Nozzle and mounting device

Abstract

The utility model discloses a nozzle and a mounting device, and relates to the technical field of fluid control, the nozzle comprises a spray pipe, and the spray pipe is provided with a flow channel communicated with a first end and a second end of the spray pipe; the farthest point-to-line segment length of the flow channel at the second end is longer than the farthest point-to-line segment length of the first end. According to the utility model, the spraying range is greatly increased during powder spraying, the phenomenon that the spraying center range is too thick during the movement of the spray gun is avoided, the spraying effect is not reduced while the spraying efficiency is improved and the material waste is avoided, and the non-uniform spraying and the too thick coating can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid control technical field, especially a nozzle and installation device. BACKGROUND

[0002] Aluminum bar cold spraying is a surface treatment technology used to improve the electrical conductivity and corrosion resistance of aluminum bars. At relatively low temperatures, high-speed gas is used to spray coating materials such as copper powder or other alloy powders onto the surface of aluminum bars, avoiding thermal damage to the aluminum substrate. Cold spraying forms a uniform and dense coating by high-energy impact of the coating material with the aluminum bar surface. Its advantages include better coating uniformity, superior adhesion, and significant corrosion resistance, while improving the electrical conductivity of aluminum bars and extending their service life. This technology is widely used in the power, electronics, and transportation industries, especially in the surface treatment of busbars, conductive aluminum bars, and radiators.

[0003] Cold spraying equipment usually includes a spray gun, a gas source, and powder. A high-pressure gas source mixes the powder and accelerates the powder material, forming a high-speed jet stream that is sprayed from the nozzle of the spray gun onto the surface of the aluminum bar.

[0004] However, the nozzle of existing cold spraying equipment is usually a hollow round bar structure. During the surface treatment of aluminum bars, it is difficult to ensure uniform spraying under multiple rows of spraying, and the coating is too thick during spraying, which affects the efficiency of spraying and causes unnecessary waste. SUMMARY

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the application to avoid obscuring the purpose of this section, the abstract, and the title, and such simplifications or omissions are not used to limit the scope of the utility model.

[0006] In view of the problems existing in the prior art, the utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a nozzle that avoids thick coating and improves spraying efficiency.

[0008] To solve the above technical problems, the utility model provides the following technical scheme: a nozzle comprising a spray pipe, the spray pipe being provided with a flow channel communicating the first end and the second end of the spray pipe;

[0009] The farthest point of the flow channel at the second end has a longer line segment length than the farthest point of the flow channel at the first end.

[0010] As a preferred scheme of the nozzle of the utility model, wherein: the spray pipe includes an inlet pipe and an outlet pipe, the first end is arranged at one end of the inlet pipe away from the outlet pipe, and the second end is arranged at one end of the outlet pipe away from the inlet pipe.

[0011] As a preferred scheme of the nozzle of the utility model, wherein: the spray pipe further includes an intermediate surface, and the intermediate surface is a connecting surface of the inlet pipe and the outlet pipe.

[0012] As a preferred scheme of the nozzle of the utility model, wherein: the inlet pipe is provided with an inlet hole, and the inlet hole is a section of the flow channel on the inlet pipe.

[0013] As a preferred scheme of the nozzle of the utility model, wherein: the outlet pipe is provided with an outlet hole, and the outlet hole is a section of the flow channel on the outlet pipe.

[0014] As a preferred scheme of the nozzle of the utility model, wherein: the inlet hole is circular at the first end; the outlet hole is rectangular at the second end; and the inlet hole and the outlet hole are connected to form a flow channel at the intermediate surface.

[0015] As a preferred scheme of the nozzle of the utility model, wherein: the outlet pipe is further provided with an air hole, the air hole is arranged at a position with minimum curvature in the middle part of the outlet pipe, and the position of the air hole on the outer wall of the outlet pipe is closer to the inlet pipe than the position of the air hole on the inner wall of the outlet pipe.

[0016] As a preferred scheme of the nozzle of the utility model, wherein: the flow channel is circular at the first end, the flow channel is elliptical at the second end, and the major axis of the elliptical is longer than the diameter of the circular.

[0017] As a preferred scheme of the nozzle of the utility model, wherein: the flow channel is circular at the first end, the flow channel is rectangular at the second end, the long side of the rectangular is longer than the diameter of the circular, and the middle part of the long side of the rectangular protrudes outwardly from the outer wall of the spray pipe.

[0018] The nozzle of the utility model has the following beneficial effects: the utility model greatly increases the spraying range during powder spraying, avoids thick spraying in the central range of the spray gun during movement, improves the spraying efficiency, avoids material waste, does not reduce the spraying effect, avoids uneven spraying, and avoids an excessively thick coating.

[0019] Another object of the utility model is to provide a mounting device, which aims to simplify the mounting of the nozzle.

[0020] To solve the above technical problems, the utility model further provides the following technical scheme: a mounting device, comprising a nozzle; and a connecting nozzle sleeved on the outer wall of the first end of the spray pipe.

[0021] The installation device has the advantages that the nozzle can be conveniently and quickly installed and disassembled, and the working efficiency of the spraying machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings. Among them:

[0023] Figure 1 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0024] Figure 2 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application. Figure 1 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0025] Figure 3 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0026] Figure 4 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application. Figure 3 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0027] Figure 5 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0028] Figure 6 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0029] Figure 7 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0030] Figure 8 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application. Figure 7 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0031] Figure 9 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0032] Figure 10 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0033] Figure 11 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application.

[0034] Figure 12 The drawings show the front view and the sectional view of the nozzle in the embodiment 1 and the embodiment 2 of the present application. Figure 9The structure shown is a fluid movement process diagram.

[0035] Figure 13 It is a top view of the nozzle in the embodiment 3 of the utility model.

[0036] Figure 14 It is a bottom view of the nozzle in the embodiment 3 of the utility model.

[0037] Figure 15 It is an assembly structure diagram of the installation device in the embodiment 5 of the utility model.

[0038] Figure 16 It is another view assembly structure diagram of the installation device in the embodiment 5 of the utility model. DETAILED DESCRIPTION

[0039] In order to make the above objects, features and advantages of the utility model more apparent, comprehensible and easily understood, the specific embodiments of the utility model will be described in detail below with reference to the drawings of the specification.

[0040] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0041] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics in at least one implementation of the utility model. "In one embodiment" appearing in different places in the specification does not refer to the same embodiment, nor is it an embodiment that is independent or selectively excluded from other embodiments.

[0042] Embodiment 1

[0043] Referring to Figures 1-4 For the first embodiment of the utility model, the embodiment provides a nozzle, which comprises a nozzle pipe 100, a flow channel T1 is arranged on the nozzle pipe 100 and connects a first end M1 and a second end M2 of the nozzle pipe 100.

[0044] The length of the line segment of the flow channel T1 at the farthest point of the second end M2 is longer than the length of the line segment of the farthest point of the first end M1.

[0045] Wherein, the first end M1 is at one end of the nozzle pipe 100, the second end M2 is at the other end of the nozzle pipe 100, the flow channel T1 connects the first end M1 and the second end M2 at both ends, and a streamline structure is adopted inside the flow channel T1, so as to avoid the turbulence of the internal fluid in the flowing process, and improve the smoothness and efficiency of the fluid.

[0046] The farthest point pair refers to a pair of points in a plane or space, and the distance between the two is the largest among all point pairs. For a set of points on a plane, the farthest point pair is usually found on the convex hull of the set of points. In the utility model, the farthest point pair line segment refers to the longest line segment of the inner diameter of the two end portions of the flow channel T1. Thus, when the fluid moves in the flow channel T1 from the first end M1 to the second end M2, the spraying range is extended in the direction of the farthest point pair line segment.

[0047] The first end M1 of the spray pipe 100 is used to receive the fluid and is connected to the spraying device, and the second end M2 is used to spray the fluid and is aimed at the workpiece, such as the surface of an aluminum plate.

[0048] To optimize the flow characteristics of the fluid, the shapes of the two ends of the flow channel T1 are different, and the first end M1 is circular for receiving the fluid into the flow channel T1. The circular shape can effectively guide the fluid to smoothly enter the flow channel T1, reduce the resistance and turbulence when the fluid enters, and thus improve the stability of the fluid flow. The second end M2 is in an elongated shape, and the farthest point pair line segment is perpendicular to the moving direction of the spray pipe 100. The purpose is to maximize the spraying area and improve the uniformity and coverage of the spray to reduce the number of spraying times and improve the spraying efficiency in practical applications. The cross section of the flow channel T1 gradually changes from a circular shape to an elongated shape from the first end M1 to the second end M2. This streamlined and gradually changing cross-sectional design can effectively change the shape of the fluid when it is sprayed into the shape of the flow channel T1 at the second end M2, thereby expanding the spraying range.

[0049] In summary, the prior art does not consider the thickness of the spray, resulting in an excessively thick coating during spraying and the need for more spraying gun back-and-forth movements, thereby affecting the overall processing efficiency. At the same time, the coating is too thick during spraying, especially the central coating, which is significantly thicker than the upper and lower ends, and more spraying gun back-and-forth movements are required. In the process of multiple spraying, the coating in the middle is thicker than on both sides, forming a wave-like coating, thereby affecting the overall spraying effect. Therefore, when spraying, the spray pipe 100 is used for the spraying gun. When the fluid formed by the mixture of high-pressure gas and copper powder enters the spray pipe 100 from the spraying gun, the fluid passes through the flow channel T1 with a gradually changing shape inside the spray pipe 100, and the columnar spray flow changes into an elongated spray flow. In the perpendicular direction of the moving direction of the spraying gun, the spraying range is greatly increased, while the spraying range in the moving direction of the spraying gun is not much increased. This can also avoid the central range of the spray being too thick when the spraying gun moves, thereby improving the spraying efficiency without reducing the spraying effect.

[0050] Example 2

[0051] Reference Figures 1-6 The spray pipe 100 includes an inlet pipe 101 and an outlet pipe 102, the first end M1 is arranged at one end of the inlet pipe 101 away from the outlet pipe 102, and the second end M2 is arranged at one end of the outlet pipe 102 away from the inlet pipe 101.

[0052] The inlet pipe 101 is a pipe connected with the spray gun, the first end of the flow channel T1 is circular, which can effectively guide the fluid to smoothly enter the flow channel T1, reduce the resistance and turbulence when the fluid enters, and thus improve the stability of the fluid flow; the gas and the copper powder enter the inlet pipe 101 after being mixed by the spray gun to form the fluid; the outlet pipe 102 is a pipe for discharging the fluid, the fluid enters the flow channel T1 from the first end M1 of the inlet pipe 101 and is sprayed out in a long and narrow shape from the second end M2 of the outlet pipe 102, which aims to maximize the spraying area during spraying to improve the uniformity and coverage of the spraying, thereby reducing the number of spraying in practical application and improving the spraying efficiency, and also avoiding the center range of the spraying being too thick when the spray gun moves; the shape of the flow channel T1 inside gradually changes from the circular shape of the first end M1 to the long and narrow shape of the second end M2, and the gradually changing cross-sectional design of the flow line type can effectively change the shape of the flow channel T1 at the second end M2 when the fluid is sprayed out, reduce the formation of turbulence, and thus improve the stability of the fluid flow, thereby expanding the spraying range.

[0053] Preferably, the spray pipe 100 further comprises an intermediate surface M3, which is a connecting surface of the inlet pipe 101 and the outlet pipe 102. The inlet pipe 101 is provided with an inlet hole H1, which is a section of the flow channel T1 on the inlet pipe 101. The outlet pipe 102 is provided with an outlet hole H2, which is a section of the flow channel T1 on the outlet pipe 102.

[0054] The flow channel T1 is a cylindrical inlet hole H1 between the intermediate surface M3 and the first end M1, and this section of the inlet pipe 101 is a circular pipe for connecting with the spray gun, so the shape and inner wall adopt the most common modeling to avoid the instability of the fluid to the greatest extent; the flow channel T1 from the intermediate surface M3 to the second end M2 forms the outlet hole H2, the cross section of the outlet hole H2 gradually changes from the circular shape of the intermediate surface M3 to the long and narrow shape of the second end M2 along the direction of fluid movement, which is also to avoid causing instability of the fluid to expand the spraying area in the vertical direction of the spray gun moving direction and reduce the thickness of the coating at the center of the spray gun; the outer diameter of the inlet pipe 101 at the intermediate surface M3 is smaller than the outer diameter of the outlet pipe 102 at the intermediate surface M3, because the principle of cold spraying process is that the high-speed gas shock adsorbs on the surface of the aluminum row so that the powder is adsorbed on the surface, and the gas mixed with the powder collides with the inner wall during the gas shock process, which causes the inner cavity to wear and tear, and increasing the wall thickness can improve the durability of the nozzle.

[0055] Preferably, the inlet hole H1 is circular at the first end M1; the outlet hole H2 is rectangular at the second end M2; the inlet hole H1 and the outlet hole H2 are connected to form the flow channel T1 at the intermediate surface M3.

[0056] The diameter of the circular inlet hole H1 is shorter than the long side of the rectangular outlet hole H2, so that the fluid tends to become long and narrow during the movement along the flow channel T1, and the long direction is perpendicular to the moving direction of the spray gun, so that the spraying range in the direction perpendicular to the moving direction of the spray gun is enlarged, and the range in the moving direction of the spray gun changes little, so that the center part of the spraying is not too thick compared with the two sides.

[0057] Preferably, the outlet pipe 102 is further provided with an air hole H3, which is arranged at the position with the minimum curvature in the middle part of the outlet pipe 102, and the position of the air hole H3 on the outer wall of the outlet pipe 102 is closer to the inlet pipe 101 than the position of the air hole H3 on the inner wall of the outlet pipe 102.

[0058] The air hole H3 is arranged in the middle of the outlet pipe 102 along the direction of the fluid, because the fluid moves in the flow channel T1, and as the shape of the flow channel T1 changes, the fluid will generate pressure on the side of the flow channel T1, causing abrasion, and the closer to the second end M2, the flatter the flow channel T1, the greater the abrasion. Therefore, the air hole H3 is arranged in the middle part of the outlet pipe 102, and at the position with the minimum curvature in the middle part, and at the same time, the flow channel T1 expands in one direction to form a long and narrow shape, and the two sides perpendicular to this direction will inevitably be subjected to greater pressure, thereby causing increased abrasion. Therefore, after the air hole H3 is arranged in the middle of the outlet pipe 102, air enters the flow channel T1 from the air hole H3, which not only dilutes the density of the copper powder on this side, but also releases the stress in this part, thereby making the fluid more uniform, reducing the abrasion of the outlet pipe 102, and prolonging the service life of the device.

[0059] In summary, the prior art does not consider the thickness of the spraying, resulting in an excessively thick coating during spraying, and the spray gun needs to make more round trips, thereby affecting the overall processing efficiency; at the same time, the coating is too thick during spraying, especially the center coating, which is obviously thicker than the upper and lower ends, and the spray gun needs to make more round trips, and in the process of multiple spraying, the coating in the middle is thicker than on the two sides, forming a wave-like coating, thereby affecting the overall spraying effect. Therefore, when spraying, the spray pipe 100 is used for the spray gun, and when the fluid formed by the mixture of high-pressure gas and copper powder is sprayed from the spray gun, the fluid flows from the inlet hole H1 to the flow channel T1, and then is sprayed from the outlet hole H2 through the flow channel T1. The fluid passes through the flow channel T1 with a slowly changing shape inside the spray pipe 100, and changes from a columnar jet to a long and narrow jet, the spraying range in the direction perpendicular to the moving direction of the spray gun is greatly increased, and the spraying range in the moving direction of the spray gun is not much increased, so that the center range of the spraying is not too thick when the spray gun moves, the spraying efficiency is improved, and the spraying effect is not reduced. At the same time, the arrangement of the air hole further uniformizes the fluid and reduces the abrasion of the outlet hole H2 at the narrow part of the second end M2.

[0060] Example 3

[0061] Referring toFigures 11-14 For the third embodiment of the utility model, the flow channel T1 is circular at the first end M1, and the flow channel T1 is elliptical at the second end M2, and the long axis of the ellipse is longer than the diameter of the circle.

[0062] Wherein, the first end M1 is at one end of the spray pipe 100, the second end M2 is at the other end of the spray pipe 100, the flow channel T1 is communicated with the first end M1 and the second end M2 at both ends, and a streamline structure is adopted inside the flow channel T1, which gradually changes from the circle at the first end M1 to the ellipse at the second end M2, without sharp corners, avoiding turbulence of the internal fluid in the flowing process, and improving the smoothness and efficiency of the fluid.

[0063] The first end M1 of the spray pipe 100 is used to receive the fluid and is connected with the spraying device, and the second end M2 is used to spray the fluid and is aligned with the work material, such as the surface of the aluminum row.

[0064] In order to optimize the flow characteristics of the fluid, the shapes of the flow channel T1 at both ends are different, which is circular at the first end M1 side for receiving the fluid into the flow channel T1, and the circular shape can effectively guide the fluid to enter the flow channel T1 smoothly, reduce the resistance and turbulence when the fluid enters, and thus improve the stability of the fluid flow. At the second end M2 side, it is elliptical, and in use, the long axis of the ellipse is perpendicular to the moving direction of the spray pipe 100, which aims to maximize the area of the fluid during spraying, improve the uniformity and coverage of the spraying, and thus reduce the number of spraying in actual application and improve the spraying efficiency. The cross section of the flow channel T1 gradually changes from the circle at the first end M1 to the ellipse at the second end M2. The cross section of the streamline gradually changes, which can effectively change the shape of the fluid in the flow channel T1 at the second end M2 when the fluid is sprayed, so as to expand the spraying range.

[0065] Embodiment 4

[0066] Reference Figures 7-10 For the fourth embodiment of the utility model, the flow channel T1 is circular at the first end M1, and the flow channel T1 is rectangular at the second end M2, and the long side of the rectangle is longer than the diameter of the circle, and the long side of the rectangle protrudes outward from the outer wall of the spray pipe 100.

[0067] Wherein, the first end M1 is at one end of the spray pipe 100, the second end M2 is at the other end of the spray pipe 100, the flow channel T1 is communicated with the first end M1 and the second end M2 at both ends, and a streamline structure is adopted inside the flow channel T1, which gradually changes from the circle at the first end M1 to the long side of the rectangle protruding at the second end M2, reducing the wear of the long side of the rectangle protruding at the long side, and improving the service life of the nozzle.

[0068] The first end M1 of the spray pipe 100 is used to receive the fluid and is connected with the spraying device, and the second end M2 is used to spray the fluid and is aligned with the work material, such as the surface of the aluminum row.

[0069] To optimize the flow characteristics of the fluid, the shapes of the two ends of the flow channel T1 are different, the first end M1 side is circular for accepting fluid into the flow channel T1, which can effectively guide the fluid to enter smoothly, reduce the resistance and turbulence when the fluid enters, and thus improve the stability of the fluid flow. The second end M2 side is a rectangle with a long side in the middle of the rectangle, which is perpendicular to the moving direction of the spray pipe 100 in use, and the purpose is to make the fluid as large as possible in the area perpendicular to the moving direction of the spray pipe 100 when spraying, to improve the uniformity and coverage of the spray, thereby reducing the number of spraying in actual application and improving the spraying efficiency. The cross section of the flow channel T1 gradually changes from a circular shape to a rectangle with a long side in the middle of the rectangle from the first end M1 to the second end M2. This streamlined and gradually changing cross section design can effectively change the shape of the fluid in the flow channel T1 at the second end M2 when the fluid is sprayed out, thereby expanding the spraying range. During the process of the fluid passing through the flow channel T1, the fluid has diffusion in the direction of the long side of the rectangle, which will reduce the stress at this point, and there is no diffusion in the direction of the short side, so the fluid has the greatest stress on the long side, especially the middle section of the long side. The long side in the middle is protruded to reduce the stress at this point and improve the service life of the nozzle.

[0070] Embodiment 5

[0071] Reference Figures 15-16 For the fifth embodiment of the utility model, the embodiment further provides an installation device, which comprises a connecting nozzle 200 sleeved on the outer wall of the first end M1 of the spray pipe 100.

[0072] The connecting nozzle 200 is provided with an air inlet, a blowing port, a powder inlet and a tightening port. The air inlet is arranged at one end of the connecting nozzle 200, the blowing port is arranged at the other end of the connecting nozzle 200, the powder inlet is arranged at one side of the connecting nozzle 200, and the tightening port is arranged at the other side of the connecting nozzle 200. The air inlet and the blowing port are oppositely arranged. The air inlet is connected with the air pressure tank, the powder inlet is connected with the copper powder discharge pipe, the blowing port is sleeved on the spray pipe 100, the tightening port is threadedly connected with the wing nut, and the spray pipe 100 is fastened to the connecting nozzle 200 through the wing nut.

[0073] In use, the first end M1 of the spray pipe 100 is inserted into the blowing port, and the spray pipe 100 is fixed by the wing nut from the tightening port. The high-pressure gas is blown out from the air inlet, the copper powder from the powder inlet is driven, and the mixed fluid is blown out from the blowing port. The fluid enters the flow channel T1 from the first end M1 of the spray pipe 100 and is sprayed out from the second end M2.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application. The technical solutions should be covered in the scope of the claims of the present application.

Claims

1. A nozzle characterized by: The nozzle comprises a nozzle pipe (100) and a connecting nozzle (200) sleeved on the outer wall of the first end (M1) of the nozzle pipe (100). The length of the line segment of the farthest point pair of the flow channel (T1) at the second end (M2) is longer than the length of the line segment of the farthest point pair of the flow channel (T1) at the first end (M1).

2. The nozzle according to claim 1, wherein: The nozzle pipe (100) comprises an inlet pipe (101) and an outlet pipe (102), the first end (M1) is arranged at one end of the inlet pipe (101) away from the outlet pipe (102), and the second end (M2) is arranged at one end of the outlet pipe (102) away from the inlet pipe (101).

3. The nozzle according to claim 2, wherein: The nozzle pipe (100) further comprises an intermediate surface (M3), and the intermediate surface (M3) is a connecting surface of the inlet pipe (101) and the outlet pipe (102).

4. The nozzle according to claim 2, wherein: The inlet pipe (101) is provided with an inlet hole (H1), and the inlet hole (H1) is a section of the flow channel (T1) on the inlet pipe (101).

5. The nozzle according to claim 4, wherein: The outlet pipe (102) is provided with an outlet hole (H2), and the outlet hole (H2) is a section of the flow channel (T1) on the outlet pipe (102).

6. The nozzle according to claim 5, wherein: The inlet hole (H1) is circular at the first end (M1), the outlet hole (H2) is rectangular at the second end (M2), and the inlet hole (H1) and the outlet hole (H2) are connected to form the flow channel (T1) at the intermediate surface (M3).

7. The nozzle according to any one of claims 2, 4 or 6, wherein: The outlet pipe (102) is further provided with an air hole (H3), the air hole (H3) is arranged at a position with the smallest curvature in the middle of the outlet pipe (102), and the position of the air hole (H3) on the outer wall of the outlet pipe (102) is closer to the inlet pipe (101) than the position of the air hole (H3) on the inner wall of the outlet pipe (102).

8. The nozzle according to any one of claims 1, 2, 4 or 6, wherein: The flow channel (T1) is circular at the first end (M1), and the flow channel (T1) is elliptical at the second end (M2), and the length of the major axis of the ellipse is longer than the diameter of the circle.

9. The nozzle according to any one of claims 1, 2, 4 or 6, wherein: The flow channel (T1) is circular at the first end (M1), and the flow channel (T1) is rectangular at the second end (M2), the length of the long side of the rectangle is longer than the diameter of the circle, and the middle part of the long side of the rectangle protrudes outwardly from the outer wall of the nozzle pipe (100). The nozzle comprises a nozzle pipe (100) and a connecting nozzle (200) sleeved on the outer wall of the first end (M1) of the nozzle pipe (100).

10. A mounting device characterized by: ​

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