CN112161840A - Polyvinyl alcohol-based sponge water sampling device, use method of device and application of device - Google Patents
Polyvinyl alcohol-based sponge water sampling device, use method of device and application of device Download PDFInfo
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- CN112161840A CN112161840A CN202011055548.8A CN202011055548A CN112161840A CN 112161840 A CN112161840 A CN 112161840A CN 202011055548 A CN202011055548 A CN 202011055548A CN 112161840 A CN112161840 A CN 112161840A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 240
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 158
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 158
- 238000005070 sampling Methods 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 116
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 14
- 125000003158 alcohol group Chemical group 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000011160 research Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 238000011835 investigation Methods 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 206010016807 Fluid retention Diseases 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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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
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Abstract
The invention discloses a polyvinyl alcohol-based sponge water sampling device, a use method of the device and application of the device, and relates to the field of water sampling in hydrogeological exploration and site environment investigation. The water taking device comprises a water taking component, a protective shell and a first sealing head, wherein the protective shell is a hollow pipe body, two ends of the hollow pipe body are open, and the first sealing head is fixed at one end of the hollow pipe body; the water taking component comprises a second sealing head and a polyvinyl alcohol-based sponge body fixedly connected to the second sealing head, the polyvinyl alcohol-based sponge body is positioned in the hollow pipe body, and the second sealing head is fixed at the other end of the hollow pipe body; the sealing head II is provided with a vent hole which can penetrate through the hollow pipe body and the outside, the vent hole extends outwards to form a section of hollow pipe, the end part of the hollow pipe is provided with a sealing cover to seal the hollow pipe, and the sealing head II is further provided with a connecting part. The device solves the technical problem that the use scene of a water sampling mode is limited in the prior art, can realize remote water sampling, and saves manpower and material resources.
Description
Technical Field
The invention relates to the field of water sampling in hydrogeological exploration and site environment investigation, in particular to a polyvinyl alcohol (PVA) sponge water sampling device, a use method of the device and application of the device, which can be used for sampling of an underground water monitoring well and can also be used for unmanned aerial vehicle remote control water sampling of river, lake and sea water surfaces where people cannot directly reach.
Background
At present, the national degree of attention to environmental protection is higher and higher, and environmental investigation is the main means of understanding the environmental current situation, and in environmental investigation work, groundwater monitoring well water sampling, natural water body sample are indispensable links of working. Currently, the beller tube is the most common device for sampling underground water, and has the following main limitations:
(1) the water sample can be obtained only under the conditions of sufficient water quantity and sufficient water taking depth, for example, when the water depth is less than the length of the Beller tube, the water sample can not be effectively and quickly taken;
(2) the limitations such as limited use scene can only be used for the sample of the special well of underground water construction, can't be applicable to the water sample in rivers sea lake completely, especially after unmanned aerial vehicle technical development now, can utilize unmanned aerial vehicle remote control to get the water sample, and the use in this kind of situation can't be adapted to completely to the pipe of Belle.
In view of the above, there is a need to provide a sampling device suitable for sampling water including but not limited to shallow water level and water in rivers, lakes and seas remotely, so as to enrich the groundwater and natural water sampling means.
Unlike common sponge, the powerful water absorbing PVA-based sponge has the advantages of fast water absorbing speed, high water maintaining performance, high water absorption of 8-10 times of self weight, high solvent and weak acid and alkali resistance, etc. the porous elastomer obtained through crosslinking reaction of specific water soluble resin has strong water absorbing capacity owing to hydrophilic bond in the molecular structure, and is one sponge product with best water absorbing effect and relatively low cost.
Polyvinyl alcohol (PVA) sponges have been widely used in medical and life settings, as follows:
(1) medical polyvinyl alcohol (PVA) sponge
Polyvinyl alcohol (PVA) sponge, namely polyvinyl alcohol medical-grade microporous sponge, is a high polymer material which has excellent liquid absorption performance, has very soft surface when contacting with a human body and can be completely and naturally degraded. The excellent liquid absorption performance is shown in a higher liquid absorption rate and an ultra-strong liquid absorption rate. Generally, one gram of PAV macroporous sponge without auxiliary materials can absorb body fluid which is equivalent to 8-10 times of the self weight of the PAV macroporous sponge. The material is used for replacing absorbent cotton and absorbent gauze in surgical operations, and can solve the problem that the absorbent cotton or the absorbent gauze needs to be continuously replaced in clinical operations. Moreover, the waste macroporous sponge can be completely and naturally degraded, and the problem of environmental pollution can not be caused.
(2) PVA sponge for cleaning
The cleaning agent is mainly used for household cleaning, automobile cleaning, kitchen cleaning and the like in daily life of thousands of households. The most common is PVA sponge mop, and the biggest characteristic is that PVA polyvinyl alcohol collodion is adopted while the water squeezing self-cleaning function of the wringing mop is ensured to be inherited, so that the mop has strong water absorption and can fully ensure the cleaning work requirement of the working head. The hydrophilic base material has fine connecting pores to make it possess excellent water absorbing and retaining capacity.
So far, no relevant record of the application of polyvinyl alcohol (PVA) sponge in the field of water sampling is found.
Disclosure of Invention
One of the purposes of the invention is to provide a polyvinyl alcohol-based sponge water sampling device, which solves the technical problem that the use scene of a water sampling mode in the prior art is limited, can realize remote water sampling, and saves manpower and material resources.
In order to achieve the above objects, the main technical problems to be overcome by the present invention are:
the polyvinyl alcohol-based sponge is applied to the field of water taking, how to set a device matched with the polyvinyl alcohol-based sponge to realize drilling underground water sampling and monitoring well underground water sampling which can be applied to environmental investigation and evaluation and water sampling under the scenes of rivers, lakes, seas and the like, or a remote unmanned aerial vehicle is matched to realize remote control water taking.
In order to solve the technical problems, the invention adopts the following technical scheme:
a polyvinyl alcohol-based sponge water sampling device comprises a water taking component, a protective shell and a first sealing head, wherein the protective shell is a hollow pipe body, two ends of the hollow pipe body are both open, and the first sealing head is fixed at one end of the hollow pipe body;
the water taking component comprises a second sealing head and a polyvinyl alcohol-based sponge body fixedly connected to the second sealing head, the polyvinyl alcohol-based sponge body is positioned in the hollow pipe body, and the second sealing head is fixed at the other end of the hollow pipe body; when a water sample is required to be taken, the first sealing head and the second sealing head are ensured to be in an open state
A vent hole which can penetrate through the hollow pipe body and the outside is formed in the second sealing head, a section of hollow pipe extends outwards from the vent hole, and a sealing cover is arranged at the end part of the hollow pipe to seal the hollow pipe; and the second sealing head is also provided with a connecting part.
According to the preferable scheme of the invention, the first sealing head and the hollow pipe body, and the second sealing head and the hollow pipe body are connected in a matching manner through threads; the sealing cover is also in threaded matching connection with the hollow pipe.
In another preferred embodiment of the present invention, the polyvinyl alcohol-based sponge body is cylindrical, and when the polyvinyl alcohol-based sponge body is saturated with water, the diameter of the polyvinyl alcohol-based sponge body is exactly equal to or less than the inner diameter of the hollow tube body, and the length of the polyvinyl alcohol-based sponge body is less than the length of the hollow tube body, so that when the polyvinyl alcohol-based sponge body is saturated with water, the polyvinyl alcohol-based sponge body is preferably just filled in the remaining space of the hollow tube body after the sealing head is tightened.
The hollow pipe body is made of PE or PVC materials, and if a water sample has acid-base characteristics, a layer of Teflon material is plated on the inner wall of the hollow pipe body.
The connecting part comprises a lifting ring and a lifting rope, the lifting ring is fixed on the second sealing head, and the lifting rope is connected to the lifting ring.
The invention also aims to provide a remote polyvinyl alcohol-based sponge water sampling device, which comprises an unmanned aerial vehicle, an electric micro-winch and the polyvinyl alcohol-based sponge water sampling device, wherein a connecting part of the polyvinyl alcohol-based sponge water sampling device is fixed on the electric micro-winch, the electric micro-winch is controlled to be opened or closed by an unmanned aerial vehicle remote controller, the electric micro-winch is opened to control the polyvinyl alcohol-based sponge water sampling device to be put down, and the electric micro-winch is closed to control the polyvinyl alcohol-based sponge water sampling device to be retracted.
The invention also aims to provide a use method of the polyvinyl alcohol-based sponge water sampling device, which comprises the following steps:
after the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located to be lowered to a target water surface as a mark, waiting for a certain time, after the water body is completely filled with the polyvinyl alcohol-based sponge body, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, immediately installing the first sealing head and the second sealing head at two ends of the hollow pipe body, and ensuring that the interior of the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
Further, the use method of the polyvinyl alcohol-based sponge water sampling device sequentially comprises the following steps:
after the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located as a mark, waiting for a certain time, after the water body is completely filled with the polyvinyl alcohol-based sponge body, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, immediately inverting the polyvinyl alcohol-based sponge water sampling device, installing a water sample collecting bottle at the position of the hollow pipe, arranging a water pressing piston in the hollow pipe close to the first sealing head, and enabling the water sample in the polyvinyl alcohol-based sponge body to enter the water sample collecting bottle along the vent hole and the hollow pipe under the action of the water pressing piston;
and fourthly, combining related theoretical knowledge to develop experimental research.
The invention further aims to provide a using method of the remote polyvinyl alcohol-based sponge water sampling device, which comprises the following steps:
the method comprises the following steps that firstly, a first sealing head and a second sealing head are opened, a lifting rope is fixed, and then the other end of the lifting rope is fixed on an electric miniature winch connected with an unmanned aerial vehicle;
secondly, flying the unmanned aerial vehicle to a set position where a water sample needs to be taken, then lowering the position of the unmanned aerial vehicle, remotely controlling and starting the electric miniature winch through the unmanned aerial vehicle remote controller, and slowly releasing the lifting rope to enable the polyvinyl alcohol-based sponge water sample taking device to slowly approach the water surface of a destination;
thirdly, controlling the electric micro winch to enable the polyvinyl alcohol-based sponge water sampling device to be placed to a target water surface as a mark, closing the electric micro winch to enable the unmanned aerial vehicle to be in a hovering state, controlling the unmanned aerial vehicle after the polyvinyl alcohol-based sponge body is completely filled with water, starting the electric micro winch, withdrawing the lifting rope to enable the polyvinyl alcohol-based sponge water sampling device to be restored to an initial position of the unmanned aerial vehicle, controlling the unmanned aerial vehicle to enable the unmanned aerial vehicle to be in a safe flying height, immediately fixing the first sealing head and the second sealing head after the unmanned aerial vehicle returns, and ensuring that the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
In the fourth step, a water sample can be taken out for storage by adopting a piston water squeezing mode, specifically, a water sample collecting bottle is arranged at the position of the hollow pipe, a water squeezing piston is arranged in the hollow pipe close to the first sealing head, and the water sample in the polyvinyl alcohol-based sponge body enters the water sample collecting bottle along the vent hole and the hollow pipe under the action of the water squeezing piston.
The invention further aims to provide application of the polyvinyl alcohol-based sponge water sampling device in drilling underground water sampling, monitoring well underground water sampling and water sampling under rivers, lakes and sea scenes.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) repeated use and cost saving
The protective shell and the sealing head can be repeatedly used, and cost is saved for water sampling work.
In the unable direct situation that reachs of rivers lake sea water sampling personnel, need not use boats and ships again and will sample personnel and reach, can directly sample with this device of unmanned aerial vehicle cooperation, saved the cost of using boats and ships.
(2) Saving time and improving efficiency
The polyvinyl alcohol (PVA) sponge as the core component of the device has strong water absorption and higher water absorption speed.
(3) Simple structure and convenient operation
The device is simple and convenient to operate and is very suitable for water sampling work in a field environment.
(4) Wide application range and strong applicability
The device can be used for sampling of underground water monitoring wells and remote control sampling of unmanned planes, such as rivers, lakes, seas and the like, which cannot directly reach positions, and compared with a Beller tube, the device has the advantages of wider application range, more flexible application and stronger applicability.
(5) To extreme conditions
When the device meets a sampling part with shallow water level and less water quantity, the maximum water sample quantity can be obtained to the maximum extent in the situation due to strong water absorption, which cannot be realized by a Beller tube or other sampling modes.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a longitudinal section view of a polyvinyl alcohol-based sponge water sampling device of the invention under the condition of not sampling water;
FIG. 2 is a longitudinal section view of the polyvinyl alcohol-based sponge water sampling device of the invention after water sampling;
FIG. 3 is a schematic view of the working state of the remote polyvinyl alcohol-based sponge water sampling device according to the present invention;
FIG. 4 is an operational view of a method of using the polyvinyl alcohol-based sponge water sampling device according to the present invention;
in the figure: 1. polyvinyl alcohol group cavernosum, 2, protection casing, 3, sealed first, 4, sealed second, 5, air vent, 6, blank pipe, 7, sealed lid, 8, rings, 9, lifting rope, 10, unmanned aerial vehicle, 11, electronic miniature hoist engine, 12, water sample receiving flask, 13, pressurized-water piston.
Detailed Description
The invention provides a polyvinyl alcohol-based sponge water sampling device, a using method of the device and application of the device, and the device is described in detail below by combining specific embodiments in order to make the advantages and technical scheme of the invention clearer and clearer.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Spatially relative terms, such as "below," "lower," "upper," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. Other orientations of the components are possible (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
Referring to fig. 1 and 2, the polyvinyl alcohol-based sponge water sampling device comprises a polyvinyl alcohol-based sponge body 1, a protective shell 2, a first sealing head 3 and a second sealing head 4, and is mainly used for drilling underground water sampling, monitoring well underground water sampling and water sampling under the conditions of rivers, lakes, seas and the like in environmental investigation and evaluation.
When the polyvinyl alcohol group sponge water taking device is used in cooperation with an unmanned aerial vehicle, remote water taking can be achieved, as shown in fig. 3, the invention also aims to provide the remote polyvinyl alcohol group sponge water taking device which comprises the polyvinyl alcohol group sponge water taking device, the unmanned aerial vehicle 10 and the electric micro-winch 11, water is taken in cooperation with the unmanned aerial vehicle through remote control, and time and labor are saved.
Specifically, foretell protection casing 2 is hollow body, and the diameter of this body is decided according to the volume of getting the water sample and the application scenario of getting the water sample, and this hollow body both ends are open, and the body both ends inboard all is equipped with the screw thread, and the body itself is made by PE or PVC material, and the inboard can plate special fluorine dragon material under the condition of needs, utilizes its not to be stained with and the characteristic of acid and alkali resistance.
The first sealing head 3 is connected to one end of the protective shell 2 through threads, for example, the first sealing head is provided with an external thread matched with the protective shell 2, the first sealing head and the external thread are connected in a matched mode, when the first sealing head is screwed down, the inner portion of the protective shell can be ensured to be in a completely sealed state, internal water leakage or external air is prevented, and water sample quality is ensured.
The shape of the polyvinyl alcohol-based sponge body 1 is preferably the same as that of the protective shell, for example, the polyvinyl alcohol-based sponge body is cylindrical, and the polyvinyl alcohol-based sponge body is preferably positioned in the protective shell, so that the diameter of the polyvinyl alcohol-based sponge body is smaller than the inner diameter of the protective shell, when the polyvinyl alcohol-based sponge body 1 is saturated with water, the diameter of the polyvinyl alcohol-based sponge body is just equal to or smaller than the inner diameter of the protective shell 2, and the length of the polyvinyl alcohol-based sponge body is smaller than the length of the protective shell 2, and when the polyvinyl alcohol-based sponge body is saturated with; the polyvinyl alcohol-based sponge body 1 is PVA strong water absorption sponge, namely PVA material polyvinyl alcohol, and can be polyvinyl alcohol medical grade microporous sponge, 1g of the sponge can absorb 8-10 times of water by weight, and the water retention property is strong under the condition of not applying external force; sealed first two 4 is made by PE or PVC material, the outside has the screw thread with 2 inside side screw thread assorted in both ends of protection casing, the other end of protection casing 2 and sealed first two between together through firm the linking of screw thread, sealed first two 4 upper portions have rings 8 that can fix lifting rope 9 simultaneously, sealed first two 4 are last to have one to make the inside air vent 5 with external intercommunication of protection casing, draw forth one section hollow tube 6 of outband screw thread outside air vent 5 toward the device outside, this hollow tube 6 is furnished with the sealed lid 7 of in-band screw thread, open when water sampling, make original gas in the device get rid of rapidly when the water sample gets into polyvinyl alcohol group cavernosum 1, accelerate the water intaking, be equipped with the check valve, water or gas only can discharge from inside to outside, screw up sealed lid 7 again after the water sampling is accomplished, it is sealed.
The polyvinyl alcohol-based sponge body 1 is arranged in the protective shell 2, the sealing head 4 fixed with the polyvinyl alcohol-based sponge body 1 is screwed at one end of the outer shell, and then the sealing head I3 is arranged at the other end of the protective shell 2 and screwed, so that the polyvinyl alcohol-based sponge water sampling device is formed.
Example 1:
the following is a detailed description of the method for using the above-mentioned polyvinyl alcohol-based sponge water sampling device.
After the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located to be lowered to a target water surface as a mark, waiting for a certain time, after the water body is completely filled with the polyvinyl alcohol-based sponge body, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, immediately installing the first sealing head and the second sealing head at two ends of the hollow pipe body, and ensuring that the interior of the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
After the experiment is finished, the protective shell and the first sealing head are cleaned, and after a new second sealing head and the polyvinyl alcohol-based sponge body are filled, a brand-new water sampling device capable of being repeatedly used is formed.
Example 2:
as shown in FIG. 4, the polyvinyl alcohol-based sponge water sampling device of the invention is used in combination with a water pressing piston 13 and a water sample collecting bottle 12. Preferably, the pressurized water piston 13 is made of PE or PVC material or wood, the length of the pressurized water piston is more than or equal to that of the protective shell 2 of the device, and the diameter of one end of the pressurized water piston contacting with the polyvinyl alcohol-based sponge is equal to or slightly smaller than the inner diameter of the protective shell.
After the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located as a mark, waiting for a certain time, after the water body is completely filled with the polyvinyl alcohol-based sponge body, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, immediately inverting the polyvinyl alcohol-based sponge water sampling device, installing a water sample collecting bottle at the position of the hollow pipe, arranging a water pressing piston in the hollow pipe close to the first sealing head, and enabling the water sample in the polyvinyl alcohol-based sponge body to enter the water sample collecting bottle along the vent hole and the hollow pipe under the action of the water pressing piston;
and fourthly, combining related theoretical knowledge to develop experimental research.
After the experiment is finished, the protective shell and the first sealing head are cleaned, and after a new second sealing head and the polyvinyl alcohol-based sponge body are filled, a brand-new water sampling device capable of being repeatedly used is formed.
Example 3:
foretell polyvinyl alcohol group sponge water sampling device cooperation unmanned aerial vehicle uses, through the start-up and the stop of remote controller remote control electric miniature hoist engine 11 to this promotion, the descending and the hovering of this device when controlling the water sampling.
Firstly, opening vent hole sealing covers on a sealing head I and a sealing head II, fixing a lifting rope, and then fixing the other end of the lifting rope on an electric miniature winch connected with an unmanned aerial vehicle;
secondly, flying the unmanned aerial vehicle to a set position where a water sample needs to be taken, then lowering the position of the unmanned aerial vehicle, remotely controlling and starting the electric miniature winch through the unmanned aerial vehicle remote controller, and slowly releasing the lifting rope to enable the polyvinyl alcohol-based sponge water sample taking device to slowly approach the water surface of a destination;
thirdly, controlling the electric micro winch to enable the polyvinyl alcohol-based sponge water sampling device to be placed to a target water surface as a mark, closing the electric micro winch to enable the unmanned aerial vehicle to be in a hovering state, controlling the unmanned aerial vehicle after the polyvinyl alcohol-based sponge body is completely filled with water, starting the electric micro winch, withdrawing the lifting rope to enable the polyvinyl alcohol-based sponge water sampling device to be restored to an initial position of the unmanned aerial vehicle, controlling the unmanned aerial vehicle to enable the unmanned aerial vehicle to be in a safe flying height, and immediately screwing the air vent sealing covers on the first sealing head and the second sealing head after the unmanned aerial vehicle returns to ensure that the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
After the experiment is finished, the protective shell and the first sealing head are cleaned, and after a new second sealing head and the polyvinyl alcohol-based sponge body are filled, a brand-new water sampling device capable of being repeatedly used is formed.
The invention utilizes the high water absorption and the high water retention of the polyvinyl alcohol-based sponge, saves a counter weight and a complex non-return device which are needed by a belleville tube for taking a water sample, can automatically absorb water and take water after contacting the water surface, simplifies the structure, protects the shell to be repeatedly used, and saves the cost.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto.
Although terms such as polyvinyl alcohol based sponge, protective housing, seal head one, seal head two, vent, etc. are used more often herein, the possibility of using other terms is not excluded, and these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
It is further understood that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a polyvinyl alcohol group sponge water sampling device, its includes water intaking component, protection casing and sealing head one, its characterized in that:
the protective shell is a hollow pipe body, two ends of the hollow pipe body are open, and the first sealing head is fixed at one end of the hollow pipe body;
the water taking component comprises a second sealing head and a polyvinyl alcohol-based sponge body fixedly connected to the second sealing head, the polyvinyl alcohol-based sponge body is positioned in the hollow pipe body, and the second sealing head is fixed at the other end of the hollow pipe body; when a water sample needs to be taken, the first sealing head and the second sealing head are ensured to be in an open state;
a vent hole which can penetrate through the hollow pipe body and the outside is formed in the second sealing head, a section of hollow pipe extends outwards from the vent hole, and a sealing cover is arranged at the end part of the hollow pipe to seal the hollow pipe; and the second sealing head is also provided with a connecting part.
2. The polyvinyl alcohol based sponge water sampling device according to claim 1, characterized in that: the first sealing head and the hollow pipe body and the second sealing head and the hollow pipe body are connected in a matching way through threads; the sealing cover is also in matching connection with the hollow pipe through threads.
3. The polyvinyl alcohol based sponge water sampling device according to claim 1, characterized in that: the polyvinyl alcohol-based sponge body is columnar, when the polyvinyl alcohol-based sponge body absorbs water and is saturated, the diameter of the polyvinyl alcohol-based sponge body is just equal to/smaller than the inner diameter of the hollow pipe body, the length of the polyvinyl alcohol-based sponge body is smaller than that of the hollow pipe body, and when the polyvinyl alcohol-based sponge body absorbs water and is saturated, the polyvinyl alcohol-based sponge body is preferably just filled in the residual space of the hollow pipe body after the sealing head is screwed.
4. The polyvinyl alcohol based sponge water sampling device according to claim 1, characterized in that: the hollow pipe body is made of PE or PVC materials, and if a water sample has acid-base characteristics, a layer of Teflon material is plated on the inner wall of the hollow pipe body.
5. The polyvinyl alcohol based sponge water sampling device according to claim 1, characterized in that: the connecting part comprises a lifting ring and a lifting rope, the lifting ring is fixed on the second sealing head, and the lifting rope is connected to the lifting ring.
6. The utility model provides a long-range polyvinyl alcohol group sponge water sampling device which characterized in that: the water sampling device comprises an unmanned aerial vehicle, an electric micro winch and the polyvinyl alcohol-based sponge water sampling device according to any one of claims 1 to 5, wherein a connecting part of the polyvinyl alcohol-based sponge water sampling device is fixed on the electric micro winch, the electric micro winch is controlled to be opened or closed through an unmanned aerial vehicle remote controller, the electric micro winch is opened to control the polyvinyl alcohol-based sponge water sampling device to be placed downwards, and the electric micro winch is closed to control the polyvinyl alcohol-based sponge water sampling device to be withdrawn.
7. The use method of the polyvinyl alcohol-based sponge water sampling device according to any one of claims 1 to 5, characterized by comprising the following steps in sequence:
after the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located as a mark, waiting for a certain time, after the polyvinyl alcohol-based sponge body is completely filled with water, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, and immediately screwing the vent hole sealing covers on the first sealing head and the second sealing head to ensure that the interior of the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
8. The use method of the polyvinyl alcohol-based sponge water sampling device according to any one of claims 1 to 5, characterized by comprising the following steps in sequence:
after the well washing is finished, opening the vent hole sealing covers on the sealing head I and the sealing head II to fix the lifting rope on the connecting part;
secondly, enabling one end of the first sealing head to face downwards and one end of the second sealing head to face upwards, and slowly placing the polyvinyl alcohol-based sponge water sampling device into an underground water monitoring well by utilizing the traction of a lifting rope;
thirdly, taking the end where the first sealing head is located as a mark, waiting for a certain time, after the water body is completely filled with the polyvinyl alcohol-based sponge body, lifting the polyvinyl alcohol-based sponge water sampling device to the ground surface by using a traction rope, immediately inverting the polyvinyl alcohol-based sponge water sampling device, installing a water sample collecting bottle at the position of the hollow pipe, arranging a water pressing piston in the hollow pipe close to the first sealing head, and enabling the water sample in the polyvinyl alcohol-based sponge body to enter the water sample collecting bottle along the vent hole and the hollow pipe under the action of the water pressing piston;
and fourthly, combining related theoretical knowledge to develop experimental research.
9. The use method of the remote polyvinyl alcohol-based sponge water sampling device according to claim 6, characterized by comprising the following steps in sequence:
firstly, opening vent hole sealing covers on a sealing head I and a sealing head II, fixing a lifting rope, and then fixing the other end of the lifting rope on an electric miniature winch connected with an unmanned aerial vehicle;
secondly, flying the unmanned aerial vehicle to a set position where a water sample needs to be taken, then lowering the position of the unmanned aerial vehicle, remotely controlling and starting the electric miniature winch through the unmanned aerial vehicle remote controller, and slowly releasing the lifting rope to enable the polyvinyl alcohol-based sponge water sample taking device to slowly approach the water surface of a destination;
thirdly, controlling the electric micro winch to enable the polyvinyl alcohol-based sponge water sampling device to be placed to a target water surface as a mark, closing the electric micro winch to enable the unmanned aerial vehicle to be in a hovering state, controlling the unmanned aerial vehicle after the polyvinyl alcohol-based sponge body is completely filled with water, starting the electric micro winch, withdrawing the lifting rope to enable the polyvinyl alcohol-based sponge water sampling device to be restored to an initial position of the unmanned aerial vehicle, controlling the unmanned aerial vehicle to enable the unmanned aerial vehicle to be in a safe flying height, and immediately screwing the air vent sealing covers on the first sealing head and the second sealing head after the unmanned aerial vehicle returns to ensure that the polyvinyl alcohol-based sponge water sampling device is in a completely sealed state;
and fourthly, conveying the polyvinyl alcohol group sponge water sampling device after water sampling to a laboratory, extruding water in the polyvinyl alcohol group sponge body by using a method meeting the standard requirement, and then developing experimental research by combining related theoretical knowledge.
10. The polyvinyl alcohol-based sponge water sampling device according to any one of claims 1 to 5, which is applied to underground water sampling in a drilled hole, underground water sampling in a monitoring well and water sampling in rivers, lakes and sea scenes.
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