Flow control cover and packaging container

Abstract

The present invention discloses a flow control cover and a packaging container. The flow control cover includes a first cover, a second cover and a slow flow assembly. The first cover is used to cooperate with the bottleneck of the container body. The first cover is provided with a liquid outlet and a first liquid outlet channel connected to the liquid outlet. The second cover can seal the liquid outlet. The slow flow assembly is provided in the first cover. The first cover can fix the slow flow assembly. The slow flow assembly has a first surface and a second surface relative to each other. The first surface faces the first cover and a slow flow groove is provided on the first surface. The slow flow assembly is provided with a second liquid outlet channel. The second liquid outlet channel passes through the first surface and the second surface and is connected to the slow flow groove and the first liquid outlet channel. The above-mentioned flow control cover can achieve the situation that products with different viscosities will not spray when used, and has a simple structure, is easy to industrialize and produce, and has controllable costs.

Description

Technical Field

[0001] The present invention relates to the technical field of seasoning, food and fast-moving consumer goods, and in particular to a flow-control cover and a packaging container. Background Art

[0002] In the fields of seasoning, food and fast-moving consumer goods, the packaging of the container body is involved. The packaging of the container body is achieved through the cooperation between the container body and the cover body. The through-hole cover commonly seen in existing food packaging often causes liquid to rush out of the through-hole of the bottle cap at the moment of pouring, or even spray out to the outside of the container, resulting in a poor user experience. In response to the above problems, two methods are generally adopted in traditional technology. One is to set a spiral hollow channel. The spiral hollow channel can achieve a certain degree of slow flow effect when matching liquids with higher viscosity, achieving a certain amount of control, but when matching liquids with lower viscosity, it will still spray out to the outside of the container. The other is to set a valve (such as a silicone sheet / buffer sheet) to improve the problem of liquid spraying out through the flow port on the bottle cap in the related technology, but the valve needs to be prepared with special materials (such as silicone and other elastomers), which has a high cost. Summary of the Invention

[0003] In view of the high cost of improving the conventional technology, which often causes liquids to rush out of the through-hole of the bottle cap, especially when used with liquids with low viscosity, it is necessary to provide a flow control cover. The flow control cover of the present invention can prevent the problem of spraying when using products with low viscosity, and has a simple structure, easy industrial production, and controllable cost.

[0004] At least one embodiment of the present invention provides a flow control cover.

[0005] A flow control cover body includes a first cover body, a second cover body and a slow flow component, the first cover body is used to cooperate with the bottleneck of the container body, the first cover body is provided with a liquid outlet and a first liquid outlet channel connected to the liquid outlet, the second cover body can seal the liquid outlet, the slow flow component is arranged in the first cover body, the first cover body can fix the slow flow component, the slow flow component has a first surface and a second surface relative to each other, the first surface faces the first cover body and a slow flow groove is provided on the first surface, the slow flow component is provided with a second liquid outlet channel, the second liquid outlet channel passes through the first surface and the second surface and is connected to the slow flow groove and the first liquid outlet channel.

[0006] In some embodiments, the number of the slow flow troughs is two or more, the number of the second liquid outlet channels is two or more, multiple slow flow troughs and multiple second liquid outlet channels are arranged in a one-to-one correspondence, and one end of multiple second liquid outlet channels is connected to the first liquid outlet channel.

[0007] In some embodiments, the plurality of slow-flow grooves are radially distributed starting from the center of the first surface.

[0008] In some embodiments, the plurality of slow-flow grooves are connected at the center of the first surface.

[0009] In some embodiments, the bottom surface of the slow flow trough is a sloped structure.

[0010] In some embodiments, a flow control baffle is provided on the inner wall of the second liquid outlet channel.

[0011] In some embodiments, there are multiple flow control baffles, and the multiple flow control baffles are spaced apart and distributed on the inner wall of the second liquid outlet channel.

[0012] In some embodiments, the flow control baffle is elastic.

[0013] In some embodiments, the periphery of the flow slowing component has a protruding limiting edge, and the limiting edge is used to overlap and fit with the first cover.

[0014] In some embodiments, a buffer liquid outlet bin is connected to the first cover body, the buffer liquid outlet bin protrudes from the surface of the first cover body, and the liquid outlet is provided on the buffer liquid outlet bin.

[0015] In some embodiments, a limiting cap is connected to the second cover body, the liquid outlet on the buffer liquid outlet bin has an outward turning edge, and the limiting cap can be embedded and matched with the buffer liquid outlet bin. When the second cover body is covered on the first cover body, the outward turning edge can abut against the inner wall of the limiting cap, and the limiting cap is embedded and sealed with the buffer liquid outlet bin.

[0016] In some embodiments, the flow control cover further comprises at least one of the following features:

[0017] The first cover has an internal thread, and the first cover is detachably connected to the bottleneck of the container body via the internal thread;

[0018] The first cover has anti-slip grooves;

[0019] The second cover body is provided with a hand-pushing portion;

[0020] The second cover is movably connected to the first cover.

[0021] In some embodiments, the flow control cover further includes a sealing member disposed between the first cover and the bottleneck of the container body to seal the first cover and the bottleneck of the container body.

[0022] At least one embodiment of the present invention provides a packaging container.

[0023] A packaging container includes a container body and a flow control cover, wherein the first cover of the flow control cover is connected to the container body, the slow flow component is arranged between the first cover and the container mouth of the container body, and the second cover can close or open the liquid outlet on the first cover.

[0024] The aforementioned flow control cover can prevent liquid from spraying out during use of products with low viscosity, and has a simple structure, is easy to industrialize, and has controllable costs. The aforementioned flow control cover prevents liquid from directly spraying out during use of the product by providing a slow-flow groove, allowing for controllable usage, achieving a squeeze-and-drip effect, and providing a good user experience.

[0025] Compared with conventional technologies, the flow control cover and packaging container of the present invention have the following beneficial effects:

[0026] (1) By setting up a slow flow groove, the liquid is prevented from being directly sprayed out during the use of the product.

[0027] (2) By using one or more second liquid outlet channels and providing a flow control baffle in the second liquid outlet channel, the liquid can flow slowly through the gap between the inner wall of the second liquid outlet channel and the flow control baffle into the first liquid outlet channel, thereby avoiding liquid spraying;

[0028] (3) A plurality of flow control baffles are provided in the second liquid outlet channel to further reduce the liquid flow rate and facilitate the user to control the amount of liquid. The flow control baffles have a certain elasticity and play a flow blocking role when not squeezed. When squeezed, they deform to allow the water to flow smoothly.

[0029] (4) The present invention can be adapted to liquids of different viscosities by setting different gaps between the flow control baffles and different numbers of flow control baffles according to actual needs;

[0030] (5) A buffer liquid outlet tank is provided on the first cover body, and the buffer liquid outlet tank can further reduce the liquid flow rate;

[0031] (6) The present invention has a simple structure and is easy to mass produce;

[0032] (7) An outer flange is provided at the liquid outlet, which can effectively cut off the liquid and avoid liquid residue;

[0033] (8) The liquid outlet is set to a central type, which reduces the requirements for the use angle during use and is also conducive to reducing the requirements for the positioning mechanism during automated assembly.

[0034] (9) By providing a sealing member, the bottleneck of the first cover and the container body is sealed, thereby improving the sealing performance between the first cover and the container body and avoiding liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0036] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0037] Figure 1 This is a schematic diagram of a flow control cover according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of a slow-flow assembly of a flow-control cover according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the cooperation between the flow control cover and the container body according to one embodiment of the present invention;

[0040] Figure 4 A schematic diagram of a flow-slowing component of a flow-control cover according to another embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of a flow control cover according to another embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the cooperation between the flow control cover and the container body according to another embodiment of the present invention.

[0043] Description of Reference Numerals

[0044] 10. Flow control cover; 100. First cover; 101. Liquid outlet; 102. First liquid outlet channel; 103. Buffer liquid outlet bin; 104. Outer flange; 200. Second cover; 201. Limiting cap; 202. Hand-push portion; 203. Connecting piece; 300. Flow control assembly; 301. Second liquid outlet channel; 302. Flow control baffle; 303. Flow control groove; 304. Limiting edge; 305. Positioning column; 20. Packaging container; 21. Container body. DETAILED DESCRIPTION

[0045] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the term "center" is based on the orientation or positional relationship shown in the accompanying drawings and is intended solely to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of the technical features referred to. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. In the present invention, unless otherwise specified or defined, the terms "mounted," "connected," "connected," "fixed," etc. should be understood broadly. For example, they can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specifically defined.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] The present invention provides a flow control cover 10 to solve the problem of high cost in conventional technologies that liquid, especially when used with liquids of low viscosity, easily flows out of the through hole of the bottle cap. The flow control cover 10 will be described below with reference to the accompanying drawings.

[0049] The flow control cover 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 The flow control cover 10 of the present invention can be used for packaging fluids in the fields of seasoning, food and fast-moving consumer goods.

[0050] In order to more clearly illustrate the structure of the flow control cover 10 , the flow control cover 10 will be introduced below with reference to the accompanying drawings.

[0051] For example, see Figure 1 As shown, Figure 1 A schematic diagram of the structure of the flow control cover 10 provided in the embodiment of the present application. Figure 1 As shown, it includes a first cover body 100 , a second cover body 200 and a flow slowing component 300 .

[0052] The first cover 100 is used to cooperate with the bottleneck of the container body 21 . The first cover 100 is provided with a liquid outlet 101 and a first liquid outlet channel 102 communicating with the liquid outlet 101 .

[0053] The second cover 200 can seal the liquid outlet 101. The second cover 200 can be connected to the first cover 100 and can move relative to the first cover 100. In addition, the second cover 200 can also be separated from the first cover 100.

[0054] See also Figure 2 As shown, the slow flow assembly 300 is disposed in the first cover 100, and the first cover 100 can fix the slow flow assembly 300, see Figure 3 As shown, Figure 3 It is a schematic diagram of the cooperation between the flow control cover 10 and the container body 21. Through the cooperation between the first cover 100 and the container body 21, the first cover 100 can fix the slow flow component 300. The slow flow component 300 is flat. The slow flow component 300 has a first surface and a second surface relative to each other, the first surface faces the first cover 100, and the second surface is used to face the inner cavity of the container body 21. A slow flow groove 303 is provided on the first surface. The slow flow component 300 has a second liquid outlet channel 301. The second liquid outlet channel 301 runs through the first surface and the second surface. One end of the slow flow groove 303 is connected to the second liquid outlet channel 301 and the other end is connected to the first liquid outlet channel 102.

[0055] The flow control cover 10 can prevent the spraying of products with low viscosity during use, and has a simple structure, is easy to industrialize, and has controllable costs. The flow control cover 10 is provided with a slow flow groove 303 to slow down the flow rate of the liquid during use, preventing direct spraying, and making the amount of liquid controlled, achieving a squeezeable and dripping effect, providing a good user experience.

[0056] In some embodiments, there are two or more slow-flow grooves 303 and two or more second liquid outlet channels 301. Multiple slow-flow grooves 303 are provided in a one-to-one correspondence with multiple second liquid outlet channels 301, and one end of each of the multiple second liquid outlet channels 301 is connected to the first liquid outlet channel 102. Providing multiple second liquid outlet channels 301 helps to reduce the impact force of the liquid and provide better buffering. When one of the second liquid outlet channels 301 is blocked, liquid can be discharged through other second liquid outlet channels 301.

[0057] It should be noted that, in a preferred embodiment, when the number of slow flow grooves 303 is two or more, the number of second liquid outlet channels 301 can be shared by one, so as to save processing steps.

[0058] In some embodiments, a flow control baffle 302 is provided on the bottom surface of the slow flow groove 303 .

[0059] In some embodiments, the plurality of slow-flow grooves 303 are radially distributed starting from the center of the first surface.

[0060] In some embodiments, a plurality of slow-flow grooves 303 are connected at the center of the first surface.

[0061] In some embodiments, there are multiple flow control baffles 302 , and the multiple flow control baffles 302 are distributed at intervals on the inner wall of the second liquid outlet channel 301 .

[0062] In some embodiments, when the slow flow component 300 is placed in a horizontal state, that is, when the first surface of the slow flow component 300 is facing upward and the second surface is facing downward, the bottom surface of the slow flow trough 303 is a sloped structure, and the specific shape of the slope structure is that the bottom surface of the slow flow trough 303 gradually sinks from the first surface to the second surface.

[0063] In some embodiments, the periphery of the flow-slowing component 300 has a protruding limiting edge 304. The limiting edge 304 is used to overlap and fit with the first cover 100. Figure 3 or Figure 6 As shown, the maximum radial dimension (such as diameter) of the periphery of the slow-flow component 300 can be equal to the maximum inner diameter of the first cover body 100, so that the slow-flow component 300 can be overlapped in the first cover body 100, and then the slow-flow component 300 can be locked by cooperating with the first cover body 100 and the bottleneck.

[0064] In some embodiments, a buffer liquid outlet bin 103 is connected to the first cover 100. The buffer liquid outlet bin 103 protrudes from the surface of the first cover 100 and is provided with a liquid outlet 101. The buffer liquid outlet bin 103 can be an inverted cone-shaped structure and is used to collect liquid flowing out of the slow flow groove 303.

[0065] In some of these examples, see Figure 4 As shown, the number of the slow flow grooves 303 can be multiple, and the multiple slow flow grooves 303 can be communicated with one second liquid outlet channel 301, or can be communicated with one second liquid outlet channel 301 respectively. Figure 4 In the embodiment, three slow flow grooves 303 are connected to the inner cavity of the container body 21 through a second liquid outlet channel 301. When a shared second liquid outlet channel 301 is provided, the second liquid outlet channel 301 is located in the middle of the slow flow component 300, and the three slow flow grooves 303 are distributed outward from the middle of the slow flow component 300. Correspondingly, the buffer liquid outlet bin 103 is located in the middle of the first cover 100 (see FIG. Figure 5 As shown), the entire flow control cover 10 and the container body 21 are matched as shown in FIG. Figure 6 shown.

[0066] In some embodiments, the liquid outlet 101 on the buffer liquid outlet bin 103 has an outer flange 104, and the limiting cap 201 can be embedded and matched with the buffer liquid outlet bin 103. When the second cover 200 is placed on the first cover 100, the outer flange 104 can abut the inner wall of the limiting cap 201, and the limiting cap 201 and the buffer liquid outlet bin 103 are embedded and sealed. During production, the limiting cap 201 and the second cover 200 can be manufactured as a single piece. In this embodiment, the outer flange 104 serves to cut off the liquid.

[0067] In some embodiments, the depth of the limiting cap 201 is equal to the height of the buffer liquid outlet bin 103. Such a setting can ensure that after the second cover body 200 is matched with the first cover body 100, the buffer liquid outlet bin 103 is completely located in the limiting cap 201. The limiting cap 201 can prevent the liquid from the buffer liquid outlet bin 103 from overflowing, thereby facilitating the transportation of the packaging container 20 and the liquid in the packaging container 20.

[0068] In some embodiments, the flow control baffle 302 is elastic.

[0069] In some embodiments, the first cover 100 has an internal thread, and the first cover 100 is detachably connected to the bottleneck of the container body 21 through the internal thread. Figure 3 or Figure 6As shown, the bottleneck of the container body 21 is provided with an external thread, and the flow control cover 10 is threadedly connected to the bottleneck through the first cover 100, which is convenient for processing and manufacturing, packaging, and use by users.

[0070] In some embodiments, the first cover 100 has anti-slip grooves. The anti-slip grooves on the first cover 100 can increase friction, making it easier for the user to twist the first cover 100 to open or close the container body 21.

[0071] In some embodiments, the second cover 200 is provided with a push portion 202. The push portion 202 can facilitate the user's finger to push the second cover 200 to at least partially separate the second cover 200 from the first cover 100 and open the liquid outlet 101.

[0072] In some embodiments, the second cover 200 is movably connected to the first cover 100. Figure 1 or Figure 5 As shown, the second cover 200 is connected to the first cover 100 via a connector 203 . The second cover 200 can be turned over under the action of an external force, and is easy to operate.

[0073] In some embodiments, the connector 203 is a plastic connector 203 . The plastic connector 203 has a certain elasticity and can be bent multiple times to achieve multiple closing or opening between the second cover 200 and the first cover 100 .

[0074] In some of these examples, see Figure 2 and Figure 3 As shown, a positioning column 305 is provided on the first surface of the buffer assembly 300, and the positioning column 305 can be adapted to the inner wall of the buffer liquid outlet bin 103 on the first cover 100. Figure 2 As shown, the positioning post 305 may be a curved structure adapted to the inner wall of the buffer liquid outlet chamber 103 . The positioning post 305 is used for mechanical positioning to avoid dislocation during assembly.

[0075] In some embodiments, the flow control cover 10 further includes a sealing member, which is disposed between the first cover 100 and the bottleneck of the container body 21 to seal the first cover 100 and the bottleneck of the container body 21. The sealing member can be a sealing ring.

[0076] At least one embodiment of the present invention provides a packaging container 20 .

[0077] A packaging container 20, see Figure 3 or Figure 6As shown, the container comprises a container body 21 and a flow control cover 10. The first cover 100 of the flow control cover 10 is connected to the container body 21. The slow flow assembly 300 is disposed between the first cover 100 and the container opening of the container body 21. The second cover 200 can close or open the liquid outlet 101 on the first cover 100.

[0078] In some embodiments, the container body 21 may be elastic. The setting of the elastic container body 21 is convenient for the user to squeeze to assist in squeezing out the liquid with high viscosity in the container body 21. When the viscosity of the liquid in the container body 21 is high, such as detergent, hand soap, hand washing gel, etc., it is difficult to discharge the liquid when it has a large viscosity. At this time, the user can squeeze the container body 21 to assist the liquid in the container body 21 to discharge.

[0079] In some embodiments, the container body 21 may be a container capable of holding liquids, such as a bottle, bag, or box. For example, the container body 21 may be a plastic bottle. Plastic bottles are elastic, making it easy for a user to squeeze the container body 21 to facilitate the flow of liquid from the container body 21.

[0080] In some embodiments, the container body 21 and the flow control cover 10 may be made of plastic.

[0081] In some embodiments, the shape of the container body 21 can be set according to actual needs. For example, the container body 21 can be a cylindrical, rectangular or other structure.

[0082] Compared with conventional technologies, the flow control cover 10 and packaging container 20 of the present invention have the following beneficial effects:

[0083] (1) The slow-flow groove 303 is provided to prevent the liquid from being directly ejected during the use of the product.

[0084] (2) By using one or more second liquid outlet channels 301 and providing a flow control baffle 302 in the second liquid outlet channel 301, the liquid can flow slowly through the gap between the inner wall of the second liquid outlet channel 301 and the flow control baffle 302 into the first liquid outlet channel 102, thereby avoiding liquid spraying;

[0085] (3) A plurality of flow control baffles 302 are provided in the second liquid outlet channel 301 to further reduce the liquid flow rate and facilitate user control of the liquid dosage. The flow control baffles 302 have a certain elasticity and act as flow barriers when not squeezed. When squeezed, they deform to allow the water to flow smoothly.

[0086] (4) The present invention can be adapted to liquids of different viscosities by setting different gaps between the flow control baffles 302 and different numbers of flow control baffles 302 according to actual needs;

[0087] (5) A buffer liquid outlet bin 103 is provided on the first cover 100, and the buffer liquid outlet bin 103 can further reduce the liquid flow rate;

[0088] (6) The present invention has a simple structure and is easy to mass produce;

[0089] (7) An outer flange 104 is provided at the liquid outlet 101, and the outer flange 104 can effectively cut off the liquid and prevent liquid residue;

[0090] (8) The liquid outlet 101 is set to a central type, which reduces the requirements for the use angle during use and is also conducive to reducing the requirements for the positioning mechanism during automated assembly.

[0091] (9) By providing a sealing member, the bottleneck of the first cover 100 and the container body 21 is sealed, thereby improving the sealing performance between the first cover 100 and the container body 21 and preventing liquid leakage.

[0092] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0093] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A flow control cover, characterized in that: The invention comprises a first cover body, a second cover body and a slow flow component, wherein the first cover body is used to cooperate with the bottleneck of the container body, the first cover body is provided with a liquid outlet and a first liquid outlet channel connected to the liquid outlet, the first cover body is connected with a buffer liquid outlet bin, the buffer liquid outlet bin protrudes from the surface of the first cover body, the buffer liquid outlet bin is provided with the liquid outlet, the second cover body can seal the liquid outlet, the slow flow component is provided in the first cover body, the first cover body can fix the slow flow component, the slow flow component has a first surface and a second surface relative to each other, the first surface faces the first cover body and a slow flow groove is provided on the first surface, the slow flow component is provided with a second liquid outlet channel, the second liquid outlet channel Passing through the first surface and the second surface and communicating with the slow flow groove and the first liquid outlet channel, a plurality of spaced flow control baffles are provided on the inner wall of the second liquid outlet channel, the flow control baffles are elastic, and the flow control baffles play a flow blocking role when not squeezed, and deform when squeezed to enable smooth passage of water; the number of the slow flow grooves is two or more, and the number of the second liquid outlet channels is two or more, and the plurality of slow flow grooves are arranged in a one-to-one correspondence with the plurality of second liquid outlet channels, one end of the plurality of second liquid outlet channels is communicated with the first liquid outlet channel, and the plurality of slow flow grooves are radially distributed with the center of the first surface as the starting point, and the plurality of slow flow grooves are connected at the center of the first surface.

2. The flow control cover according to claim 1, characterized in that: The bottom surface of the slow flow trough is in a sloped structure.

3. The flow control cover according to any one of claims 1 to 2, characterized in that: The periphery of the flow-slowing component has a protruding limiting edge, and the limiting edge is used to overlap and fit with the first cover body.

4. The flow control cover according to any one of claims 1 to 2, characterized in that: A limiting cap is connected to the second cover body, and the liquid outlet on the buffer liquid outlet bin has an outward turning edge. The limiting cap can be embedded and matched with the buffer liquid outlet bin. When the second cover body is covered on the first cover body, the outward turning edge can abut against the inner wall of the limiting cap. The limiting cap is embedded and sealed with the buffer liquid outlet bin.

5. The flow control cover according to any one of claims 1 to 2, characterized in that: The flow control cover further comprises at least one of the following features: The first cover has an internal thread, and the first cover is detachably connected to the bottleneck of the container body via the internal thread; The first cover has anti-slip grooves; The second cover body is provided with a hand-pushing portion; The second cover is movably connected to the first cover.

6. The flow control cover according to any one of claims 1-2, characterized in that: The flow control cover further includes a sealing member, which is disposed between the first cover and the bottleneck of the container body to seal the first cover and the bottleneck of the container body.

7. A packaging container, characterized in that: It comprises a container body and a flow control cover according to any one of claims 1 to 6, wherein the first cover of the flow control cover is connected to the container body, the slow flow component is arranged between the first cover and the container mouth of the container body, and the second cover can close or open the liquid outlet on the first cover.

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