CN215865974U - Novel automatic layering of groundwater undisturbed sampling device - Google Patents
Novel automatic layering of groundwater undisturbed sampling device Download PDFInfo
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Abstract
The utility model discloses a novel undisturbed automatic layering sampling device for underground water, which comprises a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein the sample bottle comprises an upper opening end, the upper end water inlet control module is assembled at the upper opening end of the sample bottle, and the protection and counterweight module is sleeved on the sample bottle. The utility model has the beneficial effects that: the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer; the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate; the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of underground water environment monitoring, in particular to a novel undisturbed automatic layered sampling device for underground water.
[ background of the utility model ]
The underground water pollution in China has become a common phenomenon, and the overall characteristics of the underground water pollution are that the pollution source is wide in multiple pollution areas, the pollution source is difficult to find, the pollution source and the pollution way are difficult to find, the prevention and treatment difficulty is high, and the pollution source has concealment, hysteresis and complexity. At present, underground water pollution in China mainly comprises acidification, heavy metal pollution is high, and salinization, hardening and other conditions are common. In 2017, in 5100 water quality monitoring points in the whole country, the inferior grade and the extreme grade of underground water account for nearly seven components. The pollution source is of a multi-compound type and has shown the trends of spreading from cities to rural areas, spreading from east to west, expanding from local areas to areas and developing from point to surface.
In recent years, the exploitation and utilization of groundwater has increased rapidly. At present, water supply of nearly 400 large, medium and small cities is from underground water, and about 45 percent of the underground water is used for irrigating agricultural cultivated lands. The pollution of the underground water can cause the enrichment of heavy metals and radioactive chemical substances, and the long-term drinking or indirect eating of the vegetables planted by the polluted underground water can cause diseases such as cancer, cardiovascular and cerebrovascular sclerosis, neuritis and the like, thereby causing serious influence on the health of human bodies. Underground water resources are polluted in the development process, and the reduction of high-quality underground water can be caused when the underground water environment is damaged. The pollution problem of the underground water is more and more serious, and the water quality of the underground water in China is adversely affected. In order to solve the problem, relevant departments in China carry out strict underground water pollution source investigation and current situation monitoring on economic construction development projects. Therefore, in order to realize the standard and effective collection of the groundwater, the quality control of the groundwater sampling process must be ensured, so that the real and accurate data of a representative groundwater sample can be obtained.
The developed countries attach great importance to the underground water sampling technology, and the sampling technology is deeply researched to form a large-scale serialized sampling appliance product. The foreign groundwater sampling device, no matter the conventional sampler, the sampling pump, the fixed depth sampler, or the groundwater stratified sampling system, all has the characteristics of small size, flexibility, portability, reliable sampling quality, etc. At present, domestic underground water sampling is mainly manual sampling, and is easily interfered by external factors in the sampling process. Domestic groundwater sampling equipment is also relatively lagged behind.
According to the design structure and sampling principle of the device, the current underground water monitoring and sampling devices are roughly divided into 4 types: sample cylinder sample thief, inertial type sample thief, gas drive formula sample thief and dive electric pump formula sample thief as follows specifically:
the sampling cylinder type sampler consists of a rope and a sampling cylinder. According to sampling principle and manufacturing material of the sampling cylinder, the sampling cylinder is divided into a plurality of types: (1) installing a valve body on the sampling cylinder to control the sampling of the groundwater sample, such as a Bailer sampler and a discontinuous interval sampler of Solinst company; (2) groundwater sample sampling was performed by hydraulic pressure and sample cylinder lowering speed control, as in the Kabis sampler: (3) the cylinder body can be made of various materials such as stainless steel, PVC and the like, and can also be directly replaced by a polyethylene bag, such as a Hydrasleeve sampler and the like. During sampling, the sampling cylinder is placed to the underground water sampling horizon from the wellhead through the rope, and the sampling cylinder takes underground water samples of the target depth to realize underground water sampling.
The inertial sampler consists of a sampling pipe and an inertial pump head. The design has one-way water installations in the inertial pump head, installs in the sampling tube bottom, puts into specified sampling depth in the groundwater monitoring well, and sampling tube upper portion exposes the well head, and bare-handed or adopt machinery to push down fast and pull up the sampling tube, in the time launch get into the sampling tube under the inertial force effect fast, the check valve was closed when pulling up, makes groundwater sample liquid level rise gradually to the outflow of sampling tube last port in the sampling tube.
The gas-driven sampler consists of a gas driving pipe, a sampling pipe and a pump body, and can be divided into an air bag pump, a U-shaped pipe sampler and the like according to the structural design of the pump body. High-pressure gas enters the pump body through the gas driving pipe, drives underground water to enter the sampling pipe, releases the high-pressure gas, and the underground water enters the pump body under the action of formation pressure, so that circulation is carried out, and the underground water sample returns to the ground from the sampling pipe, so that underground water sampling is realized.
The submersible electric pump type sampler is characterized in that a submersible electric pump is driven to a sampling layer position, and a groundwater sample is conveyed to the ground through the submersible electric pump to realize sampling operation.
However, the existing sampling devices have certain defects in the groundwater sampling process, and the main defect types can be divided into the following types:
the disturbance is large, so that the obtained underground water sample index cannot effectively represent the actual situation. After the sampling of the sampling cylinder sampler, the taken underground water sample needs to be re-filled into the sample bottle, so that the contact time with air is increased, the disturbance is large, and the accuracy of subsequent index detection is seriously influenced. The external force can produce very big stirring to groundwater in inertial pump sampling process, directly influences the representativeness of gathering the water sample. The gas-driven sampler is susceptible to sampling of groundwater containing dissolved gas due to the applied gas pressure.
② layered sampling cannot be realized. The water inlet time of the sampling cylinder and the inertial sampler is not well mastered, the water sample is easy to be mixed and polluted, and layered sampling cannot be realized.
And the auxiliary equipment is more, an additional power supply is needed, and the field work is inconvenient. The gas-driven sampler has a good sampling effect and is widely used, but the operation procedure is more complicated and the supporting equipment is more. The submersible electric pump type sampler is limited by the manufacturing process of electric wires and a submersible electric pump, and the sampler requires a larger well diameter and a relatively shallow sampling depth. The two types of samplers need additional power sources and high-pressure gas sources, are inconvenient to carry and use, and directly cause the field use efficiency to be reduced.
Fourthly, the cost is high and the system is complex. The operation procedures of the gas-driven sampler and the submersible electric pump type sampler are complicated, higher learning cost is needed, the requirements on personal knowledge and operation are higher, and the difficulty in engineering popularization is higher. Moreover, the flexibility is poor, the module is not a module component, and the module can not be cooperatively used with the existing tool in engineering.
[ Utility model ] content
The utility model discloses a novel undisturbed automatic layered sampling device for underground water, which can accurately obtain a real underground water sample, has strong operability and low cost, and solves the technical problems of large disturbance to the underground water, incapability of accurately layered sampling, gas overflow, more auxiliary equipment and the like in sampling.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a novel undisturbed automatic layered sampling device for groundwater comprises a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein one end of the sample bottle is closed, the other end of the sample bottle is open and comprises an upper open end, the upper end water inlet control module is assembled at the upper open end of the sample bottle, the protection and counterweight module is sleeved on the sample bottle,
the upper water inlet control module comprises an upper sleeve, a lower sleeve and a polytetrafluoroethylene film arranged between the upper sleeve and the lower sleeve, the upper sleeve is internally filled with water-swellable expansion rubber, the outer wall and the bottom wall of the upper sleeve are uniformly provided with holes, and the inner wall and the top wall of the upper sleeve are closed; the lower sleeve is of a closed structure and is filled with a silicon rubber ring, one end of the inner side wall, facing the upper sleeve, is a tip end, and the other end of the inner side wall is a flat end;
the protection and counterweight module is a silicon rubber flexible protective sleeve.
As a preferable improvement of the present invention, the upper open end of the sample bottle is a threaded opening.
As a preferable improvement of the present invention, the upper sleeve and the lower sleeve are both made of a stainless steel material.
In a preferred modification of the present invention, the swelling rubber is a rubber doped with a sodium polyacrylate super absorbent resin.
The system also comprises a well rope which is connected with the upper end water inlet control module and is used for lowering and lifting the sample bottle.
As a preferable improvement of the present invention, the sample bottle further comprises a bottle cap for connecting with the sample bottle.
The utility model has the following beneficial effects:
1. the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer;
2. the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate;
3. the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a novel undisturbed automatic stratified sampling device for groundwater according to embodiment 1 of the utility model;
FIG. 2 is a schematic diagram of a bottle cap structure of the novel undisturbed automatic stratified sampling device for groundwater in embodiment 1 of the utility model;
fig. 3 is a schematic structural diagram of an upper-end water inlet control module of the novel undisturbed automatic stratified sampling device for groundwater according to embodiment 1 of the utility model.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, the utility model provides a novel undisturbed automatic layering sampling device for groundwater, which comprises a sample bottle 1, an upper end water inlet control module 2, a protection and counterweight module 3, a well rope 4 and a bottle cap 5, wherein the sample bottle 1 comprises an upper opening end 11, the upper end water inlet control module 2 is assembled at the upper opening end 11 of the sample bottle 1, and the upper opening end 11 is a threaded opening. The protection and counterweight module 3 is sleeved on the sample bottle 1. The sample bottle 1 is used for sampling heavy metal polluted underground water. The sample bottle 1 can adopt a brown sample bottle which accords with national standards, the size and the material are consistent with the national standard requirements, and an opening is only arranged according to the requirements so that underground water can continuously enter the sample bottle 1 to update the water sample in the bottle, thereby ensuring that the water sample in the sampling device can represent underground water.
Referring to fig. 3 again, the upper water inlet control module 2 includes an upper sleeve 21, a lower sleeve 22, and a teflon film 23 disposed between the upper sleeve 21 and the lower sleeve 22, and the upper sleeve 21 and the lower sleeve 22 are made of stainless steel material and are both connected by threads. The upper sleeve 21 is internally provided with water-swelling expansion rubber 211, the outer wall and the bottom wall are uniformly provided with holes, the shapes of the holes are indefinite, and the inner wall and the top wall are closed. The lower sleeve 22 is a closed structure and is filled with a silicone rubber ring 221, one end of the inner side wall 222 facing the upper sleeve 21 is a pointed end, the other end of the inner side wall is a flat end, after the expansion rubber 211 expands, the polytetrafluoroethylene film 23 is pressed to move downwards, due to the existence of the pointed end, the polytetrafluoroethylene film 23 is partially cut, and underground water enters the sample bottle 1.
It should be further noted that the expanded rubber 211 is rubber doped with sodium polyacrylate super absorbent resin, the rubber is preferably silicon rubber, the silicon rubber is soft and has certain elasticity, the polytetrafluoroethylene film 23 can be prevented from accidentally falling off and being cut, the groundwater is prevented from entering the sample bottle 1 in advance, the silicon rubber has stable chemical properties, and adverse physicochemical effects with detection factors in groundwater under common conditions can not occur. The expanded rubber 211 adopts high-water-absorption resin containing sodium polyacrylate, the extrusion time of the expanded rubber to the polytetrafluoroethylene film 23 after the expanded rubber is expanded in water is controlled by adjusting the component proportion of the added sodium polyacrylate high-water-absorption resin in the rubber, the adjustable time interval of the expanded rubber is 12 hours to 7 days according to the requirements of national standard specifications, and the addition amount of the sodium polyacrylate high-water-absorption resin in the rubber is in inverse proportion to the expansion time.
The protection and counterweight module 3 is a silicon rubber flexible protective sleeve. The protective sleeve can avoid accidental collision and damage when the sampling device is used for lowering a water well. The counter weight is selected for use according to actual conditions, and to heavy metal pollution groundwater sampling, need add extra counter weight in order to offset the buoyancy of empty bottle.
The well rope 4 is connected with the upper end water inlet control module 2 and used for lowering and lifting the sample bottle 1. The bottle cap 5 is used for being connected with the sample bottle 1 in a covering mode. After the sample bottle 1 collects a water sample and is lifted to the ground, the upper end water inlet control module 2 is screwed off, and then the bottle cap 5 is screwed on to finish sampling.
Example 2
In a certain agrochemical factory, pollution indexes comprise heavy metals, VOCs, SVOCs, pesticides and TPH, a monitoring well is established by adopting a PVC pipe with the diameter of 75mm, the well depth is 12m, the underground water burial depth is about 5m, the well pipe screening range is 5-10 m underground, after the well is washed, the sampling device is lowered to the depth of 6m for sampling, after the polytetrafluoroethylene film is cut for 12 hours, the underground water enters a sampling bottle and is continuously updated, and after 24 hours, the sampling device is taken out.
The sample bottle is provided with an upper opening and a lower opening, the capacity is 250mL, the bottle height is 138mm, the diameter of the bottle body is 60.5, the inner diameter of the bottle opening is 17.5mm, and the outer diameter of the bottle opening is 27 mm. The overall length of the sampling device is 320mm, and the outer diameter is 60.5 mm.
Example 3
In a chromium salt factory, pollution indexes mainly comprise heavy metals such as chromium, lead and arsenic, a loose rock pore water monitoring well is built by adopting a stainless steel pipe with the diameter of 110mm, the well depth is 20m, the groundwater depth is 11.2m, and the well pipe screening depth is 11-18 m. After washing the well, the two sampling devices are simultaneously lowered to depths of 12m and 17m for sampling, the polytetrafluoroethylene film is cut for 1d, the underground water enters the sampling bottle and is continuously updated after the film is cut, and the two sampling devices are taken out after 2 d.
The standard sample bottle has the capacity of 500mL, the bottle height of 169mm, the bottle body diameter of 74.5mm, the inner diameter of a bottle opening of 17mm and the outer diameter of the bottle opening of 27 mm. In the present invention, the standard sample bottle is a boston bottle, which is specifically shown in table 1 below.
TABLE 1
The utility model has the following beneficial effects:
1. the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer;
2. the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate;
3. the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
While embodiments of the utility model have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. A novel undisturbed automatic layered sampling device for groundwater is characterized by comprising a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein one end of the sample bottle is closed, the other end of the sample bottle is open and comprises an upper open end, the upper end water inlet control module is assembled at the upper open end of the sample bottle, the protection and counterweight module is sleeved on the sample bottle,
the upper water inlet control module comprises an upper sleeve, a lower sleeve and a polytetrafluoroethylene film arranged between the upper sleeve and the lower sleeve, the upper sleeve is internally filled with water-swellable expansion rubber, the outer wall and the bottom wall of the upper sleeve are uniformly provided with holes, and the inner wall and the top wall of the upper sleeve are closed; the lower sleeve is of a closed structure and is filled with a silicon rubber ring, one end of the inner side wall, facing the upper sleeve, is a tip end, and the other end of the inner side wall is a flat end;
the protection and counterweight module is a silicon rubber flexible protective sleeve.
2. The novel undisturbed automatic layered sampling device for underground water according to claim 1, characterized in that: the upper opening end of the sample bottle is a threaded opening.
3. A novel undisturbed automatic stratified sampling device for underground water according to claim 1 or 2, wherein: the upper sleeve and the lower sleeve are both made of stainless steel materials.
4. The novel undisturbed automatic layered sampling device for underground water according to claim 1, characterized in that: the expanded rubber is rubber doped with sodium polyacrylate super absorbent resin.
5. A novel undisturbed automatic stratified sampling device for underground water according to claim 1 or 4, characterized in that: the well rope is connected with the upper end water inlet control module and used for lowering and lifting the sample bottle.
6. The novel undisturbed automatic layered sampling device for underground water according to claim 5, characterized in that: the bottle cover is used for being connected with the sample bottle.
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| CN202121721698.8U CN215865974U (en) | 2021-07-27 | 2021-07-27 | Novel automatic layering of groundwater undisturbed sampling device |
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| CN202121721698.8U CN215865974U (en) | 2021-07-27 | 2021-07-27 | Novel automatic layering of groundwater undisturbed sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871186A (en) * | 2024-03-11 | 2024-04-12 | 山东省煤田地质局第三勘探队 | Hydrogeological exploration groundwater level device and application method thereof |
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2021
- 2021-07-27 CN CN202121721698.8U patent/CN215865974U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871186A (en) * | 2024-03-11 | 2024-04-12 | 山东省煤田地质局第三勘探队 | Hydrogeological exploration groundwater level device and application method thereof |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A New Type of Undisturbed Automatic Stratified Sampling Device for Groundwater Effective date of registration: 20230615 Granted publication date: 20220218 Pledgee: Hunan Xiangjiang New Area Rural Commercial Bank Co.,Ltd. Pledgor: HUNAN NEWWORLD SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2023980044115 |
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