Foot switch air return silencer for dental treatment unit

Abstract

The utility model provides a foot switch back gas silencing device for dental treatment machine, including plug and shell, plug and shell are all hollow structure of one end opening, and plug and shell open end opposite arrangement and fixed connection, plug left end passes through air inlet connector and is communicated with foot switch back gas pipe, the shell is installed with silencing subassembly, and back gas in foot switch back gas pipe enters the shell through air inlet connector and passes through silencing subassembly and is discharged with silencing. The utility model discloses a plug connected with the air inlet connector is connected with the shell installed with the silencing subassembly, under the condition that does not influence the exhaust speed, effectively weakens the noise produced in the back gas process, controls the noise in the range of not influencing the diagnosis and treatment environment, improves the use experience of both doctors and patients, compact structure, silencing effect is good, and the installation is convenient, effectively reduces the noise pollution when back gas emptying, optimizes the diagnosis and treatment environment of dental clinic, guarantees the use experience and equipment operation stability of both doctors and patients.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a foot switch air return silencer for a dental treatment machine. Background Technology

[0002] In existing dental treatment machines, the air supply to the turbine drill is controlled via a foot switch and a main control air valve. The specific control logic is as follows: when the operator presses the foot switch, the main control air valve opens, supplying compressed air to the turbine drill, driving it to start and perform the treatment; when the foot switch is released, the main control air valve closes simultaneously, and the turbine drill stops working. During this process, any residual compressed air in the pipeline from the rear of the main control air valve to the front of the turbine drill must be promptly vented through the main control air valve to ensure the stability and safety of the equipment during subsequent startups.

[0003] However, the main control valve of the existing foot switch has obvious defects in the process of air return and venting, the core problem being excessive air return noise. Since dental clinics usually need to maintain a quiet treatment environment, this air return noise will have an adverse effect on both doctors and patients. On the one hand, it may interfere with the operation judgment of medical staff, and on the other hand, it will increase the patient's tension and affect the treatment experience. Therefore, it is necessary to improve the above-mentioned problems. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a foot switch return air silencing device for dental treatment machines. By connecting the plug connected to the air inlet to the cover with the silencing component, the noise generated during the return air process is effectively reduced without affecting the exhaust speed. The noise is controlled within a range that does not affect the treatment environment, improving the user experience for both doctors and patients. The device has a compact structure, good silencing effect, and is easy to install. It effectively reduces noise pollution during return air exhaust, optimizes the treatment environment of the dental clinic, and ensures the user experience for both doctors and patients as well as the stability of equipment operation.

[0005] The technical solution adopted in this utility model is as follows: a foot switch air return silencer for a dental treatment machine, including a plug and a cover. Both the plug and the cover are hollow structures with one open end, and the plug and the open end of the cover are facing each other and fixedly connected. The left end of the plug is connected to the foot switch air return pipe through an air inlet. A silencer component is installed on the cover, and the return air in the foot switch air return pipe enters the cover through the air inlet via the plug and is discharged after being silenced by the silencer component.

[0006] The noise reduction component includes inner noise reduction cotton and outer noise reduction cotton. The right end face of the cover has multiple exhaust holes that communicate with its interior. The inner noise reduction cotton is installed inside the cover, and the outer noise reduction cotton is fitted onto the right end of the cover.

[0007] Furthermore, the external sound-absorbing cotton is a hollow conical sleeve structure with one end open and the other end sealed, the outer diameter of the open end being larger than the outer diameter of the sealed end.

[0008] Furthermore, both the inner and outer sound-absorbing cotton are made of polyurethane foam.

[0009] Furthermore, a threaded hole is formed in the center of the left end face of the plug, and the right end of the air inlet nozzle is adapted to be connected to the threaded hole.

[0010] Furthermore, the plug has a stepped structure with the outer diameter of the left end being larger than that of the right end, and the outer diameter of the cover that is adapted to connect to the small diameter section of the plug at the left end is equal to the outer diameter of the large diameter section of the plug.

[0011] Advantages of this utility model compared to the prior art: 1. This technical solution uses a dual sound-absorbing structure of inner and outer sound-absorbing cotton. The return airflow first passes through the inner sound-absorbing cotton to initially absorb sound waves and slow down the flow rate. Then, after being discharged through the exhaust port, it passes through the outer sound-absorbing cotton for secondary sound absorption. At the same time, the airflow discharge area is expanded when passing through the outer sound-absorbing cotton. Without affecting the exhaust speed, the noise generated during the return air process is effectively reduced, and the noise is controlled within a range that does not affect the treatment environment, thus improving the user experience for both doctors and patients. 2. The stepped assembly structure of the plug and the cover in this technical solution ensures connection stability and coaxiality, and reduces airflow resistance; the air inlet nozzle and the plug are connected by threads, and the fixed connection between the cover and the plug can be a convenient form of snap-fit, adhesive or threaded connection, which facilitates quick installation of the device and subsequent replacement and maintenance of the sound-absorbing cotton. The inner and outer sound-absorbing cotton made of polyurethane foam material in this technical solution can quickly reduce noise when gas passes through the micropores of the sound-absorbing cotton. It has good performance, long service life, and does not require frequent replacement, thus reducing the cost of use. 4. This technical solution has a simple structure, is easy to install and maintain, has a compact overall structure and small size, and is suitable for the installation space requirements of dental treatment machines. It can be used not only for foot switch air return, but also for silencer of various air return mechanisms such as solenoid valves. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0013] The following will refer to the embodiments of this utility model. Figure 1-2The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0014] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] A foot switch return air silencing device for dental treatment machines includes a plug 2 and a housing 3. Both the plug 2 and the housing 3 are hollow structures with one open end, and the plug 2 and the housing 3 are positioned facing each other and fixedly connected. The left end of the plug 2 is connected to the foot switch return air pipe through an air inlet 1. A silencing component is installed on the housing 3, and the return air in the foot switch return air pipe enters the housing 3 through the air inlet 1, passes through the plug 2, and is then silenced and discharged by the silencing component. In the above structure, by connecting the plug 2 connected to the air inlet 1 to the housing 3 equipped with the silencing component, the noise generated during the return air process is effectively reduced without affecting the exhaust speed. The noise is controlled within a range that does not affect the treatment environment, improving the user experience for both doctors and patients. The structure is compact, has a good silencing effect, is easy to install, effectively reduces noise pollution during return air exhaust, optimizes the treatment environment of the dental clinic, and ensures the user experience for both doctors and patients as well as the stability of equipment operation.

[0017] The specific structure of the noise reduction assembly is as follows: The noise reduction assembly includes inner noise reduction cotton 4 and outer noise reduction cotton 5. The right end face of the cover 3 has multiple exhaust holes 6 communicating with its interior. The inner noise reduction cotton 4 is installed inside the cover 3, and the outer noise reduction cotton 5 is fitted onto the right end of the cover 3. Specifically, the outer noise reduction cotton 5 is a hollow conical sleeve structure with one open end and the other closed end; the outer diameter of the open end is larger than the outer diameter of the closed end. The conical sleeve design of the outer noise reduction cotton 5 increases the contact area between the outer noise reduction cotton 5 and the air, thus improving noise reduction. On the one hand, it facilitates airflow diffusion during return air discharge; in the above structure, through the double sound-absorbing structure of inner sound-absorbing cotton 4 and outer sound-absorbing cotton 5, the return airflow first passes through the inner sound-absorbing cotton 4 to initially absorb sound waves and slow down the flow rate, and then passes through the exhaust hole 6 and passes through the outer sound-absorbing cotton 5 for secondary sound absorption. At the same time, the airflow discharge area is expanded when passing through the outer sound-absorbing cotton 5. Without affecting the exhaust speed, the noise generated during the return air process is effectively reduced, and the noise is controlled within a range that does not affect the treatment environment, thus improving the user experience for both doctors and patients. Specifically, both the inner sound-absorbing cotton 4 and the outer sound-absorbing cotton 5 are made of polyurethane foam. The inner sound-absorbing cotton 4 and the outer sound-absorbing cotton 5 made of polyurethane foam can quickly reduce noise when gas passes through the micropores of the sound-absorbing cotton, resulting in good performance, long service life, no need for frequent replacement, and reduced operating costs. Polyurethane foam has the characteristics of fine pores, good elasticity, excellent sound absorption performance, and strong chemical stability, which can effectively absorb the sound wave energy in the return airflow. At the same time, it has good aging resistance and air permeability, ensuring the stability of the sound absorption effect during long-term use.

[0018] The connection structure between the plug 2 and the air inlet 1 is as follows: The left end face of the plug 2 has a threaded hole in the center, and the right end of the air inlet 1 is adapted to connect with the threaded hole. The threaded connection facilitates the disassembly and maintenance of the air inlet 1 and the plug 2, while ensuring the sealing of the connection part and preventing the back air leakage from generating additional noise. In the above structure, the air inlet 1 and the plug 2 are connected by threads. The fixed connection between the cover 3 and the plug 2 can be a convenient form of snap-fit, glue or threaded connection, which facilitates the quick installation of the device and the replacement and maintenance of the sound-absorbing cotton in the later stage. The air inlet 1 adopts a standard size and can be used not only for the return air of foot switches, but also for the silencer of various return air such as solenoid valves. The plug 2 has a stepped structure with a larger outer diameter on the left end than on the right end. The outer diameter of the cover 3, which is adapted to connect to the small diameter section of the plug 2 on the left end, is equal to the outer diameter of the large diameter section of the plug 2. This further improves the structural compactness and facilitates installation within the limited space of the dental treatment machine. In the above structure, the stepped assembly structure of the plug 2 and the cover 3 ensures connection stability and coaxiality, and reduces airflow resistance. This technical solution has a simple structure, is easy to install and maintain, has a compact overall structure and small size, and is suitable for the installation space requirements of dental treatment machines, effectively reducing backflow noise.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foot switch air return silencer for a dental treatment machine, characterized in that: It includes a plug (2) and a cover (3). Both the plug (2) and the cover (3) are hollow structures with one open end. The plug (2) and the cover (3) are set facing each other and fixedly connected. The left end of the plug (2) is connected to the foot switch return air pipe through the air inlet (1). The cover (3) is equipped with a silencer component. The return air in the foot switch return air pipe enters the cover (3) through the air inlet (1) and the plug (2) and is discharged after being silenced by the silencer component.

2. The foot switch air return silencer for a dental treatment machine according to claim 1, characterized in that: The noise reduction assembly includes inner noise reduction cotton (4) and outer noise reduction cotton (5). The right end face of the cover (3) has multiple exhaust holes (6) communicating with its interior. The inner noise reduction cotton (4) is installed inside the cover (3), and the outer noise reduction cotton (5) is fitted onto the right end of the cover (3).

3. The foot switch air return silencer for a dental treatment machine according to claim 2, characterized in that: The external sound-absorbing cotton (5) is a hollow conical sleeve structure with one end open and the other end sealed, the outer diameter of the open end being larger than the outer diameter of the sealed end.

4. The foot switch air return silencer for a dental treatment machine according to claim 2, characterized in that: Both the inner sound-absorbing cotton (4) and the outer sound-absorbing cotton (5) are made of polyurethane foam.

5. The foot switch air return silencer for a dental treatment machine according to claim 1, characterized in that: The plug (2) has a threaded hole in the center of its left end face, and the right end of the air inlet (1) is adapted to connect with the threaded hole.

6. The foot switch air return silencer for a dental treatment machine according to claim 1, characterized in that: The plug (2) has a stepped structure with the outer diameter of the left end being larger than that of the right end, and the outer diameter of the cover (3) adapted to connect to the small diameter section of the plug (2) is equal to the outer diameter of the large diameter section of the plug (2).

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