Integrated filter column

Abstract

The utility model provides an integrated filter column. The integrated filter column comprises a barrel, a piston cavity is formed in the barrel, a piston part is arranged in the piston cavity, a filter cavity is formed in one end of the piston cavity, a filter assembly is arranged in the filter cavity, and a liquid inlet connector is arranged at one end of the filter cavity. A liquid outlet connector is arranged on the cylinder body, the input connector is connected with a liquid inlet pipe, and the liquid outlet connector is connected with a liquid outlet pipe; the liquid inlet pipe is connected with a first on-off control part used for controlling on-off of the liquid inlet pipe, and the liquid outlet pipe is connected with a second on-off control part used for controlling on-off of the liquid outlet pipe. When the filter is used for filtering, a centrifugal machine is not needed, the operation is simple and convenient, the time for completing one-time filtering operation is short, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to a filter column, and more particularly to an integrated filter column. Background Technology

[0002] The current method for filtering biological and chemical liquid samples typically involves a combination of filter columns and centrifuge tubes. In this method, the filter column is installed in the centrifuge tube, the liquid sample to be filtered is added to the centrifuge tube, the cap of the centrifuge tube is tightened, and the tube is placed in a centrifuge. Once the centrifuge is turned on, the liquid passes through the filter column in the centrifuge tube under centrifugal force, thus achieving the filtration of the liquid sample.

[0003] However, the existing filtration method has the following problems: it is relatively cumbersome to operate, especially when processing a large number of samples, which takes a lot of time and effort; and because it requires centrifugation, the centrifugation operation takes a certain amount of time, resulting in low operating efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide an integrated filter column.

[0005] The purpose of this utility model is achieved through the following technical solution: an integrated filter column includes a cylinder, a piston chamber is provided inside the cylinder, a piston component is provided in the piston chamber, a filter chamber is provided at one end of the piston chamber, a filter assembly is provided in the filter chamber, and an inlet connector is provided at one end of the filter chamber; an outlet connector is provided on the cylinder, the inlet connector is connected to the inlet pipe, and the outlet connector is connected to the outlet pipe; a first on / off control component for controlling the on / off of the inlet pipe is connected to the inlet pipe, and a second on / off control component for controlling the on / off of the outlet pipe is connected to the outlet pipe.

[0006] Preferably, both the first on / off control component and the second on / off control component are pinch valves.

[0007] Preferably, the filter chamber is provided with a positioning stepped surface, and the filter component includes a filter element and a fixing element. One side of the filter element is in contact with the positioning stepped surface, and the fixing element presses down on the other side of the filter element.

[0008] Preferably, the filter chamber comprises two chambers arranged in series, each chamber containing a filter component, wherein the diameter of one chamber is larger than the diameter of the other chamber.

[0009] Preferably, the fixing member includes a positioning pressure ring and an inner expansion ring. One end of the positioning pressure ring is provided with a plurality of expansion flaps, which are arranged in a circular array. The outer side of the inner expansion ring is provided with a protruding ring. When the fixing member is installed, the inner expansion ring is installed inside the positioning pressure ring so that the expansion flaps expand outward, and the expansion flaps expand with the inner wall of the filter chamber.

[0010] Preferably, a positioning groove is provided on the inner side of the expansion flap; when the fastener is installed, the protruding ring on the inner expansion ring is embedded in the positioning groove on the inner side of the expansion flap.

[0011] Preferably, the piston component includes a piston body and a push rod, with the piston body disposed at one end of the push rod and in the piston chamber.

[0012] The beneficial effects of this utility model are: when performing filtration, there is no need to use a centrifuge, the operation is simple and convenient, and the time required to complete one filtration operation is short, greatly improving the operating efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram showing the separation of the positioning pressure ring and the inner expansion ring.

[0015] Figure 3 This is a schematic diagram showing the connection between the inner expansion ring and the positioning pressure ring.

[0016] In the diagram: 1. Cylinder body, 2. Piston body, 3. Push rod, 4. Piston chamber, 5. Filter chamber, 6. Liquid outlet connector, 7. Liquid inlet pipe, 8. First on / off control component, 9. Liquid outlet pipe, 10. Second on / off control component, 11. Liquid inlet connector, 12. Filter element, 13. Fixing component, 13-1. Positioning pressure ring, 13-2. Expansion flap, 13-3. Positioning groove, 13-4. Inner expansion ring, 13-5. Protruding ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] like Figures 1 to 3As shown, an integrated filter column includes a cylindrical body 1, a piston chamber 4 inside the cylindrical body 1, a piston component inside the piston chamber 4, a filter chamber 5 at one end of the piston chamber 4, a filter assembly inside the filter chamber 5, and an inlet connector 11 at one end of the filter chamber 5. An outlet connector 6 is provided on the cylindrical body 1, the inlet connector being connected to an inlet pipe 7, and the outlet connector 6 being connected to an outlet pipe 9. A first on / off control component 8 for controlling the opening and closing of the inlet pipe 7 is connected to the inlet pipe 7, and a second on / off control component 10 for controlling the opening and closing of the outlet pipe 9 is connected to the outlet pipe 9. The piston component includes a piston body 2 and a push rod 3, the piston body 2 being disposed at one end of the push rod 3 and within the piston chamber 4.

[0019] In this invention, during use, the inlet pipe 7 is first opened by the first on / off control component 8, and the outlet pipe 9 is closed by the second on / off control component 10. The inlet pipe 7 is then inserted into the liquid sample to be filtered. The piston component is then pulled outward to draw the liquid sample into the piston chamber 4. After the suction process is completed, the inlet pipe 7 is closed by the first on / off control component 8, and the outlet pipe 9 is opened by the second on / off control component 10. The piston component is then pushed inward to allow the liquid sample in the piston chamber 4 to pass through the filter component and then be discharged through the outlet pipe 9. The liquid sample passes through the filter component, which filters the liquid sample to achieve the filtration function.

[0020] This invention eliminates the need for a centrifuge during filtration, making it simple and convenient to operate. It also reduces the time required to complete one filtration operation, significantly improving operational efficiency.

[0021] In this embodiment, both the first on / off control component 8 and the second on / off control component 10 are pinch valves.

[0022] The filter chamber 5 is provided with a positioning stepped surface. The filter component includes a filter element 12 and a fixing element 13. One side of the filter element 12 is in contact with the positioning stepped surface, and the fixing element 13 presses down on the other side of the filter element 12.

[0023] Furthermore, the fixing member 13 includes a positioning pressure ring 13-1 and an inner expansion ring 13-4. One end of the positioning pressure ring 13-1 is provided with a plurality of expansion flaps 13-2, which are arranged in a circular array. A protruding ring 13-5 is provided on the outer side of the inner expansion ring 13-4. When the fixing member 13 is installed, the inner expansion ring 13-4 is installed inside the positioning pressure ring 13-1 to cause the expansion flaps 13-2 to expand outward, and the expansion flaps 13-2 expand against the inner wall of the filter chamber 5. A positioning groove 13-3 is provided on the inner side of the expansion flaps 13-2. When the fixing member 13 is installed, the protruding ring 13-5 on the inner expansion ring 13-4 is embedded in the positioning groove 13-3 on the inner side of the expansion flaps 13-2.

[0024] The stability of the filter element 12's installation directly affects the final filtration effect. If the filter element 12 is not installed stably, it is prone to displacement during liquid extraction, causing the liquid sample to pass through the gap between the filter element 12 and the inner wall of the filter chamber 5, thus affecting the filtration effect. In this invention, the filter element 12 is stably fixed in the filter chamber 5 by the fixing member 13, which effectively prevents the filter element 12 from shifting, thereby ensuring the final filtration effect. During installation, the filter element 12 is first installed into the filter chamber 5, with one side of it contacting the positioning step surface. Then, the positioning pressure ring 13-1 is installed into the filter chamber 5, pressing down on the other side of the filter element 12. Finally, the inner expansion ring 13-4 is installed into the positioning pressure ring 13-1. After the inner expansion ring 13-4 is installed, the expansion flap 13-2 expands outward through the protruding ring 13-5 on the inner expansion ring 13-4. After the expansion flap 13-2 expands, it presses tightly against the inner wall of the filter chamber 5, thereby stably installing the filter element 12 in the filter chamber 5.

[0025] In this embodiment, the filter chamber 5 comprises two chambers arranged in series, each containing a filter element. The diameter of one chamber is larger than that of the other. This invention provides two-stage filtration, where the liquid sample passes through both filter elements sequentially during filtration to improve the filtration effect.

[0026] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. An integrated filter column, characterized by, The cylinder is internally provided with a piston cavity, the piston cavity is internally provided with a piston component, one end of the piston cavity is provided with a filter cavity, the filter cavity is internally provided with a filter component, one end of the filter cavity is provided with a liquid inlet connector; the cylinder is provided with a liquid outlet connector, the liquid inlet connector is connected with a liquid inlet pipe, the liquid outlet connector is connected with a liquid outlet pipe; the liquid inlet pipe is connected with a first on-off control component for controlling the on-off of the liquid inlet pipe, the liquid outlet pipe is connected with a second on-off control component for controlling the on-off of the liquid outlet pipe.

2. The integrated filter column of claim 1, wherein, The first on-off control component and the second on-off control component are both pinch valves.

3. The integrated filter column of claim 1, wherein, The filter cavity is provided with a positioning stepped surface, the filter component comprises a filter piece and a fixing piece, one side of the filter piece is in contact with the positioning stepped surface, and the other side of the filter piece is pressed by the fixing piece.

4. The integrated filter column of claim 3, wherein, The filter cavity comprises two cavities arranged in series, and each cavity is provided with a filter component, and the diameter of one of the cavities is greater than that of the other cavity.

5. The integrated filter column of claim 3, wherein, The fixing piece comprises a positioning compression ring and an inner expansion ring, one end of the positioning compression ring is provided with a plurality of expansion petals arranged in a circular array, and the outer side of the inner expansion ring is provided with a convex ring; during installation, the inner expansion ring is installed in the positioning compression ring so that the expansion petals are expanded outward, and the expansion petals are in contact with the inner wall ribs of the filter cavity.

6. An integrated filter column according to claim 5, wherein, The inner side of the expansion petal is provided with a positioning groove; during installation, the convex ring on the inner expansion ring is embedded in the positioning groove on the inner side of the expansion petal.

7. The integrated filter column of claim 1, wherein, The piston component comprises a piston body and a push rod, the piston body is arranged at one end of the push rod, and the piston body is arranged in the piston cavity.

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