A nozzle device for uniform coating

Abstract

The utility model discloses a nozzle device for uniform coating, including a nozzle body, the nozzle body including a nozzle column, the nozzle column including a nozzle end, a trapezoidal large bottom end of a conical sleeve fixedly connected to one end of the sleeve column, the sleeve column is sleeved on the nozzle column, and the inner side wall of the other end of the sleeve column is sealed and connected to the nozzle body; a reflux hole connected to a cylindrical channel is provided in the middle of the bottom side of the sleeve column. The utility model adopts a conical sleeve and sleeve column structure to achieve uniform distribution and effective recovery of liquid during the spraying process, and the nozzle end is located in the conical channel, and the liquid is sprayed through the trapezoidal small bottom opening to ensure that the edge of the spraying range is uniform, and the excess liquid is recovered through the reflux hole and the reflux pipe to avoid waste. And the device can be arranged in an array to form a continuous and uniform larger spraying range, which is suitable for large-area workpieces, so that the utility model not only improves the spraying efficiency and quality, but also reduces production costs and reduces environmental pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control and spraying equipment, in particular to a nozzle device for uniform coating. Background Art

[0002] The nozzle device is an important equipment widely used in various industrial spraying, atomization, injection and other processes.

[0003] The basic principle is to achieve a certain speed and pressure change of the fluid (liquid or gas) when passing through the nozzle through the internal structure design, thereby forming the effects of spraying, atomization or coating. In the coating process, the role of the nozzle device is particularly important, which directly affects the uniformity, density and quality of the coating.

[0004] However, in existing nozzle devices, in order to achieve uniform spraying, a series of complex operations and adjustments are usually required. For example, operators need to frequently adjust parameters such as the distance, angle and spray pressure between the nozzle and the workpiece to ensure that the coating can be evenly distributed on the workpiece surface. This not only increases the difficulty and complexity of the operation, but also reduces the spraying efficiency and quality.

[0005] In addition, during the spraying process, the existing nozzle device often sprays relatively less and uneven liquid at the edge position. This is mainly due to the uneven flow state of the fluid inside the nozzle and the uneven distribution of the spray force. There is no good solution to this problem in the prior art. Operators usually can only choose to accept or reject the spraying at this edge position. If you choose to accept, the edge position of the workpiece will have problems such as too thin coating, uneven coating, or even missing coating; if you choose not to accept, then the material body at the edge position needs to be wastefully processed, which not only causes a waste of resources, but also increases production costs.

[0006] For example, in the automotive manufacturing industry, the spraying process is crucial to the coating quality and appearance of the car body. However, due to the limitations of existing nozzle devices, operators often need to spend a lot of time and energy to adjust nozzle parameters and deal with spraying problems at edge positions when spraying the car body. This not only seriously affects production efficiency, but also increases manufacturing costs and quality risks.

[0007] Therefore, how to achieve that the nozzle device can spray liquid evenly and effectively during the spraying process, especially at the edge position, to avoid waste of resources and improve spraying efficiency and quality has become a technical problem to be solved by the present utility model. Utility Model Content

[0008] The technical problem solved by the utility model is to provide a uniformly coated nozzle device in view of the defects existing in the above-mentioned prior art, so as to solve the problems of uneven spraying at the edge position, liquid waste and low spraying efficiency of the nozzle device proposed in the above-mentioned background technology during the spraying process.

[0009] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0010] A uniform coating nozzle device comprises a nozzle body, the nozzle body comprises a nozzle column, the nozzle column comprises a nozzle end, and the uniform coating nozzle device further comprises a tapered sleeve and a sleeve column;

[0011] The outer contour of the axial section of the tapered sleeve is a trapezoid, and the trapezoid includes a large trapezoidal bottom end and a small trapezoidal bottom end;

[0012] The trapezoidal large bottom end of the conical sleeve is fixedly connected to one end of the sleeve column, the sleeve column is sleeved on the nozzle column, and the inner side wall of the other end of the sleeve column is sealed and connected to the nozzle body;

[0013] The sleeve column includes a cylindrical channel, and a reflux hole communicating with the cylindrical channel is provided in the middle of the bottom side of the sleeve column;

[0014] The tapered sleeve contains a tapered passage, and the nozzle tip is located in the tapered passage.

[0015] As a further solution of the utility model, the uniform coating nozzle device also includes a reflux pipe, one end of which is connected to the reflux hole.

[0016] As a further solution of the utility model, the tapered channel of the tapered sleeve includes a trapezoidal small bottom end opening, and the shape of the trapezoidal small bottom end opening is circular or square.

[0017] As a further solution of the utility model, the square is a square.

[0018] As a further solution of the utility model, the sealing connection position is sealed by a rubber pad in a snap-fit ​​connection manner or in a threaded connection manner.

[0019] As a further solution of the utility model, the tapered sleeve and the sleeve column are an integrated structure, and arc transitions are respectively provided at the edges and corners of the tapered sleeve and the sleeve column.

[0020] As a further solution of the utility model, the center line of the tapered sleeve, the center line of the sleeve column, and the center line of the nozzle column are on the same straight line.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the conical sleeve and sleeve column structure are adopted to achieve uniform distribution and effective recovery of liquid during the spraying process, and the nozzle end is located in the conical channel, and the liquid is sprayed through the trapezoidal small bottom opening to ensure uniform edges of the spraying range, and the excess liquid is recovered through the reflux hole and reflux pipe to avoid waste. And the device can be arranged in an array to form a continuous and uniform larger spraying range, which is suitable for large-area workpieces.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 For tapered sleeve and sleeve column and Figure 1 Schematic diagram of the structure when coordinated.

[0026] Figure 3 It is a schematic diagram of the structure when the opening of the small bottom end of the trapezoid is circular.

[0027] Figure 4 It is a schematic diagram of the structure when the trapezoidal small bottom opening is a square.

[0028] Figure 5 This is a schematic diagram of the structure when multiple nozzle bodies are arranged in an array.

[0029] Figure 6 For Figure 5 Based on this, a schematic diagram of the structure of a combination of spraying areas is shown in FIG.

[0030] Figure 7 It is a structural schematic diagram of the combination of a tapered sleeve and a sleeve column.

[0031] Figure 8 for Figure 7 AA cross-sectional view of

[0032] Fig. 9 For the nozzle column Figure 8 Schematic diagram of the location structure on the .

[0033] The reference numerals and names in the figures are as follows:

[0034] The nozzle body 1, the nozzle column 2, the nozzle end 3, the tapered sleeve 4, the sleeve column 5, the cylindrical channel 6, the reflux hole 7, the tapered channel 8, the reflux pipe 9 and the trapezoidal small bottom opening 10. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 In an embodiment of the utility model, a uniform coating nozzle device includes a nozzle body 1, the nozzle body 1 includes a nozzle column 2, the nozzle column 2 includes a nozzle end 3, and the uniform coating nozzle device also includes a tapered sleeve 4 and a sleeve column 5;

[0037] The outer contour of the axial section of the tapered sleeve 4 is a trapezoid, which includes a large trapezoidal bottom end and a small trapezoidal bottom end; the large trapezoidal bottom end of the tapered sleeve 4 is fixedly connected to one end of a sleeve column 5, the sleeve column 5 is sleeved on the nozzle column 2, and the inner side wall of the other end of the sleeve column 5 is sealed and connected to the nozzle body 1;

[0038] The sleeve column 5 includes a cylindrical channel 6, and a reflux hole 7 connected to the cylindrical channel 6 is provided in the middle of the bottom side of the sleeve column 5; the tapered sleeve 4 includes a tapered channel 8, and the nozzle end 3 is located in the nozzle channel. The uniform coating nozzle device also includes a reflux pipe 9, one end of which is connected to the reflux hole 7.

[0039] The tapered passage 8 of the tapered sleeve 4 comprises a trapezoidal small bottom opening 10, and the shape of the trapezoidal small bottom opening 10 is circular or square, wherein the square is a square.

[0040] The sealing connection position is sealed by a rubber pad in a snap-fit ​​connection or a threaded connection. The conical sleeve 4 and the sleeve column 5 are an integrated structure, and each corner of the conical sleeve 4 and the sleeve column 5 is provided with an arc transition. The center line of the conical sleeve 4, the center line of the sleeve column 5, and the center line of the nozzle column 2 are on the same straight line.

[0041] Embodiment 1:

[0042] The present embodiment provides a nozzle device for uniform coating, which is mainly used in the spraying process in the automobile manufacturing industry to solve the problems of uneven liquid spraying at the edge position and waste of spraying liquid in the spraying process in the prior art.

[0043] Specifically, the uniformly coated nozzle device includes a nozzle body 1, the nozzle body 1 includes a nozzle column 2, and the nozzle column 2 includes a nozzle end 3. In addition, the device also includes a tapered sleeve 4 and a sleeve column 5. The outer contour of the axial section of the tapered sleeve 4 is a trapezoid, and the trapezoid includes a trapezoidal large bottom end and a trapezoidal small bottom end. The trapezoidal large bottom end of the tapered sleeve 4 is fixedly connected to one end of the sleeve column 5, and the sleeve column 5 is sleeved on the nozzle column 2, and the inner side wall of the other end of the sleeve column 5 is sealed and connected to the nozzle body 1.

[0044] In this embodiment, the nozzle end 3 is disposed in the tapered channel 8 of the tapered sleeve 4. When the nozzle end 3 sprays liquid, the liquid can only be sprayed from the opening due to the restriction of the trapezoidal small bottom opening 10 of the tapered channel 8. This design ensures that the liquid has a more concentrated and uniform spray range during spraying.

[0045] In addition, in order to avoid waste, for the excess liquid sprayed on the inner wall of the tapered sleeve 4, the present embodiment utilizes the gravity of the liquid itself to make the liquid flow to the reflux hole 7 provided at the bottom side of the sleeve column 5. Then, the liquid flows into the reflux pipe 9 connected thereto through the reflux hole 7, and finally flows to a storage tank for collecting the reflux liquid. In this way, the problem of too little or uneven spraying of liquid at the edge of the workpiece is avoided, and the waste of liquid is effectively reduced.

[0046] It is worth mentioning that the conical sleeve 4 and the sleeve column 5 in this embodiment adopt an integrated structural design, and arc transitions are set at each corner, which not only enhances the overall structural strength, but also avoids stress concentration and wear problems that may occur during use.

[0047] In addition, in order to ensure that the liquid can flow back smoothly and reduce the risk of leakage, the center line of the tapered sleeve 4, the center line of the sleeve column 5 and the center line of the nozzle column 2 are designed to be on the same straight line. This design further improves the working stability and spraying quality of the nozzle device.

[0048] In summary, the uniformly coated nozzle device provided in this embodiment effectively solves the problems of uneven liquid spraying at the edge and waste of sprayed liquid in the prior art during the spraying process through ingenious structural design. In occasions such as the automobile manufacturing industry that require high-precision spraying, the nozzle device will greatly improve the spraying efficiency and quality, while reducing production costs and environmental pollution.

[0049] Example 2

[0050] This embodiment provides another uniform coating nozzle device in another application scenario, which is particularly suitable for workpieces that require large-area spraying, such as large mechanical parts, building walls or car bodies, etc. In these occasions, traditional nozzle devices often have difficulty in achieving uniform and continuous spraying effects, especially at the edge of the spraying range.

[0051] In order to solve this problem, this embodiment adopts a nozzle device design similar to that of Embodiment 1, but particularly emphasizes the array arrangement of multiple nozzle devices. Specifically, when multiple nozzle devices of the present invention are arranged in an array at a certain spacing, such as Figure 5 As shown, the distances between arrows A, B, C and D are equal. Since the liquid at each nozzle end 3 is sprayed outward in the shape of the trapezoidal small bottom opening 10 in the conical sleeve 4 (such as a square), and the relatively thin edge position of the spray forms a backflow due to the spraying on the inner side surface of the conical sleeve 4, there is no edge area where the spray is relatively thin.

[0052] In this case, if the trapezoidal small bottom opening 10 is square, the liquid sprayed by each nozzle will form a larger square spray range, such as Figure 6 As shown, in Figure 5 On the basis of, spraying is divided into range A, range B, range C and range D. When these spraying ranges are closely spliced ​​without overlapping, a continuous and uniform larger spraying range can be formed, thus adapting to larger workpieces.

[0053] In order to achieve this non-overlapping and seamless spraying effect, this embodiment particularly emphasizes the precise matching of the nozzle device array. For example, the distance and angle between each nozzle device can be precisely controlled to ensure that their spraying ranges do not overlap or leave gaps. In addition, advanced mechanical positioning technology or image processing technology can be used to monitor and adjust the position of the nozzle device in real time to achieve higher precision spraying.

[0054] The positional relationship between the nozzle and the trapezoidal small bottom opening 10 and the size of the spraying range defined by them are all within the technical scope known to those skilled in the art. For example, in practical applications, the size and shape of the spraying range can be controlled by adjusting the relative position between the nozzle and the trapezoidal small bottom opening 10 according to factors such as the size and shape of the workpiece, the viscosity of the liquid and the spraying speed. This adjustment can be achieved by means of mechanical structure design, control of an electric actuator or adjustment of a hydraulic / pneumatic system.

[0055] In general, this embodiment achieves uniform and continuous spraying of a wider range of workpieces by adopting an array arrangement of multiple uniformly coated nozzle devices. This design not only improves the spraying efficiency and quality, but also reduces production costs and environmental pollution. At the same time, due to the use of technical means such as precise matching and real-time monitoring and adjustment, the stability and reliability of the spraying process are ensured. Therefore, this embodiment has broad application prospects and market value.

[0056] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0057] It is obvious 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 implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A nozzle device for uniform coating, comprising a nozzle body, the nozzle body comprising a nozzle column, the nozzle column comprising a nozzle end, characterized in that: The uniformly coated nozzle device also includes a tapered sleeve and a sleeve column; The outer contour of the axial section of the tapered sleeve is a trapezoid, and the trapezoid includes a large trapezoidal bottom end and a small trapezoidal bottom end; The trapezoidal large bottom end of the conical sleeve is fixedly connected to one end of the sleeve column, the sleeve column is sleeved on the nozzle column, and the inner side wall of the other end of the sleeve column is sealed and connected to the nozzle body; The sleeve column includes a cylindrical channel, and a reflux hole communicating with the cylindrical channel is provided in the middle of the bottom side of the sleeve column; The tapered sleeve contains a tapered passage, and the nozzle tip is located in the tapered passage.

2. A nozzle device for uniform coating according to claim 1, characterized in that: The uniformly coated nozzle device also includes a return pipe, one end of which is connected to the return hole.

3. A uniform coating nozzle device according to claim 1, characterized in that: The tapered channel of the tapered sleeve comprises a trapezoidal small bottom end opening, and the shape of the trapezoidal small bottom end opening is circular or square.

4. A uniform coating nozzle device according to claim 3, characterized in that: The square is a square.

5. A uniform coating nozzle device according to claim 1, characterized in that: The sealing connection position is sealed by a rubber pad in a snap-fit ​​connection manner or in a threaded connection manner.

6. A uniform coating nozzle device according to claim 1, characterized in that: The conical sleeve and the sleeve column are an integrated structure, and arc transitions are arranged at the edges and corners of the conical sleeve and the sleeve column.

7. A uniform coating nozzle device according to claim 1, characterized in that: The center line of the tapered sleeve, the center line of the sleeve column, and the center line of the nozzle column are on the same straight line.

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