Leak-proof liquid storage bag
By setting a floating body and a ventilation hose in the ventilation valve of the liquid storage bag, we ensure that the end of the ventilation hose is always above the liquid surface, solving the problem of leakage in the ventilation port of the liquid storage bag and achieving the effect of effectively preventing liquid leakage.
Patent Information
- Application Number
- CN202420590395.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-25
AI Technical Summary
Existing liquid storage bags are prone to leakage of liquid at the vents, resulting in waste and contamination.
A leak-proof liquid storage bag is designed, and by providing a floating body and a ventilation hose in the ventilation valve, ensuring that the end of the ventilation hose is always above the liquid level, thereby preventing liquid leakage.
It effectively prevents liquid from leaking through the ventilation valve, reduces waste and pollution, and adapts to liquid storage bags with different placement angles and postures.
Smart Images
Figure CN222664242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid storage, in particular to an anti-leakage liquid storage bag. Background Art
[0002] Liquid storage bags are sterile storage bags used in the chemical or pharmaceutical fields for packaging, storing and transporting culture media, biological samples, buffer solutions and other liquids of various sizes.
[0003] Existing liquid storage bags are usually provided with a liquid inlet, a liquid outlet and a vent on the bag body, and valves are installed at the liquid inlet, the liquid outlet and the vent. When storing liquid, the valves on the liquid inlet and the vent are opened, and the liquid enters the liquid storage bag through the liquid inlet, and the gas in the liquid storage bag is discharged through the vent. After the liquid is full, the valves on the liquid inlet and the vent are closed; when using the liquid, the valves on the liquid outlet and the vent are opened, and the liquid is discharged from the liquid storage bag through the liquid outlet, and the external gas enters through the vent. After the liquid is discharged, the valves on the liquid outlet and the vent are closed.
[0004] However, in actual use, due to the placement and angle of the liquid storage bag, the liquid often leaks through the vent, resulting in waste and pollution. Utility Model Content
[0005] In view of the problem in the prior art that the liquid storage bag may leak through the vent, the purpose of the utility model is to provide a leakage-proof liquid storage bag so as to at least partially solve the above problem.
[0006] To achieve the above purpose, the technical solution of the utility model is:
[0007] A leak-proof liquid storage bag comprises a bag body, on which a feed valve, a discharge valve and a vent valve are installed, the vent valve comprises a valve body, a valve plug, a valve cover and a float, the valve body is fixedly installed on the bag body, the valve cover is detachably connected to one end of the valve body located outside the bag body, the valve plug is fixedly connected to one end of the valve body located inside the bag body, a vent hole is provided in the valve plug, a vent hose is connected to the end of the vent hole facing the inside of the bag body, and the float is fixed to the end of the vent hose.
[0008] In a preferred embodiment, the floating body is further provided with a counterweight block, and the counterweight block and the end of the ventilation hose are respectively located at two opposite sides of the floating body.
[0009] In a preferred embodiment, the floating body is provided with a pipe penetration hole adapted to the ventilation hose.
[0010] In a preferred embodiment, a pipe sleeve is rotatably connected to the ventilation hole, and the ventilation hose is fixedly connected to the pipe sleeve.
[0011] In a preferred embodiment, the bag body is made of transparent material.
[0012] In a preferred embodiment, a volume scale is provided on the surface of the bag body.
[0013] In a preferred embodiment, a protection box is further included, wherein the bag body is located in the protection box, and the protection box is provided with a feed notch, a discharge notch, and a vent notch for respectively exposing the feed valve, the discharge valve, and the vent valve.
[0014] In a preferred embodiment, an observation window is provided on the protection box.
[0015] In a preferred embodiment, the discharge valve is located outside the protection box, and the discharge valve is arranged on a discharge pipe connected to the bottom of the bag body. The protection box is provided with a through hole for connecting the inside and outside of the protection box and for the discharge pipe to pass through.
[0016] By adopting the above technical scheme, the beneficial effect of the utility model is that the utility model arranges the vent valve on the valve body, so that when it is necessary to pour liquid into the bag body, the feed valve and the valve cover in the vent valve are opened, and then the liquid can be poured into the bag body. During the pouring of liquid, the floating body can always float on the liquid surface after the placement angle and posture of the bag body change, thereby ensuring that the end of the vent hose is always above the liquid surface, thereby effectively preventing the liquid from leaking through the vent valve. After the pouring is completed, the feed valve and the valve cover in the vent valve are closed; conversely, when it is necessary to discharge the liquid stored in the bag body, the discharge valve and the valve cover in the vent valve are opened. During the discharge process, the floating body can always float on the liquid surface after the placement angle and posture of the bag body change, thereby ensuring that the end of the vent hose is always above the liquid surface, thereby effectively preventing the liquid from leaking through the vent valve. After the discharge is completed, the discharge valve and the valve cover in the vent valve are closed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the vent valve in the utility model;
[0019] Figure 3 Another structural schematic diagram of the vent valve in the utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model.
[0021] In the figure: 1-bag body, 101-volume scale, 2-feed valve, 3-discharge valve, 4-vent valve, 41-valve body, 42-valve cover, 43-valve plug, 44-float, 45-vent hole, 46-vent hose, 47-tube hole, 48-counterweight block, 49-pipe sleeve, 410-limit screw, 5-protection box. DETAILED DESCRIPTION
[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0023] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the description of the structure of the present invention as shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0024] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.
[0025] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood based on the overall idea of the utility model and the specific context of the scheme.
[0026] Embodiment 1
[0027] like Figure 1 As shown, an embodiment of the utility model provides a leakage-proof liquid storage bag, comprising a bag body 1, a feed valve 2, a discharge valve 3 and a vent valve 4.
[0028] The bag body 1 is made of a flexible material and expands into a substantially fixed shape after being filled with a medium. The bag body 1 is usually made of a transparent material for easy observation. In addition, a volume scale 101 is provided on the surface of the bag body 1 to facilitate real-time observation of the volume of the liquid in the bag body 1.
[0029] A feed pipe for connecting the inside and outside of the bag body 1 is fixed to the bag body 1, and a feed valve 2 is configured as a one-way valve and installed on the feed pipe, and the feed valve 2 is located on the outside of the bag body 1. A discharge pipe for connecting the inside and outside of the bag body 1 is also fixed to the bag body 1, and a discharge valve 3 is configured as a stop valve and installed on the discharge pipe, and the discharge valve 3 is also located on the outside of the bag body 1.
[0030] like Figure 2 As shown, the vent valve 4 includes a valve body 41, a valve cover 42, a valve plug 43 and a float 44. The valve body 41 is a hollow tubular structure, and the valve body 41 is fixedly mounted on the bag body 1. The valve body 41 is used to connect the inside and outside of the bag body 1. The valve cover 42 is detachably connected to one end of the valve body 41 located outside the bag body 1. For example, the valve cover 42 is configured as a columnar body made of elastic material, and the diameter of the valve cover 42 is slightly larger than the inner diameter of the valve body 41. One end of the valve cover 42 is configured with a chamfer to facilitate insertion into the valve body 41, and the other end of the valve cover 42 is connected to the valve body 41 through a drawstring made of elastic material to prevent the valve cover 42 from falling off; of course, in other preferred embodiments, the valve cover 42 can also be threadedly connected to the valve body 41. The valve plug 43 is configured as a columnar body, which is fixedly connected to one end of the valve body 41 located inside the bag body 1, for example, by threaded connection, welding, bonding or integral molding. The valve plug 43 is provided with a vent hole 45 along its axial direction, and the vent hole 45 penetrates the valve plug 43 along the axial direction. A ventilation hose 46 is fixedly connected to one end of the vent hole 45 facing the inside of the bag body 1, for example, by bonding or plugging a ventilation hose 46 with a slightly larger diameter into the vent hole 45 and plugging it tightly. The float 44 is located inside the bag body 1, and the float 44 is fixed to the end of the ventilation hose 46. For example, a through-hole 47 adapted to the ventilation hose 46 is provided on the float 44, and the through-hole 47 is a through-hole, and the end of the ventilation hose 46 is penetrated in the through-hole 47, and then the end of the ventilation hose 46 is fixed in the through-hole 47 by adhesive. With such arrangement, when liquid is poured into the bag body 1, it is only necessary to open the valve cover 42. During the pouring process, the float 44 will always float on the liquid surface after the placement angle and posture of the bag body 1 change, thereby ensuring that the end of the ventilation hose 46 is always above the liquid surface, effectively preventing the liquid from leaking through the vent hole 45; conversely, when the bag body 1 is draining, it is only necessary to open the valve cover 42. During the draining process, no matter what placement angle the bag body 1 is at, the float 44 will always float on the liquid surface, thereby ensuring that the end of the ventilation hose 46 is always above the liquid surface, effectively preventing the liquid from leaking through the vent hole 45.
[0031] It is easy to understand that in order to make the end of the ventilation hose 46 always face above the liquid surface, in a preferred embodiment, a counterweight block 48 is also provided on the float 44, such as Figure 2As shown, the above-mentioned ventilation hose 46 penetrates into the float 44 from one end of the through-tube hole 47, and the counterweight block 48 is arranged at the other end of the through-tube hole 47. With this arrangement, when the float 44 floats on the liquid surface, the end thereof equipped with the counterweight block 47 will always be below the liquid surface, and the corresponding other end will always be above the liquid surface, that is, the end of the through-tube hole 47 used for air intake or air outlet will always be above the liquid surface.
[0032] It is easy to understand that in order to prevent the ventilation hose 46 from accumulating elastic force during the swing or rotation around the ventilation hole and causing the floating body 44 to overturn, in a preferred embodiment, as shown in FIG. Figure 3 As shown, the vent hole 45 is also rotatably connected with a sleeve 49, for example, the two are clearance-fitted, and the outer wall of one end of the ventilation hose 46 is fixed in the inner wall of the sleeve 49, for example, by bonding. Among them, a step is provided at one end of the vent hole 45 facing the inside of the bag body 1 to prevent the sleeve 49 from falling off, and the inner diameter of the step is smaller than the diameter of the sleeve 49 but larger than the diameter of the ventilation hose 46. In addition, a stop screw 410 with a hollow inner hole is threadedly connected to one end of the vent hole 45 facing the outside of the bag body 1, and the stop screw 410 is used to prevent the sleeve 49 from falling off.
[0033] The use process of the anti-leakage liquid storage bag provided by the embodiment of the utility model is as follows:
[0034] When it is necessary to pour liquid into the bag body 1, open the feed valve 2 and the valve cover 42 in the vent valve 4, and then pour liquid into the bag body 1. During the process of pouring liquid, the floating body 44 can always float on the liquid surface after the placement angle and posture of the bag body 1 change, thereby ensuring that the end of the vent hose 46 is always above the liquid surface, thereby effectively preventing the liquid from leaking through the vent valve 4. After the filling is completed, close the feed valve 2 and the valve cover 42 in the vent valve 4; conversely, when it is necessary to discharge the liquid stored in the bag body 1, open the discharge valve 3 and the valve cover 42 in the vent valve 4. During the drainage process, the floating body 44 can always float on the liquid surface after the placement angle and posture of the bag body 1 change, thereby ensuring that the end of the vent hose 46 is always above the liquid surface, thereby effectively preventing the liquid from leaking through the vent valve 4. After the drainage is completed, close the discharge valve 3 and the valve cover 42 in the vent valve 4.
[0035] Embodiment 2
[0036] In this embodiment, Figure 4 As shown, the leak-proof liquid storage bag further comprises a protection box 5, and the bag body 1 is located in the protection box 5. The protection box 5 is configured with a shell-like structure, and the shape and size of its inner cavity are adapted to the shape and size of the bag body 1 after being filled with the medium.
[0037] The feed valve 2 and the vent valve 4 are arranged on the top side of the bag body 1, and the top of the protection box 5 is provided with a feed notch and a vent notch for respectively exposing the feed valve 2 and the vent valve 4, and usually the feed notch and the vent notch are through holes provided on the protection box 5. The discharge pipe for installing the discharge valve 3 is connected to the bottom side of the bag body 1, and correspondingly, a through hole for the discharge pipe to pass through is provided on the bottom side of the protection box 5, and the diameter of the through hole is configured to allow the discharge valve 3 to pass through, so that the discharge pipe can pass from the inside of the protection box 5 to the outside, and the discharge valve 3 is installed on the side of the discharge pipe located outside the protection box 5.
[0038] It is easy to understand that in order to prevent the protection box 5 from compressing the discharge pipe when it is placed, the bottom of the protection box 5 is provided with a support frame or a support table, for example, integrally formed on the protection box 5, so that there is a space between the bottom surface of the protection box 5 and the placement plane (the table surface for placing the protection box 5, such as a desktop) that can accommodate the discharge pipe and the discharge valve 3 thereon. In addition, in order to facilitate the connection of the discharge pipe to other containers, the discharge pipe is usually configured to have a certain length, and accordingly, a storage groove is provided on the outer wall (bottom wall or side wall) of the protection box 5. The storage groove is in the shape of a long strip, and can be straight or curved. At the same time, a card slot connected to the storage groove and used to fix the discharge valve 3 is also provided on the side wall of the protection box 5. When it is not necessary to discharge liquid, the discharge pipe passing through the inside of the protection box 5 and the discharge valve 3 installed thereon can be placed in the storage groove on the side of the protection box 5.
[0039] It is easy to understand that in order to facilitate observation of the liquid storage condition of the bag body 1, a hollow observation window is provided on the protection box 5, and the volume scale 101 on the bag body 1 is exposed from the observation window. The protection box 5 can be composed of two half shells assembled by screws or bonding, and the protection box 5 can also be integrally injection molded. When the bag body 1 is used, it is placed in the protection box 5 through the observation window, and the feed valve 2 and the vent valve 4 are extended from the feed notch and the vent notch respectively, and the discharge pipe and the discharge valve 3 installed thereon are passed through the through hole provided on the protection box 5.
[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.
Claims
1. A leak-proof liquid storage bag, characterized in that: It includes a bag body, on which a feed valve, a discharge valve and a vent valve are installed, the vent valve includes a valve body, a valve plug, a valve cover and a float, the valve body is fixedly installed on the bag body, the valve cover is detachably connected to one end of the valve body located outside the bag body, the valve plug is fixedly connected to one end of the valve body located inside the bag body, a vent hole is provided in the valve plug, a vent hose is connected to the end of the vent hole facing the inside of the bag body, and the float is fixed to the end of the vent hose.
2. The anti-leakage liquid storage bag according to claim 1, characterized in that: The floating body is also provided with a counterweight block, and the counterweight block and the end of the ventilation hose are respectively located at two opposite sides of the floating body.
3. The anti-leakage liquid storage bag according to claim 1, characterized in that: The floating body is provided with a pipe penetration hole matched with the ventilation hose.
4. The anti-leakage liquid storage bag according to claim 1, characterized in that: A pipe sleeve is rotatably connected in the vent hole, and the vent hose is fixedly connected in the pipe sleeve.
5. The anti-leakage liquid storage bag according to claim 1, characterized in that: The bag body is made of transparent material.
6. The anti-leakage liquid storage bag according to claim 5, characterized in that: The surface of the bag body is provided with volume scales.
7. The anti-leakage liquid storage bag according to claim 1, characterized in that: It also includes a protection box, the bag body is located in the protection box, and the protection box is provided with a feed notch, a discharge notch, and a venting notch for respectively exposing the feed valve, the discharge valve, and the venting valve.
8. The anti-leakage liquid storage bag according to claim 7, characterized in that: The protection box is provided with an observation window.
9. The anti-leakage liquid storage bag according to claim 7, characterized in that: The discharge valve is located outside the protection box, and the discharge valve is arranged on a discharge pipe connected to the bottom of the bag body. The protection box is provided with a through hole for connecting the inside and outside of the protection box and for the discharge pipe to pass through.