Novel nozzle of sand blasting tooth cleaning machine

Abstract

The utility model discloses a novel sand blasting tooth cleaner nozzle, which relates to the technical field of dental medical instruments and comprises a nozzle main body, a gas supply pipeline and a water supply pipeline are arranged in the nozzle main body, a spraying element is arranged at the output end of the nozzle main body, a gas transmission channel and a water transmission channel are arranged on the spraying element, the gas transmission channel is connected with the gas supply pipeline, and the water transmission channel is connected with the water supply pipeline. The water conveying channels are connected with the water supply pipeline, the gas conveying channels are located on the axis of the spraying element, and the water conveying channels are evenly distributed on the periphery of the gas conveying channels. According to the utility model, the gas transmission channel and the water transmission channel are arranged on one part of the ejection element, so that the machining difficulty is reduced, the assembly process is simplified, and the noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dental medical instruments, in particular to a novel nozzle for a sandblasting tooth scaler. Background Art

[0002] Air polishing cleans teeth by using compressed air to propel abrasive powder (usually composed of sodium bicarbonate, glycine, or erythritol) onto the tooth surface, where it mixes with a liquid medium (usually water) and impacts the tooth surface with kinetic energy to remove plaque and tartar. Some air polishing nozzles have a core inserted inside that connects to the air supply line. The outer side of the core and the inner wall of the nozzle are connected to the water supply line, thus spraying out the abrasive powder and liquid medium. However, due to low coaxiality precision between the core and the nozzle, the liquid cannot effectively encapsulate the abrasive powder and gas mixture, resulting in inadequate cleaning.

[0003] Patent document CN219720889U discloses a sandblasting nozzle. By setting a guide sleeve between the nozzle body and the nozzle pipe, the coaxiality of the nozzle body and the nozzle pipe is improved. A water groove is set between the clamping part of the guide sleeve and the nozzle pipe to allow liquid to pass through. In this way, the liquid can encapsulate the sandblasting powder mixed with gas. However, since the nozzle and the guide sleeve are two separate parts, the fit between the parts is highly demanding, and the processing and assembly are difficult. If the fit accuracy between the nozzle and the guide sleeve is reduced, the nozzle is prone to vibration when the high-pressure gas is ejected from the nozzle, which will generate noise and reduce the patient's comfort. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a novel sandblasting and tooth-scaling machine nozzle, which has low processing difficulty, simplified assembly process, and generates lower noise.

[0005] In order to achieve the purpose of the utility model, the following technical solutions are adopted:

[0006] A novel air blasting nozzle for dental cleaning machines includes a nozzle body and an ejection element. The nozzle body has an air supply channel and a water supply channel. The ejection element is located at the output end of the nozzle body and has an air delivery channel and a water delivery channel. The air delivery channel is connected to the air supply channel, and the water delivery channel is connected to the water supply channel. The air delivery channel is located on the axis of the ejection element, and there are several water delivery channels arranged around the air delivery channel.

[0007] Furthermore, the ejection element includes an output base and a first boss arranged from bottom to top, and the air delivery channel and the water delivery channel both pass through from the lower end of the output base to the upper end of the first boss.

[0008] Furthermore, the output base is in the shape of a cylinder, a regular polygonal prism or an inverted frustum.

[0009] Furthermore, the ejection element also includes a second boss, which is arranged at the upper end of the first boss. The first boss and the second boss are coaxial, the outer diameter of the second boss is smaller than the outer diameter of the first boss, and the air supply channel passes through to the upper end of the second boss.

[0010] Furthermore, a fixing portion is provided on the outer periphery of the upper end of the second boss. The outer diameter of the fixing portion is larger than the outer diameter of the second boss. The fixing portion is fixedly connected to the nozzle body.

[0011] Furthermore, a stepped connecting hole is provided on the output end of the nozzle body, and the outer walls of the output base, the first boss and the fixing portion are all fixedly connected to the hole wall of the connecting hole.

[0012] Furthermore, sealing rings are provided between the outer wall of the first boss and the wall of the connecting hole, as well as between the fixing part and the wall of the connecting hole.

[0013] Furthermore, the water transmission channels include at least 6 channels evenly distributed around the periphery of the gas transmission channel.

[0014] Furthermore, the aperture of the water transmission channel is smaller than the aperture of the gas transmission channel.

[0015] Furthermore, the cross-sections of the gas transmission channel and the water transmission channel are circular or polygonal.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The ejection element is provided with an air delivery channel on the axis and a water delivery channel around it so that the water curtain can wrap the sandblasting powder mixed gas.

[0018] 2. By arranging both the air supply channel and the water supply channel on the ejection element, that is, forming the air supply channel and the water supply channel on one component, its processing difficulty is lower than that of the existing technology. During assembly, the ejection element can be assembled and connected to the output end of the nozzle body, so that the assembly process is relatively simplified.

[0019] 3. The air transmission channel and the water transmission channel are opened on a component ejection element. Compared with the existing technology, the air transmission channel is more stable. In this way, when high-speed gas passes through the air transmission channel, it is not easy to generate vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of the ejection element.

[0022] Figure 3 yes Figure 2 A cross-sectional view of the ejector element.

[0023] Numbers in the figure: 1, nozzle body; 2, air supply channel; 3, water supply channel; 4, connecting hole; 5, ejection element; 51, output base; 52, first boss; 53, second boss; 54, fixing part; 55, air supply channel; 56, water supply channel. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, technical solution and technical effect of the present invention, the present invention is further explained below with reference to the accompanying drawings and embodiments. It is also stated that the embodiments described below are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0026] like Figures 1 to 3 As shown, the novel sandblasting and scaling nozzle of this embodiment includes a nozzle body 1 and an ejection element 5. An air supply channel 2 and a water supply channel 3 are provided in the nozzle body 1. The ejection element 5 is arranged on the output end of the nozzle body 1. An air delivery channel 55 and a water delivery channel 56 are opened on the ejection element 5. The air delivery channel 55 is connected to the air supply channel 2, and the water delivery channel 56 is connected to the water supply channel 3. The air delivery channel 55 is located on the axis of the ejection element 5. A plurality of water delivery channels 56 are provided, and the plurality of water delivery channels 56 are arranged on the periphery of the air delivery channel 55.

[0027] In this embodiment, six water channels 56 are provided, evenly distributed around the periphery of the air channel 55. These channels disperse the water supplied by the water supply line 3, thereby forming a water curtain around the sandblasting powder mixed gas, enhancing the teeth cleaning treatment. The aperture of the water channel 56 is smaller than that of the air channel 55, resulting in a finer water mist and improving the teeth cleaning treatment effect. The cross-sections of the air channel 55 and the water channel 56 can be either circular or polygonal. As long as the air channel 55 can pass the sandblasting powder mixed gas and the water channel 56 can pass water, any cross-sectional shape can be used.

[0028] During the sandblasting treatment, the sandblasting powder mixed gas passes through the air supply pipe 2 and enters the air supply channel 55 of the ejection element 5, and is ejected from the center of the ejection element 5. The water passes through the water supply pipe 3 and enters the water supply channel 56 of the ejection element 5, and is ejected from the periphery of the ejection element 5, so that the outer water curtain wraps the sandblasting powder mixed gas in the middle, which can clean the dental plaque and tartar on the surface of the patient's teeth.

[0029] In an alternative embodiment, the ejection element 5 comprises an output base 51 and a first boss 52, arranged from bottom to top. Both an air supply channel 55 and a water supply channel 56 extend from the lower end of the output base 51 to the upper end of the first boss 52. Within the nozzle body 1, the air supply line 2 and the air supply channel 55 are connected by an external pipe. The ends of the pipe are connected to the nozzle body 1 and the ejection element 5 by an interference fit. This pipe also separates the water supply line 3.

[0030] In an optional embodiment, the ejection element 5 includes an output base 51, a first boss 52 and a second boss 53, the first boss 52 is arranged at the upper end of the output base 51, and the second boss 53 is arranged at the upper end of the first boss 52, the first boss 52 and the second boss 53 are coaxial, and the outer diameter of the second boss 53 is smaller than the outer diameter of the first boss 52.

[0031] Among them, the air supply channel 55 passes through the lower end of the output base 51 to the upper end of the spray element 5, and the water supply channel 56 passes through the lower end of the output base 51 to the upper end of the first boss 52, and the water supply channel 56 is evenly distributed around the outer circumference of the air supply channel 55.

[0032] Optionally, a fixing portion 54 is provided on the outer periphery of the upper end of the second boss 53, and the outer diameter of the fixing portion 54 is larger than the outer diameter of the second boss 53. The fixing portion 54 is fixedly connected to the nozzle body 1. Specifically, it can be through glue bonding or interference connection, so that the ejection element 5 can be fixed on the nozzle body 1.

[0033] The output base 51 , the first boss 52 and the second boss 53 of the ejection element 5 are integrally formed, so that the ejection element 5 has better anti-vibration performance, thereby facilitating noise reduction.

[0034] To enhance the stability of the ejection element 5 within the nozzle body 1, in one embodiment, a stepped connection hole 4 is provided at the output end of the nozzle body 1. The outer walls of the output base 51, the first boss 52, and the fixing portion 54 are all fixedly connected to the wall of the connection hole 4. A space for water inlet is provided between the second boss 53 and the connection hole 4. The output base 51 can be configured in a cylindrical, regular polygonal prism, or inverted frustum shape. As long as the connection hole 4 has the same shape, the output base 51 can be fixed within the connection hole 4 to secure the output base 51.

[0035] In another optional embodiment, sealing treatment is performed between the outer wall of the first boss 52 and the hole wall of the connecting hole 4, as well as between the fixing portion 54 and the hole wall of the connecting hole 4. In this embodiment, a sealing ring can be used for sealing, which can improve the sealing performance of the air supply channel 55 and the water supply channel 56.

[0036] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A novel sandblasting tooth cleaning machine nozzle, comprising a nozzle body and a spraying element, wherein the nozzle body is provided with an air supply channel and a water supply channel, characterized in that: The ejection element is arranged on the output end of the nozzle body, and an air delivery channel and a water delivery channel are opened on the ejection element. The air delivery channel is connected to the air supply channel, and the water delivery channel is connected to the water supply channel. The air delivery channel is located on the axis of the ejection element, and a plurality of water delivery channels are provided, and the plurality of water delivery channels are arranged on the periphery of the air delivery channel.

2. The novel sandblasting tooth scaler nozzle according to claim 1 is characterized in that: The ejection element comprises an output base and a first boss arranged from bottom to top, and the air delivery channel and the water delivery channel both penetrate from the lower end of the output base to the upper end of the first boss.

3. The novel sandblasting tooth scaler nozzle according to claim 2 is characterized in that: The output base is in the shape of a cylinder, a regular polygonal prism or an inverted frustum.

4. The novel sandblasting tooth scaler nozzle according to claim 2 is characterized in that: The ejection element further includes a second boss, which is disposed at the upper end of the first boss, the first boss and the second boss are coaxial, the outer diameter of the second boss is smaller than the outer diameter of the first boss, and the gas delivery channel passes through to the upper end of the second boss.

5. The novel sandblasting tooth scaler nozzle according to claim 4 is characterized in that: A fixing portion is disposed on the outer periphery of the upper end of the second boss. The outer diameter of the fixing portion is larger than the outer diameter of the second boss. The fixing portion is fixedly connected to the nozzle body.

6. The novel sandblasting tooth scaler nozzle according to claim 5 is characterized in that: A stepped connecting hole is provided on the output end of the nozzle body, and the first boss and the outer wall of the fixing portion are both fixedly connected to the hole wall of the connecting hole.

7. The novel sandblasting tooth scaler nozzle according to claim 6 is characterized in that: A sealing process is performed between the outer wall of the first boss and the hole wall of the connecting hole, and between the fixing portion and the hole wall of the connecting hole.

8. The novel sandblasting tooth scaler nozzle according to claim 1, characterized in that: The water delivery channels include at least 6 channels evenly distributed on the periphery of the gas delivery channel.

9. The novel sandblasting tooth scaler nozzle according to claim 1, characterized in that: The aperture of the water transmission channel is smaller than the aperture of the gas transmission channel.

10. The novel sandblasting tooth scaler nozzle according to claim 1, characterized in that: The cross-sections of the gas transmission channel and the water transmission channel are circular or polygonal.

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