CN111982586A

CN111982586A - River mouth area quality of water fixed point observation device

Info

Publication number: CN111982586A
Application number: CN202010641420.3A
Authority: CN
Inventors: 蒋日进; 陈坚; 陈�峰; 张亚洲; 芮银
Original assignee: Zhejiang Marine Fisheries Research Institute
Current assignee: Zhejiang Marine Fisheries Research Institute
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-11-24
Anticipated expiration: 2040-07-06
Also published as: CN111982586B

Abstract

The invention discloses a fixed-point observation device for water quality in estuary areas, which comprises: float the body, set up in float on the body get the water tank and set up in get the header tank on the water tank, get the water tank and be the hollow circular cylinder of open form by one end and inject, wherein, get and be provided with the axle sleeve that can the rotation on the tip of open form of water tank, be provided with the first blade of a plurality of on the inner wall of axle sleeve, be provided with a plurality of second blade on the outer wall of axle sleeve, under the condition that first blade receives the river impact of flow and drives the axle sleeve rotation, the second blade can rotate in step in order to produce and inhale the river adsorption affinity in the water tank, the extending direction and the gravity opposite direction of adsorption affinity. After the river that has mixed silt got into gets the water tank, silt can be based on the rotation of getting the water tank and the centrifugal force that produces, and then makes silt and the inner wall of getting the water tank support and lean on the contact to can reduce the volume of getting the silt in the water tank, finally reach the purpose that improves detection accuracy.

Description

River mouth area quality of water fixed point observation device

Technical Field

The invention belongs to the field of water quality detection, and particularly relates to a fixed-point water quality observation device in a estuary area.

Background

With the rapid development of modern economy and industry, the pollution to the environment is more and more severe, especially the pollution to air and water resources directly affects the living environment and the health of human beings. Environmental protection is increasingly gaining attention from the nation and people, and environmental protection is simultaneously performed from many aspects such as prevention and treatment. The premise for pollution control of water resources is to perform accurate sampling detection.

The prior art discloses a water quality fixed-point detection device such as publication number CN110389206A, which comprises a water quality fixed-point detection device, a water quality sensor group, a caisson, a vertical pipeline and a circulating pipeline, wherein the vertical pipeline is connected to the circulating pipeline, and the water quality sensor group is connected to the vertical pipeline; the circulating pipeline is connected with a degassing device, and the degassing device is positioned at the output end of the vertical pipeline; the improved water-saving submersible pump is characterized in that a cavity is formed in the caisson, a water inlet is formed in the middle of the bottom surface of the cavity, a water suction pump is mounted at the input end of the water inlet, a water outlet is formed in one side of the water inlet, an electromagnetic valve is mounted at the output end of the water outlet, an air inlet is formed in the top of the cavity, and an air compressor is connected to the air inlet through a pipeline. The invention adopts the caisson to position the whole equipment, has stable structure and strong environmental adaptability, and can continuously work even in water areas with non-smooth water flow.

Disclosure of Invention

The invention aims to provide a river mouth area water quality fixed-point observation device which is energy-saving, can effectively separate silt, can improve the uniformity of river water and can carry out self-cleaning.

The technical scheme adopted by the invention for realizing the purpose is as follows: a fixed-point observation device for water quality in estuary areas comprises: float the body, set up the water intaking case on floating the body and set up the header tank on the water intaking case, the water intaking case is the hollow circular cylinder of open form by one end and prescribes a limit to, wherein, be provided with the axle sleeve that can the rotation on the tip that is open form of water intaking case, be provided with the first blade of a plurality of on the inner wall of axle sleeve, be provided with a plurality of second blade on the outer wall of axle sleeve, under the condition that first blade receives the river impact of flowing and drives the axle sleeve rotation, the second blade can rotate in step in order to produce the adsorption affinity that inhales the water intaking case with the river, the extending direction and the gravity opposite direction of adsorption affinity. Can utilize the kinetic energy of rivers in order to realize the rotation of first blade through the second blade, the rotation of first blade can be with in the river suction water intaking case to accomplish the sample of river, whole process need not electric drive, and then can reduce the energy consumption.

Get the water tank and rotate according to the mode that can rotate around its self axis and be connected to floating the body, get and be provided with a plurality of third blade on the outer wall of water tank, get the water tank and can rotate around its self axis under the circumstances that the rivers that flow impacted the third blade. After the river that has mixed silt got into gets the water tank, silt can be based on the rotation of getting the water tank and the centrifugal force that produces, and then makes silt and the inner wall of getting the water tank support and lean on the contact to can reduce the volume of getting the silt in the water tank, finally reach the purpose that improves detection accuracy.

On the direction of gravity, the internal diameter of getting the water tank is the trend of crescent, wherein, is provided with first baffle and second baffle in the water tank in order to be separated the inner chamber of getting the water tank for first cavity, second cavity and third cavity, is provided with first through-hole on the first baffle so that first cavity and second cavity can communicate each other, is provided with the second through-hole on the second baffle so that second cavity and third cavity intercommunication. The inner diameter of the water taking tank is gradually increased, so that centrifugal force generated by silt can be decomposed into first component force perpendicular to the inner wall of the water taking tank and second component force inclining downwards along the water taking tank, the resistance of upward movement of the silt is increased by the first component force and the second component force, and the amount of the silt entering the first cavity can be further reduced.

The diameter of the second through hole can be smaller than the minimum inner diameter of the third cavity, so that river water entering the third cavity can form a vortex to improve the mixing uniformity. River water is discharged from the third cavity through the second through hole to enter the second cavity, the diameter of the second through hole is smaller than the minimum diameter of the third cavity, the discharge amount of the river water can be reduced, and then a vortex can be formed in the third cavity to improve the mixing uniformity of the river water.

The second cavity is internally provided with a cleaning part which can slide along the inner wall of the second cavity, wherein under the condition that the water taking tank rotates, the cleaning part can slide along the inner wall of the second cavity based on the centrifugal force of the cleaning part. The cleaning part at least comprises a gravity ball, an elastic rope and a cleaning body, at least one sliding groove is formed in the inner wall of the water taking tank, the gravity ball slides and is arranged in the sliding groove, one end of the elastic rope is connected to the sliding groove, the other end of the elastic rope is connected to the gravity ball, and when the water collecting tank rotates to enable centrifugal force generated by the gravity ball to be larger than elastic acting force of the elastic rope, the gravity ball slides along the sliding groove in a mode towards the third cavity. In case that the rotation speed of the water collecting tank is reduced so that the centrifugal force generated by the gravity ball is smaller than the elastic force of the elastic string, the gravity ball will slide along the sliding groove in a manner of facing the first chamber. The cleaning body is connected to the gravity ball to divide the second chamber into a first space and a second space, and a third through hole is provided on the cleaning body to communicate the first space and the second space with each other. Can scrape the inner wall of second cavity through cleaning the body, and then one can clean the inner wall of second cavity, and the two can promote accumulational silt down on the inner wall of second cavity to make silt finally can be discharged by arranging the sand hole. In the process, electric energy is not needed for driving, and the purpose of reducing energy consumption can be achieved.

The areas of the adjacent two second blades are different from each other, so that impact force applied by the river water to the adjacent two second blades is different from each other, wherein the rotation speed of the intake box can be changed based on the difference of the impact force. The cleaning body has elasticity, so that under the condition that the gravity ball drives the cleaning body to move towards the third cavity, the outer diameter of the cleaning body and the diameter of the third through hole can be increased. Through the mode, the rotation speed of the water taking tank can be in a changing state, further, the centrifugal force generated by the gravity ball is in a changing state, and finally, the gravity ball moves up and down along the sliding groove, so that the cleaning body is driven to move up and down to clean the inner wall of the second cavity. In addition, when the cleaning body moves downward, the inner diameter of the cleaning body will be increased synchronously, at this time, the volume of the first space enclosed by the second baffle, the water collecting tank and the cleaning body will be gradually reduced, at this time, since the cleaning body extrudes the river water of the first space and the diameter of the third through hole is increased, the river water in the first space will be discharged into the second space enclosed by the first baffle, the water collecting tank and the cleaning body at an accelerated speed. When the cleaning body moves upward, the inner diameter of the cleaning body will decrease. At the same time, the volume of the second space will be reduced and the volume of the first space will be increased, at which time the second space will generate an adsorption force to accelerate the river water in the third chamber into the first space and will accelerate the river water in the second space to be discharged into the first chamber due to the squeezing of the cleaning body against the second space. And then the detection efficiency can be improved. Simultaneously, in the process that the cleaning body moves downwards, the stirring effect on the river water can be realized, so that the detection accuracy can be improved due to the uniformity of the river water.

The invention adopts the third blade and the cleaning part, thereby having the following beneficial effects: 1. after the river that has mixed silt got into gets the water tank, silt can be based on the rotation of getting the water tank and the centrifugal force that produces, and then makes silt and the inner wall of getting the water tank support and lean on the contact to can reduce the volume of getting the silt in the water tank, finally reach the purpose that improves detection accuracy. 2. The inner diameter of the water taking tank is gradually increased, so that centrifugal force generated by silt can be decomposed into first component force perpendicular to the inner wall of the water taking tank and second component force inclining downwards along the water taking tank, the resistance of upward movement of the silt is increased by the first component force and the second component force, and the amount of the silt entering the first cavity can be further reduced. 3. River water is discharged from the third cavity through the second through hole to enter the second cavity, the diameter of the second through hole is smaller than the minimum diameter of the third cavity, the discharge amount of the river water can be reduced, and then a vortex can be formed in the third cavity to improve the mixing uniformity of the river water. In the process that the cleaning body moves downwards, the river water can be stirred, so that the uniformity of the river water can be improved, and the detection accuracy is improved. 4. Can scrape the inner wall of second cavity through cleaning the body, and then one can clean the inner wall of second cavity, and the two can promote accumulational silt down on the inner wall of second cavity to make silt finally can be discharged by arranging the sand hole. In the process, electric energy is not needed for driving, and the purpose of reducing energy consumption can be achieved. Therefore, the invention is an energy-saving river mouth area water quality fixed-point observation device which can effectively separate silt, improve river water uniformity and carry out self-cleaning.

Drawings

FIG. 1 is a schematic structural diagram of a fixed-point water quality observation device in a estuary region;

FIG. 2 is a schematic view of an arrangement of a gravity ball and a cleaning body;

fig. 3 is a schematic view of the arrangement of the first blade and the second blade.

Reference numerals: the water collecting device comprises a floating body 1, a water taking tank 2, a water collecting tank 3, a water inlet channel 4, a drainage channel 5, a shaft sleeve 6, a first blade 7, a second blade 8, a third blade 9, a first baffle plate 10, a second baffle plate 11, a first cavity 12, a second cavity 13, a third cavity 14, a first through hole 15, a second through hole 16, a sand discharging hole 17, a cleaning part 18, a gravity ball 18a, an elastic rope 18b, a cleaning body 18c, a sliding groove 19, a first space 20, a second space 21 and a third through hole 22.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:

example 1:

as shown in fig. 1 to 3, the fixed-point observation device for water quality in the estuary region at least includes a floating body 1, a water intake tank 2 and a water collection tank 3. The water intake box 2 may have a hollow cylindrical shape. The water intake box 2 is provided on the floating body 1 in such a manner as to be rotatable about its own central axis. For example, the floating body 1 is provided with a fixing hole, a rolling bearing is arranged in the fixing hole, the water taking tank 2 is provided with an installation shaft, and then when the installation shaft is nested in the rolling bearing, the water taking tank 2 can rotate around the central axis of the water taking tank. Get water tank 2 and set up in the downside of floating body 1 for when floating body 1 floats on the surface of water, get water tank 2 and can be located the surface of water below. The water collection tank 3 is arranged on the water taking tank 2. The water taking tank 2 is provided with a water inlet passage 4 and a water drainage passage 5. The water collecting tank 3 is communicated with the water taking tank 2 through a drainage channel 5. River water enters the water taking tank 2 through the water inlet channel 4 and enters the water collecting tank 3 through the water drainage channel 5. The water collecting tank 3 can be provided with sensors for detecting water quality parameters such as oxygen content, nitrogen content, pH value, conductivity, turbidity and the like, and then the monitoring of water quality can be realized. It will be appreciated that anchors, connecting lines, etc. may be provided to achieve the fixation of the floating body. For example, it is sufficient to place anchors at the bottom of a river (similar to prior art boat anchors).

The lower end of the water withdrawal tank 2 may be open to define a water inlet passage 4. The drain passage 5 can be provided at an upper end portion of the water fetching tank 2. And the flow direction of the river water in the intake box 2 can be opposite to the gravity direction. A rotatable shaft sleeve 6 is nested on the lower end of the water taking tank 2. The shaft sleeve 6 can rotate relative to the water taking tank 2. Specifically, a plurality of first blades 7 are arranged on the outer side of the shaft sleeve 6. When the water taking tank 2 is placed in flowing river water, the flowing river water can flush the first blade 7 so that the first blade 7 rotates around the central axis of the water taking tank 2, and then the shaft sleeve 6 rotates synchronously. It can be understood that, in order to realize the selection of the shaft sleeve 6, the water intake box 2 may be provided with a part of a cover for covering a part of the first blades 7, that is, the covered part of the first blades 7 is not impacted by the river water, so that the shaft sleeve C can rotate based on the moment generated by the part of the first blades 7, and the inner side of the shaft sleeve 6 is provided with a plurality of second blades 8. The second blades 8 are arranged at intervals along the circumference of the boss 6 (which may be similar to blades of a prior art electric fan). It can drive second blade 8 in step and rotate when axle sleeve 6 is rotatory, and at this moment, second blade 8 will produce the adsorption affinity in order to get the river water suction of the 2 lower extreme outsides of water tank 2 and get water tank 2 in, and then realize getting water tank 2's independently water intaking, at above-mentioned water intaking in-process, need not set up extra suction pump, and then can reduce the energy consumption

A plurality of third blades 9 are arranged on the outer wall of the water taking tank 2. The third blade 9 can strike the third blade 9 along the rivers that the circumference interval arrangement of getting water tank 2 flowed, and then makes the third blade 9 can drive and get water tank 7 synchronous rotation and can understand, in order to realize getting the rotation of water tank 2. The water intake box 2 may be provided with a cover for covering a part of the third blade 9. The inside diameter of the water take-up tank 2 can be gradually increased in the direction along the gravity. A first baffle 10 and a second baffle 11 are sequentially arranged in the water taking tank 2 along the gravity direction. The inner cavity of the water taking tank 7 can be divided into a first cavity 12, a second cavity 13 and a third cavity 14 by the first baffle 10 and the second baffle 11. The third chamber 14 is in communication with the inlet channel 4 so that river water can first enter the third chamber 14. The first baffle 10 is provided with a first through hole 15. The second baffle 11 is provided with a second through hole 16. The first cavity 12 communicates with the second cavity 13 through a first through hole 15. The second cavity 13 and the third cavity 14 communicate through a second through hole 16. The drainage channel 5 is communicated with the first cavity 12, and then river water can enter the water collecting tank 3 through the water inlet channel 4, the third cavity 14, the second cavity 13, the first cavity 12 and the drainage channel 4 in sequence. The second blade 8 is disposed in the third cavity 14. The inner diameter of the third cavity 14 gradually increases in the direction of gravity. When the second blade 8 sucks the river water into the third cavity 14, the river water may flow in a direction opposite to the gravity (i.e., a vertically upward direction as in fig. 1), since the inner diameter of the third cavity 14 is gradually increased, and then when the river water flows to the second through hole 16, the flow rate is abruptly reduced by the reduction of the cross section of the second through hole 16, so that a vortex may be formed in the third cavity 14. In the prior art, water quality unevenness is one of important factors influencing detection results. This application can carry out the intensive mixing to river through the vortex that forms in the third cavity 14 in order to improve its degree of consistency, and then reach the purpose that improves the testing result precision.

The water taking tank 2 can be in a rotating state through the driving of the third blade 9. When river water enters the second cavity 13 through the second through hole 16, the centrifugal force generated by the rotation of the water taking tank 2 can realize the separation of the river water and silt. The density of silt is greater than water, and then the centrifugal force that it received is great, and it can follow the radial displacement of second cavity 13, until leaning on the inner wall that contacts to second cavity 13. At the same time, the centrifugal force generated by the silt will be decomposed on the inner wall of the second cavity 13 into a first component force perpendicular to the inner wall of the second cavity 13 and a second component force along the extending direction of the second cavity 13. The first component will increase the friction between the silt and the inner wall of the third cavity 13, and further increase the difficulty of the silt moving upwards along the inner wall of the second cavity 13. At the same time, the second component will force the silt to move downwards along the inner wall of the second cavity 13, and further the upward movement of the silt can be limited. Ultimately greatly reducing the amount of silt entering the first chamber 12. The water taking tank 2 is also provided with a plurality of sand discharge holes 17. The sand discharge hole 17 communicates with the second chamber 13. The inner diameter of the second through hole 16 can be much smaller than the smallest inner diameter of the second cavity 13 so that the silt abutting against the inner wall of the second cavity 13 can move downward based on the centrifugal force and the effect of its own gravity and finally be discharged by the sand discharge hole 17.

A cleaning portion 18 is also provided in the second chamber 13. When the water taking tank 2 rotates, the cleaning part 18 can generate centrifugal force, and the cleaning part 18 can slide along the inner wall of the second cavity 13 based on the centrifugal force to clean the inner wall of the second cavity 13. Specifically, the cleaning portion 18 includes at least a gravity ball 18a, an elastic cord 18b, and a cleaning body 18 c. The inner wall of the second chamber 13 is provided with a sliding groove 19. The gravity ball 18a is nested in the slide groove 19, and the gravity ball 18a can slide along the extending direction of the slide groove 19. One end of the elastic cord 18b is connected to the sliding groove 19. The other end of the elastic cord 18b is connected to the gravity ball 18 a. When the water fetching tank 2 is rotated, the gravity ball 18a can move downward along the slide groove 19 based on its own centrifugal force. Movement of the gravity ball 18a will stretch the elastic cord 18b so that the elastic cord 18b stores elastic potential energy. When the water withdrawal tank 2 stops rotating or the rotation speed thereof decreases, the gravity ball 18a will move upward along the slide groove 19 by the elastic potential energy of the elastic cord 18 b. The cleaning body 18c is connected to the gravity ball 18a, and then when the gravity ball 18a moves, the cleaning body 18c can be driven to move synchronously, and finally the cleaning body 18c can scrape the inner wall of the second cavity 13.

The areas of the adjacent two second blades 8 are different from each other so that the impact force of the river water applied to the adjacent two second blades 8 is different from each other, wherein the rotation speed of the water fetching tank 2 can be changed based on the difference of the impact force. For example, in the circumferential direction of the intake box 2, the area of the second blade 8 increases first and then decreases. As the area of the second blade 8 impacted by the river water gradually increases, the gravity ball 18a can communicate toward the third chamber 14. The gravity ball 18a can communicate toward the first chamber 12 as the area of the second blade 8, which the river water impacts, is gradually reduced.

The shape of the cleaning body 18b can be defined by a circular ring shape. That is, the cleaning body 18b is provided with the third through hole 22. The cleaning body 18c may be made of silicone or rubber having elasticity. During the downward movement of the gravity ball 18a, both the outer diameter and the inner diameter of the cleaning body 18b increase. Or during the upward movement of the gravity ball 18a, the cleaning body 18b will have its inner and outer diameters reduced based on its own elasticity. When the cleaning body 18b moves downward, the inner diameter of the cleaning body 18b will increase synchronously, at which time the volume of the first space 20 enclosed by the second baffle plate 11, the water collection tank 3 and the cleaning body 18c will gradually decrease, at which time the river water in the first space 20 will be discharged into the second space 21 enclosed by the first baffle plate 10, the water collection tank 3 and the cleaning body 18c at an accelerated speed. When the cleaning body 18b moves upward, the inner diameter of the cleaning body 18b will decrease. At the same time, the volume of the second space 21 will decrease, and the volume of the first space 20 will increase, so that the river water in the third cavity 14 is accelerated to enter the first space 20, and the river water in the second space 21 is accelerated to be discharged into the first cavity 12.

Claims

1. A fixed-point observation device for water quality in estuary areas comprises: float body (1), set up in get water tank (2) on floating body (1) and set up in get water tank (3) on water tank (2), characterized by: get water tank (2) and be the hollow cylinder of open form by one end and prescribe a limit to, wherein, get water tank (2) be provided with axle sleeve (6) that can the rotation on the tip of open form, be provided with a plurality of first blade (7) on the inner wall of axle sleeve (6), be provided with a plurality of second blade (8) on the outer wall of axle sleeve (6), under the condition that first blade (7) are strikeed and drive axle sleeve (6) rotation by the river that flows, second blade (8) can rotate in step so as to produce and inhale the river the adsorption affinity in water tank (2), the extending direction and the gravity direction of adsorption affinity are opposite.

2. The estuary area water quality fixed-point observation device according to claim 1, wherein: get water tank (2) and rotate according to the mode that can rotate around its self axis and be connected to float body (1), get and be provided with a plurality of third blade (9) on the outer wall of water tank (2), it is right to flow river under the condition that third blade (9) are strikeed, it can rotate around its self axis to get water tank (2).

3. The estuary area water quality fixed-point observation device according to claim 2, wherein: on the direction of gravity, the internal diameter of getting water tank (2) is the trend of crescent, wherein, it is provided with first baffle (10) and second baffle (11) in order to be separated the inner chamber of getting water tank (2) for first cavity (12), second cavity (13) and third cavity (14) to get water tank (2), be provided with first through-hole (15) on first baffle (10) so that first cavity (12) with second cavity (13) can communicate each other, be provided with second through-hole (16) on second baffle (11) so that second cavity (13) with third cavity (14) intercommunication.

4. The estuary area water quality fixed-point observation device according to claim 3, wherein: the diameter of the second through hole (16) can be smaller than the minimum inner diameter of the third cavity (14), so that river water entering the third cavity (14) can form a vortex to improve mixing uniformity.

5. The estuary area water quality fixed-point observation device according to claim 4, wherein: the second cavity (13) is internally provided with a cleaning part (18) capable of sliding along the inner wall of the second cavity (13), wherein the cleaning part (18) can slide along the inner wall of the second cavity (13) based on the centrifugal force of the cleaning part under the condition that the water taking tank (2) rotates.

6. The estuary area water quality fixed-point observation device according to claim 5, wherein: the areas of the two adjacent second blades (8) are different from each other, so that the impact force exerted by the river water on the two adjacent second blades (8) is different from each other, wherein the rotation speed of the water taking tank (2) can be changed based on the difference of the impact force.

7. The estuary area water quality fixed-point observation device according to claim 6, wherein: the cleaning part (18) at least comprises a gravity ball (18a), an elastic rope (18b) and a cleaning body (18c), at least one sliding groove (19) is formed in the inner wall of the water taking tank (2), the gravity ball (18a) is arranged in the sliding groove (19) in a sliding mode, one end of the elastic rope (18b) is connected to the sliding groove (19), the other end of the elastic rope (18b) is connected to the gravity ball (18a), and when the water taking tank (2) rotates to enable centrifugal force generated by the gravity ball (18a) to be larger than elastic acting force of the elastic rope (18b), the gravity ball (18a) slides along the sliding groove (19) in a mode of facing the third cavity (14).

8. The estuary area water quality fixed-point observation device according to claim 7, wherein: in the case where the spin speed of the water collection tank (2) is reduced so that the centrifugal force generated by the gravity ball (18a) is smaller than the elastic force of the elastic cord (18b), the gravity ball (18a) slides along the slide groove (19) toward the first chamber (12).

9. The estuary area water quality fixed-point observation device according to claim 8, wherein: the cleaning body (18c) is connected to the gravity ball (18a) to divide the second cavity (13) into a first space (20) and a second space (21), and a third through hole (22) is provided on the cleaning body (18c) to communicate the first space (20) and the second space (21) with each other.

10. The estuary area water quality fixed-point observation device according to claim 9, wherein: the cleaning body (18c) has elasticity, so that the outer diameter of the cleaning body (18c) and the diameter of the third through hole (22) can be increased under the condition that the gravity ball (18a) drives the cleaning body (18c) to move towards the third cavity (14).