Liquid storage device

Abstract

The utility model provides a liquid storage device which comprises a shell, a liquid outlet, a liquid outlet, a liquid inlet, a liquid outlet and a liquid outlet. The sealing assembly is mounted in the mounting opening; and the separation module is arranged in the closed cavity, the separation module is used for separating the closed cavity into a liquid storage cavity and an anti-evaporation cavity, and the volume of the liquid storage cavity and the volume of the anti-evaporation cavity are variable. According to the scheme, under the action of the separation module, the liquid storage cavity is an independent closed space, gas in the anti-evaporation cavity can be prevented from entering the liquid storage cavity, therefore, the driving liquid in the liquid storage cavity does not generate bubbles, and the pumping precision of the driving liquid can be guaranteed; and meanwhile, the anti-evaporation cavity can protect the liquid storage cavity, so that the evaporation loss of the driving liquid in the liquid storage cavity is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of fluid storage technology, specifically to a liquid storage device. Background Technology

[0002] Even with a good seal, conventional liquid bags or reservoirs will still lose some moisture over time due to the inherent airtightness of the material. Therefore, existing liquid bags or reservoirs cannot meet the requirements of long-term storage with a loss of less than 3%.

[0003] In addition, the driving fluid is oxygen-free pure water, which will freeze and expand at temperatures below 0°C, easily damaging the reservoir or liquid bag. Therefore, a certain amount of space needs to be reserved for liquid expansion. However, the reserved space can also cause gas in the space to permeate / seep into the membrane material on the surface of the liquid bag or reservoir after long-term storage, causing air bubbles to form inside the liquid bag or reservoir. These air bubbles will affect the pumping accuracy of the micro pump.

[0004] Therefore, the technical problem that this application needs to solve is: how to reduce the evaporation loss of the driving fluid and avoid the structure of the liquid storage being burst while ensuring the delivery accuracy of the micropump. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a liquid storage device. Under the action of the partition module, the liquid storage chamber is a separate closed space, which can prevent gas in the anti-evaporation chamber from entering the liquid storage chamber. Therefore, the driving liquid in the liquid storage chamber will not generate bubbles, which can ensure the delivery accuracy of the external micro pump. At the same time, the anti-evaporation chamber can protect the liquid storage chamber and reduce the evaporation loss of the driving liquid in the liquid storage chamber.

[0006] Specifically, this utility model proposes a liquid reservoir, comprising:

[0007] A housing having a sealed chamber, and the surface of the housing having an installation port communicating with the sealed chamber;

[0008] A sealing assembly, which is installed in the mounting port;

[0009] A partition module is disposed in the sealed chamber, and the partition module is used to divide the sealed chamber into a liquid storage chamber and an anti-evaporation chamber, the volumes of the liquid storage chamber and the anti-evaporation chamber being variable.

[0010] Preferably, the shape or structure of the partition module is variable to adapt to changes in the volume of the liquid storage chamber.

[0011] Preferably, the separating module includes a liquid bag, the internal space of which forms the liquid storage cavity, and the space between the liquid bag and the shell forms the anti-evaporation cavity.

[0012] Furthermore, the anti-evaporation chamber is filled with water vapor and inert gas.

[0013] Preferably, the partition module includes an elastic membrane, which is used to divide the sealed chamber into a liquid storage chamber and an anti-evaporation chamber.

[0014] Preferably, the anti-evaporation chamber is provided with a buffer component.

[0015] Preferably, the buffer assembly includes an elastic rubber body, and the elastic rubber body is provided with a first vent hole.

[0016] Preferably, the buffer assembly includes a partition and an elastic reset member. The partition is mounted on the inner wall of the housing via the elastic reset member, and the partition is provided with a second vent hole.

[0017] Furthermore, a stop is provided on the inner wall of the housing, which is used to limit the movement distance of the partition.

[0018] Preferably, the sealing assembly includes:

[0019] A sealing plug, wherein the sealing plug is installed in the mounting port;

[0020] A waterproof and breathable membrane is installed on the inner wall of the housing and is used to completely cover the installation opening.

[0021] Preferably, the elastic membrane is provided with a sealing sticker. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0023] Figure 1 This is a schematic diagram of the internal structure of the liquid reservoir in Example 1;

[0024] Figure 2 This is a schematic diagram of the internal structure of the liquid reservoir in Example 2.

[0025] Figure 3 This is a schematic diagram of the internal structure of the reservoir when the driving fluid freezes and expands in Example 2;

[0026] Figure 4 This is a schematic diagram of the internal structure of the reservoir when the driving fluid is pumped outward in Example 2;

[0027] Figure 5 This is a schematic diagram of the internal structure of the liquid reservoir in Example 3;

[0028] Figure 6This is a schematic diagram of the internal structure of the reservoir when the dynamic liquid freezes and expands in Example 3;

[0029] Figure 7 This is a schematic diagram of the internal structure of the reservoir when the driving fluid is pumped outward in Example 3.

[0030] The reference numerals used in the attached figures are as follows:

[0031] 11-Shell; 12-Mounting port; 13-Sealing assembly; 14-Liquid storage chamber; 15-Anti-evaporation chamber; 16-Liquid bag; 17-Elastic membrane; 18-Elastic rubber body; 19-First vent; 20-Partition; 21-Elastic reset element; 22-Second vent; 23-Block; 24-Sealing plug; 25-Waterproof and breathable membrane; 26-Sealing ring; 27-Sealing sticker. Detailed Implementation

[0032] The technical solutions of this application will be further described below with reference to specific embodiments, but this application is not limited to these embodiments.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment proposes a liquid reservoir, comprising:

[0035] The housing 11 has a sealed chamber, and the surface of the housing 11 is provided with an installation port 12 that communicates with the sealed chamber.

[0036] Sealing assembly 13 is installed in mounting port 12;

[0037] A partition module is installed in a sealed chamber to divide the sealed chamber into a liquid storage chamber 14 and an anti-evaporation chamber 15. The volumes of the liquid storage chamber 14 and the anti-evaporation chamber 15 are variable.

[0038] The technical advantage of this solution is that by setting up an anti-evaporation chamber 15 to isolate the liquid storage chamber 14, the evaporation loss of the driving fluid can be reduced. Under the action of the separation module, the liquid storage chamber 14 is a separate closed space, which can prevent gas from entering the liquid storage chamber 14. Therefore, the driving fluid in the liquid storage chamber 14 will not generate bubbles, which can ensure the delivery accuracy of the external micropump.

[0039] When the ambient temperature is below 0°C, the anti-evaporation chamber 15 provides a buffer space for the volume change of the liquid storage chamber 14, which can prevent the driving fluid from damaging the shell 11 due to volume expansion.

[0040] Furthermore, the casing 11 is made of plastic.

[0041] Furthermore, the shape or structure of the partition module can be varied to accommodate changes in the volume of the reservoir 14.

[0042] As one embodiment of this invention, the separating module includes a liquid bag 16, the internal space of the liquid bag 16 forms a liquid storage cavity 14, and the space between the liquid bag 16 and the shell 11 forms an anti-evaporation cavity 15.

[0043] The driving fluid in the storage chamber 14 is oxygen-free pure water. The anti-evaporation chamber 15 is filled with water vapor and inert gas. Water vapor is used to ensure that the area around the liquid bag 16 is in a humid environment, thereby reducing the evaporation of the oxygen-free pure water inside the liquid bag 16.

[0044] Furthermore, the sealing assembly 13 includes:

[0045] The sealing plug 24 is installed in the mounting port 12 of the housing 11 by means of sealant;

[0046] A waterproof and breathable membrane 25 is installed on the inner wall of the housing 11 and is used to completely cover the installation port 12.

[0047] In this design, the sealing plug 24 is adhered to the outer packaging of the product. When the user uses the product, they can remove the packaging and the sealing plug 24 together, leaving the sealing component 13 on the packaging, eliminating the need for secondary removal by the customer. During operation, the inlet needle of the micro-pump pierces into the liquid bag 16, pumping the driving fluid in the liquid bag 16. When the volume of the liquid bag 16 changes, the waterproof and breathable membrane 25 maintains the air pressure balance in the anti-evaporation chamber 15.

[0048] Example 2

[0049] The difference between Example 2 and Example 1 is that the structure of the dividing module has been replaced, while the rest is the same as in Example 1, as detailed below:

[0050] like Figures 2 to 4 As shown, the separating module includes an elastic membrane 17, such as Figure 4 The elastic membrane 17 shown is used to divide the sealed chamber into a liquid storage chamber 14 and an anti-evaporation chamber 15. The anti-evaporation chamber 15 is located between the liquid storage chamber 14 and the sealing assembly 13.

[0051] As one embodiment of this invention, the anti-evaporation chamber 15 is provided with a buffer assembly.

[0052] As one embodiment of this invention, the buffer assembly includes an elastic rubber body 18, on which a first vent hole 19 is provided.

[0053] As one embodiment of this invention, the elastic membrane 17 is provided with a sealing sticker 27, and the sealing sticker 27 is located directly below the first vent hole 19. The sealing sticker 27 has a certain sealing function. When the liquid reservoir is in the storage or transfer stage, the sealing sticker 27 reduces the evaporation of the driving liquid by completely blocking the first vent hole 19.

[0054] like Figure 3 As shown, in this embodiment, when the ambient temperature is below 0°C, the driving fluid freezes and expands, and the elastic rubber body 18 is squeezed and contracted without damaging the housing 11.

[0055] like Figure 4 As shown, when the driving fluid is pumped outward, air enters the housing 11 through the waterproof and breathable membrane 25, making the anti-evaporation chamber 15 connected to the atmosphere, thus allowing the micro-pump to deliver the driving fluid normally. The elastic membrane 17 deforms downward to a certain extent due to the flexibility of the membrane material itself.

[0056] Example 3

[0057] The difference between Example 3 and Example 2 is that the structure of the buffer component has been replaced, while the rest is the same as in Example 2, as detailed below:

[0058] like Figure 5 As shown, the buffer assembly includes a partition 20 and an elastic reset member 21. The partition 20 is connected to the inner wall of the housing 11 of the elastic reset member 21. The edge of the partition 20 is provided with a sealing ring 26, and the partition 20 is provided with a second vent hole 22. The elastic reset member 21 is a spring.

[0059] When the reservoir is in the storage or transfer phase, the sealing patch 27 on the elastic membrane 17 reduces the evaporation of the driving fluid by completely blocking the second vent 22.

[0060] Furthermore, the partition 20 is made of plastic.

[0061] Furthermore, a stop 23 is provided on the inner wall of the housing 11, which is used to limit the movement distance of the partition 20.

[0062] Furthermore, the stop 23 is made of plastic.

[0063] Furthermore, the elastic membrane 17 is located between the stop block 23 and the partition plate 20, and the partition plate 20 can undergo elastic displacement under the action of the spring.

[0064] like Figure 6 As shown, when the driving fluid freezes in a cold environment below 0°C, it expands and compresses the partition 20. The spring connected to the partition 20 contracts without damaging the housing 11.

[0065] like Figure 7As shown, when oxygen-free pure water is pumped outward, air enters the interior of the housing 11 through the waterproof and breathable membrane 25, making the anti-evaporation chamber 15 connected to the atmosphere, thus allowing the micro-pump to normally deliver oxygen-free pure water. The elastic membrane 17 deforms downward to a certain extent due to the flexibility of the membrane material itself.

[0066] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A reservoir characterized by, The utility model relates to a kind of liquid storage device, including: Shell (11), the closed chamber is in the shell (11), and the surface of the shell (11) is equipped with the installation port (12) through the closed chamber; Sealing assembly (13), the sealing assembly (13) is installed in the installation port (12); Separation module, the separation module is arranged in the closed chamber, and the separation module is used to separate the closed chamber into liquid storage cavity (14) and anti-evaporation cavity (15), the volume of the liquid storage cavity (14) and the anti-evaporation cavity (15) can be changed.

2. The reservoir of claim 1, wherein, The shape or structure of the separation module can be changed to adapt to the volume change of the liquid storage cavity (14).

3. The reservoir of claim 1 or 2, wherein, The separation module includes liquid bag (16), the internal space of the liquid bag (16) forms the liquid storage cavity (14), and the space between the liquid bag (16) and shell (11) forms the anti-evaporation cavity (15).

4. The reservoir of claim 3, wherein, The anti-evaporation cavity (15) is filled with water vapor and inert gas.

5. The reservoir of claim 1 or 2, wherein, The separation module includes elastic film (17), and the elastic film (17) is used to separate the closed chamber into liquid storage cavity (14) and anti-evaporation cavity (15).

6. The reservoir of claim 5, wherein, The anti-evaporation cavity (15) is equipped with buffer assembly.

7. The reservoir of claim 6, wherein, The buffer assembly includes elastic rubber body (18), and the first air hole (19) is equipped on the elastic rubber body (18).

8. The reservoir of claim 6, wherein, The buffer assembly includes baffle (20) and elastic reset piece (21), the baffle (20) is installed on the inner wall of shell (11) by elastic reset piece (21), and the second air hole (22) is equipped on the baffle (20).

9. The reservoir of claim 8, wherein, The inner wall of the shell (11) is equipped with stop block (23), and the stop block (23) is used to limit the moving distance of the baffle (20).

10. The reservoir of claim 1, wherein, The sealing assembly (13) includes: Sealing plug (24), the sealing plug (24) is installed in the installation port (12); Waterproof air-permeable membrane (25), the waterproof air-permeable membrane (25) is installed on the inner wall of the shell (11), and the waterproof air-permeable membrane (25) is used to completely shield the installation port (12).

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