Spray head

Abstract

The utility model discloses a spray head which comprises a gun barrel and a first spray nozzle, one end of the gun barrel is an adjusting water outlet end, the first spray nozzle is movably connected with the adjusting water outlet end, a through fluid channel is formed in the gun barrel in the axial direction of the gun barrel, and through water distribution holes are formed in the adjusting water outlet end in the radial direction of the gun barrel. The water distribution hole is communicated with the fluid channel and the first nozzle, the periphery of the adjusting water outlet end and the inner wall of the first nozzle are provided with pressure adjusting parts matched with each other, and the first nozzle can move in the axial direction of the gun barrel so as to adjust the opening degree of the pressure adjusting parts. According to the utility model, the linear adjustment of the water outlet pressure is realized, and the operation requirements of more working pressure ranges for cleaning in different scenes are met.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning, in particular to a spray head. Background Art

[0002] The existing nozzle technology has the following problems in practical applications: there are only two states, high pressure and low pressure, and the nozzle works normally in the two gear states; but in actual use, users need a wider range of working pressures for cleaning operations in different scenes; there are problems such as small use range of the nozzle or low cleaning efficiency. For example, in patent CN202460905U, there is only on-off between the nozzle and the slide seat, and the opening size of the on-off cannot be linearly adjusted, and it can only work in low pressure or high pressure state. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a nozzle that can linearly adjust the water outlet pressure and meet more working pressure ranges for cleaning operations in different scenarios.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A spray head comprises a gun rod and a first nozzle, one end of the gun rod is an adjustable water outlet end, the first nozzle and the adjustable water outlet end are movably connected, a through fluid channel is provided in the gun rod along the axial direction of the gun rod, the adjustable water outlet end is provided with a through water diversion hole along the radial direction of the gun rod, the water diversion hole connects the fluid channel and the first nozzle, the outer periphery of the adjustable water outlet end and the inner wall of the first nozzle are provided with a pressure regulating part that cooperates with each other, and the first nozzle can move along the axial direction of the gun rod to adjust the opening of the pressure regulating part.

[0006] In one embodiment, the pressure regulating part includes a pressure regulating platform and a first adjusting cone surface, the pressure regulating platform is arranged on the outer periphery of the adjusting water outlet end, and the first adjusting cone surface is arranged on the inner wall of the first nozzle; when the first nozzle moves along the axial direction of the gun barrel, the pressure regulating platform can contact or move away from the first adjusting cone surface to adjust the opening of the pressure regulating part.

[0007] In one embodiment, the outer periphery of the regulating water outlet end and the inner wall of the first nozzle are further provided with mutually cooperating pressure limiting parts, and when the opening of the pressure regulating part is the smallest, the pressure limiting part is closed.

[0008] In one embodiment, the pressure limiting portion includes a boss and a second adjusting cone surface, the second adjusting cone surface is arranged on the outer periphery of the adjusting water outlet end, and the boss is arranged on the inner wall of the first nozzle; when the opening of the pressure regulating portion is the smallest, the boss and the second adjusting cone surface fit together to close the pressure limiting portion.

[0009] In one embodiment, the outer wall of the gun barrel is provided with an axial limiting rib at the water outlet adjustment end, and the inner wall of the first nozzle is provided with an axial limiting groove corresponding to the position of the axial limiting rib, and the axial limiting rib is embedded in the axial limiting groove.

[0010] In one embodiment, the nozzle further includes a shell, in which the first nozzle and at least a portion of the gun rod are installed, the shell is movably connected to an outer wall of the first nozzle, and the shell rotates around the circumference of the gun rod to drive the first nozzle to move along the axial direction of the gun rod.

[0011] In one embodiment, an outer wall of the first nozzle is provided with an external thread, an inner wall of the shell is provided with an internal thread, and the first nozzle is connected to the shell through the external thread and the internal thread.

[0012] In one embodiment, a circumferential limiting groove is provided on the outer wall of the gun barrel, and a circumferential limiting rib is provided on the housing at a position corresponding to the circumferential limiting groove, and the circumferential limiting rib is embedded in the circumferential limiting groove.

[0013] In one embodiment, a second nozzle is provided in the gun rod at the regulating water outlet end, and the second nozzle is communicated with the fluid channel.

[0014] In one embodiment, both ends of the gun barrel are provided with annular grooves along the circumference, and sealing rings are provided in the annular grooves.

[0015] The beneficial effects of the utility model are as follows: the first nozzle and the adjusting water outlet end of the gun rod are movably connected, the outer periphery of the adjusting water outlet end and the inner wall of the first nozzle are provided with mutually cooperating pressure regulating parts, the first nozzle can move along the axial direction of the gun rod to adjust the opening size of the pressure regulating part, so that the nozzle adjusts the water pressure between low pressure and high pressure, realizes linear adjustment of the interception state and linear adjustment of the water outlet pressure, solves the problem that the pressure of the original nozzle during spraying has only two gears of high and low, meets more working pressure ranges for cleaning operations in different scenes, and improves the use range of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is an exploded view of a nozzle according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A cross-sectional view of the first nozzle in FIG.

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle gun rod;

[0020] Figure 4 yes Figure 1 A schematic cross-sectional view of the nozzle assembled;

[0021] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A under low pressure state;

[0022] Figure 6 yes Figure 4 A local enlarged schematic diagram of point A in the voltage regulation state;

[0023] Figure 7 yes Figure 4 A local enlarged schematic diagram of point A under high pressure state.

[0024] In the figure: 1. gun barrel; 11. adjusting water outlet; 12. fluid channel; 13. water distribution hole; 14. pressure regulating platform; 15. second adjusting cone; 16. axial limit rib; 17. circumferential limit groove; 18. annular groove; 2. first nozzle; 21. first adjusting cone; 22. boss; 23. axial limit groove; 24. external thread; 3. shell; 31. internal thread; 32. circumferential limit rib; 33. first shell; 34. second shell; 4. second nozzle; 41. nozzle groove; 5. sealing ring; 6. screw. DETAILED DESCRIPTION

[0025] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0028] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0029] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0030] The utility model provides a spray head, such as Figures 1 to 7 As shown, it includes a gun barrel 1 and a first nozzle 2, one end of the gun barrel 1 is an adjustable water outlet end 11, the first nozzle 2 and the adjustable water outlet end 11 are movably connected, a through fluid channel 12 is provided in the gun barrel 1 along the axial direction of the gun barrel 1, the adjustable water outlet end 11 is provided with a through water diversion hole 13 along the radial direction of the gun barrel 1, the water diversion hole 13 connects the fluid channel 12 and the first nozzle 2, the outer periphery of the adjustable water outlet end 11 and the inner wall of the first nozzle 2 are provided with a pressure regulating part that cooperates with each other, and the first nozzle 2 can move along the axial direction of the gun barrel 1 to adjust the opening of the pressure regulating part. In this embodiment, the first nozzle 2 is movably connected to the adjustable water outlet end 11 of the gun rod 1, and the outer periphery of the adjustable water outlet end 11 and the inner wall of the first nozzle 2 are provided with mutually matching pressure regulating parts, and the first nozzle 2 can move along the axial direction of the gun rod 1 to adjust the opening size of the pressure regulating part, so that the nozzle adjusts the water pressure between low pressure and high pressure, realizes linear adjustment of the interception state and linear adjustment of the water outlet pressure, solves the problem that the pressure of the original nozzle during spraying has only two gears, high and low, meets more working pressure ranges for cleaning operations in different scenes, and improves the use range of the nozzle. Among them, the first nozzle 2 can select a low-pressure fan-shaped nozzle, which has a compact structure, stable performance, uniform atomization, and its spray shape is a flat ribbon.

[0031] Specifically, Figures 4 to 7 As shown, the water pressure sprayed by the nozzle includes low pressure state, pressure adjustment state and high pressure state. One end of the gun rod 1 is a water adjustment end 11, and the other end of the gun rod 1 is used to connect a pump (not shown). The water pumped by the pump enters the fluid channel 12. Figure 5As shown, when the pressure regulating part is fully opened, a part of the water flows into the channels on both sides of the gun barrel 1 through the water diversion hole 13, and the other part of the water flows directly into the first nozzle 2 through the fluid channel 12 along a straight line. The two parts of water are combined and sprayed through the first nozzle 2. The fluid flows into the first nozzle 2 along the water diversion holes 13 on both sides and the fluid channel 12 in the middle and then sprays out. Due to the small resistance value, the cleaning machine cannot build up pressure, and it is in a low pressure state at this time; Figure 6 As shown, when the pressure regulating part is partially opened, the fluid flows into the first nozzle 2 along the water diversion hole 13 and the middle fluid channel 12 and then sprays out. According to the opening degree of the pressure regulating part, the flow of the channels on both sides of the interception is adjusted, that is, the purpose of pressure regulation and interception is achieved. At this time, it is in the pressure regulating state; as shown in FIG. Figure 7 As shown, when the pressure regulating part is completely closed, the fluid can only enter the first nozzle 2 through the middle fluid channel 12 and then be sprayed out, so as to completely cut off the flow of the channels on both sides, that is, to achieve the purpose of pressure regulation and cutoff, and it is in a high pressure state at this time.

[0032] As an implementation method, Figure 4 and Figure 5 As shown, the pressure regulating part includes a pressure regulating platform 14 and a first adjusting cone 21. The pressure regulating platform 14 is arranged on the outer periphery of the water outlet end 11, and the first adjusting cone 21 is arranged on the inner wall of the first nozzle 2. Along the fluid flow direction Q, the inner diameter of the first adjusting cone 21 gradually shrinks, so that when the pressure regulating platform 14 and the first adjusting cone 21 gradually approach or move away from each other, the size of the gap between the two channels can be adjusted to achieve water pressure adjustment; when the first nozzle 2 moves along the axial direction of the gun barrel 1, the pressure regulating platform 14 can contact or move away from the first adjusting cone 21 to adjust the opening of the pressure regulating part. Specifically, as Figure 5 As shown, the first nozzle 2 can move along the axial direction of the gun rod 1. In the low-pressure state, the pressure regulating platform 14 is away from the first regulating cone 21, and the fluid flows into the first nozzle 2 along the water diversion holes 13 on both sides and the middle fluid channel 12 and then sprays out. Due to the small resistance value, the cleaning machine cannot build up pressure, and it is in the low-pressure state at this time; Figure 6 As shown, in the pressure regulating state, the fluid flows into the first nozzle 2 along the water diversion holes 13 on both sides and the middle fluid channel 12 and then sprays out. According to the distance L of the first nozzle 2, the gap between the pressure regulating platform 14 and the first regulating cone 21 is adjusted to adjust the flow of the channels on both sides, that is, to achieve the purpose of pressure regulating and intercepting. Figure 7 As shown, in the high-pressure state, when the leftmost side of the first adjusting cone 21 is moved to contact the pressure regulating platform 14, the fluid can only enter the first nozzle 2 through the middle fluid channel 12 and then be sprayed out, thereby completely cutting off the flow of the channels on both sides, that is, achieving the purpose of pressure regulation and flow cutoff.

[0033] As an implementation mode, the outer periphery of the water outlet end 11 and the inner wall of the first nozzle 2 are further provided with a pressure limiting portion that cooperates with each other. When the opening of the pressure regulating portion is the smallest, the pressure limiting portion is closed.

[0034] As an implementation method, Figure 7 As shown, the pressure limiting part includes a boss 22 and a second adjusting cone 15. The second adjusting cone 15 is arranged on the outer periphery of the regulating water outlet 11. Along the fluid flow direction Q, the outer diameter of the second adjusting cone 15 gradually decreases. The boss 22 is arranged on the inner wall of the first nozzle 2. When the opening of the pressure regulating part is the smallest, the boss 22 and the second adjusting cone 15 fit together to close the pressure limiting part. In this embodiment, by providing the boss 22 and the second adjusting cone 15, when the leftmost side of the first adjusting cone 21 of the first nozzle 2 contacts the pressure regulating platform 14 of the gun barrel 1, the boss 22 fits the second adjusting cone 15, and a complete cone valve seal is achieved, reducing the wear of the pressure regulating platform 14 and the first adjusting cone 21 caused by interception.

[0035] As an implementation method, Figures 1 to 3 As shown, the outer wall of the gun barrel 1 is provided with an axial limiting rib 16 at the adjusting water outlet end 11, and the inner wall of the first nozzle 2 is provided with an axial limiting groove 23 corresponding to the position of the axial limiting rib 16, and the axial limiting rib 16 is embedded in the axial limiting groove 23 to prevent the gun barrel 1 and the first nozzle 2 from rotating in the circumferential direction.

[0036] As an implementation method, Figure 1 and Figure 4 As shown, the nozzle also includes a shell 3, the first nozzle 2 and at least part of the gun rod 1 are installed in the shell 3, the shell 3 is movably connected to the outer wall of the first nozzle 2, and the shell 3 rotates around the circumference of the gun rod 1 to drive the first nozzle 2 to move along the axial direction of the gun rod 1.

[0037] As an implementation method, Figure 1 and Figure 4 As shown, the outer wall of the first nozzle 2 is provided with an outer thread 24, the inner wall of the housing 3 is provided with an inner thread 31, and the first nozzle 2 is connected to the housing 3 through the outer thread 24 and the inner thread 31. The housing 3 is rotated so that the housing 3 rotates around the circumference of the gun rod 1, and the first nozzle 2 is moved along the axial direction of the gun rod 1 to adjust the size of the gap between the pressure regulating platform 14 and the first adjusting cone surface 21, thereby adjusting the water flow and water pressure.

[0038] As an implementation method, Figure 1 and Figure 4 As shown, the outer wall of the gun barrel 1 is provided with a circumferential limiting groove 17, and the housing 3 is provided with a circumferential limiting rib 32 at a position corresponding to the circumferential limiting groove 17. The circumferential limiting rib 32 is embedded in the circumferential limiting groove 17 to prevent the gun barrel 1 and the housing 3 from moving axially.

[0039] As an implementation method, Figure 1 and Figure 4As shown, a second nozzle 4 is provided at the water outlet end 11 in the gun rod 1, and the second nozzle 4 is connected to the fluid channel 12. The water flow pumped out by the pump flows into the first nozzle 2 through the fluid channel 12 and the second nozzle 4, or the water flow pumped out by the pump flows through the fluid channel 12 and the water diversion hole 13 (channels on both sides) and is ejected through the first nozzle 2. Among them, the second nozzle 4 includes a nozzle groove 41, through which the water pattern angle is adjusted, and the nozzle groove 41 is a non-circular structure.

[0040] As an implementation method, Figure 1 , Figure 3 and Figure 4 As shown, both ends of the gun rod 1 are provided with annular grooves 18 along the circumferential direction, and sealing rings 5 ​​are provided in the annular grooves 18 to improve the sealing performance of the connection between the gun rod 1 and the first nozzle 2, as well as the sealing performance of the connection between the gun rod 1 and the pump.

[0041] As an implementation method, Figure 1 As shown, the housing 3 includes a first housing 33 and a second housing 34 . The first housing 33 and the second housing 34 are detachably connected. The first housing 33 and the second housing 34 can be connected by screws 6 , which is convenient for disassembly and installation.

[0042] Nozzle installation relationship:

[0043] (1) The second nozzle 4 is installed in the gun barrel 1, and the water pattern angle is adjusted through the nozzle groove 41.

[0044] (2) Sealing rings 5 ​​are mounted on both ends of the gun barrel 1.

[0045] (3) The axial limiting rib 16 of the gun rod 1 matches the axial limiting groove 23 of the first nozzle 2 , and the gun rod 1 is inserted into the first nozzle 2 .

[0046] (4) The circumferential limiting ribs 32 of the housing 3 are inserted into the circumferential limiting grooves 17 of the gun barrel 1 and connected by screws 6 to form a whole.

[0047] The low-pressure state, voltage-adjusting state, and high-pressure state processes of the utility model are as follows:

[0048] (1) Low-pressure state: The housing 3 rotates, forcing the first nozzle 2 to move along the axial direction of the gun barrel 1. When the pressure regulating platform 14 of the gun barrel 1 is away from the first regulating cone 21 of the first nozzle 2, the fluid is sprayed out along the water diversion holes 13 and the second nozzle 4 on both sides. Due to the small resistance value, the cleaning machine cannot build up pressure, and the test fluid is in a low-pressure state.

[0049] (2) Pressure regulation state: the housing 3 rotates, forcing the first nozzle 2 to move along the axial direction of the gun barrel 1. When the first adjusting cone 21 of the first nozzle 2 contacts the pressure regulating platform 14 of the gun barrel 1, the fluid is ejected along the water diversion holes 13 and the second nozzle 4 on both sides. The moving distance L of the first nozzle 2 in the axial direction is adjusted to adjust the distance between the first adjusting cone 21 and the pressure regulating platform 14, so as to adjust the flow of the channels on both sides of the interception, that is, to achieve the purpose of pressure regulation and interception.

[0050] (3) High-pressure state: The housing 3 rotates, forcing the first nozzle 2 to move along the axial direction of the gun barrel 1. When the first adjusting cone 21 of the first nozzle 2 moves to the pressure regulating platform 14 of the gun barrel 1, and the leftmost side of the first adjusting cone 21 of the first nozzle 2 moves to the pressure regulating platform 14 of the gun barrel 1, the fluid can only be sprayed out through the second nozzle 4, thereby completely cutting off the flow of the channels on both sides, that is, achieving the purpose of pressure regulation and flow cutoff.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A nozzle, characterized in that: The invention comprises a gun rod (1) and a first nozzle (2), one end of the gun rod (1) is an adjustable water outlet end (11), the first nozzle (2) and the adjustable water outlet end (11) are movably connected, a through fluid channel (12) is provided in the gun rod (1) along the axial direction of the gun rod (1), the adjustable water outlet end (11) is provided with a through water diversion hole (13) along the radial direction of the gun rod (1), the water diversion hole (13) connects the fluid channel (12) and the first nozzle (2), the outer periphery of the adjustable water outlet end (11) and the inner wall of the first nozzle (2) are provided with a pressure regulating part that cooperates with each other, and the first nozzle (2) can move along the axial direction of the gun rod (1) to adjust the opening of the pressure regulating part.

2. The nozzle according to claim 1, characterized in that The pressure regulating portion comprises a pressure regulating platform (14) and a first regulating conical surface (21); the pressure regulating platform (14) is arranged on the outer periphery of the regulating water outlet end (11); the first regulating conical surface (21) is arranged on the inner wall of the first nozzle (2); when the first nozzle (2) moves along the axial direction of the gun barrel (1), the pressure regulating platform (14) can contact or move away from the first regulating conical surface (21) to adjust the opening of the pressure regulating portion.

3. The nozzle according to claim 1, characterized in that The outer periphery of the regulating water outlet end (11) and the inner wall of the first nozzle (2) are also provided with mutually matching pressure limiting parts, and when the opening of the pressure regulating part is the smallest, the pressure limiting part is closed.

4. The nozzle according to claim 3, characterized in that The pressure limiting portion comprises a boss (22) and a second adjusting conical surface (15), wherein the second adjusting conical surface (15) is arranged on the outer periphery of the adjusting water outlet end (11), and the boss (22) is arranged on the inner wall of the first nozzle (2); when the opening of the pressure regulating portion is the smallest, the boss (22) and the second adjusting conical surface (15) are in contact with each other.

5. The nozzle according to claim 1, characterized in that The outer wall of the gun rod (1) is provided with an axial limiting rib (16) at the regulating water outlet end (11), and the inner wall of the first nozzle (2) is provided with an axial limiting groove (23) at a position corresponding to the axial limiting rib (16), and the axial limiting rib (16) is embedded in the axial limiting groove (23).

6. The nozzle according to any one of claims 1 to 5, characterized in that: The spray head further comprises a shell (3), the first nozzle (2) and at least part of the gun rod (1) are installed in the shell (3), the shell (3) is movably connected to the outer wall of the first nozzle (2), and the shell (3) rotates around the circumference of the gun rod (1) to drive the first nozzle (2) to move along the axial direction of the gun rod (1).

7. The nozzle according to claim 6, characterized in that The outer wall of the first nozzle (2) is provided with an external thread (24), the inner wall of the shell (3) is provided with an internal thread (31), and the first nozzle (2) and the shell (3) are connected by the external thread (24) and the internal thread (31).

8. The nozzle according to claim 6, characterized in that The outer wall of the gun barrel (1) is provided with a circumferential limiting groove (17), and the housing (3) is provided with a circumferential limiting rib (32) at a position corresponding to the circumferential limiting groove (17), and the circumferential limiting rib (32) is embedded in the circumferential limiting groove (17).

9. The nozzle according to claim 1, characterized in that: A second nozzle (4) is provided in the gun rod (1) at the regulating water outlet end (11), and the second nozzle (4) is connected to the fluid channel (12).

10. The nozzle according to claim 1, characterized in that Both ends of the gun rod (1) are provided with annular grooves (18) along the circumferential direction, and sealing rings (5) are provided in the annular grooves (18).

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