A water quality monitoring device for river environment management

Abstract

The invention relates to the technical field of water quality monitoring, and discloses a water quality monitoring device for river environment management, comprising a pipe body, a mounting box, a motor and an opening and closing mechanism, wherein four guide frames are mounted on the pipe body, a guide rod is slidably mounted in each of the four guide frames, a guide tube is fixedly connected to each of the four guide rods, a transmission shaft is arranged in each of the four guide tubes, a drive shaft is transmission-mounted in each of the four transmission shafts, the four drive shafts are transmission-connected to the opening and closing mechanism, a bottling mechanism is connected to the bottom ends of the four guide tubes, the four transmission shafts are transmission-connected to the four bottling mechanisms, and sample bottles are installed on the four bottling mechanisms respectively; the device has the advantages of simultaneously sinking four sampling bottles into water at one time, and evenly distributing the four sampling bottles in water from top to bottom at one time, thereby realizing a stratified sampling effect, and can conveniently reduce the large deviation between the actual stratified sampling accuracy and effect and the expected sampling accuracy and effect, thereby effectively improving the sampling accuracy and effect.

Description

Technical Field

[0001] The invention relates to the technical field of water quality monitoring, and in particular to a water quality monitoring device for river environment management. Background Art

[0002] When taking stratified sampling of water in a river channel, there are generally two stratified sampling methods; one is to use cables to successively sink multiple sampling bottles into water at different depths for sampling. This sampling method requires the sampling bottles to enter and exit the water body multiple times, and the sinking depth of each sampling bottle is difficult to control accurately, resulting in inaccurate stratified sampling; the other is to use cables to sink a sampling device with stratified sampling into the water. This sampling device has multiple sampling bottles installed at intervals in the vertical direction. Through one sinking, multiple sampling bottles are sunk into the water at the same time, and then each sampling bottle is adjusted to a different sinking depth, and each sampling bottle is sampled after the sinking depth of the sampling bottle is adjusted, thereby achieving the effect of stratified sampling.

[0003] In both of the above methods, cables need to be lowered into the river channel multiple times during stratified sampling so that each sampling bottle can sink into the water at different depths. However, since the water in the river channel is always in a flowing state, the sampling bottles will also move in the water with the flow of the water, resulting in different sinking depths of the two adjacent sampling bottles above and below, resulting in a large deviation between the actual stratified sampling accuracy and effect and the expected sampling accuracy and effect, and this deviation is not easy to reduce to within the allowable range. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a water quality monitoring device for river environment management, which has the advantages of sinking four sampling bottles into the water at the same time and evenly distributing the four sampling bottles in the water from top to bottom at one time, thereby achieving a stratified sampling effect. It can conveniently reduce the deviation between the actual stratified sampling accuracy and effect and the expected sampling accuracy and effect, and effectively improve the sampling accuracy and effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water quality monitoring device for river environment management, comprising a pipe body, a mounting box is fixed on the top of the pipe body, a first mounting cavity and a second mounting cavity are formed in the mounting box, a motor is mounted in the first mounting cavity, an output end of the motor extends to the second mounting cavity and is transmission-connected with an opening and closing mechanism, four guide frames are evenly spaced and installed on the inner wall of the pipe body along the circumferential direction, and the guide frames are long elliptical frames; the guide frames are arranged downward and inclined to the central axis of the pipe body, and the distances from the bottom ends of the guide frames to the bottom end faces of the pipe body are different and decrease in sequence; a guide rod is slidably installed in each of the four guide frames, the guide rod is vertically arranged, and a guide tube is fixedly connected to each of the four guide rods, a transmission shaft is arranged in each of the four guide tubes, and a drive shaft is transmission-installed in each of the four transmission shafts, the top ends of the four drive shafts extend to the second mounting cavity and are transmission-connected with the opening and closing mechanism, the bottom ends of the four guide tubes are respectively connected to bottling mechanisms, the four transmission shafts are transmission-connected with the four bottling mechanisms, and sample bottles are respectively installed on the four bottling mechanisms.

[0006] Preferably, the installation box is provided with a guide groove arranged along the radial direction of the tube body, the guide groove connects the inner cavity of the tube body and the second installation cavity, four guide grooves are provided, and the four guide grooves are distributed in a circular array with the central axis of the tube body as the center, and the four drive shafts are respectively matched with the four guide grooves.

[0007] Preferably, the opening and closing mechanism includes a rotating shaft, a turntable fixedly mounted on the rotating shaft, and a driving gear, and the output end of the motor is transmission-connected to the rotating shaft; a driving groove is provided on the turntable, one end of the driving groove extends toward the middle of the turntable and is connected to a secondary groove, the extension direction of the driving groove is set at an angle to the radial direction of the turntable, and the secondary groove is an arc-shaped groove concentric with the turntable; the driving shaft cooperates with the driving groove and the secondary groove.

[0008] Preferably, the driving shaft includes a shaft rod, the top end of which passes through the guide groove and is fixedly connected to a gear shaft, the shaft portion of the gear shaft cooperates with the driving groove and the auxiliary groove, the tooth portion of the gear shaft abuts against the top surface of the turntable and is transmission-connected to the driving gear; the bottom end of the shaft rod is fixedly connected to a prism, the prism penetrates into the transmission shaft along the axial direction of the transmission shaft, and the prism forms a planar sliding fit with the transmission shaft.

[0009] Preferably, the bottling mechanism includes a mounting body, which is fixed on the lower surface of the catheter; the mounting body is provided with a vertically arranged guide cavity and a transversely arranged third mounting cavity, the guide cavity is connected with the third mounting cavity, the guide cavity runs through both ends of the mounting body, and the sample bottle is threadedly connected to the lower part of the cavity wall of the guide cavity; a guide cover is arranged on the upper part of the guide cavity, a plurality of guide holes are opened on the upper part of the guide cover, a retaining ring is arranged below the guide cover, the retaining ring is located at the connection point between the guide cavity and the third mounting cavity and is threadedly connected to the cavity wall of the guide cavity, and a spring is fixedly connected between the retaining ring and the guide cover.

[0010] Preferably, a transmission rod is provided in the third installation cavity, the transmission rod is located below the retaining ring, and both ends of the transmission rod are embedded in and rotatably connected to the installation body, a No. 1 bevel gear and a cam are fixedly sleeved on the transmission rod, and a push rod is fixedly connected to the top wall of the guide cover, and the lower end of the push rod passes through the inner side of the retaining ring and is transmission connected to the cam; a No. 2 bevel gear is meshedly connected to the No. 1 bevel gear, and the bottom end of the transmission shaft passes through the installation body and extends into the third installation cavity and is fixedly connected to the No. 2 bevel gear.

[0011] Preferably, the vertical cross-sectional shape of the deflector cover is an inverted T-shape; the transmission shaft located in the mounting body is a cross-shaped structure, and the transmission shaft and the mounting body are rotatably matched.

[0012] Preferably, a bracket is fixedly connected to the lower surface of the tube body, and a hanging ring is provided on the top of the installation box.

[0013] Compared with the prior art, the present invention provides a water quality monitoring device for river environment management, which has the following beneficial effects:

[0014] 1. It has the advantages of sinking four sampling bottles into the water at the same time and distributing the four sampling bottles evenly from top to bottom in the water at one time, thus achieving the effect of layered sampling.

[0015] 2. The entire water quality monitoring device can be placed on the ground through the bracket, making it convenient to remove the sample bottle from the mounting body; at the same time, a counterweight can be tied to the bracket to reduce the impact from the flowing water body, so that the actual sampling depth of the four sampling bottles is closer to the expected sampling depth, reducing the deviation between the actual stratified sampling accuracy and effect and the expected sampling accuracy and effect, and effectively improving the sampling accuracy and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 for Figure 2 A magnified view of the structure at center;

[0019] Figure 4 It is a schematic diagram of the structure of the conduit, the transmission shaft, the drive shaft and the bottling mechanism;

[0020] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle.

[0021] Wherein: 1. tube body; 2. mounting box; 21. first mounting cavity; 22. second mounting cavity; 23. guide groove; 3. motor; 4. opening and closing mechanism; 5. guide frame; 6. guide rod; 7. guide tube; 8. transmission shaft; 9. driving shaft; 10. bottling mechanism; 11. sample bottle; 12. bracket; 13. lifting ring; 41. rotating shaft; 42. turntable; 421. driving groove; 422. auxiliary groove; 43. driving gear; 91. shaft rod; 92. gear shaft; 93. prism; 101. mounting body; 1011. flow guide cavity; 1012. third mounting cavity; 102. flow guide cover; 1021. flow guide hole; 1022. push rod; 103. retaining ring; 104. spring; 105. transmission rod; 1051. bevel gear No. 1; 1052. cam; 1053. bevel gear No. 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in 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.

[0023] See also Figures 1 to 5 A water quality monitoring device for river environment management comprises a pipe body 1, a mounting box 2 is fixed on the top of the pipe body 1, a first mounting cavity 21 and a second mounting cavity 22 are formed in the mounting box 2, a motor 3 is mounted in the first mounting cavity 21, an output end of the motor 3 extends into the second mounting cavity 22 and is connected to an opening and closing mechanism 4 in a transmission manner, four guide frames 5 are evenly spaced and mounted on the inner wall of the pipe body 1 along the circumferential direction, and the guide frames 5 are long elliptical frames; the guide frames 5 are arranged downward and inclined to the central axis of the pipe body 1, and the distance from the bottom end of each guide frame 5 to the bottom end surface of the pipe body 1 is The distances are different and decrease successively; a guide rod 6 is slidably installed in each of the four guide frames 5, the guide rod 6 is vertically arranged, and a guide tube 7 is fixedly connected to the four guide rods 6, a transmission shaft 8 is arranged in each of the four guide tubes 7, and a driving shaft 9 is transmission-installed in each of the four transmission shafts 8, and the top ends of the four driving shafts 9 extend to the second installation cavity 22 and are transmission-connected to the opening and closing mechanism 4, the bottom ends of the four guide tubes 7 are respectively connected to a bottling mechanism 10, the four transmission shafts 8 are transmission-connected to the four bottling mechanisms 10, and the four bottling mechanisms 10 are respectively installed with sample bottles 11.

[0024] The connecting wires of the motor 3 (not shown in the figure) pass through the installation box 2 and form a sealed connection with the installation box 2, and the output end of the motor 3 forms a sealed connection with the installation box 2. When in use, the installation box 2 is connected to the cable, and the connecting wires of the motor 3 are connected to the external power supply to power the motor 3; the water quality monitoring device is lowered into the river channel through the cable and lowered to a specified depth in the water; the motor 3 is started, and the opening and closing mechanism 4 rotates forward, driving the four driving shafts 9 to move the same distance along the radial direction of the pipe body 1 and approach the central axis of the pipe body 1, driving the four guide rods 6 to move in the four guide frames 5 respectively, so that the guide rods 6 move downward while moving toward the central axis of the pipe body 1.

[0025] Since the moving distances of the four driving shafts 9 along the radial direction of the tube body 1 are the same, the moving distances of the four guide rods 6 toward the central axis of the tube body 1 are the same, and since the distances of the four inclined guide frames 5 from the bottom end surface of the tube body 1 are different and decrease successively, the moving distances of the four guide rods 6 during the downward movement process increase successively, so that the four bottling mechanisms 10 can be moved to the bottom of the tube body 1 along the inclined moving trajectory respectively, and the four bottling mechanisms 10 can be spaced from top to bottom along the central axis of the tube body 1, so that the four sample bottles 11 are located at different depths in the water.

[0026] The motor 3 continues to work, and the opening and closing mechanism 4 continues to rotate forward, driving the four driving shafts 9 to rotate, so that the four transmission shafts 8 rotate at the same time, so that the tops of the four bottling mechanisms 10 are all opened and four guide channels are formed; water of different depths enters the corresponding sample bottles 11 through the corresponding guide channels; the opening and closing mechanism 4 is driven by the motor 3 to rotate in the opposite direction, so that the four bottling mechanisms 10 are closed, and then, the four bottling mechanisms 10 are pushed to move vertically into the tube body 1 and move toward the inner wall of the tube body 1 at the same time, so that the four bottling mechanisms 10 are reset; the water quality monitoring device is pulled out of the water, the four sample bottles 11 are removed, and the four sample bottles 11 are respectively closed with bottle caps.

[0027] When sampling water in a river, the present water quality monitoring device only needs to be submerged into the water once, and the cooperation of the motor 3, the opening and closing mechanism 4 and the guide frame 5 can realize that the four sample bottles 11 are evenly spaced from top to bottom along the central axis of the tube body 1 below the tube body 1, thereby realizing sampling of water bodies at different depths, ensuring the sampling effect and improving the convenience of the sampling operation.

[0028] As a further explanation of the above technical solution, the installation box 2 is provided with a guide groove 23 arranged along the radial direction of the tube body 1, the guide groove 23 connects the inner cavity of the tube body 1 and the second installation cavity 22, and there are four guide grooves 23. The four guide grooves 23 are distributed in a circular array with the central axis of the tube body 1 as the center, and the four drive shafts 9 are respectively matched with the four guide grooves 23; during the rotation of the opening and closing mechanism 4, the drive shaft 9 can move back and forth in a straight line along the guide groove 23 and rotate back and forth in the guide groove 23.

[0029] The opening and closing mechanism 4 includes a rotating shaft 41, a rotating disk 42 fixedly sleeved on the rotating shaft 41, and a driving gear 43. The output end of the motor 3 is connected to the rotating shaft 41 in transmission. A driving groove 421 is provided on the rotating disk 42. One end of the driving groove 421 extends to the middle of the rotating disk 42 and is connected to a secondary groove 422. The extending direction of the driving groove 421 is set at an angle with the radial direction of the rotating disk 42. The secondary groove 422 is an arc groove concentric with the rotating disk 42. The driving shaft 9 cooperates with the driving groove 421 and the secondary groove 422. When the rotating disk 42 is driven by the motor 3 to rotate, the driving groove 421 rotates and drives the driving shaft 9 to make reciprocating linear movements in the guide groove 23. During the positive rotation of the rotating disk 42, when the driving shaft 9 moves to a position close to the guide groove 23, the driving shaft 9 moves to a position close to the guide groove 23. When the drive shaft 9 moves to the limit position of the central axis of the tube body 1, that is, when the drive shaft 9 moves to the connection point between the drive groove 421 and the auxiliary groove 422, the drive gear 43 meshes with the drive shaft 9, and then, as the turntable 42 further rotates forward, the drive shaft 9 slides forward in the auxiliary groove 422 and rotates forward; after the turntable 42 rotates from forward rotation to reverse rotation, the drive shaft 9 first slides reversely and rotates reversely in the auxiliary groove 422, and after the drive shaft 9 slides to the connection point between the drive groove 421 and the auxiliary groove 422, the drive shaft 9 slides in the guide groove 23 to the side away from the central axis of the tube body 1 under the action of the drive groove 421; when the drive shaft 9 slides to a limit position of the guide groove 23 away from the central axis of the tube body 1, the motor 3 stops working. Through the structure set in this way, the four drive shafts 9 are moved closer to and away from the central axis of the tube body 1 by using the forward and reverse rotation of the motor 3, and the four drive shafts 9 are rotated forward and reversely.

[0030] The driving shaft 9 includes a shaft rod 91, the top end of which passes through the guide groove 23 and is fixedly connected with a gear shaft 92, the shaft portion of the gear shaft 92 cooperates with the driving groove 421 and the auxiliary groove 422, and the tooth portion of the gear shaft 92 abuts against the top surface of the turntable 42 and is transmission-connected with the driving gear 43; when the shaft portion of the gear shaft 92 is located at the connection between the driving groove 421 and the auxiliary groove 422 and when the shaft portion of the gear shaft 92 is located in the auxiliary groove 422, the tooth portion of the gear shaft 92 meshes with the driving gear 43, and the bottom end of the shaft rod 9 is fixedly connected with a prism 93, which penetrates into the driving shaft 8 along the axial direction of the transmission shaft 8, and the prism 93 forms a planar sliding fit with the transmission shaft 8, so that in the process of the driving shaft 9 reciprocating along the guide groove 23, the transmission shaft 8 can reciprocate with the driving shaft 9 and reciprocate up and down, so that when the driving shaft 9 rotates forward and reversely, the transmission shaft 8 can rotate forward and reversely with the driving shaft 9.

[0031] As a further illustration of the above technical solution, the bottling mechanism 10 includes a mounting body 101, which is fixed to the lower surface of the conduit 7; the mounting body 101 has a vertically arranged flow diversion cavity 1011 and a horizontally arranged third mounting cavity 1012, the flow diversion cavity 1011 is communicated with the third mounting cavity 1012, the flow diversion cavity 1011 runs through both ends of the mounting body 101, and the sample bottle 11 is threadedly connected to the lower part of the cavity wall of the flow diversion cavity 1011; a flow diversion cover 102 is arranged on the upper part of the flow diversion cavity 1011, and a plurality of flow diversion holes 1021 are opened on the upper part of the flow diversion cover 102, and a retaining ring 103 is arranged below the flow diversion cover 102, and the retaining ring 103 is located in the flow diversion cavity 1011. A spring 104 is fixedly connected between the retaining ring 103 and the guide cover 102 at the connection point with the third mounting cavity 1012 and the cavity wall of the guide cavity 1011 which is threadedly connected; when the guide cover 102 moves up to the limit position along the guide cavity 1011, the guide hole 1021 moves up to the outside of the mounting body 101, connecting the guide cavity 1011 with the external environment of the mounting body 101, thereby connecting the inner cavity of the sample bottle 11 with the external environment of the bottling mechanism 10, so that the water in the bottling mechanism 10 enters the sample bottle 11 through the guide hole 1021 and the guide cavity 1011, and the air in the sample bottle 11 is discharged through the guide hole 1021; the spring 104 stretches and deforms as the guide cover 102 moves up.

[0032] Furthermore, a transmission rod 105 is provided in the third installation cavity 1012, the transmission rod 105 is located below the retaining ring 103, and both ends of the transmission rod 105 are embedded and rotatably connected to the installation body 101, a first bevel gear 1051 and a cam 1052 are fixedly sleeved on the transmission rod 105, and a top rod 1022 is fixedly connected to the top wall of the guide cover 102, and the lower end of the top rod 1022 passes through the inner side of the retaining ring 103 and is transmission-connected to the cam 1052; the first bevel gear 1051 and the cam 1052 are fixedly sleeved on the transmission rod 105, and the top wall of the guide cover 102 is fixedly connected to the top wall of the guide cover 102, and the lower end of the top rod 1022 passes through the inner side of the retaining ring 103 and is transmission-connected to the cam 1052; 1 is meshedly connected with a No. 2 bevel gear 1053, the bottom end of the transmission shaft 8 passes through the mounting body 101 and extends into the third mounting cavity 1012 and is fixedly connected with the No. 2 bevel gear 1053; the transmission shaft 8 located in the mounting body 101 is in a cross-shaped structure, and the transmission shaft 8 and the mounting body 101 are rotated in coordination; when the driving shaft 9 drives the No. 2 bevel gear 1053 to rotate through the transmission shaft 8, the No. 1 bevel gear 1051 rotates and drives the transmission rod 105 to rotate, so that the cam 1052 rotates. When the drive shaft 9 rotates forward, the end with a smaller diameter on the cam 1052 moves from bottom to top, pushing the top rod 1022 to move upward, so that the guide cover 102 moves upward; when the drive shaft 9 rotates reversely, the end with a smaller diameter on the cam 1052 moves from top to bottom, and the spring 104 contracts and resets to push the guide cover 102 and the top rod 1022 downward, moving the guide hole 1021 into the guide cavity 1011, isolating the guide cavity 1011 from the external environment of the mounting body 101.

[0033] When the guide cover 102 moves downward, the debris attached to the guide cover 102 will be scraped off by the mounting body 101 .

[0034] It should be noted that the vertical cross-section of the air guide cover 102 is an inverted T-shape, so that the air guide cover 102 will not be separated from the mounting body 101 .

[0035] It should be noted that a bracket 12 is fixedly connected to the lower surface of the tube body 1, through which the entire water quality monitoring device can be erected on the ground, and the sample bottle 11 can be located above the ground to facilitate the removal of the sample bottle 11 from the mounting body 101; it can also be bundled on the bracket 12 to reduce the influence from the flowing water body, so that the actual sampling depth of the four sampling bottles is closer to the expected sampling depth.

[0036] A lifting ring 13 is provided on the top of the installation box 2 to facilitate connection with the cable.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water quality monitoring device for river environment management, comprising a pipe body (1), characterized in that: A mounting box (2) is fixed at the top end of the tube body (1), a first mounting cavity (21) and a second mounting cavity (22) are formed in the mounting box (2), a motor (3) is mounted in the first mounting cavity (21), an output end of the motor (3) extends into the second mounting cavity (22) and is connected to an opening and closing mechanism (4) in a transmission manner, four guide frames (5) are evenly spaced and mounted on the inner wall of the tube body (1) along the circumferential direction, the guide frames (5) being long elliptical frames; the guide frames (5) are arranged to be inclined downward and toward the central axis of the tube body (1), and the distances from the bottom ends of the guide frames (5) to the bottom end surface of the tube body (1) are different and decrease in sequence; the four guide frames (5), a guide rod (6) is slidably mounted in each of the four guide rods (6), the guide rods (6) are vertically arranged, the four guide rods (6) are fixedly connected with a guide tube (7), the four guide tubes (7) are each provided with a transmission shaft (8), the four transmission shafts (8) are transmission-mounted with a drive shaft (9), the top ends of the four drive shafts (9) extend to the second mounting cavity (22) and are transmission-connected to the opening and closing mechanism (4), the bottom ends of the four guide tubes (7) are respectively connected with a bottling mechanism (10), the four transmission shafts (8) are transmission-connected to the four bottling mechanisms (10), and the four bottling mechanisms (10) are respectively installed with a sample bottle (11); The installation box (2) is provided with a guide groove (23) arranged along the radial direction of the tube body (1), the guide groove (23) connecting the inner cavity of the tube body (1) and the second installation cavity (22), four guide grooves (23) are provided, and the four guide grooves (23) are distributed in a ring array with the central axis of the tube body (1) as the center, and the four drive shafts (9) are respectively matched with the four guide grooves (23); The opening and closing mechanism (4) comprises a rotating shaft (41), a rotating disk (42) and a driving gear (43) fixedly sleeved on the rotating shaft (41); the output end of the motor (3) is drivingly connected to the rotating shaft (41); a driving groove (421) is provided on the rotating disk (42); one end of the driving groove (421) extends toward the middle of the rotating disk (42) and is connected to a secondary groove (422); the extending direction of the driving groove (421) is arranged at an angle with the radial direction of the rotating disk (42); the secondary groove (422) is an arc-shaped groove concentric with the rotating disk (42); the driving shaft (9) cooperates with the driving groove (421) and the secondary groove (422); The driving shaft (9) comprises a shaft rod (91), the top end of the shaft rod (91) passes through the guide groove (23) and is fixedly connected to a gear shaft (92), the shaft portion of the gear shaft (92) cooperates with the driving groove (421) and the auxiliary groove (422), the tooth portion of the gear shaft (92) abuts against the top surface of the rotating disk (42) and is drivingly connected to the driving gear (43); the bottom end of the shaft rod (91) is fixedly connected to a prism (93), the prism (93) penetrates into the driving shaft (8) along the axial direction of the driving shaft (8), and the prism (93) and the driving shaft (8) form a planar sliding fit.

2. A water quality monitoring device for river environment management according to claim 1, characterized in that: The bottling mechanism (10) comprises a mounting body (101), the mounting body (101) being fixed on the lower surface of the guide tube (7); the mounting body (101) is provided with a vertically arranged flow guiding cavity (1011) and a horizontally arranged third mounting cavity (1012), the flow guiding cavity (1011) being communicated with the third mounting cavity (1012), the flow guiding cavity (1011) passing through both ends of the mounting body (101), and the sample containing bottle (11) being threadedly connected to the lower wall surface of the flow guiding cavity (1011). The guide cavity (1011) is provided with a guide cover (102) on its upper part, a plurality of guide holes (1021) being provided on its upper part, a retaining ring (103) being provided below the guide cover (102), the retaining ring (103) being located at the connection point between the guide cavity (1011) and the third installation cavity (1012) and being threadedly connected to the cavity wall surface of the guide cavity (1011), and a spring (104) being fixedly connected between the retaining ring (103) and the guide cover (102).

3. A water quality monitoring device for river environment management according to claim 2, characterized in that: A transmission rod (105) is arranged in the third installation cavity (1012), the transmission rod (105) is located below the retaining ring (103), and both ends of the transmission rod (105) are embedded in and rotatably connected to the installation body (101), a first bevel gear (1051) and a cam (1052) are fixedly sleeved on the transmission rod (105), a top rod (1022) is fixedly connected to the top wall of the deflector cover (102), the lower end of the top rod (1022) passes through the inner side of the retaining ring (103) and is transmission-connected to the cam (1052); a second bevel gear (1053) is meshedly connected to the first bevel gear (1051), and the bottom end of the transmission shaft (8) passes through the installation body (101) and extends into the third installation cavity (1012) and is fixedly connected to the second bevel gear (1053).

4. A water quality monitoring device for river environment management according to claim 3, characterized in that: The vertical cross-sectional shape of the guide cover (102) is an inverted T-shape; the transmission shaft (8) located in the installation body (101) is in a cross-shaped structure, and the transmission shaft (8) is rotatably matched with the installation body (101).

5. A water quality monitoring device for river environment management according to claim 4, characterized in that: A bracket (12) is fixedly connected to the lower surface of the tube body (1), and a hanging ring (13) is provided on the top of the installation box (2).

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