Spray gun

Abstract

The spray gun comprises a gun body, a wrench is arranged at the front end of the gun body, a large cover is arranged at the lower end of the gun body, a water inlet is formed in the lower end of the gun body, a water outlet is formed in the front side of the upper end of the gun body, a connecting port is formed in the front side of the lower end of the gun body, and a water outlet cavity is formed in the gun body. The connector is connected with a compressed air assembly, the compressed air assembly is connected with the wrench, and the water outlet is provided with a water outlet assembly; an elastic seat is clamped to the upper portion of the large cover, the upper end of the elastic seat is inserted into the water outlet cavity of the gun body and seals the water inlet, a through hole communicated with the water outlet cavity is formed in the elastic seat, and an elastic ball is arranged on the upper portion of the elastic seat and movably arranged in the water outlet cavity and can seal the through hole; the elastic seat and the elastic block are both made of PP materials. Through the arrangement of the marble and the marble base, after pressure difference is formed inside and outside the movement of the compressed air assembly, water bursts through the marble and enters the gun body from the marble base, the spray explosive force is stronger, the residue is less, and the marble base and the marble block which are made of PP materials can be suitable for liquid with the PH value of 11.

Description

Technical Field

[0001] The utility model relates to the technical field of hand-button spray equipment, in particular to a spray gun. Background Art

[0002] A sprayer is a product that uses a piston to move in a pump body, causing the gas inside the pump body to flow, the pressure to decrease, and the pressure outside the pump body to remain unchanged. A pressure difference is generated inside and outside the pump body, and the liquid is directed out of the pump body through the pressure difference. When the liquid hits the high-speed airflow, it is instantly atomized. According to their size, they are divided into two types: micro sprayers and large sprayers. Among them, large sprayers are used for large-area sprinkler irrigation such as fields, and micro sprayers are hand-button or press-type and are used by hand. The existing hand-button sprayer is mainly composed of a gun body, a cover, a large circle, a straw, a piston, a head cap, a water diverter, a wrench, etc. By continuously pressing the wrench, the liquid will be continuously sprayed out in a mist. However, the main disadvantages of the existing hand-button sprayer are: the spray burst force is not strong, there is a lot of residue, and the internal structure design is not perfect. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is to provide a spray gun with stronger spray explosive force, less residue and applicable to liquid with pH=11.

[0005] (II) Technical solution

[0006] The solution adopted by the utility model to solve the above technical problems is a spray gun, comprising a gun body, a wrench is provided at the front end of the gun body, a large cover is provided at the lower end of the gun body, a water inlet for water inlet is provided at the lower end of the gun body, a water outlet for water outlet is provided at the front side of the upper end, and a connecting port for compressed air is provided at the front side of the lower end, a water outlet cavity connecting the water inlet, the water outlet and the connecting port is provided in the gun body; a compressed air component is connected to the connecting port, the compressed air component is connected to the wrench for compressing the air in the water outlet cavity, and a water outlet component is provided at the water outlet for spraying liquid; a spring seat is clamped on the upper part of the large cover, and the upper end of the spring seat is inserted in the water outlet cavity of the gun body and seals the water inlet, a through hole connected to the water outlet cavity is provided on the spring seat, a marble is provided on the upper part of the spring seat, and the marble can be movably arranged in the water outlet cavity and can seal the through hole; the spring seat and the bullet block are both made of PP material;

[0007] A horizontally arranged piston installation cavity communicating with the connecting port is provided at the middle position of the gun body.

[0008] By adopting the above scheme, by setting the marble and the bullet seat, after the pressure difference is formed inside and outside the compressed air component, water flushes the marble from the bullet seat into the gun body. The spray explosion force is stronger and the residue is less. The bullet seat and bullet block made of PP material can be used for liquids with PH=11.

[0009] Preferably, the spring seat consists of a vertical part and a transverse part, the vertical part is arranged at the upper end of the transverse part, the transverse part is clamped in the water inlet, the vertical part is connected to the water outlet cavity, the vertical part includes a first section and a second section, the second section is arranged on the upper side of the first section and has a diameter smaller than the diameter of the first section.

[0010] Preferably, the compressed air assembly includes a piston and a barrel spring, the barrel spring being disposed in the piston mounting cavity and abutting against the side bottom wall of the piston mounting cavity, the piston being disposed on a side of the barrel spring away from the side bottom wall of the piston mounting cavity and connected to the barrel spring, the piston being interference fit with the connecting port and partially extending out of the connecting port, and the piston extending out of the connecting port being connected to the wrench.

[0011] As a further preference, the barrel spring is arranged in a barrel shape with one end open, the piston is provided with a mounting hole at one end close to the barrel spring, the open end of the barrel spring is inserted into the mounting hole to fix the barrel spring on the piston, and a positioning structure is provided on the side bottom wall of the piston mounting cavity for positioning the barrel spring.

[0012] Preferably, the water outlet assembly includes a water diverter head and a head cap, the head cap is sleeved on the water outlet of the gun body, the water diverter head is arranged in the water outlet cavity and seals the water outlet, and the head cap is provided with a water outlet hole connected to the water outlet.

[0013] As a further preference, a mesh is provided at the water outlet, and the mesh is made of PP material.

[0014] Preferably, a gasket for sealing is provided at the connection position between the large cover and the spring seat.

[0015] Preferably, a straw is inserted into the through hole, and a water inlet channel connected to the water outlet cavity is provided on the straw, and the marble is used to seal or open the water inlet channel.

[0016] Preferably, a connecting ear is provided at the upper end of the wrench, and the wrench is hinged to the peripheral wall of the gun body through the connecting ear.

[0017] Preferably, the gun body is outer-coated with a gun cover.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model designs a spray gun.

[0020] (1) By setting the marbles and the bullet seat, the spray explosion force is stronger and the residue is less, and the bullet seat and bullet block made of PP material can be used for liquids with pH = 11;

[0021] (2) By using PP marbles and mesh, the all-plastic spray gun is more compatible with liquids, avoiding chemical reactions when the built-in metal barrel spring comes into contact with some liquids;

[0022] (3) By providing a barrel-shaped spring in the gun body, the air in the gun body can be compressed and discharged more conveniently, thereby forming a pressure difference between the inside and the outside to suck the liquid into the gun body;

[0023] (4) The bullet seat arranged in an inverted "7" shape can better seal the water inlet of the gun body and prevent liquid backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the first embodiment of the spray gun of the utility model;

[0026] Figure 2 This is a schematic diagram of a first explosion structure of a spray gun according to a first embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of a second explosion structure of the first embodiment of the spray gun of the utility model;

[0028] Figure 4 It is a first cross-sectional structural schematic diagram of the first embodiment of the spray gun of the utility model;

[0029] Figure 5 It is a second cross-sectional structural schematic diagram of the first embodiment of the spray gun of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the cartridge seat of the first embodiment of the spray gun of the utility model;

[0031] Figure 7 It is a schematic structural diagram of the barrel spring of the first embodiment of the spray gun of the utility model.

[0032] The names of the components corresponding to the various figure marks in the figure are: 1. Gun body; 11. Water inlet; 12. Water outlet; 13. Connecting port; 14. Water outlet chamber; 15. Piston mounting chamber; 2. Wrench; 3. Large cover; 31. Gasket; 4. Compressed air assembly; 41. Piston; 42. Barrel spring; 5. Water outlet assembly; 51. Water diverter; 52. Head cap; 53. Mesh; 6. Bullet seat; 61. Through hole; 62. Horizontal part; 63. Vertical part; 64. First section; 65. Second section; 7. Marbles; 8. Straw; 9. Gun cover. DETAILED DESCRIPTION

[0033] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0035] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0036] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0037] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0038] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] like Figure 1-Figure 7 As shown, a spray gun of this embodiment includes a gun body 1, a wrench 2 is provided at the front end of the gun body 1, a large cover 3 is provided at the lower end of the gun body 1, a water inlet 11 for water inlet is provided at the lower end of the gun body 1, a water outlet 12 for water outlet is provided at the front side of the upper end, and a connecting port 13 for compressed air is provided at the front side of the lower end, and a water outlet cavity 14 connecting the water inlet 11, the water outlet 12 and the connecting port 13 is provided in the gun body 1; a compressed air component 4 is connected to the connecting port 13, and the compressed air component 4 is connected to the wrench The hand 2 is connected to compress the air in the water outlet cavity 14, and the water outlet 12 is provided with a water outlet assembly 5 for spraying liquid; the upper part of the large cover 3 is clamped with a bullet seat 6, and the upper end of the bullet seat 6 is inserted into the water outlet cavity 14 of the gun body 1 and seals the water inlet 11, and the bullet seat 6 is provided with a through hole 61 connected to the water outlet cavity 14, and the upper part of the bullet seat 6 is provided with a marble 7, and the marble 7 can be movably arranged in the water outlet cavity 14 and can seal the through hole 61; the bullet seat 6 and the bullet block are both made of PP material;

[0041] A horizontally arranged piston installation cavity 15 communicating with the connecting port 13 is provided in the middle of the gun body 1 .

[0042] Specifically, in this embodiment, the gun body 1 is formed by two upper and lower connecting parts and a vertical beam, the two connecting parts are both protruding vertical beams, and the connected gun body 1 is arranged in an "F" shape, the length of the connecting part on the lower side of the gun body 1 is less than the length of the connecting part on the upper side of the gun body 1, and a water outlet 12 is opened at the front side of the upper end of the gun body 1, and a water outlet component 5 is arranged at the water outlet 12, and the water outlet component 5 seals the water outlet 12 to prevent water leakage, and the water outlet 12 is used to discharge water and spray the absorbed water, and the lower end front side of the gun body 1 is opened for A connection port 13 for compressed air is provided at the connection port 13, and the compressed air component 4 seals the connection port 13 to prevent the sucked water from leaking out from the connection port 13. The top of the wrench 2 is hinged on the gun body 1, and the middle of the wrench 2 is connected to the compressed air component 4 and is used to drive it to move so that the compressed air makes the internal air pressure of the spray gun less than the external air pressure, thereby transporting the liquid to the water outlet chamber 14 of the gun body 1. The lower end of the gun body 1 is provided with a water inlet 11, and a bullet seat 6 is provided at the water inlet 11 to seal the water inlet 11. A water outlet chamber 14 is provided on the upper connection part of the gun body 1 and the vertical beam of the gun body 1, and the water outlet chamber 14 is connected with the water outlet 12 and the water inlet 11. A piston installation chamber 15 connected with the connection port 13 is provided on the lower connection part of the gun body 1, and the piston installation chamber 15 is arranged horizontally. A through hole is provided on the inner peripheral wall of the water outlet chamber 14 of the vertical beam, and the through hole connects the water outlet chamber 14 and the connection port 13.

[0043] Specifically, in the present embodiment, a spring seat 6 is provided at the water inlet 11, and the spring seat 6 seals the water inlet 11. The spring seat 6 is composed of two parts, a vertical part 63 and a transverse part 62, which are integrally arranged. The upper end of the transverse part 62 is provided with a vertical part 63, and the upper half of the transverse part 62 is clamped in the water inlet 11 at the lower end of the gun body 1, and a convex ridge is provided on the inner wall of the water inlet 11. The upper and lower ends of the transverse part 62 are provided with an integrally arranged convex ring on the outer peripheral wall, and the convex ring cooperates with the convex ridge to clamp the spring seat 6 on the gun body 1 to seal the water inlet 11, and the lower half of the transverse part 62 is clamped in the large cover 3. A vent is also provided on the transverse part 62, and a connecting hole 61 is also provided on the gun body 1. The vent is connected to the gun body 1. The hole 61 is connected to the inside of the connection part on the lower side of the gun body 1; an installation area is set at the lower end of the horizontal part 62, and a through connection port 13 is set on the horizontal part 62. The vertical part 63 is inserted into the through connection port 13 and is located in the installation area of ​​the horizontal part 62, and is flush with the lower end surface of the horizontal part 62. The vertical part 63 extends into the water outlet cavity 14. The vertical part 63 includes a first section 64 and a second section 65. The second section 65 is set on the upper side of the first section 64 and has a diameter smaller than the diameter of the first section 64. The diameter of the second section 65 is smaller than the diameter of the first section 64, so that there is a gap between the second section 65 and the inner walls on both sides of the water outlet cavity 14, which can make it more convenient to evacuate the air. After the liquid flushes the ball, the gap can also make the liquid flow smoother.

[0044] Specifically, in this embodiment, by providing the marble 7 and the bullet seat 6, after the compressed air component 4 moves and forms a pressure difference inside and outside, water flushes the marble 7 and enters the gun body 1 from the bullet seat 6, the spray explosive force is stronger, and less residue is left, and the bullet seat 6 and the bullet block made of PP material can be used for liquids with PH=11.

[0045] Further, as a preferred embodiment, the spring seat 6 is composed of a vertical part 63 and a transverse part 62, the vertical part 63 is provided at the upper end of the transverse part 62, the transverse part 62 is clamped in the water inlet 11, the vertical part 63 is connected to the water outlet cavity 14, the vertical part 63 includes a first section 64 and a second section 65, the second section 65 is provided on the upper side of the first section 64 and has a diameter smaller than the diameter of the first section 64.

[0046] Specifically, in this embodiment, a through hole 61 connected to the water outlet chamber 14 is provided on the vertical portion 63 of the bullet seat 6 for liquid to enter the water outlet chamber 14 from the through hole 61 of the bullet seat 6, a straw 8 is inserted into the through hole 61 of the first section 64 for sucking liquid, a bullet block is provided on the bullet seat 6, and the bullet block seals the through hole 61 when no water is introduced, when the air pressure inside the gun body 1 is less than the external air pressure, the liquid will break through the bullet block and enter the water outlet chamber 14, when the air pressure is the same or greater than the external air pressure, the bullet block falls back to the bullet seat 6 by its own gravity and external pressure to seal the through hole 61; a large cover 3 is provided below the gun body 1, and the large cover 3 is used to connect the liquid bottle. The bullet seat 6 and the bullet block are both made of PP material.

[0047] Further, as a preferred embodiment, the compressed air component 4 includes a piston 41 and a barrel spring 42, the barrel spring 42 is arranged in the piston mounting chamber 15 and abuts against the side bottom wall of the piston mounting chamber 15, the piston 41 is arranged on the side of the barrel spring 42 away from the side bottom wall of the piston mounting chamber 15 and is connected to the barrel spring 42, the piston 41 is interference fit with the connecting port 13 and partially extends out of the connecting port 13, and the piston 41 extending out of the connecting port 13 is connected to the wrench 2.

[0048] Furthermore, as a preferred embodiment, the barrel spring 42 is arranged in a barrel shape with one end open, and the piston 41 is provided with a mounting hole at one end close to the barrel spring 42. The open end of the barrel spring 42 is inserted into the mounting hole to fix the barrel spring 42 on the piston 41, and a positioning structure is provided on the side bottom wall of the piston mounting cavity 15 for positioning the barrel spring 42.

[0049] Specifically, in the present embodiment, a piston mounting chamber 15 is provided on the lower connecting portion of the gun body 1, and the vent hole is connected with the piston mounting chamber 15 of the lower connecting portion of the gun body 1 through the communicating hole 61; a barrel spring 42 is provided in the piston mounting chamber 15, and the barrel spring 42 is provided in a barrel shape, and one end of the barrel spring 42 is open, and a connecting port 13 is provided on the front side of the lower connecting portion, and a piston 41 is provided on the side of the barrel spring 42 close to the connecting port 13, and a mounting hole is provided at the rear end of the piston 41 (i.e., the side close to the barrel spring 42), and a positioning structure is provided in the mounting hole, and the positioning structure is a card block, and the barrel spring 42 is inserted into the mounting hole of the piston 41, and a positioning The positioning groove of the barrel spring 42 is clamped on the clamping block. The barrel spring 42 is inserted into the mounting hole of the piston 41 and is positioned by the clamping block, so that the barrel spring 42 can be compressed horizontally without displacement, so that the air is better compressed; the front end of the piston 41 passes through the connecting port 13 and is connected to the middle position of the wrench 2. When the wrench 2 is pressed, the middle position of the wrench 2 moves toward the side close to the barrel spring 42, thereby driving the piston 41 to move and compress the barrel spring 42 to extract the internal air. The piston 41 and the connecting port 13 are interference fit to seal it, and it is always sealed during the movement process to prevent water from leaking from the connecting port 13 or air from running into the piston mounting cavity 15.

[0050] Furthermore, as a preferred embodiment, the water outlet assembly 5 includes a water diverter head 51 and a head cap 52, the head cap 52 is sleeved on the water outlet 12 of the gun body 1, the water diverter head 51 is arranged in the water outlet cavity 14 and seals the water outlet 12, and the head cap 52 is provided with a water outlet hole connected to the water outlet 12.

[0051] Specifically, in the present embodiment, the water outlet assembly 5 includes a water diverter head 51 and a head cap 52. The head cap 52 is sleeved on the water outlet 12 of the gun body 1. The water diverter head 51 is disposed in the water outlet cavity 14 and seals the water outlet 12. A fixed cavity is provided on the water diverter head 51. The head cap 52 is partially inserted in the fixed cavity. A water outlet hole connected to the water outlet 12 is provided on the head cap 52.

[0052] Further, as a preferred embodiment, a mesh 53 is provided at the water outlet. The mesh 53 is made of PP material.

[0053] Further, as a preferred embodiment, a straw 8 is inserted into the through hole 61, and a water inlet channel connected to the water outlet cavity 14 is provided on the straw 8, and the marble 7 is used to seal or open the water inlet channel.

[0054] Further, as a preferred embodiment, a connection ear is provided at the upper end of the wrench 2, and the wrench 2 is hinged to the peripheral wall of the gun body 1 through the connection ear. A gun cover 9 is provided on the outer shell of the gun body 1.

[0055] Specifically, in this embodiment, a plastic barrel-shaped spring 42, PP marbles 7 and PP spring seat 6 are used, and the all-plastic spray gun is more compatible with liquids, avoiding chemical reactions when the built-in metal barrel-shaped spring 42 comes into contact with some liquids; the external all-plastic spray gun makes it easier to recycle the spray gun after use, which is beneficial to environmental protection.

[0056] Embodiment 2:

[0057] The gun body 1 is integrally formed by a connecting portion and a vertical beam, and the connected gun body 1 is arranged in a "7" shape. A water outlet 12 is opened on the front side of the upper end of the gun body 1, and a water outlet component 5 is arranged at the water outlet 12, and the water outlet component 5 seals the water outlet 12 to prevent water leakage. The water outlet 12 is used to discharge water and spray out the absorbed water. A connecting port 13 for compressed air is opened in the middle position of the vertical beam of the gun body 1, and a compressed air component 4 is arranged at the connecting port 13, and the compressed air component 4 seals the connecting port 13 to prevent the sucked water from leaking from the connecting port 13. The top end of the wrench 2 is hinged on the gun body 1, and the middle part of the wrench 2 is connected to the compressed air component 4. A water inlet 11 is opened at the lower end of the gun body 1, and a spring seat 6 is arranged at the water inlet 11 to seal the water inlet 11. A water outlet chamber 14 is provided on the connecting portion on the upper side of the gun body 1 and the vertical beam of the gun body 1, and the water outlet chamber 14 is connected to the water outlet 12 and the water inlet 11. A piston mounting chamber 15 connected to the connecting port 13 is provided in the middle position of the vertical beam of the gun body 1, and the piston mounting chamber 15 is horizontally arranged. A through hole is provided on the inner peripheral wall of the water outlet chamber 14 of the vertical beam, and the through hole connects the water outlet chamber 14 and the piston mounting chamber 15.

[0058] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0059] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A spray gun, comprising a gun body (1), a wrench (2) is provided at the front end of the gun body (1), a large cover (3) is provided at the lower end of the gun body (1), a water inlet (11) for water inlet is provided at the lower end of the gun body (1), a water outlet (12) for water outlet is provided at the front side of the upper end, and a connection port (13) for compressed air is provided at the front side of the lower end, and a water outlet cavity (14) is provided in the gun body (1) to communicate with the water inlet (11), the water outlet (12) and the connection port (13); characterized in that: The connecting port (13) is connected to a compressed air component (4), and the compressed air component (4) is connected to the wrench (2) for compressing the air in the water outlet chamber (14). The water outlet (12) is provided with a water outlet component (5) for spraying liquid. The upper part of the large cover (3) is clamped with a spring seat (6), and the upper end of the spring seat (6) is inserted into the water outlet chamber (14) of the gun body (1) and seals the water inlet (11). The spring seat (6) is provided with a through hole (61) connected to the water outlet chamber (14). The upper part of the spring seat (6) is provided with a marble (7), and the marble (7) can be movably arranged in the water outlet chamber (14) and can seal the through hole (61). The spring seat (6) and the marble (7) are both made of PP material. A horizontally arranged piston installation cavity (15) communicating with the connecting port (13) is provided in the middle of the gun body (1).

2. The spray gun according to claim 1, characterized in that: The spring seat (6) is composed of a vertical part (63) and a transverse part (62), wherein the vertical part (63) is arranged at the upper end of the transverse part (62), the transverse part (62) is clamped in the water inlet (11), and the vertical part (63) is connected to the water outlet cavity (14), and the vertical part (63) includes a first section (64) and a second section (65), wherein the second section (65) is arranged on the upper side of the first section (64) and has a diameter smaller than that of the first section (64).

3. The spray gun according to claim 1, characterized in that: The compressed air assembly (4) comprises a piston (41) and a barrel spring (42); the barrel spring (42) is arranged in the piston mounting cavity (15) and abuts against the side bottom wall of the piston mounting cavity (15); the piston (41) is arranged on a side of the barrel spring (42) away from the side bottom wall of the piston mounting cavity (15) and is connected to the barrel spring (42); the piston (41) is interference fit with the connecting port (13) and partially extends out of the connecting port (13); and the piston (41) extending out of the connecting port (13) is connected to the wrench (2).

4. The spray gun according to claim 3, characterized in that: The barrel-shaped spring (42) is arranged in a barrel shape with one end open, and a mounting hole is provided at one end of the piston (41) close to the barrel-shaped spring (42). The open end of the barrel-shaped spring (42) is inserted into the mounting hole to fix the barrel-shaped spring (42) on the piston (41), and a positioning structure is provided on the side bottom wall of the piston mounting cavity (15) for positioning the barrel-shaped spring (42).

5. The spray gun according to claim 1, characterized in that: The water outlet assembly (5) comprises a water diverter head (51) and a head cap (52); the head cap (52) is sleeved on the water outlet (12) of the gun body (1); the water diverter head (51) is arranged in the water outlet cavity (14) and seals the water outlet (12); and the head cap (52) is provided with a water outlet hole connected to the water outlet (12).

6. The spray gun according to claim 5, characterized in that: A mesh sheet (53) is provided at the water outlet, and the mesh sheet (53) is made of PP material.

7. The spray gun according to claim 1, characterized in that: A gasket (31) for sealing is provided at the connection position between the large cover (3) and the spring seat (6).

8. The spray gun according to claim 1, characterized in that: A straw (8) is inserted into the through hole (61), and a water inlet channel communicating with the water outlet chamber (14) is provided on the straw (8), and the marble (7) is used to seal or open the water inlet channel.

9. The spray gun according to claim 1, characterized in that: The upper end of the wrench (2) is provided with a connecting ear, and the wrench (2) is hinged to the peripheral wall of the gun body (1) via the connecting ear.

10. The spray gun according to claim 1, characterized in that: The gun body (1) is provided with a gun cover (9) on its outer shell.

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