A twist-off container closure

Abstract

The utility model relates to the technical field of sealing device, especially a twist -free container sealing device, including fixed ring and detachable connection on the fixed ring sealing body, the sealing body on fixed joint, the bottom of sealing body is provided with the bottom through -hole with joint, in using the utility model, through the joint and bottom through -hole of setting up on the sealing body realizes the oil tank automatic supply, makes and can continuously fill, reduces the labor intensity, improves the filling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a screwless container sealing device. Background Technology

[0002] In various small-scale devices that rely on fuel power, the fuel tank, as the core component for fuel storage, directly affects the safety, stability, and reliability of fuel storage and equipment operation. Currently, the mainstream fuel tank sealing structure on the market generally adopts a "sealing plug + sealing surface" combination. That is, a cylindrical sealing plug with a sealing ring or sealing texture is set at the filling port of the fuel tank. By screwing the sealing plug into the filling port threaded in or press-fitting it into the filling port, a tight fit is achieved between the sealing plug and the inner wall of the filling port, thereby blocking the flow of fuel inside the fuel tank to the outside air, achieving the sealing purpose of preventing fuel leakage and evaporation. However, the existing sealing structure has a key functional limitation in actual use—it cannot achieve automatic fuel filling, and manual filling is cumbersome, inefficient, and also poses safety and environmental risks. The lack of automatic refueling functionality is a significant drawback. Because the sealing plug must completely seal the refueling port to achieve a seal, in the current design, adding fuel to the tank (usually from a large fuel drum or centralized fuel supply system) requires manual removal of the sealing plug from the refueling port. After refueling, the plug must be reinstalled and resealed. This process relies entirely on manual intervention, making it incompatible with automated refueling equipment (such as fuel supply devices with automatic docking interfaces). It fails to meet the needs of unattended equipment and other scenarios requiring automatic fuel tank replenishment, and manual refueling is cumbersome and labor-intensive. Utility Model Content

[0003] The purpose of this invention is to provide a screwless container sealing device to address the defects and shortcomings of existing technologies.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The present invention discloses a screwless container sealing device, comprising a fixing ring and a sealing body detachably connected to the fixing ring; a connector is fixed on the sealing body; and a bottom through hole communicating with the connector is provided at the bottom of the sealing body.

[0005] Furthermore, the sealing body includes an upper pressure cover and a bottom pressure plate slidably connected to the upper pressure cover; the joint is fixed on the bottom pressure plate; and the bottom through hole is provided on the bottom pressure plate. A sealing ring is provided between the upper pressure cover and the bottom pressure plate; an inner convex ring is provided on the inner side wall of the fixing ring; after the upper pressure cover is locked and fixed to the bottom pressure plate, the upper pressure cover presses against the top surface of the inner convex ring and the bottom pressure plate presses the sealing ring against the bottom surface of the inner convex ring; when the sealing ring is not squeezed, the outer diameter of the sealing ring is smaller than the inner diameter of the inner hole of the inner convex ring.

[0006] Furthermore, an upper chamfer surface is provided between the outer surface of the upper cover and the bottom surface of the upper cover; a lower chamfer surface is provided between the outer wall of the bottom pressure plate and the top surface of the bottom pressure plate; the upper chamfer surface and the lower chamfer surface are respectively pressed against the inner wall of the sealing ring.

[0007] Furthermore, the sealing ring has a circular cross-section.

[0008] Furthermore, a fixing plate is fixed on the bottom pressure plate; a through hole is provided on the upper pressure cover through the fixing plate; a handle is hinged on the fixing plate; a cam surface is provided on the handle and fits against the top surface of the upper pressure cover; the cam surface is composed of an arc surface and a supporting plane connected to one end of the arc surface.

[0009] Furthermore, an angled surface is provided between the inner sidewall of the inner convex ring and the bottom surface of the inner convex ring.

[0010] Furthermore, the connector is integrally formed with the bottom pressure plate.

[0011] The beneficial effects of this utility model after adopting the above structure are as follows: the oil tank is in a vacuum environment, and the oil inside the oil tank is pumped into the equipment by the oil pump. When oil is consumed, the air pressure in the oil tank decreases, which causes negative pressure to be generated in the bottom through hole and the joint. The oil in the oil tank is pumped into the oil tank through the pipeline connected to the joint. In this structure, the oil tank is automatically replenished by the joint and the bottom through hole set on the sealing body, so that the filling can be continuous, reducing labor intensity and improving filling efficiency. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a cross-sectional view of the retaining ring; Figure 3 This is a first-person perspective stereoscopic view of the sealed body; Figure 4 This is a second-view stereoscopic view of the sealed body; Figure 5 This is the front view of the seal; Figure 6 yes Figure 5 Enlarged view of part A in the image; Explanation of reference numerals in the attached figures: 1. Retaining ring; 101. Inner convex ring; 10101. Beveled surface; 2. Upper pressure cap; 201. Upper chamfered surface; 3. Handle; 301. Arc surface; 302. Support plane; 4. Connector; 5. Sealing ring; 6. Bottom pressure plate; 601. Bottom through hole; 602. Lower chamfered surface; 7. Fixing plate. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figures 1 to 6 As shown, the present invention provides a screwless container sealing device, which includes a fixing ring 1 and a sealing body detachably connected to the fixing ring 1; a connector 4 is fixed on the sealing body; and a bottom through hole 601 communicating with the connector 4 is provided at the bottom of the sealing body. The fixing ring 1 is directly fixed to the oil tank; after the sealing body is fixed to the fixing ring 1, the connector 4 is connected to the external replenishment oil tank through the oil pipe; the connector 4 is connected to the oil tank through the bottom through hole 601, the oil tank directly supplies oil to the equipment, and the oil pipe is used to replenish the oil tank. The connector 4 is not fundamentally different from existing technology, so it will not be described in detail. The oil tank is in a vacuum environment. The oil inside the tank is pumped into the equipment by an oil pump. When oil is consumed, the air pressure in the tank decreases, which creates negative pressure in the bottom through hole 601 and connector 4. The oil in the tank is pumped into the tank through the pipeline connected to connector 4. In this structure, the automatic replenishment of the oil tank is achieved by the connector 4 and the bottom through hole 601 set on the sealing body, which makes the filling continuous, reduces labor intensity, and improves filling efficiency.

[0015] In a preferred embodiment of this utility model, the sealing body includes an upper pressure cover 2 and a bottom pressure plate 6 slidably connected to the upper pressure cover 2; the connector 4 is fixed on the bottom pressure plate 6; and the bottom through hole 601 is provided on the bottom pressure plate 6. A sealing ring 5 is provided between the upper pressure cover 2 and the bottom pressure plate 6; an inner convex ring 101 is provided on the inner side wall of the fixing ring 1; after the upper pressure cover 2 is locked and fixed to the bottom pressure plate 6, the upper pressure cover 2 presses against the top surface of the inner convex ring 101 and the bottom pressure plate 6 presses the sealing ring 5 against the bottom surface of the inner convex ring 101; when the sealing ring 5 is not squeezed, the outer diameter of the sealing ring 5 is smaller than the inner diameter of the inner hole of the inner convex ring 101; After the upper pressure cover 2 is locked and fixed on the bottom pressure plate 6, the upper pressure cover 2 and the bottom pressure plate 6 press and deform the sealing ring 5. In this state, the outer diameter of the sealing ring 5 is larger than the inner diameter of the inner convex ring 101. This not only achieves the seal between the bottom pressure plate 6 and the fixing ring 1, but also makes the sealing body structure unable to be removed from the fixing ring 1 by using the sealing ring 5 to hold the inner convex ring 101. When the upper pressure cover 2 is released from the bottom pressure plate 6, the sealing ring 5 returns to its shape, and the sealing ring 5 and the bottom pressure plate 6 can be pulled out from the inner convex ring 101 to complete the disassembly of the sealing body.

[0016] In a preferred embodiment of this utility model, an upper chamfer surface 201 is provided between the outer surface of the upper pressure cover 2 and the bottom surface of the upper pressure cover 2; a lower chamfer surface 602 is provided between the outer wall of the bottom pressure plate 6 and the top surface of the bottom pressure plate 6; the upper chamfer surface 201 and the lower chamfer surface 602 are respectively pressed against the inner wall of the sealing ring 5. When the upper chamfered surface 201 and the lower chamfered surface 602 are brought close together, the inclined surfaces of the upper chamfered surface 201 and the lower chamfered surface 602 deform the sealing ring 5, making it easier to increase the diameter of the sealing ring 5.

[0017] As a preferred embodiment of this utility model, the sealing ring 5 has a circular cross-section; the circular cross-section of the sealing ring 5 makes it easier to fit with the upper chamfered surface 201 and the lower chamfered surface 602.

[0018] In a preferred embodiment of this utility model, a fixing plate 7 is fixed on the bottom pressure plate 6; a through hole is provided on the upper pressure cover 2 through the fixing plate 7; a handle 3 is hinged on the fixing plate 7; a cam surface is provided on the handle 3 and fits against the top surface of the upper pressure cover 2; the cam surface is composed of an arc surface 301 and a support plane 302 connected to one end of the arc surface 301. The pivot that enables the handle 3 to rotate and connect with the fixed plate 7 is the first pivot. The distance from the supporting plane 302 to the first pivot is less than the distance from the arc surface 301 to the first pivot. Therefore, when the supporting plane 302 is in contact with the top surface of the upper cover 2, the distance between the upper cover 2 and the bottom pressure plate 6 is the largest, which is equivalent to the sealing ring 5 returning to its shape after the upper cover 2 and the bottom pressure plate 6 are released. When the arc surface 301 is pressed against the top surface of the upper cover 2, the distance between the upper cover 2 and the bottom pressure plate 6 is the smallest, which is equivalent to the upper cover 2 and the bottom pressure plate 6 clamping the sealing ring 5, thereby increasing the diameter of the sealing ring 5.

[0019] As a preferred embodiment of this utility model, an oblique surface 10101 is provided between the inner sidewall of the inner convex ring 101 and the bottom surface of the inner convex ring 101; the oblique surface 10101 increases the contact surface between the sealing ring 5 and the inner convex ring 101, which can not only improve the sealing effect, but also reduce the pressure on the surface of the inner convex ring 101 on the sealing ring 5, thus reducing the risk of the sealing ring 5 cracking.

[0020] In a preferred embodiment of this utility model, the connector 4 and the bottom pressure plate 6 are integrally formed.

[0021] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A screwless container closure device characterized by: It includes a retaining ring (1) and a sealing body detachably connected to the retaining ring (1); a connector (4) is fixed on the sealing body; and a bottom through hole (601) connected to the connector (4) is provided at the bottom of the sealing body.

2. A screwless container closure according to claim 1, wherein: The sealing body includes an upper pressure cover (2) and a bottom pressure plate (6) slidably connected to the upper pressure cover (2); the joint (4) is fixed on the bottom pressure plate (6); the bottom through hole (601) is provided on the bottom pressure plate (6); A sealing ring (5) is provided between the upper pressure cover (2) and the bottom pressure plate (6); an inner convex ring (101) is provided on the inner side wall of the fixing ring (1); after the upper pressure cover (2) is locked and fixed to the bottom pressure plate (6), the upper pressure cover (2) presses against the top surface of the inner convex ring (101) and the bottom pressure plate (6) presses the sealing ring (5) against the bottom surface of the inner convex ring (101); when the sealing ring (5) is not squeezed, the outer diameter of the sealing ring (5) is smaller than the inner diameter of the inner hole of the inner convex ring (101).

3. A screw- free container closure according to claim 2, wherein: An upper chamfered surface (201) is provided between the outer surface of the upper cover (2) and the bottom surface of the upper cover (2); a lower chamfered surface (602) is provided between the outer wall of the bottom pressure plate (6) and the top surface of the bottom pressure plate (6); the upper chamfered surface (201) and the lower chamfered surface (602) are respectively pressed against the inner wall of the sealing ring (5).

4. A screw- free container closure according to claim 3, wherein: The sealing ring (5) has a circular cross-section.

5. A screwless container sealing device according to claim 2, characterized in that: A fixing plate (7) is fixed on the bottom pressure plate (6); a through hole is provided on the upper pressure cover (2) through the fixing plate (7); a handle (3) is hinged on the fixing plate (7); a cam surface is provided on the handle (3) and fits against the top surface of the upper pressure cover (2); the cam surface is composed of an arc surface (301) and a support plane (302) connected to one end of the arc surface (301).

6. A screwless container closure according to claim 2 wherein: An oblique surface (10101) is provided between the inner sidewall of the inner convex ring (101) and the bottom surface of the inner convex ring (101).

7. A screwless container closure according to claim 2 wherein: The connector (4) and the bottom pressure plate (6) are integrally formed.

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