CN103742708B - Leakage inductive automatic stop valve - Google Patents
Leakage inductive automatic stop valve Download PDFInfo
- Publication number
- CN103742708B CN103742708B CN201410035281.4A CN201410035281A CN103742708B CN 103742708 B CN103742708 B CN 103742708B CN 201410035281 A CN201410035281 A CN 201410035281A CN 103742708 B CN103742708 B CN 103742708B
- Authority
- CN
- China
- Prior art keywords
- sealing
- water
- piston
- valve
- piston hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001939 inductive effect Effects 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000007787 solid Substances 0.000 claims abstract description 25
- 108091006028 chimera Proteins 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 210000000214 Mouth Anatomy 0.000 claims description 10
- 239000000969 carrier Substances 0.000 claims description 8
- 230000002093 peripheral Effects 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 description 1
- CUXQLKLUPGTTKL-UHFFFAOYSA-M Microcosmic salt Chemical compound [NH4+].[Na+].OP([O-])([O-])=O CUXQLKLUPGTTKL-UHFFFAOYSA-M 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/001—Actuating devices; Operating means; Releasing devices actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid
Abstract
The anti-water consumption device of energy continues the leakage inductive automatic stop valve leaked, valve body is provided with valve seat between water supply chamber and water-supplying chamber, back pressure cavity is formed between valve body and valve gap, valve body is provided with the barrier film opening and closing described valve seat, chimeric on barrier film have diaphragm plate, barrier film with diaphragm plate offers the other hole be communicated with water supply chamber, valve gap is provided with piston hole and guide channel, piston hole internal orifice is communicated in described back pressure cavity, guide channel one end is communicated with the other end with described back pressure cavity and is communicated with described piston hole, piston hole is provided with piston rod, piston rod upper-end part of driving is in described back pressure cavity, this upper end portion ring is embedded with Sealing A, piston rod pressed on ring is embedded with Sealing B, the connecting port of Sealing B guide channel and piston hole below Sealing A is between Sealing A and Sealing B, between opening's edge, there is runner in Sealing B and piston hole, piston-rod lower end portion is arranged with the band mesh container of holding soluble solids.The present invention is used as the normally open valve of water appliance.
Description
Technical field
The invention belongs to a kind of device for stoping the water consumption device such as water purifier, little kitchen treasured to leak, this device can detect the leakage of tap water from water consumption device of input, and automatically cuts off input water route.
Background technique
Along with people's living standard improves constantly, popularize gradually with water or water treatment utensil in office or management place and family, also be on the increase, as water purifier, storage-type electric water heater, dishwasher, some washing machines and other some watering equipment utensils connected by flexible pipe, normally open valve is adopted to connect water inlet water source, due to the quality of these equipment utensils itself, the reason such as service life or improper operation, often there will be water leakage phenomenon, when user goes out the long period, this just long-time sustainable existence that leaks, usually can cause the indoor a large amount of ponding of user, drop down water, floor, article apparatus, the even metopes had etc. are impaired by soaking, cause any property loss, invade and appliance circuit time, also hold fire hazardous, ponding with drop down water and also can bring disaster to neighbours, cause neighbourhood's dispute, even lead to a disaster.
Chinese utility model patent ZL200420029067.X of the prior art discloses a kind of device for stoping water purifier to leak, and it comprises upper-lower casing and link thereof, also comprises deformed spring, valve and compound paper tape; In the middle part of upper-lower casing left and right side, correspondence has the support slot can fixing described valve respectively; Lower shell body inner bottom surface has aperture, described deformed spring can be fixed on lower shell body inner bottom surface with combined connection component by aperture, a leg of deformed spring constrains on the sidewall of lower shell body, another leg point upwards bends 90 degree at its place of turning round, shift bar position place when making its end be positioned described valve wide open, now deformed spring utilizes ring-type compound paper tape that it is constrained in standby storage elasticity potential energy states; The hithermost lower shell body sidewall of described deformed spring has breach.But this device there are the following problems, if to leak and the paper tape flowing into intrinsic water-soaked does not disconnect in time from water purifier, then for stoping the device of leakage can not normal operation.Due to this reason, the water leakage increase leaking into kitchen from water purifier can be caused, and expensive floor, wallpaper or the damage of other article therefore can be made to cause economic loss.Further, if in wet environment, compound paper tape absorbs water due to deliquescence, may cause rupturing when not leaking, then for stoping the error action of device of leakage to be done, affect the normal work of water consumption device equipment.
A kind of device for stoping water purifier to leak that Chinese invention patent ZL200980101915.9 provides, it absorbs water purifier or water correction plant water leakage by pulp body by compression and expands, and the tap water using check-valve plunger automatically to cut off inflow stops and leaks.But this device exists Railway Project, one is that compression paper pulp more easily absorbs water, and easily deliquescence water suction, causes also volumetric expansion occurring in water-tight situation, occur that Drain Resistance error action of device is done, affect the normal work of water consumption device equipment in a humidity environment.Further, compression paper pulp is not conventional common items, and after there is misoperation, user changes inconvenience.Two be this device under intake pressure higher state, check-valve plunger is subject to large hydraulic pressure, even if compressed paper volume of slurry expands, and spring can not be replied by hydraulic pressure contracting, thus can not cut off the water supply and play protective action of leaking.
The device that Chinese utility model patent ZL200620057712.8 provides adopts leak water detdction and coordinates electromagnetic valve to solve and continues to leak water problem, but need outside outfit power supply, comprise configuration power interface, detection and control part needs special Detection theory device, need a container for placing water appliance, thus need to increase no small cost, and add in installing and using and take up room, be also inconvenient to use.
Summary of the invention
The present invention will solve when the water appliances such as water purifier, little kitchen treasured, water heater leak can not cut off water inlet prevention leakage water problem automatically, a kind of anti-leakage inductive automatic stop valve continuing to leak of the present invention is provided for this reason, when this valve dissolves by the water leakage that ease of solubility solid matter runs into water appliance, piston rod be pushed and make Sealing block guide channel and automatically valve closing cut off water inlet path, stop water appliance to continue to leak.
For solving the problem, the technical solution used in the present invention has valve body, valve body has water intake, water supply chamber, water-supplying chamber and water outlet, valve body is provided with valve seat between water supply chamber and water-supplying chamber, valve body is connected with valve gap, back pressure cavity is formed between valve body and valve gap, valve body is provided with the barrier film opening and closing described valve seat, chimeric on barrier film have diaphragm plate, back pressure cavity and valve seat are separated by barrier film and diaphragm plate, barrier film with diaphragm plate offers the other hole be communicated with water supply chamber, its special way is that described valve gap is provided with piston hole and guide channel, piston hole internal orifice is communicated in described back pressure cavity, guide channel one end is communicated with described back pressure cavity, the guide channel the other end is communicated with described piston hole, piston hole is provided with piston rod, piston rod upper-end part of driving is in described back pressure cavity, this piston rod upper end portion ring is embedded with Sealing A, piston rod is gone back ring and be embedded with Sealing B, Sealing B is positioned at below Sealing A, the connecting port of described guide channel and piston hole is between Sealing A and Sealing B, between opening's edge, there is runner in Sealing B and piston hole, on piston rod, lower mobile time Sealing B be sealed in piston hole wall, what when piston rod moves down, Sealing A was sealed in described runner is suitable for reading, piston-rod lower end portion is arranged with the band mesh container of holding water-soluble solid, in band mesh container full dose holding water-soluble solid state, piston-rod lower end arrives at contact water-soluble solid, and the Sealing A of piston rod upper end portion is positioned at and leaves piston hole opening's edge one distance.
Preferably described piston hole internal orifice is formed with seal carrier mouth, and the oral area radial dimension of seal carrier mouth is relatively greater than the radial dimension of described piston hole.
Described its shape of seal carrier mouth is preferably toroidal, also can be counterbore shape.Toroidal bearing mouth is up big and down small, the counterbore shape bearing degree of lip-rounding with expanding step aperture, like with the step hole putting nut heavy on bolt.
The present invention should be provided with spring A at described upper cover of piston rod, and spring A upper end is placed in the piston hole collar extension outer peripheral areas of valve gap, and spring A lower end is placed in the step that piston rod radial direction extends out.Effect of spring A is to apply downward power to piston rod, and ensure that piston-rod lower end loses piston rod when holder and moves down, it is suitable for reading that the Sealing A on piston rod is sealed described runner.Do not establish the situation of spring A, piston-rod lower end loses when holder, and because described back pressure cavity has enough pressure, piston rod also can move down, and makes the Sealing A on piston rod be sealed described runner suitable for reading.
Can be provided with spring B in back pressure chamber, spring B upper end is placed in described diaphragm plate, and spring B lower end is placed in piston hole internal orifice outer peripheral areas.Effect of spring B is that back pressure cavity and guide channel current block, and guarantees that valve seat is by diaphragm seals during the non-pressure release of back pressure cavity.Do not establish the situation of spring B, back pressure cavity and guide channel current block, the non-pressure release of back pressure cavity and have enough pressure, and valve seat also can by diaphragm seals.
The present invention can be connected with moisture absorption flexible cord or soft ribbons on described band mesh container, and this moisture absorption flexible cord or soft ribbons upper end are positioned at band mesh container (mesh is that the applicable moisture absorption soft ribbons in long narrow hole is passed) through being with the mesh of mesh container.So can expand fitting limit of the present invention and region, strengthen the flexibility of mounting zone.
Its wall portion of band mesh container of the present invention has reticulated cell, and hole shape is unrestricted.Reticulated cell refers to the general name in the continuous adjacent hole, upper and lower, left and right that an opening area is offered.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is one embodiment of the invention structural representation;
Fig. 2 is another embodiment of the present invention structural representation;
Fig. 3 is further embodiment of this invention structural representation;
Fig. 4 is the A place enlarged view in Fig. 1.
Mark and counterpart in figure: 1 valve body, 101 water intakes, 102 water supply chambers, 103 water-supplying chamber, 104 water outlets, 105 valve seats, 106 back pressure cavity, 2 valve gaps, 201 piston holes, 2011 runners, 202 guide channels, 203 seal carrier mouths, 3 barrier films, 4 diaphragm plates, 401 other holes, 5 anti-lasting water leakage devices, 501 piston rods, 502 Sealing A, 503 Sealing B, 504 band mesh containers, 505 water-soluble solids, 7 spring A, 8 spring B.
Embodiment
Embodiment one
A kind of leakage inductive automatic stop valve, valve body 1 has water intake 101, the water supply chamber 102 be communicated with water intake, water-supplying chamber 103 and the water outlet 104 be communicated with water-supplying chamber, valve body is provided with valve seat 105 between water supply chamber and water-supplying chamber, valve body is connected with valve gap 2, back pressure cavity 106 is formed between valve body and valve gap, valve body is provided with the barrier film 3 opening and closing described valve seat, chimeric on barrier film have diaphragm plate 4, back pressure cavity and valve seat are separated by barrier film 3 and diaphragm plate 4, barrier film with diaphragm plate offers the other hole 401 be communicated with water supply chamber, valve gap is provided with piston hole 201 and guide channel 202, piston hole internal orifice is communicated in described back pressure cavity, guide channel one end is communicated with back pressure cavity, the other end is communicated with described piston hole, piston hole is provided with can along on piston hole, the piston rod 501 of lower movement, piston rod upper-end part of driving is in back pressure cavity, this piston rod upper end portion ring is embedded with Sealing A502, piston rod is gone back ring and be embedded with Sealing B503, Sealing B is positioned at below Sealing A, the connecting port of guide channel 202 and piston hole 201 is between Sealing A and Sealing B, between opening's edge, there is runner 2011 in Sealing B and piston hole, on piston rod, lower mobile time Sealing B be sealed in piston hole wall, prevent the water in back pressure cavity from flowing out from the gap of piston hole wall and piston rod, what when piston rod moves down, Sealing A was sealed in described runner is suitable for reading, piston-rod lower end portion is arranged with the band mesh container 504 of holding water-soluble solid 505, in band mesh container full dose holding water-soluble solid state, piston-rod lower end arrives at contact water-soluble solid, and the Sealing A of piston rod upper end portion leaves the interior opening's edge of piston hole.
Water-soluble solid in the present invention can be the inorganic salts such as sylvite, sodium salt, ammonium salt, nitrate or acetate, and the sodium chloride (salt) in sodium salt is a kind of modal inorganic salts.
Described full dose holding water-soluble solid state, i.e. q.s holding water-soluble solid state, contact water-soluble solid 505 is arrived in this state lower piston rod 501 lower end, and the Sealing A502 of piston rod upper end portion leaves the interior opening's edge of piston hole 201.Under this state, water in back pressure cavity 106 flows into guide channel 202 by runner 2011, flow out from water outlet 104 again, back pressure cavity pressure release, water supply chamber 102 pressure is greater than Pressure in Back-pressure Cavity, and diaphragm plate 4 and barrier film 3 lift (in downward direction lifting in figure), and barrier film lifts off a seat 105, the water of water supply chamber flows into water-supplying chamber 103 by valve seat, then flows out from water outlet.When water-soluble solid does not dissolve, water inlet and outlet constant conduction of the present invention, therefore the present invention can be called the normally open valve that can automatically cut off the water supply.Common normally open valve can not be closed automatically when water appliance leaks, and causes and continues to leak.The present invention is quite different.
The present invention can be mounted and be contacted with flooring, when water appliance leak cause excess surface water time, water invades from the molten device 504 of band mesh, dissolve with the water-soluble solid 505 in the molten device of mesh, volume-diminished, highly decline, the pressure of back pressure cavity 106 is enough to promote piston rod 501 and moves down, it is suitable for reading that Sealing A502 moves down closed flow 2011, water in back pressure cavity does not flow out by runner, back pressure cavity is communicated with water supply chamber 102 by other hole 401, Pressure in Back-pressure Cavity increases, compressing diaphragm plate and barrier film move to valve seat 105 direction, valve seat is by diaphragm seals, the water of water supply chamber can not flow to water-supplying chamber, turnover water route is blocked, water appliance is prevented to continue to leak.
The present invention also can be installed on a water-accepting basin, and this water-accepting basin is placed in below water appliance.
Embodiment two
What this example was different from example is the seal carrier mouth 203 that described piston hole internal orifice is formed with toroidal, and Sealing A like this moves down this bearing mouth located, can more reliably closed flow 2011.Other structures are identical with upper example.
Embodiment three
What this example was different from example two is that upper cover of piston rod is provided with spring A7, and spring A upper end is placed in the piston hole collar extension outer peripheral areas of valve gap, and spring A lower end is placed in the step that piston rod radial direction extends out.So dissolve back piston bar at water-soluble solid can more reliably move down, cut off water route.Other structures are identical with example two.
Embodiment four
What this example was different from example three is in back pressure chamber, be provided with spring B 8, and spring B upper end is placed in described diaphragm plate, and spring B lower end is placed in piston hole internal orifice outer peripheral areas.Valve seat like this more can reliably be closed.
Embodiment five
What be different from above embodiment is that this example is connected with moisture absorption flexible cord on described band mesh container, and this moisture absorption flexible cord upper end is positioned at band mesh container through the mesh of band mesh container.So the valve of this example is except being installed on ground or water-accepting basin, can also be installed on other orientation, drag and earth surface after installation by outside described moisture absorption flexible cord, by moisture absorption flexible cord aqueous wicking delivery in band mesh container, dissolves soluble solids.
Comprising the present invention of above-mentioned all embodiments, dissolved by water appliance water leakage by water-soluble solid and responded to, then cutting off water supply water route, without the need to the device adopting other any detection water appliances to leak, also without the need to adopting any device comprising power supply.The present invention only need be dissolved at water-soluble solid or add after being partly dissolved or add this water-soluble solid (as salt), just can reuse, and water-soluble solid adds conveniently; Water-soluble solid source in the present invention is sufficient, and it is convenient to obtain.
Claims (8)
1. a leakage inductive automatic stop valve, comprise valve body (1), valve body has water intake (101), water supply chamber (102), water-supplying chamber (103) and water outlet (104), valve body is provided with valve seat (105) between water supply chamber and water-supplying chamber, valve body is connected with valve gap (2), back pressure cavity (106) is formed between valve body and valve gap, valve body is provided with the barrier film (3) opening and closing described valve seat, chimeric on barrier film have diaphragm plate (4), back pressure cavity and valve seat are separated by barrier film (3) and diaphragm plate (4), barrier film with diaphragm plate offers the other hole (401) be communicated with water supply chamber, it is characterized in that described valve gap is provided with piston hole (201) and guide channel (202), piston hole internal orifice is communicated in described back pressure cavity, guide channel one end is communicated with described back pressure cavity, the guide channel the other end is communicated with described piston hole, piston hole is provided with piston rod (501), piston rod upper-end part of driving is in described back pressure cavity, this piston rod upper end portion ring is embedded with Sealing A (502), piston rod is gone back ring and be embedded with Sealing B (503), Sealing B is positioned at below Sealing A, the connecting port of described guide channel and piston hole is between Sealing A and Sealing B, between opening's edge, there is runner (2011) in Sealing B and piston hole, on piston rod, lower mobile time Sealing B be sealed in piston hole wall, what when piston rod moves down, Sealing A was sealed in described runner is suitable for reading, piston-rod lower end portion is arranged with the band mesh container (504) of holding soluble solids (505), in band mesh container full dose holding soluble solids state, piston-rod lower end arrives at contact soluble solids, and the Sealing A of piston rod upper end portion is positioned at and leaves piston hole opening's edge one distance.
2. automatic stop valve as claimed in claim 1, it is characterized in that described piston hole internal orifice is formed with seal carrier mouth (203), the oral area radial dimension of seal carrier mouth is relatively greater than the radial dimension of described piston hole.
3. automatic stop valve as claimed in claim 2, is characterized in that the shape of described seal carrier mouth is toroidal or counterbore shape.
4. the automatic stop valve as described in claim 1,2 or 3, it is characterized in that being provided with spring A (7) at described upper cover of piston rod, spring A upper end is placed in the piston hole collar extension outer peripheral areas of valve gap, and spring A lower end is placed in the step that piston rod radial direction extends out.
5. automatic stop valve as claimed in claim 4, it is characterized in that in back pressure chamber, be provided with spring B (8), spring B upper end is placed in described diaphragm plate, and spring B lower end is placed in piston hole internal orifice outer peripheral areas.
6. the automatic stop valve as described in claim 1,2 or 3, is characterized in that being connected with moisture absorption flexible cord on described band mesh container, and this moisture absorption flexible cord upper end is positioned at band mesh container through the mesh of band mesh container.
7. automatic stop valve as claimed in claim 4, is characterized in that being connected with moisture absorption flexible cord on described band mesh container, and this moisture absorption flexible cord upper end is positioned at band mesh container through the mesh of band mesh container.
8. automatic stop valve as claimed in claim 5, is characterized in that being connected with moisture absorption flexible cord or soft ribbons on described band mesh container, and this moisture absorption flexible cord or soft ribbons upper end are positioned at band mesh container through being with the mesh of mesh container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035281.4A CN103742708B (en) | 2014-01-24 | 2014-01-24 | Leakage inductive automatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035281.4A CN103742708B (en) | 2014-01-24 | 2014-01-24 | Leakage inductive automatic stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103742708A CN103742708A (en) | 2014-04-23 |
| CN103742708B true CN103742708B (en) | 2016-03-16 |
Family
ID=50499758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410035281.4A Active CN103742708B (en) | 2014-01-24 | 2014-01-24 | Leakage inductive automatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103742708B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048086B (en) * | 2014-01-26 | 2017-05-17 | 艾欧史密斯(中国)热水器有限公司 | Water-leakage protection valve |
| CN106988704B (en) * | 2016-01-21 | 2020-07-10 | 中国石油化工股份有限公司 | Pressure-bearing blanking plug for underground pipe column |
| CN114950773B (en) * | 2022-04-08 | 2023-03-28 | 箭牌家居集团股份有限公司 | High-temperature stop valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7231937B2 (en) * | 2003-05-27 | 2007-06-19 | Greene Ralph G | Automatic shutoff valve |
| KR101239324B1 (en) * | 2010-10-05 | 2013-03-05 | 정휘동 | Valve for opening and closing the passage using buoyancy |
| CN203335925U (en) * | 2013-05-14 | 2013-12-11 | 溢泰实业股份有限公司 | Water leakage protective device |
| CN203757158U (en) * | 2014-01-24 | 2014-08-06 | 杭州神林电子有限公司 | Water leakage sensing automatic stop valve |
-
2014
- 2014-01-24 CN CN201410035281.4A patent/CN103742708B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103742708A (en) | 2014-04-23 |
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Effective date of registration: 20160607 Address after: 336 No. 210038 Jiangsu city in Nanjing Province Economic and Technological Development Zone, the new road Patentee after: A.O. Smith (China) Water Heater Co., Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 8, No. 7, street, building 1 Patentee before: Shenlin Electronics Co., Ltd., Hangzhou |