Negative pressure ball sealing structure

Abstract

The utility model discloses a negative pressure ball sealing structure, which comprises a balloon and a sealing structure, the sealing structure comprises an inner gland and an outer gland, the upper part of the balloon is provided with a discharge port, the lower part of the discharge port is provided with a limiting convex ring, the inner gland comprises a convex head part, an embedded section and an abutting section, the lower surface of the limiting convex ring is matched with the upper surface of the abutting section, the outer gland penetrates through the convex head part and then is embedded outside the embedded section, and the combination height of the limiting convex ring and the outer gland is larger than the length of the embedded section, so that the top of the outer gland abuts against the convex head part. A plurality of supporting ribs are evenly distributed in the annular cover part and make contact with the balloon. The outer gland comprises an embedded part and an annular cover part, the annular cover part covers the top of the balloon, the top of the embedded part abuts against the protruding head part, and the inner diameter of the embedded part is sequentially increased from top to bottom. A gasket is arranged on the upper surface of the balloon and arranged between the balloon and the outer gland. The problems that an existing negative pressure ball is complex in assembling process, a sealing structure is prone to falling off, and the sealing performance is poor are solved.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure ball structures, specifically a negative pressure ball sealing structure. Background Technology

[0002] Negative pressure balls consist of a bladder and a sealing structure. Currently, the most common sealing structure is the threaded seal. Due to limited demand, manual assembly is currently the primary method. Manual assembly of threaded seals can easily cause muscle fatigue and injury to workers. Furthermore, due to individual differences in personnel, inconsistent tightness can occur during assembly. Snap-fit ​​structures can improve the problems associated with threaded assembly, but conventional snap-fit ​​structures are prone to detachment, resulting in a high defect rate and making it difficult to guarantee product quality. Utility Model Content

[0003] The purpose of this invention is to provide a negative pressure ball sealing structure to solve the problems of complex assembly process, easy detachment of sealing structure and poor sealing performance of existing negative pressure balls.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure ball sealing structure, comprising a ball and a sealing structure, wherein the sealing structure comprises an inner pressure cover and an outer pressure cover, the upper part of the ball is provided with a discharge port, the lower part of the discharge port is provided with a limiting protrusion ring, the inner pressure cover comprises a protruding head, an embedded section and an abutting section, the lower surface of the limiting protrusion ring and the upper surface of the abutting section are fitted together, the outer pressure cover passes through the protruding head and is fitted outside the embedded section, the combined height of the limiting protrusion ring and the outer pressure cover is greater than the length of the embedded section, so that the top of the outer pressure cover abuts against the protruding head.

[0005] As a further improvement of the above technical solution:

[0006] The outer pressure cap includes an embedded part and a ring cover part. The ring cover part covers the top of the balloon. The top of the embedded part abuts against the protruding head. The inner diameter of the embedded part increases from top to bottom.

[0007] The annular cover has several supporting ribs evenly distributed inside, and the supporting ribs are in contact with the balloon.

[0008] A gasket is provided on the upper surface of the balloon, and the gasket is disposed between the balloon and the outer pressure cap.

[0009] The limiting protrusion ring is provided with a sealing ring groove, and the embedded section is provided with a sealing protrusion ring, and the sealing ring groove cooperates with the sealing protrusion ring.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] Excellent sealing performance: The combination of the sealing ring groove and the sealing convex ring, as well as the design of the supporting rib 321, effectively improves the sealing performance and ensures that no leakage will occur during use.

[0012] Easy assembly: The negative pressure ball sealing structure of this utility model can achieve sealing assembly with just one press. The assembly process is simple, reducing the difficulty of operation and improving production efficiency.

[0013] Safe and reliable: The embedded part cannot pass through the protruding head upwards, which avoids the phenomenon of falling off during use and improves the safety of the product.

[0014] Anti-interference design: The gasket protrudes outward, making the negative pressure ball less susceptible to external interference during use and avoiding damage caused by collisions.

[0015] Compact structure: The sealing structure of this embodiment is reasonably designed, occupies little space, and is easy to use in various environments.

[0016] In summary, this technology solves the problems of complex assembly processes, easy detachment of sealing structures, and poor sealing performance of existing negative pressure ball systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of the negative pressure ball sealing structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the negative pressure ball sealing structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the outer pressure cap structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the inner pressure cover structure of this utility model.

[0022] Reference numerals: 1. Balloon; 11. Limiting protrusion; 111. Sealing ring groove; 2. Inner pressure cap; 21. Protruding head; 22. Embedded section; 221. Sealing protrusion; 23. Abutting section; 3. Outer pressure cap; 31. Embedded part; 32. Ring cover part; 321. Support rib; 4. Gasket. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 5 As shown, the negative pressure ball sealing structure of this embodiment includes a ball 1 and a sealing structure. The sealing structure includes an inner pressure cover 2 and an outer pressure cover 3. The upper part of the ball 1 is provided with a discharge port, and the lower part of the discharge port is provided with a limiting protrusion ring 11. The inner pressure cover 2 includes a protruding head 21, an embedded section 22 and an abutting section 23. The lower surface of the limiting protrusion ring 11 and the upper surface of the abutting section 23 are engaged. After the outer pressure cover 3 passes through the protruding head 21, it is fitted outside the embedded section 22. The combined height of the limiting protrusion ring 11 and the outer pressure cover 3 is greater than the length of the embedded section 22, so that the top of the outer pressure cover 3 abuts against the protruding head 21.

[0028] The outer pressure cap 3 includes an insert portion 31 and an annular cover portion 32. The annular cover portion 32 covers the top of the balloon 1. The top of the insert portion 31 abuts against the protruding head 21. The inner diameter of the insert portion 31 increases sequentially from top to bottom. Several supporting ribs 321 are evenly distributed inside the annular cover portion 32, and the supporting ribs 321 contact the balloon 1. The supporting ribs 321 can further improve the compression performance and facilitate sealing.

[0029] A gasket 4 is provided on the upper surface of the balloon 1, and the gasket 4 is located between the balloon 1 and the outer pressure cap 3. The gasket 4 protrudes outward to prevent the negative pressure balloon from being interfered with during use and to avoid the negative pressure balloon being bumped around.

[0030] The limiting protrusion 11 is provided with a sealing ring groove 111, and the embedded section 22 is provided with a sealing protrusion 221. The sealing ring groove 111 and the sealing protrusion 221 cooperate.

[0031] During assembly, one end of the inner pressure cap 2 is inserted into the balloon 1, specifically the abutment section 23, which then contacts the limiting protrusion 11. During this process, the sealing protrusion 221 and the sealing ring groove 111 cooperate. Next, the outer pressure cap 3 is inserted downwards from the protrusion 21. Since the protrusion 21 has an arc structure and both the inner and outer pressure caps are made of PP material, they have a certain degree of elasticity, allowing the outer pressure cap 3 to pass smoothly through the protrusion 21. Pressing the outer pressure cap 3 compresses the upper part of the balloon 1 until the top of the embedded part 31 of the outer pressure cap 3 abuts against the protrusion 21, thus completing the installation. The assembly process requires only one press to achieve a seal, making assembly simple. The embedded part 31 cannot pass upwards through the protrusion 21, preventing it from falling off. Users can operate directly without experience, improving production efficiency. Adding a gasket 4 to the balloon 1 further improves the sealing performance. The gasket 4 protrudes externally to avoid interference during use.

[0032] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model 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 utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A negative pressure ball sealing structure, comprising a ball (1) and a sealing structure, characterized in that: The sealing structure includes an inner pressure cap (2) and an outer pressure cap (3). The upper part of the balloon (1) is provided with a discharge port, and the lower part of the discharge port is provided with a limiting protrusion ring (11). The inner pressure cap (2) includes a protruding head (21), an embedded section (22) and an abutting section (23). The lower surface of the limiting protrusion ring (11) and the upper surface of the abutting section (23) are engaged. After the outer pressure cap (3) passes through the protruding head (21), it is fitted outside the embedded section (22). The combined height of the limiting protrusion ring (11) and the outer pressure cap (3) is greater than the length of the embedded section (22), so that the top of the outer pressure cap (3) abuts against the protruding head (21).

2. The negative pressure ball sealing structure according to claim 1, characterized in that: The outer pressure cap (3) includes an embedded part (31) and an annular cover part (32). The annular cover part (32) covers the top of the balloon (1). The top of the embedded part (31) abuts against the protruding head (21). The inner diameter of the embedded part (31) increases from top to bottom.

3. The negative pressure ball sealing structure according to claim 2, characterized in that: The annular cover (32) is provided with a number of supporting ribs (321) that are in contact with the balloon (1).

4. The negative pressure ball sealing structure according to claim 2 or 3, characterized in that: A gasket (4) is provided on the upper surface of the balloon (1), and the gasket (4) is disposed between the balloon (1) and the outer pressure cap (3).

5. The negative pressure ball sealing structure according to claim 1, characterized in that: The limiting protrusion (11) is provided with a sealing ring groove (111), and the embedded section (22) is provided with a sealing protrusion (221). The sealing ring groove (111) cooperates with the sealing protrusion (221).

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