Distributed connection type red tide detection device and use method thereof

Abstract

The invention relates to the technical field of water quality detection, and provides a distributed connection type red tide detection device and a use method thereof.The distributed connection type red tide detection device comprises a buoy body with a cavity, and a pump suction pipe set is fixed in the cavity of the buoy body; according to the invention, a pump suction pipe group, and a lifting mechanism, a reciprocating plug piece, a fixed bracket, a sampling barrel, a transmission mechanism and a detection mechanism which are distributed and connected with the pump suction pipe group are arranged in a buoy body, a motor works to drive a winding roller to roll and wind a lifting rope, and a suction head assembly is gradually lifted upwards through the lifting rope under the conduction of a fixed pulley; the winding roller drives the turntable to rotate while winding the lifting rope, and the eccentric pin shaft drives the rocker arm, so that the piston is pushed and pulled in a reciprocating manner through the thrust rod, and the sucked water sample can be intermittently added into the sample storage cavity through the water inlet pipe. Through intermittent water absorption, the situation that underwater sundries block the interception net due to the fact that the tail end suction head assembly is in a water absorption state for a long time can be prevented, and the pipeline is kept smooth.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a distributed connection type red tide detection device and a use method thereof. Background Art

[0002] The physicochemical properties of seawater (chlorophyll, water temperature, salinity, dissolved oxygen, phosphate, nitrate, trace metals Fe and Mn, etc.) are closely related to the occurrence of red tides. The formation principle of red tides can be analyzed by testing water samples in the red tide area. The water quality detection buoy device is an automatic water quality monitoring laboratory or meteorological monitoring device set up in rivers, lakes, reservoirs, near-shore waters and other basins. It is a small water quality monitoring system or meteorological system placed in the water area, with a water quality monitor or instrument platform as the core, using sensor technology, combined with a buoy body, power supply system, and data transmission equipment.

[0003] At present, in order to monitor water quality, buoys are generally used as carriers, and then the water quality monitor is sunk to a fixed depth to monitor the water quality; therefore, long-term immersion not only shortens the service life of the water quality monitor, but also leads to frequent going out to sea, resulting in high maintenance costs.

[0004] After searching, the announcement number CN117818816B discloses a water quality detection buoy device, including: a buoy body and a water quality detection device. The buoy body has a cavity; the water quality detection device is installed on the buoy body; the water quality detection device includes a water sample box, a protective tube, a water suction hose, a submersible pump, an anchor chain and a water quality detector; the water sample box is provided with a water sample tank, and the water sample box is provided with a through hole; the protective tube is installed in the through hole; the other end of the water suction hose extends into the protective tube and extends downward; the submersible pump is connected to the water suction hose; one end of the anchor chain is connected to the buoy body, and the other end of the anchor chain extends into the protective tube and extends downward; the water quality detector is installed in the water sample tank. The submersible pump is supported by the anchor chain, and the water sample sucked by the submersible pump is transported to the water sample tank of the water sample box through the water suction hose, so that the water quality detector can be installed in the water sample tank and the water sample can be tested, so that the water quality detector does not need to be immersed in the sea, thereby extending the service life of the water quality detector.

[0005] However, the above-mentioned water quality detection buoy device still has the following problems: the above-mentioned water quality detection buoy device uses a submersible pump to perform uninterrupted suction sampling, which makes the terminal suction head in a water absorbing state for a long time, which makes it easy for debris to clog the interception net underwater, affecting the circulation of the pipeline, causing long-term pressure buildup on the submersible pump and easily damaging it. In addition, the extracted water samples are mixed in the water sample tank, which easily causes sample confusion. Summary of the invention

[0006] The present invention provides a distributed connection type red tide detection device and a use method thereof, which solves the problems of uninterrupted suction sampling and mixing of the extracted water samples in a water sample tank in the prior art.

[0007] The technical solution of the present invention is as follows: a distributed connection type red tide detection device, comprising a buoy body with a cavity, a pump suction pipe group is fixed in the cavity of the buoy body, the lower end of the pump suction pipe group is connected to a suction head assembly through a hose, a suspension rope is fixed on the suction head assembly, and a lifting mechanism, a reciprocating plug, a fixed bracket, a sampling cylinder, a transmission mechanism and a detection mechanism are distributed in the buoy body;

[0008] The lifting mechanism is used to lift the suction head assembly upwards through the lifting rope;

[0009] The reciprocating plug is synchronously driven by the lifting mechanism to suck seawater of different depths upward in sections through the suction head assembly and the hose;

[0010] The fixed bracket is fixed in the cavity of the buoy body, and the sampling cylinder is sleeved outside the fixed bracket;

[0011] The sampling cylinder is provided with a plurality of sample storage cavities distributed in an annular manner around the fixed bracket, and the sample storage cavities are used to receive water samples sucked by the pump suction tube assembly in sections;

[0012] The transmission mechanism drives the sampling cylinder to rotate intermittently and switch the position of the sample storage chamber for receiving the water sample under the reciprocating drive of the reciprocating plug;

[0013] The detection mechanism cooperates with the intermittent rotation of the sampling cylinder to seal and press on the top of the sample storage cavity and detect water samples at different levels.

[0014] Preferably, the suction head assembly includes a shell, a circle of interception net is fixed on the periphery of the shell, an inner tube is fixed in the center of the shell, the bottom end of the hose is connected to the inner tube, the inner tube is provided with a drainage hole at a position inside the shell, and the bottom end of the suspension rope is fixed to the shell.

[0015] Preferably, the lifting mechanism includes a fixed plate, which is fixed in the cavity of the buoy body, a motor is fixed to one side of the fixed plate, the output shaft of the motor passes through the fixed plate and is fixed with a winding roller, a turntable is fixed to the end of the winding roller away from the motor, and a pin shaft eccentrically arranged with the turntable is fixed on the end face of the turntable.

[0016] Preferably, the pump suction pipe group includes an air disk, a guide tube is fixed on one side of the air disk, the guide tube is vertically fixed in the cavity of the buoy body, the guide tube is provided with two ball heads inside the upper and lower parts of the air disk, a clamping sleeve is fixed on the inner wall of the guide tube for limiting the upward and downward movement of the two ball heads, an elastic membrane is fixed on the inner wall of the air disk close to the guide tube, an air pipe is fixed on the side of the air disk away from the guide tube, and the air pipe is communicated with the air disk, a fixed pulley is rotatably connected to one side of the bottom of the guide tube, and the end of the suspension rope away from the suction head assembly passes around the fixed pulley and is fixed to the winding roller.

[0017] Preferably, the reciprocating plug includes a rocker arm, which is hinged on a pin shaft, and a thrust rod is hinged on one end of the rocker arm away from the pin shaft. The end of the thrust rod away from the rocker arm extends into the trachea and is fixed with a piston that slides in contact with the inner wall of the trachea, and a side surface of the thrust rod is provided with a strip tooth surface.

[0018] Preferably, the fixed bracket includes a positioning column, the positioning column is fixed to the bottom wall of the cavity of the buoy body, a tray for supporting the sampling cylinder is fixed to the outer side of the bottom of the positioning column, and a pressure cap is threadedly connected to the top of the positioning column.

[0019] Preferably, a ratchet disk is fixed on the top of the sampling cylinder, a plurality of lifting blocks distributed in a ring around the positioning column are fixed on the top surface of the ratchet disk, and the lifting blocks are arranged alternately with the sample storage cavity, and the bottom of the sample storage cavity is filled with a bottom plug.

[0020] Preferably, the transmission mechanism includes a rotating shaft, which is fixed on the top wall of the cavity of the buoy body. The bottom of the rotating shaft is rotatably connected to a rotating block. One side of the rotating block is fixed with fan-shaped teeth meshing with the bar tooth surface. The other side of the rotating block is hinged with a push claw and a clamping claw at the bottom. The middle positions of the push claw and the clamping claw are fixed with spring rods. The spring rods of the push claw and the clamping claw are elastically connected by a tension spring. The bottom ends of the push claw and the clamping claw respectively press against the tooth surface of the ratchet disk through the elastic force of the tension spring.

[0021] Preferably, the detection mechanism includes a guide rod, which is slidably connected to a pressure cover, a convex ring is fixed to the outer side of the guide rod, and the convex ring is elastically connected to the pressure cover through a spring, a sealing cover on the rotation path of the lifting block is fixed to the bottom end of the guide rod, a water inlet pipe is fixed through the sealing cover, an end of the water inlet pipe away from the sealing cover is communicated with the upper inner cavity of the guide pipe, and a detection probe is fixed to the bottom surface of the sealing cover.

[0022] Based on the above-mentioned distributed connection type red tide detection device, the present invention also proposes a method for using the detection device, including the following steps: the buoy body is arranged at the red tide detection point and fixed by the anchor chain and the clamp fish bolt at the bottom of the anchor chain, the suction head assembly is released deep in the sea and close to the seabed, and when detection is needed, the lifting mechanism works and gradually lifts the suction head assembly upward through the lifting rope, and the reciprocating plug is synchronously driven by the lifting mechanism to suck the water sample upward to the pump suction pipe group through the suction head assembly and the hose, and the pump suction pipe group discharges it into the sample storage cavity of the sampling cylinder, and as the height of the suction head assembly rises, the transmission mechanism is driven by the reciprocating plug to drive the sampling cylinder to intermittently rotate and switch the position of the sample storage cavity for receiving the water sample. In this process, the detection mechanism can cooperate with the intermittent rotation of the sampling cylinder to seal and press on the top of the sample storage cavity, so as to realize the detection and stratified sampling of red tide water samples of different depths.

[0023] The beneficial effects of the present invention are:

[0024] 1. In the present invention, a pump suction tube group and a lifting mechanism, a reciprocating plug, a fixed bracket, a sampling cylinder, a transmission mechanism and a detection mechanism connected to the pump suction tube group are arranged in the buoy body. The motor drives the winding roller to roll and rewind the suspension rope. The suction head assembly is gradually lifted upward through the suspension rope under the transmission of the fixed pulley. While the winding roller rewinds the suspension rope, it drives the turntable to rotate. The eccentrically arranged pin shaft drives the rocker arm, and then the piston is reciprocated by the thrust rod, so that the sucked water sample can be intermittently added into the sample storage chamber through the water inlet pipe. Compared with the prior art, the present invention can prevent the terminal suction head assembly from being in a water absorbing state for a long time, causing underwater debris to block the interception net, and keep the pipeline smooth through intermittent water absorption;

[0025] 2. In the present invention, during the reciprocating motion of the thrust rod, the engagement of the strip-shaped tooth surface on one side of the thrust rod with the sector-shaped tooth can drive the rotating block to reciprocate around the rotating shaft as the rotation center, and then the push claw on the bottom side of the rotating block pushes the tooth surface of the ratchet disk, so that the sampling cylinder rotates counterclockwise by a certain angle until the thrust rod moves to the right to the maximum thread. At this time, the clamping claw is automatically clamped on the tooth surface of the ratchet disk under the elastic force of the tension spring, so that the sampling cylinder is kept in a fixed position. At this time, the detection mechanism is just switched from the original corresponding sample storage cavity to the next sample storage cavity. Compared with the prior art, the present invention can detect water samples of different depths by the detection probe through the position switching of the sampling cylinder, and store the samples through the sample storage cavity;

[0026] 3. In the present invention, when the sample storage chamber of the sampling cylinder switches to the next rotational position, the cover can be pushed upward by the lifting block on the upper end surface of the ratchet disk to overcome the elastic force of the spring. When the sampling cylinder rotates and the cover misses the lifting block, the cover can automatically bounce downward under the elastic force of the spring, so that the water inlet pipe and the detection probe on the bottom of the cover extend into the sample storage chamber to complete the water sample filling and detection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a structural schematic diagram of a distributed connection type red tide detection device proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the half-section structure of the buoy body proposed by the present invention;

[0030] Figure 3 A schematic diagram of a half-section structure of a suction head assembly proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the lifting mechanism structure proposed by the present invention;

[0032] Figure 5 A schematic diagram of a half-section structure of a pump suction pipe assembly proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the fixed bracket and the sampling cylinder proposed by the present invention;

[0034] Figure 7 It is a schematic diagram of the transmission mechanism structure proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the half-section structure of the fixed bracket and the sampling cylinder proposed in the present invention;

[0036] Fig. 9 for Figure 2 The enlarged structural diagram at A in the middle;

[0037] In the figure: 1. buoy body; 2. hose; 3. suction head assembly; 31. shell; 32. interception net; 33. inner tube; 34. drainage hole; 4. lifting rope; 5. pump suction tube assembly; 51. air disc; 52. guide tube; 53. ferrule; 54. ball head; 55. elastic membrane; 56. air pipe; 57. fixed pulley; 6. lifting mechanism; 61. fixed plate; 62. motor; 63. winding roller; 64. turntable; 65. pin shaft; 7. reciprocating plug; 71. rocker arm; 72. thrust rod; 73. piston; 74. bar gear surface; 8, fixed bracket; 81, positioning column; 82, tray; 83, pressure cover; 9, sampling cylinder; 91, sample storage chamber; 92, ratchet plate; 93, lifting block; 94, bottom plug; 10, transmission mechanism; 101, rotating shaft; 102, rotating block; 103, fan-shaped teeth; 104, push claw; 105, clamping claw; 106, spring rod; 107, tension spring; 11, detection mechanism; 111, guide rod; 112, convex ring; 113, spring; 114, cover; 115, detection probe; 116, water inlet pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 and Figure 2 The present invention provides a technical solution: a distributed connection type red tide detection device, comprising a buoy body 1 with a cavity, a pump suction tube group 5 is fixed in the cavity of the buoy body 1, the lower end of the pump suction tube group 5 is connected to a suction head assembly 3 through a hose 2, a suspension rope 4 is fixed on the suction head assembly 3, and a lifting mechanism 6, a reciprocating plug 7, a fixed bracket 8, a sampling cylinder 9, a transmission mechanism 10 and a detection mechanism 11 are distributed in the buoy body 1.

[0040] See also Figure 2 and Figure 5 The pump suction pipe group 5 includes an air disc 51, a guide pipe 52 is fixed on one side of the air disc 51, and the guide pipe 52 is vertically fixed in the cavity of the buoy body 1. The guide pipe 52 is located above and below the air disc 51 and is provided with two ball heads 54. A sleeve 53 is fixed on the inner wall of the guide pipe 52 for limiting the upward and downward movement of the two ball heads 54. An elastic membrane 55 is fixed on the inner wall of the air disc 51 on the side close to the guide pipe 52, and an air pipe 56 is fixed on the side of the air disc 51 away from the guide pipe 52, and the air pipe 56 is communicated with the air disc 51. A fixed pulley 57 is rotatably connected to one side of the bottom of the guide pipe 52, and one end of the suspension rope 4 away from the suction head assembly 3 passes around the fixed pulley 57 and is fixed to the winding roller 63. When the piston 73 moves to the right, a negative pressure is generated in the inner cavity of the air disc 51 on the right side of the elastic membrane 55, thereby causing the elastic membrane 55 to deviate to the right and on the left side of the elastic membrane 55 Negative pressure is formed, and the ball head 54 located at a high position closes the through hole of the upper guide tube 52 under the action of negative pressure, and the ball head 54 located at a low position is lifted up under the action of negative pressure to open the through hole of the lower guide tube 52, so that the water sample sucked by the suction head assembly 3 and the hose 2 enters the inner cavity of the guide tube 52 on the left side of the elastic membrane 55. When the piston 73 moves to the left, the air pressure in the inner cavity of the air disk 51 located on the right side of the elastic membrane 55 increases, thereby causing the elastic membrane 55 to deviate to the left, compressing the inner cavity space of the guide tube 52 on the left side of the elastic membrane 55, and the ball head 54 located at a low position closes the through hole of the lower guide tube 52 under the action of negative pressure, and the ball head 54 located at a high position is lifted up under the action of pressure to open the through hole of the upper guide tube 52, so that the sucked water sample can be added into the sample storage chamber 91 through the water inlet pipe 116, and the water sample is tested by the detection probe 115.

[0041] See also Figure 2 and Figure 4 The lifting mechanism 6 is used to lift the suction head assembly 3 upward through the lifting rope 4. The lifting mechanism 6 includes a fixed plate 61, which is fixed in the cavity of the buoy body 1. A motor 62 is fixed on one side of the fixed plate 61. The output shaft of the motor 62 passes through the fixed plate 61 and is fixed with a winding roller 63. A turntable 64 is fixed on the end of the winding roller 63 away from the motor 62. A pin shaft 65 eccentrically arranged with the turntable 64 is fixed on the end surface of the turntable 64. The motor 62 drives the winding roller 63 to roll and reel in the lifting rope 4, and the suction head assembly 3 is gradually lifted upward through the lifting rope 4 under the transmission of the fixed pulley 57.

[0042] See also Figure 2 and Figure 5 The reciprocating plug 7 is synchronously driven by the lifting mechanism 6 to suck seawater of different depths upward in sections through the suction head assembly 3 and the hose 2. The reciprocating plug 7 includes a rocker arm 71, which is hinged on the pin 65. A thrust rod 72 is hinged on one end of the rocker arm 71 away from the pin 65. The end of the thrust rod 72 away from the rocker arm 71 extends into the air pipe 56 and is fixed with a piston 73 that slides and fits with the inner wall of the air pipe 56. A strip tooth surface 74 is provided on one side of the thrust rod 72. The winding roller 63 drives the turntable 64 to rotate while winding the sling 4. The eccentrically arranged pin 65 drives the rocker arm 71, and then the piston 73 is pushed and pulled reciprocatingly through the thrust rod 72.

[0043] See also Figure 2 and Figure 6 The fixed bracket 8 is fixed in the cavity of the buoy body 1, and the sampling cylinder 9 is sleeved outside the fixed bracket 8. The fixed bracket 8 includes a positioning column 81, and the positioning column 81 is fixed on the bottom wall of the cavity of the buoy body 1. A tray 82 for supporting the sampling cylinder 9 is fixed to the outer side of the bottom of the positioning column 81, and a pressure cap 83 is threadedly connected to the top of the positioning column 81.

[0044] See also Figure 6 and Figure 8 A plurality of sample storage chambers 91 are provided in the sampling cylinder 9 and are distributed in an annular manner around the fixed bracket 8. The sample storage chamber 91 is used to receive the water sample sucked by the pump suction tube group 5 in sections. A ratchet plate 92 is fixed to the top of the sampling cylinder 9. A plurality of lifting blocks 93 are fixed to the top surface of the ratchet plate 92 and are distributed in an annular manner around the positioning column 81. The lifting blocks 93 are arranged alternately with the sample storage chamber 91, and the bottom of the sample storage chamber 91 is filled with a bottom plug 94.

[0045] See also Figure 2 and Figure 7The transmission mechanism 10 drives the sampling cylinder 9 to rotate intermittently under the reciprocating drive of the reciprocating plug 7 to switch the position of the sample storage chamber 91 for receiving the water sample. The transmission mechanism 10 includes a rotating shaft 101, which is fixed on the top wall of the cavity of the buoy body 1. The bottom of the rotating shaft 101 is rotatably connected to a rotating block 102. Fig. 9 As shown, a sector tooth 103 meshing with the strip tooth surface 74 is fixed on one side of the rotating block 102, and a push claw 104 and a clamping claw 105 are hinged at the bottom of the other side of the rotating block 102. A spring rod 106 is fixed at the middle position of the push claw 104 and the clamping claw 105. The spring rod 106 of the push claw 104 and the clamping claw 105 are elastically connected by a tension spring 107. The bottom ends of the push claw 104 and the clamping claw 105 are respectively pressed against the tooth surface of the ratchet plate 92 by the elastic force of the tension spring 107. When the thrust rod 72 moves to the right, the engagement of the strip tooth surface 74 on one side of the thrust rod 72 with the sector tooth 103 can drive the rotating block 102 to rotate clockwise with the rotating shaft 101 as the rotation center, and then the bottom of the rotating block 102 is rotated clockwise. The push claw 104 on one side pushes the tooth surface of the ratchet disk 92, causing the sampling cylinder 9 to rotate counterclockwise by a certain angle until the thrust rod 72 moves to the right to the maximum thread. At this time, the claw 105 is automatically clamped on the tooth surface of the ratchet disk 92 under the elastic force of the tension spring 107, so that the sampling cylinder 9 is kept in a fixed position. After the sample storage chamber 91 on the sampling cylinder 9 is switched, the thrust rod 72 begins to move to the left. During this period, the engagement of the strip tooth surface 74 and the fan-shaped tooth 103 can drive the rotating block 102 to rotate counterclockwise with the rotating shaft 101 as the rotation center. The rotating block 102 begins to drag the push claw 104 to return to the initial position, and the spring rod 106 clamps the tooth surface of the ratchet disk 92, so that the sampling cylinder 9 is kept in a fixed position.

[0046] See also Figure 6 and Figure 8The detection mechanism 11 cooperates with the intermittent rotation of the sampling cylinder 9 to seal and press on the top of the sample storage chamber 91 and detect water samples at different levels. The detection mechanism 11 includes a guide rod 111, which is slidably connected to the pressure cover 83. A convex ring 112 is fixed to the outer side of the guide rod 111. The convex ring 112 is elastically connected to the pressure cover 83 through a spring 113. A sealing cover 114 located on the rotation path of the lifting block 93 is fixed to the bottom end of the guide rod 111. A water inlet pipe 116 is fixedly passed through the sealing cover 114. The end of the water inlet pipe 116 away from the sealing cover 114 is connected to the guide pipe 52. The upper inner cavity is communicated, and a detection probe 115 is fixed to the bottom surface of the cover 114. During the process of switching the sample storage cavity 91 of the sampling cylinder 9 to the next rotational position, the cover 114 can be pushed upward by the lifting block 93 on the upper end surface of the ratchet disk 92 to overcome the elastic force of the spring 113. When the sampling cylinder 9 rotates to make the cover 114 miss the lifting block 93, the cover 114 can automatically bounce downward under the elastic force of the spring 113, so that the water inlet pipe 116 and the detection probe 115 on the bottom surface of the cover 114 extend into the sample storage cavity 91 to complete the water sample filling and detection operations.

[0047] See also Figure 3 The suction head assembly 3 includes a shell 31, a circle of interception net 32 ​​is fixed on the periphery of the shell 31, an inner tube 33 is fixed in the center of the shell 31, the bottom end of the hose 2 is connected to the inner tube 33, the inner tube 33 is located in the shell 31 and has a drainage hole 34, and the bottom end of the hanging rope 4 is fixed on the shell 31.

[0048] Based on the above embodiments, the present invention also proposes a method for using a detection device, comprising the following steps: the buoy body 1 is arranged at the red tide detection point and fixed by the anchor chain and the clamp fish bolt at the bottom of the anchor chain, the suction head assembly 3 is released deep in the sea and close to the seabed, and when detection is required, the lifting mechanism 6 works and gradually lifts the suction head assembly 3 upward through the suspension rope 4, and the reciprocating plug 7 is synchronously driven by the lifting mechanism 6 to suck the water sample upward to the pump suction tube group 5 through the suction head assembly 3 and the hose 2, and the pump suction tube group 5 discharges the water sample into the sample storage chamber 91 of the sampling cylinder 9, and as the height of the suction head assembly 3 rises, the transmission mechanism 10 is driven by the reciprocating plug 7 to drive the sampling cylinder 9 to intermittently rotate and switch the position of the sample storage chamber 91 for receiving the water sample. In this process, the detection mechanism 11 can cooperate with the intermittent rotation of the sampling cylinder 9 to seal and press on the top of the sample storage chamber 91, so as to realize the detection and stratified sampling of red tide water samples of different depths.

[0049] The working principle and use process of the present invention are as follows: the motor 62 drives the winding roller 63 to roll and reel in the sling rope 4, and the suction head assembly 3 is gradually lifted upward through the sling rope 4 under the transmission of the fixed pulley 57, and the winding roller 63 reels the sling rope 4 while driving the turntable 64 to rotate, and the eccentrically arranged pin shaft 65 drives the rocker arm 71, and then the piston 73 is reciprocated through the thrust rod 72. Figure 5 As shown, when the piston 73 moves to the right, negative pressure is generated in the inner cavity of the air disc 51 on the right side of the elastic membrane 55, thereby causing the elastic membrane 55 to deviate to the right and forming negative pressure on the left side of the elastic membrane 55. The ball head 54 located at the upper position moves downward under the action of the negative pressure to close the through hole of the upper flow guide tube 52, and the ball head 54 located at the lower position moves upward under the action of the negative pressure to open the through hole of the lower flow guide tube 52, so that the water sample sucked by the suction head assembly 3 and the hose 2 enters the inner cavity of the flow guide tube 52 on the left side of the elastic membrane 55. When the elastic membrane 55 moves to the left, the air pressure in the inner cavity of the air disk 51 on the right side of the elastic membrane 55 increases, thereby causing the elastic membrane 55 to deviate to the left, compressing the inner cavity space of the flow guide tube 52 on the left side of the elastic membrane 55, and the ball head 54 at the lower position closes the through hole of the lower flow guide tube 52 under the action of negative pressure, and the ball head 54 at the higher position is lifted upward under the action of pressure to open the through hole of the upper flow guide tube 52, so that the inhaled water sample can be added into the sample storage cavity 91 through the water inlet pipe 116, and the water sample is tested through the detection probe 115;

[0050] During the movement of the thrust rod 72 to the right, the engagement of the strip-shaped tooth surface 74 on one side of the thrust rod 72 and the sector-shaped tooth 103 can drive the rotating block 102 to rotate clockwise with the rotating shaft 101 as the rotation center, and then the pushing claw 104 on one side of the bottom of the rotating block 102 pushes the tooth surface of the ratchet disk 92, so that the sampling cylinder 9 rotates counterclockwise by a certain angle until the thrust rod 72 moves to the right to the maximum thread. At this time, the claw 105 is automatically clamped on the tooth surface of the ratchet disk 92 under the elastic force of the tension spring 107, so that the sampling cylinder 9 is kept in a fixed position. At this time, the detection mechanism 11 is just converted from the original corresponding sample storage cavity 91 to the next sample storage cavity 91. When the thrust rod 72 moves to the right, the inner cavity space of the guide tube 52 on the left side of the elastic membrane 55 is in a state of negative pressure water absorption, that is, the pipeline of the water inlet pipe 116 is blocked, so as to prevent the water sample from leaking. After the sample storage chamber 91 on the sampling cylinder 9 is switched, the thrust rod 72 starts to move to the left, and the inner cavity space of the flow guide tube 52 on the left side of the elastic membrane 55 is in a compressed state, that is, the pipeline of the water inlet pipe 116 is opened, so that the water sample can just be added to the sample storage chamber 91 below. During this period of time, the engagement of the strip tooth surface 74 and the fan-shaped tooth 103 can drive the rotating block 102 to rotate counterclockwise with the rotating shaft 101 as the rotation center. The rotating block 102 starts to drag the push claw 104 to return to the initial position, and the spring rod 106 clamps the tooth surface of the ratchet disk 92, so that the sampling cylinder 9 is kept in a fixed position. During this period of time, the detection probe 115 detects the water sample in the inner cavity of the sample storage chamber 91 below. By switching the position of the sampling cylinder 9, the detection probe 115 can detect water samples of different depths and store the samples in the sample storage chamber 91.

[0051] During the process of the sample storage chamber 91 of the above-mentioned sampling cylinder 9 switching to the next rotational position, the cover 114 can be pushed upward by the squeezing of the lifting block 93 on the upper end surface of the ratchet disk 92 to overcome the elastic force of the spring 113. When the sampling cylinder 9 rotates to make the cover 114 miss the lifting block 93, the cover 114 can automatically bounce downward under the elastic force of the spring 113, so that the water inlet pipe 116 and the detection probe 115 on the bottom surface of the cover 114 extend into the sample storage chamber 91 to complete the water sample filling and detection operations.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A distributed connection type red tide detection device, comprising a buoy body (1) having a cavity, characterized in that: A pump suction tube group (5) is fixed in the cavity of the buoy body (1), the lower end of the pump suction tube group (5) is connected to a suction head assembly (3) through a hose (2), a suspension rope (4) is fixed on the suction head assembly (3), and a lifting mechanism (6), a reciprocating plug (7), a fixed bracket (8), a sampling cylinder (9), a transmission mechanism (10) and a detection mechanism (11) are distributed in the buoy body (1); The lifting mechanism (6) is used to lift the suction head assembly (3) upwards via the lifting rope (4); The reciprocating plug (7) is synchronously driven by the lifting mechanism (6) to suck seawater at different depths upward in sections through the suction head assembly (3) and the hose (2); The fixed bracket (8) is fixed in the cavity of the buoy body (1), and the sampling cylinder (9) is sleeved outside the fixed bracket (8); The sampling cylinder (9) is provided with a plurality of sample storage chambers (91) distributed in an annular manner around the fixed bracket (8), and the sample storage chambers (91) are used to receive water samples sucked in sections by the pump suction tube group (5); The transmission mechanism (10) drives the sampling cylinder (9) to rotate intermittently to switch the position of the sample storage chamber (91) for receiving the water sample under the reciprocating drive of the reciprocating plug (7); The detection mechanism (11) cooperates with the intermittent rotation of the sampling cylinder (9) to seal and press on the top of the sample storage cavity (91) and detect water samples at different levels.

2. A distributed connection type red tide detection device according to claim 1, characterized in that: The suction head assembly (3) comprises a shell (31), a circle of interception net (32) is fixed on the periphery of the shell (31), an inner tube (33) is fixed at the center of the shell (31), the bottom end of the hose (2) is connected to the inner tube (33), a drainage hole (34) is opened at a position where the inner tube (33) is located inside the shell (31), and the bottom end of the suspension rope (4) is fixed on the shell (31).

3. A distributed connection type red tide detection device according to claim 1, characterized in that: The lifting mechanism (6) includes a fixed plate (61), and the fixed plate (61) is fixed in the cavity of the buoy body (1). A motor (62) is fixed on one side of the fixed plate (61). The output shaft of the motor (62) passes through the fixed plate (61) and is fixed with a winding roller (63). A turntable (64) is fixed at one end of the winding roller (63) away from the motor (62), and a pin shaft (65) eccentrically arranged with the turntable (64) is fixed on the end face of the turntable (64).

4. A distributed connection type red tide detection device according to claim 3, characterized in that: The pump suction pipe assembly (5) comprises an air disk (51), a flow guide tube (52) is fixed on one side of the air disk (51), the flow guide tube (52) is vertically fixed in the cavity of the buoy body (1), the flow guide tube (52) is provided with two ball heads (54) located above and below the air disk (51), and a clamping sleeve (53) for limiting the upward and downward movement of the two ball heads (54) is fixed on the inner wall of the flow guide tube (52), and the air disk (51) is provided with a plurality of air guide tubes (52). An elastic membrane (55) is fixed on the inner wall of the side close to the guide tube (52), an air pipe (56) is fixed on the side of the air disk (51) away from the guide tube (52), and the air pipe (56) is communicated with the air disk (51), and a fixed pulley (57) is rotatably connected to one side of the bottom of the guide tube (52), and one end of the suspension rope (4) away from the suction head assembly (3) passes around the fixed pulley (57) and is fixed on the winding roller (63).

5. A distributed connection type red tide detection device according to claim 4, characterized in that: The reciprocating plug (7) comprises a rocker arm (71), the rocker arm (71) is hinged on a pin shaft (65), one end of the rocker arm (71) away from the pin shaft (65) is hinged with a thrust rod (72), one end of the thrust rod (72) away from the rocker arm (71) extends into the air pipe (56) and is fixed with a piston (73) that is slidably fitted with the inner wall of the air pipe (56), and one side surface of the thrust rod (72) is provided with a strip-shaped tooth surface (74).

6. A distributed connection type red tide detection device according to claim 5, characterized in that: The fixed bracket (8) includes a positioning column (81), and the positioning column (81) is fixed on the bottom wall of the cavity of the buoy body (1). A tray (82) for supporting the sampling cylinder (9) is fixed to the outer side of the bottom of the positioning column (81), and a pressure cover (83) is threadedly connected to the top of the positioning column (81).

7. A distributed connection type red tide detection device according to claim 6, characterized in that: A ratchet disc (92) is fixed on the top of the sampling cylinder (9), and a plurality of lifting blocks (93) distributed in an annular manner around the positioning column (81) are fixed on the top surface of the ratchet disc (92). The lifting blocks (93) and the sample storage cavity (91) are arranged alternately, and the bottom of the sample storage cavity (91) is filled with a bottom plug (94).

8. A distributed connection type red tide detection device according to claim 7, characterized in that: The transmission mechanism (10) includes a rotating shaft (101), which is fixed on the top wall of the cavity of the buoy body (1). The bottom of the rotating shaft (101) is rotatably connected to a rotating block (102). One side of the rotating block (102) is fixed with a fan-shaped tooth (103) meshing with the strip tooth surface (74). The bottom of the other side of the rotating block (102) is hinged with a push claw (104) and a clamping claw (105). The middle positions of the push claw (104) and the clamping claw (105) are fixed with a spring rod (106). The spring rods (106) of the push claw (104) and the clamping claw (105) are elastically connected through a tension spring (107). The bottom ends of the push claw (104) and the clamping claw (105) are respectively pressed against the tooth surface of the ratchet disk (92) through the elastic force of the tension spring (107).

9. A distributed connection type red tide detection device according to claim 7, characterized in that: The detection mechanism (11) comprises a guide rod (111), wherein the guide rod (111) is slidably connected to a pressure cover (83), a convex ring (112) is fixed to the outer side of the guide rod (111), and the convex ring (112) is elastically connected to the pressure cover (83) via a spring (113), a sealing cover (114) located on the rotation path of the lifting block (93) is fixed to the bottom end of the guide rod (111), a water inlet pipe (116) is fixedly passed through the sealing cover (114), and one end of the water inlet pipe (116) away from the sealing cover (114) is in communication with the upper inner cavity of the guide pipe (52), and a detection probe (115) is fixed to the bottom surface of the sealing cover (114).

10. A method for using a detection device, according to the distributed connection type red tide detection device of claim 1, characterized in that: The following steps are involved: The buoy body (1) is arranged at the red tide detection point and fixed by an anchor chain and a clamp bolt at the bottom of the anchor chain. The suction head assembly (3) is released deep in the sea and close to the seabed. When detection is required, the lifting mechanism (6) works and gradually lifts the suction head assembly (3) upwards through the suspension rope (4). The reciprocating plug (7) is synchronously driven by the lifting mechanism (6) to suck the water sample upwards to the pump suction pipe assembly (5) through the suction head assembly (3) and the hose (2). (5) is discharged into the sample storage chamber (91) of the sampling cylinder (9), and as the height of the suction head assembly (3) rises, the transmission mechanism (10) is driven by the reciprocating plug (7) to drive the sampling cylinder (9) to intermittently rotate and switch the position of the sample storage chamber (91) for receiving the water sample. During this process, the detection mechanism (11) can cooperate with the intermittent rotation of the sampling cylinder (9) to seal and press on the top of the sample storage chamber (91), thereby realizing the detection and stratified sampling of red tide water samples of different depths.

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