CN115683733A - A kind of natural mineral water multi-layer sampling device and sampling method thereof - Google Patents

Abstract

The invention relates to the technical field of water quality detection, in particular to a multi-layer sampling device for natural mineral water and a sampling method thereof. Including a sample collection module, the sample collection module includes several groups of sampling units distributed at equal intervals along the vertical direction, and a group of lifting units are arranged between adjacent two groups of the sampling units; the sampling unit includes a sampling box; A sample storage bottle is movable installed in the sampling box, and an intermediary ring is sleeved on the outside of the sample storage bottle, and a micropump is connected between the intermediary ring and the sample storage bottle; the outer wall of the intermediary ring is distributed in an annular array. Several groups of second water inlet pipes, the other end of the second water inlet pipes extends to the outside of the sampling box and is connected with a sampling pipe. The present invention can also quickly adjust the sampling depth under the condition of satisfying multi-level simultaneous sampling.

Description

A kind of natural mineral water multi-layer sampling device and sampling method thereof

technical field

The invention belongs to the technical field of water quality detection, in particular to a multi-layer sampling device for natural mineral water and a sampling method thereof.

Background technique

Drinking natural mineral water refers to the water that gushes out naturally from the depths or is collected through drilling. The water quality is not polluted and contains a certain amount of minerals, trace elements and other nutrients.

After retrieval, in the prior art, Chinese Patent Publication No.: CN211504837U, Authorized Publication Date: 2020-09-15, has announced a mountain spring water sampling device. Including the collection pipe 1, the top of the collection pipe 1 is provided with a motorized chamber 2, and the interior of the motorized chamber 2 is installed with a servo motor 3, the output end of the servo motor 3 is connected with a first bevel gear 4, and the top of the inner wall of the collection pipe 1 is provided with There is a sleeve 16 penetrating to the inside of the motor compartment 2 , the inside of the sleeve 16 is movably connected with the rotating shaft 6 , and the top of the outer side of the rotating shaft 6 is provided with a second bevel gear 5 . This embodiment enables mountain spring water to be pumped into the collection pipe, which is convenient to carry and easy to operate.

But the device still has the following defects: the above-mentioned embodiment can only sample the shallow streams and other places, and can only extract the spring water samples in a single depth and single layer at the same time. When sampling layers, the above embodiment not only prolongs the sampling time, but also reduces the accuracy of multi-layer sampling due to manually determining the height, thereby reducing the functionality of the device.

Contents of the invention

In view of the above problems, the present invention provides a multi-layer sampling device for natural mineral water, including a sample collection module, the sample collection module includes several groups of sampling units distributed at equal intervals along the vertical direction, and the sampling units of the adjacent two groups are There is a set of lifting units between the units;

The sampling unit includes a sampling box; a sample storage bottle is movably installed in the sampling box, and an intermediary ring is sleeved outside the sample storage bottle, and a micropump is connected between the intermediary ring and the sample storage bottle; the intermediary There are several groups of second water inlet pipes distributed in an annular array on the outer wall of the ring, and the other end of the second water inlet pipe extends to the outside of the sampling box and is connected with a sampling pipe;

The lifting unit includes a first sealing plate; the top of the first sealing plate is installed on the bottom outer wall of the upper set of sampling boxes, and a second sealing plate is provided directly below the first sealing plate, and the second sealing plate The bottom of the plate is installed on the top outer wall of the sampling box below; a second electric push rod is installed between the first sealing plate and the second sealing plate;

A vacuum pump is arranged above the sample collection module, and the sample storage bottles of each group are connected with the vacuum pump, and a center console is arranged on one side of the vacuum pump, and the micropump and the second electric push rod of each group are connected with the center console. Taipower connection.

Further, the sampling device also includes an operating table, the operating table is located directly above the sample collection module, and the vacuum pump and the central console are installed on the operating table; the operating table is provided with a ventilation port, A ventilation unit is communicated with the bottom of the ventilation port, and the ventilation unit is communicated with each group of the sample storage bottles.

Further, a first electric push rod is installed at the center of the bottom of the console, and the bottom of the first electric push rod is installed on the top of the uppermost group of sampling boxes; and the outside of the first electric push rod is provided with a first Sealed telescoping sleeve.

Further, the sampling pipe is arranged obliquely, and the height of one end close to the second water inlet pipe is higher than that of the other end.

Further, the sampling unit also includes a ventilation tube and several sets of sealing connection mechanisms, one end of the ventilation tube is connected to the top inner wall of the sample preservation bottle, and the other end is connected to the ventilation unit through a set of sealing connection mechanisms.

Further, the sampling unit also includes a water outlet pipe; one end of the water outlet pipe extends to the bottom inner wall of the sample storage bottle, and the other end communicates with a sampling hard tube through a set of sealed connection mechanisms, and the other end of the sampling hard tube communicates with There is a sampling hose, the other end of which is connected to the input end of the vacuum pump.

Further, the sealing connection mechanism includes a thin tube, the thin tube communicates with the ventilation tube, and the outer diameter of the thin tube is smaller than the outer diameter of the ventilation tube, and the outer wall of the thin tube close to the port at the other end is sleeved with An anti-off ring, the thin tube is slidably sleeved with a sliding ring, and the inner diameter of the sliding ring is larger than the outer diameter of the thin tube, and smaller than the outer diameter of the anti-off ring; A threaded sleeve, the other end of the threaded sleeve is threadedly connected to the ventilation unit; the end of the thin tube away from the ventilation tube communicates with the input end of the ventilation unit.

Further, the ventilation unit includes several groups of ventilation hard tubes with the same number as the sampling box; several groups of the ventilation hard tubes are equally spaced along the vertical direction, and a group of ventilation tubes are connected between adjacent two groups of the ventilation hard tubes. Hose; the top of the uppermost group of the ventilation hard tubes communicates with the ventilation port; the side wall of the ventilation hard tube close to the corresponding group of sampling boxes is provided with a ventilation tube inlet, and the outer wall of the ventilation tube inlet is An external threaded port is provided, and the end of the threaded sleeve away from the sliding ring is threadedly connected to the external threaded port; the end of the thin tube far away from the ventilation tube communicates with the inlet of the ventilation tube, and the junction of the thin tube and the inlet of the ventilation tube is provided There are sealing rings.

Further, the sampling device also includes a balance unit, the balance unit includes a balance head; the top of the balance head is installed on the bottom outer wall of the bottom group of sampling boxes, and a sealed inner cavity is opened in the balance head, so Two groups of through grooves are symmetrically opened on both sides of the sealed inner cavity, and both ends of the through grooves are open structures; a rocking rod is hinged on the inner wall of the top of the sealed inner cavity through a universal ball, and the bottom of the rocking rod is fixedly installed with A mass block; the mass block is a solid iron block; several groups of return springs are distributed in a circular array on the equator of the mass block, and the other end of the return spring is installed on the inner wall of the sealed cavity.

A multi-layer sampling method for natural mineral water, said sampling method comprising:

Place the sample collection module in the spring water along the vertical direction, and fix the position;

Use the center console to start each group of second electric push rods at the same time, so that each group of sampling boxes can be located at different depths according to the actual sampling;

The spring water enters the intermediary ring from different directions through each group of sampling tubes distributed in the annular array, and then the micropump is turned on through the center console to discharge the spring water in the intermediary ring into the sample preservation bottle;

Turn off the micropump, turn on the vacuum pump, and extract the spring water samples in each group of sample preservation bottles in sequence, so as to obtain spring water samples of different layers and different depths.

The beneficial effects of the present invention are:

1. Each group of sampling boxes is equally spaced along the vertical direction, and the spacing between each group of sampling boxes can be adjusted through the first electric push rod, so that each group of sampling boxes can freely adjust the depth and work according to actual needs It is simple and convenient, and can quickly adjust the sampling depth under the condition of satisfying multi-level simultaneous sampling. It not only improves the sampling speed, but also enriches the functionality of the device. After the spring water samples are collected, the samples in the storage bottles of each group of spring water samples are directly extracted sequentially through the vacuum pump, without taking out each group of sampling boxes from the spring water. When the spring water sample is collected again, the above operations can be repeated directly, which saves the disassembly and assembly time of the sample collection module during the two sampling processes, thereby improving work efficiency.

2. In the process of collecting spring water samples, the spring water enters the intermediary ring from different orientations through various sets of sampling tubes distributed in a circular array. By increasing the orientation and using the length of the sampling tubes themselves, the range of spring water sample collection is expanded. In this way, the accuracy of subsequent sample detection work is improved. And the height of one end of each group of sampling pipes close to the second water inlet pipe is higher than the other end, so that after the sample collection module finishes sampling work and leaves the spring water, the spring water in the intermediary ring will flow out through each group of sampling pipes, avoiding the The hot spring water will corrode the intermediary ring, which is convenient for later cleaning.

3. Before putting the sample collection module into the spring water, first connect the uppermost group of ventilation hard tubes with the ventilation port, and then through the thread relationship between the external threaded port and the threaded sleeve, connect each group of ventilation hard tubes to the A corresponding set of thin tubes communicates. The sample preservation bottle can communicate with the external air, and when the spring water sample enters or leaves the sample preservation bottle, the air will quickly leave or enter the sample preservation bottle. The air pressure stability of the sample preservation bottle is guaranteed, and thus the fluency of sample collection work is improved.

4. Each group of sampling boxes is distributed at equal intervals, and the distance between adjacent two groups of sampling boxes is adjustable, so that the depth of each group of sampling boxes can be adjusted freely according to actual needs. The adjustment work is simple and convenient. In the case of simultaneous sampling of layers, the sampling depth can also be quickly adjusted.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure pointed out in the written description, claims hereof as well as the appended drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 shows a schematic structural view of a sampling device according to an embodiment of the present invention;

Fig. 2 shows a schematic cross-sectional view of a sampling device according to an embodiment of the present invention;

Fig. 3 shows a schematic structural diagram of an operating console according to an embodiment of the present invention;

Fig. 4 shows a schematic structural diagram of a sample collection module according to an embodiment of the present invention;

Fig. 5 shows a schematic cross-sectional view of a sampling unit and a lifting unit according to an embodiment of the present invention;

Figure 6 shows a schematic diagram of the connection between the intermediary tube and the sample preservation bottle according to an embodiment of the present invention;

FIG. 7 shows an enlarged schematic cross-sectional view of circle A in FIG. 2 according to an embodiment of the present invention;

Fig. 8 shows a schematic cross-sectional view of a balancing unit according to an embodiment of the present invention.

In the figure: 100, console; 110, air exchange port; 120, first sealing telescopic sleeve; 130, first electric push rod; 200, center console; 300, vacuum pump; 400, sampling unit; 410, sampling box; 420, lining plate; 430, sample preservation bottle; 440, intermediary ring; 441, connection port; 442, first water inlet pipe; 443, micropump; 450, second water inlet pipe; 460, sampling pipe; 461, sampling port ;470, air exchange pipe; 471, thin tube; 472, anti-off ring; 473, threaded sleeve; 474, sliding ring; 480, water outlet pipe; 500, lifting unit; 510, first sealing plate; Plate; 530, the second electric push rod; 540, the second sealing telescopic sleeve; 600, ventilation unit; 610, ventilation hard pipe; 620, ventilation hose; 630, ventilation pipe inlet; 640, sealing ring; 700, sampling hard Tube; 710, sampling hose; 800, balance unit; 810, balance head; 811, sealed inner cavity; 812, through groove; 820, rocking rod; 830, mass block; 840, return spring.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a multi-layer sampling device for natural mineral water, including an operation console 100 . Exemplarily, as shown in FIG. 1 and FIG. 2 , an air exchange port 110 is opened on the operating table 100 . A set of foldable brackets are respectively provided on both sides of the bottom of the console 100 .

A first electric push rod 130 is installed at the center of the bottom of the console 100 , and a sample collection module is installed at the bottom of the first electric push rod 130 . And the first electric push rod 130 is provided with a first sealing telescopic sleeve 120 outside.

The sample collection module includes several groups of sampling units 400 and several groups of lifting units 500, several groups of sampling units 400 are distributed at equal intervals in the vertical direction, and a group of lifting units are passed between adjacent two groups of sampling units 400. Unit 500 is connected. The sampling unit 400 is used to collect samples from water, and the lifting unit 500 is used to control the distance between two adjacent groups of sampling units 400 .

A ventilation unit 600 is connected under the ventilation opening 110 , and the ventilation unit 600 is connected with the cavities of each group of the sampling units 400 . The ventilation unit 600 is used to ensure the air circulation between the sampling unit 400 and the outside during the sampling process.

The side of each group of sampling units 400 away from the ventilation unit 600 is connected to a group of sampling hard tubes 700 , and the end of the sampling hard tubes 700 away from the sampling unit 400 is connected to a sampling hose 710 .

A balance unit 800 is installed at the bottom of the bottom group of sampling units 400 . The balance unit 800 is used to improve the stability of the sample collection module in water.

Exemplarily, as shown in FIG. 3 , a center console 200 is installed on the console 100 , and the center console 200 is electrically connected to the first electric push rod 130 , the sampling unit 400 and the lifting unit 500 respectively.

A vacuum pump 300 is installed on the console 100 , and the input end of the vacuum pump 300 communicates with the end of the sampling hose 710 away from the hard sampling tube 700 .

The sampling unit 400 includes a sampling box 410 . Exemplarily, as shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the sampling box 410 is installed under the operating table 100, and a lining plate 420 is installed in the sampling box 410, and the lining A sample preservation bottle 430 is movably clamped on the plate 420, and an intermediary ring 440 is sleeved on the outside of the sample preservation bottle 430. The central axis of the intermediary ring 440 coincides with the central axis of the sample preservation bottle 430, and the intermediary A gap is provided between the inner wall of the ring 440 and the outer wall of the sample preservation bottle 430 . The outer wall of the sample preservation bottle 430 is connected with a first water inlet pipe 442 , the other end of the first water inlet pipe 442 is connected with the cavity of the intermediary ring 440 , and the first water inlet pipe 442 is provided with a micropump 443 . The outer wall of the intermediary ring 440 is distributed with several groups of connection ports 441 in a circular array, each group of connection ports 441 is connected with a group of second water inlet pipes 450, and the other end of the second water inlet pipes 450 extends to the sampling box 410 outside, and communicated with a sampling tube 460 . Several groups of sampling ports 461 are evenly distributed on the surface of the sampling pipe 460 , the sampling pipe 460 is arranged obliquely, and the height of one end close to the second water inlet pipe 450 is higher than that of the other end. The micropump 443 is electrically connected with the center console 200 .

Exemplarily, the sampling unit 400 also includes a ventilation tube 470, a water outlet tube 480, and several sets of sealed connection mechanisms. One end of the ventilation tube 470 is connected to the top inner wall of the sample storage bottle 430, and the other end passes through a set of sealed connection mechanisms. It communicates with the ventilation unit 600 . One end of the water outlet pipe 480 extends to the bottom inner wall of the sample preservation bottle 430 , and the other end communicates with a corresponding set of sampling hard tubes 700 through a set of sealing connection mechanisms.

The sealing connection mechanism includes a thin tube 471, the thin tube 471 is communicated with the ventilation tube 470, and the outer diameter of the thin tube 471 is smaller than the outer diameter of the ventilation tube 470, and the outer wall of the thin tube 471 is close to the port at the other end. An anti-off ring 472 is sleeved, and a sliding ring 474 is slidably sleeved on the thin tube 471 , and the inner diameter of the sliding ring 474 is larger than the outer diameter of the thin tube 471 and smaller than the outer diameter of the anti-off ring 472 . A threaded sleeve 473 is installed at the end port of the sliding ring 474 away from the ventilation tube 470 , and the other end of the threaded sleeve 473 is threadedly connected to the ventilation unit 600 . The end of the narrow tube 471 away from the ventilation tube 470 communicates with the input end of the ventilation unit 600 .

The lifting unit 500 includes a first sealing plate 510 . Exemplarily, as shown in FIG. 5 , the top of the first sealing plate 510 is installed on the bottom outer wall of the upper set of sampling boxes 410 , and a second sealing plate 520 is provided directly below the first sealing plate 510 , so The bottom of the second sealing plate 520 is installed on the top outer wall of the lower set of sampling boxes 410 . A second electric push rod 530 is mounted on the bottom of the first sealing plate 510 , and an output end of the second electric push rod 530 is mounted on the top of the second sealing plate 520 . The second electric push rod 530 is provided with a second sealing telescopic sleeve 540 outside.

Firstly, the sample collection module is vertically placed in the spring water, and then the console 100 is erected directly above the spring water through the foldable bracket. It not only facilitates the operation of the center console 200 and the vacuum pump 300, but also improves the stability of the sample collection module.

The first electric push rod 130 and each group of second electric push rods 530 are activated simultaneously by using the center console 200, so that each group of sampling boxes 410 can be located at different depths according to actual sampling requirements. And because the first electric push rod 130 and each group of second electric push rods 530 work at the same time, therefore, the distance between each group of sampling boxes 410 will always be consistent. Preferably, when meeting special needs, one or more sets of second electric push rods 530 can also be individually controlled, so that the distance between each set of sampling boxes 410 changes.

The spring water enters the intermediary ring 440 from different directions through each group of sampling tubes 460 distributed in a circular array, and then the micropump 443 is turned on through the center console 200 to discharge the spring water in the intermediary ring 440 into the sample preservation bottle 430 .

After the spring water is collected, the micropump 443 is turned off, and then the vacuum pump 300 is turned on, and the spring water samples in each group of sample storage bottles 430 are sequentially extracted to obtain spring water samples of different levels and depths.

Each group of sampling boxes 410 is equally spaced along the vertical direction, and the spacing between each group of sampling boxes 410 can be adjusted through the first electric push rod 130, so that the depth of each group of sampling boxes 410 can be freely adjusted according to actual needs. The adjustment work is simple and convenient, and the sampling depth can be quickly adjusted under the condition of satisfying multi-level simultaneous sampling. Not only the sampling speed is improved, but also the functionality of the device is enriched. After the spring water samples are collected, the samples in each group of spring water sample storage bottles 430 are directly extracted in sequence through the vacuum pump 300, without taking each group of sampling boxes 410 out of the spring water. When the spring water sample is collected again, the above operations can be repeated directly, which saves the disassembly and assembly time of the sample collection module during the two sampling processes, thereby improving work efficiency.

During the process of collecting spring water samples, the spring water enters the intermediary ring 440 from different orientations through each group of sampling tubes 460 distributed in an annular array. By increasing the orientation and using the length of the sampling tubes 460 themselves, the range of spring water sample collection is expanded. In this way, the accuracy of subsequent sample detection work is improved. In addition, the height of one end of each group of sampling pipes 460 close to the second water inlet pipe 450 is higher than the other end, so that the spring water in the intermediary ring 440 will flow out through each group of sampling pipes 460 after the sample collection module completes the sampling work and leaves the spring water. Prevent the spring water in the intermediary ring 440 from corroding the intermediary ring 440, and facilitate the later cleaning work.

The ventilation unit 600 includes several groups of ventilation hard tubes 610 having the same number as the sampling boxes 410 . Exemplarily, as shown in FIG. 7 , several groups of the ventilation hard tubes 610 are distributed at equal intervals along the vertical direction, and a group of ventilation hoses 620 are communicated between adjacent two groups of the ventilation hard tubes 610 . The tops of the uppermost set of ventilation hard tubes 610 communicate with the ventilation opening 110 . The ventilation pipe 610 is provided with a ventilation pipe inlet 630 on the side wall close to the corresponding group of sampling boxes 410, and the outer wall of the ventilation pipe inlet 630 is provided with an external threaded port, and the threaded sleeve 473 is far away from the sliding ring 474 One end of the screw is connected to the external threaded port. The end of the thin tube 471 far away from the ventilation tube 470 communicates with the inlet 630 of the ventilation tube, and a sealing ring 640 is provided at the junction of the thin tube 471 and the inlet 630 of the ventilation tube.

Before putting the sample collection module into the spring water, first connect the uppermost set of ventilation hard tubes 610 with the ventilation port 110, and then connect each group of ventilation hard tubes 610 through the thread relationship between the external threaded port and the threaded sleeve 473. communicate with a corresponding set of thin tubes 471 respectively. The sample preservation bottle 430 can communicate with external air, and when the spring water sample enters or leaves the sample preservation bottle 430, the air will quickly leave or enter the sample preservation bottle 430. The air pressure stability of the sample preservation bottle 430 is ensured, thereby improving the fluency of sample collection work.

The balancing unit 800 includes a balancing head 810 . Exemplarily, as shown in Figure 8, the top of the balance head 810 is installed on the bottom outer wall of the bottom group of sampling boxes 410, and a sealed inner cavity 811 is opened in the balanced head 810, and the sealed inner cavity 811 has two sides. There are two groups of through grooves 812 arranged symmetrically on the sides, and both ends of the through grooves 812 are open structures. A swing rod 820 is hinged on the top inner wall of the sealed inner cavity 811 through a universal ball, and a mass block 830 is fixedly installed at the bottom of the swing rod 820 . The mass block 830 is but not limited to a solid iron block. Several groups of return springs 840 are distributed in a circular array on the equator of the mass block 830 , and the other end of the return springs 840 is installed on the inner wall of the sealed cavity 811 .

When the water flow hits the balance head 810 , the water flow will flow from one end of the balance head 810 to the other end through each set of through slots 812 , reducing the impact of the water flow on the balance head 810 . The remaining impact force acts on the balance head 810, pushing the balance head 810 to move. At this time, the internal mass block 830 will swing in the opposite direction due to its own weight and the hinge connection with the sealed inner cavity 811, offsetting the remaining impact force. , and then use the elastic force of the return spring 840 to make the balance head 810 drive the sample collection module to quickly reset. The impact of the water flow on the sample collection module is reduced, and the underwater stability of the sample collection module is increased, so that each group of sampling boxes 410 is always kept at a certain depth, ensuring the accuracy of the collection work.

On the basis of the above-mentioned multi-layer sampling device for natural mineral water, an embodiment of the present invention also proposes a sampling method for the sampling device. Exemplary, the sampling method includes:

Place the sample collection module in the spring water in the vertical direction, and then erect the operation table directly above the spring water through the foldable bracket;

Use the center console to start the first electric push rod and each group of second electric push rods at the same time, so that each group of sampling boxes can be located at different depths according to the actual sampling requirements;

The spring water enters the intermediary ring from different directions through each group of sampling tubes distributed in the annular array, and then the micropump is turned on through the center console to discharge the spring water in the intermediary ring into the sample preservation bottle;

After the spring water is collected, turn off the micropump, and then turn on the vacuum pump to extract the spring water samples in each group of sample storage bottles in sequence, so as to obtain spring water samples of different levels and depths.

Each group of sampling boxes is equally spaced, and the distance between adjacent two groups of sampling boxes is adjustable, so that the depth of each group of sampling boxes can be freely adjusted according to actual needs, and the adjustment work is simple and convenient. In the case of sampling, the sampling depth can also be quickly adjusted.

Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and these The modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A natural mineral water multi-layer sampling device is characterized in that: it comprises a sample collection module, and the sample collection module includes several groups of sampling units (400) distributed at equal intervals along the vertical direction, adjacent two groups of A set of lifting units (500) are arranged between the sampling units (400); The sampling unit (400) includes a sampling box (410); a sample preservation bottle (430) is movably installed in the sampling box (410), and an intermediary ring (440) is sleeved on the outside of the sample preservation bottle (430), A micropump (443) is communicated between the intermediary ring (440) and the sample preservation bottle (430); several groups of second water inlet pipes (450) are distributed in an annular array on the outer wall of the intermediary ring (440). The other end of the second water inlet pipe (450) extends to the outside of the sampling box (410), and is connected with a sampling pipe (460); The lifting unit (500) includes a first sealing plate (510); the top of the first sealing plate (510) is installed on the bottom outer wall of a group of sampling boxes (410) above, and the first sealing plate (510 ) is provided with a second sealing plate (520), and the bottom of the second sealing plate (520) is installed on the top outer wall of a group of sampling boxes (410) below; the first sealing plate (510) and A second electric push rod (530) is installed between the second sealing plates (520); A vacuum pump (300) is provided above the sample collection module, and each set of sample storage bottles (430) is connected to the vacuum pump (300), and a center console (200) is provided on one side of the vacuum pump (300). Both the micropump (443) and the second electric push rod (530) are electrically connected to the center console (200). 2. a kind of natural mineral water multi-layer sampling device according to claim 1, is characterized in that: described sampling device also comprises operating table (100), and described operating table (100) is positioned at sample collecting module directly above, And the vacuum pump (300) and the center console (200) are all installed on the console (100); the console (100) is provided with a vent (110), and the bottom of the vent (110) is A ventilation unit (600) is communicated, and the ventilation unit (600) is communicated with each group of the sample preservation bottles (430). 3. A multi-layer sampling device for natural mineral water according to claim 2, characterized in that: a first electric push rod (130) is installed at the center of the bottom of the console (100), and the first electric push rod (130) The bottom of the rod (130) is installed on the top of the uppermost group of sampling boxes (410); and the first electric push rod (130) is provided with a first sealing telescopic sleeve (120) outside. 4. A multi-layer sampling device for natural mineral water according to claim 1, characterized in that: the sampling pipe (460) is arranged obliquely, and the height near the end of the second water inlet pipe (450) is higher than that of the other end the height of one end. 5. a kind of natural mineral water multi-layer sampling device according to claim 2, is characterized in that: described sampling unit (400) also comprises ventilation tube (470) and several groups of sealing connection mechanism, and described ventilation tube (470 ) is communicated with the top inner wall of the sample preservation bottle (430), and the other end is communicated with the ventilation unit (600) through a set of sealed connection mechanisms. 6. The multi-layer sampling device for natural mineral water according to claim 2, characterized in that: the sampling unit (400) also includes an outlet pipe (480); one end of the outlet pipe (480) extends to the sample storage On the inner wall of the bottom of the bottle (430), and the other end is communicated with a sampling hard tube (700) through a group of sealed connection mechanisms, and the other end of the sampling hard tube (700) is communicated with a sampling hose (710). The other end of the tube (710) is connected to the input end of the vacuum pump (300). 7. A multilayer sampling device for natural mineral water according to claim 6, characterized in that: the sealed connection mechanism includes a thin tube (471), and the thin tube (471) is communicated with the ventilation tube (470) , and the outer diameter of the thin tube (471) is smaller than the outer diameter of the ventilation tube (470), the outer wall of the thin tube (471) close to the port at the other end is sleeved with an anti-off ring (472), and the thin tube ( 471) is slidingly sleeved with a sliding ring (474), and the inner diameter of the sliding ring (474) is larger than the outer diameter of the thin tube (471) and smaller than the outer diameter of the anti-off ring (472); the sliding ring (474) A threaded sleeve (473) is installed away from the port at one end of the ventilation tube (470), and the other end of the threaded sleeve (473) is threadedly connected to the ventilation unit (600); the thin tube (471) is away from the ventilation tube ( 470) communicates with the input end of the ventilation unit (600). 8. a kind of natural mineral water multi-layer sampling device according to claim 7, is characterized in that: described ventilation unit (600) comprises several groups of ventilation hard tubes (610) identical with sampling box (410) quantity; The ventilation hard tubes (610) of one group are distributed at equal intervals along the vertical direction, and a group of ventilation hoses (620) are connected between two adjacent groups of the ventilation hard tubes (610); the uppermost group of the ventilation hard tubes The top of (610) communicates with the ventilation port (110); the side wall of the hard ventilation pipe (610) near the corresponding group of sampling boxes (410) is provided with a ventilation pipe inlet (630), and the ventilation pipe inlet The outer wall of (630) is provided with an external threaded port, and the threaded sleeve (473) is threadedly connected to the external threaded port at one end away from the sliding ring (474); The inlet of the ventilation pipe (630) is connected, and a sealing ring (640) is provided at the junction of the thin tube (471) and the inlet of the ventilation pipe (630). 9. a kind of natural mineral water multilayer sampling device according to claim 1, is characterized in that: described sampling device also comprises balance unit (800), and described balance unit (800) comprises balance head (810); The top of the balance head (810) is installed on the bottom outer wall of the bottom group of sampling boxes (410), and the balance head (810) is provided with a sealed inner cavity (811), and the two sides of the sealed inner cavity (811) There are two groups of through grooves (812) symmetrically opened, and both ends of the through grooves (812) are open structures; the inner wall of the top of the sealed inner cavity (811) is hinged with a swing rod (820) through a universal ball, and the A mass block (830) is fixedly installed at the bottom of the swing bar (820); the mass block (830) is a solid iron block; several groups of return springs (840) are distributed in a circular array on the equator of the mass block (830), The other end of the return spring (840) is installed on the inner wall of the sealed cavity (811). 10. A sampling method implemented by the arbitrary described natural mineral water multilayer sampling device of claim 1-9, characterized in that: said sampling method comprises: Place the sample collection module in the spring water along the vertical direction, and fix the position; Use the center console to start each group of second electric push rods at the same time, so that each group of sampling boxes can be located at different depths according to the actual sampling; The spring water enters the intermediary ring from different directions through each group of sampling tubes distributed in the annular array, and then the micropump is turned on through the center console to discharge the spring water in the intermediary ring into the sample preservation bottle; Turn off the micropump, turn on the vacuum pump, and extract the spring water samples in each group of sample preservation bottles in sequence, so as to obtain spring water samples of different layers and different depths.

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