CN112255050A - A sampling device for water quality testing - Google Patents
A sampling device for water quality testing Download PDFInfo
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- CN112255050A CN112255050A CN202011328101.3A CN202011328101A CN112255050A CN 112255050 A CN112255050 A CN 112255050A CN 202011328101 A CN202011328101 A CN 202011328101A CN 112255050 A CN112255050 A CN 112255050A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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- Hydrology & Water Resources (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sampling device for water quality detection, which comprises a sampling mechanism, a counterweight mechanism connected to the sampling mechanism through a readily separable component, a first recovery air bag arranged on the sampling mechanism, a water depth sensor and a control terminal, wherein the first recovery air bag is connected with the sampling mechanism through a readily separable component; the control terminal is in communication connection with the easy separation component, the water depth sensor and the first recovery air bag respectively, the control terminal measures the depth according to the water depth sensor, operates the easy separation component to separate the counterweight mechanism and the sampling mechanism at a preset water depth, and excites the first recovery air bag to bring the sampling mechanism to the water surface after the sampling mechanism obtains a water sample. The sampling device can independently complete submergence, sampling and floating recovery, and saves the cost and time for configuring a platform on the water surface and matching auxiliary equipment. Particularly, the counterweight mechanism can also be recycled, so that resource waste and environmental pollution are avoided, and the counterweight mechanism can be repeatedly utilized to save cost.
Description
Technical Field
The invention belongs to the technical field of environmental detection, and particularly relates to a sampling device for water quality detection.
Background
The water quality detection is to analyze the components of the extracted water sample so as to determine the pollution degree and the pollution category of the area where the water sample is located, thereby facilitating the subsequent treatment work.
When samples in different water areas are extracted, different sampling schemes need to be adapted, for example, narrow streams in the drainage basin only need to be sampled on the water surface at the same sampling point. In water areas such as deep ponds, lakes, large rivers and the like, the water depth is deep, and the water samples at different depths are different greatly, so that multiple sampling at different depths needs to be carried out at the same sampling point.
The existing deepwater sampling equipment is connected by a cable and is lowered to a deepwater area for sampling. The cable is used as a data line for transmitting signals, so that a detector can remotely control the deepwater sampler to perform sampling action in a deepwater area above the water surface, and is also used as a traction rope for recovering the deepwater sampler. The existing deepwater sampler has the problems that auxiliary equipment such as cables, equipment for winding and unwinding the cables, remote control equipment and the like cannot be separated, and the auxiliary equipment occupies a large space, so that a special ship needs to be configured as a water surface platform when deepwater sampling is carried out, and the sampling cost of a deepwater area is extremely high.
In summary, there is a need for a deep water sampling decoration that can independently complete deep water sampling and automatically float out of the water surface, and save the cost and time for configuring a platform on the water surface and matching with auxiliary equipment.
Disclosure of Invention
The invention aims to provide a sampling device for water quality detection, which can be thrown on the water surface of a detection point, is sunk to a deep water area, performs sampling and floats to the water surface after reaching a preset depth, and can be directly salvaged and recovered by detection personnel.
The invention is realized by the following technical scheme:
a sampling device for water quality detection comprises a sampling mechanism, a counterweight mechanism connected to the sampling mechanism through a readily separable assembly, a first recovery air bag arranged on the sampling mechanism, a water depth sensor and a control terminal; the control terminal is in communication connection with the easy separation component, the water depth sensor and the first recovery air bag respectively, the control terminal measures the depth according to the water depth sensor, operates the easy separation component to separate the counterweight mechanism and the sampling mechanism at a preset water depth, and excites the first recovery air bag to bring the sampling mechanism to the water surface after the sampling mechanism obtains a water sample.
Through the scheme, the invention at least obtains the following technical effects:
the sampling device is used for sampling in a deep water area, the sampling depth is set at the control terminal in advance, after the sampling device is put into water, the three steps of submerging, sampling and floating can be independently completed by the sampling device, and a detector only needs to wait for recovering the sampling device which floats out of the water surface and carries a deep water sample.
The specific sampling process is as follows: wholly drop into aquatic after assembling sampling device, the biggest below of weighing weight mechanism's self weight makes sampling device vertically sink to the deep water region, and depth of water sensor continuously detects the depth of water and passes back the degree of depth data to control terminal. When the device reaches a set depth, the control terminal operates the easy-separation assembly to separate the counterweight mechanism from the sampling mechanism, the counterweight mechanism continuously sinks, the sampling mechanism obtains a water sample in the area, the control terminal operates the first recovery air bag to inflate and expand the volume to increase buoyancy, and the sampling mechanism is dragged to float upwards until the water surface is recovered by a detected person.
Preferably, the sampling mechanism comprises a shell and a liner; one end of the shell is provided with an opening communicated with the inner cavity, the opening is connected with the counterweight mechanism through the easy-to-separate component, the inner container is detachably embedded in the inner cavity of the shell, and the surface of the inner container, which is positioned in the opening range of the shell, is provided with a one-way water inlet valve.
Preferably, the shell is provided with an exhaust hole, and a one-way exhaust valve is arranged in the exhaust hole; the inner container is provided with a convex exhaust pipe, and the exhaust pipe is communicated with the exhaust hole.
Preferably, the side wall of the liner provided with the one-way water inlet valve is an elastic wall.
Preferably, the easily separable assembly comprises a lock catch arranged on the shell and a lock bolt arranged on the counterweight mechanism, and the lock bolt and the lock catch are controlled to be locked or unlocked by the control terminal.
Preferably, the counterweight mechanism comprises a fairing, a weight pressing body and a second recovery air bag; the ballast body is arranged in the fairing, and the second recovery air bag is embedded in a groove formed in the ballast body.
Preferably, the fairing is connected with the shell to form a streamline structure.
Preferably, the first recovery air bag and the second recovery air bag have the same structure; both include utricule, solid gasification reactant and igniter, solid gasification reactant fills in the utricule, the igniter sets up with solid gasification reactant contact.
Preferably, the outer wall of the shell is symmetrically provided with stabilizing fins.
Preferably, the one-way water inlet valve comprises a water inlet hole formed in the wall of the inner container and an elastic cover covering an orifice at one side of the water inlet hole in the inner cavity of the inner container; one end of the elastic cover is fixed on the inner wall of the inner container.
The invention has the beneficial effects that:
the sampling device can independently complete submergence, sampling and floating recovery, and saves the cost and time for configuring a platform on the water surface and matching auxiliary equipment. Particularly, the counterweight mechanism can also be recycled, so that resource waste and environmental pollution are avoided, and the counterweight mechanism can be repeatedly utilized to save cost.
Drawings
Fig. 1 is an assembled overall sectional structure diagram of a sampling device for water quality detection according to an embodiment of the present invention.
Fig. 2 is a schematic view illustrating a recovery state of the sampling device according to an embodiment of the present invention.
Fig. 3 is a schematic view illustrating a recovery state of the counterweight mechanism according to an embodiment of the present invention.
FIG. 4 is a partial enlarged structural view of a single inlet valve according to an embodiment of the present invention.
Legend:
1, a sampling mechanism; 2, a counterweight mechanism; 3, easily separating components; 4 a water depth sensor; 5, controlling the terminal; 6 stabilizing the fin;
11 a first recovery air bag; 12 a housing; 13 an inner container;
21 a cowling; 22 weight body; 23 a second recovery bladder;
31, locking and buckling; 32 a latch bolt;
111 a capsule body; 112 solid gasification reactants; 113 an igniter;
121 exhaust holes; 122 one-way exhaust valve;
131 one-way water inlet valve; 132 an exhaust pipe; 133 water inlet holes; 134 resilient cover.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example 1:
as shown in fig. 1, the present embodiment provides a sampling device for water quality detection, which includes a counterweight mechanism 2, a sampling mechanism 1, and a first recovery air bag 11, which are sequentially arranged from bottom to top; the sampling mechanism 1 is also provided with a control terminal 5 and a water depth sensor 4.
As shown in fig. 1 and fig. 2, the outer layer of the sampling mechanism 1 is provided with a housing 12, the outer layer of the counterweight mechanism 2 is provided with a fairing 21, the housing 12 is hollow and provided with an opening at the butt end, the fairing 21 is also hollow inside and forms an opening at the butt end, and the two are connected through the easy separation component 3 to form a streamline appearance shape, such as a shuttle shape, a cone shape, a cylinder shape and the like. The shuttle type is preferred in this embodiment, can reduce the resistance, accelerates dive speed, also can reduce this sampling device simultaneously and rock in aqueous, increase stability.
To further increase stability, stabilizing fins 6 are symmetrically disposed on the outer wall of the housing 12 to prevent the sampler from rotating in the water.
As shown in fig. 1, 2 and 3, the frangible separation assembly 3 in this embodiment includes a lock 31 mounted on the inner wall of the housing 12 and a lock 32 mounted on the inner wall of the fairing 21; wherein, an electromagnet is arranged in the lock catch 31, and the lock bolt 32 is inserted into the lock catch 31 along the common axial direction of the shell 12 and the fairing 21. The control terminal 5 controls the electrification and the outage of the electromagnet, the electromagnet generates magnetism when being electrified, the adsorption lock bolt 32 generates a locking effect, and the balance weight mechanism 2 is connected with the sampling mechanism 1. The electromagnet loses magnetism when the power is cut off, and the lock bolt 32 is not restrained to be in an unlocking state.
In consideration of the fact that the acting force between the counterweight mechanism 2 and the sampling mechanism 1 is large in the scheme, a limiting protrusion can be added on the side wall of the lock bolt 32, the joint of the lock bolt 32 and the inner wall of the fairing 21 is made of elastic materials, and a limiting groove is formed in the lock catch 31. When the electromagnet generates magnetism, the elastic material part of the lock bolt 32 is elastically deformed due to the adsorption force, and the limiting bulge on the lock bolt 32 is sucked into the limiting groove; when the magnetism of the electromagnet disappears, the lock bolt 32 restores the shape, and the limiting bulge is separated from the limiting groove, so that the fairing 21 is separated from the shell 12.
As shown in fig. 1 and 3, the weight 22 is provided in the fairing 21 of the counterweight mechanism 2, and the effect of sinking into deep water is achieved by increasing the overall weight of the sampling device by means of the high density and high quality of the weight 22. The purpose of separating the counterweight mechanism 2 from the sampling mechanism 1 is only to reduce the total weight of the sampling mechanism 1 during recovery, reduce the drainage requirement of the first recovery air bag 11 and increase the floating speed.
After the fairing 21 is separated from the shell 12, the opening of the inner cavity of the shell 12 is exposed, and the inner container 13 detachably arranged in the inner cavity of the shell 12 can finish the deepwater sampling work. The inner container 13 is cylindrical and extends into the casing 12 from the opening of the casing 12, and the inner container 13 and the casing 12 can be connected through magnetic attraction or can be fixed through threaded connection. One side wall of the inner container 13 facing the opening of the shell 12 is provided with a one-way water inlet valve 131, and the one-way water inlet valve 131 is pushed open by water pressure in a deep water area to flow into a storage cavity of the inner container 13.
As shown in fig. 1 and 2, since the inner container 13 is not vacuumized and gas is retained in the inner cavity, an exhaust structure is further provided. The exhaust structure is composed of an exhaust pipe 132 installed on the inner container 13, an exhaust hole 121 opened on the casing 12 to communicate the inner cavity of the casing 12 with the outside, and a one-way exhaust valve 122 embedded in the exhaust hole 121. When the inner container 13 is inserted into the inner cavity of the case 12, the exhaust pipe 132 is connected to the exhaust hole 121. Along with the water flowing from the one-way water inlet valve 131 of the inner container 13, the gas in the inner container 13 is squeezed into the gas outlet pipe 132 and is exhausted out of the sampling mechanism 1 through the one-way gas outlet valve 122 and the gas outlet hole 121, so that the water sampling capacity of the inner container 13 is increased.
As shown in fig. 1 and 2, in order to further enhance the effect of the inner container 13 for extracting water sample in deep water high pressure environment, the side wall provided with the one-way water inlet valve 131 is modified into an elastic wall which can be concave or convex with the change of the internal and external pressure of the inner container 13. When the inner container 13 is a cavity, the deep water high pressure pushes the elastic wall to be concave, which is beneficial to discharging the gas of the inner container 13 and is also beneficial to the inward opening of the one-way water inlet valve 131. When the inner container 13 is filled with water samples, the internal pressure and the external pressure of the inner container 13 are balanced, and the pressure in the inner container 13 is equal to the pressure in a deep water area. The first recovery air bag 11 pulls the sampling mechanism 1 to float upwards, the external water pressure is reduced when the depth is reduced, the pressure in the inner container 13 is greater than the external water pressure, the one-way water inlet valve 131 is closed, the elastic wall can be outwards protruded along with the change of the internal pressure and the external pressure, the space of the inner container 13 is enlarged, the inner container 13 is prevented from being damaged due to high pressure, and meanwhile, the outwards protruded shape is also beneficial to enhancing the sealing effect of the one-way water inlet valve 131.
As shown in fig. 4, the one-way water inlet valve 131 in this embodiment is configured by covering a water inlet on one side of the inner cavity of the inner container 13 with an elastic cover 134. During sampling, the deep water high pressure environment outside the inner container 13 enables the water flow to push the elastic cover 134 open to flush into the inner cavity of the inner container 13. In the floating process, the pressure intensity of the inner cavity of the inner container 13 is larger than that of the outside, and the elastic cover 134 is tightly attached to the water inlet to form a sealing effect. If the manufacturing cost is not considered, a solenoid valve can be used instead, and the switch state of the solenoid valve is controlled by the control terminal 5. The one-way exhaust valve 122 in this embodiment may also be a solenoid valve and operated by the control terminal 5. The preset execution steps in the control terminal 5 are that after the preset water depth is reached, the counterweight mechanism 2 is separated from the sampling mechanism 1, the one-way exhaust valve 122 and the one-way water inlet valve 131 are opened for time-limited sampling, after the limited time is reached, the two valves are closed, the first recovery air bag 11 is excited and expanded, and the sampling mechanism 1 floats upwards for recovery.
As shown in fig. 2, the first recycling air bag 11 of the present embodiment has the same structure as an automobile air bag, and includes an outer bag body 111, a solid gasification reactant 112 filled in the bag body 111, and an igniter 113 contacting the solid gasification reactant 112. The ignition timing of the igniter 113 is controlled by the control terminal 5. When the sampling is finished and the preparation recovery is carried out, the igniter 113 is ignited, the solid gasification reactant 112 is forced to harden to generate a large amount of gas, the capsule body 111 is filled rapidly and the capsule body 111 is expanded, the volume and the water discharge are increased, and according to the buoyancy calculation formula: fFloating body＝GRow board＝ρgVRow board(ii) a It can be seen that the displacement increased by the expansion of the capsule 111 can greatly increase the buoyancy force on the premise that the gravity is not changed, so that the sampling mechanism 1 floats upwards. Wherein the solid gasification reactant 112 is sodium azide, and the reaction formula is as follows: 2NaN3＝2Na+3N2↑。
As shown in FIG. 3, to avoid waste, a second recovery bladder 23 is added to the weight mechanism 2 so that it can be separately recovered and reused with the sampling mechanism 1 after being separated from the sampling mechanism 1. The second recovery air bag 23 is disposed in a recess 24 opened in the weight body 22 and facing the opening of the cowl 21. The structure of the second recovery air bag 23 is completely the same as that of the first recovery air bag 11, after the counterweight mechanism 2 is separated from the sampling mechanism 1, an independent single chip microcomputer can be adopted to control the igniter 113 of the second recovery air bag 23 to ignite, so that the bag body 111 of the second recovery air bag 23 is expanded, and the counterweight mechanism 2 is dragged back to the water surface for recovery. Or a sensor can be used to monitor the locking/unlocking state of the frangible separation assembly 3 to obtain a signal and control the igniter 113.
Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in the combination between the features, but is limited to the space and is not described one by one.
The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. A sampling device for water quality testing which characterized in that: the system comprises a sampling mechanism, a counterweight mechanism connected to the sampling mechanism through a readily separable component, a first recovery air bag arranged on the sampling mechanism, a water depth sensor and a control terminal; the control terminal is in communication connection with the easy separation component, the water depth sensor and the first recovery air bag respectively, the control terminal measures the depth according to the water depth sensor, operates the easy separation component to separate the counterweight mechanism and the sampling mechanism at a preset water depth, and excites the first recovery air bag to bring the sampling mechanism to the water surface after the sampling mechanism obtains a water sample.
2. The sampling device for water quality detection according to claim 1, wherein the sampling mechanism comprises a housing and a liner; one end of the shell is provided with an opening communicated with the inner cavity, the opening is connected with the counterweight mechanism through the easy-to-separate component, the inner container is detachably embedded in the inner cavity of the shell, and the surface of the inner container, which is positioned in the opening range of the shell, is provided with a one-way water inlet valve.
3. The sampling device for water quality detection according to claim 2, wherein the housing is provided with an exhaust hole and a one-way exhaust valve is arranged in the exhaust hole; the inner container is provided with a convex exhaust pipe, and the exhaust pipe is communicated with the exhaust hole.
4. The sampling device for water quality detection according to claim 2, wherein the side wall of the inner container provided with the one-way water inlet valve is an elastic wall.
5. The sampling device for water quality detection according to claim 1, wherein the easily separable assembly comprises a lock catch arranged on the housing and a lock bolt arranged on the counterweight mechanism, and the lock bolt and the lock catch are controlled to be locked or unlocked by the control terminal.
6. The sampling device for water quality detection according to claim 2, wherein the counterweight mechanism comprises a fairing, a ballast body and a second recovery air bag; the ballast body is arranged in the fairing, and the second recovery air bag is embedded in a groove formed in the ballast body.
7. The sampling device for water quality detection according to claim 6, wherein the fairing is connected with the shell to form a streamline structure.
8. The sampling device for water quality detection according to claim 6, wherein the first recovery air bag and the second recovery air bag have the same structure; both comprise a capsule body, a solid gasification reactant and an igniter, wherein the solid gasification reactant is filled in the capsule body, and the igniter is in contact with the solid gasification reactant to arrange the solid gasification reactant.
9. The sampling device for water quality detection according to claim 2, wherein the outer wall of the housing is symmetrically provided with stabilizing fins.
10. The sampling device for water quality detection according to claim 2, wherein the one-way water inlet valve comprises a water inlet hole formed in the wall of the inner container and an elastic cover covering an opening of the water inlet hole at one side in the inner cavity of the inner container; one end of the elastic cover is fixed on the inner wall of the inner container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328101.3A CN112255050A (en) | 2020-11-24 | 2020-11-24 | A sampling device for water quality testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328101.3A CN112255050A (en) | 2020-11-24 | 2020-11-24 | A sampling device for water quality testing |
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| Publication Number | Publication Date |
|---|---|
| CN112255050A true CN112255050A (en) | 2021-01-22 |
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ID=74225073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011328101.3A Withdrawn CN112255050A (en) | 2020-11-24 | 2020-11-24 | A sampling device for water quality testing |
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| Country | Link |
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| CN (1) | CN112255050A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447317A (en) * | 2021-08-05 | 2021-09-28 | 广州海洋地质调查局 | Seawater sampler |
| CN113514275A (en) * | 2021-07-07 | 2021-10-19 | 广东海洋大学 | Marine sampling device convenient to location is seeked |
| CN113959787A (en) * | 2021-11-24 | 2022-01-21 | 自然资源部第二海洋研究所 | Sampling device and sampling method for ocean deepwater drilling |
| CN114200096A (en) * | 2021-11-15 | 2022-03-18 | 佛山市南海区苏科大环境研究院 | Water body pollution assessment device |
| CN116148428A (en) * | 2022-10-13 | 2023-05-23 | 甘肃省水文站 | Water environment monitoring device |
| KR102553691B1 (en) * | 2022-11-30 | 2023-07-10 | 유동규 | Automatic water sampler |
-
2020
- 2020-11-24 CN CN202011328101.3A patent/CN112255050A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514275A (en) * | 2021-07-07 | 2021-10-19 | 广东海洋大学 | Marine sampling device convenient to location is seeked |
| CN113514275B (en) * | 2021-07-07 | 2023-03-10 | 广东海洋大学 | Marine sampling device convenient to location is seeked |
| CN113447317A (en) * | 2021-08-05 | 2021-09-28 | 广州海洋地质调查局 | Seawater sampler |
| CN113447317B (en) * | 2021-08-05 | 2022-03-18 | 南方海洋科学与工程广东省实验室(广州) | Seawater sampler |
| CN114200096A (en) * | 2021-11-15 | 2022-03-18 | 佛山市南海区苏科大环境研究院 | Water body pollution assessment device |
| CN113959787A (en) * | 2021-11-24 | 2022-01-21 | 自然资源部第二海洋研究所 | Sampling device and sampling method for ocean deepwater drilling |
| CN113959787B (en) * | 2021-11-24 | 2024-05-24 | 自然资源部第二海洋研究所 | Ocean deepwater drilling sampling equipment and sampling method |
| CN116148428A (en) * | 2022-10-13 | 2023-05-23 | 甘肃省水文站 | Water environment monitoring device |
| KR102553691B1 (en) * | 2022-11-30 | 2023-07-10 | 유동규 | Automatic water sampler |
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Application publication date: 20210122 |
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