Gun base capable of carrying nozzles of various specifications and electric spray gun thereof

Abstract

The utility model discloses a gun base capable of carrying nozzles of various specifications and an electric spray gun thereof. The gun base comprises a gun body, a container base, a nozzle, a nozzle sealing assembly, a plurality of standby nozzles and standby nozzle positioning assemblies with the same number as the standby nozzles. A liquid inlet pipe is arranged in the gun body, and the container base comprises a container cover and a standby nozzle positioning part. The nozzle sealing assembly comprises a first sealing ring and a first sealing ring seat; the liquid inlet pipe is sleeved with the first sealing ring seat, the first sealing ring seat is sleeved with the first sealing ring, and the first sealing ring and the front end of the liquid inlet pipe are sleeved with the nozzles respectively. Each standby nozzle positioning assembly comprises a nozzle supporting seat, a second sealing ring and a second sealing ring seat; the nozzle supporting seat is connected with the standby nozzle positioning part; the nozzle supporting seat is sleeved with the second sealing ring seat, the second sealing ring seat is sleeved with the second sealing ring, and the second sealing ring is sleeved with the standby nozzle. According to the utility model, a user can conveniently carry nozzles with different specifications, and reliable sealing between the nozzle and the gun body after frequent replacement is ensured.

Description

Technical Field

[0001] This utility model relates to a spray gun for spraying coatings. Background Technology

[0002] The working principle of an electric spray gun is that a motor drives a pump to generate compressed gas. This compressed gas enters a spray liquid container connected to the gun body, pressurizing the spray liquid into a suction tube, which then delivers it to the nozzle, thus achieving the spraying function. During spraying operations, to meet different spray flow requirements, it is often necessary to change nozzles of different specifications (e.g., different diameters). In existing technology, nozzles can only be stored separately, which is inconvenient to carry during spraying operations and is easily lost, causing inconvenience to users.

[0003] In addition, in existing electric spray guns, the nozzle and the liquid inlet pipe inside the gun body are sealed by hard contact. If the nozzle is replaced frequently, the contact surface can easily be worn, resulting in the inability to achieve a sealing effect after the nozzle is replaced. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a gun holder that can carry nozzles of various specifications, which makes it convenient for users to carry and replace nozzles of different specifications.

[0005] Another technical problem to be solved by this utility model is to provide a gun holder that can carry nozzles of various specifications, which can ensure a reliable sealing effect between the nozzle and the gun body after frequent replacements.

[0006] The further technical problem to be solved by this utility model is to provide an electric spray gun.

[0007] According to one aspect of the present invention, a gun holder capable of carrying nozzles of various specifications is provided, including a gun body, a container seat, nozzles, and a nozzle sealing assembly; the gun body is provided with a liquid inlet pipe, and the liquid inlet pipe is provided with a spray liquid channel; the container seat includes a container cap, wherein the container seat also includes a spare nozzle positioning part, the spare nozzle positioning part being connected to the container cap; the gun holder capable of carrying nozzles of various specifications also includes a plurality of spare nozzles and a plurality of spare nozzle positioning assemblies equal to the number of spare nozzles; each spare nozzle is connected to the spare nozzle positioning part through a corresponding spare nozzle positioning assembly.

[0008] The aforementioned gun holder capable of carrying nozzles of various specifications includes a nozzle sealing assembly comprising a first sealing ring and an annular first sealing ring seat; the first sealing ring seat is fitted outside the inlet pipe, the first sealing ring is fitted outside the first sealing ring seat, and the nozzles are respectively fitted outside the front ends of the first sealing ring and the inlet pipe, with the first sealing ring and the inner wall of the nozzle being press-fitted; a spare nozzle is used to replace the nozzle; each spare nozzle positioning assembly includes a nozzle support, a second sealing ring, and an annular second sealing ring seat; the rear end of the nozzle support is connected to the spare nozzle positioning part; the second sealing ring seat is fitted outside the front end of the nozzle support, the second sealing ring is fitted outside the second sealing ring seat, and the spare nozzle is fitted outside the second sealing ring, with the second sealing ring and the inner wall of the spare nozzle being press-fitted.

[0009] The aforementioned gun holder capable of carrying nozzles of various specifications, wherein both the first and second sealing rings are rubber sealing rings.

[0010] According to another aspect of the present invention, an electro-spray gun is also provided, which includes the aforementioned gun holder.

[0011] This utility model has at least the following advantages and features:

[0012] 1. This utility model embodiment directly installs nozzles of different specifications on the gun holder, so that the user does not need to carry them separately and they will not be lost. During the spraying operation, the user can easily change nozzles of different specifications according to actual needs.

[0013] 2. In this embodiment of the utility model, the nozzle and the spare nozzle are in soft contact with the rubber sealing ring. Since the rubber sealing ring is not easily worn, it can ensure that the nozzle and the spare nozzle, which are frequently replaced, always maintain a good seal with the first sealing ring, thereby ensuring a reliable sealing effect between the nozzle and the gun body. Attached Figure Description

[0014] Figure 1 An explosion diagram of a gun mount capable of carrying nozzles of various specifications according to an embodiment of the present invention is shown.

[0015] Figure 2 A schematic diagram of the appearance of a gun holder capable of carrying nozzles of various specifications according to an embodiment of the present invention is shown.

[0016] Figure 3 A cross-sectional schematic diagram of a gun mount capable of carrying nozzles of various specifications according to an embodiment of the present invention is shown.

[0017] Figure 4 It shows Figure 3 A magnified view of part P.

[0018] Figure 5A partial cross-sectional schematic diagram of a gun mount capable of carrying nozzles of various specifications according to an embodiment of the present invention is shown.

[0019] Figure 6 A schematic diagram of the connection of the air intake hose according to an embodiment of the present invention is shown.

[0020] Figure 7 A schematic diagram of the electro-spray gun of this utility model is shown. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Please refer to Figures 1 to 6 According to one embodiment of the present invention, the gun holder 100 includes a gun body 1, a container seat 2, a spray liquid container assembly, a nozzle 41, a nozzle sealing assembly, a plurality of spare nozzles 51, a plurality of spare nozzle positioning assemblies equal to the number of spare nozzles, and an air inlet hose 61.

[0023] The gun body 1 is provided with a liquid inlet pipe 11, and a spray liquid channel 1a is provided inside the liquid inlet pipe 11. The gun body 1 is also provided with a compressed air channel 1b that is sealed and isolated from the spray liquid channel 1a. An air outlet connector 12 is provided on the side of the gun body 1, and the air outlet connector 12 is connected to the compressed air channel 1b.

[0024] The container base 2 includes a container cap 21, a connecting pipe 22, and a spare nozzle positioning part 23. The container cap 21 has a liquid inlet 211 and an air inlet pipe 212. The liquid inlet 21 has external threads and is detachably connected to the liquid inlet cap 24 via a threaded connection. The upper and lower ends of the connecting pipe 22 are connected to the gun body 1 and the container cap 21, respectively, and the spare nozzle positioning part 23 is connected to the container cap 21. The top of the air inlet pipe 212 is covered with a pipe cap 213, and the side of the pipe cap 213 has an air inlet connector 214, which communicates with the air inlet pipe 212. The pipe cap 213 and the air inlet pipe 212 are pressed together using a conical seal.

[0025] The spraying liquid container assembly includes a spraying liquid container 31 and a suction tube 32. The container cap 21 is detachably connected to the spraying liquid container 31 via a threaded connection. The bottom surface of the inlet pipe 11 has a pipe hole 11c, which passes through the spraying liquid channel 1a. The lower end of the suction tube 32 extends into the spraying liquid container 31, and the upper end of the suction tube 32 passes through the connecting pipe 22 and connects to the pipe hole 11c, thereby connecting to the spraying liquid channel 1a of the gun body 1. The liquid inlet 211 and the air inlet pipe 212 are respectively connected to the spraying liquid container 31 for adding liquid and introducing air into the spraying liquid container 31.

[0026] The nozzle sealing assembly includes a first sealing ring 42 and an annular first sealing ring seat 43. The first sealing ring seat is sleeved on the outside of the liquid inlet pipe 11, and the first sealing ring is sleeved on the outside of the sealing ring seat 43. The nozzle 41 is respectively sleeved on the front end of the first sealing ring 42 and the liquid inlet pipe 11, and the first sealing ring 42 is press-fitted with the inner wall of the nozzle 41. In this embodiment, the inner wall of the first sealing ring seat 43 is press-fitted with the outer wall of the liquid inlet pipe 11, and the outer peripheral surface of the first sealing ring seat 43 is provided with a first annular groove 432 extending circumferentially, in which the first sealing ring 42 is partially embedded.

[0027] A spare nozzle 51 is used to replace nozzle 41. The term "several" in this application means "one or more". Each spare nozzle positioning assembly includes a nozzle support 50, a second sealing ring 52, and an annular second sealing ring seat 53. The rear end of the nozzle support 50 is connected to the spare nozzle positioning part 23. The second sealing ring seat 53 is sleeved on the front end of the nozzle support 50, the second sealing ring 52 is sleeved on the second sealing ring seat 53, and the spare nozzle 51 is sleeved on the second sealing ring 52, with the second sealing ring 52 and the inner wall of the spare nozzle 51 being press-fitted. In this embodiment, the nozzle support 50 and the spare nozzle positioning part 23 are detachably connected. The inner wall of the second sealing ring seat 53 is press-fitted with the outer wall of the front end of the nozzle support 50. The outer circumferential surface of the second sealing ring seat 53 is provided with a second annular groove 532 extending circumferentially, and the second sealing ring 52 is partially embedded in the second annular groove 532.

[0028] In some specific embodiments, the spare nozzle positioning part 23 includes two stiffening plates 231, which are located on both sides of the connecting pipe 22, and each stiffening plate 231 is connected to the connecting pipe 22 and the container cover 21 respectively. There are two spare nozzles 51 and two nozzle support seats 50, and the two nozzle support seats 50 are connected to the two stiffening plates 231 by screws 54 respectively.

[0029] In this embodiment, both the first sealing ring 42 and the second sealing ring 52 are rubber sealing rings. The outer surface of the front end of the liquid inlet pipe 11 is an outer conical surface 11a whose outer diameter gradually increases from front to back. The inner wall of the nozzle 41 is provided with an inner conical surface 41a that mates with the outer conical surface 11a. The inner wall of each spare nozzle 51 is provided with an inner conical surface 51a that mates with the outer conical surface 11a.

[0030] In this embodiment, the inner wall of the nozzle 41 is provided with a first annular stepped surface 411 facing the rear end of the nozzle 41, and the front end face of the first annular sealing ring seat 43 abuts against the first annular stepped surface 411. The inner wall of each spare nozzle 51 is provided with a second annular stepped surface 511 facing the rear end of the spare nozzle 51, and the front end face of the second annular sealing ring seat 53 abuts against the second annular stepped surface 511.

[0031] One end of the air inlet hose 61 is fitted over the air outlet connector 12 of the gun body 1 and fixed by the first clamp 621. The other end of the air inlet hose 61 is fitted over the air inlet connector 214 and fixed by the second clamp 622, so that the compressed air in the compressed air channel 1b can enter the spray liquid container 31 through the air inlet hose 61.

[0032] The figure also shows other components of the gun holder 100, such as the nozzle 45, the tightening nut 46, the valve needle 71, and the trigger 72. The nozzle 45 is rotatably mounted on the nozzle 41. The tightening nut 46 is screwed to the front end of the gun body 1, holding the nozzle 45 in place. The front part of the valve needle 71 is positioned in the spray liquid channel 1a, and the tip of the valve needle 71 is in a sealing engagement with the outlet of the nozzle 41. The trigger 72 extends upward through the rear part of the valve needle 71, and the top of the trigger 71 is hinged to the gun body 1 to drive the valve needle 71 to move axially back and forth.

[0033] Figure 7 A schematic diagram of the appearance of an electro-spray gun employing a gun head according to an embodiment of the present invention is shown. Figure 7 As shown, the gun holder 100 is located at the front end of the electric spray gun body 200. During spraying, pressing the trigger 72 activates the motor switch (not shown in the figure), causing the motor to operate. Compressed air is generated by the motor driving the fan blades. After passing through the compressed air channel 1b, part of the compressed air is sprayed out from the nozzle 45, and the other part enters the air inlet hose 61. Through the air inlet connector 214, it enters the spray liquid container 31, making the air pressure inside the spray liquid container 31 greater than the external atmospheric pressure. The paint enters the spray liquid channel 1a of the gun body 1 from the suction tube 32 and is sprayed out from the nozzle 41, thus realizing the spraying function.

[0034] When the nozzle needs to be replaced, release trigger 72 to stop the motor. Remove nozzle 41 and replace it with the required spare nozzle 51. The removed nozzle 41 can be directly fitted over the second sealing ring 52. In this embodiment of the invention, the nozzle and spare nozzle have soft contact with the rubber sealing ring. Because the rubber sealing ring is not easily worn, it can ensure that the nozzle and spare nozzle maintain a good seal with the first sealing ring after multiple replacements, thereby ensuring a reliable sealing effect between the nozzle and the gun body.

[0035] This utility model embodiment directly installs spare nozzles of different specifications on the gun base, eliminating the need for special storage, making it convenient for users to carry and preventing loss.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A gun holder capable of carrying nozzles of various specifications, comprising a gun body, a container seat, nozzles, and a nozzle sealing assembly; the gun body is provided with a liquid inlet pipe, and the liquid inlet pipe is provided with a spray liquid channel; the container seat includes a container cap, characterized in that, The container seat also includes a spare nozzle positioning part, which is connected to the container lid; The gun mount capable of carrying nozzles of various specifications also includes several spare nozzles and several spare nozzle positioning assemblies of the same number as the spare nozzles; each spare nozzle is connected to the spare nozzle positioning part through a corresponding spare nozzle positioning assembly.

2. The gun holder capable of carrying nozzles of various specifications as described in claim 1, characterized in that: The nozzle sealing assembly includes a first sealing ring and an annular first sealing ring seat; the first sealing ring seat is sleeved outside the liquid inlet pipe, the first sealing ring is sleeved outside the first sealing ring seat, and the nozzle is respectively sleeved outside the front end of the first sealing ring and the liquid inlet pipe, and the first sealing ring is interference-fitted with the inner wall of the nozzle. The spare nozzle is used to replace the nozzle; each spare nozzle positioning assembly includes a nozzle support, a second sealing ring, and an annular second sealing ring seat; the rear end of the nozzle support is connected to the spare nozzle positioning part; the second sealing ring seat is sleeved outside the front end of the nozzle support, the second sealing ring is sleeved outside the second sealing ring seat, the spare nozzle is sleeved outside the second sealing ring, and the second sealing ring is interference-fitted with the inner wall of the spare nozzle.

3. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, The outer peripheral surface of the first sealing ring seat is provided with a first annular groove extending in the circumferential direction, and the first sealing ring is partially embedded in the first annular groove.

4. The gun mount capable of carrying nozzles of various specifications as described in claim 2 or 3, characterized in that, The outer circumferential surface of the second sealing ring seat is provided with a second annular groove extending in the circumferential direction, and the second sealing ring is partially embedded in the second annular groove.

5. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, Both the first sealing ring and the second sealing ring are rubber sealing rings.

6. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, The inner wall of the first sealing ring seat is press-fitted with the outer wall of the inlet pipe, and / or The inner wall of the second sealing ring seat is interference-fitted with the outer wall of the front end of the nozzle support seat.

7. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, The nozzle support is detachably connected to the spare nozzle positioning part.

8. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, The container base includes a connecting tube, the upper end of which is connected to the gun body and the container cover, respectively. The spare nozzle positioning part includes two stiffening plates, which are located on both sides of the connecting pipe, and each stiffening plate is connected to the connecting pipe and the container cap respectively. There are two spare nozzles and two nozzle support seats, and the two nozzle support seats are respectively connected to the two stiffening plates by screws.

9. The gun holder capable of carrying nozzles of various specifications as described in claim 1, characterized in that, The outer surface of the front end of the liquid inlet pipe is an outer conical surface whose outer diameter gradually increases from front to back. The inner wall of the nozzle and the inner wall of each of the spare nozzles are respectively provided with an inner conical surface that matches the outer conical surface.

10. The gun holder capable of carrying nozzles of various specifications as described in claim 2, characterized in that, The inner wall of the nozzle is provided with a first annular stepped surface facing the rear end of the nozzle, and the front end face of the first annular sealing ring seat abuts against the first annular stepped surface. Each of the standby nozzles has a second annular stepped surface on its inner wall facing the rear end of the standby nozzle, and the front end face of the second annular sealing ring seat abuts against the second annular stepped surface.

11. The gun holder capable of carrying nozzles of various specifications as described in claim 1, characterized in that, The gun body is provided with a compressed air channel that is sealed and isolated from the spray liquid channel. The side of the gun body is provided with an air outlet connector, which is connected to the compressed air channel. The container cap is provided with an air inlet pipe, the top of the air inlet pipe is covered with a pipe cap, and the side of the pipe cap is provided with an air inlet connector, which is connected to the air inlet pipe. The gun holder capable of carrying nozzles of various specifications includes an air inlet hose. One end of the air inlet hose is fitted over the air outlet connector of the gun body and is clamped and fixed by a first clamp. The other end of the air inlet hose is fitted over the air inlet connector and is clamped and fixed by a second clamp.

12. An electro-spray gun, characterized in that, The electro-spray gun includes a gun mount as described in any one of claims 1 to 11.

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