Pressure relief and exhaust assembly, bottle cap and liquid storage container

Abstract

The utility model discloses a pressure relief and exhaust assembly, a bottle cap and a liquid storage container, the pressure relief and exhaust assembly comprises an upper sleeve ring and a lower sleeve seat, the upper sleeve ring comprises an exhaust ring, a support frame is arranged in the exhaust ring, a breathable film is arranged on the support frame, and an annular baffle block is arranged around the support frame; an annular base is arranged at the bottom end of the lower sleeve seat, an annular guide block is arranged on the annular base, and the inner side of the annular guide block is connected with a hollow supporting seat; the annular check block is located on the supporting base, and a plurality of first exhaust grooves are formed in the side face of the supporting base. A plurality of second exhaust grooves are formed in the side face of the annular base. The first exhaust groove and the second exhaust groove are arranged at intervals, and a channel communicated with the first exhaust groove and the second exhaust groove is arranged between the lower sleeve seat or the upper sleeve ring and the lower sleeve seat. And the bottom end of the upper lantern ring is clamped on the annular base. The pressure relief and exhaust assembly has excellent effects of preventing liquid from splashing to the breathable film and relieving pressure and exhausting air.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief and venting components, specifically to a pressure relief and venting assembly and a bottle cap and liquid storage container including the pressure relief and venting assembly. Background Technology

[0002] When liquids are stored in containers, changes in ambient temperature and air pressure can cause liquid vaporization and the volatilization of gases dissolved in the liquid. If these gases are not expelled from the container in time, the internal pressure will rise, potentially leading to the container bursting.

[0003] Application No. 201520528684.2 discloses a waterproof and breathable cap, including an outer shell and a sealing body placed inside the outer shell. The sealing body has a through hole, and a breathable membrane is fixed to the upper surface of the sealing body. Four blocks are evenly spaced on the outer surface of the sealing body, with the thickness of the blocks gradually decreasing from top to bottom to form a slope. Three protrusions are provided around the bottom surface of the inner side of the outer shell. This breathable cap is installed at the rear end of a car headlight, mainly used to displace the gas inside the headlight to maintain pressure balance inside the headlight. However, the aforementioned waterproof and breathable cap is specifically designed for car headlights and cannot be used for container caps.

[0004] Application No. 202020643446.7 discloses a liquid-resistant bottle cap, which includes an inner ring and an outer seat. The inner ring is detachably fixed inside the outer seat. The inner ring includes a vent ring, a vent ring connecting ring, a waterproof and breathable membrane, and retaining strips. Multiple retaining strips are arranged circumferentially on the outer side of the vent ring, with the lower end of each strip protruding from the lower surface of the vent ring. The waterproof and breathable membrane is fixedly connected to the vent ring. Multiple drainage holes are circumferentially spaced at the bottom of the outer seat. In use, gas in the liquid storage container can enter the outer seat through the gaps between the retaining strips, and then enter the inner ring through the gap between the retaining strips and the bottom of the outer seat. It then enters the threaded cap connecting ring and is discharged outside the liquid storage container through the vent holes. Liquid splashed into the outer seat enters the outer seat through the gaps between the retaining strips, is discharged through the drainage holes, and returns to the liquid storage container, preventing liquid spillage.

[0005] The aforementioned anti-liquid corrosion bottle caps can prevent liquid spillage and relieve pressure and vent gas for a certain period of time, but their service life is relatively short. After prolonged use, the bottle caps may deform or even crack, requiring frequent replacement, which increases usage costs and causes inconvenience to manufacturers. Utility Model Content

[0006] In view of the above-mentioned deficiencies of the prior art, the present invention provides a pressure relief and venting assembly. This assembly has a first venting groove and a second venting groove spaced apart on the sides of a support base and an annular base. The pressure relief and venting effect is achieved through the first and second venting grooves. In use, gas rises through the second venting groove to the first venting groove, enters the space enclosed by the support base and the annular baffle, and is then discharged into the atmosphere through a breathable membrane, achieving the pressure relief and venting effect. Simultaneously, if splashed liquid enters the second venting groove, the liquid is blocked by the support base because the second venting groove is spaced apart from the first venting groove, preventing the liquid from entering the first venting groove. This reduces the risk of liquid adhering to the breathable membrane and effectively prevents liquid overflow. Therefore, the present invention also provides a bottle cap including the above-mentioned pressure relief and venting assembly and a liquid storage container including the pressure relief and venting assembly or the bottle cap.

[0007] In a first aspect, this utility model provides a pressure relief and exhaust assembly, including an upper collar and a lower sleeve.

[0008] The upper collar includes an exhaust ring, a support frame is provided inside the exhaust ring, a breathable membrane is installed on the support frame, and an annular block is provided around the support frame;

[0009] The lower sleeve has an annular base at its bottom end, and an annular guide block is provided on the annular base. The annular guide block is located at one end of the annular base near the center. A hollow support is connected to the inner side of the annular guide block, and the bottom end of the support is located on the lower sleeve. The annular stop is located on the support.

[0010] The support base has a plurality of first exhaust grooves on its side; the annular base has a plurality of second exhaust grooves on its side, the openings of the first exhaust grooves and the second exhaust grooves both extend toward the annular guide block, and the first exhaust grooves and the second exhaust grooves are spaced apart; a channel connecting the first exhaust grooves and the second exhaust grooves is provided between the lower sleeve or the upper sleeve and the lower sleeve; the bottom end of the upper sleeve is engaged with the annular base by the annular guide block.

[0011] Using the above technical solution, the gas entering the second exhaust groove passes through the channel to the first exhaust groove, enters the space enclosed by the support base and the annular baffle, and is then discharged into the external environment through the breathable membrane, achieving the effect of pressure relief and exhaust. When liquid splashes into the second exhaust groove, because the second exhaust groove is located at the bottom of the lower sleeve and the second exhaust groove is spaced apart from the first exhaust groove, the liquid entering the second exhaust groove is blocked by the support base and cannot directly enter the support base, thus avoiding the impact of liquid splashing on the breathable membrane.

[0012] In a preferred embodiment, a gap is left between the top of the annular guide block and the upper sleeve ring, and the gap forms a channel connecting the first exhaust groove and the second exhaust groove, wherein the first exhaust groove is opened on the top side of the support base.

[0013] A gap is left between the top of the annular guide block and the upper ring for gas flow. When the gas enters the second exhaust groove, it passes through this channel into the first exhaust groove, and then into the space enclosed by the support base and the annular baffle, and is discharged from the breathable membrane, thereby achieving the pressure relief and exhaust effect.

[0014] In a preferred embodiment, a transition channel is provided between the first exhaust slot and the adjacent left and / or right second exhaust slot. The transition channel is located on the annular guide block and is a channel connecting the first exhaust slot with the adjacent left and / or right second exhaust slot.

[0015] The support base is provided with a first venting groove, and the annular base is provided with a second venting groove. A transition channel is provided between the first venting groove and the adjacent left and / or right second venting groove. When the upper ring is fitted onto the annular base, the gas entering the second venting groove enters the first venting groove through the transition channel, and is discharged to the external environment through the breathable membrane connected to the first venting groove. This achieves the effect of pressure relief and venting, avoiding the risk of bottle cap deformation or cracking caused by poor venting.

[0016] As a more preferred embodiment, the transition channel is a stepped, landslide, or sloping structure.

[0017] In a preferred embodiment, a water receiving platform is provided at the top of the lower sleeve at the corresponding position of the breathable membrane, and the support seat surrounds the outside of the water receiving platform.

[0018] After long-term use, if the gas entering the breathable membrane condenses into droplets, the droplets on the breathable membrane will drip directly into the water receiving platform. After accumulating on the water receiving platform, the droplets will enter the second air vent through the first exhaust channel and the transition channel, ensuring the normal discharge of the liquid entering the lower sleeve.

[0019] The aforementioned annular stop is located on the support base and can be implemented in various ways. For example, the lower end face of the annular stop can contact and seamlessly connect with the upper end face of the support base; or, the lower end of the annular stop can be connected to the upper end of the support base using a mortise and tenon structure. There are no particular restrictions on the structure of the support base. In practical use, for ease of use, the support base is usually also designed to be annular.

[0020] In a preferred embodiment, the water receiving platform has a planar structure.

[0021] The water receiving platform is a planar structure used to collect condensed droplets on the breathable membrane.

[0022] In a more preferred embodiment, the water receiving platform has a raised structure.

[0023] The water receiving platform has a raised structure, which makes it a sloping structure with a high middle and low sides. When the liquid condensed from the breathable membrane enters the water receiving platform, the liquid slides from the sloping structure to the bottom, keeping the liquid at a greater distance from the breathable membrane. This reduces the risk of liquid splashing back into the breathable membrane and effectively protects the breathable membrane.

[0024] In a more preferred embodiment, the protruding structure is conical or mountain-shaped.

[0025] The water receiving platform can be set in the shape of a cone or a mountain peak. Of course, the shape of the water receiving platform is not limited to these. Any similar structure that achieves a high middle and low ends can be used in this application.

[0026] In a preferred embodiment, the bottom of the first venting groove is not higher than the bottom of the water receiving platform.

[0027] The bottom of the first exhaust trough is set to be lower than or flush with the bottom of the water receiving platform, so that the droplets collected on the water receiving platform can be discharged in time, avoiding the accumulation of liquid on the water receiving platform and the re-splashing of droplets into the breathable membrane.

[0028] The upper collar and lower sleeve are made of rigid plastic, and can be made of any of ABS, PE, PP, or PVC. However, the material of the upper collar and lower sleeve is not limited to these; other metal or non-metal materials such as stainless steel and glass can also be selected as needed.

[0029] In a preferred embodiment, the side of the annular guide block is provided with a guide surface, which extends to the annular base.

[0030] A guide surface is set on the side of the transition channel, and the bottom end of the upper collar approaches the annular base from the guide surface, realizing the quick and stable installation of the upper collar and the lower sleeve.

[0031] In a more preferred embodiment, the outer diameter of the guide surface gradually increases in the direction close to the annular base.

[0032] A guide surface with a gradually increasing outer diameter is provided on the side of the transition channel to facilitate the quick sliding of the upper collar into the annular base.

[0033] In a more preferred embodiment, the guide surface is interference-fitted with the bottom end of the upper collar.

[0034] The guide surface and the bottom end of the upper collar are connected by an interference fit to achieve the technical effect of locking the upper collar with the annular base, so that the upper collar is fitted on the annular base and will not easily move relative to it.

[0035] In a more preferred embodiment, the bottom end of the upper collar protrudes inward to form a ring-shaped protrusion, and the inner side of the annular base extends inward to form a groove, with the bottom end of the upper collar being engaged with the annular base through the groove.

[0036] The bottom end of the upper collar protrudes inward, and the inner side of the annular base extends inward to form a groove. When the bottom end of the upper collar enters the annular base from the guide surface, the inward protruding part of the bottom end of the upper collar quickly inserts into the groove on the inner side of the annular base, making the connection between the upper collar and the lower collar more secure.

[0037] In a preferred embodiment, the breathable membrane is made of expanded polytetrafluoroethylene.

[0038] The breathable membrane is made of expanded polytetrafluoroethylene. Gas can pass through the breathable membrane to enter and exit, while dust and other impurities in the external environment cannot enter. While ensuring breathability, it will not contaminate the solution in the storage container.

[0039] In a preferred embodiment, a connecting ring is provided at the top of the exhaust ring.

[0040] When applying a pressure relief and venting assembly to a specific scenario, it is necessary to connect the assembly to a solid carrier in the scenario. For example, when used in a liquid storage container, the assembly needs to be installed inside the container. Alternatively, the assembly can be directly bonded to the container, or a connecting ring can be provided on the assembly, and a cap connecting ring can be provided at the bottom of the container's cap. The connecting ring of the assembly can be connected to the cap connecting ring of the container by interference fit, threaded connection, or other means.

[0041] In a preferred embodiment, the bottom end of the first exhaust groove is higher than the annular base.

[0042] In a second aspect, the present invention provides a bottle cap, comprising a cap body having a vent hole and the aforementioned pressure relief and venting assembly, wherein the venting ring of the pressure relief and venting assembly is connected in communication with the vent hole of the cap body.

[0043] Install the exhaust ring of the pressure relief and exhaust assembly at the vent hole position of the cover, so that the gas entering the exhaust ring can be discharged through the vent hole.

[0044] In a preferred embodiment, a cover connecting ring is provided at the bottom of the cover, a connecting ring is provided at the top of the exhaust ring, and the connecting ring of the pressure relief and exhaust assembly is connected to the cover connecting ring.

[0045] The aforementioned pressure relief and venting assembly can be combined with the cap to form a new type of bottle cap. Connecting the cap's connecting ring at the bottom end to the connecting ring of the pressure relief and venting assembly completes the connection between the cap and the assembly. The connection method is unrestricted; conventional methods include interference fit or threaded connection.

[0046] A third aspect of the present invention provides a liquid storage container, including a container body, a vent hole provided on the container body, and the aforementioned pressure relief and venting assembly provided inside the container body, wherein the vent ring of the pressure relief and venting assembly is connected in communication with the vent hole of the container body.

[0047] In a fourth aspect, the present invention provides a liquid storage container, comprising a container body and the aforementioned cap, wherein the cap is disposed on the container body.

[0048] After the pressure relief and venting assembly is connected to the cap, the assembled cap is placed on top of the liquid storage container. The connection method between the liquid storage container and the cap is unrestricted, but a conventional method is a threaded connection: the bottom of the cap has an internal thread, and the mouth of the liquid storage container has an external thread. After the liquid in the storage solution vaporizes, the gas passes through the pressure relief and venting assembly into the vent on the cap, and then into the atmosphere, achieving the venting effect.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] (1) The pressure relief and exhaust assembly of this utility model has a first exhaust groove on the side of the support base and a second exhaust groove on the side of the annular base. The first exhaust groove and the second exhaust groove are spaced apart and cannot be directly connected, so that the liquid entering the second exhaust groove cannot enter the lower sleeve, thus avoiding liquid splashing into the breathable membrane and reducing the risk to the function of the breathable membrane. In addition, after the gas entering the second exhaust groove evaporates and enters the first exhaust groove, it is directly discharged into the environment from the breathable membrane, ensuring the normal pressure relief and exhaust function.

[0051] (2) The pressure relief and exhaust assembly of this utility model sets the exhaust groove on the side of the lower sleeve, which breaks the conventional design of setting the exhaust groove at the bottom of the lower sleeve and provides a new idea for the structural design of the pressure relief and exhaust assembly.

[0052] (3) The pressure relief and exhaust assembly of this utility model has excellent effects in preventing liquid overflow and relieving pressure and exhausting air, and extends the service life of traditional pressure relief and exhaust assemblies, expands the scope of application, and is easy to promote widely.

[0053] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0054] Figure 1 This is a three-dimensional structural diagram of a liquid corrosion resistant bottle cap in the existing technology;

[0055] Figure 2 This is a schematic diagram of the combined structure of the inner ring and outer seat of a liquid corrosion resistant bottle cap in the prior art;

[0056] Figure 3 This is a schematic diagram of the combined structure of the pressure relief and exhaust assembly of this utility model;

[0057] Figure 4 This is a cross-sectional view of the combined structure of the pressure relief and exhaust assembly of this utility model;

[0058] Figure 5 This is a schematic diagram of the structure of the lower sleeve in the pressure relief and exhaust assembly of this utility model;

[0059] Figure 6 This is a schematic diagram of the upper collar structure in the pressure relief and exhaust assembly of this utility model;

[0060] Figure 7 This is a schematic diagram of the structure of the upper collar and lower sleeve before assembly in the pressure relief and exhaust assembly of this utility model;

[0061] Figure 8 This is a schematic diagram of the structure of the pressure relief and exhaust assembly of this utility model after the upper collar and lower sleeve are assembled;

[0062] Figure 9 This is another structural schematic diagram of the lower sleeve in the pressure relief and exhaust assembly of this utility model;

[0063] Figure 10 This is a schematic diagram of the structure of the bottle cap of this utility model;

[0064] Figure 11 This is a schematic diagram of the structure of the liquid storage container of this utility model.

[0065] Among them: 1-exhaust ring, 2-exhaust ring connecting ring, 3-waterproof and breathable membrane, 4-stripping, 5-convex ring, 6-net frame, 7-outer sleeve seat, 8-drain hole, 9-upper sleeve ring, 10-lower sleeve seat, 11-support frame, 12-connecting ring, 14-annular stop block, 15-water receiving platform, 16-support seat, 17-first exhaust groove, 18-second exhaust groove, 19-transition channel, 20-annular base, 21-groove, 22-annular protrusion, 23-guide surface, 24-cover, 25-container body, 26-annular guide block, 27-gap. Detailed Implementation

[0066] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the embodiments described below.

[0067] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0068] When liquids are stored in sealed containers, changes in ambient temperature or air pressure can cause the liquid to vaporize and the dissolved gases to evaporate. It is necessary to release the gases from the containers in a timely manner; otherwise, if the gases accumulate to a certain extent, there is a risk of the containers bursting.

[0069] Application number 202020643446.7 discloses a liquid corrosion resistant bottle cap, such as... Figure 1 , 2 As shown, the anti-corrosion bottle cap includes an inner ring and an outer seat 7. The inner ring is detachably fixed to the outer seat 7. The inner ring includes a vent ring 1, a vent ring connecting ring 2, a waterproof and breathable membrane 3, and a retaining strip 4. A mesh frame 6 is integrally provided on the inner side of the junction of the vent ring 1 and the vent ring connecting ring. The waterproof and breathable membrane 3 is attached to the lower side of the mesh frame 6 and covers the holes of the mesh frame 6. The bottom of the outer seat 7 has a plurality of drainage holes 8 spaced apart circumferentially. The anti-corrosion bottle cap is placed on the liquid storage container. When the liquid storage container is transported, the gas generated in the liquid storage container enters the interior of the outer seat 7 through the drainage holes 8 on the outer seat 7, then passes through the waterproof and breathable membrane 3 into the inner ring, and is then discharged outside the liquid storage container.

[0070] The aforementioned liquid corrosion resistant bottle caps are widely used in the market. However, after a period of use, the breathability of these caps decreases, rendering them unusable and requiring replacement. Frequent replacement of these caps increases usage costs and causes inconvenience to users.

[0071] The inventors of this application, through repeated research on the anti-corrosion bottle cap, discovered that the change in the relative position of the retaining strip 4 and the drain hole 8 during installation or use is a key factor affecting its ventilation function. The retaining strip 4 of the aforementioned anti-corrosion bottle cap is located on the outer side of the inner ring, and the drain hole 8 is located at the bottom circumferential position of the outer sleeve 7. Ideally, the retaining strip 4 and the drain hole 8 are completely offset. However, during installation or use, the retaining strip 4 and the drain hole 8 overlap to a certain extent, causing the retaining strip 4 to cover part of the drain hole 8, thus affecting the normal venting and drainage of liquid from the drain hole 8.

[0072] In addition, liquid splashing from the storage container and covering the breathable membrane is another key factor affecting its breathability. The inner ring is a hollow cavity. After the inner ring is connected to the outer seat 7, the drain hole 8 on the outer seat 7 and the waterproof breathable membrane 3 on the inner ring are in a continuous state with no obstruction between them. When liquid in the storage container splashes out through the drain hole 8, it will splash into the breathable membrane that is directly opposite the drain hole 8. The liquid covers the breathable membrane, further reducing its function.

[0073] To solve the aforementioned technical problems, the inventors of this application have provided venting grooves on the side of the lower sleeve 10, instead of placing the venting grooves at the bottom. Specifically, a first venting groove 17 is provided on the side of the support base 16, and a second venting groove 18 is provided on the side of the annular base 20. The first venting groove 17 and the second venting groove 18 are staggered (or spaced apart). When liquid in the storage container enters the second venting groove 18, it is blocked by the support base 16 and cannot enter the lower sleeve 10, effectively preventing liquid from entering the lower sleeve 10. This avoids the risk of liquid splashing into the breathable membrane at the upper end of the lower sleeve 10 and protects the breathable membrane. In addition, since the first exhaust groove 17 and the second exhaust groove 18 are connected by a channel provided between the lower sleeve 10 or the upper sleeve 9 and the lower sleeve 10, the gas entering the second exhaust groove 18 enters the first exhaust groove 17 through this channel, and then enters the lower sleeve 10, and is discharged from the breathable membrane at the upper end of the lower sleeve 10, thus ensuring the normal pressure relief and exhaust function and avoiding the risk of deformation or cracking caused by poor exhaust.

[0074] A first aspect of this invention provides a pressure relief and venting assembly. This assembly provides pressure relief and venting functionality, similar to a vent plug, vent valve, or breather valve.

[0075] The pressure relief and exhaust assembly in this application includes an upper collar 9 and a lower sleeve 10. The upper collar 9 and the lower sleeve 10 are made of rigid plastic, and any one of ABS, PE, PP, or PVC can be selected. Of course, other metal or non-metal materials such as stainless steel and glass can also be selected as needed.

[0076] The upper sleeve 9 includes an exhaust ring 1 and a connecting ring 12 disposed at the top of the exhaust ring 1. A support frame 11 is disposed inside the exhaust ring 1, and a breathable membrane is installed on the support frame 11. The bottom end of the upper sleeve 9 is sleeved on the lower sleeve 10.

[0077] The support frame 11 can be cross-shaped, perforated, or other structures. The support frame 11 provides space for the installation of the breathable membrane and provides support for the breathable membrane to prevent it from breaking under external force after long-term use.

[0078] The breathable membrane can be heat-fused to the support frame 11, or other methods can be used, which can be flexibly selected according to the needs. The breathable membrane is made of expanded polytetrafluoroethylene. The use of this material allows gas to pass through the breathable membrane while preventing dust and other impurities from entering. This ensures breathability without contaminating the liquid in the storage container.

[0079] The connecting ring 12 at the top of the vent ring 1 is for connecting the pressure relief and venting assembly to other caps. The connecting ring 12 usually has external threads on its outer side, and it is threaded to the cap 24 on the outer bottle cap. Of course, the connecting ring 12 and the cap connecting ring at the bottom of the cap 24 can also be interference-fitted.

[0080] An annular stop 14 is provided on the outer side of the support frame 11. The annular stop 14 surrounds the outer side of the support frame 11. When the upper sleeve 9 is fitted onto the lower sleeve 10, it contacts the support seat 16 at the top of the lower sleeve 10. The space enclosed by the support seat 16 and the annular stop 14 provides a closed environment for the support frame 11, preventing liquid in the liquid storage container from entering the lower sleeve 10 and affecting the breathable membrane on the support frame 11.

[0081] The lower sleeve 10 has an annular base 20 at its bottom end, and an annular guide block 26 is provided on the annular base 20. The annular guide block 26 is located at the end of the annular base 20 near the center, and the support base 16 is located inside the annular guide block 26. The annular guide block 26 and the support base 16 can be integrally connected or separately connected. The side of the support base 16 has a plurality of first exhaust grooves 17, the openings of which extend toward the annular guide block 26. The bottom end of the support base 16 is located on the lower sleeve 10.

[0082] The first exhaust groove 17 is provided on the side of the support base 16. The first exhaust groove 17 is usually provided at the top or near the top of the support base 16, or it can be provided at other positions of the support base 16. Since the annular guide block 26 is located on the annular base 20, the first exhaust groove 17 is usually set higher than the annular base 20.

[0083] The opening of the first exhaust groove 17 extends toward the annular guide block 26. The opening of the first exhaust groove 17 may or may not penetrate the annular guide block 26.

[0084] The side of the annular base 20 is provided with a plurality of second exhaust grooves 18, which extend toward the annular guide block 26. The first exhaust groove 17 and the second exhaust groove 18 are spaced apart. A channel connecting the first exhaust groove 17 and the second exhaust groove 18 is provided between the lower sleeve 10 or the upper sleeve 9 and the lower sleeve 10.

[0085] The channel here can take various forms. It can be a gap 27 between the top of the annular guide block 26 and the upper sleeve 9, allowing the upper sleeve 9 to connect with the lower sleeve 10, thus connecting the first exhaust groove 17 and the second exhaust groove 18. Alternatively, a transition channel 19 can be provided on the annular guide block 26, located between the first exhaust groove 17 and the adjacent left and / or right second exhaust groove 18, connecting the second exhaust groove 18 and the first exhaust groove 17. The form of the channel is not limited to these; any structure that can connect the first exhaust groove 17 and the second exhaust groove 18 can be used in this application.

[0086] The term "interval setting" here refers to the first venting groove 17 and the second venting groove 18 being staggered. The second venting groove 18 is directly opposite the first venting groove 17; that is, the support base 16 is not slotted in this location, preventing liquid entering the second venting groove 18 from entering the first venting groove 17. Of course, the first venting groove 17 and the second venting groove 18 can be alternately set according to usage requirements.

[0087] The transition channel 19 can be located at the top of the annular guide block 26 or inside the annular guide block 26. When the first exhaust groove 17 is located at the top of the support base 16 and passes through the annular guide block 26, the transition channel 19 is located at the top of the annular guide block 26; when the first exhaust groove 17 does not pass through the annular guide block 26, the transition channel 19 is located inside the annular guide block 26.

[0088] The second exhaust groove 18 is disposed on the side of the annular base 20 and can extend further toward the annular guide block 26, so that the end point of the second exhaust groove 18 contacts the support base 16.

[0089] When the transition channel 19 is set to connect the first exhaust groove 17 and the second exhaust groove 18, the transition channel 19 can be a stepped, slope-shaped or ramp-shaped structure.

[0090] A water receiving platform 15 is provided at the top of the lower sleeve 10 at the corresponding position of the breathable membrane, and a support base 16 surrounds the outside of the water receiving platform 15. After the gas enters the breathable membrane, condensation may occur on the breathable membrane, forming small droplets. The water receiving platform 15 is provided at the corresponding position of the breathable membrane to collect the small droplets.

[0091] The water receiving platform 15 can be a planar structure or an upwardly convex structure, such as a conical or mountain-shaped structure.

[0092] During use, after the liquid vaporizes, it enters the breathable membrane through the second exhaust channel 18, the transition channel 19, and the first exhaust channel 17. Gas condensation may occur on the breathable membrane, and the condensed liquid droplets fall into the water receiving platform 15. To avoid droplet accumulation in the water receiving platform 15, the bottom of the first exhaust channel 17 is set to be lower than or flush with the bottom of the water receiving platform 15, so that water droplets on the water receiving platform 15 can quickly enter the second exhaust channel 18 through the first exhaust channel 17 and the transition channel 19, and flow out from the second exhaust channel 18.

[0093] The annular guide block 26 has a guide surface 23 with a gradually increasing outer diameter on its side, which extends towards the annular base 20. With the guide surface 23 on the side of the annular guide block 26, the bottom end of the upper collar 9 enters the annular base 20 from the guide surface 23, achieving quick and stable installation of the upper collar 9 and the lower sleeve 10. To increase the firmness of the connection between the upper collar 9 and the lower sleeve 10, the bottom end of the upper collar 9 is designed to protrude inwards, and the inner side of the annular base 20 extends inwards to form a groove 21. When the bottom end of the upper collar 9 enters the annular base 20 from the guide surface 23, the inwardly protruding portion of the bottom end of the upper collar 9 quickly inserts into the groove 21 on the inner side of the annular base 20, and the bottom end of the upper collar 9 is secured to the annular base 20 through the groove 21.

[0094] The transition channel 19 connects the first venting channel 17 and the adjacent second venting channel 18. It serves two purposes: firstly, for pressure relief and venting; secondly, when droplets are present in the water receiving platform 15, they enter the transition channel 19 from the first venting channel 17 and drain into the second venting channel 18. To facilitate liquid discharge, the transition channel 19 is designed as a stepped, sloping, or ramp-shaped structure. Liquid quickly enters the second venting channel 18 through the transition channel 19 and returns to the storage container.

[0095] In a second aspect, the present invention provides a bottle cap having a cap body 24 with vent holes and further comprising the aforementioned pressure relief and venting assembly, wherein the venting ring 1 of the pressure relief and venting assembly is connected in communication with the vent holes of the cap body 24.

[0096] Typically, a cover connecting ring is provided at the bottom of the cover 24, and a connecting ring 12 is provided at the top of the exhaust ring 1. The connecting ring 12 of the pressure relief and exhaust assembly is connected to the cover connecting ring.

[0097] A third aspect of the present invention provides a liquid storage container, including a container body 25, a vent hole provided on the container body 25, and the aforementioned pressure relief and venting assembly provided inside the container body 25, wherein the vent ring 1 of the pressure relief and venting assembly is connected in a through connection with the vent hole of the container body 25.

[0098] In a fourth aspect, the present invention provides a liquid storage container, including a container body 25 and the aforementioned bottle cap, wherein the bottle cap is disposed on the container body 25.

[0099] Example 1

[0100] A pressure relief and venting assembly, such as Figure 3 , 4 5 and 6 include an upper collar 9 and a lower sleeve 10. The upper collar 9 includes an exhaust ring 1 and a connecting ring 12 disposed at the top of the exhaust ring 1. A support frame 11 is disposed inside the exhaust ring 1. The support frame 11 here is a cross-shaped mesh frame, but a cross-shaped or mesh-shaped frame can also be selected. A breathable membrane is installed on the support frame 11. The breathable membrane can be fused to the support frame 11 by heat fusion. An annular stop 14 is disposed on the outer side of the support frame 11, and the annular stop 14 is disposed around the support frame 11. The annular stop 14 can be disposed close to the outer edge of the support frame 11, or it can be disposed at a certain distance from it.

[0101] A water receiving platform 15 is provided at the top center of the lower sleeve 10. The water receiving platform 15 can be a planar structure or a convex structure, such as a cone or a mountain peak shape. In this embodiment, a cone shape is chosen to facilitate the rapid sliding of liquid into the bottom of the water receiving platform 15. A hollow support base 16 is provided around the outer side of the water receiving platform 15. An annular stop block 14 is engaged with the support base 16. The contact surface between the annular stop block 14 and the support base 16 can be a planar surface or a tenon-and-mortise joint connection surface, so that the annular stop block 14 and the support base 16 fit completely.

[0102] The bottom end of the lower sleeve 10 is provided with an annular base 20, and an annular guide block 26 is provided on the annular base 20. The annular guide block 26 is located at the end of the annular base 20 near the center. A gap 27 is left between the top of the annular guide block 26 and the upper sleeve 9. A hollow support seat 16 is connected to the inner side of the annular guide block 26. The bottom end of the support seat 16 is located on the lower sleeve 10. The support seat 16 surrounds the outer side of the water receiving platform 15.

[0103] The annular stop 14 is located on the support base 16. The top side of the support base 16 is provided with a plurality of first exhaust grooves 17, and the openings of the first exhaust grooves 17 extend toward the annular guide block 26.

[0104] A plurality of second venting grooves 18 are provided on the side of the annular base 20, extending towards the annular guide block 26. Since the first venting groove 17 is located on the side of the support base 16, and the second venting grooves 18 are located on the side of the annular base 20, the first venting groove 17 is at a relatively high position, and the second venting groove 18 is at a relatively low position. The first venting groove 17 and the second venting groove 18 are spaced apart, preventing liquid entering the second venting groove 18 from entering the water receiving platform 15. A transition channel 19 is provided between the first venting groove 17 and the second venting groove 18 on its right side to connect the first venting groove 17 and the second venting groove 18 on its right side.

[0105] During use, after the liquid vaporizes, it enters the breathable membrane through the second exhaust channel 18, the transition channel 19, and the first exhaust channel 17. Gas condensation may occur on the breathable membrane, and the condensed liquid droplets fall into the water receiving platform 15. To avoid droplet accumulation in the water receiving platform 15, the bottom of the first exhaust channel 17 is set to be lower than or flush with the bottom of the water receiving platform 15, so that water droplets on the water receiving platform 15 can quickly enter the second exhaust channel 18 through the first exhaust channel 17 and the transition channel 19, and flow out from the second exhaust channel 18.

[0106] The pressure relief and venting effect can be achieved in two ways. First, a transition channel 19 is provided between the first venting groove 17 and the second venting groove 18, allowing gas entering the second venting groove 18 to pass through the transition channel 19 into the first venting groove 17 and then exit through the vent membrane. Second, the gap 27 between the top of the annular guide block 26 and the upper sleeve ring 9 allows gas entering the second venting groove 18 to pass through the gap 27 into the first venting groove 17 and then exit through the vent membrane to the external environment. Both methods can be used individually or simultaneously, and both can achieve excellent pressure relief and venting effects.

[0107] In this embodiment, two methods are used simultaneously. Of course, in other embodiments, the transition channel 19 or the gap 27 can be set separately. When the transition channel 19 is set, the water receiving platform 15 can be set at the same time to cooperate with the transition channel 19 to facilitate the discharge of condensate.

[0108] In this embodiment, since the second venting groove 18 is located at the bottom end of the lower sleeve 10 and the first venting groove 17 is located at the top end of the lower sleeve 10, when liquid splashes into the second venting groove 18 during use, because the first venting groove 17 and the second venting groove 18 are spaced apart, the liquid entering the second venting groove 18 is blocked by the support seat 16 and cannot directly enter the lower sleeve 10 from the second venting groove 18 and / or the first venting groove 17. In addition, since the second venting groove 18 is located at the bottom end and the first venting groove 17 is located at the top end, the liquid splashed into the second venting groove 18 cannot enter the first venting groove 17 through the transition channel 19, thus avoiding liquid splashing covering the breathable membrane and reducing the function of the breathable membrane.

[0109] In this embodiment, a transition channel 19 is provided between the first exhaust groove 17 and the adjacent right-side second exhaust groove 18. Alternatively, a transition channel 19 can be provided between the first exhaust groove 17 and the adjacent left-side second exhaust groove 18. Of course, transition channels 19 can also be provided on both the left and right sides (e.g., Figure 9 ).

[0110] The transition channel 19 can be configured as a ramp to facilitate the discharge of liquid from the first exhaust channel 17 into the second exhaust channel 18.

[0111] The bottom of the first venting groove 17 is not higher than the bottom of the water receiving platform 15. The reason for this design is that after the droplets left from the breathable membrane enter the water receiving platform 15, they can be quickly discharged through the first venting groove 17, avoiding liquid accumulation in the water receiving platform 15 and reducing the risk of liquid splashing on the breathable membrane.

[0112] like Figure 7 , 8 The side of the annular guide block 26 is provided with a guide surface 23 with a gradually increasing outer diameter. The guide surface 23 extends toward the annular base 20. The bottom end of the upper collar 9 protrudes inward to form an annular protrusion 22. The inner side of the annular base 20 extends inward to form a groove 21. The bottom end of the upper collar 9 is engaged with the annular base 20 through the groove 21.

[0113] Here, the connection between the upper collar 9 and the annular base 20 involves two levels of reinforcement. First, the guide surface 23 on the side of the annular guide block 26 is interference-fitted with the bottom of the upper collar 9, making the connection between the upper collar 9 and the annular base 20 more secure. Second, an annular protrusion 22 is provided at the bottom of the upper collar 9, and a groove 21 is formed at the connection between the annular base 20 and the guide surface 23. The annular protrusion 22 is inserted into the groove 21, forming a second layer of reinforcement.

[0114] Of course, in actual use, depending on the situation, only one reinforcement can be set. The guide surface 23 and the bottom end of the upper collar 9 can be made with an interference fit; or, an annular protrusion 22 can be set at the bottom end of the upper collar 9, and the inner side of the annular base 20 can extend inward to form a groove 21. The reinforcement can be achieved by the snap-fit ​​connection between the annular protrusion 22 and the groove 21.

[0115] The connection method between the upper collar 9 and the annular base 20 is not limited to this; technicians can choose flexibly according to their needs.

[0116] Example 2

[0117] like Figure 10 A bottle cap includes a cap body 24, a cap body connecting ring disposed at the bottom end of the cap body 24, and the aforementioned pressure relief and venting assembly, wherein the cap body connecting ring is connected to the connecting ring 12 of the pressure relief and venting assembly.

[0118] Example 3

[0119] like Figure 11 A liquid storage container includes a container body 25 and the aforementioned bottle cap, the bottle cap being disposed on the container body 25.

[0120] Work process:

[0121] When the liquid in the storage container is transported or stored, it may be splashed into the second vent 18 due to external force. However, due to the obstruction of the support seat 16, the liquid cannot splash further into the space enclosed by the annular baffle 14 and the support seat 16. Therefore, there is no risk of the breathable membrane being covered by the liquid, which avoids liquid overflow and protects the breathable membrane.

[0122] After the liquid in the storage container vaporizes, the gas enters the first exhaust channel 17 through the second exhaust channel 18 and the transition channel 19, and then enters the space enclosed by the annular baffle 14 and the support seat 16, and is discharged into the atmosphere through the breathable membrane, thus achieving the exhaust effect.

[0123] When the gas on the breathable membrane condenses, the condensed liquid drops into the water receiving platform 15, and then return to the liquid storage container through the first exhaust channel 17, the transition channel 19, and the second exhaust channel 18.

[0124] The liquid storage container in this application has excellent pressure relief and venting effects, avoiding bottle cap deformation or cracking; at the same time, it also prevents liquid from splashing into the breathable membrane and liquid from overflowing, extending the service life of the breathable membrane, and has broad application value.

[0125] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pressure relief and exhaust assembly, characterized in that, Includes the upper collar and the lower collar. The upper collar includes an exhaust ring, a support frame is provided inside the exhaust ring, a breathable membrane is installed on the support frame, and an annular block is provided around the support frame; The bottom end of the lower sleeve is provided with an annular base, and an annular guide block is provided on the annular base. The annular guide block is located at one end of the annular base near the center. A hollow support is connected to the inner side of the annular guide block. The bottom end of the support is located on the lower sleeve, and the annular stop is located on the support. The support base has a plurality of first exhaust grooves on its side; the annular base has a plurality of second exhaust grooves on its side. The openings of the first exhaust grooves and the second exhaust grooves extend toward the annular guide block. The first exhaust grooves and the second exhaust grooves are spaced apart. A channel connecting the first exhaust grooves and the second exhaust grooves is provided between the lower sleeve or the upper sleeve and the lower sleeve. The bottom end of the upper collar is secured to the annular base by an annular guide block.

2. The pressure relief and exhaust assembly according to claim 1, characterized in that, A gap is left between the top of the annular guide block and the upper sleeve ring, and the gap forms a channel connecting the first exhaust groove and the second exhaust groove. The first exhaust groove is opened on the top side of the support base.

3. The pressure relief and venting assembly according to claim 1 or 2, characterized in that, A transition channel is provided between the first exhaust slot and the adjacent left and / or right second exhaust slot. The transition channel is located on the annular guide block and is a channel connecting the first exhaust slot with the adjacent left and / or right second exhaust slot.

4. The pressure relief and venting assembly according to claim 3, characterized in that, The transition channel has a stepped, landslide, or sloping structure.

5. The pressure relief and venting assembly according to claim 3, characterized in that, The top of the lower sleeve is provided with a water receiving platform at the corresponding position of the breathable membrane, and the support base surrounds the outside of the water receiving platform.

6. The pressure relief and venting assembly according to claim 5, characterized in that, The water receiving platform has a planar structure.

7. The pressure relief and venting assembly according to claim 5, characterized in that, The water receiving platform has a raised structure.

8. The pressure relief and venting assembly according to claim 5, characterized in that, The bottom of the first venting channel is not higher than the bottom of the water receiving platform.

9. The pressure relief and venting assembly according to claim 1, characterized in that, The annular guide block has a guide surface on its side, and the guide surface extends to the annular base.

10. The pressure relief and venting assembly according to claim 9, characterized in that, The outer diameter of the guide surface gradually increases in the direction close to the annular base.

11. The pressure relief and venting assembly according to claim 9, characterized in that, The guide surface is interference-fitted with the bottom end of the upper collar.

12. The pressure relief and venting assembly according to any one of claims 1-2 and 4-11, characterized in that, The bottom end of the upper collar protrudes inward to form a ring-shaped protrusion, and the inner side of the annular base extends inward to form a groove. The bottom end of the upper collar is engaged with the annular base through the groove.

13. The pressure relief and venting assembly according to claim 3, characterized in that, The bottom end of the upper collar protrudes inward to form a ring-shaped protrusion, and the inner side of the annular base extends inward to form a groove. The bottom end of the upper collar is engaged with the annular base through the groove.

14. The pressure relief and venting assembly according to claim 1, characterized in that, A connecting ring is provided at the top of the exhaust ring.

15. The pressure relief and venting assembly according to claim 1, characterized in that, The bottom of the first exhaust groove is higher than the annular base.

16. A bottle cap, comprising a cap body having vent holes, characterized in that, It also includes the pressure relief and venting assembly according to any one of claims 1-15, wherein the venting ring of the pressure relief and venting assembly is connected in communication with the vent hole of the cover.

17. The bottle cap according to claim 16, characterized in that, The bottom of the cover is provided with a cover connecting ring, the top of the exhaust ring is provided with a connecting ring, and the connecting ring of the pressure relief and exhaust assembly is connected to the cover connecting ring.

18. A liquid storage container, comprising a container body, wherein a vent is provided on the container body, characterized in that, The container body is provided with a pressure relief and venting assembly as described in any one of claims 1-15, wherein the venting ring of the pressure relief and venting assembly is connected in communication with the venting hole of the container body.

19. A liquid storage container, comprising a container body, characterized in that, It also includes the bottle cap as described in claim 16 or 17, the bottle cap being disposed on the container body.

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