Constant-current self-cleaning water quality monitoring device

Abstract

The utility model discloses a constant-current self-cleaning water quality monitoring device which comprises a water inlet, a water outlet, a multi-parameter sensor, a constant-current water supply component, an automatic cleaning component, a water pressure sensor and a control host, the control host comprises a logic controller and an operation module; the logic controller is used for controlling the operation of the monitoring device; the operation module is used for analyzing and calculating data measured by the multi-parameter sensor; the constant-flow water supply assembly comprises a valve, a water pump and a flow meter; the automatic cleaning device comprises a flow cell and a grinding cleaning ball; the flow cell comprises a water feeding end and a water draining end; a to-be-detected water sample passes through the water inlet, the valve, the water pump and the flowmeter, enters the flow cell from the water feeding end, and is discharged from the water outlet through the water discharging end; a jet plate is arranged at the water feeding end; the water pressure sensor is arranged at the water inlet; the water pump is fed back and adjusted through the flowmeter to realize constant-flow water supply; water flow impacts and drives the grinding cleaning balls to achieve automatic cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring equipment, in particular to a constant-current self-cleaning water quality monitoring device. Background Art

[0002] At present, society has higher and higher requirements for water quality, which means that the requirements for water quality monitoring equipment are also getting higher and higher. At present, the main technical principles of online water quality detectors include chemical titration, electrochemical measurement, spectrophotometry, etc. In the monitoring operation of online equipment, especially some parameters in electrochemical measurement, the flow rate of the liquid flowing through the sensor is required to be high. The more stable the flow rate, the more stable and accurate the monitoring data.

[0003] At the same time, the lack of water in the equipment will cause certain interference to the sensor or even damage the sensor; the sensor and container are prone to scale accumulation and microbial growth when in contact with the water sample to be tested for a long time. If not cleaned in time, the test results will be affected. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the current multi-parameter water quality monitoring instruments, the utility model provides a constant-current self-cleaning water quality monitoring device, which can achieve the effects of automatic constant current and automatic cleaning.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] A constant-current self-cleaning water quality monitoring device comprises a water inlet, a water outlet, a multi-parameter sensor, a constant-current water supply component, an automatic cleaning component, a water pressure sensor and a control host; the control host comprises a logic controller and an operation module; the logic controller is used to control the operation of the monitoring device; the operation module is used to analyze and calculate the data measured by the multi-parameter sensor; the constant-current water supply component comprises a valve, a water pump and a flow meter; the automatic cleaning component comprises a circulation pool and a grinding cleaning ball; the circulation pool comprises a water supply end and a water discharge end; the water sample to be tested enters the circulation pool from the water supply end through the water inlet, the valve, the water pump and the flow meter, and is then discharged from the water outlet through the water discharge end; the water supply end is provided with a jet plate; the water pressure sensor is arranged at the water inlet.

[0007] According to one aspect of the utility model, one or more jet holes are arranged on the jet plate.

[0008] According to one aspect of the utility model, the diameter of the jet hole is smaller than the diameter of the grinding and cleaning ball.

[0009] According to one aspect of the utility model, the water supply end is arranged directly below the circulation pool.

[0010] According to one aspect of the utility model, the position of the water discharge end is higher than the position of the water supply end.

[0011] In practical applications, the valve is an electrically controlled valve; the water pump is a variable frequency pump.

[0012] Valves, water pumps, flow meters and water pressure sensors are connected to the logic controller.

[0013] Advantages of the utility model:

[0014] A water pump and a flow meter are set between the test water sample and the circulation pool. The controller adjusts the water pump according to the flow rate and flow data of the water flow monitored by the flow meter, so that the water pump can achieve automatic constant flow and meet the flow rate requirements of the sensing instrument for the water flow; a single-hole or multi-hole jet plate can be selected according to the diameter of the water inlet pipe of the circulation pool and the flow demand;

[0015] The circulation pool is equipped with grinding cleaning balls, which can collide with the sensor under the drive of constant water flow, thus playing the role of automatic cleaning;

[0016] A water pressure sensor is provided at the water inlet to determine whether the water supply is cut off. When there is a water shortage or water outage, measures such as automatic power-off to end detection can be implemented to protect the sensor instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural schematic diagram of a constant-current self-cleaning water quality monitoring device described in the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the flow cell described in the embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the jet plate described in the embodiment of the utility model.

[0021] Legend: 1. Water inlet; 2. Water outlet; 3. Multi-parameter sensor; 41. Valve; 42. Water pump; 43. Flow meter; 51. Circulation pool; 511. Water supply end; 512. Water discharge end; 513. Jet plate; 514. Jet hole; 52. Grinding cleaning ball; 6. Water pressure sensor; 71. Logic controller; 72. Operation module. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, a constant-current self-cleaning water quality monitoring device comprises a water inlet 1, a water outlet 2, a multi-parameter sensor 3, a constant-current water supply component, an automatic cleaning component, a water pressure sensor 6 and a control host; the control host comprises a logic controller 71 and an operation module 72; the logic controller 71 is used to control the operation of the monitoring device; the operation module 72 is used to analyze and calculate the data measured by the multi-parameter sensor 3; the constant-current water supply component comprises a valve 41, a water pump 42 and a flow meter 43; the automatic cleaning component comprises a circulation pool 51 and a grinding cleaning ball 52; the circulation pool 51 comprises a water supply end 511 and a water discharge end 512; the water sample to be detected enters the circulation pool 51 through the water supply end 511 through the water inlet 1, the valve 41, the water pump 42 and the flow meter 43, and then is discharged from the water outlet 2 through the water discharge end 512; the water supply end 511 is provided with a jet plate 513; the water pressure sensor 6 is arranged at the water inlet 1;

[0024] The constant flow water supply component is used to provide a water sample to be tested with a stable flow rate. The principle is that the water sample to be tested flows into the circulation pool 51 in a stable constant flow state after being pressurized by the water pump 42. The flow meter 43 is arranged between the water pump 42 and the circulation pool 51 to detect the change of the flow rate in real time. The logic controller 71 adjusts the speed of the water pump 42 in a negative feedback regulation manner according to the detection value of the flow meter 43, so that the flow rate output by the water pump 42 is maintained at the set value, providing a constant water flow for the circulation pool 51.

[0025] The water flow output by the water pump 42 enters the circulation pool 51, and the grinding and cleaning balls 52 move irregularly under the drive of the water flow, and collide and rub with the multi-parameter sensor 3, thereby cleaning the inner wall of the circulation pool 51 and the sensor surface.

[0026] One or more jet holes 514 are provided on the jet plate 513 to provide a jet to drive the grinding and cleaning balls 52 to move, thereby ensuring a cleaning effect.

[0027] The diameter of the jet hole 514 is smaller than the diameter of the grinding and cleaning ball 52 and is spherical in shape. The material can be plastic or quartz material according to the material of the sensor surface.

[0028] The water inlet 511 is arranged directly below the circulation pool 51, which can make the most of the kinetic energy of the water flow and fully drive the movement of the grinding and cleaning balls 52 to ensure the cleaning effect.

[0029] The position of the water discharge end 512 is higher than that of the water supply end 511 , and the water sample to be tested flows in from the bottom and flows out from the upper water discharge end 512 , which is beneficial to keep the liquid level in the circulation pool 51 stable and maintain the liquid level at a specific height.

[0030] The valve 41 is an electrically controlled valve; the water pump 42 is a variable frequency brushless DC pump; the flow meter 43 is a Hall flow meter 43; and the logic controller 71 can control the valve 41 and the water pump 42 through electrical signals.

[0031] According to one aspect of the utility model, the valve 41, water pump 42, flow meter 43 and water pressure sensor 6 are connected to the logic controller 71; wherein the water pressure sensor 6 is used to monitor the water pressure of the water sample source to be tested at the water inlet 1. When it is detected that the water pressure is lower than a certain set value, it can be considered that the water is about to be cut off. The logic controller 71 controls the valve 41 to close, cuts off the power supply of the water pump 42 and shuts down the instrument, thereby protecting the monitoring device; further, the flow meter 43 can also be used to detect whether the output flow rate and flow velocity of the water pump 42 are abnormal, which is used to assist in judging whether there is a water shortage.

[0032] Advantages of the utility model:

[0033] A water pump and a flow meter are set between the test water sample and the circulation pool. The controller adjusts the water pump according to the flow rate and flow data of the water flow monitored by the flow meter, so that the water pump can achieve automatic constant flow and meet the flow rate requirements of the sensing instrument for the water flow;

[0034] The circulation pool is equipped with grinding cleaning balls, which can collide with the sensor under the drive of constant water flow, thus playing the role of automatic cleaning;

[0035] A water pressure sensor is provided at the water inlet to determine whether the water supply is cut off. When there is a water shortage or water outage, measures such as automatic power-off to end detection can be implemented to protect the sensor instrument.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A constant-current self-cleaning water quality monitoring device, comprising a water inlet (1), a water outlet (2) and a multi-parameter sensor (3), characterized in that: The apparatus also comprises a constant-flow water supply component, an automatic cleaning component, a water pressure sensor (6) and a control host; the control host comprises a logic controller (71) and a computing module (72); the logic controller (71) is used to control the operation of the monitoring device; the computing module (72) is used to analyze and calculate the data measured by the multi-parameter sensor (3); the constant-flow water supply component comprises a valve (41), a water pump (42) and a flow meter (43); the automatic cleaning component comprises a circulation pool (51) and a grinding cleaning ball (52); the circulation pool (51) comprises a water supply end (511) and a water discharge end (512); the water sample to be tested enters the circulation pool (51) from the water supply end (511) through the water inlet (1), the valve (41), the water pump (42) and the flow meter (43), and then is discharged from the water outlet (2) through the water discharge end (512); the water supply end (511) is provided with a jet plate (513); the water pressure sensor (6) is provided at the water inlet (1).

2. The constant current self-cleaning water quality monitoring device according to claim 1, characterized in that: The jet plate (513) is provided with one or more jet holes (514).

3. The constant current self-cleaning water quality monitoring device according to claim 2, characterized in that: The diameter of the jet hole (514) is smaller than the diameter of the grinding and cleaning ball (52).

4. The constant current self-cleaning water quality monitoring device according to claim 1, characterized in that: The water supply end (511) is arranged directly below the circulation pool (51).

5. The constant current self-cleaning water quality monitoring device according to claim 1, characterized in that: The position of the water discharge end (512) is higher than the position of the water supply end (511).

6. The constant current self-cleaning water quality monitoring device according to claim 1, characterized in that: The valve (41) is an electrically controlled valve; the water pump (42) is a variable frequency pump.

7. The constant current self-cleaning water quality monitoring device according to claim 6, characterized in that: The valve (41), water pump (42), flow meter (43) and water pressure sensor (6) are connected to a logic controller (71).

Images