the dental handpiece tightly fits the joint 27. During the insertion process, the rubber sleeve 26 tightly wraps around the end of the dental handpiece, forming an effective seal. At the same time, the rod sleeve 25 self-adaptively adjusts its position under the action of the third spring 24 to ensure stable connection.

[0031] (3) Start the oil removal device

[0032] The igniter is used to ignite the fuel at the position of the cover body 2. According to the needs, the fuel supply amount is adjusted by the adjusting assembly to control the temperature of the heated gas. This can be achieved by rotating the flow regulating member 11 to change the communication volume between the pipe body 6 and the material pipe 12.

[0033] (4) Perform oil removal operation

[0034] When the oil removal device is started, the heated gas will be delivered to the inside of the dental handpiece through the air pipe 3 and the gun body 20. Under the action of the gas, the excess oil in the inside of the dental handpiece will be softened and blown out. Through continuous gas flow, the excess oil will be taken out of the dental handpiece and discharged together with the gas into the designated collection container.

[0035] (5) Monitoring and adjustment

[0036] During the oil removal operation, the working state of the oil removal device and the cleaning condition of the dental handpiece need to be closely monitored. If it is found that the gas temperature is insufficient or the oil stain removal effect is not good, the adjusting assembly can be adjusted in time to increase the fuel supply amount to increase the gas temperature, or the oil removal time is prolonged to ensure thorough cleaning.

[0037] (6) End operation and post-processing

[0038] When the oil stains in the inside of the dental handpiece are completely removed, the fuel outflow is closed by rotating the rod body, the device is stopped, the connection between the dental handpiece and the sealing assembly 5 is disconnected, the dental handpiece is taken out, and the oil removal device is cleaned and maintained as necessary to ensure its long-term stable operation. If multiple dental handpieces need to be oiled, the fuel outflow amount can be adjusted to be low to reduce the ignition frequency.

[0039] In general, terms should be understood, at least in part, to refer to a usage of those terms as would be understood by one of ordinary skill in the art. For example, a term used in the description and / or the claims that can have been used interchangeably with another term or terms should be understood, at least in part, to refer to the usage of the other term or terms. Similarly, one or more terms used in the description and / or claims should be understood, at least in part, to refer to one or more usage of the term or terms as would be understood by one of ordinary skill in the art.

[0040] It should be readily understood that "on," "over," and "above" in the present disclosure are to be interpreted in the broadest context, such that "on" means not only "directly on" but also includes the meaning of "on" with intervening features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above" but also the meaning of "over" or "above" with no intervening features or layers therebetween (i.e., directly on).

[0041] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the above-described embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pneumatic oil removal device for dental handpieces, comprising a tank (10) for storing fuel, characterized in that: The top of the tank (10) is provided with a cover (2) to provide space for fuel combustion. The end of the cover (2) extends outward with a pipe (6) connected to the tank (10). The upper part of the tank (10) is also provided with an adjustment component that can adjust the fuel pressure and flow rate to stably supply fuel to the inside of the cover (2). The adjustment component includes a feed pipe (12), which is located at the end of the pipe (6) and extends vertically into the inside of the tank (10). On one side of the tank (10) is a blowing component (1) for conveying gas to blow air into the mobile phone to remove excess oil inside. The blowing component (1) includes an air pipe (3), which is located at the axial position along the length direction of the cover (2) and extends to the outside of the cover (2). The end of the air pipe (3) is provided with a sealing component (5), which includes a connecting rod (4) threadedly connected to the air pipe (3).

2. The air-type degreasing device for dental handpieces according to claim 1, characterized in that: The regulating assembly also includes a pressure regulating component and a flow regulating component (11) for fine adjustment of fuel supply pressure and flow. The pressure regulating component is divided into a pressure increasing component (8) and a pressure decreasing component (7). The pressure increasing component (8) is arranged at an angle on one side of the tank body (10), while the pressure decreasing component (7) is arranged on the top of the tank body (10). The flow regulating component (11) is arranged at the end of the pipe body (6).

3. The air-type degreasing device for dental handpieces according to claim 2, characterized in that: The pressurizing component (8) includes an end cap (14), a sliding rod (15), an end cap (13), and a plug (17). The end cap (14) is installed on the side of the tank body (10) by means of a threaded connection. The end cap (14) has a central hole on its upper part. The sliding rod (15) is slidably arranged in the central hole of the end cap (14). The plug (17) is arranged inside the tank body (10). The end cap (13) is arranged outside the end cap (14). One end of the sliding rod (15) extends into the tank body (10) and connects with the plug (17). The other end of the sliding rod (15) extends into the end cap (14) and connects with the end cap (13). A first spring (16) is arranged between the end cap (14) and the plug (17) and is sleeved on the sliding rod (15). One end of the first spring (16) abuts against the inner side of the end cap (14), and the other end abuts against the outer side of the plug (17).

4. The air-type degreasing device for dental handpieces according to claim 2, characterized in that: The pressure relief component (7) is a cylindrical cap with a sealed top. The cap is connected to the tank body (10) by a thread. The top of the cap is equipped with a round wing-shaped disc for easy manipulation.

5. The air-type degreasing device for dental handpieces according to claim 2, characterized in that: The flow regulating component (11) is a rod with a stepped rod structure, and the rod is connected to the tank (10) by a thread.

6. The air-type degreasing device for dental handpieces according to claim 1, characterized in that: The air blowing assembly (1) also includes a gun body (20), a handle (18) and a pressure rod (19). The gun body (20) is located outside the cover (2) and connected to one end of the air pipe (3). The handle (18) is located on the upper part of the gun body (20). The pressure rod (19) is vertically located inside the gun body (20) and connected to the handle (18).

7. The air-type degreasing device for dental handpieces according to claim 6, characterized in that: The air blowing assembly (1) also includes a rubber plug (21), a support sleeve (23) and a second spring (22). The rubber plug (21) is arranged at the lower end of the pressure rod (19), the support sleeve (23) is arranged inside the gun body (20) and cooperates with the rubber plug (21) to form a controllable air supply channel, and the second spring (22) is arranged between the rubber plug (21) and the support sleeve (23).

8. The air-type degreasing device for dental handpieces according to claim 1, characterized in that: The tight-fitting assembly (5) also includes a rod sleeve (25), a third spring (24), a rubber sleeve (26), and a connector (27). The rod sleeve (25) is slidably fitted on the outside of the connecting rod (4). The third spring (24) is fitted between the rod sleeve (25) and the connecting rod (4). The rubber sleeve (26) is arranged at the end of the rod sleeve (25) to wrap the end of the dental handpiece. The connector (27) is arranged in the center inside the rubber sleeve (26) to abut against the corresponding interface of the dental handpiece and achieve communication.

9. The air-type degreasing device for dental handpieces according to claim 1, characterized in that: The pipe body (6) and the cover body (2) are integrally formed.

10. The air-type degreasing device for dental handpieces according to claim 1, characterized in that: A handle (9) is provided on one side of the can (10) to facilitate operation and handling by the user.

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