Sealing cover body for soft plastic container

Abstract

The utility model discloses a sealing cover body for a soft plastic container, which belongs to the technical field of water storage containers, and adopts the technical scheme that the sealing cover body comprises a main body cover and a sealing ring, the main body cover is in threaded connection with a water outlet end of the soft plastic container, the main body cover is provided with a blocking part through which gas can pass but liquid can be blocked, and the main body cover and the sealing ring are integrally formed through injection molding. The main body cover is in threaded connection with the water outlet end of the soft plastic container, the sealing ring is located in the main body cover, the sealing ring comprises an annular main body part and an annular lip part, and the annular lip part is located on the end face of the annular main body part. The water outlet end of the soft plastic container abuts against the surface of the annular main body part, the inner side wall of the water outlet end of the soft plastic container abuts against the outer side wall of the annular lip part, and the sealing cover body effectively guarantees the sealing effect and the sealing reliability of the water outlet end of the soft plastic container.

Description

Technical Field

[0001] This utility model belongs to the field of water storage container technology, and specifically relates to a sealing cap for a soft plastic container. Background Technology

[0002] Currently, in outdoor environments, water containers made of rigid materials are often inconvenient to carry, so soft plastic containers are more suitable for outdoor water storage and transportation.

[0003] Chinese Patent No. CN212233549U discloses a foldable water bag, including a water bag body. The upper end of the water bag body is provided with a handle, a water outlet, and a water bag cover. The water bag cover is closed to the water outlet. The water bag body is generally symmetrical in shape with the left and right ends. A raised folding line is provided around the center of both ends of the water bag body. The raised folding line is set in an arc shape and is offset outward from the inner end of the water bag body. One end of the water bag body can be folded inward along the edge of the raised folding line to enter the inner end of the other end to form a storage cavity.

[0004] The foldable water bag seals the water outlet by closing the water bag cap. Currently, to ensure an effective and reliable seal between the water bag cap and the water outlet to prevent liquid leakage, a sealing ring is usually installed inside the water bag cap. However, installing the sealing ring is not only cumbersome and requires a lot of manual labor, but also significantly increases production costs. In addition, manual installation of the sealing ring is prone to problems such as installation deviation, loosening or even falling off, which affects the sealing effect and the reliability of the seal. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a sealing cap for soft plastic containers. The technical problem to be solved by this utility model is: how to effectively ensure the sealing effect and the reliability of the seal.

[0006] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a sealing cap for a soft plastic container, comprising a main cap and a sealing ring, wherein the main cap is threadedly connected to the water outlet of the soft plastic container, the main cap is provided with a barrier portion that allows gas to pass through but blocks liquid from passing through, the main cap and the sealing ring are integrally injection molded, and the sealing ring is located inside the main cap, the sealing ring comprising an annular main portion and an annular lip portion, the annular lip portion being located on the end face of the annular main portion, when the main cap is threadedly connected to the water outlet of the soft plastic container, the water outlet of the soft plastic container abuts against the surface of the annular main portion and the inner sidewall of the water outlet of the soft plastic container abuts against the outer sidewall of the annular lip portion.

[0007] In the aforementioned sealing cap for a soft plastic container, the sealing ring is made of rubber or silicone, and the outer wall of the annular lip is provided with an inclined surface, the diameter of which gradually decreases from the end face of the annular body to the top of the annular lip.

[0008] In the above-mentioned sealing cap for a soft plastic container, the barrier portion is integrally injection molded with the main cap, and the barrier portion is located in the middle of the main cap. The barrier portion is made of silicone film.

[0009] In the aforementioned sealing cap for a soft plastic container, the end of the main cap is provided with a plurality of arc-shaped grooves, which are evenly distributed along the circumference of the main cap.

[0010] In the aforementioned type of sealing cap for a soft plastic container, the main cap has a cross-shaped support for supporting the barrier portion.

[0011] In the aforementioned type of sealing cap for a soft plastic container, the outer side wall of the main cap is provided with several reinforcing ribs.

[0012] In the aforementioned sealing cap for a soft plastic container, an annular protrusion 1 extends from the upper surface of the main cap, with the center of the annular protrusion 1 facing the barrier portion, and an annular protrusion 2 extends from the inner bottom surface of the main cap, with the center of the annular protrusion 2 facing the barrier portion.

[0013] In the aforementioned sealing cap for a soft plastic container, an annular sealing portion is provided at the end of the annular lip portion. When the main cap is threadedly connected to the water outlet end of the soft plastic container, the outer wall of the annular sealing portion abuts against the inner wall of the water outlet end of the soft plastic container, and the annular sealing portion is located at the end of the annular lip portion away from the annular main body portion.

[0014] In the aforementioned sealing cap for a soft plastic container, the cross-section of the annular sealing portion is semi-circular or triangular.

[0015] In the aforementioned sealing cap for a soft plastic container, the annular protrusion encloses and forms a funnel-shaped opening.

[0016] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0017] 1. The water outlet of the soft plastic container is sealed with a sealing ring, and the main cover and the sealing ring are integrally injection molded, which eliminates the process of installing the sealing ring, saves the labor cost required for assembly, and ensures the stability of the sealing ring, thereby effectively ensuring the sealing effect and the reliability of the sealing.

[0018] 2. The sealing ring includes an annular body and an annular lip. The annular lip is located on the end face of the annular body. When the main body cover is threaded to the water outlet of the soft plastic container, the water outlet of the soft plastic container abuts against the surface of the annular body and the inner wall of the water outlet of the soft plastic container abuts against the outer wall of the annular lip. This can effectively improve the sealing performance between the water outlet of the soft plastic container and the main body cover.

[0019] 3. Due to the deformable nature of flexible plastic containers, by providing a barrier on the main cover that allows gas to pass through but blocks liquid from passing through, external gas can enter the flexible plastic container through the barrier, thereby preventing the flexible plastic container from collapsing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0021] Figure 2 This is a schematic diagram of the structure from another angle of Embodiment 1;

[0022] Figure 3 This is a cross-sectional view of Embodiment 1;

[0023] Figure 4 This is a cross-sectional view of Example 2;

[0024] Figure 5 This is a cross-sectional view of Example 3;

[0025] Figure 6 This is a partial structural cross-sectional view of Embodiment 4.

[0026] Reference numerals: 1. Main body cover; 2. Sealing ring; 21. Annular main body; 22. Annular lip; 3. Barrier part; 4. Inclined surface; 5. Arc groove; 6. Cross support body; 7. Reinforcing rib; 8. Annular protrusion one; 9. Annular protrusion two; 10. Annular sealing part; 11. Trumpet-shaped opening. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] A sealing cap for a flexible plastic container, such as Figures 1 to 3As shown, the device includes a main cover 1 and a sealing ring 2. The main cover 1 is threadedly connected to the water outlet of the soft plastic container. The main cover 1 is provided with a barrier part 3 that allows gas to pass through but blocks liquid from passing through. In this embodiment, the barrier part 3 is made of silicone film. The barrier part 3 and the main cover 1 are integrally injection molded, and the barrier part 3 is located in the middle of the main cover 1. It should be noted that the barrier part 3 and the main cover 1 are directly integrally injection molded, which eliminates the installation process of the barrier part 3. This not only ensures the stability of the barrier part 3 and improves the reliability of the structure, but also saves the labor cost required for assembly and reduces the production cost.

[0029] Furthermore, the main cover 1 has a cross support 6 for supporting the barrier part 3. The barrier part 3 is supported by the cross support 6, thereby ensuring the stability of the barrier part 3 and reducing the risk of the barrier part 3 being deformed or damaged due to force.

[0030] An annular protrusion 18 extends from the upper surface of the main cover 1, with the center of the annular protrusion 18 directly facing the barrier part 3. An annular protrusion 29 extends from the inner bottom surface of the main cover 1, with the center of the annular protrusion 29 directly facing the barrier part 3. The annular protrusion 18 and the annular protrusion 29 can effectively improve the structural strength of the outer side of the barrier part 3, and the annular protrusion 18 and the annular protrusion 29 can guide the gas through.

[0031] The main cover 1 and the sealing ring 2 are integrally injection molded, and the sealing ring 2 is located inside the main cover 1. In this embodiment, the sealing ring 2 is made of rubber or silicone. It should be noted that the main cover 1 and the sealing ring 2 are directly integrally injection molded, which eliminates the process of installing the sealing ring 2, saves the labor cost required for assembly, and ensures the stability of the sealing ring 2, thereby effectively ensuring the sealing effect and the reliability of the sealing.

[0032] The sealing ring 2 includes an annular body portion 21 and an annular lip portion 22. The annular lip portion 22 is located on the end face of the annular body portion 21. When the main body cover 1 is threadedly connected to the water outlet end of the soft plastic container, the water outlet end of the soft plastic container abuts against the surface of the annular body portion 21 and the inner side wall of the water outlet end of the soft plastic container abuts against the outer side wall of the annular lip portion 22. That is, the annular body portion 21 and the annular lip portion 22 form a double seal for the water outlet end of the soft plastic container, thereby further improving the sealing effect and the reliability of the seal.

[0033] An inclined surface 4 is provided on the outer wall of the annular lip portion 22. The diameter of the inclined surface 4 gradually decreases from the end face of the annular main body portion 21 to the top of the annular lip portion 22. The inner wall of the water outlet end of the soft plastic container will gradually squeeze the annular lip portion 22 inward along the inclined surface 4, that is, the contact between the two is tighter, which can further improve the sealing effect and ensure the reliability of the seal.

[0034] The end of the main cover 1 is provided with several arc-shaped grooves 5. The arc-shaped grooves 5 are evenly distributed along the circumference of the main cover 1. This not only reduces material consumption, but also effectively reduces the contact area between the end of the main cover 1 and the soft plastic container, thus avoiding adhesion.

[0035] The outer wall of the main cover 1 is provided with several reinforcing ribs 7, which are evenly distributed along the circumference of the main cover 1 to enhance the structural strength of the main cover 1.

[0036] Example 2:

[0037] The difference between Example 2 and Example 1 is that, as Figure 4 As shown, an annular sealing part 10 is provided at the end of the annular lip portion 22. When the main body cover 1 is threadedly connected to the water outlet end of the soft plastic container, the outer wall of the annular sealing part 10 abuts against the inner wall of the water outlet end of the soft plastic container. The annular sealing part 10 is located at the end of the annular lip portion 22 away from the annular main body portion 21. Preferably, the cross-section of the annular sealing part 10 is semi-circular. The annular sealing part 10 with a semi-circular cross-section is located at the end of the annular lip portion 22 away from the annular main body portion 21. This not only further forms a seal on the water outlet end of the soft plastic container, further improving the sealing effect and the reliability of the seal, but also effectively ensures the structural strength of the end of the annular lip portion 22, thereby improving the stability and reliability of the structure.

[0038] Example 3:

[0039] The difference between Example 3 and Example 2 is that, as Figure 5 As shown, the cross-section of the annular sealing part 10 is triangular. Due to its sharp structure, the triangular annular sealing part 10 has a better sealing effect on the water outlet of the soft plastic container.

[0040] Example 4:

[0041] The difference between Example 4 and Examples 2 and 3 is that, as Figure 6 As shown, the annular protrusion 8 surrounds and forms a funnel-shaped opening 11. The funnel-shaped opening 11 can accommodate gas more widely, reducing the obstruction of gas before entering the barrier 3, making it easier to guide gas through the barrier 3, reducing intake resistance, making gas flow more unobstructed, and avoiding noise caused by poor gas flow when passing through the barrier 3.

[0042] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A sealing cap for a flexible plastic container, characterized in that: The device includes a main cover (1) and a sealing ring (2). The main cover (1) is threadedly connected to the water outlet of the soft plastic container. The main cover (1) is provided with a barrier part (3) that allows gas to pass through but blocks liquid from passing through. The main cover (1) and the sealing ring (2) are integrally injection molded, and the sealing ring (2) is located inside the main cover (1). The sealing ring (2) includes an annular main body part (21) and an annular lip part (22). The annular lip part (22) is located on the end face of the annular main body part (21). When the main cover (1) is threadedly connected to the water outlet of the soft plastic container, the water outlet of the soft plastic container abuts against the surface of the annular main body part (21), and the inner side wall of the water outlet of the soft plastic container abuts against the outer side wall of the annular lip part (22).

2. The sealing cap for a flexible plastic container according to claim 1, characterized in that: The sealing ring (2) is made of rubber or silicone. The outer wall of the annular lip (22) is provided with an inclined surface (4). The diameter of the inclined surface (4) gradually decreases from the end face of the annular body (21) to the top of the annular lip (22).

3. A sealing cap for a flexible plastic container according to any one of claims 1 or 2, characterized in that: The barrier part (3) is integrally injection molded with the main body cover (1), and the barrier part (3) is located in the middle of the main body cover (1). The barrier part (3) is made of silicone film.

4. A sealing cap for a flexible plastic container according to any one of claims 1 or 2, characterized in that: The end of the main cover (1) is provided with a plurality of arc-shaped grooves (5), and the plurality of arc-shaped grooves (5) are evenly distributed along the circumference of the main cover (1).

5. A sealing cap for a flexible plastic container according to claim 3, characterized in that: The main cover (1) has a cross support (6) for supporting the barrier (3).

6. A sealing cap for a flexible plastic container according to any one of claims 1 or 2, characterized in that: The outer side wall of the main cover (1) is provided with several reinforcing ribs (7).

7. A sealing cap for a flexible plastic container according to claim 3, characterized in that: An annular protrusion 1 (8) extends from the upper surface of the main cover (1), with the center of the annular protrusion 1 (8) facing the barrier part (3). An annular protrusion 2 (9) extends from the inner bottom surface of the main cover (1), with the center of the annular protrusion 2 (9) facing the barrier part (3).

8. A sealing cap for a flexible plastic container according to claim 7, characterized in that: An annular sealing part (10) is provided at the end of the annular lip (22). When the main body cover (1) is threaded to the water outlet of the soft plastic container, the outer wall of the annular sealing part (10) abuts against the inner wall of the water outlet of the soft plastic container, and the annular sealing part (10) is located at the end of the annular lip (22) away from the annular main body (21).

9. A sealing cap for a flexible plastic container according to claim 8, characterized in that: The cross-section of the annular sealing part (10) is semi-circular or triangular.

10. A sealing cap for a flexible plastic container according to claim 9, characterized in that: The annular protrusion (8) encloses a funnel-shaped opening (11).

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