Filtering device for assisting solid-phase extraction small column

Abstract

The utility model discloses a filtering device for assisting a solid-phase extraction small column, and relates to the technical field of detection devices. A first filter screen and a second filter screen are sequentially arranged in a filtering bottle body from top to bottom; a fixed table is arranged on the inner wall of the filter bottle body and comprises an inclined collecting part, a vertical connecting part and a horizontal supporting part, the inner wall of the connecting part is matched with the outer wall of the first filter screen, and a plurality of springs are arranged between the supporting part and the first filter screen. The first filter screen and the second filter screen are arranged in the filter bottle body, and liquid can be separated more finely through sequential filtration of the two filter screens, so that the accuracy of analysis and detection is improved. The spring can absorb impact force, reduce direct impact on the first filter screen, prevent the filter screen from being damaged due to overlarge stress, prolong the service life of the filter screen, reduce the use cost, accelerate the filtering speed, shorten the filtering period and improve the filtering effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field, concretely relates to a filter device for assisting solid phase extraction small column. BACKGROUND

[0002] Solid phase extraction is a commonly used sample pretreatment technology, and the solid phase extraction small column needs to filter the sample to remove impurities in the sample during use, so as to prevent the impurities from blocking the solid phase extraction small column and affecting the extraction effect.

[0003] At present, when filtering the sample, the traditional filter device is generally used, and these devices have some problems. For example, the filtering efficiency is low, and the sample cannot be filtered quickly and effectively; the filtering precision is unstable, and it is difficult to ensure the quality of the filtered sample. SUMMARY

[0004] The utility model solves the technical problem that: in view of the deficiency of prior art, provide a kind of filter device for assisting solid phase extraction small column, filtering efficiency is high, precision is high, improve the quality of the sample after filtering.

[0005] To solve the above technical problems, the technical scheme of the utility model is:

[0006] A filter device for assisting solid phase extraction small column, comprising a filter bottle body, the inside of the filter bottle body is sequentially provided with a first filter screen and a second filter screen from top to bottom;

[0007] The inner wall of the filter bottle body is provided with a fixing table, the fixing table includes an inclined collecting part, a vertical connecting part and a horizontal supporting part, the inner wall of the connecting part is adapted to the outer wall of the first filter screen, and a plurality of springs are arranged between the supporting part and the first filter screen.

[0008] As an improved technical scheme, a uniform distribution disc is arranged between the first filter screen and the second filter screen, the uniform distribution disc includes a conical part protruding upward and a buffer part inclined to the middle, and a plurality of distribution holes are arranged on the uniform distribution disc.

[0009] As an improved technical scheme, the filter bottle body includes a cylindrical part and a conical bottom part, and the cylindrical part and the conical bottom part are connected by threads.

[0010] As an improved technical scheme, the second filter screen is arranged between the cylindrical part and the conical bottom part.

[0011] As an improved technical scheme, the discharge opening of the filter bottle body is provided with a sealing plug at one end, the upper part of the sealing plug is provided with a first external thread, the inner side of the discharge opening of the filter bottle body is provided with a first internal thread, and the first external thread and the first internal thread are adapted to each other.

[0012] As an improved technical solution, the sealing plug is provided with a first sealing gasket between the sealing plug and the discharging port of the filter bottle body.

[0013] As a preferred technical solution, the lower part of the sealing plug is provided with a second external thread, and the inside of the upper inlet end of the solid phase extraction column is provided with a second internal thread matched with the second external thread.

[0014] As a preferred technical solution, the sealing plug is provided with a second sealing gasket between the sealing plug and the solid phase extraction column.

[0015] As a preferred technical solution, the top of the filter bottle body is provided with a cover body, and the cover body is provided with a feeding port.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0017] The utility model discloses a filter device for assisting solid phase extraction column, including filter bottle body, the inside of filter bottle body is equipped with first filter screen and second filter screen from top to bottom in proper order, the inner wall of filter bottle body is equipped with fixed platform, the fixed platform includes the collection of inclined, vertical connecting portion and horizontal support, the inner wall of connecting portion is adapted with the outer wall of first filter screen, and a plurality of springs are equipped between support and first filter screen. Filter bottle body inside sets up first filter screen and second filter screen, and through the filtration of two layers of filter screens in turn, can more fine separation to liquid, effectively removes the impurity of different size and nature, improves the precision and efficiency of filtration, obtains the filtrate of more pure, is favorable for the accurate extraction of target material of subsequent solid phase extraction column, reduces the interference of impurity to extraction result, improves the accuracy of analysis and detection. Support and first filter screen between a plurality of springs are equipped, and these springs can play the role of buffering. In the filtration process, when liquid flows in quickly or pressure changes suddenly, the spring can absorb the impact force, reduces the direct impact of first filter screen, prevents filter screen from being damaged due to excessive stress, prolongs the service life of filter screen, reduces the use cost. In addition, first filter screen slides up and down along the inner wall of connecting portion, reduces the situation that liquid leakage speed is slow because the impurity is accumulated in the upper part of first filter screen, speeds up the filtration speed, shortens the filtration period, and improves the filtration effect.

[0018] The utility model discloses a first filter screen and second filter screen between the equal distribution disc are equipped with, the equal distribution disc includes the conical portion of upward protruding and the buffer portion of the middle inclination, be equipped with a plurality of distribution holes on the equal distribution disc. The equal distribution disc can redistribute the sample falling from the first filter screen, make it evenly fall to the second filter screen, and the filtering effect of sample is better, and the conical portion and buffer portion increase the contact area with the sample to be measured, and the distribution of impurities on the second filter screen is more uniform, reduces the possibility of the local accumulation of impurities in the filter screen, thereby improve the interception efficiency of the second filter screen to impurities, improve the performance of the whole filtering device. The existence of the equal distribution disc makes the filtering process more stable. The uniform liquid distribution and buffer decompression function can reduce the filtering fluctuation caused by unstable liquid flow, make the filtering process can continuously and stably carry out, and be favorable to improve the quality consistency of filtering product.

[0019] The filtering bottle body includes a cylindrical portion and a conical bottom portion, and the cylindrical portion and the conical bottom portion are connected through threads. The second filter screen is arranged between the cylindrical portion and the conical bottom portion. The cylindrical portion and the conical bottom portion can be conveniently disassembled, so that the second filter screen can be replaced and the inside of the filtering bottle body can be cleaned, and the use is convenient.

[0020] One end of the discharging port of the filtering bottle body is provided with a sealing plug, the upper part of the sealing plug is provided with a first external thread, the inner side of the discharging port of the filtering bottle body is provided with a first internal thread, and the first external thread and the first internal thread are matched. The filtering bottle body and the sealing plug can be conveniently disassembled, and the threaded connection can provide reliable connection strength, so that the sealing plug cannot easily fall off from the discharging port during the filtering process, the overall structural stability of the filtering device is maintained, and problems such as liquid leakage caused by loosening of the sealing plug are prevented.

[0021] The first sealing gasket is arranged between the sealing plug and the discharging port of the filtering bottle body. The first sealing gasket can effectively fill the small gap between the sealing plug and the discharging port of the filtering bottle body, and further prevent liquid from leaking from the connecting port. During the filtering process, the liquid may exert a certain pressure on the discharging port, and if there is no good sealing, the liquid may seep out, affecting the filtering effect and the safety of the experimental environment. The existence of the first sealing gasket greatly improves the reliability of the sealing, and ensures the smooth progress of the filtering process.

[0022] The lower part of the sealing plug is provided with a second external thread, and the inner side of the upper inlet end of the solid phase extraction column is provided with a second internal thread matched with the second external thread. The cooperation of the second external thread and the second internal thread enables the sealing plug to be tightly connected with the upper inlet of the solid phase extraction column, ensures that the filtered liquid can smoothly and stably flow into the solid phase extraction column, avoids liquid leakage at the connection position, and guarantees the accuracy and effectiveness of the extraction process. Meanwhile, the threaded connection mode facilitates the combination of the filtering device with solid phase extraction columns of different specifications, the selection of appropriate solid phase extraction columns according to actual needs, and the quick connection and adjustment, thereby improving the universality and flexibility of the device.

[0023] A second sealing gasket is arranged between the sealing plug and the solid phase extraction column. The second sealing gasket has the same effect as the first sealing gasket, and further enhances the sealing performance between the sealing plug and the solid phase extraction column. In the process that the liquid flows from the filtering bottle body to the solid phase extraction column, even if subjected to certain pressure fluctuations, the second sealing gasket can effectively prevent liquid leakage, guarantee the stability and safety of the extraction process, avoid sample loss, and improve the accuracy of experimental results.

[0024] The top of the filtering bottle body is provided with a cover body, and the cover body is provided with a feeding port. The presence of the cover body can effectively prevent foreign matters from falling into the inside of the filtering bottle body, avoid the pollution of the sample by the foreign matters, guarantee the purity of the filtered sample, and thus improve the accuracy of subsequent filtering and extraction results. The arrangement of the feeding port facilitates the addition of the sample to be filtered, and can better observe the feeding amount, thereby avoiding problems such as liquid overflow caused by too fast or too much feeding. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be further explained in connection with the drawings and examples.

[0026] Fig. 1 is the structure schematic diagram of the utility model embodiment;

[0027] Fig. 2 is the sectional view of the utility model embodiment;

[0028] Fig. 3 is the explosion drawing of the utility model embodiment;

[0029] Among them: 1, filtering bottle body;2, first filter screen;3, second filter screen;4, fixed table;5, collection part;6, connecting part;7, support part;8, spring;9, uniform distribution disc;10, conical part;11, buffer part;12, distribution hole;13, cylindrical part;14, conical bottom;15, sealing plug;16, first external thread;17, first internal thread;18, first sealing gasket;19, second external thread;20, second internal thread;21, second sealing gasket;22, cover body;23, feeding port;24, solid phase extraction column. DETAILED DESCRIPTION

[0030] The utility model is further explained below in combination with the drawings and examples.

[0031] As Figs. 1-3 As shown in a kind of filter device for assisting solid phase extraction column, including filter bottle body 1, the inside of the filter bottle body 1 is equipped with first filter screen 2 and second filter screen 3 in turn from top to bottom;The inner wall of the filter bottle body 1 is equipped with fixed table 4, and the fixed table 4 includes inclined collection part 5, vertical connecting part 6 and horizontal support part 7, the inner wall of the connecting part 6 is adapted to the outer wall of the first filter screen 2, and a plurality of springs 8 are equipped between the support part 7 and the first filter screen 2. First filter screen 2 and second filter screen 3 are arranged in the filter bottle body 1, and the liquid can be more finely separated by the filtration of the two layers of filter screens in turn, effectively remove impurities of different sizes and properties, improve the precision and efficiency of filtration, obtain more pure filtrate, it is favorable for subsequent solid phase extraction column 24 to accurately extract target substance, reduce the interference of impurities on extraction result, improve the accuracy of analysis and detection. A plurality of springs 8 are equipped between the support part 7 and the first filter screen 2, and the springs 8 can play the role of buffering. In the filtration process, when liquid flows quickly or pressure changes suddenly, the spring 8 can absorb impact force, reduce the direct impact on the first filter screen 2, prevent the filter screen from being damaged due to excessive stress, prolong the service life of the filter screen, and reduce the use cost. In addition, the first filter screen 2 slides up and down along the inner wall of the connecting part 6, reduces the situation that liquid leakage speed is slow due to the accumulation of impurities on the upper part of the first filter screen 2, speeds up the filtration speed, shortens the filtration period and improves the filtration effect.

[0032] A plurality of distribution holes 12 are arranged on the uniform distribution disc 9. The uniform distribution disc 9 can redistribute the sample falling from the first filter screen 2, so that the sample falls uniformly to the second filter screen 3, and the filtration effect of the sample is better. The conical part 10 and the buffer part 11 increase the contact area with the sample to be tested, the distribution of impurities on the second filter screen 3 is more uniform, the possibility of local accumulation of impurities on the filter screen is reduced, so that the interception efficiency of the second filter screen 3 to impurities is improved, and the performance of the overall filter device is improved. At the same time, the existence of the uniform distribution disc 9 makes the filtration process more stable. Uniform liquid distribution and buffer decompression can reduce the filtration fluctuation caused by unstable liquid flow, so that the filtration process can be continuously and stably carried out, which is beneficial to improve the quality consistency of filtration products.

[0033] The filter bottle body 1 comprises a cylindrical part 13 and a conical bottom part 14 which are connected by threads. The second filter screen 3 is clamped between the cylindrical part 13 and the conical bottom part 14. The cylindrical part 13 and the conical bottom part 14 can be conveniently disassembled, so that the second filter screen 3 can be replaced and the inside of the filter bottle body 1 can be cleaned, which is convenient to use.

[0034] The filter bottle body 1 is provided with a sealing plug 15 at one end of the discharge port. The upper part of the sealing plug 15 is provided with a first external thread 16, and the inner side of the discharge port of the filter bottle body 1 is provided with a first internal thread 17, which is matched with the first external thread 16. The filter bottle body 1 and the sealing plug 15 can be conveniently disassembled, and the threaded connection can provide reliable connection strength, so that the sealing plug 15 will not easily fall off from the discharge port during the filtering process, thereby maintaining the overall structural stability of the filtering device and preventing liquid leakage due to loosening of the sealing plug 15.

[0035] The sealing plug 15 and the discharge port of the filter bottle body 1 are provided with a first sealing gasket 18. The first sealing gasket 18 can effectively fill the small gap between the sealing plug 15 and the discharge port of the filter bottle body 1, further preventing liquid leakage from the connection port. During the filtering process, the liquid may exert a certain pressure on the discharge port, and if there is no good sealing, the liquid may seep out, affecting the filtering effect and the safety of the experimental environment. The presence of the first sealing gasket 18 greatly improves the reliability of the sealing, ensuring the smooth progress of the filtering process.

[0036] The lower part of the sealing plug 15 is provided with a second external thread 19, and the inner side of the upper inlet end of the solid phase extraction column 24 is provided with a second internal thread 20 matched with the second external thread 19. The cooperation of the second external thread 19 and the second internal thread 20 enables the sealing plug 15 to be tightly connected with the upper inlet of the solid phase extraction column 24, ensuring that the filtered liquid can smoothly and stably flow into the solid phase extraction column 24, avoiding the phenomenon of liquid leakage at the connection part 6, and ensuring the accuracy and effectiveness of the extraction process. At the same time, this threaded connection method facilitates the combination of the filtering device with solid phase extraction columns 24 of different specifications, allows the selection of appropriate solid phase extraction columns 24 according to actual needs, and enables quick connection and adjustment, thereby improving the versatility and flexibility of the device.

[0037] The second sealing gasket 21 is arranged between the sealing plug 15 and the solid phase extraction column 24. The second sealing gasket 21 has the same effect as the first sealing gasket 18, and further enhances the sealing performance between the sealing plug 15 and the solid phase extraction column 24. In the process of liquid flowing from the filter bottle body 1 to the solid phase extraction column 24, even if a certain pressure fluctuation is caused, the second sealing gasket 21 can effectively prevent liquid leakage, ensure the stability and safety of the extraction process, avoid sample loss, and improve the accuracy of experimental results.

[0038] The top of the filter bottle body 1 is provided with a cover 22, and the cover 22 is provided with a feeding port 23. The presence of the cover 22 can effectively prevent foreign matter from falling into the inside of the filter bottle body 1, avoid the pollution of the sample caused by the foreign matter, ensure the purity of the filtered sample, and thus improve the accuracy of the subsequent filtering and extraction results. The setting of the feeding port 23 facilitates the addition of the sample to be filtered, and can better observe the feeding amount, avoid the problems such as liquid overflow caused by too fast or too much feeding, and the like.

[0039] It should be understood that the embodiments are only used for illustrating the present application and are not used for limiting the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various modifications or changes to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A filtration device for assisting a solid-phase extraction column, comprising a filter bottle, characterized in that: The filter bottle body is provided with a first filter screen and a second filter screen from top to bottom; The inner wall of the filter bottle is provided with a fixing platform, which includes an inclined collecting part, a vertical connecting part and a horizontal supporting part. The inner wall of the connecting part is adapted to the outer wall of the first filter screen, and a plurality of springs are provided between the supporting part and the first filter screen.

2. The filtration device for assisting solid-phase extraction columns as described in claim 1, characterized in that: A distribution disk is provided between the first filter screen and the second filter screen. The distribution disk includes an upwardly protruding conical part and a buffer part inclined towards the middle. The distribution disk is provided with a plurality of distribution holes.

3. The filtration device for assisting solid-phase extraction columns as described in claim 1, characterized in that: The filter bottle body includes a cylindrical part and a conical bottom, which are connected by threads.

4. A filtration device for assisting solid-phase extraction columns as described in claim 3, characterized in that: The second filter screen is positioned between the cylindrical portion and the bottom of the cone.

5. A filtration device for assisting solid-phase extraction columns as described in claim 1, characterized in that: The filter bottle body has a sealing plug at one end of the discharge port, the upper part of the sealing plug has a first external thread, and the inner side of the discharge port of the filter bottle body has a first internal thread, the first external thread and the first internal thread are compatible.

6. A filtration device for assisting a solid-phase extraction column as described in claim 5, characterized in that: A first sealing gasket is provided between the sealing plug and the discharge port of the filter bottle.

7. A filtration device for assisting a solid-phase extraction column as described in claim 5, characterized in that: The lower part of the sealing plug is provided with a second external thread, and the inner side of the upper inlet end of the solid phase extraction column is provided with a second internal thread that is compatible with the second external thread.

8. A filtration device for assisting a solid-phase extraction column as described in claim 7, characterized in that: A second sealing gasket is provided between the sealing plug and the solid phase extraction column.

9. A filtration device for assisting a solid-phase extraction column as described in claim 1, characterized in that: The top of the filter bottle is provided with a cover, and the cover is provided with a feed inlet.

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