CN116202814B

CN116202814B - Water oil sampler

Info

Publication number: CN116202814B
Application number: CN202211663012.3A
Authority: CN
Inventors: 姜达胜; 沈云; 张娜; 卢春全; 明翠香
Original assignee: Kunshan Aogeri Environmental Technology Co ltd
Current assignee: Kunshan Aogeri Environmental Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-12-08
Anticipated expiration: 2042-12-23
Also published as: CN116202814A

Abstract

The application relates to an oil sampler for water and oil, which is applied to the field of oily sewage sampling. It includes body, collection oil subassembly and mark subassembly, its characterized in that: the outer bottom wall of the bottle body is provided with a containing groove along the circumferential direction of the bottle body, the oil collecting assembly is arranged in the containing groove and moves back and forth in the containing groove, the end part of the oil collecting assembly extends out of the containing groove to contact with a water sample, the inner wall of the containing groove is provided with a water inlet hole, and the oil collecting assembly closes or opens the water inlet hole when moving in the through hole; the marking component is arranged in the bottle body and moves back and forth along the axis direction of the bottle body, a perforation for the marking component to pass through is arranged at the top of the bottle body, and the marking component passes through the perforation and extends outwards. The application has the effect that the oil content of the water sample in the collection process is closer to the real state, so that the subsequent detection result is more accurate.

Description

Water oil sampler

Technical Field

The application relates to the field of oil sewage sampling, in particular to a water quality oil sampler.

Background

With the widespread use of petroleum, oil pollution on water surfaces, particularly on channel water, is becoming serious. Along with river management and the like, the detection requirements for oil pollutants in river water samples are increased greatly. The existing detection method generally comprises the steps of collecting water samples in a river channel through a sampler and then sending the collected water samples to a laboratory for detection. In the oil pollution process, an oil film is formed on the water surface, and the oil film is in a liquid state at normal temperature, so that the sampler can be directly fed into the water for sampling from bottom to top. And when the temperature is lower, an oil film with one side solid film property can be formed above the water surface due to low temperature, and at the moment, if the sampler is put under water, the oil film on the water surface can be damaged, and the content of oil in a finally collected water sample is inaccurate, so that the final detection result is influenced.

In the related art, a common sampler is to directly put the sampler into water for quantitative sampling. The sampler is composed of a top cover, a bottom cover and a barrel body, wherein the bottom cover is heavier than the top cover. When underwater, the top cover is pulled down by the bottom cover, so that water can enter the barrel body from the bottom, the pull rope is pulled by the to-be-sampled completion pull rope, the bottom cover contacts with the barrel body and seals the bottom of the barrel body, the pull rope is pulled continuously, the bottom cover pushes the barrel body to contact with the top cover and close, and a sealed space for storing water samples is formed.

With respect to the related art in the above, the inventors found that there are the following drawbacks: when the sampler enters the water body, an oil film on the surface layer of the water body can be damaged by the bottom cover. If the temperature is lower, when the oil film forms a solid, the oil film can be scattered by the bottom cover, so that the collected water sample is inconsistent with the actual pollution condition of the water body, and the subsequent detection treatment effect is affected.

Disclosure of Invention

In order to solve the problem that the collected water sample is inconsistent with the actual water pollution, the application provides the water oil sampler.

The application provides an aqueous oil sampler, which adopts the following technical scheme:

the utility model provides a quality of water oil sampler, includes body, collection oil subassembly and the mark subassembly that is used for gathering the water sample, the outer bottom wall of body is equipped with the storage tank along the circumference of body, collection oil subassembly is arranged in the storage tank and in the reciprocating motion of storage tank, collection oil subassembly's tip stretches out the storage tank contacts with the water sample, be equipped with the inlet opening on the inner wall of storage tank, collection oil subassembly is by the pressure drive of water sample when moving in the storage tank open the inlet opening;

the bottle body is characterized in that the marking component is arranged in the bottle body and moves back and forth along the axis direction of the bottle body, a through hole for the marking component to pass through is formed in the top of the bottle body, the marking component passes through the through hole to extend outwards, and a water sample entering the bottle body drives the marking component to move towards the top of the bottle body and pass through the through hole.

Through adopting above-mentioned technical scheme, with the direct throwing into of body in water when needs sample, collection oil assembly is at first with the surface of water contact for the oil film that surface of water congeals is with collection oil assembly contact, hangs on collection oil assembly, collection oil assembly is promoted afterwards, water sample collection is carried out in the body to rivers, and in collection process because the impact force of rivers can take the oil film on the collection oil assembly into the body and mix with the water sample, and along with the dead weight grow of body, the deepening of sampling depth for the mark subassembly is supported by the water in the body and pushes away from the perforation and stretch out, along with the water in the body is more and more, the mark subassembly stretches out more from the perforation in the perforation, until the sampling is finished, mark subassembly stops rising. When sampling, the oil film in a solid state is adhered to the oil collecting assembly, and the oil film can be mixed with a water sample in the collecting process, so that the oil content of the water sample is closer to the real state, and the subsequent detection result is more accurate.

Optionally, the bottom of storage tank to the inside arch of body forms spacing platform, spacing platform is arranged in on the interior diapire of body and be higher than interior bottom wall, the inner wall of storage tank with the body is inside to be communicated through the inlet opening, spacing platform is used for the butt mark subassembly.

Through adopting above-mentioned technical scheme, under the initial state, mark subassembly butt has the clearance on spacing bench, with the bottom of body between, after the body is thrown into water, subsides along with the body, and water gets into through the inlet opening, gets into along with the sampling process at first, and the water sample fills the clearance to with mark subassembly outwards ejecting, make mark subassembly rise, play the marking effect.

Optionally, the oil collecting assembly includes promotes the piston and collects the oil board, promote the piston arrange in the storage tank and with the lateral wall of storage tank is butt each other, the oil board is fixed promote the piston and stretch out the notch of storage tank and with the water sample contact, the water sample flows into between spacing platform and the interior bottom wall of body through the inlet opening.

Through adopting above-mentioned technical scheme, the oil collecting plate is outstanding in the bottom of body under the initial condition, after throwing into water, the oil collecting plate at first contacts with the surface of water, breaks the oil film on surface and adheres to the oil collecting plate, and the body is gone into water afterwards, and along with the water pressure grow, promotes the piston by water pressure drive upward movement, exposes the inlet opening, makes the oil collecting plate retract in the storage tank simultaneously. The water sample is collected, water flow enters the bottle body from the outside of the bottle body, and an oil film on the oil collecting plate can be flushed into the bottle body to be mixed with the water sample on the impact of the water flow, so that the oil content in the water sample is more similar to the actual condition, and the subsequent detection result is more accurate.

Optionally, the mark subassembly includes mark piston and mark pole, mark piston is arranged in the body with the inner wall butt of body and along the axis direction reciprocating motion of body, mark pole is fixed mark piston and run through the perforation outwards extends, be equipped with the scale on the mark pole.

By adopting the technical scheme, the scale on the marking rod is exposed along with the rising of the marking rod, so that the water quantity of the water sample can be indicated. And the marker rod can extend out of the water surface to judge whether the sampling is finished or not during the sampling.

Optionally, a reset pressure spring is arranged in the accommodating groove, one end of the reset pressure spring is abutted against the pushing piston, and the other end of the reset pressure spring is abutted against the bottom of the accommodating groove.

Through adopting above-mentioned technical scheme, when sampling is finished taking out the body from water, the pressure spring that resets drives the promotion piston for the piston recloses the inlet opening, thereby makes the water sample of gathering can stay in the body.

Optionally, a clamping assembly is arranged between the perforation and the marking rod, the clamping assembly comprises a clamping part and a pushing part for driving the clamping part, one end, close to the marking piston, of the marking rod is provided with a clamping groove matched with the clamping part, and when the marking piston moves to the top of the bottle body, the marking piston pushes the pushing part to drive the clamping part to be in butt joint with the side wall of the clamping groove.

Through adopting above-mentioned technical scheme, the block subassembly block mark pole when the mark pole rises to several limit avoids because of mark pole removal drives the mark piston and removes, avoids the mark piston to extrude the body with the water sample. The marking rod rises in the sampling process, at the moment, the clamping part is contacted with the side wall of the marking rod until the sampling is finished, the clamping part is clamped in the clamping groove, the marking rod is clamped by the clamping part, the marking piston is prevented from moving due to the movement of the marking rod, and the marking piston is prevented from extruding a water sample out of the bottle body.

Optionally, the pushing part includes the articulated rotor plate on the perforation lateral wall, the block portion is located the rotor plate stretches out the one end of body, the torsional spring is established to the cover on the articulated shaft of rotor plate, the one end butt of torsional spring is in on the rotor plate, the other end of torsional spring is fixed on the perforation lateral wall.

Through adopting above-mentioned technical scheme, the elasticity of torsional spring is with the joint portion all the time on the marking rod, moves along with the marking rod, and the block groove on the marking rod moves to the joint portion to finally by the block of joint portion, realize the centre gripping of marking rod, thereby avoid driving the marking piston and remove because of the marking rod removes, just also avoid marking piston to extrude the body with the water sample.

Optionally, the engagement groove includes a guide plate and an engagement groove, the guide plate covers the engagement groove and the guide plate is fixed at one end of the marking rod near the marking piston.

Through adopting above-mentioned technical scheme, when the mark pole removed, the pivoted panel was pushed by the guide board and is rotated for torsional spring deformation aggravates, continues to remove pivoted panel and guide board separation along with the mark pole, and the pivoted panel resets, supports again to paste in the gomphosis inslot on the mark pole, realizes the centre gripping to the mark pole, thereby avoids driving the mark piston and remove because of the mark pole removes, just also avoids the mark piston to extrude the body with the water sample.

Optionally, the block portion includes the guide roll and is used for the butt to be in the joint strip in the block groove, the guide roll rotates to be connected on the rotor plate, the joint strip is fixed on the rotor plate and arrange in the rotor plate stretches out the one end of body.

Optionally, the clamping groove comprises a guide groove and an abutting groove matched with the clamping strip, the guide groove is arranged on the marking rod and extends towards the axial direction of the marking rod, and the abutting groove is arranged at one end, far away from the marking piston, of the guide groove and is mutually communicated with the guide groove.

Through adopting above-mentioned technical scheme, when removing, can be by the guide slot accurate with joint strip guide to the butt inslot to avoid the emergence of unable locking mark pole phenomenon, realize the centre gripping to the mark pole, thereby avoid driving the mark piston and remove because of the mark pole removes, just also avoid the mark piston to extrude the body with the water sample.

In summary, the present application includes at least one of the following beneficial effects:

1. the oil collecting plate protrudes out of the bottom of the bottle body in an initial state, after the oil collecting plate is put into water, the oil collecting plate is firstly contacted with the water surface, an oil film on the surface is broken and adhered to the oil collecting plate, then the bottle body is put into water, the water pressure is increased, the piston is pushed to move upwards by the water pressure, the water inlet hole is exposed, and meanwhile the oil collecting plate is retracted into the accommodating groove. The water sample is collected, water flow enters the bottle body from the outside of the bottle body, and an oil film on the oil collecting plate can be flushed into the bottle body on the impact of the water flow to be mixed with the water sample, so that the oil content in the water sample is more similar to the actual condition, and the subsequent detection result is more accurate;

2. when the marking rod rises to a few limit, the clamping component clamps the marking rod, so that the marking piston is prevented from moving due to the movement of the marking rod, and the marking piston is prevented from extruding the water sample out of the bottle body. The marking rod rises in the sampling process, at the moment, the clamping part is contacted with the side wall of the marking rod until the sampling is finished, the clamping part is clamped in the clamping groove, the marking rod is clamped by the clamping part, the marking piston is prevented from moving due to the movement of the marking rod, and the marking piston is prevented from extruding a water sample out of the bottle body.

Drawings

FIG. 1 is a schematic diagram of the initial state of a hydraulic oil sampler according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a structure of a clamping assembly of a hydraulic oil sampler according to an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

FIG. 4 is a schematic diagram of a hydraulic oil sampler according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the structure of the sampling end of the hydraulic oil sampler according to the embodiment of the application;

in the figure: 1. a bottle body; 11. a receiving groove; 12. a water inlet hole; 13. perforating; 14. a limiting table; 2. an oil collection assembly; 21. pushing the piston; 22. an oil collecting plate; 23. resetting a pressure spring; 3. a marking assembly; 31. marking a piston; 32. a marking rod; 33. a clamping groove; 331. a guide plate; 332. a fitting groove; 4. a clamping assembly; 41. an engagement portion; 411. a clamping strip; 42. a pushing part; 421. a rotating plate; 422. a torsion spring; 423. and a guide roller.

Detailed Description

The present application is described in further detail below with reference to fig. 1-5.

The embodiment of the application discloses an aqueous oil sampler. Referring to fig. 1, an aqueous oil sampler comprises a bottle body 1 for collecting a water sample, an oil collecting assembly 2 and a marking assembly 3, wherein the bottle body 1 is a bottle body 1 which is sealed up and down, the top opening of the bottle body 1 is taken as an example in the view angle of fig. 1, the marking assembly 3 is placed in the bottle body 1, and the marking assembly 3 extends outwards from the opening. When water in the sampling area enters the bottle body 1, the marking assembly 3 is pushed against, so that the marking assembly 3 can extend outwards from the opening.

Referring to fig. 1, an outer bottom wall of a bottle body 1 is provided with a receiving groove 11 along a circumferential direction of the bottle body 1, an oil collecting assembly 2 is placed in the receiving groove 11 and moves back and forth in the receiving groove 11, an end portion of the oil collecting assembly 2 extends out of the receiving groove 11 to be in contact with a water sample, a water inlet hole 12 is formed in an inner wall of the receiving groove 11, and the oil collecting assembly 2 closes or opens the water inlet hole 12 when moving in the receiving groove 11. The oil collecting assembly 2 comprises a pushing piston 21 and an oil collecting plate 22, wherein the pushing piston 21 is arranged in the accommodating groove 11 and is mutually abutted with the side wall of the accommodating groove 11, the oil collecting plate 22 is fixed on the pushing piston 21 and extends out of a notch of the accommodating groove 11 to be in contact with a water sample, and the water sample flows into a space between the limiting table 14 and the inner bottom wall of the bottle body 1 through the water inlet 12.

When in sampling, the bottle body 1 is directly put into water, the oil collecting assembly 2 is firstly contacted with the water surface, so that an oil film solidified on the surface of the water is contacted with the oil collecting assembly 2, the oil film is hung on the oil collecting assembly 2, then the oil collecting assembly 2 is pushed, water flows into the bottle body 1 for collecting water samples, the oil film on the oil collecting assembly 2 can be brought into the bottle body 1 to be mixed with the water samples due to the impact force of the water flow in the collecting process, the self weight of the bottle body 1 is increased, the sampling depth is deepened, the marking assembly 3 is pushed by the water in the bottle body 1 to extend out of the perforation 13, the more and more the marking assembly 3 extends out of the perforation 13, and the marking assembly 3 stops rising until the sampling is finished. When sampling, the oil film in a solid state is adhered to the oil collecting assembly 2, and the oil film can be mixed with a water sample in the collecting process, so that the oil content of the water sample is closer to the real state, and the subsequent detection result is more accurate. When the oil collecting plate 22 is used, the oil collecting plate 22 protrudes out of the bottom of the bottle body 1, after being put into water, the oil collecting plate 22 is firstly contacted with the water surface, an oil film on the surface is broken and adhered on the oil collecting plate 22, then the bottle body 1 is put into water, the piston 21 is pushed to move upwards under the driving of the water pressure along with the increase of the water pressure, the water inlet hole 12 is exposed, and meanwhile, the oil collecting plate 22 is retracted into the accommodating groove 11. The water sample is collected, and water flow enters the bottle body 1 from the outside of the bottle body 1, and an oil film on the oil collecting plate 22 can be flushed into the bottle body 1 to be mixed with the water sample on the impact of the water flow, so that the oil content in the water sample is more similar to the actual condition, and the subsequent detection result is more accurate.

Referring to fig. 1, a return compression spring 23 may be disposed in the accommodating groove 11, one end of the return compression spring 23 abuts against the pushing piston 21, and the other end of the return compression spring 23 abuts against the bottom of the accommodating groove 11. When the bottle body 1 is taken out of the water after sampling is finished, the reset pressure spring 23 drives the pushing piston 21, so that the piston re-closes the water inlet 12, and the collected water sample can be left in the bottle body 1.

Referring to fig. 1, the bottom of the accommodating groove 11 protrudes toward the inside of the bottle body 1 to form a limiting table 14, the limiting table 14 is arranged on the inner bottom wall of the bottle body 1 and is higher than the inner bottom wall, the inner wall of the accommodating groove 11 is communicated with the inside of the bottle body 1 through the water inlet 12, and the limiting table 14 is used for abutting against the marking component 3. When the bottle body 1 is used, the marking component 3 is abutted on the limiting table 14, a gap is reserved between the marking component and the bottom of the bottle body 1, when the bottle body 1 is submerged in the sampling process after being put into water, the water pressure gradually increases, the pushing piston 21 is driven by the water pressure to move upwards, the water inlet hole 12 is exposed, and meanwhile the oil collecting plate 22 is retracted into the accommodating groove 11. The water sample is collected, and water flow enters the bottle body 1 from the outside of the bottle body 1, and an oil film on the oil collecting plate 22 can be flushed into the bottle body 1 to be mixed with the water sample on the impact of the water flow, so that the oil content in the water sample is more similar to the actual condition, and the subsequent detection result is more accurate. Simultaneously, water enters through the water inlet hole 12, water samples fill the gap, and the marking assembly 3 is ejected outwards, so that the marking assembly 3 ascends to play a role in marking. After the sampling is completed, the pressure is reduced along with the retrieval of the bottle body 1, and the reset pressure spring 23 drives the pushing piston 21, so that the piston re-closes the water inlet 12, and the collected water sample can be left in the bottle body 1.

Referring to fig. 1, the marking assembly 3 includes a marking piston 31 and a marking rod 32, the marking piston 31 is disposed in the bottle body 1, abuts against the inner wall of the bottle body 1 and reciprocates along the axial direction of the bottle body 1, the marking rod 32 is fixed on the marking piston 31 and extends outwards through the through hole 13, and the marking rod 32 is provided with graduations. As the marking rod 32 is raised, the scale on the marking rod 32 is exposed, thereby indicating the water level of the water sample. And the marker rod 32 can be extended out of the water surface to determine whether the sampling is finished.

Referring to fig. 1 and 2, an engaging unit 4 is provided between the through hole 13 and the marking rod 32, and referring to fig. 3, the engaging unit 4 includes an engaging portion 41 and a pushing portion 42 for driving the engaging portion 41, one end of the marking rod 32 near the marking piston 31 is provided with an engaging groove 33 adapted to the engaging portion 41, and when the marking piston 31 moves to the top of the bottle body 1, the marking piston 31 pushes the pushing portion 42 to drive the engaging portion 41 to abut against a side wall of the engaging groove 33. When the marking rod 32 rises to a few limit, the clamping component 4 clamps the marking rod 32, so that the marking piston 31 is prevented from moving due to the movement of the marking rod 32, and the marking piston 31 is prevented from extruding the water sample out of the bottle body 1. The marking rod 32 rises in the sampling process, at this time, the clamping part 41 contacts with the side wall of the marking rod 32 until the sampling is finished, the clamping part 41 is clamped in the clamping groove 33, the marking rod 32 is clamped by the clamping part 41, the marking piston 31 is prevented from moving due to the movement of the marking rod 32, and the marking piston 31 is prevented from extruding the water sample out of the bottle body 1.

Referring to fig. 2 and 3, the pushing part 42 includes a rotation plate 421 hinged to a sidewall of the through hole 13, a torsion spring 422 is sleeved on a hinge shaft of the rotation plate 421, one end of the torsion spring 422 abuts against the rotation plate 421, and the other end of the torsion spring 422 is fixed to the sidewall of the through hole 13. The clamping groove 33 can be composed of a guide plate 331 and a jogging groove 332, and the clamping strip 411 is accurately guided into the butt groove by the guide groove, so that the phenomenon that the marking rod 32 cannot be locked is avoided, the marking rod 32 is clamped, the marking piston 31 is prevented from being driven to move due to the movement of the marking rod 32, and the marking piston 31 is prevented from extruding a water sample out of the bottle body 1. The guide groove is provided on the marking rod 32 and extends in the axial direction of the marking rod 32, and the abutment groove is provided at one end of the guide groove away from the marking piston 31 and communicates with the guide groove. The guide plate 331 is covered on the fitting groove 332, and the guide plate 331 is fixed to one end of the marking rod 32 near the marking piston 31.

Referring to fig. 2 and 3, the engaging portion 41 includes a guide roller 423 and an engaging strip 411 for abutting in the engaging groove 33, the guide roller 423 is rotatably connected to the rotating plate 421, and the engaging strip 411 is fixed to the rotating plate 421 and is disposed at an end of the rotating plate 421 extending out of the body 1. The elasticity of torsional spring 422 in the sampling process is with rotor plate 421 by guide board 331 pushing against and rotating for torsional spring 422 warp the aggravation, continues to remove rotor plate 421 along with mark pole 32 and guide board 331 separation, rotor plate 421 resets, supports again in the gomphosis groove 332 on mark pole 32, realizes the centre gripping to mark pole 32, thereby avoids driving mark piston 31 removal because of mark pole 32 removes, just also avoids mark piston 31 to extrude body 1 with the water sample.

Referring to fig. 1, when the water sample is required to be collected, the water and oil sampler is taken out, the marking piston 31 of the water and oil sampler contacts with the limiting table 14 at this time, and the reset pressure spring 23 drives the pushing piston 21 to close the water inlet 12 in the middle of the accommodating groove 11. At this time, there is a height difference between the end of the oil collecting plate 22 and the bottom of the bottle body 1. That is, the staff throws out the water oil collector to the water surface vertically to the sampling area, of course, the balancing weight can also be evenly distributed on the outer wall of the bottle body for ensure that the bottle body 1 can get into the water surface of the sampling area with vertical gesture. The balancing weight is arranged on one side of the bottle body 1 close to the clamping assembly 4, so that the oil collecting plate 22 is always kept in contact with the water surface of the sampling area at first when water enters. The water oil collector vertically enters water downwards, the oil collecting plate 22 contacts with the water surface to cut the solid oil film formed on the surface, and the oil film can be adhered to the oil collecting plate 22 due to the action of the water surface. As the water oil collector continues to sink, referring to fig. 4 and 5, the pressure to which the pushing piston 21 is subjected becomes gradually greater until the pushing piston 21 can be driven to move along the accommodating groove 11, the pushing piston 21 no longer seals the water inlet 12, and water in the sampling area flows into the area between the marking piston 31 and the limiting table 14, filling the area. As this area fills up, the body 1 becomes heavier and sinks and the water pressure increases, eventually causing the marking piston 31 to move and the marking rod 32 to move up from within the perforation 13. Along with the rising of the marking piston 31, the guide roller 423 on the rotating rod always abuts against the side wall of the marking rod 32, and the inner diameter of the perforation 13 is larger than the outer diameter of the marking rod 32, so that the guide roller 423 plays a role in clamping and guiding the marking rod 32 in the moving process of the marking rod 32. Along with the gradual rising of marking piston 31 to the top of body 1, guide board 331 and guide roll 423 contact, thereby realize supporting to push away guide roll 423, with rotor plate 421 supporting to keep away from marking rod 32, and the gomphosis groove 332 in guide board 331 below also can rise thereupon, make guide board 331 keep away from guide roll 423 when marking rod 32 continuously rises, guide roll 423 supports with marking rod 32 again under the effect of torsional spring 422 and pastes, at this moment, the block is in gomphosis groove 332 promptly, realize the spacing to marking rod 32, thereby avoid driving marking piston 31 removal because of marking rod 32 removes, just avoid marking piston 31 to extrude body 1 with the water sample.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides an oil sampler of quality of water, includes body (1), collection oil subassembly (2) and mark subassembly (3) that are used for throwing into sampling area collection water sample, its characterized in that: the outer bottom wall of the bottle body (1) is provided with a containing groove (11) along the circumferential direction of the bottle body (1), the oil collecting assembly (2) is arranged in the containing groove (11) and moves back and forth in the containing groove (11), the end part of the oil collecting assembly (2) extends out of the containing groove (11) to be in contact with a water sample, the inner wall of the containing groove (11) is provided with a water inlet hole (12), and the oil collecting assembly (2) is driven by the pressure of the water sample to open the water inlet hole (12) when moving in the containing groove (11);

the marking assembly (3) is arranged in the bottle body (1) and moves back and forth along the axis direction of the bottle body (1), a through hole (13) for the marking assembly (3) to pass through is formed in the top of the bottle body (1), the marking assembly (3) passes through the through hole (13) to extend outwards, and a water sample entering the bottle body (1) drives the marking assembly (3) to move towards the top of the bottle body (1) and pass through the through hole (13);

the bottom of the accommodating groove (11) protrudes towards the inside of the bottle body (1) to form a limiting table (14), the limiting table (14) is arranged on the inner bottom wall of the bottle body (1) and is higher than the inner bottom wall, the inner wall of the accommodating groove (11) is communicated with the inside of the bottle body (1) through a water inlet (12), and the limiting table (14) is used for being abutted against the marking assembly (3);

the oil collecting assembly (2) comprises a pushing piston (21) and an oil collecting plate (22), the pushing piston (21) is arranged in the accommodating groove (11) and is mutually abutted with the side wall of the accommodating groove (11), the oil collecting plate (22) is fixed on the pushing piston (21) and extends out of the notch of the accommodating groove (11) and is in contact with a water sample, and the water sample flows into between the limiting table (14) and the inner bottom wall of the bottle body (1) through the water inlet hole (12).

2. An aqueous oil sampler according to claim 1 and wherein: the marking assembly (3) comprises a marking piston (31) and a marking rod (32), the marking piston (31) is arranged in the bottle body (1) and is abutted against the inner wall of the bottle body (1) and moves back and forth along the axis direction of the bottle body (1), the marking rod (32) is fixed on the marking piston (31) and penetrates through the perforation (13) to extend outwards, and scales are arranged on the marking rod (32).

3. An aqueous oil sampler according to claim 1 and wherein: a reset pressure spring (23) is arranged in the accommodating groove (11), one end of the reset pressure spring (23) is abutted to the pushing piston (21), and the other end of the reset pressure spring (23) is abutted to the groove bottom of the accommodating groove (11).

4. An aqueous oil sampler according to claim 2 and wherein: the bottle is characterized in that a clamping assembly (4) is arranged between the perforation (13) and the marking rod (32), the clamping assembly (4) comprises a clamping portion (41) and a pushing portion (42) for driving the clamping portion (41), one end, close to the marking piston (31), of the marking rod (32) is provided with a clamping groove (33) matched with the clamping portion (41), and when the marking piston (31) moves to the top of the bottle body (1), the marking piston (31) pushes the pushing portion (42) to drive the clamping portion (41) to be in contact with the side wall of the clamping groove (33).

5. An aqueous oil sampler according to claim 4 and wherein: the pushing part (42) comprises a rotating plate (421) hinged to the side wall of the through hole (13), the clamping part (41) is arranged at one end of the rotating plate (421) extending out of the bottle body (1), a torsion spring (422) is sleeved on a hinge shaft of the rotating plate (421), one end of the torsion spring (422) is abutted to the rotating plate (421), and the other end of the torsion spring (422) is fixed to the side wall of the through hole (13).

6. An aqueous oil sampler according to claim 5 and wherein: the clamping groove (33) comprises a guide plate (331) and an embedding groove (332), the guide plate (331) is covered on the embedding groove (332), and the guide plate (331) is fixed at one end, close to the marking piston (31), of the marking rod (32).

7. An aqueous oil sampler according to claim 6 and wherein: the clamping part (41) comprises a guide roller (423) and a clamping strip (411) which is abutted in the clamping groove (33), the guide roller (423) is rotationally connected to the rotating plate (421), and the clamping strip (411) is fixed to the rotating plate (421) and is arranged at one end of the rotating plate (421) extending out of the bottle body (1).

8. An aqueous oil sampler according to claim 7 and wherein: the clamping groove (33) comprises a guide groove and an abutting groove matched with the clamping strip (411), the guide groove is arranged on the marking rod (32) and extends towards the axial direction of the marking rod (32), and the abutting groove is arranged at one end, far away from the marking piston (31), of the guide groove and is mutually communicated with the guide groove.