CN108517920A - The method and apparatus for preventing the water in water supply hose from freezing - Google Patents
The method and apparatus for preventing the water in water supply hose from freezing Download PDFInfo
- Publication number
- CN108517920A CN108517920A CN201810367991.5A CN201810367991A CN108517920A CN 108517920 A CN108517920 A CN 108517920A CN 201810367991 A CN201810367991 A CN 201810367991A CN 108517920 A CN108517920 A CN 108517920A
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- water
- hose
- passages
- freezes
- prevented
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 279
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008014 freezing Effects 0.000 title claims description 12
- 238000007710 freezing Methods 0.000 title claims description 12
- 230000002528 anti-freeze Effects 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 2
- 239000008400 supply water Substances 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000001391 atomic fluorescence spectroscopy Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/10—Devices preventing bursting of pipes by freezing
- E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pipeline Systems (AREA)
Abstract
The present invention is in the prior art,Water when cold snap is supplied water over long distances with hose in hose is easily frozen,When the problem for needing the when of supplying water to be unable to normal water supply,A kind of method and apparatus that the water prevented in water supply hose freezes are provided,This device includes at least two hose passages,Closing device and water circle device,Closing device is respectively set in the water inlet end of hose and water outlet,The water inlet or water outlet of hose passages are connected with the closing device of corresponding end respectively,The device freezed using the water of structure of the invention prevented in water supply hose,Water during water recycles in hose passages remains constant,Need less energy consumption that water can be made to recycle,Therefore not only antifreezing effect is good,And it is energy saving,Under antifreeze state,It will not waste water,When needing to supply water,Hose can be made to switch to service position immediately,Reduce the time of delivery of water,Convenience and high-efficiency,Four seasons movement can be achieved with traditional fixation water supply installation cooperation to supply water.
Description
Technical field
The present invention relates to indusqtrial water supply fields, more particularly to a kind of to use flexible hose to carry out over long distances in cold environments
The case where water supply, the method for preventing the water in water supply hose from freezing in low temperature when being stopped with water and defroster.
Background technology
In the demand that the equipment or facility of some oriented movements of indusqtrial water supply occasion supply water, using hose by fixed for water end (W.E.)
It is connect with mobile equipment or facility and realizes that water supply is method easily and economically.Common water supply discontinuously carries out, and uses water
When valve is opened, the water at water source constantly flows through arrival water spot out of hose, does not have to valve when water and closes, water is just closed in
In hose, when environment temperature is down to 0 DEG C or less, immobilising water will gradually freeze in hose so that when supplying water again
Water cannot circulate or even hose is damaged by frost, and influence normal production water supply.In order to solve this technical problem, two kinds of generally use
The practice, one is making water flow out or be emptied the water in hose with by way of compressed air blowout, such antifreeze side naturally
The water of pipe memory stream need to be discharged into outside pipe by method every time, when needing with water, new water is put into pipe and is supplied water, is adopted this method
It is antifreeze, since pipeline is long, it is therefore desirable to which certain time could empty water, and a timing is also required to when needing to supply water again
Between could by water in pipe full of supply water, cause working efficiency relatively low, in addition a large amount of water, which is discharged in environment, also results in water
Waste；Also a kind of practice is hose plus heating device or adds attemperator, but since hose usually requires to move, often
It is often wound, pulls, distorts, therefore the resistance wire of heat tracing and protective layer are highly prone to damage so that the service life of hose
It is low, need to be replaced frequently, but due to adding heating device and attemperator, hose it is expensive, enterprise is come
Saying keeps water supply cost high, influences economic benefit, and the discarding of water pipe also brings along certain environmental pollution.This be northern ports,
The problem that the places winter such as mine, power plant, smelting, sprinkling truck is faced with the water surface.
Invention content
Water easily quilt when the purpose of the present invention is being supplied water over long distances with hose for cold snap in the prior art in hose
Freeze, when needing the when of supplying water to be unable to the problem of normal water supply, provides a kind of method that the water prevented in water supply hose freezes and dress
It sets.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of device that the water prevented in water supply hose freezes, including at least two hose passages, closing device and water cycle
Closing device is respectively set in the water inlet end of hose and water outlet in device, the water inlet or water outlet of hose passages respectively with it is right
The closing device that should be held is connected, and water circle device is arranged between closing device, is connected to any bar hose passages, supplies water
When, closing device is opened, water flows to water outlet by the water inlet end of every hose passages, when water supply stops, closing closing device, two
The same end of hose passages is connected to form closed ring channel, and water can flow in closed ring channel；
Closing device is shut-off valve, and the water inlet of every hose passages is connected to the water outlet of the shut-off valve of water inlet end one respectively,
The water outlet of every hose passages is connected to the water inlet of the shut-off valve of water outlet two respectively, and every channel of hose passages is single
More bore passages that single endoporus/many flexible pipes of the pore of hole hose/bis- endoporus hose are merged into；
The sum of sectional area of all hose passages is more than or equal to the sectional area of smaller conduit in feed pipe, outlet pipe；
Further include operating ambient temperature sensor and controller, the ambient temperature information that operating ambient temperature sensor will detect
The controller is passed to, when the operating ambient temperature sensor detects that environment temperature is less than or equal to 0 DEG C, the control
Device controls the circulator and opens；
Further include heating device, heating device is communicated with any endoporus of hose passages or multiple endoporus, by heating device to following
Ring water heats；
Further include water temperature sensor, water temperature sensor is used to detect the temperature of recirculated water in hose, and detection information is passed to
Controller, when detecting that water temperature is less than preset temperature, controller, which controls heating device and opens to heat the water in hose, to be increased
Temperature；
Further include flow sensor, flow sensor is used to detect the flow of the recirculated water in hose, and the information that will be detected
Controller is passed to, when flow is less than or equal to setting value, controller sends out alarm；
Further include mobile device, water pipe reel device is set in mobile device, hose can be wrapped in the reel of water pipe reel device
Above and it can be packed up and discharged by reel, circulator, heating device, operating ambient temperature sensor, water temperature sensor and control
Device processed is placed on the mobile apparatus.
A method of it prevents the water in water supply hose from freezing, two parallel hose passages is set, when normal water supply,
Flow in parallel hose passages is to identical, and when needing antifreeze, under the action of water circle device, water is in parallel hose passages
It is recycled in the closed ring channel of formation, prevents from freezing；
Environment temperature is detected, when environment temperature is less than or equal to 0 DEG C under the action of water circle device, water is parallel
It recycles, the water temperature in closed ring channel is detected, when the water detected in the closed ring channel that hose passages are formed
When temperature is less than setting value, the water heating in closed ring channel is heated.
The device freezed using the water of structure of the invention prevented in water supply hose, due to soft using parallel arrangement of two
The end in the same direction of tube passage, hose passages is connected to logical and is connected with main pipeline, is respectively provided on the main pipeline at hose both ends
There is a closing device, closing device is opened when water supply, and two hose passages are parallel to the same direction flowing water, when need not supply water,
Closing device is closed, and two hose passages can form the circular passage of self-isolation, the water quilt being originally located in hose passages
It is enclosed in closed ring channel, when having the possibility freezed, so that water is prevented in closed ring channel internal circulation flow by water pump
Freeze, the water being closed in during water recycles in hose passages is isolated from the outside world, therefore the water in hose passages begins
It remains unchanged eventually, relative to a large amount of water in water supply installation, the water very little being closed in closed ring channel, therefore adopt
When being recycled with water pump, the workload of water pump is small, needs less energy consumption that water can be made to recycle, therefore not only antifreeze effect
Fruit is good, and energy saving；In addition, under antifreeze state, since water is closed in closed ring channel, the water in long soft-pipe
It is retained in closed ring channel, does not need emptied of water, will not waste water, when needing to supply water, due to being full of water in hose,
Therefore hose can be made to switch to service position immediately, reduces the time of delivery of water, convenience and high-efficiency.With traditional fixed water supply
Device cooperation can be achieved four seasons movement and supply water.
Further, environment temperature sensor and controller are set, and monitoring of environmental temperature is at 0 DEG C and 0 DEG C or less, control
Device control, which intermittently or continually starts water pump, makes water in hose internal circulation flow.
Further, it is arranged in series on circulation loop and heats water tank, water temperature sensor, flow sensor, to following
Ring water carries out temperature detection, and the information detected is passed to controller, passes through the flowing and increasing of controller control loop water
Temperature makes water pump and heats water tank according to water temperature work, therefore reduces the consumption of energy.
Especially when setting heats water tank in hose passages, it is only necessary to heating water tank and being enclosed in hose passages
Water heating, water inventory is few, and low energy consumption, and water circulates conducive to homogeneous heating in addition, and water temperature only need to be maintained to 0 DEG C or more,
Therefore the total energy consumption of the present apparatus is few, may remain in water in low energy consumption situation bottom hose and does not freeze.
Further, due to being additionally arranged water pipe reel device on the mobile apparatus, since hose is connected by rotary joint
The hollow shaft for connecing speed reducer, hose can follow mobile device to carry out folding and unfolding without turning round automatically under the action of rotary joint
Song is suitble to mobile over long distances supply water.
Description of the drawings
Fig. 1 is the device water supply work state principle signal that structure of the embodiment of the present invention prevents the water in water supply hose from freezing
Figure；
Fig. 2 is that the antifreeze working condition principle of device embodiment that structure of the embodiment of the present invention prevents the water in water supply hose from freezing is shown
It is intended to；
Fig. 3 is another example structure schematic diagram of device that structure of the embodiment of the present invention prevents the water in water supply hose from freezing；
Fig. 4 is the main view that structure of the embodiment of the present invention prevents parallel arrangement of hose in the device that the water in water supply hose freezes
Figure；
Fig. 5 is A-A viewgraph of cross-section in Fig. 4；
Fig. 6 structures of the embodiment of the present invention prevent the front view of the hose of double endoporus in the device that the water in water supply hose freezes；
Fig. 7 is B-B viewgraph of cross-section in Fig. 6.
Reference sign
1- hoses one；2- hoses two；3- feed pipes；4- outlet pipes；5- shut-off valves one；
6- shut-off valves two；7- circulating pumps；8- heating devices；9- operating ambient temperature sensors；10- water temperature sensors； 11-
Controller；12- flow sensors；13- water pipe reel devices；14- mobile devices；The water sources 20-；21- water supply points；The bis- endoporus of 31-
Hose.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments：
The present invention prevents the water in long-distance soft hose from freezing with the following method：When supplying water, as shown in Figure 1, parallel by two
Hose supply water, water source 20 stream come water flow through and will not freeze in hose, when stop supply water and in the environment of low temperature freezes
When, as shown in Fig. 2, the both ends of two hoses is made to be connected, closed ring channel is formed, by circulator to being enclosed in hose
Water recycled, water in closed circular passage self recycle, so that the water in hose is in flow regime, prevent from freezing.
Certainly, in order to realize antifreeze automation, as shown in figure 3, can also add operating ambient temperature detection device, heating device,
The closed circular passage and water cycle that temperature detector, flow detector and control device form hose are controlled
System.
As shown in Fig. 1-Fig. 7, the present invention provides a kind of device that the water prevented in water supply hose freezes, which includes
Hose 1, hose 22, feed pipe 3, outlet pipe 4, shut-off valve 1, shut-off valve 26 and circulator.The setting of feed pipe 3 exists
At water source 20, outlet pipe 4 is arranged at water supply point 21, and parallel hose 1 and hose 22 are arranged in feed pipe 3 and outlet pipe
Between 4, the structure of single endoporus pipe as shown in Figure 4 can be used in hose 1 and hose 22, can also be arranged in as shown in Figure 5
Two endoporus of double endoporus hoses 31, double endoporus hoses are set up in parallel, can from the hose for being separated into single endoporus between the two, in this way it
End can be separated along length of tube direction, the same side of a double endoporus pipes is connected with each other, and can form closed circulation loop
It acts on identical as two parallel arrangement of single endoporus hoses.In short, being arranged in the present apparatus two or more parallel
The water inlet of water channel, shut-off valve 1 is connect with the water outlet of feed pipe 3, and the water outlet of shut-off valve 1 is same by triple valve
When connect with the water inlet end of hose 1 and hose 22.Equally, the water outlet of two hoses passes through shut-off valve 26 and outlet pipe 4
The water inlet of connection, shut-off valve 26 is connect with the water outlet of hose 1 and hose 22 simultaneously by triple valve, shut-off valve 26
Water outlet connect with the water inlet of outlet pipe 4, and the sum of sectional area of two hose endoporus not less than feed pipe 3 or water outlet
Smaller sectional area in pipe 4 can ensure that the flow to supply water is not lowered in this way.When being supplied water, opens shut-off valve 1 and cut
Only valve 26, entire pipe passage are in unimpeded state, and flow is flowed out from water source 20, after feed pipe 3 and shut-off valve 1, point
Hose 1 and hose 22 are separately flowed at two strands, using outlet pipe 4 is imported after shut-off valve 26, finally flows into water supply point 21.
Circulator is set on the channel of 22 any hose of hose 1 and hose, when stopping of supplying water needs to carry out antifreeze processing,
Shut-off valve 1 and shut-off valve 26 are closed, hose 1 and hose 22 form closed ring channel, and circulator setting is being closed
In circular passage.Circulator is preferably circulating pump, open the circulation pump 7, and the water retained in hose 1 and hose 22 is being closed
Circular passage recycles, and prevents from freezing in low-temperature condition.Certainly two or more a plurality of parallel hoses can also be used, it is each soft
Pipe can be single endoporus, can also be more endoporus, and when a plurality of hose, hose is divided into two groups, all has in every group of hose more
A endoporus, the flow direction of water is the same in the endoporus in same group in every hose, it as the effect of single endoporus hose, because
This is similarly known as a hose passages.
In further embodiment, environment temperature sensor 9 and controller 11 be set, when stoppings water, environment temperature senses
The ambient temperature information detected is passed to controller 11 by device 9, if operating ambient temperature sensor 9 detects environment temperature etc.
In or be less than 0 DEG C, then controller 11 start circulating pump 7 so that flow in pipeline is moved up；When higher than 0 DEG C, then do not start circulating pump
7.Circulating pump 7 can with continuous operation, can also intermitten service, i.e., often operation a period of time can suspend a period of time, so both
It can ensure that the water in pipeline keeps Generation-Atomic Fluorescence Spectrometry not freeze, and can be energy saving.
In further embodiment, heating device 8 is set in the closed ring channel that hose 1 and hose 22 are formed, is increased
Warm device preferably heat water tank, when circulating pump 7 in operation and hose circulating water temperature it is low need heating when, unlatching heats
Water tank heats recirculated water.Circulating for water is conducive to being uniformly distributed for heat.Due to being enclosed in two hoses
And the water heated in water tank is few, the heat that when heating needs is also less, in addition hose is heat-insulated preferably, in closed ring channel
Interior water-cooled is slower, and energy consumption is very low.
In further embodiment, water temperature sensor is set in the closed ring channel that hose 1 and hose 22 are formed
10.Water temperature sensor 10 is used to detect the temperature of closed ring in-channel water, and controller 11 presets an operating temperature value,
When water temperature is less than setting value, controller 11 starts 8 heat cycles water of heating device, and water temperature stops when being at or above setting value
Heating.It can make the water inside hose 1 and hose 2 that flowing be kept not freeze in this way, less energy can be consumed.Temperature is set
Value can carry out test selection according to specific working environment, as long as can make the non-icing temperature of water under water recurrent state i.e.
Can, 2 DEG C are typically chosen, is conducive to so energy saving and ensures that water will not freeze.
In further embodiment, is formed in hose 1 and hose 22 and flow sensor 12 is set in closed ring channel,
Signal is passed to controller 11 by flow sensor 12 for detecting whether water flows, if controller 11 opens cycle
It pumps 7 but water fails to reach preset flow, be considered as water and stop flowing, then controller 11 provides alarm signal, prevents unexpected cause
Water in hose freezes.
In further embodiment, circulating pump 7, heating device 8, water temperature sensor 10, flow sensor 12 are arranged in hose
1 and the closed ring channel that is formed of hose 22 on, put in order and its position of positioned water inlet end or water outlet can be with
Adjustment transformation, does not influence the function of the present invention.
In further embodiment, mobile device 14 can also be set, two water pipe reels are set in mobile device 14 and are filled
13 are set, hose one and hose two are respectively wound around on the reel of a water pipe reel device, the water outlet point of hose one and hose two
It is not connect with outlet pipe by the hollow shaft of speed reducer of respective water pipe reel device 13 and the free end of rotary joint, hose one
It can be packed up by reel with hose two, can also be discharged from reel, realize and supply water over long distances.Water pipe reel device 13 is the prior art
Structure can refer to a kind of entitled water pipe reel device, application No. is 201310527173.4 Chinese invention patent application,
It is not repeated to describe in present patent application.One water pipe reel device 13 can also be set, and hose 1 and hose 22 twine simultaneously
It is wound on the reel of water pipe reel device 13, rotary joint at this time is twin adapter, the water outlet difference of hose one and hose two
It is connect with outlet pipe by the hollow shaft of speed reducer and the free end of rotary joint.Circulating pump 7, heating device 8, environment temperature pass
Sensor 9, water temperature sensor 10, flow sensor 12 and controller 11 can be arranged in mobile device 14, facilitate installation and behaviour
Make.
In further embodiment, circulating pump 7, water temperature sensor 10, flow sensor 12, feed pipe, goes out heating device 8
Water pipe is fixedly installed, and insulating layer and heating tape can be arranged outside the device of these above-mentioned fixed settings, prevent under low temperature
Portion's water freezes, and ensures that entire water system is not frozen always, and can the water of switching at any time and stopping water state.
Claims (10)
1. a kind of device that the water prevented in water supply hose freezes, which is characterized in that including at least two hose passages, be closed dress
It sets and water circle device, the closing device, the water inlet of hose passages is respectively set in the water inlet end of hose and water outlet
Or water outlet is connected with the closing device of corresponding end respectively, the water circle device is arranged between closing device, with
Any bar hose passages are connected to, and when water supply, open closing device, and water flows to water outlet by the water inlet end of every hose passages, supplies
When water stops, closing device is closed, the same end of two hose passages is connected to form closed ring channel, and water can closed
It is flowed in circular passage.
2. a kind of device that the water prevented in water supply hose freezes as described in claim 1, which is characterized in that the closure dress
Be set to shut-off valve, the water inlets of every hose passages respectively with the shut-off valve of water inlet end one（5）Water outlet connection, every
The water outlet of hose passages respectively with the shut-off valve of water outlet two（6）Water inlet connection, every channel of the hose passages
It is more bore passages that single endoporus/many flexible pipes of pore/bis- endoporus hose of single hole hose are merged into.
3. a kind of device that the water prevented in water supply hose freezes as described in claim 1, which is characterized in that all described soft
The sum of sectional area of tube passage is more than or equal to feed pipe（3）, outlet pipe（4）The sectional area of middle smaller conduit.
4. a kind of device that the water prevented in water supply hose freezes as described in claim 1, which is characterized in that further include work
Environment temperature sensor（9）And controller（11）, operating ambient temperature sensor（9）The ambient temperature information detected is transmitted
To the controller（11）, when the operating ambient temperature sensor（9）It is described when detecting that environment temperature is less than or equal to 0 DEG C
Controller（11）The circulator is controlled to open.
5. the device that a kind of water prevented in water supply hose as described in claim 1 or 4 freezes, which is characterized in that further include
Heating device（8）, the heating device（8）It is communicated with any endoporus of hose passages or multiple endoporus, by the heating device
（8）To circulating water heating.
6. a kind of device that the water prevented in water supply hose freezes as claimed in claim 5, which is characterized in that further include water temperature
Sensor（10）, the water temperature sensor（10）Temperature for detecting recirculated water in hose, and detection information is passed into control
Device processed（11）, when detecting that water temperature is less than preset temperature, the controller（11）Control the heating device（8）Unlatching pair
Water heating in hose heats.
7. a kind of device that the water prevented in water supply hose freezes as claimed in claim 6, which is characterized in that further include flow
Sensor（12）, the flow sensor（12）Flow for detecting the recirculated water in hose, and the information detected is passed
Pass the controller（11）, when flow is less than or equal to setting value, controller sends out alarm.
8. a kind of device that the water prevented in water supply hose freezes as claimed in claim 6, which is characterized in that further include movement
Equipment（14）, the mobile device（14）Upper setting water pipe reel device（13）, the hose can be wrapped in water pipe reel device
（13）Reel on and can be packed up and discharged by reel, the circulator, the heating device（8）, the working environment temperature
Spend sensor（9）, the water temperature sensor（10）And the controller（11）It is placed on the mobile device（14）On.
9. a kind of method that the water prevented in water supply hose freezes, which is characterized in that two parallel hose passages of setting, when just
When often supplying water, flow in parallel hose passages is to identical, and when needing antifreeze, under the action of water circle device, water is parallel
Hose passages formed closed ring channel in cycle, prevent from freezing.
10. a kind of method that the water prevented in water supply hose freezes as claimed in claim 9, which is characterized in that environment temperature
Degree is detected, and when environment temperature is less than or equal to 0 DEG C under the action of water circle device, water is formed in parallel hose passages
Closed ring channel in recycle, the water temperature in closed ring channel is detected, when the water temperature detected be less than setting value
When, the water heating in closed ring channel is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367991.5A CN108517920A (en) | 2018-04-23 | 2018-04-23 | The method and apparatus for preventing the water in water supply hose from freezing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367991.5A CN108517920A (en) | 2018-04-23 | 2018-04-23 | The method and apparatus for preventing the water in water supply hose from freezing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108517920A true CN108517920A (en) | 2018-09-11 |
Family
ID=63429057
Family Applications (1)
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|---|---|---|---|
| CN201810367991.5A Pending CN108517920A (en) | 2018-04-23 | 2018-04-23 | The method and apparatus for preventing the water in water supply hose from freezing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594614A (en) * | 2018-10-26 | 2019-04-09 | 合肥茂高电子科技有限公司 | A kind of water pipe anti-freezing protection system for residential area |
| CN111744305A (en) * | 2020-07-29 | 2020-10-09 | 无锡市华能电力机械有限公司 | Open pit coal mine crushing station dust comprehensive treatment system |
| CN112081182A (en) * | 2020-09-10 | 2020-12-15 | 梁尚柱 | Circulating flow type anti-freezing pipeline |
| CN112212066A (en) * | 2020-10-09 | 2021-01-12 | 陈科 | Speed-reducing water valve |
| CN112922088A (en) * | 2021-01-29 | 2021-06-08 | 高�玉 | Anti-freezing water pipe device |
| CN113019085A (en) * | 2021-03-19 | 2021-06-25 | 中国神华煤制油化工有限公司 | Desulfurization device for alpine regions |
| CN114484281A (en) * | 2022-01-27 | 2022-05-13 | 江苏格陵兰传热科技有限公司 | Anti-freezing module for circulating pipeline |
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| CN208121873U (en) * | 2018-04-23 | 2018-11-20 | 俞婷 | Prevent the device that water freezes in hose |
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