Ventilation plug

Abstract

The utility model relates to the technical field of vent plugs, in particular to a vent plug which comprises a plug body and a plug cover connected with the lower end of the plug body, the plug body comprises an exhaust port connecting pipe used for being connected with an exhaust pipe, a membrane frame is fixedly arranged at the lower end of the exhaust port connecting pipe, and a waterproof breathable membrane is attached to the lower end face of the membrane frame. A fixing ring is further arranged at the lower end of the exhaust port connecting pipe, the edge of the waterproof breathable film is attached to the lower end face of the fixing ring, a plurality of clamping strips are arranged at the lower end of the fixing ring in the circumferential direction at intervals, and the lower ends of the clamping strips are inserted into the plug cover. At the moment, the waterproof breathable film below the film frame can prevent liquid from overflowing through the exhaust port, the plug cover can effectively relieve impact of the liquid on the waterproof breathable film when the container shakes, and normal use of the waterproof breathable film is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of breathable plug technology, and in particular to a breathable plug. Background Technology

[0002] When storing volatile or vaporizable liquids in a barrel-shaped container, an vent hole needs to be provided on the container lid to facilitate the discharge of gas generated by liquid vaporization and ensure normal internal pressure.

[0003] In practical use, especially during container transportation, liquid can easily overflow through the vent. Currently, the main method to prevent liquid overflow is to install a waterproof and breathable membrane on the vent pipe below the vent. Figure 6 As shown, a waterproof and breathable membrane is attached to the end face of the exhaust pipe 12 below the container lid 10. However, the contact area between the waterproof and breathable membrane and the end face of the exhaust pipe 12 is small. The waterproof and breathable membrane is easily corroded after being impacted by liquid, which leads to the failure of the waterproof and breathable membrane and affects the normal use of the device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a breathable plug.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A breathable plug includes a plug body and a plug cap connected to the lower end of the plug body. The plug body includes an exhaust port connecting pipe for connecting an exhaust pipe. A membrane frame is fixedly provided at the lower end of the exhaust port connecting pipe. A waterproof and breathable membrane is attached to the lower end surface of the membrane frame. A fixing ring is also provided at the lower end of the exhaust port connecting pipe. The edge of the waterproof and breathable membrane is fitted with the lower end surface of the fixing ring. A plurality of retaining strips are arranged circumferentially at intervals at the lower end of the fixing ring. The lower ends of the retaining strips are inserted into the interior of the plug cap.

[0007] Preferably, a protrusion is provided at the lower end of the outer wall of the card strip, and a convex ring is provided on the inner wall of the plug cover. The protrusion and the convex ring are adapted to each other. When the plug body is connected to the plug cover, the convex ring can restrict the movement of the protrusion in the axial direction.

[0008] Preferably, the lower end of the inner wall of the protrusion is provided with an inclined portion. The inclined portion makes it easier for the end of the clip to deform when it is inserted into the plug, thus facilitating the insertion of the clip.

[0009] Preferably, the exhaust port connecting pipe, membrane frame, fixing ring, retaining strip and protrusion are integrally formed, and the plug and protruding ring are integrally formed.

[0010] Preferably, the number of card strips is at least three.

[0011] Preferably, when the plug body is connected with the plug cover, the uppermost end of the plug cover is below the fixing ring.

[0012] Preferably, the area of the contact surface between the waterproof and breathable membrane and the membrane frame accounts for 30%-70% of the area of the inner circle of the exhaust port connecting pipe, the area of the contact surface between the waterproof and breathable membrane and the membrane frame is large, the connection between the two is reliable, and the waterproof and breathable membrane is not easy to fall off.

[0013] Preferably, the radius of the plug cover is 1.5-2.5 times the outer diameter of the exhaust port connecting pipe, the radius of the plug cover is significantly larger than the outer diameter of the exhaust port connecting pipe, when the liquid shakes, the plug cover can block part of the liquid, and the plug cover can better protect the waterproof and breathable membrane.

[0014] The beneficial effects of the utility model are:

[0015] 1. When the device is used, the exhaust port connecting pipe is connected with the exhaust pipe, at this time the waterproof and breathable membrane below the membrane frame can avoid liquid overflow through the exhaust port, the plug cover can effectively alleviate the impact of the liquid on the waterproof and breathable membrane when the container shakes, and the normal use of the waterproof and breathable membrane is ensured.

[0016] 2. In the device, when the plug body is connected with the plug cover, the uppermost end of the plug cover is below the fixing ring, that is, there is a large gap between the plug cover and the fixing ring, so that the liquid accumulated in the plug cover does not touch the waterproof and breathable membrane.

[0017] 3. In the device, the area of the contact surface between the waterproof and breathable membrane and the membrane frame accounts for 30%-70% of the area of the inner circle of the exhaust port connecting pipe, the area of the contact surface between the waterproof and breathable membrane and the membrane frame is large, the connection between the two is reliable, and the waterproof and breathable membrane is not easy to fall off.

[0018] 4. In the device, the radius of the plug cover is 1.5-2.5 times the outer diameter of the exhaust port connecting pipe, the radius of the plug cover is significantly larger than the outer diameter of the exhaust port connecting pipe, when the liquid shakes, the plug cover can block part of the liquid, and the plug cover can better protect the waterproof and breathable membrane. DRAWINGS

[0019] Figure 1 A three-dimensional structure schematic diagram of the breathable plug is provided for the utility model;

[0020] Figure 2 A front view structure schematic diagram of the breathable plug is provided for the utility model;

[0021] Figure 3 A main section structure schematic diagram of the breathable plug is provided for the utility model;

[0022] Figure 4 A top view structure schematic diagram of the breathable plug is provided for the utility model;

[0023] Figure 5 A three-dimensional exploded structure schematic view of the breathable plug is provided in the utility model.

[0024] Figure 6 A sectional view structure schematic view of the container cover in the prior art.

[0025] In the figure: 1 exhaust port connecting pipe, 2 membrane holder, 3 waterproof breathable membrane, 4 fixing ring, 5 clamping strip, 6 protruding block, 7 inclined part, 8 plug cover, 9 protruding ring, 10 container cover, 11 exhaust port, 12 exhaust pipe. Specific implementation

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0027] Reference Figures 1-6 A breathable plug, comprising a plug body and a plug cover 8 connected with the lower end of the plug body, the plug body comprises an exhaust port connecting pipe 1 for connecting an exhaust pipe, the lower end of the exhaust port connecting pipe 1 is fixedly provided with a membrane holder 2, the lower end face of the membrane holder 2 is attached with a waterproof breathable membrane 3, the lower end of the exhaust port connecting pipe 1 is further provided with a fixing ring 4, the edge of the waterproof breathable membrane 3 is attached with the lower end face of the fixing ring 4, a plurality of clamping strips 5 are circumferentially arranged at the lower end of the fixing ring 4, the lower end of the clamping strip 5 is inserted into the inside of the plug cover 8, the lower end of the outer wall of the clamping strip 5 is provided with a protruding block 6, the inner wall of the plug cover 8 is provided with a protruding ring 9, the protruding block 6 is matched with the protruding ring 9, when the plug body is connected with the plug cover 8, the protruding ring 9 can limit the movement of the protruding block 6 in the axial direction, the lower end of the inner wall of the protruding block 6 is provided with an inclined part 7, the setting of the inclined part 7 makes the end part more easily deformed when the clamping strip 5 is inserted into the plug cover, facilitating the insertion of the clamping strip 5, the number of clamping strips 5 is at least 3, in the embodiment, the number of clamping strips 5 is 4.

[0028] The exhaust port connecting pipe 1, the membrane holder 2, the fixing ring 4, the clamping strip 5 and the protruding block 6 are integrally formed, the plug cover 8 and the protruding ring 9 are integrally formed, and the material can be selected from high-density polyethylene or polypropylene.

[0029] When the plug body is connected with the plug cover 8, the uppermost end of the plug cover 8 is located below the fixing ring 4.

[0030] When the plug body is connected with the plug cover 8, the uppermost end of the plug cover 8 is located below the fixing ring 4. Figure 6 As shown in the figure, the exhaust port connecting pipe 1 is connected with the exhaust pipe 12 below the container cover 10, at this time the waterproof breathable membrane 3 below the membrane holder 2 can avoid liquid overflow through the exhaust port 11, and the plug cover 8 can effectively alleviate the impact of liquid on the waterproof breathable membrane 3 when the container shakes, thereby ensuring the normal use of the waterproof breathable membrane 3.

[0031] In the device, when the plug body is connected with the plug cover 8, the uppermost end of the plug cover 8 is below the fixing ring 4, that is, there is a large gap between the plug cover 8 and the fixing ring 4, so as to avoid the liquid accumulated in the plug cover 8 from touching the waterproof and breathable film 3.

[0032] In the device, the area of the contact surface between the waterproof and breathable film 3 and the film frame 2 accounts for 30%-70% of the area of the inner circle of the exhaust port connecting pipe 1, the area of the contact surface between the waterproof and breathable film 3 and the film frame 2 is large, the connection between the two is reliable, and the waterproof and breathable film 3 is not easy to fall off.

[0033] In the device, the radius of the plug cover 8 is 1.5-2.5 times the outer diameter of the exhaust port connecting pipe 1, the radius of the plug cover 8 is obviously larger than the outer diameter of the exhaust port connecting pipe 1, when the liquid shakes, the plug cover 8 can block part of the liquid, and the plug cover 8 can better protect the waterproof and breathable film 3.

[0034] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A vent plug, comprising a plug body and a plug cover (8) connected to the lower end of the plug body, the plug body comprising an exhaust port connecting pipe (1) for connecting an exhaust pipe, a membrane holder (2) being fixedly arranged at the lower end of the exhaust port connecting pipe (1), and a waterproof and air-permeable membrane (3) being attached to the lower end face of the membrane holder (2), characterized in that, The lower end of the exhaust port connecting pipe (1) is further provided with a fixing ring (4), the edge of the waterproof and breathable membrane (3) is in close contact with the lower end surface of the fixing ring (4), and the lower end of the fixing ring (4) is circumferentially arranged with a plurality of clamping strips (5), and the lower end of the clamping strip (5) is inserted into the inside of the plug cover (8).

2. A breather plug according to claim 1, wherein, The lower end of the outer wall of the clamping strip (5) is provided with a protruding block (6), the inner wall of the plug cover (8) is provided with a protruding ring (9), and the protruding block (6) is matched with the protruding ring (9).

3. A breather plug according to claim 2, wherein, The lower end of the inner wall of the protruding block (6) is provided with an inclined part (7).

4. A breather plug according to claim 3, wherein, The exhaust port connecting pipe (1), the membrane frame (2), the fixing ring (4), the clamping strip (5) and the protruding block (6) are integrally formed, and the plug cover (8) and the protruding ring (9) are integrally formed.

5. The breather plug of claim 1, wherein, The number of the clamping strip (5) is at least 3.

6. The breather plug of claim 1, wherein, When the plug body is connected with the plug cover (8), the uppermost end of the plug cover (8) is located below the fixing ring (4).

7. A breather plug according to any one of claims 1 to 6, wherein The area of the contact surface between the waterproof and breathable membrane (3) and the membrane frame (2) accounts for 30%-70% of the area of the inner circle of the exhaust port connecting pipe (1).

8. A breather plug according to claim 7, wherein, The radius of the plug cover (8) is 1.5-2.5 times the outer diameter of the exhaust port connecting pipe (1).

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