CN115888162A

CN115888162A - Environmental monitoring laboratory water sample pretreatment device

Info

Publication number: CN115888162A
Application number: CN202211573389.XA
Authority: CN
Inventors: 孟攀攀; 盛德利
Original assignee: Jiangsu Jingcheng Testing Co ltd
Current assignee: Jiangsu Jingcheng Testing Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-04

Abstract

The invention discloses a water sample pretreatment device for an environment monitoring laboratory, and relates to the technical field of water sample treatment. This environmental monitoring laboratory water sample pretreatment device, including heating base and installing the crude sample erlenmeyer flask on heating base top surface, the top surface activity rabbling mechanism of crude sample erlenmeyer flask, the outside surface connection of rabbling mechanism has condensation mechanism, condensation mechanism below is provided with sample storage device in advance. In the invention, filtered steam enters the condenser pipe through the second connecting pipe, is introduced into the pre-sample conical flask after condensation treatment, a water sample after solid-liquid separation can be obtained from the pre-sample conical flask, the separated solid sample is left in the crude sample conical flask, the filter paper is taken down, then the sealing plug is pulled down, the filter paper is plugged into the crude sample conical flask for continuous heating, the filter paper is dried and then shakes off sample particles adhered to the filter paper, the filter paper is taken out, solid sample detection can be carried out, the operation is convenient, and the solid-liquid separation can be accurately carried out.

Description

Environmental monitoring laboratory water sample pretreatment device

Technical Field

The invention relates to the technical field of water sample treatment, in particular to a water sample pretreatment device in an environment monitoring laboratory.

Background

Environmental monitoring refers to the activities of environmental monitoring agencies to monitor and measure environmental quality conditions. The environmental monitoring is to monitor and measure the index reflecting the environmental quality to determine the environmental pollution condition and the environmental quality. Environmental monitoring includes both the detection of chemical contaminants and the monitoring of contaminants due to physical (energy) factors such as noise, vibration, thermal energy, electromagnetic radiation, and radioactivity; the method also comprises biological monitoring of various reflections and information tests sent by organisms due to the change of environmental quality, ecological monitoring for observing regional communities and population migration changes, and the like.

The water sample needs to be detected in the environment monitoring process, but most of natural water and various sewage and wastewater often contain different amounts of solid matters, so that the water quality is turbid, when indexes of inorganic substances such as metals are measured, pretreatment needs to be carried out before organic substances with higher concentration are contained in the water sample, and the purpose of water sample pretreatment is mainly to enable a component to be measured to reach the form and concentration required by a measuring method and an instrument, so that the interference of coexisting components is eliminated. The solid-liquid separation mode commonly used at present uses 0.45 mu m filter membrane to filter the water sample, separates out the particulate matter in the water sample, then either directly sends analytical testing to, but because contains moisture in the particulate matter, can influence the testing result, perhaps dries the particulate matter, but some particulate matter can be taken away to stoving in-process steam to influence the testing result.

According to the published Chinese patent with the patent number CN 115184119A: a water sample pretreatment device and a treatment method thereof in an environmental monitoring laboratory comprise a distillation flask; the heating mechanism is used for heating and evaporating a water sample in the distillation flask and is arranged at the bottom of the distillation flask; the steam conveying mechanism is used for conveying water vapor in the distillation flask outwards and is arranged at the top of the distillation flask; the filtering mechanism is used for intercepting particulate matters in the steam, and one end of the filtering mechanism is connected with the steam conveying mechanism; and the air guide pipe is connected with the other end of the filtering mechanism. The invention can effectively prevent the particles from drifting away along with the steam, keep the particles dry and improve the accuracy of later detection and analysis. However, the device provided in the patent has poor overall stability, and only can acquire a solid sample, other components in a water sample cannot be detected, the detection efficiency is low, and multiple times of sampling is required.

Disclosure of Invention

Solves the technical problem

Aiming at the defects of the prior art, the invention provides a water sample pretreatment device in an environmental monitoring laboratory, which solves the problems that the device provided by the prior art is poor in overall stability, only can obtain a solid sample, other components in a water sample cannot be detected, the detection efficiency is low, and multiple sampling is needed.

Technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an environmental monitoring laboratory water sample pretreatment device, includes the heating base and installs the rough appearance erlenmeyer flask on heating base top surface, the top surface activity rabbling mechanism of rough appearance erlenmeyer flask, the rabbling mechanism is used for stirring the inside of rough appearance erlenmeyer flask, the outside surface connection of rabbling mechanism has condensation mechanism, condensation mechanism is used for condensing the gas after the evaporation, condensation mechanism below is provided with the preliminary sample storage device, the preliminary sample storage device is used for storing the sample after handling.

Preferably, the heating base comprises a base body and a heating assembly, fixed suckers are uniformly distributed on the bottom end surface of the base body, and the heating assembly is installed inside the base body.

Preferably, heating element includes hot plate and heat conduction post, the erlenmeyer flask caulking groove has been seted up to base body's top surface, rude sample erlenmeyer flask movable mounting is in the inner wall department of erlenmeyer flask caulking groove, the inside at base body is installed to the hot plate, a plurality of heat conduction post evenly distributed is at the top surface of hot plate, a plurality of the heat conduction post all extends to the inner wall bottom of erlenmeyer flask caulking groove.

Preferably, the stirring mechanism comprises a sealing assembly and a driving assembly, the sealing assembly is movably arranged on the inner wall of the rough-sample conical flask, and the driving assembly is arranged on the outer side of the sealing assembly.

Preferably, the sealing assembly comprises a sealing plug and a movable plug, the sealing plug is movably mounted on the inner wall of the rough-sample conical flask, the movable plug is movably mounted on the bottom end surface of the sealing plug, and a plurality of stirring assemblies are mounted on the bottom end surface of the movable plug.

Preferably, the stirring assembly comprises a movable rotating shaft and a glow rod, the movable rotating shaft is movably arranged on the bottom end surface of the movable plug, a connecting fulcrum shaft is arranged on the outer side surface of the movable rotating shaft, a connecting spring is jointly arranged between the connecting fulcrum shaft and the bottom end surface of the movable plug, and the glow rod is arranged on the tail end surface of the connecting fulcrum shaft.

Preferably, the driving assembly comprises a driving motor and a rotating fulcrum shaft, a through groove is formed in the sealing plug, the rotating fulcrum shaft is movably mounted on the inner wall of the through groove, the bottom end surface of the rotating fulcrum shaft is connected to the top end surface of the movable plug, the driving motor is mounted on the top end surface of the rotating fulcrum shaft, a fixing plate is mounted on the top end surface of the driving motor, supporting shafts are uniformly distributed on the bottom end surface of the fixing plate, a fixing clamping ring is mounted on the bottom end surface of the supporting shafts, and the fixing clamping ring is movably sleeved on the outer side surface of the rough sample conical bottle.

Preferably, the condensing mechanism includes a filter assembly installed at an outer side of the sealing plug, and a condensing duct installed at an outer side surface of the filter assembly.

Preferably, the filter assembly includes first filter tube and second filter tube, steam passage has all been seted up to the inside of sealing plug and activity stopper, steam passage's inner wall connection has first connecting pipe, first filter tube one end surface mounting is on the terminal surface of first connecting pipe, the joint groove has been seted up on the one end surface of second filter tube, the other end surface mounting of first filter tube is in the inner wall department in joint groove, install filter paper between the inner wall in first filter tube and joint groove, the other end surface mounting of second filter tube has the second connecting pipe, the terminal surface connection of second connecting pipe is to the condenser pipe.

Preferably, preliminary sample storage device includes unable adjustment base and support frame, a plurality of fixed suction cup is installed equally to unable adjustment base's bottom surface, unable adjustment base's top surface mounting has the preliminary sample erlenmeyer flask, the top surface at unable adjustment base is installed to the support frame, the exit end of condenser pipe extends to the top of preliminary sample erlenmeyer flask.

Advantageous effects

The invention has the following beneficial effects:

(1) This environmental monitoring laboratory water sample pretreatment device, with the leading-in thick appearance erlenmeyer flask of pending water sample, then hold the electric rod, insert the electric rod in the thick appearance erlenmeyer flask to fill in the bottleneck department of thick appearance erlenmeyer flask with the sealing plug, the electric rod gets into and opens automatically under coupling spring's reset action in the thick appearance erlenmeyer flask after, then fixes the bottleneck department at the thick appearance erlenmeyer flask with sealing plug and rabbling mechanism through fixed snap ring.

(2) This environmental monitoring laboratory water sample pretreatment device, with hot plate and glow stick access circuit, heat the water sample in the thick appearance erlenmeyer flask, driving motor drives the activity stopper simultaneously and rotates, thereby drive the glow stick and stir the water sample, heat conduction efficiency has been strengthened, make the water sample be heated evenly, the vapor that the water sample after the heating produced is leading-in to first filter tube and second filter tube from first connecting pipe department, filter through the particle impurity in the filter paper with steam.

(3) This environmental monitoring laboratory water sample pretreatment device, steam after the filtration passes through the second connecting pipe and gets into the condenser pipe, leading-in preliminary sample erlenmeyer flask behind condensation treatment, can acquire the water sample after solid-liquid separation in the preliminary sample erlenmeyer flask, the isolated solid-state sample remains in the crude sample erlenmeyer flask, separate first filter tube and second filter tube simultaneously, take off filter paper, then will pull out the sealing plug, fill in filter paper in the crude sample erlenmeyer flask in and continue to heat, filter paper shakes off the sample granule that filter paper pasted on after being dried, take out filter paper, can carry out solid sample detection, and convenient for operation, and can accurately carry out solid-liquid separation.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

FIG. 1 is a schematic view of the overall external structure of the present invention;

FIG. 2 is a schematic view of the overall external structure of another aspect of the present invention;

FIG. 3 is a schematic view of the overall internal structure of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;

fig. 5 is a schematic view of the overall internal structure of another aspect of the present invention.

In the figure, 1, a base body; 2. a rough sample erlenmeyer flask; 3. fixing the sucker; 4. a conical flask caulking groove; 5. heating the plate; 6. a heat-conducting column; 7. a sealing plug; 8. a movable plug; 9. a movable rotating shaft; 10. connecting a fulcrum; 11. a connecting spring; 12. an electric heating rod; 13. a through groove; 14. rotating the fulcrum shaft; 15. a drive motor; 16. a fixing plate; 17. a support shaft; 18. fixing the snap ring; 19. a condenser tube; 20. a steam channel; 21. a first connecting pipe; 22. a first filtering pipe; 23. a second filtering pipe; 24. a clamping groove; 25. filtering paper; 26. a second connecting pipe; 27. a fixed base; 28. a support frame; 29. the erlenmeyer flask was pre-sampled.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-5, an embodiment of the invention provides a technical solution: the utility model provides an environmental monitoring laboratory water sample pretreatment device, including heating base with install at the thick appearance erlenmeyer flask 2 of heating base top surface, the top surface activity rabbling mechanism of thick appearance erlenmeyer flask 2, the rabbling mechanism is used for stirring the inside of thick appearance erlenmeyer flask 2, the outside surface connection of rabbling mechanism has condensation mechanism, condensation mechanism is used for condensing the gas after the evaporation, condensation mechanism below is provided with the storage device of preliminary sampling, the storage device of preliminary sampling is used for storing the sample after handling.

Specifically, the heating base includes base body 1 and heating element, base body 1's bottom surface evenly distributed has fixed suction cup 3, heating element installs the inside at base body 1, heating element includes hot plate 5 and heat conduction post 6, the erlenmeyer flask caulking groove 4 has been seted up on base body 1's top surface, 2 movable mounting in the inner wall department of erlenmeyer flask caulking groove 4 of crude sample erlenmeyer flask, the inside at base body 1 is installed to hot plate 5, 6 evenly distributed of a plurality of heat conduction post are on the top surface of hot plate 5, a plurality of heat conduction post 6 all extends to the inner wall bottom of erlenmeyer flask caulking groove 4, insert the circuit with hot plate 5, heat the water sample in the crude sample erlenmeyer flask 2.

Further, rabbling mechanism includes seal assembly and drive assembly, seal assembly movable mounting is in the inner wall department of thick appearance erlenmeyer flask 2, and drive assembly installs in seal assembly's the outside, and seal assembly includes sealing plug 7 and activity stopper 8, and sealing plug 7 movable mounting is in the inner wall department of thick appearance erlenmeyer flask 2, and activity stopper 8 movable mounting is on the bottom surface of sealing plug 7, and the bottom surface mounting of activity stopper 8 has a plurality of stirring subassembly.

Further, the stirring component comprises a movable rotating shaft 9 and a electrothermal rod 12, the movable rotating shaft 9 is movably installed on the bottom end surface of the movable plug 8, a connecting fulcrum shaft 10 is installed on the outer side surface of the movable rotating shaft 9, a connecting spring 11 is installed between the connecting fulcrum shaft 10 and the bottom end surface of the movable plug 8, the electrothermal rod 12 is installed on the tail end surface of the connecting fulcrum shaft 10, a water sample to be treated is led into the rough-sample conical flask 2, then the electrothermal rod 12 is held, the electrothermal rod 12 is inserted into the rough-sample conical flask 2, so that the sealing plug 7 is plugged into the bottleneck of the rough-sample conical flask 2, and the electrothermal rod 12 automatically opens under the reset action of the connecting spring 11 after entering the rough-sample conical flask 2.

Further, the drive assembly includes driving motor 15 and rotation fulcrum 14, the inside of sealing plug 7 has been seted up and has been run through groove 13, rotation fulcrum 14 movable mounting is in the inner wall department that runs through groove 13, the bottom surface that rotates fulcrum 14 is connected to the top surface of movable stopper 8, driving motor 15 installs on the top surface that rotates fulcrum 14, driving motor 15's top surface mounting has fixed plate 16, the bottom surface evenly distributed of fixed plate 16 has back shaft 17, the bottom surface mounting of back shaft 17 has fixed snap ring 18, fixed snap ring 18 movable sleeve is on the outside surface of thick appearance erlenmeyer flask 2, then fix sealing plug 7 and rabbling mechanism in the bottleneck department of thick appearance erlenmeyer flask 2 through fixed snap ring 18, driving motor 15 drives movable stopper 8 and rotates, thereby drive glow stick 12 stirs the water sample, heat conduction efficiency has been strengthened, make the water sample be heated evenly.

Further, the condensing mechanism comprises a filtering component and a condensing pipe 19, the filtering component is installed on the outer side of the sealing plug 7, the condensing pipe 19 is installed on the outer side surface of the filtering component, the filtering component comprises a first filtering pipe 22 and a second filtering pipe 23, the inside of the sealing plug 7 and the movable plug 8 is provided with a steam channel 20, the inner wall of the steam channel 20 is connected with a first connecting pipe 21, one end surface of the first filtering pipe 22 is installed on the tail end surface of the first connecting pipe 21, one end surface of the second filtering pipe 23 is provided with a clamping groove 24, the other end surface of the first filtering pipe 22 is installed on the inner wall of the clamping groove 24, filter paper 25 is installed between the first filtering pipe 22 and the inner wall of the clamping groove 24, the other end surface of the second filtering pipe 23 is provided with a second connecting pipe 25, the tail end surface of the second connecting pipe 25 is connected to the condensing pipe 19, the filter paper 25 is fixed between the first filtering pipe 22 and the second filtering pipe 23 by inserting the first filtering pipe 22 into the clamping groove 24, the operation is convenient, then the first connecting pipe 21 is inserted into the steam channel 20, the second connecting pipe 25 is connected to the condensing pipe 19, water sample generated by heating water in the first filtering pipe 21 and impurities in the first filtering pipe 23 are filtered by the first connecting pipe 23.

Further, the pre-sample storage device comprises a fixed base 27 and a fixed base 28, a plurality of fixed suckers 3 are also installed on the bottom end surface of the fixed base 27, a pre-sample conical bottle 29 is installed on the top end surface of the fixed base 27, the fixed base 28 is installed on the top end surface of the fixed base 27, the outlet end of the condenser pipe 19 extends to the upper side of the pre-sample conical bottle 29, filtered steam enters the condenser pipe 19 through the second connecting pipe 25 and is introduced into the pre-sample conical bottle 29 after condensation treatment, a water sample after solid-liquid separation can be obtained from the pre-sample conical bottle 29, the separated solid sample is left in the rough-sample conical bottle 2, meanwhile, the first filter pipe 22 and the second filter pipe 23 are separated, the filter paper 25 is taken down, then the sealing plug 7 is pulled down, the filter paper 25 is plugged into the rough-sample conical bottle 2 for continuous heating, sample particles adhered to the filter paper 25 are shaken off after the filter paper 25 is dried, the filter paper 25 is taken out, solid-sample detection can be carried out, operation is convenient, and solid-liquid separation can be accurately carried out.

When the device is used (during work), before pretreatment, the bottom end body 1 and the fixed base 27 are moved to an experimental site, then the device is integrally fixed on a test bed through the fixed sucker 3, the first filter pipe 22 is inserted into the clamping groove 24, so that the filter paper 25 is fixed between the first filter pipe 22 and the second filter pipe 23, the operation is convenient, then the first connecting pipe 21 is inserted into the steam channel 20, the second connecting pipe 25 is connected to the condensing pipe 19, and the condensing pipe 19 is connected to a water supply system;

introducing a water sample to be treated into the crude sample conical flask 2, holding the electric heating rod 12, inserting the electric heating rod 12 into the crude sample conical flask 2, so that the sealing plug 7 is plugged into the bottleneck of the crude sample conical flask 2, the electric heating rod 12 automatically opens under the reset action of the connecting spring 11 after entering the crude sample conical flask 2, and then fixing the sealing plug 7 and the stirring mechanism at the bottleneck of the crude sample conical flask 2 through the fixing clamp ring 18;

the heating plate 5 and the electric heating rod 12 are connected into a circuit to heat a water sample in the rough sample conical flask 2, and the driving motor 15 drives the movable plug 8 to rotate at the same time, so that the electric heating rod 12 is driven to stir the water sample, the heat conduction efficiency is enhanced, the water sample is heated uniformly, water vapor generated by the heated water sample is guided into the first filtering pipe 22 and the second filtering pipe 23 from the first connecting pipe 21, and particle impurities in the water vapor are filtered through the filter paper 25;

filtered steam enters the condenser pipe 19 through the second connecting pipe 25, the steam is introduced into the pre-sample conical flask 29 after condensation treatment, a water sample after solid-liquid separation can be obtained from the pre-sample conical flask 29, the separated solid sample is left in the coarse sample conical flask 2, the first filter pipe 22 and the second filter pipe 23 are separated at the same time, the filter paper 25 is taken down, then the sealing plug 7 is pulled down, the filter paper 25 is plugged into the coarse sample conical flask 2 for continuous heating, the filter paper 25 is dried and then shaken off sample particles stuck on the filter paper 25, the filter paper 25 is taken out, solid sample detection can be carried out, the operation is convenient, and the solid-liquid separation can be accurately carried out.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an environmental monitoring laboratory water sample pretreatment device, includes heating base and installs thick appearance erlenmeyer flask (2) at heating base top surface, its characterized in that: the top surface activity rabbling mechanism of thick appearance erlenmeyer flask (2), the rabbling mechanism is used for stirring the inside of thick appearance erlenmeyer flask (2), the outside surface of rabbling mechanism is connected with condensation mechanism, condensation mechanism is used for condensing the gas after the evaporation, condensation mechanism below is provided with the storage device that gives a look in advance, the storage device that gives a look in advance is used for storing the sample after handling.

2. The environmental monitoring laboratory water sample pretreatment device of claim 1, characterized in that: the heating base comprises a base body (1) and a heating assembly, wherein fixed suckers (3) are uniformly distributed on the bottom end surface of the base body (1), and the heating assembly is installed inside the base body (1).

3. The environmental monitoring laboratory water sample pretreatment device of claim 2, characterized in that: heating element includes hot plate (5) and heat conduction post (6), erlenmeyer flask caulking groove (4) have been seted up to the top surface of base body (1), thick appearance erlenmeyer flask (2) movable mounting is in the inner wall department of erlenmeyer flask caulking groove (4), the inside at base body (1), a plurality of is installed in hot plate (5) heat conduction post (6) evenly distributed is at the top surface of hot plate (5), a plurality of heat conduction post (6) all extends to the inner wall bottom of erlenmeyer flask caulking groove (4).

4. The environmental monitoring laboratory water sample pretreatment device of claim 1, characterized in that: the stirring mechanism comprises a sealing assembly and a driving assembly, the sealing assembly is movably arranged on the inner wall of the rough sample conical flask (2), and the driving assembly is arranged on the outer side of the sealing assembly.

5. The environmental monitoring laboratory water sample pretreatment device of claim 4, characterized in that: the sealing assembly comprises a sealing plug (7) and a movable plug (8), wherein the sealing plug (7) is movably arranged on the inner wall of the rough sample conical bottle (2), the movable plug (8) is movably arranged on the bottom end surface of the sealing plug (7), and a plurality of stirring assemblies are arranged on the bottom end surface of the movable plug (8).

6. The environmental monitoring laboratory water sample pretreatment device of claim 5, characterized in that: the stirring subassembly is including activity pivot (9) and glow stick (12), activity pivot (9) movable mounting is at the bottom surface of activity stopper (8), the outside surface mounting of activity pivot (9) has connection fulcrum (10), install connecting spring (11) jointly between the bottom surface of connecting fulcrum (10) and activity stopper (8), the terminal surface at connection fulcrum (10) is installed in glow stick (12).

7. The environmental monitoring laboratory water sample pretreatment device of claim 5, characterized in that: the utility model discloses a bottle opener, including sealing plug (7), driving assembly, sealing plug (7) and driving assembly, driving assembly includes driving motor (15) and rotation fulcrum (14), the inside of sealing plug (7) has been seted up and has been run through groove (13), rotate fulcrum (14) movable mounting and locate at the inner wall that runs through groove (13), the bottom surface that rotates fulcrum (14) is connected to the top surface of activity stopper (8), driving motor (15) are installed on the top surface that rotates fulcrum (14), the top surface mounting of driving motor (15) has fixed plate (16), the bottom surface evenly distributed of fixed plate (16) has back shaft (17), the bottom surface mounting of back shaft (17) has fixed snap ring (18), fixed snap ring (18) activity suit is on the outside surface of rough appearance erlenmeyer flask (2).

8. The environmental monitoring laboratory water sample pretreatment device of claim 1, characterized in that: the condensation mechanism comprises a filtering component and a condensation pipe (19), the filtering component is arranged on the outer side of the sealing plug (7), and the condensation pipe (19) is arranged on the outer side surface of the filtering component.

9. The environmental monitoring laboratory water sample pretreatment device of claim 4 or 8, characterized in that: the utility model discloses a steam condenser, including filter assembly, sealing plug (7) and movable stopper (8), steam passage (20) have all been seted up to filter assembly, the inner wall of steam passage (20) is connected with first connecting pipe (21), first filter pipe (22) one end surface mounting is on the terminal surface of first connecting pipe (21), joint groove (24) have been seted up on the one end surface of second filter pipe (23), the other end surface mounting of first filter pipe (22) is in the inner wall department of joint groove (24), install filter paper (25) between the inner wall of first filter pipe (22) and joint groove (24), the other end surface mounting of second filter pipe (23) has second connecting pipe (25), the terminal surface connection of second connecting pipe (25) is to condenser pipe (19).

10. The environmental monitoring laboratory water sample pretreatment device of claim 8, characterized in that: sample storage device includes unable adjustment base (27) and unable adjustment base (28), a plurality of fixed suction cup (3) are installed equally to the bottom surface of unable adjustment base (27), the top surface mounting of unable adjustment base (27) has sample erlenmeyer flask (29) in advance, the top surface at unable adjustment base (27) is installed in unable adjustment base (28), the exit end of condenser pipe (19) extends to the top of sample erlenmeyer flask (29) in advance.