Aerosol-generating device and microspray system

Abstract

The application discloses an aerosol generating device, which has the advantages of preventing the plunger from being stuck. In addition, the application also discloses a micro-spray system. The aerosol generating device comprises a seat body, a liquid pushing assembly and a pushing assembly. The seat body is provided with a mounting cavity, a liquid inlet channel, a liquid inlet, a first air inlet and a mounting port. The mounting cavity is communicated with the liquid inlet channel. The mounting port is communicated with the liquid inlet channel. The liquid inlet is communicated with the liquid inlet channel. The first air inlet is communicated with the mounting port. The liquid pushing assembly and the pushing assembly are respectively mounted in the mounting cavity. The liquid pushing assembly comprises a fixed cylinder, a sliding sleeve, a plunger and a pushed seat. The fixed cylinder is fixedly mounted on the seat body. The sliding sleeve is sleeved on the fixed cylinder. A movement channel, which is communicated with the liquid inlet channel, is arranged in the fixed cylinder. The plunger is arranged in the movement channel. The plunger is also fixedly mounted on the pushed seat. A first elastic member is arranged between the sliding sleeve and the pushed seat. The first elastic member always has a tendency to drive the sliding sleeve and the pushed seat to move away from each other.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerosol generation, in particular to an aerosol generation device and a micro-spray system. BACKGROUND

[0002] Micro-spray lubrication generally mixes compressed gas (such as air) with a very small amount of lubricating oil to form an oil mist containing micron-sized droplets after vaporization, and then sprays the oil mist at a high speed to a cutting area or a moving pair through a nozzle, so as to effectively cool and lubricate the cutting area or the moving pair. The core component is a pump body, and the reciprocating movement of a plunger in the pump body completes the actions of oil suction and oil compression. The lubricating oil compressed out is mixed with compressed gas to form an oil mist. The plunger moves at a high speed during operation. The plunger is generally directly assembled with the pump seat. If the plunger and the pump seat are not assembled well, the plunger is prone to be stuck, which directly causes shutdown and even product scrap, thereby reducing the service life of the product.

[0003] Therefore, there is an urgent need to provide an aerosol generation device and a micro-spray system in which the plunger is not prone to be stuck to overcome the above-mentioned defects. SUMMARY

[0004] The present application aims to provide an aerosol generation device in which the plunger is not prone to be stuck.

[0005] Another object of the present application is to provide a micro-spray system including the aerosol generation device, which has the advantage that the plunger is not prone to be stuck.

[0006] To achieve the above-mentioned objects, the present application provides an aerosol generation device including a seat body, a liquid pushing assembly, and a pushing assembly. The seat body is provided with a mounting cavity, a liquid inlet channel, a liquid inlet, a first air inlet, and a mounting port. The mounting cavity is in communication with the liquid inlet channel. The mounting port is in communication with the liquid inlet channel. The liquid inlet is in communication with the liquid inlet channel. The first air inlet is in communication with the mounting port. The liquid pushing assembly and the pushing assembly are respectively installed in the mounting cavity. The liquid pushing assembly includes a fixed cylinder, a sliding sleeve, a plunger, and a pushed seat. The fixed cylinder is fixedly installed on the seat body. The sliding sleeve is sleeved on the fixed cylinder. The fixed cylinder is provided with a movement channel in communication with the liquid inlet channel. The plunger is arranged in the movement channel. The plunger is also fixedly installed on the pushed seat. A first elastic member is arranged between the sliding sleeve and the pushed seat. The first elastic member always has a tendency to drive the sliding sleeve and the pushed seat to move away from each other. The pushing assembly pushes the pushed seat to make the plunger penetrate into the movement channel. The plunger pushes the liquid in the liquid inlet channel to the mounting port, so that the liquid flowing into the mounting port and the gas flowing into the mounting port from the first air inlet are mixed to generate an aerosol.

[0007] Preferably, one end of the first elastic member is sleeved on the sliding sleeve, and the other end of the first elastic member abuts against the pushed seat.

[0008] Preferably, the liquid inlet is provided with a first one-way valve, and the mounting hole is provided with a second one-way valve; during liquid injection, the first one-way valve is closed and the second one-way valve is opened; during liquid injection, the first one-way valve is opened and the second one-way valve is closed.

[0009] Preferably, the first one-way valve comprises a valve seat, a valve core and a second elastic member, the valve seat is provided with a valve cavity, the valve core and the second elastic member are arranged in the valve cavity, the valve cavity is provided with a control port for controlling the opening and closing and an annular protrusion surrounding the control port, the valve core has a sealing plane facing the annular protrusion, and the second elastic member always has a tendency to push the valve core close to the annular protrusion so that the sealing plane tightly abuts against the annular protrusion.

[0010] Preferably, the valve cavity comprises a first cavity and a second cavity with different diameters, the annular protrusion is arranged in the first cavity, and the second elastic member and the valve core are arranged in the first cavity.

[0011] Preferably, the aerosol generating device of the application further comprises an output pipe assembly mounted on the mounting hole, the mounting hole comprises a liquid outlet channel, and the second one-way valve is arranged in the liquid outlet channel, and the second one-way valve controls the opening and closing of the liquid outlet channel and the liquid inlet channel.

[0012] Preferably, the pushing assembly comprises a pushing seat tightly abutting against the receiving seat, a sealing member is mounted on the pushing seat, the sealing member divides the mounting cavity into a first cavity and a second cavity, the liquid pushing assembly is arranged in the first cavity, and the seat body is further provided with a second air inlet communicating with the second cavity.

[0013] Preferably, the pushing assembly further comprises a fixing seat, an adjusting member and a connecting member, the fixing seat is fixedly mounted on the seat body, the first end of the adjusting member is arranged in the fixing seat in a length-adjustable manner, one end of the connecting member is mounted on the pushing seat, and the other end of the connecting member is arranged in the adjusting member.

[0014] Preferably, the pushing assembly further comprises a third elastic member arranged between the fixing seat and the first end of the adjusting member, and the third elastic member always has a tendency to drive the first end of the adjusting member to be close to the liquid pushing assembly.

[0015] The application further discloses a micro-spray system, which comprises a supporting seat and a liquid storage tank, a pressure reducing valve and the aerosol generating device arranged on the supporting seat respectively. The outlet of the liquid storage tank is communicated with the liquid inlet of the aerosol generating device, the pressure reducing valve has at least one gas outlet, and the gas outlet of the pressure reducing valve is communicated with the first air inlet of the aerosol generating device.

[0016] Compared with the prior art, in the present invention, the aerosol generating device of the present invention includes a liquid pushing component, which includes a fixed cylinder, a sliding sleeve, a plunger and a pushed seat. The sliding sleeve is slidably mounted on the fixed cylinder, and the sliding sleeve can be adjusted relative to the fixed cylinder. A first elastic member is provided between the sliding seat and the pushed seat, and the pushed seat can be adjusted relative to the sliding sleeve. The pushed seat is arranged in a "floating" manner, so that the plunger can be "adaptively" inserted into the motion channel to achieve a centered placement, thereby avoiding the plunger from being stuck due to installation errors, vibrations or other factors, and will not be stuck in the motion channel even at high speeds.

[0017] It is understandable that, since the micro-spray system of the present invention includes the above-mentioned aerosol generating device, it has the advantage of preventing the plunger from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the micro-spray system of the present invention.

[0019] Figure 2 It is a front view of the micro-spray system of the present invention.

[0020] Figure 3 It is a perspective view of the aerosol generating device of the present invention.

[0021] Figure 4 It is a top view of the aerosol generating device of the present invention.

[0022] Figure 5 The aerosol generating device of the present invention is Figure 4 A cross-sectional view of the vehicle body after the AA line segment is cut, with the plunger penetrating the motion channel, the second one-way valve open and the first one-way valve closed.

[0023] Figure 6 yes Figure 5 The aerosol generating device shown is a cross-sectional view of the aerosol generating device when the first one-way valve is opened and the second one-way valve is closed after the plunger passes through the movement channel. DETAILED DESCRIPTION

[0024] In order to explain the technical content and structural features of the present invention in detail, the following is a further description in conjunction with the embodiments and the accompanying drawings.

[0025] The present invention provides an aerosol generating device 100 for vaporizing a mixture of compressed gas (such as air) and a minute amount of a solution to form an aerosol containing micron-sized droplets. While lubricating oil is used as the solution in this invention, it is understood that the solution is not limited to oil and can also be water, alcohol, or various chemical reagents. When the compressed air and lubricating oil are mixed and vaporized, an oil mist containing micron-sized droplets is sprayed at high speed through a nozzle onto the cutting area or kinematic pair, effectively cooling and lubricating the cutting area.

[0026] The structure of the aerosol generating device 100 of the present application is described in detail below.

[0027] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the aerosol generating device 100 of the present application comprises a seat body 10, a liquid pushing assembly 20 and a pushing assembly 30. The seat body 10 is provided with a mounting cavity 11, a liquid inlet channel 12, a liquid inlet 13, a first air inlet 14 and a mounting port 15 for mounting an output pipe assembly. The mounting cavity 11 is in communication with the liquid inlet channel 12, the mounting port 15 is in communication with the liquid inlet channel 12, the liquid inlet 13 is in communication with the liquid inlet channel 12, and the first air inlet 14 is in communication with the mounting port 15. The liquid pushing assembly 20 and the pushing assembly 30 are respectively mounted in the mounting cavity 11. The liquid pushing assembly 20 comprises a fixed cylinder 21, a sliding sleeve 22, a plunger 23 and a pushed seat 24. The fixed cylinder 21 is fixedly mounted on the seat body 10, the sliding sleeve 22 is sleeved on the fixed cylinder 21, the fixed cylinder 21 is provided with a movement channel 211 in communication with the liquid inlet channel 12, the plunger 23 is arranged in the movement channel 211, the plunger 23 is further fixedly mounted on the pushed seat 24, and the first elastic member 25 is arranged between the sliding sleeve 22 and the pushed seat 24. The first elastic member 25 always has a tendency to drive the sliding sleeve 22 and the pushed seat 24 away from each other.

[0028] When the oiling operation is performed, the pushing assembly 30 pushes the pushed seat 24 to make the plunger 23 penetrate into the movement channel 211, and the plunger 23 pushes the oil in the liquid inlet channel 12 to the mounting port 15. The oil enters the output pipe assembly, the air flows into the output pipe assembly through the first air inlet 14, the oil and the air are mixed in the output pipe assembly to generate an aerosol (at this time, the aerosol is in the form of oil mist) and are output, thereby realizing oiling.

[0029] It can be understood that the pushing assembly 30 can realize continuous oiling action by repeatedly pushing the pushed seat 24. Preferably, the first elastic member 25 is a spring, but is not limited thereto.

[0030] In the present application, the liquid pushing assembly 20 comprises the fixed cylinder 21, the sliding sleeve 22, the plunger 23 and the pushed seat 24. The sliding sleeve 22 is sleeved on the fixed cylinder 21, the sliding sleeve 22 can be adjusted relative to the fixed cylinder 21, the first elastic member 25 is arranged between the sliding sleeve 22 and the pushed seat 24, the pushed seat 24 can be adjusted relative to the sliding sleeve 22, the pushed seat 24 is arranged in a “floating” manner, the plunger 23 can be “self-adaptively centered” to be arranged in the movement channel 211, the plunger 23 is placed in a centered manner, and the plunger 23 will not be stuck in the movement channel 211 even in high-speed and high-frequency movement due to installation errors, vibration or other factors.

[0031] As shown in Figure 5 and Figure 6As shown, one end of the first elastic member 25 is sleeved in the sliding sleeve 22, and the other end of the first elastic member 25 abuts against the pushing seat 24, which helps to enhance the installation stability of the first elastic member 25.

[0032] As shown in Figure 5 and Figure 6 , the liquid inlet 13 is provided with a first one-way valve 16, and the installation port 15 is provided with a second one-way valve 17. Pumping lubricating oil from the liquid inlet channel 12 to the installation port 15 is defined as pumping, and inputting oil from the liquid inlet 13 to the liquid inlet channel 12 is defined as liquid up. When pumping, the first one-way valve 16 is closed and the second one-way valve 17 is opened, and at this time, the state is as shown in Figure 5 , when liquid up, the first one-way valve 16 is opened and the second one-way valve 17 is closed, and at this time, the state is as shown in Figure 6 , so as to achieve the functions of not liquid up when pumping and not pumping when liquid up.

[0033] As shown in Figure 5 and Figure 6 , specifically, the first one-way valve 16 includes a valve seat 161, a valve core 162 and a second elastic member 163. The valve seat 161 is provided with a valve cavity, a control port for controlling the opening and closing in the valve cavity, and an annular protrusion 164 surrounding the control port. The valve core 162 has a sealing plane 165 facing the annular protrusion 164, and the second elastic member 163 always has a tendency to push the valve core 162 close to the annular protrusion 164, so that the sealing plane 165 is tightly attached to the annular protrusion 164, thereby closing the first one-way valve 16.

[0034] Since the first one-way valve 16 is used to control the opening and closing of the liquid flow, the instantaneous flow of the liquid flow is larger than that of the gas, so it is necessary to increase the pipe diameter for the liquid flow, and the ordinary one-way valve is no longer applicable, and the first one-way valve 16 needs to be used. The sealing plane 165 cooperates with the annular protrusion 164 to control the opening and closing of the first one-way valve 16. It can be understood that when the valve core 162 is away from the annular protrusion 164, the first one-way valve 16 can be opened. Further, the valve cavity includes a first cavity 166 and a second cavity 167 with different diameters, preferably, the diameter of the first cavity 166 is larger than that of the second cavity 167, the annular protrusion 164 is arranged in the first cavity 166, and the second elastic member 163 and the valve core 162 are arranged in the first cavity 166. When the sealing plane 165 is tightly attached to the annular protrusion 164, the communication between the first cavity 166 and the second cavity 167 is cut off, thereby closing the first one-way valve 16.

[0035] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the aerosol generating device 100 of the present application further comprises an output pipe assembly 40 installed in the installation port 15, the installation port 15 comprises a liquid outlet channel 151, and the second one-way valve 17 is arranged in the liquid outlet channel 151, and the second one-way valve 17 controls the opening and closing of the liquid outlet channel 151 and the liquid inlet channel 12. The output pipe assembly 40 can adopt an existing structure, and the output pipe assembly 40 comprises a gas nozzle (not shown in the figure), and the oil liquid and the compressed gas are mixed at the gas nozzle along the respective pipelines to generate the oil mist. The second one-way valve 17 can adopt an existing structure, and details are not described herein.

[0036] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the pushing assembly 30 can be a linear driving device, such as a linear motor or a pneumatic cylinder. The present application applies the pushing assembly 30 to a pneumatic mode to drive the movement.

[0037] Specifically, the pushing assembly 30 comprises a pushing seat 31, the pushing seat 31 is in close contact with the pushed seat 24, and the pushing seat 31 is provided with a sealing element 32. The sealing element 32 divides the installation cavity 11 into a first cavity 111 and a second cavity 112, the pushing liquid assembly 20 is arranged in the first cavity 111, and the seat body 10 is further provided with a second air inlet 18 in communication with the second cavity 112. After the compressed gas is injected into the second cavity 112 through the second air inlet 18, the pushing seat 31 drives the pushed seat 24 to press against the fixed cylinder 21, the plunger 23 penetrates into the movement channel 211, and the liquid is pumped. At this time, the state is as shown in Figure 5 . After the injection of the compressed gas into the second cavity 112 is paused, the first elastic element 25 is reset, the pushed seat 24 and the pushing seat 31 are driven away from the fixed cylinder 21, and the reset is performed, preparing for the next pumping of the liquid. At this time, the state is as shown in Figure 6 .

[0038] The second one-way valve 17 is a structure composed of a spring and a valve core, please refer to Figure 5 . When the plunger 23 penetrates into the movement channel 211, the pressure of the liquid inlet channel 12 increases, the valve core of the second one-way valve 17 is opened, the valve core 162 of the first one-way valve 16 remains unchanged, and the liquid flows into the liquid outlet channel 151. When the plunger 23 penetrates out of the movement channel 211, a negative pressure is formed in the liquid inlet channel 12, the valve core of the second one-way valve 17 is reset, the communication between the liquid inlet channel 12 and the liquid outlet channel 151 is cut off, at the same time, the valve core 162 of the first one-way valve 16 is compressed by the negative pressure to open the liquid inlet 13. At this time, the state is as shown in Figure 6 . The liquid is pumped. Preferably, the sealing element 32 is a Y-shaped sealing ring, but is not limited thereto.

[0039] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 .As shown, the ejection assembly 30 further includes a fixed seat 33, an adjusting member 34, and a connecting member 35. The fixed seat 33 is fixedly mounted on the base 10. The first end of the adjusting member 34 is mounted in the fixed seat 33 with adjustable length. One end of the connecting member 35 is mounted on the ejection seat 31, and the other end of the connecting member 35 is inserted into the adjusting member 34. By adjusting the length of the adjusting member 34, the distance between the adjusting member 34 and the ejection seat 31 can be adjusted, thereby adjusting the travel of the ejection seat 31 and adjusting the amount of liquid being pumped.

[0040] Preferably, the adjustment member 34 is mounted to the fixed base 33 via a threaded connection. Screwing in the adjustment member 34 reduces the travel of the pusher base 31, thereby reducing the amount of liquid dispensed. Unscrewing the adjustment member 34 increases the travel of the pusher base 31, thereby increasing the amount of liquid dispensed. The pusher base 31 stops moving when it strikes the adjustment member 34. The connecting member 35 acts as a guide.

[0041] Furthermore, the push assembly 30 includes a third elastic member 36 disposed between the fixed seat 33 and the first end of the adjusting member 34. This member constantly forces the first end of the adjusting member 34 toward the fluid pushing assembly 20. This member provides a cushioning effect. When the push seat 31 strikes the adjusting member 34, the cushioning provided by the third elastic member 36 reduces vibration and noise. Furthermore, the adjusting member 34 is continuously acted upon by the force of the third elastic member 36 during length adjustment, providing a smoother adjustment and preventing a loose or baggy feel.

[0042] The aerosol generating device 100 of the present invention can be applied to a micro-spray system 1000. Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, the micro-spray system 1000 of the present application comprises the above-mentioned aerosol generating device 100, the support base 200, the liquid storage tank 300 and the pressure reducing valve 400. The aerosol generating device 100, the liquid storage tank 300 and the pressure reducing valve 400 are respectively installed on the support base 200. The liquid storage tank 300 is arranged above the aerosol generating device 100. In the embodiments of the present application, the liquid storage tank 300 is used for storing oil. In some embodiments, the liquid storage tank 300 can be used for storing chemical reagents, water, etc. The outlet of the liquid storage tank 300 is communicated with the liquid inlet 13 of the aerosol generating device 100. The pressure reducing valve 400 reduces the pressure of compressed gas. If the push assembly 30 is driven by an electric drive / cylinder as a power source, the pressure reducing valve 400 is provided with one gas outlet. If the push assembly 30 is driven by a gas drive as a power source, the pressure reducing valve 400 is provided with at least two gas outlets. The present application adopts the gas drive as a power source. The first gas outlet of the pressure reducing valve 400 is communicated with the first gas inlet 14 of the aerosol generating device 100, and the second gas outlet of the pressure reducing valve 400 is communicated with the second gas inlet 18 of the aerosol generating device 100. In addition, in order to intermittently input compressed gas into the second gas inlet 18, the micro-spray system 1000 of the present application further comprises a pulse valve 500. The second gas outlet of the pressure reducing valve 400 is connected to the pulse valve 500 and then connected to the second gas inlet 18. The pulse valve 500 is used to intermittently input compressed gas into the second gas inlet 18.

[0043] The working process of the micro-spray system 1000 of the present application is briefly introduced as follows: the first gas outlet of the pressure reducing valve 400 outputs compressed gas. The compressed gas flows through the first gas inlet 14 and then enters the output pipe assembly 40. The second gas outlet of the pressure reducing valve 400 outputs compressed gas. The compressed gas flows through the pulse valve 500. The pulse valve 500 is opened. The compressed gas flows through the second gas inlet 18 and then flows into the second cavity 112. The compressed gas drives the pusher 31 to slide towards the fixed cylinder 21, drives the driven seat 24 to slide towards the fixed cylinder 21, and drives the plunger 23 to penetrate into the movement channel 211, so as to push the oil in the liquid inlet channel 12 out. The oil pushes the second one-way valve 17 open, flows into the liquid outlet channel 151, and performs oil injection. The oil enters the output pipe assembly 40. The compressed air in the output pipe assembly 40 and the oil are finally mixed at the nozzle to form an oil mist. At this time, the state is as shown in Figure 5 After the pulse valve 500 is closed, the first elastic member 25 is reset, drives the driven seat 24 and the pusher 31 to move away from the fixed cylinder 21, and drives the plunger 23 to penetrate out of the movement channel 211. The second one-way valve 17 is closed. The valve core 162 of the first one-way valve 16 is opened under the action of negative pressure. The oil flows into the liquid inlet channel 12 through the liquid inlet 13. The pusher 31 stops after hitting the adjusting member 34, and oil injection is performed. At this time, the state is as shown in Figure 6 After the pulse valve 500 is closed, the first elastic member 25 is reset, drives the driven seat 24 and the pusher 31 to move away from the fixed cylinder 21, and drives the plunger 23 to penetrate out of the movement channel 211. The second one-way valve 17 is closed. The valve core 162 of the first one-way valve 16 is opened under the action of negative pressure. The oil flows into the liquid inlet channel 12 through the liquid inlet 13. The pusher 31 stops after hitting the adjusting member 34, and oil injection is performed. At this time, the state is as shown in Figure 5 andFigure 6 For convenience of reading and understanding, the flow of gas is indicated by hollow arrows and the flow of oil by solid arrows.

[0044] It can be understood that if the first gas inlet 14 is blocked, only a trace of oiling action can be performed, at which time the nozzle only outputs a trace of oil; if the liquid inlet 13 is blocked, only a gas blowing action can be performed, at which time the nozzle only outputs gas.

[0045] The above only discloses preferred examples of the present application and cannot limit the scope of the rights of the present application, so equivalent changes made according to the claims of the present application all belong to the scope covered by the present application.

Claims

1. An aerosol generating device, characterized in that: The application relates to a liquid spraying device, which comprises a seat body, a liquid pushing assembly and a pushing assembly, wherein the seat body is provided with a mounting cavity, a liquid inlet channel, a liquid inlet, a first air inlet and a mounting port; the mounting cavity is communicated with the liquid inlet channel; the mounting port is communicated with the liquid inlet channel; the liquid inlet is communicated with the liquid inlet channel; the first air inlet is communicated with the mounting port; the liquid pushing assembly and the pushing assembly are respectively mounted in the mounting cavity; the liquid pushing assembly comprises a fixed cylinder, a sliding sleeve, a plunger and a pushed seat; the fixed cylinder is fixedly mounted on the seat body; the sliding sleeve is sleeved on the fixed cylinder; a movement channel, which is communicated with the liquid inlet channel, is arranged in the fixed cylinder; the plunger is arranged in the movement channel; the plunger is further fixedly mounted on the pushed seat; a first elastic member is arranged between the sliding sleeve and the pushed seat; the first elastic member always has a tendency to drive the sliding sleeve and the pushed seat to move away from each other. The pushing assembly pushes the pushed seat to make the plunger penetrate into the movement channel; the plunger pushes the liquid in the liquid inlet channel to the mounting port, so that the liquid flowing into the mounting port and the gas flowing into the mounting port from the first air inlet are mixed to generate an aerosol; one end of the first elastic member is sleeved on the sliding sleeve, and the other end of the first elastic member abuts against the pushed seat.

2. An aerosol-generating device according to claim 1, wherein, The liquid inlet is provided with a first one-way valve, and the mounting port is provided with a second one-way valve; during liquid spraying, the first one-way valve is closed and the second one-way valve is opened; during liquid filling, the first one-way valve is opened and the second one-way valve is closed.

3. An aerosol-generating device according to claim 2, wherein, The first one-way valve comprises a valve seat, a valve core and a second elastic member; a valve cavity is arranged in the valve seat; the valve core and the second elastic member are arranged in the valve cavity; a control port for controlling opening and closing is arranged in the valve cavity; an annular protrusion surrounding the control port is arranged in the valve cavity; the valve core has a sealing plane facing the annular protrusion; the second elastic member always has a tendency to push the valve core to be close to the annular protrusion, so that the sealing plane is tightly attached to the annular protrusion.

4. An aerosol-generating device according to claim 3, wherein The valve cavity comprises a first chamber and a second chamber with different diameters; the annular protrusion is arranged in the first chamber; the second elastic member and the valve core are arranged in the first chamber.

5. An aerosol-generating device according to claim 2, wherein An output pipe assembly is further mounted on the mounting port; the mounting port comprises a liquid outlet channel; the second one-way valve is arranged in the liquid outlet channel; the second one-way valve controls the opening and closing of the liquid outlet channel and the liquid inlet channel.

6. The aerosol-generating device of claim 1, wherein, The pushing assembly comprises a pushing seat; the pushing seat is tightly attached to the pushed seat; a sealing member is mounted on the pushing seat; the sealing member divides the mounting cavity into a first cavity and a second cavity; the liquid pushing assembly is arranged in the first cavity; the seat body is further provided with a second air inlet communicated with the second cavity.

7. An aerosol-generating device according to claim 6, wherein The pushing assembly further comprises a fixed seat, an adjusting member and a connecting member; the fixed seat is fixedly mounted on the seat body; the first end of the adjusting member is arranged in the fixed seat in a length-adjustable mode; one end of the connecting member is mounted on the pushing seat; the other end of the connecting member is arranged in the adjusting member.

8. An aerosol-generating device according to claim 7, wherein, The pushing assembly further comprises a third elastic member arranged between the fixing seat and the first end of the adjusting member, the third elastic member constantly has a tendency to drive the first end of the adjusting member to be close to the liquid pushing assembly.

9. A micro-spray system characterized by, The support seat, the liquid storage tank, the pressure reducing valve and the aerosol generating device are arranged on the support seat, the outlet of the liquid storage tank is communicated with the liquid inlet of the aerosol generating device, and the pressure reducing valve has at least one gas outlet, and the gas outlet of the pressure reducing valve is communicated with the first gas inlet of the aerosol generating device.

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