CN211013631U - Sampling device - Google Patents

Abstract

The utility model provides a sampling device, which comprises a controller, a sampling box for storing a water sample, a water delivery channel for delivering the water sample into the sampling box, and an air exhaust part for driving the water sample to flow into the sampling box from the water delivery channel; the collection box comprises a box body with a plurality of liquid collecting cavities, a cover body with the cavities and a fixing plate arranged on the box body, wherein cover plates are plugged on the liquid collecting cavities, and floating balls are arranged in the liquid collecting cavities. The sampling device of the utility model can exhaust each liquid collecting cavity and cavity through the air exhaust part, and can drive water samples with different water depths to flow into the corresponding liquid collecting cavities; and through the floater in the collection liquid intracavity of the full water appearance of collection shutoff to the through-hole on the apron, when stopping that the water sample flows into it, still can not influence the collection of the not full other collection liquid intracavity water samples of collection, this sampling device has convenient to use, and collection effect is good, and the advantage that collection efficiency is high, has better popularization meaning.

Description

Sampling device

Technical Field

The utility model relates to a water sample collection equipment technical field, in particular to sampling device.

Background

The water sample monitoring refers to the monitoring of physical properties, metallic compounds, non-metallic inorganic substances, organic compounds, biological monitoring, hydrological and meteorological parameters and substrate monitoring of environmental water bodies (rivers, lakes, reservoirs, underground water and the like) and water pollution sources (domestic sewage, hospital sewage, industrial sewage and the like).

In order to detect the parameters of the water body comprehensively, the water bodies with different depths are required to be collected generally, devices capable of collecting different water bodies are arranged in the prior art, and water samples with different depths can be collected into different liquid storage cavities. However, due to different water depths, when water samples are collected, the collecting speed of the water samples in the liquid storage cavities is different, so that the situation that each liquid storage cavity is full of the water sample cannot be guaranteed, the sampling effect is poor, and the sampling efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a sampling device to can gather the water sample of the different degree of depth, and have better sampling effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a sampling device configured to collect water samples at different depths, comprising:

a controller;

the sampling box comprises a box body, a cover body and a fixing plate, wherein the cover body is arranged at the top of the box body, the fixing plate is arranged on the box body and extends downwards, a plurality of liquid collecting cavities are formed in the box body in a spaced mode, and a cover plate for plugging each liquid collecting cavity is detachably arranged on the box body; a cavity is formed on the cover body, a pressure sensor electrically connected with the controller is arranged in the cavity, and the cavity is communicated with the liquid collecting cavities through holes formed in the cover plates; a floating ball is arranged in each liquid collecting cavity, and the floating ball can form a plug corresponding to the through hole due to the buoyancy of a water sample flowing into the liquid collecting cavity;

the water delivery channel comprises water outlet pipes which are arranged on the box bodies corresponding to the liquid collecting cavities, a plurality of water inlet pipes which are arranged on the fixing plate and are arranged at intervals along the height direction of the fixing plate, and communicating water pipes which form communication between the water inlet pipes and the water outlet pipes;

and the air exhaust part is arranged on the cover body and electrically connected with the controller so as to exhaust the air in the cavity and each liquid collecting cavity and drive a water sample to flow into the corresponding liquid collecting cavity from the water delivery channel.

Furthermore, the cover plate is provided with air pipes positioned in the through holes, the floating ball is provided with a convex bulge, and the convex bulge can be inserted into the corresponding air pipe to form the blockage of the air pipe.

Furthermore, corresponding to each air pipe, a guide pipe is fixedly arranged in the box body, the floating ball slides in the guide pipe in a guiding mode, and a plurality of hollow holes which are arranged at intervals are formed in the circumferential direction of the guide pipe.

Furthermore, one end of the air pipe inserted into the liquid collecting cavity is arranged to be conical, and the bulge is arranged along with the air pipe.

Furthermore, a plurality of air holes are formed in the conical circumferential surface of the air pipe at intervals, and the protrusions can be used for plugging the air holes.

Furthermore, corresponding to the water outlet pipe, mounting blocks are arranged on the box body, and the communication water pipes penetrate through the mounting blocks.

Furthermore, the end of intaking of inlet tube via the mounting panel install in on the fixed plate, in be equipped with on the fixed plate along its length direction extension set up the slotted hole, and in be equipped with the mounting hole on the mounting panel, the mounting panel via wearing through the mounting hole with the fastener of slotted hole links firmly in on the fixed plate.

Furthermore, the water inlet end of the water inlet pipe is clamped and fixed at one end of the mounting plate and is perpendicular to the fixing plate.

Furthermore, the fixing plate is provided with scales arranged along the height direction of the fixing plate, and one end of the mounting plate, which is far away from the water inlet pipe, is set to be pointed.

Furthermore, the fixed plate is U-shaped, and two adjacent mounting plates are arranged on two sides of the fixed plate in a staggered manner in the height direction.

Compared with the prior art, the utility model discloses following advantage has:

(1) sampling device, bleed in to box and the lid through the portion of bleeding, the water sample that can order about different depths of water flows into the collection liquid chamber that corresponds via water delivery channel. And through set up the floater in the collection liquid chamber, can carry out the shutoff at the collection liquid intracavity of the full water appearance of collection to the through-hole on the apron, when preventing that the water sample from continuing to flow into this collection liquid chamber, still can not influence the collection of other collection liquid intracavity water samples of not fully collecting. In addition, by providing a pressure sensor electrically connected to the controller, the start/stop state of the air extraction unit can be controlled based on the sampling state of each liquid collection chamber. The sampling device has the advantages of convenience in use, good acquisition effect and high acquisition efficiency, and has better popularization significance.

(2) The air pipe and the floating ball are provided with the sliding protrusions, so that the blocking effect of the floating ball on the cover plate is improved, and the accuracy in use is improved.

(3) The guide tube can guide the floating ball in the floating process so as to ensure that the floating ball can accurately block the air pipe, and the air pipe blocking device is simple in structure and convenient to use.

(4) The conical air pipe can facilitate the insertion of the bulge on the floating ball, thereby improving the stability in use.

(5) Under the effect of extraction portion, the bleeder vent can continue to guide the water sample to flow into album liquid intracavity after the arch just inserted the trachea to do benefit to the volume of gathering of improving album liquid intracavity water sample.

(6) The installation block has simple structure, can be convenient for arrange each communicating water pipe, and is favorable for the smooth degree of the communicating water pipe in use.

(7) The relative position of the mounting plate on the oblong hole can be adjusted, so that water samples of different depths can be collected, the structure is simple, and the mounting and the adjustment are convenient.

(8) The end of intaking of inlet tube sets up with the fixed plate is perpendicular, can ensure to gather the water sample at the degree of depth that corresponds, and can do benefit to the precision of gathering the water sample.

(9) The scale can be convenient for refer to when adjusting the position of mounting panel, and the mounting panel of point form can indicate corresponding scale to convenience in the operation improves.

(10) The setting of mounting panel shape can be convenient for two adjacent mounting panels staggered arrangement from top to bottom to reduce the interference in the water sample collection, improve the precision of water sample.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a sampling device according to an embodiment of the present invention in a closed state;

fig. 2 is a schematic structural diagram of a sampling device according to an embodiment of the present invention in an open state;

fig. 3 is a schematic structural diagram of a sampling device according to an embodiment of the present invention at a viewing angle;

fig. 4 is a schematic structural diagram of a box body according to an embodiment of the present invention at a viewing angle;

fig. 5 is a schematic structural diagram of a baffle according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a mounting plate according to an embodiment of the present invention;

fig. 7 is a schematic structural view of the air tube and the floating ball according to the embodiment of the present invention;

description of reference numerals:

1-box body, 101-guide pipe, 102-baffle mounting hole;

2-cover body, 201-cover body handle;

3-gas pipe, 4-hinge, 5-communicating water pipe, 6-mounting block;

7-mounting plate, 701-indicating end, 702-clamping ring, 703-clamping end;

8-fixing plate, 801-scale, 802-slotted hole;

9-a water inlet pipe;

10-trachea, 1001-air hole;

11-cover plate, 1101-cover plate handle;

12-baffles, 1201-mounting posts;

13-water outlet pipe;

14-floating ball, 1401-guide projection and 1402-projection.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

This embodiment relates to a sampling device, is set up to the collection of the different degree of depth water samples. The sampling device comprises a controller, a sampling box, a water delivery channel and an air exhaust part, wherein the sampling box is used for storing different water samples, the water delivery channel is used for conveying the water samples to the sampling box, and the air exhaust part is used for driving the water samples to flow into the sampling box through the water delivery channel.

Based on the design concept of the sampling device, an exemplary structure of the sampling device in this embodiment is shown in fig. 1 and fig. 2, the controller is a P L C controller in the prior art, the structure is mature, the use is convenient, and the control effect is good, the sampling box comprises a box body 1 and a cover body 2 installed at the top of the box body 1, wherein four liquid collecting cavities are formed in the box body 1 at intervals for collecting and storing water samples with four depths, in this embodiment, a cover plate 11 for plugging each liquid collecting cavity is detachably installed on the box body 1, and a through hole is formed in each cover plate 11 to form communication between each liquid collecting cavity and the following cavity, in order to improve the installation accuracy of the cover plate 11 on the box body 1, in this embodiment, an installation groove is formed on the box body 1 at the edge of the opening of the liquid collecting cavity, and the bottom of the cover plate 11 is placed in the installation groove and installed on the box body 1 through a baffle plate 12.

The structure of the baffle 12 is shown in fig. 2 and fig. 5, a mounting column 1201 is configured in the middle of the baffle 12, baffle mounting holes 102 are configured between two adjacent cover plates 11 and outside two outermost cover plates 11, and each baffle 12 is screwed on the baffle mounting holes 102 through the mounting column 1201 on the baffle 12, so that two ends of the baffle 12 respectively abut against the corresponding cover plate 11 in a mounting state. Further, a cover handle 1101 is formed on the outer surface of each cover 11. When the cover plate 11 needs to be taken out, the baffle plate 12 only needs to be screwed between the two cover plates 11, and the arrangement is favorable for improving the convenience of the cover plates 11 in installation and disassembly. It should be noted that the number of the liquid collecting chambers in the present embodiment can be adjusted according to specific use requirements, and the number of the cover plates 11 and the number of the baffle plates 12 are adapted to the number of the liquid collecting chambers.

Continuing with fig. 1, the lid 2 and the base 1 are pivotally connected by a hinge 4, and the through-hole is provided in the lid 11 remote from the hinge 4. And a cavity is constructed on the cover plate 11 and is communicated with each liquid collecting cavity through a through hole arranged on each cover plate 11 so as to drain the water sample under the driving of the air exhaust part. Wherein, the cross-section of cavity is the taper structure that the point portion set up upwards to do benefit to the result of use that improves the portion of bleeding.

Because the sampling box is when gathering the water sample, needs airtight setting between lid 2 and box 1 to improve the effect and the efficiency of water sample collection. Therefore, in the present embodiment, an annular groove is formed on the upper peripheral surface of the case 1, and an annular projection that can be fitted into the annular groove is formed on the lower peripheral surface of the lid 2. Here, through the cyclic annular protruding inlay dress in the annular groove and guarantee the sealing connection between lid 2 and box 1, its simple structure, the shaping is convenient, and sealed effectual. In addition, a lid handle 201 is further formed on the other side surface of the lid body 2 with respect to the hinge 4, so that a user can adjust the open and closed states of the lid body 2.

The air extraction part is specifically an air extraction pump which is arranged on the cover body 2 and is electrically connected with the controller, the air extraction pump is the air extraction pump in the prior art and is communicated with an air delivery pipe 3 arranged at the top of the cover body 2, so that under the condition of receiving a starting signal sent by the controller, air in the cavity and each liquid collection cavity is extracted to drive a water sample to flow into the corresponding liquid collection cavity from the water delivery channel; and can stop working after receiving the stop signal sent by the controller.

In this embodiment, be equipped with the fixed plate 8 that downwardly extending set up on the back of box 1, a plurality of inlet tubes 9 described below are installed respectively on fixed plate 8 to use the insertion of fixed plate 8 in the water, thereby realize the collection to the different degree of depth water samples. The water delivery channel comprises a water outlet pipe 13 which is arranged on the box body 1 corresponding to each liquid collecting cavity, a plurality of water inlet pipes 9 which are arranged on the fixing plate 8 and are arranged at intervals along the height direction of the fixing plate, and a communicating water pipe 5 which is used for communicating each water inlet pipe 9 and the corresponding water outlet pipe 13.

In the concrete structure, as shown in fig. 2 to 4, each water outlet pipe 13 is approximately in the shape of L so as to guide a water sample to a corresponding liquid collecting cavity, and each water outlet pipe 13 and a through hole on the cover plate 11 are oppositely arranged so as to reasonably utilize the space of the box body 1. in addition, a mounting block 6 which is convexly arranged is arranged on the outer side surface of the box body 1 corresponding to the water outlet pipe 13, each communicating water pipe 5 is communicated with a round hole penetrating through the mounting block 6.

In the embodiment, the water inlet ends of the water inlet pipes 9 are mounted on the fixing plate 8 through the mounting plates 7, in order to improve the accuracy of water sample collection of the water inlet pipes 9 at the corresponding water depth, each water inlet pipe 9 is also approximately in a shape of L, so that the water inlet end of each water inlet pipe is perpendicular to the fixing plate 8, and in order to reduce the influence of the water samples of the two adjacent water inlet pipes 9 during water sample collection, the accuracy of collection is improved, in the embodiment, the two adjacent mounting plates 7 are mounted on the fixing plate 8 in a staggered manner in the height direction, referring to fig. 1 and 4, the fixing plate 8 in the embodiment is in a shape of U, the two adjacent mounting plates 7 are mounted on two sides of the fixing plate 8 in a vertically staggered manner, long circular holes 802 extending along the length direction of the fixing plate 8 are formed on two sides of the fixing plate 8, and two mounting holes are formed in the mounting plates 7, and the mounting plates 7 are fixedly connected to the fixing plate 8 through fasteners penetrating through the two mounting holes and the long circular holes 802.

The above-described mounting plate 7 is constructed as shown in fig. 7, and two clamp half rings are formed at one end of the mounting plate 7 in the middle of the fixing plate 8 to be arranged opposite to each other, and a clamping end 703 is formed at the free end of each clamp half ring. The two clamping semi-rings are enclosed to form a clamping ring 702, the water inlet end of each water inlet pipe 9 is clamped in the corresponding clamping ring 702, and the clamping rings are fastened and connected by a fastening piece penetrating through the clamping end 703 and then are installed and fixed on the fixing plate 8. At this time, the water inlet end of each water inlet pipe 9 is positioned in the middle of the fixing plate 8. In addition, scales 801 are provided along the height direction of the fixed plate 8 on both sides, respectively, and an indication end 701 of the mounting plate 7 away from the inlet pipe 9 is provided in a pointed shape in order to indicate the scales 801.

It should be noted that in this embodiment, the shape of the fixing plate 8 may be a flat plate in addition to the above-mentioned "U" shape, in this case, two water inlet pipes 9 adjacent to each other up and down are preferably arranged on both sides of the fixing plate 8 in a staggered manner, and in this case, the scale 801 is arranged in the middle of the fixing plate 8, and the indication end 701 of each mounting plate 7 is disposed toward the scale 801. In addition, foretell fastener can be the bolt and the nut among the prior art, and its structure is ripe, and the purchase is convenient, and fastening effect is good.

In the embodiment, in order to ensure that the water collecting cavities can collect full water samples, the floating balls 14 are further arranged in the water collecting cavities, and the floating balls 14 can block the corresponding through holes due to buoyancy of the water samples flowing into the water collecting cavities. After the floating ball 14 in the liquid collecting cavity blocks the through hole due to the buoyancy of the water sample, the water sample does not flow into the liquid collecting cavity under the action of the air pump, and the water sample continues to be driven to flow into the liquid collecting cavity which is not fully collected until the floating ball 14 blocks the corresponding through hole.

Based on the design concept of the float 14, in the present embodiment, as shown in fig. 3 and 4, the air pipe 10 is mounted on the cover plate 11 and positioned in each through hole, the top end of the air pipe 10 is fixed to the cover plate 11 in an embedded manner, and the bottom end thereof is inserted into the liquid collecting chamber. The floating ball 14 is provided with a convex projection 1402, and the projection 1402 can be inserted into the corresponding air tube 10 to form a plug for the air tube 10. Here, the air tube 10 is blocked by the floating ball 14, that is, the through hole is blocked. In order to improve the stability of the floating ball 14 in use and ensure the blocking effect of the floating ball 14 which floats in place on the air pipe 10. In this embodiment, a guide tube 101 is fixedly provided in the housing 1 corresponding to each air tube 10, and the float 14 is guided to slide in the guide tube 101 by two guide protrusions 1401 formed on the outer peripheral surface thereof. Meanwhile, a plurality of hollow holes are formed in the circumferential direction of the guide pipe 101 at intervals to ensure that the floating ball 14 moves upwards under the buoyancy of a water sample.

Referring to fig. 7, in this embodiment, the end of the air tube 10 inserted into the liquid collecting chamber is formed in a tapered shape, and a projection 1402 is formed along with the air tube 10. Here, the tapered air tube 10 facilitates the insertion of the protrusion 1402 on the floating ball 14, thereby improving stability in use. In addition, a plurality of air holes 1001 arranged at intervals are formed in the tapered peripheral surface of the air pipe 10, and when the protrusion 1402 is just inserted into the air pipe 10, the air pipe 10 can exhaust air from the liquid collection cavity through the air holes 1001, so that the liquid collection amount in the liquid collection cavity is increased. After the bumps 1402 are moved into place, a plug can be constructed to each vent 1001 to ensure that no water sample can flow into the collection chamber.

In addition, in this embodiment, a pressure sensor is installed inside the cover body 2, and if the pressure sensor is close to the gas pipe 3, the pressure sensor is installed on the inner wall surface of the cover body 2, so as to collect a pressure signal in the cavity. The pressure sensor is a pressure sensor in the prior art, and can be electrically connected with the controller so as to send the acquired pressure signal to the controller. And the controller compares the received pressure signal with the standard atmospheric pressure to control the starting and stopping states of the air pump. If the pressure value in the cavity calculated by the controller is greater than the standard atmospheric pressure, a signal for continuing working is sent to the air pump, and air extraction and sampling are continued; if the pressure value in the cavity calculated by the controller is smaller than the standard atmospheric pressure, a signal for stopping working is sent to the air pump, and sampling is finished. If all the floating balls 14 on the surface are plugged on the cover plate 11, namely all the water samples in all the liquid collecting cavities are fully collected, the controller sends a signal for stopping air suction to the air suction pump, and the air suction pump stops air suction. On the contrary, the air pump works continuously to extract the water sample to flow into the liquid collecting cavity.

When the sampling device described in this embodiment is used, firstly, the fixing plate 8 with the water inlet pipe 9 installed is inserted into the water body to be sampled, and the cover body 11 is sealed on the box body 1. Then, the extraction pump is started, and the water samples with corresponding depths are input into the liquid collection cavity through the water inlet pipes 9. The pressure sensor collects the pressure value in the cavity in real time and sends the data to the controller, and the controller sends a signal for continuous work to the air pump. Along with the increase of water samples in the liquid collecting cavity, the floating ball 14 moves upwards along the guide pipe due to buoyancy until the bulge 1402 completely blocks the air pipe 3 and the air holes 1001, and the water delivery channel corresponding to the liquid collecting cavity stops conveying the water samples. At this time, other liquid collecting cavities which are not blocked can continuously convey and collect the water sample under the driving of the air pump until the floating ball 14 in the water collecting cavities blocks the cover plate 11. When the pressure value detected by the pressure sensor is close to vacuum, the controller sends a signal for stopping working to the air pump, the air pump stops working, and the whole sampling work is completed.

The sampling device described in this embodiment, through the aspiration pump to bleed in box 1 and the lid 2, can order about the water sample of different water depths and flow into the collection liquid chamber that corresponds via water delivery channel. And through set up floater 14 in the collection liquid chamber, can carry out the shutoff to the through-hole on the apron 11 in the collection liquid intracavity of album full water sample, when preventing that the water sample from continuing to flow into this collection liquid chamber, still can not influence the collection of other collection liquid intracavity water samples of not gathering full. In addition, by providing a pressure sensor electrically connected to the controller, the start/stop state of the air extraction unit can be controlled based on the sampling state of each liquid collection chamber. The sampling device has the advantages of convenience in use, good acquisition effect and high acquisition efficiency, and has better popularization significance.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A sampling device configured to collect water samples of different depths, comprising:

a controller;

the sampling box comprises a box body (1), a cover body (2) arranged at the top of the box body (1), and a fixing plate (8) which is arranged on the box body (1) and extends downwards, wherein a plurality of liquid collecting cavities which are arranged at intervals are formed in the box body (1), and a cover plate (11) for plugging each liquid collecting cavity is detachably arranged on the box body (1); a cavity is formed on the cover body (2), a pressure sensor electrically connected with the controller is arranged in the cavity, and the cavity is communicated with the liquid collecting cavities through holes arranged on the cover plates (11); a floating ball (14) is arranged in each liquid collecting cavity, and the floating ball (14) can form a plug corresponding to the through hole due to the buoyancy of a water sample flowing into the liquid collecting cavity;

the water delivery channel comprises water outlet pipes (13) which are arranged on the box body (1) corresponding to the liquid collecting cavities, a plurality of water inlet pipes (9) which are arranged on the fixing plate (8) and are arranged at intervals along the height direction of the fixing plate, and communicating water pipes which form communication between the water inlet pipes (9) and the water outlet pipes (13);

and the air exhaust part is arranged on the cover body (2) and is electrically connected with the controller so as to extract the air in the cavity and each liquid collecting cavity and drive a water sample to flow into the corresponding liquid collecting cavity from the water delivery channel.

2. The sampling device of claim 1, wherein: the cover plate (11) is provided with air pipes (10) positioned in the through holes, the floating ball (14) is provided with a convex bulge (1402), and the bulge (1402) can be inserted into the corresponding air pipe (10) to form a plug for the air pipe (10).

3. The sampling device of claim 2, wherein: corresponding to each air pipe (10), a guide pipe (101) is fixedly arranged in the box body (1), the floating ball (14) slides in the guide pipe (101) in a guiding mode, and a plurality of hollow holes which are arranged at intervals are formed in the circumferential direction of the guide pipe (101).

4. The sampling device of claim 2, wherein: one end of the air pipe (10) inserted into the liquid collecting cavity is arranged to be conical, and the bulge (1402) is arranged along with the air pipe (10).

5. The sampling device of claim 4, wherein: a plurality of air holes (1001) are arranged on the conical peripheral surface of the air pipe (10) at intervals, and the bulges (1402) can be used for plugging the air holes (1001).

6. The sampling device of claim 1, wherein: corresponding to the water outlet pipe (13), the box body (1) is provided with mounting blocks (6), and the water communication pipes (5) penetrate through the mounting blocks (6).

7. The sampling device of any one of claims 1 to 6, wherein: the end of intaking of inlet tube (9) via mounting panel (7) install in on fixed plate (8), in be equipped with on fixed plate (8) and extend slotted hole (802) that set up along its length direction, and in be equipped with the mounting hole on mounting panel (7), mounting panel (7) via wearing through the mounting hole with the fastener of slotted hole (802) links firmly in on fixed plate (8).

8. The sampling device of claim 7, wherein: the water inlet end of the water inlet pipe (9) is clamped and fixed at one end of the mounting plate (7) and is perpendicular to the fixing plate (8).

9. The sampling device of claim 8, wherein: scales (801) arranged along the height direction of the fixing plate (8) are arranged on the fixing plate, and one end, far away from the water inlet pipe (9), of the mounting plate (7) is arranged to be pointed.

10. The sampling device of claim 8, wherein: the fixing plate (8) is U-shaped, and two adjacent mounting plates (7) are arranged on two sides of the fixing plate (8) in a staggered mode in the height direction.

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