CN218766168U

CN218766168U - Collection system of aquatic micro-plastic

Info

Publication number: CN218766168U
Application number: CN202222794703.9U
Authority: CN
Inventors: 王芳婷; 包科; 齐信; 黄长生; 杨艳林; 顾涛; 王晓晗
Original assignee: Wuhan Geological Research Center of China Geological Survey
Current assignee: Wuhan Geological Research Center of China Geological Survey
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-28
Anticipated expiration: 2032-10-20

Abstract

The utility model provides a collection system of little plastics of aquatic, include: the two ends of the shell are respectively provided with an upper coaxial frame and a lower coaxial frame; the lower end of the main shaft is fixedly connected with the lower coaxial frame, the upper end of the main shaft penetrates through and is fixedly connected with the upper coaxial frame, and the main shaft is connected with a main rope; the movable sealing element comprises an upper horizontal clapboard, a lower horizontal clapboard and a plurality of auxiliary shafts, wherein the middle part of each auxiliary shaft penetrates through the upper coaxial frame, and the lower end of each auxiliary shaft is connected with the lower horizontal clapboard and penetrates through the lower coaxial frame; the upper end of each extension spring is fixedly connected with the upper horizontal partition plate, and the lower end of each extension spring is connected with the inner wall of the shell; and the bolt assembly comprises a bolt, a torsion spring, a movable circular ring and an auxiliary rope, an avoiding groove is formed in the main shaft and is positioned below the upper horizontal partition plate, the bolt and the torsion spring are arranged in the avoiding groove, the torsion spring is connected with the bolt, the movable circular ring is sleeved on the main shaft, and the auxiliary rope is connected with the movable circular ring. The utility model has the advantages that: can collect micro plastic in water without depth, and has stable and reliable sampling result.

Description

Collection system of aquatic micro-plastic

Technical Field

The utility model relates to a little plastics collection equipment technical field especially relates to a collection system of little plastics of aquatic.

Background

Because the micro-plastics have low abundance and small size in water, two methods of concentrating samples and sampling in large volume are generally adopted when the micro-plastics in water are collected. The concentrated sample method is a method for reducing the volume of a sample in the sampling process, and mainly comprises the following steps of collecting the sample through a trawl: 1. the sampling process needs to use a ship, the sampling cost is high, and the sample can be polluted by the ship and a towing cable; 2. the apertures of the meshes of the trawl are large, usually 112-333 mu m are different, and smaller micro plastic can be leaked through the meshes; 3. trawl method is usually used for collecting surface water sample, and the distribution of micro plastic in water depends on its density, shape, size and other properties, and the environmental conditions of water density, wind, water flow and wave, and the quantity and kind of micro plastic collected largely depends on the position and depth of sampling. If the spatial distribution characteristics of the micro-plastic in the water body are to be obtained, water samples at different depths are required to be collected respectively for analysis and test.

The large-volume sampling method refers to a method for not reducing the volume of water, and a water sample collector or a pump is generally used for collecting the water sample. The main problems of the method are as follows: 1. when the water collection amount is large, the transportation difficulty is large, and the bucket needs to be manually transferred to a laboratory; 2. when the water sampling amount is small, the covered sampling area is limited, the space distribution of the micro plastic is highly variable, and a small amount of water sample may not be representative; 3. the traditional water sample collector has a simple principle and high cost performance, but has poor sealing performance, and a small amount of water can leak after a water sample is lifted; 4. micro-plastics can be introduced into the organic glass water sampler or the water pump to pollute the sample.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve the problem that present collection aquatic micro plastic method exists, the embodiment of the utility model provides an aquatic micro plastic's collection system.

An embodiment of the utility model provides a collection system of little plastics in aquatic, include:

the two ends of the columnar shell are opened, the upper end of the columnar shell is provided with an upper coaxial frame, and the lower end of the columnar shell is provided with a lower coaxial frame;

the lower end of the main shaft is fixedly connected with the lower coaxial frame, the upper end of the main shaft penetrates through and is fixedly connected with the upper coaxial frame, and the upper end of the main shaft is also connected with a main rope;

the movable sealing piece comprises an upper horizontal partition plate, a lower horizontal partition plate and a plurality of auxiliary shafts, the lower horizontal partition plate is arranged at the lower end of the shell, the upper horizontal partition plate is arranged at the upper end of the shell, the upper end of each auxiliary shaft is connected with the upper horizontal partition plate, the middle upper part of each auxiliary shaft penetrates through the upper coaxial frame, the middle lower part of each auxiliary shaft is connected with the lower horizontal partition plate, the lower end of each auxiliary shaft penetrates through the lower coaxial frame, the upper horizontal partition plate and the lower horizontal partition plate can move up and down to plug the upper coaxial frame and the lower coaxial frame, and the middle part of the main shaft penetrates through the upper horizontal partition plate and the lower horizontal partition plate.

The upper end of each extension spring is fixedly connected with the upper horizontal partition plate, and the lower end of each extension spring is connected with the inner wall of the shell;

and the bolt assembly comprises a bolt, a torsion spring, a movable circular ring and an auxiliary rope, the main shaft is provided with an avoiding groove below the upper horizontal partition plate, the bolt and the torsion spring are arranged in the avoiding groove, the torsion spring is connected with the bolt to enable the bolt to stretch out to enable the upper horizontal partition plate to be propped, the movable circular ring is sleeved on the main shaft, the auxiliary rope is connected with the movable circular ring to pull the movable circular ring to extrude the bolt to retract the bolt, and further release the upper horizontal partition plate.

Further, the bolt is a conical block or a triangular plate.

Further, the top of bolt is equipped with the ball, the lower surface of going up horizontal baffle is equipped with the spout, the ball can along the spout slides so that the bolt retracts dodge the groove.

Furthermore, a limiting ring is arranged on the main shaft above the upper horizontal clapboard.

Furthermore, the number of the auxiliary ropes is two, and the two auxiliary ropes are respectively connected with two opposite sides of the movable circular ring.

Furthermore, the upper coaxial frame and the lower coaxial frame have the same structure and respectively comprise an inner ring, an outer ring arranged on the periphery of the inner ring and a plurality of connecting rods for connecting the inner ring and the outer ring, and sealing rings are arranged on the upper surface of the inner ring and the upper surface of the outer ring.

Furthermore, a transparent glass plate is embedded in the side wall of the shell, and scale marks are arranged on the glass plate.

Furthermore, the telescopic frame comprises a plurality of telescopic rods arranged at the bottom of the lower coaxial frame.

Further, still include concentrated subassembly, the shell be equipped with the stagnant water valve and with the outlet pipe that the stagnant water valve is connected, concentrated subassembly includes funnel cup, cartridge filter, erlenmeyer flask and vacuum pump, wherein funnel cup upper portion is used for connecing and gets the play water, the sub-unit connection of outlet pipe the cartridge filter, be equipped with the supporting network in the cartridge filter, the filter membrane has been placed on the supporting network, the lower extreme of cartridge filter is connected with the filter head, the filter head lower extreme is connected the bottleneck of erlenmeyer flask, just the vacuum pump passes through the pipe connection the filter head.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

1. the utility model discloses a collection system of little plastics of aquatic, shell and movable sealing member form the tight packing space that can gather specific degree of depth water sample to realize the sealed after the shell water intaking through bolt subassembly, can gather the little plastics of the aquatic of unnecessary degree of depth, the sampling result is reliable and stable.

2. The utility model discloses a collection system of little plastics of aquatic uses in being fit for field work, and can guarantee that collection system descends perpendicularly, and water layer error is less in adopting, can improve the accuracy of experiment greatly.

3. The utility model discloses a collection system of little plastics in aquatic can avoid using the material of plastics material to introduce little plastics in the sampling process, pollute the sample, can adopt stainless steel material simultaneously, the organic glass material of the difficult breakable and quality of quality more than present used water sampler.

4. The utility model discloses an aquatic micro plastic's collection system, concentrated subassembly can be concentrated to the filter membrane on the micro plastic in the bulky water sample at the sample scene, and the transportation is convenient, and can sieve the micro plastic through the filter membrane of different diameters on the cartridge filter setting.

Drawings

Fig. 1 is a schematic perspective view of a collection device for micro-plastic in water according to the present invention;

fig. 2 is a side view of the collection device for micro plastic in water of the present invention;

FIG. 3 is a partial schematic view of the latch assembly.

1. A main rope; 2. a secondary rope; 3. a main shaft; 4. an upper horizontal partition plate; 5. a counter shaft; 6. a seal ring; 7. an upper coaxial frame; 8. a connecting rod; 9. an extension spring; 10. a housing; 11. a glass plate; 12. a lower horizontal separator plate; 13. a lower coaxial frame; 14. a water stop valve; 15. a detachable joint; 16 water outlet pipes; 17. a telescopic rod; 18. a dust cover; 19. a funnel cup; 20. an aluminum alloy clip; 21. a filter cartridge; 22. a filter head; 23. an air outlet; 24. a conical flask; 25. a hose; 26. a vacuum pump; 27. a limiting ring; 28. a ball bearing; 29. a bolt; 30. a torsion spring; 31. a movable circular ring.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described with reference to the accompanying drawings. The following description is of the preferred embodiment of the invention in its various possible embodiments and is intended to provide a basic understanding of the invention and not to identify key or critical elements of the invention or to delineate the scope of the invention.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

In the description of the present invention, it should be noted that the present invention relates to circuits, electronic components and modules, which are prior art, and can be implemented by those skilled in the art without further elaboration, and the protection of the present invention also does not relate to the improvement of the internal structure and method.

It is further to be understood that, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, as if they were fixed or removable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, an embodiment of the present invention provides a collection device for micro plastic in water, which includes a housing 10, a main shaft 3, a movable sealing member, a plurality of stay cord springs, a latch assembly, and a concentration assembly.

Specifically, the housing 10 is cylindrical, and has a hollow interior and two open ends. The side wall of the shell 10 is embedded with a transparent glass plate 11, and the glass plate 11 is provided with scale marks. The scale marks are vertically arranged, and the water depth in the shell 10 can be observed through the scale marks.

And the upper end of the shell 10 is provided with an upper coaxial frame 7, and the lower end is provided with a lower coaxial frame 13. Specifically, the upper coaxial frame 7 and the lower coaxial frame 13 have the same structure, and each of the upper coaxial frame and the lower coaxial frame includes an inner ring, an outer ring disposed on the periphery of the inner ring, and a plurality of connecting rods 8 connecting the inner ring and the outer ring, the inner ring and the outer ring are coaxially disposed, each of the connecting rods 8 is uniformly distributed between the inner ring and the outer ring, one end of each of the connecting rods 8 is connected to the inner ring, and the other end thereof is connected to the outer ring.

The spindle 3 is arranged on the axis of the housing 10, the lower end of the spindle 3 is fixedly connected with the inner ring of the lower coaxial frame 13, and the upper end of the spindle penetrates through and is fixedly connected with the inner ring of the upper coaxial frame 7. The upper end of the main shaft 3 is further connected with a main rope 1, and the main shaft 3 can be lowered or lifted through the main rope 1 to lower or lift the lower coaxial frame 13, namely the housing 10.

The movable seal mainly comprises an upper horizontal partition 4, a lower horizontal partition 12, and a plurality of secondary shafts 5. As shown in fig. 1, the upper horizontal partition plate 4 and the lower horizontal partition plate 12 are circular plates each having a through hole in the middle, and have a diameter smaller than the inner diameter of the housing 10. The lower horizontal partition plate 12 is arranged at the lower end of the shell 10, the upper horizontal partition plate 4 is arranged at the upper end of the shell 10, the upper end of each auxiliary shaft 5 is connected with the upper horizontal partition plate 4, the middle upper part of each auxiliary shaft penetrates through the upper coaxial frame 7, the middle lower part of each auxiliary shaft penetrates through the lower horizontal partition plate 12, and the lower end of each auxiliary shaft penetrates through the lower coaxial frame 13.

It should be noted that the vertical distance between the upper horizontal partition plate 4 and the lower horizontal partition plate 12 is the same as the vertical distance between the upper coaxial frame 7 and the lower coaxial frame 13, so that the upper horizontal partition plate 4 and the lower horizontal partition plate 12 can move up and down to block the upper coaxial frame 7 and the lower coaxial frame 13 at the same time. Preferably, the upper surface of the inner ring and the upper surface of the outer ring are both provided with a sealing ring 6, so as to realize better sealing and plugging.

The middle part of the main shaft 3 penetrates through the through hole in the middle part of the upper horizontal partition plate 4 and the through hole in the middle part of the lower horizontal partition plate 12, so that the main shaft 3 and the upper horizontal partition plate 4 move separately from the lower horizontal partition plate 12.

The number of the extension springs 9 is set to be plural, and the number can be flexibly selected according to the diameter of the shell 10. In this embodiment, the number of the extension springs 9 is four, and four of the pull rope springs are uniformly distributed around the main shaft 3.

The upper end of each extension spring 9 passes over the upper coaxial frame 7 and is fixedly connected with the upper horizontal partition plate 4, and the lower end of each extension spring is connected with the inner wall of the shell 10. The extension spring 9 is obliquely arranged, and the upper end of the extension spring is close to the middle part of the upper horizontal clapboard 4.

The bolt component is used for releasing the upper horizontal partition plate 4, and sealing the upper coaxial frame 7 and the lower coaxial frame 13 at two ends of the shell 10. The bolt component mainly comprises a bolt 29, a torsion spring 30, a movable circular ring 31 and an auxiliary rope 2.

Specifically, as shown in fig. 2 and 3, the bolt 29 is a conical block or a triangular plate, an avoiding groove is formed in the spindle 3 and located below the upper horizontal partition plate 4, and the shape of the avoiding groove is matched with that of the bolt 29, so that the bolt 29 can enter and leave the avoiding groove. The bolt 29 and the torsion spring 30 are arranged in the avoidance groove, and the torsion spring 30 is connected with the bolt 29 so that the bolt 29 extends out to hold the upper horizontal partition plate 4.

The movable circular ring 31 is sleeved on the main shaft 3, the auxiliary rope 2 is connected with the movable circular ring 31, the auxiliary rope 2 can pull the movable circular ring 31 to move along the main shaft 3, and when the auxiliary rope moves to the bolt 29, the bolt 29 is extruded to retract the bolt 29, so that the upper horizontal partition plate 4 can be released.

The number of the auxiliary ropes 2 may be set to one or more. In order to ensure that the movable ring 31 is balanced as much as possible when being pulled, in this embodiment, the number of the auxiliary ropes 2 is two, and the two auxiliary ropes 2 are respectively connected to two opposite sides of the movable ring 31 and located at two ends of a diameter of the movable ring 31.

Preferably, the top of bolt 29 is equipped with ball 28, the lower surface of last horizontal partition plate 4 is equipped with the spout, ball 28 can slide along the spout so that bolt 29 retracts dodge the groove, guarantees like this that bolt 29 can accurately retract dodge the groove.

And a limiting ring 27 can be further arranged on the main shaft 3 above the upper horizontal partition plate 4, the outer diameter of the limiting ring 27 is larger than the inner diameter of the movable ring 31, the auxiliary rope 2 pulls the movable ring 31 to release the upper horizontal partition plate 4 and then continues to move along the main shaft 3, and the limiting ring 27 blocks the movable ring 31 to move, so that the movable ring 31 is prevented from falling off.

In addition, a plurality of telescopic rods 17 are arranged at the bottom of the lower coaxial frame 13, the telescopic rods 17 are contracted to be shortest before the shell 10 is ready to be lowered into water, and are extended when the shell 10 is used for collecting water and taken out to the ground, so that the bottom of the shell 10 is away from the bottom surface by a certain distance, and the water collected in the shell 10 is conveniently concentrated by the bottom of the shell 10.

The concentration component is used for collecting micro-plastics of the water collected in the shell. The concentration assembly includes a funnel cup 19, a filter cartridge 21, a conical flask 24, and a vacuum pump 26.

Specifically, as shown in fig. 1, the housing 10 is provided with a water stop valve 14 and a water outlet pipe, the water stop valve 14 is specifically installed on the inner ring of the lower coaxial frame 13, the water stop valve 14 is connected with a detachable joint 15, and the water outlet pipe is connected through the detachable joint 15.

The upper part of the funnel cup 19 is used for receiving the water outlet of the water outlet pipe, and the lower part of the funnel cup is connected with the filter cylinder 21. The upper part of the funnel cup 19 is provided with a dustproof cover 18. The filter cartridges 21 can be arranged in a plurality according to experimental requirements, and the plurality of filter cartridges 21 are sequentially connected through the aluminum alloy clips 20. The filter cartridge 21 is internally provided with a support net, filter membranes are placed on the support net, and the filter membranes with different specifications can be placed according to experiment requirements.

The bottle opening of the conical bottle 24 is connected with the lower end of the filter cylinder 21, and the vacuum pump 26 is connected with the bottle opening of the conical bottle 24 through a pipeline. Specifically, the lower end of the filter cartridge 21 at the lowest part is connected with a filter head 22, the filter head 22 is a three-stage stepped pipe, wherein the diameter of the middle part is small, and the diameters of the upper end and the lower end are large. The lower end of the filter head 22 is sleeved on the mouth of the conical flask 24 for sealing connection. Vacuum pump 26 is oil-free vacuum pump 26, filter head 22 lower extreme lateral wall is equipped with venthole 23, vacuum pump 26 passes through the hose 25 and connects venthole 23. Negative pressure is formed at the opening of the conical flask 24 through the vacuum pump 26, so that water flows into the conical flask 24, and micro plastic is filtered by the filter membrane.

It should be noted that, as for the material for manufacturing the collecting device, except that the glass plate 11 is made of glass material, other components are made of metal material, such as stainless steel material, so that the use of plastic material can be avoided, and the introduction of micro plastic in the sampling process and the contamination of the sample can be avoided.

In addition, as shown in fig. 1 and 2, the embodiment of the present invention further provides a method for collecting micro plastic based on the above device for collecting micro plastic in water, which mainly includes the following steps:

s1, placing the collecting device in water, releasing the main rope 1, enabling the shell 10 to descend to a preset height, enabling the extension spring 9 to be in an extension state, enabling the upper horizontal partition plate 4 to be blocked by the bolt 29, and enabling water to enter the shell 10 from a position between the upper horizontal partition plate 4 and the upper coaxial frame 7;

s2, after the shell 10 is filled with water, the auxiliary rope 2 is pulled upwards to enable the bolt 29 to retract into the avoiding groove,

releasing the upper horizontal partition plate 4, moving the upper horizontal partition plate 4 downwards under the action of the extension spring 9 until the upper horizontal partition plate 4 covers the upper coaxial frame 7 to seal the upper port of the shell 10 and the lower horizontal partition plate 12 covers the lower coaxial frame 13 to seal the lower port of the shell 10, so as to form a sealed space;

s3, lifting the main rope 1, taking the collecting device out of water, filtering the water in the shell 10 through the concentration assembly, and collecting the micro plastic filtered on the filter membrane in the filter cartridge 21.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It should be understood that they are relative concepts, which may be varied in relation to their use and placement, and that the use of directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a collection system of aquatic little plastics which characterized in that includes:

the movable sealing element comprises an upper horizontal partition plate, a lower horizontal partition plate and a plurality of auxiliary shafts, the lower horizontal partition plate is arranged at the lower end of the shell, the upper horizontal partition plate is arranged at the upper end of the shell, the upper end of each auxiliary shaft is connected with the upper horizontal partition plate, the middle upper part of each auxiliary shaft penetrates through the upper coaxial frame, the middle lower part of each auxiliary shaft is connected with the lower horizontal partition plate, the lower end of each auxiliary shaft penetrates through the lower coaxial frame, so that the upper horizontal partition plate and the lower horizontal partition plate can move up and down to plug the upper coaxial frame and the lower coaxial frame, and the middle part of each main shaft penetrates through the upper horizontal partition plate and the lower horizontal partition plate;

2. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: the bolt is a conical block or a triangular plate.

3. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: the top of bolt is equipped with the ball, the lower surface of going up horizontal baffle is equipped with the spout, the ball can along the spout slides so that the bolt retracts dodge the groove.

4. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: and a limiting ring is arranged on the main shaft above the upper horizontal clapboard.

5. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: the number of the auxiliary ropes is two, and the two auxiliary ropes are respectively connected with two opposite sides of the movable circular ring.

6. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: the upper coaxial frame and the lower coaxial frame are identical in structure and respectively comprise an inner ring, an outer ring arranged on the periphery of the inner ring and a plurality of connecting rods for connecting the inner ring and the outer ring, and sealing rings are arranged on the upper surface of the inner ring and the upper surface of the outer ring.

7. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: the side wall of the shell is embedded with a transparent glass plate, and the glass plate is provided with scale marks.

8. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: comprises a plurality of telescopic rods arranged at the bottom of the lower coaxial frame.

9. The device for collecting the micro-plastic in the water as claimed in claim 1, wherein: still include concentrated subassembly, the shell be equipped with the stagnant water valve and with the outlet pipe that the stagnant water valve is connected, concentrated subassembly includes funnel cup, cartridge filter, erlenmeyer flask and vacuum pump, wherein funnel cup upper portion is used for connecing to get the play water, the sub-unit connection of outlet pipe the cartridge filter, be equipped with the supporting network in the cartridge filter, the filter membrane has been placed on the supporting network, the lower extreme of cartridge filter is connected with the filter head, the filter head lower extreme is connected the bottleneck of erlenmeyer flask, just the vacuum pump passes through the pipe connection the filter head.