Spray gun suitable for spraying ultra-small and ultra-deep plasma inner holes

Abstract

The invention relates to the field of spray guns, and discloses a spray gun suitable for spraying ultra-small and ultra-deep plasma inner holes. Comprising an electrode tip, a rear insulator, an electrode tip lengthening rod, an electrode tip fixing piece outer-layer plastic pipe, a plastic long pipe fixing pipe, an insulator, a cathode, an anode, a bakelite ring, an inner hole gun nozzle, a nozzle cap, a nozzle sleeve, a nozzle sleeve mounting pipe, a nozzle plastic sleeve and a double-way replacement mechanism. The electrode tip is connected with the electrode tip extension rod, the electrode tip extension rod is connected with the electrode tip fixing piece outer layer plastic pipe, the plastic long pipe fixing pipe is connected with the electrode tip fixing piece outer layer plastic pipe, and the insulator is installed on the plastic long pipe fixing pipe. The spraying device has the following advantages and effects that the spraying device can adapt to spraying of inner holes with different depths by replacing the outer gun barrel, the first powder feeding pipe and the second powder feeding pipe with different lengths, and the spraying effect and the spraying powder utilization efficiency are remarkably improved by adopting a double-path powder feeding structure.

Description

Technical Field

[0001] The invention relates to the technical field of spray guns, and in particular to a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep areas. Background Art

[0002] A plasma spray gun is a device that continuously sprays low-temperature plasma gas flow, which is used for surface modification of materials. Plasma is the fourth state of matter. It originates from the gaseous state but is different from the gaseous state. When the gaseous substance is heated to a certain temperature, the electrons outside the atomic nucleus will escape from the original orbit and become free electrons. The number of escaped electrons and the atomic nuclei that lose electrons is equal, making the number of positive charges and negative charges of the entire system equal, so it is called plasma; the resulting active particles contain a large number of electrons, ions and free radicals. These active particles collide and contact the surface of the treated object, and corresponding physical or chemical reactions occur, which changes the properties of the material surface or gives it new functions, so as to achieve its modification purpose and meet the needs of practical applications.

[0003] In the prior art, a Chinese patent with publication number CN115287578A discloses a plasma spray gun head, including a gun body, the gun body is divided into an ionization chamber and an air flow channel, a fixing seat is fixedly connected to the inner wall of one side of the gun body located in the ionization chamber, and the fixing seat is fixedly connected to the cathode head, the side wall of the gun body located around the fixing seat is fixedly sleeved with a gas pipe, and an anode block is fixedly connected to the inner wall of the other side of the ionization chamber corresponding to the cathode head. The present invention arranges four powder tubes evenly inside the gun body, and uses an arc tube to connect each powder tube, so that in the process of injecting spray powder into the air flow channel, the powder injected from the lower powder tube is ejected from various angles of the air flow channel through the arc tube, thereby ensuring the uniformity of powder diffusion, and at the same time, a rotatable rotating part is arranged at the intersection of the air flow channel and the powder tube, so that the rotating part rotates under the impact of the spray powder, and drives the spray powder to obliquely intersect with the high-speed air flow.

[0004] When in use, the above-mentioned device utilizes a nozzle to spray the heated material onto the material to achieve the purpose of spraying. However, in actual use, it adopts a single-channel powder feeding structure, which will reduce the spraying effect and the utilization efficiency of the spraying powder. In addition, it is not convenient to spray deep and small inner holes. Therefore, it is necessary to design a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep materials to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep materials, so as to solve the above problems.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep, comprising: Electrode head, rear insulator, electrode head extension rod, outer plastic tube of electrode head fixing part, plastic long tube fixing tube, insulator, cathode, anode, bakelite ring, inner hole gun nozzle, nozzle cap, nozzle sleeve, nozzle sleeve mounting tube, nozzle plastic sleeve and double-way replacement mechanism; The electrode head is connected to the electrode head extension rod, the electrode head extension rod is connected to the outer plastic tube of the electrode head fixing piece, the plastic long tube fixing tube is connected to the outer plastic tube of the electrode head fixing piece, the insulator is installed on the plastic long tube fixing tube, the rear insulator is installed on the insulator, the cathode is installed on the rear insulator and connected to the plastic long tube fixing tube, the anode is installed on the plastic long tube fixing tube, the bakelite ring is installed on the electrode head, the inner hole gun nozzle is installed on the bakelite ring, the nozzle sleeve is installed between the nozzle cap and the electrode head, the nozzle sleeve mounting tube is installed on the nozzle sleeve, and the nozzle plastic sleeve is installed on the nozzle sleeve mounting tube.

[0007] The present invention is further configured as follows: the dual-path replacement mechanism comprises an outer gun barrel, an outer gun barrel bottom mounting sleeve, a powder feeding head 1, a powder feeding head 2, a powder feeding tube 1 and a powder feeding tube 2; the outer gun barrel is mounted on the outside of the outer plastic tube of the electrode head fixing part; the outer gun barrel bottom mounting sleeve is mounted on the outer gun barrel; the powder feeding head 1 and the powder feeding head 2 are mounted on the inner hole gun nozzle; the powder feeding tube 1 is mounted on the outer gun barrel; and the powder feeding tube 2 is mounted on the nozzle cap.

[0008] The present invention is further configured as follows: an anode connector is connected to the anode.

[0009] By adopting the above technical solution, the position of the anode joint is limited.

[0010] The present invention is further configured as follows: a ceramic ring is installed between the outer barrel and the bakelite ring.

[0011] The present invention is further configured as follows: an anode upper end cover is installed on the mounting sleeve at the bottom of the outer barrel.

[0012] The present invention is further configured as follows: the nozzle plastic sleeve is connected to the electrode head extension rod.

[0013] The present invention is further configured as follows: the nozzle plastic sleeve is connected to the bakelite ring.

[0014] The present invention is further configured as follows: the cathode is mounted on an insulator.

[0015] The beneficial effect of the present invention is that the installation position of the cathode is limited.

[0016] The spray gun of the present invention has positive and negative electrodes, which continuously provide direct current and molecular gas to the spray gun. Through targeted design, the horizontal direction of transportation is changed to vertical direction transportation, which is suitable for spraying of deep small inner holes of 80 mm. The present invention can adapt to the spraying of inner holes of different depths by replacing the outer gun barrel, powder feeding tube one and powder feeding tube two of different lengths. The uniquely designed spray gun structure can adapt to various complex inner hole shapes and sizes, improve the versatility of processing, and adopt a dual-path powder feeding structure, which significantly improves the spraying effect and the utilization efficiency of the spraying powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following will briefly introduce the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and the structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented, so they have no technical substantive significance, and any structural modification, change in proportional relationship or adjustment of size.

[0018] Figure 1 The present invention is a schematic structural diagram of a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep areas.

[0019] Figure 2 The present invention provides a schematic cross-sectional structural diagram of a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep areas.

[0020] Figure 3 yes Figure 2 Schematic diagram of the structure of part A in .

[0021] Figure 4 yes Figure 2 Schematic diagram of the structure of part B.

[0022] In the figure, 1. electrode head; 2. rear insulator; 3. electrode head extension rod; 4. outer plastic tube of electrode head fixing part; 5. plastic long tube fixing tube; 6. insulator; 7. cathode; 8. anode; 9. anode joint; 10. bakelite ring; 11. inner hole gun nozzle; 12. nozzle cap; 13. nozzle sleeve; 14. nozzle sleeve mounting tube; 15. nozzle plastic sleeve; 16. outer barrel; 17. outer barrel bottom mounting sleeve; 18. end cover above anode; 19. ceramic ring; 20. powder feeding head one; 21. powder feeding head two; 22. powder feeding tube one; 23. powder feeding tube two. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention provides a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep, comprising: Electrode head 1, rear insulator 2, electrode head extension rod 3, outer plastic tube of electrode head fixing part 4, plastic long tube fixing tube 5, insulator 6, cathode 7, anode 8, bakelite ring 10, inner hole gun nozzle 11, nozzle cap 12, nozzle sleeve 13, nozzle sleeve mounting tube 14, nozzle plastic sleeve 15 and double-way replacement mechanism; The electrode head 1 is connected to the electrode head extension rod 3, the electrode head extension rod 3 is connected to the outer plastic tube 4 of the electrode head fixing piece, the plastic long tube fixing tube 5 is connected to the outer plastic tube 4 of the electrode head fixing piece, the insulator 6 is installed on the plastic long tube fixing tube 5, the rear insulator 2 is installed on the insulator 6, the cathode 7 is installed on the rear insulator 2 and connected to the plastic long tube fixing tube 5, the anode 8 is installed on the plastic long tube fixing tube 5, the bakelite ring 10 is installed on the electrode head 1, the inner hole gun nozzle 11 is installed on the bakelite ring 10, the nozzle sleeve 13 is installed between the nozzle cap 12 and the electrode head 1, the nozzle sleeve mounting tube 14 is installed on the nozzle sleeve 13, and the nozzle plastic sleeve 15 is installed on the nozzle sleeve mounting tube 14.

[0029] Through the above structure, there are cathode 7 and anode 8 in the spray gun, which continuously provide direct current and molecular gas to the spray gun. Through targeted design, the horizontal direction of transportation is changed to vertical direction of transportation, which is suitable for 80 mm deep small inner hole spraying.

[0030] Specifically, the dual-path replacement mechanism includes an outer barrel 16, an outer barrel bottom mounting sleeve 17, a powder feeding head 20, a powder feeding head 21, a powder feeding tube 1 22 and a powder feeding tube 2 23. The outer barrel 16 is installed on the outside of the outer plastic tube of the electrode head fixing part, the outer barrel bottom mounting sleeve 17 is installed on the outer barrel 16, the powder feeding head 20 and the powder feeding head 21 are installed on the inner hole gun nozzle 11, the powder feeding tube 1 22 is installed on the outer barrel 16, and the powder feeding tube 2 23 is installed on the nozzle cap 12.

[0031] Through the above-mentioned dual-path replacement mechanism, the outer gun barrel 16, powder feeding tube 1 22 and powder feeding tube 2 23 of different lengths can be replaced to adapt to the internal hole spraying of different depths. The uniquely designed spray gun structure can adapt to various complex internal hole shapes and sizes, improve the versatility of processing, and adopt a dual-path powder feeding structure, which significantly improves the spraying effect and the utilization efficiency of the spraying powder.

[0032] Specifically, the anode 8 is connected to an anode connector 9, a ceramic ring 19 is installed between the outer barrel 16 and the bakelite ring 10, an anode upper end cover 18 is installed on the outer barrel bottom mounting sleeve 17, the nozzle plastic sleeve 15 is connected to the electrode head extension rod 3, the nozzle plastic sleeve 15 is connected to the bakelite ring 10, and the cathode 7 is installed on the insulator 6.

[0033] This inner hole spray gun can adapt to inner hole spraying of different depths by replacing the outer gun barrel 16 and powder feeding tube of different lengths. The uniquely designed spray gun structure can adapt to various complex inner hole shapes and sizes, improve the versatility of processing, and adopt a dual-path powder feeding structure, which significantly improves the spraying effect and the utilization efficiency of spray powder. Mixed materials with micro-nano particle sizes can be used to spray workpieces.

[0034] The above is a detailed introduction to a plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep particles provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep, characterized in that: include: An electrode head (1), a rear insulator (2), an electrode head extension rod (3), an outer plastic tube of an electrode head fixing member (4), a plastic long tube fixing tube (5), an insulator (6), a cathode (7), an anode (8), a bakelite ring (10), an inner hole gun nozzle (11), a nozzle cap (12), a nozzle sleeve (13), a nozzle sleeve mounting tube (14), a nozzle plastic sleeve (15), and a two-way replacement mechanism; The electrode head (1) is connected to the electrode head extension rod (3), the electrode head extension rod (3) is connected to the outer plastic tube (4) of the electrode head fixing piece, the plastic long tube fixing tube (5) is connected to the outer plastic tube (4) of the electrode head fixing piece, the insulator (6) is mounted on the plastic long tube fixing tube (5), the rear insulator (2) is mounted on the insulator (6), the cathode (7) is mounted on the rear insulator (2) and connected to the plastic long tube fixing tube (5), the anode (8) is mounted on the plastic long tube fixing tube (5), the bakelite ring (10) is mounted on the electrode head (1), the inner hole gun nozzle (11) is mounted on the bakelite ring (10), the nozzle sleeve (13) is mounted between the nozzle cap (12) and the electrode head (1), the nozzle sleeve mounting tube (14) is mounted on the nozzle sleeve (13), and the nozzle plastic sleeve (15) is mounted on the nozzle sleeve mounting tube (14).

2. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep holes according to claim 1, characterized in that: The dual-path replacement mechanism comprises an outer gun barrel (16), an outer gun barrel bottom mounting sleeve (17), a powder delivery head 1 (20), a powder delivery head 2 (21), a powder delivery pipe 1 (22) and a powder delivery pipe 2 (23); the outer gun barrel (16) is mounted on the outer side of an outer plastic pipe of an electrode head fixing member; the outer gun barrel bottom mounting sleeve (17) is mounted on the outer gun barrel (16); the powder delivery head 1 (20) and the powder delivery head 2 (21) are mounted on an inner hole gun nozzle (11); the powder delivery pipe 1 (22) is mounted on the outer gun barrel (16); and the powder delivery pipe 2 (23) is mounted on a nozzle cap (12).

3. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep according to claim 1, characterized in that: The anode (8) is connected to an anode connector (9).

4. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep according to claim 2, characterized in that: A ceramic ring (19) is installed between the outer gun barrel (16) and the bakelite ring (10).

5. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep according to claim 2, characterized in that: An anode upper end cover (18) is mounted on the outer barrel bottom mounting sleeve (17).

6. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep holes according to claim 1, characterized in that: The nozzle plastic sleeve (15) is connected to the electrode head extension rod (3).

7. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep according to claim 1, characterized in that: The nozzle plastic sleeve (15) is connected to the bakelite ring (10).

8. The plasma inner hole spray gun suitable for spraying ultra-small and ultra-deep holes according to claim 1, characterized in that: The cathode (7) is mounted on the insulator (6).

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