CN108722189B - Filtering device - Google Patents
Filtering device Download PDFInfo
- Publication number
- CN108722189B CN108722189B CN201810930032.XA CN201810930032A CN108722189B CN 108722189 B CN108722189 B CN 108722189B CN 201810930032 A CN201810930032 A CN 201810930032A CN 108722189 B CN108722189 B CN 108722189B
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- CN
- China
- Prior art keywords
- half shell
- filtrate
- lower half
- shell
- filter membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001914 filtration Methods 0.000 title claims abstract description 50
- 239000000706 filtrate Substances 0.000 claims abstract description 164
- 239000012528 membrane Substances 0.000 claims abstract description 112
- 230000008093 supporting effect Effects 0.000 claims abstract description 50
- 238000011084 recovery Methods 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 19
- 238000000605 extraction Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000011070 membrane recovery Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 17
- 150000002500 ions Chemical class 0.000 description 11
- 239000000428 dust Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted 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
- B01D29/52—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 in parallel connection
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a filtering device, and relates to the technical field of separation equipment. Comprises three spherical filter membrane loading shells, a connecting shell, a filtrate recovery bottle, three filter membranes and three support plates; the filter membrane loading shell comprises an upper half shell and a lower half shell; the lower half shell is communicated with the connecting shell; the connecting shell is communicated with the filtrate recovery bottle; one side of the upper half shell is hinged with the lower half shell, and the other side of the upper half shell is detachably connected with the lower half shell; the filter membrane is detachably arranged in the lower half shell and is in close contact with the inner wall of the lower half shell; the supporting plate is detachably arranged in the lower half shell and is in close contact with the inner wall of the lower half shell; the support plate is provided with a plurality of filter membrane support bars for supporting the filter membrane, and a filtrate collecting port communicated with the lower half shell; the filter membrane support bars are arranged at intervals and take a filtrate converging port as a center, and the filter membrane support bars are radially outwards dispersed to the edge of the support plate; the filtering device can reduce cost and enable the sample to be easy to store and carry.
Description
Technical Field
The invention relates to the technical field of separation equipment, in particular to a filtering device.
Background
By analyzing dust ions in the obtained snow ice sample, the atmospheric flow characteristics of the sampling area can be revealed, and the method is an effective way for recovering the atmospheric environment evolution of the area. Through researching sample ions, the time and space change characteristics of the main ion concentration are known, the source place and the propagation path of the ions are discussed, and the method has important significance for restoring the atmospheric circulation situation of the south and north poles and the evolution of an ion source region. Because the ion concentration in the polar snow ice sample is extremely low, if a sufficient number of ion samples are required to be obtained, a large volume of snow ice sample is required, and if the samples are brought back to China for analysis in a laboratory, expensive international air transportation cost and limited sample storage space are faced, and the cost is high and the samples are not easy to store and carry.
Disclosure of Invention
The invention aims to provide a filter device which can reduce cost and facilitate sample preservation and carrying.
In order to achieve the above purpose, the present invention provides the following technical solutions:
according to an aspect of the present invention, there is provided a filtration apparatus comprising three spherical filtration membrane loading housings, a connection housing, a filtrate recovery bottle, three filtration membranes corresponding to the filtration membrane loading housings, and three support plates corresponding to the filtration membranes; the filter membrane loading shell is provided with a sample injection part and a first filtrate outlet part, the connecting shell is provided with three first filtrate inlet parts and second filtrate outlet parts which correspond to the first filtrate outlet parts, and the filtrate recovery bottle is provided with a second filtrate inlet part, an air suction part and a liquid pouring part which correspond to the second filtrate outlet parts; the filter membrane loading shell comprises an upper half shell and a lower half shell;
the lower half shell is communicated with the connecting shell through the first filtrate outlet part and the first filtrate inlet part, and the first filtrate outlet part is detachably connected with the first filtrate inlet part;
the connecting shell is communicated with the filtrate recovery bottle through the second filtrate outlet part and the second filtrate inlet part, and the second filtrate outlet part is detachably connected with the second filtrate inlet part;
one side of the upper half shell is hinged with the lower half shell, and the other side of the upper half shell is detachably connected with the lower half shell so as to open the lower half shell or seal the lower half shell;
the filter membrane is detachably arranged on the inner wall of the lower half shell along the circumferential direction of the lower half shell and is in close contact with the inner wall of the lower half shell;
the support plate is detachably arranged on the inner wall of the lower half shell along the circumferential direction of the lower half shell and is in close contact with the inner wall of the lower half shell;
along the circumference of the supporting plate, a plurality of filter membrane supporting strips for supporting the filter membrane and a filtrate collecting port communicated with the lower half shell are arranged on the supporting plate;
the filter membrane support bars are arranged at intervals and take the filtrate collecting port as the center, and the filter membrane support bars are radially and outwards dispersed to the edge of the support plate.
Further, a plurality of filter membrane supporting bars are arranged at intervals and uniformly.
Further, along the direction from the filtrate collecting port to the edge of the filter membrane supporting bar, the size of the filter membrane supporting bar along the direction perpendicular to the supporting plate is gradually increased.
Further, a strip-shaped liquid outlet through hole communicated with the lower half shell is formed in the supporting plate and positioned between two adjacent filter membrane supporting strips;
and taking the filtrate converging port as a center, a plurality of strip-shaped liquid outlet through holes are radially and outwards dispersed to the edge of the supporting plate, and a distance is arranged between the strip-shaped liquid outlet through holes and the filtrate converging port.
Further, along the circumferential direction of the lower half shell, a clamping groove adapted to the filter membrane is formed in the inner wall of the lower half shell;
the filter membrane is clamped in the clamping groove.
Further, a first groove is formed in the section of the upper half shell, which is in contact with the lower half shell, along the circumferential direction of the upper half shell, and a first sealing ring is arranged in the first groove; a second groove adapted to the first groove is formed in the section of the lower half shell, which is in contact with the upper half shell, along the circumferential direction of the lower half shell, and a second sealing ring is arranged in the second groove;
when the upper half shell seals the lower half shell, the first sealing ring is in close contact with the second sealing ring.
Further, the connecting housing comprises a square first housing and a second housing communicated with the first housing;
the first shell is communicated with the lower half shell, and the second shell is communicated with the filtrate recovery bottle;
the size of the second shell gradually becomes smaller along the direction from the first shell to the filtrate recovery bottle.
Further, the side wall of the second shell is a curved surface recessed into the second shell.
Further, the filtrate recovery bottle comprises a bottle body;
the air extraction opening is arranged on the outer wall of the bottle body and is communicated with the interior of the bottle body, is perpendicular to the outer wall of the bottle body and extends towards the interior of the bottle body to form an inner extension part.
Further, the inner extension is 10mm-20mm long.
According to the filtering device, when the filtering device is used on the field of field scientific investigation, the upper half shell is opened to enable the lower half shell to be in an open state, the filter membrane is arranged on the inner wall of the lower half shell, the filter membrane is tightly contacted with the inner wall of the lower half shell, and the upper half shell is closed to enable the lower half shell to be in a sealed state; sequentially connecting the lower half shell with a connecting shell, and connecting the connecting shell with a filtrate recovery bottle; the sample injection opening is connected with a sample bag filled with a sample through a special silica gel tube, so that a snow ice sample solution to be filtered enters the upper half shell, the filtrate recovery bottle is connected with the vacuum pump through the extraction opening, after the vacuum pump is started, the interior of the filtrate recovery bottle forms a vacuum environment, three filter membranes simultaneously start to filter, dust ions are trapped on the filter membranes, the filtrate flows into the lower half shell through the filtrate collecting opening of the supporting plate, the first filtrate outlet of the lower half shell and the first filtrate inlet of the connecting shell flow into the connecting shell, the second filtrate outlet of the connecting shell and the second filtrate inlet of the filtrate recovery bottle flow into the filtrate recovery bottle, the vacuum pump stops working after the filtrate liquid level is proper, the filtrate in the filtrate recovery bottle flows out through the liquid pouring opening, and the filter membranes are detachably arranged on the inner wall of the lower half shell, so that the filter membranes for trapping dust ions are only required to be brought back to a domestic laboratory for analysis, the difficulty in transporting a large-volume snow ice sample is avoided, cost is reduced, the sample is easy to store and carry, and meanwhile, the filter membranes arranged on the supporting plate can be easily support the filter membranes in the supporting plate for supporting plate to greatly support the filter membrane in the filtration, the filter membrane can be prevented from being damaged due to the impact and the damage of the filter membrane can be also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a filtering device according to an embodiment of the present invention;
FIG. 2 is a longitudinal section of FIG. 1;
FIG. 3 is a schematic view of a filter membrane loading housing in a filter device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a support plate in a filtering device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first gasket in a filtering device according to an embodiment of the present invention;
FIG. 6 is a longitudinal cut of FIG. 5;
fig. 7 is a schematic structural diagram of a connection housing in a filtering device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a filtrate recovery bottle in a filtering device according to an embodiment of the present invention.
Icon: 10-a filter membrane loading housing; 101-an upper half shell; 1011—sample injection port; 1012-a first groove; 1013—a first seal ring; 1014-a seal ring body; 1015-an outer sealing lip; 1016-inner sealing lip; 1017-V grooves; 1018-rubber rings; 102-lower half shell; 1021-a first filtrate outlet portion; 1022-a second groove; 1023-a second seal ring; 20-a connection housing; 201-a first housing; 2011-a first filtrate inlet portion; 202-a second housing; 2021-second filtrate outlet section; 30-a filtrate recovery bottle; 301-bottle body; 3011-a second filtrate inlet portion; 3012-an air extraction port; 3013-an inner extension; 3014-pouring mouth; 40-filtering membrane; 50-supporting plates; 501-a filter membrane support bar; 502-strip liquid outlet through holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
According to an aspect of the present invention, there is provided a filtration apparatus, as shown in fig. 1, 2 and 3, comprising three spherical filter membrane loading housings 10, a connection housing 20, a filtrate recovery bottle 30, three filter membranes 40 corresponding to the filter membrane loading housings 10, and three support plates 50 corresponding to the filter membranes 40; the filter membrane loading housing 10 has a sample injection port 1011 and a first filtrate outlet 1021, and the connection housing 20 has three first filtrate inlet 2011 and second filtrate outlet 2021 corresponding to the first filtrate outlet 1021, and the filtrate collection bottle 30 has a second filtrate inlet 3011, a suction port 3012, and a pouring port 3014 corresponding to the second filtrate outlet 2021; the filter membrane loading housing 10 includes an upper half housing 101 and a lower half housing 102;
the lower half casing 102 communicates with the connection casing 20 through a first filtrate outlet portion 1021 and a first filtrate inlet portion 2011, and the first filtrate outlet portion 1021 is detachably connected with the first filtrate inlet portion 2011;
the connection housing 20 communicates with the filtrate recovery bottle 30 through a second filtrate outlet portion 2021 and a second filtrate inlet portion 3011, the second filtrate outlet portion 2021 being detachably connected to the second filtrate inlet portion 3011;
one side of the upper half shell 101 is hinged with the lower half shell 102, and the other side is detachably connected with the lower half shell 102 so that the upper half shell 101 opens the lower half shell 102 or seals the lower half shell 102;
the filter membrane 40 is detachably mounted on the inner wall of the lower half shell 102 along the circumferential direction of the lower half shell 102 and is in close contact with the inner wall of the lower half shell 102;
the support plate 50 is detachably mounted to the inner wall of the lower half shell 102 along the circumferential direction of the lower half shell 102 and is in close contact with the inner wall of the lower half shell 102;
along the circumferential direction of the supporting plate 50, a plurality of filter membrane supporting strips 501 for supporting the filter membrane 40 and a filtrate collecting port which is positioned in the center of the supporting plate 50 are arranged on the supporting plate 50, and the filtrate collecting port is communicated with the lower half shell 102;
the plurality of filter support bars 501 are spaced apart and are radially outwardly diverged to the edge of the support plate 50 centering on the filtrate collecting port.
According to the filtering device of the present invention, for which the upper half casing 101 is opened so that the lower half casing 102 is in an open state, the filter membrane 40 is mounted on the inner wall of the lower half casing 102, and the filter membrane 40 is in close contact with the inner wall of the lower half casing 102, and the upper half casing 101 is closed so that the lower half casing 102 is in a sealed state when the filtering device is used in a field scientific investigation site; sequentially connecting the lower half shell 102 with the connecting shell 20, and connecting the connecting shell 20 with the filtrate recovery bottle 30; the sample injection port 1011 is connected with a sample bag filled with a sample through a special silica gel tube, so that a snow ice sample solution to be filtered enters the upper half shell 101, the filtrate recovery bottle 30 is connected with a vacuum pump through an extraction port, after the vacuum pump is started, a vacuum environment is formed inside the filtrate recovery bottle 30, three filter membranes 40 simultaneously start to filter, dust ions are trapped on the filter membranes 40 by the filter membranes 40, filtrate flows into the lower half shell 102 through a filtrate collecting port of the support plate 50, flows into the connection shell 20 through a first filtrate outlet 1021 of the lower half shell 102 and a first filtrate inlet 2011 of the connection shell 20, flows into the filtrate recovery bottle 30 through a second filtrate outlet 2021 of the connection shell 20 and a second filtrate inlet 3011 of the filtrate recovery bottle 30, after the filtrate liquid level is proper, the vacuum pump stops working, and the filtrate in the filtrate recovery bottle 30 flows out through a pouring port, and as the filter membranes 40 are detachably arranged on the inner wall of the lower half shell 102, therefore, only the filter membranes 40 for trapping the dust ions need to be brought back to a domestic laboratory for analysis, the cost of transporting a large-volume snow ice sample is avoided, the difficulty is reduced, and the cost of the filter membranes can be prevented from being broken due to the fact that the filter membranes 40 are carried by the support plate 50 is also arranged in the support plate for the support plate 50;
the manner in which the first filtrate outlet 1021 is detachably connected to the first filtrate inlet 2011 includes: the first filtrate outlet section 1021 is in threaded connection with the first filtrate inlet section 2011; the manner in which the second filtrate outlet portion 2021 is detachably connected to the second filtrate inlet portion 3011 includes: the second filtrate outlet portion 2021 is screwed with the second filtrate inlet portion 3011; when the filtration is carried out, the inside of each threaded interface is provided with a thin silica gel sealing gasket; the filter membrane loading shell 10 is a spherical shell;
the support plate 50 is detachably mounted to the inner wall of the lower half shell 102 in a manner including: along the circumference of the lower half shell 102, the inner wall of the lower half shell 102 is provided with a clamping groove, and the supporting plate 50 can be connected in the clamping groove;
preferably, the plurality of filter membrane supporting bars 501 are spaced and uniformly arranged, so that the filter membrane 40 is uniformly supported by the filter membrane supporting bars 501, the filtrate fluid is uniformly distributed on the filter membrane 40, and the damage of the impact force of the filtrate fluid to the filter membrane 40 is further reduced;
preferably, a distance is provided between the filter membrane support bar 501 and the filtrate collecting port, that is, near the filtrate collecting port, the filter membrane support bar 501 has no supporting effect on the filter membrane 40, and compared with the filter membrane part supported by the filter membrane support bar 501, the filter membrane part without the filter membrane support bar 501 is recessed toward the center of the filter membrane due to the influence of gravity of the filtrate, so that the filter membrane is wholly recessed toward the center of the filter membrane, the filtrate is filtered out to the support plate 50 conveniently, and the filtrate is quickly flowed into the lower half shell 102 from the filtrate collecting port conveniently.
According to an embodiment of the filtering apparatus of the present invention, as shown in fig. 3, the size of the filter support bar 501 is gradually increased in a direction perpendicular to the support plate 50 along the direction from the filtrate collecting port to the edge of the filter support bar 501.
According to the filtering device of the invention, the size of the filter membrane supporting bar 501 along the direction perpendicular to the supporting plate 50 gradually increases along the direction from the filtrate collecting port to the edge of the filter membrane supporting bar 501, so that before filtration, the filter membrane supporting bar 501 only has a supporting effect on part of the filter membrane, and when filtration is performed, the filter membrane part which is not supported by the filter membrane supporting bar 501 is recessed towards the center of the filter membrane to be in supporting contact with the filter membrane supporting bar 501 due to the influence of the gravity of the filtrate, so that the whole filter membrane is recessed towards the center of the filter membrane and is supported by the filter membrane supporting bar 501, thereby facilitating the filtration of the filtrate to the supporting plate 50 and the rapid inflow of the filtrate from the filtrate collecting port to the lower half shell 102, and improving the filtration efficiency.
According to one embodiment of the filtering device of the present invention, as shown in fig. 4, a strip-shaped liquid outlet through hole 502 communicated with the lower half shell 102 is formed on the supporting plate 50 and is positioned between two adjacent filtering membrane supporting bars 501;
the filtrate collecting ports are taken as the center, the plurality of strip-shaped liquid outlet through holes 502 are radially outwards dispersed to the edge of the supporting plate 50, and a distance is arranged between the strip-shaped liquid outlet through holes 502 and the filtrate collecting ports.
According to the filtering device of the present invention, in order to accelerate the flow of the filtrate from the supporting plate 50 to the lower half-shell 102, then, between two adjacent filter membrane supporting bars 501, a strip-shaped liquid outlet through hole 502 communicated with the lower half-shell 102 is formed on the supporting plate 50, and the filtrate flows into the lower half-shell 102 from the filtrate collecting port and also flows into the lower half-shell 102 from the strip-shaped liquid outlet through hole 502;
it should be noted that, a distance is provided between the strip-shaped liquid outlet through hole 502 and the filtrate converging port, that is, the strip-shaped liquid outlet through hole 502 is not communicated with the filtrate converging port, so as to avoid the mutual influence of the filtrate.
According to one embodiment of the filtering device of the present invention, a clamping groove adapted to the filter membrane 40 is formed on the inner wall of the lower half shell 102 along the circumferential direction of the lower half shell 102;
the filter membrane 40 is clamped in the clamping groove.
The manner in which the filter membrane 40 is removably mounted to the inner wall of the lower housing half 102 in accordance with the filter apparatus of the present invention includes, for example,
mode one: along the circumferential direction of the lower half shell 102, a clamping groove is formed in the inner wall of the lower half shell 102, namely, the clamping groove is directly formed in the inner wall of the lower half shell 102, and when the filter membrane 40 is used, the filter membrane is clamped in the clamping groove;
mode two: the filter membrane 40 is clamped in the clamping groove when the filter membrane 40 is clamped in the clamping groove in use;
therefore, the purpose of the clamping groove is to fix the filter membrane 40 on the inner wall of the lower half shell 102, so that the impact of the filtrate can be avoided during filtering, the wrinkling and breakage of the filter membrane 40 can be avoided, the cost can be reduced, and the filtering efficiency can be improved.
According to an embodiment of the filtering device of the present invention, as shown in fig. 3, a first groove 1012 is formed in a cross section of the upper half shell 101 contacting the lower half shell 102 along a circumferential direction of the upper half shell 101, and a first sealing ring 1013 is provided in the first groove 1012; along the circumferential direction of the lower half shell 102, a second groove 1022 which is adapted to the first groove 1012 is formed in the section of the lower half shell 102 contacted with the upper half shell 101, and a second sealing ring 1023 is arranged in the second groove 1022;
when the upper half case 101 seals the lower half case 102, the first seal ring 1013 is in close contact with the second seal ring 1023.
According to the filtering device of the present invention, in order to ensure the tightness of the filtering device during the filtration and to increase the filtering efficiency during the filtration, a first sealing ring 1013 is provided at the contact section of the upper half shell 101 and the lower half shell 102, and a second sealing ring 1023 is provided at the contact section of the lower half shell 102 and the upper half shell 101, and when the upper half shell 101 seals the lower half shell 102, the first sealing ring 1013 is closely contacted with the second sealing ring 1023, thereby avoiding the air leakage inside the filter membrane loading shell 10 and affecting the vacuum degree;
wherein the first groove 1012 is used for limiting the first sealing ring 1013, preventing the first sealing ring 1013 from being dislocated, and the second groove 1022 is used for limiting the second sealing ring 1023, preventing the second sealing ring 1023 from being dislocated;
the first sealing ring 1013 and the second sealing ring 1023 may be O-rings, and in addition, the second sealing ring 1023 may be an O-ring, as shown in fig. 5 and 6, the first sealing ring 1013 may be: the first seal ring 1013 includes: seal ring body 1014, outer seal lip 1015, and inner seal lip 1016; an outer sealing lip 1015 and an inner sealing lip 1016 are arranged at the top end of the sealing ring body 1014, a V-shaped groove 1017 is formed between the outer sealing lip 1015 and the inner sealing lip 1016, a rubber ring 1018 is arranged in the V-shaped groove 1017 in a combined manner, and the V-shaped groove 1017 faces the lower half shell 102; during sealing, the outer sealing lip 1015 and the inner sealing lip 1016 are compressed, and because the V-shaped groove 1017 is formed between the outer sealing lip 1015 and the inner sealing lip 1016, the outer sealing lip 1015 and the inner sealing lip 1016 are in contact with the sealing surface and are widened, so that the sealing ring is in contact with the sealing surface and is widened, the sealing effect of the sealing ring is good, meanwhile, the rubber ring 1018 is arranged in the V-shaped groove 1017 in a compounding manner, the extensibility of the outer sealing lip 1015 and the inner sealing lip 1016 during sealing can be improved, and the outer sealing lip 1015 and the inner sealing lip 1016 are in contact with the sealing surface better, so that the sealing effect of the sealing ring is good.
According to one embodiment of the filtering device of the present invention, as shown in fig. 7, the connection housing 20 includes a square-shaped first housing 201 and a second housing 202 communicating with the first housing 201;
the first housing 201 communicates with the lower housing half 102, and the second housing 202 communicates with the filtrate recovery bottle 30;
the size of the second housing 202 gradually becomes smaller in the direction from the first housing 201 to the filtrate recovery bottle 30.
According to the filtering device of the present invention, during filtering, the filtrate flows into the connection housing 20 through the first filtrate outlet portion 1021 of the lower half housing 102 and the first filtrate inlet portion 2011 of the connection housing 20, and during the flow into the connection housing 20, the filtrate flows into the first housing 201, then flows into the second housing 202, and finally flows into the filtrate recovery bottle 30 through the second filtrate outlet portion 2021 of the second housing 202 and the second filtrate inlet portion 3011 of the filtrate recovery bottle 30;
since the size of the second housing 202 gradually decreases along the direction from the first housing 201 to the filtrate recovery bottle 30, the rate of the filtrate entering the filtrate recovery bottle 30 from the first housing 201 increases, and the filtrate can rapidly flow into the filtrate recovery bottle 30, wherein the first housing 201 can serve as a buffer chamber for the filtrate, so that excessive filtrate is prevented from entering the second housing 202 and exceeding the bearing limit of the second housing 202.
Preferably, the side wall of the second housing 202 is a curved surface recessed into the second housing 202, so that the resistance of the side wall of the second housing 202 to the filtrate can be reduced, and the rate of the filtrate flowing into the filtrate recovery bottle 30 can be further increased.
According to one embodiment of the filtering apparatus of the present invention, as shown in fig. 8, the filtrate recovery bottle 30 includes a bottle body 301;
the air extraction opening 3012 is provided on the outer wall of the bottle 301 and communicates with the interior of the bottle 301, and the air extraction opening 3012 is perpendicular to the outer wall of the bottle 301 and extends into the interior of the bottle 301 to form an inner extension 3013.
According to the filtering device, the air extraction opening 3012 extends towards the inside of the bottle 301 to form the inner extension 3013, so that the inner extension 3013 protrudes out of the inner wall of the bottle 301, filtrate can slide down along the inner wall of the bottle 301 and cannot be sucked into the air extraction opening, the filtrate can be prevented from entering the air extraction device through the air extraction opening, and the air extraction device is protected from being corroded by the filtrate; the extraction opening, the inner extension opening and the bottle wall are all arranged vertically, so that the filtrate can be prevented from flowing into the extraction opening to the greatest extent; wherein, the bottle 301 may be a conical bottle 301;
preferably, the inner extension 3013 is 10mm to 20mm long.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The filtering device is characterized by comprising three spherical filter membrane loading shells, a connecting shell, a filter membrane recovery bottle, three filter membranes corresponding to the filter membrane loading shells and three supporting plates corresponding to the filter membranes; the filter membrane loading shell is provided with a sample injection part and a first filtrate outlet part, the connecting shell is provided with three first filtrate inlet parts and second filtrate outlet parts which correspond to the first filtrate outlet parts, and the filtrate recovery bottle is provided with a second filtrate inlet part, an air suction part and a liquid pouring part which correspond to the second filtrate outlet parts; the filter membrane loading shell comprises an upper half shell and a lower half shell;
the lower half shell is communicated with the connecting shell through the first filtrate outlet part and the first filtrate inlet part, and the first filtrate outlet part is detachably connected with the first filtrate inlet part;
the connecting shell is communicated with the filtrate recovery bottle through the second filtrate outlet part and the second filtrate inlet part, and the second filtrate outlet part is detachably connected with the second filtrate inlet part;
one side of the upper half shell is hinged with the lower half shell, and the other side of the upper half shell is detachably connected with the lower half shell so as to open the lower half shell or seal the lower half shell;
the filter membrane is detachably arranged on the inner wall of the lower half shell along the circumferential direction of the lower half shell and is in close contact with the inner wall of the lower half shell;
the support plate is detachably arranged on the inner wall of the lower half shell along the circumferential direction of the lower half shell and is in close contact with the inner wall of the lower half shell;
along the circumference of the supporting plate, a plurality of filter membrane supporting strips for supporting the filter membrane and a filtrate collecting port communicated with the lower half shell are arranged on the supporting plate;
the filter membrane support bars are arranged at intervals and take the filtrate converging port as the center, the filter membrane support bars are radially and outwards dispersed to the edge of the support plate, and a distance is arranged between the filter membrane support bars and the filtrate converging port;
the strip-shaped liquid outlet through holes communicated with the lower half shell are formed in the supporting plates and are positioned between two adjacent filter membrane supporting strips;
taking the filtrate converging port as a center, a plurality of strip-shaped liquid outlet through holes are radially and outwards dispersed to the edge of the supporting plate, and a distance is arranged between the strip-shaped liquid outlet through holes and the filtrate converging port;
the connecting shell comprises a square first shell and a second shell communicated with the first shell;
the first shell is communicated with the lower half shell, and the second shell is communicated with the filtrate recovery bottle;
the size of the second shell gradually becomes smaller along the direction from the first shell to the filtrate recovery bottle;
the side wall of the second shell is a curved surface recessed into the second shell.
2. The filter device of claim 1, wherein a plurality of the filter support strips are spaced apart and uniformly disposed.
3. The filter device according to claim 1, wherein the filter support strips gradually increase in size in a direction perpendicular to the support plates along the direction from the filtrate collecting port to the edges of the filter support strips.
4. The filtering device according to claim 1, wherein a clamping groove which is adapted to the filter membrane is formed on the inner wall of the lower half shell along the circumferential direction of the lower half shell;
the filter membrane is clamped in the clamping groove.
5. The filtering device according to claim 1, wherein a first groove is formed in a cross section of the upper half shell in contact with the lower half shell along a circumferential direction of the upper half shell, and a first sealing ring is arranged in the first groove; a second groove adapted to the first groove is formed in the section of the lower half shell, which is in contact with the upper half shell, along the circumferential direction of the lower half shell, and a second sealing ring is arranged in the second groove;
when the upper half shell seals the lower half shell, the first sealing ring is in close contact with the second sealing ring.
6. The filtration device of claim 1, wherein the filtrate recovery bottle comprises a bottle body;
the air extraction opening is arranged on the outer wall of the bottle body and is communicated with the interior of the bottle body, is perpendicular to the outer wall of the bottle body and extends towards the interior of the bottle body to form an inner extension part.
7. The filter device of claim 6, wherein the inner extension is 10mm-20mm long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930032.XA CN108722189B (en) | 2018-08-15 | 2018-08-15 | Filtering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930032.XA CN108722189B (en) | 2018-08-15 | 2018-08-15 | Filtering device |
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| CN108722189A CN108722189A (en) | 2018-11-02 |
| CN108722189B true CN108722189B (en) | 2023-10-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112717471A (en) * | 2020-12-09 | 2021-04-30 | 深圳拓扑精膜科技有限公司 | Filter device and filter equipment |
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| JPH01155915A (en) * | 1987-12-10 | 1989-06-19 | Costar Corp | Bin filter |
| CN2147894Y (en) * | 1992-11-19 | 1993-12-01 | 倪卫菊 | Disposable millipore filter |
| CN203196412U (en) * | 2013-04-24 | 2013-09-18 | 浙江硕华医用塑料有限公司 | Microporous membrane filter |
| CN203678255U (en) * | 2013-11-22 | 2014-07-02 | 天津市光复科技发展有限公司 | Membrane filter and automatic and rapid membrane filtration device |
| CN208660830U (en) * | 2018-08-15 | 2019-03-29 | 中国科学院寒区旱区环境与工程研究所 | Filter device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008219647B2 (en) * | 2007-02-27 | 2014-07-10 | Deka Products Limited Partnership | Hemodialysis systems and methods |
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2018
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|---|---|---|---|---|
| JPH01155915A (en) * | 1987-12-10 | 1989-06-19 | Costar Corp | Bin filter |
| CN2147894Y (en) * | 1992-11-19 | 1993-12-01 | 倪卫菊 | Disposable millipore filter |
| CN203196412U (en) * | 2013-04-24 | 2013-09-18 | 浙江硕华医用塑料有限公司 | Microporous membrane filter |
| CN203678255U (en) * | 2013-11-22 | 2014-07-02 | 天津市光复科技发展有限公司 | Membrane filter and automatic and rapid membrane filtration device |
| CN208660830U (en) * | 2018-08-15 | 2019-03-29 | 中国科学院寒区旱区环境与工程研究所 | Filter device |
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| CN108722189A (en) | 2018-11-02 |
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