Dosage bottle cap

Abstract

The application discloses a kind of quantitative bottle caps, comprising: lower cover, inside is provided with partition, partition is separated and is formed with quantitative cavity and connecting cavity along up-down direction in lower cover interior, partition is provided with communication port, partition is provided with the sealing column of upward extension;Upper cover, the top outside of lower cover is sleeved, the position of upper cover top side is opposite sealing column and is provided with discharge port, the connecting column of downward extension is arranged in upper cover, the bottom end of connecting column passes through communication port and is provided with sealing sheet, wherein, when upper cover is relatively moved upward to lower cover, sealing sheet blocks communication port, the top end of sealing column removes sealing discharge port;When upper cover is relatively moved downward to lower cover, sealing sheet removes the block of communication port, the top end of sealing column seals discharge port, the application simple structure, good sealing, by the up-down activity of upper cover can realize quantitative liquid, convenient to use.

Description

Technical Field

[0001] This invention relates to a bottle cap, and more particularly to a metering bottle cap. Background Technology

[0002] In daily life, people often need to pour out solutions from bottles. Traditional bottle caps only have a dispensing hole, making it difficult to dispense a precise amount of solution. Therefore, some bottle caps on the market offer metered dispensing capabilities. These caps have a button on the outside; pressing the button activates an internal mechanism that divides the cap's space, allowing for precise dispensing. However, these caps often have poor sealing, and after prolonged use, leaks can easily occur at points with gaps, such as the button, and these leaks are difficult to clean. Therefore, there is a pressing need for a metered dispensing cap with a better seal. Summary of the Invention

[0003] The purpose of this invention is to provide a metering cap to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this invention is:

[0005] A metering cap includes: a lower cap with a partition inside, the partition dividing the interior of the lower cap vertically into a metering cavity and a connecting cavity, the partition having a connecting opening and an upwardly extending sealing post; and an upper cap fitted over the top outer side of the lower cap, the upper cap having a discharge port on its top side opposite the sealing post, the upper cap having a downwardly extending connecting post inside, the bottom end of the connecting post passing through the connecting opening and having a sealing plate thereon, wherein when the upper cap moves upward relative to the lower cap, the sealing plate blocks the connecting opening, and the top end of the sealing post releases the seal on the discharge port; when the upper cap moves downward relative to the lower cap, the sealing plate releases the blockage on the connecting opening, and the top end of the sealing post seals the discharge port.

[0006] This technical solution has at least the following beneficial effects: In use, the lower cap is connected to the bottle body, so that the bottle mouth is connected to the connecting cavity, thus installing the metering cap. When it is not necessary to pour out the solution, the upper cap is moved downwards relative to the lower cap, and the top of the sealing post seals the outlet of the upper cap. At this time, the sealing plate releases its obstruction of the connecting port. When metered dispensing is required, the bottle body is tilted or inverted, allowing the solution inside to flow from the connecting port into the metering cavity for metered dispensing. After metered dispensing, the upper cap is moved upwards relative to the lower cap. At this time, the upper cap, through the connecting post, moves the sealing plate closer to the connecting port and blocks the connecting port. Combined with the separator, this prevents the contents of the bottle from being dispensed. The solution continues to flow into the metering chamber, while the outlet of the top cap is far from the sealing column, thus releasing the seal on the outlet. The solution in the metering chamber can be poured out from the outlet, achieving metered dispensing. After completion, the bottle is placed upright, and the top cap is moved down relative to the bottom cap. The top of the sealing column is used to reseal the outlet. Under the action of gravity, the top cap can also be kept at the bottom of the stroke, thus maintaining the seal on the outlet. This eliminates the need for buttons or other structures on the outside of the bottle cap that link to the internal components, effectively reducing the risk of solution leakage from the assembly gaps during use. Furthermore, the overall structure is simple, has good sealing performance, and metered dispensing can be achieved simply by moving the top cap up and down, making it convenient to use.

[0007] As a further improvement to the above technical solution, a connecting sleeve is connected to the bottom end of the connecting column, and a sealing sheet is formed at the bottom end of the connecting sleeve. The outer diameter of the sealing sheet is larger than the inner diameter of the communication port. The connecting column and the sealing sheet are separate structures. During production, the connecting column can be passed through the communication port first, and then the connecting sleeve can be connected to the bottom end of the connecting column, so that the sealing sheet is located below the communication port, improving the convenience of production. In use, the connecting column, through its cooperation with the connecting sleeve, drives the sealing sheet to move up and down synchronously, thereby realizing the opening and sealing of the communication port.

[0008] As a further improvement to the above technical solution, a variable diameter section is provided in the middle of the lower cover, the outer diameter of which gradually decreases from top to bottom. An annular protrusion is provided on the inner side of the bottom of the upper cover. When the upper cover moves upward relative to the lower cover, the annular protrusion fits tightly against the outer side of the variable diameter section. The inner side of the upper cover and the outer side of the lower cover are in close contact, preventing solution leakage when the bottle is inverted. When the upper cover moves upward relative to the lower cover, the annular protrusion can fit tightly against the side wall of the gradually narrowing variable diameter section, thereby further increasing the contact area between them and further reducing the risk of solution leakage.

[0009] As a further improvement to the above technical solution, an upper sealing cylinder is provided inside the upper cover. The upper sealing cylinder includes an upper variable diameter section and a lower variable diameter section connected to each other. The top end of the upper variable diameter section is connected to the inner top side of the upper cover. The outer diameter of the upper variable diameter section gradually increases from top to bottom, and the outer diameter of the lower variable diameter section gradually decreases from top to bottom. The connection between the upper variable diameter section and the lower variable diameter section abuts against the inner side of the lower cover. An annular gap is formed between the upper sealing cylinder and the inner wall of the upper cover. When the upper and lower covers are combined, the top of the lower cover is inserted into this annular gap, which improves the sealing between the upper and lower covers and further prevents the solution from leaking out. Since the upper cover needs to move up and down relative to the lower cover, the upper sealing cylinder gradually shrinks in the outer radial direction of the upper diameter-changing section, thereby reducing the contact friction with the upper cover. Similarly, the upper sealing cylinder gradually shrinks downward in the lower diameter-changing section, which not only reduces the contact friction with the upper cover, but also facilitates the guidance when the top of the upper cover is inserted into the gap between the upper sealing cylinder and the inner wall of the upper cover. At this time, the upper sealing cylinder contacts the lower cover at the connection position of the upper and lower diameter-changing sections, forming a sealing line, which strengthens the sealing effect between the upper and lower covers and reduces the impact on their relative movement.

[0010] As a further improvement to the above technical solution, a lower sealing cylinder is provided inside the lower cover. The lower sealing cylinder includes an upper sealing section and a lower sealing section that are connected to each other. The top end of the upper sealing section is connected to the bottom side of the separator. The outer diameter of the upper sealing section gradually increases from top to bottom, and the outer diameter of the lower sealing section gradually decreases from top to bottom. An annular gap is also formed between the inner side of the lower cap and the lower sealing cylinder. When the lower cap is connected to the bottle body, the bottle mouth can be inserted into this annular gap, which can improve the sealing performance of the connection between the lower cap and the bottle mouth. In order to facilitate the insertion of the bottle mouth into the annular gap, the lower sealing cylinder gradually shrinks upward from the outer radial direction of the upper sealing section, thereby reducing the contact friction with the upper cap. Similarly, the lower sealing cylinder gradually shrinks downward at the position of the lower sealing section, which can reduce the contact friction between the upper cap and the inner side of the bottle mouth when the upper cap is inserted into the bottle mouth position, and also facilitate the guidance when the bottle mouth position is inserted into the gap between the lower sealing cylinder and the inner side of the lower cap. At this time, the lower sealing cylinder contacts the lower cap at the connection position between the upper sealing section and the lower sealing section, forming a sealing line, which not only strengthens the sealing effect between the lower cap and the bottle mouth, but also reduces the impact on the relative movement of the two.

[0011] As a further improvement to the above technical solution, the top of the sealing column protrudes radially to form a sealing protrusion. When the upper cover moves downward relative to the lower cover, the sealing protrusion is interference-fitted into the outlet. The top of the sealing column protrudes outward to form a sealing protrusion for sealing. When sealing the inside of the bottle is required, the sealing protrusion is interference-fitted into the outlet position of the upper cover to prevent the solution from leaking out of the outlet.

[0012] As a further improvement to the above technical solution, the present invention also includes a flip cover, wherein a connecting ear is connected between one side of the flip cover and one side of the upper cover. The flip cover can be flipped up and down relative to the upper cover through the connection with the connecting ear. When liquid is not needed, the flip cover can be flipped down to the top side of the upper cover to block the discharge port, which can further improve the sealing performance. When liquid is needed, the flip cover can be flipped up again to open.

[0013] As a further improvement to the above technical solution, a discharge cylinder is provided on the top side of the upper cover at the position of the discharge port, and a blocking cylinder is provided on the bottom side of the flip cover. The blocking cylinder is connected to the discharge cylinder. When the flip cover is flipped down to the top side of the upper cover, the blocking cylinder is inserted into the discharge cylinder. The cooperation of the two can further improve the sealing effect of the discharge port and better maintain the flip cover in the state of flipping down to the upper cover.

[0014] As a further improvement to the above technical solution, the top of the discharge cylinder is provided with a flared section, the inner radial direction of which gradually increases upward. The flared section facilitates the insertion of the plug cylinder into the discharge cylinder when the cover is flipped downward to the top side of the upper cover, improving the ease of cooperation between the cover and the upper cover.

[0015] As a further improvement to the above technical solution, an anti-detachment head is formed at the top of the sealing column, and the outer radial direction of the anti-detachment head gradually narrows upward. When the sealing column opens the outlet, the anti-detachment head remains at the outlet. The upwardly narrowing design of the anti-detachment head ensures that the solution pours out from the gap between the anti-detachment head and the outlet. Furthermore, the movement limit of the anti-detachment head at the outlet prevents misalignment between the sealing column and the outlet. When the upper cover moves downward relative to the lower cover, the shape of the anti-detachment head guides the movement, ensuring that the top of the sealing column is properly connected to the outlet, thus sealing the outlet. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a top view of the present invention.

[0019] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure.

[0020] In the attached diagram: 100-lower cover, 110-separator, 111-connecting port, 120-sealing post, 121-anti-detachment head, 130-reducing diameter section, 140-lower sealing cylinder, 200-upper cover, 210-connecting post, 221-sealing plate, 222-connecting sleeve, 230-annular protrusion, 240-upper sealing cylinder, 250-flip cover, 251-blocking cylinder, 260-connecting ear, 270-discharge cylinder. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] Reference Figure 1 , Figure 2 and Figure 3A metering cap includes a lower cap 100 and an upper cap 200. The lower cap 100 has an internal partition 110 that divides the interior of the lower cap 100 vertically into a metering cavity and a connecting cavity. The partition 110 has a connecting opening 111 and an upwardly extending sealing post 120. In practical applications, the sealing post 120 can be a hollow structure to reduce the weight of the lower cap 100 and lower production costs. A snap, groove, or thread can be provided on the inner side of the lower cap 100 within the connecting cavity to facilitate connection with an external bottle body. The upper cap 200 is fitted over the top outer side of the lower cap 100, and the inner side of the upper cap 200 is connected to... The outer sides of the lower cover 100 are close together to achieve a seal. The top side of the upper cover 200 is provided with a discharge port opposite the sealing post 120. The upper cover 200 is provided with a downwardly extending connecting post 210. The bottom end of the connecting post 210 passes through the communication port 111 and is provided with a sealing plate 221. When the upper cover 200 moves upward relative to the lower cover 100, the sealing plate 221 blocks the communication port 111, and the top end of the sealing post 120 releases the seal on the discharge port. When the upper cover 200 moves downward relative to the lower cover 100, the sealing plate 221 releases the blockage on the communication port 111, and the top end of the sealing post 120 seals the discharge port.

[0026] As described above, during use, the lower cap 100 is connected to the bottle body, so that the bottle mouth is connected to the connecting cavity, thus installing the quantitative bottle cap. When it is not necessary to pour out the solution from the bottle, the upper cap 200 is moved downward relative to the lower cap 100. The top of the sealing post 120 can seal the outlet position of the upper cap 200, and at this time, the sealing plate 221 releases its obstruction of the connecting port 111. When quantitative dispensing is required, the bottle body is tilted or inverted, so that the solution in the bottle flows into the quantitative cavity from the connecting port 111. Quantitative dispensing is performed first. After completion, the upper cap 200 is moved upward relative to the lower cap 100. At this time, the upper cap 200, through the connecting post 210, drives the sealing plate 221 closer to the connecting port 111 and blocks the connecting port 111, in conjunction with the separator 1. The upper cover 200 prevents the solution inside the bottle from continuing to flow into the metering chamber. Since the outlet of the upper cover 200 is far from the sealing column 120, the seal on the outlet is released, allowing the solution in the metering chamber to be poured out from the outlet, achieving metered dispensing. After completion, the bottle is placed upright, and the upper cover 200 is moved downwards relative to the lower cover 100. The top of the sealing column 120 re-seals the outlet. Under the influence of gravity, the upper cover 200 remains at the bottom of its travel, thus maintaining a seal on the outlet. This eliminates the need for buttons or other structures on the outside of the bottle cap to link to the internal components, effectively reducing the risk of solution leakage from the assembly gaps during use. Furthermore, the overall structure is simple, with good sealing performance. Metered dispensing can be achieved simply by moving the upper cover 200 up and down, making it convenient to use.

[0027] The sealing of the connecting port 111 by the sealing plate 221 can have various structural forms. For example, the sealing plate 221 and the connecting port 111 can be an interference fit. In this embodiment, the outer diameter of the sealing plate 221 is designed to be larger than that of the connecting port 111. Therefore, when the sealing plate 221 is pressed tightly against the separator plate 110, it seals the connecting port 111. Specifically, a connecting sleeve 222 is connected to the bottom end of the connecting post 210, and the sealing plate 221 is formed at the bottom end of the connecting sleeve 222. The outer diameter of the sealing plate 221 is larger than the inner diameter of the connecting port 111. In practical applications, the connecting sleeve 222 and the connecting post 210 can be connected to each other by a snap-fit, allowing for quick assembly. The connecting post 210 and the sealing plate 221 are separate structures. During production, the connecting post 210 can be passed through the connecting port 111 first, and then the connecting sleeve 222 can be connected to the bottom end of the connecting post 210, so that the sealing plate 221 is located below the connecting port 111, which improves the convenience of production. In use, the connecting post 210, through cooperation with the connecting sleeve 222, drives the sealing plate 221 to move up and down synchronously, thereby realizing the opening and sealing of the connecting port 111.

[0028] To prevent excessive movement of the upper cover 200 relative to the lower cover 100 when it moves upward, a limiting structure can be provided at the bottom of the upper cover 200 to limit its upward movement. The cooperation between the limiting structure and the upper cover 200 further improves the sealing between the upper cover 200 and the lower cover 100. Specifically, a variable diameter section 130 is provided in the middle of the lower cover 100, and the outer diameter of the variable diameter section 130 gradually decreases from top to bottom. An annular protrusion 230 is provided on the inner side of the bottom of the upper cover 200. When the upper cover 200 moves upward relative to the lower cover 100, the annular protrusion 230 is in close contact with the outer side of the variable diameter section 130. The inner side of the upper cover 200 and the outer side of the lower cover 100 are close to each other to prevent the solution from leaking outward from between them when the bottle is inverted. When the upper cover 200 moves upward relative to the lower cover 100, the annular protrusion 230 can fit tightly against the side wall of the gradually narrowing variable diameter section 130, thereby further increasing the contact area between the two and further reducing the risk of solution leakage.

[0029] The inner side of the upper cover 200 and the outer side of the lower cover 100 need to be close to each other to achieve a seal between them. Since the upper cover 200 and the lower cover 100 need to move up and down relative to each other, in order to effectively reduce the leakage of solution from the gap between the movements, in this embodiment, an upper sealing cylinder 240 is provided inside the upper cover 200. The upper sealing cylinder 240 includes an upper variable diameter section 130 and a lower variable diameter section 130 connected to each other. The top end of the upper variable diameter section 130 is connected to the inner top side of the upper cover 200. The outer diameter of the upper variable diameter section 130 gradually increases from top to bottom, and the outer diameter of the lower variable diameter section 130 gradually decreases from top to bottom. The connection between the upper variable diameter section 130 and the lower variable diameter section 130 abuts against the inner side of the lower cover 100. An annular gap is formed between the upper sealing cylinder 240 and the inner wall of the upper cover 200. When the upper cover 200 and the lower cover 100 are combined, the top of the lower cover 100 is inserted into this annular gap, which improves the sealing performance between the upper cover 200 and the lower cover 100 and further prevents the solution from leaking out. Since the upper cover 200 needs to move up and down relative to the lower cover 100, the upper sealing cylinder 240 gradually narrows in the outer radial direction of the upper diameter-reducing section 130, thereby reducing the contact friction with the upper cover 200. Similarly, the upper... The sealing cylinder 240 gradually tapers downwards at the lower diameter section 130, which reduces contact friction with the upper cover 200 and facilitates guidance when the top of the upper cover 200 is inserted into the gap between the upper sealing cylinder 240 and the inner side of the upper cover 200. At this time, the upper sealing cylinder 240 contacts the lower cover 100 at the connection position between the upper diameter section 130 and the lower diameter section 130, forming a sealing line, which not only strengthens the sealing effect between the upper cover 200 and the lower cover 100, but also reduces the impact on the relative movement of the two.

[0030] In practical applications, the upper sealing cylinder 240 can be made of an elastic material, such as plastic or metal. When the upper sealing cylinder 240 is inserted between the top of the lower cover 100 and the upper cover 200, the upper sealing cylinder 240 can be squeezed inward, causing it to deform elastically inward. This gives the upper sealing cylinder 240 pressure against the top of the upper cover 200, further improving the sealing performance of the connection between the two.

[0031] To further improve the connection effect when the lower cover 100 is connected to the external bottle body, in this embodiment, a lower sealing cylinder 140 is provided inside the lower cover 100. The lower sealing cylinder 140 includes an upper sealing section and a lower sealing section that are connected to each other. The top end of the upper sealing section is connected to the bottom side of the separator 110. The outer diameter of the upper sealing section gradually increases from top to bottom, and the outer diameter of the lower sealing section gradually decreases from top to bottom. An annular gap is also formed between the inner side of the lower cap 100 and the lower sealing cylinder 140. When the lower cap 100 is connected to the bottle body, the bottle mouth can be inserted into this annular gap, which can improve the sealing performance of the connection between the lower cap 100 and the bottle mouth. In order to facilitate the insertion of the bottle mouth into the annular gap, the lower sealing cylinder 140 gradually shrinks in the outer radial direction of the upper sealing section, thereby reducing the contact friction with the upper cap 200. Similarly, the lower sealing cylinder 140 gradually shrinks downward in the lower sealing section, which can reduce the contact friction between the upper cap 200 and the inner side of the bottle mouth when the upper cap 200 is installed at the bottle mouth position, and also facilitate the guidance when the bottle mouth position is inserted into the gap between the lower sealing cylinder 140 and the inner side of the lower cap 100. At this time, the lower sealing cylinder 140 contacts the lower cap 100 at the connection position between the upper sealing section and the lower sealing section, forming a sealing line, which not only strengthens the sealing effect between the lower cap 100 and the bottle mouth, but also reduces the impact on the relative movement of the two.

[0032] There are various structural forms for sealing the outlet position of the sealing column 120. One approach is to directly press the top of the sealing column 120 against the inner top side of the upper cover 200 to block and seal the outlet. In this embodiment, the top of the sealing column 120 protrudes radially to form a sealing protrusion. When the upper cover 200 moves downward relative to the lower cover 100, the sealing protrusion is interference-fitted into the outlet. The top of the sealing column 120 protrudes outward to form a sealing protrusion for sealing. When sealing the inside of the bottle is required, the sealing protrusion is interference-fitted into the outlet position of the upper cover 200 to prevent solution leakage. In practical applications, if the sealing column 120 has a hollow internal structure, it can undergo a certain elastic deformation. When the sealing protrusion is interference-fitted into the outlet position, the sealing column 120 can undergo a certain elastic deformation, increasing the pressure against the outlet position and improving the sealing performance.

[0033] The invention also includes a flip cover 250, the bottom side of which may be provided with a clearance groove to avoid obstructing the structure of the upper cover 200 at the discharge port position and the upper extension of the sealing post 120. A connecting lug 260 connects one side of the flip cover 250 and one side of the upper cover 200. The flip cover 250 can be flipped up and down relative to the upper cover 200 through the connection with the connecting lug 260. When liquid extraction is not required, the flip cover 250 is flipped down to the top side of the upper cover 200 to block the discharge port, which can further improve the sealing performance. When liquid extraction is required, the flip cover 250 can be flipped up again to open. In practical applications, the flip cover 250, the connecting lug 260 and the upper cover 200 can be an integrally formed structure.

[0034] To further improve the sealing effect of the flip cover 250 at the outlet, in this embodiment, a discharge cylinder 270 is provided on the top side of the upper cover 200 at the outlet position, and a blocking cylinder 251 is provided on the bottom side of the flip cover 250. The blocking cylinder 251 is connected to the discharge cylinder 270. In practical applications, the top of the discharge cylinder 270 can abut against the bottom side of the flip cover 250, thereby strengthening the support of the flip cover 250 and improving the structural stability of the flip cover 250 connected to the upper cover 200. When the flip cover 250 is flipped down to the top side of the upper cover 200, the blocking cylinder 251 is inserted into the discharge cylinder 270. The cooperation of the two can further improve the sealing effect of the outlet and better maintain the flip cover 250 in the state of being flipped down to the upper cover 200.

[0035] Furthermore, the top of the discharge cylinder 270 is provided with a flared section, the inner radial direction of which gradually increases upward. The flared section facilitates the insertion of the plug cylinder 251 into the discharge cylinder 270 when the flip cover 250 is flipped down to the top side of the upper cover 200, thereby improving the ease of cooperation between the flip cover 250 and the upper cover 200.

[0036] After the upper cover 200 is moved upward relative to the lower cover 100, the sealing post 120 moves away from the discharge port. If the upper cover 200 and the lower cover 100 are rotated directly relative to each other at this time, the sealing post 120 will be misaligned with the discharge port. When the upper cover 200 needs to be moved down relative to the lower cover 100 to reset, the top of the sealing post 120 will press against the bottom side of the upper cover 200, making it impossible for the upper cover 200 to move down to reset. At this time, it is necessary to rotate the upper cover 200 and the lower cover 100 relative to each other to adjust the position of the sealing post 120. In order to solve this problem and improve the convenience of use, in this embodiment, the top of the sealing post 120 is formed with an anti-detachment head 121, and the outer radial direction of the anti-detachment head 121 gradually decreases upward. When the sealing column 120 opens the outlet, the anti-detachment head 121 remains in the outlet. The design of the anti-detachment head 121, which gradually narrows upward, ensures that the solution pours out from the gap between the anti-detachment head 121 and the outlet. Furthermore, the movement limit of the anti-detachment head 121 at the outlet prevents the sealing column 120 from being misaligned with the outlet. When the upper cover 200 moves downward relative to the lower cover 100, the shape of the anti-detachment head 121 can guide it, ensuring that the top of the sealing column 120 is properly connected to the outlet, thus sealing the outlet.

[0037] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A metering cap, characterized in that: include: The lower cover (100) has a partition (110) inside. The partition (110) divides the interior of the lower cover (100) into a metering cavity and a connecting cavity in the vertical direction. The partition (110) has a connecting port (111) and an upwardly extending sealing post (120). An upper cover (200) is fitted over the top outer side of the lower cover (100). An outlet is located on the top side of the upper cover (200) opposite the sealing post (120). A downwardly extending connecting post (210) is provided inside the upper cover (200). The bottom end of the connecting post (210) passes through the connecting opening (111) and is fitted with a sealing plate (221). When the upper cover (200) moves upward relative to the lower cover (100), the sealing plate (221)... 1) When the connecting port (111) is blocked, the top of the sealing post (120) releases the seal on the discharge port; when the upper cover (200) moves downward relative to the lower cover (100), the sealing piece (221) releases the blockage on the connecting port (111), the top of the sealing post (120) seals the discharge port, the bottom end of the connecting post (210) is connected to the connecting sleeve (222), and the sealing piece (221) is formed in the connecting sleeve (222). At the bottom end, the outer diameter of the sealing sheet (221) is larger than the inner diameter of the connecting port (111). An upper sealing cylinder (240) is provided inside the upper cover (200). The upper sealing cylinder (240) includes an upper variable diameter section and a lower variable diameter section connected to each other. The top end of the upper variable diameter section is connected to the inner top side of the upper cover (200). The outer diameter of the upper variable diameter section gradually increases from top to bottom, and the outer diameter of the lower variable diameter section gradually decreases from top to bottom. The connection between the upper variable diameter section and the lower variable diameter section... The joint abuts against the inner side of the lower cover (100). An annular gap is formed between the upper sealing cylinder (240) and the inner wall of the upper cover (200). When the upper cover (200) and the lower cover (100) are combined, the top of the lower cover (100) is inserted into the annular gap. The top of the sealing column (120) protrudes radially to form a sealing protrusion. When the upper cover (200) moves downward relative to the lower cover (100), the sealing protrusion is interference-fitted into the discharge port.

2. A metering cap according to claim 1, characterized in that: The lower cover (100) is provided with a variable diameter section (130) in the middle, and the outer diameter of the variable diameter section (130) gradually decreases from top to bottom. The bottom inner side of the upper cover (200) is provided with an annular protrusion (230). When the upper cover (200) moves upward relative to the lower cover (100), the annular protrusion (230) is closely attached to the outer side of the variable diameter section (130).

3. A metering cap according to claim 1, characterized in that: The lower cover (100) is provided with a lower sealing cylinder (140), which includes an upper sealing section and a lower sealing section connected to each other. The top end of the upper sealing section is connected to the bottom side of the separator (110). The outer diameter of the upper sealing section gradually increases from top to bottom, and the outer diameter of the lower sealing section gradually decreases from top to bottom.

4. A metering cap according to claim 1, characterized in that: It also includes a flip cover (250), on one side of which a connecting lug (260) is connected to one side of the top cover (200).

5. A metering cap according to claim 4, characterized in that: The top side of the cover (200) is provided with a discharge cylinder (270) located at the discharge port, and the bottom side of the flip cover (250) is provided with a blocking cylinder (251), which is connected to the discharge cylinder (270).

6. A metering cap according to claim 5, characterized in that: The top of the discharge cylinder (270) is provided with a flared section, and the inner radial direction of the flared section gradually increases upward.

7. A metering cap according to claim 1, characterized in that: The top of the sealing column (120) is formed with an anti-detachment head (121), which gradually decreases in size from the outer radial direction.

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