CN113023815A - Organic pollutant extraction device - Google Patents
Organic pollutant extraction device Download PDFInfo
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- CN113023815A CN113023815A CN202110435115.3A CN202110435115A CN113023815A CN 113023815 A CN113023815 A CN 113023815A CN 202110435115 A CN202110435115 A CN 202110435115A CN 113023815 A CN113023815 A CN 113023815A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention discloses an organic pollutant extraction device, relates to the technical field of extraction equipment, and mainly comprises a support, an extraction column, a solid phase extraction piece, a piston rod and a collection container. The invention has simple and reasonable structure, and can improve the efficiency of discharging the sample or the solvent by pushing the sample or the solvent to be discharged through the piston rod, thereby accelerating the extraction process; meanwhile, the extraction device can hermetically butt the extraction material discharge pipe and the jack on the collection container, so that the relative sealing of the extraction process is realized, and the interference of external factors on the extraction process and the influence on the extraction and detection precision are avoided. The organic pollutant extraction device has simple and efficient extraction process, and can meet the requirement of rapid sample analysis; meanwhile, the organic pollutant extraction device realizes the closed extraction process; the extraction column and the solid-phase extraction piece are detachably connected, so that the replacement and maintenance of the hollow piece in the solid-phase extraction piece are facilitated, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of extraction equipment, in particular to an organic pollutant extraction device.
Background
The organic pollutants mainly comprise natural organic matters and artificially synthesized organic matters, wherein the natural organic matters are adhesion carriers of a plurality of toxic and harmful pollutants and precursors of disinfection byproducts, and the natural organic matters enter the water body by means of ground runoff to form part of the organic pollution of the water body. The artificial synthesized organic matters are various in types and mainly enter water bodies through production activities and lives of human beings, so that water quality pollution is caused. Qualitative analysis of organic pollutants in water is an important prerequisite for quantitative analysis and risk evaluation. At present, the organic pollutants are qualitatively analyzed mainly by adopting an organic pollutant pretreatment-gas chromatography-mass spectrometer (GC-MS). The existing organic pollutant extraction device has long extraction time and low extraction efficiency, and cannot meet the requirement of rapid analysis of samples; meanwhile, the existing organic pollutant extraction device still adopts manual feeding, and the closed implementation and high automation of the extraction process cannot be realized.
Disclosure of Invention
The invention aims to provide an organic pollutant extraction device, which aims to solve the problems that the extraction time is long and the rapid analysis of a sample cannot be met in the existing extraction technology.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an organic pollutant extraction device, which mainly comprises:
the support comprises a base and a telescopic rod vertically arranged on the base, and the height of the telescopic rod is adjustable;
the extraction column comprises a column tube and an extraction column base which is detachably mounted at the bottom end of the column tube, and the column tube is detachably mounted on the telescopic rod through a mounting frame; a sample inlet pipe is arranged at the top of the side wall of the column pipe and used for introducing a sample or a solvent into the column pipe; a sample discharge pipe is arranged on the side wall of the extraction column base, and an extract discharge pipe is arranged at the bottom of the extraction column base;
the solid-phase extraction part comprises a columnar shell and a hollow part detachably mounted in the columnar shell, two ends of the columnar shell are both provided with openings, the hollow part can divide the interior of the columnar shell into a plurality of axial channels, and the inner wall of any one of the axial channels is coated with an extraction stationary phase; the cylindrical shell is used for being installed in the extraction column, and the bottom of the cylindrical shell is in threaded connection with the extraction column base;
the piston rod is connected with a driving mechanism, the driving mechanism is installed at the top end of the telescopic rod, a sealing ring is sleeved on the periphery of the bottom of the piston rod, and the piston rod can extend into the column tube under the driving of the driving mechanism and can reciprocate in the column tube so as to push out a sample or a solvent in the column tube;
the collecting container is arranged on the base and used for collecting the extracted substances discharged by the extract discharging pipe, the collecting container is provided with a container cover, the container cover is provided with a butt joint hole, and the butt joint hole is used for being plugged with the extract discharging pipe when the extracted substances are collected.
Preferably, the telescopic rod comprises a bottom rod and a top rod, the bottom end of the bottom rod is fixed on the base, the bottom of the top rod is hollow, and the bottom of the top rod is sleeved outside the top end of the bottom rod; the top of the bottom rod is provided with a first bolt hole along the radial direction, the bottom of the ejector rod is provided with a plurality of second bolt holes along the axial direction, and any one of the second bolt holes is formed along the radial direction of the ejector rod; the top of the bottom rod and the bottom of the top rod are fixed through adjusting bolts.
Preferably, actuating mechanism includes motor, driving gear, driven gear, screw-nut and lead screw, the motor pass through motor support mounting in the telescopic link, the driving gear with the output fixed connection of motor, driven gear pass through the bearing install in on the telescopic link, just driven gear with driving gear meshing, screw-nut's periphery is provided with the teeth of a cogwheel, just screw-nut passes through the teeth of a cogwheel with driven gear meshing, the top of lead screw with screw-nut threaded connection, the bottom of lead screw with the top fixed connection of piston rod.
Preferably, the top end of the screw rod is provided with a limiting block.
Preferably, the extraction column base is a conical base, and the conical base is in threaded connection with the bottom end of the column tube.
Preferably, the collection container is in threaded connection with the container cover; the lateral wall of collection container is provided with the snap ring, the snap ring is used for the joint to be in on the telescopic link.
Preferably, the sample discharge tube is externally connected to a waste collection container through a pipe.
Preferably, the hollow part comprises a plurality of capillary sections, the capillary sections are bonded through the extraction stationary phase to form a capillary bundle, and the inner wall of any one of the capillary sections is coated with the extraction stationary phase.
Preferably, the hollowed-out part is a grid part, a plurality of grid holes are formed in the grid part, and the inner walls of any grid hole are coated with the extraction stationary phase.
Preferably, the device further comprises a controller, electromagnetic valves are arranged on the sample inlet pipe, the sample discharge pipe and the extract discharge pipe, and the driving mechanism and any one of the electromagnetic valves are in communication connection with the controller.
Compared with the prior art, the invention has the following technical effects:
the organic pollutant extraction device provided by the invention has a simple and reasonable structure, and can improve the efficiency of sample or solvent discharge by pushing the sample or solvent to discharge through the piston rod, so that the extraction process is accelerated; and the pressure in the column tube is increased due to the fact that the piston rod is pressed downwards, so that the impact force and the extrusion force of the sample or the solvent on the solid-phase extraction piece are increased, the solid-phase extraction piece is beneficial to comprehensively and effectively extracting the sample, meanwhile, the solvent is beneficial to fully contacting with the extract on the solid-phase extraction piece, and the dissolving and eluting efficiency of the extract is improved. Meanwhile, in the extraction process, the extract discharge pipe of the extraction column is in sealed butt joint with the jack on the collection container, so that the relative sealing of the extraction process is favorably realized, and the interference of external factors on the extraction process and the influence on the extraction and detection precision can be effectively avoided; and because the sample or the solvent is mostly liquid, the extract discharge pipe and the jack on the collection container are in sealed butt joint, and the liquid discharged by the extract discharge pipe can be effectively prevented from splashing everywhere.
In addition, the extraction column and the solid-phase extraction piece are detachably connected, so that the replacement and maintenance of the hollow part in the solid-phase extraction piece are facilitated. The feeding, the discharging and the pushing of the organic pollutant extraction device can be controlled and realized by the controller, the automatic operation of the extraction process can be realized, the labor can be saved, the control on the flow parameters and the like is more accurate, and the manual operation error is avoided.
In conclusion, the organic pollutant extraction device is simple and efficient in extraction process, and can meet the requirement of rapid sample analysis; meanwhile, the organic pollutant extraction device provided by the invention realizes the closed implementation and high automation of the extraction process, and has strong practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an organic contaminant extraction apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of an operating state of an organic contaminant extraction apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an extraction column according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a base of an extraction column according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a capillary bundle according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of a first embodiment of a grating element according to the present disclosure;
FIG. 7 is a schematic view of a second embodiment of a grating element according to the present disclosure;
FIG. 8 is a third schematic view of a grid member according to the present disclosure;
wherein the reference numerals are: 1. an organic pollutant extraction device; 2. a base; 3. a telescopic rod; 31. a bottom bar; 32. a top rod; 33. adjusting the bolt; 4. an extraction column; 41. a column tube; 42. an extraction column base; 43. a sample is put into the tube; 44. a sample discharge pipe; 45. an extract discharge pipe; 5. a solid phase extraction element; 51. a cylindrical housing; 521. a capillary bundle; 5211. a capillary segment; 522. a grating element; 5221. grid holes; 6. a piston rod; 61. a seal ring; 7. a drive mechanism; 71. a motor; 72. a driving gear; 73. a driven gear; 74. a feed screw nut; 75. a screw rod; 76. a motor bracket; 77. a limiting block; 8. a collection container; 81. a container cover; 82. a butt joint hole; 83. a snap ring; 9. and (7) mounting frames.
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.
The invention aims to provide an organic pollutant extraction device, which aims to solve the problems that the extraction time is long and the rapid analysis of a sample cannot be met in the existing extraction technology.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
as shown in fig. 1-8, the present embodiment provides an organic contaminant extraction apparatus 1, which mainly comprises a support, an extraction column 4, a solid phase extraction member 5, a piston rod 6 and a collection container 8. Wherein:
the support comprises a base 2 and an expansion rod 3 vertically arranged on the base 2, and the height of the expansion rod 3 is adjustable;
the extraction column 4 comprises a column tube 41 and an extraction column base 42 which is detachably arranged at the bottom end of the column tube 41, and the column tube 41 is detachably arranged on the telescopic rod 3 through an installation frame 9; a sample inlet pipe 43 is arranged at the top of the side wall of the column tube 41, and the sample inlet pipe 43 is used for introducing a sample (organic pollutants) or a solvent into the column tube 41; a sample discharge pipe 44 is arranged on the side wall of the extraction column base 42, and an extract discharge pipe 45 is arranged at the bottom of the extraction column base 42;
the solid phase extraction part 5 comprises a columnar shell 51 and a hollow part which is detachably arranged in the columnar shell 51, two ends of the columnar shell 51 are both opened, the hollow part can divide the interior of the columnar shell 51 into a plurality of axial channels, so that a sample (organic pollutant) or a solvent can pass through the axial channels and reach the extraction column base 42, and the inner wall of any axial channel is coated with an extraction stationary phase, so that the sample (organic pollutant) can be extracted through extracting and fixing the relative organic pollutant when passing through; the column-shaped shell 51 is used for being arranged in the extraction column 4, and the bottom of the column-shaped shell 51 is in threaded connection with the extraction column base 42;
the piston rod 6 is connected with a driving mechanism 7, the driving mechanism 7 is installed at the top end of the telescopic rod 3, a sealing ring 61 is sleeved on the periphery of the bottom of the piston rod 6, the piston rod 6 can extend into the column tube 41 under the driving of the driving mechanism 7 and can move in the column tube 41 in a reciprocating mode, and therefore samples (organic pollutants) or solvents in the column tube 41 can be pushed out;
collecting container 8 sets up on base 2 for collect the exhaust extraction gained of extract discharge pipe 45, collecting container 8 disposes container lid 81, has seted up butt joint hole 82 on the container lid 81, butt joint hole 82 is used for pegging graft extract discharge pipe 45 when collecting the gained thing of extraction, in order to prevent extraction gained thing and external contact, avoid unnecessary external disturbance, ensure that whole extraction flow goes on in relative confined space, be favorable to improving extraction precision and detection precision. After the sample (organic pollutants) passes through the solid phase extraction member 5 and is discharged through the sample discharge pipe 44, a large amount of extract is attached to the solid phase extraction member 5, after the sample (organic pollutants) is drained, the eluent can be firstly added into the column pipe 41 and discharged through the sample discharge pipe 44 through the piston rod 6, then the electromagnetic valve on the sample discharge pipe 44 is closed, the valve on the extract discharge pipe 45 is opened, finally, the eluent is added into the column pipe 41, the eluent flows out from the top to the bottom of the column pipe 41 under the action of the piston rod 61, meanwhile, the extract attached to the solid phase extraction member 5 can be eluted, the eluted extract is discharged into the collection container 8 through the extract discharge pipe 45 along with the eluent, and the next analysis and test can be carried out.
In this embodiment, as shown in fig. 1-2, the telescopic rod 3 includes a bottom rod 31 and a top rod 32, the bottom end of the bottom rod 31 is fixed to the base 2, the bottom of the top rod 32 is hollow, the bottom of the top rod 32 is sleeved outside the top end of the bottom rod 31, and the top rod 32 and the bottom rod 31 are assembled to form a sleeve structure; first bolt holes have been seted up along its radially in the top of sill bar 31, and a plurality of second bolt holes have been seted up along its axial in the bottom hollow portion of ejector pin 32, and arbitrary second bolt hole is all seted up along ejector pin 32 radially, and each second bolt hole parallel arrangement, aligns and fixes through adjusting bolt 33 through making different second bolt holes and first bolt hole, can realize the regulation to 3 heights of telescopic link.
In this embodiment, as shown in fig. 1-2, the driving mechanism 7 includes a motor 71, a driving gear 72, a driven gear 73, a screw nut 74 and a screw 75, the motor 71 is mounted on the top end of the push rod 32 in the telescopic rod 3 through a motor bracket 76, the driving gear 72 is fixedly connected with the output end of the motor 71, the driven gear 73 is mounted on the telescopic rod 3 through a bearing structure, the driven gear 73 is engaged with the driving gear 72, gear teeth are disposed on the periphery of the screw nut 74, the screw nut 74 is engaged with the driven gear 73 through the gear teeth, the top of the screw 75 is in threaded connection with the screw nut 74, and the bottom end of the screw 75 is fixedly connected with the top of. When the motor 71 is started, the driving gear 72, the driven gear 73 and the lead screw nut 74 are engaged to transmit rotary power to the lead screw 75, and the lead screw 75 converts the rotary power into reciprocating linear motion, so as to drive the piston rod 6 to be inserted into or separated from the column tube 41 and pull the piston rod 6 in the column tube 41. In general, the bottom of the piston rod 6 is always inserted into the column tube 41, and the sample is directly introduced into the column tube 41 from the sample inlet tube 43.
In this embodiment, as shown in fig. 1-2, the top end of the screw 75 is provided with a stopper 77 to prevent the screw nut 74 from slipping off the top end of the screw 75. When the screw nut 74 reaches the limit block 77, the bottom end of the piston rod 6 just contacts with the top end of the solid-phase extraction member 5, and the limit block 77 can effectively prevent the screw 75 from continuously descending, so as to prevent the piston rod 6 from exerting excessive pressure on the solid-phase extraction member 5 to cause damage to the solid-phase extraction member 5.
In this embodiment, as shown in fig. 1-3, the extraction column base 42 is preferably a conical base, which is screwed to the bottom end of the column tube 41, so as to facilitate the disassembly and replacement of the solid phase extraction member 5.
In this embodiment, as shown in fig. 1-2, the collection container 8 is threadably connected to a container lid 81; the lateral wall of collecting container 8 is provided with snap ring 83, and snap ring 83 is used for the joint on telescopic link 3 to realize collecting container 8 and telescopic link 3's fixed, prevent that collecting container 8 from taking place the skew when collecting liquid.
In this embodiment, the sample discharge pipe 44 is externally connected to the waste collection container 8 through a pipe, and is used for collecting the extracted waste liquid or cleaning liquid.
In this embodiment, as shown in fig. 5, the hollow part includes a plurality of capillary sections 5211, the capillary sections 5211 are bonded to form a capillary bundle 521 through an extraction stationary phase, and an inner wall of any one of the capillary sections 5211 is coated with the extraction stationary phase.
In this embodiment, the hollow part may also be a grating member 522, a plurality of grating holes 5221 are formed on the grating member 522, and the inner wall of any one of the grating holes 5221 is coated with an extraction stationary phase. The specific structure of the grating member 522 can be as shown in fig. 6 to 7, the grating member 522 has multiple specifications, and in the grating members 522 with different specifications, the aperture of the axial passage and the arrangement number of the axial passages are different, and the arrangement number can be specifically set according to the actual situation. The grating 522 may be made of the same material as the capillary.
In this embodiment, a controller may be further provided, electromagnetic valves are provided on the sample inlet pipe 43, the sample outlet pipe 44 and the extract outlet pipe 45, and the driving mechanism 7 and any one of the electromagnetic valves are in communication connection with the controller. In the extraction process, except the height of the telescopic rod 3 which is manually adjusted, the rest can be intelligently adjusted and controlled through the controller. For example, the opening and closing of the electromagnetic valves on the sample inlet pipe 43, the sample outlet pipe 44 and the extract outlet pipe 45 may be controlled by the controller according to a preset program (programmed by the prior art), and in order to improve the experimental accuracy, flow meters may be disposed on the sample inlet pipe 43, the sample outlet pipe 44 and the extract outlet pipe 45, and each flow meter is also in communication connection with the controller, and according to the preset program, after the added sample or solvent reaches a preset amount (i.e., the product of the flow rate of the flow meter and the opening time of the corresponding electromagnetic valve), the corresponding electromagnetic valve may be automatically closed. The controller is an existing controller, such as a microcontroller, which may be in the form of a remote controller or may be mounted on the telescopic rod 3 via a snap ring.
The following description is made of the specific use principle of the present embodiment:
the column tube 41, the extraction column base 42 and the solid phase extraction member 5 are assembled to form the extraction column 4, and are mounted on the top rod 32 of the telescopic rod 3 through a mounting frame. Then the sample inlet pipe 43 is connected with the sample to be measured, the sample discharge pipe 44 is externally connected with a waste collection container, and the ejector rod 32 is adjusted to descend, so that the extract discharge pipe 45 is inserted into the butt joint hole 82 on the collection container 8 at the bottom, and the extraction column 4 and the collection container 8 are in sealed butt joint. The solenoid valves on the sample inlet line 43, the extract outlet line 45 and the sample outlet line 44 may then be held closed by the controller while only the solenoid valves on the sample inlet line 43 are closed. Then, firstly, the sample (organic pollutant) is introduced through the sample inlet pipe 43, after a preset amount (the preset amount is determined according to actual conditions) is reached, the electromagnetic valve on the sample inlet pipe 43 is closed, the driving mechanism 7 is started and the electromagnetic valve on the sample outlet pipe 44 is opened, the electromagnetic valve on the extract outlet pipe 45 is kept closed, the piston rod 6 pushes the sample (organic pollutant) downwards under the driving action of the driving mechanism 7, so that the sample (organic pollutant) is discharged from the sample outlet pipe 44, the extraction is completed in the process that the sample (organic pollutant) flows through the solid phase extraction element 5, and the time that the sample (organic pollutant) is positioned in the column pipe 41 can be prolonged according to actual requirements, so that the extraction effect is enhanced, and the extraction is thorough. Then, the eluent is introduced into the column tube 41 through the sample inlet tube 43 and is pushed out through the sample outlet tube 44 through the piston rod 6, then the controller closes the electromagnetic valve on the sample outlet tube 44, simultaneously opens the electromagnetic valve on the extract outlet tube 45, finally, the eluent is added into the column tube 41, flows out from the top to the bottom of the column tube 41 under the action of the piston rod 61, simultaneously, the extract attached to the solid phase extraction member 5 can be eluted, and the eluted extract is discharged into the collection container 8 along with the eluent through the extract outlet tube 45, so that the next analytical test can be carried out. The analysis and detection are performed by using the existing equipment and the existing scheme, and are not described herein again. After extraction, the push rod 32 is manually adjusted to be lifted, the extract discharge pipe 45 is separated from the butt joint hole 82 on the collection container 8, and the collection container 8 is taken away for next analysis and test. The extraction column 4 can then be removed for cleaning of the extraction column 4 and replacement of the corresponding components, such as the solid phase extraction member 5.
The embodiment adopts the capillary tube bundle or the grid member type solid phase extraction member 5, aims to enlarge the contact area of the sample or the solvent and the solid phase extraction member 5 while not influencing the flow of the sample or the solvent, is favorable for improving the extraction effect and ensures thorough extraction.
The organic pollutant extraction device of this embodiment can place and carry out extraction work on the superclean bench.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An organic contaminant extraction device, comprising:
the support comprises a base and a telescopic rod vertically arranged on the base, and the height of the telescopic rod is adjustable;
the extraction column comprises a column tube and an extraction column base which is detachably mounted at the bottom end of the column tube, and the column tube is detachably mounted on the telescopic rod through a mounting frame; a sample inlet pipe is arranged at the top of the side wall of the column pipe and used for introducing a sample or a solvent into the column pipe; a sample discharge pipe is arranged on the side wall of the extraction column base, and an extract discharge pipe is arranged at the bottom of the extraction column base;
the solid-phase extraction part comprises a columnar shell and a hollow part detachably mounted in the columnar shell, two ends of the columnar shell are both provided with openings, the hollow part can divide the interior of the columnar shell into a plurality of axial channels, and the inner wall of any one of the axial channels is coated with an extraction stationary phase; the cylindrical shell is used for being installed in the extraction column, and the bottom of the cylindrical shell is in threaded connection with the extraction column base;
the piston rod is connected with a driving mechanism, the driving mechanism is installed at the top end of the telescopic rod, a sealing ring is sleeved on the periphery of the bottom of the piston rod, and the piston rod can extend into the column tube under the driving of the driving mechanism and can reciprocate in the column tube so as to push out a sample or a solvent in the column tube;
the collecting container is arranged on the base and used for collecting the extracted substances discharged by the extract discharging pipe, the collecting container is provided with a container cover, the container cover is provided with a butt joint hole, and the butt joint hole is used for being plugged with the extract discharging pipe when the extracted substances are collected.
2. The organic pollutant extraction device of claim 1, wherein the telescoping rod comprises a bottom rod and a top rod, the bottom end of the bottom rod is fixed to the base, the bottom of the top rod is hollow, and the bottom of the top rod is sleeved outside the top end of the bottom rod; the top of the bottom rod is provided with a first bolt hole along the radial direction, the bottom of the ejector rod is provided with a plurality of second bolt holes along the axial direction, and any one of the second bolt holes is formed along the radial direction of the ejector rod; the top of the bottom rod and the bottom of the top rod are fixed through adjusting bolts.
3. The organic pollutant extraction device of claim 1, wherein the driving mechanism comprises a motor, a driving gear, a driven gear, a screw nut and a screw rod, the motor is mounted on the telescopic rod through a motor bracket, the driving gear is fixedly connected with the output end of the motor, the driven gear is mounted on the telescopic rod through a bearing, the driven gear is meshed with the driving gear, gear teeth are arranged on the periphery of the screw nut, the screw nut is meshed with the driven gear through the gear teeth, the top of the screw rod is in threaded connection with the screw nut, and the bottom end of the screw rod is fixedly connected with the top of the piston rod.
4. The organic pollutant extraction device of claim 3, wherein a stop block is arranged at the top end of the screw rod.
5. The organic contaminant extraction device according to claim 1, wherein the extraction column base is a conical base that is threaded to the bottom end of the column tube.
6. The organic contaminant extraction device of claim 1, wherein the collection container is threadably connected to the container lid; the lateral wall of collection container is provided with the snap ring, the snap ring is used for the joint to be in on the telescopic link.
7. The organic contaminant extraction device of claim 1, wherein the sample drain tube is externally piped to a waste collection vessel.
8. The organic pollutant extraction device of claim 1, wherein the hollow-out member comprises a plurality of capillary segments, the plurality of capillary segments are bonded by the extraction stationary phase to form a capillary bundle, and the inner wall of any one of the capillary segments is coated with the extraction stationary phase.
9. The organic pollutant extraction device of claim 1, wherein the hollowed-out member is a grid member, wherein a plurality of grid holes are formed in the grid member, and the inner wall of any one of the grid holes is coated with the extraction stationary phase.
10. The organic contaminant extraction device according to claim 1, further comprising a controller, wherein the sample inlet pipe, the sample discharge pipe and the extract discharge pipe are provided with electromagnetic valves, and the driving mechanism and any one of the electromagnetic valves are in communication connection with the controller.
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| CN202110435115.3A CN113023815A (en) | 2021-04-22 | 2021-04-22 | Organic pollutant extraction device |
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| CN202110435115.3A CN113023815A (en) | 2021-04-22 | 2021-04-22 | Organic pollutant extraction device |
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| CN203220779U (en) * | 2013-04-13 | 2013-10-02 | 云南省烟草农业科学研究院 | Simple solid-phase extraction complete device facilitating closed connection fit |
| CN205549681U (en) * | 2016-02-25 | 2016-09-07 | 中国水产科学研究院黄海水产研究所 | Novel solid phase extraction device |
| CN110702489A (en) * | 2019-09-29 | 2020-01-17 | 广东省测试分析研究所（中国广州分析测试中心） | Uniform-speed solid-phase extraction method and device suitable for enriching naturally dissolved organic matters |
| CN111751195A (en) * | 2020-06-29 | 2020-10-09 | 中国水产科学研究院 | Multi-channel automatic purification device |
| CN212731139U (en) * | 2020-07-17 | 2021-03-19 | 尚光志 | A solid-phase extraction device for food detects |
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