CN107676495B - A kind of valve system detecting water quality - Google Patents

A kind of valve system detecting water quality Download PDF

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Publication number
CN107676495B
CN107676495B CN201710859576.7A CN201710859576A CN107676495B CN 107676495 B CN107676495 B CN 107676495B CN 201710859576 A CN201710859576 A CN 201710859576A CN 107676495 B CN107676495 B CN 107676495B
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China
Prior art keywords
module
data
water quality
valve
output end
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Active
Application number
CN201710859576.7A
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Chinese (zh)
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CN107676495A (en
Inventor
胡启明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Rongda Valve Co Ltd
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Anhui Rongda Valve Co Ltd
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Priority to CN201710859576.7A priority Critical patent/CN107676495B/en
Publication of CN107676495A publication Critical patent/CN107676495A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0655Lift valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/36Valve members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/46Attachment of sealing rings
    • F16K1/465Attachment of sealing rings to the valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

Abstract

The invention discloses a kind of valve systems for detecting water quality, including top cover, the cap base is equipped with transparent outer cover, the transparent outer cover side is equipped with connector, the transparent outer cover bottom is equipped with valve body, display is equipped at the top of the top cover, the cap base side is equipped with voice portal, controller is equipped with inside the top cover, the controller side is equipped with GPS locator and the other side is equipped with speech recognition device, the present invention is made of sealing ring of shape memory alloy material, when being conducive to shut on valve, shape memory alloy material expands after being powered, blocking head is resisted fixed and plays sealing effect, by being equipped with eddy-current flowmeter, data computation module and display, be conducive to calculate and be used with water rate, and it is shown by display, people are facilitated to check, water quality is analyzed by system detection, facilitate water quality management personnel It checks and judges where water quality goes wrong, later period energy on-call maintenance cleaning can also be seen that water consumption, reasonable water supply.

Description

A kind of valve system detecting water quality
Technical field
The present invention relates to valve system field, in particular to a kind of valve system for detecting water quality.
Background technique
Valve is the control unit in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents adverse current, pressure stabilizing, shunting Or the functions such as overflow pressure relief, almost every household has valve, but after electromagnetic valve long-time use, the electromagnetic attraction of coil It can decline, lead to some seepy questions, in addition present water safety is the thing that everyone is concerned about, but people are to can't see Whether the quality of water is qualified, and whether water reaches the standard of safe water in water factory out and whether water meets on the way in pipeline transportation It can not can know that people the problems such as pollution, therefore, invent a kind of valve system of detection water quality to solve the above problems It is necessary to.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of valve system for detecting water quality Problem.
To achieve the above object, the invention provides the following technical scheme: it is a kind of detect water quality valve system, including top Lid, the cap base are equipped with transparent outer cover, and the transparent outer cover side is equipped with connector, and the transparent outer cover bottom is equipped with valve Body, the top cover top are equipped with display, and the cap base side is equipped with voice portal, is equipped with and controls inside the top cover Device, the controller side are equipped with GPS locator and the other side and are equipped with speech recognition device, and the is equipped with inside the transparent outer cover One iron core, the first iron core outside are equipped with coil, and the first spring is equipped at the top of first iron core and bottom is equipped with second Spring, the second spring bottom are equipped with the second iron core, are equipped with small coil, second mandrel bottom outside second iron core Equipped with blocking head, reset spring is equipped with inside the blocking head, the valve inner is equipped with valve seat, and the valve base inner wall is equipped with close Seal, the valve body side is equipped with water inlet pipe and the other side is equipped with outlet pipe, and the water inlet pipe is equipped with eddy-current flowmeter, institute Outlet pipe is stated equipped with conductivity sensor and temperature sensor, the temperature sensor is set to conductivity sensor side, The controller output end is equipped with monitoring module and data computation module, and the data computation module and controller output end are equipped with Display, the data computation module output end are equipped with monitoring module, and the monitoring module output end is equipped with data analysis and arrangement Module and controller, the data analysis and arrangement module input is equipped with database and output end is equipped with chart display module, The data analysis and arrangement module and chart display module output end are equipped with data memory module, the data memory module output End is equipped with local server, and the local server output end is equipped with cloud server and monitoring module, in which:
The monitoring module is used to monitor the information data for the valve detection for receiving each region;
The data analysis and arrangement module is sentenced for arranging data and comparing data and database Plays data Not Chu measurement result whether comply with standard;
The chart display module be used for by after data analysis and arrangement resume module data and text be organized into image and Table, and color in image;
The data memory module is stored for data;
The local server is sent for receiving the Data Concurrent detected every time to cloud server;
The cloud server is for synchronizing the data information detected every time;
The data computation module is used for the flow Data-Statistics of the water after vortex flow measurement and calculates and use water rate With.
Preferably, it is equipped with lamp ring on the outside of the display, the lamp ring includes substrate, and the substrate is equipped with multiple red LED lamp bead and blue led lamp bead, the blue led lamp bead and the setting of red LED lamp bead uniform intervals.
Preferably, the coil outer is equipped with thermal insulation board, is equipped with multiple LED light strip, the LED light outside the thermal insulation board Band includes green LED lamp band and red LED lamp band, and the red LED lamp band and green LED lamp band uniform intervals are arranged.
Preferably, rubber pad is equipped at the top of the valve seat.
Preferably, the temperature sensor model is set as QAE3010.010, and the conductivity sensor model is set as DDM-202, the eddy-current flowmeter model are set as LWGY, the temperature sensor, conductivity sensor and eddy-current flowmeter It is electrically connected with controller.
Preferably, the sealing ring is made of shape memory alloy material, and rubber sleeve is equipped with outside the sealing ring, described Sealing ring and controller are electrically connected.
Preferably, the blocking head includes cylindrical body and hemisphere, and the reset spring is set to inside cylindrical body, described Cylindrical body is made of rubber material, and the hemisphere is made of plastic material, the sealing ring and hemisphere mates.
Preferably, the chart display module includes character module, image module and color filling module.
Technical effect and advantage of the invention: by being equipped with coil and small coil, be conducive to coil and use electromagnetism for a long time Suction enables small coil working when reducing, and extends the service life of valve, by being equipped with reset spring, is conducive to flow inlet It tightly blocks, avoids leak, when coil and the reduction of small coil electromagnetism suction, blocking head can still block flow inlet, lead to Sealing ring is crossed to be made of shape memory alloy material, when being conducive to shut on valve, shape memory alloy material expands after being powered, Blocking head is resisted fixed and plays sealing effect, by being equipped with conductivity sensor and LED light strip, being conducive to measurement water quality is No qualification, if qualified display green light, unqualified display red light, by being equipped with eddy-current flowmeter, data computation module and display, Be conducive to calculate and be used with water rate, and shown by display, people is facilitated to check, saves water, it will by controller The information of measurement is sent to monitoring module, and monitoring module is shown after being determined data analysis by data analysis and arrangement module through image Show resume module, be then forwarded to local server, water quality management personnel is facilitated to check and judges where water quality goes wrong, Facilitate later period on-call maintenance to clear up, can also be seen that water consumption, reasonable water supply.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is loop construction schematic diagram of the invention.
Fig. 3 is display device structure schematic diagram of the invention.
Fig. 4 is system structure diagram of the invention.
In figure: 1 top cover, 2 transparent outer covers, 3 connectors, 4 valve bodies, 5 displays, 6 voice portals, 7 controllers, 8 GPS positionings Device, 9 speech recognition devices, 10 first iron cores, 11 coils, 12 thermal insulation boards, 13 lamp rings, 14 LED light strip, 15 first springs, 16 second Spring, 17 second iron cores, 18 small coils, 19 blocking heads, 20 reset springs, 21 valve seats, 22 sealing rings, 23 water inlet pipes, 24 water outlets Pipe, 25 eddy-current flowmeters, 26 conductivity sensors, 27 temperature sensors, 28 monitoring modules, 29 data analysis and arrangement modules, 30 Database, 31 chart display modules, 32 data memory modules, 33 local servers, 34 data computation modules, 35 cloud services Device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of valve system of detection water quality as shown in Figs 1-4, including top cover 1,1 bottom of top cover Portion is equipped with transparent outer cover 2, and 2 side of transparent outer cover is equipped with connector 3, and 2 bottom of transparent outer cover is equipped with valve body 4, the top Display 5 is equipped at the top of lid 1,1 bottom side of top cover is equipped with voice portal 6, is equipped with controller 7, institute inside the top cover 1 It states 7 side of controller and is equipped with speech recognition device 9 equipped with GPS locator 8 and the other side, GPS locator 8 can navigate to valve Position, speech recognition device 9 can identify the voices such as " valve is opened " and " valve pass ", facilitate voice control valve switch, described It is equipped with the first iron core 10 inside bright shell 2, coil 11 is equipped with outside first iron core 10, is equipped at the top of first iron core 10 First spring 15 and bottom are equipped with second spring 16, and 16 bottom of second spring is equipped with the second iron core 17, second iron Small coil 18 is equipped with outside core 17,17 bottom of the second iron core is equipped with blocking head 19, is equipped with and resets inside the blocking head 19 Spring 20, is equipped with valve seat 21 inside the valve body 4, and 21 inner wall of valve seat is equipped with sealing ring 22,4 side of valve body be equipped with into Water pipe 23 and the other side are equipped with outlet pipe 24, and the water inlet pipe 23 is equipped with eddy-current flowmeter 25, sets on the outlet pipe 24 There are conductivity sensor 26 and temperature sensor 27, the temperature sensor 27 is set to 26 side of conductivity sensor, described 7 output end of controller is equipped with monitoring module 28 and data computation module 34,7 output end of the data computation module 34 and controller Equipped with display 5,34 output end of data computation module is equipped with monitoring module 28, and 28 output end of monitoring module is equipped with number According to analysis and arrangement module 29 and controller 7,29 input terminal of data analysis and arrangement module is equipped with database 30 and output end Equipped with chart display module 31, the data analysis and arrangement module 29 and 31 output end of chart display module are equipped with data and store mould Block 32,32 output end of data memory module are equipped with local server 33, and 33 output end of local server is equipped with cloud Server 35 and monitoring module 28, in which:
The monitoring module 28 is used to monitor the information data for the valve detection for receiving each region;
The data analysis and arrangement module 29 is for arranging data and carrying out data and 30 Plays data of database pair Than determining whether measurement result complies with standard;
The chart display module 31 is used to treated the data of data analysis and arrangement module 29 and text being organized into figure Picture and table, and color in image;
The data memory module 32 is stored for data;
The local server 33 is sent for receiving the Data Concurrent detected every time to cloud server 35;
The cloud server 35 is for synchronizing the data information detected every time;
The data computation module 34 be used for eddy-current flowmeter 25 is surveyed after water flow Data-Statistics and calculate use Water rate is used.
Lamp ring 13 is equipped on the outside of the display 5, the lamp ring 13 includes substrate, and the substrate is equipped with multiple red LED lamp bead and blue led lamp bead, the blue led lamp bead and the setting of red LED lamp bead uniform intervals, it is normal to be conducive to valve Blue led lamp bead is bright when use, and when cutting off the water, red LED lamp bead is bright, and people is reminded to cut off the water, and is equipped with outside the coil 11 heat-insulated Plate 12, multiple LED light strip 14 are equipped with outside the thermal insulation board 12, and the LED light strip 14 includes green LED lamp band and red LED Light bar, the red LED lamp band and green LED lamp band uniform intervals are arranged, and thermal insulation board 12 is conducive to that LED light strip 14 is avoided to work Heat dissipation influences coil 11, and when water quality detection qualification, green LED lamp band work brilliant green light, water quality detection is unqualified, red LED Light bar azarin light.
It is equipped with rubber pad at the top of the valve seat 21, is conducive to seal, avoids leak, 27 model of the temperature sensor setting For QAE3010.010,26 model of conductivity sensor is set as DDM-202, and 25 model of eddy-current flowmeter is set as LWGY, the temperature sensor 27, conductivity sensor 26 and eddy-current flowmeter 25 are electrically connected with controller 7, are conducive to The information that conductivity sensor 26 and eddy-current flowmeter 25 detect is sent to monitoring module 28 by controller 7, by temperature sensing The temperature data that device 27 detects is shown by display 5, and the flow for the water that eddy-current flowmeter 25 detects is sent to data and is calculated Module 34, data computation module 34 calculate water consumption and are used with water rate, and are shown by display 5, and people is facilitated to check, save About use water.
The sealing ring 22 is made of shape memory alloy material, and rubber sleeve is equipped with outside the sealing ring 22, described close Seal 22 and controller 7 are electrically connected, and when being conducive to shut on valve, shape memory alloy material expands after being powered, and will be blocked First 19 resist fixed and play sealing effect, and the blocking head 19 includes cylindrical body and hemisphere, and the reset spring 20 is arranged Inside cylindrical body, the cylindrical body is made of rubber material, and the hemisphere is made of plastic material, is conducive to block head 19 Flexible and sealing effect is good, the sealing ring 22 and hemisphere mates, be conducive to sealing ring 22 block blocking head 19 with Gap between valve seat 21, avoids leak, and sealing effect is good.
The chart display module 31 includes character module, image module and color filling module, is conducive to each area The finish message of the valve detection in domain forms map at text, table and image, and by underproof valve location Fill Color Image, the pipeline distribution with water system compare, the place of easy-to-look-up water pollution, to handle pollution pipe in time Road.
Working principle of the present invention: when shutting valve, voice control valve switch, 7 control coil 11 of controller can be passed through It is powered, the first magnetic core 10 drives blocking head 19 to move down and blocks water inlet, when the first magnetic core 10 drives blocking head 19 to move down not When can block water inlet, eddy-current flowmeter 25 detects water flow, sends information to controller 7, and controller 7 controls small coil 18 work, small coil 18 drive the second iron core 17 to move down, and block blocking head 19 by water inlet, when valve is opened, vortex flow Meter 25 is measured with water flow, and is calculated water consumption by data computation module 34 and used with water rate, and aobvious by display 5 Showing, people is facilitated to check, saves water, temperature sensor 27 detects the temperature of water, also by 5 displays temperature numerical value of display, Data information after conductivity sensor 26 will test is sent to controller 7, information that controller 7 positions GPS locator 8, Data information after the information and conductivity sensor 26 that data computation module 34 calculates detect all is sent to monitoring module 28, supervises Control module 28 sends information to data analysis and arrangement module 29, and data analysis and arrangement module 29 is by the number in information and date library 30 According to comparing, conductivity is lower to illustrate that water is purer, to judge whether water quality is qualified and is sent to controller 7, if closing Lattice, controller 7 control that green LED lamp band is bright, if unqualified, it is bright to control red LED lamp band, and data analysis and arrangement module 29 will Information is sent to chart display module 31, chart display module 31 by the finish message of the valve detection of each region at text, Table and image, and by underproof valve location Fill Color, map image is formed, is distributed and carries out with the pipeline of water system Comparison, easy-to-look-up water pollution place, to handle pollution pipeline in time, final data analysis and arrangement module 29 and chart are aobvious Show that module 31 saves the data after analysis to local server 33 by data memory module 32, leader is facilitated to check, so as to Processing in time, data are synchronized to cloud server 35, to the secondary storage of data, avoid losing by local server 33, in addition when When cutting off the water, the administrative department that cuts off the water can send information to monitoring module 28 by local server 33, and monitoring module 28 can Lamp ring 13 is controlled by controller 7, red LED lamp bead is bright, usually uses, and blue led lamp bead is bright, and night facilitates illumination.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (8)

1. a kind of valve system for detecting water quality, including top cover (1), it is characterised in that: top cover (1) bottom is equipped with transparent outer Shell (2), transparent outer cover (2) side are equipped with connector (3), and transparent outer cover (2) bottom is equipped with valve body (4), the top cover (1) top is equipped with display (5), and top cover (1) bottom side is equipped with voice portal (6), and control is equipped with inside the top cover (1) Device (7) processed, controller (7) side is equipped with GPS locator (8) and the other side is equipped with speech recognition device (9), described transparent The first iron core (10) are equipped with inside shell (2), are equipped with coil (11) outside first iron core (10), first iron core (10) Top is equipped with the first spring (15) and bottom is equipped with second spring (16), and second spring (16) bottom is equipped with the second iron core (17), small coil (18) are equipped with outside second iron core (17), the second iron core (17) bottom is equipped with blocking head (19), institute It states and is equipped with reset spring (20) inside blocking head (19), be equipped with valve seat (21) inside the valve body (4), valve seat (21) inner wall Equipped with sealing ring (22), valve body (4) side is equipped with water inlet pipe (23) and the other side is equipped with outlet pipe (24), the water inlet It manages (23) and is equipped with eddy-current flowmeter (25), the outlet pipe (24) is equipped with conductivity sensor (26) and temperature sensor (27), the temperature sensor (27) is set to conductivity sensor (26) side, and controller (7) output end is equipped with monitoring Module (28) and data computation module (34), the data computation module (34) and controller (7) output end are equipped with display (5), data computation module (34) output end is equipped with monitoring module (28), and monitoring module (28) output end is equipped with data Analysis and arrangement module (29) and controller (7), data analysis and arrangement module (29) input terminal be equipped with database (30) and Output end is equipped with chart display module (31), and the data analysis and arrangement module (29) and chart display module (31) output end are set Have data memory module (32), data memory module (32) output end is equipped with local server (33), the local service Device (33) output end is equipped with cloud server (35) and monitoring module (28), in which:
The monitoring module (28) is used to monitor the information data for the valve detection for receiving each region;
The data analysis and arrangement module (29) is for arranging data and carrying out data and database (30) Plays data pair Than determining whether measurement result complies with standard;
The chart display module (31) is used to data analysis and arrangement module (29) treated data and text being organized into figure Picture and table, and color in image;
The data memory module (32) stores for data;
The local server (33) is sent for receiving the Data Concurrent detected every time to cloud server (35);
The cloud server (35) is for synchronizing the data information detected every time;
The data computation module (34) is used for the flow Data-Statistics of the water after eddy-current flowmeter (25) survey and calculates use Water rate is used.
2. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: on the outside of the display (5) Equipped with lamp ring (13), the lamp ring (13) includes substrate, and the substrate is equipped with multiple red LED lamp beads and blue led lamp bead, The blue led lamp bead and the setting of red LED lamp bead uniform intervals.
3. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: set outside the coil (11) Have thermal insulation board (12), is equipped with multiple LED light strip (14) outside the thermal insulation board (12), the LED light strip (14) includes green LED Light bar and red LED lamp band, the red LED lamp band and green LED lamp band uniform intervals are arranged.
4. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: set at the top of the valve seat (21) There is rubber pad.
5. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: the temperature sensor (27) Model is set as QAE3010.010, and conductivity sensor (26) model is set as DDM-202, the eddy-current flowmeter (25) model is set as LWGY, the temperature sensor (27), conductivity sensor (26) and eddy-current flowmeter (25) with control Device (7) processed is electrically connected.
6. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: the sealing ring (22) is by shape Shape memory alloys material is made, and rubber sleeve is equipped with outside the sealing ring (22), the sealing ring (22) and controller (7) are electrically Connection.
7. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: the blocking head (19) includes Cylindrical body and hemisphere, the reset spring (20) are set to inside cylindrical body, and the cylindrical body is made of rubber material, described Hemisphere is made of plastic material, the sealing ring (22) and hemisphere mates.
8. a kind of valve system for detecting water quality according to claim 1, it is characterised in that: the chart display module It (31) include character module, image module and color filling module.
CN201710859576.7A 2017-09-21 2017-09-21 A kind of valve system detecting water quality Active CN107676495B (en)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
CN108916463A (en) * 2018-07-13 2018-11-30 苏州韵之秋智能科技有限公司 A kind of smart electronics water valve with a self-generating function
CN110221034A (en) * 2019-05-20 2019-09-10 北京都润生态环境工程有限公司 A kind of solenoid valve monitoring pipeline water quality condition
CN110906054A (en) * 2019-11-26 2020-03-24 陈冠霖 Automatic monitoring system for industrial pipeline valve
CN111692761A (en) * 2020-07-22 2020-09-22 嵊州市浙江工业大学创新研究院 Intelligent constant-temperature water outlet water heater and intelligent control method thereof
CN112179423A (en) * 2020-09-30 2021-01-05 湖南常德牌水表制造有限公司 High-precision bidirectional metering intelligent water meter

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