CN206095696U - Integrated sampling device of groundwater - Google Patents

Abstract

The utility model provides an integrated sampling device for ground water, which comprises a main body of the sampling device for collecting ground water, a piston pump connected with the main body of the sampling device and a filter for filtering ground water; the filter is connected with a Sampling bottle; the piston pump includes a pump body, a push-pull rod and a piston arranged in the pump body; the pump body is a hollow structure, and the inside of the pump body is provided with a partition for the piston to move up and down. The cavity and the internal partition orifice plate of the water storage cavity used for water storage; the pump body is provided with a water inlet pipe communicating with the water storage cavity, and the water inlet pipe is connected to the main body of the sampling device; the push-pull rod The lower end is connected with the piston through the through hole provided on the pump body. The application range of the groundwater integrated sampling device of the utility model is expanded, especially for medium and low permeability aquifers, and the cost of electricity for drilling and high-power pumps is reduced. The integrated pretreatment process is convenient and efficient in operation, and the properties of water samples are preserved.

Description

An integrated groundwater sampling device

technical field

The utility model relates to the technical field of groundwater sampling devices, in particular to an integrated groundwater sampling device.

Background technique

Groundwater is an important water resource in my country, especially for coastal cities, inland cities and large and medium-sized cities in the north. However, with the sharp increase in water demand for industrial and agricultural production and living, the amount of sewage discharge has increased year by year, making the situation of poor groundwater and pollution in my country more and more severe. Then, rational development, improvement of utilization efficiency and optimization of groundwater quality will become particularly important for the green and sustainable development of my country's ecological economy. Among them, the long-term scientific monitoring and chemical analysis of groundwater is an essential basis for realizing this goal.

At present, my country's emphasis on groundwater sampling and investigation has been greatly increased, especially in the aspects of groundwater eutrophication and heavy metal detection, which are directly related to national life and health. However, the existing groundwater sampling techniques are mainly well-drilling and pumping methods, trench digging methods, and Pushpoint in-line insertion methods. Contaminated, or the obtained water sample is turbid and needs to be filtered again, and the operation time interval is long, so the water sample is easy to deteriorate. Therefore, reducing costs, improving efficiency, ensuring original properties, and streamlining the integrated pretreatment process are important factors to be considered in the design of groundwater sampling devices.

Utility model content

The purpose of this utility model is to provide a groundwater integrated sampling device to solve the time-consuming and labor-consuming sampling method in the prior art. The collection process is easily polluted by contact with surface water and air, or the obtained water sample is turbid and then filtered and operated. The technical problem that the time interval is long and the water sample is easy to deteriorate.

An integrated groundwater sampling device provided by the utility model comprises a main body of the sampling device for collecting groundwater, a piston pump connected to the main body of the sampling device and a filter for filtering groundwater; the filter is connected with a the sampling bottle;

The piston pump includes a pump body, a push-pull rod and a piston disposed in the pump body; the pump body is a hollow structure, and the pump body is provided with a cavity and a cavity for the piston to move up and down. The internal partition orifice plate of the water storage chamber for water storage; the pump body is provided with a water inlet pipe communicating with the water storage chamber, and the water inlet pipe is connected to the main body of the sampling device;

The lower end of the push-pull rod is connected to the piston through a perforation provided on the pump body;

A water-stop ball for blocking the water inlet pipe is arranged in the water storage chamber; a restrictive hole shell is arranged in the water-storage chamber to limit the movement range of the water-stop ball;

The pump body is provided with a water outlet pipe communicating with the water storage chamber, and the water outlet pipe is connected with the filter through a communication pipe; a check valve for restricting the flow of water is arranged on the water outlet pipe.

Further, the main body of the sampling device includes a tank body for collecting groundwater and a pressure gauge arranged on the tank body for measuring pressure; the tank body is provided with a vent pipe for ventilation and a pipe connected to the water inlet pipe. The first water intake pipe; the ventilation pipe and the first water intake pipe are both provided with valves.

Further, the tank body is provided with an opening, and a sealing plug is provided at the opening, and the ventilation pipe, the first water intake pipe and the pressure gauge are all inserted into the tank body through the sealing plug ;

The vent pipe and the lower end of the pressure gauge are located at the upper part of the tank body, and the lower end of the first water intake pipe is located at the lower part of the tank body.

Further, the lower end of the main body of the sampling device is provided with an auger for deep underground, and the upper end of the main body of the sampling device is provided with a drill rod for rotating the main body of the sampling device.

Further, the main body of the sampling device includes an outer filter cartridge, an inner filter cartridge and a suction core pipe; an inner filter cartridge is arranged in the outer filter cartridge, and a water suction core pipe is arranged in the inner filter cartridge;

The drill rod is a hollow structure, and two openings are arranged on the drill rod, one of the openings communicates with the water pumping core pipe, and the other of the openings communicates with the water inlet pipe through a communication pipe.

Further, coarse sand for filtering is filled between the outer filter cartridge and the inner filter cartridge; a filter layer for filtering is provided between the inner filter cartridge and the pumping core pipe; outside the outer filter cartridge Wrapped with steel gauze for filtration.

Further, the filter includes a filter body, the filter body is a hollow structure, a filter cavity is arranged in the filter body, and a filter cavity is arranged in the filter cavity to divide the filter cavity into an upper filter cavity and an upper filter cavity. The inner filter plate of the lower filter chamber; the filter body is provided with a second water inlet pipe communicated with the upper filter chamber and a second outlet pipe communicated with the lower filter chamber; have valves;

The second water outlet pipe is connected with the sampling bottle through a shunt pipe.

Further, the distribution pipe includes a third water inlet pipe and at least one branch flow pipe; the third water inlet pipe is connected to the second water outlet pipe through a communication pipe, and the branch flow pipe is connected to the sampling bottle through a communication pipe connect;

A valve for switching is arranged on the branch flow pipe.

Further, the sampling bottle is provided with a fourth water inlet pipe and an exhaust pipe for exhaust or water; the fourth water inlet pipe communicates with the branch flow pipe through a communication pipe; on the exhaust pipe A valve is provided.

Further, the filter main body is provided with a liquid feeder, a liquid feed pipe communicating with the lower filter chamber is provided on the liquid feeder, and a valve is provided on the liquid feed pipe.

The groundwater integrated sampling device provided by the utility model, when in use, the main body of the sampling device reaches a predetermined depth, and the groundwater at the depth is extracted by using a piston pump, and the water sample is sent to a filter, and after filtering (adding a stabilizer according to the situation) ) into different sampling bottles for storage;

During the whole sampling process, the device performs multiple filtrations on the groundwater samples, which can remove sediment and other tiny impurities and ensure the cleanliness and stability of the water samples;

From the collection, extraction, filtration, addition of reagents to storage of groundwater, the whole set of equipment effectively isolates the contamination of air and other water bodies, and effectively prevents the change of redox state of water samples and the volatilization of dissolved gases, ensuring the composition of water samples The original steady state and the accuracy of the collected data;

The whole sampling process, integrated flow operation, increases the sampling water volume, speeds up the sampling rate, and reduces time and labor costs;

The application range of the groundwater integrated sampling device of the utility model is expanded, especially for middle and low permeability aquifers, the cost of drilling and high-power pump electricity is reduced, the integrated pretreatment process is convenient and efficient in operation, and the properties of water samples are preserved.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is a schematic structural view of a groundwater integrated sampling device provided by an embodiment of the present invention;

Fig. 2 is the structural representation of the piston pump of a kind of groundwater integrated sampling device shown in Fig. 1;

Fig. 3 is a schematic structural view of the main body of the sampling device of the integrated groundwater sampling device shown in Fig. 1;

Fig. 4 is another kind of structural representation of the sampling device main body of a kind of groundwater integrated sampling device shown in Fig. 1;

Fig. 5 is the structural representation of the filter of a kind of groundwater integrated sampling device shown in Fig. 1;

Fig. 6 is a schematic structural view of a sampling bottle of the groundwater integrated sampling device shown in Fig. 1 .

Reference signs:

1 - piston pump; 2 - main body of sampling device; 3 - filter;

4 - sampling bottle; 5 - shunt tube; 6 - push-pull rod;

7-piston; 8-internal orifice plate; 9-outlet pipe;

10-container chamber; 11-water storage chamber; 12-restricted orifice shell;

13 - water stop ball; 14 - water inlet pipe; 15 - drill pipe;

16 - pumping core pipe; 17 - inner filter cartridge; 18 - outer filter cartridge;

19 - auger; 20 - upper filter cavity; 21 - lower filter cavity;

22 - the second water inlet pipe; 23 - the second water outlet pipe; 24 - connecting pipe;

25-internal filter plate; 26-filler; 27-filling pipe;

28 - the third water inlet pipe; 29 - branch flow pipe; 30 - exhaust pipe;

31-the fourth water inlet pipe; 32-tank body; 33-breather pipe;

34 - the first water intake pipe; 35 - pressure gauge; 36 - valve;

37 - seal blocked.

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

As shown in Figures 1 and 2, the groundwater integrated sampling device provided in this embodiment includes a sampling device main body 2 for collecting ground water, a piston pump 1 connected to the sampling device main body 2, and a filter 3 for filtering ground water; A sampling bottle 4 for sampling is connected to the filter 3;

Piston pump 1 comprises pump body, push-pull rod 6 and the piston 7 that is arranged in pump body; The inner partition orifice plate 8 of the water storage chamber 11 of water; the water inlet pipe 14 communicating with the water storage chamber 11 is arranged on the pump body, and the water inlet pipe 14 is connected with the main body 2 of the sampling device;

The lower end of the push-pull rod 6 is connected with the piston 7 through the perforation provided on the pump body;

A water stop ball 13 for blocking the water inlet pipe 14 is arranged in the water storage chamber 11; a limiting hole shell 12 for limiting the movement range of the water stop ball 13 is arranged in the water storage chamber 11;

The pump body is provided with a water outlet pipe 9 communicating with the water storage chamber 11, and the water outlet pipe 9 is connected with the filter 3 through a communication pipe 24;

In this embodiment, the sampling device main body 2 is connected to the sampling device main body 2 through the piston pump 1. After the sampling device main body 2 collects the ground water, the ground water is discharged into the filter 3 through the piston pump 1. After being filtered by the filter 3, the ground water flows into the sampling bottle. In 4, the sampling and collection of groundwater is completed.

The push-pull rod 6 pushes the piston 7 to move in the cavity 10. When the piston 7 moves upward, the water-stop ball 13 does not block the water inlet pipe 14, and groundwater can flow into the water storage chamber 11 through the water inlet pipe 14; when the push-pull rod 6. When the piston 7 is driven to move downward, due to the effect of the air pressure, the water stop ball 13 is pressed against the water inlet pipe 14 by the air pressure, so that the water in the water storage chamber 11 will not flow out from the water inlet pipe 14, but will flow out from the water outlet pipe 9. There is a check valve on the water pipe 9, so the water in the water storage chamber 11 can only flow out from the water outlet pipe 9, and cannot flow into the water storage chamber 11 from the water outlet pipe 9.

There are a plurality of holes on the restricting orifice shell 12, and water and gas can flow in and out from the restricting orifice shell 12; the restricting orifice shell 12 limits the water stop ball 13 to the water inlet pipe 14, ensuring that when the piston 7 moves downward, it can quickly Block the water inlet pipe 14 to prevent groundwater from flowing out from the water inlet pipe 14.

During the whole process, the air is isolated and the mixing of other water bodies is prevented, the change of the oxygen reduction state of the water sample and the volatilization of dissolved gas are effectively prevented, and the original stable state of the water sample composition and the accuracy of the collected data are guaranteed.

Referring to Fig. 3, further, the sampling device main body 2 includes a tank body 32 for collecting groundwater and a pressure gauge 35 arranged on the tank body 32 for measuring pressure; the tank body 32 is provided with a ventilation pipe 33 for ventilation The first water intake pipe 34 communicating with the water inlet pipe 14; the vent pipe 33 and the first water intake pipe 34 are both provided with a valve 36.

In this embodiment, the tank body 32 is provided with a pressure gauge 35 for measuring the internal pressure of the tank body 32, and the vent pipe 33 can discharge the gas in the tank body 32 by connecting the piston pump 1, so that the inside becomes a negative pressure state. It is beneficial for the groundwater outside the tank body 32 to flow into the tank body 32; the first water intake pipe 34 communicates with the water inlet pipe 14, and when water needs to be drawn, the groundwater in the tank body 32 is taken out by the piston pump 1.

The tank body 32 is a clay tank. The clay tank has a dense micro-pore structure, which has a good effect of "water catchment and mud protection" for the collection of groundwater in low-permeability sediment layers; low cost and good water catchment effect, especially suitable for low-permeability mudflats Long-term observation and collection of medium and groundwater samples; the tank body 32 can also be made of sintered PE material, which is a microporous material sintered by low-pressure ultra-high molecular weight polyethylene material, which also has a good interception and filtration effect on ultra-precision particles.

When in use, the tank body 32 is buried at a predetermined depth, the vent pipe 33 is connected to the piston pump 1, the valve 36 on the vent pipe 33 is opened, the valve 36 on the first water intake pipe 34 is closed, and the push-pull rod 6 is pushed and pulled. , so that the gas in the tank body 32 is drawn out; after the gas extraction is completed, the valve 36 on the vent pipe 33 is closed; the inside of the tank body 32 is in a negative pressure state, and it is static for a period of time. The increase of the readings is used to obtain the volume of groundwater collected in the tank body 32. If the water volume is less than the sampling volume, check the pressure gauge 35 irregularly and repeatedly reduce the pressure in the tank body 32; The air pipe 33 and the valve 36 on the first water intake pipe 34; the groundwater in the tank body 32 is transported to the filter 3 by the piston pump 1 for sampling.

Referring to Fig. 3, further, the tank body 32 is provided with an opening, and a sealing plug 37 is provided at the opening, and the ventilation pipe 33, the first water intake pipe 34 and the pressure gauge 35 are all inserted into the tank body 32 through the sealing plug 37. middle;

The lower ends of the ventilation pipe 33 and the pressure gauge 35 are located at the upper part of the tank body 32 , and the lower ends of the first water intake pipe 34 are located at the lower part of the tank body 32 .

In this embodiment, the upper opening of the tank body 32 is provided with a plugging plug 37 for plugging, which can ensure the sealing of the tank body 32. On the plugging plug 37, a vent pipe 33 for ventilation and a first water intake pipe 34 are provided. And pressure gauge 35, the first water intake pipe 34 goes deep into tank body 32 inner depths, when sampling like this, can take out the groundwater inside tank body 32, what can the groundwater collection of tank body 32 be cleaner; Ventilation pipe 33 lower ends Located at the upper end of the inside of the tank body 32, when the tank body 32 is pumped repeatedly, it will prevent the collected groundwater from being sucked away.

Referring to FIG. 4 , further, the lower end of the sampling device main body 2 is provided with an auger 19 for going deep into the ground, and the upper end of the sampling device main body 2 is provided with a drill rod 15 for rotating the sampling device main body 2 .

In this embodiment, an auger 19 is provided at the lower end of the sampling device main body 2, and the entire sampling device main body 2 is rotated by the drill rod 15. By rotating the auger 19, the sampling device main body 2 can go deep into the ground to collect and sample groundwater.

Based on the foregoing embodiments, further, the sampling device main body 2 includes an outer filter cartridge 18, an inner filter cartridge 17, and a pumping core pipe 16; an inner filter cartridge 17 is arranged in the outer filter cartridge 18, and There is a pumping core pipe 16;

The drill rod 15 is a hollow structure, and two openings are arranged on the drill rod 15 , one opening is communicated with the pumping core pipe 16 , and the other opening is communicated with the water inlet pipe 14 through the communication pipe 24 .

In this embodiment, a plurality of filter holes are provided on the outer filter cartridge 18 and the inner filter cartridge 17, and the center of the inner filter cartridge 17 is provided with a pumping core pipe 16, which is connected to the drill pipe 15, and the piston pump 1 Connect the drill pipe 15 through the connecting pipe 24, and transport the groundwater collected in the inner filter cartridge 17 to the piston pump 1 through the drill pipe 15 with the pumping core pipe 16 to realize the collection of groundwater.

On the basis of the foregoing embodiments, further, coarse sand for filtering is filled between the outer filter cartridge 18 and the inner filter cartridge 17; a filter layer for filtering is provided between the inner filter cartridge 17 and the pumping core pipe 16; The filter cartridge 18 is wrapped with a filter screen for filtering.

In order to collect cleaner groundwater, the space between the outer filter cartridge 18 and the inner filter cartridge 17 is filled with coarse sand, and a filter element or a pure sponge are set between the inner filter cartridge 17 and the pumping core pipe 16; Wrap the filter, and the filter can use micro-mesh steel gauze; in this way, the filter, coarse sand and sponge form a three-stage filter, so that the collected groundwater can initially filter out impurities. In addition to the purpose of filtering, the filter element and pure sponge can also There is the purpose of holding water, so that the filter core and sponge collect groundwater in the inner filter cartridge 17, which is beneficial to the suction core pipe 16 to absorb water in the inner filter cartridge 17.

Referring to Fig. 5, further, the filter 3 includes a filter body, the filter body is a hollow structure, a filter chamber is provided in the filter body, and a filter chamber is provided in the filter chamber to divide the filter chamber into an upper filter chamber 20 and a filter chamber. The inner filter plate 25 of the lower filter chamber 21; the filter body is provided with a second water inlet pipe 22 communicated with the upper filter chamber 20 and a second water outlet pipe 23 communicated with the lower filter chamber 21; on the second water outlet pipe 23 provided with a valve 36;

The second water outlet pipe 23 is connected with the sampling bottle 4 through the shunt pipe 5 .

In this embodiment, the main body of the filter is a hollow structure, and the piston pump 1 discharges the collected groundwater into the upper filter chamber 20 through the outlet pipe 9, and after being filtered by the inner filter plate 25, the groundwater enters the lower filter chamber 21. In order to better filter the groundwater, a cellulose acetate membrane for filtering is laid on the inner filter plate 25 to achieve the purpose of the fourth layer of finely filtering the groundwater.

Volume scale is marked on the outer wall of the filter main body; wherein the second water inlet pipe 22 is arranged on the top cover on the filter main body, and the top cover is threadedly connected with the filter main body; it is convenient to replace the inner filter plate 25 for laying filter membrane; the upper part of the filter main body is cylindrical, and the lower part is funnel-shaped. When the reagent is added to the funnel-shaped filter main body through the liquid adder 26, the funnel-shaped filter main part can play a role in the water sample and the filter body. The effect of uniform mixing of added reagents.

Referring to Fig. 6, further, the branch pipe 5 includes a third water inlet pipe 28 and at least one branch flow pipe 29; the third water inlet pipe 28 is connected with the second water outlet pipe 23 through the communication pipe 24, and the branch flow pipe 29 is connected through the communication pipe 24 is connected with sampling bottle 4;

A valve 36 for switching is provided on the branch flow pipe 29 .

In order to be able to connect a plurality of sampling bottles 4, the second outlet pipe 23 is connected to a plurality of sampling bottles 4 through the shunt pipe 5, and a plurality of branch flow pipes 29 can be set on the third water inlet pipe 28 of the shunt pipe 5, each branch flow pipe 29 Connect a sampling bottle 4; Can sample a plurality of like this; All be provided with valve 36 on each branch flow pipe 29, cooperate between each valve 36, guarantee that every time groundwater only can flow in a sampling bottle 4, in After one sampling bottle 4 collects the sample, the groundwater flows into the next sampling bottle 4 by regulating the valve 36, so that multiple samples can be taken in turn.

Based on the foregoing embodiment, further, the sampling bottle 4 is provided with a fourth water inlet pipe 31 and an exhaust pipe 30 for exhaust or water; the fourth water inlet pipe 31 communicates with the branch flow pipe 29 through the communication pipe 24 ; The exhaust pipe 30 is provided with a valve 36 .

In the present embodiment, the sampling bottle 4 is provided with an exhaust pipe 30 for discharging gas in the sampling bottle 4, and the branch flow pipe 29 communicates with the fourth water inlet pipe 31. The valves 36 on the corresponding branch flow pipes 29 close the valves 36 on other branch flow pipes 29, the groundwater is filtered through the filter 3, flows into the third water inlet pipe 28 by the second water outlet pipe 23, and passes through the branch valve 36 that has been opened. The branch pipe 29 flows into the sampling bottle 4, and the valve 36 on the exhaust pipe 30 on the sampling bottle 4 is also opened at this moment, and when the groundwater flows into the sampling bottle 4 like this, the gas in the sampling bottle 4 is discharged from the exhaust pipe 30. When the sampling is completed, the valve 36 on the exhaust pipe 30 is closed to prevent air from entering the sampling bottle 4 from the exhaust pipe 30 and affecting the sample.

After sampling in the sampling bottle 4, disconnect the connecting pipe 24 connected between the branch flow pipe 29 and the fourth water inlet pipe 31, and then seal it up.

Two branch flow pipes 29 can be set on the third water inlet pipe 28 on the flow pipe 5, so that each branch flow pipe 29 is connected with a sampling bottle 4, so that when in operation, samples can be taken in turn, and one sampling bottle 4 After sampling, when the sampling bottle 4 is replaced, the sampling bottle 4 on the other branch flow pipe 29 continues sampling; repeated alternate sampling like this can collect multiple samples.

Based on the above-mentioned embodiment, further, the filter body is provided with a liquid feeder 26, and a liquid feed pipe 27 communicating with the lower filter chamber 21 is provided on the liquid feeder 26, and a liquid feed pipe 27 is provided on the liquid feed pipe 27. valve 36.

In this embodiment, the filter 3 is provided with a liquid feeder 26 for adding liquid, and there is a reagent (such as: acid, chloroform or other stabilizers) for adding in the feeder, and the reagent is passed through the liquid feeder in proportion. The pipe 27 is injected into the lower filter cavity 21, and the groundwater sample is evenly mixed in the lower filter cavity 21, effectively avoiding air contact and contamination by other impurities.

Also mark volume scale on the liquid adder 26, can control the ratio of adding reagent like this.

The groundwater integrated sampling device provided by the utility model, when in use, the main body 2 of the sampling device reaches a predetermined depth, utilizes the piston pump 1, extracts the groundwater at the depth, and sends the water sample to the filter 3, after filtering (according to the situation) Add the water sample of stabilizing agent), enter in different sampling bottles 4 by shunt pipe 5 and seal up;

During the whole sampling process, the device performs multiple filtrations on the groundwater samples, which can remove sediment and other tiny impurities and ensure the cleanliness and stability of the water samples;

From the collection, extraction, filtration, addition of reagents to storage of groundwater, the whole set of equipment effectively isolates the contamination of air and other water bodies, and effectively prevents the change of redox state of water samples and the volatilization of dissolved gases, ensuring the composition of water samples The original steady state and the accuracy of the collected data;

The whole sampling process, integrated flow operation, increases the sampling water volume, speeds up the sampling rate, and reduces time and labor costs;

The application range of the groundwater integrated sampling device of the utility model is expanded, especially for medium and low permeability aquifers, the cost of electricity for drilling and high-power pumps is reduced, the integrated pretreatment process is convenient and efficient in operation, and the properties of water samples are preserved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. A groundwater integrated sampling device is characterized in that it comprises a sampling device main body for collecting ground water, a piston pump connected to the sampling device main body and a filter for filtering ground water; Sampling vials for sampling; The piston pump includes a pump body, a push-pull rod and a piston disposed in the pump body; the pump body is a hollow structure, and the pump body is provided with a cavity and a cavity for the piston to move up and down. The internal partition orifice plate of the water storage chamber for water storage; the pump body is provided with a water inlet pipe communicating with the water storage chamber, and the water inlet pipe is connected to the main body of the sampling device; The lower end of the push-pull rod is connected to the piston through a perforation provided on the pump body; A water-stop ball for blocking the water inlet pipe is arranged in the water storage chamber; a restrictive hole shell is arranged in the water-storage chamber to limit the movement range of the water-stop ball; The pump body is provided with a water outlet pipe communicating with the water storage chamber, and the water outlet pipe is connected with the filter through a communication pipe; a check valve for restricting the flow of water is arranged on the water outlet pipe. 2. The groundwater integrated sampling device according to claim 1, wherein the sampling device main body comprises a tank body for collecting ground water and a pressure gauge arranged on the tank body for measuring pressure; A ventilation pipe for ventilation and a first water intake pipe communicating with the water inlet pipe are provided; valves are provided on the ventilation pipe and the first water intake pipe. 3. The groundwater integrated sampling device according to claim 2, characterized in that, the tank body is provided with an opening, and a sealing plug is provided at the opening, and the ventilation pipe, the first water intake pipe and the The pressure gauges are all inserted into the tank body through the plug; The vent pipe and the lower end of the pressure gauge are located at the upper part of the tank body, and the lower end of the first water intake pipe is located at the lower part of the tank body. 4. The groundwater integrated sampling device according to claim 1, characterized in that, the lower end of the sampling device main body is provided with an auger for going deep into the ground, and the upper end of the sampling device main body is provided with a screw for rotating the sampling device main body. drill pipe. 5. The groundwater integrated sampling device according to claim 4, wherein the sampling device main body comprises an outer filter cartridge, an inner filter cartridge and a pumping core pipe; an inner filter cartridge is arranged in the outer filter cartridge, and in the outer filter cartridge A pumping core tube is arranged in the inner filter cartridge; The drill rod is a hollow structure, and two openings are arranged on the drill rod, one of the openings communicates with the water pumping core pipe, and the other of the openings communicates with the water inlet pipe through a communication pipe. 6. The groundwater integrated sampling device according to claim 5, characterized in that, coarse sand for filtering is filled between the outer filter cartridge and the inner filter cartridge; A filter layer for filtering is provided; steel gauze for filtering is wrapped outside the outer filter cartridge. 7. The groundwater integrated sampling device according to claim 1, wherein the filter comprises a filter body, the filter body is a hollow structure, a filter cavity is arranged in the filter body, and the The filter chamber is provided with an inner filter plate that separates the filter chamber into an upper filter chamber and a lower filter chamber; the filter body is provided with a second water inlet pipe that communicates with the upper filter chamber and communicates with the lower filter chamber. the second water outlet pipe; a valve is arranged on the second water outlet pipe; The second water outlet pipe is connected with the sampling bottle through a shunt pipe. 8. The groundwater integrated sampling device according to claim 7, wherein the shunt pipe comprises a third water inlet pipe and at least one branch flow pipe; the third water inlet pipe connects with the second water outlet pipe through a connecting pipe connected, the branch flow pipe is connected with the sampling bottle through a communication pipe; A valve for switching is arranged on the branch flow pipe. 9. The groundwater integrated sampling device according to claim 8, characterized in that, the sampling bottle is provided with a fourth water inlet pipe and an exhaust pipe for exhaust or water; the fourth water inlet pipe is connected with the The branch flow pipes are communicated through the communication pipes; valves are arranged on the exhaust pipes. 10. The groundwater integrated sampling device according to any one of claims 7-9, characterized in that, the filter body is provided with a liquid adder, and the liquid adder is provided with a filter connected to the lower filter chamber. A liquid feeding pipe is provided with a valve on the liquid feeding pipe.