Atomizing pump

Abstract

The utility model relates to the technical field of atomizing pumps, and provides an atomizing pump which comprises a connecting shell, a liquid pumping assembly and an atomizing nozzle, the connecting shell is detachably connected to a bottle body, and the connecting shell is used for sealing the opening part of the bottle body; the liquid pumping assembly is connected with the connecting shell and used for pumping liquid in the bottle body. The atomizing nozzle is connected with the liquid pumping assembly, and the atomizing nozzle is used for atomizing the liquid pumped by the liquid pumping assembly and spraying out the liquid; the liquid pumping assembly comprises a liquid storage cylinder and a piston, a receding groove is formed in the inner wall of the liquid storage cylinder, a backflow hole is formed in the liquid storage cylinder, and the backflow hole is located above the receding groove and communicated with the liquid storage cavity. The liquid spraying device has the advantages that the possibility that liquid is sprayed out in a liquid droplet mode is reduced, and liquid waste is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of spray pumps, and in particular to a spray pump. Background Art

[0002] A spray pump is a pump that converts liquid into mist, and is widely used in the cosmetics industry, agriculture, and daily necessities. A spray pump is usually installed at the mouth of a bottle containing liquid. The user can manually press the spray pump to make the liquid inside the bottle spray out through the nozzle. The spray pump compresses and atomizes the liquid in the bottle, so that the liquid is sprayed in the form of fine atomized particles.

[0003] In the prior art, a spray pump generally includes a connection shell connected to a bottle, an annular plastic spring, a one-way valve stem, and a pressing shell. A water storage cavity is provided inside the connection shell, and a water outlet sleeve is provided at the bottom of the water storage cavity, and the water outlet sleeve is connected to the inside of the bottle body. The annular plastic spring cover is provided at the cavity opening of the water storage cavity, and the one-way valve stem is installed on the pressing shell and slides on the connection shell along with the pressing shell. A water outlet channel connected to the water storage cavity is provided on the one-way valve stem.

[0004] When the pressing shell is pressed, the annular plastic spring is deformed, and part of the one-way valve stem is inserted into the water outlet sleeve to block it. The liquid in the water storage chamber will flow from the water outlet channel to the nozzle under the action of pressure and spray out. After that, the pressing shell and the one-way valve stem will automatically reset under the action of the annular plastic spring, and the liquid inside the bottle will also flow from the water outlet sleeve into the water storage chamber under the action of pressure. Among them, the spray pump can be completely sprayed with a single press. When the user lets go and does not press the pressing head shell, the spray pump will not spray.

[0005] Regarding the above-mentioned related technologies, when the pressing shell is pressed, the one-way valve stem slides downward along the vertical direction with the pressing shell to realize the spraying of liquid. Among them, the sliding stroke of the one-way valve stem has an upper limit value (that is, it cannot slide further after being pressed to a certain extent). When the one-way valve stem is pressed to a value close to the maximum sliding stroke, the amount of liquid in the water storage chamber is very small, and the water outlet channel is long. This part of the liquid cannot be atomized, resulting in the liquid coming out in the form of small droplets after being pressed, causing liquid waste, so it needs to be improved. Utility Model Content

[0006] In order to reduce the possibility of liquid being sprayed out in the form of droplets and reduce the waste of liquid, the present application provides a spray pump.

[0007] The present application provides a spray pump adopting the following technical solution:

[0008] A spray pump, comprising a connecting shell, a liquid pumping assembly and an atomizing nozzle, wherein the connecting shell is detachably connected to a bottle body, and the connecting shell is used to seal the opening of the bottle body; a connecting groove is provided on the connecting shell, and the connecting groove is used to connect to the opening of the bottle body, and the liquid pumping assembly is arranged through the bottom surface of the connecting groove;

[0009] The liquid extraction component is connected to the connecting shell, and the liquid extraction component is used to extract the liquid inside the bottle body; the atomizing nozzle is connected to the liquid extraction component, and the atomizing nozzle is used to atomize and spray the liquid extracted by the liquid extraction component;

[0010] The liquid pumping assembly includes a liquid storage cylinder and a piston, wherein the liquid storage cylinder is connected to the connecting shell, the liquid storage cylinder is used to extend into the bottle body, and is provided with a liquid storage cavity, and the liquid storage cavity is used to store liquid; the piston is connected to the atomizing nozzle, and is movably arranged in the liquid storage cavity;

[0011] Wherein, a clearance groove is provided on the inner wall of the liquid storage cylinder, and a reflux hole is provided on the liquid storage cylinder. The reflux hole is located above the clearance groove and communicated with the liquid storage cavity.

[0012] By adopting the above technical solution, the connecting shell is connected to the bottle body, and the liquid storage cylinder will extend into the interior of the bottle body. When the spray pump is needed to atomize the liquid in the bottle, the piston is controlled to move vertically downward in the liquid storage cylinder, so that part of the air in the liquid storage chamber is squeezed out. Under the action of the pressure difference, the liquid in the liquid storage chamber moves in the direction close to the atomizing nozzle, and is finally atomized and sprayed by the atomizing nozzle. When the distance moved by the piston is close to the maximum range, a small amount of liquid in the liquid storage chamber flows upward from the concession groove between the piston and the inner wall of the liquid storage cylinder, and then flows out from the reflux hole and flows back into the bottle, so that this small amount of liquid will not flow out from the atomizing nozzle, thereby reducing the possibility of liquid being sprayed in the form of droplets and reducing the waste of liquid.

[0013] Preferably, a plurality of the give-way grooves and the reflux holes are provided, and the give-way grooves and the reflux holes are distributed at intervals along the circumference of the liquid storage cylinder.

[0014] By adopting the above technical solution, a plurality of make way grooves make way together, so that the liquid in the liquid storage cavity can more easily flow upward from the inner wall of the liquid storage cylinder to the reflux hole.

[0015] Preferably, the pumping assembly further comprises a spring block, a movable block and a valve core, wherein the spring block is arranged on the connecting shell, a receiving cavity is arranged in the spring block, the movable block is movably arranged in the receiving cavity and connected to the spring block; the atomizing nozzle is connected to the movable block, and the atomizing nozzle is used to control the movement of the movable block; the movable block is connected to the piston, and the movable block is used to control the movement of the piston;

[0016] The piston is provided with a liquid flow channel, one end of which is connected to the liquid storage chamber, and the other end of which is connected to the atomizing nozzle; the valve core is located between the movable block and the piston, and the valve core is used to connect the piston and the movable block.

[0017] By adopting the above technical solution, when it is necessary to use a spray pump to atomize the liquid in the bottle, the atomizing nozzle is squeezed to make the movable block move vertically downward in the accommodating chamber; while the movable block moves, it drives the spring block to move together, so that the spring block undergoes elastic deformation. In addition, while the movable block moves, it also drives the piston to move in the liquid storage chamber. Under the action of pressure, the liquid in the liquid storage chamber passes through the piston, valve core and movable block in sequence along the liquid flow channel, and is finally atomized and sprayed out from the atomizing nozzle. When the squeezing force on the atomizing nozzle is removed, the spring block is transformed from a compressed state to a natural state, and the elastic potential energy released can drive the movable block and the piston to move in a direction away from the bottle, thereby allowing the atomizing pump to return to its original state.

[0018] Preferably, an exhaust groove is further provided on the inner wall of the liquid storage cylinder, and the exhaust groove is located above the reflux hole and is arranged along the circumference of the liquid storage cylinder.

[0019] By adopting the above technical solution, when the atomizing nozzle drives the piston to move vertically downward, the air pressure in the cavity between the piston and the liquid storage cylinder increases. When the exhaust groove is not covered by the outer wall of the piston, the exhaust groove allows the liquid storage cylinder and the inside of the bottle to be connected, and the gas can be leaked from the exhaust groove to achieve deflation, so as to reduce the air pressure in the cavity, thereby facilitating the piston to continue to move in the direction close to the bottle.

[0020] Preferably, the atomizing nozzle comprises a pressure shell and a spray head, the pressure shell is movably arranged on the connecting shell, and the pressure shell is connected to the piston; the spray head is arranged on the pressure shell, and the spray head is used to atomize and spray the extracted liquid.

[0021] By adopting the above technical solution, when the spray pump is in use, an extrusion force is applied to the pressure shell, thereby controlling the liquid extraction component to extract liquid, and after the liquid flows out, the spray head performs atomization processing to achieve a spray effect.

[0022] Preferably, the liquid extraction assembly also includes a one-way valve and a liquid extraction tube, the one-way valve is arranged at one end of the liquid storage cylinder away from the atomizing nozzle and is located between the piston and the liquid extraction tube; the liquid extraction tube is located on one side of the notch of the connecting groove and is detachably connected to the liquid storage cylinder, and the liquid extraction tube is used to extract the liquid inside the bottle body.

[0023] By adopting the above technical solution, the liquid extraction tube extends into the bottle to extract the liquid in the bottle into the liquid storage cavity, while the one-way valve has a one-way flow function to limit the liquid in the liquid storage cylinder from flowing back into the bottle.

[0024] Preferably, it further comprises a protective cover, which is detachably arranged on the outer surface of the connecting shell, the atomizing nozzle is arranged in the protective cover, and the protective cover is provided with an air hole communicating with the outside.

[0025] By adopting the above technical solution, when the spray pump is not in use, the atomizing nozzle is located in the protective cover, which reduces the possibility of accidental squeezing of the atomizing nozzle. When the spray pump needs to be used, the protective cover can be removed from the atomizing nozzle. The arrangement of the air holes makes the internal air pressure equal to the external air pressure when the protective cover is placed on the connecting shell, so that it is convenient for the user to remove the protective cover.

[0026] Preferably, the connecting shell, the liquid extraction assembly and the atomizing nozzle are all made of plastic material.

[0027] By adopting the above technical solution, the spray pump made of plastic material has the characteristics of light weight and easy to carry, which is convenient for subsequent disposal of the product after use.

[0028] Preferably, the piston is a split structure.

[0029] By adopting the above technical solution, the split piston mechanism can sense the existence of the force applied by itself during the process of transmitting thrust, so that people can get better feedback after applying pressing force.

[0030] Preferably, the connecting shell is also provided with a plurality of protrusions, each of which is located in the accommodating cavity and is distributed at intervals along the circumference, and the protrusions are used to limit the stroke of the spring block, so that the protrusions can reduce the impact force generated when the spring block is pressed and increase the resilience of the spring block.

[0031] By adopting the above technical solution, the spring block will move downward and be compressed during the squeezing process. Since the total travel of the spring block is relatively large, the user needs to overcome a large elastic force to compress the spring block. Now, by adding a number of protrusions, when the spring block is compressed to abut against the protrusions, it cannot move further downward. The protrusions can reduce the travel of the spring block, reduce the force applied by the user to overcome the elastic potential energy, and reduce the impact force generated when the spring block is pressed, while increasing the resilience of the spring block.

[0032] Preferably, a pressure-bearing block is provided between the valve core and the piston, and a convex point is integrally connected to the lower end of the pressure-bearing block, and the convex point is used to press against the piston.

[0033] By adopting the above technical solution, the valve core will be squeezed and contacted with the piston during the downward pressing process, and the valve core and the piston will be in surface contact. The reaction force of the surface contact will be relatively large, giving the user a relatively heavy pressing feeling. Now, by adding a pressure-bearing block and setting a number of convex points on the pressure-bearing block, the surface contact is changed to point contact, and the user can feel lighter and better when pressing the valve core and the piston downward.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] (1) By providing a clearance groove and a reflux hole in the liquid storage cylinder, when the piston moves close to the maximum range, a small amount of liquid in the liquid storage chamber flows upward from the clearance groove between the piston and the inner wall of the liquid storage cylinder, then flows out from the reflux hole and flows back into the bottle, thereby reducing the possibility of liquid being sprayed out in the form of droplets and reducing liquid waste;

[0036] (2) By providing an exhaust groove, the exhaust groove balances the air pressure on both sides of the piston when it moves, thereby improving the smoothness of the piston movement;

[0037] (3) By setting a protective cover, the protective cover reduces the occurrence of accidental squeezing and makes the spray pump more stable during storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the structure of a spray pump in one embodiment of the present application;

[0039] Figure 2 is a cross-sectional schematic diagram of a spray pump AA in one embodiment of the present application;

[0040] Figure 3 It is a schematic diagram of the structure of the spray pump in one embodiment of the present application in which the connecting shell is omitted;

[0041] Figure 4 is a schematic structural diagram of a spray pump in another embodiment of the present application;

[0042] Figure 5 is a cross-sectional schematic diagram of a spray pump BB in yet another embodiment of the present application;

[0043] Figure 6 yes Figure 5 Enlarged schematic diagram of local part A.

[0044] Figure numerals: 1. connecting shell; 2. liquid extraction assembly; 21. liquid storage cylinder; 22. piston; 23. spring block; 24. movable block; 25. valve core; 26. one-way valve; 27. liquid extraction tube; 3. atomizing nozzle; 31. pressure shell; 32. spray head; 4. connecting groove; 5. liquid storage chamber; 6. accommodating chamber; 7. liquid flow channel; 8. give way groove; 9. reflux hole; 10. exhaust groove; 11. cavity; 12. protective cover; 13. bump; 14. pressure block; 15. bump. DETAILED DESCRIPTION

[0045] The technical solution of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described here.

[0046] In the description of the present application, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0049] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples shown in the present application.

[0050] The present application embodiment discloses a spray pump. Figure 1The spray pump comprises a connecting shell 1, a liquid extraction component 2 and an atomizing nozzle 3. The connecting shell 1 is detachably connected to the bottle body, and the connecting shell 1 is used to seal the opening of the bottle body. A connecting groove 4 is provided on the connecting shell 1, and the cross section of the connecting groove 4 is circular. An internal thread is fixedly connected to the inner wall of the connecting groove 4, so that the connecting groove 4 is threadedly connected to the opening of the bottle body, so that the connecting shell 1 and the bottle body can be detached.

[0051] The liquid extraction component 2 is arranged through the bottom surface of the connection groove 4, so that the liquid extraction component 2 is connected to the connection shell 1, and the liquid extraction component 2 is used to extract the liquid inside the bottle body. The atomizing nozzle 3 is connected to the liquid extraction component 2, and the atomizing nozzle 3 is used to atomize and spray the liquid extracted by the liquid extraction component 2.

[0052] Specifically, refer to Figure 2 The liquid pumping assembly 2 includes a liquid storage cylinder 21 and a piston 22. The liquid storage cylinder 21 is fixedly connected to the connecting shell 1. The liquid storage cylinder 21 is used to extend into the bottle body and has a liquid storage chamber 5. The liquid storage chamber 5 is used to store liquid. The piston 22 is movably arranged in the liquid storage chamber 5, and the piston 22 moves up and down in the vertical direction. The piston 22 in this embodiment is a split structure. When the split piston 22 mechanism transmits thrust, the person can feel the existence of the force applied by himself, so that the person can get better tactile feedback after applying the pressing force.

[0053] The pumping assembly 2 further includes a spring block 23, a movable block 24 and a valve core 25. The spring block 23 is mounted on the connection shell 1 and is located directly above the connection groove 4. The movable block 24 and the valve core 25 are both located above the piston 22. The movable block 24, the valve core 25 and the piston 22 are connected in sequence from top to bottom along the vertical direction. The spring block 23 has an accommodating chamber 6 inside. The movable block 24 is movably arranged in the accommodating chamber 6 and one end is connected to the spring block 23. The movable block 24 moves along the vertical direction. The atomizing nozzle 3 is connected to the movable block 24, and the atomizing nozzle 3 is used to control the movement of the movable block 24. The movable block 24 is also connected to the piston 22, and the movable block 24 is used to control the movement of the piston 22 in the liquid storage cylinder 21. The valve core 25 is located between the movable block 24 and the piston 22, and the valve core 25 is used to connect the piston 22 and the movable block 24. A liquid flow channel 7 is provided on the piston 22 , one end of the liquid flow channel 7 is communicated with the liquid storage chamber 5 , and the other end of the liquid flow channel 7 is communicated with the atomizing nozzle 3 through the valve core 25 and the movable block 24 .

[0054] The liquid storage cylinder 21 is also provided with a clearance groove 8 and a reflux hole 9, respectively. The clearance groove 8 is located on the inner wall of the liquid storage cylinder 21 and at the end of the liquid storage cylinder 21 away from the connecting shell 1; the reflux hole 9 is located above the clearance groove 8. There are a plurality of clearance grooves 8 and reflux holes 9, and each of the clearance grooves 8 and each of the reflux holes 9 are distributed at intervals along the circumference of the liquid storage cylinder 21.

[0055] When the spray pump is needed to atomize the liquid in the bottle, the atomizing nozzle 3 is squeezed to make the movable block 24 move vertically downward in the accommodating chamber 6; the movable block 24 drives the spring block 23 to move together while moving, so that the spring block 23 undergoes elastic deformation. In addition, the movable block 24 also drives the piston 22 to move vertically downward in the liquid storage chamber 5 while moving, so that part of the air in the liquid storage chamber 5 is squeezed out; under the action of the internal and external pressure difference, the liquid in the liquid storage chamber 5 passes through the piston 22, the valve core 25 and the movable block 24 in sequence along the liquid flow channel 7, and is finally atomized and sprayed out from the atomizing nozzle 3. When the squeezing force on the atomizing nozzle 3 is removed, the spring block 23 is transformed from a compressed state to a natural state, and the elastic potential energy released can drive the movable block 24 and the piston 22 to move in a direction away from the bottle, so that the atomizing pump can be restored to its original state.

[0056] When the distance moved by the piston 22 approaches the maximum range, a small amount of liquid in the liquid storage chamber 5 flows upward from the concession groove 8 between the piston 22 and the inner wall of the liquid storage cylinder 21, then flows out from the reflux hole 9 and flows back into the bottle, so that this small amount of liquid will not flow out from the atomizing nozzle 3, thereby reducing the possibility of liquid being sprayed in the form of droplets and reducing liquid waste. The multiple concession grooves 8 make way together, so that the liquid in the liquid storage chamber 5 can more easily flow upward from the inner wall of the liquid storage cylinder 21 to the reflux hole 9, and the liquid then flows back into the bottle from each reflux hole 9.

[0057] Combination Figure 3 , wherein an exhaust groove 10 is also provided on the side wall of the liquid storage cylinder 21, and the exhaust groove 10 is arranged along the peripheral side of the liquid storage cylinder 21 and is located above the reflux hole 9, so that the exhaust groove 10 is in an arc shape; a cavity 11 is retained between the piston 22 and the liquid storage cylinder 21, and the exhaust groove 10 is connected to the cavity 11. Among them, there are a plurality of exhaust grooves 10 in this embodiment, and each exhaust groove 10 is located in the same plane and is distributed at intervals. When the atomizing nozzle 3 drives the piston 22 to move vertically downward, the air pressure of the cavity 11 between the piston 22 and the liquid storage cylinder 21 increases. When the exhaust groove 10 is not covered by the outer side wall of the piston 22, the exhaust groove 10 allows the liquid storage cylinder 21 to communicate with the inside of the bottle, and the gas can be discharged from the exhaust groove 10 to achieve deflation, so as to reduce the air pressure in the cavity 11, thereby facilitating the piston 22 to continue to move in the direction close to the bottle, and improving the smoothness of the piston 22 when moving.

[0058] The atomizing nozzle 3 includes a pressure shell 31 and a spray head 32. The pressure shell 31 is movably arranged on the connecting shell 1 and connected to the upper end of the movable block 24. The pressure shell 31 is connected to the movable block 24. The spray head 32 is installed in the pressure shell 31. The spray head 32 is used to atomize and spray the extracted liquid. When the spray pump is in use, an extrusion force is applied to the pressure shell 31, thereby controlling the movable block 24 and the piston 22 to move, so that the liquid in the liquid storage chamber 5 flows out. Finally, the spray head 32 atomizes the liquid to achieve a spray effect.

[0059] In addition, the liquid extraction assembly 2 also includes a one-way valve 26 and a liquid extraction tube 27. The one-way valve 26 is installed at one end of the liquid storage cylinder 21 away from the atomizing nozzle 3 and is located between the piston 22 and the liquid extraction tube 27. The liquid extraction tube 27 is located on one side of the notch of the connecting groove 4 and is detachably connected to the liquid storage cylinder 21. The connection between the liquid extraction tube 27 and the liquid storage cylinder 21 is plug-in or snap-on. The liquid extraction tube 27 is used to extract the liquid inside the bottle. The liquid extraction tube 27 extends into the interior of the bottle so as to extract the liquid inside the bottle into the liquid storage cavity 5. The one-way valve 26 has the function of one-way flow, which limits the liquid in the liquid storage cylinder 21 from flowing back into the bottle.

[0060] According to some embodiments of the present application, optionally, please refer to Figure 4 . A protective cover 12 can also be detachably mounted on the connecting shell 1. The protective cover 12 is provided with an opening and is provided on the atomizing nozzle 3 to protect the atomizing nozzle 3. An air hole communicating with the outside is also provided on the side wall of the protective cover 12. When the spray pump is not in use, the atomizing nozzle 3 is located in the protective cover 12 to reduce the possibility of accidental squeezing of the atomizing nozzle 3. When the spray pump needs to be used, the protective cover 12 can be removed from the atomizing nozzle 3. The provision of the air hole ensures that the internal air pressure is equal to the external air pressure when the protective cover 12 is provided on the connecting shell 1, thereby facilitating the user to remove the protective cover 12.

[0061] According to some embodiments of the present application, optionally, the connecting shell 1, the liquid extraction component 2 and the atomizing nozzle 3 are all made of plastic material, and the plastic material may be but is not limited to PET and HDPE. The spray pump made of plastic material has the characteristics of light weight and easy to carry, and it is also convenient for the subsequent recycling of the product after use.

[0062] According to some embodiments of the present application, optionally, please refer to Figure 5 and Figure 6. A plurality of protrusions 13 are also fixedly connected to the connecting shell 1. Each of the protrusions 13 is located in the accommodating cavity 6 and is spaced apart along the circumference of the connecting shell 1. The protrusions 13 are located on the moving path of the spring block 23 and are used to limit the stroke of the spring block 23. During the use of the spray pump, the spring block 23 is squeezed and moves downward and is compressed. Since the total stroke that the spring block 23 can move is relatively large, the user needs to overcome a large elastic force to compress the spring block 23. Now, by adding a plurality of protrusions 13, the protrusion 13 itself has a certain length. When the spring block 23 is compressed to abut against the protrusion 13, it cannot move further downward. The protrusion 13 can reduce the stroke of the spring block 23, reduce the force applied by the user to overcome the elastic potential energy, and reduce the impact force generated when the spring block 23 is pressed, while increasing the resilience of the spring block 23.

[0063] In addition, a pressure block 14 is installed between the valve core 25 and the piston 22, and the lower end of the pressure block 14 is integrally connected with a convex block 13, and the convex point 15 contacts and presses against the upper end of the piston 22. Among them, there are a plurality of convex points 15, and each convex point 15 is distributed at intervals along the circumference of the piston 22. Since the valve core 25 will be squeezed and contacted with the piston 22 during the downward pressing process, and the valve core 25 and the piston 22 are in surface contact, the reaction force of the surface contact will be relatively large, resulting in a heavier pressing feel for the user. Now, by adding a pressure block 14 and setting a plurality of convex points 15 on the pressure block 14, the surface contact is changed to point contact, and the user can have a lighter and better feel when pressing the valve core 25 and the piston 22 downward.

[0064] The implementation principle of a spray pump in the embodiment of the present application is as follows: when the spray pump is needed to atomize the liquid in the bottle, a downward squeezing force is applied to the pressure-applying housing 31, so that the movable block 24 moves vertically downward in the accommodating chamber 6. On the one hand, the movable block 24 drives the spring block 23 to undergo elastic deformation, and on the other hand, the movable block 24 drives the piston 22 to move in the liquid storage chamber 5, and part of the air in the liquid storage chamber 5 is squeezed out. Under the action of the internal and external pressure difference, the liquid in the liquid storage chamber 5 passes through the piston 22, the valve core 25 and the movable block 24 in sequence along the liquid flow channel 7, and is finally atomized and sprayed out from the atomizing nozzle 3.

[0065] When the distance moved by the piston 22 approaches the maximum range, a small amount of liquid in the liquid storage chamber 5 flows upward from the concession groove 8 between the piston 22 and the inner wall of the liquid storage cylinder 21, then flows out from the reflux hole 9 and flows back into the bottle, so that this small amount of liquid will not flow out from the atomizing nozzle 3, thereby reducing the possibility of liquid being sprayed in the form of droplets and reducing the waste of liquid.

[0066] When the force acting on the pressure housing 31 is removed, the spring block 23 drives the movable block 24 and the piston 22 to return to their original state, so that the atomizing pump returns to its original state.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spray pump, characterized in that: The invention comprises a connecting shell (1), a liquid extraction component (2) and an atomizing nozzle (3); the connecting shell (1) is detachably connected to the bottle body, and the connecting shell (1) is used to seal the opening of the bottle body; a connecting groove (4) is provided on the connecting shell (1), and the connecting groove (4) is used to connect to the opening of the bottle body; the liquid extraction component (2) is arranged through the bottom surface of the connecting groove (4); The liquid extraction component (2) is connected to the connecting shell (1), and the liquid extraction component (2) is used to extract liquid from the bottle body; the atomizing nozzle (3) is connected to the liquid extraction component (2), and the atomizing nozzle (3) is used to atomize and spray the liquid extracted by the liquid extraction component (2); The liquid extraction assembly (2) comprises a liquid storage cylinder (21) and a piston (22); the liquid storage cylinder (21) is connected to the connecting shell (1); the liquid storage cylinder (21) is used to extend into the interior of the bottle body and is provided with a liquid storage cavity (5); the liquid storage cavity (5) is used to store liquid; the piston (22) is connected to the atomizing nozzle (3) and is movably arranged in the liquid storage cavity (5); A clearance groove (8) is provided on the inner wall of the liquid storage cylinder (21), and a reflux hole (9) is provided on the liquid storage cylinder (21). The reflux hole (9) is located above the clearance groove (8) and communicates with the liquid storage cavity (5).

2. A spray pump according to claim 1, characterized in that: A plurality of the clearance grooves (8) and the reflux holes (9) are provided, and the clearance grooves (8) and the reflux holes (9) are distributed at intervals along the circumference of the liquid storage cylinder (21).

3. A spray pump according to claim 1, characterized in that: The liquid pumping assembly (2) further comprises a spring block (23), a movable block (24) and a valve core (25); the spring block (23) is arranged on the connecting shell (1); a receiving chamber (6) is arranged in the spring block (23); the movable block (24) is movably arranged in the receiving chamber (6) and connected to the spring block (23); the atomizing nozzle (3) is connected to the movable block (24); the atomizing nozzle (3) is used to control the movement of the movable block (24); the movable block (24) is connected to the piston (22); the movable block (24) is used to control the movement of the piston (22); The piston (22) is provided with a liquid flow channel (7), one end of the liquid flow channel (7) is in communication with the liquid storage chamber (5), and the other end is in communication with the atomizing nozzle (3); the valve core (25) is located between the movable block (24) and the piston (22), and the valve core (25) is used to connect the piston (22) and the movable block (24).

4. A spray pump according to claim 1, characterized in that: An exhaust groove (10) is also provided on the inner wall of the liquid storage cylinder (21), and the exhaust groove (10) is located above the reflux hole (9) and is arranged along the circumference of the liquid storage cylinder (21).

5. A spray pump according to claim 1, characterized in that: The atomizing nozzle (3) comprises a pressure-applying shell (31) and a spray head (32); the pressure-applying shell (31) is movably arranged on the connecting shell (1); the pressure-applying shell (31) is connected to the piston (22); the spray head (32) is arranged on the pressure-applying shell (31); and the spray head (32) is used to atomize and spray the extracted liquid.

6. A spray pump according to claim 1, characterized in that: The liquid extraction assembly (2) further comprises a one-way valve (26) and a liquid extraction tube (27); the one-way valve (26) is arranged at one end of the liquid storage cylinder (21) away from the atomizing nozzle (3) and is located between the piston (22) and the liquid extraction tube (27); the liquid extraction tube (27) is located at one side of the notch of the connecting groove (4) and is detachably connected to the liquid storage cylinder (21); the liquid extraction tube (27) is used to extract liquid from the interior of the bottle.

7. A spray pump according to claim 1, characterized in that: It also comprises a protective cover (12), the protective cover (12) being detachably arranged on the outer surface of the connecting shell (1), the atomizing nozzle (3) being arranged inside the protective cover (12), and the protective cover (12) being provided with an air hole communicating with the outside.

8. A spray pump according to claim 3, characterized in that: The piston (22) is of a split structure.

9. A spray pump according to claim 3, characterized in that: The connection shell (1) is further provided with a plurality of protrusions (13), each of the protrusions (13) being located in the accommodating cavity (6) and spaced apart along the circumference, the protrusions (13) being used to limit the travel of the spring block (23), so that the protrusions (13) can reduce the impact force generated when the spring block (23) is pressed and increase the resilience of the spring block (23).

10. A spray pump according to claim 3, characterized in that: A pressure-bearing block (14) is provided between the valve core (25) and the piston (22), and a convex point (15) is integrally connected to the lower end of the pressure-bearing block (14), and the convex point (15) is used to press against the piston (22).

Images