Bovine serum multi-level filtering device

Abstract

The utility model relates to a multi-level bovine serum filtering device which comprises an upper cup, a connecting part and a liquid storage bottle, the upper cup is communicated with the liquid storage bottle through the connecting part, a filtering assembly is arranged in the upper cup, the multi-level bovine serum filtering device further comprises a liquid taking opening, the liquid taking opening is formed in the liquid storage bottle, a supporting sleeve is arranged at an inlet of the liquid taking opening, and a dehumidification sleeve is arranged on the lower portion of the supporting sleeve. An isolation assembly is arranged in the liquid taking opening, so that the dehumidification sleeve is not in contact with filtrate in the liquid storage bottle. According to the multi-level bovine serum filtering device, in a normal state, the isolation assembly is used for enabling the dehumidification sleeve not to make contact with filtrate, in an abnormal state, the transfer pipette can penetrate through the inner side of the dehumidification sleeve and stretch into the liquid storage bottle, and when the transfer pipette is pulled out, the dehumidification sleeve can absorb liquid on the outer wall of the transfer pipette, the liquid is prevented from dripping on a table top, and the cleanliness of the table top is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bovine serum filtration, in particular to a bovine serum multi-level filtration device. Background Art

[0002] In many experimental applications, filtration and separation steps such as sample purification, sample concentration, liquid disinfection and sterilization, and particle sampling are often involved. Currently, the commonly used filtration methods include gravity filtration, pressure filtration, vacuum filtration, centrifugal filtration, etc. Vacuum filtration has the advantages of fast filtration speed and simple and easy operation, and is increasingly used.

[0003] In laboratory operations, vacuum filters with microporous filter membranes are the most widely used type of vacuum filters. The commonly used vacuum filtration devices in laboratories are mainly composed of a filter cup, a cup cover, a filter collection bottle, a microporous filter membrane and a connecting device. Microporous membrane filtration refers to a technical method that uses pressure as a driving force and relies on the selectivity of the membrane to separate components of different sizes in a mixed component.

[0004] In the above-mentioned prior art, the vacuum filter can complete the filtration of bovine serum and store the filtered solution in a filtration collection bottle. Later, the solution in the filtration collection bottle needs to be pipetted for detection. In the pipetting detection, a pipette is usually used to transfer the bovine serum solution in the filtration collection bottle for detection, but a small amount of solution carried on the outer wall of the pipette will drip during the pipetting. For this reason, a bovine serum multi-level filtration device is proposed. Utility Model Content

[0005] Based on the above description, the utility model provides a bovine serum multi-level filtration device, which solves the technical problem that the existing vacuum filter cannot dehumidify the pipette, causing a small amount of solution to drip during the pipetting, affecting the cleanliness of the table.

[0006] The utility model solves the above technical problems with the following technical solutions: a bovine serum multi-level filtering device, comprising an upper cup, a connecting portion and a liquid storage bottle, wherein the upper cup is connected to the liquid storage bottle through the connecting portion, a filtering assembly is arranged in the upper cup, and further comprising:

[0007] The liquid taking port is arranged on the liquid storage bottle, a support sleeve is arranged at the inlet of the liquid taking port, a dehumidification sleeve is arranged at the lower part of the support sleeve, and an isolation component is arranged in the liquid taking port to prevent the dehumidification sleeve from contacting the filtrate of the liquid storage bottle.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the isolation assembly includes a sealing plate, which is partially located in the liquid intake port and forms a spatial isolation between the dehumidification sleeve and the filtrate. A accommodating cavity is provided at the bottom of the sealing plate, and a groove is provided on the liquid storage bottle. A spring is provided in the groove, and a card block is provided on the spring. The upper part of the card block is adapted in the accommodating cavity, thereby limiting the movement of the sealing plate.

[0010] Furthermore, a notch is provided on the inner wall of one side of the liquid taking port, and one side of the sealing plate is fitted in the notch.

[0011] Furthermore, the isolation assembly includes a transverse plate, which is located at the bottom of the support sleeve and fixedly connected to the liquid collection port. The transverse plate is provided with a through hole for the pipette to pass through. The transverse plate is also provided with an axial hole, in which a rotating shaft is rotatably arranged. A sealing strip is provided on the outside of the rotating shaft and is attached to the bottom of the transverse plate. The sealing strip is used to seal the through hole so that the dehumidification sleeve does not come into contact with the filtrate.

[0012] Furthermore, a positioning block is fixed at the bottom of the transverse plate. When the sealing strip rotates and contacts the positioning block, the sealing strip seals the through hole. A rotating cap located on the liquid extraction port is fixed at the top end of the rotating shaft.

[0013] Furthermore, the support sleeve is conical, and the diameter of the upper opening of the support sleeve is larger than the diameter of the lower opening of the support sleeve, so that the pipette can easily pass through the inner side of the dehumidification sleeve and extend into the liquid storage bottle.

[0014] Furthermore, the support sleeve has side wings, and the support sleeve is placed at the inlet of the liquid intake port through the side wings. The outer side of the liquid intake port is threadedly connected with a cover.

[0015] Furthermore, it also includes a bottle cap, and a tie is arranged between the liquid storage bottle and the bottle cap to prevent the bottle cap from being lost. The outer side of the liquid storage bottle is provided with a groove, and the groove is used to provide a gripping space to facilitate taking the liquid storage bottle.

[0016] Furthermore, the connecting part includes a connecting sleeve fixed on the bottom of the upper cup, the connecting sleeve is threadedly connected to the liquid storage bottle, an interface is provided on one side of the connecting sleeve, the interface is divided into three sections, and the outer diameters of the three sections of the interface gradually decrease.

[0017] Furthermore, the filter assembly includes a filter screen, filter paper and a sand core, a cup cover is provided on the upper cup, and the filter screen, filter paper and sand core are arranged in sequence from top to bottom.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] The bovine serum multi-level filtering device uses an isolation component to prevent the dehumidification sleeve from contacting the filtrate under normal conditions. Under abnormal conditions, the pipette can pass through the inner side of the dehumidification sleeve and extend into the liquid storage bottle. When the pipette is drawn out, the dehumidification sleeve can absorb the liquid on the outer wall of the pipette to prevent the liquid from dripping onto the table surface, thereby ensuring the cleanliness of the table surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a bovine serum multi-level filtration device provided in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure when half cut;

[0022] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A area;

[0023] Figure 4 This is a structural schematic diagram of the first embodiment of the isolation assembly in the embodiment of the utility model;

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle B area;

[0025] Figure 6 It is a structural schematic diagram of the second embodiment of the isolation component in the embodiment of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Upper cup; 2. Connecting part; 21. Connecting sleeve; 22. Interface; 3. Liquid storage bottle; 4. Filter assembly; 41. Filter screen; 42. Filter paper; 43. Sand core; 5. Liquid extraction port; 6. Support sleeve; 7. Dehumidification sleeve; 8. Isolation assembly; 81. Sealing plate; 82. Accommodating chamber; 83. Spring; 84. Block; 85. Positioning block; 86. Horizontal plate; 87. Rotating shaft; 88. Sealing strip; 9. Bottle cap; 10. Tie. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] like Figure 1-4 As shown, a bovine serum multi-level filtration device in this embodiment includes an upper cup 1, a connecting portion 2, a liquid storage bottle 3, a filter assembly 4, a liquid intake port 5, a support sleeve 6, a dehumidification sleeve 7 and an isolation assembly 8, wherein Figure 1-3 As shown, the upper cup 1 is connected to the liquid storage bottle 3 through the connecting portion 2. Figure 2As shown, the filter assembly 4 is detachably arranged in the upper cup 1, and the liquid taking port 5 is integrally connected and arranged on the liquid storage bottle 3. Figure 4-6 As shown, a support sleeve 6 is provided at the entrance of the liquid taking port 5, and a dehumidification sleeve 7 is pasted on the lower part of the support sleeve 6 for absorbing the liquid attached to the outer wall of the pipette. An isolation component 8 is provided in the liquid taking port 5, and the isolation component 8 is used to control whether the dehumidification sleeve 7 and the filtrate in the liquid storage bottle 3 are spatially isolated. Under normal conditions, the isolation component 8 is used to prevent the dehumidification sleeve 7 from contacting the filtrate. Under abnormal conditions, the pipette can pass through the inner side of the dehumidification sleeve 7 and extend into the liquid storage bottle 3.

[0030] In one embodiment, if Figure 3 As shown, the connecting portion 2 includes a connecting sleeve 21 fixed to the bottom of the upper cup 1, the connecting sleeve 21 is threadedly connected to the liquid storage bottle 3, and an interface 22 is integrally connected and provided on one side of the connecting sleeve 21. The interface 22 is used to connect the connecting pipe of the vacuum pump. The vacuum pump and the connecting pipe are not shown, but as shown in FIG. Figure 3 As shown, the interface 22 is divided into three sections, and the outer diameters of the three sections of the interface 22 gradually decrease so as to adapt to pipes with different diameters.

[0031] It should be noted that the support sleeve 6 is hollow from top to bottom, and the dehumidification sleeve 7 is a water-absorbing material that only needs to absorb the filtered liquid. For example, the dehumidification sleeve 7 is a sponge, hydrogenated cotton, gauze or towel.

[0032] When a pipette is used to take liquid, the pipette will contact the dehumidification sleeve 7, and the dehumidification sleeve 7 absorbs the liquid attached to the outer wall of the pipette, thereby avoiding dripping and ensuring the cleanliness of the table.

[0033] Further, such as Figure 4 and Figure 6 As shown, the support sleeve 6 is conical, and the inner wall of the support sleeve 6 can provide guidance for the insertion of the pipette. The upper diameter of the support sleeve 6 is larger than the lower diameter of the support sleeve 6, so that the pipette can easily pass through the inner side of the dehumidification sleeve 7 and extend into the liquid storage bottle 3.

[0034] In addition, the support sleeve 6 has side wings, and the support sleeve 6 is placed at the entrance of the liquid intake port 5 through the side wings, so that the support sleeve 6 and the dehumidification sleeve 7 can be easily removed, providing convenience for the replacement of the dehumidification sleeve 7, and the outer side of the liquid intake port 5 is threadedly connected with a cover.

[0035] It is understandable that there are various structures and positions of the isolation component 8. For ease of understanding, two specific structures and positions of the isolation component 8 are provided herein.

[0036] Embodiment 1

[0037] like Figure 4 and 5As shown, the isolation assembly 8 includes a sealing plate 81, which is partially located in the liquid intake port 5 and forms a spatial isolation between the dehumidification sleeve 7 and the filtrate. A accommodating cavity 82 is provided at the bottom of the sealing plate 81, and a groove is provided on the liquid storage bottle 3. A spring 83 is provided in the groove, and a block 84 is provided on the spring 83. The upper part of the block 84 is adapted in the accommodating cavity 82, thereby limiting the movement of the sealing plate 81.

[0038] Furthermore, a notch is provided on the inner wall of one side of the liquid taking port 5 , and one side of the sealing plate 81 is fitted into the notch.

[0039] Under normal circumstances, the sealing plate 81 is isolated to prevent the dehumidification sleeve 7 from contacting the filtrate, ensuring that the dehumidification sleeve 7 will not fail. In this way, when a pipette is used for pipetting, the block 84 is pressed, and then the sealing plate 81 is pulled to extend the pipette from the inside of the dehumidification sleeve 7 into the liquid storage bottle 3. When the pipette is pulled out, the dehumidification sleeve 7 can absorb the liquid on the outer wall of the pipette to prevent the liquid from dripping onto the table surface, thereby ensuring the cleanliness of the table surface.

[0040] Embodiment 2

[0041] like Figure 6 As shown, the isolation assembly 8 includes a transverse plate 86, which is located at the bottom of the support sleeve 6 and fixedly connected to the liquid collection port 5. A through hole is provided on the transverse plate 86 for the pipette to pass through. The transverse plate 86 also has an axial hole, in which a rotating shaft 87 is rotatably provided. A sealing strip 88 is provided on the outer side of the rotating shaft 87 and is attached to the bottom of the transverse plate 86. The sealing strip 88 is used to seal the through hole so that the dehumidification sleeve 7 does not come into contact with the filtrate.

[0042] Furthermore, in order to facilitate the judgment of whether the sealing strip 88 is rotated into place, a positioning block 85 is fixed at the bottom of the cross plate 86. When the sealing strip 88 rotates and contacts the positioning block 85, the sealing strip 88 seals the through hole, and a rotating cap located on the liquid intake port 5 is fixed at the top of the rotating shaft 87.

[0043] Under normal circumstances, the sealing strip 88 fits with the positioning block 85 and seals the through hole to prevent the dehumidification sleeve 7 from contacting the filtrate, ensuring that the dehumidification sleeve 7 will not fail. In this way, when a pipette is used for pipetting, the rotating cap is rotated to allow the sealing strip 88 to rotate around the rotating shaft 87. When the sealing strip 88 no longer blocks the through hole, the pipette is extended from the inside of the dehumidification sleeve 7 into the liquid storage bottle 3. When the pipette is pulled out, the dehumidification sleeve 7 can absorb the liquid on the outer wall of the pipette to prevent the liquid from dripping onto the table surface, thereby ensuring the cleanliness of the table surface.

[0044] Based on any of the above embodiments, the bovine serum multi-level filtration device also includes a bottle cap 9, a tie 10 is provided between the liquid storage bottle 3 and the bottle cap 9 to prevent the bottle cap 9 from being lost, and a groove is provided on the outer side of the liquid storage bottle 3, the groove is used to provide a holding space, and provides convenience for taking the liquid storage bottle 3.

[0045] In one embodiment, if Figure 3 As shown, the filter assembly 4 includes a filter screen 41, filter paper 42 and a sand core 43, which are arranged in sequence from top to bottom to form a multi-level filtration, and a cup cover is detachably provided on the upper cup 1, which covers the upper part of the upper cup 1 to prevent dust from entering the upper cup 1 during filtration.

[0046] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A bovine serum multi-level filtration device, comprising an upper cup (1), a connecting portion (2) and a liquid storage bottle (3), wherein the upper cup (1) is connected to the liquid storage bottle (3) via the connecting portion (2), and a filtering component (4) is arranged in the upper cup (1), characterized in that: Also includes: A liquid taking port (5) is arranged on the liquid storage bottle (3), a support sleeve (6) is arranged at the entrance of the liquid taking port (5), a dehumidification sleeve (7) is arranged at the lower part of the support sleeve (6), and an isolation component (8) is arranged in the liquid taking port (5) to prevent the dehumidification sleeve (7) from contacting the filtrate in the liquid storage bottle (3).

2. A bovine serum multi-stage filtration device according to claim 1, characterized in that: The isolation assembly (8) comprises a sealing plate (81), which is partially located in the liquid inlet (5) and forms a spatial isolation between the dehumidification sleeve (7) and the filtrate. A receiving cavity (82) is provided at the bottom of the sealing plate (81), and a groove is provided on the liquid storage bottle (3). A spring (83) is provided in the groove, and a block (84) is provided on the spring (83). The upper part of the block (84) is adapted to be in the receiving cavity (82), thereby limiting the movement of the sealing plate (81).

3. A bovine serum multi-stage filtration device according to claim 2, characterized in that: A notch is provided on the inner wall of one side of the liquid taking port (5), and one side of the sealing plate (81) is fitted into the notch.

4. A bovine serum multi-stage filtration device according to claim 1, characterized in that: The isolation assembly (8) comprises a transverse plate (86), which is located at the bottom of the support sleeve (6) and is fixedly connected to the liquid collection port (5). The transverse plate (86) is provided with a through hole for the pipette to pass through. The transverse plate (86) is also provided with an axial hole, in which a rotating shaft (87) is rotatably arranged. A sealing strip (88) is arranged on the outer side of the rotating shaft (87) and is attached to the bottom of the transverse plate (86). The sealing strip (88) is used to seal the through hole so that the dehumidification sleeve (7) does not come into contact with the filtrate.

5. A bovine serum multi-stage filtration device according to claim 4, characterized in that: A positioning block (85) is fixed at the bottom of the transverse plate (86). When the sealing strip (88) rotates and contacts the positioning block (85), the sealing strip (88) seals the through hole. A rotating cap located on the liquid extraction port (5) is fixed at the top end of the rotating shaft (87).

6. A bovine serum multi-stage filtration device according to any one of claims 1 to 5, characterized in that: The support sleeve (6) is tapered, and the diameter of the upper opening of the support sleeve (6) is larger than the diameter of the lower opening of the support sleeve (6), so that the pipette can easily pass through the inner side of the dehumidifying sleeve (7) and extend into the liquid storage bottle (3).

7. A bovine serum multi-stage filtration device according to claim 6, characterized in that: The support sleeve (6) has side wings, and the support sleeve (6) is placed at the entrance of the liquid intake port (5) through the side wings. The outer side of the liquid intake port (5) is threadedly connected with a cover.

8. The bovine serum multi-level filtration device according to claim 7, characterized in that: The liquid storage bottle (3) also includes a bottle cap (9), and a tie (10) is provided between the liquid storage bottle (3) and the bottle cap (9) to prevent the bottle cap (9) from being lost. The outer side of the liquid storage bottle (3) is provided with a groove, and the groove is used to provide a gripping space to facilitate taking the liquid storage bottle (3).

9. The bovine serum multi-stage filtration device according to claim 8, characterized in that: The connecting portion (2) comprises a connecting sleeve (21) fixed to the bottom of the upper cup (1), the connecting sleeve (21) being threadedly connected to the liquid storage bottle (3), an interface (22) being provided on one side of the connecting sleeve (21), the interface (22) being divided into three sections, and the outer diameters of the three sections of the interface (22) gradually decreasing.

10. The bovine serum multi-stage filtration device according to claim 9, characterized in that: The filter assembly (4) comprises a filter screen (41), filter paper (42) and a sand core (43); a cup cover is provided on the upper cup (1); and the filter screen (41), filter paper (42) and sand core (43) are arranged in sequence from top to bottom.

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