Pressing vacuum bottle convenient for storing and releasing essence or emulsion

Abstract

The utility model relates to a pressing vacuum bottle convenient for storing and releasing essence or emulsion, which comprises a protective cover, a bottle body, a bottle bottom and a liquid outlet part, a piston is arranged in the bottle body and divides the inside of the bottle body into an upper cavity and a lower cavity, a liquid storage cavity is arranged above the piston, an air cavity is arranged below the piston, and the liquid storage cavity is communicated with the air cavity. And the liquid outlet part is detachably connected with the bottle body. According to the utility model, the problems of air entering, essence or emulsion oxidation, difficult dosage control, residue waste and the like of the traditional pressing type emulsion bottle are solved, meanwhile, the mechanical structure is simplified, the production cost is reduced, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic bottle technology, and in particular to a press-type vacuum bottle that facilitates the storage and release of essence or lotion. Background Technology

[0002] As people's living standards improve, skincare products are becoming increasingly popular. As a common skincare product, the packaging design of serums and lotions is crucial for product preservation and user experience. Serums and lotions, being common liquid skincare products, typically require airtight storage to prevent spoilage and oxidation.

[0003] Currently, the most common emulsion packaging on the market includes traditional squeeze emulsion bottles and ordinary press emulsion bottles. Traditional squeeze emulsion bottles are easy to use and have a simple structure because the bottle body is deformed by manually squeezing it. Ordinary press emulsion bottles use a pump head to drive an internal piston or pump core assembly to draw the emulsion out of the bottle and squeeze it out through the outlet of the pump head, thus achieving precise emulsion output.

[0004] The existing technical solutions mentioned above have the following drawbacks: Traditional squeeze-type emulsion bottles are difficult to control the dosage, and users find it difficult to accurately control the amount of emulsion squeezed out during the squeezing process, which easily leads to waste; compared with traditional squeeze-type emulsion bottles, ordinary press-type emulsion bottles have solved the dosage control problem to a certain extent, but the problem of emulsion residue still exists. Since the straw in ordinary press-type emulsion bottles generally extends to the bottom of the bottle, the emulsion in the bottle cannot be completely discharged, and some emulsion remains at the bottom of the bottle, which cannot be fully utilized; the sealing is insufficient, and air can easily enter the bottle through the pump head or bottle mouth, affecting the preservation effect of the emulsion. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a press-type vacuum bottle that facilitates the storage and release of essences or lotions. This solves the problems of air ingress, essence or lotion oxidation, dosage control, and residue waste that exist in traditional press-type lotion bottles. At the same time, it simplifies the mechanical structure, reduces production costs, and improves the user experience.

[0006] The above-mentioned utility model objective is achieved through the following technical solution:

[0007] A press-type vacuum bottle for easy storage and release of essence or emulsion includes a protective cap, a bottle body, a bottle bottom, and a liquid dispensing part. A piston is installed inside the bottle body, which divides the interior of the bottle body into upper and lower chambers. The upper chamber is a liquid storage chamber, and the lower chamber is a gas chamber. The liquid dispensing part is detachably connected to the bottle body.

[0008] The piston initially rests at the bottom of the bottle. When the essence or lotion is squeezed out, the volume of the liquid storage chamber decreases, while the volume of the air chamber increases simultaneously, creating negative pressure. Under the influence of external atmospheric pressure, the piston moves upward, filling the portion of the storage chamber that has decreased in volume, ensuring that no air ever enters the storage chamber.

[0009] The piston design effectively prevents air from entering the liquid storage chamber while ensuring smooth movement of the piston under atmospheric pressure, squeezing out the essence or lotion and avoiding the problem of essence or lotion residue and waste.

[0010] Furthermore, the piston includes a piston body and a connecting tube. The bottom end of the piston body is connected to one end of the connecting tube, and the other end of the connecting tube extends to the bottom of the bottle.

[0011] The piston body is cylindrical, with a flat, closed circular plane at its top. The piston body fits tightly against the inner wall of the bottle, creating a good seal. This ensures a good seal between the essence or liquid storage chamber above the piston and the air chamber below, preventing air from entering the liquid storage chamber and thus extending the shelf life of the essence or lotion. Furthermore, the piston is made of PE material, which not only meets the functional requirements of a press-type vacuum bottle but also provides good chemical stability, sealing performance, and environmental friendliness. The piston material is existing technology, and this invention does not involve any improvement to the material.

[0012] As part of the piston, the connecting tube can more effectively guide the formation of negative pressure, ensuring that the essence or lotion can be smoothly drawn into the liquid storage chamber above the piston; at the same time, it can also enhance the overall structural stability of the piston, ensuring that the piston moves more smoothly up and down inside the bottle, reducing shaking and deformation.

[0013] Furthermore, a first sealing ring is provided on the outer ring of the piston body, and the first sealing ring is tightly fitted to the inner wall of the bottle.

[0014] The sealing ring is made of rubber, which effectively fills the tiny gap between the piston body and the inner wall of the bottle, preventing leakage of essence, lotion or air. Even when there are slight irregularities or dimensional deviations between the parts, the sealing ring can maintain a stable sealing effect, improving the sealing performance of the press-type vacuum bottle.

[0015] Furthermore, the liquid dispensing section includes a pressing head, a pump core assembly, and a pump housing. The pressing head is detachably connected to the pump core assembly, which is encased in the pump housing. One end of the pump housing is detachably connected to a protective cap, and the other end of the pump housing is detachably connected to the bottle body.

[0016] The pump casing and the protective cover are detachably connected. A buckle protrusion is provided on the outer wall of the top of the pump casing, and a slot is provided on the inside of the protective cover. The two work together to achieve a tight connection between the pump casing and the protective cover.

[0017] The other end of the pump housing is detachably connected to the bottle body. A slot is provided on the inner wall of the pump housing, and a buckle protrusion is provided on the outer wall of the bottle body. The two work together to achieve a tight connection between the pump housing and the bottle body.

[0018] The pump housing covers the pump core assembly, providing physical protection against external impacts, dust, and liquid ingress, ensuring the normal operation of the pump core assembly. Furthermore, the snap-fit ​​connection between the pump housing, protective cap, and bottle body makes installation and removal of the pump housing simple and quick, reducing production costs and maintenance difficulty, and improving product maintainability. Similarly, the detachable design of the pump head and pump core assembly facilitates maintenance; the pump head can be disassembled separately for cleaning or replacement, avoiding cross-contamination.

[0019] Furthermore, the pump core assembly includes a piston seat, a piston rod, and a spring. The bottom end of the piston rod is movably inserted into the piston seat, the top end of the piston rod is movably connected to the pressing head, and the spring is sleeved on the piston rod.

[0020] The piston seat is a crucial foundational component of the pump core assembly. It provides space and support for the piston rod's movement and serves as the key channel for the entry and exit of serums or lotions. It is typically made of plastic materials with sufficient strength and corrosion resistance, such as polypropylene (PP) or polyoxymethylene (POM).

[0021] The spring is a key component for enabling the pump core assembly to reset. Its two ends contact the piston seat and the pressing head, respectively, and it fits onto the piston rod, providing an upward elastic force. When the pressing head is pressed, the spring is compressed; when the pressing head is released, the spring returns to its original shape, moving the piston rod upward and returning the pump core assembly to its initial position. The spring must be installed with its axis aligned with the piston rod's axis to ensure that the spring applies a uniform elastic force, allowing the piston rod to move smoothly up and down.

[0022] Through the rational design and coordination of the above-mentioned pump core component technical features, the pump core component can achieve efficient and stable essence or emulsion intake and dispensing functions, providing a reliable guarantee for the normal use of the press vacuum bottle.

[0023] Furthermore, the piston seat has a liquid inlet at the bottom and a liquid outlet at the top.

[0024] The inlet is typically circular to allow the serum or lotion to enter the piston seat with minimal resistance. The inner wall of the inlet is usually smoothed, for example, by polishing, to reduce surface roughness. For serums or lotions with higher viscosity, the diameter of the inlet is appropriately increased to ensure sufficient flow; for serums or lotions with lower viscosity, the diameter of the inlet can be relatively smaller.

[0025] The shape of the outlet is mostly circular, and the size matches the inlet. The inner wall of the outlet is also smoothed to reduce the resistance of the essence or lotion. The inner wall of the outlet is also designed with a certain taper or a special surface coating so that the essence or lotion can flow out quickly and cleanly.

[0026] The inlet is located at the bottom of the piston seat, directly connecting to the liquid storage chamber, shortening the liquid absorption path. The outlet is located at the top of the piston seat, with its tilt direction aligned with the piston rod's movement direction to prevent the essence or lotion from flowing back into the storage chamber during pressing. The hollow piston rod serves as the main outlet channel, increasing the fluid cross-sectional area and improving the dispensing speed. The piston seat and hollow piston rod form a fluid channel design. The fluid path of the essence or lotion is as follows: the essence or lotion flows from the liquid storage chamber to the inlet at the bottom of the piston seat, then into the piston seat, then through the outlet at the top of the piston seat to the hollow piston rod, and finally is discharged through the pressing head.

[0027] By designing the inlet and outlet, the utilization rate of essences or lotions is improved, hygiene is ensured, and the stability of the liquid output is optimized.

[0028] Furthermore, an inlet check valve is installed inside the liquid inlet, and an outlet check valve is installed at the liquid outlet.

[0029] The inlet check valve can employ a steel ball spring structure to control the flow of essence or emulsion into the piston base, preventing backflow. Normally, it is closed. When the piston rod is pressed, the air inside the piston seat is compressed, increasing the pressure and forcing the steel ball back into the valve seat. This closes the inlet check valve, preventing essence or emulsion from flowing into the piston seat and avoiding backflow of squeezed-out essence or emulsion into the storage chamber. When the piston is released, the pressure in the piston seat decreases, the steel ball is lifted, the inlet valve opens, and essence or emulsion flows from the storage chamber into the piston seat through the inlet, preparing for the next press.

[0030] The one-way valve at the outlet can adopt a duckbill valve structure. The duckbill valve is made of elastic material (such as silicone). The valve body has a symmetrical duckbill-shaped structure (lips on both sides and a channel in the middle). It is normally in a sealed state. When pressed, it opens, the pressure inside the piston seat increases, and the internal pressure pushes the lips to open outward, opening the outlet and allowing the essence or lotion to flow out through the piston rod channel. When released, it closes, the pressure is released, and the elasticity of the material allows the lips to return to their original position, restoring the sealed state and preventing air from entering the bottle and contaminating the essence or lotion.

[0031] The dual one-way valves work together, with the inlet valve and outlet valve opening and closing alternately to form a one-way liquid passage, ensuring that the essence or lotion flows only along the path of "storage chamber → inlet → piston seat → outlet → piston rod → press head → outside".

[0032] By using a two-way one-way valve design at the inlet and outlet, bidirectional flow control is achieved to prevent backflow of liquid and to achieve a dynamic balance between the one-way flow of essence or emulsion and the vacuum environment. This solves the three major pain points of traditional press bottles: easy air contamination, residue waste, and poor dispensing.

[0033] Furthermore, a second sealing ring is provided on the outer wall of the piston seat bottom, and the second sealing ring is tightly fitted to the inner wall of the bottle.

[0034] The second sealing ring is made of rubber, which effectively fills the tiny gap between the piston seat and the inner wall of the bottle. The sealing ring and the one-way valve at the inlet provide a double seal to prevent leakage of essence, lotion, or air. When the piston rod returns to its original position, the sealing ring and the one-way valve at the inlet work together to quickly create a vacuum.

[0035] In summary, this utility model has at least one of the following beneficial technical effects:

[0036] 1. This utility model discloses a press-type vacuum bottle that facilitates the storage and release of essence or emulsion. The bottle body is divided into a liquid storage chamber and an air chamber by a piston. The piston moves smoothly under atmospheric pressure to squeeze out essence or emulsion, thus avoiding the problem of essence or emulsion residue and waste.

[0037] 2. This utility model discloses a press-type vacuum bottle that facilitates the storage and release of essence or emulsion, which achieves control over the amount of essence or emulsion used through the design of the pump core assembly.

[0038] 3. This utility model discloses a press-type vacuum bottle that facilitates the storage and release of essence or emulsion. Through the design of the inlet, outlet and two one-way valves, it solves the problems of easy air contamination, residue waste and poor liquid dispensing of traditional press-type bottles. Attached Figure Description

[0039] Figure 1 This is the front view of this embodiment.

[0040] Figure 2 This is a cross-sectional view of Embodiment 1.

[0041] Reference numerals: 1. Protective cap; 2. Bottle body; 3. Bottle bottom; 4. Piston; 41. Piston body; 42. Connecting pipe; 43. First sealing ring; 5. Discharge section; 51. Pressing head; 52. Pump core assembly; 521. Piston seat; 5211. Inlet; 5212. Outlet; 522. Piston rod; 523. Spring; 524. Inlet check valve; 525. Outlet check valve; 53. Pump housing; 6. Second sealing ring. Detailed Implementation

[0042] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0045] Reference Figure 1 and Figure 2 The present invention discloses a press-type vacuum bottle for easy storage and release of essence or emulsion, comprising a protective cap 1, a bottle body 2, a bottle bottom 3, and a liquid dispensing part 5.

[0046] Inside the bottle body 2 is a piston 4, which divides the interior of the bottle body 2 into upper and lower chambers. The upper chamber of the piston 4 is a liquid storage chamber for storing serum or lotion; the lower chamber of the piston 4 is an air chamber.

[0047] The piston 4 includes a piston body 41 and a connecting tube 42. The bottom end of the piston body 41 is connected to one end of the connecting tube 42, and the other end of the connecting tube 42 extends to the bottom of the bottle 3.

[0048] The piston body 41 has a first sealing ring 43 on its outer ring. The first sealing ring 43 fits tightly against the inner wall of the bottle body 2 to prevent the essence or lotion from leaking and to prevent air from entering the liquid storage chamber.

[0049] The liquid outlet section 5 consists of a pressing head 51, a pump core assembly 52, and a pump housing 53. The pressing head 51 and the pump core assembly 52 are detachably connected, which facilitates cleaning or replacement of the pressing head 51.

[0050] The pump core assembly 52 is encased in the pump housing 53, which serves to protect and support the pump core assembly 52. ​​One end of the pump housing 53 is detachably connected to the protective cover 1, which prevents dust and other impurities from entering the liquid outlet section 5 when not in use. The other end of the pump housing 53 is detachably connected to the bottle body 2, facilitating maintenance and replacement of the entire liquid outlet section 5.

[0051] The pump core assembly 52 includes a piston seat 521, a piston rod 522, and a spring 523. The bottom end of the piston rod 522 is movably inserted into the piston seat 521, and the top end of the piston rod 522 is movably connected to the pressing head. The spring 523 is sleeved on the piston rod 522. When the pressing head is pressed, the piston rod 522 moves downward within the piston seat 521 and compresses the spring 523; when the pressing head is released, the spring 523 returns to its original position, causing the piston rod 522 to move upward.

[0052] The piston seat 521 has a liquid inlet 5211 at the bottom and a liquid outlet 5212 at the top. A one-way valve 524 is installed inside the liquid inlet 5211, and a one-way valve 525 is installed at the liquid outlet 5212. The one-way valve 524 ensures that the essence or lotion can only enter the piston seat 521 from the liquid storage chamber, and the one-way valve 525 ensures that the essence or lotion can only flow out from the piston seat 521 through the liquid outlet 5212, preventing backflow of the essence or lotion and the entry of air.

[0053] A second sealing ring 6 is provided on the outer wall of the piston seat 521. The second sealing ring 6 fits tightly against the inner wall of the bottle body 2 to further enhance the sealing effect and prevent the essence or lotion from leaking and the air in the air chamber from entering the piston seat 521.

[0054] A piston 4 is installed inside the bottle body 2, which divides the inside of the bottle body 2 into upper and lower chambers. The upper chamber of the piston 4 is the liquid storage chamber, and the lower chamber of the piston 4 is the gas chamber. The liquid outlet 5 is detachably connected to the bottle body 2.

[0055] A method for using a press-type vacuum bottle for easy storage and dispensing of serums or lotions:

[0056] In the initial state, the essence or lotion is stored in the liquid storage chamber, the piston 4 is in the initial position, and the air chamber is filled with air. The pressing head 51 is in the upward position under the action of the spring 523. Both the inlet check valve 524 and the outlet check valve 525 are in the closed state. The steel ball of the inlet check valve 524 is tightly attached to the conical surface of the valve seat under the action of the spring preload, blocking the connection between the liquid storage chamber and the piston seat 521. The outlet check valve 525 is in the closed state. The duckbill valve lip of the outlet check valve 525 closes naturally due to the elasticity of the silicone, preventing external air from entering the piston seat 521.

[0057] When dispensing liquid, first open the protective cover 1 and press the press head 51. The press head drives the piston rod 522, which in turn moves the piston seat 521 downward, compressing the spring 523.

[0058] The pressure inside the piston seat 521 increases, the inlet check valve 524 closes, and the steel ball is pressed back into the valve seat to prevent the essence or lotion from flowing back. The outlet check valve 525 opens, the silicone lip opens the gap, and the essence or lotion is squeezed out through the internal channel of the piston rod 522, and finally squeezed out from the outlet of the press head 51.

[0059] As the essence or lotion is squeezed out, the volume of the liquid storage chamber decreases, the volume of the air chamber increases, and the pressure inside the air chamber decreases. Under the action of external atmospheric pressure, the piston 4 moves upward inside the bottle body 2, continuously squeezing the essence or lotion into the liquid storage chamber, ensuring that the liquid storage chamber is always full of essence or lotion.

[0060] When the reset is initiated, the press head 51 is released, the spring 523 resets, and the piston rod 522 moves upward. The volume inside the piston seat 521 expands, the pressure inside the piston seat 521 decreases, and the pressure inside the piston seat 521 is lower than atmospheric pressure. The lip of the duckbill valve closes rapidly under the elastic force and atmospheric pressure, the outlet check valve 525 closes, blocking air from entering, the pressure inside the piston seat 521 decreases, the steel ball of the inlet check valve 524 is lifted, the inlet check valve 524 opens, and the essence or lotion is replenished from the storage chamber through the inlet 5211 to the piston seat 521, preparing for the next dispensing.

[0061] After use, after pressing, cover with the protective cap 1 to prevent dust and other impurities from entering the liquid outlet 5. Both the inlet check valve 524 and the outlet check valve 525 remain closed to maintain a vacuum environment.

[0062] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A press vacuum bottle for storing and releasing essence or lotion conveniently, comprising a protective cover (1), a bottle body (2), a bottle bottom (3), and a liquid outlet (5), characterized in that, The bottle body (2) is provided with a piston (4), the piston (4) divides the bottle body (2) into two cavities, the upper part of the piston (4) is a liquid storage cavity, the lower part of the piston (4) is a gas cavity, and the liquid outlet (5) is detachably connected with the bottle body (2).

2. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 1, wherein, The piston (4) comprises a piston body (41) and a connecting pipe (42), one end of the connecting pipe (42) is connected with the bottom end of the piston body (41), and the other end of the connecting pipe (42) is open and extends to the bottle bottom (3).

3. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 2, wherein, A first sealing ring (43) is arranged at the outer circle of the piston body (4), and the first sealing ring (43) is tightly attached to the inner wall of the bottle body (2).

4. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 1, wherein, The liquid outlet (5) comprises a pressing head (51), a pump core assembly (52) and a pump shell (53), the pressing head (51) is detachably connected with the pump core assembly (52), the pump core assembly (52) is sleeved with the pump shell (53), one end of the pump shell (53) is detachably connected with the protective cover (1), and the other end of the pump shell (53) is detachably connected with the bottle body (2).

5. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 4, wherein, The pump core assembly (52) comprises a piston seat (521), a piston rod (522) and a spring (523), the bottom end of the piston rod (522) is movably inserted into the piston seat (521), the top end of the piston rod (522) is movably connected with the pressing head (51), and the spring (523) is sleeved on the piston rod (522).

6. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 5, wherein, The bottom of the piston seat (521) is provided with an inlet (5211), and the top of the piston seat (521) is provided with an outlet (5212).

7. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 6, wherein, The inlet (5211) is provided with an inlet one-way valve (524), and the outlet (5212) is provided with an outlet one-way valve (525).

8. The squeeze vacuum bottle for storing and releasing serum or lotion according to claim 5, wherein, The bottom outer wall of the piston seat (521) is provided with a second sealing ring (6), and the second sealing ring (6) is tightly attached to the inner wall of the bottle body (2).

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