Filtering device for sample solution

Abstract

The utility model belongs to the technical field of sample treatment equipment, and provides a filter device for sample solution, which comprises an upper pressure plate and a lower tray which are detachably connected, and a filter disc positioned between the upper pressure plate and the lower tray, the upper pressure plate is provided with an upper filter cavity and a feed port communicated with the upper filter cavity, the lower tray is provided with a lower filter cavity and a discharge port communicated with the lower filter cavity, and the filter disc is clamped and fixed in an accommodating space formed by the upper filter cavity and the lower filter cavity. According to the filtering device for the sample solution, provided by the utility model, adaptive filtering discs can be replaced according to different sample solutions, the filtering device is suitable for filtering treatment of different sample solutions, the application range is wide, the practicability is high, and the treatment requirements of different sample solutions are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample processing equipment, and in particular relates to a filtering device for sample solution. Background Art

[0002] Currently, sample solutions, such as buffers, tissue culture media, growth media, and reagents, require filtration and extraction during the sampling process and subsequent sample processing to remove particulate matter. However, existing solution filtration equipment generally only filters specific sample solutions, operating in a single environment and not adapting to different sample solution processing conditions. This results in low equipment utilization. For example, when processing sample solutions that require filtration of particles of different particle sizes, different filtration equipment must be used, and sample solution loss is highly likely to occur during the filtration process.

[0003] Therefore, it is necessary to design a sample solution filtering device that can effectively solve the above problems and defects. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model proposes a filtering device for sample solutions, which can be used for filtering aqueous sample solutions such as buffer solutions, culture media and reagents, and filtering out particulate matter contained in the solutions. The filter disc can be replaced with a suitable filter disc for different sample solutions, and is suitable for filtering and processing different sample solutions. It has a wide range of applications and strong practicality, and can meet the processing requirements of different sample solutions.

[0005] The technical solution of the utility model is:

[0006] The utility model provides a filtering device for a sample solution, comprising an upper pressing plate and a lower tray that are detachably connected, and a filter plate located between the upper pressing plate and the lower tray;

[0007] The upper pressure plate is provided with an upper filter chamber and an inlet connected to the upper filter chamber, the lower tray is provided with a lower filter chamber and an outlet connected to the lower filter chamber, and the filter plate is clamped and fixed in the accommodating space formed by the upper filter chamber and the lower filter chamber.

[0008] Preferably, the upper platen is provided with a plurality of positioning holes spaced apart along the circumferential direction, and the lower tray is provided with a plurality of positioning posts adapted to the positioning holes;

[0009] The positioning post passes through the positioning hole upwards and a screw-on cover is provided at the end thereof which is threadedly connected thereto.

[0010] Preferably, the upper pressure plate is further provided with an air outlet communicated with the upper filter cavity.

[0011] Preferably, the lower tray is further provided with a plurality of mounting holes spaced apart along the circumferential direction.

[0012] Preferably, the sample solution filtering device provided by the present invention further comprises a liquid collecting funnel detachably connected to the upper pressure plate, and the liquid collecting funnel is connected to the upper filter chamber through the feed port.

[0013] Preferably, the sample solution filtering device provided by the present invention further includes an interface assembly detachably connected to the lower tray, the lower tray is provided with a connection disk connected to the discharge port, and the interface assembly is provided with an interface plug sealedly connected to the connection disk.

[0014] Preferably, the interface assembly further comprises a sealing gasket arranged between the connecting disk and the interface plug.

[0015] Preferably, the interface assembly further comprises a clamp lock fixed to the connection plate and the outer periphery of the interface plug, and the clamp lock is provided with two movably connected clamps.

[0016] Compared with the prior art, the present invention has the following advantages and effects:

[0017] (1) The upper pressure plate and the lower tray are detachably connected, and the filter plate is located between the upper pressure plate and the lower tray. The corresponding filter plate can be replaced as needed to meet the filtering and processing requirements of different sample solutions. It is highly practical and has a wide range of applications.

[0018] (2) An upper platen with an air outlet is used so that when the sample solution is injected through the feed port of the upper platen, the residual gas inside the filter device can be discharged through the air outlet to ensure the normal progress of the filtration process;

[0019] (3) A detachable liquid collecting funnel is used at the feed inlet of the upper pressure plate to be suitable for the filtration treatment of some sample solutions that need to be poured out, so as to be suitable for the filtration treatment requirements of different sample solutions. For example, for sample solutions that need to be pumped in by a pump body (peristaltic pump), the sample solution can be pumped in through a pipeline connected to the feed inlet of the upper pressure plate. For sample solutions that can be directly poured in, a liquid collecting funnel is used to pour the sample solution into the sample solution.

[0020] (4) A detachable interface assembly is used at the outlet of the lower tray to facilitate the direct introduction of the filtered sample solution into a container for storage, such as a fermentation bottle or fermentation tank, thereby effectively avoiding sample loss during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the sample solution filtering device in Example 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the explosion structure of the sample solution filtering device in Example 1 of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of a filtering device for a sample solution in Example 2 of the present invention.

[0024] Figure markings: 1. Upper pressure plate; 11. Feed inlet; 12. Positioning hole; 13. Air outlet; 2. Lower tray; 21. Discharge port; 22. Positioning column; 23. Screw-on cover; 24. Mounting hole; 25. Connecting plate; 3. Filter plate; 4. Liquid collecting funnel; 5. Interface assembly; 51. Interface plug; 52. Sealing gasket; 53. Clamp lock. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in conjunction with specific implementation methods.

[0026] Example 1:

[0027] like Figure 1~Figure 2 As shown, the utility model provides a filtering device for a sample solution, comprising a detachably connected upper pressure plate 1 and a lower tray 2, and a filter disc 3 located between the upper pressure plate 1 and the lower tray 2; wherein, the upper pressure plate 1 is provided with an upper filter chamber and an inlet 11 connected to the upper filter chamber, and the lower tray 2 is provided with a lower filter chamber and an outlet 21 connected to the lower filter chamber, and the filter disc 3 is clamped and fixed in the accommodating space formed by the upper filter chamber and the lower filter chamber.

[0028] refer to Figure 2 As shown, the upper filter cavity of the upper pressure plate 1 and the lower filter cavity of the lower tray 2 are both disc-shaped structures with a trapezoidal cross-section. The outer edge of the filter disc 3 is adapted to the inner edges of the upper filter cavity and the lower filter cavity, so that after installation, the edge of the filter disc 3 is tightly abutted against the inner side walls (outer edges) of the upper filter cavity and the lower filter cavity to avoid leakage and loss of the sample solution.

[0029] In this embodiment, the upper and lower end surfaces of the filter disc 3 are both provided with a spiral vortex-shaped mesh structure, and a plurality of spaced filter holes are provided in the middle part of the filter disc 3. The filter holes are staggered and connected with the mesh structures on the upper and lower end surfaces of the filter disc 3 to filter out solid particles in the sample solution.

[0030] Combine Figure 1 and Figure 2As shown, the upper pressure plate 1 is provided with a plurality of positioning holes 12 evenly spaced along the circumferential direction, and the lower tray 2 is provided with a plurality of positioning columns 22 adapted to the positioning holes 12; the positioning columns 22 pass upward through the positioning holes 12 and the ends thereof are provided with screw-on covers 23 threadedly connected thereto, and the screw-on covers 23 are threadedly connected to the positioning columns 22, thereby achieving the tightening of the upper pressure plate 1 and the lower tray 2.

[0031] Furthermore, the upper pressure plate 1 is also provided with an air outlet 13 connected to the upper filter chamber. During the filtration process of some aqueous sample solutions such as tissue culture medium, growth medium, buffer solution, etc., a peristaltic pump is required to pump the sample solution through the feed port 11 into the upper filter chamber to flow through the filter plate 3 for filtration. During this process, the air outlet 13 can be opened to discharge the gas remaining in the upper and lower filter chambers in the initial stage. The air outlet 13 can then be closed by the cover to ensure the normal progress of the filtration process and avoid the loss of the sample solution. It should be noted that the above-mentioned processing process is for explanation only and does not limit the use process and method of use. The air outlet 13 can be opened and closed as needed during the specific filtration process.

[0032] Furthermore, the lower tray 2 is also provided with a plurality of mounting holes 24 evenly spaced along the circumferential direction. Optionally, in some embodiments, the mounting holes 24 are provided with internal threads to facilitate fixing them above the storage container (such as a fermentation tank, etc.) by bolts or studs.

[0033] refer to Figure 2 As shown, the sample solution filtering device in this embodiment also includes an interface component 5 detachably connected to the lower tray 2. The lower tray 2 is provided with a connecting disk 25 connected to the discharge port 21. The interface component 5 is provided with an interface plug 51 sealed with the connecting disk 25. During specific use, the interface plug 51 can be used to achieve a sealed connection with the storage container to avoid leakage and loss of the sample solution and improve convenience of use.

[0034] The interface assembly 5 also includes a sealing gasket 52 arranged between the connecting disk 25 and the interface plug 51, and a clamp lock 53 clamped and fixed to the outer periphery of the connecting disk 25 and the interface plug 51; the sealing gasket 52 ensures the airtight connection between the connecting disk 25 and the interface plug 51 to avoid leakage of the sample solution. The sealing gasket 52 can be a corrosion-resistant soft rubber pad. The clamp lock 53 clamps and fixes the connecting disk 25 and the interface plug 51 so that the lower end surface of the connecting disk 25 is sealed with the upper end surface of the interface plug 51.

[0035] Specifically, the lower end surface of the connecting plate 25 and the upper end surface of the interface plug 51 are both provided with sealing ring grooves, and the sealing gasket 52 is embedded and fixed in the sealing ring grooves to improve the sealing effect; the clamp lock 53 is provided with two movably hinged clamps, and the openings of the two clamps are provided with adjusting bolts threadedly connected thereto. By rotating the adjusting bolts, the clamping degree of the two clamps can be adjusted, and the opening and closing state between the two clamps can be changed.

[0036] Furthermore, the connecting plate 25 and the interface plug 51 are both provided with an outer convex rim, and the clamping pliers are provided with an arc groove adapted to the outer convex rim, and the outer convex rim of the connecting plate 25 and the outer convex rim at the top of the interface plug 51 can both be embedded in the interior of the clamping pliers to improve the stability and reliability of clamping.

[0037] Example 2:

[0038] For Example 2 of the present utility model, Figure 3 Note that, descriptions of parts that are the same as those in Example 1 are omitted and are given the same reference numerals.

[0039] like Figure 3 As shown, the filtering device for sample solution involved in the present invention also includes a liquid collecting funnel 4 detachably connected to the upper pressure plate 1, and the liquid collecting funnel 4 is connected to the upper filter chamber through the feed port 11. For some sample solutions that can be poured and fed, the sample solution can be transported and fed through the liquid collecting funnel 4; for sample solutions that need to be pumped and fed by a peristaltic pump, the liquid collecting funnel 4 can be removed and connected to the peristaltic pump through a pipeline to realize feeding, thereby meeting the filtering processing requirements of different sample solutions.

[0040] Optionally, in some embodiments, the liquid collecting funnel 4 is connected to the upper pressure plate 1 through a threaded structure or a snap-fit ​​structure.

[0041] In summary, the sample solution filtration device provided by the utility model can be used to filter aqueous sample solutions such as buffer solutions, culture media and reagents, and remove particulate matter contained in the solution. The corresponding filter disc can be replaced for different sample solutions, and is suitable for filtering and processing different sample solutions. It has a wide range of applications and strong practicality, and can meet the processing requirements of different sample solutions.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A filtering device for a sample solution, characterized in that: It comprises an upper pressure plate (1) and a lower tray (2) that are detachably connected, and a filter plate (3) located between the upper pressure plate (1) and the lower tray (2); The upper pressure plate (1) is provided with an upper filter cavity and an inlet (11) communicating with the upper filter cavity, the lower tray (2) is provided with a lower filter cavity and an outlet (21) communicating with the lower filter cavity, and the filter plate (3) is clamped and fixed in the accommodation space formed by the upper filter cavity and the lower filter cavity.

2. The sample solution filtering device according to claim 1, wherein: The upper pressure plate (1) is provided with a plurality of positioning holes (12) spaced apart along the circumferential direction, and the lower tray (2) is provided with a plurality of positioning columns (22) adapted to the positioning holes (12); The positioning column (22) passes through the positioning hole (12) upwards and has a screw-on cover (23) at its end that is threadedly connected thereto.

3. The sample solution filtration device according to claim 1, wherein: The upper pressure plate (1) is also provided with an air outlet (13) communicating with the upper filter chamber.

4. The sample solution filtering device according to claim 1, wherein: The lower tray (2) is further provided with a plurality of mounting holes (24) spaced apart along the circumferential direction.

5. The sample solution filtration device according to claim 1, wherein: It also includes a liquid collecting funnel (4) detachably connected to the upper pressure plate (1), and the liquid collecting funnel (4) is connected to the upper filter chamber through the feed port (11).

6. The sample solution filtration device according to claim 1, wherein: It also includes an interface assembly (5) detachably connected to the lower tray (2), the lower tray (2) is provided with a connection plate (25) connected to the discharge port (21), and the interface assembly (5) is provided with an interface plug (51) sealedly connected to the connection plate (25).

7. The sample solution filtration device according to claim 6, wherein: The interface assembly (5) further comprises a sealing gasket (52) arranged between the connection disk (25) and the interface plug (51).

8. The sample solution filtering device according to claim 6, wherein: The interface assembly (5) further comprises a clamp lock (53) fixed to the outer periphery of the connection plate (25) and the interface plug (51), and the clamp lock (53) is provided with two movably connected clamps.

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