Straight handpiece with balanced hybrid water vapor fogging system

Abstract

The utility model provides a straight handpiece with a balanced mixing type water vapor fogging system, and belongs to the technical field of dental medical instruments. A water-air fogging system is arranged in the handle shell and comprises a water-air mixing seat, the rear part of the water-air mixing seat is connected with an air inlet pipe and a water inlet pipe, the front part of the water-air mixing seat is connected with a water-air mixing pipe, the front end of the water-air mixing pipe leads to the handpiece head, the front end part of the water inlet pipe penetrates into the rear end part of the water-air mixing pipe, and the front end part of the water-air mixing pipe penetrates into the rear end part of the water-air mixing pipe. An annular gap gas path is formed between the outer circle surface of the water inlet pipe and the inner circle surface of the water-gas mixing pipe which are sleeved together, and the outlet end of the gas inlet pipe is communicated with an inlet of the annular gap gas path through an inner hole path of the water-gas mixing seat. Water in the water inlet pipe and gas in the gas inlet pipe are mixed at the outlet of the annular gap, and the water flow direction at the outlet of the annular gap is the same as the gas flow direction, so that the gas pressure cannot hinder the water flow, the gas and the water are fully mixed to form water mist, and the water-gas mixing balance and uniformity are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dental medical instruments, and in particular relates to a straight handpiece with a balanced mixed water-gas misting system. Background Art

[0002] During use, dental handpieces need to be flushed with atomized water vapor to prevent high-speed needles from burning the teeth. The current water vapor misting system is arranged inside the housing of the dental handpiece. Its structure is as follows: a mixing seat is provided, the rear part of the mixing seat is connected to the air inlet pipe and the water inlet pipe, and the front part of the mixing seat is connected to the water-gas mixing pipe. The gas transported from the air inlet pipe and the water transported from the water inlet pipe are mixed in the water-gas mixing pipe to form water mist, which is transported to the front end of the dental handpiece for flushing. Due to the existing structure of the mixing seat, the gas in the air inlet pipe and the water in the water inlet pipe are mixed at the inlet of the water-gas mixing pipe in the mixing seat, and the gas and water are vertically mixed at the mixing point. In this case, the pressure of the gas is high, which will suppress the water flowing in at the same time, thereby reducing the water flow rate, making the water vapor used for flushing unbalanced, and reducing the moisture content of the flushing water mist formed, affecting the flushing effect. Therefore, it is necessary to propose improvements. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a straight handpiece with a balanced mixed water vapor misting system. The purpose of the utility model is to solve the problem that the water vapor mixing in the water vapor misting system of the prior art is unbalanced, resulting in insufficient moisture in the flushing water mist of the dental handpiece, which affects the flushing effect.

[0004] In order to achieve the above purpose, the technical solution adopted by this utility model is:

[0005] A straight handpiece with a balanced mixing water vapor misting system includes a handle shell, a water vapor misting system is installed inside the handle shell, the water vapor misting system includes a water vapor mixing seat, the rear part of the water vapor mixing seat is connected to an air inlet pipe and a water inlet pipe, the front part of the water vapor mixing seat is connected to a water vapor mixing pipe, the front end of the water vapor mixing pipe leads to the handpiece head, the front end part of the water inlet pipe penetrates into the interior of the rear end part of the water vapor mixing pipe, and an annular gap air path is formed between the outer circular surface of the water inlet pipe and the inner circular surface of the water vapor mixing pipe that are fitted together, and the outlet end of the air inlet pipe is connected to the inlet of the annular gap air path through the internal hole of the water vapor mixing seat.

[0006] Among them, the water-gas mixing seat is provided with an axial semi-permeation hole for connecting the air pipe, a radial connecting semi-permeation hole, a small-diameter permeation hole for connecting the water pipe and a large-diameter permeation hole for connecting the mixing pipe. The axes of the axial semi-permeation hole for connecting the air pipe and the small-diameter permeation hole for connecting the water pipe are parallel to each other and are both arranged at the back of the water-gas mixing seat. The axial semi-permeation hole for connecting the air pipe and the small-diameter permeation hole for connecting the water pipe are connected through the radial connecting semi-permeation hole. The large-diameter permeation hole for connecting the mixing pipe is arranged at the front of the water-gas mixing seat. The large-diameter permeation hole for connecting the mixing pipe and the small-diameter permeation hole for connecting the water pipe are coaxially connected.

[0007] Furthermore, the water inlet pipe is fixedly inserted into the small-diameter penetration hole of the water pipe connection, the rear end of the water-gas mixing pipe is fixedly inserted into the large-diameter penetration hole of the mixing pipe connection, the front part of the water inlet pipe extends into the rear part of the inner cavity of the water-gas mixing pipe and an annular gap air path is formed between the two, the front end of the air inlet pipe is inserted into the axial semi-penetration hole of the air pipe connection, and the front end of the air inlet pipe is provided with a notch connected to one end of the radially connected semi-penetration hole, and the other end of the radially connected semi-penetration hole is correspondingly connected to the inlet of the annular gap air path.

[0008] Furthermore, the outer wall of the water inlet pipe and the inner wall of the small-diameter through-hole connecting the water pipe, the outer wall of the water-gas mixing pipe and the inner wall of the large-diameter through-hole connecting the mixing pipe, and the outer wall of the air inlet pipe and the axial semi-through-hole connecting the air pipe are all fixed together by gluing.

[0009] Furthermore, a connecting sleeve is provided inside the handle shell, and the air inlet pipe and the water inlet pipe are both connected to corresponding holes on the connecting sleeve.

[0010] The advantages of this utility model compared with the prior art are:

[0011] In this solution, the front end portion of the water inlet pipe is inserted into the rear end portion of the water-gas mixing pipe, and an annular gap air path is formed between the outer circular surface of the water inlet pipe and the inner circular surface of the water-gas mixing pipe. The outlet end of the air inlet pipe is connected to the inlet of the annular gap air path through the internal hole of the water-gas mixing seat. The water in the water inlet pipe and the gas in the air inlet pipe are mixed at the outlet of the annular gap. Since the water flow direction and the gas flow direction at the outlet of the annular gap are the same, the gas pressure will not hinder the water flow, so that the gas and water are fully mixed to form water mist, thereby improving the balance and uniformity of water-gas mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic structural diagram of the water vapor misting system in the utility model;

[0014] Figure 3 It is a structural diagram of the water-gas mixing seat in the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] It should be noted that, as used herein, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements.

[0017] See also Figure 1-3 , describe the embodiments of the present utility model in detail.

[0018] Example: Straight handpiece with balanced mixed water vapor misting system, see Figure 1 As shown, it includes a handle shell 1, and a water vapor misting system is installed inside the handle shell 1. The water vapor misting system includes a water vapor mixing seat 2. The rear part of the water vapor mixing seat 2 is connected to an air inlet pipe 3 and a water inlet pipe 4. The front part of the water vapor mixing seat 2 is connected to a water vapor mixing tube 5. The front end of the water vapor mixing tube 5 leads to the head of the mobile phone. It is characterized in that the front end part of the water inlet pipe 4 penetrates into the interior of the rear end part of the water vapor mixing tube 5, and an annular gap air path 6 is formed between the outer circular surface of the water inlet pipe 4 and the inner circular surface of the water vapor mixing tube 5 that are fitted together, and the outlet end of the air inlet pipe 3 is connected to the inlet of the annular gap air path 6 through the internal hole of the water vapor mixing seat 2.

[0019] In this embodiment, when the water-gas misting system is working, the water in the water inlet pipe and the gas in the air inlet pipe are mixed at the outlet of the annular gap. Since the water flow direction and the gas flow direction at the outlet of the annular gap are the same, the gas pressure will not hinder the water flow, so that the gas and water are fully mixed to form water mist, ensuring the water mist flushing requirements of the dental handpiece.

[0020] In a specific embodiment, see Figure 2 and 3As shown, the water-gas mixing seat 2 is provided with an axial semi-permeation hole 2-1 for connecting the air pipe, a radially connecting semi-permeation hole 2-2, a small-diameter permeation hole 2-3 for connecting the water pipe and a large-diameter permeation hole 2-4 for connecting the mixing pipe. The axes of the axial semi-permeation hole 2-1 for connecting the air pipe and the small-diameter permeation hole 2-3 for connecting the water pipe are parallel to each other and are both arranged at the back of the water-gas mixing seat 2. The axial semi-permeation hole 2-1 for connecting the air pipe and the small-diameter permeation hole 2-3 for connecting the water pipe are connected through the radially connecting semi-permeation hole 2-2. The large-diameter permeation hole 2-4 for connecting the mixing pipe is arranged at the front of the water-gas mixing seat 2. The large-diameter permeation hole 2-4 for connecting the mixing pipe and the small-diameter permeation hole 2-3 for connecting the water pipe are coaxially connected.

[0021] The water inlet pipe 4 is fixedly inserted into the small-diameter penetration hole 2-3 of the water pipe connection, and the rear end of the water-gas mixing pipe 5 is fixedly inserted into the large-diameter penetration hole 2-4 of the mixing pipe connection. The front part of the water inlet pipe 4 extends into the rear part of the inner cavity of the water-gas mixing pipe 5 and an annular gap air path 6 is formed between the two. The front end of the air inlet pipe 3 is inserted into the axial semi-penetration hole 2-1 of the air pipe connection. The front end of the air inlet pipe 3 is provided with a notch connected to one end of the radially connected semi-penetration hole 2-2, and the other end of the radially connected semi-penetration hole 2-2 is correspondingly connected to the inlet of the annular gap air path 6.

[0022] In the above embodiment, gas enters the annular gap gas path sequentially through the air inlet pipe and radially communicating semi-permeable holes. Although gas is transported vertically at the radially communicating semi-permeable holes and the annular gap gas path inlet, the gas and water are separated and do not mix at this point, thus avoiding the problem of gas obstructing water flow due to vertical mixing. Through a simple nested structure of the water inlet pipe and the water-gas mixing tube, the gas and water mixing point is introduced to a position further forward in the water-gas mixing tube, ensuring that the water and gas flow directions are aligned. During mixing, the annular gas surrounds the water and moves forward to mix, not only ensuring balanced water-gas mixing but also improving the uniformity of the water-gas mixing.

[0023] Preferably, the outer wall of the water inlet pipe 4 and the inner wall of the small-diameter through-hole 2-3 connecting the water pipe, the outer wall of the water-gas mixing pipe 5 and the inner wall of the large-diameter through-hole 2-4 connecting the mixing pipe, and the outer wall of the air inlet pipe 3 and the axial semi-through-hole 2-1 connecting the air pipe are all fixed together by gluing.

[0024] In addition, a connecting sleeve 7 is provided inside the handle housing 1, and the air inlet pipe 3 and the water inlet pipe 4 are both connected to corresponding holes on the connecting sleeve 7, and working water and gas are introduced from the outside through the connecting sleeve. Among them, the connecting sleeve is a common component in dental handpieces.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A straight handpiece with a balanced mixing water vapor misting system, comprising a handle housing (1), wherein the handle housing (1) is internally provided with a water vapor misting system, wherein the water vapor misting system comprises a water vapor mixing seat (2), wherein the rear portion of the water vapor mixing seat (2) is connected to an air inlet pipe (3) and a water inlet pipe (4), and the front portion of the water vapor mixing seat (2) is connected to a water vapor mixing pipe (5), wherein the front end of the water vapor mixing pipe (5) leads to the handpiece head, and wherein: The front end portion of the water inlet pipe (4) penetrates into the interior of the rear end portion of the water-gas mixing pipe (5), and an annular gap air path (6) is formed between the outer circular surface of the water inlet pipe (4) and the inner circular surface of the water-gas mixing pipe (5) that are fitted together. The outlet end of the air inlet pipe (3) is connected to the inlet of the annular gap air path (6) through the internal hole of the water-gas mixing seat (2).

2. The straight handpiece with a balanced hybrid water vapor misting system according to claim 1, characterized in that: The water-gas mixing seat (2) is provided with an axial semi-permeation hole (2-1) for connecting an air pipe, a radially communicating semi-permeation hole (2-2), a small-diameter permeation hole (2-3) for connecting a water pipe, and a large-diameter permeation hole (2-4) for connecting a mixing pipe. The axes of the axial semi-permeation hole (2-1) for connecting an air pipe and the small-diameter permeation hole (2-3) for connecting a water pipe are parallel to each other and are both arranged at the rear of the water-gas mixing seat (2). The axial semi-permeation hole (2-1) for connecting an air pipe and the small-diameter permeation hole (2-3) for connecting a water pipe are communicated with each other via the radially communicating semi-permeation hole (2-2). The large-diameter permeation hole (2-4) for connecting a mixing pipe is arranged at the front of the water-gas mixing seat (2). The large-diameter permeation hole (2-4) for connecting a mixing pipe and the small-diameter permeation hole (2-3) for connecting a water pipe are coaxially communicated.

3. The straight handpiece with a balanced hybrid water vapor misting system according to claim 2, characterized in that: The water inlet pipe (4) is fixedly inserted into the small-diameter penetration hole (2-3) of the water pipe connection, the rear end of the water-gas mixing pipe (5) is fixedly inserted into the large-diameter penetration hole (2-4) of the mixing pipe connection, the front end of the water inlet pipe (4) extends into the rear part of the inner cavity of the water-gas mixing pipe (5) and an annular gap air path (6) is formed between the two, the front end of the air inlet pipe (3) is inserted into the axial semi-penetration hole (2-1) of the air pipe connection, the front end of the air inlet pipe (3) is provided with a notch connected to one end of the radially connected semi-penetration hole (2-2), and the other end of the radially connected semi-penetration hole (2-2) is correspondingly connected to the inlet of the annular gap air path (6).

4. The straight handpiece with a balanced hybrid water vapor misting system according to claim 3, characterized in that: The outer wall of the water inlet pipe (4) and the inner wall of the small-diameter through-hole (2-3) for connecting the water pipe, the outer wall of the water-gas mixing pipe (5) and the inner wall of the large-diameter through-hole (2-4) for connecting the mixing pipe, and the outer wall of the air inlet pipe (3) and the axial semi-through-hole (2-1) for connecting the air pipe are all fixed together by gluing.

5. The straight handpiece with a balanced hybrid water vapor misting system according to claim 1, characterized in that: A connecting sleeve (7) is provided inside the handle housing (1), and the air inlet pipe (3) and the water inlet pipe (4) are both connected to corresponding holes on the connecting sleeve (7).

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