CN220496662U - Spray gun with adjustable spray amplitude - Google Patents

Abstract

The application relates to the technical field of spray guns and discloses a spray gun with adjustable spray amplitude: comprising the following steps: the shell is of a cylindrical structure with two open ends; the sleeve is arranged in the shell, and one end of the sleeve extending into the shell is connected with the shell in a sealing way; the spray pipe is arranged inside the sleeve, one end of the spray pipe is of a closed structure, and the middle part of the spray pipe is provided with a water inlet pipe. The following technical effects can be achieved: through the first air flue and the second air flue are communicated, air in the second air flue can be conveyed to the first air flue, the air in the first air flue can be sprayed with water mist through atomization Kong Chuidong, so that the width of spraying can be changed, the opening and closing size between the air inlet hole and the control hole can be controlled through the rotation of the limiting plate, the air quantity of the second air flue flowing into the first air flue can be controlled, and the width of spraying shape can be controlled to be adjusted.

Description

Spray gun with adjustable spray amplitude

Technical Field

The application relates to the technical field of spray guns, for example, to a spray gun with adjustable spray amplitude.

Background

At present, a spray gun is a device capable of spraying, but the spraying amplitude of the traditional spray gun is fixed, the sprayed area section is circular, when the elliptical spraying amplitude is needed, the spray nozzle can be replaced and regulated, but a single spray head can only control a single amplitude, and when spraying with different requirements, the spray head can only be replaced.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

when the spraying amplitude of the spray gun is required to be changed, the spray head can be replaced only, and the spraying width cannot be adjusted according to the spraying requirement.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a spray gun with adjustable spray amplitude, which aims to solve the problem that the spray amplitude can not be adjusted when the spray gun sprays.

In some embodiments, the spray gun with adjustable spray amplitude comprises: the shell is of a cylindrical structure with two open ends; the sleeve is arranged in the shell, one end of the sleeve extending into the shell is connected with the shell in a sealing way, and a first air passage is formed between the sleeve and the shell; the spray pipe is arranged in the sleeve, one end of the spray pipe is of a closed structure, the middle part of the spray pipe is provided with a water inlet pipe, and a second air passage is formed between the water inlet pipe and the sleeve; the air supply part is arranged at one end of the shell and communicated with the shell, and is arranged at one closed end of the spray pipe; a ventilation valve is arranged between the sleeve and the shell.

In some embodiments, the vent valve comprises: the ventilation pipe is connected to the sleeve, the ventilation pipe extends through the shell, an air inlet hole is formed in one end of the ventilation pipe, which is connected to the sleeve, the air inlet hole is an arc hole, a vent hole is further formed in the side edge of the sleeve, and the vent hole is arranged between the shell and the sleeve; the limiting plate is of a circular plate-shaped structure and is tightly attached to the bottom of the ventilation pipe, and a control hole matched with the air inlet hole is formed in the limiting plate; the adjusting rod is arranged on the limiting plate and extends out of the ventilation pipe; the wind shield is arranged on the adjusting rod, the wind shield is arranged on the outer side of the vent hole, the adjusting seat is of a tubular structure with a hole at one end, the adjusting seat is inserted and fixed in the vent pipe, and the tail end of the adjusting rod penetrates through the hole of the adjusting seat to extend outwards.

In some embodiments, a claw is arranged at one end of the adjusting seat extending into the ventilation pipe, the claw is clamped on the ventilation hole, the outer diameter of the adjusting seat corresponds to the inner diameter of the ventilation pipe, an adjusting knob is arranged outside the adjusting seat, and the adjusting knob is fixedly arranged on the adjusting rod.

In some embodiments, a compression spring is arranged between the wind shield and the adjusting seat, and the compression spring is sleeved on the adjusting rod.

In some embodiments, the tail end of the shell is provided with an air guide cover, the air guide cover is composed of a nozzle, a first air guide ring and a second air guide ring, the tail end of the spray pipe is connected with the nozzle, the periphery of the nozzle is surrounded by the first air guide ring, the first air guide ring is connected with the sleeve, the second air guide ring is sleeved outside the first air guide ring, and the second air guide ring is connected with the shell.

In some embodiments, the outer cover of the air guide cover is provided with an atomization cover, a penetrating spray hole is formed in the middle of the atomization cover, the spray hole is communicated with the second air passage, the nozzle extends out of the spray hole, and a connecting cover is sleeved on the air guide cover and the atomization cover.

In some embodiments, the atomizing cover further extends to form an atomizing part, the atomizing part is provided with atomizing holes, the atomizers Kong Kaishe are arranged on two sides of the nozzle, and the atomizing holes incline towards the spraying direction.

In some embodiments, the angle between the atomizing orifice and the spray direction of the nozzle is 30 ° to 60 °.

In some embodiments, a liquid storage tank is arranged at the lower part of the shell, and the water inlet pipe extends into the liquid storage tank.

In some embodiments, the wind shield is peripherally sleeved with a first sealing ring, and the adjusting seat is peripherally sleeved with a second sealing ring.

The spray gun with adjustable spray amplitude provided by the embodiment of the disclosure can realize the following technical effects:

through the first air flue and the second air flue are communicated, air in the second air flue can be conveyed to the first air flue, the air in the first air flue can be sprayed with water mist through atomization Kong Chuidong, so that the width of spraying can be changed, the opening and closing size between the air inlet hole and the control hole can be controlled through the rotation of the limiting plate, the air quantity of the second air flue flowing into the first air flue can be controlled, and the width of spraying shape can be controlled to be adjusted.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a spray gun with adjustable spray amplitude according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an explosion structure of a spray gun with adjustable spray amplitude according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a spray amplitude adjustable spray gun housing provided in an embodiment of the present disclosure;

FIG. 4 is a schematic view of a limiting plate structure of a spray amplitude adjustable spray gun housing provided in an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a housing provided by an embodiment of the present disclosure;

FIG. 6 is a schematic view of an air guide cover according to an embodiment of the present disclosure;

fig. 7 is a schematic view of an atomization cap according to an embodiment of the present disclosure.

Reference numerals:

100. a housing; 102. a sleeve; 103. a first airway; 104. a spray tube; 105. a water inlet pipe; 106. a second airway; 200. a gas supply section; 300. a ventilation pipe; 301. a vent hole; 302. an air inlet hole; 303. a limiting plate; 304. an adjusting rod; 305. a wind deflector; 306. an adjusting seat; 307. a claw; 308. an adjustment knob; 309. a compression spring; 400. an air guide cover; 401. a nozzle; 402. a first air guide ring; 403. a second air guide ring; 500. an atomization cover; 501. a spray hole; 502. an atomizing unit; 503. an atomization hole; 600. a liquid storage tank; 700. a first seal ring; 701. a second seal ring; 800. a connection cover; 801. and (5) controlling the hole.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1-7, an embodiment of the present disclosure provides a spray gun with adjustable spray amplitude, including a housing 100 having a cylindrical structure with two open ends; the sleeve 102 is arranged in the shell 100, one end of the sleeve 102 extending into the shell 100 is connected with the shell 100 in a sealing way, and a first air passage 103 is formed between the sleeve 102 and the shell 100; the spraying pipe 104 is arranged inside the sleeve 102, one end of the spraying pipe 104 is of a closed structure, the middle part of the spraying pipe 104 is provided with a water inlet pipe 105, and a second air passage 106 is formed between the water inlet pipe 105 and the sleeve 102; a gas supply unit 200 provided at one end of the housing 100, wherein the gas supply unit 200 communicates with the housing 100, and the gas supply unit 200 is provided at one end of the spray tube 104 that is sealed; a vent valve is disposed between the sleeve 102 and the housing 100.

By adopting the spray gun with adjustable spray amplitude provided by the embodiment of the disclosure, the shell 100 is of a cylindrical structure with two open ends, the shell 100 can be supplied with air by the air supply part 200, high-pressure air can be blown into the shell 100, one end of the sleeve 102 in the shell 100 is flush with one end of the shell 100, the other end of the sleeve 102 stretches into the shell 100, the sleeve 102 is in airtight connection with the middle part of the shell 100, a first air passage 103 is formed between the sleeve 102 and the shell 100, a spray pipe 104 is fixedly arranged in the sleeve 102, the spray pipe 104 is arranged in the sleeve 102, one end of the spray pipe 104 is flush with one end of the sleeve 102, the other end of the spray pipe 104 stretches into the shell 100, one end of the spray pipe 104 stretches into the sleeve 102 to form a sealing structure, a second air passage 106 is formed between the spray pipe 104 and the sleeve 102, the air supply part 200 can supply air into the second air passage 106, the second air passage 106 can discharge high-pressure air, when the high-pressure air is discharged, liquid in the spray pipe 104 can be carried out, and the high-pressure air can form the spray pipe 103, the discharged liquid in the spray pipe 104, the spray pipe 104 can form the spray pipe 105, the liquid can be communicated with the first air passage 103, the first air passage 102 through the first air passage 102, the air passage 106 can be communicated with the first air passage 106, the air passage 106 through the first air passage 102, the air passage is communicated with the second air passage 106, the second air passage 106 is communicated with the air passage 102, the air passage is communicated with the second air passage 106, and the air inlet valve is connected with the second air passage 106, and the air passage is connected with the air through the air passage 106, by increasing the air flow in the first air passage 103, the first air passage 103 can supply air to the atomizing part 502 on the atomizing cover 500, so that the spray amplitude of the sprayed mist can be changed, and the sprayed circular mist can be changed into an elliptical structure.

Optionally, the vent valve includes: the ventilation pipe 300 is connected to the sleeve 102, the ventilation pipe 300 extends through the shell 100, an air inlet 302 is formed in one end of the sleeve 102, which is connected with the ventilation pipe 300, the air inlet 302 is an arc-shaped hole, a vent 301 is further formed in the side edge of the sleeve 102, and the vent 301 is arranged between the shell 100 and the sleeve 102; the limiting plate 303 is in a circular plate-shaped structure and is tightly attached to the bottom of the ventilation pipe 300, and a control hole 801 matched with the air inlet 302 is formed in the limiting plate 303; the adjusting rod 304 is arranged on the limiting plate 303, and the adjusting rod 304 extends out of the ventilation pipe 300; the wind guard 305 is disposed on the adjusting rod 304, and the wind guard 305 is disposed at the outer side of the air vent 301, the adjusting seat 306 is a tubular structure with a hole at one end, the adjusting seat 306 is inserted and fixed in the air vent 300, and the end of the adjusting rod 304 extends out through the hole of the adjusting seat 306.

In this way, the ventilation valve on the sleeve 102 is composed of the ventilation tube 300 and the limiting plate 303, the ventilation tube 300 is a tubular structure with an air inlet 302 at one end, one end of the ventilation tube 300 with the air inlet 302 is arranged on the sleeve 102, one end of the ventilation tube 300 connected with the sleeve 102 is of a plane circular plate structure, the air inlet 302 is arranged on the plane plate structure, the air inlet 302 is a semicircular arc opening, the air inlet 302 can enable the air in the second air passage 106 to enter the ventilation plate, the air in the ventilation tube 300 can enter the first air passage 103 through the air vent 301, the air vent 301 is arranged on the side wall of the ventilation tube 300 between the shell 100 and the sleeve 102, the limiting plate 303 is pressed on the air inlet 302 at one end of the ventilation tube 300 connected with the sleeve 102, a control hole 801 matched with the air inlet 302 is arranged on the limiting plate 303, the control hole 801 can be driven to rotate by rotating the limiting plate 303, the ventilation amount of the air inlet 302 can be controlled through the movement of the control hole 801, the air inlet 302 can be completely closed when the control hole 801 is completely staggered with the air inlet 302, the air inlet 302 can be maximally ventilated when the control hole 801 is completely overlapped with the air inlet 302, the opening and closing size between the air inlet 302 and the control hole 801 can be controlled through rotating the limiting plate 303, the air amount flowing into the first air passage 103 by the second air passage 106 can be controlled, the change of the width of the spraying shape can be controlled, the limiting plate 303 is pressed on the air inlet 302, the limiting plate 303 is provided with the adjusting rod 304, the limiting plate 303 can be conveniently rotated through the adjusting rod 304, the adjusting rod 304 is also provided with the wind shield 305, the wind shield 305 is arranged inside the ventilation pipe 300, the ventilation pipe 300 can be sealed through the wind shield 305, thus, air can enter the ventilation pipe 300 through the air inlet 302 and then enter the first air passage 103 through the air vent 301, the wind shield 305 can be pressed in the ventilation pipe 300 through the adjusting seat 306, the adjusting rod 304 extends into the adjusting seat 306, the adjusting rod 304 extends out of the adjusting seat 306, the adjusting seat 306 extends into the ventilation pipe 300 and is clamped on the ventilation pipe 300, and the wind shield 305 can be fixed in the ventilation pipe 300.

Optionally, a claw 307 is disposed at an end of the adjusting seat 306 extending into the ventilation tube 300, the claw 307 is clamped on the ventilation hole 301, an outer diameter of the adjusting seat 306 corresponds to an inner diameter of the ventilation tube 300, an adjusting knob 308 is disposed outside the adjusting seat 306, and the adjusting knob 308 is fixedly disposed on the adjusting rod 304.

Like this, the end of adjusting seat 306 is provided with jack catch 307, can establish adjusting seat 306 card in ventilation pipe 300 through jack catch 307, and jack catch 307 can card is gone into in air vent 301, can fix adjusting seat 306 on ventilation pipe 300 like this, and adjusting seat 306 external diameter corresponds with ventilation pipe 300 internal diameter, can seal ventilation pipe 300 through adjusting seat 306, and adjusting seat 306's outside still is provided with adjust knob 308, and adjust knob 308 fixed connection is on adjusting lever 304, can rotate adjusting lever 304 through adjust knob 308.

Optionally, a compression spring 309 is disposed between the wind deflector 305 and the adjusting seat 306, and the compression spring 309 is sleeved on the adjusting rod 304.

In this way, by arranging the compression spring 309 between the wind deflector 305 and the adjusting seat 306, the wind deflector 305 can be pushed by the compression spring 309, so that the wind deflector 305 can be pushed, and the limiting plate 303 can be pushed to be pressed on the air inlet 302 by the wind deflector 305.

Optionally, an air guide cover 400 is arranged at the tail end of the shell 100, the air guide cover 400 is composed of a nozzle 401, a first air guide ring 402 and a second air guide ring 403, the tail end of the spray pipe 104 is connected with the nozzle 401, the first air guide ring 402 is arranged around the periphery of the nozzle 401, the first air guide ring 402 is connected with the sleeve 102, the second air guide ring 403 is sleeved outside the first air guide ring 402, and the second air guide ring 403 is connected with the shell 100.

Thus, the air guide cover 400 can be connected to the housing 100, the air guide cover 400 is composed of the nozzle 401, the first air guide ring 402 and the second air guide ring 403, the nozzle 401 is connected to the spray pipe 104, liquid can be discharged through the nozzle 401 to spray, the first air guide ring 402 is connected with the sleeve 102, the second air guide ring 403 is connected with the housing 100, the air guide cover 400 can be conveniently connected with the atomization cover 500, and gas can be conveniently discharged through the air guide cover 400.

Optionally, the outer cover of the air guide cover 400 is provided with an atomization cover 500, a penetrating spray hole 501 is formed in the middle of the atomization cover 500, the spray hole 501 is communicated with the second air passage 106, the nozzle 401 extends out of the spray hole 501, and a connecting cover 800 is sleeved on the air guide cover 400 and the atomization cover 500.

Thus, the atomizing cover 500 is arranged on the air guide cover 400, the atomizing cover 500 is tightly contacted with the first air guide ring 402 and the second air guide ring 403, the penetrating atomizing hole 501 is arranged in the middle of the atomizing cover 500, the nozzle 401 can extend out of the atomizing hole 501, the atomizing hole 501 can discharge air in the second air passage 106, so that liquid in the nozzle 401 can be discharged for spraying, the air in the second air passage 106 can atomize the liquid, the air guide cover 400 and the atomizing cover 500 can be fixed on the shell 100 through the connecting cover, and the atomizing cover 500 can rotate on the connecting cover.

Optionally, an atomization portion 502 is further extended from the atomization cover 500, an atomization hole 503 is formed in the atomization portion 502, the atomization hole 503 is formed on two sides of the nozzle 401, and the atomization hole 503 is inclined toward the spraying direction.

Like this, extend and be provided with atomizing portion 502 on the atomizing cover 500, and atomizing portion 502 and first air flue 103 intercommunication, the air in the first air flue 103 can be through atomizing hole 503 discharge on atomizing portion 502, and atomizing hole 503 jet direction is slope towards the direction of spraying, can blow the spraying of nozzle 401 blowout through atomizing hole 503 on atomizing portion 502, can blow the circular spraying of nozzle 401 blowout like this and warp, can blow the circular structure of spraying blowout into oval structure like this, can widen the spray range like this, the greater the amount of wind that passes through atomizing hole 503, the wider the oval spray width, the less the amount of wind that atomizing hole 503 is discharged like this, the more circular spray shape of blowout like this, the spray shape of blowout is circular when atomizing hole 503 does not discharge air.

Optionally, the included angle between the atomizing orifice 503 and the spray direction of the nozzle 401 is 30 ° -60 °.

In this way, the included angle between the atomizing hole 503 and the spraying direction of the nozzle 401 is 30 ° -60 °, the atomizing hole 503 can blow the sprayed water mist obliquely, so that the sprayed water mist can be deformed conveniently.

Optionally, a liquid storage tank 600 is disposed at the lower part of the housing 100, and the water inlet pipe 105 extends into the liquid storage tank 600.

Thus, the liquid storage tank 600 at the lower part of the housing 100 can store liquid, and the liquid in the liquid storage tank 600 can be extracted by extending the water inlet pipe 105 into the liquid storage tank 600.

Optionally, a first sealing ring 700 is sleeved on the periphery of the wind deflector 305, and a second sealing ring 701 is sleeved on the periphery of the adjusting seat 306.

In this way, the first sealing ring 700 sleeved on the periphery of the wind shield 305 can be in airtight connection with the inner wall of the ventilation pipe 300, and the second sealing ring 701 on the periphery of the adjusting seat 306 can be in airtight connection with the inner wall of the ventilation pipe 300, so that air in the ventilation pipe 300 can be prevented from being exhausted.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A spray gun with adjustable spray amplitude, comprising: a housing (100) having a tubular structure with both ends open;

the sleeve (102) is arranged in the shell (100), one end of the sleeve (102) extending into the shell (100) is connected with the shell (100) in a sealing way, and a first air passage (103) is formed between the sleeve (102) and the shell (100);

the spraying pipe (104) is arranged inside the sleeve (102), one end of the spraying pipe (104) is of a closed structure, the middle part of the spraying pipe (104) is provided with a water inlet pipe (105), and a second air passage (106) is formed between the water inlet pipe (105) and the sleeve (102);

the air supply part (200) is arranged at one end of the shell (100), the air supply part (200) is communicated with the shell (100), and the air supply part (200) is arranged at one closed end of the spray pipe (104);

a vent valve is arranged between the sleeve (102) and the shell (100).

2. The spray amplitude adjustable spray gun of claim 1, wherein the vent valve comprises:

the ventilation pipe (300) is connected to the sleeve (102), the ventilation pipe (300) extends through the shell (100), an air inlet hole (302) is formed in one end of the sleeve, which is connected with the ventilation pipe, the air inlet hole (302) is an arc hole, a vent hole (301) is further formed in the side edge of the sleeve (102), and the vent hole (301) is arranged between the shell (100) and the sleeve (102);

the limiting plate (303) is of a circular plate-shaped structure and is tightly attached to the bottom of the ventilation pipe (300), and a control hole (801) matched with the air inlet hole (302) is formed in the limiting plate (303);

the adjusting rod (304) is arranged on the limiting plate (303), and the adjusting rod (304) extends out of the ventilation pipe (300);

a wind shield (305) arranged on the adjusting rod (304), and the wind shield (305) is arranged outside the vent hole (301),

the adjusting seat (306) is of a tubular structure with a hole at one end, the adjusting seat (306) is inserted and fixed in the ventilation pipe (300), and the tail end of the adjusting rod (304) penetrates through the hole of the adjusting seat (306) to extend outwards.

3. The spray gun with adjustable spray amplitude according to claim 2, characterized in that a claw (307) is arranged at one end of the adjusting seat (306) extending into the ventilation pipe (300), the claw (307) is clamped on the ventilation hole (301), the outer diameter of the adjusting seat (306) corresponds to the inner diameter of the ventilation pipe (300), an adjusting knob (308) is arranged outside the adjusting seat (306), and the adjusting knob (308) is fixedly arranged on the adjusting rod (304).

4. Spray gun with adjustable spray amplitude according to claim 2, characterized in that a compression spring (309) is arranged between the wind deflector (305) and the adjusting seat (306), the compression spring (309) being sleeved on the adjusting rod (304).

5. The spray amplitude adjustable spray gun according to claim 1, wherein the tail end of the shell (100) is provided with an air guide cover (400), the air guide cover (400) is composed of a nozzle (401), a first air guide ring (402) and a second air guide ring (403), the tail end of the spray pipe (104) is connected with the nozzle (401), a first air guide ring (402) is arranged around the periphery of the nozzle (401), the first air guide ring (402) is connected with the sleeve (102), a second air guide ring (403) is sleeved outside the first air guide ring (402), and the second air guide ring (403) is connected with the shell (100).

6. The spray amplitude adjustable spray gun according to claim 5, wherein an atomization cover (500) is arranged on the outer cover of the air guide cover (400), a penetrating spray hole (501) is arranged in the middle of the atomization cover (500), the spray hole (501) is communicated with the second air passage (106), the spray nozzle (401) extends out of the spray hole (501), and a connecting cover (800) is sleeved on the air guide cover (400) and the atomization cover (500).

7. The spray gun with adjustable spray amplitude according to claim 6, wherein the atomizing cover (500) is further extended with an atomizing part (502), the atomizing part (502) is provided with atomizing holes (503), the atomizing holes (503) are provided on both sides of the nozzle (401), and the atomizing holes (503) are inclined towards the spray direction.

8. Spray amplitude adjustable spray gun according to claim 7, characterized in that the angle between the atomizing orifice (503) and the spray direction of the nozzle (401) is 30 ° -60 °.

9. Spray gun with adjustable spray amplitude according to claim 1, characterized in that the lower part of the housing (100) is provided with a liquid reservoir (600), the water inlet pipe (105) extending into the liquid reservoir (600).

10. The spray amplitude adjustable spray gun according to claim 2, characterized in that a first sealing ring (700) is sleeved on the periphery of the wind shield (305), and a second sealing ring (701) is sleeved on the periphery of the adjusting seat (306).