CN104455696A - Automatic water inflow prompting device with pressure balance switch - Google Patents
Automatic water inflow prompting device with pressure balance switch Download PDFInfo
- Publication number
- CN104455696A CN104455696A CN201410739562.8A CN201410739562A CN104455696A CN 104455696 A CN104455696 A CN 104455696A CN 201410739562 A CN201410739562 A CN 201410739562A CN 104455696 A CN104455696 A CN 104455696A
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- water
- contact
- coil
- magnetic patch
- switch
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an automatic water inflow prompting device with a pressure balance switch. The automatic water inflow prompting device comprises a pipe body and an integrated circuit module, wherein a water seal opening provided with a water through hole at the center and two magnetic block mounting frames provided with magnetic blocks are arranged in the pipe body, ejector rods are arranged on the two magnetic block mounting frames, and water seal plates on the ejector rods are aligned to the water through hole at the center of the water seal opening; two coils are arranged on the ejector rods and are respectively connected with the integrated circuit module to form respective working circuits; an alarm prompting unit is arranged on the integrated circuit module; a pressure switch I is arranged between a water inlet and the water seal opening in the pipe body, and a pressure switch II and a pressure switch III are arranged between the water seal opening and a water outlet in the pipe body. The automatic water inflow prompting device does not influence the normal pass of water during normal water supply, automatically closes a water pipe in the case of water failure to avoid water waste resulting from forgetting to close a faucet after water inflow, and automatically gives out an alarm prompt after water inflow.
Description
Technical field
The present invention relates to water automatic prompting device after cutting off the water, this device, except water prompting, automatically can also be closed total water inlet in order to avoid water tap unlatching is forgotten to close and waste water resource and water logging house etc., belong to electronic alarm technique field after water pipe is cut off the water.
Background technique
In daily life, usually can cutting off the water in the face of various situation.Can bring a lot of inconvenience to everybody daily life after cutting off the water, so often all wish that the very first time knows next water, the common way of people is opened by certain water tap, if hear that namely current sound show water.Sound is conveniently listened to distinguish water, water tap again can not Kai get Tai little, even if otherwise water is also not easy to hear sound, thus water tap is often opened larger, again or family member also have guest want with water with regard to open water tap, forget because not having water to turn off the tap, sleep is rear or forget after going out that the situation of closed tap exists often, if just in time in this period water, will cause the waste of water, serious also may soak room floor furniture, even brings disaster to resident family downstairs.
Summary of the invention
For prior art above shortcomings, the object of the present invention is to provide a kind of water automatic prompting device, water automatic prompting device of the present invention is installed in water pipe, passing through of water is not affected during normal water supply, causing the waste of water after automatic closing water pipe being avoided water after cutting off the water because of forgetting to turn off the tap, after water, then automatically sending alarm.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
With the water automatic prompting device of pressure balance switch, comprise the body that can be connected on water pipe and the integrated circuit module be located at outside body, in body in water outlet is provided with the water cut off device of its central band water port, between water intake and water cut off device, two parallel magnetic patch scaffolds are interval with in body, two magnetic patch scaffolds lay magnetic patch respectively, and two magnetic patch opposing side levels are identical; Two magnetic patch scaffold centers are provided with push rod pilot hole, and the magnetic patch scaffold around push rod pilot hole was provided with water channel; Two magnetic patch scaffolds are provided with not magnetic conduction push rod, push rod two ends are each passed through the push rod pilot hole on two magnetic patch scaffolds, push rod one end is with water shutoff plate, the face that water shutoff plate is relative with water cut off device is plane, water shutoff plate is just to water port, water cut off device center, plane around water port is provided with plastic sealing water ring recess, the cushion rubber protruding from water cut off device surface is installed in plastic sealing water ring recess, together with water shutoff plate, water and water port can be separated;
Two groups that push rod between two magnetic patch scaffolds are provided with band iron core are mixed around coil together, be respectively coil I and coil II, the two ends of coil I pass body respectively and meet terminal A and B on integrated circuit module, connect working power form coil I performance loop between terminal A and B by coil I working power switch; The two ends of coil II pass body respectively and meet terminal C and D on integrated circuit module, connect working power form coil II performance loop between terminal C and D by coil II working power switch; Integrated circuit module is provided with alarm unit, and alarm unit connects working power by alert operation power switch and forms alert operation loop; Coil I performance loop produces oneself the two poles of the earth, north and south when connecting can, with the magnetic patch adhesive on a wherein magnetic patch scaffold, be repelled with the magnetic patch on another magnetic patch scaffold, thus move to adhesive magnetic patch direction, move round about during the connection of coil II performance loop;
Between water intake to water cut off device, pressure switch I is provided with in body, pressure switch I has two contacts, be respectively the contact a that pressure is connected and the contact b connected without pressure, between water cut off device to water outlet, pressure switch II and pressure switch III is provided with in body, pressure switch II has two contacts, be respectively the contact c that pressure is connected and the contact d connected without pressure, pressure switch III has one and connects the contact e having pressure to disconnect without pressure; Signal power source one end outside body connects the front contact of contact a and the front contact of contact b of pressure switch I simultaneously by wire, the back contact of contact a is respectively by the front contact of conductive contact point c and contact e, the back contact of contact b is by the front contact of conductive contact point d, the back contact of contact c, contact d and contact e connects the other end of signal power source respectively by terminal F, H, the I on integrated circuit module, thus form three signal circuits, wherein signal circuit I is made up of signal power source, contact a, contact c, terminal F; Signal circuit II is made up of signal power source, contact b, contact d, terminal H; Signal circuit III is made up of signal power source, contact a, contact e, terminal I;
Signal circuit I is for making coil I working power switch connection; Signal circuit II is for making coil II working power switch connection; Signal circuit III is connected for making alert operation power switch.
Further, be provided with road on one side outside described body, bypass two ends are connected with body two ends respectively, and bypass is provided with bypass valve.A cut-in point of described bypass and body is between water intake to water cut off device, and another cut-in point is between water cut off device and water outlet.
Two magnetic patch scaffolds are respectively equipped with normally closed push button switch, and two normally closed push button switches, towards the coil on push rod, can disconnect under coil presses; Two normally closed push button switches access in corresponding coil separately, to press this normally closed push button switch at coil with while corresponding magnetic patch adhesive, thus disconnect this coil.
Integrated circuit module is provided with manual power switch, for making coil II working power switch connection when manual power switch is pressed.
A kind of water automatic prompt method, this method adopts the water automatic prompting device of aforementioned strip pressure balance switch to realize.
Water automatic prompting device of the present invention is installed in water pipe, during normal water supply, push rod is in open mode, does not affect passing through of water, and after cutting off the water, push rod will be in closed condition, automatic closing water pipe, because forget turn off the tap and cause the waste of water and bring other consequence after avoiding water.After water, this device then sends alarm automatically, the user of announcement, user opens the bypass valve switch on this device again, and after making pressure balance, push rod is in open mode again, now close bypass valve again and just just can commonly use water, this timer is in again next wait alert status.
Accompanying drawing explanation
Fig. 1-structural representation of the present invention.
Fig. 2-circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further detailed description is done to the present invention.
See Fig. 1 and Fig. 2, upper as can be seen from figure, water automatic prompting device of the present invention, comprises the integrated circuit module that can be connected to body on water pipe 1 and be located at outside body, and body is that magnetic conduction and the applicable material that can bear the specified pressure having added safety factor are not formed.In body 1 in water outlet is provided with the water cut off device 3 of its central band water port 4, between water intake and water cut off device 3, two parallel magnetic patch scaffolds 2 are interval with in body 1, two magnetic patch scaffolds 2 are laid magnetic patch 5(permanent magnet respectively), two magnetic patch 5 opposing side levels are identical.Two magnetic patch scaffold 2 centers are provided with push rod pilot hole, and the magnetic patch scaffold around push rod pilot hole was provided with water channel, and water can pass through water channel by magnetic patch scaffold.Two magnetic patch scaffolds 2 are provided with non-magnetic push rod 6, and push rod 6 two ends are each passed through the push rod pilot hole on two magnetic patch scaffolds and can move along push rod pilot hole.Push rod 6 one end is with water shutoff plate 14, and the face that water shutoff plate 14 is relative with water cut off device 3 is plane, and water shutoff plate 14 is just to water port, water cut off device center 4.Plane around water port 4 is provided with plastic sealing water ring recess, is provided with the cushion rubber 15 protruding from water cut off device surface in plastic sealing water ring recess, water and water port 4 can separate by cushion rubber 15 together with water shutoff plate 14.
Two groups that push rod 6 between two magnetic patch scaffolds 2 are provided with band iron core are mixed around coil 7 together, be respectively coil I and coil II, the two ends of coil I pass body respectively and meet terminal A and B on integrated circuit module, connect working power form coil I performance loop between terminal A and B by coil I working power switch.The two ends of coil II pass body respectively and meet terminal C and D on integrated circuit module, connect working power form coil II performance loop between terminal C and D by coil II working power switch.Integrated circuit module is provided with alarm unit, and alarm unit connects working power by alert operation power switch and forms alert operation loop.Coil I performance loop produces oneself the two poles of the earth, north and south when connecting with the magnetic patch adhesive on a wherein magnetic patch scaffold (actual design is top magnetic patch scaffold in figure), can be repelled with the magnetic patch on another magnetic patch scaffold, thus move to adhesive magnetic patch direction.During adhesive, push rod moves upward, and the water port on water cut off device is in open mode, and water can be normal through.The direction that when coil II performance loop is connected, adhesive is repelled is on the contrary to move round about.Can with the magnetic patch adhesive on magnetic patch scaffold below when coil II performance loop is connected, during adhesive, push rod moves downward, and the water port on water cut off device is in closed condition by the water shutoff plate capping on push rod, water not by.
Between water intake to water cut off device 3, pressure switch I 8 is provided with in body 1, pressure switch I 8 has two contacts, be respectively the contact a that pressure is connected and the contact b connected without pressure, between water cut off device 3 to water outlet, pressure switch II 9 and pressure switch III 10 is provided with in body 1, pressure switch II 9 has two contacts, be respectively the contact c that pressure is connected and the contact d connected without pressure, pressure switch III 10 has one and connects the contact e having pressure to disconnect without pressure.The each contact of the present invention has front contact and back contact, and namely this contacting shows front and back two contacting of this contact, disconnects and namely shows that contact, front and back two disconnects.Signal power source one end outside body connects the contact a of pressure switch I and the front contact of contact b by wire simultaneously, the back contact of contact a is respectively by the front contact of conductive contact point c and contact e, the back contact of contact b is by the front contact of conductive contact point d, the back contact of contact c, contact d and contact e connects the other end of signal power source respectively by terminal F, H, the I on integrated circuit module, thus form three signal circuits, wherein signal circuit I is made up of signal power source, contact a, contact c, terminal F; Signal circuit II is made up of signal power source, contact b, contact d, terminal H; Signal circuit III is made up of signal power source, contact a, contact e, terminal I.Wherein signal circuit I is for making coil I working power switch connection; Signal circuit II is for making coil II working power switch connection; Signal circuit III is connected for making alert operation power switch.
Be provided with road 11 on one side outside described body 1, bypass 11 two ends are connected with body 1 two ends respectively, and bypass 11 is provided with bypass valve 12.A cut-in point of described bypass 11 and body is between water cut off device 3 and feed-water end, and another cut-in point is between water cut off device 3 and waterexit end.
Two magnetic patch scaffolds 2 are respectively equipped with normally closed push button switch 13, and two normally closed push button switches 13, towards the coil 7 on push rod, can disconnect under coil 7 presses.In two normally closed push button switches 13 coil that access is corresponding separately, to press this normally closed push button switch 13 at coil with while corresponding magnetic patch adhesive, thus disconnect this coil, avoid coil long charged, reach the object of energy saving.
Body two ends of the present invention need to access in advance in domestic water main pipe rail, and recommended levels is installed, and so more can improve the reliability of device.At ordinary times, the bypass valve in bypass is in closed condition.This device working principle is as follows:
One, when normal water supply, all hydraulic pressure is had everywhere in body, contact a, contact c connects, other contact disconnects, now by signal power source, contact a, contact c, the signal circuit I that terminal F is formed is connected and is formed closed-loop path, other signal circuits disconnect, signal circuit I makes coil I working power switch connection, coil I performance loop connection work, coil I is energized and produces magnetic field and produce suction with the magnetic patch illustrated on magnetic patch scaffold above, repulsion is produced with the magnetic patch on magnetic patch scaffold below, now push rod magnetic patch scaffold direction motion upward, magnetic patch adhesive on coil I and above magnetic patch scaffold, while adhesive, normally closed push button switch above on magnetic patch scaffold disconnects by coil touching, thus disconnection working power, reach the object of power saving, meanwhile, push rod is away from water cut off device, and water port is opened and normally can be crossed water.
Two, when cutting off the water, everywhere without hydraulic pressure in body, contact b, contact d and contact e connects, other contact disconnects, now by signal power source, contact b, contact d, the signal circuit II that terminal H is formed is connected and is formed closed-loop path, other signal circuits disconnect, signal circuit II makes coil II working power switch connection, coil II performance loop connection work, magnetic patch on coil II energising generation magnetic field and below magnetic patch scaffold produces suction, repulsion is produced with the magnetic patch on magnetic patch scaffold above, now push rod is to magnetic patch scaffold direction motion below, magnetic patch adhesive on coil II and below magnetic patch scaffold, water shutoff plate simultaneously on push rod is by water port capping.Before cutting off the water, the bypass valve in bypass cuts out exactly, and therefore main pipe rail is in closed condition.While adhesive, below normally closed push button switch on magnetic patch scaffold disconnect by coil touching, thus disconnect working power, reach the object of power saving.
Three, when cut off the water again water time, because the bypass valve in bypass cuts out, bypass disconnects, so now pressure switch I has been in pressure state, pressure switch II and pressure switch III are in pressure-less state, now contact a and contact e connects, other contact disconnects, by signal power source, contact a, contact e, terminal I is formed and signal circuit III connects formation closed-loop path, other signal circuits disconnect, signal circuit III makes alert operation power switch connect, alarm unit (actual is buzzer) live line work sends alarm, tell that user has water, but now push rod is still in state of cutting off the water, namely water shutoff plate is by water port capping, main pipe rail is closed, even if the water tap of terminal is opened, do not worry that water flows out yet.Now, only need the bypass valve opened in bypass, now water flows to pressure switch II and pressure switch III place by bypass, three pressure switches are made all to be in pressure state, now push rod magnetic patch scaffold direction motion upward again, water cut off device is opened, and this device gets back to again normal water supply state.After push rod moves upward and puts in place, close the bypass valve in bypass, this device is in next alarm latency state at once.
During actual design, be connected to relay respectively in signal circuit I, signal circuit II and signal circuit III, relay is respectively as the coil I working power switch of correspondence, coil II working power switch and alert operation power switch.
In order to more convenient use, the present invention is provided with manual power switch J on integrated circuit module, for making coil II working power switch connection when manual power switch J presses.When normal water flowing, want to close water source, first can open a water tap, then manual power switch is pressed, now coil I performance loop disconnects, simultaneously coil II working power switch connection, the work of coil II performance loop, thus water cut off device is closed by push rod, water tap direction there is not during pressure just can decontrol knob.
Be connected with the integrated circuit module outside body because the wire in body of the present invention needs to draw, conveniently go between, all line sets of drawing that needs can be combined unified extraction again, and carry out encapsulation process at extraction position.Consider that coil has certain amount of exercise, so the wire of drawing should have certain activity surplus in body.
Because two coils in the present invention are mainly used in and each self-corresponding magnetic patch adhesive, its both positive and negative polarity has direction to require, otherwise adhesive is exactly the magnetic patch in other direction with it, so the present invention needs electric main to be converted to direct current by inverter, more respectively in switch-on coil.
The above embodiment of the present invention is only for example of the present invention is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all mode of executions.Every belong to technological scheme of the present invention the apparent change of amplifying out or variation be still in the row of protection scope of the present invention.
Claims (6)
1. be with the water automatic prompting device of pressure balance switch, it is characterized in that, comprise the body that can be connected on water pipe and the integrated circuit module be located at outside body, in body in water outlet is provided with the water cut off device of its central band water port, between water intake and water cut off device, two parallel magnetic patch scaffolds are interval with in body, two magnetic patch scaffolds lay magnetic patch respectively, and two magnetic patch opposing side levels are identical; Two magnetic patch scaffold centers are provided with push rod pilot hole, and the magnetic patch scaffold around push rod pilot hole was provided with water channel; Two magnetic patch scaffolds are provided with not magnetic conduction push rod, push rod two ends are each passed through the push rod pilot hole on two magnetic patch scaffolds, push rod one end is with water shutoff plate, the face that water shutoff plate is relative with water cut off device is plane, water shutoff plate is just to water port, water cut off device center, plane around water port is provided with plastic sealing water ring recess, the cushion rubber protruding from water cut off device surface is installed in plastic sealing water ring recess, together with water shutoff plate, water and water port can be separated;
Two groups that push rod between two magnetic patch scaffolds are provided with band iron core are mixed around coil together, be respectively coil I and coil II, the two ends of coil I pass body respectively and meet terminal A and B on integrated circuit module, connect working power form coil I performance loop between terminal A and B by coil I working power switch; The two ends of coil II pass body respectively and meet terminal C and D on integrated circuit module, connect working power form coil II performance loop between terminal C and D by coil II working power switch; Integrated circuit module is provided with alarm unit, and alarm unit connects working power by alert operation power switch and forms alert operation loop; Coil I performance loop produces oneself the two poles of the earth, north and south when connecting can, with the magnetic patch adhesive on a wherein magnetic patch scaffold, be repelled with the magnetic patch on another magnetic patch scaffold, thus move to adhesive magnetic patch direction, move round about during the connection of coil II performance loop;
Between water intake to water cut off device, pressure switch I is provided with in body, pressure switch I has two contacts, be respectively the contact a that pressure is connected and the contact b connected without pressure, between water cut off device to water outlet, pressure switch II and pressure switch III is provided with in body, pressure switch II has two contacts, be respectively the contact c that pressure is connected and the contact d connected without pressure, pressure switch III has one and connects the contact e having pressure to disconnect without pressure; Signal power source one end outside body connects the front contact of contact a and the front contact of contact b of pressure switch I simultaneously by wire, the back contact of contact a is respectively by the front contact of conductive contact point c and contact e, the back contact of contact b is by the front contact of conductive contact point d, the back contact of contact c, contact d and contact e connects the other end of signal power source respectively by terminal F, H, the I on integrated circuit module, thus form three signal circuits, wherein signal circuit I is made up of signal power source, contact a, contact c, terminal F; Signal circuit II is made up of signal power source, contact b, contact d, terminal H; Signal circuit III is made up of signal power source, contact a, contact e, terminal I;
Signal circuit I is for making coil I working power switch connection; Signal circuit II is for making coil II working power switch connection; Signal circuit III is connected for making alert operation power switch.
2. the water automatic prompting device of band pressure balance switch according to claim 1, is characterized in that: be provided with road on one side outside described body, bypass two ends are connected with body two ends respectively, and bypass is provided with bypass valve.
3. the water automatic prompting device of band pressure balance switch according to claim 2, is characterized in that: a cut-in point of described bypass and body is between water intake to water cut off device, and another cut-in point is between water cut off device and water outlet.
4. the water automatic prompting device of band pressure balance switch according to claim 1, it is characterized in that: on two magnetic patch scaffolds, be respectively equipped with normally closed push button switch, two normally closed push button switches, towards the coil on push rod, can disconnect under coil presses; Two normally closed push button switches access in corresponding coil separately, to press this normally closed push button switch at coil with while corresponding magnetic patch adhesive, thus disconnect this coil.
5. the water automatic prompting device of band pressure balance switch according to claim 1, is characterized in that: on integrated circuit module, be provided with manual power switch, for making coil II working power switch connection when manual power switch is pressed.
6. water automatic prompt method, is characterized in that: this method adopts the water automatic prompting device of the arbitrary described band pressure balance switch of claim 1-5 to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739562.8A CN104455696B (en) | 2014-12-08 | 2014-12-08 | Automatic water inflow prompting device with pressure balance switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739562.8A CN104455696B (en) | 2014-12-08 | 2014-12-08 | Automatic water inflow prompting device with pressure balance switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455696A true CN104455696A (en) | 2015-03-25 |
| CN104455696B CN104455696B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410739562.8A Active CN104455696B (en) | 2014-12-08 | 2014-12-08 | Automatic water inflow prompting device with pressure balance switch |
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| Country | Link |
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| CN (1) | CN104455696B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798370A (en) * | 2019-03-26 | 2019-05-24 | 杭州卓维机械有限公司 | A kind of structure for water tap being automatically closed when anhydrous |
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| KR200463579Y1 (en) * | 2010-12-28 | 2012-11-12 | 김병창 | Automatic water supply valve |
| CN202756759U (en) * | 2012-06-12 | 2013-02-27 | 成都槟果科技有限公司 | Device for reminding water inflow recovery after cut-off of water supply |
| CN202853837U (en) * | 2012-10-31 | 2013-04-03 | 重庆卓特科技有限公司 | Water inflow prompting device |
| CN203131202U (en) * | 2013-02-25 | 2013-08-14 | 廖伯云 | Inflow warning and water limiting device for domestic water pipe |
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2014
- 2014-12-08 CN CN201410739562.8A patent/CN104455696B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051542A (en) * | 2005-07-22 | 2007-03-01 | Tsurumi Mfg Co Ltd | Sewage stirring valve and pump unit using the same |
| CN201651532U (en) * | 2010-03-11 | 2010-11-24 | 马波 | Prompting device used when valve is forgotten to be closed during water cutoff |
| KR200463579Y1 (en) * | 2010-12-28 | 2012-11-12 | 김병창 | Automatic water supply valve |
| CN202756759U (en) * | 2012-06-12 | 2013-02-27 | 成都槟果科技有限公司 | Device for reminding water inflow recovery after cut-off of water supply |
| CN202853837U (en) * | 2012-10-31 | 2013-04-03 | 重庆卓特科技有限公司 | Water inflow prompting device |
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| CN109798370A (en) * | 2019-03-26 | 2019-05-24 | 杭州卓维机械有限公司 | A kind of structure for water tap being automatically closed when anhydrous |
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| Publication number | Publication date |
|---|---|
| CN104455696B (en) | 2017-01-11 |
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Effective date of registration: 20190104 Address after: No. 50 Yongding Road, Haidian District, Beijing, 100854 (Beijing 142 mailbox 208 sub-box) Patentee after: Beijing Mechanical Equipment Research Institute Address before: 402283 No. 6 Shiliang Road, Luohuang Town, Jiangjin District, Chongqing Patentee before: He Guiqing |
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