CN114917649A - Multi-volume suction filtration device and suction filtration method - Google Patents
Multi-volume suction filtration device and suction filtration method Download PDFInfo
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- CN114917649A CN114917649A CN202210560159.3A CN202210560159A CN114917649A CN 114917649 A CN114917649 A CN 114917649A CN 202210560159 A CN202210560159 A CN 202210560159A CN 114917649 A CN114917649 A CN 114917649A
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- 238000000967 suction filtration Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000012528 membrane Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 24
- 239000000741 silica gel Substances 0.000 claims description 16
- 229910002027 silica gel Inorganic materials 0.000 claims description 16
- 241000521257 Hydrops Species 0.000 claims description 14
- 206010030113 Oedema Diseases 0.000 claims description 14
- 238000009825 accumulation Methods 0.000 claims description 14
- 230000002572 peristaltic effect Effects 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 3
- 239000004579 marble Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/085—Funnel filters; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/605—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by level measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
Abstract
The invention discloses a multi-volume suction filtration device and a suction filtration method, which belong to the technical field of solid-liquid separation in laboratories and comprise a vacuum bin cover and a vacuum bin, wherein the vacuum bin cover is detachably connected with the vacuum bin, and a large-volume suction filtration assembly or a small-volume suction filtration assembly is arranged in the vacuum bin cover and the vacuum bin, wherein the large-volume suction filtration assembly is filtered by an automatic membrane replacing device or a rough filtration assembly. The device is suitable for filtration treatment of most water samples in a laboratory, particularly has great advantages in filtration of samples with small volume and larger volume in batches, and can be carried out on samples with small volume in batches; to bulky automated design, improve work efficiency, this suction filtration device simple structure, convenient operation can be quick handles the sample, has guaranteed the new freshness of sample, trades the membrane and the use of high low water level inductor is greatly saved the people to bulky automation.
Description
Technical Field
The invention relates to the technical field of solid-liquid separation in laboratories, in particular to a multi-volume suction filtration device and a suction filtration method.
Background
In the water sample sampling investigation, if the content of a certain component in a water sample is to be determined, a preservative is added immediately after sampling, and the sample is sampled and tested after being fully shaken up during analysis and determination; however, the determination of the content of the filterable (dissolved) component is certainly improper by taking supernatant after natural sedimentation to determine the filterable component, which can cause test errors, and the commonly adopted method is that a water sample is filtered by a 0.45 microporous filter membrane to remove algae and bacteria, so that the biological activity in the water sample is greatly reduced and prevented, the stability of the water sample is improved, and the preservation is facilitated.
In sample analysis, especially in liquid chromatography, both the sample to be tested and the mobile phase are filtered through a 0.45 (or 0.22) microporous membrane. This is because any particulate matter entering the HPLC system is blocked at the inlet end by the sieve plate, with the net result of column blockage, increased system pressure and distortion of the chromatographic peak, making the test data unreliable and fatal to the chromatographic column. In a soil column experiment for researching soluble organic matters (DOC, organic TOC passing through a 0.45 filter membrane is called as soluble organic DOC), a large batch of leachate is often required to test the content of the DOC, and a sample is required to be filtered. At present, various testing methods all need to filter collected water samples so as to carry out the next testing analysis.
The present laboratory is to the commonly used filtration method of bulky water sample to psammitolite suction filtration device cooperation vacuum diaphragm pump uses, but the suction filtration in-process needs the experimenter constantly to add the stoste, constantly pours the filtrate in the receiving flask, constantly changes the filter membrane, and the easy misoperation that still appears that not only wastes time and energy. For a plurality of samples, each sample can be cleaned by the filtering device once, and the collecting bottle of the sand core suction filtration device is a narrow-mouth conical bottle, so that the inside of the sand core suction filtration device is difficult to clean, and the next sample is easy to pollute. And after the suction filtration device is removed, the vacuum pumping is carried out again, so that the suction filtration time of the sample is prolonged. Furthermore, the sample volumes to be filtered may vary from one purpose to another, up to several thousand ml, and down to several tens of ml. The method is obviously not applicable to filtering samples with small volume, and the experimenters often adopt a disposable syringe to match with a needle head type filter head to manually and sequentially filter, so that the time and the labor are consumed, and the samples are easily overturned in the filtering process.
Aiming at the defects of the existing water sample suction filtration method, the invention develops and invents a batch type suction filtration device and an operation method which can aim at different sizes and volumes, can ensure the quality of a suction filtration sample, reduce external pollution, are more efficient and convenient, and have wide application space.
Disclosure of Invention
The invention aims to provide a multi-volume suction filtration device and a suction filtration method, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: many volumes suction filtration device, including vacuum cang gai and vacuum storehouse, vacuum cang gai and vacuum storehouse split formula are connected, are equipped with bulky suction filtration subassembly or little volume suction filtration subassembly in vacuum cang gai and the vacuum storehouse, and wherein, bulky suction filtration subassembly relies on automatic membrane device or the coarse filtration subassembly of trading to carry out the sample filtration.
Further, the bottom surface of vacuum storehouse lid is equipped with the rectangle frame, and the top surface in vacuum storehouse is equipped with the rectangular channel, and the cladding has the silica gel pad on the port of rectangle frame, also pastes the silica gel pad on the inner wall of rectangular channel, and the rectangle frame inserts the rectangular channel in, sealing connection between the silica gel pad.
Further, bulky suction filtration subassembly includes adapter assembly, vacuum subassembly and hydrops subassembly, and adapter assembly sets up on the vacuum storehouse lid, and adapter assembly is connected with automatic membrane changing device, increases the coarse filtration subassembly when necessary, and vacuum subassembly and hydrops subassembly set up in the vacuum storehouse.
Further, the joint assembly comprises a joint, a quartz permeable layer, a funnel and a wide-mouth bottle, the joint is embedded into the round hole processed on the vacuum bin cover and is separated in the joint through the quartz permeable layer, the funnel connected to the joint port extends into the vacuum bin, and the wide-mouth bottle is arranged in the vacuum bin and is located under the funnel.
Further, the vacuum assembly comprises a vacuum diaphragm pump, a high water level sensor and a low water level sensor, the vacuum diaphragm pump is communicated with the inner cavity of the vacuum bin through a pipeline, the high water level sensor and the low water level sensor are respectively arranged at the upper end and the lower end of the inner wall of the wide-mouth bottle, and the high water level sensor and the low water level sensor are further connected with the vacuum diaphragm pump through electric wires and used for detecting the work of the liquid level control vacuum diaphragm pump.
Further, the hydrops subassembly includes hydrops bottle, peristaltic pump and silica gel hose, and the hydrops bottle sets up in the outside in vacuum storehouse, and the silica gel hose establishes ties the wide-necked bottle, communicates through the peristaltic pump between hydrops bottle and the wide-necked bottle.
Further, the rough filtering component comprises a rough filtering pipe, a water permeable plate and a glass pipe, the glass pipe is inserted into the sample-holding March flask, the interior of the rough filtering pipe is divided by the water permeable plate, the rough filtering pipe is inserted into the joint, and the sample-holding March flask and the rough filtering pipe are communicated through a pipeline.
Furthermore, the small-volume suction filtration component comprises a joint pipe, a control valve, a needle head type filter membrane, a drainage pipe, a sample frame, a test tube and a small funnel, wherein the joint pipe penetrates through a through hole of the vacuum bin cover and is connected with the drainage pipe, the control valve is arranged on the joint pipe above the vacuum bin cover, the bottom end of the small funnel is separated by the needle head type filter membrane, and liquid flowing out of the small funnel flows into the joint pipe;
the sample frame sets up in the vacuum chamber, and the test tube runs through the sample frame fixed to the test tube is connected with the drainage tube one-to-one, and the vacuum diaphragm pump sets up in the outside in vacuum chamber and communicates with the inner chamber in vacuum chamber.
Furthermore, the automatic film changing device comprises a film changing turntable, a filtering film, a driving motor, a bevel gear, a crankshaft, a first iron ring, a second iron ring and a connecting rod, wherein the driving motor is arranged on the vacuum bin cover, and a shaft of the driving motor penetrates through the circle center of the film changing turntable and is connected with the bevel gear;
the first iron ring and the second iron ring are connected through an iron rod, the first iron ring is sleeved on a shaft of the driving motor, and the second iron ring is sleeved on the sample cup;
the film changing turntable is distributed with a circle of through holes, the filtering film is arranged in the through holes, one end of the crankshaft is meshed with the bevel gear, the other end of the crankshaft is movably connected with the connecting rod, and the other end of the connecting rod is movably connected with the iron rod.
The invention provides another suction filtration method comprising a multi-volume suction filtration device, which comprises the following steps:
s1: selecting suction filtration components and accessories with different sizes according to the suction filtration volume and the turbid state;
s2: to little volume sample, select little volume suction filtration subassembly, the test tube that will compile the number is arranged in on the sample rack and is put into the vacuum chamber, the lid of storehouse is good, close the control valve of storehouse lid upper surface earlier, be connected little funnel and syringe needle formula filter membrane then insert on the adapter tube of vacuum storehouse lid upper surface, the lower extreme of adapter tube passes through the drainage tube just in time with the test tube one-to-one, then add the sample of treating the suction filtration in proper order toward little funnel in proper order, open the control valve, after waiting to examine the leakproofness, open the vacuum diaphragm pump of vacuum chamber lower extreme and begin the suction filtration. After all samples are filtered, the vacuum diaphragm pump is turned off, the test tube is taken out from the vacuum chamber, then the prepared next wave sample is replaced, and the filtering is continued according to the same steps until the filtering is finished, and a plurality of vacuum chamber covers can be simultaneously prepared;
s3: for a large-volume sample, selecting a large-volume suction filtration assembly, arranging two joints on a vacuum bin cover, arranging a thin quartz permeable layer at the upper end of each joint, arranging two wide-mouth bottles connected by a hose in the vacuum bin to be used for receiving the sample, and connecting the wide-mouth bottles with the liquid accumulation bottles through a peristaltic pump of the hose vacuum bin, wherein the lower ends of the joints are funnel-shaped and extend to the vacuum bin through the bin cover;
s4: if the sample is turbid or has more suspended matters, a coarse filtration assembly is added on the sample loading cup, conventional quantitative filter paper is paved on the water permeable plate, the sample is subjected to coarse filtration, the suspended matters and large-particle precipitates are filtered, the conventional quantitative filter paper can be replaced by tweezers at any time, the precise filter paper is replaced by a device for automatically replacing the membrane, when the pressure sensor monitors that the pressure on the upper surface of the filter membrane is reduced, a driving motor connected with the sensor is started, the driving motor rotates to drive a crankshaft to rotate, a connecting rod drives the sample cup to move up and down when making a circular track, and in the process of moving up and down, through holes of a membrane replacing turntable rotate to be replaced;
s5: the mahalanobis bottle of dress appearance dress treats filterable sample, and adjust the glass pipe of mahalanobis bottle upper end and make the liquid level in the dress appearance cup suitable (be higher than filter paper 3-5cm), introduce the sample into dress appearance cup through the hose, after waiting to examine the leakproofness, open the vacuum diaphragm pump and carry out the suction filtration, simultaneously, the mahalanobis bottle is continuous to supply in the dress appearance cup and treat the filtration sample, let the liquid level be at suitable height all the time, along with going on of suction filtration, treat that the wide-necked bottle sample face reaches high water level response, the vacuum stop work this moment, the peristaltic pump of connecting the hydrops bottle begins to start, and lead out the sample in the wide-necked bottle, collect the hydrops bottle, this step circulates, until the sample suction filtration finishes.
Compared with the prior art, the invention has the beneficial effects that:
1. the multi-volume suction filtration device and the suction filtration method provided by the invention are suitable for filtration treatment of most water samples in a laboratory, and particularly have great advantages in filtration of batch samples with small volume and larger volume (such as 5ml of small volume, 10L of large volume and the like), and can be carried out on samples with small volume in batch; to bulky automated design, improve work efficiency, this suction filtration device simple structure, convenient operation can be quick handles the sample, has guaranteed the new freshness of sample, uses manpower sparingly to the very big degree of use of bulky automation membrane and high low water level inductor of trading.
Drawings
FIG. 1 is a perspective view of a small volume suction filtration assembly of the present invention;
FIG. 2 is a perspective view of a high volume suction filtration assembly of the present invention;
FIG. 3 is a structural view of an automatic film changer according to the present invention;
FIG. 4 is a diagram of the film changing state of the automatic film changing device of the present invention.
In the figure: 1. a vacuum bin cover; 2. a vacuum bin; 3. a large-volume suction filtration assembly; 31. a joint assembly; 311. a joint; 312. a quartz permeable layer; 313. a funnel; 314. a jar; 33. a vacuum assembly; 331. a vacuum diaphragm pump; 332. a high water level sensor; 333. a low water level sensor; 34. a liquid accumulation assembly; 341. a liquid accumulation bottle; 342. a peristaltic pump; 343. a silica gel hose; 4. a small volume suction filtration assembly; 41. a joint pipe; 42. a control valve; 43. a needle type filter membrane; 44. a drainage tube; 45. a sample holder; 46. a test tube; 47. a small funnel; 5. an automatic film changing device; 51. a film changing turntable; 52. a filtration membrane; 53. a drive motor; 54. a bevel gear; 55. a crankshaft; 56. a first iron ring; 57. a second iron ring; 58. a connecting rod; 6. a coarse filtration component; 61. a coarse filtration pipe; 62. a water permeable plate; 63. filling a Ma's bottle; 64. a glass tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Many volumes suction filtration device, including vacuum cang gai 1 and vacuum storehouse 2, vacuum cang gai 1 is connected with 2 split formulas in vacuum storehouse, is equipped with bulky suction filtration subassembly 3 or little volume suction filtration subassembly 4 in vacuum cang gai 1 and the vacuum storehouse 2, and wherein, bulky suction filtration subassembly 3 filters through automatic membrane device 5 or the coarse filtration subassembly 6 of trading.
The first embodiment is as follows:
referring to fig. 2, the structure of the large-volume pumping module 3 is as follows:
the bottom surface of vacuum storehouse lid 1 is equipped with the rectangle frame, and the top surface of vacuum storehouse 2 is equipped with the rectangular channel, and the cladding has the silica gel pad on the port of rectangle frame, has also pasted the silica gel pad on the inner wall of rectangular channel, and the rectangle frame inserts the rectangular channel in, sealing connection between the silica gel pad.
The large-volume suction filtration assembly 3 comprises a joint assembly 31, a vacuum assembly 33 and a liquid accumulation assembly 34, wherein the joint assembly 31 is arranged on the vacuum bin cover 1, the joint assembly 31 is connected with the automatic membrane replacing device 5, a coarse filtration assembly 6 is added when necessary, and the vacuum assembly 33 and the liquid accumulation assembly 34 are arranged in the vacuum bin 2.
The joint component 31 comprises a joint 311, a quartz permeable layer 312, a funnel 313 and a wide-mouth bottle 314, the joint 311 is embedded in a round hole processed on the vacuum bin cover 1, the joint 311 is internally separated by the quartz permeable layer 312, the funnel 313 connected to the port of the joint 311 extends into the vacuum bin 2, and the wide-mouth bottle 314 is arranged in the vacuum bin 2 and is positioned under the funnel 313.
The vacuum assembly 33 comprises a vacuum diaphragm pump 331, a high water level sensor 332 and a low water level sensor 333, the vacuum diaphragm pump 331 is communicated with the inner cavity of the vacuum chamber 2 through a pipeline, the high water level sensor 332 and the low water level sensor 333 are respectively arranged at the upper end and the lower end of the inner wall of the wide-mouth bottle 314, and the high water level sensor 332 and the low water level sensor 333 are also connected with the vacuum diaphragm pump 331 through electric wires and used for detecting the work of the liquid level control vacuum diaphragm pump 331 and controlling the start and stop of the pump.
Referring to fig. 3, the rough filtering assembly 6 includes a rough filtering pipe 61, a permeable plate 62, and a glass pipe 64, the glass pipe 64 is inserted into the mahalanobis bottle 63, the rough filtering pipe 61 is partitioned by the permeable plate 62, the rough filtering pipe 61 is inserted into the joint 311, the mahalanobis bottle 63 and the rough filtering pipe 61 are communicated through a pipeline, the permeable plate 62 is laid with conventional quantitative filter paper, the quantitative filter paper is divided into three types of fast (80-120), (medium speed 30-50), and slow (1-3), and the appropriate filter paper is selected according to the state of the sample. The lower circumference is concave, a sealing ring is arranged in the concave, and good contact can be ensured when the sample cup is buckled on the sample cup. Coarse filter assembly 6's setting can carry out rough filtration to the sample earlier, has reduced further filterable degree of difficulty.
Referring to fig. 4, the automatic film changing device 5 includes a film changing turntable 51, a filtering film 52, a driving motor 53, a bevel gear 54, a crankshaft 55, a first iron ring 56, a second iron ring 57 and a connecting rod 58, the driving motor 53 is installed on the vacuum chamber cover 1, and a shaft of the driving motor 53 penetrates through the circle center of the film changing turntable 51 and is connected with the bevel gear 54;
the first iron ring 56 is connected with the second iron ring 57 through an iron rod, the first iron ring 56 is sleeved on a shaft of the driving motor 53, and the second iron ring 57 is sleeved on the sample cup;
the film changing turntable 51 is distributed with a circle of through holes, the filtering film 52 is arranged in the through holes, the pressure sensor is arranged at the position of about 1cm above the upper surface of the filtering film 52, one end of the crankshaft 55 is meshed with the bevel gear 54, the other end of the crankshaft 55 is movably connected with the connecting rod 58, and the other end of the connecting rod 58 is movably connected with the iron rod.
If the sample is turbid or has more suspended matters, a coarse filtration component 6 is added on the sample loading cup, conventional quantitative filter paper is paved on the water permeable plate 62, the sample is coarsely filtered, the suspended matters and large-particle precipitates are filtered, the conventional quantitative filter paper can be replaced by tweezers at any time, the precise filter paper is replaced by using the automatic membrane replacing device 5, when the pressure sensor monitors that the pressure on the upper surface of the filter membrane 52 is reduced, the driving motor 53 connected with the sensor is started, the driving motor 53 rotates to drive the crankshaft 55 to rotate, the connecting rod 58 drives the sample cup to move up and down when doing a circular track, in the process of moving up and down, the through hole of the membrane replacing turntable 51 rotates to replace, the membrane replacing turntable 51 rotates to replace the membrane by adopting the same power, and meanwhile, the sample cup can move up and down to avoid influencing the rotation of the membrane replacing turntable 51;
the sample loading Marble's bottle 63 is filled with a sample to be filtered, the glass tube 64 at the upper end of the sample loading Marble's bottle 63 is adjusted to enable the liquid level in the sample loading cup to be appropriate (higher than 3-5cm of filter paper), the sample is guided into the sample loading cup through a hose, after the tightness is checked, the vacuum diaphragm pump 331 is opened for suction filtration, meanwhile, the sample to be filtered is continuously supplemented into the sample loading cup by the sample loading Marble's bottle 63, the liquid level is always appropriate, along with the suction filtration, the sample level of the wide-mouth bottle 314 reaches high-water-level induction, at the moment, the vacuum diaphragm pump 331 stops working, the peristaltic pump 342 connected with the liquid accumulation bottle 341 starts to be started, the sample in the wide-mouth bottle 314 is guided out, the liquid accumulation bottle 341 is collected, and the step is circulated until the suction filtration of the sample is finished.
Example two:
4 structures of small-volume suction filtration assembly:
referring to fig. 1, the small-volume suction filtration assembly 4 includes a connector tube 41, a control valve 42, a needle-type filter membrane 43, a drainage tube 44, a sample holder 45, a test tube 46 and a small funnel 47, the connector tube 41 penetrates through a through hole of the vacuum chamber cover 1 and is connected with the drainage tube 44, the control valve 42 is arranged on the connector tube 41 above the vacuum chamber cover 1, the bottom end of the small funnel 47 is separated by the needle-type filter membrane 43, and liquid flowing out from the small funnel 47 flows into the connector tube 41;
the sample holder 45 is disposed in the vacuum chamber 2, the test tubes 46 are fixed through the sample holder 45, and the test tubes 46 are connected with the drainage tubes 44 in a one-to-one correspondence, and the vacuum diaphragm pumps 331 are disposed outside the vacuum chamber 2 and communicate with the inner cavity of the vacuum chamber 2.
The device is installed, treats that the gas tightness inspection is good back, connects syringe needle formula filter membrane 43 on the adapter tube 41, adjusts adjusting switch 4 to suitable angle, and control valve 42 is used for controlling suction filtration speed, and the open-ended test tube 46 of compiling good number of putting on the sample frame 45 will treat that the filtrating pours into little funnel 47 in order, opens vacuum diaphragm pump 331 and carries out the suction filtration.
And after the first stirring is finished, opening the vacuum bin cover 1, taking out the sample rack 45 and the test tube 46, simultaneously replacing the prepared sample rack 45 and the prepared test tube 46, covering another prepared vacuum bin cover 1, and continuing to stir the samples in sequence until the pumping filtration is finished.
In conclusion; the multi-volume suction filtration device and the suction filtration method are suitable for filtration treatment of most water samples in a laboratory, and particularly have great advantages in the filtration of batch samples with small volume and larger volume (such as 5ml of small volume and 10L of large volume) and can be carried out on the samples with small volume in batch; to bulky automated design, improve work efficiency, this suction filtration device simple structure, convenient operation can be quick handles the sample, has guaranteed the new freshness of sample, uses manpower sparingly to the very big degree of use of bulky automation film changing and high low water level inductor.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. Many volumes suction filtration device, its characterized in that, including vacuum cang gai (1) and vacuum storehouse (2), vacuum cang gai (1) and vacuum storehouse (2) split formula are connected, are equipped with bulky suction filtration subassembly (3) or little volume suction filtration subassembly (4) in vacuum cang gai (1) and vacuum storehouse (2), and wherein, bulky suction filtration subassembly (3) are filtered through automatic membrane device (5) or coarse filtration subassembly (6) of trading.
2. The multi-volume suction filtration device according to claim 1, wherein a rectangular frame is arranged on the bottom surface of the vacuum chamber cover (1), a rectangular groove is arranged on the top surface of the vacuum chamber (2), a silica gel pad is coated on the port of the rectangular frame, the silica gel pad is also adhered to the inner wall of the rectangular groove, the rectangular frame is inserted into the rectangular groove, and the silica gel pads are hermetically connected.
3. A multi-volume suction filtration device according to claim 1, wherein the large-volume suction filtration module (3) comprises a joint module (31), a vacuum module (33) and a liquid accumulation module (34), the joint module (31) is arranged on the vacuum chamber cover (1), the joint module (31) is connected with the automatic membrane changing device (5) or the rough filtration module (6), and the vacuum module (33) and the liquid accumulation module (34) are arranged in the vacuum chamber (2).
4. A multi-volume suction filtration device according to claim 3, wherein the joint assembly (31) comprises a joint (311), a quartz water-permeable layer (312), a funnel (313) and a wide-mouth bottle (314), the joint (311) is embedded in a circular hole processed on the vacuum chamber cover (1), the joint (311) is separated by the quartz water-permeable layer (312), the funnel (313) connected to the port of the joint (311) extends into the vacuum chamber (2), and the wide-mouth bottle (314) is arranged in the vacuum chamber (2) and is positioned right below the funnel (313).
5. The multi-volume suction filtration device according to claim 3, wherein the vacuum assembly (33) comprises a vacuum diaphragm pump (331), a high water level sensor (332) and a low water level sensor (333), the vacuum diaphragm pump (331) is communicated with the inner cavity of the vacuum chamber (2) through a pipeline, the high water level sensor (332) and the low water level sensor (333) are respectively arranged at the upper end and the lower end of the inner wall of the wide-mouth bottle (314), and the high water level sensor (332) and the low water level sensor (333) are also in electric connection with the vacuum diaphragm pump (331) through electric wires for detecting the liquid level and controlling the operation of the vacuum diaphragm pump (331).
6. The multi-volume suction filtration device according to claim 3, wherein the liquid accumulation assembly (34) comprises a liquid accumulation bottle (341), a peristaltic pump (342) and a silica gel hose (343), the liquid accumulation bottle (341) is arranged outside the vacuum chamber (2), the silica gel hose (343) is connected with the wide-mouth bottle (314) in series, and the liquid accumulation bottle (341) is communicated with the wide-mouth bottle (314) through the peristaltic pump (342).
7. A multiple-volume suction filtration apparatus according to claim 1, wherein the strainer assembly (6) comprises a strainer tube (61), a water permeable plate (62) and a glass tube (64), the glass tube (64) is inserted into the muffle (63), the interior of the strainer tube (61) is partitioned by the water permeable plate (62), and the strainer tube (61) is inserted into the connector (311), and the muffle (63) and the strainer tube (61) are communicated with each other by a pipe.
8. The multi-volume suction filtration device according to claim 1, wherein the small-volume suction filtration component (4) comprises a connector tube (41), a control valve (42), a needle type filter membrane (43), a drainage tube (44), a sample holder (45), a test tube (46) and a small funnel (47), the connector tube (41) penetrates through a through hole of the vacuum chamber cover (1) to be connected with the drainage tube (44), the control valve (42) is arranged on the connector tube (41) above the vacuum chamber cover (1), the bottom end of the small funnel (47) is separated by the needle type filter membrane (43), and liquid flowing out of the small funnel (47) flows into the connector tube (41);
sample frame (45) set up in vacuum storehouse (2), and test tube (46) run through sample frame (45) and fix to test tube (46) are connected with drainage tube (44) one-to-one, and vacuum diaphragm pump (331) set up in the outside of vacuum storehouse (2) and with the inner chamber intercommunication in vacuum storehouse (2).
9. The multi-volume suction filtration device according to claim 1, wherein the automatic film changing device (5) comprises a film changing turntable (51), a filtering film (52), a driving motor (53), a bevel gear (54), a crankshaft (55), a first iron ring (56), a second iron ring (57) and a connecting rod (58), wherein the driving motor (53) is arranged on the vacuum bin cover (1), and the shaft of the driving motor (53) penetrates through the circle center of the film changing turntable (51) and is connected with the bevel gear (54);
the first iron ring (56) is connected with the second iron ring (57) through an iron rod, the first iron ring (56) is sleeved on a shaft of the driving motor (53), and the second iron ring (57) is sleeved on the sample cup;
the film changing turntable (51) is distributed with a circle of through holes, the filtering film (52) is arranged in the through holes, one end of a crankshaft (55) is meshed with the bevel gear (54), the other end of the crankshaft (55) is movably connected with a connecting rod (58), and the other end of the connecting rod (58) is movably connected with an iron rod.
10. The method of suction filtration of a multi-volume suction filtration device of claim 1, comprising the steps of:
s1: selecting suction filtration components and accessories with different sizes according to the suction filtration volume and the turbid state;
s2: to little volume sample, select little volume suction filtration subassembly, the test tube that will compile the number is arranged in on the sample rack and is put into the vacuum chamber, the lid of storehouse is good, close the control valve of storehouse lid upper surface earlier, be connected little funnel and syringe needle formula filter membrane then insert on the adapter tube of vacuum storehouse lid upper surface, the lower extreme of adapter tube passes through the drainage tube just in time with the test tube one-to-one, then add the sample of treating the suction filtration in proper order toward little funnel in proper order, open the control valve, after waiting to examine the leakproofness, open the vacuum diaphragm pump of vacuum chamber lower extreme and begin the suction filtration. After all samples are filtered, the vacuum diaphragm pump is turned off, the test tube is taken out from the vacuum chamber, then the prepared next wave sample is replaced, and the filtering is continued according to the same steps until the filtering is finished, and a plurality of vacuum chamber covers can be simultaneously prepared;
s3: for a large-volume sample, selecting a large-volume suction filtration assembly, arranging two joints on a vacuum bin cover, arranging a thin quartz permeable layer at the upper end of each joint, arranging two wide-mouth bottles connected by a hose in the vacuum bin to be used for receiving the sample, and connecting the wide-mouth bottles with the liquid accumulation bottles through a peristaltic pump of the hose vacuum bin, wherein the lower ends of the joints are funnel-shaped and extend to the vacuum bin through the bin cover;
s4: if the sample is turbid or the suspended matters are more, a coarse filtration component is added on the sample loading cup, conventional quantitative filter paper is laid on the water permeable plate, the sample is subjected to coarse filtration, the suspended matters and large-particle precipitates are filtered, the conventional quantitative filter paper can be replaced by tweezers at any time, the precise filter paper is replaced by an automatic membrane replacing device, when a pressure sensor monitors that the pressure on the upper surface of the filter membrane is reduced, a driving motor connected with the sensor is started, the driving motor rotates to drive a crankshaft to rotate, a connecting rod drives the sample cup to move up and down when doing a circular track, and in the process of moving up and down, through holes of a membrane replacing turntable rotate to be replaced;
s5: the mahalanobis bottle of dress appearance dress treats filterable sample, and adjust the glass pipe of mahalanobis bottle upper end and make the liquid level in the dress appearance cup suitable (be higher than filter paper 3-5cm), introduce the sample into dress appearance cup through the hose, after waiting to examine the leakproofness, open the vacuum diaphragm pump and carry out the suction filtration, simultaneously, the mahalanobis bottle is continuous to supply in the dress appearance cup and treat the filterable sample, let the liquid level also suitable height all the time, along with going on of suction filtration, treat that the wide-necked bottle sample face reaches high water level response, the vacuum stop work this moment, the peristaltic pump of connecting the hydrops bottle begins to start, and lead out the sample in the wide-necked bottle, collect the hydrops bottle, this step circulates, until the sample suction filtration finishes.
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| CN202210560159.3A CN114917649A (en) | 2022-05-23 | 2022-05-23 | Multi-volume suction filtration device and suction filtration method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205719717U (en) * | 2016-04-15 | 2016-11-23 | 中国水产科学研究院黄海水产研究所 | The electronic Suction filtration device of a kind of automatization |
| CN110975374A (en) * | 2019-12-23 | 2020-04-10 | 内蒙古科技大学 | A quick suction filter device for detecting low concentration heavy metal element |
| CN211069216U (en) * | 2019-07-29 | 2020-07-24 | 杭州中旺科技有限公司 | Multi-connected vacuum suction filter |
| CN212532996U (en) * | 2020-05-19 | 2021-02-12 | 西安交通大学 | Automatic water sample microorganism collecting device |
| CN215609851U (en) * | 2021-04-02 | 2022-01-25 | 新疆昌源水务科学研究院（有限公司） | Multifunctional filtering device for water quality detection in laboratory |
-
2022
- 2022-05-23 CN CN202210560159.3A patent/CN114917649A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205719717U (en) * | 2016-04-15 | 2016-11-23 | 中国水产科学研究院黄海水产研究所 | The electronic Suction filtration device of a kind of automatization |
| CN211069216U (en) * | 2019-07-29 | 2020-07-24 | 杭州中旺科技有限公司 | Multi-connected vacuum suction filter |
| CN110975374A (en) * | 2019-12-23 | 2020-04-10 | 内蒙古科技大学 | A quick suction filter device for detecting low concentration heavy metal element |
| CN212532996U (en) * | 2020-05-19 | 2021-02-12 | 西安交通大学 | Automatic water sample microorganism collecting device |
| CN215609851U (en) * | 2021-04-02 | 2022-01-25 | 新疆昌源水务科学研究院（有限公司） | Multifunctional filtering device for water quality detection in laboratory |
Non-Patent Citations (2)
| Title |
|---|
| 明亮等: "《医用实验化学》", 31 January 2022, 东南大学出版社, pages: 118 * |
| 薛典民等: "《钢铁工业设备液压与润滑论文选集》", 30 September 2001, 冶金工业出版社, pages: 368 * |
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