Adjustable pour volume poly liquid inner plug
By designing an adjustable-aperture polymer inner plug, the problem of single-hole inner plug bottles being unable to adapt to viscosity changes was solved, enabling dynamic adjustment of flow rate and improving user experience and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUCHENG PLASTIC PROD (JIANGMEN) CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-06-26
Smart Images

Figure CN224410143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bottle stopper technology, and in particular to an adjustable pouring volume polymer liquid inner stopper. Background Technology
[0002] Traditional single-hole stopper bottles are widely used for packaging liquids or semi-fluid products. Typically, the choice of stopper orifice size depends on the viscosity characteristics of the contents: high-viscosity products (such as shampoo and shower gel) require larger orifices to reduce flow resistance and facilitate pouring; while low-viscosity products (such as essential oils and pharmaceuticals) require smaller orifices to precisely control flow and avoid waste. However, the orifice size of existing single-hole stopper bottles is fixed during manufacturing, limiting their applicability—the same stopper bottle cannot accommodate different contents with significantly different viscosities. Using a stopper bottle originally designed for high-viscosity liquids for low-viscosity liquids will result in over-pouring; conversely, it will lead to difficulty in pouring.
[0003] Furthermore, users may encounter scenarios in actual use where the viscosity of the contents changes (such as viscosity fluctuations caused by temperature) or where they need to dispense products of different viscosities. Fixed-aperture stopper bottles cannot dynamically adjust to meet these needs. Therefore, there is an urgent need for a stopper bottle structure that can adjust the apex size according to the viscosity of the contents to improve versatility, user experience, and resource utilization. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an adjustable pouring volume polymer liquid inner plug, which can easily adjust the orifice diameter and facilitate pouring out contents of different viscosities.
[0005] An adjustable pouring volume polymer inner plug according to an embodiment of the present invention includes:
[0006] The main body has a movably connected cap. The main body has a first channel and a third channel, with the third channel surrounding the outer periphery of the first channel. The cap has a stopper and a second channel. The sum of the cross-sectional areas of the first and third channels is greater than the cross-sectional area of the second channel. When the cap is opened, the contents of the bottle can flow out through the first and third channels. When the cap is closed on the main body, the stopper can be inserted into the first channel, and the contents can flow out through the second channel.
[0007] The outer end face of the main body is provided with a positioning part, which has a notch for pouring out the contents, and the inner peripheral wall of the positioning part is provided with a conical guide surface.
[0008] An adjustable pouring volume polymer inner plug according to an embodiment of the present invention has at least the following beneficial effects:
[0009] This embodiment includes a main body with a movably connected cap. The main body has a first channel and a third channel, with the third channel surrounding the outer periphery of the first channel. The cap has a stopper and a second channel. The sum of the cross-sectional areas of the first and third channels is greater than the cross-sectional area of the second channel. When the cap is opened, the contents of the bottle can flow out through the first and third channels. When the cap is closed on the main body, the stopper can be inserted into the first channel, allowing the contents to flow out through the second channel. Thus, by opening and closing the cap, the cross-sectional area of the channels is changed, i.e., the orifice diameter is changed, to allow for the pouring of contents of different viscosities. The outer end face of the main body has a positioning part with a notch for pouring the contents. The inner peripheral wall of the positioning part has a conical guide surface to guide the contents to be poured out from the notch.
[0010] According to some embodiments of the present invention, the first channel extends through the plug, and when the cover is placed on the body, the outer peripheral wall of the plug abuts against the inner peripheral wall of the first channel.
[0011] According to some embodiments of the present invention, at least three spaced third channels are provided on the outer periphery of the first channel, and a connecting strip is provided between two adjacent third channels.
[0012] According to some embodiments of the present invention, the main body is provided with a support strip, which is connected to the side of the connecting strip facing away from the cover.
[0013] According to some embodiments of the present invention, the main body is provided with a connecting pipe, the first channel is located inside the connecting pipe, and the support strip is connected to the outer peripheral wall of the connecting pipe.
[0014] According to some embodiments of the present invention, the main body is provided with a reinforcing ring, which is reinforced and surrounds the outer periphery of the connecting pipe, and the reinforcing ring is connected to the end of the support bar that is away from the connecting pipe.
[0015] According to some embodiments of the present invention, the outer end face of the main body is provided with a positioning part, the positioning part protrudes outward along the axial direction of the main body, and the cover is provided with a positioning ring. When the cover is placed on the main body, the outer peripheral wall of the positioning ring abuts against the inner peripheral wall of the positioning part.
[0016] According to some embodiments of the present invention, a connecting piece is provided between the cover and the body to connect the two. The connecting piece can be elastically bent to realize the opening and closing function of the cover on the body.
[0017] According to some embodiments of the present invention, the notch and the connecting piece are arranged opposite each other along the radial direction of the body.
[0018] According to some embodiments of the present invention, the outer end wall of the cover away from the main body is provided with a boss, and the second channel has a chamfer at one end of the outer end face of the boss.
[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0021] Figure 1 This is an isometric view of an adjustable pouring volume polymer inner plug according to an embodiment of the present invention;
[0022] Figure 2 This is a cross-sectional view of an adjustable pouring volume polymer inner plug according to an embodiment of the present invention;
[0023] Figure 3 This is a cross-sectional view of the cover and body in an embodiment of the present invention.
[0024] Figure 4 This is a schematic diagram of the positioning part and the notch in an embodiment of this utility model.
[0025] Figure label:
[0026] Body 100; First channel 101; Third channel 102; Positioning part 103; Notch 104; Guide surface 105; Support bar 106; Reinforcing ring 107; Connecting pipe 108; Connecting bar 109; Cover 110; Plug 111; Second channel 112; Positioning ring 113; Connecting piece 114; Boss 115. Detailed Implementation
[0027] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.
[0029] In the description of this utility model, "several" means one or more, "multiple" 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. If "first" or "second" is used in the description, it is only for the purpose of 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.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] Reference Figures 1 to 3 An adjustable pouring volume polymer inner stopper according to an embodiment of this utility model includes a body 100, a cover 110 movably connected to the body 100, and a connecting piece 114 connecting the cover 110 and the body 100. The connecting piece 114 can be elastically bent to realize the opening and closing function of the cover 110 on the body 100, and to facilitate the user to close the cover 110 again after opening. The body 100 has a first channel 101 and a third channel 102, the cover 110 has a second channel 112, the third channel 102 is wrapped around the outer periphery of the first channel 101, the cover 110 has a stopper head 111, and the second channel 112 is provided on the cover 110. The sum of the cross-sectional areas of the first channel 101 and the third channel 102 is greater than the cross-sectional area of the second channel 112. When the cover 110 is opened, the contents of the bottle can flow out from the first channel 101 and the third channel 102. When the cover 110 is closed on the body 100, the plug 111 can be inserted into the first channel 101, and the contents can flow out from the second channel 112. Thus, by opening and closing the cover 110, the cross-sectional area of the channel is changed, that is, the aperture is changed, so that contents of different viscosities can be poured out.
[0032] Specifically, in this embodiment, the body 100, connecting piece 114, and cover 110 can be injection molded from food-grade PP or PE material. A connecting pipe 108 is located at the center of the body 100, and the connecting pipe 108 has a through-hole first channel 101. Three third channels 102 are evenly arranged around the outer periphery of the first channel 101, and adjacent third channels 102 are connected by connecting strips 109 to maintain structural stability. It is understood that a stopper 111 matching the first channel 101 is located at the center of the bottom of the cover 110. When the cover 110 is closed, the stopper 111 is inserted into the first channel 101, and the outer peripheral wall of the stopper 111 forms a tight fit with the inner peripheral wall of the first channel 101. At this time, the liquid can only flow out through the second channel 112 on the cover 110, thereby achieving adjustment by reducing the outlet diameter. It is understood that the cross-sectional area of the second channel 112 is smaller than that of the first channel 101, which is suitable for precise control of low-viscosity liquids.
[0033] Understandably, to improve the overall structural strength, a three-dimensional support system is installed within the main body 100, including a support bar 106 and a reinforcing ring 107. The support bar 106 is connected to the side of the connecting bar 109 facing away from the cover 110, and the reinforcing ring 107 is wrapped around the outer periphery of the connecting pipe 108 and connected to the end of the support bar 106 facing away from the connecting pipe 108. This design ensures unobstructed passage while effectively resisting the internal pressure and torque generated when liquid is poured, preventing structural deformation. Simultaneously, it enhances the structural strength of the connecting pipe 108, thus preventing deformation of the connecting pipe 108 when the plug 111 enters and exits the first channel 101 during the opening and closing of the cover 110.
[0034] Furthermore, the top edge of the main body 100 is provided with an upwardly extending annular positioning portion 103. Correspondingly, the cover 110 is provided with a positioning ring 113. When the cover 110 is placed on the main body 100, the outer peripheral wall of the positioning ring 113 abuts against the inner peripheral wall of the positioning portion 103, which can improve the stability of the cover 110 when it is closed and prevent the cover 110 from loosening or falling off. Furthermore, referring to... Figure 4 The positioning part 103 is provided with a notch 104 for pouring out the contents. Simultaneously, the inner peripheral wall of the positioning part 103 is provided with a conical guide surface 105, which guides the contents to flow towards the notch 104, facilitating directional outflow. Furthermore, the notch 104 and the connecting piece 114 are arranged radially opposite to each other along the body 100, guiding the user to pour out the contents along the notch 104 opposite to the connecting piece 114 when pouring the bottle.
[0035] Furthermore, the outer end wall of the cover 110 away from the main body 100 is provided with a boss 115, and the second channel 112 has a chamfer at one end of the outer end face of the boss 115. During the pouring process, the contents can adhere to the boss 115, reducing the possibility of the contents spreading to the surrounding area of the cover 110 and improving the convenience of cleaning.
[0036] In practical use, when high-viscosity liquids need to be poured, the user simply opens the cap 110, at which point the first channel 101 and the third channel 102 are fully open, forming a large flow area, allowing high-viscosity liquids such as shampoo and shower gel to flow out smoothly. When handling low-viscosity liquids, the cap 110 is closed, and the stopper 111 blocks the first channel 101 and the third channel 102, allowing the liquid to flow out only through the smaller second channel 112 on the cap 110, achieving precise control.
[0037] Compared with existing technologies, this adjustable pouring volume polymer inner plug solves the long-standing problem that packaging containers cannot adapt to liquids of different viscosities. It achieves intelligent flow regulation through a simple mechanical structure, which not only improves the user experience but also reduces product waste caused by incompatible packaging.
[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. An adjustable pour volume poly liquid inner stopper, installed in a bottle body, characterized in that, include: The main body has a movably connected cap. The main body has a first channel and a third channel, with the third channel surrounding the outer periphery of the first channel. The cap has a stopper and a second channel. The sum of the cross-sectional areas of the first channel and the third channel is greater than the cross-sectional area of the second channel. When the cap is opened, the contents of the bottle can flow out through the first channel and the third channel. When the cap is closed on the main body, the stopper can be inserted into the first channel, and the contents can flow out through the second channel. The outer end face of the body is provided with a positioning part, the positioning part is provided with a notch for pouring out the contents, and the inner peripheral wall of the positioning part is provided with a conical guide surface.
2. A variable pour volume poly liquid core plug according to claim 1 wherein, The first channel extends through the plug, and when the cover is placed on the body, the outer peripheral wall of the plug abuts against the inner peripheral wall of the first channel.
3. The adjustable pouring volume polymer inner plug according to claim 1, characterized in that, The outer periphery of the first channel is provided with at least three spaced-apart third channels, and there is a connecting strip between two adjacent third channels.
4. The adjustable pouring volume polymer inner plug according to claim 3, characterized in that, The main body is provided with a support bar, which is connected to the side of the connecting bar facing away from the cover.
5. The adjustable pouring volume polymer inner plug according to claim 4, characterized in that, The main body is provided with a connecting pipe, the first channel is located inside the connecting pipe, and the support bar is connected to the outer peripheral wall of the connecting pipe.
6. The adjustable pouring volume polymer inner plug according to claim 5, characterized in that, The main body is provided with a reinforcing ring, which surrounds the outer periphery of the connecting pipe, and the reinforcing ring is connected to the end of the support bar opposite to the connecting pipe.
7. The adjustable pouring volume polymer inner plug according to claim 1, characterized in that, The positioning part protrudes outward along the axial direction of the body, and the cover is provided with a positioning ring. When the cover is placed on the body, the outer peripheral wall of the positioning ring abuts against the inner peripheral wall of the positioning part.
8. The adjustable pouring volume polymer inner plug according to claim 1, characterized in that, A connecting piece is provided between the cover and the body to connect the two. The connecting piece can be elastically bent to realize the opening and closing function of the cover on the body.
9. An adjustable pouring volume polymer inner plug according to claim 8, characterized in that, The notch and the connecting piece are arranged radially opposite each other along the body.
10. An adjustable pouring volume polymer inner plug according to claim 1, characterized in that, The cover has a protrusion on its outer end wall away from the main body, and the second channel has a chamfer at one end of the outer end face of the protrusion.