Replaceable sand blasting tail line structure and dental sand blasting machine

Abstract

This utility model relates to a replaceable sandblasting tail wire structure and a dental sandblasting machine, belonging to the field of dental instruments. It includes: a socket mechanism, a connecting sleeve, a plug mechanism, and a sealing gasket. The connecting sleeve is fitted onto the socket mechanism, the plug mechanism, and the sealing gasket. The socket mechanism and the plug mechanism correspond one-to-one with the two ends of the sealing gasket. The socket mechanism passes through the sealing gasket and communicates with the plug mechanism. One end of the connecting sleeve abuts against the plug mechanism, and its other end is engaged with the socket mechanism. This utility model facilitates the detachable connection of the sandblasting main unit and the sandblasting tail wire, thereby allowing users to easily replace clogged sandblasting tail wires themselves and reducing user maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of dental instruments, and in particular to a structure with a replaceable sandblasting tail wire and a dental sandblasting machine. Background Technology

[0002] A dental air polisher is a dental instrument used to whiten teeth, enhance their shine, and remove stains, plaque, tea stains, tobacco stains, and soft food debris. A dental air polisher requires a cable to connect the handle and the main unit to transfer abrasive powder and water to the handle and spray it from the nozzle. The cable is directly attached to the main unit.

[0003] For ease of use, dental sandblasting machines often have long sandblasting tail lines. During use, external environmental factors may cause blockages in the internal pipes of the sandblasting tail line, making it impossible to remove the tail line from the main unit for cleaning. Customers cannot replace it themselves and can only request on-site repair from the original manufacturer, resulting in high maintenance costs for users. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a structure with a replaceable sandblasting tail wire and a dental sandblasting machine to solve the above-mentioned problem.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A replaceable sandblasting tail wire structure includes: a socket mechanism, a connecting sleeve, a plug mechanism and a sealing gasket. The connecting sleeve is sleeved on the socket mechanism, the plug mechanism and the sealing gasket. The socket mechanism and the plug mechanism are respectively connected to the two ends of the sealing gasket. The plug mechanism passes through the sealing gasket and communicates with the socket mechanism. One end of the connecting sleeve is connected to the plug mechanism and the other end is engaged with the socket mechanism.

[0006] The beneficial effects of this utility model are as follows: Compared with the existing technology where the sandblasting tail wire is directly fixed to the sandblasting host, this utility model connects the socket mechanism and the plug mechanism, and simultaneously fits the connecting sleeve onto the socket mechanism and the plug mechanism. One end of the connecting sleeve abuts against the plug mechanism, and the other end is snapped into the socket mechanism. This facilitates the connection between the sandblasting host and the sandblasting tail wire through the socket mechanism and the plug mechanism, while also achieving a detachable connection between the sandblasting host and the sandblasting tail wire. This makes it convenient for users to replace the clogged sandblasting tail wire themselves, reducing the user's maintenance costs. The sealing gasket helps ensure the sealing performance when the sandblasting host and the sandblasting tail wire are connected, preventing water and sand powder from leaking into the connecting sleeve.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the socket mechanism includes: a socket body, a plurality of fixing pins and a socket connector, one end of the socket body abutting against one end of the sealing gasket and disposed within the connecting sleeve, the plurality of fixing pins being circumferentially spaced and fixedly installed on the side wall of the socket body and extending out of the connecting sleeve, and the socket connector being fixedly installed at the other end of the socket body.

[0009] The beneficial effects of adopting the above-mentioned further solution are: the socket body is conducive to connecting with the sandblasting host, and the sand powder and water in the sandblasting host are transmitted to the plug mechanism and the sandblasting tail line connected to the plug mechanism through the socket connection nozzle.

[0010] Furthermore, the socket body has a water channel and a sand channel arranged side by side along the axis inside, and both the water channel and the sand channel are through holes.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the water channel and sand channel facilitate the transfer of water and sand powder in the socket connector to the plug mechanism.

[0012] Furthermore, the socket connection nozzle includes a socket water pipe and a socket sand pipe, both of which are threaded to the other end of the socket body and are connected to the water channel and the sand channel respectively.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the socket water pipe and the socket sand pipe facilitate the transfer of water and sand powder in the sandblasting host to the plug mechanism and the sandblasting tail line connected to the plug mechanism, respectively.

[0014] Furthermore, the plug mechanism includes: a plug body, a fixing seat, and a plug connector. The fixing seat is fixedly installed at one end of the plug body and abuts against the other end of the sealing gasket. The fixing seat is fixedly sleeved on the plug connector, and the plug connector passes through the sealing gasket.

[0015] The beneficial effects of adopting the above-mentioned further solution are: the fixed seat is fixedly sleeved on the plug connector, which helps to improve the stability of the plug connector when transmitting sand and water; the sealing gasket helps to ensure that water and sand do not leak out from between the fixed seat and the socket body after the plug connector passes through the sealing gasket and connects the water channel and the sand channel.

[0016] Furthermore, the plug connector includes a plug water pipe and a plug sand pipe, which are arranged axially side by side and are connected to the water channel and the sand channel respectively.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the plug water pipe and plug sand pipe facilitate the transfer of water and sand powder from the socket water pipe and plug water pipe to the sandblasting tail line.

[0018] Furthermore, the plug body is a tubular structure, and a limiting platform is provided circumferentially on the side wall of the plug body. The outer diameter of the limiting platform is larger than the outer diameter of the plug body. The limiting platform is located inside the connecting sleeve. One end of the connecting sleeve has a limiting outer edge extending radially inward. The limiting platform abuts against the limiting outer edge.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the limiting platform is conducive to providing installation limit for the connecting sleeve on the outer ring of the socket mechanism, plug mechanism and sealing gasket. The outer edge of the limit is adapted to and abuts against the limiting platform, which helps to prevent the plug body from coming out of the connecting sleeve during operation.

[0020] Furthermore, the other end of the connecting sleeve has a plurality of fixing grooves spaced circumferentially on its side wall. Each fixing groove is an L-shaped through hole including a long side section and a short side section. One end of the short side section of the fixing groove is connected to the end of the connecting sleeve, and the other end of the short side section of the fixing groove is connected to one end of the long side section of the fixing groove. Each of the plurality of fixing grooves corresponds to and is fitted and engaged with a plurality of fixing pins.

[0021] The beneficial effects of adopting the above-mentioned further solution are: one end of the short side of the fixing groove is connected to the end of the connecting sleeve, and the other end of the short side of the fixing groove is connected to one end of the long side of the fixing groove, which is conducive to the fixing pin entering the long side of the fixing groove from the end of the connecting sleeve. The fixing groove and the fixing pin are matched and engaged, which is conducive to the limiting and fixing between the socket mechanism, the plug mechanism and the sealing gasket.

[0022] Furthermore, the socket mechanism has an outer ring thread circumferentially provided on the side wall of the end away from the plug mechanism.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the outer ring thread facilitates the fixing of the socket mechanism and the sandblasting host.

[0024] Another technical solution of this utility model to solve the above-mentioned technical problems is as follows: A dental sandblasting machine, including the above-mentioned replaceable sandblasting tail wire structure, sandblasting host and sandblasting tail wire, wherein the two ends of the replaceable sandblasting tail wire structure are connected to the sandblasting host and sandblasting tail wire respectively.

[0025] The beneficial effects of this utility model are: it facilitates the connection between the sandblasting host and the sandblasting tail wire through the socket mechanism and the plug mechanism, and also realizes the detachable connection between the sandblasting host and the sandblasting tail wire, thereby making it convenient for users to replace the blocked sandblasting tail wire themselves and reducing the user's maintenance costs. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0027] Figure 2 One axial cross-sectional view provided for an embodiment of this utility model;

[0028] Figure 3 Another axial cross-sectional view provided for an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the socket mechanism provided in an embodiment of the present utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Socket mechanism; 2. Connecting sleeve; 3. Plug mechanism; 4. Sealing gasket; 11. Socket body; 12. Fixing pin; 13. Socket connector; 21. Limiting outer edge; 22. Fixing groove; 31. Plug body; 32. Fixing base; 33. Plug connector; 111. Outer ring thread; 112. Water channel; 113. Sand channel; 131. Socket water pipe; 132. Socket sand pipe; 311. Limiting platform; 331. Plug water pipe; 332. Plug sand pipe. Detailed Implementation

[0032] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0033] like Figures 1 to 4 As shown, this embodiment provides a replaceable sandblasting tail cable structure, including: a socket mechanism 1, a connecting sleeve 2, a plug mechanism 3, and a sealing gasket 4. The connecting sleeve 2 is sleeved on the socket mechanism 1, the plug mechanism 3, and the sealing gasket 4. The socket mechanism 1 and the plug mechanism 3 correspond one-to-one with the two ends of the sealing gasket 4. The plug mechanism 3 passes through the sealing gasket 4 and communicates with the socket mechanism 1. One end of the connecting sleeve 2 abuts against the plug mechanism 3, and the other end is snapped into the socket mechanism 1.

[0034] The beneficial effects of this utility model are as follows: Compared with the existing technology where the sandblasting tail wire is directly fixed to the sandblasting host, this utility model connects the socket mechanism and the plug mechanism, and simultaneously fits the connecting sleeve onto the socket mechanism and the plug mechanism. One end of the connecting sleeve abuts against the plug mechanism, and the other end is snapped into the socket mechanism. This facilitates the connection between the sandblasting host and the sandblasting tail wire through the socket mechanism and the plug mechanism, while also achieving a detachable connection between the sandblasting host and the sandblasting tail wire. This makes it convenient for users to replace the clogged sandblasting tail wire themselves, reducing the user's maintenance costs. The sealing gasket helps ensure the sealing performance when the sandblasting host and the sandblasting tail wire are connected, preventing water and sand powder from leaking into the connecting sleeve.

[0035] Preferred, such as Figures 1 to 4 As shown, the socket mechanism 1 includes: a socket body 11, a plurality of fixing pins 12 and a socket connector 13. One end of the socket body 11 abuts against one end of the sealing gasket 4 and is disposed in the connecting sleeve 2. The plurality of fixing pins 12 are circumferentially spaced and fixedly installed on the side wall of the socket body 11 and pass through the connecting sleeve 2. The socket connector 13 is fixedly installed at the other end of the socket body 11.

[0036] It should be noted that in the preferred embodiment of this utility model, the fixing pin 12 is threadedly connected to the side wall of the socket body 11.

[0037] The advantages of adopting the above preferred solution are: the socket body is convenient to connect with the sandblasting host, and the sand powder and water in the sandblasting host are transmitted to the plug mechanism and the sandblasting tail line connected to the plug mechanism through the socket connection nozzle.

[0038] Preferred, such as Figure 3 As shown, the socket body 11 has a water channel 112 and a sand channel 113 arranged side by side along the axis inside, and both the water channel 112 and the sand channel 113 are through holes.

[0039] It should be noted that in the technical solution of this utility model, "axially side by side" means that the water channel 112 and the sand channel 113 are both arranged along the axial direction of the socket body 11, and the water channel 112 and the sand channel 113 are not connected.

[0040] The advantages of adopting the above-mentioned preferred solution are that the water channel and sand channel facilitate the transfer of water and sand powder in the socket connector to the plug mechanism.

[0041] Preferred, such as Figure 3 As shown, the socket connection nozzle 13 includes a socket water pipe 131 and a socket sand pipe 132. The socket water pipe 131 and the socket sand pipe 132 are both threadedly connected to the other end of the socket body 11, and are connected to the water channel 112 and the sand channel 113 respectively.

[0042] It should be noted that in the technical solution of this utility model, the end of the socket water pipe 131 away from the water channel 112 is connected to the water supply equipment in the sandblasting host, and the end of the socket sand pipe 132 away from the sand channel 113 is connected to the sand powder supply equipment in the sandblasting host.

[0043] The advantages of adopting the above preferred solution are: the socket water pipe and the socket sand pipe facilitate the transfer of water and sand powder in the sandblasting host to the plug mechanism and the sandblasting tail line connected to the plug mechanism, respectively.

[0044] Preferred, such as Figure 2 As shown, the plug mechanism 3 includes: a plug body 31, a fixing seat 32 and a plug connector 33. The fixing seat 32 is fixedly installed at one end of the plug body 31 and abuts against the other end of the sealing gasket 4. The fixing seat 32 is fixedly sleeved on the plug connector 33, and the plug connector 33 passes through the sealing gasket 4.

[0045] The advantages of adopting the above preferred solution are: the fixed seat is fixedly sleeved on the plug connector, which helps to improve the stability of the plug connector when transmitting sand and water; the sealing gasket helps to ensure that water and sand do not leak out between the fixed seat and the socket body after the plug connector passes through the sealing gasket and connects the water channel and the sand channel.

[0046] Preferred, such as Figure 3 As shown, the plug connector 33 includes a plug water pipe 331 and a plug sand pipe 332. The plug water pipe 331 and the plug sand pipe 332 are arranged axially side by side and are connected to the water channel 112 and the sand channel 113 respectively.

[0047] It should be noted that in the technical solution of this utility model, "axially arranged side by side" means that they are all arranged along the axial direction of the plug body 31, and the plug water pipe 331 and the plug sand pipe 332 are not connected.

[0048] The socket water pipe 131 and the plug water pipe 331 are respectively arranged at both ends of the water passage 112, and the socket water pipe 131 and the plug water pipe 331 are connected through the water passage 112; the socket sand pipe 132 and the plug sand pipe 332 are respectively arranged at both ends of the sand passage 113, and the socket sand pipe 132 and the plug sand pipe 332 are connected through the sand passage 113.

[0049] The plug water pipe 331 is located inside the plug body 31, and one end of it is connected to the water pipe in the sandblasting tail line. The plug sand pipe 332 is located inside the plug body 31, and one end of it is connected to the sand pipe in the sandblasting tail line.

[0050] The beneficial effect of adopting the above preferred solution is that the plug water pipe and plug sand pipe facilitate the transfer of water and sand powder from the socket water pipe and plug water pipe to the sandblasting tail line.

[0051] Preferred, such as Figure 2As shown, the plug body 31 is a tubular structure. A limiting platform 311 is provided circumferentially on the side wall of the plug body 31. The outer diameter of the limiting platform 311 is larger than the outer diameter of the plug body 31. The limiting platform 311 is located inside the connecting sleeve 2. One end of the connecting sleeve 2 has a limiting outer edge 21 extending radially inward. The limiting platform 311 abuts against the limiting outer edge 21.

[0052] The advantages of adopting the above preferred solution are: the limiting platform is conducive to providing installation limit for the connecting sleeve on the outer ring of the socket mechanism, plug mechanism and sealing gasket. The outer edge of the limiting platform is adapted to and abuts against the limiting platform, which helps to prevent the plug body from coming out of the connecting sleeve during operation.

[0053] Preferred, such as Figure 1 As shown, a plurality of fixing grooves 22 are provided circumferentially at intervals on the side wall of the other end of the connecting sleeve 2. The fixing groove 22 is an L-shaped through hole including a long side section and a short side section. One end of the short side section of the fixing groove 22 is connected to the end of the connecting sleeve 2, and the other end of the short side section of the fixing groove 22 is connected to one end of the long side section of the fixing groove 22. The plurality of fixing grooves 22 are adapted to and engaged with the plurality of fixing pins 12.

[0054] The advantages of adopting the above preferred solution are: one end of the short side of the fixing groove is connected to the end of the connecting sleeve, and the other end of the short side of the fixing groove is connected to one end of the long side of the fixing groove, which is conducive to the fixing pin entering the long side of the fixing groove from the end of the connecting sleeve. The fixing groove and the fixing pin are matched and engaged, which is conducive to the limiting and fixing between the socket mechanism, the plug mechanism and the sealing gasket.

[0055] Preferred, such as Figures 1 to 4 As shown, the socket mechanism 1 has an outer ring thread 111 circumferentially provided on the side wall of the end away from the plug mechanism 3.

[0056] It should be noted that in the technical solution of this utility model, the side wall of the socket body 11 away from the plug mechanism 3 is provided with an outer ring thread 111 in the circumferential direction.

[0057] The advantages of adopting the above preferred solution are: the outer ring thread facilitates the fixing of the socket mechanism and the sandblasting host.

[0058] A dental sandblasting machine includes the aforementioned replaceable sandblasting tail wire structure, a sandblasting main unit, and a sandblasting tail wire, wherein the two ends of the replaceable sandblasting tail wire structure are connected to the sandblasting main unit and the sandblasting tail wire respectively.

[0059] It should be noted that in the technical solution of this utility model, the socket connector 13 and the plug connector 33 are connected one-to-one with the sandblasting host and the sandblasting tail cable.

[0060] The beneficial effects of this utility model are: it facilitates the connection between the sandblasting host and the sandblasting tail wire through the socket mechanism and the plug mechanism, and also realizes the detachable connection between the sandblasting host and the sandblasting tail wire, thereby making it convenient for users to replace the blocked sandblasting tail wire themselves and reducing the user's maintenance costs.

[0061] The working process of this embodiment is described below:

[0062] like Figures 1 to 4 As shown, when the sandblasting tail wire becomes clogged, the user only needs to hold the socket body 11 and the plug body 31 with both hands respectively, and then rotate the socket body 11 and the plug body 31 in the opposite direction to make the fixing pin 12 move from the long side of the fixing groove 22 towards the short side until the fixing pin 12 is at the connection between the long side and the short side of the fixing groove 22. Finally, pull out the socket body 11 to make the fixing pin 12 move outward along the short side of the fixing groove 22.

[0063] After cleaning the sandblasting tail wire, the user needs to first pass the plug water pipe 331 and plug sand pipe 332 through the sealing gasket 4, and insert them one by one into the water channel 112 and sand channel 113, so that they are connected to the socket water pipe 131 and socket sand pipe 132 respectively; then, the socket body 11 and plug body 31 are aligned with the two ends of the sealing gasket 4; then, the fixing pin 12 is inserted from the connection between the short side of the fixing groove 22 and the port of the connecting sleeve 2 into the connection between the long side and the short side of the fixing groove 22; finally, the socket body 11 and plug body 31 are rotated in the opposite direction, so that the fixing pin 12 is moved within the long side of the fixing groove 22 to the end of the long side of the fixing groove 22 away from the short side of the fixing groove 22. At this point, the sandblasting tail wire replacement is complete.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A replaceable blasting tail line structure, characterized by, include: The socket mechanism (1), connecting sleeve (2), plug mechanism (3) and sealing gasket (4) are provided. The connecting sleeve (2) is fitted on the socket mechanism (1), the plug mechanism (3) and the sealing gasket (4). The socket mechanism (1) and the plug mechanism (3) are respectively connected to the two ends of the sealing gasket (4). The plug mechanism (3) passes through the sealing gasket (4) and communicates with the socket mechanism (1). One end of the connecting sleeve (2) is connected to the plug mechanism (3) and the other end is engaged with the socket mechanism (1).

2. The structure of the replaceable sandblasting tail line according to claim 1, characterized in that, The socket mechanism (1) includes: a socket body (11), a plurality of fixing pins (12) and a socket connector (13). One end of the socket body (11) abuts against one end of the sealing gasket (4) and is disposed in the connecting sleeve (2). The plurality of fixing pins (12) are circumferentially spaced and fixedly installed on the side wall of the socket body (11) and protrude through the connecting sleeve (2). The socket connector (13) is fixedly installed at the other end of the socket body (11).

3. The structure of the replaceable sandblasting tail line according to claim 2, characterized in that, The socket body (11) has a water channel (112) and a sand channel (113) arranged side by side along the axis inside, and both the water channel (112) and the sand channel (113) are through holes.

4. The structure of the replaceable sandblasting tail line according to claim 3, characterized in that, The socket connector (13) includes a socket water pipe (131) and a socket sand pipe (132). The socket water pipe (131) and the socket sand pipe (132) are both threaded to the other end of the socket body (11) and are connected to the water channel (112) and the sand channel (113) respectively.

5. The structure of the replaceable sandblasting tail line according to claim 3, characterized in that, The plug mechanism (3) includes: a plug body (31), a fixing seat (32) and a plug connector (33). The fixing seat (32) is fixedly installed on one end of the plug body (31) and abuts against the other end of the sealing gasket (4). The fixing seat (32) is fixedly sleeved on the plug connector (33), and the plug connector (33) passes through the sealing gasket (4).

6. The structure of the replaceable sandblasting tail line according to claim 5, characterized in that, The plug connector (33) includes a plug water pipe (331) and a plug sand pipe (332). The plug water pipe (331) and the plug sand pipe (332) are arranged axially side by side and are connected to the water channel (112) and the sand channel (113) respectively.

7. The structure of the replaceable sandblasting tail line according to claim 5, characterized in that, The plug body (31) is a tubular structure. A limiting platform (311) is provided circumferentially on the side wall of the plug body (31). The outer diameter of the limiting platform (311) is larger than the outer diameter of the plug body (31). The limiting platform (311) is located inside the connecting sleeve (2). One end of the connecting sleeve (2) has a limiting outer edge (21) extending radially inward. The limiting platform (311) abuts against the limiting outer edge (21).

8. The structure of the replaceable sandblasting tail line according to claim 2, characterized in that, The other end of the connecting sleeve (2) has a plurality of fixing grooves (22) spaced circumferentially on its side wall. The fixing groove (22) is an L-shaped through hole including a long side section and a short side section. One end of the short side section of the fixing groove (22) is connected to the end of the connecting sleeve (2), and the other end of the short side section of the fixing groove (22) is connected to one end of the long side section of the fixing groove (22). The plurality of fixing grooves (22) are adapted to and engaged with the plurality of fixing pins (12).

9. The structure of the replaceable sandblasting tail line according to any one of claims 1-8, characterized in that, The socket mechanism (1) has an outer ring thread (111) circumferentially provided on the side wall of the end away from the plug mechanism (3).

10. A dental air polishing machine, characterized in that, The structure includes the replaceable sandblasting tail line, the sandblasting host, and the sandblasting tail line as described in any one of claims 1-9, wherein the two ends of the replaceable sandblasting tail line structure are connected to the sandblasting host and the sandblasting tail line respectively.

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