CN211348179U

CN211348179U - High-precision water quality detection device

Info

Publication number: CN211348179U
Application number: CN201921606858.7U
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: 2020-08-25
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a high-precision water quality detection device, 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; this water quality testing device utilizes magnetic drive module drive magnetic impeller to rotate through increasing a magnetic impeller on the sensor to make the water that is close to the sensor can take place to flow, thereby take away the bubble that produces in mud and the aquatic of adhering to on the sensor surface, so not only can improve the precision that the sensor detected, can play clear effect moreover, improved detection device's life.

Description

High-precision water quality detection device

Technical Field

The utility model relates to a water quality testing equipment field, in particular to water quality testing device of high accuracy.

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 current water quality testing device is easily disturbed by mud, gas and leads to the degree of accuracy low, the utility model provides a water quality testing device that the precision is high.

In order to realize the purpose, the utility model provides a technical scheme is: the utility model provides a high accuracy water quality testing device, includes the sensor body, be connected with the water agitator on the sensor body, the water agitator includes the casing, install the magnetism impeller in the casing, be provided with the magnetic drive module on the central axis of magnetism impeller.

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.

Preferably, the magnetic impeller is an impeller made of tetrafluoro or other anticorrosive nonmagnetic substances, and the impeller is connected with a permanent magnet and fixed on an anticorrosive shaft.

On the basis of the technical scheme, the anti-corrosion shaft is connected to the shell.

The utility model discloses beneficial effect for prior art is: this water quality testing device utilizes magnetic drive module drive magnetic impeller to rotate through increasing a magnetic impeller on the sensor to make the water that is close to the sensor can take place to flow, thereby take away the bubble that produces in mud and the aquatic of adhering to on the sensor surface, so not only can improve the precision that the sensor detected, can play clear effect moreover, improved detection device's life.

Drawings

Fig. 1 is a front view of the present invention;

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

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a block diagram of a magnetic impeller;

FIG. 5 is a driving circuit diagram of the coil;

fig. 6 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. 1-3, a high precision water quality detection device, which comprises a sensor body 1, wherein 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, etc., the sensor body 1 is connected with a water body stirrer 2, the water body stirrer 2 comprises a housing 21, the housing 21 is fixed on the sensor body 1 through two U-shaped clamps 22, which can be disassembled if necessary, a magnetic impeller 23 is installed in the housing 21, the lower part of the housing 21 is arranged at a water outlet 211, as shown in fig. 4, the magnetic impeller 23 comprises an impeller 231, the impeller is made of tetrafluoro or other anticorrosive non-magnetic substances, a permanent magnet 232 is fixed on the impeller 231, the permanent magnet 232 and the anticorrosion shaft 233 are fixed on an anticorrosion shaft, and the anticorrosion shaft 233 is connected on.

In addition, install grid filter screen 24 on casing 21, in this embodiment, grid filter screen 24 is circular, and the circumference surface is equipped with the screw thread, has seted up circular shape mounting hole on casing 21, has also seted up the screw thread on the downthehole wall, and grid filter screen 24 is detachable like this and is connected with casing 21, the convenient change. 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 3 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 3 is installed below the sensor body 1, so that the arrangement can save space, and the volume of the whole device is small.

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. 5 and 6, the coils are connected to a half-bridge driving circuit, an input end of the half-bridge driving circuit is connected to a BP6308 chip, in this embodiment, there are a total of three driving coils, an included angle between the three driving coils is 120 °, and three groups of driving signals output by the BP6308 chip are controlled to have 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. 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 utilizes magnetic drive module drive magnetic impeller to rotate through increasing a magnetic impeller on the sensor to make the water that is close to the sensor can take place to flow, thereby take away the bubble that produces in mud and the aquatic of adhering to on the sensor surface, so not only can improve the precision that the sensor detected, can play clear effect moreover, improved detection device's life.

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 high accuracy water quality testing device, includes the sensor body, its characterized in that: the sensor is characterized in that a water body stirrer is connected onto the sensor body and comprises a shell, a magnetic impeller is installed in the shell, and a magnetic driving module is arranged on the central axis of the magnetic impeller.

2. The high-precision water quality detection device 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.

3. The high-precision water quality detection device according to claim 2, characterized in that: 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.

4. The high-precision water quality detection device according to claim 1 or 2, characterized in that: the magnetic driving module is installed below the sensor body.

5. The high-precision water quality detection device according to claim 1, characterized in that: and a grid filter screen is arranged on the shell.

6. The high-precision water quality detection device according to claim 5, characterized in that: the grid filter screen is detachably connected to the shell.

7. The high-precision water quality detection device according to claim 1, characterized in that: the magnetic impeller is an impeller made of tetrafluoro anticorrosive nonmagnetic substances, and the impeller is connected with a permanent magnet and fixed on an anticorrosive shaft.

8. The high-precision water quality detection device according to claim 7, characterized in that: the anticorrosion shaft is connected to the shell.