CN212557627U

CN212557627U - Sprayer with a spray tube

Info

Publication number: CN212557627U
Application number: CN202021171900.XU
Authority: CN
Inventors: 陈炎聪; 毛宇洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-19
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a sprayer, this sprayer includes: bottle, spraying subassembly and imbibition subassembly. The bottle is equipped with the stock solution chamber, and the spraying subassembly is equipped with inlet channel, and the imbibition subassembly is equipped with imbibition chamber, first passageway and second passageway, and first passageway intercommunication imbibition chamber and stock solution chamber, second passageway intercommunication imbibition chamber and inlet channel. The first channel is provided with a first opening communicated with the liquid storage cavity, a first ball body is arranged in the first channel, and the first ball body is movably arranged at the first opening to block the liquid storage cavity and the liquid suction cavity by blocking the first opening. The second channel is provided with a second opening communicated with the liquid suction cavity and is provided with a second ball body and a second elastic body; the second ball body is movably arranged at the second opening to block the liquid suction cavity and the liquid inlet channel by blocking the second opening. The utility model provides a sprayer has effectively solved the problem of the easy damage of first check valve and the second check valve of current sprayer.

Description

Sprayer with a spray tube

Technical Field

The utility model relates to a atomizer technical field especially relates to a sprayer.

Background

The sprayer can spray liquid from the bottle body of the sprayer in a steam-mist form, and the steam-mist liquid is more easily and uniformly attached to the surface of an object, so that the sprayer is quite widely applied.

Generally, a sprayer includes a bottle body having a body for holding a liquid, a liquid suction assembly, and a spray assembly. Be equipped with first check valve between imbibition subassembly and the body, be equipped with the second check valve between imbibition subassembly and the spraying subassembly, liquid gets into imbibition subassembly reentrant spraying subassembly in the body, discharges the atomizer from spraying subassembly at last. However, the first check valve and the second check valve are usually plastic sheets, which are reversibly connected between the liquid absorbing assembly and the bottle body and between the liquid absorbing assembly and the spraying assembly, and the plastic sheets are easily damaged under the repeated impact of liquid, thereby greatly affecting the service life of the sprayer.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a sprayer that solves the problem of the prior art that the first check valve and the second check valve are easily damaged.

The utility model provides a sprayer includes: bottle, spraying subassembly and imbibition subassembly. The bottle includes body and shower nozzle, and the shower nozzle is connected in the one end of body, and the body is equipped with the stock solution chamber that is used for storing liquid. The spraying assembly is arranged in the spray head and is provided with a liquid inlet channel, and liquid can enter the spraying assembly through the liquid inlet channel and is sprayed out of the spraying assembly. The imbibition subassembly is located in the shower nozzle, and the imbibition subassembly is equipped with imbibition chamber, first passageway and second passageway, and first passageway intercommunication imbibition chamber and stock solution chamber to make the liquid in the stock solution chamber can get into the imbibition intracavity through first passageway, second passageway intercommunication imbibition chamber and inlet channel, so that the liquid in the imbibition intracavity can get into inlet channel through the second passageway. A first one-way valve is arranged in the first channel and used for controlling the on-off between the liquid storage cavity and the liquid suction cavity, and a second one-way valve is arranged in the second channel and used for controlling the on-off between the liquid suction cavity and the liquid inlet channel. The first channel is provided with a first opening communicated with the liquid storage cavity, the first one-way valve comprises a first ball body, and the first ball body is movably arranged at the first opening to block the liquid storage cavity and the liquid suction cavity by blocking the first opening. The second channel is provided with a second opening communicated with the liquid suction cavity, and the second one-way valve comprises a second ball and a second elastic body; the second ball body is movably arranged at the second opening so as to block the liquid suction cavity and the liquid inlet channel by blocking the second opening; the second elastic body is abutted between the second ball body and the inner wall of the second channel so that the second ball body can block the second opening.

In an embodiment of the present invention, the liquid suction assembly includes a first pipe portion and a second pipe portion, the first pipe portion is hollow to form a first pipeline, the second pipe portion is hollow to form a second pipeline, the second pipe portion is detachably connected to a lower end of the first pipe portion, and the first pipeline is communicated with the second pipeline to form a first channel; the first opening is formed in the second duct. When the first ball body is installed, the first ball body is firstly installed in the first pipeline or the second pipeline, and then the second pipe part is connected with the first pipe part, so that the first ball body can be installed in the first channel. So, the installation of first spheroid is very simple and convenient, is favorable to the rapid Assembly of atomizer, improves the production efficiency of atomizer.

In an embodiment of the present invention, the liquid absorbing assembly further includes a third pipe portion and a limiting portion, the third pipe portion is hollow to form a second channel, one end of the third pipe portion is provided with a second mounting port communicated with the second channel, and the second ball and the second elastic body are mounted in the second channel through the second mounting port; the limiting part is arranged at the second mounting opening to limit the second elastic body in the second channel. So, the installation of second spheroid and second elastomer is very simple and convenient, is favorable to the rapid Assembly of atomizer, improves the production efficiency of atomizer. Spacing portion can provide the holding power for the second elastomer, and the second spring receives the spheroidal pressure of second when acting on, can turn into elastic potential energy with the spheroidal kinetic energy of second, and finally, the elastic potential energy is released to the second elastomer, promotes the second spheroid and removes in order to block up the second opening towards the second opening part. The limiting part has simple structure and is beneficial to the mass production of the sprayer.

In an embodiment of the present invention, the inner diameter of the first opening gradually shrinks from the end close to the liquid suction chamber to the end away from the liquid suction chamber. So, when first spheroid and first opening cooperate, first spheroid and first opening can form line seal, and line seal sealing precision is high, is favorable to improving the leakproofness of first passageway. When first spheroid cuts off first passageway, liquid can't flow back to the stock solution chamber from imbibition chamber to the product property ability of whole atomizer has been improved.

In an embodiment of the present invention, the inner diameter of the second opening gradually shrinks from the end away from the imbibing cavity to the other end near the imbibing cavity. Similarly, when the second ball body is matched and connected with the second opening, the second ball body and the second opening can form line sealing, the line sealing precision is high, and the sealing performance of the second channel is improved. When the second ball cuts off the second channel, the liquid can not flow back to the liquid suction cavity from the liquid inlet channel, thereby improving the product performance of the whole sprayer.

In an embodiment of the present invention, the first ball is a steel ball, the surface of the steel ball is smooth, the sealing performance between the first ball and the first opening can be further improved, and the installation is convenient, the price is low, and the cost reduction is facilitated. The second ball is also provided with a steel ball. The steel ball surface is smooth, can further improve the leakproofness of second spheroid and second opening, and simple to operate, and the low price is favorable to reduce cost.

In an embodiment of the present invention, a first piston is movably disposed in the liquid suction chamber, a handle is mounted on the nozzle, one end of the handle extends into the nozzle and is connected to the first piston, so that the first piston moves toward the direction close to the liquid storage chamber by pressing the handle; still be provided with first elastomer in the imbibition chamber, first elastomer butt is between piston and imbibition intracavity wall to for the piston provides the power of moving towards the direction of keeping away from the stock solution chamber. Through the clearance fit of first piston and first elastomer, can improve the efficiency that liquid passed in and out the imbibition chamber. Further, the first elastic body comprises a compression spring, the selectable range of the elastic coefficient of the compression spring is wide, and the appropriate compression spring can be selected according to needs. Meanwhile, the compression spring has high use reliability and low failure rate, and is beneficial to prolonging the service life of the sprayer.

In an embodiment of the utility model, the atomizer still includes the feed liquor subassembly, and the feed liquor subassembly is equipped with the feed liquor chamber, and the feed liquor chamber is located between second passageway and the inlet channel, and the second passageway passes through feed liquor chamber intercommunication inlet channel. The liquid inlet assembly comprises a liquid inlet piston and a liquid inlet spring, the liquid inlet piston is movably arranged in the liquid inlet cavity and divides the liquid inlet cavity into a first part and a second part which are not communicated, the first part is communicated with the second channel and the liquid inlet channel, and the liquid inlet spring is arranged in the second part and is abutted against the liquid inlet piston, so that the liquid inlet piston has the tendency of moving from the second part to the first part. So set up for liquid can get into the spraying subassembly in batches, has effectively prolonged liquid from the time of spraying subassembly spun.

In an embodiment of the present invention, the liquid inlet piston includes a piston main body, and the piston main body is in sealing fit with an inner wall of the liquid inlet cavity to divide the liquid inlet cavity into a first part and a second part; the liquid inlet piston further comprises a protruding portion, and the protruding portion is connected to one end of the piston main body and extends towards the first portion. Piston main part and the sealed cooperation of inner wall in feed liquor chamber and piston main part are equipped with the protruding portion of advancing that extends towards the first portion, and liquid only does the short-term stop at the first portion in feed liquor chamber when getting into the feed liquor chamber, and later feed liquor spring promotes the feed liquor piston and removes towards the feed liquor passageway direction, impresses liquid into feed liquor passageway, and finally, liquid all gets into the spraying subassembly by the blowout atomizer. So, liquid can get into inlet channel rapidly after the short-term dwell of feed liquor intracavity for liquid can follow the interior continuous blowout of atomizer, avoids liquid to lead to the process of liquid blowout atomizer at feed liquor intracavity dwell time overlength discontinuous.

In an embodiment of the utility model, the feed liquor subassembly includes feed liquor main part and end cover, and the inside cavity of feed liquor main part forms the feed liquor chamber, and the one end of feed liquor main part is equipped with the first installing port in intercommunication feed liquor chamber, and feed liquor piston and feed liquor spring are installed in the feed liquor intracavity through first installing port, and the end cover is installed in first installing port department, and the feed liquor spring keeps away from the one end butt of feed liquor piston in the end cover. Through the first installing port that is equipped with the intercommunication feed liquor chamber in the one end of feed liquor main part, the feed liquor piston and the first installing port of feed liquor spring accessible are installed in the feed liquor intracavity fast, have improved the assembly efficiency of atomizer. Simultaneously, through set up the end cover in first installing port department, can the first installing port of shutoff to make the feed liquor spring keep away from the one end of feed liquor piston can the butt in the end cover, the end cover can provide the holding power for the feed liquor spring, when the feed liquor spring received the pressure effect of feed liquor piston, the feed liquor spring can be elastic potential energy with the kinetic energy conversion of feed liquor piston, and final feed liquor spring release elastic potential energy promotes the feed liquor piston and removes in order to impress liquid into inlet channel towards the second opening part.

In an embodiment of the present invention, the spraying assembly includes: the liquid outlet device comprises a spray head bracket, a liquid outlet head, a first sealing piece, a second sealing piece and an elastic piece. The spray head support is provided with a cavity, and when the handle is pressed, liquid in the bottle body can enter the cavity. The liquid outlet head is fixedly arranged at one end of the cavity. The first sealing element is fixedly arranged in the cavity. The second sealing element is movably arranged between the first sealing element and the liquid outlet head. One of the first sealing element and the second sealing element cuts off two ends of the cavity and is provided with a liquid outlet channel. The elastic piece is connected with the second sealing piece and provides acting force for the second sealing piece, so that the second sealing piece is matched with the first sealing piece to block the liquid outlet channel. When the pressure on one side of the second sealing piece, which is far away from the liquid outlet head, is larger than the acting force of the elastic piece, the second sealing piece can move towards the liquid outlet head to open the liquid outlet channel.

The utility model provides a sprayer, because first passageway has the first opening with stock solution chamber intercommunication, first check valve includes first spheroid, and first opening part is located movably to first spheroid to cut off stock solution chamber and imbibition chamber through the first opening of shutoff. Therefore, the first ball body can be directly arranged in the first channel, and the first opening can be blocked by utilizing the gravity action of the first ball body, so that the on-off of the first channel can be controlled. Similarly, the second passageway has a second opening communicating with the chamber, and the second one-way valve includes a second ball and a second elastomer; the second ball body is movably arranged at the second opening so as to block the liquid suction cavity and the liquid inlet channel by blocking the second opening; the second elastic body is abutted between the second opening and the second channel so that the second ball body can block the second opening. Therefore, the second ball body and the second elastic body are directly arranged in the second channel, the second ball body can be abutted to the second opening by utilizing the elastic force of the second elastic body, so that the second opening is sealed, and the on-off of the second channel is controlled. The first ball body, the second ball body and the second elastic body are very simple to install, and the first ball body, the second ball body and the second elastic body can be reused for multiple times and are more difficult to damage, so that the service life is longer.

Drawings

Fig. 1 is a cross-sectional view of a sprayer according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the sprayer assembly of FIG. 1;

FIG. 4 is an exploded view of the sprayer assembly of FIG. 1;

fig. 5 is a cross-sectional view of a sprayer according to another embodiment of the invention;

FIG. 6 is a cross-sectional view of the sprayer assembly of FIG. 5;

FIG. 7 is an exploded view of the sprayer assembly of FIG. 5;

fig. 8 is a schematic view of a bottle mouth structure of a sprayer according to another embodiment of the present invention.

Reference numerals: 1. a spray assembly; 11. a spray head holder; 12. a cavity; 121. a first step; 122. a first chamber; 123. a second chamber; 124. a second step; 13. a liquid outlet head; 14. a first seal member; 141. a rod portion; 15. a second seal member; 151. assembling a groove; 152. a boss portion; 16. a liquid outlet channel; 161. a first constricting channel; 162. a first main channel; 163. a second main channel; 164. a third main channel; 165. a second constricting channel; 17. an elastic member; 18. an atomizing head; 19. a liquid inlet channel; 2. a bottle body; 21. a bottle body; 211. a bottle mouth; 212. a liquid storage cavity; 22. a spray head; 23. a handle; 3. a wicking assembly; 31. a liquid suction chamber; 311. a first piston; 312. a first elastic body; 32. a first channel; 321. a first sphere; 322. a first opening; 33. a second channel; 331. a second sphere; 332. a second elastomer; 333. a second opening; 334. a second mounting opening; 34. a first pipe portion; 341. a first conduit; 35. a second pipe portion; 351. a second conduit; 36. a third pipe portion; 37. a limiting part; 4. a liquid inlet component; 41. a liquid inlet cavity; 411. a first portion; 412. a second portion; 42. a liquid inlet piston; 421. a piston body; 422. a protruding portion; 43. a liquid inlet spring; 44. a liquid inlet main body; 45. an end cap; 46. a first mounting opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 and 2, fig. 1 is a sectional view of a sprayer according to an embodiment of the present invention, and fig. 2 is a partial enlarged view of a portion a in fig. 1. The utility model provides a sprayer includes: bottle 2, spraying assembly 1 and imbibing assembly 3.

The bottle body 2 comprises a bottle body 21 and a spray head 22, the spray head 22 is connected with one end of the bottle body 21, and the bottle body 21 is provided with a liquid storage cavity 212 for storing liquid.

The spraying assembly 1 is arranged in the spray head 22, the spraying assembly 1 is provided with a liquid inlet channel 19, and liquid can enter the spraying assembly 1 through the liquid inlet channel 19 and is sprayed out of the spraying assembly 1.

Imbibition subassembly 3 is located in shower nozzle 22, and imbibition subassembly 3 is equipped with imbibition chamber 31, first passageway 32 and second passageway 33, and first passageway 32 intercommunication imbibition chamber 31 and stock solution chamber 212 to make the liquid in the stock solution chamber 212 can get into imbibition chamber 31 through first passageway 32 in, second passageway 33 intercommunication imbibition chamber 31 and inlet channel 19, so that the liquid in imbibition chamber 31 can get into inlet channel 19 through second passageway 33.

A first one-way valve is arranged in the first channel 32 and used for controlling the connection and disconnection between the liquid storage cavity 212 and the liquid suction cavity 31, and a second one-way valve is arranged in the second channel 33 and used for controlling the connection and disconnection between the liquid suction cavity 31 and the liquid inlet channel 19.

First passageway 32 has first opening 322 that communicates with reservoir 212, and the first check valve includes first spheroid 321, and first spheroid 321 is movably located first opening 322 department to through shutoff first opening 322 and cut off reservoir 212 and imbibition chamber 31. The second passage 33 has a second opening 333 communicating with the suction chamber 31, and the second check valve comprises a second ball 331 and a second elastic body 332; the second ball 331 is movably arranged at the second opening 333 to block the liquid suction cavity 31 and the liquid inlet channel 19 by blocking the second opening 333; the second elastic body 332 abuts between the second ball 331 and the inner wall of the second passage 33 so that the second ball 331 can close the second opening 333.

In this embodiment, when the sprayer is in use, the liquid in liquid storage cavity 212 can enter liquid suction cavity 31 from liquid storage cavity 212 through first channel 32, and first one-way valve is arranged in first channel 32. The liquid in the liquid suction cavity 31 can enter the liquid inlet channel 19 through the second channel 33, and a second one-way valve is arranged in the second channel 33. In summary, the flow process of the liquid in the sprayer is as follows: liquid enters the liquid suction chamber 31 from the liquid storage chamber 212 through the first channel 32, then the liquid enters the liquid inlet channel 19 from the liquid suction chamber 31 through the second channel 33, and finally the liquid enters the spraying assembly 1 from the liquid inlet channel 19 and is sprayed out of the sprayer.

Since first passageway 32 has first opening 322 communicating with reservoir 212, the first one-way valve comprises first ball 321, and first ball 321 is movably disposed at first opening 322 to block reservoir 212 and pipette chamber 31 by blocking first opening 322. Therefore, the first ball 321 is directly installed in the first channel 32, and the first opening 322 can be blocked by the gravity of the first ball 321, so as to control the on/off of the first channel 32. Likewise, the second passage 33 has a second opening 333 communicating with the suction chamber 31, and the second one-way valve comprises a second ball 331 and a second elastomer 332; the second ball 331 is movably arranged at the second opening 333 to block the liquid suction cavity 31 and the liquid inlet channel 19 by blocking the second opening 333; the second elastic body 332 abuts between the second opening 333 and the second channel 33 so that the second ball 331 can block the second opening 333. Therefore, the second ball 331 and the second elastic body 332 may be directly mounted in the second channel 33, and the second ball 331 may abut against the second opening 333 by the elastic force of the second elastic body 332 to close the second opening 333, thereby controlling the opening and closing of the second channel 33. The first sphere 321, the second sphere 331 and the second elastic body 332 are very simple to install, and the first sphere 321, the second sphere 331 and the second elastic body 332 can be reused and are more difficult to damage, so that the service life is longer. The first elastic body 312 and the second elastic body 332 may be compression springs. To sum up, the utility model provides a problem that first check valve and the easy damage of second check valve of current atomizer has effectively been solved to the atomizer.

In one embodiment, as shown in FIG. 2, wicking assembly 3 includes first tube portion 34 and second tube portion 35, first tube portion 34 having first conduit 341 hollowed therein, second tube portion 35 having second conduit 351 hollowed therein, second tube portion 35 detachably attached to a lower end of first tube portion 34, first conduit 341 communicating with second conduit 351 to form first passage 32; the first opening 322 is formed in the second duct 351. When the first ball 321 is to be installed, the first ball 321 is first installed in the first pipe 341 or the second pipe 351, and the second pipe 35 is connected to the first pipe 34, so that the first ball 321 can be installed in the first passage 32. Thus, the first ball 321 is very simple and convenient to mount, which is beneficial to the rapid assembly of the sprayer and improves the production efficiency of the sprayer.

In one embodiment, as shown in fig. 2, the liquid absorbing assembly 3 further includes a third tube 36 and a position-limiting part 37, the third tube 36 is hollow to form a second passage 33, one end of the third tube 36 is provided with a second mounting hole 334 communicated with the second passage 33, and the second ball 331 and the second elastic body 332 are mounted in the second passage 33 through the second mounting hole 334; the position-limiting portion 37 is mounted at the second mounting opening 334 to limit the second elastic body 332 in the second channel 33. Thus, the second ball 331 and the second elastic body 332 are very easy to install, which is beneficial to the rapid assembly of the sprayer and improves the production efficiency of the sprayer. The limiting portion 37 can provide a supporting force for the second elastic body 332, and when the second spring is under the pressure action of the second ball 331, the kinetic energy of the second ball 331 can be converted into elastic potential energy, and finally, the second elastic body 332 releases the elastic potential energy to push the second ball 331 to move toward the second opening 333 to block the second opening 333. The limiting part 37 is simple in structure and beneficial to large-scale production of the sprayer.

In one embodiment, as shown in FIG. 2, the inner diameter of the first opening 322 tapers from the end proximal to the chamber 31 to the end distal to the chamber 31. Therefore, when the first ball 321 is matched with the first opening 322, the first ball 321 and the first opening 322 can form a line seal, and the line seal has high sealing precision, which is beneficial to improving the sealing performance of the first channel 32. When first ball 321 cuts off first channel 32, liquid can not flow back to liquid storage cavity 212 from liquid suction cavity 31, so that product performance of the whole sprayer is improved.

In one embodiment, as shown in FIG. 2, the inner diameter of the second opening 333 tapers from the end distal to the chamber 31 to the end proximal to the chamber 31. Similarly, when the second ball 331 is connected to the second opening 333 in a fitting manner, the second ball 331 and the second opening 333 may form a line seal, so that the line seal has high sealing accuracy, and the sealing performance of the second channel 33 is improved. When the second ball 331 cuts off the second channel 33, the liquid cannot flow back to the liquid suction chamber 31 from the liquid inlet channel 19, thereby improving the product performance of the whole sprayer.

In an embodiment, as shown in fig. 2, the first ball 321 is a steel ball, the surface of the steel ball is smooth, the sealing performance between the first ball 321 and the first opening 322 can be further improved, and the installation is convenient, the price is low, and the cost reduction is facilitated. The second ball 331 is also provided as a steel ball. The steel ball has smooth surface, can further improve the sealing performance of the second ball body 331 and the second opening 333, and has convenient installation, low price and contribution to reducing the cost.

In one embodiment, as shown in fig. 2, a first piston 311 is movably disposed in the liquid suction chamber 31, a handle 23 is mounted on the nozzle 22, one end of the handle 23 extends into the nozzle 22 and is connected to the first piston 311, the handle 23 can be directly connected to the first piston 311 or connected to the first piston 311 through a transmission assembly, and the first piston 311 is moved toward the reservoir 212 by pressing the handle 23. The first elastic body 312 is further disposed in the liquid suction chamber 31, and the first elastic body 312 abuts between the piston and the inner wall of the liquid suction chamber 31 to provide a force to the piston moving in a direction away from the liquid storage chamber 212. The efficiency of liquid entering and exiting the liquid suction chamber 31 can be improved by the movable fit of the first piston 311 and the first elastic body 312. Further, the first elastic body 312 includes a compression spring, the elastic coefficient of the compression spring has a wide selectable range, and a suitable compression spring can be selected according to requirements. Meanwhile, the compression spring has high use reliability and low failure rate, and is beneficial to prolonging the service life of the sprayer.

The operating principle of the sprayer is as follows: before the handle 23 is pressed, the first ball 321 blocks the first opening 322, and the second ball 331 blocks the second opening 333. When the handle 23 is pressed for the first time, the handle 23 applies pressure to the first piston 311, so that the first piston 311 presses the first elastic body 312 towards the bottle body 21, the liquid suction cavity 31 is compressed, air in the liquid suction cavity 31 is compressed to push the second ball 331 to press the second elastic body 332 to open the second opening 333, and the air in the liquid suction cavity 31 enters the second channel 33 through the second opening 333, enters the liquid inlet channel 19 and is finally discharged out of the sprayer.

When the handle 23 is released for the first time, the first elastic body 312 pushes the first piston 311 towards the direction away from the bottle body 21, the liquid suction cavity 31 expands, and the air pressure in the liquid suction cavity 31 is suddenly reduced; under the action of the elastic force of the second elastic body 332, the second ball 331 blocks the second opening 333 again; at this time, the air pressure in reservoir 212 is greater, so that the liquid in reservoir 212 pushes first ball 321 to move away from reservoir 212 to open first opening 322, and at this time, the liquid in reservoir 212 enters chamber 31 through first channel 32.

Pressing the handle 23 a second time, the first piston 311 in the liquid suction chamber 31 presses the first elastic body 312 again toward the body 21; at this time, the liquid in the liquid suction chamber 31 pushes the second ball 331 to press the second elastic body 332 to open the second opening 333, and the liquid in the liquid suction chamber 31 enters the second passage 33 through the second opening 333 and enters the liquid inlet passage 19, and is finally discharged out of the nebulizer.

This cycle is repeated, so that the liquid is continuously sprayed from the sprayer by pressing the handle 23.

The first piston 311 and the first elastic body 312 have simple structures and are easy to assemble, and the production cost of the sprayer can be effectively reduced. Further, the first elastic body 312 is a tower-shaped spring, which is easy to install and has a stable structure.

In an embodiment, as shown in fig. 1 and fig. 2, the sprayer further includes a liquid inlet assembly 4, the liquid inlet assembly 4 is provided with a liquid inlet cavity 41, the liquid inlet cavity 41 is provided between the second channel 33 and the liquid inlet channel 19, and the second channel 33 is communicated with the liquid inlet channel 19 through the liquid inlet cavity 41. The liquid inlet assembly 4 includes a liquid inlet piston 42 and a liquid inlet spring 43, the liquid inlet piston 42 is movably disposed in the liquid inlet chamber 41 and divides the liquid inlet chamber 41 into a first part 411 and a second part 412 which are not communicated, the first part 411 is communicated with the second passage 33 and the liquid inlet passage 19, and the liquid inlet spring 43 is disposed in the second part 412 and abuts against the liquid inlet piston 42, so that the liquid inlet piston 42 has a tendency to move from the second part 412 to the first part 411. After the liquid leaves the second channel 33, part of the liquid enters the inlet channel 19 directly and is ejected out of the atomizer through the atomizer assembly 1. Other liquid then gets into the first part 411 of feed liquor chamber 41 in the feed liquor subassembly 4, and liquid impact feed liquor piston 42 makes feed liquor spring 43 compressed, and at this moment, liquid will be in the short-term dwell in the first part 411 of feed liquor chamber 41, and later, feed liquor spring 43 promotes feed liquor piston 42 and moves towards feed liquor channel 19 direction, with liquid pressure feed liquor channel 19, and finally, liquid is whole to get into spraying subassembly 1 and is spouted the atomizer. With this arrangement, liquid can be batched into spray assembly 1 and continued to be sprayed from the sprayer for a period of time even if handle 23 is released.

In one embodiment, as shown in fig. 1 and 2, the inlet piston 42 includes a piston main body 421, and the piston main body 421 is in sealing fit with the inner wall of the inlet chamber 41 to divide the inlet chamber 41 into a first portion 411 and a second portion 412; the inlet piston 42 further includes a protruding portion 422, and the protruding portion 422 is connected to one end of the piston main body 421 and extends toward the first portion 411. The piston main body 421 is in sealing fit with the inner wall of the liquid inlet cavity 41, the piston main body 421 is provided with a protruding portion 422 extending towards the first portion 411, when liquid enters the liquid inlet cavity 41, the liquid only stays in the first portion 411 of the liquid inlet cavity 41 for a short time, then the liquid inlet spring 43 pushes the liquid inlet piston 42 to move towards the liquid inlet channel 19, the liquid is pressed into the liquid inlet channel 19, and finally, the liquid completely enters the spraying assembly 1 and is sprayed out of the sprayer. Therefore, after the liquid stays in the liquid inlet cavity 41 for a short time, the liquid can rapidly enter the liquid inlet channel 19, so that the liquid can be continuously sprayed out of the sprayer, and the phenomenon that the liquid spraying out of the sprayer is discontinuous due to the fact that the liquid stays in the liquid inlet cavity 41 for a long time is avoided.

In an embodiment, as shown in fig. 1 and fig. 2, the liquid inlet assembly 4 includes a liquid inlet main body 44 and an end cover 45, the liquid inlet main body 44 is hollow to form a liquid inlet cavity 41, one end of the liquid inlet main body 44 is provided with a first installation opening 46 communicated with the liquid inlet cavity 41, the liquid inlet piston 42 and the liquid inlet spring 43 are installed in the liquid inlet cavity 41 through the first installation opening 46, the end cover 45 is installed at the first installation opening 46, and one end of the liquid inlet spring 43 far away from the liquid inlet piston 42 abuts against the end cover 45. Through being equipped with the first installing port 46 of intercommunication feed liquor chamber 41 at the one end of feed liquor main part 44, feed liquor piston 42 and feed liquor spring 43 accessible first installing port 46 quick mounting have improved the assembly efficiency of atomizer in feed liquor chamber 41. Meanwhile, the end cover 45 is arranged at the first mounting hole 46, the first mounting hole 46 can be blocked, one end, away from the liquid inlet piston 42, of the liquid inlet spring 43 can abut against the end cover 45, the end cover 45 can provide supporting force for the liquid inlet spring 43, when the liquid inlet spring 43 is under the pressure action of the liquid inlet piston 42, the liquid inlet spring 43 can convert kinetic energy of the liquid inlet piston 42 into elastic potential energy, and finally the liquid inlet spring 43 releases the elastic potential energy to push the liquid inlet piston 42 to move towards the second opening 333 to press liquid into the liquid inlet channel 19.

In one embodiment, as shown in fig. 3, 4, 6 and 7, fig. 3 is a sectional view at the spray assembly 1 of the sprayer shown in fig. 1, fig. 4 is an exploded view at the spray assembly 1 of the sprayer shown in fig. 1, fig. 6 is a sectional view at the spray assembly 1 of the sprayer shown in fig. 5, and fig. 7 is an exploded view at the spray assembly 1 of the sprayer shown in fig. 5. The spray assembly 1 comprises: spray head holder 11, liquid outlet head 13, first sealing member 14, second sealing member 15 and elastic member 17. The nozzle holder 11 is provided with a cavity 12, and the cavity 12 is communicated with the liquid inlet channel 19, so that when the handle 23 is pressed, the liquid in the bottle body 21 can enter the cavity 12 through the liquid inlet channel 19.

The liquid outlet head 13 is fixedly arranged at one end of the cavity 12. The first sealing member 14 is fixedly disposed in the cavity 12. The second sealing member 15 is movably arranged between the first sealing member 14 and the liquid outlet head 13. One of the first sealing member 14 and the second sealing member 15 blocks both ends of the cavity 12 and is provided with a liquid outlet passage 16. It should be noted that "one of the first sealing member 14 and the second sealing member 15 blocks both ends of the cavity 12 and is provided with the liquid outlet passage 16" may be two cases: the first sealing element 14 cuts off two ends of the cavity 12, and the first sealing element 14 is provided with a liquid outlet channel 16; alternatively, the second sealing member 15 blocks both ends of the cavity 12, and the second sealing member 15 is provided with a liquid outlet passage 16. Thus, the liquid in the cavity 12 can only flow from one end to the other end through the liquid outlet channel 16. The two ends of the cavity 12 can be separated by separating the liquid outlet channel 16.

The resilient member 17 is connected to the second sealing member 15 and provides a force to the second sealing member 15 to cause the second sealing member 15 to cooperate with the first sealing member 14 to block the outlet passage 16. When the side of the second sealing member 15 away from the outlet head 13 is subjected to a pressure greater than the force of the elastic member 17, the second sealing member 15 can move towards the outlet head 13 to open the outlet channel 16.

In addition, the spraying assembly 1 further comprises an atomizing head 18, the atomizing head 18 is disposed at the other end of the liquid outlet head 13 far away from the cavity 12, and the atomizing head 18 can convert the fast flowing liquid from a fluid state to a vapor state, so that the liquid passing through the spraying assembly 1 can form vapor to be sprayed out.

The operating principle of the sprayer is as follows: when the handle 23 is pressed, the liquid in the bottle body 21 enters the cavity 12 of the nozzle holder 11. The handle 23 is continuously pressed, the liquid in the cavity 12 continuously applies pressure to the second sealing element 15, when the pressure applied to the side, away from the liquid outlet head 13, of the second sealing element 15 is greater than the acting force of the elastic element 17, the liquid extrudes the second sealing element 15 to move, so that the liquid outlet channel 16 is opened, the liquid flows to the liquid outlet head 13 after passing through the liquid outlet channel 16, and finally enters the atomizing head 18 to form vaporous liquid which is then sprayed out of the atomizer. After the handle 23 is stopped being pressed, the second sealing member 15 will move reversely under the elastic force of the elastic member 17, thereby cooperating with the first sealing member 14 to block the liquid outlet channel 16, and the liquid can not be ejected from the liquid ejecting head. Therefore, the problems of liquid waste and environmental pollution caused by the fact that liquid in the sprayer easily and directly flows out of the sprayer are effectively solved.

The outlet channel 16 can be provided in the first seal 14 as well as in the second seal 15. Two different embodiments are described in detail below.

As shown in fig. 3 and 4, in the present embodiment, the second sealing member 15 blocks both ends of the cavity 12, and specifically, the second sealing member 15 has a cylindrical shape, and an outer wall of the second sealing member 15 is closely attached to an inner wall of the cavity 12. The liquid outlet channel 16 is arranged in the second sealing member 15 and penetrates through two ends of the second sealing member 15, the liquid outlet channel 16 comprises a first contraction channel 161, and the inner diameter of the first contraction channel 161 is gradually reduced from one end close to the first sealing member 14 to one end close to the liquid outlet head 13. The first sealing member 14 comprises a stem portion 141 which stem portion 141 extends into the outlet channel 16 and cooperates with the first constricted passage 161 to close off the outlet channel 16.

The pressure of the liquid will be all acting on the second sealing 15 before the outlet channel 16 is opened. When the pressure of the liquid is greater than the elastic force of the elastic member 17, the liquid pushes the second sealing member 15 to move toward the liquid outlet head 13. At the instant the second sealing member 15 is moved towards the dispensing head 13, a near vacuum area is momentarily formed between the second sealing member 15 and the first sealing member 14. Under the action of air pressure, liquid can be sucked into the vacuum area and enter the liquid outlet channel 16 quickly, so that the speed of the liquid sprayed out of the spraying assembly 1 can be increased, and the working efficiency of the spraying assembly 1 is greatly improved. In this embodiment, the liquid outlet channel 16 further comprises a first main channel 162 and a second main channel 163 connecting the first main channel 162 and the first converging channel 161, and the inner diameter of the second main channel 163 is larger than that of the first main channel 162. The liquid pushes the second sealing member 15 towards the outlet head 13 and causes one end of the second sealing member 15 to abut the outlet head 13. And simultaneously liquid enters the liquid outlet head 13 from the liquid outlet channel 16. The inner diameter of the first main channel 162 is smaller, and the inner diameter of the second main channel 163 is larger than that of the first main channel 162, so that even if the assembly position of the second sealing element 15 or the liquid outlet head 13 is slightly eccentric, the probability that liquid cannot enter the liquid outlet head 13 from the second main channel 163 of the liquid outlet channel 16 is greatly reduced, and the fault tolerance rate of assembly of the second sealing element 15 and the liquid outlet head 13 is improved.

In an embodiment, as shown in fig. 3, a first step 121 is disposed in the cavity 12, the second sealing member 15 is located between the first step 121 and the liquid outlet head 13, and when the second sealing member 15 cooperates with the first sealing member 14 to block the liquid outlet channel 16, an end of the second sealing member 15 away from the liquid outlet head 13 abuts against the first step 121. The first step 121 is configured to block the second sealing member 15, thereby facilitating the balance of the second sealing member 15 and avoiding eccentricity of the second sealing member 15 when engaged with the first sealing member 14.

In one embodiment, as shown in FIG. 3, the first seal 14 is integrally formed with the showerhead holder 11. Thus, the structure is simple, and the processing and manufacturing of the spray head bracket 11 and the first sealing piece 14 are facilitated.

In one embodiment, as shown in fig. 3, one end of the elastic member 17 abuts against the second sealing member 15, and the other end abuts against the liquid outlet head 13.

In one embodiment, as shown in fig. 3, an end surface of the second sealing member 15 near one end of the liquid outlet head 13 is provided with a mounting groove 151, and one end of the elastic member 17 abuts against the mounting groove 151.

By providing the fitting groove 151 in the end surface of the second sealing member 15 near the liquid outlet head 13, one end of the elastic member 17 can be more firmly abutted in the fitting groove 151 of the second sealing member 15. During assembly, the second sealing element 15 can be firstly installed in the cavity 12, so that the rod part 141 of the first sealing element 14 is inserted into the liquid outlet channel 16, the elastic element 17 is installed in the assembling groove 151, and the liquid outlet head 13 is finally installed in the cavity 12.

In this embodiment, the elastic member 17 includes a spring, and further, the elastic member 17 includes a compression spring. Simple structure, cheap material, and easy assembly. In other embodiments, the elastic member 17 may also include an extension spring, the extension spring is connected to one end of the second sealing member 15 close to the first sealing member 14, the other end of the extension spring is connected to the spray head holder 11, and the extension spring exerts a pulling force on the second sealing member 15, so that the rod portion 141 of the first sealing member 14 cooperates with the first contraction channel 161 of the second sealing member 15 to block the liquid outlet channel 16. In other embodiments, the elastic member 17 may also be a stretch cord, which functions like an extension spring, and is connected to one end of the second sealing member 15 close to the first sealing member 14, and the other end of the stretch cord is connected to the nozzle holder 11, and the stretch cord exerts a pulling force on the second sealing member 15, so that the rod portion 141 of the first sealing member 14 cooperates with the first contraction channel 161 of the second sealing member 15 to block the liquid outlet channel 16.

As shown in fig. 5, 6 and 7, fig. 5 is a sectional view of a sprayer according to another embodiment of the present invention. In this embodiment, the first sealing member 14 blocks two ends of the cavity 12, the liquid outlet channel 16 is disposed in the first sealing member 14 and penetrates two ends of the first sealing member 14, and the liquid outlet channel 16 includes a third main channel 164 and a second contraction channel 165 which are communicated with each other. Third main channel 164 extends from the end of first sealing member 14 close to liquid outlet head 13 to the end far from liquid outlet head 13, second converging channel 165 is connected to the end of third main channel 164 far from liquid outlet head 13, and the inner diameter of second converging channel 165 gradually converges from the end close to third main channel 164 to the end far from third main channel 164. The second sealing member 15 is movably disposed in the third main channel 164, and two ends of the elastic member 17 respectively abut against the second sealing member 15 and the liquid outlet head 13, so that the second sealing member 15 moves toward the second contraction channel 165 and blocks the second contraction channel 165.

During assembly, the second sealing member 15 can be firstly arranged in the liquid outlet channel 16, the elastic member 17 can be arranged in the liquid outlet channel 16, then the first sealing member 14 provided with the second sealing member 15 and the elastic member 17 can be arranged in the cavity 12, and finally the liquid outlet head 13 can be arranged. The embodiment has a very simple structure and a very simple and convenient installation process.

In one embodiment, as shown in fig. 6, the cavity 12 includes a first cavity 122 and a second cavity 123, the second cavity 123 is connected to one end of the first cavity 122, and a second step 124 is formed at the connection point of the first cavity 122 and the second cavity 123; a boss 152 is arranged at one end of the first sealing element 14, which is far away from the boss 152, is arranged in the first cavity 122, the boss 152 of the first sealing element 14 is arranged in the second cavity 123, and the boss 152 abuts against the second step 124; liquid outlet head 13 is mounted in second chamber 123.

By forming the second step 124 at the junction of the first chamber 122 and the second chamber 123 and abutting the first sealing member 14 at the second step 124 via the protrusion 152, the assembly of the first sealing member 14 in the spray assembly 1 can be more secure.

In an embodiment, as shown in fig. 6, the second sealing element 15 is provided as a sphere, when the second sealing element 15 moves in the liquid outlet channel 16, the contact area between the second sealing element 15 and the inner wall of the liquid outlet channel 16 is smaller, and the second sealing element 15 can move more flexibly, which is beneficial to reducing the wear of the first sealing element 14 and the second sealing element 15 and improving the service life of the spray assembly 1. Also, the elastic member 17 may be used because the elastic member 17 having a small elastic coefficient can move the second sealing member 15 with a small force. And the sensitivity of the elastic element 17 with smaller elastic coefficient is higher, so that the liquid outlet channel 16 can be opened and blocked more timely.

In this embodiment, the elastic member 17 includes a spring.

The spring has a good elastic deformation capacity and can provide acting force for the second sealing element 15, so that the second sealing element can quickly block the liquid outlet channel 16 and prevent liquid from flowing out of the spraying assembly 1. Meanwhile, the spring is easy to process and assemble, and the production cost of the atomization assembly is reduced. Further, the elastic member 17 includes a compression spring, and has a simple structure, a cheap material, and easy assembly.

Referring to fig. 1 and 5, the bottle body 21 has a bottle opening 211, and the bottle body 21 is connected to the nozzle 22 through the bottle opening 211. In this embodiment, the mouth 211 is a 38-gauge mouth. The No. 38 bottle mouth is a standard bottle mouth in the industry and has better universality. Other standard finish sizes include 33, 35, and 40, etc.

Fig. 8 is a schematic view of a bottle mouth structure of a sprayer according to another embodiment of the present invention, as shown in fig. 8. The 38-neck finish has the following specifications. An external thread is arranged on the outer periphery of the No. 38 bottle mouth; the size of the first outer diameter T of the No. 38 bottle mouth provided with the external thread is as follows: t is more than or equal to 1.452 inches and less than or equal to 1.476 inches; the size of the second outer diameter E of the No. 38 bottle mouth without the external thread is as follows: e is more than or equal to 1.358 inches and less than or equal to 1.382 inches; the inner diameter I of the No. 38 bottle mouth is as follows: i is more than or equal to 0.987 inches; the height H of the No. 38 bottle mouth is as follows: h is more than or equal to 0.388 inches and less than or equal to 0.418 inches; the minimum length S of the external thread from the top end of the No. 38 bottle mouth is 0.031 inch and less than or equal to 0.061 inch.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A sprayer, comprising:

the bottle body (2) comprises a bottle body (21) and a spray head (22), the spray head (22) is connected to one end of the bottle body (21), and the bottle body (21) is provided with a liquid storage cavity (212) for storing liquid;

the spraying assembly (1) is arranged in the spray head (22), the spraying assembly (1) is provided with a liquid inlet channel (19), and liquid can enter the spraying assembly (1) through the liquid inlet channel (19) and is sprayed out of the spraying assembly (1);

the liquid suction component (3) is arranged in the spray head (22), the liquid suction component (3) is provided with a liquid suction cavity (31), a first channel (32) and a second channel (33), the first channel (32) is communicated with the liquid suction cavity (31) and the liquid storage cavity (212), so that liquid in the liquid storage cavity (212) can enter the liquid suction cavity (31) through the first channel (32), and the second channel (33) is communicated with the liquid suction cavity (31) and the liquid inlet channel (19), so that liquid in the liquid suction cavity (31) can enter the liquid inlet channel (19) through the second channel (33);

a first one-way valve is arranged in the first channel (32), the first one-way valve is used for controlling the on-off between the liquid storage cavity (212) and the liquid suction cavity (31), a second one-way valve is arranged in the second channel (33), the second one-way valve is used for controlling the on-off between the liquid suction cavity (31) and the liquid inlet channel (19),

the first channel (32) is provided with a first opening (322) communicated with the liquid storage cavity (212), the first one-way valve comprises a first ball body (321), and the first ball body (321) is movably arranged at the first opening (322) to block the liquid storage cavity (212) and the liquid suction cavity (31) by blocking the first opening (322);

the second channel (33) is provided with a second opening (333) communicated with the liquid suction cavity (31), and the second one-way valve comprises a second ball (331) and a second elastic body (332); the second ball (331) is movably arranged at the second opening (333) so as to block the liquid suction cavity (31) and the liquid inlet channel (19) by blocking the second opening (333); the second elastic body (332) abuts between the second ball (331) and an inner wall of the second passage (33) to enable the second ball (331) to close the second opening (333).

2. A nebulizer as claimed in claim 1, characterised in that the wicking assembly (3) comprises a first tube portion (34) and a second tube portion (35), the first tube portion (34) being internally hollowed to form a first conduit (341), the second tube portion (35) being internally hollowed to form a second conduit (351), the second tube portion (35) being detachably connected to a lower end of the first tube portion (34), the first conduit (341) communicating with the second conduit (351) to form the first passage (32); the first opening (322) is formed within the second conduit (351).

3. A nebulizer according to claim 1, wherein the liquid suction assembly (3) further comprises a third tube portion (36) and a stopper portion (37), the third tube portion (36) is hollow inside to form the second passage (33), one end of the third tube portion (36) is provided with a second mounting port (334) communicating with the second passage (33), and the second ball (331) and the second elastic body (332) are mounted in the second passage (33) through the second mounting port (334); the stopper portion (37) is attached to the second attachment opening (334) to retain the second elastic body (332) in the second channel (33).

4. A sprayer according to claim 1, characterized in that the internal diameter of said first opening (322) tapers from an end close to said aspirating chamber (31) to an end remote from said aspirating chamber (31).

5. A nebulizer as claimed in claim 1, wherein the inner diameter of the second opening (333) tapers from one end distal to the pipette chamber (31) to the other end proximal to the pipette chamber (31).

6. A nebulizer as claimed in claim 1, characterised in that the first ball (321) is provided as a steel ball; and/or the second ball body (331) is arranged as a steel ball.

7. A sprayer according to claim 1, characterized in that a first piston (311) is movably arranged in the liquid suction chamber (31), a handle (23) is mounted on the spray head (22), one end of the handle (23) extends into the spray head (22) and is connected with the first piston (311) so as to move the first piston (311) towards the direction close to the liquid storage chamber (212) by pressing the handle (23); the liquid suction cavity (31) is also internally provided with a first elastic body (312), and the first elastic body (312) is abutted between the piston and the inner wall of the liquid suction cavity (31) so as to provide force for the piston to move towards the direction far away from the liquid storage cavity (212).

8. The sprayer according to claim 1, characterized in that it further comprises an intake assembly (4), said intake assembly (4) being provided with an intake chamber (41), said intake chamber (41) being provided between said second channel (33) and said intake channel (19), and said second channel (33) being in communication with said intake channel (19) through said intake chamber (41);

feed liquor subassembly (4) are including feed liquor piston (42) and feed liquor spring (43), feed liquor piston (42) movably locates in feed liquor chamber (41), and will feed liquor chamber (41) is separated into not communicating first portion (411) and second portion (412), first portion (411) intercommunication second passageway (33) with feed liquor passageway (19), feed liquor spring (43) locate in second portion (412), and the butt in feed liquor piston (42), so that feed liquor piston (42) have by second portion (412) towards the trend of first portion (411) removal.

9. A sprayer according to claim 8, characterized in that said inlet piston (42) comprises a piston body (421), said piston body (421) being in sealing engagement with the inner wall of said inlet chamber (41) to divide said inlet chamber (41) into said first portion (411) and said second portion (412); the liquid inlet piston (42) further comprises a protruding portion (422), and the protruding portion (422) is connected to one end of the piston main body (421) and extends towards the first portion (411).

10. The atomizer according to claim 8, characterized in that, the feed liquor subassembly (4) includes feed liquor main part (44) and end cover (45), the feed liquor cavity (41) is formed to the feed liquor main part (44) inside cavity, the one end of feed liquor main part (44) is equipped with the first installing port (46) that communicates the feed liquor cavity (41), feed liquor piston (42) and feed liquor spring (43) are installed in the feed liquor cavity (41) through the first installing port (46), end cover (45) are installed in the first installing port (46), the one end that feed liquor spring (43) kept away from the feed liquor piston (42) butts in the end cover (45).

11. Nebulizer according to claim 1, characterized in that the nebulizing assembly (1) comprises:

the spray head (22) is arranged on the spray head (22) bracket (11) and is provided with a cavity (12);

the liquid outlet head (13) is fixedly arranged at one end of the cavity (12);

a first sealing element (14) fixedly arranged in the cavity (12);

the second sealing element (15) is movably arranged between the first sealing element (14) and the liquid outlet head (13); one of the first sealing element (14) and the second sealing element (15) cuts off two ends of the cavity (12) and is provided with a liquid outlet channel (16); and

an elastic member (17) connecting the second sealing member (15) and providing a force to the second sealing member (15) to make the second sealing member (15) and the first sealing member (14) cooperate to block the liquid outlet channel (16);

when the side of the second sealing member (15) far away from the liquid outlet head (13) is subjected to pressure higher than the acting force of the elastic member (17), the second sealing member (15) can move towards the liquid outlet head (13) to open the liquid outlet channel (16).