CN115839868B - Back-cleaning head matched with target sampling device - Google Patents
Back-cleaning head matched with target sampling device Download PDFInfo
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- CN115839868B CN115839868B CN202211328393.XA CN202211328393A CN115839868B CN 115839868 B CN115839868 B CN 115839868B CN 202211328393 A CN202211328393 A CN 202211328393A CN 115839868 B CN115839868 B CN 115839868B
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The present disclosure provides a counter-cleaning head that mates with a targeted sampling device. The back cleaning head comprises a closed cylinder body and a one-way flow guide pipe. The device is convenient for cleaning equipment in the target sampling device and the sample monitoring device, in particular, the one-way check valve in the one-way flow guide pipe plays a role in controlling one-way flow direction, and is beneficial to realizing automatic sampling and automatic cleaning functions of the system. And the liquid collecting groove arranged on the bottom wall of the cylinder body and the multiple cleaning input ports arranged in the liquid collecting groove improve the residual cleaning efficiency.
Description
Technical Field
The disclosure relates to the technical field of environmental monitoring, in particular to a back washing head matched with a target sampling device.
Background
Among the many groundwater pollutants, organic pollutants are a difficulty and focus of remediation. After entering groundwater, organic pollutants usually pollute the groundwater in a Non-aqueous phase liquid (called Non-aqueous Phase Liquids, NAPLs for short) form, wherein the density of the organic pollutants is less than that of water and floating on the surface, the organic pollutants are called Light Non-aqueous phase liquid (called Light Non-Aqueous Phase Liquid, LNAPL for short) which is more Dense than water and is more submerged in the bottom, the density of the organic pollutants is called heavy Non-aqueous phase liquid (called heavy Non-Aqueous Phase Liquid, DNAPL for short) which is more or less Dense than water, and the migration motion rule and pollution diffusion path of the NAPLs pollutants in the groundwater are very complex because the specific gravity of the NAPLs pollutants are more or less than that of water.
NAPLs real-time sampling and online monitoring are carried out on the groundwater in the high risk area, and the method has important significance for effectively preventing groundwater pollution and guaranteeing groundwater environment quality safety.
The groundwater sampler includes a single-use and low-cost belleville tube and a reusable and costly balloon pump. Before the airbag pump is reused, the samples of the groundwater remained in the cylinder body of the airbag pump and the pipelines need to be thoroughly and cleanly cleaned, otherwise, the residual samples can interfere with the accuracy of the newly collected samples in monitoring.
At present, the cleaning work mainly depends on manual work to clean through dismantling the air bag pump and the pipeline, and is time-consuming and labor-consuming, and the cleaning quality is not necessarily guaranteed.
Accordingly, the present disclosure provides a counter-rinsing head that is compatible with a targeted sampling device to address one of the above-mentioned issues.
Disclosure of Invention
The present disclosure is directed to a backwashing head configured to a target sampling device, which can solve at least one technical problem mentioned above. The specific scheme is as follows:
according to a specific embodiment of the present disclosure, the present disclosure provides a counter-rinsing head for use with a targeted sampling device, comprising:
a closed cartridge comprising: a barrel output port, a cleaning input port and a barrel connecting part; the cylinder output port is formed on the top wall of the cylinder; the cleaning input port is formed at the lowest point of the inner cylinder wall of the cylinder body; the cylinder connecting part is arranged at the upper part of the outer side wall of the cylinder and is used for being connected with the lowest point of the unidirectional air bag pump sampler in the target sampling device, through which the environmental sample flows;
The one-way flow guide pipe is communicated with the cleaning input port at the outlet end, a one-way check valve is arranged in the one-way flow guide pipe, cleaning medium in the one-way flow guide pipe flows into the cylinder body in one way through the one-way check valve, and the cleaning medium comprises cleaning liquid or cleaning gas.
Optionally, the one-way check valve comprises a one-way diaphragm check valve.
Optionally, a sampling part is further arranged in the cylinder;
the sampling part comprises a sampling port formed on the wall of the cylinder body and a ball check valve arranged on the sampling port and used for enabling an environmental sample in the water body environment to flow into the cylinder body in one way.
Optionally, the sampling part is disposed on the bottom wall of the cylinder.
Optionally, the barrel diapire includes integrated into one piece's collection liquid recess and groove top platform, sampling part set up in the groove top platform.
Optionally, the liquid collection groove is configured as an annular groove surrounding the bottom wall of the cartridge.
Optionally, the inner ring groove wall of the annular groove is configured as a slope structure converging toward the groove top platform.
Optionally, a plurality of cleaning input ports are formed on the groove wall on at least one side of the annular groove, and at least one cleaning input port is formed on the lowest point of the annular groove.
Optionally, the plurality of cleaning input ports are uniformly distributed on the outer ring groove wall of the annular groove, and each cleaning input port is positioned at the lowest point of the annular groove;
the outlet end of the unidirectional flow guide pipe and the outer cylinder wall of the cylinder body are constructed into an annular channel, and the annular channel is communicated with the cleaning input ports.
Optionally, the included angle between the input angles of the plurality of cleaning input ports and the horizontal plane is periodically changed.
Compared with the prior art, the scheme of the embodiment of the disclosure has at least the following beneficial effects:
the present disclosure provides a counter-cleaning head that mates with a targeted sampling device. The back cleaning head comprises a closed cylinder body and a one-way flow guide pipe. The device is convenient for cleaning equipment in the target sampling device and the sample monitoring device, in particular, the one-way check valve in the one-way flow guide pipe plays a role in controlling one-way flow direction, and is beneficial to realizing automatic sampling and automatic cleaning functions of the system. And the liquid collecting groove arranged on the bottom wall of the cylinder body and the multiple cleaning input ports arranged in the liquid collecting groove improve the residual cleaning efficiency.
Drawings
FIG. 1 illustrates a schematic diagram of a non-aqueous liquid monitoring system according to an embodiment of the present disclosure;
FIG. 2 illustrates a schematic diagram of a non-aqueous liquid monitoring system according to an embodiment of the present disclosure;
FIG. 3 shows a monitoring probe in a monitoring probe assembly at the same monitoring depth;
FIG. 4 shows a schematic diagram of a unidirectional sampling assembly;
FIG. 5 shows a schematic illustration of the connection of the backwash head to the air bag pump chamber;
figure 6 shows a front cross-sectional view of a counter-cleaning head;
FIG. 7 shows an elevational cross-section of another anti-rinse head;
FIG. 8 shows a top cross-sectional view of a circular cartridge bottom wall;
FIG. 9 shows a cross-sectional elevation of a cartridge bottom wall;
FIG. 10 shows a top cross-sectional view of another cartridge bottom wall;
description of the reference numerals
1-central control device, 2-real-time monitoring device, 3-target sampling device, 4-sample monitoring device, 5-cleaning device, 6-power supply device, 7-surface, 8-monitoring well, 9-monitoring depth and 10-wellhead protection device;
the system comprises a probe protection frame 21-a monitoring driver 22-a monitoring probe assembly 23-a first liquid level monitoring probe 24-a first non-aqueous liquid monitoring probe 25-a conventional water quality monitoring probe 26-a chemical composition monitoring probe 27-a first non-aqueous liquid monitoring probe;
31-a one-way sampling assembly, 32-a sampling driver, 33-an adjustable sampling air pump and 34-a sampling pipeline;
311-a second liquid level monitoring probe, 312-a unidirectional air bag pump sampler;
3121-balloon pump cavity, 3122-first ball check valve, 3123-second ball check valve;
41-sample collector, 42-sample monitoring device, 43-sample recoverer, 44-drain valve, 45-collection pipe;
51-gas container, 52-gas valve, 53-liquid container, 54-liquid valve, 55-purge input pump, 56-reverse purge head, 57-three-way valve, 58-purge recoverer, 59-input line, 5A-output line
561-cylinder, 562-unidirectional flow guide pipe
5611-a barrel output port, 5612-a cleaning input port, 5613-a barrel connecting portion, 5614-a barrel top wall, 5615-a barrel bottom wall, 5616-a sampling portion;
56151-a liquid collecting groove, 56152-a groove top platform;
56151 a-inner annular groove wall, 56151 b-outer annular groove wall;
5621-one-way check valve, 5622-annular channel.
Detailed Description
For the purpose of promoting an understanding of the principles and advantages of the disclosure, reference will now be made in detail to the drawings, in which it is apparent that the embodiments described are only some, but not all embodiments of the disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure, these descriptions should not be limited to these terms. These terms are only used to distinguish one from another. For example, a first may also be referred to as a second, and similarly, a second may also be referred to as a first, without departing from the scope of embodiments of the present disclosure.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product 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 product or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or device comprising such element.
In particular, the symbols and/or numerals present in the description, if not marked in the description of the figures, are not numbered.
Alternative embodiments of the present disclosure are described in detail below with reference to the drawings.
Example 1
Embodiments provided for by the present disclosure, namely embodiments of a non-aqueous liquid monitoring system.
Embodiments of the present disclosure are described in detail below with reference to the attached drawings.
As shown in fig. 1 and 2, a non-aqueous liquid monitoring system comprising: the system comprises a central control device 1, a real-time monitoring device 2, a target sampling device 3, a sample monitoring device 4, a cleaning device 5 and a power supply device 6.
The real-time monitoring device 2 is configured to acquire various real-time monitoring data of the corresponding monitoring depth 9 based on the monitoring instruction sent by the central control device 1 for each monitoring depth 9 in the water body environment of the monitoring well 8.
The water environment of the monitoring well 8 often contains unusual NAPLs, and the NAPLs pollutants have a specific gravity greater or less than that of water, so that the migration motion rule and the pollution diffusion path in the underground water are very complex. NAPLs real-time sampling and online monitoring are carried out on the groundwater in the high risk area, and the method has important significance for effectively preventing groundwater pollution and guaranteeing groundwater environment quality safety.
The central control device 1 is used for controlling functions such as equipment, data analysis, monitoring and early warning and the like. The monitoring instructions can control the real-time monitoring device 2 to reach each monitoring depth 9 and monitor the water quality of each monitoring depth 9, and various real-time monitoring data can be obtained at one time. Wherein, at least include first liquid level data and first nonaqueous phase liquid data in the multiple real-time supervision data. Furthermore, the method further comprises: water temperature value, conductivity value, pH value, oxidation-reduction potential value, turbidity value and ammonia nitrogen value; and a chemical composition comprising: benzene series, chemical oxygen demand, total suspended matter, tri-nitrogen and chloride, etc.
The disclosed embodiments monitor the water environment at a plurality of monitoring depths 9 under the control of the central control device 1. The plurality of monitoring depths 9 includes respective depths in the water environment of the monitoring well 8 starting 0.5 meters below the surface and equally spaced downwardly based on a preset spacing value, as well as depths downhole of the monitoring well 8. Thus, the central control device 1 can sequentially monitor the water quality at different monitoring depths 9 in the water environment, for example, detect the water quality in ascending or descending order of the monitoring depths 9. Optionally, the preset distance value is 2-10 meters. For example, the monitoring well 8 is 20 meters deep from the liquid level to the bottom of the well, the preset interval value is 2 meters from 0.5 meter below the liquid level in the water body environment, and the monitoring depths 9 are respectively: 0.5 meter, 2.5 meter, 4.5 meter, 6.5 meter, 8.5 meter, 10.5 meter, 12.5 meter, 14.5 meter, 16.5 meter, 18.5 meter, and a depth of 20 meters downhole of the monitoring well 8; based on the plurality of monitoring depths 9, the central control device 1 sequentially monitors from shallow to deep or from deep to shallow, so that the monitoring time can be saved. The water sample monitored according to the monitoring depths 9 can represent the quality of groundwater, the whole water body environment is monitored completely, and finally, the underground water at the bottom of the monitoring well 8 is monitored, so that the central control device 1 performs data analysis and simulates the condition of the groundwater environment in the monitoring well 8.
In some embodiments, the real-time monitoring device 2 includes: a probe protection frame 21, a monitoring driver 22 and a monitoring probe assembly 23 consisting of a plurality of monitoring probes.
Each monitoring probe of the monitoring probe assembly 23 is in communication with the central control device 1, and each monitoring probe is configured to acquire one type of real-time monitoring data of the corresponding monitoring depth 9 based on the monitoring instruction issued by the central control device 1 for each monitoring depth 9. Wherein, the monitoring probe assembly 23 comprises: a first level monitoring probe 24 (such as a drop-in level transmitter probe) for acquiring first level data, a first non-aqueous liquid monitoring probe 25 (such as an oil-water interface monitoring probe) for acquiring first non-aqueous liquid data, a conventional water quality monitoring probe 26 for acquiring water temperature values, conductivity values, pH values, redox potential values, turbidity values and ammonia nitrogen values, and a chemical composition monitoring probe 27 for acquiring benzene series, chemical oxygen demand, total suspended solids, tri-nitrogen and chloride. The monitoring probe assembly 23 can monitor the information of NAPLs substances, target pollutants, conventional water quality, groundwater level, the depth of the probe and the like in the water body environment in real time, and send the monitoring depth 9 and water quality data to the central control device 1 for data analysis. To ensure that each monitoring probe in the monitoring probe assembly 23 is able to obtain accurate real-time monitoring data at a monitoring depth 9, as shown in fig. 3, the monitoring depth 9 of the first fluid level monitoring probe 24 is consistent with the monitoring depths 9 of the other monitoring probes in the monitoring probe assembly 23. In the embodiment of the disclosure, the monitoring depth 9 reached by the real-time monitoring device 2 is the depth reached by the first liquid level monitoring probe 24 or other monitoring probes in the monitoring probe assembly 23.
The probe protection frame 21 is fixedly covered outside the monitoring probe assembly 23. For protecting the monitoring probe assembly 23 from damage by impact.
The monitoring driver 22 is in transmission connection with the monitoring probe assembly 23 and in communication connection with the central control device 1, and is configured to control the monitoring probe assembly 23 to reach the corresponding monitoring depth 9 based on a first driving instruction sent by the central control device 1 for each monitoring depth 9. For example, the monitoring driver 22 is drivingly connected to the monitoring probe assembly 23 by a transmission cord comprising a core material and a protective sheath surrounding the core material, the core material comprising: a power supply wire, a data transmission wire and a traction fiber pull wire; the power supply wire is used for supplying power to the monitoring probe assembly 23; the data transmission line is used for transmitting information with the central control device 1; the traction fiber stay wire is used for bearing the gravity of the monitoring probe assembly 23 and the probe protection frame 21; the protective sleeve has the characteristics of corrosion resistance and excellent physical properties, so that the whole transmission flexible wire can bear severe water environment, mechanical friction external force and the gravity of the monitoring probe assembly 23 and the probe protective frame 21, and the monitoring driver 22 can realize the directional free movement of the monitoring probe assembly 23 and the probe protective frame 21 in the water environment through the transmission flexible wire and the gravity of the monitoring probe assembly 23 and the probe protective frame 21.
The central control device 1 is configured to generate, for each monitoring depth 9, a first driving instruction of the corresponding monitoring depth 9 of the monitoring driver 22 based on the first liquid level data fed back by the first liquid level monitoring probe 24, respectively. For example, in a water environment, the monitoring well 8 is 20 meters deep from the liquid level to the bottom of the well, the current monitoring depth 9 is 6.5 meters, i.e. the first liquid level data is 6.5 meters, and the target monitoring depth 9 is 8.5 meters; the central control device 1 acquires first liquid level data fed back by the first liquid level monitoring probe 24 in real time in the process of controlling the monitoring probe assembly 23 to move from the current monitoring depth 9 to the target monitoring depth 9 through the monitoring driver 22, when the first liquid level data is inconsistent with the target monitoring depth 9, a first driving instruction reaching the target monitoring depth 9 is generated, the first driving instruction comprises driving direction information of the monitoring driver 22, the monitoring driver 22 receives the first driving instruction sent by the central control device 1, controls the length of a transmission flexible wire, adjusts the monitoring probe assembly 23 to reach the target monitoring depth 9, for example, if the first liquid level data is 7 meters and is different from the target monitoring depth 9 by +1.5 meters, the monitoring driver 22 rotates in a direction of lengthening the length of the transmission flexible wire; if the first liquid level data is 9 m, which is different from the target monitoring depth 9 by-1.5 m, the monitoring driver 22 rotates in a direction of shortening the length of the transmission cord; the central control device 1 acquires real-time monitoring data of the target monitoring depth 9 through the monitoring probe assembly 23. Thus, the central control device 1 can sequentially monitor the water quality at different monitoring depths 9 in the water environment, in particular to the LNAPL floating on the water surface and the DNAPL sinking on the water-proof bottom plate.
The targeted sampling device 3 is configured to collect environmental samples of the corresponding monitoring depth 9 in the water body environment based on sampling instructions sent by the central control device 1 for each monitoring depth 9. The target sampling device 3 in the embodiment of the present disclosure delivers the environmental sample to the sample monitoring device 4 for detection every time after the environmental sample is collected at one monitoring depth 9; after the sample monitoring device 4 detects, the target sampling device 3 collects the environmental sample to the next monitoring depth 9.
In some embodiments, the targeted sampling device 3 comprises: a unidirectional sampling assembly 31, a sampling driver 32 and an adjustable sampling air pump 33.
The unidirectional sampling assembly 31, which is communicatively connected to the central control device 1, is configured to collect the second liquid level data and the environmental samples at the respective monitoring depths 9 in real time.
In some embodiments, as shown in FIG. 4, the unidirectional sampling assembly 31 includes a second fluid level monitoring probe 311 (e.g., a plunge level transmitter probe) for acquiring second fluid level data and a unidirectional bladder pump sampler 312 for collecting environmental samples.
As shown in fig. 4, the unidirectional air bag pump sampler 312 includes: the air bag pump cavity 3121, the first ball-type check valve 3122 arranged at the bottom of the air bag pump cavity 3121, and the second ball-type check valve 3123 arranged at the top of the air bag pump cavity 3121 are configured to ensure that liquid flows in from the input port of the first ball-type check valve 3122 and flows out from the output port of the second ball-type check valve 3123. So that the liquid flowing into the balloon pump chamber 3121 cannot flow back to the outside from the bottom, and the liquid flowing into the pipe cannot flow back into the balloon pump chamber 3121. The output port of the second ball check valve 3123 is communicated with the input port of the adjustable sampling air pump 33 through a sampling pipe 34.
As shown in fig. 4, the second liquid level monitoring probe 311 is disposed parallel to the unidirectional air bag pump sampler 312, the monitoring depth 9 of the second liquid level monitoring probe 311 is identical to the inlet depth of the unidirectional sampling assembly 31 for obtaining the environmental sample, and the second liquid level monitoring probe 311 is in communication connection with the central control device 1. Optionally, the second liquid level monitoring probe 311 has the same performance parameters as the first liquid level monitoring probe 24, for example, the brand and model of the second liquid level monitoring probe 311 is consistent with those of the first liquid level monitoring probe 24, so that the environmental sample taken by the unidirectional air bag pump sampler 312 and the real-time monitoring data obtained by the monitoring probe assembly 23 are ensured to come from the same monitoring depth 9. Compared with liquid level monitoring probes of different brands and different models, the liquid level monitoring probes of the same brand and the same model have extremely small measurement errors, and the accuracy of sampling is ensured. The second liquid level monitoring probe 311 feeds back the second liquid level data to the central control apparatus 1 in real time so that the central control apparatus 1 generates the second driving instructions of the respective monitoring depths 9 of the sampling driver 32 based on the second liquid level data. In the embodiment of the disclosure, the monitoring depth 9 reached by the target sampling device 3 or the unidirectional sampling assembly 31 is the depth reached by the second liquid level monitoring probe 311 or the input port of the first ball check valve 3122.
The sampling driver 32 is in transmission connection with the unidirectional sampling assembly 31 through a sampling pipeline 34 and is in communication connection with the central control device 1, and is configured to respectively transmit the unidirectional sampling assembly 31 to the corresponding monitoring depth 9 based on a second driving instruction sent by the central control device 1 for each monitoring depth 9. The sampling driver 32 includes a roller controller. The sampling driver 32 controls the unidirectional sampling assembly 31 to lift in the water body environment through a connecting pipeline with the unidirectional sampling assembly 31 until the unidirectional sampling assembly 31 reaches the corresponding monitoring depth 9, so as to realize targeted positioning sampling in the water body environment.
The input of the adjustable sampling air pump 33 is communicated with the output of the second ball check valve 3123 in the unidirectional sampling assembly 31 through a sampling pipe 34, and is in communication connection with the central control device 1, and is configured to collect environmental samples corresponding to the monitoring depths 9 through the unidirectional sampling assembly 31 based on sampling instructions sent by the central control device 1 for each monitoring depth 9. The adjustable sampling air pump provides sampling power for the targeted sampling device 3. For example, the adjustable sampling air pump adopts a large compression ratio with a limit output of 6-10 kg of pressure, so that the unidirectional air bag pump sampler 312 can still sample normally when the monitoring depth is 9-80 m, and the central control device 1 can adjust the power of the adjustable sampling air pump by combining the preset pollutant characteristic information of pollutants (for example, the power range is 0.2-0.5L/min), so that the undisturbed sampling of the water environment is realized, and the damage to the samples of volatile organic compounds in the water environment is reduced. The preset contaminant characteristic information includes flow characteristic information, such as viscosity, of contaminants in the water environment.
The central control device 1 is configured to generate, for each monitoring depth 9, a second driving instruction of the corresponding monitoring depth 9 of the sampling driver 32 based on second liquid level data fed back by the second liquid level monitoring probe 311; and generates a sampling instruction of the adjustable sampling air pump 33 based on preset contaminant characteristic information.
For example, in a water environment, the monitoring well 8 is 20 meters deep from the liquid level to the bottom of the well, the current monitoring depth 9 is 6.5 meters, i.e. the first liquid level data is 6.5 meters, and the target monitoring depth 9 is 8.5 meters; the central control device 1 acquires second liquid level data fed back by the second liquid level monitoring probe 311 in real time in the process of moving the unidirectional air bag pump sampler 312 from the current monitoring depth 9 to the target monitoring depth 9 through the sampling driver 32, when the second liquid level data is inconsistent with the target monitoring depth 9, a second driving instruction reaching the target monitoring depth 9 is generated, the second driving instruction comprises driving direction information of the sampling driver 32, the sampling driver 32 receives the second driving instruction sent by the central control device 1, and controls the unidirectional sampling assembly 31 to ascend and descend, for example, if the second liquid level data is 7 meters and is different from the target monitoring depth 9 by +1.5 meters, the sampling driver 32 controls the unidirectional sampling assembly 31 to descend to 8.5 meters; if the first liquid level data is 9 meters, which is different from the target monitoring depth 9 by-1.5 meters, the sampling driver 32 controls the unidirectional sampling assembly 31 to ascend to 8.5 meters; the central control device 1 obtains an environmental sample of the target monitoring depth 9 through the unidirectional sampling assembly 31. Thus, the central control device 1 is able to sample the water quality at different monitoring depths 9 in the water environment sequentially, for example in ascending or descending order of the monitoring depths 9. Especially for LNAPL floating on the water surface and DNAPL sinking to the water-barrier floor.
The sample monitoring device 4 is communicated with the target sampling device 3 through a pipeline, is configured to collect environmental samples of each monitoring depth 9 through the target sampling device 3, and acquires various sample monitoring data based on each environmental sample. The monitoring types of the plurality of sample monitoring data are the same as the monitoring types of the plurality of real-time monitoring data, and the plurality of sample monitoring data at least comprise second liquid level data and second non-aqueous phase liquid data. For example, the sample monitoring data of each monitoring depth 9 and the real-time monitoring data of the corresponding monitoring depth 9 each include: liquid level data, non-aqueous liquid data, water temperature value, conductivity value, pH value, oxidation-reduction potential value, turbidity value and ammonia nitrogen value corresponding to the monitoring depth 9 and chemical components; the chemical components comprise: benzene series, chemical oxygen demand, total suspended matter, tri-nitrogen and chloride.
In some embodiments, as shown in fig. 2, the sample monitoring apparatus 4 includes a sample collector 41 and a sample monitoring device 42.
The sample collector 41, the input of which communicates with the output of the adjustable sampling air pump 33 via a collection conduit 45, is configured to collect environmental samples for each monitored depth 9, respectively.
In some embodiments, a drain valve 44 is provided at the bottom of the sample collector 41, the drain valve 44 being in communication with the central control device 1 and configured to control the draining or collecting of the environmental sample in the sample collector 41 based on a first open command or a first close command, respectively, of the central control device 1. Whenever the environmental sample needs to be detected, the central control device 1 sends a first closing instruction to the drain valve 44, and closes the drain valve 44 to enable the sample collector 41 to collect the environmental sample; the central control apparatus 1 issues a first opening instruction to the drain valve 44 every time the environmental sample in the sample collector 41 is detected, and the environmental sample in the sample collector 41 is drained through the drain valve 44. The drain valve 44 is then closed again, allowing the sample collector 41 to collect a new environmental sample.
The sample monitoring device 4 further comprises a sample retriever 43, the sample retriever 43 being configured to receive an environmental sample discharged by the sample collector 41. The sample recoverer 43 recovers the environmental sample detected in the sample collector 41, so as to facilitate centralized processing of the environmental sample and avoid environmental pollution caused by random disposal. At the same time, it is ensured that the sample collector 41 is able to collect a new environmental sample for detection.
The sample monitoring device 42, which is communicatively connected to the central control apparatus 1, is configured to: based on the environmental samples at each monitoring depth 9 in the sample collector 41, detection is performed respectively, and various sample monitoring data corresponding to the monitoring depth 9 are acquired. The sample monitoring device 42 transmits various sample monitoring data to the central control apparatus 1, and the central control apparatus 1 analyzes various real-time monitoring data and various sample monitoring data of the same monitoring depth 9.
The central control device 1 is used for controlling functions such as equipment, data analysis, monitoring and early warning and the like. The method can analyze various real-time monitoring data of each monitoring depth 9 and various sample monitoring data corresponding to the monitoring depth 9 to judge whether the monitoring depth 9 and the water body environment corresponding to the monitoring depth 9 are polluted or not, and whether NAPLs exist or not, so that the accuracy of sampling and the early warning effect on the monitoring data are ensured. And instructions are issued to the systems according to the analysis results, so that the normal operation of the systems is ensured. For example, the central control device 1, which is communicatively connected to the real-time monitoring device 2, the target sampling device 3, and the sample monitoring device 4, is configured to: forming a plurality of data pairs corresponding to the monitoring types one by one based on a plurality of real-time monitoring data of each monitoring depth 9 and a plurality of sample monitoring data corresponding to the monitoring depth 9; when the comparison result of two data in any pair meets the preset early warning condition, generating early warning information of the monitoring depth 9 and the monitoring type corresponding to the pair. For example, for a monitoring depth of 98.5 meters, first liquid level data in the plurality of real-time monitoring data and second liquid level data in the plurality of sample monitoring data form a first data pair; forming a second data pair from the first non-aqueous phase liquid data in the plurality of real-time monitoring data and the second non-aqueous phase liquid data in the plurality of sample monitoring data; forming a third data pair by the first water temperature value in the plurality of real-time monitoring data and the second water temperature value in the plurality of sample monitoring data; and so on. For example, the preset pre-warning conditions are: for example, for a monitoring depth of 98.5 meters, if the first liquid level data is 8.6 meters and the second liquid level data is 6 meters, the absolute error= (8.6-7.58)/8.5=12% and the absolute error is greater than 10%, the early warning information of the monitoring depth of 98.5 meters and the liquid level data is generated, and at this time, the monitoring depth of 98.5 meters needs to be resampled. When the same monitoring depth 9 is reached, the first liquid level data and the second liquid level data of the same monitoring depth 9 are ensured to be consistent through the difference analysis between the first liquid level data of the real-time monitoring device 2 and the second liquid level data of the target sampling device 3, so that the accuracy of detection data is ensured.
The central control device 1 is combined with the underground water depth and the corresponding pollutant concentration to simulate the underground water pollution condition, so that a pollutant distribution map of the monitoring well 8 and a pollution distribution map in the whole field water body environment can be generated.
In some embodiments, the system further comprises a cleaning device 5. The cleaning device 5 includes: air supply equipment, liquid supply equipment, a cleaning input pump 55 and a three-way valve 57.
The gas supply apparatus includes a gas container 51 containing a purge gas and a gas valve 52. The gas valve 52 is communicatively connected to the central control device 1, and is configured to control the gas container 51 to discharge or store the purge gas based on a second opening command or a second closing command of the central control device 1, respectively. The air supply device is used for providing an air source for the cleaning system. After the pipeline is cleaned by the cleaning liquid, the gas is pumped into the pipeline by the cleaning input pump 55 to remove the residual liquid in the pipeline to the cleaning liquid recoverer 58, so that the residual liquid in the pipeline is prevented from polluting the sampling pipeline 34, and the detected environmental sample is prevented from being distorted. Since the purge gas has a light specific gravity such as helium, the gas valve 52 is provided at the upper portion of the gas container 51 so that the purge gas can be rapidly discharged.
The liquid supply device comprises a liquid container 53 for containing cleaning liquid and a liquid valve 54; the liquid valve 54 is communicatively connected to the central control device 1, and is configured to control the liquid container 53 to discharge or store the cleaning liquid based on a third opening command or a third closing command of the central control device 1, respectively. The liquid supply device is used for supplying cleaning liquid to the cleaning system. After the monitoring is finished, the cleaning liquid is pumped into the pipeline by the cleaning input pump 55 to clean the pipeline so as to eliminate the residual environmental sample in the pipeline, and prevent the environmental sample from polluting the sampling pipeline 34 and causing environmental sample pollution of the next round of detection. The liquid valve 54 is provided at a lower portion of the liquid container 53 due to a heavy specific gravity of the cleaning liquid so that the cleaning liquid can be rapidly discharged.
The purge pump 55 has an input port connected to the output port of the gas valve 52 and the output port of the liquid valve 54, respectively, and the purge pump 55 is communicatively connected to the central control apparatus 1, and is configured to: based on the start-up instruction of the central control device 1, the cleaning gas in the gas container 51 or the cleaning liquid in the liquid container 53 is pumped out in conjunction with the second opening instruction or the third opening instruction. The purge input pump 55 is used to power the purge system. Since the cleaning liquid is used to clean the pipe and then the cleaning gas is used to clean the pipe, when cleaning, first, the central control device 1 controls the cleaning input pump 55 to be started by the start command, controls the liquid valve 54 to be opened by the third opening command, controls the gas valve 52 to be closed by the second closing command, and cleans the pipe by the cleaning liquid; then, the central control apparatus 1 controls the purge input pump 55 to be started by the start command, controls the gas valve 52 to be opened by the second open command, controls the liquid valve 54 to be closed by the third close command, and purges the pipe by the purge gas; when the pipe is not cleaned, the central control apparatus 1 controls the cleaning input pump 55 to stop operating, and simultaneously, closes the liquid valve 54 and the gas valve 52.
The input port of the three-way valve 57 is communicated with the output port of the adjustable sampling air pump 33 through a collecting pipe 45, the first output port of the three-way valve 57 is communicated with the input port of the sample collector 41, the second output port of the three-way valve 57 is communicated with the input port of the cleaning liquid recoverer 58 through an output pipe 5A, and the three-way valve 57 is configured to: inputting the environmental sample into the sample collector 41 by opening the first output port and closing the second output port based on a fourth opening instruction of the central control apparatus 1; the cleaning liquid or the cleaning gas is discharged into the cleaning liquid recoverer 58 by closing the first output port and opening the second output port based on a fifth opening instruction of the central control apparatus 1. The input port of the cleaning liquid recoverer 58 is arranged at the upper part of the cleaning liquid recoverer 58, which is beneficial to the smooth discharge of the cleaning liquid. The provision of the three-way valve 57 on the sample collector 41 facilitates a more thorough removal of residual liquid from the system.
As shown in fig. 5, the unidirectional sampling assembly 31 further includes a backwashing head 56; the output port of the backwashing head 56 is connected to the lowest point of the unidirectional air bag pump sampler 312 where the environmental sample flows, and the input port of the backwashing head 56 is communicated with the output port of the washing input pump 55 through an input pipe 59, so that the washing gas or the washing liquid pumped by the washing input pump 55 flows into the air bag pump cavity 3121 in one direction. The backwash head 56 prevents ambient sample, cleaning fluid or cleaning gas flowing into the balloon pump cavity 3121 from flowing in the reverse direction into the input conduit 59.
In some embodiments, the present disclosure provides a counter-cleaning head 56 for use with a targeted sampling device 3, comprising a closed barrel 561 and unidirectional flow conduit 562, as shown in fig. 6.
The cylinder 561 includes: a cartridge output port 5611, a purge input port 5612, and a cartridge connecting portion 5613.
The cartridge output port 5611 is formed in the cartridge ceiling wall 5614 and penetrates the cartridge ceiling wall 5614.
The purge inlet 5612 is formed at the lowest point of the inner cylinder wall of the cylinder 561 and penetrates the cylinder wall. For example, the lowest point of the inner cylinder wall of the cylinder 561 includes the lowest point of the cylinder bottom wall 5615 of the inner cylinder wall, or the cylinder side wall intersecting the lowest point of the cylinder bottom wall 5615 of the inner cylinder wall. The cleaning input port 5612 is disposed at the lowest point of the inner cylinder wall, so that the cleaning medium (including cleaning liquid or cleaning gas) introduced by the unidirectional flow guide tube 562 can completely remove the residues (including environmental samples and/or cleaning liquid) in the cylinder 561 from the lowest point of the inner cylinder wall.
The cylinder connecting portion 5613 is disposed at an upper portion of an outer sidewall of the cylinder, and is configured to connect with a lowest point of the target sampling device 3 where the environmental sample flows through the unidirectional air bag pump sampler 312. For example, as shown in fig. 5, the barrel connection 5613 is a threaded interface that is threaded with the lowest point within the unidirectional air bladder pump sampler 312 through which the environmental sample flows; alternatively, the cylinder connecting portion 5613 may be a buckle, and the buckle may be connected to the lowest point buckle, which is not limited thereto. Because the unidirectional air bag pump sampler 312 is the device which is most contacted with the water environment in the targeted sampling device 3, the unidirectional air bag pump sampler 312 is connected with the lowest point through which the environmental sample flows, which is favorable for thoroughly removing the residual environmental sample and cleaning fluid in the system.
The outlet end of the unidirectional flow guide pipe 562 is communicated with the cleaning input port 5612; a one-way check valve 5621 is disposed within the one-way draft tube 562. The one-way check valve 5621 allows one-way flow of the purging medium, including purging liquid or purging gas, within the one-way draft tube 562 to the barrel 561. The one-way check valve 5621 of the presently disclosed embodiments is an automatic valve switch that controls one-way flow of cleaning medium. The one-way check valve 5621 controls both the one-way flow of the purge fluid into the tank 561 and the one-way flow of the purge gas into the tank 561 under the pressure of the purge input pump 55 in the purge device 5. Optionally, the one-way check valve 5621 comprises a one-way diaphragm check valve.
In other embodiments, a sampling portion 5616 is also disposed within the barrel 561. The sampling portion 5616 includes a sampling port formed on a wall of the cylinder and a ball check valve provided on the sampling port for allowing an environmental sample in a water environment to flow into the cylinder 561 in one direction. The sampling portion 5616 can be provided on any cylinder wall, for example, the sampling portion 5616 can be provided on the cylinder top wall 5614, the cylinder bottom wall 5615, or the cylinder side wall.
The present embodiment places the backwash head 56 prior to the collection of the environmental sample by the unidirectional air bag pump sampler 312. When sampling, the water environment flows in from the sampling port of the backwashing head 56 under the action of self pressure, and the ball check valve (the total density of which is slightly higher than that of water) is jacked up into the cylinder 561 of the backwashing head 56. The environmental sample in the barrel 561 of the counter-cleaning head 56 cannot flow out of the sampling port due to the one-way action of the ball check valve; at the same time, the flow cannot be out from the unidirectional flow guide tube 562 due to the unidirectional action of the unidirectional check valve 5621 in the unidirectional flow guide tube 562. The water environment flows from the cartridge outlet 5611 into the unidirectional air bladder pump sampler 312 under its own pressure and the adjustable sampling air pump 33. When the single sampling is completed, the unidirectional sampling assembly 31 and the counter-flushing head 56 are lifted out of the water environment together, and then the system is flushed. The cleaning medium is introduced into the system for cleaning by means of a counter-cleaning head 56 under the influence of a cleaning input pump 55. During sampling and purging, the one-way flow-directing action of the ball check valve and one-way check valve 5621 prevents environmental sample and purging medium flowing into the barrel 561 from flowing out of the purge inlet 5612 and the sampling port. The anti-cleaning head 56 is arranged in front of the unidirectional air bag pump sampler 312, so that the environmental sample collection is not affected, and the residues in the system can be thoroughly removed. The ball check valve in the cylinder 561 and the one-way check valve 5621 in the one-way draft tube 562 are all one-way flow direction effects which can be automatically generated under the action of a specific force field, thereby being beneficial to the automatic cleaning work of a polluted system in the water environment and being beneficial to realizing the automatic sampling and automatic cleaning functions of the water environment.
In other embodiments, the sampling portion 5616 is disposed on the cartridge bottom wall 5615. The cartridge bottom wall 5615 may be flat.
In yet other embodiments, the cartridge bottom wall 5615 includes an integrally formed sump 56151 and sump top land 56152, and the sampling portion 5616 is disposed on the sump top land 56152, as shown in fig. 7. The bottom wall 5615 of the cylinder body is provided with a liquid collecting groove 56151, which is beneficial to collecting and cleaning the residues in the cylinder body 561 into the liquid collecting groove 56151. The sump recess 56151 may be configured as a linear recess, a curvilinear recess, a polygonal recess, and/or a circular recess.
In yet other embodiments, the sump 56151 is configured as an annular groove surrounding the bottom wall of the cartridge, as shown in fig. 8, which is a top view of a circular bottom wall of the cartridge. Of course, the present embodiment is not limited to a circular cartridge bottom wall. For example, the bottom wall of the cartridge is square, and the annular recess is square in configuration. The configuration of the annular recess facilitates rapid sampling of the sampling portion 5616 on the roof deck 56152. Meanwhile, the annular groove is advantageous in collecting the residue because the residue is concentrated on the sidewall inside the cylinder 561.
In other embodiments, the inner annular groove wall 56151a of the annular groove is configured as a ramp structure converging toward the groove top land 56152, as shown in fig. 9. The slope structure is favorable to collecting the residue fast, simultaneously, is favorable to the smooth and easy circulation of cleaning gas, improves abluent efficiency.
In other embodiments, the walls of at least one side of the annular groove are formed with a plurality of wash input ports 5612, and at least one wash input port 5612 is formed at the lowest point of the annular groove. A plurality of cleaning input ports 5612 are provided in the walls of the annular recess to facilitate improved cleaning efficiency.
In other embodiments, the plurality of purge inlets 5612 are uniformly distributed on the outer annular groove wall 56151b of the annular groove, and each purge inlet 5612 is at the lowest point of the annular groove. For example, as shown in fig. 10, there are 8 evenly distributed wash input ports 5612 on the outer annular groove wall 56151b of the annular groove; and each purge inlet 5612 is disposed at the junction with the outer ring groove wall 56151b and the groove bottom. The cleaning gas can be used for cleaning residues from the bottom of the tank.
In other embodiments, the outlet end of the unidirectional draft tube 562 is configured with the outer cylindrical wall of the cylinder 561 as an annular channel 5622, the annular channel 5622 being in communication with the plurality of purge input ports 5612, as shown in fig. 10. In this embodiment, the unidirectional flow guide tube 562 guides the cleaning medium into the cylinder 561 uniformly, so that all directions in the cylinder 561 are cleaned simultaneously, and the cleaning efficiency is improved.
In other embodiments, the input angles of the plurality of purge input ports 5612 are periodically varied from the horizontal. For example, as shown in fig. 10, there are 8 washing input ports 5612 uniformly distributed on the outer ring groove wall 56151b of the annular groove, and in the vertical direction, the input angles of the first washing input port 5612, the third washing input port 5612, the fifth washing input port 5612 and the seventh washing input port 5612 are 0 degrees from the horizontal plane; the input angles of the second, fourth, sixth and eighth wash input ports 5612, 5612 are 30 degrees from the horizontal. The multi-angle cleaning medium entering the barrel 561 can generate multiple impact on the residue on the barrel wall, which is beneficial to cleaning the residue on the barrel wall.
The embodiment of the disclosure provides a backwashing head 56 matched with a target sampling device 3, which is convenient for cleaning equipment in the target sampling device 3 and a sample monitoring device 4, in particular, a ball check valve and a one-way check valve 5621 in the backwashing head 56 have a one-way flow direction control function, and are beneficial to realizing automatic sampling and automatic cleaning functions of a system. And the liquid collecting groove 56151 arranged on the bottom wall 5615 of the cylinder and the multiple cleaning input ports 5612 arranged in the liquid collecting groove 56151 improve the efficiency of cleaning residues.
In some embodiments, the system further comprises a power supply device 6. The power supply device 6 includes: wind power generation equipment, solar power generation equipment, commercial power supply equipment and/or power storage equipment, the power supply device 6 is configured to supply power to the real-time monitoring device 2, the target sampling device 3, the sample monitoring device 4, the central control device 1 and the cleaning device 5 respectively. The wind power generation equipment and the solar power generation equipment are connected with the storage battery through wind-solar complementation, and the commercial power supply equipment is added to supply power to the system, so that a multiple power supply combined mode of solar energy, wind energy and/or commercial power is formed, the problem of difficult power taking and supplying in partial areas is solved, full-automatic and intelligent green power supply of the system is realized, the power demand of normal operation of the device is met, the energy consumption is reduced, and the system is energy-saving and environment-friendly.
In addition, the central control device 1 has a certain control function on the accumulator in the power supply device 6, so as to avoid overcharge and overdischarge of the accumulator and short circuit or open circuit of the circuit.
In some embodiments, the central control device 1 comprises a communication module configured to transmit the real-time monitoring data, the sample monitoring data and/or the pre-warning information obtained by the central control device 1 to a remote terminal. The communication module comprises a wired communication module and/or a wireless communication module. Including but not limited to: the system comprises an infrared communication module, a Bluetooth communication module, a 2G/3G/4G/5G communication module, a WIFI communication module and/or an Ethernet communication module. The central control device 1 uploads the obtained monitoring data to the cloud database for storage and investigation through the communication module. So as to query and analyze the monitoring data in the cloud database in real time by the computer and the intelligent terminal and make business decisions. In addition, the computer and the intelligent terminal can also remotely regulate and control the system according to the monitoring data, and early warning and feedback treatment are carried out on a pollution source at the first time of pollution occurrence, so that the pollution range is prevented from being further enlarged.
In some embodiments, the system further comprises a wellhead protection device 10. The wellhead protection device 10 is used for protecting the monitoring well 8 from external dust and atmospheric precipitation affecting the groundwater in the well. The transmission flexible wires penetrate through the wellhead protection device 10 and are respectively connected with the monitoring driver 22 and the monitoring probe assembly 23; the sampling pipe 34 passes through the wellhead protection device 10 and is connected to the unidirectional sampling assembly 31 and the adjustable sampling air pump 33, respectively.
According to the non-aqueous liquid monitoring system, the real-time monitoring device 2, the targeted sampling device 3, the sample monitoring device 4, the power supply device 6 and the cleaning device 5 are integrated into a whole through the central control device 1, so that an integrated system for dynamic online monitoring and targeted depth-fixing undisturbed automatic sampling and cleaning of the groundwater NAPLs pollutants is formed, the operation is convenient, the sampling accuracy is high, the monitoring result precision is high, the application range is wide, and the system can be widely popularized and applied in groundwater monitoring and early warning and pollution control works in key areas and industrial parks.
The system can dynamically and continuously monitor target pollutants, water level information, conventional water quality information and especially NAPLs substances in different depths in the water environment of high-risk areas such as an industrial park in real time, and complete the monitoring work of the whole water environment in the monitoring well 8, so that the central control device 1 can conveniently perform data analysis and water environment pollution condition simulation.
The monitoring probe assembly 23 in the real-time monitoring device 2 and the unidirectional sampling assembly 31 in the targeted sampling device 3 are both provided with liquid level monitoring probes, so that liquid level data of the monitoring probe assembly 23 and the unidirectional sampling assembly 31 can be reflected in real time. The monitoring probe assembly 23 monitors the water body environment of different monitoring depths 9, and finally, various real-time monitoring data acquired by each monitoring depth 9 are uploaded to the central control device 1. The central control device 1 combines the monitoring data (such as pollution data and pollution depth) of the monitoring depth 9, controls the targeting sampling device 3 to accurately adjust the unidirectional sampling assembly 31 to the corresponding monitoring depth 9, performs depth-fixing undisturbed automatic sampling work, and ensures the accuracy and the effectiveness of environmental samples.
The system is provided with a pipeline automatic cleaning function and a pipeline internal stagnation residual liquid automatic cleaning function. After the monitoring work is finished, the central control device 1 controls the targeted sampling device 3 to be separated from the water surface, the cleaning device 5 starts to work, residual liquid in the sampling pipeline 34 and the collecting pipeline 45 is removed, the influence of the residual liquid in the pipeline on newly collected environmental samples can be effectively reduced, and the corrosion of the residual liquid on equipment is reduced.
The system transmits real-time monitoring data, sample monitoring data and/or early warning information to a remote terminal through a communication module in the central control device 1, uploads the data to a cloud database and a computer smart phone terminal, a user grasps real-time information of the ground water environment through a computer and the smart terminal, and combines the early warning information to remotely regulate and control the system through the computer or the smart terminal, so that a pollution source can be treated in emergency at the first time of pollution occurrence, and the pollution prevention and control range is further enlarged.
In addition, the system forms a multiple power supply combination mode of solar energy, wind energy and/or commercial power, solves the problem of difficult power taking and supplying in partial areas, realizes full-automatic and intelligent green power supplying of the system, meets the power requirement of normal operation of the device, reduces energy consumption, and is energy-saving and environment-friendly.
Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The system or the device disclosed in the embodiments are relatively simple in description, and the relevant points refer to the description of the method section because the system or the device corresponds to the method disclosed in the embodiments.
The above embodiments are merely for illustrating the technical solution of the present disclosure, and are not limiting thereof; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (7)
1. A counter-cleaning head for use with a targeted sampling device, comprising:
a closed cartridge comprising: a barrel output port, a cleaning input port and a barrel connecting part; the cylinder output port is formed on the top wall of the cylinder; the cleaning input port is formed at the lowest point of the inner cylinder wall of the cylinder body; the cylinder connecting part is arranged at the upper part of the outer side wall of the cylinder and is used for being connected with the lowest point of the unidirectional air bag pump sampler in the target sampling device, through which the environmental sample flows;
the outlet end of the one-way flow guide pipe is communicated with the cleaning input port, a one-way check valve is arranged in the one-way flow guide pipe, the one-way check valve enables cleaning medium in the one-way flow guide pipe to flow into the cylinder body in one direction, and the cleaning medium comprises cleaning liquid or cleaning gas;
wherein the bottom wall of the cylinder body comprises a liquid collecting groove which is configured as an annular groove, and the annular groove surrounds the bottom wall of the cylinder body; the groove wall of at least one side of the annular groove is formed with a plurality of cleaning input ports; the plurality of cleaning input ports are uniformly distributed on the outer ring groove wall of the annular groove, and each cleaning input port is positioned at the lowest point of the annular groove; the outlet end of the unidirectional flow guide pipe and the outer cylinder wall of the cylinder body are constructed into an annular channel, and the annular channel is communicated with the cleaning input ports.
2. The anti-rinse head of claim 1 wherein the one-way check valve comprises a one-way diaphragm check valve.
3. The counter-cleaning head according to claim 1, wherein a sampling portion is further provided in the barrel;
the sampling part comprises a sampling port formed on the wall of the cylinder body and a ball check valve arranged on the sampling port and used for enabling an environmental sample in the water body environment to flow into the cylinder body in one way.
4. A counter-cleaning head according to claim 3, wherein the sampling portion is provided in the bottom wall of the cartridge.
5. The counter-cleaning head of claim 4, wherein the cartridge bottom wall includes a sump top land integrally formed with the sump, the sampling portion being disposed on the sump top land.
6. The counter-cleaning head of claim 5, wherein the inner annular groove walls of the annular groove are configured as a ramp structure converging toward the groove top land.
7. The anti-rinse head of claim 1 wherein the angle of the input of the plurality of rinse input ports varies periodically with respect to horizontal.
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