CN110411788B - Multi-depth water sample sampling device and using method - Google Patents

Abstract

The invention discloses a multi-depth water sample sampling device and a using method thereof, and relates to the technical field of detection sampling devices. The sampling device sequentially comprises a plurality of interconnected sampling units from top to bottom; the sampling unit comprises a sinking barrel which is a round barrel structure; the side wall of the sinking barrel is provided with a plurality of water outlet holes, and the opening end and the side wall of the bottom periphery of the sinking barrel are provided with a plurality of connecting blocks; a sampling barrel is fixed in the sinking barrel; two adjacent sinking barrels are connected through a plurality of bolt assemblies; the rope tying device is installed on the barrel of the topmost sampling unit in a matched mode and comprises a rope tying ring, a threaded column in movable fit with the fixing through hole is arranged on one side of the rope tying ring, a limiting ring is arranged on the threaded column, and a nut B is arranged at the end portion of the threaded column in a threaded fit mode. The sampling device comprises a plurality of connected sampling units, and the sampling barrel is arranged in the barrel, so that water bodies with different depths can be sampled by one-time operation, the working efficiency of water body sampling is improved, and the labor intensity of sampling is reduced.

Description

Multi-depth water sample sampling device and using method

Technical Field

The invention belongs to the technical field of detection sampling devices, and particularly relates to a multi-depth water sample sampling device and a using method thereof.

Background

With the increasing influence of oceans, lakes and reservoirs on our lives, the research on the chemical components and contents of water bodies concerns the ecological environment and the sustainable development of human beings, and the research in the aspects starts from the acquisition of water samples, so the water sample collection is particularly important, and a water sample collection instrument with reasonable cost and simple working principle is urgently needed.

Chinese patent publication No. CN103852347 a4 discloses a sampling method and a sampling device for ultra-deep underwater depth-fixed sampling, wherein the disclosed sampling device comprises a pulling rope, a film cover plate, a weight plate, a film, a filtering funnel with a water inlet hole on the thimble, a buffer chamber, and a storage.

It exists, can only take a sample to a degree of depth at every turn, and can't realize taking a sample to a plurality of depths simultaneously, when needing to take a sample to the different degree of depth waters of water, it has awkward problem.

Disclosure of Invention

The invention aims to provide a multi-depth water sample sampling device and a using method thereof.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a multi-depth water sample sampling device which sequentially comprises a plurality of interconnected sampling units from top to bottom; the sampling unit comprises a sinking barrel which is a round barrel-shaped structure; the side wall of the sinking barrel is provided with a plurality of water outlet holes, the opening end and the bottom side wall of the sinking barrel are provided with a plurality of connecting blocks, and the connecting blocks are provided with a fixing through hole; a sampling barrel is fixed in the sinking barrel; the adjacent two sinking barrels are connected through a plurality of bolt assemblies, and each bolt assembly comprises a bolt and a nut A which are in threaded fit;

and the rope tying device is arranged on the top of the sinking barrel of the sampling unit in a matching manner and comprises a rope tying ring, a threaded column movably matched with the fixing through hole is arranged on one side of the rope tying ring, a limiting ring is arranged on the threaded column, and a nut B is in threaded fit with the end part of the threaded column.

Further, be equipped with the base that is used for fixed sample bucket in the heavy bucket, the bottom of sample bucket is equipped with the fixed block, be equipped with the fixed orifices on the fixed block.

Furthermore, an end cover is matched with the opening end of the sampling barrel, a through hole is formed in the center of the end cover, and an inward flange is arranged in the through hole; an elastic film is placed on the end cover in a matched mode, a through hole is formed in the center of the elastic film, and a first magnet and a second magnet which are mutually matched and attracted are respectively arranged on the elastic film on the two sides of the through hole; the first magnet and the second magnet are both in a ring shape; a first sealing layer is arranged on the top side surface of the first magnet; a bracket is fixed on the inner wall of the sampling barrel, and a guide rod is fixed on the bracket; and the guide rods positioned at two sides of the elastic film are respectively provided with a sealing plate and an adjusting ring piece, and the top of the adjusting ring piece is fixedly provided with a spring.

Furthermore, a metal filter screen is fixed on the outer side of the sinking barrel.

Furthermore, an annular rubber band is arranged on the outer side of the elastic film; the end cover is in threaded fit with a fixing ring, a notch matched with the annular rubber band is formed in the outer side of the bottom of the fixing ring, and a sealing gasket which is matched and sealed with the elastic film and is arranged annularly is arranged on the bottom side surface of the fixing ring; the top of the fixed ring is also provided with a filter screen; the sealing plate is detachably arranged at the top end of the guide rod through a fixing screw; a second sealing layer is arranged on the contact surface of the first magnet and the elastic film, and a third sealing layer is arranged on the contact surface of the second magnet and the elastic film; the elastic film is a TPU film or a PVC film; the adjusting ring piece is in threaded fit connection with the guide rod.

A method of using a multi-depth water sampling device, comprising:

step 1, respectively determining the depths of a plurality of taken water samples, and calculating the water pressure at each water taking depth;

step 2, calculating the pressure required for the elastic film to compress the sampling barrel and jack the spring to the corresponding water depth degree through the water pressure according to the calculated water pressure;

step 3, calculating the contraction length of the spring according to the elastic coefficient of the spring and the calculated pressure, and adjusting the spring up and down along the guide rod through the adjusting ring; determining the sampling depths of a plurality of sampling barrels, and labeling the sampling barrels in decibels;

Step 4, fixing the plurality of sampling barrels to the plurality of sinking barrels respectively, and fixedly connecting the plurality of sinking barrels in series by matching with a bolt assembly;

step 5, fixing the rope pulling device on the top-most sinking barrel, and connecting the traction rope with the rope pulling device;

step 6, slowly placing the sampling device to a first set water depth, and when the preset depth is reached, compressing the elastic film to the sampling barrel to jack the spring, so that a water sample at the depth enters the sampling barrel;

step 7, after sampling for a period of time, continuing to slowly release the sampling device to a first set water depth, and when the preset depth is reached, compressing the elastic film to the sampling barrel to push open the spring, so that the water sample at the depth enters the sampling barrel;

and 8, repeating the step 7 until the sampling work of all the set depths is finished, and pulling the sampling device out of the water surface to finish the sampling.

The invention has the following beneficial effects:

according to the invention, the sampling device consisting of the plurality of connected sampling units is adopted, and the sampling barrel is arranged in the barrel, so that the sampling of water bodies with different depths is realized by one operation, the working efficiency of water body sampling is improved, and the labor intensity of sampling is reduced.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a multi-depth water sampling device according to the present invention;

FIG. 2 is a schematic diagram of a sampling unit according to the present invention;

FIG. 3 is a schematic view of the tether apparatus of the present invention;

FIG. 4 is a schematic view of a sampling barrel according to the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

fig. 6 is a partially enlarged view of fig. 4 at B.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1, the present invention is a multi-depth water sampling apparatus, which is characterized in that: the sampling device sequentially comprises a plurality of mutually connected sampling units from top to bottom;

referring to fig. 3, the sampling unit includes a barrel 5, and the barrel 5 is a circular barrel structure; the peripheral side wall of the sinking barrel 5 is provided with a plurality of water outlet holes 51, the opening end and the bottom peripheral side wall of the sinking barrel 5 are both provided with a plurality of connecting blocks 52, and the connecting blocks 52 are provided with a fixing through hole 53;

be equipped with the base 7 that is used for fixed sample bucket 1 in the heavy bucket 5, the bottom of sample bucket 1 is equipped with fixed block 11, is equipped with fixed orifices 12 on the fixed block 11, and sample bucket 1 runs through fixed orifices 12 through set screw and fixes on base 7.

Two adjacent heavy buckets 5 are connected through a plurality of bolt assemblies, and each bolt assembly comprises a bolt 6 and a nut A61 which are in threaded fit;

Referring to fig. 2, a rope fastening device 8 is fittingly installed on the sinking barrel 5 of the topmost sampling unit, the rope fastening device 8 includes a rope fastening ring 81, a threaded column 82 movably fitted with the fixing through hole 53 is provided on one side of the rope fastening ring 81, a limiting ring 83 is provided on the threaded column 82, and a nut B84 is threadedly fitted on an end portion of the threaded column 82.

As shown in fig. 4, the present invention includes a sampling barrel 1, an end cap 2 is fitted to an opening end of the sampling barrel 1, a through hole 21 is formed at a center of the end cap 2, and an inward flange 22 is disposed in the through hole 21; an elastic film 4 is arranged on the end cover 2 in a matching way, and the elastic film 4 is a TPU film or a PVC film;

referring to fig. 6, a through hole 42 is formed in the center of the elastic film 4, and a first magnet 44 and a second magnet 43 that are engaged with each other are respectively disposed on the elastic film 4 at two sides of the through hole 42; the first magnet 44 and the second magnet 43 are both in a ring shape; the contact surface of the first magnet 44 and the elastic film 4 is provided with a second sealing layer, the contact surface of the second magnet 43 and the elastic film 4 is provided with a third sealing layer, and the top side surface of the first magnet 44 is provided with a first sealing layer 45;

a bracket 13 is fixed on the inner wall of the sampling barrel 1, and a guide rod 14 is fixed on the bracket 13; the guide rods 14 positioned at two sides of the elastic film 4 are respectively provided with a sealing plate 16 and an adjusting ring piece 15, and the sealing plate 16 is detachably arranged at the top ends of the guide rods 14 through fixing screws 17; the adjusting ring piece 15 is connected with the top of the adjusting ring piece 15 in a threaded fit manner with the guide rod 14, a spring 18 is fixed at the top of the adjusting ring piece 15, and the spring 18 is a plastic spring or a non-magnetic metal spring.

Referring to fig. 5, an annular rubber band 41 is disposed outside the elastic film 4; the end cover 2 is further provided with a fixing ring 3 in a threaded fit mode, a notch 32 matched with the annular rubber band 41 is formed in the outer side of the bottom of the fixing ring 3, a sealing gasket 31 which is matched and sealed with the elastic film 4 and is arranged in an annular mode is arranged on the bottom side face of the fixing ring 3, and a filter screen is further arranged at the top of the fixing ring 3.

Wherein, the outer side of the sinking barrel 5 is fixed with a metal filter screen.

When the mass of the water body with 4 different depths needs to be detected,

a method of using a multi-depth water sampling device, comprising:

step 1, respectively determining the depths of four taken water samples, calculating the water pressure at each water taking depth, determining the depth of the taken water samples, and calculating the water pressure P at the water taking depth to be rho gh, wherein h is the water depth, rho is the water density, and g is a gravity constant;

step 2, calculating the pressure required for the elastic film 4 to compress the sampling barrel 1 and push the spring 18 to the corresponding water depth degree through the water pressure according to the calculated water pressure, and obtaining the water pressures P at four different depths, namely P1, P2, P3 and P4;

step 3, calculating the contraction length of the spring 18 according to the elastic coefficient of the spring and the calculated pressure, wherein P is F is kx, wherein F is the elastic force of the spring, k is the elastic force of the spring, and x is the expansion length, and adjusting the spring up and down along the guide rod 14 through the adjusting ring 15; determining the sampling depths of a plurality of sampling barrels 1, and labeling the sampling barrels 1 decibels;

The telescopic lengths of the 4 springs 18 are x1, x2, x3 and x4 respectively;

step 4, fixing the plurality of sampling barrels 1 on the plurality of sinking barrels 5 respectively, and fixedly connecting the plurality of sinking barrels 5 in series by matching of bolt components;

step 5, fixing the rope tying device 8 on the top-most sinking barrel 5, and connecting a traction rope with the rope tying device 8;

step 6, slowly placing the sampling device to a first set water depth, and when the preset depth is reached, compressing the elastic film 4 towards the sampling barrel 1 to jack the spring 18, so that a water sample at the depth enters the sampling barrel 1;

step 7, after sampling for a period of time, continuing to slowly release the sampling device to a first set water depth, and when reaching a preset depth, compressing the elastic film 4 to the sampling barrel 1 to jack the spring 18, so that a water sample at the depth enters the sampling barrel 1;

and 8, repeating the step 7 until four sampling operations with fixed depth are completed, and pulling the sampling device out of the water surface to complete sampling.

When the elastic film 4 is damaged due to the puncturing of impurities in water, self aging and the like in long-term use and needs to be replaced, the replacing steps comprise:

the elastic film 4 is buckled on the fixing ring 3 along the annular rubber band 41, and the sealing gasket 31 is abutted on the elastic film 4 to form sealing;

Fixing the fixing ring 3 into the end cover 2 by screw thread; meanwhile, a first magnet 44 and a second magnet 43 are respectively arranged at two sides of the through hole 42; the seal plate 16 at the end of the guide bar 14 is removed, the guide bar 14 is penetrated, and the seal plate 16 is fixed to the end of the guide bar 14 by the fixing screw 17.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (4)

1. A multi-depth water sample sampling device comprises a plurality of interconnected sampling units from top to bottom in sequence; the sampling unit comprises a sinking barrel (5), and the sinking barrel (5) is of a round barrel-shaped structure; a plurality of water outlet holes (51) are formed in the peripheral side wall of the sinking barrel (5), a plurality of connecting blocks (52) are arranged on the opening end and the peripheral side wall of the bottom of the sinking barrel (5), and a fixing through hole (53) is formed in each connecting block (52); the method is characterized in that:

a sampling barrel (1) is fixed in the sinking barrel (5);

the two adjacent sinking barrels (5) are connected through a plurality of bolt assemblies, and each bolt assembly comprises a bolt (6) and a nut A (61) which are in threaded fit;

a rope tying device (8) is arranged on the sinking barrel (5) of the sampling unit at the topmost part in a matched mode, the rope tying device (8) comprises a rope tying ring (81), a threaded column (82) movably matched with the fixing through hole (53) is arranged on one side of the rope tying ring (81), a limiting ring (83) is arranged on the threaded column (82), and a nut B (84) is matched with the end portion of the threaded column (82) in a threaded mode;

the outer side of the elastic film is provided with an annular rubber band; the end cover is also provided with a fixing ring in a threaded fit manner, the outer side of the bottom of the fixing ring is provided with a notch matched with the annular rubber band, the bottom side surface of the fixing ring is provided with a sealing gasket which is matched and sealed with the elastic film and is arranged annularly, and the top of the fixing ring is also provided with a filter screen;

An end cover (2) is matched with the opening end of the sampling barrel (1), a through hole (21) is formed in the center of the end cover (2), and an inward flange (22) is arranged in the through hole (21); an elastic film (4) is placed on the end cover (2) in a matching mode, a through hole (42) is formed in the center of the elastic film (4), and a first magnet (44) and a second magnet (43) which are mutually matched and attracted are respectively arranged on the elastic film (4) positioned on the two sides of the through hole (42);

the first magnet (44) and the second magnet (43) are both in a circular ring shape; the top side of the first magnet (44) is provided with a first sealing layer (45); a bracket (13) is fixed on the inner wall of the sampling barrel (1), and a guide rod (14) is fixed on the bracket (13); the guide rods (14) positioned at two sides of the elastic film (4) are respectively provided with a sealing plate (16) and an adjusting ring piece (15), and the top of the adjusting ring piece (15) is fixed with a spring (18).

2. The multi-depth water sample sampling device according to claim 1, wherein a base (7) for fixing the sampling barrel (1) is arranged in the sinking barrel (5), a fixing block (11) is arranged at the bottom of the sampling barrel (1), and a fixing hole (12) is formed in the fixing block (11).

3. A multi-depth water sampling device according to claim 1, wherein a metal filter screen is fixed to the outside of the barrel (5).

4. A method of using a multi-depth water sampling device as claimed in any one of claims 1 to 3, comprising:

step 1, respectively determining the depths of a plurality of taken water samples, and calculating the water pressure at each water taking depth;

step 2, calculating the pressure required by the elastic film (4) to compress the sampling barrel (1) and push the spring (18) to the corresponding water depth degree through the water pressure according to the calculated water pressure;

step 3, calculating the contraction length of the spring (18) according to the elastic coefficient of the spring and the calculated pressure, and adjusting the contraction length up and down along the guide rod (14) through the adjusting ring piece (15); determining the sampling depths of the sampling buckets (1), and labeling the sampling buckets (1) in decibels;

step 4, fixing the plurality of sampling barrels (1) on the plurality of sinking barrels (5) respectively, and fixedly connecting the plurality of sinking barrels (5) in series by matching with a bolt assembly;

step 5, fixing the rope tying device (8) on the sinking barrel (5) positioned at the topmost part, and connecting the traction rope with the rope tying device (8);

step 6, slowly placing the sampling device to a first set water depth, and when the preset depth is reached, compressing the elastic film (4) towards the sampling barrel (1) to jack the spring (18), so that a water sample at the depth enters the sampling barrel (1);

Step 7, after sampling for a period of time, continuing to slowly release the sampling device to a first set water depth, and when reaching a preset depth, compressing the elastic film (4) to the sampling barrel (1) to jack the spring (18), so that a water sample with the depth enters the sampling barrel (1);

and 8, repeating the step 7 until the sampling work of all the set depths is finished, and pulling the sampling device out of the water surface to finish the sampling.

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