CN214149991U - Bell pipe for taking underground water - Google Patents
Bell pipe for taking underground water Download PDFInfo
- Publication number
- CN214149991U CN214149991U CN202120017581.5U CN202120017581U CN214149991U CN 214149991 U CN214149991 U CN 214149991U CN 202120017581 U CN202120017581 U CN 202120017581U CN 214149991 U CN214149991 U CN 214149991U
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- China
- Prior art keywords
- water
- cavity
- water inlet
- auxiliary
- guide hole
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 221
- 239000003673 groundwater Substances 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 description 17
- 238000005070 sampling Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Abstract
The utility model discloses a bailer tube for getting groundwater, which comprises a water taking cavity, a pressing cavity and a water inlet auxiliary cavity, wherein the pressing cavity and the water inlet auxiliary cavity are sequentially arranged outside the water taking cavity from inside to outside and are communicated; the utility model discloses in be provided with the vice chamber of intaking and the chamber of exerting pressure that is linked together outside the chamber of intaking to the body of water intaking intracavity stretches into the intracavity of exerting pressure, after the chamber of intaking water finishes, through the water lift portion of the vice intracavity of tractive water intaking, make the water of the vice intracavity of intaking all impress the intracavity of exerting pressure, and initiatively exert decurrent pressure to the body, thereby make main water inlet of body shutoff with the state that compresses tightly, thoroughly avoided because the easy problem of leaking of the bailer pipe collision wall of a well in the promotion process.
Description
Technical Field
The utility model relates to a reach groundwater sampling equipment technical field, especially relate to a bailer pipe for getting groundwater.
Background
The Beller tube water sampler is used for sampling surface water and underground water of pipelines, lake water, river water and well water and is also used for sampling other liquids, the name of the Beller tube is from transliteration, the water sampler, the water sampling pipe and the water sampling pipe are different in terms of domestic water sampler, the water sampling pipe and the like, the material is divided into two materials of sanitary PVC (polyvinyl chloride) and PE (polyethylene), and the Beller tube water sampler is non-toxic and pollution-free.
In the sampling process of underground deep water, a Beller tube is needed, the water in a control tube is blocked by a check ball in the traditional Beller tube, but after the traditional Beller tube is used for a long time, the check ball is deformed or abraded, so that the water in the sampling tube leaks, and the purpose of adopting the underground deep water cannot be achieved; although the prior art is improved correspondingly, the improved belleville tube with application number 201921265839.2, which performs double sealing through the check ball and the check plate, greatly improves the sealing performance and prevents secondary pollution; the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency; however, as the sealing acting force is not actively applied in the sampling process, in the process that the belleville tube is vertically lifted out of the well after underground water is collected, the free sealing ball at the bottom of the belleville tube moves due to the fact that the well or the well mouth collides with the well wall or the well mouth in an accident situation, so that a water inlet is opened, the collected underground water flows out, the collection fails, and secondary collection is needed;
therefore, the improvement of the structure of the baylor tube is needed to ensure that the baylor tube can collide in the collection process and cannot flow out of collected underground water, so that the collection frequency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but the body initiative of exerting pressure be used for getting the bailer pipe of groundwater to prior art's defect and not enough.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a bailer pipe for getting groundwater, including getting the water cavity and from interior to exterior setting gradually get the water cavity outside and the chamber of exerting pressure and the vice chamber of intaking that is linked together, it is provided with the body to get the water cavity inside, the body will get the water cavity and cut apart into water storage chamber and the main chamber of intaking from top to bottom, set up axial rectangular guiding hole on the water storage chamber, be provided with on the body through the edge of a wing that rectangular guiding hole stretches into in the intracavity of exerting pressure, be provided with between the edge of a wing and the rectangular guiding hole and be used for the shutoff part of shutoff rectangular guiding hole, the outer wall on the edge of a wing with the inner wall in the chamber of exerting pressure, the inner wall in rectangular guiding hole is laminated mutually, and through can follow the shutoff part that rectangular guiding hole removed or warp, form seal structure jointly; a main water inlet is formed in the center of the bottom of the water inlet main cavity, the floating body is provided with a plugging part for plugging the main water inlet, and a plurality of water permeable openings for communicating the water storage cavity with the water inlet main cavity are formed in the periphery of the plugging part; the upper part of the pressure applying cavity is provided with a pressure applying water inlet, the pressure applying water inlet is positioned on the side wall of the pressure applying cavity connected with the water inlet auxiliary cavity, the side wall of the lower part of the water inlet auxiliary cavity is provided with an auxiliary water inlet, the inside of the water inlet auxiliary cavity is provided with a water lifting part, the outer wall of the water lifting part is attached to the inner wall of the water inlet auxiliary cavity, when the water lifting part is positioned at the bottom of the water inlet auxiliary cavity, the upper surface of the water lifting part is lower than the auxiliary water inlet, and when the water lifting part is positioned at the top of the water inlet auxiliary cavity, the side wall of the water lifting part can block the pressure applying water inlet; the water lifting part extends out of the water inlet auxiliary cavity through a lifting rod, and the tops of the lifting rod and the water storage cavity are respectively connected with corresponding traction ropes.
Preferably, the bottom of the pressure application cavity is provided with an auxiliary water inlet for assisting the floating body to float.
Preferably, the top of the pressure application cavity is provided with a water outlet for draining water, the top of the water storage cavity is provided with a water intake for taking water, and the water outlet and the water intake are both provided with corresponding sealing covers.
Preferably, the water inlet auxiliary cavity is of an annular structure, a plurality of uniformly distributed pressure applying cavities are arranged between the water inlet auxiliary cavity and the water storage cavity, flanges corresponding to the pressure applying cavities in number are arranged on the floating body, the number of the flanges is at least 2, and when the number of the flanges is 2, the arrangement positions of the flanges are symmetrical.
Preferably, when separation portion sets up when the inside of rectangular guiding hole, separation portion is the separation board, set up on the inner wall of rectangular guiding hole and be used for supplying the spout that the separation board reciprocated.
Preferably, the sliding groove is of a straight-line structure or an inverted-U-shaped structure, and when the sliding groove is of a straight-line structure, the sliding groove is arranged on the top wall of the long guide hole, and the side walls on the two sides of the blocking plate are respectively attached to the inner walls on the two sides of the long guide hole; when for the type of falling U structure, the spout sets up on the roof and the both sides lateral wall of rectangular guiding hole, just both sides lateral wall and the roof of baffler all stretch into, the laminating is in the inside of spout.
Preferably, work as the separation portion sets up when the outside of rectangular guiding hole, the separation portion is separation cloth, the top of separation cloth with the inner wall or the outer wall laminating in water storage chamber are connected, just the width of separation cloth is greater than the width of rectangular guiding hole, work as the flange whereabouts extremely when exerting pressure the chamber bottom, the tight and shutoff of separation cloth rectangular guiding hole.
Preferably, the periphery of the main water inlet is provided with an annular extension part facing the water inlet main cavity, the part of the floating body located in the water taking cavity is of a reversed-V-shaped structure, the annular extension part is plugged in the middle of the reversed-V-shaped structure, and the water permeable ports are arranged on two sides of the reversed-V-shaped structure.
The utility model discloses following beneficial effect has been gained for prior art:
1. the utility model provides a be provided with the vice chamber of intaking and the chamber of exerting pressure that is linked together outside the water intaking chamber in the bailer pipe for getting groundwater, and the body of water intaking intracavity stretches into the intracavity of exerting pressure, after the water intaking of water intaking chamber finishes, through the water lift portion of the vice intracavity of tractive water intaking, make the water of the vice intracavity of intaking all impress the intracavity of exerting pressure, and exert decurrent pressure to the body in the initiative, thereby make body shutoff main water inlet with the state that compresses tightly, thoroughly avoided because the bailer pipe is promoting the easy problem of leaking of in-process collision wall of a well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a cross-sectional view of a Beller tube for taking groundwater of the present invention;
FIG. 2 is a partial view (one) of FIG. 1 at the elongated guide hole;
FIG. 3 is a partial view (two) of the top of the pressurizing chamber and the auxiliary water inlet chamber in FIG. 1;
FIG. 4 is a partial view (III) of the bottom of the pressurizing chamber and the auxiliary water inlet chamber of FIG. 1;
FIG. 5 is a partial view (IV) of FIG. 1 at the main water inlet chamber;
wherein, 1 water intaking chamber, 2 pressure chamber, 3 auxiliary chambers of intaking, 4 bodies, 5 water storage chambeies, 7 rectangular guiding holes, 8 edges, 9 separation portion, 10 main water inlets, 11 mouth of permeating water, 12 water inlets of exerting pressure, 13 auxiliary water inlets, 14 water lift portion, 15 lifting rod, 16 haulage ropes, 17 auxiliary water inlets, 18 annular extensions.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An object of the utility model is to provide a but the body initiative of exerting pressure be used for getting the bailer pipe of groundwater to prior art's defect and not enough.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in FIGS. 1-5, the present invention provides a Bell pipe for taking groundwater, wherein the material of the Bell pipe is not limited, and can be glass pipe or other commonly used water taking materials, including a water taking cavity 1, and a pressure cavity 2 and a water inlet auxiliary cavity 3 which are arranged outside the water taking cavity 1 and are communicated with each other in sequence from inside to outside, the water taking cavity 1, the pressure cavity 2 and the water inlet auxiliary cavity 3 can be formed integrally, or can be separated by bonding or other connection methods, a floating body 4 is arranged inside the water taking cavity 1, the floating body 4 can be a light thin plate, such as a plastic plate, or other special-shaped structures, as long as the realization of the function is not affected, the floating body 4 divides the water taking cavity 1 into a water storage cavity 5 and a main cavity from top to bottom, an axial strip guide hole 7 is arranged on the water storage cavity 5, the floating body 4 is provided with a flange 8 extending into the pressure application cavity 2 through a strip guide hole 7, a blocking part 9 for blocking the strip guide hole 7 is arranged between the flange 8 and the strip guide hole 7, the outer wall of the flange 8 is attached to the inner wall of the pressure application cavity 2 and the inner wall of the strip guide hole 7, and a sealing structure is formed together through the blocking part 9 capable of moving or deforming along the strip guide hole 7; a main water inlet 10 is arranged in the center of the bottom of the water inlet main cavity, the floating body 4 is provided with a plugging part for plugging the main water inlet 10, the plugging part and the main water inlet 10 can be in plane-to-plane contact sealing, can also be in a plugging structure similar to a bottle cap and a bottle mouth, or can be in other structures capable of realizing plugging functions, and a plurality of water permeable openings 11 for communicating the water storage cavity 5 with the water inlet main cavity are arranged around the plugging part; a pressure applying water inlet 12 is arranged at the upper part of the pressure applying cavity 2, the pressure applying water inlet 12 is positioned on the side wall of the pressure applying cavity 2 connected with the water inlet auxiliary cavity 3, an auxiliary water inlet 13 is arranged on the side wall of the lower part of the water inlet auxiliary cavity 3, a water lifting part 14 is arranged inside the water inlet auxiliary cavity 3, the outer wall of the water lifting part 14 is attached to the inner wall of the water inlet auxiliary cavity 3, when the water lifting part 14 is positioned at the bottom of the water inlet auxiliary cavity 3, the upper surface of the water lifting part 14 is lower than the auxiliary water inlet 13, and when the water lifting part 14 is positioned at the top of the water inlet auxiliary cavity 3, the side wall of the water lifting part 14 can block the pressure applying water inlet 12; the water lifting part 14 extends out of the water inlet auxiliary cavity 3 through a lifting rod 15, and the tops of the lifting rod 15 and the water storage cavity 5 are respectively connected with corresponding hauling ropes 16; wherein, the common working process of the device is as follows: an operator checks the sealing performance of the device, and after the sealing performance is checked to be qualified, the lifting rod 15 is pressed downwards, so that the water lifting part 14 is positioned at the bottom of the water inlet auxiliary cavity 3; then, an operator puts the bailer tube into the underground water through a hauling rope 16 at the top of the water storage cavity 5, the underground water enters the water inlet main cavity through a main water inlet 10, so that the floating body 4 floats upwards and gradually flows into the water storage cavity 5 through a water permeable port 11 on the floating body 4, meanwhile, the underground water enters the water inlet auxiliary cavity 3 through an auxiliary water inlet 13, after a certain time, the water lifting part 14 moves in the water inlet auxiliary cavity 3 through the hauling rope 16 of the lifting rod 15, the underground water enters the pressure application cavity 2 through the pressure application water inlet 12 along with the movement of the water lifting part 14, and along with the increase of the water pressure in the pressure application cavity 2, the underground water applies pressure to the floating body 4 through a flange 8, so that the floating body 4 moves towards the bottom of the water inlet main cavity, and the plugging of the main water inlet 10 is gradually completed; according to the above, after the water taking in the water taking cavity 1 of the utility model is finished, the water-lifting part 14 in the auxiliary water-intake cavity 3 is pulled to press the water in the auxiliary water-intake cavity 3 into the pressure-applying cavity 2, and the downward pressure is actively applied to the floating body 4, so that the main water inlet 10 is sealed by the floating body 4 in a compressed state, and the problem of water leakage caused by the collision of the belleville tube on the well wall in the lifting process is thoroughly avoided.
Enough in order to guarantee the buoyancy of body 4, make body 4 float fast simultaneously, the utility model discloses well chamber 2 of exerting pressure's bottom is offered and is used for assisting the supplementary water inlet 17 of body 4 come-up.
In order to facilitate the use back, carry out water intaking work and reset work, the utility model discloses the outlet that is used for the drainage is offered at the top in the chamber of exerting pressure 2, and the intake that is used for the water intaking is offered at the top in water storage chamber 5, and outlet and intake all are provided with corresponding closing cap.
In order to guarantee that the vice chamber 3 of intaking can provide the water of exerting pressure 2 interior sufficient volumes in chamber, the utility model discloses well vice chamber 3 of intaking is the loop configuration, and the chamber 2 of exerting pressure that is provided with a plurality of equipartitions between vice chamber 3 of intaking and the water storage chamber 5 is provided with on the body 4 and exerts pressure the corresponding edge of a wing 8 in chamber 2 quantity of exerting pressure, and the edge of a wing 8 is 2 at least, and when being 2, the edge of a wing 8 set up the position symmetrical.
In order to guarantee the separation effect, the utility model discloses in when separation portion 9 sets up in the inside of rectangular guiding hole 7, separation portion 9 is the baffler, offers the spout that is used for supplying the baffler to reciprocate on rectangular guiding hole 7's the inner wall.
In order to ensure the guiding effect, the sliding chute in the utility model is of a straight line structure or an inverted U-shaped structure, when the sliding chute is of a straight line structure, the sliding chute is arranged on the top wall of the strip-shaped guiding hole 7, and the side walls at the two sides of the baffle plate are respectively attached to the inner walls at the two sides of the strip-shaped guiding hole 7; when for the type of falling U structure, the spout setting is on the roof and the both sides lateral wall of rectangular guiding hole 7, and both sides lateral wall and the roof of baffler all stretch into, laminate the inside at the spout.
As a barrier plate's a deformation structure, the utility model discloses in when separation portion 9 sets up in rectangular guiding hole 7's outside, separation portion 9 is for blocking cloth, and the top of blocking cloth is connected with the inner wall or the outer wall laminating in water storage chamber 5, and the width of blocking cloth is greater than rectangular guiding hole 7's width, and when 8 whereabouts in the edge of a wing to 2 bottoms in the chamber of exerting pressure, the rectangular guiding hole 7 of shutoff is tightened and blocked to the separation cloth.
In order to guarantee the shutoff effect, the utility model discloses well main water inlet 10's border has the annular extension 18 of the main cavity of intaking towards, and body 4 is located the part of 1 inside portions in chamber of intaking and is nearly word structure, and the middle part of nearly word structure carries out the shutoff to annular extension 18, and the both sides of nearly word structure are provided with the mouth 11 of permeating water.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the specific examples, and the explanation of the above examples is only used for helping to understand the utility model and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The Beller tube for taking underground water is characterized by comprising a water taking cavity, a pressure applying cavity and a water inlet auxiliary cavity, wherein the pressure applying cavity and the water inlet auxiliary cavity are sequentially arranged outside the water taking cavity from inside to outside and are communicated with each other, a floating body is arranged inside the water taking cavity and divides the water taking cavity into a water storage cavity and a water inlet main cavity from top to bottom, an axial long-strip-shaped guide hole is formed in the water storage cavity, a flange extending into the pressure applying cavity through the long-strip-shaped guide hole is arranged on the floating body, a blocking part used for blocking the long-strip-shaped guide hole is arranged between the flange and the long-strip-shaped guide hole, the outer wall of the flange is attached to the inner wall of the pressure applying cavity and the inner wall of the long-strip-shaped guide hole, and a sealing structure is formed by the blocking part capable of moving or deforming along the long-strip-shaped guide hole; a main water inlet is formed in the center of the bottom of the water inlet main cavity, the floating body is provided with a plugging part for plugging the main water inlet, and a plurality of water permeable openings for communicating the water storage cavity with the water inlet main cavity are formed in the periphery of the plugging part; the upper part of the pressure applying cavity is provided with a pressure applying water inlet, the pressure applying water inlet is positioned on the side wall of the pressure applying cavity connected with the water inlet auxiliary cavity, the side wall of the lower part of the water inlet auxiliary cavity is provided with an auxiliary water inlet, the inside of the water inlet auxiliary cavity is provided with a water lifting part, the outer wall of the water lifting part is attached to the inner wall of the water inlet auxiliary cavity, when the water lifting part is positioned at the bottom of the water inlet auxiliary cavity, the upper surface of the water lifting part is lower than the auxiliary water inlet, and when the water lifting part is positioned at the top of the water inlet auxiliary cavity, the side wall of the water lifting part can block the pressure applying water inlet; the water lifting part extends out of the water inlet auxiliary cavity through a lifting rod, and the tops of the lifting rod and the water storage cavity are respectively connected with corresponding traction ropes.
2. The Beller tube for extracting groundwater according to claim 1, wherein an auxiliary water inlet for assisting the floating of the floating body is opened at the bottom of the pressurizing cavity.
3. The Beller tube for extracting groundwater according to claim 2, wherein a water outlet for draining water is opened at the top of the pressurizing cavity, a water intake for taking water is opened at the top of the water storage cavity, and the water outlet and the water intake are provided with corresponding covers.
4. The Beller tube for extracting groundwater according to claim 1 or 3, wherein the auxiliary water inlet cavity is of an annular structure, a plurality of uniformly distributed pressure applying cavities are arranged between the auxiliary water inlet cavity and the water storage cavity, the floating body is provided with flanges corresponding to the pressure applying cavities in number, the number of the flanges is at least 2, and when the number of the flanges is 2, the flanges are symmetrically arranged.
5. The Beller tube for extracting groundwater according to claim 1 or 3, wherein when the blocking portion is disposed inside the long guide hole, the blocking portion is a blocking plate, and a sliding groove for allowing the blocking plate to move up and down is formed in an inner wall of the long guide hole.
6. The Beller tube for extracting groundwater according to claim 5, wherein the sliding groove is of a straight-line structure or an inverted U-shaped structure, and when the sliding groove is of a straight-line structure, the sliding groove is arranged on the top wall of the long guide hole, and the side walls of the two sides of the blocking plate are respectively attached to the inner walls of the two sides of the long guide hole; when for the type of falling U structure, the spout sets up on the roof and the both sides lateral wall of rectangular guiding hole, just both sides lateral wall and the roof of baffler all stretch into, the laminating is in the inside of spout.
7. The Beller tube for taking groundwater according to claim 1 or 3, wherein when the blocking part is arranged outside the long guide hole, the blocking part is a blocking cloth, the top of the blocking cloth is in fit connection with the inner wall or the outer wall of the water storage cavity, the width of the blocking cloth is larger than that of the long guide hole, and when the flange falls to the bottom of the pressurizing cavity, the blocking cloth is tightened and blocks the long guide hole.
8. The Beller tube for extracting groundwater according to claim 1 or 3, wherein the peripheral edge of the main water inlet is provided with an annular extension part facing the main water inlet cavity, the part of the floating body inside the water extracting cavity is of a V-shaped structure, the annular extension part is blocked by the middle part of the V-shaped structure, and the water permeable ports are arranged on two sides of the V-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017581.5U CN214149991U (en) | 2021-01-06 | 2021-01-06 | Bell pipe for taking underground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017581.5U CN214149991U (en) | 2021-01-06 | 2021-01-06 | Bell pipe for taking underground water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214149991U true CN214149991U (en) | 2021-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120017581.5U Expired - Fee Related CN214149991U (en) | 2021-01-06 | 2021-01-06 | Bell pipe for taking underground water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214149991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018642A (en) * | 2021-11-04 | 2022-02-08 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Groundwater level sampling device that decides |
-
2021
- 2021-01-06 CN CN202120017581.5U patent/CN214149991U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018642A (en) * | 2021-11-04 | 2022-02-08 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Groundwater level sampling device that decides |
| CN114018642B (en) * | 2021-11-04 | 2024-01-19 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Groundwater fixed-horizon sampling device |
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| CF01 | Termination of patent right due to non-payment of annual fee |