Multi-layer liquid bag structure

Abstract

The utility model provides a multilayer liquid bag structure which comprises a first liquid bag, a second liquid bag and a third liquid bag, the second liquid bag is fixed between the first liquid bag and the third liquid bag, the first liquid bag and the third liquid bag are respectively provided with an avoiding opening, and the avoiding openings are used for providing avoiding space when the second liquid bag expands. According to the scheme, the avoiding openings are formed in the first liquid bag and the third liquid bag and used for enabling the second liquid bag to be completely expanded during liquid filling, on the premise that the liquid storage amount of the second liquid bag is not changed, the first liquid bag and the third liquid bag fill the edge of the outer surface of the second liquid bag during liquid storage, and on the premise that the space of the liquid bag bin is constant, the liquid storage amount of the second liquid bag is not changed. According to the scheme, the liquid bag bin can be fully filled with the multi-layer liquid bag, and therefore the space utilization rate of the liquid bag is remarkably increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fluid package, concretely relates to a multilayer liquid bag structure. BACKGROUND

[0002] The container for storing driving liquid usually adopts a single liquid bag, due to the limitation of the current liquid bag manufacturing process, the liquid bag body is usually formed by hot pressing two pieces of plane film material, and the external pipeline is connected. When the liquid bag is filled with liquid, the middle part is bulged, and the two sides cannot be filled with the liquid bag warehouse due to the limitation of the hot pressing edge, therefore, the volume utilization rate of the existing liquid bag is generally about 35%.

[0003] In addition, long-term preservation of the liquid bag has a high airtightness requirement for the liquid bag material, causing the outer layer hardness of the composite film material for manufacturing the liquid bag to be high. At the same time, in order to fill as much driving liquid as possible in the limited liquid bag warehouse space, the liquid bag warehouse refers to the space for storing the liquid bag, and the flexibility of the liquid bag material is required to be high enough, which conflicts with the requirement of airtightness on the film material.

[0004] Therefore, the technical problem to be solved by the present application is how to improve the liquid storage capacity of the liquid bag under the premise that the liquid bag warehouse space is constant. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the utility model provides a multilayer liquid bag structure, in the scheme, the first liquid bag and the third liquid bag are provided with avoiding openings, which are used for enabling the second liquid bag to be completely expanded when being filled with liquid, under the premise that the liquid storage amount of the second liquid bag is unchanged, the first liquid bag and the third liquid bag form edges for filling the outer surface of the second liquid bag when storing liquid, under the premise that the liquid bag warehouse space is constant, the multilayer liquid bag of the scheme can be fully filled in the liquid bag warehouse, thereby significantly improving the space utilization rate of the liquid bag.

[0006] Specifically, the utility model provides a multilayer liquid bag structure, including first liquid bag, second liquid bag and third liquid bag, the second liquid bag is fixed between first liquid bag and third liquid bag, first liquid bag and third liquid bag are equipped with avoiding opening respectively, the avoiding opening is used for providing avoiding space when the second liquid bag expands.

[0007] Preferably, the first liquid bag, the second liquid bag and the third liquid bag are respectively provided with a connecting pipeline.

[0008] Preferably, the first liquid bag, the second liquid bag and the third liquid bag are respectively hot-pressed and fixed with the connecting pipeline.

[0009] Preferably, the first liquid bag, the second liquid bag and the third liquid bag are hot-pressed and fixed.

[0010] Preferably, the avoiding opening is located in the middle part of the first liquid bag or the third liquid bag.

[0011] Preferably, the avoiding port is one of a polygon, a circle and an ellipse.

[0012] Preferably, the avoiding port is a quadrangle.

[0013] Preferably, the avoiding port is a rectangle.

[0014] Preferably, the liquid outlet ends of the connecting pipelines on the first liquid bag, the second liquid bag and the third liquid bag are used to be mounted on the same liquid path conversion piece, and the liquid path conversion piece is connected with a liquid path switch piece through an outflow pipeline.

[0015] Preferably, a sealing rubber plug is mounted on the outlet end of the liquid path switch piece. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0017] Figure 1 is the front view of the first liquid bag in the multi-layer liquid bag structure proposed by the present embodiment;

[0018] Figure 2 is the front view of the second liquid bag in the present embodiment;

[0019] Figure 3 is the front view of the third liquid bag in the present embodiment;

[0020] Figure 4 is the connection relationship between the multi-layer liquid bag structure and the liquid path conversion piece proposed by the present embodiment;

[0021] Figure 5 is Figure 4 is the local enlarged view of A in the present embodiment;

[0022] Figure 6 is the installation position of the liquid path switch in the present embodiment;

[0023] Figure 7 is the structure schematic view of the multi-layer liquid bag structure in the present embodiment from the top direction.

[0024] The labels involved in the drawings are as follows:

[0025] 11-first liquid bag; 12-second liquid bag; 13-third liquid bag; 14-avoiding port; 15-connecting pipeline; 16-liquid path conversion piece; 17-outflow pipeline; 18-liquid path switch piece. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be further described in combination with specific embodiments, but the present application is not limited to these embodiments.

[0027] As shown in Figures 1 to 7 The embodiment proposes a multi-layer liquid bag structure, which comprises a first liquid bag 11, a second liquid bag 12 and a third liquid bag 13, the second liquid bag 12 is fixed between the first liquid bag 11 and the third liquid bag 13; the first liquid bag 11 and the third liquid bag 13 are respectively provided with an avoiding port 14, which is used to provide an avoiding space when the second liquid bag 12 is inflated.

[0028] The technical effect of the scheme is that the storage capacity of the liquid bag can be significantly improved, and the space utilization of the liquid bag is effectively improved.

[0029] In the scheme, the avoiding port 14 is arranged in the first liquid bag 11 and the third liquid bag 13, which is used to make the second liquid bag 12 fully inflated when filled with liquid. On the premise of ensuring the liquid storage capacity of the second liquid bag 12, the first liquid bag 11 and the third liquid bag 13 form an edge filling on the outer surface of the second liquid bag 12 when storing liquid. On the premise that the liquid bag warehouse space is constant, the multi-layer liquid bag of the scheme can be fully filled in the liquid bag warehouse, thereby significantly improving the space utilization of the liquid bag. The liquid bag warehouse is used to install the multi-layer liquid bag, and the structure of the liquid bag warehouse is not embodied in the drawings.

[0030] As an embodiment of the embodiment, the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13 are respectively provided with a connecting pipeline 15.

[0031] In the scheme, the connecting pipeline 15 is used to fill the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13, or to flow out the liquid in the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13.

[0032] As an embodiment of the embodiment, the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13 are respectively fixed with the connecting pipeline 15 by hot pressing.

[0033] The technical effect of the scheme is that, compared with the way of connecting by using glue in the prior art, the connecting pipeline 15 is fixed by hot pressing in the scheme, which can improve the sealing of each liquid bag and is more convenient for storing liquid.

[0034] As an embodiment of the embodiment, the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13 are fixed by hot pressing. Each liquid bag is formed by hot pressing of a film material. The film material can adopt a planar structure, and the film material is folded and hot pressed to form a liquid bag. Or the film material is a cylindrical structure, and the liquid bag is directly formed by hot pressing. The film material is a composite flexible film material.

[0035] As an embodiment of the present embodiment, the avoiding opening 14 is located in the middle of the first liquid bag 11 or the third liquid bag 13, wherein the avoiding opening 14 has the following shape:

[0036] As an embodiment of the shape of the avoiding opening 14, the avoiding opening 14 is polygonal. In particular, the avoiding opening 14 can be quadrilateral. Further, the avoiding opening 14 has a rectangular structure, and at this time, the first liquid bag 11 and the third liquid bag 13 have a Huazi-shaped structure, which avoids the place where the volume of the second liquid bag 12 filled with liquid is most fully utilized, fills the space where the space utilization is insufficient due to the hardness of the material and the manufacturing process of the liquid bag, and is used to increase the space utilization of the liquid in the multi-layer liquid bag.

[0037] As another embodiment of the shape of the avoiding opening 14, the avoiding opening 14 can be circular or elliptical.

[0038] As an embodiment of the present embodiment, the liquid outlet end of the connecting pipeline 15 on the first liquid bag 11, the second liquid bag 12 and the third liquid bag 13 is used to be mounted on the same liquid path switching piece 16, and the liquid path switching piece 16 is connected with a liquid path switch piece 18 through the outflow pipeline 17. The liquid path switching piece 16 is used to combine the liquid in the three connecting pipelines 15 into the outflow pipeline 17.

[0039] Further, the connecting pipeline 15 and the outflow pipeline 17 are flexible pipelines.

[0040] As an embodiment of the liquid path switch, the outlet end of the liquid path switch piece 18 is mounted with a sealing rubber plug. Further, the sealing rubber plug is a flexible sealing element, and the sealing rubber plug is mounted on the outlet end of the liquid path switch piece 18 through a rubber plug sealing fixing piece. By pulling or pressing the rubber plug sealing fixing piece, the external micropump inlet needle pierces and penetrates the sealing rubber plug, realizing the on-off function of the liquid path. The present embodiment is not used to limit the specific structure and function of the liquid path switch piece 18, and in addition, the liquid path switch piece 18 of the present embodiment can also use other structures in the prior art.

[0041] For those skilled in the art, without departing from the inventive concept of the present utility model, a number of modifications, improvements or conventional means can be replaced, which all belong to the protection scope of the present utility model.

Claims

1. A multi-layered liquid bag structure, characterized by, The application relates to a liquid bag, which comprises a first liquid bag (11), a second liquid bag (12) and a third liquid bag (13), the second liquid bag (12) being fixed between the first liquid bag (11) and the third liquid bag (13), the first liquid bag (11) and the third liquid bag (13) being respectively provided with an avoiding opening (14) for providing an avoiding space when the second liquid bag (12) is inflated.

2. The multi-layered liquid bag structure according to claim 1, wherein, The first liquid bag (11), the second liquid bag (12) and the third liquid bag (13) are respectively provided with a connecting pipeline (15).

3. The multi-layered liquid bag structure according to claim 1, wherein, The first liquid bag (11), the second liquid bag (12) and the third liquid bag (13) are respectively heat-pressed and fixed with the connecting pipeline (15).

4. The multi-layered liquid bag structure according to claim 1, wherein, The first liquid bag (11), the second liquid bag (12) and the third liquid bag (13) are heat-pressed and fixed.

5. The multi-layered liquid bag structure according to claim 1, wherein, The avoiding opening (14) is located in the middle of the first liquid bag (11) or the third liquid bag (13).

6. The multi-layered liquid bag structure according to claim 1 or 5, wherein The avoiding opening (14) is one of a polygon, a circle and an ellipse.

7. The multi-layered liquid bag structure according to claim 1 or 5, wherein The avoiding opening (14) is a quadrangle.

8. The multi-layered liquid bag structure according to claim 1 or 5, wherein, The avoiding opening (14) is a rectangle.

9. The multi-layered liquid bag structure according to claim 2, wherein, The liquid outlet ends of the connecting pipelines (15) on the first liquid bag (11), the second liquid bag (12) and the third liquid bag (13) are used for being mounted on the same liquid path switching piece (16), the liquid path switching piece (16) being connected with a liquid path switching piece (18) through an outflow pipeline (17).

10. The multi-layered liquid bag structure according to claim 9, wherein, The outlet end of the liquid path switching piece (18) is mounted with a sealing rubber plug.

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