Mounting structure of nozzle

Abstract

The utility model discloses a nozzle mounting structure, which comprises a spray pen main body, a nozzle and a spray head, the spray head is fixedly connected to the spray pen main body, an elastic piece is arranged at the front end of the spray pen main body, and the nozzle is axially propped between the elastic piece and the spray head; the outer wall of the nozzle is in clearance fit with the inner wall of the spray head, so that the nozzle is arranged in the spray head in a floating manner in the radial direction; a plurality of spiral grooves are evenly distributed in the outer wall of the nozzle in the circumferential direction and extend in the axial direction of the nozzle, one end of each spiral groove communicates with the gas channel in the air brush body, and the other end of each spiral groove communicates with the gas outlet of the spray head. According to the installation structure of the nozzle, the nozzle is installed in a flexible floating mode, the machining difficulty can be reduced, when compressed air enters the spiral groove, the spiral groove can guide the original linear motion of the air into spiral motion, the air flowing speed can be effectively increased, and the service life of the nozzle is prolonged. And therefore, the atomization effect is better.

Description

Technical Field

[0001] This utility model relates to the field of airbrush technology, and in particular to a nozzle mounting structure. Background Technology

[0002] An airbrush is an important painting tool that sprays paint in a mist to achieve uniform color application, and the nozzle is a crucial component of the airbrush. Common nozzle mounting structures on the market typically look like this: Figure 1 As shown, a nozzle connector 4' is pre-installed on the airbrush body 1', and then the nozzle 2' is threadedly connected to the nozzle connector 4'. After the nozzle 2' is installed, the nozzle head 3' is then threadedly fixed to the airbrush body 1'. The drawback of this installation structure is that the nozzle connector 4' results in more parts and higher costs. Furthermore, the installation process requires the use of specialized tools to press the nozzle connector 4' onto the airbrush body 1', which also leads to greater assembly difficulty and lower assembly efficiency.

[0003] In view of this, some beneficial attempts have been made in the existing technology. For example, a nozzle mounting structure disclosed in Chinese utility model patent (authorization announcement number CN205951601 U) mainly innovates by eliminating the nozzle connector and directly fixing the nozzle between the airbrush body and the printhead. The advantage of this mounting structure is that it simplifies the number of required parts, effectively reduces production costs, and improves assembly efficiency. However, its disadvantage is that since the nozzle is fixedly installed between the airbrush body and the printhead, the airbrush body, nozzle, and printhead must have a high degree of concentricity, which leads to high processing precision requirements and greater processing difficulty.

[0004] Therefore, it is necessary to make further improvements based on the existing technology. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a nozzle mounting structure that helps reduce processing difficulty.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] A nozzle mounting structure includes an airbrush body, a nozzle, and a printhead. The printhead is fixedly connected to the airbrush body. An elastic element is provided at the front end of the airbrush body. The nozzle is axially disposed between the elastic element and the printhead. The outer wall of the nozzle is clearance-fitted with the inner wall of the printhead, so that the nozzle is radially floatingly disposed within the printhead.

[0008] The outer wall of the nozzle is evenly provided with a plurality of spiral grooves along the circumferential direction. The spiral grooves extend along the axial direction of the nozzle. One end of the spiral groove is connected to the gas channel inside the inkjet body, and the other end of the spiral groove is connected to the air outlet of the nozzle.

[0009] Furthermore, the elastic element also serves as a sealing element, and the inkjet body has a liquid channel corresponding to the nozzle, with the elastic element isolating the liquid channel from the gas channel.

[0010] Furthermore, the elastic element is annular, and the rear end of the nozzle is provided with an extension portion, the rear end of the nozzle being sealed and inserted into the elastic element through the extension portion.

[0011] Furthermore, the nozzle has a stepped surface at its rear end, the front end of the elastic element is sealed to the stepped surface, and the rear end of the elastic element is sealed to the inner wall of the inkjet body.

[0012] Furthermore, a sealing ring is provided at the connection between the inkjet body and the nozzle.

[0013] Furthermore, the longitudinal section of the spiral groove is trapezoidal.

[0014] Furthermore, the longitudinal section of the spiral groove is triangular.

[0015] Furthermore, the longitudinal section of the spiral groove is rectangular.

[0016] The beneficial effects of this utility model are as follows: The nozzle mounting structure provided by this utility model is a further improvement on the existing technology. By setting an elastic element at the front end of the airbrush body, the nozzle is axially confined between the elastic element and the nozzle head, and the outer wall of the nozzle is clearance-fitted with the inner wall of the nozzle head, so that the nozzle is radially floating inside the nozzle head. Simultaneously, a spiral groove is provided on the outer wall of the nozzle to connect the gas channel and the air outlet. Several spiral grooves are evenly distributed circumferentially on the outer wall of the nozzle. By using the above-mentioned flexible floating installation of the nozzle, when compressed air flows sequentially through the gas channel and spiral grooves to the air outlet for atomization, the compressed air applies a radial force to the nozzle through the evenly distributed spiral grooves, allowing the nozzle to automatically align and center under the radial force of the compressed air. Compared with the existing fixed installation method of the nozzle, this floating nozzle installation structure reduces the concentricity requirements of the airbrush body, nozzle, and nozzle head during processing, thus reducing processing difficulty.

[0017] In addition, by setting up spiral grooves, when compressed air enters the spiral grooves, the spiral grooves will guide the original linear motion of the air into spiral motion, which can effectively increase the air flow speed and thus make the atomization effect better. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a nozzle mounting structure in the prior art.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the fitting and installation structure of the nozzle and spray head in this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the fitting and installation structure of the nozzle and spray head in this utility model. Figure 2 .

[0022] Figures 1-4 middle:

[0023] 1' Airbrush body; 2' Nozzle; 3' Printhead; 4' Nozzle connector;

[0024] 1. Airbrush body; 11. Gas channel; 12. Liquid channel; 2. Nozzle; 21. Spiral groove; 22. Extension; 23. Stepped surface; 3. Nozzle; 4. Sealing ring; 5. Elastic component. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 2-4 The nozzle mounting structure shown includes an airbrush body 1, a nozzle 2, and a nozzle head 3. The nozzle head 3 is threaded to the airbrush body 1. A sealing ring 4 is provided at the connection between the airbrush body 1 and the nozzle head 3 to ensure airtightness at the connection. An elastic element 5 is provided at the front end of the airbrush body 1. The elastic element 5 is preferably made of flexible rubber material. The nozzle 2 is axially positioned between the elastic element 5 and the nozzle head 3. The outer wall of the nozzle 2 and the inner wall of the nozzle head 3 are in clearance fit, so that the nozzle 2 is radially floating within the nozzle head 3. In this embodiment, to avoid large shaking of the nozzle 2, the radial floating clearance of the nozzle 2 relative to the nozzle head 3 is 1-2 microns.

[0027] The outer wall of the nozzle 2 is evenly provided with a number of spiral grooves 21 along the circumferential direction. The spiral grooves 21 extend along the axial direction of the nozzle 2. One end of the spiral groove 21 is connected to the gas channel 11 in the body of the spray gun 1, and the other end of the spiral groove 21 is connected to the air outlet 31 of the nozzle 3.

[0028] The number of spiral grooves 21 is preferably 3-13. In this embodiment, see... Figure 4To facilitate airflow, the longitudinal section of the spiral groove 21 is rectangular. Of course, in other embodiments, the number of spiral grooves 21 can be adjusted according to the specifications and model of the airbrush. Similarly, in other embodiments, the longitudinal section of the spiral groove 21 can be set to a trapezoidal, triangular, or other shapes as needed.

[0029] This utility model provides a nozzle mounting structure that further improves upon existing technology: An elastic element 5 is provided at the front end of the airbrush body 1, allowing the nozzle 2 to be axially confined between the elastic element 5 and the nozzle head 3. The outer wall of the nozzle 2 is also fitted with a clearance between the outer wall of the nozzle head 3 and the inner wall of the nozzle head 3, enabling the nozzle 2 to float radially within the nozzle head 3. Simultaneously, a spiral groove 21 is provided on the outer wall of the nozzle 2 to connect the gas channel 11 and the air outlet 31. Several spiral grooves 21 are evenly distributed circumferentially on the outer wall of the nozzle 2. By employing this flexible floating mounting, when compressed air flows sequentially through the gas channel 11 and the spiral grooves 21 to the air outlet 31 for atomization, the compressed air applies a radial force to the nozzle 2 through the evenly distributed spiral grooves 21, allowing the nozzle 2 to automatically align and center under the radial force of the compressed air. This floating installation of the nozzle 2, compared with the fixed installation of the nozzle 2 in the prior art, makes the concentricity requirements of the inkjet body 1, nozzle 2 and nozzle 3 relatively low during processing, thus helping to reduce the processing difficulty.

[0030] Furthermore, by setting the spiral groove 21, when compressed air enters the spiral groove 21, the spiral groove 21 guides the original linear motion of the air into a spiral motion, which can effectively increase the airflow speed and thus improve the atomization effect. For example, by using spiral air outlet, the length of the sprayed lines during airbrush atomization is increased, making it easier to draw lines; also, due to the increased airflow speed, the air spray is smoother, which can fully atomize the pigment to achieve a more delicate and smooth spraying effect, and also makes it less likely for pigment to accumulate at the outlet of nozzle 2 and the tip of the nozzle needle, making it easier to clean the airbrush. In view of the above advantages, the nozzle mounting structure provided by this utility model is suitable for the use of small-diameter airbrushes.

[0031] Preferably, in this embodiment, see Figure 1 As shown, the elastic element 5 also serves as a seal. The airbrush body 1 has a liquid channel 12 corresponding to the nozzle 2. Paint enters the nozzle 2 through the liquid channel 12 and is sprayed out from the front end of the nozzle 2, where it is atomized by compressed air flowing to the front end of the nozzle head 3. The elastic element 5 isolates the liquid channel 12 from the gas channel 11. By using the elastic element 5 as a seal, the airbrush structure is further simplified, and production costs are reduced.

[0032] Specifically, in this embodiment, see Figure 2 and Figure 3As shown, the elastic element 5 is annular, and the rear end of the nozzle 2 is provided with an extension 22. The rear end of the nozzle 2 is sealed and inserted into the elastic element 5 through the extension 22. By providing the extension 22 that inserts and engages with the elastic element 5, the rear end of the nozzle 2 can be positioned and installed with the help of the elastic element 5 during installation, making assembly more convenient and also improving the sealing between the nozzle 2 and the elastic element 5. The rear end of the nozzle 2 is provided with a stepped surface 23. The front end of the elastic element 5 is sealed and engaged with the stepped surface 23, and the rear end of the elastic element 5 is sealed and engaged with the inner wall of the airbrush body 1. By sealing the elastic element 5 against the inner wall of the airbrush body 1 and the stepped surface 23 of the nozzle 2, the sealing of the airbrush body 1, the nozzle 2, and the elastic element 5 can be improved. At the same time, the elastic element 5 provides better support for the nozzle 2, which is more conducive to improving the performance of the airbrush.

[0033] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A mounting structure of a nozzle, comprising a pen body, a nozzle and a spray head, the spray head being fixedly connected to the pen body, characterized in that: The front end of the spray pen body is provided with an elastic member, the nozzle is arranged between the elastic member and the spray head in the axial direction, the outer wall of the nozzle is in gap fit with the inner wall of the spray head, so that the nozzle is arranged floatingly in the radial direction in the spray head; The outer wall of the nozzle is uniformly provided with a plurality of spiral grooves in the circumferential direction, the spiral grooves extend along the axial direction of the nozzle, one end of the spiral grooves is communicated with the gas channel in the spray pen body, and the other end of the spiral grooves is communicated with the gas outlet of the spray head.

2. A nozzle mounting structure according to claim 1, wherein: The elastic member serves as a sealing member, the spray pen body is provided with a liquid channel corresponding to the nozzle, and the elastic member isolates the liquid channel from the gas channel.

3. A nozzle mounting structure according to claim 1 or 2, wherein: The elastic member is annular, the rear end of the nozzle is provided with an extension, and the rear end of the nozzle is sealingly inserted and fit with the elastic member through the extension.

4. A nozzle mounting structure according to claim 3, wherein: The rear end of the nozzle is provided with a stepped surface, the front end surface of the elastic member is sealingly fit with the stepped surface, and the rear end surface of the elastic member is sealingly fit with the inner wall of the spray pen body.

5. The mounting structure for a nozzle according to claim 1, wherein: The connection between the spray pen body and the spray head is provided with a sealing ring.

6. The mounting structure for a nozzle according to claim 1, wherein: The longitudinal section of the spiral groove is trapezoidal.

7. The mounting structure for a nozzle according to claim 1, wherein: The longitudinal section of the spiral groove is triangular.

8. The nozzle mounting structure of claim 1, wherein: The longitudinal section of the spiral groove is rectangular.

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