CN219382428U - Spray gun structure utilizing steam sprayer - Google Patents

Abstract

The utility model discloses a spray gun structure utilizing a steam sprayer, and belongs to the technical field of steam spray guns. The spray gun comprises a gun body, wherein a steam channel is arranged in the gun body, the inlet end of the steam channel is used for being connected with a sprayer host, a steam nozzle is arranged at the outlet end of the steam channel, and the steam nozzle is used for cleaning the surface of an object by using steam; the steam nozzle is provided with an auxiliary agent pipeline which is communicated with the inside of the steam nozzle and used for providing auxiliary agent for the inside of the steam nozzle. The utility model provides a spray gun structure of a steam sprayer, which can realize stable connection and steam transmission and spraying between a main machine of the steam sprayer, and has more durable and stable operation; meanwhile, the cleaning medium (or maintenance medium) and high-temperature steam can be output, so that various use requirements of users are met.

Description

Spray gun structure utilizing steam sprayer

Technical Field

The utility model belongs to the technical field of steam spray guns, and particularly relates to a spray gun structure utilizing a steam sprayer.

Background

The steam has the characteristics of high temperature, capability of generating a large amount of steam by a small amount of liquid water, and the like, and has the advantages of good cleaning effect and water resource saving when applied to the cleaning field. In particular in the automotive field, steam cleaning plants have a number of advantages. The investment cost of the steam cleaning equipment is lower than that of an automatic car washing device, the steam cleaning equipment is more economical in water consumption than the equipment operated by high-pressure water, and water resources are saved. But the steam cleaning machine or the steam car washer in the current market has the advantages of complex equipment structure, huge volume, inconvenient use, very high cost and difficult popularization and use.

The inventor of the present application has made deep ploughing to structural improvement of the steam sprayer and expansion of application fields as a creator of the steam sprayer. Through continuous experimental study of the inventor, the portable steam sprayer is applied to the steam cleaning field, not only can the high-temperature steam be stably output to uniformly spray and clean an automobile (or household appliances or other articles), but also the cleaning medium (or maintenance medium) and the high-temperature steam can be simultaneously output, so that various use requirements of users are met, and the steam sprayer is simple in structure, low in cost and suitable for popularization and use. In order to be convenient for combine together with steam type atomizer, this application has designed the spray gun structure of a section utilization steam type atomizer, can carry out steam cleaning with the steam that steam type atomizer produced through the spray gun structure, makes it can be applicable to steam cleaning field.

Through searching, related steam cleaning is disclosed in patent literature, such as China patent application No.: 2019800177731, the utility model is named: a portable device having a spray gun containing a steam generator and a disinfectant tank which can be optimized for surface disinfection and sterilization by steam, the steam remaining on the surface of the article is purged mainly by a blowing circuit to prevent growth and inhibit bacteria, and in addition, the article can be sterilized and disinfected by the disinfectant circuit. However, in the application, the disinfectant pipeline is wrapped and sprayed by air flow, if the disinfectant is changed into a cleaning agent to be applied to the field of automobile cleaning, the cleaning agent and the water vapor are still two independent output channels, and one more blowing channel is provided, so that the manufacturing and use cost is high, and the use requirements are difficult to meet.

For another example, chinese patent application No.: 032193025, the utility model is named: a multipurpose spray gun for steam car washer is composed of a main body with steam channel and cleaning liquid channel, a cleaning liquid bottle fixed to main body, a steam outlet at one end of said steam channel, a steam inlet at another end of said steam channel, a steam switch in said steam channel for controlling the opening and closing of steam channel, and a trigger on main body for controlling the opening and closing of steam switch. This scheme is mainly used to cooperate with steam car washer, realizes steam car washer, but can't directly combine together with steam type atomizer to use, is difficult to bear the transmission of high temperature steam, and the structure is complicated, uses inconveniently.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one object of the present utility model is to provide a spray gun structure of a steam sprayer, which can realize stable connection with a main machine of the steam sprayer, steam transmission and spraying, and has more durable and stable operation; meanwhile, the cleaning medium (or maintenance medium) and high-temperature steam can be output, so that various use requirements of users are met.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The spray gun structure of the present utility model using a steam sprayer comprises:

the spray gun comprises a gun body, a steam channel is arranged in the gun body, the inlet end of the steam channel is connected with a sprayer main machine, and the outlet end of the steam channel is provided with a steam spray head;

the steam nozzle is provided with an auxiliary agent pipeline which is communicated with the inside of the steam nozzle and used for providing auxiliary agent for the inside of the steam nozzle.

Preferably, an extension tube is arranged in the steam channel, and the extension tube is a high-temperature-resistant hose;

the steam inlet of the extension tube is connected with the sprayer nozzle of the sprayer main machine, and the steam outlet of the extension tube is connected with the steam nozzle.

Preferably, at least one heat insulation layer is arranged on the periphery of the gun body, and the heat insulation layer comprises a heat insulation material layer attached to the periphery of the gun body;

or a thermal insulation paint layer is sprayed on the outer periphery of the gun body.

Preferably, the gun body is of a hollow sleeve structure, and the two axial ends of the extension tube extend beyond the two axial ends of the gun body respectively.

Preferably, the periphery of the extension tube is at least provided with a heat insulation layer, and the heat insulation layer and the extension tube are overlapped in at least partial areas in the axial direction;

the overlap region is located at an axial end of the extension tube proximate the gun body and the overlap region is at least partially located within the steam channel.

Preferably, the heat insulation layer comprises a heat insulation pipe, the heat insulation pipe is sleeved on the periphery of the extension pipe, and the inner diameter of the heat insulation pipe is larger than the outer diameter of the extension pipe, so that a certain gap is reserved between the heat insulation pipe and the extension pipe.

Preferably, the heat insulation layer comprises a protective sleeve, and the protective sleeve is sleeved on the periphery of the extension tube;

and/or the extension tube extends beyond the axial ends of the protective sleeve near the axial ends of the vapor head.

Preferably, the protective sleeve is arranged between the heat insulation pipe and the extension pipe;

or the protective sleeve is sleeved on the periphery of the heat insulation pipe.

Preferably, the spray gun further comprises: the handle is arranged on one axial side of the gun body, which is close to the steam nozzle;

and/or the grip region of the handle is arranged extending in an axial direction away from the steam nozzle.

Preferably, one end of the handle is arranged on the gun body, and the other end extends away from the direction of the steam nozzle and is suspended.

Preferably, the end part of the handle is provided with a fixing ring, and the fixing ring is clamped at the periphery of the gun body through a connecting clamping ring.

Preferably, the extension pipe is a stainless steel corrugated pipe, and the extension pipe is connected with the steam nozzle through welding or threads or is clamped.

Preferably, the end part of the gun body is provided with a lock nut, and the end part of the steam nozzle is provided with an external thread section matched with the lock nut;

and/or one side axial end of the extension tube is positioned in the steam nozzle.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the spray gun structure utilizing the steam sprayer, the steam channel is arranged in the spray gun body, the inlet end of the steam channel is connected with the sprayer main machine, and the outlet end of the steam channel is provided with the steam spray head. The sprayer main machine is used for providing required high-temperature high-pressure steam for steam cleaning, and the high-temperature high-pressure steam is uniformly sprayed through the steam nozzle, so that the automobile, household appliances or other articles to be cleaned can be cleaned, and the cleaning efficiency and the cleaning effect are improved.

(2) According to the spray gun structure utilizing the steam sprayer, when a cleaning agent or a maintenance medium or a disinfection medium is needed, the cleaning agent or the maintenance medium or the disinfection medium (or other needed mediums) is input into the steam spray head through the auxiliary agent pipeline in the time of needed use, and is sprayed out after being mixed with high-temperature and high-pressure steam generated by a sprayer main machine, and under the wrapping of the high-temperature and high-pressure steam, the cleaning agent or the maintenance medium or the disinfection medium can be sprayed out in a mist mixture mode, so that the cleaning or the maintenance effect is effectively improved.

(3) According to the spray gun structure utilizing the steam sprayer, one end of the handle is arranged on the gun body, and the other end of the handle extends away from the direction of the steam spray head and is suspended. Therefore, only one end of the handle is connected with the gun body, and the handle is connected with one side of the gun body with relatively low temperature, so that heat transfer to the handle is reduced as much as possible, the anti-scalding effect of the handle is guaranteed, and the operation is more comfortable.

(4) According to the spray gun structure utilizing the steam sprayer, in order to further reduce heat transfer between the handle and the gun body, the fixing ring is arranged at the end part of the handle and clamped on the periphery of the gun body through the connecting clamping ring, so that the handle is indirectly fixed on the gun body, direct contact between the handle and the gun body is avoided, and heat transfer can be effectively reduced.

Drawings

FIG. 1 is a schematic diagram of a connection structure between an extension nozzle and a sprayer main unit according to an embodiment of the utility model;

FIG. 2 is a schematic view of a three-layer structure of an extension tube of a spray gun according to some embodiments of the present utility model;

FIG. 3 is a schematic view of a spray gun according to another embodiment of the present utility model, in which the extension tube has a double-layer structure;

FIG. 4 is a schematic view of a single-layer structure of an extension tube of a spray gun according to other embodiments of the present utility model;

fig. 5 is a schematic cross-sectional view of fig. 2.

The reference numerals in the figures are:

100. a sprayer main unit;

110. a mist pipeline;

120. a sprayer nozzle;

210. an extension tube;

220. a protective sleeve;

230. a heat insulating pipe;

300. a spray gun;

310. installing a sleeve;

320. a steam nozzle;

330. a handle;

340. an auxiliary agent pipeline;

350. a connecting piece;

360. a fixing ring; 361. connecting a clamping ring; 362. and a connecting seat.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model is further described below with reference to examples.

Examples

As shown in fig. 1, a spray gun structure using a steam sprayer of the present embodiment includes a spray gun 300, where the spray gun 300 includes a gun body 310, and the gun body 310 is made of a high temperature resistant thermal insulation material, such as high temperature resistant ceramics, teflon, and the like. In this embodiment, a steam channel is disposed in the gun body 310, an inlet end of the steam channel is used for connecting with the sprayer main machine 100, an outlet end of the steam channel is provided with a steam nozzle 320, and the steam nozzle 320 is used for cleaning a surface of an object by using steam. In order to ensure that the steam temperature sprayed by the steam nozzle 320 meets the use requirement, the size of the exposed part of the steam nozzle 320 extending beyond the gun body 310 is not easy to be excessively large, and the condensation phenomenon of high-temperature steam at the exposed part of the steam nozzle 320 is avoided. The steam nozzle 320 in this embodiment may employ a pressurized nozzle or a self-priming nozzle or other nozzle pattern that is satisfactory for use.

Wherein the atomizer mainframe 100 comprises a burner and a combustion housing, wherein a coil pipe extending along the axial direction of the combustion housing is arranged in the combustion housing, and a spray head is arranged at the end part of the coil pipe. In this embodiment, liquid is introduced into the coil through the aerosol pipe 110, and the high-temperature flame is generated by igniting the burner to heat the coil, so that the liquid in the coil is output in the form of steam, and is used for providing the required high-temperature and high-pressure steam for cleaning the steam, and the cleaning of automobiles, household appliances or other articles to be cleaned can be realized by uniformly spraying the high-temperature and high-pressure steam, thereby improving the efficiency and cleaning effect of the cleaning work.

It is worth noting that the term "object" is herein and within the scope of the present utility model understood as any kind of solid. Thus, these objects include movable objects, as well as any object that is clamped and/or fixed or inseparable from other objects.

Because the actual steam cleaning process can not be thoroughly cleaned by means of high-temperature steam alone, a cleaning agent needs to be sprayed at the moment, and better cleaning effect can be achieved after the cleaning agent is mixed with dirt. For this purpose, in one preferred embodiment, the steam nozzle 320 is provided with an auxiliary agent pipe 340, and the auxiliary agent pipe 340 is connected to the inside of the steam nozzle 320, so as to provide auxiliary agent to the inside of the steam nozzle 320. The auxiliary agent may be a medium such as a cleaning agent or a maintenance agent, and may be a solid or other medium, not limited to a liquid. The spray gun structure of current steam cleaner or steam car washer, its steam dryness humidity is difficult to realize accurate regulation and control, and if need to regulate and control the steam dryness humidity in this embodiment, only need let in water in auxiliary agent pipeline 340, through the velocity of flow size of the interior water of control auxiliary agent pipeline 340, can the accurate control mix the dry humidity of steam.

When the cleaning agent or the maintenance medium or the disinfection medium is needed, the cleaning agent or the maintenance medium or the disinfection medium (or other needed medium) is input into the steam nozzle 320 through the auxiliary agent pipeline 340 in the time of needed use, is mixed with the high-temperature and high-pressure steam generated by the sprayer main machine 100 and then sprayed out, and can be sprayed out in the form of a mist mixture under the wrapping of the high-temperature and high-pressure steam, so that the cleaning agent or the maintenance medium or the disinfection medium is sprayed on the surface of an object more uniformly, and the cleaning or the maintenance effect is effectively improved.

In order to reduce heat loss and possibility of false scald during the steam transportation, one of the preferred design schemes is that an extension tube 210 is arranged in the steam channel in the embodiment, a steam inlet of the extension tube 210 is connected with the sprayer nozzle 120 of the sprayer main machine 100, a steam outlet of the extension tube 210 is connected with the steam nozzle 320, and the extension tube 210 is a high temperature resistant hose, wherein the length of the extension tube 210 is 0.5 m-3.0 m, for example, the length of the extension tube 210 can be 0.5m, 1.5m, 2.5m and 3.0m, so as to meet the use requirement of steam cleaning. Because the sprayer main unit 100 sprays high-temperature and high-pressure steam, heat preservation and heat insulation treatment is needed, so that heat shock is prevented in the transportation process, and the subsequent steam cleaning effect is prevented from being influenced. Adopt the structural design of high temperature resistant hose, can bear the weight of transportation high temperature high pressure steam on the one hand, effectively prevent the heat excessive, on the other hand can also realize freely dragging, folding, it is more nimble changeable to use.

To ensure that the sprayed steam temperature meets the use requirement, at least one thermal insulation layer is arranged on the periphery of the gun body 310 to reduce the dissipation of steam heat entering the gun body 310. One of the preferred schemes is that in some embodiments, the heat insulation layer comprises a heat insulation material layer attached to the periphery of the gun body 310, and the heat insulation material can be made of common rock wool materials, glass wool, aluminum silicate wool materials and the like, so that heat loss of high-temperature steam in the gun body 310 can be effectively prevented, and the risk of false contact scalding can be effectively reduced. As another implementation way, a heat-insulating paint layer is sprayed on the outer peripheral surface of the gun body 310, and a layer of heat-insulating paint, such as aerogel, is brushed on the outer peripheral surface of the gun body 310, so that a compact heat-insulating layer can be formed on the outer peripheral surface of the gun body 310, and an excellent heat-insulating effect is achieved.

In order to achieve stable installation of the extension tube 210 and the steam nozzle 320, one of the alternative solutions is that the gun body 310 in this embodiment is a hollow sleeve structure, and two axial ends of the extension tube 210 respectively extend beyond two axial ends of the gun body 310. The gun body 310 can be held by a hand, the angle and the direction of the steam nozzle 320 are controlled to be adjusted, and the sleeve type structural design is also convenient for the hand to hold. It should be noted that, the gun body 310 is not limited to the hollow sleeve structure, and may be designed as a hollow quadrangular prism or a hollow polygonal prism structure.

In order to ensure the heat preservation and insulation effect in the vapor transmission process, one of the alternative schemes is that at least one heat insulation layer is disposed on the periphery of the extension tube 210 in this embodiment, and specifically, the heat insulation layer in this embodiment is not limited to one layer, and may be a double-layer or multi-layer structure. Wherein the insulation layer overlaps the extension tube 210 at least in a partial region in the axial direction, the overlapping region being at an axial end of the extension tube 210 facing away from the sprayer housing 100. The overlapping area in this embodiment is located at the axial end of the extension tube 210 near the gun body 310, and the overlapping area is at least partially located in the steam channel, i.e. the axial end of the gun body 310 near the gun body 310 is provided with a heat insulation layer, which at least partially has the effect of heat insulation to the gun body 310, so that a person can hold the gun body 310 by hand to perform steam cleaning operation.

The preferred design is, the insulating layer covers whole steam channel, can effectively prevent heat excessive to rifle body 310 surface, plays better thermal-insulated anti-scalding effect. Because the steam nozzle 320 is disposed at the axial end of the extension tube 210 away from the sprayer main unit 100, when in use, an operator will generally hold the end of the extension tube 210 close to the steam nozzle 320 for operation, so that the thermal insulation treatment is needed to be performed on the part close to the human body, so that the peripheral operation environment of the human body is at a proper temperature during operation, and the comfort requirement and the continuous operation possibility of the human body operation are ensured.

Because the high-temperature steam output by the sprayer main unit 100 is 400-500 degrees, even if the above heat insulation measures are adopted, the hands of the user can directly hold the sprayer, and the sprayer still has uncomfortable feeling, one of the alternative schemes is that in order to further realize the heat insulation effect, the heat insulation layer in the embodiment comprises a heat insulation pipe 230, the heat insulation pipe 230 is sleeved on the periphery of the extension pipe 210, and the inner diameter of the heat insulation pipe 230 is larger than the outer diameter of the extension pipe 210, so that a certain gap is formed between the heat insulation pipe and the heat insulation pipe. The heat insulating pipe 230 in this embodiment has a double heat insulating effect, and can further effectively suppress heat dissipation. Because the heat insulation pipe 230 is not in direct contact with the extension pipe 210, the heat absorbed by the outer surface of the heat insulation pipe 230 is reduced, so that the temperature of the outer surface of the heat insulation pipe 230 is proper, a good heat insulation effect is achieved, and the operation is more durable and stable.

One of the preferred designs is that the heat insulation layer in this embodiment includes a protective sleeve 220, and the protective sleeve 220 is sleeved on the outer periphery of the extension tube 210. Further, the axial ends of the extension pipe 210 near the steam nozzle 320 extend beyond the axial ends of the protection sleeve 220. Preferably, the protecting sleeve 220 in this embodiment is a steel wire braided sleeve structure, which can wrap the extension tube 210 inside, so as to achieve the purpose of protecting the extension tube 210 and avoid damage to the extension tube 210 during use; meanwhile, the heat insulation effect can be achieved to a certain extent.

As a choice of different mounting positions of the protection sleeve 220, in some embodiments, the protection sleeve 220 is disposed between the heat insulation pipe 230 and the extension pipe 210, and the protection sleeve 220 is directly disposed on the outer periphery of the protection sleeve 220, so as to perform a better wrapping protection function. In other embodiments, the protective sleeve 220 is sleeved on the periphery of the heat insulating tube 230, so that the heat insulating tube 230 and the extension tube 210 can be wrapped inside the protective sleeve at the same time, and the pulling of the inner heat insulating tube 230 and the extension tube 210 can be effectively avoided due to certain elasticity of the steel wire braided protective sleeve, so that the service life of the whole device is effectively prolonged.

In order to facilitate the steam cleaning operation by holding the spray gun 300 by a person, one of the preferred embodiments is that the spray gun 300 further includes a handle 330, the handle 330 is disposed on one axial side of the gun body 310 near the steam nozzle 320, one end of the handle 330 is mounted on the gun body 310, and the other end extends away from the direction of the steam nozzle 320 and is suspended. Therefore, only one end of the handle 330 is connected with the gun body 310, and the handle is connected with the side of the gun body 310 with relatively low temperature, so that heat transfer to the handle 330 is reduced as much as possible, and the scalding prevention effect of the handle 330 is ensured. Further, the holding area of the handle 330 in this embodiment extends along the axial direction away from the steam nozzle 320, so as to effectively balance the center of gravity of the whole spray gun 300, and the operation is more comfortable.

In order to further reduce heat transfer between the handle 330 and the gun body 310, a fixing ring 360 is preferably provided at an end of the handle 330 in this embodiment, the fixing ring 360 is clamped to the periphery of the gun body 310 by a connecting snap ring 361, specifically, connecting seats 362 are provided at two radial outer sides of the fixing ring 360 in this embodiment, and a through hole is provided at an end of the connecting seat 362 facing away from the fixing ring 360; the connecting snap ring 361 comprises a pair of semi-ring structures which are symmetrically designed, one ends of the pair of semi-ring structures are hinged through hinge shafts, the other ends of the pair of semi-ring structures are fixed through bolts, wherein the hinge shafts on the connecting snap ring 361 penetrate through the through holes of the connecting seat 362, the handle 330 is indirectly fixed on the gun body 310, direct contact between the handle 330 and the gun body 310 is avoided, and heat transfer can be effectively reduced.

In order to achieve stable connection between the steam nozzle 320 and the sprayer nozzle 120, one of the preferred design schemes is that the extension tube 210 is a stainless steel corrugated tube in the present embodiment, and the extension tube 210 is welded or screwed or clamped with the steam nozzle 320 and the sprayer nozzle 120. Of course, other connection modes can be adopted to realize connection and fixation of the two.

When in threaded connection, the locking nut 350 is arranged at the end part of the gun body 310, the external thread section matched with the locking nut 350 is arranged at the end part of the steam nozzle 320, specifically, the locking nut 350 is arranged at the air outlet end of the extension tube 210 in the embodiment, the locking nut 350 is welded at the end part of the gun body 310 and used for fixing the extension tube 210 inside the gun body 310 and fixing the steam nozzle 320 on the locking nut 350 through threaded fit, so that the connection structural strength between the extension tube 210 and the steam nozzle 320 is ensured, and the condition that the nozzle loosens or falls in the use process is avoided. Further, in the present embodiment, an axial end of the extension tube 210 is located in the steam nozzle 320, so that the steam in the extension tube 210 can be guided into the steam nozzle 320 smoothly and sprayed through the steam nozzle 320.

In the embodiment, the spray gun 300 is used for uniformly spraying and cleaning the high-temperature steam generated by the steam sprayer main machine 100, the cleaning effect is good, and the high-temperature steam generated by the steam sprayer main machine is stably transmitted and sprayed through the threaded connection between the extension pipe 210 and the steam spray head 320, so that the operation is more durable and stable; and can output cleaning medium (or maintenance medium) and high temperature steam simultaneously, satisfy user's various user demand, the cost is lower, and the practicality is wider.

The vapor-spray device host 100 and operation according to embodiments of the present utility model are well known to those of ordinary skill in the art and will not be described in detail herein.

The examples of the present utility model are merely for describing the preferred embodiments of the present utility model, and are not intended to limit the spirit and scope of the present utility model, and those skilled in the art should make various changes and modifications to the technical solution of the present utility model without departing from the spirit of the present utility model.

Claims (13)

1. A spray gun structure using a steam sprayer, comprising:

the spray gun (300), the spray gun (300) comprises a gun body (310), and the gun body (310) is made of high-temperature resistant materials;

a steam channel is arranged in the gun body (310), the inlet end of the steam channel is used for being connected with the sprayer main machine (100), a steam nozzle (320) is arranged at the outlet end of the steam channel, and the steam nozzle (320) is used for cleaning the surface of an object by using steam;

the steam nozzle (320) is provided with an auxiliary agent pipeline (340), and the auxiliary agent pipeline (340) is communicated with the inside of the steam nozzle (320) and is used for providing auxiliary agent for the inside of the steam nozzle (320).

2. A spray gun structure using a steam sprayer according to claim 1, wherein an extension tube (210) is provided in the steam passage, the extension tube (210) being a high temperature resistant hose;

the steam inlet of the extension pipe (210) is connected with the sprayer nozzle (120) of the sprayer main machine (100), and the steam outlet of the extension pipe (210) is connected with the steam nozzle (320).

3. A spray gun structure using a steam sprayer according to claim 2, wherein at least one heat insulating layer is provided on the outer periphery of the gun body (310), and the heat insulating layer comprises a heat insulating material layer attached to the outer periphery of the gun body (310);

or a thermal insulation paint layer is sprayed on the outer peripheral surface of the gun body (310).

4. A spray gun structure using a steam atomizer according to claim 3, wherein said gun body (310) is a hollow sleeve structure, and the axial ends of said extension tube (210) extend beyond the axial ends of said gun body (310), respectively.

5. A spray gun structure using a steam atomizer according to claim 2, characterized in that the outer circumference of the extension tube (210) is provided with at least one insulation layer, which overlaps the extension tube (210) at least in a partial region in the axial direction;

the overlap region is located at an axial end of the extension tube (210) proximate the gun body (310), and the overlap region is at least partially located within the steam channel.

6. The spray gun structure according to claim 5, wherein the heat insulation layer comprises a heat insulation pipe (230), the heat insulation pipe (230) is sleeved on the periphery of the extension pipe (210), and the inner diameter of the heat insulation pipe (230) is larger than the outer diameter of the extension pipe (210) so that a certain gap exists between the heat insulation pipe and the extension pipe.

7. The spray gun structure using a steam sprayer according to claim 6, wherein the heat insulation layer comprises a protective sleeve (220), and the protective sleeve (220) is sleeved on the periphery of the extension tube (210);

and/or the axial ends of the extension tube (210) near the steam nozzle (320) extend beyond the axial ends of the protective sleeve (220).

8. A spray gun structure utilizing a steam atomizer according to claim 7, characterized in that said protective sleeve (220) is provided between said insulating tube (230) and an extension tube (210);

or the protective sleeve (220) is sleeved on the periphery of the heat insulation pipe (230).

9. A spray gun structure utilizing a vapor type atomizer according to claim 1, wherein,

the spray gun (300) further comprises:

a handle (330), wherein the handle (330) is arranged on one axial side of the gun body (310) close to the steam nozzle (320);

and/or the grip region of the handle (330) is arranged in an axial extension away from the steam nozzle (320).

10. A spray gun structure according to claim 9, characterized in that the handle (330) is mounted at one end to the gun body (310) and at the other end extends away from the direction of the steam nozzle (320) and is suspended.

11. The spray gun structure using a steam sprayer according to claim 9, wherein a fixing ring (360) is provided at an end of the handle (330), and the fixing ring (360) is engaged with the outer circumference of the gun body (310) through a connecting snap ring (361).

12. A spray gun structure using a steam sprayer according to claim 2, wherein the extension tube (210) is a stainless steel bellows, and the extension tube (210) and the steam spray head (320) are connected or clamped by welding or screwing.

13. A spray gun structure using a steam sprayer according to claim 12, wherein the end of the gun body (310) is provided with a lock nut (350), and the end of the steam nozzle (320) is provided with an external thread section matched with the lock nut (350);

and/or one axial end of the extension pipe (210) is positioned in the steam nozzle (320).