On-site enrichment device for trace organic pollutants in water

Abstract

The utility model discloses an on-site enrichment device for trace organic pollutants in water, which relates to the technical field of ecological environment water quality monitoring, and adopts the technical scheme that the on-site enrichment device comprises a water collection component and a water collection component, a containing cavity in the water collector is communicated with an external water conveying assembly, and the water collector can receive an original water sample needing to be sampled; the conveying assembly comprises a pump machine and can be used for extracting a water sample from the original water sample collected in the water collector; the adsorption pipe is connected with a pump machine of the conveying assembly and can be used for collecting pollutants of the water sample conveyed by the conveying assembly. The on-site water sample enrichment device has the beneficial effects that the on-site enrichment of a water sample is realized through the enrichment device, so that the pressure of sampling personnel for carrying samples can be greatly reduced, and the time of a pretreatment link after the sampling personnel return to a laboratory is also reduced. More importantly, the sample enriched on site has better stability, more accurate monitoring data can be provided, and a more reliable theoretical basis is provided for environment management.

Description

TECHNICAL FIELD

[0001] The utility model relates to ecological environment water quality monitoring technical field, concretely is a trace organic pollutant in water on -the -spot enrichment device. BACKGROUND

[0002] With the acceleration of industrialization, water pollution problem is increasingly serious, especially the emergence of new pollutants, put forward higher requirements to water quality monitoring. These new pollutants usually have low concentration, high toxicity, difficult degradation and other characteristics, pose potential threat to aquatic ecosystems and human health. In order to accurately evaluate water pollution, new pollutants in water sample need to be enriched to improve the sensitivity of analysis and detection.

[0003] However, the existing water new pollutant enrichment technology mostly adopts the method that water sample is collected and then taken back to the laboratory for enrichment operation. This method has obvious technical problems: in the sampling and transportation process, ferrous ions in water sample are prone to redox reaction with oxygen in the air, and are rapidly oxidized to generate ferric ions. Ferric ions are easy to form flocculation in water, and these flocculation has strong adsorption capacity, can adsorb suspended solids, organic matter and part of new pollutants in water sample, resulting in degradation of new pollutants in water sample in the transportation process.

[0004] Due to the oxidation-reduction reaction and the adsorption of flocculation, the concentration of new pollutants in water sample changes in the transportation process, resulting in that the monitoring data after laboratory enrichment is inaccurate, and the actual concentration of new pollutants in water body cannot be truly reflected. This not only affects the accuracy of water quality monitoring, but also hinders the effective management of water pollution. UTILITY MODEL CONTENT

[0005] In view of one of the deficiencies of the prior art, the utility model provides a trace organic pollutant in water on -the -spot enrichment device, solves the collection problem of pollutants in water sample.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a trace organic pollutant in water on -the -spot enrichment device, comprising:

[0007] The water collecting assembly comprises a water collector, and the water collector has a containing cavity inside; the containing cavity inside the water collector is in communication with the external water conveying assembly, and the water collector can receive the original water sample needing to be sampled;

[0008] The conveying assembly comprises a pump, and the pump and the water collecting assembly are connected through a pipeline, and the original water sample collected from the water collector can be pumped out;

[0009] The adsorption tube is connected with the pump of the conveying assembly, and can collect pollutants in the water sample conveyed by the conveying assembly.

[0010] Preferably, further comprising:

[0011] The housing, the drive structure of the pump machine is arranged in the housing, and a human-computer interaction assembly is arranged on the housing; and the water collector of the water collecting assembly is arranged outside the housing.

[0012] Preferably, the housing further comprises:

[0013] The first connecting assembly is arranged outside the housing, and the water collector is connected to the housing through the first connecting assembly.

[0014] Preferably, the water collector is a bottle body, the first connecting assembly is a hoop body, and the water collector is sleeved in the first connecting assembly.

[0015] Preferably, the water collecting assembly further comprises:

[0016] The overflow pipe has an inlet end in communication with an inner top of the water collector;

[0017] The sampling pipe has an inlet end in communication with the inside of the water collector and an outlet end in communication with the conveying assembly;

[0018] The water inlet pipe has an inlet end in communication with the external water conveying assembly and an outlet end in communication with the inside of the water collector.

[0019] Preferably, a sampling hole is formed in the barrel wall of the water collector and corresponds to the inlet end of the sampling pipe; and a water inlet hole is formed in the barrel wall of the water collector and corresponds to the outlet end of the water inlet pipe.

[0020] The sampling hole is located above the water inlet hole.

[0021] Preferably, the water collecting assembly further comprises:

[0022] The water inlet three-way valve has one end in communication with the external water conveying assembly and serving as a water inlet end; one end connected to the water inlet pipe and serving as a water outlet end; and the other end serving as a water discharge end.

[0023] Preferably, the pump machine is a peristaltic pump, and the sampling pipe is connected to the liquid inlet end of the pump machine through the housing.

[0024] The conveying assembly further comprises:

[0025] The sample delivery pipeline has one end in communication with the liquid outlet end of the pump machine and the other end in communication with the adsorption pipe.

[0026] Preferably, the conveying assembly further comprises:

[0027] The conveying three-way valve is a three-way switch valve, and is arranged on the sample delivery pipeline.

[0028] Preferably, the housing further comprises:

[0029] A second connecting assembly is arranged on the outer wall of the shell, and the second connecting assembly can be hung with the adsorption tube; the second connecting assembly comprises:

[0030] A slide rail is fixedly arranged on the outer wall of the shell;

[0031] A hanger is in sliding connection with the slide rail, and a plurality of hanging positions for hanging the adsorption tube are arranged on the hanger;

[0032] The outlet end of the sample feeding pipeline is arranged towards the adsorption tube on the hanger, and a sample feeding connector is arranged at the end of the sample feeding pipeline towards the hanger, and the sample feeding connector can be inserted into the adsorption tube;

[0033] The second connecting assembly further comprises:

[0034] A baffle is arranged outside the shell, the baffle extends towards the adsorption tube, and the baffle is located below the adsorption tube connected with the sample feeding pipeline.

[0035] Compared with the prior art, the device has the following beneficial effects: the device can extract samples on the sampling site, and the quantitative samples are passed through the adsorption tube at the same time, so that the organic pollutants in the samples are enriched in the adsorption tube.

[0036] The water sample is enriched on the site by the enrichment device, which not only greatly reduces the pressure of the sampling personnel carrying the sample, but also reduces the time of the pretreatment link after returning to the laboratory. More importantly, the sample enriched on the site has better stability, can provide more accurate monitoring data, and provides a more reliable theoretical basis for environmental management. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application Figure 1 ;

[0038] Figure 2 is a schematic diagram of the overall structure of the embodiment of the present application Figure 2 ;

[0039] Figure 3 is a schematic diagram of the overall structure of the embodiment of the present application Figure 3 ;

[0040] Figure 4 is a partial enlarged view of A of Figure 3 ;

[0041] Figure 5 is a front view of the embodiment of the present application;

[0042] Figure 6 is a right view of the embodiment of the present application.

[0043] In the drawings:

[0044] 1, water collection assembly; 11, water collector; 12, overflow pipe; 13, sampling pipe; 14, water inlet pipe; 15, water inlet tee valve; 12, overflow pipe; 2, conveying assembly; 21, pump machine; 22, sample conveying pipeline; 23, conveying tee valve; 3, adsorption pipe; 4, shell; 41, human-computer interaction assembly; 42, first connecting assembly; 43, second connecting assembly; 44, baffle. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] Please refer to Figures 1-6 The present application provides the following technical solutions:

[0047] A device for enriching trace organic pollutants in water in situ, comprising a water collection assembly 1, a conveying assembly 2 and an adsorption pipe 3. The water collection assembly 1 comprises a water collector 11, and the water collector 11 has an accommodating cavity inside. The accommodating cavity inside the water collector 11 is in communication with an external water conveying assembly, and the water collector 11 can receive raw water samples conveyed by the external water conveying assembly. The conveying assembly 2 comprises a pump machine 21, and the pump machine 21 is a peristaltic pump. The pump machine 21 and the water collection assembly 1 are connected through a pipeline, and the pump machine 21 can draw water samples from the raw water samples collected in the water collector 11. The adsorption pipe 3 is connected with the pump machine 21 of the conveying assembly 2, and can collect pollutants from the water samples conveyed by the conveying assembly 2. The adsorption pipe 3 is an enrichment column adsorption pipe, and an adsorbent is placed inside the adsorption pipe 3. The adsorption pipe 3 and the adsorbent inside can be obtained by using existing technologies, and do not need to be separately manufactured. The external water conveying assembly also uses existing technologies, and only needs to meet the requirement of being able to draw water samples from a water area.

[0048] Through the structure of the present application, the external water conveying assembly continuously draws water in a water area, and then conveys the water to the water collector 11. Then, the pump machine 21 of the conveying assembly 2 draws the water samples from the water collector 11 and conveys them to the adsorption pipe 3, so as to complete the enrichment of organic pollutants in the water samples in situ.

[0049] On the basis of the above-mentioned embodiments, the present enrichment device further comprises a shell 4, and the main driving structure of the pump machine 21 is arranged in the shell 4. A human-computer interaction assembly 41 is arranged on the shell 4, and the human-computer interaction assembly 41 can use existing technologies, such as a touch screen or a control panel. The human-computer interaction assembly 41 is mainly used for displaying sampling time, flow rate and sampling volume, and controlling the flow rate and start-stop of the peristaltic pump. The specific implementation form of the human-computer interaction assembly 41 can use existing technologies, and will not be described here.

[0050] On the basis of the above-mentioned embodiments, the water collector 11 of the water collecting assembly 1 is hung outside the shell 4. The outer wall of the shell 4 is provided with a first connecting assembly 42, and the water collector 11 is connected with the shell 4 through the first connecting assembly 42.

[0051] In the present embodiment, the water collector 11 is a bottle, and the first connecting assembly 42 is a hoop structure which can be opened and closed, including a half part 1 fixedly connected with the shell 4, and a half part 2 hingedly connected with the half part 1, and the half part 1 and the half part 2 are connected through a snap hook. The half part 1 and the half part 2 are annularly formed to fix the water collector 11, and a flexible pad is arranged on the side of the water collector 11. The water collector 11 is sleeved inside the first connecting assembly 42.

[0052] On the basis of the above-mentioned embodiments, the bottle of the water collector 11 is respectively provided with an overflow hole, a sampling hole and a water inlet hole. The overflow hole is arranged at the top of the bottle of the water collector 11, the sampling hole is arranged in the middle of the side wall of the water collector 11, and the water inlet hole is arranged at the lower part of the side wall of the water collector 11. An overflow pipe 12 is arranged outside the water collector 11, and the inlet end of the overflow pipe 12 is connected with the overflow hole at the top of the water collector 11. A sampling pipe 13 is arranged at one side of the middle part of the water collector 11, the inlet end of the sampling pipe 13 is connected with the sampling hole of the water collector 11, the outlet end of the sampling pipe 13 is communicated with the conveying assembly 2, and the sampling pipe 13 penetrates through the shell 4 and is connected with the inlet end of the pump 21. The water inlet hole of the water collector 11 is connected with a water inlet pipe 14 outside, the inlet end of the water inlet pipe 14 is communicated with an external water conveying assembly, and the outlet end is communicated with the lower part inside the water collector 11 through the water inlet hole.

[0053] Through the structure, when the collected water sample enters the water collector 11, the water sample fills the containing cavity inside the water collector 11 from the bottom of the water collector 11, and the air can be discharged from the overflow pipe 12. When the conveying assembly 2 starts to extract the water sample, the water sample flows out from the sampling pipe 13. During the collection of the water sample, when the inside of the water collector 11 is filled, with the continuous injection of the water sample into the inside of the water collector 11, the water sample is discharged at the overflow pipe 12 to ensure that the water sample is updated in real time in the water collector 11.

[0054] Meanwhile, the pump 21, i.e. the peristaltic pump, quantitatively passes the water sample in the water collector 11 through the adsorption pipe 3 at a certain flow rate, and the new pollutants in the water can be uniformly penetrated to the adsorbent of the adsorption pipe, so that the pollutants are enriched.

[0055] On the basis of the above-mentioned embodiments, a water inlet three-way valve 15 is arranged at the end of the water inlet pipe 14 away from the water collector 11. One end of the three ports of the water inlet three-way valve 15 is communicated with an external water conveying assembly, as a water inlet end; one end is connected with the water inlet pipe 14, as a water outlet end conveying to the water collector 11; and the other end is as a water discharge end. The water inlet three-way valve 15 is an on-off three-way valve.

[0056] Because the external water delivery components may be under high pressure during delivery, the flow rate is adjusted by the inlet three-way valve 15 to slowly input water into the water collector 11.

[0057] Based on the above implementation scheme, the delivery assembly 2 also includes a sample delivery pipeline 22. One end of the sample delivery pipeline 22 is connected to the liquid outlet of the pump 21, and the other end can be connected to the adsorption tube 3. A delivery three-way valve 23 is provided in the sample delivery pipeline 22. The delivery three-way valve 23 is a three-way switch valve. One connection path inside the delivery three-way valve 23 is from the liquid outlet of the pump 21 to the liquid inlet of the adsorption tube 3, and the other connection path is from the liquid outlet of the pump 21 to the discharge end.

[0058] By setting a three-way valve 23, functions such as flushing and shutting off the sample delivery pipeline 22 can be achieved.

[0059] Based on the above implementation scheme, a second connecting component 43 is provided on the outer wall of the housing 4 adjacent to the first connecting component 42. The second connecting component 43 can be used to hang the adsorption tube 3. The second connecting component 43 includes a slide rail and a bracket, see [link to relevant documentation]. Figure 4 The slide rail is a vertical track structure fixed on the outer wall of the housing 4. The bracket and the slide rail are slidably connected. The bracket is provided with several mounting positions for hanging the adsorption tube 3. The mounting positions adopt a "C" shaped groove structure, which allows the adsorption tube 3 to be snapped into the mounting position.

[0060] by Figure 4 Taking the direction as an example, the adsorption tube 3 is set horizontally in the hanging position, and the outlet end of the sample delivery pipeline 22 is set horizontally toward the adsorption tube 3 on the hanger; the end of the sample delivery pipeline 22 facing the hanger is provided with a sample delivery connector 24, which can be inserted into the adsorption tube 3.

[0061] This structure allows multiple adsorption tubes 3 to be hung on the rack as needed. During enrichment sampling, simply adjust the rack position to align the corresponding adsorption tube 3 with the sample delivery connector 24, then push the adsorption tube 3 slightly within the rack to connect it to the sample delivery connector 24. The sample delivery connector 24 employs a flexible cylindrical structure to ensure a seal after connection with the adsorption tube 3.

[0062] With this structure, multiple adsorption tubes 3 can be placed directly on the outside of the enrichment device, which facilitates the attachment and switching of the adsorption tubes 3.

[0063] Based on the above implementation scheme, the second connecting assembly 43 further includes a baffle 44, which is disposed on the outer side of the housing 4. The baffle 44 is an "L-shaped" plate made of elastic material. The baffle 44 extends toward the adsorption tube 3 and is located below the adsorption tube 3 connected to the sample delivery line 22.

[0064] like Figure 4As shown, the baffle plate 44 is located below the liquid outlet end of the adsorption tube 3, and can also hold the adsorption tube 3. With the baffle plate 44, on the one hand, the adsorption tube 3 being sampled is supported and lifted to a certain extent, and on the other hand, the water sample discharged from the liquid outlet end of the adsorption tube 3 is guided to avoid direct dripping on the adsorption tube 3 below.

[0065] In the description of the present application and embodiments thereof, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0066] In the present application and embodiments thereof, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be in communication; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] In the present application and embodiments thereof, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0068] The above disclosure provides many different implementations or examples for implementing the different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0069] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that such additions and modifications be included within the scope of the application. It is the following claims, including any amendments thereto, which define the scope of the application.

[0070] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A device for on-site enrichment of trace organic pollutants in water, characterized in that, include: The water collection assembly includes a water collector with an internal receiving cavity; the internal receiving cavity of the water collector is connected to an external water delivery assembly, and the water collector can receive the raw water sample that needs to be sampled. The delivery assembly includes a pump, and the pump and the water collection assembly are connected by a pipeline to extract water samples from the raw water samples collected in the water collector. The adsorption tube is connected to the pump of the conveying assembly, which can collect pollutants from the water sample conveyed by the conveying assembly.

2. The on-site enrichment device for trace organic pollutants in water as described in claim 1, characterized in that, Also includes: The housing contains the pump drive structure, and a human-machine interface component is mounted on the housing. The water collector of the water collection assembly is located on the outside of the housing.

3. The on-site enrichment device for trace organic pollutants in water as described in claim 2, characterized in that, The housing also includes: A first connecting assembly is disposed on the outside of the housing, and the water collector is connected to the housing through the first connecting assembly.

4. The on-site enrichment device for trace organic pollutants in water as described in claim 3, characterized in that, The water collector is a bottle body, the first connecting component is a hoop body, and the water collector is fitted inside the first connecting component.

5. The on-site enrichment device for trace organic pollutants in water as described in claim 4, characterized in that, The water collection assembly also includes: An overflow pipe, the inlet end of which is connected to the inner top of the water collector; The sampling tube has its inlet end connected to the inside of the water collector and its outlet end connected to the conveying assembly. The inlet pipe is connected to the external water delivery assembly at its inlet end and to the interior of the water collector at its outlet end.

6. The on-site enrichment device for trace organic pollutants in water as described in claim 5, characterized in that, The water collector has a sampling hole on its cylindrical wall corresponding to the inlet end of the sampling tube; the water collector also has an inlet hole on its cylindrical wall corresponding to the outlet end of the water inlet tube. The sampling port is located above the water inlet.

7. The on-site enrichment device for trace organic pollutants in water as described in claim 5, characterized in that, The water collection assembly also includes: The inlet three-way valve has one end connected to the external water delivery assembly as the water inlet; one end connected to the inlet pipe as the water outlet; and the other end as the drain outlet.

8. The on-site enrichment device for trace organic pollutants in water as described in claim 6, characterized in that, The pump is a peristaltic pump, and the sampling tube passes through the housing and is connected to the pump's inlet end; The conveying assembly also includes: The sample delivery pipeline has one end connected to the liquid outlet of the pump and the other end connected to the adsorption tube.

9. The on-site enrichment device for trace organic pollutants in water as described in claim 8, characterized in that, The conveying assembly also includes: The three-way valve is a three-way on / off valve, and it is installed on the sample delivery pipeline.

10. The on-site enrichment device for trace organic pollutants in water as described in claim 9, characterized in that, The housing also includes: A second connecting component is disposed on the outer wall of the housing, and the second connecting component can be attached to the adsorption tube; the second connecting component includes: The slide rail is fixedly mounted on the outer wall of the housing. The bracket is slidably connected to the slide rail, and the bracket is provided with several mounting positions for attaching the adsorption tube. The outlet end of the sample delivery pipeline is positioned facing the adsorption tube on the hanger; a sample delivery connector is provided at the end of the sample delivery pipeline facing the hanger, and the sample delivery connector can be inserted into the adsorption tube. The second connection component also includes: A baffle is disposed on the outside of the housing, extending toward the adsorption tube, and located below the adsorption tube connected to the sample delivery line.

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