High-pressure airless spraying machine

Abstract

A spray gun comprises a holding part, a knob part, a valve body, a sliding part and an end part, a connecting pipe is arranged at one end of the holding part, the other end of the holding part is connected with the end part, a fluid channel communicated with the connecting pipe is arranged in the holding part, a mounting hole is formed in the side face of the holding part, the knob part is arranged in the mounting hole, and the valve body is arranged in the valve body. The flow guide hole of the knob part is located in the fluid channel and provided with a front hole and a rear hole, the front hole is communicated with the rear hole, the front hole corresponds to the first through hole of the fluid channel, the rear hole corresponds to the second through hole of the fluid channel, one end of the valve body is arranged in the holding part, the other end of the valve body is arranged in the end head part, and the valve body is arranged in the fluid channel in a sliding mode. A liquid outlet channel is formed between the front end portion of the valve body and the liquid outlet of the end portion, and the sliding portion is arranged on the end portion in a sliding mode and connected with the valve body. A user can adjust the spraying amount and the spraying range by holding the spraying gun, operation can be conducted on the holding part, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying machines, in particular to a high-pressure airless spraying machine. Background Art

[0002] A high-pressure airless spraying machine uses a high-pressure plunger pump to pressurize and spray paint. The pressurized paint is transported through a high-pressure hose to a spray gun and released through a nozzle to form atomization, thereby forming a dense coating on the wall surface. For example, the patent with the publication number CN205570607U discloses a high-pressure airless spraying machine, which also includes a spherical connector. The spherical connector is connected to a bracket, and the spray gun is rotatably connected to the spherical connector. In this way, the spray gun can be either handheld or fixed on the bracket. In the above technical solution, the spray gun can be operated by hand. However, when held by hand, it is difficult for the user to adjust the flow rate and spraying range of the spray gun. Summary of the Utility Model

[0003] In order to solve the problems of the prior art, the utility model provides a high-pressure airless spraying machine that can be easily adjusted when the user holds the spray gun, making it more convenient to use.

[0004] The specific technical solution is as follows: A high-pressure airless spraying machine includes a main body and a spray gun connected to the main body. The spray gun includes a holding part, a knob part, a valve body, a sliding part, and a head part. One end of the holding part is provided with a connecting pipe, and the other end is connected to the head part. A fluid passage communicating with the connecting pipe is provided in the holding part. An installation hole is provided on the side of the holding part. The knob part is arranged in the installation hole. The diversion hole of the knob part is located in the fluid passage. The diversion hole has a front hole and a rear hole, and the front hole and the rear hole are communicated. The front hole is correspondingly arranged with the first through hole of the fluid passage, and the rear hole is correspondingly arranged with the second through hole of the fluid passage. The overlapping area of the front hole and the first through hole is adjusted by rotating the knob part. One end of the valve body is arranged in the holding part, and the other end is arranged in the head part. The valve body is slidably arranged in the fluid passage. An outlet passage is formed between the front end of the valve body and the liquid outlet of the head part. The sliding part is slidably arranged on the head part and is connected to the valve body, and the sliding part drives the valve body to move.

[0005] In some embodiments, the knob part has a cylindrical part, and the cylindrical part is inserted into the installation hole. A rotating wheel is provided at one end of the cylindrical part.

[0006] In some embodiments, a convex part is provided at the end of the cylindrical part, and a plurality of convex parts are arranged at intervals.

[0007] In some embodiments, sealing rings are provided on both sides of the diversion hole, and the sealing rings surround the cylindrical part.

[0008] In some embodiments, the sliding part is provided with a connecting part, and the connecting part is inserted into the slot on the top of the valve body.

[0009] In some embodiments, an elastic band is provided at the top of the slot, and bumps are provided on the elastic band. The bumps are correspondingly arranged with the card slots on the holding part, and a plurality of card slots are arranged at intervals.

[0010] In some embodiments, the card slots are arranged on both sides of the assembly hole of the holding part, and the connecting part passes through the assembly hole and is connected to the valve body.

[0011] In some embodiments, the end head is threadedly connected to the holding part.

[0012] The technical effect of the present utility model: A user of a high-pressure airless spraying machine of the present utility model sprays by holding the spray gun, and can adjust the spraying amount and spraying range at the same time, and can operate on the holding part, which is more convenient to use. Description of the Drawings

[0013] Figure 1 is a schematic diagram of a high-pressure airless spraying machine according to an embodiment of the present utility model.

[0014] Figure 2 is a schematic diagram of the spray gun according to an embodiment of the present utility model.

[0015] Figure 3 is a schematic diagram of the liquid outlet channel according to an embodiment of the present utility model.

[0016] Figure 4 is a schematic diagram of the holding part according to an embodiment of the present utility model.

[0017] Figure 5 is a schematic diagram of the valve body according to an embodiment of the present utility model.

[0018] Figure 6 is a schematic diagram of the sliding part according to an embodiment of the present utility model. Detailed Embodiments

[0019] Next, the substantial features and advantages of the present utility model will be further described in conjunction with examples, but the present utility model is not limited to the listed examples.

[0020] Such as Figures 1 to 6As shown, a high-pressure airless sprayer of this embodiment includes a main body 1 and a spray gun 2 connected to the main body 1, and the spray gun 2 sprays the material. The spray gun 2 includes a gripping portion 3, a knob portion 4, a valve body 5, a sliding portion 6 and a terminal portion 7. One end of the gripping portion 3 is provided with a connecting pipe 8, and the other end is connected to the terminal portion 7. A fluid channel 31 connected to the connecting pipe 8 is provided in the gripping portion 3, and the connecting pipe 8 transports the material into the fluid channel 31. A mounting hole 32 is provided on the side of the gripping portion 3, and the knob portion 4 is arranged in the mounting hole 32. The guide hole 41 of the knob portion 4 is located in the fluid channel 31, and the material in the fluid channel 31 can continue to flow through the guide hole 41. The flow guide hole 41 has a front hole 411 and a rear hole 412, the front hole 411 and the rear hole 412 are connected, the front hole 411 is arranged corresponding to the first through hole 311 of the fluid channel 31, and the rear hole 412 is arranged corresponding to the second through hole 312 of the fluid channel. The knob portion 4 is rotated to adjust the overlap area of the front hole 411 and the first through hole 311, so that the material flow rate can be adjusted. One end of the valve body 5 is arranged in the grip portion 3, and the other end is arranged in the end portion 7. The valve body 5 is slidably arranged in the fluid channel 31, so that the valve body 5 can slide relative to the grip portion 3. A liquid outlet channel 10 is formed between the front end portion 51 of the valve body 5 and the liquid outlet 71 of the end portion 7. The liquid outlet channel is a variable cross-section channel, that is, it first contracts and then expands along the liquid outlet direction, and the liquid is sprayed out through the liquid outlet channel 10. The sliding portion 6 is slidably arranged on the end portion 7 and connected to the valve body 5, and the sliding portion 6 drives the valve body 5 to move. The sliding of the sliding portion 6 causes the valve body 5 to move axially, thereby changing the relative position of the front end portion 51 and the liquid outlet 71, thereby changing the range of the sprayed material. Specifically, the front end portion 51 is provided with a first annular portion 511 and a second annular portion 512 connected in sequence, the first and second annular portions are connected by a conical portion 513, and a stepped portion 72 is provided in the liquid outlet 71, and a variable cross-section channel is formed between the stepped portion and the above-mentioned annular portion and the conical portion. In the above technical scheme, the material enters the fluid channel 31 through the connecting pipe 8, and the spraying amount can be adjusted by rotating the knob portion 4. The material enters the hollow channel 52 of the valve body 5 after passing through the guide hole 41, and then is output through the liquid outlet channel 10. Through the above technical scheme, the user can spray by holding the spray gun, and can adjust the spraying amount and spraying range at the same time, which can be operated on the grip, making it more convenient to use.

[0021] In this embodiment, the knob portion 4 has a cylindrical portion 42, which is inserted into the mounting hole 32. A rotating wheel 43 is provided at one end of the cylindrical portion 42. The user turns the rotating wheel 43 to rotate the cylindrical portion 42, thereby adjusting the relative position of the guide hole 41 and the fluid channel 31 to adjust the flow area. A protrusion 44 is provided at the end of the cylindrical portion 42, and a plurality of protrusions 44 are arranged at intervals, so that the protrusions 44 are inserted into the end surface of the mounting hole 32 to limit the position. Sealing rings 45 are provided on both sides of the guide hole 41, and the sealing rings 45 are arranged around the cylindrical portion 42 to prevent leakage of the guide hole 41.

[0022] In this embodiment, the sliding part 6 is provided with a connecting part 61. The connecting part 61 is inserted into the slot 52 at the top of the valve body 5, so that the sliding part 6 is connected to the valve body 5, and the sliding part 6 can drive the valve body 5 to slide. An elastic band 53 is provided at the top of the slot 52, and bump 54 is provided on the elastic band 53. The bump 54 is correspondingly arranged with the card slot 33 on the holding part 3, and a plurality of card slots 33 are arranged at intervals. Through the above technical solution, the bump 54 can be snapped into the card slot 33 to limit the position of the valve body 5. When the valve body 5 moves, the user pushes the sliding part 6 to disengage the bump 54 from the card slot 33 and move it into the adjacent card slot for positioning, so as to realize the adjustment and positioning. The card slot 33 is arranged on both sides of the assembly hole 34 of the holding part 3, and the connecting part 61 passes through the assembly hole 34 to be connected to the valve body 5, so that the connection between the valve body 5 and the holding part 3 is more stable. The end head 7 is threadedly connected to the holding part 3, which is convenient for the assembly or disassembly of the end head 7 and the holding part 3.

[0023] In this embodiment, a user of a high-pressure airless spraying machine holds the spray gun for spraying, and can adjust the spraying amount and spraying range at the same time, and can operate on the holding part, which is more convenient to use.

[0024] It should be noted that the above-mentioned preferred embodiment is only to illustrate the technical concept and characteristics of the present invention, and its purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A high-pressure airless spraying machine, comprising a main body and a spray gun connected to the main body, characterized in that, The spray gun includes a holding part, a knob part, a valve body, a sliding part and a tip part. One end of the holding part is provided with a connecting pipe, and the other end is connected to the tip part. A fluid passage communicating with the connecting pipe is provided inside the holding part. An installation hole is provided on the side of the holding part. The knob part is arranged in the installation hole, and the diversion hole of the knob part is located in the fluid passage. The diversion hole has a front hole and a rear hole, and the front hole and the rear hole communicate with each other. The front hole is correspondingly arranged with the first through hole of the fluid passage, and the rear hole is correspondingly arranged with the second through hole of the fluid passage. Rotating the knob part adjusts the overlapping area between the front hole and the first through hole. One end of the valve body is arranged inside the holding part, and the other end is arranged inside the tip part. The valve body is slidably arranged in the fluid passage. An liquid outlet passage is formed between the front end part of the valve body and the liquid outlet of the tip part. The sliding part is slidably arranged on the tip part and is connected to the valve body, and the sliding part drives the valve body to move.

2. The high-pressure airless spraying machine according to claim 1, characterized in that The knob part has a cylindrical part, and the cylindrical part is inserted into the installation hole. A runner is provided at one end of the cylindrical part.

3. The high-pressure airless spraying machine according to claim 2, wherein A convex part is provided at the end of the cylindrical part, and a plurality of convex parts are arranged at intervals.

4. The high-pressure airless spraying machine according to claim 3, characterized in that, Sealing rings are provided on both sides of the diversion hole, and the sealing rings are arranged around the cylindrical part.

5. The high-pressure airless spraying machine according to claim 1, wherein, The sliding part is provided with a connecting part, and the connecting part is inserted into the slot on the top of the valve body.

6. The high-pressure airless spraying machine according to claim 5, wherein, An elastic band is provided at the top of the slot, and convex points are provided on the elastic band. The convex points are correspondingly arranged with the card slots on the holding part, and a plurality of card slots are arranged at intervals.

7. The airless sprayer according to claim 6, wherein The card slots are arranged on both sides of the assembly hole of the holding part, and the connecting part passes through the assembly hole and is connected to the valve body.

8. The high-pressure airless spraying machine according to claim 7, characterized in that, The tip part is threadedly connected to the holding part.

Images