CN115561370A - Detection system and detection method for organic matters in water - Google Patents

Abstract

The invention belongs to the technical field of organic matter detection systems, and particularly relates to a detection system and a detection method for organic matters in water, wherein the detection system for the organic matters in water comprises: when the liquid inlet of the sample introduction device is in an open state, the sample liquid flows into the sampling pipeline through the sample introduction device to filter the silt; when the liquid inlet of the sample feeding device is switched to the closed state from the open state, the second liquid outlet is opened under the action of the water hammer effect of the water flow, so that the silt in the sample feeding device is discharged from the second liquid outlet; the invention can play a role in filtering silt in sample liquid, simultaneously avoids the blocking of the sampling device by the silt, can discharge the silt in the sampling device by opening or closing the sampling device each time, has simple operation and does not need manual intervention, the silt discharged from the sampling device is discharged outwards by taking the sampling device as a center instead of being directly discharged from the bottom of the sampling device, can ensure that a sampling pipeline is installed in a ground-attached manner, is convenient for arranging the pipeline and saves space.

Description

Detection system and detection method for organic matters in water

Technical Field

The invention belongs to the technical field of organic matter detection systems, and particularly relates to a system and a method for detecting organic matters in water.

Background

According to the requirements of 'guide book for detecting volatile organic compounds in water automatic on-line monitor' HJC-ZY84-2020 and 'environmental quality standard for surface water' (GB 3838-2002), the GC-FID + GC-ECD method technology is used for detecting the volatile organic compounds in water such as halogenated hydrocarbon, benzene series, chlorobenzene and the like, and the volatile organic compounds in the water need to be detected.

The transmission of the sample liquid needs to control the flow path switching through the valve body so as to realize different work flows of the system. In the in-service use process, because contain silt in the sample liquid, daily operation can cause the valve body wearing and tearing, so use the valve body in aquatic organic matter detecting system to be a consumables, need regularly change, if adopt the multiple selector valve high price, and change the difficulty.

Meanwhile, a traditional sampling pipeline needs to be installed at a long distance from the ground, the bottom of the valve body needs to be manually opened, silt is discharged from the valve body, the silt is accumulated below the valve body, if the sampling pipeline is installed in a ground-attached mode, the valve body cannot be operated to be opened, the silt is deposited in the valve body, a filter screen in the valve body can be plugged by the silt after a long time, the bottom of the valve body is manually opened, and the valve body can be cleaned at best in every day.

Therefore, it is necessary to develop a new system and method for detecting organic substances in water to solve the above problems.

Disclosure of Invention

The invention aims to provide a system and a method for detecting organic matters in water.

In order to solve the above technical problems, the present invention provides a system for detecting organic matters in water, comprising: the device comprises an upper computer, a sampling pipeline, a sample introduction device, an injection pump, a purging and trapping device and a gas chromatography detection device; the sampling device is provided with a liquid inlet, a first liquid outlet and a second liquid outlet, the liquid inlet of the sampling device is connected with a water inlet pipeline, and the first liquid outlet of the sampling device is connected with the input port of a sampling pipeline; the injection pump is positioned in a sampling pipeline, the output port of the sampling pipeline is connected with a purging and trapping device, and the purging and trapping device is connected with a gas chromatography detection device; when the liquid inlet of the sample introduction device is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the sample introduction device, so that the sample introduction device filters sediment in the sample liquid, and the sample introduction device collects flow data of the sample liquid flowing into the sampling pipeline so as to feed the flow data back to an upper computer; when the liquid inlet of the sample feeding device is switched to the closed state from the open state, the second liquid outlet is opened under the action of the water hammer effect of the water flow, so that the silt in the sample feeding device is discharged from the second liquid outlet; the injection pump extracts sample liquid from the sampling pipeline to be injected into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

Further, the sampling device includes: the sampling pipe, the inner sleeve and the sludge discharge mechanism; the sampling pipe is sleeved outside the inner sleeve pipe, and a liquid inlet cavity is formed between the sampling pipe and the inner sleeve pipe; the top of the inner sleeve is a liquid inlet, the first liquid outlet is positioned on the side wall of the sample inlet pipe, and the bottom of the inner sleeve is a second liquid outlet; a liquid inlet valve is arranged at the liquid inlet, the sludge discharge mechanism is movably arranged at the second liquid outlet, and a filter cavity is formed in the inner sleeve and positioned between the liquid inlet valve and the sludge discharge mechanism; a plurality of filter holes are distributed on the inner sleeve to communicate the filter cavity with the liquid inlet cavity; when the liquid inlet valve is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the filter cavity and the liquid inlet cavity, so that sediment in the sample liquid is filtered by the filter holes, and when the sample liquid impacts the sludge discharge mechanism, the sludge discharge mechanism collects flow data of the sample liquid flowing into the sampling pipe so as to feed the flow data back to an upper computer; when the liquid inlet valve is in an open state and is switched to a closed state, water flow in the filtering cavity pushes the mud discharging mechanism to move downwards under the action of a water hammer effect, so that the second liquid outlet is opened.

Further, arrange mud mechanism includes: a sludge discharge pipe and a sludge discharge assembly; the top of the sludge discharge pipe is connected with a second liquid outlet, and a plurality of sludge discharge ports are formed in the side wall of the sludge discharge pipe; the sludge discharge assembly is movably connected in the sludge discharge pipe and is exposed out of the top of the sludge discharge pipe to extend into the inner sleeve; the sample liquid in the filter cavity impacts the sludge discharge assembly to drive the sludge discharge assembly to rotate, the sludge discharge assembly collects flow data of the sample liquid flowing into the sampling pipe and feeds the flow data back to an upper computer, when the sample liquid in the filter cavity pushes the sludge discharge assembly to move downwards until all sludge discharge ports are communicated with the filter cavity, and silt in the filter cavity is discharged from all sludge discharge ports so that the silt is annularly distributed on the outer side of the sludge discharge pipe.

Further, arrange the mud subassembly and be located the below of filtration pore.

Further, the mud discharge assembly comprises: a sludge discharge unit and a compression spring; the compression spring is positioned in the mud discharging pipe, one end of the compression spring is connected with the bottom of the mud discharging pipe, the other end of the compression spring is connected with the bottom of the mud discharging unit, and the mud discharging unit is exposed from the top of the mud discharging pipe to extend into the inner sleeve; the sample liquid in the filtering cavity impacts the sludge discharge unit to drive the sludge discharge unit to rotate, the sludge discharge unit collects flow data of the sample liquid flowing into the sampling pipe and feeds the flow data back to an upper computer, and when the sample liquid in the filtering cavity pushes the sludge discharge unit and the compression spring to move downwards until the sludge discharge unit is positioned below each sludge discharge port, namely, each sludge discharge port is communicated with the filtering cavity.

Further, the mud discharging unit includes: a feedback motor and a rotating disk; an output shaft of the feedback motor is connected with the rotating disc, and the bottom of the feedback motor is connected with the end part of the compression spring; the sample liquid in the filter cavity impacts the rotating disc to drive the rotating disc to rotate; the rotating disc drives an output shaft of the feedback motor to rotate, so that the encoder collects the rotating speed of the feedback motor, namely the feedback motor collects flow data of sample liquid flowing into the sampling pipe according to the rotating speed, and the flow data are fed back to an upper computer.

Furthermore, a plurality of rotating strips are annularly distributed on the rotating disk, and each rotating strip is radially arranged on the rotating disk; the sample liquid in the filter cavity impacts each rotating strip to drive the rotating disk to rotate.

Furthermore, the inside wall of mud pipe vertically is provided with the slip track, seted up corresponding spout on feedback motor, the rotating disc to make feedback motor and rotating disc move along the slip track in the mud pipe.

Further, the purge and trap apparatus includes: purging the trap instrument; the gas chromatography detection device comprises: a gas chromatography analyzer; the upper computer drives the purging and trapping instrument to work so as to blow volatile organic compounds in the sample liquid into the gas chromatographic analyzer; and the upper computer drives the gas chromatographic analyzer to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

In another aspect, the present invention provides a detection method using the above system for detecting organic substances in water, comprising: when the liquid inlet of the sample introduction device is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the sample introduction device so that the sample introduction device filters silt in the sample liquid, and the sample introduction device collects flow data of the sample liquid flowing into the sampling pipeline so as to feed the flow data back to the upper computer; when the liquid inlet of the sample feeding device is switched to the closed state from the open state, the second liquid outlet is opened under the action of the water hammer effect of the water flow, so that the silt in the sample feeding device is discharged from the second liquid outlet; the injection pump pumps out sample liquid from the sampling pipeline to be injected into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

The sampling device has the advantages that the sampling device is connected with the water inlet pipeline and the sampling pipeline, so that the effect of filtering silt in sample liquid can be achieved, meanwhile, the sampling device can continuously stir the sample liquid, the sampling device is prevented from being blocked by the silt, the silt in the sampling device can be discharged when the sampling device is opened or closed every time, the operation is simple, manual intervention is not needed, the silt discharged from the sampling device is discharged outwards by taking the sampling device as a center instead of being directly discharged from the bottom of the sampling device, the sampling pipeline can be installed in a clinging manner, the pipeline is convenient to arrange, and the space is saved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block diagram of an in-water organic detection system of the present invention;

FIG. 2 is a partially enlarged view of the sample introduction device on the sampling pipeline of the present invention;

FIG. 3 is a block diagram of a sample injection device of the present invention;

FIG. 4 is an exploded view of the sample introduction device of the present invention;

FIG. 5 is a block diagram of a sample inlet tube of the present invention;

FIG. 6 is a block diagram of the inner cannula of the present invention;

FIG. 7 is a structural view of the sludge discharging mechanism of the present invention;

FIG. 8 is a cross-sectional view of a sample injection device of the present invention;

FIG. 9 is a diagram illustrating the liquid inlet of the present invention in a state of being opened and being closed.

In the figure:

1. a sampling pipe;

2. a sample introduction device; 21. a sample inlet pipe; 211. a first liquid outlet; 212. a liquid inlet cavity; 22. an inner sleeve; 221. a liquid inlet; 222. a second liquid outlet; 223. a filter chamber; 224. a filtration pore; 23. a sludge discharge mechanism; 231. a sludge discharge pipe; 2311. a sludge discharge port; 232. a sludge discharge assembly; 2321. a sludge discharge unit; 23211. a feedback motor; 23212. rotating the disc; 23213. rotating the strip; 2322. a compression spring;

3. an injection pump;

4. and a liquid inlet valve.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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.

Example 1

In this embodiment, as shown in fig. 1 to 9, the present embodiment provides a system for detecting organic substances in water, which includes: the device comprises an upper computer, a sampling pipeline 1, a sample introduction device 2, an injection pump 3, a purging and trapping device and a gas chromatography detection device; the sample introduction device 2 is provided with a liquid inlet 221, a first liquid outlet 211 and a second liquid outlet 222, the liquid inlet 221 of the sample introduction device 2 is connected with a water inlet pipeline, and the first liquid outlet 211 of the sample introduction device 2 is connected with an input port of the sampling pipeline 1; the injection pump 3 is positioned in the sampling pipeline 1, the output port of the sampling pipeline 1 is connected with a purging and trapping device, and the purging and trapping device is connected with a gas chromatography detection device; when the liquid inlet 221 of the sample introduction device 2 is in an open state, the sample liquid in the water inlet pipeline flows into the sampling pipeline 1 through the sample introduction device 2, so that the sample introduction device 2 filters the sediment in the sample liquid, and the sample introduction device 2 collects flow data of the sample liquid flowing into the sampling pipeline so as to feed the flow data back to the upper computer; when the liquid inlet 221 of the sample introduction device 2 is switched from the open state to the closed state, the second liquid outlet 222 is opened under the water hammer effect of the water flow, so that the silt in the sample introduction device 2 is discharged from the second liquid outlet 222; the injection pump 3 extracts sample liquid from the sampling pipeline 1 to inject the sample liquid into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

In this embodiment, this embodiment connects inlet channel and sampling pipeline 1 through sampling device 2, can play the effect of silt in the filtration sample liquid, sampling device 2 can constantly stir sample liquid simultaneously, avoid silt to plug sampling device 2, and open or close sampling device 2 at every turn and can both discharge silt in sampling device 2, easy operation just need not artificial intervention, the silt of discharging uses sampling device 2 to outwards discharge as the center from sampling device 2, and the indirect bottom discharge from sampling device 2, can make sampling pipeline 1 install with pasting, conveniently lay the pipeline and save space.

In this embodiment, the sample injection device 2 includes: a sample inlet pipe 21, an inner sleeve 22 and a sludge discharge mechanism 23; the sampling tube 21 is sleeved outside the inner sleeve 22, and a liquid inlet cavity 212 is formed between the sampling tube 21 and the inner sleeve 22; the top of the inner sleeve 22 is a liquid inlet 221, the first liquid outlet 211 is located on the side wall of the sample inlet tube 21, and the bottom of the inner sleeve 22 is a second liquid outlet 222; a liquid inlet valve 4 is arranged at the liquid inlet 221, the sludge discharge mechanism 23 is movably arranged at the second liquid outlet 222, and a filter cavity 223 is formed in the inner sleeve 22 and between the liquid inlet valve 4 and the sludge discharge mechanism 23; a plurality of filtering holes 224 are annularly distributed on the inner sleeve 22 so as to communicate the filtering cavity 223 with the liquid inlet cavity 212; when the liquid inlet valve 4 is in an open state, the sample liquid in the water inlet pipeline flows into the sampling pipeline 1 through the filter cavity 223 and the liquid inlet cavity 212, so that the sediment in the sample liquid is filtered by each filter hole 224, and when the sample liquid impacts the sludge discharge mechanism 23, the sludge discharge mechanism 23 collects flow data of the sample liquid flowing into the sampling pipeline so as to feed back the flow data to an upper computer; when the liquid inlet valve 4 is in an open state and is switched to a closed state, the water flow in the filter cavity 223 pushes the mud discharging mechanism 23 to move downwards under the action of the water hammer effect, so as to open the second liquid outlet 222.

In this embodiment, the inlet channel, sampling pipe 1 is the trunk line, feed liquor valve 4 switches into the opening state's the twinkling of an eye from the closing state, also can form the water hammer effect in the filter chamber 223, therefore, mud discharging mechanism 23 moves down and opens second liquid outlet 222 under the water hammer effect, because interior sleeve 22 can filter sample liquid, the silt of straining leaves in filter chamber 223, open as second liquid outlet 222, silt just can flow out from second liquid outlet 222 in the filter chamber 223, feed liquor valve 4 is in the opening state and switches into the closing state's the twinkling of an eye simultaneously, also can clear up silt in the filter chamber 223, thereby mud discharging mechanism 23 can play the effect of silt in the filtration sample liquid.

In the present embodiment, the sludge discharge mechanism 23 includes: a sludge discharge pipe 231 and a sludge discharge assembly 232; the top of the sludge discharge pipe 231 is connected with the second liquid outlet 222, and the side wall of the sludge discharge pipe 231 is provided with a plurality of sludge discharge ports 2311; the sludge discharge assembly 232 is movably connected in the sludge discharge pipe 231, and the sludge discharge assembly 232 is exposed out of the top of the sludge discharge pipe 231 to extend into the inner sleeve 22; the sample liquid in the filter cavity 223 impacts the mud discharging assembly 232 to drive the mud discharging assembly 232 to rotate, the mud discharging assembly 232 collects flow data of the sample liquid flowing into the sampling pipe to feed the flow data back to an upper computer, the sample liquid in the filter cavity 223 pushes the mud discharging assembly 232 to move downwards until the mud discharging ports 2311 are communicated with the filter cavity 223, and silt in the filter cavity 223 is discharged from the mud discharging ports 2311, so that the silt is distributed on the outer side of the mud discharging pipe 231 in a surrounding mode.

In this embodiment, mud pipe 231 is located into appearance pipe 21, the bottom of interior sleeve pipe 22, each row's mud mouth 2311 is seted up in the side of mud pipe 231 simultaneously, consequently, when row's mud subassembly 232 removed to each row's mud mouth 2311 below, silt can be discharged from each row's mud mouth 2311 in the filter chamber 223, the outside distribution of centre is used as to the mud pipe 231 to the silt of discharging simultaneously, and the bottom at the valve body is directly piled up to non-traditional valve body, it just can make sampling pipeline 1 set up to paste to set up like this, conveniently lay the pipeline and save space, still conveniently clear up simultaneously from the silt of mud pipe 231 discharge.

In this embodiment, the sludge discharge assembly 232 is located below the filter holes 224.

In this embodiment, since the topmost end of the mud discharging assembly 232 is located below the lowest filter hole 224, the filter hole 224 is not blocked by the mud deposited on the mud discharging assembly 232, and the mud in the filter cavity 223 can be completely released.

In this embodiment, the sludge discharging assembly 232 includes: a mud discharging unit 2321 and a compression spring 2322; the compression spring 2322 is positioned in the sludge discharge pipe 231, one end of the compression spring 2322 is connected with the bottom of the sludge discharge pipe 231, the other end of the compression spring 2322 is connected with the bottom of the sludge discharge unit 2321, and the sludge discharge unit 2321 is exposed from the top of the sludge discharge pipe 231 to extend into the inner sleeve 22; the sample liquid in the filter cavity 223 impacts the sludge discharge unit 2321 to drive the sludge discharge unit 2321 to rotate, the sludge discharge unit 2321 collects flow data of the sample liquid flowing into the sampling tube to feed back the flow data to an upper computer, and when the sample liquid in the filter cavity 223 pushes the sludge discharge unit 2321 and the compression spring 2322 to move downwards until the sludge discharge unit 2321 is located below each sludge discharge port 2311, that is, each sludge discharge port 2311 is communicated with the filter cavity 223.

In this embodiment, when the liquid inlet valve 4 is in the open state, the flow of the sample liquid in the filter cavity 223 is relatively stable, the pressure received by the compression spring 2322 is balanced with the elastic force of the compression spring 2322, the compression spring 2322 is in the undeformed state, at this time, the mud discharging unit 2321 isolates the filter cavity 223 from each mud discharging port 2311, the sample liquid in the filter cavity 223 is filtered by each filter hole 224 and enters the liquid inlet cavity 212, and the filtered mud remains in the filter cavity 223, when the liquid inlet valve 4 is in the open state, the closed state or the closed state is switched to the open state, the pressure received by the compression spring 2322 is greater than the elastic force of the compression spring 2322, the compression spring 2322 is pressed to be in the deformed state, at this time, the mud discharging unit 2321 is pressed down until each mud discharging port 2311 is opened, so that the filter cavity 223 is communicated with each mud discharging port 2311, and the mud in the filter cavity 223 is discharged from each mud discharging port 2311.

In this embodiment, the sludge discharging unit 2321 includes: a feedback motor 23211 and a rotating disk 23212; an output shaft of the feedback motor 23211 is connected with a rotating disc 23212, and the bottom of the feedback motor 23211 is connected with the end of a compression spring 2322; the sample liquid in the filter chamber 223 impacts the rotating disk 23212 to drive the rotating disk 23212 to rotate; the rotating disc 23212 drives the output shaft of the feedback motor 23211 to rotate, so that the encoder acquires the rotation speed of the feedback motor 23211, that is, the feedback motor 23211 acquires flow data of the sample liquid flowing into the sampling tube according to the rotation speed, so as to feed the flow data back to the upper computer.

In this embodiment, drive feedback motor 23211 through rotating disc 23212 and rotate, can real time monitoring flow data that flows into the interior sample liquid of sampling tube, for intelligent control provides the basis, also can monitor the number of times of clearance silt in filter 223 simultaneously, is convenient for keep filter 223's cleanliness.

In the present embodiment, a plurality of rotating bars 23213 are distributed on the rotating disk 23212, and each rotating bar 23213 is radially disposed on the rotating disk 23212; sample liquid in the filter cavity 223 impacts each rotating bar 23213 to drive the rotating disk 23212 to rotate.

In this embodiment, the rotating bar 23213 can drive the rotating disc 23212 to rotate under the impact of the sample liquid, and the rotating bar 23213 stirs the sample liquid in the filter cavity 223, so as to prevent the sediment from adhering to the inner casing 22 and the rotating disc 23212, and reduce the risk that the sediment blocks each filter hole 224, thereby ensuring the stability of the continuous operation of the underwater organic matter detection system.

In this embodiment, a sliding track is longitudinally disposed on an inner side wall of the mud pipe 231, and the feedback motor 23211 and the rotating disc 23212 are provided with corresponding sliding grooves, so that the feedback motor 23211 and the rotating disc 23212 move along the sliding track in the mud pipe 231, and the feedback motor 23211 and the rotating disc 23212 can be prevented from tilting, so that the rotating disc 23212 is clamped with the mud pipe 231, and the stability of the movement of the feedback motor 23211 and the rotating disc 23212 in the mud pipe 231 is ensured.

In this embodiment, the purge and trap apparatus includes: purging and trapping instrument; the gas chromatography detection device comprises: a gas chromatography analyzer; the upper computer drives the purging and trapping instrument to work so as to blow volatile organic compounds in the sample liquid into the gas chromatographic analyzer; and the upper computer drives the gas chromatographic analyzer to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

Example 2

On the basis of embodiment 1, this embodiment provides a detection method using the system for detecting organic matters in water as provided in embodiment 1, which includes: when the liquid inlet 221 of the sample introduction device 2 is in an open state, the sample liquid in the water inlet pipeline flows into the sampling pipeline 1 through the sample introduction device 2, so that the sample introduction device 2 filters the sediment in the sample liquid, and the sample introduction device 2 collects flow data of the sample liquid flowing into the sampling pipeline so as to feed the flow data back to the upper computer; when the liquid inlet 221 of the sample introduction device 2 is switched to the closed state from the open state, the second liquid outlet 222 is opened under the water hammer effect of the water flow, so that the silt in the sample introduction device 2 is discharged from the second liquid outlet 222; the injection pump 3 extracts sample liquid from the sampling pipeline 1 to inject the sample liquid into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

In summary, the sampling device is connected with the water inlet pipeline and the sampling pipeline, so that the effect of filtering silt in the sample liquid can be achieved, meanwhile, the sampling device can continuously stir the sample liquid, the sampling device is prevented from being blocked by the silt, the silt in the sampling device can be discharged when the sampling device is opened or closed every time, the operation is simple, manual intervention is not needed, the silt discharged from the sampling device is discharged outwards by taking the sampling device as a center instead of directly discharging from the bottom of the sampling device, the sampling pipeline can be installed in a ground-mounted mode, the pipeline is convenient to arrange, and the space is saved.

The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. An aquatic organism detection system, comprising:

the device comprises an upper computer, a sampling pipeline, a sample introduction device, an injection pump, a purging and trapping device and a gas chromatography detection device; wherein

The sampling device is provided with a liquid inlet, a first liquid outlet and a second liquid outlet, the liquid inlet of the sampling device is connected with a water inlet pipeline, and the first liquid outlet of the sampling device is connected with the input port of a sampling pipeline;

the injection pump is positioned in a sampling pipeline, the output port of the sampling pipeline is connected with a purging and trapping device, and the purging and trapping device is connected with a gas chromatography detection device;

when the liquid inlet of the sample introduction device is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the sample introduction device, so that the sample introduction device filters sediment in the sample liquid, and the sample introduction device collects flow data of the sample liquid flowing into the sampling pipeline so as to feed the flow data back to an upper computer;

when the liquid inlet of the sample introduction device is switched from an open state to a closed state, the second liquid outlet is opened under the action of the water hammer effect of the water flow, so that silt in the sample introduction device is discharged from the second liquid outlet;

the injection pump pumps out sample liquid from the sampling pipeline to be injected into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and

the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

2. The aquatic organism detection system according to claim 1,

the sampling device comprises: the sampling pipe, the inner sleeve and the sludge discharge mechanism;

the sampling pipe is sleeved outside the inner sleeve pipe, and a liquid inlet cavity is formed between the sampling pipe and the inner sleeve pipe;

the top of the inner sleeve is a liquid inlet, the first liquid outlet is positioned on the side wall of the sample inlet pipe, and the bottom of the inner sleeve is a second liquid outlet;

a liquid inlet valve is arranged at the liquid inlet, the sludge discharge mechanism is movably arranged at the second liquid outlet, and a filter cavity is formed in the inner sleeve and positioned between the liquid inlet valve and the sludge discharge mechanism;

a plurality of filter holes are distributed on the inner sleeve to communicate the filter cavity with the liquid inlet cavity;

when the liquid inlet valve is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the filter cavity and the liquid inlet cavity, so that silt in the sample liquid is filtered by the filter holes, and when the sample liquid impacts the sludge discharge mechanism, the sludge discharge mechanism collects flow data of the sample liquid flowing into the sampling pipe so as to feed the flow data back to the upper computer;

when the liquid inlet valve is in an open state and is switched to a closed state, water flow in the filtering cavity pushes the mud discharging mechanism to move downwards under the action of a water hammer effect, so that the second liquid outlet is opened.

3. The aquatic organism detection system according to claim 2,

arrange mud mechanism includes: a sludge discharge pipe and a sludge discharge assembly;

the top of the sludge discharge pipe is connected with a second liquid outlet, and a plurality of sludge discharge ports are formed in the side wall of the sludge discharge pipe;

the sludge discharge assembly is movably connected in the sludge discharge pipe and is exposed out of the top of the sludge discharge pipe to extend into the inner sleeve;

the sample liquid in the filter cavity impacts the sludge discharge assembly to drive the sludge discharge assembly to rotate, the sludge discharge assembly collects flow data of the sample liquid flowing into the sampling pipe and feeds the flow data back to an upper computer, when the sample liquid in the filter cavity pushes the sludge discharge assembly to move downwards until all sludge discharge ports are communicated with the filter cavity, and silt in the filter cavity is discharged from all sludge discharge ports so that the silt is annularly distributed on the outer side of the sludge discharge pipe.

4. The aquatic organism detection system according to claim 3,

the mud discharging assembly is located below the filtering holes.

5. The aquatic organism detection system according to claim 3,

arrange the mud subassembly and include: a sludge discharge unit and a compression spring;

the compression spring is positioned in the mud discharging pipe, one end of the compression spring is connected with the bottom of the mud discharging pipe, the other end of the compression spring is connected with the bottom of the mud discharging unit, and the mud discharging unit is exposed from the top of the mud discharging pipe to extend into the inner sleeve;

the sample liquid in the filter cavity impacts the sludge discharge unit to drive the sludge discharge unit to rotate, the sludge discharge unit collects flow data of the sample liquid flowing into the sampling pipe to feed the flow data back to an upper computer, and when the sample liquid in the filter cavity pushes the sludge discharge unit and the compression spring to move downwards until the sludge discharge unit is positioned below each sludge discharge port, namely the sludge discharge unit is positioned below each sludge discharge port

Each sludge discharge port is communicated with the filter cavity.

6. The aquatic organism detection system according to claim 5,

the mud discharging unit comprises: a feedback motor and a rotating disk;

an output shaft of the feedback motor is connected with the rotating disc, and the bottom of the feedback motor is connected with the end part of the compression spring;

the sample liquid in the filter cavity impacts the rotating disc to drive the rotating disc to rotate;

the rotating disc drives the output shaft of the feedback motor to rotate, so that the encoder acquires the rotating speed of the feedback motor, namely

The feedback motor collects flow data of sample liquid flowing into the sampling pipe according to the rotating speed so as to feed the flow data back to the upper computer.

7. The aquatic organism detection system according to claim 6,

a plurality of rotating strips are annularly distributed on the rotating disk, and each rotating strip is radially arranged on the rotating disk;

the sample liquid in the filter cavity impacts each rotating strip to drive the rotating disc to rotate.

8. The aquatic organism detection system according to claim 6,

the inner side wall of the sludge discharge pipe is longitudinally provided with a sliding track, and the feedback motor and the rotating disc are provided with corresponding sliding grooves so that the feedback motor and the rotating disc move along the sliding track in the sludge discharge pipe.

9. The aquatic organism detection system according to claim 1,

the purge trap apparatus includes: purging the trap instrument;

the gas chromatography detection device comprises: a gas chromatography analyzer;

the upper computer drives the purging and trapping instrument to work so as to blow volatile organic compounds in the sample liquid into the gas chromatographic analyzer; and

the upper computer drives the gas chromatographic analyzer to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

10. A method of testing an organic matter detection system in water according to any one of claims 1 to 9, comprising:

when the liquid inlet of the sample feeding device is in an open state, sample liquid in the water inlet pipeline flows into the sampling pipeline through the sample feeding device, so that the sample feeding device filters sediment in the sample liquid, and the sample feeding device collects flow data of the sample liquid flowing into the sampling pipeline and feeds the flow data back to the upper computer;

when the liquid inlet of the sample feeding device is switched to the closed state from the open state, the second liquid outlet is opened under the action of the water hammer effect of the water flow, so that the silt in the sample feeding device is discharged from the second liquid outlet;

the injection pump extracts sample liquid from the sampling pipeline to be injected into the purging and trapping device, and the upper computer drives the purging and trapping device to work so as to blow volatile organic compounds in the sample liquid into the gas chromatography detection device; and

the upper computer drives the gas chromatography detection device to detect corresponding component data in the volatile organic compounds so as to upload the component data to the server.

Images