Waterproof and breathable sealing cover

Abstract

The utility model discloses a waterproof breathable sealing cover which comprises a cover top, a cover wall, a sealing gasket and a waterproof breathable film, the cover wall is provided with internal threads, the internal threads are in threaded connection with a container to form a breathable thread structure, an installation cavity is formed between the cover top and the cover wall and used for containing the sealing gasket, the sealing gasket is provided with breathable holes, and the waterproof breathable film is arranged in the installation cavity. The waterproof breathable film is arranged on the breathable hole, an annular protruding block is arranged on the cover top, the inner circle of the annular protruding block is matched with the sealing gasket to form a gas buffering area, the outer circle of the annular protruding block is matched with the sealing gasket to form a gas breathable area, the gas buffering area is communicated with the breathable hole, and the gas breathable area is communicated with the breathable thread structure. A plurality of ventilation grooves are formed in the circumferential direction of the annular protruding block, the ventilation grooves communicate with the gas buffering area and the gas ventilation area correspondingly, by optimizing the structure, on the premise that it is guaranteed that liquid in the container does not leak out, gas in the container can be kept communicating with outside gas, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid container lids, and particularly relates to a waterproof and breathable sealing lid. Background Art

[0002] Existing sealing lids used on containers for storing liquids such as lubricating oil, paint, cutting fluid, etc. are all air-permeable sealing lids. Generally, air holes are provided on the sealing lid, and a waterproof and breathable film is provided on the air holes. Although this kind of sealing lid can play a role in ventilation, due to the setting of the air holes, there will still be a situation of liquid leakage.

[0003] See Figure 1 , which shows a structural example of a traditional sealing lid. As can be seen from the figure, the traditional sealing lid is mainly composed of a lid top, a lid wall, a sealing gasket 3, and an anti-theft ring 4.

[0004] Among them, internal threads are provided on the inner wall of the lid wall 2, and the sealing lid is threadedly connected to the container. The lid top 1 extends downward with a closed first boss 6 and a second boss 7. The first boss 6 and the second boss 7 are circularly arranged with the same center of the circle. The radius of the first boss 6 is greater than the radius of the second boss 7. An installation cavity for installing the sealing gasket is formed between the first boss 6 and the lid wall 2. The second boss 7 has an inner cavity. An air hole is provided on the lid top 1, and the air hole communicates with the inner cavity of the boss 7. A waterproof and breathable film is provided at the end of the second boss 7. Gas can pass through the waterproof and breathable film, pass through the inner cavity of the second boss 7, and finally flow into the outside from the air hole. The anti-theft ring 4 is connected to one end of the lid wall 2 through a plurality of breakable connecting members 8, and a plurality of protrusions are provided on the anti-theft ring.

[0005] When the above-mentioned sealing lid is actually applied, there is a situation of liquid leakage due to the setting of the air hole, and the lid top 1 extends downward with the first boss 6 and the second boss 7, and the structure is complex, resulting in a large amount of waste material generated during the production process of the sealing gasket 3, increasing the manufacturing cost.

[0006] Therefore, it can be seen that providing a sealing lid that does not leak liquid and has a simple structure is an urgent problem to be solved in this field. Summary of the Utility Model

[0007] Aiming at the technical problems of liquid leakage and complex structure existing in the existing sealing lid, the purpose of the utility model is to provide a waterproof and breathable sealing lid. By optimizing the structure, it can ensure that the liquid in the container does not leak out, while keeping the gas in the container able to leak out well, and the structure is simple.

[0008] To achieve the above object, the waterproof and breathable sealing cover provided by the utility model includes a cover top, a cover wall, a sealing gasket, and a waterproof and breathable membrane. The cover wall is provided with internal threads, and the internal threads are screwed with the container to form a breathable thread structure. An installation cavity is formed between the cover top and the cover wall for placing the sealing gasket. The sealing gasket is provided with ventilation holes, and the waterproof and breathable membrane is arranged on the ventilation holes. The cover top is provided with an annular protrusion. The inner circle of the annular protrusion cooperates with the sealing gasket to form a gas buffer zone, and the outer circle cooperates with the sealing gasket to form a gas ventilation zone. The gas buffer zone is communicated with the ventilation holes, and the gas ventilation zone is communicated with the breathable thread structure. A plurality of ventilation grooves are circumferentially arranged on the annular protrusion, and the ventilation grooves are respectively communicated with the gas buffer zone and the gas ventilation zone.

[0009] Further, a plurality of convex ribs are circumferentially arranged on the inner side wall of the cover wall. An installation space corresponding to the sealing gasket is formed between the plurality of convex ribs and the cover top, and the sealing gasket can be clamped in the installation space. The plurality of convex ribs can limit the vertical movement of the sealing gasket.

[0010] Further, the plurality of ventilation grooves are equidistantly distributed along the circumference of the annular protrusion.

[0011] Further, a convex rib is arranged at the center position of the cover top. The convex rib is circular and corresponds to the ventilation hole, and the convex rib can play a role in guiding the flow.

[0012] Further, the sealing cover further includes an anti-theft ring. The anti-theft ring is connected to one end of the cover wall through a plurality of breakable connection parts. One end of the breakable connection part is connected to the cover wall, and the other end is connected to the bottom end of the anti-theft ring. A plurality of anti-rotation protrusions are arranged on the inner wall of the anti-theft ring.

[0013] Further, a plurality of reinforcing ribs are arranged on the outer wall of the cover wall, and the plurality of reinforcing ribs are equidistantly distributed along the circumference of the cover wall in sequence.

[0014] Further, the ventilation grooves are arranged in a through length manner from the cover wall to the convex rib.

[0015] The waterproof and breathable sealing cover provided by the utility model, through optimizing the structure, can ensure that the liquid in the container does not leak out, keep the gas in the container connected with the outside gas, and has a simple structure, greatly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further illustrates the utility model in conjunction with the drawings and specific embodiments.

[0017] Figure 1 is a structural schematic diagram of a traditional sealing cover;

[0018] Figure 2 is a top view structural schematic diagram of the waterproof and breathable sealing cover provided by the utility model;

[0019] Figure 3 Schematic side view structure of the waterproof and breathable sealing cover provided by the present utility model;

[0020] Figure 4 Schematic structure of the gasket of the waterproof and breathable sealing cover provided by the present utility model;

[0021] Figure 5 Schematic structure of the waterproof and breathable film of the waterproof and breathable sealing cover provided by the present utility model;

[0022] Figure 6 Schematic cross-sectional view structure of the waterproof and breathable sealing cover provided by the present utility model.

[0023] Illustration description:

[0024] Gasket 3, anti-theft ring 4, first boss 6, second boss 7, breakable connecting member 8;

[0025] Cover top 100, cover wall 200, gasket 300, anti-theft ring 400, waterproof and breathable film 500;

[0026] Reinforcing rib 110, annular protrusion 120, ventilation groove 130, convex rib 140, gas buffer zone 150, gas ventilation zone 160, convex rib 170, installation cavity 210, ventilation hole 310, breakable connection part 410, anti-rotation protrusion 420. Specific embodiments

[0027] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific illustrations.

[0028] See Figures 2 - 6 , which shows the specific composition example of the waterproof and breathable sealing cover given in this example.

[0029] Referring to the relevant illustrations, the overall shape of this waterproof and breathable sealing cover is in the shape of a cover cylinder, and structurally mainly includes a cover top 100, a cover wall 200, a gasket 300, and a waterproof and breathable film 500.

[0030] Among them, the inner side wall of the cover wall 200 is provided with internal threads for cooperating with the threaded surface of the container. The sealing cover is threadedly connected to the container through the internal threads. In this solution, the internal threads and the threaded surface of the container can be screwed together to form a breathable thread structure, and gas can be led out to the outside through the breathable thread structure.

[0031] Such as Figure 6 , an installation cavity 210 is formed between the cover top 100 and the cover wall 200 for placing the gasket 300.

[0032] The gasket 300 is placed inside the installation cavity 210 and functions as a seal. When the sealing cover is threadedly connected to the container, the gasket 300 deforms under external force extrusion. The gasket 300 abuts against the container mouth and the lid top 100 respectively, forming a sealed space. The liquid in the container is sealed inside the container and will not overflow.

[0033] In addition, the specific composition of the gasket 300 will not be elaborated here and can be determined according to actual needs, as long as the structure is stable and reliable and can achieve the above functions.

[0034] Furthermore, as Figure 4 , in order to increase the air permeability of the sealing cover, a ventilation hole 310 is provided on the gasket 300. The ventilation hole 310 is preferably located in the middle of the gasket 300.

[0035] On this basis, as Figure 5 , a waterproof breathable membrane 500 is provided on the ventilation hole 310. The waterproof breathable membrane 500 has the functions of ventilation and waterproofing. Since the waterproof breathable membrane 500, the gas in the container is led out from the waterproof breathable membrane 500 while the liquid in the container will not overflow.

[0036] The specific composition of the waterproof breathable membrane 500 in this solution is not limited and can be made of materials such as TPU and PE, as long as the structure is stable and reliable and can meet the functions of waterproofing and ventilation.

[0037] The gasket 300 with such a structure cooperates with the lid top 100. By rotating the sealing cover, after the internal thread is fitted with the thread surface of the container and tightened, the liquid in the container is sealed inside the container through the gasket 300. The gas in the container passes through the waterproof breathable membrane 500 on the ventilation hole 310 and is finally led out from the ventilation thread structure between the internal thread and the thread surface of the container.

[0038] To further enhance the reliability of the sealing cover, as Figure 2 , Figure 6 , an annular convex block 120 is provided on the contact surface between the lid top 100 and the gasket 300 for cooperation with the gasket 300.

[0039] During the actual application process, due to external force, the gasket 300 is extruded. A gas buffer zone 150 is formed between the gasket 300 and the inner circle of the annular convex block 120, and a gas ventilation zone 160 is formed between the gasket 300 and the outer circle of the annular convex block 120. The gas buffer zone 150 is communicated with the ventilation hole 310 of the gasket 300, and the gas ventilation zone 160 is communicated with the ventilation thread structure.

[0040] The above annular convex block 120 separates the gas buffer zone 150 and the gas ventilation zone 160.

[0041] Furthermore, a plurality of ventilation grooves 130 are circumferentially arranged on the annular bump 120, and the plurality of ventilation grooves 130 are respectively communicated with the gas buffer area 150 and the gas ventilation area 160.

[0042] On this basis, the gas is exported from the container through the waterproof breathable membrane 500 and first enters the gas buffer area 150. The gas is buffered in the gas buffer area 150 and is exported from the breathable buffer area 150 to the gas ventilation area 160 through the ventilation grooves 130. Finally, the gas is exported to the outside through the breathable thread structure.

[0043] In this solution, the plurality of ventilation grooves 130 are preferably equidistantly distributed along the circumference of the annular bump 120, and the plurality of ventilation grooves 130 separate the annular bump 120.

[0044] The shape of the ventilation groove 130 is not limited here and can be determined according to actual needs. As an example, a Chinese character-shaped ventilation groove is preferably adopted in this embodiment.

[0045] In order to further improve the ventilation efficiency, the ventilation grooves 130 in this solution are arranged along the entire length from the cover wall 200 to the convex rib 140. The groove volume of the ventilation grooves 130 with such a structure is maximized, which can greatly improve the ventilation efficiency.

[0046] In this embodiment, a plurality of reinforcing ribs 110 are provided on the outer wall of the cover wall 200. The plurality of reinforcing ribs 110 are equidistantly distributed along the circumference of the cover wall 200 on the outer wall of the cover wall 200. The reinforcing ribs 110 can improve the structural strength of the sealing cover and also provide friction when rotating the sealing cover, making it easier to open the sealing cover.

[0047] In order to prevent the sealing gasket 300 from falling off from the installation cavity 210, a plurality of convex ribs 170 are circumferentially arranged on the inner side wall of the cover wall 200 in this solution. An installation space corresponding to the sealing gasket 300 is formed between the plurality of convex ribs 170 and the cover top 100, and the sealing gasket 300 can be clamped in the installation space. The plurality of convex ribs 170 can limit the vertical movement of the sealing gasket 300 and can avoid the risk of the sealing gasket 300 falling off, greatly improving the stability and reliability of the sealing gasket 300.

[0048] It should be noted that the plurality of convex ribs 170 do not protrude beyond the internal thread on the inner side wall of the cover wall 200. That is to say, the diameter of the circular ring formed by the plurality of convex ribs 170 in the circumferential direction is less than or equal to the circumferential diameter of the internal thread. In this way, when the sealing cover is screwed to the container, the plurality of convex ribs 170 do not block the container port, and the container port can be in contact with the sealing gasket 300.

[0049] The number of the convex ribs 170 is not limited in this solution. As an example, this embodiment preferably adopts four convex ribs 170, and the four convex ribs 170 are equidistantly distributed in sequence along the circumference of the cover wall 200.

[0050] Further, in order to evenly direct the gas when relieving pressure into several ventilation grooves 130, a convex rib 140 is provided in the middle of the cover top 100. The convex rib 140 corresponds to the ventilation holes 310. The convex rib 140 is a circular protrusion that can play a role in guiding the flow.

[0051] As Figure 6 , in practical applications, by screwing the sealing cover to the container, the sealing gasket 300 is squeezed. There is a gap between the ventilation holes 310 of the sealing gasket 300 and the convex rib 140. After the gas in the container passes through the waterproof and breathable film 500 on the ventilation holes 310, through the guiding of the convex rib 140, the gas is evenly dispersed and flows into the gas buffer area 150, and is evenly introduced into the gas ventilation area 160 from several ventilation grooves 130. Such a structure can ensure that the gas is evenly dispersed into several ventilation grooves 130.

[0052] The sealing cover provided by the present utility model further includes an anti-theft ring 400. The anti-theft ring 400 is connected to one end of the cover wall 200 through several breakable connecting parts 410. The anti-theft ring 400 can prevent counterfeit and shoddy products and ensure that the quality of the contents in the container is not maliciously damaged. The anti-theft ring 400 is integrally cylindrical. Several breakable connecting parts 410 are arranged as strip-shaped objects that are easily broken. One end of the breakable connecting part 410 is connected to the cover wall 200, and the other end is connected to the bottom end of the anti-theft ring 400; and several anti-rotation protrusions 420 are provided on the inner wall of the anti-theft ring 400. During the transportation process of the container, it is easy to be jolted and shaken, which may cause the connection between the container and the sealing cover to become loose and result in liquid leakage. The anti-rotation protrusions 420 have the function of preventing rotation, preventing the sealing cover from rotating in the direction of unscrewing, thereby ensuring the connection strength and tightness between the container and the sealing cover.

[0053] The sealing cover provided in this example is preferably used on a 25L barrel. Currently, D17 ventilation plugs are commonly used in the sealing covers of 25L and 200L barrels on the market. However, in terms of volume, 25L is only 1 / 8 of that of a 200L barrel. Therefore, in the case of filling the same material, the ventilation volume required for a 25L barrel is only 1 / 8 of that of a 200L barrel. Using a D17 ventilation plug causes waste and increases the usage cost.

[0054] The sealing gasket 300 is adopted in the sealing cover provided by this solution. By opening holes in the sealing gasket 300 and setting a waterproof and breathable film 500, the sealing and ventilation are realized in this way. Thus, the ventilation volume of the sealing gasket 300 in this solution can greatly meet the ventilation volume of a 25L barrel;

[0055] Moreover, the gasket 300 used in this solution has another great advantage, that is, it can be used in two ways, both breathable and sealed. Compared with the ventilation plugs and gaskets set in the sealing covers on the market, for example, this sealing cover can save the gasket cost by 0.15 yuan. There is also the assembly cost. Originally, it was necessary to install one ventilation plug, one gasket, and two man-hours. Now, only one gasket 300 is needed, saving half of the labor cost. Calculated based on the current labor cost, for example, at least 0.20 yuan can be saved per piece.

[0056] The gasket 300 in this solution is made of different materials corresponding to different liquids contained in the barrel, so as to achieve the purpose of improving the use effect. If the barrel contains triacid products, the gasket 300 in this solution adopts a polytetrafluoroethylene composite gasket, which can play a role in protecting and sealing the sealing cover;

[0057] If the barrel contains high-purity reagents, the gasket 300 in this solution needs to be washed with distilled water and then reserved, so as to ensure the quality of the product.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and breathable sealing cover, comprising a cover top, a cover wall, a sealing pad, and a waterproof and breathable membrane, wherein the cover wall is provided with an internal thread, characterized in that: The internal thread is screwed with the container to form a breathable thread structure, and an installation cavity is formed between the cover top and the cover wall for accommodating a sealing gasket. The sealing gasket is provided with a breathable hole, and the waterproof breathable membrane is arranged on the breathable hole. An annular protrusion is provided on the cover top, and the inner circle of the annular protrusion cooperates with the sealing gasket to form a gas buffer zone, and the outer circle cooperates with the sealing gasket to form a gas permeable zone. The gas buffer zone is connected with the breathable hole, and the gas permeable zone is connected with the breathable thread structure. The annular protrusion is circumferentially provided with a plurality of breathable grooves, and the breathable grooves are respectively connected with the gas buffer zone and the gas permeable zone.

2. The waterproof and breathable sealing cover according to claim 1, characterized in that: The inner side wall of the cover wall is provided with a plurality of convex ribs in the circumferential direction, and a placement space corresponding to the sealing gasket is formed between the plurality of convex ribs and the cover top, and the sealing gasket can be clamped in the placement space, and the plurality of convex ribs can limit the vertical movement of the sealing gasket.

3. The waterproof and breathable sealing cover according to claim 1, characterized in that: The plurality of air-permeable grooves are distributed in sequence and at equal intervals along the circumference of the annular protrusion.

4. The waterproof and breathable sealing cover according to claim 1, characterized in that: A convex ridge is provided at the center of the cover top. The convex ridge is circular and corresponds to the air vent. The convex ridge can play a role in guiding flow.

5. The waterproof and breathable sealing cover according to claim 1, characterized in that: The sealing cover also includes an anti-theft ring, which is connected to one end of the cover wall through a plurality of breakable connecting parts. One end of the breakable connecting part is connected to the cover wall, and the other end is connected to the bottom end of the anti-theft ring. The inner wall of the anti-theft ring is provided with a plurality of anti-rotation protrusions.

6. The waterproof and breathable sealing cover according to claim 1, characterized in that: The outer wall of the cover wall is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are distributed in sequence and at equal intervals along the circumference of the cover wall.

7. The waterproof and breathable sealing cover according to claim 1, characterized in that: The ventilation groove is arranged along the entire length of the cover wall to the convex ridge.

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