A liquid-filled bottle structure and its control method

Abstract

The present invention discloses a liquid-filled bottle structure and its control method, including the following steps: The liquid-filled bottle has a usage mode and a liquid filling mode. The liquid is stored in the inner bottle space below the first seal. In the usage mode, the sliding seal ring is toggled by the seal toggling member at the bottom of the outer bottle to the lower part of the seal groove position, so that the sliding seal ring is disengaged from the lower liquid passage of the vacuum piston. At this time, the sliding seal ring does not seal the lower liquid passage. When pressing the nozzle assembly, the liquid in the inner bottle flows into the lower part of the liquid filling passage of the vacuum piston through the lower fluid passage, and then is pumped upward and adsorbed through the straw and ejected through the nozzle assembly; In the liquid filling mode, the sliding seal ring seals the lower liquid passage. The present invention combines the seals of the sliding seal ring and the first seal ring to create a vacuum in the inner bottle during liquid filling, generating an adsorption force on the liquid in the mother bottle, so that the inner bottle is filled with liquid at one time.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid-filled bottles, and specifically to a liquid-filled bottle structure mainly used for filling perfume and its control method that can be recycled. Background Art

[0002] Liquid-filled bottles are relatively widely used bottles, such as perfume liquid-filled bottles. Traditional perfume liquid-filled bottles are often disposable and need to be discarded after use, resulting in waste of resources. For this reason, liquid-filled bottles that can be recycled have been developed.

[0003] Existing recyclable liquid-filled bottles for filling perfume spray perfume by pressing a spray head provided on the bottle. After use, the bottle body is filled by docking the mother bottle with the bottle body. The operation during filling is basically to forcefully send the bottle body in the mother bottle into the liquid-filled bottle using the filling pressure. A corresponding exhaust structure is provided on the liquid-filled bottle to ensure the smooth progress of filling. The current filling structure operation requires a lot of effort to hold the mother bottle when filling. Since there is no vacuum environment in the inner bottle, it needs to be filled multiple times to fill the inner bottle with liquid. In addition, when there is still liquid inside the bottle, if filling is carried out at this time and forced to press down, there is a possibility of damage and overflow of the liquid inside the inner bottle. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a liquid-filled bottle structure and its control method.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A control method for a liquid-filled bottle structure includes the following steps:

[0007] The liquid-filled bottle has a use mode and a filling mode, and the liquid is stored in the inner bottle space below the first seal;

[0008] In the use mode, the sliding seal ring is toggled by the seal toggling member at the bottom of the outer bottle to the lower part of the seal groove position, so that the sliding seal ring is separated from the lower liquid channel of the vacuum piston. At this time, the sliding seal ring does not play a sealing role on the lower liquid channel. When the spray head assembly is pressed, the liquid in the inner bottle flows into the lower part of the filling channel of the vacuum piston through the lower fluid channel, and then is pumped up and adsorbed through the straw and sprayed out through the spray head assembly;

[0009] In the liquid filling mode, when the liquid in the inner bottle is used up, first move the inner bottle upward. Correspondingly, the vacuum piston together with the vacuum piston seat moves downward. The sliding sealing ring is toggled by the sealing toggling part at the bottom of the inner bottle to the upper part of the sealing groove position, so that the sliding sealing ring seals the lower liquid channel of the vacuum piston until the vacuum piston moves to the lowermost part of the inner bottle. Then align the mother bottle with the liquid filling valve and move the vacuum piston upward. The relative inner bottle moves downward. During the upward movement of the vacuum piston in the inner bottle, a vacuum is formed in the inner bottle. The spring and the sealing ball in the lower cavity of the vacuum piston are adsorbed by the vacuum in the inner bottle and will move upward, causing the sealing ball to move away from the liquid outlet of the liquid filling valve, enabling the liquid in the liquid filling mother bottle to smoothly enter the liquid filling channel in the vacuum piston. The liquid is also adsorbed by the vacuum adsorption force of the inner bottle and flows into the inner bottle through the upper liquid channel.

[0010] In the described usage mode, the upper sealing part of the first sealing member simultaneously abuts against and seals the inner lining of the middle ring and the inner wall of the inner bottle, enabling the first sealing ring to form a sealing effect on the inner lining of the middle ring and the inner wall of the inner bottle.

[0011] In the described liquid filling mode, the specific method for forming a vacuum in the inner bottle is as follows:

[0012] By applying an external force to move the inner bottle downward, the relative vacuum piston moves upward, and the first sealing member also moves upward accordingly. The upper sealing part of the first sealing member forms a sealing effect on the inner wall of the inner bottle, causing the space in the inner bottle below the first sealing member to form a vacuum.

[0013] In the liquid filling mode, during the liquid filling process, as the liquid in the liquid filling mother bottle continuously enters the inner bottle, the space in the inner bottle below the first sealing member continuously increases, the vacuum piston moves upward relative to the inner bottle, and the upper sealing part of the first sealing member forms a sealing effect on the inner wall of the inner bottle. Until the inner bottle is filled with liquid, the upper sealing part of the first sealing member abuts against and seals the inner lining of the middle ring.

[0014] In the described usage mode, under the action of its own gravity and the gravity of the spring, the sealing ball freely falls at the liquid outlet of the liquid filling valve and forms a positioning through the compression of the spring, forming a sealing effect on the liquid filling valve, so that the liquid will not flow back from the liquid filling valve.

[0015] The sealing toggling part adopts a second sealing member and a lower fixing member. The second sealing member is arranged on the lower fixing member, and the lower fixing member is connected to the inner bottle. The second sealing member is provided with a transverse protrusion, which plays a toggling role on the sliding sealing ring through this transverse protrusion. At the same time, the transverse protrusion contacts the outer wall of the vacuum piston to form a sealing effect;

[0016] During use, the transverse protrusion of the second sealing member forms a seal on the outer wall of the vacuum piston below the sealing groove position; during the liquid filling process, the transverse protrusion of the second sealing member forms a seal on the outer wall of the vacuum piston above the sealing groove position.

[0017] There is an upper clamping position and a lower clamping position in the sealing groove. When the sliding sealing ring is toggled to the upper clamping position by the sealing toggling member, the upper clamping position forms a limiting effect on the sliding sealing ring, so that the sliding sealing ring will stay in the upper clamping position when not subjected to an external toggling force and form a sealing effect on the lower liquid channel; when the sliding sealing ring is toggled to the lower clamping position by the sealing toggling member, the lower clamping position forms a limiting effect on the sliding sealing ring, so that the sliding sealing ring will stay in the lower clamping position when not subjected to an external toggling force.

[0018] A liquid-filled bottle structure includes an inner bottle, a nozzle assembly and a middle ring liner. The upper end of the inner bottle is connected to the middle ring liner. A vacuum piston is provided in the inner bottle. A vacuum piston seat and a liquid filling valve are provided at the bottom of the vacuum piston. A liquid filling channel, a pump and a straw are provided in the vacuum piston. The upper end of the straw is connected to the pump and the lower end extends to the lower end of the vacuum piston. An upper liquid channel is provided in the upper part of the vacuum piston and a lower liquid channel is provided in the lower part. A sliding sealing ring is provided on the side wall of the vacuum piston;

[0019] A first sealing member is provided on the vacuum piston. The first sealing member has an upper sealing part and a lower sealing part. A cavity is provided in the first sealing member. The lower sealing part is located on one side of the cavity. An air hole communicating with the cavity is provided in the upper part of the vacuum piston. The upper sealing part extends obliquely upward to contact the inner wall of the inner bottle, and the lower sealing part extends downward.

[0020] A sealing toggling member is provided at the lower part of the inner bottle. The sealing toggling member moves synchronously with the up and down movement of the inner bottle. The sealing toggling member forms a toggling effect on the sliding sealing ring. A sealing groove is provided at the lower part of the vacuum piston. The lower liquid channel is provided in the area where the sealing groove is located. The sealing groove forms a travel area for the sliding sealing ring to move up and down. When the sliding sealing ring is located at the uppermost part of the sealing groove, it seals the lower liquid channel. When the sliding sealing ring is located at the lowermost part of the sealing groove, it disengages from the lower liquid channel.

[0021] An elastic sealing member is provided in the cavity at the lower part of the vacuum piston. The elastic sealing member includes a sealing ball and a spring. The sealing ball is provided on the liquid outlet of the liquid filling valve, and the spring is provided between the sealing ball and the top wall of the cavity.

[0022] The present invention has the following beneficial effects:

[0023] Through the provided first sealing member, during the use process, a multi-directional sealing effect is formed to ensure the normal use of the liquid-filled bottle; during the liquid filling process, the first sealing member also forms a sealing effect to ensure that all the liquid can enter the inner bottle, avoiding waste during the liquid filling process. During the liquid filling process, a vacuum is formed in the inner bottle, which can reduce the pressing force on the liquid filling mother bottle during the liquid filling process, making the liquid filling operation easier, and at the same time helping the liquid to quickly enter the inner bottle.

[0024] Combined with the lateral protrusion of the sliding sealing ring and the second sealing member, liquid leakage problems can be further avoided during the liquid filling process and in use, improving the product quality.

[0025] When the bottle is already filled with liquid, if liquid filling is repeated, the gas in the cavity of the first sealing member is squeezed by the rising liquid level and the pressure increases, causing the lower sealing part to expand outwards and form a seal with the inner bottle wall, thus preventing the vacuum piston from moving downwards, playing a role in preventing incorrect operation when the bottle is already filled with liquid and liquid filling is repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional structure diagram of the present invention during use and closed;

[0027] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0028] Figure 3 is Figure 1 an enlarged schematic view of part D in

[0029] Figure 4 It is a schematic cross-sectional view of the present invention during the liquid filling preparation process;

[0030] Figure 5 is Figure 4 an enlarged schematic view of part B in

[0031] Figure 6 It is a schematic cross-sectional view of the present invention when opened and starting to fill with liquid;

[0032] Figure 7 is Figure 6 an enlarged schematic view of part C in

[0033] Reference numerals:

[0034] 1 - outer bottle; 2 - inner bottle; 3 - vacuum piston; 4 - middle ring lining; 5 - upper cover; 6 - nozzle assembly; 7 - pump; 8 - first sealing member; 81 - upper sealing part; 82 - lower sealing part; 9 - upper liquid channel; 10 - straw; 11 - liquid filling channel; 12 - vacuum piston seat; 13 - sliding sealing ring; 14 - second sealing member; 141 - lateral protrusion; 15 - lower fixing member; 16 - liquid filling valve; 17 - spring; 18 - sealing ball; 19 - lower liquid channel; 20 - sealing groove position; 21 - air hole; 22 - cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1

[0039] One aspect of the present invention discloses a liquid-filled bottle structure, including an inner bottle 2, a nozzle assembly 6 and a middle ring liner 4. The upper end of the inner bottle 2 is connected to the middle ring liner 4. A vacuum piston 3 is provided in the inner bottle 2. A vacuum piston seat 12 and a liquid filling valve 16 are provided at the bottom of the vacuum piston 3. A liquid filling channel 11, a pump 7 and a straw 10 are provided in the vacuum piston 3. The upper end of the straw 10 is connected to the pump 7 and the lower end extends to the lower end of the vacuum piston 3. An upper liquid channel 9 is provided in the upper part of the vacuum piston 3 and a lower liquid channel 19 is provided in the lower part. A sliding sealing ring 13 for sealing the lower liquid channel 19 during the liquid filling process is provided on the side wall of the vacuum piston 3. Both the upper liquid channel 9 and the lower liquid channel 19 are in communication with the liquid filling channel 11 and the space of the inner bottle 2.

[0040] When filling, the sliding seal ring 13 blocks and seals the lower liquid channel 19. After the filling is completed, the sliding seal ring 13 is separated from the lower liquid channel 19 and no longer seals. When the sliding seal ring 13 seals the lower liquid channel 19, the liquid filling operation can be performed. When the sliding seal ring does not seal the lower liquid channel, the liquid in the inner bottle can enter the liquid filling channel of the vacuum piston through the lower liquid channel, and then enter the lower part of the vacuum piston through the liquid filling channel, be adsorbed by the liquid suction component, and then be sprayed out through the spray head component.

[0041] A first sealing member 8 is provided on the vacuum piston 3, and the first sealing member 8 has an upper sealing portion 81 and a lower sealing portion 82. A cavity 22 is provided inside the first sealing member 8, and the lower sealing portion 82 is located on one side of the cavity 22. An air hole 21 communicating with the cavity 22 is provided on the upper portion of the vacuum piston 3. The upper sealing portion 81 extends upwardly and obliquely to contact the inner wall of the inner bottle, and the lower sealing portion 82 extends downwardly. When the lower sealing portion 82 is not squeezed by external force, there is a gap between the lower sealing portion 82 and the inner wall of the inner bottle.

[0042] The first seal is a whole, and the upper seal and the lower seal are directly formed during processing. The upper seal 81 extends outwardly and obliquely to form a seal on the inner wall of the inner bottle 2, forming a one-way sealing effect, and the lower seal 82 extends downward to form a certain arc. The normal operation of filling liquid is to fill liquid only when the liquid in the inner bottle is completely used up and the nozzle assembly can no longer spray liquid. However, when there is still a part of liquid in the inner bottle during use, if the liquid is filled at this time, the vacuum piston is moved downward, and the inner bottle area below the first seal has liquid, and the liquid retained inside moves upward relatively, squeezing the air in the original space, so that the pressure of the inner bottle space below the first seal increases, and at this time, the gas will flow from the air hole 21 of the vacuum piston to the cavity 22 on the first seal 8. As the gas increases, the cavity 22 is squeezed, so that the lower seal 82 on the first seal 8 expands outward to press against the inner wall of the inner bottle to form a seal, making it difficult for the piston to continue to move downward, thereby avoiding the occurrence of erroneous filling operation, and playing a fool-proof role in repeated filling. When the vacuum piston 3 moves downward, it drives the first sealing member 8 to move downward. At this time, the upper sealing portion 81 of the first sealing member 8 does not play a role in sealing the inner wall of the inner bottle. Instead, when the vacuum piston 3 moves upward relative to the inner bottle, the upper sealing portion 81 plays a sealing role. This is a one-way valve structure.

[0043] Embodiment 2

[0044] like Figures 1-4As shown, in order to better move the sliding sealing ring, a sealing toggle member is provided at the lower part of the inner bottle 2, and the sealing toggle member includes a second sealing member 14 and a lower fixing member 15. The second sealing member 14 is provided with a transverse protrusion 141, and the lower fixing member 15 is connected to the vacuum piston 3. The second sealing member 14 is arranged on the lower fixing member 15, and the sealing toggle member moves synchronously with the up and down movement of the inner bottle 2. The transverse protrusion 141 of the second sealing member 14 forms a toggle effect on the sliding sealing ring 13. A sealing groove 20 is provided at the lower part of the vacuum piston 3, and a lower liquid channel 19 is arranged in the area where the sealing groove 20 is located. The sealing groove 20 forms a travel area for the sliding sealing ring 13 to move up and down. When the sliding sealing ring is located at the uppermost part of the sealing groove, it seals the lower liquid channel, and when the sliding sealing ring is located at the lowermost part of the sealing groove, it is separated from the lower liquid channel.

[0045] An elastic seal is provided in the cavity at the lower part of the vacuum piston 3. The elastic seal includes a sealing ball 18 and a spring 17. The sealing ball 18 is provided on the liquid outlet of the filling valve 16, and the spring 17 is provided between the sealing ball and the top wall of the cavity.

[0046] In addition, an outer bottle can be arranged outside the inner bottle, and the outer bottle can be installed and connected with the vacuum piston seat, so that the vacuum piston seat and the outer bottle can move synchronously. The inner bottle and the outer bottle have an active structural relationship. When subjected to external force, the inner bottle and the outer bottle can move relatively. When the inner bottle and the outer bottle move to a closed state, the upper end of the outer bottle presses against the inner lining of the middle ring.

[0047] Embodiment 3

[0048] The present invention also provides a control method for a liquid-filled bottle structure, comprising the following steps:

[0049] The liquid-filled bottle has a use mode and a liquid-filled mode, and the liquid is stored in the inner bottle space below the first sealing component.

[0050] like Figure 1 and 2 As shown, in the use mode, the sliding seal ring 13 is moved to the lower part of the sealing groove 20 by the transverse protrusion 141 of the second seal 14 at the bottom of the outer bottle 1, so that the sliding seal ring 13 is separated from the lower liquid channel 19 of the vacuum piston 3. At this time, the sliding seal ring 13 does not have a sealing effect on the lower liquid channel 19. The nozzle assembly is pressed, and the liquid in the inner bottle 2 flows into the lower part of the filling channel of the vacuum piston 3 through the lower fluid channel 19, and then is sucked upward by the pump 7 through the straw 10 and sprayed out through the nozzle assembly. The nozzle assembly is a well-known device. When the nozzle assembly is pressed, the pump is started, sucking the straw, making the inside of the straw vacuum, and at the same time, the filling channel connected to the straw will also form a vacuum channel, so as to have an adsorption force, so that the liquid in the inner bottle can smoothly enter the straw. In the use mode, the transverse protrusion 141 of the second seal 14 is located in the lower area of the sliding seal ring 13.

[0051] In the liquid filling mode, during the preparation of the liquid filling process, as Figure 3 and 4 shown, move the inner bottle 2 upward. Accordingly, the vacuum piston 3 and the vacuum piston seat 12 move downward synchronously. During the upward movement of the inner bottle 2, the second seal 14 and the lower fixing member 15 are driven to move upward together. During the upward movement of the second seal 14, after moving to a certain position, the lateral protrusion 141 toggles the sliding seal ring 13 to the upper part of the sealing groove 20, so that the sliding seal ring 13 seals the lower liquid passage 19 of the vacuum piston 3 until the vacuum piston 3 moves to the lowermost part of the inner bottle 2. Then align the mother bottle with the liquid filling valve 16 and move the vacuum piston 3 upward. Accordingly, the inner bottle 2 moves downward. During the upward movement of the vacuum piston 3 in the inner bottle 2, a vacuum is formed in the inner bottle 2. The spring 17 and the sealing ball 18 in the lower cavity of the vacuum piston 3 are adsorbed by the vacuum in the inner bottle and will move upward, causing the sealing ball to move away from the liquid outlet of the liquid filling valve, so that the liquid in the liquid filling mother bottle can smoothly enter the liquid filling passage in the vacuum piston. The liquid is also affected by the vacuum adsorption in the inner bottle and flows into the inner bottle through the upper liquid passage.

[0052] In the described usage mode, the upper sealing part 81 of the first seal 8 abuts against and seals the inner lining 4 of the middle ring and the inner wall of the inner bottle 2 at the same time, so that the first sealing ring 8 forms a sealing effect on the inner lining 4 of the middle ring and the inner wall of the inner bottle 2. One upper sealing part 81 seals two components at the same time.

[0053] In the described liquid filling mode, the specific way to form a vacuum in the inner bottle is as follows:

[0054] By applying an external force, move the inner bottle 2 downward. Accordingly, the vacuum piston 3 moves upward, and the first seal 8 also moves upward accordingly. The upper sealing part 81 of the first seal 8 forms a sealing effect on the inner wall of the inner bottle 2, so that the space in the inner bottle below the first seal 8 forms a vacuum. As the vacuum piston 3 continues to move downward, it finally moves to the lowermost area of the inner bottle 2, as Figure 5 and 6 shown. At this time, the space in the inner bottle below the first seal 8 is the smallest. Therefore, the liquid in the inner bottle has been evacuated, or basically evacuated.

[0055] In the liquid filling mode, during the liquid filling process, the liquid filling master bottle keeps against the liquid filling valve, and the liquid filling master bottle is kept stationary. Then, the inner bottle 2 is pressed downwards, and the relative vacuum piston 3 moves upwards. During the upward movement, the upper sealing part 81 of the first seal 8 forms a sealing effect on the inner wall of the inner bottle 2. As the liquid in the liquid filling master bottle continuously enters the inner bottle 2, the space of the inner bottle 2 below the first seal 8 continuously increases, and the vacuum piston 3 continuously moves upwards relative to the inner bottle 2. Until the inner bottle is filled with liquid, the upper sealing part of the first seal 8 simultaneously abuts and seals the middle ring lining 4 and the inner wall of the inner bottle 2. During the liquid filling process, the sealing ball is pushed open by a part of the space, so that the liquid can smoothly enter the vacuum piston from the liquid filling valve, then flow upwards through the liquid filling channel, and finally flow into the inner bottle through the upper fluid channel. Affected by the vacuum environment in the inner bottle, the liquid can enter the inner bottle more smoothly.

[0056] In the described usage mode, under the action of its own gravity and the gravity of the spring 17, the sealing ball 18 freely falls at the liquid outlet of the liquid filling valve 16 and forms a positioning through the compression of the spring 17, forming a sealing effect on the liquid filling valve 16, so that the liquid will not flow back from the liquid filling valve.

[0057] In addition, there is an upper clamping position and a lower clamping position in the sealing groove 20. When the sliding sealing ring is toggled to the upper clamping position by the sealing toggling part, the upper clamping position forms a limiting effect on the sliding sealing ring, so that the sliding sealing ring will stay in the upper clamping position and form a sealing effect on the lower liquid channel when it is not affected by an external toggling force; when the sliding sealing ring is toggled to the lower clamping position by the sealing toggling part, the lower clamping position forms a limiting effect on the sliding sealing ring, so that the sliding sealing ring will stay in the lower clamping position when it is not affected by an external toggling force.

[0058] In addition, the transverse protrusion 141 provided on the second seal 14 is located in the lower region of the sliding sealing ring 13 when the liquid filling bottle is in the usage mode, and forms a sealing effect on the lower outer wall of the vacuum piston 3, which can prevent the liquid in the inner bottle from flowing out through the gap between the inner bottle and the vacuum piston.

[0059] When in the liquid filling mode, the transverse protrusion 141 is located in the upper region of the sliding sealing ring 13 and forms a sealing effect on the outer wall of the vacuum piston, which can also prevent the liquid filled into the inner bottle from directly flowing into the outer bottle through the gap between the inner bottle and the vacuum piston, playing a role in preventing liquid leakage.

[0060] It should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A liquid-filled bottle structure, comprising an inner bottle, a nozzle assembly and a middle ring liner, wherein the upper end of the inner bottle is connected to the middle ring liner, and it is characterized in that, The inner bottle is provided with a vacuum piston, the bottom of the vacuum piston is provided with a vacuum piston seat and a filling valve, the vacuum piston is provided with a filling channel, a pump and a straw, the upper end of the straw is connected to the pump, and the lower end extends to the lower end of the vacuum piston, the upper part of the vacuum piston is provided with an upper liquid channel, the lower part is provided with a lower liquid channel, and the side wall of the vacuum piston is provided with a sliding sealing ring; the vacuum piston is provided with a first sealing member, which has an upper sealing part and a lower sealing part, a cavity is provided in the first sealing member, the lower sealing part is located on one side of the cavity, the upper part of the vacuum piston is provided with an air hole connected with the cavity, the upper sealing part extends upwardly and tilts to contact the inner wall of the inner bottle, and the lower sealing part extends downwardly. The sealing toggle member is provided at the lower part of the inner bottle, and the sealing toggle member moves synchronously with the up and down movement of the inner bottle, and the sealing toggle member forms a toggle effect on the sliding sealing ring. A sealing groove is provided at the lower part of the vacuum piston, and the lower liquid channel is arranged in the area where the sealing groove is located. The sealing groove forms a travel area for the sliding sealing ring to move up and down. When the sliding sealing ring is located at the uppermost part of the sealing groove, it seals the lower liquid channel, and when the sliding sealing ring is located at the lowermost part of the sealing groove, it is separated from the lower liquid channel; the upper sealing part extends outwardly and obliquely to form a seal on the inner wall of the inner bottle to form a one-way sealing effect, and the lower sealing part extends downward in an arc.

2. The structure of the liquid-filled bottle according to claim 1, wherein, An elastic sealing member is arranged in the cavity at the lower part of the vacuum piston. The elastic sealing member comprises a sealing ball and a spring. The sealing ball is arranged on the liquid outlet of the filling valve, and the spring is arranged between the sealing ball and the top wall of the cavity.

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