Tap water pretreatment equipment

Abstract

The invention relates to tap water pretreatment equipment which is provided with a water body sampling module, a water quality analysis module, a water treatment module and a central control module, the water body sampling module is used for water quality sampling and comprises a water body sampling box and a liquid suction booster pump, and a pressure sensor is installed at an outlet of the liquid suction booster pump; when the real-time pressure value, monitored by the pressure sensor, of the liquid output by the booster pump is smaller than the set pressure value, the booster pump is controlled to stop running; the water quality analysis module is used for measuring the content of chlorophyll a in a water body and comprises a flow cell, a fluorescent filtering system and ultraviolet light sources, and at least two ultraviolet light sources are located on the two sides of the fluorescent filtering system at an inclined angle; the central control module is used for receiving an electric signal of the photomultiplier and processing and calculating the concentration content of chlorophyll a, and when the detected concentration content of chlorophyll a in the water body is greater than a set value alpha, the water treatment module performs purification treatment. The water surface chlorophyll a can meet the long-time continuous measurement requirement and is high in detection accuracy.

Description

Technical Field

[0001] The invention relates to the field of water treatment, in particular to a tap water pretreatment device. Background Art

[0002] The tap water treatment equipment consists of three parts: pretreatment, reverse osmosis desalination system, and sterilization system. First of all, the raw water needs to be treated because there are large particles in the raw water. If they are not cleaned up, other accessories in the equipment will be damaged. At this time, a precision filter can be used to remove the particulate matter. Then, it enters the reverse osmosis device and purifies the water using the membrane separation principle. This step can remove organic matter, microorganisms and bacteria in the water. The filter membrane original has the characteristics of selective filtration and can retain nutrients in the water. Therefore, after this procedure, harmful substances in the water can be effectively removed, but the trace elements in the water are still intact and fully meet the healthy drinking standards. Finally, in order to ensure the safety of drinking water, disinfection technology is used to deeply sterilize the water. After the above process treatment, everyone can drink it with confidence.

[0003] The concentration of chlorophyll a in water represents the amount of chlorophyll-containing organisms in the water and is an important part of water quality analysis. Due to the impact of human activities on water quality, this analysis is becoming increasingly important. Traditional chlorophyll a detection instruments, especially online instruments, mostly use a measurement method in which the sensor is immersed in water. Due to water pollution, the optical system cannot work continuously for a long time, and is interfered by water turbidity, resulting in low detection accuracy. Summary of the invention

[0004] Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a tap water pretreatment device that can meet the requirements of long-term continuous measurement and detect chlorophyll a on the water surface with high accuracy.

[0005] The technical solution of the present invention is: a tap water pretreatment device, comprising a water sampling module, a water quality analysis module, a water treatment module and a central control module.

[0006] The water sampling module is used for sampling water quality, filtering and intercepting algae and then sending them to the water quality analysis module. It includes a water sampling box and a liquid suction booster pump. A pressure sensor is installed at the outlet of the liquid suction booster pump. When the real-time pressure value of the booster pump output liquid monitored by the pressure sensor is less than the set pressure value, the booster pump is controlled to stop running;

[0007] The water quality analysis module is used to measure the chlorophyll a content in water bodies, and includes a circulation pool, a fluorescent filtering system and an ultraviolet light source. The circulation pool is provided with a water inlet and a water outlet respectively. The fluorescent filtering system is located directly above the water surface of the circulation pool. At least two ultraviolet light sources are located at both sides of the fluorescent filtering system at an inclined angle. The water quality analysis module also has a light angle adjuster. The light sources on both sides are symmetrically adjusted to ensure that the light sources are exactly in the center of the water surface. The inclination angle between the center line of the ultraviolet light source and the water surface is β. A photomultiplier tube is arranged on the fluorescent filtering system. The photomultiplier tube is electrically connected to the signal amplifier input end of the central control module. By irradiating the chlorophyll-containing water sample on the side with an ultraviolet light source above the water surface, the chlorophyll a near the surface of the water sample on the side is excited by ultraviolet rays to produce fluorescence. This fluorescence is filtered by the filter system on the water surface. The filtered fluorescence enters the photomultiplier tube and is converted into an electrical signal.

[0008] The central control module is used to receive the electrical signal of the photomultiplier tube and process and calculate the chlorophyll a concentration. When the chlorophyll a concentration in the detected water body is greater than the set value α, it is purified by the water treatment module.

[0009] Preferably, the inclination angle β is variable and is within the range of 30-60°.

[0010] Preferably, the ultraviolet light source is also magnified by a lens, which includes a mounting plate, a polarizing portion located on the upper part of the mounting plate, and a boss located on the lower part of the mounting plate. The polarizing portion is arranged obliquely relative to the mounting plate, and a focusing port is provided at the upper end of the polarizing portion for the light beam of the ultraviolet light source to enter.

[0011] Preferably, the water sampling box also has a spiral flow channel inside for water to pass through.

[0012] Preferably, it also includes a power cut-off device, which can cut off the power supply to the booster pump, thereby controlling the booster pump to stop running.

[0013] Preferably, the water sampling module also includes a liquid level sensor and a liquid inlet solenoid valve. When the real-time liquid level value of the water sampling box monitored by the liquid level sensor is lower than a set low liquid level value, the liquid inlet solenoid valve is controlled to open; when the real-time liquid level value reaches a set high liquid level value, the liquid inlet solenoid valve is controlled to close.

[0014] By adopting the above technical solution, the following advantages are achieved:

[0015] 1. Install a liquid suction booster pump in the water sampling box to force liquid supply, which fully meets the sampling liquid demand. During the liquid suction process, the liquid pressure output by the booster pump is monitored by a pressure sensor. Once the real-time pressure value of the monitoring data is lower than the set pressure value, it means that the pressure in the liquid suction pipeline is low or there is no liquid. Then the power cut-off device cuts off the power supply of the pump and stops the operation of the pump to prevent the pump from sucking empty and burning the motor of the booster pump, thereby reducing the cost of later repair and maintenance;

[0016] 2. The water surface chlorophyll a detection device of the present invention has a fluorescent filtering system and an ultraviolet light source disposed above the water surface of the circulation pool. The fluorescent filtering system is located directly above the water surface of the circulation pool, and at least two ultraviolet light sources are disposed at inclined angles on both sides of the fluorescent filtering system. A photomultiplier tube structure is disposed on the fluorescent filtering system. The structure is reasonable, does not contact the water body, eliminates pollution and turbidity interference, and can meet the requirements of long-term continuous measurement; and can monitor the growth of explosive harmful algae in water in real time, with timely detection and high accuracy;

[0017] 3. The light beam of the light source can be deflected by tilting the polarizing portion of the lens so that the light beam can be deflected to the designated irradiation position, and a focusing port is provided at the upper end of the polarizing portion so that the light beam of the light source can enter and be focused;

[0018] 4. The spiral flow channel allows the water to turn when passing through, filtering out impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a water sampling module according to a specific embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a water quality analysis module according to a specific embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a lens according to a specific embodiment of the present invention.

[0023] In the figure: water sampling module 1, water quality analysis module 2, water treatment module 3 and central control module 4, water sampling box 11, liquid suction booster pump 12, pressure sensor 13, through pool 21, fluorescent filtering system 22, ultraviolet light source 23, water inlet 211, water outlet 212, photomultiplier tube 24, lens 25, mounting plate 251, polarizing part 252, boss 252, focusing port 2521 DETAILED DESCRIPTION

[0024] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0025] like Figure 1-4As shown, a tap water pretreatment device of the present invention comprises a water sampling module 1, a water quality analysis module 2, a water treatment module 3 and a central control module 4.

[0026] The water sampling module 1 is used for sampling water quality, and after filtering and intercepting algae, it is sent to the water quality analysis module. It includes a water sampling box 11 and a liquid suction booster pump 12. The outlet of the liquid suction booster pump 12 is installed with a pressure sensor 13. When the real-time pressure value of the liquid output by the booster pump 12 monitored by the pressure sensor 13 is less than the set pressure value, the booster pump 12 is controlled to stop running; it also includes a power cutoff device, which can cut off the power supply to the booster pump 12 to control the booster pump 12 to stop running. The water sampling module 1 also includes a liquid level sensor and a liquid inlet solenoid valve. When the real-time liquid level value of the water sampling box 11 monitored by the liquid level sensor is lower than the set low liquid level value, the liquid inlet solenoid valve is controlled to open; when the real-time liquid level value reaches the set high liquid level value, the liquid inlet solenoid valve is controlled to close. The water sampling box 11 also has a spiral flow channel for water to pass through.

[0027] The water quality analysis module 2 is used to measure the chlorophyll a content in the water body, and includes a circulation pool 21, a fluorescent filtering system 22 and an ultraviolet light source 23. The circulation pool 21 is provided with a water inlet 211 and a water outlet 212 respectively. The fluorescent filtering system 22 is located directly above the water surface of the circulation pool 21. At least two ultraviolet light sources 23 are located at both sides of the fluorescent filtering system 22 at an inclined angle. The water quality analysis module 2 also has a light angle adjuster. The double-sided light sources 22 are symmetrically adjusted to ensure that the light source is exactly in the center of the water surface. The center line of the ultraviolet light source 23 and the water surface have an inclination angle of β. A photomultiplier tube 24 is arranged on the fluorescent filtering system 22. The photomultiplier tube 24 is electrically connected to the signal amplifier input end of the central control module. By irradiating the chlorophyll-containing water sample on the side with the ultraviolet light source 23 above the water surface, the chlorophyll a near the surface of the water sample on the side is excited by ultraviolet rays to produce fluorescence, and this fluorescence is filtered by the filter system 22 on the water surface. The filtered fluorescence enters the photomultiplier tube 24 and is converted into an electrical signal.

[0028] The central control module 4 is used to receive the electrical signal from the photomultiplier tube 24 and process and calculate the chlorophyll a concentration. When the chlorophyll a concentration in the detected water body is greater than the set value α, the water treatment module 3 performs purification treatment.

[0029] Specifically, the inclination angle β is variable and is within the range of 30-60°.

[0030] Specifically, the ultraviolet light source 23 is also magnified by a lens 25, which includes a mounting plate 251, a polarizing portion 252 located at the upper portion of the mounting plate 251, and a boss 252 located at the lower portion of the mounting plate 251. The polarizing portion 252 is tilted relative to the mounting plate 251, and a focusing port 2521 is provided at the upper end of the polarizing portion 252 for the light beam of the ultraviolet light source 23 to enter.

[0031] The specific working principle of the tap water pretreatment equipment of the present invention is:

[0032] Under the water sampling module 1, a liquid suction booster pump 12 is installed in the water sampling box 11 to force liquid supply, which fully meets the liquid demand for sampling. During the liquid suction process, the liquid pressure output by the booster pump is also monitored by the pressure sensor 13. Once the real-time pressure value of the monitoring data is lower than the set pressure value, it means that the pressure in the liquid suction pipeline is low or there is no liquid. Then the power cut-off device cuts off the power supply of the pump and stops the operation of the pump to prevent the pump from sucking empty and burning the motor of the booster pump, thereby reducing the cost of later repair and maintenance;

[0033] The spiral flow channel makes the water turn when passing through, filtering out impurities.

[0034] Under the water quality analysis module 2, the water surface chlorophyll a detection device of the present invention is provided with a fluorescent filter system 22 and an ultraviolet light source 23 above the water surface of the circulation pool 21, the fluorescent filter system 22 is located directly above the water surface of the circulation pool 21, at least two ultraviolet light sources 23 are located at both sides of the fluorescent filter system 22 at an inclined angle, and a photomultiplier tube 24 is arranged on the fluorescent filter system 22. The structure is reasonable, does not contact the water body, eliminates pollution and turbidity interference, and can meet the requirements of long-term continuous measurement; and can monitor the growth of explosive harmful algae in water in real time, with timely detection and high accuracy;

[0035] The polarizing portion of the lens is tilted to deflect the light beam of the light source so that the light beam can be deflected to a designated irradiation position, and a focusing port is provided at the upper end of the polarizing portion to allow the light beam of the light source to enter and achieve focusing.

Claims

1. A tap water pretreatment device, characterized in that: It has a water sampling module (1), a water quality analysis module (2), a water treatment module (3) and a central control module (4). The water sampling module (1) is used for sampling water quality and filtering and intercepting algae before sending the sample to the water quality analysis module. It comprises a water sampling box (11) and a liquid suction booster pump (12). A pressure sensor (13) is installed at the outlet of the liquid suction booster pump (12). When the real-time pressure value of the liquid output by the booster pump (12) monitored by the pressure sensor (13) is less than a set pressure value, the booster pump (12) is controlled to stop running. The water quality analysis module (2) is used to measure the chlorophyll a content in water, and comprises a circulation pool (21), a fluorescent filtering system (22) and an ultraviolet light source (23). The circulation pool (21) is provided with a water inlet (211) and a water outlet (212), respectively. The fluorescent filtering system (22) is located directly above the water surface of the circulation pool (21). At least two ultraviolet light sources (23) are located at an inclined angle on both sides of the fluorescent filtering system (22). The water quality analysis module (2) also has a light angle adjuster, and the double-sided light sources (22) are symmetrically adjusted to ensure that the water quality is stable. The light source is exactly in the center of the water surface, the center line of the ultraviolet light source (23) is inclined at an angle β to the water surface, a photomultiplier tube (24) is arranged on the fluorescence filtering system (22), and the photomultiplier tube (24) is electrically connected to the input end of the signal amplifier of the central control module. By irradiating the chlorophyll-containing water sample with the ultraviolet light source (23) above the water surface, the chlorophyll a near the surface of the water sample is excited by the ultraviolet light to produce fluorescence, and the fluorescence is filtered by the filter system (22) on the water surface, and the filtered fluorescence enters the photomultiplier tube (24) and is converted into an electrical signal; The central control module (4) is used to receive the electrical signal of the photomultiplier tube (24) and process and calculate the chlorophyll a concentration content. When the chlorophyll a concentration content in the detected water body is greater than the set value α, the water treatment module (3) performs purification treatment.

2. The tap water pretreatment equipment according to claim 1, characterized in that: The inclination angle β is variable and is between 30° and 60°.

3. The tap water pretreatment equipment according to claim 1, characterized in that: The ultraviolet light source (23) is further magnified by a lens (25), and the lens (25) comprises a mounting plate (251), a polarizing portion (252) located on the upper part of the mounting plate (251), and a boss (252) located on the lower part of the mounting plate (251), wherein the polarizing portion (252) is arranged obliquely relative to the mounting plate (251), and a focusing port (2521) is provided at the upper end of the polarizing portion (252) for allowing a light beam of the ultraviolet light source (23) to enter.

4. The tap water pretreatment equipment according to claim 1, characterized in that: The water sampling box (11) also has a spiral flow channel inside for water to pass through.

5. The tap water pretreatment equipment according to claim 1, characterized in that: It also includes a power cut-off device, which can cut off the power supply to the booster pump (12), thereby controlling the booster pump (12) to stop running.

6. The tap water pretreatment equipment according to claim 1, 2 or 3, characterized in that: The water sampling module (1) also includes a liquid level sensor and a liquid inlet electromagnetic valve. When the real-time liquid level value of the water sampling box (11) monitored by the liquid level sensor is lower than a set low liquid level value, the liquid inlet electromagnetic valve is controlled to open; when the real-time liquid level value reaches a set high liquid level value, the liquid inlet electromagnetic valve is controlled to close.

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