CN114689814A

CN114689814A - Water quality detection device and water quality detection method

Info

Publication number: CN114689814A
Application number: CN202210450358.9A
Authority: CN
Inventors: 赵锦龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-07-01

Abstract

The invention discloses a water quality detection device, which comprises a bearing part, a lifting part and a telescopic part, wherein the bearing part comprises a protective shell, the lifting part and the telescopic part are both positioned in the protective shell, the lifting part comprises a transmission component and a lifting component, the lifting component is fixed on the transmission component, the telescopic part comprises a telescopic component and a winding component, the winding component is fixedly connected with the telescopic component, and the telescopic component is fixedly connected with the lifting component; the lake water quality monitoring device has the advantages that the lifting piece and the telescopic piece are protected by the bearing piece, so that the device cannot be damaged due to collision in the transportation process, the normal operation of the device is ensured, the telescopic piece is lifted by the lifting piece, the whole size of the device is smaller, the device is convenient to carry and transport by operators, and the detection personnel can detect the water quality at any place and depth of a lake through the matching between the telescopic component and the rolling component in the telescopic piece, so that the measurement accuracy is ensured.

Description

Water quality detection device and water quality detection method

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality detection device and a water quality detection method.

Background

Water is a source of life, people can not boil in life and production activities, and the quality of drinking water is closely related to the health of people. With the development of social economy, scientific progress and improvement of the living standard of people, the requirements of people on the water quality of drinking water are continuously improved, and the water quality standard of the drinking water is correspondingly continuously developed and improved.

However, the existing water quality detection device often can not directly detect the water quality in the lake, needs detection personnel to sample water to wait to detect in a laboratory, is very troublesome, and if needs go on the lake of the degree of depth, still needs detection personnel to carry the water intake device of different lengths, wastes time and energy.

Disclosure of Invention

The present invention is directed to a water quality detection apparatus and a water quality detection method to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a water quality detection device and a water quality detection method comprise a bearing part, a lifting part and a telescopic part, wherein the bearing part comprises a protective shell, the lifting part and the telescopic part are both located in the protective shell, the lifting part comprises a transmission assembly and a lifting assembly, the lifting assembly is fixed on the transmission assembly, the telescopic part comprises a telescopic assembly and a rolling assembly, the rolling assembly is fixedly connected with the telescopic assembly, and the telescopic assembly is fixedly connected with the lifting assembly.

Optionally, the symmetrical vertical spacing spout of having seted up on the protecting crust inner wall, the protecting crust top articulates there is the top cap, just protecting crust bottom four corners fixedly connected with pulley, the vertical accommodation hole of having seted up on the top cap, the accommodation hole symmetry is provided with the fixed block.

Optionally, the symmetry sets up be provided with the connecting axle between the fixed block, the connecting axle both ends set up in the symmetry respectively the fixed block coupling, the first sleeve of fixedly connected with on the connecting axle, first telescopic output fixedly connected with handle, the handle is located in the accommodation hole.

Optionally, the transmission assembly comprises a transmission gear, a driven wheel is meshed on one side of the transmission gear, a first limiting shaft and a second limiting shaft vertically penetrate through the transmission gear and the driven wheel respectively, one end of the first limiting shaft and one end of the second limiting shaft are connected with the transmission gear and the driven wheel respectively, and the other end of the first limiting shaft and the other end of the second limiting shaft are fixedly connected with the bottom of the inner wall of the protective shell.

Optionally, the transmission gear is fixedly connected with a fixing ring, a stepping motor is arranged in the fixing ring, and an output end of the stepping motor is fixedly connected with the transmission gear.

Optionally, the lifting assembly includes support pillars arranged in symmetrical and vertical limiting chutes on the inner wall of the protective shell, first connection rods are arranged between the support pillars, two ends of each first connection rod are fixedly connected with the support pillars symmetrically arranged, and the lifting assembly further includes a limiting frame arranged at the top of the driven wheel.

Optionally, a plurality of fixing columns are fixedly connected to the limiting frame, one ends of the plurality of fixing columns are fixedly connected to the inner wall of the protective shell, the limiting frame is arranged in a hollow mode, a square sliding block is arranged in the limiting frame, a limiting nut is embedded in the square sliding block, the square sliding block is in shaft connection with the limiting nut, a lifting column is arranged at the top of the square sliding block, the lifting column is arranged in a hollow mode, a limiting screw is arranged in the lifting column, the limiting nut is in threaded connection with the limiting screw, and one end of the limiting screw is fixedly connected with the driven wheel.

Optionally, the telescopic assembly comprises an air pump arranged on the first connecting rod, a second sleeve is arranged on one side of the air pump, a telescopic rod is arranged in the second sleeve, the telescopic rod is arranged in a hollow mode, the inner space of the telescopic rod is communicated with the inner space of the second sleeve, and the output end of the air pump is communicated with the inner space of the sleeve.

Optionally, the fixed plate of telescopic link one side is fixed in including the symmetry to the rolling subassembly, and the symmetry sets up be provided with the rotation axis between the fixed plate, fixed the cup jointing has the wind-up roll on the rotation axis, the symmetry setting is run through respectively at the rotation axis both ends the fixed plate, just the rotation axis both ends set up with the symmetry respectively the fixed plate coupling, the rolling has the lifter wire on the wind-up roll, the one end of lifter wire with wind-up roll fixed connection, just the other end fixedly connected with water quality detector of lifter wire.

A water quality detection method comprises the following steps of S1: moving the device to the lake to be detected, and starting a stepping motor to enable the stepping motor to drive a transmission gear to rotate so as to drive a driven wheel meshed with the transmission gear to rotate; s2: it rotates to drive limit screw from the driving wheel to the drive inlays the stop nut who locates on square slider along limit screw upward movement, thereby with the ejecting spacing frame of lift post, and then with the ejecting protecting crust S3 of head rod: starting the air pump to enable the air pump to inject air into the inner space of the second sleeve and the telescopic rod, and then ejecting the telescopic rod out of the second sleeve; s4: and the winding roller is rotated, so that the lifting wire wound on the winding roller drives the water quality detector to move downwards, and the water quality is detected.

Compared with the prior art, the invention has the beneficial effects that:

1. the lifting piece and the telescopic piece are protected through the bearing piece, so that the device cannot be damaged due to collision in the transportation process, and the normal operation of the device is guaranteed.

2. The telescopic piece is lifted through the lifting piece, so that the whole size of the device is small, and operators can carry and transport the device conveniently.

3. Through the cooperation between flexible subassembly and the rolling subassembly in the extensible member for the measurement personnel can detect the quality of water of any place, any degree of depth in lake, thereby ensure measuring accurate.

Drawings

FIG. 1 is a schematic view of the overall structure of a water quality detecting apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of a carrier of a water quality detecting apparatus according to the present invention;

FIG. 3 is a schematic structural view of a lifting member of the water quality detecting device of the present invention;

FIG. 4 is a schematic structural diagram of a transmission gear and a driven gear of the water quality detection device of the present invention;

FIG. 5 is a schematic structural view of a first limiting shaft and a second limiting shaft of the water quality detecting device of the present invention;

FIG. 6 is a schematic structural view of an extension member of a water quality detecting device according to the present invention.

In the figure: 1. a carrier; 11. a protective shell; 111. a limiting chute; 112. a top cover; 113. a pulley; 114. an accommodation hole; 115. a fixed block; 116. a connecting shaft; 117. a first sleeve; 118. a handle; 2. a lifting member; 21. a transmission assembly; 211. a transmission gear; 212. a driven wheel; 213. a first limit shaft; 214. a second limit shaft; 215. a fixing ring; 216. a stepping motor; 22. a lifting assembly; 221. a support pillar; 222. a first connecting rod; 223. a limiting frame; 224. fixing a column; 225. a square slider; 226. a limit nut; 227. a lifting column; 228. a limit screw; 3. a telescoping member; 31. a telescoping assembly; 311. an air pump; 312. a second sleeve; 313. a telescopic rod; 32. a winding component; 321. a fixing plate; 322. a rotating shaft; 323. a wind-up roll; 324. a lifting line; 325. a water quality detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a water quality detecting apparatus and a water quality detecting method, including a bearing member 1 for bearing a lifting member 2 and an extensible member 3, a protecting casing 11 for protecting the lifting member 2 and the extensible member 3, a limiting chute 111 for accommodating and limiting a supporting column 221, a top cover 112 for sealing the protecting casing 11, a pulley 113 for driving the protecting casing 11 and the top cover 112 to move, an accommodating hole 114 for accommodating a fixing block 115, a fixing block 115 for limiting a connecting shaft 116, a connecting shaft 116 for allowing the first sleeve 117 to rotate, a first sleeve 117 for driving a handle 118 to extend and retract, and a handle 118 for pushing the protecting casing 11 to move.

Further, the lifting member 2 drives the telescopic member 3 to lift on the protective shell 11, the transmission assembly 21 transmits power to the lifting assembly 22, the transmission gear 211 transmits power of the stepping motor 216, the driven wheel 212 rotates along with the transmission gear 211, the first limit shaft 213 limits the transmission gear 211, the second limit shaft 214 limits the driven wheel 212, the fixing ring 215 fixes the stepping motor 216, and the stepping motor 216 provides power for the transmission gear 211 to rotate.

Further, the lifting assembly 22 that drives the extensible member 3 to lift up and down on the protective shell 11, the supporting column 221 that supports the extensible member 3, the first connecting rod 222 that fixes the extensible member 3, the limiting frame 223 that limits the square slider 225, the fixing column 224 that fixes the limiting frame 223, the square slider 225 that drives the lifting column 227 to move upward along the limiting frame 223, the limiting nut 226 that cooperates with the limiting screw 228 to drive the square slider 225 to move upward along the limiting frame 223, the lifting column 227 that pushes the first connecting rod 222 out of the protective shell 11, and the limiting screw 228 that rotates along the driven wheel 212.

Further, carry out water quality testing's extensible member 3 to lake arbitrary place and arbitrary degree of depth, the flexible subassembly 31 that adjusts the rolling subassembly 32 position, drive the air pump 311 that telescopic link 313 stretched out second sleeve 312, carry out spacing second sleeve 312 to telescopic link 313, drive rolling subassembly 32 and carry out the telescopic link 313 that the displacement was carried out, the rolling subassembly 32 of surveying the different degree of depth quality of water, carry out spacing fixed plate 321 to rotation axis 322, drive rotation axis 322 that wind-up roller 323 carried out the rotation, wind-up roller 323 that carries out the rolling to lifting wire 324, drive lifting wire 324 that water quality detector 325 carried out the displacement, water quality detector 325 surveys quality of water.

Wherein, the carrier 1 that holds that bears lifting member 2 and extensible member 3 includes the protecting crust 11 that protects lifting member 2 and extensible member 3, it all is located protecting crust 11 to drive extensible member 3 and carry out the lifting member 2 that goes up and down at protecting crust 11 and the extensible member 3 that carries out water quality testing to lake arbitrary place and arbitrary degree of depth, lifting member 2 includes that power transmission carries out lifting unit 22 drive assembly 21 and drives extensible member 3 and carry out the lifting unit 22 that goes up and down at protecting crust 11, lifting unit 22 is fixed in on the drive assembly 21, extensible member 3 includes that rolling component 31 and rolling component 32 that adjust rolling component 32 position, rolling

component

32 and 31 fixed connection of extensible component, extensible component 31 and lifting unit 22 fixed connection.

Further, the symmetry is vertical to be seted up on the protective housing 11 inner wall and to hold and spacing spout 111 the support column 221, protective housing 11 top articulates there is the top cap 112 that seals up protective housing 11, and protective housing 11 bottom four corners fixedly connected with drives protective housing 11 and top cap 112 and carries out the pulley 113 of displacement, vertical seting up on top cap 112 carries out the accommodation hole 114 that holds to fixed block 115, the symmetry is provided with in the accommodation hole 114 and carries out spacing fixed block 115 to connecting axle 116.

Further, be provided with between the fixed block 115 that makes first sleeve 117 can carry out the connecting axle 116 of rotation, connecting axle 116 both ends are respectively in the fixed block 115 coupling of symmetry setting, fixedly connected with drives handle 118 and carries out the first sleeve 117 that stretches out and draws back on connecting axle 116, the output fixedly connected with of first sleeve 117 promotes handle 118 that protective housing 11 carries out the displacement, handle 118 is located accommodation hole 114, through rotating connecting axle 116, first sleeve 117 that will be fixed in on connecting axle 116 shifts out accommodation hole 114, pulling handle 118, make first sleeve 117 stretch out and draw back to the comfortable height of operating personnel, promote handle 118, make handle 118 and pulley 113 cooperation, drive protective housing 11 and carry out the displacement, and then drive arrangement carries out the displacement.

Further, the transmission assembly 21 includes a transmission gear 211 for transmitting power of the stepping motor 216, a driven wheel 212 rotating along with the transmission gear 211 is engaged with one side of the transmission gear 211, a first limit shaft 213 for limiting the transmission gear 211 and a second limit shaft 214 for limiting the driven wheel 212 are vertically arranged on the transmission gear 211 and the driven wheel 212 in a penetrating manner, one end of the first limit shaft 213 and one end of the second limit shaft 214 are respectively coupled with the transmission gear 211 and the driven wheel 212, and the other end of the first limit shaft 213 and the other end of the second limit shaft 214 are fixedly connected with the bottom of the inner wall of the protective shell 11.

Further, a fixed ring 215 is fixedly connected to the transmission gear 211, a stepping motor 216 for providing power for the rotation of the transmission gear 211 is arranged in the fixed ring 215, and the output end of the stepping motor 216 is fixedly connected with the transmission gear 211.

Further, lifting unit 22 carries out the support column 221 that supports extensible member 3 including setting up in the vertical spacing spout 111 of seting up of symmetry on the protecting crust 11 inner wall, is provided with the head rod 222 that carries out the fixing to extensible member 3 between the support column 221, and head rod 222 both ends and the support column 221 fixed connection of symmetry setting, lifting unit 22 still including setting up in the spacing frame 223 at driven round 212 top.

Further, many fixed columns 224 that fix are carried out spacing frame 223 to fixedly connected with on the spacing frame 223, many fixed column 224 one end all with protecting crust 11 inner wall fixed connection, spacing frame 223 cavity sets up, be provided with in the spacing frame 223 and drive the square slider 225 that lift post 227 upwards carried out the displacement along spacing frame 223, it is equipped with to cooperate with stop screw 228 and drive square slider 225 upwards carry out the stop nut 226 that moves along spacing frame 223 to go on the displacement to inlay on the square slider 225, square slider and stop nut coupling, and the square slider 225 top is provided with the lift post 227 of ejecting protecting crust 11 with head rod 222, lift post 227 cavity sets up, be provided with in the lift post 227 and follow the stop screw 228 that follow driving wheel 212 and carry out the rotation, stop nut 226 and stop screw 228 threaded connection, stop screw 228 one end and follow driving wheel 212 fixed connection.

Further, by starting the stepping motor 216, the driving gear 211 is driven, the driven wheel 212 meshed with the driving gear 211 rotates, so as to drive one end of the limit screw 228 fixedly connected with the driven wheel 212 to rotate, and because the limit screw 228 is in threaded connection with the limit nut 226, and the limit nut 226 is embedded on the square slider 225, so that when the limit screw 228 rotates, the limit nut 226 drives the square slider 225 to move upwards along the limit screw 228, and further drives the lifting column 227 at the top of the displacement square slider 225 to drive the first connecting rod 222 to move upwards, and meanwhile, the supporting column 221 moves upwards along the limit chute 111, so as to limit the first connecting rod 222, and ensure that the first connecting rod 222 is stably moved upwards.

Further, flexible subassembly 31 is including setting up in flexible subassembly 31 including setting up the air pump 311 that drives telescopic link 313 and stretch out second sleeve 312 on head rod 222, and air pump 311 one side is provided with carries out spacing second sleeve 312 to telescopic link 313, is provided with telescopic link 313 in the second sleeve 312, and telescopic link 313 cavity sets up, and the inner space of telescopic link 313 communicates with the inner space of second sleeve 312, and the output of air pump 311 communicates with the inner space of second sleeve 312.

Further, the winding assembly 32 includes fixing plates 321 symmetrically fixed to one side of the telescopic rod 313, a rotating shaft 322 driving the winding roller 323 to rotate is disposed between the fixing plates 321 symmetrically disposed, the winding roller 323 winding the lifting wire 324 is fixedly sleeved on the rotating shaft 322, two ends of the rotating shaft 322 respectively penetrate through the fixing plates 321 symmetrically disposed, two ends of the rotating shaft 322 are respectively coupled to the fixing plates 321 symmetrically disposed, the lifting wire 324 driving the water quality detector 325 to displace is wound on the winding roller 323, one end of the lifting wire 324 is fixedly connected to the winding roller 323, and the other end of the lifting wire 324 is fixedly connected to the water quality detector 325 detecting water quality.

Further, the air pump 311 inflates the inside of the second sleeve 312 and the telescopic rod 313, and under the influence of air pressure, the telescopic rod 313 gradually extends out of the second sleeve 312, so that the position of the winding component 32 is adjusted, and when the winding component reaches the position above the detection position, the rotating shaft 322 is rotated, so that the lifting wire 324 wound on the winding roller 323 drives the water quality detector 325 to move underwater.

Further, a water quality detection method includes, S1: moving the device to the lake to be detected, and starting the stepping motor 216, so that the stepping motor 216 drives the transmission gear 211 to rotate, and further drives the driven wheel 212 meshed with the transmission gear 211 to rotate; s2: the driven wheel 212 drives the limit screw 228 to rotate, so as to drive the limit nut 226 embedded on the square sliding block 225 to move upwards along the limit screw 228, so as to eject the lifting column 227 out of the limit frame 223, and further eject the first connecting rod 222 out of the protective shell 11; s3: starting the air pump 311, so that the air pump 311 injects air into the inner space of the second sleeve 312 and the telescopic rod 313, and the telescopic rod 313 is ejected out of the second sleeve 312; s4: and rotating the winding roller 323 to enable the lifting wire 324 wound on the winding roller 323 to drive the water quality detector 325 to move downwards, so as to detect the water quality.

The working principle is as follows: through rotating connecting axle 116, will be fixed in first sleeve 117 on connecting axle 116 and shift out accommodation hole 114, pulling handle 118 for first sleeve 117 stretches out and draws back to the comfortable height of operating personnel, promotes handle 118, makes handle 118 and pulley 113 cooperation, drives protective housing 11 and carries out the displacement, and then the drive arrangement carries out the displacement.

When the lake is detected, the top cover 112 is opened, the stepping motor 216 is started to drive the transmission gear 211 and the driven wheel 212 meshed with the transmission gear 211 to rotate, so that the limit screw 228 fixedly connected with one end of the driven wheel 212 is driven to rotate, the limit screw 228 is in threaded connection with the limit nut 226, and the limit nut 226 is embedded on the square slider 225, so that when the limit screw 228 rotates, the limit nut 226 drives the square slider 225 to move upwards along the limit screw 228, the lifting column 227 at the top of the square slider 225 is driven to drive the first connecting rod 222 to move upwards, meanwhile, the supporting column 221 moves upwards along the limit chute 111, the first connecting rod 222 is limited, and stable upwards displacement of the first connecting rod 222 is guaranteed.

Further, when the first connecting rod 222 extends out of the interior of the protective shell 11, the air pump 311 inflates the interior of the second sleeve 312 and the telescopic rod 313, under the influence of air pressure, the telescopic rod 313 gradually extends out of the second sleeve 312, so that the position of the winding assembly 32 is adjusted, when the position is detected, the rotating shaft 322 is rotated, the lifting wire 324 wound on the winding roller 323 drives the water quality detector 325 to move underwater, the detector can detect the water quality of any place and any depth of the lake, and the accuracy of measurement is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a water quality testing device, includes and holds carrier (1), lifting member (2) and extensible member (3), its characterized in that, it includes protecting crust (11) to hold carrier (1), lifting member (2) and extensible member (3) all are located in protecting crust (11), lifting member (2) are including drive assembly (21) and lifting unit (22), lifting unit (22) are fixed in on the drive assembly (21), extensible member (3) are including flexible subassembly (31) and rolling subassembly (32), rolling subassembly (32) with flexible subassembly (31) fixed connection, flexible subassembly (31) with lifting unit (22) fixed connection.

2. A water quality detection device according to claim 1, characterized in that the inner wall of the protective shell (11) is symmetrically and vertically provided with limiting sliding grooves (111), the top of the protective shell (11) is hinged with a top cover (112), pulleys (113) are fixedly connected to four corners of the bottom of the protective shell (11), the top cover (112) is vertically provided with accommodating holes (114), and the accommodating holes (114) are internally and symmetrically provided with fixing blocks (115).

3. A water quality detection device according to claim 2, characterized in that a connecting shaft (116) is arranged between the symmetrically arranged fixing blocks (115), two ends of the connecting shaft (116) are respectively coupled with the symmetrically arranged fixing blocks (115), a first sleeve (117) is fixedly connected to the connecting shaft (116), a handle (118) is fixedly connected to the output end of the first sleeve (117), and the handle (118) is positioned in the accommodating hole (114).

4. A water quality detecting device according to claim 2 or 3, wherein the transmission assembly (21) comprises a transmission gear (211), a driven wheel (212) is engaged with one side of the transmission gear (211), a first limit shaft (213) and a second limit shaft (214) vertically penetrate through the transmission gear (211) and the driven wheel (212) respectively, one end of the first limit shaft (213) and one end of the second limit shaft (214) are coupled with the transmission gear (211) and the driven wheel (212) respectively, and the other end of the first limit shaft (213) and the other end of the second limit shaft (214) are fixedly connected with the bottom of the inner wall of the protective shell (11).

5. A water quality detecting device according to claim 4, characterized in that the transmission gear (211) is fixedly connected with a fixed ring (215), the inside of the fixed ring (215) is provided with a stepping motor (216), and the output end of the stepping motor (216) is fixedly connected with the transmission gear (211).

6. A water quality detection device according to claim 5, wherein the lifting assembly (22) comprises support columns (221) which are symmetrically and vertically arranged in limiting sliding grooves (111) formed in the inner wall of the protective shell (11), first connecting rods (222) are arranged between the support columns (221), two ends of each first connecting rod (222) are fixedly connected with the corresponding support columns (221) which are symmetrically arranged, and the lifting assembly (22) further comprises a limiting frame (223) arranged at the top of the driven wheel (212).

7. A water quality detection device according to claim 6, wherein a plurality of fixing columns (224) are fixedly connected to the limiting frame (223), one ends of the fixing columns (224) are fixedly connected with the inner wall of the protective shell (11), the limiting frame (223) is arranged in a hollow mode, a square sliding block (225) is arranged in the limiting frame (223), a limiting nut (226) is embedded on the square sliding block (225), the square sliding block (225) is in shaft connection with the limiting nut (226), a lifting column (227) is arranged at the top of the square sliding block (225), the lifting column (227) is arranged in a hollow mode, a limiting screw rod (228) is arranged in the lifting column (227), the limiting nut (226) is in threaded connection with the limiting screw rod (228), and one end of the limiting screw rod (228) is fixedly connected with the driven wheel (212).

8. A water quality detection device according to claim 6 or 7, wherein the telescopic assembly (31) comprises an air pump (311) arranged on a first connecting rod (222), a second sleeve (312) is arranged on one side of the air pump (311), a telescopic rod (313) is arranged in the second sleeve (312), the telescopic rod (313) is arranged in a hollow manner, the inner space of the telescopic rod (313) is communicated with the inner space of the second sleeve (312), and the output end of the air pump (311) is communicated with the inner space of the second sleeve (312).

9. A water quality detection device according to claim 8, wherein the winding assembly (32) comprises fixing plates (321) symmetrically fixed on one side of an expansion rod (313), a rotation shaft (322) is arranged between the fixing plates (321) symmetrically arranged, a winding roller (323) is fixedly sleeved on the rotation shaft (322), two ends of the rotation shaft (322) respectively penetrate through the fixing plates (321) symmetrically arranged, two ends of the rotation shaft (322) are respectively coupled with the fixing plates (321) symmetrically arranged, a lifting line (324) is wound on the winding roller (323), one end of the lifting line (324) is fixedly connected with the winding roller (323), and the other end of the lifting line (324) is fixedly connected with a water quality detector (325).

10. A water quality detecting method using the water quality detecting apparatus according to claim, wherein the water quality detecting apparatus of S1: moving the device to the lake to be detected, and starting a stepping motor to enable the stepping motor to drive a transmission gear to rotate so as to drive a driven wheel meshed with the transmission gear to rotate; s2: the driven wheel drives the limit screw to rotate, so that a limit nut embedded on the square sliding block is driven to move upwards along the limit screw, the lifting column is ejected out of the limit frame, and the top protective shell of the first connecting rod is further pushed out; s3: starting the air pump to enable the air pump to inject air into the inner space of the second sleeve and the telescopic rod, and then ejecting the telescopic rod out of the second sleeve; s4: and the winding roller is rotated, so that the lifting wire wound on the winding roller drives the water quality detector to move downwards, and the water quality is detected.