Parallel suction filtration device and system

Abstract

The utility model provides a parallel suction filtration device and system, and the parallel suction filtration device comprises a liquid storage cavity which is used for storing liquid to be filtered, the bottom of the liquid storage cavity is provided with an opening, and the opening is provided with an embedded structure; the funnel comprises a funnel body, a plane used for placing filter paper is arranged above the funnel body, a connecting piece matched with the embedded structure is arranged in the circumferential direction of the plane, and the filter paper is fixedly connected with the connecting piece through the embedded structure; a filter pipe is connected below the funnel body; the liquid collection bottle comprises a bottle body and a bottle cap which are detachably connected in a sealed mode, the bottle cap is connected with the filter pipe, and at least two air pipes are further arranged on the bottle cap and used for communicating the interior and the exterior of the bottle body; the air pipes of different liquid collecting bottles are connected through a connecting pipe, so that air path communication is achieved between the liquid collecting bottles, and the connecting pipe is further connected with a vacuum pump. The parallel rapid filtering device is suitable for parallel rapid filtering of various samples.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of suction filter funnel, concretely relates to a parallel suction filter device and system. BACKGROUND

[0002] The existing suction filter device usually includes filter cup, funnel and filter tube connected in sequence, the filter tube is connected with filter bottle, and the filter bottle is connected with vacuum pump. The gas in the filter bottle is extracted by the vacuum pump, so that the solution to be filtered flows into the filter bottle from the filter cup. This filter device is generally used for retaining solid, and the test paper in the funnel needs to be soaked before filtering, which is not convenient to operate. At the same time, the filtrate in the filter bottle needs to be sub-packed into test tubes for experiment after filtering.

[0003] However, there are many application scenarios in the laboratory that need to collect a large amount of filtrate, and a plurality of different filtrate samples are needed at a time. Since the to-be-measured quantities of different filtrate samples are different, the existing suction filter device needs to be used for suction filtering and sub-packing for many times, which is very time-consuming and laborious. UTILITY MODEL CONTENT

[0004] In view of the above defects or improvement requirements of the prior art, the utility model provides a parallel suction filter device and system, which is suitable for parallel rapid filtration of various samples.

[0005] To achieve the above purpose, according to one aspect of the utility model, a parallel suction filter device is provided, which comprises:

[0006] The liquid storage cavity is used for storing the filtrate to be filtered, the bottom is provided with an opening, and the opening is provided with a matching structure;

[0007] The funnel comprises a funnel body, the upper portion of the funnel body is provided with a plane for placing filter paper, the circumference of the plane is provided with a connecting piece matched with the matching structure, and the filter paper is fixedly connected with the connecting piece through the matching structure; the lower portion of the funnel body is connected with a filter tube;

[0008] The liquid collecting bottle comprises a bottle body and a bottle cap which are detachably and sealingly connected, the bottle cap is connected with the filter tube, and at least two air pipes are further arranged on the bottle cap, the air pipes are used for connecting the inside of the bottle body with the outside;

[0009] The air pipes of different liquid collecting bottles are connected through a connecting pipe, so that the air paths of the liquid collecting bottles are connected, and the connecting pipe is further connected with a vacuum pump.

[0010] According to the above device, the liquid collecting bottle is an experimental centrifugal tube; the device further comprises a test tube rack, and the experimental centrifugal tube is placed in the test tube rack.

[0011] According to the above device, the diameter of the liquid storage cavity is greater than that of the liquid collecting bottle, and the device further comprises a support frame for supporting the liquid storage cavity.

[0012] According to the above device, the fitting structure is a snap-fit ​​that engages with the connector.

[0013] According to the above device, the buckle includes an annular component connected to the outer edge of the opening, and the outer edge of the annular component is provided with a hook;

[0014] The connector is a slot or elastic element that mates with the hook.

[0015] According to the above device, the outer edge of the slot is provided with a flange, and a sealing element is provided between the flange and the slot; or a sealing element is provided between the elastic element and the hook.

[0016] According to the above device, the top of the liquid storage chamber is open, the bottom of the liquid storage chamber is inverted cone-shaped, and the opening is located at the bottom of the inverted cone-shaped opening; a float ball is also provided in the liquid storage chamber, and the diameter of the float ball is larger than the diameter of the opening.

[0017] According to the above device, the gas path connection is specifically as follows:

[0018] Several collection bottles are connected sequentially via connecting pipes. One of the gas pipes in the first collection bottle is sealed, and one of the gas pipes in the last collection bottle is connected to the vacuum pump; or

[0019] At least two collection bottles are connected to form a branch through a connecting pipe, and several branches are merged into one through a connecting pipe before being connected to the vacuum pump.

[0020] According to another aspect of this utility model, a parallel filtration system is provided, comprising the aforementioned parallel filtration device and a control unit; wherein,

[0021] The control unit includes a pressure sensor and a controller; the pressure sensor is installed in at least one collection bottle, and the controller receives and controls the start, stop and speed of the vacuum pump according to the signal from the pressure sensor.

[0022] According to the above system, the control unit also includes a touch screen connected to the controller for displaying the pressure signal of the liquid collection bottle collected by the pressure sensor, as well as input control commands.

[0023] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0024] 1. By employing a method of fitting the storage chamber into the funnel, the edges of the filter paper are tightly pressed together, preventing the liquid to be filtered from flowing around the filter paper into the funnel, thus improving the filtration effect. The filter paper is placed on a flat surface, eliminating the need for pre-wetting, which improves the operating efficiency of the device. Multiple collection bottles are connected to the gas path via connecting pipes, allowing for parallel filtration of multiple collection bottles with just one vacuum pump. Each collection bottle can filter different types of filtrate samples. Therefore, this invention is suitable for the parallel and rapid filtration of various samples.

[0025] 2. Using centrifuge tubes as collection bottles allows for direct collection of filtrate samples, which can then be used directly for experiments, reducing the need for dispensing, improving experimental efficiency, and lowering the cost of intermediate consumables.

[0026] 3. A float ball is installed in the liquid storage chamber. After all the liquid to be filtered has been filtered, the float ball will block the opening, preventing the liquid to be filtered from being connected to the atmosphere and causing cavitation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the device structure provided in one embodiment of the present invention.

[0028] Figure 2 yes Figure 1 Enlarged view of the middle funnel.

[0029] Figure 3 This is a schematic diagram of the gas path connection of the liquid collection bottle provided in one embodiment of this utility model.

[0030] Figure 4 This is a schematic diagram of the gas path connection of the liquid collection bottle provided in another embodiment of this utility model.

[0031] Figure 5 This is a schematic diagram of the control unit structure provided in an embodiment of the present utility model.

[0032] Figure 6 This is a schematic diagram of the device structure provided in another embodiment of the present invention.

[0033] Figure 7 This is a schematic diagram of the device structure provided in another embodiment of the present invention.

[0034] In the picture:

[0035] 1-Liquid storage chamber, 101-Opening, 102-Annular component, 103-Hook, 104-Float, 2-Function funnel, 201-Flat surface, 202-Connector, 203-Filter tube, 3-Filter paper, 4-Bottle cap, 5-Gas tube, 6-Bottle body, 7-Connecting tube, 8-Support frame. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] According to one aspect of this utility model, this embodiment provides a parallel filtration device, such as... Figure 1 and Figure 2 As shown, it includes a liquid storage chamber 1, a funnel 2, and a liquid collection bottle.

[0038] The liquid storage chamber 1 is used to store the liquid to be filtered. The bottom of the liquid storage chamber 1 is provided with an opening 101, and the opening 101 is provided with a fitting structure.

[0039] The funnel 2 includes a funnel body. A plane 201 for placing filter paper 3 is provided above the funnel body. A connector 202 matching the fitting structure is provided circumferentially on the plane 201. The filter paper 3 is fixed by fitting the connector 202 to the fitting structure. A filter tube 203 is connected to the bottom of the funnel body. In this embodiment, the fitting structure is a snap-fit ​​that engages with the connector, and the filter paper 3 is precisely pressed and fixed by the snap-fit. Further, the snap-fit ​​includes an annular component 102 connected to the outer edge of the opening 101. The outer edge of the annular component 102 has a downwardly extending hook 103. In this embodiment, the connector 202 is an upwardly extending elastic component that engages with the hook 103. More optimally, a sealing element can also be provided on the inner edge of the elastic component to prevent the liquid to be filtered from overflowing from the fitting structure when flowing from the storage chamber 1 into the funnel 2. As an alternative, other snap-fit ​​methods can be set. For example, the connector can be set as a slot that mates with the hook 103, the outer edge of the slot is provided with a flange, and a sealing element is provided between the flange and the slot.

[0040] The collection bottle includes a detachably and sealably connected bottle body 6 and a bottle cap 4. The bottle cap 4 is connected to the filter tube 203, and the bottle cap 4 is also provided with at least two air tubes 5, which are used for communication between the inside and outside of the bottle body 6. The bottle cap 4 and the filter tube 203, and the bottle cap 4 and the air tubes 5 can be inserted together, with sealing gaskets added to the edges to ensure airtightness, or they can be made into an integrated structure.

[0041] The gas tubes 5 of different liquid collection bottles are connected by connecting tubes 7, so that the gas path between the liquid collection bottles is connected. The connecting tubes 7 are also connected to the vacuum pump. Figure 3 and Figure 4 Two illustrative gas path connection methods are given respectively. For example... Figure 3 As shown, the gas tubes 5 of several collection bottles are connected sequentially via connecting pipes 7. One of the gas tubes of the first collection bottle is sealed, and one of the gas tubes 5 of the last collection bottle is connected to the vacuum pump. Figure 4 As shown, the gas tubes 5 of four (at least two) collection bottles are connected into one branch via connecting pipes 7. These four (or several) branches are then merged into one main line via connecting pipes 7 and connected to the vacuum pump. It should be noted that... Figure 3 and Figure 4 Only two examples are given. As long as different collection bottles are connected by connecting tube 7, they are within the protection scope of this utility model.

[0042] The working process of this utility model is as follows: First, place the filter paper 3 on the plane 201 of the funnel 2, connect the liquid storage chamber 1 to the funnel 2 through the fitting structure, and press it tightly; connect the funnel filter tube 203 to the bottle cap 4, assemble the bottle cap 4 to the bottle body 6, and connect the connecting pipe 7 to make the gas path of all liquid collection bottles connected and connected to the vacuum pump. Add the same or different liquids to be filtered into the liquid storage chamber 1 as needed, and turn on the vacuum pump to filter.

[0043] In some embodiments, the collection bottle is a laboratory centrifuge tube. During filtration, the laboratory centrifuge tube can be placed directly in the test tube rack. After filtration, the experiment is performed directly using the centrifuge tube. Compared with the traditional method, using laboratory centrifuge tubes directly eliminates the need for dispensing, reduces intermediate steps and consumables, and improves experimental efficiency.

[0044] In some embodiments, to filter a larger volume of liquid at once, the diameter of the storage chamber needs to be relatively large. For example, if a centrifuge tube used in experiments is typically 50 ml, the storage chamber can also be set to a 50 ml size. If the height of the storage chamber is insufficient, its diameter needs to be larger. Of course, the cross-section of the storage chamber can also be other shapes; as long as the cross-sectional area of ​​the storage chamber is set large, the same effect can be achieved. This results in a high center of gravity for the entire device, making it prone to instability, thus requiring a support frame 8 to support the storage chamber 1. The support frame 8 can take many forms, such as... Figure 6 The lateral support frame 8 shown has several support ends, each corresponding to and matching the liquid storage chamber 1; alternatively, it can be... Figure 7 As shown, an annular support frame 8 is fitted below the liquid storage chamber 1. The bottom of the annular support frame is exactly the upper surface of the test tube rack. This support frame 8 is used in conjunction with the test tube rack.

[0045] Furthermore, the support frame 8 for supporting the liquid storage chamber 1 and the test tube rack for placing the experimental centrifuge tubes can be connected together to further improve the stability and balance of the device. The support frame 8 and the test tube rack can also be configured as a detachable connection structure, so that after filtration, the test tube rack and the experimental centrifuge tubes can be directly used together for experiments.

[0046] In some embodiments, the following continues: Figure 1 and Figure 2As shown, the upper part of the storage chamber 1 is open, and a float 104 is also installed in the storage chamber. The diameter of the float is larger than the diameter of the opening. This way, after all the filtrate has been filtered, the float 104 can block the opening 101, preventing the filtrate in a single funnel from being connected to the atmosphere and causing cavitation, while other funnels can continue to filter. To ensure that the float 104 can successfully block the opening 101, the bottom of the storage chamber 1 is designed as an inverted cone shape, with the opening 101 located at the bottom of the inverted cone, so that the float rolls to the opening 101 under the action of gravity.

[0047] According to another aspect of this utility model, this embodiment also provides a parallel filtration system, including the aforementioned parallel filtration device and control unit. Wherein, as... Figure 5 As shown, the control unit includes a pressure sensor and a controller; the pressure sensor is disposed in at least one collection bottle or in a connecting pipe between collection bottles, and the controller receives and controls the start, stop, and speed of the vacuum pump based on the signal from the pressure sensor. Preferably, the control unit also includes a touchscreen display connected to the controller for displaying the pressure signal from the collection bottle collected by the pressure sensor, as well as input control commands.

[0048] This invention employs a method of fitting the liquid storage chamber into the funnel, tightly pressing the edges of the filter paper together to prevent the liquid to be filtered from flowing around the filter paper into the funnel, thus improving the filtration effect. The filter paper is positioned on a flat surface, eliminating the need for pre-wetting and improving the operational efficiency of the device. Multiple collection bottles are connected to the gas path via connecting pipes, allowing for parallel filtration of multiple collection bottles with just one vacuum pump. Each collection bottle can be used to filter different types of filtrate samples. Therefore, this invention is suitable for the parallel and rapid filtration of various samples.

[0049] It should be noted that, depending on the implementation needs, the various components described in this application can be divided into more components, or two or more components or parts of the operation of components can be combined into new components to achieve the purpose of this utility model.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A parallel filtration device, characterized in that: include: The liquid storage chamber is used to store the liquid to be filtered. It has an opening at the bottom and a fitting structure at the opening. The funnel includes a funnel body, a plane for placing filter paper is provided on the upper part of the funnel body, and a connector matching the fitting structure is provided around the plane. The filter paper is fixed by the fitting structure and the connector. A filter tube is connected to the lower part of the funnel body. The collection bottle includes a bottle body and a cap that are detachably and sealingly connected. The cap is connected to the filter tube, and the cap is also provided with at least two air tubes for communication between the inside and outside of the bottle body. The gas tubes of different collection bottles are connected by connecting tubes, which enables gas flow between the collection bottles. The connecting tubes are also connected to a vacuum pump.

2. The parallel filtration device according to claim 1, characterized in that: The collection bottle is a centrifuge tube for laboratory use; the device also includes a test tube rack in which the centrifuge tubes for laboratory use are placed.

3. The parallel filtration device according to claim 1, characterized in that: The diameter of the liquid storage chamber is larger than that of the liquid collection bottle. The device also includes a support frame for supporting the liquid storage chamber.

4. The parallel filtration device according to claim 1, characterized in that: The fitting structure is a snap-fit, which engages with the connector.

5. The parallel filtration device according to claim 4, characterized in that: The buckle includes an annular component connected to the outer edge of the opening, and the outer edge of the annular component is provided with a hook; The connector is a slot or elastic element that mates with the hook.

6. The parallel filtration device according to claim 5, characterized in that: The outer edge of the card slot is provided with a flange, and a sealing element is provided between the flange and the card slot; or a sealing element is provided between the elastic element and the card hook.

7. The parallel filtration device according to claim 1, characterized in that: The top of the liquid storage chamber is open, and the bottom of the liquid storage chamber is inverted conical, with the opening located at the bottom of the inverted conical shape; a float ball is also provided in the liquid storage chamber, and the diameter of the float ball is larger than the diameter of the opening.

8. The parallel filtration device according to claim 1, characterized in that: The gas path connection specifically refers to: Several collection bottles are connected sequentially via connecting pipes. One of the gas pipes in the first collection bottle is sealed, and one of the gas pipes in the last collection bottle is connected to the vacuum pump; or At least two collection bottles are connected to form a branch through a connecting pipe, and several branches are merged into one through a connecting pipe before being connected to the vacuum pump.

9. A parallel filtration system, characterized in that: Includes the parallel filtration apparatus and control unit as described in any one of claims 1 to 8; wherein, The control unit includes a pressure sensor and a controller; the pressure sensor is installed in at least one collection bottle or in a connecting pipe between collection bottles, and the controller receives and controls the start, stop and speed of the vacuum pump according to the signal from the pressure sensor.

10. The parallel filtration system according to claim 9, characterized in that: The control unit also includes a touch screen connected to the controller to display the pressure signal of the collection bottle collected by the pressure sensor, as well as input control commands.

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