An internet-based intelligent water affair secondary water supply system

Abstract

The present application relates to the technical field of municipal water supply, in particular to a smart water affair secondary water supply system based on the Internet, which comprises a microcomputer variable frequency control cabinet, a water pump unit and a non-negative pressure steady flow tank, a working tank and a replacement tank are respectively installed in the non-negative pressure steady flow tank, a stepped structure filter screen with multiple levels and gradually decreasing cross-sectional area is fixedly installed in the working tank and the replacement tank, a cleaning and adsorption assembly is rotatably installed on the inner wall of the non-negative pressure steady flow tank above the working tank and the replacement tank, the cleaning and adsorption assembly is used for multi-level vibration cleaning of the inner wall of the non-negative pressure steady flow tank and the filter screen and adsorbing impurities at the same time; the filter screen filters municipal water and increases water passing area; the convex points make the filter screen vibrate to improve water passing efficiency; the working tank and the replacement tank switch working states according to resident water consumption, and the inside is cleaned without stopping water; the problem that the secondary water supply system supplies water to residents is solved.

Description

Technical Field

[0001] This invention relates to the field of municipal water supply technology, specifically to an internet-based smart water management secondary water supply system. Background Technology

[0002] Municipal water supply pressure is typically between 0.15MPa and 0.35MPa, which is only sufficient for users on the sixth floor and below. Users on the sixth floor and above require pressurization of the municipal water supply, i.e., secondary water supply, to ensure normal water usage. However, after leaving the waterworks, municipal water must pass through a vast and complex pipeline system before reaching individual households.

[0003] Urban water supply networks mostly use reinforced concrete and cast iron pipes. Over the years, these pipes undergo continuous corrosion, scaling, rust, and dirt buildup. Furthermore, once laid, these pipes are difficult to clean and replace frequently. As a result, municipal water carrying a large amount of impurities and sediments accumulates in the vast and complex water supply system. When this contaminated water is supplied to high-rise residents, it needs to be pressurized. During this secondary pressurization, the contaminated water flows into the pressure-stabilizing tank connected to the municipal network. This results in the tank accumulating water containing impurities and sediments. This water, after being pressurized by pumps, is then directly supplied to residents, potentially impacting their health.

[0004] To ensure the health of drinking water for residential users, some solutions have been provided in the existing technology. For example, a municipal secondary water supply device disclosed in Chinese invention patent application number 202110527420.5 (publication date 2022.09.30) uses a drain wheel to add disinfectant to the water to disinfect and sterilize it and improve water quality, while filtering municipal water through a filter screen; however, it also has some inconveniences in actual use.

[0005] For example, in secondary water supply to residential users, the filter screen installed in the negative pressure stabilizing tank will continuously accumulate and absorb impurities from the municipal water over long-term use. This leads to filter screen blockage and a gradual reduction in water flow. Consequently, when residential water consumption reaches its peak, the water flow in the negative pressure stabilizing tank may be insufficient to meet the peak water demand, thus affecting residents' domestic water use. Furthermore, impurities on the filter screen that are not cleaned in a timely manner can secondary contaminate the municipal water supplied to residents, affecting their health.

[0006] During use, if maintenance or repair of the pressure-regulating tank or cleaning of the filter screen is required, the entire water supply system must be shut down, especially the pressure-regulating tank itself. Only then can maintenance or cleaning of the internal filter screen be performed. Since municipal water pressure is insufficient to reach high-rise residents, if the pressure-regulating tank is shut down, the municipal water will not receive secondary pressurization, directly causing water outages for residents on higher floors and disrupting their daily lives. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an Internet-based smart secondary water supply system. This system solves the problem that when existing secondary water supply systems pressurize and supply water to residential users, long-term use leads to internal corrosion and scaling in the pipe network. As a result, municipal water containing impurities and sediments is supplied to residents during pipe network transportation, thus affecting their health.

[0008] This invention provides the following technical solution: an internet-based smart secondary water supply system, comprising a microcomputer-controlled frequency converter cabinet, a pump unit, and a negative pressure stabilizing tank. The microcomputer-controlled frequency converter cabinet is used to regulate water supply and control the frequency converter pumps. The microcomputer-controlled frequency converter cabinet is floor-mounted and uses an ABB ACS510 series frequency converter. The pump unit has 3-6 pumps, which are DA type pumps, i.e., single-suction multi-stage segmented centrifugal pumps, with a flow rate of 100 m³ / h. 3 / h-200m 3 The pumps have a head of 100m-210m, a power of 50-100kw, a diameter of 40DN-120DN, and a speed of 2000-3000r / min. The three pumps can work intermittently in rotation, and the number of pumps in operation can be adjusted according to the water consumption through a microcomputer frequency converter control cabinet.

[0009] The negative pressure stabilizing tank contains a working tank and a replacement tank, both made of 4-8mm thick SUS304 stainless steel. The working tank has a diameter of 800mm-1800mm, a length of 1500mm-3600mm, can withstand a pressure of 1MPa, and has a total volume of 0.75m³. 3 -8.3m 3 The flow rate is 100m³. 3 -200m 3Both the working tank and the replacement tank have open structures. The external water inlet main of the negative pressure stabilizing tank is connected to the working tank and the replacement tank respectively through the working water inlet pipe and the replacement water inlet pipe via a three-way valve. This allows the working tank and the replacement tank to work and store water simultaneously or separately and adjust the water supply difference when water consumption fluctuates. The bottom of the working tank and the replacement tank is provided with a water outlet and a water pipe connected to the outlet three-way valve. The outlet three-way valve is used to input the municipal water in the working tank and the replacement tank to the water pump unit for pressurization and then input it to the residential user end.

[0010] During peak water consumption periods, both the working tank and the replacement tank are filled with municipal water and are in operation. During off-peak water consumption periods, the working tank and the replacement tank can operate intermittently, with one filled with municipal water and in operation, while the other is not filled with municipal water and is in a stopped state. The microcomputer frequency converter control cabinet can switch the operating states of the working tank and the replacement tank.

[0011] Both the working tank and the replacement tank have a stepped filter screen with a progressively smaller cross-sectional area fixedly installed at their openings. The diameter of the uppermost filter screen is 800mm-1800mm. The filter screen is made of 200, 300, or 400 series stainless steel. The wire diameter of the filter screen is 0.025mm-4.0mm, the mesh size is 400-2000 mesh, and the mesh opening diameter is 0.005mm-0.1mm. The stepped filter screen installed in the working tank and the replacement tank is used to filter the incoming water, thereby ensuring that the incoming water supplied to the user is pure water. This is to prevent municipal water from containing impurities or sediments during transportation in the pipeline, which could affect the user's water supply.

[0012] The stepped filter screen installed inside the working tank and the replacement tank can increase the water flow area, thereby avoiding affecting the water intake when filtering the incoming water; a cleaning adsorption component is rotatably installed on the inner wall of the negative pressure stabilizing tank above the working tank and the replacement tank. The cleaning adsorption component is used to clean the inner wall of the negative pressure stabilizing tank and the filter screen and adsorb impurities.

[0013] The inner walls of the working tank and the replacement tank are fixedly installed with a fixing ring by welding. The fixing ring is made of 400 series stainless steel or 300 series stainless steel and has a diameter of 800mm-1800mm. The surface of the fixing ring is fixedly provided with protrusions, which are made of polyurethane elastomer. A filter screen is fixedly glued to the surface of the protrusions.

[0014] The cleaning and adsorption assembly includes a rotating motor, a rotating disk, a retractable rod, a substrate, and a brush. The rotating motor is bolted to the top of the negative pressure-free flow stabilizing tank. The rotating disk is coaxially fixed to the output shaft of the rotating motor and mounted on the surface of the negative pressure-free flow stabilizing tank. The rotating motor drives the rotating disk to rotate synchronously. The rotating disk is made of aluminum alloy with a hardness of HP100 or higher. A retractable rod is bolted to the other side of the rotating disk. All retractable rods are electrically operated, with a maximum travel of 10cm-80cm. The substrate is bolted to the other end of the retractable rod. The substrate has a multi-level, progressively decreasing cross-sectional area stepped structure that can cooperate with the stepped filter screen, thus adhering to the filter screen and cleaning it. While the rotating motor drives the rotating disk, it also drives the substrate to rotate synchronously via a connecting rod, allowing the rotating substrate to clean the stepped filter screen.

[0015] A brush is glued to the surface of the substrate. This brush is used to clean sediment or impurities adhering to the filter screen surface. The brush bristles have a diameter of Φ20-Φ100mm and a length of 15mm-40mm. The substrate has an internal cavity connected to an external electric air pump via a connecting pipe. A filter bag for intercepting impurities or sediment is fixedly installed within the cavity. Multiple suction ports are located on the surface of the substrate, adjacent to the brush.

[0016] It should be noted that the substrate is coaxial with the working tank and the replacement tank.

[0017] The brushes on the surface of the substrate are arranged in a fan-shaped structure, and vibration points arranged in a fan-shaped structure are fixedly bonded to the other side of the substrate with adhesive.

[0018] Multiple vibration points are fixedly bonded to the circumferential surface of the substrate with adhesive and arranged mirror-image along the axis. A brush, also bonded to the circumferential surface of the substrate with adhesive, is adjacent to the vibration points and similarly arranged mirror-image along the axis. All vibration points are made of rubber.

[0019] The vibration points on both sides of the circumferential surface of the substrate have different diameters, which allows the vibration effect of the filter to be further improved when the vibration points are in contact with the filter.

[0020] The surface of the pressure-free flow stabilizing tank is provided with an L-shaped mounting opening, which cooperates with the rotating disk; the rotating disk is sealed and rotatably installed inside the L-shaped mounting opening.

[0021] A connecting plate is hinged between the working tank and the replacement tank. A hinge shaft is hinged inside the connecting plate, and both ends of the hinge shaft are hinged to the inner wall of the negative pressure-free flow stabilizing tank. It should be noted that the inlet and outlet of both the working tank and the replacement tank are made of corrugated pipes with telescopic function.

[0022] The top of the working tank and the replacement tank, as well as the inner wall of the negative pressure stabilizing tank, are all equipped with mutually cooperating electrode sensing plates. When the water consumption at the user end is at a low peak and the working tank and the replacement tank are in an intermittent alternating working state, the working tank or replacement tank without municipal water is driven to rise by the working tank or replacement tank with municipal water. The top of the working tank or replacement tank without municipal water can come into contact with the inner wall of the negative pressure stabilizing tank, so that the energized plate on the top of the working tank or replacement tank and the motor sensing plate on the inner wall of the negative pressure stabilizing tank come into contact.

[0023] It should be noted that during peak water consumption periods at the user end, both the working tank and the replacement tank are in operation, supplying water to the user end. At the same time, the volume of municipal water stored inside the working tank and the replacement tank changes due to the water supply, causing one of the working tank or the replacement tank to rise or fall. The top of the rising working tank or the replacement tank comes into contact with the electrode sensing plate on the inner wall of the negative pressure stabilizing tank. However, since both the working tank and the replacement tank are in operation, the microcomputer frequency converter control cabinet will not control the rotation motor to start.

[0024] Furthermore, the connecting plate has concave structures on both sides, and the concave connecting plate is tangent to the outer circumferential surface of the working tank or replacement tank. A coaxial rotating shaft is rotatably mounted on the tangential surface of the connecting plate, and the rotating shaft is perpendicular to the axis of the working tank or replacement tank. The other side of the rotating shaft is rotatably mounted on the outer circumferential surface of the working tank or replacement tank. Multiple connecting plates and hinge shafts are arranged along the axial direction of the negative pressure-free flow stabilizing tank.

[0025] A stabilizing arm is fixedly installed inside the negative pressure stabilizing tank by bolts. The stabilizing wall is located between the working tank and the replacement tank and is tangent to the inside of the negative pressure stabilizing tank. Multiple hinge shafts are hinged and pass through the stabilizing arm to connect to the negative pressure stabilizing tank.

[0026] The beneficial effects that this invention can achieve through the above technical solutions are as follows:

[0027] This application can switch its working state according to the user's peak water consumption to save energy and can continuously provide filtered pure municipal water to residential users. At the same time, after switching the working state, it can automatically clean the internal parts without stopping the machine, so as to stably provide pure municipal water to residential users and avoid the impact of long-term water supply filtration on the lives of residents due to reduced water flow. It can also avoid water outages caused by maintenance or internal cleaning that affect residents' lives.

[0028] 1. This invention, through the design of a working tank and a replacement tank, can switch working states according to the water consumption of residents to meet the peak water consumption changes of residents at different times, thereby reducing energy consumption after switching to the working state when water consumption is low; and when the working state is in a stopped state after switching working states, it automatically triggers the cleaning of the filter screen, thereby cleaning without interrupting the water supply, thus ensuring a stable supply of pure municipal water while avoiding affecting the domestic water supply of residents, so as to ensure the health and safety of residents.

[0029] 2. This invention filters municipal water containing impurities and sediments through the design of a filter screen and a cleaning adsorption component, and increases the water flow area to ensure a stable water supply and avoid affecting the daily lives of residents. At the same time, when switching working states to clean the filter screen, the cleaning adsorption component can cause the filter screen to vibrate and adsorb the cleaned impurities, thereby cleaning without stopping the machine or opening the tank.

[0030] 3. This invention can vibrate the filter screen while cleaning it, thereby improving the cleaning effect on the surface of the filter screen and making it easier for the impurities to be adsorbed by the dust suction port. At the same time, while filtering municipal water, the filter screen can vibrate while increasing the filtration area, thereby improving the filtration effect of municipal water and avoiding the influence of liquid surface tension on the water intake. Therefore, it can stably provide pure municipal water to residential users when the peak water consumption of residents changes, without affecting the domestic water supply of residential users. Attached Figure Description

[0031] The accompanying drawings of the present invention will be described below to enable those skilled in the art to understand them.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the other side of the overall structure of the present invention;

[0034] Figure 3 For the present invention Figure 2 A schematic diagram of the structure on the other side;

[0035] Figure 4This is a schematic diagram of the internal structure of the negative pressure-free flow stabilizing tank of the present invention;

[0036] Figure 5 For the present invention Figure 4 A schematic diagram of the structure on the other side;

[0037] Figure 6 This is a schematic diagram of the overall structure of the working tank and the replacement tank of the present invention;

[0038] Figure 7 This is a schematic diagram of the other side of the working tank and replacement tank of the present invention;

[0039] Figure 8 For the present invention Figure 7 A schematic diagram of the cross-sectional structure;

[0040] Figure 9 For the present invention Figure 8 A magnified structural diagram of A in the middle;

[0041] Figure 10 This is a schematic diagram of the overall structure of the substrate of the present invention.

[0042] In the diagram: 1. Water pump unit; 2. Pressure-free flow stabilizing tank; 21. Working tank; 22. Replacement tank; 23. Working water inlet pipe; 24. Replacement water inlet pipe; 25. Filter screen; 26. Fixing ring; 261. Protrusion; 3. Cleaning adsorption assembly; 31. Rotating motor; 32. Rotating disc; 33. Retracting rod; 34. Base; 35. Brush; 36. Dust suction port; 37. Vibration point; 4. Connecting plate; 41. Hinge shaft; 42. Rotating shaft; 43. Stabilizing wall. Detailed Implementation

[0043] To facilitate understanding by those skilled in the art, the technical solution of the present invention will be explained in detail below.

[0044] Example 1: As Figures 1 to 3 The illustrated smart secondary water supply system based on the internet includes a microcomputer-controlled frequency converter cabinet, a water pump unit 1, and a negative pressure stabilizing tank 2. The microcomputer-controlled frequency converter cabinet is used to regulate water supply and control the frequency converter water pumps. The microcomputer-controlled frequency converter cabinet is floor-mounted and uses an ABB ACS510 series frequency converter. The water pump unit 1 is equipped with three water pumps. Given the large number of residents and the height of the floors in the high-rise residential building, the water pump flow rate is set at 160 m³ / h. 3 The pump has a head of 225m, a power of 90kw, a diameter of DN125, and a speed of 2400r / min. The three pumps can work intermittently in rotation, and the number of pumps in operation can be adjusted according to the water consumption through a microcomputer frequency converter control cabinet.

[0045] like Figures 4 to 7As shown, the negative pressure stabilizing tank 2 contains a working tank 21 and a replacement tank 22. Both the working tank 21 and the replacement tank 22 are made of 6mm thick SUS304 stainless steel. The working tank 21 and the replacement tank 22 have a diameter of 1400mm, a length of 2800mm, and a total internal volume of 3.9M³. 3 Minimum input or output flow rate is 140M. 3 / h, maximum input or output flow rate is 380M 3 / h; Both the working tank 21 and the replacement tank 22 are open structures. The external water inlet main pipe of the negative pressure stabilizing tank 2 inputs municipal water into the working tank 21 and the replacement tank 22 through the working water inlet pipe 23 and the replacement water inlet pipe 24 respectively via the water inlet three-way valve, so that the working tank 21 and the replacement tank 22 can simultaneously or separately store water and adjust the water supply difference when the water consumption fluctuates. The bottom of the working tank 21 and the replacement tank 22 is provided with a water outlet and connected to the water outlet three-way valve. The water outlet three-way valve is used to input the municipal water in the working tank 21 and the replacement tank 22 into the water pump unit 1 for pressurization and then input into the residential user end.

[0046] During peak water consumption periods, both the working tank 21 and the replacement tank 22 are filled with municipal water and are in operation. During off-peak water consumption periods, the working tank 21 and the replacement tank 22 can operate intermittently, with one filled with municipal water and in operation, while the other is not filled with municipal water and is in a stopped state. The microcomputer frequency converter control cabinet can switch the operating states of the working tank 21 and the replacement tank 22.

[0047] like Figures 6 to 8 As shown, both the working tank 21 and the replacement tank 22 have multi-stage filter screens 25 with progressively smaller cross-sectional areas fixedly installed at their openings. The diameter of the uppermost filter screen is 1400mm. The filter screen is made of 304 stainless steel, with a wire diameter of 0.06mm, a mesh count of 2000, and a mesh opening diameter of 0.01. The stepped filter screens 25 installed inside the working tank 21 and the replacement tank 22 are used to filter the incoming water, thereby ensuring that the incoming water supplied to the user is pure water, so as to avoid the municipal water containing impurities or sediments during transportation in the pipeline, which would affect the user's water use.

[0048] The stepped filter screen 25 installed inside the working tank 21 and the replacement tank 22 increases the water flow area, thereby preventing the water intake from being affected during filtration. A cleaning and adsorption assembly 3 is rotatably installed on the inner wall of the pressure-free flow stabilizing tank 2 above the working tank 21 and the replacement tank 22. This assembly cleans the inner wall of the pressure-free flow stabilizing tank 2 and the filter screen 25, adsorbing impurities. When the filter screen 25 is filtering municipal water, and the working tank 21 and the water inlet tank are in an intermittent alternating working state, the cleaning and adsorption assembly 3 can clean the inner wall of the inlet side of the working tank 21 or the replacement tank 22 and the filter screen 25 when they are not in operation. This prevents impurities or sediments filtered by the filter screen 25 from adhering and accumulating on its surface, thus avoiding clogging of the filter screen 25 during use and preventing a reduction in water intake that could affect peak water consumption at the user end.

[0049] like Figures 8 to 9 As shown, the inner walls of the working tank 21 and the replacement tank 22 are fixedly installed with a fixing ring 26 by welding. The fixing ring is made of 410 stainless steel and has a diameter of 1400mm. The surface of the fixing ring 26 has protrusions 261 fixedly provided. The protrusions 261 are made of polyurethane elastomer, and a filter screen 25 is glued to the surface of the protrusions 261. When the working tank 21 or the replacement tank 22 is in operation and contains municipal water, when the municipal water enters the working tank 21 or the replacement tank 22 and comes into contact with the filter screen 25, the filter screen 25 can be shaken by the polyurethane elastomer protrusions 261, allowing the municipal water to be quickly filtered by the filter screen 25 through the shaking.

[0050] The protrusions 261 made of polyurethane elastomer material prevent municipal water from forming a water film in the gaps on the surface of the filter screen 25 due to the surface tension of the water when it comes into contact with the filter screen 25. This film also blocks the air in the working tank 21 or replacement tank 22. As a result, the air pressure in the working tank 21 or replacement tank 22, combined with the tension of the water film, blocks the filter screen 25, thereby preventing the filter screen 25 from affecting the inflow of municipal water when filtering impurities and sediments.

[0051] like Figure 4 and Figure 8As shown, the cleaning and adsorption assembly 3 includes a rotating motor 31, a rotating disk 32, retractable rods 33, a substrate 34, and a brush 35. The rotating motor 31 is bolted to the top of the negative pressure-free flow stabilizing tank 2. The rotating disk 32 is coaxially bolted to the output shaft end of the rotating motor 31. The rotating disk 32 is rotatably mounted on the surface of the negative pressure-free flow stabilizing tank 2, and the rotating motor 31 drives the rotating disk 32 to rotate synchronously. Four retractable rods 33 are bolted to the other side of the rotating disk 32. All four retractable rods 33 are electrically operated, and their maximum travel is 15cm. The substrate 34 is bolted to the other end of each retractable rod 33. The substrate 34 has a stepped structure and can cooperate with the stepped filter screen 25, thereby adhering to the filter screen 25 and cleaning it. While the rotating motor 31 drives the rotating disk 32 to rotate, it also drives the substrate 34 to rotate synchronously via a connecting rod, allowing the rotating substrate 34 to clean the stepped filter screen 25.

[0052] like Figure 10 As shown, a brush 35 is fixedly bonded to the surface of the substrate 34 with adhesive. The brush 35 is used to clean the sediment or impurities attached to the surface of the filter screen 25. The brush 35 is made of PA material, with a bristle diameter of Φ40mm and a bristle length of 25mm. While the substrate 34 rotates synchronously via a rotating motor 31, the brush 35 rotates with the substrate 34, thereby cleaning the impurities and sediments on the surface of the filter screen 25. The substrate 34 has an internal cavity connected to an external electric air pump via a connecting pipe. A filter bag for intercepting impurities or sediments is fixedly installed inside the cavity. Multiple suction ports are located on the surface of the substrate 34, adjacent to the brush 35. These suction ports, through the electric air pump, draw the impurities or sediments cleaned by the brush 35 into the cavity, where they are collected by the filter bag. This allows workers to clean the filter bag only periodically.

[0053] It should be noted that the substrate 34 is coaxial with the working tank 21 and the replacement tank 22. When the working tank 21 or the replacement tank 22 is intermittently working and in a non-working state, the rotating motor 31 starts and synchronously drives the rotating disk 32, the retraction rod 33, and the substrate 34 to rotate synchronously; at the same time, the retraction rod 33 extends so that the substrate 34 gradually fits into the filter screen 25; thus, after the substrate 34 fits into the filter screen 25, the surface of the filter screen 25 can be cleaned by the brush 35 to remove impurities and deposits from the surface of the filter screen 25; at the same time, the brush 35 is adjacent to the dust suction port, so that the impurities and deposits cleaned by the brush 35 are adsorbed through the dust suction port and collected into the filter bag.

[0054] like Figure 10 As shown, the brushes 35 on the surface of the substrate 34 are arranged in a fan-shaped structure, and vibration points 37 arranged in a fan-shaped structure are fixedly bonded to the other side of the substrate 34 with adhesive. While the substrate 34 is attached and the brushes 35 rotate to clean impurities and deposits from the surface of the filter screen 25, the vibration points 37 on the other side of the substrate 34 apply pressure to the filter screen 25 and cause it to vibrate during continuous rotation. This allows the brushes 35 to clean the impurities and deposits from the filter screen 25 more thoroughly and efficiently through the vibration of the filter screen 25, preventing incomplete cleaning of the filter screen 25 from affecting the water intake.

[0055] like Figure 10 As shown, multiple vibration points 37 are fixedly bonded to the circumferential surface of the substrate 34 with adhesive and arranged mirror-image along the axis. A brush 35, also bonded to the circumferential surface of the substrate 34 with adhesive, is adjacent to the vibration points 37 and similarly arranged mirror-image along the axis. All vibration points 37 are made of rubber, which allows for elastic deformation. This elastic deformation prevents damage to the filter screen 25 when in contact with it and causing it to vibrate, and further enhances the vibration effect of the filter screen 25.

[0056] The vibration points 37 on both sides of the circumferential surface of the substrate 34 have different diameters, so that when the vibration points 37 are in contact with the filter screen 25, the vibration effect of the filter screen 25 can be further improved by the vibration points 37 with different diameters on the circumferential surface of the substrate 34.

[0057] like Figure 8 As shown, the surface of the negative pressure-free flow stabilizing tank 2 has an L-shaped mounting opening, which cooperates with the rotating disk 32. The rotating disk 32 is sealed and rotatably installed within the L-shaped mounting opening, allowing the L-shaped mounting opening to support the rotating disk 32, enabling the motor to operate stably and drive the rotating disk 32, the retraction rod 33, and the base 34 to rotate synchronously via the output shaft. The rotating disk 32, installed within the L-shaped mounting opening, is connected to the base 34 via a connecting rod, thus allowing the rotating disk 32 to support and drive the base 34 to rotate synchronously.

[0058] like Figures 4 to 8As shown, a connecting plate 4 is hinged between the working tank 21 and the replacement tank 22. A hinge shaft 41 is hinged inside the connecting plate 4, and both ends of the hinge shaft 41 are respectively hinged to the inner wall of the negative pressure stabilizing tank 2. This allows the working tank 21 or the replacement tank 22 to operate intermittently, i.e., one of the working tanks 21 or the replacement tank 22 is filled with municipal water and is in the working state, while the other is empty and is in the stopped state. This makes the working tank 21 or the replacement tank 22 filled with municipal water heavier than the other working tank 21 or the replacement tank 22 that is not filled with municipal water. As a result, the working tank 21 or the replacement tank 22 filled with municipal water sinks, and through the hinged connecting plate 4 and the hinge shaft 41, it drives the other working tank 21 or the replacement tank 22 that is not filled with municipal water to rise.

[0059] It should be noted that the inlet and outlet of the working tank 21 or the replacement tank 22 are both made of corrugated pipes with telescopic function.

[0060] The tops of the working tank 21 and the replacement tank 22, as well as the inner wall of the negative pressure stabilizing tank 2, are all equipped with mutually cooperating electrode sensing plates. When the water consumption at the user end is at a low peak and the working tank 21 and the replacement tank 22 are in an intermittent rotating working state, the working tank 21 or the replacement tank 22 without municipal water is driven to rise by the working tank 21 or the replacement tank 22 with municipal water. The top of the working tank 21 or the replacement tank 22 without municipal water can come into close contact with the inner wall of the negative pressure stabilizing tank 2, so that the energized plate on the top of the working tank 21 or the replacement tank 22 and the motor sensing plate on the inner wall of the negative pressure stabilizing tank 2 come into close contact.

[0061] When the water consumption at the user end is at a low peak and the working tank 21 and the replacement tank 22 are in an intermittent alternating working state, the electrode sensing plates on the top of the working tank 21 or the replacement tank 22 and the inner wall of the negative pressure stabilizing tank 2 are in contact, which can transmit electrical signals to the microcomputer frequency converter control cabinet. The microcomputer frequency converter control cabinet then starts the rotating motor 31 and the retracting rod 33, so that the rotating motor 31 drives the rotating disk 32 and the base 34 to rotate synchronously. The retracting rod 33 can also extend synchronously, so that the base 34 can respectively adhere to the inner wall of the working tank 21 and the replacement tank 22 and adhere to the surface of the filter screen 25. During the rotation, the surface of the filter screen 25 is cleaned by the brush 35. Thus, when the working tank 21 and the replacement tank 22 are in intermittent alternating working state, the working tank 21 or the replacement tank 22 that is not filled with municipal water can automatically drive the other working tank 21 or the replacement tank 22 that is not filled with municipal water to clean the filter screen 25.

[0062] It should be noted that during peak water consumption periods at the user end, both the working tank 21 and the replacement tank 22 are in operation, supplying water to the user end. At the same time, the volume of municipal water stored inside the working tank 21 and the replacement tank 22 changes due to the water supply, causing one of the working tank 21 or the replacement tank 22 to rise or fall. The top of the rising working tank 21 or the replacement tank 22 comes into contact with the electrode sensing plate on the inner wall of the negative pressure stabilizing tank 2. However, since both the working tank 21 and the replacement tank 22 are in operation, the microcomputer frequency converter control cabinet will not control the rotating motor 31 to start.

[0063] To reiterate, when the working tank 21 and the replacement tank 22 switch from the stopped state to the working state, the retraction rod 33 retracts to disengage the base 34 from the filter screen 25 and the inner wall of the working tank 21 and the replacement tank 22, so as to avoid affecting or contaminating the working tank 21 or the replacement tank 22.

[0064] like Figures 4 to 8 As shown, the connecting plate 4 has concave structures on both sides. The concave connecting plate 4 is tangent to the outer circumferential surface of the working tank 21 or the replacement tank 22. Two coaxial rotating shafts 42 are rotatably mounted on the tangential surfaces of the connecting plate 4, and the two rotating shafts 42 are perpendicular to the axis of the working tank 21 or the replacement tank 22. The other side of the rotating shafts 42 is rotatably mounted on the outer circumferential surface of the working tank 21 or the replacement tank 22. When the working tank 21 or the replacement tank 22 moves, the stability can be improved by the connecting plate 4 and the two rotating shafts 42, so as to avoid the working tank 21 or the replacement tank 22 shaking during movement.

[0065] like Figures 4 to 8 As shown, multiple connecting plates 4 and hinge shafts 41 are arranged along the axial direction of the negative pressure stabilizing tank 2. When the working tank 21 or replacement tank 22 containing municipal water drives another working tank 21 or replacement tank 22 that does not contain municipal water to rise, the multiple connecting plates 4 and hinge shafts 41 can improve its stability and prevent the working tank 21 and replacement tank 22 from shaking when moving, so that the intermittently rotating working tank 21 and replacement tank 22 can move relatively stably.

[0066] like Figures 4 to 8 As shown, a stabilizing arm is bolted to the inside of the pressure-free flow stabilizing tank 2. A stabilizing wall 43 is located between the working tank 21 and the replacement tank 22 and is tangent to the inside of the pressure-free flow stabilizing tank 2. Multiple hinge shafts 41 are hinged and pass through the stabilizing arm to connect to the pressure-free flow stabilizing tank 2. The stabilizing wall 43 can further improve the stability when the working tank 21 or the replacement tank 22 moves relative to each other.

[0067] Example 2: Mid-rise and high-rise residential buildings are typically 7-10 stories high. Since they have fewer buildings and fewer residents than high-rise buildings, the water pump flow rate is set at 100m³ / h. 3 The pump has a flow rate of 100 mm / h, a head of 100 mm, a power of 60 kW, a diameter of DN50, and a rotational speed of 2500 r / min. Both the working tank and the replacement tank are made of 5 mm thick SUS304 stainless steel. The working tank 21 and the replacement tank 22 have a diameter of 1000 mm, a length of 2000 mm, a pressure resistance of 1 MPa, and a total volume of 1.4 m³. 3 The minimum input or output flow rate is 45m³ / h. 3 / h, maximum input or output flow rate is 1501.4m³ / h. 3 / h.

[0068] During peak water usage periods at the user end, both the working tank 21 and the replacement tank 22 are in operation. The microcomputer frequency converter control cabinet controls all water pumps of the water pump unit 1 to start, but the rotating motor 31 will not be started. When municipal water enters the working tank 21 or the replacement tank 22, it comes into contact with the filter screen 25, thereby filtering impurities and sediments contained in the municipal water during transportation to ensure the quality of water at the user end. At the same time as the municipal water comes into contact with the filter screen 25, the filter screen 25 can vibrate through the vibration points 37 of the polyurethane elastomer material on the surface of the fixing ring 26, so as to avoid the formation of a water film on the surface of the filter screen 25 due to water tension, thereby avoiding affecting the inflow of municipal water and ensuring a stable supply of water to the user end during peak water usage periods.

[0069] During off-peak water usage periods at the user end, the working tank 21 and the replacement tank 22 are in an intermittent alternation state. One of the working tank 21 or the replacement tank 22, which is filled with municipal water and is in a working state, sinks. At the same time as sinking, the other working tank 21 or the replacement tank 22, which is not filled with water and is in a stationary state, is driven to rise through the connecting plate 4 and the hinge shaft 41 that is hinged to the support arm and the inner wall of the negative pressure stabilizing tank 2. The top of the rising working tank 21 or the replacement tank 22 comes into contact with the electrode induction plate on the inner wall of the negative pressure stabilizing tank 2, thereby forming a current path and transmitting an electrical signal to the microcomputer frequency converter control cabinet. Then, the microcomputer frequency converter control cabinet controls the rotating motor 31 and the telescopic rod to start working.

[0070] When the microcomputer frequency converter control cabinet starts the rotating motor 31 and the retracting rod 33, the output shaft of the rotating motor 31 drives the rotating disk 32 to rotate synchronously, and the rotating disk 32 drives the retracting rod 33 and the base 34 on the other side to rotate synchronously. While the base 34 is rotating, the retracting rod 33 extends so that the base 34 first fits against the working tank 21 or the replacement tank 22 and then gradually fits against the filter screen 25.

[0071] When the substrate 34 is attached to the filter screen 25, the substrate 34 rotates continuously via the rotating motor 31, allowing the brushes 35 arranged in a fan-shaped structure on the surface of the substrate 34 to clean the impurities and sediments filtered by the filter screen 25. Simultaneously, the vibration points 37 on the surface of the substrate 34 cause the filter screen 25 to vibrate during the rotation of the substrate 34, enabling the brushes 35 to clean the filter screen 25 more thoroughly. While the brushes 35 are cleaning the filter screen 25, the suction port, via an externally connected electric air pump, draws the impurities and sediments cleaned by the brushes 35 into the cavity, and collects them through the filter bag, so that operators only need to clean the filter bag periodically.

[0072] When the microcomputer frequency converter control cabinet switches the working state of the working tank 21 or the replacement tank 22, the working tank 21 or the replacement tank 22 in the stopped state is switched to the working state; the retracting rod 33 retracts and the rotating motor 31 stops rotating, and the external electric air pump connected to the dust suction port stops working simultaneously, so that the substrate 34 detaches from the surface of the filter screen 25 and returns to its initial position; after the substrate 34 detaches from the filter screen 25, municipal water can be introduced; at the same time, another working tank 21 or replacement tank 22 that has switched from the working state to the stopped state repeats the above steps to perform filtration and cleaning.

[0073] The present invention is described using only the above embodiments, but the structure, arrangement, and connection relationships of the various components of the present invention can be changed accordingly.

Claims

1. An Internet-based smart secondary water supply system, comprising a microcomputer frequency converter control cabinet, a water pump unit (1), and a negative pressure stabilizing tank (2), characterized in that: The negative pressure stabilizing tank (2) is equipped with a working tank (21) and a replacement tank (22). Both the working tank (21) and the replacement tank (22) are open structures. The openings of the working tank (21) and the replacement tank (22) are fixedly equipped with multi-stage stepped filter screens (25) with progressively smaller cross-sectional areas. The inner wall of the negative pressure stabilizing tank (2) above the working tank (21) and the replacement tank (22) is rotatably equipped with a cleaning adsorption component (3). The cleaning adsorption component (3) is used to perform multi-stage vibration cleaning of impurities on the inner wall of the negative pressure stabilizing tank (2) and the surface of the filter screen (25) while cleaning. The cleaning adsorption assembly (3) includes a rotating motor (31), a rotating disk (32), a retractable rod (33), a base (34), and a brush (35). The rotating motor (31) is fixedly installed above the negative pressure stabilizing tank (2). The rotating disk (32) is fixedly installed coaxially with the output shaft of the rotating motor (31). At least one retractable rod (33) is fixedly installed on the other side of the rotating disk (32). The base (34) is fixedly installed at the other end of the retractable rod (33). The base (34) has a stepped structure. The brush (35) is fixedly installed on the surface of the base (34). The base (34) has a cavity inside and is connected to an external electric air pump through a connecting pipe. The base (34) has multiple suction ports on its surface. The brushes (35) on the outer circumferential surface of the substrate (34) are arranged in a fan-shaped structure, and vibration points (37) arranged in a fan-shaped structure are fixedly provided on the outer circumferential surface of the substrate (34).

2. The Internet-based smart secondary water supply system according to claim 1, characterized in that: The working tank (21) and the replacement tank (22) are fixedly installed with a fixing ring (26) on their side walls. The fixing ring (26) is fixedly provided with a protrusion (261) on its surface. The protrusion (261) is made of polyurethane elastomer material. A filter screen (25) is fixedly installed on the surface of the protrusion (261).

3. The Internet-based smart secondary water supply system according to claim 1, characterized in that: Multiple vibration points (37) are fixedly installed on the surface of the substrate (34) and are arranged in a mirror image along the axis. The brush (35) fixedly installed on the surface of the substrate (34) is adjacent to the vibration points (37) and is also arranged in a mirror image along the axis.

4. The Internet-based smart secondary water supply system according to claim 1, characterized in that: The surface of the pressure-free flow stabilizing tank (2) is provided with an L-shaped mounting opening, and the rotating disk (32) is sealed and rotated inside the L-shaped mounting opening.

5. The Internet-based smart secondary water supply system according to claim 1, characterized in that: A connecting plate (4) is hinged between the working tank (21) and the replacement tank (22). A hinge shaft (41) is hinged inside the connecting plate (4). Both ends of the hinge shaft (41) are respectively hinged to the inner wall of the negative pressure stabilizing tank (2).

6. The Internet-based smart secondary water supply system according to claim 5, characterized in that: The connecting plate (4) has concave structures on both sides. The concave connecting plate (4) is tangent to the outer circumferential surface of the working tank (21) or the replacement tank (22). A coaxial rotating shaft (42) is rotatably mounted on the tangent surface of the connecting plate (4). The other side of the rotating shaft (42) is rotatably mounted on the outer circumferential surface of the working tank (21) or the replacement tank (22).

7. The Internet-based smart secondary water supply system according to claim 5, characterized in that: Multiple connecting plates (4) and hinge shafts (41) are provided along the axial direction of the negative pressure stabilizing tank (2).

8. A smart secondary water supply system based on the Internet according to claim 5, characterized in that: A stabilizing arm is fixedly installed inside the negative pressure stabilizing tank (2), and multiple hinge shafts (41) are hinged and pass through the stabilizing arm to connect to the negative pressure stabilizing tank (2).

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