Detachable spraying head for cold spraying

Abstract

The utility model discloses a detachable spraying head for cold spraying, which relates to the technical field of cold spraying and comprises four groups of spraying pipes arranged on a nozzle main body and a movable annular plate, four groups of sliding rods are fixedly connected to one side of the movable annular plate at equal intervals, and compression springs are sleeved on the outer sides of the four groups of sliding rods. Four sets of inner connecting plates are fixedly connected to the inner side of the movable annular plate at equal intervals, inserting rods are fixedly connected to the sides, close to the nozzle body, of the four sets of inner connecting plates, the periphery of the nozzle body is sleeved with an outer annular plate, a movable ring is fixedly connected to the inner side of the outer annular plate, and the ends, away from the movable annular plate, of four sets of sliding rods are in threaded connection with baffle discs; the spray nozzle has the advantages that dust and other impurities in the external environment can be prevented from entering the spray pipe after the cold spraying spray gun is used, the spray nozzle has a good dustproof protection function, the spray nozzle can be used next time, the spraying amount of paint can be adjusted in the cold spraying process, and operation is easy, convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of cold spraying, in particular to a detachable spraying head for cold spraying. Background Art

[0002] Cold spray technology is an advanced surface coating process, which is usually used to prepare thin film coatings on metal, ceramic, plastic and other substrates. Compared with traditional thermal spray technology, cold spray technology uses high-speed spray of solid granular materials to deposit coating materials on the substrate surface through inertial impact and surface adhesion to form a dense and uniform coating. In the cold spray process, spray guns and their nozzles are often required.

[0003] After searching, the patent number is CN217313973U, which discloses a nozzle for a spray gun. By setting a negative pressure plate and an adjusting plate to adjust the compressed air flow rate during actual use, the amount of material sprayed by the nozzle can be controlled to achieve different spraying effects. By adjusting the number of negative pressure through holes, the distance between two adjacent negative pressure through holes is shortened, thereby improving the uniformity of the compressed air sprayed from the negative pressure through holes, making the low pressure at the nozzle balanced and the paint sprayed evenly. However, after the cold spraying work is completed, the existing detachable spray head for cold spraying is usually exposed to the external environment together with the spray gun, and impurities such as dust in the external environment are easily accumulated inside the nozzle, which will have an adverse effect on the next use of the nozzle. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a detachable spray head for cold spraying. After the cold spraying work is completed, the existing detachable spray head for cold spraying is usually exposed to the external environment together with the spray gun, and impurities such as dust in the external environment are easily accumulated inside the nozzle, which will have an adverse effect on the next use of the nozzle.

[0005] In order to solve the above technical problems, the technical solution of the utility model is a detachable spray head for cold spraying, comprising four groups of nozzles arranged on a nozzle body, and also comprising a movable ring plate, one side of the movable ring plate is fixedly connected with four groups of sliding rods at equal intervals, the outer sides of the four groups of sliding rods are sleeved with compression springs, the inner side of the movable ring plate is fixedly connected with four groups of inner connecting plates at equal intervals, the four groups of inner connecting plates are fixedly connected with plug rods on one side close to the nozzle body, the outer periphery of the nozzle body is sleeved with an outer ring plate, and the inner side of the outer ring plate is fixedly connected with a movable ring.

[0006] As a further solution of the utility model: the ends of the four groups of sliding rods away from the movable ring plate are all threadedly connected with a baffle, and the compression spring is located between the outer ring plate and the baffle.

[0007] As a further solution of the utility model: four groups of sliding holes are opened through the outer ring plate at equal intervals, and the four groups of sliding rods are slidably connected to the outer ring plate through the sliding holes.

[0008] As a further solution of the utility model: an annular groove is provided on the outer side surface of the nozzle body, and the movable ring is located on the inner side of the annular groove.

[0009] As a further solution of the utility model: one side of the nozzle body is provided with four groups of placement grooves at equal intervals, and the four groups of insertion rods are respectively matched with the four groups of placement grooves.

[0010] As a further solution of the utility model: a rotating shaft is provided through the middle position of the nozzle body, a rotating disk is fixedly connected to the outer end of the rotating shaft, and four groups of rotating baffles are fixedly connected to the outer side of the rotating disk at equal intervals.

[0011] As a further solution of the utility model: a micro motor is clamped on the inner side of the nozzle body, and the rotating shaft is fixedly connected to the output end of the micro motor, and the four groups of rotating baffles are respectively matched with the four groups of nozzles.

[0012] The utility model adopts the above technical scheme, and has the following advantages compared with the prior art: the movable ring plate is moved away from the nozzle body by the cooperation of four groups of sliding rods and four groups of sliding holes, and the four groups of insertion rods are respectively moved out from the inside of the four groups of placement grooves, and then the outer ring plate and the movable ring plate are rotated together by the cooperation of the movable ring and the annular groove, and the four groups of compression springs on one side of the four groups of baffles cooperate with the four groups of inner connecting plates so that the four groups of insertion rods are respectively inserted into the inner sides of the four groups of nozzles, which can prevent dust and other impurities in the external environment from entering the interior of the nozzle after the cold spray gun is used, has a good dust protection function, and is beneficial to the next use of the nozzle.

[0013] By starting the micro motor inside the nozzle body to drive the rotating shaft to rotate, thereby driving the rotating disk to rotate, and then driving the four sets of rotating baffles to rotate together. At this time, the four sets of rotating baffles rotate at the outer ends of the four sets of nozzles respectively to change the nozzle size of the nozzle. The spraying amount of paint can be adjusted during the cold spraying process. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a detachable spray head for cold spraying in an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the movable ring plate and the outer ring plate in the embodiment of the utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the nozzle body in the embodiment of the utility model;

[0017] Figure 4 It is a top view of a detachable spray head for cold spraying in an embodiment of the utility model.

[0018] In the figure: 1. nozzle body; 2. nozzle; 3. outer ring plate; 4. movable ring plate; 5. sliding rod; 6. baffle plate; 7. compression spring; 8. sliding hole; 9. inner connecting plate; 10. plug rod; 11. placement groove; 12. movable ring; 13. annular groove; 14. micro motor; 15. rotating shaft; 16. rotating disk; 17. rotating baffle plate. DETAILED DESCRIPTION

[0019] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1, please refer to Figure 1-Figure 4 A detachable spray head for cold spraying comprises four groups of nozzles 2 arranged on a nozzle body 1, and also comprises a movable ring plate 4, one side of the movable ring plate 4 is fixedly connected with four groups of sliding rods 5 at equal intervals, the outer sides of the four groups of sliding rods 5 are sleeved with compression springs 7, the inner side of the movable ring plate 4 is fixedly connected with four groups of inner connecting plates 9 at equal intervals, the four groups of inner connecting plates 9 are fixedly connected with plug rods 10 on one side close to the nozzle body 1, the outer periphery of the nozzle body 1 is sleeved with an outer ring plate 3, and the inner side of the outer ring plate 3 is fixedly connected with a movable ring 12.

[0021] The ends of the four groups of sliding rods 5 away from the movable ring plate 4 are all threadedly connected with the baffle plate 6, the compression spring 7 is located between the outer ring plate 3 and the baffle plate 6, and four groups of sliding holes 8 are evenly spaced through the outer ring plate 3, and the four groups of sliding rods 5 are slidingly connected to the outer ring plate 3 through the sliding holes 8 respectively.

[0022] In this embodiment, the sliding rod 5 and the sliding hole 8 cooperate to facilitate the movement of the movable ring plate 4.

[0023] An annular groove 13 is formed on the outer side of the nozzle body 1 , and the movable ring 12 is located inside the annular groove 13 .

[0024] In this embodiment, the outer ring plate 3 is rotated by the cooperation between the movable ring 12 and the annular groove 13 .

[0025] One side of the nozzle body 1 is provided with four groups of placement grooves 11 at equal intervals, and the four groups of insertion rods 10 are respectively matched with the four groups of placement grooves 11 .

[0026] In this embodiment, four groups of placement grooves 11 are provided to place four groups of insertion rods 10 when the nozzle is working.

[0027] Specifically, the movable ring plate 4 is moved away from the nozzle body 1 by the cooperation of the four groups of sliding rods 5 and the four groups of sliding holes 8. At this time, the four groups of insertion rods 10 are respectively moved out from the inside of the four groups of placement grooves 11, and then the outer ring plate 3 and the movable ring plate 4 are rotated together by the cooperation of the movable ring 12 and the annular groove 13. The compression springs 7 on one side of the four groups of baffles 6 cooperate with the four groups of inner connecting plates 9 so that the four groups of insertion rods 10 are respectively inserted into the inner sides of the four groups of nozzles 2. This can prevent dust and other impurities in the external environment from entering the interior of the nozzle 2 after the use of the cold spray gun is finished. It has a good dust protection function and is beneficial to the next use of the nozzle.

[0028] Example 2, please refer to Figure 1-Figure 4 A detachable spray head for cold spraying, a rotating shaft 15 is provided through the middle position of the nozzle body 1, a rotating disk 16 is fixedly connected to the outer end of the rotating shaft 15, and four groups of rotating baffles 17 are fixedly connected to the outer side of the rotating disk 16 at equal intervals.

[0029] A micro motor 14 is clamped inside the nozzle body 1 , and a rotating shaft 15 is fixedly connected to the output end of the micro motor 14 . Four groups of rotating baffles 17 are matched with four groups of nozzles 2 respectively.

[0030] In this embodiment, the rotating shaft 15 is used to rotate four sets of rotating baffles 17 .

[0031] Specifically, the micro motor 14 on the inner side of the nozzle body 1 is started to drive the rotating shaft 15 to rotate, thereby driving the rotating disk 16 to rotate, and then driving the four groups of rotating baffles 17 to rotate together. At this time, the four groups of rotating baffles 17 rotate at the outer ends of the four groups of nozzles 2 respectively to change the nozzle size of the nozzle 2, so that the spraying amount of the paint can be adjusted during the cold spraying process, and the operation is simple and convenient.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A detachable spray head for cold spraying, comprising four groups of spray pipes (2) arranged on a nozzle body (1), characterized in that: It also includes a movable ring plate (4), one side of which is fixedly connected with four groups of sliding rods (5) at equal intervals, the outer sides of the four groups of sliding rods (5) are sleeved with compression springs (7), the inner side of the movable ring plate (4) is fixedly connected with four groups of inner connecting plates (9) at equal intervals, the four groups of inner connecting plates (9) are fixedly connected with a plug rod (10) on one side close to the nozzle body (1), the outer periphery of the nozzle body (1) is sleeved with an outer ring plate (3), and the inner side of the outer ring plate (3) is fixedly connected with a movable ring (12).

2. The detachable spray head for cold spraying according to claim 1, characterized in that: The ends of the four groups of sliding rods (5) away from the moving ring plate (4) are all threadedly connected with a baffle plate (6), and the compression spring (7) is located between the outer ring plate (3) and the baffle plate (6).

3. The detachable spray head for cold spraying according to claim 2, characterized in that: Four groups of sliding holes (8) are formed on the outer ring plate (3) at equal intervals, and the four groups of sliding rods (5) are slidably connected to the outer ring plate (3) through the sliding holes (8) respectively.

4. The detachable spray head for cold spraying according to claim 1, characterized in that: An annular groove (13) is provided on the outer side surface of the nozzle body (1), and the movable ring (12) is located on the inner side of the annular groove (13).

5. The detachable spray head for cold spraying according to claim 1, characterized in that: One side of the nozzle body (1) is provided with four groups of placement grooves (11) at equal intervals, and the four groups of insertion rods (10) are respectively matched with the four groups of placement grooves (11).

6. The detachable spray head for cold spraying according to claim 1, characterized in that: A rotating shaft (15) is provided through the middle of the nozzle body (1), the outer end of the rotating shaft (15) is fixedly connected to a rotating disk (16), and four groups of rotating baffles (17) are fixedly connected to the outer side of the rotating disk (16) at equal intervals.

7. The detachable spray head for cold spraying according to claim 6, characterized in that: A micro motor (14) is clamped on the inner side of the nozzle body (1), and a rotating shaft (15) is fixedly connected to the output end of the micro motor (14). The four groups of rotating baffles (17) are respectively matched with the four groups of nozzles (2).

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