CN113559948B - Liquid transfer device for environment monitoring analysis - Google Patents
Liquid transfer device for environment monitoring analysis Download PDFInfo
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- CN113559948B CN113559948B CN202111004212.3A CN202111004212A CN113559948B CN 113559948 B CN113559948 B CN 113559948B CN 202111004212 A CN202111004212 A CN 202111004212A CN 113559948 B CN113559948 B CN 113559948B
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- container body
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- environmental monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/56—Labware specially adapted for transferring fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/04—Closures and closing means
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a liquid transfer device for environmental monitoring and analysis, which comprises a container body for containing sampling liquid, wherein the top of the container body is detachably connected with a fitting cylinder, the top of the fitting cylinder is fixedly connected with a cover with a diameter larger than that of the container body, the inner wall of the container body is fixedly connected with a volume sealing plate in a sealing manner, the volume sealing plate is divided into an upper plate and a lower plate, and the upper plate and the lower plate are internally provided with coaxial liquid taking holes. This liquid-transfering device for environmental monitoring analysis, extend the bottom of the container body to the waters that need the sample, water gets into the container body through getting the liquid hole on the hypoplastron in, upwards stimulate the lifting rod again, the lifting rod drives sealed T stopper and moves up and insert and get downthehole shutoff of carrying on the liquid to it, the upper plate this moment, the lateral wall of the hypoplastron and the container body constitutes a sealed space, and then make the sample liquid store in this space, remove the container body afterwards and can accomplish the liquid-transfering task, it is very convenient to use, the quality of water of the different degree of depth of still can taking a sample, use more nimble to different waters.
Description
Technical Field
The invention relates to the technical field of environmental management, in particular to a liquid transferring device for environmental monitoring and analysis.
Background
The utilization of water environment plays an increasingly important role in the existing economic development, so that the water environment treatment is increasingly important, and in order to effectively and efficiently treat the water environment, the monitoring and analysis of the water environment before treatment are extremely important.
However, the prior liquid-transfering device is inconvenient to operate during sampling, has poor pertinence, cannot meet water areas with different depths, has poor sealing performance, and impurities in the external environment easily enter the device in the moving process, so that liquid components in the device are changed to a certain degree, the final inspection result is influenced, and the treatment process cannot always achieve the expected effect.
For this reason, it is necessary to design a pipette device for environmental monitoring analysis so as to solve the problems set forth above.
Disclosure of Invention
The present invention is directed to a pipette device for environmental monitoring and analysis, which solves the problems of the background art mentioned above.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a liquid-transfering device for environmental monitoring analysis, is including the container body that is used for splendid attire sampling liquid, the top detachable connection of the container body has agrees with a section of thick bamboo, and agrees with the lid that the top fixedly connected with of a section of thick bamboo is big rather than its diameter, the sealed fixedly connected with volume shrouding of the inner wall of the container body, and the volume shrouding divide into upper plate and hypoplastron, coaxial liquid hole of getting has all been seted up in upper plate and the hypoplastron, it has the lifting rod to get the downthehole activity of liquid and run through, and the top of lifting rod runs through the perforation on the lid and extend to the container body outside, the lifting rod is located two of the part fixedly connected with of the container body and gets the sealed T stopper of liquid hole looks adaptation, and two sealed T stoppers are located two respectively and get under the liquid hole, the bottom fixed mounting of the container body has the accent hole base.
Preferably, one end of the lifting rod, which is positioned outside the container body, is fixedly connected with a hook ring, and a rope is tied on the hook ring.
Preferably, the bottom of accent hole base is removable installs the filtration screen panel, transfer the hole base to communicate with each other for hollow tube-shape and with the container body, and transfers to inlay in the hole base and have built-in half fender, the side of built-in half fender has been seted up and has been accomodate the chamber, and accomodate intracavity seal slidable mounting and have the sealed board that opens and shuts, transfer the closed axle that runs through built-in half fender is installed to the rotation of hole base, and the closed axle is located the part fixed connection who accomodates the intracavity and opens and shuts the sealed board, the side-mounting area of accent hole base removes closed axle pivoted adjustment mechanism.
Preferably, the adjusting mechanism comprises an external twisting block, a first bevel gear and a second bevel gear, the external twisting block is rotatably installed on the hole adjusting base and is close to the built-in half gear, the first bevel gear is fixedly connected to the bottom of the closing shaft, the second bevel gear is fixedly connected to one end, close to the built-in half gear, of the external twisting block, the first bevel gear is meshed with the second bevel gear, and the surface of the external twisting block is arranged in a rough mode.
Preferably, the edge at filter screen panel top has inlayed the stationary ring frame, and the stationary ring frame passes through locking screw to be connected in the bottom of transferring the hole base, still having cushioned the packing ring between stationary ring frame and the accent hole base, and the thickness value of packing ring is the same with the aperture value of filtering the screen panel.
Preferably, both sides face of the container body is fixedly connected with an outer frame, and a limiting balance frame is movably arranged on the outer frame through a pin shaft.
Preferably, the limiting balance frame is provided with a through hole, the top end of the lifting rod movably penetrates through the through hole, and the diameter of the through hole is larger than that of the shackle.
Preferably, the unsettled overhead axle that is connected with in inside of agreeing with a section of thick bamboo, and the both ends of overhead axle all overlap and have the cover spring that resets, the one end fixed connection of the cover spring that resets is epaxial in the overhead, and the other end fixedly connected with slider of the cover spring that resets, the both sides of agreeing with a section of thick bamboo all offer rather than communicating rail groove, and slider slidable mounting has in the rail groove, one side fixedly connected with arc that the slider kept away from the cover spring that resets is protruding, the screens groove has been seted up to the entry inner wall of the container body, and the protruding one end of keeping away from the slider of arc is pegged graft in the screens inslot.
Preferably, the surface of the arc protrusion is set smoothly, and the arc protrusion is connected in the rail groove in a sliding mode.
Compared with the prior art, the invention has the beneficial effects that:
(1) This environmental monitoring analysis is with moving liquid device, extend the bottom of the container body to the waters that need the sample in, water gets into the container body through getting the liquid hole on the hypoplastron in, upwards stimulate the lifting rod again, the lifting rod drives sealed T stopper and moves up and insert and get downthehole shutoff of carrying out the liquid to it, the lateral wall of the upper plate this moment, hypoplastron and the container body constitutes a sealed space, and then make the sample liquid store in this space, move the container body afterwards and can accomplish the task of moving the liquid, it is very convenient to use.
(2) This environmental monitoring analysis is with moving liquid device, and the quality of water of the different degree of depth of still can taking a sample, be a rope system on spacing balanced frame before the sample, another rope system is on the shackle, put the container body gradually in the waters through the rope on the spacing balanced frame of release, the synchronous gradual release of rope on the shackle this moment, but this rope is not received the pulling force, sealed T stopper in advance blocks when avoiding the sample and gets the liquid hole and lead to the sample failure, the container body is at the in-process that moves down, water loops through two and gets the liquid hole and perforate and flow, the container body descends to the appointed degree of depth and to lifting the rope on the shackle and can accomplish the sample in this layer waters, use more in a flexible way to different waters.
(3) This environmental monitoring analysis is with moving liquid device, when not using the container body or move the liquid, because sealed T stopper shutoff gets the liquid hole, the piece is turned round outward in the rotation, it drives first bevel gear rotation through second bevel gear to make the piece turn round outward, and then make closed axle drive the sealed board swing of opening and shutting, the sealed board roll-off that opens and shuts is accomodate the chamber and is sealed other half in the accent hole base, built-in half this moment keeps off and seals half of accent hole base, and then guarantee the internal sealed state of trend of container, avoid external impurity to get into its inside and influence the analysis of quality of water, improve the stoste quality of sampling liquid, and then improve the accuracy nature of monitoring.
(4) This environmental monitoring analysis is with moving liquid device, when upwards pulling the lid during getting liquid, make the lid drive agree with a section of thick bamboo and shift up, the arc is protruding breaks away from the screens groove under its effect this moment, and the cover spring that resets is compressed, make the protruding shrink of arc advance the rail inslot, can remove the lid promptly, so that subsequent empting gets liquid, and when installing the lid, only need with the lid insert the entry of the container body can, make the arc protruding peg graft in the screens inslot again under the spring action of the cover spring that resets, the dismouting is very convenient, need not with the help of instrument auxiliary use, the practicality has greatly been promoted.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of a structural container body of the present invention;
FIG. 3 is a schematic view of the interior of a container body of a construction of the present invention in another state;
FIG. 4 is an exploded view of the connection between the base and the filter screen according to the present invention;
FIG. 5 is a schematic view of the connection between the closing shaft and the external torsion block according to the present invention;
FIG. 6 is a perspective view of the structure of the present invention after the closure panel is opened;
FIG. 7 is a perspective view of the structure of the present invention with the opening/closing dense plate removed from the hole-adjusting base;
FIG. 8 is a cross-sectional view of a structural engagement cartridge of the present invention;
FIG. 9 is an enlarged view of portion A of FIG. 8 in accordance with the present invention;
fig. 10 is an exploded view of the connection of the container body and the engagement cylinder according to the present invention.
In the figure: 1. a container body; 2. a fitting cylinder; 3. a cover; 4. a volume closing plate; 5. a liquid extraction hole; 6. lifting a pull rod; 61. a shackle; 7. sealing the T plug; 8. a hole adjusting base; 9. a filtering net cover; 10. a half gear is arranged inside; 101. a receiving cavity; 11. a closing shaft; 12. opening and closing the sealing plate; 13. an external twisting block; 14. a first bevel gear; 15. a second bevel gear; 16. fixing the ring frame; 17. a gasket; 18. locking the screw; 19. an outer frame; 20. a pin shaft; 21. a limiting balance frame; 22. an overhead shaft; 23. resetting the spring; 24. a slider; 25. a rail groove; 26. arc convex; 27. screens groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides the following embodiments:
example one
The utility model provides a liquid-transfering device for environmental monitoring analysis, including the container body 1 that is used for splendid attire sample liquid, the top detachable connection of the container body 1 agrees with a section of thick bamboo 2, and the top fixedly connected with of agreeing with a section of thick bamboo 2 is than the big lid 3 of its diameter, the sealed fixedly connected with volume shrouding 4 of the inner wall of the container body 1, and volume shrouding 4 divide into upper plate and hypoplastron, coaxial liquid taking hole 5 has all been seted up in upper plate and the hypoplastron, liquid taking hole 5 internalization has penetrated lifting rod 6, and the top of lifting rod 6 runs through the perforation on the lid 3 and extends to the container body 1 outside, lifting rod 6 is located two sealed T stopper 7 with 5 looks adaptations of liquid taking hole of the part fixedly connected with of the container body 1, and two sealed T stoppers 7 are located two liquid taking holes 5 respectively under, the bottom fixed mounting of the container body of 1 has accent hole base 8.
One end of the lifting rod 6 positioned outside the container body 1 is fixedly connected with a shackle 61, and a rope is tied on the shackle 61. Two side surfaces of the container body 1 are fixedly connected with outer frames 19, and limiting balance frames 21 are movably arranged on the outer frames 19 through pin shafts 20. The through hole has been seted up on spacing balanced frame 21, and the top activity of lifting rod 6 runs through the through hole, and the diameter ratio of through hole is big than the diameter of shackle 61, conveniently lifts the container body 1, moreover so that subsequent dumping tapping.
The specific implementation manner of this embodiment is: the bottom of the container body 1 is extended to a water area needing sampling, water enters the container body 1 through the liquid taking hole 5 on the lower plate, the lifting rod 6 is pulled upwards, the lifting rod 6 drives the sealing T plug 7 to move upwards and is inserted into the liquid taking hole 5 to block the liquid taking hole, the side walls of the upper plate, the lower plate and the container body 1 form a sealed space at the moment, then the sampling liquid is stored in the space, the liquid taking task can be completed by moving the container body afterwards, and the use is very convenient;
and the quality of water of the different degree of depth of still can taking a sample, be tied a rope on spacing balanced frame 21 before the sample, another rope is tied on shackle 61, rope through releasing on the spacing balanced frame 21 puts the container body 1 in the waters gradually, the synchronous gradual release of rope on the shackle 61 this moment, but this rope does not receive the pulling force, sealed T stopper 7 blocks in advance when avoiding taking a sample and gets liquid hole 5 and lead to the sample failure, container body 1 is at the in-process that moves down, water loops through two and gets liquid hole 5 and perforation and flows, the container body 1 descends to the appointed degree of depth after the rope on the upwards lifting shackle 61 can accomplish the sample in this layer waters, use more in a flexible way to different waters.
Example two
The difference from the first embodiment is that the following is also included;
the bottom of accent hole base 8 is removable installs filter screen panel 9, accent hole base 8 is hollow tube-shape and communicates with each other with the container body 1, and it has built-in half fender 10 to inlay in the accent hole base 8, the side of built-in half fender 10 has been seted up and has been accomodate chamber 101, and accomodate chamber 101 internal seal slidable mounting has the sealed board 12 that opens and shuts, it installs the closed axle 11 that runs through built-in half fender 10 to transfer the internal rotation of hole base 8, and closed axle 11 is located the part fixed connection sealed board 12 that opens and shuts of accomodating the chamber 101, the side-mounting area of accent hole base 8 goes closed axle 11 pivoted adjustment mechanism.
The adjusting mechanism comprises an external twisting block 13, a first bevel gear 14 and a second bevel gear 15, the external twisting block 13 is rotatably installed on the adjusting hole base 8 and is close to the built-in half-stop 10, the first bevel gear 14 is fixedly connected to the bottom of the closing shaft 11, the second bevel gear 15 is fixedly connected to one end, close to the built-in half-stop 10, of the external twisting block 13, the first bevel gear 14 is meshed with the second bevel gear 15, and the surface of the external twisting block 13 is arranged roughly.
The edge at filter screen panel 9 top has inlayed fixed ring frame 16, and fixed ring frame 16 passes through locking screw 18 to be connected in the bottom of transferring hole base 8, still has cushioned packing ring 17 between fixed ring frame 16 and the transfer hole base 8, and the thickness value of packing ring 17 is the same with the aperture value of filtering screen panel 9, and filter screen panel 9's dismouting is comparatively convenient, and filter screen panel 9 carries out the separation to the large granule impurity in the waters, avoids getting liquid hole 5 to take place to block up.
In this embodiment: when not using the container body 1 or move the liquid, because sealed T stopper 7 shutoff gets liquid hole 5, turn round piece 13 outward in the rotation, make piece 13 turn round outward and drive first conical gear 14 through second conical gear 15 and rotate, and then make the close axle 11 drive the swing of the sealed board 12 that opens and shuts, the sealed board 12 roll-off that opens and shuts is accomodate chamber 101 and is sealed to second half in the hole adjusting base 8, built-in half 10 that keep off seals the half of hole adjusting base 8 this moment, and then guarantee the interior sealed state of trend of container body 1, avoid external impurity to get into inside and influence the detection and analysis of quality of water, improve the stoste quality of the liquid of taking a sample, and then improve the accuracy nature of monitoring.
EXAMPLE III
The difference from the second embodiment is that the following is also included;
the inside unsettled overhead shaft 22 that is connected with of agreeing with a section of thick bamboo 2, and the both ends of overhead shaft 22 all overlap and have reset cover spring 23, the one end fixed connection of reset cover spring 23 is on overhead shaft 22, and the other end fixedly connected with slider 24 of reset cover spring 23, agree with a section of thick bamboo 2 both sides and all seted up rather than communicating rail groove 25, and slider 24 slidable mounting has in rail groove 25, slider 24 keeps away from one side fixedly connected with arc protruding 26 of reset cover spring 23, screens groove 27 has been seted up to the entry inner wall of the container body 1, and the one end that slider 24 was kept away from to arc protruding 26 is pegged graft in screens groove 27.
The surface of the arc projection 26 is smoothly set, and the arc projection 26 is slidably attached in the rail groove 25.
In this embodiment: when getting liquid, upwards pulling cover 3, make cover 3 drive to agree with 2 on the section of thick bamboo and move, protruding 26 of arc breaks away from screens groove 27 under its effect this moment, and reset cover spring 23 is compressed, make protruding 26 shrink of arc advance in the rail groove 25, can dismantle cover 3, so that subsequent toppling over gets liquid, and when installing cover 3, only need cover 3 insert the entry of container body 1 can, make protruding 26 of arc peg graft in screens groove 27 once more under the spring action of reset cover spring 23, the dismouting is very convenient, need not with the help of instrument auxiliary use, greatly promoted the practicality.
Those not described in detail in this specification are within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides an environmental monitoring analysis is with liquid-transfering device, includes the container body (1) that is used for splendid attire sample liquid, its characterized in that: the top detachable connection of the container body (1) agrees with a section of thick bamboo (2), and the top fixedly connected with of agreeing with a section of thick bamboo (2) than lid (3) that its diameter is big, the sealed fixedly connected with volume shrouding (4) of inner wall of the container body (1), and volume shrouding (4) divide into upper plate and hypoplastron, coaxial liquid hole (5) of getting has all been seted up in upper plate and the hypoplastron, it has draw-bar (6) to get liquid hole (5) internalization through, and the top of draw-bar (6) runs through the perforation on lid (3) and extends to the container body (1) outside, the part fixedly connected with of draw-bar (6) that is located container body (1) is two with sealed T stopper (7) of getting liquid hole (5) looks adaptation, and two sealed T stopper (7) are located two and get liquid hole (5) respectively under, the bottom fixed mounting of container body (1) has accent hole base (8), filtration screen panel (9) is installed to the bottom of accent hole base (8) and with the container body (1), the closed side face of taking is inlayed and is equipped with the built-in the internal rotation and the closed fender hole (10) is equipped with the built-in the filtration screen panel (10), and the closed side face of the built-in the closed base (10) is inlayed and is equipped with the closed fender (10), and is opened and closed (10) is opened and closed 11 And the closed shaft (11) is positioned on a part of the opening and closing sealing plate (12) fixedly connected in the containing cavity (101), the side surface of the hole adjusting base (8) is provided with an adjusting mechanism for rotating the closed shaft (11), the adjusting mechanism comprises an outer twisting block (13), a first bevel gear (14) and a second bevel gear (15), the outer twisting block (13) is rotatably arranged on the hole adjusting base (8) and is close to a built-in half gear (10), the first bevel gear (14) is fixedly connected to the bottom of the closed shaft (11), the second bevel gear (15) is fixedly connected to one end, close to the built-in half gear (10), of the outer twisting block (13), the first bevel gear (14) is meshed with the second bevel gear (15), and the surface of the outer twisting block (13) is arranged roughly.
2. The pipette device for environmental monitoring analysis according to claim 1, wherein: one end of the lifting rod (6) positioned outside the container body (1) is fixedly connected with a shackle (61), and a rope is tied on the shackle (61).
3. The pipette device for environmental monitoring analysis according to claim 1, wherein: filter the edge at screen panel (9) top and inlayed retaining ring frame (16), and retaining ring frame (16) are connected in the bottom of transferring hole base (8) through locking screw (18), retaining ring frame (16) and transfer and still filled up packing ring (17) between hole base (8), and the thickness value of packing ring (17) is the same with the aperture value of filtering screen panel (9).
4. The pipette device for environmental monitoring analysis according to claim 2, wherein: both sides face of the container body (1) is fixedly connected with an outer frame (19), and a limiting balance frame (21) is movably arranged on the outer frame (19) through a pin shaft (20).
5. The pipette device for environmental monitoring analysis according to claim 4, wherein: the limiting balance frame (21) is provided with a through hole, the top end of the lifting rod (6) movably penetrates through the through hole, and the diameter of the through hole is larger than that of the shackle (61).
6. The pipette device for environmental monitoring analysis according to claim 1, wherein: the utility model discloses a reset sleeve spring, including a container body (1), a container body, a slider (23), a clamping groove (27), and arc protruding (26), the inside unsettled overhead axle (22) that is connected with of agreeing with a section of thick bamboo (2), and the both ends of overhead axle (22) all overlap and have reset set spring (23), the one end fixed connection of set spring (23) that resets is on overhead axle (22), and other end fixedly connected with slider (24) of set spring (23) that resets, rather than communicating rail groove (25) have all been seted up to the both sides of agreeing with a section of thick bamboo (2), and slider (24) slidable mounting has in rail groove (25), one side fixedly connected with arc protruding (26) of set spring (23) that resets are kept away from in slider (24), clamping groove (27) have been seted up to the entry inner wall of the container body (1), and the one end that slider (24) were kept away from in clamping groove (27) is pegged graft to arc protruding (26).
7. The pipette device for environmental monitoring analysis according to claim 6, wherein: the surface of the arc protrusion (26) is set smoothly, and the arc protrusion (26) is connected in the rail groove (25) in a sliding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111004212.3A CN113559948B (en) | 2021-08-30 | 2021-08-30 | Liquid transfer device for environment monitoring analysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111004212.3A CN113559948B (en) | 2021-08-30 | 2021-08-30 | Liquid transfer device for environment monitoring analysis |
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| CN113559948B true CN113559948B (en) | 2023-04-18 |
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| CH705468A1 (en) * | 2011-09-06 | 2013-03-15 | Tecan Trading Ag | Chamber system and sample containers with inlet. |
| CN211856021U (en) * | 2020-04-08 | 2020-11-03 | 厦门钨业股份有限公司 | Feed liquid sampler |
| CN211954849U (en) * | 2020-05-12 | 2020-11-17 | 秦青青 | Environmental monitoring deep water sampler |
| CN112985894A (en) * | 2019-12-02 | 2021-06-18 | 华北水利水电大学 | Surface water sampling device's sampler |
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| CH709307A1 (en) * | 2014-02-26 | 2015-08-28 | Tecan Trading Ag | Transport tool for transporting a laboratory article. |
| CN209927517U (en) * | 2019-04-07 | 2020-01-10 | 吉林佰立方环境工程有限公司 | Sewage sampling device |
| CN212126368U (en) * | 2020-04-11 | 2020-12-11 | 明建青 | Split type safe sharp instrument box |
| CN212748403U (en) * | 2020-05-26 | 2021-03-19 | 茂名环星新材料股份有限公司 | Sectional type liquid sampler |
| CN212568092U (en) * | 2020-07-16 | 2021-02-19 | 嘉泰工程技术有限公司 | Water quality sampling device for environmental safety evaluation |
| CN213580249U (en) * | 2020-09-29 | 2021-06-29 | 深圳市朗格瑞实业发展有限公司 | Water quality sampler for environmental monitoring |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH705468A1 (en) * | 2011-09-06 | 2013-03-15 | Tecan Trading Ag | Chamber system and sample containers with inlet. |
| CN112985894A (en) * | 2019-12-02 | 2021-06-18 | 华北水利水电大学 | Surface water sampling device's sampler |
| CN211856021U (en) * | 2020-04-08 | 2020-11-03 | 厦门钨业股份有限公司 | Feed liquid sampler |
| CN211954849U (en) * | 2020-05-12 | 2020-11-17 | 秦青青 | Environmental monitoring deep water sampler |
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