Quantitative atomization device

Abstract

The invention relates to a quantitative atomization device, which comprises a suction nozzle; the bag valve assembly comprises a valve element. A counting mechanism; the trigger mechanism comprises a trigger assembly and a first reset elastic piece; the atomization triggering assembly comprises a button piece and a limiting piece; when the suction nozzle is rotated by external force, the valve element and the trigger assembly can synchronously rotate, the valve element rotates to the liquid inlet position to trigger liquid inlet, the trigger assembly rotates to trigger counting, the trigger assembly rotates to be limited to the limiting piece and stops, and the first reset elastic piece is compressed; when the button piece is pressed by external force, the limiting piece moves, and under the bounce of the first reset elastic piece, the trigger assembly is separated from the limiting piece and drives the valve element to reset so as to trigger atomization. According to the quantitative atomization device, when liquid feeding is triggered, the stop position of the valve element is limited through the limiting piece of the atomization triggering assembly, atomization can be triggered only by pressing the button piece, so that liquid feeding and spraying cannot be conducted at the same time, and the situation that the dosage accuracy is affected due to misoperation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a quantitative atomization device. Background Art

[0002] Oral and nasal inhalation is a drug administration method that requires the coordination of drugs and devices. It is an important route of administration for the treatment of various diseases including respiratory tract and systemic diseases. When using atomization, the drug needs to be used with a spray device during the inhalation process. Good drug administration efficiency and therapeutic effect put forward higher requirements for the inhalation device.

[0003] The bag-valve atomization system refers to a pressure-resistant container with a special valve system that contains medicine, emulsion or suspension and a suitable propellant. When in use, the pressure of the propellant is used to spray the contents in the form of mist, which can be used for lung inhalation or directly sprayed onto the cavity mucosa, skin and space disinfection.

[0004] The patent with application number 202121399318.3 is an improvement based on the existing bag valve atomizer device. The atomized particles are refined by optimizing the atomizer chip, and the metering valve is added to realize the quantitative drug delivery of the atomizer device. However, when the atomizer device is in use, after the liquid inlet is triggered by rotating the upper cover, the button can be pressed when the outlet starts to spray droplets to stop the liquid inlet and trigger the spray. During the initial atomization process, the button must be pressed when the outlet starts to spray droplets, resulting in a waste of liquid medicine. In addition, the atomizer device is complicated to operate. If the user does not operate according to the operating requirements, the atomizer device will be in a liquid inlet state and continue to spray, resulting in the failure of the quantitative dosage function, and the user cannot accurately dose the drug. Summary of the invention

[0005] Based on the above-mentioned defects in the prior art, the purpose of the present invention is to provide a quantitative atomization device. When the liquid inlet is triggered, the stop position of the valve core is limited by the limiter of the atomization trigger assembly, and the atomization can only be triggered by pressing the button part, so that the liquid inlet and spraying cannot be carried out at the same time, thereby avoiding affecting the accuracy of the dosage due to improper operation.

[0006] To this end, the present invention provides the following technical solutions.

[0007] The present invention provides a quantitative atomization device, the quantitative atomization device comprising:

[0008] Suction nozzle;

[0009] A bag valve assembly, which is used to store liquid and quantitatively spray atomized particles and includes a valve core;

[0010] A counting mechanism, which is used to count the number of atomization times of the bag valve assembly;

[0011] A trigger mechanism, comprising a trigger assembly and a first resetting elastic member;

[0012] An atomization trigger assembly, comprising a button member and a limit member connected to each other;

[0013] When the suction nozzle is rotated by an external force, the valve core and the trigger assembly can rotate synchronously, the valve core rotates to the liquid inlet position to trigger the liquid inlet, the trigger assembly rotates to trigger the counting, and the trigger assembly rotates to the limit position at the limit member and stops, and the first reset elastic member is compressed;

[0014] When an external force presses the button component, the limiting component moves, and under the rebound force of the first reset elastic component, the trigger assembly is separated from the limiting component and drives the valve core to reset, so as to trigger atomization.

[0015] Preferably, the trigger mechanism includes a trigger ratchet, which is coaxially connected to the suction nozzle, and the valve core is coaxially connected to the trigger assembly; the trigger ratchet and the trigger assembly are matched through ratchets and pawls, and the suction nozzle drives the trigger assembly through the trigger ratchet to drive the valve core to rotate synchronously.

[0016] Preferably, the trigger assembly comprises a ratchet structure, a trigger member, and a first wheel body and a second wheel body that are coaxially connected, the ratchet structure is fixedly connected or rotatably connected to the first wheel body, and the ratchet structure can mesh with the trigger ratchet wheel;

[0017] The triggering member is connected to the second wheel body. When the triggering ratchet drives the first wheel body to drive the second wheel body to rotate through the pawl structure, the triggering member moves around the central axis of the second wheel body to trigger the counting.

[0018] Preferably, the trigger ratchet is an inner ratchet, and the first wheel body is located inside the trigger ratchet.

[0019] Preferably, the first wheel body and / or the second wheel body is provided with a first limiting structure, the limiting member is provided with a second limiting structure, and the first limiting structure cooperates with the second limiting structure to limit the stop position of the trigger assembly.

[0020] Preferably, the limiting member is provided with a first protrusion and a second protrusion, and the second limiting structure in the shape of a slot is formed therebetween; the first limiting structure is a protrusion structure, and the first limiting structure is circumferentially inserted into the second limiting structure to achieve limiting.

[0021] Preferably, the first protrusion is provided with a guiding slope to guide the first limiting structure to be circumferentially inserted into the second limiting structure.

[0022] Preferably, the first resetting elastic member is a planar spring, which is coaxially connected to the first wheel body or the second wheel body;

[0023] When the suction nozzle is rotated by an external force, the first resetting elastic member is compressed toward the axis;

[0024] When an external force presses the button member, the first resetting elastic member rebounds.

[0025] Preferably, the pawl structure is rotatably connected to the first wheel body, and the pawl structure can rotate under the driving of an external force to engage with or disengage from the trigger ratchet.

[0026] Preferably, the pawl structure comprises a first pawl, a first connecting shaft and a lever connected in sequence, the first connecting shaft is rotatably connected to the first wheel body; the limiting member is provided with a third protrusion, and the housing of the quantitative atomization device is provided with a fourth protrusion;

[0027] When the quantitative atomization device is in an initial state, the first pawl is engaged with the trigger ratchet;

[0028] When the trigger assembly rotates to the trigger position, the third protrusion shifts the shift rod so that the first pawl leaves the trigger ratchet;

[0029] When the trigger assembly is reset to the initial position, the fourth protrusion moves the first pawl so that the first pawl engages with the trigger ratchet.

[0030] Preferably, the shell includes an upper cover, which forms a cavity together with the suction nozzle; the counting mechanism, the trigger mechanism and the limit member are all located in the cavity, the button member is movably plugged into the upper cover, and the fourth protrusion is arranged on the inner wall of the upper cover.

[0031] Preferably, the quantitative atomization device includes an upper cover, which together with the suction nozzle forms a cavity, and the trigger mechanism is located in the cavity; the upper cover is provided with a limiting protrusion, and the second wheel body is provided with an arc-shaped limiting hole, and the limiting protrusion can be movably inserted into the limiting hole to limit the rotation angle of the second wheel body.

[0032] Preferably, the trigger member comprises a second pawl, and the counting mechanism comprises a coaxially connected ratchet and a counting disk;

[0033] When the second wheel body drives the second pawl to move, the second pawl meshes with the ratchet wheel and drives the ratchet wheel to drive the counting disk to rotate, so as to realize counting.

[0034] Preferably, the trigger member further comprises a limiting elastic member, a first limiting column and a second limiting column, the second pawl and the limiting elastic member are rotatably connected to the second wheel body respectively, and the second limiting column is used to limit the limiting elastic member;

[0035] When the trigger assembly rotates to the trigger position, the second pawl is engaged with the ratchet wheel under the limitation of the first limiting column;

[0036] When the trigger assembly is reset, under the elastic cooperation of the limiting elastic member, the second pawl jumps along the tooth surface of the ratchet wheel and disengages from the ratchet wheel.

[0037] Preferably, the counting disk comprises a ones disk and a tens disk, and the ratchet is coaxially connected to the ones disk; when the ones disk rotates ten times, the tens disk rotates once.

[0038] Preferably, the counting mechanism comprises a single-tooth cam and a first gear, the single-tooth cam is coaxially connected to the units disk, and the first gear is coaxially connected to the tens disk;

[0039] When the single-tooth cam rotates together with the ones disk for the tenth time, it drives the first gear to mesh and drive the tens disk to rotate once.

[0040] Preferably, the counting mechanism comprises a mounting shaft, a connecting member, a units transmission gear, a tens transmission gear and a second connecting shaft, wherein the units transmission gear and the tens transmission gear are coaxially connected via the second connecting shaft; one end of the connecting member is internally fixed to the mounting shaft, and the other end is fixed to the second connecting shaft, and the mounting shaft is fixed to the housing of the quantitative atomization device;

[0041] Wherein, the tens transmission gear is meshed with the first gear; and when the single-tooth cam rotates to the tenth time, it is meshed with the ones transmission gear.

[0042] Preferably, the tens disk is provided with a third limiting structure, and the upper cover of the quantitative atomization device is provided with a fourth limiting structure;

[0043] When the counting times of the counting mechanism reaches a preset value, the fourth limiting structure cooperates with the third limiting structure to limit the tens disk from continuing to rotate.

[0044] Preferably, the atomization trigger assembly comprises a second resetting elastic member for resetting the button member.

[0045] Preferably, the bag valve assembly further comprises:

[0046] A tank for containing compressed gas;

[0047] A bag body, which is located in the tank body and is used to contain liquid;

[0048] A valve body, one end of which is inserted into the bag body;

[0049] A metering bin connected to the valve body and the two are in communication;

[0050] Wherein, one end of the valve core is inserted into the valve body;

[0051] When the quantitative atomization device is in an initial state, the outer wall of the valve core closes the connection between the bag body and the valve body;

[0052] When the valve core rotates to the liquid inlet position, the bag body and the metering bin are connected through the valve core, and the liquid in the bag body enters the metering bin under the pressure of the compressed gas;

[0053] When the valve core is reset to trigger atomization, the metering chamber is communicated with the valve core, and the liquid in the metering chamber enters the valve core and is sprayed out in the form of atomization.

[0054] Preferably, the end of the valve body inserted into the bag body is provided with a first through hole extending in the axial direction, the metering chamber is provided with a second through hole, the second through hole is communicated with the chamber of the valve body, and the end of the valve core inserted into the valve body is provided with a concave cavity and a third through hole;

[0055] When the quantitative atomization device is in an initial state, the outer wall of the valve core closes the first through hole;

[0056] When the valve core rotates to the liquid inlet position, the second through hole, the concave cavity and the first through hole are connected in sequence to form a liquid inlet channel;

[0057] When the valve core is reset to trigger atomization, the second through hole is connected to the third through hole to form a liquid outlet channel.

[0058] Preferably, the metering bin comprises:

[0059] a first partition plate having a fourth through hole;

[0060] A second partition plate is provided with a fifth through hole; the first partition plate and the second partition plate are sequentially distributed along a direction toward a connection point between the metering bin and the valve body, and separate the metering bin into a first chamber, a second chamber, and a third chamber;

[0061] A quantitative plate, which is movably located in the second chamber, and a peripheral side wall of the quantitative plate abuts against an inner wall of the second chamber;

[0062] An elastic member, one end of which is connected to the cavity wall of the first cavity, and the other end of which is connected to the quantitative plate;

[0063] An air pressure balance channel, which is communicated with the first chamber and the outside respectively;

[0064] Wherein, when the quantitative atomization device is in an initial state, the elastic member passes through the fourth through hole and presses the quantitative plate against the second partition plate.

[0065] The present invention has the following technical effects:

[0066] The present invention provides a quantitative atomization device, which can trigger liquid inlet and counting by rotating the suction nozzle under the cooperation of the trigger mechanism, and the operation is simple. In addition, the stop position of the trigger component is further limited by the limiter of the atomization trigger component, and the stop position of the valve core can be limited. Moreover, the atomization can be triggered by pressing the button component to ensure that the two steps of triggering liquid inlet and triggering atomization are performed separately, avoiding the quantitative atomization device being in a state of simultaneous liquid inlet and spraying due to improper operation, resulting in inaccurate dosage, so as to ensure accurate metering. In addition, the quantitative atomization device of the present invention has a counting function, which is convenient for intuitively and accurately grasping the current cumulative use times or the remaining available times of the quantitative atomization device, so as to replace the quantitative atomization device or replenish liquid in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a schematic diagram of the explosion structure of the quantitative atomization device of the present invention;

[0068] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0069] Figure 3 Schematic diagram of the assembly structure of the trigger mechanism and the atomization trigger assembly of the present invention Figure 1 ;

[0070] Figure 4 Schematic diagram of the assembly structure of the trigger mechanism and the atomization trigger assembly of the present invention Figure 2 ;

[0071] Figure 5 It is a schematic diagram of the assembly structure of the first wheel body and the second wheel body of the present invention;

[0072] Figure 6 It is a three-dimensional structural schematic diagram of the pawl structure of the present invention;

[0073] Figure 7 It is a partial three-dimensional structural schematic diagram of the atomization trigger assembly of the present invention;

[0074] Figure 8 Schematic diagram of the three-dimensional structure of the upper cover of the present invention Figure 1 ;

[0075] Fig. 9 Schematic diagram of the three-dimensional structure of the upper cover of the present invention Figure 2 ;

[0076] Fig.10 The structural exploded diagram of the counting mechanism of the present invention is Figure 1 ;

[0077] Fig.11 The structural exploded diagram of the counting mechanism of the present invention is Figure 2 ;

[0078] Fig.12 It is a structural cross-sectional view of the counting mechanism of the present invention;

[0079] Fig.13 It is a structural cross-sectional view of the quantitative atomization device of the present invention when it is in an initial state;

[0080] Fig.14 for Fig.13 Enlarged view of point B in the middle;

[0081] Fig.15 It is a structural cross-sectional view of the quantitative atomization device of the present invention when it is in a liquid-intake state;

[0082] Fig.16 for Fig.15 Enlarged view of point C in the middle;

[0083] Fig.17 It is a structural cross-sectional view of the quantitative atomization device of the present invention when it is in an atomization state.

[0084] Description of Reference Numerals

[0085] 100. Quantitative atomization device;

[0086] 1. Suction nozzle;

[0087] 2. Bag valve assembly; 21. Valve core; 211. Concave cavity; 212. Third through hole; 22. Tank body; 23. Bag body; 24. Valve body; 241. First through hole; 25. Measuring bin; 251. Second through hole; 252. First baffle; 2521. Fourth through hole; 253. Second baffle; 2531. Fifth through hole; 254. First chamber; 255. Second chamber; 256. Third chamber; 257. Dosing plate; 258. Elastic member; 259. Air pressure balance channel; 26. Atomization chip; 27. Valve seat;

[0088] 3. Counting mechanism; 31. Ratchet; 32. Counting disk; 321. Units disk; 322. Tens disk; 3221. Third limiting structure; 33. Single-tooth cam; 34. First gear; 35. Mounting shaft; 36. Connecting piece; 37. Units transmission gear; 38. Tens transmission gear; 39. Second connecting shaft;

[0089] 4. trigger mechanism; 41. trigger assembly; 411. ratchet structure; 4111. first ratchet; 4112. first connecting shaft; 4113. lever; 412. trigger member; 4121. second ratchet; 4122. limiting elastic member; 4123. first limiting column; 4124. second limiting column; 413. first wheel body; 4131. first limiting structure; 4132. third limiting column; 414. second wheel body; 4141. limiting hole; 4142. fixed shaft; 42. first resetting elastic member; 43. trigger ratchet; 431. mounting hole;

[0090] 5. Atomization trigger assembly; 51. Button member; 52. Limiting member; 521. Second limiting structure; 522. First protrusion; 5221. Guide slope; 523. Second protrusion; 524. Third protrusion; 53. Second reset elastic member; 54. Third connecting shaft;

[0091] 6. Upper cover; 61. Fourth protrusion; 62. Limiting protrusion; 63. First window; 64. Second window; 65. Fourth limiting structure; 66. Button compartment. DETAILED DESCRIPTION

[0092] In order to make the technical solutions and beneficial effects of the present invention more clearly understood, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0093] In the description of the present invention, unless otherwise explicitly defined, terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0094] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two; "several" means at least one, unless otherwise clearly defined.

[0095] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0097] The "upper" and "lower" mentioned in the present invention are Figure 1 The markings in shall prevail.

[0098] According to the following Figures 1 to 17 The quantitative atomization device of the present invention is described in detail.

[0099] In this embodiment, if Figure 1 As shown, the quantitative atomization device 100 includes a mouthpiece 1, a bag valve assembly 2, a counting mechanism 3, a trigger mechanism 4 and an atomization trigger assembly 5. The user inhales the atomized particles through the mouthpiece 1. The bag valve assembly 2 is used to store liquid and quantitatively spray atomized particles. The bag valve assembly 2 includes a valve core 21. The counting mechanism 3 is used to count the number of atomization times of the bag valve assembly 2. Figure 2 and Figure 3 As shown, the trigger mechanism 4 includes a trigger assembly 41 and a first resetting elastic member 42 , and the atomization trigger assembly 5 includes a button member 51 and a limit member 52 which are connected.

[0100] When the external force rotates the suction nozzle 1, the valve core 21 and the trigger assembly 41 can rotate synchronously, so that Fig.13 and Fig.15As shown, the valve core 21 can rotate to the liquid inlet position, thereby triggering the liquid inlet, and the trigger component 41 triggers the count by rotating. During the rotation of the trigger component 41, the first reset elastic member 42 is compressed, and the trigger component 41 rotates to the limit position at the limit member 52 and cannot continue to rotate. By limiting the stop position of the trigger component 41 to limit the stop position of the suction nozzle 1 and the valve core 21, the valve core 21 can be stopped at the liquid inlet position.

[0101] After the liquid is filled, when the button 51 is pressed by an external force, the button 51 drives the limiter 52 to move. Under the rebound force of the first reset elastic member 42, the trigger assembly 41 can be separated from the limiter 52. In this way, the trigger assembly 41 drives the valve core 21 to reset. Fig.17 As shown, atomization is triggered by resetting the valve core 21, and the bag valve assembly 2 sprays atomized particles quantitatively.

[0102] By adopting the above technical solution, with the cooperation of the trigger mechanism 4, the liquid inlet and counting can be triggered by rotating the suction nozzle 1, and the operation is simple. In addition, the stop position of the trigger component 41 is further limited by the limiter 52 of the atomization trigger component 5, and the stop position of the valve core 21 can be limited. Moreover, the atomization can only be triggered by pressing the button component 51, so as to ensure that the two steps of triggering liquid inlet and triggering atomization are performed separately, and avoid the quantitative atomization device 100 being in a state of simultaneous liquid inlet and spraying due to improper operation, which leads to inaccurate dosage, and can ensure accurate measurement, and has a counting function to remind the user of the remaining liquid, so as to replace the quantitative atomization device 100 or replenish the liquid in time.

[0103] In one embodiment, if Figure 2 and Fig.13 As shown, the trigger mechanism 4 includes a trigger ratchet 43, which is coaxially connected to the suction nozzle 1, and the valve core 21 is coaxially connected to the trigger assembly 41. The trigger ratchet 43 and the trigger assembly 41 are matched through ratchets and pawls. In this way, when the liquid is triggered, the trigger ratchet 43 is driven to rotate through the suction nozzle 1, and the trigger ratchet 43 drives the trigger assembly 41 to rotate through the matching relationship between the ratchet and the pawl, and drives the valve core 21 to rotate to the liquid inlet position through the trigger assembly 41. When atomization is triggered, the valve core 21 is reset by the trigger assembly 41. In this way, the trigger mechanism 4 has the functions of triggering liquid inlet and triggering counting at the same time. In addition, since the trigger ratchet 43 will not reset, the suction nozzle 1 will not reverse, so as to prevent the suction nozzle 1 from reversing and affecting the user's inhalation of atomized particles.

[0104] Furthermore, if Figure 2 As shown, the trigger ratchet 43 is provided with a mounting hole 431, and the suction nozzle 1 is provided with a cylinder (not shown in the figure), and a fixed connection is achieved by inserting the cylinder into the mounting hole 431.

[0105] In one embodiment, if Figures 2 to 6 , Fig.13 and Fig.14 As shown, the trigger assembly 41 includes a ratchet structure 411, a trigger member 412, and a first wheel body 413 and a second wheel body 414 connected coaxially. The first wheel body 413 and the second wheel body 414 are connected to form an integral structure through a central axis, and the valve core 21 passes through the first wheel body 413 and the second wheel body 414 and is fixed. The ratchet structure 411 is fixedly connected or rotatably connected to the first wheel body 413, and the trigger member 412 is connected to the second wheel body 414. The ratchet structure 411 can mesh with the trigger ratchet 43, as shown in FIG. Figure 3 As shown, when the pawl structure 411 and the trigger ratchet 43 are in meshing state, the clockwise rotation of the trigger ratchet 43 can drive the pawl structure 411 to move around the central axis of the trigger ratchet 43. Since the pawl structure 411 is assembled on the first wheel body 413, the pawl structure 411 can drive the first wheel body 413 to drive the second wheel body 414 to rotate. At this time, the second wheel body 414 drives the trigger member 412 to move around the central axis of the second wheel body 414, and the trigger member 412 rotates to trigger counting. When the first reset elastic member 42 rebounds to make the trigger assembly 41 rotate counterclockwise to reset, the trigger ratchet 43 is not reset.

[0106] Furthermore, if Figure 3 As shown, the trigger ratchet 43 is an inner ratchet, and the first pawl 4111 and the first wheel body 413 of the pawl structure 411 are both located inside the trigger ratchet 43, which is conducive to the compact structure of the trigger mechanism 4. Of course, the setting position of the first wheel body 413 is not limited to this, and the structure of the trigger ratchet 43 is not limited to the structure of the inner ratchet. For example, the trigger ratchet 43 can also be an outer ratchet, the first pawl 4111 is located on the radial outer side of the trigger ratchet 43, and the first wheel body 413 is located on the axial outer side of the trigger ratchet 43.

[0107] In one embodiment, if Figure 4 and Figure 7 As shown, the first wheel body 413 is provided with a first limiting structure 4131, and the limiting member 52 is provided with a second limiting structure 521. The first limiting structure 4131 cooperates with the second limiting structure 521 to limit the stop position of the first wheel body 413. In this way, since the first wheel body 413 stops rotating, the stop position of the trigger assembly 41 can be limited and the valve core 21 can be stopped at the liquid inlet position. Of course, the first limiting structure can also be set on the second wheel body 414, and the second limiting structure is set on a surface of the limiting member 52 facing the second wheel body 414.

[0108] Furthermore, if Figure 7 As shown, the limiting member 52 is provided with a first protrusion 522 and a second protrusion 523, and a second limiting structure 521 in the shape of a slot is formed therebetween. Figure 4 As shown, the first limiting structure 4131 is a raised structure. When the valve core 21 rotates to the liquid inlet position, the trigger assembly 41 also rotates synchronously to the trigger position. The first limiting structure 4131 is circumferentially inserted into the second limiting structure 521 to achieve limiting. The first wheel body 413 cannot continue to rotate clockwise, nor can it be reset under the rebound of the first reset elastic member 42. The limiting structure is simple and easy to operate.

[0109] Furthermore, if Figure 7 As shown, the first protrusion 522 is provided with a guiding inclined surface 5221 to guide the first limiting structure 4131 to be circumferentially inserted into the second limiting structure 521, which is conducive to rapid limiting.

[0110] Furthermore, if Figure 7 As shown, the first protrusion 522 and the second protrusion 523 both extend along the length direction of the formed slot, and the length of the second protrusion 523 is smaller than the length of the first protrusion 522, which facilitates the engagement or disengagement of the first limiting structure 4131 while facilitating the stable positioning of the first limiting structure 4131.

[0111] In one embodiment, if Figure 4 and Figure 5 As shown, the first resetting elastic member 42 is a plane spring, which is coaxially connected to the second wheel body 414, and the outer end of the first resetting elastic member 42 is connected to the second wheel body 414 through a fixed shaft 4142. Figure 2 As shown, when the liquid is fed, the external force rotates the nozzle 1, the trigger assembly 41 rotates clockwise, and the first resetting elastic member 42 is compressed toward the axis. When the button member 51 is pressed by external force after the liquid is fed, the first resetting elastic member 42 rebounds, so that the trigger assembly 41 rotates counterclockwise and resets. Of course, the first resetting elastic member 42 can also be coaxially connected to the first wheel body 413.

[0112] In one embodiment, if Figures 2 to 4 As shown, the pawl structure 411 is rotatably connected to the first wheel body 413, and the pawl structure 411 can rotate around the rotation connection between the pawl structure 411 and the first wheel body 413 under the driving of external force, so as to engage with or separate from the trigger ratchet 43. Specifically, when the quantitative atomization device 100 is in the initial state, the pawl structure 411 is engaged with the trigger ratchet 43, so that when the trigger ratchet 43 rotates with the suction nozzle 1, the trigger ratchet 43 can drive the pawl structure 411 to drive the first wheel body 413 and the second wheel body 414 to rotate; when the trigger assembly 41 rotates to the trigger position (the position for triggering liquid inlet), the pawl structure 411 rotates under the driving of external force to disengage from the trigger ratchet 43, thereby reducing or avoiding the friction resistance caused by the trigger ratchet 43 to the trigger assembly 41 when the trigger assembly 41 is reset, which is conducive to the trigger assembly 41 driving the valve core 21 to reset instantly.

[0113] Furthermore, if Figures 2 to 8 As shown, the pawl structure 411 includes a first pawl 4111, a first connecting shaft 4112 and a lever 4113 connected in sequence, and the first connecting shaft 4112 is rotatably connected to the first wheel body 413; the limiting member 52 is provided with a third protrusion 524, and the housing of the quantitative atomization device 100 is provided with a fourth protrusion 61. When the quantitative atomization device 100 is in the initial state, the first pawl 4111 is engaged with the trigger ratchet 43. When the trigger assembly 41 rotates to the trigger position, the third protrusion 524 shifts the lever 4113 so that the first pawl 4111 leaves the trigger ratchet 43. When the trigger assembly 41 is reset to the initial position, the fourth protrusion 61 shifts the first pawl 4111 so that the first pawl 4111 is engaged with the trigger ratchet 43.

[0114] Furthermore, if Figure 3 As shown, the first wheel body 413 is provided with a third limiting column 4132, and the first pawl 4111 is located between the inner wall of the trigger ratchet 43 and the third limiting column 4132. The third limiting column 4132 is used to limit the distance of the first pawl 4111 away from the trigger ratchet 43 when the third protrusion 524 drives the lever 4113, which is beneficial for the fourth protrusion 61 to push back the first pawl 4111 during the subsequent resetting process.

[0115] In one embodiment, if Figure 1 and Fig.13 As shown, the housing includes an upper cover 6, which together with the nozzle 1 forms a cavity; the counting mechanism 3, the trigger mechanism 4 and the limiter 52 are all located in the cavity, and the button 51 is movably plugged into the upper cover 6 to facilitate assembly of the counting mechanism 3, the trigger mechanism 4 and the atomization trigger assembly 5. The fourth protrusion 61 is provided on the inner wall of the upper cover 6 for easy processing.

[0116] In one embodiment, if Figure 8 As shown, the upper cover 6 is provided with a limiting protrusion 62, as shown in FIG. Figure 4 and Figure 5 As shown, the second wheel body 414 is provided with an arc-shaped limiting hole 4141, and the limiting protrusion 62 is movably inserted into the limiting hole 4141. The limiting hole 4141 limits the movement trajectory of the limiting protrusion 62, thereby limiting the rotation angle of the second wheel body 414, so as to accurately control the counting, liquid feeding and atomization metering. Further, the limiting hole 4141 limits the rotation angle of the limiting protrusion 62 to 180°.

[0117] In one embodiment, if Figure 2 , Figure 3 and Fig.10As shown, the trigger member 412 includes a second pawl 4121, and the counting mechanism 3 includes a coaxially connected ratchet 31 and a counting disk 32. When the second wheel body 414 drives the second pawl 4121 to move around the central axis of the second wheel body 414, after the second pawl 4121 moves to engage with the ratchet 31, the second pawl 4121 drives the ratchet 31 to drive the counting disk 32 to rotate to achieve counting.

[0118] Furthermore, if Figure 2 and Figure 3 As shown, the trigger member 412 further includes a limiting elastic member 4122 , a first limiting column 4123 and a second limiting column 4124 , and the second pawl 4121 and the limiting elastic member 4122 are rotatably connected to the second wheel body 414 .

[0119] When the trigger assembly 41 rotates clockwise to the trigger position, the second pawl 4121 is subjected to the reaction force applied by the ratchet 31 and rotates toward the first limiting column 4123 . At this time, the second pawl 4121 can be stably engaged with the ratchet 31 under the limitation of the first limiting column 4123 .

[0120] When the trigger assembly 41 rotates counterclockwise to reset, the second pawl 4121 can easily jump along the tooth surface of the ratchet 31 and disengage from the ratchet 31 under the elastic cooperation of the limiting elastic member 4122. In this way, the second pawl 4121 is set to be rotatable within a certain angle range, which can reduce the friction between the second pawl 4121 and the ratchet 31 during the counterclockwise rotation process, which is conducive to the rapid reset of the trigger assembly 41. In this process, the second limiting column 4124 is used to limit the limiting elastic member 4122 so that the limiting elastic member 4122 can be within the preset position range, so that the limiting elastic member 4122 can limit the rotation angle of the second pawl 4121 in the direction toward the limiting elastic member 4122.

[0121] Of course, the connection method between the second pawl 4121 and the second wheel body 414 is not limited to this. The second pawl 4121 can also be fixedly connected to the second wheel body 414 (not shown in the figure), that is, during the rotation of the second wheel body 414, the second pawl 4121 does not rotate.

[0122] In one embodiment, if Figures 10 to 12As shown, the counting disk 32 includes a ones disk 321 and a tens disk 322, and the ratchet 31 is coaxially connected to the ones disk 321. The ratchet 31 can be a separate component or can be integrally formed with the ones disk 321. When the ones disk 321 rotates ten times, the tens disk 322 rotates once to increase the counting capacity of the counting mechanism 3, and the counting capacity of the counting mechanism 3 can be as high as 99 times. The peripheral walls of the ones disk 321 and the tens disk 322 are respectively provided with ten numbers 0-9 distributed at equal intervals. The counting disk 32 is located in the cavity formed by the upper cover 6 and the suction nozzle 1. The upper cover 6 is provided with a first window 63 and a second window 64. The first window 63 is used to display the counting result of the ones disk 321, and the second window 64 is used to display the counting result of the tens disk 322, wherein the digital display of the first window 63 and / or the second window 64 can be gradually reduced from 9 to 0, or can be gradually increased from 0 to 9. Taking the example of counting the numbers of the ones disk 321 and the tens disk 322 increasing from 0 to 9 in sequence, when the number of the ones disk 321 displayed in the first window 63 changes from 0 to 9, the number of the tens disk 322 displayed in the second window 64 changes from 0 to 1.

[0123] Furthermore, if Fig.10 As shown, the ratchet wheel 31 has ten ratchet teeth. Each time the ratchet wheel 31 rotates one tooth pitch, the units disk 321 rotates 36°, and the numbers on the peripheral wall of the units disk 321 increase by 1 (positive counting) or decrease by 1 (reverse counting).

[0124] In one embodiment, if Figures 10 to 12 As shown, the counting mechanism 3 includes a single-tooth cam 33 and a first gear 34. The single-tooth cam 33 is coaxially connected to the ones disk 321. The single-tooth cam 33 can be a separate component or can be integrally formed with the ones disk 321. The first gear 34 is coaxially connected to the tens disk 322. The first gear 34 can be a separate component or can be integrally formed with the tens disk 322. When the single-tooth cam 33 rotates with the ones disk 321 for the tenth time, the single-tooth cam 33 drives the first gear 34 to mesh and drive the tens disk 322 to rotate once.

[0125] Furthermore, if Fig.10 As shown, the first gear 34 has ten gear teeth. Every time the first gear 34 rotates one pitch, the tens disk 322 rotates 36°, and the numbers on the peripheral wall of the tens disk 322 increase by 1 (positive counting) or decrease by 1 (reverse counting).

[0126] Furthermore, if Figures 10 to 12As shown, the counting mechanism 3 includes a mounting shaft 35, a connecting member 36, a units transmission gear 37, a tens transmission gear 38 and a second connecting shaft 39, and the tens transmission gear 38 is meshed with the first gear 34; the units transmission gear 37 and the tens transmission gear 38 are coaxially connected through the second connecting shaft 39, and there is no relative rotation between the units transmission gear 37 and the tens transmission gear 38, and the units transmission gear 37, the tens transmission gear 38 and the first gear 34 have the same number of teeth. One end of the connecting member 36 is fixed to the mounting shaft 35, and the other end is fixed to the second connecting shaft 39, and the mounting shaft 35 is fixed to the housing of the quantitative atomization device 100. When the single-tooth cam 33 rotates to the tenth time, the single-tooth cam 33 is meshed with the units transmission gear 37, so that the single-tooth cam 33 can drive the units transmission gear 37 to rotate together with the tens transmission gear 38, and the tens transmission gear 38 drives the first gear 34 to drive the tens disk 322 to rotate.

[0127] Furthermore, if Fig.12 As shown, the ones disk 321 and the tens disk 322 jointly form a cavity, the single-tooth cam 33, the first gear 34, the connecting piece 36, the ones transmission gear 37, the tens transmission gear 38 and the second connecting shaft 39 are all located in the cavity, the mounting shaft 35 passes through the ones disk 321 and the tens disk 322, the ones disk 321 and the tens disk 322 are respectively rotatably connected to the mounting shaft 35, and one end of the mounting shaft 35 is fixed to the upper cover 6.

[0128] Furthermore, if Fig.12 As shown, the diameters of the ones disk 321 and the tens disk 322 are equal to save space. Of course, the diameters of the ones disk 321 and the tens disk 322 may also be unequal.

[0129] In one embodiment, if Fig.11 As shown, the tens disk 322 is provided with a third limiting structure 3221, such as Fig. 9 As shown, the upper cover 6 is provided with a fourth limiting structure 65. When the counting times of the counting mechanism 3 reaches a preset value, the fourth limiting structure 65 cooperates with the third limiting structure 3221 to limit the tens disk 322 from continuing to rotate, so as to lock the counting mechanism 3.

[0130] Furthermore, if Fig. 9 and Fig.11 As shown, the third limiting structure 3221 and the fourth limiting structure 65 are both convex structures. When the counting times of the counting mechanism 3 reaches a preset value, the fourth limiting structure 65 circumferentially abuts against the third limiting structure 3221, thereby limiting the tens disk 322 from continuing to rotate.

[0131] In a specific embodiment, Figure 1 and Fig.13As shown, the counting mechanism 3 and the atomization trigger assembly 5 are respectively located on both radial sides of the valve core 21, and both are partially inserted between the first wheel body 413 and the second wheel body 414, which is conducive to the miniaturization design of the quantitative atomization device 100. Figure 3 and Figure 4 As shown, the first wheel body 413 is located above the second wheel body 414, the first pawl 4111 is attached to the top of the first wheel body 413, and the lever 4113 is attached to the top of the first wheel body 413, as shown in FIG. Figure 3 and Figure 8 As shown, the second limiting structure 521, the first protrusion 522, the second protrusion 523 and the third protrusion 524 are located between the first wheel body 413 and the second wheel body 414. Figure 4 As shown, the first limiting structure 4131 is disposed on the lower surface of the first wheel body 413. Figure 3 As shown, the trigger member 412 is disposed on the upper surface of the second wheel body 414. Fig.12 and Fig.13 As shown, the tens disk 322 and the ones disk 321 are arranged in sequence from top to bottom, and the ratchet 31 is arranged on the lower surface of the ones disk 321 and is located above the second wheel body 414 .

[0132] It should be understood that the counting times of the counting mechanism 3 is not limited to two digits, and more digits can be counted by adding gears.

[0133] In one embodiment, if Figure 3 As shown, the atomization trigger assembly 5 includes a second resetting elastic member 53, and the second resetting elastic member 53 is used to reset the button member 51. Specifically, as Figure 3 and Figure 7 As shown, the atomization trigger assembly 5 includes a third connecting shaft 54, and the second reset elastic member 53 is a spring and is sleeved on the third connecting shaft 54. Figure 8 and Fig.13 As shown, the upper cover 6 is provided with a button compartment 66, the third connecting shaft 54 ​​is inserted into the compartment wall of the button compartment 66, one end of the third connecting shaft 54 ​​is inserted into the cavity formed by the upper cover 6 and the suction nozzle 1 and connected to the limiter 52, and the other end is located in the button compartment 66, and the second reset elastic member 53 is located in the button compartment 66. When an external force presses the button member 51, the second reset elastic member 53 is compressed, and when the external force is removed, the second reset elastic member 53 rebounds to reset the atomization trigger assembly 5. In addition, when the liquid is triggered, the trigger assembly 41 rotates to the trigger position, as shown in FIG. Figure 4 and Figure 7 As shown, when the first limiting structure 4131 on the first wheel body 413 is engaged with the second limiting structure 521 on the limiting member 52, the second reset elastic member 53 is compressed by the limiting member 52, and the limiting member 52 can move along the axial direction away from the first wheel body 413, so that the first limiting structure 4131 can be smoothly and quickly engaged with the second limiting structure 521.

[0134] In one embodiment, if Figure 1 , Fig.13 and Fig.14 As shown, the bag valve assembly 2 further includes a tank body 22, a bag body 23, a valve body 24 and a metering chamber 25. The tank body 22 is used to contain compressed gas, the bag body 23 is located in the tank body 22 and is used to contain liquid, one end of the valve body 24 is inserted into the bag body 23, the metering chamber 25 is connected to the valve body 24 and the two are in communication, and one end of the valve core 21 is inserted into the valve body 24. Fig.13 and Fig.14 As shown, when the quantitative atomization device 100 is in the initial state, the outer wall of the valve core 21 closes the connection between the bag body 23 and the valve body 24, so that the liquid in the bag body 23 cannot enter the valve body 24, and further cannot enter the metering chamber 25. Fig.15 and Fig.16 As shown, when the valve core 21 rotates to the liquid inlet position, the bag body 23, the valve core 21 and the metering chamber 25 are connected in sequence, so that the liquid in the bag body 23 enters the metering chamber 25 through the valve body 24 under the pressure of the compressed gas. Fig.17 As shown, when the valve core 21 is reset to trigger atomization, the valve core 21 is in the initial position, the metering chamber 25 is connected to the valve core 21, and the liquid in the metering chamber 25 enters the valve core 21 and is atomized and sprayed out. In addition, the outer wall of the valve core 21 closes the connection between the bag body 23 and the valve body 24 to ensure that the liquid in the bag body 23 will not enter the metering chamber 25 during the atomization process.

[0135] Furthermore, if Fig.14 As shown, the end of the valve body 24 inserted into the bag body 23 is provided with a first through hole 241 extending axially, the metering chamber 25 is provided with a second through hole 251, the second through hole 251 is connected to the chamber of the valve body 24, and the end of the valve core 21 inserted into the valve body 24 is provided with a concave cavity 211 and a third through hole 212.

[0136] like Fig.14 As shown, when the metered-quantity atomization device 100 is in the initial state, the outer wall of the valve core 21 closes the first through hole 241 .

[0137] like Fig.16 As shown, when the valve core 21 rotates to the liquid inlet position, the second through hole 251, the concave cavity 211 and the first through hole 241 are connected in sequence to form a liquid inlet channel, and the liquid in the bag body 23 enters the concave cavity 211 through the first through hole 241, and then enters the metering bin 25 through the second through hole 251. At this time, the inner wall of the third through hole 212 of the valve body 24 is closed.

[0138] like Fig.14 and Fig.17As shown, when the valve core 21 is reset (restored to the initial position) to trigger atomization, the second through hole 251 and the third through hole 212 are connected to form a liquid outlet channel, and the liquid in the metering chamber 25 passes through the second through hole 251 and the third through hole 212 in turn and enters the chamber of the valve core 21 to be sprayed out in the form of atomization.

[0139] Furthermore, if Fig.14 As shown, the metering bin 25 includes a first partition plate 252, a second partition plate 253, a quantitative plate 257, an elastic member 258 and an air pressure balance channel 259, wherein the first partition plate 252 is provided with a fourth through hole 2521, and the second partition plate 253 is provided with a fifth through hole 2531. The first partition plate 252 and the second partition plate 253 are sequentially distributed along the direction toward the connection point between the metering bin 25 and the valve body 24, and separate the metering bin 25 to form a first chamber 254, a second chamber 255 and a third chamber 256. The quantitative plate 257 is movably located in the second chamber 255, and the peripheral side wall of the quantitative plate 257 abuts against the inner wall of the second chamber 255. The elastic member 258 is a spring, one end of which is connected to the cavity wall of the first chamber 254, and the other end is connected to the quantitative plate 257. The air pressure balance channel 259 is connected to the first chamber 254 and the outside respectively. The air pressure balance channel 259 is used to balance the internal and external air pressure of the space on the side of the quantitative plate 257 facing the elastic member 258 during the liquid intake and atomization process, so that the quantitative plate 257 can move back and forth smoothly.

[0140] like Fig.14 As shown, when the quantitative atomization device 100 is in the initial state, the elastic member 258 passes through the fourth through hole 2521 and presses the quantitative plate 257 against the second partition plate 253 , and the quantitative plate 257 closes the fifth through hole 2531 of the second partition plate 253 .

[0141] like Fig.16 As shown, when the quantitative atomization device 100 is in a liquid filling state, the liquid in the bag body 23 flows into the metering chamber 25 through the liquid inlet channel under the squeeze of the compressed gas in the tank body 22, and the liquid pushes the quantitative plate 257 to move toward the first partition 252 and the elastic member 258 is compressed until the quantitative plate 257 abuts against the first partition 252, completing the liquid filling. During this process, the air in the space on the side of the quantitative plate 257 toward the elastic member 258 is discharged to the outside through the air pressure balance channel 259.

[0142] like Fig.14 and Fig.17As described above, when the quantitative atomization device 100 is in the atomization state, the elastic member 258 rebounds and pushes the quantitative plate 257 to move toward the second partition 253, squeezing the liquid in the metering chamber 25 into the valve core 21 until the quantitative plate 257 abuts against the second partition 253 to complete the atomization. During this process, the outside air enters the space on the side of the quantitative plate 257 facing the elastic member 258 through the air pressure balance channel 259. The volume of the space of the second chamber 255 between the first partition 252 and the second partition 253 corresponds to the liquid inlet amount and the atomization amount. The space size of the second chamber 255 is adjusted to match different drug delivery requirements.

[0143] Furthermore, a filter element (not shown in the figure) is provided at the connection point between the air pressure balance channel 259 and the atmosphere to filter the air from the outside entering the air pressure balance channel 259 to prevent impurities from entering the metering bin 25 and affecting the movement of the quantitative plate 257.

[0144] It should be understood that the pressure in the tank body 22 is greater than the pressure required for the quantitative plate 257 to move from the second partition 253 to the first partition 252, so as to facilitate the smooth liquid inlet.

[0145] It should be understood that before using the quantitative atomization device 100, it is necessary to repeat the liquid filling and atomization several times to exhaust the air in the valve core 21 and the metering chamber 25. This operation can be completed before leaving the factory or guided by the user after leaving the factory.

[0146] It should be understood that after the liquid is filled, the second chamber 255 and the third chamber 256 are filled with liquid, and the volume of the liquid sprayed during atomization is equal to the volume of the liquid in the second chamber 255. Therefore, after the atomization is completed, the liquid in the third chamber 256 at least partially remains in the valve core 21. After multiple liquid fillings and atomizations, when the quantitative atomization device 100 is in the initial state, the liquid level in the valve core 21 is equal to the liquid level in the third chamber 256, and the residual liquid in the valve core 21 maintains a stable liquid level.

[0147] In the above technical solution, the overall structure of the metering chamber 25 is simple, and it cooperates with the quantitative plate 257 through the elastic member 258 to achieve instantaneous liquid inlet and instantaneous atomization.

[0148] In one embodiment, if Figure 2 and Fig.13 As shown, the bag valve assembly 2 includes an atomization chip 26, which is sealed and connected to the outlet of the valve core 21 to convert the liquid sprayed by the valve core 21 into atomized particles.

[0149] In one embodiment, if Figure 1 and Fig.17 As shown, the bag valve assembly 2 includes a valve seat 27 , the opening ends of the bag body 23 and the tank body 22 are respectively sealed and connected to the valve seat 27 , and one end of the valve body 24 facing the suction nozzle 1 is connected to the valve seat 27 .

[0150] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A quantitative atomization device, characterized in that: The quantitative atomization device (100) comprises: Suction nozzle (1); A bag valve assembly (2) for storing liquid and quantitatively spraying atomized particles and comprising a valve core (21); A counting mechanism (3) for counting the number of atomization times of the bag valve assembly (2); A trigger mechanism (4), comprising a trigger assembly (41) and a first resetting elastic member (42); An atomization trigger assembly (5), comprising a button member (51) and a limit member (52) connected to each other; When the suction nozzle (1) is rotated by an external force, the valve core (21) and the trigger component (41) can rotate synchronously, the valve core (21) rotates to a liquid inlet position to trigger liquid inlet, the trigger component (41) rotates to trigger counting, and the trigger component (41) rotates to a limit position at the limit member (52) and stops, and the first resetting elastic member (42) is compressed; When an external force presses the button member (51), the limiting member (52) moves, and under the rebound force of the first reset elastic member (42), the trigger component (41) separates from the limiting member (52) and drives the valve core (21) to reset, thereby triggering atomization.

2. The quantitative atomization device according to claim 1, characterized in that: The trigger mechanism (4) comprises a trigger ratchet (43) which is coaxially connected to the suction nozzle (1), and the valve core (21) is coaxially connected to the trigger assembly (41); the trigger ratchet (43) and the trigger assembly (41) are matched via ratchets and pawls, and the suction nozzle (1) drives the trigger assembly (41) via the trigger ratchet (43) to drive the valve core (21) to rotate synchronously.

3. The quantitative atomization device according to claim 2, characterized in that: The trigger assembly (41) comprises a ratchet structure (411), a trigger member (412), and a first wheel body (413) and a second wheel body (414) that are coaxially connected; the ratchet structure (411) is fixedly connected or rotatably connected to the first wheel body (413); and the ratchet structure (411) is capable of meshing with the trigger ratchet wheel (43); The trigger member (412) is connected to the second wheel body (414). When the trigger ratchet (43) drives the first wheel body (413) to drive the second wheel body (414) to rotate through the pawl structure (411), the trigger member (412) moves around the central axis of the second wheel body (414) to trigger the counting.

4. The quantitative atomization device according to claim 3, characterized in that: The trigger ratchet (43) is an inner ratchet, and the first wheel body (413) is located inside the trigger ratchet (43).

5. The quantitative atomization device according to claim 3, characterized in that: The first wheel body (413) and / or the second wheel body (414) is provided with a first limiting structure (4131), and the limiting member (52) is provided with a second limiting structure (521), and the first limiting structure (4131) cooperates with the second limiting structure (521) to limit the stop position of the trigger assembly (41).

6. The quantitative atomization device according to claim 5, characterized in that: The limiting member (52) is provided with a first protrusion (522) and a second protrusion (523), and a second limiting structure (521) in the shape of a slot is formed therebetween; the first limiting structure (4131) is a protrusion structure, and the first limiting structure (4131) is circumferentially inserted into the second limiting structure (521) to achieve limiting.

7. The quantitative atomization device according to claim 6, characterized in that: The first protrusion (522) is provided with a guiding inclined surface (5221) to guide the first limiting structure (4131) to be circumferentially inserted into the second limiting structure (521).

8. The quantitative atomization device according to claim 3, characterized in that: The first resetting elastic member (42) is a planar spring, which is coaxially connected to the first wheel body (413) or the second wheel body (414); When an external force rotates the suction nozzle (1), the first resetting elastic member (42) is compressed toward the axis; When an external force presses the button member (51), the first resetting elastic member (42) rebounds.

9. The quantitative atomization device according to any one of claims 3 to 8, characterized in that: The pawl structure (411) is rotatably connected to the first wheel body (413), and the pawl structure (411) can rotate under the drive of an external force to engage with or separate from the trigger ratchet (43).

10. The quantitative atomization device according to claim 9, characterized in that: The pawl structure (411) comprises a first pawl (4111), a first connecting shaft (4112) and a lever (4113) which are connected in sequence, and the first connecting shaft (4112) is rotatably connected to the first wheel body (413); the limiting member (52) is provided with a third protrusion (524), and the housing of the quantitative atomization device (100) is provided with a fourth protrusion (61); When the quantitative atomization device (100) is in an initial state, the first ratchet pawl (4111) is engaged with the trigger ratchet wheel (43); When the trigger assembly (41) rotates to the trigger position, the third protrusion (524) shifts the shifting rod (4113) so that the first pawl (4111) leaves the trigger ratchet (43); When the trigger assembly (41) is reset to the initial position, the fourth protrusion (61) moves the first pawl (4111) so that the first pawl (4111) engages with the trigger ratchet (43).

11. The quantitative atomization device according to claim 10, characterized in that: The housing comprises an upper cover (6), which together with the suction nozzle (1) forms a cavity; the counting mechanism (3), the trigger mechanism (4) and the limit member (52) are all located in the cavity; the button member (51) is movably plugged into the upper cover (6); and the fourth protrusion (61) is provided on the inner wall of the upper cover (6).

12. The quantitative atomization device according to any one of claims 3 to 8, characterized in that: The quantitative atomization device (100) comprises an upper cover (6), which together with the suction nozzle (1) forms a cavity, and the trigger mechanism (4) is located in the cavity; the upper cover (6) is provided with a limiting protrusion (62), and the second wheel body (414) is provided with an arc-shaped limiting hole (4141), and the limiting protrusion (62) can be movably inserted into the limiting hole (4141) to limit the rotation angle of the second wheel body (414).

13. The quantitative atomization device according to any one of claims 3 to 8, characterized in that: The trigger member (412) comprises a second ratchet pawl (4121), and the counting mechanism (3) comprises a ratchet wheel (31) and a counting disk (32) which are coaxially connected; When the second wheel body (414) drives the second pawl (4121) to move, the second pawl (4121) engages with the ratchet wheel (31) and drives the ratchet wheel (31) to drive the counting disk (32) to rotate, thereby realizing counting.

14. The quantitative atomization device according to claim 13, characterized in that: The trigger member (412) further comprises a limiting elastic member (4122), a first limiting column (4123) and a second limiting column (4124); the second pawl (4121) and the limiting elastic member (4122) are respectively rotatably connected to the second wheel body (414); the second limiting column (4124) is used to limit the limiting elastic member (4122); When the trigger assembly (41) rotates to the trigger position, the second pawl (4121) engages with the ratchet wheel (31) under the limitation of the first limiting column (4123); When the trigger assembly (41) is reset, under the elastic cooperation of the limiting elastic member (4122), the second pawl (4121) jumps along the tooth surface of the ratchet (31) and disengages from the ratchet (31).

15. The quantitative atomization device according to claim 13, characterized in that: The counting disk (32) comprises a ones disk (321) and a tens disk (322), and the ratchet wheel (31) is coaxially connected to the ones disk (321); when the ones disk (321) rotates ten times, the tens disk (322) rotates once.

16. The quantitative atomization device according to claim 15, characterized in that: The counting mechanism (3) comprises a single-tooth cam (33) and a first gear (34); the single-tooth cam (33) is coaxially connected to the ones disk (321); and the first gear (34) is coaxially connected to the tens disk (322); When the single-tooth cam (33) rotates together with the ones disk (321) for the tenth time, it drives the first gear (34) to drive the tens disk (322) to rotate once.

17. The quantitative atomization device according to claim 16, characterized in that: The counting mechanism (3) comprises a mounting shaft (35), a connecting member (36), a units transmission gear (37), a tens transmission gear (38) and a second connecting shaft (39); the units transmission gear (37) and the tens transmission gear (38) are coaxially connected via the second connecting shaft (39); one end of the connecting member (36) is fixed to the mounting shaft (35) and the other end is fixed to the second connecting shaft (39); the mounting shaft (35) is fixed to the housing of the quantitative atomization device (100); The tens transmission gear (38) is meshed with the first gear (34); and when the single-tooth cam (33) rotates to the tenth time, it is meshed with the ones transmission gear (37).

18. The quantitative atomization device according to claim 15, characterized in that: The tens disk (322) is provided with a third limiting structure (3221), and the upper cover (6) of the quantitative atomization device (100) is provided with a fourth limiting structure (65); When the number of times counted by the counting mechanism (3) reaches a preset value, the fourth limiting structure (65) cooperates with the third limiting structure (3221) to limit the tens disk (322) from continuing to rotate.

19. The quantitative atomization device according to any one of claims 1 to 8, characterized in that: The atomization trigger assembly (5) comprises a second resetting elastic member (53) for resetting the button member (51).

20. The quantitative atomization device according to any one of claims 1 to 8, characterized in that: The bag valve assembly (2) further comprises: A tank (22) for containing compressed gas; A bag body (23) located in the tank body (13) and used for containing liquid; A valve body (24), one end of which is inserted into the bag body (23); A metering bin (25), which is connected to the valve body (24) and the two are in communication; Wherein, one end of the valve core (21) is inserted into the valve body (24); When the quantitative atomization device (100) is in an initial state, the outer wall of the valve core (21) closes the connection between the bag body (23) and the valve body (24); When the valve core (21) rotates to the liquid inlet position, the bag body (23) and the metering chamber (25) are connected through the valve core (21), and the liquid in the bag body (23) enters the metering chamber (25) under the pressure of the compressed gas; When the valve core (21) is reset to trigger atomization, the metering chamber (25) is connected to the valve core (21), and the liquid in the metering chamber (25) enters the valve core (21) and is sprayed out in the form of atomization.

21. The quantitative atomization device according to claim 20, characterized in that: The end of the valve body (24) inserted into the bag body (23) is provided with a first through hole (241) extending in the axial direction, the metering chamber (25) is provided with a second through hole (251), the second through hole (251) is communicated with the chamber of the valve body (24), and the end of the valve core (21) inserted into the valve body (24) is provided with a concave cavity (211) and a third through hole (212); When the quantitative atomization device (100) is in an initial state, the outer wall of the valve core (21) closes the first through hole (241); When the valve core (21) rotates to the liquid inlet position, the second through hole (251), the concave cavity (211) and the first through hole (241) are connected in sequence to form a liquid inlet channel; When the valve core (21) is reset to trigger atomization, the second through hole (251) and the third through hole (212) are connected to form a liquid outlet channel.

22. The quantitative atomization device according to claim 20, characterized in that: The metering bin (25) comprises: A first partition plate (252) having a fourth through hole (2521); a second partition (253) having a fifth through hole (2531); the first partition (252) and the second partition (253) are sequentially distributed along a direction toward a connection point between the metering bin (25) and the valve body (24), and separate the metering bin (25) to form a first chamber (254), a second chamber (255) and a third chamber (256); A quantitative plate (257) is movably located in the second chamber (255), and a peripheral side wall of the quantitative plate (257) abuts against an inner wall of the second chamber (255); an elastic member (258), one end of which is connected to the cavity wall of the first cavity (254), and the other end of which is connected to the quantitative plate (257); An air pressure balance channel (259) which is in communication with the first chamber (254) and the outside respectively; Wherein, when the quantitative atomization device (100) is in an initial state, the elastic member (258) passes through the fourth through hole (2521) and presses the quantitative plate (257) against the second partition plate (253).

Images