Piped drinking water supply equipment

Abstract

This utility model discloses a pipeline-based, differentiated direct drinking water supply device, including a raw water pipeline, a water storage tank, a water supply pipeline, and a control cabinet. The raw water pipeline is equipped with a low-precision inlet pressure sensor, an inlet valve, a low-precision filter assembly, a medium-precision inlet pressure sensor, a medium-precision filter assembly, a high-pressure inlet valve, a high-precision inlet pressure sensor, a booster pump, a high-precision filter assembly, an online water quality monitor, and a water tank inlet valve. The raw water pipeline is connected to a flushing pipeline, which is equipped with an abnormal drainage valve. The flushing ports of each filter assembly are connected to the flushing pipeline via pipelines, each equipped with a flushing valve. The water storage tank is equipped with a level sensor. The water supply pipeline is equipped with a circulation pump and a disinfection and sterilization device. Compared with existing technologies, this utility model can achieve intelligent flushing of each filter assembly and centralized collection of flushing water, and can monitor the water quality of the filtered direct drinking water, perform circulating disinfection and sterilization, and store the water to meet peak water usage regulation needs.

Description

Technical Field

[0001] This utility model belongs to the field of direct drinking water supply, specifically relating to pipeline-based, differentiated direct drinking water supply equipment. Background Technology

[0002] Piped drinking water systems are a type of differentiated water supply technology. By deeply purifying tap water and then delivering it to users through an independent and closed circulation network, a high-quality water supply mode of "just turn on the tap and drink" is achieved. This technology is mainly used in high-density water use scenarios such as residential communities, schools, hospitals, and office buildings to solve the pain points of traditional tap water being undrinkable, secondary pollution of bottled water, and high costs.

[0003] Currently, some existing piped drinking water equipment has some problems. For example, a reverse osmosis drinking water purification device disclosed in patent document CN210122529U has some issues: although the mechanical filter (quartz sand), activated carbon filter, and reverse osmosis filter chamber are all equipped with sewage pipes or flushing devices, the flushing wastewater is directly discharged without a recycling system, which goes against the trend of water conservation and results in serious waste of water resources; water quality sensors are only installed in the pure water tank, and the water quality at the filter outlet is not monitored in real time, making it difficult to locate and detect abnormal water quality in a timely manner; the reverse osmosis membrane flushing relies on periodic mechanical rotation and is not triggered by pressure difference or water quality changes, which easily leads to "over-flushing" or "under-flushing", resulting in a high frequency of manual maintenance.

[0004] Therefore, it is necessary to design a piped drinking water system that can centrally collect flushing water, store drinking water, meet peak water usage regulation needs, and circulate and sterilize drinking water. Utility Model Content

[0005] The purpose of this utility model is to overcome the problems of existing piped drinking water equipment and provide a piped, differentiated drinking water supply equipment that can centrally collect flushing water, store drinking water, meet peak water usage regulation, and circulate and sterilize drinking water.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a pipeline-based direct drinking water supply equipment, including a raw water pipeline, a water storage tank, a water supply pipeline, and a control cabinet. The raw water pipeline is connected to the water storage tank, and both ends of the water supply pipeline are connected to the water storage tank. The raw water pipeline is sequentially equipped with a low-precision inlet pressure sensor, an inlet valve, a low-precision filter assembly, a medium-precision inlet pressure sensor, a medium-precision filter assembly, a high-pressure inlet valve, a high-precision inlet pressure sensor, a booster pump, a high-precision filter assembly, an online water quality monitor, and a water tank inlet valve. A flushing pipeline connects the online water quality monitor and the water tank inlet valve. An abnormal drainage valve is installed at the connection point between the flushing pipeline and the raw water pipeline. The flushing ports of the low-precision filter assembly, the medium-precision filter assembly, and the high-precision filter assembly are respectively connected to the flushing pipeline via pipelines, and each pipeline is equipped with a low-precision flushing valve, a medium-precision flushing valve, and a high-precision flushing valve. The system includes a flushing valve and a forced flushing valve. A concentrated water bypass pipe is installed on the forced flushing valve's pipeline, connecting the valve before and after. A concentrated water regulating valve is installed on the concentrated water bypass pipe. The water storage tank has an air vent with an air filter and a level sensor. The water supply pipeline is sequentially equipped with a circulation pump, a water outlet, and a disinfection and sterilization device. A low-precision inlet pressure sensor, an inlet valve, a medium-precision inlet pressure sensor, a high-pressure inlet valve, a high-precision inlet pressure sensor, a booster pump, an online water quality monitor, a water tank inlet valve, an abnormal drainage valve, a low-precision flushing valve, a medium-precision flushing valve, a forced flushing valve, a level sensor, a circulation pump, and a disinfection and sterilization device are electrically connected to the control cabinet. The control cabinet controls the opening and closing of the inlet valve, high-pressure inlet valve, water tank inlet valve, abnormal drainage valve, low-precision flushing valve, medium-precision flushing valve, and forced flushing valve, as well as the start and stop of the booster pump, circulation pump, and disinfection and sterilization device.

[0007] Optionally, a backwash tank is connected to the raw water pipeline between the medium-precision filter assembly and the high-pressure inlet valve.

[0008] Optionally, the disinfection and sterilization device is an ultraviolet sterilizer.

[0009] The operation process of this utility model is as follows: The raw water pipeline is connected to the city's water supply network. The concentrate regulating valve is manually adjusted to set the concentrate to pure water ratio to meet the water production requirements. During normal water production, the control cabinet controls the inlet valve to open, all flushing valves to close, the high-pressure inlet valve to open, the abnormal drain valve to close, and the water tank inlet valve to open. Tap water from the city's network passes through low-precision and medium-precision filter components, is pressurized by a booster pump, and then passes through a high-precision filter component. The resulting direct drinking water flows through a system where the water quality meets the standards. The line monitoring instrument enters the water storage tank. When the water level sensor in the water storage tank detects that the water level in the tank has reached the preset high or low level, the control cabinet controls the opening and closing of the inlet valve, high-pressure inlet valve and water tank inlet valve, as well as the start and stop of the booster pump, thereby adjusting the water production process to maintain a certain amount of drinking water in the water storage tank. The drinking water in the water storage tank enters the water supply pipeline, is pressurized by the circulation pump and then supplied to the water end for use. The drinking water at the end of the water supply pipeline flows through the disinfection and sterilization device, and after disinfection and sterilization, it flows back to the water storage tank.

[0010] When the low-precision inlet water pressure sensor detects a pressure greater than that detected by the medium-precision inlet water pressure sensor, and the difference reaches a set value, the control cabinet controls the high-pressure inlet water valve to close, the booster pump to stop, and the low-precision flushing valve to open, allowing tap water to flush the low-precision filter components. Of course, the control cabinet can also set the flushing duration and flushing start time for active flushing, and the flushing water enters the flushing pipeline through the low-precision flushing valve.

[0011] When the medium-precision inlet water pressure sensor detects that the pressure is greater than that detected by the high-precision inlet water pressure sensor, and the difference reaches the set value, the control cabinet controls the high-pressure inlet water valve to close, the booster pump to stop, the medium-precision flushing valve to open, and the low-precision filter component to produce water to flush the medium-precision filter membrane component. Of course, the flushing time and flushing start time can also be set by the control cabinet for active flushing. The flushing water enters the flushing pipeline through the medium-precision flushing valve.

[0012] The forced flushing valve is closed during normal water production. When no water is being produced (water tank inlet valve is closed) or the equipment has just started (inlet valve switches from closed to open), the control cabinet controls the forced flushing valve to open. The medium-precision filter module produces a large flow of water to flush the high-precision filter membrane module. After flushing for a certain period of time, the forced flushing valve closes, and the flushing water enters the flushing pipeline through the forced flushing valve. Of course, the flushing duration and flushing start time can also be set by the control cabinet for active flushing.

[0013] When the online water quality monitor detects abnormal water quality parameters, the control cabinet opens the abnormal drain valve and closes the water tank inlet valve, allowing substandard water to flow into the flushing pipeline. The control cabinet then issues an alarm to alert maintenance personnel that the water production is abnormal.

[0014] The principle of this invention is as follows: Tap water is filtered using a progressive filtration method of "low precision (multi-media) - medium precision (ultrafiltration) - high precision (reverse osmosis)" to produce drinking water, which is then stored in a water tank. Each filtration stage is equipped with corresponding sensors and flushing valves to achieve intelligent flushing at each stage, ensuring the long-term operation of the filtration components. An online water quality monitor and an abnormal drainage valve are installed at the end of the filtration process. Water that does not meet the standards enters the flushing pipeline, ensuring the quality of the drinking water in the water tank. The water collected in the flushing pipeline is reused (for toilet flushing, landscaping, etc.). Using the water tank as the drinking water source, a circulating pump supplies drinking water to the water supply terminals on the water supply pipeline. The remaining drinking water is disinfected and sterilized before returning to the water tank through the water supply pipeline. The water tank adjusts the amount of drinking water in the tank through a level sensor and the opening and closing of the water inlet valve, thus achieving a continuous supply of drinking water.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention can realize intelligent rinsing of each filter component and centralized collection of rinsing water, and perform water quality monitoring, circulation disinfection and sterilization, and storage of filtered drinking water to ensure the quality of drinking water and meet the needs of peak water usage regulation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] The components described in the attached diagram are labeled as follows: raw water pipeline 1, water storage tank 2, water supply pipeline 3, control cabinet 4, low-precision inlet water pressure sensor 5, inlet valve 6, low-precision filter assembly 7, medium-precision inlet water pressure sensor 8, medium-precision filter assembly 9, high-pressure inlet valve 10, high-precision inlet water pressure sensor 11, booster pump 12, high-precision filter assembly 13, online water quality monitor 14, water tank inlet valve 15, flushing pipeline 16, abnormal drain valve 17, low-precision flushing valve 18, medium-precision flushing valve 19, forced flushing valve 20, concentrated water bypass pipe 21, concentrated water regulating valve 22, air filter 23, liquid level sensor 24, circulation pump 25, disinfection and sterilization device 26, backwash tank 27. Detailed Implementation

[0018] Example 1, in conjunction with the following Figure 1Further description of this utility model: A pipeline-based direct drinking water supply device includes a raw water pipeline 1, a water storage tank 2, a water supply pipeline 3, and a control cabinet 4. The raw water pipeline is connected to the water storage tank, and both ends of the water supply pipeline are connected to the water storage tank. The raw water pipeline is sequentially equipped with a low-precision inlet pressure sensor 5, an inlet valve 6, a low-precision filter assembly 7, a medium-precision inlet pressure sensor 8, a medium-precision filter assembly 9, a high-pressure inlet valve 10, a high-precision inlet pressure sensor 11, a booster pump 12, a high-precision filter assembly 13, a water quality online monitor 14, and a water tank inlet valve 15. A flushing pipeline 16 connects the raw water pipeline between the water quality online monitor and the water tank inlet valve. An abnormal drainage valve 17 is provided at the connection point between the flushing pipeline and the raw water pipeline. The flushing ports of the precision filter assembly, medium-precision filter assembly, and high-precision filter assembly are connected to the flushing pipeline via pipes. These pipes are equipped with a low-precision flushing valve 18, a medium-precision flushing valve 19, and a forced flushing valve 20, respectively. A concentrated water bypass pipe 21 is connected to the forced flushing valve via the pipe. A concentrated water regulating valve 22 is installed on the concentrated water bypass pipe. The water storage tank has an air vent with an air filter 23 and a liquid level sensor 24. The water supply pipeline is sequentially equipped with a circulation pump 25, a water outlet, and a disinfection and sterilization device 26. The low-precision, medium-precision, and high-precision inlet pressure sensors are pressure transmitters, electrical contact pressure gauges, etc., while the liquid level sensor is an ultrasonic level gauge or an infrared level gauge. Linear level gauges, float-type level gauges, etc.; air filters are filter media (filter cotton, etc.) used to isolate dust, bacteria, insects, and other impurities from the outside air; inlet valves, high-pressure inlet valves, water tank inlet valves, abnormal drainage valves, low-precision flushing valves, medium-precision flushing valves, and forced flushing valves are pneumatic, electric, electromagnetic, or other mechanical valves (electromagnetic valves are preferred); concentrate regulating valves are manual flow regulating valves; low-precision filter components are multi-media filters filled with various filter media or precision filters using cloth bags, PP cotton, or stainless steel filter screens; medium-precision filter components are ultrafiltration membrane or microfiltration membrane filter components; high-precision filter components are reverse osmosis membrane or nanofiltration membrane filter components; online water quality monitors monitor the conductivity, color, and turbidity of flowing water in real time. The system includes real-time water quality monitoring instruments (containing multiple water quality sensors) for parameters such as pH and dissolved oxygen; disinfection and sterilization devices such as ultraviolet sterilizers, chlorine dioxide generators, and ozone sterilizers; low-precision inlet pressure sensors, inlet valves, medium-precision inlet pressure sensors, high-pressure inlet valves, high-precision inlet pressure sensors, booster pumps, online water quality monitoring instruments, water tank inlet valves, abnormal drainage valves, low-precision flushing valves, medium-precision flushing valves, forced flushing valves, level sensors, circulation pumps, and disinfection and sterilization devices, all electrically connected to the control cabinet. The control cabinet controls the opening and closing of the inlet valves, high-pressure inlet valves, water tank inlet valves, abnormal drainage valves, low-precision flushing valves, medium-precision flushing valves, and forced flushing valves, as well as the start and stop of the booster pumps, circulation pumps, and disinfection and sterilization devices.

[0019] To improve the rinsing effect of the medium-precision filter component, a backwash tank 27 is connected to the raw water pipeline between the medium-precision filter component and the high-pressure water inlet valve. When rinsing the medium-precision filter component, the water produced by the low-precision filter component and the water stored in the backwash tank are used together to rinse the medium-precision filter component, which can effectively improve the rinsing effect.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline-based direct drinking water supply system, comprising a raw water pipeline (1), a water storage tank (2), a water supply pipeline (3), and a control cabinet (4), wherein the raw water pipeline is connected to the water storage tank, and both ends of the water supply pipeline are connected to the water storage tank, characterized in that: The raw water pipeline is sequentially equipped with a low-precision inlet pressure sensor (5), an inlet valve (6), a low-precision filter assembly (7), a medium-precision inlet pressure sensor (8), a medium-precision filter assembly (9), a high-pressure inlet valve (10), a high-precision inlet pressure sensor (11), a booster pump (12), a high-precision filter assembly (13), an online water quality monitor (14), and a water tank inlet valve (15). A flushing pipeline (16) connects the online water quality monitor and the water tank inlet valve. An abnormal drain valve (17) is installed at the connection point between the flushing pipeline and the raw water pipeline. The flushing ports of the low-precision filter assembly, the medium-precision filter assembly, and the high-precision filter assembly are connected to the flushing pipeline via pipes. A low-precision flushing valve (18), a medium-precision flushing valve (19), and a forced flushing valve (20) are respectively installed on these pipes. A pressure-sensitive flushing valve is installed on the pipe of the forced flushing valve. A concentrate bypass pipe (21) is connected to the front and back of the forced flushing valve. A concentrate regulating valve (22) is provided on the concentrate bypass pipe. The water storage tank is equipped with an air vent with an air filter (23) and a liquid level sensor (24). A circulation pump (25), a water supply end, and a disinfection and sterilization device (26) are provided in sequence on the water supply pipeline. A low-precision inlet pressure sensor, an inlet valve, a medium-precision inlet pressure sensor, a high-pressure inlet valve, a high-precision inlet pressure sensor, a booster pump, an online water quality monitor, a water tank inlet valve, an abnormal drainage valve, a low-precision flushing valve, a medium-precision flushing valve, a forced flushing valve, a liquid level sensor, a circulation pump, and a disinfection and sterilization device are electrically connected to the control cabinet. The control cabinet controls the opening and closing of the inlet valve, the high-pressure inlet valve, the water tank inlet valve, the abnormal drainage valve, the low-precision flushing valve, the medium-precision flushing valve, and the forced flushing valve, as well as the start and stop of the booster pump, the circulation pump, and the disinfection and sterilization device.

2. The piped, differentiated direct drinking water supply equipment according to claim 1, characterized in that: A backwash tank (27) is connected to the raw water pipeline between the medium-precision filter assembly and the high-pressure inlet valve.

3. The piped, differentiated direct drinking water supply equipment according to claim 1, characterized in that: The disinfection and sterilization device is an ultraviolet sterilizer.

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