CN212059482U - Detachable monitoring well groundwater heavy metal sample depthkeeping sampling device - Google Patents
Detachable monitoring well groundwater heavy metal sample depthkeeping sampling device Download PDFInfo
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- CN212059482U CN212059482U CN202020638437.9U CN202020638437U CN212059482U CN 212059482 U CN212059482 U CN 212059482U CN 202020638437 U CN202020638437 U CN 202020638437U CN 212059482 U CN212059482 U CN 212059482U
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- heavy metal
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- 238000005070 sampling Methods 0.000 title claims abstract description 68
- 238000012544 monitoring process Methods 0.000 title claims abstract description 46
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 32
- 239000003673 groundwater Substances 0.000 title abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 235000006506 Brasenia schreberi Nutrition 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a detachable monitoring well groundwater heavy metal sample depthkeeping sampling device, among the device: the lifting fixed handle is of a telescopic structure with a hollow interior; the top end of the lifting connecting support is connected with the lifting fixing handle, and the bottom end of the lifting connecting support is connected with the top end of the sampling bottle fixing structure; the water inlet and outlet valve part is arranged in the lifting fixing part, the bottom of the lifting connecting bracket is provided with a valve fixing surface, and the valve fixing block is arranged at the center of the valve fixing surface; the top end of the spring is connected with the valve fixing block, and the bottom end of the spring is connected with the top end of the valve movable cover; the valve movable cover is covered at the bottle mouth of the sample collection bottle through the pressure of the spring; the top end of the water valve switch wire is arranged outside the lifting fixed handle, and the bottom end of the water valve switch wire penetrates through the inside of the valve fixed block to be connected with the valve movable cover. The utility model discloses the appointed degree of depth sample collection can be realized to easy dismouting, and the volume can be adjusted according to monitoring well structure and required sample size, the collection of groundwater heavy metal sample in the easily open-air monitoring well.
Description
Technical Field
The utility model relates to an environmental monitoring technique and monitoring well groundwater sample collection technical field especially relate to a detachable monitoring well groundwater heavy metal sample depthkeeping sampling device.
Background
Underground water is an indispensable material basis in sustainable development of economic society in China, and the demand of underground water resources is increasing along with rapid growth of population and rapid development of economy in China. Although the amount of underground water resources accounts for one third of the total amount of water resources in China, the underground water resources are deeply buried underground, the mining cost is high, the underground water with the actual water supply significance is often shallow-layer underground water, and the underground water amount of the part is small and is easily polluted by people. The underground water pollution in China generally shows the expansion trend from point to surface, from shallow to deep and from cities to rural areas, and the degree is increasingly serious. The monitoring results of 195 cities in China show that 97% of urban groundwater is polluted to different degrees, and 40% of urban groundwater is polluted to a greater extent. In the construction of "nineteen big" ecological civilization, countries and governments have also specifically pointed out that the strengthening of comprehensive control of groundwater pollution means that sample collection for groundwater is indispensable.
At present, no depth-fixed sampler aiming at underground water heavy metal samples of a monitoring well exists, more than all universal underground water sample samplers exist, and the defects are that: 1. the lifting line and the valve switch line are easy to knot in the process of lifting and lowering the device, so that the valve is opened by mistake or cannot be closed, and sampling at a fixed depth cannot be accurately performed; 2. the sampler is only a water sample collecting device, and the sample is transferred into a sample storage bottle after being collected, so that sampling interference between the sample and the sample cannot be avoided, and the sampler cannot be replaced at any time according to the requirement of the sample amount; 3. the application of an electronic valve or an electronic lifting device increases the possibility of complexity and damage of the sample collection step; 4. in order to obtain larger weight, the sampler sinks, the sampler is usually made of metal materials as a whole, and deviation and the like are caused to the accuracy of analysis of heavy metal underground water samples.
The underground water heavy metal sample depth-fixing sampling device is simple to operate, easy to disassemble and assemble, convenient to maintain, good in sealing performance, capable of achieving sample collection at a specified depth, suitable for monitoring wells of various specifications in the field, capable of adjusting the volume according to the structures of the monitoring wells and the required sample amount, capable of enabling the underground water heavy metal sample collection to be simple and easy to operate, capable of avoiding data deviation caused by the sampling process, capable of improving the testing accuracy of the underground water heavy metal sample, and capable of providing high-quality sample collection support for prevention and control of underground water pollution in China.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lifting line and a valve switch line are easy to be knotted in the process of collecting underground water heavy metal samples of a monitoring well, so that a water inlet and outlet valve is opened by mistake or cannot be closed; the collector only plays a collecting function, and the problem of sampling interference between sample collection is not considered; the sampler cannot be replaced according to the sampling amount and the monitoring well result; the adoption of too many electronic systems leads to complicated sampling steps and higher possibility of damage; the interference of the metal structure of the sampler on the determination of the heavy metal elements in the groundwater sample is not considered. To being suitable for each open-air specification monitoring well, can carrying out the volume adjustment according to monitoring well structure and required sample size, easy operation, easily dismouting, the maintenance of being convenient for, the seal is good, realizes appointed degree of depth sample collection, avoids the heavy metal survey deviation brought by the sampling process a detachable monitoring well groundwater heavy metal sample depthkeeping sampling device.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a detachable monitoring well groundwater heavy metal sample depthkeeping sampling device, which comprises a detachable lifting fixing part, a water inlet and outlet valve part, a sample collecting bottle and a conical counterweight; wherein:
the lifting fixing part comprises a lifting fixing handle, a sampling bottle fixing structure and a lifting connecting bracket; the lifting fixed handle is of a telescopic structure with a hollow interior; the top end of the lifting connecting support is connected with the lifting fixing handle, and the bottom end of the lifting connecting support is connected with the top end of the sampling bottle fixing structure; the bottom end of the sampling bottle fixing structure is provided with an opening, and the opening is provided with a thread and is detachably connected with the bottle opening of the sample collection bottle through the thread; the bottom end of the sample collection bottle is provided with a thread, and the sample collection bottle is detachably connected with the conical balance weight through the thread;
the water inlet and outlet valve part is arranged in the lifting fixing part and comprises a water valve switch wire, a valve fixing block, a spring and a valve movable cover; the bottom of the lifting connecting support is provided with a valve fixing surface, and the valve fixing block is arranged in the center of the valve fixing surface; the top end of the spring is connected with the valve fixing block, and the bottom end of the spring is connected with the top end of the valve movable cover; the valve movable cover is covered at the bottle mouth of the sample collection bottle through the pressure of the spring; the top end of the water valve switch wire penetrates through the hollow inside of the lifting fixed handle and is arranged outside the lifting fixed handle, the bottom end of the water valve switch wire penetrates through the inside of the valve fixed block and is connected with the valve movable cover, the water valve switch wire outside the lifting fixed handle is pulled to open the valve movable cover, and the water to be collected flows into the sample collecting bottle.
Further, the utility model discloses a lifting fixed handle top is installed the spooler of taking locking function, and water valve switch line passes among the hollow lifting fixed handle, and its end stretches out lifting fixed handle duplex winding and adorns on the spooler.
Further, the utility model discloses a promote fixed handle and be multistage extending structure, promote the last length scale that is provided with of fixed handle.
Further, the utility model discloses a valve movable cover bottom central point puts and is provided with the sealed lid of ball-type, and the sealed lid of ball-type is provided with the round sealing washer all around, and when the spring compressed tightly the valve movable cover, the sealed bottleneck interference fit of lid and sample collection bottle of ball-type realized the sealed to the bottleneck.
Further, the utility model discloses a sample collection bottle is the PVC material.
Further, the utility model discloses a top bottleneck prominence of sample collection bottle is provided with the pin thread, is connected through the box screw-thread fit of pin thread and sampling bottle fixed knot structure bottom.
Further, the utility model discloses a top middle part groove department of sample collection bottle is provided with female screw, is connected through the pin thread fit at female screw and toper counter weight top.
Further, the utility model discloses a material that promotes fixed handle, sampling bottle fixed knot to construct and promote linking bridge adopts the alloy material.
The utility model discloses the beneficial effect who produces is: the utility model discloses a detachable monitoring well groundwater heavy metal sample depthkeeping sampling device, PVC sample collection bottle upper end is connected with sampling bottle fixed phase with the helicitic texture, can carry out volume control according to monitoring well structure and required sample volume, change suitable PVC sample collection bottle, be suitable for each specification monitoring well in the field, and PVC sample collection bottle lower extreme middle part is female screw, on the one hand with threaded connection lower extreme counter weight, convenient dismantlement; on the other hand, the storage and transportation device can be placed vertically in the storage and transportation process, so that the storage and transportation space is saved. Meanwhile, a water valve switch wire of the device passes through the middle of the lifting fixing handle, so that accurate opening and closing and effective sealing of the valve are guaranteed, the handle is carved with a length scale, the lifting fixing handle is made of high-strength alloy materials, mutual interference between the lifting wire and the valve is further guaranteed, the device is not influenced by water pressure and the weight of the sampler and is stretched, and the sampling depth of the device is convenient to know. Moreover, the valve with the spring is utilized to achieve the non-return effect, and the device can be opened and closed at the specified depth. In addition, the sampling bottle fixing body, the lifting wire connecting support, the valve fixing structure and the conical counterweight part are made of alloy materials for achieving the weight increasing purpose, but one layer of PVC sleeve needs to be wrapped outside the structure for reducing heavy metal pollution, and besides, other structures of the device are made of PVC materials.
In a word, this device easy operation, easily dismouting, the maintenance of being convenient for, the seal is good, realizes appointed degree of depth sample collection, is suitable for each open-air specification monitoring well, can carry out the volume adjustment according to monitoring well structure and required sample size, can make groundwater heavy metal sample collection more simple and easy, avoids the data deviation who brings by the sampling process, improves groundwater heavy metal sample test accuracy.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a fixing structure of a sampling bottle according to an embodiment of the present invention;
in the figure: 1-lifting a fixed handle, 2-a sampling bottle fixed structure, 3-a lifting connecting support, 4-a valve fixed surface, 5-a water valve switch line, 6-a valve fixed block, 7-a spring, 8-a sample collecting bottle, 9-a conical balance weight, 10-a valve movable cover, 11-a sealing ring, 12-a spherical sealing cover and 13-a bobbin winder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the depth-fixed sampling device for groundwater heavy metal samples of the detachable monitoring well of the embodiment of the invention comprises a detachable lifting fixing part, a water inlet and outlet valve part, a sample collecting bottle 8 and a conical counterweight 9; wherein:
the lifting fixing part comprises a lifting fixing handle 1, a sampling bottle fixing structure 2 and a lifting connecting bracket 3; the lifting fixed handle 1 is of a telescopic structure with a hollow interior; the top end of the lifting connecting bracket 3 is connected with the lifting fixing handle 1, and the bottom end of the lifting connecting bracket is connected with the top end of the sampling bottle fixing structure 2; the bottom end of the sampling bottle fixing structure 2 is provided with an opening, a thread is arranged at the opening, and the sampling bottle fixing structure is detachably connected with the bottle opening of the sample collecting bottle 8 through the thread; the bottom end of the sample collection bottle 8 is provided with a thread which is detachably connected with the conical balance weight 9;
the water inlet and outlet valve part is arranged in the lifting fixing part and comprises a water valve switch wire 5, a valve fixing block 6, a spring 7 and a valve movable cover 10; wherein, the bottom of the lifting connecting bracket 3 is provided with a valve fixing surface 4, and a valve fixing block 6 is arranged at the central position of the valve fixing surface 4; the top end of the spring 7 is connected with the valve fixing block 6, and the bottom end of the spring is connected with the top end of the valve movable cover 10; the valve movable cover 10 is covered at the bottle mouth position of the sample collection bottle 8 through the pressure of the spring 7; the top end of the water valve switch wire 5 penetrates through the hollow inside of the lifting fixed handle 1 and is arranged outside the lifting fixed handle 1, the bottom end of the water valve switch wire penetrates through the inside of the valve fixed block 6 and is connected with the valve movable cover 10, the water valve switch wire 5 outside the lifting fixed handle 1 is pulled to open the valve movable cover 10, and water to be collected flows into the sample collecting bottle 8.
The top end of the lifting fixed handle 1 is provided with a winder 13 with a locking function, the water valve switch wire 5 passes through the hollow lifting fixed handle 1, and the tail end of the water valve switch wire extends out of the lifting fixed handle 1 and is wound on the winder 13. The lifting fixed handle 1 is of a multi-section telescopic structure, and a length scale is arranged on the lifting fixed handle 1.
The central position of the bottom end of the valve movable cover 10 is provided with a spherical sealing cover 12, a circle of sealing ring 11 is arranged around the spherical sealing cover 12, and when the spring 7 presses the valve movable cover 10, the spherical sealing cover 12 is in interference fit with the bottle mouth of the sample collection bottle 8, so that the bottle mouth is sealed. The sample collection bottle 8 is made of PVC.
The protruding department of the top bottleneck of sample collection bottle 8 is provided with the pin thread, is connected through the box thread cooperation of pin thread and sampling bottle fixed knot structure 2 bottoms. The middle groove of the top end of the sample collection bottle 8 is provided with female threads, and the female threads are matched and connected with male threads at the top of the conical balance weight 9. The materials of the lifting fixing handle 1, the sampling bottle fixing structure 2 and the lifting connecting support 3 are made of alloy materials.
The utility model discloses detachable monitoring well groundwater heavy metal sample depthkeeping sampling device's sampling process as follows:
the method comprises the steps of firstly, assembling a sampler, replacing a proper and clean PVC sample collection bottle according to the structure of a monitoring well and the sampling amount, installing a conical balance weight to the bottom end of the PVC sample collection bottle, assembling a lifting fixing handle and a lifting connecting support, connecting one section of a water valve switch wire to a valve, and enabling the other end of the water valve switch wire to penetrate through a hollow sleeve lifting wire from the center.
And step two, the sampler is placed downwards, the fixed handle is lifted in a hand-held mode, the sampler is slowly placed to the specified sampling depth in the monitoring well by observing the scale on the lifting line of the hollow casing, and the switch line of the water valve is kept in a loose state in the process.
And step three, collecting the sample, namely fixedly lifting the fixed handle when the sampler reaches a specified depth, lifting a water valve switch wire, opening the valve, allowing the groundwater sample to enter the sampling bottle, and loosening the water valve switch wire again after the sample is collected without stress.
And step four, replacing and continuously sampling, lifting the fixed handle, lifting the sampler out of the monitoring well, and keeping the opening and closing line of the water valve loose in the process so as to avoid the false opening of the valve. And (3) unloading the conical balance weight and the PVC sampling bottle from the sampler, sealing the sampled PVC sampling bottle to be transported, replacing a new PVC sampling bottle, installing the conical balance weight, and collecting the next sample.
Example one: monitoring of heavy metal samples in underground water monitoring wells in southwest karst areas
In order to analyze elements such as iron ions, copper ions, manganese ions, lead ions, zinc ions, potassium ions, calcium ions, sodium ions, magnesium ions and the like in underground water of a certain place in a southwest karst area, the underground water sample in the existing monitoring well is collected by using the device. Through investigation, the diameter of an opening of a monitoring well in the monitoring process is 110cm, the underground water target monitoring horizon is 2m, the sampling amount is 500ml, after the monitoring well arrives at the site, a PVC sampling bottle with a proper volume and diameter is selected, a conical counterweight, the PVC sampling bottle and a lifting fixing handle are assembled to a fixing device, one section of a water valve switch line is connected with a valve, and the other end of the water valve switch line penetrates out of the lifting fixing handle from the center. According to the sampling degree of depth, slowly transfer the sampler, the handheld fixed handle that promotes of in-process makes the fixed handle atress of promotion, and water valve switch line keeps the lax state. When the sampler reaches a specified depth, the hollow sleeve lifting wire is fixed, the water valve switch wire is lifted upwards, the valve is opened, the underground water sample enters the sampling bottle, and after the sample is collected, the water valve switch wire is loosened again and is not stressed. The fixed handle is lifted up to lift the sampler out of the monitoring well, and the switch wire of the water valve is kept loose in the process, so that the valve is prevented from being opened by mistake. And (3) unloading the conical balance weight and the PVC sampling bottle from the sampler, sealing the sampled PVC sampling bottle to be transported, replacing a new PVC sampling bottle, installing the conical balance weight, and collecting the next sample.
In a word, the device can be used for replacing sampling bottles with pertinence according to the structures of different types of monitoring wells and the sampling amount, and is suitable for monitoring wells with various specifications in the field. And simultaneously, samples monitored at different depths can be accurately obtained by strictly controlling the switches of the water inlet and outlet valves. Because the detachability of sampling bottle makes sample collection and storage integration, avoids the interference between the sample, reduces because the interference of heavy metal comes in the sampling process, improves groundwater heavy metal sample test accuracy.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (8)
1. A detachable depth-fixed sampling device for a heavy metal sample in underground water of a monitoring well is characterized by comprising a detachable lifting fixing part, a water inlet and outlet valve part, a sample collecting bottle (8) and a conical balance weight (9); wherein:
the lifting fixing part comprises a lifting fixing handle (1), a sampling bottle fixing structure (2) and a lifting connecting bracket (3); the lifting fixed handle (1) is of a telescopic structure with a hollow interior; the top end of the lifting connecting bracket (3) is connected with the lifting fixing handle (1), and the bottom end of the lifting connecting bracket is connected with the top end of the sampling bottle fixing structure (2); the bottom end of the sampling bottle fixing structure (2) is provided with an opening, a thread is arranged at the opening, and the sampling bottle fixing structure is detachably connected with the bottle opening of the sample collecting bottle (8) through the thread; the bottom end of the sample collection bottle (8) is provided with a thread, and is detachably connected with the conical balance weight (9) through the thread;
the water inlet and outlet valve part is arranged in the lifting fixing part and comprises a water valve switch wire (5), a valve fixing block (6), a spring (7) and a valve movable cover (10); wherein the bottom of the lifting connecting bracket (3) is provided with a valve fixing surface (4), and a valve fixing block (6) is arranged at the central position of the valve fixing surface (4); the top end of the spring (7) is connected with the valve fixing block (6), and the bottom end of the spring is connected with the top end of the valve movable cover (10); the valve movable cover (10) is covered at the bottle opening position of the sample collection bottle (8) through the pressure of the spring (7); the top end of the water valve switch wire (5) penetrates through the hollow inside of the lifting fixed handle (1) and is arranged outside the lifting fixed handle (1), the bottom end of the water valve switch wire penetrates through the inside of the valve fixed block (6) and is connected with the valve movable cover (10), the water valve switch wire (5) outside the lifting fixed handle (1) is pulled to open the valve movable cover (10), and water to be collected flows into the sample collection bottle (8).
2. The detachable depth-fixed sampling device for the heavy metal samples in the underground water of the monitoring well as defined by claim 1 is characterized in that a winder (13) with a locking function is installed at the top end of the lifting fixing handle (1), the water valve switch wire (5) penetrates through the hollow lifting fixing handle (1), and the tail end of the water valve switch wire extends out of the lifting fixing handle (1) and is wound on the winder (13).
3. The detachable depth-fixed sampling device for the underground water heavy metal samples of the monitoring well as the claim 1 is characterized in that the lifting fixed handle (1) is of a multi-section telescopic structure, and a length scale is arranged on the lifting fixed handle (1).
4. The underground water heavy metal sample depth-setting sampling device of the detachable monitoring well as defined by claim 1 is characterized in that a spherical sealing cover (12) is arranged at the center of the bottom end of the valve movable cover (10), a circle of sealing ring (11) is arranged around the spherical sealing cover (12), and when the spring (7) presses the valve movable cover (10), the spherical sealing cover (12) is in interference fit with the bottle mouth of the sample collection bottle (8) to seal the bottle mouth.
5. The detachable depth-fixed sampling device for the underground water heavy metal samples of the monitoring well as defined by claim 1, wherein the sample collection bottle (8) is made of PVC.
6. The underground water heavy metal sample depth-setting sampling device of the detachable monitoring well as defined in claim 1 is characterized in that a male thread is arranged at a protruding part of a bottle opening at the top end of the sample collection bottle (8) and is in fit connection with a female thread at the bottom end of the sample collection bottle fixing structure (2) through the male thread.
7. The detachable depth-fixed sampling device for the underground water heavy metal samples of the monitoring well as the claim 1 is characterized in that a female thread is arranged at a groove in the middle of the top end of the sample collection bottle (8) and is in fit connection with a male thread at the top of the conical balance weight (9) through the female thread.
8. The detachable depth-fixed sampling device for the underground water heavy metal samples of the monitoring well as defined in claim 1 is characterized in that the lifting fixing handle (1), the sampling bottle fixing structure (2) and the lifting connecting support (3) are made of alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020638437.9U CN212059482U (en) | 2020-04-24 | 2020-04-24 | Detachable monitoring well groundwater heavy metal sample depthkeeping sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020638437.9U CN212059482U (en) | 2020-04-24 | 2020-04-24 | Detachable monitoring well groundwater heavy metal sample depthkeeping sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN212059482U true CN212059482U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020638437.9U Expired - Fee Related CN212059482U (en) | 2020-04-24 | 2020-04-24 | Detachable monitoring well groundwater heavy metal sample depthkeeping sampling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN212059482U (en) |
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2020
- 2020-04-24 CN CN202020638437.9U patent/CN212059482U/en not_active Expired - Fee Related
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Granted publication date: 20201201 |