Plastic bottle for dosing out a fluid
By incorporating a metering structure inside the plastic bottle opening, including a metering sleeve and a sealing plug, the problem of oil spillage during pouring is solved, achieving the effect of metered addition and flexible operation.
Patent Information
- Application Number
- CN202521432808.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-07-09
AI Technical Summary
Existing plastic bottles cannot dispense a precise amount of engine oil, leading to spillage and waste.
The bottle opening is equipped with a metering structure, including a metering sleeve and a sealing plug. Through the cooperation of a slide rod and a tension spring, the oil is metered out and sealed.
It enables precise metered oil addition, preventing spillage and waste, and can be disassembled for flexible use when metered addition is not required.
Smart Images

Figure CN224393421U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a plastic bottle, specifically a plastic bottle capable of dispensing a measured amount of fluid, and belongs to the field of plastic bottle technology. Background Technology
[0002] Engine oil bottles are specialized containers used for storing, transporting, and refilling engine oil. They are widely used in automotive maintenance, machinery maintenance, and other scenarios. Their design must meet the requirements of sealing, portability, leak prevention, and adaptability to different refilling needs. They are usually made of plastic bottles made of polymer materials.
[0003] However, plastic bottles do not have a metering pouring component when storing engine oil. When pouring engine oil into the equipment, it is easy for the oil to overflow and be wasted. Therefore, there is an urgent need for a plastic bottle that can dispense fluid in a metered manner to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a plastic bottle that can dispense fluid in a metered manner in order to solve the above problems. At the same time, the oil inside the metering sleeve flows out, which facilitates the metered addition of oil and prevents the oil from overflowing and being wasted during the oil addition process. In addition, if metered addition is not required, the metering sleeve can be removed, making the operation flexible and convenient.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a plastic bottle capable of dispensing fluid in a quantitative manner, comprising a bottle body, a bottle mouth at the top of the bottle body, and a bottle cap threadedly connected to the bottle mouth; the bottle mouth is provided with a quantitative structure, the quantitative structure comprising a quantitative sleeve, the quantitative sleeve being threadedly connected to the inside of the bottle mouth, the quantitative sleeve being provided with two sealing plugs inside, the sealing plugs being frustoconical, the quantitative sleeve having inclined surfaces at both ends, and a sliding rod being fixed between the two quantitative sleeves.
[0006] Preferably, in order to facilitate pouring of engine oil and allow the engine oil to gather towards the pouring port, the top of the metering sleeve is inclined, and the top of the metering sleeve forms a pouring port.
[0007] Preferably, in order to improve the sealing between the metering sleeve and the bottle mouth, a sealing ring is provided at the top of the bottle mouth, and the metering sleeve abuts against the sealing ring.
[0008] Preferably, in order to facilitate the guidance of the slide rod, a support plate is provided in the middle of the metering sleeve, the slide rod and the support plate are slidably connected, and two fan-shaped through holes are provided on the support plate.
[0009] Preferably, in order to facilitate the sealing of the bottle mouth by the bottom sealing plug, a tension spring is fixed between the bottom sealing plug and the support plate.
[0010] Preferably, in order to facilitate the handling of the bottle, the bottle body is provided with grooves on both sides, and the bottle cap is provided with protrusions arranged in a circular array.
[0011] The beneficial effects of this utility model are as follows: A metering sleeve is threaded inside the bottle mouth, and two sealing plugs are provided inside the metering sleeve. The sealing plugs are frustum-shaped, and the two ends of the metering sleeve are provided with bevels. A sliding rod is fixed between the two metering sleeves. When the bottle is inverted, pressing one sealing plug away from the bottle body causes it to abut against the metering sleeve to achieve a seal, while the other sealing plug separates from the metering sleeve, allowing the oil inside the bottle to enter the metering sleeve. Then, tilting the bottle body and loosening one sealing plug away from the bottle body causes it to separate from the metering sleeve, while the other sealing plug abuts against the metering sleeve, preventing the oil inside the bottle from continuing to flow out. At the same time, the oil inside the metering sleeve flows out, facilitating the metered addition of oil and preventing spillage and waste during the oil addition process. In addition, if metered addition is not required, the metering sleeve can be removed, making the operation flexible and convenient. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is an overall cross-sectional view of the present invention;
[0014] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.
[0015] Figure 4 This is an exploded view of the present invention;
[0016] Figure 5 for Figure 4 The diagram shows an enlarged view of section B.
[0017] In the diagram: 1. Bottle body; 2. Groove; 3. Metering structure; 301. Metering sleeve; 302. Sealing ring; 303. Inclined surface; 304. Sealing plug; 305. Slide rod; 306. Support plate; 307. Tension spring; 308. Through hole; 4. Bottle mouth; 5. Bottle cap; 6. Protrusion. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-5As shown, a plastic bottle capable of dispensing a measured amount of fluid includes a bottle body 1, a bottle mouth 4 at the top of the bottle body 1, and a bottle cap 5 threadedly connected to the bottle mouth 4. The bottle mouth 4 has a metering structure 3 inside, which includes a metering sleeve 301 threadedly connected to the inside of the bottle mouth 4. The metering sleeve 301 has two sealing plugs 304 inside, each sealing plug 304 being frustoconical in shape. The two ends of the metering sleeve 301 have inclined surfaces 303, and a sliding rod 305 is fixed between the two metering sleeves 301. A support plate 306 is located in the middle of the metering sleeve 301, and the sliding rod 305 and the support plate 306 are slidably connected. The support plate 306 has two fan-shaped through holes 308 to facilitate the passage of engine oil. A tension spring 307 is fixed between one of the sealing plugs 304 at the bottom and the support plate 306. When metered dispensing of engine oil is required, the metering sleeve 301 is threadedly connected to the bottle mouth 4. The metering sleeve 301 abuts against the sealing ring 302. During use, hold the bottle body 1, invert it, and press one sealing plug 304 away from the bottle body 1. This sealing plug 304 abuts against the metering sleeve 301 to achieve a seal. The other sealing plug 304 separates from the metering sleeve 301. The sealing plug 304 drives the slide rod 305 and the support plate 306 to slide, causing the tension spring 307 to extend, allowing the engine oil inside the bottle body 1 to enter the metering sleeve 301. Then, tilt the bottle body 1 and release one sealing plug 304 away from the bottle body 1. This sealing plug 304 separates from the metering sleeve 301, while the other sealing plug 304 abuts against the metering sleeve 301, preventing further leakage of engine oil from the bottle body 1. Simultaneously, engine oil flows out from the metering sleeve 301, facilitating metered oil addition and preventing spillage and waste during oil addition. If metered addition is not needed, the metering sleeve 301 can be removed. The operation is flexible and convenient.
[0020] As a technical optimization of this utility model, the top of the metering sleeve 301 is inclined, and the top of the metering sleeve 301 forms a pouring port; this facilitates pouring out the engine oil and allows the engine oil to gather towards the pouring port.
[0021] As a technical optimization of this utility model, a sealing ring 302 is provided at the top of the bottle mouth 4, and the metering sleeve 301 abuts against the sealing ring 302; it is optional whether the metering structure 3 is needed. If the metering structure 3 is not needed, the metering structure 3 can be removed from the bottle mouth 4, the bottle mouth 4 is sealed, and then the bottle cap 5 is rotated to seal the bottle mouth 4. The bottle cap 5 abuts against the sealing ring 302 to enhance the sealing performance. If it is necessary to pour the machine oil in a metered manner, the metering sleeve 301 is threadedly connected to the bottle mouth 4 so that the metering sleeve 301 abuts against the sealing ring 302.
[0022] As a technical optimization of this utility model, the bottle body 1 is provided with grooves 2 on both sides to facilitate picking up the bottle body 1, and the bottle cap 5 is provided with protrusions 6 in a circular array to facilitate driving the bottle cap 5.
[0023] In use, this utility model allows for selection of whether the metering structure 3 is needed. If the metering structure 3 is not needed, it can be removed from the bottle mouth 4. The bottle mouth 4 is then sealed, and the bottle cap 5 is rotated to seal the bottle mouth 4. The bottle cap 5 abuts against the sealing ring 302, enhancing the sealing performance. If metered pouring of machine oil is required, the metering sleeve 301 is threadedly connected to the bottle mouth 4, so that the metering sleeve 301 abuts against the sealing ring 302. During use, hold the bottle body 1, invert the bottle body 1, and press one sealing plug 304 away from the bottle body 1. This sealing plug 304 abuts against the metering sleeve 301 to achieve a seal, while the other sealing plug 304 separates from the metering sleeve 301. The sealing plug 304 drives the slide rod 305 and the support plate 30 6. Sliding, the sealing plug 304 drives the tension spring 307 to extend, allowing the oil inside the bottle 1 to enter the metering sleeve 301. Then, the bottle 1 is tilted, releasing one sealing plug 304 away from the bottle 1. This sealing plug 304 separates from the metering sleeve 301, while the other sealing plug 304 abuts against the metering sleeve 301, preventing the oil inside the bottle 1 from continuing to flow out. At the same time, the oil inside the metering sleeve 301 flows out, facilitating the metered addition of oil and preventing spillage and waste during the oil addition process. If metered addition is not required, the metering sleeve 301 can be removed. The operation is flexible and convenient. The top of the metering sleeve 301 is tilted, and the top of the metering sleeve 301 forms a pouring port, which facilitates pouring out the oil and allows the oil to gather towards the pouring port.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A plastic bottle capable of dispensing a measured amount of fluid, comprising a bottle body (1), a bottle mouth (4) at the top of the bottle body (1), and a bottle cap (5) threadedly connected to the bottle mouth (4); characterized in that: The bottle mouth (4) is provided with a metering structure (3) inside. The metering structure (3) includes a metering sleeve (301). The metering sleeve (301) is threaded inside the bottle mouth (4). The metering sleeve (301) is provided with two sealing plugs (304) inside. The sealing plugs (304) are in the shape of a frustum. The two ends of the metering sleeve (301) are provided with inclined surfaces (303). A sliding rod (305) is fixed between the two metering sleeves (301).
2. The plastic bottle capable of dispensing a measured amount of fluid according to claim 1, characterized in that: The top of the metering sleeve (301) is inclined, and the top of the metering sleeve (301) forms a pouring opening.
3. The plastic bottle capable of dispensing a measured amount of fluid according to claim 1, characterized in that: The top of the bottle mouth (4) is provided with a sealing ring (302), and the metering sleeve (301) abuts against the sealing ring (302).
4. The plastic bottle capable of dispensing a measured amount of fluid according to claim 1, characterized in that: The metering sleeve (301) is provided with a support plate (306) in the middle, and the slide rod (305) and the support plate (306) are slidably connected.
5. The plastic bottle capable of dispensing a measured amount of fluid according to claim 4, characterized in that: The support plate (306) has two fan-shaped through holes (308).
6. The plastic bottle capable of dispensing a measured amount of fluid according to claim 4, characterized in that: A tension spring (307) is fixed between a sealing plug (304) at the bottom and a support plate (306).
7. The plastic bottle capable of dispensing a measured amount of fluid according to claim 1, characterized in that: The bottle body (1) has grooves (2) on both sides, and the bottle cap (5) has protrusions (6) arranged in a circular array on the circumference.
