A method of preventing spillage of a container and a spillage preventing container

Abstract

The application discloses a kind of container anti-overflow method and anti-overflow container, container includes the liquid outlet for being arranged in upper end, for when inverting container, prevent liquid in container from directly flowing out from liquid outlet, after container is inverted, first intercept liquid flowing to liquid outlet, make liquid flow to the process in liquid outlet, gradually fill the space in the rear end container of liquid outlet, air in container is discharged from liquid outlet, and prevent external air from entering container from liquid outlet, so that liquid meets P 容器外气体 -P 容器内气体 ≥P 容器内液体 Before reaching liquid outlet, realize the non-automatic overflow of liquid, and using liquid itself tension, independent cavity, narrow liquid passage, can realize the control to liquid flow, under the premise of sufficient liquid, the flow rate and flow amount of liquid depend on the degree of squeezing container by user;Under the condition that flow rate and flow amount are controlled, user can use appropriate amount of liquid in different scenarios, fully exert the role of liquid itself.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging devices, more particularly, to a container anti-overflow method and anti-overflow container. BACKGROUND

[0002] The existing liquid packaging containers generally adopt the pouring or inverting mode to make the liquid flow out, but such liquid packaging containers will automatically flow out the liquid once they are poured or inverted, whether in the use state or the storage state. In the use state, the container will automatically overflow the liquid once it is poured or inverted, and the liquid flow process cannot be controlled, which not only wastes the liquid itself, but also brings inconvenience to the user. Therefore, the prior art designs a spiral liquid flow channel, which can delay the flow of the liquid when the container is poured or inverted, but such flow channel still cannot solve the problem of automatic overflow of the liquid, and the liquid will still flow out of the container after the container is poured or inverted.

[0003] The control of the liquid flow is particularly important for daily necessities, especially for plastic packaging containers that store low-viscosity liquids, such as liquid detergents, personal care products, and liquid flavorings. Since the container liquid is prone to automatic overflow, the user often experiences liquid overflow before the container liquid outlet is aligned with the target object, which not only wastes the liquid, but also easily leads to improper liquid usage. For target objects that require controlled liquid usage, even if the container liquid outlet is aligned with the target, the liquid flow amount is difficult for the user to effectively control when the liquid-containing container is poured or inverted due to the liquid gravity and instantaneous impact force. Combined with the automatic overflow condition, the liquid is prone to overflow in large quantities after the container is poured or inverted, i.e., the liquid flow amount cannot be controlled during use, and excessive or insufficient liquid usage will significantly affect the use effect of the liquid, making it impossible to achieve the best use effect of the liquid. Therefore, it is crucial to control the liquid flow process. In addition, in the storage state, such daily necessities are generally placed in a location that is easily accessible to the user and is also prone to being knocked over or poured. In the state where the user does not seal it, the container will spill on the ground once it is knocked over, which not only wastes the liquid, but also may cause a dangerous accident due to the lubricity of the liquid itself. SUMMARY

[0004] The present application aims to overcome at least one of the above-mentioned defects of the prior art, and provides a container anti-overflow method and anti-overflow container, which avoids the automatic flow of the liquid when the liquid container is poured or inverted, controls the flow of the liquid and the usage amount of the liquid, facilitates the best use effect of the liquid, and improves the usage rate of the liquid in the container.

[0005] The technical scheme adopted by the present application is a method for preventing overflow of a container, the container comprising a liquid outlet arranged at an upper end, for preventing liquid in the container from flowing out directly from the liquid outlet when the container is inverted, and for intercepting the liquid flowing to the liquid outlet after the container is inverted, gradually filling the space in the container at the rear end of the liquid outlet during the process of the liquid flowing to the liquid outlet, discharging part of the air in the container from the liquid outlet, and preventing external air from entering the container from the liquid outlet, so that the liquid satisfies P 容器外气体 -P 容器内气体 ≥P 容器内液体 When the container is inverted, the liquid in the container will gather towards the liquid outlet due to gravity, and in order to achieve non-overflow of the liquid, the condition that the atmospheric pressure outside the container is greater than or equal to the sum of the atmospheric pressure in the container and the pressure of the liquid in the container needs to be met before the liquid reaches the liquid outlet, so that part of the air in the container is discharged under the premise of avoiding liquid outflow, thereby meeting P 容器外气体 -P 容器内气体 ≥P 容器内液体 , i.e. the atmospheric pressure outside the container is greater than or equal to the sum of the atmospheric pressure in the container and the pressure of the liquid in the container.

[0006] When part of the air in the container is discharged, there will be a tendency for external air to flow into the container under the action of external air pressure, so the entry of external air needs to be prevented by using the filling of the liquid itself, the pressure of the liquid, the tension of the liquid, and the structure of the container, which helps to fully discharge part of the air in the container and achieve the internal and external pressure conditions for non-overflow of the liquid. When the user needs to let the liquid flow out, the state of P 容器外气体 -P 容器内气体 ≥P 容器内液体 can be destroyed by squeezing the container, so that the liquid flows out of the liquid outlet; preferably, the volume of the part of the air is determined according to the volume of the container itself and the maximum liquid volume in the container; when all the pre-discharged part of the air in the container is discharged, P 容器外气体 -P 容器内气体 =P 容器内液体 is met, and the inflow of external air needs to be completely avoided; when all the pre-discharged part of the air in the container is discharged, P 容器外气体 -P 容器内气体 >P 容器内液体 is met, and the inflow of external air can not be completely avoided, but the maximum value of the inflow of external air should be such that after the inflow of external air, the container still satisfies P 容器外气体 -P 容器内气体 ≥P 容器内液体 before the liquid reaches the liquid outlet.

[0007] Generally, a container satisfies P 容器外气体 -P 容器内气体 ≥P 容器内液体The state of the art can also prevent liquid from overflowing, but it is through the initial discharge of part of the liquid that the internal and external pressure state of the anti-overflow container of the present application is achieved, i.e. it cannot completely prevent automatic overflow. The present application is to achieve P 容器外气体 -P 容器内气体 ≥P 容器内液体 The internal and external pressure state before the container is inverted, the liquid flowing to the liquid outlet is first intercepted to avoid the initial liquid flow, and at the same time, the liquid is filled and the liquid tension is discharged from the container during the liquid flow to the liquid outlet, which achieves complete anti-automatic overflow. Since the liquid in the container flows downward to fill continuously when inverted, gas cannot enter. At this time, the liquid continuously flows to the liquid outlet, and the container continuously retains and buffers the liquid flowing to the liquid outlet, continuously discharges part of the gas in the container to the outside, and finally reaches the internal and external pressure balance state of P 容器外气体 -P 容器内气体 ≥P 容器内液体 , thereby avoiding the initial liquid flow and achieving complete anti-automatic overflow.

[0008] During use by the user, the container will be from a small inclination to a large inclination or even completely inverted. The present application first discharges air during the change of different inclinations, so that the internal and external air pressure of the container before the liquid reaches the liquid outlet satisfies P 容器外气体 -P 容器内气体 >P 容器内液体 , i.e. the liquid does not automatically overflow. Based on the premise that the liquid does not automatically overflow, the liquid can flow out by squeezing the container after the liquid outlet of the container is aligned with the target object, avoiding waste of the liquid and improving the use rate of the liquid in the container. More importantly, the way the liquid flows out by squeezing the container can achieve relatively accurate control of the liquid flow, and under the premise of sufficient liquid, the flow rate and flow amount of the liquid depend on the degree of squeezing of the container by the user. In the use state where the flow rate and flow amount are controlled, the user can use the appropriate amount of liquid for different use scenarios, fully utilize the role of the liquid, and achieve the best effect of the liquid.

[0009] Preferably, a flow buffering cavity is provided at the liquid outlet, the flow buffering cavity is a relatively independent cavity, the partial air in the container is air pre-stored in the flow buffering cavity when the container is upright, and the liquid enters the flow buffering cavity after the container is inverted or poured. The liquid gradually fills the flow buffering cavity while gradually discharging the air originally in the flow buffering cavity. The discharged air is all or part of the air in the flow buffering cavity, as long as the internal and external pressure state of the container before the liquid reaches the liquid outlet after the air is discharged is P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

[0010] The slow flow cavity is provided with a liquid inlet for liquid to enter the slow flow cavity. Preferably, the liquid inlet is a small hole provided at the bottom of the slow flow cavity, which avoids too much liquid from rushing into the slow flow cavity at the same time when the container is inverted, so that part of the air in the original slow flow cavity rushes into the cavity outside the slow flow cavity from the liquid inlet.

[0011] The slow flow cavity is provided with a labyrinth flow channel. After the container is inverted, the liquid entering the slow flow cavity flows along the labyrinth flow channel to the liquid outlet, and at the same time, the part of the air in the container gradually flows out of the labyrinth flow channel. The labyrinth flow channel is composed of a plurality of separated small cavities and communication channels between the small cavities. After the container is inverted, the liquid enters and starts to fill the current small cavity, and then enters the next small cavity through the communication channel. The liquid continuously enters and starts to fill the small cavities which have not been filled with liquid, until it reaches the small cavity at the liquid outlet. The liquid flows between the small cavities through the communication channels to achieve the labyrinth flow channel. After the container is inverted, the liquid enters the labyrinth flow channel and fills the cavities in sequence while the air in the labyrinth flow channel is discharged. The liquid fills the space in the subsequent flow channel, so that the air in the subsequent flow channel is discharged from the liquid outlet, and the liquid reaches the liquid outlet to meet the condition of P 容器外气体 -P 容器内气体 ≥P 容器内液体 The labyrinth flow channel helps to increase the flow path of the liquid and store a certain volume of liquid, while blocking the external gas from entering the interior. The labyrinth flow channel can also reduce the impact force caused by the inverted container, avoiding the direct impact of part of the liquid on the liquid outlet of the slow flow cavity, which leads to the outflow of the liquid.

[0012] The slow flow cavity is provided with a partition plate, which divides the slow flow cavity into a liquid outlet column and a liquid storage cavity. The cavity or flow channel provided with the liquid outlet or opposite to the liquid outlet is the liquid outlet column, and the cavity in the slow flow cavity except the liquid outlet column is the liquid storage cavity. The liquid outlet column and the liquid storage cavity are communicated. After the container is inverted, the liquid enters the liquid storage cavity in the slow flow cavity, and then enters the liquid outlet column from the liquid storage cavity, while the part of the air in the container is gradually discharged from the liquid outlet column-liquid storage cavity. By simply dividing the slow flow cavity into a liquid outlet column and a liquid storage cavity, the cavity structure of the slow flow cavity is simplified. The liquid enters the liquid storage cavity through the liquid inlet of the slow flow cavity, fills the liquid storage cavity to the communication position between the liquid outlet column and the liquid storage cavity, and then starts to enter the liquid outlet column. During the process of the liquid entering the liquid storage cavity and the liquid outlet column, the liquid continuously discharges the gas in the slow flow cavity by filling itself, so that the liquid meets the condition of P 容器内气体 ≥P 容器内液体 .

[0013] Preferably, the liquid outlet column is a hollow column connected to the liquid outlet, the liquid storage cavity is a cavity in the slow flow cavity except the hollow column, the partition plate is vertically arranged in the slow flow cavity, the channel is arranged between the partition plate and the bottom surface of the slow flow cavity, and the liquid outlet column and the liquid storage cavity are communicated through the channel; after being inverted, the liquid enters the liquid storage cavity, and the liquid accumulates in the liquid storage cavity to be higher than the hollow column, i.e., the liquid outlet column, and then enters the internal flow channel of the liquid outlet column, while gradually discharging the air in the container inside the liquid storage cavity and the liquid outlet column. The hollow column is formed around the liquid outlet by the partition plate or is formed around the liquid outlet together with the inner wall of the slow flow cavity; when the liquid accumulates in the liquid storage cavity to be higher than the hollow column, the liquid enters the internal flow channel of the liquid outlet column through the communication part, and the hollow column separates the slow flow cavity into the internal flow channel of the hollow column and the liquid storage cavity outside the hollow column, thereby avoiding the liquid directly splashing into the liquid outlet column from the liquid storage cavity and ensuring the relative independence of the liquid outlet column and the liquid storage cavity. The liquid outlet column in the shape of a hollow column also helps to reduce the space and caliber occupied by the liquid outlet column, which is conducive to the blocking of the external gas by the self-tension of the liquid, and the self-tension of the liquid can further avoid the self-flow of the liquid at the liquid outlet. Preferably, the hollow column and the liquid storage cavity are communicated through the gap or gap between the hollow column and the bottom surface of the slow flow cavity. Preferably, the liquid outlet is arranged at the center position of the cover body, and the partition plate forms the hollow column around the liquid outlet; or the liquid outlet is arranged at one side of the cover body, and the partition plate forms the hollow column around the liquid outlet and is connected with the inner wall of the slow flow cavity to form the hollow column together.

[0014] The application also provides a spill-proof container, which comprises a liquid outlet arranged at the upper end, a slow flow cavity arranged at the liquid outlet, and a cavity structure of the slow flow cavity. After the container is inverted, the liquid flowing to the liquid outlet is first intercepted, the slow flow cavity is gradually filled during the process of the liquid flowing to the liquid outlet, the air in the slow flow cavity is discharged from the liquid outlet, and the external air is prevented from entering the container. Before the liquid reaches the liquid outlet, P 容器外气体 -P 容器内气体 ≥P 容器内液体 The slow flow cavity helps to independently discharge the air, and the size of the slow flow cavity can be determined on the premise that the volume of the container and the liquid in the container are known, so that the container after discharging the air in the slow flow cavity satisfies P 容器外气体 -P 容器内气体 ≥P 容器内液体 When the container is inverted, the liquid flows to one side of the liquid outlet, and the air in the slow flow cavity is continuously discharged from the liquid outlet by the filling and tension of the liquid. However, the reduction of the internal air pressure will make the external air have a tendency to enter the container, so the self-volume, pressure, tension of the liquid and the container structure are used to prevent the external air from entering during the liquid flowing and filling process. The container structure for preventing the external air from entering includes a small hole for the liquid to flow and pass through.

[0015] When the labyrinth flow channel is arranged in the slow flow cavity, the slow flow cavity is provided with a liquid inlet hole, the labyrinth flow channel is arranged in the slow flow cavity, the labyrinth flow channel comprises a plurality of vertically arranged baffles, a passage is arranged between the baffles and the bottom surface of the slow flow cavity, and the passages are arranged in a staggered manner; the labyrinth flow channel helps to increase the flow path of the liquid and store a certain volume of liquid, while blocking the external gas from entering the inside; the labyrinth flow channel can also reduce the impact force caused by the inverted container, avoid the direct impact of part of the liquid on the liquid outlet of the slow flow cavity, and cause the liquid to flow out. By arranging the vertically arranged baffles and the staggered passages, the labyrinth structure can be simplified, the baffles divide the slow flow cavity into a plurality of small cavities, after being inverted, the liquid enters the small cavity closest to the liquid inlet hole in the slow flow cavity through the liquid inlet hole and fills to be higher than the passage, then enters the next small cavity through the passage and starts to fill, and continuously enters and fills the intermediate small cavities until the liquid reaches the small cavity directly communicated or connected with the liquid outlet; in the flow process, the passages are arranged in a staggered manner in the slow flow cavity, and the liquid flow path is S-shaped; preferably, the passages are arranged in a staggered manner on adjacent baffles, for example, a plurality of vertically arranged plates, the passages are arranged alternately on the left and right of adjacent plates, and the labyrinth flow channel is realized by the staggered arrangement of the passages. When being returned to the normal position after being inverted, the passages are located at the bottom of the slow flow cavity, the liquid flows to the liquid inlet hole of the slow flow cavity through the passages at the bottom, and the liquid is returned to below the slow flow cavity.

[0016] When the liquid outlet column-liquid storage cavity structure is arranged in the slow flow cavity, the slow flow cavity is provided with a liquid inlet hole, a baffle is arranged in the slow flow cavity, the baffle divides the slow flow cavity into a liquid outlet column and a liquid storage cavity, the liquid outlet column is a hollow column formed by the baffle around the liquid outlet, the liquid storage cavity is a cavity in the slow flow cavity except the hollow column, the liquid inlet hole is opposite to the liquid storage cavity, the liquid outlet is connected with or opposite to the liquid outlet column, a passage is arranged between the baffle and the bottom surface of the slow flow cavity, and the liquid outlet column and the liquid storage cavity are communicated through the passage. Compared with the labyrinth flow channel, the structure is simpler and the processing difficulty is reduced. After being inverted, the liquid enters the liquid storage cavity in the slow flow cavity through the liquid inlet hole, the liquid accumulates in the liquid storage cavity to be higher than the passage, then enters the liquid outlet column through the passage, and at the same time, the gas in the slow flow cavity is gradually discharged. The hollow column is formed by the baffle around the liquid outlet or is composed of the baffle around the liquid outlet and the inner wall of the slow flow cavity, the hollow column divides the slow flow cavity into an inner flow channel in the hollow column and the liquid storage cavity, and direct splashing of the liquid from the liquid storage cavity into the liquid outlet column is avoided, so that the relative independence of the liquid outlet column and the liquid storage cavity is ensured. The hollow column of the liquid outlet column also helps to reduce the space and caliber occupied by the liquid outlet column, which is beneficial to the blockage of external gas by the self-tension of the liquid, and the self-tension of the liquid can further avoid the self-flow of the liquid at the liquid outlet. Preferably, the liquid outlet column and the liquid storage cavity are communicated through the gap or gap between the hollow column and the bottom surface of the slow flow cavity. Preferably, the liquid outlet is arranged at the center position of the cover body, and the baffle forms the hollow column around the liquid outlet; or, the liquid outlet is arranged on one side of the cover body, and the baffle surrounds the liquid outlet and is connected with the inner wall of the slow flow cavity to jointly form the hollow column.

[0017] Preferably, the liquid inlet hole is arranged at the bottom of the slow flow cavity. The liquid inlet hole can be arranged on the bottom surface of the slow flow cavity or on the side surface of the bottom of the slow flow cavity. Preferably, the liquid inlet hole is arranged staggered with the liquid outlet, that is, the liquid inlet hole is not directly opposite to the liquid outlet, so as to avoid that the liquid entering the liquid inlet hole directly splashes to the liquid outlet.

[0018] Preferably, the channel is a gap or notch between the partition plate and the bottom surface of the slow flow cavity, and the size of the channel is the same. During the flowing and filling of the liquid in the slow flow cavity, since the external air pressure is greater than the sum of the internal liquid pressure and the internal air pressure, there is a tendency that the external air rushes into the container. However, the gap or notch between the partition plate and the bottom surface of the slow flow cavity is small, and the filling speed of the liquid is greater than the flow speed at the gap, that is, the liquid can fill the small space separated by the partition plate during the flowing of the liquid. At the same time, the liquid itself also has a tension, so that the external air is difficult to enter the container through the channel, and the gas rushing in to balance the internal and external pressure can be avoided during the exhausting process. In addition, the structure is simple and easy to implement, which reduces the processing difficulty and is convenient for production. Similarly, other structures that can help to block the external air from entering the container under the liquid pressure and the liquid tension can also be used as the channel. The use of the same size of the exhaust can ensure that the liquid flow speed between the multiple small cavities remains consistent, which can prevent the liquid from overflowing while avoiding the resistance of the liquid flowing out, so as to achieve a good system balance effect.

[0019] Preferably, the bottom of the slow flow cavity comprises an inclined surface, and the liquid inlet of the slow flow cavity is arranged on the lowest side of the inclined surface. When the liquid inlet of the slow flow cavity is arranged on the lowest side of the inclined surface, it is helpful for the backflow of the liquid when the container is placed upright after being inverted to pour out the liquid, so as to avoid that there is more residue in the slow flow cavity of the container placed upright after use. Preferably, the bottom surface of the slow flow cavity is arranged as an inclined surface.

[0020] Preferably, a sealing structure is arranged on the container to seal the liquid outlet. The sealing structure can be a sealing film, a liquid outlet cover or a liquid outlet plug, so as to meet the needs of product sales, circulation and storage.

[0021] Preferably, a liquid outlet channel is arranged on the container and communicates with the liquid outlet. When the container is inverted, the user squeezes the container, and the liquid reaches the liquid outlet and flows out through the liquid outlet channel. The liquid outlet channel is convenient for aligning the object to be used when the liquid container is used, guides the direction of the liquid flowing out, and also helps to increase the space for the internal air to be exhausted and increase the length of the liquid flow channel, so as to control the self-flow while achieving the slow flow. Under the premise of arranging the liquid outlet channel, the sealing structure is arranged at the outlet of the liquid outlet channel to prevent the liquid in the container from flowing out.

[0022] Preferably, the bottom surface of the slow flow cavity is arranged as an inclined detachable bottom cover.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: After the container is inverted, the liquid flowing towards the outlet is first intercepted, and as the liquid flows towards the outlet, the space inside the container behind the outlet is gradually filled, allowing some air inside the container to be discharged from the outlet and preventing external air from entering the container from the outlet, so that the container achieves P before the liquid reaches the outlet. 容器外气体 -P 容器内气体 ≥P 容器内液体 The internal and external air pressure is controlled to prevent liquid overflow from the container. Due to the relative pressure balance inside and outside the container, the gaps or openings for liquid flow in the slow-flow chamber are relatively small compared to the container, allowing the surface tension of the liquid to be utilized. At this point, squeezing the container to allow liquid to flow out provides precise control over the outflow. Given sufficient liquid, the outflow rate and volume depend on the degree of squeezing by the user. With controlled flow rate and volume, users can use the appropriate amount of liquid for different usage scenarios, fully utilizing the liquid's properties. The slow-flow chamber with a labyrinthine flow channel effectively utilizes the surface tension and pressure of the liquid to achieve sufficient venting and effectively prevents external gas from entering the container through the labyrinthine flow chamber. After the liquid enters the slow-flow chamber, it effectively prevents liquid from splashing onto the outlet, further ensuring that the liquid does not automatically overflow. The labyrinthine flow channel also slows down the liquid flow rate and reduces the impact force caused by inversion, achieving slow and sufficient venting of the liquid flow within the slow-flow chamber. The buffer chamber with a liquid outlet column and a liquid storage chamber uses a simple partition to separate the slow-flow chamber, achieving relatively independent liquid outlet column and liquid storage chamber. Similarly, during the liquid filling of the slow-flow chamber, some gas inside the container is continuously discharged. Its simple structure prevents automatic liquid overflow, simplifying the container's structure and reducing production costs. The bottom of the slow-flow chamber has an inclined surface, with the liquid inlet located on the lowest side of the inclined surface. This allows the liquid to quickly return to the liquid storage chamber after inversion, facilitating subsequent reuse and improving the container's ease of use. Furthermore, preventing automatic liquid overflow when the user does not squeeze the container maintains the hygiene of the container's placement location and avoids the danger caused by lubricating liquid spilling onto the ground. By designing an independent slow-flow chamber and independently discharging a portion of the pre-discharged air, the venting can be achieved within acceptable error limits. 容器外气体 -P 容器内气体 ≥P 容器内液体 The pressure conditions inside and outside the container are monitored, reducing the influence of other factors. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the container in the upright position in Example 1;

[0025] Figure 2 This is a schematic diagram of the container inverted in Example 1;

[0026] Figure 3Fig. 1 is a schematic diagram of the liquid flow path in the container of Example 1 when the container is upright;

[0027] Figure 4 Fig. 2 is a schematic diagram of the liquid flow path in the container of Example 1 when the container is inverted;

[0028] Figure 5 Fig. 3 is a schematic diagram of the longitudinal cross-section of the labyrinthine container of Example 2 when the container is inverted;

[0029] Figure 6 Fig. 4 is a plan view of the cap of the labyrinthine container of Example 2;

[0030] Figure 7 Fig. 5 is a perspective view of the cap of the labyrinthine container of Example 2 without the bottom cover;

[0031] Figure 8 Fig. 6 is a perspective view of the cap of the labyrinthine container of Example 2 with the bottom cover;

[0032] Figure 9 Fig. 7 is a schematic diagram of the liquid flow path in the labyrinthine container of Example 2 when the container is inverted;

[0033] Figure 10 Fig. 8 is a perspective view of the cap of the labyrinthine container of Example 2 when the container is upright;

[0034] Figure 11 Fig. 9 is a schematic diagram of the longitudinal cross-section of the liquid column-liquid storage cavity container of Example 3 when the container is inverted (1);

[0035] Figure 12 Fig. 10 is a perspective view of the cap of the liquid column-liquid storage cavity container of Example 3 without the bottom plate;

[0036] Figure 13 Fig. 11 is a schematic diagram of the longitudinal cross-section of the liquid column-liquid storage cavity container of Example 3 when the container is inverted (2);

[0037] Figure 14 Fig. 12 is a perspective view of the cap of the liquid column-liquid storage cavity container of Example 3 when the container is upright;

[0038] Figure 15 Fig. 13 is a schematic diagram of the longitudinal cross-section of the liquid column-liquid storage cavity container of Example 4 when the container is upright;

[0039] Figure 16 Fig. 14 is a perspective view of the cap of the liquid column-liquid storage cavity container of Example 4 without the bottom plate;

[0040] Figure 17 Fig. 15 is a plan view of the cap of the liquid column-liquid storage cavity container of Example 4 without the bottom plate;

[0041] Figure 18 Fig. 16 is a perspective view of the cap of the liquid column-liquid storage cavity container of Example 4 with the bottom plate;

[0042] Figure 19This is a perspective view of the bottle cap of the liquid outlet-storage chamber type container in Example 4, with the cap facing upwards.

[0043] Figure 20 This is a diagram showing the liquid flow path after the liquid column-storage chamber container of Example 4 is inverted. Detailed Implementation

[0044] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0045] Example 1

[0046] This embodiment discloses a method for preventing container overflow, such as... Figure 1 As shown, container 1 includes a liquid outlet 2 located at the top. When the container is upright, the liquid is located at the bottom of container 1. When the container is inverted, as shown... Figure 2 As shown, the liquid gathers at the outlet 2 side of container 1 and begins to flow towards the outlet. Normally, to maintain internal and external pressure balance, gas will rush into the container as the liquid flows out of the outlet, making overflow prevention impossible. Therefore, to prevent liquid from flowing directly out of outlet 2 when container 1 is inverted, as follows... Figure 3 As shown, before the liquid flows to the outlet, the intercepting structure 3 intercepts the liquid flowing towards the outlet, gradually filling the space inside the container at the rear of the outlet 2 as the liquid flows towards the outlet, while simultaneously expelling some of the air 4 from the container towards the outlet. Figure 4 As shown, after the liquid fills part of the cavity and expels some air, the surface tension of the liquid at the interception position and the filling of the liquid ensure that external air is difficult to enter, so that P is satisfied and maintained before the liquid reaches the outlet 2. 容器外气体 -P 容器内气体 ≥P 容器内液体 The liquid will not flow out of the outlet, thus achieving complete anti-overflow. In use, the user only needs to squeeze the container to disrupt the original balance, thereby causing the liquid to flow out and precisely controlling the amount of liquid dispensed.

[0047] Example 2

[0048] This embodiment discloses a container with a labyrinthine flow channel-shaped slow-flow cavity and an overflow prevention method based on the container, such as... Figure 5 As shown, the container of the labyrinthine flow channel-shaped slow-flow cavity includes a bottle cap 5 and a bottle body 6, wherein the bottle cap 5 and the bottle body 6 fit together at the bottle opening, as shown. Figure 6 , 7As shown, the bottle cap 5 is provided with a liquid outlet 51, and the bottle cap 5 is provided with a flow slowing cavity 52, and the flow slowing cavity 52 is provided with a labyrinth flow channel 53.

[0049] As shown in Figure 7 , 8 , Figure 7 , 8 , the bottle cap structure diagram with or without bottom cover at the same position and the same angle, the bottom of the flow slowing cavity 52 is provided with a bottom cover 54, and the bottom cover 54 is provided with a liquid inlet hole 541; when inverted, the liquid enters the labyrinth flow channel 53 in the flow slowing cavity 52 through the liquid inlet hole 541; the labyrinth flow channel 53 includes a plurality of vertically arranged baffles 531, the baffles 531 and the baffles separate the flow slowing cavity into a plurality of small cavities 532, the connection between the baffles and the bottom cover is provided with a notch 533, the small cavities 532 are communicated through the notches 533, and the notches 533 are staggered on the adjacent baffles; a plurality of small cavities and staggered notches jointly constitute a labyrinth flow channel; wherein the baffles 531 form an interception effect equivalent to the interception structure 3 in embodiment 1.

[0050] The liquid inlet hole 541 and the liquid outlet 51 are arranged on opposite sides, Figure 9 The first row is the longitudinal sectional view of the container, and the second row is the bottle cap liquid flow schematic diagram corresponding to the first row state, as shown in Figure 9 , when inverted, the liquid enters the small cavity directly communicated with the liquid inlet hole through the liquid inlet hole 541, and the liquid continuously fills the current small cavity while discharging the air in the current small cavity through the notch to the liquid outlet, as shown in Figure 9 , when the liquid fills to the height of the notch, the liquid level in the container outside the flow slowing cavity continuously decreases, and the liquid still continuously flows into the flow slowing cavity, prompting the liquid in the current small cavity to enter and begin to fill the adjacent small cavity through the notch, and the liquid continuously enters and fills the small cavity without containing liquid through the notch, while discharging the air in the small cavity, until the liquid enters and fills the small cavity directly communicated with the liquid outlet, and before the liquid reaches the liquid outlet, the pressure inside and outside the container satisfies P 容器外气体 -P 容器内气体 ≥P 容器内液体 ;

[0051] In the above flow process, as shown in the inverted bottle cap liquid flow schematic diagram in Figure 9 , the staggered notches form an S-shaped flow path when the liquid passes through a plurality of small cavities, that is, a labyrinth flow channel is realized. At the same time, the notch 533 is relatively small with respect to the baffle 531 and the flow slowing cavity 52, and when the liquid flows from the current small cavity to the next small cavity after filling the current small cavity, the liquid flow rate through the notch is smaller than the liquid filling speed of the current small cavity, so that the current small cavity is also quickly filled while discharging liquid to the next small cavity, which helps to block the entry of external air.

[0052] In use, the user only needs to squeeze the bottle 6 to break the internal and external pressure P 容器外气体 -P 容器内气体 ≥P 容器内液体 of the container when inverted, and the degree of squeezing applied by the user determines the amount and speed of liquid flow, achieving control of the liquid flow. The cap 5 in this embodiment is provided with a liquid outlet channel 55 on its upper surface that communicates with the liquid outlet when upright, as shown in Figure 10 .

[0053] The bottom plane of the labyrinth flow channel-shaped slow-flow cavity in this embodiment is an inclined plane, and the liquid inlet hole 541 is arranged on the lowest side of the inclined plane when upright. When the inverted container is returned to the upright position, the gap is below the partition, and the liquid in the small cavity continuously flows through the gap to the liquid inlet hole 541, and eventually flows into the container cavity below the slow-flow cavity.

[0054] Embodiment 3

[0055] This embodiment discloses a container provided with a liquid outlet column-reservoir cavity type slow-flow cavity and an anti-overflow method based on the container. The liquid outlet column is arranged at the center, as shown in Figure 11 , the container with a liquid outlet-reservoir type slow-flow cavity includes a cap 7 and a bottle body 8, the bottle mouth of the cap 7 and the bottle body 8 is consistent, the cap 7 is provided with a liquid outlet 71, the liquid outlet 71 is arranged at the center of the cap 7, the cap 7 is provided with a slow-flow cavity 72, and the slow-flow cavity 72 is provided with a liquid outlet column-reservoir cavity structure 73.

[0056] As shown in Figure 12 , the slow-flow cavity 72 is provided with a partition 721, which divides the slow-flow cavity into the liquid outlet column-reservoir cavity structure 73. The flow channel connected with the liquid outlet is the liquid outlet column 731, and the cavity in the slow-flow cavity except the liquid outlet column is the reservoir cavity 732. The liquid outlet column and the reservoir cavity are communicated. The slow-flow cavity bottom plate 74 is provided with a liquid inlet hole 741, which is arranged on the lowest side of the bottom plate when upright, and the liquid inlet hole is arranged staggered with the liquid outlet. The side wall of 731 forms the same interception effect as the interception structure 3 in Embodiment 1.

[0057] After inversion, the liquid enters the reservoir cavity 732 in the slow-flow cavity from the liquid inlet hole 741, and at the same time gradually expels the air in the reservoir cavity 732 to the liquid outlet 71. After the liquid fills the reservoir cavity 732, it enters the liquid outlet column 731 through the communication, and at the same time gradually expels the air in the liquid outlet column 731 to the liquid outlet 71.

[0058] The liquid outlet column 731 in this embodiment is a hollow column formed by the partition 721 around the liquid outlet, and the reservoir cavity is the reservoir cavity 732 between the outer wall of the hollow column and the inner wall of the slow-flow cavity, and the liquid inlet hole is opposite to the reservoir cavity. When upright, as shown inFigure 13 As shown, the hollow cylinder is fixed to the lower surface of the bottle cap, and a gap 722 exists between the lower side of the hollow cylinder and the bottom plate. When inverted, the liquid in the liquid storage cavity accumulates at the gap, and then flows into the liquid outlet column from the gap. Before the liquid reaches the liquid outlet, the pressure inside and outside the container should satisfy P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

[0059] At the same time, the gap 722 is relatively small with respect to the baffle and the slow flow cavity. When the liquid fills the liquid storage cavity 732 and flows to the liquid outlet column 731, the flow rate of the liquid passing through the gap 722 is smaller than the filling speed of the liquid storage cavity. Therefore, the liquid storage cavity 732 is filled quickly while discharging liquid to the liquid outlet column, which helps to prevent the entry of external air.

[0060] In use, the user only needs to squeeze the bottle 8 to break the pressure P 容器外气体 -P 容器内气体 ≥P 容器内液体 inside and outside the container when inverted to flow liquid outward, and the degree of squeezing applied by the user determines the flow amount and flow rate, realizing the control of liquid flow. As shown, Figure 14 As shown, the upper surface of the bottle cap 7 in this embodiment is provided with a liquid outlet channel 75 that is in communication with the liquid outlet when upright.

[0061] When the user returns to the upright position after use, the gap is below the baffle, and the liquid in the hollow cylinder continuously flows to the liquid storage cavity through the gap, and finally flows to the cavity below the slow flow cavity through the liquid inlet hole 741 provided on the bottom plate.

[0062] Embodiment 4

[0063] This embodiment discloses a container provided with a liquid outlet-liquid storage type slow flow cavity and a method for preventing overflow based on the container. The liquid outlet and the liquid outlet column are arranged on one side, as shown, Figure 20 As shown, the container with a liquid outlet column-liquid storage cavity type slow flow cavity includes an anti-overflow cap 9 and a bottle body 10, and the bottle opening of the anti-overflow cap 9 is consistent with the bottle opening of the bottle body 10. As shown, Figure 15 、 18 This embodiment is similar to the structure of Embodiment 3, and also uses a baffle 921 to divide the slow flow cavity 92 into a liquid outlet column-liquid storage cavity structure. The anti-overflow cap is provided with a liquid outlet 91, and the bottom plate 94 of the slow flow cavity is provided with a liquid inlet hole 941. The principle is the same as that of Embodiment 3, and will not be described here. However, the liquid outlet 91 is arranged on one side of the anti-overflow cap 9, and the liquid inlet hole 941 is arranged on the opposite side and is still in direct communication with the liquid storage cavity. As shown, Figure 16 、 17 As shown, the hollow cylinder is connected to the inner wall of the slow flow cavity around the liquid outlet and the baffle 921. The bottom plate 94 of the slow flow cavity is an inclined surface, and the liquid inlet hole 941 is arranged on the lowest side of the bottom plate 94 when upright.Figure 19 As shown, the upper surface of the anti-overflow cover is also provided with a liquid outlet channel 95 communicating with the liquid outlet. The baffle 921 forms the same intercepting effect as the intercepting structure 3 in Embodiment 1.

[0064] In this embodiment, liquid enters the slow flow cavity from the liquid inlet hole 941 and starts to discharge the air in the original slow flow cavity to the liquid outlet 91, as shown in Figure 20 As shown in (a) and (b), after being inverted, the liquid first enters the liquid storage cavity and starts to fill to the height of the hollow cylinder, and then enters the liquid outlet column through the gap between the baffle and the bottom plate, and in this process, the gas is continuously discharged outward.

[0065] Obviously, the above embodiments of the present application are only examples for clearly illustrating the technical solutions of the present application, and are not intended to limit the specific embodiments of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the claims of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method for preventing liquid in a container from flowing out of a liquid outlet provided at an upper end of the container when the container is inverted, the method comprising the step of: The slow flow cavity is provided with a liquid inlet hole at the bottom, and a labyrinth flow channel is arranged in the slow flow cavity, one end of the labyrinth flow channel is communicated with the liquid outlet, and the other end is communicated with the liquid inlet hole and the cavity in the container except the slow flow cavity through the liquid inlet hole; after the container is inverted, the slow flow cavity first intercepts the liquid flowing to the liquid outlet, so that the liquid enters the slow flow cavity from the liquid inlet hole and gradually fills the slow flow cavity and is temporarily stored in the slow flow cavity in the process of flowing along the labyrinth flow channel to the liquid outlet, and the air in the labyrinth flow channel is gradually discharged, and the tension of the liquid at the slow flow cavity and the filling of the liquid prevent external air from entering the container from the liquid outlet, so that the liquid meets P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

2. A method for preventing liquid in a container from flowing out of a liquid outlet provided at an upper end of the container when the container is inverted, the method comprising the step of: The slow flow cavity is arranged in the container and below the liquid outlet, a partition is arranged in the slow flow cavity, the partition divides the slow flow cavity into a liquid outlet column and a liquid storage cavity, the slow flow cavity is provided with a liquid outlet or a flow channel opposite to and communicated with the liquid outlet, and the slow flow cavity is provided with a liquid inlet hole at the bottom, the liquid inlet hole is opposite to the liquid storage cavity and is staggered with the liquid outlet and the liquid outlet column, the liquid storage cavity is communicated with the cavity outside the slow flow cavity in the container through the liquid inlet hole; when the container is inverted, the slow flow cavity first intercepts the liquid flowing to the liquid outlet, so that the liquid enters the liquid storage cavity in the slow flow cavity from the liquid inlet hole, then enters the liquid outlet column from the liquid storage cavity, and finally flows to the liquid outlet from the liquid outlet column, the slow flow cavity is gradually filled, the air in the slow flow cavity is gradually discharged, the tension of the liquid at the slow flow cavity and the filling of the liquid prevent the external air from entering the container from the liquid outlet, and the liquid meets P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

3. A method of preventing spillage from a container according to claim 2, wherein The liquid outlet column is a hollow column connected with the liquid outlet, the liquid storage cavity is a cavity in the slow flow cavity except the hollow column, a gap exists between the hollow column and the bottom of the slow flow cavity, the liquid outlet column and the liquid storage cavity are communicated through the gap, after being inverted, the liquid enters the liquid storage cavity from the liquid inlet hole, the liquid accumulates in the liquid storage cavity to be higher than the liquid outlet column, and then enters the liquid outlet column from the gap, and the air in the liquid storage cavity and the liquid outlet column is gradually discharged.

4. An anti-overflow container, the container comprising a liquid outlet provided at an upper end, characterised in that, The liquid outlet is provided with a slow flow cavity located in the container and below the liquid outlet, the bottom of the slow flow cavity is provided with a liquid inlet hole, a labyrinth flow channel is arranged in the slow flow cavity, one end of the labyrinth flow channel is communicated with the liquid outlet, and the other end is communicated with the liquid inlet hole and the cavity in the container except the slow flow cavity through the liquid inlet hole; after the container is inverted, the slow flow cavity first intercepts the liquid flowing to the liquid outlet, so that the liquid enters the slow flow cavity from the liquid inlet hole and gradually fills the slow flow cavity in the process of flowing to the liquid outlet along the labyrinth flow channel, the air in the slow flow cavity is discharged from the liquid outlet, and the tension of the liquid at the slow flow cavity and the filling of the liquid prevent external air from entering the container from the liquid outlet, and the liquid reaches the liquid outlet before P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

5. A spill resistant container as defined in claim 4, wherein, The labyrinth flow channel comprises a plurality of vertically arranged baffles, and a passage is arranged between the baffles and the bottom surface of the slow flow cavity.

6. A spill resistant container as defined in claim 4, wherein, The bottom of the slow flow cavity comprises an inclined surface, and the liquid inlet hole is arranged on the lowest side of the inclined surface.

7. A spill-resistant container as defined in claim 4, wherein An outlet passage is arranged on the upper surface of the slow flow cavity to communicate the labyrinth flow channel with the liquid outlet.

8. An anti-overflow container, the container comprising a liquid outlet provided at an upper end, characterised in that, The liquid outlet is provided with a slow flow cavity located in the container and below the liquid outlet, a partition is arranged in the slow flow cavity, the partition divides the slow flow cavity into a liquid outlet column and a liquid storage cavity, a flow channel communicating with the liquid outlet is the liquid outlet column, the cavity in the slow flow cavity except the liquid outlet column is the liquid storage cavity, the liquid outlet column and the liquid storage cavity are communicated, the bottom of the slow flow cavity is provided with a liquid inlet hole, the liquid inlet hole is arranged opposite to the liquid storage cavity and staggered with the liquid outlet and the liquid outlet column, the liquid storage cavity is communicated with the cavity in the container except the slow flow cavity through the liquid inlet hole; after the container is inverted, the slow flow cavity first intercepts the liquid flowing to the liquid outlet, so that the liquid enters the liquid storage cavity in the slow flow cavity from the liquid inlet hole, then enters the liquid outlet column from the liquid storage cavity, and finally flows to the liquid outlet from the liquid outlet column, gradually fills the slow flow cavity, discharges the air in the slow flow cavity from the liquid outlet, and prevents the external air from entering the container from the liquid outlet by using the tension of the liquid at the slow flow cavity and the filling of the liquid, and the liquid meets P 容器外气体 -P 容器内气体 ≥P 容器内液体 .

9. A spill resistant container as defined in claim 8, wherein, The liquid outlet column is a hollow column formed by the baffles around the liquid outlet, the liquid storage cavity is a cavity in the slow flow cavity except the hollow column, and a passage is arranged between the baffles and the bottom surface of the slow flow cavity.

10. A spill-resistant container as defined in claim 8, wherein The bottom of the slow flow cavity comprises an inclined surface, and the liquid inlet hole is arranged on the lowest side of the inclined surface.

11. A spill-resistant container as defined in claim 8, wherein An outlet passage is arranged on the upper surface of the slow flow cavity to communicate the liquid outlet column with the liquid outlet.

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