Branch pipe circulating pipeline direct drinking water intelligent metering system

Abstract

The utility model relates to the technical field of direct drinking water, and provides a branch pipe circulating pipeline direct drinking water intelligent metering system which comprises a water supply branch pipe, a water return branch pipe, an intelligent water taking terminal, a central control room and a user terminal. The water supply branch pipes are respectively connected with the water supply main pipe and the intelligent water taking terminals; valves and intelligent water meters are arranged on the water supply branch pipes; the water return branch pipe is respectively connected with the water return main pipe and the intelligent water taking terminal, and a valve is arranged on the water return branch pipe; the intelligent water taking terminal is used for switching a water using state and a water returning state; the central control room is used for controlling the opening and closing states of the two valves; and the user terminal reads the reading of the intelligent water meter through the central control room so as to obtain water consumption data and return water amount data. The system is simple in configuration, convenient for monitoring and counting the water consumption condition, mastering the circulation state of the branch pipe in real time and improving the water consumption efficiency, the use process is transparent and open, the data can be checked and traced, the water consumption doubt of a user is effectively reduced, and the use efficiency of the pipeline direct drinking water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of direct drinking water, in particular to an intelligent metering system for direct drinking water in a branch circulation pipeline. Background Art

[0002] With the development of piped drinking water, more and more residences have begun to use piped drinking water systems. The kitchens of many residents are far away from the pipe wells. However, according to Article 5.0.13 of the "Technical Code for Piped Drinking Water Systems in Buildings and Communities" CJJ / T110-2017, the length of non-circulating branch pipes should not be greater than 6m. Therefore, when the length of the branch pipe is greater than 6m, branch pipe circulation needs to be set up.

[0003] At present, the hygienic safety of drinking water used in piped drinking water systems has always been a focus of attention. Since users cannot confirm the effectiveness of branch pipe circulation and intuitively obtain the return water flow of the branch pipe where the user is located, they question the controllability of the safe operation of the branch pipe circulation system and the supervisability of water quality and hygiene. As a result, the utilization rate of piped drinking water systems in many communities or public places is low after they are built, resulting in great waste. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned prior art, the utility model provides a branch circulation pipeline direct drinking water intelligent metering system, which solves the technical problem in the prior art that users are unable to obtain the return water flow of the branch pipe in the direct drinking water system and confirm the effectiveness of the branch pipe circulation, and thus cannot confirm the safety of its operation, resulting in low utilization rate of the direct drinking water system.

[0005] The utility model provides a branch pipe circulation pipeline direct drinking water intelligent metering system, including a water supply branch pipe, a return branch pipe, an intelligent water intake terminal, a central control room and a user terminal;

[0006] The two ends of the water supply branch pipe are respectively connected to the water supply main pipe and the intelligent water intake terminal, and the water supply branch pipe is provided with a water supply pipeline valve and an intelligent water meter;

[0007] The two ends of the water return branch pipe are respectively connected to the water return main pipe and the intelligent water intake terminal, and the water return branch pipe is provided with a water return pipe valve;

[0008] The intelligent water intake terminal switches the water use state and the water return state based on the user's control;

[0009] The central control room is connected to the water supply pipeline valve and the water return pipeline valve respectively to control the opening and closing states of the water supply pipeline valve and the water return pipeline valve;

[0010] The central control room is respectively connected to the smart water meter and the user terminal in communication, and the smart water meter is also connected to the smart water intake terminal in communication. The user terminal reads the reading of the smart water meter through the central control room to obtain the user's water consumption data and return water volume data.

[0011] Optionally, the intelligent water intake terminal comprises a water tap, an outer shell and a handle;

[0012] The outer shell is provided with a spherical valve core, a water supply pipe, a return pipe and a water pipe, the spherical valve core is provided with a water supply port, a return port and a water port, the water supply port is connected to the water supply branch pipe through the water supply pipe, the return port is connected to the return branch pipe through the return pipe, and the water port is connected to the water tap through the water pipe;

[0013] An annular water flow channel is provided in the spherical valve core, and the water flow angle of the annular water flow channel is 120°;

[0014] The handle is in transmission connection with the annular water flow channel, and the annular water flow channel rotates synchronously in the spherical valve core based on the rotation of the handle.

[0015] Optionally, the intelligent water-intake terminal further comprises a handle fixing disk and a handle rotating disk, and the intelligent water-intake terminal is further connected to an alarm, and the alarm is used to obtain the rotation state between the handle rotating disk and the handle fixing disk;

[0016] The handle fixing plate is fixed to the outer surface of the outer shell, the handle is connected to the handle rotating plate, and the handle rotating plate is rotatably connected to the handle fixing plate;

[0017] The handle fixing plate is provided with a water use indication position and a water return indication position, and the handle rotating plate is provided with a pointer;

[0018] When the handle rotates and the pointer points to the water use indication position or the water return indication position, the handle rotating disk and the handle fixing disk are engaged with the key teeth at the water use indication position or the water return indication position;

[0019] When the handle rotates and the pointer does not point to the water usage indication position or the return water indication position within a preset time period, and the handle rotating disk and the handle fixed disk always maintain relative rotation so that no key tooth engagement occurs, the alarm emits a buzzer alarm sound.

[0020] Optionally, when the handle rotates and the pointer points to the water use indication position, the handle controls the first end of the annular water flow channel to be connected to the water supply pipe through the water supply port, and controls the second end of the annular water flow channel to be connected to the water pipe through the water use port;

[0021] When the handle rotates and the pointer points to the return water indication position, the handle controls the first end of the annular water flow channel to be connected to the water supply pipe through the water supply port, and controls the second end of the annular water flow channel to be connected to the return water pipe through the return water port.

[0022] Optionally, a water use limit slot is provided at the water use indication position, and a water return limit slot is provided at the water return indication position;

[0023] When the handle rotates and the pointer points to the water return indication position, the water return limit slot limits the handle;

[0024] When the handle rotates and the pointer points to the water use indication position, the water use limit slot limits the handle.

[0025] Optionally, the intelligent water intake terminal further includes a collar and a sealing ring;

[0026] The end of the water pipe connected to the water tap is provided with an external thread, the inner ring of the collar is provided with an internal thread, and the collar is threadedly connected to the water pipe;

[0027] The sealing ring is arranged in the sleeve ring and at the joint between the water pipe and the water tap.

[0028] Optionally, the handle comprises three support rods, and the angle between any two of the three support rods is 120°;

[0029] The positions of the three support rods correspond one by one to the positions of the water supply port, the water return port and the water use port in the spherical valve core.

[0030] Optionally, the smart water meter is also connected to an alarm device;

[0031] When the reading of the smart water meter indicates that the user's return water volume is within the preset return water reference range, the alarm device does not work, and the branch circulation pipeline direct drinking water smart metering system is in normal working state;

[0032] When the reading of the smart water meter indicates that the user's return water volume is outside the preset return water reference range, the alarm device generates and sends an alarm message, and the central control room controls the opening of the return water pipe valve to make the user's return water volume return to the preset return water reference range.

[0033] Optionally, when the user's return water volume is within a preset return water reference range, the smart water meter sends normal state information to the user terminal through the central control room;

[0034] When the user's return water volume is outside the preset return water reference range, the smart water meter sends warning status information to the user terminal through the central control room.

[0035] Optionally, when the reading of the smart water meter indicates that the user's water consumption exceeds a preset water consumption threshold, the central control room closes the water supply pipeline valve.

[0036] The utility model provides a branch pipe circulation pipeline direct drinking water intelligent metering system. Users can monitor the user's water consumption data and return water volume data in real time through a single intelligent water meter, effectively reducing the number of valves on the water supply branch pipe and the return water branch pipe. The system configuration is simple, which is convenient for users and managers to accurately monitor and count the water use situation; the intelligent water intake terminal can control the switching of water use status and return water status, improve water use efficiency and reduce waste. At the same time, the user can remotely control the return water flow rate, which is convenient for pipeline direct drinking water operation debugging and daily maintenance; the central control room is communicated with the intelligent water meter and the user terminal respectively to realize remote monitoring and management of the system, which is convenient for users to grasp the circulation status of the water supply branch pipe and the return water branch pipe in real time. The use process is transparent and open, and the data can be checked and traced, which effectively reduces users' water use concerns and improves the use efficiency of pipeline direct drinking water.

[0037] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0038] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of the overall structure of a branch pipe circulation pipeline direct drinking water intelligent metering system in an embodiment provided in the present application;

[0041] Figure 2 A schematic diagram of the overall structure of an intelligent water intake terminal in a branch pipe circulation pipeline direct drinking water intelligent metering system in an embodiment provided in the present application;

[0042] Figure 3 A schematic diagram of the internal structure of an intelligent water intake terminal in a branch pipe circulation pipeline direct drinking water intelligent metering system in a water return state in an embodiment provided in the present application;

[0043] Figure 4 A schematic diagram of the internal structure of an intelligent water intake terminal in a branch pipe circulation pipeline direct drinking water intelligent metering system in an embodiment provided in the present application when the intelligent water intake terminal is in a water use state;

[0044] Figure 5 A schematic diagram of the pointer position of the intelligent water intake terminal in the branch pipe circulation pipeline direct drinking water intelligent metering system in an embodiment provided by the present application when the intelligent water intake terminal is in the water return state;

[0045] Figure 6 A schematic diagram of the pointer position of an intelligent water intake terminal in a branch pipe circulation pipeline direct drinking water intelligent metering system in an embodiment provided in the present application is provided when the terminal is in a water use state.

[0046] In the figure:

[0047] 1. Water supply branch pipe; 101. Water supply pipeline valve; 102. Smart water meter;

[0048] 2. Return branch pipe; 201. Return pipe valve;

[0049] 3. Intelligent water terminal; 301. Water tap; 302. Outer shell; 3021. Ball valve core; 3022. Annular water flow channel; 3023. Water supply pipe; 3024. Return pipe; 3025. Water pipe; 3026. Ring; 3027. Sealing ring; 303. Handle; 3031. Handle fixing plate; 30311. Return water indication position; 30312. Water indication position; 3032. Handle rotating plate; 3033. Support rod; 304. Alarm;

[0050] 4. Central control room;

[0051] 5. User terminal;

[0052] 6. Water supply main;

[0053] 7. Return water main. DETAILED DESCRIPTION

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The utility model provides a branch pipe circulation pipeline direct drinking water intelligent metering system, such as Figure 1 As shown, it includes a water supply branch pipe 1, a return water branch pipe 2, an intelligent water intake terminal 3, a central control room 4 and a user terminal 5; the two ends of the water supply branch pipe 1 are respectively connected to the water supply main pipe 6 and the intelligent water intake terminal 3, and the water supply branch pipe 1 is provided with a water supply pipeline valve 101 and an intelligent water meter 102; the two ends of the return water branch pipe 2 are respectively connected to the return water main pipe 7 and the intelligent water intake terminal 3, and the return water branch pipe 2 is provided with a return water pipeline valve 201; the intelligent water intake terminal 3 switches the water use state and the return water state based on the user's control; the central control room 4 is respectively connected to the water supply pipeline valve 101 and the return water pipeline valve 201 to control the opening and closing states of the water supply pipeline valve 101 and the return water pipeline valve 201; the central control room 4 is respectively connected to the intelligent water meter 102 and the user terminal 5 in communication, and the intelligent water meter 102 is also connected to the intelligent water intake terminal 3 in communication, and the user terminal 5 reads the reading of the intelligent water meter 102 through the central control room 4 to obtain the user's water consumption data and return water volume data.

[0058] Among them, the water supply pipe valve 101 on the water supply branch pipe 1 is a solenoid valve, and its switch state is controlled by the central control room 4. The return pipe valve 201 on the return branch pipe 2 is an electric regulating valve, and its valve opening is controlled by the central control room 4.

[0059] The utility model provides a branch pipe circulation pipeline direct drinking water intelligent metering system. The user can monitor the user's water consumption data and return water volume data in real time through a single intelligent water meter 102, effectively reducing the number of valves on the water supply branch pipe 1 and the return water branch pipe 2. The system configuration is simple, which is convenient for users and managers to accurately monitor and count the water use situation; the intelligent water intake terminal 3 can control the switching of water use status and return water status, improve water use efficiency, and reduce waste. At the same time, the user can remotely control the return water flow, which is convenient for pipeline direct drinking water operation debugging and daily maintenance; the central control room 4 is communicated with the intelligent water meter 102 and the user terminal 5 respectively to realize remote monitoring and management of the system, which is convenient for users to grasp the circulation status of the water supply branch pipe 1 and the return water branch pipe 2 in real time. The use process is transparent and open, and the data can be checked and traced, which effectively reduces the user's water use concerns and improves the use efficiency of pipeline direct drinking water.

[0060] Specifically, in the above embodiment, if Figures 2 to 4 As shown, the intelligent water intake terminal 3 includes a faucet 301, an outer shell 302 and a handle 303; a spherical valve core 3021, a water supply pipe 3023, a return pipe 3024 and a water pipe 3025 are arranged in the outer shell 302, and the spherical valve core 3021 is provided with a water supply port, a return port and a water port. The water supply port is connected to the water supply branch pipe 1 through the water supply pipe 3023, the return port is connected to the return branch pipe 2 through the return pipe 3024, and the water port is connected to the faucet 301 through the water pipe 3025; an annular water flow channel 3022 is opened in the spherical valve core 3021, and the water flow angle of the annular water flow channel 3022 is 120°; the handle 303 is transmission-connected to the annular water flow channel 3022, and the annular water flow channel 3022 rotates synchronously in the spherical valve core 3021 based on the rotation of the handle 303.

[0061] In this embodiment, if Figure 2 As shown, the overall arrangement of the intelligent water terminal 3 is similar to that of the faucets commonly used by existing residents. The user controls the opening and closing of the water flow by operating the handle 303, thereby reducing the learning cost of the user to use the intelligent water terminal 3; and a spherical valve core 3021 is specifically arranged inside the outer shell 302, and the spherical valve core 3021 is specifically a three-way valve body, which is provided with three interfaces, such as Figure 3 and Figure 4As shown, the water supply port is always connected to the water supply branch pipe 1 through the water supply pipe 3023, and the user controls the annular water flow channel 3022 to rotate in the spherical valve core 3021 through the operating handle 303, and the other end of the annular water flow channel 3022 is connected to the return water port or the water port to realize the water supply to the faucet 301 or to connect to the return water branch pipe 2 for circulation. Specifically, the present application adopts the structural form of the spherical valve core 3021 with the 120° annular water flow channel 3022 to realize the switching of the water supply state and the return water state. In addition, it can also be realized by pushing and pulling the cylindrical valve core, or by combining a faucet 301 with a two-position three-way solenoid valve; at the same time, in addition to being directly connected to the faucet 301, the water pipe 3025 can also be connected to other water-using equipment or water points.

[0062] Specifically, the smart water meter 102 is communicatively connected with the smart water intake terminal 3. When the handle 303 is turned on, the water use passage in the spherical valve core 3021 is opened and a water consumption metering signal is returned to the smart water meter 102; when the handle 303 is closed, the return water passage in the spherical valve core 3021 is opened and a return water consumption metering signal is returned to the smart water meter 102; correspondingly, the smart water meter 102 is provided with two accounts, which respectively accumulate water consumption and return water consumption.

[0063] Furthermore, the intelligent water-intake terminal 3 also includes a handle fixing disk 3031 and a handle rotating disk 3032. The intelligent water-intake terminal 3 is also connected to an alarm 304, and the alarm 304 is used to obtain the rotation state between the handle rotating disk 3032 and the handle fixing disk 3031; the handle fixing disk 3031 is fixed to the outer surface of the outer shell 302, the handle 303 is connected to the handle rotating disk 3032, and the handle rotating disk 3032 is rotatably connected to the handle fixing disk 3031; the handle fixing disk 3031 is provided with a water use indication position 30312 and a return water indication position 30311, and the handle rotating disk 3032 is connected to the handle fixing disk 3031. A pointer is provided on the disk 3032; when the handle 303 rotates and the pointer points to the water use indication position 30312 or the return water indication position 30311, the handle rotating disk 3032 and the handle fixed disk 3031 engage with the key teeth at the water use indication position 30312 or the return water indication position 30311; when the handle 303 rotates and the pointer does not point to the water use indication position 30312 or the return water indication position 30311 within a preset time period, the handle rotating disk 3032 and the handle fixed disk 3031 always maintain relative rotation, resulting in no key tooth engagement, and the alarm 304 emits a buzzer alarm sound.

[0064] In this embodiment, by setting the water use indication position 30312 and the water return indication position 30311 on the handle fixing plate 3031 and the pointer on the handle rotating plate 3032, the user can accurately control the handle 303 and clearly know the current state of the intelligent water collection terminal 3; the handle rotating plate 3032 and the handle fixing plate 3031 are integrally connected by rotation, and key teeth are set at the water use indication position 30312 and the water return indication position 30311, so that the handle rotating plate 3032 and the handle fixing plate 3031 are connected at the above Key teeth are engaged at the two positions, and a slight prompt sound is emitted at the moment the key teeth of the handle rotating disk 3032 are engaged with the handle fixed disk 3031, so as to remind the user that the smart water extraction terminal 3 is already in the water use state or the water return state, thereby avoiding user misoperation and improving the user's operating experience and convenience; and when the user does not point the pointer to the water use indication position 30312 or the water return indication position 30311 within the preset time period, the alarm 304 will emit a buzzer alarm sound to remind the user to check the water extraction status, which helps to improve the safety of use.

[0065] Among them, the return water indication position 30311 can be set to red, and the water use indication position 30312 can be set to blue to distinguish them.

[0066] Furthermore, when the handle 303 rotates and the pointer points to the water use indication position 30312, the handle 303 controls the first end of the annular water flow channel 3022 to be connected to the water supply pipe 3023 through the water supply port, and controls the second end of the annular water flow channel 3022 to be connected to the water pipe 3025 through the water use port; when the handle 303 rotates and the pointer points to the return water indication position 30311, the handle 303 controls the first end of the annular water flow channel 3022 to be connected to the water supply pipe 3023 through the water supply port, and controls the second end of the annular water flow channel 3022 to be connected to the return water pipe 3024 through the return water port.

[0067] In this embodiment, the user rotates the handle 303 to control the position of the annular water flow channel 3022 in the spherical valve core 3021. The handle 303 and the annular water flow channel 3022 are connected by a conventional mechanical structure. The present application does not further limit the mechanical structure between the two. At the same time, the handle 303 cooperates with the water use indication position 30312 and the return water indication position 30311 set on the handle fixing plate 3031 and the pointer on the handle rotating plate 3032. Figure 5 As shown, when the pointer points to the water return indication position 30311, the water flows sequentially through the water supply port, the annular water flow channel 3022 and the water return port to connect to the water return branch pipe 2, providing a water return function; Figure 6As shown, when the pointer points to the water use indication position 30312, the two ends of the annular water flow channel 3022 are respectively connected to the water supply port and the water use port, and the water flows smoothly through the water supply port, the annular water flow channel 3022 and the water use port to connect to the faucet 301, providing a water use function and realizing the conversion of water flow in different states; the state switching method of the present application is simple and convenient, avoiding the need for additional valves or mechanical devices to control the direction of water flow, reducing system complexity and maintenance costs, and by precisely controlling the direction of water flow, avoiding the waste of water resources when it is not needed, which helps to save water resources and improve the efficiency of water resource utilization.

[0068] Furthermore, a water use limit slot is provided at the water use indication position 30312, and a return water limit slot is provided at the return water indication position 30311; when the handle 303 rotates and the pointer points to the return water indication position 30311, the return water limit slot limits the handle 303; when the handle 303 rotates and the pointer points to the water use indication position 30312, the water use limit slot limits the handle 303.

[0069] In this embodiment, the handle 303 is limited by the water use limit slot and the return water limit slot, which can ensure that the user stops rotating the handle 303 at two specified positions, avoiding unnecessary water waste or other problems caused by excessive operation; specifically, when the pointer reaches the water use or return water indication position, the handle 303 will be limited, thereby ensuring that one end of the annular water flow channel 3022 can be accurately aligned with the water supply port, and the other end can be accurately aligned with the water use port or the return water port, so as to keep the annular water flow channel 3022 in the correct working state, and the annular water flow channel 3022 completely overlaps with the water use pipe 3025 or the return water pipe 3024, thereby ensuring the stability and reliability of the system; the setting of the limit slot can help the user accurately grasp the position of the handle 303, simplify the operating process, improve the user experience and reduce the possibility of misoperation, and also avoid the handle 303 from being damaged by excessive force, thereby extending the service life of the system.

[0070] Specifically, in the above embodiment, the intelligent water intake terminal 3 also includes a ring 3026 and a sealing ring 3027; an end of the water pipe 3025 connected to the water faucet 301 is provided with an external thread, and the inner circle of the ring 3026 is provided with an internal thread, and the ring 3026 is threadedly connected to the water pipe 3025; the sealing ring 3027 is arranged in the ring 3026 and is arranged at the joint between the water pipe 3025 and the water faucet 301.

[0071] In this embodiment, the sealing ring 3027 in the ring 3026 is arranged at the joint between the water pipe 3025 and the water faucet 301, which effectively prevents water leakage, improves the sealing of the system, ensures that there will be no leakage during the water use process, and keeps the water flow smooth; the inner ring of the ring 3026 is provided with an internal thread, which can be easily connected to the water pipe 3025 and the water faucet 301 through threads. On the one hand, it is easy to disassemble and install when maintenance or replacement is required, which improves the convenience of maintenance. On the other hand, it can also realize 360° rotation of the water faucet 301, making it more flexible for users to use; the setting of the sealing ring 3027 can effectively prevent scale, impurities, etc. from entering the connection, extend the service life of the connection parts, and reduce damage caused by scale blockage or leakage.

[0072] Specifically, in the above embodiment, the handle 303 includes three support rods 3033, and the angle between the three support rods 3033 is 120°; the positions of the three support rods 3033 correspond to the positions of the water supply port, the return port and the water use port in the spherical valve core 3021 respectively.

[0073] In this embodiment, since the positions of the three support rods 3033 correspond to different ports in the spherical valve core 3021, when the user rotates and adjusts the handle 303, the user can intuitively understand the status of each port, accurately judge the connection status of the annular water flow channel 3022 and each port, achieve precise control of the water flow channel, and improve safety of use; at the same time, through the 120° angle design between the support rods 3033, the stability of the handle 303 structure can be maintained, the comfort of using the handle 303 is increased, and the handle 303 is more balanced and stable during the rotation process, thereby improving the accuracy and stability of the operation.

[0074] Specifically, in the above embodiment, the smart water meter 102 is also connected to an alarm device; when the reading of the smart water meter 102 indicates that the user's return water volume is within the preset return water reference range, the alarm device does not work, and the branch circulation pipeline direct drinking water intelligent metering system is in a normal working state; when the reading of the smart water meter 102 indicates that the user's return water volume is outside the preset return water reference range, the alarm device generates and sends an alarm message, and the central control room 4 controls the opening of the return water pipe valve 201 to make the user's return water volume return to within the preset return water reference range.

[0075] In this embodiment, a preset water return reference range is pre-set in the smart water meter 102, and the state of the branch pipe circulation is determined by the water return reference value. For example, a numerical range of 70%-130% of the preset return water reference value is set as the preset return water reference range, the return water is normal, and the circulation state of the branch pipe is normal, and the alarm device does not alarm at this time; when the user's return water volume is outside the preset return water reference range, that is, the user's return water volume is less than 70% of the preset return water reference value or greater than 130% of the preset return water reference value, it means that the return water volume is abnormal, and there is a situation below the reference range or above the reference range. The alarm device flashes, so that the central control room 4 controls the opening of the return water pipe valve 201 to make the user's return water volume return to the preset return water reference range; and in extreme cases, when the user's return water volume is less than 50% of the preset return water reference value or greater than 150% of the preset return water reference value, it means that the return water volume is seriously abnormal, and the alarm device promptly issues an alarm prompt sound, so that the central control room 4 controls the opening of the return water pipe valve 201 to make the user's return water volume return to the normal numerical range of the preset return water reference value. The present application can avoid the waste of water resources caused by the deviation of the user's return water volume from the preset reference value by timely alarm and adjustment of the return pipe valve 201, ensure the effective use of water resources, and generate different forms of alarm information according to the degree of deviation between the return water volume and the preset return water reference value, so as to promptly remind the staff of the central control room 4 at the first time and improve the stability and reliability of the system.

[0076] In one embodiment, the alarm device and the alarm 304 may be two different alarm components that perform different alarm functions, while in another embodiment, the alarm device and the alarm 304 may be the same alarm component to achieve a collection of alarm functions and simplify the system structure.

[0077] Furthermore, when the user's return water volume is within the preset return water reference range, the smart water meter 102 sends normal working status information to the user terminal 5 through the central control room 4; when the user's return water volume is outside the preset return water reference range, the smart water meter 102 sends warning status information to the user terminal 5 through the central control room 4.

[0078] Among them, the user terminal 5 is usually a mobile phone, and the user can obtain information through the corresponding app in the mobile phone. Specifically, the main page of the user app can display relevant information such as the water fee balance, water purification index, and the position of the handle 303. For example, the water fee balance of the user account can be displayed in real time based on the water flow data, and a red text reminder can be displayed when the fee is in arrears. The user-related information can also be registered with real name, and the payment and contact service center functions can be set. The corresponding service center app displays the location of the user's water terminal.

[0079] In this embodiment, the smart water meter 102 feeds back status information to the user terminal 5 based on the comparison between the user's return water volume and the preset return water reference range, that is, when the user's return water volume is within the preset return water reference range, the user terminal 5 receives the normal working status information sent by the smart water meter 102, usually in the form of a green text reminder, and when the user's return water volume is outside the preset return water reference range, the user terminal 5 receives the warning status information sent by the smart water meter 102, usually in the form of a yellow text reminder. In extreme cases, when the user's return water volume is 0, the user terminal 5 displays a red text reminder.

[0080] Specifically, in the above embodiment, when the reading of the smart water meter 102 indicates that the water consumption of the user exceeds the preset water consumption threshold, the central control room 4 closes the water supply pipeline valve 101 .

[0081] In this embodiment, in addition to being able to obtain the user's water consumption, the smart water meter 102 can also obtain the user's water consumption data. When the water consumption exceeds the preset water consumption threshold, the water supply pipeline valve 101 can be closed in time to effectively limit the user's water consumption exceeding the preset water consumption threshold, thereby saving water resources, reducing the possibility of waste, and promoting the rational use of water resources. Closing the water supply pipeline valve 101 can avoid the pressure and load on the water supply system caused by excessive water use, which helps to protect the normal operation of the water supply system and extend the service life of the equipment. Among them, the preset water consumption threshold value is adjustable, usually 2 cubic meters.

[0082] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An intelligent metering system for direct drinking water in branch circulation pipelines, characterized in that: It comprises a water supply branch pipe (1), a water return branch pipe (2), an intelligent water intake terminal (3), a central control room (4) and a user terminal (5); The two ends of the water supply branch pipe (1) are respectively connected to the water supply main pipe (6) and the intelligent water intake terminal (3), and the water supply branch pipe (1) is provided with a water supply pipeline valve (101) and an intelligent water meter (102); The two ends of the water return branch pipe (2) are respectively connected to the water return main pipe (7) and the intelligent water intake terminal (3), and a water return pipe valve (201) is provided on the water return branch pipe (2); The intelligent water intake terminal (3) switches between the water use state and the water return state based on the control of the user; The central control room (4) is connected to the water supply pipeline valve (101) and the water return pipeline valve (201) respectively to control the opening and closing states of the water supply pipeline valve (101) and the water return pipeline valve (201); The central control room (4) is respectively connected to the smart water meter (102) and the user terminal (5) in communication, and the smart water meter (102) is also connected to the smart water intake terminal (3). The user terminal (5) reads the reading of the smart water meter (102) through the central control room (4) to obtain the user's water consumption data and return water volume data.

2. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 1 is characterized in that: The intelligent water intake terminal (3) comprises a water tap (301), an outer shell (302) and a handle (303); The outer shell (302) is provided with a spherical valve core (3021), a water supply pipe (3023), a return pipe (3024) and a water pipe (3025); the spherical valve core (3021) is provided with a water supply port, a return port and a water port; the water supply port is connected to the water supply branch pipe (1) through the water supply pipe (3023); the return port is connected to the return pipe (2) through the return pipe (3024); and the water port is connected to the water tap (301) through the water pipe (3025); An annular water flow channel (3022) is provided in the spherical valve core (3021), and the water flow angle of the annular water flow channel (3022) is 120°; The handle (303) is transmission-connected to the annular water flow channel (3022), and the annular water flow channel (3022) rotates synchronously within the spherical valve core (3021) based on the rotation of the handle (303).

3. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 2 is characterized in that: The intelligent water-intake terminal (3) further comprises a handle fixing disk (3031) and a handle rotating disk (3032), and the intelligent water-intake terminal (3) is further connected to an alarm (304), and the alarm (304) is used to obtain the rotation state between the handle rotating disk (3032) and the handle fixing disk (3031); The handle fixing plate (3031) is fixed to the outer surface of the outer shell (302), the handle (303) is connected to the handle rotating plate (3032), and the handle rotating plate (3032) is rotationally connected to the handle fixing plate (3031); The handle fixing disk (3031) is provided with a water use indication position (30312) and a return water indication position (30311), and the handle rotating disk (3032) is provided with a pointer; When the handle (303) rotates and the pointer points to the water use indication position (30312) or the water return indication position (30311), the handle rotating disk (3032) and the handle fixing disk (3031) are key-engaged at the water use indication position (30312) or the water return indication position (30311); When the handle (303) rotates and the pointer does not point to the water use indication position (30312) or the return water indication position (30311) within a preset time period, and the handle rotating disk (3032) and the handle fixed disk (3031) always maintain relative rotation so that the key teeth are not engaged, the alarm (304) emits a buzzer alarm sound.

4. The intelligent metering system for direct drinking water from branch circulation pipelines according to claim 3 is characterized in that ； When the handle (303) rotates and the pointer points to the water use indication position (30312), the handle (303) controls the first end of the annular water flow channel (3022) to be connected to the water supply pipe (3023) through the water supply port, and controls the second end of the annular water flow channel (3022) to be connected to the water pipe (3025) through the water use port; When the handle (303) rotates and the pointer points to the return water indication position (30311), the handle (303) controls the first end of the annular water flow channel (3022) to be connected to the water supply pipe (3023) through the water supply port, and controls the second end of the annular water flow channel (3022) to be connected to the return water pipe (3024) through the return water port.

5. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 4 is characterized in that: The water use indication position (30312) is provided with a water use limit slot, and the return water indication position (30311) is provided with a return water limit slot; When the handle (303) rotates and the pointer points to the water return indication position (30311), the water return limit slot limits the handle (303); When the handle (303) rotates and the pointer points to the water use indication position (30312), the water use limit slot limits the handle (303).

6. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 2 is characterized in that: The intelligent water intake terminal (3) further comprises a collar (3026) and a sealing ring (3027); One end of the water pipe (3025) connected to the water tap (301) is provided with an external thread, the inner ring of the collar (3026) is provided with an internal thread, and the collar (3026) is threadedly connected to the water pipe (3025); The sealing ring (3027) is arranged inside the sleeve ring (3026) and is arranged at the joint between the water pipe (3025) and the water tap (301).

7. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 2 is characterized in that: The handle (303) comprises three support rods (3033), and the angle between any two of the three support rods (3033) is 120°; The positions of the three support rods (3033) correspond one-to-one to the positions of the water supply port, the water return port and the water use port in the spherical valve core (3021).

8. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 1 is characterized in that: The smart water meter (102) is also connected to an alarm device; When the reading of the intelligent water meter (102) indicates that the user's return water volume is within a preset return water reference range, the alarm device does not work, and the branch circulation pipeline direct drinking water intelligent metering system is in a normal working state; When the reading of the smart water meter (102) indicates that the user's return water volume is outside the preset return water reference range, the alarm device generates and sends an alarm message, and the central control room (4) controls the opening of the return water pipeline valve (201) to make the user's return water volume return to within the preset return water reference range.

9. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 8 is characterized in that: When the user's return water volume is within a preset return water reference range, the smart water meter (102) sends normal status information to the user terminal (5) through the central control room (4); When the user's return water volume is outside a preset return water reference range, the smart water meter (102) sends warning status information to the user terminal (5) through the central control room (4).

10. The intelligent metering system for direct drinking water in branch circulation pipelines according to claim 1 is characterized in that: When the reading of the smart water meter (102) indicates that the user's water consumption exceeds a preset water consumption threshold, the central control room (4) closes the water supply pipeline valve (101).

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