Homogenizing bag

Abstract

The utility model belongs to the technical field of bio-based cultivation, and discloses a homogenizing bag which comprises a bag body and a filter membrane, the bag body comprises a main body part and a filter part, the main body part and the filter part are integrally formed, a mixing cavity with an opening at one end is formed in the main body part, the filter part protrudes out of one side of the opening of the main body part, and the opening of the main body part forms an inlet at one side of the filter part. An auxiliary cavity communicated with the mixing cavity is formed in the filtering part, and the auxiliary cavity is opened in the side, facing the inlet, of the filtering part; the filter membrane extends to the opening of the auxiliary cavity from the side, away from the inlet, of the auxiliary cavity, and an outlet is formed in the side, located on the filter membrane, of the opening of the filter part. The filtering part is arranged on one side of the opening, the filtering membrane is arranged in the filtering part, the length size of the filtering membrane can be greatly reduced, the production cost of the homogenizing bag is reduced, the outlet is located in the side edge of the filtering part, the distance from the outlet to the liquid level of sample liquid can be reduced, suction of a pipettor is facilitated, and the operation mode is optimized.

Description

Technical Field

[0001] This utility model relates to the field of bio-based culture technology, and in particular to a homogenizing bag. Background Technology

[0002] In microbiological testing, samples containing microorganisms, such as food, tissues, and soil, are typically placed in a homogenizing bag along with a diluent. A beater is then used to rapidly break down, mix, and homogenize the sample, releasing the microorganisms or target substances for subsequent analysis and detection. Existing homogenizing bags with filtration functions typically have the bag body and filter membrane manufactured as a single unit for ease of processing and to ensure filtration efficiency. The filter membrane is positioned along the long side of the homogenizing bag, located at its center, dividing the bag into two chambers of different sizes. The sample and diluent are mixed in the larger chamber and then pass through the bag into the smaller chamber on the side. The user can then open the top of the bag and use a pipette to extract the desired liquid. However, in these types of homogenizing bags, the filter membrane and bag body are of equal length, while the height of the finished sample liquid is much smaller than the length of the filter membrane. This results in high material costs and requires precise pipette length and precise pipetting techniques. Utility Model Content

[0003] The purpose of this invention is to provide a homogenizing bag that is low in cost and easy to pipette.

[0004] To achieve this objective, the present invention adopts the following technical solution: a homogenizing bag, comprising a bag body and a filter membrane. The bag body includes a main body and a filtering part, which are integrally formed. A mixing chamber with one end open is formed inside the main body. The filtering part protrudes from one side of the opening of the main body. The opening of the main body forms an inlet on one side of the filtering part. The edge of the filtering part away from the inlet is flush with one side edge of the main body. A secondary chamber communicating with the mixing chamber is formed inside the filtering part. The secondary chamber is opened on the side of the filtering part facing the inlet. The filter membrane extends from the side of the secondary chamber away from the inlet to the opening of the secondary chamber and is spaced apart from the edge of the filtering part away from the main body. The opening of the filtering part forms an outlet on one side of the filter membrane.

[0005] Preferably, the filter membrane includes multiple filter layers stacked along the thickness direction of the bag body, and each filter layer includes multiple randomly stacked, crimped polyester fibers.

[0006] Preferably, the filter membrane is provided with a sealing portion, and the filter membrane is fixed to the inner wall of the filter section by heat fusion through the sealing portion.

[0007] Preferably, both the main body and the filter section are rectangular in shape.

[0008] Preferably, the filter membrane is spaced apart from the side edge facing the mixing chamber and the plane where the inlet is located.

[0009] Preferably, the sealing portion includes a first sealing edge and a second sealing edge that are perpendicular to each other. Along the length direction of the bag body, the first sealing edge is located on the side of the filter membrane closer to the outlet, and along the width direction of the bag body, the second sealing edge is located on the side of the filter membrane away from the inlet.

[0010] Preferably, the main body has a through hole on the side edge of the inlet opposite to the filter section.

[0011] Preferably, along the length of the bag body, the distance from the through hole to the side of the main body that forms the entrance is less than the distance to the other side.

[0012] Preferably, the bag body is a transparent plastic part.

[0013] Preferably, a scale line is provided on one side of the outer wall of the main body.

[0014] The beneficial effects of this invention are as follows: When using the homogenizing bag, the user can add the sample and diluent to the mixing chamber through the inlet and mix the sample. Then, the bag is rotated 90° so that the mixed liquid passes through the filter membrane and enters below the outlet of the secondary chamber. The sample liquid is then aspirated using a pipette. Positioning the filter section on one side of the opening and placing the filter membrane inside the filter section significantly reduces the length of the filter membrane, lowering the production cost of the homogenizing bag. Furthermore, the outlet being located on the side of the filter section reduces the distance from the outlet to the sample liquid surface, facilitating pipette aspiration and optimizing the operation. In addition, the independent design of the filter membrane and the mixing chamber prevents sample fragments from clogging the filter membrane during sample mixing, ensuring the filtration efficiency of the filter membrane. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the homogenizing bag according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram illustrating the use of the homogenizing bag according to an embodiment of the present invention;

[0017] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0018] In the diagram: 100, bag body; 110, main body; 111, third seal; 112, mixing chamber; 113, inlet; 114, through hole; 120, filtration section; 121, fourth seal; 122, secondary chamber; 123, outlet; 200, filter membrane; 210, sealing section; 211, first seal; 212, second seal. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0023] Reference Figure 1 and Figure 2As shown in the embodiment of this application, the homogenizing bag includes a bag body 100 and a filter membrane 200. The bag body 100 is formed by bonding two membrane sheets of the same shape and size. The bag body 100 includes a main body 110 and a filter section 120, which are integrally formed. A U-shaped third sealing edge 111 is provided between the edges of the two membrane sheets forming the main body 110, so that a mixing chamber 112 with one end open is formed in the main body 110. The filter section 120 protrudes from one side of the opening of the main body 110, and an inlet 113 is formed on one side of the filter section 120 at the opening of the main body 110. In other words, the filter section 120 is formed by... Two membranes of part 20 are horizontally disposed across one side of the opening of part of the main body 110. The side edge of the filter part 120 away from the inlet 113 is flush with one side edge of the main body 110. A secondary cavity 122 communicating with the mixing chamber 112 is formed in the filter part 120. The secondary cavity 122 is provided with an opening on the side of the filter part 120 facing the inlet 113. Specifically, an L-shaped fourth sealing edge 121 is provided between the edges of the two membranes forming the filter part 120. The long side of the fourth sealing edge 121 is integrally formed with the side edge of the third sealing edge 111 near the filter part 120. The short side of the fourth sealing edge 121 is spaced apart from the opening of the main body 110 along the opening direction.

[0024] The filter membrane 200 extends from the side of the sub-cavity 122 away from the inlet 113 to the opening of the sub-cavity 122 and is spaced apart from the edge of the filter section 120 away from the main body 110. In other words, the filter membrane 200 extends from the long side of the fourth sealing edge 121 to the opening of the filter section 120, and the short side of the fourth sealing edge 121 of the filter membrane 200 is spaced apart. The opening of the filter section 120 forms an outlet 123 on one side of the filter membrane 200.

[0025] Understandably, when using a homogenizing bag, the user can add the sample and diluent to the mixing chamber 112 through the inlet 113 and mix the sample. Then, the bag body 100 is rotated 90° so that the mixed liquid passes through the filter membrane 200 and enters below the outlet 123 of the secondary chamber 122. The liquid is then aspirated using a pipette. With the filter section 120 located on one side of the opening and the filter membrane 200 located inside the filter section 120, the filter membrane 200 can be arranged along the short side of the homogenizing bag during production, significantly reducing its length and production cost. Furthermore, with the outlet 123 located on the side of the filter section 120, the distance from the outlet 123 to the sample liquid surface is reduced, eliminating the need for a longer pipette tip and facilitating pipette aspiration, thus optimizing the operation. In addition, the independent arrangement of the filter membrane 200 and the mixing chamber 112 prevents sample fragments from clogging the filter membrane 200 during sample mixing, ensuring the filtration efficiency of the filter membrane 200.

[0026] Furthermore, the bag body 100 is a transparent plastic component. Specifically, the two films constituting the homogeneous bag can be made of transparent polyethylene (PE), polypropylene (PP), polyester (PET), or nylon (PA) materials, or they can be made of composite materials of the above-mentioned materials stacked together.

[0027] By making the bag body 100 a transparent plastic part, while ensuring that the bag body 100 has sufficient strength to withstand a certain amount of impact, users can easily observe the mixing of the sample and diluent in the mixing chamber 112, thereby improving the user experience.

[0028] Reference Figure 1 As shown, it can be understood that the filter membrane 200 is provided with a sealing portion 210, and the filter membrane 200 is heat-fused to the inner wall of the filter portion 120 through the sealing portion 210.

[0029] By heat-melting the filter membrane 200 to the inner wall of the filter section 120 (i.e., the two opposite side walls of the two membranes), the installation stability of the filter membrane 200 can be effectively improved, and the homogenization bag forming process can be facilitated, thereby improving the production efficiency and structural stability of the homogenization bag.

[0030] Furthermore, the filter membrane 200 includes multiple filter layers stacked along the thickness direction of the bag body 100, and each filter layer includes multiple randomly stacked crimped polyester fibers.

[0031] Compared to the traditional non-woven filter membrane 200 formed by stacking and bonding multiple layers of interwoven cotton fibers, the filter membrane 200 composed of randomly stacked polyester fibers has a larger pore size, which facilitates the passage of sample liquids, greatly improves the permeability of the filter membrane 200, and enhances the filtration efficiency of the filter membrane 200.

[0032] Reference Figure 1 and Figure 2 As shown, it can be understood that both the main body 110 and the filter part 120 are rectangular in shape, and the length of the filter part 120 is less than or equal to the width of the main body 110.

[0033] Both the main body 110 and the filter 120 are rectangular in shape. The notch structure on the side of the inlet 113 away from the filter 120 from the opening of the filter 120 is also rectangular. When producing homogenizing bags, users can first process the two rectangular membranes and the filter membrane 200 as a single unit to form a sealed rectangular bag body 100 (at this time, the third sealing edge 111 and the fourth sealing edge are part of a complete rectangular sealing edge). Then, a horizontal cut is made above the opening of the main body 110, and a vertical cut is made on the side of the inlet 113 (or a vertical cut followed by a horizontal cut, or both cut simultaneously), to obtain the finished homogenizing bag. This effectively simplifies the shape and structure of the homogenizing bag, facilitates its production and processing, and reduces the production and design costs.

[0034] Furthermore, the sealing portion 210 includes a first sealing edge 211 and a second sealing edge 212 that are perpendicular to each other. That is, the sealing portion 210 is rectangular in shape. Along the length direction of the bag body 100, the first sealing edge 211 is located on the side of the filter membrane 200 near the outlet 123. Along the width direction of the bag body 100, the second sealing edge 212 is located on the side of the filter membrane 200 away from the inlet 113.

[0035] By setting a first sealing edge 211 and a second sealing edge 212, which are respectively heat-fused to the inner wall of the bag body 100, the filter membrane 200 can be limited along the length and width directions of the bag body 100. This prevents the filter membrane 200 from swaying or wrinkling when the liquid in the mixing chamber 112 comes into contact with the filter membrane 200, thus affecting the purity of the finished liquid. This improves the installation stability of the filter membrane 200 while ensuring the filtration accuracy of the filter membrane 200.

[0036] Reference Figure 2 As shown, it can be understood that the main body 110 has a through hole 114 on the side edge of the inlet 113 opposite to the filter section 120. Optionally, one through hole 114 may be provided, or multiple through holes may be provided along the length of the bag body 100.

[0037] By providing the through hole 114, the external hanging device can easily hang the bag 100 and rotate the bag 100, thereby improving the practicality of the bag 100.

[0038] Furthermore, along the length of the bag body 100, the distance from the through hole 114 to the side of the main body 110 that forms the entrance 113 is less than the distance to the other side. In other words, along the length of the bag body 100, the through hole 114 is located at a position slightly above the middle of the main body 110.

[0039] The through hole 114 is positioned slightly above the middle of the bag body 100 to prevent the bag body 100 from tipping over during the external suspension device's rotation, which would affect liquid filtration.

[0040] Reference Figure 3 As shown, it can be understood that along the length of the bag body 100, the filter membrane 200 is spaced apart from the side edge facing the mixing chamber 112 and the plane where the inlet 113 is located. That is, when the bag body 100 is arranged vertically, along the length of the bag body 100, the bottom surface of the filter membrane 200 is higher than the top surface of the main body 110.

[0041] The bottom surface of the filter membrane 200 and the top surface of the main body 110 are spaced apart to prevent the bottom surface of the filter membrane 200 from coinciding with or being lower than the plane where the inlet 113 is located. This ensures that the filter membrane 200 above the opening of the main body 110 can be completely removed during the production of the homogenizing bag, thus preventing filter membrane 200 residue from affecting subsequent sample feeding or diluent addition.

[0042] Furthermore, a scale line is provided on one outer wall of the main body 110. The data marked on the scale line can be the liquid level height in the mixing chamber 112, or the total liquid volume at the corresponding height (the volume value can be obtained in advance based on the length and width dimensions of the main body 110).

[0043] By setting scale lines, users can easily observe the volume and mass of the liquid in the mixing chamber 112, allowing them to accurately control the total amount of sample liquid required and improving the ease of use of the homogenizing bag.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A homogenizing bag, characterized in that, include: The bag body (100) includes a main body (110) and a filter (120), the main body (110) and the filter (120) are integrally formed, a mixing chamber (112) with one end open is formed in the main body (110), the filter (120) protrudes from one side of the opening of the main body (110), the opening of the main body (110) forms an inlet (113) on one side of the filter (120), the edge of the filter (120) away from the inlet (113) is flush with one side edge of the main body (110), a secondary chamber (122) communicating with the mixing chamber (112) is formed in the filter (120), the secondary chamber (122) is provided with an opening on the side of the filter (120) facing the inlet (113); The filter membrane (200) extends from the side of the sub-cavity (122) away from the inlet (113) to the opening of the sub-cavity (122) and is spaced apart from the edge of the filter section (120) away from the main body (110). The opening of the filter section (120) forms an outlet (123) on one side of the filter membrane (200).

2. The homogenizing bag according to claim 1, characterized in that, The filter membrane (200) includes multiple filter layers stacked along the thickness direction of the bag body (100), and each filter layer includes multiple randomly stacked, curled polyester fibers.

3. The homogenizing bag according to claim 2, characterized in that, The filter membrane (200) is provided with a sealing portion (210), and the filter membrane (200) is fixed to the inner wall of the filter portion (120) by heat fusion through the sealing portion (210).

4. The homogenizing bag according to any one of claims 1-3, characterized in that, Both the main body (110) and the filter (120) are rectangular in shape.

5. The homogenizing bag according to claim 4, characterized in that, The filter membrane (200) is spaced apart from the side edge facing the mixing chamber (112) and the plane where the inlet (113) is located.

6. The homogenizing bag according to claim 3, characterized in that, The sealing portion (210) includes a first sealing edge (211) and a second sealing edge (212) that are perpendicular to each other. Along the length direction of the bag body (100), the first sealing edge (211) is located on the side of the filter membrane (200) closer to the outlet (123). Along the width direction of the bag body (100), the second sealing edge (212) is located on the side of the filter membrane (200) away from the inlet (113).

7. The homogenizing bag according to claim 1, characterized in that, The main body (110) has a through hole (114) on the side edge of the inlet (113) opposite to the filter (120).

8. The homogenizing bag according to claim 7, characterized in that, Along the length of the bag body (100), the distance from the through hole (114) to the side of the main body (110) that forms the entrance (113) is less than the distance to the other side.

9. The homogenizing bag according to claim 1, characterized in that, The bag body (100) is a transparent plastic part.

10. The homogenizing bag according to claim 9, characterized in that, The outer wall of one side of the main body (110) is provided with scale lines.

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