Cup cover

Abstract

The utility model discloses a cup cover which comprises a cover body and a cover piece, a first-stage buffering bin is arranged in the center of the cover plane of the cover body, a pressure relief hole communicated with the cup body is formed in the bottom of the buffering bin, a gas-liquid separation unit communicated with the buffering bin is arranged on the periphery of the buffering bin, and a last-stage buffering bin is arranged at the tail end of the gas-liquid separation unit. And an exhaust hole communicated with the final-stage surge bin is formed in the position, corresponding to the final-stage surge bin, of the cover plate. The gas-liquid separation unit comprises a gas channel on the inner side and a multi-stage liquid channel communicated with the gas channel on the outer side, the bottom surface of the liquid channel is higher than that of the gas channel, and the final-stage surge bin is arranged at the tail end of the gas channel; the liquid channel is of a water-drop-shaped structure with a partition grid in the middle, the top end of the water-drop-shaped structure is communicated with the gas channel, and the bottom arc channel faces the top and is communicated with the gas channel in a tangent mode. According to the structure, gas-liquid separation is achieved while the pressure in the cup body is reduced, liquid is prevented from splashing along with airflow to cause smudginess, and safety, cleanliness and user experience are improved.

Description

Technical Field

[0001] This utility model relates to a device for preventing splashing, and more particularly to a cup lid with a splash-proof function. Background Technology

[0002] Hot beverages such as milk tea and coffee, after being placed in paper cups or other containers, need to be sealed with matching heat-resistant plastic lids. Currently, most hot beverage lids on the market are one-piece pre-drilled vents to prevent the lid from bursting due to hot steam. However, during the process of carrying and drinking, the pressure inside the cup increases as the hot beverage is shaken, easily causing liquid splashing and posing a high risk of burns. Furthermore, the vented structure allows dust and bacteria to easily enter, creating hygiene hazards. Patent document CN210493629U discloses a hot beverage lid with a first and second recess on the lid body to provide two-stage isolation for splashed liquid. However, once the liquid enters the second recess, it cannot flow back into the cup, and during use, the gas-liquid mixture cannot be separated. The liquid overflows from the joint between the lid body and the lid flap along with the gas, causing the lid surface to become dirty and affecting the consumer experience. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to further improve the anti-splash effect of the cup lid, enhance the user experience, and provide a cup lid with anti-splash function.

[0004] Technical solution: The cup lid of this utility model includes a lid body, which includes a lid side body screwed onto the cup body. A limiting ring is fixed to the inner wall of the lid side body. The bottom of the limiting ring is fixed to a lid plane, and the top of the limiting ring is provided with a circular lid top surface. A primary buffer chamber is provided at the center of the lid plane. A pressure relief hole communicating with the cup body is provided at the bottom of the primary buffer chamber. A gas-liquid separation unit communicating with the primary buffer chamber is provided around the primary buffer chamber. A final buffer chamber is provided at the end of the gas-liquid separation unit. A lid plate that assembles with the lid plane to form a sealed space is also provided above the lid plane. An exhaust hole communicating with the final buffer chamber is provided on the lid plate at a position corresponding to the final buffer chamber.

[0005] Furthermore, the gas-liquid separation unit includes an inner circular gas channel and multiple outer liquid channels that communicate with the gas channel. The bottom surface of the liquid channel is higher than the bottom surface of the gas channel, and the final buffer chamber is located at the end of the gas channel. The liquid channel is a teardrop-shaped structure with a dividing grid in the middle. The top of the teardrop-shaped structure is connected to the gas channel, and the arc-shaped channel at the bottom of the teardrop-shaped structure is tangentially connected to the gas channel. The liquid channel is radially offset from the gas channel. Because the liquid has a larger mass, it is easier for the gas-liquid mixture to enter the liquid channel outside the dividing grid, achieving gas-liquid separation and preventing liquid from splashing out of the cover with the airflow and causing dirt. The arc-shaped channel at the end of the liquid channel is tangentially connected to the gas channel. The fluid in the liquid channel and the fluid in the gas channel are in opposite directions, buffering the hot liquid impact step by step to further prevent hot liquid from splashing out of the cover and causing dirt. The bottom surface of the liquid channel is higher than the bottom surface of the gas channel. When the gas pressure disappears, the cup body is under negative pressure. The liquid in the liquid channel will flow back to the gas channel and then back to the first-level buffer chamber, and then back to the cup body through the pressure relief hole.

[0006] Furthermore, the liquid channel is configured with 3 to 10 levels, which can buffer the hot liquid splash while improving the gas-liquid separation effect.

[0007] Furthermore, the end of the liquid channel teardrop-shaped structure is provided with a liquid storage tank for storing liquid. When a pressurized gas-liquid mixture inside the cup impacts outward, the hot liquid separated by the liquid channel is temporarily stored in the liquid storage tank, increasing the temporary storage capacity of the separated liquid and preventing too much liquid from being impacted by the airflow and flowing to the final buffer chamber, and then being flushed out of the cup lid from the exhaust hole.

[0008] Furthermore, the bottom of the primary buffer chamber is provided with a downward-facing groove, and the pressure relief hole is located on the bottom surface of the groove. The bottom surface of the groove and the bottom of the primary buffer chamber form a step, further preventing the liquid inside the cup from impacting the pressure relief hole and flowing out, thus preventing hot liquid from spraying out.

[0009] Furthermore, the inner wall of the primary buffer chamber is spaced with 3 to 5 strip-shaped protrusions to prevent liquid from impacting the airflow. This increases the resistance to the upward flow of the gas-liquid mixture, especially the resistance to the liquid, reducing the impact of liquid on the gas-liquid separation unit.

[0010] Furthermore, a drinking spout is provided on the top surface of the lid. The lid includes a flat surface with a folded surface on its side edge. A stopper matching the drinking spout is provided on the folded surface to prevent liquid from spilling out of the cup. The lid is rotated and fixed to a limiting ring. The stopper matches the groove of the drinking spout to seal the spout and prevent liquid from spilling from the cup. When opening the lid to drink, lift the stopper to detach it from the drinking spout, push the folded surface to rotate the lid, and then expose the drinking spout for use.

[0011] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. By setting a three-stage buffer assembly, the pressure inside the cup is gradually reduced while gas-liquid separation is achieved, preventing liquid from splashing and causing dirt, thus improving safety, cleanliness and user experience; 2. The bottom of the first-stage buffer chamber is provided with grooves and protrusions, and the high-pressure gas-liquid mixture is intercepted after entering the first-stage buffer chamber, further improving the anti-splashing effect; 3. The design of the liquid channel being higher than the gas channel and the liquid storage tank being provided at the end of the arc of the liquid channel can return the sprayed liquid to the cup body, preventing splashing while improving the cleanliness of the cup lid. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the cover plate of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the present invention when the drinking spout is opened;

[0015] Figure 4 This is a schematic diagram of the three-stage buffer assembly structure on the cover plane of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0017] Figure 6 These are schematic diagrams of the third and fourth embodiments of this utility model. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0019] Example 1

[0020] like Figure 1 The cup lid shown includes a lid body 1 and a lid plate 2. The lid body 1 includes a lid side body 16 that is screwed onto the cup body. A limiting ring 18 is fixed to the inner wall of the lid side body 16. The bottom of the limiting ring 18 is fixed to a lid plane 10, and the top of the limiting ring 18 is provided with a circular lid top surface 12. A drinking spout 17 is provided on the lid top surface 12. Figure 2 As shown, the lid 2 includes a flat surface 22, and the side edge of the flat surface 22 is provided with a folded surface 23. A stopper 24 matching the drinking spout 17 is provided on the folded surface 23 to prevent liquid from overflowing from the cup. The lid 2 is rotatably fixed to the limiting ring 18. Figure 3 As shown, before opening the lid to drink, the stopper 24 matches the groove 171 of the drinking spout 17 to seal the drinking spout 17 and prevent liquid from spilling from the cup; when opening the lid to drink, lift the stopper 24 to detach it from the drinking spout 17, push the folding surface 23 to rotate the lid 2 to expose the drinking spout 17 for use.

[0021] like Figure 4 and 5 As shown, a primary buffer chamber 13 is provided at the center of the cover plane 10. A pressure relief hole 15 communicating with the cup body is provided at the bottom of the primary buffer chamber 13. A gas-liquid separation unit 14 communicating with the primary buffer chamber 13 is provided around the primary buffer chamber 13. A final buffer chamber 11 is provided at the end of the gas-liquid separation unit 14. The gas-liquid separation unit 14 includes an inner circular gas channel 141 and multiple outer liquid channels 142 communicating with the gas channel 141. The final buffer chamber 11 is located at the end of the gas channel 141. 142 is a teardrop-shaped structure with a dividing grid 143 in the middle. The top of the teardrop-shaped structure is connected to the gas channel 141, and the arc channel at the bottom of the teardrop-shaped structure is tangentially connected to the gas channel 141. The liquid channel 142 is set with 8 stages, or 3 to 10 stages can be set according to the requirements of gas-liquid separation effect. The cover plate 2 is set above the cover plane 10 and is assembled with the cover plane 10 to form a closed space. The cover plate 2 is provided with an exhaust hole 21 connected to the final buffer chamber 11 at the position corresponding to the final buffer chamber 11. The liquid channel 142 is radially outward compared to the gas channel 141. Due to the greater mass of the liquid, the gas-liquid mixture is more likely to enter the liquid channel 142 outside the partition 143, achieving gas-liquid separation and preventing liquid from splashing out of the cover and causing dirt. The arc-shaped channel at the end of the liquid channel 142 is tangentially connected to the gas channel 141 and faces upward. The fluid in the liquid channel 142 is in the opposite direction to the fluid in the gas channel 141, which buffers the impact of hot liquid step by step to further prevent hot liquid from splashing out of the cover and causing dirt. The bottom surface of the liquid channel 142 is higher than the bottom surface of the gas channel 141. When the gas pressure disappears, the liquid in the liquid channel 142 will flow back to the gas channel 141 due to the negative pressure in the cup cavity, and then flow back to the first-level buffer chamber 13, and then flow back into the cup body through the pressure relief hole 15.

[0022] Example 2

[0023] Unlike Embodiment 1, the bottom of the primary buffer chamber 13 has a downward-facing groove 131 with a pressure relief hole 15 located on the bottom surface of the groove 131. The bottom surface of the groove 131 forms a step with the bottom of the primary buffer chamber 13, further preventing liquid inside the cup from impacting the pressure relief hole 15 and preventing hot liquid from spraying out of the cup lid.

[0024] Example 3

[0025] Unlike Embodiment 2, the inner wall of the primary buffer chamber 13 is provided with five strip-shaped protrusions 132. The strip-shaped protrusions 132 can be set in 3 to 5 according to the requirements of the liquid blocking effect. The strip-shaped protrusions 132 increase the resistance to the upward flow of the gas-liquid mixture, especially the resistance to the liquid, reduce the impact of the liquid on the gas-liquid separation unit with the airflow, and further prevent hot liquid from spraying out of the cup lid.

[0026] Example 4

[0027] Unlike embodiment 3, the end of the teardrop-shaped structure of the liquid channel 142 is provided with a liquid storage tank 144 for storing liquid. When a pressurized gas-liquid mixture in the cup impacts outward, the hot liquid separated by the liquid channel 142 is temporarily stored in the liquid storage tank 144, increasing the temporary storage capacity of the separated liquid and preventing too much liquid from being impacted by the airflow and flowing to the final buffer chamber 11, and then being flushed out of the cup lid from the exhaust port 21.

Claims

1. A cup cover, comprising a cover body (1), the cover body (1) comprising a cover side body (16) screwed with a cup body, an inner wall of the cover side body (16) fixedly provided with a limiting ring (18), a bottom of the limiting ring (18) fixedly provided with a cover plane (10), and a top of the limiting ring (18) provided with a circular cover top plane (12); characterized in that, The center of the cover plane (10) is provided with a first buffer bin (13), the bottom of the first buffer bin (13) is provided with a pressure relief hole (15) communicated with the cup body, the periphery of the first buffer bin (13) is provided with a gas-liquid separation unit (14) communicated with the first buffer bin (13), and the tail end of the gas-liquid separation unit (14) is provided with a last buffer bin (11); the upper side of the cover plane (10) is further provided with a cover sheet (2) matched with the cover plane (10) to form a sealed space, and the cover sheet (2) is provided with an exhaust hole (21) communicated with the last buffer bin (11) at a position corresponding to the last buffer bin (11).

2. The cup lid of claim 1, wherein The gas-liquid separation unit (14) comprises an inner circular gas passage (141) and an outer multi-stage liquid passage (142) penetrating through the gas passage (141), the bottom surface of the liquid passage (142) is higher than the bottom surface of the gas passage (141), and the last buffer bin (11) is arranged at the tail end of the gas passage (141); the liquid passage (142) is in a water drop type structure with a partition grid (143) arranged in the middle, the top end of the water drop type structure is communicated with the gas passage (141), and the circular arc passage at the bottom of the water drop type structure is tangentially communicated with the gas passage (141) towards the top.

3. The cup lid of claim 2, wherein, The liquid passage (142) is provided with 3-10 stages.

4. The cup lid of claim 2, wherein, The tail end of the water drop type structure of the liquid passage (142) is provided with a liquid storage groove (144) for storing liquid.

5. The cup lid of claim 1, wherein, The bottom of the first buffer bin (13) is downwardly provided with a groove (131), and the pressure relief hole (15) is arranged on the bottom surface of the groove (131).

6. The cup lid of claim 5, wherein, The inner wall of the first buffer bin (13) is provided with 3-5 strip-shaped bosses (132) at intervals for preventing liquid from being impacted by airflow.

7. The cup lid of claim 1, wherein The cover top surface (12) is provided with a drinking opening (17), and the cover sheet (2) comprises a sheet plane (22), the side edge of the sheet plane (22) is provided with a folded surface (23), and the folded surface (23) is provided with a plug buckle (24) matched with the drinking opening (17) to prevent liquid in the cup from overflowing.

8. The cup lid of claim 6, wherein, The cover sheet (2) is rotationally fixed with the limiting ring (18).

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