Steam type sprayer and medicine feeding structure thereof

Abstract

The utility model discloses a steam type sprayer and a medicine feeding structure thereof, and belongs to the field of sprayers. The medicine feeding structure of the steam type sprayer comprises a steam spraying pipe, and a conveying cavity is formed in the pipe wall of the steam spraying pipe; the conveying cavity is provided with a mist inlet and a mist outlet; the mist inlet is formed in the outer side wall of the steam spraying pipe and is communicated with the auxiliary agent pipe; the mist outlet is located in the inner side wall of the steam spraying pipe and communicated with an inner cavity of the steam spraying pipe. One end of the steam spray pipe is an outflow end, the other end of the steam spray pipe is an inflow end, and the side, close to the mist outlet, of the conveying cavity shrinks towards the outflow end, so that the mist outlet jets towards the outflow end, and the inflow end sucks air; the agent nozzle is adjacent to the outflow end and used for conveying agents, and the jet flow direction of the agent nozzle intersects with the jet flow direction of the steam spray pipe. The air and the auxiliary agent mist are converged in the steam spraying pipe, so that the spraying force of the auxiliary agent mist is greatly increased, the temperature of the steam mist is further reduced, and the influence of the auxiliary agent mist on the medicine property is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sprayers, and more specifically to a steam sprayer and a medicine delivery structure thereof. Background Art

[0002] A sprayer refers to agricultural and forestry plant protection machinery and equipment, which is widely used in pest control, disinfection or fertilization. The steam sprayer separates the agent and the auxiliary agent and heats the auxiliary agent separately, and then mixes the agent at room temperature with the auxiliary agent heated at high temperature and sprays it to ensure the medicinal properties of the agent. It has the advantages of small size and light weight.

[0003] For example, Chinese patent document (CN 219125197 U) provides a steam sprayer, including a burner shell, an end shell, an air supply mechanism and a medicine box, an inner coil is provided in the burner shell, the end shell is provided at one end of the burner shell, a burner and an end cover are provided at both ends of the end shell, and a fireproof chamber is formed in the end shell in the area between the burner and the end cover; the air supply mechanism is used to supply air into the fireproof chamber; an exhaust pipe structure is provided on the burner shell, and the exhaust pipe structure is made of metal; the outlets of the medicine box and the inner coil are connected to the nozzle.

[0004] The above device reduces the influence of high-temperature auxiliary agents on the medicine to a certain extent, but since the medicine contacts with the high-temperature auxiliary agents inside the nozzle, the medicine properties are still seriously damaged.

[0005] For the above problems, the related technologies do not provide effective solutions. Utility Model Content

[0006] In order to solve the problem of high-temperature auxiliary agents in steam sprayers damaging the medicinal properties of medicines in related technologies, the present application provides a medicine delivery structure of a steam sprayer, comprising a steam nozzle, an auxiliary agent tube and a medicine nozzle; a conveying cavity is formed in the tube wall of the steam nozzle; the conveying cavity has a mist inlet and a mist outlet; the mist inlet is located on the outer wall of the steam nozzle and is communicated with the auxiliary agent tube; the mist outlet is located on the inner wall of the steam nozzle and is communicated with the inner cavity of the steam nozzle; one end of the steam nozzle is an outlet end, and the other end of the steam nozzle is an inlet end, and a side of the conveying cavity close to the mist outlet shrinks toward the outlet end, so that the mist outlet jets toward the outlet end, and the inlet end inhales air; the medicine nozzle is arranged adjacent to the outlet end for conveying medicine, and the jet direction of the medicine nozzle intersects with the jet direction of the steam nozzle.

[0007] Furthermore, the delivery cavity at least partially circumferentially surrounds the inner wall of the steam nozzle, and the mist outlet circumferentially penetrates the inner wall of the steam nozzle.

[0008] Furthermore, the delivery cavity at least partially circumferentially surrounds the inner wall of the steam nozzle, and the mist outlet is hole-shaped; the inner wall of the steam nozzle is provided with a plurality of the mist outlets, which can eject synchronously.

[0009] Furthermore, the mist outlet is elliptical, and the major axis direction of the mist outlet extends along the jet direction of the steam nozzle, and a plurality of the mist outlets are evenly arranged along the circumference of the steam nozzle.

[0010] Furthermore, at least part of the inner wall of the steam nozzle is streamlined; or, the inner wall of the steam nozzle between the mist outlet and the flow outlet is streamlined and gradually opens outwards.

[0011] Furthermore, the distance from the mist outlet to the outflow end is smaller than the distance from the mist outlet to the inflow end.

[0012] Furthermore, the steam spray pipe is divided into a front pipe and a rear pipe with opposite end faces, and the space between the front pipe and the rear pipe forms at least a part of the conveying cavity.

[0013] Furthermore, part of the rear tube extends into the front tube, and the radial gap between the rear tube and the front tube gradually decreases, and the gap constitutes a part of the delivery cavity.

[0014] Furthermore, the steam spray pipe also includes a connecting piece, which is synchronously connected to the outer wall of the front pipe and the outer wall of the rear pipe. The connecting piece is formed with a mounting hole, and the mounting hole is connected to the auxiliary agent tube so that the auxiliary agent cavity is communicated with the auxiliary agent tube.

[0015] Furthermore, the connecting piece is a cylindrical structure, which is internally connected to the front tube and the rear tube; the connecting piece is movably connected to the front tube and / or the rear tube to change the relative distance between the front tube and the rear tube, thereby adjusting the size of the mist outlet.

[0016] Furthermore, the steam spray pipe is divided into an outer pipe and an inner pipe, the outer pipe is sleeved to the inner pipe, and the conveying cavity is formed between the inner wall of the outer pipe and the outer wall of the inner pipe; the outer pipe and the inner pipe are detachably connected.

[0017] Furthermore, the inner tube is longer than the outer tube, and both ends of the inner tube protrude from the outer tube in the axial direction; a flange larger than the inner diameter of the outer tube is formed at one end of the inner tube, and the flange abuts against the end face of the outer tube; an external thread is formed at the other end of the inner tube, a nut is sleeved on the external thread, and the nut abuts against the other end face of the outer tube through a gasket.

[0018] Furthermore, an inner thread is formed at one end of the inner tube away from the flange for threaded connection with the drug delivery structure.

[0019] To achieve the above-mentioned objectives, some embodiments of the present application further provide a steam sprayer, comprising: a burner housing, a burner and a medicine delivery structure of any one of the steam sprayers in the above-mentioned schemes; the steam nozzle is detachably connected to the medicine nozzle; the burner is installed at one end of the burner housing, and is used to provide a heat source to the burner housing; a part of the auxiliary agent tube is arranged in the burner housing, so that the auxiliary agent is heated and heated by the heat source.

[0020] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0021] In this way, since the mist outlet ejects high-pressure auxiliary agent mist toward the outlet end in the steam nozzle, negative pressure is formed inside the steam nozzle, and a large suction force is generated at the inlet end of the steam nozzle, thereby continuously inhaling fresh air. The air and the auxiliary agent mist merge in the steam nozzle, which not only greatly increases the ejection force of the auxiliary agent mist, but also further reduces the temperature of the steam mist. Moreover, after the auxiliary agent mist mixed with air is ejected from the steam nozzle, it comes into contact with the outside air again, further generating heat loss. At this time, the agent is ejected into the spraying area of ​​the auxiliary agent mist liquid again, merged with the auxiliary agent mist, and sprayed to the work object through the auxiliary agent mist, and the influence of the auxiliary agent mist on the medicinal properties of the agent is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0023] Figure 1 This is a schematic diagram of a medicine delivery structure of a steam-type sprayer according to an embodiment of the present application;

[0024] Figure 2 A schematic cross-sectional view of a medicine delivery structure of a steam-type sprayer according to an embodiment of the present application;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of the cooperation between the steam nozzle and the medicine nozzle according to an embodiment of the present application;

[0026] Figure 4 A schematic cross-sectional view of a medicine delivery structure of a steam-type sprayer according to an embodiment of the present application;

[0027] Figure 5 A schematic diagram of a cross-sectional structure of a steam nozzle according to an embodiment of the present application;

[0028] Figure 6 is a schematic cross-sectional structural diagram of an inner tube of a steam nozzle according to an embodiment of the present application;

[0029] Description of labels:

[0030] 100, steam nozzle; 100a, outer side wall; 100b, inner side wall;

[0031] 110, conveying cavity; 111, mist inlet; 112, mist outlet;

[0032] 120, outflow end;

[0033] 130, inlet end;

[0034] 140a, front pipe; 141a, rear pipe; 142a, connecting piece;

[0035] 140b, outer tube; 141b, inner tube; 142b, flange;

[0036] 150, pressurization section;

[0037] 200, pharmaceutical nozzle;

[0038] 300. Auxiliary agent tube. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0041] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0042] As an implementation mode 1 of this embodiment, Figure 1 , 2 As shown, a steam sprayer and a medicine delivery structure thereof are provided, wherein the medicine delivery structure of the steam sprayer includes a steam nozzle 100, a medicine nozzle 200 and an auxiliary agent pipe 300, which are used for the steam sprayer. Specifically, the steam sprayer also includes a burner shell and a burner, wherein the burner is installed at one end of the burner shell and is used to provide a heat source to the burner shell, and a part of the auxiliary agent pipe 300 is arranged in the burner shell, so that the auxiliary agent in the auxiliary agent pipe 300 is heated by the heat source and the liquid auxiliary agent is heated to become a high-temperature and high-pressure steam-like auxiliary agent, and the auxiliary agent pipe 300 is connected to the steam nozzle 100, and the steam-like auxiliary agent is sprayed out from the steam nozzle 100.

[0043] Preferably, the additive tube 300 in the burner housing is at least partially spiral, which increases the residence time of the additive in the burner housing and allows the liquid additive to be fully vaporized.

[0044] like Figure 1-3 As shown, a conveying cavity 110 is formed in the tube wall of the steam nozzle 100, and the conveying cavity 110 passes through the side wall of the steam nozzle 100. The conveying cavity 110 has a mist inlet 111 and a mist outlet 112. The mist inlet 111 is located on the outer wall 100a of the steam nozzle 100, and the mist inlet 111 is communicated with the auxiliary agent tube 300, and the auxiliary agent mist enters the steam nozzle 100 from the mist inlet 111. The mist outlet 112 is located on the inner wall 100b of the steam nozzle 100, and the mist outlet 112 is communicated with the inner cavity of the steam nozzle 100. Specifically, the inner cavity of the steam nozzle 100 is formed by the inner wall 100b of the steam nozzle 100.

[0045] Among them, Figure 1-3As shown, one end of the steam nozzle 100 is the outlet end 120, and the other end of the steam nozzle is the inlet end 130. The side of the conveying chamber 110 close to the mist outlet 112 shrinks toward the outlet end 120, so that the mist outlet 112 sprays toward the outlet end 120, and the inlet end 130 inhales air. The agent nozzle 200 is arranged near the outlet end 120 for conveying agents, and the jet direction of the agent nozzle 200 intersects with the jet direction of the steam nozzle 100.

[0046] In this way, since the mist outlet 112 ejects high-pressure auxiliary agent mist toward the outlet end 120 in the steam nozzle 100, negative pressure is formed inside the steam nozzle 100, and the inlet end 130 of the steam nozzle 100 generates a large suction force, thereby continuously inhaling fresh air. The air and the auxiliary agent mist merge in the steam nozzle 100, which not only greatly increases the injection force of the auxiliary agent mist, but also further reduces the temperature of the steam mist. Moreover, after the auxiliary agent mist mixed with air is ejected from the steam nozzle 100, it comes into contact with the outside air again, further generating heat loss. At this time, the agent is injected into the spraying area of ​​the auxiliary agent mist liquid again, merged with the auxiliary agent mist, and sprayed to the work object through the auxiliary agent mist, and the influence of the auxiliary agent mist on the medicinal properties of the agent is greatly reduced.

[0047] It is worth noting that the "jet" in this embodiment refers to the fluid ejected from a pipe mouth, an orifice, or a slit.

[0048] Specifically, the axis of the agent nozzle intersects with the axis of the auxiliary agent nozzle. Preferably, the angle between the two axes is 30° to 91°, such as 45°, 60°, or 90°, so that the agent and the auxiliary agent can blend after injection. It is worth noting that "intersecting" here is an ideal state. Due to assembly reasons, there may be a certain error between the two center lines, and they should be as close as possible to allow the agent and auxiliary agent to fully converge.

[0049] Specifically, the medicine nozzle 200 is connected to the medicine tube, and the medicine tube is connected to a medicine storage box for storing liquid medicine. Since the medicine has a certain consistency and the inner diameter of the medicine nozzle 200 is small, the medicine nozzle 200 is prone to blockage. Specifically, the medicine nozzle 200 and the medicine tube are split, and the two are detachably connected, such as threaded connection, card connection or plug connection, to form a quick-release structure. When the user finds that the medicine nozzle 200 is blocked, the connection between the medicine nozzle 200 and the medicine tube can be released, and a cleaning tool such as a brush can be inserted into the channel of the nozzle to clean the nozzle. After cleaning, the nozzle can be installed back into the pipeline.

[0050] In this embodiment, the medicine is injected into the spraying area of ​​the auxiliary agent mist and merged with the auxiliary agent mist. The influence of the auxiliary agent temperature on the medicinal properties of the medicine is greatly reduced, so that the efficacy of the medicine can be fully exerted.

[0051] Preferably, Figure 2As shown, the distance from the mist outlet 112 to the inlet end 130 is smaller than the distance from the mist outlet 112 to the outlet end 120 , which extends the distance that the auxiliary agent mist flows in the pipeline, so that the auxiliary agent mist and air are fully mixed and cooled in the auxiliary agent pipe 300 before being sprayed out.

[0052] Optional, such as Figure 3 As shown, the distance from the mist outlet 112 to the outflow end 120 is smaller than the distance from the mist outlet 112 to the inflow end 130 to reduce the possibility of backflow of the auxiliary agent mist.

[0053] Optionally, the distance from the mist outlet 112 to the flow outlet 120 is equal to the distance from the mist outlet 112 to the flow inlet 130 .

[0054] Among them, when the steam nozzle 100 inhales air, dust may be inhaled together, causing dirt to adhere to the inner cavity of the steam nozzle 100. Therefore, preferably, the steam nozzle 100 and the auxiliary agent tube 300 are detachably connected, such as threaded connection, snap connection or plug-in connection, to form a quick-release structure, which is convenient for users to clean, maintain or replace the steam nozzle.

[0055] As the second embodiment of this embodiment, based on the first embodiment, the medicine delivery structure of the steam sprayer is as follows:

[0056] As an alternative, Figure 3 As shown, the delivery cavity 110 at least partially circumferentially surrounds the inner wall 100b of the steam nozzle 100, and the mist outlet 112 is hole-shaped; the inner wall of the steam nozzle 100 is provided with a plurality of mist outlets 112, which can be ejected synchronously. Specifically, the mist outlet 112 is elliptical, and its long axis direction extends along the jet direction of the steam nozzle 100, and the plurality of mist outlets 112 are evenly arranged along the circumference of the steam nozzle 100.

[0057] As another alternative, Figure 4 As shown, the delivery cavity 110 at least partially circumferentially surrounds the inner wall of the steam nozzle 100, and the mist outlet 112 circumferentially penetrates the inner wall of the steam nozzle 100. The mist outlet 112 is specifically an annular slit, and the auxiliary agent mist is ejected from the annular slit, so that the auxiliary agent mist in the steam nozzle 100 is more uniform.

[0058] Other optional solutions of the mist outlet 112 are not described in detail in this embodiment.

[0059] Furthermore, the auxiliary agent cavity gradually shrinks toward the inner wall of the steam spray pipe 100 , so that the steam mist is further pressurized before being sprayed out from the mist outlet 112 .

[0060] As the third embodiment of this embodiment, based on the first or second embodiment, the medicine delivery structure of the steam sprayer is as follows:

[0061] Among them, Figure 2 , 3 As shown, the inner wall 100b of the steam nozzle 100 is partially contracted to form a pressurizing section 150, and both ends of the steam nozzle 100 are located at both ends of the pressurizing section 150, so that when the fluid at the inlet end 130 passes through the pressurizing section 150, the pressure is further increased.

[0062] Further, such as Figure 2 , 3 As shown, the auxiliary agent chamber surrounds the pressurizing section 150 and is adapted to the shape of the pressurizing section 150 , that is, when the inner wall of the steam nozzle 100 contracts, the delivery chamber 110 can be further expanded, so that the auxiliary agent is sprayed out after being fully pressurized in the auxiliary agent chamber, further increasing the spray force of the mist outlet 112 .

[0063] Specifically, if Figure 2 , 3 As shown, the inner wall 100b of the steam nozzle 100 is contracted at the side of the mist outlet 112 away from the flow outlet 120, and the contracted portion has a certain stopping effect on the auxiliary agent mist, thereby avoiding the backflow of the auxiliary agent mist as much as possible.

[0064] Further, such as Figure 2 , 3 As shown, the inner wall 100b of the steam nozzle 100 is at least partially streamlined to reduce the resistance of the fluid passing through. Figure 3 As shown, the inner wall of the steam nozzle 100 between the mist outlet 112 and the flow outlet 120 is streamlined and gradually opens outward in a cone shape. When the auxiliary agent mist is ejected from the mist outlet 112, it expands along the inner wall of the steam nozzle 100, so that the radial spray width of the steam nozzle 100 is further increased.

[0065] Optionally, in order to facilitate processing, the inner side wall 100b of the steam nozzle 100 may also be in a stepped shape.

[0066] Optional, such as Figure 4 As shown, the inner cavity of the steam nozzle 100 may also be cylindrical.

[0067] As the fourth embodiment of this embodiment, based on the first, second or third embodiment, the medicine delivery structure of the steam sprayer is as follows:

[0068] Among them, Figure 4 As shown, the nozzle 100 is divided into a front tube 140a and a rear tube 141a with opposite end surfaces, and the space between the front tube 140a and the rear tube 141a forms at least a part of the delivery chamber 110. The end of the front tube 140a away from the rear tube 141a is the outflow end 120, and the end of the rear tube 141a away from 140a is the inflow end 130.

[0069] Specifically, part of the rear tube 141a extends into the front tube 140a, and the gap between the rear tube 141a and the front tube 140a gradually decreases, and the gap constitutes a part of the delivery cavity 110 to increase the space of the delivery cavity 110. More specifically, the front tube 140a and the rear tube 141a together form a mist inlet 111 and a mist outlet 112.

[0070] Further, such as Figure 4 As shown, the steam spray pipe 100 further includes a connector 142a, which is synchronously connected to the outer wall of the front pipe 140a and the outer wall of the rear pipe 141a. The connector 142a is formed with a mounting hole, which is connected to the auxiliary agent pipe 300 so that the auxiliary agent cavity is in communication with the auxiliary agent pipe 300.

[0071] Specifically, Figure 4 As shown, the connecting member 142a is a cylindrical structure, which is internally connected to the front tube 140a and the rear tube 141a. Specifically, the connecting member is movably connected to the front tube 140a and / or the rear tube 141a, and is used to change the relative distance between the front tube 140a and the rear tube 141a, thereby adjusting the size of the mist outlet 112 to change the mist output amount of the steam spray pipe 100.

[0072] For example, the connector is threadedly connected to the front tube 140a and the rear tube 141a, and when the user rotates the connector, the front tube 140a and the rear tube 141a move closer to or farther from each other.

[0073] Optionally, the connecting member 142a may be cylindrical, or may be other structures with axial edges, or may be provided with an anti-slip structure on its surface to increase the friction with the user's hand, making it easier for the user to manipulate the connecting member 142a.

[0074] As the fifth embodiment of this embodiment, based on the first, second or third embodiment, the medicine delivery structure of the steam sprayer is as follows:

[0075] Among them, Figure 5 As shown, the steam nozzle 100 is divided into an outer tube 140b and an inner tube 141b, the outer tube 140b is sleeved to the inner tube 141b, and a conveying cavity 110 is formed between the inner wall of the outer tube 140b and the outer wall of the inner tube 141b. The outer side wall 100a of the steam nozzle 100 is located on the outer tube 140b, the mist inlet 111 is formed by the outer tube 140b, the inner side wall 100b of the steam nozzle 100 is located on the inner tube 141b, and the mist outlet 112 is formed by the inner tube 141b.

[0076] Specifically, if Figure 5 As shown, the middle portion of the inner tube 141 b is recessed toward the inner cavity of the steam spray pipe, so that the inner tube 141 b forms a nearly funnel shape to increase the space of the delivery cavity 110 .

[0077] Specifically, the outer tube 140b and the inner tube 141b are detachably connected, such as by threaded connection, plug-in connection, snap-on connection, etc., so that the user can quickly separate the inner tube 141b and the outer tube 140b, making it convenient for the user to quickly clean, maintain or partially replace the steam nozzle 100.

[0078] Specifically, if Figure 5 , 6 As shown, the length of the inner tube 141b is greater than that of the outer tube 140b, and both ends of the inner tube 141b protrude from the outer tube 140b in the axial direction. A flange 142b larger than the inner diameter of the outer tube 140b is formed at one end of the inner tube 141b, and the flange 142b abuts against the end face of the outer tube 140b, which can be directly abutted or indirectly abutted through a gasket. Further, an external thread is formed at the other end of the inner tube 141b, and a nut is sleeved on the external thread, and the nut abuts against the other end face of the outer tube 140b through a gasket. When the user needs to release the connection between the inner tube 141b and the outer tube 140b, the nut and the gasket can be removed, the flange 142b of the inner tube 141b can be held by hand, and the inner tube 141b can be pulled out from the outer tube 140b, so as to realize the rapid disassembly of the inner tube 141b and the outer tube 140b.

[0079] More specifically, an inner thread is formed at one end of the inner tube 141 b away from the flange 142 b for threaded connection with the drug delivery structure 200 .

[0080] In this application, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A medicine delivery structure of a steam sprayer, characterized in that: It includes steam spray pipe, auxiliary agent pipe and chemical agent nozzle; A conveying cavity is formed in the wall of the steam nozzle; the conveying cavity has a mist inlet and a mist outlet; the mist inlet is located on the outer wall of the steam nozzle and communicates with the auxiliary agent pipe; the mist outlet is located on the inner wall of the steam nozzle and communicates with the inner cavity of the steam nozzle; One end of the steam nozzle is an outflow end, and the other end of the steam nozzle is an inflow end. The side of the conveying cavity close to the mist outlet shrinks toward the outflow end, so that the mist outlet sprays toward the outflow end, and the inflow end inhales air. The medicine nozzle is arranged adjacent to the outflow end and is used for conveying medicine, and the jet direction of the medicine nozzle intersects with the jet direction of the steam nozzle.

2. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The delivery cavity at least partially circumferentially surrounds the inner side wall of the steam nozzle, and the mist outlet circumferentially penetrates the inner side wall of the steam nozzle.

3. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The delivery cavity at least partially circumferentially surrounds the inner side wall of the steam spray pipe, and the mist outlet is in the shape of a hole; The inner side wall of the steam spray pipe is provided with a plurality of mist outlets, which can spray synchronously.

4. The medicine delivery structure of a steam sprayer according to claim 3, characterized in that: The mist outlet is elliptical, and the long axis direction of the mist outlet extends along the jet direction of the steam nozzle. A plurality of the mist outlets are evenly arranged along the circumference of the steam nozzle.

5. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The inner wall of the steam nozzle is at least partially streamlined; or, The inner side wall of the steam spray pipe between the mist outlet and the flow outlet is streamlined and gradually opens outwards.

6. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The distance from the mist outlet to the outflow end is smaller than the distance from the mist outlet to the inflow end.

7. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The steam spray pipe is divided into a front pipe and a rear pipe with opposite end faces, and the space between the front pipe and the rear pipe forms at least a part of the conveying cavity.

8. The medicine delivery structure of a steam sprayer according to claim 7, characterized in that: Part of the rear tube extends into the front tube, and a radial gap between the rear tube and the front tube gradually decreases, and the gap constitutes a part of the delivery cavity.

9. The medicine delivery structure of a steam sprayer according to claim 7 or 8, characterized in that: The steam spray pipe also includes a connecting piece, which is synchronously connected to the outer wall of the front pipe and the outer wall of the rear pipe. The connecting piece is formed with a mounting hole, and the mounting hole is connected to the auxiliary agent pipe so that the auxiliary agent cavity is communicated with the auxiliary agent pipe.

10. The medicine delivery structure of a steam sprayer according to claim 9, characterized in that: The connecting piece is a cylindrical structure, the interior of the cylindrical structure is through and sleeved to the front tube and the rear tube; The connecting piece is movably connected to the front tube and / or the rear tube, and is used to change the relative distance between the front tube and the rear tube, thereby adjusting the size of the mist outlet.

11. The medicine delivery structure of a steam sprayer according to claim 1, characterized in that: The steam spray pipe is divided into an outer pipe and an inner pipe, the outer pipe is sleeved to the inner pipe, and the conveying cavity is formed between the inner wall of the outer pipe and the outer wall of the inner pipe; The outer tube and the inner tube are detachably connected.

12. The medicine delivery structure of a steam sprayer according to claim 11, characterized in that: The inner tube is longer than the outer tube, and both ends of the inner tube protrude from the outer tube in the axial direction; A flange having a diameter greater than that of the outer tube is formed at one end of the inner tube, and the flange abuts against an end surface of the outer tube; The other end of the inner tube is formed with an external thread, a nut is sleeved on the external thread, and the nut abuts against the other end surface of the outer tube through a gasket.

13. The medicine delivery structure of a steam sprayer according to claim 12, characterized in that: An inner thread is formed at one end of the inner tube away from the flange for threaded connection with the drug delivery structure.

14. A steam sprayer, characterized in that: include: A burner housing, a burner and a medicine delivery structure of a steam sprayer according to any one of claims 1 to 13; the steam spray pipe is detachably connected to the medicine nozzle; The burner is installed at one end of the burner shell and is used to provide a heat source into the burner shell; a part of the auxiliary agent pipe is arranged in the burner shell so that the auxiliary agent is heated by the heat source to increase its temperature.

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