CN115165465A

CN115165465A - Multifunctional water quality monitoring equipment

Info

Publication number: CN115165465A
Application number: CN202210794520.9A
Authority: CN
Inventors: 亓恒振; 吕冬梅; 宋艳艳
Original assignee: Shandong Zibo Ecological Environment Monitoring Center
Current assignee: Shandong Zibo Ecological Environment Monitoring Center
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-10-11
Anticipated expiration: 2042-07-07
Also published as: CN115165465B

Abstract

The invention discloses multifunctional water quality monitoring equipment, and belongs to the technical field of water quality monitoring equipment. The utility model provides a multi-functional water quality monitoring equipment, is provided with the sampling tube including floating the case in the cavity, still includes: the sample disc arranged in the first cavity is rotated, a driving groove communicated with the sample groove is formed in the sample disc, a shifting block is fixedly connected to the side wall of the driving groove, a knocking ring is rotatably connected in the driving groove, a knocking plate is fixedly connected to the outer ring of the knocking ring and matched with the shifting block, and when the knocking ring rotates, the knocking plate is driven to cross the shifting block to knock the outer wall of the sampling bottle; the sampling head is arranged in the cavity II, a sampling hole is formed in the bottom of the cavity II, the input end of the sampling head penetrates through the sampling hole and extends to the bottom, and the sampling head is communicated with the sampling tube; the invention realizes the forward and backward sampling and hovering sampling of the floating box through three groups of circulating cylinders, removes air bubbles in the sampling bottle during sampling and improves the precision of monitoring a water sample.

Description

Multifunctional water quality monitoring equipment

Technical Field

The invention relates to the technical field of water quality monitoring equipment, in particular to multifunctional water quality monitoring equipment.

Background

The water quality monitoring is a process for monitoring and measuring the types of pollutants in the water body, the concentrations and the variation trends of various pollutants and evaluating the water quality condition. The monitoring range is very wide, and the monitoring range comprises uncontaminated and contaminated natural water, various industrial drainage water and the like. The main monitoring projects can be divided into two main categories: one is a comprehensive index reflecting the water quality conditions, such as temperature, chroma, turbidity, pH value, conductivity, suspended matters, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand and the like; the other is some toxic substances, such as phenol, cyanogen, arsenic, lead, chromium, cadmium, mercury, organic pesticides and the like.

Traditional water quality monitoring is artifical each sampling point that gets into, take a sample the water source then deposit the sample bottle to the sample and send into the laboratory, utilize special monitoring devices to monitor, this kind of mode not only wastes time and energy, and the monitoring effect is not good moreover, current online water quality monitoring device is mostly to fix water quality monitoring instrument's probe at the lakebed, this kind of mode monitoring area is limited, it is comprehensive just can monitor to need the installation multiunit probe, the monitoring cost is higher and can't take a sample the monitoring point and preserve.

In the manual sampling process, large-scale sampling such as river surface and reservoir, work load is great, especially to the river of torrential, and danger coefficient is high during the sampling to bubble appears easily in the sampling bottle of retaining water sample, causes the lower defect of follow-up water sample detection precision.

Disclosure of Invention

The invention aims to solve the defects that large-area sampling of a water area is difficult and a reserved water sample is easy to damage in the prior art, and provides multifunctional water quality monitoring equipment.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a multi-functional water quality monitoring equipment, is including floating the case, it is provided with the propulsion portion that is used for the drive to float the case removal to float bottom of the case portion, float the incasement and from top to bottom set gradually the cavity one and the cavity two of mutual intercommunication, be provided with the sampling tube in the cavity one, still include: the sample disc is rotatably arranged in the first cavity, a sample groove is formed in the sample disc, a driving groove communicated with the sample groove is formed in the sample disc, a shifting block is fixedly connected to the side wall of the driving groove, a knocking ring is rotatably connected in the driving groove, a knocking plate is fixedly connected to the outer ring of the knocking ring and matched with the shifting block, and when the knocking ring rotates, the knocking plate is driven to cross the shifting block to knock the outer wall of the sampling bottle; the setting is in sampling head in the cavity two, the thief hole has been seted up to two bottoms of cavity, the input of sampler runs through the thief hole and extends to the bottom, the sampler is linked together with the sampling tube.

In order to ensure that the sampling head can stably extract the water sample, preferably, the sampling head further comprises: rotate to be connected sleeve in the cavity two, wherein, telescopic inner wall is provided with the thread groove, be provided with on the sample connection with thread groove matched with flank of screw, the top fixedly connected with rectangular pipe of sample connection, the rectangular pipe is linked together with the sampling tube through flexible pipe, fixed connection be in the gear one and the gear two of sleeve outer wall, fixedly connected with motor one in the cavity two, the output fixedly connected with of motor one and gear two phase meshing gear four.

Furthermore, a flow guide channel is formed in the knocking ring, a vortex plate is fixedly connected in the flow guide channel, and two ends of the flow guide channel are respectively communicated with the sampling tube and the telescopic tube.

In order to accurately control the operation of the floating box, furthermore, the propelling part comprises three groups of circulating cylinders which are rotatably connected to the bottom of the floating box, the three groups of circulating cylinders are uniformly distributed at the bottom of the floating box in a circumferential manner, two ends of each circulating cylinder are fixedly connected with intercepting plates, and a turbine is arranged in each circulating cylinder.

Preferably, fixedly connected with mounting panel in the two cavitys, the top fixedly connected with motor two of mounting panel, the output fixedly connected with drive shaft of motor two, the drive shaft runs through cavity two and extends to the bottom, the one end of motor two is kept away from to circulation section of thick bamboo fixed connection at the drive shaft.

In order to ensure smooth operation of the floating box, a middle rotating drum is fixedly connected to the bottom of the mounting plate, the middle rotating drum is communicated with a sampling pipe through a circulating pipe, a control valve is arranged on the sampling pipe, a third gear is rotatably connected to the bottom of the middle rotating drum, the third gear is meshed with the first gear, a drain hole is formed in the third gear, a spiral cutting blade is fixedly connected to the drain hole, and the spiral cutting blade is attached to a driving shaft.

In order to improve the cleaning effect on the driving shaft, furthermore, the spiral cutting blades are provided with a plurality of groups, and the plurality of groups of spiral cutting blades are uniformly distributed on the water discharge hole in a circumferential manner.

In order to ensure efficient and stable sampling of the sampling head, preferably, the sampling head is internally and fixedly connected with a pump body, the output end of the pump body is communicated with the rectangular pipe, the input end of the pump body is fixedly connected with an extension pipe, and a sensor is arranged in the sampling head.

In order to ensure the stability of the sampling bottle during water storage, preferably, a mounting groove is formed in the bottom of the cavity, a spring is arranged in the mounting groove, one end of the spring is fixedly connected with a ball body, and a ball groove matched with the ball body is formed in the bottom of the sample plate.

Preferably, the top of the first cavity is in threaded connection with a cover plate, and a camera is arranged on the cover plate.

Compared with the prior art, the invention provides a multifunctional water quality monitoring device, which has the following beneficial effects:

1. the multifunctional water quality monitoring device is circumferentially and uniformly distributed at the bottom of the floating box through the three groups of circulating cylinders, each group of circulating cylinders can be independently controlled to turn to realize the forward movement, backward movement, hovering sampling and the like of the floating box, personnel do not need to launch or rowing to enter the river surface, efficient and quick water sample monitoring and sampling operation can be carried out, the safety is high, the operation is simple, and the workload is reduced;

2. the multifunctional water quality monitoring device is knocked on the outer wall of the sampling bottle through the knocking plate, so that bubbles are prevented from remaining on the inner wall of the sampling bottle when a sampling pipe above the sampling bottle conveys a water sample into the sampling bottle, and the interference of bubble infrared rays on a sampled water body during laboratory monitoring is reduced, so that the monitoring precision of the water sample is effectively improved, especially for a low-concentration sample;

3. according to the multifunctional water quality monitoring device, redundant water samples are guided to be discharged along the spiral cutting piece through the water discharge hole, on one hand, the spiral cutting piece can form a rotational flow to wash the outer wall of the circulating cylinder, on the other hand, water flow is pressed on the spiral cutting piece, so that the third gear is fixed, the sleeve is prevented from rotating during sampling, and the sampling stability is guaranteed;

4. according to the multifunctional water quality monitoring device, the cover plate is in threaded connection with the top of the first cavity, so that water can be prevented from entering the first cavity from the upper part, the camera is further arranged on the cover plate and used for observing the environment around the floating box in real time, a person can conveniently control the remote floating box on the shore, and the multifunctional water quality monitoring device can also safely and efficiently sample complex terrains;

5. this multi-functional water quality monitoring equipment through set up the sensor in the sampling head, when turbidity inductor detected the water sample turbidity when great, the sampling tube just can extract partial water sample and send to the sampling bottle in, carries out the high accuracy testing of follow-up laboratory and confirms to effectively promote work efficiency.

Drawings

FIG. 1 is a schematic structural diagram I of a multifunctional water quality monitoring device provided by the invention;

FIG. 2 is a schematic structural diagram II of a multifunctional water quality monitoring device provided by the invention;

FIG. 3 is a third schematic structural view of a multifunctional water quality monitoring device provided by the present invention;

FIG. 4 is a schematic structural view of part A in FIG. 3 of the multifunctional water quality monitoring device according to the present invention;

FIG. 5 is a schematic structural diagram of a sampling head of the multifunctional water quality monitoring device provided by the invention;

FIG. 6 is a schematic structural view of a sample tray of the multifunctional water quality monitoring device provided by the invention;

FIG. 7 is a schematic structural view of a spiral cutting blade of the multifunctional water quality monitoring device provided by the invention;

fig. 8 is a schematic structural diagram of a knocking ring of the multifunctional water quality monitoring device provided by the invention.

In the figure: 1. a floating box; 101. a first cavity; 102. a second cavity; 103. mounting a plate; 104. mounting grooves; 105. a spring; 106. a sphere; 2. a sample tray; 201. a sample tank; 202. a drive slot; 203. shifting blocks; 204. a vent hole; 205. a ball groove; 3. knocking the ring; 301. knocking the plate; 302. a flow guide channel; 303. a whirl plate; 4. a sleeve; 401. a first gear; 402. a second gear; 403. a first motor; 404. a fourth gear; 5. a sampling tube; 501. a middle rotating cylinder; 502. a circulation pipe; 6. a third gear; 601. a drain hole; 602. a spiral cutting blade; 7. a circulation cylinder; 701. a interception plate; 702. a turbine; 703. a second motor; 8. a sampling head; 801. a pump body; 802. a rectangular tube; 803. a telescopic pipe; 804. an extension pipe; 805. a sensor; 9. a cover plate; 901. a camera is provided.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-8, a multifunctional water quality monitoring device comprises a floating box 1 capable of floating on the water surface, a first cavity 101 and a second cavity 102 which are communicated with each other are sequentially arranged in the floating box 1 from top to bottom, an annular cavity is surrounded around the first cavity 101, a storage battery and a control panel which can supply energy can be installed in the annular cavity, three groups of circulating cylinders 7 submerged below the water surface are rotatably connected to the bottom of the floating box 1, the three groups of circulating cylinders 7 are circumferentially and uniformly distributed at the bottom of the floating box 1, each group of circulating cylinders 7 can be independently controlled and steered to realize forward, backward and hovering sampling of the floating box 1, and the like, and the specific control mode is that a mounting plate 103 is fixedly connected to the inside of the second cavity 102, the top of the mounting plate 103 is fixedly connected with a second motor 703, the output ends of the three groups of independently controlled second motors 703 are fixedly connected with a driving shaft, the driving shaft penetrates through the second cavity 102 to extend to the bottom, the circulating cylinders 7 are fixedly connected to one end of the driving shaft far away from the second motor 703, two ends of the circulating cylinders 7 are fixedly connected with a blocking plate 701 which allows water flow to pass through, so as to intercept sundries such as water plants in the turbine 7, the turbine 7 is arranged in the other end of the circulating cylinders 702, and the floating box 1, when the floating box 1, the floating box 1 is rotated, the floating box 1, the floating box is changed, so as the floating box, and the whole floating box is changed, and the floating box is changed in the floating box, and the floating box is formed, and the floating box is used; when the floating box 1 needs to be controlled to turn, the water inlet direction of one group of circulating cylinders 7 can be independently controlled to be consistent with the turning direction, the turning speed is low, the three groups of circulating cylinders 7 can be synchronously controlled to turn simultaneously through the second motor 703, the turning speed is high, the power is sufficient, the device is suitable for turbulent rivers, when the monitoring and sampling are needed, the turbines 702 can be closed to prevent water fluctuation, but for the turbulent flowing water or the lake surface of a reservoir with large waves, the water inlet directions of the three groups of circulating cylinders 7 can be pointed to the central line of the floating box 1, the water pumping speed of each group of turbines 702 is controlled according to the direction of the water flow, the hovering effect on the water surface is realized, and the sampling stability is ensured;

through the mode, efficient and rapid water sample monitoring and sampling operation can be performed without personnel launching or rowing to enter the river surface, the safety is high, the operation is simple, and the workload is reduced;

in addition, for sampling operation, a sampling tube 5 is arranged in the first cavity 101 and used for pumping water below the floating box 1 into a sampling bottle, for prevention of the sampling bottle, a group of sample trays 2 rotatably arranged in the first cavity 101 are arranged, sample grooves 201 are formed in the sample trays 2, four groups of the sample grooves 201 are formed in the sample grooves 201, the four groups of the sample grooves 201 are circumferentially and uniformly distributed on the sample trays 2, the sampling bottle is placed in the sample groove 201, a driving groove 202 communicated with the sample grooves 201 is formed in the sample tray 2 and is located in the center of the four groups of the sample grooves 201, a shifting block 203 is fixedly connected to the side wall of the driving groove 202, a knocking ring 3 is connected to the driving groove 202, a deformable knocking plate 301 is fixedly connected to the outer ring of the knocking ring 3, in order to prevent the knocking plate 301 from damaging the sampling bottle, the knocking plate 301 is preferably made of rubber or silica gel, so that when the knocking ring 3 rotates, the knocking plate 301 can be driven to gradually close to the shifting block 203, the sampling plate 203 can cross over the outer wall of the shifting block, and the sampling tube can be used for monitoring the concentration of water sample in an upper sampling bottle, especially, and the concentration of a water sample in a sampling bottle which is effectively reduced after the sampling bottle is monitored, and the sampling bottle is effectively monitored in an experimental water sample in a water sample chamber;

specific sampling mode does, a sampling head 8 with monitoring function has been installed in cavity two 102, when the extraction water sample, pump body 801 through the internal fixed connection of sampling head 8 draws water, pump body 801's output can flow to in sampling tube 5 with the rivers, pump body 801's input fixedly connected with extension pipe 804, when the sample, the extraction that carries out the water sample in extension pipe 804 can go into the aquatic deeply, be provided with sensor 805 in the sampling head 8, in order to monitor in advance, sensor 805 can select turbidity inductor for use, when turbidity inductor detects the water sample turbidity great, sampling tube 5 just can extract partial water sample and send to in the sampling bottle, carry out the high accuracy detection of follow-up laboratory and confirm, thereby effectively promote work efficiency, the sampling hole has been seted up in cavity two 102 bottoms, extension pipe 804 on the sampling head 8 runs through the sampling hole and extends to the bottom, can stretch out when the sample, accomodate when not taking a sample, lifting means's life.

Referring to fig. 3, 4 and 5, the lifting of the sampling head 8 can be controlled by the electric telescopic rod, and can also be adjusted adaptively according to the design, which includes: the sleeve 4 is rotatably connected in the second cavity 102, wherein a thread groove is formed in the inner wall of the sleeve 4, a thread surface matched with the thread groove is formed in the sampling head 8, a rectangular pipe 802 is fixedly connected to the top of the sampling head 8, a rectangular hole is formed in a clamping plate between the first cavity 101 and the second cavity 102, and the rectangular pipe 802 slides in the rectangular hole, so that when the sleeve 4 rotates forwards and backwards, the sampling head 8 is matched with the thread groove in the sampling head 8 and limited by the rectangular hole, and can ascend and descend, so that the extension pipe 804 can extend into or separate from a water body to perform operations such as water sample collection, in addition, in order to enable the sampling head 8 to still effectively convey a water sample when ascending and descending, the rectangular pipe 802 is communicated with the sampling pipe 5 through an extension pipe 803, a first gear 401 and a second gear 402 are fixedly connected to the outer wall of the sleeve 4, a first motor 403 is fixedly connected in the second cavity 102, a fourth gear 404 meshed with the second gear 402 is fixedly connected to the output end of the first motor 403, and the lifting of the sampling head 8 can be controlled.

In order to better utilize the power for conveying the water sample, the knocking ring 3 is provided with a flow guide channel 302, the flow guide channel 302 is internally and fixedly connected with a vortex plate 303, and two ends of the flow guide channel 302 are respectively communicated with the sampling tube 5 and the extension tube 803, i.e. the vortex plate 303 can be pushed to rotate in the water sample conveying process, so that the knocking ring 3 is provided with rotary power;

of course, the knocking ring 3 can also be driven by the motor to rotate, and the achieved effect is consistent, but the production cost is higher and the assembly is inconvenient.

Referring to fig. 3 and 4, a middle rotary drum 501 is fixedly connected to the bottom of the mounting plate 103, the middle rotary drum 501 is communicated with a sampling tube 5 through a circulating pipe 502, a control valve is arranged on the sampling tube 5, the control valve is a three-way electromagnetic valve, on one hand, the position of water and the amount of water sample fed into the sampling bottle can be controlled, on the other hand, redundant water sample can be directly fed into the middle rotary drum 501 through the circulating pipe 502, a gear three 6 is rotatably connected to the bottom of the middle rotary drum 501, the gear three 6 is meshed with a gear one 401, a drain hole 601 is arranged on the gear three 6, 5-6 groups of spiral cutting pieces 602 which are uniformly distributed in the circumference are fixedly connected to the drain hole 601, spiral cutting piece 602 and the laminating of drive shaft, also, when floating case 1 and stopping taking a sample, along with extension pipe 804 stretches into the water, also can drive spiral cutting piece 602 and rotate in the drive shaft, cut off the pasture and push away the pasture and water that probably articulate in the drive shaft, guarantee to float case 1's stability next time and advance, in addition, the unnecessary water sample in the rotary drum 501 also can be discharged along spiral cutting piece 602 through wash port 601 in getting into, on the one hand, it can form the whirl and erode circulation section of thick bamboo 7 outer wall, on the other hand, rivers press on spiral cutting piece 602, thereby fix gear three 6, prevent when the sample, sleeve 4 rotates, guarantee the stability of sample.

Referring to fig. 3 and 4, mounting groove 104 has been seted up to the bottom in cavity one 101, be provided with spring 105 in the mounting groove 104, spring 105's one end fixedly connected with spheroid 106, the bottom of sample dish 2 has been seted up with spheroid 106 matched with ball groove 205, sample dish 2 is spacing through spheroid 106, guarantee that its position in cavity one 101 is unchangeable, ensure that the control valve can be accurate send water into in the appointed sample bottle, after the sample is accomplished, float case 1 and get back to the bank, the staff is to sample dish 2 revolving force a little, make ball groove 205 cross spheroid 106, thereby misplace sample bottle and sampling tube 5, be convenient for take the sample bottle who contains the sample, discharge outlet 204 has been seted up in the bottom of sample dish 2, can be timely with remaining water in the sample groove 201 float case 1.

In addition, the top of the first cavity 101 is in threaded connection with the cover plate 9, so that water can be prevented from entering the first cavity 101 from the upper side, the cover plate 9 is further provided with the camera 901 for observing the surrounding environment of the floating box 1 in real time, personnel can conveniently control the floating box 1 remotely on the shore, and sampling can be safely and efficiently performed on complex terrains.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a multi-functional water quality monitoring equipment, includes floats case (1), its characterized in that, it is provided with the propulsion portion that is used for the drive to float case (1) and removes to float case (1) bottom, float and from top to bottom set gradually cavity one (101) and cavity two (102) that communicate each other in case (1), be provided with in cavity one (101) sampling tube (5), still include:

a sample disc (2) rotatably arranged in the first cavity body (101), a sample groove (201) is arranged on the sample disc (2),

the sample tray (2) is internally provided with a driving groove (202) communicated with a sample groove (201), the side wall of the driving groove (202) is fixedly connected with a shifting block (203), the driving groove (202) is rotationally connected with a knocking ring (3), the outer ring of the knocking ring (3) is fixedly connected with a knocking plate (301), the knocking plate (301) is matched with the shifting block (203), and when the knocking ring (3) rotates, the knocking plate (301) is driven to pass through the shifting block (203) to knock the outer wall of a sampling bottle;

the sampling device comprises a sampling head (8) arranged in a second cavity (102), wherein a sampling hole is formed in the bottom of the second cavity (102), the input end of the sampling head (8) penetrates through the sampling hole to extend to the bottom, and the sampling head (8) is communicated with a sampling tube (5).

2. The multifunctional water quality monitoring device according to claim 1, further comprising:

a sleeve (4) connected in the second cavity (102) in a rotating way,

wherein the inner wall of the sleeve (4) is provided with a thread groove, the sampling head (8) is provided with a thread surface matched with the thread groove, the top of the sampling head (8) is fixedly connected with a rectangular pipe (802), the rectangular pipe (802) is communicated with the sampling pipe (5) through an extension pipe (803),

the gear I (401) and the gear II (402) are fixedly connected to the outer wall of the sleeve (4), the cavity II (102) is internally and fixedly connected with a motor I (403), and the output end of the motor I (403) is fixedly connected with a gear II (402) meshed with a gear IV (404).

3. The multifunctional water quality monitoring device is characterized in that a flow guide channel (302) is formed in the knocking ring (3), a vortex plate (303) is fixedly connected in the flow guide channel (302), and two ends of the flow guide channel (302) are respectively communicated with the sampling tube (5) and the telescopic tube (803).

4. The multifunctional water quality monitoring device according to claim 3, wherein the propelling part comprises three groups of circulating cylinders (7) which are rotatably connected to the bottom of the floating box (1), the three groups of circulating cylinders (7) are circumferentially and uniformly distributed at the bottom of the floating box (1),

the two ends of the circulating cylinder (7) are fixedly connected with intercepting plates (701), and a turbine (702) is arranged in the circulating cylinder (7).

5. The multifunctional water quality monitoring device of claim 4, wherein a mounting plate (103) is fixedly connected in the second cavity (102), a second motor (703) is fixedly connected to the top of the mounting plate (103), a driving shaft is fixedly connected to an output end of the second motor (703), the driving shaft penetrates through the second cavity (102) and extends to the bottom, and the circulating cylinder (7) is fixedly connected to one end, away from the second motor (703), of the driving shaft.

6. The multifunctional water quality monitoring device according to claim 5, wherein a middle rotating cylinder (501) is fixedly connected to the bottom of the mounting plate (103), the middle rotating cylinder (501) is communicated with a sampling tube (5) through a circulating pipe (502), a control valve is arranged on the sampling tube (5), a gear III (6) is rotatably connected to the bottom of the middle rotating cylinder (501), the gear III (6) is meshed with a gear I (401), a drain hole (601) is formed in the gear III (6), a spiral cutting piece (602) is fixedly connected to the drain hole (601), and the spiral cutting piece (602) is attached to a driving shaft.

7. The multifunctional water quality monitoring device of claim 6, wherein a plurality of groups of spiral cutting blades (602) are arranged, and the plurality of groups of spiral cutting blades (602) are circumferentially and uniformly distributed on the water drainage hole (601).

8. A multifunctional water quality monitoring device according to any one of claims 1-7, characterized in that a pump body (801) is fixedly connected in the sampling head (8), the output end of the pump body (801) is communicated with a rectangular pipe (802), the input end of the pump body (801) is fixedly connected with an extension pipe (804), and a sensor (805) is arranged in the sampling head (8).

9. The multifunctional water quality monitoring device according to any one of claims 1 to 7, wherein a mounting groove (104) is formed in the bottom of the first cavity (101), a spring (105) is arranged in the mounting groove (104), one end of the spring (105) is fixedly connected with a ball body (106), and a ball groove (205) matched with the ball body (106) is formed in the bottom of the sample tray (2).

10. A multifunctional water quality monitoring device according to any one of claims 1 to 7, characterized in that a cover plate (9) is connected to the top of the first cavity (101) in a threaded manner, and a camera (901) is arranged on the cover plate (9).