CN115931443A - Ocean water quality sampling device - Google Patents

Abstract

The invention discloses a marine water quality sampling device, comprising a bearing mechanism, the bearing mechanism includes a bearing device, a control component and a traction component are installed on the bearing device, and the control component and the traction component are electrically connected; a sampling mechanism, the sampling mechanism comprises a connecting rope and The sampling cylinder connected by the transmission of the traction assembly, the sampling cylinder includes a number of independently arranged sampling units, and the several sampling units are connected in one direction through the connecting pipe; The top end is connected to the sampling cylinder through the drive assembly, and the bottom end of the separation net is detachably connected to the sampling cylinder through the positioning assembly; the positioning mechanism is fixedly installed at the bottom of the sampling cylinder, and the positioning mechanism is electrically connected to the control assembly. The invention has the advantages of convenient use and high sampling efficiency, can conveniently carry out continuous sampling at different depths, reduces the mixing of samples, improves the sampling effect, and reduces the labor load of sampling.

Description

A kind of marine water quality sampling device

technical field

The invention relates to the technical field of water quality sampling, in particular to a marine water quality sampling device.

Background technique

With the rapid economic development of coastal cities, the importance of deep-sea energy development and research has become increasingly prominent, and the importance of finding and exploring marine oil and gas resources and microbial resources has gradually increased; and the environmental quality pollution of coastal waters has also become increasingly apparent. Phosphate, heavy metals, etc. have exceeded the standard, and the water body presents a certain degree of eutrophication; therefore, whether it is to develop various resources in the ocean or to study and control seawater pollution, sampling seawater is the basis for marine research Work.

The most commonly used method of seawater sampling is the water sampling method, which is to fix a series of water sampling devices on the steel wire rope on the ship, put them into different depths with the mouth open, and when the seawater samples flow in, give The signal shuts down the collector, which seals the seawater before it is brought back to the ship for experimental analysis. However, in the above-mentioned sampling method, the sampler can only perform a single sampling at a specified depth, and it needs to be repeated multiple times when sampling at different depths at the same location, resulting in heavy workload and low sampling efficiency; at the same time, due to the long sampling interval, it is easy to cause the same location The affected samples vary greatly, and the reliability of sampling decreases.

Therefore urgently need to design a kind of marine water quality sampling device to solve above-mentioned technical problem.

Contents of the invention

The object of the present invention is to provide a marine water quality sampling device to solve the above-mentioned problems in the prior art.

To achieve the above object, the present invention provides the following scheme: the present invention provides a marine water quality sampling device, comprising:

a bearing mechanism, the bearing mechanism includes a bearing device, a control component and a traction component are installed on the bearing device, and the control component is electrically connected to the traction component;

A sampling mechanism, the sampling mechanism includes a sampling cylinder that is transmission-connected to the traction assembly through a connecting rope, the sampling cylinder includes a number of independently arranged sampling units, and the several sampling units are connected in one direction through a connecting pipe;

A partition mechanism, the partition mechanism includes a partition net that is rotatably set outside the sampling cylinder, the top end of the partition net is connected to the sampling cylinder through a drive assembly, and the bottom end of the partition net is connected to the sampling cylinder through a support component. The above sampling cylinder can be detachably connected;

A positioning mechanism, the positioning mechanism is fixedly installed on the bottom end of the sampling cylinder, and the positioning mechanism is electrically connected with the control assembly.

Preferably, the sampling unit includes a sample box, and several of the sample boxes are fixedly arranged up and down; a switch assembly is installed on the outer wall of the sample box; the communication pipe runs through the sample box and connects with the The cavity of the sample box is connected.

Preferably, the switch assembly includes several water inlet holes penetrating through the outer wall of the sample box, the outer wall of the sample box is slidably connected with a switch cover, and the switch cover is provided correspondingly to the several water inlet holes and is detachable connection; the outer wall of the switch sleeve is threadedly connected with a switch screw rod, and the switch screw rod is connected to the output shaft of the switch motor, the switch motor is installed at the bottom of the mounting plate, and the mounting plate is fixed on the bottom of the sample box outer wall.

Preferably, the one-way assembly includes several one-way holes opened on the communication pipe, and a one-way plug is detachably connected to the one-way hole; one end of the one-way plug away from the one-way hole is fixed A telescopic rod is connected; the upper and lower corresponding installation frames are fixedly connected in the connecting pipe, and a mounting frame is fixedly connected between the two mounting frames, and the telescopic rod is fixedly connected to the mounting frame; the outer casing of the telescopic rod A one-way spring is provided, and the two ends of the one-way spring are fixedly connected to the installation frame and the one-way plug respectively.

Preferably, the top and bottom of the sampling cylinder are fixedly connected with an upper top plate and a lower bottom plate respectively, the positioning mechanism is installed at the bottom of the lower bottom plate; the drive assembly is installed in the upper top plate, the A support assembly is mounted within the lower base plate.

Preferably, the driving assembly includes a driving motor installed in the upper top plate, and the output end of the driving motor is connected to a driving gear; A drive ring is connected, and the drive ring is meshed with the drive gear; the top of the partition net is detachably connected with the drive ring.

Preferably, the bottom end of the drive ring is provided with a connection groove that matches the top of the partition net, and the side wall of the connection groove is provided with a number of connection holes, and a connection block is slidably connected in the connection hole, so that The top of the connecting block protrudes from the connecting hole and is detachably connected with the partition net; the side wall of the connecting block is hinged with a tensioning rod, and the other end of the tightening rod protrudes from the driving ring and is vertical A contact rod is fixedly connected, and the top end of the contact rod is detachably connected with the side wall of the partition net through a contact block.

Preferably, the support assembly includes a positioning groove opened on the top of the lower base plate, a positioning ring is slidably connected in the positioning groove, and the top of the positioning ring is detachably connected to the bottom end of the partition net; the positioning Several positioning springs are fixedly connected between the bottom end of the ring and the bottom end of the positioning groove.

Preferably, the positioning mechanism includes a positioning shell installed at the bottom end of the lower base plate, a positioning assembly is installed in the positioning shell, and the positioning assembly is electrically connected with the control assembly; the bottom end of the positioning shell is installed There are counterweights.

Preferably, several airbags are installed on the top of the upper top plate, the air pipes of the air bags are arranged along the connecting rope, and the air pipes communicate with the air compressor on the carrying device; the air pipes are flexible.

The invention discloses the following technical effects: the invention discloses a marine water quality sampling device, which is mainly used to solve the problem that the existing marine water quality sampling device cannot realize continuous sampling, improve sampling efficiency, and reduce sampling labor; As the base of the device, the carrying device is used to carry the sampling device to the sampling location. The traction component is used to pull the sampling mechanism to realize the pulling control of the sampling mechanism. The control component is used to control the operation of the whole set of equipment and observe the sampling results at the same time to realize Automatic control reduces labor load; the sampling cylinder of the sampling mechanism is connected to the traction assembly through a connecting rope, and the lifting of the sampling mechanism is controlled by the connecting rope, which can facilitate sampling of seawater at different depths; the sampling cylinder includes several independent sampling units, which can It is convenient for continuous sampling of seawater at different depths, while preventing sample mixing and improving sampling accuracy; the isolation net of the separation mechanism is rotatably set outside the sampling cylinder, which can prevent sundries and aquatic organisms in seawater from blocking the sampling unit. The net throws away the intercepted debris, prevents the debris from adhering to the isolation net, improves the effect of the isolation net, and prolongs the service life of the isolation net; The surrounding environment is used for positioning to facilitate more accurate positioning of the sampling depth. The invention has the advantages of convenient use and high sampling efficiency, can conveniently carry out continuous sampling at different depths, reduces the mixing of samples, improves the sampling effect, and reduces the labor load of sampling.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the front view of the marine water quality sampling device of the present invention;

Fig. 2 is the structural representation of sampling mechanism of the present invention;

Fig. 3 is the partial enlarged view of A in Fig. 2 of the present invention;

Fig. 4 is the partial enlarged view of B in Fig. 2 of the present invention;

Fig. 5 is the partially enlarged view of C in Fig. 2 of the present invention;

Fig. 6 is a partial enlarged view of E in Fig. 5 of the present invention;

Fig. 7 is a partial enlarged view of D in Fig. 2 of the present invention;

Among them, 1. carrying mechanism; 2. sampling mechanism; 3. separation mechanism; 4. positioning mechanism; 11. carrying device; 12. control component; 13. traction component; 14. air compressor; Rope; 21, sampling cylinder; 22, connecting pipe; 23, sample box; 24, water inlet hole; 25, switch sleeve; 26, switch screw; 27, switch motor; 28, mounting plate; 29, one-way hole; 210 , one-way plug; 211, expansion rod; 212, installation frame; 213, installation frame; 214, one-way spring; 215, sealing sleeve; 216, upper top plate; 217, lower bottom plate; 218, air bag; 31. Partition net; 32. Driving motor; 33. Driving gear; 34. Driving groove; 35. Driving ring; 36. Connection groove; 37. Connection hole; 38. Connection block; 39. Top tightening rod; 310. Contact rod 311, contact block; 312, positioning groove; 313, positioning ring; 314, positioning spring; 315, ball; 41, positioning shell; 42, positioning assembly; 43, counterweight.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1-7, the present invention provides a kind of marine water quality sampling device, comprises:

The carrying mechanism 1, the carrying mechanism 1 includes a carrying device 11, a control assembly 12 and a traction assembly 13 are installed on the carrying device 11, and the control assembly 12 is electrically connected to the traction assembly 13;

Sampling mechanism 2, sampling mechanism 2 comprises the sampling cylinder 21 that is connected with traction assembly 13 by connecting rope 16, and sampling cylinder 21 comprises the sampling unit of several independent settings, and between several sampling units unidirectionally communicates through connecting pipe 22;

Separation mechanism 3, separation mechanism 3 comprises the separation mesh 31 that is rotatably sheathed outside the sampling cylinder 21, the top of the separation mesh 31 is connected with the sampling cylinder 21 through the driving assembly, and the bottom end of the separation mesh 31 can be connected to the sampling cylinder 21 through the support assembly. Disconnect the connection;

The positioning mechanism 4 is fixedly installed on the bottom of the sampling cylinder 21 , and the positioning mechanism 4 is electrically connected with the control assembly 12 .

The invention discloses a marine water quality sampling device, which is mainly used to solve the problem that the existing marine water quality sampling device cannot realize continuous sampling, improve sampling efficiency, and reduce sampling labor; the bearing device 11 of the bearing mechanism 1 serves as the basic The seat is used to carry the sampling device to the sampling location. The traction assembly 13 is used to pull the sampling mechanism 2 to realize the pulling control of the sampling mechanism 2. The control assembly 12 is used to control the operation of the whole set of equipment and observe the sampling results at the same time to realize automatic control. , reduce the amount of labor; the sampling cylinder 21 of the sampling mechanism 2 is connected with the traction assembly 13 through the connecting rope 16, and the lifting of the sampling mechanism 2 is controlled by the connecting rope 16, which can facilitate sampling of seawater at different depths; the sampling cylinder 21 includes several independent The sampling unit can facilitate continuous sampling of seawater at different depths, and at the same time prevent sample mixing and improve sampling accuracy; the separation net 31 of the separation mechanism 3 is rotatably set outside the sampling cylinder 21, which can prevent sundries and aquatic organisms in seawater The sampling unit is blocked, and the rotating separation net 31 throws off the intercepted sundries, prevents the sundries from adhering to the separation net 31, improves the effect of the separation net 31, and prolongs the service life of the separation net 31; the positioning mechanism 4 is used for The sampling cylinder 21 is weighted, and the position of the sampling cylinder 21 and the surrounding environment are positioned at the same time, so as to facilitate more accurate positioning of the sampling depth.

Further, the carrying device 11 selects an existing scientific research or a ship of its use; the traction assembly 13 is preferably a cable reel, and pulls the sampling cylinder 21 by winding the connecting rope 16; the control assembly 12 selects existing equipment, which is not mentioned here. repeat.

To further optimize the scheme, the sampling unit includes a sample box 23, and several sample boxes 23 are fixedly arranged up and down; the outer wall of the sample box 23 is equipped with a switch assembly; the connecting pipe 22 runs through the sample box 23 and communicates with the inner cavity of the sample box 23 through a one-way assembly . A number of sample boxes 23 are stacked together to form the sampling cylinder 21, which can realize continuous sampling at different depths, and can complete multiple samplings during one dive, without pulling the sampling cylinder 21 out of the sea surface and repeating after each sampling. Improve sampling efficiency; the switch assembly is used to control the on-off relationship between the sample box 23 and seawater. When sampling, the switch assembly is turned on, and the seawater from the outside enters the sample box 23, and the air in the sample box 23 enters into communication from the one-way assembly under pressure. Pipe 22 until the seawater fills the sampling cylinder 21 to complete the sampling, and then close the switch assembly to complete the sampling at a specific depth.

To further optimize the scheme, the switch assembly includes a number of water inlet holes 24 that run through the outer wall of the sample box 23, and the outer wall of the sample box 23 is slidably connected with a switch cover 25, and the switch cover 25 is correspondingly arranged and detachably connected with several water inlet holes 24; The outer wall of cover 25 is threadedly connected with switch screw rod 26, and switch screw rod 26 is connected with the output shaft transmission of switch motor 27. When sampling is required, the switch motor 27 is turned on, the switch motor 27 drives the switch screw rod 26 to rotate, and then drives the switch sleeve 25 engaged with the switch screw rod 26 to rise, and the water inlet hole 24 is leaked, and the seawater is carried out from the water inlet hole 24 to the sample box 23 inside; after the sampling is completed, the switch motor 27 reverses, and the switch sleeve 25 descends to block the water inlet 24, so that the sample box 23 is disconnected from the outside world, preventing the sample in the sample box 23 from leaking, and can also prevent seawater of different depths Mixed with the sample in the sample box 23, the sampling accuracy is improved.

Further, a sealing sleeve 215 is arranged between the inner wall of the switch cover 25 and the outer wall of the sample box 23, and the sealing sleeve 215 is fixedly connected to the inner wall of the switch cover 25 and has an interference fit with the outer wall of the sample box 23, thereby improving the airtightness of the sample box 23.

Further, the bottom of the sample box 23 is connected with an outlet pipe 219 for exporting the seawater sample in the sample box 23 after the sampling is completed; the outlet pipe 219 is normally closed and opened only when the seawater sample is exported.

To further optimize the scheme, the one-way assembly includes several one-way holes 29 opened on the connecting pipe 22, and the one-way plug 210 is detachably connected to the one-way hole 29; Rod 211; the connecting pipe 22 is fixedly connected with the installation frame 212 correspondingly arranged up and down, and the installation frame 213 is fixedly connected between the two installation frames 212, and the telescopic rod 211 is affixed on the mounting frame 213; The spring 214 and the two ends of the one-way spring 214 are fixedly connected to the installation frame 213 and the one-way plug 210 respectively. Both the one-way hole 29 and the one-way plug 210 are set in the shape of a cone, so that the one-way plug 210 can only move toward the inner cavity of the connecting pipe 22, thereby realizing the function of the one-way valve, so that the air and water in the sample box 23 can When sampling, the seawater from the outside enters the sample box 23, so that the pressure in the sample box 23 rises, and the air inside is pressed to push the one-way plug 210, so that the sample box 23 and the communication tube 22 When the sampling is completed, the water inlet hole 24 is blocked, and the one-way spring 214 pushes the one-way plug 210 back into the one-way hole 29 and blocks the one-way hole 29, realizing the function of one-way exhaust.

To further optimize the scheme, the top and bottom of the sampling cylinder 21 are fixedly connected with an upper top plate 216 and a lower bottom plate 217 respectively, and the positioning mechanism 4 is installed at the bottom of the lower bottom plate 217; Inside. The arrangement of upper top plate 216 and lower bottom plate 217 is in order to provide a place for the installation of separation net 31, and separation net 31 is installed between upper top plate 216 and lower bottom plate 217 by drive assembly and support assembly, isolates the impurity of outside and aquatic organisms to sampling The effect of cartridge 21.

To further optimize the scheme, the driving assembly includes a driving motor 32 installed in the upper top plate 216, and the output end of the driving motor 32 is connected with a driving gear 33; The drive ring 35 is meshed with the drive gear 33 ; the top of the partition net 31 is detachably connected with the drive ring 35 . The drive motor 32 drives the drive ring 35 to rotate through the drive gear 33 , and then drives the partition net 31 to rotate through the drive ring 35 .

To further optimize the scheme, the bottom end of the drive ring 35 is provided with a connection groove 36 that is compatible with the top of the separation net 31, and the side wall of the connection groove 36 is provided with a plurality of connection holes 37, and a connection block 38 is slidably connected in the connection hole 37. The top of the block 38 extends out of the connecting hole 37 and is detachably connected with the partition net 31; the side wall of the connecting block 38 is hinged with a push-up rod 39, and the other end of the push-up rod 39 stretches out of the driving ring 35 and is vertically fixed with a contact rod 310 , the top end of the contact rod 310 is detachably connected to the side wall of the partition net 31 through the contact block 311 . When the separation net 31 was inserted into the connection groove 36 at the bottom end of the driving ring 35, the connection block 38 was promoted to slide in the connection hole 37, and finally the connection block 38 withstood the separation net 31 to complete the fixing; The push rod 39 is deflected, and the contact rod 310 and the contact block 311 are pressed against the two side walls of the partition net 31, thereby clamping the partition net 31, improving the stability between the partition net 31 and the drive ring 35, and reducing the risk of slippage. probability.

Further, a connecting spring is fixedly connected between the connecting block 38 and the connecting hole 37 for resisting the connecting block 38 .

To further optimize the scheme, the support assembly includes a positioning groove 312 provided at the top of the lower base plate 217, a positioning ring 313 is slidably connected in the positioning groove 312, and the top of the positioning ring 313 is detachably connected to the bottom end of the partition net 31; the bottom end of the positioning ring 313 is connected to the A plurality of positioning springs 314 are fixedly connected between the bottom ends of the positioning slots 312 . When installing the partition net 31, first put the bottom end of the partition net 31 against the positioning ring 313, and press the positioning ring 313 downward, then insert the top of the partition net into the connection groove 36 at the bottom of the drive ring 35 to complete the partition net 31. installation.

Furthermore, a number of balls 315 are arranged before the separation net 31 and the positioning ring 313 , and a number of balls 315 are disposed between the drive ring 35 and the drive groove 34 , which reduces the frictional resistance of the separation net 31 to rotate and reduces wear.

Furthermore, the partition net 31 is rolled from a plate-shaped material, and is detachably connected, so that it can be easily installed outside the sampling cylinder 21 .

To further optimize the solution, the positioning mechanism 4 includes a positioning shell 41 installed at the bottom of the lower base plate 217, a positioning assembly 42 is installed in the positioning shell 41, and the positioning assembly 42 is electrically connected with the control assembly 12; a counterweight is installed at the bottom of the positioning shell 41 43. The positioning assembly 42 includes a displacement gauge and a depth sensor, which are used to locate the position and depth of the sampling cylinder 21; the displacement gauge and the depth sensor are commonly used measuring devices, and will not be described in detail here; the effect of the counterweight 43 is to ensure that the sampling The barrel 21 falls vertically, without deflection in the middle, and reduces the influence of water flow on the sampling barrel 21 pipe; the weight of the counterweight 43 can be selected according to the sampling depth and the environment.

To further optimize the scheme, several airbags 218 are installed on the top of the upper top plate 216, and the air pipes 15 of the air bags 218 are arranged along the connecting rope 16, and the air pipes 15 communicate with the air compressor 14 on the carrying device 11; the air pipes 15 are flexible. The airbag 218 on the upper top plate 216 in combination with the counterweight 43 can ensure the posture of the sampling cylinder 21, and the expansion and contraction of the airbag 218 can also adjust its buoyancy to the sampling cylinder 21, and adjust the sinking and floating speed of the sampling cylinder 21.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

The above embodiments only describe the preferred mode of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, those skilled in the art may make various modifications and changes to the technical solution of the present invention. Improvements should all fall within the scope of protection determined by the claims of the present invention.

Claims (10)

1. An ocean water quality sampling device, comprising:

the bearing mechanism (1), the bearing mechanism (1) comprises a bearing device (11), a control component (12) and a traction component (13) are installed on the bearing device (11), and the control component (12) is electrically connected with the traction component (13);

the sampling mechanism (2) comprises a sampling cylinder (21) which is in transmission connection with the traction assembly (13) through a connecting rope (16), the sampling cylinder (21) comprises a plurality of independently arranged sampling units, and the sampling units are in one-way communication through a communicating pipe (22);

the separation mechanism (3) comprises a separation net (31) which is rotatably sleeved outside the sampling cylinder (21), the top end of the separation net (31) is in transmission connection with the sampling cylinder (21) through a driving assembly, and the bottom end of the separation net (31) is detachably connected with the sampling cylinder (21) through a supporting assembly;

positioning mechanism (4), positioning mechanism (4) fixed mounting be in the bottom of sampler barrel (21), positioning mechanism (4) with control assembly (12) electric connection.

2. The marine water quality sampling device of claim 1, wherein: the sampling unit comprises sample boxes (23), and a plurality of sample boxes (23) are fixedly connected and arranged end to end from top to bottom; the outer wall of the sample box (23) is provided with a switch assembly; the communicating pipe (22) penetrates through the sample box (23) and is communicated with the inner cavity of the sample box (23) through a one-way assembly.

3. An ocean water quality sampling apparatus according to claim 2 wherein: the switch assembly comprises a plurality of water inlet holes (24) penetrating through the outer wall of the sample box (23), the outer wall of the sample box (23) is connected with a switch sleeve (25) in a sliding mode, and the switch sleeve (25) is arranged corresponding to the water inlet holes (24) and is detachably connected with the water inlet holes; the outer wall threaded connection of switch cover (25) has switch screw rod (26), switch screw rod (26) are connected with the output shaft transmission of switch motor (27), switch motor (27) are installed in mounting panel (28) bottom, mounting panel (28) rigid coupling is in the outer wall of sample box (23).

4. An ocean water quality sampling apparatus according to claim 2 wherein: the one-way assembly comprises a plurality of one-way holes (29) formed in the communicating pipe (22), and one-way plugs (210) are detachably connected in the one-way holes (29); one end of the one-way plug (210) far away from the one-way hole (29) is fixedly connected with a telescopic rod (211); the communication pipe (22) is fixedly connected with mounting frames (212) which are correspondingly arranged up and down, a mounting frame (213) is fixedly connected between the two mounting frames (212), and the telescopic rod (211) is fixedly connected to the mounting frame (213); telescopic link (211) overcoat is equipped with one-way spring (214), the both ends of one-way spring (214) respectively with mounting bracket (213) with one-way stopper (210) rigid coupling.

5. The marine water quality sampling device of claim 1, wherein: the top end and the bottom end of the sampling cylinder (21) are respectively and fixedly connected with an upper top plate (216) and a lower bottom plate (217), and the positioning mechanism (4) is installed at the bottom end of the lower bottom plate (217); the drive assembly is mounted within the upper top plate (216) and the support assembly is mounted within the lower bottom plate (217).

6. An ocean water quality sampling apparatus according to claim 5 wherein: the driving assembly comprises a driving motor (32) arranged in the upper top plate (216), and the output end of the driving motor (32) is in transmission connection with a driving gear (33); a driving groove (34) is formed in the bottom end of the upper top plate (216), a driving ring (35) is rotationally connected in the driving groove (34), and the driving ring (35) is meshed with the driving gear (33); the top end of the separation net (31) is detachably connected with the driving ring (35).

7. An ocean water quality sampling apparatus according to claim 6 wherein: the bottom end of the driving ring (35) is provided with a connecting groove (36) matched with the top end of the separation net (31), the side wall of the connecting groove (36) is provided with a plurality of connecting holes (37), connecting blocks (38) are connected in the connecting holes (37) in a sliding mode, and the top ends of the connecting blocks (38) extend out of the connecting holes (37) and are detachably connected with the separation net (31); the side wall of the connecting block (38) is hinged with a jacking rod (39), the other end of the jacking rod (39) extends out of the driving ring (35) and is vertically and fixedly connected with a contact rod (310), and the top end of the contact rod (310) is detachably connected with the side wall of the separation net (31) through a contact block (311).

8. An ocean water quality sampling apparatus according to claim 5 wherein: the supporting assembly comprises a positioning groove (312) formed in the top end of the lower bottom plate (217), a positioning ring (313) is connected in the positioning groove (312) in a sliding mode, and the top end of the positioning ring (313) is detachably connected with the bottom end of the separation net (31); and a plurality of positioning springs (314) are fixedly connected between the bottom end of the positioning ring (313) and the bottom end of the positioning groove (312).

9. An ocean water quality sampling apparatus according to claim 5 wherein: the positioning mechanism (4) comprises a positioning shell (41) arranged at the bottom end of the lower bottom plate (217), a positioning component (42) is arranged in the positioning shell (41), and the positioning component (42) is electrically connected with the control component (12); and a balancing weight (43) is installed at the bottom end of the positioning shell (41).

10. An ocean water quality sampling apparatus according to claim 5 wherein: a plurality of air bags (218) are mounted at the top end of the upper top plate (216), air pipes (15) of the air bags (218) are arranged along the connecting ropes (16), and the air pipes (15) are communicated with an air compressor (14) on the bearing device (11); the air pipe (15) has elasticity.

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