Liquid spraying structure of spray gun

Abstract

The utility model provides a liquid spraying structure of a spray gun. The liquid spraying device comprises a liquid inlet pipe, a liquid outlet pipe, an adjustable valve body and a liquid spraying head, the adjustable valve body is provided with an adjusting opening, a liquid inlet connector and a liquid outlet connector, the liquid inlet pipe is in butt joint with the liquid inlet connector, the liquid outlet pipe is in butt joint with the liquid outlet connector, a first liquid inlet hole and a second liquid inlet hole are formed in the liquid inlet connector, and a first liquid outlet hole and a second liquid outlet hole are formed in the liquid outlet connector. A valve element is rotationally connected into the adjustable valve body, and a first through hole and a second through hole are formed in the valve element. A first spraying hole and more than two second spraying holes are formed in the liquid spraying head, the second spraying holes are distributed in the peripheral position of the first spraying hole, a communicating pipe is arranged in the liquid outlet pipe, and the first liquid outlet hole is communicated with the first spraying hole through the communicating pipe; the adjustable valve body is further provided with an adjusting piece, the adjusting piece is used for driving the valve element to rotate, and the valve element rotates, so that adjustment of two spraying states is achieved, and the requirements of more spraying scenes are met.

Description

Technical Field

[0001] The utility model relates to a spray gun, in particular to a liquid spraying structure of the spray gun. Background Art

[0002] The existing spray gun structure, such as the new specification announcement with certificate number TWM483129U, discloses an adjustable gas-liquid spray gun, whose main structure includes a handle, a liquid inlet pipe and an airflow regulating valve are respectively installed at both ends of the handle, an inner tube and an outer tube are installed at the end of the liquid inlet pipe away from the handle, the outer tube is sleeved on the outside of the inner tube, a liquid delivery pipe is also installed on the liquid inlet pipe, and a liquid outlet head is installed at the end of the outer tube away from the liquid inlet pipe; in actual use, the gas source enters the inner tube through the airflow regulating valve, and the water source enters between the inner tube and the outer tube through the liquid delivery pipe, and finally the gas and liquid gather at the liquid outlet head position, so as to achieve the purpose of high-pressure liquid spraying.

[0003] Although the spray gun structure of the above structure can realize the basic high-pressure liquid spraying function, such a spray gun structure can only spray a single-shaped water column and cannot adapt to more liquid spraying scenarios. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a spray gun liquid spraying structure, which can change the spraying form to meet more spraying scenarios.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A spray gun liquid spraying structure, comprising a liquid inlet pipe, a liquid outlet pipe, an adjustable valve body, and a liquid spray head, wherein the adjustable valve body is provided with an adjustment port, a liquid inlet interface, and a liquid outlet interface, wherein the liquid inlet pipe is connected to the liquid inlet interface, wherein the liquid outlet pipe is connected to the liquid outlet interface, wherein the liquid inlet interface is provided with a first liquid inlet hole and a second liquid inlet hole, wherein the liquid outlet interface is provided with a first liquid outlet hole and a second liquid outlet hole, wherein a valve core is rotatably connected to the adjustable valve body, wherein the valve core is provided with a first through hole and a second through hole;

[0007] The liquid spray head is provided with a first spray hole and two or more second spray holes, the second spray holes are distributed around the first spray hole, a connecting pipe is provided in the liquid outlet pipe, and the first liquid outlet hole is connected with the first spray hole through the connecting pipe;

[0008] The adjustable valve body is also equipped with an adjusting member, which is used to drive the valve core to rotate. When the valve core rotates, it can present a first state in which the first liquid inlet hole, the first through hole, and the first liquid outlet hole are connected, or it can present a second state in which the second liquid inlet hole, the second through hole, and the second liquid outlet hole are connected.

[0009] Through the above technical scheme, the valve core can be driven to rotate by the adjusting member, and at this time, the following working states can be presented: working state one is that the first liquid inlet hole, the first through hole, and the first liquid outlet hole are connected, and the liquid flows out from the liquid inlet pipe, the first liquid inlet hole, the first through hole, the first liquid outlet hole, and the connecting pipe in sequence, and finally is sprayed out from the first injection hole; working state two is that the second liquid inlet hole, the second through hole, and the second liquid outlet hole are connected, and the liquid flows out from the liquid inlet pipe, the second liquid inlet hole, the second through hole, the second liquid outlet hole, the liquid outlet pipe in sequence, and finally is sprayed out from the second injection hole; thereby realizing the adjustment of the two injection states to meet the needs of more injection scenarios.

[0010] Preferably, a through groove is provided on the outer side wall of the valve core, and the through groove can connect the two openings of the second through hole from the outer side wall of the valve core.

[0011] Through the above technical scheme, when the second liquid inlet hole, the second through hole and the second liquid outlet hole are connected, the liquid flows out from the liquid inlet pipe, the second liquid inlet hole, the second through hole, the second liquid outlet hole and the liquid outlet pipe in sequence. Since there is a spray head with a second spray hole at the end, part of the water flow on the side close to the spray head will inevitably flow back to the side of the second through hole. This part of the water flow will also flow along the through groove, and then the water flow can flow again along the orifice of the second through hole close to the second liquid inlet hole to the orifice close to the second liquid outlet hole, and re-enter the liquid outlet pipe. At this time, the water flow in the entire liquid outlet pipe will produce a certain turbulent effect. After this part of the water flow is sprayed out from the second spray hole, there will also be a certain amount of sprayed liquid in the middle position surrounded by the second spray hole. Compared with the hollow spray range formed, the spray is more uniform.

[0012] Preferably, the number of the through grooves is two, and the two through grooves are arranged along the direction of the rotation axis core line of the valve core.

[0013] Through the above technical solution, on the one hand, the number of through grooves is set to two, and the water flow backflow speed is faster; on the other hand, the internal space of the valve core can be effectively utilized, and the overall structure is highly compact.

[0014] Preferably, the adjusting member comprises an adjustable handle, and the adjustable handle is connected to an end of the valve core.

[0015] Through the above technical solution, the user can drive the adjustable handle, and the adjustable handle directly drives the valve core to rotate, making the driving more labor-saving and efficient.

[0016] Preferably, two connecting pieces extend from the end of the adjustable handle, and the two connecting pieces are connected to the two ends of the valve core by bolts;

[0017] O-rings are installed at both ends of the valve core respectively. The O-rings are installed between the valve core and the adjustable valve body. Both the first through hole and the second through hole are located between the two O-rings.

[0018] Through the above technical solution, firstly, the two connecting pieces simultaneously connect the two ends of the valve core, and the connection stability is high; secondly, the O-ring can ensure the sealing between the valve core and the adjustable valve body while ensuring the smooth rotation of the valve core.

[0019] Preferably, a main liquid spray port is provided on the end of the liquid spray head away from the connecting pipe, the second spray hole is arranged obliquely, and the first spray hole and the second spray hole are both connected to the main liquid spray port.

[0020] Through the above technical solution, the water enters the liquid outlet pipe from the second through hole and is finally sprayed from the inclined second spray hole. At this time, the water sprayed from the second spray hole can not only produce an annular water spray circle, but also there will be water inside the water spray circle, thereby achieving a solid water spray effect.

[0021] Preferably, the connecting pipe is bent to form a first pipe section and a second pipe section, the first pipe section is connected to the first liquid outlet hole, the second pipe section is connected to the first injection hole, and the second pipe section is located in the middle of the liquid outlet pipe.

[0022] Through the above technical solution, on the one hand, the water coming out of the first liquid outlet can be guided to the first injection hole of the liquid spray head to achieve direct water spraying; on the other hand, the space between the second pipe section and the liquid outlet pipe is made relatively uniform, and the liquid discharge effect is better.

[0023] Preferably, the cross-section of the valve core is circular, the two ends of the valve core are respectively a small end and a large end, the diameter of the large end is larger than the diameter of the small end, the two connecting plates are respectively connected to the large end and the small end by bolts, and the connecting plates can be against the outer wall of the adjustable valve body.

[0024] Through the above technical solution, the two connecting plates can squeeze and position the valve core inside the adjustable valve core by tightening the bolts on the connecting plates; in addition, the fitting degree between the valve core with gradually changing diameter and the adjustable valve core is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural explosion diagram of an embodiment;

[0026] Figure 2 It is a schematic diagram of the first angle structure of the adjustable valve body;

[0027] Figure 3 It is a schematic cross-sectional structure diagram of an embodiment;

[0028] Figure 4 for Figure 3 A magnified view of part A;

[0029] Figure 5 It is a schematic diagram of the structure of the liquid spray head from a first angle;

[0030] Figure 6 It is a schematic diagram of the first angle structure of the valve core;

[0031] Figure 7 It is a schematic diagram of the second angle structure of the adjustable valve body;

[0032] Figure 8 It is a schematic diagram of the structure of the liquid spray head from a second angle;

[0033] Fig. 9 It is a schematic diagram of the second angle structure of the valve core.

[0034] Figure numerals: 1, liquid inlet pipe; 2, liquid outlet pipe; 3, adjustable valve body; 4, adjusting port; 5, liquid inlet interface; 6, first liquid inlet hole; 7, second liquid inlet hole; 8, liquid outlet interface; 9, liquid spray head; 10, first spray hole; 11, second spray hole; 12, valve core; 121, small end; 122, large end; 13, first through hole; 14, second through hole; 15, through groove; 16, connecting pipe; 161, first pipe section; 162, second pipe section; 17, adjusting member; 18, adjustable handle; 19, O-ring; 20, main liquid spray port; 21, first liquid outlet hole; 22, second liquid outlet hole; 23, connecting piece. DETAILED DESCRIPTION

[0035] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0036] A spray gun spray structure, see Figure 1 as well as Figure 2 , including a liquid inlet pipe 1, a liquid outlet pipe 2, an adjustable valve body 3, and a liquid spray head 9. The adjustable valve body 3 is provided with an adjusting port 4, a liquid inlet interface 5, and a liquid outlet interface 8. In this embodiment, there are two adjusting ports 4, which are symmetrically arranged at both sides of the adjustable valve body 3.

[0037] See also Figure 2 , Figure 7 , Figure 3 as well as Figure 4 The liquid inlet interface 5 is provided with a first liquid inlet hole 6 and a second liquid inlet hole 7, the liquid outlet interface 8 is provided with a first liquid outlet hole 21 and a second liquid outlet hole 22, the liquid inlet pipe 1 is connected to the liquid inlet interface 5, and the liquid outlet pipe 2 is connected to the liquid outlet interface 8.

[0038] See also Figure 1 , Figure 3as well as Figure 4 A valve core 12 is rotatably connected in the adjustable valve body 3, and a first through hole 13 and a second through hole 14 are provided on the valve core 12. O-rings 19 are installed at both ends of the valve core 12, and the O-rings 19 are installed between the valve core 12 and the adjustable valve body 3. Both the first through hole 13 and the second through hole 14 are located between the two O-rings 19. A through groove 15 is provided on the outer wall of the valve core 12, and the through groove 15 can connect the two orifices of the second through hole 14 from the outer wall of the valve core 12. The number of through grooves 15 shown in this embodiment is two, and the two through grooves 15 are arranged along the rotation axis of the valve core 12.

[0039] See also Figure 3 , Figure 4 as well as Figure 5 , Figure 8 The liquid jet head 9 is provided with a first jet hole 10 and two or more second jet holes 11, and the second jet holes 11 are distributed around the first jet hole 10. A connecting pipe 16 is provided in the liquid outlet pipe 2, and the first liquid outlet hole 21 is connected to the first jet hole 10 through the connecting pipe 16. The connecting pipe 16 is bent to form a first pipe section 161 and a second pipe section 162, the first pipe section 161 is connected to the first liquid outlet hole 21, the second pipe section 162 is connected to the first jet hole 10, and the second pipe section 162 is located in the middle of the liquid outlet pipe 2.

[0040] See also Figure 1 , Figure 3 as well as Figure 4 The adjustable valve body 3 is also provided with an adjusting member 17, which is mainly used to drive the valve core 12 to rotate. Specifically, the adjusting member 17 includes an adjustable handle 18, which is connected to the end of the valve core 12. Two connecting pieces 23 extend from the end of the adjustable handle 18, and the two connecting pieces 23 are connected to the two ends of the valve core 12 by bolts.

[0041] Among them, see Figure 5 , Figure 8 A main liquid spray port 20 is provided at one end of the liquid spray head 9 away from the connecting pipe 16 , and the second spray hole 11 is arranged at an angle. Both the first spray hole 10 and the second spray hole 11 are connected to the main liquid spray port 20 .

[0042] In addition, see Figure 4 as well as Figure 6 , Fig. 9The shape of the entire valve core 12 is basically a truncated cone. That is, the cross section of the valve core 12 is circular, and the two ends of the valve core 12 are respectively a small end 121 and a large end 122, and the diameter of the large end 122 is larger than the diameter of the small end 121. The two connecting pieces 23 are respectively connected to the large end 122 and the small end 121 by bolts, and the connecting pieces 23 can be against the outer wall of the adjustable valve body 3.

[0043] During actual use, at least the following two working states may be presented.

[0044] In working state 1, the regulating member 17 drives the valve core 12 to rotate in one direction, and the first liquid inlet hole 6, the first through hole 13, and the first liquid outlet hole 21 are connected. The liquid is sequentially ejected from the liquid inlet pipe 1, the first liquid inlet hole 6, the first through hole 13, the first liquid outlet hole 21, the first pipe section 161, the second pipe section 162, the first injection hole 10, and finally the liquid is ejected from the main injection port 20 to achieve direct injection;

[0045] In working state two, the regulating member 17 drives the valve core 12 to rotate in the other direction, and the second liquid inlet hole 7, the second through hole 14, and the second liquid outlet hole 22 are connected. The liquid enters into the space between the liquid outlet pipe 2 and the connecting pipe 16 from the liquid inlet pipe 1, the second liquid inlet hole 7, the second through hole 14, and the second liquid outlet hole 22 in turn. A part of the liquid is ejected through the second injection hole 11, and another part of the liquid will pass through the through groove 15 and flow back into the second through hole 14 from the orifice of the second through hole 14 close to the liquid inlet pipe 1, and then enter into the space between the liquid outlet pipe 2 and the connecting pipe 16 again, and be ejected through the second injection hole 11. The liquid ejected from the second injection hole 11 will also be ejected through the main liquid ejection port 20.

[0046] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A spray gun liquid spraying structure, comprising a liquid inlet pipe (1), a liquid outlet pipe (2), an adjustable valve body (3), and a liquid spraying head (9), wherein: The adjustable valve body (3) is provided with an adjusting port (4), a liquid inlet interface (5), and a liquid outlet interface (8); the liquid inlet pipe (1) is connected to the liquid inlet interface (5); the liquid outlet pipe (2) is connected to the liquid outlet interface (8); the liquid inlet interface (5) is provided with a first liquid inlet hole (6) and a second liquid inlet hole (7); the liquid outlet interface (8) is provided with a first liquid outlet hole (21) and a second liquid outlet hole (22); a valve core (12) is rotatably connected to the adjustable valve body (3); the valve core (12) is provided with a first through hole (13) and a second through hole (14); The liquid spray head (9) is provided with a first spray hole (10) and two or more second spray holes (11), the second spray holes (11) are distributed around the first spray hole (10), a connecting pipe (16) is provided in the liquid outlet pipe (2), and the first liquid outlet hole (21) is connected to the first spray hole (10) through the connecting pipe (16); The adjustable valve body (3) is also provided with an adjusting member (17), and the adjusting member (17) is used to drive the valve core (12) to rotate. When the valve core (12) rotates, it can present a first state in which the first liquid inlet hole (6), the first through hole (13), and the first liquid outlet hole (21) are connected, or present a second state in which the second liquid inlet hole (7), the second through hole (14), and the second liquid outlet hole (22) are connected.

2. A spray gun liquid spraying structure according to claim 1, characterized in that: A through groove (15) is provided on the outer wall of the valve core (12), and the through groove (15) can connect the two openings of the second through hole (14) on the outer wall of the valve core (12).

3. A spray gun liquid spraying structure according to claim 2, characterized in that: The number of the through grooves (15) is two, and the two through grooves (15) are arranged along the direction of the rotation axis of the valve core (12).

4. A spray gun liquid spraying structure according to any one of claims 1 to 3, characterized in that: The adjusting member (17) comprises an adjustable handle (18), and the adjustable handle (18) is connected to the end of the valve core (12).

5. A spray gun liquid spraying structure according to claim 4, characterized in that: Two connecting pieces (23) extend from the end of the adjustable handle (18), and the two connecting pieces (23) are connected to the two ends of the valve core (12) by bolts; O-rings (19) are respectively installed at both ends of the valve core (12), and the O-rings (19) are installed between the valve core (12) and the adjustable valve body (3), and both the first through hole (13) and the second through hole (14) are located between the two O-rings (19).

6. A spray gun liquid spraying structure according to any one of claims 1 to 3, characterized in that: A main liquid spray port (20) is provided on the end of the liquid spray head (9) away from the connecting pipe (16); the second spray hole (11) is arranged at an angle; and the first spray hole (10) and the second spray hole (11) are both connected to the main liquid spray port (20).

7. A spray gun liquid spraying structure according to any one of claims 1 to 3, characterized in that: The connecting pipe (16) is bent to form a first pipe section (161) and a second pipe section (162); the first pipe section (161) is connected to the first liquid outlet hole (21); the second pipe section (162) is connected to the first injection hole (10); and the second pipe section (162) is located in the middle of the liquid outlet pipe (2).

8. The liquid spraying structure of a spray gun according to claim 5, characterized in that: The cross section of the valve core (12) is circular, and the two ends of the valve core (12) are respectively a small end (121) and a large end (122), and the diameter of the large end (122) is larger than the diameter of the small end (121). The two connecting pieces (23) are respectively connected to the large end (122) and the small end (121) by bolts, and the connecting pieces (23) can be abutted against the outer wall of the adjustable valve body (3).

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