Isolation valve of liquid packaging bag

Abstract

The utility model discloses an isolating valve for a liquid packaging bag, which relates to the technical field of packaging, and adopts the technical scheme that the isolating valve comprises a valve body and a valve core, a valve cavity is formed in the valve body, the valve body comprises a first communication structure which is arranged corresponding to a connecting part, and the first communication structure can be communicated with an external bag body and the valve cavity; the valve element comprises an isolation part which is movably connected with the valve cavity. The second communication structure is arranged on the isolation part; after the isolation part moves in the valve cavity, the second communication structure can be communicated with or isolated from the first communication structure. The isolating valve has the advantages that the isolating valve can play a role in isolating liquid, and the isolating valve is applied to connection and disconnection between a mask liquid containing bag and a mask containing bag. According to the scheme, during communication, the valve element needs to be subjected to combination of rotation and lifting or pressing actions, compared with a single action, the isolation effect of the valve element can be better maintained, and the situation that when the valve element is applied to mask products, mask liquid flows out due to misoperation in the links such as transferring or product placing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to an isolation valve for a liquid packaging bag. Background Art

[0002] Facial masks are popular among consumers for their excellent skin-care benefits. They typically consist of two parts: the mask itself and the mask liquid. Facial masks are typically packaged in two different ways: mixed packaging and separate packaging. Mixed packaging, which emerged earlier, consists of a single compartment within the packaging bag, where the mask and mask liquid are mixed and stored together. Separate packaging, on the other hand, consists of two compartments separated by a barrier structure, with the mask and mask liquid stored separately.

[0003] Mixed-packaging is simpler to use; simply tear open the bag and remove the mask. Separate-packaging, on the other hand, requires breaking down the barrier between the two storage compartments to allow the mask liquid to enter the mask compartment before removing the mask for use. While some mask liquids offer excellent skincare benefits, premature mixing with mask liquids is not recommended, as this can significantly shorten their shelf life and increase the risk of spoilage. These types of mask products must be packaged in separate packaging.

[0004] Existing facial mask packaging often utilizes features such as "dummy seals" and "breakable openings" to facilitate the dispensing and release of the mask and mask liquid. While this structure can generally meet the need for isolating the mask and mask liquid under normal circumstances, its reliability is relatively low. Because these packaging types often utilize flexible bags, the isolation structure can easily break if the liquid storage area is subjected to external pressure or impact, thus compromising the original dispensing effect and directly affecting the quality of the product during use. Utility Model Content

[0005] In view of one of the deficiencies of the prior art, the utility model provides a liquid packaging bag isolation valve to solve the isolation and release problems during liquid subpackaging.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a liquid packaging bag isolation valve, comprising a valve body and a valve core, wherein a valve cavity is defined inside the valve body, and the valve body comprises:

[0007] Connecting parts are provided on both sides of the valve body and can be fixedly connected to the external bag body;

[0008] A first communicating structure is provided corresponding to the connecting portion, the first communicating structure can communicate with the external bag body and the valve cavity, and the first communicating structures on both sides of the valve body are symmetrically provided;

[0009] The valve core comprises:

[0010] an isolation portion, disposed in the valve cavity and movably connected to the valve cavity;

[0011] a second communication structure, provided on the isolation portion;

[0012] When the isolation part moves in the valve cavity, the second communication structure can be connected to or isolated from the first communication structure; the movement of the isolation part includes rotating around its own axis.

[0013] Preferably, the valve body is an elongated structure, the valve cavity is an elongated cavity opened inside the valve body, the length direction of the valve body is the longitudinal direction, and the movement mode of the isolation part further includes sliding along the longitudinal direction;

[0014] When the second communicating structure and the first communicating structure are in an isolated state, the isolation portion may first rotate and then slide to connect the second communicating structure with the first communicating structure.

[0015] Preferably, one longitudinal end of the valve body is an open end, and the other end is a closed end, and the open end of the valve body is connected to the internal valve cavity;

[0016] The two connecting parts are respectively located on two longitudinal sides of the valve body;

[0017] The isolation portion of the valve core can be inserted into the valve cavity through the open end of the valve body;

[0018] A guide structure is provided at the connection between the valve core and the valve body, which can guide the movement direction of the isolation part.

[0019] Preferably, the first communication structure of the valve body includes:

[0020] The first through hole is a through hole formed on the wall of the valve cavity, and the axis of the first through hole is not parallel to the axis of the valve cavity;

[0021] The second communication structure includes:

[0022] The second through hole is a through hole opened in the isolation portion.

[0023] Preferably, the first communication structure on each side of the valve body includes a plurality of first through holes, and the first through holes of the same first communication structure are evenly distributed along a longitudinal linear array;

[0024] The second through hole of the second communication structure is arranged corresponding to the first through hole.

[0025] Preferably, a gap is left between the first through holes of the same first connecting structure, and when in an isolated state, the second through hole of the second connecting structure is located on one side of the gap between the first through holes.

[0026] Preferably, the first through holes of the first communication structures on both sides have the same inner diameter and are coaxial;

[0027] When in the isolated state, the axis of the second through hole and the axis of the first through hole are arranged in a non-planar and perpendicular manner;

[0028] When in a communicating state, the second through hole and the first through hole are coaxial.

[0029] Preferably, the axis of the first through hole is perpendicular to the axis of the valve body.

[0030] Preferably, the guide structure includes:

[0031] a first guide groove, which is formed at the open end of the valve body and is a circular arc groove;

[0032] a second guide groove, which is formed in the valve cavity and is located at an open end of the valve cavity facing the valve body, and is a straight groove formed along the longitudinal direction of the valve body;

[0033] The end of the second guide groove is connected to the first guide groove;

[0034] The guide block is arranged at the end of the isolation portion; the guide block can be slidably connected to the first guide groove and the second guide groove respectively.

[0035] Preferably, it also includes:

[0036] The limiting structure can limit the longitudinal movement distance of the valve core; the limiting structure includes:

[0037] A valve core stopper is provided on the valve core and is disposed near the open end of the valve body;

[0038] The valve body limiting member is arranged on the valve body and corresponds to the valve core limiting member; when the valve core slides longitudinally, the valve core limiting member and the valve body limiting member are offset against each other.

[0039] Compared with existing technologies, this solution offers the following advantages: The isolation valve of this solution can isolate liquids and is used to block the connection between a facial mask liquid storage bag and another facial mask storage bag. This solution requires the valve core to undergo a combination of rotation and lifting or pressing to maintain isolation compared to a single action, thus preventing the leakage of facial mask liquid due to misoperation during transportation or product placement during facial mask application.

[0040] This solution also provides a guide structure for guiding the movement of the valve core, which is more convenient for users to use and less likely to cause user error operations.

[0041] In addition, this solution also provides a limiting structure. By introducing the limiting structure, the operation of the valve core can be limited to ensure that the valve core and the valve body form an optimal liquid passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of this application Figure 1 ;

[0043] Figure 2 This is a schematic diagram of the overall structure of the first embodiment of this application Figure 2 ;

[0044] Figure 3 for Figure 2 A partial enlarged view of;

[0045] Figure 4 This is a schematic diagram of the internal structure of the first embodiment of the present application;

[0046] Figure 5 for Figure 4 A partial enlarged view of;

[0047] Figure 6 This is a schematic diagram of the valve core structure of the first embodiment of the present application;

[0048] Figure 7 This is a schematic diagram of the overall structure of the second embodiment of the present application;

[0049] Figure 8 for Figure 7 A partial enlarged view of;

[0050] Figure 9 This is a schematic diagram of the internal structure of the second embodiment of the present application.

[0051] In the picture:

[0052] 1. Valve body; 11. Connecting portion; 12. First communication structure; 121. First through hole; 13. First guide groove; 14. Second guide groove; 15. Valve body stopper; 16. Grip structure;

[0053] 2. Valve core; 21. Isolation part; 22. Second communication structure; 221. Second through hole; 23. Guide block; 24. Valve core limiter; 25. Operating part; 26. Positioning block. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] See also Figures 1-9 , this application provides the following technical solutions:

[0056] A liquid packaging bag isolation valve comprises a valve body 1 and a valve core 2. A valve cavity is provided inside the valve body 1. The valve core 2 is connected to the valve body 1 through the valve cavity. By adjusting the valve core 2, the on-off state of the valve body 1 can be changed.

[0057] The valve body 1 of this embodiment is provided with connecting portions 11 on both sides, which are fixedly connected to the external bag through the connecting portions 11. When the valve body 1 is in use, the connecting portions 11 connect the two external bags, namely the facial mask storage bag and the facial mask liquid storage bag. The openings of the two bags are respectively connected to the connecting portions 11 of the valve body 1, and the valve body 1 is used to prevent the facial mask liquid in the facial mask liquid storage bag from entering the facial mask storage bag.

[0058] Corresponding to the connection portion 11 on each side, the valve body 1 is provided with a first communication structure 12, which is used to connect the external bag body and the valve cavity. The connection portions 11 and the first communication structures 12 on both sides of the valve body 1 are arranged in a symmetrical structure.

[0059] The valve core 2 includes an isolation portion 21 and a second communication structure 22. Figure 4 As shown, the isolation portion 21 is inserted into the valve cavity and is movably connected thereto. A second communication structure 22 is provided on the isolation portion 21. The second communication structure 22 is sufficient to connect the first communication structures 12 on both sides of the valve body 1 after the valve core 2 changes its posture. In other words, when the isolation portion 21 moves within the valve cavity, the second communication structure 22 can be connected to or isolated from the first communication structure 12. Here, the isolation portion 21 changes the working state of the valve body 1 by a rotational motion, that is, the isolation portion 21 rotates about its own axis.

[0060] It should be noted that because the isolation valve of this solution is applied to facial mask packaging bags, its function is to ensure the isolation and blocking of the contents of the bags on both sides before the product is used. Therefore, the initial working state of this isolation valve is the isolation state. Unlike conventional valve body structures, this isolation valve actually only needs to work once when in use, that is, to change the packaging of the facial mask product from the isolation state to the connection state. It does not need to be changed back to the isolation state again. Therefore, the actual working process of the valve core 2 is to use the isolation state as the initial state, and rotate the valve core 2, that is, the isolation part 21 of the valve core 2 to make the first connection structure 12 and the second connection structure 22 on both sides of the valve body 1 form a passage for liquid to flow through, and the work can be completed.

[0061] Based on the above-mentioned embodiments, this solution provides a specific valve body 1 structure. The valve body 1 is an elongated strip-shaped structure, and the valve cavity is an elongated, hollow cavity defined within the valve body 1. The valve body 1 as a whole is approximately cylindrical, and the valve cavity is also a cylindrical cavity. The specific structure of the connecting portion 11 is not limited, as long as the connecting portion 11 is easily connected to the corresponding facial mask storage bag and facial mask liquid storage bag.

[0062] For ease of explanation, the length direction of the valve body 1 will be taken as "longitudinal" for further explanation. The isolation part 21 is a cylinder corresponding to the valve cavity as a whole. The length of the isolation part 21 is smaller than the length of the valve cavity. In addition to the aforementioned rotation, the movement mode of the isolation part 21 in this solution also includes sliding in the longitudinal direction within the valve cavity. As mentioned above, the initial state of the isolation valve is an isolation state, that is, the second connecting structure 22 and the first connecting structure 12 are not connected. When changing the isolation valve to a connected state, it is necessary to first rotate the isolation part 21 by a certain angle, and then slide longitudinally, so that the second connecting structure 22 and the first connecting structure 12 form a passage for the facial mask liquid.

[0063] For the specific actions of the isolation unit 21, this solution provides two specific implementation methods. The first implementation method is: Figures 1 to 6 As shown, the valve core 2 is first rotated 90 degrees, and then pulled toward the outside of the valve body 1 to achieve the communication between the first communication structure 12 and the second communication structure 22. Figures 7 to 9 As shown, the valve core 2 is also rotated 90° first. Different from the first embodiment, the valve core 2 is then pressed toward the inside of the valve body 1 to achieve communication between the first communication structure 12 and the second communication structure 22.

[0064] Regarding the specific structural forms of the first connecting structure 12 and the second connecting structure 22, a variety of different solutions can be adopted. For example, the first connecting structure 12 can be directly opened as a long through groove, a through hole, etc. The second connecting structure 22 is a liquid passage opened on the isolation portion 21 of the valve core 2, and the specific form is not limited. This solution only needs to ensure that the liquid passage on the second connecting structure 22 is still staggered with the first connecting structure 12 after rotation. The advantage of adopting this method is that it strengthens the overall isolation effect of the isolation valve. Even if the valve core 2 rotates during the transportation or placement of goods, the isolation of the bags on both sides can still be maintained.

[0065] Based on the above-mentioned embodiment, one longitudinal end of the valve body 1 is an open end, and the other end is a closed end, and the open end is connected to the internal valve cavity. The isolation portion 21 of the valve core 2 can be inserted into the valve cavity through the open end of the valve body 1. A guide structure is provided at the connection between the valve core 2 and the valve body 1 to guide the movement direction of the isolation portion 21. The valve core 2 of this solution includes a combined movement form of rotation and sliding. Considering the user's convenience and facilitating the user's understanding of the use of the isolation valve, the guide structure not only plays a fool-proof effect in operation, but also allows the user to intuitively understand how to operate the isolation valve.

[0066] Based on the above implementation scheme, the two connecting parts 11 are respectively located on both longitudinal sides of the valve body 1; the connecting part 11 is a wing plate structure and extends to the side away from the valve body 1. The connecting part 11 is provided at two locations on each side of the valve body 1, located at both longitudinal ends of the valve body 1, and the first connecting structure 12 is located between the connecting parts 11 on the same side, forming an inwardly concave structure relative to the connecting part 11.

[0067] The connecting part 11 can adopt a thickness gradient structure with a thicker end close to the valve body 1 and a thinner end away from the valve body 1. This structure can make the connecting part 11 easier to insert into the bag opening position to which it is connected, and then the connecting part 11 and the bag opening position are fixed by hot melting, bonding, etc.

[0068] In addition, the connecting portion 11 may also adopt a clamping structure with a slit in the middle. This connection structure allows the bag opening of the outer bag to be inserted into the slit of the connecting portion 11 for fixation. For further optimization of this form, a through hole connected to the slit can be opened on the connecting portion 11, and a bump or a block is provided on the bag body corresponding to the through hole. Taking the block as an example, when the bag body and the connecting portion 11 are combined, as the bag opening is inserted into the slit, the block is stuck in the through hole of the connecting portion 11. A heated rod is inserted into the through hole to heat-seal the block, thereby improving the tightness of the connection between the bag body and the connecting portion 11.

[0069] The implementation forms of the above two connecting parts 11 of this solution are not limited. In actual production, it is only necessary to ensure that the connecting part 11 is connected to the bag body and does not cause liquid leakage. The specific method is not limited.

[0070] On the basis of the above embodiments, regardless of embodiment 1 or embodiment 2, the first connecting structure 12 and the second connecting structure 22 may adopt the same structure.

[0071] This solution provides a specific implementation of the first connecting structure 12 and the second connecting structure 22. Figure 4 and Figure 9 The first connecting structure 12 includes a first through hole 121. The first through hole 121 is a through hole formed in the wall of the valve cavity. The axis of the first through hole 121 is not parallel to the axis of the valve cavity. The extended axis of the first through hole 121 can intersect the axis of the valve cavity at any angle. For example, the axes of the first through holes 121 on both sides may be in a "V" shape, an "eight" shape, or other shapes, as long as they can connect the valve cavity.

[0072] The second communication structure 22 includes a second through hole 221 formed on the isolation portion 21. The second through hole 221 passes through the isolation portion 21. The shape of the second through hole 221 is not limited, as long as it can communicate with the first through holes 121 on both sides after the valve core 2 is released from the isolation state.

[0073] Based on the above embodiment, the first communication structure 12 on each side of the valve body 1 includes a plurality of first through holes 121. The first through holes 121 belonging to the same first communication structure 12 are evenly distributed along a longitudinal linear array. The second through holes 221 of the second communication structure 22 are arranged corresponding to the first through holes 121. A gap is left between the first through holes 121 of the same first communication structure 12. When in an isolated state, the second through holes 221 of the second communication structure 22 are located to one side of the gap between the first through holes 121.

[0074] In order to ensure the sealing effect, this solution adopts a multi-through-hole structure. Compared with opening a larger through-slot structure, the multi-through-hole structure can make the valve core 2 and the valve body 1 have better strength, and the isolation effect is also better.

[0075] Based on the above implementation scheme, the first implementation scheme is used as an example for explanation. Figure 4 In this embodiment, the first through holes 121 of the first connecting structures 12 on both sides have equal inner diameters and are coaxial. When in an isolated state, the axis of the second through hole 221 and the axis of the first through hole 121 are arranged in a non-planar and perpendicular manner. That is, the two are not on the same plane, but when the plane on which one axis lies is used as the projection plane of the other axis, the axis is perpendicular to the projection of the other axis. When in a connected state, the second through hole 221 and the first through hole 121 are coaxial. Figure 4 The figure shows the isolated state, where the first through hole 121 and the second through hole 221 are both straight holes. In this state, the axes of the first through holes 121 on both sides are collinear, and the second through hole 221 corresponding to the first through hole 121 is located below the through range of the first through hole 121. By rotating the isolation part 21 90°, the axis of the second through hole 221 becomes parallel to the first through hole 121. Then Figure 4 The isolation portion 21 is pulled upward in the direction, and the second through hole 221 is connected to the first through hole 121.

[0076] For the second embodiment, the opposite is true. Figure 9 As shown, in the isolated state, the second through hole 221 in the second embodiment is above the penetration range of the first through hole 121. After the isolation part 21 is rotated, it is pressed down, and the second through hole 221 and the first through hole 121 are connected.

[0077] In this solution, the first through holes 121 on both sides can also be made of non- Figure 4 In the direction of the middle, for example, the first through hole 121 is opened in an oblique direction, in this state, the first communication structures 12 on both sides are no longer arranged in a symmetrical form, but it is preferred to satisfy that the first through holes 121 on both sides are coaxial with each other. Figure 4 and Figure 9 The figure shows that the axis of the first through hole 121 is perpendicular to the axis of the valve body 1, that is, the first through hole 121 is along Figure 4 and Figure 9 Considering the ease of processing and subsequent assembly, the product corresponding to this solution is Figure 4 and Figure 9 The first connecting structure 12 and the arrangement shown in are preferred.

[0078] On the basis of the above-mentioned implementation scheme, this scheme provides a specific structural form of a guide structure. The guide structure includes a first guide groove 13 and a second guide groove 14 opened on the valve body 1. The first guide groove 13 is opened outside the open end of the valve body 1, and the first guide groove 13 is a circular arc groove; the second guide groove 14 is opened on the cavity wall of the valve cavity, and the second guide groove 14 is located at the open end of the valve cavity facing the valve body 1, and the second guide groove 14 is a straight groove body opened along the longitudinal direction of the valve body 1; the end of the second guide groove 14 is connected to the first guide groove 13. Corresponding to the first guide groove 13 and the second guide groove 14, a guide block 23 is correspondingly provided on the isolation part 21, and the guide block 23 is provided at the end of the isolation part 21; the guide block 23 can be slidably connected to the first guide groove 13 and the second guide groove 14 respectively.

[0079] In the isolated state, the guide block 23 is located inside the first guide groove 13 and is located at a position where the first guide groove 13 is away from the connection point of the second guide groove 14. When the isolation portion 21 rotates, the guide block 23 moves within the first guide groove 13 to the second guide groove 14 and can slide along the second guide groove 14.

[0080] On the basis of the above embodiment, in order to facilitate the user to better control the longitudinal movement of the valve core 2, this embodiment further provides a limit structure to limit the longitudinal movement distance of the valve core 2. Figure 5 and Figure 6 The limiting structure includes a valve core limiting member 24, which is arranged on the valve core 2 and is arranged close to the open end of the valve body 1.

[0081] The valve core stopper 24 can be an inclined plate structure mounted on the column of the isolation portion 21. One end is fixedly connected to the isolation portion 21, and the other end is free. The valve core stopper 24 is made of an elastic material. In the isolated state, the valve core stopper 24 is located within the valve cavity, where it is squeezed by the cavity wall, causing its free end to move toward the isolation portion 21. A valve body stopper 15 is mounted on the valve body 1 corresponding to the valve core stopper 24. When the valve core 2 slides longitudinally, the valve core stopper 24 and the valve body stopper 15 abut against each other.

[0082] Regarding the position limiting structure, there are some differences between the aforementioned embodiment 1 and embodiment 2. Figure 4 and Figure 5 In the first embodiment, the width of the valve core limiter 24 is greater than the width of the guide block 23, and the valve body limiter 15 directly adopts the groove wall structure of the first guide groove 13. During the lifting process of the valve core 2, the guide block 23 can enter the second guide groove 14, but because the valve body limiter 15 is wider, it will not enter the second guide groove 14, but will be stuck on the valve body limiter 15, thereby preventing the valve core 2 from being pulled up further. At this time, the second through hole 221 and the first through hole 121 are aligned, and the facial mask liquid can enter the facial mask placement bag. For the first embodiment, the limiting structure is not necessary. Even if the valve core 2 is completely pulled out of the valve body 1 after rotation, it will not have much impact. It is just necessary to manually block the open end of the valve body 1 to prevent the facial mask liquid from flowing out of the open end of the valve body 1 instead of flowing into the facial mask placement bag when squeezing the facial mask liquid.

[0083] See also Figure 8 and Figure 9 For the second embodiment, this solution provides two implementation forms. First, the limit structure can be realized by means of the length difference between the valve cavity and the isolation part 21, that is, Figure 9As shown, in the isolated state, a gap is left between the end of the isolation portion 21 and the closed end of the valve cavity. When the isolation portion 21 is pressed down, the isolation portion 21 abuts against the closed end of the valve cavity and cannot move further. At this time, the second through hole 221 is connected to the first through hole 121. Secondly, a baffle can be provided on the upper portion of the valve core 2 to serve as a valve core limiter 24, and an annular baffle can be provided on the valve body 1 to correspond to the valve core limiter 24 as a valve body limiter 15. When the valve core 2 is pressed down to produce a certain distance of displacement, the valve core limiter 24 abuts against the valve body limiter 15, thereby achieving position limiting.

[0084] On the basis of the above embodiment, the valve core 2 of this embodiment is further provided with an operating portion 25, which is located at the end of the isolation portion 21 and extends to the outside of the valve body 1. The operating portion 25 only needs to be convenient for the user to hold. Corresponding to the operating portion 25, a gripping structure 16 is provided on the valve body 1. The gripping structure 16 only needs to be convenient for the user to hold. Figure 3 As shown, the gripping structure 16 is a boss arranged around the open end of the valve body 1, with both ends of the boss protruding and approximately spindle-shaped. When in use, the user can pinch the gripping structure 16 with one hand and pinch the operating portion 25 with the other hand to apply force to rotate the valve core 2.

[0085] Based on the above implementation plan, see Figure 3 and Figure 8 In this solution, a positioning structure is also provided between the valve core 2 and the valve body 1. The positioning structure is used to maintain the initial state of the valve core 2, that is, the isolation state. The positioning structure includes a positioning block 26 provided on the upper part of the valve core 2, and a corresponding positioning groove provided on the upper part of the valve body 1. In the isolation state, the positioning block 26 is stuck in the positioning groove, and the positioning block 26 and the valve core 2 are connected by an easily breakable structure. When the positioning block 26 and the positioning groove are engaged, the valve core 2 is not easy to rotate. When the user operates, force is applied through the operating part 25 to disconnect the positioning block 26 and the valve core 2, so that the valve core 2 can be rotated. The positioning structure helps to maintain the isolation state of the isolation valve and better ensures the packaging effect of the product.

[0086] Based on the above embodiment, a sealing member is provided on the isolation portion 21 of the valve core 2. This sealing member is sufficient to seal the isolation portion 21 and the inner wall of the valve cavity in the isolated state. Specific forms may include sealing rings and sealing strips. Two sealing rings are provided for each second through hole 221, one on each side of the second through hole 221. A sealing strip is provided along the length of the isolation portion 21 and is attached to the outer side of the isolation portion 21.

[0087] In the description of the present application and its embodiments, it should be noted that, unless there is a conflict, the embodiments created in the present application and the features in the embodiments can be combined with each other.

[0088] In the description of the invention of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention of the present application. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of such features. In the description of the invention of the present application, unless otherwise specified, "multiple" means two or more.

[0089] In the description of the invention of this application, it should be noted that, unless otherwise clearly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the invention of this application can be understood based on specific circumstances.

[0090] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0091] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A liquid packaging bag isolation valve, comprising a valve body and a valve core, wherein a valve cavity is provided inside the valve body, characterized in that: The valve body comprises: Connecting parts are provided on both sides of the valve body and can be fixedly connected to the external bag body; A first communicating structure is provided corresponding to the connecting portion, the first communicating structure can communicate with the external bag body and the valve cavity, and the first communicating structures on both sides of the valve body are symmetrically provided; The valve core comprises: an isolation portion, disposed in the valve cavity and movably connected to the valve cavity; a second communication structure, provided on the isolation portion; When the isolation part moves in the valve cavity, the second communication structure can be connected to or isolated from the first communication structure; the movement of the isolation part includes rotating around its own axis.

2. The liquid packaging bag isolation valve according to claim 1, characterized in that: The valve body is an elongated structure, the valve cavity is an elongated cavity opened inside the valve body, the length direction of the valve body is the longitudinal direction, and the movement mode of the isolation part also includes sliding along the longitudinal direction; When the second communicating structure and the first communicating structure are in an isolated state, the isolation portion may first rotate and then slide to connect the second communicating structure with the first communicating structure.

3. The liquid packaging bag isolation valve according to claim 2, characterized in that: One longitudinal end of the valve body is an open end, and the other end is a closed end, and the open end of the valve body is connected to the internal valve cavity; The two connecting parts are respectively located on two longitudinal sides of the valve body; The isolation portion of the valve core can be inserted into the valve cavity through the open end of the valve body; A guide structure is provided at the connection between the valve core and the valve body, which can guide the movement direction of the isolation part.

4. The liquid packaging bag isolation valve according to claim 3, characterized in that: The first communication structure of the valve body includes: The first through hole is a through hole formed on the wall of the valve cavity, and the axis of the first through hole is not parallel to the axis of the valve cavity; The second communication structure includes: The second through hole is a through hole opened in the isolation portion.

5. The liquid packaging bag isolation valve according to claim 4, characterized in that: The first communication structure on each side of the valve body includes a plurality of first through holes, and the first through holes of the same first communication structure are evenly distributed along a longitudinal linear array; The second through hole of the second communication structure is arranged corresponding to the first through hole.

6. The liquid packaging bag isolation valve according to claim 5, characterized in that: A gap is left between the first through holes of the same first communication structure. When in an isolated state, the second through hole of the second communication structure is located on one side of the gap between the first through holes.

7. The liquid packaging bag isolation valve according to claim 6, characterized in that: The first through holes of the first communication structures on both sides have the same inner diameter and are coaxial; When in the isolated state, the axis of the second through hole and the axis of the first through hole are arranged in a non-planar and perpendicular manner; When in a communicating state, the second through hole and the first through hole are coaxial.

8. The liquid packaging bag isolation valve according to claim 7, characterized in that: The axis of the first through hole is perpendicular to the axis of the valve body.

9. The liquid packaging bag isolation valve according to claim 3, characterized in that: The guide structure comprises: a first guide groove, which is formed at the open end of the valve body and is a circular arc groove; a second guide groove, which is formed in the valve cavity and is located at an open end of the valve cavity facing the valve body, and is a straight groove formed along the longitudinal direction of the valve body; The end of the second guide groove is connected to the first guide groove; The guide block is arranged at the end of the isolation portion; the guide block can be slidably connected to the first guide groove and the second guide groove respectively.

10. The liquid packaging bag isolation valve according to claim 9, characterized in that: Also includes: The limiting structure can limit the longitudinal movement distance of the valve core; the limiting structure includes: A valve core stopper is provided on the valve core and is disposed near the open end of the valve body; The valve body limiting member is arranged on the valve body and corresponds to the valve core limiting member; when the valve core slides longitudinally, the valve core limiting member and the valve body limiting member are offset against each other.

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