Filtering device and experimental equipment

Abstract

The utility model relates to a filtering device and experimental equipment. The filtering device comprises a supporting frame and a filtering module, wherein the filtering module is arranged on the supporting frame; the filtering module comprises a filtering clamping jaw assembly and a pressure regulating module, the filtering clamping jaw assembly comprises a first driving mechanism and a filtering clamping jaw in driving connection with the first driving mechanism, the first driving mechanism is arranged on the supporting frame and used for driving the filtering clamping jaw to clamp a filtering sleeve column, and the filtering sleeve column is used for containing a liquid sample to be filtered; the pressure regulating module is used for being communicated with the filter sleeve column when the filter sleeve column is clamped by the filter clamping jaw and regulating the air pressure in the filter sleeve column so as to filter the liquid sample in the filter sleeve column. The experimental equipment comprises a transfer robot and a filtering device, and the transfer robot is used for transferring materials on the filtering device. According to the scheme provided by the invention, when the liquid sample is filtered, manual operation can be replaced to filter the liquid sample.

Description

Technical Field

[0001] The present application relates to the technical field of automation equipment, and in particular to filtering devices and experimental equipment. Background Art

[0002] In biochemical experiments, it is necessary to filter the liquid samples in the test tube frequently in order to detect and judge the filtered liquid. For liquid samples that need to be filtered, most of the existing filtering methods rely on manual operation. For example, the experimenter uses a syringe to absorb the liquid sample in the test tube, and then pierces the filter head with the syringe to manually filter the liquid sample; or the experimenter directly pours the liquid sample into the filter funnel to filter the liquid sample. However, the above-mentioned manual filtration method not only has low operating efficiency, but also high labor cost. In addition, for some toxic and harmful liquid samples, it is easy to cause damage to the health and safety of the experimenter. Utility Model Content

[0003] In order to solve or partially solve the problems existing in the related art, the present application provides a filtering device and an experimental equipment, which can replace manual filtering of liquid samples when filtering liquid samples, thereby improving filtering efficiency and operational safety.

[0004] A first aspect of the present application provides a filtering device, which includes a support frame and a filtering module, wherein the filtering module is arranged on the support frame; wherein the filtering module includes a filtering jaw assembly and a pressure regulating module; the filtering jaw assembly includes a first driving mechanism and a filtering jaw driven and connected to the first driving mechanism, wherein the first driving mechanism is arranged on the support frame and is used to drive the filtering jaw to clamp a filtering sleeve column, wherein the filtering sleeve column is used to hold a liquid sample to be filtered; the pressure regulating module is used to connect the filtering sleeve column and adjust the air pressure in the filtering sleeve column when the filtering jaw clamps the filtering sleeve column, so as to filter the liquid sample in the filtering sleeve column.

[0005] Furthermore, the filter module further comprises an adapter, which is arranged on the support frame and located above the filter clamp, one end of the adapter is connected to the pressure regulating module, and the other end of the adapter is sealedly connected to the filter sleeve when the filter clamp clamps the filter sleeve;

[0006] The adapter has a first channel, and the first channel is used to connect the filter sleeve column with the pressure regulating module.

[0007] Furthermore, the pressure regulating module includes a positive pressure component and a pressure relief component; one end of the pressure relief component is connected to the first channel, and the other end is connected to the atmospheric environment, and the pressure relief component is used to relieve pressure on the filter sleeve when the adapter is connected to the filter sleeve; one end of the positive pressure component is connected to the first channel, and the other end is connected to the air source, and the positive pressure component is used to pressurize the filter sleeve.

[0008] Furthermore, the pressure regulating module also includes a negative pressure component connected to the first channel, and the negative pressure component is used to form a negative pressure in the filter sleeve column.

[0009] Furthermore, the pressure regulating module further comprises a digital display meter connected to the first channel, and the digital display meter is used to display the air pressure in the filter sleeve column;

[0010] The pressure relief assembly comprises a first switch valve, one end of which is in communication with the first channel, and the other end of which is in communication with the atmosphere;

[0011] The positive pressure assembly includes a second switch valve and a proportional valve, one end of the second switch valve is connected to the first channel, and the other end is connected to one end of the proportional valve, and the other end of the proportional valve is connected to a nitrogen source.

[0012] Furthermore, the filtration module further comprises a liquid adding mechanism, one end of which is connected to the solvent bottle, and the other end of which is connected to the adapter, and the liquid adding mechanism is used to transport liquid into the filter sleeve column;

[0013] The adapter also has a second channel, and the second channel is used to connect the filter sleeve column with the liquid adding mechanism.

[0014] Furthermore, the filter module also includes a first lifting mechanism, which is disposed on the support frame, and the adapter is drivingly connected to the first lifting mechanism, and the first lifting mechanism is used to drive the adapter to move closer to or away from the filter clamp.

[0015] Furthermore, the filtering device further comprises a liquid collecting bottle, the liquid collecting bottle is located below the filtering clamping jaws, and the liquid collecting bottle is used to receive the filtered liquid.

[0016] Furthermore, the filtering device also includes a second lifting mechanism, which is arranged on the supporting frame, and the filtering module is drivingly connected to the second lifting mechanism, and the second lifting mechanism is used to drive the filtering module to rise and fall so that the filtering claw is close to or away from the liquid collecting bottle.

[0017] Furthermore, the filtering device further comprises a base and a placement rack located on the base, the placement rack is provided with at least one first placement position, and the first placement position is used to place the liquid collecting bottle;

[0018] The filtering device also includes a first translation mechanism and / or a second translation mechanism, the base is arranged on the first translation mechanism, the first translation mechanism is used to drive the base to move along a first direction so that the liquid collecting bottle on the placement rack is close to or away from the filtering claw; the second translation mechanism is arranged on the support frame and connected to the filtering module, the second translation mechanism is used to drive the filtering module to move along a second direction so that the filtering claw is close to or away from the liquid collecting bottle; wherein, the first direction is parallel or perpendicular to the second direction.

[0019] Furthermore, the filtering device further comprises a fixed clamping assembly, which is arranged on the base;

[0020] The fixed clamping assembly comprises a second driving mechanism and a fixed clamping jaw drivingly connected to the second driving mechanism, wherein the second driving mechanism is used to drive the fixed clamping jaw to clamp the filter sleeve column, so that the filter clamping jaw clamps the filter sleeve column on the fixed clamping jaw.

[0021] Furthermore, the filter module further comprises a filter sleeve, the filter sleeve comprises a first tube body and a second tube body which are interconnected, the first tube body is provided with a first opening at one end away from the second tube body, the first opening is used to communicate with the pressure regulating module; the second tube body is provided with a second opening at one end away from the first tube body, the second opening is used to output the filtered liquid; the filter clamp clamps the first tube body;

[0022] Wherein, the inner diameter of the first tube body is greater than the inner diameter of the second tube body.

[0023] Furthermore, the filter sleeve column also includes a filter element, which is located in the first tube body and is arranged close to one end of the second tube body, and the filter element is used to filter the liquid sample in the first tube body.

[0024] Furthermore, the filter sleeve column also includes a plug detachably connected to an end of the second tube body away from the first tube body, and the plug is used to block the second opening before filtering.

[0025] Furthermore, the filtering device also includes an unloading member located below the filtering clamping claw, and the unloading member is used to separate the plug from the second tube body.

[0026] Furthermore, the filtering device further comprises a base and a placement rack located on the base, the placement rack is provided with at least one first placement position and at least one second placement position, the first placement position is used to place the liquid collection bottle, and the second placement position is used to place the filter head;

[0027] After the unloading member removes the plug, the filter clamp drives the filter sleeve column to pierce the filter head.

[0028] Furthermore, the filtering device further comprises a recovery component, which is arranged on the base, and the unloading member is located above the recovery component;

[0029] The filtering device further comprises a detector, which is arranged on the base, and the detector is used to detect whether the filter sleeve column has penetrated the filter head.

[0030] Furthermore, the filtering device further comprises a base and a fixed clamping assembly arranged on the base; the fixed clamping assembly comprises a second driving mechanism and a fixed clamping claw drivingly connected to the second driving mechanism, and the second driving mechanism is used to drive the fixed clamping claw to clamp the first tube body;

[0031] The filter sleeve column further includes a blocking member, which blocks the first opening; the filter clamp is used to clamp the blocking member and separate the blocking member from the first tube body.

[0032] Furthermore, there are a plurality of filter modules, and the plurality of filter modules are arranged on the support frame at intervals along the horizontal direction.

[0033] A second aspect of the present application provides an experimental device, which includes a handling robot and any one of the above-mentioned filtering devices, wherein the handling robot is used to transfer materials on the filtering device.

[0034] The technical solution provided by the present application may include the following beneficial effects: by setting a filter clamp to clamp the filter sleeve, when the liquid sample in the filter sleeve needs to be filtered, the air pressure in the filter sleeve is adjusted by the pressure regulating module, so that the liquid sample in the inner cavity can be filtered through the external filter element or the filter element inside the tube body, without manual operation, realizing the automation of the filtering operation, which not only reduces the workload of the experimenter, but also improves the filtering efficiency. In addition, it also avoids the experimenter from directly contacting the liquid sample, ensuring the health and safety of the experimenter.

[0035] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0037] Figure 1 is a schematic diagram of the structure of a filtering device shown in an embodiment of the present application;

[0038] Figure 2 is another structural schematic diagram of the filtering device shown in the embodiment of the present application;

[0039] Figure 3 is a schematic diagram of the structure of the filter module shown in the embodiment of the present application;

[0040] Figure 4 It is a schematic diagram of the structure of the filter sleeve column shown in the embodiment of the present application;

[0041] Figure 5 is a cross-sectional view of a filter sleeve column shown in an embodiment of the present application;

[0042] Figure 6 It is a structural schematic diagram of a placement rack shown in an embodiment of the present application;

[0043] Figure 7 It is a structural block diagram of the voltage regulation module shown in the embodiment of the present application.

[0044] Figure numerals: support frame 1; filter module 2; filter clamp 21; digital display 221; adapter 23; first channel 231; first lifting mechanism 24; first switch valve 25; second switch valve 26; proportional valve 27; nitrogen source 28; first drive mechanism 29; liquid collecting bottle 3; second lifting mechanism 4; base 5; placement rack 6; first placement position 61; second placement position 62; first translation mechanism 7; second translation mechanism 8; fixed clamp 9; second drive mechanism 91; recovery component 10; recovery box 11; waste liquid pool 12; cache box 13; filter sleeve 100; first tube body 101; first opening 1011; second tube body 102; second opening 1021; plug 103; filter head 200; unloading piece 300; detector 400; atmospheric environment 500. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0046] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0047] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The embodiment of the present application provides a filtering device, which can replace manual filtering of liquid samples when filtering liquid samples, thereby improving filtering efficiency and operational safety.

[0050] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0051] See also Figures 1 to 3 The filtering device includes a support frame 1 and a filtering module 2, and the filtering module 2 is arranged on the support frame 1. The filtering module 2 includes a filtering jaw assembly and a pressure regulating module. The filtering jaw assembly includes a first driving mechanism 29 and a filtering jaw 21 drivingly connected to the first driving mechanism 29, and the first driving mechanism 29 is arranged on the support frame 1. The first driving mechanism 29 is used to drive the filtering jaw 21 to clamp the filtering sleeve 100, and the filtering sleeve 100 is used to contain the liquid sample to be filtered. The pressure regulating module is used to connect the filtering sleeve 100 and adjust the air pressure in the filtering sleeve 100 when the filtering jaw 21 clamps the filtering sleeve 100, so as to filter the liquid sample in the filtering sleeve 100.

[0052] In the embodiment of the present application, the specific structure of the first driving mechanism 29 is not limited. For example, the first driving mechanism 29 can be a driving mechanism such as a motor or a cylinder. The filter clamp 21 can be two or more clamping blocks, each of which has a clamping surface for clamping the filter sleeve 100. The clamping surface can be a plane, a curved surface, or a combination of a plane and a plane, a plane and a curved surface, or a curved surface and a curved surface, etc., which are not limited here. Elastic parts (such as rubber pads, silicone pads, etc.) and / or anti-slip parts (such as granular, toothed, etc.) can also be arranged on the clamping surface. By arranging the elastic parts, the filter clamp 21 can be prevented from rigidly colliding with the filter sleeve 100, thereby protecting the filter sleeve 100; by arranging the anti-slip parts, the friction between the filter clamp 21 and the filter sleeve 100 can be increased to prevent the filter sleeve 100 from falling. The first driving mechanism 29 is connected to each clamping block of the filter clamp 21 to drive each clamping block to move closer to or away from each other. The support frame 1 supports the filter module 2 . The support frame 1 may be a flat plate or a gantry frame, etc., which is not limited here.

[0053] In the embodiment of the present application, the specific structure of the filter sleeve 100 is not limited, and the filter sleeve commonly used in the market can be used. In one example, the filter sleeve 100 is provided with an inner cavity, and the inner cavity can hold the liquid sample to be filtered. The filter sleeve 100 is provided with an inlet and an outlet, both of which are connected to the inner cavity. The liquid sample in the inner cavity flows in through the inlet and flows out of the filter sleeve 100 through the outlet. When the filter clamp 21 clamps the filter sleeve 100, the pressure regulating module can be connected to the filter sleeve 100 and can adjust the air pressure in the filter sleeve 100. When it is necessary to filter the liquid sample in the filter sleeve 100, a filter element can be set inside or outside the filter sleeve 100. The pressure regulating module adjusts the air pressure in the filter sleeve 100 so that the liquid sample in the filter sleeve 100 passes through the filter element set inside or outside the filter sleeve 100 under the action of the air pressure, thereby filtering the liquid sample in the filter sleeve 100. The pressure regulating module may be communicated with the inlet of the filter sleeve 100 or with the side wall of the filter sleeve 100, which is not limited here.

[0054] The present application provides a filter clamp 21 to clamp the filter sleeve 100. When the liquid sample in the filter sleeve 100 needs to be filtered, the pressure regulating module adjusts the air pressure in the filter sleeve 100 so that the liquid sample in the inner cavity can be filtered through the external filter element or the filter element inside the tube body, thereby realizing the automation of the filtering operation, which not only reduces the workload of the experimenter, but also improves the filtering efficiency. In addition, it also avoids the experimenter from directly contacting the liquid sample, ensuring the health and safety of the experimenter.

[0055] See also Figure 2 , Figure 3 and Figure 7The filter module 2 also includes an adapter 23, which is arranged on the support frame 1 and located above the filter clamp 21. One end of the adapter 23 is connected to the pressure regulating module, and the other end of the adapter 23 can be sealed and connected to the filter sleeve 100. The adapter 23 has a first channel 231, and the first channel 231 is used to connect the filter sleeve 100 and the pressure regulating module. Among them, the first channel 231 is opened at two opposite ends of the adapter 23, one end of the first channel 231 is connected to the pressure regulating module, and the other end is connected to the filter sleeve 100. The adapter 23 and the filter sleeve 100 can be sealed by elastic abutment, interference connection, etc.

[0056] When the filter clamp 21 clamps the filter sleeve 100, in order to ensure that the pressure regulating module can adjust the air pressure in the filter sleeve 100, the adapter 23 can be docked with the inlet of the filter sleeve 100, so that the adapter 23 and the filter sleeve 100 are sealed and connected. When the pressure regulating module adjusts the air pressure in the filter sleeve 100, the gas will not leak from the inlet. The pressure regulating module can supply or extract air into the filter sleeve 100 through the first channel 231, and finally the liquid sample in the filter sleeve 100 can flow out of the filter sleeve 100 to complete the filtration of the liquid sample.

[0057] See also Figure 7 In the embodiment of the present application, the pressure regulating module includes a positive pressure component, one end of the positive pressure component is connected to the first channel 231, and the other end of the positive pressure component is connected to the gas source, and the positive pressure component is used to pressurize the filter sleeve 100. The filter sleeve 100 is pressurized by the positive pressure component to increase the gas pressure in the filter sleeve 100, so that the liquid sample in the filter sleeve 100 can flow out under the action of pressure. Among them, the gas source connected to the positive pressure component can be an inert gas such as nitrogen or helium that cannot react with the liquid sample.

[0058] In some embodiments, the pressure regulating module further includes a pressure relief assembly, one end of which is connected to the first channel 231, and the other end of which is connected to the atmospheric environment 500. When the adapter 23 is connected to the filter sleeve 100, the pressure relief assembly can relieve pressure on the filter sleeve 100. Specifically, during the docking process between the adapter 23 and the filter sleeve 100, the adapter 23 gradually extends into the filter sleeve 100, so that the gas in the inner cavity of the filter sleeve 100 is compressed and the air pressure in the inner cavity increases. In order to prevent the increase in the air pressure in the inner cavity and cause the liquid sample to flow out prematurely before the filtration preparation work is completed, the pressure relief assembly is opened while the adapter 23 and the filter sleeve 100 are docked. The inner cavity is relieved of pressure by the pressure relief assembly, so that when the adapter 23 and the filter sleeve 100 are docked, the air pressure in the inner cavity is always at the level of the external environment air pressure.

[0059] See also Figure 2 , Figure 4 and Figure 5The filter module 2 also includes a filter sleeve 100, which includes a first tube body 101 and a second tube body 102 that are connected to each other. The first tube body 101 and the second tube body 102 both have an inner cavity, and the inner cavities of the two are connected. A first opening 1011 is provided at one end of the first tube body 101 away from the second tube body 102, and the first opening 1011 is used to communicate with the pressure regulating module. A second opening 1021 is provided at one end of the second tube body 102 away from the first tube body 101, and the second opening 1021 is used to output the filtered liquid. The filter clamp 21 can be clamping the first tube body 101 when clamping the filter sleeve 100. Among them, the first opening 1011 is the inlet of the aforementioned filter sleeve 100, and the second opening 1021 is the outlet of the aforementioned filter sleeve 100. In some embodiments, the inner diameter of the first tube body 101 is larger than the inner diameter of the second tube body 102, so that the first tube body 101 can be loaded with more liquid samples, and the smaller inner diameter of the second tube body 102 can limit the flow rate of the liquid sample when it flows out from the second opening 1021. The filter sleeve 100 can be used by arranging a filter element in the inner cavity and / or connecting a filter head at the second opening 1021.

[0060] See also Figure 4 and Figure 5 , the filter sleeve 100 also includes a plug 103, which is detachably connected to an end of the second tube body 102 away from the first tube body 101. Specifically, the plug 103 can be screwed to the second tube body 102 by threads, the plug 103 can also be fixed to the second tube body 102 by interference fit, or the plug 103 can be adsorbed to the second tube body 102 by magnetic attraction, which is not limited here. The plug 103 is used to block the second opening 1021 before filtering to prevent the liquid sample in the inner cavity from flowing out of the second opening 1021 in advance. In some embodiments, when the filter sleeve 100 is in use, the first tube body 101 and the second tube body 102 extend in a vertical direction, the first opening 1011 is at the top of the first tube body 101, and the second opening 1021 is at the bottom of the second tube body 102.

[0061] See also Figure 2 and Figure 4The filter device further includes an unloading member 300, which is located below the filter clamp 21 and is used to separate the second tube 102 from the plug 103. If the plug 103 is threadedly connected to the second tube 102, the unloading member 300 is clamped or clamped to fix the plug 103, the filter clamp 21 clamps the first tube 101, the filter clamp 21 drives the first tube 101 to rotate or the unloading member 300 drives the plug 103 to rotate, so that the plug 103 is separated from the second tube 102; if the plug 103 is fixed to the second tube 102 by interference fit or magnetic attraction, the unloading member 300 is clamped or clamped to fix the plug 103, the filter clamp 21 clamps the first tube 101, the filter clamp 21 drives the first tube 101 to rise or the unloading member 300 drives the plug 103 to fall, so that the plug 103 is separated from the second tube 102.

[0062] In some embodiments, see Figure 3 and Figure 4 The pressure regulating module further includes a negative pressure component, which is in communication with the first channel 231 and is used to form a negative pressure in the filter sleeve 100. When the adapter 23 is docked with the filter sleeve 100, the pressure relief component keeps the air pressure in the inner cavity at the level of the external environment pressure. After the adapter 23 is completely and tightly connected with the filter sleeve 100, the pressure relief component is closed and the negative pressure component is opened, and the negative pressure component forms a negative pressure in the inner cavity.

[0063] In one example, when the filter sleeve 100 is not provided with the plug 103, after the negative pressure component forms a negative pressure in the inner cavity, the gas of the external environment can enter the inner cavity from the second opening 1021, and the gas pushes the liquid in the inner cavity upward, so that the liquid in the inner cavity rises. At this time, the negative pressure formed by the negative pressure component can prevent the liquid sample in the inner cavity from flowing out of the filter sleeve 100 in advance due to gravity. When the liquid rises to a suitable height or the filtration preparation is completed, the negative pressure component is turned off, and the positive pressure component is started to pressurize the inner cavity. The liquid in the inner cavity flows out of the filter sleeve 100 under the action of gas pressure to achieve the filtering operation of the liquid in the filter sleeve 100.

[0064] In another example, when the plug 103 is provided at the end of the filter sleeve 100, a negative pressure component is provided to form a negative pressure in the inner cavity before the plug 103 is unloaded, so that the liquid in the inner cavity can be prevented from splashing or dripping when the plug 103 is unloaded, causing waste of liquid samples and pollution to the experimental environment. After the plug 103 is unloaded, the negative pressure component is turned off, and the positive pressure component is started to pressurize the inner cavity, and the liquid in the inner cavity flows out of the filter sleeve 100 under the action of air pressure, so as to achieve the filtering operation of the liquid in the filter sleeve 100.

[0065] Among them, the negative pressure component may include a vacuum generator or a diaphragm pump or a plunger pump. Furthermore, the negative pressure component may also include a pressure regulating valve and a throttle valve, which are used in conjunction with the vacuum generator, the diaphragm pump or the plunger pump. The pressure value in the filter sleeve 100 can be adjusted by the pressure regulating valve, and the gas flow rate can be adjusted by the throttle valve. In one example, the negative pressure component includes a vacuum generator, a pressure regulating valve and a throttle valve connected in sequence, wherein the throttle valve is connected to the first channel 231 of the adapter 23. It can be understood that the connection order of the pressure regulating valve and the throttle valve can be interchanged.

[0066] See also Figure 7 The pressure regulating module also includes a digital display 221, which is connected to the first channel 231. The digital display 221 is used to display the air pressure in the filter sleeve 100, so that the experimenter can understand the air pressure in the filter sleeve 100 in a timely and intuitive manner.

[0067] In some embodiments, the pressure relief assembly includes a first switch valve 25, one end of which is connected to the first channel 231, and the other end of the first switch valve 25 is connected to the atmospheric environment 500. During the docking process between the adapter 23 and the filter sleeve 100, the first switch valve 25 is opened, and the gas in the filter sleeve 100 flows to the first switch valve 25 through the first channel 231 due to being squeezed, and then discharged from the first switch valve 25 to the atmospheric environment 500, so that the air pressure in the filter sleeve 100 and the atmospheric pressure are balanced. After the adapter 23 is docked with the filter sleeve 100, the first switch valve 25 is closed. The first switch valve 25 can be a solenoid valve, a ball valve, a butterfly valve, a gate valve, a stop valve, etc., which are not limited here.

[0068] See also Figure 7 In some embodiments, the positive pressure assembly includes a second switch valve 26 and a proportional valve 27, one end of the second switch valve 26 is connected to the first channel 231, the other end of the second switch valve 26 is connected to one end of the proportional valve 27, and the other end of the proportional valve 27 is connected to the nitrogen source 28. When the positive pressure assembly is required to pressurize the inner cavity, the second switch valve 26 is opened, the proportional valve 27 is opened, and the nitrogen source 28 passes a certain amount of nitrogen into the inner cavity through the proportional valve 27 and the second switch valve 26, so that the air pressure in the inner cavity becomes larger, and then the liquid in the inner cavity is squeezed out of the filter sleeve 100. Among them, the proportional valve 27 can be a flow proportional valve, which can adjust the nitrogen flow rate according to the volume of the filter sleeve 100, while ensuring that the liquid in the inner cavity can be flushed out, saving nitrogen and reducing costs. The proportional valve 27 can also be an air pressure proportional valve, which can control the air pressure input to the filter sleeve 100, so as to adjust the flow rate during liquid filtration. The second switch valve 26 is the same as or similar to the first switch valve 25 , and may also be a solenoid valve, a ball valve, a butterfly valve, a gate valve, a stop valve, etc., which is not limited here.

[0069] See also Figure 2-4 The filtering device further includes a liquid adding mechanism, one end of which is connected to the solvent bottle, and the other end of which is connected to the adapter 23. The liquid adding mechanism is connected to the filter sleeve 100 through the adapter 23, and the liquid adding mechanism is used to transport liquid into the filter sleeve 100. The adapter 23 also has a second channel, which is used to connect the filter sleeve 100 with the liquid adding mechanism, and the second channel and the first channel 231 are independent of each other.

[0070] In one example, when the liquid adding mechanism is used to transport the liquid sample into the empty filter sleeve 100, the filter jaws 21 clamp the empty filter sleeve 100, and after the adapter 23 is successfully docked with the filter sleeve 100, the liquid adding mechanism is started to inject the liquid sample to be filtered into the filter sleeve 100. After that, the negative pressure component is started to form a negative pressure in the filter sleeve 100 to unload the plug 103, and then the positive pressure component is started to filter the liquid sample in the filter sleeve 100.

[0071] In another example, if the liquid sample in the filter sleeve 100 needs to be filtered multiple times to avoid liquid sample residue, after completing one filtration, a specified liquid can be injected into the filter sleeve 100 using a liquid adding mechanism, and filtering can be performed again, and this process is repeated until the filtration is completed. It can be understood that the liquid sample to be filtered in the filter sleeve 100 can be added manually, added using a pipette, or injected using the liquid adding mechanism, which is not limited here.

[0072] The specific structure of the liquid adding mechanism is not limited, and a common liquid adding mechanism currently available on the market can be used. In one example, the liquid adding mechanism includes a plunger pump and a multi-way solenoid valve, wherein the multi-way solenoid valve has multiple interfaces, one interface is used to connect to a solvent bottle (if there are multiple solvent bottles containing different liquids, one solvent bottle is connected to one interface, and different solvent bottles are connected to different interfaces), one interface is used to connect to the plunger pump, and one interface is used to connect to the adapter 23.

[0073] In some embodiments, the negative pressure component and the liquid adding mechanism can be regarded as the same mechanism. Since the liquid adding mechanism uses a plunger pump, the liquid adding mechanism can be used to directly absorb negative pressure. The liquid adding mechanism reversely absorbs liquid through the plunger pump, thereby forming negative pressure in the inner cavity.

[0074] See also Figure 1-4The filter module 2 further includes a first lifting mechanism 24, which is disposed on the support frame 1. The adapter 23 is drivingly connected to the first lifting mechanism 24, and the first lifting mechanism 24 is used to drive the adapter 23 to move closer to or farther from the filter clamp 21. Specifically, the first lifting mechanism 24 can drive the adapter 23 to move up and down above the filter clamp 21, so that the adapter 23 can be combined with the filter sleeve 100 on the filter clamp 21 after it approaches the filter clamp 21. The specific structure of the first lifting mechanism 24 is not limited. For example, the first lifting mechanism 24 can be a combination of a screw motor and a guide member (such as a guide rail, a guide rod, etc.).

[0075] See also Figure 2 The filtering device further includes a liquid collecting bottle 3, which is located below the filtering jaws 21 and is used to receive the filtered liquid. When it is necessary to filter the liquid sample in the filter sleeve 100, a filter element can be arranged in the inner cavity, at the second opening 1021, or outside the filter sleeve 100, so that the liquid sample in the filter sleeve 100 flows through the filter element, and the liquid sample is filtered by the filter element, and then the liquid obtained after filtration is received by the liquid collecting bottle 3. The liquid collecting bottle 3 can be a container such as a test tube, a centrifuge tube, or a solvent bottle.

[0076] See also Figure 1-3 The filtering device further includes a second lifting mechanism 4, which is disposed on the support frame 1, and the filtering module 2 is drivingly connected to the second lifting mechanism 4. The second lifting mechanism 4 is used to drive the filtering module 2 to move up and down, ensuring that the filtering jaws 21 can approach or move away from the liquid collecting bottle 3, so that when the filtering jaws 21 drive the filtering sleeve 100 to approach the liquid collecting bottle 3, the filtered liquid can accurately flow into the liquid collecting bottle 3. The specific structure of the second lifting mechanism 4 is not limited, for example, the second lifting mechanism 4 can be a combination of a screw motor and a guide member (such as a guide rail, a guide rod, etc.).

[0077] See also Figure 1 and Figure 2 In some embodiments, the filtering device further includes a base 5 and a placement rack 6 located on the base 5 , the placement rack 6 is provided with at least one first placement position 61 , and the first placement position 61 is used to place the liquid collection bottle 3 .

[0078] See also Figure 1 and Figure 2In some embodiments, the filter device further comprises a first translation mechanism 7 and a second translation mechanism 8. In some embodiments, the filter device further comprises a first translation mechanism 7 or a second translation mechanism 8. The base 5 is arranged on the first translation mechanism 7, and the first translation mechanism 7 is used to drive the base 5 to move along the first direction. The first translation mechanism 7 can be arranged on the support frame 1 or on a working platform for placing the filter device. When the base 5 moves along the first direction, the placement frame 6 also moves along the first direction, and the liquid collecting bottle 3 also moves along the first direction, so that the first translation mechanism 7 can control the liquid collecting bottle 3 on the placement frame 6 to approach or move away from the filtering jaws 21. The second translation mechanism 8 is arranged on the support frame 1 and connected to the filtering module 2. The second translation mechanism 8 is used to drive the filtering module 2 to move along the second direction. When the filtering module 2 moves along the second direction, the filtering jaws 21 move along the second direction, so that the filtering jaws 21 can approach or move away from the liquid collecting bottle 3, so as to drive the filtering sleeve 100 to approach or move away from the liquid collecting bottle 3. Wherein, when the filtering device includes the first translation mechanism 7 and the second translation mechanism 8, the first direction is parallel or perpendicular to the second direction. When the first direction is perpendicular to the second direction, the first direction can be Figure 1 The x-axis direction shown, the second direction can be Figure 1 In the y-axis direction shown in FIG. Figure 1 The first translation mechanism 7 and the second translation mechanism 8 are shown in Figure 1, and the second lifting mechanism 4 drives the filter module 2 to move in the z-axis direction. When the first direction is parallel to the second direction, the first direction and the second direction can both be the x-axis direction, or the first direction and the second direction can both be the y-axis direction. The structures of the first translation mechanism 7 and the second translation mechanism 8 can be the same or similar, and their specific structures are not limited. For example, the first translation mechanism 7 and the second translation mechanism 8 are both a combination of a screw motor and a guide member (such as a guide rail, a guide rod, etc.).

[0079] See also Figure 1 and Figure 2The filtering device also includes a fixed clamping assembly, which is arranged on the base 5. When the base 5 moves along the first direction, the fixed clamping assembly also moves along the first direction. The fixed clamping assembly includes a second driving mechanism 91 and a fixed clamping jaw 9 connected to the second driving mechanism 91. The second driving mechanism 91 can drive the fixed clamping jaw 9 to close or open, so that the fixed clamping jaw 9 can clamp and fix the filter sleeve 100, or release the clamped filter sleeve 100. Among them, the filter sleeve 100 can be moved to the fixed clamping jaw 9 by hand or an external robot, and the filter sleeve 100 is clamped by the fixed clamping jaw 9. The fixed clamping assembly cooperates with the first translation mechanism 7 to deliver the filter sleeve 100 to the filter clamping jaw 21. Among them, the specific structure of the second driving mechanism 91 is not limited. For example, the second driving mechanism 91 can be a driving mechanism such as a motor or a cylinder. The structure of the fixed clamping jaw 9 can be the same or similar to that of the filter clamping jaw 21, which is not limited here. When it is inconvenient for the filter jaws 21 to directly clamp the filter sleeve 100 , by providing a fixed clamping assembly, the filter sleeve 100 can be first fixed to the fixed jaws 9 and then clamped by the filter jaws 21 .

[0080] In one embodiment, the filter sleeve 100 further includes a filter element, which is used to filter the liquid sample in the first tube body 101. The filter element is located in the first tube body 101, and specifically, the filter element is located in the first tube body 101 and is arranged near one end of the second tube body 102. When the positive pressure component applies positive pressure to the filter sleeve 100, the liquid sample in the filter sleeve 100 will be filtered by the filter element and then flow to the liquid collection bottle 3 from the second opening 1021. The specific structure and composition of the filter element are not limited, for example, the filter element can be composed of diatomaceous earth or silica gel.

[0081] It is understandable that the filter sleeve 100 can be provided with both the filter element and the plug 103, or only the filter element or the plug 103. When only the plug 103 is provided, the filter sleeve 100 can be used in combination with the filter head 200. In addition, when the filter sleeve 100 is provided with the filter element, it can also be used in combination with the filter head 200 to improve the filtering effect.

[0082] See also Figure 2-6In one embodiment, the placement rack 6 is provided with at least one first placement position 61 and at least one second placement position 62, wherein the first placement position 61 is used to place the liquid collection bottle 3, and the second placement position 62 is used to place the filter head 200. After the unloading member 300 removes the plug 103, the filter clamp 21 can drive the filter sleeve 100 to pierce the filter head 200. When no filter element is provided in the first tube body 101, after the plug 103 is unloaded, the placement rack 6 is moved to the bottom of the filter clamp 21 so that the second opening 1021 is aligned with one of the filter heads 200, and the second lifting mechanism 4 drives the filter clamp 21 to descend, and the filter sleeve 100 on the filter clamp 21 is lowered accordingly, until the bottom end of the second tube body 102 is stuck on the filter head 200, so that the second tube body 102 and the filter head 200 are fixed together, and then the second lifting mechanism 4 drives the filter sleeve 100 and the filter head 200 to rise, and the liquid collecting bottle 3 is moved above the filter head 200 or the filter head 200 is moved above the liquid collecting bottle 3, and the positive pressure component pressurizes the inner cavity so that the liquid sample in the inner cavity is filtered by the filter head 200 and then falls into the liquid collecting bottle 3. Among them, the arrangement positions of the first placement position 61 and the second placement position 62 are not limited, and both can be arranged in an array. The first placement position 61 and the second placement position 62 can be Figure 6 The cross setting shown can make the placement rack 6 bear the load evenly; the first placement position 61 and the second placement position 62 can also be set in different areas, such as setting the first placement position 61 on the left side of the placement rack 6 and setting the second placement position 62 on the right side of the placement rack 6, which is convenient for taking and placing materials.

[0083] See also Figure 1 and Figure 2 The filtering device also includes a recovery component 10, which is arranged on the base 5. The recovery component 10 moves with the base 5, and the unloading member 300 is located above the recovery component 10. The first translation mechanism 7 can drive the recovery component 10 to move below the filter clamp 21, and the recovery component 10 can recover experimental consumables and waste materials such as the filter sleeve 100, the filter head 200 and the plug 103. The recovery component 10 may include but is not limited to a consumable recovery box 11, a waste liquid pool 12, a buffer box 13, etc. Among them, the consumable recovery box 11 is used to recover experimental consumables such as the filter sleeve 100, the filter head 200 and the plug 103. The waste liquid pool 12 is used for the liquid adding mechanism to discharge waste liquid. For example, when the solvent is replaced, the waste liquid of the cleaning pipeline is discharged to the waste liquid pool 12 via the adapter 23. The buffer box 13 is used to temporarily store a faulty filter sleeve 100. For example, if the filter sleeve 100 is blocked and cannot filter normally, by temporarily storing the faulty filter sleeve 100, the experimenter can deal with the fault in time or remove the liquid sample inside to avoid waste of liquid samples.

[0084] In some embodiments, the filtering device further includes a detector 400, which is disposed on the base 5, and the detector 400 is used to detect whether the filter sleeve 100 has pierced the filter head 200. When it is necessary to filter the liquid sample in the filter sleeve 100, the unloading member 300 separates the plug 103 from the second tube body 102, and the filter clamp 21 drives the filter sleeve 100 to pierce the filter head 200. Then, the detector 400 is used to detect whether the filter sleeve 100 has successfully pierced the filter head 200. If the filter sleeve 100 correctly pierces the filter head 200, the pressure regulating module pressurizes the inner cavity so that the liquid sample in the inner cavity is filtered by the filter head 200 and falls into the liquid collection bottle 3; if the filter sleeve 100 does not pierce the filter head 200 or the filter head 200 is pierced crookedly, the filter head 200 is re-pierced or an alarm is issued to notify the experimenter to handle it. Among them, the detector 400 may include but is not limited to sensors (such as laser sensors, infrared sensors, etc.), cameras, etc.

[0085] In some embodiments, for liquid samples that are easily volatile or oxidizable, the filter sleeve 100 further includes a blocking member, which blocks the first opening 1011. Before the liquid sample in the filter sleeve 100 is filtered, the blocking member can prevent the liquid sample from contacting with air, thereby preventing the liquid sample from oxidizing or volatilizing. The blocking member can be regarded as a cover of the filter sleeve 100, which is sealed to the first opening 1011. In one example, the fixed jaw 9 is first located at a side away from the filter jaw 21. After the fixed jaw 9 clamps the first tube body 101, the first translation mechanism 7 drives the fixed jaw 9 to approach the filter jaw 21, so that the filter jaw 21 can clamp the blocking element; then the second lifting mechanism 4 drives the filter jaw 21 to rise, and the blocking element is separated from the first tube body 101; the first translation mechanism 7 then drives the recovery component 10 to move below the filter jaw 21, the filter jaw 21 releases the blocking element, and the blocking element falls into the recovery component 10; the first translation mechanism 7 then drives the fixed jaw 9 to move below the filter jaw 21, so that the filter jaw 21 can clamp the first tube body 101, the fixed jaw 9 releases the first tube body 101, and the first translation mechanism 7 then drives the fixed jaw 9 to leave the filter jaw 21 and the first tube body 101, and the filter jaw 21 cooperates with the pressure regulating module to filter the liquid sample in the inner cavity. With such a design, the first tube body 101 and the blocking element can be separated by automation, saving manpower and improving experimental efficiency. In some embodiments, for a liquid sample with stable properties, the filter cartridge 100 may not include a barrier.

[0086] In some embodiments, Figure 1-3As shown, there can be multiple filter modules 2, and multiple filter modules 2 are arranged at intervals in the horizontal direction on the support frame 1. Each filter module 2 can filter the liquid sample in a filter sleeve 100, and multiple filter modules 2 can operate on multiple filter sleeves 100 at the same time, so that the filter device can filter multiple liquid samples at the same time, greatly improving the experimental flux and further improving the filtering efficiency. In addition, multiple fixed clamping assemblies can also be set, and multiple fixed clamps 9 can cooperate with multiple filter clamps 21 to realize the synchronous transfer of multiple filter sleeves 100.

[0087] See also Figure 1-5In the operation process of one of the embodiments, the experimenter or the handling robot first moves the filter sleeve 100 to the fixed jaw 9. After the fixed jaw 9 clamps the first tube 101, the first translation mechanism 7 drives the fixed jaw 9 to move to the filter jaw 21, and the filter jaw 21 clamps the blocking member; then the second lifting mechanism 4 drives the filter jaw 21 to rise, and the blocking member is pulled out from the first tube 101; the first translation mechanism 7 drives the fixed jaw 9 to move along the x-axis direction, so that the first tube 101 is away from the filter jaw 21, and the recovery component 10 moves along the x-axis direction until the recovery component 10 is directly below the filter clamp 21; the filter clamp 21 releases the blocking piece, and the blocking piece falls into the recovery assembly 10; the first translation mechanism 7 drives the fixed clamp 9 to move to the bottom of the filter clamp 21, and the filter clamp 21 clamps the first tube body 101, and at the same time, the fixed clamp 9 releases the first tube body 101 and moves away; the first lifting mechanism 24 controls the adapter 23 to descend along the z-axis, so that the adapter 23 can dock with the first opening 1011; in the process of the adapter 23 docking with the first opening 1011, the pressure relief assembly is started and the inner cavity is depressurized, so that the pressure of the inner cavity is the same as the pressure of the atmospheric environment 500; After the pressure relief is completed, the pressure relief component is closed; the negative pressure component is started to reduce the pressure in the inner cavity, and the first translation mechanism 7 moves the unloading member 300 to the bottom of the filter clamp 21, and the second lifting mechanism 4 drives the filter clamp 21 to descend. After the unloading member 300 is engaged with the plug 103, the second lifting mechanism 4 drives the filter clamp 21 to rise, so that the plug 103 is separated from the first tube body 101, and the plug 103 falls into the recovery component 10; the first translation mechanism 7 drives the placement frame 6 to move to the bottom of the filter clamp 21, and the second translation mechanism 8 drives the filter clamp 21 to move along the y-axis direction, so that the second The opening 1021 is directly opposite to one of the filter heads 200, and the second lifting mechanism 4 controls the filter jaws 21 to descend until the bottom end of the second tube body 102 is tightly tied to the filter head 200, and the filter head 200 is installed at the second opening 1021; the second lifting mechanism 4 controls the filter jaws 21 to rise, and the second translation mechanism 8 drives the filter jaws 21 to move, so that the filter head 200 on the filter sleeve 100 is aligned with one of the liquid collection bottles 3; the positive pressure component is started, and the positive pressure component inputs nitrogen into the inner cavity, and the liquid sample in the inner cavity is filtered through the filter head 200 under the action of air pressure and flows into the liquid collection bottle 3. If multiple filtrations are required, after completing one filtration, the liquid adding mechanism injects the specified liquid into the filter sleeve 100, and the filtration operation is started again until the number of filtrations reaches the set upper limit, that is, the filtration of the liquid sample is completed. Finally, the first translation mechanism 7 drives the recovery assembly 10 to move to just below the filter clamp 21, the first lifting mechanism 24 drives the adapter 23 to separate from the filter sleeve 100, the filter clamp 21 releases the filter sleeve 100, and the filter sleeve 100 and the filter head 200 fall into the recovery assembly 10.

[0088] This application also provides an experimental device. Figure 1 and Figure 2 The experimental equipment includes a handling robot and any of the aforementioned filtering devices. The handling robot is used to transfer materials on the filtering device. The handling robot can deliver the filter sleeve 100 containing the liquid sample to be filtered to the filtering device, or place the empty liquid collection bottle 3 on the placement rack 6, or transport the liquid collection bottle 3 containing the filtered liquid, or take and place the placement rack 6 on the base 5, etc., thereby realizing a fully automated filtering operation and greatly reducing labor costs. Among them, the handling robot can be a mobile robot, a multi-degree-of-freedom manipulator, an XYZ three-axis moving mechanism, etc., which is not limited here.

[0089] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0090] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A filtering device, characterized in that: include: A support frame and a filter module, wherein the filter module is arranged on the support frame; wherein the filter module comprises: A filter clamp assembly, comprising a first driving mechanism and a filter clamp drivingly connected to the first driving mechanism, wherein the first driving mechanism is disposed on the support frame and is used to drive the filter clamp to clamp a filter sleeve column, wherein the filter sleeve column is used to contain a liquid sample to be filtered; A pressure regulating module is used to connect the filter sleeve column and adjust the air pressure in the filter sleeve column when the filter clamps the filter sleeve column, so as to filter the liquid sample in the filter sleeve column.

2. The filtering device according to claim 1, characterized in that: The filter module further comprises an adapter, which is arranged on the support frame and located above the filter clamp, one end of the adapter is connected to the pressure regulating module, and the other end of the adapter is sealedly connected to the filter sleeve when the filter clamp clamps the filter sleeve; The adapter has a first channel, and the first channel is used to connect the filter sleeve column with the pressure regulating module.

3. The filtering device according to claim 2, characterized in that: The pressure regulating module includes a positive pressure component and a pressure relief component; one end of the pressure relief component is connected to the first channel, and the other end is connected to the atmospheric environment, and the pressure relief component is used to relieve pressure on the filter sleeve when the adapter is connected to the filter sleeve; one end of the positive pressure component is connected to the first channel, and the other end is connected to the air source, and the positive pressure component is used to pressurize the filter sleeve.

4. The filtering device according to claim 3, characterized in that: The pressure regulating module further comprises a negative pressure component which is in communication with the first channel, and the negative pressure component is used to form a negative pressure in the filter sleeve column.

5. The filtering device according to claim 3, characterized in that: The pressure regulating module further comprises a digital display meter, which is in communication with the first channel and is used to display the air pressure in the filter sleeve column; The pressure relief assembly comprises a first switch valve, one end of which is in communication with the first channel, and the other end of which is in communication with the atmosphere; The positive pressure assembly includes a second switch valve and a proportional valve, one end of the second switch valve is connected to the first channel, and the other end is connected to one end of the proportional valve, and the other end of the proportional valve is connected to a nitrogen source.

6. The filtering device according to claim 2, characterized in that: The filter module further comprises a liquid adding mechanism, one end of which is connected to the solvent bottle, and the other end of which is connected to the adapter, and the liquid adding mechanism is used to transport liquid into the filter sleeve column; The adapter also has a second channel, and the second channel is used to connect the filter sleeve column with the liquid adding mechanism.

7. The filtering device according to claim 2, characterized in that: The filter module further comprises a first lifting mechanism, which is disposed on the support frame. The adapter is drivingly connected to the first lifting mechanism, and the first lifting mechanism is used to drive the adapter to approach or move away from the filter clamp.

8. The filtering device according to claim 1, characterized in that: The filtering device further comprises a liquid collecting bottle, which is located below the filtering clamping claws and is used to receive the filtered liquid.

9. The filtering device according to claim 8, characterized in that: The filtering device also includes a second lifting mechanism, which is arranged on the supporting frame. The filtering module is drivingly connected to the second lifting mechanism, and the second lifting mechanism is used to drive the filtering module to rise and fall so that the filtering claws are close to or away from the liquid collecting bottle.

10. The filtering device according to claim 8, characterized in that: The filtering device further comprises a base and a placement rack located on the base, wherein the placement rack is provided with at least one first placement position, and the first placement position is used to place the liquid collecting bottle; The filtering device also includes a first translation mechanism and / or a second translation mechanism, the base is arranged on the first translation mechanism, the first translation mechanism is used to drive the base to move along a first direction so that the liquid collecting bottle on the placement rack is close to or away from the filtering claw; the second translation mechanism is arranged on the support frame and connected to the filtering module, the second translation mechanism is used to drive the filtering module to move along a second direction so that the filtering claw is close to or away from the liquid collecting bottle; wherein, the first direction is parallel or perpendicular to the second direction.

11. The filtering device according to claim 10, characterized in that: The filtering device further comprises a fixed clamping assembly, which is arranged on the base; The fixed clamping assembly comprises a second driving mechanism and a fixed clamping jaw drivingly connected to the second driving mechanism, wherein the second driving mechanism is used to drive the fixed clamping jaw to clamp the filter sleeve column, so that the filter clamping jaw clamps the filter sleeve column on the fixed clamping jaw.

12. The filtering device according to any one of claims 1 to 11, characterized in that: The filter module further includes a filter sleeve, which includes a first tube body and a second tube body that are interconnected. The first tube body is provided with a first opening at one end away from the second tube body, and the first opening is used to communicate with the pressure regulating module; the second tube body is provided with a second opening at one end away from the first tube body, and the second opening is used to output the filtered liquid; the filter clamp clamps the first tube body; Wherein, the inner diameter of the first tube body is greater than the inner diameter of the second tube body.

13. The filtering device according to claim 12, characterized in that: The filter sleeve column further comprises a filter element, which is disposed in the first tube body and close to one end of the second tube body, and the filter element is used to filter the liquid sample in the first tube body.

14. The filtering device according to claim 12, characterized in that: The filter sleeve column also includes a plug which is detachably connected to an end of the second tube body away from the first tube body, and the plug is used to block the second opening before filtering.

15. The filtering device according to claim 14, characterized in that: The filtering device further comprises an unloading member located below the filtering clamping claw, and the unloading member is used to separate the plug from the second pipe body.

16. The filtering device according to claim 15, characterized in that: The filtering device further comprises a base and a placement rack located on the base, wherein the placement rack is provided with at least one first placement position and at least one second placement position, wherein the first placement position is used to place a liquid collection bottle, and the second placement position is used to place a filter head; After the unloading member removes the plug, the filter clamp drives the filter sleeve column to pierce the filter head.

17. The filtering device according to claim 16, characterized in that: The filtering device further comprises a recovery component, which is arranged on the base, and the unloading member is located above the recovery component; The filtering device further comprises a detector, which is arranged on the base, and the detector is used to detect whether the filter sleeve column has penetrated the filter head.

18. The filtering device according to claim 12, characterized in that: The filtering device further comprises a base and a fixed clamping assembly arranged on the base; the fixed clamping assembly comprises a second driving mechanism and a fixed clamping claw drivingly connected to the second driving mechanism, and the second driving mechanism is used to drive the fixed clamping claw to clamp the first tube body; The filter sleeve column further includes a blocking member, which blocks the first opening; the filter clamp is used to clamp the blocking member and separate the blocking member from the first tube body.

19. The filtering device according to any one of claims 1 to 11, characterized in that: There are a plurality of filter modules, and the plurality of filter modules are arranged on the support frame at intervals along a horizontal direction.

20. An experimental device, characterized in that: It comprises a handling robot and a filtering device as described in any one of claims 1 to 19, wherein the handling robot is used to transfer materials on the filtering device.

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