CN211528374U

CN211528374U - Water quality testing device with self-purification function

Info

Publication number: CN211528374U
Application number: CN201921606897.7U
Authority: CN
Inventors: 钟晓东; 张义
Original assignee: Suzhou Derry Finno Environment Science And Technology Co ltd
Current assignee: Suzhou Derry Finno Environment Science And Technology Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-09-18
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a water quality detection device with self-cleaning function, which comprises a sensor body, wherein a water body stirrer is connected on the sensor body, the water body stirrer comprises a shell, a magnetic impeller is arranged in the shell, and a magnetic drive module is arranged on the central axis of the magnetic impeller; a water outlet is arranged below the magnetic impeller, a water jetting pipe is connected to the water outlet, and a water spraying port of the water jetting pipe penetrates through the shell to be opposite to the detection port; this water quality testing device is through increasing a magnetism impeller on the sensor, utilize magnetic drive module drive magnetism impeller to rotate, drive rivers from the injection pipe directive detection mouth, this kind of rivers that last form the vortex behind the collision sensor, the cleaning power that the at uniform velocity rivers vortex brought lasts the friction sensor, bring the cleaning result that lasts, sensor permeate thing simultaneously, aquatic organism and suspended solid attachment are all driven away, the filth deposits, the bubble come-up, the water sample lasts the renewal.

Description

Water quality testing device with self-purification function

Technical Field

The utility model relates to a water quality testing equipment field, in particular to water quality testing device with self-cleaning function.

Background

At present, under the condition that the environmental protection requirement is increasingly strict, detection and monitoring requirements of various places on surface water such as rivers and lakes, ocean reservoirs, wetlands and the like, urban pipe networks and underground water are more and more, and because the environment for detection and monitoring is generally far away, or the position of installation equipment is not easy to maintain, even energy consumption required by instrument work is limited, such as buoys, fixed-point detection ships and the like. Sensors are installed at the bottom of similar devices, in urban pipe networks and groundwater detection requirements, sensors are installed at locations tens of meters deep.

Therefore, how to solve the problem that the sensor or the electrode in the deep underwater works in a good state and prolong the maintenance time is a problem which needs to be solved urgently, and the mechanism is simple and the energy consumption requirement is low.

1) At present, the main problems are that at the bottoms of water bodies such as a lake, a wetland, a reservoir, a river network and the like, water flow is relatively static and is not easy to flow, toxic and harmful bubbles generated in bottom sludge are adsorbed at the detection position of an underwater sensor in the upward floating process, and measurement is interfered;

2) in addition, the standing water is more easily attached by suspended sludge, and a scaling layer is formed by coating, so that the sensor is disabled.

3) Even if there is not mud bottom the water, for example clean pond bottom, in the laboratory vessel, the liquid of motionless is unfavorable for the electrochemical sensor of ion type equally like, hydrogen ion (PH), chloridion, the measurement of sensor such as potassium ion, because static water sample is unfavorable for the reference liquid ion diffusion that the sensor was appeared, causes the sample local concentration too high, is unfavorable for detecting the sample and updates.

At present, no other method is available for bubble accumulation in the water body except human intervention. The automatic brush bristles can be generally used and can work with low power consumption in the aspect of cleaning, but the brush bristles need to contact a measuring surface of a sensor in the work process and directly interfere with measured data, so that the brush bristles can only work at low frequency, and even the measurement needs to be interrupted, so that the phenomenon that the sensor records unreal data to influence the judgment of a user is avoided. In addition, because the bristles are idle for a long time and can attach suspended dirt, the sensor is easy to be cross-polluted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the existing water quality detection device is easily interfered by sludge and gas, the utility model provides a water quality detection device with a self-cleaning function.

In order to realize the purpose, the utility model provides a technical scheme is: a water quality detection device with a self-cleaning function comprises a sensor body, wherein a water body stirrer is connected to the sensor body, the water body stirrer comprises a shell, a magnetic impeller is installed in the shell, and a magnetic driving module is arranged on a central axis of the magnetic impeller; a water outlet is arranged below the magnetic impeller, a water jetting pipe is connected to the water outlet, and a water spraying opening of the water jetting pipe penetrates through the shell to be opposite to the detection opening.

In the above technical solution, preferably, the water injection pipe is connected with a swing clamp, and the swing clamp is connected with a swing motor.

On the basis of the above technical solution, preferably, the water jet nozzles of the water jet pipe are in a grid shape.

In the above technical solution, the magnetic driving module includes a coil, a central axis of the coil is on the same straight line with a central axis of the magnetic impeller, and the coil is connected with the control unit.

On the basis of the above technical solution, preferably, the control unit includes a chip with a model number of BP6308, an output end of the chip is connected to a driving circuit, and the driving circuit is connected to the coil.

In the above technical solution, the magnetic driving module is installed below the sensor body.

Furthermore, a grid filter screen is installed on the shell.

On the basis of the technical scheme, preferably, the grid filter screen is detachably connected to the shell.

In the above technical solution, preferably, the magnetic impeller is an impeller made of tetrafluoro or other anticorrosive nonmagnetic substance, and the impeller is connected with a permanent magnet and fixed on an anticorrosive shaft.

In the above technical scheme, the corrosion-resistant shaft is connected to the housing.

The utility model discloses beneficial effect for prior art is: this water quality testing device is through increasing a magnetism impeller on the sensor, utilize magnetic drive module drive magnetism impeller to rotate, drive rivers from the injection pipe directive detection mouth, this kind of rivers that last form the vortex behind the collision sensor, the cleaning power that the at uniform velocity rivers vortex brought lasts the friction sensor, bring the cleaning result that lasts, sensor permeate thing simultaneously, aquatic organism and suspended solid attachment are all driven away, the filth deposits, the bubble come-up, the water sample lasts the renewal. And because the power of washing comes from the water sample body of being surveyed, wash the sensor with the water sample body of awaiting measuring, so the sensor measurement need not to interrupt.

Drawings

FIG. 1 is an overall structure of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a side view of the present invention;

FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 1;

FIG. 5 is a block diagram of a magnetic impeller;

FIG. 6 is a block diagram of the water jet tube and the swing motor;

fig. 7 is a driving circuit diagram of the coil;

fig. 8 is a circuit diagram of a control unit of the coil.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, a water quality detecting device with self-cleaning function comprises a sensor body 1, a detecting port 11 is arranged below the sensor body, a detected water body enters the sensor through the detecting port to be detected, the sensor body 1 can be freely selected and replaced according to the requirements of users, such as a residual chlorine sensor, a pH sensor, a turbidity sensor, an ORP sensor and the like, a water body stirrer 2 is connected on the sensor body 1, the water body stirrer 2 comprises a shell 21, the shell 21 is fixed on the sensor body 1 through two U-shaped clamps 22 and can be detached if necessary, a magnetic impeller 23 is arranged in the shell 21, the lower part of the shell 21 is arranged at a water outlet 211, as shown in fig. 5, the magnetic impeller 23 comprises an impeller 231, the impeller is made of tetrafluoro or other antiseptic non-magnetic substances, a permanent magnet 232 is fixed on the impeller 231, the two are fixed on the corrosion-proof shaft 233, and the corrosion-proof shaft 233 is connected to the housing 21.

A water outlet is arranged below the magnetic impeller 23, a water injection pipe 3 is connected to the water outlet, a water spray opening 31 of the water injection pipe 3 penetrates through the shell 21 and faces the detection opening 11, in the embodiment, the water spray opening 31 of the water injection pipe 3 is in a grid shape, so that the pressure of sprayed water can be increased, and the flushing capacity is improved. The magnetic impeller 23 rotates to drive the water to flow, the water optimal water outlet enters the water jetting pipe 3 and is jetted to the detection port through the water jet 31, sludge attached to the detection port 11 can be washed away, and the detection accuracy is improved greatly due to the fact that the water flows all the time.

As shown in fig. 6, in order to improve the automatic cleaning ability of the water quality detecting device, a swing clamp 41 is connected to the water injection pipe 3, the swing clamp 41 is in a clamp shape and is clamped to the water injection pipe 3, the swing clamp 41 is connected to a swing motor 42, the swing motor 42 rotates to drive the swing clamp 41 to move left and right, and further the water injection pipe 3 is driven to swing in the horizontal direction, so that the water quality detecting device can impact the detection port in an all-dimensional manner, and the cleaning ability is greatly improved.

In addition, a grid filter screen 24 is installed on the casing 21, in this embodiment, the grid filter screen 24 is circular, a thread is arranged on the circumferential surface, a circular installation hole is formed in the casing 21, and a thread is also arranged on the inner wall of the hole, so that the grid filter screen 24 is detachably connected with the casing 21, and replacement is convenient. The barrier filter screen can block larger pollutants from being sucked into the device, such as corroded branches and water-driven object corpses; the size and the filtering effect of the barrier filter screen can be changed according to different detection requirements and fields.

In order to drive the magnetic impeller 23 to rotate, a magnetic driving module 5 is arranged on a straight line where the central axis of the magnetic impeller 23 is located, and in the embodiment, the magnetic driving module 5 is installed below the sensor body 1, so that the arrangement can save space, and the whole device is small in size.

The magnetic driving module comprises a coil, the central axis of the coil and the central axis of the magnetic impeller 23 are on the same straight line, the magnetic impeller 23 and the central axis of the coil are required to be on the same straight line to ensure that the driving force is uniform, and the magnetic driving module does not shake during rotation. As shown in fig. 7 and 8, the coils are connected with a half-bridge driving circuit, an input end of the half-bridge driving circuit is connected with a BP6308 chip, in this embodiment, there are a total of three driving coils, an included angle between the three driving coils is 120 °, the BP6308 chip controls three groups of driving signals output with a phase difference of 120 degrees, so that the driving coils generate a rotating magnetic field, a DIR pin of the BP6308 chip controls a direction of the rotating magnetic field, the direction of the rotating magnetic field can be changed to realize forward rotation or reverse rotation of the magnetic impeller 23, a PWM pin of the BP6308 chip controls a frequency of the rotating magnetic field, and the rotating speed of the magnetic coil is adjusted by changing the frequency of the rotating magnetic.

And the magnetic driving module drives the magnetic impeller in opposite directions as required, and the pollutants adsorbed on the barrier filter screen are flushed away by utilizing the reaction force of water flow. The rotation direction of the magnetic impeller is controlled by the magnetic direction driving module, and the rotation speed is also controlled. The rotational speed is adjusted according to the quality of water condition of difference, and different quality of water density are different, and the rotational speed adjustment can prevent too high impeller rotational speed from to water sample formation pressure, forms the pressure differential of overrange when the water sample inhales and jets out the device body, and too big pressure differential and velocity of flow can make the fluid compressed, probably produce the bubble during pressure release. The rotational speed can be adjusted by practical conditions.

The magnetic impeller is driven to rotate by the magnetic coil, so that the magnetic impeller can be driven by very small energy, and self-cleaning is formed by the direction-changing driving of the driving module, so that long-time work with low energy consumption is ensured. This drive system is also non-contact, and therefore can work in corrosive liquids without any problem.

This water quality testing device is through increasing a magnetism impeller on the sensor, utilize magnetic drive module drive magnetism impeller to rotate, drive rivers from the injection pipe directive detection mouth, this kind of rivers that last form the vortex behind the collision sensor, the cleaning power that the at uniform velocity rivers vortex brought lasts the friction sensor, bring the cleaning result that lasts, sensor permeate thing simultaneously, aquatic organism and suspended solid attachment are all driven away, the filth deposits, the bubble come-up, the water sample lasts the renewal. And because the power of washing comes from the water sample body of being surveyed, wash the sensor with the water sample body of awaiting measuring, so the sensor measurement need not to interrupt.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a water quality testing device with self-purification function, includes the sensor body, the bottom of sensor body is equipped with detects mouth, its characterized in that: the sensor body is connected with a water body stirrer, the water body stirrer comprises a shell, a magnetic impeller is arranged in the shell, and a magnetic driving module is arranged on the central axis of the magnetic impeller; a water outlet is arranged below the magnetic impeller, a water jetting pipe is connected to the water outlet, and a water spraying opening of the water jetting pipe penetrates through the shell to be opposite to the detection opening.

2. The water quality detecting apparatus according to claim 1, characterized in that: the water jet pipe is connected with a swing clamp, and the swing clamp is connected with a swing motor.

3. The water quality detecting apparatus according to claim 1, characterized in that: the water jet of the water jet pipe is in a grid shape.

4. The water quality detecting apparatus having a self-cleaning function according to claim 1, characterized in that: the magnetic driving module comprises a coil, the central axis of the coil and the central axis of the magnetic impeller are on the same straight line, and the coil is connected with a control unit.

5. The water quality detecting apparatus according to claim 4, wherein: the control unit comprises a chip with the model number of BP6308, the output end of the chip is connected with a driving circuit, and the driving circuit is connected with the coil.

6. The water quality detecting apparatus according to claim 1, characterized in that: the magnetic driving module is installed at the lower part of the sensor body.

7. The water quality detecting apparatus according to claim 1, characterized in that: and a grid filter screen is arranged on the shell.

8. The water quality detecting apparatus according to claim 7, wherein: the grid filter screen is detachably connected to the shell.

9. The water quality detecting apparatus according to claim 1, characterized in that: the magnetic impeller is made of tetrafluoro or anticorrosive nonmagnetic substances, and the impeller is connected with a permanent magnet and fixed on an anticorrosive shaft.

10. The water quality detecting apparatus according to claim 9, wherein: the anticorrosion shaft is connected to the shell.