CN109173338B - Device for extracting nitrosamine compounds - Google Patents
Device for extracting nitrosamine compounds Download PDFInfo
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- CN109173338B CN109173338B CN201810983225.1A CN201810983225A CN109173338B CN 109173338 B CN109173338 B CN 109173338B CN 201810983225 A CN201810983225 A CN 201810983225A CN 109173338 B CN109173338 B CN 109173338B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
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Abstract
The invention discloses a device for extracting nitrosamine compounds, and particularly relates to the field of laboratory instruments. The invention has the advantage of accelerating the flow of fraction or gaseous solvent in the pipeline, thereby improving the extraction efficiency.
Description
Technical Field
The invention relates to the field of laboratory instruments, in particular to a device for extracting nitrosamine compounds.
Background
Nitrosamines are one type of N-nitroso compound having the general structureR2(R1) N-N ═ O, which has different vapor pressures depending on their molecular weights, can be distilled off with water vapor and is known as volatile nitrosamines as determined by gas chromatography, and conversely is nonvolatile nitrosamines. In recent years, it has been found in drinking water, water bodies subjected to pollution treatment and sterilization, and foods such as pickled vegetables and meat products. Excessive amounts of food containing nitrosamine compounds taken in one time can cause acute toxicity, and the international agency for research on cancer (IARC) in 1987 has defined nitrosamines as food contaminants that are strongly carcinogenic.
At present, when 10 nitrosamine compounds in meat products are measured, a steam distillation extraction method and a liquid-liquid extraction method can be combined into a whole, so that the experimental steps are reduced, and the extraction solvent is saved. However, in the course of practical use, there are also accompanying problems. Such as: because the temperature in the pipeline is less than the heat source temperature, if the flow rate of fraction is comparatively slow on the pipeline, can make the time that the fraction is detained on the pipeline increase, and then make the fraction flow back to the container of splendid attire sample liquid because of the liquefaction easily when the circulation in, be unfavorable for improving experimental efficiency.
Disclosure of Invention
The invention provides a device for extracting nitrosamine compounds, which has the advantage of accelerating the flow of distillate or gaseous solvent in a pipeline, thereby improving the extraction efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
a device for extracting nitrosamine compounds comprises a sample liquid containing bottle, a solvent containing bottle, a condensing device for condensing distillate, a liquid separating device for standing and separating the distillate, a first vent pipe communicated with the solvent containing bottle, a second vent pipe communicated with the sample liquid containing bottle and a flow promoting device for accelerating the gas flow in the first vent pipe or the second vent pipe; the flow promoting device comprises a first flow promoting mechanism and a second flow promoting mechanism; the first flow promoting mechanism comprises a first flow promoting pipe communicated with the first vent pipe, a first fixed convex ring arranged on the inner wall of the first flow promoting pipe, a first elastic part, a first baffle plate arranged in the inner cavity of the first flow promoting pipe in a sliding way, and a first pressing part generating negative pressure to promote the gas flow in the first flow promoting pipe; one end of the first elastic piece is fixed with the first fixed convex ring, the other end of the first elastic piece is fixed with the first blocking piece, a first blocking piece is fixedly arranged on the inner pipe wall of the first flow promoting pipe, and correspondingly, the first blocking piece is provided with a first notch matched with the first blocking piece; the second flow promoting mechanism comprises a second flow promoting pipe communicated with the first vent pipe and the first flow promoting pipe, a second fixed convex ring arranged on the inner wall of the second flow promoting pipe, a second elastic part, a second baffle arranged in the inner cavity of the second flow promoting pipe in a sliding way, and a second pressure applying part for generating negative pressure to promote the gas flow in the second flow promoting pipe; one end of the second elastic piece is fixed with the second fixed convex ring, the other end of the second elastic piece is fixed with the second blocking piece, a second blocking piece is fixedly arranged on the inner pipe wall of the second flow promoting pipe, and correspondingly, the second blocking piece is provided with a second notch matched with the second blocking piece; the first baffle is positioned on the right side of the first fixed convex ring, and the second baffle is positioned on the right side of the second fixed convex ring.
Preferably, the first pressing member comprises a first slide cavity pipe communicated with the first flow promoting pipe, a first piston rod arranged in the first slide cavity pipe in a sliding manner, and a first rotating wheel, and the first rotating wheel is rotatably connected with the edge of the first piston rod; the second pressure applying part comprises a second sliding cavity pipe communicated with the second flow promoting pipe, a second piston rod arranged in the second sliding cavity pipe in a sliding mode and a second rotating wheel, and the second rotating wheel is rotatably connected with the edge of the second piston rod; the invention also comprises a driving device, a rotating shaft and a fixed block, wherein the driving device is used for driving the first rotating wheel and the second rotating wheel to rotate simultaneously; the connecting point of the first rotating wheel and the first piston rod is a first connecting point, the connecting point of the second rotating wheel and the second piston rod is a second connecting point, and the first connecting point and the second connecting point have a height difference in the vertical direction.
Preferably, the number of the flow promoting devices is two, and one end of the second vent pipe, which faces away from the sample liquid containing bottle, is communicated with the flow promoting devices; one end of the flow promoting device, where steam flows out, is an air outlet end which is communicated with the round extraction bottle, and fan blades for accelerating uniform mixing of fractions and the solvent are arranged in the round extraction bottle.
Preferably, the condensing device comprises an outer sleeve, a middle sleeve, an inner sleeve, a water outlet pipe and a water inlet pipe; the middle sleeve is communicated with the extraction round bottle, a gap for passing condensed water is formed between the outer sleeve and the middle sleeve, a spiral cooling water pipe is arranged in the inner sleeve, the water inlet pipe is communicated with the cooling water pipe, and the water outlet pipe is communicated with the gap.
Preferably, the liquid separating device comprises a liquid separating bottle, a solvent outflow pipe and a distillate outflow pipe, the liquid separating bottle is communicated with the middle sleeve, the liquid separating bottle is communicated with the solvent containing bottle through the solvent outflow pipe, the liquid separating bottle is communicated with the sample liquid containing bottle through the distillate outflow pipe, and the connecting point of the liquid separating bottle and the solvent containing bottle is higher than the connecting point of the liquid separating bottle and the sample liquid containing bottle.
Preferably, the device further comprises a fixing device, the fixing device comprises a fixing seat, two first telescopic fixing rods and two second telescopic fixing rods, the two first telescopic fixing rods are detachably fixed with the sample liquid containing bottle and the solvent containing bottle respectively, and the two second telescopic fixing rods are detachably fixed with the middle sleeve.
Preferably, the driving device comprises a driving motor, a driving wheel, a driven wheel, a connecting rod and a first umbrella-shaped transmission gear fixed with the rotating shaft, one end of the connecting rod is fixed with the driven wheel, the other end of the connecting rod is provided with a second umbrella-shaped transmission gear meshed with the first umbrella-shaped transmission gear, the driving wheel is meshed with the driven wheel, and the output end of the driving motor is fixed with the central part of the driving wheel.
Preferably, the device further comprises a first fixing rod for fixing the driving wheel and a second fixing rod for fixing the driven wheel, one end of the first fixing rod is rotatably connected with the driving wheel, the other end of the first fixing rod is fixed with the second telescopic fixing rod, one end of the second fixing rod is rotatably connected with the driven wheel, and the other end of the second fixing rod is fixed with the second telescopic fixing rod.
Preferably, the solvent containing bottle is provided with a liquid outlet head for pouring the extraction mixed liquid.
Preferably, the sample liquid holding bottle is provided with a liquid outlet for pouring the sample liquid.
The invention has the beneficial effects that:
in the invention, the flow accelerating device is arranged to accelerate the air flow in the first vent pipe and the second vent pipe, so that the residence time of fractions and gaseous solvents on the pipelines is reduced, and the reflux of the fractions and the gaseous solvents due to liquefaction is prevented, thereby being more beneficial to improving the extraction efficiency.
Drawings
FIG. 1 is a schematic view of an apparatus for extracting nitrosamine compounds according to the present embodiment;
FIG. 2 is a schematic view showing the structure of an apparatus for extracting nitrosamine compounds according to the present embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic cross-sectional view of an apparatus for extracting nitrosamines according to the present embodiment;
FIG. 5 is an enlarged view of the portion C of FIG. 4;
FIG. 6 is an enlarged view of section D of FIG. 5;
FIG. 7 is a schematic sectional view of an apparatus for extracting nitrosamines according to the present embodiment;
FIG. 8 is an enlarged view of section E of FIG. 7;
FIG. 9 is a schematic cross-sectional view of an apparatus for extracting nitrosamines according to the present embodiment;
fig. 10 is an enlarged view of a portion B in fig. 9.
In the figure: 1. a solvent containing bottle 11, a first vent pipe 12, a first flow promoting pipe 121, a first rotating wheel 122, a first piston rod 123, a first slide cavity pipe 13, a second flow promoting pipe 131, a second rotating wheel 132, a second piston rod 133, a second slide cavity pipe 14, a fixing block 15, a rotating shaft 2, an extraction round bottle 21, a fan blade 31, an outer sleeve 32, a middle sleeve 33, an inner sleeve 34, a cooling water pipe 35, a water outlet pipe 36, a water inlet pipe 41, a liquid separating bottle 43, a solvent outlet pipe 44, a distillate outlet pipe 5, a sample liquid containing bottle 51, a second vent pipe 61, a second fixing convex ring 62, a second elastic member 63, a second baffle 64, a second block 65, a first baffle 66, a first elastic member 67, a first block 68, a first fixing convex ring 71, a fixing seat 72 and a first telescopic fixing rod, 73. a second telescopic fixed rod 81, a driving wheel 82/83, a driven wheel 860, a first fixed rod 85, a connecting rod 86, a second umbrella-shaped transmission gear 84, a second fixed rod 87 and a first umbrella-shaped transmission gear.
Detailed Description
The embodiment provides a technical scheme:
as shown in fig. 1 to 10, a device for extracting nitrosamine compounds comprises a sample liquid containing bottle 5, a solvent containing bottle 1, a condensing device for condensing distillate, a liquid separating device for standing and separating distillate, a first vent pipe 11 communicated with the solvent containing bottle 1, a second vent pipe 51 communicated with the sample liquid containing bottle 5, and a flow promoting device for accelerating the gas flow in the first vent pipe 11 or the second vent pipe 51; the flow promoting device comprises a first flow promoting mechanism and a second flow promoting mechanism; the first flow promoting mechanism comprises a first flow promoting pipe 12 communicated with the first vent pipe 11, a first fixed convex ring 68 arranged on the inner wall of the first flow promoting pipe 12, a first elastic member 66, a first baffle 65 arranged in a sliding way in the inner cavity of the first flow promoting pipe 12 and a first pressing member generating negative pressure to promote the gas flow in the first flow promoting pipe 12; one end of the first elastic member 66 is fixed to the first fixing convex ring 68, the other end is fixed to the first blocking piece 65, a first blocking block 67 is fixedly arranged on the inner pipe wall of the first flow promoting pipe 12, and correspondingly, the first blocking piece 65 is provided with a first notch matched with the first blocking block 67; the second flow promoting mechanism comprises a second flow promoting pipe 13 communicated with the first vent pipe 11 and the first flow promoting pipe 12, a second fixed convex ring 61 arranged on the inner wall of the second flow promoting pipe 13, a second elastic part 62, a second baffle 63 arranged in a sliding way in the inner cavity of the second flow promoting pipe 13 and a second pressing part generating negative pressure to promote the gas flow in the second flow promoting pipe 13; one end of the second elastic element 62 is fixed with the second fixed convex ring 61, the other end is fixed with the second blocking piece 63, a second blocking piece 64 is fixedly arranged on the inner pipe wall of the second flow promoting pipe 13, and correspondingly, the second blocking piece 63 is provided with a second gap matched with the second blocking piece 64; the first blocking piece 65 is positioned at the right side of the first fixing convex ring 68, and the second blocking piece 63 is positioned at the right side of the second fixing convex ring 61.
Wherein, the first vent pipe 11 and the second vent pipe 51 are communicated with the flow promoting device. When the first pressure applying member is driven, the generated negative pressure accelerates the flow of the fraction in the first flow promoting pipe 12. Since the second vent pipe 51 is also connected with the flow promoting device, the fraction in the first flow promoting pipe 12 can be accelerated to be fully contacted with the solvent in the corresponding pipeline, thereby realizing the extraction process. The second pressing piece and the first pressing piece which are correspondingly arranged on the second flow promoting pipe 13 are pressed in a staggered mode, namely when the first pressing piece generates negative pressure to suck gas, the second pressing piece is pushed downwards, so that the gas in the corresponding second flow promoting pipe 13 is discharged, the gas in the pipe is concentrated, and the extraction efficiency is improved.
When the first pressing member moves upward to suck the gas, the first blocking piece 65 is separated from the first blocking piece 67, and the first elastic member 66 is in an extended state, so that the distillate or the gaseous solvent is rapidly introduced into the interior of the first draft tube 12. Meanwhile, the second pressing member moves downwards, the fraction or the gaseous solvent pushes the second blocking piece 63 to move, so that the second elastic piece 62 is in a stretching state, and when the second blocking piece 63 is staggered with the second blocking piece 64, the fraction or the gaseous solvent flows out of the second flow promoting pipe 13 and correspondingly enters the first flow promoting pipe 12, so that the gaseous fraction or the gaseous solvent is prevented from being retained in the pipe, and the extraction efficiency can be greatly improved.
When the first elastic member 66 and the second elastic member 62 are not stretched or compressed, the first notch of the first flap 65 is engaged with the first block 67. The second notch of the second blocking plate 63 is also engaged with the second block 64, and this design can prevent the distillate from flowing into the sample solution containing bottle 5 when the first pressing member or the second pressing member is not driven, or prevent the gaseous solvent from flowing into the solvent containing bottle 1.
As shown in fig. 3, the first pressing member includes a first slide chamber tube 123 communicated with the first flow promoting tube 12, a first piston rod 122 slidably disposed in the first slide chamber tube 123, and a first rotating wheel 121, and the first rotating wheel 121 is rotatably connected to an edge of the first piston rod 122; the second pressing member includes a second slide chamber tube 133 communicated with the second flow promoting tube 13, a second piston rod 132 slidably disposed in the second slide chamber tube 133, and a second rotating wheel 131, and the second rotating wheel 131 is rotatably connected to an edge of the second piston rod 132.
The present embodiment further includes a driving device for driving the first rotating wheel 121 and the second rotating wheel 131 to rotate simultaneously, a rotating shaft 15 and a fixed block 14, the first rotating wheel 121 and the second rotating wheel 131 are synchronously connected and rotate through the rotating shaft 15, an output end of the driving device is fixed to the rotating shaft 15, one end of the fixed block 14 is rotatably connected to the rotating shaft 15, and the other end is fixed to the outer tube walls of the first flow promoting tube 12 and the second flow promoting tube 13. The connection point of the first rotating wheel 121 and the first piston rod 122 is a first connection point, and the connection point of the second rotating wheel 131 and the second piston rod 132 is a second connection point, which have a height difference in the vertical direction.
Through the arrangement, the first pressing member and the second pressing member are always in a staggered state when moving, that is, when the first rotating wheel 121 pulls the first piston rod 122 to move upwards so that the first actuating pipe is in a suction state, the second rotating wheel 131 presses the second piston rod 132 downwards so that the second actuating pipe is in a discharge state, and therefore, all gas in the second actuating pipe is filled into the first actuating pipe, the flow rate of the gas in the pipe is faster, and the generation of extraction reaction is accelerated.
As shown in fig. 9, the number of the flow promoting devices is two, and one end of the second vent pipe 51 facing away from the sample solution containing bottle 5 is communicated with the flow promoting devices; one end of the flow promoting device, where the steam flows out, is an air outlet end which is communicated with the round extraction bottle 2, and fan blades 21 for accelerating the uniform mixing of the distillate and the solvent are arranged in the round extraction bottle 2. When the gaseous solvent and the gaseous fraction meet and impinge on the fan blades 21 in the extraction cylinder 2, the fan blades can rotate, so that the mixture of the fraction and the solvent is more uniform.
As shown in fig. 9 and 10, the condensing unit includes an outer sleeve 31, a middle sleeve 32, an inner sleeve 33, an outlet pipe 35, and an inlet pipe 36; the middle sleeve 32 is communicated with the extraction round bottle 2, a gap for passing condensed water is formed between the outer sleeve 31 and the middle sleeve 32, a spiral cooling water pipe 34 is arranged in the inner sleeve 33, the water inlet pipe 36 is communicated with the cooling water pipe 34, and the water outlet pipe 35 is communicated with the gap.
When the experimenter turns on the water inlet pipe 36, the cold water flows spirally upward along the cooling water pipe 34 and then flows into the gap formed between the outer sleeve 31 and the middle sleeve 32, thereby making the cooling effect better.
As shown in fig. 2, the liquid separating device includes a liquid separating bottle 41, a solvent outflow tube 43 and a distillate outflow tube 44, the liquid separating bottle 41 is connected to the middle cannula 32, the liquid separating bottle 41 is connected to the solvent containing bottle 1 through the solvent outflow tube 43, the liquid separating bottle 41 is connected to the sample liquid containing bottle 5 through the distillate outflow tube 44, and the connection point between the liquid separating bottle 41 and the solvent containing bottle 1 is higher than the connection point between the liquid separating bottle 41 and the sample liquid containing bottle 5.
This embodiment still includes fixing device, and fixing device includes fixing base 71, first flexible dead lever 72 and the flexible dead lever 73 of second, and the quantity of first flexible dead lever 72 is two, and holds bottle 5 and solvent with the sample liquid respectively and hold bottle 1 and can dismantle fixedly, and the flexible dead lever 73 of second can dismantle fixedly with well sleeve 32.
As shown in fig. 2, the driving device includes a driving motor, a driving wheel 81, driven wheels 82, 83, a connecting rod 85 and a first umbrella-shaped transmission gear 87 fixed to the rotating shaft 15, one end of the connecting rod 85 is fixed to the driven wheels 82, 83, the other end is provided with a second umbrella-shaped transmission gear 86 engaged with the first umbrella-shaped transmission gear 87, the driving wheel 81 is engaged with the driven wheels 82, 83, and the output end of the driving motor is fixed to the central portion of the driving wheel 81.
The embodiment further comprises a first fixing rod 860 used for fixing the driving wheel 81 and a second fixing rod 84 used for fixing the driven wheels 82 and 83, wherein one end of the first fixing rod 860 is rotatably connected with the driving wheel 81, the other end of the first fixing rod 860 is fixed with the second telescopic fixing rod 73, one end of the second fixing rod 84 is rotatably connected with the driven wheels 82 and 83, and the other end of the second fixing rod 84 is fixed with the second telescopic fixing rod 73.
As shown in fig. 1, the solvent container bottle 1 is provided with a liquid outlet head (not shown) for pouring the extraction mixture.
As shown in fig. 1, the sample liquid holding bottle 5 is provided with a liquid outlet (not shown) for pouring the sample liquid.
Claims (10)
1. A device for extracting nitrosamine compounds is characterized by comprising a sample liquid containing bottle (5), a solvent containing bottle (1), a condensing device for condensing fractions, a liquid separating device for standing and separating the fractions, a first vent pipe (11) communicated with the solvent containing bottle (1), a second vent pipe (51) communicated with the sample liquid containing bottle (5), and a flow promoting device for accelerating the gas flow in the first vent pipe (11) or the second vent pipe (51);
the flow promoting device comprises a first flow promoting mechanism and a second flow promoting mechanism;
the first flow promoting mechanism comprises a first flow promoting pipe (12) communicated with the first vent pipe (11), a first fixed convex ring (68) arranged on the inner wall of the first flow promoting pipe (12), a first elastic piece (66), a first baffle plate (65) arranged in a sliding way in the inner cavity of the first flow promoting pipe (12), and a first pressure applying piece generating negative pressure to promote the gas flow in the first flow promoting pipe (12);
one end of the first elastic piece (66) is fixed with the first fixed convex ring (68), the other end of the first elastic piece is fixed with the first blocking piece (65), a first blocking piece (67) is fixedly arranged on the inner pipe wall of the first flow promoting pipe (12), and correspondingly, the first blocking piece (65) is provided with a first notch matched with the first blocking piece (67);
the second flow promoting mechanism comprises a second flow promoting pipe (13) communicated with the first vent pipe (11) and the first flow promoting pipe (12), a second fixed convex ring (61) arranged on the inner wall of the second flow promoting pipe (13), a second elastic piece (62), a second baffle plate (63) arranged in a sliding way in the inner cavity of the second flow promoting pipe (13), and a second pressing piece generating negative pressure to promote the gas flow in the second flow promoting pipe (13);
one end of the second elastic piece (62) is fixed with the second fixed convex ring (61), the other end of the second elastic piece is fixed with the second blocking piece (63), a second blocking piece (64) is fixedly arranged on the inner pipe wall of the second flow promoting pipe (13), and correspondingly, the second blocking piece (63) is provided with a second notch matched with the second blocking piece (64);
the first blocking piece (65) is positioned at the right side of the first fixed convex ring (68), and the second blocking piece (63) is positioned at the left side of the second fixed convex ring (61).
2. A device for extracting nitrosamines according to claim 1, characterised in that said first pressure applicator comprises a first slide chamber tube (123) in communication with said first actuator tube (12), a first piston rod (122) slidably arranged in said first slide chamber tube (123), and a first rotation wheel (121), said first rotation wheel (121) being rotatably connected to an edge of said first piston rod (122);
the second pressure applying part comprises a second slide cavity pipe (133) communicated with the second flow promoting pipe (13), a second piston rod (132) and a second rotating wheel (131), wherein the second piston rod (132) is arranged in the second slide cavity pipe (133) in a sliding mode, and the second rotating wheel (131) is connected with the edge of the second piston rod (132) in a rotating mode;
the device is characterized by further comprising a driving device, a rotating shaft (15) and a fixed block (14), wherein the driving device is used for driving the first rotating wheel (121) and the second rotating wheel (131) to rotate simultaneously, the first rotating wheel (121) and the second rotating wheel (131) are synchronously connected and rotate through the rotating shaft (15), the output end of the driving device is fixed with the rotating shaft (15), one end of the fixed block (14) is rotatably connected with the rotating shaft (15), and the other end of the fixed block is fixed with the outer pipe walls of the first flow promoting pipe (12) and the second flow promoting pipe (13);
the connection point of the first rotating wheel (121) and the first piston rod (122) is a first connection point, the connection point of the second rotating wheel (131) and the second piston rod (132) is a second connection point, and the first connection point and the second connection point have a height difference in the vertical direction.
3. A device for extracting nitrosamines according to claim 2, characterised in that said flow-promoting means are two in number, the end of said second venting pipe (51) facing away from the bottle (5) for receiving the sample liquid being in communication with said flow-promoting means;
one end of the flow promoting device, where the steam flows out, is an air outlet end which is communicated with the round extraction bottle (2), and fan blades (21) for accelerating the uniform mixing of fractions and the solvent are arranged in the round extraction bottle (2).
4. A device for extracting nitrosamine compounds according to claim 3, characterised in that said condensation means comprise an outer sleeve (31), an intermediate sleeve (32), an inner sleeve (33), an outlet pipe (35) and an inlet pipe (36);
well sleeve pipe (32) and extraction round vase (2) switch on mutually, form the clearance that supplies the condensate water to pass through between outer sleeve pipe (31) and well sleeve pipe (32), be equipped with in interior sleeve pipe (33) and be spiral helicine cooling water pipe (34), inlet tube (36) and cooling water pipe (34) switch on mutually, outlet pipe (35) with the clearance switch on mutually.
5. A device for extracting nitrosamines compounds as claimed in claim 4, wherein said device comprises a liquid separation bottle (41), a solvent outflow tube (43) and a distillate outflow tube (44), said liquid separation bottle (41) being connected to the middle cannula (32), said liquid separation bottle (41) being connected to the solvent receiving bottle (1) via the solvent outflow tube (43), said liquid separation bottle (41) being connected to the sample liquid receiving bottle (5) via the distillate outflow tube (44), the connection point of said liquid separation bottle (41) to the solvent receiving bottle (1) being at a higher level than the connection point of the liquid separation bottle (41) to the sample liquid receiving bottle (5).
6. A device for extracting nitrosamines compounds, as claimed in claim 5, further comprising a fixing device, said fixing device comprising a fixing base (71), a first telescopic fixing rod (72) and a second telescopic fixing rod (73), said first telescopic fixing rod (72) being two in number and being detachably fixed to sample liquid containing bottle (5) and solvent containing bottle (1), respectively, said second telescopic fixing rod (73) being detachably fixed to middle sleeve (32).
7. A device for extracting nitrosamines according to claim 6, characterised in that said drive means comprise a drive motor, a drive wheel (81), driven wheels (82, 83), a connecting rod (85) and a first umbrella-type transmission gear (87) fixed to the rotation shaft (15), one end of said connecting rod (85) being fixed to a driven wheel (82, 83) and the other end being provided with a second umbrella-type transmission gear (86) meshing with the first umbrella-type transmission gear (87), said drive wheel (81) being meshed with a driven wheel (82, 83), the output of said drive motor being fixed in phase to the central portion of the drive wheel (81).
8. A device for extracting nitrosamines compounds, as claimed in claim 7, further comprising a first fixing rod (860) for fixing the driving wheel (81) and a second fixing rod (84) for fixing the driven wheel (82, 83), said first fixing rod (860) having one end rotatably connected to the driving wheel (81) and the other end fixed to the second telescopic fixing rod (73), said second fixing rod (84) having one end rotatably connected to the driven wheel (82, 83) and the other end fixed to the second telescopic fixing rod (73).
9. A device for extracting nitrosamines according to claim 1, characterised in that said solvent containing bottle (1) is provided with a tapping head for pouring the extraction mixture.
10. A device for extracting nitrosamines according to claim 1, characterised in that said sample fluid receiving bottle (5) is provided with a fluid outlet for pouring the sample fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983225.1A CN109173338B (en) | 2018-08-27 | 2018-08-27 | Device for extracting nitrosamine compounds |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983225.1A CN109173338B (en) | 2018-08-27 | 2018-08-27 | Device for extracting nitrosamine compounds |
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| CN109173338A CN109173338A (en) | 2019-01-11 |
| CN109173338B true CN109173338B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| DE2718129A1 (en) * | 1977-04-23 | 1978-11-02 | Nicoloiu Mircea | Improving countercurrent diffusion by material pulsation - using unequal half periods from a cam operated piston, e.g. for extn. or gas-liq. contact process |
| EP0499040B1 (en) * | 1991-02-14 | 1994-04-06 | SIGRI GREAT LAKES CARBON GmbH | Corrosion- and heat-resistant packing for mass- and heat-exchange processes |
| CN200995139Y (en) * | 2006-12-11 | 2007-12-26 | 中国烟草总公司郑州烟草研究院 | Simultaneous distilling extractor |
| CN102559387A (en) * | 2012-01-19 | 2012-07-11 | 西南大学 | Plant essential oil simultaneous distillation and extraction apparatus |
| CN105031969A (en) * | 2015-06-28 | 2015-11-11 | 复旦大学 | Solid phase extraction method for large-volume environment water sample flow velocity control, and apparatus thereof |
| CN105158048A (en) * | 2015-08-18 | 2015-12-16 | 浙江省海洋水产研究所 | Suction type solid-liquid separator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150126794A1 (en) * | 2013-11-05 | 2015-05-07 | Jason C. JONES | Private user ethanol removal system |
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2018
- 2018-08-27 CN CN201810983225.1A patent/CN109173338B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2718129A1 (en) * | 1977-04-23 | 1978-11-02 | Nicoloiu Mircea | Improving countercurrent diffusion by material pulsation - using unequal half periods from a cam operated piston, e.g. for extn. or gas-liq. contact process |
| EP0499040B1 (en) * | 1991-02-14 | 1994-04-06 | SIGRI GREAT LAKES CARBON GmbH | Corrosion- and heat-resistant packing for mass- and heat-exchange processes |
| CN200995139Y (en) * | 2006-12-11 | 2007-12-26 | 中国烟草总公司郑州烟草研究院 | Simultaneous distilling extractor |
| CN102559387A (en) * | 2012-01-19 | 2012-07-11 | 西南大学 | Plant essential oil simultaneous distillation and extraction apparatus |
| CN105031969A (en) * | 2015-06-28 | 2015-11-11 | 复旦大学 | Solid phase extraction method for large-volume environment water sample flow velocity control, and apparatus thereof |
| CN105158048A (en) * | 2015-08-18 | 2015-12-16 | 浙江省海洋水产研究所 | Suction type solid-liquid separator |
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| CN109173338A (en) | 2019-01-11 |
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