CN220715045U

CN220715045U - Purifying column

Info

Publication number: CN220715045U
Application number: CN202322303578.1U
Authority: CN
Inventors: 江光洪; 陈高明; 胡玉梅
Original assignee: Biocomma Ltd
Current assignee: Biocomma Ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2024-04-05
Anticipated expiration: 2033-08-25

Abstract

The utility model discloses a purifying column which comprises a sampling tube and a purifying part, wherein the sampling tube is provided with a liquid storage cavity, the purifying part comprises a cannula and a mounting part, the cannula is connected with the mounting part, a containing cavity is arranged in the mounting part, the cannula is provided with a runner, the containing cavity is communicated with the runner, a filter element is arranged in the containing cavity, and one end of the mounting part far away from the cannula is provided with a liquid inlet. When the purifying operation is needed, the purifying part is directly inserted into the sampling tube, and the purifying part is pushed down in the sampling tube. Because the purification column of the utility model is not provided with a long drip head at one end of the installation part far away from the cannula, but is provided with a liquid inlet at the end of the installation part directly, food sample liquid in the sampling tube can directly flow into the liquid inlet and flow into the filter element for purification, and the purified liquid seeps into the cannula. The whole purification operation is simple, the pipetting is not needed, the transferring time for transferring the food sample liquid is greatly saved, and the food sample liquid is prevented from being polluted in the transferring process.

Description

Purifying column

Technical Field

The utility model relates to the technical field of medicine detection, in particular to a purifying column.

Background

Aflatoxins are mycotoxins which have extremely outstanding harm to human health, are present in soil, animals and plants and various nuts, and easily pollute grain and oil products such as peanuts, corns, wheat and the like. For food health safety, detection of such toxins is required. In the process of collecting food samples for detection, the detection is influenced by various impurities, so that the food sample liquid is often required to be purified. The purification process generally uses a purification column.

Because the existing purifying column mostly adopts a needle tube shape, the end part of the purifying column is designed with a long section of drip head. During the purification operation, a mode of dripping the food sample liquid of the glass tube into the tube body of the purification column is generally adopted, and the food sample liquid flows into the filter element along the tube body and finally flows into the dropper head. However, by adopting the way of transferring the food sample liquid, the food sample liquid is easy to be polluted in the transferring process and wastes time. If the purifying column is directly inserted into the glass tube, food sample liquid in the glass tube is difficult to flow from the dropper head to the tube body, so that the filter element in the purifying column cannot purify the food sample liquid.

Disclosure of Invention

The utility model aims to provide a purifying column, which aims to solve the problems that a long-section drip head is designed at the end part of the existing purifying column, so that a pipetting mode is needed, but food sample liquid is easy to pollute in the transferring process and wastes time.

To achieve the above object, the present utility model provides a purification column comprising:

the liquid storage device comprises a sampling tube, a liquid storage device and a liquid storage device, wherein the sampling tube is provided with a liquid storage cavity, and one end of the sampling tube is provided with a tube orifice which is communicated with the liquid storage cavity; and

the purifying part, purifying part is followed the mouth of pipe is inserted and is located the stock solution chamber, purifying part includes intubate and installation department, the intubate with the installation department is connected, the intubate is equipped with the runner, be equipped with the holding chamber in the installation department, the holding chamber with the runner intercommunication, install the filter core in the holding chamber, the installation department is kept away from the one end of intubate is equipped with the inlet, the inlet intercommunication the holding chamber with the stock solution chamber.

Optionally, the purifying part further comprises a one-way valve, the one-way valve is arranged between the cannula and the mounting part, the one-way valve is provided with a guide channel, and the guide channel is communicated with the runner and the accommodating cavity.

Optionally, the check valve is located the intubate is close to the one end of installation department, the check valve includes bulge and fixed part, the bulge for the fixed part protrusion sets up, just the bulge is located in the runner, the direction passageway includes export and fixed mouth, the bulge is equipped with the export, the fixed part is equipped with the fixed mouth, the export with the fixed mouth intercommunication.

Optionally, the installation department includes pipe and accommodation portion, the accommodation portion is equipped with the accommodation chamber, the pipe orientation the intubate protrusion sets up, the intubate inserts and locates in the pipe and extend to the accommodation chamber.

Optionally, the one end protrusion that is close to the installation department of intubate is provided with screens portion, screens portion in the holding intracavity with holding portion butt.

Optionally, the periphery of fixed part is provided with the solid fixed ring along the protrusion, screens portion is equipped with the draw-in groove, gu fixed ring joint in the draw-in groove, just gu fixed ring butt in the filter core.

Optionally, the holding portion includes top ring, spacing ring and encloses the ring, the top ring the spacing ring with enclose the ring and enclose and close and form the holding chamber, the top ring with the pipe connection.

Optionally, one side of the filter element is abutted with the fixing part, the other side of the filter element is abutted with the limiting ring, and the limiting ring is provided with the liquid inlet.

Optionally, the protrusion includes a limit cylinder and a tip cylinder, the limit cylinder connects the tip cylinder with the fixed part, the tip cylinder tapers towards the direction away from the limit cylinder, the top of the tip cylinder is provided with the export.

Optionally, the outer wall of limit section of thick bamboo with the inner wall butt of intubate, tip section of thick bamboo is located the runner.

According to the technical scheme, the purification part is inserted into the sampling tube, the purification part comprises the insertion tube and the installation part, the insertion tube is connected with the installation part, the installation part is internally provided with the accommodating cavity, the insertion tube is provided with the runner, the accommodating cavity is communicated with the runner, the filter element is installed in the accommodating cavity, one end of the installation part, which is far away from the insertion tube, is provided with the liquid inlet, and the liquid inlet is communicated with the accommodating cavity and the liquid storage cavity. When the purifying operation is needed, the purifying part is directly inserted into the sampling tube, and the purifying part is pushed down in the sampling tube. Because the purification column of the utility model is not provided with a long drip head at one end of the installation part far away from the cannula, but is provided with a liquid inlet at the end of the installation part directly, food sample liquid in the sampling tube can directly flow into the liquid inlet and flow into the filter element for purification, and the purified liquid seeps into the cannula. The whole purification operation is simple, the pipetting is not needed, the transferring time for transferring the food sample liquid is greatly saved, and the food sample liquid is prevented from being polluted in the transferring process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a purifying column according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of one embodiment of a purification column of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic exploded view of an embodiment of the purification column of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present utility model proposes a purification column 100. Referring to fig. 1 to 4, fig. 1 is a schematic structural view of an embodiment of a purifying column 100 according to the present utility model; FIG. 2 is a cross-sectional view of one embodiment of a purification column 100 of the present utility model; FIG. 3 is an enlarged view of a portion of FIG. 2 at A; fig. 4 is a schematic exploded view of an embodiment of a purification column 100 according to the present utility model.

In an embodiment of the present utility model, as shown in fig. 1 to 4, a purifying column 100 according to the present utility model includes:

the sampling tube 10, the sampling tube 10 has liquid storage cavity 11, and one end of the sampling tube 10 has tube orifice 12, the tube orifice 12 communicates with liquid storage cavity 11; and

the purifying part 20, purifying part 20 inserts from mouth of pipe 12 and locates the stock solution chamber 11, and purifying part 20 includes intubate 21 and installation department 22, and intubate 21 is connected with installation department 22, and intubate 21 is equipped with runner 210, is equipped with holding chamber 223 in the installation department 22, and holding chamber 223 communicates with runner 210, installs filter core 224 in the holding chamber 223, and the one end that installation department 22 kept away from intubate 21 is equipped with inlet 226, inlet 226 intercommunication holding chamber 223 and stock solution chamber 11.

According to the technical scheme, the purification part 20 is inserted into the sampling tube 10, the purification part 20 comprises the insertion tube 21 and the installation part 22, the insertion tube 21 is connected with the installation part 22, the installation part 22 is internally provided with the accommodating cavity 223, the insertion tube 21 is provided with the flow channel 210, the accommodating cavity 223 is communicated with the flow channel 210, the accommodating cavity 223 is internally provided with the filter element 224, one end, far away from the insertion tube 21, of the installation part 22 is provided with the liquid inlet 226, and the liquid inlet 226 is communicated with the accommodating cavity 223 and the liquid storage cavity 11. When the purging operation is required, the purging unit 20 is directly inserted into the sampling tube 10, and the purging unit 20 is pushed down in the sampling tube 10. Since the purifying column 100 of the present utility model does not have a long drip head at the end of the mounting portion 22 remote from the insertion tube 21, but has a liquid inlet 226 directly at the end of the mounting portion 22, the food sample liquid in the sampling tube 10 can directly flow into the liquid inlet 226 and flow through the filter element 224 to be purified, and the purified liquid infiltrates into the insertion tube 21. The whole purification operation is simple, the pipetting is not needed, the transferring time for transferring the food sample liquid is greatly saved, and the food sample liquid is prevented from being polluted in the transferring process.

Wherein the filter element 224 may be a purification packing. The purification filler can be silica gel or silica-magnesium type adsorbent. The mounting portion 22 may be made of rubber.

In one embodiment, the purifying portion 20 is provided with a cannula 21 and a mounting portion 22, the mounting portion 22 being configured to mount a filter element 224. Cannula 21 is connected to mounting portion 22, cannula 21 may be used as a handle so that an operator pushes mounting portion 22 through cannula 21 into reservoir 11 of sampling tube 10. Wherein the outer diameter of the mounting portion 22 matches the inner diameter of the sampling tube 10. The mounting portion 22 is pushed into the reservoir 11. The mounting part 22 is pressed down on the sampling tube 10 and contacts with the food sample liquid, and the gas in the liquid storage cavity 11 can assist the food sample liquid to flow into the liquid inlet 226 from bottom to top and flow into the filter element 224 in the accommodating cavity 223; after that, the filter element 224 purifies the food sample liquid, and finally, the purified liquid permeates into the cannula 21, so that an operator can conveniently absorb the liquid purified in the cannula 21 for further detection.

Optionally, the purifying part 20 further includes a check valve 23, the check valve 23 is disposed between the cannula 21 and the mounting part 22, the check valve 23 is provided with a guide channel 235, and the guide channel 235 communicates with the flow channel 210 and the accommodating cavity 223.

In one embodiment, to facilitate the suction of the purified liquid and reduce the backflow of the purified liquid into the receiving chamber 223, the purifying part 20 is further provided with a one-way valve 23, which is provided between the cannula 21 and the mounting part 22. The food sample fluid is purified by the filter element 224 and then flows into the cannula 21 through the check valve 23. The purifying part 20 is provided with a one-way valve 23, which can prevent the purified liquid from flowing back into the accommodating cavity 223. And the purified liquid in the cannula 21 can be directly sucked when the purified liquid needs to be detected later.

Specifically, the check valve 23 is disposed at one end of the cannula 21 near the mounting portion 22, the check valve 23 includes a protruding portion 230 and a fixing portion 233, the protruding portion 230 protrudes with respect to the fixing portion 233, and the protruding portion 230 is disposed in the flow passage 210, the guide passage 235 includes an outlet 236 and a fixing port 237, the protruding portion 230 is provided with the outlet 236, the fixing portion 233 is provided with the fixing port 237, and the outlet 236 communicates with the fixing port 237.

In one embodiment, to guide the purified liquid into cannula 21 and reduce the back flow of the purified liquid into receiving chamber 223, protrusion 230 of one-way valve 23 is mounted into flow channel 210 of cannula 21 by fixing portion 233, protrusion 230 is provided with outlet 236, outlet 236 is in communication with flow channel 210; the fixing portion 233 is provided with a fixing opening 237, the fixing hole is communicated with the accommodating cavity 223, and the liquid purified by the filter element 224 flows upward through the fixing opening 237 and the outlet 236 in sequence, flows into the flow passage 210, and is stored in the flow passage 210. In one embodiment, the protrusion 230 tapers away from the receiving cavity 223 such that the outlet 236 of the protrusion 230 is smaller. The purified liquid is not easy to flow back to the accommodating cavity 223 from the outlet 236 of the protruding part 230, so that the purified liquid can be stored in the flow channel 210, and an operator can conveniently absorb the purified liquid in the cannula 21 for further detection operation. Wherein the cross section of the protrusion 230 may be tapered, semi-elliptical, etc.

In order to facilitate insertion of the cannula 21 into the accommodating chamber 223, as shown in fig. 1 to 4, the mounting portion 22 includes a catheter 220 and an accommodating portion 221, the accommodating portion 221 is provided with the accommodating chamber 223, the catheter 220 is disposed protruding toward the cannula 21, and the cannula 21 is inserted into the catheter 220 and extends to the accommodating chamber 223.

In one embodiment, to facilitate insertion of cannula 21 into receiving cavity 223, mounting portion 22 includes a conduit 220 and a receiving portion 221, with the inner diameter of conduit 220 matching the outer diameter of cannula 21, cannula 21 may be inserted into conduit 220. The receiving portion 221 is provided with a receiving chamber 223 for mounting the filter cartridge 224.

As shown in fig. 1 to 4, a stopper 211 is provided to protrude from one end of the insertion tube 21 near the mounting portion 22, and the stopper 211 abuts against an inner ceiling wall of the accommodating portion 221 in the accommodating chamber 223.

In one embodiment, to lock the cannula 21 with the mounting portion 22, a locking portion 211 is provided at an end of the cannula 21 near the mounting portion 22, and the locking portion 211 may be locked into the accommodating portion 221 from the catheter 220 and then abut against an inner top wall of the accommodating portion 221 in the accommodating cavity 223. Wherein, the conduit 220 and the accommodating portion 221 of the mounting portion 22 are integrally formed.

Further, as shown in fig. 1 to 4, a fixing ring 234 is protruding from the outer periphery of the fixing portion 233, the clamping portion 211 is provided with a clamping groove 212, the fixing ring 234 is clamped in the clamping groove 212, and the fixing ring 234 abuts against the filter element 224.

In an embodiment, the fixing ring 234 is clamped to the clamping groove 212, and the fixing portion 233 is clamped to the clamping portion 211, so that the space occupied by the accommodating cavity 223 can be reduced, and the protruding portion 230 of the check valve 23 can be inserted into the flow channel 210 of the cannula 21.

Optionally, the accommodating portion 221 includes a top ring 225, a limiting ring 227 and a surrounding ring 228, the top ring 225 and the limiting ring 227 are disposed on two sides of the surrounding ring 228, the top ring 225, the limiting ring 227 and the surrounding ring 228 enclose to form an accommodating cavity 223, and the top ring 225 is connected with the conduit 220.

In an embodiment, the top ring 225, the limiting ring 227 and the surrounding ring 228 enclose to form a containing cavity 223, the filter element 224 is disposed in the containing cavity 223, and the fixing ring 234 and the clamping portion 211 are clamped to the inner top wall of the containing portion 221 and abut against the filter element 224.

Specifically, one side of the filter element 224 is abutted against the fixing portion 233, the other side of the filter element 224 is abutted against the limiting ring 227, and the limiting ring 227 is provided with the liquid inlet 226.

Optionally, the protruding part 230 includes a limiting cylinder 231 and a tip cylinder 232, the limiting cylinder 231 connects the tip cylinder 232 and the fixing part 233, the tip cylinder 232 tapers away from the limiting cylinder 231, and an outlet 236 is provided at the top of the tip cylinder 232.

Specifically, the outer wall of the stopper cylinder 231 abuts against the inner wall of the cannula 21, and the tip cylinder 232 is located in the flow passage 210.

In one embodiment, the tip cartridge 232 tapers away from the stop cartridge 231 such that the outlet 236 of the tip cartridge 232 is relatively small. The purified liquid is not easy to flow back to the accommodating cavity 223 from the outlet 236, so that the purified liquid can be stored in the flow channel 210, and an operator can conveniently absorb the purified liquid in the cannula 21 for further detection operation. Wherein the cross-section of the tip barrel 232 may be tapered, semi-elliptical, etc.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A purification column comprising:

2. The purifying column of claim 1, wherein the purifying portion further comprises a one-way valve disposed between the cannula and the mounting portion, the one-way valve having a guide channel in communication with the flow passage and the receiving chamber.

3. The purifying column of claim 2, wherein the one-way valve is provided at an end of the insertion tube near the mounting portion, the one-way valve includes a protruding portion and a fixing portion, the protruding portion is provided protruding with respect to the fixing portion, and the protruding portion is located in the flow passage, the guide passage includes an outlet and a fixing port, the protruding portion is provided with the outlet, the fixing portion is provided with the fixing port, and the outlet communicates with the fixing port.

4. A purification cartridge according to claim 3, wherein the mounting portion comprises a conduit and a receiving portion, the receiving portion being provided with the receiving cavity, the conduit being arranged to project towards the cannula, the cannula being inserted into the conduit and extending to the receiving cavity.

5. The purifying column according to claim 4, wherein a stopper portion is provided at an end of the insertion tube adjacent to the mounting portion, the stopper portion being in abutment with the receiving portion in the receiving chamber.

6. The purifying column according to claim 5, wherein a fixing ring is provided on the outer periphery of the fixing portion in a protruding manner, the locking portion is provided with a locking groove, the fixing ring is locked to the locking groove, and the fixing ring is abutted to the filter element.

7. The purifying column according to any one of claims 4 to 6, wherein the accommodating portion includes a top ring, a stopper ring, and a surrounding ring, the top ring and the stopper ring are provided on both sides of the surrounding ring, the top ring, the stopper ring, and the surrounding ring are surrounded to form the accommodating chamber, and the top ring is connected to the conduit.

8. The purifying column according to claim 7, wherein one side of the filter element is abutted to the fixing portion, the other side of the filter element is abutted to the limiting ring, and the limiting ring is provided with the liquid inlet.

9. The purifying column of any one of claims 3 to 6, wherein the projection comprises a stopper cylinder and a tip cylinder, the stopper cylinder connecting the tip cylinder and the fixing portion, the tip cylinder tapering away from the stopper cylinder, the tip cylinder being provided at a top thereof with the outlet.

10. The purifying column of claim 9, wherein an outer wall of the limiting cylinder abuts an inner wall of the cannula, and the tip cylinder is located in the flow channel.